def test_roundtrip_provider_example_dags(self):
dags = collect_dags([
"airflow/providers/*/example_dags",
"airflow/providers/*/*/example_dags",
])
# Verify deserialized DAGs.
for dag in dags.values():
serialized_dag = SerializedDAG.from_json(SerializedDAG.to_json(dag))
self.validate_deserialized_dag(serialized_dag, dag)
def test_task_group_serialization(self):
"""
Test TaskGroup serialization/deserialization.
"""
from airflow.operators.dummy_operator import DummyOperator
from airflow.utils.task_group import TaskGroup
execution_date = datetime(2020, 1, 1)
with DAG("test_task_group_serialization",
start_date=execution_date) as dag:
task1 = DummyOperator(task_id="task1")
with TaskGroup("group234") as group234:
_ = DummyOperator(task_id="task2")
with TaskGroup("group34") as group34:
_ = DummyOperator(task_id="task3")
_ = DummyOperator(task_id="task4")
task5 = DummyOperator(task_id="task5")
task1 >> group234
group34 >> task5
dag_dict = SerializedDAG.to_dict(dag)
SerializedDAG.validate_schema(dag_dict)
json_dag = SerializedDAG.from_json(SerializedDAG.to_json(dag))
self.validate_deserialized_dag(json_dag, dag)
serialized_dag = SerializedDAG.deserialize_dag(
SerializedDAG.serialize_dag(dag))
assert serialized_dag.task_group.children
assert serialized_dag.task_group.children.keys(
) == dag.task_group.children.keys()
def check_task_group(node):
try:
children = node.children.values()
except AttributeError:
# Round-trip serialization and check the result
expected_serialized = SerializedBaseOperator.serialize_operator(
dag.get_task(node.task_id))
expected_deserialized = SerializedBaseOperator.deserialize_operator(
expected_serialized)
expected_dict = SerializedBaseOperator.serialize_operator(
expected_deserialized)
assert node
assert SerializedBaseOperator.serialize_operator(
node) == expected_dict
return
for child in children:
check_task_group(child)
check_task_group(serialized_dag.task_group)
def test_edge_info_serialization(self):
"""
Tests edge_info serialization/deserialization.
"""
from airflow.operators.dummy import DummyOperator
from airflow.utils.edgemodifier import Label
with DAG("test_edge_info_serialization", start_date=datetime(2020, 1, 1)) as dag:
task1 = DummyOperator(task_id="task1")
task2 = DummyOperator(task_id="task2")
task1 >> Label("test label") >> task2 # pylint: disable=W0106
dag_dict = SerializedDAG.to_dict(dag)
SerializedDAG.validate_schema(dag_dict)
json_dag = SerializedDAG.from_json(SerializedDAG.to_json(dag))
self.validate_deserialized_dag(json_dag, dag)
serialized_dag = SerializedDAG.deserialize_dag(SerializedDAG.serialize_dag(dag))
assert serialized_dag.edge_info == dag.edge_info
def serialize_subprocess(queue, dag_folder):
"""Validate pickle in a subprocess."""
dags = collect_dags(dag_folder)
for dag in dags.values():
queue.put(SerializedDAG.to_json(dag))
queue.put(None)
