logger

Efficient and simple logger for golang with more features supported.

• custom log levels
• custom log tags
• custom log colors (only worked for *NIX)
• custom log output and output format
• structured log

Install

go get -u github.com/dolab/logger

Usage

package main

import "github.com/dolab/logger"

func main() {
    log, _ := logger.New("stdout")
    log.SetLevel(logger.Ldebug)

    // normal
    log.Debug("Hello, logger!")
    log.Infof("Hello, %s!", "logger")

    // create new logger with tags based on log
    taggedLog := log.New("X-REQUEST-ID")
    taggedLog.Debug("Receive HTTP request")
    taggedLog.Warnf("Send response with %d.", 200)
    
    // or use struct log
    textLog := log.NewTextLogger()
    textLog.Str("key", "value").Err(err, true).Error("it's for demo")
}

Output

• stdout = os.Stdout
• stderr = os.Stderr
• null | nil = os.DevNull
• path/to/file = os.OpenFile("path/to/file", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)

Level

• Ldebug = DEBUG
• Linfo = INFO
• Lwarn = WARN
• Lerror = ERROR
• Lfatal = FATAL
• Lpanic = PANIC
• Ltrace = Stack

License

MIT

Author

Spring MC