Can MINA support using worker threads for processing in IoHandler? For
example, if I had code like this, can MINA handle synchronizing sessions in
another thread that is not controlled by it?
public class DbHandler implements IoHandlerAdapter{
ExecutorService executor = Executors.newFixedThreadPool(5);
public void messageReceived( final IoSession session, Object message )
throws Exception
{
executor.execute(new Runnable() {
// get some data from DB
session.write(data) <--- thread-safe code???
});
}
}
Rob Butler wrote:
>
> Generally well built frameworks like Spring will add what they need to the
> ThreadLocal upon entrance of a method and then remove them before exiting
> the method. This works very well as long as the thread is only servicing
> one session. Since DB interaction, etc could possibly block these
> operations should be done within a worker thread obtained from the thread
> pool. As long as you have the Spring bits that access the thread local
> after you get a worker thread everything should work fine.
>
> Rob
>
> ----- Original Message ----
> From: hstang <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Sent: Saturday, April 14, 2007 9:44:37 AM
> Subject: MINA and ThreadLocals used in other frameworks
>
>
> Hi,
>
> I was wondering if anyone has experiences successfully integrating MINA
> with
> other frameworks that depend on ThreadLocals (e.g. Hibernate, Spring
> transactions)?
>
> I looked through some bits and pieces of MINA code and it appears that
> there's one thread that manages processing many different sessions, as it
> should be. The problem I see is that other frameworks often assume the
> underlying architecture is a one-thread-per-request model and relies on
> ThreadLocal for per-thread state, like transactions for example. So
> suppose
> if you were to use Hibernate during processing in MINA, is it possible
> MINA
> sessions can pick up each other transaction context accidentally? Do we
> have to trust that other frameworks will cleanup the ThreadLocal variables
> when it's done with the request?
>
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>
>
>
>
>
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