Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.11/site-packages/airflow/utils/orm_event_handlers.py: 45%

1# 

2# Licensed to the Apache Software Foundation (ASF) under one 

3# or more contributor license agreements. See the NOTICE file 

4# distributed with this work for additional information 

5# regarding copyright ownership. The ASF licenses this file 

6# to you under the Apache License, Version 2.0 (the 

7# "License"); you may not use this file except in compliance 

8# with the License. You may obtain a copy of the License at 

9# 

10# http://www.apache.org/licenses/LICENSE-2.0 

11# 

12# Unless required by applicable law or agreed to in writing, 

13# software distributed under the License is distributed on an 

14# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 

15# KIND, either express or implied. See the License for the 

16# specific language governing permissions and limitations 

17# under the License. 

18from __future__ import annotations 

19 

20import logging 

21import os 

22import time 

23import traceback 

24 

25from sqlalchemy import event, exc 

26 

27from airflow.configuration import conf 

28from airflow.utils.sqlalchemy import get_orm_mapper 

29 

30log = logging.getLogger(__name__) 

31 

32 

33def setup_event_handlers(engine): 

34 """Setups event handlers.""" 

35 from airflow.models import import_all_models 

36 

37 event.listen(get_orm_mapper(), "before_configured", import_all_models, once=True) 

38 

39 @event.listens_for(engine, "connect") 

40 def connect(dbapi_connection, connection_record): 

41 connection_record.info["pid"] = os.getpid() 

42 

43 if engine.dialect.name == "sqlite": 

44 

45 @event.listens_for(engine, "connect") 

46 def set_sqlite_pragma(dbapi_connection, connection_record): 

47 cursor = dbapi_connection.cursor() 

48 cursor.execute("PRAGMA foreign_keys=ON") 

49 cursor.execute("PRAGMA journal_mode=WAL") 

50 cursor.close() 

51 

52 # this ensures coherence in mysql when storing datetimes (not required for postgres) 

53 if engine.dialect.name == "mysql": 

54 

55 @event.listens_for(engine, "connect") 

56 def set_mysql_timezone(dbapi_connection, connection_record): 

57 cursor = dbapi_connection.cursor() 

58 cursor.execute("SET time_zone = '+00:00'") 

59 cursor.close() 

60 

61 @event.listens_for(engine, "checkout") 

62 def checkout(dbapi_connection, connection_record, connection_proxy): 

63 pid = os.getpid() 

64 if connection_record.info["pid"] != pid: 

65 connection_record.connection = connection_proxy.connection = None 

66 raise exc.DisconnectionError( 

67 f"Connection record belongs to pid {connection_record.info['pid']}, " 

68 f"attempting to check out in pid {pid}" 

69 ) 

70 

71 if conf.getboolean("debug", "sqlalchemy_stats", fallback=False): 

72 

73 @event.listens_for(engine, "before_cursor_execute") 

74 def before_cursor_execute(conn, cursor, statement, parameters, context, executemany): 

75 conn.info.setdefault("query_start_time", []).append(time.perf_counter()) 

76 

77 @event.listens_for(engine, "after_cursor_execute") 

78 def after_cursor_execute(conn, cursor, statement, parameters, context, executemany): 

79 total = time.perf_counter() - conn.info["query_start_time"].pop() 

80 file_name = [ 

81 f"'{f.name}':{f.filename}:{f.lineno}" 

82 for f in traceback.extract_stack() 

83 if "sqlalchemy" not in f.filename 

84 ][-1] 

85 stack = [f for f in traceback.extract_stack() if "sqlalchemy" not in f.filename] 

86 stack_info = ">".join([f"{f.filename.rpartition('/')[-1]}:{f.name}" for f in stack][-3:]) 

87 conn.info.setdefault("query_start_time", []).append(time.monotonic()) 

88 log.info( 

89 "@SQLALCHEMY %s |$ %s |$ %s |$ %s ", 

90 total, 

91 file_name, 

92 stack_info, 

93 statement.replace("\n", " "), 

94 )