feat(api-core): centralize rest transcoding helpers - #17765
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This pull request introduces a new rest_transcoding module under google/api_core/gapic_v1 to handle transcoding of requests into HTTP methods, URIs, bodies, and query parameters. It also adds comprehensive unit tests for this new functionality, configures a session-scoped pytest fixture to isolate tests from workstation mTLS environments, and updates Python version configurations. The feedback suggests optimizing the conversion of protobuf messages to Python dictionaries in rest_transcoding.py by using json_format.MessageToDict instead of serializing to JSON and deserializing it back.
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/gemini review |
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This pull request introduces a new helper module rest_helpers in google.api_core.gapic_v1 containing a transcode function, which converts protobuf or proto-plus request messages into HTTP methods, URIs, JSON bodies, and query parameters. It also includes comprehensive unit tests for this function and a new session-scoped test fixture to isolate unit tests from workstation mTLS environments. There are no review comments, and I have no additional feedback to provide.
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Edit: I guess this is replacing a number of methods in rest_base? Can you show a diff of what the changes will look like in the generated code? |
Regarding the code this is replacing: This is replacing the three private helper methods generated for each REST RPC: _get_transcoded_request, _get_request_body_json, and _get_query_params_json (defined in rest_base.py.j2:L128-167 and originally called within the template at _shared_macros.j2:L209-216). By consolidating them, we avoid generating duplicate request serialization, JSON body conversion, and default required field query parameter injection logic for every REST endpoint. Regarding the method name: Great point. I've renamed transcode in rest_helpers.py to transcode_request to make it clear that it transcodes a full request and to avoid any confusion with path_template.transcode. for a diff example: |
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…i_core.rest_helpers
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/gemini review |
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This pull request introduces the transcode_request utility (and its alias transcode) in rest_helpers.py to convert request messages into HTTP methods, URIs, bodies, and query parameters, accompanied by comprehensive unit tests and an mTLS environment isolation fixture. The reviewer identified a potential issue where merging default values for required fields could lead to duplicate parameters if those fields are already bound to the URI path or request body. To resolve this, the reviewer suggested importing re and adding logic to identify bound fields from the HTTP options so they can be excluded from the query parameters, along with corresponding test cases to validate this behavior.
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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I'd like to see how this is used in the generated code before approving, but it looks like that PR doesn't have the generated files yet: #17766 |
…t coverage in rest_helpers
… 100% total branch coverage
| if k in bound_fields: | ||
| continue | ||
| if k not in query_params_json: | ||
| query_params_json[k] = v |
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What exactly is going on here? I don't see this in the old query_params implementation? Cam you add comments? The .split(".") pattern doesn't seem very robust to me
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to keep this PR simple and not introduce u too many new changes I reverted this to keep the old implementation !
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Thanks, yeah it would be helpful to call out places where the code is changing while moving, so I can know what needs more attention, and what is a simple move
…gic in rest helpers
… keep consistent with original transports
…iginal transport serialization logic
this PR refactors generator templates to delegate REST transcoding to the centralized helper in `google-api-core`. Scope of Changes: - **`_shared_macros.j2`**: Replaced inline static helper invocation with `gapic_v1.rest_transcoding.transcode()`. - **`rest_base.py.j2`**: Stripped the redundant `_get_transcoded_request`, `_get_request_body_json`, and `_get_query_params_json` helper functions. - **`_rest_mixins_base.py.j2`**: Stripped the redundant static helpers from API REST mixins base. - **`rest.py.j2` & `rest_asyncio.py.j2`**: Passed the configuration flags (like `opts.rest_numeric_enums`) into the transcoding macro. - **`noxfile.py`**: Configured local `packages/google-api-core` to be installed during virtualenv test generation so the new transcoding runtime module is available. related PR: #17765
🤖 I have created a release *beep* *boop* --- <details><summary>bigquery-magics: 0.15.1</summary> ## [0.15.1](bigquery-magics-v0.15.0...bigquery-magics-v0.15.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>gapic-generator: 1.38.0</summary> ## [1.38.0](gapic-generator-v1.37.1...gapic-generator-v1.38.0) (2026-08-06) ### Features * **generator:** delegate REST transcoding to google-api-core ([#17766](#17766)) ([7b05aab](7b05aab)) * **generator:** gapic generator centralization routing ([#17816](#17816)) ([32a2442](32a2442)) ### Bug Fixes * add typing for header_params ([#17914](#17914)) ([9e98b93](9e98b93)) * **api-core:** use truthiness check in setup_request_id to support proto-plus messages ([#18000](#18000)) ([ad8f93c](ad8f93c)) * avoid retaining routing parameter instances in cache ([#17961](#17961)) ([f64ada2](f64ada2)) * bump aiohttp from 3.13.5 to 3.14.3 in /packages/gapic-generator ([#17990](#17990)) ([6ff5815](6ff5815)) * bump cryptography from 48.0.1 to 50.0.0 in /packages/gapic-generator ([#17991](#17991)) ([d607f25](d607f25)) * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * **generator:** use flat_ref_types in test templates and delete remove-unused-imports ([#17900](#17900)) ([395f764](395f764)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) * resolve collision with reserved words in samples ([#17912](#17912)) ([588cda9](588cda9)) * upgrade Protobuf and gRPC in WORKSPACE ([#17882](#17882)) ([5b5ece5](5b5ece5)) </details> <details><summary>gcp-sphinx-docfx-yaml: 3.3.1</summary> ## [3.3.1](gcp-sphinx-docfx-yaml-v3.3.0...gcp-sphinx-docfx-yaml-v3.3.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-ads-admanager: 0.10.1</summary> ## [0.10.1](google-ads-admanager-v0.10.0...google-ads-admanager-v0.10.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-api-core: 2.34.0</summary> ## [2.34.0](google-api-core-v2.33.0...google-api-core-v2.34.0) (2026-08-06) ### Features * Add Feature Gating configuration helpers. ([#17524](#17524)) ([eceea95](eceea95)) * **api-core:** centralize rest transcoding helpers ([#17765](#17765)) ([4f21b8b](4f21b8b)) ### Bug Fixes * **api-core:** use truthiness check in setup_request_id to support proto-plus messages ([#18000](#18000)) ([ad8f93c](ad8f93c)) * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * deduplicate x-goog-api-client headers ([#17616](#17616)) ([6167e41](6167e41)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-apps-chat: 0.10.4</summary> ## [0.10.4](google-apps-chat-v0.10.3...google-apps-chat-v0.10.4) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-auth: 2.56.3</summary> ## [2.56.3](google-auth-v2.56.2...google-auth-v2.56.3) (2026-08-06) ### Bug Fixes * **auth:** avoid creating mTLS SSL context for custom async transports ([#17825](#17825)) ([fbe33f9](fbe33f9)), refs [#17622](#17622) * **auth:** only trigger mTLS certificate rotation on mTLS endpoints ([#17928](#17928)) ([f7b49ea](f7b49ea)) * **auth:** properly extract stdout from gnubby webauthn plugin failures ([#17885](#17885)) ([744e826](744e826)) * deduplicate x-goog-api-client headers ([#17616](#17616)) ([6167e41](6167e41)) * **oauth2:** avoid redundant JWKS network fetches ([#17891](#17891)) ([de53298](de53298)) ### Performance Improvements * **auth:** use generator expression in any() to allow short-circuiting ([735e565](735e565)) * **auth:** use generator expression in any() to allow short-circuiting ([#17937](#17937)) ([735e565](735e565)) </details> <details><summary>google-auth-httplib2: 0.4.1</summary> ## [0.4.1](google-auth-httplib2-v0.4.0...google-auth-httplib2-v0.4.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-access-context-manager: 0.6.1</summary> ## [0.6.1](google-cloud-access-context-manager-v0.6.0...google-cloud-access-context-manager-v0.6.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-agentidentitycredentials: 0.1.1</summary> ## [0.1.1](google-cloud-agentidentitycredentials-v0.1.0...google-cloud-agentidentitycredentials-v0.1.1) (2026-08-06) ### Features * **google/cloud/agentidentitycredentials/v1beta:** add google-cloud-agentidentitycredentials v1beta ([#17898](#17898)) ([b692dae](b692dae)) * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-audit-log: 0.6.1</summary> ## [0.6.1](google-cloud-audit-log-v0.6.0...google-cloud-audit-log-v0.6.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-backupdr: 0.10.1</summary> ## [0.10.1](google-cloud-backupdr-v0.10.0...google-cloud-backupdr-v0.10.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-batch: 0.22.2</summary> ## [0.22.2](google-cloud-batch-v0.22.1...google-cloud-batch-v0.22.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-biglake: 0.5.1</summary> ## [0.5.1](google-cloud-biglake-v0.5.0...google-cloud-biglake-v0.5.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-biglake-hive: 0.3.2</summary> ## [0.3.2](google-cloud-biglake-hive-v0.3.1...google-cloud-biglake-hive-v0.3.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-bigquery: 3.43.0</summary> ## [3.43.0](google-cloud-bigquery-v3.42.3...google-cloud-bigquery-v3.43.0) (2026-08-06) ### Features * add pandas-gbq capability helper ([#17957](#17957)) ([2207ca6](2207ca6)) ### Bug Fixes * **bigquery:** Fix bigquery socket leak ([#17953](#17953)) ([8c26b38](8c26b38)) * remove stray debug print in RangeQueryParameter constructor ([#17973](#17973)) ([fe7bfd0](fe7bfd0)) ### Documentation * add connector libraries overview table to package README ([#17939](#17939)) ([71bc622](71bc622)) * correct return type in CellDataParser.time_to_py docstring ([#17972](#17972)) ([bd1e224](bd1e224)) </details> <details><summary>google-cloud-bigquery-storage: 2.40.0</summary> ## [2.40.0](google-cloud-bigquery-storage-v2.39.0...google-cloud-bigquery-storage-v2.40.0) (2026-08-06) ### Features * delegate ReadRowsPage.to_arrow to pandas_gbq.arrow ([#17938](#17938)) ([aedc66f](aedc66f)) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) </details> <details><summary>google-cloud-binary-authorization: 1.19.1</summary> ## [1.19.1](google-cloud-binary-authorization-v1.19.0...google-cloud-binary-authorization-v1.19.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-build: 3.38.1</summary> ## [3.38.1](google-cloud-build-v3.38.0...google-cloud-build-v3.38.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-commerceproducer: 0.1.1</summary> ## [0.1.1](google-cloud-commerceproducer-v0.1.0...google-cloud-commerceproducer-v0.1.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-containeranalysis: 2.22.1</summary> ## [2.22.1](google-cloud-containeranalysis-v2.22.0...google-cloud-containeranalysis-v2.22.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-core: 2.6.1</summary> ## [2.6.1](google-cloud-core-v2.6.0...google-cloud-core-v2.6.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-documentai-toolbox: 0.17.2</summary> ## [0.17.2](google-cloud-documentai-toolbox-v0.17.1...google-cloud-documentai-toolbox-v0.17.2) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-filestore: 1.17.1</summary> ## [1.17.1](google-cloud-filestore-v1.17.0...google-cloud-filestore-v1.17.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-firestore: 2.28.1</summary> ## [2.28.1](google-cloud-firestore-v2.28.0...google-cloud-firestore-v2.28.1) (2026-08-06) ### Bug Fixes * **firestore:** BulkWriter pop from an empty deque ([#17490](#17490)) ([8e826f0](8e826f0)) * **firestore:** preserve async limit_to_last ordering ([#17879](#17879)) ([caf2fdb](caf2fdb)) </details> <details><summary>google-cloud-gke-hub: 1.25.1</summary> ## [1.25.1](google-cloud-gke-hub-v1.25.0...google-cloud-gke-hub-v1.25.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-iam: 2.24.1</summary> ## [2.24.1](google-cloud-iam-v2.24.0...google-cloud-iam-v2.24.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-logging: 3.16.2</summary> ## [3.16.2](google-cloud-logging-v3.16.1...google-cloud-logging-v3.16.2) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-memorystore: 0.5.4</summary> ## [0.5.4](google-cloud-memorystore-v0.5.3...google-cloud-memorystore-v0.5.4) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-ndb: 2.5.1</summary> ## [2.5.1](google-cloud-ndb-v2.5.0...google-cloud-ndb-v2.5.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-network-connectivity: 2.17.0</summary> ## [2.17.0](google-cloud-network-connectivity-v2.16.0...google-cloud-network-connectivity-v2.17.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-network-services: 0.10.2</summary> ## [0.10.2](google-cloud-network-services-v0.10.1...google-cloud-network-services-v0.10.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) * update googleapis and regenerate ([#17933](#17933)) ([f7a23a0](f7a23a0)) </details> <details><summary>google-cloud-pubsub: 2.39.1</summary> ## [2.39.1](google-cloud-pubsub-v2.39.0...google-cloud-pubsub-v2.39.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) </details> <details><summary>google-cloud-quotas: 0.6.2</summary> ## [0.6.2](google-cloud-quotas-v0.6.1...google-cloud-quotas-v0.6.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-redis-cluster: 0.5.2</summary> ## [0.5.2](google-cloud-redis-cluster-v0.5.1...google-cloud-redis-cluster-v0.5.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-service-control: 1.21.0</summary> ## [1.21.0](google-cloud-service-control-v1.20.0...google-cloud-service-control-v1.21.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-spanner: 3.69.1</summary> ## [3.69.1](google-cloud-spanner-v3.69.0...google-cloud-spanner-v3.69.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * **metrics:** fix GFE and AFE metrics publishing ([#17561](#17561)) ([abf1178](abf1178)) * **spanner:** escape embedded backticks in dbapi escape_name ([#17810](#17810)) ([c8b0b28](c8b0b28)) * **spanner:** implement dict protocol and nested unwrapping for JsonObject ([#17915](#17915)) ([06c1f05](06c1f05)), refs [#15870](#15870) </details> <details><summary>google-cloud-storage: 3.13.1</summary> ## [3.13.1](google-cloud-storage-v3.13.0...google-cloud-storage-v3.13.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-cloud-storage-control: 1.13.0</summary> ## [1.13.0](google-cloud-storage-control-v1.12.0...google-cloud-storage-control-v1.13.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-support: 0.5.2</summary> ## [0.5.2](google-cloud-support-v0.5.1...google-cloud-support-v0.5.2) (2026-08-06) ### Features * update googleapis and regenerate ([#17933](#17933)) ([f7a23a0](f7a23a0)) </details> <details><summary>google-cloud-tasks: 2.24.0</summary> ## [2.24.0](google-cloud-tasks-v2.23.0...google-cloud-tasks-v2.24.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-cloud-testutils: 1.9.2</summary> ## [1.9.2](google-cloud-testutils-v1.9.1...google-cloud-testutils-v1.9.2) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>google-developer-knowledge: 0.1.1</summary> ## [0.1.1](google-developer-knowledge-v0.1.0...google-developer-knowledge-v0.1.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-maps-navconnect: 0.2.1</summary> ## [0.2.1](google-maps-navconnect-v0.2.0...google-maps-navconnect-v0.2.1) (2026-08-06) ### Features * update googleapis and regenerate ([#17893](#17893)) ([e70ab6f](e70ab6f)) </details> <details><summary>google-resumable-media: 2.10.1</summary> ## [2.10.1](google-resumable-media-v2.10.0...google-resumable-media-v2.10.1) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>googleapis-common-protos: 1.75.1</summary> ## [1.75.1](googleapis-common-protos-v1.75.0...googleapis-common-protos-v1.75.1) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>grafeas: 1.24.0</summary> ## [1.24.0](grafeas-v1.23.0...grafeas-v1.24.0) (2026-08-06) ### Features * update googleapis and regenerate ([#17933](#17933)) ([f7a23a0](f7a23a0)) </details> <details><summary>grpc-google-iam-v1: 0.14.5</summary> ## [0.14.5](grpc-google-iam-v1-v0.14.4...grpc-google-iam-v1-v0.14.5) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>proto-plus: 1.28.3</summary> ## [1.28.3](proto-plus-v1.28.2...proto-plus-v1.28.3) (2026-08-06) ### Bug Fixes * bump grpcio to 1.59.0; require Python 3.10+ ([#17351](#17351)) ([a53487a](a53487a)) * **proto-plus:** add context to TypeErrors during message manipulation ([#17682](#17682)) ([08f21a6](08f21a6)) * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> <details><summary>sqlalchemy-bigquery: 1.17.2</summary> ## [1.17.2](sqlalchemy-bigquery-v1.17.1...sqlalchemy-bigquery-v1.17.2) (2026-08-06) ### Bug Fixes * require Protobuf 6.33.5+ ([#17743](#17743)) ([d267342](d267342)) </details> --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
introduces a generic REST Transcoding helper under
google.api_core.gapic_v1.rest_transcoding.Scope of Changes:
rest_helpers.py: A centralized, parameters-driven generic utilitytranscode()that replaces the redundant code generated inside the client REST transport constructors (query parameter JSON parsing, required field default checking, body parsing, and numeric enum serialization).__init__.py: Registered lazy-loading for the module.conftest.py: Added session-scoped mock fixtures for mTLS variables to prevent local workstation client certificate leakage during python unit tests.test_rest_transcoding.py: A comprehensive test suite validating transcoding behavior for query parameters, nested fields, required field default injection, and numeric enums.This is the runtime package companion to the generator PR.