public RequestHandlerFactory(IContainerManager containerManager, IJobManager jobManager, Message.Type requestType, Request request)
{
if (containerManager == null)
{
throw new ArgumentNullException("containerManager");
}
if (jobManager == null)
{
throw new ArgumentNullException("jobManager");
}
if (requestType == default(Message.Type))
{
throw new ArgumentNullException("requestType");
}
if (request == null)
{
throw new ArgumentNullException("message");
}
this.containerManager = containerManager;
this.jobManager = jobManager;
this.requestType = requestType;
this.request = request;
}
public async Task Handle(Message message)
{
if (message == null)
{
throw new ArgumentNullException("message");
}
log.Trace("MessageType: '{0}'", message.MessageType.ToString());
var unwrapper = new MessageUnwrapper(message);
Request request = unwrapper.GetRequest();
RequestHandler handler = null;
ErrorResponse errorResponse = null;
try
{
var factory = new RequestHandlerFactory(containerManager, jobManager, message.MessageType, request);
handler = factory.GetHandler();
}
catch (Exception ex)
{
log.ErrorException(ex);
errorResponse = new ErrorResponse { Message = ex.Message };
}
if (errorResponse != null)
{
await messageWriter.WriteAsync(errorResponse);
return;
}
try
{
var streamingHandler = handler as IStreamingHandler;
if (streamingHandler != null)
{
Response finalResponse = await streamingHandler.HandleAsync(messageWriter, cancellationToken);
if (finalResponse == null)
{
string errorMessage = String.Format("Null final response from streaming handler '{0}'", streamingHandler.GetType());
log.Error(errorMessage);
finalResponse = new ErrorResponse { Message = errorMessage };
}
await messageWriter.WriteAsync(finalResponse);
return;
}
else
{
Response response = await handler.HandleAsync();
await messageWriter.WriteAsync(response);
}
}
catch (Exception ex)
{
if (ex is WardenException)
{
throw;
}
else
{
throw new WardenException(String.Format("Exception in request handler '{0}'", handler.ToString()), ex);
}
}
log.Trace("Finished handling message: '{0}'", message.MessageType.ToString());
}
