Added support for generic host based IWebHostBuilder (#1580)
- This adds an implementation of IWebHostBuilder as a facade over the IHostBuilder.
This removes the 2 container issue by executing the Startup.ConfigureServies and Startup.ConfigureContainer inline as part of building the IHostBuilder.
- The implementation is highly compatible implementation since it exposes the same IWebHostBuilder interface.
Existing extensions mostly work.
- There are some caveats with this approach.
- Injecting services into Startup is not extremely constrained to the
services availble on HostBuilderContext. This includes the IHostingEnvironment
and the IConfiguration.
- IStartup is broken when using this pattern because it isn't composable.
- The IStartupConfigureServicesFilter and IStartupConfigureContainer The before
and after filters added in 2.1 are also broken because there's a single container (it could maybe be fixed by downcasting and doing something specific on the GenericHostBuilder instance).
- Calling into IWebHostBuilder.Build will throw a NotSupportedException since
this implementation is just a facade over the IHostBuilder.
This commit is contained in:
David Fowler
GitHub
Родитель
d7b9fd4807
Коммит
cfe9b26a34
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@ -1,10 +1,9 @@
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using System;
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using System.Net;
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using System.Threading.Tasks;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Http;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Hosting;
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using Microsoft.AspNetCore.Hosting;
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namespace GenericWebHost
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{
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@ -19,22 +18,20 @@ namespace GenericWebHost
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config.AddJsonFile("appsettings.json", optional: true);
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config.AddCommandLine(args);
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})
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.ConfigureServices((hostContext, services) =>
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{
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})
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.UseFakeServer()
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.ConfigureWebHost((hostContext, app) =>
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.ConfigureWebHost(builder =>
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{
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builder.Configure(app =>
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{
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app.Run(async (context) =>
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{
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await context.Response.WriteAsync("Hello World!");
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});
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});
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})
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.UseConsoleLifetime()
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.Build();
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var s = host.Services;
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await host.RunAsync();
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}
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}
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@ -1,43 +0,0 @@
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Text;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Hosting.Internal;
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using Microsoft.AspNetCore.Http;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.ObjectPool;
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namespace GenericWebHost
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{
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public static class WebHostExtensions
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{
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public static IHostBuilder ConfigureWebHost(this IHostBuilder builder, Action<HostBuilderContext, IApplicationBuilder> configureApp)
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{
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return builder.ConfigureServices((bulderContext, services) =>
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{
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services.Configure<WebHostServiceOptions>(options =>
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{
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options.ConfigureApp = configureApp;
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});
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services.AddHostedService<WebHostService>();
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var listener = new DiagnosticListener("Microsoft.AspNetCore");
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services.AddSingleton<DiagnosticListener>(listener);
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services.AddSingleton<DiagnosticSource>(listener);
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services.AddTransient<IHttpContextFactory, HttpContextFactory>();
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services.AddScoped<IMiddlewareFactory, MiddlewareFactory>();
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// Conjure up a RequestServices
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services.AddTransient<IStartupFilter, AutoRequestServicesStartupFilter>();
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services.AddTransient<IServiceProviderFactory<IServiceCollection>, DefaultServiceProviderFactory>();
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// Ensure object pooling is available everywhere.
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services.AddSingleton<ObjectPoolProvider, DefaultObjectPoolProvider>();
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});
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}
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}
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}
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@ -1,62 +0,0 @@
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using System;
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using System.Diagnostics;
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using System.Threading;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder.Internal;
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using Microsoft.AspNetCore.Hosting.Internal;
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using Microsoft.AspNetCore.Hosting.Server;
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using Microsoft.AspNetCore.Hosting.Server.Features;
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using Microsoft.AspNetCore.Http;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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namespace GenericWebHost
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{
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internal class WebHostService : IHostedService
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{
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public WebHostService(IOptions<WebHostServiceOptions> options, IServiceProvider services, HostBuilderContext hostBuilderContext, IServer server,
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ILogger<WebHostService> logger, DiagnosticListener diagnosticListener, IHttpContextFactory httpContextFactory)
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{
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Options = options?.Value ?? throw new System.ArgumentNullException(nameof(options));
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if (Options.ConfigureApp == null)
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{
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throw new ArgumentException(nameof(Options.ConfigureApp));
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}
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Services = services ?? throw new ArgumentNullException(nameof(services));
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HostBuilderContext = hostBuilderContext ?? throw new ArgumentNullException(nameof(hostBuilderContext));
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Server = server ?? throw new ArgumentNullException(nameof(server));
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Logger = logger ?? throw new ArgumentNullException(nameof(logger));
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DiagnosticListener = diagnosticListener ?? throw new ArgumentNullException(nameof(diagnosticListener));
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HttpContextFactory = httpContextFactory ?? throw new ArgumentNullException(nameof(httpContextFactory));
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}
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public WebHostServiceOptions Options { get; }
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public IServiceProvider Services { get; }
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public HostBuilderContext HostBuilderContext { get; }
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public IServer Server { get; }
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public ILogger<WebHostService> Logger { get; }
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public DiagnosticListener DiagnosticListener { get; }
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public IHttpContextFactory HttpContextFactory { get; }
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public Task StartAsync(CancellationToken cancellationToken)
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{
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Server.Features.Get<IServerAddressesFeature>()?.Addresses.Add("http://localhost:5000");
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var builder = new ApplicationBuilder(Services, Server.Features);
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Options.ConfigureApp(HostBuilderContext, builder);
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var app = builder.Build();
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var httpApp = new HostingApplication(app, Logger, DiagnosticListener, HttpContextFactory);
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return Server.StartAsync(httpApp, cancellationToken);
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}
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public Task StopAsync(CancellationToken cancellationToken)
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{
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return Server.StopAsync(cancellationToken);
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}
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}
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}
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@ -1,11 +0,0 @@
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using System;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.Extensions.Hosting;
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namespace GenericWebHost
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{
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public class WebHostServiceOptions
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{
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public Action<HostBuilderContext, IApplicationBuilder> ConfigureApp { get; internal set; }
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}
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}
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@ -0,0 +1,24 @@
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// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System.Threading;
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namespace Microsoft.AspNetCore.Hosting.Internal
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{
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internal class GenericWebHostApplicationLifetime : IApplicationLifetime
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{
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private readonly Microsoft.Extensions.Hosting.IApplicationLifetime _applicationLifetime;
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public GenericWebHostApplicationLifetime(Microsoft.Extensions.Hosting.IApplicationLifetime applicationLifetime)
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{
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_applicationLifetime = applicationLifetime;
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}
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public CancellationToken ApplicationStarted => _applicationLifetime.ApplicationStarted;
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public CancellationToken ApplicationStopping => _applicationLifetime.ApplicationStopping;
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public CancellationToken ApplicationStopped => _applicationLifetime.ApplicationStopped;
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public void StopApplication() => _applicationLifetime.StopApplication();
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}
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}
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@ -0,0 +1,376 @@
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// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.ExceptionServices;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting.Builder;
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using Microsoft.AspNetCore.Http;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.DependencyInjection.Extensions;
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.ObjectPool;
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namespace Microsoft.AspNetCore.Hosting.Internal
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{
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internal class GenericWebHostBuilder : IWebHostBuilder, ISupportsStartup, ISupportsUseDefaultServiceProvider
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{
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private readonly IHostBuilder _builder;
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private readonly IConfiguration _config;
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private readonly object _startupKey = new object();
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private AggregateException _hostingStartupErrors;
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private HostingStartupWebHostBuilder _hostingStartupWebHostBuilder;
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public GenericWebHostBuilder(IHostBuilder builder)
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{
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_builder = builder;
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_config = new ConfigurationBuilder()
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.AddEnvironmentVariables(prefix: "ASPNETCORE_")
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.Build();
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_builder.ConfigureHostConfiguration(config =>
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{
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config.AddConfiguration(_config);
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// We do this super early but still late enough that we can process the configuration
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// wired up by calls to UseSetting
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ExecuteHostingStartups();
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});
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// IHostingStartup needs to be executed before any direct methods on the builder
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// so register these callbacks first
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_builder.ConfigureAppConfiguration((context, configurationBuilder) =>
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{
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if (_hostingStartupWebHostBuilder != null)
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{
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var webhostContext = GetWebHostBuilderContext(context);
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_hostingStartupWebHostBuilder.ConfigureAppConfiguration(webhostContext, configurationBuilder);
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}
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});
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_builder.ConfigureServices((context, services) =>
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{
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if (_hostingStartupWebHostBuilder != null)
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{
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var webhostContext = GetWebHostBuilderContext(context);
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_hostingStartupWebHostBuilder.ConfigureServices(webhostContext, services);
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}
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});
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_builder.ConfigureServices((context, services) =>
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{
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var webhostContext = GetWebHostBuilderContext(context);
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var webHostOptions = (WebHostOptions)context.Properties[typeof(WebHostOptions)];
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// Add the IHostingEnvironment and IApplicationLifetime from Microsoft.AspNetCore.Hosting
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services.AddSingleton(webhostContext.HostingEnvironment);
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services.AddSingleton<IApplicationLifetime, GenericWebHostApplicationLifetime>();
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services.Configure<GenericWebHostServiceOptions>(options =>
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{
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// Set the options
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options.WebHostOptions = webHostOptions;
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// Store and forward any startup errors
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options.HostingStartupExceptions = _hostingStartupErrors;
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});
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services.AddHostedService<GenericWebHostService>();
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// REVIEW: This is bad since we don't own this type. Anybody could add one of these and it would mess things up
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// We need to flow this differently
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var listener = new DiagnosticListener("Microsoft.AspNetCore");
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services.TryAddSingleton<DiagnosticListener>(listener);
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services.TryAddSingleton<DiagnosticSource>(listener);
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services.TryAddSingleton<IHttpContextFactory, HttpContextFactory>();
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services.TryAddScoped<IMiddlewareFactory, MiddlewareFactory>();
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services.TryAddSingleton<IApplicationBuilderFactory, ApplicationBuilderFactory>();
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// Conjure up a RequestServices
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services.TryAddTransient<IStartupFilter, AutoRequestServicesStartupFilter>();
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// Ensure object pooling is available everywhere.
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services.TryAddSingleton<ObjectPoolProvider, DefaultObjectPoolProvider>();
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// Support UseStartup(assemblyName)
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if (!string.IsNullOrEmpty(webHostOptions.StartupAssembly))
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{
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try
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{
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var startupType = StartupLoader.FindStartupType(webHostOptions.StartupAssembly, webhostContext.HostingEnvironment.EnvironmentName);
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UseStartup(startupType, context, services);
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}
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catch (Exception ex) when (webHostOptions.CaptureStartupErrors)
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{
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var capture = ExceptionDispatchInfo.Capture(ex);
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services.Configure<GenericWebHostServiceOptions>(options =>
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{
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options.ConfigureApplication = app =>
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{
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// Throw if there was any errors initializing startup
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capture.Throw();
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};
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});
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}
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}
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});
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}
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private void ExecuteHostingStartups()
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{
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var webHostOptions = new WebHostOptions(_config, Assembly.GetEntryAssembly()?.GetName().Name);
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if (webHostOptions.PreventHostingStartup)
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{
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return;
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}
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var exceptions = new List<Exception>();
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_hostingStartupWebHostBuilder = new HostingStartupWebHostBuilder(this);
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// Execute the hosting startup assemblies
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foreach (var assemblyName in webHostOptions.GetFinalHostingStartupAssemblies().Distinct(StringComparer.OrdinalIgnoreCase))
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{
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try
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{
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var assembly = Assembly.Load(new AssemblyName(assemblyName));
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foreach (var attribute in assembly.GetCustomAttributes<HostingStartupAttribute>())
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{
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var hostingStartup = (IHostingStartup)Activator.CreateInstance(attribute.HostingStartupType);
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hostingStartup.Configure(_hostingStartupWebHostBuilder);
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}
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}
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catch (Exception ex)
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{
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// Capture any errors that happen during startup
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exceptions.Add(new InvalidOperationException($"Startup assembly {assemblyName} failed to execute. See the inner exception for more details.", ex));
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}
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}
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if (exceptions.Count > 0)
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{
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_hostingStartupErrors = new AggregateException(exceptions);
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}
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}
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public IWebHost Build()
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{
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throw new NotSupportedException($"Building this implementation of {nameof(IWebHostBuilder)} is not supported.");
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}
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public IWebHostBuilder ConfigureAppConfiguration(Action<WebHostBuilderContext, IConfigurationBuilder> configureDelegate)
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{
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_builder.ConfigureAppConfiguration((context, builder) =>
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{
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var webhostBuilderContext = GetWebHostBuilderContext(context);
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configureDelegate(webhostBuilderContext, builder);
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});
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return this;
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}
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public IWebHostBuilder ConfigureServices(Action<IServiceCollection> configureServices)
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{
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return ConfigureServices((context, services) => configureServices(services));
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}
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public IWebHostBuilder ConfigureServices(Action<WebHostBuilderContext, IServiceCollection> configureServices)
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{
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_builder.ConfigureServices((context, builder) =>
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{
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var webhostBuilderContext = GetWebHostBuilderContext(context);
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configureServices(webhostBuilderContext, builder);
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});
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return this;
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}
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public IWebHostBuilder UseDefaultServiceProvider(Action<WebHostBuilderContext, ServiceProviderOptions> configure)
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{
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// REVIEW: This is a hack to change the builder with the HostBuilderContext in scope,
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// we're not actually using configuration here
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_builder.ConfigureAppConfiguration((context, _) =>
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{
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var webHostBuilderContext = GetWebHostBuilderContext(context);
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var options = new ServiceProviderOptions();
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configure(webHostBuilderContext, options);
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// This is only fine because this runs last
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_builder.UseServiceProviderFactory(new DefaultServiceProviderFactory(options));
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});
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return this;
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}
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public IWebHostBuilder UseStartup(Type startupType)
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{
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_builder.ConfigureServices((context, services) =>
|
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{
|
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UseStartup(startupType, context, services);
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});
|
||||
|
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return this;
|
||||
}
|
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|
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private void UseStartup(Type startupType, HostBuilderContext context, IServiceCollection services)
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{
|
||||
var webHostBuilderContext = GetWebHostBuilderContext(context);
|
||||
var webHostOptions = (WebHostOptions)context.Properties[typeof(WebHostOptions)];
|
||||
|
||||
ExceptionDispatchInfo startupError = null;
|
||||
object instance = null;
|
||||
ConfigureBuilder configureBuilder = null;
|
||||
|
||||
try
|
||||
{
|
||||
// We cannot support methods that return IServiceProvider as that is terminal and we need ConfigureServices to compose
|
||||
if (typeof(IStartup).IsAssignableFrom(startupType))
|
||||
{
|
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throw new NotSupportedException($"{typeof(IStartup)} isn't supported");
|
||||
}
|
||||
|
||||
instance = ActivatorUtilities.CreateInstance(new HostServiceProvider(webHostBuilderContext), startupType);
|
||||
context.Properties[_startupKey] = instance;
|
||||
|
||||
// Startup.ConfigureServices
|
||||
var configureServicesBuilder = StartupLoader.FindConfigureServicesDelegate(startupType, context.HostingEnvironment.EnvironmentName);
|
||||
var configureServices = configureServicesBuilder.Build(instance);
|
||||
|
||||
configureServices(services);
|
||||
|
||||
// REVIEW: We're doing this in the callback so that we have access to the hosting environment
|
||||
// Startup.ConfigureContainer
|
||||
var configureContainerBuilder = StartupLoader.FindConfigureContainerDelegate(startupType, context.HostingEnvironment.EnvironmentName);
|
||||
if (configureContainerBuilder.MethodInfo != null)
|
||||
{
|
||||
var containerType = configureContainerBuilder.GetContainerType();
|
||||
// Store the builder in the property bag
|
||||
_builder.Properties[typeof(ConfigureContainerBuilder)] = configureContainerBuilder;
|
||||
|
||||
var actionType = typeof(Action<,>).MakeGenericType(typeof(HostBuilderContext), containerType);
|
||||
|
||||
// Get the private ConfigureContainer method on this type then close over the container type
|
||||
var configureCallback = GetType().GetMethod(nameof(ConfigureContainer), BindingFlags.NonPublic | BindingFlags.Instance)
|
||||
.MakeGenericMethod(containerType)
|
||||
.CreateDelegate(actionType, this);
|
||||
|
||||
// _builder.ConfigureContainer<T>(ConfigureContainer);
|
||||
typeof(IHostBuilder).GetMethods().First(m => m.Name == nameof(IHostBuilder.ConfigureContainer))
|
||||
.MakeGenericMethod(containerType)
|
||||
.Invoke(_builder, new object[] { configureCallback });
|
||||
}
|
||||
|
||||
// Resolve Configure after calling ConfigureServices and ConfigureContainer
|
||||
configureBuilder = StartupLoader.FindConfigureDelegate(startupType, context.HostingEnvironment.EnvironmentName);
|
||||
}
|
||||
catch (Exception ex) when (webHostOptions.CaptureStartupErrors)
|
||||
{
|
||||
startupError = ExceptionDispatchInfo.Capture(ex);
|
||||
}
|
||||
|
||||
// Startup.Configure
|
||||
services.Configure<GenericWebHostServiceOptions>(options =>
|
||||
{
|
||||
options.ConfigureApplication = app =>
|
||||
{
|
||||
// Throw if there was any errors initializing startup
|
||||
startupError?.Throw();
|
||||
|
||||
// Execute Startup.Configure
|
||||
if (instance != null && configureBuilder != null)
|
||||
{
|
||||
configureBuilder.Build(instance)(app);
|
||||
}
|
||||
};
|
||||
});
|
||||
}
|
||||
|
||||
private void ConfigureContainer<TContainer>(HostBuilderContext context, TContainer container)
|
||||
{
|
||||
var instance = context.Properties[_startupKey];
|
||||
var builder = (ConfigureContainerBuilder)context.Properties[typeof(ConfigureContainerBuilder)];
|
||||
builder.Build(instance)(container);
|
||||
}
|
||||
|
||||
public IWebHostBuilder Configure(Action<IApplicationBuilder> configure)
|
||||
{
|
||||
_builder.ConfigureServices((context, services) =>
|
||||
{
|
||||
services.Configure<GenericWebHostServiceOptions>(options =>
|
||||
{
|
||||
options.ConfigureApplication = configure;
|
||||
});
|
||||
});
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
private WebHostBuilderContext GetWebHostBuilderContext(HostBuilderContext context)
|
||||
{
|
||||
if (!context.Properties.TryGetValue(typeof(WebHostBuilderContext), out var contextVal))
|
||||
{
|
||||
var options = new WebHostOptions(context.Configuration, Assembly.GetEntryAssembly()?.GetName().Name);
|
||||
var hostingEnvironment = new HostingEnvironment();
|
||||
hostingEnvironment.Initialize(context.HostingEnvironment.ContentRootPath, options);
|
||||
|
||||
var webHostBuilderContext = new WebHostBuilderContext
|
||||
{
|
||||
Configuration = context.Configuration,
|
||||
HostingEnvironment = hostingEnvironment
|
||||
};
|
||||
context.Properties[typeof(WebHostBuilderContext)] = webHostBuilderContext;
|
||||
context.Properties[typeof(WebHostOptions)] = options;
|
||||
return webHostBuilderContext;
|
||||
}
|
||||
|
||||
return (WebHostBuilderContext)contextVal;
|
||||
}
|
||||
|
||||
public string GetSetting(string key)
|
||||
{
|
||||
return _config[key];
|
||||
}
|
||||
|
||||
public IWebHostBuilder UseSetting(string key, string value)
|
||||
{
|
||||
_config[key] = value;
|
||||
return this;
|
||||
}
|
||||
|
||||
// This exists just so that we can use ActivatorUtilities.CreateInstance on the Startup class
|
||||
private class HostServiceProvider : IServiceProvider
|
||||
{
|
||||
private readonly WebHostBuilderContext _context;
|
||||
|
||||
public HostServiceProvider(WebHostBuilderContext context)
|
||||
{
|
||||
_context = context;
|
||||
}
|
||||
|
||||
public object GetService(Type serviceType)
|
||||
{
|
||||
// The implementation of the HostingEnvironment supports both interfaces
|
||||
if (serviceType == typeof(Microsoft.AspNetCore.Hosting.IHostingEnvironment) || serviceType == typeof(IHostingEnvironment))
|
||||
{
|
||||
return _context.HostingEnvironment;
|
||||
}
|
||||
|
||||
if (serviceType == typeof(IConfiguration))
|
||||
{
|
||||
return _context.Configuration;
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
// 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;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Internal
|
||||
{
|
||||
internal class GenericWebHostServiceOptions
|
||||
{
|
||||
public Action<IApplicationBuilder> ConfigureApplication { get; set; }
|
||||
|
||||
public WebHostOptions WebHostOptions { get; set; }
|
||||
|
||||
public AggregateException HostingStartupExceptions { get; set; }
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
// 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.Linq;
|
||||
using System.Reflection;
|
||||
using System.Runtime.InteropServices;
|
||||
using System.Threading;
|
||||
using System.Threading.Tasks;
|
||||
using Microsoft.AspNetCore.Builder;
|
||||
using Microsoft.AspNetCore.Hosting.Builder;
|
||||
using Microsoft.AspNetCore.Hosting.Server;
|
||||
using Microsoft.AspNetCore.Hosting.Server.Features;
|
||||
using Microsoft.AspNetCore.Hosting.Views;
|
||||
using Microsoft.AspNetCore.Http;
|
||||
using Microsoft.Extensions.Configuration;
|
||||
using Microsoft.Extensions.Hosting;
|
||||
using Microsoft.Extensions.Logging;
|
||||
using Microsoft.Extensions.Options;
|
||||
using Microsoft.Extensions.StackTrace.Sources;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Internal
|
||||
{
|
||||
internal class GenericWebHostService : IHostedService
|
||||
{
|
||||
public GenericWebHostService(IOptions<GenericWebHostServiceOptions> options,
|
||||
IServer server,
|
||||
ILogger<GenericWebHostService> logger,
|
||||
DiagnosticListener diagnosticListener,
|
||||
IHttpContextFactory httpContextFactory,
|
||||
IApplicationBuilderFactory applicationBuilderFactory,
|
||||
IEnumerable<IStartupFilter> startupFilters,
|
||||
IConfiguration configuration,
|
||||
IHostingEnvironment hostingEnvironment)
|
||||
{
|
||||
Options = options.Value;
|
||||
Server = server;
|
||||
Logger = logger;
|
||||
DiagnosticListener = diagnosticListener;
|
||||
HttpContextFactory = httpContextFactory;
|
||||
ApplicationBuilderFactory = applicationBuilderFactory;
|
||||
StartupFilters = startupFilters;
|
||||
Configuration = configuration;
|
||||
HostingEnvironment = hostingEnvironment;
|
||||
}
|
||||
|
||||
public GenericWebHostServiceOptions Options { get; }
|
||||
public IServer Server { get; }
|
||||
public ILogger<GenericWebHostService> Logger { get; }
|
||||
public DiagnosticListener DiagnosticListener { get; }
|
||||
public IHttpContextFactory HttpContextFactory { get; }
|
||||
public IApplicationBuilderFactory ApplicationBuilderFactory { get; }
|
||||
public IEnumerable<IStartupFilter> StartupFilters { get; }
|
||||
public IConfiguration Configuration { get; }
|
||||
public IHostingEnvironment HostingEnvironment { get; }
|
||||
|
||||
public async Task StartAsync(CancellationToken cancellationToken)
|
||||
{
|
||||
HostingEventSource.Log.HostStart();
|
||||
|
||||
var serverAddressesFeature = Server.Features?.Get<IServerAddressesFeature>();
|
||||
var addresses = serverAddressesFeature?.Addresses;
|
||||
if (addresses != null && !addresses.IsReadOnly && addresses.Count == 0)
|
||||
{
|
||||
var urls = Configuration[WebHostDefaults.ServerUrlsKey];
|
||||
if (!string.IsNullOrEmpty(urls))
|
||||
{
|
||||
serverAddressesFeature.PreferHostingUrls = WebHostUtilities.ParseBool(Configuration, WebHostDefaults.PreferHostingUrlsKey);
|
||||
|
||||
foreach (var value in urls.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries))
|
||||
{
|
||||
addresses.Add(value);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
RequestDelegate application = null;
|
||||
|
||||
try
|
||||
{
|
||||
Action<IApplicationBuilder> configure = Options.ConfigureApplication;
|
||||
|
||||
if (configure == null)
|
||||
{
|
||||
throw new InvalidOperationException($"No application configured. Please specify an application via IWebHostBuilder.UseStartup, IWebHostBuilder.Configure, or specifying the startup assembly via {nameof(WebHostDefaults.StartupAssemblyKey)} in the web host configuration.");
|
||||
}
|
||||
|
||||
var builder = ApplicationBuilderFactory.CreateBuilder(Server.Features);
|
||||
|
||||
foreach (var filter in StartupFilters.Reverse())
|
||||
{
|
||||
configure = filter.Configure(configure);
|
||||
}
|
||||
|
||||
configure(builder);
|
||||
|
||||
// Build the request pipeline
|
||||
application = builder.Build();
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
Logger.ApplicationError(ex);
|
||||
|
||||
if (!Options.WebHostOptions.CaptureStartupErrors)
|
||||
{
|
||||
throw;
|
||||
}
|
||||
|
||||
application = BuildErrorPageApplication(ex);
|
||||
}
|
||||
|
||||
var httpApplication = new HostingApplication(application, Logger, DiagnosticListener, HttpContextFactory);
|
||||
|
||||
await Server.StartAsync(httpApplication, cancellationToken);
|
||||
|
||||
if (addresses != null)
|
||||
{
|
||||
foreach (var address in addresses)
|
||||
{
|
||||
Logger.LogInformation("Now listening on: {address}", address);
|
||||
}
|
||||
}
|
||||
|
||||
if (Logger.IsEnabled(LogLevel.Debug))
|
||||
{
|
||||
foreach (var assembly in Options.WebHostOptions.GetFinalHostingStartupAssemblies())
|
||||
{
|
||||
Logger.LogDebug("Loaded hosting startup assembly {assemblyName}", assembly);
|
||||
}
|
||||
}
|
||||
|
||||
if (Options.HostingStartupExceptions != null)
|
||||
{
|
||||
foreach (var exception in Options.HostingStartupExceptions.InnerExceptions)
|
||||
{
|
||||
Logger.HostingStartupAssemblyError(exception);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private RequestDelegate BuildErrorPageApplication(Exception exception)
|
||||
{
|
||||
if (exception is TargetInvocationException tae)
|
||||
{
|
||||
exception = tae.InnerException;
|
||||
}
|
||||
|
||||
var showDetailedErrors = HostingEnvironment.IsDevelopment() || Options.WebHostOptions.DetailedErrors;
|
||||
|
||||
var model = new ErrorPageModel
|
||||
{
|
||||
RuntimeDisplayName = RuntimeInformation.FrameworkDescription
|
||||
};
|
||||
var systemRuntimeAssembly = typeof(System.ComponentModel.DefaultValueAttribute).GetTypeInfo().Assembly;
|
||||
var assemblyVersion = new AssemblyName(systemRuntimeAssembly.FullName).Version.ToString();
|
||||
var clrVersion = assemblyVersion;
|
||||
model.RuntimeArchitecture = RuntimeInformation.ProcessArchitecture.ToString();
|
||||
var currentAssembly = typeof(ErrorPage).GetTypeInfo().Assembly;
|
||||
model.CurrentAssemblyVesion = currentAssembly
|
||||
.GetCustomAttribute<AssemblyInformationalVersionAttribute>()
|
||||
.InformationalVersion;
|
||||
model.ClrVersion = clrVersion;
|
||||
model.OperatingSystemDescription = RuntimeInformation.OSDescription;
|
||||
|
||||
if (showDetailedErrors)
|
||||
{
|
||||
var exceptionDetailProvider = new ExceptionDetailsProvider(
|
||||
HostingEnvironment.ContentRootFileProvider,
|
||||
sourceCodeLineCount: 6);
|
||||
|
||||
model.ErrorDetails = exceptionDetailProvider.GetDetails(exception);
|
||||
}
|
||||
else
|
||||
{
|
||||
model.ErrorDetails = new ExceptionDetails[0];
|
||||
}
|
||||
|
||||
var errorPage = new ErrorPage(model);
|
||||
return context =>
|
||||
{
|
||||
context.Response.StatusCode = 500;
|
||||
context.Response.Headers["Cache-Control"] = "no-cache";
|
||||
return errorPage.ExecuteAsync(context);
|
||||
};
|
||||
}
|
||||
|
||||
public async Task StopAsync(CancellationToken cancellationToken)
|
||||
{
|
||||
try
|
||||
{
|
||||
await Server.StopAsync(cancellationToken);
|
||||
}
|
||||
finally
|
||||
{
|
||||
HostingEventSource.Log.HostStop();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,79 @@
|
|||
// 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.Extensions.Configuration;
|
||||
using Microsoft.Extensions.DependencyInjection;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Internal
|
||||
{
|
||||
// We use this type to capture calls to the IWebHostBuilder so the we can properly order calls to
|
||||
// to GenericHostWebHostBuilder.
|
||||
internal class HostingStartupWebHostBuilder : IWebHostBuilder, ISupportsStartup, ISupportsUseDefaultServiceProvider
|
||||
{
|
||||
private readonly GenericWebHostBuilder _builder;
|
||||
private Action<WebHostBuilderContext, IConfigurationBuilder> _configureConfiguration;
|
||||
private Action<WebHostBuilderContext, IServiceCollection> _configureServices;
|
||||
|
||||
public HostingStartupWebHostBuilder(GenericWebHostBuilder builder)
|
||||
{
|
||||
_builder = builder;
|
||||
}
|
||||
|
||||
public IWebHost Build()
|
||||
{
|
||||
throw new NotSupportedException($"Building this implementation of {nameof(IWebHostBuilder)} is not supported.");
|
||||
}
|
||||
|
||||
public IWebHostBuilder ConfigureAppConfiguration(Action<WebHostBuilderContext, IConfigurationBuilder> configureDelegate)
|
||||
{
|
||||
_configureConfiguration += configureDelegate;
|
||||
return this;
|
||||
}
|
||||
|
||||
public IWebHostBuilder ConfigureServices(Action<IServiceCollection> configureServices)
|
||||
{
|
||||
return ConfigureServices((context, services) => configureServices(services));
|
||||
}
|
||||
|
||||
public IWebHostBuilder ConfigureServices(Action<WebHostBuilderContext, IServiceCollection> configureServices)
|
||||
{
|
||||
_configureServices += configureServices;
|
||||
return this;
|
||||
}
|
||||
|
||||
public string GetSetting(string key) => _builder.GetSetting(key);
|
||||
|
||||
public IWebHostBuilder UseSetting(string key, string value)
|
||||
{
|
||||
_builder.UseSetting(key, value);
|
||||
return this;
|
||||
}
|
||||
|
||||
public void ConfigureServices(WebHostBuilderContext context, IServiceCollection services)
|
||||
{
|
||||
_configureServices?.Invoke(context, services);
|
||||
}
|
||||
|
||||
public void ConfigureAppConfiguration(WebHostBuilderContext context, IConfigurationBuilder builder)
|
||||
{
|
||||
_configureConfiguration?.Invoke(context, builder);
|
||||
}
|
||||
|
||||
public IWebHostBuilder UseDefaultServiceProvider(Action<WebHostBuilderContext, ServiceProviderOptions> configure)
|
||||
{
|
||||
return _builder.UseDefaultServiceProvider(configure);
|
||||
}
|
||||
|
||||
public IWebHostBuilder Configure(Action<IApplicationBuilder> configure)
|
||||
{
|
||||
return _builder.Configure(configure);
|
||||
}
|
||||
|
||||
public IWebHostBuilder UseStartup(Type startupType)
|
||||
{
|
||||
return _builder.UseStartup(startupType);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +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 Microsoft.AspNetCore.Builder;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Internal
|
||||
{
|
||||
internal interface ISupportsStartup
|
||||
{
|
||||
IWebHostBuilder Configure(Action<IApplicationBuilder> configure);
|
||||
IWebHostBuilder UseStartup(Type startupType);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
// 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.Extensions.DependencyInjection;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Internal
|
||||
{
|
||||
internal interface ISupportsUseDefaultServiceProvider
|
||||
{
|
||||
IWebHostBuilder UseDefaultServiceProvider(Action<WebHostBuilderContext, ServiceProviderOptions> configure);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
using System;
|
||||
using Microsoft.AspNetCore.Hosting;
|
||||
using Microsoft.AspNetCore.Hosting.Internal;
|
||||
|
||||
namespace Microsoft.Extensions.Hosting
|
||||
{
|
||||
public static class GenericHostWebHostBuilderExtensions
|
||||
{
|
||||
public static IHostBuilder ConfigureWebHost(this IHostBuilder builder, Action<IWebHostBuilder> configure)
|
||||
{
|
||||
var webhostBuilder = new GenericWebHostBuilder(builder);
|
||||
configure(webhostBuilder);
|
||||
return builder;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -15,7 +15,7 @@ namespace Microsoft.AspNetCore.Hosting.Internal
|
|||
|
||||
public MethodInfo MethodInfo { get; }
|
||||
|
||||
public Func<Action<object>, Action<object>> ConfigureContainerFilters { get; set; }
|
||||
public Func<Action<object>, Action<object>> ConfigureContainerFilters { get; set; } = f => f;
|
||||
|
||||
public Action<object> Build(object instance) => container => Invoke(instance, container);
|
||||
|
||||
|
|
|
|||
|
|
@ -17,7 +17,7 @@ namespace Microsoft.AspNetCore.Hosting.Internal
|
|||
|
||||
public MethodInfo MethodInfo { get; }
|
||||
|
||||
public Func<Func<IServiceCollection, IServiceProvider>, Func<IServiceCollection, IServiceProvider>> StartupServiceFilters { get; set; }
|
||||
public Func<Func<IServiceCollection, IServiceProvider>, Func<IServiceCollection, IServiceProvider>> StartupServiceFilters { get; set; } = f => f;
|
||||
|
||||
public Func<IServiceCollection, IServiceProvider> Build(object instance) => services => Invoke(instance, services);
|
||||
|
||||
|
|
|
|||
|
|
@ -267,19 +267,19 @@ namespace Microsoft.AspNetCore.Hosting.Internal
|
|||
return type;
|
||||
}
|
||||
|
||||
private static ConfigureBuilder FindConfigureDelegate(Type startupType, string environmentName)
|
||||
internal static ConfigureBuilder FindConfigureDelegate(Type startupType, string environmentName)
|
||||
{
|
||||
var configureMethod = FindMethod(startupType, "Configure{0}", environmentName, typeof(void), required: true);
|
||||
return new ConfigureBuilder(configureMethod);
|
||||
}
|
||||
|
||||
private static ConfigureContainerBuilder FindConfigureContainerDelegate(Type startupType, string environmentName)
|
||||
internal static ConfigureContainerBuilder FindConfigureContainerDelegate(Type startupType, string environmentName)
|
||||
{
|
||||
var configureMethod = FindMethod(startupType, "Configure{0}Container", environmentName, typeof(void), required: false);
|
||||
return new ConfigureContainerBuilder(configureMethod);
|
||||
}
|
||||
|
||||
private static ConfigureServicesBuilder FindConfigureServicesDelegate(Type startupType, string environmentName)
|
||||
internal static ConfigureServicesBuilder FindConfigureServicesDelegate(Type startupType, string environmentName)
|
||||
{
|
||||
var servicesMethod = FindMethod(startupType, "Configure{0}Services", environmentName, typeof(IServiceProvider), required: false)
|
||||
?? FindMethod(startupType, "Configure{0}Services", environmentName, typeof(void), required: false);
|
||||
|
|
|
|||
|
|
@ -192,7 +192,7 @@ namespace Microsoft.AspNetCore.Hosting.Internal
|
|||
|
||||
if (_startup == null)
|
||||
{
|
||||
throw new InvalidOperationException($"No startup configured. Please specify startup via WebHostBuilder.UseStartup, WebHostBuilder.Configure, injecting {nameof(IStartup)} or specifying the startup assembly via {nameof(WebHostDefaults.StartupAssemblyKey)} in the web host configuration.");
|
||||
throw new InvalidOperationException($"No application configured. Please specify startup via IWebHostBuilder.UseStartup, IWebHostBuilder.Configure, injecting {nameof(IStartup)} or specifying the startup assembly via {nameof(WebHostDefaults.StartupAssemblyKey)} in the web host configuration.");
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -29,9 +29,15 @@ namespace Microsoft.AspNetCore.Hosting
|
|||
|
||||
var startupAssemblyName = configureApp.GetMethodInfo().DeclaringType.GetTypeInfo().Assembly.GetName().Name;
|
||||
|
||||
return hostBuilder
|
||||
.UseSetting(WebHostDefaults.ApplicationKey, startupAssemblyName)
|
||||
.ConfigureServices(services =>
|
||||
hostBuilder.UseSetting(WebHostDefaults.ApplicationKey, startupAssemblyName);
|
||||
|
||||
// Light up the ISupportsStartup implementation
|
||||
if (hostBuilder is ISupportsStartup supportsStartup)
|
||||
{
|
||||
return supportsStartup.Configure(configureApp);
|
||||
}
|
||||
|
||||
return hostBuilder.ConfigureServices(services =>
|
||||
{
|
||||
services.AddSingleton<IStartup>(sp =>
|
||||
{
|
||||
|
|
@ -51,8 +57,15 @@ namespace Microsoft.AspNetCore.Hosting
|
|||
{
|
||||
var startupAssemblyName = startupType.GetTypeInfo().Assembly.GetName().Name;
|
||||
|
||||
hostBuilder.UseSetting(WebHostDefaults.ApplicationKey, startupAssemblyName);
|
||||
|
||||
// Light up the GenericWebHostBuilder implementation
|
||||
if (hostBuilder is ISupportsStartup supportsStartup)
|
||||
{
|
||||
return supportsStartup.UseStartup(startupType);
|
||||
}
|
||||
|
||||
return hostBuilder
|
||||
.UseSetting(WebHostDefaults.ApplicationKey, startupAssemblyName)
|
||||
.ConfigureServices(services =>
|
||||
{
|
||||
if (typeof(IStartup).GetTypeInfo().IsAssignableFrom(startupType.GetTypeInfo()))
|
||||
|
|
@ -100,6 +113,12 @@ namespace Microsoft.AspNetCore.Hosting
|
|||
/// <returns>The <see cref="IWebHostBuilder"/>.</returns>
|
||||
public static IWebHostBuilder UseDefaultServiceProvider(this IWebHostBuilder hostBuilder, Action<WebHostBuilderContext, ServiceProviderOptions> configure)
|
||||
{
|
||||
// Light up the GenericWebHostBuilder implementation
|
||||
if (hostBuilder is ISupportsUseDefaultServiceProvider supportsDefaultServiceProvider)
|
||||
{
|
||||
return supportsDefaultServiceProvider.UseDefaultServiceProvider(configure);
|
||||
}
|
||||
|
||||
return hostBuilder.ConfigureServices((context, services) =>
|
||||
{
|
||||
var options = new ServiceProviderOptions();
|
||||
|
|
|
|||
|
|
@ -0,0 +1,35 @@
|
|||
// 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.Threading;
|
||||
using System.Threading.Tasks;
|
||||
using Microsoft.AspNetCore.Hosting.Server;
|
||||
using Microsoft.AspNetCore.Http.Features;
|
||||
using Microsoft.Extensions.DependencyInjection;
|
||||
using Microsoft.Extensions.Hosting;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Tests.Fakes
|
||||
{
|
||||
internal class GenericWebHost : IWebHost
|
||||
{
|
||||
private readonly IHost _host;
|
||||
|
||||
public GenericWebHost(IHost host)
|
||||
{
|
||||
_host = host;
|
||||
}
|
||||
|
||||
public IFeatureCollection ServerFeatures => Services.GetRequiredService<IServer>().Features;
|
||||
|
||||
public IServiceProvider Services => _host.Services;
|
||||
|
||||
public void Dispose() => _host.Dispose();
|
||||
|
||||
public void Start() => _host.Start();
|
||||
|
||||
public Task StartAsync(CancellationToken cancellationToken = default) => _host.StartAsync(cancellationToken);
|
||||
|
||||
public Task StopAsync(CancellationToken cancellationToken = default) => _host.StopAsync(cancellationToken);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
// 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.Internal;
|
||||
using Microsoft.Extensions.Configuration;
|
||||
using Microsoft.Extensions.DependencyInjection;
|
||||
using Microsoft.Extensions.Hosting;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Tests.Fakes
|
||||
{
|
||||
public class GenericWebHostBuilderWrapper : IWebHostBuilder, ISupportsStartup, ISupportsUseDefaultServiceProvider
|
||||
{
|
||||
private readonly GenericWebHostBuilder _builder;
|
||||
private readonly HostBuilder _hostBuilder;
|
||||
|
||||
internal GenericWebHostBuilderWrapper(HostBuilder hostBuilder)
|
||||
{
|
||||
_builder = new GenericWebHostBuilder(hostBuilder);
|
||||
_hostBuilder = hostBuilder;
|
||||
}
|
||||
|
||||
// This is the only one that doesn't pass through
|
||||
public IWebHost Build()
|
||||
{
|
||||
return new GenericWebHost(_hostBuilder.Build());
|
||||
}
|
||||
|
||||
public IWebHostBuilder Configure(Action<IApplicationBuilder> configure)
|
||||
{
|
||||
_builder.Configure(configure);
|
||||
return this;
|
||||
}
|
||||
|
||||
public IWebHostBuilder ConfigureAppConfiguration(Action<WebHostBuilderContext, IConfigurationBuilder> configureDelegate)
|
||||
{
|
||||
_builder.ConfigureAppConfiguration(configureDelegate);
|
||||
return this;
|
||||
}
|
||||
|
||||
public IWebHostBuilder ConfigureServices(Action<IServiceCollection> configureServices)
|
||||
{
|
||||
_builder.ConfigureServices(configureServices);
|
||||
return this;
|
||||
}
|
||||
|
||||
public IWebHostBuilder ConfigureServices(Action<WebHostBuilderContext, IServiceCollection> configureServices)
|
||||
{
|
||||
_builder.ConfigureServices(configureServices);
|
||||
return this;
|
||||
}
|
||||
|
||||
public string GetSetting(string key)
|
||||
{
|
||||
return _builder.GetSetting(key);
|
||||
}
|
||||
|
||||
public IWebHostBuilder UseDefaultServiceProvider(Action<WebHostBuilderContext, ServiceProviderOptions> configure)
|
||||
{
|
||||
_builder.UseDefaultServiceProvider(configure);
|
||||
return this;
|
||||
}
|
||||
|
||||
public IWebHostBuilder UseSetting(string key, string value)
|
||||
{
|
||||
_builder.UseSetting(key, value);
|
||||
return this;
|
||||
}
|
||||
|
||||
public IWebHostBuilder UseStartup(Type startupType)
|
||||
{
|
||||
_builder.UseStartup(startupType);
|
||||
return this;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
using System;
|
||||
using System.Collections.Generic;
|
||||
using System.Text;
|
||||
using Microsoft.AspNetCore.Builder;
|
||||
using Microsoft.Extensions.DependencyInjection;
|
||||
|
||||
namespace Microsoft.AspNetCore.Hosting.Fakes
|
||||
{
|
||||
public class StartupNoServicesNoInterface
|
||||
{
|
||||
public void ConfigureServices(IServiceCollection services)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
public void Configure(IApplicationBuilder app)
|
||||
{
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -10,6 +10,7 @@
|
|||
|
||||
<ItemGroup>
|
||||
<ProjectReference Include="..\..\src\Microsoft.AspNetCore.Hosting\Microsoft.AspNetCore.Hosting.csproj" />
|
||||
<ProjectReference Include="..\..\src\Microsoft.Extensions.Hosting\Microsoft.Extensions.Hosting.csproj" />
|
||||
<ProjectReference Include="..\TestAssets\TestStartupAssembly1\TestStartupAssembly1.csproj" />
|
||||
</ItemGroup>
|
||||
|
||||
|
|
|
|||
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