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clock.go
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clock.go
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// Copyright 2023 Buf Technologies, Inc.
//
// 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 internal
import "time"
// Clock is an interface that is compatible with the jonboulle/clockwork package.
// The intent is that clockwork package only be a dependency for tests, not for
// non-test code.
type Clock interface {
After(d time.Duration) <-chan time.Time
Sleep(d time.Duration)
Now() time.Time
Since(t time.Time) time.Duration
NewTicker(d time.Duration) Ticker
NewTimer(d time.Duration) Timer
AfterFunc(d time.Duration, f func()) Timer
}
// Ticker is an interface covering the behavior of a [time.Ticker].
type Ticker interface {
Chan() <-chan time.Time
Reset(d time.Duration)
Stop()
}
// Timer is an interface covering the behavior of a [time.Timer].
type Timer interface {
Chan() <-chan time.Time
Reset(d time.Duration) bool
Stop() bool
}
// NewRealClock returns a Clock implementation where all methods
// delegate to the corresponding function in the [time] package.
func NewRealClock() Clock {
return realClock{}
}
type realClock struct{}
func (realClock) After(d time.Duration) <-chan time.Time {
return time.After(d)
}
func (realClock) Sleep(d time.Duration) {
time.Sleep(d)
}
func (realClock) Now() time.Time {
return time.Now()
}
func (realClock) Since(t time.Time) time.Duration {
return time.Since(t)
}
func (realClock) NewTicker(d time.Duration) Ticker {
return realTicker{time.NewTicker(d)}
}
func (realClock) NewTimer(d time.Duration) Timer {
return realTimer{time.NewTimer(d)}
}
func (realClock) AfterFunc(d time.Duration, f func()) Timer {
return realTimer{time.AfterFunc(d, f)}
}
type realTicker struct{ *time.Ticker }
func (r realTicker) Chan() <-chan time.Time {
return r.C
}
type realTimer struct{ *time.Timer }
func (r realTimer) Chan() <-chan time.Time {
return r.C
}