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# Copyright (C) 2010 Canonical Ltd
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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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# 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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# 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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"""Weave-era branch implementations."""
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from __future__ import absolute_import
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from bzrlib.decorators import (
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from bzrlib.lock import LogicalLockResult
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from bzrlib.trace import mutter
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from bzrlib.branch import (
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BranchWriteLockResult,
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from bzrlib.branchfmt.fullhistory import (
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class BzrBranch4(FullHistoryBzrBranch):
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"""Branch format 4."""
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def lock_write(self, token=None):
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"""Lock the branch for write operations.
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:param token: A token to permit reacquiring a previously held and
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:return: A BranchWriteLockResult.
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if not self.is_locked():
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# All-in-one needs to always unlock/lock.
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self.repository._warn_if_deprecated(self)
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self.repository.lock_write()
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return BranchWriteLockResult(self.unlock,
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self.control_files.lock_write(token=token))
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self.repository.unlock()
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"""Lock the branch for read operations.
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:return: A bzrlib.lock.LogicalLockResult.
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if not self.is_locked():
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# All-in-one needs to always unlock/lock.
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self.repository._warn_if_deprecated(self)
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self.repository.lock_read()
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self.control_files.lock_read()
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return LogicalLockResult(self.unlock)
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self.repository.unlock()
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@only_raises(errors.LockNotHeld, errors.LockBroken)
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if self.control_files._lock_count == 2 and self.conf_store is not None:
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self.conf_store.save_changes()
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self.control_files.unlock()
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# All-in-one needs to always unlock/lock.
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self.repository.unlock()
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if not self.control_files.is_locked():
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# we just released the lock
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self._clear_cached_state()
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def _get_checkout_format(self, lightweight=False):
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"""Return the most suitable metadir for a checkout of this branch.
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from bzrlib.plugins.weave_fmt.repository import RepositoryFormat7
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from bzrlib.bzrdir import BzrDirMetaFormat1
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format = BzrDirMetaFormat1()
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format.set_branch_format(self._format)
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format.repository_format = self.bzrdir._format.repository_format
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format.repository_format = RepositoryFormat7()
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raise errors.UpgradeRequired(self.user_url)
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def bind(self, other):
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raise errors.UpgradeRequired(self.user_url)
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def set_bound_location(self, location):
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raise NotImplementedError(self.set_bound_location)
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def get_bound_location(self):
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def get_master_branch(self, possible_transports=None):
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class BzrBranchFormat4(BranchFormat):
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"""Bzr branch format 4.
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- a revision-history file.
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- a branch-lock lock file [ to be shared with the bzrdir ]
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It does not support binding.
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def initialize(self, a_bzrdir, name=None, repository=None,
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append_revisions_only=None):
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"""Create a branch of this format in a_bzrdir.
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:param a_bzrdir: The bzrdir to initialize the branch in
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:param name: Name of colocated branch to create, if any
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:param repository: Repository for this branch (unused)
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if append_revisions_only:
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raise errors.UpgradeRequired(a_bzrdir.user_url)
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if repository is not None:
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raise NotImplementedError(
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"initialize(repository=<not None>) on %r" % (self,))
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if not [isinstance(a_bzrdir._format, format) for format in
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self._compatible_bzrdirs]:
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raise errors.IncompatibleFormat(self, a_bzrdir._format)
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utf8_files = [('revision-history', ''),
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mutter('creating branch %r in %s', self, a_bzrdir.user_url)
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branch_transport = a_bzrdir.get_branch_transport(self, name=name)
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control_files = lockable_files.LockableFiles(branch_transport,
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'branch-lock', lockable_files.TransportLock)
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control_files.create_lock()
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control_files.lock_write()
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except errors.LockContention:
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for (filename, content) in utf8_files:
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branch_transport.put_bytes(
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mode=a_bzrdir._get_file_mode())
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control_files.unlock()
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branch = self.open(a_bzrdir, name, _found=True,
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found_repository=None)
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self._run_post_branch_init_hooks(a_bzrdir, name, branch)
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super(BzrBranchFormat4, self).__init__()
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from bzrlib.plugins.weave_fmt.bzrdir import (
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BzrDirFormat4, BzrDirFormat5, BzrDirFormat6,
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self._matchingbzrdir = BzrDirFormat6()
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self._compatible_bzrdirs = [BzrDirFormat4, BzrDirFormat5,
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def network_name(self):
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"""The network name for this format is the control dirs disk label."""
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return self._matchingbzrdir.get_format_string()
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def get_format_description(self):
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return "Branch format 4"
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def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False,
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found_repository=None, possible_transports=None):
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"""See BranchFormat.open()."""
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name = a_bzrdir._get_selected_branch()
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raise errors.NoColocatedBranchSupport(self)
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# we are being called directly and must probe.
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raise NotImplementedError
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if found_repository is None:
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found_repository = a_bzrdir.open_repository()
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return BzrBranch4(_format=self,
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_control_files=a_bzrdir._control_files,
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_repository=found_repository,
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possible_transports=possible_transports)
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return "Bazaar-NG branch format 4"
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def supports_leaving_lock(self):
added
removed
bzrlib/plugins/weave_fmt/branch.py
