:py:mod:`airflow.models.skipmixin`
==================================

.. py:module:: airflow.models.skipmixin


Module Contents
---------------

Classes
~~~~~~~

.. autoapisummary::

   airflow.models.skipmixin.SkipMixin


Attributes
~~~~~~~~~~

.. autoapisummary::

   airflow.models.skipmixin.XCOM_SKIPMIXIN_KEY
   airflow.models.skipmixin.XCOM_SKIPMIXIN_SKIPPED
   airflow.models.skipmixin.XCOM_SKIPMIXIN_FOLLOWED


.. py:data:: XCOM_SKIPMIXIN_KEY
   :annotation: = skipmixin_key

   
.. py:data:: XCOM_SKIPMIXIN_SKIPPED
   :annotation: = skipped

   
.. py:data:: XCOM_SKIPMIXIN_FOLLOWED
   :annotation: = followed

   
.. py:class:: SkipMixin(context=None)

   Bases: :py:obj:`airflow.utils.log.logging_mixin.LoggingMixin`

   A Mixin to skip Tasks Instances

   .. py:method:: skip(self, dag_run, execution_date, tasks, session = NEW_SESSION)

      Sets tasks instances to skipped from the same dag run.

      If this instance has a `task_id` attribute, store the list of skipped task IDs to XCom
      so that NotPreviouslySkippedDep knows these tasks should be skipped when they
      are cleared.

      :param dag_run: the DagRun for which to set the tasks to skipped
      :param execution_date: execution_date
      :param tasks: tasks to skip (not task_ids)
      :param session: db session to use


   .. py:method:: skip_all_except(self, ti, branch_task_ids)

      This method implements the logic for a branching operator; given a single
      task ID or list of task IDs to follow, this skips all other tasks
      immediately downstream of this operator.

      branch_task_ids is stored to XCom so that NotPreviouslySkippedDep knows skipped tasks or
      newly added tasks should be skipped when they are cleared.