Enable BreakingChangeAnalysis only when running in Azure (#6307) (#6401)

Author: pragnagopa

src/WebJobs.Script.WebHost/DependencyInjection/DependencyValidator/DependencyValidator.cs

@@ -48,7 +48,7 @@ private static ExpectedDependencyBuilder CreateExpectedDependencies()
                 .Expect<FileMonitoringService>()
                 .Expect<WorkerConsoleLogService>()
                 .Expect<FunctionInvocationDispatcherShutdownManager>()
-                .Expect<ChangeAnalysisService>()
+                .Optional<ChangeAnalysisService>()
                 .Optional<FunctionsScaleMonitorService>()
                 .Optional<FuncAppFileProvisioningService>() // Used by powershell.
                 .Optional<JobHostService>() // Missing when host is offline.

src/WebJobs.Script.WebHost/WebScriptHostBuilderExtension.cs

@@ -101,7 +101,12 @@ public static IHostBuilder AddWebScriptHost(this IHostBuilder builder, IServiceP
                     }
                     services.TryAddSingleton<IScaleMetricsRepository, TableStorageScaleMetricsRepository>();
 
-                    services.AddSingleton<IChangeAnalysisStateProvider, BlobChangeAnalysisStateProvider>();
+                    if (environment.IsWindowsAzureManagedHosting() || environment.IsLinuxAzureManagedHosting())
+                    {
+                        // Enable breaking change analysis only when hosted in Azure
+                        services.AddSingleton<IChangeAnalysisStateProvider, BlobChangeAnalysisStateProvider>();
+                        services.AddSingleton<IHostedService, ChangeAnalysisService>();
+                    }
 
                     // Make sure the registered IHostIdProvider is used
                     IHostIdProvider provider = rootServiceProvider.GetService<IHostIdProvider>();
@@ -118,7 +123,6 @@ public static IHostBuilder AddWebScriptHost(this IHostBuilder builder, IServiceP
 
                     // Hosted services
                     services.TryAddEnumerable(ServiceDescriptor.Singleton<IHostedService, FileMonitoringService>());
-                    services.AddSingleton<IHostedService, ChangeAnalysisService>();
 
                     ConfigureRegisteredBuilders(services, rootServiceProvider);
                 });