Eleventh PR of the alarms-over-gateway epic
(docs/plans/alarms-over-gateway.md). Mirrors PR E.2's .NET surface
on the Rust async SDK. Depends on PR E.1 (regen, merged).
- GatewayClient::acknowledge_alarm — async unary call. Uses the
existing unary_request helper (call timeout) and routes failures
through Error mapping; non-OK protocol status promotes to
Error::ProtocolStatus via ensure_protocol_success.
- GatewayClient::query_active_alarms — async server-streaming call
returning a new ActiveAlarmStream type alias (parallel to
EventStream). Errors are pre-mapped from tonic::Status; dropping
the stream cancels the call cooperatively.
- GATEWAY_PROTOCOL_VERSION bumped 2 → 3 to match the .NET contract.
- FakeGateway test impl extends to satisfy the new trait methods so
client_behavior.rs builds. Two new integration tests cover the
new SDK methods.
Tests:
- 12 unit + 10 client_behavior + 4 proto_fixtures = 26 tests, all
pass under cargo test (Rust 1.x via existing toolchain).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty