Export ErrWatchClosed from watch.Until

This is needed so that users of watch.Until may check for this
particular error instead of attempting to match the error string.

```release-note
NONE
```
This commit is contained in:
Alex Crawford 2017-05-25 10:19:59 -07:00
parent 079020f559
commit 505a7e935d

View File

@ -29,8 +29,8 @@ import (
// from false to true).
type ConditionFunc func(event Event) (bool, error)
// errWatchClosed is returned when the watch channel is closed before timeout in Until.
var errWatchClosed = errors.New("watch closed before Until timeout")
// ErrWatchClosed is returned when the watch channel is closed before timeout in Until.
var ErrWatchClosed = errors.New("watch closed before Until timeout")
// Until reads items from the watch until each provided condition succeeds, and then returns the last watch
// encountered. The first condition that returns an error terminates the watch (and the event is also returned).
@ -65,7 +65,7 @@ func Until(timeout time.Duration, watcher Interface, conditions ...ConditionFunc
select {
case event, ok := <-ch:
if !ok {
return lastEvent, errWatchClosed
return lastEvent, ErrWatchClosed
}
lastEvent = &event