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Workaround EventListener bug when consuming metrics #2104

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Apr 18, 2023
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8 changes: 8 additions & 0 deletions src/TelemetryConsumption/EventListenerService.cs
Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,14 @@ private void OnNonUserEvent(EventWrittenEventArgs eventData)
{
if (eventData.EventId == -1)
{
if (!ReferenceEquals(eventData.EventSource, _eventSource))
{
// Workaround for https://github.com/dotnet/runtime/issues/31927
// EventCounters are published to all EventListeners, regardless of
// which EventSource providers a listener is enabled for.
return;
}

// Throwing an exception here would crash the process
if (eventData.EventName != "EventCounters" ||
eventData.Payload?.Count != 1 ||
Expand Down