aboutsummaryrefslogtreecommitdiff
path: root/vendor/github.com/hpcloud/tail/watch/inotify.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/hpcloud/tail/watch/inotify.go')
-rw-r--r--vendor/github.com/hpcloud/tail/watch/inotify.go128
1 files changed, 0 insertions, 128 deletions
diff --git a/vendor/github.com/hpcloud/tail/watch/inotify.go b/vendor/github.com/hpcloud/tail/watch/inotify.go
deleted file mode 100644
index 4478f1e1a..000000000
--- a/vendor/github.com/hpcloud/tail/watch/inotify.go
+++ /dev/null
@@ -1,128 +0,0 @@
-// Copyright (c) 2015 HPE Software Inc. All rights reserved.
-// Copyright (c) 2013 ActiveState Software Inc. All rights reserved.
-
-package watch
-
-import (
- "fmt"
- "os"
- "path/filepath"
-
- "github.com/hpcloud/tail/util"
-
- "gopkg.in/fsnotify.v1"
- "gopkg.in/tomb.v1"
-)
-
-// InotifyFileWatcher uses inotify to monitor file changes.
-type InotifyFileWatcher struct {
- Filename string
- Size int64
-}
-
-func NewInotifyFileWatcher(filename string) *InotifyFileWatcher {
- fw := &InotifyFileWatcher{filepath.Clean(filename), 0}
- return fw
-}
-
-func (fw *InotifyFileWatcher) BlockUntilExists(t *tomb.Tomb) error {
- err := WatchCreate(fw.Filename)
- if err != nil {
- return err
- }
- defer RemoveWatchCreate(fw.Filename)
-
- // Do a real check now as the file might have been created before
- // calling `WatchFlags` above.
- if _, err = os.Stat(fw.Filename); !os.IsNotExist(err) {
- // file exists, or stat returned an error.
- return err
- }
-
- events := Events(fw.Filename)
-
- for {
- select {
- case evt, ok := <-events:
- if !ok {
- return fmt.Errorf("inotify watcher has been closed")
- }
- evtName, err := filepath.Abs(evt.Name)
- if err != nil {
- return err
- }
- fwFilename, err := filepath.Abs(fw.Filename)
- if err != nil {
- return err
- }
- if evtName == fwFilename {
- return nil
- }
- case <-t.Dying():
- return tomb.ErrDying
- }
- }
- panic("unreachable")
-}
-
-func (fw *InotifyFileWatcher) ChangeEvents(t *tomb.Tomb, pos int64) (*FileChanges, error) {
- err := Watch(fw.Filename)
- if err != nil {
- return nil, err
- }
-
- changes := NewFileChanges()
- fw.Size = pos
-
- go func() {
- defer RemoveWatch(fw.Filename)
-
- events := Events(fw.Filename)
-
- for {
- prevSize := fw.Size
-
- var evt fsnotify.Event
- var ok bool
-
- select {
- case evt, ok = <-events:
- if !ok {
- return
- }
- case <-t.Dying():
- return
- }
-
- switch {
- case evt.Op&fsnotify.Remove == fsnotify.Remove:
- fallthrough
-
- case evt.Op&fsnotify.Rename == fsnotify.Rename:
- changes.NotifyDeleted()
- return
-
- case evt.Op&fsnotify.Write == fsnotify.Write:
- fi, err := os.Stat(fw.Filename)
- if err != nil {
- if os.IsNotExist(err) {
- changes.NotifyDeleted()
- return
- }
- // XXX: report this error back to the user
- util.Fatal("Failed to stat file %v: %v", fw.Filename, err)
- }
- fw.Size = fi.Size()
-
- if prevSize > 0 && prevSize > fw.Size {
- changes.NotifyTruncated()
- } else {
- changes.NotifyModified()
- }
- prevSize = fw.Size
- }
- }
- }()
-
- return changes, nil
-}