如果你正在对golang的日志框架做选型，我推荐zap
package log
import (
"testing"
"time"
"os"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
)
func NewEncoderConfig() zapcore.EncoderConfig {
return zapcore.EncoderConfig{
// Keys can be anything except the empty string.
TimeKey: "T",
LevelKey: "L",
NameKey: "N",
CallerKey: "C",
MessageKey: "M",
StacktraceKey: "S",
LineEnding: zapcore.DefaultLineEnding,
EncodeLevel: zapcore.CapitalLevelEncoder,
EncodeTime: TimeEncoder,
EncodeDuration: zapcore.StringDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
}
}
func TimeEncoder(t time.Time, enc zapcore.PrimitiveArrayEncoder) {
enc.AppendString(t.Format("2006-01-02 15:04:05.000"))
}
func TestLogrotate(t *testing.T) {
w := zapcore.AddSync(&lumberjack.Logger{
Filename: "foo.log",
MaxSize: 500, // megabytes
MaxBackups: 3,
MaxAge: 28, // days
})
core := zapcore.NewCore(
zapcore.NewConsoleEncoder(NewEncoderConfig()),
zapcore.NewMultiWriteSyncer(zapcore.AddSync(os.Stdout),
w),
zap.DebugLevel,
)
logger := zap.New(core, zap.AddCaller())
logger.Info("info")
}
打印结果：
2018-11-15 18:23:07.985 INFO log/zap_test.go:54 info
