soman-maharjan/go-logger

Clolorful and levelwise logger implementation in go

go-logger

The go-logger package aims to build informative logs for your go project. Some of the features are

• Customizable colorful/non colored logs on the basis of different levels.
• Set formats to include the following:
  • Module
  • Time
  • FileName
  • File
  • Line
  • Level
  • Message
• 6 level of logs

Installation

go get github.com/abhiyankhanal/go-logger

Requirement

go1.18+

Formatting

By default, the format of all log messages is as seen above (on pic). But, you can change the default format to one of your choosing.

After generating a logger, you can do it for the instance of the logger.

log, _ := logger.New("name_here", 1)
log.SetFormat(format)

or for package

logger.SetDefaultFormat(format)

Set your custom colors

Available colors: Red, Yellow, Blue, Magenta, Green, White, Black

var (
	myColors = map[logger.LogLevel]string{
		logger.CriticalLevel: logger.ColorString(logger.Red),
		logger.ErrorLevel:    logger.ColorString(logger.Red),
		logger.WarningLevel:  logger.ColorString(logger.Yellow),
		logger.NoticeLevel:   logger.ColorString(logger.Blue),
		logger.DebugLevel:    logger.ColorString(logger.Magenta),
		logger.InfoLevel:     logger.ColorString(logger.Green),
	}
)
//first_option:package_name
//second_option: 0 for no color, 1 for colorful logs
//third_option: Writer type(io.Writer)
//fourth_option: Custom Colors
log, err := logger.New("test", 1, os.Stderr, myColors)

Set Format

/*
Available Formats:
	"%{id}"
	"%{time}"
	"%{module}"
	"%{filename}"
	"%{file}"
	"%{line}"
	"%{level}"
	"%{lvl}"
	"%{message}"
*/
log.SetFormat("[%{level}-%{id}] %{module} %{filename} %{file}:%{line} %{message}")

Example program

link here

Screenshot

Contributor

• Abhiyan Khanal