def run(self, pipeline):
"""Deploys given logical pipeline on Airflow.
Args:
pipeline: Logical pipeline containing pipeline args and components.
Returns:
An Airflow DAG.
"""
# Merge airflow-specific configs with pipeline args
self._config.update(pipeline.pipeline_args)
airflow_dag = airflow_pipeline.AirflowPipeline(**self._config)
# For every components in logical pipeline, add in real component.
for component in pipeline.components:
airflow_component.Component(
airflow_dag,
component_name=component.component_name,
unique_name=component.unique_name,
driver=component.driver,
executor=component.executor,
input_dict=self._prepare_input_dict(component.input_dict),
output_dict=self._prepare_output_dict(component.outputs),
exec_properties=component.exec_properties)
return airflow_dag
def test_airflow_component(self, mock_airflow_adapter_class,
mock_python_operator_class,
mock_branch_python_operator_class):
mock_airflow_adapter = mock.Mock()
mock_airflow_adapter.check_cache_and_maybe_prepare_execution = 'check_cache'
mock_airflow_adapter.python_exec = 'python_exec'
mock_airflow_adapter.publish_exec = 'publish_exec'
mock_airflow_adapter_class.return_value = mock_airflow_adapter
# Ensure the new component is added to the dag
component_count = len(self.parent_dag.subdags)
_ = airflow_component.Component(
parent_dag=self.parent_dag,
component_name='test_component',
unique_name='test_component_unique_name',
driver=driver.Driver,
executor=executor.Executor,
input_dict=self.input_dict,
output_dict=self.output_dict,
exec_properties=self.exec_properties)
self.assertEqual(len(self.parent_dag.subdags), component_count + 1)
def test_airflow_component(self, mock_tfx_worker_class,
mock_airflow_adapter_class):
mock_airflow_adapter = mock.Mock()
mock_airflow_adapter.check_cache_and_maybe_prepare_execution = 'check_cache'
mock_airflow_adapter.python_exec = 'python_exec'
mock_airflow_adapter.publish_exec = 'publish_exec'
mock_airflow_adapter_class.return_value = mock_airflow_adapter
mock_tfx_worker_class.return_value = models.DAG(
dag_id='pipeline_name.component_name.unique_name',
start_date=datetime.datetime(2019, 1, 1))
component = airflow_component.Component(
parent_dag=self.parent_dag,
component_name='component_name',
unique_name='unique_name',
driver=None,
executor=None,
input_dict=self.input_dict,
output_dict=self.output_dict,
exec_properties=self.exec_properties)
mock_tfx_worker_class.assert_called_with(
component_name='component_name',
task_id='pipeline_name.component_name.unique_name',
parent_dag=self.parent_dag,
input_dict=self.input_dict,
output_dict=self.output_dict,
exec_properties=self.exec_properties,
driver_options=mock.ANY,
driver_class=None,
executor_class=None,
additional_pipeline_args=None,
metadata_connection_config=self.parent_dag.
metadata_connection_config,
logger_config=mock.ANY)
self.assertItemsEqual(component.upstream_list, [])