[AzureMonitorExporter] Add Az.Namespace to Dependency Type. (Azure#35645)

* Add Az.Namespace as Dependency Type.

* Fix UI

* Fix tests

* Comment

Author: rajkumar-rangaraj

sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/src/Customizations/Models/RemoteDependencyData.cs

@@ -66,10 +66,16 @@ public RemoteDependencyData(int version, Activity activity, ref ActivityTagsProc
                     break;
             }
 
-            if (activity.Kind == ActivityKind.Internal && activity.Parent != null)
+            if (activity.Kind == ActivityKind.Internal)
             {
                 Type = "InProc";
             }
+            else
+            {
+                // The Azure SDK sets az.namespace with its resource provider information.
+                // When ActivityKind is not internal and az.namespace is present, set the value of Type to az.namespace.
+                Type = activityTagsProcessor.UnMappedTags.GetAzNameSpace() ?? Type;
+            }
 
             Properties = new ChangeTrackingDictionary<string, string>();
             Measurements = new ChangeTrackingDictionary<string, double>();

sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/src/Internals/AzMonListExtensions.cs

@@ -382,5 +382,10 @@ internal static string GetDefaultDbPort(string? dbSystem)
 
             return "Unknown";
         }
+
+        internal static string? GetAzNameSpace(this AzMonList tagObjects)
+        {
+            return AzMonList.GetTagValue(ref tagObjects, SemanticConventions.AttributeAzureNameSpace)?.ToString();
+        }
     }
 }

sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter/tests/Azure.Monitor.OpenTelemetry.Exporter.Tests/RemoteDependencyDataTests.cs

@@ -57,25 +57,33 @@ public void ValidateDBDependencyType(string dbSystem)
         }
 
         [Fact]
-        public void DependencyTypeisSetToInProcForInternalSpanWithParent()
+        public void DependencyTypeisSetToInProcForInternalSpan()
         {
             using ActivitySource activitySource = new ActivitySource(ActivitySourceName);
-            using var parentActivity = activitySource.StartActivity("ParentActivity", ActivityKind.Internal);
-            using var childActivity = activitySource.StartActivity("ChildActivity", ActivityKind.Internal);
+            using var activity = activitySource.StartActivity("Activity", ActivityKind.Internal);
 
-            Assert.NotNull(parentActivity);
-            var activityTagsProcessorParent = TraceHelper.EnumerateActivityTags(parentActivity);
+            Assert.NotNull(activity);
+            var activityTagsProcessor = TraceHelper.EnumerateActivityTags(activity);
 
-            var remoteDependencyDataTypeForParent = new RemoteDependencyData(2, parentActivity, ref activityTagsProcessorParent).Type;
+            var remoteDependencyDataType = new RemoteDependencyData(2, activity, ref activityTagsProcessor).Type;
 
-            Assert.Null(remoteDependencyDataTypeForParent);
+            Assert.Equal("InProc", remoteDependencyDataType);
+        }
 
-            Assert.NotNull(childActivity);
-            var activityTagsProcessorChild = TraceHelper.EnumerateActivityTags(childActivity);
+        [Fact]
+        public void DependencyTypeisSetToAzNamespaceValueForNonInternalSpan()
+        {
+            using ActivitySource activitySource = new ActivitySource(ActivitySourceName);
+            using var activity = activitySource.StartActivity("Activity", ActivityKind.Client);
+            activity?.AddTag("az.namespace", "DemoAzureResource");
 
-            var remoteDependencyDataTypeForChild = new RemoteDependencyData(2, childActivity, ref activityTagsProcessorChild).Type;
+            Assert.NotNull(activity);
+            var activityTagsProcessor = TraceHelper.EnumerateActivityTags(activity);
+
+            var remoteDependencyData = new RemoteDependencyData(2, activity, ref activityTagsProcessor);
 
-            Assert.Equal("InProc", remoteDependencyDataTypeForChild);
+            Assert.Equal("DemoAzureResource", remoteDependencyData.Type);
+            Assert.Equal("DemoAzureResource", remoteDependencyData.Properties["az.namespace"]);
         }
 
         [Fact]