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  • Committer: Andrew Bennetts
  • Date: 2010-04-13 04:33:55 UTC
  • mfrom: (5147 +trunk)
  • mto: This revision was merged to the branch mainline in revision 5149.
  • Revision ID: andrew.bennetts@canonical.com-20100413043355-lg3id0uwtju0k3zs
Merge lp:bzr.

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bzrlib/upgrade.py
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# Copyright (C) 2005, 2008 Canonical Ltd
 
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# Copyright (C) 2005, 2006, 2008, 2009, 2010 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""bzr upgrade logic."""
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# change upgrade from .bzr to create a '.bzr-new', then do a bait and switch.
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from bzrlib.bzrdir import ConvertBzrDir4To5, ConvertBzrDir5To6, BzrDir, BzrDirFormat4, BzrDirFormat5, BzrDirFormat
 
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from bzrlib.bzrdir import BzrDir, format_registry
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import bzrlib.errors as errors
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from bzrlib.remote import RemoteBzrDir
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from bzrlib.transport import get_transport
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import bzrlib.ui as ui
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class Convert(object):
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    def __init__(self, url, format):
 
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    def __init__(self, url, format=None):
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        self.format = format
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        self.bzrdir = BzrDir.open_unsupported(url)
 
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        # XXX: Change to cleanup
 
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        warning_id = 'cross_format_fetch'
 
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        saved_warning = warning_id in ui.ui_factory.suppressed_warnings
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        if isinstance(self.bzrdir, RemoteBzrDir):
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            self.bzrdir._ensure_real()
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            self.bzrdir = self.bzrdir._real_bzrdir
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        if self.bzrdir.root_transport.is_readonly():
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            raise errors.UpgradeReadonly
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        self.transport = self.bzrdir.root_transport
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        self.pb = ui.ui_factory.nested_progress_bar()
 
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        ui.ui_factory.suppressed_warnings.add(warning_id)
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        try:
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            self.convert()
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        finally:
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            self.pb.finished()
 
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            if not saved_warning:
 
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                ui.ui_factory.suppressed_warnings.remove(warning_id)
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    def convert(self):
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        try:
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            branch = self.bzrdir.open_branch()
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            if branch.bzrdir.root_transport.base != \
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                self.bzrdir.root_transport.base:
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                self.pb.note("This is a checkout. The branch (%s) needs to be "
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                             "upgraded separately.",
 
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                ui.ui_factory.note("This is a checkout. The branch (%s) needs to be "
 
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                             "upgraded separately." %
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                             branch.bzrdir.root_transport.base)
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            del branch
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        except (errors.NotBranchError, errors.IncompatibleRepositories):
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            # might not be a format we can open without upgrading; see e.g. 
 
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            # might not be a format we can open without upgrading; see e.g.
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            # https://bugs.launchpad.net/bzr/+bug/253891
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            pass
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        if not self.bzrdir.needs_format_conversion(self.format):
 
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        if self.format is None:
 
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            try:
 
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                rich_root = self.bzrdir.find_repository()._format.rich_root_data
 
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            except errors.NoRepositoryPresent:
 
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                rich_root = False # assume no rich roots
 
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            if rich_root:
 
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                format_name = "default-rich-root"
 
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            else:
 
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                format_name = "default"
 
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            format = format_registry.make_bzrdir(format_name)
 
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        else:
 
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            format = self.format
 
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        if not self.bzrdir.needs_format_conversion(format):
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            raise errors.UpToDateFormat(self.bzrdir._format)
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        if not self.bzrdir.can_convert_format():
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            raise errors.BzrError("cannot upgrade from bzrdir format %s" %
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                           self.bzrdir._format)
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        if self.format is None:
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            target_format = BzrDirFormat.get_default_format()
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        else:
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            target_format = self.format
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        self.bzrdir.check_conversion_target(target_format)
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        self.pb.note('starting upgrade of %s', self.transport.base)
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        self._backup_control_dir()
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        while self.bzrdir.needs_format_conversion(self.format):
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            converter = self.bzrdir._format.get_converter(self.format)
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            self.bzrdir = converter.convert(self.bzrdir, self.pb)
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        self.pb.note("finished")
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    def _backup_control_dir(self):
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        self.pb.note('making backup of tree history')
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        self.transport.copy_tree('.bzr', 'backup.bzr')
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        self.pb.note('%s.bzr has been backed up to %sbackup.bzr',
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             self.transport.base,
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             self.transport.base)
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        self.pb.note('if conversion fails, you can move this directory back to .bzr')
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        self.pb.note('if it succeeds, you can remove this directory if you wish')
 
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        self.bzrdir.check_conversion_target(format)
 
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        ui.ui_factory.note('starting upgrade of %s' % self.transport.base)
 
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        self.bzrdir.backup_bzrdir()
 
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        while self.bzrdir.needs_format_conversion(format):
 
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            converter = self.bzrdir._format.get_converter(format)
 
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            self.bzrdir = converter.convert(self.bzrdir, None)
 
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        ui.ui_factory.note("finished")
 
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def upgrade(url, format=None):
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    """Upgrade to format, or the default bzrdir format if not supplied."""