Suggestions for socket listener

[ChrisOwens <ch...@chris-owens.com>]

I have an application that makes extensive use of EJB and runs in a TomEE
server.  I have a new requirement to listen for UDP broadcast datagrams. I
understand that running a socket listener from a singleton bean is
non-compliant with EJB recommended practices, but I'm not sure what the
cleanest way to implement this is. I have begun to read about JCA adapters
but have not got far yet. I could also run a separate, standalone process
that listens for the datagrams and then emits JMS messages. Do you have any
recommendations?

Thanks,

/c



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Re: Suggestions for socket listener

["Jonathan S. Fisher" <jo...@springventuregroup.com>]

We had a similar problem: Take events from the Asterisk system and
broadcast them as Topics in ActiveMQ.

Solved it by having an ejb @Singleton @Startup that in a @Postconstruct
method called another @Singleton with a method marked @Asyncronous to
initialize the UDP socket. After that it was fairly simple @Resource
injections to send messages.

We violated some JEE rules along the way but it's extremely simple and it
works :)


On Sun, Oct 25, 2015 at 8:25 AM, Romain Manni-Bucau <rm...@gmail.com>
wrote:

> I d go for a jca connector. Come back to us if you have any issue or
> misunderstanding.
> Le 25 oct. 2015 14:21, "ChrisOwens" <ch...@chris-owens.com> a écrit :
>
> > I have an application that makes extensive use of EJB and runs in a TomEE
> > server.  I have a new requirement to listen for UDP broadcast datagrams.
> I
> > understand that running a socket listener from a singleton bean is
> > non-compliant with EJB recommended practices, but I'm not sure what the
> > cleanest way to implement this is. I have begun to read about JCA
> adapters
> > but have not got far yet. I could also run a separate, standalone process
> > that listens for the datagrams and then emits JMS messages. Do you have
> any
> > recommendations?
> >
> > Thanks,
> >
> > /c
> >
> >
> >
> > --
> > View this message in context:
> >
> http://tomee-openejb.979440.n4.nabble.com/Suggestions-for-socket-listener-tp4676581.html
> > Sent from the TomEE Users mailing list archive at Nabble.com.
> >
>

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Re: Suggestions for socket listener

[Romain Manni-Bucau <rm...@gmail.com>]

I d go for a jca connector. Come back to us if you have any issue or
misunderstanding.
Le 25 oct. 2015 14:21, "ChrisOwens" <ch...@chris-owens.com> a écrit :

> I have an application that makes extensive use of EJB and runs in a TomEE
> server.  I have a new requirement to listen for UDP broadcast datagrams. I
> understand that running a socket listener from a singleton bean is
> non-compliant with EJB recommended practices, but I'm not sure what the
> cleanest way to implement this is. I have begun to read about JCA adapters
> but have not got far yet. I could also run a separate, standalone process
> that listens for the datagrams and then emits JMS messages. Do you have any
> recommendations?
>
> Thanks,
>
> /c
>
>
>
> --
> View this message in context:
> http://tomee-openejb.979440.n4.nabble.com/Suggestions-for-socket-listener-tp4676581.html
> Sent from the TomEE Users mailing list archive at Nabble.com.
>