diff --git a/vendor/github.com/jonboulle/clockwork/.editorconfig b/vendor/github.com/jonboulle/clockwork/.editorconfig
new file mode 100644
index 0000000..4492e9f
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.go]
+indent_style = tab
diff --git a/vendor/github.com/jonboulle/clockwork/.gitignore b/vendor/github.com/jonboulle/clockwork/.gitignore
new file mode 100644
index 0000000..00852bd
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/.gitignore
@@ -0,0 +1,27 @@
+/.idea/
+
+# 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
+*.test
+
+*.swp
diff --git a/vendor/github.com/jonboulle/clockwork/LICENSE b/vendor/github.com/jonboulle/clockwork/LICENSE
new file mode 100644
index 0000000..5c304d1
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/LICENSE
@@ -0,0 +1,201 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+      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.
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+      the terms of any separate license agreement you may have executed
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+
+   6. Trademarks. This License does not grant permission to use the trade
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+
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+
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+   See the License for the specific language governing permissions and
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diff --git a/vendor/github.com/jonboulle/clockwork/README.md b/vendor/github.com/jonboulle/clockwork/README.md
new file mode 100644
index 0000000..5e9d472
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/README.md
@@ -0,0 +1,85 @@
+# clockwork
+
+[![Mentioned in Awesome Go](https://awesome.re/mentioned-badge-flat.svg)](https://github.com/avelino/awesome-go#utilities)
+
+[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/jonboulle/clockwork/ci.yaml?style=flat-square)](https://github.com/jonboulle/clockwork/actions?query=workflow%3ACI)
+[![Go Report Card](https://goreportcard.com/badge/github.com/jonboulle/clockwork?style=flat-square)](https://goreportcard.com/report/github.com/jonboulle/clockwork)
+![Go Version](https://img.shields.io/badge/go%20version-%3E=1.15-61CFDD.svg?style=flat-square)
+[![go.dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/mod/github.com/jonboulle/clockwork)
+
+**A simple fake clock for Go.**
+
+
+## Usage
+
+Replace uses of the `time` package with the `clockwork.Clock` interface instead.
+
+For example, instead of using `time.Sleep` directly:
+
+```go
+func myFunc() {
+	time.Sleep(3 * time.Second)
+	doSomething()
+}
+```
+
+Inject a clock and use its `Sleep` method instead:
+
+```go
+func myFunc(clock clockwork.Clock) {
+	clock.Sleep(3 * time.Second)
+	doSomething()
+}
+```
+
+Now you can easily test `myFunc` with a `FakeClock`:
+
+```go
+func TestMyFunc(t *testing.T) {
+	ctx := context.Background()
+	c := clockwork.NewFakeClock()
+
+	// Start our sleepy function
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		myFunc(c)
+		wg.Done()
+	}()
+
+	// Ensure we wait until myFunc is waiting on the clock.
+	// Use a context to avoid blocking forever if something
+	// goes wrong.
+	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
+	defer cancel()
+	c.BlockUntilContext(ctx, 1)
+
+	assertState()
+
+	// Advance the FakeClock forward in time
+	c.Advance(3 * time.Second)
+
+	// Wait until the function completes
+	wg.Wait()
+
+	assertState()
+}
+```
+
+and in production builds, simply inject the real clock instead:
+
+```go
+myFunc(clockwork.NewRealClock())
+```
+
+See [example_test.go](example_test.go) for a full example.
+
+
+# Credits
+
+clockwork is inspired by @wickman's [threaded fake clock](https://gist.github.com/wickman/3840816), and the [Golang playground](https://blog.golang.org/playground#TOC_3.1.)
+
+
+## License
+
+Apache License, Version 2.0. Please see [License File](LICENSE) for more information.
diff --git a/vendor/github.com/jonboulle/clockwork/SECURITY.md b/vendor/github.com/jonboulle/clockwork/SECURITY.md
new file mode 100644
index 0000000..0efcad9
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/SECURITY.md
@@ -0,0 +1,19 @@
+# Security Policy
+
+If you have discovered a security vulnerability in this project, please report it
+privately. **Do not disclose it as a public issue.** This gives me time to work with you
+to fix the issue before public exposure, reducing the chance that the exploit will be
+used before a patch is released.
+
+You may submit the report in the following ways:
+
+- send an email to ???@???; and/or
+- send a [private vulnerability report](https://github.com/jonboulle/clockwork/security/advisories/new)
+
+Please provide the following information in your report:
+
+- A description of the vulnerability and its impact
+- How to reproduce the issue
+
+This project is maintained by a single maintainer on a reasonable-effort basis. As such,
+please give me 90 days to work on a fix before public exposure.
diff --git a/vendor/github.com/jonboulle/clockwork/clockwork.go b/vendor/github.com/jonboulle/clockwork/clockwork.go
new file mode 100644
index 0000000..85a9934
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/clockwork.go
@@ -0,0 +1,319 @@
+// Package clockwork contains a simple fake clock for Go.
+package clockwork
+
+import (
+	"context"
+	"errors"
+	"slices"
+	"sync"
+	"time"
+)
+
+// Clock provides an interface that packages can use instead of directly using
+// the [time] module, so that chronology-related behavior can be tested.
+type Clock interface {
+	After(d time.Duration) <-chan time.Time
+	Sleep(d time.Duration)
+	Now() time.Time
+	Since(t time.Time) time.Duration
+	Until(t time.Time) time.Duration
+	NewTicker(d time.Duration) Ticker
+	NewTimer(d time.Duration) Timer
+	AfterFunc(d time.Duration, f func()) Timer
+}
+
+// NewRealClock returns a Clock which simply delegates calls to the actual time
+// package; it should be used by packages in production.
+func NewRealClock() Clock {
+	return &realClock{}
+}
+
+type realClock struct{}
+
+func (rc *realClock) After(d time.Duration) <-chan time.Time {
+	return time.After(d)
+}
+
+func (rc *realClock) Sleep(d time.Duration) {
+	time.Sleep(d)
+}
+
+func (rc *realClock) Now() time.Time {
+	return time.Now()
+}
+
+func (rc *realClock) Since(t time.Time) time.Duration {
+	return rc.Now().Sub(t)
+}
+
+func (rc *realClock) Until(t time.Time) time.Duration {
+	return t.Sub(rc.Now())
+}
+
+func (rc *realClock) NewTicker(d time.Duration) Ticker {
+	return realTicker{time.NewTicker(d)}
+}
+
+func (rc *realClock) NewTimer(d time.Duration) Timer {
+	return realTimer{time.NewTimer(d)}
+}
+
+func (rc *realClock) AfterFunc(d time.Duration, f func()) Timer {
+	return realTimer{time.AfterFunc(d, f)}
+}
+
+// FakeClock provides an interface for a clock which can be manually advanced
+// through time.
+//
+// FakeClock maintains a list of "waiters," which consists of all callers
+// waiting on the underlying clock (i.e. Tickers and Timers including callers of
+// Sleep or After). Users can call BlockUntil to block until the clock has an
+// expected number of waiters.
+type FakeClock struct {
+	// l protects all attributes of the clock, including all attributes of all
+	// waiters and blockers.
+	l        sync.RWMutex
+	waiters  []expirer
+	blockers []*blocker
+	time     time.Time
+}
+
+// NewFakeClock returns a FakeClock implementation which can be
+// manually advanced through time for testing. The initial time of the
+// FakeClock will be the current system time.
+//
+// Tests that require a deterministic time must use NewFakeClockAt.
+func NewFakeClock() *FakeClock {
+	return NewFakeClockAt(time.Now())
+}
+
+// NewFakeClockAt returns a FakeClock initialised at the given time.Time.
+func NewFakeClockAt(t time.Time) *FakeClock {
+	return &FakeClock{
+		time: t,
+	}
+}
+
+// blocker is a caller of BlockUntil.
+type blocker struct {
+	count int
+
+	// ch is closed when the underlying clock has the specified number of blockers.
+	ch chan struct{}
+}
+
+// expirer is a timer or ticker that expires at some point in the future.
+type expirer interface {
+	// expire the expirer at the given time, returning the desired duration until
+	// the next expiration, if any.
+	expire(now time.Time) (next *time.Duration)
+
+	// Get and set the expiration time.
+	expiration() time.Time
+	setExpiration(time.Time)
+}
+
+// After mimics [time.After]; it waits for the given duration to elapse on the
+// fakeClock, then sends the current time on the returned channel.
+func (fc *FakeClock) After(d time.Duration) <-chan time.Time {
+	return fc.NewTimer(d).Chan()
+}
+
+// Sleep blocks until the given duration has passed on the fakeClock.
+func (fc *FakeClock) Sleep(d time.Duration) {
+	<-fc.After(d)
+}
+
+// Now returns the current time of the fakeClock
+func (fc *FakeClock) Now() time.Time {
+	fc.l.RLock()
+	defer fc.l.RUnlock()
+	return fc.time
+}
+
+// Since returns the duration that has passed since the given time on the
+// fakeClock.
+func (fc *FakeClock) Since(t time.Time) time.Duration {
+	return fc.Now().Sub(t)
+}
+
+// Until returns the duration that has to pass from the given time on the fakeClock
+// to reach the given time.
+func (fc *FakeClock) Until(t time.Time) time.Duration {
+	return t.Sub(fc.Now())
+}
+
+// NewTicker returns a Ticker that will expire only after calls to
+// FakeClock.Advance() have moved the clock past the given duration.
+//
+// The duration d must be greater than zero; if not, NewTicker will panic.
+func (fc *FakeClock) NewTicker(d time.Duration) Ticker {
+	// Maintain parity with
+	// https://cs.opensource.google/go/go/+/refs/tags/go1.20.3:src/time/tick.go;l=23-25
+	if d <= 0 {
+		panic(errors.New("non-positive interval for NewTicker"))
+	}
+	ft := newFakeTicker(fc, d)
+	fc.l.Lock()
+	defer fc.l.Unlock()
+	fc.setExpirer(ft, d)
+	return ft
+}
+
+// NewTimer returns a Timer that will fire only after calls to
+// fakeClock.Advance() have moved the clock past the given duration.
+func (fc *FakeClock) NewTimer(d time.Duration) Timer {
+	t, _ := fc.newTimer(d, nil)
+	return t
+}
+
+// AfterFunc mimics [time.AfterFunc]; it returns a Timer that will invoke the
+// given function only after calls to fakeClock.Advance() have moved the clock
+// past the given duration.
+func (fc *FakeClock) AfterFunc(d time.Duration, f func()) Timer {
+	t, _ := fc.newTimer(d, f)
+	return t
+}
+
+// newTimer returns a new timer using an optional afterFunc and the time that
+// timer expires.
+func (fc *FakeClock) newTimer(d time.Duration, afterfunc func()) (*fakeTimer, time.Time) {
+	ft := newFakeTimer(fc, afterfunc)
+	fc.l.Lock()
+	defer fc.l.Unlock()
+	fc.setExpirer(ft, d)
+	return ft, ft.expiration()
+}
+
+// newTimerAtTime is like newTimer, but uses a time instead of a duration.
+//
+// It is used to ensure FakeClock's lock is held constant through calling
+// fc.After(t.Sub(fc.Now())). It should not be exposed externally.
+func (fc *FakeClock) newTimerAtTime(t time.Time, afterfunc func()) *fakeTimer {
+	ft := newFakeTimer(fc, afterfunc)
+	fc.l.Lock()
+	defer fc.l.Unlock()
+	fc.setExpirer(ft, t.Sub(fc.time))
+	return ft
+}
+
+// Advance advances fakeClock to a new point in time, ensuring waiters and
+// blockers are notified appropriately before returning.
+func (fc *FakeClock) Advance(d time.Duration) {
+	fc.l.Lock()
+	defer fc.l.Unlock()
+	end := fc.time.Add(d)
+	// Expire the earliest waiter until the earliest waiter's expiration is after
+	// end.
+	//
+	// We don't iterate because the callback of the waiter might register a new
+	// waiter, so the list of waiters might change as we execute this.
+	for len(fc.waiters) > 0 && !end.Before(fc.waiters[0].expiration()) {
+		w := fc.waiters[0]
+		fc.waiters = fc.waiters[1:]
+
+		// Use the waiter's expiration as the current time for this expiration.
+		now := w.expiration()
+		fc.time = now
+		if d := w.expire(now); d != nil {
+			// Set the new expiration if needed.
+			fc.setExpirer(w, *d)
+		}
+	}
+	fc.time = end
+}
+
+// BlockUntil blocks until the FakeClock has the given number of waiters.
+//
+// Prefer BlockUntilContext in new code, which offers context cancellation to
+// prevent deadlock.
+//
+// Deprecated: New code should prefer BlockUntilContext.
+func (fc *FakeClock) BlockUntil(n int) {
+	fc.BlockUntilContext(context.TODO(), n)
+}
+
+// BlockUntilContext blocks until the fakeClock has the given number of waiters
+// or the context is cancelled.
+func (fc *FakeClock) BlockUntilContext(ctx context.Context, n int) error {
+	b := fc.newBlocker(n)
+	if b == nil {
+		return nil
+	}
+
+	select {
+	case <-b.ch:
+		return nil
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+}
+
+func (fc *FakeClock) newBlocker(n int) *blocker {
+	fc.l.Lock()
+	defer fc.l.Unlock()
+	// Fast path: we already have >= n waiters.
+	if len(fc.waiters) >= n {
+		return nil
+	}
+	// Set up a new blocker to wait for more waiters.
+	b := &blocker{
+		count: n,
+		ch:    make(chan struct{}),
+	}
+	fc.blockers = append(fc.blockers, b)
+	return b
+}
+
+// stop stops an expirer, returning true if the expirer was stopped.
+func (fc *FakeClock) stop(e expirer) bool {
+	fc.l.Lock()
+	defer fc.l.Unlock()
+	return fc.stopExpirer(e)
+}
+
+// stopExpirer stops an expirer, returning true if the expirer was stopped.
+//
+// The caller must hold fc.l.
+func (fc *FakeClock) stopExpirer(e expirer) bool {
+	idx := slices.Index(fc.waiters, e)
+	if idx == -1 {
+		return false
+	}
+	// Remove element, maintaining order, setting inaccessible elements to nil so
+	// they can be garbage collected.
+	copy(fc.waiters[idx:], fc.waiters[idx+1:])
+	fc.waiters[len(fc.waiters)-1] = nil
+	fc.waiters = fc.waiters[:len(fc.waiters)-1]
+	return true
+}
+
+// setExpirer sets an expirer to expire at a future point in time.
+//
+// The caller must hold fc.l.
+func (fc *FakeClock) setExpirer(e expirer, d time.Duration) {
+	if d.Nanoseconds() <= 0 {
+		// Special case for timers with duration <= 0: trigger immediately, never
+		// reset.
+		//
+		// Tickers never get here, they panic if d is < 0.
+		e.expire(fc.time)
+		return
+	}
+	// Add the expirer to the set of waiters and notify any blockers.
+	e.setExpiration(fc.time.Add(d))
+	fc.waiters = append(fc.waiters, e)
+	slices.SortFunc(fc.waiters, func(a, b expirer) int {
+		return a.expiration().Compare(b.expiration())
+	})
+
+	// Notify blockers of our new waiter.
+	count := len(fc.waiters)
+	fc.blockers = slices.DeleteFunc(fc.blockers, func(b *blocker) bool {
+		if b.count <= count {
+			close(b.ch)
+			return true
+		}
+		return false
+	})
+}
diff --git a/vendor/github.com/jonboulle/clockwork/context.go b/vendor/github.com/jonboulle/clockwork/context.go
new file mode 100644
index 0000000..5924261
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/context.go
@@ -0,0 +1,169 @@
+package clockwork
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+)
+
+// contextKey is private to this package so we can ensure uniqueness here. This
+// type identifies context values provided by this package.
+type contextKey string
+
+// keyClock provides a clock for injecting during tests. If absent, a real clock
+// should be used.
+var keyClock = contextKey("clock") // clockwork.Clock
+
+// AddToContext creates a derived context that references the specified clock.
+//
+// Be aware this doesn't change the behavior of standard library functions, such
+// as [context.WithTimeout] or [context.WithDeadline]. For this reason, users
+// should prefer passing explicit [clockwork.Clock] variables rather can passing
+// the clock via the context.
+func AddToContext(ctx context.Context, clock Clock) context.Context {
+	return context.WithValue(ctx, keyClock, clock)
+}
+
+// FromContext extracts a clock from the context. If not present, a real clock
+// is returned.
+func FromContext(ctx context.Context) Clock {
+	if clock, ok := ctx.Value(keyClock).(Clock); ok {
+		return clock
+	}
+	return NewRealClock()
+}
+
+// ErrFakeClockDeadlineExceeded is the error returned by [context.Context] when
+// the deadline passes on a context which uses a [FakeClock].
+//
+// It wraps a [context.DeadlineExceeded] error, i.e.:
+//
+//	// The following is true for any Context whose deadline has been exceeded,
+//	// including contexts made with clockwork.WithDeadline or clockwork.WithTimeout.
+//
+//	errors.Is(ctx.Err(), context.DeadlineExceeded)
+//
+//	// The following can only be true for contexts made
+//	// with clockwork.WithDeadline or clockwork.WithTimeout.
+//
+//	errors.Is(ctx.Err(), clockwork.ErrFakeClockDeadlineExceeded)
+var ErrFakeClockDeadlineExceeded error = fmt.Errorf("clockwork.FakeClock: %w", context.DeadlineExceeded)
+
+// WithDeadline returns a context with a deadline based on a [FakeClock].
+//
+// The returned context ignores parent cancelation if the parent was cancelled
+// with a [context.DeadlineExceeded] error. Any other error returned by the
+// parent is treated normally, cancelling the returned context.
+//
+// If the parent is cancelled with a [context.DeadlineExceeded] error, the only
+// way to then cancel the returned context is by calling the returned
+// context.CancelFunc.
+func WithDeadline(parent context.Context, clock Clock, t time.Time) (context.Context, context.CancelFunc) {
+	if fc, ok := clock.(*FakeClock); ok {
+		return newFakeClockContext(parent, t, fc.newTimerAtTime(t, nil).Chan())
+	}
+	return context.WithDeadline(parent, t)
+}
+
+// WithTimeout returns a context with a timeout based on a [FakeClock].
+//
+// The returned context follows the same behaviors as [WithDeadline].
+func WithTimeout(parent context.Context, clock Clock, d time.Duration) (context.Context, context.CancelFunc) {
+	if fc, ok := clock.(*FakeClock); ok {
+		t, deadline := fc.newTimer(d, nil)
+		return newFakeClockContext(parent, deadline, t.Chan())
+	}
+	return context.WithTimeout(parent, d)
+}
+
+// fakeClockContext implements context.Context, using a fake clock for its
+// deadline.
+//
+// It ignores parent cancellation if the parent is cancelled with
+// context.DeadlineExceeded.
+type fakeClockContext struct {
+	parent   context.Context
+	deadline time.Time // The user-facing deadline based on the fake clock's time.
+
+	// Tracks timeout/deadline cancellation.
+	timerDone <-chan time.Time
+
+	// Tracks manual calls to the cancel function.
+	cancel       func() // Closes cancelCalled wrapped in a sync.Once.
+	cancelCalled chan struct{}
+
+	// The user-facing data from the context.Context interface.
+	ctxDone chan struct{} // Returned by Done().
+	err     error         // nil until ctxDone is ready to be closed.
+}
+
+func newFakeClockContext(parent context.Context, deadline time.Time, timer <-chan time.Time) (context.Context, context.CancelFunc) {
+	cancelCalled := make(chan struct{})
+	ctx := &fakeClockContext{
+		parent:       parent,
+		deadline:     deadline,
+		timerDone:    timer,
+		cancelCalled: cancelCalled,
+		ctxDone:      make(chan struct{}),
+		cancel: sync.OnceFunc(func() {
+			close(cancelCalled)
+		}),
+	}
+	ready := make(chan struct{}, 1)
+	go ctx.runCancel(ready)
+	<-ready // Wait until the cancellation goroutine is running.
+	return ctx, ctx.cancel
+}
+
+func (c *fakeClockContext) Deadline() (time.Time, bool) {
+	return c.deadline, true
+}
+
+func (c *fakeClockContext) Done() <-chan struct{} {
+	return c.ctxDone
+}
+
+func (c *fakeClockContext) Err() error {
+	<-c.Done() // Don't return the error before it is ready.
+	return c.err
+}
+
+func (c *fakeClockContext) Value(key any) any {
+	return c.parent.Value(key)
+}
+
+// runCancel runs the fakeClockContext's cancel goroutine and returns the
+// fakeClockContext's cancel function.
+//
+// fakeClockContext is then cancelled when any of the following occur:
+//
+//   - The fakeClockContext.done channel is closed by its timer.
+//   - The returned CancelFunc is executed.
+//   - The fakeClockContext's parent context is cancelled with an error other
+//     than context.DeadlineExceeded.
+func (c *fakeClockContext) runCancel(ready chan struct{}) {
+	parentDone := c.parent.Done()
+
+	// Close ready when done, just in case the ready signal races with other
+	// branches of our select statement below.
+	defer close(ready)
+
+	for c.err == nil {
+		select {
+		case <-c.timerDone:
+			c.err = ErrFakeClockDeadlineExceeded
+		case <-c.cancelCalled:
+			c.err = context.Canceled
+		case <-parentDone:
+			c.err = c.parent.Err()
+
+		case ready <- struct{}{}:
+			// Signals the cancellation goroutine has begun, in an attempt to minimize
+			// race conditions related to goroutine startup time.
+			ready = nil // This case statement can only fire once.
+		}
+	}
+	close(c.ctxDone)
+	return
+}
diff --git a/vendor/github.com/jonboulle/clockwork/ticker.go b/vendor/github.com/jonboulle/clockwork/ticker.go
new file mode 100644
index 0000000..aa56952
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/ticker.go
@@ -0,0 +1,71 @@
+package clockwork
+
+import "time"
+
+// Ticker provides an interface which can be used instead of directly using
+// [time.Ticker]. The real-time ticker t provides ticks through t.C which
+// becomes t.Chan() to make this channel requirement definable in this
+// interface.
+type Ticker interface {
+	Chan() <-chan time.Time
+	Reset(d time.Duration)
+	Stop()
+}
+
+type realTicker struct{ *time.Ticker }
+
+func (r realTicker) Chan() <-chan time.Time {
+	return r.C
+}
+
+type fakeTicker struct {
+	// The channel associated with the firer, used to send expiration times.
+	c chan time.Time
+
+	// The time when the ticker expires. Only meaningful if the ticker is currently
+	// one of a FakeClock's waiters.
+	exp time.Time
+
+	// reset and stop provide the implementation of the respective exported
+	// functions.
+	reset func(d time.Duration)
+	stop  func()
+
+	// The duration of the ticker.
+	d time.Duration
+}
+
+func newFakeTicker(fc *FakeClock, d time.Duration) *fakeTicker {
+	var ft *fakeTicker
+	ft = &fakeTicker{
+		c: make(chan time.Time, 1),
+		d: d,
+		reset: func(d time.Duration) {
+			fc.l.Lock()
+			defer fc.l.Unlock()
+			ft.d = d
+			fc.setExpirer(ft, d)
+		},
+		stop: func() { fc.stop(ft) },
+	}
+	return ft
+}
+
+func (f *fakeTicker) Chan() <-chan time.Time { return f.c }
+
+func (f *fakeTicker) Reset(d time.Duration) { f.reset(d) }
+
+func (f *fakeTicker) Stop() { f.stop() }
+
+func (f *fakeTicker) expire(now time.Time) *time.Duration {
+	// Never block on expiration.
+	select {
+	case f.c <- now:
+	default:
+	}
+	return &f.d
+}
+
+func (f *fakeTicker) expiration() time.Time { return f.exp }
+
+func (f *fakeTicker) setExpiration(t time.Time) { f.exp = t }
diff --git a/vendor/github.com/jonboulle/clockwork/timer.go b/vendor/github.com/jonboulle/clockwork/timer.go
new file mode 100644
index 0000000..e7e1d40
--- /dev/null
+++ b/vendor/github.com/jonboulle/clockwork/timer.go
@@ -0,0 +1,79 @@
+package clockwork
+
+import "time"
+
+// Timer provides an interface which can be used instead of directly using
+// [time.Timer]. The real-time timer t provides events through t.C which becomes
+// t.Chan() to make this channel requirement definable in this interface.
+type Timer interface {
+	Chan() <-chan time.Time
+	Reset(d time.Duration) bool
+	Stop() bool
+}
+
+type realTimer struct{ *time.Timer }
+
+func (r realTimer) Chan() <-chan time.Time {
+	return r.C
+}
+
+type fakeTimer struct {
+	// The channel associated with the firer, used to send expiration times.
+	c chan time.Time
+
+	// The time when the firer expires. Only meaningful if the firer is currently
+	// one of a FakeClock's waiters.
+	exp time.Time
+
+	// reset and stop provide the implementation of the respective exported
+	// functions.
+	reset func(d time.Duration) bool
+	stop  func() bool
+
+	// If present when the timer fires, the timer calls afterFunc in its own
+	// goroutine rather than sending the time on Chan().
+	afterFunc func()
+}
+
+func newFakeTimer(fc *FakeClock, afterfunc func()) *fakeTimer {
+	var ft *fakeTimer
+	ft = &fakeTimer{
+		c: make(chan time.Time, 1),
+		reset: func(d time.Duration) bool {
+			fc.l.Lock()
+			defer fc.l.Unlock()
+			// fc.l must be held across the calls to stopExpirer & setExpirer.
+			stopped := fc.stopExpirer(ft)
+			fc.setExpirer(ft, d)
+			return stopped
+		},
+		stop: func() bool { return fc.stop(ft) },
+
+		afterFunc: afterfunc,
+	}
+	return ft
+}
+
+func (f *fakeTimer) Chan() <-chan time.Time { return f.c }
+
+func (f *fakeTimer) Reset(d time.Duration) bool { return f.reset(d) }
+
+func (f *fakeTimer) Stop() bool { return f.stop() }
+
+func (f *fakeTimer) expire(now time.Time) *time.Duration {
+	if f.afterFunc != nil {
+		go f.afterFunc()
+		return nil
+	}
+
+	// Never block on expiration.
+	select {
+	case f.c <- now:
+	default:
+	}
+	return nil
+}
+
+func (f *fakeTimer) expiration() time.Time { return f.exp }
+
+func (f *fakeTimer) setExpiration(t time.Time) { f.exp = t }