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Viewing changes to breezy/bzrrepository.py

  • Committer: Jelmer Vernooij
  • Date: 2017-06-05 23:35:09 UTC
  • mfrom: (6658 work)
  • mto: (6653.3.3 bzrwt)
  • mto: This revision was merged to the branch mainline in revision 6667.
  • Revision ID: jelmer@jelmer.uk-20170605233509-30wo916k6meuggqf
Merge lp:brz

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breezy/bzrrepository.py
 
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# Copyright (C) 2005-2011 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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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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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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from __future__ import absolute_import
 
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import itertools
 
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from . import (
 
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    bzrdir,
 
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    errors,
 
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    lockdir,
 
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    lockable_files,
 
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    revision as _mod_revision,
 
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    )
 
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from .decorators import needs_read_lock, needs_write_lock, only_raises
 
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from .repository import (
 
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    format_registry,
 
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    Repository,
 
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    RepositoryFormat,
 
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    )
 
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35
 
 
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class MetaDirRepository(Repository):
 
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    """Repositories in the new meta-dir layout.
 
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    :ivar _transport: Transport for access to repository control files,
 
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        typically pointing to .bzr/repository.
 
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    """
 
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    def __init__(self, _format, a_bzrdir, control_files):
 
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        super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
 
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        self._transport = control_files._transport
 
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    def is_shared(self):
 
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        """Return True if this repository is flagged as a shared repository."""
 
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        return self._transport.has('shared-storage')
 
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    @needs_write_lock
 
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    def set_make_working_trees(self, new_value):
 
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        """Set the policy flag for making working trees when creating branches.
 
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        This only applies to branches that use this repository.
 
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        The default is 'True'.
 
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        :param new_value: True to restore the default, False to disable making
 
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                          working trees.
 
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        """
 
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        if new_value:
 
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            try:
 
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                self._transport.delete('no-working-trees')
 
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            except errors.NoSuchFile:
 
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                pass
 
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        else:
 
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            self._transport.put_bytes('no-working-trees', '',
 
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                mode=self.bzrdir._get_file_mode())
 
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    def make_working_trees(self):
 
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        """Returns the policy for making working trees on new branches."""
 
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        return not self._transport.has('no-working-trees')
 
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    @needs_write_lock
 
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    def update_feature_flags(self, updated_flags):
 
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        """Update the feature flags for this branch.
 
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        :param updated_flags: Dictionary mapping feature names to necessities
 
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            A necessity can be None to indicate the feature should be removed
 
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        """
 
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        self._format._update_feature_flags(updated_flags)
 
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        self.control_transport.put_bytes('format', self._format.as_string())
 
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    def _find_parent_ids_of_revisions(self, revision_ids):
 
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        """Find all parent ids that are mentioned in the revision graph.
 
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        :return: set of revisions that are parents of revision_ids which are
 
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            not part of revision_ids themselves
 
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        """
 
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        parent_ids = set(itertools.chain.from_iterable(viewvalues(
 
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                self.get_parent_map(revision_ids))))
 
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        parent_ids.difference_update(revision_ids)
 
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        parent_ids.discard(_mod_revision.NULL_REVISION)
 
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        return parent_ids
 
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class RepositoryFormatMetaDir(bzrdir.BzrFormat, RepositoryFormat):
 
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    """Common base class for the new repositories using the metadir layout."""
 
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    rich_root_data = False
 
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    supports_tree_reference = False
 
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    supports_external_lookups = False
 
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    supports_leaving_lock = True
 
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    supports_nesting_repositories = True
 
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    @property
 
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    def _matchingbzrdir(self):
 
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        matching = bzrdir.BzrDirMetaFormat1()
 
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        matching.repository_format = self
 
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        return matching
 
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    def __init__(self):
 
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        RepositoryFormat.__init__(self)
 
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        bzrdir.BzrFormat.__init__(self)
 
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    def _create_control_files(self, a_bzrdir):
 
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        """Create the required files and the initial control_files object."""
 
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        # FIXME: RBC 20060125 don't peek under the covers
 
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        # NB: no need to escape relative paths that are url safe.
 
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        repository_transport = a_bzrdir.get_repository_transport(self)
 
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        control_files = lockable_files.LockableFiles(repository_transport,
 
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                                'lock', lockdir.LockDir)
 
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        control_files.create_lock()
 
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        return control_files
 
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126
    def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
 
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        """Upload the initial blank content."""
 
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        control_files = self._create_control_files(a_bzrdir)
 
129
        control_files.lock_write()
 
130
        transport = control_files._transport
 
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        if shared == True:
 
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            utf8_files += [('shared-storage', '')]
 
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        try:
 
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            transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
 
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            for (filename, content_stream) in files:
 
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                transport.put_file(filename, content_stream,
 
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                    mode=a_bzrdir._get_file_mode())
 
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            for (filename, content_bytes) in utf8_files:
 
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                transport.put_bytes_non_atomic(filename, content_bytes,
 
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                    mode=a_bzrdir._get_file_mode())
 
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        finally:
 
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            control_files.unlock()
 
143
 
 
144
    @classmethod
 
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    def find_format(klass, a_bzrdir):
 
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        """Return the format for the repository object in a_bzrdir.
 
147
 
 
148
        This is used by brz native formats that have a "format" file in
 
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        the repository.  Other methods may be used by different types of
 
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        control directory.
 
151
        """
 
152
        try:
 
153
            transport = a_bzrdir.get_repository_transport(None)
 
154
            format_string = transport.get_bytes("format")
 
155
        except errors.NoSuchFile:
 
156
            raise errors.NoRepositoryPresent(a_bzrdir)
 
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        return klass._find_format(format_registry, 'repository', format_string)
 
158
 
 
159
    def check_support_status(self, allow_unsupported, recommend_upgrade=True,
 
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            basedir=None):
 
161
        RepositoryFormat.check_support_status(self,
 
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            allow_unsupported=allow_unsupported, recommend_upgrade=recommend_upgrade,
 
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            basedir=basedir)
 
164
        bzrdir.BzrFormat.check_support_status(self, allow_unsupported=allow_unsupported,
 
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            recommend_upgrade=recommend_upgrade, basedir=basedir)
 
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