Source code for system.databricks.example_databricks_sql_warehouse

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"""Example Dag for starting and stopping an existing Databricks SQL warehouse."""

from __future__ import annotations

import os
from datetime import datetime

from airflow.providers.common.compat.sdk import DAG
from airflow.providers.databricks.operators.warehouse import (
    DatabricksStartWarehouseOperator,
    DatabricksStopWarehouseOperator,
)

DAG_ID = "example_databricks_sql_warehouse"
WAREHOUSE_ID = os.environ.get("WAREHOUSE_ID", "your-warehouse-id")

with DAG(
    dag_id=DAG_ID,
    schedule="@daily",
    start_date=datetime(2021, 1, 1),
    tags=["example"],
    catchup=False,
) as dag:
    # [START howto_operator_databricks_start_sql_warehouse]
    start_warehouse = DatabricksStartWarehouseOperator(
        task_id="start_warehouse",
        databricks_conn_id="databricks_default",
        warehouse_id=WAREHOUSE_ID,
        wait_for_termination=True,
    )
    # [END howto_operator_databricks_start_sql_warehouse]

    # [START howto_operator_databricks_stop_sql_warehouse]
    stop_warehouse = DatabricksStopWarehouseOperator(
        task_id="stop_warehouse",
        databricks_conn_id="databricks_default",
        warehouse_id=WAREHOUSE_ID,
        wait_for_termination=True,
        trigger_rule="all_done",
    )
    # [END howto_operator_databricks_stop_sql_warehouse]

    start_warehouse >> stop_warehouse

    from tests_common.test_utils.watcher import watcher

    list(dag.tasks) >> watcher()

from tests_common.test_utils.system_tests import get_test_run  # noqa: E402

test_run = get_test_run(dag)