5566cde77f
* CLI properly formats the IP addresses in runner show * LXD provider now waits for an IP address before returning on Create * Added a few mocks for testing Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
53 lines
1.8 KiB
Go
53 lines
1.8 KiB
Go
// Copyright 2015 Canonical Ltd.
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// Licensed under the LGPLv3, see LICENCE file for details.
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package clock
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import "time"
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// Clock provides an interface for dealing with clocks.
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type Clock interface {
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// Now returns the current clock time.
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Now() time.Time
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// After waits for the duration to elapse and then sends the
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// current time on the returned channel.
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After(time.Duration) <-chan time.Time
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// AfterFunc waits for the duration to elapse and then calls f in its own goroutine.
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// It returns a Timer that can be used to cancel the call using its Stop method.
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AfterFunc(d time.Duration, f func()) Timer
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// NewTimer creates a new Timer that will send the current time
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// on its channel after at least duration d.
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NewTimer(d time.Duration) Timer
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}
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// Alarm returns a channel that will have the time sent on it at some point
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// after the supplied time occurs.
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//
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// This is short for c.After(t.Sub(c.Now())).
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func Alarm(c Clock, t time.Time) <-chan time.Time {
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return c.After(t.Sub(c.Now()))
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}
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// The Timer type represents a single event.
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// A Timer must be created with AfterFunc.
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// This interface follows time.Timer's methods but provides easier mocking.
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type Timer interface {
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// When the Timer expires, the current time will be sent on the
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// channel returned from Chan, unless the Timer was created by
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// AfterFunc.
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Chan() <-chan time.Time
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// Reset changes the timer to expire after duration d.
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// It returns true if the timer had been active, false if
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// the timer had expired or been stopped.
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Reset(time.Duration) bool
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// Stop prevents the Timer from firing. It returns true if
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// the call stops the timer, false if the timer has already expired or been stopped.
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// Stop does not close the channel, to prevent a read
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// from the channel succeeding incorrectly.
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Stop() bool
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}
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