|
| 1 | +package logging |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "os" |
| 6 | + "strings" |
| 7 | + |
| 8 | + "go.uber.org/zap" |
| 9 | + "go.uber.org/zap/zapcore" |
| 10 | +) |
| 11 | + |
| 12 | +// Custom log levels with Trace below Debug |
| 13 | +const ( |
| 14 | + TraceLevel = zapcore.Level(-8) // Below Debug (-4) |
| 15 | +) |
| 16 | + |
| 17 | +// customLowercaseLevelEncoder handles our custom Trace level display (lowercase) |
| 18 | +func customLowercaseLevelEncoder(level zapcore.Level, enc zapcore.PrimitiveArrayEncoder) { |
| 19 | + switch level { |
| 20 | + case TraceLevel: |
| 21 | + enc.AppendString("trace") |
| 22 | + default: |
| 23 | + zapcore.LowercaseLevelEncoder(level, enc) |
| 24 | + } |
| 25 | +} |
| 26 | + |
| 27 | +// customColorLevelEncoder handles our custom Trace level display (with colors) |
| 28 | +func customColorLevelEncoder(level zapcore.Level, enc zapcore.PrimitiveArrayEncoder) { |
| 29 | + switch level { |
| 30 | + case TraceLevel: |
| 31 | + enc.AppendString("\x1b[90mTRACE\x1b[0m") // Gray color for trace |
| 32 | + default: |
| 33 | + zapcore.CapitalColorLevelEncoder(level, enc) |
| 34 | + } |
| 35 | +} |
| 36 | + |
| 37 | +// Logger embeds zap.Logger and adds Trace level support |
| 38 | +type Logger struct { |
| 39 | + *zap.Logger |
| 40 | +} |
| 41 | + |
| 42 | +// SugaredLogger embeds zap.SugaredLogger and adds Trace level support |
| 43 | +type SugaredLogger struct { |
| 44 | + *zap.SugaredLogger |
| 45 | +} |
| 46 | + |
| 47 | +// New creates a new logger with the given name |
| 48 | +func New(name string) *Logger { |
| 49 | + // Check if we should use development config (console format) |
| 50 | + logFormat := os.Getenv("LOG_FORMAT") |
| 51 | + isDevelopment := logFormat == "development" || logFormat == "console" |
| 52 | + |
| 53 | + var cfg zap.Config |
| 54 | + if isDevelopment { |
| 55 | + cfg = zap.NewDevelopmentConfig() |
| 56 | + cfg.Level = zap.NewAtomicLevelAt(zapcore.DebugLevel) |
| 57 | + cfg.EncoderConfig.EncodeLevel = customColorLevelEncoder |
| 58 | + } else { |
| 59 | + cfg = zap.NewProductionConfig() |
| 60 | + cfg.Level = zap.NewAtomicLevelAt(zapcore.InfoLevel) |
| 61 | + cfg.EncoderConfig.EncodeLevel = customLowercaseLevelEncoder |
| 62 | + } |
| 63 | + |
| 64 | + // Set log level from environment (COG_LOG_LEVEL takes precedence, fallback to LOG_LEVEL) |
| 65 | + logLevel := os.Getenv("COG_LOG_LEVEL") |
| 66 | + if logLevel == "" { |
| 67 | + logLevel = os.Getenv("LOG_LEVEL") |
| 68 | + } |
| 69 | + if logLevel != "" { |
| 70 | + level, err := parseLevel(logLevel) |
| 71 | + if err != nil { |
| 72 | + fmt.Printf("Failed to parse log level \"%s\": %s\n", logLevel, err) //nolint:forbidigo // logger setup error reporting |
| 73 | + } else { |
| 74 | + cfg.Level = zap.NewAtomicLevelAt(level) |
| 75 | + } |
| 76 | + } |
| 77 | + |
| 78 | + // Set output file if LOG_FILE is specified |
| 79 | + logFile := os.Getenv("LOG_FILE") |
| 80 | + if logFile != "" { |
| 81 | + cfg.OutputPaths = []string{logFile} |
| 82 | + cfg.ErrorOutputPaths = []string{logFile} |
| 83 | + } else { |
| 84 | + cfg.OutputPaths = []string{"stdout"} |
| 85 | + cfg.ErrorOutputPaths = []string{"stderr"} |
| 86 | + } |
| 87 | + |
| 88 | + // Common encoder config |
| 89 | + cfg.EncoderConfig.TimeKey = "timestamp" |
| 90 | + cfg.EncoderConfig.LevelKey = "severity" |
| 91 | + cfg.EncoderConfig.NameKey = "logger" |
| 92 | + cfg.EncoderConfig.CallerKey = "caller" |
| 93 | + cfg.EncoderConfig.MessageKey = "message" |
| 94 | + cfg.EncoderConfig.StacktraceKey = "stacktrace" |
| 95 | + cfg.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder |
| 96 | + cfg.EncoderConfig.EncodeDuration = zapcore.StringDurationEncoder |
| 97 | + cfg.EncoderConfig.EncodeCaller = zapcore.ShortCallerEncoder |
| 98 | + |
| 99 | + // Disable sampling for now (can be re-enabled later if needed) |
| 100 | + cfg.Sampling = nil |
| 101 | + |
| 102 | + zapLogger, err := cfg.Build() |
| 103 | + if err != nil { |
| 104 | + panic(fmt.Sprintf("Failed to build logger: %v", err)) |
| 105 | + } |
| 106 | + |
| 107 | + return &Logger{Logger: zapLogger.Named(name)} |
| 108 | +} |
| 109 | + |
| 110 | +// parseLevel parses log level string including our custom "trace" level |
| 111 | +func parseLevel(level string) (zapcore.Level, error) { |
| 112 | + switch strings.ToLower(level) { |
| 113 | + case "trace": |
| 114 | + return TraceLevel, nil |
| 115 | + case "debug": |
| 116 | + return zapcore.DebugLevel, nil |
| 117 | + case "info": |
| 118 | + return zapcore.InfoLevel, nil |
| 119 | + case "warn", "warning": |
| 120 | + return zapcore.WarnLevel, nil |
| 121 | + case "error": |
| 122 | + return zapcore.ErrorLevel, nil |
| 123 | + default: |
| 124 | + return zapcore.InfoLevel, fmt.Errorf("unknown log level: %s", level) |
| 125 | + } |
| 126 | +} |
| 127 | + |
| 128 | +// Override Sugar to return our custom SugaredLogger |
| 129 | +func (l *Logger) Sugar() *SugaredLogger { |
| 130 | + return &SugaredLogger{SugaredLogger: l.Logger.Sugar()} |
| 131 | +} |
| 132 | + |
| 133 | +// Override Named to return our custom Logger |
| 134 | +func (l *Logger) Named(name string) *Logger { |
| 135 | + return &Logger{Logger: l.Logger.Named(name)} |
| 136 | +} |
| 137 | + |
| 138 | +// Override With to return our custom Logger |
| 139 | +func (l *Logger) With(fields ...zap.Field) *Logger { |
| 140 | + return &Logger{Logger: l.Logger.With(fields...)} |
| 141 | +} |
| 142 | + |
| 143 | +// Override WithOptions to return our custom Logger |
| 144 | +func (l *Logger) WithOptions(opts ...zap.Option) *Logger { |
| 145 | + return &Logger{Logger: l.Logger.WithOptions(opts...)} |
| 146 | +} |
| 147 | + |
| 148 | +// Add Trace method to Logger |
| 149 | +func (l *Logger) Trace(msg string, fields ...zap.Field) { |
| 150 | + l.Log(TraceLevel, msg, fields...) |
| 151 | +} |
| 152 | + |
| 153 | +// Add Trace method to SugaredLogger |
| 154 | +func (s *SugaredLogger) Trace(args ...any) { |
| 155 | + s.Log(TraceLevel, args...) |
| 156 | +} |
| 157 | + |
| 158 | +// Add Tracew method to SugaredLogger |
| 159 | +func (s *SugaredLogger) Tracew(msg string, keysAndValues ...any) { |
| 160 | + s.Logw(TraceLevel, msg, keysAndValues...) |
| 161 | +} |
| 162 | + |
| 163 | +// Override With to return our custom SugaredLogger |
| 164 | +func (s *SugaredLogger) With(args ...any) *SugaredLogger { |
| 165 | + return &SugaredLogger{SugaredLogger: s.SugaredLogger.With(args...)} |
| 166 | +} |
| 167 | + |
| 168 | +// Override Named to return our custom SugaredLogger |
| 169 | +func (s *SugaredLogger) Named(name string) *SugaredLogger { |
| 170 | + return &SugaredLogger{SugaredLogger: s.SugaredLogger.Named(name)} |
| 171 | +} |
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