[seek-dev] Ecogrid 'Get'

Bing Zhu bzhu at sdsc.edu
Mon Jan 26 16:31:23 PST 2004

First I want to point out that using a single 'get' for file transfer seems
an immature approach
for file transfer. I expect we call RFT's API to do file transfer. But it
seems not the case
since we are using 'urlCopy' which opens another channel for file transfer
rather than
streaming data to our 'get' client.

A look at SRB's IO model will immediately tell us that we can quickly build
a 'file transfer'
using existing GT3 tools with a GSH handle. (I am not sure it will work with
approach.) This IO model is similar to our current paging handling in level
II search and
has a IO loop to stream data from server (Ecogrid data service) to client.
Some small issues
need some discussion. But a basic file transfer can be built quickly using
Java to WSDL
approach with no GSI. ( I think we can have a it done in two weeks for a

I don't know why we need to get rid of the Factory approach. Jing talked to
me this morning
about some ideas to implement our services without Factory but retain the
Handle (which is
required by Registry???).
This reminds of the effort between gt3 and WSRF in which OGSI folks want to
stay with WSDL
standard. If we are working on such solution in which each service is fully
compatible with WSDL
and still use OGSI, I think we should continue our development and let OGSI
people take care of it.
Note that GT4 is going to be released in summer 2004.


-----Original Message-----
From: seek-dev-admin at ecoinformatics.org
[mailto:seek-dev-admin at ecoinformatics.org]On Behalf Of Jing Tao
Sent: Monday, January 26, 2004 2:59 PM
To: seek-dev at ecoinformatics.org
Subject: [seek-dev] Re: [Globus-discuss] How to secure "Your first grid
service" in tutorial? (fwd)


I got an email for Borja. He is the author of gt3 tutorial. "Your
first grid sevice" is a servie which uses Provider="java:RPC" and deploy
service instance directly.

So it seems we couldn't secure the service which use provider="java.RPC".

I took a look again at the url which he pointed to. In there I downloaded
some sample code. They are all provicer="hanlder".


Jing Tao
National Center for Ecological
Analysis and Synthesis (NCEAS)
735 State St. Suite 204
Santa Barbara, CA 93101

---------- Forwarded message ----------
Date: Mon, 26 Jan 2004 23:20:08 +0100
From: Borja Sotomayor <borja at borjanet.com>
To: Jing Tao <tao at nceas.ucsb.edu>
Cc: discuss at globus.org, developer-discuss at globus.org
Subject: Re: [Globus-discuss] How to secure "Your first grid service" in


> Still doesn't work. So I am wondering how can I secure a service which has
> a  WSDD file samilar to "your first grid service" in the tutorial.

The very first example in the tutorial is not a grid service, but a
plain web service to help you get acquainted with all the steps involved
in writing GT3 grid services. It is therefore not representative of grid
service programming in GT3 (done with Ant, which is used in the rest of
the examples in the tutorial). Any attempt to add security to the very
first example of the tutorial is likely to fail. If you are interested
in writing secure grid services, please take a look at the "work in
progress" version of the tutorial (which now includes sections on security)


Borja Sotomayor, Universidad de Deusto
  Assistant Professor, Department of Software Engineering
  ESIDE, Sala Prof, Av.Universidades 24, 48007 Bilbao (Spain)
  phone: +34-94-413-9000 (ext.2724)  fax: +34-94-413-9101
GT3 Tutorial: http://www.casa-sotomayor.net/gt3-tutorial/
BorjaNet:  http://www.borjanet.com/   borja at borjanet.com
                  "I drank WHAT???" (Socrates)

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