Joseph Doherty
619207e7f5
In-box ActivitySource ("ZB.MOM.WW.OtOpcUa.Driver.Galaxy") wrapped around
the three gw-facing seams via decorators:
- TracedGalaxySubscriber — galaxy.subscribe_bulk / galaxy.unsubscribe_bulk
/ galaxy.stream_events spans. Stream span covers the entire stream
lifetime with a galaxy.event_count tag (per-event spans would dominate
the trace volume at 50k tags / 1Hz; PR 6.2 owns per-event metrics).
- TracedGalaxyDataWriter — galaxy.write spans tagged with
galaxy.tag_count, galaxy.secured_write_count (split between FreeAccess
/Operate vs Tune/Configure/VerifiedWrite, computed only when a listener
is recording so the hot path stays free), galaxy.success_count.
- TracedGalaxyHierarchySource — galaxy.get_hierarchy spans tagged with
galaxy.object_count.
GalaxyDriver.BuildProductionRuntimeAsync wraps the production seams in
the decorators. The driver itself doesn't take an OpenTelemetry package
dependency — System.Diagnostics.ActivitySource is in-box; the host
process picks the listener.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
31 lines
1.2 KiB
C#
31 lines
1.2 KiB
C#
using MxGateway.Contracts.Proto.Galaxy;
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using ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Runtime;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Browse;
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/// <summary>
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/// PR 6.1 — Decorator that emits one <see cref="System.Diagnostics.Activity"/> span
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/// per <c>GetHierarchy</c> RPC. <c>galaxy.object_count</c> on the span lets ops
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/// correlate slow Discover passes with Galaxy size without instrumenting the
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/// discoverer's translation step.
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/// </summary>
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internal sealed class TracedGalaxyHierarchySource(IGalaxyHierarchySource inner, string clientName) : IGalaxyHierarchySource
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{
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public async Task<IReadOnlyList<GalaxyObject>> GetHierarchyAsync(CancellationToken cancellationToken)
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{
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using var activity = GalaxyTelemetry.ActivitySource.StartActivity("galaxy.get_hierarchy");
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activity?.SetTag("galaxy.client", clientName);
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try
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{
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var hierarchy = await inner.GetHierarchyAsync(cancellationToken).ConfigureAwait(false);
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activity?.SetTag("galaxy.object_count", hierarchy.Count);
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return hierarchy;
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}
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catch (Exception ex)
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{
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activity.RecordError(ex);
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throw;
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}
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}
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}
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