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# Copyright (C) 2005-2010 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TransportConfig
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from bzrlib.repofmt.pack_repo import RepositoryFormatKnitPack5RichRoot
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.hooks import HookPoint, Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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hooks: An instance of BranchHooks.
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# this is really an instance variable - FIXME move it there
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def __init__(self, *ignored, **ignored_too):
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self.tags = self._format.make_tags(self)
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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self._partial_revision_id_to_revno_cache = {}
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self._partial_revision_history_cache = []
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self._last_revision_info_cache = None
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self._merge_sorted_revisions_cache = None
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hooks = Branch.hooks['open']
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def _open_hook(self):
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"""Called by init to allow simpler extension of the base class."""
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def _activate_fallback_location(self, url):
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"""Activate the branch/repository from url as a fallback repository."""
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repo = self._get_fallback_repository(url)
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if repo.has_same_location(self.repository):
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raise errors.UnstackableLocationError(self.base, url)
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self.repository.add_fallback_repository(repo)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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This will probe the repository for its lock as well.
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self.control_files.break_lock()
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self.repository.break_lock()
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master = self.get_master_branch()
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if master is not None:
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self.repository._format,
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self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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def open_containing(url, possible_transports=None):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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return control.open_branch(), relpath
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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def get_config(self):
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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master is not None:
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# return the master branch value
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except errors.BzrError, e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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nick = property(_get_nick, _set_nick)
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map and
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len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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raise NotImplementedError(self.lock_read)
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raise NotImplementedError(self.unlock)
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def peek_lock_mode(self):
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"""Return lock mode for the Branch: 'r', 'w' or None"""
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raise NotImplementedError(self.peek_lock_mode)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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# 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.base)
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def set_append_revisions_only(self, enabled):
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if not self._format.supports_set_append_revisions_only():
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raise errors.UpgradeRequired(self.base)
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self.get_config().set_user_option('append_revisions_only', value,
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def set_reference_info(self, file_id, tree_path, branch_location):
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"""Set the branch location to use for a tree reference."""
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raise errors.UnsupportedOperation(self.set_reference_info, self)
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def get_reference_info(self, file_id):
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"""Get the tree_path and branch_location for a tree reference."""
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raise errors.UnsupportedOperation(self.get_reference_info, self)
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def fetch(self, from_branch, last_revision=None, pb=None):
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"""Copy revisions from from_branch into this branch.
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:param from_branch: Where to copy from.
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:param last_revision: What revision to stop at (None for at the end
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:param pb: An optional progress bar to use.
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if self.base == from_branch.base:
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symbol_versioning.warn(
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symbol_versioning.deprecated_in((1, 14, 0))
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% "pb parameter to fetch()")
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from_branch.lock_read()
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if last_revision is None:
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last_revision = from_branch.last_revision()
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last_revision = _mod_revision.ensure_null(last_revision)
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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def get_bound_location(self):
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"""Return the URL of the branch we are bound to.
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Older format branches cannot bind, please be sure to use a metadir
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def get_old_bound_location(self):
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"""Return the URL of the branch we used to be bound to
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raise errors.UpgradeRequired(self.base)
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def get_commit_builder(self, parents, config=None, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this branch.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Optional configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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config = self.get_config()
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return self.repository.get_commit_builder(self, parents, config,
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timestamp, timezone, committer, revprops, revision_id)
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def get_master_branch(self, possible_transports=None):
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"""Return the branch we are bound to.
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:return: Either a Branch, or None
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise errors.InvalidRevisionNumber(revno)
693
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):
705
"""Print `file` to stdout."""
706
raise NotImplementedError(self.print_file)
708
def set_revision_history(self, rev_history):
709
raise NotImplementedError(self.set_revision_history)
712
def set_parent(self, url):
713
"""See Branch.set_parent."""
714
# TODO: Maybe delete old location files?
715
# URLs should never be unicode, even on the local fs,
716
# FIXUP this and get_parent in a future branch format bump:
717
# read and rewrite the file. RBC 20060125
719
if isinstance(url, unicode):
721
url = url.encode('ascii')
722
except UnicodeEncodeError:
723
raise errors.InvalidURL(url,
724
"Urls must be 7-bit ascii, "
725
"use bzrlib.urlutils.escape")
726
url = urlutils.relative_url(self.base, url)
727
self._set_parent_location(url)
730
def set_stacked_on_url(self, url):
731
"""Set the URL this branch is stacked against.
733
:raises UnstackableBranchFormat: If the branch does not support
735
:raises UnstackableRepositoryFormat: If the repository does not support
738
if not self._format.supports_stacking():
739
raise errors.UnstackableBranchFormat(self._format, self.base)
740
# XXX: Changing from one fallback repository to another does not check
741
# that all the data you need is present in the new fallback.
742
# Possibly it should.
743
self._check_stackable_repo()
746
old_url = self.get_stacked_on_url()
747
except (errors.NotStacked, errors.UnstackableBranchFormat,
748
errors.UnstackableRepositoryFormat):
752
self._activate_fallback_location(url)
753
# write this out after the repository is stacked to avoid setting a
754
# stacked config that doesn't work.
755
self._set_config_location('stacked_on_location', url)
758
"""Change a branch to be unstacked, copying data as needed.
760
Don't call this directly, use set_stacked_on_url(None).
762
pb = ui.ui_factory.nested_progress_bar()
764
pb.update("Unstacking")
765
# The basic approach here is to fetch the tip of the branch,
766
# including all available ghosts, from the existing stacked
767
# repository into a new repository object without the fallbacks.
769
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
770
# correct for CHKMap repostiories
771
old_repository = self.repository
772
if len(old_repository._fallback_repositories) != 1:
773
raise AssertionError("can't cope with fallback repositories "
774
"of %r" % (self.repository,))
775
# unlock it, including unlocking the fallback
776
old_repository.unlock()
777
old_repository.lock_read()
779
# Repositories don't offer an interface to remove fallback
780
# repositories today; take the conceptually simpler option and just
781
# reopen it. We reopen it starting from the URL so that we
782
# get a separate connection for RemoteRepositories and can
783
# stream from one of them to the other. This does mean doing
784
# separate SSH connection setup, but unstacking is not a
785
# common operation so it's tolerable.
786
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
787
new_repository = new_bzrdir.find_repository()
788
self.repository = new_repository
789
if self.repository._fallback_repositories:
790
raise AssertionError("didn't expect %r to have "
791
"fallback_repositories"
792
% (self.repository,))
793
# this is not paired with an unlock because it's just restoring
794
# the previous state; the lock's released when set_stacked_on_url
796
self.repository.lock_write()
797
# XXX: If you unstack a branch while it has a working tree
798
# with a pending merge, the pending-merged revisions will no
799
# longer be present. You can (probably) revert and remerge.
801
# XXX: This only fetches up to the tip of the repository; it
802
# doesn't bring across any tags. That's fairly consistent
803
# with how branch works, but perhaps not ideal.
804
self.repository.fetch(old_repository,
805
revision_id=self.last_revision(),
808
old_repository.unlock()
812
def _set_tags_bytes(self, bytes):
813
"""Mirror method for _get_tags_bytes.
815
:seealso: Branch._get_tags_bytes.
817
return _run_with_write_locked_target(self, self._transport.put_bytes,
820
def _cache_revision_history(self, rev_history):
821
"""Set the cached revision history to rev_history.
823
The revision_history method will use this cache to avoid regenerating
824
the revision history.
826
This API is semi-public; it only for use by subclasses, all other code
827
should consider it to be private.
829
self._revision_history_cache = rev_history
831
def _cache_revision_id_to_revno(self, revision_id_to_revno):
832
"""Set the cached revision_id => revno map to revision_id_to_revno.
834
This API is semi-public; it only for use by subclasses, all other code
835
should consider it to be private.
837
self._revision_id_to_revno_cache = revision_id_to_revno
839
def _clear_cached_state(self):
840
"""Clear any cached data on this branch, e.g. cached revision history.
842
This means the next call to revision_history will need to call
843
_gen_revision_history.
845
This API is semi-public; it only for use by subclasses, all other code
846
should consider it to be private.
848
self._revision_history_cache = None
849
self._revision_id_to_revno_cache = None
850
self._last_revision_info_cache = None
851
self._merge_sorted_revisions_cache = None
852
self._partial_revision_history_cache = []
853
self._partial_revision_id_to_revno_cache = {}
855
def _gen_revision_history(self):
856
"""Return sequence of revision hashes on to this branch.
858
Unlike revision_history, this method always regenerates or rereads the
859
revision history, i.e. it does not cache the result, so repeated calls
862
Concrete subclasses should override this instead of revision_history so
863
that subclasses do not need to deal with caching logic.
865
This API is semi-public; it only for use by subclasses, all other code
866
should consider it to be private.
868
raise NotImplementedError(self._gen_revision_history)
871
def revision_history(self):
872
"""Return sequence of revision ids on this branch.
874
This method will cache the revision history for as long as it is safe to
877
if 'evil' in debug.debug_flags:
878
mutter_callsite(3, "revision_history scales with history.")
879
if self._revision_history_cache is not None:
880
history = self._revision_history_cache
882
history = self._gen_revision_history()
883
self._cache_revision_history(history)
887
"""Return current revision number for this branch.
889
That is equivalent to the number of revisions committed to
892
return self.last_revision_info()[0]
895
"""Older format branches cannot bind or unbind."""
896
raise errors.UpgradeRequired(self.base)
898
def last_revision(self):
899
"""Return last revision id, or NULL_REVISION."""
900
return self.last_revision_info()[1]
903
def last_revision_info(self):
904
"""Return information about the last revision.
906
:return: A tuple (revno, revision_id).
908
if self._last_revision_info_cache is None:
909
self._last_revision_info_cache = self._last_revision_info()
910
return self._last_revision_info_cache
912
def _last_revision_info(self):
913
rh = self.revision_history()
916
return (revno, rh[-1])
918
return (0, _mod_revision.NULL_REVISION)
920
@deprecated_method(deprecated_in((1, 6, 0)))
921
def missing_revisions(self, other, stop_revision=None):
922
"""Return a list of new revisions that would perfectly fit.
924
If self and other have not diverged, return a list of the revisions
925
present in other, but missing from self.
927
self_history = self.revision_history()
928
self_len = len(self_history)
929
other_history = other.revision_history()
930
other_len = len(other_history)
931
common_index = min(self_len, other_len) -1
932
if common_index >= 0 and \
933
self_history[common_index] != other_history[common_index]:
934
raise errors.DivergedBranches(self, other)
936
if stop_revision is None:
937
stop_revision = other_len
939
if stop_revision > other_len:
940
raise errors.NoSuchRevision(self, stop_revision)
941
return other_history[self_len:stop_revision]
944
def update_revisions(self, other, stop_revision=None, overwrite=False,
946
"""Pull in new perfect-fit revisions.
948
:param other: Another Branch to pull from
949
:param stop_revision: Updated until the given revision
950
:param overwrite: Always set the branch pointer, rather than checking
951
to see if it is a proper descendant.
952
:param graph: A Graph object that can be used to query history
953
information. This can be None.
956
return InterBranch.get(other, self).update_revisions(stop_revision,
959
def import_last_revision_info(self, source_repo, revno, revid):
960
"""Set the last revision info, importing from another repo if necessary.
962
This is used by the bound branch code to upload a revision to
963
the master branch first before updating the tip of the local branch.
965
:param source_repo: Source repository to optionally fetch from
966
:param revno: Revision number of the new tip
967
:param revid: Revision id of the new tip
969
if not self.repository.has_same_location(source_repo):
970
self.repository.fetch(source_repo, revision_id=revid)
971
self.set_last_revision_info(revno, revid)
973
def revision_id_to_revno(self, revision_id):
974
"""Given a revision id, return its revno"""
975
if _mod_revision.is_null(revision_id):
977
history = self.revision_history()
979
return history.index(revision_id) + 1
981
raise errors.NoSuchRevision(self, revision_id)
984
def get_rev_id(self, revno, history=None):
985
"""Find the revision id of the specified revno."""
987
return _mod_revision.NULL_REVISION
988
last_revno, last_revid = self.last_revision_info()
989
if revno == last_revno:
991
if revno <= 0 or revno > last_revno:
992
raise errors.NoSuchRevision(self, revno)
993
distance_from_last = last_revno - revno
994
if len(self._partial_revision_history_cache) <= distance_from_last:
995
self._extend_partial_history(distance_from_last)
996
return self._partial_revision_history_cache[distance_from_last]
999
def pull(self, source, overwrite=False, stop_revision=None,
1000
possible_transports=None, *args, **kwargs):
1001
"""Mirror source into this branch.
1003
This branch is considered to be 'local', having low latency.
1005
:returns: PullResult instance
1007
return InterBranch.get(source, self).pull(overwrite=overwrite,
1008
stop_revision=stop_revision,
1009
possible_transports=possible_transports, *args, **kwargs)
1011
def push(self, target, overwrite=False, stop_revision=None, *args,
1013
"""Mirror this branch into target.
1015
This branch is considered to be 'local', having low latency.
1017
return InterBranch.get(self, target).push(overwrite, stop_revision,
1020
def lossy_push(self, target, stop_revision=None):
1021
"""Push deltas into another branch.
1023
:note: This does not, like push, retain the revision ids from
1024
the source branch and will, rather than adding bzr-specific
1025
metadata, push only those semantics of the revision that can be
1026
natively represented by this branch' VCS.
1028
:param target: Target branch
1029
:param stop_revision: Revision to push, defaults to last revision.
1030
:return: BranchPushResult with an extra member revidmap:
1031
A dictionary mapping revision ids from the target branch
1032
to new revision ids in the target branch, for each
1033
revision that was pushed.
1035
inter = InterBranch.get(self, target)
1036
lossy_push = getattr(inter, "lossy_push", None)
1037
if lossy_push is None:
1038
raise errors.LossyPushToSameVCS(self, target)
1039
return lossy_push(stop_revision)
1041
def basis_tree(self):
1042
"""Return `Tree` object for last revision."""
1043
return self.repository.revision_tree(self.last_revision())
1045
def get_parent(self):
1046
"""Return the parent location of the branch.
1048
This is the default location for pull/missing. The usual
1049
pattern is that the user can override it by specifying a
1052
parent = self._get_parent_location()
1055
# This is an old-format absolute path to a local branch
1056
# turn it into a url
1057
if parent.startswith('/'):
1058
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1060
return urlutils.join(self.base[:-1], parent)
1061
except errors.InvalidURLJoin, e:
1062
raise errors.InaccessibleParent(parent, self.base)
1064
def _get_parent_location(self):
1065
raise NotImplementedError(self._get_parent_location)
1067
def _set_config_location(self, name, url, config=None,
1068
make_relative=False):
1070
config = self.get_config()
1074
url = urlutils.relative_url(self.base, url)
1075
config.set_user_option(name, url, warn_masked=True)
1077
def _get_config_location(self, name, config=None):
1079
config = self.get_config()
1080
location = config.get_user_option(name)
1085
def get_child_submit_format(self):
1086
"""Return the preferred format of submissions to this branch."""
1087
return self.get_config().get_user_option("child_submit_format")
1089
def get_submit_branch(self):
1090
"""Return the submit location of the branch.
1092
This is the default location for bundle. The usual
1093
pattern is that the user can override it by specifying a
1096
return self.get_config().get_user_option('submit_branch')
1098
def set_submit_branch(self, location):
1099
"""Return the submit location of the branch.
1101
This is the default location for bundle. The usual
1102
pattern is that the user can override it by specifying a
1105
self.get_config().set_user_option('submit_branch', location,
1108
def get_public_branch(self):
1109
"""Return the public location of the branch.
1111
This is used by merge directives.
1113
return self._get_config_location('public_branch')
1115
def set_public_branch(self, location):
1116
"""Return the submit location of the branch.
1118
This is the default location for bundle. The usual
1119
pattern is that the user can override it by specifying a
1122
self._set_config_location('public_branch', location)
1124
def get_push_location(self):
1125
"""Return the None or the location to push this branch to."""
1126
push_loc = self.get_config().get_user_option('push_location')
1129
def set_push_location(self, location):
1130
"""Set a new push location for this branch."""
1131
raise NotImplementedError(self.set_push_location)
1133
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1134
"""Run the post_change_branch_tip hooks."""
1135
hooks = Branch.hooks['post_change_branch_tip']
1138
new_revno, new_revid = self.last_revision_info()
1139
params = ChangeBranchTipParams(
1140
self, old_revno, new_revno, old_revid, new_revid)
1144
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1145
"""Run the pre_change_branch_tip hooks."""
1146
hooks = Branch.hooks['pre_change_branch_tip']
1149
old_revno, old_revid = self.last_revision_info()
1150
params = ChangeBranchTipParams(
1151
self, old_revno, new_revno, old_revid, new_revid)
1157
"""Synchronise this branch with the master branch if any.
1159
:return: None or the last_revision pivoted out during the update.
1163
def check_revno(self, revno):
1165
Check whether a revno corresponds to any revision.
1166
Zero (the NULL revision) is considered valid.
1169
self.check_real_revno(revno)
1171
def check_real_revno(self, revno):
1173
Check whether a revno corresponds to a real revision.
1174
Zero (the NULL revision) is considered invalid
1176
if revno < 1 or revno > self.revno():
1177
raise errors.InvalidRevisionNumber(revno)
1180
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
1181
"""Clone this branch into to_bzrdir preserving all semantic values.
1183
Most API users will want 'create_clone_on_transport', which creates a
1184
new bzrdir and branch on the fly.
1186
revision_id: if not None, the revision history in the new branch will
1187
be truncated to end with revision_id.
1189
result = to_bzrdir.create_branch()
1192
if repository_policy is not None:
1193
repository_policy.configure_branch(result)
1194
self.copy_content_into(result, revision_id=revision_id)
1200
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
1201
"""Create a new line of development from the branch, into to_bzrdir.
1203
to_bzrdir controls the branch format.
1205
revision_id: if not None, the revision history in the new branch will
1206
be truncated to end with revision_id.
1208
if (repository_policy is not None and
1209
repository_policy.requires_stacking()):
1210
to_bzrdir._format.require_stacking(_skip_repo=True)
1211
result = to_bzrdir.create_branch()
1214
if repository_policy is not None:
1215
repository_policy.configure_branch(result)
1216
self.copy_content_into(result, revision_id=revision_id)
1217
result.set_parent(self.bzrdir.root_transport.base)
1222
def _synchronize_history(self, destination, revision_id):
1223
"""Synchronize last revision and revision history between branches.
1225
This version is most efficient when the destination is also a
1226
BzrBranch6, but works for BzrBranch5, as long as the destination's
1227
repository contains all the lefthand ancestors of the intended
1228
last_revision. If not, set_last_revision_info will fail.
1230
:param destination: The branch to copy the history into
1231
:param revision_id: The revision-id to truncate history at. May
1232
be None to copy complete history.
1234
source_revno, source_revision_id = self.last_revision_info()
1235
if revision_id is None:
1236
revno, revision_id = source_revno, source_revision_id
1238
graph = self.repository.get_graph()
1240
revno = graph.find_distance_to_null(revision_id,
1241
[(source_revision_id, source_revno)])
1242
except errors.GhostRevisionsHaveNoRevno:
1243
# Default to 1, if we can't find anything else
1245
destination.set_last_revision_info(revno, revision_id)
1248
def copy_content_into(self, destination, revision_id=None):
1249
"""Copy the content of self into destination.
1251
revision_id: if not None, the revision history in the new branch will
1252
be truncated to end with revision_id.
1254
self.update_references(destination)
1255
self._synchronize_history(destination, revision_id)
1257
parent = self.get_parent()
1258
except errors.InaccessibleParent, e:
1259
mutter('parent was not accessible to copy: %s', e)
1262
destination.set_parent(parent)
1263
if self._push_should_merge_tags():
1264
self.tags.merge_to(destination.tags)
1266
def update_references(self, target):
1267
if not getattr(self._format, 'supports_reference_locations', False):
1269
reference_dict = self._get_all_reference_info()
1270
if len(reference_dict) == 0:
1272
old_base = self.base
1273
new_base = target.base
1274
target_reference_dict = target._get_all_reference_info()
1275
for file_id, (tree_path, branch_location) in (
1276
reference_dict.items()):
1277
branch_location = urlutils.rebase_url(branch_location,
1279
target_reference_dict.setdefault(
1280
file_id, (tree_path, branch_location))
1281
target._set_all_reference_info(target_reference_dict)
1284
def check(self, refs):
1285
"""Check consistency of the branch.
1287
In particular this checks that revisions given in the revision-history
1288
do actually match up in the revision graph, and that they're all
1289
present in the repository.
1291
Callers will typically also want to check the repository.
1293
:param refs: Calculated refs for this branch as specified by
1294
branch._get_check_refs()
1295
:return: A BranchCheckResult.
1297
result = BranchCheckResult(self)
1298
last_revno, last_revision_id = self.last_revision_info()
1299
actual_revno = refs[('lefthand-distance', last_revision_id)]
1300
if actual_revno != last_revno:
1301
result.errors.append(errors.BzrCheckError(
1302
'revno does not match len(mainline) %s != %s' % (
1303
last_revno, actual_revno)))
1304
# TODO: We should probably also check that self.revision_history
1305
# matches the repository for older branch formats.
1306
# If looking for the code that cross-checks repository parents against
1307
# the iter_reverse_revision_history output, that is now a repository
1311
def _get_checkout_format(self):
1312
"""Return the most suitable metadir for a checkout of this branch.
1313
Weaves are used if this branch's repository uses weaves.
1315
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1316
from bzrlib.repofmt import weaverepo
1317
format = bzrdir.BzrDirMetaFormat1()
1318
format.repository_format = weaverepo.RepositoryFormat7()
1320
format = self.repository.bzrdir.checkout_metadir()
1321
format.set_branch_format(self._format)
1324
def create_clone_on_transport(self, to_transport, revision_id=None,
1325
stacked_on=None, create_prefix=False, use_existing_dir=False):
1326
"""Create a clone of this branch and its bzrdir.
1328
:param to_transport: The transport to clone onto.
1329
:param revision_id: The revision id to use as tip in the new branch.
1330
If None the tip is obtained from this branch.
1331
:param stacked_on: An optional URL to stack the clone on.
1332
:param create_prefix: Create any missing directories leading up to
1334
:param use_existing_dir: Use an existing directory if one exists.
1336
# XXX: Fix the bzrdir API to allow getting the branch back from the
1337
# clone call. Or something. 20090224 RBC/spiv.
1338
if revision_id is None:
1339
revision_id = self.last_revision()
1340
dir_to = self.bzrdir.clone_on_transport(to_transport,
1341
revision_id=revision_id, stacked_on=stacked_on,
1342
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1343
return dir_to.open_branch()
1345
def create_checkout(self, to_location, revision_id=None,
1346
lightweight=False, accelerator_tree=None,
1348
"""Create a checkout of a branch.
1350
:param to_location: The url to produce the checkout at
1351
:param revision_id: The revision to check out
1352
:param lightweight: If True, produce a lightweight checkout, otherwise,
1353
produce a bound branch (heavyweight checkout)
1354
:param accelerator_tree: A tree which can be used for retrieving file
1355
contents more quickly than the revision tree, i.e. a workingtree.
1356
The revision tree will be used for cases where accelerator_tree's
1357
content is different.
1358
:param hardlink: If true, hard-link files from accelerator_tree,
1360
:return: The tree of the created checkout
1362
t = transport.get_transport(to_location)
1365
format = self._get_checkout_format()
1366
checkout = format.initialize_on_transport(t)
1367
from_branch = BranchReferenceFormat().initialize(checkout,
1370
format = self._get_checkout_format()
1371
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1372
to_location, force_new_tree=False, format=format)
1373
checkout = checkout_branch.bzrdir
1374
checkout_branch.bind(self)
1375
# pull up to the specified revision_id to set the initial
1376
# branch tip correctly, and seed it with history.
1377
checkout_branch.pull(self, stop_revision=revision_id)
1379
tree = checkout.create_workingtree(revision_id,
1380
from_branch=from_branch,
1381
accelerator_tree=accelerator_tree,
1383
basis_tree = tree.basis_tree()
1384
basis_tree.lock_read()
1386
for path, file_id in basis_tree.iter_references():
1387
reference_parent = self.reference_parent(file_id, path)
1388
reference_parent.create_checkout(tree.abspath(path),
1389
basis_tree.get_reference_revision(file_id, path),
1396
def reconcile(self, thorough=True):
1397
"""Make sure the data stored in this branch is consistent."""
1398
from bzrlib.reconcile import BranchReconciler
1399
reconciler = BranchReconciler(self, thorough=thorough)
1400
reconciler.reconcile()
1403
def reference_parent(self, file_id, path, possible_transports=None):
1404
"""Return the parent branch for a tree-reference file_id
1405
:param file_id: The file_id of the tree reference
1406
:param path: The path of the file_id in the tree
1407
:return: A branch associated with the file_id
1409
# FIXME should provide multiple branches, based on config
1410
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1411
possible_transports=possible_transports)
1413
def supports_tags(self):
1414
return self._format.supports_tags()
1416
def automatic_tag_name(self, revision_id):
1417
"""Try to automatically find the tag name for a revision.
1419
:param revision_id: Revision id of the revision.
1420
:return: A tag name or None if no tag name could be determined.
1422
for hook in Branch.hooks['automatic_tag_name']:
1423
ret = hook(self, revision_id)
1428
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1430
"""Ensure that revision_b is a descendant of revision_a.
1432
This is a helper function for update_revisions.
1434
:raises: DivergedBranches if revision_b has diverged from revision_a.
1435
:returns: True if revision_b is a descendant of revision_a.
1437
relation = self._revision_relations(revision_a, revision_b, graph)
1438
if relation == 'b_descends_from_a':
1440
elif relation == 'diverged':
1441
raise errors.DivergedBranches(self, other_branch)
1442
elif relation == 'a_descends_from_b':
1445
raise AssertionError("invalid relation: %r" % (relation,))
1447
def _revision_relations(self, revision_a, revision_b, graph):
1448
"""Determine the relationship between two revisions.
1450
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1452
heads = graph.heads([revision_a, revision_b])
1453
if heads == set([revision_b]):
1454
return 'b_descends_from_a'
1455
elif heads == set([revision_a, revision_b]):
1456
# These branches have diverged
1458
elif heads == set([revision_a]):
1459
return 'a_descends_from_b'
1461
raise AssertionError("invalid heads: %r" % (heads,))
1464
class BranchFormat(object):
1465
"""An encapsulation of the initialization and open routines for a format.
1467
Formats provide three things:
1468
* An initialization routine,
1472
Formats are placed in an dict by their format string for reference
1473
during branch opening. Its not required that these be instances, they
1474
can be classes themselves with class methods - it simply depends on
1475
whether state is needed for a given format or not.
1477
Once a format is deprecated, just deprecate the initialize and open
1478
methods on the format class. Do not deprecate the object, as the
1479
object will be created every time regardless.
1482
_default_format = None
1483
"""The default format used for new branches."""
1486
"""The known formats."""
1488
can_set_append_revisions_only = True
1490
def __eq__(self, other):
1491
return self.__class__ is other.__class__
1493
def __ne__(self, other):
1494
return not (self == other)
1497
def find_format(klass, a_bzrdir, name=None):
1498
"""Return the format for the branch object in a_bzrdir."""
1500
transport = a_bzrdir.get_branch_transport(None, name=name)
1501
format_string = transport.get_bytes("format")
1502
return klass._formats[format_string]
1503
except errors.NoSuchFile:
1504
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1506
raise errors.UnknownFormatError(format=format_string, kind='branch')
1509
def get_default_format(klass):
1510
"""Return the current default format."""
1511
return klass._default_format
1513
def get_reference(self, a_bzrdir):
1514
"""Get the target reference of the branch in a_bzrdir.
1516
format probing must have been completed before calling
1517
this method - it is assumed that the format of the branch
1518
in a_bzrdir is correct.
1520
:param a_bzrdir: The bzrdir to get the branch data from.
1521
:return: None if the branch is not a reference branch.
1526
def set_reference(self, a_bzrdir, to_branch):
1527
"""Set the target reference of the branch in a_bzrdir.
1529
format probing must have been completed before calling
1530
this method - it is assumed that the format of the branch
1531
in a_bzrdir is correct.
1533
:param a_bzrdir: The bzrdir to set the branch reference for.
1534
:param to_branch: branch that the checkout is to reference
1536
raise NotImplementedError(self.set_reference)
1538
def get_format_string(self):
1539
"""Return the ASCII format string that identifies this format."""
1540
raise NotImplementedError(self.get_format_string)
1542
def get_format_description(self):
1543
"""Return the short format description for this format."""
1544
raise NotImplementedError(self.get_format_description)
1546
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1547
lock_type='metadir', set_format=True):
1548
"""Initialize a branch in a bzrdir, with specified files
1550
:param a_bzrdir: The bzrdir to initialize the branch in
1551
:param utf8_files: The files to create as a list of
1552
(filename, content) tuples
1553
:param name: Name of colocated branch to create, if any
1554
:param set_format: If True, set the format with
1555
self.get_format_string. (BzrBranch4 has its format set
1557
:return: a branch in this format
1559
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
1560
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1562
'metadir': ('lock', lockdir.LockDir),
1563
'branch4': ('branch-lock', lockable_files.TransportLock),
1565
lock_name, lock_class = lock_map[lock_type]
1566
control_files = lockable_files.LockableFiles(branch_transport,
1567
lock_name, lock_class)
1568
control_files.create_lock()
1570
control_files.lock_write()
1571
except errors.LockContention:
1572
if lock_type != 'branch4':
1578
utf8_files += [('format', self.get_format_string())]
1580
for (filename, content) in utf8_files:
1581
branch_transport.put_bytes(
1583
mode=a_bzrdir._get_file_mode())
1586
control_files.unlock()
1587
return self.open(a_bzrdir, name, _found=True)
1589
def initialize(self, a_bzrdir, name=None):
1590
"""Create a branch of this format in a_bzrdir.
1592
:param name: Name of the colocated branch to create.
1594
raise NotImplementedError(self.initialize)
1596
def is_supported(self):
1597
"""Is this format supported?
1599
Supported formats can be initialized and opened.
1600
Unsupported formats may not support initialization or committing or
1601
some other features depending on the reason for not being supported.
1605
def make_tags(self, branch):
1606
"""Create a tags object for branch.
1608
This method is on BranchFormat, because BranchFormats are reflected
1609
over the wire via network_name(), whereas full Branch instances require
1610
multiple VFS method calls to operate at all.
1612
The default implementation returns a disabled-tags instance.
1614
Note that it is normal for branch to be a RemoteBranch when using tags
1617
return DisabledTags(branch)
1619
def network_name(self):
1620
"""A simple byte string uniquely identifying this format for RPC calls.
1622
MetaDir branch formats use their disk format string to identify the
1623
repository over the wire. All in one formats such as bzr < 0.8, and
1624
foreign formats like svn/git and hg should use some marker which is
1625
unique and immutable.
1627
raise NotImplementedError(self.network_name)
1629
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1630
"""Return the branch object for a_bzrdir
1632
:param a_bzrdir: A BzrDir that contains a branch.
1633
:param name: Name of colocated branch to open
1634
:param _found: a private parameter, do not use it. It is used to
1635
indicate if format probing has already be done.
1636
:param ignore_fallbacks: when set, no fallback branches will be opened
1637
(if there are any). Default is to open fallbacks.
1639
raise NotImplementedError(self.open)
1642
def register_format(klass, format):
1643
"""Register a metadir format."""
1644
klass._formats[format.get_format_string()] = format
1645
# Metadir formats have a network name of their format string, and get
1646
# registered as class factories.
1647
network_format_registry.register(format.get_format_string(), format.__class__)
1650
def set_default_format(klass, format):
1651
klass._default_format = format
1653
def supports_set_append_revisions_only(self):
1654
"""True if this format supports set_append_revisions_only."""
1657
def supports_stacking(self):
1658
"""True if this format records a stacked-on branch."""
1662
def unregister_format(klass, format):
1663
del klass._formats[format.get_format_string()]
1666
return self.get_format_description().rstrip()
1668
def supports_tags(self):
1669
"""True if this format supports tags stored in the branch"""
1670
return False # by default
1673
class BranchHooks(Hooks):
1674
"""A dictionary mapping hook name to a list of callables for branch hooks.
1676
e.g. ['set_rh'] Is the list of items to be called when the
1677
set_revision_history function is invoked.
1681
"""Create the default hooks.
1683
These are all empty initially, because by default nothing should get
1686
Hooks.__init__(self)
1687
self.create_hook(HookPoint('set_rh',
1688
"Invoked whenever the revision history has been set via "
1689
"set_revision_history. The api signature is (branch, "
1690
"revision_history), and the branch will be write-locked. "
1691
"The set_rh hook can be expensive for bzr to trigger, a better "
1692
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1693
self.create_hook(HookPoint('open',
1694
"Called with the Branch object that has been opened after a "
1695
"branch is opened.", (1, 8), None))
1696
self.create_hook(HookPoint('post_push',
1697
"Called after a push operation completes. post_push is called "
1698
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1699
"bzr client.", (0, 15), None))
1700
self.create_hook(HookPoint('post_pull',
1701
"Called after a pull operation completes. post_pull is called "
1702
"with a bzrlib.branch.PullResult object and only runs in the "
1703
"bzr client.", (0, 15), None))
1704
self.create_hook(HookPoint('pre_commit',
1705
"Called after a commit is calculated but before it is is "
1706
"completed. pre_commit is called with (local, master, old_revno, "
1707
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1708
"). old_revid is NULL_REVISION for the first commit to a branch, "
1709
"tree_delta is a TreeDelta object describing changes from the "
1710
"basis revision. hooks MUST NOT modify this delta. "
1711
" future_tree is an in-memory tree obtained from "
1712
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1713
"tree.", (0,91), None))
1714
self.create_hook(HookPoint('post_commit',
1715
"Called in the bzr client after a commit has completed. "
1716
"post_commit is called with (local, master, old_revno, old_revid, "
1717
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1718
"commit to a branch.", (0, 15), None))
1719
self.create_hook(HookPoint('post_uncommit',
1720
"Called in the bzr client after an uncommit completes. "
1721
"post_uncommit is called with (local, master, old_revno, "
1722
"old_revid, new_revno, new_revid) where local is the local branch "
1723
"or None, master is the target branch, and an empty branch "
1724
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1725
self.create_hook(HookPoint('pre_change_branch_tip',
1726
"Called in bzr client and server before a change to the tip of a "
1727
"branch is made. pre_change_branch_tip is called with a "
1728
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1729
"commit, uncommit will all trigger this hook.", (1, 6), None))
1730
self.create_hook(HookPoint('post_change_branch_tip',
1731
"Called in bzr client and server after a change to the tip of a "
1732
"branch is made. post_change_branch_tip is called with a "
1733
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1734
"commit, uncommit will all trigger this hook.", (1, 4), None))
1735
self.create_hook(HookPoint('transform_fallback_location',
1736
"Called when a stacked branch is activating its fallback "
1737
"locations. transform_fallback_location is called with (branch, "
1738
"url), and should return a new url. Returning the same url "
1739
"allows it to be used as-is, returning a different one can be "
1740
"used to cause the branch to stack on a closer copy of that "
1741
"fallback_location. Note that the branch cannot have history "
1742
"accessing methods called on it during this hook because the "
1743
"fallback locations have not been activated. When there are "
1744
"multiple hooks installed for transform_fallback_location, "
1745
"all are called with the url returned from the previous hook."
1746
"The order is however undefined.", (1, 9), None))
1747
self.create_hook(HookPoint('automatic_tag_name',
1748
"Called to determine an automatic tag name for a revision."
1749
"automatic_tag_name is called with (branch, revision_id) and "
1750
"should return a tag name or None if no tag name could be "
1751
"determined. The first non-None tag name returned will be used.",
1756
# install the default hooks into the Branch class.
1757
Branch.hooks = BranchHooks()
1760
class ChangeBranchTipParams(object):
1761
"""Object holding parameters passed to *_change_branch_tip hooks.
1763
There are 5 fields that hooks may wish to access:
1765
:ivar branch: the branch being changed
1766
:ivar old_revno: revision number before the change
1767
:ivar new_revno: revision number after the change
1768
:ivar old_revid: revision id before the change
1769
:ivar new_revid: revision id after the change
1771
The revid fields are strings. The revno fields are integers.
1774
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1775
"""Create a group of ChangeBranchTip parameters.
1777
:param branch: The branch being changed.
1778
:param old_revno: Revision number before the change.
1779
:param new_revno: Revision number after the change.
1780
:param old_revid: Tip revision id before the change.
1781
:param new_revid: Tip revision id after the change.
1783
self.branch = branch
1784
self.old_revno = old_revno
1785
self.new_revno = new_revno
1786
self.old_revid = old_revid
1787
self.new_revid = new_revid
1789
def __eq__(self, other):
1790
return self.__dict__ == other.__dict__
1793
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1794
self.__class__.__name__, self.branch,
1795
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1798
class BzrBranchFormat4(BranchFormat):
1799
"""Bzr branch format 4.
1802
- a revision-history file.
1803
- a branch-lock lock file [ to be shared with the bzrdir ]
1806
def get_format_description(self):
1807
"""See BranchFormat.get_format_description()."""
1808
return "Branch format 4"
1810
def initialize(self, a_bzrdir, name=None):
1811
"""Create a branch of this format in a_bzrdir."""
1812
utf8_files = [('revision-history', ''),
1813
('branch-name', ''),
1815
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1816
lock_type='branch4', set_format=False)
1819
super(BzrBranchFormat4, self).__init__()
1820
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1822
def network_name(self):
1823
"""The network name for this format is the control dirs disk label."""
1824
return self._matchingbzrdir.get_format_string()
1826
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1827
"""See BranchFormat.open()."""
1829
# we are being called directly and must probe.
1830
raise NotImplementedError
1831
return BzrBranch(_format=self,
1832
_control_files=a_bzrdir._control_files,
1835
_repository=a_bzrdir.open_repository())
1838
return "Bazaar-NG branch format 4"
1841
class BranchFormatMetadir(BranchFormat):
1842
"""Common logic for meta-dir based branch formats."""
1844
def _branch_class(self):
1845
"""What class to instantiate on open calls."""
1846
raise NotImplementedError(self._branch_class)
1848
def network_name(self):
1849
"""A simple byte string uniquely identifying this format for RPC calls.
1851
Metadir branch formats use their format string.
1853
return self.get_format_string()
1855
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1856
"""See BranchFormat.open()."""
1858
format = BranchFormat.find_format(a_bzrdir, name=name)
1859
if format.__class__ != self.__class__:
1860
raise AssertionError("wrong format %r found for %r" %
1863
transport = a_bzrdir.get_branch_transport(None, name=name)
1864
control_files = lockable_files.LockableFiles(transport, 'lock',
1866
return self._branch_class()(_format=self,
1867
_control_files=control_files,
1870
_repository=a_bzrdir.find_repository(),
1871
ignore_fallbacks=ignore_fallbacks)
1872
except errors.NoSuchFile:
1873
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1876
super(BranchFormatMetadir, self).__init__()
1877
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1878
self._matchingbzrdir.set_branch_format(self)
1880
def supports_tags(self):
1884
class BzrBranchFormat5(BranchFormatMetadir):
1885
"""Bzr branch format 5.
1888
- a revision-history file.
1890
- a lock dir guarding the branch itself
1891
- all of this stored in a branch/ subdirectory
1892
- works with shared repositories.
1894
This format is new in bzr 0.8.
1897
def _branch_class(self):
1900
def get_format_string(self):
1901
"""See BranchFormat.get_format_string()."""
1902
return "Bazaar-NG branch format 5\n"
1904
def get_format_description(self):
1905
"""See BranchFormat.get_format_description()."""
1906
return "Branch format 5"
1908
def initialize(self, a_bzrdir, name=None):
1909
"""Create a branch of this format in a_bzrdir."""
1910
utf8_files = [('revision-history', ''),
1911
('branch-name', ''),
1913
return self._initialize_helper(a_bzrdir, utf8_files, name)
1915
def supports_tags(self):
1919
class BzrBranchFormat6(BranchFormatMetadir):
1920
"""Branch format with last-revision and tags.
1922
Unlike previous formats, this has no explicit revision history. Instead,
1923
this just stores the last-revision, and the left-hand history leading
1924
up to there is the history.
1926
This format was introduced in bzr 0.15
1927
and became the default in 0.91.
1930
def _branch_class(self):
1933
def get_format_string(self):
1934
"""See BranchFormat.get_format_string()."""
1935
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1937
def get_format_description(self):
1938
"""See BranchFormat.get_format_description()."""
1939
return "Branch format 6"
1941
def initialize(self, a_bzrdir, name=None):
1942
"""Create a branch of this format in a_bzrdir."""
1943
utf8_files = [('last-revision', '0 null:\n'),
1944
('branch.conf', ''),
1947
return self._initialize_helper(a_bzrdir, utf8_files, name)
1949
def make_tags(self, branch):
1950
"""See bzrlib.branch.BranchFormat.make_tags()."""
1951
return BasicTags(branch)
1953
def supports_set_append_revisions_only(self):
1957
class BzrBranchFormat8(BranchFormatMetadir):
1958
"""Metadir format supporting storing locations of subtree branches."""
1960
def _branch_class(self):
1963
def get_format_string(self):
1964
"""See BranchFormat.get_format_string()."""
1965
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1967
def get_format_description(self):
1968
"""See BranchFormat.get_format_description()."""
1969
return "Branch format 8"
1971
def initialize(self, a_bzrdir, name=None):
1972
"""Create a branch of this format in a_bzrdir."""
1973
utf8_files = [('last-revision', '0 null:\n'),
1974
('branch.conf', ''),
1978
return self._initialize_helper(a_bzrdir, utf8_files, name)
1981
super(BzrBranchFormat8, self).__init__()
1982
self._matchingbzrdir.repository_format = \
1983
RepositoryFormatKnitPack5RichRoot()
1985
def make_tags(self, branch):
1986
"""See bzrlib.branch.BranchFormat.make_tags()."""
1987
return BasicTags(branch)
1989
def supports_set_append_revisions_only(self):
1992
def supports_stacking(self):
1995
supports_reference_locations = True
1998
class BzrBranchFormat7(BzrBranchFormat8):
1999
"""Branch format with last-revision, tags, and a stacked location pointer.
2001
The stacked location pointer is passed down to the repository and requires
2002
a repository format with supports_external_lookups = True.
2004
This format was introduced in bzr 1.6.
2007
def initialize(self, a_bzrdir, name=None):
2008
"""Create a branch of this format in a_bzrdir."""
2009
utf8_files = [('last-revision', '0 null:\n'),
2010
('branch.conf', ''),
2013
return self._initialize_helper(a_bzrdir, utf8_files, name)
2015
def _branch_class(self):
2018
def get_format_string(self):
2019
"""See BranchFormat.get_format_string()."""
2020
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2022
def get_format_description(self):
2023
"""See BranchFormat.get_format_description()."""
2024
return "Branch format 7"
2026
def supports_set_append_revisions_only(self):
2029
supports_reference_locations = False
2032
class BranchReferenceFormat(BranchFormat):
2033
"""Bzr branch reference format.
2035
Branch references are used in implementing checkouts, they
2036
act as an alias to the real branch which is at some other url.
2043
def get_format_string(self):
2044
"""See BranchFormat.get_format_string()."""
2045
return "Bazaar-NG Branch Reference Format 1\n"
2047
def get_format_description(self):
2048
"""See BranchFormat.get_format_description()."""
2049
return "Checkout reference format 1"
2051
def get_reference(self, a_bzrdir):
2052
"""See BranchFormat.get_reference()."""
2053
transport = a_bzrdir.get_branch_transport(None)
2054
return transport.get_bytes('location')
2056
def set_reference(self, a_bzrdir, to_branch):
2057
"""See BranchFormat.set_reference()."""
2058
transport = a_bzrdir.get_branch_transport(None)
2059
location = transport.put_bytes('location', to_branch.base)
2061
def initialize(self, a_bzrdir, name=None, target_branch=None):
2062
"""Create a branch of this format in a_bzrdir."""
2063
if target_branch is None:
2064
# this format does not implement branch itself, thus the implicit
2065
# creation contract must see it as uninitializable
2066
raise errors.UninitializableFormat(self)
2067
mutter('creating branch reference in %s', a_bzrdir.transport.base)
2068
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
2069
branch_transport.put_bytes('location',
2070
target_branch.bzrdir.root_transport.base)
2071
branch_transport.put_bytes('format', self.get_format_string())
2073
a_bzrdir, name, _found=True,
2074
possible_transports=[target_branch.bzrdir.root_transport])
2077
super(BranchReferenceFormat, self).__init__()
2078
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2079
self._matchingbzrdir.set_branch_format(self)
2081
def _make_reference_clone_function(format, a_branch):
2082
"""Create a clone() routine for a branch dynamically."""
2083
def clone(to_bzrdir, revision_id=None,
2084
repository_policy=None):
2085
"""See Branch.clone()."""
2086
return format.initialize(to_bzrdir, target_branch=a_branch)
2087
# cannot obey revision_id limits when cloning a reference ...
2088
# FIXME RBC 20060210 either nuke revision_id for clone, or
2089
# emit some sort of warning/error to the caller ?!
2092
def open(self, a_bzrdir, name=None, _found=False, location=None,
2093
possible_transports=None, ignore_fallbacks=False):
2094
"""Return the branch that the branch reference in a_bzrdir points at.
2096
:param a_bzrdir: A BzrDir that contains a branch.
2097
:param name: Name of colocated branch to open, if any
2098
:param _found: a private parameter, do not use it. It is used to
2099
indicate if format probing has already be done.
2100
:param ignore_fallbacks: when set, no fallback branches will be opened
2101
(if there are any). Default is to open fallbacks.
2102
:param location: The location of the referenced branch. If
2103
unspecified, this will be determined from the branch reference in
2105
:param possible_transports: An optional reusable transports list.
2108
format = BranchFormat.find_format(a_bzrdir, name=name)
2109
if format.__class__ != self.__class__:
2110
raise AssertionError("wrong format %r found for %r" %
2112
if location is None:
2113
location = self.get_reference(a_bzrdir)
2114
real_bzrdir = bzrdir.BzrDir.open(
2115
location, possible_transports=possible_transports)
2116
result = real_bzrdir.open_branch(name=name,
2117
ignore_fallbacks=ignore_fallbacks)
2118
# this changes the behaviour of result.clone to create a new reference
2119
# rather than a copy of the content of the branch.
2120
# I did not use a proxy object because that needs much more extensive
2121
# testing, and we are only changing one behaviour at the moment.
2122
# If we decide to alter more behaviours - i.e. the implicit nickname
2123
# then this should be refactored to introduce a tested proxy branch
2124
# and a subclass of that for use in overriding clone() and ....
2126
result.clone = self._make_reference_clone_function(result)
2130
network_format_registry = registry.FormatRegistry()
2131
"""Registry of formats indexed by their network name.
2133
The network name for a branch format is an identifier that can be used when
2134
referring to formats with smart server operations. See
2135
BranchFormat.network_name() for more detail.
2139
# formats which have no format string are not discoverable
2140
# and not independently creatable, so are not registered.
2141
__format5 = BzrBranchFormat5()
2142
__format6 = BzrBranchFormat6()
2143
__format7 = BzrBranchFormat7()
2144
__format8 = BzrBranchFormat8()
2145
BranchFormat.register_format(__format5)
2146
BranchFormat.register_format(BranchReferenceFormat())
2147
BranchFormat.register_format(__format6)
2148
BranchFormat.register_format(__format7)
2149
BranchFormat.register_format(__format8)
2150
BranchFormat.set_default_format(__format7)
2151
_legacy_formats = [BzrBranchFormat4(),
2153
network_format_registry.register(
2154
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2157
class BzrBranch(Branch, _RelockDebugMixin):
2158
"""A branch stored in the actual filesystem.
2160
Note that it's "local" in the context of the filesystem; it doesn't
2161
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2162
it's writable, and can be accessed via the normal filesystem API.
2164
:ivar _transport: Transport for file operations on this branch's
2165
control files, typically pointing to the .bzr/branch directory.
2166
:ivar repository: Repository for this branch.
2167
:ivar base: The url of the base directory for this branch; the one
2168
containing the .bzr directory.
2169
:ivar name: Optional colocated branch name as it exists in the control
2173
def __init__(self, _format=None,
2174
_control_files=None, a_bzrdir=None, name=None,
2175
_repository=None, ignore_fallbacks=False):
2176
"""Create new branch object at a particular location."""
2177
if a_bzrdir is None:
2178
raise ValueError('a_bzrdir must be supplied')
2180
self.bzrdir = a_bzrdir
2181
self._base = self.bzrdir.transport.clone('..').base
2183
# XXX: We should be able to just do
2184
# self.base = self.bzrdir.root_transport.base
2185
# but this does not quite work yet -- mbp 20080522
2186
self._format = _format
2187
if _control_files is None:
2188
raise ValueError('BzrBranch _control_files is None')
2189
self.control_files = _control_files
2190
self._transport = _control_files._transport
2191
self.repository = _repository
2192
Branch.__init__(self)
2195
if self.name is None:
2196
return '%s(%r)' % (self.__class__.__name__, self.base)
2198
return '%s(%r,%r)' % (self.__class__.__name__, self.base, self.name)
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.base)
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.base)
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.base, 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.base)
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.base,
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
