Created
May 24, 2018 09:19
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test DAG
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| # -*- coding: utf-8 -*- | |
| # | |
| # 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. | |
| from datetime import timedelta | |
| from airflow.hooks.hive_hooks import HiveCliHook, HiveServer2Hook | |
| from airflow.models import DAG | |
| from airflow.operators.bash_operator import BashOperator | |
| from airflow.operators.hive_operator import HiveOperator | |
| from airflow.operators.python_operator import PythonOperator | |
| import airflow | |
| args = { | |
| 'owner': 'airflow', | |
| 'retries': 100, | |
| 'start_date': airflow.utils.dates.days_ago(2) | |
| } | |
| dag = DAG( | |
| dag_id='kevin_hive_s2_test', default_args=args, | |
| schedule_interval='0 0 * * *', | |
| dagrun_timeout=timedelta(minutes=60)) | |
| hql = "set airflow.ctx.dag_id;\nset airflow.ctx.dag_run_id;\n" \ | |
| "set airflow.ctx.task_id;\nset airflow.ctx.execution_date;\n" | |
| def dummy_hive_callback(**kwargs): | |
| hive_s2_hook = HiveServer2Hook('hiveserver2_silver') | |
| dag_id = hive_s2_hook.get_records(hql='set airflow.ctx.dag_id') | |
| dag_run_execution_date = \ | |
| hive_s2_hook.get_records(hql='set airflow.ctx.dag_run_id') | |
| task_id = hive_s2_hook.get_records(hql='set airflow.ctx.task_id') | |
| execution_date = \ | |
| hive_s2_hook.get_records(hql='set airflow.ctx.execution_date') | |
| print(dag_id) | |
| print(dag_run_execution_date) | |
| print(task_id) | |
| print(execution_date) | |
| hive_cli_hook = HiveCliHook('hive_cli_default') | |
| dag_id = hive_cli_hook.run_cli(hql='set airflow.ctx.dag_id') | |
| dag_run_execution_date = \ | |
| hive_cli_hook.run_cli(hql='set airflow.ctx.dag_run_id') | |
| task_id = hive_cli_hook.run_cli(hql='set airflow.ctx.task_id') | |
| execution_date = \ | |
| hive_cli_hook.run_cli(hql='set airflow.ctx.execution_date') | |
| print(dag_id) | |
| print(dag_run_execution_date) | |
| print(task_id) | |
| print(execution_date) | |
| PythonOperator( | |
| task_id='hive_in_python_op', | |
| dag=dag, | |
| python_callable=dummy_hive_callback | |
| ) | |
| BashOperator( | |
| task_id='echo_env_vars', | |
| dag=dag, | |
| bash_command="echo $AIRFLOW_CTX_DAD_ID;" | |
| "echo $AIRFLOW_CTX_TASK_ID;" | |
| "echo $AIRFLOW_CTX_EXECUTION_DATE;" | |
| "echo $AIRFLOW_CTX_DAG_RUN_ID;" | |
| "echo $AIRFLOW_HOME" | |
| ) | |
| HiveOperator( | |
| task_id='hive_cli', | |
| dag=dag, | |
| hql=hql, | |
| hive_cli_conn_id="hive_cli_default", | |
| provide_context=True | |
| ) | |
| HiveOperator( | |
| task_id='beeline', | |
| dag=dag, | |
| hql=hql, | |
| hive_cli_conn_id="hiveserver2_bronze_alejandro", | |
| provide_context=True | |
| ) |
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