Source code for tests.system.providers.apache.kylin.example_kylin_dag

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"""
This is an example DAG which uses the KylinCubeOperator.
The tasks below include kylin build, refresh, merge operation.
"""
from __future__ import annotations

import os
from datetime import datetime

from airflow import DAG
from airflow.providers.apache.kylin.operators.kylin_cube import KylinCubeOperator

[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]DAG_ID = "example_kylin_operator"
with DAG( dag_id=DAG_ID, schedule=None, start_date=datetime(2021, 1, 1), catchup=False, default_args={"project": "learn_kylin", "cube": "kylin_sales_cube"}, tags=["example"], ) as dag: @dag.task
[docs] def gen_build_time(): """ Gen build time and push to XCom (with key of "return_value") :return: A dict with build time values. """ return {"date_start": "1325347200000", "date_end": "1325433600000"}
gen_build_time_task = gen_build_time() gen_build_time_output_date_start = gen_build_time_task["date_start"] gen_build_time_output_date_end = gen_build_time_task["date_end"] build_task1 = KylinCubeOperator( task_id="kylin_build_1", command="build", start_time=gen_build_time_output_date_start, end_time=gen_build_time_output_date_end, is_track_job=True, ) build_task2 = KylinCubeOperator( task_id="kylin_build_2", command="build", start_time=gen_build_time_output_date_end, end_time="1325520000000", is_track_job=True, ) refresh_task1 = KylinCubeOperator( task_id="kylin_refresh_1", command="refresh", start_time=gen_build_time_output_date_start, end_time=gen_build_time_output_date_end, is_track_job=True, ) merge_task = KylinCubeOperator( task_id="kylin_merge", command="merge", start_time=gen_build_time_output_date_start, end_time="1325520000000", is_track_job=True, ) disable_task = KylinCubeOperator( task_id="kylin_disable", command="disable", ) purge_task = KylinCubeOperator( task_id="kylin_purge", command="purge", ) build_task3 = KylinCubeOperator( task_id="kylin_build_3", command="build", start_time=gen_build_time_output_date_end, end_time="1328730000000", ) build_task1 >> build_task2 >> refresh_task1 >> merge_task >> disable_task >> purge_task >> build_task3 # Task dependency created via `XComArgs`: # gen_build_time >> build_task1 # gen_build_time >> build_task2 # gen_build_time >> refresh_task1 # gen_build_time >> merge_task # gen_build_time >> build_task3 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)

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