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# Copyright (C) 2005-2010 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TransportConfig
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from bzrlib.repofmt.pack_repo import RepositoryFormatKnitPack5RichRoot
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.hooks import HookPoint, Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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hooks: An instance of BranchHooks.
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# this is really an instance variable - FIXME move it there
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def __init__(self, *ignored, **ignored_too):
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self.tags = self._format.make_tags(self)
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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self._partial_revision_id_to_revno_cache = {}
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self._partial_revision_history_cache = []
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self._last_revision_info_cache = None
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self._merge_sorted_revisions_cache = None
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hooks = Branch.hooks['open']
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def _open_hook(self):
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"""Called by init to allow simpler extension of the base class."""
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def _activate_fallback_location(self, url):
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"""Activate the branch/repository from url as a fallback repository."""
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repo = self._get_fallback_repository(url)
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if repo.has_same_location(self.repository):
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raise errors.UnstackableLocationError(self.base, url)
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self.repository.add_fallback_repository(repo)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self.repository._format,
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self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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def open_containing(url, possible_transports=None):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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return control.open_branch(), relpath
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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def get_config(self):
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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master is not None:
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# return the master branch value
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except errors.BzrError, e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map and
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len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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if direction == 'reverse':
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if direction == 'forward':
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return reversed(list(filtered))
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raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
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"""Iterate over an inclusive range of sorted revisions."""
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rev_iter = iter(merge_sorted_revisions)
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if start_revision_id is not None:
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id != start_revision_id:
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# The decision to include the start or not
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# depends on the stop_rule if a stop is provided
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# so pop this node back into the iterator
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rev_iter = chain(iter([node]), rev_iter)
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if stop_revision_id is None:
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for node in rev_iter:
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rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'exclude':
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id == stop_revision_id:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'include':
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for node in rev_iter:
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rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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if rev_id == stop_revision_id:
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elif stop_rule == 'with-merges':
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stop_rev = self.repository.get_revision(stop_revision_id)
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if stop_rev.parent_ids:
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left_parent = stop_rev.parent_ids[0]
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left_parent = _mod_revision.NULL_REVISION
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# left_parent is the actual revision we want to stop logging at,
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# since we want to show the merged revisions after the stop_rev too
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reached_stop_revision_id = False
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revision_id_whitelist = []
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id == left_parent:
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# reached the left parent after the stop_revision
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if (not reached_stop_revision_id or
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rev_id in revision_id_whitelist):
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yield (rev_id, node.merge_depth, node.revno,
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if reached_stop_revision_id or rev_id == stop_revision_id:
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# only do the merged revs of rev_id from now on
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rev = self.repository.get_revision(rev_id)
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reached_stop_revision_id = True
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revision_id_whitelist.extend(rev.parent_ids)
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raise ValueError('invalid stop_rule %r' % stop_rule)
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def leave_lock_in_place(self):
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"""Tell this branch object not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this branch object to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.dont_leave_in_place()
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def bind(self, other):
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"""Bind the local branch the other branch.
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:param other: The branch to bind to
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raise errors.UpgradeRequired(self.base)
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def set_append_revisions_only(self, enabled):
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if not self._format.supports_set_append_revisions_only():
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raise errors.UpgradeRequired(self.base)
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self.get_config().set_user_option('append_revisions_only', value,
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def set_reference_info(self, file_id, tree_path, branch_location):
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"""Set the branch location to use for a tree reference."""
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raise errors.UnsupportedOperation(self.set_reference_info, self)
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def get_reference_info(self, file_id):
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"""Get the tree_path and branch_location for a tree reference."""
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raise errors.UnsupportedOperation(self.get_reference_info, self)
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def fetch(self, from_branch, last_revision=None, pb=None):
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"""Copy revisions from from_branch into this branch.
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:param from_branch: Where to copy from.
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:param last_revision: What revision to stop at (None for at the end
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:param pb: An optional progress bar to use.
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if self.base == from_branch.base:
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symbol_versioning.warn(
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symbol_versioning.deprecated_in((1, 14, 0))
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% "pb parameter to fetch()")
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from_branch.lock_read()
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if last_revision is None:
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last_revision = from_branch.last_revision()
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last_revision = _mod_revision.ensure_null(last_revision)
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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def get_bound_location(self):
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"""Return the URL of the branch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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def get_old_bound_location(self):
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"""Return the URL of the branch we used to be bound to
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raise errors.UpgradeRequired(self.base)
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def get_commit_builder(self, parents, config=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this branch.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Optional configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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config = self.get_config()
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return self.repository.get_commit_builder(self, parents, config,
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timestamp, timezone, committer, revprops, revision_id)
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def get_master_branch(self, possible_transports=None):
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"""Return the branch we are bound to.
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:return: Either a Branch, or None
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise errors.InvalidRevisionNumber(revno)
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return self.repository.get_revision_delta(rh[revno-1])
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def get_stacked_on_url(self):
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"""Get the URL this branch is stacked against.
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:raises NotStacked: If the branch is not stacked.
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:raises UnstackableBranchFormat: If the branch does not support
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raise NotImplementedError(self.get_stacked_on_url)
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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raise NotImplementedError(self.print_file)
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def set_revision_history(self, rev_history):
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raise NotImplementedError(self.set_revision_history)
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def set_parent(self, url):
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"""See Branch.set_parent."""
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# TODO: Maybe delete old location files?
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# URLs should never be unicode, even on the local fs,
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# FIXUP this and get_parent in a future branch format bump:
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# read and rewrite the file. RBC 20060125
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if isinstance(url, unicode):
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url = url.encode('ascii')
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except UnicodeEncodeError:
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raise errors.InvalidURL(url,
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"Urls must be 7-bit ascii, "
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"use bzrlib.urlutils.escape")
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url = urlutils.relative_url(self.base, url)
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self._set_parent_location(url)
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def set_stacked_on_url(self, url):
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"""Set the URL this branch is stacked against.
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:raises UnstackableBranchFormat: If the branch does not support
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:raises UnstackableRepositoryFormat: If the repository does not support
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if not self._format.supports_stacking():
691
raise errors.UnstackableBranchFormat(self._format, self.base)
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# XXX: Changing from one fallback repository to another does not check
693
# 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()
698
old_url = self.get_stacked_on_url()
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except (errors.NotStacked, errors.UnstackableBranchFormat,
700
errors.UnstackableRepositoryFormat):
704
self._activate_fallback_location(url)
705
# write this out after the repository is stacked to avoid setting a
706
# stacked config that doesn't work.
707
self._set_config_location('stacked_on_location', url)
710
"""Change a branch to be unstacked, copying data as needed.
712
Don't call this directly, use set_stacked_on_url(None).
714
pb = ui.ui_factory.nested_progress_bar()
716
pb.update("Unstacking")
717
# The basic approach here is to fetch the tip of the branch,
718
# including all available ghosts, from the existing stacked
719
# repository into a new repository object without the fallbacks.
721
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
722
# correct for CHKMap repostiories
723
old_repository = self.repository
724
if len(old_repository._fallback_repositories) != 1:
725
raise AssertionError("can't cope with fallback repositories "
726
"of %r" % (self.repository,))
727
# unlock it, including unlocking the fallback
728
old_repository.unlock()
729
old_repository.lock_read()
731
# Repositories don't offer an interface to remove fallback
732
# repositories today; take the conceptually simpler option and just
733
# reopen it. We reopen it starting from the URL so that we
734
# get a separate connection for RemoteRepositories and can
735
# stream from one of them to the other. This does mean doing
736
# separate SSH connection setup, but unstacking is not a
737
# common operation so it's tolerable.
738
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
739
new_repository = new_bzrdir.find_repository()
740
self.repository = new_repository
741
if self.repository._fallback_repositories:
742
raise AssertionError("didn't expect %r to have "
743
"fallback_repositories"
744
% (self.repository,))
745
# this is not paired with an unlock because it's just restoring
746
# the previous state; the lock's released when set_stacked_on_url
748
self.repository.lock_write()
749
# XXX: If you unstack a branch while it has a working tree
750
# with a pending merge, the pending-merged revisions will no
751
# longer be present. You can (probably) revert and remerge.
753
# XXX: This only fetches up to the tip of the repository; it
754
# doesn't bring across any tags. That's fairly consistent
755
# with how branch works, but perhaps not ideal.
756
self.repository.fetch(old_repository,
757
revision_id=self.last_revision(),
760
old_repository.unlock()
764
def _set_tags_bytes(self, bytes):
765
"""Mirror method for _get_tags_bytes.
767
:seealso: Branch._get_tags_bytes.
769
return _run_with_write_locked_target(self, self._transport.put_bytes,
772
def _cache_revision_history(self, rev_history):
773
"""Set the cached revision history to rev_history.
775
The revision_history method will use this cache to avoid regenerating
776
the revision history.
778
This API is semi-public; it only for use by subclasses, all other code
779
should consider it to be private.
781
self._revision_history_cache = rev_history
783
def _cache_revision_id_to_revno(self, revision_id_to_revno):
784
"""Set the cached revision_id => revno map to revision_id_to_revno.
786
This API is semi-public; it only for use by subclasses, all other code
787
should consider it to be private.
789
self._revision_id_to_revno_cache = revision_id_to_revno
791
def _clear_cached_state(self):
792
"""Clear any cached data on this branch, e.g. cached revision history.
794
This means the next call to revision_history will need to call
795
_gen_revision_history.
797
This API is semi-public; it only for use by subclasses, all other code
798
should consider it to be private.
800
self._revision_history_cache = None
801
self._revision_id_to_revno_cache = None
802
self._last_revision_info_cache = None
803
self._merge_sorted_revisions_cache = None
804
self._partial_revision_history_cache = []
805
self._partial_revision_id_to_revno_cache = {}
807
def _gen_revision_history(self):
808
"""Return sequence of revision hashes on to this branch.
810
Unlike revision_history, this method always regenerates or rereads the
811
revision history, i.e. it does not cache the result, so repeated calls
814
Concrete subclasses should override this instead of revision_history so
815
that subclasses do not need to deal with caching logic.
817
This API is semi-public; it only for use by subclasses, all other code
818
should consider it to be private.
820
raise NotImplementedError(self._gen_revision_history)
823
def revision_history(self):
824
"""Return sequence of revision ids on this branch.
826
This method will cache the revision history for as long as it is safe to
829
if 'evil' in debug.debug_flags:
830
mutter_callsite(3, "revision_history scales with history.")
831
if self._revision_history_cache is not None:
832
history = self._revision_history_cache
834
history = self._gen_revision_history()
835
self._cache_revision_history(history)
839
"""Return current revision number for this branch.
841
That is equivalent to the number of revisions committed to
844
return self.last_revision_info()[0]
847
"""Older format branches cannot bind or unbind."""
848
raise errors.UpgradeRequired(self.base)
850
def last_revision(self):
851
"""Return last revision id, or NULL_REVISION."""
852
return self.last_revision_info()[1]
855
def last_revision_info(self):
856
"""Return information about the last revision.
858
:return: A tuple (revno, revision_id).
860
if self._last_revision_info_cache is None:
861
self._last_revision_info_cache = self._last_revision_info()
862
return self._last_revision_info_cache
864
def _last_revision_info(self):
865
rh = self.revision_history()
868
return (revno, rh[-1])
870
return (0, _mod_revision.NULL_REVISION)
872
@deprecated_method(deprecated_in((1, 6, 0)))
873
def missing_revisions(self, other, stop_revision=None):
874
"""Return a list of new revisions that would perfectly fit.
876
If self and other have not diverged, return a list of the revisions
877
present in other, but missing from self.
879
self_history = self.revision_history()
880
self_len = len(self_history)
881
other_history = other.revision_history()
882
other_len = len(other_history)
883
common_index = min(self_len, other_len) -1
884
if common_index >= 0 and \
885
self_history[common_index] != other_history[common_index]:
886
raise errors.DivergedBranches(self, other)
888
if stop_revision is None:
889
stop_revision = other_len
891
if stop_revision > other_len:
892
raise errors.NoSuchRevision(self, stop_revision)
893
return other_history[self_len:stop_revision]
896
def update_revisions(self, other, stop_revision=None, overwrite=False,
898
"""Pull in new perfect-fit revisions.
900
:param other: Another Branch to pull from
901
:param stop_revision: Updated until the given revision
902
:param overwrite: Always set the branch pointer, rather than checking
903
to see if it is a proper descendant.
904
:param graph: A Graph object that can be used to query history
905
information. This can be None.
908
return InterBranch.get(other, self).update_revisions(stop_revision,
911
def import_last_revision_info(self, source_repo, revno, revid):
912
"""Set the last revision info, importing from another repo if necessary.
914
This is used by the bound branch code to upload a revision to
915
the master branch first before updating the tip of the local branch.
917
:param source_repo: Source repository to optionally fetch from
918
:param revno: Revision number of the new tip
919
:param revid: Revision id of the new tip
921
if not self.repository.has_same_location(source_repo):
922
self.repository.fetch(source_repo, revision_id=revid)
923
self.set_last_revision_info(revno, revid)
925
def revision_id_to_revno(self, revision_id):
926
"""Given a revision id, return its revno"""
927
if _mod_revision.is_null(revision_id):
929
history = self.revision_history()
931
return history.index(revision_id) + 1
933
raise errors.NoSuchRevision(self, revision_id)
936
def get_rev_id(self, revno, history=None):
937
"""Find the revision id of the specified revno."""
939
return _mod_revision.NULL_REVISION
940
last_revno, last_revid = self.last_revision_info()
941
if revno == last_revno:
943
if revno <= 0 or revno > last_revno:
944
raise errors.NoSuchRevision(self, revno)
945
distance_from_last = last_revno - revno
946
if len(self._partial_revision_history_cache) <= distance_from_last:
947
self._extend_partial_history(distance_from_last)
948
return self._partial_revision_history_cache[distance_from_last]
951
def pull(self, source, overwrite=False, stop_revision=None,
952
possible_transports=None, *args, **kwargs):
953
"""Mirror source into this branch.
955
This branch is considered to be 'local', having low latency.
957
:returns: PullResult instance
959
return InterBranch.get(source, self).pull(overwrite=overwrite,
960
stop_revision=stop_revision,
961
possible_transports=possible_transports, *args, **kwargs)
963
def push(self, target, overwrite=False, stop_revision=None, *args,
965
"""Mirror this branch into target.
967
This branch is considered to be 'local', having low latency.
969
return InterBranch.get(self, target).push(overwrite, stop_revision,
972
def lossy_push(self, target, stop_revision=None):
973
"""Push deltas into another branch.
975
:note: This does not, like push, retain the revision ids from
976
the source branch and will, rather than adding bzr-specific
977
metadata, push only those semantics of the revision that can be
978
natively represented by this branch' VCS.
980
:param target: Target branch
981
:param stop_revision: Revision to push, defaults to last revision.
982
:return: BranchPushResult with an extra member revidmap:
983
A dictionary mapping revision ids from the target branch
984
to new revision ids in the target branch, for each
985
revision that was pushed.
987
inter = InterBranch.get(self, target)
988
lossy_push = getattr(inter, "lossy_push", None)
989
if lossy_push is None:
990
raise errors.LossyPushToSameVCS(self, target)
991
return lossy_push(stop_revision)
993
def basis_tree(self):
994
"""Return `Tree` object for last revision."""
995
return self.repository.revision_tree(self.last_revision())
997
def get_parent(self):
998
"""Return the parent location of the branch.
1000
This is the default location for pull/missing. The usual
1001
pattern is that the user can override it by specifying a
1004
parent = self._get_parent_location()
1007
# This is an old-format absolute path to a local branch
1008
# turn it into a url
1009
if parent.startswith('/'):
1010
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1012
return urlutils.join(self.base[:-1], parent)
1013
except errors.InvalidURLJoin, e:
1014
raise errors.InaccessibleParent(parent, self.base)
1016
def _get_parent_location(self):
1017
raise NotImplementedError(self._get_parent_location)
1019
def _set_config_location(self, name, url, config=None,
1020
make_relative=False):
1022
config = self.get_config()
1026
url = urlutils.relative_url(self.base, url)
1027
config.set_user_option(name, url, warn_masked=True)
1029
def _get_config_location(self, name, config=None):
1031
config = self.get_config()
1032
location = config.get_user_option(name)
1037
def get_child_submit_format(self):
1038
"""Return the preferred format of submissions to this branch."""
1039
return self.get_config().get_user_option("child_submit_format")
1041
def get_submit_branch(self):
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
return self.get_config().get_user_option('submit_branch')
1050
def set_submit_branch(self, location):
1051
"""Return the submit location of the branch.
1053
This is the default location for bundle. The usual
1054
pattern is that the user can override it by specifying a
1057
self.get_config().set_user_option('submit_branch', location,
1060
def get_public_branch(self):
1061
"""Return the public location of the branch.
1063
This is used by merge directives.
1065
return self._get_config_location('public_branch')
1067
def set_public_branch(self, location):
1068
"""Return the submit location of the branch.
1070
This is the default location for bundle. The usual
1071
pattern is that the user can override it by specifying a
1074
self._set_config_location('public_branch', location)
1076
def get_push_location(self):
1077
"""Return the None or the location to push this branch to."""
1078
push_loc = self.get_config().get_user_option('push_location')
1081
def set_push_location(self, location):
1082
"""Set a new push location for this branch."""
1083
raise NotImplementedError(self.set_push_location)
1085
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1086
"""Run the post_change_branch_tip hooks."""
1087
hooks = Branch.hooks['post_change_branch_tip']
1090
new_revno, new_revid = self.last_revision_info()
1091
params = ChangeBranchTipParams(
1092
self, old_revno, new_revno, old_revid, new_revid)
1096
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1097
"""Run the pre_change_branch_tip hooks."""
1098
hooks = Branch.hooks['pre_change_branch_tip']
1101
old_revno, old_revid = self.last_revision_info()
1102
params = ChangeBranchTipParams(
1103
self, old_revno, new_revno, old_revid, new_revid)
1109
"""Synchronise this branch with the master branch if any.
1111
:return: None or the last_revision pivoted out during the update.
1115
def check_revno(self, revno):
1117
Check whether a revno corresponds to any revision.
1118
Zero (the NULL revision) is considered valid.
1121
self.check_real_revno(revno)
1123
def check_real_revno(self, revno):
1125
Check whether a revno corresponds to a real revision.
1126
Zero (the NULL revision) is considered invalid
1128
if revno < 1 or revno > self.revno():
1129
raise errors.InvalidRevisionNumber(revno)
1132
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
1133
"""Clone this branch into to_bzrdir preserving all semantic values.
1135
Most API users will want 'create_clone_on_transport', which creates a
1136
new bzrdir and branch on the fly.
1138
revision_id: if not None, the revision history in the new branch will
1139
be truncated to end with revision_id.
1141
result = to_bzrdir.create_branch()
1144
if repository_policy is not None:
1145
repository_policy.configure_branch(result)
1146
self.copy_content_into(result, revision_id=revision_id)
1152
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
1153
"""Create a new line of development from the branch, into to_bzrdir.
1155
to_bzrdir controls the branch format.
1157
revision_id: if not None, the revision history in the new branch will
1158
be truncated to end with revision_id.
1160
if (repository_policy is not None and
1161
repository_policy.requires_stacking()):
1162
to_bzrdir._format.require_stacking(_skip_repo=True)
1163
result = to_bzrdir.create_branch()
1166
if repository_policy is not None:
1167
repository_policy.configure_branch(result)
1168
self.copy_content_into(result, revision_id=revision_id)
1169
result.set_parent(self.bzrdir.root_transport.base)
1174
def _synchronize_history(self, destination, revision_id):
1175
"""Synchronize last revision and revision history between branches.
1177
This version is most efficient when the destination is also a
1178
BzrBranch6, but works for BzrBranch5, as long as the destination's
1179
repository contains all the lefthand ancestors of the intended
1180
last_revision. If not, set_last_revision_info will fail.
1182
:param destination: The branch to copy the history into
1183
:param revision_id: The revision-id to truncate history at. May
1184
be None to copy complete history.
1186
source_revno, source_revision_id = self.last_revision_info()
1187
if revision_id is None:
1188
revno, revision_id = source_revno, source_revision_id
1190
graph = self.repository.get_graph()
1192
revno = graph.find_distance_to_null(revision_id,
1193
[(source_revision_id, source_revno)])
1194
except errors.GhostRevisionsHaveNoRevno:
1195
# Default to 1, if we can't find anything else
1197
destination.set_last_revision_info(revno, revision_id)
1200
def copy_content_into(self, destination, revision_id=None):
1201
"""Copy the content of self into destination.
1203
revision_id: if not None, the revision history in the new branch will
1204
be truncated to end with revision_id.
1206
self.update_references(destination)
1207
self._synchronize_history(destination, revision_id)
1209
parent = self.get_parent()
1210
except errors.InaccessibleParent, e:
1211
mutter('parent was not accessible to copy: %s', e)
1214
destination.set_parent(parent)
1215
if self._push_should_merge_tags():
1216
self.tags.merge_to(destination.tags)
1218
def update_references(self, target):
1219
if not getattr(self._format, 'supports_reference_locations', False):
1221
reference_dict = self._get_all_reference_info()
1222
if len(reference_dict) == 0:
1224
old_base = self.base
1225
new_base = target.base
1226
target_reference_dict = target._get_all_reference_info()
1227
for file_id, (tree_path, branch_location) in (
1228
reference_dict.items()):
1229
branch_location = urlutils.rebase_url(branch_location,
1231
target_reference_dict.setdefault(
1232
file_id, (tree_path, branch_location))
1233
target._set_all_reference_info(target_reference_dict)
1236
def check(self, refs):
1237
"""Check consistency of the branch.
1239
In particular this checks that revisions given in the revision-history
1240
do actually match up in the revision graph, and that they're all
1241
present in the repository.
1243
Callers will typically also want to check the repository.
1245
:param refs: Calculated refs for this branch as specified by
1246
branch._get_check_refs()
1247
:return: A BranchCheckResult.
1249
result = BranchCheckResult(self)
1250
last_revno, last_revision_id = self.last_revision_info()
1251
actual_revno = refs[('lefthand-distance', last_revision_id)]
1252
if actual_revno != last_revno:
1253
result.errors.append(errors.BzrCheckError(
1254
'revno does not match len(mainline) %s != %s' % (
1255
last_revno, actual_revno)))
1256
# TODO: We should probably also check that self.revision_history
1257
# matches the repository for older branch formats.
1258
# If looking for the code that cross-checks repository parents against
1259
# the iter_reverse_revision_history output, that is now a repository
1263
def _get_checkout_format(self):
1264
"""Return the most suitable metadir for a checkout of this branch.
1265
Weaves are used if this branch's repository uses weaves.
1267
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1268
from bzrlib.repofmt import weaverepo
1269
format = bzrdir.BzrDirMetaFormat1()
1270
format.repository_format = weaverepo.RepositoryFormat7()
1272
format = self.repository.bzrdir.checkout_metadir()
1273
format.set_branch_format(self._format)
1276
def create_clone_on_transport(self, to_transport, revision_id=None,
1277
stacked_on=None, create_prefix=False, use_existing_dir=False):
1278
"""Create a clone of this branch and its bzrdir.
1280
:param to_transport: The transport to clone onto.
1281
:param revision_id: The revision id to use as tip in the new branch.
1282
If None the tip is obtained from this branch.
1283
:param stacked_on: An optional URL to stack the clone on.
1284
:param create_prefix: Create any missing directories leading up to
1286
:param use_existing_dir: Use an existing directory if one exists.
1288
# XXX: Fix the bzrdir API to allow getting the branch back from the
1289
# clone call. Or something. 20090224 RBC/spiv.
1290
if revision_id is None:
1291
revision_id = self.last_revision()
1292
dir_to = self.bzrdir.clone_on_transport(to_transport,
1293
revision_id=revision_id, stacked_on=stacked_on,
1294
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1295
return dir_to.open_branch()
1297
def create_checkout(self, to_location, revision_id=None,
1298
lightweight=False, accelerator_tree=None,
1300
"""Create a checkout of a branch.
1302
:param to_location: The url to produce the checkout at
1303
:param revision_id: The revision to check out
1304
:param lightweight: If True, produce a lightweight checkout, otherwise,
1305
produce a bound branch (heavyweight checkout)
1306
:param accelerator_tree: A tree which can be used for retrieving file
1307
contents more quickly than the revision tree, i.e. a workingtree.
1308
The revision tree will be used for cases where accelerator_tree's
1309
content is different.
1310
:param hardlink: If true, hard-link files from accelerator_tree,
1312
:return: The tree of the created checkout
1314
t = transport.get_transport(to_location)
1317
format = self._get_checkout_format()
1318
checkout = format.initialize_on_transport(t)
1319
from_branch = BranchReferenceFormat().initialize(checkout,
1322
format = self._get_checkout_format()
1323
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1324
to_location, force_new_tree=False, format=format)
1325
checkout = checkout_branch.bzrdir
1326
checkout_branch.bind(self)
1327
# pull up to the specified revision_id to set the initial
1328
# branch tip correctly, and seed it with history.
1329
checkout_branch.pull(self, stop_revision=revision_id)
1331
tree = checkout.create_workingtree(revision_id,
1332
from_branch=from_branch,
1333
accelerator_tree=accelerator_tree,
1335
basis_tree = tree.basis_tree()
1336
basis_tree.lock_read()
1338
for path, file_id in basis_tree.iter_references():
1339
reference_parent = self.reference_parent(file_id, path)
1340
reference_parent.create_checkout(tree.abspath(path),
1341
basis_tree.get_reference_revision(file_id, path),
1348
def reconcile(self, thorough=True):
1349
"""Make sure the data stored in this branch is consistent."""
1350
from bzrlib.reconcile import BranchReconciler
1351
reconciler = BranchReconciler(self, thorough=thorough)
1352
reconciler.reconcile()
1355
def reference_parent(self, file_id, path, possible_transports=None):
1356
"""Return the parent branch for a tree-reference file_id
1357
:param file_id: The file_id of the tree reference
1358
:param path: The path of the file_id in the tree
1359
:return: A branch associated with the file_id
1361
# FIXME should provide multiple branches, based on config
1362
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1363
possible_transports=possible_transports)
1365
def supports_tags(self):
1366
return self._format.supports_tags()
1368
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1370
"""Ensure that revision_b is a descendant of revision_a.
1372
This is a helper function for update_revisions.
1374
:raises: DivergedBranches if revision_b has diverged from revision_a.
1375
:returns: True if revision_b is a descendant of revision_a.
1377
relation = self._revision_relations(revision_a, revision_b, graph)
1378
if relation == 'b_descends_from_a':
1380
elif relation == 'diverged':
1381
raise errors.DivergedBranches(self, other_branch)
1382
elif relation == 'a_descends_from_b':
1385
raise AssertionError("invalid relation: %r" % (relation,))
1387
def _revision_relations(self, revision_a, revision_b, graph):
1388
"""Determine the relationship between two revisions.
1390
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1392
heads = graph.heads([revision_a, revision_b])
1393
if heads == set([revision_b]):
1394
return 'b_descends_from_a'
1395
elif heads == set([revision_a, revision_b]):
1396
# These branches have diverged
1398
elif heads == set([revision_a]):
1399
return 'a_descends_from_b'
1401
raise AssertionError("invalid heads: %r" % (heads,))
1404
class BranchFormat(object):
1405
"""An encapsulation of the initialization and open routines for a format.
1407
Formats provide three things:
1408
* An initialization routine,
1412
Formats are placed in an dict by their format string for reference
1413
during branch opening. Its not required that these be instances, they
1414
can be classes themselves with class methods - it simply depends on
1415
whether state is needed for a given format or not.
1417
Once a format is deprecated, just deprecate the initialize and open
1418
methods on the format class. Do not deprecate the object, as the
1419
object will be created every time regardless.
1422
_default_format = None
1423
"""The default format used for new branches."""
1426
"""The known formats."""
1428
can_set_append_revisions_only = True
1430
def __eq__(self, other):
1431
return self.__class__ is other.__class__
1433
def __ne__(self, other):
1434
return not (self == other)
1437
def find_format(klass, a_bzrdir, name=None):
1438
"""Return the format for the branch object in a_bzrdir."""
1440
transport = a_bzrdir.get_branch_transport(None, name=name)
1441
format_string = transport.get_bytes("format")
1442
return klass._formats[format_string]
1443
except errors.NoSuchFile:
1444
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1446
raise errors.UnknownFormatError(format=format_string, kind='branch')
1449
def get_default_format(klass):
1450
"""Return the current default format."""
1451
return klass._default_format
1453
def get_reference(self, a_bzrdir):
1454
"""Get the target reference of the branch in a_bzrdir.
1456
format probing must have been completed before calling
1457
this method - it is assumed that the format of the branch
1458
in a_bzrdir is correct.
1460
:param a_bzrdir: The bzrdir to get the branch data from.
1461
:return: None if the branch is not a reference branch.
1466
def set_reference(self, a_bzrdir, to_branch):
1467
"""Set the target reference of the branch in a_bzrdir.
1469
format probing must have been completed before calling
1470
this method - it is assumed that the format of the branch
1471
in a_bzrdir is correct.
1473
:param a_bzrdir: The bzrdir to set the branch reference for.
1474
:param to_branch: branch that the checkout is to reference
1476
raise NotImplementedError(self.set_reference)
1478
def get_format_string(self):
1479
"""Return the ASCII format string that identifies this format."""
1480
raise NotImplementedError(self.get_format_string)
1482
def get_format_description(self):
1483
"""Return the short format description for this format."""
1484
raise NotImplementedError(self.get_format_description)
1486
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1487
lock_type='metadir', set_format=True):
1488
"""Initialize a branch in a bzrdir, with specified files
1490
:param a_bzrdir: The bzrdir to initialize the branch in
1491
:param utf8_files: The files to create as a list of
1492
(filename, content) tuples
1493
:param name: Name of colocated branch to create, if any
1494
:param set_format: If True, set the format with
1495
self.get_format_string. (BzrBranch4 has its format set
1497
:return: a branch in this format
1499
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
1500
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1502
'metadir': ('lock', lockdir.LockDir),
1503
'branch4': ('branch-lock', lockable_files.TransportLock),
1505
lock_name, lock_class = lock_map[lock_type]
1506
control_files = lockable_files.LockableFiles(branch_transport,
1507
lock_name, lock_class)
1508
control_files.create_lock()
1510
control_files.lock_write()
1511
except errors.LockContention:
1512
if lock_type != 'branch4':
1518
utf8_files += [('format', self.get_format_string())]
1520
for (filename, content) in utf8_files:
1521
branch_transport.put_bytes(
1523
mode=a_bzrdir._get_file_mode())
1526
control_files.unlock()
1527
return self.open(a_bzrdir, name, _found=True)
1529
def initialize(self, a_bzrdir, name=None):
1530
"""Create a branch of this format in a_bzrdir.
1532
:param name: Name of the colocated branch to create.
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, name=None, _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 name: Name of colocated branch to open
1574
:param _found: a private parameter, do not use it. It is used to
1575
indicate if format probing has already be done.
1576
:param ignore_fallbacks: when set, no fallback branches will be opened
1577
(if there are any). Default is to open fallbacks.
1579
raise NotImplementedError(self.open)
1582
def register_format(klass, format):
1583
"""Register a metadir format."""
1584
klass._formats[format.get_format_string()] = format
1585
# Metadir formats have a network name of their format string, and get
1586
# registered as class factories.
1587
network_format_registry.register(format.get_format_string(), format.__class__)
1590
def set_default_format(klass, format):
1591
klass._default_format = format
1593
def supports_set_append_revisions_only(self):
1594
"""True if this format supports set_append_revisions_only."""
1597
def supports_stacking(self):
1598
"""True if this format records a stacked-on branch."""
1602
def unregister_format(klass, format):
1603
del klass._formats[format.get_format_string()]
1606
return self.get_format_description().rstrip()
1608
def supports_tags(self):
1609
"""True if this format supports tags stored in the branch"""
1610
return False # by default
1613
class BranchHooks(Hooks):
1614
"""A dictionary mapping hook name to a list of callables for branch hooks.
1616
e.g. ['set_rh'] Is the list of items to be called when the
1617
set_revision_history function is invoked.
1621
"""Create the default hooks.
1623
These are all empty initially, because by default nothing should get
1626
Hooks.__init__(self)
1627
self.create_hook(HookPoint('set_rh',
1628
"Invoked whenever the revision history has been set via "
1629
"set_revision_history. The api signature is (branch, "
1630
"revision_history), and the branch will be write-locked. "
1631
"The set_rh hook can be expensive for bzr to trigger, a better "
1632
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1633
self.create_hook(HookPoint('open',
1634
"Called with the Branch object that has been opened after a "
1635
"branch is opened.", (1, 8), None))
1636
self.create_hook(HookPoint('post_push',
1637
"Called after a push operation completes. post_push is called "
1638
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1639
"bzr client.", (0, 15), None))
1640
self.create_hook(HookPoint('post_pull',
1641
"Called after a pull operation completes. post_pull is called "
1642
"with a bzrlib.branch.PullResult object and only runs in the "
1643
"bzr client.", (0, 15), None))
1644
self.create_hook(HookPoint('pre_commit',
1645
"Called after a commit is calculated but before it is is "
1646
"completed. pre_commit is called with (local, master, old_revno, "
1647
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1648
"). old_revid is NULL_REVISION for the first commit to a branch, "
1649
"tree_delta is a TreeDelta object describing changes from the "
1650
"basis revision. hooks MUST NOT modify this delta. "
1651
" future_tree is an in-memory tree obtained from "
1652
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1653
"tree.", (0,91), None))
1654
self.create_hook(HookPoint('post_commit',
1655
"Called in the bzr client after a commit has completed. "
1656
"post_commit is called with (local, master, old_revno, old_revid, "
1657
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1658
"commit to a branch.", (0, 15), None))
1659
self.create_hook(HookPoint('post_uncommit',
1660
"Called in the bzr client after an uncommit completes. "
1661
"post_uncommit is called with (local, master, old_revno, "
1662
"old_revid, new_revno, new_revid) where local is the local branch "
1663
"or None, master is the target branch, and an empty branch "
1664
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1665
self.create_hook(HookPoint('pre_change_branch_tip',
1666
"Called in bzr client and server before a change to the tip of a "
1667
"branch is made. pre_change_branch_tip is called with a "
1668
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1669
"commit, uncommit will all trigger this hook.", (1, 6), None))
1670
self.create_hook(HookPoint('post_change_branch_tip',
1671
"Called in bzr client and server after a change to the tip of a "
1672
"branch is made. post_change_branch_tip is called with a "
1673
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1674
"commit, uncommit will all trigger this hook.", (1, 4), None))
1675
self.create_hook(HookPoint('transform_fallback_location',
1676
"Called when a stacked branch is activating its fallback "
1677
"locations. transform_fallback_location is called with (branch, "
1678
"url), and should return a new url. Returning the same url "
1679
"allows it to be used as-is, returning a different one can be "
1680
"used to cause the branch to stack on a closer copy of that "
1681
"fallback_location. Note that the branch cannot have history "
1682
"accessing methods called on it during this hook because the "
1683
"fallback locations have not been activated. When there are "
1684
"multiple hooks installed for transform_fallback_location, "
1685
"all are called with the url returned from the previous hook."
1686
"The order is however undefined.", (1, 9), None))
1689
# install the default hooks into the Branch class.
1690
Branch.hooks = BranchHooks()
1693
class ChangeBranchTipParams(object):
1694
"""Object holding parameters passed to *_change_branch_tip hooks.
1696
There are 5 fields that hooks may wish to access:
1698
:ivar branch: the branch being changed
1699
:ivar old_revno: revision number before the change
1700
:ivar new_revno: revision number after the change
1701
:ivar old_revid: revision id before the change
1702
:ivar new_revid: revision id after the change
1704
The revid fields are strings. The revno fields are integers.
1707
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1708
"""Create a group of ChangeBranchTip parameters.
1710
:param branch: The branch being changed.
1711
:param old_revno: Revision number before the change.
1712
:param new_revno: Revision number after the change.
1713
:param old_revid: Tip revision id before the change.
1714
:param new_revid: Tip revision id after the change.
1716
self.branch = branch
1717
self.old_revno = old_revno
1718
self.new_revno = new_revno
1719
self.old_revid = old_revid
1720
self.new_revid = new_revid
1722
def __eq__(self, other):
1723
return self.__dict__ == other.__dict__
1726
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1727
self.__class__.__name__, self.branch,
1728
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1731
class BzrBranchFormat4(BranchFormat):
1732
"""Bzr branch format 4.
1735
- a revision-history file.
1736
- a branch-lock lock file [ to be shared with the bzrdir ]
1739
def get_format_description(self):
1740
"""See BranchFormat.get_format_description()."""
1741
return "Branch format 4"
1743
def initialize(self, a_bzrdir, name=None):
1744
"""Create a branch of this format in a_bzrdir."""
1745
utf8_files = [('revision-history', ''),
1746
('branch-name', ''),
1748
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1749
lock_type='branch4', set_format=False)
1752
super(BzrBranchFormat4, self).__init__()
1753
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1755
def network_name(self):
1756
"""The network name for this format is the control dirs disk label."""
1757
return self._matchingbzrdir.get_format_string()
1759
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1760
"""See BranchFormat.open()."""
1762
# we are being called directly and must probe.
1763
raise NotImplementedError
1764
return BzrBranch(_format=self,
1765
_control_files=a_bzrdir._control_files,
1768
_repository=a_bzrdir.open_repository())
1771
return "Bazaar-NG branch format 4"
1774
class BranchFormatMetadir(BranchFormat):
1775
"""Common logic for meta-dir based branch formats."""
1777
def _branch_class(self):
1778
"""What class to instantiate on open calls."""
1779
raise NotImplementedError(self._branch_class)
1781
def network_name(self):
1782
"""A simple byte string uniquely identifying this format for RPC calls.
1784
Metadir branch formats use their format string.
1786
return self.get_format_string()
1788
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1789
"""See BranchFormat.open()."""
1791
format = BranchFormat.find_format(a_bzrdir, name=name)
1792
if format.__class__ != self.__class__:
1793
raise AssertionError("wrong format %r found for %r" %
1796
transport = a_bzrdir.get_branch_transport(None, name=name)
1797
control_files = lockable_files.LockableFiles(transport, 'lock',
1799
return self._branch_class()(_format=self,
1800
_control_files=control_files,
1803
_repository=a_bzrdir.find_repository(),
1804
ignore_fallbacks=ignore_fallbacks)
1805
except errors.NoSuchFile:
1806
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1809
super(BranchFormatMetadir, self).__init__()
1810
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1811
self._matchingbzrdir.set_branch_format(self)
1813
def supports_tags(self):
1817
class BzrBranchFormat5(BranchFormatMetadir):
1818
"""Bzr branch format 5.
1821
- a revision-history file.
1823
- a lock dir guarding the branch itself
1824
- all of this stored in a branch/ subdirectory
1825
- works with shared repositories.
1827
This format is new in bzr 0.8.
1830
def _branch_class(self):
1833
def get_format_string(self):
1834
"""See BranchFormat.get_format_string()."""
1835
return "Bazaar-NG branch format 5\n"
1837
def get_format_description(self):
1838
"""See BranchFormat.get_format_description()."""
1839
return "Branch format 5"
1841
def initialize(self, a_bzrdir, name=None):
1842
"""Create a branch of this format in a_bzrdir."""
1843
utf8_files = [('revision-history', ''),
1844
('branch-name', ''),
1846
return self._initialize_helper(a_bzrdir, utf8_files, name)
1848
def supports_tags(self):
1852
class BzrBranchFormat6(BranchFormatMetadir):
1853
"""Branch format with last-revision and tags.
1855
Unlike previous formats, this has no explicit revision history. Instead,
1856
this just stores the last-revision, and the left-hand history leading
1857
up to there is the history.
1859
This format was introduced in bzr 0.15
1860
and became the default in 0.91.
1863
def _branch_class(self):
1866
def get_format_string(self):
1867
"""See BranchFormat.get_format_string()."""
1868
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1870
def get_format_description(self):
1871
"""See BranchFormat.get_format_description()."""
1872
return "Branch format 6"
1874
def initialize(self, a_bzrdir, name=None):
1875
"""Create a branch of this format in a_bzrdir."""
1876
utf8_files = [('last-revision', '0 null:\n'),
1877
('branch.conf', ''),
1880
return self._initialize_helper(a_bzrdir, utf8_files, name)
1882
def make_tags(self, branch):
1883
"""See bzrlib.branch.BranchFormat.make_tags()."""
1884
return BasicTags(branch)
1886
def supports_set_append_revisions_only(self):
1890
class BzrBranchFormat8(BranchFormatMetadir):
1891
"""Metadir format supporting storing locations of subtree branches."""
1893
def _branch_class(self):
1896
def get_format_string(self):
1897
"""See BranchFormat.get_format_string()."""
1898
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1900
def get_format_description(self):
1901
"""See BranchFormat.get_format_description()."""
1902
return "Branch format 8"
1904
def initialize(self, a_bzrdir, name=None):
1905
"""Create a branch of this format in a_bzrdir."""
1906
utf8_files = [('last-revision', '0 null:\n'),
1907
('branch.conf', ''),
1911
return self._initialize_helper(a_bzrdir, utf8_files, name)
1914
super(BzrBranchFormat8, self).__init__()
1915
self._matchingbzrdir.repository_format = \
1916
RepositoryFormatKnitPack5RichRoot()
1918
def make_tags(self, branch):
1919
"""See bzrlib.branch.BranchFormat.make_tags()."""
1920
return BasicTags(branch)
1922
def supports_set_append_revisions_only(self):
1925
def supports_stacking(self):
1928
supports_reference_locations = True
1931
class BzrBranchFormat7(BzrBranchFormat8):
1932
"""Branch format with last-revision, tags, and a stacked location pointer.
1934
The stacked location pointer is passed down to the repository and requires
1935
a repository format with supports_external_lookups = True.
1937
This format was introduced in bzr 1.6.
1940
def initialize(self, a_bzrdir, name=None):
1941
"""Create a branch of this format in a_bzrdir."""
1942
utf8_files = [('last-revision', '0 null:\n'),
1943
('branch.conf', ''),
1946
return self._initialize_helper(a_bzrdir, utf8_files, name)
1948
def _branch_class(self):
1951
def get_format_string(self):
1952
"""See BranchFormat.get_format_string()."""
1953
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
1955
def get_format_description(self):
1956
"""See BranchFormat.get_format_description()."""
1957
return "Branch format 7"
1959
def supports_set_append_revisions_only(self):
1962
supports_reference_locations = False
1965
class BranchReferenceFormat(BranchFormat):
1966
"""Bzr branch reference format.
1968
Branch references are used in implementing checkouts, they
1969
act as an alias to the real branch which is at some other url.
1976
def get_format_string(self):
1977
"""See BranchFormat.get_format_string()."""
1978
return "Bazaar-NG Branch Reference Format 1\n"
1980
def get_format_description(self):
1981
"""See BranchFormat.get_format_description()."""
1982
return "Checkout reference format 1"
1984
def get_reference(self, a_bzrdir):
1985
"""See BranchFormat.get_reference()."""
1986
transport = a_bzrdir.get_branch_transport(None)
1987
return transport.get_bytes('location')
1989
def set_reference(self, a_bzrdir, to_branch):
1990
"""See BranchFormat.set_reference()."""
1991
transport = a_bzrdir.get_branch_transport(None)
1992
location = transport.put_bytes('location', to_branch.base)
1994
def initialize(self, a_bzrdir, name=None, target_branch=None):
1995
"""Create a branch of this format in a_bzrdir."""
1996
if target_branch is None:
1997
# this format does not implement branch itself, thus the implicit
1998
# creation contract must see it as uninitializable
1999
raise errors.UninitializableFormat(self)
2000
mutter('creating branch reference in %s', a_bzrdir.transport.base)
2001
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
2002
branch_transport.put_bytes('location',
2003
target_branch.bzrdir.root_transport.base)
2004
branch_transport.put_bytes('format', self.get_format_string())
2006
a_bzrdir, name, _found=True,
2007
possible_transports=[target_branch.bzrdir.root_transport])
2010
super(BranchReferenceFormat, self).__init__()
2011
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2012
self._matchingbzrdir.set_branch_format(self)
2014
def _make_reference_clone_function(format, a_branch):
2015
"""Create a clone() routine for a branch dynamically."""
2016
def clone(to_bzrdir, revision_id=None,
2017
repository_policy=None):
2018
"""See Branch.clone()."""
2019
return format.initialize(to_bzrdir, target_branch=a_branch)
2020
# cannot obey revision_id limits when cloning a reference ...
2021
# FIXME RBC 20060210 either nuke revision_id for clone, or
2022
# emit some sort of warning/error to the caller ?!
2025
def open(self, a_bzrdir, name=None, _found=False, location=None,
2026
possible_transports=None, ignore_fallbacks=False):
2027
"""Return the branch that the branch reference in a_bzrdir points at.
2029
:param a_bzrdir: A BzrDir that contains a branch.
2030
:param name: Name of colocated branch to open, if any
2031
:param _found: a private parameter, do not use it. It is used to
2032
indicate if format probing has already be done.
2033
:param ignore_fallbacks: when set, no fallback branches will be opened
2034
(if there are any). Default is to open fallbacks.
2035
:param location: The location of the referenced branch. If
2036
unspecified, this will be determined from the branch reference in
2038
:param possible_transports: An optional reusable transports list.
2041
format = BranchFormat.find_format(a_bzrdir, name=name)
2042
if format.__class__ != self.__class__:
2043
raise AssertionError("wrong format %r found for %r" %
2045
if location is None:
2046
location = self.get_reference(a_bzrdir)
2047
real_bzrdir = bzrdir.BzrDir.open(
2048
location, possible_transports=possible_transports)
2049
result = real_bzrdir.open_branch(name=name,
2050
ignore_fallbacks=ignore_fallbacks)
2051
# this changes the behaviour of result.clone to create a new reference
2052
# rather than a copy of the content of the branch.
2053
# I did not use a proxy object because that needs much more extensive
2054
# testing, and we are only changing one behaviour at the moment.
2055
# If we decide to alter more behaviours - i.e. the implicit nickname
2056
# then this should be refactored to introduce a tested proxy branch
2057
# and a subclass of that for use in overriding clone() and ....
2059
result.clone = self._make_reference_clone_function(result)
2063
network_format_registry = registry.FormatRegistry()
2064
"""Registry of formats indexed by their network name.
2066
The network name for a branch format is an identifier that can be used when
2067
referring to formats with smart server operations. See
2068
BranchFormat.network_name() for more detail.
2072
# formats which have no format string are not discoverable
2073
# and not independently creatable, so are not registered.
2074
__format5 = BzrBranchFormat5()
2075
__format6 = BzrBranchFormat6()
2076
__format7 = BzrBranchFormat7()
2077
__format8 = BzrBranchFormat8()
2078
BranchFormat.register_format(__format5)
2079
BranchFormat.register_format(BranchReferenceFormat())
2080
BranchFormat.register_format(__format6)
2081
BranchFormat.register_format(__format7)
2082
BranchFormat.register_format(__format8)
2083
BranchFormat.set_default_format(__format7)
2084
_legacy_formats = [BzrBranchFormat4(),
2086
network_format_registry.register(
2087
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2090
class BzrBranch(Branch, _RelockDebugMixin):
2091
"""A branch stored in the actual filesystem.
2093
Note that it's "local" in the context of the filesystem; it doesn't
2094
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2095
it's writable, and can be accessed via the normal filesystem API.
2097
:ivar _transport: Transport for file operations on this branch's
2098
control files, typically pointing to the .bzr/branch directory.
2099
:ivar repository: Repository for this branch.
2100
:ivar base: The url of the base directory for this branch; the one
2101
containing the .bzr directory.
2102
:ivar name: Optional colocated branch name as it exists in the control
2106
def __init__(self, _format=None,
2107
_control_files=None, a_bzrdir=None, name=None,
2108
_repository=None, ignore_fallbacks=False):
2109
"""Create new branch object at a particular location."""
2110
if a_bzrdir is None:
2111
raise ValueError('a_bzrdir must be supplied')
2113
self.bzrdir = a_bzrdir
2114
self._base = self.bzrdir.transport.clone('..').base
2116
# XXX: We should be able to just do
2117
# self.base = self.bzrdir.root_transport.base
2118
# but this does not quite work yet -- mbp 20080522
2119
self._format = _format
2120
if _control_files is None:
2121
raise ValueError('BzrBranch _control_files is None')
2122
self.control_files = _control_files
2123
self._transport = _control_files._transport
2124
self.repository = _repository
2125
Branch.__init__(self)
2128
if self.name is None:
2129
return '%s(%r)' % (self.__class__.__name__, self.base)
2131
return '%s(%r,%r)' % (self.__class__.__name__, self.base, self.name)
2135
def _get_base(self):
2136
"""Returns the directory containing the control directory."""
2139
base = property(_get_base, doc="The URL for the root of this branch.")
2141
def _get_config(self):
2142
return TransportConfig(self._transport, 'branch.conf')
2144
def is_locked(self):
2145
return self.control_files.is_locked()
2147
def lock_write(self, token=None):
2148
if not self.is_locked():
2149
self._note_lock('w')
2150
# All-in-one needs to always unlock/lock.
2151
repo_control = getattr(self.repository, 'control_files', None)
2152
if self.control_files == repo_control or not self.is_locked():
2153
self.repository._warn_if_deprecated(self)
2154
self.repository.lock_write()
2159
return self.control_files.lock_write(token=token)
2162
self.repository.unlock()
2165
def lock_read(self):
2166
if not self.is_locked():
2167
self._note_lock('r')
2168
# All-in-one needs to always unlock/lock.
2169
repo_control = getattr(self.repository, 'control_files', None)
2170
if self.control_files == repo_control or not self.is_locked():
2171
self.repository._warn_if_deprecated(self)
2172
self.repository.lock_read()
2177
self.control_files.lock_read()
2180
self.repository.unlock()
2183
@only_raises(errors.LockNotHeld, errors.LockBroken)
2186
self.control_files.unlock()
2188
# All-in-one needs to always unlock/lock.
2189
repo_control = getattr(self.repository, 'control_files', None)
2190
if (self.control_files == repo_control or
2191
not self.control_files.is_locked()):
2192
self.repository.unlock()
2193
if not self.control_files.is_locked():
2194
# we just released the lock
2195
self._clear_cached_state()
2197
def peek_lock_mode(self):
2198
if self.control_files._lock_count == 0:
2201
return self.control_files._lock_mode
2203
def get_physical_lock_status(self):
2204
return self.control_files.get_physical_lock_status()
2207
def print_file(self, file, revision_id):
2208
"""See Branch.print_file."""
2209
return self.repository.print_file(file, revision_id)
2211
def _write_revision_history(self, history):
2212
"""Factored out of set_revision_history.
2214
This performs the actual writing to disk.
2215
It is intended to be called by BzrBranch5.set_revision_history."""
2216
self._transport.put_bytes(
2217
'revision-history', '\n'.join(history),
2218
mode=self.bzrdir._get_file_mode())
2221
def set_revision_history(self, rev_history):
2222
"""See Branch.set_revision_history."""
2223
if 'evil' in debug.debug_flags:
2224
mutter_callsite(3, "set_revision_history scales with history.")
2225
check_not_reserved_id = _mod_revision.check_not_reserved_id
2226
for rev_id in rev_history:
2227
check_not_reserved_id(rev_id)
2228
if Branch.hooks['post_change_branch_tip']:
2229
# Don't calculate the last_revision_info() if there are no hooks
2231
old_revno, old_revid = self.last_revision_info()
2232
if len(rev_history) == 0:
2233
revid = _mod_revision.NULL_REVISION
2235
revid = rev_history[-1]
2236
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2237
self._write_revision_history(rev_history)
2238
self._clear_cached_state()
2239
self._cache_revision_history(rev_history)
2240
for hook in Branch.hooks['set_rh']:
2241
hook(self, rev_history)
2242
if Branch.hooks['post_change_branch_tip']:
2243
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2245
def _synchronize_history(self, destination, revision_id):
2246
"""Synchronize last revision and revision history between branches.
2248
This version is most efficient when the destination is also a
2249
BzrBranch5, but works for BzrBranch6 as long as the revision
2250
history is the true lefthand parent history, and all of the revisions
2251
are in the destination's repository. If not, set_revision_history
2254
:param destination: The branch to copy the history into
2255
:param revision_id: The revision-id to truncate history at. May
2256
be None to copy complete history.
2258
if not isinstance(destination._format, BzrBranchFormat5):
2259
super(BzrBranch, self)._synchronize_history(
2260
destination, revision_id)
2262
if revision_id == _mod_revision.NULL_REVISION:
2265
new_history = self.revision_history()
2266
if revision_id is not None and new_history != []:
2268
new_history = new_history[:new_history.index(revision_id) + 1]
2270
rev = self.repository.get_revision(revision_id)
2271
new_history = rev.get_history(self.repository)[1:]
2272
destination.set_revision_history(new_history)
2275
def set_last_revision_info(self, revno, revision_id):
2276
"""Set the last revision of this branch.
2278
The caller is responsible for checking that the revno is correct
2279
for this revision id.
2281
It may be possible to set the branch last revision to an id not
2282
present in the repository. However, branches can also be
2283
configured to check constraints on history, in which case this may not
2286
revision_id = _mod_revision.ensure_null(revision_id)
2287
# this old format stores the full history, but this api doesn't
2288
# provide it, so we must generate, and might as well check it's
2290
history = self._lefthand_history(revision_id)
2291
if len(history) != revno:
2292
raise AssertionError('%d != %d' % (len(history), revno))
2293
self.set_revision_history(history)
2295
def _gen_revision_history(self):
2296
history = self._transport.get_bytes('revision-history').split('\n')
2297
if history[-1:] == ['']:
2298
# There shouldn't be a trailing newline, but just in case.
2303
def generate_revision_history(self, revision_id, last_rev=None,
2305
"""Create a new revision history that will finish with revision_id.
2307
:param revision_id: the new tip to use.
2308
:param last_rev: The previous last_revision. If not None, then this
2309
must be a ancestory of revision_id, or DivergedBranches is raised.
2310
:param other_branch: The other branch that DivergedBranches should
2311
raise with respect to.
2313
self.set_revision_history(self._lefthand_history(revision_id,
2314
last_rev, other_branch))
2316
def basis_tree(self):
2317
"""See Branch.basis_tree."""
2318
return self.repository.revision_tree(self.last_revision())
2320
def _get_parent_location(self):
2321
_locs = ['parent', 'pull', 'x-pull']
2324
return self._transport.get_bytes(l).strip('\n')
2325
except errors.NoSuchFile:
2329
def _basic_push(self, target, overwrite, stop_revision):
2330
"""Basic implementation of push without bound branches or hooks.
2332
Must be called with source read locked and target write locked.
2334
result = BranchPushResult()
2335
result.source_branch = self
2336
result.target_branch = target
2337
result.old_revno, result.old_revid = target.last_revision_info()
2338
self.update_references(target)
2339
if result.old_revid != self.last_revision():
2340
# We assume that during 'push' this repository is closer than
2342
graph = self.repository.get_graph(target.repository)
2343
target.update_revisions(self, stop_revision,
2344
overwrite=overwrite, graph=graph)
2345
if self._push_should_merge_tags():
2346
result.tag_conflicts = self.tags.merge_to(target.tags,
2348
result.new_revno, result.new_revid = target.last_revision_info()
2351
def get_stacked_on_url(self):
2352
raise errors.UnstackableBranchFormat(self._format, self.base)
2354
def set_push_location(self, location):
2355
"""See Branch.set_push_location."""
2356
self.get_config().set_user_option(
2357
'push_location', location,
2358
store=_mod_config.STORE_LOCATION_NORECURSE)
2360
def _set_parent_location(self, url):
2362
self._transport.delete('parent')
2364
self._transport.put_bytes('parent', url + '\n',
2365
mode=self.bzrdir._get_file_mode())
2368
class BzrBranch5(BzrBranch):
2369
"""A format 5 branch. This supports new features over plain branches.
2371
It has support for a master_branch which is the data for bound branches.
2374
def get_bound_location(self):
2376
return self._transport.get_bytes('bound')[:-1]
2377
except errors.NoSuchFile:
2381
def get_master_branch(self, possible_transports=None):
2382
"""Return the branch we are bound to.
2384
:return: Either a Branch, or None
2386
This could memoise the branch, but if thats done
2387
it must be revalidated on each new lock.
2388
So for now we just don't memoise it.
2389
# RBC 20060304 review this decision.
2391
bound_loc = self.get_bound_location()
2395
return Branch.open(bound_loc,
2396
possible_transports=possible_transports)
2397
except (errors.NotBranchError, errors.ConnectionError), e:
2398
raise errors.BoundBranchConnectionFailure(
2402
def set_bound_location(self, location):
2403
"""Set the target where this branch is bound to.
2405
:param location: URL to the target branch
2408
self._transport.put_bytes('bound', location+'\n',
2409
mode=self.bzrdir._get_file_mode())
2412
self._transport.delete('bound')
2413
except errors.NoSuchFile:
2418
def bind(self, other):
2419
"""Bind this branch to the branch other.
2421
This does not push or pull data between the branches, though it does
2422
check for divergence to raise an error when the branches are not
2423
either the same, or one a prefix of the other. That behaviour may not
2424
be useful, so that check may be removed in future.
2426
:param other: The branch to bind to
2429
# TODO: jam 20051230 Consider checking if the target is bound
2430
# It is debatable whether you should be able to bind to
2431
# a branch which is itself bound.
2432
# Committing is obviously forbidden,
2433
# but binding itself may not be.
2434
# Since we *have* to check at commit time, we don't
2435
# *need* to check here
2437
# we want to raise diverged if:
2438
# last_rev is not in the other_last_rev history, AND
2439
# other_last_rev is not in our history, and do it without pulling
2441
self.set_bound_location(other.base)
2445
"""If bound, unbind"""
2446
return self.set_bound_location(None)
2449
def update(self, possible_transports=None):
2450
"""Synchronise this branch with the master branch if any.
2452
:return: None or the last_revision that was pivoted out during the
2455
master = self.get_master_branch(possible_transports)
2456
if master is not None:
2457
old_tip = _mod_revision.ensure_null(self.last_revision())
2458
self.pull(master, overwrite=True)
2459
if self.repository.get_graph().is_ancestor(old_tip,
2460
_mod_revision.ensure_null(self.last_revision())):
2466
class BzrBranch8(BzrBranch5):
2467
"""A branch that stores tree-reference locations."""
2469
def _open_hook(self):
2470
if self._ignore_fallbacks:
2473
url = self.get_stacked_on_url()
2474
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2475
errors.UnstackableBranchFormat):
2478
for hook in Branch.hooks['transform_fallback_location']:
2479
url = hook(self, url)
2481
hook_name = Branch.hooks.get_hook_name(hook)
2482
raise AssertionError(
2483
"'transform_fallback_location' hook %s returned "
2484
"None, not a URL." % hook_name)
2485
self._activate_fallback_location(url)
2487
def __init__(self, *args, **kwargs):
2488
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2489
super(BzrBranch8, self).__init__(*args, **kwargs)
2490
self._last_revision_info_cache = None
2491
self._reference_info = None
2493
def _clear_cached_state(self):
2494
super(BzrBranch8, self)._clear_cached_state()
2495
self._last_revision_info_cache = None
2496
self._reference_info = None
2498
def _last_revision_info(self):
2499
revision_string = self._transport.get_bytes('last-revision')
2500
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2501
revision_id = cache_utf8.get_cached_utf8(revision_id)
2503
return revno, revision_id
2505
def _write_last_revision_info(self, revno, revision_id):
2506
"""Simply write out the revision id, with no checks.
2508
Use set_last_revision_info to perform this safely.
2510
Does not update the revision_history cache.
2511
Intended to be called by set_last_revision_info and
2512
_write_revision_history.
2514
revision_id = _mod_revision.ensure_null(revision_id)
2515
out_string = '%d %s\n' % (revno, revision_id)
2516
self._transport.put_bytes('last-revision', out_string,
2517
mode=self.bzrdir._get_file_mode())
2520
def set_last_revision_info(self, revno, revision_id):
2521
revision_id = _mod_revision.ensure_null(revision_id)
2522
old_revno, old_revid = self.last_revision_info()
2523
if self._get_append_revisions_only():
2524
self._check_history_violation(revision_id)
2525
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2526
self._write_last_revision_info(revno, revision_id)
2527
self._clear_cached_state()
2528
self._last_revision_info_cache = revno, revision_id
2529
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2531
def _synchronize_history(self, destination, revision_id):
2532
"""Synchronize last revision and revision history between branches.
2534
:see: Branch._synchronize_history
2536
# XXX: The base Branch has a fast implementation of this method based
2537
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2538
# that uses set_revision_history. This class inherits from BzrBranch5,
2539
# but wants the fast implementation, so it calls
2540
# Branch._synchronize_history directly.
2541
Branch._synchronize_history(self, destination, revision_id)
2543
def _check_history_violation(self, revision_id):
2544
last_revision = _mod_revision.ensure_null(self.last_revision())
2545
if _mod_revision.is_null(last_revision):
2547
if last_revision not in self._lefthand_history(revision_id):
2548
raise errors.AppendRevisionsOnlyViolation(self.base)
2550
def _gen_revision_history(self):
2551
"""Generate the revision history from last revision
2553
last_revno, last_revision = self.last_revision_info()
2554
self._extend_partial_history(stop_index=last_revno-1)
2555
return list(reversed(self._partial_revision_history_cache))
2557
def _write_revision_history(self, history):
2558
"""Factored out of set_revision_history.
2560
This performs the actual writing to disk, with format-specific checks.
2561
It is intended to be called by BzrBranch5.set_revision_history.
2563
if len(history) == 0:
2564
last_revision = 'null:'
2566
if history != self._lefthand_history(history[-1]):
2567
raise errors.NotLefthandHistory(history)
2568
last_revision = history[-1]
2569
if self._get_append_revisions_only():
2570
self._check_history_violation(last_revision)
2571
self._write_last_revision_info(len(history), last_revision)
2574
def _set_parent_location(self, url):
2575
"""Set the parent branch"""
2576
self._set_config_location('parent_location', url, make_relative=True)
2579
def _get_parent_location(self):
2580
"""Set the parent branch"""
2581
return self._get_config_location('parent_location')
2584
def _set_all_reference_info(self, info_dict):
2585
"""Replace all reference info stored in a branch.
2587
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2590
writer = rio.RioWriter(s)
2591
for key, (tree_path, branch_location) in info_dict.iteritems():
2592
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2593
branch_location=branch_location)
2594
writer.write_stanza(stanza)
2595
self._transport.put_bytes('references', s.getvalue())
2596
self._reference_info = info_dict
2599
def _get_all_reference_info(self):
2600
"""Return all the reference info stored in a branch.
2602
:return: A dict of {file_id: (tree_path, branch_location)}
2604
if self._reference_info is not None:
2605
return self._reference_info
2606
rio_file = self._transport.get('references')
2608
stanzas = rio.read_stanzas(rio_file)
2609
info_dict = dict((s['file_id'], (s['tree_path'],
2610
s['branch_location'])) for s in stanzas)
2613
self._reference_info = info_dict
2616
def set_reference_info(self, file_id, tree_path, branch_location):
2617
"""Set the branch location to use for a tree reference.
2619
:param file_id: The file-id of the tree reference.
2620
:param tree_path: The path of the tree reference in the tree.
2621
:param branch_location: The location of the branch to retrieve tree
2624
info_dict = self._get_all_reference_info()
2625
info_dict[file_id] = (tree_path, branch_location)
2626
if None in (tree_path, branch_location):
2627
if tree_path is not None:
2628
raise ValueError('tree_path must be None when branch_location'
2630
if branch_location is not None:
2631
raise ValueError('branch_location must be None when tree_path'
2633
del info_dict[file_id]
2634
self._set_all_reference_info(info_dict)
2636
def get_reference_info(self, file_id):
2637
"""Get the tree_path and branch_location for a tree reference.
2639
:return: a tuple of (tree_path, branch_location)
2641
return self._get_all_reference_info().get(file_id, (None, None))
2643
def reference_parent(self, file_id, path, possible_transports=None):
2644
"""Return the parent branch for a tree-reference file_id.
2646
:param file_id: The file_id of the tree reference
2647
:param path: The path of the file_id in the tree
2648
:return: A branch associated with the file_id
2650
branch_location = self.get_reference_info(file_id)[1]
2651
if branch_location is None:
2652
return Branch.reference_parent(self, file_id, path,
2653
possible_transports)
2654
branch_location = urlutils.join(self.base, branch_location)
2655
return Branch.open(branch_location,
2656
possible_transports=possible_transports)
2658
def set_push_location(self, location):
2659
"""See Branch.set_push_location."""
2660
self._set_config_location('push_location', location)
2662
def set_bound_location(self, location):
2663
"""See Branch.set_push_location."""
2665
config = self.get_config()
2666
if location is None:
2667
if config.get_user_option('bound') != 'True':
2670
config.set_user_option('bound', 'False', warn_masked=True)
2673
self._set_config_location('bound_location', location,
2675
config.set_user_option('bound', 'True', warn_masked=True)
2678
def _get_bound_location(self, bound):
2679
"""Return the bound location in the config file.
2681
Return None if the bound parameter does not match"""
2682
config = self.get_config()
2683
config_bound = (config.get_user_option('bound') == 'True')
2684
if config_bound != bound:
2686
return self._get_config_location('bound_location', config=config)
2688
def get_bound_location(self):
2689
"""See Branch.set_push_location."""
2690
return self._get_bound_location(True)
2692
def get_old_bound_location(self):
2693
"""See Branch.get_old_bound_location"""
2694
return self._get_bound_location(False)
2696
def get_stacked_on_url(self):
2697
# you can always ask for the URL; but you might not be able to use it
2698
# if the repo can't support stacking.
2699
## self._check_stackable_repo()
2700
stacked_url = self._get_config_location('stacked_on_location')
2701
if stacked_url is None:
2702
raise errors.NotStacked(self)
2705
def _get_append_revisions_only(self):
2706
value = self.get_config().get_user_option('append_revisions_only')
2707
return value == 'True'
2710
def generate_revision_history(self, revision_id, last_rev=None,
2712
"""See BzrBranch5.generate_revision_history"""
2713
history = self._lefthand_history(revision_id, last_rev, other_branch)
2714
revno = len(history)
2715
self.set_last_revision_info(revno, revision_id)
2718
def get_rev_id(self, revno, history=None):
2719
"""Find the revision id of the specified revno."""
2721
return _mod_revision.NULL_REVISION
2723
last_revno, last_revision_id = self.last_revision_info()
2724
if revno <= 0 or revno > last_revno:
2725
raise errors.NoSuchRevision(self, revno)
2727
if history is not None:
2728
return history[revno - 1]
2730
index = last_revno - revno
2731
if len(self._partial_revision_history_cache) <= index:
2732
self._extend_partial_history(stop_index=index)
2733
if len(self._partial_revision_history_cache) > index:
2734
return self._partial_revision_history_cache[index]
2736
raise errors.NoSuchRevision(self, revno)
2739
def revision_id_to_revno(self, revision_id):
2740
"""Given a revision id, return its revno"""
2741
if _mod_revision.is_null(revision_id):
2744
index = self._partial_revision_history_cache.index(revision_id)
2746
self._extend_partial_history(stop_revision=revision_id)
2747
index = len(self._partial_revision_history_cache) - 1
2748
if self._partial_revision_history_cache[index] != revision_id:
2749
raise errors.NoSuchRevision(self, revision_id)
2750
return self.revno() - index
2753
class BzrBranch7(BzrBranch8):
2754
"""A branch with support for a fallback repository."""
2756
def set_reference_info(self, file_id, tree_path, branch_location):
2757
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2759
def get_reference_info(self, file_id):
2760
Branch.get_reference_info(self, file_id)
2762
def reference_parent(self, file_id, path, possible_transports=None):
2763
return Branch.reference_parent(self, file_id, path,
2764
possible_transports)
2767
class BzrBranch6(BzrBranch7):
2768
"""See BzrBranchFormat6 for the capabilities of this branch.
2770
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2774
def get_stacked_on_url(self):
2775
raise errors.UnstackableBranchFormat(self._format, self.base)
2778
######################################################################
2779
# results of operations
2782
class _Result(object):
2784
def _show_tag_conficts(self, to_file):
2785
if not getattr(self, 'tag_conflicts', None):
2787
to_file.write('Conflicting tags:\n')
2788
for name, value1, value2 in self.tag_conflicts:
2789
to_file.write(' %s\n' % (name, ))
2792
class PullResult(_Result):
2793
"""Result of a Branch.pull operation.
2795
:ivar old_revno: Revision number before pull.
2796
:ivar new_revno: Revision number after pull.
2797
:ivar old_revid: Tip revision id before pull.
2798
:ivar new_revid: Tip revision id after pull.
2799
:ivar source_branch: Source (local) branch object. (read locked)
2800
:ivar master_branch: Master branch of the target, or the target if no
2802
:ivar local_branch: target branch if there is a Master, else None
2803
:ivar target_branch: Target/destination branch object. (write locked)
2804
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2808
# DEPRECATED: pull used to return the change in revno
2809
return self.new_revno - self.old_revno
2811
def report(self, to_file):
2813
if self.old_revid == self.new_revid:
2814
to_file.write('No revisions to pull.\n')
2816
to_file.write('Now on revision %d.\n' % self.new_revno)
2817
self._show_tag_conficts(to_file)
2820
class BranchPushResult(_Result):
2821
"""Result of a Branch.push operation.
2823
:ivar old_revno: Revision number (eg 10) of the target before push.
2824
:ivar new_revno: Revision number (eg 12) of the target after push.
2825
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2827
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2829
:ivar source_branch: Source branch object that the push was from. This is
2830
read locked, and generally is a local (and thus low latency) branch.
2831
:ivar master_branch: If target is a bound branch, the master branch of
2832
target, or target itself. Always write locked.
2833
:ivar target_branch: The direct Branch where data is being sent (write
2835
:ivar local_branch: If the target is a bound branch this will be the
2836
target, otherwise it will be None.
2840
# DEPRECATED: push used to return the change in revno
2841
return self.new_revno - self.old_revno
2843
def report(self, to_file):
2844
"""Write a human-readable description of the result."""
2845
if self.old_revid == self.new_revid:
2846
note('No new revisions to push.')
2848
note('Pushed up to revision %d.' % self.new_revno)
2849
self._show_tag_conficts(to_file)
2852
class BranchCheckResult(object):
2853
"""Results of checking branch consistency.
2858
def __init__(self, branch):
2859
self.branch = branch
2862
def report_results(self, verbose):
2863
"""Report the check results via trace.note.
2865
:param verbose: Requests more detailed display of what was checked,
2868
note('checked branch %s format %s', self.branch.base,
2869
self.branch._format)
2870
for error in self.errors:
2871
note('found error:%s', error)
2874
class Converter5to6(object):
2875
"""Perform an in-place upgrade of format 5 to format 6"""
2877
def convert(self, branch):
2878
# Data for 5 and 6 can peacefully coexist.
2879
format = BzrBranchFormat6()
2880
new_branch = format.open(branch.bzrdir, _found=True)
2882
# Copy source data into target
2883
new_branch._write_last_revision_info(*branch.last_revision_info())
2884
new_branch.set_parent(branch.get_parent())
2885
new_branch.set_bound_location(branch.get_bound_location())
2886
new_branch.set_push_location(branch.get_push_location())
2888
# New branch has no tags by default
2889
new_branch.tags._set_tag_dict({})
2891
# Copying done; now update target format
2892
new_branch._transport.put_bytes('format',
2893
format.get_format_string(),
2894
mode=new_branch.bzrdir._get_file_mode())
2896
# Clean up old files
2897
new_branch._transport.delete('revision-history')
2899
branch.set_parent(None)
2900
except errors.NoSuchFile:
2902
branch.set_bound_location(None)
2905
class Converter6to7(object):
2906
"""Perform an in-place upgrade of format 6 to format 7"""
2908
def convert(self, branch):
2909
format = BzrBranchFormat7()
2910
branch._set_config_location('stacked_on_location', '')
2911
# update target format
2912
branch._transport.put_bytes('format', format.get_format_string())
2915
class Converter7to8(object):
2916
"""Perform an in-place upgrade of format 6 to format 7"""
2918
def convert(self, branch):
2919
format = BzrBranchFormat8()
2920
branch._transport.put_bytes('references', '')
2921
# update target format
2922
branch._transport.put_bytes('format', format.get_format_string())
2925
def _run_with_write_locked_target(target, callable, *args, **kwargs):
2926
"""Run ``callable(*args, **kwargs)``, write-locking target for the
2929
_run_with_write_locked_target will attempt to release the lock it acquires.
2931
If an exception is raised by callable, then that exception *will* be
2932
propagated, even if the unlock attempt raises its own error. Thus
2933
_run_with_write_locked_target should be preferred to simply doing::
2937
return callable(*args, **kwargs)
2942
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
2943
# should share code?
2946
result = callable(*args, **kwargs)
2948
exc_info = sys.exc_info()
2952
raise exc_info[0], exc_info[1], exc_info[2]
2958
class InterBranch(InterObject):
2959
"""This class represents operations taking place between two branches.
2961
Its instances have methods like pull() and push() and contain
2962
references to the source and target repositories these operations
2963
can be carried out on.
2967
"""The available optimised InterBranch types."""
2970
def _get_branch_formats_to_test():
2971
"""Return a tuple with the Branch formats to use when testing."""
2972
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
2974
def pull(self, overwrite=False, stop_revision=None,
2975
possible_transports=None, local=False):
2976
"""Mirror source into target branch.
2978
The target branch is considered to be 'local', having low latency.
2980
:returns: PullResult instance
2982
raise NotImplementedError(self.pull)
2984
def update_revisions(self, stop_revision=None, overwrite=False,
2986
"""Pull in new perfect-fit revisions.
2988
:param stop_revision: Updated until the given revision
2989
:param overwrite: Always set the branch pointer, rather than checking
2990
to see if it is a proper descendant.
2991
:param graph: A Graph object that can be used to query history
2992
information. This can be None.
2995
raise NotImplementedError(self.update_revisions)
2997
def push(self, overwrite=False, stop_revision=None,
2998
_override_hook_source_branch=None):
2999
"""Mirror the source branch into the target branch.
3001
The source branch is considered to be 'local', having low latency.
3003
raise NotImplementedError(self.push)
3006
class GenericInterBranch(InterBranch):
3007
"""InterBranch implementation that uses public Branch functions.
3011
def _get_branch_formats_to_test():
3012
return BranchFormat._default_format, BranchFormat._default_format
3014
def update_revisions(self, stop_revision=None, overwrite=False,
3016
"""See InterBranch.update_revisions()."""
3017
self.source.lock_read()
3019
other_revno, other_last_revision = self.source.last_revision_info()
3020
stop_revno = None # unknown
3021
if stop_revision is None:
3022
stop_revision = other_last_revision
3023
if _mod_revision.is_null(stop_revision):
3024
# if there are no commits, we're done.
3026
stop_revno = other_revno
3028
# what's the current last revision, before we fetch [and change it
3030
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3031
# we fetch here so that we don't process data twice in the common
3032
# case of having something to pull, and so that the check for
3033
# already merged can operate on the just fetched graph, which will
3034
# be cached in memory.
3035
self.target.fetch(self.source, stop_revision)
3036
# Check to see if one is an ancestor of the other
3039
graph = self.target.repository.get_graph()
3040
if self.target._check_if_descendant_or_diverged(
3041
stop_revision, last_rev, graph, self.source):
3042
# stop_revision is a descendant of last_rev, but we aren't
3043
# overwriting, so we're done.
3045
if stop_revno is None:
3047
graph = self.target.repository.get_graph()
3048
this_revno, this_last_revision = \
3049
self.target.last_revision_info()
3050
stop_revno = graph.find_distance_to_null(stop_revision,
3051
[(other_last_revision, other_revno),
3052
(this_last_revision, this_revno)])
3053
self.target.set_last_revision_info(stop_revno, stop_revision)
3055
self.source.unlock()
3057
def pull(self, overwrite=False, stop_revision=None,
3058
possible_transports=None, _hook_master=None, run_hooks=True,
3059
_override_hook_target=None, local=False):
3062
:param _hook_master: Private parameter - set the branch to
3063
be supplied as the master to pull hooks.
3064
:param run_hooks: Private parameter - if false, this branch
3065
is being called because it's the master of the primary branch,
3066
so it should not run its hooks.
3067
:param _override_hook_target: Private parameter - set the branch to be
3068
supplied as the target_branch to pull hooks.
3069
:param local: Only update the local branch, and not the bound branch.
3071
# This type of branch can't be bound.
3073
raise errors.LocalRequiresBoundBranch()
3074
result = PullResult()
3075
result.source_branch = self.source
3076
if _override_hook_target is None:
3077
result.target_branch = self.target
3079
result.target_branch = _override_hook_target
3080
self.source.lock_read()
3082
# We assume that during 'pull' the target repository is closer than
3084
self.source.update_references(self.target)
3085
graph = self.target.repository.get_graph(self.source.repository)
3086
# TODO: Branch formats should have a flag that indicates
3087
# that revno's are expensive, and pull() should honor that flag.
3089
result.old_revno, result.old_revid = \
3090
self.target.last_revision_info()
3091
self.target.update_revisions(self.source, stop_revision,
3092
overwrite=overwrite, graph=graph)
3093
# TODO: The old revid should be specified when merging tags,
3094
# so a tags implementation that versions tags can only
3095
# pull in the most recent changes. -- JRV20090506
3096
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3098
result.new_revno, result.new_revid = self.target.last_revision_info()
3100
result.master_branch = _hook_master
3101
result.local_branch = result.target_branch
3103
result.master_branch = result.target_branch
3104
result.local_branch = None
3106
for hook in Branch.hooks['post_pull']:
3109
self.source.unlock()
3112
def push(self, overwrite=False, stop_revision=None,
3113
_override_hook_source_branch=None):
3114
"""See InterBranch.push.
3116
This is the basic concrete implementation of push()
3118
:param _override_hook_source_branch: If specified, run
3119
the hooks passing this Branch as the source, rather than self.
3120
This is for use of RemoteBranch, where push is delegated to the
3121
underlying vfs-based Branch.
3123
# TODO: Public option to disable running hooks - should be trivial but
3125
self.source.lock_read()
3127
return _run_with_write_locked_target(
3128
self.target, self._push_with_bound_branches, overwrite,
3130
_override_hook_source_branch=_override_hook_source_branch)
3132
self.source.unlock()
3134
def _push_with_bound_branches(self, overwrite, stop_revision,
3135
_override_hook_source_branch=None):
3136
"""Push from source into target, and into target's master if any.
3139
if _override_hook_source_branch:
3140
result.source_branch = _override_hook_source_branch
3141
for hook in Branch.hooks['post_push']:
3144
bound_location = self.target.get_bound_location()
3145
if bound_location and self.target.base != bound_location:
3146
# there is a master branch.
3148
# XXX: Why the second check? Is it even supported for a branch to
3149
# be bound to itself? -- mbp 20070507
3150
master_branch = self.target.get_master_branch()
3151
master_branch.lock_write()
3153
# push into the master from the source branch.
3154
self.source._basic_push(master_branch, overwrite, stop_revision)
3155
# and push into the target branch from the source. Note that we
3156
# push from the source branch again, because its considered the
3157
# highest bandwidth repository.
3158
result = self.source._basic_push(self.target, overwrite,
3160
result.master_branch = master_branch
3161
result.local_branch = self.target
3165
master_branch.unlock()
3168
result = self.source._basic_push(self.target, overwrite,
3170
# TODO: Why set master_branch and local_branch if there's no
3171
# binding? Maybe cleaner to just leave them unset? -- mbp
3173
result.master_branch = self.target
3174
result.local_branch = None
3179
def is_compatible(self, source, target):
3180
# GenericBranch uses the public API, so always compatible
3184
class InterToBranch5(GenericInterBranch):
3187
def _get_branch_formats_to_test():
3188
return BranchFormat._default_format, BzrBranchFormat5()
3190
def pull(self, overwrite=False, stop_revision=None,
3191
possible_transports=None, run_hooks=True,
3192
_override_hook_target=None, local=False):
3193
"""Pull from source into self, updating my master if any.
3195
:param run_hooks: Private parameter - if false, this branch
3196
is being called because it's the master of the primary branch,
3197
so it should not run its hooks.
3199
bound_location = self.target.get_bound_location()
3200
if local and not bound_location:
3201
raise errors.LocalRequiresBoundBranch()
3202
master_branch = None
3203
if not local and bound_location and self.source.base != bound_location:
3204
# not pulling from master, so we need to update master.
3205
master_branch = self.target.get_master_branch(possible_transports)
3206
master_branch.lock_write()
3209
# pull from source into master.
3210
master_branch.pull(self.source, overwrite, stop_revision,
3212
return super(InterToBranch5, self).pull(overwrite,
3213
stop_revision, _hook_master=master_branch,
3214
run_hooks=run_hooks,
3215
_override_hook_target=_override_hook_target)
3218
master_branch.unlock()
3221
InterBranch.register_optimiser(GenericInterBranch)
3222
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
