Move Ingress godeps to vendor/

vendor/k8s.io/kubernetes/pkg/runtime/codec.go

@@ -0,0 +1,196 @@
+/*
+Copyright 2014 The Kubernetes Authors All rights reserved.
+
+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.
+*/
+
+package runtime
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"net/url"
+	"reflect"
+
+	"k8s.io/kubernetes/pkg/api/unversioned"
+	"k8s.io/kubernetes/pkg/conversion/queryparams"
+)
+
+// codec binds an encoder and decoder.
+type codec struct {
+	Encoder
+	Decoder
+}
+
+// NewCodec creates a Codec from an Encoder and Decoder.
+func NewCodec(e Encoder, d Decoder) Codec {
+	return codec{e, d}
+}
+
+// Encode is a convenience wrapper for encoding to a []byte from an Encoder
+func Encode(e Encoder, obj Object, overrides ...unversioned.GroupVersion) ([]byte, error) {
+	// TODO: reuse buffer
+	buf := &bytes.Buffer{}
+	if err := e.EncodeToStream(obj, buf, overrides...); err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+// Decode is a convenience wrapper for decoding data into an Object.
+func Decode(d Decoder, data []byte) (Object, error) {
+	obj, _, err := d.Decode(data, nil, nil)
+	return obj, err
+}
+
+// DecodeInto performs a Decode into the provided object.
+func DecodeInto(d Decoder, data []byte, into Object) error {
+	out, gvk, err := d.Decode(data, nil, into)
+	if err != nil {
+		return err
+	}
+	if out != into {
+		return fmt.Errorf("unable to decode %s into %v", gvk, reflect.TypeOf(into))
+	}
+	return nil
+}
+
+// EncodeOrDie is a version of Encode which will panic instead of returning an error. For tests.
+func EncodeOrDie(e Encoder, obj Object) string {
+	bytes, err := Encode(e, obj)
+	if err != nil {
+		panic(err)
+	}
+	return string(bytes)
+}
+
+// UseOrCreateObject returns obj if the canonical ObjectKind returned by the provided typer matches gvk, or
+// invokes the ObjectCreator to instantiate a new gvk. Returns an error if the typer cannot find the object.
+func UseOrCreateObject(t Typer, c ObjectCreater, gvk unversioned.GroupVersionKind, obj Object) (Object, error) {
+	if obj != nil {
+		into, _, err := t.ObjectKind(obj)
+		if err != nil {
+			return nil, err
+		}
+		if gvk == *into {
+			return obj, nil
+		}
+	}
+	return c.New(gvk)
+}
+
+// NoopEncoder converts an Decoder to a Serializer or Codec for code that expects them but only uses decoding.
+type NoopEncoder struct {
+	Decoder
+}
+
+var _ Serializer = NoopEncoder{}
+
+func (n NoopEncoder) EncodeToStream(obj Object, w io.Writer, overrides ...unversioned.GroupVersion) error {
+	return fmt.Errorf("encoding is not allowed for this codec: %v", reflect.TypeOf(n.Decoder))
+}
+
+// NoopDecoder converts an Encoder to a Serializer or Codec for code that expects them but only uses encoding.
+type NoopDecoder struct {
+	Encoder
+}
+
+var _ Serializer = NoopDecoder{}
+
+func (n NoopDecoder) Decode(data []byte, gvk *unversioned.GroupVersionKind, into Object) (Object, *unversioned.GroupVersionKind, error) {
+	return nil, nil, fmt.Errorf("decoding is not allowed for this codec: %v", reflect.TypeOf(n.Encoder))
+}
+
+// NewParameterCodec creates a ParameterCodec capable of transforming url values into versioned objects and back.
+func NewParameterCodec(scheme *Scheme) ParameterCodec {
+	return &parameterCodec{
+		typer:     ObjectTyperToTyper(scheme),
+		convertor: scheme,
+		creator:   scheme,
+	}
+}
+
+// parameterCodec implements conversion to and from query parameters and objects.
+type parameterCodec struct {
+	typer     Typer
+	convertor ObjectConvertor
+	creator   ObjectCreater
+}
+
+var _ ParameterCodec = &parameterCodec{}
+
+// DecodeParameters converts the provided url.Values into an object of type From with the kind of into, and then
+// converts that object to into (if necessary). Returns an error if the operation cannot be completed.
+func (c *parameterCodec) DecodeParameters(parameters url.Values, from unversioned.GroupVersion, into Object) error {
+	if len(parameters) == 0 {
+		return nil
+	}
+	targetGVK, _, err := c.typer.ObjectKind(into)
+	if err != nil {
+		return err
+	}
+	if targetGVK.GroupVersion() == from {
+		return c.convertor.Convert(&parameters, into)
+	}
+	input, err := c.creator.New(from.WithKind(targetGVK.Kind))
+	if err != nil {
+		return err
+	}
+	if err := c.convertor.Convert(&parameters, input); err != nil {
+		return err
+	}
+	return c.convertor.Convert(input, into)
+}
+
+// EncodeParameters converts the provided object into the to version, then converts that object to url.Values.
+// Returns an error if conversion is not possible.
+func (c *parameterCodec) EncodeParameters(obj Object, to unversioned.GroupVersion) (url.Values, error) {
+	gvk, _, err := c.typer.ObjectKind(obj)
+	if err != nil {
+		return nil, err
+	}
+	if to != gvk.GroupVersion() {
+		out, err := c.convertor.ConvertToVersion(obj, to.String())
+		if err != nil {
+			return nil, err
+		}
+		obj = out
+	}
+	return queryparams.Convert(obj)
+}
+
+type base64Serializer struct {
+	Serializer
+}
+
+func NewBase64Serializer(s Serializer) Serializer {
+	return &base64Serializer{s}
+}
+
+func (s base64Serializer) EncodeToStream(obj Object, stream io.Writer, overrides ...unversioned.GroupVersion) error {
+	e := base64.NewEncoder(base64.StdEncoding, stream)
+	err := s.Serializer.EncodeToStream(obj, e, overrides...)
+	e.Close()
+	return err
+}
+
+func (s base64Serializer) Decode(data []byte, defaults *unversioned.GroupVersionKind, into Object) (Object, *unversioned.GroupVersionKind, error) {
+	out := make([]byte, base64.StdEncoding.DecodedLen(len(data)))
+	n, err := base64.StdEncoding.Decode(out, data)
+	if err != nil {
+		return nil, nil, err
+	}
+	return s.Serializer.Decode(out[:n], defaults, into)
+}