-
Notifications
You must be signed in to change notification settings - Fork 1
/
termlog.go
59 lines (48 loc) · 1.45 KB
/
termlog.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
// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>. All rights reserved.
package log4go
import (
"fmt"
"io"
"os"
)
var stdout io.Writer = os.Stdout
// This is the standard writer that prints to standard output.
type ConsoleLogWriter struct {
records chan *LogRecord
flushed chan struct{}
}
// This creates a new ConsoleLogWriter
func NewConsoleLogWriter() *ConsoleLogWriter {
writer := &ConsoleLogWriter{
records: make(chan *LogRecord, LogBufferLength),
flushed: make(chan struct{}),
}
go writer.run(stdout)
return writer
}
func (w *ConsoleLogWriter) run(out io.Writer) {
var timestr string
var timestrAt int64
for rec := range w.records {
if at := rec.Created.UnixNano() / 1e9; at != timestrAt {
timestr, timestrAt = rec.Created.Format("01/02/06 15:04:05"), at
}
fmt.Fprint(out, "[", timestr, "] [", levelStrings[rec.Level], "] (", rec.Source, ") ", rec.Message, "\n")
}
// inflight logs flushed, safe to quit
close(w.flushed)
}
// This is the ConsoleLogWriter's output method. This will block if the output
// buffer is full.
func (w *ConsoleLogWriter) LogWrite(rec *LogRecord) {
w.records <- rec
}
// Close stops the logger from sending messages to standard output. Attempts to
// send log messages to this logger after a Close have undefined behavior.
//
// Caution: call LogWrite after Close will panic: send on closed channel
func (w *ConsoleLogWriter) Close() {
close(w.records)
// wait for inflight logs flush
<-w.flushed
}