Replace reporting method with instrument

Author: sakno

src/cluster/DotNext.Net.Cluster/Net/Multiplexing/IStreamMetrics.cs

@@ -1,8 +1,8 @@
-using System.Diagnostics;
+using System.Diagnostics.Metrics;
 
 namespace DotNext.Net.Multiplexing;
 
 internal interface IStreamMetrics
 {
-    static abstract void ChangeStreamCount(long delta, in TagList measurementTags);
+    static abstract UpDownCounter<long> StreamCount { get; }
 }

src/cluster/DotNext.Net.Cluster/Net/Multiplexing/MultiplexedClient.Metrics.cs

@@ -1,4 +1,3 @@
-using System.Diagnostics;
 using System.Diagnostics.Metrics;
 
 namespace DotNext.Net.Multiplexing;
@@ -13,6 +12,5 @@ static MultiplexedClient()
         StreamCount = meter.CreateUpDownCounter<long>("streams-count", description: "Number of Streams");
     }
 
-    static void IStreamMetrics.ChangeStreamCount(long delta, in TagList measurementTags)
-        => StreamCount.Add(delta, measurementTags);
+    static UpDownCounter<long> IStreamMetrics.StreamCount => StreamCount;
 }

src/cluster/DotNext.Net.Cluster/Net/Multiplexing/MultiplexedListener.Metrics.cs

@@ -18,6 +18,5 @@ static MultiplexedListener()
 
     private readonly TagList measurementTags;
 
-    static void IStreamMetrics.ChangeStreamCount(long delta, in TagList measurementTags)
-        => StreamCount.Add(delta, measurementTags);
+    static UpDownCounter<long> IStreamMetrics.StreamCount => StreamCount;
 }

src/cluster/DotNext.Net.Cluster/Net/Multiplexing/Multiplexer.cs

@@ -32,5 +32,5 @@ internal abstract class Multiplexer<T>(
 {
     public required TagList MeasurementTags;
 
-    protected void ChangeStreamCount(long delta = 1) => T.ChangeStreamCount(delta, MeasurementTags);
+    protected void ChangeStreamCount(long delta = 1) => T.StreamCount.Add(delta, MeasurementTags);
 }