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113 lines
3.6 KiB
113 lines
3.6 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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# |
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from typing import Optional |
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from airflow.providers.microsoft.azure.hooks.wasb import WasbHook |
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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 WasbBlobSensor(BaseSensorOperator): |
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""" |
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Waits for a blob to arrive on Azure Blob Storage. |
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:param container_name: Name of the container. |
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:type container_name: str |
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:param blob_name: Name of the blob. |
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:type blob_name: str |
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:param wasb_conn_id: Reference to the wasb connection. |
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:type wasb_conn_id: str |
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:param check_options: Optional keyword arguments that |
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`WasbHook.check_for_blob()` takes. |
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:type check_options: dict |
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""" |
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template_fields = ("container_name", "blob_name") |
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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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container_name: str, |
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blob_name: str, |
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wasb_conn_id: str = "wasb_default", |
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check_options: Optional[dict] = None, |
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**kwargs, |
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) -> None: |
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super().__init__(**kwargs) |
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if check_options is None: |
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check_options = {} |
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self.wasb_conn_id = wasb_conn_id |
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self.container_name = container_name |
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self.blob_name = blob_name |
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self.check_options = check_options |
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def poke(self, context: dict): |
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self.log.info( |
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"Poking for blob: %s\nin wasb://%s", self.blob_name, self.container_name |
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) |
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hook = WasbHook(wasb_conn_id=self.wasb_conn_id) |
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return hook.check_for_blob( |
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self.container_name, self.blob_name, **self.check_options |
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) |
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class WasbPrefixSensor(BaseSensorOperator): |
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""" |
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Waits for blobs matching a prefix to arrive on Azure Blob Storage. |
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:param container_name: Name of the container. |
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:type container_name: str |
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:param prefix: Prefix of the blob. |
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:type prefix: str |
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:param wasb_conn_id: Reference to the wasb connection. |
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:type wasb_conn_id: str |
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:param check_options: Optional keyword arguments that |
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`WasbHook.check_for_prefix()` takes. |
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:type check_options: dict |
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""" |
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template_fields = ("container_name", "prefix") |
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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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container_name: str, |
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prefix: str, |
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wasb_conn_id: str = "wasb_default", |
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check_options: Optional[dict] = None, |
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**kwargs, |
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) -> None: |
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super().__init__(**kwargs) |
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if check_options is None: |
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check_options = {} |
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self.wasb_conn_id = wasb_conn_id |
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self.container_name = container_name |
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self.prefix = prefix |
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self.check_options = check_options |
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def poke(self, context: dict) -> bool: |
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self.log.info( |
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"Poking for prefix: %s in wasb://%s", self.prefix, self.container_name |
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) |
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hook = WasbHook(wasb_conn_id=self.wasb_conn_id) |
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return hook.check_for_prefix( |
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self.container_name, self.prefix, **self.check_options |
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)
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