chore: add debug message and error log message (#46)

Author: Eun

pkg/merge-with-label/server/server.go

@@ -63,7 +63,7 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 
 	logger := h.GetLoggerForContext(r.Context()).With().Str("event", githubEvent).Logger()
-
+	logger.Debug().Str("body", string(body)).Msg("got event")
 	switch githubEvent {
 	case "check_run":
 		h.handleCheckRun(&logger, githubID, body, w)

pkg/merge-with-label/worker/pull_request_worker.go

@@ -142,6 +142,7 @@ func (worker *pullRequestWorker) runLogic(rootLogger *zerolog.Logger, msg *commo
 		accessToken,
 	)
 	if err != nil {
+		logger.Error().Err(err).Msg("merge pull request failed")
 		return errors.WithStack(err)
 	}
 	if stopLogic {