Source code for tests.system.providers.amazon.aws.example_sqs

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from datetime import datetime

from airflow import DAG
from airflow.decorators import task
from airflow.models.baseoperator import chain
from airflow.providers.amazon.aws.hooks.sqs import SqsHook
from airflow.providers.amazon.aws.operators.sqs import SqsPublishOperator
from airflow.providers.amazon.aws.sensors.sqs import SqsSensor
from airflow.utils.trigger_rule import TriggerRule
from tests.system.providers.amazon.aws.utils import SystemTestContextBuilder

[docs]sys_test_context_task = SystemTestContextBuilder().build()

[docs]DAG_ID = 'example_sqs'


@task
[docs]def create_queue(queue_name) -> str:
    return SqsHook().create_queue(queue_name=queue_name)['QueueUrl']


@task(trigger_rule=TriggerRule.ALL_DONE)
[docs]def delete_queue(queue_url):
    SqsHook().conn.delete_queue(QueueUrl=queue_url)


with DAG(
    dag_id=DAG_ID,
    schedule='@once',
    start_date=datetime(2021, 1, 1),
    tags=['example'],
    catchup=False,
) as dag:
[docs]    test_context = sys_test_context_task()
    env_id = test_context['ENV_ID']

    sns_queue_name = f'{env_id}-example-queue'

    sqs_queue = create_queue(sns_queue_name)

    # [START howto_operator_sqs]
    publish_to_queue_1 = SqsPublishOperator(
        task_id='publish_to_queue_1',
        sqs_queue=sqs_queue,
        message_content='{{ task_instance }}-{{ logical_date }}',
    )
    publish_to_queue_2 = SqsPublishOperator(
        task_id='publish_to_queue_2',
        sqs_queue=sqs_queue,
        message_content='{{ task_instance }}-{{ logical_date }}',
    )
    # [END howto_operator_sqs]

    # [START howto_sensor_sqs]
    read_from_queue = SqsSensor(
        task_id='read_from_queue',
        sqs_queue=sqs_queue,
    )
    # Retrieve multiple batches of messages from SQS.
    # The SQS API only returns a maximum of 10 messages per poll.
    read_from_queue_in_batch = SqsSensor(
        task_id='read_from_queue_in_batch',
        sqs_queue=sqs_queue,
        # Get maximum 10 messages each poll
        max_messages=10,
        # Combine 3 polls before returning results
        num_batches=3,
    )
    # [END howto_sensor_sqs]

    chain(
        # TEST SETUP
        test_context,
        sqs_queue,
        # TEST BODY
        publish_to_queue_1,
        read_from_queue,
        publish_to_queue_2,
        read_from_queue_in_batch,
        # TEST TEARDOWN
        delete_queue(sqs_queue),
    )

    from tests.system.utils.watcher import watcher

    # This test needs watcher in order to properly mark success/failure
    # when "tearDown" task with trigger rule is part of the DAG
    list(dag.tasks) >> watcher()


from tests.system.utils import get_test_run  # noqa: E402

# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
[docs]test_run = get_test_run(dag)