def execute(self, context: Context):
if isinstance(self.execution_date, datetime.datetime):
parsed_execution_date = self.execution_date
elif isinstance(self.execution_date, str):
parsed_execution_date = timezone.parse(self.execution_date)
else:
parsed_execution_date = timezone.utcnow()
if self.trigger_run_id:
run_id = self.trigger_run_id
else:
run_id = DagRun.generate_run_id(DagRunType.MANUAL,
parsed_execution_date)
try:
dag_run = trigger_dag(
dag_id=self.trigger_dag_id,
run_id=run_id,
conf=self.conf,
execution_date=parsed_execution_date,
replace_microseconds=False,
)
except DagRunAlreadyExists as e:
if self.reset_dag_run:
self.log.info("Clearing %s on %s", self.trigger_dag_id,
parsed_execution_date)
# Get target dag object and call clear()
dag_model = DagModel.get_current(self.trigger_dag_id)
if dag_model is None:
raise DagNotFound(
f"Dag id {self.trigger_dag_id} not found in DagModel")
dag_bag = DagBag(dag_folder=dag_model.fileloc,
read_dags_from_db=True)
dag = dag_bag.get_dag(self.trigger_dag_id)
dag.clear(start_date=parsed_execution_date,
end_date=parsed_execution_date)
dag_run = DagRun.find(dag_id=dag.dag_id, run_id=run_id)[0]
else:
raise e
if dag_run is None:
raise RuntimeError("The dag_run should be set here!")
# Store the execution date from the dag run (either created or found above) to
# be used when creating the extra link on the webserver.
ti = context['task_instance']
ti.xcom_push(key=XCOM_EXECUTION_DATE_ISO,
value=dag_run.execution_date.isoformat())
ti.xcom_push(key=XCOM_RUN_ID, value=dag_run.run_id)
if self.wait_for_completion:
# wait for dag to complete
while True:
self.log.info(
'Waiting for %s on %s to become allowed state %s ...',
self.trigger_dag_id,
dag_run.execution_date,
self.allowed_states,
)
time.sleep(self.poke_interval)
dag_run.refresh_from_db()
state = dag_run.state
if state in self.failed_states:
raise AirflowException(
f"{self.trigger_dag_id} failed with failed states {state}"
)
if state in self.allowed_states:
self.log.info("%s finished with allowed state %s",
self.trigger_dag_id, state)
return
def trigger_dag(self, dag_id, run_id=None, conf=None, execution_date=None):
dag_run = trigger_dag.trigger_dag(dag_id=dag_id,
run_id=run_id,
conf=conf,
execution_date=execution_date)
return f"Created {dag_run}"