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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.
18"""Airflow models."""
20from __future__ import annotations
22# Do not add new models to this -- this is for compat only
23__all__ = [
24 "DAG",
25 "ID_LEN",
26 "Base",
27 "BaseOperator",
28 "BaseOperatorLink",
29 "Connection",
30 "DagBag",
31 "DagWarning",
32 "DagModel",
33 "DagPickle",
34 "DagRun",
35 "DagTag",
36 "DbCallbackRequest",
37 "Log",
38 "MappedOperator",
39 "Operator",
40 "Param",
41 "Pool",
42 "RenderedTaskInstanceFields",
43 "SkipMixin",
44 "SlaMiss",
45 "TaskFail",
46 "TaskInstance",
47 "TaskReschedule",
48 "Trigger",
49 "Variable",
50 "XCom",
51 "clear_task_instances",
52]
55from typing import TYPE_CHECKING
58def import_all_models():
59 for name in __lazy_imports:
60 __getattr__(name)
62 import airflow.models.dagwarning
63 import airflow.models.dataset
64 import airflow.models.errors
65 import airflow.models.serialized_dag
66 import airflow.models.tasklog
69def __getattr__(name):
70 # PEP-562: Lazy loaded attributes on python modules
71 if name != "ImportError":
72 path = __lazy_imports.get(name)
73 if not path:
74 raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
76 from airflow.utils.module_loading import import_string
78 val = import_string(f"{path}.{name}")
79 else:
80 import warnings
82 from airflow.exceptions import RemovedInAirflow3Warning
83 from airflow.models.errors import ParseImportError
85 warnings.warn(
86 f"Import '{__name__}.ImportError' is deprecated due to shadowing with builtin exception "
87 f"ImportError and will be removed in the future. "
88 f"Please consider to use '{ParseImportError.__module__}.ParseImportError' instead.",
89 RemovedInAirflow3Warning,
90 stacklevel=2,
91 )
92 val = ParseImportError
94 # Store for next time
95 globals()[name] = val
96 return val
99__lazy_imports = {
100 "DAG": "airflow.models.dag",
101 "ID_LEN": "airflow.models.base",
102 "Base": "airflow.models.base",
103 "BaseOperator": "airflow.models.baseoperator",
104 "BaseOperatorLink": "airflow.models.baseoperatorlink",
105 "Connection": "airflow.models.connection",
106 "DagBag": "airflow.models.dagbag",
107 "DagModel": "airflow.models.dag",
108 "DagPickle": "airflow.models.dagpickle",
109 "DagRun": "airflow.models.dagrun",
110 "DagTag": "airflow.models.dag",
111 "DagWarning": "airflow.models.dagwarning",
112 "DbCallbackRequest": "airflow.models.db_callback_request",
113 "Log": "airflow.models.log",
114 "MappedOperator": "airflow.models.mappedoperator",
115 "Operator": "airflow.models.operator",
116 "Param": "airflow.models.param",
117 "Pool": "airflow.models.pool",
118 "RenderedTaskInstanceFields": "airflow.models.renderedtifields",
119 "SkipMixin": "airflow.models.skipmixin",
120 "SlaMiss": "airflow.models.slamiss",
121 "TaskFail": "airflow.models.taskfail",
122 "TaskInstance": "airflow.models.taskinstance",
123 "TaskReschedule": "airflow.models.taskreschedule",
124 "Trigger": "airflow.models.trigger",
125 "Variable": "airflow.models.variable",
126 "XCom": "airflow.models.xcom",
127 "clear_task_instances": "airflow.models.taskinstance",
128}
130if TYPE_CHECKING:
131 # I was unable to get mypy to respect a airflow/models/__init__.pyi, so
132 # having to resort back to this hacky method
133 from airflow.models.base import ID_LEN, Base
134 from airflow.models.baseoperator import BaseOperator
135 from airflow.models.baseoperatorlink import BaseOperatorLink
136 from airflow.models.connection import Connection
137 from airflow.models.dag import DAG, DagModel, DagTag
138 from airflow.models.dagbag import DagBag
139 from airflow.models.dagpickle import DagPickle
140 from airflow.models.dagrun import DagRun
141 from airflow.models.dagwarning import DagWarning
142 from airflow.models.db_callback_request import DbCallbackRequest
143 from airflow.models.log import Log
144 from airflow.models.mappedoperator import MappedOperator
145 from airflow.models.operator import Operator
146 from airflow.models.param import Param
147 from airflow.models.pool import Pool
148 from airflow.models.renderedtifields import RenderedTaskInstanceFields
149 from airflow.models.skipmixin import SkipMixin
150 from airflow.models.slamiss import SlaMiss
151 from airflow.models.taskfail import TaskFail
152 from airflow.models.taskinstance import TaskInstance, clear_task_instances
153 from airflow.models.taskreschedule import TaskReschedule
154 from airflow.models.trigger import Trigger
155 from airflow.models.variable import Variable
156 from airflow.models.xcom import XCom