Coverage for /pythoncovmergedfiles/medio/medio/src/airflow/build/lib/airflow/ti_deps/deps/not_previously_skipped_dep.py: 25%

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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.ti_deps.deps.base_ti_dep import BaseTIDep 

21 

22 

23class NotPreviouslySkippedDep(BaseTIDep): 

24 """ 

25 Determine if this task should be skipped. 

26 

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

28 be skipped. 

29 """ 

30 

31 NAME = "Not Previously Skipped" 

32 IGNORABLE = True 

33 IS_TASK_DEP = True 

34 

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

36 from airflow.models.skipmixin import ( 

37 XCOM_SKIPMIXIN_FOLLOWED, 

38 XCOM_SKIPMIXIN_KEY, 

39 XCOM_SKIPMIXIN_SKIPPED, 

40 SkipMixin, 

41 ) 

42 from airflow.utils.state import State 

43 

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

45 

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

47 

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

49 

50 for parent in upstream: 

51 if isinstance(parent, SkipMixin): 

52 if parent.task_id not in finished_task_ids: 

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

54 continue 

55 

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

57 

58 if prev_result is None: 

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

60 continue 

61 

62 should_skip = False 

63 if ( 

64 XCOM_SKIPMIXIN_FOLLOWED in prev_result 

65 and ti.task_id not in prev_result[XCOM_SKIPMIXIN_FOLLOWED] 

66 ): 

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

68 should_skip = True 

69 elif ( 

70 XCOM_SKIPMIXIN_SKIPPED in prev_result 

71 and ti.task_id in prev_result[XCOM_SKIPMIXIN_SKIPPED] 

72 ): 

73 # Skip any tasks that are in "skipped" 

74 should_skip = True 

75 

76 if should_skip: 

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

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

79 # ti does not execute. 

80 ti.set_state(State.SKIPPED, session) 

81 yield self._failing_status( 

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

83 ) 

84 return