Microsoft.Extensions.Diagnostics.ResourceMonitoring meter name changed to ResourceMonitoring

[gitmln]

Description

The following commit cbcef5c changed the name of Microsoft.Extensions.Diagnostics.ResourceMonitoring main meter.
The correct one is Microsoft.Extensions.Diagnostics.ResourceMonitoring. The current value (for v8.8) is "ResourceMonitoring".

The problem is with nameof expression meterFactory.Create(nameof(Microsoft.Extensions.Diagnostics.ResourceMonitoring));
Please check https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/nameof When the operand is a type or a namespace, the produced name isn't fully qualified

I provide a PR that fixes this bug #5403

Reproduction Steps

AddMeeter("Microsoft.Extensions.Diagnostics.ResourceMonitoring")
Run any sample program. ResourceMonitoring Metrics are no longer produced.

Expected behavior

AddMeeter("Microsoft.Extensions.Diagnostics.ResourceMonitoring") gives ResourceMonitoring metrics.

Actual behavior

AddMeeter("Microsoft.Extensions.Diagnostics.ResourceMonitoring") gives no ResourceMonitoring metrics.

Regression?

Worked in < v8.8

Known Workarounds

No response

Configuration

No response

Other information

No response

[gitmln]

The obvious working workaround for now is to use AddMeeter("ResourceMonitoring")

[RussKie]

@evgenyfedorov2 please triage

[joperezr]

We should fix this as it is a regression that breaks dashboards/alerts. Might be patch-worthy. Going on a tangent for a bit, but can we make sure we add tests that catch these type of regressions so this won't break in the future?