[Dart] Investigating addition of HTTP PUT submission support

[Scott W. Oster]

In the interest of offering other solutions, it seems you could always
just write and install another servlet that would do the proxying.  That
is, your new serlvet could support the HTTP PUT operation per your
specification, and simply then invoke the necessary xmlrpc submission.

Scott

 
 
Scott Oster
 
Senior Research Specialist
Biomedical Informatics Department
Ohio State University
oster at bmi.osu.edu
lab: 614-292-9845
voice mail: 614-292-8680

> -----Original Message-----
> From: dart-bounces+oster=bmi.osu.edu at public.kitware.com [mailto:dart-
> bounces+oster=bmi.osu.edu at public.kitware.com] On Behalf Of Zachary
Mark
> Sent: Monday, June 19, 2006 6:04 PM
> To: dart at public.kitware.com
> Subject: [Dart] Investigating addition of HTTP PUT submission support
> 
> This is a followup to the e-mail thread referenced at
> http://public.kitware.com/pipermail/dart/2006-June/001557.html
> 
> I am investigating the near-term feasibility (as in, beginning very
> soon) about contributing support for submissions via HTTP PUT into the
> DartServer.  This functionality is very highly desired and as such I
> would be willing to implement it myself and contribute it into the
Dart
> code base.
> 
> I've spent some of the afternoon reading through the Dart source code
> and trying to make heads and tails of it, and I think I have a basic
> design overview, and I'm looking for some of the Dart core devs to
take
> a look at my proposal and evaluate what changes could be made to my
> idea.  I am not 100% familiar with the Dart code so this is a guess
> based on what I have gleaned so far.
> 
> What I propose is that a void doPut method be added to the
> java.server.servlet.CommandServlet class with the following signature:
> 
>        public void doPut( HttpServletRequest request,
> HttpServletResponse response ) throws
>                    ServletException, IOException
> 
> I would make the assumption that all commands received via PUT are
> submission requests, rather than the much broader functionality
offered
> by xmlrpc.  The doPut method would contain a submission command object
> (dart.server.command.Submit) and call the Submit.put method directly.
> It seems that the Submit.put method should handle all the
functionality
> that I'm looking for, but there is one issue that I potentially have.
> How can I use HTTP PUT and differentiate between different projects?
> IIRC, HTTP PUT allows only one submission field which obviously should
> contain the full XML submission data.  Is there a "default project"
> setting in the Dart server that I could leverage to direct all PUT
> requests?  Could the XML format be extended so that clients can
specify
> which project to submit the results to in the XML?  Maybe this could
be
> incorporated into the <DartSubmission> tag, in the following form:
> 
>       <DartSubmission version="2.0" createdby="ReSTInstaller"
> project="SampleProject">
> 
> Since the client has to specify which project to submit the result to
in
> the first place, I don't see a reason not to potentially include it in
> the XML, unless there are some issues that I am not considering.
> 
> Sorry I got to the point of rambling, but I'm interested to hear some
> thoughts on this issue and my PUT proposal.
> 
> -- Zach
> 
> 
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