Example:
import "github.com/bluec0re/go-helperlib/log"
func foo() {
l := log.NewContextLogger()
l.Infof("Log message in foo")
l.Errorf("error message in foo")
}
func main() {
_, err := log.AddFileHandler("test.log")
if err != nil {
log.Fatalf("Error: %s", err)
}
log.Debugf("This is a %s msg", log.LevelDebug)
log.Infof("This is a %s msg", log.LevelInfo)
log.Warnf("This is a %s msg", log.LevelWarn)
log.Errorf("This is a %s msg", log.LevelError)
log.Fatalf("This is a %s msg", log.LevelFatal)
foo()
}Cli output:
[DEBUG] This is a DEBUG msg [ INFO] This is a INFO msg [ WARN] This is a WARN msg [ERROR] This is a ERROR msg [FATAL] This is a FATAL msg [ INFO] Log message in foo [ERROR] error message in foo
Logfile output:
[2018-03-12T13:07:33+01:00] DEBUG: <main (example.go:16)>: This is a DEBUG msg
[2018-03-12T13:07:33+01:00] INFO: <main (example.go:17)>: This is a INFO msg
[2018-03-12T13:07:33+01:00] WARN: <main (example.go:18)>: This is a WARN msg
[2018-03-12T13:07:33+01:00] ERROR: <main (example.go:19)>: This is a ERROR msg
[2018-03-12T13:07:33+01:00] FATAL: <main (example.go:20)>: This is a FATAL msg
[2018-03-12T13:07:33+01:00] f1ececd4-25ed-11e8-8411-a08cfde31c8b INFO: <foo (example.go:7)>: Log message in foo
[2018-03-12T13:07:33+01:00] f1ececd4-25ed-11e8-8411-a08cfde31c8b ERROR: <foo (example.go:8)>: error message in foo