/
logger.go
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/
logger.go
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/*
* Copyright 1999-2020 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package logger
import (
"os"
"sync"
"time"
"github.com/5idu/nacos-sdk-go/common/constant"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
)
var (
logger Logger
logLock sync.RWMutex
)
var levelMap = map[string]zapcore.Level{
"debug": zapcore.DebugLevel,
"info": zapcore.InfoLevel,
"warn": zapcore.WarnLevel,
"error": zapcore.ErrorLevel,
}
type Config struct {
Level string
Sampling *SamplingConfig
AppendToStdout bool
LogRollingConfig *lumberjack.Logger
}
type SamplingConfig struct {
Initial int
Thereafter int
Tick time.Duration
}
type NacosLogger struct {
Logger
}
// Logger is the interface for Logger types
type Logger interface {
Info(args ...interface{})
Warn(args ...interface{})
Error(args ...interface{})
Debug(args ...interface{})
Infof(fmt string, args ...interface{})
Warnf(fmt string, args ...interface{})
Errorf(fmt string, args ...interface{})
Debugf(fmt string, args ...interface{})
}
func init() {
zapLoggerConfig := zap.NewDevelopmentConfig()
zapLoggerEncoderConfig := zapcore.EncoderConfig{
TimeKey: "time",
LevelKey: "level",
NameKey: "logger",
CallerKey: "caller",
MessageKey: "message",
StacktraceKey: "stacktrace",
EncodeLevel: zapcore.CapitalColorLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.SecondsDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
}
zapLoggerConfig.EncoderConfig = zapLoggerEncoderConfig
zapLogger, _ := zapLoggerConfig.Build(zap.AddCaller(), zap.AddCallerSkip(1))
SetLogger(&NacosLogger{zapLogger.Sugar()})
}
func BuildLoggerConfig(clientConfig constant.ClientConfig) Config {
loggerConfig := Config{
Level: clientConfig.LogLevel,
AppendToStdout: clientConfig.AppendToStdout,
}
if clientConfig.LogSampling != nil {
loggerConfig.Sampling = &SamplingConfig{
Initial: clientConfig.LogSampling.Initial,
Thereafter: clientConfig.LogSampling.Thereafter,
Tick: clientConfig.LogSampling.Tick,
}
}
loggerConfig.LogRollingConfig = &lumberjack.Logger{
Filename: clientConfig.LogDir + string(os.PathSeparator) + constant.LOG_FILE_NAME,
}
logRollingConfig := clientConfig.LogRollingConfig
if logRollingConfig != nil {
loggerConfig.LogRollingConfig.MaxSize = logRollingConfig.MaxSize
loggerConfig.LogRollingConfig.MaxAge = logRollingConfig.MaxAge
loggerConfig.LogRollingConfig.MaxBackups = logRollingConfig.MaxBackups
loggerConfig.LogRollingConfig.LocalTime = logRollingConfig.LocalTime
loggerConfig.LogRollingConfig.Compress = logRollingConfig.Compress
}
return loggerConfig
}
// InitLogger is init global logger for nacos
func InitLogger(config Config) (err error) {
logLock.Lock()
defer logLock.Unlock()
logger, err = InitNacosLogger(config)
return
}
// InitNacosLogger is init nacos default logger
func InitNacosLogger(config Config) (Logger, error) {
logLevel := getLogLevel(config.Level)
encoder := getEncoder()
writer := config.getLogWriter()
if config.AppendToStdout {
writer = zapcore.NewMultiWriteSyncer(writer, zapcore.AddSync(os.Stdout))
}
core := zapcore.NewCore(zapcore.NewConsoleEncoder(encoder), writer, logLevel)
zaplogger := zap.New(core, zap.AddCaller(), zap.AddCallerSkip(1))
return &NacosLogger{zaplogger.Sugar()}, nil
}
func getLogLevel(level string) zapcore.Level {
if zapLevel, ok := levelMap[level]; ok {
return zapLevel
}
return zapcore.InfoLevel
}
func getEncoder() zapcore.EncoderConfig {
return zapcore.EncoderConfig{
TimeKey: "time",
LevelKey: "level",
NameKey: "logger",
CallerKey: "caller",
MessageKey: "message",
StacktraceKey: "stacktrace",
EncodeLevel: zapcore.CapitalLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.SecondsDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
}
}
// SetLogger sets logger for sdk
func SetLogger(log Logger) {
logLock.Lock()
defer logLock.Unlock()
logger = log
}
func GetLogger() Logger {
logLock.RLock()
defer logLock.RUnlock()
return logger
}
// getLogWriter get Lumberjack writer by LumberjackConfig
func (c *Config) getLogWriter() zapcore.WriteSyncer {
return zapcore.AddSync(c.LogRollingConfig)
}