Source code for system.amazon.aws.example_sqs

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from __future__ import annotations

from datetime import datetime

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 tests_common.test_utils.version_compat import AIRFLOW_V_3_0_PLUS

if AIRFLOW_V_3_0_PLUS:
    from airflow.sdk import DAG, chain, task
else:
    # Airflow 2.10 compat
    from airflow.decorators import task  # type: ignore[attr-defined,no-redef]
    from airflow.models.baseoperator import chain  # type: ignore[attr-defined,no-redef]
    from airflow.models.dag import DAG  # type: ignore[attr-defined,no-redef,assignment]
try:
    from airflow.sdk import TriggerRule
except ImportError:
    # Compatibility for Airflow < 3.1
    from airflow.utils.trigger_rule import TriggerRule  # type: ignore[no-redef,attr-defined]

from system.amazon.aws.utils import SystemTestContextBuilder

sys_test_context_task = SystemTestContextBuilder().build()

DAG_ID = "example_sqs"


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


@task(trigger_rule=TriggerRule.ALL_DONE)
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),
    catchup=False,
) as dag:
    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 }}",
    )
    publish_to_queue_2 = SqsPublishOperator(
        task_id="publish_to_queue_2",
        sqs_queue=sqs_queue,
        message_content="{{ task_instance }}",
    )
    # [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_common.test_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_common.test_utils.system_tests import get_test_run  # noqa: E402

# Needed to run the example DAG with pytest (see: contributing-docs/testing/system_tests.rst)
test_run = get_test_run(dag)