log mariadb commit errors explicitly

mediametadatatodb_app/resources/MediametadataToDB.py

@@ -318,18 +318,36 @@ class MediametadataToDB:
                                               "digitalObject is unavailable")
                     if record_number % 100 == 0:
                         _write_values_in_db(mariadb_cursor, record_values_for_db)
-                        mariadb_connection.commit()
-                        for record_value in record_values_for_db:
-                            logging.info(f'Record {record_value["sig"]} successfully indexed')
-                            reporter.send_message(record_value['sig'], "SUCCESS",
-                                                  "Indexing successful")
+                        try:
+                            mariadb_connection.commit()
+                            for record_value in record_values_for_db:
+                                logging.info(f'Record {record_value["sig"]} successfully indexed')
+                                reporter.send_message(record_value['sig'], "SUCCESS",
+                                                      "Indexing successful")
+                        except mariadb.Error as error:
+                            logging.error(error)
+                            for record_value in record_values_for_db:
+                                logging.info(f'Indexing of record {record_value["sig"]} failed')
+                                reporter.send_message(record_value['sig'], "FATAL",
+                                                      "Indexing failed")
                         record_values_for_db = []
                         consumer.commit()
                     if counter % 1000 == 0:
                         logging.info('{} messages read till now'.format(counter))
                 # arriving here means there are no new messages to poll from
                 _write_values_in_db(mariadb_cursor, record_values_for_db)
-                mariadb_connection.commit()
+                try:
+                    mariadb_connection.commit()
+                    for record_value in record_values_for_db:
+                        logging.info(f'Record {record_value["sig"]} successfully indexed')
+                        reporter.send_message(record_value['sig'], "SUCCESS",
+                                              "Indexing successful")
+                except mariadb.Error as error:
+                    logging.error(error)
+                    for record_value in record_values_for_db:
+                        logging.info(f'Indexing of record {record_value["sig"]} failed')
+                        reporter.send_message(record_value['sig'], "FATAL",
+                                              "Indexing failed")
                 for record_value in record_values_for_db:
                     reporter.send_message(record_value['sig'], "SUCCESS", "Indexing successful")
                 record_values_for_db = []