minor clean up

Author: samlam

src/OpenTelemetry/Metrics/AggregatorStore.cs

@@ -24,20 +24,20 @@ internal sealed class AggregatorStore
 {
     private static readonly string MetricPointCapHitFixMessage = "Consider opting in for the experimental SDK feature to emit all the throttled metrics under the overflow attribute by setting env variable OTEL_DOTNET_EXPERIMENTAL_METRICS_EMIT_OVERFLOW_ATTRIBUTE = true. You could also modify instrumentation to reduce the number of unique key/value pair combinations. Or use Views to drop unwanted tags. Or use MeterProviderBuilder.SetMaxMetricPointsPerMetricStream to set higher limit.";
     private static readonly Comparison<KeyValuePair<string, object>> DimensionComparisonDelegate = (x, y) => x.Key.CompareTo(y.Key);
-    private static readonly Dictionary<(string, string), double[]> DefaultHistogramBoundMappings = new()
+    private static readonly IReadOnlyDictionary<(string, string), double[]> DefaultHistogramBoundMappings = new Dictionary<(string, string), double[]>()
     {
-        { ("Microsoft.AspNetCore.RateLimiting", "aspnetcore.rate_limiting.request_lease.duration"), Metric.DefaultHistogramBoundsSeconds },
-        { ("Microsoft.AspNetCore.RateLimiting", "aspnetcore.rate_limiting.request.time_in_queue"), Metric.DefaultHistogramBoundsSeconds },
-        { ("System.Net.Http", "http.client.connection.duration"), Metric.DefaultHistogramBoundsSeconds },
-        { ("System.Net.Http", "http.client.request.duration"), Metric.DefaultHistogramBoundsSeconds },
-        { ("System.Net.Http", "http.client.request.time_in_queue"), Metric.DefaultHistogramBoundsSeconds },
         { ("Microsoft.AspNetCore.Hosting", "http.server.request.duration"), Metric.DefaultHistogramBoundsSeconds },
+        { ("Microsoft.AspNetCore.Http.Connections", "signalr.server.connection.duration"), Metric.DefaultHistogramBoundsSeconds },
+        { ("Microsoft.AspNetCore.RateLimiting", "aspnetcore.rate_limiting.request.time_in_queue"), Metric.DefaultHistogramBoundsSeconds },
+        { ("Microsoft.AspNetCore.RateLimiting", "aspnetcore.rate_limiting.request_lease.duration"), Metric.DefaultHistogramBoundsSeconds },
         { ("Microsoft.AspNetCore.Server.Kestrel", "kestrel.connection.duration"), Metric.DefaultHistogramBoundsSeconds },
         { ("Microsoft.AspNetCore.Server.Kestrel", "kestrel.tls_handshake.duration"), Metric.DefaultHistogramBoundsSeconds },
-        { ("Microsoft.AspNetCore.Http.Connections", "signalr.server.connection.duration"), Metric.DefaultHistogramBoundsSeconds },
-        { ("System.Net.NameResolution", "dns.lookups.duration"), Metric.DefaultHistogramBoundsSeconds },
         { ("OpenTelemetry.Instrumentation.AspNetCore", "http.server.duration"), Metric.DefaultHistogramBoundsSeconds },
         { ("OpenTelemetry.Instrumentation.Http", "http.client.duration"), Metric.DefaultHistogramBoundsSeconds },
+        { ("System.Net.Http", "http.client.connection.duration"), Metric.DefaultHistogramBoundsSeconds },
+        { ("System.Net.Http", "http.client.request.duration"), Metric.DefaultHistogramBoundsSeconds },
+        { ("System.Net.Http", "http.client.request.time_in_queue"), Metric.DefaultHistogramBoundsSeconds },
+        { ("System.Net.NameResolution", "dns.lookups.duration"), Metric.DefaultHistogramBoundsSeconds },
     };
 
     private readonly object lockZeroTags = new();

test/OpenTelemetry.Tests/Metrics/AggregatorTestsBase.cs

@@ -239,18 +239,18 @@ public void MultiThreadedHistogramUpdateAndSnapShotTest()
     }
 
     [Theory]
+    [InlineData("Microsoft.AspNetCore.Hosting", "http.server.request.duration")]
+    [InlineData("Microsoft.AspNetCore.Http.Connections", "signalr.server.connection.duration")]
     [InlineData("Microsoft.AspNetCore.RateLimiting", "aspnetcore.rate_limiting.request_lease.duration")]
     [InlineData("Microsoft.AspNetCore.RateLimiting", "aspnetcore.rate_limiting.request.time_in_queue")]
-    [InlineData("System.Net.Http", "http.client.connection.duration")]
-    [InlineData("System.Net.Http", "http.client.request.duration")]
-    [InlineData("System.Net.Http", "http.client.request.time_in_queue")]
-    [InlineData("Microsoft.AspNetCore.Hosting", "http.server.request.duration")]
     [InlineData("Microsoft.AspNetCore.Server.Kestrel", "kestrel.connection.duration")]
     [InlineData("Microsoft.AspNetCore.Server.Kestrel", "kestrel.tls_handshake.duration")]
-    [InlineData("Microsoft.AspNetCore.Http.Connections", "signalr.server.connection.duration")]
-    [InlineData("System.Net.NameResolution", "dns.lookups.duration")]
     [InlineData("OpenTelemetry.Instrumentation.AspNetCore", "http.server.duration")]
     [InlineData("OpenTelemetry.Instrumentation.Http", "http.client.duration")]
+    [InlineData("System.Net.Http", "http.client.connection.duration")]
+    [InlineData("System.Net.Http", "http.client.request.duration")]
+    [InlineData("System.Net.Http", "http.client.request.time_in_queue")]
+    [InlineData("System.Net.NameResolution", "dns.lookups.duration")]
     public void HistogramBucketsDefaultUpdatesForSecondsTest(string meterName, string instrumentName)
     {
         RunTest(meterName, instrumentName, unit: "s");