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# Copyright (C) 2005-2010 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TransportConfig
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from bzrlib.repofmt.pack_repo import RepositoryFormatKnitPack5RichRoot
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.hooks import HookPoint, Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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hooks: An instance of BranchHooks.
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# this is really an instance variable - FIXME move it there
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def __init__(self, *ignored, **ignored_too):
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self.tags = self._format.make_tags(self)
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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self._partial_revision_id_to_revno_cache = {}
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self._partial_revision_history_cache = []
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self._last_revision_info_cache = None
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self._merge_sorted_revisions_cache = None
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hooks = Branch.hooks['open']
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def _open_hook(self):
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"""Called by init to allow simpler extension of the base class."""
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def _activate_fallback_location(self, url):
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"""Activate the branch/repository from url as a fallback repository."""
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repo = self._get_fallback_repository(url)
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if repo.has_same_location(self.repository):
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raise errors.UnstackableLocationError(self.base, url)
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self.repository.add_fallback_repository(repo)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self.repository._format,
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self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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def open_containing(url, possible_transports=None):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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return control.open_branch(), relpath
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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def get_config(self):
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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master is not None:
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# return the master branch value
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except errors.BzrError, e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map and
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len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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last_key = (last_revision,)
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known_graph = self.repository.revisions.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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if direction == 'reverse':
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if direction == 'forward':
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return reversed(list(filtered))
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raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
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"""Iterate over an inclusive range of sorted revisions."""
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rev_iter = iter(merge_sorted_revisions)
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if start_revision_id is not None:
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id != start_revision_id:
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# The decision to include the start or not
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# depends on the stop_rule if a stop is provided
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# so pop this node back into the iterator
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rev_iter = chain(iter([node]), rev_iter)
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if stop_revision_id is None:
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for node in rev_iter:
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rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'exclude':
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id == stop_revision_id:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'include':
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for node in rev_iter:
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rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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if rev_id == stop_revision_id:
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elif stop_rule == 'with-merges':
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stop_rev = self.repository.get_revision(stop_revision_id)
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if stop_rev.parent_ids:
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left_parent = stop_rev.parent_ids[0]
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left_parent = _mod_revision.NULL_REVISION
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# left_parent is the actual revision we want to stop logging at,
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# since we want to show the merged revisions after the stop_rev too
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reached_stop_revision_id = False
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revision_id_whitelist = []
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id == left_parent:
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# reached the left parent after the stop_revision
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if (not reached_stop_revision_id or
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rev_id in revision_id_whitelist):
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yield (rev_id, node.merge_depth, node.revno,
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if reached_stop_revision_id or rev_id == stop_revision_id:
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# only do the merged revs of rev_id from now on
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rev = self.repository.get_revision(rev_id)
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reached_stop_revision_id = True
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revision_id_whitelist.extend(rev.parent_ids)
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raise ValueError('invalid stop_rule %r' % stop_rule)
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def leave_lock_in_place(self):
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"""Tell this branch object not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this branch object to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.dont_leave_in_place()
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def bind(self, other):
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"""Bind the local branch the other branch.
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:param other: The branch to bind to
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raise errors.UpgradeRequired(self.base)
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def set_append_revisions_only(self, enabled):
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if not self._format.supports_set_append_revisions_only():
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raise errors.UpgradeRequired(self.base)
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self.get_config().set_user_option('append_revisions_only', value,
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def set_reference_info(self, file_id, tree_path, branch_location):
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"""Set the branch location to use for a tree reference."""
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raise errors.UnsupportedOperation(self.set_reference_info, self)
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def get_reference_info(self, file_id):
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"""Get the tree_path and branch_location for a tree reference."""
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raise errors.UnsupportedOperation(self.get_reference_info, self)
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def fetch(self, from_branch, last_revision=None, pb=None):
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"""Copy revisions from from_branch into this branch.
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:param from_branch: Where to copy from.
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:param last_revision: What revision to stop at (None for at the end
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:param pb: An optional progress bar to use.
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if self.base == from_branch.base:
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symbol_versioning.warn(
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symbol_versioning.deprecated_in((1, 14, 0))
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% "pb parameter to fetch()")
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from_branch.lock_read()
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if last_revision is None:
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last_revision = from_branch.last_revision()
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last_revision = _mod_revision.ensure_null(last_revision)
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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def get_bound_location(self):
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"""Return the URL of the branch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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def get_old_bound_location(self):
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"""Return the URL of the branch we used to be bound to
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raise errors.UpgradeRequired(self.base)
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def get_commit_builder(self, parents, config=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this branch.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Optional configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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config = self.get_config()
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return self.repository.get_commit_builder(self, parents, config,
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timestamp, timezone, committer, revprops, revision_id)
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def get_master_branch(self, possible_transports=None):
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"""Return the branch we are bound to.
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:return: Either a Branch, or None
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise errors.InvalidRevisionNumber(revno)
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return self.repository.get_revision_delta(rh[revno-1])
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def get_stacked_on_url(self):
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"""Get the URL this branch is stacked against.
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:raises NotStacked: If the branch is not stacked.
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:raises UnstackableBranchFormat: If the branch does not support
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raise NotImplementedError(self.get_stacked_on_url)
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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raise NotImplementedError(self.print_file)
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def set_revision_history(self, rev_history):
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raise NotImplementedError(self.set_revision_history)
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def set_parent(self, url):
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"""See Branch.set_parent."""
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# TODO: Maybe delete old location files?
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# URLs should never be unicode, even on the local fs,
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# FIXUP this and get_parent in a future branch format bump:
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# read and rewrite the file. RBC 20060125
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if isinstance(url, unicode):
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url = url.encode('ascii')
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except UnicodeEncodeError:
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raise errors.InvalidURL(url,
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"Urls must be 7-bit ascii, "
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"use bzrlib.urlutils.escape")
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url = urlutils.relative_url(self.base, url)
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self._set_parent_location(url)
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def set_stacked_on_url(self, url):
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"""Set the URL this branch is stacked against.
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:raises UnstackableBranchFormat: If the branch does not support
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:raises UnstackableRepositoryFormat: If the repository does not support
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if not self._format.supports_stacking():
692
raise errors.UnstackableBranchFormat(self._format, self.base)
693
# XXX: Changing from one fallback repository to another does not check
694
# that all the data you need is present in the new fallback.
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# Possibly it should.
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self._check_stackable_repo()
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old_url = self.get_stacked_on_url()
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except (errors.NotStacked, errors.UnstackableBranchFormat,
701
errors.UnstackableRepositoryFormat):
705
self._activate_fallback_location(url)
706
# write this out after the repository is stacked to avoid setting a
707
# stacked config that doesn't work.
708
self._set_config_location('stacked_on_location', url)
711
"""Change a branch to be unstacked, copying data as needed.
713
Don't call this directly, use set_stacked_on_url(None).
715
pb = ui.ui_factory.nested_progress_bar()
717
pb.update("Unstacking")
718
# The basic approach here is to fetch the tip of the branch,
719
# including all available ghosts, from the existing stacked
720
# repository into a new repository object without the fallbacks.
722
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
723
# correct for CHKMap repostiories
724
old_repository = self.repository
725
if len(old_repository._fallback_repositories) != 1:
726
raise AssertionError("can't cope with fallback repositories "
727
"of %r" % (self.repository,))
728
# unlock it, including unlocking the fallback
729
old_repository.unlock()
730
old_repository.lock_read()
732
# Repositories don't offer an interface to remove fallback
733
# repositories today; take the conceptually simpler option and just
734
# reopen it. We reopen it starting from the URL so that we
735
# get a separate connection for RemoteRepositories and can
736
# stream from one of them to the other. This does mean doing
737
# separate SSH connection setup, but unstacking is not a
738
# common operation so it's tolerable.
739
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
740
new_repository = new_bzrdir.find_repository()
741
self.repository = new_repository
742
if self.repository._fallback_repositories:
743
raise AssertionError("didn't expect %r to have "
744
"fallback_repositories"
745
% (self.repository,))
746
# this is not paired with an unlock because it's just restoring
747
# the previous state; the lock's released when set_stacked_on_url
749
self.repository.lock_write()
750
# XXX: If you unstack a branch while it has a working tree
751
# with a pending merge, the pending-merged revisions will no
752
# longer be present. You can (probably) revert and remerge.
754
# XXX: This only fetches up to the tip of the repository; it
755
# doesn't bring across any tags. That's fairly consistent
756
# with how branch works, but perhaps not ideal.
757
self.repository.fetch(old_repository,
758
revision_id=self.last_revision(),
761
old_repository.unlock()
765
def _set_tags_bytes(self, bytes):
766
"""Mirror method for _get_tags_bytes.
768
:seealso: Branch._get_tags_bytes.
770
return _run_with_write_locked_target(self, self._transport.put_bytes,
773
def _cache_revision_history(self, rev_history):
774
"""Set the cached revision history to rev_history.
776
The revision_history method will use this cache to avoid regenerating
777
the revision history.
779
This API is semi-public; it only for use by subclasses, all other code
780
should consider it to be private.
782
self._revision_history_cache = rev_history
784
def _cache_revision_id_to_revno(self, revision_id_to_revno):
785
"""Set the cached revision_id => revno map to revision_id_to_revno.
787
This API is semi-public; it only for use by subclasses, all other code
788
should consider it to be private.
790
self._revision_id_to_revno_cache = revision_id_to_revno
792
def _clear_cached_state(self):
793
"""Clear any cached data on this branch, e.g. cached revision history.
795
This means the next call to revision_history will need to call
796
_gen_revision_history.
798
This API is semi-public; it only for use by subclasses, all other code
799
should consider it to be private.
801
self._revision_history_cache = None
802
self._revision_id_to_revno_cache = None
803
self._last_revision_info_cache = None
804
self._merge_sorted_revisions_cache = None
805
self._partial_revision_history_cache = []
806
self._partial_revision_id_to_revno_cache = {}
808
def _gen_revision_history(self):
809
"""Return sequence of revision hashes on to this branch.
811
Unlike revision_history, this method always regenerates or rereads the
812
revision history, i.e. it does not cache the result, so repeated calls
815
Concrete subclasses should override this instead of revision_history so
816
that subclasses do not need to deal with caching logic.
818
This API is semi-public; it only for use by subclasses, all other code
819
should consider it to be private.
821
raise NotImplementedError(self._gen_revision_history)
824
def revision_history(self):
825
"""Return sequence of revision ids on this branch.
827
This method will cache the revision history for as long as it is safe to
830
if 'evil' in debug.debug_flags:
831
mutter_callsite(3, "revision_history scales with history.")
832
if self._revision_history_cache is not None:
833
history = self._revision_history_cache
835
history = self._gen_revision_history()
836
self._cache_revision_history(history)
840
"""Return current revision number for this branch.
842
That is equivalent to the number of revisions committed to
845
return self.last_revision_info()[0]
848
"""Older format branches cannot bind or unbind."""
849
raise errors.UpgradeRequired(self.base)
851
def last_revision(self):
852
"""Return last revision id, or NULL_REVISION."""
853
return self.last_revision_info()[1]
856
def last_revision_info(self):
857
"""Return information about the last revision.
859
:return: A tuple (revno, revision_id).
861
if self._last_revision_info_cache is None:
862
self._last_revision_info_cache = self._last_revision_info()
863
return self._last_revision_info_cache
865
def _last_revision_info(self):
866
rh = self.revision_history()
869
return (revno, rh[-1])
871
return (0, _mod_revision.NULL_REVISION)
873
@deprecated_method(deprecated_in((1, 6, 0)))
874
def missing_revisions(self, other, stop_revision=None):
875
"""Return a list of new revisions that would perfectly fit.
877
If self and other have not diverged, return a list of the revisions
878
present in other, but missing from self.
880
self_history = self.revision_history()
881
self_len = len(self_history)
882
other_history = other.revision_history()
883
other_len = len(other_history)
884
common_index = min(self_len, other_len) -1
885
if common_index >= 0 and \
886
self_history[common_index] != other_history[common_index]:
887
raise errors.DivergedBranches(self, other)
889
if stop_revision is None:
890
stop_revision = other_len
892
if stop_revision > other_len:
893
raise errors.NoSuchRevision(self, stop_revision)
894
return other_history[self_len:stop_revision]
897
def update_revisions(self, other, stop_revision=None, overwrite=False,
899
"""Pull in new perfect-fit revisions.
901
:param other: Another Branch to pull from
902
:param stop_revision: Updated until the given revision
903
:param overwrite: Always set the branch pointer, rather than checking
904
to see if it is a proper descendant.
905
:param graph: A Graph object that can be used to query history
906
information. This can be None.
909
return InterBranch.get(other, self).update_revisions(stop_revision,
912
def import_last_revision_info(self, source_repo, revno, revid):
913
"""Set the last revision info, importing from another repo if necessary.
915
This is used by the bound branch code to upload a revision to
916
the master branch first before updating the tip of the local branch.
918
:param source_repo: Source repository to optionally fetch from
919
:param revno: Revision number of the new tip
920
:param revid: Revision id of the new tip
922
if not self.repository.has_same_location(source_repo):
923
self.repository.fetch(source_repo, revision_id=revid)
924
self.set_last_revision_info(revno, revid)
926
def revision_id_to_revno(self, revision_id):
927
"""Given a revision id, return its revno"""
928
if _mod_revision.is_null(revision_id):
930
history = self.revision_history()
932
return history.index(revision_id) + 1
934
raise errors.NoSuchRevision(self, revision_id)
937
def get_rev_id(self, revno, history=None):
938
"""Find the revision id of the specified revno."""
940
return _mod_revision.NULL_REVISION
941
last_revno, last_revid = self.last_revision_info()
942
if revno == last_revno:
944
if revno <= 0 or revno > last_revno:
945
raise errors.NoSuchRevision(self, revno)
946
distance_from_last = last_revno - revno
947
if len(self._partial_revision_history_cache) <= distance_from_last:
948
self._extend_partial_history(distance_from_last)
949
return self._partial_revision_history_cache[distance_from_last]
952
def pull(self, source, overwrite=False, stop_revision=None,
953
possible_transports=None, *args, **kwargs):
954
"""Mirror source into this branch.
956
This branch is considered to be 'local', having low latency.
958
:returns: PullResult instance
960
return InterBranch.get(source, self).pull(overwrite=overwrite,
961
stop_revision=stop_revision,
962
possible_transports=possible_transports, *args, **kwargs)
964
def push(self, target, overwrite=False, stop_revision=None, *args,
966
"""Mirror this branch into target.
968
This branch is considered to be 'local', having low latency.
970
return InterBranch.get(self, target).push(overwrite, stop_revision,
973
def lossy_push(self, target, stop_revision=None):
974
"""Push deltas into another branch.
976
:note: This does not, like push, retain the revision ids from
977
the source branch and will, rather than adding bzr-specific
978
metadata, push only those semantics of the revision that can be
979
natively represented by this branch' VCS.
981
:param target: Target branch
982
:param stop_revision: Revision to push, defaults to last revision.
983
:return: BranchPushResult with an extra member revidmap:
984
A dictionary mapping revision ids from the target branch
985
to new revision ids in the target branch, for each
986
revision that was pushed.
988
inter = InterBranch.get(self, target)
989
lossy_push = getattr(inter, "lossy_push", None)
990
if lossy_push is None:
991
raise errors.LossyPushToSameVCS(self, target)
992
return lossy_push(stop_revision)
994
def basis_tree(self):
995
"""Return `Tree` object for last revision."""
996
return self.repository.revision_tree(self.last_revision())
998
def get_parent(self):
999
"""Return the parent location of the branch.
1001
This is the default location for pull/missing. The usual
1002
pattern is that the user can override it by specifying a
1005
parent = self._get_parent_location()
1008
# This is an old-format absolute path to a local branch
1009
# turn it into a url
1010
if parent.startswith('/'):
1011
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1013
return urlutils.join(self.base[:-1], parent)
1014
except errors.InvalidURLJoin, e:
1015
raise errors.InaccessibleParent(parent, self.base)
1017
def _get_parent_location(self):
1018
raise NotImplementedError(self._get_parent_location)
1020
def _set_config_location(self, name, url, config=None,
1021
make_relative=False):
1023
config = self.get_config()
1027
url = urlutils.relative_url(self.base, url)
1028
config.set_user_option(name, url, warn_masked=True)
1030
def _get_config_location(self, name, config=None):
1032
config = self.get_config()
1033
location = config.get_user_option(name)
1038
def get_child_submit_format(self):
1039
"""Return the preferred format of submissions to this branch."""
1040
return self.get_config().get_user_option("child_submit_format")
1042
def get_submit_branch(self):
1043
"""Return the submit location of the branch.
1045
This is the default location for bundle. The usual
1046
pattern is that the user can override it by specifying a
1049
return self.get_config().get_user_option('submit_branch')
1051
def set_submit_branch(self, location):
1052
"""Return the submit location of the branch.
1054
This is the default location for bundle. The usual
1055
pattern is that the user can override it by specifying a
1058
self.get_config().set_user_option('submit_branch', location,
1061
def get_public_branch(self):
1062
"""Return the public location of the branch.
1064
This is used by merge directives.
1066
return self._get_config_location('public_branch')
1068
def set_public_branch(self, location):
1069
"""Return the submit location of the branch.
1071
This is the default location for bundle. The usual
1072
pattern is that the user can override it by specifying a
1075
self._set_config_location('public_branch', location)
1077
def get_push_location(self):
1078
"""Return the None or the location to push this branch to."""
1079
push_loc = self.get_config().get_user_option('push_location')
1082
def set_push_location(self, location):
1083
"""Set a new push location for this branch."""
1084
raise NotImplementedError(self.set_push_location)
1086
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1087
"""Run the post_change_branch_tip hooks."""
1088
hooks = Branch.hooks['post_change_branch_tip']
1091
new_revno, new_revid = self.last_revision_info()
1092
params = ChangeBranchTipParams(
1093
self, old_revno, new_revno, old_revid, new_revid)
1097
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1098
"""Run the pre_change_branch_tip hooks."""
1099
hooks = Branch.hooks['pre_change_branch_tip']
1102
old_revno, old_revid = self.last_revision_info()
1103
params = ChangeBranchTipParams(
1104
self, old_revno, new_revno, old_revid, new_revid)
1110
"""Synchronise this branch with the master branch if any.
1112
:return: None or the last_revision pivoted out during the update.
1116
def check_revno(self, revno):
1118
Check whether a revno corresponds to any revision.
1119
Zero (the NULL revision) is considered valid.
1122
self.check_real_revno(revno)
1124
def check_real_revno(self, revno):
1126
Check whether a revno corresponds to a real revision.
1127
Zero (the NULL revision) is considered invalid
1129
if revno < 1 or revno > self.revno():
1130
raise errors.InvalidRevisionNumber(revno)
1133
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
1134
"""Clone this branch into to_bzrdir preserving all semantic values.
1136
Most API users will want 'create_clone_on_transport', which creates a
1137
new bzrdir and branch on the fly.
1139
revision_id: if not None, the revision history in the new branch will
1140
be truncated to end with revision_id.
1142
result = to_bzrdir.create_branch()
1145
if repository_policy is not None:
1146
repository_policy.configure_branch(result)
1147
self.copy_content_into(result, revision_id=revision_id)
1153
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
1154
"""Create a new line of development from the branch, into to_bzrdir.
1156
to_bzrdir controls the branch format.
1158
revision_id: if not None, the revision history in the new branch will
1159
be truncated to end with revision_id.
1161
if (repository_policy is not None and
1162
repository_policy.requires_stacking()):
1163
to_bzrdir._format.require_stacking(_skip_repo=True)
1164
result = to_bzrdir.create_branch()
1167
if repository_policy is not None:
1168
repository_policy.configure_branch(result)
1169
self.copy_content_into(result, revision_id=revision_id)
1170
result.set_parent(self.bzrdir.root_transport.base)
1175
def _synchronize_history(self, destination, revision_id):
1176
"""Synchronize last revision and revision history between branches.
1178
This version is most efficient when the destination is also a
1179
BzrBranch6, but works for BzrBranch5, as long as the destination's
1180
repository contains all the lefthand ancestors of the intended
1181
last_revision. If not, set_last_revision_info will fail.
1183
:param destination: The branch to copy the history into
1184
:param revision_id: The revision-id to truncate history at. May
1185
be None to copy complete history.
1187
source_revno, source_revision_id = self.last_revision_info()
1188
if revision_id is None:
1189
revno, revision_id = source_revno, source_revision_id
1191
graph = self.repository.get_graph()
1193
revno = graph.find_distance_to_null(revision_id,
1194
[(source_revision_id, source_revno)])
1195
except errors.GhostRevisionsHaveNoRevno:
1196
# Default to 1, if we can't find anything else
1198
destination.set_last_revision_info(revno, revision_id)
1201
def copy_content_into(self, destination, revision_id=None):
1202
"""Copy the content of self into destination.
1204
revision_id: if not None, the revision history in the new branch will
1205
be truncated to end with revision_id.
1207
self.update_references(destination)
1208
self._synchronize_history(destination, revision_id)
1210
parent = self.get_parent()
1211
except errors.InaccessibleParent, e:
1212
mutter('parent was not accessible to copy: %s', e)
1215
destination.set_parent(parent)
1216
if self._push_should_merge_tags():
1217
self.tags.merge_to(destination.tags)
1219
def update_references(self, target):
1220
if not getattr(self._format, 'supports_reference_locations', False):
1222
reference_dict = self._get_all_reference_info()
1223
if len(reference_dict) == 0:
1225
old_base = self.base
1226
new_base = target.base
1227
target_reference_dict = target._get_all_reference_info()
1228
for file_id, (tree_path, branch_location) in (
1229
reference_dict.items()):
1230
branch_location = urlutils.rebase_url(branch_location,
1232
target_reference_dict.setdefault(
1233
file_id, (tree_path, branch_location))
1234
target._set_all_reference_info(target_reference_dict)
1237
def check(self, refs):
1238
"""Check consistency of the branch.
1240
In particular this checks that revisions given in the revision-history
1241
do actually match up in the revision graph, and that they're all
1242
present in the repository.
1244
Callers will typically also want to check the repository.
1246
:param refs: Calculated refs for this branch as specified by
1247
branch._get_check_refs()
1248
:return: A BranchCheckResult.
1250
result = BranchCheckResult(self)
1251
last_revno, last_revision_id = self.last_revision_info()
1252
actual_revno = refs[('lefthand-distance', last_revision_id)]
1253
if actual_revno != last_revno:
1254
result.errors.append(errors.BzrCheckError(
1255
'revno does not match len(mainline) %s != %s' % (
1256
last_revno, actual_revno)))
1257
# TODO: We should probably also check that self.revision_history
1258
# matches the repository for older branch formats.
1259
# If looking for the code that cross-checks repository parents against
1260
# the iter_reverse_revision_history output, that is now a repository
1264
def _get_checkout_format(self):
1265
"""Return the most suitable metadir for a checkout of this branch.
1266
Weaves are used if this branch's repository uses weaves.
1268
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1269
from bzrlib.repofmt import weaverepo
1270
format = bzrdir.BzrDirMetaFormat1()
1271
format.repository_format = weaverepo.RepositoryFormat7()
1273
format = self.repository.bzrdir.checkout_metadir()
1274
format.set_branch_format(self._format)
1277
def create_clone_on_transport(self, to_transport, revision_id=None,
1278
stacked_on=None, create_prefix=False, use_existing_dir=False):
1279
"""Create a clone of this branch and its bzrdir.
1281
:param to_transport: The transport to clone onto.
1282
:param revision_id: The revision id to use as tip in the new branch.
1283
If None the tip is obtained from this branch.
1284
:param stacked_on: An optional URL to stack the clone on.
1285
:param create_prefix: Create any missing directories leading up to
1287
:param use_existing_dir: Use an existing directory if one exists.
1289
# XXX: Fix the bzrdir API to allow getting the branch back from the
1290
# clone call. Or something. 20090224 RBC/spiv.
1291
if revision_id is None:
1292
revision_id = self.last_revision()
1293
dir_to = self.bzrdir.clone_on_transport(to_transport,
1294
revision_id=revision_id, stacked_on=stacked_on,
1295
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1296
return dir_to.open_branch()
1298
def create_checkout(self, to_location, revision_id=None,
1299
lightweight=False, accelerator_tree=None,
1301
"""Create a checkout of a branch.
1303
:param to_location: The url to produce the checkout at
1304
:param revision_id: The revision to check out
1305
:param lightweight: If True, produce a lightweight checkout, otherwise,
1306
produce a bound branch (heavyweight checkout)
1307
:param accelerator_tree: A tree which can be used for retrieving file
1308
contents more quickly than the revision tree, i.e. a workingtree.
1309
The revision tree will be used for cases where accelerator_tree's
1310
content is different.
1311
:param hardlink: If true, hard-link files from accelerator_tree,
1313
:return: The tree of the created checkout
1315
t = transport.get_transport(to_location)
1318
format = self._get_checkout_format()
1319
checkout = format.initialize_on_transport(t)
1320
from_branch = BranchReferenceFormat().initialize(checkout,
1323
format = self._get_checkout_format()
1324
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1325
to_location, force_new_tree=False, format=format)
1326
checkout = checkout_branch.bzrdir
1327
checkout_branch.bind(self)
1328
# pull up to the specified revision_id to set the initial
1329
# branch tip correctly, and seed it with history.
1330
checkout_branch.pull(self, stop_revision=revision_id)
1332
tree = checkout.create_workingtree(revision_id,
1333
from_branch=from_branch,
1334
accelerator_tree=accelerator_tree,
1336
basis_tree = tree.basis_tree()
1337
basis_tree.lock_read()
1339
for path, file_id in basis_tree.iter_references():
1340
reference_parent = self.reference_parent(file_id, path)
1341
reference_parent.create_checkout(tree.abspath(path),
1342
basis_tree.get_reference_revision(file_id, path),
1349
def reconcile(self, thorough=True):
1350
"""Make sure the data stored in this branch is consistent."""
1351
from bzrlib.reconcile import BranchReconciler
1352
reconciler = BranchReconciler(self, thorough=thorough)
1353
reconciler.reconcile()
1356
def reference_parent(self, file_id, path, possible_transports=None):
1357
"""Return the parent branch for a tree-reference file_id
1358
:param file_id: The file_id of the tree reference
1359
:param path: The path of the file_id in the tree
1360
:return: A branch associated with the file_id
1362
# FIXME should provide multiple branches, based on config
1363
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1364
possible_transports=possible_transports)
1366
def supports_tags(self):
1367
return self._format.supports_tags()
1369
def automatic_tag_name(self, revision_id):
1370
"""Try to automatically find the tag name for a revision.
1372
:param revision_id: Revision id of the revision.
1373
:return: A tag name or None if no tag name could be determined.
1375
for hook in Branch.hooks['automatic_tag_name']:
1376
ret = hook(self, revision_id)
1381
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1383
"""Ensure that revision_b is a descendant of revision_a.
1385
This is a helper function for update_revisions.
1387
:raises: DivergedBranches if revision_b has diverged from revision_a.
1388
:returns: True if revision_b is a descendant of revision_a.
1390
relation = self._revision_relations(revision_a, revision_b, graph)
1391
if relation == 'b_descends_from_a':
1393
elif relation == 'diverged':
1394
raise errors.DivergedBranches(self, other_branch)
1395
elif relation == 'a_descends_from_b':
1398
raise AssertionError("invalid relation: %r" % (relation,))
1400
def _revision_relations(self, revision_a, revision_b, graph):
1401
"""Determine the relationship between two revisions.
1403
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1405
heads = graph.heads([revision_a, revision_b])
1406
if heads == set([revision_b]):
1407
return 'b_descends_from_a'
1408
elif heads == set([revision_a, revision_b]):
1409
# These branches have diverged
1411
elif heads == set([revision_a]):
1412
return 'a_descends_from_b'
1414
raise AssertionError("invalid heads: %r" % (heads,))
1417
class BranchFormat(object):
1418
"""An encapsulation of the initialization and open routines for a format.
1420
Formats provide three things:
1421
* An initialization routine,
1425
Formats are placed in an dict by their format string for reference
1426
during branch opening. Its not required that these be instances, they
1427
can be classes themselves with class methods - it simply depends on
1428
whether state is needed for a given format or not.
1430
Once a format is deprecated, just deprecate the initialize and open
1431
methods on the format class. Do not deprecate the object, as the
1432
object will be created every time regardless.
1435
_default_format = None
1436
"""The default format used for new branches."""
1439
"""The known formats."""
1441
can_set_append_revisions_only = True
1443
def __eq__(self, other):
1444
return self.__class__ is other.__class__
1446
def __ne__(self, other):
1447
return not (self == other)
1450
def find_format(klass, a_bzrdir, name=None):
1451
"""Return the format for the branch object in a_bzrdir."""
1453
transport = a_bzrdir.get_branch_transport(None, name=name)
1454
format_string = transport.get_bytes("format")
1455
return klass._formats[format_string]
1456
except errors.NoSuchFile:
1457
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1459
raise errors.UnknownFormatError(format=format_string, kind='branch')
1462
def get_default_format(klass):
1463
"""Return the current default format."""
1464
return klass._default_format
1466
def get_reference(self, a_bzrdir):
1467
"""Get 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 get the branch data from.
1474
:return: None if the branch is not a reference branch.
1479
def set_reference(self, a_bzrdir, to_branch):
1480
"""Set the target reference of the branch in a_bzrdir.
1482
format probing must have been completed before calling
1483
this method - it is assumed that the format of the branch
1484
in a_bzrdir is correct.
1486
:param a_bzrdir: The bzrdir to set the branch reference for.
1487
:param to_branch: branch that the checkout is to reference
1489
raise NotImplementedError(self.set_reference)
1491
def get_format_string(self):
1492
"""Return the ASCII format string that identifies this format."""
1493
raise NotImplementedError(self.get_format_string)
1495
def get_format_description(self):
1496
"""Return the short format description for this format."""
1497
raise NotImplementedError(self.get_format_description)
1499
def _run_post_branch_init_hooks(self, a_bzrdir, name, branch):
1500
hooks = Branch.hooks['post_branch_init']
1503
params = BranchInitHookParams(self, a_bzrdir, name, branch)
1507
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1508
lock_type='metadir', set_format=True):
1509
"""Initialize a branch in a bzrdir, with specified files
1511
:param a_bzrdir: The bzrdir to initialize the branch in
1512
:param utf8_files: The files to create as a list of
1513
(filename, content) tuples
1514
:param name: Name of colocated branch to create, if any
1515
:param set_format: If True, set the format with
1516
self.get_format_string. (BzrBranch4 has its format set
1518
:return: a branch in this format
1520
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
1521
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1523
'metadir': ('lock', lockdir.LockDir),
1524
'branch4': ('branch-lock', lockable_files.TransportLock),
1526
lock_name, lock_class = lock_map[lock_type]
1527
control_files = lockable_files.LockableFiles(branch_transport,
1528
lock_name, lock_class)
1529
control_files.create_lock()
1531
control_files.lock_write()
1532
except errors.LockContention:
1533
if lock_type != 'branch4':
1539
utf8_files += [('format', self.get_format_string())]
1541
for (filename, content) in utf8_files:
1542
branch_transport.put_bytes(
1544
mode=a_bzrdir._get_file_mode())
1547
control_files.unlock()
1548
branch = self.open(a_bzrdir, name, _found=True)
1549
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1552
def initialize(self, a_bzrdir, name=None):
1553
"""Create a branch of this format in a_bzrdir.
1555
:param name: Name of the colocated branch to create.
1557
raise NotImplementedError(self.initialize)
1559
def is_supported(self):
1560
"""Is this format supported?
1562
Supported formats can be initialized and opened.
1563
Unsupported formats may not support initialization or committing or
1564
some other features depending on the reason for not being supported.
1568
def make_tags(self, branch):
1569
"""Create a tags object for branch.
1571
This method is on BranchFormat, because BranchFormats are reflected
1572
over the wire via network_name(), whereas full Branch instances require
1573
multiple VFS method calls to operate at all.
1575
The default implementation returns a disabled-tags instance.
1577
Note that it is normal for branch to be a RemoteBranch when using tags
1580
return DisabledTags(branch)
1582
def network_name(self):
1583
"""A simple byte string uniquely identifying this format for RPC calls.
1585
MetaDir branch formats use their disk format string to identify the
1586
repository over the wire. All in one formats such as bzr < 0.8, and
1587
foreign formats like svn/git and hg should use some marker which is
1588
unique and immutable.
1590
raise NotImplementedError(self.network_name)
1592
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1593
"""Return the branch object for a_bzrdir
1595
:param a_bzrdir: A BzrDir that contains a branch.
1596
:param name: Name of colocated branch to open
1597
:param _found: a private parameter, do not use it. It is used to
1598
indicate if format probing has already be done.
1599
:param ignore_fallbacks: when set, no fallback branches will be opened
1600
(if there are any). Default is to open fallbacks.
1602
raise NotImplementedError(self.open)
1605
def register_format(klass, format):
1606
"""Register a metadir format."""
1607
klass._formats[format.get_format_string()] = format
1608
# Metadir formats have a network name of their format string, and get
1609
# registered as class factories.
1610
network_format_registry.register(format.get_format_string(), format.__class__)
1613
def set_default_format(klass, format):
1614
klass._default_format = format
1616
def supports_set_append_revisions_only(self):
1617
"""True if this format supports set_append_revisions_only."""
1620
def supports_stacking(self):
1621
"""True if this format records a stacked-on branch."""
1625
def unregister_format(klass, format):
1626
del klass._formats[format.get_format_string()]
1629
return self.get_format_description().rstrip()
1631
def supports_tags(self):
1632
"""True if this format supports tags stored in the branch"""
1633
return False # by default
1636
class BranchHooks(Hooks):
1637
"""A dictionary mapping hook name to a list of callables for branch hooks.
1639
e.g. ['set_rh'] Is the list of items to be called when the
1640
set_revision_history function is invoked.
1644
"""Create the default hooks.
1646
These are all empty initially, because by default nothing should get
1649
Hooks.__init__(self)
1650
self.create_hook(HookPoint('set_rh',
1651
"Invoked whenever the revision history has been set via "
1652
"set_revision_history. The api signature is (branch, "
1653
"revision_history), and the branch will be write-locked. "
1654
"The set_rh hook can be expensive for bzr to trigger, a better "
1655
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1656
self.create_hook(HookPoint('open',
1657
"Called with the Branch object that has been opened after a "
1658
"branch is opened.", (1, 8), None))
1659
self.create_hook(HookPoint('post_push',
1660
"Called after a push operation completes. post_push is called "
1661
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1662
"bzr client.", (0, 15), None))
1663
self.create_hook(HookPoint('post_pull',
1664
"Called after a pull operation completes. post_pull is called "
1665
"with a bzrlib.branch.PullResult object and only runs in the "
1666
"bzr client.", (0, 15), None))
1667
self.create_hook(HookPoint('pre_commit',
1668
"Called after a commit is calculated but before it is is "
1669
"completed. pre_commit is called with (local, master, old_revno, "
1670
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1671
"). old_revid is NULL_REVISION for the first commit to a branch, "
1672
"tree_delta is a TreeDelta object describing changes from the "
1673
"basis revision. hooks MUST NOT modify this delta. "
1674
" future_tree is an in-memory tree obtained from "
1675
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1676
"tree.", (0,91), None))
1677
self.create_hook(HookPoint('post_commit',
1678
"Called in the bzr client after a commit has completed. "
1679
"post_commit is called with (local, master, old_revno, old_revid, "
1680
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1681
"commit to a branch.", (0, 15), None))
1682
self.create_hook(HookPoint('post_uncommit',
1683
"Called in the bzr client after an uncommit completes. "
1684
"post_uncommit is called with (local, master, old_revno, "
1685
"old_revid, new_revno, new_revid) where local is the local branch "
1686
"or None, master is the target branch, and an empty branch "
1687
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1688
self.create_hook(HookPoint('pre_change_branch_tip',
1689
"Called in bzr client and server before a change to the tip of a "
1690
"branch is made. pre_change_branch_tip is called with a "
1691
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1692
"commit, uncommit will all trigger this hook.", (1, 6), None))
1693
self.create_hook(HookPoint('post_change_branch_tip',
1694
"Called in bzr client and server after a change to the tip of a "
1695
"branch is made. post_change_branch_tip is called with a "
1696
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1697
"commit, uncommit will all trigger this hook.", (1, 4), None))
1698
self.create_hook(HookPoint('transform_fallback_location',
1699
"Called when a stacked branch is activating its fallback "
1700
"locations. transform_fallback_location is called with (branch, "
1701
"url), and should return a new url. Returning the same url "
1702
"allows it to be used as-is, returning a different one can be "
1703
"used to cause the branch to stack on a closer copy of that "
1704
"fallback_location. Note that the branch cannot have history "
1705
"accessing methods called on it during this hook because the "
1706
"fallback locations have not been activated. When there are "
1707
"multiple hooks installed for transform_fallback_location, "
1708
"all are called with the url returned from the previous hook."
1709
"The order is however undefined.", (1, 9), None))
1710
self.create_hook(HookPoint('automatic_tag_name',
1711
"Called to determine an automatic tag name for a revision."
1712
"automatic_tag_name is called with (branch, revision_id) and "
1713
"should return a tag name or None if no tag name could be "
1714
"determined. The first non-None tag name returned will be used.",
1716
self.create_hook(HookPoint('post_branch_init',
1717
"Called after new branch initialization completes. "
1718
"post_branch_init is called with a "
1719
"bzrlib.branch.BranchInitHookParams. "
1720
"Note that init, branch and checkout (both heavyweight and "
1721
"lightweight) will all trigger this hook.", (2, 2), None))
1722
self.create_hook(HookPoint('post_switch',
1723
"Called after a checkout switches branch. "
1724
"post_switch is called with a "
1725
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1729
# install the default hooks into the Branch class.
1730
Branch.hooks = BranchHooks()
1733
class ChangeBranchTipParams(object):
1734
"""Object holding parameters passed to *_change_branch_tip hooks.
1736
There are 5 fields that hooks may wish to access:
1738
:ivar branch: the branch being changed
1739
:ivar old_revno: revision number before the change
1740
:ivar new_revno: revision number after the change
1741
:ivar old_revid: revision id before the change
1742
:ivar new_revid: revision id after the change
1744
The revid fields are strings. The revno fields are integers.
1747
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1748
"""Create a group of ChangeBranchTip parameters.
1750
:param branch: The branch being changed.
1751
:param old_revno: Revision number before the change.
1752
:param new_revno: Revision number after the change.
1753
:param old_revid: Tip revision id before the change.
1754
:param new_revid: Tip revision id after the change.
1756
self.branch = branch
1757
self.old_revno = old_revno
1758
self.new_revno = new_revno
1759
self.old_revid = old_revid
1760
self.new_revid = new_revid
1762
def __eq__(self, other):
1763
return self.__dict__ == other.__dict__
1766
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1767
self.__class__.__name__, self.branch,
1768
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1771
class BranchInitHookParams(object):
1772
"""Object holding parameters passed to *_branch_init hooks.
1774
There are 4 fields that hooks may wish to access:
1776
:ivar format: the branch format
1777
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1778
:ivar name: name of colocated branch, if any (or None)
1779
:ivar branch: the branch created
1781
Note that for lightweight checkouts, the bzrdir and format fields refer to
1782
the checkout, hence they are different from the corresponding fields in
1783
branch, which refer to the original branch.
1786
def __init__(self, format, a_bzrdir, name, branch):
1787
"""Create a group of BranchInitHook parameters.
1789
:param format: the branch format
1790
:param a_bzrdir: the BzrDir where the branch will be/has been
1792
:param name: name of colocated branch, if any (or None)
1793
:param branch: the branch created
1795
Note that for lightweight checkouts, the bzrdir and format fields refer
1796
to the checkout, hence they are different from the corresponding fields
1797
in branch, which refer to the original branch.
1799
self.format = format
1800
self.bzrdir = a_bzrdir
1802
self.branch = branch
1804
def __eq__(self, other):
1805
return self.__dict__ == other.__dict__
1809
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1811
return "<%s of format:%s bzrdir:%s>" % (
1812
self.__class__.__name__, self.branch,
1813
self.format, self.bzrdir)
1816
class SwitchHookParams(object):
1817
"""Object holding parameters passed to *_switch hooks.
1819
There are 4 fields that hooks may wish to access:
1821
:ivar control_dir: BzrDir of the checkout to change
1822
:ivar to_branch: branch that the checkout is to reference
1823
:ivar force: skip the check for local commits in a heavy checkout
1824
:ivar revision_id: revision ID to switch to (or None)
1827
def __init__(self, control_dir, to_branch, force, revision_id):
1828
"""Create a group of SwitchHook parameters.
1830
:param control_dir: BzrDir of the checkout to change
1831
:param to_branch: branch that the checkout is to reference
1832
:param force: skip the check for local commits in a heavy checkout
1833
:param revision_id: revision ID to switch to (or None)
1835
self.control_dir = control_dir
1836
self.to_branch = to_branch
1838
self.revision_id = revision_id
1840
def __eq__(self, other):
1841
return self.__dict__ == other.__dict__
1844
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1845
self.control_dir, self.to_branch,
1849
class BzrBranchFormat4(BranchFormat):
1850
"""Bzr branch format 4.
1853
- a revision-history file.
1854
- a branch-lock lock file [ to be shared with the bzrdir ]
1857
def get_format_description(self):
1858
"""See BranchFormat.get_format_description()."""
1859
return "Branch format 4"
1861
def initialize(self, a_bzrdir, name=None):
1862
"""Create a branch of this format in a_bzrdir."""
1863
utf8_files = [('revision-history', ''),
1864
('branch-name', ''),
1866
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1867
lock_type='branch4', set_format=False)
1870
super(BzrBranchFormat4, self).__init__()
1871
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1873
def network_name(self):
1874
"""The network name for this format is the control dirs disk label."""
1875
return self._matchingbzrdir.get_format_string()
1877
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1878
"""See BranchFormat.open()."""
1880
# we are being called directly and must probe.
1881
raise NotImplementedError
1882
return BzrBranch(_format=self,
1883
_control_files=a_bzrdir._control_files,
1886
_repository=a_bzrdir.open_repository())
1889
return "Bazaar-NG branch format 4"
1892
class BranchFormatMetadir(BranchFormat):
1893
"""Common logic for meta-dir based branch formats."""
1895
def _branch_class(self):
1896
"""What class to instantiate on open calls."""
1897
raise NotImplementedError(self._branch_class)
1899
def network_name(self):
1900
"""A simple byte string uniquely identifying this format for RPC calls.
1902
Metadir branch formats use their format string.
1904
return self.get_format_string()
1906
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1907
"""See BranchFormat.open()."""
1909
format = BranchFormat.find_format(a_bzrdir, name=name)
1910
if format.__class__ != self.__class__:
1911
raise AssertionError("wrong format %r found for %r" %
1914
transport = a_bzrdir.get_branch_transport(None, name=name)
1915
control_files = lockable_files.LockableFiles(transport, 'lock',
1917
return self._branch_class()(_format=self,
1918
_control_files=control_files,
1921
_repository=a_bzrdir.find_repository(),
1922
ignore_fallbacks=ignore_fallbacks)
1923
except errors.NoSuchFile:
1924
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1927
super(BranchFormatMetadir, self).__init__()
1928
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1929
self._matchingbzrdir.set_branch_format(self)
1931
def supports_tags(self):
1935
class BzrBranchFormat5(BranchFormatMetadir):
1936
"""Bzr branch format 5.
1939
- a revision-history file.
1941
- a lock dir guarding the branch itself
1942
- all of this stored in a branch/ subdirectory
1943
- works with shared repositories.
1945
This format is new in bzr 0.8.
1948
def _branch_class(self):
1951
def get_format_string(self):
1952
"""See BranchFormat.get_format_string()."""
1953
return "Bazaar-NG branch format 5\n"
1955
def get_format_description(self):
1956
"""See BranchFormat.get_format_description()."""
1957
return "Branch format 5"
1959
def initialize(self, a_bzrdir, name=None):
1960
"""Create a branch of this format in a_bzrdir."""
1961
utf8_files = [('revision-history', ''),
1962
('branch-name', ''),
1964
return self._initialize_helper(a_bzrdir, utf8_files, name)
1966
def supports_tags(self):
1970
class BzrBranchFormat6(BranchFormatMetadir):
1971
"""Branch format with last-revision and tags.
1973
Unlike previous formats, this has no explicit revision history. Instead,
1974
this just stores the last-revision, and the left-hand history leading
1975
up to there is the history.
1977
This format was introduced in bzr 0.15
1978
and became the default in 0.91.
1981
def _branch_class(self):
1984
def get_format_string(self):
1985
"""See BranchFormat.get_format_string()."""
1986
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1988
def get_format_description(self):
1989
"""See BranchFormat.get_format_description()."""
1990
return "Branch format 6"
1992
def initialize(self, a_bzrdir, name=None):
1993
"""Create a branch of this format in a_bzrdir."""
1994
utf8_files = [('last-revision', '0 null:\n'),
1995
('branch.conf', ''),
1998
return self._initialize_helper(a_bzrdir, utf8_files, name)
2000
def make_tags(self, branch):
2001
"""See bzrlib.branch.BranchFormat.make_tags()."""
2002
return BasicTags(branch)
2004
def supports_set_append_revisions_only(self):
2008
class BzrBranchFormat8(BranchFormatMetadir):
2009
"""Metadir format supporting storing locations of subtree branches."""
2011
def _branch_class(self):
2014
def get_format_string(self):
2015
"""See BranchFormat.get_format_string()."""
2016
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2018
def get_format_description(self):
2019
"""See BranchFormat.get_format_description()."""
2020
return "Branch format 8"
2022
def initialize(self, a_bzrdir, name=None):
2023
"""Create a branch of this format in a_bzrdir."""
2024
utf8_files = [('last-revision', '0 null:\n'),
2025
('branch.conf', ''),
2029
return self._initialize_helper(a_bzrdir, utf8_files, name)
2032
super(BzrBranchFormat8, self).__init__()
2033
self._matchingbzrdir.repository_format = \
2034
RepositoryFormatKnitPack5RichRoot()
2036
def make_tags(self, branch):
2037
"""See bzrlib.branch.BranchFormat.make_tags()."""
2038
return BasicTags(branch)
2040
def supports_set_append_revisions_only(self):
2043
def supports_stacking(self):
2046
supports_reference_locations = True
2049
class BzrBranchFormat7(BzrBranchFormat8):
2050
"""Branch format with last-revision, tags, and a stacked location pointer.
2052
The stacked location pointer is passed down to the repository and requires
2053
a repository format with supports_external_lookups = True.
2055
This format was introduced in bzr 1.6.
2058
def initialize(self, a_bzrdir, name=None):
2059
"""Create a branch of this format in a_bzrdir."""
2060
utf8_files = [('last-revision', '0 null:\n'),
2061
('branch.conf', ''),
2064
return self._initialize_helper(a_bzrdir, utf8_files, name)
2066
def _branch_class(self):
2069
def get_format_string(self):
2070
"""See BranchFormat.get_format_string()."""
2071
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2073
def get_format_description(self):
2074
"""See BranchFormat.get_format_description()."""
2075
return "Branch format 7"
2077
def supports_set_append_revisions_only(self):
2080
supports_reference_locations = False
2083
class BranchReferenceFormat(BranchFormat):
2084
"""Bzr branch reference format.
2086
Branch references are used in implementing checkouts, they
2087
act as an alias to the real branch which is at some other url.
2094
def get_format_string(self):
2095
"""See BranchFormat.get_format_string()."""
2096
return "Bazaar-NG Branch Reference Format 1\n"
2098
def get_format_description(self):
2099
"""See BranchFormat.get_format_description()."""
2100
return "Checkout reference format 1"
2102
def get_reference(self, a_bzrdir):
2103
"""See BranchFormat.get_reference()."""
2104
transport = a_bzrdir.get_branch_transport(None)
2105
return transport.get_bytes('location')
2107
def set_reference(self, a_bzrdir, to_branch):
2108
"""See BranchFormat.set_reference()."""
2109
transport = a_bzrdir.get_branch_transport(None)
2110
location = transport.put_bytes('location', to_branch.base)
2112
def initialize(self, a_bzrdir, name=None, target_branch=None):
2113
"""Create a branch of this format in a_bzrdir."""
2114
if target_branch is None:
2115
# this format does not implement branch itself, thus the implicit
2116
# creation contract must see it as uninitializable
2117
raise errors.UninitializableFormat(self)
2118
mutter('creating branch reference in %s', a_bzrdir.transport.base)
2119
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
2120
branch_transport.put_bytes('location',
2121
target_branch.bzrdir.root_transport.base)
2122
branch_transport.put_bytes('format', self.get_format_string())
2124
a_bzrdir, name, _found=True,
2125
possible_transports=[target_branch.bzrdir.root_transport])
2126
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
2130
super(BranchReferenceFormat, self).__init__()
2131
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2132
self._matchingbzrdir.set_branch_format(self)
2134
def _make_reference_clone_function(format, a_branch):
2135
"""Create a clone() routine for a branch dynamically."""
2136
def clone(to_bzrdir, revision_id=None,
2137
repository_policy=None):
2138
"""See Branch.clone()."""
2139
return format.initialize(to_bzrdir, target_branch=a_branch)
2140
# cannot obey revision_id limits when cloning a reference ...
2141
# FIXME RBC 20060210 either nuke revision_id for clone, or
2142
# emit some sort of warning/error to the caller ?!
2145
def open(self, a_bzrdir, name=None, _found=False, location=None,
2146
possible_transports=None, ignore_fallbacks=False):
2147
"""Return the branch that the branch reference in a_bzrdir points at.
2149
:param a_bzrdir: A BzrDir that contains a branch.
2150
:param name: Name of colocated branch to open, if any
2151
:param _found: a private parameter, do not use it. It is used to
2152
indicate if format probing has already be done.
2153
:param ignore_fallbacks: when set, no fallback branches will be opened
2154
(if there are any). Default is to open fallbacks.
2155
:param location: The location of the referenced branch. If
2156
unspecified, this will be determined from the branch reference in
2158
:param possible_transports: An optional reusable transports list.
2161
format = BranchFormat.find_format(a_bzrdir, name=name)
2162
if format.__class__ != self.__class__:
2163
raise AssertionError("wrong format %r found for %r" %
2165
if location is None:
2166
location = self.get_reference(a_bzrdir)
2167
real_bzrdir = bzrdir.BzrDir.open(
2168
location, possible_transports=possible_transports)
2169
result = real_bzrdir.open_branch(name=name,
2170
ignore_fallbacks=ignore_fallbacks)
2171
# this changes the behaviour of result.clone to create a new reference
2172
# rather than a copy of the content of the branch.
2173
# I did not use a proxy object because that needs much more extensive
2174
# testing, and we are only changing one behaviour at the moment.
2175
# If we decide to alter more behaviours - i.e. the implicit nickname
2176
# then this should be refactored to introduce a tested proxy branch
2177
# and a subclass of that for use in overriding clone() and ....
2179
result.clone = self._make_reference_clone_function(result)
2183
network_format_registry = registry.FormatRegistry()
2184
"""Registry of formats indexed by their network name.
2186
The network name for a branch format is an identifier that can be used when
2187
referring to formats with smart server operations. See
2188
BranchFormat.network_name() for more detail.
2192
# formats which have no format string are not discoverable
2193
# and not independently creatable, so are not registered.
2194
__format5 = BzrBranchFormat5()
2195
__format6 = BzrBranchFormat6()
2196
__format7 = BzrBranchFormat7()
2197
__format8 = BzrBranchFormat8()
2198
BranchFormat.register_format(__format5)
2199
BranchFormat.register_format(BranchReferenceFormat())
2200
BranchFormat.register_format(__format6)
2201
BranchFormat.register_format(__format7)
2202
BranchFormat.register_format(__format8)
2203
BranchFormat.set_default_format(__format7)
2204
_legacy_formats = [BzrBranchFormat4(),
2206
network_format_registry.register(
2207
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2210
class BzrBranch(Branch, _RelockDebugMixin):
2211
"""A branch stored in the actual filesystem.
2213
Note that it's "local" in the context of the filesystem; it doesn't
2214
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2215
it's writable, and can be accessed via the normal filesystem API.
2217
:ivar _transport: Transport for file operations on this branch's
2218
control files, typically pointing to the .bzr/branch directory.
2219
:ivar repository: Repository for this branch.
2220
:ivar base: The url of the base directory for this branch; the one
2221
containing the .bzr directory.
2222
:ivar name: Optional colocated branch name as it exists in the control
2226
def __init__(self, _format=None,
2227
_control_files=None, a_bzrdir=None, name=None,
2228
_repository=None, ignore_fallbacks=False):
2229
"""Create new branch object at a particular location."""
2230
if a_bzrdir is None:
2231
raise ValueError('a_bzrdir must be supplied')
2233
self.bzrdir = a_bzrdir
2234
self._base = self.bzrdir.transport.clone('..').base
2236
# XXX: We should be able to just do
2237
# self.base = self.bzrdir.root_transport.base
2238
# but this does not quite work yet -- mbp 20080522
2239
self._format = _format
2240
if _control_files is None:
2241
raise ValueError('BzrBranch _control_files is None')
2242
self.control_files = _control_files
2243
self._transport = _control_files._transport
2244
self.repository = _repository
2245
Branch.__init__(self)
2248
if self.name is None:
2249
return '%s(%r)' % (self.__class__.__name__, self.base)
2251
return '%s(%r,%r)' % (self.__class__.__name__, self.base, self.name)
2255
def _get_base(self):
2256
"""Returns the directory containing the control directory."""
2259
base = property(_get_base, doc="The URL for the root of this branch.")
2261
def _get_config(self):
2262
return TransportConfig(self._transport, 'branch.conf')
2264
def is_locked(self):
2265
return self.control_files.is_locked()
2267
def lock_write(self, token=None):
2268
if not self.is_locked():
2269
self._note_lock('w')
2270
# All-in-one needs to always unlock/lock.
2271
repo_control = getattr(self.repository, 'control_files', None)
2272
if self.control_files == repo_control or not self.is_locked():
2273
self.repository._warn_if_deprecated(self)
2274
self.repository.lock_write()
2279
return self.control_files.lock_write(token=token)
2282
self.repository.unlock()
2285
def lock_read(self):
2286
if not self.is_locked():
2287
self._note_lock('r')
2288
# All-in-one needs to always unlock/lock.
2289
repo_control = getattr(self.repository, 'control_files', None)
2290
if self.control_files == repo_control or not self.is_locked():
2291
self.repository._warn_if_deprecated(self)
2292
self.repository.lock_read()
2297
self.control_files.lock_read()
2300
self.repository.unlock()
2303
@only_raises(errors.LockNotHeld, errors.LockBroken)
2306
self.control_files.unlock()
2308
# All-in-one needs to always unlock/lock.
2309
repo_control = getattr(self.repository, 'control_files', None)
2310
if (self.control_files == repo_control or
2311
not self.control_files.is_locked()):
2312
self.repository.unlock()
2313
if not self.control_files.is_locked():
2314
# we just released the lock
2315
self._clear_cached_state()
2317
def peek_lock_mode(self):
2318
if self.control_files._lock_count == 0:
2321
return self.control_files._lock_mode
2323
def get_physical_lock_status(self):
2324
return self.control_files.get_physical_lock_status()
2327
def print_file(self, file, revision_id):
2328
"""See Branch.print_file."""
2329
return self.repository.print_file(file, revision_id)
2331
def _write_revision_history(self, history):
2332
"""Factored out of set_revision_history.
2334
This performs the actual writing to disk.
2335
It is intended to be called by BzrBranch5.set_revision_history."""
2336
self._transport.put_bytes(
2337
'revision-history', '\n'.join(history),
2338
mode=self.bzrdir._get_file_mode())
2341
def set_revision_history(self, rev_history):
2342
"""See Branch.set_revision_history."""
2343
if 'evil' in debug.debug_flags:
2344
mutter_callsite(3, "set_revision_history scales with history.")
2345
check_not_reserved_id = _mod_revision.check_not_reserved_id
2346
for rev_id in rev_history:
2347
check_not_reserved_id(rev_id)
2348
if Branch.hooks['post_change_branch_tip']:
2349
# Don't calculate the last_revision_info() if there are no hooks
2351
old_revno, old_revid = self.last_revision_info()
2352
if len(rev_history) == 0:
2353
revid = _mod_revision.NULL_REVISION
2355
revid = rev_history[-1]
2356
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2357
self._write_revision_history(rev_history)
2358
self._clear_cached_state()
2359
self._cache_revision_history(rev_history)
2360
for hook in Branch.hooks['set_rh']:
2361
hook(self, rev_history)
2362
if Branch.hooks['post_change_branch_tip']:
2363
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2365
def _synchronize_history(self, destination, revision_id):
2366
"""Synchronize last revision and revision history between branches.
2368
This version is most efficient when the destination is also a
2369
BzrBranch5, but works for BzrBranch6 as long as the revision
2370
history is the true lefthand parent history, and all of the revisions
2371
are in the destination's repository. If not, set_revision_history
2374
:param destination: The branch to copy the history into
2375
:param revision_id: The revision-id to truncate history at. May
2376
be None to copy complete history.
2378
if not isinstance(destination._format, BzrBranchFormat5):
2379
super(BzrBranch, self)._synchronize_history(
2380
destination, revision_id)
2382
if revision_id == _mod_revision.NULL_REVISION:
2385
new_history = self.revision_history()
2386
if revision_id is not None and new_history != []:
2388
new_history = new_history[:new_history.index(revision_id) + 1]
2390
rev = self.repository.get_revision(revision_id)
2391
new_history = rev.get_history(self.repository)[1:]
2392
destination.set_revision_history(new_history)
2395
def set_last_revision_info(self, revno, revision_id):
2396
"""Set the last revision of this branch.
2398
The caller is responsible for checking that the revno is correct
2399
for this revision id.
2401
It may be possible to set the branch last revision to an id not
2402
present in the repository. However, branches can also be
2403
configured to check constraints on history, in which case this may not
2406
revision_id = _mod_revision.ensure_null(revision_id)
2407
# this old format stores the full history, but this api doesn't
2408
# provide it, so we must generate, and might as well check it's
2410
history = self._lefthand_history(revision_id)
2411
if len(history) != revno:
2412
raise AssertionError('%d != %d' % (len(history), revno))
2413
self.set_revision_history(history)
2415
def _gen_revision_history(self):
2416
history = self._transport.get_bytes('revision-history').split('\n')
2417
if history[-1:] == ['']:
2418
# There shouldn't be a trailing newline, but just in case.
2423
def generate_revision_history(self, revision_id, last_rev=None,
2425
"""Create a new revision history that will finish with revision_id.
2427
:param revision_id: the new tip to use.
2428
:param last_rev: The previous last_revision. If not None, then this
2429
must be a ancestory of revision_id, or DivergedBranches is raised.
2430
:param other_branch: The other branch that DivergedBranches should
2431
raise with respect to.
2433
self.set_revision_history(self._lefthand_history(revision_id,
2434
last_rev, other_branch))
2436
def basis_tree(self):
2437
"""See Branch.basis_tree."""
2438
return self.repository.revision_tree(self.last_revision())
2440
def _get_parent_location(self):
2441
_locs = ['parent', 'pull', 'x-pull']
2444
return self._transport.get_bytes(l).strip('\n')
2445
except errors.NoSuchFile:
2449
def _basic_push(self, target, overwrite, stop_revision):
2450
"""Basic implementation of push without bound branches or hooks.
2452
Must be called with source read locked and target write locked.
2454
result = BranchPushResult()
2455
result.source_branch = self
2456
result.target_branch = target
2457
result.old_revno, result.old_revid = target.last_revision_info()
2458
self.update_references(target)
2459
if result.old_revid != self.last_revision():
2460
# We assume that during 'push' this repository is closer than
2462
graph = self.repository.get_graph(target.repository)
2463
target.update_revisions(self, stop_revision,
2464
overwrite=overwrite, graph=graph)
2465
if self._push_should_merge_tags():
2466
result.tag_conflicts = self.tags.merge_to(target.tags,
2468
result.new_revno, result.new_revid = target.last_revision_info()
2471
def get_stacked_on_url(self):
2472
raise errors.UnstackableBranchFormat(self._format, self.base)
2474
def set_push_location(self, location):
2475
"""See Branch.set_push_location."""
2476
self.get_config().set_user_option(
2477
'push_location', location,
2478
store=_mod_config.STORE_LOCATION_NORECURSE)
2480
def _set_parent_location(self, url):
2482
self._transport.delete('parent')
2484
self._transport.put_bytes('parent', url + '\n',
2485
mode=self.bzrdir._get_file_mode())
2488
class BzrBranch5(BzrBranch):
2489
"""A format 5 branch. This supports new features over plain branches.
2491
It has support for a master_branch which is the data for bound branches.
2494
def get_bound_location(self):
2496
return self._transport.get_bytes('bound')[:-1]
2497
except errors.NoSuchFile:
2501
def get_master_branch(self, possible_transports=None):
2502
"""Return the branch we are bound to.
2504
:return: Either a Branch, or None
2506
This could memoise the branch, but if thats done
2507
it must be revalidated on each new lock.
2508
So for now we just don't memoise it.
2509
# RBC 20060304 review this decision.
2511
bound_loc = self.get_bound_location()
2515
return Branch.open(bound_loc,
2516
possible_transports=possible_transports)
2517
except (errors.NotBranchError, errors.ConnectionError), e:
2518
raise errors.BoundBranchConnectionFailure(
2522
def set_bound_location(self, location):
2523
"""Set the target where this branch is bound to.
2525
:param location: URL to the target branch
2528
self._transport.put_bytes('bound', location+'\n',
2529
mode=self.bzrdir._get_file_mode())
2532
self._transport.delete('bound')
2533
except errors.NoSuchFile:
2538
def bind(self, other):
2539
"""Bind this branch to the branch other.
2541
This does not push or pull data between the branches, though it does
2542
check for divergence to raise an error when the branches are not
2543
either the same, or one a prefix of the other. That behaviour may not
2544
be useful, so that check may be removed in future.
2546
:param other: The branch to bind to
2549
# TODO: jam 20051230 Consider checking if the target is bound
2550
# It is debatable whether you should be able to bind to
2551
# a branch which is itself bound.
2552
# Committing is obviously forbidden,
2553
# but binding itself may not be.
2554
# Since we *have* to check at commit time, we don't
2555
# *need* to check here
2557
# we want to raise diverged if:
2558
# last_rev is not in the other_last_rev history, AND
2559
# other_last_rev is not in our history, and do it without pulling
2561
self.set_bound_location(other.base)
2565
"""If bound, unbind"""
2566
return self.set_bound_location(None)
2569
def update(self, possible_transports=None):
2570
"""Synchronise this branch with the master branch if any.
2572
:return: None or the last_revision that was pivoted out during the
2575
master = self.get_master_branch(possible_transports)
2576
if master is not None:
2577
old_tip = _mod_revision.ensure_null(self.last_revision())
2578
self.pull(master, overwrite=True)
2579
if self.repository.get_graph().is_ancestor(old_tip,
2580
_mod_revision.ensure_null(self.last_revision())):
2586
class BzrBranch8(BzrBranch5):
2587
"""A branch that stores tree-reference locations."""
2589
def _open_hook(self):
2590
if self._ignore_fallbacks:
2593
url = self.get_stacked_on_url()
2594
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2595
errors.UnstackableBranchFormat):
2598
for hook in Branch.hooks['transform_fallback_location']:
2599
url = hook(self, url)
2601
hook_name = Branch.hooks.get_hook_name(hook)
2602
raise AssertionError(
2603
"'transform_fallback_location' hook %s returned "
2604
"None, not a URL." % hook_name)
2605
self._activate_fallback_location(url)
2607
def __init__(self, *args, **kwargs):
2608
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2609
super(BzrBranch8, self).__init__(*args, **kwargs)
2610
self._last_revision_info_cache = None
2611
self._reference_info = None
2613
def _clear_cached_state(self):
2614
super(BzrBranch8, self)._clear_cached_state()
2615
self._last_revision_info_cache = None
2616
self._reference_info = None
2618
def _last_revision_info(self):
2619
revision_string = self._transport.get_bytes('last-revision')
2620
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2621
revision_id = cache_utf8.get_cached_utf8(revision_id)
2623
return revno, revision_id
2625
def _write_last_revision_info(self, revno, revision_id):
2626
"""Simply write out the revision id, with no checks.
2628
Use set_last_revision_info to perform this safely.
2630
Does not update the revision_history cache.
2631
Intended to be called by set_last_revision_info and
2632
_write_revision_history.
2634
revision_id = _mod_revision.ensure_null(revision_id)
2635
out_string = '%d %s\n' % (revno, revision_id)
2636
self._transport.put_bytes('last-revision', out_string,
2637
mode=self.bzrdir._get_file_mode())
2640
def set_last_revision_info(self, revno, revision_id):
2641
revision_id = _mod_revision.ensure_null(revision_id)
2642
old_revno, old_revid = self.last_revision_info()
2643
if self._get_append_revisions_only():
2644
self._check_history_violation(revision_id)
2645
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2646
self._write_last_revision_info(revno, revision_id)
2647
self._clear_cached_state()
2648
self._last_revision_info_cache = revno, revision_id
2649
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2651
def _synchronize_history(self, destination, revision_id):
2652
"""Synchronize last revision and revision history between branches.
2654
:see: Branch._synchronize_history
2656
# XXX: The base Branch has a fast implementation of this method based
2657
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2658
# that uses set_revision_history. This class inherits from BzrBranch5,
2659
# but wants the fast implementation, so it calls
2660
# Branch._synchronize_history directly.
2661
Branch._synchronize_history(self, destination, revision_id)
2663
def _check_history_violation(self, revision_id):
2664
last_revision = _mod_revision.ensure_null(self.last_revision())
2665
if _mod_revision.is_null(last_revision):
2667
if last_revision not in self._lefthand_history(revision_id):
2668
raise errors.AppendRevisionsOnlyViolation(self.base)
2670
def _gen_revision_history(self):
2671
"""Generate the revision history from last revision
2673
last_revno, last_revision = self.last_revision_info()
2674
self._extend_partial_history(stop_index=last_revno-1)
2675
return list(reversed(self._partial_revision_history_cache))
2677
def _write_revision_history(self, history):
2678
"""Factored out of set_revision_history.
2680
This performs the actual writing to disk, with format-specific checks.
2681
It is intended to be called by BzrBranch5.set_revision_history.
2683
if len(history) == 0:
2684
last_revision = 'null:'
2686
if history != self._lefthand_history(history[-1]):
2687
raise errors.NotLefthandHistory(history)
2688
last_revision = history[-1]
2689
if self._get_append_revisions_only():
2690
self._check_history_violation(last_revision)
2691
self._write_last_revision_info(len(history), last_revision)
2694
def _set_parent_location(self, url):
2695
"""Set the parent branch"""
2696
self._set_config_location('parent_location', url, make_relative=True)
2699
def _get_parent_location(self):
2700
"""Set the parent branch"""
2701
return self._get_config_location('parent_location')
2704
def _set_all_reference_info(self, info_dict):
2705
"""Replace all reference info stored in a branch.
2707
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2710
writer = rio.RioWriter(s)
2711
for key, (tree_path, branch_location) in info_dict.iteritems():
2712
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2713
branch_location=branch_location)
2714
writer.write_stanza(stanza)
2715
self._transport.put_bytes('references', s.getvalue())
2716
self._reference_info = info_dict
2719
def _get_all_reference_info(self):
2720
"""Return all the reference info stored in a branch.
2722
:return: A dict of {file_id: (tree_path, branch_location)}
2724
if self._reference_info is not None:
2725
return self._reference_info
2726
rio_file = self._transport.get('references')
2728
stanzas = rio.read_stanzas(rio_file)
2729
info_dict = dict((s['file_id'], (s['tree_path'],
2730
s['branch_location'])) for s in stanzas)
2733
self._reference_info = info_dict
2736
def set_reference_info(self, file_id, tree_path, branch_location):
2737
"""Set the branch location to use for a tree reference.
2739
:param file_id: The file-id of the tree reference.
2740
:param tree_path: The path of the tree reference in the tree.
2741
:param branch_location: The location of the branch to retrieve tree
2744
info_dict = self._get_all_reference_info()
2745
info_dict[file_id] = (tree_path, branch_location)
2746
if None in (tree_path, branch_location):
2747
if tree_path is not None:
2748
raise ValueError('tree_path must be None when branch_location'
2750
if branch_location is not None:
2751
raise ValueError('branch_location must be None when tree_path'
2753
del info_dict[file_id]
2754
self._set_all_reference_info(info_dict)
2756
def get_reference_info(self, file_id):
2757
"""Get the tree_path and branch_location for a tree reference.
2759
:return: a tuple of (tree_path, branch_location)
2761
return self._get_all_reference_info().get(file_id, (None, None))
2763
def reference_parent(self, file_id, path, possible_transports=None):
2764
"""Return the parent branch for a tree-reference file_id.
2766
:param file_id: The file_id of the tree reference
2767
:param path: The path of the file_id in the tree
2768
:return: A branch associated with the file_id
2770
branch_location = self.get_reference_info(file_id)[1]
2771
if branch_location is None:
2772
return Branch.reference_parent(self, file_id, path,
2773
possible_transports)
2774
branch_location = urlutils.join(self.base, branch_location)
2775
return Branch.open(branch_location,
2776
possible_transports=possible_transports)
2778
def set_push_location(self, location):
2779
"""See Branch.set_push_location."""
2780
self._set_config_location('push_location', location)
2782
def set_bound_location(self, location):
2783
"""See Branch.set_push_location."""
2785
config = self.get_config()
2786
if location is None:
2787
if config.get_user_option('bound') != 'True':
2790
config.set_user_option('bound', 'False', warn_masked=True)
2793
self._set_config_location('bound_location', location,
2795
config.set_user_option('bound', 'True', warn_masked=True)
2798
def _get_bound_location(self, bound):
2799
"""Return the bound location in the config file.
2801
Return None if the bound parameter does not match"""
2802
config = self.get_config()
2803
config_bound = (config.get_user_option('bound') == 'True')
2804
if config_bound != bound:
2806
return self._get_config_location('bound_location', config=config)
2808
def get_bound_location(self):
2809
"""See Branch.set_push_location."""
2810
return self._get_bound_location(True)
2812
def get_old_bound_location(self):
2813
"""See Branch.get_old_bound_location"""
2814
return self._get_bound_location(False)
2816
def get_stacked_on_url(self):
2817
# you can always ask for the URL; but you might not be able to use it
2818
# if the repo can't support stacking.
2819
## self._check_stackable_repo()
2820
stacked_url = self._get_config_location('stacked_on_location')
2821
if stacked_url is None:
2822
raise errors.NotStacked(self)
2825
def _get_append_revisions_only(self):
2826
value = self.get_config().get_user_option('append_revisions_only')
2827
return value == 'True'
2830
def generate_revision_history(self, revision_id, last_rev=None,
2832
"""See BzrBranch5.generate_revision_history"""
2833
history = self._lefthand_history(revision_id, last_rev, other_branch)
2834
revno = len(history)
2835
self.set_last_revision_info(revno, revision_id)
2838
def get_rev_id(self, revno, history=None):
2839
"""Find the revision id of the specified revno."""
2841
return _mod_revision.NULL_REVISION
2843
last_revno, last_revision_id = self.last_revision_info()
2844
if revno <= 0 or revno > last_revno:
2845
raise errors.NoSuchRevision(self, revno)
2847
if history is not None:
2848
return history[revno - 1]
2850
index = last_revno - revno
2851
if len(self._partial_revision_history_cache) <= index:
2852
self._extend_partial_history(stop_index=index)
2853
if len(self._partial_revision_history_cache) > index:
2854
return self._partial_revision_history_cache[index]
2856
raise errors.NoSuchRevision(self, revno)
2859
def revision_id_to_revno(self, revision_id):
2860
"""Given a revision id, return its revno"""
2861
if _mod_revision.is_null(revision_id):
2864
index = self._partial_revision_history_cache.index(revision_id)
2866
self._extend_partial_history(stop_revision=revision_id)
2867
index = len(self._partial_revision_history_cache) - 1
2868
if self._partial_revision_history_cache[index] != revision_id:
2869
raise errors.NoSuchRevision(self, revision_id)
2870
return self.revno() - index
2873
class BzrBranch7(BzrBranch8):
2874
"""A branch with support for a fallback repository."""
2876
def set_reference_info(self, file_id, tree_path, branch_location):
2877
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2879
def get_reference_info(self, file_id):
2880
Branch.get_reference_info(self, file_id)
2882
def reference_parent(self, file_id, path, possible_transports=None):
2883
return Branch.reference_parent(self, file_id, path,
2884
possible_transports)
2887
class BzrBranch6(BzrBranch7):
2888
"""See BzrBranchFormat6 for the capabilities of this branch.
2890
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2894
def get_stacked_on_url(self):
2895
raise errors.UnstackableBranchFormat(self._format, self.base)
2898
######################################################################
2899
# results of operations
2902
class _Result(object):
2904
def _show_tag_conficts(self, to_file):
2905
if not getattr(self, 'tag_conflicts', None):
2907
to_file.write('Conflicting tags:\n')
2908
for name, value1, value2 in self.tag_conflicts:
2909
to_file.write(' %s\n' % (name, ))
2912
class PullResult(_Result):
2913
"""Result of a Branch.pull operation.
2915
:ivar old_revno: Revision number before pull.
2916
:ivar new_revno: Revision number after pull.
2917
:ivar old_revid: Tip revision id before pull.
2918
:ivar new_revid: Tip revision id after pull.
2919
:ivar source_branch: Source (local) branch object. (read locked)
2920
:ivar master_branch: Master branch of the target, or the target if no
2922
:ivar local_branch: target branch if there is a Master, else None
2923
:ivar target_branch: Target/destination branch object. (write locked)
2924
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2928
# DEPRECATED: pull used to return the change in revno
2929
return self.new_revno - self.old_revno
2931
def report(self, to_file):
2933
if self.old_revid == self.new_revid:
2934
to_file.write('No revisions to pull.\n')
2936
to_file.write('Now on revision %d.\n' % self.new_revno)
2937
self._show_tag_conficts(to_file)
2940
class BranchPushResult(_Result):
2941
"""Result of a Branch.push operation.
2943
:ivar old_revno: Revision number (eg 10) of the target before push.
2944
:ivar new_revno: Revision number (eg 12) of the target after push.
2945
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2947
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2949
:ivar source_branch: Source branch object that the push was from. This is
2950
read locked, and generally is a local (and thus low latency) branch.
2951
:ivar master_branch: If target is a bound branch, the master branch of
2952
target, or target itself. Always write locked.
2953
:ivar target_branch: The direct Branch where data is being sent (write
2955
:ivar local_branch: If the target is a bound branch this will be the
2956
target, otherwise it will be None.
2960
# DEPRECATED: push used to return the change in revno
2961
return self.new_revno - self.old_revno
2963
def report(self, to_file):
2964
"""Write a human-readable description of the result."""
2965
if self.old_revid == self.new_revid:
2966
note('No new revisions to push.')
2968
note('Pushed up to revision %d.' % self.new_revno)
2969
self._show_tag_conficts(to_file)
2972
class BranchCheckResult(object):
2973
"""Results of checking branch consistency.
2978
def __init__(self, branch):
2979
self.branch = branch
2982
def report_results(self, verbose):
2983
"""Report the check results via trace.note.
2985
:param verbose: Requests more detailed display of what was checked,
2988
note('checked branch %s format %s', self.branch.base,
2989
self.branch._format)
2990
for error in self.errors:
2991
note('found error:%s', error)
2994
class Converter5to6(object):
2995
"""Perform an in-place upgrade of format 5 to format 6"""
2997
def convert(self, branch):
2998
# Data for 5 and 6 can peacefully coexist.
2999
format = BzrBranchFormat6()
3000
new_branch = format.open(branch.bzrdir, _found=True)
3002
# Copy source data into target
3003
new_branch._write_last_revision_info(*branch.last_revision_info())
3004
new_branch.set_parent(branch.get_parent())
3005
new_branch.set_bound_location(branch.get_bound_location())
3006
new_branch.set_push_location(branch.get_push_location())
3008
# New branch has no tags by default
3009
new_branch.tags._set_tag_dict({})
3011
# Copying done; now update target format
3012
new_branch._transport.put_bytes('format',
3013
format.get_format_string(),
3014
mode=new_branch.bzrdir._get_file_mode())
3016
# Clean up old files
3017
new_branch._transport.delete('revision-history')
3019
branch.set_parent(None)
3020
except errors.NoSuchFile:
3022
branch.set_bound_location(None)
3025
class Converter6to7(object):
3026
"""Perform an in-place upgrade of format 6 to format 7"""
3028
def convert(self, branch):
3029
format = BzrBranchFormat7()
3030
branch._set_config_location('stacked_on_location', '')
3031
# update target format
3032
branch._transport.put_bytes('format', format.get_format_string())
3035
class Converter7to8(object):
3036
"""Perform an in-place upgrade of format 6 to format 7"""
3038
def convert(self, branch):
3039
format = BzrBranchFormat8()
3040
branch._transport.put_bytes('references', '')
3041
# update target format
3042
branch._transport.put_bytes('format', format.get_format_string())
3045
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3046
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3049
_run_with_write_locked_target will attempt to release the lock it acquires.
3051
If an exception is raised by callable, then that exception *will* be
3052
propagated, even if the unlock attempt raises its own error. Thus
3053
_run_with_write_locked_target should be preferred to simply doing::
3057
return callable(*args, **kwargs)
3062
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3063
# should share code?
3066
result = callable(*args, **kwargs)
3068
exc_info = sys.exc_info()
3072
raise exc_info[0], exc_info[1], exc_info[2]
3078
class InterBranch(InterObject):
3079
"""This class represents operations taking place between two branches.
3081
Its instances have methods like pull() and push() and contain
3082
references to the source and target repositories these operations
3083
can be carried out on.
3087
"""The available optimised InterBranch types."""
3090
def _get_branch_formats_to_test():
3091
"""Return a tuple with the Branch formats to use when testing."""
3092
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3094
def pull(self, overwrite=False, stop_revision=None,
3095
possible_transports=None, local=False):
3096
"""Mirror source into target branch.
3098
The target branch is considered to be 'local', having low latency.
3100
:returns: PullResult instance
3102
raise NotImplementedError(self.pull)
3104
def update_revisions(self, stop_revision=None, overwrite=False,
3106
"""Pull in new perfect-fit revisions.
3108
:param stop_revision: Updated until the given revision
3109
:param overwrite: Always set the branch pointer, rather than checking
3110
to see if it is a proper descendant.
3111
:param graph: A Graph object that can be used to query history
3112
information. This can be None.
3115
raise NotImplementedError(self.update_revisions)
3117
def push(self, overwrite=False, stop_revision=None,
3118
_override_hook_source_branch=None):
3119
"""Mirror the source branch into the target branch.
3121
The source branch is considered to be 'local', having low latency.
3123
raise NotImplementedError(self.push)
3126
class GenericInterBranch(InterBranch):
3127
"""InterBranch implementation that uses public Branch functions.
3131
def _get_branch_formats_to_test():
3132
return BranchFormat._default_format, BranchFormat._default_format
3134
def update_revisions(self, stop_revision=None, overwrite=False,
3136
"""See InterBranch.update_revisions()."""
3137
self.source.lock_read()
3139
other_revno, other_last_revision = self.source.last_revision_info()
3140
stop_revno = None # unknown
3141
if stop_revision is None:
3142
stop_revision = other_last_revision
3143
if _mod_revision.is_null(stop_revision):
3144
# if there are no commits, we're done.
3146
stop_revno = other_revno
3148
# what's the current last revision, before we fetch [and change it
3150
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3151
# we fetch here so that we don't process data twice in the common
3152
# case of having something to pull, and so that the check for
3153
# already merged can operate on the just fetched graph, which will
3154
# be cached in memory.
3155
self.target.fetch(self.source, stop_revision)
3156
# Check to see if one is an ancestor of the other
3159
graph = self.target.repository.get_graph()
3160
if self.target._check_if_descendant_or_diverged(
3161
stop_revision, last_rev, graph, self.source):
3162
# stop_revision is a descendant of last_rev, but we aren't
3163
# overwriting, so we're done.
3165
if stop_revno is None:
3167
graph = self.target.repository.get_graph()
3168
this_revno, this_last_revision = \
3169
self.target.last_revision_info()
3170
stop_revno = graph.find_distance_to_null(stop_revision,
3171
[(other_last_revision, other_revno),
3172
(this_last_revision, this_revno)])
3173
self.target.set_last_revision_info(stop_revno, stop_revision)
3175
self.source.unlock()
3177
def pull(self, overwrite=False, stop_revision=None,
3178
possible_transports=None, _hook_master=None, run_hooks=True,
3179
_override_hook_target=None, local=False):
3182
:param _hook_master: Private parameter - set the branch to
3183
be supplied as the master to pull hooks.
3184
:param run_hooks: Private parameter - if false, this branch
3185
is being called because it's the master of the primary branch,
3186
so it should not run its hooks.
3187
:param _override_hook_target: Private parameter - set the branch to be
3188
supplied as the target_branch to pull hooks.
3189
:param local: Only update the local branch, and not the bound branch.
3191
# This type of branch can't be bound.
3193
raise errors.LocalRequiresBoundBranch()
3194
result = PullResult()
3195
result.source_branch = self.source
3196
if _override_hook_target is None:
3197
result.target_branch = self.target
3199
result.target_branch = _override_hook_target
3200
self.source.lock_read()
3202
# We assume that during 'pull' the target repository is closer than
3204
self.source.update_references(self.target)
3205
graph = self.target.repository.get_graph(self.source.repository)
3206
# TODO: Branch formats should have a flag that indicates
3207
# that revno's are expensive, and pull() should honor that flag.
3209
result.old_revno, result.old_revid = \
3210
self.target.last_revision_info()
3211
self.target.update_revisions(self.source, stop_revision,
3212
overwrite=overwrite, graph=graph)
3213
# TODO: The old revid should be specified when merging tags,
3214
# so a tags implementation that versions tags can only
3215
# pull in the most recent changes. -- JRV20090506
3216
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3218
result.new_revno, result.new_revid = self.target.last_revision_info()
3220
result.master_branch = _hook_master
3221
result.local_branch = result.target_branch
3223
result.master_branch = result.target_branch
3224
result.local_branch = None
3226
for hook in Branch.hooks['post_pull']:
3229
self.source.unlock()
3232
def push(self, overwrite=False, stop_revision=None,
3233
_override_hook_source_branch=None):
3234
"""See InterBranch.push.
3236
This is the basic concrete implementation of push()
3238
:param _override_hook_source_branch: If specified, run
3239
the hooks passing this Branch as the source, rather than self.
3240
This is for use of RemoteBranch, where push is delegated to the
3241
underlying vfs-based Branch.
3243
# TODO: Public option to disable running hooks - should be trivial but
3245
self.source.lock_read()
3247
return _run_with_write_locked_target(
3248
self.target, self._push_with_bound_branches, overwrite,
3250
_override_hook_source_branch=_override_hook_source_branch)
3252
self.source.unlock()
3254
def _push_with_bound_branches(self, overwrite, stop_revision,
3255
_override_hook_source_branch=None):
3256
"""Push from source into target, and into target's master if any.
3259
if _override_hook_source_branch:
3260
result.source_branch = _override_hook_source_branch
3261
for hook in Branch.hooks['post_push']:
3264
bound_location = self.target.get_bound_location()
3265
if bound_location and self.target.base != bound_location:
3266
# there is a master branch.
3268
# XXX: Why the second check? Is it even supported for a branch to
3269
# be bound to itself? -- mbp 20070507
3270
master_branch = self.target.get_master_branch()
3271
master_branch.lock_write()
3273
# push into the master from the source branch.
3274
self.source._basic_push(master_branch, overwrite, stop_revision)
3275
# and push into the target branch from the source. Note that we
3276
# push from the source branch again, because its considered the
3277
# highest bandwidth repository.
3278
result = self.source._basic_push(self.target, overwrite,
3280
result.master_branch = master_branch
3281
result.local_branch = self.target
3285
master_branch.unlock()
3288
result = self.source._basic_push(self.target, overwrite,
3290
# TODO: Why set master_branch and local_branch if there's no
3291
# binding? Maybe cleaner to just leave them unset? -- mbp
3293
result.master_branch = self.target
3294
result.local_branch = None
3299
def is_compatible(self, source, target):
3300
# GenericBranch uses the public API, so always compatible
3304
class InterToBranch5(GenericInterBranch):
3307
def _get_branch_formats_to_test():
3308
return BranchFormat._default_format, BzrBranchFormat5()
3310
def pull(self, overwrite=False, stop_revision=None,
3311
possible_transports=None, run_hooks=True,
3312
_override_hook_target=None, local=False):
3313
"""Pull from source into self, updating my master if any.
3315
:param run_hooks: Private parameter - if false, this branch
3316
is being called because it's the master of the primary branch,
3317
so it should not run its hooks.
3319
bound_location = self.target.get_bound_location()
3320
if local and not bound_location:
3321
raise errors.LocalRequiresBoundBranch()
3322
master_branch = None
3323
if not local and bound_location and self.source.base != bound_location:
3324
# not pulling from master, so we need to update master.
3325
master_branch = self.target.get_master_branch(possible_transports)
3326
master_branch.lock_write()
3329
# pull from source into master.
3330
master_branch.pull(self.source, overwrite, stop_revision,
3332
return super(InterToBranch5, self).pull(overwrite,
3333
stop_revision, _hook_master=master_branch,
3334
run_hooks=run_hooks,
3335
_override_hook_target=_override_hook_target)
3338
master_branch.unlock()
3341
InterBranch.register_optimiser(GenericInterBranch)
3342
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
