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fix(historian): provision tags whose historization flips on or historian name changes (#600)

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Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
This commit is contained in:
Joseph Doherty
2026-10-08 06:45:48 -04:00
parent 3baa332d6b
commit dc54b883eb
2 changed files with 73 additions and 9 deletions
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src/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer/AddressSpaceApplier.cs
+33 -9
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@@ -579,7 +579,14 @@ public sealed class AddressSpaceApplier
}
/// <summary>
/// Auto-provision the historian for the added historized equipment tags. Runs on the OPC UA
/// Resolve the historian name EXACTLY as MaterialiseRawSubtree does: a null/blank override falls
/// back to the RawPath (== NodeId).
/// </summary>
private static string ResolveHistorianName(RawTagPlan tag) =>
string.IsNullOrWhiteSpace(tag.HistorianTagname) ? tag.NodeId : tag.HistorianTagname;
/// <summary>
/// Auto-provision the historian for the added (and newly-historized / renamed-historian) raw tags. Runs on the OPC UA
/// publish actor's pinned thread, so the synchronous portion is kept to building the request
/// list only and the gateway round-trip is dispatched fire-and-forget. The whole hook is wrapped
/// in try/catch — a synchronously-throwing provisioner (or any request-building fault) is
@@ -597,22 +604,39 @@ public sealed class AddressSpaceApplier
foreach (var tag in plan.AddedRawTags)
{
if (!tag.IsHistorized || tag.Alarm is not null) continue;
AddRequest(tag);
}
// Parse the driver-agnostic data type from the tag's DataType string. An unparseable
// type is skipped (logged at Debug) rather than faulting the hook.
// #600.1: a historization flip (false->true) or a historian-name / data-type change on an
// EXISTING raw tag never appears in AddedRawTags, so EnsureTags never fired for it. EnsureTags is
// an upsert, so re-ensuring is safe; an unchanged pair is a no-op. Only raw deltas are used - a
// UNS mirror delta must not double-provision the same historian tag.
foreach (var d in plan.ChangedRawTags)
{
var cur = d.Current;
if (!cur.IsHistorized || cur.Alarm is not null) continue;
var prev = d.Previous;
var wasProvisioned = prev.IsHistorized && prev.Alarm is null;
if (wasProvisioned
&& ResolveHistorianName(prev) == ResolveHistorianName(cur)
&& string.Equals(prev.DataType, cur.DataType, StringComparison.OrdinalIgnoreCase))
continue;
AddRequest(cur);
}
void AddRequest(RawTagPlan tag)
{
// An unparseable data type is skipped (logged at Debug) rather than faulting the hook.
if (!Enum.TryParse<DriverDataType>(tag.DataType, ignoreCase: true, out var dataType))
{
_logger.LogDebug(
"AddressSpaceApplier: skipping historian provisioning for an added historized tag whose data type '{DataType}' is not a DriverDataType",
"AddressSpaceApplier: skipping historian provisioning for a historized tag whose data type '{DataType}' is not a DriverDataType",
tag.DataType);
continue;
return;
}
// Resolve the historian name EXACTLY as MaterialiseRawSubtree does: a null/blank override
// falls back to the RawPath (== NodeId).
var historianName = string.IsNullOrWhiteSpace(tag.HistorianTagname) ? tag.NodeId : tag.HistorianTagname;
(requests ??= new List<HistorianTagProvisionRequest>()).Add(
new HistorianTagProvisionRequest(historianName, dataType, EngineeringUnit: null, Description: tag.Name));
new HistorianTagProvisionRequest(ResolveHistorianName(tag), dataType, EngineeringUnit: null, Description: tag.Name));
}
if (requests is null) return;