Christian Mayer writes:
>
> "Curtis L. Olson" wrote:
> >
> > Christian Mayer writes:
> > > > Except, as Curt has already pointed out, rsync is more than just a
> > > > file transfer protocol ... its functionality would need to be duplicated
> > > > in FG/SG/plib before http could be used.
> > >
> > > The missing functionality is the ability to figure out if the tile has
> > > changed IIRC.
> > >
> > > But that'n no problem - HTTP already supports that. IIRC it send's a
> > > status code of 302 if the reqested data didn't change...
> >
> > We could continue to work on an entire directory level to avoid this
> > problem, but the client side is still going to have to do all the work
> > of rsync.
>
> We can do it directory wise.
we don't need rsync all we need is SMART ftp in a thread
i.e in Python
def download_if_newer(self, source, target, mode=''):
"""
Download a file only if it's newer than the target on the
local host or if the target file does not exist.
"""
source_timestamp = self.path.getmtime(source)
if os.path.exists(target):
target_timestamp = os.path.getmtime(target)
else:
# every timestamp is newer than this one
target_timestamp = 0.0
if source_timestamp > target_timestamp:
self.download(source, target, mode)
FWIW
I have started prototyping a Python version using these
http://c0re.jp/c0de/ftpparsemodule/
http://www.ndh.net/home/sschwarzer/python/ftputil.html
eventually I think a combination of
http://cr.yp.to/ftpparse.html
and PLIBs net library will be all we need to build this
however in the long run I would like to see an xml-rpc
implemetation as this would be much more flexible
Cheers
Norman
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