Question: Why ExecutionHandler in netty only support upstream?

["Trustin Lee (이희승)"]

Hi,

李巍 wrote:
> Dear netty users
> 
>     Netty is supposed to support SEDA (Staged Event-Driven Architecture),
> but in org.jboss.netty.handler.execution.ExecutionHandler, the executor is
> only used in handleUpstream(), what about handleDownstream()? If I want to
> only put the encoding logic in another thread pool, how to deal with that?
> If I remember correctly, Mina support this.

I doubt it will improve performance significantly, and that's why I
didn't put such feature to Netty.  If you really want to do that, you could:

  1) Copy ChannelEventRunnable and modify run() method to call
ctx.sendDownstream() instead of sendUpstream().
  2) Call executor.execute(new ChannelEventRunnable2(evt)) in
handleDownstream():

    public void handleDownstream(ctx, e) {
        executor.execute(new ChannelEventRunnable2(evt));
    }

HTH,
Trustin

-- 
what we call human nature in actuality is human habit
http://gleamynode.net/


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