Log to Azure Monitor

- Export logs to Azure Monitor.
- Group OpenTelemetry package updates.

.github/dependabot.yml

@@ -11,7 +11,10 @@ updates:
 - package-ecosystem: nuget
   directory: "/"
   groups:
-    polly:
+    OpenTelemetry:
+      patterns:
+        - OpenTelemetry*
+    Polly:
       patterns:
         - Polly*
     xunit:

src/LondonTravel.Site/Extensions/ILoggingBuilderExtensions.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Martin Costello, 2017. All rights reserved.
 // Licensed under the Apache 2.0 license. See the LICENSE file in the project root for full license information.
 
+using Azure.Monitor.OpenTelemetry.Exporter;
 using OpenTelemetry.Logs;
 
 namespace MartinCostello.LondonTravel.Site.Extensions;
@@ -24,6 +25,11 @@ public static ILoggingBuilder AddTelemetry(this ILoggingBuilder builder)
             p.IncludeFormattedMessage = true;
             p.IncludeScopes = true;
 
+            if (TelemetryExtensions.IsAzureMonitorConfigured())
+            {
+                p.AddAzureMonitorLogExporter();
+            }
+
             if (TelemetryExtensions.IsOtlpCollectorConfigured())
             {
                 p.AddOtlpExporter();

src/LondonTravel.Site/Extensions/TelemetryExtensions.cs

@@ -6,7 +6,6 @@
 using AspNet.Security.OAuth.Amazon;
 using AspNet.Security.OAuth.Apple;
 using AspNet.Security.OAuth.GitHub;
-using Azure.Identity;
 using Azure.Monitor.OpenTelemetry.AspNetCore;
 using Microsoft.AspNetCore.Authentication.Facebook;
 using Microsoft.AspNetCore.Authentication.Google;
@@ -86,7 +85,7 @@ public static void AddTelemetry(this IServiceCollection services, IWebHostEnviro
     internal static bool IsOtlpCollectorConfigured()
         => !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("OTEL_EXPORTER_OTLP_ENDPOINT"));
 
-    private static bool IsAzureMonitorConfigured()
+    internal static bool IsAzureMonitorConfigured()
         => !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("APPLICATIONINSIGHTS_CONNECTION_STRING"));
 
     private static void EnrichHttpActivity(Activity activity, HttpRequestMessage request)