public async ValueTask DispatchAsync <TContext>(TContext context) where TContext : BaseContext
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
await foreach (var handler in GetHandlersAsync())
{
try
{
await handler.HandleAsync(context);
}
catch (Exception exception) when(_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug(exception, SR.GetResourceString(SR.ID7132), handler.GetType().FullName, typeof(TContext).FullName);
throw;
}
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug(SR.GetResourceString(SR.ID7133), typeof(TContext).FullName, handler.GetType().FullName);
}
switch (context)
{
case BaseRequestContext notification when notification.IsRequestHandled:
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug(SR.GetResourceString(SR.ID7134), typeof(TContext).FullName, handler.GetType().FullName);
}
return;
case BaseRequestContext notification when notification.IsRequestSkipped:
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug(SR.GetResourceString(SR.ID7135), typeof(TContext).FullName, handler.GetType().FullName);
}
return;
case BaseValidatingContext notification when notification.IsRejected:
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug(SR.GetResourceString(SR.ID7136), typeof(TContext).FullName, handler.GetType().FullName);
}
return;
default: continue;
}
}
async IAsyncEnumerable <IOpenIddictValidationHandler <TContext> > GetHandlersAsync()
{
// Note: the descriptors collection is sorted during options initialization for performance reasons.
var descriptors = _options.CurrentValue.Handlers;
if (descriptors.Count == 0)
{
yield break;
}
for (var index = 0; index < descriptors.Count; index++)
{
var descriptor = descriptors[index];
if (descriptor.ContextType != typeof(TContext) || !await IsActiveAsync(descriptor))
{
continue;
}
var handler = descriptor.ServiceDescriptor.ImplementationInstance != null ?
descriptor.ServiceDescriptor.ImplementationInstance as IOpenIddictValidationHandler <TContext> :
_provider.GetService(descriptor.ServiceDescriptor.ServiceType) as IOpenIddictValidationHandler <TContext>;
if (handler == null)
{
throw new InvalidOperationException(SR.FormatID1137(descriptor.ServiceDescriptor.ServiceType));
}
yield return(handler);
}
}
async ValueTask <bool> IsActiveAsync(OpenIddictValidationHandlerDescriptor descriptor)
{
for (var index = 0; index < descriptor.FilterTypes.Length; index++)
{
if (!(_provider.GetService(descriptor.FilterTypes[index]) is IOpenIddictValidationHandlerFilter <TContext> filter))
{
throw new InvalidOperationException(SR.FormatID1098(descriptor.FilterTypes[index]));
}
if (!await filter.IsActiveAsync(context))
{
return(false);
}
}
return(true);
}
}