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from __future__ import annotations

from datetime import datetime

from airflow.decorators import task
from airflow.models.baseoperator import chain
from airflow.models.dag import DAG
from import SqsHook
from import SqsPublishOperator
from import SqsSensor
from airflow.utils.trigger_rule import TriggerRule
from import SystemTestContextBuilder

[docs]sys_test_context_task = SystemTestContextBuilder().build()
[docs]DAG_ID = "example_sqs"
[docs]def create_queue(queue_name) -> str: return SqsHook().create_queue(queue_name=queue_name)["QueueUrl"]
[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/
[docs]test_run = get_test_run(dag)

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