chore: librarian release pull request: 20251210T220651Z

[rahul2393]

PR created by the Librarian CLI to initialize a release. Merging this PR will auto trigger a release.

Librarian Version: v1.0.0
Language Image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:8e2c32496077054105bd06c54a59d6a6694287bc053588e24debe6da6920ad91

google-cloud-spanner: 3.60.0

3.60.0 (2025-12-10)

Features

• make built-in metrics enabled by default (feat(spanner): make built-in metrics enabled by default #1459) (64aebe7e)

• Exposing AutoscalingConfig in InstancePartition (8b6f1540)

• add support for experimental host (feat: add support for experimental host #1452) (9535e5e0)

• enable OpenTelemetry metrics and tracing by default (feat(observability): enable OpenTelemetry metrics and tracing by default #1410) (bb5095df)

• add cloud.region, request_tag and transaction_tag in span attributes (feat: add cloud.region, request_tag and transaction_tag in span attributes #1449) (d37fb80a)

• Add QueryAdvisorResult for query plan (PiperOrigin-RevId: 832425466) (e08260fe)

• Add Send and Ack mutations for Queues (PiperOrigin-RevId: 832425466) (e08260fe)

• Add Spanner location API (feat: Add Spanner location API #1457) (PiperOrigin-RevId: 833474957) (e08260fe)

Bug Fixes

• Deprecate credentials_file argument (8b6f1540)

• configure keepAlive time for gRPC TCP connections (fix: configure keepAlive time for gRPC TCP connections #1448) (efb2833e)

• Provide Spanner Option to disable metrics (fix: Provide Spanner Option to disable metrics #1460) (f1ebc43b)

Documentation

• Update description for the BatchCreateSessionsRequest and Session (PiperOrigin-RevId: 832425466) (e08260fe)

• Update description for the IsolationLevel (PiperOrigin-RevId: 832425466) (e08260fe)

[gemini-code-assist]

Summary of Changes

Hello @rahul2393, 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 is an automated release generated by the Librarian CLI, updating the google-cloud-spanner library to version 3.60.0. The update brings a suite of new functionalities, critical bug fixes, and enhanced documentation, aiming to improve the library's performance, observability, and overall user experience. Merging this PR will trigger the official release process.

Highlights

• Version Update: The google-cloud-spanner library has been updated to version 3.60.0.
• New Features: Several new features have been introduced, including built-in metrics enabled by default, OpenTelemetry metrics and tracing, support for experimental hosts, Spanner location API, QueryAdvisorResult for query plans, and Send/Ack mutations for Queues. Additionally, AutoscalingConfig is now exposed in InstancePartition and cloud.region, request_tag, and transaction_tag are added to span attributes.
• Bug Fixes: Key bug fixes include deprecating the credentials_file argument, configuring keepAlive time for gRPC TCP connections, and providing an option to disable Spanner metrics.
• Documentation Improvements: Documentation has been updated for BatchCreateSessionsRequest, Session, and IsolationLevel.

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[gemini-code-assist]

Code Review

This pull request is an automated release for google-cloud-spanner, bumping the version to 3.60.0. The changes look correct and are consistent with a release PR. I've only found a minor formatting issue in the CHANGELOG.md file, where there are some extra blank lines. I've added a comment with a suggestion to fix it. Otherwise, everything looks good to go.

[gemini-code-assist]

There are some extra blank lines in the new changelog entry. For consistent formatting, it's best to have only one blank line between sections and after headers. I've provided a suggestion to clean this up.

## [3.60.0](https://github.com/googleapis/python-spanner/compare/v3.59.0...v3.60.0) (2025-12-10)

### Documentation

* Update description for the BatchCreateSessionsRequest and Session ([e08260fe24b62313d7964572eeb963eb8c3c923f](https://github.com/googleapis/python-spanner/commit/e08260fe24b62313d7964572eeb963eb8c3c923f))
* Update description for the IsolationLevel ([e08260fe24b62313d7964572eeb963eb8c3c923f](https://github.com/googleapis/python-spanner/commit/e08260fe24b62313d7964572eeb963eb8c3c923f))

### Features

* make built-in metrics enabled by default (#1459) ([64aebe7e3ecfec756435f7d102b36f5a41f7cc52](https://github.com/googleapis/python-spanner/commit/64aebe7e3ecfec756435f7d102b36f5a41f7cc52))
* Add Spanner location API (#1457) ([e08260fe24b62313d7964572eeb963eb8c3c923f](https://github.com/googleapis/python-spanner/commit/e08260fe24b62313d7964572eeb963eb8c3c923f))
* Add Send and Ack mutations for Queues ([e08260fe24b62313d7964572eeb963eb8c3c923f](https://github.com/googleapis/python-spanner/commit/e08260fe24b62313d7964572eeb963eb8c3c923f))
* Add QueryAdvisorResult for query plan ([e08260fe24b62313d7964572eeb963eb8c3c923f](https://github.com/googleapis/python-spanner/commit/e08260fe24b62313d7964572eeb963eb8c3c923f))
* add cloud.region, request_tag and transaction_tag in span attributes (#1449) ([d37fb80a39aea859059ae7d85adc75095a6e14e6](https://github.com/googleapis/python-spanner/commit/d37fb80a39aea859059ae7d85adc75095a6e14e6))
* Exposing AutoscalingConfig in InstancePartition ([8b6f154085543953556acde161a739414988b7f0](https://github.com/googleapis/python-spanner/commit/8b6f154085543953556acde161a739414988b7f0))
* enable OpenTelemetry metrics and tracing by default (#1410) ([bb5095dfb615159a575933a332382ba93ba4bbd1](https://github.com/googleapis/python-spanner/commit/bb5095dfb615159a575933a332382ba93ba4bbd1))
* add support for experimental host (#1452) ([9535e5e096f6ab53f2817af4fd7ac1fa2ca71660](https://github.com/googleapis/python-spanner/commit/9535e5e096f6ab53f2817af4fd7ac1fa2ca71660))

### Bug Fixes

* Provide Spanner Option to disable metrics (#1460) ([f1ebc43ba4c1ee3a8ee77ae4b0b2468937f06b71](https://github.com/googleapis/python-spanner/commit/f1ebc43ba4c1ee3a8ee77ae4b0b2468937f06b71))
* Deprecate credentials_file argument ([8b6f154085543953556acde161a739414988b7f0](https://github.com/googleapis/python-spanner/commit/8b6f154085543953556acde161a739414988b7f0))
* configure keepAlive time for gRPC TCP connections (#1448) ([efb2833e52e54b096e552a4d91f94b017ac733bb](https://github.com/googleapis/python-spanner/commit/efb2833e52e54b096e552a4d91f94b017ac733bb))