[Shim] .NET Framework - Support ConnStr from ApplicationInsights.config

WEB/Src/Web/Web/ApplicationInsightsHttpModule.cs

@@ -4,6 +4,7 @@
     using System.Web;
     using Microsoft.ApplicationInsights.Extensibility;
     using Microsoft.ApplicationInsights.Web.Extensions;
+    using Microsoft.ApplicationInsights.Web.Implementation;
 
     /// <summary>
     /// Platform agnostic module for web application instrumentation.
@@ -50,6 +51,19 @@ public void Init(HttpApplication context)
                     System.Diagnostics.Debug.WriteLine("Performing first-time initialization");
 
                     sharedTelemetryConfiguration = TelemetryConfiguration.CreateDefault();
+
+                    // Read connection string from applicationinsights.config
+                    string connectionString = ApplicationInsightsConfigurationReader.GetConnectionString();
+                    if (!string.IsNullOrEmpty(connectionString))
+                    {
+                        sharedTelemetryConfiguration.ConnectionString = connectionString;
+                        // TODO: Log - $"ConnectionString loaded from config: {connectionString}"
+                    }
+                    else
+                    {
+                        // TODO: Log - "No ConnectionString found in applicationinsights.config"
+                    }
+
                     sharedTelemetryConfiguration.ConfigureOpenTelemetryBuilder(
                         builder => builder.UseApplicationInsightsAspNetTelemetry());
 

WEB/Src/Web/Web/Implementation/ApplicationInsightsConfigurationReader.cs

@@ -0,0 +1,111 @@
+namespace Microsoft.ApplicationInsights.Web.Implementation
+{
+    using System;
+    using System.IO;
+    using System.Xml.Linq;
+
+    /// <summary>
+    /// Reads connection string from ApplicationInsights.config file.
+    /// </summary>
+    internal static class ApplicationInsightsConfigurationReader
+    {
+        private const string ConfigFileName = "ApplicationInsights.config";
+        private static readonly XNamespace XmlNamespace = "http://schemas.microsoft.com/ApplicationInsights/2013/Settings";
+
+        /// <summary>
+        /// Reads the connection string from ApplicationInsights.config file.
+        /// </summary>
+        /// <returns>The connection string if found; otherwise, null.</returns>
+        public static string GetConnectionString()
+        {
+            string configPath = GetConfigFilePath();
+
+            if (configPath == null)
+            {
+                return null;
+            }
+
+            try
+            {
+                // Ensure config file actually exists
+                if (!File.Exists(configPath))
+                {
+                    WebEventSource.Log.ApplicationInsightsConfigNotFound(configPath);
+                    return null;
+                }
+
+                return ReadConnectionStringFromConfig(configPath);
+            }
+            catch (FileNotFoundException)
+            {
+                WebEventSource.Log.ApplicationInsightsConfigNotFound(configPath);
+            }
+            catch (DirectoryNotFoundException)
+            {
+                WebEventSource.Log.ApplicationInsightsConfigNotFound(configPath);
+            }
+            catch (IOException)
+            {
+                WebEventSource.Log.ApplicationInsightsConfigNotFound(configPath);
+            }
+            catch (UnauthorizedAccessException)
+            {
+                WebEventSource.Log.ApplicationInsightsConfigReadError("UnauthorizedAccessException reading config file");
+            }
+            catch (System.Security.SecurityException)
+            {
+                WebEventSource.Log.ApplicationInsightsConfigReadError("SecurityException reading config file");
+            }
+            catch (Exception ex)
+            {
+                WebEventSource.Log.ApplicationInsightsConfigReadError(ex.ToString());
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Gets the full path to the ApplicationInsights.config file.
+        /// </summary>
+        /// <returns>The full path to the config file, or null if not found.</returns>
+        private static string GetConfigFilePath()
+        {
+            try
+            {
+                // Config file should be in the base directory of the app domain
+                return Path.Combine(AppDomain.CurrentDomain.BaseDirectory, ConfigFileName);
+            }
+            catch (System.Security.SecurityException)
+            {
+                WebEventSource.Log.ApplicationInsightsConfigReadError("SecurityException accessing AppDomain.CurrentDomain.BaseDirectory");
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Reads the connection string from the XML configuration file.
+        /// </summary>
+        /// <param name="configPath">The path to the config file.</param>
+        /// <returns>The connection string if found; otherwise, null.</returns>
+        private static string ReadConnectionStringFromConfig(string configPath)
+        {
+            XDocument xml = XDocument.Load(configPath);
+            XElement root = xml.Element(XmlNamespace + "ApplicationInsights");
+
+            if (root != null)
+            {
+                XElement connectionStringElement = root.Element(XmlNamespace + "ConnectionString");
+
+                if (connectionStringElement != null && !string.IsNullOrWhiteSpace(connectionStringElement.Value))
+                {
+                    string connectionString = connectionStringElement.Value.Trim();
+                    WebEventSource.Log.ApplicationInsightsConfigLoaded(configPath);
+                    return connectionString;
+                }
+            }
+
+            WebEventSource.Log.ApplicationInsightsConfigConnectionStringNotFound(configPath);
+            return null;
+        }
+    }
+}

WEB/Src/Web/Web/Implementation/WebEventSource.cs

@@ -540,6 +540,54 @@ public void NoHttpApplicationWarning(string appDomainName = "Incorrect")
                 this.applicationNameProvider.Name);
         }
 
+        [Event(
+            55,
+            Message = "ApplicationInsights.config not found at path: {0}",
+            Level = EventLevel.Informational)]
+        public void ApplicationInsightsConfigNotFound(string path, string appDomainName = "Incorrect")
+        {
+            this.WriteEvent(
+                55,
+                path ?? "NULL",
+                this.applicationNameProvider.Name);
+        }
+
+        [Event(
+            56,
+            Message = "ApplicationInsights.config loaded successfully from: {0}",
+            Level = EventLevel.Informational)]
+        public void ApplicationInsightsConfigLoaded(string path, string appDomainName = "Incorrect")
+        {
+            this.WriteEvent(
+                56,
+                path ?? "NULL",
+                this.applicationNameProvider.Name);
+        }
+
+        [Event(
+            57,
+            Message = "Failed to read ApplicationInsights.config. Error: {0}",
+            Level = EventLevel.Warning)]
+        public void ApplicationInsightsConfigReadError(string error, string appDomainName = "Incorrect")
+        {
+            this.WriteEvent(
+                57,
+                error ?? "NULL",
+                this.applicationNameProvider.Name);
+        }
+
+        [Event(
+            58,
+            Message = "ConnectionString not found in ApplicationInsights.config at path: {0}",
+            Level = EventLevel.Warning)]
+        public void ApplicationInsightsConfigConnectionStringNotFound(string path, string appDomainName = "Incorrect")
+        {
+            this.WriteEvent(
+                58,
+                path ?? "NULL",
+                this.applicationNameProvider.Name);
+        }
+
         /// <summary>
         /// Keywords for the PlatformEventSource. Those keywords should match keywords in Core.
         /// </summary>

WEB/Src/Web/Web/applicationinsights.config.sample

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ApplicationInsights xmlns="http://schemas.microsoft.com/ApplicationInsights/2013/Settings">
+  <ConnectionString>InstrumentationKey=00000000-0000-0000-0000-000000000000;IngestionEndpoint=https://your-ingestion-endpoint.applicationinsights.azure.com/</ConnectionString>
+</ApplicationInsights>

WEB/Src/Web/Web/net462/ApplicationInsights.config.install.xdt

@@ -1,42 +1,4 @@
 <ApplicationInsights xdt:Transform="SetAttributes" xmlns="http://schemas.microsoft.com/ApplicationInsights/2013/Settings" xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
-
-  <TelemetryInitializers xdt:Transform="InsertIfMissing">
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.WebTestTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.SyntheticUserAgentTelemetryInitializer, Microsoft.AI.Web">
-      <!-- Extended list of bots:
-            search|spider|crawl|Bot|Monitor|BrowserMob|BingPreview|PagePeeker|WebThumb|URL2PNG|ZooShot|GomezA|Google SketchUp|Read Later|KTXN|KHTE|Keynote|Pingdom|AlwaysOn|zao|borg|oegp|silk|Xenu|zeal|NING|htdig|lycos|slurp|teoma|voila|yahoo|Sogou|CiBra|Nutch|Java|JNLP|Daumoa|Genieo|ichiro|larbin|pompos|Scrapy|snappy|speedy|vortex|favicon|indexer|Riddler|scooter|scraper|scrubby|WhatWeb|WinHTTP|voyager|archiver|Icarus6j|mogimogi|Netvibes|altavista|charlotte|findlinks|Retreiver|TLSProber|WordPress|wsr-agent|http client|Python-urllib|AppEngine-Google|semanticdiscovery|facebookexternalhit|web/snippet|Google-HTTP-Java-Client-->
-      <Filters>search|spider|crawl|Bot|Monitor|AlwaysOn</Filters>
-    </Add>
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.ClientIpHeaderTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.AzureAppServiceRoleNameFromHostNameHeaderInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.OperationNameTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.OperationCorrelationTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.UserTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.AuthenticatedUserIdTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.AccountIdTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.SessionTelemetryInitializer, Microsoft.AI.Web" />
-  </TelemetryInitializers>
-
-  <TelemetryModules xdt:Transform="InsertIfMissing">
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.RequestTrackingTelemetryModule, Microsoft.AI.Web">
-      <Handlers>
-        <!-- 
-        Add entries here to filter out additional handlers: 
-
-        NOTE: handler configuration will be lost upon NuGet upgrade.
-        -->
-        <Add>Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.RequestDataHttpHandler</Add>
-        <Add>System.Web.StaticFileHandler</Add>
-        <Add>System.Web.Handlers.AssemblyResourceLoader</Add>
-        <Add>System.Web.Optimization.BundleHandler</Add>
-        <Add>System.Web.Script.Services.ScriptHandlerFactory</Add>
-        <Add>System.Web.Handlers.TraceHandler</Add>
-        <Add>System.Web.Services.Discovery.DiscoveryRequestHandler</Add>
-        <Add>System.Web.HttpDebugHandler</Add>
-      </Handlers>
-    </Add>
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.ExceptionTrackingTelemetryModule, Microsoft.AI.Web" />
-    <Add xdt:Transform="InsertIfMissing" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.AspNetDiagnosticTelemetryModule, Microsoft.AI.Web" />
-  </TelemetryModules>
-  <ApplicationIdProvider xdt:Transform="InsertIfMissing" Type="Microsoft.ApplicationInsights.Extensibility.Implementation.ApplicationId.ApplicationInsightsApplicationIdProvider, Microsoft.ApplicationInsights"/>
+  <!-- Learn more about Application Insights configuration with ApplicationInsights.config here: http://go.microsoft.com/fwlink/?LinkID=513840 -->
+  <ConnectionString xdt:Transform="InsertIfMissing"></ConnectionString>
 </ApplicationInsights>

WEB/Src/Web/Web/net462/ApplicationInsights.config.transform

@@ -1,3 +1,9 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8" ?>
 <ApplicationInsights xmlns="http://schemas.microsoft.com/ApplicationInsights/2013/Settings">
-</ApplicationInsights>
+  <!--
+  Learn more about Application Insights configuration with ApplicationInsights.config here: 
+  http://go.microsoft.com/fwlink/?LinkID=513840
+
+  Note: If not present, please add <ConnectionString>Your Connection String</ConnectionString> to the top of this file.
+  -->
+</ApplicationInsights>

WEB/Src/Web/Web/net462/ApplicationInsights.config.uninstall.xdt

@@ -1,25 +1,3 @@
 <ApplicationInsights xmlns="http://schemas.microsoft.com/ApplicationInsights/2013/Settings" xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
-
-  <TelemetryInitializers>
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.WebTestTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.SyntheticUserAgentTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.ClientIpHeaderTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.OperationNameTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.OperationCorrelationTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.UserTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.AuthenticatedUserIdTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.AccountIdTelemetryInitializer, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.SessionTelemetryInitializer, Microsoft.AI.Web" />
-  </TelemetryInitializers>
-  <TelemetryInitializers xdt:Transform="Remove" xdt:Locator="Condition(count(*)=0)"/>
-
-  <TelemetryModules>
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.RequestTrackingTelemetryModule, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.ExceptionTrackingTelemetryModule, Microsoft.AI.Web" />
-    <Add xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Web.AspNetDiagnosticTelemetryModule, Microsoft.AI.Web" />
-  </TelemetryModules>
-  <TelemetryModules xdt:Transform="Remove" xdt:Locator="Condition(count(*)=0)"/>
-
-  <ApplicationIdProvider xdt:Transform="Remove" xdt:Locator="Match(Type)" Type="Microsoft.ApplicationInsights.Extensibility.Implementation.ApplicationId.ApplicationInsightsApplicationIdProvider, Microsoft.ApplicationInsights"/>
-
-</ApplicationInsights>
+  <ConnectionString xdt:Transform="Remove" />
+</ApplicationInsights>