update-client-library-version

Development

Guides through updating a Google Cloud Go client library to the latest version across the Config Connector repository.

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Source SKILL.md: https://github.com/GoogleCloudPlatform/k8s-config-connector/blob/HEAD/.gemini/skills/update-client-library-version/SKILL.md

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Upgrading Google Cloud Client Libraries in Config Connector

This skill outlines the process for updating Google Cloud client libraries (e.g., cloud.google.com/go/alloydb or cloud.google.com/go/spanner) in Config Connector (KCC).

Workflow

1. Identify the Latest Version

Find the latest version of the target Go client library. You can run:

go list -m -versions cloud.google.com/go/<service>

2. Update the Root Module

Update the dependency in the root go.mod directory to the target version and tidy up.

go get cloud.google.com/go/<service>@<version>
go mod tidy

3. Update the MockGCP Module

Update the dependency in the mockgcp/go.mod directory to align version configuration and tidy up.

cd mockgcp
go get cloud.google.com/go/<service>@<version>
go mod tidy
cd ..

4. Verify Fuzzing & Identify Missing Fields

Run KRM mapping fuzz tests to ensure the updated types do not introduce serialization or validation regressions.

go test -v ./pkg/fuzztesting/fuzztests/

If any new fields are introduced in the updated library, the roundtrip verification might fail. The failure messages will output helpful recommendations such as: Add f.Unimplemented_NotYetTriaged(".new_field") to the fuzzer for the proto type <proto_type> to mark this field as not yet triaged.

5. Mark New Fields as Untriaged

Locate the corresponding fuzzer file for the service (typically under pkg/controller/direct/<service>/<kind>_fuzzer.go). Add the recommended field ignore using f.Unimplemented_NotYetTriaged(".new_field") in the initialization of the fuzzer.

6. Format and Validate

Run formatting and verify the entire package compiled without static analysis issues:

make fmt
go vet ./pkg/controller/direct/<service>/... ./pkg/fuzztesting/fuzztests/...

Run the fuzz tests again to ensure all tests pass:

go test -v ./pkg/fuzztesting/fuzztests/