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# Copyright (C) 2005-2012 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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from .lazy_import import lazy_import
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lazy_import(globals(), """
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config as _mod_config,
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revision as _mod_revision,
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from breezy.bzr import (
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from breezy.i18n import gettext, ngettext
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from .hooks import Hooks
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from .inter import InterObject
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from .lock import LogicalLockResult
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from .trace import mutter, mutter_callsite, note, is_quiet, warning
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class UnstackableBranchFormat(errors.BzrError):
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_fmt = ("The branch '%(url)s'(%(format)s) is not a stackable format. "
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"You will need to upgrade the branch to permit branch stacking.")
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def __init__(self, format, url):
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errors.BzrError.__init__(self)
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class Branch(controldir.ControlComponent):
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"""Branch holding a history of revisions.
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Base directory/url of the branch; using control_url and
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control_transport is more standardized.
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:ivar hooks: An instance of BranchHooks.
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:ivar _master_branch_cache: cached result of get_master_branch, see
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# this is really an instance variable - FIXME move it there
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def control_transport(self):
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return self._transport
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def user_transport(self):
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return self.controldir.user_transport
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def __init__(self, possible_transports=None):
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self.tags = self._format.make_tags(self)
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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self._partial_revision_id_to_revno_cache = {}
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self._partial_revision_history_cache = []
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self._last_revision_info_cache = None
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self._master_branch_cache = None
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self._merge_sorted_revisions_cache = None
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self._open_hook(possible_transports)
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hooks = Branch.hooks['open']
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def _open_hook(self, possible_transports):
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"""Called by init to allow simpler extension of the base class."""
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def _activate_fallback_location(self, url, possible_transports):
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"""Activate the branch/repository from url as a fallback repository."""
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for existing_fallback_repo in self.repository._fallback_repositories:
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if existing_fallback_repo.user_url == url:
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# This fallback is already configured. This probably only
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# happens because ControlDir.sprout is a horrible mess. To
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# avoid confusing _unstack we don't add this a second time.
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mutter('duplicate activation of fallback %r on %r', url, self)
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repo = self._get_fallback_repository(url, possible_transports)
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if repo.has_same_location(self.repository):
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raise errors.UnstackableLocationError(self.user_url, url)
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self.repository.add_fallback_repository(repo)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(
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self.repository._format, self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == \
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_mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = controldir.ControlDir.open(
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base, possible_transports=possible_transports,
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_unsupported=_unsupported)
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return control.open_branch(
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unsupported=_unsupported,
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possible_transports=possible_transports)
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def open_from_transport(transport, name=None, _unsupported=False,
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possible_transports=None):
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"""Open the branch rooted at transport"""
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control = controldir.ControlDir.open_from_transport(
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transport, _unsupported)
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return control.open_branch(
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name=name, unsupported=_unsupported,
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possible_transports=possible_transports)
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def open_containing(url, possible_transports=None):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an
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unsupported format, UnknownFormatError or UnsupportedFormatError are
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raised. If there is one, it is returned, along with the unused portion
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control, relpath = controldir.ControlDir.open_containing(
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url, possible_transports)
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branch = control.open_branch(possible_transports=possible_transports)
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return (branch, relpath)
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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def get_config(self):
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"""Get a breezy.config.BranchConfig for this Branch.
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This can then be used to get and set configuration options for the
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:return: A breezy.config.BranchConfig.
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return _mod_config.BranchConfig(self)
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def get_config_stack(self):
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"""Get a breezy.config.BranchStack for this Branch.
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This can then be used to get and set configuration options for the
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:return: A breezy.config.BranchStack.
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return _mod_config.BranchStack(self)
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def store_uncommitted(self, creator):
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"""Store uncommitted changes from a ShelfCreator.
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:param creator: The ShelfCreator containing uncommitted changes, or
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None to delete any stored changes.
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:raises: ChangesAlreadyStored if the branch already has changes.
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raise NotImplementedError(self.store_uncommitted)
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def get_unshelver(self, tree):
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"""Return a shelf.Unshelver for this branch and tree.
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:param tree: The tree to use to construct the Unshelver.
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:return: an Unshelver or None if no changes are stored.
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raise NotImplementedError(self.get_unshelver)
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def _get_fallback_repository(self, url, possible_transports):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url, possible_transports=possible_transports)
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return a_branch.repository
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master and self.user_url == master.user_url:
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raise errors.RecursiveBind(self.user_url)
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if master is not None:
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# return the master branch value
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except errors.RecursiveBind as e:
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except errors.BzrError as e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map
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and len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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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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raise NotImplementedError(self.lock_write)
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"""Lock the branch for read operations.
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:return: A breezy.lock.LogicalLockResult.
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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with self.lock_read():
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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except errors.RevisionNotPresent as e:
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raise errors.GhostRevisionsHaveNoRevno(revno[0], e.revision_id)
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.items()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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with self.lock_read():
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if 'evil' in debug.debug_flags:
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3, "get_revision_id_to_revno_map scales with ancestry.")
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with self.lock_read():
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be
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# I would rather not, and instead just declare that users should
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# not modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = {
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rev_id: revno for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions()}
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None,
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stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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* 'with-merges-without-common-ancestry' - filter out revisions
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that are in both ancestries
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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with self.lock_read():
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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# Make sure we don't return revisions that are not part of the
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# start_revision_id ancestry.
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filtered = self._filter_start_non_ancestors(filtered)
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if direction == 'reverse':
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if direction == 'forward':
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return reversed(list(filtered))
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raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id,
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"""Iterate over an inclusive range of sorted revisions."""
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rev_iter = iter(merge_sorted_revisions)
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if start_revision_id is not None:
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for node in rev_iter:
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if rev_id != start_revision_id:
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# The decision to include the start or not
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# depends on the stop_rule if a stop is provided
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# so pop this node back into the iterator
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rev_iter = itertools.chain(iter([node]), rev_iter)
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if stop_revision_id is None:
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for node in rev_iter:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'exclude':
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for node in rev_iter:
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if rev_id == stop_revision_id:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'include':
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for node in rev_iter:
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yield (rev_id, node.merge_depth, node.revno,
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if rev_id == stop_revision_id:
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elif stop_rule == 'with-merges-without-common-ancestry':
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# We want to exclude all revisions that are already part of the
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# stop_revision_id ancestry.
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graph = self.repository.get_graph()
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ancestors = graph.find_unique_ancestors(start_revision_id,
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for node in rev_iter:
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if rev_id not in ancestors:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'with-merges':
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stop_rev = self.repository.get_revision(stop_revision_id)
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if stop_rev.parent_ids:
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left_parent = stop_rev.parent_ids[0]
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left_parent = _mod_revision.NULL_REVISION
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# left_parent is the actual revision we want to stop logging at,
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# since we want to show the merged revisions after the stop_rev too
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reached_stop_revision_id = False
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revision_id_whitelist = []
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for node in rev_iter:
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if rev_id == left_parent:
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# reached the left parent after the stop_revision
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if (not reached_stop_revision_id
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or rev_id in revision_id_whitelist):
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yield (rev_id, node.merge_depth, node.revno,
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if reached_stop_revision_id or rev_id == stop_revision_id:
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# only do the merged revs of rev_id from now on
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rev = self.repository.get_revision(rev_id)
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reached_stop_revision_id = True
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revision_id_whitelist.extend(rev.parent_ids)
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raise ValueError('invalid stop_rule %r' % stop_rule)
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def _filter_start_non_ancestors(self, rev_iter):
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# If we started from a dotted revno, we want to consider it as a tip
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# and don't want to yield revisions that are not part of its
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# ancestry. Given the order guaranteed by the merge sort, we will see
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# uninteresting descendants of the first parent of our tip before the
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first = next(rev_iter)
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except StopIteration:
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(rev_id, merge_depth, revno, end_of_merge) = first
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# We start at a mainline revision so by definition, all others
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# revisions in rev_iter are ancestors
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for node in rev_iter:
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pmap = self.repository.get_parent_map([rev_id])
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parents = pmap.get(rev_id, [])
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whitelist.update(parents)
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# If there is no parents, there is nothing of interest left
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# FIXME: It's hard to test this scenario here as this code is never
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# called in that case. -- vila 20100322
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for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
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if rev_id in whitelist:
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pmap = self.repository.get_parent_map([rev_id])
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parents = pmap.get(rev_id, [])
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whitelist.remove(rev_id)
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whitelist.update(parents)
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# We've reached the mainline, there is nothing left to
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# A revision that is not part of the ancestry of our
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yield (rev_id, merge_depth, revno, end_of_merge)
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def leave_lock_in_place(self):
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"""Tell this branch object not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this branch object to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not
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self.control_files.dont_leave_in_place()
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def bind(self, other):
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"""Bind the local branch the other branch.
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:param other: The branch to bind to
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raise errors.UpgradeRequired(self.user_url)
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def get_append_revisions_only(self):
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"""Whether it is only possible to append revisions to the history.
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if not self._format.supports_set_append_revisions_only():
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return self.get_config_stack().get('append_revisions_only')
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def set_append_revisions_only(self, enabled):
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if not self._format.supports_set_append_revisions_only():
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raise errors.UpgradeRequired(self.user_url)
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self.get_config_stack().set('append_revisions_only', enabled)
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def fetch(self, from_branch, stop_revision=None, limit=None, lossy=False):
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"""Copy revisions from from_branch into this branch.
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:param from_branch: Where to copy from.
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:param stop_revision: What revision to stop at (None for at the end
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:param limit: Optional rough limit of revisions to fetch
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with self.lock_write():
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return InterBranch.get(from_branch, self).fetch(
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stop_revision, limit=limit, lossy=lossy)
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def get_bound_location(self):
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"""Return the URL of the branch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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def get_old_bound_location(self):
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"""Return the URL of the branch we used to be bound to
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raise errors.UpgradeRequired(self.user_url)
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def get_commit_builder(self, parents, config_stack=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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revision_id=None, lossy=False):
702
"""Obtain a CommitBuilder for this branch.
704
:param parents: Revision ids of the parents of the new revision.
705
:param config: Optional configuration to use.
706
:param timestamp: Optional timestamp recorded for commit.
707
:param timezone: Optional timezone for timestamp.
708
:param committer: Optional committer to set for commit.
709
:param revprops: Optional dictionary of revision properties.
710
:param revision_id: Optional revision id.
711
:param lossy: Whether to discard data that can not be natively
712
represented, when pushing to a foreign VCS
715
if config_stack is None:
716
config_stack = self.get_config_stack()
718
return self.repository.get_commit_builder(
719
self, parents, config_stack, timestamp, timezone, committer,
720
revprops, revision_id, lossy)
722
def get_master_branch(self, possible_transports=None):
723
"""Return the branch we are bound to.
725
:return: Either a Branch, or None
729
def get_stacked_on_url(self):
730
"""Get the URL this branch is stacked against.
732
:raises NotStacked: If the branch is not stacked.
733
:raises UnstackableBranchFormat: If the branch does not support
736
raise NotImplementedError(self.get_stacked_on_url)
738
def set_last_revision_info(self, revno, revision_id):
739
"""Set the last revision of this branch.
741
The caller is responsible for checking that the revno is correct
742
for this revision id.
744
It may be possible to set the branch last revision to an id not
745
present in the repository. However, branches can also be
746
configured to check constraints on history, in which case this may not
749
raise NotImplementedError(self.set_last_revision_info)
751
def generate_revision_history(self, revision_id, last_rev=None,
753
"""See Branch.generate_revision_history"""
754
with self.lock_write():
755
graph = self.repository.get_graph()
756
(last_revno, last_revid) = self.last_revision_info()
757
known_revision_ids = [
758
(last_revid, last_revno),
759
(_mod_revision.NULL_REVISION, 0),
761
if last_rev is not None:
762
if not graph.is_ancestor(last_rev, revision_id):
763
# our previous tip is not merged into stop_revision
764
raise errors.DivergedBranches(self, other_branch)
765
revno = graph.find_distance_to_null(
766
revision_id, known_revision_ids)
767
self.set_last_revision_info(revno, revision_id)
769
def set_parent(self, url):
770
"""See Branch.set_parent."""
771
# TODO: Maybe delete old location files?
772
# URLs should never be unicode, even on the local fs,
773
# FIXUP this and get_parent in a future branch format bump:
774
# read and rewrite the file. RBC 20060125
776
if isinstance(url, str):
779
except UnicodeEncodeError:
780
raise urlutils.InvalidURL(
781
url, "Urls must be 7-bit ascii, "
782
"use breezy.urlutils.escape")
783
url = urlutils.relative_url(self.base, url)
784
with self.lock_write():
785
self._set_parent_location(url)
787
def set_stacked_on_url(self, url):
788
"""Set the URL this branch is stacked against.
790
:raises UnstackableBranchFormat: If the branch does not support
792
:raises UnstackableRepositoryFormat: If the repository does not support
795
if not self._format.supports_stacking():
796
raise UnstackableBranchFormat(self._format, self.user_url)
797
with self.lock_write():
798
# XXX: Changing from one fallback repository to another does not
799
# check that all the data you need is present in the new fallback.
800
# Possibly it should.
801
self._check_stackable_repo()
804
self.get_stacked_on_url()
805
except (errors.NotStacked, UnstackableBranchFormat,
806
errors.UnstackableRepositoryFormat):
810
self._activate_fallback_location(
811
url, possible_transports=[self.controldir.root_transport])
812
# write this out after the repository is stacked to avoid setting a
813
# stacked config that doesn't work.
814
self._set_config_location('stacked_on_location', url)
817
"""Change a branch to be unstacked, copying data as needed.
819
Don't call this directly, use set_stacked_on_url(None).
821
with ui.ui_factory.nested_progress_bar() as pb:
822
pb.update(gettext("Unstacking"))
823
# The basic approach here is to fetch the tip of the branch,
824
# including all available ghosts, from the existing stacked
825
# repository into a new repository object without the fallbacks.
827
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
828
# correct for CHKMap repostiories
829
old_repository = self.repository
830
if len(old_repository._fallback_repositories) != 1:
831
raise AssertionError(
832
"can't cope with fallback repositories "
833
"of %r (fallbacks: %r)" % (
834
old_repository, old_repository._fallback_repositories))
835
# Open the new repository object.
836
# Repositories don't offer an interface to remove fallback
837
# repositories today; take the conceptually simpler option and just
838
# reopen it. We reopen it starting from the URL so that we
839
# get a separate connection for RemoteRepositories and can
840
# stream from one of them to the other. This does mean doing
841
# separate SSH connection setup, but unstacking is not a
842
# common operation so it's tolerable.
843
new_bzrdir = controldir.ControlDir.open(
844
self.controldir.root_transport.base)
845
new_repository = new_bzrdir.find_repository()
846
if new_repository._fallback_repositories:
847
raise AssertionError(
848
"didn't expect %r to have fallback_repositories"
849
% (self.repository,))
850
# Replace self.repository with the new repository.
851
# Do our best to transfer the lock state (i.e. lock-tokens and
852
# lock count) of self.repository to the new repository.
853
lock_token = old_repository.lock_write().repository_token
854
self.repository = new_repository
855
if isinstance(self, remote.RemoteBranch):
856
# Remote branches can have a second reference to the old
857
# repository that need to be replaced.
858
if self._real_branch is not None:
859
self._real_branch.repository = new_repository
860
self.repository.lock_write(token=lock_token)
861
if lock_token is not None:
862
old_repository.leave_lock_in_place()
863
old_repository.unlock()
864
if lock_token is not None:
865
# XXX: self.repository.leave_lock_in_place() before this
866
# function will not be preserved. Fortunately that doesn't
867
# affect the current default format (2a), and would be a
868
# corner-case anyway.
869
# - Andrew Bennetts, 2010/06/30
870
self.repository.dont_leave_lock_in_place()
874
old_repository.unlock()
875
except errors.LockNotHeld:
878
if old_lock_count == 0:
879
raise AssertionError(
880
'old_repository should have been locked at least once.')
881
for i in range(old_lock_count - 1):
882
self.repository.lock_write()
883
# Fetch from the old repository into the new.
884
with old_repository.lock_read():
885
# XXX: If you unstack a branch while it has a working tree
886
# with a pending merge, the pending-merged revisions will no
887
# longer be present. You can (probably) revert and remerge.
889
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
890
except errors.TagsNotSupported:
891
tags_to_fetch = set()
892
fetch_spec = vf_search.NotInOtherForRevs(
893
self.repository, old_repository,
894
required_ids=[self.last_revision()],
895
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
896
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
898
def _cache_revision_history(self, rev_history):
899
"""Set the cached revision history to rev_history.
901
The revision_history method will use this cache to avoid regenerating
902
the revision history.
904
This API is semi-public; it only for use by subclasses, all other code
905
should consider it to be private.
907
self._revision_history_cache = rev_history
909
def _cache_revision_id_to_revno(self, revision_id_to_revno):
910
"""Set the cached revision_id => revno map to revision_id_to_revno.
912
This API is semi-public; it only for use by subclasses, all other code
913
should consider it to be private.
915
self._revision_id_to_revno_cache = revision_id_to_revno
917
def _clear_cached_state(self):
918
"""Clear any cached data on this branch, e.g. cached revision history.
920
This means the next call to revision_history will need to call
921
_gen_revision_history.
923
This API is semi-public; it is only for use by subclasses, all other
924
code should consider it to be private.
926
self._revision_history_cache = None
927
self._revision_id_to_revno_cache = None
928
self._last_revision_info_cache = None
929
self._master_branch_cache = None
930
self._merge_sorted_revisions_cache = None
931
self._partial_revision_history_cache = []
932
self._partial_revision_id_to_revno_cache = {}
934
def _gen_revision_history(self):
935
"""Return sequence of revision hashes on to this branch.
937
Unlike revision_history, this method always regenerates or rereads the
938
revision history, i.e. it does not cache the result, so repeated calls
941
Concrete subclasses should override this instead of revision_history so
942
that subclasses do not need to deal with caching logic.
944
This API is semi-public; it only for use by subclasses, all other code
945
should consider it to be private.
947
raise NotImplementedError(self._gen_revision_history)
949
def _revision_history(self):
950
if 'evil' in debug.debug_flags:
951
mutter_callsite(3, "revision_history scales with history.")
952
if self._revision_history_cache is not None:
953
history = self._revision_history_cache
955
history = self._gen_revision_history()
956
self._cache_revision_history(history)
960
"""Return current revision number for this branch.
962
That is equivalent to the number of revisions committed to
965
return self.last_revision_info()[0]
968
"""Older format branches cannot bind or unbind."""
969
raise errors.UpgradeRequired(self.user_url)
971
def last_revision(self):
972
"""Return last revision id, or NULL_REVISION."""
973
return self.last_revision_info()[1]
975
def last_revision_info(self):
976
"""Return information about the last revision.
978
:return: A tuple (revno, revision_id).
980
with self.lock_read():
981
if self._last_revision_info_cache is None:
982
self._last_revision_info_cache = (
983
self._read_last_revision_info())
984
return self._last_revision_info_cache
986
def _read_last_revision_info(self):
987
raise NotImplementedError(self._read_last_revision_info)
989
def import_last_revision_info_and_tags(self, source, revno, revid,
991
"""Set the last revision info, importing from another repo if necessary.
993
This is used by the bound branch code to upload a revision to
994
the master branch first before updating the tip of the local branch.
995
Revisions referenced by source's tags are also transferred.
997
:param source: Source branch to optionally fetch from
998
:param revno: Revision number of the new tip
999
:param revid: Revision id of the new tip
1000
:param lossy: Whether to discard metadata that can not be
1001
natively represented
1002
:return: Tuple with the new revision number and revision id
1003
(should only be different from the arguments when lossy=True)
1005
if not self.repository.has_same_location(source.repository):
1006
self.fetch(source, revid)
1007
self.set_last_revision_info(revno, revid)
1008
return (revno, revid)
1010
def revision_id_to_revno(self, revision_id):
1011
"""Given a revision id, return its revno"""
1012
if _mod_revision.is_null(revision_id):
1014
history = self._revision_history()
1016
return history.index(revision_id) + 1
1018
raise errors.NoSuchRevision(self, revision_id)
1020
def get_rev_id(self, revno, history=None):
1021
"""Find the revision id of the specified revno."""
1022
with self.lock_read():
1024
return _mod_revision.NULL_REVISION
1025
last_revno, last_revid = self.last_revision_info()
1026
if revno == last_revno:
1028
if revno <= 0 or revno > last_revno:
1029
raise errors.NoSuchRevision(self, revno)
1030
distance_from_last = last_revno - revno
1031
if len(self._partial_revision_history_cache) <= distance_from_last:
1032
self._extend_partial_history(distance_from_last)
1033
return self._partial_revision_history_cache[distance_from_last]
1035
def pull(self, source, overwrite=False, stop_revision=None,
1036
possible_transports=None, *args, **kwargs):
1037
"""Mirror source into this branch.
1039
This branch is considered to be 'local', having low latency.
1041
:returns: PullResult instance
1043
return InterBranch.get(source, self).pull(
1044
overwrite=overwrite, stop_revision=stop_revision,
1045
possible_transports=possible_transports, *args, **kwargs)
1047
def push(self, target, overwrite=False, stop_revision=None, lossy=False,
1049
"""Mirror this branch into target.
1051
This branch is considered to be 'local', having low latency.
1053
return InterBranch.get(self, target).push(
1054
overwrite, stop_revision, lossy, *args, **kwargs)
1056
def basis_tree(self):
1057
"""Return `Tree` object for last revision."""
1058
return self.repository.revision_tree(self.last_revision())
1060
def get_parent(self):
1061
"""Return the parent location of the branch.
1063
This is the default location for pull/missing. The usual
1064
pattern is that the user can override it by specifying a
1067
parent = self._get_parent_location()
1070
# This is an old-format absolute path to a local branch
1071
# turn it into a url
1072
if parent.startswith('/'):
1073
parent = urlutils.local_path_to_url(parent)
1075
return urlutils.join(self.base[:-1], parent)
1076
except urlutils.InvalidURLJoin:
1077
raise errors.InaccessibleParent(parent, self.user_url)
1079
def _get_parent_location(self):
1080
raise NotImplementedError(self._get_parent_location)
1082
def _set_config_location(self, name, url, config=None,
1083
make_relative=False):
1085
config = self.get_config_stack()
1089
url = urlutils.relative_url(self.base, url)
1090
config.set(name, url)
1092
def _get_config_location(self, name, config=None):
1094
config = self.get_config_stack()
1095
location = config.get(name)
1100
def get_child_submit_format(self):
1101
"""Return the preferred format of submissions to this branch."""
1102
return self.get_config_stack().get('child_submit_format')
1104
def get_submit_branch(self):
1105
"""Return the submit location of the branch.
1107
This is the default location for bundle. The usual
1108
pattern is that the user can override it by specifying a
1111
return self.get_config_stack().get('submit_branch')
1113
def set_submit_branch(self, location):
1114
"""Return the submit location of the branch.
1116
This is the default location for bundle. The usual
1117
pattern is that the user can override it by specifying a
1120
self.get_config_stack().set('submit_branch', location)
1122
def get_public_branch(self):
1123
"""Return the public location of the branch.
1125
This is used by merge directives.
1127
return self._get_config_location('public_branch')
1129
def set_public_branch(self, location):
1130
"""Return the submit location of the branch.
1132
This is the default location for bundle. The usual
1133
pattern is that the user can override it by specifying a
1136
self._set_config_location('public_branch', location)
1138
def get_push_location(self):
1139
"""Return None or the location to push this branch to."""
1140
return self.get_config_stack().get('push_location')
1142
def set_push_location(self, location):
1143
"""Set a new push location for this branch."""
1144
raise NotImplementedError(self.set_push_location)
1146
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1147
"""Run the post_change_branch_tip hooks."""
1148
hooks = Branch.hooks['post_change_branch_tip']
1151
new_revno, new_revid = self.last_revision_info()
1152
params = ChangeBranchTipParams(
1153
self, old_revno, new_revno, old_revid, new_revid)
1157
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1158
"""Run the pre_change_branch_tip hooks."""
1159
hooks = Branch.hooks['pre_change_branch_tip']
1162
old_revno, old_revid = self.last_revision_info()
1163
params = ChangeBranchTipParams(
1164
self, old_revno, new_revno, old_revid, new_revid)
1169
"""Synchronise this branch with the master branch if any.
1171
:return: None or the last_revision pivoted out during the update.
1175
def check_revno(self, revno):
1177
Check whether a revno corresponds to any revision.
1178
Zero (the NULL revision) is considered valid.
1181
self.check_real_revno(revno)
1183
def check_real_revno(self, revno):
1185
Check whether a revno corresponds to a real revision.
1186
Zero (the NULL revision) is considered invalid
1188
if revno < 1 or revno > self.revno():
1189
raise errors.InvalidRevisionNumber(revno)
1191
def clone(self, to_controldir, revision_id=None, name=None,
1192
repository_policy=None, tag_selector=None):
1193
"""Clone this branch into to_controldir preserving all semantic values.
1195
Most API users will want 'create_clone_on_transport', which creates a
1196
new bzrdir and branch on the fly.
1198
revision_id: if not None, the revision history in the new branch will
1199
be truncated to end with revision_id.
1201
result = to_controldir.create_branch(name=name)
1202
with self.lock_read(), result.lock_write():
1203
if repository_policy is not None:
1204
repository_policy.configure_branch(result)
1205
self.copy_content_into(
1206
result, revision_id=revision_id, tag_selector=tag_selector)
1209
def sprout(self, to_controldir, revision_id=None, repository_policy=None,
1210
repository=None, lossy=False, tag_selector=None):
1211
"""Create a new line of development from the branch, into to_controldir.
1213
to_controldir controls the branch format.
1215
revision_id: if not None, the revision history in the new branch will
1216
be truncated to end with revision_id.
1218
if (repository_policy is not None
1219
and repository_policy.requires_stacking()):
1220
to_controldir._format.require_stacking(_skip_repo=True)
1221
result = to_controldir.create_branch(repository=repository)
1223
raise errors.LossyPushToSameVCS(self, result)
1224
with self.lock_read(), result.lock_write():
1225
if repository_policy is not None:
1226
repository_policy.configure_branch(result)
1227
self.copy_content_into(
1228
result, revision_id=revision_id, tag_selector=tag_selector)
1229
master_url = self.get_bound_location()
1230
if master_url is None:
1231
result.set_parent(self.user_url)
1233
result.set_parent(master_url)
1236
def _synchronize_history(self, destination, revision_id):
1237
"""Synchronize last revision and revision history between branches.
1239
This version is most efficient when the destination is also a
1240
BzrBranch6, but works for BzrBranch5, as long as the destination's
1241
repository contains all the lefthand ancestors of the intended
1242
last_revision. If not, set_last_revision_info will fail.
1244
:param destination: The branch to copy the history into
1245
:param revision_id: The revision-id to truncate history at. May
1246
be None to copy complete history.
1248
source_revno, source_revision_id = self.last_revision_info()
1249
if revision_id is None:
1250
revno, revision_id = source_revno, source_revision_id
1252
graph = self.repository.get_graph()
1254
revno = graph.find_distance_to_null(
1255
revision_id, [(source_revision_id, source_revno)])
1256
except errors.GhostRevisionsHaveNoRevno:
1257
# Default to 1, if we can't find anything else
1259
destination.set_last_revision_info(revno, revision_id)
1261
def copy_content_into(self, destination, revision_id=None, tag_selector=None):
1262
"""Copy the content of self into destination.
1264
revision_id: if not None, the revision history in the new branch will
1265
be truncated to end with revision_id.
1266
tag_selector: Optional callback that receives a tag name
1267
and should return a boolean to indicate whether a tag should be copied
1269
return InterBranch.get(self, destination).copy_content_into(
1270
revision_id=revision_id, tag_selector=tag_selector)
1272
def update_references(self, target):
1273
if not self._format.supports_reference_locations:
1275
return InterBranch.get(self, target).update_references()
1277
def check(self, refs):
1278
"""Check consistency of the branch.
1280
In particular this checks that revisions given in the revision-history
1281
do actually match up in the revision graph, and that they're all
1282
present in the repository.
1284
Callers will typically also want to check the repository.
1286
:param refs: Calculated refs for this branch as specified by
1287
branch._get_check_refs()
1288
:return: A BranchCheckResult.
1290
with self.lock_read():
1291
result = BranchCheckResult(self)
1292
last_revno, last_revision_id = self.last_revision_info()
1293
actual_revno = refs[('lefthand-distance', last_revision_id)]
1294
if actual_revno != last_revno:
1295
result.errors.append(errors.BzrCheckError(
1296
'revno does not match len(mainline) %s != %s' % (
1297
last_revno, actual_revno)))
1298
# TODO: We should probably also check that self.revision_history
1299
# matches the repository for older branch formats.
1300
# If looking for the code that cross-checks repository parents
1301
# against the Graph.iter_lefthand_ancestry output, that is now a
1302
# repository specific check.
1305
def _get_checkout_format(self, lightweight=False):
1306
"""Return the most suitable metadir for a checkout of this branch.
1307
Weaves are used if this branch's repository uses weaves.
1309
format = self.repository.controldir.checkout_metadir()
1310
format.set_branch_format(self._format)
1313
def create_clone_on_transport(self, to_transport, revision_id=None,
1314
stacked_on=None, create_prefix=False,
1315
use_existing_dir=False, no_tree=None,
1317
"""Create a clone of this branch and its bzrdir.
1319
:param to_transport: The transport to clone onto.
1320
:param revision_id: The revision id to use as tip in the new branch.
1321
If None the tip is obtained from this branch.
1322
:param stacked_on: An optional URL to stack the clone on.
1323
:param create_prefix: Create any missing directories leading up to
1325
:param use_existing_dir: Use an existing directory if one exists.
1327
# XXX: Fix the bzrdir API to allow getting the branch back from the
1328
# clone call. Or something. 20090224 RBC/spiv.
1329
# XXX: Should this perhaps clone colocated branches as well,
1330
# rather than just the default branch? 20100319 JRV
1331
if revision_id is None:
1332
revision_id = self.last_revision()
1333
dir_to = self.controldir.clone_on_transport(
1334
to_transport, revision_id=revision_id, stacked_on=stacked_on,
1335
create_prefix=create_prefix, use_existing_dir=use_existing_dir,
1336
no_tree=no_tree, tag_selector=tag_selector)
1337
return dir_to.open_branch()
1339
def create_checkout(self, to_location, revision_id=None,
1340
lightweight=False, accelerator_tree=None,
1341
hardlink=False, recurse_nested=True):
1342
"""Create a checkout of a branch.
1344
:param to_location: The url to produce the checkout at
1345
:param revision_id: The revision to check out
1346
:param lightweight: If True, produce a lightweight checkout, otherwise,
1347
produce a bound branch (heavyweight checkout)
1348
:param accelerator_tree: A tree which can be used for retrieving file
1349
contents more quickly than the revision tree, i.e. a workingtree.
1350
The revision tree will be used for cases where accelerator_tree's
1351
content is different.
1352
:param hardlink: If true, hard-link files from accelerator_tree,
1354
:param recurse_nested: Whether to recurse into nested trees
1355
:return: The tree of the created checkout
1357
t = transport.get_transport(to_location)
1359
format = self._get_checkout_format(lightweight=lightweight)
1361
checkout = format.initialize_on_transport(t)
1362
except errors.AlreadyControlDirError:
1363
# It's fine if the control directory already exists,
1364
# as long as there is no existing branch and working tree.
1365
checkout = controldir.ControlDir.open_from_transport(t)
1367
checkout.open_branch()
1368
except errors.NotBranchError:
1371
raise errors.AlreadyControlDirError(t.base)
1372
if (checkout.control_transport.base
1373
== self.controldir.control_transport.base):
1374
# When checking out to the same control directory,
1375
# always create a lightweight checkout
1379
from_branch = checkout.set_branch_reference(target_branch=self)
1381
policy = checkout.determine_repository_policy()
1382
policy.acquire_repository()
1383
checkout_branch = checkout.create_branch()
1384
checkout_branch.bind(self)
1385
# pull up to the specified revision_id to set the initial
1386
# branch tip correctly, and seed it with history.
1387
checkout_branch.pull(self, stop_revision=revision_id)
1389
tree = checkout.create_workingtree(revision_id,
1390
from_branch=from_branch,
1391
accelerator_tree=accelerator_tree,
1393
basis_tree = tree.basis_tree()
1394
with basis_tree.lock_read():
1395
for path in basis_tree.iter_references():
1396
reference_parent = tree.reference_parent(path)
1397
if reference_parent is None:
1398
warning('Branch location for %s unknown.', path)
1400
reference_parent.create_checkout(
1402
basis_tree.get_reference_revision(path), lightweight)
1405
def reconcile(self, thorough=True):
1406
"""Make sure the data stored in this branch is consistent.
1408
:return: A `ReconcileResult` object.
1410
raise NotImplementedError(self.reconcile)
1412
def supports_tags(self):
1413
return self._format.supports_tags()
1415
def automatic_tag_name(self, revision_id):
1416
"""Try to automatically find the tag name for a revision.
1418
:param revision_id: Revision id of the revision.
1419
:return: A tag name or None if no tag name could be determined.
1421
for hook in Branch.hooks['automatic_tag_name']:
1422
ret = hook(self, revision_id)
1427
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1429
"""Ensure that revision_b is a descendant of revision_a.
1431
This is a helper function for update_revisions.
1433
:raises: DivergedBranches if revision_b has diverged from revision_a.
1434
:returns: True if revision_b is a descendant of revision_a.
1436
relation = self._revision_relations(revision_a, revision_b, graph)
1437
if relation == 'b_descends_from_a':
1439
elif relation == 'diverged':
1440
raise errors.DivergedBranches(self, other_branch)
1441
elif relation == 'a_descends_from_b':
1444
raise AssertionError("invalid relation: %r" % (relation,))
1446
def _revision_relations(self, revision_a, revision_b, graph):
1447
"""Determine the relationship between two revisions.
1449
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1451
heads = graph.heads([revision_a, revision_b])
1452
if heads == {revision_b}:
1453
return 'b_descends_from_a'
1454
elif heads == {revision_a, revision_b}:
1455
# These branches have diverged
1457
elif heads == {revision_a}:
1458
return 'a_descends_from_b'
1460
raise AssertionError("invalid heads: %r" % (heads,))
1462
def heads_to_fetch(self):
1463
"""Return the heads that must and that should be fetched to copy this
1464
branch into another repo.
1466
:returns: a 2-tuple of (must_fetch, if_present_fetch). must_fetch is a
1467
set of heads that must be fetched. if_present_fetch is a set of
1468
heads that must be fetched if present, but no error is necessary if
1469
they are not present.
1471
# For bzr native formats must_fetch is just the tip, and
1472
# if_present_fetch are the tags.
1473
must_fetch = {self.last_revision()}
1474
if_present_fetch = set()
1475
if self.get_config_stack().get('branch.fetch_tags'):
1477
if_present_fetch = set(self.tags.get_reverse_tag_dict())
1478
except errors.TagsNotSupported:
1480
must_fetch.discard(_mod_revision.NULL_REVISION)
1481
if_present_fetch.discard(_mod_revision.NULL_REVISION)
1482
return must_fetch, if_present_fetch
1484
def create_memorytree(self):
1485
"""Create a memory tree for this branch.
1487
:return: An in-memory MutableTree instance
1489
return memorytree.MemoryTree.create_on_branch(self)
1492
class BranchFormat(controldir.ControlComponentFormat):
1493
"""An encapsulation of the initialization and open routines for a format.
1495
Formats provide three things:
1496
* An initialization routine,
1497
* a format description
1500
Formats are placed in an dict by their format string for reference
1501
during branch opening. It's not required that these be instances, they
1502
can be classes themselves with class methods - it simply depends on
1503
whether state is needed for a given format or not.
1505
Once a format is deprecated, just deprecate the initialize and open
1506
methods on the format class. Do not deprecate the object, as the
1507
object will be created every time regardless.
1510
def __eq__(self, other):
1511
return self.__class__ is other.__class__
1513
def __ne__(self, other):
1514
return not (self == other)
1516
def get_reference(self, controldir, name=None):
1517
"""Get the target reference of the branch in controldir.
1519
format probing must have been completed before calling
1520
this method - it is assumed that the format of the branch
1521
in controldir is correct.
1523
:param controldir: The controldir to get the branch data from.
1524
:param name: Name of the colocated branch to fetch
1525
:return: None if the branch is not a reference branch.
1530
def set_reference(self, controldir, name, to_branch):
1531
"""Set the target reference of the branch in controldir.
1533
format probing must have been completed before calling
1534
this method - it is assumed that the format of the branch
1535
in controldir is correct.
1537
:param controldir: The controldir to set the branch reference for.
1538
:param name: Name of colocated branch to set, None for default
1539
:param to_branch: branch that the checkout is to reference
1541
raise NotImplementedError(self.set_reference)
1543
def get_format_description(self):
1544
"""Return the short format description for this format."""
1545
raise NotImplementedError(self.get_format_description)
1547
def _run_post_branch_init_hooks(self, controldir, name, branch):
1548
hooks = Branch.hooks['post_branch_init']
1551
params = BranchInitHookParams(self, controldir, name, branch)
1555
def initialize(self, controldir, name=None, repository=None,
1556
append_revisions_only=None):
1557
"""Create a branch of this format in controldir.
1559
:param name: Name of the colocated branch to create.
1561
raise NotImplementedError(self.initialize)
1563
def is_supported(self):
1564
"""Is this format supported?
1566
Supported formats can be initialized and opened.
1567
Unsupported formats may not support initialization or committing or
1568
some other features depending on the reason for not being supported.
1572
def make_tags(self, branch):
1573
"""Create a tags object for branch.
1575
This method is on BranchFormat, because BranchFormats are reflected
1576
over the wire via network_name(), whereas full Branch instances require
1577
multiple VFS method calls to operate at all.
1579
The default implementation returns a disabled-tags instance.
1581
Note that it is normal for branch to be a RemoteBranch when using tags
1584
return _mod_tag.DisabledTags(branch)
1586
def network_name(self):
1587
"""A simple byte string uniquely identifying this format for RPC calls.
1589
MetaDir branch formats use their disk format string to identify the
1590
repository over the wire. All in one formats such as bzr < 0.8, and
1591
foreign formats like svn/git and hg should use some marker which is
1592
unique and immutable.
1594
raise NotImplementedError(self.network_name)
1596
def open(self, controldir, name=None, _found=False, ignore_fallbacks=False,
1597
found_repository=None, possible_transports=None):
1598
"""Return the branch object for controldir.
1600
:param controldir: A ControlDir that contains a branch.
1601
:param name: Name of colocated branch to open
1602
:param _found: a private parameter, do not use it. It is used to
1603
indicate if format probing has already be done.
1604
:param ignore_fallbacks: when set, no fallback branches will be opened
1605
(if there are any). Default is to open fallbacks.
1607
raise NotImplementedError(self.open)
1609
def supports_set_append_revisions_only(self):
1610
"""True if this format supports set_append_revisions_only."""
1613
def supports_stacking(self):
1614
"""True if this format records a stacked-on branch."""
1617
def supports_leaving_lock(self):
1618
"""True if this format supports leaving locks in place."""
1619
return False # by default
1622
return self.get_format_description().rstrip()
1624
def supports_tags(self):
1625
"""True if this format supports tags stored in the branch"""
1626
return False # by default
1628
def tags_are_versioned(self):
1629
"""Whether the tag container for this branch versions tags."""
1632
def supports_tags_referencing_ghosts(self):
1633
"""True if tags can reference ghost revisions."""
1636
def supports_store_uncommitted(self):
1637
"""True if uncommitted changes can be stored in this branch."""
1640
def stores_revno(self):
1641
"""True if this branch format store revision numbers."""
1645
class BranchHooks(Hooks):
1646
"""A dictionary mapping hook name to a list of callables for branch hooks.
1648
e.g. ['post_push'] Is the list of items to be called when the
1649
push function is invoked.
1653
"""Create the default hooks.
1655
These are all empty initially, because by default nothing should get
1658
Hooks.__init__(self, "breezy.branch", "Branch.hooks")
1661
"Called with the Branch object that has been opened after a "
1662
"branch is opened.", (1, 8))
1665
"Called after a push operation completes. post_push is called "
1666
"with a breezy.branch.BranchPushResult object and only runs in "
1667
"the bzr client.", (0, 15))
1670
"Called after a pull operation completes. post_pull is called "
1671
"with a breezy.branch.PullResult object and only runs in the "
1672
"bzr client.", (0, 15))
1675
"Called after a commit is calculated but before it is "
1676
"completed. pre_commit is called with (local, master, old_revno, "
1677
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1678
"). old_revid is NULL_REVISION for the first commit to a branch, "
1679
"tree_delta is a TreeDelta object describing changes from the "
1680
"basis revision. hooks MUST NOT modify this delta. "
1681
" future_tree is an in-memory tree obtained from "
1682
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1686
"Called in the bzr client after a commit has completed. "
1687
"post_commit is called with (local, master, old_revno, old_revid, "
1688
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1689
"commit to a branch.", (0, 15))
1692
"Called in the bzr client after an uncommit completes. "
1693
"post_uncommit is called with (local, master, old_revno, "
1694
"old_revid, new_revno, new_revid) where local is the local branch "
1695
"or None, master is the target branch, and an empty branch "
1696
"receives new_revno of 0, new_revid of None.", (0, 15))
1698
'pre_change_branch_tip',
1699
"Called in bzr client and server before a change to the tip of a "
1700
"branch is made. pre_change_branch_tip is called with a "
1701
"breezy.branch.ChangeBranchTipParams. Note that push, pull, "
1702
"commit, uncommit will all trigger this hook.", (1, 6))
1704
'post_change_branch_tip',
1705
"Called in bzr client and server after a change to the tip of a "
1706
"branch is made. post_change_branch_tip is called with a "
1707
"breezy.branch.ChangeBranchTipParams. Note that push, pull, "
1708
"commit, uncommit will all trigger this hook.", (1, 4))
1710
'transform_fallback_location',
1711
"Called when a stacked branch is activating its fallback "
1712
"locations. transform_fallback_location is called with (branch, "
1713
"url), and should return a new url. Returning the same url "
1714
"allows it to be used as-is, returning a different one can be "
1715
"used to cause the branch to stack on a closer copy of that "
1716
"fallback_location. Note that the branch cannot have history "
1717
"accessing methods called on it during this hook because the "
1718
"fallback locations have not been activated. When there are "
1719
"multiple hooks installed for transform_fallback_location, "
1720
"all are called with the url returned from the previous hook."
1721
"The order is however undefined.", (1, 9))
1723
'automatic_tag_name',
1724
"Called to determine an automatic tag name for a revision. "
1725
"automatic_tag_name is called with (branch, revision_id) and "
1726
"should return a tag name or None if no tag name could be "
1727
"determined. The first non-None tag name returned will be used.",
1731
"Called after new branch initialization completes. "
1732
"post_branch_init is called with a "
1733
"breezy.branch.BranchInitHookParams. "
1734
"Note that init, branch and checkout (both heavyweight and "
1735
"lightweight) will all trigger this hook.", (2, 2))
1738
"Called after a checkout switches branch. "
1739
"post_switch is called with a "
1740
"breezy.branch.SwitchHookParams.", (2, 2))
1743
# install the default hooks into the Branch class.
1744
Branch.hooks = BranchHooks()
1747
class ChangeBranchTipParams(object):
1748
"""Object holding parameters passed to `*_change_branch_tip` hooks.
1750
There are 5 fields that hooks may wish to access:
1752
:ivar branch: the branch being changed
1753
:ivar old_revno: revision number before the change
1754
:ivar new_revno: revision number after the change
1755
:ivar old_revid: revision id before the change
1756
:ivar new_revid: revision id after the change
1758
The revid fields are strings. The revno fields are integers.
1761
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1762
"""Create a group of ChangeBranchTip parameters.
1764
:param branch: The branch being changed.
1765
:param old_revno: Revision number before the change.
1766
:param new_revno: Revision number after the change.
1767
:param old_revid: Tip revision id before the change.
1768
:param new_revid: Tip revision id after the change.
1770
self.branch = branch
1771
self.old_revno = old_revno
1772
self.new_revno = new_revno
1773
self.old_revid = old_revid
1774
self.new_revid = new_revid
1776
def __eq__(self, other):
1777
return self.__dict__ == other.__dict__
1780
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1781
self.__class__.__name__, self.branch,
1782
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1785
class BranchInitHookParams(object):
1786
"""Object holding parameters passed to `*_branch_init` hooks.
1788
There are 4 fields that hooks may wish to access:
1790
:ivar format: the branch format
1791
:ivar bzrdir: the ControlDir where the branch will be/has been initialized
1792
:ivar name: name of colocated branch, if any (or None)
1793
:ivar branch: the branch created
1795
Note that for lightweight checkouts, the bzrdir and format fields refer to
1796
the checkout, hence they are different from the corresponding fields in
1797
branch, which refer to the original branch.
1800
def __init__(self, format, controldir, name, branch):
1801
"""Create a group of BranchInitHook parameters.
1803
:param format: the branch format
1804
:param controldir: the ControlDir where the branch will be/has been
1806
:param name: name of colocated branch, if any (or None)
1807
:param branch: the branch created
1809
Note that for lightweight checkouts, the bzrdir and format fields refer
1810
to the checkout, hence they are different from the corresponding fields
1811
in branch, which refer to the original branch.
1813
self.format = format
1814
self.controldir = controldir
1816
self.branch = branch
1818
def __eq__(self, other):
1819
return self.__dict__ == other.__dict__
1822
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1825
class SwitchHookParams(object):
1826
"""Object holding parameters passed to `*_switch` hooks.
1828
There are 4 fields that hooks may wish to access:
1830
:ivar control_dir: ControlDir of the checkout to change
1831
:ivar to_branch: branch that the checkout is to reference
1832
:ivar force: skip the check for local commits in a heavy checkout
1833
:ivar revision_id: revision ID to switch to (or None)
1836
def __init__(self, control_dir, to_branch, force, revision_id):
1837
"""Create a group of SwitchHook parameters.
1839
:param control_dir: ControlDir of the checkout to change
1840
:param to_branch: branch that the checkout is to reference
1841
:param force: skip the check for local commits in a heavy checkout
1842
:param revision_id: revision ID to switch to (or None)
1844
self.control_dir = control_dir
1845
self.to_branch = to_branch
1847
self.revision_id = revision_id
1849
def __eq__(self, other):
1850
return self.__dict__ == other.__dict__
1853
return "<%s for %s to (%s, %s)>" % (
1854
self.__class__.__name__, self.control_dir, self.to_branch,
1858
class BranchFormatRegistry(controldir.ControlComponentFormatRegistry):
1859
"""Branch format registry."""
1861
def __init__(self, other_registry=None):
1862
super(BranchFormatRegistry, self).__init__(other_registry)
1863
self._default_format = None
1864
self._default_format_key = None
1866
def get_default(self):
1867
"""Return the current default format."""
1868
if (self._default_format_key is not None
1869
and self._default_format is None):
1870
self._default_format = self.get(self._default_format_key)
1871
return self._default_format
1873
def set_default(self, format):
1874
"""Set the default format."""
1875
self._default_format = format
1876
self._default_format_key = None
1878
def set_default_key(self, format_string):
1879
"""Set the default format by its format string."""
1880
self._default_format_key = format_string
1881
self._default_format = None
1884
network_format_registry = registry.FormatRegistry()
1885
"""Registry of formats indexed by their network name.
1887
The network name for a branch format is an identifier that can be used when
1888
referring to formats with smart server operations. See
1889
BranchFormat.network_name() for more detail.
1892
format_registry = BranchFormatRegistry(network_format_registry)
1895
# formats which have no format string are not discoverable
1896
# and not independently creatable, so are not registered.
1897
format_registry.register_lazy(
1898
b"Bazaar-NG branch format 5\n", "breezy.bzr.fullhistory",
1900
format_registry.register_lazy(
1901
b"Bazaar Branch Format 6 (bzr 0.15)\n",
1902
"breezy.bzr.branch", "BzrBranchFormat6")
1903
format_registry.register_lazy(
1904
b"Bazaar Branch Format 7 (needs bzr 1.6)\n",
1905
"breezy.bzr.branch", "BzrBranchFormat7")
1906
format_registry.register_lazy(
1907
b"Bazaar Branch Format 8 (needs bzr 1.15)\n",
1908
"breezy.bzr.branch", "BzrBranchFormat8")
1909
format_registry.register_lazy(
1910
b"Bazaar-NG Branch Reference Format 1\n",
1911
"breezy.bzr.branch", "BranchReferenceFormat")
1913
format_registry.set_default_key(b"Bazaar Branch Format 7 (needs bzr 1.6)\n")
1916
class BranchWriteLockResult(LogicalLockResult):
1917
"""The result of write locking a branch.
1919
:ivar token: The token obtained from the underlying branch lock, or
1921
:ivar unlock: A callable which will unlock the lock.
1925
return "BranchWriteLockResult(%r, %r)" % (self.unlock, self.token)
1928
######################################################################
1929
# results of operations
1932
class _Result(object):
1934
def _show_tag_conficts(self, to_file):
1935
if not getattr(self, 'tag_conflicts', None):
1937
to_file.write('Conflicting tags:\n')
1938
for name, value1, value2 in self.tag_conflicts:
1939
to_file.write(' %s\n' % (name, ))
1942
class PullResult(_Result):
1943
"""Result of a Branch.pull operation.
1945
:ivar old_revno: Revision number before pull.
1946
:ivar new_revno: Revision number after pull.
1947
:ivar old_revid: Tip revision id before pull.
1948
:ivar new_revid: Tip revision id after pull.
1949
:ivar source_branch: Source (local) branch object. (read locked)
1950
:ivar master_branch: Master branch of the target, or the target if no
1952
:ivar local_branch: target branch if there is a Master, else None
1953
:ivar target_branch: Target/destination branch object. (write locked)
1954
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
1955
:ivar tag_updates: A dict with new tags, see BasicTags.merge_to
1958
def report(self, to_file):
1959
tag_conflicts = getattr(self, "tag_conflicts", None)
1960
tag_updates = getattr(self, "tag_updates", None)
1962
if self.old_revid != self.new_revid:
1963
to_file.write('Now on revision %d.\n' % self.new_revno)
1965
to_file.write('%d tag(s) updated.\n' % len(tag_updates))
1966
if self.old_revid == self.new_revid and not tag_updates:
1967
if not tag_conflicts:
1968
to_file.write('No revisions or tags to pull.\n')
1970
to_file.write('No revisions to pull.\n')
1971
self._show_tag_conficts(to_file)
1974
class BranchPushResult(_Result):
1975
"""Result of a Branch.push operation.
1977
:ivar old_revno: Revision number (eg 10) of the target before push.
1978
:ivar new_revno: Revision number (eg 12) of the target after push.
1979
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
1981
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
1983
:ivar source_branch: Source branch object that the push was from. This is
1984
read locked, and generally is a local (and thus low latency) branch.
1985
:ivar master_branch: If target is a bound branch, the master branch of
1986
target, or target itself. Always write locked.
1987
:ivar target_branch: The direct Branch where data is being sent (write
1989
:ivar local_branch: If the target is a bound branch this will be the
1990
target, otherwise it will be None.
1993
def report(self, to_file):
1994
# TODO: This function gets passed a to_file, but then
1995
# ignores it and calls note() instead. This is also
1996
# inconsistent with PullResult(), which writes to stdout.
1997
# -- JRV20110901, bug #838853
1998
tag_conflicts = getattr(self, "tag_conflicts", None)
1999
tag_updates = getattr(self, "tag_updates", None)
2001
if self.old_revid != self.new_revid:
2002
if self.new_revno is not None:
2003
note(gettext('Pushed up to revision %d.'),
2006
note(gettext('Pushed up to revision id %s.'),
2007
self.new_revid.decode('utf-8'))
2009
note(ngettext('%d tag updated.', '%d tags updated.',
2010
len(tag_updates)) % len(tag_updates))
2011
if self.old_revid == self.new_revid and not tag_updates:
2012
if not tag_conflicts:
2013
note(gettext('No new revisions or tags to push.'))
2015
note(gettext('No new revisions to push.'))
2016
self._show_tag_conficts(to_file)
2019
class BranchCheckResult(object):
2020
"""Results of checking branch consistency.
2025
def __init__(self, branch):
2026
self.branch = branch
2029
def report_results(self, verbose):
2030
"""Report the check results via trace.note.
2032
:param verbose: Requests more detailed display of what was checked,
2035
note(gettext('checked branch {0} format {1}').format(
2036
self.branch.user_url, self.branch._format))
2037
for error in self.errors:
2038
note(gettext('found error:%s'), error)
2041
class InterBranch(InterObject):
2042
"""This class represents operations taking place between two branches.
2044
Its instances have methods like pull() and push() and contain
2045
references to the source and target repositories these operations
2046
can be carried out on.
2050
"""The available optimised InterBranch types."""
2053
def _get_branch_formats_to_test(klass):
2054
"""Return an iterable of format tuples for testing.
2056
:return: An iterable of (from_format, to_format) to use when testing
2057
this InterBranch class. Each InterBranch class should define this
2060
raise NotImplementedError(klass._get_branch_formats_to_test)
2062
def pull(self, overwrite=False, stop_revision=None,
2063
possible_transports=None, local=False, tag_selector=None):
2064
"""Mirror source into target branch.
2066
The target branch is considered to be 'local', having low latency.
2068
:returns: PullResult instance
2070
raise NotImplementedError(self.pull)
2072
def push(self, overwrite=False, stop_revision=None, lossy=False,
2073
_override_hook_source_branch=None, tag_selector=None):
2074
"""Mirror the source branch into the target branch.
2076
The source branch is considered to be 'local', having low latency.
2078
raise NotImplementedError(self.push)
2080
def copy_content_into(self, revision_id=None, tag_selector=None):
2081
"""Copy the content of source into target
2084
if not None, the revision history in the new branch will
2085
be truncated to end with revision_id.
2086
:param tag_selector: Optional callback that can decide
2087
to copy or not copy tags.
2089
raise NotImplementedError(self.copy_content_into)
2091
def fetch(self, stop_revision=None, limit=None, lossy=False):
2094
:param stop_revision: Last revision to fetch
2095
:param limit: Optional rough limit of revisions to fetch
2096
:return: FetchResult object
2098
raise NotImplementedError(self.fetch)
2100
def update_references(self):
2101
"""Import reference information from source to target.
2103
raise NotImplementedError(self.update_references)
2106
def _fix_overwrite_type(overwrite):
2107
if isinstance(overwrite, bool):
2109
return ["history", "tags"]
2115
class GenericInterBranch(InterBranch):
2116
"""InterBranch implementation that uses public Branch functions."""
2119
def is_compatible(klass, source, target):
2120
# GenericBranch uses the public API, so always compatible
2124
def _get_branch_formats_to_test(klass):
2125
return [(format_registry.get_default(), format_registry.get_default())]
2128
def unwrap_format(klass, format):
2129
if isinstance(format, remote.RemoteBranchFormat):
2130
format._ensure_real()
2131
return format._custom_format
2134
def copy_content_into(self, revision_id=None, tag_selector=None):
2135
"""Copy the content of source into target
2137
revision_id: if not None, the revision history in the new branch will
2138
be truncated to end with revision_id.
2140
with self.source.lock_read(), self.target.lock_write():
2141
self.source._synchronize_history(self.target, revision_id)
2142
self.update_references()
2144
parent = self.source.get_parent()
2145
except errors.InaccessibleParent as e:
2146
mutter('parent was not accessible to copy: %s', str(e))
2149
self.target.set_parent(parent)
2150
if self.source._push_should_merge_tags():
2151
self.source.tags.merge_to(self.target.tags, selector=tag_selector)
2153
def fetch(self, stop_revision=None, limit=None, lossy=False):
2154
if self.target.base == self.source.base:
2156
with self.source.lock_read(), self.target.lock_write():
2157
fetch_spec_factory = fetch.FetchSpecFactory()
2158
fetch_spec_factory.source_branch = self.source
2159
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
2160
fetch_spec_factory.source_repo = self.source.repository
2161
fetch_spec_factory.target_repo = self.target.repository
2162
fetch_spec_factory.target_repo_kind = (
2163
fetch.TargetRepoKinds.PREEXISTING)
2164
fetch_spec_factory.limit = limit
2165
fetch_spec = fetch_spec_factory.make_fetch_spec()
2166
return self.target.repository.fetch(
2167
self.source.repository,
2169
fetch_spec=fetch_spec)
2171
def _update_revisions(self, stop_revision=None, overwrite=False,
2173
with self.source.lock_read(), self.target.lock_write():
2174
other_revno, other_last_revision = self.source.last_revision_info()
2175
stop_revno = None # unknown
2176
if stop_revision is None:
2177
stop_revision = other_last_revision
2178
if _mod_revision.is_null(stop_revision):
2179
# if there are no commits, we're done.
2181
stop_revno = other_revno
2183
# what's the current last revision, before we fetch [and change it
2185
last_rev = _mod_revision.ensure_null(self.target.last_revision())
2186
# we fetch here so that we don't process data twice in the common
2187
# case of having something to pull, and so that the check for
2188
# already merged can operate on the just fetched graph, which will
2189
# be cached in memory.
2190
self.fetch(stop_revision=stop_revision)
2191
# Check to see if one is an ancestor of the other
2194
graph = self.target.repository.get_graph()
2195
if self.target._check_if_descendant_or_diverged(
2196
stop_revision, last_rev, graph, self.source):
2197
# stop_revision is a descendant of last_rev, but we aren't
2198
# overwriting, so we're done.
2200
if stop_revno is None:
2202
graph = self.target.repository.get_graph()
2203
this_revno, this_last_revision = \
2204
self.target.last_revision_info()
2205
stop_revno = graph.find_distance_to_null(
2206
stop_revision, [(other_last_revision, other_revno),
2207
(this_last_revision, this_revno)])
2208
self.target.set_last_revision_info(stop_revno, stop_revision)
2210
def pull(self, overwrite=False, stop_revision=None,
2211
possible_transports=None, run_hooks=True,
2212
_override_hook_target=None, local=False,
2214
"""Pull from source into self, updating my master if any.
2216
:param run_hooks: Private parameter - if false, this branch
2217
is being called because it's the master of the primary branch,
2218
so it should not run its hooks.
2220
with contextlib.ExitStack() as exit_stack:
2221
exit_stack.enter_context(self.target.lock_write())
2222
bound_location = self.target.get_bound_location()
2223
if local and not bound_location:
2224
raise errors.LocalRequiresBoundBranch()
2225
master_branch = None
2226
source_is_master = False
2228
# bound_location comes from a config file, some care has to be
2229
# taken to relate it to source.user_url
2230
normalized = urlutils.normalize_url(bound_location)
2232
relpath = self.source.user_transport.relpath(normalized)
2233
source_is_master = (relpath == '')
2234
except (errors.PathNotChild, urlutils.InvalidURL):
2235
source_is_master = False
2236
if not local and bound_location and not source_is_master:
2237
# not pulling from master, so we need to update master.
2238
master_branch = self.target.get_master_branch(
2239
possible_transports)
2240
exit_stack.enter_context(master_branch.lock_write())
2242
# pull from source into master.
2244
self.source, overwrite, stop_revision, run_hooks=False,
2245
tag_selector=tag_selector)
2247
overwrite, stop_revision, _hook_master=master_branch,
2248
run_hooks=run_hooks,
2249
_override_hook_target=_override_hook_target,
2250
merge_tags_to_master=not source_is_master,
2251
tag_selector=tag_selector)
2253
def push(self, overwrite=False, stop_revision=None, lossy=False,
2254
_override_hook_source_branch=None, tag_selector=None):
2255
"""See InterBranch.push.
2257
This is the basic concrete implementation of push()
2259
:param _override_hook_source_branch: If specified, run the hooks
2260
passing this Branch as the source, rather than self. This is for
2261
use of RemoteBranch, where push is delegated to the underlying
2265
raise errors.LossyPushToSameVCS(self.source, self.target)
2266
# TODO: Public option to disable running hooks - should be trivial but
2270
if _override_hook_source_branch:
2271
result.source_branch = _override_hook_source_branch
2272
for hook in Branch.hooks['post_push']:
2275
with self.source.lock_read(), self.target.lock_write():
2276
bound_location = self.target.get_bound_location()
2277
if bound_location and self.target.base != bound_location:
2278
# there is a master branch.
2280
# XXX: Why the second check? Is it even supported for a branch
2281
# to be bound to itself? -- mbp 20070507
2282
master_branch = self.target.get_master_branch()
2283
with master_branch.lock_write():
2284
# push into the master from the source branch.
2285
master_inter = InterBranch.get(self.source, master_branch)
2286
master_inter._basic_push(
2287
overwrite, stop_revision, tag_selector=tag_selector)
2288
# and push into the target branch from the source. Note
2289
# that we push from the source branch again, because it's
2290
# considered the highest bandwidth repository.
2291
result = self._basic_push(
2292
overwrite, stop_revision, tag_selector=tag_selector)
2293
result.master_branch = master_branch
2294
result.local_branch = self.target
2297
master_branch = None
2299
result = self._basic_push(
2300
overwrite, stop_revision, tag_selector=tag_selector)
2301
# TODO: Why set master_branch and local_branch if there's no
2302
# binding? Maybe cleaner to just leave them unset? -- mbp
2304
result.master_branch = self.target
2305
result.local_branch = None
2309
def _basic_push(self, overwrite, stop_revision, tag_selector=None):
2310
"""Basic implementation of push without bound branches or hooks.
2312
Must be called with source read locked and target write locked.
2314
result = BranchPushResult()
2315
result.source_branch = self.source
2316
result.target_branch = self.target
2317
result.old_revno, result.old_revid = self.target.last_revision_info()
2318
overwrite = _fix_overwrite_type(overwrite)
2319
if result.old_revid != stop_revision:
2320
# We assume that during 'push' this repository is closer than
2322
graph = self.source.repository.get_graph(self.target.repository)
2323
self._update_revisions(
2324
stop_revision, overwrite=("history" in overwrite), graph=graph)
2325
if self.source._push_should_merge_tags():
2326
result.tag_updates, result.tag_conflicts = (
2327
self.source.tags.merge_to(
2328
self.target.tags, "tags" in overwrite, selector=tag_selector))
2329
self.update_references()
2330
result.new_revno, result.new_revid = self.target.last_revision_info()
2333
def _pull(self, overwrite=False, stop_revision=None,
2334
possible_transports=None, _hook_master=None, run_hooks=True,
2335
_override_hook_target=None, local=False,
2336
merge_tags_to_master=True, tag_selector=None):
2339
This function is the core worker, used by GenericInterBranch.pull to
2340
avoid duplication when pulling source->master and source->local.
2342
:param _hook_master: Private parameter - set the branch to
2343
be supplied as the master to pull hooks.
2344
:param run_hooks: Private parameter - if false, this branch
2345
is being called because it's the master of the primary branch,
2346
so it should not run its hooks.
2347
is being called because it's the master of the primary branch,
2348
so it should not run its hooks.
2349
:param _override_hook_target: Private parameter - set the branch to be
2350
supplied as the target_branch to pull hooks.
2351
:param local: Only update the local branch, and not the bound branch.
2353
# This type of branch can't be bound.
2355
raise errors.LocalRequiresBoundBranch()
2356
result = PullResult()
2357
result.source_branch = self.source
2358
if _override_hook_target is None:
2359
result.target_branch = self.target
2361
result.target_branch = _override_hook_target
2362
with self.source.lock_read():
2363
# We assume that during 'pull' the target repository is closer than
2365
graph = self.target.repository.get_graph(self.source.repository)
2366
# TODO: Branch formats should have a flag that indicates
2367
# that revno's are expensive, and pull() should honor that flag.
2369
result.old_revno, result.old_revid = \
2370
self.target.last_revision_info()
2371
overwrite = _fix_overwrite_type(overwrite)
2372
self._update_revisions(
2373
stop_revision, overwrite=("history" in overwrite), graph=graph)
2374
# TODO: The old revid should be specified when merging tags,
2375
# so a tags implementation that versions tags can only
2376
# pull in the most recent changes. -- JRV20090506
2377
result.tag_updates, result.tag_conflicts = (
2378
self.source.tags.merge_to(
2379
self.target.tags, "tags" in overwrite,
2380
ignore_master=not merge_tags_to_master,
2381
selector=tag_selector))
2382
self.update_references()
2383
result.new_revno, result.new_revid = (
2384
self.target.last_revision_info())
2386
result.master_branch = _hook_master
2387
result.local_branch = result.target_branch
2389
result.master_branch = result.target_branch
2390
result.local_branch = None
2392
for hook in Branch.hooks['post_pull']:
2396
def update_references(self):
2397
if not getattr(self.source._format, 'supports_reference_locations', False):
2399
reference_dict = self.source._get_all_reference_info()
2400
if len(reference_dict) == 0:
2402
old_base = self.source.base
2403
new_base = self.target.base
2404
target_reference_dict = self.target._get_all_reference_info()
2405
for tree_path, (branch_location, file_id) in reference_dict.items():
2407
branch_location = urlutils.rebase_url(branch_location,
2409
except urlutils.InvalidRebaseURLs:
2410
# Fall back to absolute URL
2411
branch_location = urlutils.join(old_base, branch_location)
2412
target_reference_dict.setdefault(
2413
tree_path, (branch_location, file_id))
2414
self.target._set_all_reference_info(target_reference_dict)
2417
InterBranch.register_optimiser(GenericInterBranch)
added
removed
breezy/branch.py
