feat(storage): sync async with main branch

.gitignore

@@ -62,3 +62,6 @@ system_tests/local_test_setup
 # Make sure a generated file isn't accidentally committed.
 pylintrc
 pylintrc.test
+
+# Benchmarking results and logs
+__benchmark_results__/**

.kokoro/trampoline_v2.sh

@@ -26,8 +26,8 @@
 # To run this script, first download few files from gcs to /dev/shm.
 # (/dev/shm is passed into the container as KOKORO_GFILE_DIR).
 #
-# gsutil cp gs://cloud-devrel-kokoro-resources/python-docs-samples/secrets_viewer_service_account.json /dev/shm
-# gsutil cp gs://cloud-devrel-kokoro-resources/python-docs-samples/automl_secrets.txt /dev/shm
+# gcloud storage cp gs://cloud-devrel-kokoro-resources/python-docs-samples/secrets_viewer_service_account.json /dev/shm
+# gcloud storage cp gs://cloud-devrel-kokoro-resources/python-docs-samples/automl_secrets.txt /dev/shm
 #
 # Then run the script.
 # .kokoro/trampoline_v2.sh

.librarian/state.yaml

@@ -1,7 +1,7 @@
 image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:8e2c32496077054105bd06c54a59d6a6694287bc053588e24debe6da6920ad91
 libraries:
   - id: google-cloud-storage
-    version: 3.6.0
+    version: 3.9.0
     last_generated_commit: 5400ccce473c439885bd6bf2924fd242271bfcab
     apis:
       - path: google/storage/v2

CHANGELOG.md

@@ -4,6 +4,60 @@
 
 [1]: https://pypi.org/project/google-cloud-storage/#history
 
+## [3.9.0](https://github.com/googleapis/python-storage/compare/v3.8.0...v3.9.0) (2026-02-02)
+
+
+### Features
+
+* add get_object method for async grpc client (#1735) ([0e5ec29bc6a31b77bcfba4254cef5bffb199095c](https://github.com/googleapis/python-storage/commit/0e5ec29bc6a31b77bcfba4254cef5bffb199095c))
+* expose `DELETE_OBJECT`   in `AsyncGrpcClient` (#1718) ([c8dd7a0b124c395b7b60189ee78f47aba8d51f7d](https://github.com/googleapis/python-storage/commit/c8dd7a0b124c395b7b60189ee78f47aba8d51f7d))
+* update generation for MRD (#1730) ([08bc7082db7392f13bc8c51511b4afa9c7b157c9](https://github.com/googleapis/python-storage/commit/08bc7082db7392f13bc8c51511b4afa9c7b157c9))
+* Move Zonal Buckets features of `_experimental` (#1728) ([74c9ecc54173420bfcd48498a8956088a035af50](https://github.com/googleapis/python-storage/commit/74c9ecc54173420bfcd48498a8956088a035af50))
+* add default user agent for grpc (#1726) ([7b319469d2e495ea0bf7367f3949190e8f5d9fff](https://github.com/googleapis/python-storage/commit/7b319469d2e495ea0bf7367f3949190e8f5d9fff))
+* expose finalized_time in blob.py applicable for GET_OBJECT in ZB (#1719) ([8e21a7fe54d0a043f31937671003630a1985a5d2](https://github.com/googleapis/python-storage/commit/8e21a7fe54d0a043f31937671003630a1985a5d2))
+* add context manager to mrd (#1724) ([5ac2808a69195c688ed42c3604d4bfadbb602a66](https://github.com/googleapis/python-storage/commit/5ac2808a69195c688ed42c3604d4bfadbb602a66))
+* integrate writes strategy and appendable object writer (#1695) ([dbd162b3583e32e6f705a51f5c3fef333a9b89d0](https://github.com/googleapis/python-storage/commit/dbd162b3583e32e6f705a51f5c3fef333a9b89d0))
+* Add support for opening via `write_handle` and fix `write_handle` type (#1715) ([2bc15fa570683ba584230c51b439d189dbdcd580](https://github.com/googleapis/python-storage/commit/2bc15fa570683ba584230c51b439d189dbdcd580))
+* Add micro-benchmarks for writes comparing standard (regional) vs rapid (zonal) buckets. (#1707) ([dbe9d8b89d975dfbed8c830a5687ccfafea51d5f](https://github.com/googleapis/python-storage/commit/dbe9d8b89d975dfbed8c830a5687ccfafea51d5f))
+* Add micro-benchmarks for reads comparing standard (regional) vs rapid (zonal) buckets. (#1697) ([1917649fac41481da1adea6c2a9f4ab1298a34c4](https://github.com/googleapis/python-storage/commit/1917649fac41481da1adea6c2a9f4ab1298a34c4))
+* send `user_agent` to grpc channel (#1712) ([cdb2486bb051dcbfbffc2510aff6aacede5e54d3](https://github.com/googleapis/python-storage/commit/cdb2486bb051dcbfbffc2510aff6aacede5e54d3))
+* add samples for appendable objects writes and reads (#1705) ([2e1a1eb5cbe1c909f1f892a0cc74fe63c8ef36ff](https://github.com/googleapis/python-storage/commit/2e1a1eb5cbe1c909f1f892a0cc74fe63c8ef36ff))
+* add samples for appendable objects writes and reads ([2e1a1eb5cbe1c909f1f892a0cc74fe63c8ef36ff](https://github.com/googleapis/python-storage/commit/2e1a1eb5cbe1c909f1f892a0cc74fe63c8ef36ff))
+* add support for `generation=0` to avoid overwriting existing objects and add `is_stream_open` support  (#1709) ([ea0f5bf8316f4bfcff2728d9d1baa68dde6ebdae](https://github.com/googleapis/python-storage/commit/ea0f5bf8316f4bfcff2728d9d1baa68dde6ebdae))
+* add support for `generation=0` to prevent overwriting existing objects ([ea0f5bf8316f4bfcff2728d9d1baa68dde6ebdae](https://github.com/googleapis/python-storage/commit/ea0f5bf8316f4bfcff2728d9d1baa68dde6ebdae))
+* add `is_stream_open` property to AsyncAppendableObjectWriter for stream status check ([ea0f5bf8316f4bfcff2728d9d1baa68dde6ebdae](https://github.com/googleapis/python-storage/commit/ea0f5bf8316f4bfcff2728d9d1baa68dde6ebdae))
+
+
+### Bug Fixes
+
+* receive eof while closing reads stream (#1733) ([2ef63396dca1c36f9b0f0f3cf87a61b5aa4bd465](https://github.com/googleapis/python-storage/commit/2ef63396dca1c36f9b0f0f3cf87a61b5aa4bd465))
+* Change contructors of MRD and AAOW AsyncGrpcClient.grpc_client to AsyncGrpcClient (#1727) ([e730bf50c4584f737ab86b2e409ddb27b40d2cec](https://github.com/googleapis/python-storage/commit/e730bf50c4584f737ab86b2e409ddb27b40d2cec))
+* instance grpc client once per process in benchmarks (#1725) ([721ea2dd6c6db2aa91fd3b90e56a831aaaa64061](https://github.com/googleapis/python-storage/commit/721ea2dd6c6db2aa91fd3b90e56a831aaaa64061))
+* update write handle on every recv() (#1716) ([5d9fafe1466b5ccb1db4a814967a5cc8465148a2](https://github.com/googleapis/python-storage/commit/5d9fafe1466b5ccb1db4a814967a5cc8465148a2))
+* Fix formatting in setup.py dependencies list (#1713) ([cc4831d7e253b265b0b96e08b5479f4c759be442](https://github.com/googleapis/python-storage/commit/cc4831d7e253b265b0b96e08b5479f4c759be442))
+* implement requests_done method to signal end of requests in async streams. Gracefully close streams. (#1700) ([6c160794afded5e8f4179399f1fe5248e32bf707](https://github.com/googleapis/python-storage/commit/6c160794afded5e8f4179399f1fe5248e32bf707))
+* implement requests_done method to signal end of requests in async streams. Gracefully close streams. ([6c160794afded5e8f4179399f1fe5248e32bf707](https://github.com/googleapis/python-storage/commit/6c160794afded5e8f4179399f1fe5248e32bf707))
+
+## [3.8.0](https://github.com/googleapis/python-storage/compare/v3.7.0...v3.8.0) (2026-01-13)
+
+
+### Features
+
+* flush the last chunk in append method (#1699) ([89bfe7a5fcd0391da35e9ceccc185279782b5420](https://github.com/googleapis/python-storage/commit/89bfe7a5fcd0391da35e9ceccc185279782b5420))
+* add write resumption strategy (#1663) ([a57ea0ec786a84c7ae9ed82c6ae5d38ecadba4af](https://github.com/googleapis/python-storage/commit/a57ea0ec786a84c7ae9ed82c6ae5d38ecadba4af))
+* add bidi stream retry manager. (#1632) ([d90f0ee09902a21b186106bcf0a8cb0b81b34340](https://github.com/googleapis/python-storage/commit/d90f0ee09902a21b186106bcf0a8cb0b81b34340))
+* implement "append_from_file" (#1686) ([1333c956da18b4db753cda98c41c3619c84caf69](https://github.com/googleapis/python-storage/commit/1333c956da18b4db753cda98c41c3619c84caf69))
+* make flush size configurable (#1677) ([f7095faf0a81239894ff9d277849788b62eb6ac5](https://github.com/googleapis/python-storage/commit/f7095faf0a81239894ff9d277849788b62eb6ac5))
+* compute chunk wise checksum for bidi_writes (#1675) ([139390cb01f93a2d61e7ec201e3637dffe0b2a34](https://github.com/googleapis/python-storage/commit/139390cb01f93a2d61e7ec201e3637dffe0b2a34))
+* expose persisted size in mrd (#1671) ([0e2961bef285fc064174a5c18e3db05c7a682521](https://github.com/googleapis/python-storage/commit/0e2961bef285fc064174a5c18e3db05c7a682521))
+
+
+### Bug Fixes
+
+* add system test for opening with read_handle (#1672) ([6dc711dacd4d38c573aa4ca9ad71fe412c0e49c1](https://github.com/googleapis/python-storage/commit/6dc711dacd4d38c573aa4ca9ad71fe412c0e49c1))
+* no state lookup while opening bidi-write stream (#1636) ([2d5a7b16846a69f3a911844971241899f60cce14](https://github.com/googleapis/python-storage/commit/2d5a7b16846a69f3a911844971241899f60cce14))
+* close write object stream always (#1661) ([4a609a4b3f4ba1396825911cb02f8a9649135cd5](https://github.com/googleapis/python-storage/commit/4a609a4b3f4ba1396825911cb02f8a9649135cd5))
+
 ## [3.7.0](https://github.com/googleapis/python-storage/compare/v3.6.0...v3.7.0) (2025-12-09)
 
 

cloudbuild/run_zonal_tests.sh

@@ -6,6 +6,7 @@ sudo apt-get update && sudo apt-get install -y git python3-pip python3-venv
 # Clone the repository and checkout the specific commit from the build trigger.
 git clone https://github.com/googleapis/python-storage.git
 cd python-storage
+git fetch origin "refs/pull/${_PR_NUMBER}/head"
 git checkout ${COMMIT_SHA}
 
 
@@ -22,5 +23,7 @@ pip install -e .
 echo '--- Setting up environment variables on VM ---'
 export ZONAL_BUCKET=${_ZONAL_BUCKET}
 export RUN_ZONAL_SYSTEM_TESTS=True
-echo '--- Running Zonal tests on VM ---'
+CURRENT_ULIMIT=$(ulimit -n)
+echo '--- Running Zonal tests on VM with ulimit set to ---' $CURRENT_ULIMIT
 pytest -vv -s --log-format='%(asctime)s %(levelname)s %(message)s' --log-date-format='%H:%M:%S' tests/system/test_zonal.py
+pytest -vv -s --log-format='%(asctime)s %(levelname)s %(message)s' --log-date-format='%H:%M:%S' samples/snippets/zonal_buckets/zonal_snippets_test.py

cloudbuild/zb-system-tests-cloudbuild.yaml

@@ -3,6 +3,7 @@ substitutions:
   _ZONE: "us-central1-a"
   _SHORT_BUILD_ID: ${BUILD_ID:0:8}
   _VM_NAME: "py-sdk-sys-test-${_SHORT_BUILD_ID}"
+  _ULIMIT: "10000" # 10k, for gRPC bidi streams
 
 
 
@@ -67,7 +68,7 @@ steps:
         # Execute the script on the VM via SSH.
         # Capture the exit code to ensure cleanup happens before the build fails.
         set +e
-        gcloud compute ssh ${_VM_NAME} --zone=${_ZONE} --internal-ip --ssh-key-file=/workspace/.ssh/google_compute_engine --command="COMMIT_SHA=${COMMIT_SHA} _ZONAL_BUCKET=${_ZONAL_BUCKET} bash run_zonal_tests.sh"
+        gcloud compute ssh ${_VM_NAME} --zone=${_ZONE} --internal-ip --ssh-key-file=/workspace/.ssh/google_compute_engine --command="ulimit -n {_ULIMIT}; COMMIT_SHA=${COMMIT_SHA} _ZONAL_BUCKET=${_ZONAL_BUCKET} _PR_NUMBER=${_PR_NUMBER} bash run_zonal_tests.sh"
         EXIT_CODE=$?
         set -e
 

google/cloud/_storage_v2/gapic_version.py

@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "3.6.0"  # {x-release-please-version}
+__version__ = "3.9.0"  # {x-release-please-version}

google/cloud/storage/_experimental/asyncio/_utils.py

@@ -0,0 +1,11 @@
+import warnings
+
+# Import everything from the new stable module
+from google.cloud.storage.asyncio._utils import *  # noqa
+
+warnings.warn(
+    "google.cloud.storage._experimental.asyncio._utils has been moved to google.cloud.storage.asyncio._utils. "
+    "Please update your imports.",
+    DeprecationWarning,
+    stacklevel=2,
+)

google/cloud/storage/_experimental/asyncio/async_abstract_object_stream.py

@@ -1,67 +1,11 @@
-# Copyright 2025 Google LLC
-#
-# 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.
+import warnings
 
-import abc
-from typing import Any, Optional
+# Import everything from the new stable module
+from google.cloud.storage.asyncio.async_abstract_object_stream import *  # noqa
 
-
-class _AsyncAbstractObjectStream(abc.ABC):
-    """Abstract base class to represent gRPC bidi-stream for GCS ``Object``.
-
-    Concrete implementation of this class could be ``_AsyncReadObjectStream``
-    or ``_AsyncWriteObjectStream``.
-
-    :type bucket_name: str
-    :param bucket_name: (Optional) The name of the bucket containing the object.
-
-    :type object_name: str
-    :param object_name: (Optional) The name of the object.
-
-    :type generation_number: int
-    :param generation_number: (Optional) If present, selects a specific revision of
-                              this object.
-
-    :type handle: bytes
-    :param handle: (Optional) The handle for the object, could be read_handle or
-                   write_handle, based on how the stream is used.
-    """
-
-    def __init__(
-        self,
-        bucket_name: str,
-        object_name: str,
-        generation_number: Optional[int] = None,
-        handle: Optional[bytes] = None,
-    ) -> None:
-        super().__init__()
-        self.bucket_name: str = bucket_name
-        self.object_name: str = object_name
-        self.generation_number: Optional[int] = generation_number
-        self.handle: Optional[bytes] = handle
-
-    @abc.abstractmethod
-    async def open(self) -> None:
-        pass
-
-    @abc.abstractmethod
-    async def close(self) -> None:
-        pass
-
-    @abc.abstractmethod
-    async def send(self, protobuf: Any) -> None:
-        pass
-
-    @abc.abstractmethod
-    async def recv(self) -> Any:
-        pass
+warnings.warn(
+    "google.cloud.storage._experimental.asyncio.async_abstract_object_stream has been moved to google.cloud.storage.asyncio.async_abstract_object_stream. "
+    "Please update your imports.",
+    DeprecationWarning,
+    stacklevel=2,
+)