How to get observable gauge value using DiagnosticsClient?

Question

Here is another part of the problem with code sample:

.Net - how to parse histogram metrics using TraceEvent?

I have observable metrics (gauges) to read. if i run dotnet-counters i get values from these metrics once a sec.

The dotnet-counters is built upon DiagnosticsClient - same as what I use.

How can I "observe" an observable instrument via DiagnosticsClient ?

Answer 1

Thanks to the Microsoft Diagnostics project contributors the answer is here (need to set refresh interval): https://github.com/dotnet/diagnostics/issues/4727#issuecomment-2184907527

List<EventPipeProvider> providers = new()
{
    new EventPipeProvider("System.Diagnostics.Metrics", EventLevel.Verbose, keywords: -1, arguments: new Dictionary<string, string>
    {
        ["Metrics"] = "MyApp",
        ["RefreshInterval"] = "1",
        ["MaxTimeSeries"] = "1000",
        ["MaxHistograms"] = "10",
    }),
};