7:21 p.m.
Hi
I'm trying to query Cassandra asynchronously from inside an HttpHandler,
but by the time the listener is run, Undertow has closed the response
channel. Is there some way to keep it open? Can you suggest another
approach?
Thanks
Adrian
8:10 p.m.
You need to call the HttpServerExchange#dispatch() method, this will stop the exchange
from ending when the call stack returns.
Stuart
----- Original Message -----
From: "Adrian" <agbauer(a)gmail.com>
To: undertow-dev(a)lists.jboss.org
Sent: Friday, 23 May, 2014 12:21:53 PM
Subject: [undertow-dev] asynchronous cassandra queries
Hi
I'm trying to query Cassandra asynchronously from inside an HttpHandler, but
by the time the listener is run, Undertow has closed the response channel.
Is there some way to keep it open? Can you suggest another approach?
Thanks
Adrian
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undertow-dev mailing list
undertow-dev(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/undertow-dev
8:19 p.m.
Really? I tried dispatch(this) and dispatching to a separate thread pool I
created. In both cases exchange.isComplete() returned true in my Cassandra
listener and writing response data resulted in an exception.
On May 23, 2014 11:10 AM, "Stuart Douglas" <sdouglas(a)redhat.com> wrote:
You need to call the HttpServerExchange#dispatch() method, this will
stop
the exchange from ending when the call stack returns.
Stuart
----- Original Message -----
> From: "Adrian" <agbauer(a)gmail.com>
> To: undertow-dev(a)lists.jboss.org
> Sent: Friday, 23 May, 2014 12:21:53 PM
> Subject: [undertow-dev] asynchronous cassandra queries
>
> Hi
>
> I'm trying to query Cassandra asynchronously from inside an HttpHandler,
but
> by the time the listener is run, Undertow has closed the response
channel.
> Is there some way to keep it open? Can you suggest another approach?
>
> Thanks
> Adrian
>
> _______________________________________________
> undertow-dev mailing list
> undertow-dev(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/undertow-dev
8:34 p.m.
You need to call the version with no arguments, or the one that dispatches to a Runnable
(which is not well named, I think I will change it to detach() or suspend(), its current
name came about just because internally it works the same as the other dispatch method
calls).
When Undertow is running a handler chain then it will always end the exchange when the
call stack completes unless dispatch() has been called, in your case you immediately
dispatched another handler chain, so when that handler returned the exchange will be
ended.
Stuart
----- Original Message -----
From: "Adrian" <agbauer(a)gmail.com>
To: "Stuart Douglas" <sdouglas(a)redhat.com>
Cc: undertow-dev(a)lists.jboss.org
Sent: Friday, 23 May, 2014 1:19:10 PM
Subject: Re: [undertow-dev] asynchronous cassandra queries
Really? I tried dispatch(this) and dispatching to a separate thread pool I
created. In both cases exchange.isComplete() returned true in my Cassandra
listener and writing response data resulted in an exception.
On May 23, 2014 11:10 AM, "Stuart Douglas" <sdouglas(a)redhat.com> wrote:
> You need to call the HttpServerExchange#dispatch() method, this will stop
> the exchange from ending when the call stack returns.
>
> Stuart
>
> ----- Original Message -----
> > From: "Adrian" <agbauer(a)gmail.com>
> > To: undertow-dev(a)lists.jboss.org
> > Sent: Friday, 23 May, 2014 12:21:53 PM
> > Subject: [undertow-dev] asynchronous cassandra queries
> >
> > Hi
> >
> > I'm trying to query Cassandra asynchronously from inside an HttpHandler,
> but
> > by the time the listener is run, Undertow has closed the response
> channel.
> > Is there some way to keep it open? Can you suggest another approach?
> >
> > Thanks
> > Adrian
> >
> > _______________________________________________
> > undertow-dev mailing list
> > undertow-dev(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/undertow-dev
>
8:38 p.m.
Great. Thank you.
On May 23, 2014 11:34 AM, "Stuart Douglas" <sdouglas(a)redhat.com> wrote:
You need to call the version with no arguments, or the one that
dispatches
to a Runnable (which is not well named, I think I will change it to
detach() or suspend(), its current name came about just because internally
it works the same as the other dispatch method calls).
When Undertow is running a handler chain then it will always end the
exchange when the call stack completes unless dispatch() has been called,
in your case you immediately dispatched another handler chain, so when that
handler returned the exchange will be ended.
Stuart
----- Original Message -----
> From: "Adrian" <agbauer(a)gmail.com>
> To: "Stuart Douglas" <sdouglas(a)redhat.com>
> Cc: undertow-dev(a)lists.jboss.org
> Sent: Friday, 23 May, 2014 1:19:10 PM
> Subject: Re: [undertow-dev] asynchronous cassandra queries
>
> Really? I tried dispatch(this) and dispatching to a separate thread pool
I
> created. In both cases exchange.isComplete() returned true in my
Cassandra
> listener and writing response data resulted in an exception.
> On May 23, 2014 11:10 AM, "Stuart Douglas" <sdouglas(a)redhat.com>
wrote:
>
> > You need to call the HttpServerExchange#dispatch() method, this will
stop
> > the exchange from ending when the call stack returns.
> >
> > Stuart
> >
> > ----- Original Message -----
> > > From: "Adrian" <agbauer(a)gmail.com>
> > > To: undertow-dev(a)lists.jboss.org
> > > Sent: Friday, 23 May, 2014 12:21:53 PM
> > > Subject: [undertow-dev] asynchronous cassandra queries
> > >
> > > Hi
> > >
> > > I'm trying to query Cassandra asynchronously from inside an
HttpHandler,
> > but
> > > by the time the listener is run, Undertow has closed the response
> > channel.
> > > Is there some way to keep it open? Can you suggest another approach?
> > >
> > > Thanks
> > > Adrian
> > >
> > > _______________________________________________
> > > undertow-dev mailing list
> > > undertow-dev(a)lists.jboss.org
> > > https://lists.jboss.org/mailman/listinfo/undertow-dev
> >
>
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4 comments
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Stuart Douglas