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64 lines
2.3 KiB
64 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 airflow.providers.mongo.hooks.mongo import MongoHook |
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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 MongoSensor(BaseSensorOperator): |
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""" |
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Checks for the existence of a document which |
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matches the given query in MongoDB. Example: |
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>>> mongo_sensor = MongoSensor(collection="coll", |
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... query={"key": "value"}, |
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... mongo_conn_id="mongo_default", |
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... task_id="mongo_sensor") |
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:param collection: Target MongoDB collection. |
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:type collection: str |
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:param query: The query to find the target document. |
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:type query: dict |
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:param mongo_conn_id: The connection ID to use |
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when connecting to MongoDB. |
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:type mongo_conn_id: str |
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""" |
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template_fields = ("collection", "query") |
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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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collection: str, |
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query: dict, |
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mongo_conn_id: str = "mongo_default", |
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**kwargs |
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) -> None: |
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super().__init__(**kwargs) |
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self.mongo_conn_id = mongo_conn_id |
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self.collection = collection |
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self.query = query |
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def poke(self, context: dict) -> bool: |
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self.log.info( |
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"Sensor check existence of the document that matches the following query: %s", |
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self.query, |
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) |
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hook = MongoHook(self.mongo_conn_id) |
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return hook.find(self.collection, self.query, find_one=True) is not None
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