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Use zap logger through the components and support zap logger level co…
…nfiguration through environment variable (#33) * Use zap logger through the components and support zap logger level configuration through environment variable
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package logging | ||
|
|
||
| import ( | ||
| "os" | ||
|
|
||
| "go.uber.org/zap" | ||
| "go.uber.org/zap/zapcore" | ||
| ) | ||
|
|
||
| var globalLogger *zap.Logger | ||
|
|
||
| func InitLogger() error { | ||
| logLevel := os.Getenv("LOG_LEVEL") | ||
| if logLevel == "" { | ||
| logLevel = "info" | ||
| } | ||
|
|
||
| config := zap.Config{ | ||
| Encoding: "json", | ||
| Level: zap.NewAtomicLevelAt(getLogLevel(logLevel)), | ||
| OutputPaths: []string{"stdout"}, | ||
| ErrorOutputPaths: []string{"stderr"}, | ||
| EncoderConfig: zapcore.EncoderConfig{ | ||
| TimeKey: "timestamp", | ||
| LevelKey: "level", | ||
| NameKey: "logger", | ||
| CallerKey: "caller", | ||
| FunctionKey: zapcore.OmitKey, | ||
| MessageKey: "message", | ||
| StacktraceKey: "stacktrace", | ||
| LineEnding: zapcore.DefaultLineEnding, | ||
| EncodeLevel: zapcore.LowercaseLevelEncoder, | ||
| EncodeTime: zapcore.ISO8601TimeEncoder, | ||
| EncodeDuration: zapcore.SecondsDurationEncoder, | ||
| EncodeCaller: zapcore.ShortCallerEncoder, | ||
| }, | ||
| } | ||
|
|
||
| logger, err := config.Build() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| globalLogger = logger | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func GetLogger(component string) *zap.Logger { | ||
| if globalLogger == nil { | ||
| InitLogger() | ||
| } | ||
|
|
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| return globalLogger.Named(component) | ||
| } | ||
|
|
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| func getLogLevel(level string) zapcore.Level { | ||
| switch level { | ||
| case "debug": | ||
| return zapcore.DebugLevel | ||
| case "info": | ||
| return zapcore.InfoLevel | ||
| case "warn": | ||
| return zapcore.WarnLevel | ||
| case "error": | ||
| return zapcore.ErrorLevel | ||
| default: | ||
| return zapcore.InfoLevel | ||
| } | ||
| } | ||
|
|
||
| func Sync() { | ||
| if globalLogger != nil { | ||
| globalLogger.Sync() | ||
| } | ||
| } |
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