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async_batch.py
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async_batch.py
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# Copyright 2020 Google LLC All rights reserved.
#
# Licensed 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.
"""Helpers for batch requests to the Google Cloud Firestore API."""
from google.api_core import gapic_v1
from google.api_core import retry_async as retries
from google.cloud.firestore_v1.base_batch import BaseWriteBatch
from google.cloud.firestore_v1.types import WriteResult
from typing import Optional
class AsyncWriteBatch(BaseWriteBatch):
"""Accumulate write operations to be sent in a batch.
This has the same set of methods for write operations that
:class:`~google.cloud.firestore_v1.async_document.AsyncDocumentReference` does,
e.g. :meth:`~google.cloud.firestore_v1.async_document.AsyncDocumentReference.create`.
Args:
client (:class:`~google.cloud.firestore_v1.async_client.AsyncClient`):
The client that created this batch.
"""
def __init__(self, client) -> None:
super(AsyncWriteBatch, self).__init__(client=client)
async def commit(
self,
retry: retries.AsyncRetry = gapic_v1.method.DEFAULT,
timeout: Optional[float] = None,
) -> list[WriteResult]:
"""Commit the changes accumulated in this batch.
Args:
retry (google.api_core.retry.Retry): Designation of what errors, if any,
should be retried. Defaults to a system-specified policy.
timeout (float): The timeout for this request. Defaults to a
system-specified value.
Returns:
List[:class:`google.cloud.proto.firestore.v1.write.WriteResult`, ...]:
The write results corresponding to the changes committed, returned
in the same order as the changes were applied to this batch. A
write result contains an ``update_time`` field.
"""
request, kwargs = self._prep_commit(retry, timeout)
commit_response = await self._client._firestore_api.commit(
request=request,
metadata=self._client._rpc_metadata,
**kwargs,
)
self._write_pbs = []
self.write_results = results = list(commit_response.write_results)
self.commit_time = commit_response.commit_time
return results
async def __aenter__(self):
return self
async def __aexit__(self, exc_type, exc_value, traceback):
if exc_type is None:
await self.commit()