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feat(ZonalBuckets): add support for generation=0 to avoid overwriting existing objects and add is_stream_open support #1709
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…bjectWriter for stream status check
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This pull request introduces a new public property is_stream_open to the AsyncAppendableObjectWriter class. This change improves the class's public API by providing a clear way to check if the underlying stream is open. The tests have been updated accordingly to use this new property, which is good practice. My review includes one suggestion to improve consistency in the test suite.
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is_stream_open property to AsyncAppendableObjectWriter for stream status checkis_stream_open support
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is_stream_open support generation=0 to avoid overwriting existing objects and add is_stream_open support
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
…iter and _AsyncWriteObjectStream - Updated documentation to clarify behavior when using generation=0 and None. - Added tests to verify correct handling of object creation and overwriting based on generation settings.
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PR created by the Librarian CLI to initialize a release. Merging this PR will auto trigger a release. Librarian Version: v1.0.2-0.20251119154421-36c3e21ad3ac Language Image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:8e2c32496077054105bd06c54a59d6a6694287bc053588e24debe6da6920ad91 <details><summary>google-cloud-storage: 3.9.0</summary> ## [3.9.0](v3.8.0...v3.9.0) (2026-02-02) ### Features * update generation for MRD (#1730) ([08bc708](08bc7082)) * add get_object method for async grpc client (#1735) ([0e5ec29](0e5ec29b)) * Add micro-benchmarks for reads comparing standard (regional) vs rapid (zonal) buckets. (#1697) ([1917649](1917649f)) * Add support for opening via `write_handle` and fix `write_handle` type (#1715) ([2bc15fa](2bc15fa5)) * add samples for appendable objects writes and reads ([2e1a1eb](2e1a1eb5)) * add samples for appendable objects writes and reads (#1705) ([2e1a1eb](2e1a1eb5)) * add context manager to mrd (#1724) ([5ac2808](5ac2808a)) * Move Zonal Buckets features of `_experimental` (#1728) ([74c9ecc](74c9ecc5)) * add default user agent for grpc (#1726) ([7b31946](7b319469)) * expose finalized_time in blob.py applicable for GET_OBJECT in ZB (#1719) ([8e21a7f](8e21a7fe)) * expose `DELETE_OBJECT` in `AsyncGrpcClient` (#1718) ([c8dd7a0](c8dd7a0b)) * send `user_agent` to grpc channel (#1712) ([cdb2486](cdb2486b)) * integrate writes strategy and appendable object writer (#1695) ([dbd162b](dbd162b3)) * Add micro-benchmarks for writes comparing standard (regional) vs rapid (zonal) buckets. (#1707) ([dbe9d8b](dbe9d8b8)) * add support for `generation=0` to avoid overwriting existing objects and add `is_stream_open` support (#1709) ([ea0f5bf](ea0f5bf8)) * add support for `generation=0` to prevent overwriting existing objects ([ea0f5bf](ea0f5bf8)) * add `is_stream_open` property to AsyncAppendableObjectWriter for stream status check ([ea0f5bf](ea0f5bf8)) ### Bug Fixes * receive eof while closing reads stream (#1733) ([2ef6339](2ef63396)) * update write handle on every recv() (#1716) ([5d9fafe](5d9fafe1)) * implement requests_done method to signal end of requests in async streams. Gracefully close streams. (#1700) ([6c16079](6c160794)) * implement requests_done method to signal end of requests in async streams. Gracefully close streams. ([6c16079](6c160794)) * instance grpc client once per process in benchmarks (#1725) ([721ea2d](721ea2dd)) * Fix formatting in setup.py dependencies list (#1713) ([cc4831d](cc4831d7)) * Change contructors of MRD and AAOW AsyncGrpcClient.grpc_client to AsyncGrpcClient (#1727) ([e730bf5](e730bf50)) </details>
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feat(ZonalBuckets): add support for
generation=0to prevent overwriting existing objectsfeat(ZonalBuckets): add
is_stream_openproperty to AsyncAppendableObjectWriter for stream status check