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Phase 2 PR 11 — HistoryReadEvents IPC (alarm history). New Shared.Contracts messages HistoryReadEventsRequest/Response + GalaxyHistoricalEvent DTO (MessageKind 0x66/0x67). IGalaxyBackend gains HistoryReadEventsAsync, Stub/DbBacked return canonical pending error, MxAccessGalaxyBackend delegates to _historian.ReadEventsAsync (ported in PR 5) and maps HistorianEventDto → GalaxyHistoricalEvent — Guid.ToString() for EventId wire shape, DateTime → Unix ms for both EventTime (when the event fired in the process) and ReceivedTime (when the Historian persisted it), DisplayText + Severity pass through. SourceName is string? — null means 'all sources' (passed straight through to HistorianDataSource.ReadEventsAsync which adds the AddEventFilter('Source', Equal, ...) only when non-null). Distinct from the live GalaxyAlarmEvent type because historical rows carry both timestamps and lack StateTransition (Historian logs instantaneous events, not the OPC UA Part 9 alarm lifecycle; translating to OPC UA event lifecycle is the alarm-subsystem's job). Guards: null historian → Historian-disabled error; SDK exception → Success=false with message chained. Tests (3 new): disabled-error when historian null, maps HistorianEventDto with full field set (Id/Source/EventTime/ReceivedTime/DisplayText/Severity=900) to GalaxyHistoricalEvent, null SourceName passes through unchanged (verifies the 'all sources' contract). Galaxy.Host.Tests Unit suite 34 pass / 0 fail. Galaxy.Host builds clean. Branches off phase-2-pr10-history-attime since both extend the MessageKind enum; fast-forwards if PR 10 merges first.

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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-04-18 07:08:16 -04:00
parent d13f919112
commit ca025ebe0c
8 changed files with 234 additions and 0 deletions
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src/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Host/Backend/IGalaxyBackend.cs
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@@ -40,6 +40,7 @@ public interface IGalaxyBackend
Task<HistoryReadResponse> HistoryReadAsync(HistoryReadRequest req, CancellationToken ct);
Task<HistoryReadProcessedResponse> HistoryReadProcessedAsync(HistoryReadProcessedRequest req, CancellationToken ct);
Task<HistoryReadAtTimeResponse> HistoryReadAtTimeAsync(HistoryReadAtTimeRequest req, CancellationToken ct);
Task<HistoryReadEventsResponse> HistoryReadEventsAsync(HistoryReadEventsRequest req, CancellationToken ct);
Task<RecycleStatusResponse> RecycleAsync(RecycleHostRequest req, CancellationToken ct);
}