Move Ingress godeps to vendor/

vendor/github.com/beorn7/perks/quantile/stream.go

@@ -0,0 +1,292 @@
+// Package quantile computes approximate quantiles over an unbounded data
+// stream within low memory and CPU bounds.
+//
+// A small amount of accuracy is traded to achieve the above properties.
+//
+// Multiple streams can be merged before calling Query to generate a single set
+// of results. This is meaningful when the streams represent the same type of
+// data. See Merge and Samples.
+//
+// For more detailed information about the algorithm used, see:
+//
+// Effective Computation of Biased Quantiles over Data Streams
+//
+// http://www.cs.rutgers.edu/~muthu/bquant.pdf
+package quantile
+
+import (
+	"math"
+	"sort"
+)
+
+// Sample holds an observed value and meta information for compression. JSON
+// tags have been added for convenience.
+type Sample struct {
+	Value float64 `json:",string"`
+	Width float64 `json:",string"`
+	Delta float64 `json:",string"`
+}
+
+// Samples represents a slice of samples. It implements sort.Interface.
+type Samples []Sample
+
+func (a Samples) Len() int           { return len(a) }
+func (a Samples) Less(i, j int) bool { return a[i].Value < a[j].Value }
+func (a Samples) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+
+type invariant func(s *stream, r float64) float64
+
+// NewLowBiased returns an initialized Stream for low-biased quantiles
+// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
+// error guarantees can still be given even for the lower ranks of the data
+// distribution.
+//
+// The provided epsilon is a relative error, i.e. the true quantile of a value
+// returned by a query is guaranteed to be within (1±Epsilon)*Quantile.
+//
+// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
+// properties.
+func NewLowBiased(epsilon float64) *Stream {
+	ƒ := func(s *stream, r float64) float64 {
+		return 2 * epsilon * r
+	}
+	return newStream(ƒ)
+}
+
+// NewHighBiased returns an initialized Stream for high-biased quantiles
+// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
+// error guarantees can still be given even for the higher ranks of the data
+// distribution.
+//
+// The provided epsilon is a relative error, i.e. the true quantile of a value
+// returned by a query is guaranteed to be within 1-(1±Epsilon)*(1-Quantile).
+//
+// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
+// properties.
+func NewHighBiased(epsilon float64) *Stream {
+	ƒ := func(s *stream, r float64) float64 {
+		return 2 * epsilon * (s.n - r)
+	}
+	return newStream(ƒ)
+}
+
+// NewTargeted returns an initialized Stream concerned with a particular set of
+// quantile values that are supplied a priori. Knowing these a priori reduces
+// space and computation time. The targets map maps the desired quantiles to
+// their absolute errors, i.e. the true quantile of a value returned by a query
+// is guaranteed to be within (Quantile±Epsilon).
+//
+// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error properties.
+func NewTargeted(targets map[float64]float64) *Stream {
+	ƒ := func(s *stream, r float64) float64 {
+		var m = math.MaxFloat64
+		var f float64
+		for quantile, epsilon := range targets {
+			if quantile*s.n <= r {
+				f = (2 * epsilon * r) / quantile
+			} else {
+				f = (2 * epsilon * (s.n - r)) / (1 - quantile)
+			}
+			if f < m {
+				m = f
+			}
+		}
+		return m
+	}
+	return newStream(ƒ)
+}
+
+// Stream computes quantiles for a stream of float64s. It is not thread-safe by
+// design. Take care when using across multiple goroutines.
+type Stream struct {
+	*stream
+	b      Samples
+	sorted bool
+}
+
+func newStream(ƒ invariant) *Stream {
+	x := &stream{ƒ: ƒ}
+	return &Stream{x, make(Samples, 0, 500), true}
+}
+
+// Insert inserts v into the stream.
+func (s *Stream) Insert(v float64) {
+	s.insert(Sample{Value: v, Width: 1})
+}
+
+func (s *Stream) insert(sample Sample) {
+	s.b = append(s.b, sample)
+	s.sorted = false
+	if len(s.b) == cap(s.b) {
+		s.flush()
+	}
+}
+
+// Query returns the computed qth percentiles value. If s was created with
+// NewTargeted, and q is not in the set of quantiles provided a priori, Query
+// will return an unspecified result.
+func (s *Stream) Query(q float64) float64 {
+	if !s.flushed() {
+		// Fast path when there hasn't been enough data for a flush;
+		// this also yields better accuracy for small sets of data.
+		l := len(s.b)
+		if l == 0 {
+			return 0
+		}
+		i := int(float64(l) * q)
+		if i > 0 {
+			i -= 1
+		}
+		s.maybeSort()
+		return s.b[i].Value
+	}
+	s.flush()
+	return s.stream.query(q)
+}
+
+// Merge merges samples into the underlying streams samples. This is handy when
+// merging multiple streams from separate threads, database shards, etc.
+//
+// ATTENTION: This method is broken and does not yield correct results. The
+// underlying algorithm is not capable of merging streams correctly.
+func (s *Stream) Merge(samples Samples) {
+	sort.Sort(samples)
+	s.stream.merge(samples)
+}
+
+// Reset reinitializes and clears the list reusing the samples buffer memory.
+func (s *Stream) Reset() {
+	s.stream.reset()
+	s.b = s.b[:0]
+}
+
+// Samples returns stream samples held by s.
+func (s *Stream) Samples() Samples {
+	if !s.flushed() {
+		return s.b
+	}
+	s.flush()
+	return s.stream.samples()
+}
+
+// Count returns the total number of samples observed in the stream
+// since initialization.
+func (s *Stream) Count() int {
+	return len(s.b) + s.stream.count()
+}
+
+func (s *Stream) flush() {
+	s.maybeSort()
+	s.stream.merge(s.b)
+	s.b = s.b[:0]
+}
+
+func (s *Stream) maybeSort() {
+	if !s.sorted {
+		s.sorted = true
+		sort.Sort(s.b)
+	}
+}
+
+func (s *Stream) flushed() bool {
+	return len(s.stream.l) > 0
+}
+
+type stream struct {
+	n float64
+	l []Sample
+	ƒ invariant
+}
+
+func (s *stream) reset() {
+	s.l = s.l[:0]
+	s.n = 0
+}
+
+func (s *stream) insert(v float64) {
+	s.merge(Samples{{v, 1, 0}})
+}
+
+func (s *stream) merge(samples Samples) {
+	// TODO(beorn7): This tries to merge not only individual samples, but
+	// whole summaries. The paper doesn't mention merging summaries at
+	// all. Unittests show that the merging is inaccurate. Find out how to
+	// do merges properly.
+	var r float64
+	i := 0
+	for _, sample := range samples {
+		for ; i < len(s.l); i++ {
+			c := s.l[i]
+			if c.Value > sample.Value {
+				// Insert at position i.
+				s.l = append(s.l, Sample{})
+				copy(s.l[i+1:], s.l[i:])
+				s.l[i] = Sample{
+					sample.Value,
+					sample.Width,
+					math.Max(sample.Delta, math.Floor(s.ƒ(s, r))-1),
+					// TODO(beorn7): How to calculate delta correctly?
+				}
+				i++
+				goto inserted
+			}
+			r += c.Width
+		}
+		s.l = append(s.l, Sample{sample.Value, sample.Width, 0})
+		i++
+	inserted:
+		s.n += sample.Width
+		r += sample.Width
+	}
+	s.compress()
+}
+
+func (s *stream) count() int {
+	return int(s.n)
+}
+
+func (s *stream) query(q float64) float64 {
+	t := math.Ceil(q * s.n)
+	t += math.Ceil(s.ƒ(s, t) / 2)
+	p := s.l[0]
+	var r float64
+	for _, c := range s.l[1:] {
+		r += p.Width
+		if r+c.Width+c.Delta > t {
+			return p.Value
+		}
+		p = c
+	}
+	return p.Value
+}
+
+func (s *stream) compress() {
+	if len(s.l) < 2 {
+		return
+	}
+	x := s.l[len(s.l)-1]
+	xi := len(s.l) - 1
+	r := s.n - 1 - x.Width
+
+	for i := len(s.l) - 2; i >= 0; i-- {
+		c := s.l[i]
+		if c.Width+x.Width+x.Delta <= s.ƒ(s, r) {
+			x.Width += c.Width
+			s.l[xi] = x
+			// Remove element at i.
+			copy(s.l[i:], s.l[i+1:])
+			s.l = s.l[:len(s.l)-1]
+			xi -= 1
+		} else {
+			x = c
+			xi = i
+		}
+		r -= c.Width
+	}
+}
+
+func (s *stream) samples() Samples {
+	samples := make(Samples, len(s.l))
+	copy(samples, s.l)
+	return samples
+}

vendor/github.com/blang/semver/LICENSE

@@ -0,0 +1,22 @@
+The MIT License
+
+Copyright (c) 2014 Benedikt Lang <github at benediktlang.de>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

vendor/github.com/blang/semver/README.md

@@ -0,0 +1,142 @@
+semver for golang [![Build Status](https://drone.io/github.com/blang/semver/status.png)](https://drone.io/github.com/blang/semver/latest) [![GoDoc](https://godoc.org/github.com/blang/semver?status.png)](https://godoc.org/github.com/blang/semver) [![Coverage Status](https://img.shields.io/coveralls/blang/semver.svg)](https://coveralls.io/r/blang/semver?branch=master)
+======
+
+semver is a [Semantic Versioning](http://semver.org/) library written in golang. It fully covers spec version `2.0.0`.
+
+Usage
+-----
+```bash
+$ go get github.com/blang/semver
+```
+Note: Always vendor your dependencies or fix on a specific version tag.
+
+```go
+import github.com/blang/semver
+v1, err := semver.Make("1.0.0-beta")
+v2, err := semver.Make("2.0.0-beta")
+v1.Compare(v2)
+```
+
+Also check the [GoDocs](http://godoc.org/github.com/blang/semver).
+
+Why should I use this lib?
+-----
+
+- Fully spec compatible
+- No reflection
+- No regex
+- Fully tested (Coverage >99%)
+- Readable parsing/validation errors
+- Fast (See [Benchmarks](#benchmarks))
+- Only Stdlib
+- Uses values instead of pointers
+- Many features, see below
+
+
+Features
+-----
+
+- Parsing and validation at all levels
+- Comparator-like comparisons
+- Compare Helper Methods
+- InPlace manipulation
+- Sortable (implements sort.Interface)
+- database/sql compatible (sql.Scanner/Valuer)
+- encoding/json compatible (json.Marshaler/Unmarshaler)
+
+
+Example
+-----
+
+Have a look at full examples in [examples/main.go](examples/main.go)
+
+```go
+import github.com/blang/semver
+
+v, err := semver.Make("0.0.1-alpha.preview+123.github")
+fmt.Printf("Major: %d\n", v.Major)
+fmt.Printf("Minor: %d\n", v.Minor)
+fmt.Printf("Patch: %d\n", v.Patch)
+fmt.Printf("Pre: %s\n", v.Pre)
+fmt.Printf("Build: %s\n", v.Build)
+
+// Prerelease versions array
+if len(v.Pre) > 0 {
+    fmt.Println("Prerelease versions:")
+    for i, pre := range v.Pre {
+        fmt.Printf("%d: %q\n", i, pre)
+    }
+}
+
+// Build meta data array
+if len(v.Build) > 0 {
+    fmt.Println("Build meta data:")
+    for i, build := range v.Build {
+        fmt.Printf("%d: %q\n", i, build)
+    }
+}
+
+v001, err := semver.Make("0.0.1")
+// Compare using helpers: v.GT(v2), v.LT, v.GTE, v.LTE
+v001.GT(v) == true
+v.LT(v001) == true
+v.GTE(v) == true
+v.LTE(v) == true
+
+// Or use v.Compare(v2) for comparisons (-1, 0, 1):
+v001.Compare(v) == 1
+v.Compare(v001) == -1
+v.Compare(v) == 0
+
+// Manipulate Version in place:
+v.Pre[0], err = semver.NewPRVersion("beta")
+if err != nil {
+    fmt.Printf("Error parsing pre release version: %q", err)
+}
+
+fmt.Println("\nValidate versions:")
+v.Build[0] = "?"
+
+err = v.Validate()
+if err != nil {
+    fmt.Printf("Validation failed: %s\n", err)
+}
+```
+
+Benchmarks
+-----
+
+    BenchmarkParseSimple         5000000      328    ns/op    49 B/op   1 allocs/op
+    BenchmarkParseComplex        1000000     2105    ns/op   263 B/op   7 allocs/op
+    BenchmarkParseAverage        1000000     1301    ns/op   168 B/op   4 allocs/op
+    BenchmarkStringSimple       10000000      130    ns/op     5 B/op   1 allocs/op
+    BenchmarkStringLarger        5000000      280    ns/op    32 B/op   2 allocs/op
+    BenchmarkStringComplex       3000000      512    ns/op    80 B/op   3 allocs/op
+    BenchmarkStringAverage       5000000      387    ns/op    47 B/op   2 allocs/op
+    BenchmarkValidateSimple    500000000        7.92 ns/op     0 B/op   0 allocs/op
+    BenchmarkValidateComplex     2000000      923    ns/op     0 B/op   0 allocs/op
+    BenchmarkValidateAverage     5000000      452    ns/op     0 B/op   0 allocs/op
+    BenchmarkCompareSimple     100000000       11.2  ns/op     0 B/op   0 allocs/op
+    BenchmarkCompareComplex     50000000       40.9  ns/op     0 B/op   0 allocs/op
+    BenchmarkCompareAverage     50000000       43.8  ns/op     0 B/op   0 allocs/op
+    BenchmarkSort                5000000      436    ns/op   259 B/op   2 allocs/op
+
+See benchmark cases at [semver_test.go](semver_test.go)
+
+
+Motivation
+-----
+
+I simply couldn't find any lib supporting the full spec. Others were just wrong or used reflection and regex which i don't like.
+
+
+Contribution
+-----
+
+Feel free to make a pull request. For bigger changes create a issue first to discuss about it.
+
+
+License
+-----
+
+See [LICENSE](LICENSE) file.

vendor/github.com/blang/semver/json.go

@@ -0,0 +1,23 @@
+package semver
+
+import (
+	"encoding/json"
+)
+
+// MarshalJSON implements the encoding/json.Marshaler interface.
+func (v Version) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.String())
+}
+
+// UnmarshalJSON implements the encoding/json.Unmarshaler interface.
+func (v *Version) UnmarshalJSON(data []byte) (err error) {
+	var versionString string
+
+	if err = json.Unmarshal(data, &versionString); err != nil {
+		return
+	}
+
+	*v, err = Parse(versionString)
+
+	return
+}

vendor/github.com/blang/semver/semver.go

@@ -0,0 +1,395 @@
+package semver
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+const (
+	numbers  string = "0123456789"
+	alphas          = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-"
+	alphanum        = alphas + numbers
+)
+
+// SpecVersion is the latest fully supported spec version of semver
+var SpecVersion = Version{
+	Major: 2,
+	Minor: 0,
+	Patch: 0,
+}
+
+// Version represents a semver compatible version
+type Version struct {
+	Major uint64
+	Minor uint64
+	Patch uint64
+	Pre   []PRVersion
+	Build []string //No Precendence
+}
+
+// Version to string
+func (v Version) String() string {
+	b := make([]byte, 0, 5)
+	b = strconv.AppendUint(b, v.Major, 10)
+	b = append(b, '.')
+	b = strconv.AppendUint(b, v.Minor, 10)
+	b = append(b, '.')
+	b = strconv.AppendUint(b, v.Patch, 10)
+
+	if len(v.Pre) > 0 {
+		b = append(b, '-')
+		b = append(b, v.Pre[0].String()...)
+
+		for _, pre := range v.Pre[1:] {
+			b = append(b, '.')
+			b = append(b, pre.String()...)
+		}
+	}
+
+	if len(v.Build) > 0 {
+		b = append(b, '+')
+		b = append(b, v.Build[0]...)
+
+		for _, build := range v.Build[1:] {
+			b = append(b, '.')
+			b = append(b, build...)
+		}
+	}
+
+	return string(b)
+}
+
+// Equals checks if v is equal to o.
+func (v Version) Equals(o Version) bool {
+	return (v.Compare(o) == 0)
+}
+
+// EQ checks if v is equal to o.
+func (v Version) EQ(o Version) bool {
+	return (v.Compare(o) == 0)
+}
+
+// NE checks if v is not equal to o.
+func (v Version) NE(o Version) bool {
+	return (v.Compare(o) != 0)
+}
+
+// GT checks if v is greater than o.
+func (v Version) GT(o Version) bool {
+	return (v.Compare(o) == 1)
+}
+
+// GTE checks if v is greater than or equal to o.
+func (v Version) GTE(o Version) bool {
+	return (v.Compare(o) >= 0)
+}
+
+// GE checks if v is greater than or equal to o.
+func (v Version) GE(o Version) bool {
+	return (v.Compare(o) >= 0)
+}
+
+// LT checks if v is less than o.
+func (v Version) LT(o Version) bool {
+	return (v.Compare(o) == -1)
+}
+
+// LTE checks if v is less than or equal to o.
+func (v Version) LTE(o Version) bool {
+	return (v.Compare(o) <= 0)
+}
+
+// LE checks if v is less than or equal to o.
+func (v Version) LE(o Version) bool {
+	return (v.Compare(o) <= 0)
+}
+
+// Compare compares Versions v to o:
+// -1 == v is less than o
+// 0 == v is equal to o
+// 1 == v is greater than o
+func (v Version) Compare(o Version) int {
+	if v.Major != o.Major {
+		if v.Major > o.Major {
+			return 1
+		}
+		return -1
+	}
+	if v.Minor != o.Minor {
+		if v.Minor > o.Minor {
+			return 1
+		}
+		return -1
+	}
+	if v.Patch != o.Patch {
+		if v.Patch > o.Patch {
+			return 1
+		}
+		return -1
+	}
+
+	// Quick comparison if a version has no prerelease versions
+	if len(v.Pre) == 0 && len(o.Pre) == 0 {
+		return 0
+	} else if len(v.Pre) == 0 && len(o.Pre) > 0 {
+		return 1
+	} else if len(v.Pre) > 0 && len(o.Pre) == 0 {
+		return -1
+	}
+
+	i := 0
+	for ; i < len(v.Pre) && i < len(o.Pre); i++ {
+		if comp := v.Pre[i].Compare(o.Pre[i]); comp == 0 {
+			continue
+		} else if comp == 1 {
+			return 1
+		} else {
+			return -1
+		}
+	}
+
+	// If all pr versions are the equal but one has further prversion, this one greater
+	if i == len(v.Pre) && i == len(o.Pre) {
+		return 0
+	} else if i == len(v.Pre) && i < len(o.Pre) {
+		return -1
+	} else {
+		return 1
+	}
+
+}
+
+// Validate validates v and returns error in case
+func (v Version) Validate() error {
+	// Major, Minor, Patch already validated using uint64
+
+	for _, pre := range v.Pre {
+		if !pre.IsNum { //Numeric prerelease versions already uint64
+			if len(pre.VersionStr) == 0 {
+				return fmt.Errorf("Prerelease can not be empty %q", pre.VersionStr)
+			}
+			if !containsOnly(pre.VersionStr, alphanum) {
+				return fmt.Errorf("Invalid character(s) found in prerelease %q", pre.VersionStr)
+			}
+		}
+	}
+
+	for _, build := range v.Build {
+		if len(build) == 0 {
+			return fmt.Errorf("Build meta data can not be empty %q", build)
+		}
+		if !containsOnly(build, alphanum) {
+			return fmt.Errorf("Invalid character(s) found in build meta data %q", build)
+		}
+	}
+
+	return nil
+}
+
+// New is an alias for Parse and returns a pointer, parses version string and returns a validated Version or error
+func New(s string) (vp *Version, err error) {
+	v, err := Parse(s)
+	vp = &v
+	return
+}
+
+// Make is an alias for Parse, parses version string and returns a validated Version or error
+func Make(s string) (Version, error) {
+	return Parse(s)
+}
+
+// Parse parses version string and returns a validated Version or error
+func Parse(s string) (Version, error) {
+	if len(s) == 0 {
+		return Version{}, errors.New("Version string empty")
+	}
+
+	// Split into major.minor.(patch+pr+meta)
+	parts := strings.SplitN(s, ".", 3)
+	if len(parts) != 3 {
+		return Version{}, errors.New("No Major.Minor.Patch elements found")
+	}
+
+	// Major
+	if !containsOnly(parts[0], numbers) {
+		return Version{}, fmt.Errorf("Invalid character(s) found in major number %q", parts[0])
+	}
+	if hasLeadingZeroes(parts[0]) {
+		return Version{}, fmt.Errorf("Major number must not contain leading zeroes %q", parts[0])
+	}
+	major, err := strconv.ParseUint(parts[0], 10, 64)
+	if err != nil {
+		return Version{}, err
+	}
+
+	// Minor
+	if !containsOnly(parts[1], numbers) {
+		return Version{}, fmt.Errorf("Invalid character(s) found in minor number %q", parts[1])
+	}
+	if hasLeadingZeroes(parts[1]) {
+		return Version{}, fmt.Errorf("Minor number must not contain leading zeroes %q", parts[1])
+	}
+	minor, err := strconv.ParseUint(parts[1], 10, 64)
+	if err != nil {
+		return Version{}, err
+	}
+
+	v := Version{}
+	v.Major = major
+	v.Minor = minor
+
+	var build, prerelease []string
+	patchStr := parts[2]
+
+	if buildIndex := strings.IndexRune(patchStr, '+'); buildIndex != -1 {
+		build = strings.Split(patchStr[buildIndex+1:], ".")
+		patchStr = patchStr[:buildIndex]
+	}
+
+	if preIndex := strings.IndexRune(patchStr, '-'); preIndex != -1 {
+		prerelease = strings.Split(patchStr[preIndex+1:], ".")
+		patchStr = patchStr[:preIndex]
+	}
+
+	if !containsOnly(patchStr, numbers) {
+		return Version{}, fmt.Errorf("Invalid character(s) found in patch number %q", patchStr)
+	}
+	if hasLeadingZeroes(patchStr) {
+		return Version{}, fmt.Errorf("Patch number must not contain leading zeroes %q", patchStr)
+	}
+	patch, err := strconv.ParseUint(patchStr, 10, 64)
+	if err != nil {
+		return Version{}, err
+	}
+
+	v.Patch = patch
+
+	// Prerelease
+	for _, prstr := range prerelease {
+		parsedPR, err := NewPRVersion(prstr)
+		if err != nil {
+			return Version{}, err
+		}
+		v.Pre = append(v.Pre, parsedPR)
+	}
+
+	// Build meta data
+	for _, str := range build {
+		if len(str) == 0 {
+			return Version{}, errors.New("Build meta data is empty")
+		}
+		if !containsOnly(str, alphanum) {
+			return Version{}, fmt.Errorf("Invalid character(s) found in build meta data %q", str)
+		}
+		v.Build = append(v.Build, str)
+	}
+
+	return v, nil
+}
+
+// MustParse is like Parse but panics if the version cannot be parsed.
+func MustParse(s string) Version {
+	v, err := Parse(s)
+	if err != nil {
+		panic(`semver: Parse(` + s + `): ` + err.Error())
+	}
+	return v
+}
+
+// PRVersion represents a PreRelease Version
+type PRVersion struct {
+	VersionStr string
+	VersionNum uint64
+	IsNum      bool
+}
+
+// NewPRVersion creates a new valid prerelease version
+func NewPRVersion(s string) (PRVersion, error) {
+	if len(s) == 0 {
+		return PRVersion{}, errors.New("Prerelease is empty")
+	}
+	v := PRVersion{}
+	if containsOnly(s, numbers) {
+		if hasLeadingZeroes(s) {
+			return PRVersion{}, fmt.Errorf("Numeric PreRelease version must not contain leading zeroes %q", s)
+		}
+		num, err := strconv.ParseUint(s, 10, 64)
+
+		// Might never be hit, but just in case
+		if err != nil {
+			return PRVersion{}, err
+		}
+		v.VersionNum = num
+		v.IsNum = true
+	} else if containsOnly(s, alphanum) {
+		v.VersionStr = s
+		v.IsNum = false
+	} else {
+		return PRVersion{}, fmt.Errorf("Invalid character(s) found in prerelease %q", s)
+	}
+	return v, nil
+}
+
+// IsNumeric checks if prerelease-version is numeric
+func (v PRVersion) IsNumeric() bool {
+	return v.IsNum
+}
+
+// Compare compares two PreRelease Versions v and o:
+// -1 == v is less than o
+// 0 == v is equal to o
+// 1 == v is greater than o
+func (v PRVersion) Compare(o PRVersion) int {
+	if v.IsNum && !o.IsNum {
+		return -1
+	} else if !v.IsNum && o.IsNum {
+		return 1
+	} else if v.IsNum && o.IsNum {
+		if v.VersionNum == o.VersionNum {
+			return 0
+		} else if v.VersionNum > o.VersionNum {
+			return 1
+		} else {
+			return -1
+		}
+	} else { // both are Alphas
+		if v.VersionStr == o.VersionStr {
+			return 0
+		} else if v.VersionStr > o.VersionStr {
+			return 1
+		} else {
+			return -1
+		}
+	}
+}
+
+// PreRelease version to string
+func (v PRVersion) String() string {
+	if v.IsNum {
+		return strconv.FormatUint(v.VersionNum, 10)
+	}
+	return v.VersionStr
+}
+
+func containsOnly(s string, set string) bool {
+	return strings.IndexFunc(s, func(r rune) bool {
+		return !strings.ContainsRune(set, r)
+	}) == -1
+}
+
+func hasLeadingZeroes(s string) bool {
+	return len(s) > 1 && s[0] == '0'
+}
+
+// NewBuildVersion creates a new valid build version
+func NewBuildVersion(s string) (string, error) {
+	if len(s) == 0 {
+		return "", errors.New("Buildversion is empty")
+	}
+	if !containsOnly(s, alphanum) {
+		return "", fmt.Errorf("Invalid character(s) found in build meta data %q", s)
+	}
+	return s, nil
+}

vendor/github.com/blang/semver/sort.go

@@ -0,0 +1,28 @@
+package semver
+
+import (
+	"sort"
+)
+
+// Versions represents multiple versions.
+type Versions []Version
+
+// Len returns length of version collection
+func (s Versions) Len() int {
+	return len(s)
+}
+
+// Swap swaps two versions inside the collection by its indices
+func (s Versions) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+// Less checks if version at index i is less than version at index j
+func (s Versions) Less(i, j int) bool {
+	return s[i].LT(s[j])
+}
+
+// Sort sorts a slice of versions
+func Sort(versions []Version) {
+	sort.Sort(Versions(versions))
+}

vendor/github.com/blang/semver/sql.go

@@ -0,0 +1,30 @@
+package semver
+
+import (
+	"database/sql/driver"
+	"fmt"
+)
+
+// Scan implements the database/sql.Scanner interface.
+func (v *Version) Scan(src interface{}) (err error) {
+	var str string
+	switch src := src.(type) {
+	case string:
+		str = src
+	case []byte:
+		str = string(src)
+	default:
+		return fmt.Errorf("Version.Scan: cannot convert %T to string.", src)
+	}
+
+	if t, err := Parse(str); err == nil {
+		*v = t
+	}
+
+	return
+}
+
+// Value implements the database/sql/driver.Valuer interface.
+func (v Version) Value() (driver.Value, error) {
+	return v.String(), nil
+}

vendor/github.com/davecgh/go-spew/LICENSE

@@ -0,0 +1,13 @@
+Copyright (c) 2012-2013 Dave Collins <dave@davec.name>
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

vendor/github.com/davecgh/go-spew/spew/bypass.go

@@ -0,0 +1,151 @@
+// Copyright (c) 2015 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is not running on Google App Engine and "-tags disableunsafe"
+// is not added to the go build command line.
+// +build !appengine,!disableunsafe
+
+package spew
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = false
+
+	// ptrSize is the size of a pointer on the current arch.
+	ptrSize = unsafe.Sizeof((*byte)(nil))
+)
+
+var (
+	// offsetPtr, offsetScalar, and offsetFlag are the offsets for the
+	// internal reflect.Value fields.  These values are valid before golang
+	// commit ecccf07e7f9d which changed the format.  The are also valid
+	// after commit 82f48826c6c7 which changed the format again to mirror
+	// the original format.  Code in the init function updates these offsets
+	// as necessary.
+	offsetPtr    = uintptr(ptrSize)
+	offsetScalar = uintptr(0)
+	offsetFlag   = uintptr(ptrSize * 2)
+
+	// flagKindWidth and flagKindShift indicate various bits that the
+	// reflect package uses internally to track kind information.
+	//
+	// flagRO indicates whether or not the value field of a reflect.Value is
+	// read-only.
+	//
+	// flagIndir indicates whether the value field of a reflect.Value is
+	// the actual data or a pointer to the data.
+	//
+	// These values are valid before golang commit 90a7c3c86944 which
+	// changed their positions.  Code in the init function updates these
+	// flags as necessary.
+	flagKindWidth = uintptr(5)
+	flagKindShift = uintptr(flagKindWidth - 1)
+	flagRO        = uintptr(1 << 0)
+	flagIndir     = uintptr(1 << 1)
+)
+
+func init() {
+	// Older versions of reflect.Value stored small integers directly in the
+	// ptr field (which is named val in the older versions).  Versions
+	// between commits ecccf07e7f9d and 82f48826c6c7 added a new field named
+	// scalar for this purpose which unfortunately came before the flag
+	// field, so the offset of the flag field is different for those
+	// versions.
+	//
+	// This code constructs a new reflect.Value from a known small integer
+	// and checks if the size of the reflect.Value struct indicates it has
+	// the scalar field. When it does, the offsets are updated accordingly.
+	vv := reflect.ValueOf(0xf00)
+	if unsafe.Sizeof(vv) == (ptrSize * 4) {
+		offsetScalar = ptrSize * 2
+		offsetFlag = ptrSize * 3
+	}
+
+	// Commit 90a7c3c86944 changed the flag positions such that the low
+	// order bits are the kind.  This code extracts the kind from the flags
+	// field and ensures it's the correct type.  When it's not, the flag
+	// order has been changed to the newer format, so the flags are updated
+	// accordingly.
+	upf := unsafe.Pointer(uintptr(unsafe.Pointer(&vv)) + offsetFlag)
+	upfv := *(*uintptr)(upf)
+	flagKindMask := uintptr((1<<flagKindWidth - 1) << flagKindShift)
+	if (upfv&flagKindMask)>>flagKindShift != uintptr(reflect.Int) {
+		flagKindShift = 0
+		flagRO = 1 << 5
+		flagIndir = 1 << 6
+
+		// Commit adf9b30e5594 modified the flags to separate the
+		// flagRO flag into two bits which specifies whether or not the
+		// field is embedded.  This causes flagIndir to move over a bit
+		// and means that flagRO is the combination of either of the
+		// original flagRO bit and the new bit.
+		//
+		// This code detects the change by extracting what used to be
+		// the indirect bit to ensure it's set.  When it's not, the flag
+		// order has been changed to the newer format, so the flags are
+		// updated accordingly.
+		if upfv&flagIndir == 0 {
+			flagRO = 3 << 5
+			flagIndir = 1 << 7
+		}
+	}
+}
+
+// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
+// the typical safety restrictions preventing access to unaddressable and
+// unexported data.  It works by digging the raw pointer to the underlying
+// value out of the protected value and generating a new unprotected (unsafe)
+// reflect.Value to it.
+//
+// This allows us to check for implementations of the Stringer and error
+// interfaces to be used for pretty printing ordinarily unaddressable and
+// inaccessible values such as unexported struct fields.
+func unsafeReflectValue(v reflect.Value) (rv reflect.Value) {
+	indirects := 1
+	vt := v.Type()
+	upv := unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetPtr)
+	rvf := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetFlag))
+	if rvf&flagIndir != 0 {
+		vt = reflect.PtrTo(v.Type())
+		indirects++
+	} else if offsetScalar != 0 {
+		// The value is in the scalar field when it's not one of the
+		// reference types.
+		switch vt.Kind() {
+		case reflect.Uintptr:
+		case reflect.Chan:
+		case reflect.Func:
+		case reflect.Map:
+		case reflect.Ptr:
+		case reflect.UnsafePointer:
+		default:
+			upv = unsafe.Pointer(uintptr(unsafe.Pointer(&v)) +
+				offsetScalar)
+		}
+	}
+
+	pv := reflect.NewAt(vt, upv)
+	rv = pv
+	for i := 0; i < indirects; i++ {
+		rv = rv.Elem()
+	}
+	return rv
+}

vendor/github.com/davecgh/go-spew/spew/bypasssafe.go

@@ -0,0 +1,37 @@
+// Copyright (c) 2015 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when either the code is running on Google App Engine or "-tags disableunsafe"
+// is added to the go build command line.
+// +build appengine disableunsafe
+
+package spew
+
+import "reflect"
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = true
+)
+
+// unsafeReflectValue typically converts the passed reflect.Value into a one
+// that bypasses the typical safety restrictions preventing access to
+// unaddressable and unexported data.  However, doing this relies on access to
+// the unsafe package.  This is a stub version which simply returns the passed
+// reflect.Value when the unsafe package is not available.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+	return v
+}

vendor/github.com/davecgh/go-spew/spew/common.go

@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strconv"
+)
+
+// Some constants in the form of bytes to avoid string overhead.  This mirrors
+// the technique used in the fmt package.
+var (
+	panicBytes            = []byte("(PANIC=")
+	plusBytes             = []byte("+")
+	iBytes                = []byte("i")
+	trueBytes             = []byte("true")
+	falseBytes            = []byte("false")
+	interfaceBytes        = []byte("(interface {})")
+	commaNewlineBytes     = []byte(",\n")
+	newlineBytes          = []byte("\n")
+	openBraceBytes        = []byte("{")
+	openBraceNewlineBytes = []byte("{\n")
+	closeBraceBytes       = []byte("}")
+	asteriskBytes         = []byte("*")
+	colonBytes            = []byte(":")
+	colonSpaceBytes       = []byte(": ")
+	openParenBytes        = []byte("(")
+	closeParenBytes       = []byte(")")
+	spaceBytes            = []byte(" ")
+	pointerChainBytes     = []byte("->")
+	nilAngleBytes         = []byte("<nil>")
+	maxNewlineBytes       = []byte("<max depth reached>\n")
+	maxShortBytes         = []byte("<max>")
+	circularBytes         = []byte("<already shown>")
+	circularShortBytes    = []byte("<shown>")
+	invalidAngleBytes     = []byte("<invalid>")
+	openBracketBytes      = []byte("[")
+	closeBracketBytes     = []byte("]")
+	percentBytes          = []byte("%")
+	precisionBytes        = []byte(".")
+	openAngleBytes        = []byte("<")
+	closeAngleBytes       = []byte(">")
+	openMapBytes          = []byte("map[")
+	closeMapBytes         = []byte("]")
+	lenEqualsBytes        = []byte("len=")
+	capEqualsBytes        = []byte("cap=")
+)
+
+// hexDigits is used to map a decimal value to a hex digit.
+var hexDigits = "0123456789abcdef"
+
+// catchPanic handles any panics that might occur during the handleMethods
+// calls.
+func catchPanic(w io.Writer, v reflect.Value) {
+	if err := recover(); err != nil {
+		w.Write(panicBytes)
+		fmt.Fprintf(w, "%v", err)
+		w.Write(closeParenBytes)
+	}
+}
+
+// handleMethods attempts to call the Error and String methods on the underlying
+// type the passed reflect.Value represents and outputes the result to Writer w.
+//
+// It handles panics in any called methods by catching and displaying the error
+// as the formatted value.
+func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
+	// We need an interface to check if the type implements the error or
+	// Stringer interface.  However, the reflect package won't give us an
+	// interface on certain things like unexported struct fields in order
+	// to enforce visibility rules.  We use unsafe, when it's available,
+	// to bypass these restrictions since this package does not mutate the
+	// values.
+	if !v.CanInterface() {
+		if UnsafeDisabled {
+			return false
+		}
+
+		v = unsafeReflectValue(v)
+	}
+
+	// Choose whether or not to do error and Stringer interface lookups against
+	// the base type or a pointer to the base type depending on settings.
+	// Technically calling one of these methods with a pointer receiver can
+	// mutate the value, however, types which choose to satisify an error or
+	// Stringer interface with a pointer receiver should not be mutating their
+	// state inside these interface methods.
+	if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
+		v = unsafeReflectValue(v)
+	}
+	if v.CanAddr() {
+		v = v.Addr()
+	}
+
+	// Is it an error or Stringer?
+	switch iface := v.Interface().(type) {
+	case error:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.Error()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+
+		w.Write([]byte(iface.Error()))
+		return true
+
+	case fmt.Stringer:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.String()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+		w.Write([]byte(iface.String()))
+		return true
+	}
+	return false
+}
+
+// printBool outputs a boolean value as true or false to Writer w.
+func printBool(w io.Writer, val bool) {
+	if val {
+		w.Write(trueBytes)
+	} else {
+		w.Write(falseBytes)
+	}
+}
+
+// printInt outputs a signed integer value to Writer w.
+func printInt(w io.Writer, val int64, base int) {
+	w.Write([]byte(strconv.FormatInt(val, base)))
+}
+
+// printUint outputs an unsigned integer value to Writer w.
+func printUint(w io.Writer, val uint64, base int) {
+	w.Write([]byte(strconv.FormatUint(val, base)))
+}
+
+// printFloat outputs a floating point value using the specified precision,
+// which is expected to be 32 or 64bit, to Writer w.
+func printFloat(w io.Writer, val float64, precision int) {
+	w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
+}
+
+// printComplex outputs a complex value using the specified float precision
+// for the real and imaginary parts to Writer w.
+func printComplex(w io.Writer, c complex128, floatPrecision int) {
+	r := real(c)
+	w.Write(openParenBytes)
+	w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
+	i := imag(c)
+	if i >= 0 {
+		w.Write(plusBytes)
+	}
+	w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
+	w.Write(iBytes)
+	w.Write(closeParenBytes)
+}
+
+// printHexPtr outputs a uintptr formatted as hexidecimal with a leading '0x'
+// prefix to Writer w.
+func printHexPtr(w io.Writer, p uintptr) {
+	// Null pointer.
+	num := uint64(p)
+	if num == 0 {
+		w.Write(nilAngleBytes)
+		return
+	}
+
+	// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
+	buf := make([]byte, 18)
+
+	// It's simpler to construct the hex string right to left.
+	base := uint64(16)
+	i := len(buf) - 1
+	for num >= base {
+		buf[i] = hexDigits[num%base]
+		num /= base
+		i--
+	}
+	buf[i] = hexDigits[num]
+
+	// Add '0x' prefix.
+	i--
+	buf[i] = 'x'
+	i--
+	buf[i] = '0'
+
+	// Strip unused leading bytes.
+	buf = buf[i:]
+	w.Write(buf)
+}
+
+// valuesSorter implements sort.Interface to allow a slice of reflect.Value
+// elements to be sorted.
+type valuesSorter struct {
+	values  []reflect.Value
+	strings []string // either nil or same len and values
+	cs      *ConfigState
+}
+
+// newValuesSorter initializes a valuesSorter instance, which holds a set of
+// surrogate keys on which the data should be sorted.  It uses flags in
+// ConfigState to decide if and how to populate those surrogate keys.
+func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
+	vs := &valuesSorter{values: values, cs: cs}
+	if canSortSimply(vs.values[0].Kind()) {
+		return vs
+	}
+	if !cs.DisableMethods {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			b := bytes.Buffer{}
+			if !handleMethods(cs, &b, vs.values[i]) {
+				vs.strings = nil
+				break
+			}
+			vs.strings[i] = b.String()
+		}
+	}
+	if vs.strings == nil && cs.SpewKeys {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
+		}
+	}
+	return vs
+}
+
+// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
+// directly, or whether it should be considered for sorting by surrogate keys
+// (if the ConfigState allows it).
+func canSortSimply(kind reflect.Kind) bool {
+	// This switch parallels valueSortLess, except for the default case.
+	switch kind {
+	case reflect.Bool:
+		return true
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return true
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return true
+	case reflect.Float32, reflect.Float64:
+		return true
+	case reflect.String:
+		return true
+	case reflect.Uintptr:
+		return true
+	case reflect.Array:
+		return true
+	}
+	return false
+}
+
+// Len returns the number of values in the slice.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Len() int {
+	return len(s.values)
+}
+
+// Swap swaps the values at the passed indices.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Swap(i, j int) {
+	s.values[i], s.values[j] = s.values[j], s.values[i]
+	if s.strings != nil {
+		s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
+	}
+}
+
+// valueSortLess returns whether the first value should sort before the second
+// value.  It is used by valueSorter.Less as part of the sort.Interface
+// implementation.
+func valueSortLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return a.Int() < b.Int()
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return a.Uint() < b.Uint()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.String:
+		return a.String() < b.String()
+	case reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Array:
+		// Compare the contents of both arrays.
+		l := a.Len()
+		for i := 0; i < l; i++ {
+			av := a.Index(i)
+			bv := b.Index(i)
+			if av.Interface() == bv.Interface() {
+				continue
+			}
+			return valueSortLess(av, bv)
+		}
+	}
+	return a.String() < b.String()
+}
+
+// Less returns whether the value at index i should sort before the
+// value at index j.  It is part of the sort.Interface implementation.
+func (s *valuesSorter) Less(i, j int) bool {
+	if s.strings == nil {
+		return valueSortLess(s.values[i], s.values[j])
+	}
+	return s.strings[i] < s.strings[j]
+}
+
+// sortValues is a sort function that handles both native types and any type that
+// can be converted to error or Stringer.  Other inputs are sorted according to
+// their Value.String() value to ensure display stability.
+func sortValues(values []reflect.Value, cs *ConfigState) {
+	if len(values) == 0 {
+		return
+	}
+	sort.Sort(newValuesSorter(values, cs))
+}

vendor/github.com/davecgh/go-spew/spew/config.go

@@ -0,0 +1,297 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+// ConfigState houses the configuration options used by spew to format and
+// display values.  There is a global instance, Config, that is used to control
+// all top-level Formatter and Dump functionality.  Each ConfigState instance
+// provides methods equivalent to the top-level functions.
+//
+// The zero value for ConfigState provides no indentation.  You would typically
+// want to set it to a space or a tab.
+//
+// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
+// with default settings.  See the documentation of NewDefaultConfig for default
+// values.
+type ConfigState struct {
+	// Indent specifies the string to use for each indentation level.  The
+	// global config instance that all top-level functions use set this to a
+	// single space by default.  If you would like more indentation, you might
+	// set this to a tab with "\t" or perhaps two spaces with "  ".
+	Indent string
+
+	// MaxDepth controls the maximum number of levels to descend into nested
+	// data structures.  The default, 0, means there is no limit.
+	//
+	// NOTE: Circular data structures are properly detected, so it is not
+	// necessary to set this value unless you specifically want to limit deeply
+	// nested data structures.
+	MaxDepth int
+
+	// DisableMethods specifies whether or not error and Stringer interfaces are
+	// invoked for types that implement them.
+	DisableMethods bool
+
+	// DisablePointerMethods specifies whether or not to check for and invoke
+	// error and Stringer interfaces on types which only accept a pointer
+	// receiver when the current type is not a pointer.
+	//
+	// NOTE: This might be an unsafe action since calling one of these methods
+	// with a pointer receiver could technically mutate the value, however,
+	// in practice, types which choose to satisify an error or Stringer
+	// interface with a pointer receiver should not be mutating their state
+	// inside these interface methods.  As a result, this option relies on
+	// access to the unsafe package, so it will not have any effect when
+	// running in environments without access to the unsafe package such as
+	// Google App Engine or with the "disableunsafe" build tag specified.
+	DisablePointerMethods bool
+
+	// ContinueOnMethod specifies whether or not recursion should continue once
+	// a custom error or Stringer interface is invoked.  The default, false,
+	// means it will print the results of invoking the custom error or Stringer
+	// interface and return immediately instead of continuing to recurse into
+	// the internals of the data type.
+	//
+	// NOTE: This flag does not have any effect if method invocation is disabled
+	// via the DisableMethods or DisablePointerMethods options.
+	ContinueOnMethod bool
+
+	// SortKeys specifies map keys should be sorted before being printed. Use
+	// this to have a more deterministic, diffable output.  Note that only
+	// native types (bool, int, uint, floats, uintptr and string) and types
+	// that support the error or Stringer interfaces (if methods are
+	// enabled) are supported, with other types sorted according to the
+	// reflect.Value.String() output which guarantees display stability.
+	SortKeys bool
+
+	// SpewKeys specifies that, as a last resort attempt, map keys should
+	// be spewed to strings and sorted by those strings.  This is only
+	// considered if SortKeys is true.
+	SpewKeys bool
+}
+
+// Config is the active configuration of the top-level functions.
+// The configuration can be changed by modifying the contents of spew.Config.
+var Config = ConfigState{Indent: " "}
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the formatted string as a value that satisfies error.  See NewFormatter
+// for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, c.convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, c.convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, c.convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a Formatter interface returned by c.NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, c.convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(c.convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, c.convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(c.convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprint(a ...interface{}) string {
+	return fmt.Sprint(c.convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, c.convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a Formatter interface returned by c.NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(c.convertArgs(a)...)
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+c.Printf, c.Println, or c.Printf.
+*/
+func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(c, v)
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
+	fdump(c, w, a...)
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by modifying the public members
+of c.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func (c *ConfigState) Dump(a ...interface{}) {
+	fdump(c, os.Stdout, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func (c *ConfigState) Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(c, &buf, a...)
+	return buf.String()
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a spew Formatter interface using
+// the ConfigState associated with s.
+func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = newFormatter(c, arg)
+	}
+	return formatters
+}
+
+// NewDefaultConfig returns a ConfigState with the following default settings.
+//
+// 	Indent: " "
+// 	MaxDepth: 0
+// 	DisableMethods: false
+// 	DisablePointerMethods: false
+// 	ContinueOnMethod: false
+// 	SortKeys: false
+func NewDefaultConfig() *ConfigState {
+	return &ConfigState{Indent: " "}
+}

vendor/github.com/davecgh/go-spew/spew/doc.go

@@ -0,0 +1,202 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+Package spew implements a deep pretty printer for Go data structures to aid in
+debugging.
+
+A quick overview of the additional features spew provides over the built-in
+printing facilities for Go data types are as follows:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output (only when using
+	  Dump style)
+
+There are two different approaches spew allows for dumping Go data structures:
+
+	* Dump style which prints with newlines, customizable indentation,
+	  and additional debug information such as types and all pointer addresses
+	  used to indirect to the final value
+	* A custom Formatter interface that integrates cleanly with the standard fmt
+	  package and replaces %v, %+v, %#v, and %#+v to provide inline printing
+	  similar to the default %v while providing the additional functionality
+	  outlined above and passing unsupported format verbs such as %x and %q
+	  along to fmt
+
+Quick Start
+
+This section demonstrates how to quickly get started with spew.  See the
+sections below for further details on formatting and configuration options.
+
+To dump a variable with full newlines, indentation, type, and pointer
+information use Dump, Fdump, or Sdump:
+	spew.Dump(myVar1, myVar2, ...)
+	spew.Fdump(someWriter, myVar1, myVar2, ...)
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Alternatively, if you would prefer to use format strings with a compacted inline
+printing style, use the convenience wrappers Printf, Fprintf, etc with
+%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
+%#+v (adds types and pointer addresses):
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+Configuration Options
+
+Configuration of spew is handled by fields in the ConfigState type.  For
+convenience, all of the top-level functions use a global state available
+via the spew.Config global.
+
+It is also possible to create a ConfigState instance that provides methods
+equivalent to the top-level functions.  This allows concurrent configuration
+options.  See the ConfigState documentation for more details.
+
+The following configuration options are available:
+	* Indent
+		String to use for each indentation level for Dump functions.
+		It is a single space by default.  A popular alternative is "\t".
+
+	* MaxDepth
+		Maximum number of levels to descend into nested data structures.
+		There is no limit by default.
+
+	* DisableMethods
+		Disables invocation of error and Stringer interface methods.
+		Method invocation is enabled by default.
+
+	* DisablePointerMethods
+		Disables invocation of error and Stringer interface methods on types
+		which only accept pointer receivers from non-pointer variables.
+		Pointer method invocation is enabled by default.
+
+	* ContinueOnMethod
+		Enables recursion into types after invoking error and Stringer interface
+		methods. Recursion after method invocation is disabled by default.
+
+	* SortKeys
+		Specifies map keys should be sorted before being printed. Use
+		this to have a more deterministic, diffable output.  Note that
+		only native types (bool, int, uint, floats, uintptr and string)
+		and types which implement error or Stringer interfaces are
+		supported with other types sorted according to the
+		reflect.Value.String() output which guarantees display
+		stability.  Natural map order is used by default.
+
+	* SpewKeys
+		Specifies that, as a last resort attempt, map keys should be
+		spewed to strings and sorted by those strings.  This is only
+		considered if SortKeys is true.
+
+Dump Usage
+
+Simply call spew.Dump with a list of variables you want to dump:
+
+	spew.Dump(myVar1, myVar2, ...)
+
+You may also call spew.Fdump if you would prefer to output to an arbitrary
+io.Writer.  For example, to dump to standard error:
+
+	spew.Fdump(os.Stderr, myVar1, myVar2, ...)
+
+A third option is to call spew.Sdump to get the formatted output as a string:
+
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Sample Dump Output
+
+See the Dump example for details on the setup of the types and variables being
+shown here.
+
+	(main.Foo) {
+	 unexportedField: (*main.Bar)(0xf84002e210)({
+	  flag: (main.Flag) flagTwo,
+	  data: (uintptr) <nil>
+	 }),
+	 ExportedField: (map[interface {}]interface {}) (len=1) {
+	  (string) (len=3) "one": (bool) true
+	 }
+	}
+
+Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
+command as shown.
+	([]uint8) (len=32 cap=32) {
+	 00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
+	 00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
+	 00000020  31 32                                             |12|
+	}
+
+Custom Formatter
+
+Spew provides a custom formatter that implements the fmt.Formatter interface
+so that it integrates cleanly with standard fmt package printing functions. The
+formatter is useful for inline printing of smaller data types similar to the
+standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Custom Formatter Usage
+
+The simplest way to make use of the spew custom formatter is to call one of the
+convenience functions such as spew.Printf, spew.Println, or spew.Printf.  The
+functions have syntax you are most likely already familiar with:
+
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Println(myVar, myVar2)
+	spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+See the Index for the full list convenience functions.
+
+Sample Formatter Output
+
+Double pointer to a uint8:
+	  %v: <**>5
+	 %+v: <**>(0xf8400420d0->0xf8400420c8)5
+	 %#v: (**uint8)5
+	%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
+
+Pointer to circular struct with a uint8 field and a pointer to itself:
+	  %v: <*>{1 <*><shown>}
+	 %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
+	 %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
+	%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
+
+See the Printf example for details on the setup of variables being shown
+here.
+
+Errors
+
+Since it is possible for custom Stringer/error interfaces to panic, spew
+detects them and handles them internally by printing the panic information
+inline with the output.  Since spew is intended to provide deep pretty printing
+capabilities on structures, it intentionally does not return any errors.
+*/
+package spew

vendor/github.com/davecgh/go-spew/spew/dump.go

@@ -0,0 +1,509 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	// uint8Type is a reflect.Type representing a uint8.  It is used to
+	// convert cgo types to uint8 slices for hexdumping.
+	uint8Type = reflect.TypeOf(uint8(0))
+
+	// cCharRE is a regular expression that matches a cgo char.
+	// It is used to detect character arrays to hexdump them.
+	cCharRE = regexp.MustCompile("^.*\\._Ctype_char$")
+
+	// cUnsignedCharRE is a regular expression that matches a cgo unsigned
+	// char.  It is used to detect unsigned character arrays to hexdump
+	// them.
+	cUnsignedCharRE = regexp.MustCompile("^.*\\._Ctype_unsignedchar$")
+
+	// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
+	// It is used to detect uint8_t arrays to hexdump them.
+	cUint8tCharRE = regexp.MustCompile("^.*\\._Ctype_uint8_t$")
+)
+
+// dumpState contains information about the state of a dump operation.
+type dumpState struct {
+	w                io.Writer
+	depth            int
+	pointers         map[uintptr]int
+	ignoreNextType   bool
+	ignoreNextIndent bool
+	cs               *ConfigState
+}
+
+// indent performs indentation according to the depth level and cs.Indent
+// option.
+func (d *dumpState) indent() {
+	if d.ignoreNextIndent {
+		d.ignoreNextIndent = false
+		return
+	}
+	d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface && !v.IsNil() {
+		v = v.Elem()
+	}
+	return v
+}
+
+// dumpPtr handles formatting of pointers by indirecting them as necessary.
+func (d *dumpState) dumpPtr(v reflect.Value) {
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range d.pointers {
+		if depth >= d.depth {
+			delete(d.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by dereferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := d.pointers[addr]; ok && pd < d.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		d.pointers[addr] = d.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type information.
+	d.w.Write(openParenBytes)
+	d.w.Write(bytes.Repeat(asteriskBytes, indirects))
+	d.w.Write([]byte(ve.Type().String()))
+	d.w.Write(closeParenBytes)
+
+	// Display pointer information.
+	if len(pointerChain) > 0 {
+		d.w.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				d.w.Write(pointerChainBytes)
+			}
+			printHexPtr(d.w, addr)
+		}
+		d.w.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	d.w.Write(openParenBytes)
+	switch {
+	case nilFound == true:
+		d.w.Write(nilAngleBytes)
+
+	case cycleFound == true:
+		d.w.Write(circularBytes)
+
+	default:
+		d.ignoreNextType = true
+		d.dump(ve)
+	}
+	d.w.Write(closeParenBytes)
+}
+
+// dumpSlice handles formatting of arrays and slices.  Byte (uint8 under
+// reflection) arrays and slices are dumped in hexdump -C fashion.
+func (d *dumpState) dumpSlice(v reflect.Value) {
+	// Determine whether this type should be hex dumped or not.  Also,
+	// for types which should be hexdumped, try to use the underlying data
+	// first, then fall back to trying to convert them to a uint8 slice.
+	var buf []uint8
+	doConvert := false
+	doHexDump := false
+	numEntries := v.Len()
+	if numEntries > 0 {
+		vt := v.Index(0).Type()
+		vts := vt.String()
+		switch {
+		// C types that need to be converted.
+		case cCharRE.MatchString(vts):
+			fallthrough
+		case cUnsignedCharRE.MatchString(vts):
+			fallthrough
+		case cUint8tCharRE.MatchString(vts):
+			doConvert = true
+
+		// Try to use existing uint8 slices and fall back to converting
+		// and copying if that fails.
+		case vt.Kind() == reflect.Uint8:
+			// We need an addressable interface to convert the type
+			// to a byte slice.  However, the reflect package won't
+			// give us an interface on certain things like
+			// unexported struct fields in order to enforce
+			// visibility rules.  We use unsafe, when available, to
+			// bypass these restrictions since this package does not
+			// mutate the values.
+			vs := v
+			if !vs.CanInterface() || !vs.CanAddr() {
+				vs = unsafeReflectValue(vs)
+			}
+			if !UnsafeDisabled {
+				vs = vs.Slice(0, numEntries)
+
+				// Use the existing uint8 slice if it can be
+				// type asserted.
+				iface := vs.Interface()
+				if slice, ok := iface.([]uint8); ok {
+					buf = slice
+					doHexDump = true
+					break
+				}
+			}
+
+			// The underlying data needs to be converted if it can't
+			// be type asserted to a uint8 slice.
+			doConvert = true
+		}
+
+		// Copy and convert the underlying type if needed.
+		if doConvert && vt.ConvertibleTo(uint8Type) {
+			// Convert and copy each element into a uint8 byte
+			// slice.
+			buf = make([]uint8, numEntries)
+			for i := 0; i < numEntries; i++ {
+				vv := v.Index(i)
+				buf[i] = uint8(vv.Convert(uint8Type).Uint())
+			}
+			doHexDump = true
+		}
+	}
+
+	// Hexdump the entire slice as needed.
+	if doHexDump {
+		indent := strings.Repeat(d.cs.Indent, d.depth)
+		str := indent + hex.Dump(buf)
+		str = strings.Replace(str, "\n", "\n"+indent, -1)
+		str = strings.TrimRight(str, d.cs.Indent)
+		d.w.Write([]byte(str))
+		return
+	}
+
+	// Recursively call dump for each item.
+	for i := 0; i < numEntries; i++ {
+		d.dump(d.unpackValue(v.Index(i)))
+		if i < (numEntries - 1) {
+			d.w.Write(commaNewlineBytes)
+		} else {
+			d.w.Write(newlineBytes)
+		}
+	}
+}
+
+// dump is the main workhorse for dumping a value.  It uses the passed reflect
+// value to figure out what kind of object we are dealing with and formats it
+// appropriately.  It is a recursive function, however circular data structures
+// are detected and handled properly.
+func (d *dumpState) dump(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		d.w.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		d.indent()
+		d.dumpPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !d.ignoreNextType {
+		d.indent()
+		d.w.Write(openParenBytes)
+		d.w.Write([]byte(v.Type().String()))
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+	d.ignoreNextType = false
+
+	// Display length and capacity if the built-in len and cap functions
+	// work with the value's kind and the len/cap itself is non-zero.
+	valueLen, valueCap := 0, 0
+	switch v.Kind() {
+	case reflect.Array, reflect.Slice, reflect.Chan:
+		valueLen, valueCap = v.Len(), v.Cap()
+	case reflect.Map, reflect.String:
+		valueLen = v.Len()
+	}
+	if valueLen != 0 || valueCap != 0 {
+		d.w.Write(openParenBytes)
+		if valueLen != 0 {
+			d.w.Write(lenEqualsBytes)
+			printInt(d.w, int64(valueLen), 10)
+		}
+		if valueCap != 0 {
+			if valueLen != 0 {
+				d.w.Write(spaceBytes)
+			}
+			d.w.Write(capEqualsBytes)
+			printInt(d.w, int64(valueCap), 10)
+		}
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+
+	// Call Stringer/error interfaces if they exist and the handle methods flag
+	// is enabled
+	if !d.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(d.cs, d.w, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(d.w, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(d.w, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(d.w, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(d.w, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(d.w, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(d.w, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(d.w, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			d.dumpSlice(v)
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.String:
+		d.w.Write([]byte(strconv.Quote(v.String())))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			numEntries := v.Len()
+			keys := v.MapKeys()
+			if d.cs.SortKeys {
+				sortValues(keys, d.cs)
+			}
+			for i, key := range keys {
+				d.dump(d.unpackValue(key))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.MapIndex(key)))
+				if i < (numEntries - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Struct:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			vt := v.Type()
+			numFields := v.NumField()
+			for i := 0; i < numFields; i++ {
+				d.indent()
+				vtf := vt.Field(i)
+				d.w.Write([]byte(vtf.Name))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.Field(i)))
+				if i < (numFields - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(d.w, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(d.w, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it in case any new
+	// types are added.
+	default:
+		if v.CanInterface() {
+			fmt.Fprintf(d.w, "%v", v.Interface())
+		} else {
+			fmt.Fprintf(d.w, "%v", v.String())
+		}
+	}
+}
+
+// fdump is a helper function to consolidate the logic from the various public
+// methods which take varying writers and config states.
+func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
+	for _, arg := range a {
+		if arg == nil {
+			w.Write(interfaceBytes)
+			w.Write(spaceBytes)
+			w.Write(nilAngleBytes)
+			w.Write(newlineBytes)
+			continue
+		}
+
+		d := dumpState{w: w, cs: cs}
+		d.pointers = make(map[uintptr]int)
+		d.dump(reflect.ValueOf(arg))
+		d.w.Write(newlineBytes)
+	}
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func Fdump(w io.Writer, a ...interface{}) {
+	fdump(&Config, w, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(&Config, &buf, a...)
+	return buf.String()
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by an exported package global,
+spew.Config.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func Dump(a ...interface{}) {
+	fdump(&Config, os.Stdout, a...)
+}

vendor/github.com/davecgh/go-spew/spew/format.go

@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+// supportedFlags is a list of all the character flags supported by fmt package.
+const supportedFlags = "0-+# "
+
+// formatState implements the fmt.Formatter interface and contains information
+// about the state of a formatting operation.  The NewFormatter function can
+// be used to get a new Formatter which can be used directly as arguments
+// in standard fmt package printing calls.
+type formatState struct {
+	value          interface{}
+	fs             fmt.State
+	depth          int
+	pointers       map[uintptr]int
+	ignoreNextType bool
+	cs             *ConfigState
+}
+
+// buildDefaultFormat recreates the original format string without precision
+// and width information to pass in to fmt.Sprintf in the case of an
+// unrecognized type.  Unless new types are added to the language, this
+// function won't ever be called.
+func (f *formatState) buildDefaultFormat() (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	buf.WriteRune('v')
+
+	format = buf.String()
+	return format
+}
+
+// constructOrigFormat recreates the original format string including precision
+// and width information to pass along to the standard fmt package.  This allows
+// automatic deferral of all format strings this package doesn't support.
+func (f *formatState) constructOrigFormat(verb rune) (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	if width, ok := f.fs.Width(); ok {
+		buf.WriteString(strconv.Itoa(width))
+	}
+
+	if precision, ok := f.fs.Precision(); ok {
+		buf.Write(precisionBytes)
+		buf.WriteString(strconv.Itoa(precision))
+	}
+
+	buf.WriteRune(verb)
+
+	format = buf.String()
+	return format
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible and
+// ensures that types for values which have been unpacked from an interface
+// are displayed when the show types flag is also set.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface {
+		f.ignoreNextType = false
+		if !v.IsNil() {
+			v = v.Elem()
+		}
+	}
+	return v
+}
+
+// formatPtr handles formatting of pointers by indirecting them as necessary.
+func (f *formatState) formatPtr(v reflect.Value) {
+	// Display nil if top level pointer is nil.
+	showTypes := f.fs.Flag('#')
+	if v.IsNil() && (!showTypes || f.ignoreNextType) {
+		f.fs.Write(nilAngleBytes)
+		return
+	}
+
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range f.pointers {
+		if depth >= f.depth {
+			delete(f.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to possibly show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by derferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := f.pointers[addr]; ok && pd < f.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		f.pointers[addr] = f.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type or indirection level depending on flags.
+	if showTypes && !f.ignoreNextType {
+		f.fs.Write(openParenBytes)
+		f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
+		f.fs.Write([]byte(ve.Type().String()))
+		f.fs.Write(closeParenBytes)
+	} else {
+		if nilFound || cycleFound {
+			indirects += strings.Count(ve.Type().String(), "*")
+		}
+		f.fs.Write(openAngleBytes)
+		f.fs.Write([]byte(strings.Repeat("*", indirects)))
+		f.fs.Write(closeAngleBytes)
+	}
+
+	// Display pointer information depending on flags.
+	if f.fs.Flag('+') && (len(pointerChain) > 0) {
+		f.fs.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				f.fs.Write(pointerChainBytes)
+			}
+			printHexPtr(f.fs, addr)
+		}
+		f.fs.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	switch {
+	case nilFound == true:
+		f.fs.Write(nilAngleBytes)
+
+	case cycleFound == true:
+		f.fs.Write(circularShortBytes)
+
+	default:
+		f.ignoreNextType = true
+		f.format(ve)
+	}
+}
+
+// format is the main workhorse for providing the Formatter interface.  It
+// uses the passed reflect value to figure out what kind of object we are
+// dealing with and formats it appropriately.  It is a recursive function,
+// however circular data structures are detected and handled properly.
+func (f *formatState) format(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		f.fs.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		f.formatPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !f.ignoreNextType && f.fs.Flag('#') {
+		f.fs.Write(openParenBytes)
+		f.fs.Write([]byte(v.Type().String()))
+		f.fs.Write(closeParenBytes)
+	}
+	f.ignoreNextType = false
+
+	// Call Stringer/error interfaces if they exist and the handle methods
+	// flag is enabled.
+	if !f.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(f.cs, f.fs, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(f.fs, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(f.fs, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(f.fs, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(f.fs, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(f.fs, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(f.fs, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(f.fs, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		f.fs.Write(openBracketBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			numEntries := v.Len()
+			for i := 0; i < numEntries; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.Index(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBracketBytes)
+
+	case reflect.String:
+		f.fs.Write([]byte(v.String()))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+
+		f.fs.Write(openMapBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			keys := v.MapKeys()
+			if f.cs.SortKeys {
+				sortValues(keys, f.cs)
+			}
+			for i, key := range keys {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(key))
+				f.fs.Write(colonBytes)
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.MapIndex(key)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeMapBytes)
+
+	case reflect.Struct:
+		numFields := v.NumField()
+		f.fs.Write(openBraceBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			vt := v.Type()
+			for i := 0; i < numFields; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				vtf := vt.Field(i)
+				if f.fs.Flag('+') || f.fs.Flag('#') {
+					f.fs.Write([]byte(vtf.Name))
+					f.fs.Write(colonBytes)
+				}
+				f.format(f.unpackValue(v.Field(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(f.fs, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(f.fs, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it if any get added.
+	default:
+		format := f.buildDefaultFormat()
+		if v.CanInterface() {
+			fmt.Fprintf(f.fs, format, v.Interface())
+		} else {
+			fmt.Fprintf(f.fs, format, v.String())
+		}
+	}
+}
+
+// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
+// details.
+func (f *formatState) Format(fs fmt.State, verb rune) {
+	f.fs = fs
+
+	// Use standard formatting for verbs that are not v.
+	if verb != 'v' {
+		format := f.constructOrigFormat(verb)
+		fmt.Fprintf(fs, format, f.value)
+		return
+	}
+
+	if f.value == nil {
+		if fs.Flag('#') {
+			fs.Write(interfaceBytes)
+		}
+		fs.Write(nilAngleBytes)
+		return
+	}
+
+	f.format(reflect.ValueOf(f.value))
+}
+
+// newFormatter is a helper function to consolidate the logic from the various
+// public methods which take varying config states.
+func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
+	fs := &formatState{value: v, cs: cs}
+	fs.pointers = make(map[uintptr]int)
+	return fs
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+Printf, Println, or Fprintf.
+*/
+func NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(&Config, v)
+}

vendor/github.com/davecgh/go-spew/spew/spew.go

@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2013 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"fmt"
+	"io"
+)
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the formatted string as a value that satisfies error.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a default Formatter interface returned by NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
+func Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
+func Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprint(a ...interface{}) string {
+	return fmt.Sprint(convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(convertArgs(a)...)
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a default spew Formatter interface.
+func convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = NewFormatter(arg)
+	}
+	return formatters
+}

vendor/github.com/docker/distribution/LICENSE

@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

vendor/github.com/docker/distribution/digest/digest.go

@@ -0,0 +1,139 @@
+package digest
+
+import (
+	"fmt"
+	"hash"
+	"io"
+	"regexp"
+	"strings"
+)
+
+const (
+	// DigestSha256EmptyTar is the canonical sha256 digest of empty data
+	DigestSha256EmptyTar = "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+)
+
+// Digest allows simple protection of hex formatted digest strings, prefixed
+// by their algorithm. Strings of type Digest have some guarantee of being in
+// the correct format and it provides quick access to the components of a
+// digest string.
+//
+// The following is an example of the contents of Digest types:
+//
+// 	sha256:7173b809ca12ec5dee4506cd86be934c4596dd234ee82c0662eac04a8c2c71dc
+//
+// This allows to abstract the digest behind this type and work only in those
+// terms.
+type Digest string
+
+// NewDigest returns a Digest from alg and a hash.Hash object.
+func NewDigest(alg Algorithm, h hash.Hash) Digest {
+	return NewDigestFromBytes(alg, h.Sum(nil))
+}
+
+// NewDigestFromBytes returns a new digest from the byte contents of p.
+// Typically, this can come from hash.Hash.Sum(...) or xxx.SumXXX(...)
+// functions. This is also useful for rebuilding digests from binary
+// serializations.
+func NewDigestFromBytes(alg Algorithm, p []byte) Digest {
+	return Digest(fmt.Sprintf("%s:%x", alg, p))
+}
+
+// NewDigestFromHex returns a Digest from alg and a the hex encoded digest.
+func NewDigestFromHex(alg, hex string) Digest {
+	return Digest(fmt.Sprintf("%s:%s", alg, hex))
+}
+
+// DigestRegexp matches valid digest types.
+var DigestRegexp = regexp.MustCompile(`[a-zA-Z0-9-_+.]+:[a-fA-F0-9]+`)
+
+// DigestRegexpAnchored matches valid digest types, anchored to the start and end of the match.
+var DigestRegexpAnchored = regexp.MustCompile(`^` + DigestRegexp.String() + `$`)
+
+var (
+	// ErrDigestInvalidFormat returned when digest format invalid.
+	ErrDigestInvalidFormat = fmt.Errorf("invalid checksum digest format")
+
+	// ErrDigestInvalidLength returned when digest has invalid length.
+	ErrDigestInvalidLength = fmt.Errorf("invalid checksum digest length")
+
+	// ErrDigestUnsupported returned when the digest algorithm is unsupported.
+	ErrDigestUnsupported = fmt.Errorf("unsupported digest algorithm")
+)
+
+// ParseDigest parses s and returns the validated digest object. An error will
+// be returned if the format is invalid.
+func ParseDigest(s string) (Digest, error) {
+	d := Digest(s)
+
+	return d, d.Validate()
+}
+
+// FromReader returns the most valid digest for the underlying content using
+// the canonical digest algorithm.
+func FromReader(rd io.Reader) (Digest, error) {
+	return Canonical.FromReader(rd)
+}
+
+// FromBytes digests the input and returns a Digest.
+func FromBytes(p []byte) Digest {
+	return Canonical.FromBytes(p)
+}
+
+// Validate checks that the contents of d is a valid digest, returning an
+// error if not.
+func (d Digest) Validate() error {
+	s := string(d)
+
+	if !DigestRegexpAnchored.MatchString(s) {
+		return ErrDigestInvalidFormat
+	}
+
+	i := strings.Index(s, ":")
+	if i < 0 {
+		return ErrDigestInvalidFormat
+	}
+
+	// case: "sha256:" with no hex.
+	if i+1 == len(s) {
+		return ErrDigestInvalidFormat
+	}
+
+	switch algorithm := Algorithm(s[:i]); algorithm {
+	case SHA256, SHA384, SHA512:
+		if algorithm.Size()*2 != len(s[i+1:]) {
+			return ErrDigestInvalidLength
+		}
+		break
+	default:
+		return ErrDigestUnsupported
+	}
+
+	return nil
+}
+
+// Algorithm returns the algorithm portion of the digest. This will panic if
+// the underlying digest is not in a valid format.
+func (d Digest) Algorithm() Algorithm {
+	return Algorithm(d[:d.sepIndex()])
+}
+
+// Hex returns the hex digest portion of the digest. This will panic if the
+// underlying digest is not in a valid format.
+func (d Digest) Hex() string {
+	return string(d[d.sepIndex()+1:])
+}
+
+func (d Digest) String() string {
+	return string(d)
+}
+
+func (d Digest) sepIndex() int {
+	i := strings.Index(string(d), ":")
+
+	if i < 0 {
+		panic("could not find ':' in digest: " + d)
+	}
+
+	return i
+}

vendor/github.com/docker/distribution/digest/digester.go

@@ -0,0 +1,155 @@
+package digest
+
+import (
+	"crypto"
+	"fmt"
+	"hash"
+	"io"
+)
+
+// Algorithm identifies and implementation of a digester by an identifier.
+// Note the that this defines both the hash algorithm used and the string
+// encoding.
+type Algorithm string
+
+// supported digest types
+const (
+	SHA256 Algorithm = "sha256" // sha256 with hex encoding
+	SHA384 Algorithm = "sha384" // sha384 with hex encoding
+	SHA512 Algorithm = "sha512" // sha512 with hex encoding
+
+	// Canonical is the primary digest algorithm used with the distribution
+	// project. Other digests may be used but this one is the primary storage
+	// digest.
+	Canonical = SHA256
+)
+
+var (
+	// TODO(stevvooe): Follow the pattern of the standard crypto package for
+	// registration of digests. Effectively, we are a registerable set and
+	// common symbol access.
+
+	// algorithms maps values to hash.Hash implementations. Other algorithms
+	// may be available but they cannot be calculated by the digest package.
+	algorithms = map[Algorithm]crypto.Hash{
+		SHA256: crypto.SHA256,
+		SHA384: crypto.SHA384,
+		SHA512: crypto.SHA512,
+	}
+)
+
+// Available returns true if the digest type is available for use. If this
+// returns false, New and Hash will return nil.
+func (a Algorithm) Available() bool {
+	h, ok := algorithms[a]
+	if !ok {
+		return false
+	}
+
+	// check availability of the hash, as well
+	return h.Available()
+}
+
+func (a Algorithm) String() string {
+	return string(a)
+}
+
+// Size returns number of bytes returned by the hash.
+func (a Algorithm) Size() int {
+	h, ok := algorithms[a]
+	if !ok {
+		return 0
+	}
+	return h.Size()
+}
+
+// Set implemented to allow use of Algorithm as a command line flag.
+func (a *Algorithm) Set(value string) error {
+	if value == "" {
+		*a = Canonical
+	} else {
+		// just do a type conversion, support is queried with Available.
+		*a = Algorithm(value)
+	}
+
+	return nil
+}
+
+// New returns a new digester for the specified algorithm. If the algorithm
+// does not have a digester implementation, nil will be returned. This can be
+// checked by calling Available before calling New.
+func (a Algorithm) New() Digester {
+	return &digester{
+		alg:  a,
+		hash: a.Hash(),
+	}
+}
+
+// Hash returns a new hash as used by the algorithm. If not available, the
+// method will panic. Check Algorithm.Available() before calling.
+func (a Algorithm) Hash() hash.Hash {
+	if !a.Available() {
+		// NOTE(stevvooe): A missing hash is usually a programming error that
+		// must be resolved at compile time. We don't import in the digest
+		// package to allow users to choose their hash implementation (such as
+		// when using stevvooe/resumable or a hardware accelerated package).
+		//
+		// Applications that may want to resolve the hash at runtime should
+		// call Algorithm.Available before call Algorithm.Hash().
+		panic(fmt.Sprintf("%v not available (make sure it is imported)", a))
+	}
+
+	return algorithms[a].New()
+}
+
+// FromReader returns the digest of the reader using the algorithm.
+func (a Algorithm) FromReader(rd io.Reader) (Digest, error) {
+	digester := a.New()
+
+	if _, err := io.Copy(digester.Hash(), rd); err != nil {
+		return "", err
+	}
+
+	return digester.Digest(), nil
+}
+
+// FromBytes digests the input and returns a Digest.
+func (a Algorithm) FromBytes(p []byte) Digest {
+	digester := a.New()
+
+	if _, err := digester.Hash().Write(p); err != nil {
+		// Writes to a Hash should never fail. None of the existing
+		// hash implementations in the stdlib or hashes vendored
+		// here can return errors from Write. Having a panic in this
+		// condition instead of having FromBytes return an error value
+		// avoids unnecessary error handling paths in all callers.
+		panic("write to hash function returned error: " + err.Error())
+	}
+
+	return digester.Digest()
+}
+
+// TODO(stevvooe): Allow resolution of verifiers using the digest type and
+// this registration system.
+
+// Digester calculates the digest of written data. Writes should go directly
+// to the return value of Hash, while calling Digest will return the current
+// value of the digest.
+type Digester interface {
+	Hash() hash.Hash // provides direct access to underlying hash instance.
+	Digest() Digest
+}
+
+// digester provides a simple digester definition that embeds a hasher.
+type digester struct {
+	alg  Algorithm
+	hash hash.Hash
+}
+
+func (d *digester) Hash() hash.Hash {
+	return d.hash
+}
+
+func (d *digester) Digest() Digest {
+	return NewDigest(d.alg, d.hash)
+}

vendor/github.com/docker/distribution/digest/doc.go

@@ -0,0 +1,42 @@
+// Package digest provides a generalized type to opaquely represent message
+// digests and their operations within the registry. The Digest type is
+// designed to serve as a flexible identifier in a content-addressable system.
+// More importantly, it provides tools and wrappers to work with
+// hash.Hash-based digests with little effort.
+//
+// Basics
+//
+// The format of a digest is simply a string with two parts, dubbed the
+// "algorithm" and the "digest", separated by a colon:
+//
+// 	<algorithm>:<digest>
+//
+// An example of a sha256 digest representation follows:
+//
+// 	sha256:7173b809ca12ec5dee4506cd86be934c4596dd234ee82c0662eac04a8c2c71dc
+//
+// In this case, the string "sha256" is the algorithm and the hex bytes are
+// the "digest".
+//
+// Because the Digest type is simply a string, once a valid Digest is
+// obtained, comparisons are cheap, quick and simple to express with the
+// standard equality operator.
+//
+// Verification
+//
+// The main benefit of using the Digest type is simple verification against a
+// given digest. The Verifier interface, modeled after the stdlib hash.Hash
+// interface, provides a common write sink for digest verification. After
+// writing is complete, calling the Verifier.Verified method will indicate
+// whether or not the stream of bytes matches the target digest.
+//
+// Missing Features
+//
+// In addition to the above, we intend to add the following features to this
+// package:
+//
+// 1. A Digester type that supports write sink digest calculation.
+//
+// 2. Suspend and resume of ongoing digest calculations to support efficient digest verification in the registry.
+//
+package digest

vendor/github.com/docker/distribution/digest/set.go

@@ -0,0 +1,245 @@
+package digest
+
+import (
+	"errors"
+	"sort"
+	"strings"
+	"sync"
+)
+
+var (
+	// ErrDigestNotFound is used when a matching digest
+	// could not be found in a set.
+	ErrDigestNotFound = errors.New("digest not found")
+
+	// ErrDigestAmbiguous is used when multiple digests
+	// are found in a set. None of the matching digests
+	// should be considered valid matches.
+	ErrDigestAmbiguous = errors.New("ambiguous digest string")
+)
+
+// Set is used to hold a unique set of digests which
+// may be easily referenced by easily  referenced by a string
+// representation of the digest as well as short representation.
+// The uniqueness of the short representation is based on other
+// digests in the set. If digests are omitted from this set,
+// collisions in a larger set may not be detected, therefore it
+// is important to always do short representation lookups on
+// the complete set of digests. To mitigate collisions, an
+// appropriately long short code should be used.
+type Set struct {
+	mutex   sync.RWMutex
+	entries digestEntries
+}
+
+// NewSet creates an empty set of digests
+// which may have digests added.
+func NewSet() *Set {
+	return &Set{
+		entries: digestEntries{},
+	}
+}
+
+// checkShortMatch checks whether two digests match as either whole
+// values or short values. This function does not test equality,
+// rather whether the second value could match against the first
+// value.
+func checkShortMatch(alg Algorithm, hex, shortAlg, shortHex string) bool {
+	if len(hex) == len(shortHex) {
+		if hex != shortHex {
+			return false
+		}
+		if len(shortAlg) > 0 && string(alg) != shortAlg {
+			return false
+		}
+	} else if !strings.HasPrefix(hex, shortHex) {
+		return false
+	} else if len(shortAlg) > 0 && string(alg) != shortAlg {
+		return false
+	}
+	return true
+}
+
+// Lookup looks for a digest matching the given string representation.
+// If no digests could be found ErrDigestNotFound will be returned
+// with an empty digest value. If multiple matches are found
+// ErrDigestAmbiguous will be returned with an empty digest value.
+func (dst *Set) Lookup(d string) (Digest, error) {
+	dst.mutex.RLock()
+	defer dst.mutex.RUnlock()
+	if len(dst.entries) == 0 {
+		return "", ErrDigestNotFound
+	}
+	var (
+		searchFunc func(int) bool
+		alg        Algorithm
+		hex        string
+	)
+	dgst, err := ParseDigest(d)
+	if err == ErrDigestInvalidFormat {
+		hex = d
+		searchFunc = func(i int) bool {
+			return dst.entries[i].val >= d
+		}
+	} else {
+		hex = dgst.Hex()
+		alg = dgst.Algorithm()
+		searchFunc = func(i int) bool {
+			if dst.entries[i].val == hex {
+				return dst.entries[i].alg >= alg
+			}
+			return dst.entries[i].val >= hex
+		}
+	}
+	idx := sort.Search(len(dst.entries), searchFunc)
+	if idx == len(dst.entries) || !checkShortMatch(dst.entries[idx].alg, dst.entries[idx].val, string(alg), hex) {
+		return "", ErrDigestNotFound
+	}
+	if dst.entries[idx].alg == alg && dst.entries[idx].val == hex {
+		return dst.entries[idx].digest, nil
+	}
+	if idx+1 < len(dst.entries) && checkShortMatch(dst.entries[idx+1].alg, dst.entries[idx+1].val, string(alg), hex) {
+		return "", ErrDigestAmbiguous
+	}
+
+	return dst.entries[idx].digest, nil
+}
+
+// Add adds the given digest to the set. An error will be returned
+// if the given digest is invalid. If the digest already exists in the
+// set, this operation will be a no-op.
+func (dst *Set) Add(d Digest) error {
+	if err := d.Validate(); err != nil {
+		return err
+	}
+	dst.mutex.Lock()
+	defer dst.mutex.Unlock()
+	entry := &digestEntry{alg: d.Algorithm(), val: d.Hex(), digest: d}
+	searchFunc := func(i int) bool {
+		if dst.entries[i].val == entry.val {
+			return dst.entries[i].alg >= entry.alg
+		}
+		return dst.entries[i].val >= entry.val
+	}
+	idx := sort.Search(len(dst.entries), searchFunc)
+	if idx == len(dst.entries) {
+		dst.entries = append(dst.entries, entry)
+		return nil
+	} else if dst.entries[idx].digest == d {
+		return nil
+	}
+
+	entries := append(dst.entries, nil)
+	copy(entries[idx+1:], entries[idx:len(entries)-1])
+	entries[idx] = entry
+	dst.entries = entries
+	return nil
+}
+
+// Remove removes the given digest from the set. An err will be
+// returned if the given digest is invalid. If the digest does
+// not exist in the set, this operation will be a no-op.
+func (dst *Set) Remove(d Digest) error {
+	if err := d.Validate(); err != nil {
+		return err
+	}
+	dst.mutex.Lock()
+	defer dst.mutex.Unlock()
+	entry := &digestEntry{alg: d.Algorithm(), val: d.Hex(), digest: d}
+	searchFunc := func(i int) bool {
+		if dst.entries[i].val == entry.val {
+			return dst.entries[i].alg >= entry.alg
+		}
+		return dst.entries[i].val >= entry.val
+	}
+	idx := sort.Search(len(dst.entries), searchFunc)
+	// Not found if idx is after or value at idx is not digest
+	if idx == len(dst.entries) || dst.entries[idx].digest != d {
+		return nil
+	}
+
+	entries := dst.entries
+	copy(entries[idx:], entries[idx+1:])
+	entries = entries[:len(entries)-1]
+	dst.entries = entries
+
+	return nil
+}
+
+// All returns all the digests in the set
+func (dst *Set) All() []Digest {
+	dst.mutex.RLock()
+	defer dst.mutex.RUnlock()
+	retValues := make([]Digest, len(dst.entries))
+	for i := range dst.entries {
+		retValues[i] = dst.entries[i].digest
+	}
+
+	return retValues
+}
+
+// ShortCodeTable returns a map of Digest to unique short codes. The
+// length represents the minimum value, the maximum length may be the
+// entire value of digest if uniqueness cannot be achieved without the
+// full value. This function will attempt to make short codes as short
+// as possible to be unique.
+func ShortCodeTable(dst *Set, length int) map[Digest]string {
+	dst.mutex.RLock()
+	defer dst.mutex.RUnlock()
+	m := make(map[Digest]string, len(dst.entries))
+	l := length
+	resetIdx := 0
+	for i := 0; i < len(dst.entries); i++ {
+		var short string
+		extended := true
+		for extended {
+			extended = false
+			if len(dst.entries[i].val) <= l {
+				short = dst.entries[i].digest.String()
+			} else {
+				short = dst.entries[i].val[:l]
+				for j := i + 1; j < len(dst.entries); j++ {
+					if checkShortMatch(dst.entries[j].alg, dst.entries[j].val, "", short) {
+						if j > resetIdx {
+							resetIdx = j
+						}
+						extended = true
+					} else {
+						break
+					}
+				}
+				if extended {
+					l++
+				}
+			}
+		}
+		m[dst.entries[i].digest] = short
+		if i >= resetIdx {
+			l = length
+		}
+	}
+	return m
+}
+
+type digestEntry struct {
+	alg    Algorithm
+	val    string
+	digest Digest
+}
+
+type digestEntries []*digestEntry
+
+func (d digestEntries) Len() int {
+	return len(d)
+}
+
+func (d digestEntries) Less(i, j int) bool {
+	if d[i].val != d[j].val {
+		return d[i].val < d[j].val
+	}
+	return d[i].alg < d[j].alg
+}
+
+func (d digestEntries) Swap(i, j int) {
+	d[i], d[j] = d[j], d[i]
+}

vendor/github.com/docker/distribution/digest/verifiers.go

@@ -0,0 +1,44 @@
+package digest
+
+import (
+	"hash"
+	"io"
+)
+
+// Verifier presents a general verification interface to be used with message
+// digests and other byte stream verifications. Users instantiate a Verifier
+// from one of the various methods, write the data under test to it then check
+// the result with the Verified method.
+type Verifier interface {
+	io.Writer
+
+	// Verified will return true if the content written to Verifier matches
+	// the digest.
+	Verified() bool
+}
+
+// NewDigestVerifier returns a verifier that compares the written bytes
+// against a passed in digest.
+func NewDigestVerifier(d Digest) (Verifier, error) {
+	if err := d.Validate(); err != nil {
+		return nil, err
+	}
+
+	return hashVerifier{
+		hash:   d.Algorithm().Hash(),
+		digest: d,
+	}, nil
+}
+
+type hashVerifier struct {
+	digest Digest
+	hash   hash.Hash
+}
+
+func (hv hashVerifier) Write(p []byte) (n int, err error) {
+	return hv.hash.Write(p)
+}
+
+func (hv hashVerifier) Verified() bool {
+	return hv.digest == NewDigest(hv.digest.Algorithm(), hv.hash)
+}

vendor/github.com/docker/distribution/reference/reference.go

@@ -0,0 +1,334 @@
+// Package reference provides a general type to represent any way of referencing images within the registry.
+// Its main purpose is to abstract tags and digests (content-addressable hash).
+//
+// Grammar
+//
+// 	reference                       := name [ ":" tag ] [ "@" digest ]
+//	name                            := [hostname '/'] component ['/' component]*
+//	hostname                        := hostcomponent ['.' hostcomponent]* [':' port-number]
+//	hostcomponent                   := /([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])/
+//	port-number                     := /[0-9]+/
+//	component                       := alpha-numeric [separator alpha-numeric]*
+// 	alpha-numeric                   := /[a-z0-9]+/
+//	separator                       := /[_.]|__|[-]*/
+//
+//	tag                             := /[\w][\w.-]{0,127}/
+//
+//	digest                          := digest-algorithm ":" digest-hex
+//	digest-algorithm                := digest-algorithm-component [ digest-algorithm-separator digest-algorithm-component ]
+//	digest-algorithm-separator      := /[+.-_]/
+//	digest-algorithm-component      := /[A-Za-z][A-Za-z0-9]*/
+//	digest-hex                      := /[0-9a-fA-F]{32,}/ ; At least 128 bit digest value
+package reference
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/docker/distribution/digest"
+)
+
+const (
+	// NameTotalLengthMax is the maximum total number of characters in a repository name.
+	NameTotalLengthMax = 255
+)
+
+var (
+	// ErrReferenceInvalidFormat represents an error while trying to parse a string as a reference.
+	ErrReferenceInvalidFormat = errors.New("invalid reference format")
+
+	// ErrTagInvalidFormat represents an error while trying to parse a string as a tag.
+	ErrTagInvalidFormat = errors.New("invalid tag format")
+
+	// ErrDigestInvalidFormat represents an error while trying to parse a string as a tag.
+	ErrDigestInvalidFormat = errors.New("invalid digest format")
+
+	// ErrNameEmpty is returned for empty, invalid repository names.
+	ErrNameEmpty = errors.New("repository name must have at least one component")
+
+	// ErrNameTooLong is returned when a repository name is longer than NameTotalLengthMax.
+	ErrNameTooLong = fmt.Errorf("repository name must not be more than %v characters", NameTotalLengthMax)
+)
+
+// Reference is an opaque object reference identifier that may include
+// modifiers such as a hostname, name, tag, and digest.
+type Reference interface {
+	// String returns the full reference
+	String() string
+}
+
+// Field provides a wrapper type for resolving correct reference types when
+// working with encoding.
+type Field struct {
+	reference Reference
+}
+
+// AsField wraps a reference in a Field for encoding.
+func AsField(reference Reference) Field {
+	return Field{reference}
+}
+
+// Reference unwraps the reference type from the field to
+// return the Reference object. This object should be
+// of the appropriate type to further check for different
+// reference types.
+func (f Field) Reference() Reference {
+	return f.reference
+}
+
+// MarshalText serializes the field to byte text which
+// is the string of the reference.
+func (f Field) MarshalText() (p []byte, err error) {
+	return []byte(f.reference.String()), nil
+}
+
+// UnmarshalText parses text bytes by invoking the
+// reference parser to ensure the appropriately
+// typed reference object is wrapped by field.
+func (f *Field) UnmarshalText(p []byte) error {
+	r, err := Parse(string(p))
+	if err != nil {
+		return err
+	}
+
+	f.reference = r
+	return nil
+}
+
+// Named is an object with a full name
+type Named interface {
+	Reference
+	Name() string
+}
+
+// Tagged is an object which has a tag
+type Tagged interface {
+	Reference
+	Tag() string
+}
+
+// NamedTagged is an object including a name and tag.
+type NamedTagged interface {
+	Named
+	Tag() string
+}
+
+// Digested is an object which has a digest
+// in which it can be referenced by
+type Digested interface {
+	Reference
+	Digest() digest.Digest
+}
+
+// Canonical reference is an object with a fully unique
+// name including a name with hostname and digest
+type Canonical interface {
+	Named
+	Digest() digest.Digest
+}
+
+// SplitHostname splits a named reference into a
+// hostname and name string. If no valid hostname is
+// found, the hostname is empty and the full value
+// is returned as name
+func SplitHostname(named Named) (string, string) {
+	name := named.Name()
+	match := anchoredNameRegexp.FindStringSubmatch(name)
+	if match == nil || len(match) != 3 {
+		return "", name
+	}
+	return match[1], match[2]
+}
+
+// Parse parses s and returns a syntactically valid Reference.
+// If an error was encountered it is returned, along with a nil Reference.
+// NOTE: Parse will not handle short digests.
+func Parse(s string) (Reference, error) {
+	matches := ReferenceRegexp.FindStringSubmatch(s)
+	if matches == nil {
+		if s == "" {
+			return nil, ErrNameEmpty
+		}
+		// TODO(dmcgowan): Provide more specific and helpful error
+		return nil, ErrReferenceInvalidFormat
+	}
+
+	if len(matches[1]) > NameTotalLengthMax {
+		return nil, ErrNameTooLong
+	}
+
+	ref := reference{
+		name: matches[1],
+		tag:  matches[2],
+	}
+	if matches[3] != "" {
+		var err error
+		ref.digest, err = digest.ParseDigest(matches[3])
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	r := getBestReferenceType(ref)
+	if r == nil {
+		return nil, ErrNameEmpty
+	}
+
+	return r, nil
+}
+
+// ParseNamed parses s and returns a syntactically valid reference implementing
+// the Named interface. The reference must have a name, otherwise an error is
+// returned.
+// If an error was encountered it is returned, along with a nil Reference.
+// NOTE: ParseNamed will not handle short digests.
+func ParseNamed(s string) (Named, error) {
+	ref, err := Parse(s)
+	if err != nil {
+		return nil, err
+	}
+	named, isNamed := ref.(Named)
+	if !isNamed {
+		return nil, fmt.Errorf("reference %s has no name", ref.String())
+	}
+	return named, nil
+}
+
+// WithName returns a named object representing the given string. If the input
+// is invalid ErrReferenceInvalidFormat will be returned.
+func WithName(name string) (Named, error) {
+	if len(name) > NameTotalLengthMax {
+		return nil, ErrNameTooLong
+	}
+	if !anchoredNameRegexp.MatchString(name) {
+		return nil, ErrReferenceInvalidFormat
+	}
+	return repository(name), nil
+}
+
+// WithTag combines the name from "name" and the tag from "tag" to form a
+// reference incorporating both the name and the tag.
+func WithTag(name Named, tag string) (NamedTagged, error) {
+	if !anchoredTagRegexp.MatchString(tag) {
+		return nil, ErrTagInvalidFormat
+	}
+	return taggedReference{
+		name: name.Name(),
+		tag:  tag,
+	}, nil
+}
+
+// WithDigest combines the name from "name" and the digest from "digest" to form
+// a reference incorporating both the name and the digest.
+func WithDigest(name Named, digest digest.Digest) (Canonical, error) {
+	if !anchoredDigestRegexp.MatchString(digest.String()) {
+		return nil, ErrDigestInvalidFormat
+	}
+	return canonicalReference{
+		name:   name.Name(),
+		digest: digest,
+	}, nil
+}
+
+func getBestReferenceType(ref reference) Reference {
+	if ref.name == "" {
+		// Allow digest only references
+		if ref.digest != "" {
+			return digestReference(ref.digest)
+		}
+		return nil
+	}
+	if ref.tag == "" {
+		if ref.digest != "" {
+			return canonicalReference{
+				name:   ref.name,
+				digest: ref.digest,
+			}
+		}
+		return repository(ref.name)
+	}
+	if ref.digest == "" {
+		return taggedReference{
+			name: ref.name,
+			tag:  ref.tag,
+		}
+	}
+
+	return ref
+}
+
+type reference struct {
+	name   string
+	tag    string
+	digest digest.Digest
+}
+
+func (r reference) String() string {
+	return r.name + ":" + r.tag + "@" + r.digest.String()
+}
+
+func (r reference) Name() string {
+	return r.name
+}
+
+func (r reference) Tag() string {
+	return r.tag
+}
+
+func (r reference) Digest() digest.Digest {
+	return r.digest
+}
+
+type repository string
+
+func (r repository) String() string {
+	return string(r)
+}
+
+func (r repository) Name() string {
+	return string(r)
+}
+
+type digestReference digest.Digest
+
+func (d digestReference) String() string {
+	return d.String()
+}
+
+func (d digestReference) Digest() digest.Digest {
+	return digest.Digest(d)
+}
+
+type taggedReference struct {
+	name string
+	tag  string
+}
+
+func (t taggedReference) String() string {
+	return t.name + ":" + t.tag
+}
+
+func (t taggedReference) Name() string {
+	return t.name
+}
+
+func (t taggedReference) Tag() string {
+	return t.tag
+}
+
+type canonicalReference struct {
+	name   string
+	digest digest.Digest
+}
+
+func (c canonicalReference) String() string {
+	return c.name + "@" + c.digest.String()
+}
+
+func (c canonicalReference) Name() string {
+	return c.name
+}
+
+func (c canonicalReference) Digest() digest.Digest {
+	return c.digest
+}

vendor/github.com/docker/distribution/reference/regexp.go

@@ -0,0 +1,124 @@
+package reference
+
+import "regexp"
+
+var (
+	// alphaNumericRegexp defines the alpha numeric atom, typically a
+	// component of names. This only allows lower case characters and digits.
+	alphaNumericRegexp = match(`[a-z0-9]+`)
+
+	// separatorRegexp defines the separators allowed to be embedded in name
+	// components. This allow one period, one or two underscore and multiple
+	// dashes.
+	separatorRegexp = match(`(?:[._]|__|[-]*)`)
+
+	// nameComponentRegexp restricts registry path component names to start
+	// with at least one letter or number, with following parts able to be
+	// separated by one period, one or two underscore and multiple dashes.
+	nameComponentRegexp = expression(
+		alphaNumericRegexp,
+		optional(repeated(separatorRegexp, alphaNumericRegexp)))
+
+	// hostnameComponentRegexp restricts the registry hostname component of a
+	// repository name to start with a component as defined by hostnameRegexp
+	// and followed by an optional port.
+	hostnameComponentRegexp = match(`(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])`)
+
+	// hostnameRegexp defines the structure of potential hostname components
+	// that may be part of image names. This is purposely a subset of what is
+	// allowed by DNS to ensure backwards compatibility with Docker image
+	// names.
+	hostnameRegexp = expression(
+		hostnameComponentRegexp,
+		optional(repeated(literal(`.`), hostnameComponentRegexp)),
+		optional(literal(`:`), match(`[0-9]+`)))
+
+	// TagRegexp matches valid tag names. From docker/docker:graph/tags.go.
+	TagRegexp = match(`[\w][\w.-]{0,127}`)
+
+	// anchoredTagRegexp matches valid tag names, anchored at the start and
+	// end of the matched string.
+	anchoredTagRegexp = anchored(TagRegexp)
+
+	// DigestRegexp matches valid digests.
+	DigestRegexp = match(`[A-Za-z][A-Za-z0-9]*(?:[-_+.][A-Za-z][A-Za-z0-9]*)*[:][[:xdigit:]]{32,}`)
+
+	// anchoredDigestRegexp matches valid digests, anchored at the start and
+	// end of the matched string.
+	anchoredDigestRegexp = anchored(DigestRegexp)
+
+	// NameRegexp is the format for the name component of references. The
+	// regexp has capturing groups for the hostname and name part omitting
+	// the separating forward slash from either.
+	NameRegexp = expression(
+		optional(hostnameRegexp, literal(`/`)),
+		nameComponentRegexp,
+		optional(repeated(literal(`/`), nameComponentRegexp)))
+
+	// anchoredNameRegexp is used to parse a name value, capturing the
+	// hostname and trailing components.
+	anchoredNameRegexp = anchored(
+		optional(capture(hostnameRegexp), literal(`/`)),
+		capture(nameComponentRegexp,
+			optional(repeated(literal(`/`), nameComponentRegexp))))
+
+	// ReferenceRegexp is the full supported format of a reference. The regexp
+	// is anchored and has capturing groups for name, tag, and digest
+	// components.
+	ReferenceRegexp = anchored(capture(NameRegexp),
+		optional(literal(":"), capture(TagRegexp)),
+		optional(literal("@"), capture(DigestRegexp)))
+)
+
+// match compiles the string to a regular expression.
+var match = regexp.MustCompile
+
+// literal compiles s into a literal regular expression, escaping any regexp
+// reserved characters.
+func literal(s string) *regexp.Regexp {
+	re := match(regexp.QuoteMeta(s))
+
+	if _, complete := re.LiteralPrefix(); !complete {
+		panic("must be a literal")
+	}
+
+	return re
+}
+
+// expression defines a full expression, where each regular expression must
+// follow the previous.
+func expression(res ...*regexp.Regexp) *regexp.Regexp {
+	var s string
+	for _, re := range res {
+		s += re.String()
+	}
+
+	return match(s)
+}
+
+// optional wraps the expression in a non-capturing group and makes the
+// production optional.
+func optional(res ...*regexp.Regexp) *regexp.Regexp {
+	return match(group(expression(res...)).String() + `?`)
+}
+
+// repeated wraps the regexp in a non-capturing group to get one or more
+// matches.
+func repeated(res ...*regexp.Regexp) *regexp.Regexp {
+	return match(group(expression(res...)).String() + `+`)
+}
+
+// group wraps the regexp in a non-capturing group.
+func group(res ...*regexp.Regexp) *regexp.Regexp {
+	return match(`(?:` + expression(res...).String() + `)`)
+}
+
+// capture wraps the expression in a capturing group.
+func capture(res ...*regexp.Regexp) *regexp.Regexp {
+	return match(`(` + expression(res...).String() + `)`)
+}
+
+// anchored anchors the regular expression by adding start and end delimiters.
+func anchored(res ...*regexp.Regexp) *regexp.Regexp {
+	return match(`^` + expression(res...).String() + `$`)
+}

vendor/github.com/docker/docker/LICENSE

@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2013-2015 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/docker/docker/NOTICE

@@ -0,0 +1,19 @@
+Docker
+Copyright 2012-2015 Docker, Inc.
+
+This product includes software developed at Docker, Inc. (https://www.docker.com).
+
+This product contains software (https://github.com/kr/pty) developed
+by Keith Rarick, licensed under the MIT License.
+
+The following is courtesy of our legal counsel:
+
+
+Use and transfer of Docker may be subject to certain restrictions by the
+United States and other governments.
+It is your responsibility to ensure that your use and/or transfer does not
+violate applicable laws.
+
+For more information, please see https://www.bis.doc.gov
+
+See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

vendor/github.com/docker/docker/pkg/mount/flags.go

@@ -0,0 +1,69 @@
+package mount
+
+import (
+	"strings"
+)
+
+// Parse fstab type mount options into mount() flags
+// and device specific data
+func parseOptions(options string) (int, string) {
+	var (
+		flag int
+		data []string
+	)
+
+	flags := map[string]struct {
+		clear bool
+		flag  int
+	}{
+		"defaults":      {false, 0},
+		"ro":            {false, RDONLY},
+		"rw":            {true, RDONLY},
+		"suid":          {true, NOSUID},
+		"nosuid":        {false, NOSUID},
+		"dev":           {true, NODEV},
+		"nodev":         {false, NODEV},
+		"exec":          {true, NOEXEC},
+		"noexec":        {false, NOEXEC},
+		"sync":          {false, SYNCHRONOUS},
+		"async":         {true, SYNCHRONOUS},
+		"dirsync":       {false, DIRSYNC},
+		"remount":       {false, REMOUNT},
+		"mand":          {false, MANDLOCK},
+		"nomand":        {true, MANDLOCK},
+		"atime":         {true, NOATIME},
+		"noatime":       {false, NOATIME},
+		"diratime":      {true, NODIRATIME},
+		"nodiratime":    {false, NODIRATIME},
+		"bind":          {false, BIND},
+		"rbind":         {false, RBIND},
+		"unbindable":    {false, UNBINDABLE},
+		"runbindable":   {false, RUNBINDABLE},
+		"private":       {false, PRIVATE},
+		"rprivate":      {false, RPRIVATE},
+		"shared":        {false, SHARED},
+		"rshared":       {false, RSHARED},
+		"slave":         {false, SLAVE},
+		"rslave":        {false, RSLAVE},
+		"relatime":      {false, RELATIME},
+		"norelatime":    {true, RELATIME},
+		"strictatime":   {false, STRICTATIME},
+		"nostrictatime": {true, STRICTATIME},
+	}
+
+	for _, o := range strings.Split(options, ",") {
+		// If the option does not exist in the flags table or the flag
+		// is not supported on the platform,
+		// then it is a data value for a specific fs type
+		if f, exists := flags[o]; exists && f.flag != 0 {
+			if f.clear {
+				flag &= ^f.flag
+			} else {
+				flag |= f.flag
+			}
+		} else {
+			data = append(data, o)
+		}
+	}
+	return flag, strings.Join(data, ",")
+}

vendor/github.com/docker/docker/pkg/mount/flags_freebsd.go

@@ -0,0 +1,48 @@
+// +build freebsd,cgo
+
+package mount
+
+/*
+#include <sys/mount.h>
+*/
+import "C"
+
+const (
+	// RDONLY will mount the filesystem as read-only.
+	RDONLY = C.MNT_RDONLY
+
+	// NOSUID will not allow set-user-identifier or set-group-identifier bits to
+	// take effect.
+	NOSUID = C.MNT_NOSUID
+
+	// NOEXEC will not allow execution of any binaries on the mounted file system.
+	NOEXEC = C.MNT_NOEXEC
+
+	// SYNCHRONOUS will allow any I/O to the file system to be done synchronously.
+	SYNCHRONOUS = C.MNT_SYNCHRONOUS
+
+	// NOATIME will not update the file access time when reading from a file.
+	NOATIME = C.MNT_NOATIME
+)
+
+// These flags are unsupported.
+const (
+	BIND        = 0
+	DIRSYNC     = 0
+	MANDLOCK    = 0
+	NODEV       = 0
+	NODIRATIME  = 0
+	UNBINDABLE  = 0
+	RUNBINDABLE = 0
+	PRIVATE     = 0
+	RPRIVATE    = 0
+	SHARED      = 0
+	RSHARED     = 0
+	SLAVE       = 0
+	RSLAVE      = 0
+	RBIND       = 0
+	RELATIVE    = 0
+	RELATIME    = 0
+	REMOUNT     = 0
+	STRICTATIME = 0
+)

vendor/github.com/docker/docker/pkg/mount/flags_linux.go

@@ -0,0 +1,85 @@
+package mount
+
+import (
+	"syscall"
+)
+
+const (
+	// RDONLY will mount the file system read-only.
+	RDONLY = syscall.MS_RDONLY
+
+	// NOSUID will not allow set-user-identifier or set-group-identifier bits to
+	// take effect.
+	NOSUID = syscall.MS_NOSUID
+
+	// NODEV will not interpret character or block special devices on the file
+	// system.
+	NODEV = syscall.MS_NODEV
+
+	// NOEXEC will not allow execution of any binaries on the mounted file system.
+	NOEXEC = syscall.MS_NOEXEC
+
+	// SYNCHRONOUS will allow I/O to the file system to be done synchronously.
+	SYNCHRONOUS = syscall.MS_SYNCHRONOUS
+
+	// DIRSYNC will force all directory updates within the file system to be done
+	// synchronously. This affects the following system calls: creat, link,
+	// unlink, symlink, mkdir, rmdir, mknod and rename.
+	DIRSYNC = syscall.MS_DIRSYNC
+
+	// REMOUNT will attempt to remount an already-mounted file system. This is
+	// commonly used to change the mount flags for a file system, especially to
+	// make a readonly file system writeable. It does not change device or mount
+	// point.
+	REMOUNT = syscall.MS_REMOUNT
+
+	// MANDLOCK will force mandatory locks on a filesystem.
+	MANDLOCK = syscall.MS_MANDLOCK
+
+	// NOATIME will not update the file access time when reading from a file.
+	NOATIME = syscall.MS_NOATIME
+
+	// NODIRATIME will not update the directory access time.
+	NODIRATIME = syscall.MS_NODIRATIME
+
+	// BIND remounts a subtree somewhere else.
+	BIND = syscall.MS_BIND
+
+	// RBIND remounts a subtree and all possible submounts somewhere else.
+	RBIND = syscall.MS_BIND | syscall.MS_REC
+
+	// UNBINDABLE creates a mount which cannot be cloned through a bind operation.
+	UNBINDABLE = syscall.MS_UNBINDABLE
+
+	// RUNBINDABLE marks the entire mount tree as UNBINDABLE.
+	RUNBINDABLE = syscall.MS_UNBINDABLE | syscall.MS_REC
+
+	// PRIVATE creates a mount which carries no propagation abilities.
+	PRIVATE = syscall.MS_PRIVATE
+
+	// RPRIVATE marks the entire mount tree as PRIVATE.
+	RPRIVATE = syscall.MS_PRIVATE | syscall.MS_REC
+
+	// SLAVE creates a mount which receives propagation from its master, but not
+	// vice versa.
+	SLAVE = syscall.MS_SLAVE
+
+	// RSLAVE marks the entire mount tree as SLAVE.
+	RSLAVE = syscall.MS_SLAVE | syscall.MS_REC
+
+	// SHARED creates a mount which provides the ability to create mirrors of
+	// that mount such that mounts and unmounts within any of the mirrors
+	// propagate to the other mirrors.
+	SHARED = syscall.MS_SHARED
+
+	// RSHARED marks the entire mount tree as SHARED.
+	RSHARED = syscall.MS_SHARED | syscall.MS_REC
+
+	// RELATIME updates inode access times relative to modify or change time.
+	RELATIME = syscall.MS_RELATIME
+
+	// STRICTATIME allows to explicitly request full atime updates.  This makes
+	// it possible for the kernel to default to relatime or noatime but still
+	// allow userspace to override it.
+	STRICTATIME = syscall.MS_STRICTATIME
+)

vendor/github.com/docker/docker/pkg/mount/flags_unsupported.go

@@ -0,0 +1,30 @@
+// +build !linux,!freebsd freebsd,!cgo
+
+package mount
+
+// These flags are unsupported.
+const (
+	BIND        = 0
+	DIRSYNC     = 0
+	MANDLOCK    = 0
+	NOATIME     = 0
+	NODEV       = 0
+	NODIRATIME  = 0
+	NOEXEC      = 0
+	NOSUID      = 0
+	UNBINDABLE  = 0
+	RUNBINDABLE = 0
+	PRIVATE     = 0
+	RPRIVATE    = 0
+	SHARED      = 0
+	RSHARED     = 0
+	SLAVE       = 0
+	RSLAVE      = 0
+	RBIND       = 0
+	RELATIME    = 0
+	RELATIVE    = 0
+	REMOUNT     = 0
+	STRICTATIME = 0
+	SYNCHRONOUS = 0
+	RDONLY      = 0
+)

vendor/github.com/docker/docker/pkg/mount/mount.go

@@ -0,0 +1,74 @@
+package mount
+
+import (
+	"time"
+)
+
+// GetMounts retrieves a list of mounts for the current running process.
+func GetMounts() ([]*Info, error) {
+	return parseMountTable()
+}
+
+// Mounted looks at /proc/self/mountinfo to determine of the specified
+// mountpoint has been mounted
+func Mounted(mountpoint string) (bool, error) {
+	entries, err := parseMountTable()
+	if err != nil {
+		return false, err
+	}
+
+	// Search the table for the mountpoint
+	for _, e := range entries {
+		if e.Mountpoint == mountpoint {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+// Mount will mount filesystem according to the specified configuration, on the
+// condition that the target path is *not* already mounted. Options must be
+// specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See
+// flags.go for supported option flags.
+func Mount(device, target, mType, options string) error {
+	flag, _ := parseOptions(options)
+	if flag&REMOUNT != REMOUNT {
+		if mounted, err := Mounted(target); err != nil || mounted {
+			return err
+		}
+	}
+	return ForceMount(device, target, mType, options)
+}
+
+// ForceMount will mount a filesystem according to the specified configuration,
+// *regardless* if the target path is not already mounted. Options must be
+// specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See
+// flags.go for supported option flags.
+func ForceMount(device, target, mType, options string) error {
+	flag, data := parseOptions(options)
+	if err := mount(device, target, mType, uintptr(flag), data); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Unmount will unmount the target filesystem, so long as it is mounted.
+func Unmount(target string) error {
+	if mounted, err := Mounted(target); err != nil || !mounted {
+		return err
+	}
+	return ForceUnmount(target)
+}
+
+// ForceUnmount will force an unmount of the target filesystem, regardless if
+// it is mounted or not.
+func ForceUnmount(target string) (err error) {
+	// Simple retry logic for unmount
+	for i := 0; i < 10; i++ {
+		if err = unmount(target, 0); err == nil {
+			return nil
+		}
+		time.Sleep(100 * time.Millisecond)
+	}
+	return
+}

vendor/github.com/docker/docker/pkg/mount/mounter_freebsd.go

@@ -0,0 +1,59 @@
+package mount
+
+/*
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/_iovec.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+*/
+import "C"
+
+import (
+	"fmt"
+	"strings"
+	"syscall"
+	"unsafe"
+)
+
+func allocateIOVecs(options []string) []C.struct_iovec {
+	out := make([]C.struct_iovec, len(options))
+	for i, option := range options {
+		out[i].iov_base = unsafe.Pointer(C.CString(option))
+		out[i].iov_len = C.size_t(len(option) + 1)
+	}
+	return out
+}
+
+func mount(device, target, mType string, flag uintptr, data string) error {
+	isNullFS := false
+
+	xs := strings.Split(data, ",")
+	for _, x := range xs {
+		if x == "bind" {
+			isNullFS = true
+		}
+	}
+
+	options := []string{"fspath", target}
+	if isNullFS {
+		options = append(options, "fstype", "nullfs", "target", device)
+	} else {
+		options = append(options, "fstype", mType, "from", device)
+	}
+	rawOptions := allocateIOVecs(options)
+	for _, rawOption := range rawOptions {
+		defer C.free(rawOption.iov_base)
+	}
+
+	if errno := C.nmount(&rawOptions[0], C.uint(len(options)), C.int(flag)); errno != 0 {
+		reason := C.GoString(C.strerror(*C.__error()))
+		return fmt.Errorf("Failed to call nmount: %s", reason)
+	}
+	return nil
+}
+
+func unmount(target string, flag int) error {
+	return syscall.Unmount(target, flag)
+}

vendor/github.com/docker/docker/pkg/mount/mounter_linux.go

@@ -0,0 +1,21 @@
+package mount
+
+import (
+	"syscall"
+)
+
+func mount(device, target, mType string, flag uintptr, data string) error {
+	if err := syscall.Mount(device, target, mType, flag, data); err != nil {
+		return err
+	}
+
+	// If we have a bind mount or remount, remount...
+	if flag&syscall.MS_BIND == syscall.MS_BIND && flag&syscall.MS_RDONLY == syscall.MS_RDONLY {
+		return syscall.Mount(device, target, mType, flag|syscall.MS_REMOUNT, data)
+	}
+	return nil
+}
+
+func unmount(target string, flag int) error {
+	return syscall.Unmount(target, flag)
+}

vendor/github.com/docker/docker/pkg/mount/mounter_unsupported.go

@@ -0,0 +1,11 @@
+// +build !linux,!freebsd freebsd,!cgo
+
+package mount
+
+func mount(device, target, mType string, flag uintptr, data string) error {
+	panic("Not implemented")
+}
+
+func unmount(target string, flag int) error {
+	panic("Not implemented")
+}

vendor/github.com/docker/docker/pkg/mount/mountinfo.go

@@ -0,0 +1,40 @@
+package mount
+
+// Info reveals information about a particular mounted filesystem. This
+// struct is populated from the content in the /proc/<pid>/mountinfo file.
+type Info struct {
+	// ID is a unique identifier of the mount (may be reused after umount).
+	ID int
+
+	// Parent indicates the ID of the mount parent (or of self for the top of the
+	// mount tree).
+	Parent int
+
+	// Major indicates one half of the device ID which identifies the device class.
+	Major int
+
+	// Minor indicates one half of the device ID which identifies a specific
+	// instance of device.
+	Minor int
+
+	// Root of the mount within the filesystem.
+	Root string
+
+	// Mountpoint indicates the mount point relative to the process's root.
+	Mountpoint string
+
+	// Opts represents mount-specific options.
+	Opts string
+
+	// Optional represents optional fields.
+	Optional string
+
+	// Fstype indicates the type of filesystem, such as EXT3.
+	Fstype string
+
+	// Source indicates filesystem specific information or "none".
+	Source string
+
+	// VfsOpts represents per super block options.
+	VfsOpts string
+}

vendor/github.com/docker/docker/pkg/mount/mountinfo_freebsd.go

@@ -0,0 +1,41 @@
+package mount
+
+/*
+#include <sys/param.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+*/
+import "C"
+
+import (
+	"fmt"
+	"reflect"
+	"unsafe"
+)
+
+// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
+// bind mounts.
+func parseMountTable() ([]*Info, error) {
+	var rawEntries *C.struct_statfs
+
+	count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT))
+	if count == 0 {
+		return nil, fmt.Errorf("Failed to call getmntinfo")
+	}
+
+	var entries []C.struct_statfs
+	header := (*reflect.SliceHeader)(unsafe.Pointer(&entries))
+	header.Cap = count
+	header.Len = count
+	header.Data = uintptr(unsafe.Pointer(rawEntries))
+
+	var out []*Info
+	for _, entry := range entries {
+		var mountinfo Info
+		mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0])
+		mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
+		mountinfo.Fstype = C.GoString(&entry.f_fstypename[0])
+		out = append(out, &mountinfo)
+	}
+	return out, nil
+}

vendor/github.com/docker/docker/pkg/mount/mountinfo_linux.go

@@ -0,0 +1,95 @@
+// +build linux
+
+package mount
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+)
+
+const (
+	/* 36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
+	   (1)(2)(3)   (4)   (5)      (6)      (7)   (8) (9)   (10)         (11)
+
+	   (1) mount ID:  unique identifier of the mount (may be reused after umount)
+	   (2) parent ID:  ID of parent (or of self for the top of the mount tree)
+	   (3) major:minor:  value of st_dev for files on filesystem
+	   (4) root:  root of the mount within the filesystem
+	   (5) mount point:  mount point relative to the process's root
+	   (6) mount options:  per mount options
+	   (7) optional fields:  zero or more fields of the form "tag[:value]"
+	   (8) separator:  marks the end of the optional fields
+	   (9) filesystem type:  name of filesystem of the form "type[.subtype]"
+	   (10) mount source:  filesystem specific information or "none"
+	   (11) super options:  per super block options*/
+	mountinfoFormat = "%d %d %d:%d %s %s %s %s"
+)
+
+// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
+// bind mounts
+func parseMountTable() ([]*Info, error) {
+	f, err := os.Open("/proc/self/mountinfo")
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return parseInfoFile(f)
+}
+
+func parseInfoFile(r io.Reader) ([]*Info, error) {
+	var (
+		s   = bufio.NewScanner(r)
+		out = []*Info{}
+	)
+
+	for s.Scan() {
+		if err := s.Err(); err != nil {
+			return nil, err
+		}
+
+		var (
+			p              = &Info{}
+			text           = s.Text()
+			optionalFields string
+		)
+
+		if _, err := fmt.Sscanf(text, mountinfoFormat,
+			&p.ID, &p.Parent, &p.Major, &p.Minor,
+			&p.Root, &p.Mountpoint, &p.Opts, &optionalFields); err != nil {
+			return nil, fmt.Errorf("Scanning '%s' failed: %s", text, err)
+		}
+		// Safe as mountinfo encodes mountpoints with spaces as \040.
+		index := strings.Index(text, " - ")
+		postSeparatorFields := strings.Fields(text[index+3:])
+		if len(postSeparatorFields) < 3 {
+			return nil, fmt.Errorf("Error found less than 3 fields post '-' in %q", text)
+		}
+
+		if optionalFields != "-" {
+			p.Optional = optionalFields
+		}
+
+		p.Fstype = postSeparatorFields[0]
+		p.Source = postSeparatorFields[1]
+		p.VfsOpts = strings.Join(postSeparatorFields[2:], " ")
+		out = append(out, p)
+	}
+	return out, nil
+}
+
+// PidMountInfo collects the mounts for a specific process ID. If the process
+// ID is unknown, it is better to use `GetMounts` which will inspect
+// "/proc/self/mountinfo" instead.
+func PidMountInfo(pid int) ([]*Info, error) {
+	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return parseInfoFile(f)
+}

vendor/github.com/docker/docker/pkg/mount/mountinfo_unsupported.go

@@ -0,0 +1,12 @@
+// +build !linux,!freebsd freebsd,!cgo
+
+package mount
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func parseMountTable() ([]*Info, error) {
+	return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}

vendor/github.com/docker/docker/pkg/mount/sharedsubtree_linux.go

@@ -0,0 +1,70 @@
+// +build linux
+
+package mount
+
+// MakeShared ensures a mounted filesystem has the SHARED mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeShared(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "shared")
+}
+
+// MakeRShared ensures a mounted filesystem has the RSHARED mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeRShared(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "rshared")
+}
+
+// MakePrivate ensures a mounted filesystem has the PRIVATE mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakePrivate(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "private")
+}
+
+// MakeRPrivate ensures a mounted filesystem has the RPRIVATE mount option
+// enabled. See the supported options in flags.go for further reference.
+func MakeRPrivate(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "rprivate")
+}
+
+// MakeSlave ensures a mounted filesystem has the SLAVE mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeSlave(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "slave")
+}
+
+// MakeRSlave ensures a mounted filesystem has the RSLAVE mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeRSlave(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "rslave")
+}
+
+// MakeUnbindable ensures a mounted filesystem has the UNBINDABLE mount option
+// enabled. See the supported options in flags.go for further reference.
+func MakeUnbindable(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "unbindable")
+}
+
+// MakeRUnbindable ensures a mounted filesystem has the RUNBINDABLE mount
+// option enabled. See the supported options in flags.go for further reference.
+func MakeRUnbindable(mountPoint string) error {
+	return ensureMountedAs(mountPoint, "runbindable")
+}
+
+func ensureMountedAs(mountPoint, options string) error {
+	mounted, err := Mounted(mountPoint)
+	if err != nil {
+		return err
+	}
+
+	if !mounted {
+		if err := Mount(mountPoint, mountPoint, "none", "bind,rw"); err != nil {
+			return err
+		}
+	}
+	mounted, err = Mounted(mountPoint)
+	if err != nil {
+		return err
+	}
+
+	return ForceMount("", mountPoint, "none", options)
+}

vendor/github.com/docker/engine-api/LICENSE

@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2015-2016 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/docker/engine-api/types/auth.go

@@ -0,0 +1,22 @@
+package types
+
+// AuthConfig contains authorization information for connecting to a Registry
+type AuthConfig struct {
+	Username string `json:"username,omitempty"`
+	Password string `json:"password,omitempty"`
+	Auth     string `json:"auth,omitempty"`
+
+	// Email is an optional value associated with the username.
+	// This field is deprecated and will be removed in a later
+	// version of docker.
+	Email string `json:"email,omitempty"`
+
+	ServerAddress string `json:"serveraddress,omitempty"`
+
+	// IdentityToken is used to authenticate the user and get
+	// an access token for the registry.
+	IdentityToken string `json:"identitytoken,omitempty"`
+
+	// RegistryToken is a bearer token to be sent to a registry
+	RegistryToken string `json:"registrytoken,omitempty"`
+}

vendor/github.com/docker/engine-api/types/blkiodev/blkio.go

@@ -0,0 +1,23 @@
+package blkiodev
+
+import "fmt"
+
+// WeightDevice is a structure that holds device:weight pair
+type WeightDevice struct {
+	Path   string
+	Weight uint16
+}
+
+func (w *WeightDevice) String() string {
+	return fmt.Sprintf("%s:%d", w.Path, w.Weight)
+}
+
+// ThrottleDevice is a structure that holds device:rate_per_second pair
+type ThrottleDevice struct {
+	Path string
+	Rate uint64
+}
+
+func (t *ThrottleDevice) String() string {
+	return fmt.Sprintf("%s:%d", t.Path, t.Rate)
+}

vendor/github.com/docker/engine-api/types/client.go

@@ -0,0 +1,231 @@
+package types
+
+import (
+	"bufio"
+	"io"
+	"net"
+
+	"github.com/docker/engine-api/types/container"
+	"github.com/docker/engine-api/types/filters"
+	"github.com/docker/go-units"
+)
+
+// ContainerAttachOptions holds parameters to attach to a container.
+type ContainerAttachOptions struct {
+	Stream     bool
+	Stdin      bool
+	Stdout     bool
+	Stderr     bool
+	DetachKeys string
+}
+
+// ContainerCommitOptions holds parameters to commit changes into a container.
+type ContainerCommitOptions struct {
+	Reference string
+	Comment   string
+	Author    string
+	Changes   []string
+	Pause     bool
+	Config    *container.Config
+}
+
+// ContainerExecInspect holds information returned by exec inspect.
+type ContainerExecInspect struct {
+	ExecID      string
+	ContainerID string
+	Running     bool
+	ExitCode    int
+}
+
+// ContainerListOptions holds parameters to list containers with.
+type ContainerListOptions struct {
+	Quiet  bool
+	Size   bool
+	All    bool
+	Latest bool
+	Since  string
+	Before string
+	Limit  int
+	Filter filters.Args
+}
+
+// ContainerLogsOptions holds parameters to filter logs with.
+type ContainerLogsOptions struct {
+	ShowStdout bool
+	ShowStderr bool
+	Since      string
+	Timestamps bool
+	Follow     bool
+	Tail       string
+}
+
+// ContainerRemoveOptions holds parameters to remove containers.
+type ContainerRemoveOptions struct {
+	RemoveVolumes bool
+	RemoveLinks   bool
+	Force         bool
+}
+
+// CopyToContainerOptions holds information
+// about files to copy into a container
+type CopyToContainerOptions struct {
+	AllowOverwriteDirWithFile bool
+}
+
+// EventsOptions hold parameters to filter events with.
+type EventsOptions struct {
+	Since   string
+	Until   string
+	Filters filters.Args
+}
+
+// NetworkListOptions holds parameters to filter the list of networks with.
+type NetworkListOptions struct {
+	Filters filters.Args
+}
+
+// HijackedResponse holds connection information for a hijacked request.
+type HijackedResponse struct {
+	Conn   net.Conn
+	Reader *bufio.Reader
+}
+
+// Close closes the hijacked connection and reader.
+func (h *HijackedResponse) Close() {
+	h.Conn.Close()
+}
+
+// CloseWriter is an interface that implements structs
+// that close input streams to prevent from writing.
+type CloseWriter interface {
+	CloseWrite() error
+}
+
+// CloseWrite closes a readWriter for writing.
+func (h *HijackedResponse) CloseWrite() error {
+	if conn, ok := h.Conn.(CloseWriter); ok {
+		return conn.CloseWrite()
+	}
+	return nil
+}
+
+// ImageBuildOptions holds the information
+// necessary to build images.
+type ImageBuildOptions struct {
+	Tags           []string
+	SuppressOutput bool
+	RemoteContext  string
+	NoCache        bool
+	Remove         bool
+	ForceRemove    bool
+	PullParent     bool
+	Isolation      container.Isolation
+	CPUSetCPUs     string
+	CPUSetMems     string
+	CPUShares      int64
+	CPUQuota       int64
+	CPUPeriod      int64
+	Memory         int64
+	MemorySwap     int64
+	CgroupParent   string
+	ShmSize        int64
+	Dockerfile     string
+	Ulimits        []*units.Ulimit
+	BuildArgs      map[string]string
+	AuthConfigs    map[string]AuthConfig
+	Context        io.Reader
+	Labels         map[string]string
+}
+
+// ImageBuildResponse holds information
+// returned by a server after building
+// an image.
+type ImageBuildResponse struct {
+	Body   io.ReadCloser
+	OSType string
+}
+
+// ImageCreateOptions holds information to create images.
+type ImageCreateOptions struct {
+	RegistryAuth string // RegistryAuth is the base64 encoded credentials for the registry
+}
+
+// ImageImportSource holds source information for ImageImport
+type ImageImportSource struct {
+	Source     io.Reader // Source is the data to send to the server to create this image from (mutually exclusive with SourceName)
+	SourceName string    // SourceName is the name of the image to pull (mutually exclusive with Source)
+}
+
+// ImageImportOptions holds information to import images from the client host.
+type ImageImportOptions struct {
+	Tag     string   // Tag is the name to tag this image with. This attribute is deprecated.
+	Message string   // Message is the message to tag the image with
+	Changes []string // Changes are the raw changes to apply to this image
+}
+
+// ImageListOptions holds parameters to filter the list of images with.
+type ImageListOptions struct {
+	MatchName string
+	All       bool
+	Filters   filters.Args
+}
+
+// ImageLoadResponse returns information to the client about a load process.
+type ImageLoadResponse struct {
+	Body io.ReadCloser
+	JSON bool
+}
+
+// ImagePullOptions holds information to pull images.
+type ImagePullOptions struct {
+	RegistryAuth  string // RegistryAuth is the base64 encoded credentials for the registry
+	PrivilegeFunc RequestPrivilegeFunc
+}
+
+// RequestPrivilegeFunc is a function interface that
+// clients can supply to retry operations after
+// getting an authorization error.
+// This function returns the registry authentication
+// header value in base 64 format, or an error
+// if the privilege request fails.
+type RequestPrivilegeFunc func() (string, error)
+
+//ImagePushOptions holds information to push images.
+type ImagePushOptions ImagePullOptions
+
+// ImageRemoveOptions holds parameters to remove images.
+type ImageRemoveOptions struct {
+	Force         bool
+	PruneChildren bool
+}
+
+// ImageSearchOptions holds parameters to search images with.
+type ImageSearchOptions struct {
+	RegistryAuth  string
+	PrivilegeFunc RequestPrivilegeFunc
+}
+
+// ImageTagOptions holds parameters to tag an image
+type ImageTagOptions struct {
+	Force bool
+}
+
+// ResizeOptions holds parameters to resize a tty.
+// It can be used to resize container ttys and
+// exec process ttys too.
+type ResizeOptions struct {
+	Height int
+	Width  int
+}
+
+// VersionResponse holds version information for the client and the server
+type VersionResponse struct {
+	Client *Version
+	Server *Version
+}
+
+// ServerOK returns true when the client could connect to the docker server
+// and parse the information received. It returns false otherwise.
+func (v VersionResponse) ServerOK() bool {
+	return v.Server != nil
+}

vendor/github.com/docker/engine-api/types/configs.go

@@ -0,0 +1,53 @@
+package types
+
+import (
+	"github.com/docker/engine-api/types/container"
+	"github.com/docker/engine-api/types/network"
+)
+
+// configs holds structs used for internal communication between the
+// frontend (such as an http server) and the backend (such as the
+// docker daemon).
+
+// ContainerCreateConfig is the parameter set to ContainerCreate()
+type ContainerCreateConfig struct {
+	Name             string
+	Config           *container.Config
+	HostConfig       *container.HostConfig
+	NetworkingConfig *network.NetworkingConfig
+	AdjustCPUShares  bool
+}
+
+// ContainerRmConfig holds arguments for the container remove
+// operation. This struct is used to tell the backend what operations
+// to perform.
+type ContainerRmConfig struct {
+	ForceRemove, RemoveVolume, RemoveLink bool
+}
+
+// ContainerCommitConfig contains build configs for commit operation,
+// and is used when making a commit with the current state of the container.
+type ContainerCommitConfig struct {
+	Pause   bool
+	Repo    string
+	Tag     string
+	Author  string
+	Comment string
+	// merge container config into commit config before commit
+	MergeConfigs bool
+	Config       *container.Config
+}
+
+// ExecConfig is a small subset of the Config struct that holds the configuration
+// for the exec feature of docker.
+type ExecConfig struct {
+	User         string   // User that will run the command
+	Privileged   bool     // Is the container in privileged mode
+	Tty          bool     // Attach standard streams to a tty.
+	AttachStdin  bool     // Attach the standard input, makes possible user interaction
+	AttachStderr bool     // Attach the standard output
+	AttachStdout bool     // Attach the standard error
+	Detach       bool     // Execute in detach mode
+	DetachKeys   string   // Escape keys for detach
+	Cmd          []string // Execution commands and args
+}

vendor/github.com/docker/engine-api/types/container/config.go

@@ -0,0 +1,37 @@
+package container
+
+import (
+	"github.com/docker/engine-api/types/strslice"
+	"github.com/docker/go-connections/nat"
+)
+
+// Config contains the configuration data about a container.
+// It should hold only portable information about the container.
+// Here, "portable" means "independent from the host we are running on".
+// Non-portable information *should* appear in HostConfig.
+// All fields added to this struct must be marked `omitempty` to keep getting
+// predictable hashes from the old `v1Compatibility` configuration.
+type Config struct {
+	Hostname        string                // Hostname
+	Domainname      string                // Domainname
+	User            string                // User that will run the command(s) inside the container
+	AttachStdin     bool                  // Attach the standard input, makes possible user interaction
+	AttachStdout    bool                  // Attach the standard output
+	AttachStderr    bool                  // Attach the standard error
+	ExposedPorts    map[nat.Port]struct{} `json:",omitempty"` // List of exposed ports
+	Tty             bool                  // Attach standard streams to a tty, including stdin if it is not closed.
+	OpenStdin       bool                  // Open stdin
+	StdinOnce       bool                  // If true, close stdin after the 1 attached client disconnects.
+	Env             []string              // List of environment variable to set in the container
+	Cmd             strslice.StrSlice     // Command to run when starting the container
+	ArgsEscaped     bool                  `json:",omitempty"` // True if command is already escaped (Windows specific)
+	Image           string                // Name of the image as it was passed by the operator (eg. could be symbolic)
+	Volumes         map[string]struct{}   // List of volumes (mounts) used for the container
+	WorkingDir      string                // Current directory (PWD) in the command will be launched
+	Entrypoint      strslice.StrSlice     // Entrypoint to run when starting the container
+	NetworkDisabled bool                  `json:",omitempty"` // Is network disabled
+	MacAddress      string                `json:",omitempty"` // Mac Address of the container
+	OnBuild         []string              // ONBUILD metadata that were defined on the image Dockerfile
+	Labels          map[string]string     // List of labels set to this container
+	StopSignal      string                `json:",omitempty"` // Signal to stop a container
+}

vendor/github.com/docker/engine-api/types/container/host_config.go

@@ -0,0 +1,301 @@
+package container
+
+import (
+	"strings"
+
+	"github.com/docker/engine-api/types/blkiodev"
+	"github.com/docker/engine-api/types/strslice"
+	"github.com/docker/go-connections/nat"
+	"github.com/docker/go-units"
+)
+
+// NetworkMode represents the container network stack.
+type NetworkMode string
+
+// Isolation represents the isolation technology of a container. The supported
+// values are platform specific
+type Isolation string
+
+// IsDefault indicates the default isolation technology of a container. On Linux this
+// is the native driver. On Windows, this is a Windows Server Container.
+func (i Isolation) IsDefault() bool {
+	return strings.ToLower(string(i)) == "default" || string(i) == ""
+}
+
+// IpcMode represents the container ipc stack.
+type IpcMode string
+
+// IsPrivate indicates whether the container uses its private ipc stack.
+func (n IpcMode) IsPrivate() bool {
+	return !(n.IsHost() || n.IsContainer())
+}
+
+// IsHost indicates whether the container uses the host's ipc stack.
+func (n IpcMode) IsHost() bool {
+	return n == "host"
+}
+
+// IsContainer indicates whether the container uses a container's ipc stack.
+func (n IpcMode) IsContainer() bool {
+	parts := strings.SplitN(string(n), ":", 2)
+	return len(parts) > 1 && parts[0] == "container"
+}
+
+// Valid indicates whether the ipc stack is valid.
+func (n IpcMode) Valid() bool {
+	parts := strings.Split(string(n), ":")
+	switch mode := parts[0]; mode {
+	case "", "host":
+	case "container":
+		if len(parts) != 2 || parts[1] == "" {
+			return false
+		}
+	default:
+		return false
+	}
+	return true
+}
+
+// Container returns the name of the container ipc stack is going to be used.
+func (n IpcMode) Container() string {
+	parts := strings.SplitN(string(n), ":", 2)
+	if len(parts) > 1 {
+		return parts[1]
+	}
+	return ""
+}
+
+// UsernsMode represents userns mode in the container.
+type UsernsMode string
+
+// IsHost indicates whether the container uses the host's userns.
+func (n UsernsMode) IsHost() bool {
+	return n == "host"
+}
+
+// IsPrivate indicates whether the container uses the a private userns.
+func (n UsernsMode) IsPrivate() bool {
+	return !(n.IsHost())
+}
+
+// Valid indicates whether the userns is valid.
+func (n UsernsMode) Valid() bool {
+	parts := strings.Split(string(n), ":")
+	switch mode := parts[0]; mode {
+	case "", "host":
+	default:
+		return false
+	}
+	return true
+}
+
+// CgroupSpec represents the cgroup to use for the container.
+type CgroupSpec string
+
+// IsContainer indicates whether the container is using another container cgroup
+func (c CgroupSpec) IsContainer() bool {
+	parts := strings.SplitN(string(c), ":", 2)
+	return len(parts) > 1 && parts[0] == "container"
+}
+
+// Valid indicates whether the cgroup spec is valid.
+func (c CgroupSpec) Valid() bool {
+	return c.IsContainer() || c == ""
+}
+
+// Container returns the name of the container whose cgroup will be used.
+func (c CgroupSpec) Container() string {
+	parts := strings.SplitN(string(c), ":", 2)
+	if len(parts) > 1 {
+		return parts[1]
+	}
+	return ""
+}
+
+// UTSMode represents the UTS namespace of the container.
+type UTSMode string
+
+// IsPrivate indicates whether the container uses its private UTS namespace.
+func (n UTSMode) IsPrivate() bool {
+	return !(n.IsHost())
+}
+
+// IsHost indicates whether the container uses the host's UTS namespace.
+func (n UTSMode) IsHost() bool {
+	return n == "host"
+}
+
+// Valid indicates whether the UTS namespace is valid.
+func (n UTSMode) Valid() bool {
+	parts := strings.Split(string(n), ":")
+	switch mode := parts[0]; mode {
+	case "", "host":
+	default:
+		return false
+	}
+	return true
+}
+
+// PidMode represents the pid stack of the container.
+type PidMode string
+
+// IsPrivate indicates whether the container uses its private pid stack.
+func (n PidMode) IsPrivate() bool {
+	return !(n.IsHost())
+}
+
+// IsHost indicates whether the container uses the host's pid stack.
+func (n PidMode) IsHost() bool {
+	return n == "host"
+}
+
+// Valid indicates whether the pid stack is valid.
+func (n PidMode) Valid() bool {
+	parts := strings.Split(string(n), ":")
+	switch mode := parts[0]; mode {
+	case "", "host":
+	default:
+		return false
+	}
+	return true
+}
+
+// DeviceMapping represents the device mapping between the host and the container.
+type DeviceMapping struct {
+	PathOnHost        string
+	PathInContainer   string
+	CgroupPermissions string
+}
+
+// RestartPolicy represents the restart policies of the container.
+type RestartPolicy struct {
+	Name              string
+	MaximumRetryCount int
+}
+
+// IsNone indicates whether the container has the "no" restart policy.
+// This means the container will not automatically restart when exiting.
+func (rp *RestartPolicy) IsNone() bool {
+	return rp.Name == "no"
+}
+
+// IsAlways indicates whether the container has the "always" restart policy.
+// This means the container will automatically restart regardless of the exit status.
+func (rp *RestartPolicy) IsAlways() bool {
+	return rp.Name == "always"
+}
+
+// IsOnFailure indicates whether the container has the "on-failure" restart policy.
+// This means the container will automatically restart of exiting with a non-zero exit status.
+func (rp *RestartPolicy) IsOnFailure() bool {
+	return rp.Name == "on-failure"
+}
+
+// IsUnlessStopped indicates whether the container has the
+// "unless-stopped" restart policy. This means the container will
+// automatically restart unless user has put it to stopped state.
+func (rp *RestartPolicy) IsUnlessStopped() bool {
+	return rp.Name == "unless-stopped"
+}
+
+// IsSame compares two RestartPolicy to see if they are the same
+func (rp *RestartPolicy) IsSame(tp *RestartPolicy) bool {
+	return rp.Name == tp.Name && rp.MaximumRetryCount == tp.MaximumRetryCount
+}
+
+// LogConfig represents the logging configuration of the container.
+type LogConfig struct {
+	Type   string
+	Config map[string]string
+}
+
+// Resources contains container's resources (cgroups config, ulimits...)
+type Resources struct {
+	// Applicable to all platforms
+	CPUShares int64 `json:"CpuShares"` // CPU shares (relative weight vs. other containers)
+	Memory    int64 // Memory limit (in bytes)
+
+	// Applicable to UNIX platforms
+	CgroupParent         string // Parent cgroup.
+	BlkioWeight          uint16 // Block IO weight (relative weight vs. other containers)
+	BlkioWeightDevice    []*blkiodev.WeightDevice
+	BlkioDeviceReadBps   []*blkiodev.ThrottleDevice
+	BlkioDeviceWriteBps  []*blkiodev.ThrottleDevice
+	BlkioDeviceReadIOps  []*blkiodev.ThrottleDevice
+	BlkioDeviceWriteIOps []*blkiodev.ThrottleDevice
+	CPUPeriod            int64           `json:"CpuPeriod"` // CPU CFS (Completely Fair Scheduler) period
+	CPUQuota             int64           `json:"CpuQuota"`  // CPU CFS (Completely Fair Scheduler) quota
+	CpusetCpus           string          // CpusetCpus 0-2, 0,1
+	CpusetMems           string          // CpusetMems 0-2, 0,1
+	Devices              []DeviceMapping // List of devices to map inside the container
+	DiskQuota            int64           // Disk limit (in bytes)
+	KernelMemory         int64           // Kernel memory limit (in bytes)
+	MemoryReservation    int64           // Memory soft limit (in bytes)
+	MemorySwap           int64           // Total memory usage (memory + swap); set `-1` to enable unlimited swap
+	MemorySwappiness     *int64          // Tuning container memory swappiness behaviour
+	OomKillDisable       *bool           // Whether to disable OOM Killer or not
+	PidsLimit            int64           // Setting pids limit for a container
+	Ulimits              []*units.Ulimit // List of ulimits to be set in the container
+
+	// Applicable to Windows
+	CPUCount                int64  `json:"CpuCount"`   // CPU count
+	CPUPercent              int64  `json:"CpuPercent"` // CPU percent
+	IOMaximumIOps           uint64 // Maximum IOps for the container system drive
+	IOMaximumBandwidth      uint64 // Maximum IO in bytes per second for the container system drive
+	NetworkMaximumBandwidth uint64 // Maximum bandwidth of the network endpoint in bytes per second
+}
+
+// UpdateConfig holds the mutable attributes of a Container.
+// Those attributes can be updated at runtime.
+type UpdateConfig struct {
+	// Contains container's resources (cgroups, ulimits)
+	Resources
+	RestartPolicy RestartPolicy
+}
+
+// HostConfig the non-portable Config structure of a container.
+// Here, "non-portable" means "dependent of the host we are running on".
+// Portable information *should* appear in Config.
+type HostConfig struct {
+	// Applicable to all platforms
+	Binds           []string      // List of volume bindings for this container
+	ContainerIDFile string        // File (path) where the containerId is written
+	LogConfig       LogConfig     // Configuration of the logs for this container
+	NetworkMode     NetworkMode   // Network mode to use for the container
+	PortBindings    nat.PortMap   // Port mapping between the exposed port (container) and the host
+	RestartPolicy   RestartPolicy // Restart policy to be used for the container
+	AutoRemove      bool          // Automatically remove container when it exits
+	VolumeDriver    string        // Name of the volume driver used to mount volumes
+	VolumesFrom     []string      // List of volumes to take from other container
+
+	// Applicable to UNIX platforms
+	CapAdd          strslice.StrSlice // List of kernel capabilities to add to the container
+	CapDrop         strslice.StrSlice // List of kernel capabilities to remove from the container
+	DNS             []string          `json:"Dns"`        // List of DNS server to lookup
+	DNSOptions      []string          `json:"DnsOptions"` // List of DNSOption to look for
+	DNSSearch       []string          `json:"DnsSearch"`  // List of DNSSearch to look for
+	ExtraHosts      []string          // List of extra hosts
+	GroupAdd        []string          // List of additional groups that the container process will run as
+	IpcMode         IpcMode           // IPC namespace to use for the container
+	Cgroup          CgroupSpec        // Cgroup to use for the container
+	Links           []string          // List of links (in the name:alias form)
+	OomScoreAdj     int               // Container preference for OOM-killing
+	PidMode         PidMode           // PID namespace to use for the container
+	Privileged      bool              // Is the container in privileged mode
+	PublishAllPorts bool              // Should docker publish all exposed port for the container
+	ReadonlyRootfs  bool              // Is the container root filesystem in read-only
+	SecurityOpt     []string          // List of string values to customize labels for MLS systems, such as SELinux.
+	StorageOpt      map[string]string // Storage driver options per container.
+	Tmpfs           map[string]string `json:",omitempty"` // List of tmpfs (mounts) used for the container
+	UTSMode         UTSMode           // UTS namespace to use for the container
+	UsernsMode      UsernsMode        // The user namespace to use for the container
+	ShmSize         int64             // Total shm memory usage
+	Sysctls         map[string]string `json:",omitempty"` // List of Namespaced sysctls used for the container
+
+	// Applicable to Windows
+	ConsoleSize [2]int    // Initial console size
+	Isolation   Isolation // Isolation technology of the container (eg default, hyperv)
+
+	// Contains container's resources (cgroups, ulimits)
+	Resources
+}

vendor/github.com/docker/engine-api/types/container/hostconfig_unix.go

@@ -0,0 +1,81 @@
+// +build !windows
+
+package container
+
+import "strings"
+
+// IsValid indicates if an isolation technology is valid
+func (i Isolation) IsValid() bool {
+	return i.IsDefault()
+}
+
+// IsPrivate indicates whether container uses it's private network stack.
+func (n NetworkMode) IsPrivate() bool {
+	return !(n.IsHost() || n.IsContainer())
+}
+
+// IsDefault indicates whether container uses the default network stack.
+func (n NetworkMode) IsDefault() bool {
+	return n == "default"
+}
+
+// NetworkName returns the name of the network stack.
+func (n NetworkMode) NetworkName() string {
+	if n.IsBridge() {
+		return "bridge"
+	} else if n.IsHost() {
+		return "host"
+	} else if n.IsContainer() {
+		return "container"
+	} else if n.IsNone() {
+		return "none"
+	} else if n.IsDefault() {
+		return "default"
+	} else if n.IsUserDefined() {
+		return n.UserDefined()
+	}
+	return ""
+}
+
+// IsBridge indicates whether container uses the bridge network stack
+func (n NetworkMode) IsBridge() bool {
+	return n == "bridge"
+}
+
+// IsHost indicates whether container uses the host network stack.
+func (n NetworkMode) IsHost() bool {
+	return n == "host"
+}
+
+// IsContainer indicates whether container uses a container network stack.
+func (n NetworkMode) IsContainer() bool {
+	parts := strings.SplitN(string(n), ":", 2)
+	return len(parts) > 1 && parts[0] == "container"
+}
+
+// IsNone indicates whether container isn't using a network stack.
+func (n NetworkMode) IsNone() bool {
+	return n == "none"
+}
+
+// ConnectedContainer is the id of the container which network this container is connected to.
+func (n NetworkMode) ConnectedContainer() string {
+	parts := strings.SplitN(string(n), ":", 2)
+	if len(parts) > 1 {
+		return parts[1]
+	}
+	return ""
+}
+
+// IsUserDefined indicates user-created network
+func (n NetworkMode) IsUserDefined() bool {
+	return !n.IsDefault() && !n.IsBridge() && !n.IsHost() && !n.IsNone() && !n.IsContainer()
+}
+
+//UserDefined indicates user-created network
+func (n NetworkMode) UserDefined() string {
+	if n.IsUserDefined() {
+		return string(n)
+	}
+	return ""
+}

vendor/github.com/docker/engine-api/types/container/hostconfig_windows.go

@@ -0,0 +1,87 @@
+package container
+
+import (
+	"strings"
+)
+
+// IsDefault indicates whether container uses the default network stack.
+func (n NetworkMode) IsDefault() bool {
+	return n == "default"
+}
+
+// IsNone indicates whether container isn't using a network stack.
+func (n NetworkMode) IsNone() bool {
+	return n == "none"
+}
+
+// IsContainer indicates whether container uses a container network stack.
+// Returns false as windows doesn't support this mode
+func (n NetworkMode) IsContainer() bool {
+	return false
+}
+
+// IsBridge indicates whether container uses the bridge network stack
+// in windows it is given the name NAT
+func (n NetworkMode) IsBridge() bool {
+	return n == "nat"
+}
+
+// IsHost indicates whether container uses the host network stack.
+// returns false as this is not supported by windows
+func (n NetworkMode) IsHost() bool {
+	return false
+}
+
+// IsPrivate indicates whether container uses its private network stack.
+func (n NetworkMode) IsPrivate() bool {
+	return !(n.IsHost() || n.IsContainer())
+}
+
+// ConnectedContainer is the id of the container which network this container is connected to.
+// Returns blank string on windows
+func (n NetworkMode) ConnectedContainer() string {
+	return ""
+}
+
+// IsUserDefined indicates user-created network
+func (n NetworkMode) IsUserDefined() bool {
+	return !n.IsDefault() && !n.IsNone() && !n.IsBridge()
+}
+
+// IsHyperV indicates the use of a Hyper-V partition for isolation
+func (i Isolation) IsHyperV() bool {
+	return strings.ToLower(string(i)) == "hyperv"
+}
+
+// IsProcess indicates the use of process isolation
+func (i Isolation) IsProcess() bool {
+	return strings.ToLower(string(i)) == "process"
+}
+
+// IsValid indicates if an isolation technology is valid
+func (i Isolation) IsValid() bool {
+	return i.IsDefault() || i.IsHyperV() || i.IsProcess()
+}
+
+// NetworkName returns the name of the network stack.
+func (n NetworkMode) NetworkName() string {
+	if n.IsDefault() {
+		return "default"
+	} else if n.IsBridge() {
+		return "nat"
+	} else if n.IsNone() {
+		return "none"
+	} else if n.IsUserDefined() {
+		return n.UserDefined()
+	}
+
+	return ""
+}
+
+//UserDefined indicates user-created network
+func (n NetworkMode) UserDefined() string {
+	if n.IsUserDefined() {
+		return string(n)
+	}
+	return ""
+}

vendor/github.com/docker/engine-api/types/filters/parse.go

@@ -0,0 +1,295 @@
+// Package filters provides helper function to parse and handle command line
+// filter, used for example in docker ps or docker images commands.
+package filters
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+
+	"github.com/docker/engine-api/types/versions"
+)
+
+// Args stores filter arguments as map key:{map key: bool}.
+// It contains an aggregation of the map of arguments (which are in the form
+// of -f 'key=value') based on the key, and stores values for the same key
+// in a map with string keys and boolean values.
+// e.g given -f 'label=label1=1' -f 'label=label2=2' -f 'image.name=ubuntu'
+// the args will be {"image.name":{"ubuntu":true},"label":{"label1=1":true,"label2=2":true}}
+type Args struct {
+	fields map[string]map[string]bool
+}
+
+// NewArgs initializes a new Args struct.
+func NewArgs() Args {
+	return Args{fields: map[string]map[string]bool{}}
+}
+
+// ParseFlag parses the argument to the filter flag. Like
+//
+//   `docker ps -f 'created=today' -f 'image.name=ubuntu*'`
+//
+// If prev map is provided, then it is appended to, and returned. By default a new
+// map is created.
+func ParseFlag(arg string, prev Args) (Args, error) {
+	filters := prev
+	if len(arg) == 0 {
+		return filters, nil
+	}
+
+	if !strings.Contains(arg, "=") {
+		return filters, ErrBadFormat
+	}
+
+	f := strings.SplitN(arg, "=", 2)
+
+	name := strings.ToLower(strings.TrimSpace(f[0]))
+	value := strings.TrimSpace(f[1])
+
+	filters.Add(name, value)
+
+	return filters, nil
+}
+
+// ErrBadFormat is an error returned in case of bad format for a filter.
+var ErrBadFormat = errors.New("bad format of filter (expected name=value)")
+
+// ToParam packs the Args into a string for easy transport from client to server.
+func ToParam(a Args) (string, error) {
+	// this way we don't URL encode {}, just empty space
+	if a.Len() == 0 {
+		return "", nil
+	}
+
+	buf, err := json.Marshal(a.fields)
+	if err != nil {
+		return "", err
+	}
+	return string(buf), nil
+}
+
+// ToParamWithVersion packs the Args into a string for easy transport from client to server.
+// The generated string will depend on the specified version (corresponding to the API version).
+func ToParamWithVersion(version string, a Args) (string, error) {
+	// this way we don't URL encode {}, just empty space
+	if a.Len() == 0 {
+		return "", nil
+	}
+
+	// for daemons older than v1.10, filter must be of the form map[string][]string
+	buf := []byte{}
+	err := errors.New("")
+	if version != "" && versions.LessThan(version, "1.22") {
+		buf, err = json.Marshal(convertArgsToSlice(a.fields))
+	} else {
+		buf, err = json.Marshal(a.fields)
+	}
+	if err != nil {
+		return "", err
+	}
+	return string(buf), nil
+}
+
+// FromParam unpacks the filter Args.
+func FromParam(p string) (Args, error) {
+	if len(p) == 0 {
+		return NewArgs(), nil
+	}
+
+	r := strings.NewReader(p)
+	d := json.NewDecoder(r)
+
+	m := map[string]map[string]bool{}
+	if err := d.Decode(&m); err != nil {
+		r.Seek(0, 0)
+
+		// Allow parsing old arguments in slice format.
+		// Because other libraries might be sending them in this format.
+		deprecated := map[string][]string{}
+		if deprecatedErr := d.Decode(&deprecated); deprecatedErr == nil {
+			m = deprecatedArgs(deprecated)
+		} else {
+			return NewArgs(), err
+		}
+	}
+	return Args{m}, nil
+}
+
+// Get returns the list of values associates with a field.
+// It returns a slice of strings to keep backwards compatibility with old code.
+func (filters Args) Get(field string) []string {
+	values := filters.fields[field]
+	if values == nil {
+		return make([]string, 0)
+	}
+	slice := make([]string, 0, len(values))
+	for key := range values {
+		slice = append(slice, key)
+	}
+	return slice
+}
+
+// Add adds a new value to a filter field.
+func (filters Args) Add(name, value string) {
+	if _, ok := filters.fields[name]; ok {
+		filters.fields[name][value] = true
+	} else {
+		filters.fields[name] = map[string]bool{value: true}
+	}
+}
+
+// Del removes a value from a filter field.
+func (filters Args) Del(name, value string) {
+	if _, ok := filters.fields[name]; ok {
+		delete(filters.fields[name], value)
+	}
+}
+
+// Len returns the number of fields in the arguments.
+func (filters Args) Len() int {
+	return len(filters.fields)
+}
+
+// MatchKVList returns true if the values for the specified field matches the ones
+// from the sources.
+// e.g. given Args are {'label': {'label1=1','label2=1'}, 'image.name', {'ubuntu'}},
+//      field is 'label' and sources are {'label1': '1', 'label2': '2'}
+//      it returns true.
+func (filters Args) MatchKVList(field string, sources map[string]string) bool {
+	fieldValues := filters.fields[field]
+
+	//do not filter if there is no filter set or cannot determine filter
+	if len(fieldValues) == 0 {
+		return true
+	}
+
+	if sources == nil || len(sources) == 0 {
+		return false
+	}
+
+	for name2match := range fieldValues {
+		testKV := strings.SplitN(name2match, "=", 2)
+
+		v, ok := sources[testKV[0]]
+		if !ok {
+			return false
+		}
+		if len(testKV) == 2 && testKV[1] != v {
+			return false
+		}
+	}
+
+	return true
+}
+
+// Match returns true if the values for the specified field matches the source string
+// e.g. given Args are {'label': {'label1=1','label2=1'}, 'image.name', {'ubuntu'}},
+//      field is 'image.name' and source is 'ubuntu'
+//      it returns true.
+func (filters Args) Match(field, source string) bool {
+	if filters.ExactMatch(field, source) {
+		return true
+	}
+
+	fieldValues := filters.fields[field]
+	for name2match := range fieldValues {
+		match, err := regexp.MatchString(name2match, source)
+		if err != nil {
+			continue
+		}
+		if match {
+			return true
+		}
+	}
+	return false
+}
+
+// ExactMatch returns true if the source matches exactly one of the filters.
+func (filters Args) ExactMatch(field, source string) bool {
+	fieldValues, ok := filters.fields[field]
+	//do not filter if there is no filter set or cannot determine filter
+	if !ok || len(fieldValues) == 0 {
+		return true
+	}
+
+	// try to match full name value to avoid O(N) regular expression matching
+	if fieldValues[source] {
+		return true
+	}
+	return false
+}
+
+// FuzzyMatch returns true if the source matches exactly one of the filters,
+// or the source has one of the filters as a prefix.
+func (filters Args) FuzzyMatch(field, source string) bool {
+	if filters.ExactMatch(field, source) {
+		return true
+	}
+
+	fieldValues := filters.fields[field]
+	for prefix := range fieldValues {
+		if strings.HasPrefix(source, prefix) {
+			return true
+		}
+	}
+	return false
+}
+
+// Include returns true if the name of the field to filter is in the filters.
+func (filters Args) Include(field string) bool {
+	_, ok := filters.fields[field]
+	return ok
+}
+
+// Validate ensures that all the fields in the filter are valid.
+// It returns an error as soon as it finds an invalid field.
+func (filters Args) Validate(accepted map[string]bool) error {
+	for name := range filters.fields {
+		if !accepted[name] {
+			return fmt.Errorf("Invalid filter '%s'", name)
+		}
+	}
+	return nil
+}
+
+// WalkValues iterates over the list of filtered values for a field.
+// It stops the iteration if it finds an error and it returns that error.
+func (filters Args) WalkValues(field string, op func(value string) error) error {
+	if _, ok := filters.fields[field]; !ok {
+		return nil
+	}
+	for v := range filters.fields[field] {
+		if err := op(v); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func deprecatedArgs(d map[string][]string) map[string]map[string]bool {
+	m := map[string]map[string]bool{}
+	for k, v := range d {
+		values := map[string]bool{}
+		for _, vv := range v {
+			values[vv] = true
+		}
+		m[k] = values
+	}
+	return m
+}
+
+func convertArgsToSlice(f map[string]map[string]bool) map[string][]string {
+	m := map[string][]string{}
+	for k, v := range f {
+		values := []string{}
+		for kk := range v {
+			if v[kk] {
+				values = append(values, kk)
+			}
+		}
+		m[k] = values
+	}
+	return m
+}

vendor/github.com/docker/engine-api/types/network/network.go

@@ -0,0 +1,52 @@
+package network
+
+// Address represents an IP address
+type Address struct {
+	Addr      string
+	PrefixLen int
+}
+
+// IPAM represents IP Address Management
+type IPAM struct {
+	Driver  string
+	Options map[string]string //Per network IPAM driver options
+	Config  []IPAMConfig
+}
+
+// IPAMConfig represents IPAM configurations
+type IPAMConfig struct {
+	Subnet     string            `json:",omitempty"`
+	IPRange    string            `json:",omitempty"`
+	Gateway    string            `json:",omitempty"`
+	AuxAddress map[string]string `json:"AuxiliaryAddresses,omitempty"`
+}
+
+// EndpointIPAMConfig represents IPAM configurations for the endpoint
+type EndpointIPAMConfig struct {
+	IPv4Address string `json:",omitempty"`
+	IPv6Address string `json:",omitempty"`
+}
+
+// EndpointSettings stores the network endpoint details
+type EndpointSettings struct {
+	// Configurations
+	IPAMConfig *EndpointIPAMConfig
+	Links      []string
+	Aliases    []string
+	// Operational data
+	NetworkID           string
+	EndpointID          string
+	Gateway             string
+	IPAddress           string
+	IPPrefixLen         int
+	IPv6Gateway         string
+	GlobalIPv6Address   string
+	GlobalIPv6PrefixLen int
+	MacAddress          string
+}
+
+// NetworkingConfig represents the container's networking configuration for each of its interfaces
+// Carries the networking configs specified in the `docker run` and `docker network connect` commands
+type NetworkingConfig struct {
+	EndpointsConfig map[string]*EndpointSettings // Endpoint configs for each connecting network
+}

vendor/github.com/docker/engine-api/types/registry/registry.go

@@ -0,0 +1,101 @@
+package registry
+
+import (
+	"encoding/json"
+	"net"
+)
+
+// ServiceConfig stores daemon registry services configuration.
+type ServiceConfig struct {
+	InsecureRegistryCIDRs []*NetIPNet           `json:"InsecureRegistryCIDRs"`
+	IndexConfigs          map[string]*IndexInfo `json:"IndexConfigs"`
+	Mirrors               []string
+}
+
+// NetIPNet is the net.IPNet type, which can be marshalled and
+// unmarshalled to JSON
+type NetIPNet net.IPNet
+
+// MarshalJSON returns the JSON representation of the IPNet
+func (ipnet *NetIPNet) MarshalJSON() ([]byte, error) {
+	return json.Marshal((*net.IPNet)(ipnet).String())
+}
+
+// UnmarshalJSON sets the IPNet from a byte array of JSON
+func (ipnet *NetIPNet) UnmarshalJSON(b []byte) (err error) {
+	var ipnetStr string
+	if err = json.Unmarshal(b, &ipnetStr); err == nil {
+		var cidr *net.IPNet
+		if _, cidr, err = net.ParseCIDR(ipnetStr); err == nil {
+			*ipnet = NetIPNet(*cidr)
+		}
+	}
+	return
+}
+
+// IndexInfo contains information about a registry
+//
+// RepositoryInfo Examples:
+// {
+//   "Index" : {
+//     "Name" : "docker.io",
+//     "Mirrors" : ["https://registry-2.docker.io/v1/", "https://registry-3.docker.io/v1/"],
+//     "Secure" : true,
+//     "Official" : true,
+//   },
+//   "RemoteName" : "library/debian",
+//   "LocalName" : "debian",
+//   "CanonicalName" : "docker.io/debian"
+//   "Official" : true,
+// }
+//
+// {
+//   "Index" : {
+//     "Name" : "127.0.0.1:5000",
+//     "Mirrors" : [],
+//     "Secure" : false,
+//     "Official" : false,
+//   },
+//   "RemoteName" : "user/repo",
+//   "LocalName" : "127.0.0.1:5000/user/repo",
+//   "CanonicalName" : "127.0.0.1:5000/user/repo",
+//   "Official" : false,
+// }
+type IndexInfo struct {
+	// Name is the name of the registry, such as "docker.io"
+	Name string
+	// Mirrors is a list of mirrors, expressed as URIs
+	Mirrors []string
+	// Secure is set to false if the registry is part of the list of
+	// insecure registries. Insecure registries accept HTTP and/or accept
+	// HTTPS with certificates from unknown CAs.
+	Secure bool
+	// Official indicates whether this is an official registry
+	Official bool
+}
+
+// SearchResult describes a search result returned from a registry
+type SearchResult struct {
+	// StarCount indicates the number of stars this repository has
+	StarCount int `json:"star_count"`
+	// IsOfficial indicates whether the result is an official repository or not
+	IsOfficial bool `json:"is_official"`
+	// Name is the name of the repository
+	Name string `json:"name"`
+	// IsTrusted indicates whether the result is trusted
+	IsTrusted bool `json:"is_trusted"`
+	// IsAutomated indicates whether the result is automated
+	IsAutomated bool `json:"is_automated"`
+	// Description is a textual description of the repository
+	Description string `json:"description"`
+}
+
+// SearchResults lists a collection search results returned from a registry
+type SearchResults struct {
+	// Query contains the query string that generated the search results
+	Query string `json:"query"`
+	// NumResults indicates the number of results the query returned
+	NumResults int `json:"num_results"`
+	// Results is a slice containing the actual results for the search
+	Results []SearchResult `json:"results"`
+}

vendor/github.com/docker/engine-api/types/seccomp.go

@@ -0,0 +1,68 @@
+package types
+
+// Seccomp represents the config for a seccomp profile for syscall restriction.
+type Seccomp struct {
+	DefaultAction Action     `json:"defaultAction"`
+	Architectures []Arch     `json:"architectures"`
+	Syscalls      []*Syscall `json:"syscalls"`
+}
+
+// Arch used for additional architectures
+type Arch string
+
+// Additional architectures permitted to be used for system calls
+// By default only the native architecture of the kernel is permitted
+const (
+	ArchX86         Arch = "SCMP_ARCH_X86"
+	ArchX86_64      Arch = "SCMP_ARCH_X86_64"
+	ArchX32         Arch = "SCMP_ARCH_X32"
+	ArchARM         Arch = "SCMP_ARCH_ARM"
+	ArchAARCH64     Arch = "SCMP_ARCH_AARCH64"
+	ArchMIPS        Arch = "SCMP_ARCH_MIPS"
+	ArchMIPS64      Arch = "SCMP_ARCH_MIPS64"
+	ArchMIPS64N32   Arch = "SCMP_ARCH_MIPS64N32"
+	ArchMIPSEL      Arch = "SCMP_ARCH_MIPSEL"
+	ArchMIPSEL64    Arch = "SCMP_ARCH_MIPSEL64"
+	ArchMIPSEL64N32 Arch = "SCMP_ARCH_MIPSEL64N32"
+)
+
+// Action taken upon Seccomp rule match
+type Action string
+
+// Define actions for Seccomp rules
+const (
+	ActKill  Action = "SCMP_ACT_KILL"
+	ActTrap  Action = "SCMP_ACT_TRAP"
+	ActErrno Action = "SCMP_ACT_ERRNO"
+	ActTrace Action = "SCMP_ACT_TRACE"
+	ActAllow Action = "SCMP_ACT_ALLOW"
+)
+
+// Operator used to match syscall arguments in Seccomp
+type Operator string
+
+// Define operators for syscall arguments in Seccomp
+const (
+	OpNotEqual     Operator = "SCMP_CMP_NE"
+	OpLessThan     Operator = "SCMP_CMP_LT"
+	OpLessEqual    Operator = "SCMP_CMP_LE"
+	OpEqualTo      Operator = "SCMP_CMP_EQ"
+	OpGreaterEqual Operator = "SCMP_CMP_GE"
+	OpGreaterThan  Operator = "SCMP_CMP_GT"
+	OpMaskedEqual  Operator = "SCMP_CMP_MASKED_EQ"
+)
+
+// Arg used for matching specific syscall arguments in Seccomp
+type Arg struct {
+	Index    uint     `json:"index"`
+	Value    uint64   `json:"value"`
+	ValueTwo uint64   `json:"valueTwo"`
+	Op       Operator `json:"op"`
+}
+
+// Syscall is used to match a syscall in Seccomp
+type Syscall struct {
+	Name   string `json:"name"`
+	Action Action `json:"action"`
+	Args   []*Arg `json:"args"`
+}

vendor/github.com/docker/engine-api/types/stats.go

@@ -0,0 +1,115 @@
+// Package types is used for API stability in the types and response to the
+// consumers of the API stats endpoint.
+package types
+
+import "time"
+
+// ThrottlingData stores CPU throttling stats of one running container
+type ThrottlingData struct {
+	// Number of periods with throttling active
+	Periods uint64 `json:"periods"`
+	// Number of periods when the container hits its throttling limit.
+	ThrottledPeriods uint64 `json:"throttled_periods"`
+	// Aggregate time the container was throttled for in nanoseconds.
+	ThrottledTime uint64 `json:"throttled_time"`
+}
+
+// CPUUsage stores All CPU stats aggregated since container inception.
+type CPUUsage struct {
+	// Total CPU time consumed.
+	// Units: nanoseconds.
+	TotalUsage uint64 `json:"total_usage"`
+	// Total CPU time consumed per core.
+	// Units: nanoseconds.
+	PercpuUsage []uint64 `json:"percpu_usage"`
+	// Time spent by tasks of the cgroup in kernel mode.
+	// Units: nanoseconds.
+	UsageInKernelmode uint64 `json:"usage_in_kernelmode"`
+	// Time spent by tasks of the cgroup in user mode.
+	// Units: nanoseconds.
+	UsageInUsermode uint64 `json:"usage_in_usermode"`
+}
+
+// CPUStats aggregates and wraps all CPU related info of container
+type CPUStats struct {
+	CPUUsage       CPUUsage       `json:"cpu_usage"`
+	SystemUsage    uint64         `json:"system_cpu_usage"`
+	ThrottlingData ThrottlingData `json:"throttling_data,omitempty"`
+}
+
+// MemoryStats aggregates All memory stats since container inception
+type MemoryStats struct {
+	// current res_counter usage for memory
+	Usage uint64 `json:"usage"`
+	// maximum usage ever recorded.
+	MaxUsage uint64 `json:"max_usage"`
+	// TODO(vishh): Export these as stronger types.
+	// all the stats exported via memory.stat.
+	Stats map[string]uint64 `json:"stats"`
+	// number of times memory usage hits limits.
+	Failcnt uint64 `json:"failcnt"`
+	Limit   uint64 `json:"limit"`
+}
+
+// BlkioStatEntry is one small entity to store a piece of Blkio stats
+// TODO Windows: This can be factored out
+type BlkioStatEntry struct {
+	Major uint64 `json:"major"`
+	Minor uint64 `json:"minor"`
+	Op    string `json:"op"`
+	Value uint64 `json:"value"`
+}
+
+// BlkioStats stores All IO service stats for data read and write
+// TODO Windows: This can be factored out
+type BlkioStats struct {
+	// number of bytes transferred to and from the block device
+	IoServiceBytesRecursive []BlkioStatEntry `json:"io_service_bytes_recursive"`
+	IoServicedRecursive     []BlkioStatEntry `json:"io_serviced_recursive"`
+	IoQueuedRecursive       []BlkioStatEntry `json:"io_queue_recursive"`
+	IoServiceTimeRecursive  []BlkioStatEntry `json:"io_service_time_recursive"`
+	IoWaitTimeRecursive     []BlkioStatEntry `json:"io_wait_time_recursive"`
+	IoMergedRecursive       []BlkioStatEntry `json:"io_merged_recursive"`
+	IoTimeRecursive         []BlkioStatEntry `json:"io_time_recursive"`
+	SectorsRecursive        []BlkioStatEntry `json:"sectors_recursive"`
+}
+
+// NetworkStats aggregates All network stats of one container
+// TODO Windows: This will require refactoring
+type NetworkStats struct {
+	RxBytes   uint64 `json:"rx_bytes"`
+	RxPackets uint64 `json:"rx_packets"`
+	RxErrors  uint64 `json:"rx_errors"`
+	RxDropped uint64 `json:"rx_dropped"`
+	TxBytes   uint64 `json:"tx_bytes"`
+	TxPackets uint64 `json:"tx_packets"`
+	TxErrors  uint64 `json:"tx_errors"`
+	TxDropped uint64 `json:"tx_dropped"`
+}
+
+// PidsStats contains the stats of a container's pids
+type PidsStats struct {
+	// Current is the number of pids in the cgroup
+	Current uint64 `json:"current,omitempty"`
+	// Limit is the hard limit on the number of pids in the cgroup.
+	// A "Limit" of 0 means that there is no limit.
+	Limit uint64 `json:"limit,omitempty"`
+}
+
+// Stats is Ultimate struct aggregating all types of stats of one container
+type Stats struct {
+	Read        time.Time   `json:"read"`
+	PreCPUStats CPUStats    `json:"precpu_stats,omitempty"`
+	CPUStats    CPUStats    `json:"cpu_stats,omitempty"`
+	MemoryStats MemoryStats `json:"memory_stats,omitempty"`
+	BlkioStats  BlkioStats  `json:"blkio_stats,omitempty"`
+	PidsStats   PidsStats   `json:"pids_stats,omitempty"`
+}
+
+// StatsJSON is newly used Networks
+type StatsJSON struct {
+	Stats
+
+	// Networks request version >=1.21
+	Networks map[string]NetworkStats `json:"networks,omitempty"`
+}

vendor/github.com/docker/engine-api/types/strslice/strslice.go

@@ -0,0 +1,30 @@
+package strslice
+
+import "encoding/json"
+
+// StrSlice represents a string or an array of strings.
+// We need to override the json decoder to accept both options.
+type StrSlice []string
+
+// UnmarshalJSON decodes the byte slice whether it's a string or an array of
+// strings. This method is needed to implement json.Unmarshaler.
+func (e *StrSlice) UnmarshalJSON(b []byte) error {
+	if len(b) == 0 {
+		// With no input, we preserve the existing value by returning nil and
+		// leaving the target alone. This allows defining default values for
+		// the type.
+		return nil
+	}
+
+	p := make([]string, 0, 1)
+	if err := json.Unmarshal(b, &p); err != nil {
+		var s string
+		if err := json.Unmarshal(b, &s); err != nil {
+			return err
+		}
+		p = append(p, s)
+	}
+
+	*e = p
+	return nil
+}

vendor/github.com/docker/engine-api/types/types.go

@@ -0,0 +1,472 @@
+package types
+
+import (
+	"os"
+	"time"
+
+	"github.com/docker/engine-api/types/container"
+	"github.com/docker/engine-api/types/network"
+	"github.com/docker/engine-api/types/registry"
+	"github.com/docker/go-connections/nat"
+)
+
+// ContainerCreateResponse contains the information returned to a client on the
+// creation of a new container.
+type ContainerCreateResponse struct {
+	// ID is the ID of the created container.
+	ID string `json:"Id"`
+
+	// Warnings are any warnings encountered during the creation of the container.
+	Warnings []string `json:"Warnings"`
+}
+
+// ContainerExecCreateResponse contains response of Remote API:
+// POST "/containers/{name:.*}/exec"
+type ContainerExecCreateResponse struct {
+	// ID is the exec ID.
+	ID string `json:"Id"`
+}
+
+// ContainerUpdateResponse contains response of Remote API:
+// POST /containers/{name:.*}/update
+type ContainerUpdateResponse struct {
+	// Warnings are any warnings encountered during the updating of the container.
+	Warnings []string `json:"Warnings"`
+}
+
+// AuthResponse contains response of Remote API:
+// POST "/auth"
+type AuthResponse struct {
+	// Status is the authentication status
+	Status string `json:"Status"`
+
+	// IdentityToken is an opaque token used for authenticating
+	// a user after a successful login.
+	IdentityToken string `json:"IdentityToken,omitempty"`
+}
+
+// ContainerWaitResponse contains response of Remote API:
+// POST "/containers/"+containerID+"/wait"
+type ContainerWaitResponse struct {
+	// StatusCode is the status code of the wait job
+	StatusCode int `json:"StatusCode"`
+}
+
+// ContainerCommitResponse contains response of Remote API:
+// POST "/commit?container="+containerID
+type ContainerCommitResponse struct {
+	ID string `json:"Id"`
+}
+
+// ContainerChange contains response of Remote API:
+// GET "/containers/{name:.*}/changes"
+type ContainerChange struct {
+	Kind int
+	Path string
+}
+
+// ImageHistory contains response of Remote API:
+// GET "/images/{name:.*}/history"
+type ImageHistory struct {
+	ID        string `json:"Id"`
+	Created   int64
+	CreatedBy string
+	Tags      []string
+	Size      int64
+	Comment   string
+}
+
+// ImageDelete contains response of Remote API:
+// DELETE "/images/{name:.*}"
+type ImageDelete struct {
+	Untagged string `json:",omitempty"`
+	Deleted  string `json:",omitempty"`
+}
+
+// Image contains response of Remote API:
+// GET "/images/json"
+type Image struct {
+	ID          string `json:"Id"`
+	ParentID    string `json:"ParentId"`
+	RepoTags    []string
+	RepoDigests []string
+	Created     int64
+	Size        int64
+	VirtualSize int64
+	Labels      map[string]string
+}
+
+// GraphDriverData returns Image's graph driver config info
+// when calling inspect command
+type GraphDriverData struct {
+	Name string
+	Data map[string]string
+}
+
+// RootFS returns Image's RootFS description including the layer IDs.
+type RootFS struct {
+	Type      string
+	Layers    []string `json:",omitempty"`
+	BaseLayer string   `json:",omitempty"`
+}
+
+// ImageInspect contains response of Remote API:
+// GET "/images/{name:.*}/json"
+type ImageInspect struct {
+	ID              string `json:"Id"`
+	RepoTags        []string
+	RepoDigests     []string
+	Parent          string
+	Comment         string
+	Created         string
+	Container       string
+	ContainerConfig *container.Config
+	DockerVersion   string
+	Author          string
+	Config          *container.Config
+	Architecture    string
+	Os              string
+	Size            int64
+	VirtualSize     int64
+	GraphDriver     GraphDriverData
+	RootFS          RootFS
+}
+
+// Port stores open ports info of container
+// e.g. {"PrivatePort": 8080, "PublicPort": 80, "Type": "tcp"}
+type Port struct {
+	IP          string `json:",omitempty"`
+	PrivatePort int
+	PublicPort  int `json:",omitempty"`
+	Type        string
+}
+
+// Container contains response of Remote API:
+// GET  "/containers/json"
+type Container struct {
+	ID         string `json:"Id"`
+	Names      []string
+	Image      string
+	ImageID    string
+	Command    string
+	Created    int64
+	Ports      []Port
+	SizeRw     int64 `json:",omitempty"`
+	SizeRootFs int64 `json:",omitempty"`
+	Labels     map[string]string
+	State      string
+	Status     string
+	HostConfig struct {
+		NetworkMode string `json:",omitempty"`
+	}
+	NetworkSettings *SummaryNetworkSettings
+	Mounts          []MountPoint
+}
+
+// CopyConfig contains request body of Remote API:
+// POST "/containers/"+containerID+"/copy"
+type CopyConfig struct {
+	Resource string
+}
+
+// ContainerPathStat is used to encode the header from
+// GET "/containers/{name:.*}/archive"
+// "Name" is the file or directory name.
+type ContainerPathStat struct {
+	Name       string      `json:"name"`
+	Size       int64       `json:"size"`
+	Mode       os.FileMode `json:"mode"`
+	Mtime      time.Time   `json:"mtime"`
+	LinkTarget string      `json:"linkTarget"`
+}
+
+// ContainerProcessList contains response of Remote API:
+// GET "/containers/{name:.*}/top"
+type ContainerProcessList struct {
+	Processes [][]string
+	Titles    []string
+}
+
+// Version contains response of Remote API:
+// GET "/version"
+type Version struct {
+	Version       string
+	APIVersion    string `json:"ApiVersion"`
+	GitCommit     string
+	GoVersion     string
+	Os            string
+	Arch          string
+	KernelVersion string `json:",omitempty"`
+	Experimental  bool   `json:",omitempty"`
+	BuildTime     string `json:",omitempty"`
+}
+
+// Info contains response of Remote API:
+// GET "/info"
+type Info struct {
+	ID                 string
+	Containers         int
+	ContainersRunning  int
+	ContainersPaused   int
+	ContainersStopped  int
+	Images             int
+	Driver             string
+	DriverStatus       [][2]string
+	SystemStatus       [][2]string
+	Plugins            PluginsInfo
+	MemoryLimit        bool
+	SwapLimit          bool
+	KernelMemory       bool
+	CPUCfsPeriod       bool `json:"CpuCfsPeriod"`
+	CPUCfsQuota        bool `json:"CpuCfsQuota"`
+	CPUShares          bool
+	CPUSet             bool
+	IPv4Forwarding     bool
+	BridgeNfIptables   bool
+	BridgeNfIP6tables  bool `json:"BridgeNfIp6tables"`
+	Debug              bool
+	NFd                int
+	OomKillDisable     bool
+	NGoroutines        int
+	SystemTime         string
+	ExecutionDriver    string
+	LoggingDriver      string
+	CgroupDriver       string
+	NEventsListener    int
+	KernelVersion      string
+	OperatingSystem    string
+	OSType             string
+	Architecture       string
+	IndexServerAddress string
+	RegistryConfig     *registry.ServiceConfig
+	NCPU               int
+	MemTotal           int64
+	DockerRootDir      string
+	HTTPProxy          string `json:"HttpProxy"`
+	HTTPSProxy         string `json:"HttpsProxy"`
+	NoProxy            string
+	Name               string
+	Labels             []string
+	ExperimentalBuild  bool
+	ServerVersion      string
+	ClusterStore       string
+	ClusterAdvertise   string
+	SecurityOptions    []string
+}
+
+// PluginsInfo is a temp struct holding Plugins name
+// registered with docker daemon. It is used by Info struct
+type PluginsInfo struct {
+	// List of Volume plugins registered
+	Volume []string
+	// List of Network plugins registered
+	Network []string
+	// List of Authorization plugins registered
+	Authorization []string
+}
+
+// ExecStartCheck is a temp struct used by execStart
+// Config fields is part of ExecConfig in runconfig package
+type ExecStartCheck struct {
+	// ExecStart will first check if it's detached
+	Detach bool
+	// Check if there's a tty
+	Tty bool
+}
+
+// ContainerState stores container's running state
+// it's part of ContainerJSONBase and will return by "inspect" command
+type ContainerState struct {
+	Status     string
+	Running    bool
+	Paused     bool
+	Restarting bool
+	OOMKilled  bool
+	Dead       bool
+	Pid        int
+	ExitCode   int
+	Error      string
+	StartedAt  string
+	FinishedAt string
+}
+
+// ContainerNode stores information about the node that a container
+// is running on.  It's only available in Docker Swarm
+type ContainerNode struct {
+	ID        string
+	IPAddress string `json:"IP"`
+	Addr      string
+	Name      string
+	Cpus      int
+	Memory    int
+	Labels    map[string]string
+}
+
+// ContainerJSONBase contains response of Remote API:
+// GET "/containers/{name:.*}/json"
+type ContainerJSONBase struct {
+	ID              string `json:"Id"`
+	Created         string
+	Path            string
+	Args            []string
+	State           *ContainerState
+	Image           string
+	ResolvConfPath  string
+	HostnamePath    string
+	HostsPath       string
+	LogPath         string
+	Node            *ContainerNode `json:",omitempty"`
+	Name            string
+	RestartCount    int
+	Driver          string
+	MountLabel      string
+	ProcessLabel    string
+	AppArmorProfile string
+	ExecIDs         []string
+	HostConfig      *container.HostConfig
+	GraphDriver     GraphDriverData
+	SizeRw          *int64 `json:",omitempty"`
+	SizeRootFs      *int64 `json:",omitempty"`
+}
+
+// ContainerJSON is newly used struct along with MountPoint
+type ContainerJSON struct {
+	*ContainerJSONBase
+	Mounts          []MountPoint
+	Config          *container.Config
+	NetworkSettings *NetworkSettings
+}
+
+// NetworkSettings exposes the network settings in the api
+type NetworkSettings struct {
+	NetworkSettingsBase
+	DefaultNetworkSettings
+	Networks map[string]*network.EndpointSettings
+}
+
+// SummaryNetworkSettings provides a summary of container's networks
+// in /containers/json
+type SummaryNetworkSettings struct {
+	Networks map[string]*network.EndpointSettings
+}
+
+// NetworkSettingsBase holds basic information about networks
+type NetworkSettingsBase struct {
+	Bridge                 string
+	SandboxID              string
+	HairpinMode            bool
+	LinkLocalIPv6Address   string
+	LinkLocalIPv6PrefixLen int
+	Ports                  nat.PortMap
+	SandboxKey             string
+	SecondaryIPAddresses   []network.Address
+	SecondaryIPv6Addresses []network.Address
+}
+
+// DefaultNetworkSettings holds network information
+// during the 2 release deprecation period.
+// It will be removed in Docker 1.11.
+type DefaultNetworkSettings struct {
+	EndpointID          string
+	Gateway             string
+	GlobalIPv6Address   string
+	GlobalIPv6PrefixLen int
+	IPAddress           string
+	IPPrefixLen         int
+	IPv6Gateway         string
+	MacAddress          string
+}
+
+// MountPoint represents a mount point configuration inside the container.
+type MountPoint struct {
+	Name        string `json:",omitempty"`
+	Source      string
+	Destination string
+	Driver      string `json:",omitempty"`
+	Mode        string
+	RW          bool
+	Propagation string
+}
+
+// Volume represents the configuration of a volume for the remote API
+type Volume struct {
+	Name       string                 // Name is the name of the volume
+	Driver     string                 // Driver is the Driver name used to create the volume
+	Mountpoint string                 // Mountpoint is the location on disk of the volume
+	Status     map[string]interface{} `json:",omitempty"` // Status provides low-level status information about the volume
+	Labels     map[string]string      // Labels is metadata specific to the volume
+}
+
+// VolumesListResponse contains the response for the remote API:
+// GET "/volumes"
+type VolumesListResponse struct {
+	Volumes  []*Volume // Volumes is the list of volumes being returned
+	Warnings []string  // Warnings is a list of warnings that occurred when getting the list from the volume drivers
+}
+
+// VolumeCreateRequest contains the response for the remote API:
+// POST "/volumes/create"
+type VolumeCreateRequest struct {
+	Name       string            // Name is the requested name of the volume
+	Driver     string            // Driver is the name of the driver that should be used to create the volume
+	DriverOpts map[string]string // DriverOpts holds the driver specific options to use for when creating the volume.
+	Labels     map[string]string // Labels holds metadata specific to the volume being created.
+}
+
+// NetworkResource is the body of the "get network" http response message
+type NetworkResource struct {
+	Name       string
+	ID         string `json:"Id"`
+	Scope      string
+	Driver     string
+	EnableIPv6 bool
+	IPAM       network.IPAM
+	Internal   bool
+	Containers map[string]EndpointResource
+	Options    map[string]string
+	Labels     map[string]string
+}
+
+// EndpointResource contains network resources allocated and used for a container in a network
+type EndpointResource struct {
+	Name        string
+	EndpointID  string
+	MacAddress  string
+	IPv4Address string
+	IPv6Address string
+}
+
+// NetworkCreate is the expected body of the "create network" http request message
+type NetworkCreate struct {
+	CheckDuplicate bool
+	Driver         string
+	EnableIPv6     bool
+	IPAM           network.IPAM
+	Internal       bool
+	Options        map[string]string
+	Labels         map[string]string
+}
+
+// NetworkCreateRequest is the request message sent to the server for network create call.
+type NetworkCreateRequest struct {
+	NetworkCreate
+	Name string
+}
+
+// NetworkCreateResponse is the response message sent by the server for network create call
+type NetworkCreateResponse struct {
+	ID      string `json:"Id"`
+	Warning string
+}
+
+// NetworkConnect represents the data to be used to connect a container to the network
+type NetworkConnect struct {
+	Container      string
+	EndpointConfig *network.EndpointSettings `json:",omitempty"`
+}
+
+// NetworkDisconnect represents the data to be used to disconnect a container from the network
+type NetworkDisconnect struct {
+	Container string
+	Force     bool
+}

vendor/github.com/docker/engine-api/types/versions/README.md

@@ -0,0 +1,14 @@
+## Legacy API type versions
+
+This package includes types for legacy API versions. The stable version of the API types live in `api/types/*.go`.
+
+Consider moving a type here when you need to keep backwards compatibility in the API. This legacy types are organized by the latest API version they appear in. For instance, types in the `v1p19` package are valid for API versions below or equal `1.19`. Types in the `v1p20` package are valid for the API version `1.20`, since the versions below that will use the legacy types in `v1p19`.
+
+### Package name conventions
+
+The package name convention is to use `v` as a prefix for the version number and `p`(patch) as a separator. We use this nomenclature due to a few restrictions in the Go package name convention:
+
+1. We cannot use `.` because it's interpreted by the language, think of `v1.20.CallFunction`.
+2. We cannot use `_` because golint complains abount it. The code is actually valid, but it looks probably more weird: `v1_20.CallFunction`.
+
+For instance, if you want to modify a type that was available in the version `1.21` of the API but it will have different fields in the version `1.22`, you want to create a new package under `api/types/versions/v1p21`.

vendor/github.com/docker/engine-api/types/versions/compare.go

@@ -0,0 +1,62 @@
+package versions
+
+import (
+	"strconv"
+	"strings"
+)
+
+// compare compares two version strings
+// returns -1 if v1 < v2, 1 if v1 > v2, 0 otherwise.
+func compare(v1, v2 string) int {
+	var (
+		currTab  = strings.Split(v1, ".")
+		otherTab = strings.Split(v2, ".")
+	)
+
+	max := len(currTab)
+	if len(otherTab) > max {
+		max = len(otherTab)
+	}
+	for i := 0; i < max; i++ {
+		var currInt, otherInt int
+
+		if len(currTab) > i {
+			currInt, _ = strconv.Atoi(currTab[i])
+		}
+		if len(otherTab) > i {
+			otherInt, _ = strconv.Atoi(otherTab[i])
+		}
+		if currInt > otherInt {
+			return 1
+		}
+		if otherInt > currInt {
+			return -1
+		}
+	}
+	return 0
+}
+
+// LessThan checks if a version is less than another
+func LessThan(v, other string) bool {
+	return compare(v, other) == -1
+}
+
+// LessThanOrEqualTo checks if a version is less than or equal to another
+func LessThanOrEqualTo(v, other string) bool {
+	return compare(v, other) <= 0
+}
+
+// GreaterThan checks if a version is greater than another
+func GreaterThan(v, other string) bool {
+	return compare(v, other) == 1
+}
+
+// GreaterThanOrEqualTo checks if a version is greater than or equal to another
+func GreaterThanOrEqualTo(v, other string) bool {
+	return compare(v, other) >= 0
+}
+
+// Equal checks if a version is equal to another
+func Equal(v, other string) bool {
+	return compare(v, other) == 0
+}

vendor/github.com/docker/go-connections/LICENSE

@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2015 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/docker/go-connections/nat/nat.go

@@ -0,0 +1,223 @@
+// Package nat is a convenience package for manipulation of strings describing network ports.
+package nat
+
+import (
+	"fmt"
+	"net"
+	"strconv"
+	"strings"
+)
+
+const (
+	// portSpecTemplate is the expected format for port specifications
+	portSpecTemplate = "ip:hostPort:containerPort"
+)
+
+// PortBinding represents a binding between a Host IP address and a Host Port
+type PortBinding struct {
+	// HostIP is the host IP Address
+	HostIP string `json:"HostIp"`
+	// HostPort is the host port number
+	HostPort string
+}
+
+// PortMap is a collection of PortBinding indexed by Port
+type PortMap map[Port][]PortBinding
+
+// PortSet is a collection of structs indexed by Port
+type PortSet map[Port]struct{}
+
+// Port is a string containing port number and protocol in the format "80/tcp"
+type Port string
+
+// NewPort creates a new instance of a Port given a protocol and port number or port range
+func NewPort(proto, port string) (Port, error) {
+	// Check for parsing issues on "port" now so we can avoid having
+	// to check it later on.
+
+	portStartInt, portEndInt, err := ParsePortRangeToInt(port)
+	if err != nil {
+		return "", err
+	}
+
+	if portStartInt == portEndInt {
+		return Port(fmt.Sprintf("%d/%s", portStartInt, proto)), nil
+	}
+	return Port(fmt.Sprintf("%d-%d/%s", portStartInt, portEndInt, proto)), nil
+}
+
+// ParsePort parses the port number string and returns an int
+func ParsePort(rawPort string) (int, error) {
+	if len(rawPort) == 0 {
+		return 0, nil
+	}
+	port, err := strconv.ParseUint(rawPort, 10, 16)
+	if err != nil {
+		return 0, err
+	}
+	return int(port), nil
+}
+
+// ParsePortRangeToInt parses the port range string and returns start/end ints
+func ParsePortRangeToInt(rawPort string) (int, int, error) {
+	if len(rawPort) == 0 {
+		return 0, 0, nil
+	}
+	start, end, err := ParsePortRange(rawPort)
+	if err != nil {
+		return 0, 0, err
+	}
+	return int(start), int(end), nil
+}
+
+// Proto returns the protocol of a Port
+func (p Port) Proto() string {
+	proto, _ := SplitProtoPort(string(p))
+	return proto
+}
+
+// Port returns the port number of a Port
+func (p Port) Port() string {
+	_, port := SplitProtoPort(string(p))
+	return port
+}
+
+// Int returns the port number of a Port as an int
+func (p Port) Int() int {
+	portStr := p.Port()
+	if len(portStr) == 0 {
+		return 0
+	}
+
+	// We don't need to check for an error because we're going to
+	// assume that any error would have been found, and reported, in NewPort()
+	port, _ := strconv.ParseUint(portStr, 10, 16)
+	return int(port)
+}
+
+// Range returns the start/end port numbers of a Port range as ints
+func (p Port) Range() (int, int, error) {
+	return ParsePortRangeToInt(p.Port())
+}
+
+// SplitProtoPort splits a port in the format of proto/port
+func SplitProtoPort(rawPort string) (string, string) {
+	parts := strings.Split(rawPort, "/")
+	l := len(parts)
+	if len(rawPort) == 0 || l == 0 || len(parts[0]) == 0 {
+		return "", ""
+	}
+	if l == 1 {
+		return "tcp", rawPort
+	}
+	if len(parts[1]) == 0 {
+		return "tcp", parts[0]
+	}
+	return parts[1], parts[0]
+}
+
+func validateProto(proto string) bool {
+	for _, availableProto := range []string{"tcp", "udp"} {
+		if availableProto == proto {
+			return true
+		}
+	}
+	return false
+}
+
+// ParsePortSpecs receives port specs in the format of ip:public:private/proto and parses
+// these in to the internal types
+func ParsePortSpecs(ports []string) (map[Port]struct{}, map[Port][]PortBinding, error) {
+	var (
+		exposedPorts = make(map[Port]struct{}, len(ports))
+		bindings     = make(map[Port][]PortBinding)
+	)
+
+	for _, rawPort := range ports {
+		proto := "tcp"
+
+		if i := strings.LastIndex(rawPort, "/"); i != -1 {
+			proto = rawPort[i+1:]
+			rawPort = rawPort[:i]
+		}
+		if !strings.Contains(rawPort, ":") {
+			rawPort = fmt.Sprintf("::%s", rawPort)
+		} else if len(strings.Split(rawPort, ":")) == 2 {
+			rawPort = fmt.Sprintf(":%s", rawPort)
+		}
+
+		parts, err := PartParser(portSpecTemplate, rawPort)
+		if err != nil {
+			return nil, nil, err
+		}
+
+		var (
+			containerPort = parts["containerPort"]
+			rawIP         = parts["ip"]
+			hostPort      = parts["hostPort"]
+		)
+
+		if rawIP != "" && net.ParseIP(rawIP) == nil {
+			return nil, nil, fmt.Errorf("Invalid ip address: %s", rawIP)
+		}
+		if containerPort == "" {
+			return nil, nil, fmt.Errorf("No port specified: %s<empty>", rawPort)
+		}
+
+		startPort, endPort, err := ParsePortRange(containerPort)
+		if err != nil {
+			return nil, nil, fmt.Errorf("Invalid containerPort: %s", containerPort)
+		}
+
+		var startHostPort, endHostPort uint64 = 0, 0
+		if len(hostPort) > 0 {
+			startHostPort, endHostPort, err = ParsePortRange(hostPort)
+			if err != nil {
+				return nil, nil, fmt.Errorf("Invalid hostPort: %s", hostPort)
+			}
+		}
+
+		if hostPort != "" && (endPort-startPort) != (endHostPort-startHostPort) {
+			// Allow host port range iff containerPort is not a range.
+			// In this case, use the host port range as the dynamic
+			// host port range to allocate into.
+			if endPort != startPort {
+				return nil, nil, fmt.Errorf("Invalid ranges specified for container and host Ports: %s and %s", containerPort, hostPort)
+			}
+		}
+
+		if !validateProto(strings.ToLower(proto)) {
+			return nil, nil, fmt.Errorf("Invalid proto: %s", proto)
+		}
+
+		for i := uint64(0); i <= (endPort - startPort); i++ {
+			containerPort = strconv.FormatUint(startPort+i, 10)
+			if len(hostPort) > 0 {
+				hostPort = strconv.FormatUint(startHostPort+i, 10)
+			}
+			// Set hostPort to a range only if there is a single container port
+			// and a dynamic host port.
+			if startPort == endPort && startHostPort != endHostPort {
+				hostPort = fmt.Sprintf("%s-%s", hostPort, strconv.FormatUint(endHostPort, 10))
+			}
+			port, err := NewPort(strings.ToLower(proto), containerPort)
+			if err != nil {
+				return nil, nil, err
+			}
+			if _, exists := exposedPorts[port]; !exists {
+				exposedPorts[port] = struct{}{}
+			}
+
+			binding := PortBinding{
+				HostIP:   rawIP,
+				HostPort: hostPort,
+			}
+			bslice, exists := bindings[port]
+			if !exists {
+				bslice = []PortBinding{}
+			}
+			bindings[port] = append(bslice, binding)
+		}
+	}
+	return exposedPorts, bindings, nil
+}

vendor/github.com/docker/go-connections/nat/parse.go

@@ -0,0 +1,56 @@
+package nat
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// PartParser parses and validates the specified string (data) using the specified template
+// e.g. ip:public:private -> 192.168.0.1:80:8000
+func PartParser(template, data string) (map[string]string, error) {
+	// ip:public:private
+	var (
+		templateParts = strings.Split(template, ":")
+		parts         = strings.Split(data, ":")
+		out           = make(map[string]string, len(templateParts))
+	)
+	if len(parts) != len(templateParts) {
+		return nil, fmt.Errorf("Invalid format to parse. %s should match template %s", data, template)
+	}
+
+	for i, t := range templateParts {
+		value := ""
+		if len(parts) > i {
+			value = parts[i]
+		}
+		out[t] = value
+	}
+	return out, nil
+}
+
+// ParsePortRange parses and validates the specified string as a port-range (8000-9000)
+func ParsePortRange(ports string) (uint64, uint64, error) {
+	if ports == "" {
+		return 0, 0, fmt.Errorf("Empty string specified for ports.")
+	}
+	if !strings.Contains(ports, "-") {
+		start, err := strconv.ParseUint(ports, 10, 16)
+		end := start
+		return start, end, err
+	}
+
+	parts := strings.Split(ports, "-")
+	start, err := strconv.ParseUint(parts[0], 10, 16)
+	if err != nil {
+		return 0, 0, err
+	}
+	end, err := strconv.ParseUint(parts[1], 10, 16)
+	if err != nil {
+		return 0, 0, err
+	}
+	if end < start {
+		return 0, 0, fmt.Errorf("Invalid range specified for the Port: %s", ports)
+	}
+	return start, end, nil
+}

vendor/github.com/docker/go-connections/nat/sort.go

@@ -0,0 +1,96 @@
+package nat
+
+import (
+	"sort"
+	"strings"
+)
+
+type portSorter struct {
+	ports []Port
+	by    func(i, j Port) bool
+}
+
+func (s *portSorter) Len() int {
+	return len(s.ports)
+}
+
+func (s *portSorter) Swap(i, j int) {
+	s.ports[i], s.ports[j] = s.ports[j], s.ports[i]
+}
+
+func (s *portSorter) Less(i, j int) bool {
+	ip := s.ports[i]
+	jp := s.ports[j]
+
+	return s.by(ip, jp)
+}
+
+// Sort sorts a list of ports using the provided predicate
+// This function should compare `i` and `j`, returning true if `i` is
+// considered to be less than `j`
+func Sort(ports []Port, predicate func(i, j Port) bool) {
+	s := &portSorter{ports, predicate}
+	sort.Sort(s)
+}
+
+type portMapEntry struct {
+	port    Port
+	binding PortBinding
+}
+
+type portMapSorter []portMapEntry
+
+func (s portMapSorter) Len() int      { return len(s) }
+func (s portMapSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
+
+// sort the port so that the order is:
+// 1. port with larger specified bindings
+// 2. larger port
+// 3. port with tcp protocol
+func (s portMapSorter) Less(i, j int) bool {
+	pi, pj := s[i].port, s[j].port
+	hpi, hpj := toInt(s[i].binding.HostPort), toInt(s[j].binding.HostPort)
+	return hpi > hpj || pi.Int() > pj.Int() || (pi.Int() == pj.Int() && strings.ToLower(pi.Proto()) == "tcp")
+}
+
+// SortPortMap sorts the list of ports and their respected mapping. The ports
+// will explicit HostPort will be placed first.
+func SortPortMap(ports []Port, bindings PortMap) {
+	s := portMapSorter{}
+	for _, p := range ports {
+		if binding, ok := bindings[p]; ok {
+			for _, b := range binding {
+				s = append(s, portMapEntry{port: p, binding: b})
+			}
+			bindings[p] = []PortBinding{}
+		} else {
+			s = append(s, portMapEntry{port: p})
+		}
+	}
+
+	sort.Sort(s)
+	var (
+		i  int
+		pm = make(map[Port]struct{})
+	)
+	// reorder ports
+	for _, entry := range s {
+		if _, ok := pm[entry.port]; !ok {
+			ports[i] = entry.port
+			pm[entry.port] = struct{}{}
+			i++
+		}
+		// reorder bindings for this port
+		if _, ok := bindings[entry.port]; ok {
+			bindings[entry.port] = append(bindings[entry.port], entry.binding)
+		}
+	}
+}
+
+func toInt(s string) uint64 {
+	i, _, err := ParsePortRange(s)
+	if err != nil {
+		i = 0
+	}
+	return i
+}

vendor/github.com/docker/go-units/CONTRIBUTING.md

@@ -0,0 +1,67 @@
+# Contributing to go-units
+
+Want to hack on go-units? Awesome! Here are instructions to get you started.
+
+go-units is a part of the [Docker](https://www.docker.com) project, and follows
+the same rules and principles. If you're already familiar with the way
+Docker does things, you'll feel right at home.
+
+Otherwise, go read Docker's
+[contributions guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md),
+[issue triaging](https://github.com/docker/docker/blob/master/project/ISSUE-TRIAGE.md),
+[review process](https://github.com/docker/docker/blob/master/project/REVIEWING.md) and
+[branches and tags](https://github.com/docker/docker/blob/master/project/BRANCHES-AND-TAGS.md).
+
+### Sign your work
+
+The sign-off is a simple line at the end of the explanation for the patch. Your
+signature certifies that you wrote the patch or otherwise have the right to pass
+it on as an open-source patch. The rules are pretty simple: if you can certify
+the below (from [developercertificate.org](http://developercertificate.org/)):
+
+```
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+660 York Street, Suite 102,
+San Francisco, CA 94110 USA
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
+```
+
+Then you just add a line to every git commit message:
+
+    Signed-off-by: Joe Smith <joe.smith@email.com>
+
+Use your real name (sorry, no pseudonyms or anonymous contributions.)
+
+If you set your `user.name` and `user.email` git configs, you can sign your
+commit automatically with `git commit -s`.

vendor/github.com/docker/go-units/LICENSE.code

@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
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+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
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+          notices within Derivative Works that You distribute, alongside
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+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
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+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2015 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/docker/go-units/LICENSE.docs

@@ -0,0 +1,425 @@
+Attribution-ShareAlike 4.0 International
+
+=======================================================================
+
+Creative Commons Corporation ("Creative Commons") is not a law firm and
+does not provide legal services or legal advice. Distribution of
+Creative Commons public licenses does not create a lawyer-client or
+other relationship. Creative Commons makes its licenses and related
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+warranties regarding its licenses, any material licensed under their
+terms and conditions, or any related information. Creative Commons
+disclaims all liability for damages resulting from their use to the
+fullest extent possible.
+
+Using Creative Commons Public Licenses
+
+Creative Commons public licenses provide a standard set of terms and
+conditions that creators and other rights holders may use to share
+original works of authorship and other material subject to copyright
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+following considerations are for informational purposes only, are not
+exhaustive, and do not form part of our licenses.
+
+     Considerations for licensors: Our public licenses are
+     intended for use by those authorized to give the public
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+     irrevocable. Licensors should read and understand the terms
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+     Licensors should also secure all rights necessary before
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+Section 2 -- Scope.
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+       2. Exceptions and Limitations. For the avoidance of doubt, where
+          Exceptions and Limitations apply to Your use, this Public
+          License does not apply, and You do not need to comply with
+          its terms and conditions.
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+          6(a).
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+          Licensor authorizes You to exercise the Licensed Rights in
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+            a. Offer from the Licensor -- Licensed Material. Every
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+               Every recipient of Adapted Material from You
+               automatically receives an offer from the Licensor to
+               exercise the Licensed Rights in the Adapted Material
+               under the conditions of the Adapter's License You apply.
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+            c. No downstream restrictions. You may not offer or impose
+               any additional or different terms or conditions on, or
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+               Licensed Material if doing so restricts exercise of the
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+               Material.
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+       6. No endorsement. Nothing in this Public License constitutes or
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+  b. Other rights.
+
+       1. Moral rights, such as the right of integrity, are not
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+          the extent possible, the Licensor waives and/or agrees not to
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+          extent necessary to allow You to exercise the Licensed
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+          collect royalties from You for the exercise of the Licensed
+          Rights, whether directly or through a collecting society
+          under any voluntary or waivable statutory or compulsory
+          licensing scheme. In all other cases the Licensor expressly
+          reserves any right to collect such royalties.
+
+
+Section 3 -- License Conditions.
+
+Your exercise of the Licensed Rights is expressly made subject to the
+following conditions.
+
+  a. Attribution.
+
+       1. If You Share the Licensed Material (including in modified
+          form), You must:
+
+            a. retain the following if it is supplied by the Licensor
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+                 i. identification of the creator(s) of the Licensed
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+                    attribution, in any reasonable manner requested by
+                    the Licensor (including by pseudonym if
+                    designated);
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+                ii. a copyright notice;
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+               iii. a notice that refers to this Public License;
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+                    warranties;
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+               retain an indication of any previous modifications; and
+
+            c. indicate the Licensed Material is licensed under this
+               Public License, and include the text of, or the URI or
+               hyperlink to, this Public License.
+
+       2. You may satisfy the conditions in Section 3(a)(1) in any
+          reasonable manner based on the medium, means, and context in
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+          reasonable to satisfy the conditions by providing a URI or
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+
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+
+     In addition to the conditions in Section 3(a), if You Share
+     Adapted Material You produce, the following conditions also apply.
+
+       1. The Adapter's License You apply must be a Creative Commons
+          license with the same License Elements, this version or
+          later, or a BY-SA Compatible License.
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+       2. You must include the text of, or the URI or hyperlink to, the
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+          context in which You Share Adapted Material.
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+       3. You may not offer or impose any additional or different terms
+          or conditions on, or apply any Effective Technological
+          Measures to, Adapted Material that restrict exercise of the
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+  b. if You include all or a substantial portion of the database
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+
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+     all or a substantial portion of the contents of the database.
+
+For the avoidance of doubt, this Section 4 supplements and does not
+replace Your obligations under this Public License where the Licensed
+Rights include other Copyright and Similar Rights.
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+
+Section 5 -- Disclaimer of Warranties and Limitation of Liability.
+
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+     NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
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+
+  c. The disclaimer of warranties and limitation of liability provided
+     above shall be interpreted in a manner that, to the extent
+     possible, most closely approximates an absolute disclaimer and
+     waiver of all liability.
+
+
+Section 6 -- Term and Termination.
+
+  a. This Public License applies for the term of the Copyright and
+     Similar Rights licensed here. However, if You fail to comply with
+     this Public License, then Your rights under this Public License
+     terminate automatically.
+
+  b. Where Your right to use the Licensed Material has terminated under
+     Section 6(a), it reinstates:
+
+       1. automatically as of the date the violation is cured, provided
+          it is cured within 30 days of Your discovery of the
+          violation; or
+
+       2. upon express reinstatement by the Licensor.
+
+     For the avoidance of doubt, this Section 6(b) does not affect any
+     right the Licensor may have to seek remedies for Your violations
+     of this Public License.
+
+  c. For the avoidance of doubt, the Licensor may also offer the
+     Licensed Material under separate terms or conditions or stop
+     distributing the Licensed Material at any time; however, doing so
+     will not terminate this Public License.
+
+  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
+     License.
+
+
+Section 7 -- Other Terms and Conditions.
+
+  a. The Licensor shall not be bound by any additional or different
+     terms or conditions communicated by You unless expressly agreed.
+
+  b. Any arrangements, understandings, or agreements regarding the
+     Licensed Material not stated herein are separate from and
+     independent of the terms and conditions of this Public License.
+
+
+Section 8 -- Interpretation.
+
+  a. For the avoidance of doubt, this Public License does not, and
+     shall not be interpreted to, reduce, limit, restrict, or impose
+     conditions on any use of the Licensed Material that could lawfully
+     be made without permission under this Public License.
+
+  b. To the extent possible, if any provision of this Public License is
+     deemed unenforceable, it shall be automatically reformed to the
+     minimum extent necessary to make it enforceable. If the provision
+     cannot be reformed, it shall be severed from this Public License
+     without affecting the enforceability of the remaining terms and
+     conditions.
+
+  c. No term or condition of this Public License will be waived and no
+     failure to comply consented to unless expressly agreed to by the
+     Licensor.
+
+  d. Nothing in this Public License constitutes or may be interpreted
+     as a limitation upon, or waiver of, any privileges and immunities
+     that apply to the Licensor or You, including from the legal
+     processes of any jurisdiction or authority.
+
+
+=======================================================================
+
+Creative Commons is not a party to its public licenses.
+Notwithstanding, Creative Commons may elect to apply one of its public
+licenses to material it publishes and in those instances will be
+considered the "Licensor." Except for the limited purpose of indicating
+that material is shared under a Creative Commons public license or as
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+understandings, or agreements concerning use of licensed material. For
+the avoidance of doubt, this paragraph does not form part of the public
+licenses.
+
+Creative Commons may be contacted at creativecommons.org.

vendor/github.com/docker/go-units/MAINTAINERS

@@ -0,0 +1,27 @@
+# go-connections maintainers file
+#
+# This file describes who runs the docker/go-connections project and how.
+# This is a living document - if you see something out of date or missing, speak up!
+#
+# It is structured to be consumable by both humans and programs.
+# To extract its contents programmatically, use any TOML-compliant parser.
+#
+# This file is compiled into the MAINTAINERS file in docker/opensource.
+#
+[Org]
+	[Org."Core maintainers"]
+		people = [
+			"calavera",
+		]
+
+[people]
+
+# A reference list of all people associated with the project.
+# All other sections should refer to people by their canonical key
+# in the people section.
+
+	# ADD YOURSELF HERE IN ALPHABETICAL ORDER
+	[people.calavera]
+	Name = "David Calavera"
+	Email = "david.calavera@gmail.com"
+	GitHub = "calavera"

vendor/github.com/docker/go-units/README.md

@@ -0,0 +1,18 @@
+[![GoDoc](https://godoc.org/github.com/docker/go-units?status.svg)](https://godoc.org/github.com/docker/go-units)
+
+# Introduction
+
+go-units is a library to transform human friendly measurements into machine friendly values.
+
+## Usage
+
+See the [docs in godoc](https://godoc.org/github.com/docker/go-units) for examples and documentation.
+
+## Copyright and license
+
+Copyright © 2015 Docker, Inc. All rights reserved, except as follows. Code
+is released under the Apache 2.0 license. The README.md file, and files in the
+"docs" folder are licensed under the Creative Commons Attribution 4.0
+International License under the terms and conditions set forth in the file
+"LICENSE.docs". You may obtain a duplicate copy of the same license, titled
+CC-BY-SA-4.0, at http://creativecommons.org/licenses/by/4.0/.

vendor/github.com/docker/go-units/circle.yml

@@ -0,0 +1,11 @@
+dependencies:
+  post:
+    # install golint
+    - go get github.com/golang/lint/golint
+
+test:
+  pre:
+    # run analysis before tests
+    - go vet ./...
+    - test -z "$(golint ./... | tee /dev/stderr)"
+    - test -z "$(gofmt -s -l . | tee /dev/stderr)"

vendor/github.com/docker/go-units/duration.go

@@ -0,0 +1,33 @@
+// Package units provides helper function to parse and print size and time units
+// in human-readable format.
+package units
+
+import (
+	"fmt"
+	"time"
+)
+
+// HumanDuration returns a human-readable approximation of a duration
+// (eg. "About a minute", "4 hours ago", etc.).
+func HumanDuration(d time.Duration) string {
+	if seconds := int(d.Seconds()); seconds < 1 {
+		return "Less than a second"
+	} else if seconds < 60 {
+		return fmt.Sprintf("%d seconds", seconds)
+	} else if minutes := int(d.Minutes()); minutes == 1 {
+		return "About a minute"
+	} else if minutes < 60 {
+		return fmt.Sprintf("%d minutes", minutes)
+	} else if hours := int(d.Hours()); hours == 1 {
+		return "About an hour"
+	} else if hours < 48 {
+		return fmt.Sprintf("%d hours", hours)
+	} else if hours < 24*7*2 {
+		return fmt.Sprintf("%d days", hours/24)
+	} else if hours < 24*30*3 {
+		return fmt.Sprintf("%d weeks", hours/24/7)
+	} else if hours < 24*365*2 {
+		return fmt.Sprintf("%d months", hours/24/30)
+	}
+	return fmt.Sprintf("%d years", int(d.Hours())/24/365)
+}

vendor/github.com/docker/go-units/size.go

@@ -0,0 +1,95 @@
+package units
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// See: http://en.wikipedia.org/wiki/Binary_prefix
+const (
+	// Decimal
+
+	KB = 1000
+	MB = 1000 * KB
+	GB = 1000 * MB
+	TB = 1000 * GB
+	PB = 1000 * TB
+
+	// Binary
+
+	KiB = 1024
+	MiB = 1024 * KiB
+	GiB = 1024 * MiB
+	TiB = 1024 * GiB
+	PiB = 1024 * TiB
+)
+
+type unitMap map[string]int64
+
+var (
+	decimalMap = unitMap{"k": KB, "m": MB, "g": GB, "t": TB, "p": PB}
+	binaryMap  = unitMap{"k": KiB, "m": MiB, "g": GiB, "t": TiB, "p": PiB}
+	sizeRegex  = regexp.MustCompile(`^(\d+)([kKmMgGtTpP])?[bB]?$`)
+)
+
+var decimapAbbrs = []string{"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
+var binaryAbbrs = []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"}
+
+// CustomSize returns a human-readable approximation of a size
+// using custom format.
+func CustomSize(format string, size float64, base float64, _map []string) string {
+	i := 0
+	for size >= base {
+		size = size / base
+		i++
+	}
+	return fmt.Sprintf(format, size, _map[i])
+}
+
+// HumanSize returns a human-readable approximation of a size
+// capped at 4 valid numbers (eg. "2.746 MB", "796 KB").
+func HumanSize(size float64) string {
+	return CustomSize("%.4g %s", size, 1000.0, decimapAbbrs)
+}
+
+// BytesSize returns a human-readable size in bytes, kibibytes,
+// mebibytes, gibibytes, or tebibytes (eg. "44kiB", "17MiB").
+func BytesSize(size float64) string {
+	return CustomSize("%.4g %s", size, 1024.0, binaryAbbrs)
+}
+
+// FromHumanSize returns an integer from a human-readable specification of a
+// size using SI standard (eg. "44kB", "17MB").
+func FromHumanSize(size string) (int64, error) {
+	return parseSize(size, decimalMap)
+}
+
+// RAMInBytes parses a human-readable string representing an amount of RAM
+// in bytes, kibibytes, mebibytes, gibibytes, or tebibytes and
+// returns the number of bytes, or -1 if the string is unparseable.
+// Units are case-insensitive, and the 'b' suffix is optional.
+func RAMInBytes(size string) (int64, error) {
+	return parseSize(size, binaryMap)
+}
+
+// Parses the human-readable size string into the amount it represents.
+func parseSize(sizeStr string, uMap unitMap) (int64, error) {
+	matches := sizeRegex.FindStringSubmatch(sizeStr)
+	if len(matches) != 3 {
+		return -1, fmt.Errorf("invalid size: '%s'", sizeStr)
+	}
+
+	size, err := strconv.ParseInt(matches[1], 10, 0)
+	if err != nil {
+		return -1, err
+	}
+
+	unitPrefix := strings.ToLower(matches[2])
+	if mul, ok := uMap[unitPrefix]; ok {
+		size *= mul
+	}
+
+	return size, nil
+}

vendor/github.com/docker/go-units/ulimit.go

@@ -0,0 +1,118 @@
+package units
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// Ulimit is a human friendly version of Rlimit.
+type Ulimit struct {
+	Name string
+	Hard int64
+	Soft int64
+}
+
+// Rlimit specifies the resource limits, such as max open files.
+type Rlimit struct {
+	Type int    `json:"type,omitempty"`
+	Hard uint64 `json:"hard,omitempty"`
+	Soft uint64 `json:"soft,omitempty"`
+}
+
+const (
+	// magic numbers for making the syscall
+	// some of these are defined in the syscall package, but not all.
+	// Also since Windows client doesn't get access to the syscall package, need to
+	//	define these here
+	rlimitAs         = 9
+	rlimitCore       = 4
+	rlimitCPU        = 0
+	rlimitData       = 2
+	rlimitFsize      = 1
+	rlimitLocks      = 10
+	rlimitMemlock    = 8
+	rlimitMsgqueue   = 12
+	rlimitNice       = 13
+	rlimitNofile     = 7
+	rlimitNproc      = 6
+	rlimitRss        = 5
+	rlimitRtprio     = 14
+	rlimitRttime     = 15
+	rlimitSigpending = 11
+	rlimitStack      = 3
+)
+
+var ulimitNameMapping = map[string]int{
+	//"as":         rlimitAs, // Disabled since this doesn't seem usable with the way Docker inits a container.
+	"core":       rlimitCore,
+	"cpu":        rlimitCPU,
+	"data":       rlimitData,
+	"fsize":      rlimitFsize,
+	"locks":      rlimitLocks,
+	"memlock":    rlimitMemlock,
+	"msgqueue":   rlimitMsgqueue,
+	"nice":       rlimitNice,
+	"nofile":     rlimitNofile,
+	"nproc":      rlimitNproc,
+	"rss":        rlimitRss,
+	"rtprio":     rlimitRtprio,
+	"rttime":     rlimitRttime,
+	"sigpending": rlimitSigpending,
+	"stack":      rlimitStack,
+}
+
+// ParseUlimit parses and returns a Ulimit from the specified string.
+func ParseUlimit(val string) (*Ulimit, error) {
+	parts := strings.SplitN(val, "=", 2)
+	if len(parts) != 2 {
+		return nil, fmt.Errorf("invalid ulimit argument: %s", val)
+	}
+
+	if _, exists := ulimitNameMapping[parts[0]]; !exists {
+		return nil, fmt.Errorf("invalid ulimit type: %s", parts[0])
+	}
+
+	var (
+		soft int64
+		hard = &soft // default to soft in case no hard was set
+		temp int64
+		err  error
+	)
+	switch limitVals := strings.Split(parts[1], ":"); len(limitVals) {
+	case 2:
+		temp, err = strconv.ParseInt(limitVals[1], 10, 64)
+		if err != nil {
+			return nil, err
+		}
+		hard = &temp
+		fallthrough
+	case 1:
+		soft, err = strconv.ParseInt(limitVals[0], 10, 64)
+		if err != nil {
+			return nil, err
+		}
+	default:
+		return nil, fmt.Errorf("too many limit value arguments - %s, can only have up to two, `soft[:hard]`", parts[1])
+	}
+
+	if soft > *hard {
+		return nil, fmt.Errorf("ulimit soft limit must be less than or equal to hard limit: %d > %d", soft, *hard)
+	}
+
+	return &Ulimit{Name: parts[0], Soft: soft, Hard: *hard}, nil
+}
+
+// GetRlimit returns the RLimit corresponding to Ulimit.
+func (u *Ulimit) GetRlimit() (*Rlimit, error) {
+	t, exists := ulimitNameMapping[u.Name]
+	if !exists {
+		return nil, fmt.Errorf("invalid ulimit name %s", u.Name)
+	}
+
+	return &Rlimit{Type: t, Soft: uint64(u.Soft), Hard: uint64(u.Hard)}, nil
+}
+
+func (u *Ulimit) String() string {
+	return fmt.Sprintf("%s=%d:%d", u.Name, u.Soft, u.Hard)
+}

vendor/github.com/emicklei/go-restful/.gitignore

@@ -0,0 +1,70 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+restful.html
+
+*.out
+
+tmp.prof
+
+go-restful.test
+
+examples/restful-basic-authentication
+
+examples/restful-encoding-filter
+
+examples/restful-filters
+
+examples/restful-hello-world
+
+examples/restful-resource-functions
+
+examples/restful-serve-static
+
+examples/restful-user-service
+
+*.DS_Store
+examples/restful-user-resource
+
+examples/restful-multi-containers
+
+examples/restful-form-handling
+
+examples/restful-CORS-filter
+
+examples/restful-options-filter
+
+examples/restful-curly-router
+
+examples/restful-cpuprofiler-service
+
+examples/restful-pre-post-filters
+
+curly.prof
+
+examples/restful-NCSA-logging
+
+examples/restful-html-template
+
+s.html
+restful-path-tail

vendor/github.com/emicklei/go-restful/CHANGES.md

@@ -0,0 +1,163 @@
+Change history of go-restful
+=
+2016-02-14
+- take the qualify factor of the Accept header mediatype into account when deciding the contentype of the response
+- add constructors for custom entity accessors for xml and json 
+
+2015-09-27
+- rename new WriteStatusAnd... to WriteHeaderAnd... for consistency
+
+2015-09-25
+- fixed problem with changing Header after WriteHeader (issue 235)
+
+2015-09-14
+- changed behavior of WriteHeader (immediate write) and WriteEntity (no status write)
+- added support for custom EntityReaderWriters.
+
+2015-08-06
+- add support for reading entities from compressed request content
+- use sync.Pool for compressors of http response and request body
+- add Description to Parameter for documentation in Swagger UI
+
+2015-03-20
+- add configurable logging
+
+2015-03-18
+- if not specified, the Operation is derived from the Route function
+
+2015-03-17
+- expose Parameter creation functions
+- make trace logger an interface
+- fix OPTIONSFilter
+- customize rendering of ServiceError
+- JSR311 router now handles wildcards
+- add Notes to Route
+
+2014-11-27
+- (api add) PrettyPrint per response. (as proposed in #167)
+
+2014-11-12
+- (api add) ApiVersion(.) for documentation in Swagger UI
+
+2014-11-10
+- (api change) struct fields tagged with "description" show up in Swagger UI
+
+2014-10-31
+- (api change) ReturnsError -> Returns
+- (api add)    RouteBuilder.Do(aBuilder) for DRY use of RouteBuilder
+- fix swagger nested structs
+- sort Swagger response messages by code
+
+2014-10-23
+- (api add) ReturnsError allows you to document Http codes in swagger
+- fixed problem with greedy CurlyRouter
+- (api add) Access-Control-Max-Age in CORS
+- add tracing functionality (injectable) for debugging purposes
+- support JSON parse 64bit int 
+- fix empty parameters for swagger
+- WebServicesUrl is now optional for swagger
+- fixed duplicate AccessControlAllowOrigin in CORS
+- (api change) expose ServeMux in container
+- (api add) added AllowedDomains in CORS
+- (api add) ParameterNamed for detailed documentation
+
+2014-04-16
+- (api add) expose constructor of Request for testing.
+
+2014-06-27
+- (api add) ParameterNamed gives access to a Parameter definition and its data (for further specification).
+- (api add) SetCacheReadEntity allow scontrol over whether or not the request body is being cached (default true for compatibility reasons).
+
+2014-07-03
+- (api add) CORS can be configured with a list of allowed domains
+
+2014-03-12
+- (api add) Route path parameters can use wildcard or regular expressions. (requires CurlyRouter)
+
+2014-02-26
+- (api add) Request now provides information about the matched Route, see method SelectedRoutePath 
+
+2014-02-17
+- (api change) renamed parameter constants (go-lint checks)
+
+2014-01-10
+ - (api add) support for CloseNotify, see http://golang.org/pkg/net/http/#CloseNotifier
+
+2014-01-07
+ - (api change) Write* methods in Response now return the error or nil.
+ - added example of serving HTML from a Go template.
+ - fixed comparing Allowed headers in CORS (is now case-insensitive)
+
+2013-11-13
+ - (api add) Response knows how many bytes are written to the response body.
+
+2013-10-29
+ - (api add) RecoverHandler(handler RecoverHandleFunction) to change how panic recovery is handled. Default behavior is to log and return a stacktrace. This may be a security issue as it exposes sourcecode information.
+
+2013-10-04
+ - (api add) Response knows what HTTP status has been written
+ - (api add) Request can have attributes (map of string->interface, also called request-scoped variables
+
+2013-09-12
+ - (api change) Router interface simplified
+ - Implemented CurlyRouter, a Router that does not use|allow regular expressions in paths
+
+2013-08-05
+ - add OPTIONS support
+ - add CORS support
+
+2013-08-27
+ - fixed some reported issues (see github)
+ - (api change) deprecated use of WriteError; use WriteErrorString instead
+
+2014-04-15
+ - (fix) v1.0.1 tag: fix Issue 111: WriteErrorString
+
+2013-08-08
+ - (api add) Added implementation Container: a WebServices collection with its own http.ServeMux allowing multiple endpoints per program. Existing uses of go-restful will register their services to the DefaultContainer.
+ - (api add) the swagger package has be extended to have a UI per container.
+ - if panic is detected then a small stack trace is printed (thanks to runner-mei)
+ - (api add) WriteErrorString to Response
+
+Important API changes:
+
+ - (api remove) package variable DoNotRecover no longer works ; use restful.DefaultContainer.DoNotRecover(true) instead.
+ - (api remove) package variable EnableContentEncoding no longer works ; use restful.DefaultContainer.EnableContentEncoding(true) instead.
+ 
+ 
+2013-07-06
+
+ - (api add) Added support for response encoding (gzip and deflate(zlib)). This feature is disabled on default (for backwards compatibility). Use restful.EnableContentEncoding = true in your initialization to enable this feature.
+
+2013-06-19
+
+ - (improve) DoNotRecover option, moved request body closer, improved ReadEntity
+
+2013-06-03
+
+ - (api change) removed Dispatcher interface, hide PathExpression
+ - changed receiver names of type functions to be more idiomatic Go
+
+2013-06-02
+
+ - (optimize) Cache the RegExp compilation of Paths.
+
+2013-05-22
+	
+ - (api add) Added support for request/response filter functions
+
+2013-05-18
+
+
+ - (api add) Added feature to change the default Http Request Dispatch function (travis cline)
+ - (api change) Moved Swagger Webservice to swagger package (see example restful-user)
+
+[2012-11-14 .. 2013-05-18>
+ 
+ - See https://github.com/emicklei/go-restful/commits
+
+2012-11-14
+
+ - Initial commit
+
+

vendor/github.com/emicklei/go-restful/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2012,2013 Ernest Micklei
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/emicklei/go-restful/README.md

@@ -0,0 +1,74 @@
+go-restful
+==========
+
+package for building REST-style Web Services using Google Go
+
+REST asks developers to use HTTP methods explicitly and in a way that's consistent with the protocol definition. This basic REST design principle establishes a one-to-one mapping between create, read, update, and delete (CRUD) operations and HTTP methods. According to this mapping:
+
+- GET = Retrieve a representation of a resource
+- POST = Create if you are sending content to the server to create a subordinate of the specified resource collection, using some server-side algorithm.
+- PUT = Create if you are sending the full content of the specified resource (URI).
+- PUT = Update if you are updating the full content of the specified resource.
+- DELETE = Delete if you are requesting the server to delete the resource
+- PATCH = Update partial content of a resource
+- OPTIONS = Get information about the communication options for the request URI
+    
+### Example
+
+```Go
+ws := new(restful.WebService)
+ws.
+	Path("/users").
+	Consumes(restful.MIME_XML, restful.MIME_JSON).
+	Produces(restful.MIME_JSON, restful.MIME_XML)
+
+ws.Route(ws.GET("/{user-id}").To(u.findUser).
+	Doc("get a user").
+	Param(ws.PathParameter("user-id", "identifier of the user").DataType("string")).
+	Writes(User{}))		
+...
+	
+func (u UserResource) findUser(request *restful.Request, response *restful.Response) {
+	id := request.PathParameter("user-id")
+	...
+}
+```
+	
+[Full API of a UserResource](https://github.com/emicklei/go-restful/tree/master/examples/restful-user-resource.go) 
+		
+### Features
+
+- Routes for request → function mapping with path parameter (e.g. {id}) support
+- Configurable router:
+	- Routing algorithm after [JSR311](http://jsr311.java.net/nonav/releases/1.1/spec/spec.html) that is implemented using (but doest **not** accept) regular expressions (See RouterJSR311 which is used by default)
+	- Fast routing algorithm that allows static elements, regular expressions and dynamic parameters in the URL path (e.g. /meetings/{id} or /static/{subpath:*}, See CurlyRouter)
+- Request API for reading structs from JSON/XML and accesing parameters (path,query,header)
+- Response API for writing structs to JSON/XML and setting headers
+- Filters for intercepting the request → response flow on Service or Route level
+- Request-scoped variables using attributes
+- Containers for WebServices on different HTTP endpoints
+- Content encoding (gzip,deflate) of request and response payloads
+- Automatic responses on OPTIONS (using a filter)
+- Automatic CORS request handling (using a filter)
+- API declaration for Swagger UI (see swagger package)
+- Panic recovery to produce HTTP 500, customizable using RecoverHandler(...)
+- Route errors produce HTTP 404/405/406/415 errors, customizable using ServiceErrorHandler(...)
+- Configurable (trace) logging
+- Customizable encoding using EntityReaderWriter registration
+- Customizable gzip/deflate readers and writers using CompressorProvider registration
+	
+### Resources
+
+- [Documentation on godoc.org](http://godoc.org/github.com/emicklei/go-restful)
+- [Code examples](https://github.com/emicklei/go-restful/tree/master/examples)
+- [Example posted on blog](http://ernestmicklei.com/2012/11/24/go-restful-first-working-example/)
+- [Design explained on blog](http://ernestmicklei.com/2012/11/11/go-restful-api-design/)
+- [sourcegraph](https://sourcegraph.com/github.com/emicklei/go-restful)
+- [gopkg.in](https://gopkg.in/emicklei/go-restful.v1)
+- [showcase: Mora - MongoDB REST Api server](https://github.com/emicklei/mora)
+
+[![Build Status](https://drone.io/github.com/emicklei/go-restful/status.png)](https://drone.io/github.com/emicklei/go-restful/latest)
+
+(c) 2012 - 2015, http://ernestmicklei.com. MIT License
+
+Type ```git shortlog -s``` for a full list of contributors.

vendor/github.com/emicklei/go-restful/Srcfile

@@ -0,0 +1 @@
+{"SkipDirs": ["examples"]}

vendor/github.com/emicklei/go-restful/bench_test.sh

@@ -0,0 +1,10 @@
+#go test -run=none -file bench_test.go -test.bench . -cpuprofile=bench_test.out
+
+go test -c
+./go-restful.test -test.run=none -test.cpuprofile=tmp.prof -test.bench=BenchmarkMany
+./go-restful.test -test.run=none -test.cpuprofile=curly.prof -test.bench=BenchmarkManyCurly
+
+#go tool pprof go-restful.test tmp.prof
+go tool pprof go-restful.test curly.prof
+
+

vendor/github.com/emicklei/go-restful/compress.go

@@ -0,0 +1,123 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"bufio"
+	"compress/gzip"
+	"compress/zlib"
+	"errors"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+)
+
+// OBSOLETE : use restful.DefaultContainer.EnableContentEncoding(true) to change this setting.
+var EnableContentEncoding = false
+
+// CompressingResponseWriter is a http.ResponseWriter that can perform content encoding (gzip and zlib)
+type CompressingResponseWriter struct {
+	writer     http.ResponseWriter
+	compressor io.WriteCloser
+	encoding   string
+}
+
+// Header is part of http.ResponseWriter interface
+func (c *CompressingResponseWriter) Header() http.Header {
+	return c.writer.Header()
+}
+
+// WriteHeader is part of http.ResponseWriter interface
+func (c *CompressingResponseWriter) WriteHeader(status int) {
+	c.writer.WriteHeader(status)
+}
+
+// Write is part of http.ResponseWriter interface
+// It is passed through the compressor
+func (c *CompressingResponseWriter) Write(bytes []byte) (int, error) {
+	if c.isCompressorClosed() {
+		return -1, errors.New("Compressing error: tried to write data using closed compressor")
+	}
+	return c.compressor.Write(bytes)
+}
+
+// CloseNotify is part of http.CloseNotifier interface
+func (c *CompressingResponseWriter) CloseNotify() <-chan bool {
+	return c.writer.(http.CloseNotifier).CloseNotify()
+}
+
+// Close the underlying compressor
+func (c *CompressingResponseWriter) Close() error {
+	if c.isCompressorClosed() {
+		return errors.New("Compressing error: tried to close already closed compressor")
+	}
+
+	c.compressor.Close()
+	if ENCODING_GZIP == c.encoding {
+		currentCompressorProvider.ReleaseGzipWriter(c.compressor.(*gzip.Writer))
+	}
+	if ENCODING_DEFLATE == c.encoding {
+		currentCompressorProvider.ReleaseZlibWriter(c.compressor.(*zlib.Writer))
+	}
+	// gc hint needed?
+	c.compressor = nil
+	return nil
+}
+
+func (c *CompressingResponseWriter) isCompressorClosed() bool {
+	return nil == c.compressor
+}
+
+// Hijack implements the Hijacker interface
+// This is especially useful when combining Container.EnabledContentEncoding
+// in combination with websockets (for instance gorilla/websocket)
+func (c *CompressingResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	hijacker, ok := c.writer.(http.Hijacker)
+	if !ok {
+		return nil, nil, errors.New("ResponseWriter doesn't support Hijacker interface")
+	}
+	return hijacker.Hijack()
+}
+
+// WantsCompressedResponse reads the Accept-Encoding header to see if and which encoding is requested.
+func wantsCompressedResponse(httpRequest *http.Request) (bool, string) {
+	header := httpRequest.Header.Get(HEADER_AcceptEncoding)
+	gi := strings.Index(header, ENCODING_GZIP)
+	zi := strings.Index(header, ENCODING_DEFLATE)
+	// use in order of appearance
+	if gi == -1 {
+		return zi != -1, ENCODING_DEFLATE
+	} else if zi == -1 {
+		return gi != -1, ENCODING_GZIP
+	} else {
+		if gi < zi {
+			return true, ENCODING_GZIP
+		}
+		return true, ENCODING_DEFLATE
+	}
+}
+
+// NewCompressingResponseWriter create a CompressingResponseWriter for a known encoding = {gzip,deflate}
+func NewCompressingResponseWriter(httpWriter http.ResponseWriter, encoding string) (*CompressingResponseWriter, error) {
+	httpWriter.Header().Set(HEADER_ContentEncoding, encoding)
+	c := new(CompressingResponseWriter)
+	c.writer = httpWriter
+	var err error
+	if ENCODING_GZIP == encoding {
+		w := currentCompressorProvider.AcquireGzipWriter()
+		w.Reset(httpWriter)
+		c.compressor = w
+		c.encoding = ENCODING_GZIP
+	} else if ENCODING_DEFLATE == encoding {
+		w := currentCompressorProvider.AcquireZlibWriter()
+		w.Reset(httpWriter)
+		c.compressor = w
+		c.encoding = ENCODING_DEFLATE
+	} else {
+		return nil, errors.New("Unknown encoding:" + encoding)
+	}
+	return c, err
+}

vendor/github.com/emicklei/go-restful/compressor_cache.go

@@ -0,0 +1,103 @@
+package restful
+
+// Copyright 2015 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"compress/gzip"
+	"compress/zlib"
+)
+
+// BoundedCachedCompressors is a CompressorProvider that uses a cache with a fixed amount
+// of writers and readers (resources).
+// If a new resource is acquired and all are in use, it will return a new unmanaged resource.
+type BoundedCachedCompressors struct {
+	gzipWriters     chan *gzip.Writer
+	gzipReaders     chan *gzip.Reader
+	zlibWriters     chan *zlib.Writer
+	writersCapacity int
+	readersCapacity int
+}
+
+// NewBoundedCachedCompressors returns a new, with filled cache,  BoundedCachedCompressors.
+func NewBoundedCachedCompressors(writersCapacity, readersCapacity int) *BoundedCachedCompressors {
+	b := &BoundedCachedCompressors{
+		gzipWriters:     make(chan *gzip.Writer, writersCapacity),
+		gzipReaders:     make(chan *gzip.Reader, readersCapacity),
+		zlibWriters:     make(chan *zlib.Writer, writersCapacity),
+		writersCapacity: writersCapacity,
+		readersCapacity: readersCapacity,
+	}
+	for ix := 0; ix < writersCapacity; ix++ {
+		b.gzipWriters <- newGzipWriter()
+		b.zlibWriters <- newZlibWriter()
+	}
+	for ix := 0; ix < readersCapacity; ix++ {
+		b.gzipReaders <- newGzipReader()
+	}
+	return b
+}
+
+// AcquireGzipWriter returns an resettable *gzip.Writer. Needs to be released.
+func (b *BoundedCachedCompressors) AcquireGzipWriter() *gzip.Writer {
+	var writer *gzip.Writer
+	select {
+	case writer, _ = <-b.gzipWriters:
+	default:
+		// return a new unmanaged one
+		writer = newGzipWriter()
+	}
+	return writer
+}
+
+// ReleaseGzipWriter accepts a writer (does not have to be one that was cached)
+// only when the cache has room for it. It will ignore it otherwise.
+func (b *BoundedCachedCompressors) ReleaseGzipWriter(w *gzip.Writer) {
+	// forget the unmanaged ones
+	if len(b.gzipWriters) < b.writersCapacity {
+		b.gzipWriters <- w
+	}
+}
+
+// AcquireGzipReader returns a *gzip.Reader. Needs to be released.
+func (b *BoundedCachedCompressors) AcquireGzipReader() *gzip.Reader {
+	var reader *gzip.Reader
+	select {
+	case reader, _ = <-b.gzipReaders:
+	default:
+		// return a new unmanaged one
+		reader = newGzipReader()
+	}
+	return reader
+}
+
+// ReleaseGzipReader accepts a reader (does not have to be one that was cached)
+// only when the cache has room for it. It will ignore it otherwise.
+func (b *BoundedCachedCompressors) ReleaseGzipReader(r *gzip.Reader) {
+	// forget the unmanaged ones
+	if len(b.gzipReaders) < b.readersCapacity {
+		b.gzipReaders <- r
+	}
+}
+
+// AcquireZlibWriter returns an resettable *zlib.Writer. Needs to be released.
+func (b *BoundedCachedCompressors) AcquireZlibWriter() *zlib.Writer {
+	var writer *zlib.Writer
+	select {
+	case writer, _ = <-b.zlibWriters:
+	default:
+		// return a new unmanaged one
+		writer = newZlibWriter()
+	}
+	return writer
+}
+
+// ReleaseZlibWriter accepts a writer (does not have to be one that was cached)
+// only when the cache has room for it. It will ignore it otherwise.
+func (b *BoundedCachedCompressors) ReleaseZlibWriter(w *zlib.Writer) {
+	// forget the unmanaged ones
+	if len(b.zlibWriters) < b.writersCapacity {
+		b.zlibWriters <- w
+	}
+}

vendor/github.com/emicklei/go-restful/compressor_pools.go

@@ -0,0 +1,91 @@
+package restful
+
+// Copyright 2015 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"bytes"
+	"compress/gzip"
+	"compress/zlib"
+	"sync"
+)
+
+// SyncPoolCompessors is a CompressorProvider that use the standard sync.Pool.
+type SyncPoolCompessors struct {
+	GzipWriterPool *sync.Pool
+	GzipReaderPool *sync.Pool
+	ZlibWriterPool *sync.Pool
+}
+
+// NewSyncPoolCompessors returns a new ("empty") SyncPoolCompessors.
+func NewSyncPoolCompessors() *SyncPoolCompessors {
+	return &SyncPoolCompessors{
+		GzipWriterPool: &sync.Pool{
+			New: func() interface{} { return newGzipWriter() },
+		},
+		GzipReaderPool: &sync.Pool{
+			New: func() interface{} { return newGzipReader() },
+		},
+		ZlibWriterPool: &sync.Pool{
+			New: func() interface{} { return newZlibWriter() },
+		},
+	}
+}
+
+func (s *SyncPoolCompessors) AcquireGzipWriter() *gzip.Writer {
+	return s.GzipWriterPool.Get().(*gzip.Writer)
+}
+
+func (s *SyncPoolCompessors) ReleaseGzipWriter(w *gzip.Writer) {
+	s.GzipWriterPool.Put(w)
+}
+
+func (s *SyncPoolCompessors) AcquireGzipReader() *gzip.Reader {
+	return s.GzipReaderPool.Get().(*gzip.Reader)
+}
+
+func (s *SyncPoolCompessors) ReleaseGzipReader(r *gzip.Reader) {
+	s.GzipReaderPool.Put(r)
+}
+
+func (s *SyncPoolCompessors) AcquireZlibWriter() *zlib.Writer {
+	return s.ZlibWriterPool.Get().(*zlib.Writer)
+}
+
+func (s *SyncPoolCompessors) ReleaseZlibWriter(w *zlib.Writer) {
+	s.ZlibWriterPool.Put(w)
+}
+
+func newGzipWriter() *gzip.Writer {
+	// create with an empty bytes writer; it will be replaced before using the gzipWriter
+	writer, err := gzip.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
+	if err != nil {
+		panic(err.Error())
+	}
+	return writer
+}
+
+func newGzipReader() *gzip.Reader {
+	// create with an empty reader (but with GZIP header); it will be replaced before using the gzipReader
+	// we can safely use currentCompressProvider because it is set on package initialization.
+	w := currentCompressorProvider.AcquireGzipWriter()
+	defer currentCompressorProvider.ReleaseGzipWriter(w)
+	b := new(bytes.Buffer)
+	w.Reset(b)
+	w.Flush()
+	w.Close()
+	reader, err := gzip.NewReader(bytes.NewReader(b.Bytes()))
+	if err != nil {
+		panic(err.Error())
+	}
+	return reader
+}
+
+func newZlibWriter() *zlib.Writer {
+	writer, err := zlib.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
+	if err != nil {
+		panic(err.Error())
+	}
+	return writer
+}

vendor/github.com/emicklei/go-restful/compressors.go

@@ -0,0 +1,53 @@
+package restful
+
+// Copyright 2015 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"compress/gzip"
+	"compress/zlib"
+)
+
+type CompressorProvider interface {
+	// Returns a *gzip.Writer which needs to be released later.
+	// Before using it, call Reset().
+	AcquireGzipWriter() *gzip.Writer
+
+	// Releases an aqcuired *gzip.Writer.
+	ReleaseGzipWriter(w *gzip.Writer)
+
+	// Returns a *gzip.Reader which needs to be released later.
+	AcquireGzipReader() *gzip.Reader
+
+	// Releases an aqcuired *gzip.Reader.
+	ReleaseGzipReader(w *gzip.Reader)
+
+	// Returns a *zlib.Writer which needs to be released later.
+	// Before using it, call Reset().
+	AcquireZlibWriter() *zlib.Writer
+
+	// Releases an aqcuired *zlib.Writer.
+	ReleaseZlibWriter(w *zlib.Writer)
+}
+
+// DefaultCompressorProvider is the actual provider of compressors (zlib or gzip).
+var currentCompressorProvider CompressorProvider
+
+func init() {
+	currentCompressorProvider = NewSyncPoolCompessors()
+}
+
+// CurrentCompressorProvider returns the current CompressorProvider.
+// It is initialized using a SyncPoolCompessors.
+func CurrentCompressorProvider() CompressorProvider {
+	return currentCompressorProvider
+}
+
+// CompressorProvider sets the actual provider of compressors (zlib or gzip).
+func SetCompressorProvider(p CompressorProvider) {
+	if p == nil {
+		panic("cannot set compressor provider to nil")
+	}
+	currentCompressorProvider = p
+}

vendor/github.com/emicklei/go-restful/constants.go

@@ -0,0 +1,30 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+const (
+	MIME_XML   = "application/xml"          // Accept or Content-Type used in Consumes() and/or Produces()
+	MIME_JSON  = "application/json"         // Accept or Content-Type used in Consumes() and/or Produces()
+	MIME_OCTET = "application/octet-stream" // If Content-Type is not present in request, use the default
+
+	HEADER_Allow                         = "Allow"
+	HEADER_Accept                        = "Accept"
+	HEADER_Origin                        = "Origin"
+	HEADER_ContentType                   = "Content-Type"
+	HEADER_LastModified                  = "Last-Modified"
+	HEADER_AcceptEncoding                = "Accept-Encoding"
+	HEADER_ContentEncoding               = "Content-Encoding"
+	HEADER_AccessControlExposeHeaders    = "Access-Control-Expose-Headers"
+	HEADER_AccessControlRequestMethod    = "Access-Control-Request-Method"
+	HEADER_AccessControlRequestHeaders   = "Access-Control-Request-Headers"
+	HEADER_AccessControlAllowMethods     = "Access-Control-Allow-Methods"
+	HEADER_AccessControlAllowOrigin      = "Access-Control-Allow-Origin"
+	HEADER_AccessControlAllowCredentials = "Access-Control-Allow-Credentials"
+	HEADER_AccessControlAllowHeaders     = "Access-Control-Allow-Headers"
+	HEADER_AccessControlMaxAge           = "Access-Control-Max-Age"
+
+	ENCODING_GZIP    = "gzip"
+	ENCODING_DEFLATE = "deflate"
+)

vendor/github.com/emicklei/go-restful/container.go

@@ -0,0 +1,338 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+	"os"
+	"runtime"
+	"strings"
+	"sync"
+
+	"github.com/emicklei/go-restful/log"
+)
+
+// Container holds a collection of WebServices and a http.ServeMux to dispatch http requests.
+// The requests are further dispatched to routes of WebServices using a RouteSelector
+type Container struct {
+	webServicesLock        sync.RWMutex
+	webServices            []*WebService
+	ServeMux               *http.ServeMux
+	isRegisteredOnRoot     bool
+	containerFilters       []FilterFunction
+	doNotRecover           bool // default is false
+	recoverHandleFunc      RecoverHandleFunction
+	serviceErrorHandleFunc ServiceErrorHandleFunction
+	router                 RouteSelector // default is a RouterJSR311, CurlyRouter is the faster alternative
+	contentEncodingEnabled bool          // default is false
+}
+
+// NewContainer creates a new Container using a new ServeMux and default router (RouterJSR311)
+func NewContainer() *Container {
+	return &Container{
+		webServices:            []*WebService{},
+		ServeMux:               http.NewServeMux(),
+		isRegisteredOnRoot:     false,
+		containerFilters:       []FilterFunction{},
+		doNotRecover:           false,
+		recoverHandleFunc:      logStackOnRecover,
+		serviceErrorHandleFunc: writeServiceError,
+		router:                 RouterJSR311{},
+		contentEncodingEnabled: false}
+}
+
+// RecoverHandleFunction declares functions that can be used to handle a panic situation.
+// The first argument is what recover() returns. The second must be used to communicate an error response.
+type RecoverHandleFunction func(interface{}, http.ResponseWriter)
+
+// RecoverHandler changes the default function (logStackOnRecover) to be called
+// when a panic is detected. DoNotRecover must be have its default value (=false).
+func (c *Container) RecoverHandler(handler RecoverHandleFunction) {
+	c.recoverHandleFunc = handler
+}
+
+// ServiceErrorHandleFunction declares functions that can be used to handle a service error situation.
+// The first argument is the service error, the second is the request that resulted in the error and
+// the third must be used to communicate an error response.
+type ServiceErrorHandleFunction func(ServiceError, *Request, *Response)
+
+// ServiceErrorHandler changes the default function (writeServiceError) to be called
+// when a ServiceError is detected.
+func (c *Container) ServiceErrorHandler(handler ServiceErrorHandleFunction) {
+	c.serviceErrorHandleFunc = handler
+}
+
+// DoNotRecover controls whether panics will be caught to return HTTP 500.
+// If set to true, Route functions are responsible for handling any error situation.
+// Default value is false = recover from panics. This has performance implications.
+func (c *Container) DoNotRecover(doNot bool) {
+	c.doNotRecover = doNot
+}
+
+// Router changes the default Router (currently RouterJSR311)
+func (c *Container) Router(aRouter RouteSelector) {
+	c.router = aRouter
+}
+
+// EnableContentEncoding (default=false) allows for GZIP or DEFLATE encoding of responses.
+func (c *Container) EnableContentEncoding(enabled bool) {
+	c.contentEncodingEnabled = enabled
+}
+
+// Add a WebService to the Container. It will detect duplicate root paths and panic in that case.
+func (c *Container) Add(service *WebService) *Container {
+	c.webServicesLock.Lock()
+	defer c.webServicesLock.Unlock()
+	// If registered on root then no additional specific mapping is needed
+	if !c.isRegisteredOnRoot {
+		pattern := c.fixedPrefixPath(service.RootPath())
+		// check if root path registration is needed
+		if "/" == pattern || "" == pattern {
+			c.ServeMux.HandleFunc("/", c.dispatch)
+			c.isRegisteredOnRoot = true
+		} else {
+			// detect if registration already exists
+			alreadyMapped := false
+			for _, each := range c.webServices {
+				if each.RootPath() == service.RootPath() {
+					alreadyMapped = true
+					break
+				}
+			}
+			if !alreadyMapped {
+				c.ServeMux.HandleFunc(pattern, c.dispatch)
+				if !strings.HasSuffix(pattern, "/") {
+					c.ServeMux.HandleFunc(pattern+"/", c.dispatch)
+				}
+			}
+		}
+	}
+	// cannot have duplicate root paths
+	for _, each := range c.webServices {
+		if each.RootPath() == service.RootPath() {
+			log.Printf("[restful] WebService with duplicate root path detected:['%v']", each)
+			os.Exit(1)
+		}
+	}
+	// if rootPath was not set then lazy initialize it
+	if len(service.rootPath) == 0 {
+		service.Path("/")
+	}
+	c.webServices = append(c.webServices, service)
+	return c
+}
+
+func (c *Container) Remove(ws *WebService) error {
+	c.webServicesLock.Lock()
+	defer c.webServicesLock.Unlock()
+	newServices := []*WebService{}
+	for ix := range c.webServices {
+		if c.webServices[ix].rootPath != ws.rootPath {
+			newServices = append(newServices, c.webServices[ix])
+		}
+	}
+	c.webServices = newServices
+	return nil
+}
+
+// logStackOnRecover is the default RecoverHandleFunction and is called
+// when DoNotRecover is false and the recoverHandleFunc is not set for the container.
+// Default implementation logs the stacktrace and writes the stacktrace on the response.
+// This may be a security issue as it exposes sourcecode information.
+func logStackOnRecover(panicReason interface{}, httpWriter http.ResponseWriter) {
+	var buffer bytes.Buffer
+	buffer.WriteString(fmt.Sprintf("[restful] recover from panic situation: - %v\r\n", panicReason))
+	for i := 2; ; i += 1 {
+		_, file, line, ok := runtime.Caller(i)
+		if !ok {
+			break
+		}
+		buffer.WriteString(fmt.Sprintf("    %s:%d\r\n", file, line))
+	}
+	log.Print(buffer.String())
+	httpWriter.WriteHeader(http.StatusInternalServerError)
+	httpWriter.Write(buffer.Bytes())
+}
+
+// writeServiceError is the default ServiceErrorHandleFunction and is called
+// when a ServiceError is returned during route selection. Default implementation
+// calls resp.WriteErrorString(err.Code, err.Message)
+func writeServiceError(err ServiceError, req *Request, resp *Response) {
+	resp.WriteErrorString(err.Code, err.Message)
+}
+
+// Dispatch the incoming Http Request to a matching WebService.
+func (c *Container) dispatch(httpWriter http.ResponseWriter, httpRequest *http.Request) {
+	writer := httpWriter
+
+	// CompressingResponseWriter should be closed after all operations are done
+	defer func() {
+		if compressWriter, ok := writer.(*CompressingResponseWriter); ok {
+			compressWriter.Close()
+		}
+	}()
+
+	// Instal panic recovery unless told otherwise
+	if !c.doNotRecover { // catch all for 500 response
+		defer func() {
+			if r := recover(); r != nil {
+				c.recoverHandleFunc(r, writer)
+				return
+			}
+		}()
+	}
+	// Install closing the request body (if any)
+	defer func() {
+		if nil != httpRequest.Body {
+			httpRequest.Body.Close()
+		}
+	}()
+
+	// Detect if compression is needed
+	// assume without compression, test for override
+	if c.contentEncodingEnabled {
+		doCompress, encoding := wantsCompressedResponse(httpRequest)
+		if doCompress {
+			var err error
+			writer, err = NewCompressingResponseWriter(httpWriter, encoding)
+			if err != nil {
+				log.Print("[restful] unable to install compressor: ", err)
+				httpWriter.WriteHeader(http.StatusInternalServerError)
+				return
+			}
+		}
+	}
+	// Find best match Route ; err is non nil if no match was found
+	var webService *WebService
+	var route *Route
+	var err error
+	func() {
+		c.webServicesLock.RLock()
+		defer c.webServicesLock.RUnlock()
+		webService, route, err = c.router.SelectRoute(
+			c.webServices,
+			httpRequest)
+	}()
+	if err != nil {
+		// a non-200 response has already been written
+		// run container filters anyway ; they should not touch the response...
+		chain := FilterChain{Filters: c.containerFilters, Target: func(req *Request, resp *Response) {
+			switch err.(type) {
+			case ServiceError:
+				ser := err.(ServiceError)
+				c.serviceErrorHandleFunc(ser, req, resp)
+			}
+			// TODO
+		}}
+		chain.ProcessFilter(NewRequest(httpRequest), NewResponse(writer))
+		return
+	}
+	wrappedRequest, wrappedResponse := route.wrapRequestResponse(writer, httpRequest)
+	// pass through filters (if any)
+	if len(c.containerFilters)+len(webService.filters)+len(route.Filters) > 0 {
+		// compose filter chain
+		allFilters := []FilterFunction{}
+		allFilters = append(allFilters, c.containerFilters...)
+		allFilters = append(allFilters, webService.filters...)
+		allFilters = append(allFilters, route.Filters...)
+		chain := FilterChain{Filters: allFilters, Target: func(req *Request, resp *Response) {
+			// handle request by route after passing all filters
+			route.Function(wrappedRequest, wrappedResponse)
+		}}
+		chain.ProcessFilter(wrappedRequest, wrappedResponse)
+	} else {
+		// no filters, handle request by route
+		route.Function(wrappedRequest, wrappedResponse)
+	}
+}
+
+// fixedPrefixPath returns the fixed part of the partspec ; it may include template vars {}
+func (c Container) fixedPrefixPath(pathspec string) string {
+	varBegin := strings.Index(pathspec, "{")
+	if -1 == varBegin {
+		return pathspec
+	}
+	return pathspec[:varBegin]
+}
+
+// ServeHTTP implements net/http.Handler therefore a Container can be a Handler in a http.Server
+func (c Container) ServeHTTP(httpwriter http.ResponseWriter, httpRequest *http.Request) {
+	c.ServeMux.ServeHTTP(httpwriter, httpRequest)
+}
+
+// Handle registers the handler for the given pattern. If a handler already exists for pattern, Handle panics.
+func (c Container) Handle(pattern string, handler http.Handler) {
+	c.ServeMux.Handle(pattern, handler)
+}
+
+// HandleWithFilter registers the handler for the given pattern.
+// Container's filter chain is applied for handler.
+// If a handler already exists for pattern, HandleWithFilter panics.
+func (c *Container) HandleWithFilter(pattern string, handler http.Handler) {
+	f := func(httpResponse http.ResponseWriter, httpRequest *http.Request) {
+		if len(c.containerFilters) == 0 {
+			handler.ServeHTTP(httpResponse, httpRequest)
+			return
+		}
+
+		chain := FilterChain{Filters: c.containerFilters, Target: func(req *Request, resp *Response) {
+			handler.ServeHTTP(httpResponse, httpRequest)
+		}}
+		chain.ProcessFilter(NewRequest(httpRequest), NewResponse(httpResponse))
+	}
+
+	c.Handle(pattern, http.HandlerFunc(f))
+}
+
+// Filter appends a container FilterFunction. These are called before dispatching
+// a http.Request to a WebService from the container
+func (c *Container) Filter(filter FilterFunction) {
+	c.containerFilters = append(c.containerFilters, filter)
+}
+
+// RegisteredWebServices returns the collections of added WebServices
+func (c Container) RegisteredWebServices() []*WebService {
+	c.webServicesLock.RLock()
+	defer c.webServicesLock.RUnlock()
+	result := make([]*WebService, len(c.webServices))
+	for ix := range c.webServices {
+		result[ix] = c.webServices[ix]
+	}
+	return result
+}
+
+// computeAllowedMethods returns a list of HTTP methods that are valid for a Request
+func (c Container) computeAllowedMethods(req *Request) []string {
+	// Go through all RegisteredWebServices() and all its Routes to collect the options
+	methods := []string{}
+	requestPath := req.Request.URL.Path
+	for _, ws := range c.RegisteredWebServices() {
+		matches := ws.pathExpr.Matcher.FindStringSubmatch(requestPath)
+		if matches != nil {
+			finalMatch := matches[len(matches)-1]
+			for _, rt := range ws.Routes() {
+				matches := rt.pathExpr.Matcher.FindStringSubmatch(finalMatch)
+				if matches != nil {
+					lastMatch := matches[len(matches)-1]
+					if lastMatch == "" || lastMatch == "/" { // do not include if value is neither empty nor ‘/’.
+						methods = append(methods, rt.Method)
+					}
+				}
+			}
+		}
+	}
+	// methods = append(methods, "OPTIONS")  not sure about this
+	return methods
+}
+
+// newBasicRequestResponse creates a pair of Request,Response from its http versions.
+// It is basic because no parameter or (produces) content-type information is given.
+func newBasicRequestResponse(httpWriter http.ResponseWriter, httpRequest *http.Request) (*Request, *Response) {
+	resp := NewResponse(httpWriter)
+	resp.requestAccept = httpRequest.Header.Get(HEADER_Accept)
+	return NewRequest(httpRequest), resp
+}

vendor/github.com/emicklei/go-restful/cors_filter.go

@@ -0,0 +1,176 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"strconv"
+	"strings"
+)
+
+// CrossOriginResourceSharing is used to create a Container Filter that implements CORS.
+// Cross-origin resource sharing (CORS) is a mechanism that allows JavaScript on a web page
+// to make XMLHttpRequests to another domain, not the domain the JavaScript originated from.
+//
+// http://en.wikipedia.org/wiki/Cross-origin_resource_sharing
+// http://enable-cors.org/server.html
+// http://www.html5rocks.com/en/tutorials/cors/#toc-handling-a-not-so-simple-request
+type CrossOriginResourceSharing struct {
+	ExposeHeaders  []string // list of Header names
+	AllowedHeaders []string // list of Header names
+	AllowedDomains []string // list of allowed values for Http Origin. If empty all are allowed.
+	AllowedMethods []string
+	MaxAge         int // number of seconds before requiring new Options request
+	CookiesAllowed bool
+	Container      *Container
+}
+
+// Filter is a filter function that implements the CORS flow as documented on http://enable-cors.org/server.html
+// and http://www.html5rocks.com/static/images/cors_server_flowchart.png
+func (c CrossOriginResourceSharing) Filter(req *Request, resp *Response, chain *FilterChain) {
+	origin := req.Request.Header.Get(HEADER_Origin)
+	if len(origin) == 0 {
+		if trace {
+			traceLogger.Print("no Http header Origin set")
+		}
+		chain.ProcessFilter(req, resp)
+		return
+	}
+	if len(c.AllowedDomains) > 0 { // if provided then origin must be included
+		included := false
+		for _, each := range c.AllowedDomains {
+			if each == origin {
+				included = true
+				break
+			}
+		}
+		if !included {
+			if trace {
+				traceLogger.Printf("HTTP Origin:%s is not part of %v", origin, c.AllowedDomains)
+			}
+			chain.ProcessFilter(req, resp)
+			return
+		}
+	}
+	if req.Request.Method != "OPTIONS" {
+		c.doActualRequest(req, resp)
+		chain.ProcessFilter(req, resp)
+		return
+	}
+	if acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod); acrm != "" {
+		c.doPreflightRequest(req, resp)
+	} else {
+		c.doActualRequest(req, resp)
+		chain.ProcessFilter(req, resp)
+		return
+	}
+}
+
+func (c CrossOriginResourceSharing) doActualRequest(req *Request, resp *Response) {
+	c.setOptionsHeaders(req, resp)
+	// continue processing the response
+}
+
+func (c *CrossOriginResourceSharing) doPreflightRequest(req *Request, resp *Response) {
+	if len(c.AllowedMethods) == 0 {
+		if c.Container == nil {
+			c.AllowedMethods = DefaultContainer.computeAllowedMethods(req)
+		} else {
+			c.AllowedMethods = c.Container.computeAllowedMethods(req)
+		}
+	}
+
+	acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod)
+	if !c.isValidAccessControlRequestMethod(acrm, c.AllowedMethods) {
+		if trace {
+			traceLogger.Printf("Http header %s:%s is not in %v",
+				HEADER_AccessControlRequestMethod,
+				acrm,
+				c.AllowedMethods)
+		}
+		return
+	}
+	acrhs := req.Request.Header.Get(HEADER_AccessControlRequestHeaders)
+	if len(acrhs) > 0 {
+		for _, each := range strings.Split(acrhs, ",") {
+			if !c.isValidAccessControlRequestHeader(strings.Trim(each, " ")) {
+				if trace {
+					traceLogger.Printf("Http header %s:%s is not in %v",
+						HEADER_AccessControlRequestHeaders,
+						acrhs,
+						c.AllowedHeaders)
+				}
+				return
+			}
+		}
+	}
+	resp.AddHeader(HEADER_AccessControlAllowMethods, strings.Join(c.AllowedMethods, ","))
+	resp.AddHeader(HEADER_AccessControlAllowHeaders, acrhs)
+	c.setOptionsHeaders(req, resp)
+
+	// return http 200 response, no body
+}
+
+func (c CrossOriginResourceSharing) setOptionsHeaders(req *Request, resp *Response) {
+	c.checkAndSetExposeHeaders(resp)
+	c.setAllowOriginHeader(req, resp)
+	c.checkAndSetAllowCredentials(resp)
+	if c.MaxAge > 0 {
+		resp.AddHeader(HEADER_AccessControlMaxAge, strconv.Itoa(c.MaxAge))
+	}
+}
+
+func (c CrossOriginResourceSharing) isOriginAllowed(origin string) bool {
+	if len(origin) == 0 {
+		return false
+	}
+	if len(c.AllowedDomains) == 0 {
+		return true
+	}
+	allowed := false
+	for _, each := range c.AllowedDomains {
+		if each == origin {
+			allowed = true
+			break
+		}
+	}
+	return allowed
+}
+
+func (c CrossOriginResourceSharing) setAllowOriginHeader(req *Request, resp *Response) {
+	origin := req.Request.Header.Get(HEADER_Origin)
+	if c.isOriginAllowed(origin) {
+		resp.AddHeader(HEADER_AccessControlAllowOrigin, origin)
+	}
+}
+
+func (c CrossOriginResourceSharing) checkAndSetExposeHeaders(resp *Response) {
+	if len(c.ExposeHeaders) > 0 {
+		resp.AddHeader(HEADER_AccessControlExposeHeaders, strings.Join(c.ExposeHeaders, ","))
+	}
+}
+
+func (c CrossOriginResourceSharing) checkAndSetAllowCredentials(resp *Response) {
+	if c.CookiesAllowed {
+		resp.AddHeader(HEADER_AccessControlAllowCredentials, "true")
+	}
+}
+
+func (c CrossOriginResourceSharing) isValidAccessControlRequestMethod(method string, allowedMethods []string) bool {
+	for _, each := range allowedMethods {
+		if each == method {
+			return true
+		}
+	}
+	return false
+}
+
+func (c CrossOriginResourceSharing) isValidAccessControlRequestHeader(header string) bool {
+	for _, each := range c.AllowedHeaders {
+		if strings.ToLower(each) == strings.ToLower(header) {
+			return true
+		}
+	}
+	return false
+}

vendor/github.com/emicklei/go-restful/coverage.sh

@@ -0,0 +1,2 @@
+go test -coverprofile=coverage.out
+go tool cover -html=coverage.out

vendor/github.com/emicklei/go-restful/curly.go

@@ -0,0 +1,162 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"net/http"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+// CurlyRouter expects Routes with paths that contain zero or more parameters in curly brackets.
+type CurlyRouter struct{}
+
+// SelectRoute is part of the Router interface and returns the best match
+// for the WebService and its Route for the given Request.
+func (c CurlyRouter) SelectRoute(
+	webServices []*WebService,
+	httpRequest *http.Request) (selectedService *WebService, selected *Route, err error) {
+
+	requestTokens := tokenizePath(httpRequest.URL.Path)
+
+	detectedService := c.detectWebService(requestTokens, webServices)
+	if detectedService == nil {
+		if trace {
+			traceLogger.Printf("no WebService was found to match URL path:%s\n", httpRequest.URL.Path)
+		}
+		return nil, nil, NewError(http.StatusNotFound, "404: Page Not Found")
+	}
+	candidateRoutes := c.selectRoutes(detectedService, requestTokens)
+	if len(candidateRoutes) == 0 {
+		if trace {
+			traceLogger.Printf("no Route in WebService with path %s was found to match URL path:%s\n", detectedService.rootPath, httpRequest.URL.Path)
+		}
+		return detectedService, nil, NewError(http.StatusNotFound, "404: Page Not Found")
+	}
+	selectedRoute, err := c.detectRoute(candidateRoutes, httpRequest)
+	if selectedRoute == nil {
+		return detectedService, nil, err
+	}
+	return detectedService, selectedRoute, nil
+}
+
+// selectRoutes return a collection of Route from a WebService that matches the path tokens from the request.
+func (c CurlyRouter) selectRoutes(ws *WebService, requestTokens []string) []Route {
+	candidates := &sortableCurlyRoutes{[]*curlyRoute{}}
+	for _, each := range ws.routes {
+		matches, paramCount, staticCount := c.matchesRouteByPathTokens(each.pathParts, requestTokens)
+		if matches {
+			candidates.add(&curlyRoute{each, paramCount, staticCount}) // TODO make sure Routes() return pointers?
+		}
+	}
+	sort.Sort(sort.Reverse(candidates))
+	return candidates.routes()
+}
+
+// matchesRouteByPathTokens computes whether it matches, howmany parameters do match and what the number of static path elements are.
+func (c CurlyRouter) matchesRouteByPathTokens(routeTokens, requestTokens []string) (matches bool, paramCount int, staticCount int) {
+	if len(routeTokens) < len(requestTokens) {
+		// proceed in matching only if last routeToken is wildcard
+		count := len(routeTokens)
+		if count == 0 || !strings.HasSuffix(routeTokens[count-1], "*}") {
+			return false, 0, 0
+		}
+		// proceed
+	}
+	for i, routeToken := range routeTokens {
+		if i == len(requestTokens) {
+			// reached end of request path
+			return false, 0, 0
+		}
+		requestToken := requestTokens[i]
+		if strings.HasPrefix(routeToken, "{") {
+			paramCount++
+			if colon := strings.Index(routeToken, ":"); colon != -1 {
+				// match by regex
+				matchesToken, matchesRemainder := c.regularMatchesPathToken(routeToken, colon, requestToken)
+				if !matchesToken {
+					return false, 0, 0
+				}
+				if matchesRemainder {
+					break
+				}
+			}
+		} else { // no { prefix
+			if requestToken != routeToken {
+				return false, 0, 0
+			}
+			staticCount++
+		}
+	}
+	return true, paramCount, staticCount
+}
+
+// regularMatchesPathToken tests whether the regular expression part of routeToken matches the requestToken or all remaining tokens
+// format routeToken is {someVar:someExpression}, e.g. {zipcode:[\d][\d][\d][\d][A-Z][A-Z]}
+func (c CurlyRouter) regularMatchesPathToken(routeToken string, colon int, requestToken string) (matchesToken bool, matchesRemainder bool) {
+	regPart := routeToken[colon+1 : len(routeToken)-1]
+	if regPart == "*" {
+		if trace {
+			traceLogger.Printf("wildcard parameter detected in route token %s that matches %s\n", routeToken, requestToken)
+		}
+		return true, true
+	}
+	matched, err := regexp.MatchString(regPart, requestToken)
+	return (matched && err == nil), false
+}
+
+// detectRoute selectes from a list of Route the first match by inspecting both the Accept and Content-Type
+// headers of the Request. See also RouterJSR311 in jsr311.go
+func (c CurlyRouter) detectRoute(candidateRoutes []Route, httpRequest *http.Request) (*Route, error) {
+	// tracing is done inside detectRoute
+	return RouterJSR311{}.detectRoute(candidateRoutes, httpRequest)
+}
+
+// detectWebService returns the best matching webService given the list of path tokens.
+// see also computeWebserviceScore
+func (c CurlyRouter) detectWebService(requestTokens []string, webServices []*WebService) *WebService {
+	var best *WebService
+	score := -1
+	for _, each := range webServices {
+		matches, eachScore := c.computeWebserviceScore(requestTokens, each.pathExpr.tokens)
+		if matches && (eachScore > score) {
+			best = each
+			score = eachScore
+		}
+	}
+	return best
+}
+
+// computeWebserviceScore returns whether tokens match and
+// the weighted score of the longest matching consecutive tokens from the beginning.
+func (c CurlyRouter) computeWebserviceScore(requestTokens []string, tokens []string) (bool, int) {
+	if len(tokens) > len(requestTokens) {
+		return false, 0
+	}
+	score := 0
+	for i := 0; i < len(tokens); i++ {
+		each := requestTokens[i]
+		other := tokens[i]
+		if len(each) == 0 && len(other) == 0 {
+			score++
+			continue
+		}
+		if len(other) > 0 && strings.HasPrefix(other, "{") {
+			// no empty match
+			if len(each) == 0 {
+				return false, score
+			}
+			score += 1
+		} else {
+			// not a parameter
+			if each != other {
+				return false, score
+			}
+			score += (len(tokens) - i) * 10 //fuzzy
+		}
+	}
+	return true, score
+}

vendor/github.com/emicklei/go-restful/curly_route.go

@@ -0,0 +1,54 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+// curlyRoute exits for sorting Routes by the CurlyRouter based on number of parameters and number of static path elements.
+type curlyRoute struct {
+	route       Route
+	paramCount  int
+	staticCount int
+}
+
+type sortableCurlyRoutes struct {
+	candidates []*curlyRoute
+}
+
+func (s *sortableCurlyRoutes) add(route *curlyRoute) {
+	s.candidates = append(s.candidates, route)
+}
+
+func (s *sortableCurlyRoutes) routes() (routes []Route) {
+	for _, each := range s.candidates {
+		routes = append(routes, each.route) // TODO change return type
+	}
+	return routes
+}
+
+func (s *sortableCurlyRoutes) Len() int {
+	return len(s.candidates)
+}
+func (s *sortableCurlyRoutes) Swap(i, j int) {
+	s.candidates[i], s.candidates[j] = s.candidates[j], s.candidates[i]
+}
+func (s *sortableCurlyRoutes) Less(i, j int) bool {
+	ci := s.candidates[i]
+	cj := s.candidates[j]
+
+	// primary key
+	if ci.staticCount < cj.staticCount {
+		return true
+	}
+	if ci.staticCount > cj.staticCount {
+		return false
+	}
+	// secundary key
+	if ci.paramCount < cj.paramCount {
+		return true
+	}
+	if ci.paramCount > cj.paramCount {
+		return false
+	}
+	return ci.route.Path < cj.route.Path
+}

vendor/github.com/emicklei/go-restful/doc.go

@@ -0,0 +1,196 @@
+/*
+Package restful, a lean package for creating REST-style WebServices without magic.
+
+WebServices and Routes
+
+A WebService has a collection of Route objects that dispatch incoming Http Requests to a function calls.
+Typically, a WebService has a root path (e.g. /users) and defines common MIME types for its routes.
+WebServices must be added to a container (see below) in order to handler Http requests from a server.
+
+A Route is defined by a HTTP method, an URL path and (optionally) the MIME types it consumes (Content-Type) and produces (Accept).
+This package has the logic to find the best matching Route and if found, call its Function.
+
+	ws := new(restful.WebService)
+	ws.
+		Path("/users").
+		Consumes(restful.MIME_JSON, restful.MIME_XML).
+		Produces(restful.MIME_JSON, restful.MIME_XML)
+
+	ws.Route(ws.GET("/{user-id}").To(u.findUser))  // u is a UserResource
+
+	...
+
+	// GET http://localhost:8080/users/1
+	func (u UserResource) findUser(request *restful.Request, response *restful.Response) {
+		id := request.PathParameter("user-id")
+		...
+	}
+
+The (*Request, *Response) arguments provide functions for reading information from the request and writing information back to the response.
+
+See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-user-resource.go with a full implementation.
+
+Regular expression matching Routes
+
+A Route parameter can be specified using the format "uri/{var[:regexp]}" or the special version "uri/{var:*}" for matching the tail of the path.
+For example, /persons/{name:[A-Z][A-Z]} can be used to restrict values for the parameter "name" to only contain capital alphabetic characters.
+Regular expressions must use the standard Go syntax as described in the regexp package. (https://code.google.com/p/re2/wiki/Syntax)
+This feature requires the use of a CurlyRouter.
+
+Containers
+
+A Container holds a collection of WebServices, Filters and a http.ServeMux for multiplexing http requests.
+Using the statements "restful.Add(...) and restful.Filter(...)" will register WebServices and Filters to the Default Container.
+The Default container of go-restful uses the http.DefaultServeMux.
+You can create your own Container and create a new http.Server for that particular container.
+
+	container := restful.NewContainer()
+	server := &http.Server{Addr: ":8081", Handler: container}
+
+Filters
+
+A filter dynamically intercepts requests and responses to transform or use the information contained in the requests or responses.
+You can use filters to perform generic logging, measurement, authentication, redirect, set response headers etc.
+In the restful package there are three hooks into the request,response flow where filters can be added.
+Each filter must define a FilterFunction:
+
+	func (req *restful.Request, resp *restful.Response, chain *restful.FilterChain)
+
+Use the following statement to pass the request,response pair to the next filter or RouteFunction
+
+	chain.ProcessFilter(req, resp)
+
+Container Filters
+
+These are processed before any registered WebService.
+
+	// install a (global) filter for the default container (processed before any webservice)
+	restful.Filter(globalLogging)
+
+WebService Filters
+
+These are processed before any Route of a WebService.
+
+	// install a webservice filter (processed before any route)
+	ws.Filter(webserviceLogging).Filter(measureTime)
+
+
+Route Filters
+
+These are processed before calling the function associated with the Route.
+
+	// install 2 chained route filters (processed before calling findUser)
+	ws.Route(ws.GET("/{user-id}").Filter(routeLogging).Filter(NewCountFilter().routeCounter).To(findUser))
+
+See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-filters.go with full implementations.
+
+Response Encoding
+
+Two encodings are supported: gzip and deflate. To enable this for all responses:
+
+	restful.DefaultContainer.EnableContentEncoding(true)
+
+If a Http request includes the Accept-Encoding header then the response content will be compressed using the specified encoding.
+Alternatively, you can create a Filter that performs the encoding and install it per WebService or Route.
+
+See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-encoding-filter.go
+
+OPTIONS support
+
+By installing a pre-defined container filter, your Webservice(s) can respond to the OPTIONS Http request.
+
+	Filter(OPTIONSFilter())
+
+CORS
+
+By installing the filter of a CrossOriginResourceSharing (CORS), your WebService(s) can handle CORS requests.
+
+	cors := CrossOriginResourceSharing{ExposeHeaders: []string{"X-My-Header"}, CookiesAllowed: false, Container: DefaultContainer}
+	Filter(cors.Filter)
+
+Error Handling
+
+Unexpected things happen. If a request cannot be processed because of a failure, your service needs to tell via the response what happened and why.
+For this reason HTTP status codes exist and it is important to use the correct code in every exceptional situation.
+
+	400: Bad Request
+
+If path or query parameters are not valid (content or type) then use http.StatusBadRequest.
+
+	404: Not Found
+
+Despite a valid URI, the resource requested may not be available
+
+	500: Internal Server Error
+
+If the application logic could not process the request (or write the response) then use http.StatusInternalServerError.
+
+	405: Method Not Allowed
+
+The request has a valid URL but the method (GET,PUT,POST,...) is not allowed.
+
+	406: Not Acceptable
+
+The request does not have or has an unknown Accept Header set for this operation.
+
+	415: Unsupported Media Type
+
+The request does not have or has an unknown Content-Type Header set for this operation.
+
+ServiceError
+
+In addition to setting the correct (error) Http status code, you can choose to write a ServiceError message on the response.
+
+Performance options
+
+This package has several options that affect the performance of your service. It is important to understand them and how you can change it.
+
+	restful.DefaultContainer.Router(CurlyRouter{})
+
+The default router is the RouterJSR311 which is an implementation of its spec (http://jsr311.java.net/nonav/releases/1.1/spec/spec.html).
+However, it uses regular expressions for all its routes which, depending on your usecase, may consume a significant amount of time.
+The CurlyRouter implementation is more lightweight that also allows you to use wildcards and expressions, but only if needed.
+
+	restful.DefaultContainer.DoNotRecover(true)
+
+DoNotRecover controls whether panics will be caught to return HTTP 500.
+If set to true, Route functions are responsible for handling any error situation.
+Default value is false; it will recover from panics. This has performance implications.
+
+	restful.SetCacheReadEntity(false)
+
+SetCacheReadEntity controls whether the response data ([]byte) is cached such that ReadEntity is repeatable.
+If you expect to read large amounts of payload data, and you do not use this feature, you should set it to false.
+
+	restful.SetCompressorProvider(NewBoundedCachedCompressors(20, 20))
+
+If content encoding is enabled then the default strategy for getting new gzip/zlib writers and readers is to use a sync.Pool.
+Because writers are expensive structures, performance is even more improved when using a preloaded cache. You can also inject your own implementation.
+
+Trouble shooting
+
+This package has the means to produce detail logging of the complete Http request matching process and filter invocation.
+Enabling this feature requires you to set an implementation of restful.StdLogger (e.g. log.Logger) instance such as:
+
+	restful.TraceLogger(log.New(os.Stdout, "[restful] ", log.LstdFlags|log.Lshortfile))
+
+Logging
+
+The restful.SetLogger() method allows you to override the logger used by the package. By default restful
+uses the standard library `log` package and logs to stdout. Different logging packages are supported as
+long as they conform to `StdLogger` interface defined in the `log` sub-package, writing an adapter for your
+preferred package is simple.
+
+Resources
+
+[project]: https://github.com/emicklei/go-restful
+
+[examples]: https://github.com/emicklei/go-restful/blob/master/examples
+
+[design]:  http://ernestmicklei.com/2012/11/11/go-restful-api-design/
+
+[showcases]: https://github.com/emicklei/mora, https://github.com/emicklei/landskape
+
+(c) 2012-2015, http://ernestmicklei.com. MIT License
+*/
+package restful

vendor/github.com/emicklei/go-restful/entity_accessors.go

@@ -0,0 +1,163 @@
+package restful
+
+// Copyright 2015 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"encoding/json"
+	"encoding/xml"
+	"strings"
+	"sync"
+)
+
+// EntityReaderWriter can read and write values using an encoding such as JSON,XML.
+type EntityReaderWriter interface {
+	// Read a serialized version of the value from the request.
+	// The Request may have a decompressing reader. Depends on Content-Encoding.
+	Read(req *Request, v interface{}) error
+
+	// Write a serialized version of the value on the response.
+	// The Response may have a compressing writer. Depends on Accept-Encoding.
+	// status should be a valid Http Status code
+	Write(resp *Response, status int, v interface{}) error
+}
+
+// entityAccessRegistry is a singleton
+var entityAccessRegistry = &entityReaderWriters{
+	protection: new(sync.RWMutex),
+	accessors:  map[string]EntityReaderWriter{},
+}
+
+// entityReaderWriters associates MIME to an EntityReaderWriter
+type entityReaderWriters struct {
+	protection *sync.RWMutex
+	accessors  map[string]EntityReaderWriter
+}
+
+func init() {
+	RegisterEntityAccessor(MIME_JSON, NewEntityAccessorJSON(MIME_JSON))
+	RegisterEntityAccessor(MIME_XML, NewEntityAccessorXML(MIME_XML))
+}
+
+// RegisterEntityAccessor add/overrides the ReaderWriter for encoding content with this MIME type.
+func RegisterEntityAccessor(mime string, erw EntityReaderWriter) {
+	entityAccessRegistry.protection.Lock()
+	defer entityAccessRegistry.protection.Unlock()
+	entityAccessRegistry.accessors[mime] = erw
+}
+
+// NewEntityAccessorJSON returns a new EntityReaderWriter for accessing JSON content.
+// This package is already initialized with such an accessor using the MIME_JSON contentType.
+func NewEntityAccessorJSON(contentType string) EntityReaderWriter {
+	return entityJSONAccess{ContentType: contentType}
+}
+
+// NewEntityAccessorXML returns a new EntityReaderWriter for accessing XML content.
+// This package is already initialized with such an accessor using the MIME_XML contentType.
+func NewEntityAccessorXML(contentType string) EntityReaderWriter {
+	return entityXMLAccess{ContentType: contentType}
+}
+
+// accessorAt returns the registered ReaderWriter for this MIME type.
+func (r *entityReaderWriters) accessorAt(mime string) (EntityReaderWriter, bool) {
+	r.protection.RLock()
+	defer r.protection.RUnlock()
+	er, ok := r.accessors[mime]
+	if !ok {
+		// retry with reverse lookup
+		// more expensive but we are in an exceptional situation anyway
+		for k, v := range r.accessors {
+			if strings.Contains(mime, k) {
+				return v, true
+			}
+		}
+	}
+	return er, ok
+}
+
+// entityXMLAccess is a EntityReaderWriter for XML encoding
+type entityXMLAccess struct {
+	// This is used for setting the Content-Type header when writing
+	ContentType string
+}
+
+// Read unmarshalls the value from XML
+func (e entityXMLAccess) Read(req *Request, v interface{}) error {
+	return xml.NewDecoder(req.Request.Body).Decode(v)
+}
+
+// Write marshalls the value to JSON and set the Content-Type Header.
+func (e entityXMLAccess) Write(resp *Response, status int, v interface{}) error {
+	return writeXML(resp, status, e.ContentType, v)
+}
+
+// writeXML marshalls the value to JSON and set the Content-Type Header.
+func writeXML(resp *Response, status int, contentType string, v interface{}) error {
+	if v == nil {
+		resp.WriteHeader(status)
+		// do not write a nil representation
+		return nil
+	}
+	if resp.prettyPrint {
+		// pretty output must be created and written explicitly
+		output, err := xml.MarshalIndent(v, " ", " ")
+		if err != nil {
+			return err
+		}
+		resp.Header().Set(HEADER_ContentType, contentType)
+		resp.WriteHeader(status)
+		_, err = resp.Write([]byte(xml.Header))
+		if err != nil {
+			return err
+		}
+		_, err = resp.Write(output)
+		return err
+	}
+	// not-so-pretty
+	resp.Header().Set(HEADER_ContentType, contentType)
+	resp.WriteHeader(status)
+	return xml.NewEncoder(resp).Encode(v)
+}
+
+// entityJSONAccess is a EntityReaderWriter for JSON encoding
+type entityJSONAccess struct {
+	// This is used for setting the Content-Type header when writing
+	ContentType string
+}
+
+// Read unmarshalls the value from JSON
+func (e entityJSONAccess) Read(req *Request, v interface{}) error {
+	decoder := json.NewDecoder(req.Request.Body)
+	decoder.UseNumber()
+	return decoder.Decode(v)
+}
+
+// Write marshalls the value to JSON and set the Content-Type Header.
+func (e entityJSONAccess) Write(resp *Response, status int, v interface{}) error {
+	return writeJSON(resp, status, e.ContentType, v)
+}
+
+// write marshalls the value to JSON and set the Content-Type Header.
+func writeJSON(resp *Response, status int, contentType string, v interface{}) error {
+	if v == nil {
+		resp.WriteHeader(status)
+		// do not write a nil representation
+		return nil
+	}
+	if resp.prettyPrint {
+		// pretty output must be created and written explicitly
+		output, err := json.MarshalIndent(v, " ", " ")
+		if err != nil {
+			return err
+		}
+		resp.Header().Set(HEADER_ContentType, contentType)
+		resp.WriteHeader(status)
+		_, err = resp.Write(output)
+		return err
+	}
+	// not-so-pretty
+	resp.Header().Set(HEADER_ContentType, contentType)
+	resp.WriteHeader(status)
+	return json.NewEncoder(resp).Encode(v)
+}

vendor/github.com/emicklei/go-restful/filter.go

@@ -0,0 +1,26 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+// FilterChain is a request scoped object to process one or more filters before calling the target RouteFunction.
+type FilterChain struct {
+	Filters []FilterFunction // ordered list of FilterFunction
+	Index   int              // index into filters that is currently in progress
+	Target  RouteFunction    // function to call after passing all filters
+}
+
+// ProcessFilter passes the request,response pair through the next of Filters.
+// Each filter can decide to proceed to the next Filter or handle the Response itself.
+func (f *FilterChain) ProcessFilter(request *Request, response *Response) {
+	if f.Index < len(f.Filters) {
+		f.Index++
+		f.Filters[f.Index-1](request, response, f)
+	} else {
+		f.Target(request, response)
+	}
+}
+
+// FilterFunction definitions must call ProcessFilter on the FilterChain to pass on the control and eventually call the RouteFunction
+type FilterFunction func(*Request, *Response, *FilterChain)

vendor/github.com/emicklei/go-restful/install.sh

@@ -0,0 +1,9 @@
+cd examples
+	ls *.go | xargs -I {} go build -o /tmp/ignore {}
+	cd ..
+go fmt ...swagger && \
+go test -test.v ...swagger && \
+go install ...swagger && \
+go fmt ...restful && \
+go test -test.v ...restful && \
+go install ...restful

vendor/github.com/emicklei/go-restful/jsr311.go

@@ -0,0 +1,247 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"sort"
+)
+
+// RouterJSR311 implements the flow for matching Requests to Routes (and consequently Resource Functions)
+// as specified by the JSR311 http://jsr311.java.net/nonav/releases/1.1/spec/spec.html.
+// RouterJSR311 implements the Router interface.
+// Concept of locators is not implemented.
+type RouterJSR311 struct{}
+
+// SelectRoute is part of the Router interface and returns the best match
+// for the WebService and its Route for the given Request.
+func (r RouterJSR311) SelectRoute(
+	webServices []*WebService,
+	httpRequest *http.Request) (selectedService *WebService, selectedRoute *Route, err error) {
+
+	// Identify the root resource class (WebService)
+	dispatcher, finalMatch, err := r.detectDispatcher(httpRequest.URL.Path, webServices)
+	if err != nil {
+		return nil, nil, NewError(http.StatusNotFound, "")
+	}
+	// Obtain the set of candidate methods (Routes)
+	routes := r.selectRoutes(dispatcher, finalMatch)
+	if len(routes) == 0 {
+		return dispatcher, nil, NewError(http.StatusNotFound, "404: Page Not Found")
+	}
+
+	// Identify the method (Route) that will handle the request
+	route, ok := r.detectRoute(routes, httpRequest)
+	return dispatcher, route, ok
+}
+
+// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2
+func (r RouterJSR311) detectRoute(routes []Route, httpRequest *http.Request) (*Route, error) {
+	// http method
+	methodOk := []Route{}
+	for _, each := range routes {
+		if httpRequest.Method == each.Method {
+			methodOk = append(methodOk, each)
+		}
+	}
+	if len(methodOk) == 0 {
+		if trace {
+			traceLogger.Printf("no Route found (in %d routes) that matches HTTP method %s\n", len(routes), httpRequest.Method)
+		}
+		return nil, NewError(http.StatusMethodNotAllowed, "405: Method Not Allowed")
+	}
+	inputMediaOk := methodOk
+
+	// content-type
+	contentType := httpRequest.Header.Get(HEADER_ContentType)
+	inputMediaOk = []Route{}
+	for _, each := range methodOk {
+		if each.matchesContentType(contentType) {
+			inputMediaOk = append(inputMediaOk, each)
+		}
+	}
+	if len(inputMediaOk) == 0 {
+		if trace {
+			traceLogger.Printf("no Route found (from %d) that matches HTTP Content-Type: %s\n", len(methodOk), contentType)
+		}
+		return nil, NewError(http.StatusUnsupportedMediaType, "415: Unsupported Media Type")
+	}
+
+	// accept
+	outputMediaOk := []Route{}
+	accept := httpRequest.Header.Get(HEADER_Accept)
+	if accept == "" {
+		accept = "*/*"
+	}
+	for _, each := range inputMediaOk {
+		if each.matchesAccept(accept) {
+			outputMediaOk = append(outputMediaOk, each)
+		}
+	}
+	if len(outputMediaOk) == 0 {
+		if trace {
+			traceLogger.Printf("no Route found (from %d) that matches HTTP Accept: %s\n", len(inputMediaOk), accept)
+		}
+		return nil, NewError(http.StatusNotAcceptable, "406: Not Acceptable")
+	}
+	return r.bestMatchByMedia(outputMediaOk, contentType, accept), nil
+}
+
+// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2
+// n/m > n/* > */*
+func (r RouterJSR311) bestMatchByMedia(routes []Route, contentType string, accept string) *Route {
+	// TODO
+	return &routes[0]
+}
+
+// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2  (step 2)
+func (r RouterJSR311) selectRoutes(dispatcher *WebService, pathRemainder string) []Route {
+	filtered := &sortableRouteCandidates{}
+	for _, each := range dispatcher.Routes() {
+		pathExpr := each.pathExpr
+		matches := pathExpr.Matcher.FindStringSubmatch(pathRemainder)
+		if matches != nil {
+			lastMatch := matches[len(matches)-1]
+			if len(lastMatch) == 0 || lastMatch == "/" { // do not include if value is neither empty nor ‘/’.
+				filtered.candidates = append(filtered.candidates,
+					routeCandidate{each, len(matches) - 1, pathExpr.LiteralCount, pathExpr.VarCount})
+			}
+		}
+	}
+	if len(filtered.candidates) == 0 {
+		if trace {
+			traceLogger.Printf("WebService on path %s has no routes that match URL path remainder:%s\n", dispatcher.rootPath, pathRemainder)
+		}
+		return []Route{}
+	}
+	sort.Sort(sort.Reverse(filtered))
+
+	// select other routes from candidates whoes expression matches rmatch
+	matchingRoutes := []Route{filtered.candidates[0].route}
+	for c := 1; c < len(filtered.candidates); c++ {
+		each := filtered.candidates[c]
+		if each.route.pathExpr.Matcher.MatchString(pathRemainder) {
+			matchingRoutes = append(matchingRoutes, each.route)
+		}
+	}
+	return matchingRoutes
+}
+
+// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2 (step 1)
+func (r RouterJSR311) detectDispatcher(requestPath string, dispatchers []*WebService) (*WebService, string, error) {
+	filtered := &sortableDispatcherCandidates{}
+	for _, each := range dispatchers {
+		matches := each.pathExpr.Matcher.FindStringSubmatch(requestPath)
+		if matches != nil {
+			filtered.candidates = append(filtered.candidates,
+				dispatcherCandidate{each, matches[len(matches)-1], len(matches), each.pathExpr.LiteralCount, each.pathExpr.VarCount})
+		}
+	}
+	if len(filtered.candidates) == 0 {
+		if trace {
+			traceLogger.Printf("no WebService was found to match URL path:%s\n", requestPath)
+		}
+		return nil, "", errors.New("not found")
+	}
+	sort.Sort(sort.Reverse(filtered))
+	return filtered.candidates[0].dispatcher, filtered.candidates[0].finalMatch, nil
+}
+
+// Types and functions to support the sorting of Routes
+
+type routeCandidate struct {
+	route           Route
+	matchesCount    int // the number of capturing groups
+	literalCount    int // the number of literal characters (means those not resulting from template variable substitution)
+	nonDefaultCount int // the number of capturing groups with non-default regular expressions (i.e. not ‘([^  /]+?)’)
+}
+
+func (r routeCandidate) expressionToMatch() string {
+	return r.route.pathExpr.Source
+}
+
+func (r routeCandidate) String() string {
+	return fmt.Sprintf("(m=%d,l=%d,n=%d)", r.matchesCount, r.literalCount, r.nonDefaultCount)
+}
+
+type sortableRouteCandidates struct {
+	candidates []routeCandidate
+}
+
+func (rcs *sortableRouteCandidates) Len() int {
+	return len(rcs.candidates)
+}
+func (rcs *sortableRouteCandidates) Swap(i, j int) {
+	rcs.candidates[i], rcs.candidates[j] = rcs.candidates[j], rcs.candidates[i]
+}
+func (rcs *sortableRouteCandidates) Less(i, j int) bool {
+	ci := rcs.candidates[i]
+	cj := rcs.candidates[j]
+	// primary key
+	if ci.literalCount < cj.literalCount {
+		return true
+	}
+	if ci.literalCount > cj.literalCount {
+		return false
+	}
+	// secundary key
+	if ci.matchesCount < cj.matchesCount {
+		return true
+	}
+	if ci.matchesCount > cj.matchesCount {
+		return false
+	}
+	// tertiary key
+	if ci.nonDefaultCount < cj.nonDefaultCount {
+		return true
+	}
+	if ci.nonDefaultCount > cj.nonDefaultCount {
+		return false
+	}
+	// quaternary key ("source" is interpreted as Path)
+	return ci.route.Path < cj.route.Path
+}
+
+// Types and functions to support the sorting of Dispatchers
+
+type dispatcherCandidate struct {
+	dispatcher      *WebService
+	finalMatch      string
+	matchesCount    int // the number of capturing groups
+	literalCount    int // the number of literal characters (means those not resulting from template variable substitution)
+	nonDefaultCount int // the number of capturing groups with non-default regular expressions (i.e. not ‘([^  /]+?)’)
+}
+type sortableDispatcherCandidates struct {
+	candidates []dispatcherCandidate
+}
+
+func (dc *sortableDispatcherCandidates) Len() int {
+	return len(dc.candidates)
+}
+func (dc *sortableDispatcherCandidates) Swap(i, j int) {
+	dc.candidates[i], dc.candidates[j] = dc.candidates[j], dc.candidates[i]
+}
+func (dc *sortableDispatcherCandidates) Less(i, j int) bool {
+	ci := dc.candidates[i]
+	cj := dc.candidates[j]
+	// primary key
+	if ci.matchesCount < cj.matchesCount {
+		return true
+	}
+	if ci.matchesCount > cj.matchesCount {
+		return false
+	}
+	// secundary key
+	if ci.literalCount < cj.literalCount {
+		return true
+	}
+	if ci.literalCount > cj.literalCount {
+		return false
+	}
+	// tertiary key
+	return ci.nonDefaultCount < cj.nonDefaultCount
+}

vendor/github.com/emicklei/go-restful/log/log.go

@@ -0,0 +1,31 @@
+package log
+
+import (
+	stdlog "log"
+	"os"
+)
+
+// Logger corresponds to a minimal subset of the interface satisfied by stdlib log.Logger
+type StdLogger interface {
+	Print(v ...interface{})
+	Printf(format string, v ...interface{})
+}
+
+var Logger StdLogger
+
+func init() {
+	// default Logger
+	SetLogger(stdlog.New(os.Stderr, "[restful] ", stdlog.LstdFlags|stdlog.Lshortfile))
+}
+
+func SetLogger(customLogger StdLogger) {
+	Logger = customLogger
+}
+
+func Print(v ...interface{}) {
+	Logger.Print(v...)
+}
+
+func Printf(format string, v ...interface{}) {
+	Logger.Printf(format, v...)
+}

vendor/github.com/emicklei/go-restful/logger.go

@@ -0,0 +1,32 @@
+package restful
+
+// Copyright 2014 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+import (
+	"github.com/emicklei/go-restful/log"
+)
+
+var trace bool = false
+var traceLogger log.StdLogger
+
+func init() {
+	traceLogger = log.Logger // use the package logger by default
+}
+
+// TraceLogger enables detailed logging of Http request matching and filter invocation. Default no logger is set.
+// You may call EnableTracing() directly to enable trace logging to the package-wide logger.
+func TraceLogger(logger log.StdLogger) {
+	traceLogger = logger
+	EnableTracing(logger != nil)
+}
+
+// expose the setter for the global logger on the top-level package
+func SetLogger(customLogger log.StdLogger) {
+	log.SetLogger(customLogger)
+}
+
+// EnableTracing can be used to Trace logging on and off.
+func EnableTracing(enabled bool) {
+	trace = enabled
+}

vendor/github.com/emicklei/go-restful/mime.go

@@ -0,0 +1,45 @@
+package restful
+
+import (
+	"strconv"
+	"strings"
+)
+
+type mime struct {
+	media   string
+	quality float64
+}
+
+// insertMime adds a mime to a list and keeps it sorted by quality.
+func insertMime(l []mime, e mime) []mime {
+	for i, each := range l {
+		// if current mime has lower quality then insert before
+		if e.quality > each.quality {
+			left := append([]mime{}, l[0:i]...)
+			return append(append(left, e), l[i:]...)
+		}
+	}
+	return append(l, e)
+}
+
+// sortedMimes returns a list of mime sorted (desc) by its specified quality.
+func sortedMimes(accept string) (sorted []mime) {
+	for _, each := range strings.Split(accept, ",") {
+		typeAndQuality := strings.Split(strings.Trim(each, " "), ";")
+		if len(typeAndQuality) == 1 {
+			sorted = insertMime(sorted, mime{typeAndQuality[0], 1.0})
+		} else {
+			// take factor
+			parts := strings.Split(typeAndQuality[1], "=")
+			if len(parts) == 2 {
+				f, err := strconv.ParseFloat(parts[1], 64)
+				if err != nil {
+					traceLogger.Printf("unable to parse quality in %s, %v", each, err)
+				} else {
+					sorted = insertMime(sorted, mime{typeAndQuality[0], f})
+				}
+			}
+		}
+	}
+	return
+}

vendor/github.com/emicklei/go-restful/options_filter.go

@@ -0,0 +1,26 @@
+package restful
+
+import "strings"
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+// OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
+// and provides the response with a set of allowed methods for the request URL Path.
+// As for any filter, you can also install it for a particular WebService within a Container.
+// Note: this filter is not needed when using CrossOriginResourceSharing (for CORS).
+func (c *Container) OPTIONSFilter(req *Request, resp *Response, chain *FilterChain) {
+	if "OPTIONS" != req.Request.Method {
+		chain.ProcessFilter(req, resp)
+		return
+	}
+	resp.AddHeader(HEADER_Allow, strings.Join(c.computeAllowedMethods(req), ","))
+}
+
+// OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
+// and provides the response with a set of allowed methods for the request URL Path.
+// Note: this filter is not needed when using CrossOriginResourceSharing (for CORS).
+func OPTIONSFilter() FilterFunction {
+	return DefaultContainer.OPTIONSFilter
+}

vendor/github.com/emicklei/go-restful/parameter.go

@@ -0,0 +1,114 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+const (
+	// PathParameterKind = indicator of Request parameter type "path"
+	PathParameterKind = iota
+
+	// QueryParameterKind = indicator of Request parameter type "query"
+	QueryParameterKind
+
+	// BodyParameterKind = indicator of Request parameter type "body"
+	BodyParameterKind
+
+	// HeaderParameterKind = indicator of Request parameter type "header"
+	HeaderParameterKind
+
+	// FormParameterKind = indicator of Request parameter type "form"
+	FormParameterKind
+)
+
+// Parameter is for documententing the parameter used in a Http Request
+// ParameterData kinds are Path,Query and Body
+type Parameter struct {
+	data *ParameterData
+}
+
+// ParameterData represents the state of a Parameter.
+// It is made public to make it accessible to e.g. the Swagger package.
+type ParameterData struct {
+	Name, Description, DataType, DataFormat string
+	Kind                                    int
+	Required                                bool
+	AllowableValues                         map[string]string
+	AllowMultiple                           bool
+	DefaultValue                            string
+}
+
+// Data returns the state of the Parameter
+func (p *Parameter) Data() ParameterData {
+	return *p.data
+}
+
+// Kind returns the parameter type indicator (see const for valid values)
+func (p *Parameter) Kind() int {
+	return p.data.Kind
+}
+
+func (p *Parameter) bePath() *Parameter {
+	p.data.Kind = PathParameterKind
+	return p
+}
+func (p *Parameter) beQuery() *Parameter {
+	p.data.Kind = QueryParameterKind
+	return p
+}
+func (p *Parameter) beBody() *Parameter {
+	p.data.Kind = BodyParameterKind
+	return p
+}
+
+func (p *Parameter) beHeader() *Parameter {
+	p.data.Kind = HeaderParameterKind
+	return p
+}
+
+func (p *Parameter) beForm() *Parameter {
+	p.data.Kind = FormParameterKind
+	return p
+}
+
+// Required sets the required field and returns the receiver
+func (p *Parameter) Required(required bool) *Parameter {
+	p.data.Required = required
+	return p
+}
+
+// AllowMultiple sets the allowMultiple field and returns the receiver
+func (p *Parameter) AllowMultiple(multiple bool) *Parameter {
+	p.data.AllowMultiple = multiple
+	return p
+}
+
+// AllowableValues sets the allowableValues field and returns the receiver
+func (p *Parameter) AllowableValues(values map[string]string) *Parameter {
+	p.data.AllowableValues = values
+	return p
+}
+
+// DataType sets the dataType field and returns the receiver
+func (p *Parameter) DataType(typeName string) *Parameter {
+	p.data.DataType = typeName
+	return p
+}
+
+// DataFormat sets the dataFormat field for Swagger UI
+func (p *Parameter) DataFormat(formatName string) *Parameter {
+	p.data.DataFormat = formatName
+	return p
+}
+
+// DefaultValue sets the default value field and returns the receiver
+func (p *Parameter) DefaultValue(stringRepresentation string) *Parameter {
+	p.data.DefaultValue = stringRepresentation
+	return p
+}
+
+// Description sets the description value field and returns the receiver
+func (p *Parameter) Description(doc string) *Parameter {
+	p.data.Description = doc
+	return p
+}

vendor/github.com/emicklei/go-restful/path_expression.go

@@ -0,0 +1,69 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"bytes"
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+// PathExpression holds a compiled path expression (RegExp) needed to match against
+// Http request paths and to extract path parameter values.
+type pathExpression struct {
+	LiteralCount int // the number of literal characters (means those not resulting from template variable substitution)
+	VarCount     int // the number of named parameters (enclosed by {}) in the path
+	Matcher      *regexp.Regexp
+	Source       string // Path as defined by the RouteBuilder
+	tokens       []string
+}
+
+// NewPathExpression creates a PathExpression from the input URL path.
+// Returns an error if the path is invalid.
+func newPathExpression(path string) (*pathExpression, error) {
+	expression, literalCount, varCount, tokens := templateToRegularExpression(path)
+	compiled, err := regexp.Compile(expression)
+	if err != nil {
+		return nil, err
+	}
+	return &pathExpression{literalCount, varCount, compiled, expression, tokens}, nil
+}
+
+// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-370003.7.3
+func templateToRegularExpression(template string) (expression string, literalCount int, varCount int, tokens []string) {
+	var buffer bytes.Buffer
+	buffer.WriteString("^")
+	//tokens = strings.Split(template, "/")
+	tokens = tokenizePath(template)
+	for _, each := range tokens {
+		if each == "" {
+			continue
+		}
+		buffer.WriteString("/")
+		if strings.HasPrefix(each, "{") {
+			// check for regular expression in variable
+			colon := strings.Index(each, ":")
+			if colon != -1 {
+				// extract expression
+				paramExpr := strings.TrimSpace(each[colon+1 : len(each)-1])
+				if paramExpr == "*" { // special case
+					buffer.WriteString("(.*)")
+				} else {
+					buffer.WriteString(fmt.Sprintf("(%s)", paramExpr)) // between colon and closing moustache
+				}
+			} else {
+				// plain var
+				buffer.WriteString("([^/]+?)")
+			}
+			varCount += 1
+		} else {
+			literalCount += len(each)
+			encoded := each // TODO URI encode
+			buffer.WriteString(regexp.QuoteMeta(encoded))
+		}
+	}
+	return strings.TrimRight(buffer.String(), "/") + "(/.*)?$", literalCount, varCount, tokens
+}

vendor/github.com/emicklei/go-restful/request.go

@@ -0,0 +1,131 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"bytes"
+	"compress/zlib"
+	"io/ioutil"
+	"net/http"
+)
+
+var defaultRequestContentType string
+
+var doCacheReadEntityBytes = true
+
+// Request is a wrapper for a http Request that provides convenience methods
+type Request struct {
+	Request           *http.Request
+	bodyContent       *[]byte // to cache the request body for multiple reads of ReadEntity
+	pathParameters    map[string]string
+	attributes        map[string]interface{} // for storing request-scoped values
+	selectedRoutePath string                 // root path + route path that matched the request, e.g. /meetings/{id}/attendees
+}
+
+func NewRequest(httpRequest *http.Request) *Request {
+	return &Request{
+		Request:        httpRequest,
+		pathParameters: map[string]string{},
+		attributes:     map[string]interface{}{},
+	} // empty parameters, attributes
+}
+
+// If ContentType is missing or */* is given then fall back to this type, otherwise
+// a "Unable to unmarshal content of type:" response is returned.
+// Valid values are restful.MIME_JSON and restful.MIME_XML
+// Example:
+// 	restful.DefaultRequestContentType(restful.MIME_JSON)
+func DefaultRequestContentType(mime string) {
+	defaultRequestContentType = mime
+}
+
+// SetCacheReadEntity controls whether the response data ([]byte) is cached such that ReadEntity is repeatable.
+// Default is true (due to backwardcompatibility). For better performance, you should set it to false if you don't need it.
+func SetCacheReadEntity(doCache bool) {
+	doCacheReadEntityBytes = doCache
+}
+
+// PathParameter accesses the Path parameter value by its name
+func (r *Request) PathParameter(name string) string {
+	return r.pathParameters[name]
+}
+
+// PathParameters accesses the Path parameter values
+func (r *Request) PathParameters() map[string]string {
+	return r.pathParameters
+}
+
+// QueryParameter returns the (first) Query parameter value by its name
+func (r *Request) QueryParameter(name string) string {
+	return r.Request.FormValue(name)
+}
+
+// BodyParameter parses the body of the request (once for typically a POST or a PUT) and returns the value of the given name or an error.
+func (r *Request) BodyParameter(name string) (string, error) {
+	err := r.Request.ParseForm()
+	if err != nil {
+		return "", err
+	}
+	return r.Request.PostFormValue(name), nil
+}
+
+// HeaderParameter returns the HTTP Header value of a Header name or empty if missing
+func (r *Request) HeaderParameter(name string) string {
+	return r.Request.Header.Get(name)
+}
+
+// ReadEntity checks the Accept header and reads the content into the entityPointer.
+func (r *Request) ReadEntity(entityPointer interface{}) (err error) {
+	contentType := r.Request.Header.Get(HEADER_ContentType)
+	contentEncoding := r.Request.Header.Get(HEADER_ContentEncoding)
+
+	// OLD feature, cache the body for reads
+	if doCacheReadEntityBytes {
+		if r.bodyContent == nil {
+			data, err := ioutil.ReadAll(r.Request.Body)
+			if err != nil {
+				return err
+			}
+			r.bodyContent = &data
+		}
+		r.Request.Body = ioutil.NopCloser(bytes.NewReader(*r.bodyContent))
+	}
+
+	// check if the request body needs decompression
+	if ENCODING_GZIP == contentEncoding {
+		gzipReader := currentCompressorProvider.AcquireGzipReader()
+		defer currentCompressorProvider.ReleaseGzipReader(gzipReader)
+		gzipReader.Reset(r.Request.Body)
+		r.Request.Body = gzipReader
+	} else if ENCODING_DEFLATE == contentEncoding {
+		zlibReader, err := zlib.NewReader(r.Request.Body)
+		if err != nil {
+			return err
+		}
+		r.Request.Body = zlibReader
+	}
+
+	// lookup the EntityReader
+	entityReader, ok := entityAccessRegistry.accessorAt(contentType)
+	if !ok {
+		return NewError(http.StatusBadRequest, "Unable to unmarshal content of type:"+contentType)
+	}
+	return entityReader.Read(r, entityPointer)
+}
+
+// SetAttribute adds or replaces the attribute with the given value.
+func (r *Request) SetAttribute(name string, value interface{}) {
+	r.attributes[name] = value
+}
+
+// Attribute returns the value associated to the given name. Returns nil if absent.
+func (r Request) Attribute(name string) interface{} {
+	return r.attributes[name]
+}
+
+// SelectedRoutePath root path + route path that matched the request, e.g. /meetings/{id}/attendees
+func (r Request) SelectedRoutePath() string {
+	return r.selectedRoutePath
+}

vendor/github.com/emicklei/go-restful/response.go

@@ -0,0 +1,235 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"errors"
+	"net/http"
+)
+
+// DEPRECATED, use DefaultResponseContentType(mime)
+var DefaultResponseMimeType string
+
+//PrettyPrintResponses controls the indentation feature of XML and JSON serialization
+var PrettyPrintResponses = true
+
+// Response is a wrapper on the actual http ResponseWriter
+// It provides several convenience methods to prepare and write response content.
+type Response struct {
+	http.ResponseWriter
+	requestAccept string   // mime-type what the Http Request says it wants to receive
+	routeProduces []string // mime-types what the Route says it can produce
+	statusCode    int      // HTTP status code that has been written explicity (if zero then net/http has written 200)
+	contentLength int      // number of bytes written for the response body
+	prettyPrint   bool     // controls the indentation feature of XML and JSON serialization. It is initialized using var PrettyPrintResponses.
+	err           error    // err property is kept when WriteError is called
+}
+
+// Creates a new response based on a http ResponseWriter.
+func NewResponse(httpWriter http.ResponseWriter) *Response {
+	return &Response{httpWriter, "", []string{}, http.StatusOK, 0, PrettyPrintResponses, nil} // empty content-types
+}
+
+// If Accept header matching fails, fall back to this type.
+// Valid values are restful.MIME_JSON and restful.MIME_XML
+// Example:
+// 	restful.DefaultResponseContentType(restful.MIME_JSON)
+func DefaultResponseContentType(mime string) {
+	DefaultResponseMimeType = mime
+}
+
+// InternalServerError writes the StatusInternalServerError header.
+// DEPRECATED, use WriteErrorString(http.StatusInternalServerError,reason)
+func (r Response) InternalServerError() Response {
+	r.WriteHeader(http.StatusInternalServerError)
+	return r
+}
+
+// PrettyPrint changes whether this response must produce pretty (line-by-line, indented) JSON or XML output.
+func (r *Response) PrettyPrint(bePretty bool) {
+	r.prettyPrint = bePretty
+}
+
+// AddHeader is a shortcut for .Header().Add(header,value)
+func (r Response) AddHeader(header string, value string) Response {
+	r.Header().Add(header, value)
+	return r
+}
+
+// SetRequestAccepts tells the response what Mime-type(s) the HTTP request said it wants to accept. Exposed for testing.
+func (r *Response) SetRequestAccepts(mime string) {
+	r.requestAccept = mime
+}
+
+// EntityWriter returns the registered EntityWriter that the entity (requested resource)
+// can write according to what the request wants (Accept) and what the Route can produce or what the restful defaults say.
+// If called before WriteEntity and WriteHeader then a false return value can be used to write a 406: Not Acceptable.
+func (r *Response) EntityWriter() (EntityReaderWriter, bool) {
+	sorted := sortedMimes(r.requestAccept)
+	for _, eachAccept := range sorted {
+		for _, eachProduce := range r.routeProduces {
+			if eachProduce == eachAccept.media {
+				if w, ok := entityAccessRegistry.accessorAt(eachAccept.media); ok {
+					return w, true
+				}
+			}
+		}
+		if eachAccept.media == "*/*" {
+			for _, each := range r.routeProduces {
+				if w, ok := entityAccessRegistry.accessorAt(each); ok {
+					return w, true
+				}
+			}
+		}
+	}
+	// if requestAccept is empty
+	writer, ok := entityAccessRegistry.accessorAt(r.requestAccept)
+	if !ok {
+		// if not registered then fallback to the defaults (if set)
+		if DefaultResponseMimeType == MIME_JSON {
+			return entityAccessRegistry.accessorAt(MIME_JSON)
+		}
+		if DefaultResponseMimeType == MIME_XML {
+			return entityAccessRegistry.accessorAt(MIME_XML)
+		}
+		// Fallback to whatever the route says it can produce.
+		// https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+		for _, each := range r.routeProduces {
+			if w, ok := entityAccessRegistry.accessorAt(each); ok {
+				return w, true
+			}
+		}
+		if trace {
+			traceLogger.Printf("no registered EntityReaderWriter found for %s", r.requestAccept)
+		}
+	}
+	return writer, ok
+}
+
+// WriteEntity calls WriteHeaderAndEntity with Http Status OK (200)
+func (r *Response) WriteEntity(value interface{}) error {
+	return r.WriteHeaderAndEntity(http.StatusOK, value)
+}
+
+// WriteHeaderAndEntity marshals the value using the representation denoted by the Accept Header and the registered EntityWriters.
+// If no Accept header is specified (or */*) then respond with the Content-Type as specified by the first in the Route.Produces.
+// If an Accept header is specified then respond with the Content-Type as specified by the first in the Route.Produces that is matched with the Accept header.
+// If the value is nil then no response is send except for the Http status. You may want to call WriteHeader(http.StatusNotFound) instead.
+// If there is no writer available that can represent the value in the requested MIME type then Http Status NotAcceptable is written.
+// Current implementation ignores any q-parameters in the Accept Header.
+// Returns an error if the value could not be written on the response.
+func (r *Response) WriteHeaderAndEntity(status int, value interface{}) error {
+	writer, ok := r.EntityWriter()
+	if !ok {
+		r.WriteHeader(http.StatusNotAcceptable)
+		return nil
+	}
+	return writer.Write(r, status, value)
+}
+
+// WriteAsXml is a convenience method for writing a value in xml (requires Xml tags on the value)
+// It uses the standard encoding/xml package for marshalling the valuel ; not using a registered EntityReaderWriter.
+func (r *Response) WriteAsXml(value interface{}) error {
+	return writeXML(r, http.StatusOK, MIME_XML, value)
+}
+
+// WriteHeaderAndXml is a convenience method for writing a status and value in xml (requires Xml tags on the value)
+// It uses the standard encoding/xml package for marshalling the valuel ; not using a registered EntityReaderWriter.
+func (r *Response) WriteHeaderAndXml(status int, value interface{}) error {
+	return writeXML(r, status, MIME_XML, value)
+}
+
+// WriteAsJson is a convenience method for writing a value in json.
+// It uses the standard encoding/json package for marshalling the valuel ; not using a registered EntityReaderWriter.
+func (r *Response) WriteAsJson(value interface{}) error {
+	return writeJSON(r, http.StatusOK, MIME_JSON, value)
+}
+
+// WriteJson is a convenience method for writing a value in Json with a given Content-Type.
+// It uses the standard encoding/json package for marshalling the valuel ; not using a registered EntityReaderWriter.
+func (r *Response) WriteJson(value interface{}, contentType string) error {
+	return writeJSON(r, http.StatusOK, contentType, value)
+}
+
+// WriteHeaderAndJson is a convenience method for writing the status and a value in Json with a given Content-Type.
+// It uses the standard encoding/json package for marshalling the value ; not using a registered EntityReaderWriter.
+func (r *Response) WriteHeaderAndJson(status int, value interface{}, contentType string) error {
+	return writeJSON(r, status, contentType, value)
+}
+
+// WriteError write the http status and the error string on the response.
+func (r *Response) WriteError(httpStatus int, err error) error {
+	r.err = err
+	return r.WriteErrorString(httpStatus, err.Error())
+}
+
+// WriteServiceError is a convenience method for a responding with a status and a ServiceError
+func (r *Response) WriteServiceError(httpStatus int, err ServiceError) error {
+	r.err = err
+	return r.WriteHeaderAndEntity(httpStatus, err)
+}
+
+// WriteErrorString is a convenience method for an error status with the actual error
+func (r *Response) WriteErrorString(httpStatus int, errorReason string) error {
+	if r.err == nil {
+		// if not called from WriteError
+		r.err = errors.New(errorReason)
+	}
+	r.WriteHeader(httpStatus)
+	if _, err := r.Write([]byte(errorReason)); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Flush implements http.Flusher interface, which sends any buffered data to the client.
+func (r *Response) Flush() {
+	if f, ok := r.ResponseWriter.(http.Flusher); ok {
+		f.Flush()
+	} else if trace {
+		traceLogger.Printf("ResponseWriter %v doesn't support Flush", r)
+	}
+}
+
+// WriteHeader is overridden to remember the Status Code that has been written.
+// Changes to the Header of the response have no effect after this.
+func (r *Response) WriteHeader(httpStatus int) {
+	r.statusCode = httpStatus
+	r.ResponseWriter.WriteHeader(httpStatus)
+}
+
+// StatusCode returns the code that has been written using WriteHeader.
+func (r Response) StatusCode() int {
+	if 0 == r.statusCode {
+		// no status code has been written yet; assume OK
+		return http.StatusOK
+	}
+	return r.statusCode
+}
+
+// Write writes the data to the connection as part of an HTTP reply.
+// Write is part of http.ResponseWriter interface.
+func (r *Response) Write(bytes []byte) (int, error) {
+	written, err := r.ResponseWriter.Write(bytes)
+	r.contentLength += written
+	return written, err
+}
+
+// ContentLength returns the number of bytes written for the response content.
+// Note that this value is only correct if all data is written through the Response using its Write* methods.
+// Data written directly using the underlying http.ResponseWriter is not accounted for.
+func (r Response) ContentLength() int {
+	return r.contentLength
+}
+
+// CloseNotify is part of http.CloseNotifier interface
+func (r Response) CloseNotify() <-chan bool {
+	return r.ResponseWriter.(http.CloseNotifier).CloseNotify()
+}
+
+// Error returns the err created by WriteError
+func (r Response) Error() error {
+	return r.err
+}