{ Josh Rendek }

<3 Ruby & Go

A useful logger in Go

Jun 9, 2014 - 1 minutes

Small function that will print out useful information when invoked:

 1func logMsg(msg string) {
 2	pc, _, _, _ := runtime.Caller(1)
 3	caller := runtime.FuncForPC(pc).Name()
 4	_, file, line, _ := runtime.Caller(0)
 5	sp := strings.Split(file, "/")
 6	short_path := sp[len(sp)-2 : len(sp)]
 7	path_line := fmt.Sprintf("[%s/%s:%d]", short_path[0], short_path[1], line)
 8	log_string := fmt.Sprintf("[%s]%s %s:: %s", time.Now(), path_line, caller, msg)
 9	fmt.Println(log_string)
10}

Sample output:

1[2014-06-10 01:38:45.812215998 +0000 UTC][src/trex-client.go:15]{main.main}:: checking jobs - finish
2[2014-06-10 01:38:47.329650331 +0000 UTC][src/trex-client.go:15]{main.main}:: building package list - start
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