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69 lines
2.3 KiB
69 lines
2.3 KiB
# |
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# Licensed to the Apache Software Foundation (ASF) under one |
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# or more contributor license agreements. See the NOTICE file |
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# distributed with this work for additional information |
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# regarding copyright ownership. The ASF licenses this file |
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# to you under the Apache License, Version 2.0 (the |
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# "License"); you may not use this file except in compliance |
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# with the License. You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, |
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# software distributed under the License is distributed on an |
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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# KIND, either express or implied. See the License for the |
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# specific language governing permissions and limitations |
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# under the License. |
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from typing import Optional |
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from airflow.providers.amazon.aws.hooks.redshift import RedshiftHook |
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from airflow.sensors.base import BaseSensorOperator |
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from airflow.utils.decorators import apply_defaults |
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class AwsRedshiftClusterSensor(BaseSensorOperator): |
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""" |
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Waits for a Redshift cluster to reach a specific status. |
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:param cluster_identifier: The identifier for the cluster being pinged. |
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:type cluster_identifier: str |
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:param target_status: The cluster status desired. |
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:type target_status: str |
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""" |
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template_fields = ("cluster_identifier", "target_status") |
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@apply_defaults |
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def __init__( |
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self, |
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*, |
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cluster_identifier: str, |
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target_status: str = "available", |
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aws_conn_id: str = "aws_default", |
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**kwargs, |
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): |
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super().__init__(**kwargs) |
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self.cluster_identifier = cluster_identifier |
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self.target_status = target_status |
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self.aws_conn_id = aws_conn_id |
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self.hook: Optional[RedshiftHook] = None |
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def poke(self, context): |
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self.log.info( |
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"Poking for status : %s\nfor cluster %s", |
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self.target_status, |
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self.cluster_identifier, |
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) |
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return ( |
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self.get_hook().cluster_status(self.cluster_identifier) |
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== self.target_status |
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) |
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def get_hook(self) -> RedshiftHook: |
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"""Create and return a RedshiftHook""" |
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if self.hook: |
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return self.hook |
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self.hook = RedshiftHook(aws_conn_id=self.aws_conn_id) |
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return self.hook
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