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// Copyright 2015 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
package clock
import (
"time"
)
// WallClock exposes wall-clock time via the Clock interface.
var WallClock wallClock
// ensure that WallClock does actually implement the Clock interface.
var _ Clock = WallClock
// WallClock exposes wall-clock time as returned by time.Now.
type wallClock struct{}
// Now is part of the Clock interface.
func (wallClock) Now() time.Time {
return time.Now()
}
// After implements Clock.After.
func (wallClock) After(d time.Duration) <-chan time.Time {
return time.After(d)
}
// AfterFunc implements Clock.AfterFunc.
func (wallClock) AfterFunc(d time.Duration, f func()) Timer {
return wallTimer{time.AfterFunc(d, f)}
}
// NewTimer implements Clock.NewTimer.
func (wallClock) NewTimer(d time.Duration) Timer {
return wallTimer{time.NewTimer(d)}
}
// wallTimer implements the Timer interface.
type wallTimer struct {
*time.Timer
}
// Chan implements Timer.Chan.
func (t wallTimer) Chan() <-chan time.Time {
return t.C
}
// At implements Clock.At.
func (wallClock) At(t time.Time) <-chan time.Time {
return time.After(time.Until(t))
}
// AtFunc implements Clock.AtFunc.
func (wallClock) AtFunc(t time.Time, f func()) Alarm {
return wallAlarm{time.AfterFunc(time.Until(t), f)}
}
// NewAlarm implements Clock.NewAlarm.
func (wallClock) NewAlarm(t time.Time) Alarm {
return wallAlarm{time.NewTimer(time.Until(t))}
}
// wallAlarm implements the Alarm interface.
type wallAlarm struct {
*time.Timer
}
// Chan implements Alarm.Chan.
func (a wallAlarm) Chan() <-chan time.Time {
return a.C
}
// Reset implements Alarm.Reset
func (a wallAlarm) Reset(t time.Time) bool {
return a.Timer.Reset(time.Until(t))
}
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