/// <summary>
/// Resolves the <see cref="IServiceProvider"/> instance from the OWIN context
/// and creates a new instance of the <see cref="OpenIddictServerOwinMiddleware"/> class,
/// which is used to register <see cref="OpenIddictServerOwinHandler"/> in the pipeline.
/// </summary>
/// <param name="context">The <see cref="IOwinContext"/>.</param>
/// <returns>
/// A <see cref="ValueTask"/> that can be used to monitor the asynchronous operation.
/// </returns>
public override Task Invoke([NotNull] IOwinContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var provider = context.Get <IServiceProvider>(typeof(IServiceProvider).FullName);
if (provider == null)
{
throw new InvalidOperationException(new StringBuilder()
.Append("No service provider was found in the OWIN context. For the OpenIddict server ")
.Append("services to work correctly, a per-request 'IServiceProvider' must be attached ")
.AppendLine("to the OWIN environment with the dictionary key 'System.IServiceProvider'.")
.Append("Note: when using a dependency injection container supporting middleware resolution ")
.Append("(like Autofac), the 'app.UseOpenIddictServer()' extension MUST NOT be called.")
.ToString());
}
// Note: the Microsoft.Extensions.DependencyInjection container doesn't support resolving services
// with arbitrary parameters, which prevents the server OWIN middleware from being resolved directly
// from the DI container, as the next middleware in the pipeline cannot be specified as a parameter.
// To work around this limitation, the server OWIN middleware is manually instantiated and invoked.
var middleware = new OpenIddictServerOwinMiddleware(
next: Next,
options: GetRequiredService <IOptionsMonitor <OpenIddictServerOwinOptions> >(provider),
dispatcher: GetRequiredService <IOpenIddictServerDispatcher>(provider),
factory: GetRequiredService <IOpenIddictServerFactory>(provider));
return(middleware.Invoke(context));
/// <summary>
/// Resolves the <see cref="IServiceProvider"/> instance from the OWIN context
/// and creates a new instance of the <see cref="OpenIddictServerOwinMiddleware"/> class,
/// which is used to register <see cref="OpenIddictServerOwinHandler"/> in the pipeline.
/// </summary>
/// <param name="context">The <see cref="IOwinContext"/>.</param>
/// <returns>
/// A <see cref="ValueTask"/> that can be used to monitor the asynchronous operation.
/// </returns>
public override Task Invoke(IOwinContext context)
{
if (context is null)
{
throw new ArgumentNullException(nameof(context));
}
var provider = context.Get <IServiceProvider>(typeof(IServiceProvider).FullName);
if (provider is null)
{
throw new InvalidOperationException(SR.GetResourceString(SR.ID0121));
}
// Note: the Microsoft.Extensions.DependencyInjection container doesn't support resolving services
// with arbitrary parameters, which prevents the server OWIN middleware from being resolved directly
// from the DI container, as the next middleware in the pipeline cannot be specified as a parameter.
// To work around this limitation, the server OWIN middleware is manually instantiated and invoked.
var middleware = new OpenIddictServerOwinMiddleware(
next: Next,
options: GetRequiredService <IOptionsMonitor <OpenIddictServerOwinOptions> >(provider),
dispatcher: GetRequiredService <IOpenIddictServerDispatcher>(provider),
factory: GetRequiredService <IOpenIddictServerFactory>(provider));
return(middleware.Invoke(context));