refactor(#655): delete the dead driver-side history capability
HistoryRead is served server-side by IHistorianDataSource; nothing ever dispatched to a driver's IHistoryProvider. Removes IHistoryProvider, the OpcUaClient history passthrough, DriverCapability.HistoryRead (+ resilience tier rows and AdminUI row), HistoryReadStatusException and its node-manager catches, and the tests that only covered them. Shared result types and HistoryAggregateNotSupportedException stay (moved to Historian/HistoryReadContracts.cs). A stored ResilienceConfig still carrying a HistoryRead key parses (diagnostic only; new test). Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
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@@ -312,61 +312,6 @@ public sealed class NodeManagerHistoryReadPagingTests : IDisposable
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await host.DisposeAsync();
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}
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/// <summary>A passthrough backend's Bad status on a RESUME read surfaces verbatim for that node only (#649):
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/// no outbound continuation point, the cursor is consumed (no stray cursor), and a sibling node in the same
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/// batch is unaffected.</summary>
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[Fact]
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public async Task Raw_resume_read_that_throws_HistoryReadStatusException_surfaces_the_code_and_isolates_the_sibling()
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{
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var (host, server) = await BootAsync();
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var nm = server.NodeManager!;
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nm.HistoryContinuationStore = new InMemoryHistoryContinuationStore();
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var fake = new SeriesHistorianDataSource(MakeSeries(count: 250, stepSeconds: 1));
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nm.HistorianDataSource = fake;
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nm.EnsureVariable("eq-1/bad", parentFolderNodeId: null, displayName: "Bad", dataType: "Double",
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writable: false, historianTagname: "WW.Bad", realm: AddressSpaceRealm.Uns);
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nm.EnsureVariable("eq-1/ok", parentFolderNodeId: null, displayName: "Ok", dataType: "Double",
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writable: false, historianTagname: "WW.Ok", realm: AddressSpaceRealm.Uns);
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var badId = nm.TryGetVariable("eq-1/bad")!.NodeId;
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var okId = nm.TryGetVariable("eq-1/ok")!.NodeId;
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// Page 1 succeeds and emits a continuation point.
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var (_, _, cp1) = ReadRaw(nm, badId, Epoch, Epoch.AddHours(1), max: 100, inboundCp: null);
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cp1.ShouldNotBeNull();
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// The backend now refuses the bad node; one batch resumes it and freshly reads the sibling.
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fake.FailTagname = "WW.Bad";
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var context = new OperationContext(
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new RequestHeader(), secureChannelContext: null, RequestType.HistoryRead, identity: null);
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var details = new ReadRawModifiedDetails
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{
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StartTime = Epoch, EndTime = Epoch.AddHours(1), NumValuesPerNode = 100, IsReadModified = false,
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};
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var nodesToRead = new List<HistoryReadValueId>
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{
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new() { NodeId = badId, ContinuationPoint = cp1 },
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new() { NodeId = okId },
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};
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var results = new List<SdkHistoryReadResult> { null!, null! };
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var errors = new List<ServiceResult> { null!, null! };
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nm.HistoryRead(context, details, TimestampsToReturn.Both,
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releaseContinuationPoints: false, nodesToRead, results, errors);
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errors[0].StatusCode.Code.ShouldBe(StatusCodes.BadUserAccessDenied);
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results[0].ContinuationPoint.ShouldBeNull();
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errors[1].StatusCode.Code.ShouldBe(StatusCodes.Good);
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((HistoryData)ExtensionObject.ToEncodeable(results[1].HistoryData)).DataValues.Count.ShouldBe(100);
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results[1].ContinuationPoint.ShouldNotBeNull("the sibling is full-page and pages normally");
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// The consumed cursor is gone: nothing stray to resume.
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fake.FailTagname = null;
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var (_, e, _) = ReadRaw(nm, badId, Epoch, Epoch.AddHours(1), max: 100, inboundCp: cp1);
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e.StatusCode.Code.ShouldBe(StatusCodes.BadContinuationPointInvalid);
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await host.DisposeAsync();
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}
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// --- helpers --------------------------------------------------------------------------------
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/// <summary>Issue a single-node Raw HistoryRead and return that node's decoded sample values, error,
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@@ -468,8 +413,6 @@ public sealed class NodeManagerHistoryReadPagingTests : IDisposable
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private int _readCount;
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public int ReadCount => _readCount;
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/// <summary>When set, a Raw read of this tagname throws <see cref="HistoryReadStatusException"/> (#649).</summary>
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public volatile string? FailTagname;
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public void ResetReadCount() => _readCount = 0;
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public Task<HistorianRead> ReadRawAsync(
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@@ -477,8 +420,6 @@ public sealed class NodeManagerHistoryReadPagingTests : IDisposable
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CancellationToken cancellationToken)
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{
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Interlocked.Increment(ref _readCount);
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if (FailTagname is { } bad && bad == fullReference)
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throw new HistoryReadStatusException(StatusCodes.BadUserAccessDenied);
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var window = series
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.Where(s => (s.SourceTimestampUtc ?? DateTime.MinValue) >= startUtc
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&& (s.SourceTimestampUtc ?? DateTime.MinValue) <= endUtc)
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