Coverage for /pythoncovmergedfiles/medio/medio/src/airflow/build/lib/airflow/ti_deps/deps/not_previously_skipped_dep.py: 24%

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

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

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

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17# under the License. 

18from __future__ import annotations 

19 

20from airflow.models.taskinstance import PAST_DEPENDS_MET 

21from airflow.ti_deps.deps.base_ti_dep import BaseTIDep 

22 

23 

24class NotPreviouslySkippedDep(BaseTIDep): 

25 """ 

26 Determine if this task should be skipped. 

27 

28 Based on any of the task's direct upstream relatives have decided this task should 

29 be skipped. 

30 """ 

31 

32 NAME = "Not Previously Skipped" 

33 IGNORABLE = True 

34 IS_TASK_DEP = True 

35 

36 def _get_dep_statuses(self, ti, session, dep_context): 

37 from airflow.models.skipmixin import ( 

38 XCOM_SKIPMIXIN_FOLLOWED, 

39 XCOM_SKIPMIXIN_KEY, 

40 XCOM_SKIPMIXIN_SKIPPED, 

41 SkipMixin, 

42 ) 

43 from airflow.utils.state import State 

44 

45 upstream = ti.task.get_direct_relatives(upstream=True) 

46 

47 finished_tis = dep_context.ensure_finished_tis(ti.get_dagrun(session), session) 

48 

49 finished_task_ids = {t.task_id for t in finished_tis} 

50 

51 for parent in upstream: 

52 if isinstance(parent, SkipMixin): 

53 if parent.task_id not in finished_task_ids: 

54 # This can happen if the parent task has not yet run. 

55 continue 

56 

57 prev_result = ti.xcom_pull(task_ids=parent.task_id, key=XCOM_SKIPMIXIN_KEY, session=session) 

58 

59 if prev_result is None: 

60 # This can happen if the parent task has not yet run. 

61 continue 

62 

63 should_skip = False 

64 if ( 

65 XCOM_SKIPMIXIN_FOLLOWED in prev_result 

66 and ti.task_id not in prev_result[XCOM_SKIPMIXIN_FOLLOWED] 

67 ): 

68 # Skip any tasks that are not in "followed" 

69 should_skip = True 

70 elif ( 

71 XCOM_SKIPMIXIN_SKIPPED in prev_result 

72 and ti.task_id in prev_result[XCOM_SKIPMIXIN_SKIPPED] 

73 ): 

74 # Skip any tasks that are in "skipped" 

75 should_skip = True 

76 

77 if should_skip: 

78 # If the parent SkipMixin has run, and the XCom result stored indicates this 

79 # ti should be skipped, set ti.state to SKIPPED and fail the rule so that the 

80 # ti does not execute. 

81 if dep_context.wait_for_past_depends_before_skipping: 

82 past_depends_met = ti.xcom_pull( 

83 task_ids=ti.task_id, key=PAST_DEPENDS_MET, session=session, default=False 

84 ) 

85 if not past_depends_met: 

86 yield self._failing_status( 

87 reason=("Task should be skipped but the the past depends are not met") 

88 ) 

89 return 

90 ti.set_state(State.SKIPPED, session) 

91 yield self._failing_status( 

92 reason=f"Skipping because of previous XCom result from parent task {parent.task_id}" 

93 ) 

94 return