[gt-user] A Design Question about Portal Development

[Stuart Martin]

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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