/// <summary>
/// Configures startup modules with the specified configuration for <see cref="StartupModulesOptions"/>.
/// </summary>
/// <param name="builder">The <see cref="IWebHostBuilder"/> instance.</param>
/// <param name="configure">A callback to configure <see cref="StartupModulesOptions"/>.</param>
/// <returns>The <see cref="IWebHostBuilder"/> instance.</returns>
public static IWebHostBuilder UseStartupModules(this IWebHostBuilder builder, Action <StartupModulesOptions> configure)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (configure == null)
{
throw new ArgumentNullException(nameof(configure));
}
var options = new StartupModulesOptions();
configure(options);
if (options.StartupModules.Count == 0 && options.ApplicationInitializers.Count == 0)
{
// Nothing to do here
return(builder);
}
var runner = new StartupModuleRunner(options);
builder.ConfigureServices((hostContext, services) =>
{
services.AddSingleton <IStartupFilter>(sp => ActivatorUtilities.CreateInstance <ModulesStartupFilter>(sp, runner));
var configureServicesContext = new ConfigureServicesContext(hostContext.Configuration, hostContext.HostingEnvironment, options);
runner.ConfigureServices(services, hostContext.Configuration, hostContext.HostingEnvironment);
});
return(builder);
}
/// <summary>
/// Calls <see cref="IStartupModule.ConfigureServices(IServiceCollection, ConfigureServicesContext)"/> on the
/// discoverd <see cref="IStartupModule"/>'s.
/// </summary>
public void ConfigureServices(IServiceCollection services, IConfiguration configuration, IWebHostEnvironment hostingEnvironment)
{
var ctx = new ConfigureServicesContext(configuration, hostingEnvironment, _options);
foreach (var cfg in _options.StartupModules)
{
cfg.ConfigureServices(services, ctx);
}
}
