Source code for tests.system.google.cloud.looker.example_looker

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"""
Example Airflow DAG that show how to use various Looker
operators to submit PDT materialization job and manage it.
"""

from __future__ import annotations

from datetime import datetime

from airflow.models.dag import DAG
from airflow.providers.google.cloud.operators.looker import LookerStartPdtBuildOperator
from airflow.providers.google.cloud.sensors.looker import LookerCheckPdtBuildSensor


[docs]
DAG_ID = "gcp_looker"


[docs]
LOOKER_CONNECTION_ID = "your_airflow_connection_for_looker"


[docs]
LOOKER_MODEL = "your_lookml_model"


[docs]
LOOKER_VIEW = "your_lookml_view"


with DAG(
    dag_id=DAG_ID,
    start_date=datetime(2021, 1, 1),
    catchup=False,
    tags=["example", "looker"],
) as dag:
    # [START cloud_looker_async_start_pdt_sensor]

[docs]
    start_pdt_task_async = LookerStartPdtBuildOperator(
        task_id="start_pdt_task_async",
        looker_conn_id=LOOKER_CONNECTION_ID,
        model=LOOKER_MODEL,
        view=LOOKER_VIEW,
        asynchronous=True,
    )


    check_pdt_task_async_sensor = LookerCheckPdtBuildSensor(
        task_id="check_pdt_task_async_sensor",
        looker_conn_id=LOOKER_CONNECTION_ID,
        materialization_id=start_pdt_task_async.output,
        poke_interval=10,
    )
    # [END cloud_looker_async_start_pdt_sensor]

    # [START how_to_cloud_looker_start_pdt_build_operator]
    build_pdt_task = LookerStartPdtBuildOperator(
        task_id="build_pdt_task",
        looker_conn_id=LOOKER_CONNECTION_ID,
        model=LOOKER_MODEL,
        view=LOOKER_VIEW,
    )
    # [END how_to_cloud_looker_start_pdt_build_operator]

    start_pdt_task_async >> check_pdt_task_async_sensor

    build_pdt_task

    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: tests/system/README.md#run_via_pytest)

[docs]
test_run = get_test_run(dag)