[Swift-devel] Re: Hostnames vs BoundContacts in vdl-int.k

[Michael Wilde]

OK, I think I get it. The "host" argument to doStagein and doStageOut is a BoundContact (ie, a "site" or pool entry).  The dhost and srchost parameters that those elements pass down to the lower level elements are computed from filename arguments and are simple strings.

- Mike

----- Original Message -----
> Im trying to extend Justin's initial cut of "external" CDM file types
> to connect to Globus Online.
> 
> The current code in trunk only handles input. Im trying to hook it
> into doStageOut as well.
> 
> Im making progress but stuck at the moment on passing hosts from
> vdl-int.k into the CDM external java functions.
> 
> Specifically I'm getting a string as a hostname argument to the
> cdm:external() element, where its expecting a "BoundContact". It pulls
> its args off the Karajan stack as follows:
> ---
> public void cdm_external(VariableStack stack)
> throws ExecutionException
> {
> String provider = (String) PA_PROVIDER.getValue(stack);
> String srchost = (String) PA_SRCHOST.getValue(stack);
> String srcfile = (String) PA_SRCFILE.getValue(stack);
> String srcdir = (String) PA_SRCDIR.getValue(stack);
> BoundContact bc = (BoundContact) PA_DESTHOST.getValue(stack);
> String destdir = (String) PA_DESTDIR.getValue(stack);
> ---
> 
> Is it the case that within vdl-int.k some host variables are simple
> strings (site names) whereas others are structured objects
> representing the site?
> 
> I'm having difficulty tracing this and would appreciate any guidance
> you can offer.
> 
> Thanks,
> 
> Mike
> 
> 
> --
> Michael Wilde
> Computation Institute, University of Chicago
> Mathematics and Computer Science Division
> Argonne National Laboratory

-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory