On Mar 23, 2009, at Mar 23, 9:24 AM, tracy_luofengji wrote:
Dear All,
Hello. Here I want to ask a question which is nothing to do with the
detail of grid technology, but a design pattern related to grid
portal development.
I have established a computational grid infrastracture in my lab
using GT and relavant technology, and now I want to develop a portal
prototype. I plan to use a machine to serve as the portal server,
and end users access the grid resources through the client tool,
which use the services provided by the portal server. Currently I do
not plan to develop the Web-based Portal due to the time
limitation(I am more familiar with desktop GUI developing).
Obviously there are some issues must be addressed in the portal
server, such as certificates, job submission, access the web mds...
Well, here is my question:
Should I encapsulate those functions as several web servers which
can be deployed in the GT container (such as
SingleJobSubmissionService, ArrayJobSubmissionService,
ComputeResourcesListService...) and let the client tool access those
web services directly, or should I write a daemon on the portal
server, which listens the requests of the clients and then access
the grid infrastructure, and finally send the response to the
client, just as the classical C-S model.
Typically, people will create an application specific web service
instead of another higher-level "generic" web service. For example,
creating a web service that can remotely execute blast, see the open
life science gateway - http://lsgw.uc.teragrid.org:8080/gridsphere/gridsphere
There is some relevant documentation here on TeraGrid Gateways that I
think will be helpful to you.
http://www.teragrid.org/gateways/
I'll point out a couple links from that page, one about building a
gateway in a day using simpleGrid:
http://www.teragrid.org/gateways/developers/
http://www.teragrid.org/gateways/developers/inaday.php
There are some TG specific things in there, but in the end many use
GRAM and GridFTP underneath, so this info/code should be useful to
you too.
So, I want to disscuss it with you. Any suggestion will be much
appraciated.
Thanks!
Tracy
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