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69 lines
2.7 KiB
69 lines
2.7 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.exceptions import AirflowException |
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from airflow.providers.amazon.aws.hooks.glue_crawler import AwsGlueCrawlerHook |
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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 AwsGlueCrawlerSensor(BaseSensorOperator): |
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""" |
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Waits for an AWS Glue crawler to reach any of the statuses below |
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'FAILED', 'CANCELLED', 'SUCCEEDED' |
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:param crawler_name: The AWS Glue crawler unique name |
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:type crawler_name: str |
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:param aws_conn_id: aws connection to use, defaults to 'aws_default' |
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:type aws_conn_id: str |
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""" |
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@apply_defaults |
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def __init__( |
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self, *, crawler_name: str, aws_conn_id: str = "aws_default", **kwargs |
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) -> None: |
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super().__init__(**kwargs) |
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self.crawler_name = crawler_name |
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self.aws_conn_id = aws_conn_id |
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self.success_statuses = "SUCCEEDED" |
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self.errored_statuses = ("FAILED", "CANCELLED") |
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self.hook: Optional[AwsGlueCrawlerHook] = None |
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def poke(self, context): |
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hook = self.get_hook() |
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self.log.info("Poking for AWS Glue crawler: %s", self.crawler_name) |
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crawler_state = hook.get_crawler(self.crawler_name)["State"] |
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if crawler_state == "READY": |
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self.log.info("State: %s", crawler_state) |
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crawler_status = hook.get_crawler(self.crawler_name)["LastCrawl"]["Status"] |
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if crawler_status == self.success_statuses: |
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self.log.info("Status: %s", crawler_status) |
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return True |
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else: |
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raise AirflowException(f"Status: {crawler_status}") |
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else: |
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return False |
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def get_hook(self) -> AwsGlueCrawlerHook: |
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"""Returns a new or pre-existing AwsGlueCrawlerHook""" |
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if self.hook: |
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return self.hook |
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self.hook = AwsGlueCrawlerHook(aws_conn_id=self.aws_conn_id) |
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return self.hook
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