-
Notifications
You must be signed in to change notification settings - Fork 0
/
loop.go
80 lines (71 loc) · 1.37 KB
/
loop.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
package collector
import (
"os"
)
func (c *Collector) loop() {
// 收集已经存在的数据
if !c.collect() {
c.exitActively() // 主动退出
return
}
for {
select {
case <-c.writeEvent:
if !c.collect() {
c.exitActively() // 主动退出
return
}
case <-c.closeEvent:
c.collect()
// watch通知退出
c.logger.Infof("collector closed.")
c.close()
return
}
}
}
func (c *Collector) collect() bool {
for {
rows, drain := c.reader.Read()
if len(rows) > 0 {
if c.output.Write(rows) {
c.logger.Infof("%d, %s\n", len(rows), c.reader.SaveOffset())
} else {
return false
}
}
if drain {
break
}
}
return true
}
// 主动退出,watch不知道collector已经退出,仍然会发送通知。
func (c *Collector) exitActively() {
c.logger.Errorf("%s: collector exited.", c.id)
c.close()
}
func (c *Collector) close() {
c.reader.Close()
if err := c.logFile.Close(); err != nil {
c.logger.Errorf("%s: close logger error: %v.", c.id, err)
}
}
func (c *Collector) NotifyWrite() {
select {
case c.writeEvent <- struct{}{}:
default:
}
}
func (c *Collector) NotifyClose() {
select {
case c.closeEvent <- struct{}{}:
default:
}
}
func (c *Collector) OpenedSameFile(fi os.FileInfo) bool {
return c.reader.SameFile(fi)
}
func (c *Collector) Printf(format string, v ...interface{}) {
c.logger.Infof(format, v...)
}