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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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class Branch(bzrdir.ControlComponent):
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"""Branch holding a history of revisions.
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Base directory/url of the branch; using control_url and
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control_transport is more standardized.
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hooks: An instance of BranchHooks.
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# this is really an instance variable - FIXME move it there
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def control_transport(self):
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return self._transport
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def user_transport(self):
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return self.bzrdir.user_transport
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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.user_url, url)
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self.repository.add_fallback_repository(repo)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self.repository._format,
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self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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def open_containing(url, possible_transports=None):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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return control.open_branch(), relpath
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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def get_config(self):
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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master is not None:
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# return the master branch value
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except errors.BzrError, e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map and
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len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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# Make sure we don't return revisions that are not part of the
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# start_revision_id ancestry.
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filtered = self._filter_non_ancestors(filtered)
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if direction == 'reverse':
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if direction == 'forward':
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return reversed(list(filtered))
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raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, 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 _filter_non_ancestors(self, rev_iter):
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# If we started from a dotted revno, we want to consider it as a tip
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# and don't want to yield revisions that are not part of its
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# ancestry. Given the order guaranteed by the merge sort, we will see
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# uninteresting descendants of the first parent of our tip before the
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first = rev_iter.next()
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(rev_id, merge_depth, revno, end_of_merge) = first
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# We start at a mainline revision so by definition, all others
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# revisions in rev_iter are ancestors
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for node in rev_iter:
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pmap = self.repository.get_parent_map([rev_id])
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parents = pmap.get(rev_id, [])
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whitelist.update(parents)
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# If there is no parents, there is nothing of interest left
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# FIXME: It's hard to test this scenario here as this code is never
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# called in that case. -- vila 20100322
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for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
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if rev_id in whitelist:
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pmap = self.repository.get_parent_map([rev_id])
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parents = pmap.get(rev_id, [])
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whitelist.remove(rev_id)
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whitelist.update(parents)
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# We've reached the mainline, there is nothing left to
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# A revision that is not part of the ancestry of our
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yield (rev_id, merge_depth, revno, end_of_merge)
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def leave_lock_in_place(self):
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"""Tell this branch object not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not 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.user_url)
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def set_append_revisions_only(self, enabled):
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if not self._format.supports_set_append_revisions_only():
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raise errors.UpgradeRequired(self.user_url)
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self.get_config().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.control_url == from_branch.control_url:
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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.user_url)
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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."""
703
raise NotImplementedError(self.print_file)
705
def set_revision_history(self, rev_history):
706
raise NotImplementedError(self.set_revision_history)
709
def set_parent(self, url):
710
"""See Branch.set_parent."""
711
# TODO: Maybe delete old location files?
712
# URLs should never be unicode, even on the local fs,
713
# FIXUP this and get_parent in a future branch format bump:
714
# read and rewrite the file. RBC 20060125
716
if isinstance(url, unicode):
718
url = url.encode('ascii')
719
except UnicodeEncodeError:
720
raise errors.InvalidURL(url,
721
"Urls must be 7-bit ascii, "
722
"use bzrlib.urlutils.escape")
723
url = urlutils.relative_url(self.base, url)
724
self._set_parent_location(url)
727
def set_stacked_on_url(self, url):
728
"""Set the URL this branch is stacked against.
730
:raises UnstackableBranchFormat: If the branch does not support
732
:raises UnstackableRepositoryFormat: If the repository does not support
735
if not self._format.supports_stacking():
736
raise errors.UnstackableBranchFormat(self._format, self.user_url)
737
# XXX: Changing from one fallback repository to another does not check
738
# that all the data you need is present in the new fallback.
739
# Possibly it should.
740
self._check_stackable_repo()
743
old_url = self.get_stacked_on_url()
744
except (errors.NotStacked, errors.UnstackableBranchFormat,
745
errors.UnstackableRepositoryFormat):
749
self._activate_fallback_location(url)
750
# write this out after the repository is stacked to avoid setting a
751
# stacked config that doesn't work.
752
self._set_config_location('stacked_on_location', url)
755
"""Change a branch to be unstacked, copying data as needed.
757
Don't call this directly, use set_stacked_on_url(None).
759
pb = ui.ui_factory.nested_progress_bar()
761
pb.update("Unstacking")
762
# The basic approach here is to fetch the tip of the branch,
763
# including all available ghosts, from the existing stacked
764
# repository into a new repository object without the fallbacks.
766
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
767
# correct for CHKMap repostiories
768
old_repository = self.repository
769
if len(old_repository._fallback_repositories) != 1:
770
raise AssertionError("can't cope with fallback repositories "
771
"of %r" % (self.repository,))
772
# unlock it, including unlocking the fallback
773
old_repository.unlock()
774
old_repository.lock_read()
776
# Repositories don't offer an interface to remove fallback
777
# repositories today; take the conceptually simpler option and just
778
# reopen it. We reopen it starting from the URL so that we
779
# get a separate connection for RemoteRepositories and can
780
# stream from one of them to the other. This does mean doing
781
# separate SSH connection setup, but unstacking is not a
782
# common operation so it's tolerable.
783
new_bzrdir = bzrdir.BzrDir.open_from_transport(
784
self.bzrdir.user_transport)
785
new_repository = new_bzrdir.find_repository()
786
self.repository = new_repository
787
if self.repository._fallback_repositories:
788
raise AssertionError("didn't expect %r to have "
789
"fallback_repositories"
790
% (self.repository,))
791
# this is not paired with an unlock because it's just restoring
792
# the previous state; the lock's released when set_stacked_on_url
794
self.repository.lock_write()
795
# XXX: If you unstack a branch while it has a working tree
796
# with a pending merge, the pending-merged revisions will no
797
# longer be present. You can (probably) revert and remerge.
799
# XXX: This only fetches up to the tip of the repository; it
800
# doesn't bring across any tags. That's fairly consistent
801
# with how branch works, but perhaps not ideal.
802
self.repository.fetch(old_repository,
803
revision_id=self.last_revision(),
806
old_repository.unlock()
810
def _set_tags_bytes(self, bytes):
811
"""Mirror method for _get_tags_bytes.
813
:seealso: Branch._get_tags_bytes.
815
return _run_with_write_locked_target(self, self._transport.put_bytes,
818
def _cache_revision_history(self, rev_history):
819
"""Set the cached revision history to rev_history.
821
The revision_history method will use this cache to avoid regenerating
822
the revision history.
824
This API is semi-public; it only for use by subclasses, all other code
825
should consider it to be private.
827
self._revision_history_cache = rev_history
829
def _cache_revision_id_to_revno(self, revision_id_to_revno):
830
"""Set the cached revision_id => revno map to revision_id_to_revno.
832
This API is semi-public; it only for use by subclasses, all other code
833
should consider it to be private.
835
self._revision_id_to_revno_cache = revision_id_to_revno
837
def _clear_cached_state(self):
838
"""Clear any cached data on this branch, e.g. cached revision history.
840
This means the next call to revision_history will need to call
841
_gen_revision_history.
843
This API is semi-public; it only for use by subclasses, all other code
844
should consider it to be private.
846
self._revision_history_cache = None
847
self._revision_id_to_revno_cache = None
848
self._last_revision_info_cache = None
849
self._merge_sorted_revisions_cache = None
850
self._partial_revision_history_cache = []
851
self._partial_revision_id_to_revno_cache = {}
853
def _gen_revision_history(self):
854
"""Return sequence of revision hashes on to this branch.
856
Unlike revision_history, this method always regenerates or rereads the
857
revision history, i.e. it does not cache the result, so repeated calls
860
Concrete subclasses should override this instead of revision_history so
861
that subclasses do not need to deal with caching logic.
863
This API is semi-public; it only for use by subclasses, all other code
864
should consider it to be private.
866
raise NotImplementedError(self._gen_revision_history)
869
def revision_history(self):
870
"""Return sequence of revision ids on this branch.
872
This method will cache the revision history for as long as it is safe to
875
if 'evil' in debug.debug_flags:
876
mutter_callsite(3, "revision_history scales with history.")
877
if self._revision_history_cache is not None:
878
history = self._revision_history_cache
880
history = self._gen_revision_history()
881
self._cache_revision_history(history)
885
"""Return current revision number for this branch.
887
That is equivalent to the number of revisions committed to
890
return self.last_revision_info()[0]
893
"""Older format branches cannot bind or unbind."""
894
raise errors.UpgradeRequired(self.user_url)
896
def last_revision(self):
897
"""Return last revision id, or NULL_REVISION."""
898
return self.last_revision_info()[1]
901
def last_revision_info(self):
902
"""Return information about the last revision.
904
:return: A tuple (revno, revision_id).
906
if self._last_revision_info_cache is None:
907
self._last_revision_info_cache = self._last_revision_info()
908
return self._last_revision_info_cache
910
def _last_revision_info(self):
911
rh = self.revision_history()
914
return (revno, rh[-1])
916
return (0, _mod_revision.NULL_REVISION)
918
@deprecated_method(deprecated_in((1, 6, 0)))
919
def missing_revisions(self, other, stop_revision=None):
920
"""Return a list of new revisions that would perfectly fit.
922
If self and other have not diverged, return a list of the revisions
923
present in other, but missing from self.
925
self_history = self.revision_history()
926
self_len = len(self_history)
927
other_history = other.revision_history()
928
other_len = len(other_history)
929
common_index = min(self_len, other_len) -1
930
if common_index >= 0 and \
931
self_history[common_index] != other_history[common_index]:
932
raise errors.DivergedBranches(self, other)
934
if stop_revision is None:
935
stop_revision = other_len
937
if stop_revision > other_len:
938
raise errors.NoSuchRevision(self, stop_revision)
939
return other_history[self_len:stop_revision]
942
def update_revisions(self, other, stop_revision=None, overwrite=False,
944
"""Pull in new perfect-fit revisions.
946
:param other: Another Branch to pull from
947
:param stop_revision: Updated until the given revision
948
:param overwrite: Always set the branch pointer, rather than checking
949
to see if it is a proper descendant.
950
:param graph: A Graph object that can be used to query history
951
information. This can be None.
954
return InterBranch.get(other, self).update_revisions(stop_revision,
957
def import_last_revision_info(self, source_repo, revno, revid):
958
"""Set the last revision info, importing from another repo if necessary.
960
This is used by the bound branch code to upload a revision to
961
the master branch first before updating the tip of the local branch.
963
:param source_repo: Source repository to optionally fetch from
964
:param revno: Revision number of the new tip
965
:param revid: Revision id of the new tip
967
if not self.repository.has_same_location(source_repo):
968
self.repository.fetch(source_repo, revision_id=revid)
969
self.set_last_revision_info(revno, revid)
971
def revision_id_to_revno(self, revision_id):
972
"""Given a revision id, return its revno"""
973
if _mod_revision.is_null(revision_id):
975
history = self.revision_history()
977
return history.index(revision_id) + 1
979
raise errors.NoSuchRevision(self, revision_id)
982
def get_rev_id(self, revno, history=None):
983
"""Find the revision id of the specified revno."""
985
return _mod_revision.NULL_REVISION
986
last_revno, last_revid = self.last_revision_info()
987
if revno == last_revno:
989
if revno <= 0 or revno > last_revno:
990
raise errors.NoSuchRevision(self, revno)
991
distance_from_last = last_revno - revno
992
if len(self._partial_revision_history_cache) <= distance_from_last:
993
self._extend_partial_history(distance_from_last)
994
return self._partial_revision_history_cache[distance_from_last]
997
def pull(self, source, overwrite=False, stop_revision=None,
998
possible_transports=None, *args, **kwargs):
999
"""Mirror source into this branch.
1001
This branch is considered to be 'local', having low latency.
1003
:returns: PullResult instance
1005
return InterBranch.get(source, self).pull(overwrite=overwrite,
1006
stop_revision=stop_revision,
1007
possible_transports=possible_transports, *args, **kwargs)
1009
def push(self, target, overwrite=False, stop_revision=None, *args,
1011
"""Mirror this branch into target.
1013
This branch is considered to be 'local', having low latency.
1015
return InterBranch.get(self, target).push(overwrite, stop_revision,
1018
def lossy_push(self, target, stop_revision=None):
1019
"""Push deltas into another branch.
1021
:note: This does not, like push, retain the revision ids from
1022
the source branch and will, rather than adding bzr-specific
1023
metadata, push only those semantics of the revision that can be
1024
natively represented by this branch' VCS.
1026
:param target: Target branch
1027
:param stop_revision: Revision to push, defaults to last revision.
1028
:return: BranchPushResult with an extra member revidmap:
1029
A dictionary mapping revision ids from the target branch
1030
to new revision ids in the target branch, for each
1031
revision that was pushed.
1033
inter = InterBranch.get(self, target)
1034
lossy_push = getattr(inter, "lossy_push", None)
1035
if lossy_push is None:
1036
raise errors.LossyPushToSameVCS(self, target)
1037
return lossy_push(stop_revision)
1039
def basis_tree(self):
1040
"""Return `Tree` object for last revision."""
1041
return self.repository.revision_tree(self.last_revision())
1043
def get_parent(self):
1044
"""Return the parent location of the branch.
1046
This is the default location for pull/missing. The usual
1047
pattern is that the user can override it by specifying a
1050
parent = self._get_parent_location()
1053
# This is an old-format absolute path to a local branch
1054
# turn it into a url
1055
if parent.startswith('/'):
1056
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1058
return urlutils.join(self.base[:-1], parent)
1059
except errors.InvalidURLJoin, e:
1060
raise errors.InaccessibleParent(parent, self.user_url)
1062
def _get_parent_location(self):
1063
raise NotImplementedError(self._get_parent_location)
1065
def _set_config_location(self, name, url, config=None,
1066
make_relative=False):
1068
config = self.get_config()
1072
url = urlutils.relative_url(self.base, url)
1073
config.set_user_option(name, url, warn_masked=True)
1075
def _get_config_location(self, name, config=None):
1077
config = self.get_config()
1078
location = config.get_user_option(name)
1083
def get_child_submit_format(self):
1084
"""Return the preferred format of submissions to this branch."""
1085
return self.get_config().get_user_option("child_submit_format")
1087
def get_submit_branch(self):
1088
"""Return the submit location of the branch.
1090
This is the default location for bundle. The usual
1091
pattern is that the user can override it by specifying a
1094
return self.get_config().get_user_option('submit_branch')
1096
def set_submit_branch(self, location):
1097
"""Return the submit location of the branch.
1099
This is the default location for bundle. The usual
1100
pattern is that the user can override it by specifying a
1103
self.get_config().set_user_option('submit_branch', location,
1106
def get_public_branch(self):
1107
"""Return the public location of the branch.
1109
This is used by merge directives.
1111
return self._get_config_location('public_branch')
1113
def set_public_branch(self, location):
1114
"""Return the submit location of the branch.
1116
This is the default location for bundle. The usual
1117
pattern is that the user can override it by specifying a
1120
self._set_config_location('public_branch', location)
1122
def get_push_location(self):
1123
"""Return the None or the location to push this branch to."""
1124
push_loc = self.get_config().get_user_option('push_location')
1127
def set_push_location(self, location):
1128
"""Set a new push location for this branch."""
1129
raise NotImplementedError(self.set_push_location)
1131
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1132
"""Run the post_change_branch_tip hooks."""
1133
hooks = Branch.hooks['post_change_branch_tip']
1136
new_revno, new_revid = self.last_revision_info()
1137
params = ChangeBranchTipParams(
1138
self, old_revno, new_revno, old_revid, new_revid)
1142
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1143
"""Run the pre_change_branch_tip hooks."""
1144
hooks = Branch.hooks['pre_change_branch_tip']
1147
old_revno, old_revid = self.last_revision_info()
1148
params = ChangeBranchTipParams(
1149
self, old_revno, new_revno, old_revid, new_revid)
1155
"""Synchronise this branch with the master branch if any.
1157
:return: None or the last_revision pivoted out during the update.
1161
def check_revno(self, revno):
1163
Check whether a revno corresponds to any revision.
1164
Zero (the NULL revision) is considered valid.
1167
self.check_real_revno(revno)
1169
def check_real_revno(self, revno):
1171
Check whether a revno corresponds to a real revision.
1172
Zero (the NULL revision) is considered invalid
1174
if revno < 1 or revno > self.revno():
1175
raise errors.InvalidRevisionNumber(revno)
1178
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
1179
"""Clone this branch into to_bzrdir preserving all semantic values.
1181
Most API users will want 'create_clone_on_transport', which creates a
1182
new bzrdir and branch on the fly.
1184
revision_id: if not None, the revision history in the new branch will
1185
be truncated to end with revision_id.
1187
result = to_bzrdir.create_branch()
1190
if repository_policy is not None:
1191
repository_policy.configure_branch(result)
1192
self.copy_content_into(result, revision_id=revision_id)
1198
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
1199
"""Create a new line of development from the branch, into to_bzrdir.
1201
to_bzrdir controls the branch format.
1203
revision_id: if not None, the revision history in the new branch will
1204
be truncated to end with revision_id.
1206
if (repository_policy is not None and
1207
repository_policy.requires_stacking()):
1208
to_bzrdir._format.require_stacking(_skip_repo=True)
1209
result = to_bzrdir.create_branch()
1212
if repository_policy is not None:
1213
repository_policy.configure_branch(result)
1214
self.copy_content_into(result, revision_id=revision_id)
1215
result.set_parent(self.bzrdir.user_url)
1220
def _synchronize_history(self, destination, revision_id):
1221
"""Synchronize last revision and revision history between branches.
1223
This version is most efficient when the destination is also a
1224
BzrBranch6, but works for BzrBranch5, as long as the destination's
1225
repository contains all the lefthand ancestors of the intended
1226
last_revision. If not, set_last_revision_info will fail.
1228
:param destination: The branch to copy the history into
1229
:param revision_id: The revision-id to truncate history at. May
1230
be None to copy complete history.
1232
source_revno, source_revision_id = self.last_revision_info()
1233
if revision_id is None:
1234
revno, revision_id = source_revno, source_revision_id
1236
graph = self.repository.get_graph()
1238
revno = graph.find_distance_to_null(revision_id,
1239
[(source_revision_id, source_revno)])
1240
except errors.GhostRevisionsHaveNoRevno:
1241
# Default to 1, if we can't find anything else
1243
destination.set_last_revision_info(revno, revision_id)
1246
def copy_content_into(self, destination, revision_id=None):
1247
"""Copy the content of self into destination.
1249
revision_id: if not None, the revision history in the new branch will
1250
be truncated to end with revision_id.
1252
self.update_references(destination)
1253
self._synchronize_history(destination, revision_id)
1255
parent = self.get_parent()
1256
except errors.InaccessibleParent, e:
1257
mutter('parent was not accessible to copy: %s', e)
1260
destination.set_parent(parent)
1261
if self._push_should_merge_tags():
1262
self.tags.merge_to(destination.tags)
1264
def update_references(self, target):
1265
if not getattr(self._format, 'supports_reference_locations', False):
1267
reference_dict = self._get_all_reference_info()
1268
if len(reference_dict) == 0:
1270
old_base = self.base
1271
new_base = target.base
1272
target_reference_dict = target._get_all_reference_info()
1273
for file_id, (tree_path, branch_location) in (
1274
reference_dict.items()):
1275
branch_location = urlutils.rebase_url(branch_location,
1277
target_reference_dict.setdefault(
1278
file_id, (tree_path, branch_location))
1279
target._set_all_reference_info(target_reference_dict)
1282
def check(self, refs):
1283
"""Check consistency of the branch.
1285
In particular this checks that revisions given in the revision-history
1286
do actually match up in the revision graph, and that they're all
1287
present in the repository.
1289
Callers will typically also want to check the repository.
1291
:param refs: Calculated refs for this branch as specified by
1292
branch._get_check_refs()
1293
:return: A BranchCheckResult.
1295
result = BranchCheckResult(self)
1296
last_revno, last_revision_id = self.last_revision_info()
1297
actual_revno = refs[('lefthand-distance', last_revision_id)]
1298
if actual_revno != last_revno:
1299
result.errors.append(errors.BzrCheckError(
1300
'revno does not match len(mainline) %s != %s' % (
1301
last_revno, actual_revno)))
1302
# TODO: We should probably also check that self.revision_history
1303
# matches the repository for older branch formats.
1304
# If looking for the code that cross-checks repository parents against
1305
# the iter_reverse_revision_history output, that is now a repository
1309
def _get_checkout_format(self):
1310
"""Return the most suitable metadir for a checkout of this branch.
1311
Weaves are used if this branch's repository uses weaves.
1313
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1314
from bzrlib.repofmt import weaverepo
1315
format = bzrdir.BzrDirMetaFormat1()
1316
format.repository_format = weaverepo.RepositoryFormat7()
1318
format = self.repository.bzrdir.checkout_metadir()
1319
format.set_branch_format(self._format)
1322
def create_clone_on_transport(self, to_transport, revision_id=None,
1323
stacked_on=None, create_prefix=False, use_existing_dir=False):
1324
"""Create a clone of this branch and its bzrdir.
1326
:param to_transport: The transport to clone onto.
1327
:param revision_id: The revision id to use as tip in the new branch.
1328
If None the tip is obtained from this branch.
1329
:param stacked_on: An optional URL to stack the clone on.
1330
:param create_prefix: Create any missing directories leading up to
1332
:param use_existing_dir: Use an existing directory if one exists.
1334
# XXX: Fix the bzrdir API to allow getting the branch back from the
1335
# clone call. Or something. 20090224 RBC/spiv.
1336
if revision_id is None:
1337
revision_id = self.last_revision()
1338
dir_to = self.bzrdir.clone_on_transport(to_transport,
1339
revision_id=revision_id, stacked_on=stacked_on,
1340
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1341
return dir_to.open_branch()
1343
def create_checkout(self, to_location, revision_id=None,
1344
lightweight=False, accelerator_tree=None,
1346
"""Create a checkout of a branch.
1348
:param to_location: The url to produce the checkout at
1349
:param revision_id: The revision to check out
1350
:param lightweight: If True, produce a lightweight checkout, otherwise,
1351
produce a bound branch (heavyweight checkout)
1352
:param accelerator_tree: A tree which can be used for retrieving file
1353
contents more quickly than the revision tree, i.e. a workingtree.
1354
The revision tree will be used for cases where accelerator_tree's
1355
content is different.
1356
:param hardlink: If true, hard-link files from accelerator_tree,
1358
:return: The tree of the created checkout
1360
t = transport.get_transport(to_location)
1363
format = self._get_checkout_format()
1364
checkout = format.initialize_on_transport(t)
1365
from_branch = BranchReferenceFormat().initialize(checkout,
1368
format = self._get_checkout_format()
1369
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1370
to_location, force_new_tree=False, format=format)
1371
checkout = checkout_branch.bzrdir
1372
checkout_branch.bind(self)
1373
# pull up to the specified revision_id to set the initial
1374
# branch tip correctly, and seed it with history.
1375
checkout_branch.pull(self, stop_revision=revision_id)
1377
tree = checkout.create_workingtree(revision_id,
1378
from_branch=from_branch,
1379
accelerator_tree=accelerator_tree,
1381
basis_tree = tree.basis_tree()
1382
basis_tree.lock_read()
1384
for path, file_id in basis_tree.iter_references():
1385
reference_parent = self.reference_parent(file_id, path)
1386
reference_parent.create_checkout(tree.abspath(path),
1387
basis_tree.get_reference_revision(file_id, path),
1394
def reconcile(self, thorough=True):
1395
"""Make sure the data stored in this branch is consistent."""
1396
from bzrlib.reconcile import BranchReconciler
1397
reconciler = BranchReconciler(self, thorough=thorough)
1398
reconciler.reconcile()
1401
def reference_parent(self, file_id, path, possible_transports=None):
1402
"""Return the parent branch for a tree-reference file_id
1403
:param file_id: The file_id of the tree reference
1404
:param path: The path of the file_id in the tree
1405
:return: A branch associated with the file_id
1407
# FIXME should provide multiple branches, based on config
1408
return Branch.open_from_transport(
1409
self.bzrdir.root_transport.clone(path),
1410
possible_transports=possible_transports)
1412
def supports_tags(self):
1413
return self._format.supports_tags()
1415
def automatic_tag_name(self, revision_id):
1416
"""Try to automatically find the tag name for a revision.
1418
:param revision_id: Revision id of the revision.
1419
:return: A tag name or None if no tag name could be determined.
1421
for hook in Branch.hooks['automatic_tag_name']:
1422
ret = hook(self, revision_id)
1427
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1429
"""Ensure that revision_b is a descendant of revision_a.
1431
This is a helper function for update_revisions.
1433
:raises: DivergedBranches if revision_b has diverged from revision_a.
1434
:returns: True if revision_b is a descendant of revision_a.
1436
relation = self._revision_relations(revision_a, revision_b, graph)
1437
if relation == 'b_descends_from_a':
1439
elif relation == 'diverged':
1440
raise errors.DivergedBranches(self, other_branch)
1441
elif relation == 'a_descends_from_b':
1444
raise AssertionError("invalid relation: %r" % (relation,))
1446
def _revision_relations(self, revision_a, revision_b, graph):
1447
"""Determine the relationship between two revisions.
1449
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1451
heads = graph.heads([revision_a, revision_b])
1452
if heads == set([revision_b]):
1453
return 'b_descends_from_a'
1454
elif heads == set([revision_a, revision_b]):
1455
# These branches have diverged
1457
elif heads == set([revision_a]):
1458
return 'a_descends_from_b'
1460
raise AssertionError("invalid heads: %r" % (heads,))
1463
class BranchFormat(object):
1464
"""An encapsulation of the initialization and open routines for a format.
1466
Formats provide three things:
1467
* An initialization routine,
1471
Formats are placed in an dict by their format string for reference
1472
during branch opening. Its not required that these be instances, they
1473
can be classes themselves with class methods - it simply depends on
1474
whether state is needed for a given format or not.
1476
Once a format is deprecated, just deprecate the initialize and open
1477
methods on the format class. Do not deprecate the object, as the
1478
object will be created every time regardless.
1481
_default_format = None
1482
"""The default format used for new branches."""
1485
"""The known formats."""
1487
can_set_append_revisions_only = True
1489
def __eq__(self, other):
1490
return self.__class__ is other.__class__
1492
def __ne__(self, other):
1493
return not (self == other)
1496
def find_format(klass, a_bzrdir, name=None):
1497
"""Return the format for the branch object in a_bzrdir."""
1499
transport = a_bzrdir.get_branch_transport(None, name=name)
1500
format_string = transport.get_bytes("format")
1501
return klass._formats[format_string]
1502
except errors.NoSuchFile:
1503
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1505
raise errors.UnknownFormatError(format=format_string, kind='branch')
1508
def get_default_format(klass):
1509
"""Return the current default format."""
1510
return klass._default_format
1512
def get_reference(self, a_bzrdir):
1513
"""Get the target reference of the branch in a_bzrdir.
1515
format probing must have been completed before calling
1516
this method - it is assumed that the format of the branch
1517
in a_bzrdir is correct.
1519
:param a_bzrdir: The bzrdir to get the branch data from.
1520
:return: None if the branch is not a reference branch.
1525
def set_reference(self, a_bzrdir, to_branch):
1526
"""Set the target reference of the branch in a_bzrdir.
1528
format probing must have been completed before calling
1529
this method - it is assumed that the format of the branch
1530
in a_bzrdir is correct.
1532
:param a_bzrdir: The bzrdir to set the branch reference for.
1533
:param to_branch: branch that the checkout is to reference
1535
raise NotImplementedError(self.set_reference)
1537
def get_format_string(self):
1538
"""Return the ASCII format string that identifies this format."""
1539
raise NotImplementedError(self.get_format_string)
1541
def get_format_description(self):
1542
"""Return the short format description for this format."""
1543
raise NotImplementedError(self.get_format_description)
1545
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1546
lock_type='metadir', set_format=True):
1547
"""Initialize a branch in a bzrdir, with specified files
1549
:param a_bzrdir: The bzrdir to initialize the branch in
1550
:param utf8_files: The files to create as a list of
1551
(filename, content) tuples
1552
:param name: Name of colocated branch to create, if any
1553
:param set_format: If True, set the format with
1554
self.get_format_string. (BzrBranch4 has its format set
1556
:return: a branch in this format
1558
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1559
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1561
'metadir': ('lock', lockdir.LockDir),
1562
'branch4': ('branch-lock', lockable_files.TransportLock),
1564
lock_name, lock_class = lock_map[lock_type]
1565
control_files = lockable_files.LockableFiles(branch_transport,
1566
lock_name, lock_class)
1567
control_files.create_lock()
1569
control_files.lock_write()
1570
except errors.LockContention:
1571
if lock_type != 'branch4':
1577
utf8_files += [('format', self.get_format_string())]
1579
for (filename, content) in utf8_files:
1580
branch_transport.put_bytes(
1582
mode=a_bzrdir._get_file_mode())
1585
control_files.unlock()
1586
return self.open(a_bzrdir, name, _found=True)
1588
def initialize(self, a_bzrdir, name=None):
1589
"""Create a branch of this format in a_bzrdir.
1591
:param name: Name of the colocated branch to create.
1593
raise NotImplementedError(self.initialize)
1595
def is_supported(self):
1596
"""Is this format supported?
1598
Supported formats can be initialized and opened.
1599
Unsupported formats may not support initialization or committing or
1600
some other features depending on the reason for not being supported.
1604
def make_tags(self, branch):
1605
"""Create a tags object for branch.
1607
This method is on BranchFormat, because BranchFormats are reflected
1608
over the wire via network_name(), whereas full Branch instances require
1609
multiple VFS method calls to operate at all.
1611
The default implementation returns a disabled-tags instance.
1613
Note that it is normal for branch to be a RemoteBranch when using tags
1616
return DisabledTags(branch)
1618
def network_name(self):
1619
"""A simple byte string uniquely identifying this format for RPC calls.
1621
MetaDir branch formats use their disk format string to identify the
1622
repository over the wire. All in one formats such as bzr < 0.8, and
1623
foreign formats like svn/git and hg should use some marker which is
1624
unique and immutable.
1626
raise NotImplementedError(self.network_name)
1628
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1629
"""Return the branch object for a_bzrdir
1631
:param a_bzrdir: A BzrDir that contains a branch.
1632
:param name: Name of colocated branch to open
1633
:param _found: a private parameter, do not use it. It is used to
1634
indicate if format probing has already be done.
1635
:param ignore_fallbacks: when set, no fallback branches will be opened
1636
(if there are any). Default is to open fallbacks.
1638
raise NotImplementedError(self.open)
1641
def register_format(klass, format):
1642
"""Register a metadir format."""
1643
klass._formats[format.get_format_string()] = format
1644
# Metadir formats have a network name of their format string, and get
1645
# registered as class factories.
1646
network_format_registry.register(format.get_format_string(), format.__class__)
1649
def set_default_format(klass, format):
1650
klass._default_format = format
1652
def supports_set_append_revisions_only(self):
1653
"""True if this format supports set_append_revisions_only."""
1656
def supports_stacking(self):
1657
"""True if this format records a stacked-on branch."""
1661
def unregister_format(klass, format):
1662
del klass._formats[format.get_format_string()]
1665
return self.get_format_description().rstrip()
1667
def supports_tags(self):
1668
"""True if this format supports tags stored in the branch"""
1669
return False # by default
1672
class BranchHooks(Hooks):
1673
"""A dictionary mapping hook name to a list of callables for branch hooks.
1675
e.g. ['set_rh'] Is the list of items to be called when the
1676
set_revision_history function is invoked.
1680
"""Create the default hooks.
1682
These are all empty initially, because by default nothing should get
1685
Hooks.__init__(self)
1686
self.create_hook(HookPoint('set_rh',
1687
"Invoked whenever the revision history has been set via "
1688
"set_revision_history. The api signature is (branch, "
1689
"revision_history), and the branch will be write-locked. "
1690
"The set_rh hook can be expensive for bzr to trigger, a better "
1691
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1692
self.create_hook(HookPoint('open',
1693
"Called with the Branch object that has been opened after a "
1694
"branch is opened.", (1, 8), None))
1695
self.create_hook(HookPoint('post_push',
1696
"Called after a push operation completes. post_push is called "
1697
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1698
"bzr client.", (0, 15), None))
1699
self.create_hook(HookPoint('post_pull',
1700
"Called after a pull operation completes. post_pull is called "
1701
"with a bzrlib.branch.PullResult object and only runs in the "
1702
"bzr client.", (0, 15), None))
1703
self.create_hook(HookPoint('pre_commit',
1704
"Called after a commit is calculated but before it is is "
1705
"completed. pre_commit is called with (local, master, old_revno, "
1706
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1707
"). old_revid is NULL_REVISION for the first commit to a branch, "
1708
"tree_delta is a TreeDelta object describing changes from the "
1709
"basis revision. hooks MUST NOT modify this delta. "
1710
" future_tree is an in-memory tree obtained from "
1711
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1712
"tree.", (0,91), None))
1713
self.create_hook(HookPoint('post_commit',
1714
"Called in the bzr client after a commit has completed. "
1715
"post_commit is called with (local, master, old_revno, old_revid, "
1716
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1717
"commit to a branch.", (0, 15), None))
1718
self.create_hook(HookPoint('post_uncommit',
1719
"Called in the bzr client after an uncommit completes. "
1720
"post_uncommit is called with (local, master, old_revno, "
1721
"old_revid, new_revno, new_revid) where local is the local branch "
1722
"or None, master is the target branch, and an empty branch "
1723
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1724
self.create_hook(HookPoint('pre_change_branch_tip',
1725
"Called in bzr client and server before a change to the tip of a "
1726
"branch is made. pre_change_branch_tip is called with a "
1727
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1728
"commit, uncommit will all trigger this hook.", (1, 6), None))
1729
self.create_hook(HookPoint('post_change_branch_tip',
1730
"Called in bzr client and server after a change to the tip of a "
1731
"branch is made. post_change_branch_tip is called with a "
1732
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1733
"commit, uncommit will all trigger this hook.", (1, 4), None))
1734
self.create_hook(HookPoint('transform_fallback_location',
1735
"Called when a stacked branch is activating its fallback "
1736
"locations. transform_fallback_location is called with (branch, "
1737
"url), and should return a new url. Returning the same url "
1738
"allows it to be used as-is, returning a different one can be "
1739
"used to cause the branch to stack on a closer copy of that "
1740
"fallback_location. Note that the branch cannot have history "
1741
"accessing methods called on it during this hook because the "
1742
"fallback locations have not been activated. When there are "
1743
"multiple hooks installed for transform_fallback_location, "
1744
"all are called with the url returned from the previous hook."
1745
"The order is however undefined.", (1, 9), None))
1746
self.create_hook(HookPoint('automatic_tag_name',
1747
"Called to determine an automatic tag name for a revision."
1748
"automatic_tag_name is called with (branch, revision_id) and "
1749
"should return a tag name or None if no tag name could be "
1750
"determined. The first non-None tag name returned will be used.",
1755
# install the default hooks into the Branch class.
1756
Branch.hooks = BranchHooks()
1759
class ChangeBranchTipParams(object):
1760
"""Object holding parameters passed to *_change_branch_tip hooks.
1762
There are 5 fields that hooks may wish to access:
1764
:ivar branch: the branch being changed
1765
:ivar old_revno: revision number before the change
1766
:ivar new_revno: revision number after the change
1767
:ivar old_revid: revision id before the change
1768
:ivar new_revid: revision id after the change
1770
The revid fields are strings. The revno fields are integers.
1773
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1774
"""Create a group of ChangeBranchTip parameters.
1776
:param branch: The branch being changed.
1777
:param old_revno: Revision number before the change.
1778
:param new_revno: Revision number after the change.
1779
:param old_revid: Tip revision id before the change.
1780
:param new_revid: Tip revision id after the change.
1782
self.branch = branch
1783
self.old_revno = old_revno
1784
self.new_revno = new_revno
1785
self.old_revid = old_revid
1786
self.new_revid = new_revid
1788
def __eq__(self, other):
1789
return self.__dict__ == other.__dict__
1792
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1793
self.__class__.__name__, self.branch,
1794
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1797
class BzrBranchFormat4(BranchFormat):
1798
"""Bzr branch format 4.
1801
- a revision-history file.
1802
- a branch-lock lock file [ to be shared with the bzrdir ]
1805
def get_format_description(self):
1806
"""See BranchFormat.get_format_description()."""
1807
return "Branch format 4"
1809
def initialize(self, a_bzrdir, name=None):
1810
"""Create a branch of this format in a_bzrdir."""
1811
utf8_files = [('revision-history', ''),
1812
('branch-name', ''),
1814
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1815
lock_type='branch4', set_format=False)
1818
super(BzrBranchFormat4, self).__init__()
1819
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1821
def network_name(self):
1822
"""The network name for this format is the control dirs disk label."""
1823
return self._matchingbzrdir.get_format_string()
1825
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1826
"""See BranchFormat.open()."""
1828
# we are being called directly and must probe.
1829
raise NotImplementedError
1830
return BzrBranch(_format=self,
1831
_control_files=a_bzrdir._control_files,
1834
_repository=a_bzrdir.open_repository())
1837
return "Bazaar-NG branch format 4"
1840
class BranchFormatMetadir(BranchFormat):
1841
"""Common logic for meta-dir based branch formats."""
1843
def _branch_class(self):
1844
"""What class to instantiate on open calls."""
1845
raise NotImplementedError(self._branch_class)
1847
def network_name(self):
1848
"""A simple byte string uniquely identifying this format for RPC calls.
1850
Metadir branch formats use their format string.
1852
return self.get_format_string()
1854
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1855
"""See BranchFormat.open()."""
1857
format = BranchFormat.find_format(a_bzrdir, name=name)
1858
if format.__class__ != self.__class__:
1859
raise AssertionError("wrong format %r found for %r" %
1861
transport = a_bzrdir.get_branch_transport(None, name=name)
1863
control_files = lockable_files.LockableFiles(transport, 'lock',
1865
return self._branch_class()(_format=self,
1866
_control_files=control_files,
1869
_repository=a_bzrdir.find_repository(),
1870
ignore_fallbacks=ignore_fallbacks)
1871
except errors.NoSuchFile:
1872
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1875
super(BranchFormatMetadir, self).__init__()
1876
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1877
self._matchingbzrdir.set_branch_format(self)
1879
def supports_tags(self):
1883
class BzrBranchFormat5(BranchFormatMetadir):
1884
"""Bzr branch format 5.
1887
- a revision-history file.
1889
- a lock dir guarding the branch itself
1890
- all of this stored in a branch/ subdirectory
1891
- works with shared repositories.
1893
This format is new in bzr 0.8.
1896
def _branch_class(self):
1899
def get_format_string(self):
1900
"""See BranchFormat.get_format_string()."""
1901
return "Bazaar-NG branch format 5\n"
1903
def get_format_description(self):
1904
"""See BranchFormat.get_format_description()."""
1905
return "Branch format 5"
1907
def initialize(self, a_bzrdir, name=None):
1908
"""Create a branch of this format in a_bzrdir."""
1909
utf8_files = [('revision-history', ''),
1910
('branch-name', ''),
1912
return self._initialize_helper(a_bzrdir, utf8_files, name)
1914
def supports_tags(self):
1918
class BzrBranchFormat6(BranchFormatMetadir):
1919
"""Branch format with last-revision and tags.
1921
Unlike previous formats, this has no explicit revision history. Instead,
1922
this just stores the last-revision, and the left-hand history leading
1923
up to there is the history.
1925
This format was introduced in bzr 0.15
1926
and became the default in 0.91.
1929
def _branch_class(self):
1932
def get_format_string(self):
1933
"""See BranchFormat.get_format_string()."""
1934
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1936
def get_format_description(self):
1937
"""See BranchFormat.get_format_description()."""
1938
return "Branch format 6"
1940
def initialize(self, a_bzrdir, name=None):
1941
"""Create a branch of this format in a_bzrdir."""
1942
utf8_files = [('last-revision', '0 null:\n'),
1943
('branch.conf', ''),
1946
return self._initialize_helper(a_bzrdir, utf8_files, name)
1948
def make_tags(self, branch):
1949
"""See bzrlib.branch.BranchFormat.make_tags()."""
1950
return BasicTags(branch)
1952
def supports_set_append_revisions_only(self):
1956
class BzrBranchFormat8(BranchFormatMetadir):
1957
"""Metadir format supporting storing locations of subtree branches."""
1959
def _branch_class(self):
1962
def get_format_string(self):
1963
"""See BranchFormat.get_format_string()."""
1964
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1966
def get_format_description(self):
1967
"""See BranchFormat.get_format_description()."""
1968
return "Branch format 8"
1970
def initialize(self, a_bzrdir, name=None):
1971
"""Create a branch of this format in a_bzrdir."""
1972
utf8_files = [('last-revision', '0 null:\n'),
1973
('branch.conf', ''),
1977
return self._initialize_helper(a_bzrdir, utf8_files, name)
1980
super(BzrBranchFormat8, self).__init__()
1981
self._matchingbzrdir.repository_format = \
1982
RepositoryFormatKnitPack5RichRoot()
1984
def make_tags(self, branch):
1985
"""See bzrlib.branch.BranchFormat.make_tags()."""
1986
return BasicTags(branch)
1988
def supports_set_append_revisions_only(self):
1991
def supports_stacking(self):
1994
supports_reference_locations = True
1997
class BzrBranchFormat7(BzrBranchFormat8):
1998
"""Branch format with last-revision, tags, and a stacked location pointer.
2000
The stacked location pointer is passed down to the repository and requires
2001
a repository format with supports_external_lookups = True.
2003
This format was introduced in bzr 1.6.
2006
def initialize(self, a_bzrdir, name=None):
2007
"""Create a branch of this format in a_bzrdir."""
2008
utf8_files = [('last-revision', '0 null:\n'),
2009
('branch.conf', ''),
2012
return self._initialize_helper(a_bzrdir, utf8_files, name)
2014
def _branch_class(self):
2017
def get_format_string(self):
2018
"""See BranchFormat.get_format_string()."""
2019
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2021
def get_format_description(self):
2022
"""See BranchFormat.get_format_description()."""
2023
return "Branch format 7"
2025
def supports_set_append_revisions_only(self):
2028
supports_reference_locations = False
2031
class BranchReferenceFormat(BranchFormat):
2032
"""Bzr branch reference format.
2034
Branch references are used in implementing checkouts, they
2035
act as an alias to the real branch which is at some other url.
2042
def get_format_string(self):
2043
"""See BranchFormat.get_format_string()."""
2044
return "Bazaar-NG Branch Reference Format 1\n"
2046
def get_format_description(self):
2047
"""See BranchFormat.get_format_description()."""
2048
return "Checkout reference format 1"
2050
def get_reference(self, a_bzrdir):
2051
"""See BranchFormat.get_reference()."""
2052
transport = a_bzrdir.get_branch_transport(None)
2053
return transport.get_bytes('location')
2055
def set_reference(self, a_bzrdir, to_branch):
2056
"""See BranchFormat.set_reference()."""
2057
transport = a_bzrdir.get_branch_transport(None)
2058
location = transport.put_bytes('location', to_branch.base)
2060
def initialize(self, a_bzrdir, name=None, target_branch=None):
2061
"""Create a branch of this format in a_bzrdir."""
2062
if target_branch is None:
2063
# this format does not implement branch itself, thus the implicit
2064
# creation contract must see it as uninitializable
2065
raise errors.UninitializableFormat(self)
2066
mutter('creating branch reference in %s', a_bzrdir.user_url)
2067
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
2068
branch_transport.put_bytes('location',
2069
target_branch.bzrdir.user_url)
2070
branch_transport.put_bytes('format', self.get_format_string())
2072
a_bzrdir, name, _found=True,
2073
possible_transports=[target_branch.bzrdir.root_transport])
2076
super(BranchReferenceFormat, self).__init__()
2077
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2078
self._matchingbzrdir.set_branch_format(self)
2080
def _make_reference_clone_function(format, a_branch):
2081
"""Create a clone() routine for a branch dynamically."""
2082
def clone(to_bzrdir, revision_id=None,
2083
repository_policy=None):
2084
"""See Branch.clone()."""
2085
return format.initialize(to_bzrdir, target_branch=a_branch)
2086
# cannot obey revision_id limits when cloning a reference ...
2087
# FIXME RBC 20060210 either nuke revision_id for clone, or
2088
# emit some sort of warning/error to the caller ?!
2091
def open(self, a_bzrdir, name=None, _found=False, location=None,
2092
possible_transports=None, ignore_fallbacks=False):
2093
"""Return the branch that the branch reference in a_bzrdir points at.
2095
:param a_bzrdir: A BzrDir that contains a branch.
2096
:param name: Name of colocated branch to open, if any
2097
:param _found: a private parameter, do not use it. It is used to
2098
indicate if format probing has already be done.
2099
:param ignore_fallbacks: when set, no fallback branches will be opened
2100
(if there are any). Default is to open fallbacks.
2101
:param location: The location of the referenced branch. If
2102
unspecified, this will be determined from the branch reference in
2104
:param possible_transports: An optional reusable transports list.
2107
format = BranchFormat.find_format(a_bzrdir, name=name)
2108
if format.__class__ != self.__class__:
2109
raise AssertionError("wrong format %r found for %r" %
2111
if location is None:
2112
location = self.get_reference(a_bzrdir)
2113
real_bzrdir = bzrdir.BzrDir.open(
2114
location, possible_transports=possible_transports)
2115
result = real_bzrdir.open_branch(name=name,
2116
ignore_fallbacks=ignore_fallbacks)
2117
# this changes the behaviour of result.clone to create a new reference
2118
# rather than a copy of the content of the branch.
2119
# I did not use a proxy object because that needs much more extensive
2120
# testing, and we are only changing one behaviour at the moment.
2121
# If we decide to alter more behaviours - i.e. the implicit nickname
2122
# then this should be refactored to introduce a tested proxy branch
2123
# and a subclass of that for use in overriding clone() and ....
2125
result.clone = self._make_reference_clone_function(result)
2129
network_format_registry = registry.FormatRegistry()
2130
"""Registry of formats indexed by their network name.
2132
The network name for a branch format is an identifier that can be used when
2133
referring to formats with smart server operations. See
2134
BranchFormat.network_name() for more detail.
2138
# formats which have no format string are not discoverable
2139
# and not independently creatable, so are not registered.
2140
__format5 = BzrBranchFormat5()
2141
__format6 = BzrBranchFormat6()
2142
__format7 = BzrBranchFormat7()
2143
__format8 = BzrBranchFormat8()
2144
BranchFormat.register_format(__format5)
2145
BranchFormat.register_format(BranchReferenceFormat())
2146
BranchFormat.register_format(__format6)
2147
BranchFormat.register_format(__format7)
2148
BranchFormat.register_format(__format8)
2149
BranchFormat.set_default_format(__format7)
2150
_legacy_formats = [BzrBranchFormat4(),
2152
network_format_registry.register(
2153
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2156
class BzrBranch(Branch, _RelockDebugMixin):
2157
"""A branch stored in the actual filesystem.
2159
Note that it's "local" in the context of the filesystem; it doesn't
2160
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2161
it's writable, and can be accessed via the normal filesystem API.
2163
:ivar _transport: Transport for file operations on this branch's
2164
control files, typically pointing to the .bzr/branch directory.
2165
:ivar repository: Repository for this branch.
2166
:ivar base: The url of the base directory for this branch; the one
2167
containing the .bzr directory.
2168
:ivar name: Optional colocated branch name as it exists in the control
2172
def __init__(self, _format=None,
2173
_control_files=None, a_bzrdir=None, name=None,
2174
_repository=None, ignore_fallbacks=False):
2175
"""Create new branch object at a particular location."""
2176
if a_bzrdir is None:
2177
raise ValueError('a_bzrdir must be supplied')
2179
self.bzrdir = a_bzrdir
2180
self._base = self.bzrdir.transport.clone('..').base
2182
# XXX: We should be able to just do
2183
# self.base = self.bzrdir.root_transport.base
2184
# but this does not quite work yet -- mbp 20080522
2185
self._format = _format
2186
if _control_files is None:
2187
raise ValueError('BzrBranch _control_files is None')
2188
self.control_files = _control_files
2189
self._transport = _control_files._transport
2190
self.repository = _repository
2191
Branch.__init__(self)
2194
if self.name is None:
2195
return '%s(%s)' % (self.__class__.__name__, self.user_url)
2197
return '%s(%s,%s)' % (self.__class__.__name__, self.user_url,
2202
def _get_base(self):
2203
"""Returns the directory containing the control directory."""
2206
base = property(_get_base, doc="The URL for the root of this branch.")
2208
def _get_config(self):
2209
return TransportConfig(self._transport, 'branch.conf')
2211
def is_locked(self):
2212
return self.control_files.is_locked()
2214
def lock_write(self, token=None):
2215
if not self.is_locked():
2216
self._note_lock('w')
2217
# All-in-one needs to always unlock/lock.
2218
repo_control = getattr(self.repository, 'control_files', None)
2219
if self.control_files == repo_control or not self.is_locked():
2220
self.repository._warn_if_deprecated(self)
2221
self.repository.lock_write()
2226
return self.control_files.lock_write(token=token)
2229
self.repository.unlock()
2232
def lock_read(self):
2233
if not self.is_locked():
2234
self._note_lock('r')
2235
# All-in-one needs to always unlock/lock.
2236
repo_control = getattr(self.repository, 'control_files', None)
2237
if self.control_files == repo_control or not self.is_locked():
2238
self.repository._warn_if_deprecated(self)
2239
self.repository.lock_read()
2244
self.control_files.lock_read()
2247
self.repository.unlock()
2250
@only_raises(errors.LockNotHeld, errors.LockBroken)
2253
self.control_files.unlock()
2255
# All-in-one needs to always unlock/lock.
2256
repo_control = getattr(self.repository, 'control_files', None)
2257
if (self.control_files == repo_control or
2258
not self.control_files.is_locked()):
2259
self.repository.unlock()
2260
if not self.control_files.is_locked():
2261
# we just released the lock
2262
self._clear_cached_state()
2264
def peek_lock_mode(self):
2265
if self.control_files._lock_count == 0:
2268
return self.control_files._lock_mode
2270
def get_physical_lock_status(self):
2271
return self.control_files.get_physical_lock_status()
2274
def print_file(self, file, revision_id):
2275
"""See Branch.print_file."""
2276
return self.repository.print_file(file, revision_id)
2278
def _write_revision_history(self, history):
2279
"""Factored out of set_revision_history.
2281
This performs the actual writing to disk.
2282
It is intended to be called by BzrBranch5.set_revision_history."""
2283
self._transport.put_bytes(
2284
'revision-history', '\n'.join(history),
2285
mode=self.bzrdir._get_file_mode())
2288
def set_revision_history(self, rev_history):
2289
"""See Branch.set_revision_history."""
2290
if 'evil' in debug.debug_flags:
2291
mutter_callsite(3, "set_revision_history scales with history.")
2292
check_not_reserved_id = _mod_revision.check_not_reserved_id
2293
for rev_id in rev_history:
2294
check_not_reserved_id(rev_id)
2295
if Branch.hooks['post_change_branch_tip']:
2296
# Don't calculate the last_revision_info() if there are no hooks
2298
old_revno, old_revid = self.last_revision_info()
2299
if len(rev_history) == 0:
2300
revid = _mod_revision.NULL_REVISION
2302
revid = rev_history[-1]
2303
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2304
self._write_revision_history(rev_history)
2305
self._clear_cached_state()
2306
self._cache_revision_history(rev_history)
2307
for hook in Branch.hooks['set_rh']:
2308
hook(self, rev_history)
2309
if Branch.hooks['post_change_branch_tip']:
2310
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2312
def _synchronize_history(self, destination, revision_id):
2313
"""Synchronize last revision and revision history between branches.
2315
This version is most efficient when the destination is also a
2316
BzrBranch5, but works for BzrBranch6 as long as the revision
2317
history is the true lefthand parent history, and all of the revisions
2318
are in the destination's repository. If not, set_revision_history
2321
:param destination: The branch to copy the history into
2322
:param revision_id: The revision-id to truncate history at. May
2323
be None to copy complete history.
2325
if not isinstance(destination._format, BzrBranchFormat5):
2326
super(BzrBranch, self)._synchronize_history(
2327
destination, revision_id)
2329
if revision_id == _mod_revision.NULL_REVISION:
2332
new_history = self.revision_history()
2333
if revision_id is not None and new_history != []:
2335
new_history = new_history[:new_history.index(revision_id) + 1]
2337
rev = self.repository.get_revision(revision_id)
2338
new_history = rev.get_history(self.repository)[1:]
2339
destination.set_revision_history(new_history)
2342
def set_last_revision_info(self, revno, revision_id):
2343
"""Set the last revision of this branch.
2345
The caller is responsible for checking that the revno is correct
2346
for this revision id.
2348
It may be possible to set the branch last revision to an id not
2349
present in the repository. However, branches can also be
2350
configured to check constraints on history, in which case this may not
2353
revision_id = _mod_revision.ensure_null(revision_id)
2354
# this old format stores the full history, but this api doesn't
2355
# provide it, so we must generate, and might as well check it's
2357
history = self._lefthand_history(revision_id)
2358
if len(history) != revno:
2359
raise AssertionError('%d != %d' % (len(history), revno))
2360
self.set_revision_history(history)
2362
def _gen_revision_history(self):
2363
history = self._transport.get_bytes('revision-history').split('\n')
2364
if history[-1:] == ['']:
2365
# There shouldn't be a trailing newline, but just in case.
2370
def generate_revision_history(self, revision_id, last_rev=None,
2372
"""Create a new revision history that will finish with revision_id.
2374
:param revision_id: the new tip to use.
2375
:param last_rev: The previous last_revision. If not None, then this
2376
must be a ancestory of revision_id, or DivergedBranches is raised.
2377
:param other_branch: The other branch that DivergedBranches should
2378
raise with respect to.
2380
self.set_revision_history(self._lefthand_history(revision_id,
2381
last_rev, other_branch))
2383
def basis_tree(self):
2384
"""See Branch.basis_tree."""
2385
return self.repository.revision_tree(self.last_revision())
2387
def _get_parent_location(self):
2388
_locs = ['parent', 'pull', 'x-pull']
2391
return self._transport.get_bytes(l).strip('\n')
2392
except errors.NoSuchFile:
2396
def _basic_push(self, target, overwrite, stop_revision):
2397
"""Basic implementation of push without bound branches or hooks.
2399
Must be called with source read locked and target write locked.
2401
result = BranchPushResult()
2402
result.source_branch = self
2403
result.target_branch = target
2404
result.old_revno, result.old_revid = target.last_revision_info()
2405
self.update_references(target)
2406
if result.old_revid != self.last_revision():
2407
# We assume that during 'push' this repository is closer than
2409
graph = self.repository.get_graph(target.repository)
2410
target.update_revisions(self, stop_revision,
2411
overwrite=overwrite, graph=graph)
2412
if self._push_should_merge_tags():
2413
result.tag_conflicts = self.tags.merge_to(target.tags,
2415
result.new_revno, result.new_revid = target.last_revision_info()
2418
def get_stacked_on_url(self):
2419
raise errors.UnstackableBranchFormat(self._format, self.user_url)
2421
def set_push_location(self, location):
2422
"""See Branch.set_push_location."""
2423
self.get_config().set_user_option(
2424
'push_location', location,
2425
store=_mod_config.STORE_LOCATION_NORECURSE)
2427
def _set_parent_location(self, url):
2429
self._transport.delete('parent')
2431
self._transport.put_bytes('parent', url + '\n',
2432
mode=self.bzrdir._get_file_mode())
2435
class BzrBranch5(BzrBranch):
2436
"""A format 5 branch. This supports new features over plain branches.
2438
It has support for a master_branch which is the data for bound branches.
2441
def get_bound_location(self):
2443
return self._transport.get_bytes('bound')[:-1]
2444
except errors.NoSuchFile:
2448
def get_master_branch(self, possible_transports=None):
2449
"""Return the branch we are bound to.
2451
:return: Either a Branch, or None
2453
This could memoise the branch, but if thats done
2454
it must be revalidated on each new lock.
2455
So for now we just don't memoise it.
2456
# RBC 20060304 review this decision.
2458
bound_loc = self.get_bound_location()
2462
return Branch.open(bound_loc,
2463
possible_transports=possible_transports)
2464
except (errors.NotBranchError, errors.ConnectionError), e:
2465
raise errors.BoundBranchConnectionFailure(
2469
def set_bound_location(self, location):
2470
"""Set the target where this branch is bound to.
2472
:param location: URL to the target branch
2475
self._transport.put_bytes('bound', location+'\n',
2476
mode=self.bzrdir._get_file_mode())
2479
self._transport.delete('bound')
2480
except errors.NoSuchFile:
2485
def bind(self, other):
2486
"""Bind this branch to the branch other.
2488
This does not push or pull data between the branches, though it does
2489
check for divergence to raise an error when the branches are not
2490
either the same, or one a prefix of the other. That behaviour may not
2491
be useful, so that check may be removed in future.
2493
:param other: The branch to bind to
2496
# TODO: jam 20051230 Consider checking if the target is bound
2497
# It is debatable whether you should be able to bind to
2498
# a branch which is itself bound.
2499
# Committing is obviously forbidden,
2500
# but binding itself may not be.
2501
# Since we *have* to check at commit time, we don't
2502
# *need* to check here
2504
# we want to raise diverged if:
2505
# last_rev is not in the other_last_rev history, AND
2506
# other_last_rev is not in our history, and do it without pulling
2508
self.set_bound_location(other.base)
2512
"""If bound, unbind"""
2513
return self.set_bound_location(None)
2516
def update(self, possible_transports=None):
2517
"""Synchronise this branch with the master branch if any.
2519
:return: None or the last_revision that was pivoted out during the
2522
master = self.get_master_branch(possible_transports)
2523
if master is not None:
2524
old_tip = _mod_revision.ensure_null(self.last_revision())
2525
self.pull(master, overwrite=True)
2526
if self.repository.get_graph().is_ancestor(old_tip,
2527
_mod_revision.ensure_null(self.last_revision())):
2533
class BzrBranch8(BzrBranch5):
2534
"""A branch that stores tree-reference locations."""
2536
def _open_hook(self):
2537
if self._ignore_fallbacks:
2540
url = self.get_stacked_on_url()
2541
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2542
errors.UnstackableBranchFormat):
2545
for hook in Branch.hooks['transform_fallback_location']:
2546
url = hook(self, url)
2548
hook_name = Branch.hooks.get_hook_name(hook)
2549
raise AssertionError(
2550
"'transform_fallback_location' hook %s returned "
2551
"None, not a URL." % hook_name)
2552
self._activate_fallback_location(url)
2554
def __init__(self, *args, **kwargs):
2555
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2556
super(BzrBranch8, self).__init__(*args, **kwargs)
2557
self._last_revision_info_cache = None
2558
self._reference_info = None
2560
def _clear_cached_state(self):
2561
super(BzrBranch8, self)._clear_cached_state()
2562
self._last_revision_info_cache = None
2563
self._reference_info = None
2565
def _last_revision_info(self):
2566
revision_string = self._transport.get_bytes('last-revision')
2567
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2568
revision_id = cache_utf8.get_cached_utf8(revision_id)
2570
return revno, revision_id
2572
def _write_last_revision_info(self, revno, revision_id):
2573
"""Simply write out the revision id, with no checks.
2575
Use set_last_revision_info to perform this safely.
2577
Does not update the revision_history cache.
2578
Intended to be called by set_last_revision_info and
2579
_write_revision_history.
2581
revision_id = _mod_revision.ensure_null(revision_id)
2582
out_string = '%d %s\n' % (revno, revision_id)
2583
self._transport.put_bytes('last-revision', out_string,
2584
mode=self.bzrdir._get_file_mode())
2587
def set_last_revision_info(self, revno, revision_id):
2588
revision_id = _mod_revision.ensure_null(revision_id)
2589
old_revno, old_revid = self.last_revision_info()
2590
if self._get_append_revisions_only():
2591
self._check_history_violation(revision_id)
2592
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2593
self._write_last_revision_info(revno, revision_id)
2594
self._clear_cached_state()
2595
self._last_revision_info_cache = revno, revision_id
2596
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2598
def _synchronize_history(self, destination, revision_id):
2599
"""Synchronize last revision and revision history between branches.
2601
:see: Branch._synchronize_history
2603
# XXX: The base Branch has a fast implementation of this method based
2604
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2605
# that uses set_revision_history. This class inherits from BzrBranch5,
2606
# but wants the fast implementation, so it calls
2607
# Branch._synchronize_history directly.
2608
Branch._synchronize_history(self, destination, revision_id)
2610
def _check_history_violation(self, revision_id):
2611
last_revision = _mod_revision.ensure_null(self.last_revision())
2612
if _mod_revision.is_null(last_revision):
2614
if last_revision not in self._lefthand_history(revision_id):
2615
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2617
def _gen_revision_history(self):
2618
"""Generate the revision history from last revision
2620
last_revno, last_revision = self.last_revision_info()
2621
self._extend_partial_history(stop_index=last_revno-1)
2622
return list(reversed(self._partial_revision_history_cache))
2624
def _write_revision_history(self, history):
2625
"""Factored out of set_revision_history.
2627
This performs the actual writing to disk, with format-specific checks.
2628
It is intended to be called by BzrBranch5.set_revision_history.
2630
if len(history) == 0:
2631
last_revision = 'null:'
2633
if history != self._lefthand_history(history[-1]):
2634
raise errors.NotLefthandHistory(history)
2635
last_revision = history[-1]
2636
if self._get_append_revisions_only():
2637
self._check_history_violation(last_revision)
2638
self._write_last_revision_info(len(history), last_revision)
2641
def _set_parent_location(self, url):
2642
"""Set the parent branch"""
2643
self._set_config_location('parent_location', url, make_relative=True)
2646
def _get_parent_location(self):
2647
"""Set the parent branch"""
2648
return self._get_config_location('parent_location')
2651
def _set_all_reference_info(self, info_dict):
2652
"""Replace all reference info stored in a branch.
2654
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2657
writer = rio.RioWriter(s)
2658
for key, (tree_path, branch_location) in info_dict.iteritems():
2659
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2660
branch_location=branch_location)
2661
writer.write_stanza(stanza)
2662
self._transport.put_bytes('references', s.getvalue())
2663
self._reference_info = info_dict
2666
def _get_all_reference_info(self):
2667
"""Return all the reference info stored in a branch.
2669
:return: A dict of {file_id: (tree_path, branch_location)}
2671
if self._reference_info is not None:
2672
return self._reference_info
2673
rio_file = self._transport.get('references')
2675
stanzas = rio.read_stanzas(rio_file)
2676
info_dict = dict((s['file_id'], (s['tree_path'],
2677
s['branch_location'])) for s in stanzas)
2680
self._reference_info = info_dict
2683
def set_reference_info(self, file_id, tree_path, branch_location):
2684
"""Set the branch location to use for a tree reference.
2686
:param file_id: The file-id of the tree reference.
2687
:param tree_path: The path of the tree reference in the tree.
2688
:param branch_location: The location of the branch to retrieve tree
2691
info_dict = self._get_all_reference_info()
2692
info_dict[file_id] = (tree_path, branch_location)
2693
if None in (tree_path, branch_location):
2694
if tree_path is not None:
2695
raise ValueError('tree_path must be None when branch_location'
2697
if branch_location is not None:
2698
raise ValueError('branch_location must be None when tree_path'
2700
del info_dict[file_id]
2701
self._set_all_reference_info(info_dict)
2703
def get_reference_info(self, file_id):
2704
"""Get the tree_path and branch_location for a tree reference.
2706
:return: a tuple of (tree_path, branch_location)
2708
return self._get_all_reference_info().get(file_id, (None, None))
2710
def reference_parent(self, file_id, path, possible_transports=None):
2711
"""Return the parent branch for a tree-reference file_id.
2713
:param file_id: The file_id of the tree reference
2714
:param path: The path of the file_id in the tree
2715
:return: A branch associated with the file_id
2717
branch_location = self.get_reference_info(file_id)[1]
2718
if branch_location is None:
2719
return Branch.reference_parent(self, file_id, path,
2720
possible_transports)
2721
branch_location = urlutils.join(self.user_url, branch_location)
2722
return Branch.open(branch_location,
2723
possible_transports=possible_transports)
2725
def set_push_location(self, location):
2726
"""See Branch.set_push_location."""
2727
self._set_config_location('push_location', location)
2729
def set_bound_location(self, location):
2730
"""See Branch.set_push_location."""
2732
config = self.get_config()
2733
if location is None:
2734
if config.get_user_option('bound') != 'True':
2737
config.set_user_option('bound', 'False', warn_masked=True)
2740
self._set_config_location('bound_location', location,
2742
config.set_user_option('bound', 'True', warn_masked=True)
2745
def _get_bound_location(self, bound):
2746
"""Return the bound location in the config file.
2748
Return None if the bound parameter does not match"""
2749
config = self.get_config()
2750
config_bound = (config.get_user_option('bound') == 'True')
2751
if config_bound != bound:
2753
return self._get_config_location('bound_location', config=config)
2755
def get_bound_location(self):
2756
"""See Branch.set_push_location."""
2757
return self._get_bound_location(True)
2759
def get_old_bound_location(self):
2760
"""See Branch.get_old_bound_location"""
2761
return self._get_bound_location(False)
2763
def get_stacked_on_url(self):
2764
# you can always ask for the URL; but you might not be able to use it
2765
# if the repo can't support stacking.
2766
## self._check_stackable_repo()
2767
stacked_url = self._get_config_location('stacked_on_location')
2768
if stacked_url is None:
2769
raise errors.NotStacked(self)
2772
def _get_append_revisions_only(self):
2773
value = self.get_config().get_user_option('append_revisions_only')
2774
return value == 'True'
2777
def generate_revision_history(self, revision_id, last_rev=None,
2779
"""See BzrBranch5.generate_revision_history"""
2780
history = self._lefthand_history(revision_id, last_rev, other_branch)
2781
revno = len(history)
2782
self.set_last_revision_info(revno, revision_id)
2785
def get_rev_id(self, revno, history=None):
2786
"""Find the revision id of the specified revno."""
2788
return _mod_revision.NULL_REVISION
2790
last_revno, last_revision_id = self.last_revision_info()
2791
if revno <= 0 or revno > last_revno:
2792
raise errors.NoSuchRevision(self, revno)
2794
if history is not None:
2795
return history[revno - 1]
2797
index = last_revno - revno
2798
if len(self._partial_revision_history_cache) <= index:
2799
self._extend_partial_history(stop_index=index)
2800
if len(self._partial_revision_history_cache) > index:
2801
return self._partial_revision_history_cache[index]
2803
raise errors.NoSuchRevision(self, revno)
2806
def revision_id_to_revno(self, revision_id):
2807
"""Given a revision id, return its revno"""
2808
if _mod_revision.is_null(revision_id):
2811
index = self._partial_revision_history_cache.index(revision_id)
2813
self._extend_partial_history(stop_revision=revision_id)
2814
index = len(self._partial_revision_history_cache) - 1
2815
if self._partial_revision_history_cache[index] != revision_id:
2816
raise errors.NoSuchRevision(self, revision_id)
2817
return self.revno() - index
2820
class BzrBranch7(BzrBranch8):
2821
"""A branch with support for a fallback repository."""
2823
def set_reference_info(self, file_id, tree_path, branch_location):
2824
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2826
def get_reference_info(self, file_id):
2827
Branch.get_reference_info(self, file_id)
2829
def reference_parent(self, file_id, path, possible_transports=None):
2830
return Branch.reference_parent(self, file_id, path,
2831
possible_transports)
2834
class BzrBranch6(BzrBranch7):
2835
"""See BzrBranchFormat6 for the capabilities of this branch.
2837
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2841
def get_stacked_on_url(self):
2842
raise errors.UnstackableBranchFormat(self._format, self.user_url)
2845
######################################################################
2846
# results of operations
2849
class _Result(object):
2851
def _show_tag_conficts(self, to_file):
2852
if not getattr(self, 'tag_conflicts', None):
2854
to_file.write('Conflicting tags:\n')
2855
for name, value1, value2 in self.tag_conflicts:
2856
to_file.write(' %s\n' % (name, ))
2859
class PullResult(_Result):
2860
"""Result of a Branch.pull operation.
2862
:ivar old_revno: Revision number before pull.
2863
:ivar new_revno: Revision number after pull.
2864
:ivar old_revid: Tip revision id before pull.
2865
:ivar new_revid: Tip revision id after pull.
2866
:ivar source_branch: Source (local) branch object. (read locked)
2867
:ivar master_branch: Master branch of the target, or the target if no
2869
:ivar local_branch: target branch if there is a Master, else None
2870
:ivar target_branch: Target/destination branch object. (write locked)
2871
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2875
# DEPRECATED: pull used to return the change in revno
2876
return self.new_revno - self.old_revno
2878
def report(self, to_file):
2880
if self.old_revid == self.new_revid:
2881
to_file.write('No revisions to pull.\n')
2883
to_file.write('Now on revision %d.\n' % self.new_revno)
2884
self._show_tag_conficts(to_file)
2887
class BranchPushResult(_Result):
2888
"""Result of a Branch.push operation.
2890
:ivar old_revno: Revision number (eg 10) of the target before push.
2891
:ivar new_revno: Revision number (eg 12) of the target after push.
2892
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2894
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2896
:ivar source_branch: Source branch object that the push was from. This is
2897
read locked, and generally is a local (and thus low latency) branch.
2898
:ivar master_branch: If target is a bound branch, the master branch of
2899
target, or target itself. Always write locked.
2900
:ivar target_branch: The direct Branch where data is being sent (write
2902
:ivar local_branch: If the target is a bound branch this will be the
2903
target, otherwise it will be None.
2907
# DEPRECATED: push used to return the change in revno
2908
return self.new_revno - self.old_revno
2910
def report(self, to_file):
2911
"""Write a human-readable description of the result."""
2912
if self.old_revid == self.new_revid:
2913
note('No new revisions to push.')
2915
note('Pushed up to revision %d.' % self.new_revno)
2916
self._show_tag_conficts(to_file)
2919
class BranchCheckResult(object):
2920
"""Results of checking branch consistency.
2925
def __init__(self, branch):
2926
self.branch = branch
2929
def report_results(self, verbose):
2930
"""Report the check results via trace.note.
2932
:param verbose: Requests more detailed display of what was checked,
2935
note('checked branch %s format %s', self.branch.user_url,
2936
self.branch._format)
2937
for error in self.errors:
2938
note('found error:%s', error)
2941
class Converter5to6(object):
2942
"""Perform an in-place upgrade of format 5 to format 6"""
2944
def convert(self, branch):
2945
# Data for 5 and 6 can peacefully coexist.
2946
format = BzrBranchFormat6()
2947
new_branch = format.open(branch.bzrdir, _found=True)
2949
# Copy source data into target
2950
new_branch._write_last_revision_info(*branch.last_revision_info())
2951
new_branch.set_parent(branch.get_parent())
2952
new_branch.set_bound_location(branch.get_bound_location())
2953
new_branch.set_push_location(branch.get_push_location())
2955
# New branch has no tags by default
2956
new_branch.tags._set_tag_dict({})
2958
# Copying done; now update target format
2959
new_branch._transport.put_bytes('format',
2960
format.get_format_string(),
2961
mode=new_branch.bzrdir._get_file_mode())
2963
# Clean up old files
2964
new_branch._transport.delete('revision-history')
2966
branch.set_parent(None)
2967
except errors.NoSuchFile:
2969
branch.set_bound_location(None)
2972
class Converter6to7(object):
2973
"""Perform an in-place upgrade of format 6 to format 7"""
2975
def convert(self, branch):
2976
format = BzrBranchFormat7()
2977
branch._set_config_location('stacked_on_location', '')
2978
# update target format
2979
branch._transport.put_bytes('format', format.get_format_string())
2982
class Converter7to8(object):
2983
"""Perform an in-place upgrade of format 6 to format 7"""
2985
def convert(self, branch):
2986
format = BzrBranchFormat8()
2987
branch._transport.put_bytes('references', '')
2988
# update target format
2989
branch._transport.put_bytes('format', format.get_format_string())
2992
def _run_with_write_locked_target(target, callable, *args, **kwargs):
2993
"""Run ``callable(*args, **kwargs)``, write-locking target for the
2996
_run_with_write_locked_target will attempt to release the lock it acquires.
2998
If an exception is raised by callable, then that exception *will* be
2999
propagated, even if the unlock attempt raises its own error. Thus
3000
_run_with_write_locked_target should be preferred to simply doing::
3004
return callable(*args, **kwargs)
3009
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3010
# should share code?
3013
result = callable(*args, **kwargs)
3015
exc_info = sys.exc_info()
3019
raise exc_info[0], exc_info[1], exc_info[2]
3025
class InterBranch(InterObject):
3026
"""This class represents operations taking place between two branches.
3028
Its instances have methods like pull() and push() and contain
3029
references to the source and target repositories these operations
3030
can be carried out on.
3034
"""The available optimised InterBranch types."""
3037
def _get_branch_formats_to_test():
3038
"""Return a tuple with the Branch formats to use when testing."""
3039
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3041
def pull(self, overwrite=False, stop_revision=None,
3042
possible_transports=None, local=False):
3043
"""Mirror source into target branch.
3045
The target branch is considered to be 'local', having low latency.
3047
:returns: PullResult instance
3049
raise NotImplementedError(self.pull)
3051
def update_revisions(self, stop_revision=None, overwrite=False,
3053
"""Pull in new perfect-fit revisions.
3055
:param stop_revision: Updated until the given revision
3056
:param overwrite: Always set the branch pointer, rather than checking
3057
to see if it is a proper descendant.
3058
:param graph: A Graph object that can be used to query history
3059
information. This can be None.
3062
raise NotImplementedError(self.update_revisions)
3064
def push(self, overwrite=False, stop_revision=None,
3065
_override_hook_source_branch=None):
3066
"""Mirror the source branch into the target branch.
3068
The source branch is considered to be 'local', having low latency.
3070
raise NotImplementedError(self.push)
3073
class GenericInterBranch(InterBranch):
3074
"""InterBranch implementation that uses public Branch functions.
3078
def _get_branch_formats_to_test():
3079
return BranchFormat._default_format, BranchFormat._default_format
3081
def update_revisions(self, stop_revision=None, overwrite=False,
3083
"""See InterBranch.update_revisions()."""
3084
self.source.lock_read()
3086
other_revno, other_last_revision = self.source.last_revision_info()
3087
stop_revno = None # unknown
3088
if stop_revision is None:
3089
stop_revision = other_last_revision
3090
if _mod_revision.is_null(stop_revision):
3091
# if there are no commits, we're done.
3093
stop_revno = other_revno
3095
# what's the current last revision, before we fetch [and change it
3097
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3098
# we fetch here so that we don't process data twice in the common
3099
# case of having something to pull, and so that the check for
3100
# already merged can operate on the just fetched graph, which will
3101
# be cached in memory.
3102
self.target.fetch(self.source, stop_revision)
3103
# Check to see if one is an ancestor of the other
3106
graph = self.target.repository.get_graph()
3107
if self.target._check_if_descendant_or_diverged(
3108
stop_revision, last_rev, graph, self.source):
3109
# stop_revision is a descendant of last_rev, but we aren't
3110
# overwriting, so we're done.
3112
if stop_revno is None:
3114
graph = self.target.repository.get_graph()
3115
this_revno, this_last_revision = \
3116
self.target.last_revision_info()
3117
stop_revno = graph.find_distance_to_null(stop_revision,
3118
[(other_last_revision, other_revno),
3119
(this_last_revision, this_revno)])
3120
self.target.set_last_revision_info(stop_revno, stop_revision)
3122
self.source.unlock()
3124
def pull(self, overwrite=False, stop_revision=None,
3125
possible_transports=None, _hook_master=None, run_hooks=True,
3126
_override_hook_target=None, local=False):
3129
:param _hook_master: Private parameter - set the branch to
3130
be supplied as the master to pull hooks.
3131
:param run_hooks: Private parameter - if false, this branch
3132
is being called because it's the master of the primary branch,
3133
so it should not run its hooks.
3134
:param _override_hook_target: Private parameter - set the branch to be
3135
supplied as the target_branch to pull hooks.
3136
:param local: Only update the local branch, and not the bound branch.
3138
# This type of branch can't be bound.
3140
raise errors.LocalRequiresBoundBranch()
3141
result = PullResult()
3142
result.source_branch = self.source
3143
if _override_hook_target is None:
3144
result.target_branch = self.target
3146
result.target_branch = _override_hook_target
3147
self.source.lock_read()
3149
# We assume that during 'pull' the target repository is closer than
3151
self.source.update_references(self.target)
3152
graph = self.target.repository.get_graph(self.source.repository)
3153
# TODO: Branch formats should have a flag that indicates
3154
# that revno's are expensive, and pull() should honor that flag.
3156
result.old_revno, result.old_revid = \
3157
self.target.last_revision_info()
3158
self.target.update_revisions(self.source, stop_revision,
3159
overwrite=overwrite, graph=graph)
3160
# TODO: The old revid should be specified when merging tags,
3161
# so a tags implementation that versions tags can only
3162
# pull in the most recent changes. -- JRV20090506
3163
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3165
result.new_revno, result.new_revid = self.target.last_revision_info()
3167
result.master_branch = _hook_master
3168
result.local_branch = result.target_branch
3170
result.master_branch = result.target_branch
3171
result.local_branch = None
3173
for hook in Branch.hooks['post_pull']:
3176
self.source.unlock()
3179
def push(self, overwrite=False, stop_revision=None,
3180
_override_hook_source_branch=None):
3181
"""See InterBranch.push.
3183
This is the basic concrete implementation of push()
3185
:param _override_hook_source_branch: If specified, run
3186
the hooks passing this Branch as the source, rather than self.
3187
This is for use of RemoteBranch, where push is delegated to the
3188
underlying vfs-based Branch.
3190
# TODO: Public option to disable running hooks - should be trivial but
3192
self.source.lock_read()
3194
return _run_with_write_locked_target(
3195
self.target, self._push_with_bound_branches, overwrite,
3197
_override_hook_source_branch=_override_hook_source_branch)
3199
self.source.unlock()
3201
def _push_with_bound_branches(self, overwrite, stop_revision,
3202
_override_hook_source_branch=None):
3203
"""Push from source into target, and into target's master if any.
3206
if _override_hook_source_branch:
3207
result.source_branch = _override_hook_source_branch
3208
for hook in Branch.hooks['post_push']:
3211
bound_location = self.target.get_bound_location()
3212
if bound_location and self.target.base != bound_location:
3213
# there is a master branch.
3215
# XXX: Why the second check? Is it even supported for a branch to
3216
# be bound to itself? -- mbp 20070507
3217
master_branch = self.target.get_master_branch()
3218
master_branch.lock_write()
3220
# push into the master from the source branch.
3221
self.source._basic_push(master_branch, overwrite, stop_revision)
3222
# and push into the target branch from the source. Note that we
3223
# push from the source branch again, because its considered the
3224
# highest bandwidth repository.
3225
result = self.source._basic_push(self.target, overwrite,
3227
result.master_branch = master_branch
3228
result.local_branch = self.target
3232
master_branch.unlock()
3235
result = self.source._basic_push(self.target, overwrite,
3237
# TODO: Why set master_branch and local_branch if there's no
3238
# binding? Maybe cleaner to just leave them unset? -- mbp
3240
result.master_branch = self.target
3241
result.local_branch = None
3246
def is_compatible(self, source, target):
3247
# GenericBranch uses the public API, so always compatible
3251
class InterToBranch5(GenericInterBranch):
3254
def _get_branch_formats_to_test():
3255
return BranchFormat._default_format, BzrBranchFormat5()
3257
def pull(self, overwrite=False, stop_revision=None,
3258
possible_transports=None, run_hooks=True,
3259
_override_hook_target=None, local=False):
3260
"""Pull from source into self, updating my master if any.
3262
:param run_hooks: Private parameter - if false, this branch
3263
is being called because it's the master of the primary branch,
3264
so it should not run its hooks.
3266
bound_location = self.target.get_bound_location()
3267
if local and not bound_location:
3268
raise errors.LocalRequiresBoundBranch()
3269
master_branch = None
3270
if not local and bound_location and self.source.base != bound_location:
3271
# not pulling from master, so we need to update master.
3272
master_branch = self.target.get_master_branch(possible_transports)
3273
master_branch.lock_write()
3276
# pull from source into master.
3277
master_branch.pull(self.source, overwrite, stop_revision,
3279
return super(InterToBranch5, self).pull(overwrite,
3280
stop_revision, _hook_master=master_branch,
3281
run_hooks=run_hooks,
3282
_override_hook_target=_override_hook_target)
3285
master_branch.unlock()
3288
InterBranch.register_optimiser(GenericInterBranch)
3289
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
