Files
mxaccessgw/clients/proto/proto-inputs.json
Joseph Doherty 0f88a953d7 proto: add alarm-transition event family + ack/query RPCs (PR A.1)
First PR of the alarms-over-gateway epic
(docs/plans/alarms-over-gateway.md in lmxopcua). Pure contract-surface
change — no functional wiring yet. Worker-side subscription (A.2),
gateway-side dispatch + ack handler (A.3), and ConditionRefresh
(A.4) follow.

mxaccess_gateway.proto:

- Extend MxEventFamily with MX_EVENT_FAMILY_ON_ALARM_TRANSITION = 5.
- Extend MxEvent.body oneof with OnAlarmTransitionEvent on_alarm_transition = 24.
- Add OnAlarmTransitionEvent message carrying the full MxAccess alarm
  payload (full reference, source object, alarm-type-name, transition
  kind, raw severity, original raise timestamp, transition timestamp,
  operator user/comment, category, description, current/limit value).
  Mapping to OPC UA 0-1000 severity ladder happens server-side in
  lmxopcua's MxAccessSeverityMapper (B.1) — gateway preserves the
  native MxAccess scale.
- Add AlarmTransitionKind enum (Raise / Acknowledge / Clear / Retrigger).
- Add ActiveAlarmSnapshot + AlarmConditionState for the
  ConditionRefresh stream.
- Add public RPCs AcknowledgeAlarm (unary) and QueryActiveAlarms
  (server-streaming) on MxAccessGateway service.
- Add AcknowledgeAlarmRequest/Reply + QueryActiveAlarmsRequest.

GatewayContractInfo.GatewayProtocolVersion bumps 2 -> 3. Fixture
manifests (proto-inputs, behavior, parity, golden OpenSessionReply)
and protoset descriptor regenerated.

Tests: round-trip serialization for the new messages with
all-fields-populated and empty-optional-fields cases; oneof
last-write-wins guard between OnDataChange and OnAlarmTransition;
descriptor service-method enumeration includes the two new RPCs.
All 273 existing tests still pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-30 15:34:35 -04:00

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{
"schemaVersion": 1,
"contractName": "mxaccess-gateway",
"gatewayProtocolVersion": 3,
"workerProtocolVersion": 1,
"protoRoot": "src/MxGateway.Contracts/Protos",
"sourceFiles": [
{
"path": "mxaccess_gateway.proto",
"role": "public_gateway"
},
{
"path": "mxaccess_worker.proto",
"role": "gateway_worker_ipc"
},
{
"path": "galaxy_repository.proto",
"role": "public_galaxy_repository"
}
],
"descriptorSet": "clients/proto/descriptors/mxaccessgw-client-v1.protoset",
"fixtureRoot": "clients/proto/fixtures/golden",
"behaviorFixtureRoot": "clients/proto/fixtures/behavior",
"generatedOutputs": {
"dotnet": "clients/dotnet/generated",
"go": "clients/go/internal/generated",
"rust": "clients/rust/src/generated",
"python": "clients/python/src/mxgateway/generated",
"java": "clients/java/src/main/generated"
}
}