log

log-go

Log-go is a logging library developed with simplicity and thread-safety in mind. It doesn't support any extra-fancy features. Just like Go itself.

If you wish to improve upon this, you are welcome to send me a Pull Request.

Example with Colors

Features

• Different log levels like Fatal, Error, Info, etc.
• Configurable buffered writer (os.Stdout, *File, etc.)
• Thread safety
• Prefixes to separate logs from everything else
• Extremely simple setup
• Optionally coloured terminal output
• Well-tested

Log Levels

This library comes with the following log levels:

1. Panic
2. Fatal
3. Error
4. Warn
5. Info
6. Debug

These are enumerated as LevelDebug, LevelInfo, etc., so that you won't have to memorise them by numbers.

Each Log instance has five methods that are named precisely after the levels. As well as their formatted counterparts Debugf, Infof, Errorf, etc. Use them like so:

logger := log.Default()
logger.Warn("this is a warning")
logger.Infof("this is an information message #%d", 42)

Basic Setup

package main

import (
	"os"
	"github.com/sharpvik/log-go"
)

func init() {
	// Change log level.
	log.SetLevel(log.LevelInfo) // default: LevelError

	// Change log writer.
	file, _ := os.Create("server.log")
	log.SetWriter(file) // default: os.Stdout
}

func main() {
	// Computations ...
	x := 40 + 2

	// Print log with priority level Info.
	log.Infof("x = %d", x)
	// * 11/01/2021 23:07:08 INFO  x = 42
}

Examples

You are welcome to look at some examples too!