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Server thread status to the client [message #535173]

Fri, 21 May 2010 13:28

Matthias

Messages: 52
Registered: September 2009

Member

Hi, one more for the weekend Smile

i want the status of a server thread to be displayed in the client gui.
is that possible? and what's the best approach to do that? by running a client thread that is polling about the server status every second?

matthias

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Re: Server thread status to the client [message #535520 is a reply to message #535173]

Mon, 24 May 2010 08:51

Christian Campo

Messages: 597
Registered: July 2009

Senior Member

Am 21.05.10 15:28, schrieb Matthias:
> Hi, one more for the weekend :)
>
> i want the status of a server thread to be displayed in the client gui.
> is that possible? and what's the best approach to do that? by running a
> client thread that is polling about the server status every second?
>
> matthias
good news, bad news.

currently its tricky if not impossible if you use remote services as stateless remote services with possible multiple
server instances (physical machines). Then a monitoring remote call will unlikly hit the same server and it will be hard
for him to tell what the status. You could do that my storing the status of the remote service in a persistence store
and then the polling remote call would just ask that store. Will work, will scale hmmm

another solution is that we have something like a remote Eclipse Job. (or in Riena we also use the wrapper UI Process
for Eclipse Jobs). Something where you have a monitor on the client and it gets fed about monitor updates, status
messages, progress in general from the server while the call is going on. This requires to extend the Hessian protocol
and is really protocol specific. I once did an experimental implementation for that which never made it into CVS. It is
possible and worked quite well. Its just not there :-)

christian

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Re: Server thread status to the client [message #535903 is a reply to message #535173]

Wed, 26 May 2010 09:49

Matthias

Messages: 52
Registered: September 2009

Member

Actually i don't care about performance issues (right now). We only have one server instance and approx. 10 clients to be fed with server status messages.
I collect the server status messages in a remote repository. The client has an UIProcess that polls for messages that are valid in a certain scope (client ID, corresponding task, etc.).
I'm fine with this solution until there's a more flexible remote monitoring solution someday Smile

Thanks, matthias

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