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 log
/*
var argv struct {
Foo string
Bar bool
User string `arg:"env:USER"`
Demo bool `help:"run a demo"`
}
*/
/*
var f1 *os.File
var f2 *os.File
var err error
*/
/* from gocron:
// DefaultLogger is used by Cron if none is specified.
var DefaultLogger Logger = PrintfLogger(log.New(os.Stdout, "cron: ", log.LstdFlags))
// DiscardLogger can be used by callers to discard all log messages.
var DiscardLogger Logger = PrintfLogger(log.New(ioutil.Discard, "", 0))
// Logger is the interface used in this package for logging, so that any backend
// can be plugged in. It is a subset of the github.com/go-logr/logr interface.
type Logger interface {
// Info logs routine messages about cron's operation.
Info(msg string, keysAndValues ...interface{})
// Error logs an error condition.
Error(err error, msg string, keysAndValues ...interface{})
}
*/
// fmt.Println(argv.Foo, args.Bar, args.User)
/*
// from: https://github.com/robfig/cron/blob/master/logger.go
log.Println()
log.Println("STDOUT is now at /tmp/guilogfile")
log.Println("STDOUT is now at /tmp/guilogfile")
log.Println()
f1, err = os.OpenFile(outfile, os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
// hmm. is there a trick here or must this be in main()
// defer f.Close()
log.SetOutput(f1)
log.Println("This is a test log entry")
*/
/*
func captureSTDOUT() {
f2, _ = os.OpenFile("/tmp/my.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0664)
multiWriter := io.MultiWriter(os.Stderr, f2)
rd, wr, err := os.Pipe()
if err != nil {
os.Exit(1)
}
// overwrite os.Stdout
os.Stderr = wr
go func() {
scanner := bufio.NewScanner(rd)
for scanner.Scan() {
stdoutLine := scanner.Text()
multiWriter.Write([]byte(stdoutLine + "\n"))
}
}()
fmt.Println("foobar")
// hacky sleep to ensure the go routine can write before program exits
time.Sleep(time.Second)
}
*/
|
