Source code for tests.system.providers.google.cloud.pubsub.example_pubsub_deferrable
## Licensed to the Apache Software Foundation (ASF) under one# or more contributor license agreements. See the NOTICE file# distributed with this work for additional information# regarding copyright ownership. The ASF licenses this file# to you under the Apache License, Version 2.0 (the# "License"); you may not use this file except in compliance# with the License. You may obtain a copy of the License at## http://www.apache.org/licenses/LICENSE-2.0## Unless required by applicable law or agreed to in writing,# software distributed under the License is distributed on an# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY# KIND, either express or implied. See the License for the# specific language governing permissions and limitations# under the License."""Example Airflow DAG that uses Google PubSub services."""from__future__importannotationsimportosfromdatetimeimportdatetimefromairflowimportmodelsfromairflow.providers.google.cloud.operators.pubsubimport(PubSubCreateSubscriptionOperator,PubSubCreateTopicOperator,PubSubDeleteSubscriptionOperator,PubSubDeleteTopicOperator,PubSubPublishMessageOperator,)fromairflow.providers.google.cloud.sensors.pubsubimportPubSubPullSensorfromairflow.utils.trigger_ruleimportTriggerRule
subscribe_task=PubSubCreateSubscriptionOperator(task_id="subscribe_task",project_id=PROJECT_ID,topic=TOPIC_ID)publish_task=PubSubPublishMessageOperator(task_id="publish_task",project_id=PROJECT_ID,topic=TOPIC_ID,messages=[MESSAGE,MESSAGE],)subscription=subscribe_task.output# [START howto_operator_gcp_pubsub_pull_message_with_async_sensor]pull_messages_async=PubSubPullSensor(task_id="pull_messages_async",ack_messages=True,project_id=PROJECT_ID,subscription=subscription,deferrable=True,)# [END howto_operator_gcp_pubsub_pull_message_with_async_sensor]unsubscribe_task=PubSubDeleteSubscriptionOperator(task_id="unsubscribe_task",project_id=PROJECT_ID,subscription=subscription,)unsubscribe_task.trigger_rule=TriggerRule.ALL_DONEdelete_topic=PubSubDeleteTopicOperator(task_id="delete_topic",topic=TOPIC_ID,project_id=PROJECT_ID)delete_topic.trigger_rule=TriggerRule.ALL_DONE(create_topic>>subscribe_task>>publish_task>>pull_messages_async>>unsubscribe_task>>delete_topic)# Task dependencies created via `XComArgs`:# subscribe_task >> pull_messages_async# subscribe_task >> unsubscribe_task# ### Everything below this line is not part of example #### ### Just for system tests purpose ###fromtests.system.utils.watcherimportwatcher# This test needs watcher in order to properly mark success/failure# when "tearDown" task with trigger rule is part of the DAGlist(dag.tasks)>>watcher()fromtests.system.utilsimportget_test_run# noqa: E402# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)