stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.Provcache/ProvcacheTelemetry.Metrics.Latency.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Diagnostics;
+using System.Diagnostics.Metrics;
+
+namespace StellaOps.Provcache;
+
+public static partial class ProvcacheTelemetry
+{
+    /// <summary>
+    /// Record operation latency.
+    /// </summary>
+    /// <param name="operation">The operation type.</param>
+    /// <param name="duration">The operation duration.</param>
+    public static void RecordLatency(string operation, TimeSpan duration)
+    {
+        if (string.IsNullOrWhiteSpace(operation))
+            return;
+
+        var seconds = duration.TotalSeconds;
+        if (double.IsNaN(seconds) || double.IsInfinity(seconds) || seconds < 0)
+            seconds = 0d;
+
+        var tags = new TagList
+        {
+            { "operation", operation }
+        };
+
+        _latencyHistogram.Record(seconds, tags);
+    }
+
+    /// <summary>
+    /// Record cache entry size.
+    /// </summary>
+    /// <param name="bytes">The size in bytes.</param>
+    public static void RecordEntrySize(long bytes)
+    {
+        if (bytes < 0)
+            return;
+
+        _entrySizeHistogram.Record(bytes);
+    }
+}