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From Martin Grigorov <mgrigo...@apache.org>
Subject Re: What is the proper way to start a secondary process in Wicket 6
Date Thu, 20 Nov 2014 07:54:17 GMT
Hi,

Someday I'll write a blog (with a demo) about this at
http://wicketinaction.com.
The question is being asked regularly.

Actually anyone can send a Pull Request at
https://github.com/dashorst/wicketinaction.com with such article.

Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov

On Thu, Nov 20, 2014 at 7:26 AM, Ernesto Reinaldo Barreiro <
reiern70@gmail.com> wrote:

> Hi Warren,
>
>
> On Thu, Nov 20, 2014 at 12:46 AM, Warren Bell <warrenbell2@gmail.com>
> wrote:
>
> > I am using Wicket 6 REST annotations and want to asynchronously start a
> > process that writes some logging data to a db. I don’t need the response
> to
> > wait for this process. I have tried using threads, but I get the “App not
> > attached to this thread” exception when I try to use an injected service.
> > This logging process is a little more complicated than what log4j or
> > loopback can do. The bottom line is that I do not want the
> request/response
> > process to have to wait for the logging process to complete. What is the
> > proper way of doing this in Wicket 6 using an injected service.
> >
> > Sometimes  what I do is I create a context class ServiceHolder, inject
> what I need on this class (e.g. services) and pass this to the non web
> thread (e.g as an argument to the runnable). Injector.inject will have
> WicketApp in context.
>
>
> > 1) Get request
> > 2) Log some data (Do not wait for this to complete)
> > 3) Process request
> > 4) Return response
> >
>
> You could use the same ServiceHolder as a bridge to pass info to the WEB
> layer. 1) keep a reference to it 2) in another (polling) request use it to
> see how back-ground job is progressing. Sometimes I also use it to control
> the Job: e.g. stop/pause it, cancel it. Once Job finishes just let service
> holder "go".
>
>
> > Thanks,
> >
> > Warren Bell
> > ---------------------------------------------------------------------
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> >
> >
>
>
> --
> Regards - Ernesto Reinaldo Barreiro
>

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