Application insights logger lightup

AzureIntegration.sln

@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26228.9
+VisualStudioVersion = 15.0.26412.1
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.AzureAppServicesIntegration", "src\Microsoft.AspNetCore.AzureAppServicesIntegration\Microsoft.AspNetCore.AzureAppServicesIntegration.csproj", "{5916BEB5-0969-469B-976C-A392E015DFAC}"
 EndProject
@@ -33,7 +33,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Web.Xdt.Extension
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.AzureAppServices.SiteExtension", "src\Microsoft.AspNetCore.AzureAppServices.SiteExtension\Microsoft.AspNetCore.AzureAppServices.SiteExtension.csproj", "{1CE2D76B-39E6-46C0-8F6F-C63E370955A9}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ApplicationInsightsJavaScriptSnippetTest", "test\ApplicationInsightsJavaScriptSnippetTest\ApplicationInsightsJavaScriptSnippetTest.csproj", "{0899A101-E451-40A4-81B0-7AA18202C25D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.ApplicationInsights.HostingStartup.Tests", "test\Microsoft.AspNetCore.ApplicationInsights.HostingStartup.Tests\Microsoft.AspNetCore.ApplicationInsights.HostingStartup.Tests.csproj", "{0899A101-E451-40A4-81B0-7AA18202C25D}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

build/dependencies.props

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <AspNetCoreVersion>2.0.0-preview1-*</AspNetCoreVersion>
     <AspNetIntegrationTestingVersion>0.4.0-*</AspNetIntegrationTestingVersion>
-    <AppInsightsVersion>2.0.0</AppInsightsVersion>
+    <AppInsightsVersion>2.1.0-beta2</AppInsightsVersion>
     <CoreFxVersion>4.3.0</CoreFxVersion>
     <InternalAspNetCoreSdkVersion>2.0.0-*</InternalAspNetCoreSdkVersion>
     <MoqVersion>4.7.1</MoqVersion>

sample/ApplicationInsightsHostingStartupSample/ApplicationInsightsHostingStartupSample.csproj

@@ -11,6 +11,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="$(AspNetCoreVersion)" />

sample/ApplicationInsightsHostingStartupSample/CurrentResponseTelemetryChannel.cs

@@ -0,0 +1,37 @@
+using System;
+using Microsoft.ApplicationInsights.Channel;
+using Microsoft.ApplicationInsights.DataContracts;
+using Microsoft.AspNetCore.Http;
+
+namespace IISSample
+{
+    public class CurrentResponseTelemetryChannel : ITelemetryChannel
+    {
+        private readonly HttpResponse _response;
+
+        public CurrentResponseTelemetryChannel(HttpResponse response)
+        {
+            _response = response;
+        }
+
+        public void Dispose()
+        {
+        }
+
+        public void Send(ITelemetry item)
+        {
+            if (item is TraceTelemetry traceTelemetry)
+            {
+                _response.WriteAsync(traceTelemetry.Message + Environment.NewLine).GetAwaiter().GetResult();
+            }
+        }
+
+        public void Flush()
+        {
+
+        }
+
+        public bool? DeveloperMode { get; set; }
+        public string EndpointAddress { get; set; }
+    }
+}

sample/ApplicationInsightsHostingStartupSample/Startup.cs

@@ -4,6 +4,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using Microsoft.ApplicationInsights.Extensibility;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Http;
@@ -20,13 +21,39 @@ public void ConfigureServices(IServiceCollection services)
             services.AddMvc();
         }
 
-        public void Configure(IApplicationBuilder app, ILoggerFactory loggerfactory)
+        public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory, IServiceProvider serviceProvider)
         {
-            loggerfactory.AddConsole(LogLevel.Debug);
+            loggerFactory.AddConsole(LogLevel.Debug);
 
-            var logger = loggerfactory.CreateLogger("Requests");
+            var logger = loggerFactory.CreateLogger("Requests");
 
             app.UseMvcWithDefaultRoute();
+            app.Map("/log", logApp => logApp.Run(async (context) =>
+            {
+                TelemetryConfiguration.Active.TelemetryChannel = new CurrentResponseTelemetryChannel(context.Response);
+
+                var systemLogger = loggerFactory.CreateLogger("System.Namespace");
+                systemLogger.LogTrace("System trace log");
+                systemLogger.LogInformation("System information log");
+                systemLogger.LogWarning("System warning log");
+
+                var microsoftLogger = loggerFactory.CreateLogger("Microsoft.Namespace");
+                microsoftLogger.LogTrace("Microsoft trace log");
+                microsoftLogger.LogInformation("Microsoft information log");
+                microsoftLogger.LogWarning("Microsoft warning log");
+
+                var customLogger = loggerFactory.CreateLogger("Custom.Namespace");
+                customLogger.LogTrace("Custom trace log");
+                customLogger.LogInformation("Custom information log");
+                customLogger.LogWarning("Custom warning log");
+
+                var specificLogger = loggerFactory.CreateLogger("Specific.Namespace");
+                specificLogger.LogTrace("Specific trace log");
+                specificLogger.LogInformation("Specific information log");
+                specificLogger.LogWarning("Specific warning log");
+
+                TelemetryConfiguration.Active.TelemetryChannel = null;
+            }));
             app.Run(async (context) =>
             {
                 logger.LogDebug("Received request: " + context.Request.Method + " " + context.Request.Path);

sample/ApplicationInsightsHostingStartupSample/appsettings.json

@@ -4,8 +4,15 @@
   },
   "Logging": {
     "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Warning"
+    "Debug": {
+      "LogLevel": {
+        "Default": "Warning"
+      }
+    },
+    "Console": {
+      "LogLevel": {
+        "Default": "Warning"
+      }
     }
   }
 }

sample/ApplicationInsightsHostingStartupSample/home/site/diagnostics/ApplicationInsights.settings.json

@@ -0,0 +1,11 @@
+{
+  "Logging": {
+    "Microsoft.ApplicationInsights.AspNetCore.Logging.ApplicationInsightsLoggerProvider": {
+      "LogLevel": {
+        "Microsoft": "Information",
+        "Specific": "Trace",
+        "Application": "Trace"
+      }
+    }
+  }
+}

sample/AzureAppServicesHostingStartupSample/AzureAppServicesHostingStartupSample.csproj

@@ -9,6 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="$(AspNetCoreVersion)" />
   </ItemGroup>

src/Microsoft.AspNetCore.ApplicationInsights.HostingStartup/ApplicationInsightsLoggerStartupFilter.cs

@@ -0,0 +1,27 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+
+namespace Microsoft.AspNetCore.ApplicationInsights.HostingStartup
+{
+    internal class ApplicationInsightsLoggerStartupFilter : IStartupFilter
+    {
+        private readonly Func<string, LogLevel, bool> _noFilter = (s, level) => true;
+
+        public Action<IApplicationBuilder> Configure(Action<IApplicationBuilder> next)
+        {
+            return builder =>
+            {
+                var loggerFactory = builder.ApplicationServices.GetService<ILoggerFactory>();
+                // We need to disable filtering on logger, filtering would be done by LoggerFactory
+                loggerFactory.AddApplicationInsights(builder.ApplicationServices, _noFilter);
+                next(builder);
+            };
+        }
+    }
+}

src/Microsoft.AspNetCore.ApplicationInsights.HostingStartup/ApplicationInsightsStartupLoader.cs

@@ -1,8 +1,14 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 
 [assembly: HostingStartup(typeof(Microsoft.AspNetCore.ApplicationInsights.HostingStartup.ApplicationInsightsHostingStartup))]
@@ -17,22 +23,60 @@ namespace Microsoft.AspNetCore.ApplicationInsights.HostingStartup
     /// </summary>
     public class ApplicationInsightsHostingStartup : IHostingStartup
     {
+        private const string ApplicationInsightsLoggerFactory = "Microsoft.ApplicationInsights.AspNetCore.Logging.ApplicationInsightsLoggerProvider";
+        private const string ApplicationInsightsSettingsFile = "ApplicationInsights.settings.json";
+
+        private static readonly KeyValuePair<string, string>[] _defaultLoggingLevels = {
+            new KeyValuePair<string, string>("Microsoft", "Warning"),
+            new KeyValuePair<string, string>("System", "Warning"),
+            new KeyValuePair<string, string>("Default", "Information")
+        };
+
         /// <summary>
         /// Calls UseApplicationInsights
         /// </summary>
         /// <param name="builder"></param>
         public void Configure(IWebHostBuilder builder)
         {
+            builder.ConfigureAppConfiguration((context, configurationBuilder) => ConfigureLogging(configurationBuilder));
             builder.UseApplicationInsights();
+
             builder.ConfigureServices(InitializeServices);
         }
 
+        private static void ConfigureLogging(IConfigurationBuilder configurationBuilder)
+        {
+            // Skip adding default rules when debugger is attached
+            // we want to send all events to VS
+            if (!Debugger.IsAttached)
+            {
+                configurationBuilder.AddInMemoryCollection(GetDefaultLoggingSettings());
+            }
+
+            var home = Environment.GetEnvironmentVariable("HOME");
+            if (!string.IsNullOrEmpty(home))
+            {
+                var settingsFile = Path.Combine(home, "site", "diagnostics", ApplicationInsightsSettingsFile);
+                configurationBuilder.AddJsonFile(settingsFile, optional: true);
+            }
+        }
+
+        private static KeyValuePair<string, string>[] GetDefaultLoggingSettings()
+        {
+            return _defaultLoggingLevels.Select(pair =>
+                {
+                    var key = $"Logging:{ApplicationInsightsLoggerFactory}:LogLevel:{pair.Key}";
+                    return new KeyValuePair<string, string>(key, pair.Value);
+                }).ToArray();
+        }
+
         /// <summary>
         /// Adds the Javascript <see cref="TagHelperComponent"/> to the <see cref="IServiceCollection"/>.
         /// </summary>
         /// <param name="services">The <see cref="IServiceCollection"/> associated with the application.</param>
         private void InitializeServices(IServiceCollection services)
         {
+            services.AddSingleton<IStartupFilter, ApplicationInsightsLoggerStartupFilter>();
             services.AddSingleton<ITagHelperComponent, JavaScriptSnippetTagHelperComponent>();
         }
     }

src/Microsoft.AspNetCore.ApplicationInsights.HostingStartup/Microsoft.AspNetCore.ApplicationInsights.HostingStartup.csproj

@@ -15,6 +15,7 @@
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="$(AppInsightsVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Razor.Runtime" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="$(AspNetCoreVersion)" />
   </ItemGroup>
 
 </Project>

test/Microsoft.AspNetCore.ApplicationInsights.HostingStartup.Tests/ApplicationInsightsFunctionalTest.cs

@@ -0,0 +1,66 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.IO;
+using Microsoft.Extensions.Logging.Testing;
+using Xunit.Abstractions;
+
+namespace ApplicationInsightsJavaScriptSnippetTest
+{
+    public class ApplicationInsightsFunctionalTest : LoggedTest
+    {
+        public ApplicationInsightsFunctionalTest(ITestOutputHelper output) : base(output)
+        {
+        }
+
+        protected static string GetApplicationPath()
+        {
+            var current = new DirectoryInfo(AppContext.BaseDirectory);
+            while (current != null)
+            {
+                if (File.Exists(Path.Combine(current.FullName, "AzureIntegration.sln")))
+                {
+                    break;
+                }
+                current = current.Parent;
+            }
+
+            if (current == null)
+            {
+                throw new InvalidOperationException("Could not find the solution directory");
+            }
+
+            return Path.GetFullPath(Path.Combine(current.FullName, "sample", "ApplicationInsightsHostingStartupSample"));
+        }
+
+        protected static bool PreservePublishedApplicationForDebugging
+        {
+            get
+            {
+                var deletePublishedFolder = Environment.GetEnvironmentVariable("ASPNETCORE_DELETEPUBLISHEDFOLDER");
+
+                if (string.Equals("false", deletePublishedFolder, StringComparison.OrdinalIgnoreCase)
+                    || string.Equals("0", deletePublishedFolder, StringComparison.OrdinalIgnoreCase))
+                {
+                    // preserve the published folder and do not delete it
+                    return true;
+                }
+
+                // do not preserve the published folder and delete it
+                return false;
+            }
+        }
+
+        protected static string GetCurrentBuildConfiguration()
+        {
+            var configuration = "Debug";
+            if (string.Equals(Environment.GetEnvironmentVariable("Configuration"), "Release", StringComparison.OrdinalIgnoreCase))
+            {
+                configuration = "Release";
+            }
+
+            return configuration;
+        }
+    }
+}