| 29 | } |
| 30 | |
| 31 | func initLogger(isVerbose, silent bool, logFormat LogFormat, logPath string) (logger *zap.Logger, cleanupFn func()) { |
| 32 | logLevel := zapcore.InfoLevel |
| 33 | if isVerbose { |
| 34 | logLevel = zapcore.DebugLevel |
| 35 | } |
| 36 | if silent { |
| 37 | logLevel = zapcore.PanicLevel |
| 38 | } |
| 39 | |
| 40 | // lumberjack.Logger is already safe for concurrent use, so we don't need to |
| 41 | // lock it. |
| 42 | luLogger := &lumberjack.Logger{ |
| 43 | Filename: logPath, |
| 44 | MaxSize: 100, // megabytes |
| 45 | MaxBackups: 3, |
| 46 | MaxAge: 30, // days |
| 47 | Compress: true, |
| 48 | } |
| 49 | cfg := zap.NewProductionEncoderConfig() |
| 50 | // hide logger name like `console` |
| 51 | cfg.NameKey = zapcore.OmitKey |
| 52 | cfg.EncodeTime = zapcore.ISO8601TimeEncoder |
| 53 | fileCore := zapcore.NewCore(zapcore.NewJSONEncoder(cfg), zapcore.AddSync(luLogger), logLevel) |
| 54 | |
| 55 | var consoleEncoder zapcore.Encoder |
| 56 | opts := make([]zap.Option, 0) |
| 57 | switch logFormat { |
| 58 | case LogFormatJSON: |
| 59 | cfg := zap.NewProductionEncoderConfig() |
| 60 | cfg.NameKey = zapcore.OmitKey |
| 61 | cfg.EncodeTime = zapcore.ISO8601TimeEncoder |
| 62 | // never |
| 63 | opts = append(opts, zap.AddStacktrace(zapcore.InvalidLevel)) |
| 64 | consoleEncoder = zapcore.NewJSONEncoder(cfg) |
| 65 | case LogFormatConsole: |
| 66 | encCfg := zap.NewDevelopmentEncoderConfig() |
| 67 | encCfg.NameKey = zapcore.OmitKey |
| 68 | encCfg.EncodeLevel = zapcore.CapitalColorLevelEncoder |
| 69 | encCfg.EncodeTime = zapcore.TimeEncoderOfLayout("2006-01-02T15:04:05.000") |
| 70 | consoleEncoder = zapcore.NewConsoleEncoder(encCfg) |
| 71 | } |
| 72 | |
| 73 | // If it's not verbose, skip the instance_id field. |
| 74 | if !isVerbose { |
| 75 | consoleEncoder = skipFieldZapEncoder{ |
| 76 | Encoder: consoleEncoder, |
| 77 | fields: []string{"instance_id"}, |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | consoleCore := zapcore.NewCore(consoleEncoder, zapcore.Lock(os.Stdout), logLevel) |
| 82 | |
| 83 | // For the local console output, apply some filters that are usually not informative for the user. |
| 84 | if !isVerbose { |
| 85 | consoleCore = &filterZapCore{ |
| 86 | next: consoleCore, |
| 87 | predicate: consoleFilterPredicate, |
| 88 | } |