/
init.go
48 lines (40 loc) · 985 Bytes
/
init.go
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package logger
import (
"os"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
)
var logger *zap.Logger
func Init() *zap.Logger {
loggerFileName := os.Getenv("LOG_FILE")
logLevel := zap.InfoLevel
switch os.Getenv("LOG_LEVEL") {
case "info":
logLevel = zap.InfoLevel
case "debug":
logLevel = zap.DebugLevel
case "warn":
logLevel = zap.WarnLevel
case "error":
logLevel = zap.ErrorLevel
}
encoderCfg := zap.NewProductionEncoderConfig()
encoderCfg.EncodeTime = zapcore.ISO8601TimeEncoder
// lumberjack.Logger is already safe for concurrent use, so we don't need to
// lock it.
w := zapcore.AddSync(&lumberjack.Logger{
Filename: loggerFileName,
MaxSize: 5, // megabytes
MaxBackups: 3,
MaxAge: 15, // days
})
swSugar := zapcore.NewMultiWriteSyncer(zapcore.AddSync(os.Stdout), w)
core := zapcore.NewCore(
zapcore.NewJSONEncoder(encoderCfg),
swSugar,
logLevel,
)
logger = zap.New(core)
return logger
}