How to use golang's zap

#zap is a high-performance log library. Here is a brief introduction to the use of zap.

1. Download zap bag (Recommended Learning: Go )

## Because ZAP is open source of Uber, ZAP The package used is at go.uber.org/zap. If you directly go to get this package, you may be prompted that it cannot be obtained.

You can go get github.com/uber-go/zap, and then copy the zap directory to src/go.uber.org (you may also need go.uber.org/atomic and go.uber.org/multierr, you can refer to this method to get it)

2.zap simple encapsulation example.

package logger
 
import (
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
	"gopkg.in/natefinch/lumberjack.v2"
)
 
// error logger
var errorLogger *zap.SugaredLogger
 
var levelMap = map[string]zapcore.Level{
	"debug":  zapcore.DebugLevel,
	"info":   zapcore.InfoLevel,
	"warn":   zapcore.WarnLevel,
	"error":  zapcore.ErrorLevel,
	"dpanic": zapcore.DPanicLevel,
	"panic":  zapcore.PanicLevel,
	"fatal":  zapcore.FatalLevel,
}
 
func getLoggerLevel(lvl string) zapcore.Level {
	if level, ok := levelMap[lvl]; ok {
		return level
	}
	return zapcore.InfoLevel
}
 
func init() {
	fileName := "zap.log"
	level := getLoggerLevel("debug")
	syncWriter := zapcore.AddSync(&lumberjack.Logger{
		Filename:  fileName,
		MaxSize:   1 << 30, //1G
		LocalTime: true,
		Compress:  true,
	})
	encoder := zap.NewProductionEncoderConfig()
	encoder.EncodeTime = zapcore.ISO8601TimeEncoder
	core := zapcore.NewCore(zapcore.NewJSONEncoder(encoder), syncWriter, zap.NewAtomicLevelAt(level))
	logger := zap.New(core, zap.AddCaller(), zap.AddCallerSkip(1))
	errorLogger = logger.Sugar()
}
 
func Debug(args ...interface{}) {
	errorLogger.Debug(args...)
}
 
func Debugf(template string, args ...interface{}) {
	errorLogger.Debugf(template, args...)
}
 
func Info(args ...interface{}) {
	errorLogger.Info(args...)
}
 
func Infof(template string, args ...interface{}) {
	errorLogger.Infof(template, args...)
}
 
func Warn(args ...interface{}) {
	errorLogger.Warn(args...)
}
 
func Warnf(template string, args ...interface{}) {
	errorLogger.Warnf(template, args...)
}
 
func Error(args ...interface{}) {
	errorLogger.Error(args...)
}
 
func Errorf(template string, args ...interface{}) {
	errorLogger.Errorf(template, args...)
}
 
func DPanic(args ...interface{}) {
	errorLogger.DPanic(args...)
}
 
func DPanicf(template string, args ...interface{}) {
	errorLogger.DPanicf(template, args...)
}
 
func Panic(args ...interface{}) {
	errorLogger.Panic(args...)
}
 
func Panicf(template string, args ...interface{}) {
	errorLogger.Panicf(template, args...)
}
 
func Fatal(args ...interface{}) {
	errorLogger.Fatal(args...)
}
 
func Fatalf(template string, args ...interface{}) {
	errorLogger.Fatalf(template, args...)
}

Usage example after simple encapsulation:

package main
 
import (
    "logger"
)
 
func main() {
    logger.Infof("simple zap logger example")    
}

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