Update go dependencies for kubernetes 1.16.0

vendor/k8s.io/client-go/util/flowcontrol/backoff.go

@@ -30,7 +30,7 @@ type backoffEntry struct {
 }
 
 type Backoff struct {
-	sync.Mutex
+	sync.RWMutex
 	Clock           clock.Clock
 	defaultDuration time.Duration
 	maxDuration     time.Duration
@@ -57,8 +57,8 @@ func NewBackOff(initial, max time.Duration) *Backoff {
 
 // Get the current backoff Duration
 func (p *Backoff) Get(id string) time.Duration {
-	p.Lock()
-	defer p.Unlock()
+	p.RLock()
+	defer p.RUnlock()
 	var delay time.Duration
 	entry, ok := p.perItemBackoff[id]
 	if ok {
@@ -90,8 +90,8 @@ func (p *Backoff) Reset(id string) {
 
 // Returns True if the elapsed time since eventTime is smaller than the current backoff window
 func (p *Backoff) IsInBackOffSince(id string, eventTime time.Time) bool {
-	p.Lock()
-	defer p.Unlock()
+	p.RLock()
+	defer p.RUnlock()
 	entry, ok := p.perItemBackoff[id]
 	if !ok {
 		return false
@@ -104,8 +104,8 @@ func (p *Backoff) IsInBackOffSince(id string, eventTime time.Time) bool {
 
 // Returns True if time since lastupdate is less than the current backoff window.
 func (p *Backoff) IsInBackOffSinceUpdate(id string, eventTime time.Time) bool {
-	p.Lock()
-	defer p.Unlock()
+	p.RLock()
+	defer p.RUnlock()
 	entry, ok := p.perItemBackoff[id]
 	if !ok {
 		return false

vendor/k8s.io/client-go/util/flowcontrol/throttle.go

@@ -17,6 +17,8 @@ limitations under the License.
 package flowcontrol
 
 import (
+	"context"
+	"errors"
 	"sync"
 	"time"
 
@@ -33,6 +35,8 @@ type RateLimiter interface {
 	Stop()
 	// QPS returns QPS of this rate limiter
 	QPS() float32
+	// Wait returns nil if a token is taken before the Context is done.
+	Wait(ctx context.Context) error
 }
 
 type tokenBucketRateLimiter struct {
@@ -98,6 +102,10 @@ func (t *tokenBucketRateLimiter) QPS() float32 {
 	return t.qps
 }
 
+func (t *tokenBucketRateLimiter) Wait(ctx context.Context) error {
+	return t.limiter.Wait(ctx)
+}
+
 type fakeAlwaysRateLimiter struct{}
 
 func NewFakeAlwaysRateLimiter() RateLimiter {
@@ -116,6 +124,10 @@ func (t *fakeAlwaysRateLimiter) QPS() float32 {
 	return 1
 }
 
+func (t *fakeAlwaysRateLimiter) Wait(ctx context.Context) error {
+	return nil
+}
+
 type fakeNeverRateLimiter struct {
 	wg sync.WaitGroup
 }
@@ -141,3 +153,7 @@ func (t *fakeNeverRateLimiter) Accept() {
 func (t *fakeNeverRateLimiter) QPS() float32 {
 	return 1
 }
+
+func (t *fakeNeverRateLimiter) Wait(ctx context.Context) error {
+	return errors.New("can not be accept")
+}

vendor/k8s.io/client-go/util/homedir/homedir.go

@@ -18,30 +18,75 @@ package homedir
 
 import (
 	"os"
+	"path/filepath"
 	"runtime"
 )
 
-// HomeDir returns the home directory for the current user
+// HomeDir returns the home directory for the current user.
+// On Windows:
+// 1. the first of %HOME%, %HOMEDRIVE%%HOMEPATH%, %USERPROFILE% containing a `.kube\config` file is returned.
+// 2. if none of those locations contain a `.kube\config` file, the first of %HOME%, %USERPROFILE%, %HOMEDRIVE%%HOMEPATH% that exists and is writeable is returned.
+// 3. if none of those locations are writeable, the first of %HOME%, %USERPROFILE%, %HOMEDRIVE%%HOMEPATH% that exists is returned.
+// 4. if none of those locations exists, the first of %HOME%, %USERPROFILE%, %HOMEDRIVE%%HOMEPATH% that is set is returned.
 func HomeDir() string {
 	if runtime.GOOS == "windows" {
-
-		// First prefer the HOME environmental variable
-		if home := os.Getenv("HOME"); len(home) > 0 {
-			if _, err := os.Stat(home); err == nil {
-				return home
-			}
-		}
+		home := os.Getenv("HOME")
+		homeDriveHomePath := ""
 		if homeDrive, homePath := os.Getenv("HOMEDRIVE"), os.Getenv("HOMEPATH"); len(homeDrive) > 0 && len(homePath) > 0 {
-			homeDir := homeDrive + homePath
-			if _, err := os.Stat(homeDir); err == nil {
-				return homeDir
+			homeDriveHomePath = homeDrive + homePath
+		}
+		userProfile := os.Getenv("USERPROFILE")
+
+		// Return first of %HOME%, %HOMEDRIVE%/%HOMEPATH%, %USERPROFILE% that contains a `.kube\config` file.
+		// %HOMEDRIVE%/%HOMEPATH% is preferred over %USERPROFILE% for backwards-compatibility.
+		for _, p := range []string{home, homeDriveHomePath, userProfile} {
+			if len(p) == 0 {
+				continue
+			}
+			if _, err := os.Stat(filepath.Join(p, ".kube", "config")); err != nil {
+				continue
+			}
+			return p
+		}
+
+		firstSetPath := ""
+		firstExistingPath := ""
+
+		// Prefer %USERPROFILE% over %HOMEDRIVE%/%HOMEPATH% for compatibility with other auth-writing tools
+		for _, p := range []string{home, userProfile, homeDriveHomePath} {
+			if len(p) == 0 {
+				continue
+			}
+			if len(firstSetPath) == 0 {
+				// remember the first path that is set
+				firstSetPath = p
+			}
+			info, err := os.Stat(p)
+			if err != nil {
+				continue
+			}
+			if len(firstExistingPath) == 0 {
+				// remember the first path that exists
+				firstExistingPath = p
+			}
+			if info.IsDir() && info.Mode().Perm()&(1<<(uint(7))) != 0 {
+				// return first path that is writeable
+				return p
 			}
 		}
-		if userProfile := os.Getenv("USERPROFILE"); len(userProfile) > 0 {
-			if _, err := os.Stat(userProfile); err == nil {
-				return userProfile
-			}
+
+		// If none are writeable, return first location that exists
+		if len(firstExistingPath) > 0 {
+			return firstExistingPath
 		}
+
+		// If none exist, return first location that is set
+		if len(firstSetPath) > 0 {
+			return firstSetPath
+		}
+
+		// We've got nothing
+		return ""
 	}
 	return os.Getenv("HOME")
 }

vendor/k8s.io/client-go/util/jsonpath/parser.go

@@ -37,7 +37,6 @@ type Parser struct {
 	Name  string
 	Root  *ListNode
 	input string
-	cur   *ListNode
 	pos   int
 	start int
 	width int
@@ -186,8 +185,7 @@ func (p *Parser) parseInsideAction(cur *ListNode) error {
 func (p *Parser) parseRightDelim(cur *ListNode) error {
 	p.pos += len(rightDelim)
 	p.consumeText()
-	cur = p.Root
-	return p.parseText(cur)
+	return p.parseText(p.Root)
 }
 
 // parseIdentifier scans build-in keywords, like "range" "end"
@@ -231,7 +229,7 @@ func (p *Parser) parseRecursive(cur *ListNode) error {
 func (p *Parser) parseNumber(cur *ListNode) error {
 	r := p.peek()
 	if r == '+' || r == '-' {
-		r = p.next()
+		p.next()
 	}
 	for {
 		r = p.next()

vendor/k8s.io/client-go/util/retry/util.go

@@ -42,12 +42,12 @@ var DefaultBackoff = wait.Backoff{
 	Jitter:   0.1,
 }
 
-// RetryConflict executes the provided function repeatedly, retrying if the server returns a conflicting
-// write. Callers should preserve previous executions if they wish to retry changes. It performs an
+// OnError executes the provided function repeatedly, retrying if the server returns a specified
+// error. Callers should preserve previous executions if they wish to retry changes. It performs an
 // exponential backoff.
 //
 //     var pod *api.Pod
-//     err := RetryOnConflict(DefaultBackoff, func() (err error) {
+//     err := retry.OnError(DefaultBackoff, errors.IsConflict, func() (err error) {
 //       pod, err = c.Pods("mynamespace").UpdateStatus(podStatus)
 //       return
 //     })
@@ -58,14 +58,14 @@ var DefaultBackoff = wait.Backoff{
 //     ...
 //
 // TODO: Make Backoff an interface?
-func RetryOnConflict(backoff wait.Backoff, fn func() error) error {
+func OnError(backoff wait.Backoff, errorFunc func(error) bool, fn func() error) error {
 	var lastConflictErr error
 	err := wait.ExponentialBackoff(backoff, func() (bool, error) {
 		err := fn()
 		switch {
 		case err == nil:
 			return true, nil
-		case errors.IsConflict(err):
+		case errorFunc(err):
 			lastConflictErr = err
 			return false, nil
 		default:
@@ -77,3 +77,8 @@ func RetryOnConflict(backoff wait.Backoff, fn func() error) error {
 	}
 	return err
 }
+
+// RetryOnConflict executes the function function repeatedly, retrying if the server returns a conflicting
+func RetryOnConflict(backoff wait.Backoff, fn func() error) error {
+	return OnError(backoff, errors.IsConflict, fn)
+}

vendor/k8s.io/client-go/util/workqueue/delaying_queue.go

@@ -44,13 +44,12 @@ func NewNamedDelayingQueue(name string) DelayingInterface {
 
 func newDelayingQueue(clock clock.Clock, name string) DelayingInterface {
 	ret := &delayingType{
-		Interface:         NewNamed(name),
-		clock:             clock,
-		heartbeat:         clock.NewTicker(maxWait),
-		stopCh:            make(chan struct{}),
-		waitingForAddCh:   make(chan *waitFor, 1000),
-		metrics:           newRetryMetrics(name),
-		deprecatedMetrics: newDeprecatedRetryMetrics(name),
+		Interface:       NewNamed(name),
+		clock:           clock,
+		heartbeat:       clock.NewTicker(maxWait),
+		stopCh:          make(chan struct{}),
+		waitingForAddCh: make(chan *waitFor, 1000),
+		metrics:         newRetryMetrics(name),
 	}
 
 	go ret.waitingLoop()
@@ -77,8 +76,7 @@ type delayingType struct {
 	waitingForAddCh chan *waitFor
 
 	// metrics counts the number of retries
-	metrics           retryMetrics
-	deprecatedMetrics retryMetrics
+	metrics retryMetrics
 }
 
 // waitFor holds the data to add and the time it should be added
@@ -154,7 +152,6 @@ func (q *delayingType) AddAfter(item interface{}, duration time.Duration) {
 	}
 
 	q.metrics.retry()
-	q.deprecatedMetrics.retry()
 
 	// immediately add things with no delay
 	if duration <= 0 {

vendor/k8s.io/client-go/util/workqueue/doc.go

@@ -23,4 +23,4 @@ limitations under the License.
 //  * Multiple consumers and producers. In particular, it is allowed for an
 //      item to be reenqueued while it is being processed.
 //  * Shutdown notifications.
-package workqueue
+package workqueue // import "k8s.io/client-go/util/workqueue"

vendor/k8s.io/client-go/util/workqueue/metrics.go

@@ -87,14 +87,6 @@ type defaultQueueMetrics struct {
 	// how long have current threads been working?
 	unfinishedWorkSeconds   SettableGaugeMetric
 	longestRunningProcessor SettableGaugeMetric
-
-	// TODO(danielqsj): Remove the following metrics, they are deprecated
-	deprecatedDepth                   GaugeMetric
-	deprecatedAdds                    CounterMetric
-	deprecatedLatency                 SummaryMetric
-	deprecatedWorkDuration            SummaryMetric
-	deprecatedUnfinishedWorkSeconds   SettableGaugeMetric
-	deprecatedLongestRunningProcessor SettableGaugeMetric
 }
 
 func (m *defaultQueueMetrics) add(item t) {
@@ -103,9 +95,7 @@ func (m *defaultQueueMetrics) add(item t) {
 	}
 
 	m.adds.Inc()
-	m.deprecatedAdds.Inc()
 	m.depth.Inc()
-	m.deprecatedDepth.Inc()
 	if _, exists := m.addTimes[item]; !exists {
 		m.addTimes[item] = m.clock.Now()
 	}
@@ -117,11 +107,9 @@ func (m *defaultQueueMetrics) get(item t) {
 	}
 
 	m.depth.Dec()
-	m.deprecatedDepth.Dec()
 	m.processingStartTimes[item] = m.clock.Now()
 	if startTime, exists := m.addTimes[item]; exists {
 		m.latency.Observe(m.sinceInSeconds(startTime))
-		m.deprecatedLatency.Observe(m.sinceInMicroseconds(startTime))
 		delete(m.addTimes, item)
 	}
 }
@@ -133,7 +121,6 @@ func (m *defaultQueueMetrics) done(item t) {
 
 	if startTime, exists := m.processingStartTimes[item]; exists {
 		m.workDuration.Observe(m.sinceInSeconds(startTime))
-		m.deprecatedWorkDuration.Observe(m.sinceInMicroseconds(startTime))
 		delete(m.processingStartTimes, item)
 	}
 }
@@ -153,9 +140,7 @@ func (m *defaultQueueMetrics) updateUnfinishedWork() {
 	// Convert to seconds; microseconds is unhelpfully granular for this.
 	total /= 1000000
 	m.unfinishedWorkSeconds.Set(total)
-	m.deprecatedUnfinishedWorkSeconds.Set(total)
 	m.longestRunningProcessor.Set(oldest / 1000000)
-	m.deprecatedLongestRunningProcessor.Set(oldest) // in microseconds.
 }
 
 type noMetrics struct{}
@@ -200,13 +185,6 @@ type MetricsProvider interface {
 	NewUnfinishedWorkSecondsMetric(name string) SettableGaugeMetric
 	NewLongestRunningProcessorSecondsMetric(name string) SettableGaugeMetric
 	NewRetriesMetric(name string) CounterMetric
-	NewDeprecatedDepthMetric(name string) GaugeMetric
-	NewDeprecatedAddsMetric(name string) CounterMetric
-	NewDeprecatedLatencyMetric(name string) SummaryMetric
-	NewDeprecatedWorkDurationMetric(name string) SummaryMetric
-	NewDeprecatedUnfinishedWorkSecondsMetric(name string) SettableGaugeMetric
-	NewDeprecatedLongestRunningProcessorMicrosecondsMetric(name string) SettableGaugeMetric
-	NewDeprecatedRetriesMetric(name string) CounterMetric
 }
 
 type noopMetricsProvider struct{}
@@ -239,34 +217,6 @@ func (_ noopMetricsProvider) NewRetriesMetric(name string) CounterMetric {
 	return noopMetric{}
 }
 
-func (_ noopMetricsProvider) NewDeprecatedDepthMetric(name string) GaugeMetric {
-	return noopMetric{}
-}
-
-func (_ noopMetricsProvider) NewDeprecatedAddsMetric(name string) CounterMetric {
-	return noopMetric{}
-}
-
-func (_ noopMetricsProvider) NewDeprecatedLatencyMetric(name string) SummaryMetric {
-	return noopMetric{}
-}
-
-func (_ noopMetricsProvider) NewDeprecatedWorkDurationMetric(name string) SummaryMetric {
-	return noopMetric{}
-}
-
-func (_ noopMetricsProvider) NewDeprecatedUnfinishedWorkSecondsMetric(name string) SettableGaugeMetric {
-	return noopMetric{}
-}
-
-func (_ noopMetricsProvider) NewDeprecatedLongestRunningProcessorMicrosecondsMetric(name string) SettableGaugeMetric {
-	return noopMetric{}
-}
-
-func (_ noopMetricsProvider) NewDeprecatedRetriesMetric(name string) CounterMetric {
-	return noopMetric{}
-}
-
 var globalMetricsFactory = queueMetricsFactory{
 	metricsProvider: noopMetricsProvider{},
 }
@@ -289,21 +239,15 @@ func (f *queueMetricsFactory) newQueueMetrics(name string, clock clock.Clock) qu
 		return noMetrics{}
 	}
 	return &defaultQueueMetrics{
-		clock:                             clock,
-		depth:                             mp.NewDepthMetric(name),
-		adds:                              mp.NewAddsMetric(name),
-		latency:                           mp.NewLatencyMetric(name),
-		workDuration:                      mp.NewWorkDurationMetric(name),
-		unfinishedWorkSeconds:             mp.NewUnfinishedWorkSecondsMetric(name),
-		longestRunningProcessor:           mp.NewLongestRunningProcessorSecondsMetric(name),
-		deprecatedDepth:                   mp.NewDeprecatedDepthMetric(name),
-		deprecatedAdds:                    mp.NewDeprecatedAddsMetric(name),
-		deprecatedLatency:                 mp.NewDeprecatedLatencyMetric(name),
-		deprecatedWorkDuration:            mp.NewDeprecatedWorkDurationMetric(name),
-		deprecatedUnfinishedWorkSeconds:   mp.NewDeprecatedUnfinishedWorkSecondsMetric(name),
-		deprecatedLongestRunningProcessor: mp.NewDeprecatedLongestRunningProcessorMicrosecondsMetric(name),
-		addTimes:                          map[t]time.Time{},
-		processingStartTimes:              map[t]time.Time{},
+		clock:                   clock,
+		depth:                   mp.NewDepthMetric(name),
+		adds:                    mp.NewAddsMetric(name),
+		latency:                 mp.NewLatencyMetric(name),
+		workDuration:            mp.NewWorkDurationMetric(name),
+		unfinishedWorkSeconds:   mp.NewUnfinishedWorkSecondsMetric(name),
+		longestRunningProcessor: mp.NewLongestRunningProcessorSecondsMetric(name),
+		addTimes:                map[t]time.Time{},
+		processingStartTimes:    map[t]time.Time{},
 	}
 }
 
@@ -317,16 +261,6 @@ func newRetryMetrics(name string) retryMetrics {
 	}
 }
 
-func newDeprecatedRetryMetrics(name string) retryMetrics {
-	var ret *defaultRetryMetrics
-	if len(name) == 0 {
-		return ret
-	}
-	return &defaultRetryMetrics{
-		retries: globalMetricsFactory.metricsProvider.NewDeprecatedRetriesMetric(name),
-	}
-}
-
 // SetProvider sets the metrics provider for all subsequently created work
 // queues. Only the first call has an effect.
 func SetProvider(metricsProvider MetricsProvider) {