airflow cosmos 源码
airflow cosmos 代码
文件路径：/airflow/providers/microsoft/azure/sensors/cosmos.py
#
# 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 __future__ import annotations
from typing import TYPE_CHECKING, Sequence
from airflow.providers.microsoft.azure.hooks.cosmos import AzureCosmosDBHook
from airflow.sensors.base import BaseSensorOperator
if TYPE_CHECKING:
from airflow.utils.context import Context
class AzureCosmosDocumentSensor(BaseSensorOperator):
"""
Checks for the existence of a document which
matches the given query in CosmosDB. Example:
.. code-block::
azure_cosmos_sensor = AzureCosmosDocumentSensor(
database_name="somedatabase_name",
collection_name="somecollection_name",
document_id="unique-doc-id",
azure_cosmos_conn_id="azure_cosmos_default",
task_id="azure_cosmos_sensor",
)
:param database_name: Target CosmosDB database_name.
:param collection_name: Target CosmosDB collection_name.
:param document_id: The ID of the target document.
:param azure_cosmos_conn_id: Reference to the
:ref:`Azure CosmosDB connection<howto/connection:azure_cosmos>`.
"""
template_fields: Sequence[str] = ('database_name', 'collection_name', 'document_id')
def __init__(
self,
*,
database_name: str,
collection_name: str,
document_id: str,
azure_cosmos_conn_id: str = "azure_cosmos_default",
**kwargs,
) -> None:
super().__init__(**kwargs)
self.azure_cosmos_conn_id = azure_cosmos_conn_id
self.database_name = database_name
self.collection_name = collection_name
self.document_id = document_id
def poke(self, context: Context) -> bool:
self.log.info("*** Entering poke")
hook = AzureCosmosDBHook(self.azure_cosmos_conn_id)
return hook.get_document(self.document_id, self.database_name, self.collection_name) is not None
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