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# Copyright (C) 2005-2010 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TransportConfig
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from bzrlib.repofmt.pack_repo import RepositoryFormatKnitPack5RichRoot
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.hooks import HookPoint, Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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hooks: An instance of BranchHooks.
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# this is really an instance variable - FIXME move it there
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def __init__(self, *ignored, **ignored_too):
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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._merge_sorted_revisions_cache = None
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hooks = Branch.hooks['open']
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def _open_hook(self):
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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):
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"""Activate the branch/repository from url as a fallback repository."""
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repo = self._get_fallback_repository(url)
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if repo.has_same_location(self.repository):
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raise errors.UnstackableLocationError(self.base, 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(self.repository._format,
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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] == _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 = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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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 unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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return control.open_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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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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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,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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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 is not None:
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# return the master branch value
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except errors.BzrError, 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 and
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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):
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raise NotImplementedError(self.lock_write)
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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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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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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.iteritems()
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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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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 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 returning
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# I would rather not, and instead just declare that users should not
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# 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 = dict((rev_id, revno)
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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, 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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: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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# 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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last_key = (last_revision,)
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known_graph = self.repository.revisions.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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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, stop_rule):
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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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rev_id = node.key[-1]
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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 = 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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rev_id = node.key[-1]
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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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rev_id = node.key[-1]
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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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rev_id = node.key[-1]
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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':
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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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rev_id = node.key[-1]
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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 or
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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 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 supported.
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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 supported.
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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.base)
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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.base)
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self.get_config().set_user_option('append_revisions_only', value,
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def set_reference_info(self, file_id, tree_path, branch_location):
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"""Set the branch location to use for a tree reference."""
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raise errors.UnsupportedOperation(self.set_reference_info, self)
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def get_reference_info(self, file_id):
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"""Get the tree_path and branch_location for a tree reference."""
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raise errors.UnsupportedOperation(self.get_reference_info, self)
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def fetch(self, from_branch, last_revision=None, pb=None):
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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 last_revision: What revision to stop at (None for at the end
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:param pb: An optional progress bar to use.
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if self.base == from_branch.base:
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symbol_versioning.warn(
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symbol_versioning.deprecated_in((1, 14, 0))
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% "pb parameter to fetch()")
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from_branch.lock_read()
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if last_revision is None:
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last_revision = from_branch.last_revision()
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last_revision = _mod_revision.ensure_null(last_revision)
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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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.base)
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def get_commit_builder(self, parents, config=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this branch.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Optional configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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config = self.get_config()
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return self.repository.get_commit_builder(self, parents, config,
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timestamp, timezone, committer, revprops, revision_id)
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def get_master_branch(self, possible_transports=None):
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"""Return the branch we are bound to.
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:return: Either a Branch, or None
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise errors.InvalidRevisionNumber(revno)
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return self.repository.get_revision_delta(rh[revno-1])
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def get_stacked_on_url(self):
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"""Get the URL this branch is stacked against.
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:raises NotStacked: If the branch is not stacked.
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:raises UnstackableBranchFormat: If the branch does not support
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raise NotImplementedError(self.get_stacked_on_url)
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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raise NotImplementedError(self.print_file)
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def set_revision_history(self, rev_history):
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raise NotImplementedError(self.set_revision_history)
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def set_parent(self, url):
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"""See Branch.set_parent."""
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# TODO: Maybe delete old location files?
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# URLs should never be unicode, even on the local fs,
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# FIXUP this and get_parent in a future branch format bump:
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# read and rewrite the file. RBC 20060125
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if isinstance(url, unicode):
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url = url.encode('ascii')
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except UnicodeEncodeError:
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raise errors.InvalidURL(url,
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"Urls must be 7-bit ascii, "
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"use bzrlib.urlutils.escape")
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url = urlutils.relative_url(self.base, url)
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self._set_parent_location(url)
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def set_stacked_on_url(self, url):
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"""Set the URL this branch is stacked against.
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:raises UnstackableBranchFormat: If the branch does not support
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:raises UnstackableRepositoryFormat: If the repository does not support
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if not self._format.supports_stacking():
692
raise errors.UnstackableBranchFormat(self._format, self.base)
693
# XXX: Changing from one fallback repository to another does not check
694
# that all the data you need is present in the new fallback.
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# Possibly it should.
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self._check_stackable_repo()
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old_url = self.get_stacked_on_url()
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except (errors.NotStacked, errors.UnstackableBranchFormat,
701
errors.UnstackableRepositoryFormat):
705
self._activate_fallback_location(url)
706
# write this out after the repository is stacked to avoid setting a
707
# stacked config that doesn't work.
708
self._set_config_location('stacked_on_location', url)
711
"""Change a branch to be unstacked, copying data as needed.
713
Don't call this directly, use set_stacked_on_url(None).
715
pb = ui.ui_factory.nested_progress_bar()
717
pb.update("Unstacking")
718
# The basic approach here is to fetch the tip of the branch,
719
# including all available ghosts, from the existing stacked
720
# repository into a new repository object without the fallbacks.
722
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
723
# correct for CHKMap repostiories
724
old_repository = self.repository
725
if len(old_repository._fallback_repositories) != 1:
726
raise AssertionError("can't cope with fallback repositories "
727
"of %r" % (self.repository,))
728
# unlock it, including unlocking the fallback
729
old_repository.unlock()
730
old_repository.lock_read()
732
# Repositories don't offer an interface to remove fallback
733
# repositories today; take the conceptually simpler option and just
734
# reopen it. We reopen it starting from the URL so that we
735
# get a separate connection for RemoteRepositories and can
736
# stream from one of them to the other. This does mean doing
737
# separate SSH connection setup, but unstacking is not a
738
# common operation so it's tolerable.
739
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
740
new_repository = new_bzrdir.find_repository()
741
self.repository = new_repository
742
if self.repository._fallback_repositories:
743
raise AssertionError("didn't expect %r to have "
744
"fallback_repositories"
745
% (self.repository,))
746
# this is not paired with an unlock because it's just restoring
747
# the previous state; the lock's released when set_stacked_on_url
749
self.repository.lock_write()
750
# XXX: If you unstack a branch while it has a working tree
751
# with a pending merge, the pending-merged revisions will no
752
# longer be present. You can (probably) revert and remerge.
754
# XXX: This only fetches up to the tip of the repository; it
755
# doesn't bring across any tags. That's fairly consistent
756
# with how branch works, but perhaps not ideal.
757
self.repository.fetch(old_repository,
758
revision_id=self.last_revision(),
761
old_repository.unlock()
765
def _set_tags_bytes(self, bytes):
766
"""Mirror method for _get_tags_bytes.
768
:seealso: Branch._get_tags_bytes.
770
return _run_with_write_locked_target(self, self._transport.put_bytes,
773
def _cache_revision_history(self, rev_history):
774
"""Set the cached revision history to rev_history.
776
The revision_history method will use this cache to avoid regenerating
777
the revision history.
779
This API is semi-public; it only for use by subclasses, all other code
780
should consider it to be private.
782
self._revision_history_cache = rev_history
784
def _cache_revision_id_to_revno(self, revision_id_to_revno):
785
"""Set the cached revision_id => revno map to revision_id_to_revno.
787
This API is semi-public; it only for use by subclasses, all other code
788
should consider it to be private.
790
self._revision_id_to_revno_cache = revision_id_to_revno
792
def _clear_cached_state(self):
793
"""Clear any cached data on this branch, e.g. cached revision history.
795
This means the next call to revision_history will need to call
796
_gen_revision_history.
798
This API is semi-public; it only for use by subclasses, all other code
799
should consider it to be private.
801
self._revision_history_cache = None
802
self._revision_id_to_revno_cache = None
803
self._last_revision_info_cache = None
804
self._merge_sorted_revisions_cache = None
805
self._partial_revision_history_cache = []
806
self._partial_revision_id_to_revno_cache = {}
808
def _gen_revision_history(self):
809
"""Return sequence of revision hashes on to this branch.
811
Unlike revision_history, this method always regenerates or rereads the
812
revision history, i.e. it does not cache the result, so repeated calls
815
Concrete subclasses should override this instead of revision_history so
816
that subclasses do not need to deal with caching logic.
818
This API is semi-public; it only for use by subclasses, all other code
819
should consider it to be private.
821
raise NotImplementedError(self._gen_revision_history)
824
def revision_history(self):
825
"""Return sequence of revision ids on this branch.
827
This method will cache the revision history for as long as it is safe to
830
if 'evil' in debug.debug_flags:
831
mutter_callsite(3, "revision_history scales with history.")
832
if self._revision_history_cache is not None:
833
history = self._revision_history_cache
835
history = self._gen_revision_history()
836
self._cache_revision_history(history)
840
"""Return current revision number for this branch.
842
That is equivalent to the number of revisions committed to
845
return self.last_revision_info()[0]
848
"""Older format branches cannot bind or unbind."""
849
raise errors.UpgradeRequired(self.base)
851
def last_revision(self):
852
"""Return last revision id, or NULL_REVISION."""
853
return self.last_revision_info()[1]
856
def last_revision_info(self):
857
"""Return information about the last revision.
859
:return: A tuple (revno, revision_id).
861
if self._last_revision_info_cache is None:
862
self._last_revision_info_cache = self._last_revision_info()
863
return self._last_revision_info_cache
865
def _last_revision_info(self):
866
rh = self.revision_history()
869
return (revno, rh[-1])
871
return (0, _mod_revision.NULL_REVISION)
873
@deprecated_method(deprecated_in((1, 6, 0)))
874
def missing_revisions(self, other, stop_revision=None):
875
"""Return a list of new revisions that would perfectly fit.
877
If self and other have not diverged, return a list of the revisions
878
present in other, but missing from self.
880
self_history = self.revision_history()
881
self_len = len(self_history)
882
other_history = other.revision_history()
883
other_len = len(other_history)
884
common_index = min(self_len, other_len) -1
885
if common_index >= 0 and \
886
self_history[common_index] != other_history[common_index]:
887
raise errors.DivergedBranches(self, other)
889
if stop_revision is None:
890
stop_revision = other_len
892
if stop_revision > other_len:
893
raise errors.NoSuchRevision(self, stop_revision)
894
return other_history[self_len:stop_revision]
897
def update_revisions(self, other, stop_revision=None, overwrite=False,
899
"""Pull in new perfect-fit revisions.
901
:param other: Another Branch to pull from
902
:param stop_revision: Updated until the given revision
903
:param overwrite: Always set the branch pointer, rather than checking
904
to see if it is a proper descendant.
905
:param graph: A Graph object that can be used to query history
906
information. This can be None.
909
return InterBranch.get(other, self).update_revisions(stop_revision,
912
def import_last_revision_info(self, source_repo, revno, revid):
913
"""Set the last revision info, importing from another repo if necessary.
915
This is used by the bound branch code to upload a revision to
916
the master branch first before updating the tip of the local branch.
918
:param source_repo: Source repository to optionally fetch from
919
:param revno: Revision number of the new tip
920
:param revid: Revision id of the new tip
922
if not self.repository.has_same_location(source_repo):
923
self.repository.fetch(source_repo, revision_id=revid)
924
self.set_last_revision_info(revno, revid)
926
def revision_id_to_revno(self, revision_id):
927
"""Given a revision id, return its revno"""
928
if _mod_revision.is_null(revision_id):
930
history = self.revision_history()
932
return history.index(revision_id) + 1
934
raise errors.NoSuchRevision(self, revision_id)
937
def get_rev_id(self, revno, history=None):
938
"""Find the revision id of the specified revno."""
940
return _mod_revision.NULL_REVISION
941
last_revno, last_revid = self.last_revision_info()
942
if revno == last_revno:
944
if revno <= 0 or revno > last_revno:
945
raise errors.NoSuchRevision(self, revno)
946
distance_from_last = last_revno - revno
947
if len(self._partial_revision_history_cache) <= distance_from_last:
948
self._extend_partial_history(distance_from_last)
949
return self._partial_revision_history_cache[distance_from_last]
952
def pull(self, source, overwrite=False, stop_revision=None,
953
possible_transports=None, *args, **kwargs):
954
"""Mirror source into this branch.
956
This branch is considered to be 'local', having low latency.
958
:returns: PullResult instance
960
return InterBranch.get(source, self).pull(overwrite=overwrite,
961
stop_revision=stop_revision,
962
possible_transports=possible_transports, *args, **kwargs)
964
def push(self, target, overwrite=False, stop_revision=None, *args,
966
"""Mirror this branch into target.
968
This branch is considered to be 'local', having low latency.
970
return InterBranch.get(self, target).push(overwrite, stop_revision,
973
def lossy_push(self, target, stop_revision=None):
974
"""Push deltas into another branch.
976
:note: This does not, like push, retain the revision ids from
977
the source branch and will, rather than adding bzr-specific
978
metadata, push only those semantics of the revision that can be
979
natively represented by this branch' VCS.
981
:param target: Target branch
982
:param stop_revision: Revision to push, defaults to last revision.
983
:return: BranchPushResult with an extra member revidmap:
984
A dictionary mapping revision ids from the target branch
985
to new revision ids in the target branch, for each
986
revision that was pushed.
988
inter = InterBranch.get(self, target)
989
lossy_push = getattr(inter, "lossy_push", None)
990
if lossy_push is None:
991
raise errors.LossyPushToSameVCS(self, target)
992
return lossy_push(stop_revision)
994
def basis_tree(self):
995
"""Return `Tree` object for last revision."""
996
return self.repository.revision_tree(self.last_revision())
998
def get_parent(self):
999
"""Return the parent location of the branch.
1001
This is the default location for pull/missing. The usual
1002
pattern is that the user can override it by specifying a
1005
parent = self._get_parent_location()
1008
# This is an old-format absolute path to a local branch
1009
# turn it into a url
1010
if parent.startswith('/'):
1011
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1013
return urlutils.join(self.base[:-1], parent)
1014
except errors.InvalidURLJoin, e:
1015
raise errors.InaccessibleParent(parent, self.base)
1017
def _get_parent_location(self):
1018
raise NotImplementedError(self._get_parent_location)
1020
def _set_config_location(self, name, url, config=None,
1021
make_relative=False):
1023
config = self.get_config()
1027
url = urlutils.relative_url(self.base, url)
1028
config.set_user_option(name, url, warn_masked=True)
1030
def _get_config_location(self, name, config=None):
1032
config = self.get_config()
1033
location = config.get_user_option(name)
1038
def get_child_submit_format(self):
1039
"""Return the preferred format of submissions to this branch."""
1040
return self.get_config().get_user_option("child_submit_format")
1042
def get_submit_branch(self):
1043
"""Return the submit location of the branch.
1045
This is the default location for bundle. The usual
1046
pattern is that the user can override it by specifying a
1049
return self.get_config().get_user_option('submit_branch')
1051
def set_submit_branch(self, location):
1052
"""Return the submit location of the branch.
1054
This is the default location for bundle. The usual
1055
pattern is that the user can override it by specifying a
1058
self.get_config().set_user_option('submit_branch', location,
1061
def get_public_branch(self):
1062
"""Return the public location of the branch.
1064
This is used by merge directives.
1066
return self._get_config_location('public_branch')
1068
def set_public_branch(self, location):
1069
"""Return the submit location of the branch.
1071
This is the default location for bundle. The usual
1072
pattern is that the user can override it by specifying a
1075
self._set_config_location('public_branch', location)
1077
def get_push_location(self):
1078
"""Return the None or the location to push this branch to."""
1079
push_loc = self.get_config().get_user_option('push_location')
1082
def set_push_location(self, location):
1083
"""Set a new push location for this branch."""
1084
raise NotImplementedError(self.set_push_location)
1086
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1087
"""Run the post_change_branch_tip hooks."""
1088
hooks = Branch.hooks['post_change_branch_tip']
1091
new_revno, new_revid = self.last_revision_info()
1092
params = ChangeBranchTipParams(
1093
self, old_revno, new_revno, old_revid, new_revid)
1097
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1098
"""Run the pre_change_branch_tip hooks."""
1099
hooks = Branch.hooks['pre_change_branch_tip']
1102
old_revno, old_revid = self.last_revision_info()
1103
params = ChangeBranchTipParams(
1104
self, old_revno, new_revno, old_revid, new_revid)
1110
"""Synchronise this branch with the master branch if any.
1112
:return: None or the last_revision pivoted out during the update.
1116
def check_revno(self, revno):
1118
Check whether a revno corresponds to any revision.
1119
Zero (the NULL revision) is considered valid.
1122
self.check_real_revno(revno)
1124
def check_real_revno(self, revno):
1126
Check whether a revno corresponds to a real revision.
1127
Zero (the NULL revision) is considered invalid
1129
if revno < 1 or revno > self.revno():
1130
raise errors.InvalidRevisionNumber(revno)
1133
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
1134
"""Clone this branch into to_bzrdir preserving all semantic values.
1136
Most API users will want 'create_clone_on_transport', which creates a
1137
new bzrdir and branch on the fly.
1139
revision_id: if not None, the revision history in the new branch will
1140
be truncated to end with revision_id.
1142
result = to_bzrdir.create_branch()
1145
if repository_policy is not None:
1146
repository_policy.configure_branch(result)
1147
self.copy_content_into(result, revision_id=revision_id)
1153
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
1154
"""Create a new line of development from the branch, into to_bzrdir.
1156
to_bzrdir controls the branch format.
1158
revision_id: if not None, the revision history in the new branch will
1159
be truncated to end with revision_id.
1161
if (repository_policy is not None and
1162
repository_policy.requires_stacking()):
1163
to_bzrdir._format.require_stacking(_skip_repo=True)
1164
result = to_bzrdir.create_branch()
1167
if repository_policy is not None:
1168
repository_policy.configure_branch(result)
1169
self.copy_content_into(result, revision_id=revision_id)
1170
result.set_parent(self.bzrdir.root_transport.base)
1175
def _synchronize_history(self, destination, revision_id):
1176
"""Synchronize last revision and revision history between branches.
1178
This version is most efficient when the destination is also a
1179
BzrBranch6, but works for BzrBranch5, as long as the destination's
1180
repository contains all the lefthand ancestors of the intended
1181
last_revision. If not, set_last_revision_info will fail.
1183
:param destination: The branch to copy the history into
1184
:param revision_id: The revision-id to truncate history at. May
1185
be None to copy complete history.
1187
source_revno, source_revision_id = self.last_revision_info()
1188
if revision_id is None:
1189
revno, revision_id = source_revno, source_revision_id
1191
graph = self.repository.get_graph()
1193
revno = graph.find_distance_to_null(revision_id,
1194
[(source_revision_id, source_revno)])
1195
except errors.GhostRevisionsHaveNoRevno:
1196
# Default to 1, if we can't find anything else
1198
destination.set_last_revision_info(revno, revision_id)
1201
def copy_content_into(self, destination, revision_id=None):
1202
"""Copy the content of self into destination.
1204
revision_id: if not None, the revision history in the new branch will
1205
be truncated to end with revision_id.
1207
self.update_references(destination)
1208
self._synchronize_history(destination, revision_id)
1210
parent = self.get_parent()
1211
except errors.InaccessibleParent, e:
1212
mutter('parent was not accessible to copy: %s', e)
1215
destination.set_parent(parent)
1216
if self._push_should_merge_tags():
1217
self.tags.merge_to(destination.tags)
1219
def update_references(self, target):
1220
if not getattr(self._format, 'supports_reference_locations', False):
1222
reference_dict = self._get_all_reference_info()
1223
if len(reference_dict) == 0:
1225
old_base = self.base
1226
new_base = target.base
1227
target_reference_dict = target._get_all_reference_info()
1228
for file_id, (tree_path, branch_location) in (
1229
reference_dict.items()):
1230
branch_location = urlutils.rebase_url(branch_location,
1232
target_reference_dict.setdefault(
1233
file_id, (tree_path, branch_location))
1234
target._set_all_reference_info(target_reference_dict)
1237
def check(self, refs):
1238
"""Check consistency of the branch.
1240
In particular this checks that revisions given in the revision-history
1241
do actually match up in the revision graph, and that they're all
1242
present in the repository.
1244
Callers will typically also want to check the repository.
1246
:param refs: Calculated refs for this branch as specified by
1247
branch._get_check_refs()
1248
:return: A BranchCheckResult.
1250
result = BranchCheckResult(self)
1251
last_revno, last_revision_id = self.last_revision_info()
1252
actual_revno = refs[('lefthand-distance', last_revision_id)]
1253
if actual_revno != last_revno:
1254
result.errors.append(errors.BzrCheckError(
1255
'revno does not match len(mainline) %s != %s' % (
1256
last_revno, actual_revno)))
1257
# TODO: We should probably also check that self.revision_history
1258
# matches the repository for older branch formats.
1259
# If looking for the code that cross-checks repository parents against
1260
# the iter_reverse_revision_history output, that is now a repository
1264
def _get_checkout_format(self):
1265
"""Return the most suitable metadir for a checkout of this branch.
1266
Weaves are used if this branch's repository uses weaves.
1268
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1269
from bzrlib.repofmt import weaverepo
1270
format = bzrdir.BzrDirMetaFormat1()
1271
format.repository_format = weaverepo.RepositoryFormat7()
1273
format = self.repository.bzrdir.checkout_metadir()
1274
format.set_branch_format(self._format)
1277
def create_clone_on_transport(self, to_transport, revision_id=None,
1278
stacked_on=None, create_prefix=False, use_existing_dir=False):
1279
"""Create a clone of this branch and its bzrdir.
1281
:param to_transport: The transport to clone onto.
1282
:param revision_id: The revision id to use as tip in the new branch.
1283
If None the tip is obtained from this branch.
1284
:param stacked_on: An optional URL to stack the clone on.
1285
:param create_prefix: Create any missing directories leading up to
1287
:param use_existing_dir: Use an existing directory if one exists.
1289
# XXX: Fix the bzrdir API to allow getting the branch back from the
1290
# clone call. Or something. 20090224 RBC/spiv.
1291
if revision_id is None:
1292
revision_id = self.last_revision()
1293
dir_to = self.bzrdir.clone_on_transport(to_transport,
1294
revision_id=revision_id, stacked_on=stacked_on,
1295
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1296
return dir_to.open_branch()
1298
def create_checkout(self, to_location, revision_id=None,
1299
lightweight=False, accelerator_tree=None,
1301
"""Create a checkout of a branch.
1303
:param to_location: The url to produce the checkout at
1304
:param revision_id: The revision to check out
1305
:param lightweight: If True, produce a lightweight checkout, otherwise,
1306
produce a bound branch (heavyweight checkout)
1307
:param accelerator_tree: A tree which can be used for retrieving file
1308
contents more quickly than the revision tree, i.e. a workingtree.
1309
The revision tree will be used for cases where accelerator_tree's
1310
content is different.
1311
:param hardlink: If true, hard-link files from accelerator_tree,
1313
:return: The tree of the created checkout
1315
t = transport.get_transport(to_location)
1318
format = self._get_checkout_format()
1319
checkout = format.initialize_on_transport(t)
1320
from_branch = BranchReferenceFormat().initialize(checkout,
1323
format = self._get_checkout_format()
1324
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1325
to_location, force_new_tree=False, format=format)
1326
checkout = checkout_branch.bzrdir
1327
checkout_branch.bind(self)
1328
# pull up to the specified revision_id to set the initial
1329
# branch tip correctly, and seed it with history.
1330
checkout_branch.pull(self, stop_revision=revision_id)
1332
tree = checkout.create_workingtree(revision_id,
1333
from_branch=from_branch,
1334
accelerator_tree=accelerator_tree,
1336
basis_tree = tree.basis_tree()
1337
basis_tree.lock_read()
1339
for path, file_id in basis_tree.iter_references():
1340
reference_parent = self.reference_parent(file_id, path)
1341
reference_parent.create_checkout(tree.abspath(path),
1342
basis_tree.get_reference_revision(file_id, path),
1349
def reconcile(self, thorough=True):
1350
"""Make sure the data stored in this branch is consistent."""
1351
from bzrlib.reconcile import BranchReconciler
1352
reconciler = BranchReconciler(self, thorough=thorough)
1353
reconciler.reconcile()
1356
def reference_parent(self, file_id, path, possible_transports=None):
1357
"""Return the parent branch for a tree-reference file_id
1358
:param file_id: The file_id of the tree reference
1359
:param path: The path of the file_id in the tree
1360
:return: A branch associated with the file_id
1362
# FIXME should provide multiple branches, based on config
1363
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1364
possible_transports=possible_transports)
1366
def supports_tags(self):
1367
return self._format.supports_tags()
1369
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1371
"""Ensure that revision_b is a descendant of revision_a.
1373
This is a helper function for update_revisions.
1375
:raises: DivergedBranches if revision_b has diverged from revision_a.
1376
:returns: True if revision_b is a descendant of revision_a.
1378
relation = self._revision_relations(revision_a, revision_b, graph)
1379
if relation == 'b_descends_from_a':
1381
elif relation == 'diverged':
1382
raise errors.DivergedBranches(self, other_branch)
1383
elif relation == 'a_descends_from_b':
1386
raise AssertionError("invalid relation: %r" % (relation,))
1388
def _revision_relations(self, revision_a, revision_b, graph):
1389
"""Determine the relationship between two revisions.
1391
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1393
heads = graph.heads([revision_a, revision_b])
1394
if heads == set([revision_b]):
1395
return 'b_descends_from_a'
1396
elif heads == set([revision_a, revision_b]):
1397
# These branches have diverged
1399
elif heads == set([revision_a]):
1400
return 'a_descends_from_b'
1402
raise AssertionError("invalid heads: %r" % (heads,))
1405
class BranchFormat(object):
1406
"""An encapsulation of the initialization and open routines for a format.
1408
Formats provide three things:
1409
* An initialization routine,
1413
Formats are placed in an dict by their format string for reference
1414
during branch opening. Its not required that these be instances, they
1415
can be classes themselves with class methods - it simply depends on
1416
whether state is needed for a given format or not.
1418
Once a format is deprecated, just deprecate the initialize and open
1419
methods on the format class. Do not deprecate the object, as the
1420
object will be created every time regardless.
1423
_default_format = None
1424
"""The default format used for new branches."""
1427
"""The known formats."""
1429
can_set_append_revisions_only = True
1431
def __eq__(self, other):
1432
return self.__class__ is other.__class__
1434
def __ne__(self, other):
1435
return not (self == other)
1438
def find_format(klass, a_bzrdir, name=None):
1439
"""Return the format for the branch object in a_bzrdir."""
1441
transport = a_bzrdir.get_branch_transport(None, name=name)
1442
format_string = transport.get_bytes("format")
1443
return klass._formats[format_string]
1444
except errors.NoSuchFile:
1445
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1447
raise errors.UnknownFormatError(format=format_string, kind='branch')
1450
def get_default_format(klass):
1451
"""Return the current default format."""
1452
return klass._default_format
1454
def get_reference(self, a_bzrdir):
1455
"""Get the target reference of the branch in a_bzrdir.
1457
format probing must have been completed before calling
1458
this method - it is assumed that the format of the branch
1459
in a_bzrdir is correct.
1461
:param a_bzrdir: The bzrdir to get the branch data from.
1462
:return: None if the branch is not a reference branch.
1467
def set_reference(self, a_bzrdir, to_branch):
1468
"""Set the target reference of the branch in a_bzrdir.
1470
format probing must have been completed before calling
1471
this method - it is assumed that the format of the branch
1472
in a_bzrdir is correct.
1474
:param a_bzrdir: The bzrdir to set the branch reference for.
1475
:param to_branch: branch that the checkout is to reference
1477
raise NotImplementedError(self.set_reference)
1479
def get_format_string(self):
1480
"""Return the ASCII format string that identifies this format."""
1481
raise NotImplementedError(self.get_format_string)
1483
def get_format_description(self):
1484
"""Return the short format description for this format."""
1485
raise NotImplementedError(self.get_format_description)
1487
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1488
lock_type='metadir', set_format=True):
1489
"""Initialize a branch in a bzrdir, with specified files
1491
:param a_bzrdir: The bzrdir to initialize the branch in
1492
:param utf8_files: The files to create as a list of
1493
(filename, content) tuples
1494
:param name: Name of colocated branch to create, if any
1495
:param set_format: If True, set the format with
1496
self.get_format_string. (BzrBranch4 has its format set
1498
:return: a branch in this format
1500
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
1501
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1503
'metadir': ('lock', lockdir.LockDir),
1504
'branch4': ('branch-lock', lockable_files.TransportLock),
1506
lock_name, lock_class = lock_map[lock_type]
1507
control_files = lockable_files.LockableFiles(branch_transport,
1508
lock_name, lock_class)
1509
control_files.create_lock()
1511
control_files.lock_write()
1512
except errors.LockContention:
1513
if lock_type != 'branch4':
1519
utf8_files += [('format', self.get_format_string())]
1521
for (filename, content) in utf8_files:
1522
branch_transport.put_bytes(
1524
mode=a_bzrdir._get_file_mode())
1527
control_files.unlock()
1528
return self.open(a_bzrdir, name, _found=True)
1530
def initialize(self, a_bzrdir, name=None):
1531
"""Create a branch of this format in a_bzrdir.
1533
:param name: Name of the colocated branch to create.
1535
raise NotImplementedError(self.initialize)
1537
def is_supported(self):
1538
"""Is this format supported?
1540
Supported formats can be initialized and opened.
1541
Unsupported formats may not support initialization or committing or
1542
some other features depending on the reason for not being supported.
1546
def make_tags(self, branch):
1547
"""Create a tags object for branch.
1549
This method is on BranchFormat, because BranchFormats are reflected
1550
over the wire via network_name(), whereas full Branch instances require
1551
multiple VFS method calls to operate at all.
1553
The default implementation returns a disabled-tags instance.
1555
Note that it is normal for branch to be a RemoteBranch when using tags
1558
return DisabledTags(branch)
1560
def network_name(self):
1561
"""A simple byte string uniquely identifying this format for RPC calls.
1563
MetaDir branch formats use their disk format string to identify the
1564
repository over the wire. All in one formats such as bzr < 0.8, and
1565
foreign formats like svn/git and hg should use some marker which is
1566
unique and immutable.
1568
raise NotImplementedError(self.network_name)
1570
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1571
"""Return the branch object for a_bzrdir
1573
:param a_bzrdir: A BzrDir that contains a branch.
1574
:param name: Name of colocated branch to open
1575
:param _found: a private parameter, do not use it. It is used to
1576
indicate if format probing has already be done.
1577
:param ignore_fallbacks: when set, no fallback branches will be opened
1578
(if there are any). Default is to open fallbacks.
1580
raise NotImplementedError(self.open)
1583
def register_format(klass, format):
1584
"""Register a metadir format."""
1585
klass._formats[format.get_format_string()] = format
1586
# Metadir formats have a network name of their format string, and get
1587
# registered as class factories.
1588
network_format_registry.register(format.get_format_string(), format.__class__)
1591
def set_default_format(klass, format):
1592
klass._default_format = format
1594
def supports_set_append_revisions_only(self):
1595
"""True if this format supports set_append_revisions_only."""
1598
def supports_stacking(self):
1599
"""True if this format records a stacked-on branch."""
1603
def unregister_format(klass, format):
1604
del klass._formats[format.get_format_string()]
1607
return self.get_format_description().rstrip()
1609
def supports_tags(self):
1610
"""True if this format supports tags stored in the branch"""
1611
return False # by default
1614
class BranchHooks(Hooks):
1615
"""A dictionary mapping hook name to a list of callables for branch hooks.
1617
e.g. ['set_rh'] Is the list of items to be called when the
1618
set_revision_history function is invoked.
1622
"""Create the default hooks.
1624
These are all empty initially, because by default nothing should get
1627
Hooks.__init__(self)
1628
self.create_hook(HookPoint('set_rh',
1629
"Invoked whenever the revision history has been set via "
1630
"set_revision_history. The api signature is (branch, "
1631
"revision_history), and the branch will be write-locked. "
1632
"The set_rh hook can be expensive for bzr to trigger, a better "
1633
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1634
self.create_hook(HookPoint('open',
1635
"Called with the Branch object that has been opened after a "
1636
"branch is opened.", (1, 8), None))
1637
self.create_hook(HookPoint('post_push',
1638
"Called after a push operation completes. post_push is called "
1639
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1640
"bzr client.", (0, 15), None))
1641
self.create_hook(HookPoint('post_pull',
1642
"Called after a pull operation completes. post_pull is called "
1643
"with a bzrlib.branch.PullResult object and only runs in the "
1644
"bzr client.", (0, 15), None))
1645
self.create_hook(HookPoint('pre_commit',
1646
"Called after a commit is calculated but before it is is "
1647
"completed. pre_commit is called with (local, master, old_revno, "
1648
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1649
"). old_revid is NULL_REVISION for the first commit to a branch, "
1650
"tree_delta is a TreeDelta object describing changes from the "
1651
"basis revision. hooks MUST NOT modify this delta. "
1652
" future_tree is an in-memory tree obtained from "
1653
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1654
"tree.", (0,91), None))
1655
self.create_hook(HookPoint('post_commit',
1656
"Called in the bzr client after a commit has completed. "
1657
"post_commit is called with (local, master, old_revno, old_revid, "
1658
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1659
"commit to a branch.", (0, 15), None))
1660
self.create_hook(HookPoint('post_uncommit',
1661
"Called in the bzr client after an uncommit completes. "
1662
"post_uncommit is called with (local, master, old_revno, "
1663
"old_revid, new_revno, new_revid) where local is the local branch "
1664
"or None, master is the target branch, and an empty branch "
1665
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1666
self.create_hook(HookPoint('pre_change_branch_tip',
1667
"Called in bzr client and server before a change to the tip of a "
1668
"branch is made. pre_change_branch_tip is called with a "
1669
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1670
"commit, uncommit will all trigger this hook.", (1, 6), None))
1671
self.create_hook(HookPoint('post_change_branch_tip',
1672
"Called in bzr client and server after a change to the tip of a "
1673
"branch is made. post_change_branch_tip is called with a "
1674
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1675
"commit, uncommit will all trigger this hook.", (1, 4), None))
1676
self.create_hook(HookPoint('transform_fallback_location',
1677
"Called when a stacked branch is activating its fallback "
1678
"locations. transform_fallback_location is called with (branch, "
1679
"url), and should return a new url. Returning the same url "
1680
"allows it to be used as-is, returning a different one can be "
1681
"used to cause the branch to stack on a closer copy of that "
1682
"fallback_location. Note that the branch cannot have history "
1683
"accessing methods called on it during this hook because the "
1684
"fallback locations have not been activated. When there are "
1685
"multiple hooks installed for transform_fallback_location, "
1686
"all are called with the url returned from the previous hook."
1687
"The order is however undefined.", (1, 9), None))
1690
# install the default hooks into the Branch class.
1691
Branch.hooks = BranchHooks()
1694
class ChangeBranchTipParams(object):
1695
"""Object holding parameters passed to *_change_branch_tip hooks.
1697
There are 5 fields that hooks may wish to access:
1699
:ivar branch: the branch being changed
1700
:ivar old_revno: revision number before the change
1701
:ivar new_revno: revision number after the change
1702
:ivar old_revid: revision id before the change
1703
:ivar new_revid: revision id after the change
1705
The revid fields are strings. The revno fields are integers.
1708
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1709
"""Create a group of ChangeBranchTip parameters.
1711
:param branch: The branch being changed.
1712
:param old_revno: Revision number before the change.
1713
:param new_revno: Revision number after the change.
1714
:param old_revid: Tip revision id before the change.
1715
:param new_revid: Tip revision id after the change.
1717
self.branch = branch
1718
self.old_revno = old_revno
1719
self.new_revno = new_revno
1720
self.old_revid = old_revid
1721
self.new_revid = new_revid
1723
def __eq__(self, other):
1724
return self.__dict__ == other.__dict__
1727
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1728
self.__class__.__name__, self.branch,
1729
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1732
class BzrBranchFormat4(BranchFormat):
1733
"""Bzr branch format 4.
1736
- a revision-history file.
1737
- a branch-lock lock file [ to be shared with the bzrdir ]
1740
def get_format_description(self):
1741
"""See BranchFormat.get_format_description()."""
1742
return "Branch format 4"
1744
def initialize(self, a_bzrdir, name=None):
1745
"""Create a branch of this format in a_bzrdir."""
1746
utf8_files = [('revision-history', ''),
1747
('branch-name', ''),
1749
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1750
lock_type='branch4', set_format=False)
1753
super(BzrBranchFormat4, self).__init__()
1754
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1756
def network_name(self):
1757
"""The network name for this format is the control dirs disk label."""
1758
return self._matchingbzrdir.get_format_string()
1760
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1761
"""See BranchFormat.open()."""
1762
if name is not None:
1763
raise errors.NoColocatedBranchSupport(a_bzrdir)
1765
# we are being called directly and must probe.
1766
raise NotImplementedError
1767
return BzrBranch(_format=self,
1768
_control_files=a_bzrdir._control_files,
1770
_repository=a_bzrdir.open_repository())
1773
return "Bazaar-NG branch format 4"
1776
class BranchFormatMetadir(BranchFormat):
1777
"""Common logic for meta-dir based branch formats."""
1779
def _branch_class(self):
1780
"""What class to instantiate on open calls."""
1781
raise NotImplementedError(self._branch_class)
1783
def network_name(self):
1784
"""A simple byte string uniquely identifying this format for RPC calls.
1786
Metadir branch formats use their format string.
1788
return self.get_format_string()
1790
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1791
"""See BranchFormat.open()."""
1793
format = BranchFormat.find_format(a_bzrdir, name=name)
1794
if format.__class__ != self.__class__:
1795
raise AssertionError("wrong format %r found for %r" %
1798
transport = a_bzrdir.get_branch_transport(None, name=name)
1799
control_files = lockable_files.LockableFiles(transport, 'lock',
1801
return self._branch_class()(_format=self,
1802
_control_files=control_files,
1804
_repository=a_bzrdir.find_repository(),
1805
ignore_fallbacks=ignore_fallbacks)
1806
except errors.NoSuchFile:
1807
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1810
super(BranchFormatMetadir, self).__init__()
1811
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1812
self._matchingbzrdir.set_branch_format(self)
1814
def supports_tags(self):
1818
class BzrBranchFormat5(BranchFormatMetadir):
1819
"""Bzr branch format 5.
1822
- a revision-history file.
1824
- a lock dir guarding the branch itself
1825
- all of this stored in a branch/ subdirectory
1826
- works with shared repositories.
1828
This format is new in bzr 0.8.
1831
def _branch_class(self):
1834
def get_format_string(self):
1835
"""See BranchFormat.get_format_string()."""
1836
return "Bazaar-NG branch format 5\n"
1838
def get_format_description(self):
1839
"""See BranchFormat.get_format_description()."""
1840
return "Branch format 5"
1842
def initialize(self, a_bzrdir, name=None):
1843
"""Create a branch of this format in a_bzrdir."""
1844
utf8_files = [('revision-history', ''),
1845
('branch-name', ''),
1847
return self._initialize_helper(a_bzrdir, utf8_files, name)
1849
def supports_tags(self):
1853
class BzrBranchFormat6(BranchFormatMetadir):
1854
"""Branch format with last-revision and tags.
1856
Unlike previous formats, this has no explicit revision history. Instead,
1857
this just stores the last-revision, and the left-hand history leading
1858
up to there is the history.
1860
This format was introduced in bzr 0.15
1861
and became the default in 0.91.
1864
def _branch_class(self):
1867
def get_format_string(self):
1868
"""See BranchFormat.get_format_string()."""
1869
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1871
def get_format_description(self):
1872
"""See BranchFormat.get_format_description()."""
1873
return "Branch format 6"
1875
def initialize(self, a_bzrdir, name=None):
1876
"""Create a branch of this format in a_bzrdir."""
1877
utf8_files = [('last-revision', '0 null:\n'),
1878
('branch.conf', ''),
1881
return self._initialize_helper(a_bzrdir, utf8_files, name)
1883
def make_tags(self, branch):
1884
"""See bzrlib.branch.BranchFormat.make_tags()."""
1885
return BasicTags(branch)
1887
def supports_set_append_revisions_only(self):
1891
class BzrBranchFormat8(BranchFormatMetadir):
1892
"""Metadir format supporting storing locations of subtree branches."""
1894
def _branch_class(self):
1897
def get_format_string(self):
1898
"""See BranchFormat.get_format_string()."""
1899
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1901
def get_format_description(self):
1902
"""See BranchFormat.get_format_description()."""
1903
return "Branch format 8"
1905
def initialize(self, a_bzrdir, name=None):
1906
"""Create a branch of this format in a_bzrdir."""
1907
utf8_files = [('last-revision', '0 null:\n'),
1908
('branch.conf', ''),
1912
return self._initialize_helper(a_bzrdir, utf8_files, name)
1915
super(BzrBranchFormat8, self).__init__()
1916
self._matchingbzrdir.repository_format = \
1917
RepositoryFormatKnitPack5RichRoot()
1919
def make_tags(self, branch):
1920
"""See bzrlib.branch.BranchFormat.make_tags()."""
1921
return BasicTags(branch)
1923
def supports_set_append_revisions_only(self):
1926
def supports_stacking(self):
1929
supports_reference_locations = True
1932
class BzrBranchFormat7(BzrBranchFormat8):
1933
"""Branch format with last-revision, tags, and a stacked location pointer.
1935
The stacked location pointer is passed down to the repository and requires
1936
a repository format with supports_external_lookups = True.
1938
This format was introduced in bzr 1.6.
1941
def initialize(self, a_bzrdir, name=None):
1942
"""Create a branch of this format in a_bzrdir."""
1943
utf8_files = [('last-revision', '0 null:\n'),
1944
('branch.conf', ''),
1947
return self._initialize_helper(a_bzrdir, utf8_files, name)
1949
def _branch_class(self):
1952
def get_format_string(self):
1953
"""See BranchFormat.get_format_string()."""
1954
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
1956
def get_format_description(self):
1957
"""See BranchFormat.get_format_description()."""
1958
return "Branch format 7"
1960
def supports_set_append_revisions_only(self):
1963
supports_reference_locations = False
1966
class BranchReferenceFormat(BranchFormat):
1967
"""Bzr branch reference format.
1969
Branch references are used in implementing checkouts, they
1970
act as an alias to the real branch which is at some other url.
1977
def get_format_string(self):
1978
"""See BranchFormat.get_format_string()."""
1979
return "Bazaar-NG Branch Reference Format 1\n"
1981
def get_format_description(self):
1982
"""See BranchFormat.get_format_description()."""
1983
return "Checkout reference format 1"
1985
def get_reference(self, a_bzrdir):
1986
"""See BranchFormat.get_reference()."""
1987
transport = a_bzrdir.get_branch_transport(None)
1988
return transport.get_bytes('location')
1990
def set_reference(self, a_bzrdir, to_branch):
1991
"""See BranchFormat.set_reference()."""
1992
transport = a_bzrdir.get_branch_transport(None)
1993
location = transport.put_bytes('location', to_branch.base)
1995
def initialize(self, a_bzrdir, name=None, target_branch=None):
1996
"""Create a branch of this format in a_bzrdir."""
1997
if target_branch is None:
1998
# this format does not implement branch itself, thus the implicit
1999
# creation contract must see it as uninitializable
2000
raise errors.UninitializableFormat(self)
2001
mutter('creating branch reference in %s', a_bzrdir.transport.base)
2002
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
2003
branch_transport.put_bytes('location',
2004
target_branch.bzrdir.root_transport.base)
2005
branch_transport.put_bytes('format', self.get_format_string())
2007
a_bzrdir, name, _found=True,
2008
possible_transports=[target_branch.bzrdir.root_transport])
2011
super(BranchReferenceFormat, self).__init__()
2012
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2013
self._matchingbzrdir.set_branch_format(self)
2015
def _make_reference_clone_function(format, a_branch):
2016
"""Create a clone() routine for a branch dynamically."""
2017
def clone(to_bzrdir, revision_id=None,
2018
repository_policy=None):
2019
"""See Branch.clone()."""
2020
return format.initialize(to_bzrdir, target_branch=a_branch)
2021
# cannot obey revision_id limits when cloning a reference ...
2022
# FIXME RBC 20060210 either nuke revision_id for clone, or
2023
# emit some sort of warning/error to the caller ?!
2026
def open(self, a_bzrdir, name=None, _found=False, location=None,
2027
possible_transports=None, ignore_fallbacks=False):
2028
"""Return the branch that the branch reference in a_bzrdir points at.
2030
:param a_bzrdir: A BzrDir that contains a branch.
2031
:param name: Name of colocated branch to open, if any
2032
:param _found: a private parameter, do not use it. It is used to
2033
indicate if format probing has already be done.
2034
:param ignore_fallbacks: when set, no fallback branches will be opened
2035
(if there are any). Default is to open fallbacks.
2036
:param location: The location of the referenced branch. If
2037
unspecified, this will be determined from the branch reference in
2039
:param possible_transports: An optional reusable transports list.
2042
format = BranchFormat.find_format(a_bzrdir, name=name)
2043
if format.__class__ != self.__class__:
2044
raise AssertionError("wrong format %r found for %r" %
2046
if location is None:
2047
location = self.get_reference(a_bzrdir)
2048
real_bzrdir = bzrdir.BzrDir.open(
2049
location, possible_transports=possible_transports)
2050
result = real_bzrdir.open_branch(name=name,
2051
ignore_fallbacks=ignore_fallbacks)
2052
# this changes the behaviour of result.clone to create a new reference
2053
# rather than a copy of the content of the branch.
2054
# I did not use a proxy object because that needs much more extensive
2055
# testing, and we are only changing one behaviour at the moment.
2056
# If we decide to alter more behaviours - i.e. the implicit nickname
2057
# then this should be refactored to introduce a tested proxy branch
2058
# and a subclass of that for use in overriding clone() and ....
2060
result.clone = self._make_reference_clone_function(result)
2064
network_format_registry = registry.FormatRegistry()
2065
"""Registry of formats indexed by their network name.
2067
The network name for a branch format is an identifier that can be used when
2068
referring to formats with smart server operations. See
2069
BranchFormat.network_name() for more detail.
2073
# formats which have no format string are not discoverable
2074
# and not independently creatable, so are not registered.
2075
__format5 = BzrBranchFormat5()
2076
__format6 = BzrBranchFormat6()
2077
__format7 = BzrBranchFormat7()
2078
__format8 = BzrBranchFormat8()
2079
BranchFormat.register_format(__format5)
2080
BranchFormat.register_format(BranchReferenceFormat())
2081
BranchFormat.register_format(__format6)
2082
BranchFormat.register_format(__format7)
2083
BranchFormat.register_format(__format8)
2084
BranchFormat.set_default_format(__format7)
2085
_legacy_formats = [BzrBranchFormat4(),
2087
network_format_registry.register(
2088
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2091
class BzrBranch(Branch, _RelockDebugMixin):
2092
"""A branch stored in the actual filesystem.
2094
Note that it's "local" in the context of the filesystem; it doesn't
2095
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2096
it's writable, and can be accessed via the normal filesystem API.
2098
:ivar _transport: Transport for file operations on this branch's
2099
control files, typically pointing to the .bzr/branch directory.
2100
:ivar repository: Repository for this branch.
2101
:ivar base: The url of the base directory for this branch; the one
2102
containing the .bzr directory.
2105
def __init__(self, _format=None,
2106
_control_files=None, a_bzrdir=None, _repository=None,
2107
ignore_fallbacks=False):
2108
"""Create new branch object at a particular location."""
2109
if a_bzrdir is None:
2110
raise ValueError('a_bzrdir must be supplied')
2112
self.bzrdir = a_bzrdir
2113
self._base = self.bzrdir.transport.clone('..').base
2114
# XXX: We should be able to just do
2115
# self.base = self.bzrdir.root_transport.base
2116
# but this does not quite work yet -- mbp 20080522
2117
self._format = _format
2118
if _control_files is None:
2119
raise ValueError('BzrBranch _control_files is None')
2120
self.control_files = _control_files
2121
self._transport = _control_files._transport
2122
self.repository = _repository
2123
Branch.__init__(self)
2126
return '%s(%r)' % (self.__class__.__name__, self.base)
2130
def _get_base(self):
2131
"""Returns the directory containing the control directory."""
2134
base = property(_get_base, doc="The URL for the root of this branch.")
2136
def _get_config(self):
2137
return TransportConfig(self._transport, 'branch.conf')
2139
def is_locked(self):
2140
return self.control_files.is_locked()
2142
def lock_write(self, token=None):
2143
if not self.is_locked():
2144
self._note_lock('w')
2145
# All-in-one needs to always unlock/lock.
2146
repo_control = getattr(self.repository, 'control_files', None)
2147
if self.control_files == repo_control or not self.is_locked():
2148
self.repository._warn_if_deprecated(self)
2149
self.repository.lock_write()
2154
return self.control_files.lock_write(token=token)
2157
self.repository.unlock()
2160
def lock_read(self):
2161
if not self.is_locked():
2162
self._note_lock('r')
2163
# All-in-one needs to always unlock/lock.
2164
repo_control = getattr(self.repository, 'control_files', None)
2165
if self.control_files == repo_control or not self.is_locked():
2166
self.repository._warn_if_deprecated(self)
2167
self.repository.lock_read()
2172
self.control_files.lock_read()
2175
self.repository.unlock()
2178
@only_raises(errors.LockNotHeld, errors.LockBroken)
2181
self.control_files.unlock()
2183
# All-in-one needs to always unlock/lock.
2184
repo_control = getattr(self.repository, 'control_files', None)
2185
if (self.control_files == repo_control or
2186
not self.control_files.is_locked()):
2187
self.repository.unlock()
2188
if not self.control_files.is_locked():
2189
# we just released the lock
2190
self._clear_cached_state()
2192
def peek_lock_mode(self):
2193
if self.control_files._lock_count == 0:
2196
return self.control_files._lock_mode
2198
def get_physical_lock_status(self):
2199
return self.control_files.get_physical_lock_status()
2202
def print_file(self, file, revision_id):
2203
"""See Branch.print_file."""
2204
return self.repository.print_file(file, revision_id)
2206
def _write_revision_history(self, history):
2207
"""Factored out of set_revision_history.
2209
This performs the actual writing to disk.
2210
It is intended to be called by BzrBranch5.set_revision_history."""
2211
self._transport.put_bytes(
2212
'revision-history', '\n'.join(history),
2213
mode=self.bzrdir._get_file_mode())
2216
def set_revision_history(self, rev_history):
2217
"""See Branch.set_revision_history."""
2218
if 'evil' in debug.debug_flags:
2219
mutter_callsite(3, "set_revision_history scales with history.")
2220
check_not_reserved_id = _mod_revision.check_not_reserved_id
2221
for rev_id in rev_history:
2222
check_not_reserved_id(rev_id)
2223
if Branch.hooks['post_change_branch_tip']:
2224
# Don't calculate the last_revision_info() if there are no hooks
2226
old_revno, old_revid = self.last_revision_info()
2227
if len(rev_history) == 0:
2228
revid = _mod_revision.NULL_REVISION
2230
revid = rev_history[-1]
2231
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2232
self._write_revision_history(rev_history)
2233
self._clear_cached_state()
2234
self._cache_revision_history(rev_history)
2235
for hook in Branch.hooks['set_rh']:
2236
hook(self, rev_history)
2237
if Branch.hooks['post_change_branch_tip']:
2238
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2240
def _synchronize_history(self, destination, revision_id):
2241
"""Synchronize last revision and revision history between branches.
2243
This version is most efficient when the destination is also a
2244
BzrBranch5, but works for BzrBranch6 as long as the revision
2245
history is the true lefthand parent history, and all of the revisions
2246
are in the destination's repository. If not, set_revision_history
2249
:param destination: The branch to copy the history into
2250
:param revision_id: The revision-id to truncate history at. May
2251
be None to copy complete history.
2253
if not isinstance(destination._format, BzrBranchFormat5):
2254
super(BzrBranch, self)._synchronize_history(
2255
destination, revision_id)
2257
if revision_id == _mod_revision.NULL_REVISION:
2260
new_history = self.revision_history()
2261
if revision_id is not None and new_history != []:
2263
new_history = new_history[:new_history.index(revision_id) + 1]
2265
rev = self.repository.get_revision(revision_id)
2266
new_history = rev.get_history(self.repository)[1:]
2267
destination.set_revision_history(new_history)
2270
def set_last_revision_info(self, revno, revision_id):
2271
"""Set the last revision of this branch.
2273
The caller is responsible for checking that the revno is correct
2274
for this revision id.
2276
It may be possible to set the branch last revision to an id not
2277
present in the repository. However, branches can also be
2278
configured to check constraints on history, in which case this may not
2281
revision_id = _mod_revision.ensure_null(revision_id)
2282
# this old format stores the full history, but this api doesn't
2283
# provide it, so we must generate, and might as well check it's
2285
history = self._lefthand_history(revision_id)
2286
if len(history) != revno:
2287
raise AssertionError('%d != %d' % (len(history), revno))
2288
self.set_revision_history(history)
2290
def _gen_revision_history(self):
2291
history = self._transport.get_bytes('revision-history').split('\n')
2292
if history[-1:] == ['']:
2293
# There shouldn't be a trailing newline, but just in case.
2298
def generate_revision_history(self, revision_id, last_rev=None,
2300
"""Create a new revision history that will finish with revision_id.
2302
:param revision_id: the new tip to use.
2303
:param last_rev: The previous last_revision. If not None, then this
2304
must be a ancestory of revision_id, or DivergedBranches is raised.
2305
:param other_branch: The other branch that DivergedBranches should
2306
raise with respect to.
2308
self.set_revision_history(self._lefthand_history(revision_id,
2309
last_rev, other_branch))
2311
def basis_tree(self):
2312
"""See Branch.basis_tree."""
2313
return self.repository.revision_tree(self.last_revision())
2315
def _get_parent_location(self):
2316
_locs = ['parent', 'pull', 'x-pull']
2319
return self._transport.get_bytes(l).strip('\n')
2320
except errors.NoSuchFile:
2324
def _basic_push(self, target, overwrite, stop_revision):
2325
"""Basic implementation of push without bound branches or hooks.
2327
Must be called with source read locked and target write locked.
2329
result = BranchPushResult()
2330
result.source_branch = self
2331
result.target_branch = target
2332
result.old_revno, result.old_revid = target.last_revision_info()
2333
self.update_references(target)
2334
if result.old_revid != self.last_revision():
2335
# We assume that during 'push' this repository is closer than
2337
graph = self.repository.get_graph(target.repository)
2338
target.update_revisions(self, stop_revision,
2339
overwrite=overwrite, graph=graph)
2340
if self._push_should_merge_tags():
2341
result.tag_conflicts = self.tags.merge_to(target.tags,
2343
result.new_revno, result.new_revid = target.last_revision_info()
2346
def get_stacked_on_url(self):
2347
raise errors.UnstackableBranchFormat(self._format, self.base)
2349
def set_push_location(self, location):
2350
"""See Branch.set_push_location."""
2351
self.get_config().set_user_option(
2352
'push_location', location,
2353
store=_mod_config.STORE_LOCATION_NORECURSE)
2355
def _set_parent_location(self, url):
2357
self._transport.delete('parent')
2359
self._transport.put_bytes('parent', url + '\n',
2360
mode=self.bzrdir._get_file_mode())
2363
class BzrBranch5(BzrBranch):
2364
"""A format 5 branch. This supports new features over plain branches.
2366
It has support for a master_branch which is the data for bound branches.
2369
def get_bound_location(self):
2371
return self._transport.get_bytes('bound')[:-1]
2372
except errors.NoSuchFile:
2376
def get_master_branch(self, possible_transports=None):
2377
"""Return the branch we are bound to.
2379
:return: Either a Branch, or None
2381
This could memoise the branch, but if thats done
2382
it must be revalidated on each new lock.
2383
So for now we just don't memoise it.
2384
# RBC 20060304 review this decision.
2386
bound_loc = self.get_bound_location()
2390
return Branch.open(bound_loc,
2391
possible_transports=possible_transports)
2392
except (errors.NotBranchError, errors.ConnectionError), e:
2393
raise errors.BoundBranchConnectionFailure(
2397
def set_bound_location(self, location):
2398
"""Set the target where this branch is bound to.
2400
:param location: URL to the target branch
2403
self._transport.put_bytes('bound', location+'\n',
2404
mode=self.bzrdir._get_file_mode())
2407
self._transport.delete('bound')
2408
except errors.NoSuchFile:
2413
def bind(self, other):
2414
"""Bind this branch to the branch other.
2416
This does not push or pull data between the branches, though it does
2417
check for divergence to raise an error when the branches are not
2418
either the same, or one a prefix of the other. That behaviour may not
2419
be useful, so that check may be removed in future.
2421
:param other: The branch to bind to
2424
# TODO: jam 20051230 Consider checking if the target is bound
2425
# It is debatable whether you should be able to bind to
2426
# a branch which is itself bound.
2427
# Committing is obviously forbidden,
2428
# but binding itself may not be.
2429
# Since we *have* to check at commit time, we don't
2430
# *need* to check here
2432
# we want to raise diverged if:
2433
# last_rev is not in the other_last_rev history, AND
2434
# other_last_rev is not in our history, and do it without pulling
2436
self.set_bound_location(other.base)
2440
"""If bound, unbind"""
2441
return self.set_bound_location(None)
2444
def update(self, possible_transports=None):
2445
"""Synchronise this branch with the master branch if any.
2447
:return: None or the last_revision that was pivoted out during the
2450
master = self.get_master_branch(possible_transports)
2451
if master is not None:
2452
old_tip = _mod_revision.ensure_null(self.last_revision())
2453
self.pull(master, overwrite=True)
2454
if self.repository.get_graph().is_ancestor(old_tip,
2455
_mod_revision.ensure_null(self.last_revision())):
2461
class BzrBranch8(BzrBranch5):
2462
"""A branch that stores tree-reference locations."""
2464
def _open_hook(self):
2465
if self._ignore_fallbacks:
2468
url = self.get_stacked_on_url()
2469
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2470
errors.UnstackableBranchFormat):
2473
for hook in Branch.hooks['transform_fallback_location']:
2474
url = hook(self, url)
2476
hook_name = Branch.hooks.get_hook_name(hook)
2477
raise AssertionError(
2478
"'transform_fallback_location' hook %s returned "
2479
"None, not a URL." % hook_name)
2480
self._activate_fallback_location(url)
2482
def __init__(self, *args, **kwargs):
2483
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2484
super(BzrBranch8, self).__init__(*args, **kwargs)
2485
self._last_revision_info_cache = None
2486
self._reference_info = None
2488
def _clear_cached_state(self):
2489
super(BzrBranch8, self)._clear_cached_state()
2490
self._last_revision_info_cache = None
2491
self._reference_info = None
2493
def _last_revision_info(self):
2494
revision_string = self._transport.get_bytes('last-revision')
2495
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2496
revision_id = cache_utf8.get_cached_utf8(revision_id)
2498
return revno, revision_id
2500
def _write_last_revision_info(self, revno, revision_id):
2501
"""Simply write out the revision id, with no checks.
2503
Use set_last_revision_info to perform this safely.
2505
Does not update the revision_history cache.
2506
Intended to be called by set_last_revision_info and
2507
_write_revision_history.
2509
revision_id = _mod_revision.ensure_null(revision_id)
2510
out_string = '%d %s\n' % (revno, revision_id)
2511
self._transport.put_bytes('last-revision', out_string,
2512
mode=self.bzrdir._get_file_mode())
2515
def set_last_revision_info(self, revno, revision_id):
2516
revision_id = _mod_revision.ensure_null(revision_id)
2517
old_revno, old_revid = self.last_revision_info()
2518
if self._get_append_revisions_only():
2519
self._check_history_violation(revision_id)
2520
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2521
self._write_last_revision_info(revno, revision_id)
2522
self._clear_cached_state()
2523
self._last_revision_info_cache = revno, revision_id
2524
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2526
def _synchronize_history(self, destination, revision_id):
2527
"""Synchronize last revision and revision history between branches.
2529
:see: Branch._synchronize_history
2531
# XXX: The base Branch has a fast implementation of this method based
2532
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2533
# that uses set_revision_history. This class inherits from BzrBranch5,
2534
# but wants the fast implementation, so it calls
2535
# Branch._synchronize_history directly.
2536
Branch._synchronize_history(self, destination, revision_id)
2538
def _check_history_violation(self, revision_id):
2539
last_revision = _mod_revision.ensure_null(self.last_revision())
2540
if _mod_revision.is_null(last_revision):
2542
if last_revision not in self._lefthand_history(revision_id):
2543
raise errors.AppendRevisionsOnlyViolation(self.base)
2545
def _gen_revision_history(self):
2546
"""Generate the revision history from last revision
2548
last_revno, last_revision = self.last_revision_info()
2549
self._extend_partial_history(stop_index=last_revno-1)
2550
return list(reversed(self._partial_revision_history_cache))
2552
def _write_revision_history(self, history):
2553
"""Factored out of set_revision_history.
2555
This performs the actual writing to disk, with format-specific checks.
2556
It is intended to be called by BzrBranch5.set_revision_history.
2558
if len(history) == 0:
2559
last_revision = 'null:'
2561
if history != self._lefthand_history(history[-1]):
2562
raise errors.NotLefthandHistory(history)
2563
last_revision = history[-1]
2564
if self._get_append_revisions_only():
2565
self._check_history_violation(last_revision)
2566
self._write_last_revision_info(len(history), last_revision)
2569
def _set_parent_location(self, url):
2570
"""Set the parent branch"""
2571
self._set_config_location('parent_location', url, make_relative=True)
2574
def _get_parent_location(self):
2575
"""Set the parent branch"""
2576
return self._get_config_location('parent_location')
2579
def _set_all_reference_info(self, info_dict):
2580
"""Replace all reference info stored in a branch.
2582
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2585
writer = rio.RioWriter(s)
2586
for key, (tree_path, branch_location) in info_dict.iteritems():
2587
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2588
branch_location=branch_location)
2589
writer.write_stanza(stanza)
2590
self._transport.put_bytes('references', s.getvalue())
2591
self._reference_info = info_dict
2594
def _get_all_reference_info(self):
2595
"""Return all the reference info stored in a branch.
2597
:return: A dict of {file_id: (tree_path, branch_location)}
2599
if self._reference_info is not None:
2600
return self._reference_info
2601
rio_file = self._transport.get('references')
2603
stanzas = rio.read_stanzas(rio_file)
2604
info_dict = dict((s['file_id'], (s['tree_path'],
2605
s['branch_location'])) for s in stanzas)
2608
self._reference_info = info_dict
2611
def set_reference_info(self, file_id, tree_path, branch_location):
2612
"""Set the branch location to use for a tree reference.
2614
:param file_id: The file-id of the tree reference.
2615
:param tree_path: The path of the tree reference in the tree.
2616
:param branch_location: The location of the branch to retrieve tree
2619
info_dict = self._get_all_reference_info()
2620
info_dict[file_id] = (tree_path, branch_location)
2621
if None in (tree_path, branch_location):
2622
if tree_path is not None:
2623
raise ValueError('tree_path must be None when branch_location'
2625
if branch_location is not None:
2626
raise ValueError('branch_location must be None when tree_path'
2628
del info_dict[file_id]
2629
self._set_all_reference_info(info_dict)
2631
def get_reference_info(self, file_id):
2632
"""Get the tree_path and branch_location for a tree reference.
2634
:return: a tuple of (tree_path, branch_location)
2636
return self._get_all_reference_info().get(file_id, (None, None))
2638
def reference_parent(self, file_id, path, possible_transports=None):
2639
"""Return the parent branch for a tree-reference file_id.
2641
:param file_id: The file_id of the tree reference
2642
:param path: The path of the file_id in the tree
2643
:return: A branch associated with the file_id
2645
branch_location = self.get_reference_info(file_id)[1]
2646
if branch_location is None:
2647
return Branch.reference_parent(self, file_id, path,
2648
possible_transports)
2649
branch_location = urlutils.join(self.base, branch_location)
2650
return Branch.open(branch_location,
2651
possible_transports=possible_transports)
2653
def set_push_location(self, location):
2654
"""See Branch.set_push_location."""
2655
self._set_config_location('push_location', location)
2657
def set_bound_location(self, location):
2658
"""See Branch.set_push_location."""
2660
config = self.get_config()
2661
if location is None:
2662
if config.get_user_option('bound') != 'True':
2665
config.set_user_option('bound', 'False', warn_masked=True)
2668
self._set_config_location('bound_location', location,
2670
config.set_user_option('bound', 'True', warn_masked=True)
2673
def _get_bound_location(self, bound):
2674
"""Return the bound location in the config file.
2676
Return None if the bound parameter does not match"""
2677
config = self.get_config()
2678
config_bound = (config.get_user_option('bound') == 'True')
2679
if config_bound != bound:
2681
return self._get_config_location('bound_location', config=config)
2683
def get_bound_location(self):
2684
"""See Branch.set_push_location."""
2685
return self._get_bound_location(True)
2687
def get_old_bound_location(self):
2688
"""See Branch.get_old_bound_location"""
2689
return self._get_bound_location(False)
2691
def get_stacked_on_url(self):
2692
# you can always ask for the URL; but you might not be able to use it
2693
# if the repo can't support stacking.
2694
## self._check_stackable_repo()
2695
stacked_url = self._get_config_location('stacked_on_location')
2696
if stacked_url is None:
2697
raise errors.NotStacked(self)
2700
def _get_append_revisions_only(self):
2701
value = self.get_config().get_user_option('append_revisions_only')
2702
return value == 'True'
2705
def generate_revision_history(self, revision_id, last_rev=None,
2707
"""See BzrBranch5.generate_revision_history"""
2708
history = self._lefthand_history(revision_id, last_rev, other_branch)
2709
revno = len(history)
2710
self.set_last_revision_info(revno, revision_id)
2713
def get_rev_id(self, revno, history=None):
2714
"""Find the revision id of the specified revno."""
2716
return _mod_revision.NULL_REVISION
2718
last_revno, last_revision_id = self.last_revision_info()
2719
if revno <= 0 or revno > last_revno:
2720
raise errors.NoSuchRevision(self, revno)
2722
if history is not None:
2723
return history[revno - 1]
2725
index = last_revno - revno
2726
if len(self._partial_revision_history_cache) <= index:
2727
self._extend_partial_history(stop_index=index)
2728
if len(self._partial_revision_history_cache) > index:
2729
return self._partial_revision_history_cache[index]
2731
raise errors.NoSuchRevision(self, revno)
2734
def revision_id_to_revno(self, revision_id):
2735
"""Given a revision id, return its revno"""
2736
if _mod_revision.is_null(revision_id):
2739
index = self._partial_revision_history_cache.index(revision_id)
2741
self._extend_partial_history(stop_revision=revision_id)
2742
index = len(self._partial_revision_history_cache) - 1
2743
if self._partial_revision_history_cache[index] != revision_id:
2744
raise errors.NoSuchRevision(self, revision_id)
2745
return self.revno() - index
2748
class BzrBranch7(BzrBranch8):
2749
"""A branch with support for a fallback repository."""
2751
def set_reference_info(self, file_id, tree_path, branch_location):
2752
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2754
def get_reference_info(self, file_id):
2755
Branch.get_reference_info(self, file_id)
2757
def reference_parent(self, file_id, path, possible_transports=None):
2758
return Branch.reference_parent(self, file_id, path,
2759
possible_transports)
2762
class BzrBranch6(BzrBranch7):
2763
"""See BzrBranchFormat6 for the capabilities of this branch.
2765
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2769
def get_stacked_on_url(self):
2770
raise errors.UnstackableBranchFormat(self._format, self.base)
2773
######################################################################
2774
# results of operations
2777
class _Result(object):
2779
def _show_tag_conficts(self, to_file):
2780
if not getattr(self, 'tag_conflicts', None):
2782
to_file.write('Conflicting tags:\n')
2783
for name, value1, value2 in self.tag_conflicts:
2784
to_file.write(' %s\n' % (name, ))
2787
class PullResult(_Result):
2788
"""Result of a Branch.pull operation.
2790
:ivar old_revno: Revision number before pull.
2791
:ivar new_revno: Revision number after pull.
2792
:ivar old_revid: Tip revision id before pull.
2793
:ivar new_revid: Tip revision id after pull.
2794
:ivar source_branch: Source (local) branch object. (read locked)
2795
:ivar master_branch: Master branch of the target, or the target if no
2797
:ivar local_branch: target branch if there is a Master, else None
2798
:ivar target_branch: Target/destination branch object. (write locked)
2799
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2803
# DEPRECATED: pull used to return the change in revno
2804
return self.new_revno - self.old_revno
2806
def report(self, to_file):
2808
if self.old_revid == self.new_revid:
2809
to_file.write('No revisions to pull.\n')
2811
to_file.write('Now on revision %d.\n' % self.new_revno)
2812
self._show_tag_conficts(to_file)
2815
class BranchPushResult(_Result):
2816
"""Result of a Branch.push operation.
2818
:ivar old_revno: Revision number (eg 10) of the target before push.
2819
:ivar new_revno: Revision number (eg 12) of the target after push.
2820
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2822
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2824
:ivar source_branch: Source branch object that the push was from. This is
2825
read locked, and generally is a local (and thus low latency) branch.
2826
:ivar master_branch: If target is a bound branch, the master branch of
2827
target, or target itself. Always write locked.
2828
:ivar target_branch: The direct Branch where data is being sent (write
2830
:ivar local_branch: If the target is a bound branch this will be the
2831
target, otherwise it will be None.
2835
# DEPRECATED: push used to return the change in revno
2836
return self.new_revno - self.old_revno
2838
def report(self, to_file):
2839
"""Write a human-readable description of the result."""
2840
if self.old_revid == self.new_revid:
2841
note('No new revisions to push.')
2843
note('Pushed up to revision %d.' % self.new_revno)
2844
self._show_tag_conficts(to_file)
2847
class BranchCheckResult(object):
2848
"""Results of checking branch consistency.
2853
def __init__(self, branch):
2854
self.branch = branch
2857
def report_results(self, verbose):
2858
"""Report the check results via trace.note.
2860
:param verbose: Requests more detailed display of what was checked,
2863
note('checked branch %s format %s', self.branch.base,
2864
self.branch._format)
2865
for error in self.errors:
2866
note('found error:%s', error)
2869
class Converter5to6(object):
2870
"""Perform an in-place upgrade of format 5 to format 6"""
2872
def convert(self, branch):
2873
# Data for 5 and 6 can peacefully coexist.
2874
format = BzrBranchFormat6()
2875
new_branch = format.open(branch.bzrdir, _found=True)
2877
# Copy source data into target
2878
new_branch._write_last_revision_info(*branch.last_revision_info())
2879
new_branch.set_parent(branch.get_parent())
2880
new_branch.set_bound_location(branch.get_bound_location())
2881
new_branch.set_push_location(branch.get_push_location())
2883
# New branch has no tags by default
2884
new_branch.tags._set_tag_dict({})
2886
# Copying done; now update target format
2887
new_branch._transport.put_bytes('format',
2888
format.get_format_string(),
2889
mode=new_branch.bzrdir._get_file_mode())
2891
# Clean up old files
2892
new_branch._transport.delete('revision-history')
2894
branch.set_parent(None)
2895
except errors.NoSuchFile:
2897
branch.set_bound_location(None)
2900
class Converter6to7(object):
2901
"""Perform an in-place upgrade of format 6 to format 7"""
2903
def convert(self, branch):
2904
format = BzrBranchFormat7()
2905
branch._set_config_location('stacked_on_location', '')
2906
# update target format
2907
branch._transport.put_bytes('format', format.get_format_string())
2910
class Converter7to8(object):
2911
"""Perform an in-place upgrade of format 6 to format 7"""
2913
def convert(self, branch):
2914
format = BzrBranchFormat8()
2915
branch._transport.put_bytes('references', '')
2916
# update target format
2917
branch._transport.put_bytes('format', format.get_format_string())
2920
def _run_with_write_locked_target(target, callable, *args, **kwargs):
2921
"""Run ``callable(*args, **kwargs)``, write-locking target for the
2924
_run_with_write_locked_target will attempt to release the lock it acquires.
2926
If an exception is raised by callable, then that exception *will* be
2927
propagated, even if the unlock attempt raises its own error. Thus
2928
_run_with_write_locked_target should be preferred to simply doing::
2932
return callable(*args, **kwargs)
2937
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
2938
# should share code?
2941
result = callable(*args, **kwargs)
2943
exc_info = sys.exc_info()
2947
raise exc_info[0], exc_info[1], exc_info[2]
2953
class InterBranch(InterObject):
2954
"""This class represents operations taking place between two branches.
2956
Its instances have methods like pull() and push() and contain
2957
references to the source and target repositories these operations
2958
can be carried out on.
2962
"""The available optimised InterBranch types."""
2965
def _get_branch_formats_to_test():
2966
"""Return a tuple with the Branch formats to use when testing."""
2967
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
2969
def pull(self, overwrite=False, stop_revision=None,
2970
possible_transports=None, local=False):
2971
"""Mirror source into target branch.
2973
The target branch is considered to be 'local', having low latency.
2975
:returns: PullResult instance
2977
raise NotImplementedError(self.pull)
2979
def update_revisions(self, stop_revision=None, overwrite=False,
2981
"""Pull in new perfect-fit revisions.
2983
:param stop_revision: Updated until the given revision
2984
:param overwrite: Always set the branch pointer, rather than checking
2985
to see if it is a proper descendant.
2986
:param graph: A Graph object that can be used to query history
2987
information. This can be None.
2990
raise NotImplementedError(self.update_revisions)
2992
def push(self, overwrite=False, stop_revision=None,
2993
_override_hook_source_branch=None):
2994
"""Mirror the source branch into the target branch.
2996
The source branch is considered to be 'local', having low latency.
2998
raise NotImplementedError(self.push)
3001
class GenericInterBranch(InterBranch):
3002
"""InterBranch implementation that uses public Branch functions.
3006
def _get_branch_formats_to_test():
3007
return BranchFormat._default_format, BranchFormat._default_format
3009
def update_revisions(self, stop_revision=None, overwrite=False,
3011
"""See InterBranch.update_revisions()."""
3012
self.source.lock_read()
3014
other_revno, other_last_revision = self.source.last_revision_info()
3015
stop_revno = None # unknown
3016
if stop_revision is None:
3017
stop_revision = other_last_revision
3018
if _mod_revision.is_null(stop_revision):
3019
# if there are no commits, we're done.
3021
stop_revno = other_revno
3023
# what's the current last revision, before we fetch [and change it
3025
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3026
# we fetch here so that we don't process data twice in the common
3027
# case of having something to pull, and so that the check for
3028
# already merged can operate on the just fetched graph, which will
3029
# be cached in memory.
3030
self.target.fetch(self.source, stop_revision)
3031
# Check to see if one is an ancestor of the other
3034
graph = self.target.repository.get_graph()
3035
if self.target._check_if_descendant_or_diverged(
3036
stop_revision, last_rev, graph, self.source):
3037
# stop_revision is a descendant of last_rev, but we aren't
3038
# overwriting, so we're done.
3040
if stop_revno is None:
3042
graph = self.target.repository.get_graph()
3043
this_revno, this_last_revision = \
3044
self.target.last_revision_info()
3045
stop_revno = graph.find_distance_to_null(stop_revision,
3046
[(other_last_revision, other_revno),
3047
(this_last_revision, this_revno)])
3048
self.target.set_last_revision_info(stop_revno, stop_revision)
3050
self.source.unlock()
3052
def pull(self, overwrite=False, stop_revision=None,
3053
possible_transports=None, _hook_master=None, run_hooks=True,
3054
_override_hook_target=None, local=False):
3057
:param _hook_master: Private parameter - set the branch to
3058
be supplied as the master to pull hooks.
3059
:param run_hooks: Private parameter - if false, this branch
3060
is being called because it's the master of the primary branch,
3061
so it should not run its hooks.
3062
:param _override_hook_target: Private parameter - set the branch to be
3063
supplied as the target_branch to pull hooks.
3064
:param local: Only update the local branch, and not the bound branch.
3066
# This type of branch can't be bound.
3068
raise errors.LocalRequiresBoundBranch()
3069
result = PullResult()
3070
result.source_branch = self.source
3071
if _override_hook_target is None:
3072
result.target_branch = self.target
3074
result.target_branch = _override_hook_target
3075
self.source.lock_read()
3077
# We assume that during 'pull' the target repository is closer than
3079
self.source.update_references(self.target)
3080
graph = self.target.repository.get_graph(self.source.repository)
3081
# TODO: Branch formats should have a flag that indicates
3082
# that revno's are expensive, and pull() should honor that flag.
3084
result.old_revno, result.old_revid = \
3085
self.target.last_revision_info()
3086
self.target.update_revisions(self.source, stop_revision,
3087
overwrite=overwrite, graph=graph)
3088
# TODO: The old revid should be specified when merging tags,
3089
# so a tags implementation that versions tags can only
3090
# pull in the most recent changes. -- JRV20090506
3091
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3093
result.new_revno, result.new_revid = self.target.last_revision_info()
3095
result.master_branch = _hook_master
3096
result.local_branch = result.target_branch
3098
result.master_branch = result.target_branch
3099
result.local_branch = None
3101
for hook in Branch.hooks['post_pull']:
3104
self.source.unlock()
3107
def push(self, overwrite=False, stop_revision=None,
3108
_override_hook_source_branch=None):
3109
"""See InterBranch.push.
3111
This is the basic concrete implementation of push()
3113
:param _override_hook_source_branch: If specified, run
3114
the hooks passing this Branch as the source, rather than self.
3115
This is for use of RemoteBranch, where push is delegated to the
3116
underlying vfs-based Branch.
3118
# TODO: Public option to disable running hooks - should be trivial but
3120
self.source.lock_read()
3122
return _run_with_write_locked_target(
3123
self.target, self._push_with_bound_branches, overwrite,
3125
_override_hook_source_branch=_override_hook_source_branch)
3127
self.source.unlock()
3129
def _push_with_bound_branches(self, overwrite, stop_revision,
3130
_override_hook_source_branch=None):
3131
"""Push from source into target, and into target's master if any.
3134
if _override_hook_source_branch:
3135
result.source_branch = _override_hook_source_branch
3136
for hook in Branch.hooks['post_push']:
3139
bound_location = self.target.get_bound_location()
3140
if bound_location and self.target.base != bound_location:
3141
# there is a master branch.
3143
# XXX: Why the second check? Is it even supported for a branch to
3144
# be bound to itself? -- mbp 20070507
3145
master_branch = self.target.get_master_branch()
3146
master_branch.lock_write()
3148
# push into the master from the source branch.
3149
self.source._basic_push(master_branch, overwrite, stop_revision)
3150
# and push into the target branch from the source. Note that we
3151
# push from the source branch again, because its considered the
3152
# highest bandwidth repository.
3153
result = self.source._basic_push(self.target, overwrite,
3155
result.master_branch = master_branch
3156
result.local_branch = self.target
3160
master_branch.unlock()
3163
result = self.source._basic_push(self.target, overwrite,
3165
# TODO: Why set master_branch and local_branch if there's no
3166
# binding? Maybe cleaner to just leave them unset? -- mbp
3168
result.master_branch = self.target
3169
result.local_branch = None
3174
def is_compatible(self, source, target):
3175
# GenericBranch uses the public API, so always compatible
3179
class InterToBranch5(GenericInterBranch):
3182
def _get_branch_formats_to_test():
3183
return BranchFormat._default_format, BzrBranchFormat5()
3185
def pull(self, overwrite=False, stop_revision=None,
3186
possible_transports=None, run_hooks=True,
3187
_override_hook_target=None, local=False):
3188
"""Pull from source into self, updating my master if any.
3190
:param run_hooks: Private parameter - if false, this branch
3191
is being called because it's the master of the primary branch,
3192
so it should not run its hooks.
3194
bound_location = self.target.get_bound_location()
3195
if local and not bound_location:
3196
raise errors.LocalRequiresBoundBranch()
3197
master_branch = None
3198
if not local and bound_location and self.source.base != bound_location:
3199
# not pulling from master, so we need to update master.
3200
master_branch = self.target.get_master_branch(possible_transports)
3201
master_branch.lock_write()
3204
# pull from source into master.
3205
master_branch.pull(self.source, overwrite, stop_revision,
3207
return super(InterToBranch5, self).pull(overwrite,
3208
stop_revision, _hook_master=master_branch,
3209
run_hooks=run_hooks,
3210
_override_hook_target=_override_hook_target)
3213
master_branch.unlock()
3216
InterBranch.register_optimiser(GenericInterBranch)
3217
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
