update scripts to use Postgres

kontor-scripts/json_to_postgres.py

@@ -23,12 +23,12 @@ def copy_data(postgres_conn, data_file: Path, log):
     log.info("read json file")
     with open(data_file, 'r') as json_file:
         json_load = json.load(json_file)
+        postgres_cursor.execute("SET session_replication_role='replica'")
         for table in json_load:
             log.info(f"{table}: {len(json_load[table])}")
             # result[table] = import_table(table, json_load[table])
-            truncate_statement = 'TRUNCATE {}'.format(table)
+            truncate_statement = 'TRUNCATE {} CASCADE'.format(table)
             #log.info(f"truncate: {truncate_statement}")
-            postgres_cursor.execute("SET FOREIGN_KEY_CHECKS = 0")
             postgres_cursor.execute(truncate_statement)
             items = json_load[table]
             for item in items:
@@ -47,7 +47,7 @@ def copy_data(postgres_conn, data_file: Path, log):
                     postgres_conn.commit()
                 except psycopg2.Error as error:
                     log.info('insert failed with %s', error)
-
+        postgres_cursor.execute("SET session_replication_role='origin'")
 
 if __name__ == '__main__':
     logger = get_logger(args.verbose, args.config)