put logs in log file

api/logger/logger.go

@@ -2,25 +2,59 @@ package logger
 
 import (
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"gopkg.in/natefinch/lumberjack.v2"
+	"os"
 )
 
-var logger *zap.SugaredLogger
+var logger *zap.Logger
+var sugarLogger *zap.SugaredLogger
 
 func GetLogger() *zap.SugaredLogger {
-	if logger != nil {
-		return logger
+	if sugarLogger != nil {
+		return sugarLogger
 	}
 
-	logLevel := zap.NewAtomicLevel()
-	logLevel.SetLevel(zap.InfoLevel)
-	log, _ := zap.Config{
-		Level:            logLevel,
-		Development:      false,
-		Encoding:         "console",
-		EncoderConfig:    zap.NewDevelopmentEncoderConfig(),
-		OutputPaths:      []string{"stderr"},
-		ErrorOutputPaths: []string{"stderr"},
-	}.Build()
-	logger = log.Sugar()
-	return logger
+	logLevel := zap.NewAtomicLevelAt(zapcore.InfoLevel)
+	encoder := getEncoder()
+	writerSyncer := getLogWriter()
+	fileCore := zapcore.NewCore(encoder, writerSyncer, logLevel)
+	consoleOutput := zapcore.Lock(os.Stdout)
+	consoleCore := zapcore.NewCore(
+		encoder,
+		consoleOutput,
+		logLevel,
+	)
+	core := zapcore.NewTee(fileCore, consoleCore)
+	logger = zap.New(core, zap.AddCaller())
+	sugarLogger = logger.Sugar()
+	return sugarLogger
+}
+
+// core 三个参数之  编码
+func getEncoder() zapcore.Encoder {
+	encoderConfig := zapcore.EncoderConfig{
+		TimeKey:        "time",
+		LevelKey:       "level",
+		NameKey:        "logger",
+		CallerKey:      "caller",
+		MessageKey:     "msg",
+		StacktraceKey:  "stacktrace",
+		EncodeTime:     zapcore.ISO8601TimeEncoder,
+		EncodeDuration: zapcore.SecondsDurationEncoder,
+		EncodeCaller:   zapcore.ShortCallerEncoder,
+		EncodeLevel:    zapcore.CapitalLevelEncoder,
+	}
+	return zapcore.NewConsoleEncoder(encoderConfig)
+}
+
+func getLogWriter() zapcore.WriteSyncer {
+	lumberJackLogger := &lumberjack.Logger{
+		Filename:   "logs/app.log",
+		MaxSize:    10,
+		MaxBackups: 5,
+		MaxAge:     30,
+		Compress:   false,
+	}
+	return zapcore.AddSync(lumberJackLogger)
 }