mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-22 13:00:19 +00:00
21 lines
756 B
Go
21 lines
756 B
Go
|
// Copyright (c) 2015 HPE Software Inc. All rights reserved.
|
||
|
|
// Copyright (c) 2013 ActiveState Software Inc. All rights reserved.
|
||
|
|
|
||
|
|
package watch
|
||
|
|
|
||
|
|
import "gopkg.in/tomb.v1"
|
||
|
|
|
||
|
|
// FileWatcher monitors file-level events.
|
||
|
|
type FileWatcher interface {
|
||
|
|
// BlockUntilExists blocks until the file comes into existence.
|
||
|
|
BlockUntilExists(*tomb.Tomb) error
|
||
|
|
|
||
|
|
// ChangeEvents reports on changes to a file, be it modification,
|
||
|
|
// deletion, renames or truncations. Returned FileChanges group of
|
||
|
|
// channels will be closed, thus become unusable, after a deletion
|
||
|
|
// or truncation event.
|
||
|
|
// In order to properly report truncations, ChangeEvents requires
|
||
|
|
// the caller to pass their current offset in the file.
|
||
|
|
ChangeEvents(*tomb.Tomb, int64) (*FileChanges, error)
|
||
|
|
}
|