chore: librarian release pull request: 20260318T145147Z

[chandra-siri]

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

google-cloud-storage: 3.10.0

3.10.0 (2026-03-18)

Features

• [Bucket Encryption Enforcement] add support for bucket encryption enforcement config (feat: add support for bucket encryption enforcement config #1742) (2a6e8b00e4e6ff57460373f8e628fd363be47811)

Perf Improvments

• [Rapid Buckets Reads] Use raw proto access for read resumption strategy (feat(storage): Use raw proto access for read resumption strategy #1764) (14cfd61ce35365a409650981239ef742cdf375fb)
• [Rapid Buckets Benchmarks] init mp pool & grpc client once, use os.sched_setaffinity (fix: init mp pool & grpc client once, use os.sched_setaffinity #1751) (a9eb82c1b9b3c6ae5717d47b76284ed0deb5f769)
• [Rapid Buckets Writes] don't flush at every append, results in bad perf (fix: don't flush at every append, results in bad perf #1746) (ab62d728ac7d7be3c4fe9a99d72e35ead310805a)

Bug Fixes

• [Windows] skip downloading blobs whose name contain ":" eg: C: D: etc when application runs in Windows. (fix(storage): skip downloading blobs whose name contain ":" eg: C: D: etc when application runs in Windows. #1774) (558198823ed51918db9c0137715d1e7f5b593975)
• [Path Traversal] Prevent path traversal in download_many_to_path (fix(transfer_manager): Prevent path traversal in download_many_to_path #1768) (700fec3bf7aa37bd5ea4b163cc3f9e8e6892bd5a)
• [Rapid Buckets] pass token correctly, '&' instead of ',' (fix: pass token correctly, '&' instead of ',' #1756) (d8dd1e074d2431de9b45e0103181dce749a447a0)

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request initiates the release process for version 4.0.0 of the google-cloud-storage library. It incorporates a range of new features and critical bug fixes, enhancing functionality, security, and performance for users. Merging this PR will automatically trigger the official release.

Highlights

• Version Update: The google-cloud-storage library has been updated to version 4.0.0.
• New Features: Introduced time-based benchmarks, raw proto access for read resumption, support for bucket encryption enforcement, triggered bidi conformance tests, and added UserWarning for skipped items in download_many_to_path.
• Bug Fixes: Addressed issues including skipping blob downloads on Windows for specific names, preventing path traversal vulnerabilities in download_many_to_path, optimizing multiprocessing pool and gRPC client initialization, improving append performance by reducing flushes, and correcting token passing.

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[gemini-code-assist]

Code Review

This pull request updates the google-cloud-storage library to version 4.0.0 across various configuration and source files, including .librarian/state.yaml, gapic_version.py, version.py, and snippet_metadata_google.storage.v2.json. The CHANGELOG.md is also updated to document the new version, highlighting features such as support for UserWarning in download_many_to_path, raw proto access for read resumption, and bucket encryption enforcement configuration. Key bug fixes include preventing path traversal in download_many_to_path, improving token passing, optimizing multiprocessing and gRPC client initialization, and addressing performance issues related to frequent flushing.