Yea - I hear you. I am running around in circles right now trying to
find a temporary solution.
I was, in times past, of the opinion to steer clear of Glassfish. But,
I have since drank the cool-aid - I now want ALL my SOA nodes to be
Glassfish. Glassfish means a lot of different things. At one moment in
time, Glassfish means one thing, in another moment in time Glassfish has
another meaning. But, for me, all cases have the meaning of a grid of
SOA nodes. SOA nodes? Yes, Sir. How else but JAX-WS? So, for me, ALL
my Glassfish instances hava a 'JAX-WS port' (some have several).
So, people, far smarter than I, have built a container with SOA 'faces'.
They have tested. They have reduced the footprint. They have systemic
qualities. They have flexibility that allows for different uses -
sometimes running J2EE stacks, sometimes running EJBModules, sometimes
running IEP, sometimes BPEL - but, no matter, for me, all have 'JAX-WS
ports'. It is called Glassfish. And, in the face of all of that, someone
suggests "just go make your own container" - a simple container, but a
container none-the-less. Not being your brightest boy - this just blows
my mind.
When the system starts up, dozens (today - hundreds to thousands,
tomorrow)of Glassfish nodes light up. The nodes are instructed to load
their behavior. Processing begins - as needs change, bottle necks are
located, the system is further tuned - nodes are added and behavior is
loaded at the node. To enable this type of system, we are always
looking for commonality - reduction in variability while maintaining
flexibility. Selecting a common container is important. I hung my hat
on Glassfish. Can I run off and create my own container - yea - might
do that. But, first, I look for that common factor. If it is not
attainable, then I look for options. Several options have been provided
- and, I appreciate all assistance that has been provided. JCA, JAX-WS
has been suggested. Of course, there are sockets. And there is JMS.
All require a container (minimally, a listener) at the endpoint - too
bad that container cannot be a Glassfish. I know that that container
can be a ServiceMix, but I had my heels dug in, not wanting to go that
direction. I will use a container before I write my own.
So, if my superiors do not give me a pink ticket for not meeting my
deadline, I will have multiple of these "JNI nodes" in my SOA grid. Now
Glassfish has JMX for monitoring. There is a DAS if you cluster. There
is Shoal coming along. But, my little decrepit JNI nodes that I create
will not allow for system awareness. They are warts on my system that
will plague me forever. Thus, the reason why I want all processing
nodes to live within Glassfish.
So, I am between a rock and a hard place.
I appreciate the assistance - you may have saved my job (if I can get
one of the options working before time runs out). Thanx.
-----Original Message-----
From: Markus Karg [mailto:karg_at_quipsy.de]
Sent: Friday, May 29, 2009 9:18 AM
To: users_at_glassfish.dev.java.net
Subject: RE: RE: Re: JNI/CompositeApp/Glassfish
If all you need is to run a BPEL wrapper around a JNI call then you
should have a look at JAX-WS, included in Java SE 6. No need for any
enterprise stuff at all.
> -----Original Message-----
> From: Martin, Ray [mailto:armart3_at_tycho.ncsc.mil]
> Sent: Freitag, 29. Mai 2009 14:22
> To: users_at_glassfish.dev.java.net
> Subject: RE: Re: JNI/CompositeApp/Glassfish
>
> Yes, Mr. Chris suggested to use jmap and jhat to locate the leak. In
> my search for how to use those tools, I found that JNI is not supposed
> to work in EJB. So, I said to myself "wow, I am trying to do stuff
> that you are not even supposed to be doing. It does not really matter
> whether there appears to be a leak or not - the specs say don't do
> it." I
will
> spend many weeks on classloaders and jhat and jmap and... I had a
> deadline to meet to show the great world of Glassfish SOA.
>
> I do not know how to deploy a POJO app (with a BPEL 'face') in a
> composite app. If I knew that, I could call the JNI from the POJO
> (staying out of that EJB world) and meet my deadline and put a smile
on
> my superiors faces. Then later, after my superiors agree that my
> selection of Glassfish is marvelous, then I can look for memory leaks
> or whatever. But, right now, it's killing me.
>
> Thanx.
>
> -----Original Message-----
> From: Sanjeeb.Sahoo_at_Sun.COM [mailto:Sanjeeb.Sahoo_at_Sun.COM] On Behalf
Of
> Sahoo
> Sent: Friday, May 29, 2009 8:07 AM
> To: users_at_glassfish.dev.java.net
> Subject: Re: JNI/CompositeApp/Glassfish
>
> Martin,
>
> I am confused. What's your issue? In your first posting you mentioned
> that you were successful in running JNI code inside GlassFish except
> that you suspected some memory leak for which Chris suggested to use
> tools like hat. You were supposed to analyse the memory leak. Have you
> identified the cause? If yes, then tell us and tell us if it needs a
> fix in GF.
>
> I have failed to identify if you have any other issue in this email
> thread. Personally, I have not come across many use cases where a J2EE
> app uses JNI. It appears that the spec discourages use of JNI. See [1]
> for some discussion. So, over all, it should work with some
> limitations.
>
> Thanks,
> Sahoo
>
> [1]
http://www.theserverside.com/discussions/thread.tss?thread_id=14057
>
> Martin, Ray wrote:
> > i am readin' and scratchin' for JCA information - WOW. What a
> complex
>
> > convoluted mechanism to merely call a tiny piece of code.
> >
> > i have many Glassfish instances running a variety of things as SOA
> > nodes. One of the things that one of the Glassfish nodes must do is
> > run a mathematical algorithm called a bayesian net.
> >
> > Why should it matter that that one instance is not portable? So, it
> > must run on a specific hardware platform, who cares? All that is
> > necessary is for the classloader to function properly to allow this
> > particular non-portable code to run in a nice simplistic manner.
> >
> > But, no - i now am required to build my own EIS-like system to
> contain
>
> > a daemon process to listen for commands to run a small algorithm.
> > Then i need to create an adapter. Then i need to create a
connector.
>
> > Then i need to ... oh boy.
> >
> > And, there is something wrong with a system in which a Glassfish
node
> > performs some specialty algorithm? Hmm - yep, i am too dumb to
> > understand that.
> >
> >
---------------------------------------------------------------------
> -
> > --
> > *From:* Martin, Ray
> > *Sent:* Friday, May 29, 2009 6:22 AM
> > *To:* users_at_glassfish.dev.java.net
> > *Subject:* RE: RE: RE: JNI/CompositeApp/Glassfish
> >
> > i am too dumb to know that was a solution...
> >
> >
---------------------------------------------------------------------
> -
> > --
> > *From:* Markus Karg [mailto:karg_at_quipsy.de]
> > *Sent:* Friday, May 29, 2009 6:14 AM
> > *To:* users_at_glassfish.dev.java.net
> > *Subject:* RE: RE: JNI/CompositeApp/Glassfish
> >
> > The idea of EJB is to have a portable application which runs on any
> > application server on any operating system on any hardware platform.
> > JNI works only with a particular operating system and hardware
> > platform. These two core ideas are absolutely not compatible. It
just
> > makes no sense to use EJB directly with JNI. If native stuff is
> needed
>
> > in an enterprise application, it has to be provided in the form of a
> > JCA 1.5 adapter. This is the official Java EE solution to bind
> > portable applications (EJB) to platform-specific code (JNI). What
> > problem do you have with that?
> >
> >
> >
> > *From:* Martin, Ray [mailto:armart3_at_tycho.ncsc.mil]
> > *Sent:* Freitag, 29. Mai 2009 12:08
> > *To:* users_at_glassfish.dev.java.net
> > *Subject:* RE: JNI/CompositeApp/Glassfish
> >
> >
> >
> > Very smart people created JNI.
> >
> > Very smart people created EJB.
> >
> >
> >
> > These very smart people make sure that JNI cannot operate within EJB
> -
>
> > why would people do something like that?
> >
> >
> >
> > i have fuddled for months building a system around glassfish - now
it
> > looks like i am back to ServiceMix, where i was a year ago
> >
> >
> >
> >
---------------------------------------------------------------------
> -
> > --
> >
> > *From:* Martin, Ray
> > *Sent:* Thursday, May 28, 2009 12:54 PM
> > *To:* users_at_glassfish.dev.java.net
> > *Subject:* JNI/CompositeApp/Glassfish
> >
> > Does anyone have a JNI application running in Glassfish?
> >
> >
> >
> > I have a third party JNI app (Netica). It runs fine from the
command
> > line.
> >
> >
> >
> > i have an EJBModule and a BPEL project added to a composite app.
The
> > composite app is deployed to Glassfish and runs fine - receiving and
> > responding to SOAP message.
> >
> >
> >
> > i then add the JNI app to the EJBModule and deploy the composite app
> > to Glassfish.
> >
> >
> >
> > there are two SOAP messages to the composite app - setup and
> activate.
> >
> >
> >
> > i issue the setup message - the request and response occur.
> >
> > i issue the activate message - the JNI app runs - all is good - the
> > results are stored in the database.
> >
> > after the JNI app should be completed, the memory usage starts to
> climb.
> >
> >
> >
> > any suggestions?
> >
>
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