feat: added application_name

pkg/broker/worker/worker.go

@@ -204,26 +204,36 @@ func (w *Worker) processJobs(ctx context.Context) {
 		}
 
 		if err := w.setTenantTx(ctx, tx); err != nil {
-			tx.Rollback()
+			if rbErr := tx.Rollback(); rbErr != nil {
+				w.logger.Error("failed to rollback transaction", "error", rbErr)
+			}
 			w.logger.Error("failed to set tenant", "error", err)
 			return
 		}
 
 		jobID, leaseToken, err := w.fetchNextJobTx(ctx, tx)
 		if err != nil {
-			tx.Rollback()
+			if rbErr := tx.Rollback(); rbErr != nil {
+				w.logger.Error("failed to rollback transaction", "error", rbErr)
+			}
 			w.logger.Error("failed to fetch job", "error", err)
 			return
 		}
 
 		if jobID <= 0 {
-			tx.Rollback() // No job found, rollback
-			return        // No more jobs
+			// No job found, rollback
+			if rbErr := tx.Rollback(); rbErr != nil {
+				w.logger.Error("failed to rollback transaction", "error", rbErr)
+			}
+			return // No more jobs
 		}
 
 		// Run the job
 		if err := w.runJobTx(ctx, tx, jobID, leaseToken); err != nil {
-			tx.Rollback() // Rollback on genuine infra failure
+			// Rollback on genuine infra failure
+			if rbErr := tx.Rollback(); rbErr != nil {
+				w.logger.Error("failed to rollback transaction", "error", rbErr)
+			}
 			w.logger.Error("failed to run job", "job_id", jobID, "error", err)
 		} else {
 			if err := tx.Commit(); err != nil {
@@ -247,13 +257,13 @@ func (w *Worker) setTenantTx(ctx context.Context, tx adapter.DBTransaction) erro
 
 // fetchNextJobTx fetches the next job from the queue within a transaction,
 // claiming it with a lease that must be presented back to broker_run.
-func (w *Worker) fetchNextJobTx(ctx context.Context, tx adapter.DBTransaction) (int64, string, error) {
+func (w *Worker) fetchNextJobTx(ctx context.Context, tx adapter.DBTransaction) (jobID int64, leaseToken string, err error) {
 	var retval int
 	var errmsg string
 	var nullableJobID sql.NullInt64
 	var nullableLeaseToken sql.NullString
 
-	err := tx.QueryRow(ctx,
+	err = tx.QueryRow(ctx,
 		"SELECT p_retval, p_errmsg, p_job_id, p_lease_token FROM broker.broker_get($1, $2, $3)",
 		w.QueueNumber, w.InstanceID, w.leaseSeconds,
 	).Scan(&retval, &errmsg, &nullableJobID, &nullableLeaseToken)