wojsamjan commented on a change in pull request #18945: URL: https://github.com/apache/airflow/pull/18945#discussion_r728871371
########## File path: airflow/providers/google/cloud/hooks/dataproc_metastore.py ########## @@ -0,0 +1,673 @@ +# +# 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. +# +"""This module contains a Google Cloud Dataproc Metastore hook.""" + +from time import sleep +from typing import Dict, Optional, Sequence, Tuple, Union + +from google.api_core.operation import Operation +from google.api_core.retry import Retry, exponential_sleep_generator +from google.cloud.metastore_v1 import DataprocMetastoreClient +from google.cloud.metastore_v1.types import Backup, MetadataImport, Service +from google.cloud.metastore_v1.types.metastore import DatabaseDumpSpec, Restore +from google.protobuf.field_mask_pb2 import FieldMask + +from airflow.exceptions import AirflowException +from airflow.providers.google.common.hooks.base_google import GoogleBaseHook + + +class DataprocMetastoreHook(GoogleBaseHook): + """Hook for Google Cloud Dataproc Metastore APIs.""" + + def get_dataproc_metastore_client(self, region: Optional[str] = None) -> DataprocMetastoreClient: + """Returns DataprocMetastoreClient.""" + client_options = None + if region and region != 'global': + client_options = {'api_endpoint': f'{region}-metastore.googleapis.com:443'} + + return DataprocMetastoreClient( + credentials=self._get_credentials(), client_info=self.client_info, client_options=client_options + ) + + def wait_for_operation(self, operation: Operation): + """Waits for long-lasting operation to complete.""" + for time_to_wait in exponential_sleep_generator(initial=10, maximum=120): + sleep(time_to_wait) + if operation.done(): + break + + error = operation.exception() + if error: + raise AirflowException(error) + return operation.result() + + def create_backup( + self, + project_id: str, + region: str, + service_id: str, + backup: Backup, + backup_id: str, + request_id: Optional[str] = None, + retry: Optional[Retry] = None, + timeout: Optional[float] = None, + metadata: Optional[Sequence[Tuple[str, str]]] = None, + ): + """ + Creates a new backup in a given project and location. + + :param project_id: Required. The ID of the Google Cloud project that the service belongs to. + :type project_id: str + :param region: Required. The ID of the Google Cloud region that the service belongs to. + :type region: str + :param service_id: Required. The ID of the metastore service, which is used as the final component of + the metastore service's name. This value must be between 2 and 63 characters long inclusive, begin + with a letter, end with a letter or number, and consist of alpha-numeric ASCII characters or + hyphens. + + This corresponds to the ``service_id`` field on the ``request`` instance; if ``request`` is + provided, this should not be set. + :type service_id: str + :param backup: Required. The backup to create. The ``name`` field is ignored. The ID of the created + backup must be provided in the request's ``backup_id`` field. + + This corresponds to the ``backup`` field on the ``request`` instance; if ``request`` is provided, + this should not be set. + :type backup: google.cloud.metastore_v1.types.Backup + :param backup_id: Required. The ID of the backup, which is used as the final component of the + backup's name. This value must be between 1 and 64 characters long, begin with a letter, end with + a letter or number, and consist of alpha-numeric ASCII characters or hyphens. + + This corresponds to the ``backup_id`` field on the ``request`` instance; if ``request`` is + provided, this should not be set. + :type backup_id: str + :param request_id: Optional. A unique id used to identify the request. + :type request_id: str + :param retry: Designation of what errors, if any, should be retried. + :type retry: google.api_core.retry.Retry + :param timeout: The timeout for this request. + :type timeout: float + :param metadata: Strings which should be sent along with the request as metadata. + :type metadata: Sequence[Tuple[str, str]] + """ + parent = f'projects/{project_id}/locations/{region}/services/{service_id}' + + client = self.get_dataproc_metastore_client(region=region) + result = client.create_backup( + request={ + 'parent': parent, + 'backup': backup, + 'backup_id': backup_id, + 'request_id': request_id, + }, + retry=retry, + timeout=timeout, + metadata=metadata, + ) + return result + + def create_metadata_import( Review comment: Should I decorate another Hook´s methods for services and backup as well? -- This is an automated message from the Apache Git Service. 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