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# Copyright (C) 2005, 2006, 2007, 2008, 2009 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
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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 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 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)
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def open_from_transport(transport, _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(_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_bzrdir = bzrdir.BzrDir.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_bzrdir.open_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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graph = self.repository.get_graph()
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parent_map = dict(((key, value) for key, value in
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graph.iter_ancestry([last_revision]) if value is not None))
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revision_graph = repository._strip_NULL_ghosts(parent_map)
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revs = tsort.merge_sort(revision_graph, last_revision, None,
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# Drop the sequence # before caching
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self._merge_sorted_revisions_cache = [r[1:] for r in revs]
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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 rev_id, depth, revno, end_of_merge in rev_iter:
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if rev_id != start_revision_id:
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# The decision to include the start or not
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# depends on the stop_rule if a stop is provided
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iter([(rev_id, depth, revno, end_of_merge)]),
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if stop_revision_id is None:
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for rev_id, depth, revno, end_of_merge in rev_iter:
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yield rev_id, depth, revno, end_of_merge
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elif stop_rule == 'exclude':
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for rev_id, depth, revno, end_of_merge in rev_iter:
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if rev_id == stop_revision_id:
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yield rev_id, depth, revno, end_of_merge
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elif stop_rule == 'include':
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for rev_id, depth, revno, end_of_merge in rev_iter:
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yield rev_id, depth, revno, end_of_merge
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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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for rev_id, depth, revno, end_of_merge in rev_iter:
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if rev_id == left_parent:
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yield rev_id, depth, revno, end_of_merge
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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():
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raise errors.UnstackableBranchFormat(self._format, self.base)
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# XXX: Changing from one fallback repository to another does not check
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# 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,
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errors.UnstackableRepositoryFormat):
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self._activate_fallback_location(url)
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# write this out after the repository is stacked to avoid setting a
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# stacked config that doesn't work.
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self._set_config_location('stacked_on_location', url)
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"""Change a branch to be unstacked, copying data as needed.
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Don't call this directly, use set_stacked_on_url(None).
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pb = ui.ui_factory.nested_progress_bar()
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pb.update("Unstacking")
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# The basic approach here is to fetch the tip of the branch,
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# including all available ghosts, from the existing stacked
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# repository into a new repository object without the fallbacks.
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# XXX: See <https://launchpad.net/bugs/397286> - this may not be
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# correct for CHKMap repostiories
697
old_repository = self.repository
698
if len(old_repository._fallback_repositories) != 1:
699
raise AssertionError("can't cope with fallback repositories "
700
"of %r" % (self.repository,))
701
# unlock it, including unlocking the fallback
702
old_repository.unlock()
703
old_repository.lock_read()
705
# Repositories don't offer an interface to remove fallback
706
# repositories today; take the conceptually simpler option and just
707
# reopen it. We reopen it starting from the URL so that we
708
# get a separate connection for RemoteRepositories and can
709
# stream from one of them to the other. This does mean doing
710
# separate SSH connection setup, but unstacking is not a
711
# common operation so it's tolerable.
712
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
713
new_repository = new_bzrdir.find_repository()
714
self.repository = new_repository
715
if self.repository._fallback_repositories:
716
raise AssertionError("didn't expect %r to have "
717
"fallback_repositories"
718
% (self.repository,))
719
# this is not paired with an unlock because it's just restoring
720
# the previous state; the lock's released when set_stacked_on_url
722
self.repository.lock_write()
723
# XXX: If you unstack a branch while it has a working tree
724
# with a pending merge, the pending-merged revisions will no
725
# longer be present. You can (probably) revert and remerge.
727
# XXX: This only fetches up to the tip of the repository; it
728
# doesn't bring across any tags. That's fairly consistent
729
# with how branch works, but perhaps not ideal.
730
self.repository.fetch(old_repository,
731
revision_id=self.last_revision(),
734
old_repository.unlock()
738
def _set_tags_bytes(self, bytes):
739
"""Mirror method for _get_tags_bytes.
741
:seealso: Branch._get_tags_bytes.
743
return _run_with_write_locked_target(self, self._transport.put_bytes,
746
def _cache_revision_history(self, rev_history):
747
"""Set the cached revision history to rev_history.
749
The revision_history method will use this cache to avoid regenerating
750
the revision history.
752
This API is semi-public; it only for use by subclasses, all other code
753
should consider it to be private.
755
self._revision_history_cache = rev_history
757
def _cache_revision_id_to_revno(self, revision_id_to_revno):
758
"""Set the cached revision_id => revno map to revision_id_to_revno.
760
This API is semi-public; it only for use by subclasses, all other code
761
should consider it to be private.
763
self._revision_id_to_revno_cache = revision_id_to_revno
765
def _clear_cached_state(self):
766
"""Clear any cached data on this branch, e.g. cached revision history.
768
This means the next call to revision_history will need to call
769
_gen_revision_history.
771
This API is semi-public; it only for use by subclasses, all other code
772
should consider it to be private.
774
self._revision_history_cache = None
775
self._revision_id_to_revno_cache = None
776
self._last_revision_info_cache = None
777
self._merge_sorted_revisions_cache = None
778
self._partial_revision_history_cache = []
779
self._partial_revision_id_to_revno_cache = {}
781
def _gen_revision_history(self):
782
"""Return sequence of revision hashes on to this branch.
784
Unlike revision_history, this method always regenerates or rereads the
785
revision history, i.e. it does not cache the result, so repeated calls
788
Concrete subclasses should override this instead of revision_history so
789
that subclasses do not need to deal with caching logic.
791
This API is semi-public; it only for use by subclasses, all other code
792
should consider it to be private.
794
raise NotImplementedError(self._gen_revision_history)
797
def revision_history(self):
798
"""Return sequence of revision ids on this branch.
800
This method will cache the revision history for as long as it is safe to
803
if 'evil' in debug.debug_flags:
804
mutter_callsite(3, "revision_history scales with history.")
805
if self._revision_history_cache is not None:
806
history = self._revision_history_cache
808
history = self._gen_revision_history()
809
self._cache_revision_history(history)
813
"""Return current revision number for this branch.
815
That is equivalent to the number of revisions committed to
818
return self.last_revision_info()[0]
821
"""Older format branches cannot bind or unbind."""
822
raise errors.UpgradeRequired(self.base)
824
def last_revision(self):
825
"""Return last revision id, or NULL_REVISION."""
826
return self.last_revision_info()[1]
829
def last_revision_info(self):
830
"""Return information about the last revision.
832
:return: A tuple (revno, revision_id).
834
if self._last_revision_info_cache is None:
835
self._last_revision_info_cache = self._last_revision_info()
836
return self._last_revision_info_cache
838
def _last_revision_info(self):
839
rh = self.revision_history()
842
return (revno, rh[-1])
844
return (0, _mod_revision.NULL_REVISION)
846
@deprecated_method(deprecated_in((1, 6, 0)))
847
def missing_revisions(self, other, stop_revision=None):
848
"""Return a list of new revisions that would perfectly fit.
850
If self and other have not diverged, return a list of the revisions
851
present in other, but missing from self.
853
self_history = self.revision_history()
854
self_len = len(self_history)
855
other_history = other.revision_history()
856
other_len = len(other_history)
857
common_index = min(self_len, other_len) -1
858
if common_index >= 0 and \
859
self_history[common_index] != other_history[common_index]:
860
raise errors.DivergedBranches(self, other)
862
if stop_revision is None:
863
stop_revision = other_len
865
if stop_revision > other_len:
866
raise errors.NoSuchRevision(self, stop_revision)
867
return other_history[self_len:stop_revision]
870
def update_revisions(self, other, stop_revision=None, overwrite=False,
872
"""Pull in new perfect-fit revisions.
874
:param other: Another Branch to pull from
875
:param stop_revision: Updated until the given revision
876
:param overwrite: Always set the branch pointer, rather than checking
877
to see if it is a proper descendant.
878
:param graph: A Graph object that can be used to query history
879
information. This can be None.
882
return InterBranch.get(other, self).update_revisions(stop_revision,
885
def import_last_revision_info(self, source_repo, revno, revid):
886
"""Set the last revision info, importing from another repo if necessary.
888
This is used by the bound branch code to upload a revision to
889
the master branch first before updating the tip of the local branch.
891
:param source_repo: Source repository to optionally fetch from
892
:param revno: Revision number of the new tip
893
:param revid: Revision id of the new tip
895
if not self.repository.has_same_location(source_repo):
896
self.repository.fetch(source_repo, revision_id=revid)
897
self.set_last_revision_info(revno, revid)
899
def revision_id_to_revno(self, revision_id):
900
"""Given a revision id, return its revno"""
901
if _mod_revision.is_null(revision_id):
903
history = self.revision_history()
905
return history.index(revision_id) + 1
907
raise errors.NoSuchRevision(self, revision_id)
910
def get_rev_id(self, revno, history=None):
911
"""Find the revision id of the specified revno."""
913
return _mod_revision.NULL_REVISION
914
last_revno, last_revid = self.last_revision_info()
915
if revno == last_revno:
917
if revno <= 0 or revno > last_revno:
918
raise errors.NoSuchRevision(self, revno)
919
distance_from_last = last_revno - revno
920
if len(self._partial_revision_history_cache) <= distance_from_last:
921
self._extend_partial_history(distance_from_last)
922
return self._partial_revision_history_cache[distance_from_last]
925
def pull(self, source, overwrite=False, stop_revision=None,
926
possible_transports=None, *args, **kwargs):
927
"""Mirror source into this branch.
929
This branch is considered to be 'local', having low latency.
931
:returns: PullResult instance
933
return InterBranch.get(source, self).pull(overwrite=overwrite,
934
stop_revision=stop_revision,
935
possible_transports=possible_transports, *args, **kwargs)
937
def push(self, target, overwrite=False, stop_revision=None, *args,
939
"""Mirror this branch into target.
941
This branch is considered to be 'local', having low latency.
943
return InterBranch.get(self, target).push(overwrite, stop_revision,
946
def lossy_push(self, target, stop_revision=None):
947
"""Push deltas into another branch.
949
:note: This does not, like push, retain the revision ids from
950
the source branch and will, rather than adding bzr-specific
951
metadata, push only those semantics of the revision that can be
952
natively represented by this branch' VCS.
954
:param target: Target branch
955
:param stop_revision: Revision to push, defaults to last revision.
956
:return: BranchPushResult with an extra member revidmap:
957
A dictionary mapping revision ids from the target branch
958
to new revision ids in the target branch, for each
959
revision that was pushed.
961
inter = InterBranch.get(self, target)
962
lossy_push = getattr(inter, "lossy_push", None)
963
if lossy_push is None:
964
raise errors.LossyPushToSameVCS(self, target)
965
return lossy_push(stop_revision)
967
def basis_tree(self):
968
"""Return `Tree` object for last revision."""
969
return self.repository.revision_tree(self.last_revision())
971
def get_parent(self):
972
"""Return the parent location of the branch.
974
This is the default location for pull/missing. The usual
975
pattern is that the user can override it by specifying a
978
parent = self._get_parent_location()
981
# This is an old-format absolute path to a local branch
983
if parent.startswith('/'):
984
parent = urlutils.local_path_to_url(parent.decode('utf8'))
986
return urlutils.join(self.base[:-1], parent)
987
except errors.InvalidURLJoin, e:
988
raise errors.InaccessibleParent(parent, self.base)
990
def _get_parent_location(self):
991
raise NotImplementedError(self._get_parent_location)
993
def _set_config_location(self, name, url, config=None,
994
make_relative=False):
996
config = self.get_config()
1000
url = urlutils.relative_url(self.base, url)
1001
config.set_user_option(name, url, warn_masked=True)
1003
def _get_config_location(self, name, config=None):
1005
config = self.get_config()
1006
location = config.get_user_option(name)
1011
def get_child_submit_format(self):
1012
"""Return the preferred format of submissions to this branch."""
1013
return self.get_config().get_user_option("child_submit_format")
1015
def get_submit_branch(self):
1016
"""Return the submit location of the branch.
1018
This is the default location for bundle. The usual
1019
pattern is that the user can override it by specifying a
1022
return self.get_config().get_user_option('submit_branch')
1024
def set_submit_branch(self, location):
1025
"""Return the submit location of the branch.
1027
This is the default location for bundle. The usual
1028
pattern is that the user can override it by specifying a
1031
self.get_config().set_user_option('submit_branch', location,
1034
def get_public_branch(self):
1035
"""Return the public location of the branch.
1037
This is used by merge directives.
1039
return self._get_config_location('public_branch')
1041
def set_public_branch(self, location):
1042
"""Return the submit location of the branch.
1044
This is the default location for bundle. The usual
1045
pattern is that the user can override it by specifying a
1048
self._set_config_location('public_branch', location)
1050
def get_push_location(self):
1051
"""Return the None or the location to push this branch to."""
1052
push_loc = self.get_config().get_user_option('push_location')
1055
def set_push_location(self, location):
1056
"""Set a new push location for this branch."""
1057
raise NotImplementedError(self.set_push_location)
1059
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1060
"""Run the post_change_branch_tip hooks."""
1061
hooks = Branch.hooks['post_change_branch_tip']
1064
new_revno, new_revid = self.last_revision_info()
1065
params = ChangeBranchTipParams(
1066
self, old_revno, new_revno, old_revid, new_revid)
1070
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1071
"""Run the pre_change_branch_tip hooks."""
1072
hooks = Branch.hooks['pre_change_branch_tip']
1075
old_revno, old_revid = self.last_revision_info()
1076
params = ChangeBranchTipParams(
1077
self, old_revno, new_revno, old_revid, new_revid)
1081
except errors.TipChangeRejected:
1084
exc_info = sys.exc_info()
1085
hook_name = Branch.hooks.get_hook_name(hook)
1086
raise errors.HookFailed(
1087
'pre_change_branch_tip', hook_name, exc_info)
1091
"""Synchronise this branch with the master branch if any.
1093
:return: None or the last_revision pivoted out during the update.
1097
def check_revno(self, revno):
1099
Check whether a revno corresponds to any revision.
1100
Zero (the NULL revision) is considered valid.
1103
self.check_real_revno(revno)
1105
def check_real_revno(self, revno):
1107
Check whether a revno corresponds to a real revision.
1108
Zero (the NULL revision) is considered invalid
1110
if revno < 1 or revno > self.revno():
1111
raise errors.InvalidRevisionNumber(revno)
1114
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
1115
"""Clone this branch into to_bzrdir preserving all semantic values.
1117
Most API users will want 'create_clone_on_transport', which creates a
1118
new bzrdir and branch on the fly.
1120
revision_id: if not None, the revision history in the new branch will
1121
be truncated to end with revision_id.
1123
result = to_bzrdir.create_branch()
1126
if repository_policy is not None:
1127
repository_policy.configure_branch(result)
1128
self.copy_content_into(result, revision_id=revision_id)
1134
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
1135
"""Create a new line of development from the branch, into to_bzrdir.
1137
to_bzrdir controls the branch format.
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)
1148
result.set_parent(self.bzrdir.root_transport.base)
1153
def _synchronize_history(self, destination, revision_id):
1154
"""Synchronize last revision and revision history between branches.
1156
This version is most efficient when the destination is also a
1157
BzrBranch6, but works for BzrBranch5, as long as the destination's
1158
repository contains all the lefthand ancestors of the intended
1159
last_revision. If not, set_last_revision_info will fail.
1161
:param destination: The branch to copy the history into
1162
:param revision_id: The revision-id to truncate history at. May
1163
be None to copy complete history.
1165
source_revno, source_revision_id = self.last_revision_info()
1166
if revision_id is None:
1167
revno, revision_id = source_revno, source_revision_id
1169
graph = self.repository.get_graph()
1171
revno = graph.find_distance_to_null(revision_id,
1172
[(source_revision_id, source_revno)])
1173
except errors.GhostRevisionsHaveNoRevno:
1174
# Default to 1, if we can't find anything else
1176
destination.set_last_revision_info(revno, revision_id)
1179
def copy_content_into(self, destination, revision_id=None):
1180
"""Copy the content of self into destination.
1182
revision_id: if not None, the revision history in the new branch will
1183
be truncated to end with revision_id.
1185
self.update_references(destination)
1186
self._synchronize_history(destination, revision_id)
1188
parent = self.get_parent()
1189
except errors.InaccessibleParent, e:
1190
mutter('parent was not accessible to copy: %s', e)
1193
destination.set_parent(parent)
1194
if self._push_should_merge_tags():
1195
self.tags.merge_to(destination.tags)
1197
def update_references(self, target):
1198
if not getattr(self._format, 'supports_reference_locations', False):
1200
reference_dict = self._get_all_reference_info()
1201
if len(reference_dict) == 0:
1203
old_base = self.base
1204
new_base = target.base
1205
target_reference_dict = target._get_all_reference_info()
1206
for file_id, (tree_path, branch_location) in (
1207
reference_dict.items()):
1208
branch_location = urlutils.rebase_url(branch_location,
1210
target_reference_dict.setdefault(
1211
file_id, (tree_path, branch_location))
1212
target._set_all_reference_info(target_reference_dict)
1216
"""Check consistency of the branch.
1218
In particular this checks that revisions given in the revision-history
1219
do actually match up in the revision graph, and that they're all
1220
present in the repository.
1222
Callers will typically also want to check the repository.
1224
:return: A BranchCheckResult.
1226
ret = BranchCheckResult(self)
1227
mainline_parent_id = None
1228
last_revno, last_revision_id = self.last_revision_info()
1229
real_rev_history = []
1231
for revid in self.repository.iter_reverse_revision_history(
1233
real_rev_history.append(revid)
1234
except errors.RevisionNotPresent:
1235
ret.ghosts_in_mainline = True
1237
ret.ghosts_in_mainline = False
1238
real_rev_history.reverse()
1239
if len(real_rev_history) != last_revno:
1240
raise errors.BzrCheckError('revno does not match len(mainline)'
1241
' %s != %s' % (last_revno, len(real_rev_history)))
1242
# TODO: We should probably also check that real_rev_history actually
1243
# matches self.revision_history()
1244
for revision_id in real_rev_history:
1246
revision = self.repository.get_revision(revision_id)
1247
except errors.NoSuchRevision, e:
1248
raise errors.BzrCheckError("mainline revision {%s} not in repository"
1250
# In general the first entry on the revision history has no parents.
1251
# But it's not illegal for it to have parents listed; this can happen
1252
# in imports from Arch when the parents weren't reachable.
1253
if mainline_parent_id is not None:
1254
if mainline_parent_id not in revision.parent_ids:
1255
raise errors.BzrCheckError("previous revision {%s} not listed among "
1257
% (mainline_parent_id, revision_id))
1258
mainline_parent_id = revision_id
1261
def _get_checkout_format(self):
1262
"""Return the most suitable metadir for a checkout of this branch.
1263
Weaves are used if this branch's repository uses weaves.
1265
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1266
from bzrlib.repofmt import weaverepo
1267
format = bzrdir.BzrDirMetaFormat1()
1268
format.repository_format = weaverepo.RepositoryFormat7()
1270
format = self.repository.bzrdir.checkout_metadir()
1271
format.set_branch_format(self._format)
1274
def create_clone_on_transport(self, to_transport, revision_id=None,
1275
stacked_on=None, create_prefix=False, use_existing_dir=False):
1276
"""Create a clone of this branch and its bzrdir.
1278
:param to_transport: The transport to clone onto.
1279
:param revision_id: The revision id to use as tip in the new branch.
1280
If None the tip is obtained from this branch.
1281
:param stacked_on: An optional URL to stack the clone on.
1282
:param create_prefix: Create any missing directories leading up to
1284
:param use_existing_dir: Use an existing directory if one exists.
1286
# XXX: Fix the bzrdir API to allow getting the branch back from the
1287
# clone call. Or something. 20090224 RBC/spiv.
1288
if revision_id is None:
1289
revision_id = self.last_revision()
1291
dir_to = self.bzrdir.clone_on_transport(to_transport,
1292
revision_id=revision_id, stacked_on=stacked_on,
1293
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1294
except errors.FileExists:
1295
if not use_existing_dir:
1297
except errors.NoSuchFile:
1298
if not create_prefix:
1300
return dir_to.open_branch()
1302
def create_checkout(self, to_location, revision_id=None,
1303
lightweight=False, accelerator_tree=None,
1305
"""Create a checkout of a branch.
1307
:param to_location: The url to produce the checkout at
1308
:param revision_id: The revision to check out
1309
:param lightweight: If True, produce a lightweight checkout, otherwise,
1310
produce a bound branch (heavyweight checkout)
1311
:param accelerator_tree: A tree which can be used for retrieving file
1312
contents more quickly than the revision tree, i.e. a workingtree.
1313
The revision tree will be used for cases where accelerator_tree's
1314
content is different.
1315
:param hardlink: If true, hard-link files from accelerator_tree,
1317
:return: The tree of the created checkout
1319
t = transport.get_transport(to_location)
1322
format = self._get_checkout_format()
1323
checkout = format.initialize_on_transport(t)
1324
from_branch = BranchReferenceFormat().initialize(checkout, self)
1326
format = self._get_checkout_format()
1327
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1328
to_location, force_new_tree=False, format=format)
1329
checkout = checkout_branch.bzrdir
1330
checkout_branch.bind(self)
1331
# pull up to the specified revision_id to set the initial
1332
# branch tip correctly, and seed it with history.
1333
checkout_branch.pull(self, stop_revision=revision_id)
1335
tree = checkout.create_workingtree(revision_id,
1336
from_branch=from_branch,
1337
accelerator_tree=accelerator_tree,
1339
basis_tree = tree.basis_tree()
1340
basis_tree.lock_read()
1342
for path, file_id in basis_tree.iter_references():
1343
reference_parent = self.reference_parent(file_id, path)
1344
reference_parent.create_checkout(tree.abspath(path),
1345
basis_tree.get_reference_revision(file_id, path),
1352
def reconcile(self, thorough=True):
1353
"""Make sure the data stored in this branch is consistent."""
1354
from bzrlib.reconcile import BranchReconciler
1355
reconciler = BranchReconciler(self, thorough=thorough)
1356
reconciler.reconcile()
1359
def reference_parent(self, file_id, path, possible_transports=None):
1360
"""Return the parent branch for a tree-reference file_id
1361
:param file_id: The file_id of the tree reference
1362
:param path: The path of the file_id in the tree
1363
:return: A branch associated with the file_id
1365
# FIXME should provide multiple branches, based on config
1366
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1367
possible_transports=possible_transports)
1369
def supports_tags(self):
1370
return self._format.supports_tags()
1372
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1374
"""Ensure that revision_b is a descendant of revision_a.
1376
This is a helper function for update_revisions.
1378
:raises: DivergedBranches if revision_b has diverged from revision_a.
1379
:returns: True if revision_b is a descendant of revision_a.
1381
relation = self._revision_relations(revision_a, revision_b, graph)
1382
if relation == 'b_descends_from_a':
1384
elif relation == 'diverged':
1385
raise errors.DivergedBranches(self, other_branch)
1386
elif relation == 'a_descends_from_b':
1389
raise AssertionError("invalid relation: %r" % (relation,))
1391
def _revision_relations(self, revision_a, revision_b, graph):
1392
"""Determine the relationship between two revisions.
1394
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1396
heads = graph.heads([revision_a, revision_b])
1397
if heads == set([revision_b]):
1398
return 'b_descends_from_a'
1399
elif heads == set([revision_a, revision_b]):
1400
# These branches have diverged
1402
elif heads == set([revision_a]):
1403
return 'a_descends_from_b'
1405
raise AssertionError("invalid heads: %r" % (heads,))
1408
class BranchFormat(object):
1409
"""An encapsulation of the initialization and open routines for a format.
1411
Formats provide three things:
1412
* An initialization routine,
1416
Formats are placed in an dict by their format string for reference
1417
during branch opening. Its not required that these be instances, they
1418
can be classes themselves with class methods - it simply depends on
1419
whether state is needed for a given format or not.
1421
Once a format is deprecated, just deprecate the initialize and open
1422
methods on the format class. Do not deprecate the object, as the
1423
object will be created every time regardless.
1426
_default_format = None
1427
"""The default format used for new branches."""
1430
"""The known formats."""
1432
can_set_append_revisions_only = True
1434
def __eq__(self, other):
1435
return self.__class__ is other.__class__
1437
def __ne__(self, other):
1438
return not (self == other)
1441
def find_format(klass, a_bzrdir):
1442
"""Return the format for the branch object in a_bzrdir."""
1444
transport = a_bzrdir.get_branch_transport(None)
1445
format_string = transport.get("format").read()
1446
return klass._formats[format_string]
1447
except errors.NoSuchFile:
1448
raise errors.NotBranchError(path=transport.base)
1450
raise errors.UnknownFormatError(format=format_string, kind='branch')
1453
def get_default_format(klass):
1454
"""Return the current default format."""
1455
return klass._default_format
1457
def get_reference(self, a_bzrdir):
1458
"""Get the target reference of the branch in a_bzrdir.
1460
format probing must have been completed before calling
1461
this method - it is assumed that the format of the branch
1462
in a_bzrdir is correct.
1464
:param a_bzrdir: The bzrdir to get the branch data from.
1465
:return: None if the branch is not a reference branch.
1470
def set_reference(self, a_bzrdir, to_branch):
1471
"""Set the target reference of the branch in a_bzrdir.
1473
format probing must have been completed before calling
1474
this method - it is assumed that the format of the branch
1475
in a_bzrdir is correct.
1477
:param a_bzrdir: The bzrdir to set the branch reference for.
1478
:param to_branch: branch that the checkout is to reference
1480
raise NotImplementedError(self.set_reference)
1482
def get_format_string(self):
1483
"""Return the ASCII format string that identifies this format."""
1484
raise NotImplementedError(self.get_format_string)
1486
def get_format_description(self):
1487
"""Return the short format description for this format."""
1488
raise NotImplementedError(self.get_format_description)
1490
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
1492
"""Initialize a branch in a bzrdir, with specified files
1494
:param a_bzrdir: The bzrdir to initialize the branch in
1495
:param utf8_files: The files to create as a list of
1496
(filename, content) tuples
1497
:param set_format: If True, set the format with
1498
self.get_format_string. (BzrBranch4 has its format set
1500
:return: a branch in this format
1502
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
1503
branch_transport = a_bzrdir.get_branch_transport(self)
1505
'metadir': ('lock', lockdir.LockDir),
1506
'branch4': ('branch-lock', lockable_files.TransportLock),
1508
lock_name, lock_class = lock_map[lock_type]
1509
control_files = lockable_files.LockableFiles(branch_transport,
1510
lock_name, lock_class)
1511
control_files.create_lock()
1513
control_files.lock_write()
1514
except errors.LockContention:
1515
if lock_type != 'branch4':
1521
utf8_files += [('format', self.get_format_string())]
1523
for (filename, content) in utf8_files:
1524
branch_transport.put_bytes(
1526
mode=a_bzrdir._get_file_mode())
1529
control_files.unlock()
1530
return self.open(a_bzrdir, _found=True)
1532
def initialize(self, a_bzrdir):
1533
"""Create a branch of this format in a_bzrdir."""
1534
raise NotImplementedError(self.initialize)
1536
def is_supported(self):
1537
"""Is this format supported?
1539
Supported formats can be initialized and opened.
1540
Unsupported formats may not support initialization or committing or
1541
some other features depending on the reason for not being supported.
1545
def make_tags(self, branch):
1546
"""Create a tags object for branch.
1548
This method is on BranchFormat, because BranchFormats are reflected
1549
over the wire via network_name(), whereas full Branch instances require
1550
multiple VFS method calls to operate at all.
1552
The default implementation returns a disabled-tags instance.
1554
Note that it is normal for branch to be a RemoteBranch when using tags
1557
return DisabledTags(branch)
1559
def network_name(self):
1560
"""A simple byte string uniquely identifying this format for RPC calls.
1562
MetaDir branch formats use their disk format string to identify the
1563
repository over the wire. All in one formats such as bzr < 0.8, and
1564
foreign formats like svn/git and hg should use some marker which is
1565
unique and immutable.
1567
raise NotImplementedError(self.network_name)
1569
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
1570
"""Return the branch object for a_bzrdir
1572
:param a_bzrdir: A BzrDir that contains a branch.
1573
:param _found: a private parameter, do not use it. It is used to
1574
indicate if format probing has already be done.
1575
:param ignore_fallbacks: when set, no fallback branches will be opened
1576
(if there are any). Default is to open fallbacks.
1578
raise NotImplementedError(self.open)
1581
def register_format(klass, format):
1582
"""Register a metadir format."""
1583
klass._formats[format.get_format_string()] = format
1584
# Metadir formats have a network name of their format string, and get
1585
# registered as class factories.
1586
network_format_registry.register(format.get_format_string(), format.__class__)
1589
def set_default_format(klass, format):
1590
klass._default_format = format
1592
def supports_set_append_revisions_only(self):
1593
"""True if this format supports set_append_revisions_only."""
1596
def supports_stacking(self):
1597
"""True if this format records a stacked-on branch."""
1601
def unregister_format(klass, format):
1602
del klass._formats[format.get_format_string()]
1605
return self.get_format_description().rstrip()
1607
def supports_tags(self):
1608
"""True if this format supports tags stored in the branch"""
1609
return False # by default
1612
class BranchHooks(Hooks):
1613
"""A dictionary mapping hook name to a list of callables for branch hooks.
1615
e.g. ['set_rh'] Is the list of items to be called when the
1616
set_revision_history function is invoked.
1620
"""Create the default hooks.
1622
These are all empty initially, because by default nothing should get
1625
Hooks.__init__(self)
1626
self.create_hook(HookPoint('set_rh',
1627
"Invoked whenever the revision history has been set via "
1628
"set_revision_history. The api signature is (branch, "
1629
"revision_history), and the branch will be write-locked. "
1630
"The set_rh hook can be expensive for bzr to trigger, a better "
1631
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1632
self.create_hook(HookPoint('open',
1633
"Called with the Branch object that has been opened after a "
1634
"branch is opened.", (1, 8), None))
1635
self.create_hook(HookPoint('post_push',
1636
"Called after a push operation completes. post_push is called "
1637
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1638
"bzr client.", (0, 15), None))
1639
self.create_hook(HookPoint('post_pull',
1640
"Called after a pull operation completes. post_pull is called "
1641
"with a bzrlib.branch.PullResult object and only runs in the "
1642
"bzr client.", (0, 15), None))
1643
self.create_hook(HookPoint('pre_commit',
1644
"Called after a commit is calculated but before it is is "
1645
"completed. pre_commit is called with (local, master, old_revno, "
1646
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1647
"). old_revid is NULL_REVISION for the first commit to a branch, "
1648
"tree_delta is a TreeDelta object describing changes from the "
1649
"basis revision. hooks MUST NOT modify this delta. "
1650
" future_tree is an in-memory tree obtained from "
1651
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1652
"tree.", (0,91), None))
1653
self.create_hook(HookPoint('post_commit',
1654
"Called in the bzr client after a commit has completed. "
1655
"post_commit is called with (local, master, old_revno, old_revid, "
1656
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1657
"commit to a branch.", (0, 15), None))
1658
self.create_hook(HookPoint('post_uncommit',
1659
"Called in the bzr client after an uncommit completes. "
1660
"post_uncommit is called with (local, master, old_revno, "
1661
"old_revid, new_revno, new_revid) where local is the local branch "
1662
"or None, master is the target branch, and an empty branch "
1663
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1664
self.create_hook(HookPoint('pre_change_branch_tip',
1665
"Called in bzr client and server before a change to the tip of a "
1666
"branch is made. pre_change_branch_tip is called with a "
1667
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1668
"commit, uncommit will all trigger this hook.", (1, 6), None))
1669
self.create_hook(HookPoint('post_change_branch_tip',
1670
"Called in bzr client and server after a change to the tip of a "
1671
"branch is made. post_change_branch_tip is called with a "
1672
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1673
"commit, uncommit will all trigger this hook.", (1, 4), None))
1674
self.create_hook(HookPoint('transform_fallback_location',
1675
"Called when a stacked branch is activating its fallback "
1676
"locations. transform_fallback_location is called with (branch, "
1677
"url), and should return a new url. Returning the same url "
1678
"allows it to be used as-is, returning a different one can be "
1679
"used to cause the branch to stack on a closer copy of that "
1680
"fallback_location. Note that the branch cannot have history "
1681
"accessing methods called on it during this hook because the "
1682
"fallback locations have not been activated. When there are "
1683
"multiple hooks installed for transform_fallback_location, "
1684
"all are called with the url returned from the previous hook."
1685
"The order is however undefined.", (1, 9), None))
1688
# install the default hooks into the Branch class.
1689
Branch.hooks = BranchHooks()
1692
class ChangeBranchTipParams(object):
1693
"""Object holding parameters passed to *_change_branch_tip hooks.
1695
There are 5 fields that hooks may wish to access:
1697
:ivar branch: the branch being changed
1698
:ivar old_revno: revision number before the change
1699
:ivar new_revno: revision number after the change
1700
:ivar old_revid: revision id before the change
1701
:ivar new_revid: revision id after the change
1703
The revid fields are strings. The revno fields are integers.
1706
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1707
"""Create a group of ChangeBranchTip parameters.
1709
:param branch: The branch being changed.
1710
:param old_revno: Revision number before the change.
1711
:param new_revno: Revision number after the change.
1712
:param old_revid: Tip revision id before the change.
1713
:param new_revid: Tip revision id after the change.
1715
self.branch = branch
1716
self.old_revno = old_revno
1717
self.new_revno = new_revno
1718
self.old_revid = old_revid
1719
self.new_revid = new_revid
1721
def __eq__(self, other):
1722
return self.__dict__ == other.__dict__
1725
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1726
self.__class__.__name__, self.branch,
1727
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1730
class BzrBranchFormat4(BranchFormat):
1731
"""Bzr branch format 4.
1734
- a revision-history file.
1735
- a branch-lock lock file [ to be shared with the bzrdir ]
1738
def get_format_description(self):
1739
"""See BranchFormat.get_format_description()."""
1740
return "Branch format 4"
1742
def initialize(self, a_bzrdir):
1743
"""Create a branch of this format in a_bzrdir."""
1744
utf8_files = [('revision-history', ''),
1745
('branch-name', ''),
1747
return self._initialize_helper(a_bzrdir, utf8_files,
1748
lock_type='branch4', set_format=False)
1751
super(BzrBranchFormat4, self).__init__()
1752
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1754
def network_name(self):
1755
"""The network name for this format is the control dirs disk label."""
1756
return self._matchingbzrdir.get_format_string()
1758
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
1759
"""See BranchFormat.open()."""
1761
# we are being called directly and must probe.
1762
raise NotImplementedError
1763
return BzrBranch(_format=self,
1764
_control_files=a_bzrdir._control_files,
1766
_repository=a_bzrdir.open_repository())
1769
return "Bazaar-NG branch format 4"
1772
class BranchFormatMetadir(BranchFormat):
1773
"""Common logic for meta-dir based branch formats."""
1775
def _branch_class(self):
1776
"""What class to instantiate on open calls."""
1777
raise NotImplementedError(self._branch_class)
1779
def network_name(self):
1780
"""A simple byte string uniquely identifying this format for RPC calls.
1782
Metadir branch formats use their format string.
1784
return self.get_format_string()
1786
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
1787
"""See BranchFormat.open()."""
1789
format = BranchFormat.find_format(a_bzrdir)
1790
if format.__class__ != self.__class__:
1791
raise AssertionError("wrong format %r found for %r" %
1794
transport = a_bzrdir.get_branch_transport(None)
1795
control_files = lockable_files.LockableFiles(transport, 'lock',
1797
return self._branch_class()(_format=self,
1798
_control_files=control_files,
1800
_repository=a_bzrdir.find_repository(),
1801
ignore_fallbacks=ignore_fallbacks)
1802
except errors.NoSuchFile:
1803
raise errors.NotBranchError(path=transport.base)
1806
super(BranchFormatMetadir, self).__init__()
1807
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1808
self._matchingbzrdir.set_branch_format(self)
1810
def supports_tags(self):
1814
class BzrBranchFormat5(BranchFormatMetadir):
1815
"""Bzr branch format 5.
1818
- a revision-history file.
1820
- a lock dir guarding the branch itself
1821
- all of this stored in a branch/ subdirectory
1822
- works with shared repositories.
1824
This format is new in bzr 0.8.
1827
def _branch_class(self):
1830
def get_format_string(self):
1831
"""See BranchFormat.get_format_string()."""
1832
return "Bazaar-NG branch format 5\n"
1834
def get_format_description(self):
1835
"""See BranchFormat.get_format_description()."""
1836
return "Branch format 5"
1838
def initialize(self, a_bzrdir):
1839
"""Create a branch of this format in a_bzrdir."""
1840
utf8_files = [('revision-history', ''),
1841
('branch-name', ''),
1843
return self._initialize_helper(a_bzrdir, utf8_files)
1845
def supports_tags(self):
1849
class BzrBranchFormat6(BranchFormatMetadir):
1850
"""Branch format with last-revision and tags.
1852
Unlike previous formats, this has no explicit revision history. Instead,
1853
this just stores the last-revision, and the left-hand history leading
1854
up to there is the history.
1856
This format was introduced in bzr 0.15
1857
and became the default in 0.91.
1860
def _branch_class(self):
1863
def get_format_string(self):
1864
"""See BranchFormat.get_format_string()."""
1865
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1867
def get_format_description(self):
1868
"""See BranchFormat.get_format_description()."""
1869
return "Branch format 6"
1871
def initialize(self, a_bzrdir):
1872
"""Create a branch of this format in a_bzrdir."""
1873
utf8_files = [('last-revision', '0 null:\n'),
1874
('branch.conf', ''),
1877
return self._initialize_helper(a_bzrdir, utf8_files)
1879
def make_tags(self, branch):
1880
"""See bzrlib.branch.BranchFormat.make_tags()."""
1881
return BasicTags(branch)
1883
def supports_set_append_revisions_only(self):
1887
class BzrBranchFormat8(BranchFormatMetadir):
1888
"""Metadir format supporting storing locations of subtree branches."""
1890
def _branch_class(self):
1893
def get_format_string(self):
1894
"""See BranchFormat.get_format_string()."""
1895
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1897
def get_format_description(self):
1898
"""See BranchFormat.get_format_description()."""
1899
return "Branch format 8"
1901
def initialize(self, a_bzrdir):
1902
"""Create a branch of this format in a_bzrdir."""
1903
utf8_files = [('last-revision', '0 null:\n'),
1904
('branch.conf', ''),
1908
return self._initialize_helper(a_bzrdir, utf8_files)
1911
super(BzrBranchFormat8, self).__init__()
1912
self._matchingbzrdir.repository_format = \
1913
RepositoryFormatKnitPack5RichRoot()
1915
def make_tags(self, branch):
1916
"""See bzrlib.branch.BranchFormat.make_tags()."""
1917
return BasicTags(branch)
1919
def supports_set_append_revisions_only(self):
1922
def supports_stacking(self):
1925
supports_reference_locations = True
1928
class BzrBranchFormat7(BzrBranchFormat8):
1929
"""Branch format with last-revision, tags, and a stacked location pointer.
1931
The stacked location pointer is passed down to the repository and requires
1932
a repository format with supports_external_lookups = True.
1934
This format was introduced in bzr 1.6.
1937
def initialize(self, a_bzrdir):
1938
"""Create a branch of this format in a_bzrdir."""
1939
utf8_files = [('last-revision', '0 null:\n'),
1940
('branch.conf', ''),
1943
return self._initialize_helper(a_bzrdir, utf8_files)
1945
def _branch_class(self):
1948
def get_format_string(self):
1949
"""See BranchFormat.get_format_string()."""
1950
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
1952
def get_format_description(self):
1953
"""See BranchFormat.get_format_description()."""
1954
return "Branch format 7"
1956
def supports_set_append_revisions_only(self):
1959
supports_reference_locations = False
1962
class BranchReferenceFormat(BranchFormat):
1963
"""Bzr branch reference format.
1965
Branch references are used in implementing checkouts, they
1966
act as an alias to the real branch which is at some other url.
1973
def get_format_string(self):
1974
"""See BranchFormat.get_format_string()."""
1975
return "Bazaar-NG Branch Reference Format 1\n"
1977
def get_format_description(self):
1978
"""See BranchFormat.get_format_description()."""
1979
return "Checkout reference format 1"
1981
def get_reference(self, a_bzrdir):
1982
"""See BranchFormat.get_reference()."""
1983
transport = a_bzrdir.get_branch_transport(None)
1984
return transport.get('location').read()
1986
def set_reference(self, a_bzrdir, to_branch):
1987
"""See BranchFormat.set_reference()."""
1988
transport = a_bzrdir.get_branch_transport(None)
1989
location = transport.put_bytes('location', to_branch.base)
1991
def initialize(self, a_bzrdir, target_branch=None):
1992
"""Create a branch of this format in a_bzrdir."""
1993
if target_branch is None:
1994
# this format does not implement branch itself, thus the implicit
1995
# creation contract must see it as uninitializable
1996
raise errors.UninitializableFormat(self)
1997
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1998
branch_transport = a_bzrdir.get_branch_transport(self)
1999
branch_transport.put_bytes('location',
2000
target_branch.bzrdir.root_transport.base)
2001
branch_transport.put_bytes('format', self.get_format_string())
2003
a_bzrdir, _found=True,
2004
possible_transports=[target_branch.bzrdir.root_transport])
2007
super(BranchReferenceFormat, self).__init__()
2008
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2009
self._matchingbzrdir.set_branch_format(self)
2011
def _make_reference_clone_function(format, a_branch):
2012
"""Create a clone() routine for a branch dynamically."""
2013
def clone(to_bzrdir, revision_id=None,
2014
repository_policy=None):
2015
"""See Branch.clone()."""
2016
return format.initialize(to_bzrdir, a_branch)
2017
# cannot obey revision_id limits when cloning a reference ...
2018
# FIXME RBC 20060210 either nuke revision_id for clone, or
2019
# emit some sort of warning/error to the caller ?!
2022
def open(self, a_bzrdir, _found=False, location=None,
2023
possible_transports=None, ignore_fallbacks=False):
2024
"""Return the branch that the branch reference in a_bzrdir points at.
2026
:param a_bzrdir: A BzrDir that contains a branch.
2027
:param _found: a private parameter, do not use it. It is used to
2028
indicate if format probing has already be done.
2029
:param ignore_fallbacks: when set, no fallback branches will be opened
2030
(if there are any). Default is to open fallbacks.
2031
:param location: The location of the referenced branch. If
2032
unspecified, this will be determined from the branch reference in
2034
:param possible_transports: An optional reusable transports list.
2037
format = BranchFormat.find_format(a_bzrdir)
2038
if format.__class__ != self.__class__:
2039
raise AssertionError("wrong format %r found for %r" %
2041
if location is None:
2042
location = self.get_reference(a_bzrdir)
2043
real_bzrdir = bzrdir.BzrDir.open(
2044
location, possible_transports=possible_transports)
2045
result = real_bzrdir.open_branch(ignore_fallbacks=ignore_fallbacks)
2046
# this changes the behaviour of result.clone to create a new reference
2047
# rather than a copy of the content of the branch.
2048
# I did not use a proxy object because that needs much more extensive
2049
# testing, and we are only changing one behaviour at the moment.
2050
# If we decide to alter more behaviours - i.e. the implicit nickname
2051
# then this should be refactored to introduce a tested proxy branch
2052
# and a subclass of that for use in overriding clone() and ....
2054
result.clone = self._make_reference_clone_function(result)
2058
network_format_registry = registry.FormatRegistry()
2059
"""Registry of formats indexed by their network name.
2061
The network name for a branch format is an identifier that can be used when
2062
referring to formats with smart server operations. See
2063
BranchFormat.network_name() for more detail.
2067
# formats which have no format string are not discoverable
2068
# and not independently creatable, so are not registered.
2069
__format5 = BzrBranchFormat5()
2070
__format6 = BzrBranchFormat6()
2071
__format7 = BzrBranchFormat7()
2072
__format8 = BzrBranchFormat8()
2073
BranchFormat.register_format(__format5)
2074
BranchFormat.register_format(BranchReferenceFormat())
2075
BranchFormat.register_format(__format6)
2076
BranchFormat.register_format(__format7)
2077
BranchFormat.register_format(__format8)
2078
BranchFormat.set_default_format(__format6)
2079
_legacy_formats = [BzrBranchFormat4(),
2081
network_format_registry.register(
2082
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2085
class BzrBranch(Branch):
2086
"""A branch stored in the actual filesystem.
2088
Note that it's "local" in the context of the filesystem; it doesn't
2089
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2090
it's writable, and can be accessed via the normal filesystem API.
2092
:ivar _transport: Transport for file operations on this branch's
2093
control files, typically pointing to the .bzr/branch directory.
2094
:ivar repository: Repository for this branch.
2095
:ivar base: The url of the base directory for this branch; the one
2096
containing the .bzr directory.
2099
def __init__(self, _format=None,
2100
_control_files=None, a_bzrdir=None, _repository=None,
2101
ignore_fallbacks=False):
2102
"""Create new branch object at a particular location."""
2103
if a_bzrdir is None:
2104
raise ValueError('a_bzrdir must be supplied')
2106
self.bzrdir = a_bzrdir
2107
self._base = self.bzrdir.transport.clone('..').base
2108
# XXX: We should be able to just do
2109
# self.base = self.bzrdir.root_transport.base
2110
# but this does not quite work yet -- mbp 20080522
2111
self._format = _format
2112
if _control_files is None:
2113
raise ValueError('BzrBranch _control_files is None')
2114
self.control_files = _control_files
2115
self._transport = _control_files._transport
2116
self.repository = _repository
2117
Branch.__init__(self)
2120
return '%s(%r)' % (self.__class__.__name__, self.base)
2124
def _get_base(self):
2125
"""Returns the directory containing the control directory."""
2128
base = property(_get_base, doc="The URL for the root of this branch.")
2130
def _get_config(self):
2131
return TransportConfig(self._transport, 'branch.conf')
2133
def is_locked(self):
2134
return self.control_files.is_locked()
2136
def lock_write(self, token=None):
2137
# All-in-one needs to always unlock/lock.
2138
repo_control = getattr(self.repository, 'control_files', None)
2139
if self.control_files == repo_control or not self.is_locked():
2140
self.repository.lock_write()
2145
return self.control_files.lock_write(token=token)
2148
self.repository.unlock()
2151
def lock_read(self):
2152
# All-in-one needs to always unlock/lock.
2153
repo_control = getattr(self.repository, 'control_files', None)
2154
if self.control_files == repo_control or not self.is_locked():
2155
self.repository.lock_read()
2160
self.control_files.lock_read()
2163
self.repository.unlock()
2168
self.control_files.unlock()
2170
# All-in-one needs to always unlock/lock.
2171
repo_control = getattr(self.repository, 'control_files', None)
2172
if (self.control_files == repo_control or
2173
not self.control_files.is_locked()):
2174
self.repository.unlock()
2175
if not self.control_files.is_locked():
2176
# we just released the lock
2177
self._clear_cached_state()
2179
def peek_lock_mode(self):
2180
if self.control_files._lock_count == 0:
2183
return self.control_files._lock_mode
2185
def get_physical_lock_status(self):
2186
return self.control_files.get_physical_lock_status()
2189
def print_file(self, file, revision_id):
2190
"""See Branch.print_file."""
2191
return self.repository.print_file(file, revision_id)
2193
def _write_revision_history(self, history):
2194
"""Factored out of set_revision_history.
2196
This performs the actual writing to disk.
2197
It is intended to be called by BzrBranch5.set_revision_history."""
2198
self._transport.put_bytes(
2199
'revision-history', '\n'.join(history),
2200
mode=self.bzrdir._get_file_mode())
2203
def set_revision_history(self, rev_history):
2204
"""See Branch.set_revision_history."""
2205
if 'evil' in debug.debug_flags:
2206
mutter_callsite(3, "set_revision_history scales with history.")
2207
check_not_reserved_id = _mod_revision.check_not_reserved_id
2208
for rev_id in rev_history:
2209
check_not_reserved_id(rev_id)
2210
if Branch.hooks['post_change_branch_tip']:
2211
# Don't calculate the last_revision_info() if there are no hooks
2213
old_revno, old_revid = self.last_revision_info()
2214
if len(rev_history) == 0:
2215
revid = _mod_revision.NULL_REVISION
2217
revid = rev_history[-1]
2218
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2219
self._write_revision_history(rev_history)
2220
self._clear_cached_state()
2221
self._cache_revision_history(rev_history)
2222
for hook in Branch.hooks['set_rh']:
2223
hook(self, rev_history)
2224
if Branch.hooks['post_change_branch_tip']:
2225
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2227
def _synchronize_history(self, destination, revision_id):
2228
"""Synchronize last revision and revision history between branches.
2230
This version is most efficient when the destination is also a
2231
BzrBranch5, but works for BzrBranch6 as long as the revision
2232
history is the true lefthand parent history, and all of the revisions
2233
are in the destination's repository. If not, set_revision_history
2236
:param destination: The branch to copy the history into
2237
:param revision_id: The revision-id to truncate history at. May
2238
be None to copy complete history.
2240
if not isinstance(destination._format, BzrBranchFormat5):
2241
super(BzrBranch, self)._synchronize_history(
2242
destination, revision_id)
2244
if revision_id == _mod_revision.NULL_REVISION:
2247
new_history = self.revision_history()
2248
if revision_id is not None and new_history != []:
2250
new_history = new_history[:new_history.index(revision_id) + 1]
2252
rev = self.repository.get_revision(revision_id)
2253
new_history = rev.get_history(self.repository)[1:]
2254
destination.set_revision_history(new_history)
2257
def set_last_revision_info(self, revno, revision_id):
2258
"""Set the last revision of this branch.
2260
The caller is responsible for checking that the revno is correct
2261
for this revision id.
2263
It may be possible to set the branch last revision to an id not
2264
present in the repository. However, branches can also be
2265
configured to check constraints on history, in which case this may not
2268
revision_id = _mod_revision.ensure_null(revision_id)
2269
# this old format stores the full history, but this api doesn't
2270
# provide it, so we must generate, and might as well check it's
2272
history = self._lefthand_history(revision_id)
2273
if len(history) != revno:
2274
raise AssertionError('%d != %d' % (len(history), revno))
2275
self.set_revision_history(history)
2277
def _gen_revision_history(self):
2278
history = self._transport.get_bytes('revision-history').split('\n')
2279
if history[-1:] == ['']:
2280
# There shouldn't be a trailing newline, but just in case.
2285
def generate_revision_history(self, revision_id, last_rev=None,
2287
"""Create a new revision history that will finish with revision_id.
2289
:param revision_id: the new tip to use.
2290
:param last_rev: The previous last_revision. If not None, then this
2291
must be a ancestory of revision_id, or DivergedBranches is raised.
2292
:param other_branch: The other branch that DivergedBranches should
2293
raise with respect to.
2295
self.set_revision_history(self._lefthand_history(revision_id,
2296
last_rev, other_branch))
2298
def basis_tree(self):
2299
"""See Branch.basis_tree."""
2300
return self.repository.revision_tree(self.last_revision())
2302
def _get_parent_location(self):
2303
_locs = ['parent', 'pull', 'x-pull']
2306
return self._transport.get_bytes(l).strip('\n')
2307
except errors.NoSuchFile:
2311
def _basic_push(self, target, overwrite, stop_revision):
2312
"""Basic implementation of push without bound branches or hooks.
2314
Must be called with source read locked and target write locked.
2316
result = BranchPushResult()
2317
result.source_branch = self
2318
result.target_branch = target
2319
result.old_revno, result.old_revid = target.last_revision_info()
2320
self.update_references(target)
2321
if result.old_revid != self.last_revision():
2322
# We assume that during 'push' this repository is closer than
2324
graph = self.repository.get_graph(target.repository)
2325
target.update_revisions(self, stop_revision,
2326
overwrite=overwrite, graph=graph)
2327
if self._push_should_merge_tags():
2328
result.tag_conflicts = self.tags.merge_to(target.tags,
2330
result.new_revno, result.new_revid = target.last_revision_info()
2333
def get_stacked_on_url(self):
2334
raise errors.UnstackableBranchFormat(self._format, self.base)
2336
def set_push_location(self, location):
2337
"""See Branch.set_push_location."""
2338
self.get_config().set_user_option(
2339
'push_location', location,
2340
store=_mod_config.STORE_LOCATION_NORECURSE)
2342
def _set_parent_location(self, url):
2344
self._transport.delete('parent')
2346
self._transport.put_bytes('parent', url + '\n',
2347
mode=self.bzrdir._get_file_mode())
2350
class BzrBranch5(BzrBranch):
2351
"""A format 5 branch. This supports new features over plain branches.
2353
It has support for a master_branch which is the data for bound branches.
2356
def get_bound_location(self):
2358
return self._transport.get_bytes('bound')[:-1]
2359
except errors.NoSuchFile:
2363
def get_master_branch(self, possible_transports=None):
2364
"""Return the branch we are bound to.
2366
:return: Either a Branch, or None
2368
This could memoise the branch, but if thats done
2369
it must be revalidated on each new lock.
2370
So for now we just don't memoise it.
2371
# RBC 20060304 review this decision.
2373
bound_loc = self.get_bound_location()
2377
return Branch.open(bound_loc,
2378
possible_transports=possible_transports)
2379
except (errors.NotBranchError, errors.ConnectionError), e:
2380
raise errors.BoundBranchConnectionFailure(
2384
def set_bound_location(self, location):
2385
"""Set the target where this branch is bound to.
2387
:param location: URL to the target branch
2390
self._transport.put_bytes('bound', location+'\n',
2391
mode=self.bzrdir._get_file_mode())
2394
self._transport.delete('bound')
2395
except errors.NoSuchFile:
2400
def bind(self, other):
2401
"""Bind this branch to the branch other.
2403
This does not push or pull data between the branches, though it does
2404
check for divergence to raise an error when the branches are not
2405
either the same, or one a prefix of the other. That behaviour may not
2406
be useful, so that check may be removed in future.
2408
:param other: The branch to bind to
2411
# TODO: jam 20051230 Consider checking if the target is bound
2412
# It is debatable whether you should be able to bind to
2413
# a branch which is itself bound.
2414
# Committing is obviously forbidden,
2415
# but binding itself may not be.
2416
# Since we *have* to check at commit time, we don't
2417
# *need* to check here
2419
# we want to raise diverged if:
2420
# last_rev is not in the other_last_rev history, AND
2421
# other_last_rev is not in our history, and do it without pulling
2423
self.set_bound_location(other.base)
2427
"""If bound, unbind"""
2428
return self.set_bound_location(None)
2431
def update(self, possible_transports=None):
2432
"""Synchronise this branch with the master branch if any.
2434
:return: None or the last_revision that was pivoted out during the
2437
master = self.get_master_branch(possible_transports)
2438
if master is not None:
2439
old_tip = _mod_revision.ensure_null(self.last_revision())
2440
self.pull(master, overwrite=True)
2441
if self.repository.get_graph().is_ancestor(old_tip,
2442
_mod_revision.ensure_null(self.last_revision())):
2448
class BzrBranch8(BzrBranch5):
2449
"""A branch that stores tree-reference locations."""
2451
def _open_hook(self):
2452
if self._ignore_fallbacks:
2455
url = self.get_stacked_on_url()
2456
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2457
errors.UnstackableBranchFormat):
2460
for hook in Branch.hooks['transform_fallback_location']:
2461
url = hook(self, url)
2463
hook_name = Branch.hooks.get_hook_name(hook)
2464
raise AssertionError(
2465
"'transform_fallback_location' hook %s returned "
2466
"None, not a URL." % hook_name)
2467
self._activate_fallback_location(url)
2469
def __init__(self, *args, **kwargs):
2470
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2471
super(BzrBranch8, self).__init__(*args, **kwargs)
2472
self._last_revision_info_cache = None
2473
self._reference_info = None
2475
def _clear_cached_state(self):
2476
super(BzrBranch8, self)._clear_cached_state()
2477
self._last_revision_info_cache = None
2478
self._reference_info = None
2480
def _last_revision_info(self):
2481
revision_string = self._transport.get_bytes('last-revision')
2482
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2483
revision_id = cache_utf8.get_cached_utf8(revision_id)
2485
return revno, revision_id
2487
def _write_last_revision_info(self, revno, revision_id):
2488
"""Simply write out the revision id, with no checks.
2490
Use set_last_revision_info to perform this safely.
2492
Does not update the revision_history cache.
2493
Intended to be called by set_last_revision_info and
2494
_write_revision_history.
2496
revision_id = _mod_revision.ensure_null(revision_id)
2497
out_string = '%d %s\n' % (revno, revision_id)
2498
self._transport.put_bytes('last-revision', out_string,
2499
mode=self.bzrdir._get_file_mode())
2502
def set_last_revision_info(self, revno, revision_id):
2503
revision_id = _mod_revision.ensure_null(revision_id)
2504
old_revno, old_revid = self.last_revision_info()
2505
if self._get_append_revisions_only():
2506
self._check_history_violation(revision_id)
2507
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2508
self._write_last_revision_info(revno, revision_id)
2509
self._clear_cached_state()
2510
self._last_revision_info_cache = revno, revision_id
2511
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2513
def _synchronize_history(self, destination, revision_id):
2514
"""Synchronize last revision and revision history between branches.
2516
:see: Branch._synchronize_history
2518
# XXX: The base Branch has a fast implementation of this method based
2519
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2520
# that uses set_revision_history. This class inherits from BzrBranch5,
2521
# but wants the fast implementation, so it calls
2522
# Branch._synchronize_history directly.
2523
Branch._synchronize_history(self, destination, revision_id)
2525
def _check_history_violation(self, revision_id):
2526
last_revision = _mod_revision.ensure_null(self.last_revision())
2527
if _mod_revision.is_null(last_revision):
2529
if last_revision not in self._lefthand_history(revision_id):
2530
raise errors.AppendRevisionsOnlyViolation(self.base)
2532
def _gen_revision_history(self):
2533
"""Generate the revision history from last revision
2535
last_revno, last_revision = self.last_revision_info()
2536
self._extend_partial_history(stop_index=last_revno-1)
2537
return list(reversed(self._partial_revision_history_cache))
2539
def _write_revision_history(self, history):
2540
"""Factored out of set_revision_history.
2542
This performs the actual writing to disk, with format-specific checks.
2543
It is intended to be called by BzrBranch5.set_revision_history.
2545
if len(history) == 0:
2546
last_revision = 'null:'
2548
if history != self._lefthand_history(history[-1]):
2549
raise errors.NotLefthandHistory(history)
2550
last_revision = history[-1]
2551
if self._get_append_revisions_only():
2552
self._check_history_violation(last_revision)
2553
self._write_last_revision_info(len(history), last_revision)
2556
def _set_parent_location(self, url):
2557
"""Set the parent branch"""
2558
self._set_config_location('parent_location', url, make_relative=True)
2561
def _get_parent_location(self):
2562
"""Set the parent branch"""
2563
return self._get_config_location('parent_location')
2566
def _set_all_reference_info(self, info_dict):
2567
"""Replace all reference info stored in a branch.
2569
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2572
writer = rio.RioWriter(s)
2573
for key, (tree_path, branch_location) in info_dict.iteritems():
2574
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2575
branch_location=branch_location)
2576
writer.write_stanza(stanza)
2577
self._transport.put_bytes('references', s.getvalue())
2578
self._reference_info = info_dict
2581
def _get_all_reference_info(self):
2582
"""Return all the reference info stored in a branch.
2584
:return: A dict of {file_id: (tree_path, branch_location)}
2586
if self._reference_info is not None:
2587
return self._reference_info
2588
rio_file = self._transport.get('references')
2590
stanzas = rio.read_stanzas(rio_file)
2591
info_dict = dict((s['file_id'], (s['tree_path'],
2592
s['branch_location'])) for s in stanzas)
2595
self._reference_info = info_dict
2598
def set_reference_info(self, file_id, tree_path, branch_location):
2599
"""Set the branch location to use for a tree reference.
2601
:param file_id: The file-id of the tree reference.
2602
:param tree_path: The path of the tree reference in the tree.
2603
:param branch_location: The location of the branch to retrieve tree
2606
info_dict = self._get_all_reference_info()
2607
info_dict[file_id] = (tree_path, branch_location)
2608
if None in (tree_path, branch_location):
2609
if tree_path is not None:
2610
raise ValueError('tree_path must be None when branch_location'
2612
if branch_location is not None:
2613
raise ValueError('branch_location must be None when tree_path'
2615
del info_dict[file_id]
2616
self._set_all_reference_info(info_dict)
2618
def get_reference_info(self, file_id):
2619
"""Get the tree_path and branch_location for a tree reference.
2621
:return: a tuple of (tree_path, branch_location)
2623
return self._get_all_reference_info().get(file_id, (None, None))
2625
def reference_parent(self, file_id, path, possible_transports=None):
2626
"""Return the parent branch for a tree-reference file_id.
2628
:param file_id: The file_id of the tree reference
2629
:param path: The path of the file_id in the tree
2630
:return: A branch associated with the file_id
2632
branch_location = self.get_reference_info(file_id)[1]
2633
if branch_location is None:
2634
return Branch.reference_parent(self, file_id, path,
2635
possible_transports)
2636
branch_location = urlutils.join(self.base, branch_location)
2637
return Branch.open(branch_location,
2638
possible_transports=possible_transports)
2640
def set_push_location(self, location):
2641
"""See Branch.set_push_location."""
2642
self._set_config_location('push_location', location)
2644
def set_bound_location(self, location):
2645
"""See Branch.set_push_location."""
2647
config = self.get_config()
2648
if location is None:
2649
if config.get_user_option('bound') != 'True':
2652
config.set_user_option('bound', 'False', warn_masked=True)
2655
self._set_config_location('bound_location', location,
2657
config.set_user_option('bound', 'True', warn_masked=True)
2660
def _get_bound_location(self, bound):
2661
"""Return the bound location in the config file.
2663
Return None if the bound parameter does not match"""
2664
config = self.get_config()
2665
config_bound = (config.get_user_option('bound') == 'True')
2666
if config_bound != bound:
2668
return self._get_config_location('bound_location', config=config)
2670
def get_bound_location(self):
2671
"""See Branch.set_push_location."""
2672
return self._get_bound_location(True)
2674
def get_old_bound_location(self):
2675
"""See Branch.get_old_bound_location"""
2676
return self._get_bound_location(False)
2678
def get_stacked_on_url(self):
2679
# you can always ask for the URL; but you might not be able to use it
2680
# if the repo can't support stacking.
2681
## self._check_stackable_repo()
2682
stacked_url = self._get_config_location('stacked_on_location')
2683
if stacked_url is None:
2684
raise errors.NotStacked(self)
2687
def _get_append_revisions_only(self):
2688
value = self.get_config().get_user_option('append_revisions_only')
2689
return value == 'True'
2692
def generate_revision_history(self, revision_id, last_rev=None,
2694
"""See BzrBranch5.generate_revision_history"""
2695
history = self._lefthand_history(revision_id, last_rev, other_branch)
2696
revno = len(history)
2697
self.set_last_revision_info(revno, revision_id)
2700
def get_rev_id(self, revno, history=None):
2701
"""Find the revision id of the specified revno."""
2703
return _mod_revision.NULL_REVISION
2705
last_revno, last_revision_id = self.last_revision_info()
2706
if revno <= 0 or revno > last_revno:
2707
raise errors.NoSuchRevision(self, revno)
2709
if history is not None:
2710
return history[revno - 1]
2712
index = last_revno - revno
2713
if len(self._partial_revision_history_cache) <= index:
2714
self._extend_partial_history(stop_index=index)
2715
if len(self._partial_revision_history_cache) > index:
2716
return self._partial_revision_history_cache[index]
2718
raise errors.NoSuchRevision(self, revno)
2721
def revision_id_to_revno(self, revision_id):
2722
"""Given a revision id, return its revno"""
2723
if _mod_revision.is_null(revision_id):
2726
index = self._partial_revision_history_cache.index(revision_id)
2728
self._extend_partial_history(stop_revision=revision_id)
2729
index = len(self._partial_revision_history_cache) - 1
2730
if self._partial_revision_history_cache[index] != revision_id:
2731
raise errors.NoSuchRevision(self, revision_id)
2732
return self.revno() - index
2735
class BzrBranch7(BzrBranch8):
2736
"""A branch with support for a fallback repository."""
2738
def set_reference_info(self, file_id, tree_path, branch_location):
2739
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2741
def get_reference_info(self, file_id):
2742
Branch.get_reference_info(self, file_id)
2744
def reference_parent(self, file_id, path, possible_transports=None):
2745
return Branch.reference_parent(self, file_id, path,
2746
possible_transports)
2749
class BzrBranch6(BzrBranch7):
2750
"""See BzrBranchFormat6 for the capabilities of this branch.
2752
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2756
def get_stacked_on_url(self):
2757
raise errors.UnstackableBranchFormat(self._format, self.base)
2760
######################################################################
2761
# results of operations
2764
class _Result(object):
2766
def _show_tag_conficts(self, to_file):
2767
if not getattr(self, 'tag_conflicts', None):
2769
to_file.write('Conflicting tags:\n')
2770
for name, value1, value2 in self.tag_conflicts:
2771
to_file.write(' %s\n' % (name, ))
2774
class PullResult(_Result):
2775
"""Result of a Branch.pull operation.
2777
:ivar old_revno: Revision number before pull.
2778
:ivar new_revno: Revision number after pull.
2779
:ivar old_revid: Tip revision id before pull.
2780
:ivar new_revid: Tip revision id after pull.
2781
:ivar source_branch: Source (local) branch object. (read locked)
2782
:ivar master_branch: Master branch of the target, or the target if no
2784
:ivar local_branch: target branch if there is a Master, else None
2785
:ivar target_branch: Target/destination branch object. (write locked)
2786
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2790
# DEPRECATED: pull used to return the change in revno
2791
return self.new_revno - self.old_revno
2793
def report(self, to_file):
2795
if self.old_revid == self.new_revid:
2796
to_file.write('No revisions to pull.\n')
2798
to_file.write('Now on revision %d.\n' % self.new_revno)
2799
self._show_tag_conficts(to_file)
2802
class BranchPushResult(_Result):
2803
"""Result of a Branch.push operation.
2805
:ivar old_revno: Revision number (eg 10) of the target before push.
2806
:ivar new_revno: Revision number (eg 12) of the target after push.
2807
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2809
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2811
:ivar source_branch: Source branch object that the push was from. This is
2812
read locked, and generally is a local (and thus low latency) branch.
2813
:ivar master_branch: If target is a bound branch, the master branch of
2814
target, or target itself. Always write locked.
2815
:ivar target_branch: The direct Branch where data is being sent (write
2817
:ivar local_branch: If the target is a bound branch this will be the
2818
target, otherwise it will be None.
2822
# DEPRECATED: push used to return the change in revno
2823
return self.new_revno - self.old_revno
2825
def report(self, to_file):
2826
"""Write a human-readable description of the result."""
2827
if self.old_revid == self.new_revid:
2828
note('No new revisions to push.')
2830
note('Pushed up to revision %d.' % self.new_revno)
2831
self._show_tag_conficts(to_file)
2834
class BranchCheckResult(object):
2835
"""Results of checking branch consistency.
2840
def __init__(self, branch):
2841
self.branch = branch
2842
self.ghosts_in_mainline = False
2844
def report_results(self, verbose):
2845
"""Report the check results via trace.note.
2847
:param verbose: Requests more detailed display of what was checked,
2850
note('checked branch %s format %s',
2852
self.branch._format)
2853
if self.ghosts_in_mainline:
2854
note('branch contains ghosts in mainline')
2857
class Converter5to6(object):
2858
"""Perform an in-place upgrade of format 5 to format 6"""
2860
def convert(self, branch):
2861
# Data for 5 and 6 can peacefully coexist.
2862
format = BzrBranchFormat6()
2863
new_branch = format.open(branch.bzrdir, _found=True)
2865
# Copy source data into target
2866
new_branch._write_last_revision_info(*branch.last_revision_info())
2867
new_branch.set_parent(branch.get_parent())
2868
new_branch.set_bound_location(branch.get_bound_location())
2869
new_branch.set_push_location(branch.get_push_location())
2871
# New branch has no tags by default
2872
new_branch.tags._set_tag_dict({})
2874
# Copying done; now update target format
2875
new_branch._transport.put_bytes('format',
2876
format.get_format_string(),
2877
mode=new_branch.bzrdir._get_file_mode())
2879
# Clean up old files
2880
new_branch._transport.delete('revision-history')
2882
branch.set_parent(None)
2883
except errors.NoSuchFile:
2885
branch.set_bound_location(None)
2888
class Converter6to7(object):
2889
"""Perform an in-place upgrade of format 6 to format 7"""
2891
def convert(self, branch):
2892
format = BzrBranchFormat7()
2893
branch._set_config_location('stacked_on_location', '')
2894
# update target format
2895
branch._transport.put_bytes('format', format.get_format_string())
2898
class Converter7to8(object):
2899
"""Perform an in-place upgrade of format 6 to format 7"""
2901
def convert(self, branch):
2902
format = BzrBranchFormat8()
2903
branch._transport.put_bytes('references', '')
2904
# update target format
2905
branch._transport.put_bytes('format', format.get_format_string())
2908
def _run_with_write_locked_target(target, callable, *args, **kwargs):
2909
"""Run ``callable(*args, **kwargs)``, write-locking target for the
2912
_run_with_write_locked_target will attempt to release the lock it acquires.
2914
If an exception is raised by callable, then that exception *will* be
2915
propagated, even if the unlock attempt raises its own error. Thus
2916
_run_with_write_locked_target should be preferred to simply doing::
2920
return callable(*args, **kwargs)
2925
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
2926
# should share code?
2929
result = callable(*args, **kwargs)
2931
exc_info = sys.exc_info()
2935
raise exc_info[0], exc_info[1], exc_info[2]
2941
class InterBranch(InterObject):
2942
"""This class represents operations taking place between two branches.
2944
Its instances have methods like pull() and push() and contain
2945
references to the source and target repositories these operations
2946
can be carried out on.
2950
"""The available optimised InterBranch types."""
2953
def _get_branch_formats_to_test():
2954
"""Return a tuple with the Branch formats to use when testing."""
2955
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
2957
def pull(self, overwrite=False, stop_revision=None,
2958
possible_transports=None, local=False):
2959
"""Mirror source into target branch.
2961
The target branch is considered to be 'local', having low latency.
2963
:returns: PullResult instance
2965
raise NotImplementedError(self.pull)
2967
def update_revisions(self, stop_revision=None, overwrite=False,
2969
"""Pull in new perfect-fit revisions.
2971
:param stop_revision: Updated until the given revision
2972
:param overwrite: Always set the branch pointer, rather than checking
2973
to see if it is a proper descendant.
2974
:param graph: A Graph object that can be used to query history
2975
information. This can be None.
2978
raise NotImplementedError(self.update_revisions)
2980
def push(self, overwrite=False, stop_revision=None,
2981
_override_hook_source_branch=None):
2982
"""Mirror the source branch into the target branch.
2984
The source branch is considered to be 'local', having low latency.
2986
raise NotImplementedError(self.push)
2989
class GenericInterBranch(InterBranch):
2990
"""InterBranch implementation that uses public Branch functions.
2994
def _get_branch_formats_to_test():
2995
return BranchFormat._default_format, BranchFormat._default_format
2997
def update_revisions(self, stop_revision=None, overwrite=False,
2999
"""See InterBranch.update_revisions()."""
3000
self.source.lock_read()
3002
other_revno, other_last_revision = self.source.last_revision_info()
3003
stop_revno = None # unknown
3004
if stop_revision is None:
3005
stop_revision = other_last_revision
3006
if _mod_revision.is_null(stop_revision):
3007
# if there are no commits, we're done.
3009
stop_revno = other_revno
3011
# what's the current last revision, before we fetch [and change it
3013
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3014
# we fetch here so that we don't process data twice in the common
3015
# case of having something to pull, and so that the check for
3016
# already merged can operate on the just fetched graph, which will
3017
# be cached in memory.
3018
self.target.fetch(self.source, stop_revision)
3019
# Check to see if one is an ancestor of the other
3022
graph = self.target.repository.get_graph()
3023
if self.target._check_if_descendant_or_diverged(
3024
stop_revision, last_rev, graph, self.source):
3025
# stop_revision is a descendant of last_rev, but we aren't
3026
# overwriting, so we're done.
3028
if stop_revno is None:
3030
graph = self.target.repository.get_graph()
3031
this_revno, this_last_revision = \
3032
self.target.last_revision_info()
3033
stop_revno = graph.find_distance_to_null(stop_revision,
3034
[(other_last_revision, other_revno),
3035
(this_last_revision, this_revno)])
3036
self.target.set_last_revision_info(stop_revno, stop_revision)
3038
self.source.unlock()
3040
def pull(self, overwrite=False, stop_revision=None,
3041
possible_transports=None, _hook_master=None, run_hooks=True,
3042
_override_hook_target=None, local=False):
3045
:param _hook_master: Private parameter - set the branch to
3046
be supplied as the master to pull hooks.
3047
:param run_hooks: Private parameter - if false, this branch
3048
is being called because it's the master of the primary branch,
3049
so it should not run its hooks.
3050
:param _override_hook_target: Private parameter - set the branch to be
3051
supplied as the target_branch to pull hooks.
3052
:param local: Only update the local branch, and not the bound branch.
3054
# This type of branch can't be bound.
3056
raise errors.LocalRequiresBoundBranch()
3057
result = PullResult()
3058
result.source_branch = self.source
3059
if _override_hook_target is None:
3060
result.target_branch = self.target
3062
result.target_branch = _override_hook_target
3063
self.source.lock_read()
3065
# We assume that during 'pull' the target repository is closer than
3067
self.source.update_references(self.target)
3068
graph = self.target.repository.get_graph(self.source.repository)
3069
# TODO: Branch formats should have a flag that indicates
3070
# that revno's are expensive, and pull() should honor that flag.
3072
result.old_revno, result.old_revid = \
3073
self.target.last_revision_info()
3074
self.target.update_revisions(self.source, stop_revision,
3075
overwrite=overwrite, graph=graph)
3076
# TODO: The old revid should be specified when merging tags,
3077
# so a tags implementation that versions tags can only
3078
# pull in the most recent changes. -- JRV20090506
3079
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3081
result.new_revno, result.new_revid = self.target.last_revision_info()
3083
result.master_branch = _hook_master
3084
result.local_branch = result.target_branch
3086
result.master_branch = result.target_branch
3087
result.local_branch = None
3089
for hook in Branch.hooks['post_pull']:
3092
self.source.unlock()
3095
def push(self, overwrite=False, stop_revision=None,
3096
_override_hook_source_branch=None):
3097
"""See InterBranch.push.
3099
This is the basic concrete implementation of push()
3101
:param _override_hook_source_branch: If specified, run
3102
the hooks passing this Branch as the source, rather than self.
3103
This is for use of RemoteBranch, where push is delegated to the
3104
underlying vfs-based Branch.
3106
# TODO: Public option to disable running hooks - should be trivial but
3108
self.source.lock_read()
3110
return _run_with_write_locked_target(
3111
self.target, self._push_with_bound_branches, overwrite,
3113
_override_hook_source_branch=_override_hook_source_branch)
3115
self.source.unlock()
3117
def _push_with_bound_branches(self, overwrite, stop_revision,
3118
_override_hook_source_branch=None):
3119
"""Push from source into target, and into target's master if any.
3122
if _override_hook_source_branch:
3123
result.source_branch = _override_hook_source_branch
3124
for hook in Branch.hooks['post_push']:
3127
bound_location = self.target.get_bound_location()
3128
if bound_location and self.target.base != bound_location:
3129
# there is a master branch.
3131
# XXX: Why the second check? Is it even supported for a branch to
3132
# be bound to itself? -- mbp 20070507
3133
master_branch = self.target.get_master_branch()
3134
master_branch.lock_write()
3136
# push into the master from the source branch.
3137
self.source._basic_push(master_branch, overwrite, stop_revision)
3138
# and push into the target branch from the source. Note that we
3139
# push from the source branch again, because its considered the
3140
# highest bandwidth repository.
3141
result = self.source._basic_push(self.target, overwrite,
3143
result.master_branch = master_branch
3144
result.local_branch = self.target
3148
master_branch.unlock()
3151
result = self.source._basic_push(self.target, overwrite,
3153
# TODO: Why set master_branch and local_branch if there's no
3154
# binding? Maybe cleaner to just leave them unset? -- mbp
3156
result.master_branch = self.target
3157
result.local_branch = None
3162
def is_compatible(self, source, target):
3163
# GenericBranch uses the public API, so always compatible
3167
class InterToBranch5(GenericInterBranch):
3170
def _get_branch_formats_to_test():
3171
return BranchFormat._default_format, BzrBranchFormat5()
3173
def pull(self, overwrite=False, stop_revision=None,
3174
possible_transports=None, run_hooks=True,
3175
_override_hook_target=None, local=False):
3176
"""Pull from source into self, updating my master if any.
3178
:param run_hooks: Private parameter - if false, this branch
3179
is being called because it's the master of the primary branch,
3180
so it should not run its hooks.
3182
bound_location = self.target.get_bound_location()
3183
if local and not bound_location:
3184
raise errors.LocalRequiresBoundBranch()
3185
master_branch = None
3186
if not local and bound_location and self.source.base != bound_location:
3187
# not pulling from master, so we need to update master.
3188
master_branch = self.target.get_master_branch(possible_transports)
3189
master_branch.lock_write()
3192
# pull from source into master.
3193
master_branch.pull(self.source, overwrite, stop_revision,
3195
return super(InterToBranch5, self).pull(overwrite,
3196
stop_revision, _hook_master=master_branch,
3197
run_hooks=run_hooks,
3198
_override_hook_target=_override_hook_target)
3201
master_branch.unlock()
3204
InterBranch.register_optimiser(GenericInterBranch)
3205
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
