Tailors,
I've been playing around with the subversion convertor which fails at
rev. 6k or so on a repository we have at work, and is very slow. Let's
see what happens when we do not have to shell out.
As my test corpus, I have used 'svnsync' as provided by svn 1.4 or the
development version of subversion (has a better Python API) to clone the
first several thousand revisions of the subversion repository.
Bootstrap time: 30 seconds.
To revision 280 (278 actual revisions), at which point the current patch
will fail:
37 seconds (dodgy protoype usage of the api)
6m 16sec (shelling out)
It is 10x faster when using the API.
Thought you might find that interesting. I am trying to understand how
Tailor works, and am also interested in shortcutting straight from the
subversion API to the mercurial API to avoid having to use the working
copy. I am impressed with Subversion's streaming diff API, it calls your
code back to say "copy this file, edit this file, create this directory"
and so forth.
- Daniel Holth
353a354,410
> return self._applyChangesetCommand(changeset)
> return self._applyChangesetAPI(changeset)
>
>
> def _applyChangesetAPI(self, changeset):
> """
> Apply changeset (wicked-fast API version)
> """
> from trac.log import logger_factory
> from trac.versioncontrol.svn_fs import SubversionRepository
> import os
>
> repo = getattr(self, 'repo', None)
>
> if repo is None:
> print "repository is %s" % (self.repository.repository,)
> print "module is %s" % (self.repository.module,)
> print "trac wants to see %s" % (self.repository.repository[len("file://"):],)
> path = self.repository.repository[len("file://"):]
> repo = SubversionRepository(path, None, logger_factory('tailor'))
> self.repo = repo
>
> chgset = repo.get_changeset(changeset.revision)
> for ch in chgset.get_changes():
> # ('trunk/www/webdav-usage.html', 'file', 'add', None, -1)
> path, kind, action, frompath, fromrev = ch
> # take module name off path
> svnpath = path
> path = path[len(self.repository.module):].lstrip("/")
> make = os.path.join(self.repository.basedir, path)
> print "apply", ch
> if kind == 'dir':
> if action != 'add':
> raise NotImplementedError("Can't %s %s %s %s %s" % (action, kind, ch, changeset.revision, type(changeset.revision)))
> os.mkdir(make)
> elif kind == 'file':
> filename = make
> if action == 'delete':
> # delete it!
> os.remove(filename)
> elif action in ('add', 'edit'):
> node = repo.get_node(svnpath, changeset.revision)
> target = file(filename, "w+")
> target.write(node.get_content().read())
> target.close()
> else:
> raise NotImplementedError("Can't %s %s %s" % (action, kind, ch))
> else:
> print "Delegating %s" % (ch,)
> # Bail out to command line version.
> return self._applyChangesetCommand(self, changeset)
>
>
> def _applyChangesetCommand(self, changeset):
> """
> Apply changeset (command line version)
> """
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