public static IWebHostBuilder UseStartupModules(this IWebHostBuilder builder, Action <StartupModulesOptions> configure)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
var options = new StartupModulesOptions();
options.DiscoverStartupModules();
if (configure == null)
{
throw new ArgumentNullException(nameof(configure));
}
configure(options);
if (options.StartupModules.Count == 0)
{
return(builder);
}
var runner = new StartupModuleRunner(options);
builder.ConfigureServices((hostContext, services) =>
{
//注册 IStartupFilter实现
services.AddSingleton <IStartupFilter>(sp => ActivatorUtilities.CreateInstance <ModulesStartupFilter>(sp, runner));
runner.ConfigureServices(services, hostContext.Configuration, hostContext.HostingEnvironment);
});
return(builder);
}
public StartupModuleRunner(StartupModulesOptions options)
{
_options = options;
}
public ConfigureServicesContext(IConfiguration configuration, IWebHostEnvironment hostEnvironment, StartupModulesOptions options)
{
Configuration = configuration;
HostEnvironment = hostEnvironment;
Options = options;
}