vendor/github.com/cenkalti/backoff/ticker.go → vendor/github.com/cenkalti/backoff/v4/ticker.go

 package backoff
 
 import (
+	"context"
 	"sync"
 	"time"
 )
@@ -12,7 +13,9 @@ import (
 type Ticker struct {
 	C        <-chan time.Time
 	c        chan time.Time
-	b        BackOffContext
+	b        BackOff
+	ctx      context.Context
+	timer    Timer
 	stop     chan struct{}
 	stopOnce sync.Once
 }
@@ -24,12 +27,23 @@ type Ticker struct {
 // provided backoff policy (notably calling NextBackOff or Reset)
 // while the ticker is running.
 func NewTicker(b BackOff) *Ticker {
+	return NewTickerWithTimer(b, &defaultTimer{})
+}
+
+// NewTickerWithTimer returns a new Ticker with a custom timer.
+// A default timer that uses system timer is used when nil is passed.
+func NewTickerWithTimer(b BackOff, timer Timer) *Ticker {
+	if timer == nil {
+		timer = &defaultTimer{}
+	}
 	c := make(chan time.Time)
 	t := &Ticker{
-		C:    c,
-		c:    c,
-		b:    ensureContext(b),
-		stop: make(chan struct{}),
+		C:     c,
+		c:     c,
+		b:     b,
+		ctx:   getContext(b),
+		timer: timer,
+		stop:  make(chan struct{}),
 	}
 	t.b.Reset()
 	go t.run()
@@ -59,7 +73,7 @@ func (t *Ticker) run() {
 		case <-t.stop:
 			t.c = nil // Prevent future ticks from being sent to the channel.
 			return
-		case <-t.b.Context().Done():
+		case <-t.ctx.Done():
 			return
 		}
 	}
@@ -78,5 +92,6 @@ func (t *Ticker) send(tick time.Time) <-chan time.Time {
 		return nil
 	}
 
-	return time.After(next)
+	t.timer.Start(next)
+	return t.timer.C()
 }

vendor/github.com/cenkalti/backoff/v4/timer.go

+package backoff
+
+import "time"
+
+type Timer interface {
+	Start(duration time.Duration)
+	Stop()
+	C() <-chan time.Time
+}
+
+// defaultTimer implements Timer interface using time.Timer
+type defaultTimer struct {
+	timer *time.Timer
+}
+
+// C returns the timers channel which receives the current time when the timer fires.
+func (t *defaultTimer) C() <-chan time.Time {
+	return t.timer.C
+}
+
+// Start starts the timer to fire after the given duration
+func (t *defaultTimer) Start(duration time.Duration) {
+	if t.timer == nil {
+		t.timer = time.NewTimer(duration)
+	} else {
+		t.timer.Reset(duration)
+	}
+}
+
+// Stop is called when the timer is not used anymore and resources may be freed.
+func (t *defaultTimer) Stop() {
+	if t.timer != nil {
+		t.timer.Stop()
+	}
+}

vendor/github.com/cenkalti/backoff/tries.go → vendor/github.com/cenkalti/backoff/v4/tries.go

@@ -20,6 +20,9 @@ type backOffTries struct {
 }
 
 func (b *backOffTries) NextBackOff() time.Duration {
+	if b.maxTries == 0 {
+		return Stop
+	}
 	if b.maxTries > 0 {
 		if b.maxTries <= b.numTries {
 			return Stop

vendor/github.com/cespare/xxhash/v2/LICENSE.txt

+Copyright (c) 2016 Caleb Spare
+
+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/coreos/go-systemd/v22/NOTICE

+CoreOS Project
+Copyright 2018 CoreOS, Inc
+
+This product includes software developed at CoreOS, Inc.
+(http://www.coreos.com/).