98 lines
2.5 KiB
Go
98 lines
2.5 KiB
Go
package pkg
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import (
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"context"
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"os"
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"strconv"
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"github.com/mattn/go-colorable"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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"gopkg.in/natefinch/lumberjack.v2"
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)
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type LoggerConfig struct {
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Level zapcore.Level
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Filename string
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MaxSize int
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MaxAge int
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MaxBackups int
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Compress bool
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ConsoleEncoding bool // true for Console output, false for JSON
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}
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var loggerInstance *zap.Logger
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// GetLogger returns a singleton logger instance
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func GetLogger(ctx context.Context, config LoggerConfig) *zap.Logger {
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if loggerInstance == nil {
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createOrUpdateInstance(config)
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}
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return loggerInstance
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}
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func createOrUpdateInstance(config LoggerConfig) *zap.Logger {
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core := zapcore.NewTee(
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createFileCore(config),
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createStdoutCore(config),
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)
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loggerInstance = zap.New(core).WithOptions(
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zap.IncreaseLevel(config.Level),
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)
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return loggerInstance
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}
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// createFileCore creates the file logging core
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func createFileCore(config LoggerConfig) zapcore.Core {
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fileEncoderConfig := zap.NewProductionEncoderConfig()
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fileEncoder := zapcore.NewJSONEncoder(fileEncoderConfig)
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fileWriteSyncer := zapcore.AddSync(&lumberjack.Logger{
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Filename: config.Filename,
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MaxSize: config.MaxSize,
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MaxAge: config.MaxAge,
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MaxBackups: config.MaxBackups,
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Compress: config.Compress,
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})
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return zapcore.NewCore(fileEncoder, fileWriteSyncer, zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
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return lvl >= zapcore.ErrorLevel
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}))
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}
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// createStdoutCore creates the stdout logging core based on config.ConsoleEncoding
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func createStdoutCore(config LoggerConfig) zapcore.Core {
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var encoder zapcore.Encoder
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encoderConfig := zap.NewDevelopmentEncoderConfig()
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encoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
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encoderConfig.TimeKey = ""
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if config.ConsoleEncoding {
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encoder = zapcore.NewConsoleEncoder(encoderConfig)
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} else {
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encoder = zapcore.NewJSONEncoder(encoderConfig)
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}
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stdoutWriteSyncer := zapcore.AddSync(colorable.NewColorableStdout())
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return zapcore.NewCore(encoder, stdoutWriteSyncer, zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
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return true
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}))
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}
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func OverrideLoggerConfig(config LoggerConfig) {
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Logger = createOrUpdateInstance(config)
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}
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var level, err = strconv.Atoi(os.Getenv("LOG_LEVEL"))
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var Logger = GetLogger(context.Background(), LoggerConfig{
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Level: zapcore.Level(level),
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Filename: "./tmp/error.log",
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MaxSize: 100,
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MaxAge: 90,
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MaxBackups: 30,
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Compress: true,
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ConsoleEncoding: true,
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})
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