kaxil closed pull request #4244: [AIRFLOW-3403] Create Athena sensor URL: https://github.com/apache/incubator-airflow/pull/4244
This is a PR merged from a forked repository. As GitHub hides the original diff on merge, it is displayed below for the sake of provenance: As this is a foreign pull request (from a fork), the diff is supplied below (as it won't show otherwise due to GitHub magic): diff --git a/airflow/contrib/sensors/aws_athena_sensor.py b/airflow/contrib/sensors/aws_athena_sensor.py new file mode 100644 index 0000000000..af864d3a36 --- /dev/null +++ b/airflow/contrib/sensors/aws_athena_sensor.py @@ -0,0 +1,79 @@ +# -*- 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 airflow.exceptions import AirflowException +from airflow.utils.decorators import apply_defaults +from airflow.contrib.hooks.aws_athena_hook import AWSAthenaHook +from airflow.sensors.base_sensor_operator import BaseSensorOperator + + +class AthenaSensor(BaseSensorOperator): + """ + Asks for the state of the Query until it reaches a failure state or success state. + If it fails, failing the task. + + :param query_execution_id: query_execution_id to check the state of + :type query_execution_id: str + :param max_retires: Number of times to poll for query state before + returning the current state, defaults to None + :type max_retires: int + :param aws_conn_id: aws connection to use, defaults to 'aws_default' + :type aws_conn_id: str + :param sleep_time: Time to wait between two consecutive call to + check query status on athena, defaults to 10 + :type sleep_time: int + """ + + INTERMEDIATE_STATES = ('QUEUED', 'RUNNING',) + FAILURE_STATES = ('FAILED', 'CANCELLED',) + SUCCESS_STATES = ('SUCCEEDED',) + + template_fields = ['query_execution_id'] + template_ext = () + ui_color = '#66c3ff' + + @apply_defaults + def __init__(self, + query_execution_id, + max_retires=None, + aws_conn_id='aws_default', + sleep_time=10, + *args, **kwargs): + super(BaseSensorOperator, self).__init__(*args, **kwargs) + self.aws_conn_id = aws_conn_id + self.query_execution_id = query_execution_id + self.hook = None + self.sleep_time = sleep_time + self.max_retires = max_retires + + def poke(self, context): + self.hook = self.get_hook() + self.hook.get_conn() + state = self.hook.poll_query_status(self.query_execution_id, self.max_retires) + + if state in self.FAILURE_STATES: + raise AirflowException('Athena sensor failed') + + if state in self.INTERMEDIATE_STATES: + return False + return True + + def get_hook(self): + return AWSAthenaHook(self.aws_conn_id, self.sleep_time) diff --git a/docs/code.rst b/docs/code.rst index 80ec76193f..145e1f2c1b 100644 --- a/docs/code.rst +++ b/docs/code.rst @@ -201,6 +201,7 @@ Operators Sensors ^^^^^^^ +.. autoclass:: airflow.contrib.sensors.aws_athena_sensor.AthenaSensor .. autoclass:: airflow.contrib.sensors.aws_redshift_cluster_sensor.AwsRedshiftClusterSensor .. autoclass:: airflow.contrib.sensors.bash_sensor.BashSensor .. autoclass:: airflow.contrib.sensors.bigquery_sensor.BigQueryTableSensor diff --git a/tests/contrib/sensors/test_athena_sensor.py b/tests/contrib/sensors/test_athena_sensor.py new file mode 100644 index 0000000000..6a8d713e3f --- /dev/null +++ b/tests/contrib/sensors/test_athena_sensor.py @@ -0,0 +1,71 @@ +# -*- 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. + +import unittest +from airflow import configuration, AirflowException +from airflow.contrib.sensors.aws_athena_sensor import AthenaSensor +from airflow.contrib.hooks.aws_athena_hook import AWSAthenaHook + +try: + from unittest import mock +except ImportError: + try: + import mock + except ImportError: + mock = None + + +class TestAthenaSensor(unittest.TestCase): + + def setUp(self): + configuration.load_test_config() + + self.sensor = AthenaSensor(task_id='test_athena_sensor', + query_execution_id='abc', + sleep_time=5, + max_retires=1, + aws_conn_id='aws_default') + + @mock.patch.object(AWSAthenaHook, 'poll_query_status', side_effect=("SUCCEEDED",)) + def test_poke_success(self, mock_poll_query_status): + self.assertTrue(self.sensor.poke(None)) + + @mock.patch.object(AWSAthenaHook, 'poll_query_status', side_effect=("RUNNING",)) + def test_poke_running(self, mock_poll_query_status): + self.assertFalse(self.sensor.poke(None)) + + @mock.patch.object(AWSAthenaHook, 'poll_query_status', side_effect=("QUEUED",)) + def test_poke_queued(self, mock_poll_query_status): + self.assertFalse(self.sensor.poke(None)) + + @mock.patch.object(AWSAthenaHook, 'poll_query_status', side_effect=("FAILED",)) + def test_poke_failed(self, mock_poll_query_status): + with self.assertRaises(AirflowException) as context: + self.sensor.poke(None) + self.assertIn('Athena sensor failed', str(context.exception)) + + @mock.patch.object(AWSAthenaHook, 'poll_query_status', side_effect=("CANCELLED",)) + def test_poke_cancelled(self, mock_poll_query_status): + with self.assertRaises(AirflowException) as context: + self.sensor.poke(None) + self.assertIn('Athena sensor failed', str(context.exception)) + + +if __name__ == '__main__': + unittest.main() ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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