[BUG] `Unsupported TelemetryType: 'Event'` in `DocumentStream.CreateFilters`

[bgrainger]

Library name and version

Azure.Monitor.OpenTelemetry.AspNetCore 1.4.0-beta.1

Describe the bug

If the Live Metrics blade is viewed in Application Insights, an ArgumentOutOfRangeException is thrown (and caught) in the Azure Monitor SDK.

Expected behavior

No exception thrown for known telemetry types.

Actual behavior

An Unsupported TelemetryType: 'Event' ArgumentOutOfRangeException is thrown in Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.DocumentStream.CreateFilters

This exception is caught and ignored, but seems to indicate unimplemented functionality in the Azure Monitor SDK.

Call stack

Azure.Monitor.OpenTelemetry.Exporter.dll!Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.DocumentStream.CreateFilters(out Azure.Monitor.OpenTelemetry.LiveMetrics.Models.CollectionConfigurationError[] errors) Line 131	C#
Azure.Monitor.OpenTelemetry.Exporter.dll!Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.DocumentStream.DocumentStream(Azure.Monitor.OpenTelemetry.LiveMetrics.Models.DocumentStreamInfo info, out Azure.Monitor.OpenTelemetry.LiveMetrics.Models.CollectionConfigurationError[] errors, float? initialRequestQuota, float? initialDependencyQuota, float? initialExceptionQuota, float? initialEventQuota, float? initialTraceQuota, float? maxRequestQuota, float? maxDependencyQuota, float? maxExceptionQuota, float? maxEventQuota, float? maxTraceQuota, float? quotaAccrualRatePerSec) Line 40	C#
Azure.Monitor.OpenTelemetry.Exporter.dll!Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.CollectionConfiguration.CreateDocumentStreams(System.Collections.Generic.IEnumerable<Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.DocumentStream> previousDocumentStreams, out Azure.Monitor.OpenTelemetry.LiveMetrics.Models.CollectionConfigurationError[] errors) Line 113	C#
Azure.Monitor.OpenTelemetry.Exporter.dll!Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.CollectionConfiguration.CollectionConfiguration(Azure.Monitor.OpenTelemetry.LiveMetrics.Models.CollectionConfigurationInfo info, out Azure.Monitor.OpenTelemetry.LiveMetrics.Models.CollectionConfigurationError[] errors, System.Collections.Generic.IEnumerable<Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.DocumentStream> previousDocumentStreams) Line 45	C#
Azure.Monitor.OpenTelemetry.Exporter.dll!Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.LiveMetricsClientManager.RefreshConfigurationOnEtagChange(Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.QuickPulseResponse response) Line 410	C#
Azure.Monitor.OpenTelemetry.Exporter.dll!Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.LiveMetricsClientManager.OnPing() Line 364	C#
Azure.Monitor.OpenTelemetry.Exporter.dll!Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.LiveMetricsClientManager.Run() Line 500	C#

Reproduction Steps

• Install and configure Azure.Monitor.OpenTelemetry.AspNetCore as per https://learn.microsoft.com/en-us/azure/azure-monitor/app/opentelemetry-dotnet-migrate?tabs=aspnetcore#enable-opentelemetry
• Set up a Connection String for an Application Insights instance
• Run your application under the VS debugger
• In the Application Insights instance, open the Live Metrics blade
• An Unsupported TelemetryType: 'Event' ArgumentOutOfRangeException is thrown in Azure.Monitor.OpenTelemetry.LiveMetrics.Internals.Filtering.DocumentStream.CreateFilters

Environment

Windows 11 25H2

❯ dotnet --info
.NET SDK:
 Version:           9.0.306
 Commit:            cc9947ca66
 Workload version:  9.0.300-manifests.4f997495
 MSBuild version:   17.14.28+09c1be848

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.26200
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\9.0.306\

.NET workloads installed:
 [android]
   Installation Source: SDK 9.0.300, VS 17.14.36623.8
   Manifest Version:    35.0.105/9.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.android\35.0.105\WorkloadManifest.json
   Install Type:              Msi

 [ios]
   Installation Source: SDK 9.0.300
   Manifest Version:    26.0.9752/9.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.ios\26.0.9752\WorkloadManifest.json
   Install Type:              Msi

Configured to use loose manifests when installing new manifests.

Host:
  Version:      9.0.10
  Architecture: x64
  Commit:       e1f19886fe

.NET SDKs installed:
  8.0.415 [C:\Program Files\dotnet\sdk]
  9.0.111 [C:\Program Files\dotnet\sdk]
  9.0.205 [C:\Program Files\dotnet\sdk]
  9.0.306 [C:\Program Files\dotnet\sdk]

[github-actions]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @harsimar @mattsains-msft @rajkumar-rangaraj @xiang17.