Re: [Simpleweb-Support] Asynchronous services get blocked

[Alvaro G. <alv...@gm...>]

Hi,

I would belive what you say but, I have another but simpler test. I can
send you the code if you want a simple Asynchron invokation...just an empty
task with a simple sleep. If you send 10 request from "Soap-ui" (Loadtest)
you will se that the simpleframe get blocked. We use for logging log4j, but
it should not matter.

Just try it before you say anything I think you test it yourself.

- Klient Soap-ui Loadtest 10 request
the code:
public class TestAsynchronousServiceContainer implements Container {

    private final ExecutorService executor;
     public class TestTask implements Runnable{

            public void run() {
                long recievedTime = System.currentTimeMillis();

               try {


                    System.out.println("Timeout in millis " + 10000);
                    long timeOutStarted = System.currentTimeMillis();
                    System.out.println("Timeout startade " + new
Date(timeOutStarted));
//                    pauseReqAnswer(messageTimeOut);
                    Thread.sleep(10000);
                    System.out.println("The response time was: " +
recievedTime + " ms ");


               } catch(Exception e) {
                   e.printStackTrace();
               }
            }
     }

       public TestAsynchronousServiceContainer() {

          this.executor = Executors.newCachedThreadPool();
//           this.executor = Executors.newFixedThreadPool(100);


       }

       @Override
       public void handle(Request request, Response response)
       {

          System.out.println("receiving request " +
request.getAddress().toString());
//          Task task = new Task(request, response, cfg);
          TestTask task = new TestTask();
          executor.execute(task);
          System.out.println("Executing task");
       }

}


public static void main(String[] list) throws Exception {


        Container container = new TestAsynchronousServiceContainer();
        Server server = new ContainerServer(container);
        Connection connection = new SocketConnection(server);
        InetSocketAddress address = new InetSocketAddress(8888);
        String hostName = getLocalHostName();

        LOG.info("HTTP SERVER STARTING at url: http://" + hostName + ":" +
cfg.getServerPort());
        connection.connect(address);

    }



I have had 3 developers with about 10 years experience and every one of
them have got the same result. Remember they run a SOAP-UI klient


2013/4/30 Niall Gallagher <gal...@ya...>

> Hi Alvaro,
>
> This is simply not true, there is something wrong with your test code, not
> sure what exactly but I would recommend you take a closer look at your code.
>
> Niall
>
> --- On *Tue, 30/4/13, Alvaro Guillermo <alv...@gm...>* wrote:
>
>
> From: Alvaro Guillermo <alv...@gm...>
> Subject: [Simpleweb-Support] Asynchronous services get blocked
> To: Sim...@li...
> Received: Tuesday, 30 April, 2013, 1:38 AM
>
>
> nice and easy to use but there seems to be a problem when you use several
> thread. I have a timeout for certain type of request the code is quite
> straightforward. I looks like the example, ie.
>
>
> this.executor = Executors.newCachedThreadPool();
> @Override
> public void handle(Request request, Response response)
> {
>
> LOG.info("receiving request " + request.getAddress().toString());
> Task task = new Task(request, response, cfg);
> executor.execute(task);
> LOG.info("Executing task");
> }
>
> There is two differences In the Task compared to the examples in the
> homepage,
>
> 1)I have a Thread.sleep(millis)
>
> 2) I used Executors.newCachedThreadPool
>
> I tried the same sniper code outside the simpleframework and It worked
> fine. The problem is that it seems that when you have big loads of
> requests  the simpleframework get a blocked handling like 3 requests at the
> time, ie. and it does not handle more request until the current Threads
> have runned completetly.
>
> In my eyes it should continue to handle requests even if some threads are
> sleeping, if you are using threads, the same sniper code outside
> simpleframework works fine so I don't think it has to do with the code. I
> tried also without Thread.sleep but I let the "task" do a lot of things
> that took about 10 seconds to finish. The same problem here simpleframework
> get blocked until it was finished with the current tasks, despite the fact
> it was supposed to run asynchronously. The same code works fine outside
> simpleframework, when I put it in a "main" class instead.
>
> I need some hints och help with this issue.
> ------------------------------
>
>
>
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-- 
Alvaro Rubio M. Sc. (Computer and System sciences)
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