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fix(gapic-generator): do not emit empty routing metadata on client-streaming RPCs - #18591
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This pull request prevents the generation of routing metadata headers for client streaming and bidirectional streaming RPC methods in Python GAPIC clients. It updates Jinja2 templates (both standard and ads-specific) to conditionally skip metadata generation when method.client_streaming is true. It also adds streaming methods to test proto definitions and introduces a comprehensive unit test to verify this behavior. I have no feedback to provide as there are no review comments.
daniel-sanche
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October 7, 2026 03:11
ohmayr
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🤖 I have created a release *beep* *boop* --- <details><summary>db-dtypes: 1.8.0</summary> ## [1.8.0](db-dtypes-v1.7.2...db-dtypes-v1.8.0) (2026-10-15) ### Features * **db-dtypes:** support pandas 3.1 ([#18590](#18590)) ([f18a11e](f18a11e)) </details> <details><summary>gapic-generator: 1.43.1</summary> ## [1.43.1](gapic-generator-v1.43.0...gapic-generator-v1.43.1) (2026-10-15) ### Bug Fixes * **gapic-generator:** do not emit empty routing metadata on client-streaming RPCs ([#18591](#18591)) ([bbdd643](bbdd643)) * **gapic-generator:** resolve showcase-mypy incompatible redefinition ([7032a89](7032a89)) * **gapic-generator:** resolve showcase-mypy incompatible redefinition and add canary CI job ([#18701](#18701)) ([7032a89](7032a89)) </details> <details><summary>gcp-sphinx-docfx-yaml: 3.4.0</summary> ## [3.4.0](gcp-sphinx-docfx-yaml-v3.3.3...gcp-sphinx-docfx-yaml-v3.4.0) (2026-10-15) ### Features * **gcp-sphinx-docfx-yaml:** optimize performance ([#18588](#18588)) ([cf1a0e5](cf1a0e5)) </details> <details><summary>google-cloud-alloydb: 0.11.4</summary> ## [0.11.4](google-cloud-alloydb-v0.11.3...google-cloud-alloydb-v0.11.4) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-bigquery: 3.46.2</summary> ## [3.46.2](google-cloud-bigquery-v3.46.1...google-cloud-bigquery-v3.46.2) (2026-10-15) ### Bug Fixes * **bigquery:** accept empty sourceFormat fields ([#18472](#18472)) ([590e43d](590e43d)) * **bigquery:** drop startIndex whenever a page token is sent ([#18603](#18603)) ([fc6eae3](fc6eae3)) * **bigquery:** remove PendingDeprecationWarning from RowIterator.to_arrow ([#18684](#18684)) ([9025061](9025061)) </details> <details><summary>google-cloud-bigquery-storage: 2.43.0</summary> ## [2.43.0](google-cloud-bigquery-storage-v2.42.0...google-cloud-bigquery-storage-v2.43.0) (2026-10-15) ### Features * **bigquery-storage:** add Arrow options and cancel to read_rows ([#18643](#18643)) ([939bdd0](939bdd0)) </details> <details><summary>google-cloud-bigtable: 2.50.1</summary> ## 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[1.29.0](google-cloud-contact-center-insights-v1.28.0...google-cloud-contact-center-insights-v1.29.0) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-dataproc: 5.32.0</summary> ## [5.32.0](google-cloud-dataproc-v5.31.0...google-cloud-dataproc-v5.32.0) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-datastream: 1.21.0</summary> ## [1.21.0](google-cloud-datastream-v1.20.0...google-cloud-datastream-v1.21.0) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-memorystore: 0.5.6</summary> ## [0.5.6](google-cloud-memorystore-v0.5.5...google-cloud-memorystore-v0.5.6) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-pubsub: 2.43.0</summary> ## [2.43.0](google-cloud-pubsub-v2.42.0...google-cloud-pubsub-v2.43.0) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-redis-cluster: 0.5.5</summary> ## [0.5.5](google-cloud-redis-cluster-v0.5.4...google-cloud-redis-cluster-v0.5.5) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-securitycenter: 1.48.0</summary> ## [1.48.0](google-cloud-securitycenter-v1.47.0...google-cloud-securitycenter-v1.48.0) (2026-10-15) ### Features * update API sources and regenerate ([#18699](#18699)) ([1aa57db](1aa57db)) </details> <details><summary>google-cloud-storage: 3.17.1</summary> ## [3.17.1](google-cloud-storage-v3.17.0...google-cloud-storage-v3.17.1) (2026-10-15) ### Bug Fixes * **storage:** set GRPC_ALTS_MAX_CONCURRENT_HANDSHAKES=2 in benchmark runner ([#18703](#18703)) ([a9ca134](a9ca134)) </details> <details><summary>google-developer-knowledge: 0.1.5</summary> ## 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Previously, the generator would output empty routing metadata for client-streaming RPCs. Instead, we should skip adding routing metadata altogether when
client_streamingis true.Addresses #16650 (will be fixed after next generator update)