public static IAsyncProcessorBuilder UseMiddlewareAsync(this IAsyncProcessorBuilder asyncProcessorBuilder, Type asyncProcessorType, StageConfiguration stageConfiguration)
{
if ((object)asyncProcessorBuilder == null)
{
throw new ArgumentNullException(nameof(asyncProcessorBuilder));
}
if ((object)asyncProcessorType == null)
{
throw new ArgumentNullException(nameof(asyncProcessorType));
}
if ((object)stageConfiguration == null)
{
throw new ArgumentNullException(nameof(stageConfiguration));
}
return(asyncProcessorBuilder.UseAsync(asyncNext =>
{
return async(asyncContext, configuration, asyncChannel, cancellationToken) =>
{
IAsyncProcessor asyncProcessor;
IAsyncChannel newAsyncChannel;
asyncProcessor = (IAsyncProcessor)Activator.CreateInstance(asyncProcessorType);
if ((object)asyncProcessor == null)
{
throw new InvalidOperationException(nameof(asyncProcessor));
}
using (AsyncDisposal.Await(asyncProcessor, cancellationToken))
{
asyncProcessor.Configuration = stageConfiguration;
await asyncProcessor.CreateAsync(cancellationToken);
await asyncProcessor.PreExecuteAsync(asyncContext, configuration, cancellationToken);
newAsyncChannel = await asyncProcessor.ProcessAsync(asyncContext, configuration, asyncChannel, asyncNext, cancellationToken);
await asyncProcessor.PostExecuteAsync(asyncContext, configuration, cancellationToken);
return newAsyncChannel;
}
};
}));
}
public static IAsyncProcessorBuilder UseMiddlewareAsync(this IAsyncProcessorBuilder asyncProcessorBuilder, IAsyncProcessor asyncProcessor, StageConfiguration stageConfiguration)
{
if ((object)asyncProcessorBuilder == null)
{
throw new ArgumentNullException(nameof(asyncProcessorBuilder));
}
if ((object)asyncProcessor == null)
{
throw new ArgumentNullException(nameof(asyncProcessor));
}
if ((object)stageConfiguration == null)
{
throw new ArgumentNullException(nameof(stageConfiguration));
}
return(asyncProcessorBuilder.UseAsync(asyncNext =>
{
return async(asyncContext, configuration, asyncChannel, cancellationToken) =>
{
IAsyncProcessor _asyncProcessor = asyncProcessor; // prevent closure bug
IAsyncChannel newAsyncChannel;
using (AsyncDisposal.Await(_asyncProcessor, cancellationToken))
{
_asyncProcessor.Configuration = stageConfiguration;
await _asyncProcessor.CreateAsync(cancellationToken);
await _asyncProcessor.PreExecuteAsync(asyncContext, configuration, cancellationToken);
newAsyncChannel = await _asyncProcessor.ProcessAsync(asyncContext, configuration, asyncChannel, asyncNext, cancellationToken);
await _asyncProcessor.PostExecuteAsync(asyncContext, configuration, cancellationToken);
return newAsyncChannel;
}
};
}));
}
