Based on slog packaging, supports context tracking
var (
level slog.LevelVar // info
syncer = &lumberjack.Logger{Filename: "logger.log", LocalTime: true, MaxAge: 1}
)
func main() {
defer syncer.Close()
level.Set(logs.ParseLevel("debug"))
slog.SetDefault(slog.New(WrapHandler(slog.NewJSONHandler(
io.MultiWriter(os.Stdout, NewWriter(syncer, 10<<10)),
&slog.HandlerOptions{Level: &level}),
)))
slog.DebugContext(ctx, "DebugContext")
slog.InfoContext(ctx, "InfoContext")
slog.ErrorContext(ctx, "ErrorContext")
son := slog.With(slog.String("name", "son"))
son.ErrorContext(ctx, "son.ErrorContext")
}{"time":"2024-02-07T15:00:45.5510225+08:00","level":"DEBUG","msg":"DebugContext","trace":"b012ab24f1f864214f93435c150915ab","span":"9ed99b05197f2389"}
{"time":"2024-02-07T15:00:45.5757939+08:00","level":"INFO","msg":"InfoContext","trace":"b012ab24f1f864214f93435c150915ab","span":"9ed99b05197f2389"}
{"time":"2024-02-07T15:00:45.5757939+08:00","level":"ERROR","msg":"ErrorContext","trace":"b012ab24f1f864214f93435c150915ab","span":"9ed99b05197f2389"}
{"time":"2024-02-07T15:00:45.5763476+08:00","level":"ERROR","msg":"son.ErrorContext","name":"son","trace":"b012ab24f1f864214f93435c150915ab","span":"9ed99b05197f2389"