Replace the client's QueryActiveAlarmsAsync with StreamAlarmsAsync —
a session-less subscription to the gateway's central alarm feed that
yields the active-alarm snapshot followed by live transitions.
AcknowledgeAlarm is session-less (AcknowledgeAlarmRequest no longer
carries a session id). Updates the transport interface, the gRPC
transport, the test fake, and the alarm tests; the .NET client
solution builds and its alarm tests pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Client.Dotnet-001: MapRpcException typed only Unauthenticated and
PermissionDenied; every other gRPC status collapsed to an untyped exception
with the status code discarded. Added a nullable StatusCode to
MxGatewayException, extracted the duplicated mappers into a shared
RpcExceptionMapper that records the code for every status, and documented it.
Client.Dotnet-002: the production retry branch (MxGatewayException wrapping
RpcException) was never exercised. FakeGatewayTransport gained a
MapTransportExceptions mode that runs thrown RpcExceptions through
RpcExceptionMapper exactly as the production transport does.
Client.Dotnet-003: MxGatewaySession.DisposeAsync disposed _closeLock while a
concurrent CloseAsync could be parked in WaitAsync. DisposeAsync now drains
in-flight CloseAsync callers before disposing the semaphore; the client's
_disposed flag is accessed via Interlocked.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Seventh PR of the alarms-over-gateway epic
(docs/plans/alarms-over-gateway.md). Depends on PR A.1 (proto, merged)
and E.1 (regen, merged).
Hand-written .NET SDK methods on top of the regenerated proto types:
- MxGatewayClient.AcknowledgeAlarmAsync — routes through the existing
safe-unary retry pipeline (Acks are idempotent at MxAccess), maps
Unauthenticated/PermissionDenied RpcExceptions to typed
MxGatewayAuthenticationException / MxGatewayAuthorizationException
via GrpcMxGatewayClientTransport.MapRpcException.
- MxGatewayClient.QueryActiveAlarmsAsync — server-streaming
IAsyncEnumerable<ActiveAlarmSnapshot> mirroring the StreamEvents
pattern.
- IMxGatewayClientTransport extended; GrpcMxGatewayClientTransport
implements both methods using the regenerated grpc client.
- FakeGatewayTransport extended with capture lists, exception queue,
and reply / snapshot enqueue helpers.
CLI version-string assertions updated for the GatewayProtocolVersion
2 → 3 bump from A.1.
The CLI alarms verb (subscribe / acknowledge / query-active) is
deferred to a follow-up — keeping this PR focused on the SDK surface
that lmxopcua's GalaxyDriver consumes in PR B.2. The other-language
SDKs (E.3-E.6) layer the same shape on the regen.
Tests:
- 6 new MxGatewayClientAlarmsTests — request shape, cancellation
honor (linked-token via retry pipeline), Unauthenticated mapping,
streaming snapshot enumeration, filter prefix passthrough,
cancellation during enumeration.
- Full client test suite: 57 passed (was 51; 6 new).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty