log

log

a lite golang log library, easy to get start and no dependency.

Features

[x] consolt and filelog support

[x] WithFields support

[x] lite and easy to use

Install

go get -u github.com/yeqown/log 

Quick Start

There is sample code of using log.

package main

type embed struct {
	FieldA string
	FieldB int
}

func main() {
	// using builtin logger
	log.Info(1, 2, 3, 4, 5)
	log.Infof("this is format: %d", 2)

	log.
		WithField("key1", "value1").
		WithFields(log.Fields{
			"key2": "value2",
			"key3": "value3",
			"key4": "value4",
			"key5": "value5",
			"key6": "value6",
			"key7": "value7",
			"key8": "value8",
		}).Error("test error")

	// using new logger
	logger, _ := log.NewLogger(
		log.WithLevel(log.LevelError),
		log.WithGlobalFields(log.Fields{"global_key": "global_value"}),
	)
	logger.Info(1, 2, 3, 4, 5)
	logger.Infof("this is format: %d", 2)
	logger.WithField("logger", "it's me").
		WithFields(log.Fields{
			"key2": "value2",
			"key3": "value3",
			"key4": "value4",
			"key5": "value5",
			"key6": "value6",
			"key7": "value7",
			"embed": embed{
				FieldA: "aaa",
				FieldB: 112091,
			},
			"embed_ptr": &embed{
				FieldA: "aaa",
				FieldB: 112091,
			},
		}).Error("test error")
    // [Error] file="/Users/yeqown/projects/opensource/log/logger_entry.go" fn="github.com/yeqown/log.(*entry).output" 
    // line="109" timestamp="1596090798" formatted_time="2020-07-30T14:33:18+08:00" embed="{aaa 112091}" 
    // embed_ptr="&{aaa 112091}" global_key="global_value" key2="value2" logger="it's me" msg="test error"
}

Migrate

Here is a broken change from d68941c to v1.x. v1.x is advised to use.

shots

Here are some shots of using example.

1. stdout shots

2. file shots

output to stdout and file both.