Re: Service and Component Frameworks

Barnhill William Wed, 03 Dec 2003 06:22:28 -0800

For #5, has anyone looked into connecting the WSIF project ( http://ws.apache.org/wsif/ ) into Cornerstone as a service factory? And what does everyone think about the advisability of doing that?

Bill

David Le Strat wrote:

Scott,
I agree with you on those. A couple more features
could be:
5. The service framework provides the ability to web
service enable services.
6. The service framework provides the ability to
monitor the services performance.
I am not sure what others think but I feel that some
type of interceptor framework would be quite
important.
Regards,

David.

--- "Weaver, Scott" <[EMAIL PROTECTED]> wrote:
What would be the key features that we would be looking for?
This is me speaking, but I am sure others feel the
same:
1. Transparent JMX management of deployed modules. 2. Hot deploy and hot configuration. No more stop container, change property(ies), restart container, wash, rinse, repeat. Gawd, that's a HUGE PITA! 3. The use of POJOs as components would be a nice feature but isn't really a deal breaker. 4. Self-contained deployment either via jar or some other container/archive mechanism. Each module would have its own config file included. No more sifting through unwieldy properties files. This also makes updating from the CVS easier you don't have to worry about dif'ing out all the changes you made that will more than likely conflict with the CVS. You obviously have to perform some dif'ing, but in smaller more manageable chunks.

Regards, *================================* | Scott T Weaver | | <[EMAIL PROTECTED]> | | Apache Jetspeed Portal Project | | Apache Pluto Portlet Container | *================================*
-----Original Message-----
From: David Le Strat [mailto:[EMAIL PROTECTED]
Sent: Saturday, November 29, 2003 11:44 AM
To: Jetspeed Developers List
Subject: Re: Service and Component Frameworks
All,

There is a lot of good info comparing the
differences

between frameworks at:
http://wiki.apache.org/geronimo/Architecture_2fKernel

Regarding Hivemind, Howard gave a presentation a

while

back, some more info on Hivemind can be found at:

http://www.mail-archive.com/[EMAIL PROTECTED]/msg08269.html
It is a neat framework and hopefully the

intellectual

property issue will be resolved soon. I

especially

like the clean interceptor model. The

substitution

model would also be quite handy to create clean separated modules and substitute common

configuration

from a central configuration point. Finally

Hivedoc is
quite nice in providing a clear picture of the
dependencies between modules.
Another interesting approach (which is the
approach

taken by ExoPortal for instance) would be to

combine

AOP with Pico container or Avalon (Merlin seems to

be
the recommended service framework).

Lots of choices out there.
What would be the key features that we would be
looking for?
Regards,

David.

--- David Sean Taylor <[EMAIL PROTECTED]>
wrote:
Im starting a little informal thread discussing
Service and Component
Frameworks.
Currently we are using Fulcrum in Jetspeed-2. While I do like Fulcrum and it has been very
useful

for us, there are now more advanced service frameworks available. All services in J2 are implemented as Common

Portlet

Services. The goal of CPS was to act as a layer so that we could

more

easily swap out Fulcrum in the future. I think that time has

come

and we need to start reviewing the other frameworks and make a

decision.
The frameworks we have considering are:
1. Hivemind
2. Pico Container
3. Jetspeed Cornerstone (not to be confused with
Avalon Cornerstone)
4. Avalon
I really like what I've seen in Hivemind,
however

the current licensing issues concern me. I also think that Cornerstone, contributed by

the
Cisco team to
Jetspeed, is very powerful.
Are there other service frameworks we should be
considering?
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Re: Service and Component Frameworks

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