davewhit3 / log

Golang logger

logger

Logger is a simple cross platform Go logging library for Windows, Linux, FreeBSD, and macOS, it can log to the Windows event log, Linux/macOS syslog, and an io.Writer.

Usage

Set up the default logger to log the system log (event log or syslog):

package main

import (
  "github.com/bialas1993/log"
)

func main() {
	log.Debug("debug")
	log.With(log.LogFields{
		"asd":   "bsd",
		"lorem": "ipsum",
		"bang":  10,
		"struct": struct {
			A string
		}{"aaaaaa"},
	}).Info("info")
}

Custom Format

Code	Example
log.SetFlags(log.Ldate)	ERROR: 2018/11/11 Error running Foobar: message
log.SetFlags(log.Ltime)	ERROR: 09:42:45 Error running Foobar: message
log.SetFlags(log.Lmicroseconds)	ERROR: 09:42:50.776015 Error running Foobar: message
log.SetFlags(log.Llongfile)	ERROR: /src/main.go:31: Error running Foobar: message
log.SetFlags(log.Lshortfile)	ERROR: main.go:31: Error running Foobar: message
log.SetFlags(log.LUTC)	ERROR: Error running Foobar: message
log.SetFlags(log.LstdFlags)	ERROR: 2018/11/11 09:43:12 Error running Foobar: message

More info: https://golang.org/pkg/log/#pkg-constants