log

README

log

log is a simple and useful logging tool of Go. see API.

Features

• light weight
• easy to use

Note

there is only 2 log level(Debug,Info) the philosophy of this can be found in here

Quick Start

Installation

go get github.com/imroc/log

Simple Usage

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

func main() {
	log.Debug("debug ", "message")
	log.Infof("%s message", "info")
}

output:

2016/10/04 14:38:38 [DEBG] main.go:7 debug message
2016/10/04 14:38:38 [INFO] main.go:8 info message

More Control

log.SetFilename("test.log")
log.SetFlag(log.Ldate | log.Ltime | log.Llongfile)
log.SetDebug(false)

LICENSE

log is is distributed under the terms of the MIT License.

Documentation

Index

• Constants
• func Debug(a ...interface{})
• func Debugf(format string, a ...interface{})
• func Info(a ...interface{})
• func Infof(format string, a ...interface{})
• func SetDebug(d bool)
• func SetFilename(name string) (err error)
• func SetFlag(f int)
• func SetOutput(o io.Writer)

Constants

const (
	// Bits or'ed together to control what's printed.
	// There is no control over the order they appear (the order listed
	// here) or the format they present (as described in the comments).
	// The prefix is followed by a colon only when Llongfile or Lshortfile
	// is specified.
	// For example, flags Ldate | Ltime (or LstdFlags) produce,
	//	2009/01/23 01:23:23 message
	// while flags Ldate | Ltime | Lmicroseconds | Llongfile produce,
	//	2009/01/23 01:23:23.123123 /a/b/c/d.go:23: message
	Ldate         = 1 << iota                  // the date in the local time zone: 2009/01/23
	Ltime                                      // the time in the local time zone: 01:23:23
	Lmicroseconds                              // microsecond resolution: 01:23:23.123123.  assumes Ltime.
	Llongfile                                  // full file name and line number: /a/b/c/d.go:23
	Lshortfile                                 // final file name element and line number: d.go:23. overrides Llongfile
	LUTC                                       // if Ldate or Ltime is set, use UTC rather than the local time zone
	LstdFlags     = Ldate | Ltime | Lshortfile // initial values for the standard logger
)

These flags define which text to prefix to each log entry generated by the Logger.

Functions

func Debug

func Debug(a ...interface{})

Debug output the debug info if DEBUG is set to true.

func Debugf

func Debugf(format string, a ...interface{})

Debugf output the formated debug info if DEBUG is set to true.

func Info

func Info(a ...interface{})

Info output the info.

func Infof

func Infof(format string, a ...interface{})

Infof output the formated info.

func SetDebug

func SetDebug(d bool)

SetDebug enable or disable debug.

func SetFilename

func SetFilename(name string) (err error)

SetFilename set the ouput filename.

func SetFlag

func SetFlag(f int)

SetFlag set the output flag.

func SetOutput

func SetOutput(o io.Writer)

SetOutput set the output.