Anyone watching the commits yesterday may have noticed that DongInn
converted all the config.xml files on his database development branch
to a slightly different format. This is the result of work at ORNL to
make a "better" XML specification for our config.xml files -- the
format is stricter and more defined than the current set of config.xml
files (I'm afraid that I don't remember the names of the people at ORNL
who helped with this -- John Mugler can cite the appropriate credits
here). It allows us to "verify" a config.xml file before attempting to
read it in an parse it.
The new format is roughly the same, but you'll notice three things
immediately:
- the header at the top is different
- the XML tag names are longer
- the filter specifications are slightly different
John Mugler can provide a much better description of exactly what
changed and why. The short version is that we'll be changing the OSCAR
code base to validate a config.xml before attempting to parse it and
read it into the database. If the file does not validate properly,
we'll skip the entire package (thanks for playing!).
For example, check out what happened to LAM's config.xml:
http://svn.oscar.openclustergroup.org/websvn/filedetails.php?
repname=OSCAR&path=%2Fbranches%2Foscar-db-
devel3%2Fpackages%2Flam%2Fconfig.xml&rev=0&sc=0
As part of the the ORNL/IU meeting a month or two ago, John and I spent
an hour and wrote a perl scripty-foo to convert the current
config.xml's to the new, stricter format. DongInn ran that on all the
config.xml's in his branch yesterday, and is working on updating the
code to parse in this new format. It should be done soon.
I don't think that John committed all his notes / the verification code
in (I remember writing the conversion script based on a file that
strictly specified the format for the OSCAR config.xml files, but I
can't find that now). Hopefully, we'll get that soon.
We anticipate bringing this stuff over to the trunk once 4.2 stabilizes
and we start working on 5.0 (i.e., Real Soon Now).
--
{+} Jeff Squyres
{+} The Open MPI Project
{+} http://www.open-mpi.org/
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