Source code for tests.system.jdbc.example_jdbc_queries

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"""Example DAG demonstrating the usage of the JdbcOperator."""

from __future__ import annotations

import os
from datetime import datetime, timedelta

from airflow import DAG
from airflow.providers.common.sql.operators.sql import SQLExecuteQueryOperator
from airflow.providers.standard.operators.empty import EmptyOperator


[docs]
ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")


[docs]
DAG_ID = "example_jdbc_operator"


with DAG(
    dag_id=DAG_ID,
    schedule="0 0 * * *",
    start_date=datetime(2021, 1, 1),
    dagrun_timeout=timedelta(minutes=60),
    tags=["example"],
    catchup=False,
) as dag:

[docs]
    run_this_last = EmptyOperator(task_id="run_this_last")


    # [START howto_operator_jdbc_template]
    delete_data = SQLExecuteQueryOperator(
        task_id="delete_data",
        sql="delete from my_schema.my_table where dt = {{ ds }}",
        conn_id="my_jdbc_connection",
        autocommit=True,
    )
    # [END howto_operator_jdbc_template]

    # [START howto_operator_jdbc]
    insert_data = SQLExecuteQueryOperator(
        task_id="insert_data",
        sql="insert into my_schema.my_table select dt, value from my_schema.source_data",
        conn_id="my_jdbc_connection",
        autocommit=True,
    )
    # [END howto_operator_jdbc]

    delete_data >> insert_data >> run_this_last

    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)