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Migrate Microsoft example DAGs to new design apache#22452 - mssql
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airflow/providers/microsoft/mssql/example_dags/__init__.py
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airflow/providers/microsoft/mssql/example_dags/example_mssql.py
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tests/system/providers/microsoft/mssql/example_mssql.py
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| # | ||
| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # regarding copyright ownership. The ASF licenses this file | ||
| # to you under the Apache License, Version 2.0 (the | ||
| # "License"); you may not use this file except in compliance | ||
| # with the License. You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, | ||
| # software distributed under the License is distributed on an | ||
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| # KIND, either express or implied. See the License for the | ||
| # specific language governing permissions and limitations | ||
| # under the License. | ||
| """ | ||
| Example use of MsSql related operators. | ||
| """ | ||
| # [START mssql_operator_howto_guide] | ||
| import os | ||
| from datetime import datetime | ||
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| from airflow import DAG | ||
| from airflow.providers.microsoft.mssql.hooks.mssql import MsSqlHook | ||
| from airflow.providers.microsoft.mssql.operators.mssql import MsSqlOperator | ||
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| ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID") | ||
| DAG_ID = "example_mssql" | ||
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| with DAG( | ||
| DAG_ID, | ||
| schedule_interval='@daily', | ||
| start_date=datetime(2021, 10, 1), | ||
| tags=['example'], | ||
| catchup=False, | ||
| ) as dag: | ||
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| # [START howto_operator_mssql] | ||
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| # Example of creating a task to create a table in MsSql | ||
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| create_table_mssql_task = MsSqlOperator( | ||
| task_id='create_country_table', | ||
| mssql_conn_id='airflow_mssql', | ||
| sql=r""" | ||
| CREATE TABLE Country ( | ||
| country_id INT NOT NULL IDENTITY(1,1) PRIMARY KEY, | ||
| name TEXT, | ||
| continent TEXT | ||
| ); | ||
| """, | ||
| dag=dag, | ||
| ) | ||
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| # [END howto_operator_mssql] | ||
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| # [START mssql_hook_howto_guide_insert_mssql_hook] | ||
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| @dag.task(task_id="insert_mssql_task") | ||
| def insert_mssql_hook(): | ||
| mssql_hook = MsSqlHook(mssql_conn_id='airflow_mssql', schema='airflow') | ||
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| rows = [ | ||
| ('India', 'Asia'), | ||
| ('Germany', 'Europe'), | ||
| ('Argentina', 'South America'), | ||
| ('Ghana', 'Africa'), | ||
| ('Japan', 'Asia'), | ||
| ('Namibia', 'Africa'), | ||
| ] | ||
| target_fields = ['name', 'continent'] | ||
| mssql_hook.insert_rows(table='Country', rows=rows, target_fields=target_fields) | ||
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| # [END mssql_hook_howto_guide_insert_mssql_hook] | ||
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| # [START mssql_operator_howto_guide_create_table_mssql_from_external_file] | ||
| # Example of creating a task that calls an sql command from an external file. | ||
| create_table_mssql_from_external_file = MsSqlOperator( | ||
| task_id='create_table_from_external_file', | ||
| mssql_conn_id='airflow_mssql', | ||
| sql='create_table.sql', | ||
| dag=dag, | ||
| ) | ||
| # [END mssql_operator_howto_guide_create_table_mssql_from_external_file] | ||
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| # [START mssql_operator_howto_guide_populate_user_table] | ||
| populate_user_table = MsSqlOperator( | ||
| task_id='populate_user_table', | ||
| mssql_conn_id='airflow_mssql', | ||
| sql=r""" | ||
| INSERT INTO Users (username, description) | ||
| VALUES ( 'Danny', 'Musician'); | ||
| INSERT INTO Users (username, description) | ||
| VALUES ( 'Simone', 'Chef'); | ||
| INSERT INTO Users (username, description) | ||
| VALUES ( 'Lily', 'Florist'); | ||
| INSERT INTO Users (username, description) | ||
| VALUES ( 'Tim', 'Pet shop owner'); | ||
| """, | ||
| ) | ||
| # [END mssql_operator_howto_guide_populate_user_table] | ||
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| # [START mssql_operator_howto_guide_get_all_countries] | ||
| get_all_countries = MsSqlOperator( | ||
| task_id="get_all_countries", | ||
| mssql_conn_id='airflow_mssql', | ||
| sql=r"""SELECT * FROM Country;""", | ||
| ) | ||
| # [END mssql_operator_howto_guide_get_all_countries] | ||
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| # [START mssql_operator_howto_guide_get_all_description] | ||
| get_all_description = MsSqlOperator( | ||
| task_id="get_all_description", | ||
| mssql_conn_id='airflow_mssql', | ||
| sql=r"""SELECT description FROM Users;""", | ||
| ) | ||
| # [END mssql_operator_howto_guide_get_all_description] | ||
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| # [START mssql_operator_howto_guide_params_passing_get_query] | ||
| get_countries_from_continent = MsSqlOperator( | ||
| task_id="get_countries_from_continent", | ||
| mssql_conn_id='airflow_mssql', | ||
| sql=r"""SELECT * FROM Country where {{ params.column }}='{{ params.value }}';""", | ||
| params={"column": "CONVERT(VARCHAR, continent)", "value": "Asia"}, | ||
| ) | ||
| # [END mssql_operator_howto_guide_params_passing_get_query] | ||
| ( | ||
| create_table_mssql_task | ||
| >> insert_mssql_hook() | ||
| >> create_table_mssql_from_external_file | ||
| >> populate_user_table | ||
| >> get_all_countries | ||
| >> get_all_description | ||
| >> get_countries_from_continent | ||
| ) | ||
| # [END mssql_operator_howto_guide] | ||
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| from tests.system.utils.watcher import watcher | ||
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| # 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 | ||
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| # Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest) | ||
| test_run = get_test_run(dag) |