feat: add gRPC interceptor support as library-grpc module

[MRezaNasirloo]

Adds ChuckerGrpcInterceptor in a new optional library-grpc module so gRPC calls are visible alongside HTTP traffic in the Chucker UI. A matching library-grpc-no-op module provides the release-build no-op.

• library-grpc: real interceptor — captures all four gRPC call types (unary, server-stream, client-stream, bidi-stream), headers, trailers, request/response bodies, status codes and errors
• library-grpc-no-op: source-compatible stub that passes calls through
• sample: embedded Netty server + GrpcTask demo exercising all call types
• API dump placeholders added; run ./gradlew apiDump to regenerate

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[cortinico]

Adds ChuckerGrpcInterceptor in a new optional library-grpc module so gRPC calls are visible alongside HTTP traffic in the Chucker UI. A matching library-grpc-no-op module provides the release-build no-op.

Before sending a PR like this, why haven't you opened a GH issue to discuss it?

[Copilot]

Pull request overview

Adds gRPC traffic capture to Chucker by introducing a ChuckerGrpcInterceptor (with a no-op counterpart) and a sample app demo that exercises all four gRPC call types, so gRPC calls can be inspected alongside HTTP transactions in the Chucker UI.

Changes:

• Added ChuckerGrpcInterceptor (real) and a source-compatible no-op ChuckerGrpcInterceptor implementation.
• Extended the sample app with an embedded gRPC server + client task and UI controls to trigger gRPC calls.
• Updated Gradle version catalog and sample build configuration to generate gRPC stubs via protobuf/protoc.

Reviewed changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
sample/src/main/res/values/strings.xml	Adds UI string for the new gRPC demo action.
sample/src/main/kotlin/com/chuckerteam/chucker/sample/SampleGrpcServer.kt	Adds an embedded gRPC server implementing unary + streaming call types.
sample/src/main/kotlin/com/chuckerteam/chucker/sample/SampleApplication.kt	Starts/stops the embedded gRPC server and exposes a ChuckerCollector.
sample/src/main/kotlin/com/chuckerteam/chucker/sample/MainActivity.kt	Wires a new “Do gRPC activity” action into the UI and manages task lifecycle.
sample/src/main/kotlin/com/chuckerteam/chucker/sample/GrpcTask.kt	Adds a demo gRPC client that makes unary/streaming calls through ChuckerGrpcInterceptor.
sample/src/main/kotlin/com/chuckerteam/chucker/sample/compose/testtags/ChuckerTestTags.kt	Adds a test tag for the new gRPC button.
sample/src/main/kotlin/com/chuckerteam/chucker/sample/compose/ChuckerSampleMainScreen.kt	Adds onDoGrpc callback plumbing to the main Compose screen.
sample/src/main/kotlin/com/chuckerteam/chucker/sample/compose/ChuckerSampleControls.kt	Adds a gRPC button to the control list and tags.
sample/src/main/grpc/sample_service.proto	Defines the gRPC service and messages used by the sample.
sample/src/main/AndroidManifest.xml	Registers SampleApplication.
sample/build.gradle.kts	Adds protobuf + gRPC dependencies and configures protoc/grpc codegen for the sample.
library/src/main/kotlin/com/chuckerteam/chucker/api/ChuckerGrpcInterceptor.kt	Implements the gRPC ClientInterceptor that records gRPC activity into HttpTransaction.
library/build.gradle.kts	Adds (compileOnly) gRPC API dependency for the new interceptor.
library/api/library.api	Updates the public API dump to include ChuckerGrpcInterceptor.
library-no-op/src/main/kotlin/com/chuckerteam/chucker/api/ChuckerGrpcInterceptor.kt	Adds the no-op pass-through interceptor variant.
library-no-op/build.gradle.kts	Adds (compileOnly) gRPC API dependency for the no-op interceptor.
library-no-op/api/library-no-op.api	Updates the no-op public API dump to include ChuckerGrpcInterceptor.
gradle/libs.versions.toml	Adds gRPC/protobuf versions and library/plugin coordinates.
CHANGELOG.md	Documents the new ChuckerGrpcInterceptor feature.

Comments suppressed due to low confidence (1)

library/src/main/kotlin/com/chuckerteam/chucker/api/ChuckerGrpcInterceptor.kt:85

• Potential race: collector.onRequestSent(transaction) inserts the transaction asynchronously and assigns transaction.id later. onMessage()/onClose() call collector.onResponseReceived(transaction) immediately after ensureStarted(), but updateTransaction() will be a no-op until the insert finishes, so early/fast gRPC responses can be dropped (including the final response if close happens quickly). Ensure the insert completes before issuing any updates (e.g., await insertion or provide a collector API that guarantees ordering).

        fun ensureStarted() {
            if (transactionStarted.compareAndSet(false, true)) {
                collector.onRequestSent(transaction)
            }
        }

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[MRezaNasirloo]

Adds ChuckerGrpcInterceptor in a new optional library-grpc module so gRPC calls are visible alongside HTTP traffic in the Chucker UI. A matching library-grpc-no-op module provides the release-build no-op.

Before sending a PR like this, why haven't you opened a GH issue to discuss it?

@cortinico Hey there! This is still a work in progress. I accidentally opened this PR. I’m reworking it to remove the new modules so users don’t have to add them manually. I’ve set it to draft, but feel free to close it if you’d like.