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Viewing changes to bzrlib/plugins/launchpad/lp_indirect.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2007-11-12 21:23:07 UTC
  • mfrom: (2898.4.17 bzr.lp-urls-bug-121200)
  • Revision ID: pqm@pqm.ubuntu.com-20071112212307-eusj64ymto8l9abk
(robertc) Improved lp:/// URL support for the Launchpad plugin (James Henstridge).

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bzrlib/plugins/launchpad/lp_indirect.py
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# Copyright (C) 2007-2010 Canonical Ltd
 
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# Copyright (C) 2007 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Directory lookup that uses Launchpad."""
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from urlparse import urlsplit
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""Transport indirection that uses Launchpad as a directory lookup.
 
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When the transport is opened, it immediately redirects to a url
 
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on Launchpad, which can then either serve the branch itself or redirect
 
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again.
 
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"""
 
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from urlparse import urlsplit, urlunsplit
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import xmlrpclib
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from bzrlib import (
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    debug,
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    errors,
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    trace,
 
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    urlutils,
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    )
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from bzrlib.transport import (
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    get_transport,
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    register_urlparse_netloc_protocol,
 
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    Transport,
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    )
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from bzrlib.plugins.launchpad.lp_registration import (
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register_urlparse_netloc_protocol('lp')
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class LaunchpadDirectory(object):
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    def _requires_launchpad_login(self, scheme, netloc, path, query,
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                                  fragment):
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        """Does the URL require a Launchpad login in order to be reached?
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        The URL is specified by its parsed components, as returned from
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        urlsplit.
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        """
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        return (scheme in ('bzr+ssh', 'sftp')
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                and (netloc.endswith('launchpad.net')
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                     or netloc.endswith('launchpad.dev')))
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    def look_up(self, name, url):
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        """See DirectoryService.look_up"""
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        return self._resolve(url)
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    def _resolve(self, url,
 
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class LaunchpadTransport(Transport):
 
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    """lp:/// URL transport
 
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    This transport redirects requests to the real branch location
 
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    after resolving the URL via an XMLRPC request to Launchpad.
 
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    """
 
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    def __init__(self, base):
 
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        super(LaunchpadTransport, self).__init__(base)
 
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        # We only support URLs without a netloc
 
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        netloc = urlsplit(base)[1]
 
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        if netloc != '':
 
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            raise errors.InvalidURL(path=base)
 
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    def _resolve(self, abspath,
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                 _request_factory=ResolveLaunchpadPathRequest,
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                 _lp_login=None):
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        """Resolve the base URL for this transport."""
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        service = LaunchpadService.for_url(url)
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        result = urlsplit(url)
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        resolve = _request_factory(result[2].strip('/'))
 
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        path = urlsplit(abspath)[2].lstrip('/')
 
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        # Perform an XMLRPC request to resolve the path
 
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        resolve = _request_factory(path)
 
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        service = LaunchpadService()
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        try:
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            result = resolve.submit(service)
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        except xmlrpclib.Fault, fault:
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            raise errors.InvalidURL(
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                path=url, extra=fault.faultString)
 
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                path=abspath, extra=fault.faultString)
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        if 'launchpad' in debug.debug_flags:
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            trace.mutter("resolve_lp_path(%r) == %r", url, result)
 
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            trace.mutter("resolve_lp_path(%r) == %r", path, result)
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        if _lp_login is None:
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            _lp_login = get_lp_login()
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        _warned_login = False
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        for url in result['urls']:
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            scheme, netloc, path, query, fragment = urlsplit(url)
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            if self._requires_launchpad_login(scheme, netloc, path, query,
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                                              fragment):
 
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            if scheme == 'bzr+ssh' and (netloc.endswith('launchpad.net') or
 
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                                        netloc.endswith('launchpad.dev')):
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                # Only accept launchpad.net bzr+ssh URLs if we know
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                # the user's Launchpad login:
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                if _lp_login is not None:
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                    break
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                if _lp_login is None:
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                    if not _warned_login:
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                        trace.warning(
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'You have not informed bzr of your Launchpad ID, and you must do this to\n'
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'write to Launchpad or access private data.  See "bzr help launchpad-login".')
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                        _warned_login = True
 
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                    continue
 
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                url = urlunsplit((scheme, '%s@%s' % (_lp_login, netloc),
 
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                                  path, query, fragment))
 
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                break
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            else:
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                # Use the URL if we can create a transport for it.
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                try:
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                else:
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                    break
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        else:
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            raise errors.InvalidURL(path=url, extra='no supported schemes')
 
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            raise errors.InvalidURL(path=abspath,
 
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                                    extra='no supported schemes')
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        return url
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    def _request_redirect(self, relpath):
 
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        source = urlutils.join(self.base, relpath)
 
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        # Split the source location into the branch location, and the
 
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        # extra path components.
 
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        pos = source.find('/.bzr/')
 
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        if pos >= 0:
 
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            branchpath = source[:pos]
 
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            extra = source[pos:]
 
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        else:
 
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            branchpath = source
 
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            extra = ''
 
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        target = self._resolve(branchpath) + extra
 
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        raise errors.RedirectRequested(
 
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            source=source,
 
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            target=target)
 
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    def get(self, relpath):
 
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        """See Transport.get()."""
 
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        self._request_redirect(relpath)
 
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    def mkdir(self, relpath, mode=None):
 
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        """See Transport.mkdir()."""
 
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        self._request_redirect(relpath)
 
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def get_test_permutations():
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    # Since this transport doesn't do anything once opened, it's not subjected