Support internal and client spans from cosmos db

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## VNext
 - [Upgrade System.Diagnostics.PerformanceCounter to version 6.0.0 to address CVE-2021-24112](https://github.com/microsoft/ApplicationInsights-dotnet/pull/2707)
+- [Report internal dependencies from Cosmos SDK as InProc and align with Cosmos SDK EventSource changes](https://github.com/microsoft/ApplicationInsights-dotnet/pull/2712)
 
 ## Version 2.22.0-beta1
 - Update endpoint redirect header name for QuickPulse module to v2

WEB/Src/DependencyCollector/DependencyCollector.Tests/Implementation/AzureSdkDiagnosticListenerTest.cs

@@ -1397,6 +1397,38 @@ public void AzureCosmosDbSpansAreCollectedWithExtraAttributes()
             }
         }
 
+        [TestMethod]
+        public void AzureCosmosDbInternalSpansHaveInProcType()
+        {
+            using (var listener = new DiagnosticListener("Azure.Cosmos"))
+            using (var module = new DependencyTrackingTelemetryModule())
+            {
+                module.Initialize(this.configuration);
+
+                Activity sendActivity = new Activity("Azure.Cosmos.ReadItems")
+                    .AddTag("kind", "internal")
+                    .AddTag("net.peer.name", "my.documents.azure.com")
+                    .AddTag("db.name", "database")
+                    .AddTag("db.operation", "ReadItems")
+                    .AddTag("db.cosmosdb.container", "container")
+                    .AddTag("az.namespace", "Microsoft.DocumentDB");
+
+                listener.StartActivity(sendActivity, null);
+                sendActivity.AddTag("db.cosmosdb.status_code", "200");
+                listener.StopActivity(sendActivity, null);
+
+                var telemetry = this.sentItems.Last();
+                DependencyTelemetry dependency = telemetry as DependencyTelemetry;
+                Assert.AreEqual("container | ReadItems", dependency.Name);
+                Assert.AreEqual("my.documents.azure.com | database", dependency.Target);
+                Assert.AreEqual("200", dependency.ResultCode);
+                Assert.AreEqual("InProc | Microsoft.DocumentDB", dependency.Type);
+                Assert.AreEqual("database", dependency.Properties["db.name"]);
+                Assert.AreEqual("ReadItems", dependency.Properties["db.operation"]);
+                Assert.AreEqual("my.documents.azure.com", dependency.Properties["net.peer.name"]);
+            }
+        }
+
 #if !NET452
         [TestMethod]
         public void AzureCosmosDbSpansAreCollectedWithLogs()
@@ -1546,7 +1578,7 @@ private class ApplicationInsightsLink
         class CosmosDbEventSource : EventSource
         {
             private CosmosDbEventSource()
-                : base("Azure.Cosmos_foo")
+                : base("Azure-Cosmos-Operation-Request-Diagnostics")
             {
             }
 

WEB/Src/DependencyCollector/DependencyCollector/Implementation/AzureSdk/AzureSdkDiagnosticListenerSubscriber.cs

@@ -15,7 +15,7 @@ internal sealed class AzureSdkDiagnosticListenerSubscriber : DiagnosticSourceLis
         public AzureSdkDiagnosticListenerSubscriber(TelemetryConfiguration configuration) : base(configuration)
         {
             // listen to Cosmos EventSource only - other logs can be sent using ILogger
-            this.logsListener = new AzureSdkEventListener(this.Client, EventLevel.Informational, "Azure.Cosmos");
+            this.logsListener = new AzureSdkEventListener(this.Client, EventLevel.Informational, "Azure-Cosmos-Operation-Request-Diagnostics");
             this.Client.Context.GetInternalContext().SdkVersion = SdkVersionUtils.GetSdkVersion("rdd" + RddSource.DiagnosticSourceListenerAzure + ":");
         }
 

WEB/Src/DependencyCollector/DependencyCollector/Implementation/AzureSdk/AzureSdkDiagnosticsEventHandler.cs

@@ -18,6 +18,8 @@ internal class AzureSdkDiagnosticsEventHandler : DiagnosticsEventHandlerBase
         // Microsoft.DocumentDB is an Azure Resource Provider namespace. We use it as a dependency span as-is
         // and portal will take care about visualizing it properly.
         private const string CosmosDBResourceProviderNs = "Microsoft.DocumentDB";
+        private const string ClientCosmosDbDependencyType = CosmosDBResourceProviderNs;
+        private const string InternalCosmosDbDependencyType = "InProc | " + CosmosDBResourceProviderNs;
 #if NET452
         private static readonly DateTimeOffset EpochStart = new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc);
 #endif
@@ -102,8 +104,11 @@ public override void OnEvent(KeyValuePair<string, object> evnt, DiagnosticListen
                                 dependency.SetOperationDetail(evnt.Value.GetType().FullName, evnt.Value);
                             }
                         }
-                        else if (dependency.Type == CosmosDBResourceProviderNs)
+                        else if (dependency.Type == ClientCosmosDbDependencyType || dependency.Type == InternalCosmosDbDependencyType)
                         {
+                            // Internal cosmos spans come from SDK in Gateway mode - they are
+                            // logical operations. AppMap then uses HTTP spans to build cosmos node and 
+                            // metrics on the edge
                             SetCosmosDbProperties(currentActivity, dependency);
                         }
                     }