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# Copyright (C) 2005, 2006 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from copy import deepcopy
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from cStringIO import StringIO
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from unittest import TestSuite
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from warnings import warn
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import bzrlib.bzrdir as bzrdir
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from bzrlib.config import TreeConfig
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.delta import compare_trees
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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
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NoSuchRevision, HistoryMissing, NotBranchError,
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DivergedBranches, LockError,
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UninitializableFormat,
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UnlistableBranch, NoSuchFile, NotVersionedError,
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import bzrlib.inventory as inventory
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from bzrlib.inventory import Inventory
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.lockdir import LockDir
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from bzrlib.osutils import (isdir, quotefn,
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rename, splitpath, sha_file,
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file_kind, abspath, normpath, pathjoin,
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from bzrlib.textui import show_status
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from bzrlib.trace import mutter, note
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from bzrlib.tree import EmptyTree, RevisionTree
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from bzrlib.repository import Repository
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from bzrlib.revision import (
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get_intervening_revisions,
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from bzrlib.store import copy_all
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from bzrlib.symbol_versioning import *
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import bzrlib.transactions as transactions
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from bzrlib.transport import Transport, get_transport
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from bzrlib.tree import EmptyTree, RevisionTree
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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-NG branch, format 6\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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# this is really an instance variable - FIXME move it there
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def __init__(self, *ignored, **ignored_too):
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raise NotImplementedError('The Branch class is abstract')
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@deprecated_method(zero_eight)
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def open_downlevel(base):
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"""Open a branch which may be of an old format."""
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return Branch.open(base, _unsupported=True)
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def open(base, _unsupported=False):
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"""Open the repository rooted at base.
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For instance, if the repository is at URL/.bzr/repository,
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Repository.open(URL) -> a Repository instance.
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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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def open_containing(url):
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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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@deprecated_function(zero_eight)
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def initialize(base):
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"""Create a new working tree and branch, rooted at 'base' (url)
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NOTE: This will soon be deprecated in favour of creation
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return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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# seems to be unused, 2006-01-13 mbp
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warn('%s is deprecated' % self.setup_caching)
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self.cache_root = cache_root
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cfg = self.tree_config()
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return cfg.get_option(u"nickname", default=self.base.split('/')[-2])
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def _set_nick(self, nick):
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cfg = self.tree_config()
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cfg.set_option(nick, "nickname")
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assert cfg.get_option("nickname") == nick
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nick = property(_get_nick, _set_nick)
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def lock_write(self):
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raise NotImplementedError('lock_write is abstract')
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raise NotImplementedError('lock_read is abstract')
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raise NotImplementedError('unlock is abstract')
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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 abspath(self, name):
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"""Return absolute filename for something in the branch
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XXX: Robert Collins 20051017 what is this used for? why is it a branch
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method and not a tree method.
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raise NotImplementedError('abspath is abstract')
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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 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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Returns the copied revision count and the failed revisions in a tuple:
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if self.base == from_branch.base:
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nested_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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from_branch.lock_read()
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if last_revision is None:
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pb.update('get source history')
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from_history = from_branch.revision_history()
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last_revision = from_history[-1]
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# no history in the source branch
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last_revision = NULL_REVISION
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return self.repository.fetch(from_branch.repository,
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revision_id=last_revision,
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if nested_pb is not None:
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def get_bound_location(self):
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"""Return the URL of the rbanch 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_master_branch(self):
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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_root_id(self):
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"""Return the id of this branches root"""
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raise NotImplementedError('get_root_id is abstract')
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def print_file(self, file, revision_id):
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"""Print `file` to stdout."""
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raise NotImplementedError('print_file is abstract')
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def append_revision(self, *revision_ids):
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raise NotImplementedError('append_revision is abstract')
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def set_revision_history(self, rev_history):
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raise NotImplementedError('set_revision_history is abstract')
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def revision_history(self):
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"""Return sequence of revision hashes on to this branch."""
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raise NotImplementedError('revision_history is abstract')
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"""Return current revision number for this branch.
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That is equivalent to the number of revisions committed to
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return len(self.revision_history())
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"""Older format branches cannot bind or unbind."""
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raise errors.UpgradeRequired(self.base)
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def last_revision(self):
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"""Return last patch hash, or None if no history."""
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ph = self.revision_history()
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def missing_revisions(self, other, stop_revision=None):
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"""Return a list of new revisions that would perfectly fit.
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If self and other have not diverged, return a list of the revisions
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present in other, but missing from self.
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>>> from bzrlib.workingtree import WorkingTree
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>>> bzrlib.trace.silent = True
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>>> d1 = bzrdir.ScratchDir()
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>>> br1 = d1.open_branch()
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>>> wt1 = d1.open_workingtree()
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>>> d2 = bzrdir.ScratchDir()
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>>> br2 = d2.open_branch()
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>>> wt2 = d2.open_workingtree()
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>>> br1.missing_revisions(br2)
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>>> wt2.commit("lala!", rev_id="REVISION-ID-1")
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>>> br1.missing_revisions(br2)
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>>> br2.missing_revisions(br1)
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>>> wt1.commit("lala!", rev_id="REVISION-ID-1")
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>>> br1.missing_revisions(br2)
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>>> wt2.commit("lala!", rev_id="REVISION-ID-2A")
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>>> br1.missing_revisions(br2)
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>>> wt1.commit("lala!", rev_id="REVISION-ID-2B")
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>>> br1.missing_revisions(br2)
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Traceback (most recent call last):
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DivergedBranches: These branches have diverged. Try merge.
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self_history = self.revision_history()
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self_len = len(self_history)
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other_history = other.revision_history()
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other_len = len(other_history)
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common_index = min(self_len, other_len) -1
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if common_index >= 0 and \
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self_history[common_index] != other_history[common_index]:
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raise DivergedBranches(self, other)
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if stop_revision is None:
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stop_revision = other_len
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assert isinstance(stop_revision, int)
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if stop_revision > other_len:
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raise bzrlib.errors.NoSuchRevision(self, stop_revision)
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return other_history[self_len:stop_revision]
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def update_revisions(self, other, stop_revision=None):
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"""Pull in new perfect-fit revisions.
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:param other: Another Branch to pull from
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:param stop_revision: Updated until the given revision
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raise NotImplementedError('update_revisions is abstract')
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def pullable_revisions(self, other, stop_revision):
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raise NotImplementedError('pullable_revisions is abstract')
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def revision_id_to_revno(self, revision_id):
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"""Given a revision id, return its revno"""
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if revision_id is None:
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history = self.revision_history()
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return history.index(revision_id) + 1
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raise bzrlib.errors.NoSuchRevision(self, revision_id)
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def get_rev_id(self, revno, history=None):
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"""Find the revision id of the specified revno."""
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history = self.revision_history()
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elif revno <= 0 or revno > len(history):
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raise bzrlib.errors.NoSuchRevision(self, revno)
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return history[revno - 1]
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def pull(self, source, overwrite=False, stop_revision=None):
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raise NotImplementedError('pull is abstract')
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def basis_tree(self):
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"""Return `Tree` object for last revision.
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If there are no revisions yet, return an `EmptyTree`.
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return self.repository.revision_tree(self.last_revision())
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def rename_one(self, from_rel, to_rel):
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This can change the directory or the filename or both.
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raise NotImplementedError('rename_one is abstract')
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def move(self, from_paths, to_name):
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to_name must exist as a versioned directory.
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If to_name exists and is a directory, the files are moved into
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it, keeping their old names. If it is a directory,
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Note that to_name is only the last component of the new name;
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this doesn't change the directory.
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This returns a list of (from_path, to_path) pairs for each
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raise NotImplementedError('move is abstract')
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def get_parent(self):
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"""Return the parent location of the branch.
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This is the default location for push/pull/missing. The usual
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pattern is that the user can override it by specifying a
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raise NotImplementedError('get_parent is abstract')
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def get_push_location(self):
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"""Return the None or the location to push this branch to."""
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raise NotImplementedError('get_push_location is abstract')
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def set_push_location(self, location):
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"""Set a new push location for this branch."""
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raise NotImplementedError('set_push_location is abstract')
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def set_parent(self, url):
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raise NotImplementedError('set_parent is abstract')
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"""Synchronise this branch with the master branch if any.
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:return: None or the last_revision pivoted out during the update.
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def check_revno(self, revno):
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Check whether a revno corresponds to any revision.
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Zero (the NULL revision) is considered valid.
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self.check_real_revno(revno)
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def check_real_revno(self, revno):
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Check whether a revno corresponds to a real revision.
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Zero (the NULL revision) is considered invalid
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if revno < 1 or revno > self.revno():
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raise InvalidRevisionNumber(revno)
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def clone(self, *args, **kwargs):
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"""Clone this branch into to_bzrdir preserving all semantic values.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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# for API compatability, until 0.8 releases we provide the old api:
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# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
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# after 0.8 releases, the *args and **kwargs should be changed:
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# def clone(self, to_bzrdir, revision_id=None):
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if (kwargs.get('to_location', None) or
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kwargs.get('revision', None) or
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kwargs.get('basis_branch', None) or
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(len(args) and isinstance(args[0], basestring))):
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# backwards compatability api:
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warn("Branch.clone() has been deprecated for BzrDir.clone() from"
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" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
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basis_branch = args[2]
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basis_branch = kwargs.get('basis_branch', None)
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basis = basis_branch.bzrdir
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revision_id = args[1]
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revision_id = kwargs.get('revision', None)
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# no default to raise if not provided.
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url = kwargs.get('to_location')
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return self.bzrdir.clone(url,
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revision_id=revision_id,
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basis=basis).open_branch()
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# generate args by hand
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revision_id = args[1]
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revision_id = kwargs.get('revision_id', None)
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# no default to raise if not provided.
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to_bzrdir = kwargs.get('to_bzrdir')
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result = self._format.initialize(to_bzrdir)
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self.copy_content_into(result, revision_id=revision_id)
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def sprout(self, to_bzrdir, revision_id=None):
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"""Create a new line of development from the branch, into to_bzrdir.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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result = self._format.initialize(to_bzrdir)
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self.copy_content_into(result, revision_id=revision_id)
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result.set_parent(self.bzrdir.root_transport.base)
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def copy_content_into(self, destination, revision_id=None):
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"""Copy the content of self into destination.
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revision_id: if not None, the revision history in the new branch will
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be truncated to end with revision_id.
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new_history = self.revision_history()
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if revision_id is not None:
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new_history = new_history[:new_history.index(revision_id) + 1]
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rev = self.repository.get_revision(revision_id)
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new_history = rev.get_history(self.repository)[1:]
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destination.set_revision_history(new_history)
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parent = self.get_parent()
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destination.set_parent(parent)
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class BranchFormat(object):
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"""An encapsulation of the initialization and open routines for a format.
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Formats provide three things:
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* An initialization routine,
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Formats are placed in an dict by their format string for reference
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during branch opening. Its not required that these be instances, they
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can be classes themselves with class methods - it simply depends on
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whether state is needed for a given format or not.
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Once a format is deprecated, just deprecate the initialize and open
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methods on the format class. Do not deprecate the object, as the
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object will be created every time regardless.
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_default_format = None
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"""The default format used for new branches."""
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"""The known formats."""
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def find_format(klass, a_bzrdir):
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"""Return the format for the branch object in a_bzrdir."""
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transport = a_bzrdir.get_branch_transport(None)
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format_string = transport.get("format").read()
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return klass._formats[format_string]
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raise NotBranchError(path=transport.base)
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raise errors.UnknownFormatError(format_string)
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def get_default_format(klass):
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"""Return the current default format."""
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return klass._default_format
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def get_format_string(self):
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"""Return the ASCII format string that identifies this format."""
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raise NotImplementedError(self.get_format_string)
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def initialize(self, a_bzrdir):
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"""Create a branch of this format in a_bzrdir."""
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raise NotImplementedError(self.initialized)
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def is_supported(self):
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"""Is this format supported?
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Supported formats can be initialized and opened.
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Unsupported formats may not support initialization or committing or
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some other features depending on the reason for not being supported.
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def open(self, a_bzrdir, _found=False):
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"""Return the branch object for a_bzrdir
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_found is a private parameter, do not use it. It is used to indicate
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if format probing has already be done.
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raise NotImplementedError(self.open)
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def register_format(klass, format):
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klass._formats[format.get_format_string()] = format
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def set_default_format(klass, format):
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klass._default_format = format
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def unregister_format(klass, format):
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assert klass._formats[format.get_format_string()] is format
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del klass._formats[format.get_format_string()]
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class BzrBranchFormat4(BranchFormat):
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"""Bzr branch format 4.
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- a revision-history file.
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- a branch-lock lock file [ to be shared with the bzrdir ]
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def initialize(self, a_bzrdir):
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"""Create a branch of this format in a_bzrdir."""
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mutter('creating branch in %s', a_bzrdir.transport.base)
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branch_transport = a_bzrdir.get_branch_transport(self)
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utf8_files = [('revision-history', ''),
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control_files = LockableFiles(branch_transport, 'branch-lock',
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control_files.create_lock()
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control_files.lock_write()
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for file, content in utf8_files:
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control_files.put_utf8(file, content)
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control_files.unlock()
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return self.open(a_bzrdir, _found=True)
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super(BzrBranchFormat4, self).__init__()
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self._matchingbzrdir = bzrdir.BzrDirFormat6()
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def open(self, a_bzrdir, _found=False):
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"""Return the branch object for a_bzrdir
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_found is a private parameter, do not use it. It is used to indicate
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if format probing has already be done.
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# we are being called directly and must probe.
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raise NotImplementedError
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return BzrBranch(_format=self,
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_control_files=a_bzrdir._control_files,
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_repository=a_bzrdir.open_repository())
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class BzrBranchFormat5(BranchFormat):
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"""Bzr branch format 5.
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- a revision-history file.
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- a lock dir guarding the branch itself
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- all of this stored in a branch/ subdirectory
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- works with shared repositories.
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This format is new in bzr 0.8.
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def get_format_string(self):
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"""See BranchFormat.get_format_string()."""
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return "Bazaar-NG branch format 5\n"
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def initialize(self, a_bzrdir):
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"""Create a branch of this format in a_bzrdir."""
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mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
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branch_transport = a_bzrdir.get_branch_transport(self)
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utf8_files = [('revision-history', ''),
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control_files = LockableFiles(branch_transport, 'lock', LockDir)
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control_files.create_lock()
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control_files.lock_write()
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control_files.put_utf8('format', self.get_format_string())
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for file, content in utf8_files:
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control_files.put_utf8(file, content)
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control_files.unlock()
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return self.open(a_bzrdir, _found=True, )
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super(BzrBranchFormat5, self).__init__()
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self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
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def open(self, a_bzrdir, _found=False):
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"""Return the branch object for a_bzrdir
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_found is a private parameter, do not use it. It is used to indicate
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if format probing has already be done.
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format = BranchFormat.find_format(a_bzrdir)
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assert format.__class__ == self.__class__
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transport = a_bzrdir.get_branch_transport(None)
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control_files = LockableFiles(transport, 'lock', LockDir)
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return BzrBranch5(_format=self,
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_control_files=control_files,
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_repository=a_bzrdir.find_repository())
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return "Bazaar-NG Metadir branch format 5"
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class BranchReferenceFormat(BranchFormat):
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"""Bzr branch reference format.
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Branch references are used in implementing checkouts, they
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act as an alias to the real branch which is at some other url.
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def get_format_string(self):
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"""See BranchFormat.get_format_string()."""
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return "Bazaar-NG Branch Reference Format 1\n"
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def initialize(self, a_bzrdir, target_branch=None):
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"""Create a branch of this format in a_bzrdir."""
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if target_branch is None:
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# this format does not implement branch itself, thus the implicit
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# creation contract must see it as uninitializable
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raise errors.UninitializableFormat(self)
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mutter('creating branch reference in %s', a_bzrdir.transport.base)
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branch_transport = a_bzrdir.get_branch_transport(self)
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# FIXME rbc 20060209 one j-a-ms encoding branch lands this str() cast is not needed.
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branch_transport.put('location', StringIO(str(target_branch.bzrdir.root_transport.base)))
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branch_transport.put('format', StringIO(self.get_format_string()))
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return self.open(a_bzrdir, _found=True)
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super(BranchReferenceFormat, self).__init__()
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self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
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def _make_reference_clone_function(format, a_branch):
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"""Create a clone() routine for a branch dynamically."""
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def clone(to_bzrdir, revision_id=None):
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"""See Branch.clone()."""
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return format.initialize(to_bzrdir, a_branch)
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# cannot obey revision_id limits when cloning a reference ...
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# FIXME RBC 20060210 either nuke revision_id for clone, or
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# emit some sort of warning/error to the caller ?!
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def open(self, a_bzrdir, _found=False):
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"""Return the branch that the branch reference in a_bzrdir points at.
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_found is a private parameter, do not use it. It is used to indicate
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if format probing has already be done.
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format = BranchFormat.find_format(a_bzrdir)
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assert format.__class__ == self.__class__
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transport = a_bzrdir.get_branch_transport(None)
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real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
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result = real_bzrdir.open_branch()
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# this changes the behaviour of result.clone to create a new reference
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# rather than a copy of the content of the branch.
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# I did not use a proxy object because that needs much more extensive
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# testing, and we are only changing one behaviour at the moment.
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# If we decide to alter more behaviours - i.e. the implicit nickname
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# then this should be refactored to introduce a tested proxy branch
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# and a subclass of that for use in overriding clone() and ....
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result.clone = self._make_reference_clone_function(result)
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# formats which have no format string are not discoverable
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# and not independently creatable, so are not registered.
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__default_format = BzrBranchFormat5()
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BranchFormat.register_format(__default_format)
778
BranchFormat.register_format(BranchReferenceFormat())
779
BranchFormat.set_default_format(__default_format)
780
_legacy_formats = [BzrBranchFormat4(),
783
class BzrBranch(Branch):
784
"""A branch stored in the actual filesystem.
786
Note that it's "local" in the context of the filesystem; it doesn't
787
really matter if it's on an nfs/smb/afs/coda/... share, as long as
788
it's writable, and can be accessed via the normal filesystem API.
791
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
792
relax_version_check=DEPRECATED_PARAMETER, _format=None,
793
_control_files=None, a_bzrdir=None, _repository=None):
794
"""Create new branch object at a particular location.
796
transport -- A Transport object, defining how to access files.
798
init -- If True, create new control files in a previously
799
unversioned directory. If False, the branch must already
802
relax_version_check -- If true, the usual check for the branch
803
version is not applied. This is intended only for
804
upgrade/recovery type use; it's not guaranteed that
805
all operations will work on old format branches.
808
self.bzrdir = bzrdir.BzrDir.open(transport.base)
810
self.bzrdir = a_bzrdir
811
self._transport = self.bzrdir.transport.clone('..')
812
self._base = self._transport.base
813
self._format = _format
814
if _control_files is None:
815
raise BzrBadParameterMissing('_control_files')
816
self.control_files = _control_files
817
if deprecated_passed(init):
818
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
819
"deprecated as of bzr 0.8. Please use Branch.create().",
823
# this is slower than before deprecation, oh well never mind.
825
self._initialize(transport.base)
826
self._check_format(_format)
827
if deprecated_passed(relax_version_check):
828
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
829
"relax_version_check parameter is deprecated as of bzr 0.8. "
830
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
834
if (not relax_version_check
835
and not self._format.is_supported()):
836
raise errors.UnsupportedFormatError(
837
'sorry, branch format %r not supported' % fmt,
838
['use a different bzr version',
839
'or remove the .bzr directory'
840
' and "bzr init" again'])
841
if deprecated_passed(transport):
842
warn("BzrBranch.__init__(transport=XXX...): The transport "
843
"parameter is deprecated as of bzr 0.8. "
844
"Please use Branch.open, or bzrdir.open_branch().",
847
self.repository = _repository
850
return '%s(%r)' % (self.__class__.__name__, self.base)
855
# TODO: It might be best to do this somewhere else,
856
# but it is nice for a Branch object to automatically
857
# cache it's information.
858
# Alternatively, we could have the Transport objects cache requests
859
# See the earlier discussion about how major objects (like Branch)
860
# should never expect their __del__ function to run.
861
# XXX: cache_root seems to be unused, 2006-01-13 mbp
862
if hasattr(self, 'cache_root') and self.cache_root is not None:
864
shutil.rmtree(self.cache_root)
867
self.cache_root = None
872
base = property(_get_base, doc="The URL for the root of this branch.")
874
def _finish_transaction(self):
875
"""Exit the current transaction."""
876
return self.control_files._finish_transaction()
878
def get_transaction(self):
879
"""Return the current active transaction.
881
If no transaction is active, this returns a passthrough object
882
for which all data is immediately flushed and no caching happens.
884
# this is an explicit function so that we can do tricky stuff
885
# when the storage in rev_storage is elsewhere.
886
# we probably need to hook the two 'lock a location' and
887
# 'have a transaction' together more delicately, so that
888
# we can have two locks (branch and storage) and one transaction
889
# ... and finishing the transaction unlocks both, but unlocking
890
# does not. - RBC 20051121
891
return self.control_files.get_transaction()
893
def _set_transaction(self, transaction):
894
"""Set a new active transaction."""
895
return self.control_files._set_transaction(transaction)
897
def abspath(self, name):
898
"""See Branch.abspath."""
899
return self.control_files._transport.abspath(name)
901
def _check_format(self, format):
902
"""Identify the branch format if needed.
904
The format is stored as a reference to the format object in
905
self._format for code that needs to check it later.
907
The format parameter is either None or the branch format class
908
used to open this branch.
910
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
913
format = BzrBranchFormat.find_format(self.bzrdir)
914
self._format = format
915
mutter("got branch format %s", self._format)
918
def get_root_id(self):
919
"""See Branch.get_root_id."""
920
tree = self.repository.revision_tree(self.last_revision())
921
return tree.inventory.root.file_id
923
def lock_write(self):
924
# TODO: test for failed two phase locks. This is known broken.
925
self.control_files.lock_write()
926
self.repository.lock_write()
929
# TODO: test for failed two phase locks. This is known broken.
930
self.control_files.lock_read()
931
self.repository.lock_read()
934
# TODO: test for failed two phase locks. This is known broken.
935
self.repository.unlock()
936
self.control_files.unlock()
938
def peek_lock_mode(self):
939
if self.control_files._lock_count == 0:
942
return self.control_files._lock_mode
945
def print_file(self, file, revision_id):
946
"""See Branch.print_file."""
947
return self.repository.print_file(file, revision_id)
950
def append_revision(self, *revision_ids):
951
"""See Branch.append_revision."""
952
for revision_id in revision_ids:
953
mutter("add {%s} to revision-history" % revision_id)
954
rev_history = self.revision_history()
955
rev_history.extend(revision_ids)
956
self.set_revision_history(rev_history)
959
def set_revision_history(self, rev_history):
960
"""See Branch.set_revision_history."""
961
self.control_files.put_utf8(
962
'revision-history', '\n'.join(rev_history))
963
transaction = self.get_transaction()
964
history = transaction.map.find_revision_history()
965
if history is not None:
966
# update the revision history in the identity map.
967
history[:] = list(rev_history)
968
# this call is disabled because revision_history is
969
# not really an object yet, and the transaction is for objects.
970
# transaction.register_dirty(history)
972
transaction.map.add_revision_history(rev_history)
973
# this call is disabled because revision_history is
974
# not really an object yet, and the transaction is for objects.
975
# transaction.register_clean(history)
977
def get_revision_delta(self, revno):
978
"""Return the delta for one revision.
980
The delta is relative to its mainline predecessor, or the
981
empty tree for revision 1.
983
assert isinstance(revno, int)
984
rh = self.revision_history()
985
if not (1 <= revno <= len(rh)):
986
raise InvalidRevisionNumber(revno)
988
# revno is 1-based; list is 0-based
990
new_tree = self.repository.revision_tree(rh[revno-1])
992
old_tree = EmptyTree()
994
old_tree = self.repository.revision_tree(rh[revno-2])
995
return compare_trees(old_tree, new_tree)
998
def revision_history(self):
999
"""See Branch.revision_history."""
1000
transaction = self.get_transaction()
1001
history = transaction.map.find_revision_history()
1002
if history is not None:
1003
mutter("cache hit for revision-history in %s", self)
1004
return list(history)
1005
history = [l.rstrip('\r\n') for l in
1006
self.control_files.get_utf8('revision-history').readlines()]
1007
transaction.map.add_revision_history(history)
1008
# this call is disabled because revision_history is
1009
# not really an object yet, and the transaction is for objects.
1010
# transaction.register_clean(history, precious=True)
1011
return list(history)
1013
def update_revisions(self, other, stop_revision=None):
1014
"""See Branch.update_revisions."""
1015
if stop_revision is None:
1016
stop_revision = other.last_revision()
1017
### Should this be checking is_ancestor instead of revision_history?
1018
if (stop_revision is not None and
1019
stop_revision in self.revision_history()):
1021
self.fetch(other, stop_revision)
1022
pullable_revs = self.pullable_revisions(other, stop_revision)
1023
if len(pullable_revs) > 0:
1024
self.append_revision(*pullable_revs)
1026
def pullable_revisions(self, other, stop_revision):
1027
other_revno = other.revision_id_to_revno(stop_revision)
1029
return self.missing_revisions(other, other_revno)
1030
except DivergedBranches, e:
1032
pullable_revs = get_intervening_revisions(self.last_revision(),
1035
assert self.last_revision() not in pullable_revs
1036
return pullable_revs
1037
except bzrlib.errors.NotAncestor:
1038
if is_ancestor(self.last_revision(), stop_revision, self):
1043
def basis_tree(self):
1044
"""See Branch.basis_tree."""
1045
return self.repository.revision_tree(self.last_revision())
1047
@deprecated_method(zero_eight)
1048
def working_tree(self):
1049
"""Create a Working tree object for this branch."""
1050
from bzrlib.workingtree import WorkingTree
1051
from bzrlib.transport.local import LocalTransport
1052
if (self.base.find('://') != -1 or
1053
not isinstance(self._transport, LocalTransport)):
1054
raise NoWorkingTree(self.base)
1055
return self.bzrdir.open_workingtree()
1058
def pull(self, source, overwrite=False, stop_revision=None):
1059
"""See Branch.pull."""
1062
old_count = len(self.revision_history())
1064
self.update_revisions(source,stop_revision)
1065
except DivergedBranches:
1069
self.set_revision_history(source.revision_history())
1070
new_count = len(self.revision_history())
1071
return new_count - old_count
1075
def get_parent(self):
1076
"""See Branch.get_parent."""
1078
_locs = ['parent', 'pull', 'x-pull']
1081
return self.control_files.get_utf8(l).read().strip('\n')
1086
def get_push_location(self):
1087
"""See Branch.get_push_location."""
1088
config = bzrlib.config.BranchConfig(self)
1089
push_loc = config.get_user_option('push_location')
1092
def set_push_location(self, location):
1093
"""See Branch.set_push_location."""
1094
config = bzrlib.config.LocationConfig(self.base)
1095
config.set_user_option('push_location', location)
1098
def set_parent(self, url):
1099
"""See Branch.set_parent."""
1100
# TODO: Maybe delete old location files?
1101
# URLs should never be unicode, even on the local fs,
1102
# FIXUP this and get_parent in a future branch format bump:
1103
# read and rewrite the file, and have the new format code read
1104
# using .get not .get_utf8. RBC 20060125
1105
self.control_files.put_utf8('parent', url + '\n')
1107
def tree_config(self):
1108
return TreeConfig(self)
1111
class BzrBranch5(BzrBranch):
1112
"""A format 5 branch. This supports new features over plan branches.
1114
It has support for a master_branch which is the data for bound branches.
1122
super(BzrBranch5, self).__init__(_format=_format,
1123
_control_files=_control_files,
1125
_repository=_repository)
1128
def pull(self, source, overwrite=False, stop_revision=None):
1129
"""Updates branch.pull to be bound branch aware."""
1130
bound_location = self.get_bound_location()
1131
if source.base != bound_location:
1132
# not pulling from master, so we need to update master.
1133
master_branch = self.get_master_branch()
1135
master_branch.pull(source)
1136
source = master_branch
1137
return super(BzrBranch5, self).pull(source, overwrite, stop_revision)
1139
def get_bound_location(self):
1141
return self.control_files.get_utf8('bound').read()[:-1]
1142
except errors.NoSuchFile:
1146
def get_master_branch(self):
1147
"""Return the branch we are bound to.
1149
:return: Either a Branch, or None
1151
This could memoise the branch, but if thats done
1152
it must be revalidated on each new lock.
1153
So for now we just dont memoise it.
1154
# RBC 20060304 review this decision.
1156
bound_loc = self.get_bound_location()
1160
return Branch.open(bound_loc)
1161
except (errors.NotBranchError, errors.ConnectionError), e:
1162
raise errors.BoundBranchConnectionFailure(
1166
def set_bound_location(self, location):
1167
"""Set the target where this branch is bound to.
1169
:param location: URL to the target branch
1172
self.control_files.put_utf8('bound', location+'\n')
1175
self.control_files._transport.delete('bound')
1181
def bind(self, other):
1182
"""Bind the local branch the other branch.
1184
:param other: The branch to bind to
1187
# TODO: jam 20051230 Consider checking if the target is bound
1188
# It is debatable whether you should be able to bind to
1189
# a branch which is itself bound.
1190
# Committing is obviously forbidden,
1191
# but binding itself may not be.
1192
# Since we *have* to check at commit time, we don't
1193
# *need* to check here
1196
# we are now equal to or a suffix of other.
1198
# Since we have 'pulled' from the remote location,
1199
# now we should try to pull in the opposite direction
1200
# in case the local tree has more revisions than the
1202
# There may be a different check you could do here
1203
# rather than actually trying to install revisions remotely.
1204
# TODO: capture an exception which indicates the remote branch
1206
# If it is up-to-date, this probably should not be a failure
1208
# lock other for write so the revision-history syncing cannot race
1212
# if this does not error, other now has the same last rev we do
1213
# it can only error if the pull from other was concurrent with
1214
# a commit to other from someone else.
1216
# until we ditch revision-history, we need to sync them up:
1217
self.set_revision_history(other.revision_history())
1218
# now other and self are up to date with each other and have the
1219
# same revision-history.
1223
self.set_bound_location(other.base)
1227
"""If bound, unbind"""
1228
return self.set_bound_location(None)
1232
"""Synchronise this branch with the master branch if any.
1234
:return: None or the last_revision that was pivoted out during the
1237
master = self.get_master_branch()
1238
if master is not None:
1239
old_tip = self.last_revision()
1240
self.pull(master, overwrite=True)
1241
if old_tip in self.repository.get_ancestry(self.last_revision()):
1247
class BranchTestProviderAdapter(object):
1248
"""A tool to generate a suite testing multiple branch formats at once.
1250
This is done by copying the test once for each transport and injecting
1251
the transport_server, transport_readonly_server, and branch_format
1252
classes into each copy. Each copy is also given a new id() to make it
1256
def __init__(self, transport_server, transport_readonly_server, formats):
1257
self._transport_server = transport_server
1258
self._transport_readonly_server = transport_readonly_server
1259
self._formats = formats
1261
def adapt(self, test):
1262
result = TestSuite()
1263
for branch_format, bzrdir_format in self._formats:
1264
new_test = deepcopy(test)
1265
new_test.transport_server = self._transport_server
1266
new_test.transport_readonly_server = self._transport_readonly_server
1267
new_test.bzrdir_format = bzrdir_format
1268
new_test.branch_format = branch_format
1269
def make_new_test_id():
1270
new_id = "%s(%s)" % (new_test.id(), branch_format.__class__.__name__)
1271
return lambda: new_id
1272
new_test.id = make_new_test_id()
1273
result.addTest(new_test)
1277
######################################################################
1281
@deprecated_function(zero_eight)
1282
def ScratchBranch(*args, **kwargs):
1283
"""See bzrlib.bzrdir.ScratchDir."""
1284
d = ScratchDir(*args, **kwargs)
1285
return d.open_branch()
1288
@deprecated_function(zero_eight)
1289
def is_control_file(*args, **kwargs):
1290
"""See bzrlib.workingtree.is_control_file."""
1291
return bzrlib.workingtree.is_control_file(*args, **kwargs)
added
removed
bzrlib/branch.py
