-
Notifications
You must be signed in to change notification settings - Fork 2
/
watcher_linux.go
95 lines (79 loc) · 2.24 KB
/
watcher_linux.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
// MIT License
//
// Copyright (c) 2020 The vine Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//go:build linux
// +build linux
package file
import (
"os"
"github.com/fsnotify/fsnotify"
"github.com/vine-io/vine/lib/config/source"
)
type watcher struct {
f *file
fw *fsnotify.Watcher
exit chan bool
}
func newWatcher(f *file) (source.Watcher, error) {
fw, err := fsnotify.NewWatcher()
if err != nil {
return nil, err
}
fw.Add(f.path)
return &watcher{
f: f,
fw: fw,
exit: make(chan bool),
}, nil
}
func (w *watcher) Next() (*source.ChangeSet, error) {
// is it closed?
select {
case <-w.exit:
return nil, source.ErrWatcherStopped
default:
}
// try get the event
select {
case event, _ := <-w.fw.Events:
if event.Op == fsnotify.Rename {
// check existence of file, and add watch again
_, err := os.Stat(event.Name)
if err == nil || os.IsExist(err) {
w.fw.Add(event.Name)
}
}
c, err := w.f.Read()
if err != nil {
return nil, err
}
// add path again for the event bug of fsnotify
w.fw.Add(w.f.path)
return c, nil
case err := <-w.fw.Errors:
return nil, err
case <-w.exit:
return nil, source.ErrWatcherStopped
}
}
func (w *watcher) Stop() error {
return w.fw.Close()
}