Update custom-metrics-apiserver and metrics-server

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

@@ -77,11 +77,6 @@ func (d *Dialer) DialContext(ctx context.Context, network, address string) (net.
 
 	closable := &closableConn{Conn: conn}
 
-	// Start tracking the connection
-	d.mu.Lock()
-	d.conns[closable] = struct{}{}
-	d.mu.Unlock()
-
 	// When the connection is closed, remove it from the map. This will
 	// be no-op if the connection isn't in the map, e.g. if CloseAll()
 	// is called.
@@ -91,6 +86,11 @@ func (d *Dialer) DialContext(ctx context.Context, network, address string) (net.
 		d.mu.Unlock()
 	}
 
+	// Start tracking the connection
+	d.mu.Lock()
+	d.conns[closable] = struct{}{}
+	d.mu.Unlock()
+
 	return closable, nil
 }
 

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

@@ -1,4 +0,0 @@
-# See the OWNERS docs at https://go.k8s.io/owners
-
-reviewers:
-- caesarxuchao

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

@@ -1,105 +0,0 @@
-/*
-Copyright 2016 The Kubernetes Authors.
-
-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 retry
-
-import (
-	"time"
-
-	"k8s.io/apimachinery/pkg/api/errors"
-	"k8s.io/apimachinery/pkg/util/wait"
-)
-
-// DefaultRetry is the recommended retry for a conflict where multiple clients
-// are making changes to the same resource.
-var DefaultRetry = wait.Backoff{
-	Steps:    5,
-	Duration: 10 * time.Millisecond,
-	Factor:   1.0,
-	Jitter:   0.1,
-}
-
-// DefaultBackoff is the recommended backoff for a conflict where a client
-// may be attempting to make an unrelated modification to a resource under
-// active management by one or more controllers.
-var DefaultBackoff = wait.Backoff{
-	Steps:    4,
-	Duration: 10 * time.Millisecond,
-	Factor:   5.0,
-	Jitter:   0.1,
-}
-
-// OnError allows the caller to retry fn in case the error returned by fn is retriable
-// according to the provided function. backoff defines the maximum retries and the wait
-// interval between two retries.
-func OnError(backoff wait.Backoff, retriable func(error) bool, fn func() error) error {
-	var lastErr error
-	err := wait.ExponentialBackoff(backoff, func() (bool, error) {
-		err := fn()
-		switch {
-		case err == nil:
-			return true, nil
-		case retriable(err):
-			lastErr = err
-			return false, nil
-		default:
-			return false, err
-		}
-	})
-	if err == wait.ErrWaitTimeout {
-		err = lastErr
-	}
-	return err
-}
-
-// RetryOnConflict is used to make an update to a resource when you have to worry about
-// conflicts caused by other code making unrelated updates to the resource at the same
-// time. fn should fetch the resource to be modified, make appropriate changes to it, try
-// to update it, and return (unmodified) the error from the update function. On a
-// successful update, RetryOnConflict will return nil. If the update function returns a
-// "Conflict" error, RetryOnConflict will wait some amount of time as described by
-// backoff, and then try again. On a non-"Conflict" error, or if it retries too many times
-// and gives up, RetryOnConflict will return an error to the caller.
-//
-//     err := retry.RetryOnConflict(retry.DefaultRetry, func() error {
-//         // Fetch the resource here; you need to refetch it on every try, since
-//         // if you got a conflict on the last update attempt then you need to get
-//         // the current version before making your own changes.
-//         pod, err := c.Pods("mynamespace").Get(name, metav1.GetOptions{})
-//         if err ! nil {
-//             return err
-//         }
-//
-//         // Make whatever updates to the resource are needed
-//         pod.Status.Phase = v1.PodFailed
-//
-//         // Try to update
-//         _, err = c.Pods("mynamespace").UpdateStatus(pod)
-//         // You have to return err itself here (not wrapped inside another error)
-//         // so that RetryOnConflict can identify it correctly.
-//         return err
-//     })
-//     if err != nil {
-//         // May be conflict if max retries were hit, or may be something unrelated
-//         // like permissions or a network error
-//         return err
-//     }
-//     ...
-//
-// TODO: Make Backoff an interface?
-func RetryOnConflict(backoff wait.Backoff, fn func() error) error {
-	return OnError(backoff, errors.IsConflict, fn)
-}

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

@@ -62,6 +62,54 @@ func (r *BucketRateLimiter) NumRequeues(item interface{}) int {
 func (r *BucketRateLimiter) Forget(item interface{}) {
 }
 
+// ItemBucketRateLimiter implements a workqueue ratelimiter API using standard rate.Limiter.
+// Each key is using a separate limiter.
+type ItemBucketRateLimiter struct {
+	r     rate.Limit
+	burst int
+
+	limitersLock sync.Mutex
+	limiters     map[interface{}]*rate.Limiter
+}
+
+var _ RateLimiter = &ItemBucketRateLimiter{}
+
+// NewItemBucketRateLimiter creates new ItemBucketRateLimiter instance.
+func NewItemBucketRateLimiter(r rate.Limit, burst int) *ItemBucketRateLimiter {
+	return &ItemBucketRateLimiter{
+		r:        r,
+		burst:    burst,
+		limiters: make(map[interface{}]*rate.Limiter),
+	}
+}
+
+// When returns a time.Duration which we need to wait before item is processed.
+func (r *ItemBucketRateLimiter) When(item interface{}) time.Duration {
+	r.limitersLock.Lock()
+	defer r.limitersLock.Unlock()
+
+	limiter, ok := r.limiters[item]
+	if !ok {
+		limiter = rate.NewLimiter(r.r, r.burst)
+		r.limiters[item] = limiter
+	}
+
+	return limiter.Reserve().Delay()
+}
+
+// NumRequeues returns always 0 (doesn't apply to ItemBucketRateLimiter).
+func (r *ItemBucketRateLimiter) NumRequeues(item interface{}) int {
+	return 0
+}
+
+// Forget removes item from the internal state.
+func (r *ItemBucketRateLimiter) Forget(item interface{}) {
+	r.limitersLock.Lock()
+	defer r.limitersLock.Unlock()
+
+	delete(r.limiters, item)
+}
+
 // ItemExponentialFailureRateLimiter does a simple baseDelay*2^<num-failures> limit
 // dealing with max failures and expiration are up to the caller
 type ItemExponentialFailureRateLimiter struct {

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

@@ -131,16 +131,14 @@ func (m *defaultQueueMetrics) updateUnfinishedWork() {
 	var total float64
 	var oldest float64
 	for _, t := range m.processingStartTimes {
-		age := m.sinceInMicroseconds(t)
+		age := m.sinceInSeconds(t)
 		total += age
 		if age > oldest {
 			oldest = age
 		}
 	}
-	// Convert to seconds; microseconds is unhelpfully granular for this.
-	total /= 1000000
 	m.unfinishedWorkSeconds.Set(total)
-	m.longestRunningProcessor.Set(oldest / 1000000)
+	m.longestRunningProcessor.Set(oldest)
 }
 
 type noMetrics struct{}
@@ -150,11 +148,6 @@ func (noMetrics) get(item t)            {}
 func (noMetrics) done(item t)           {}
 func (noMetrics) updateUnfinishedWork() {}
 
-// Gets the time since the specified start in microseconds.
-func (m *defaultQueueMetrics) sinceInMicroseconds(start time.Time) float64 {
-	return float64(m.clock.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds())
-}
-
 // Gets the time since the specified start in seconds.
 func (m *defaultQueueMetrics) sinceInSeconds(start time.Time) float64 {
 	return m.clock.Since(start).Seconds()