airflow.operators.branch¶
Branching operators
Module Contents¶
Classes¶
This is a base class for creating operators with branching functionality, |
- class airflow.operators.branch.BaseBranchOperator(task_id, owner=DEFAULT_OWNER, email=None, email_on_retry=conf.getboolean('email', 'default_email_on_retry', fallback=True), email_on_failure=conf.getboolean('email', 'default_email_on_failure', fallback=True), retries=DEFAULT_RETRIES, retry_delay=DEFAULT_RETRY_DELAY, retry_exponential_backoff=False, max_retry_delay=None, start_date=None, end_date=None, depends_on_past=False, ignore_first_depends_on_past=conf.getboolean('scheduler', 'ignore_first_depends_on_past_by_default'), wait_for_downstream=False, dag=None, params=None, default_args=None, priority_weight=DEFAULT_PRIORITY_WEIGHT, weight_rule=DEFAULT_WEIGHT_RULE, queue=DEFAULT_QUEUE, pool=None, pool_slots=DEFAULT_POOL_SLOTS, sla=None, execution_timeout=DEFAULT_TASK_EXECUTION_TIMEOUT, on_execute_callback=None, on_failure_callback=None, on_success_callback=None, on_retry_callback=None, pre_execute=None, post_execute=None, trigger_rule=DEFAULT_TRIGGER_RULE, resources=None, run_as_user=None, task_concurrency=None, max_active_tis_per_dag=None, executor_config=None, do_xcom_push=True, inlets=None, outlets=None, task_group=None, doc=None, doc_md=None, doc_json=None, doc_yaml=None, doc_rst=None, **kwargs)[source]¶
Bases:
airflow.models.BaseOperator,airflow.models.skipmixin.SkipMixinThis is a base class for creating operators with branching functionality, similarly to BranchPythonOperator.
Users should subclass this operator and implement the function choose_branch(self, context). This should run whatever business logic is needed to determine the branch, and return either the task_id for a single task (as a str) or a list of task_ids.
The operator will continue with the returned task_id(s), and all other tasks directly downstream of this operator will be skipped.