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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 __future__ import absolute_import
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from cStringIO import StringIO
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from bzrlib import (
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config as _mod_config,
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revision as _mod_revision,
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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
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from bzrlib.tag import (
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from bzrlib.i18n import gettext, ngettext
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# Explicitly import bzrlib.bzrdir so that the BzrProber
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# is guaranteed to be registered.
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from bzrlib.decorators import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.hooks import Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin, LogicalLockResult
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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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class Branch(controldir.ControlComponent):
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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; using control_url and
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control_transport is more standardized.
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:ivar hooks: An instance of BranchHooks.
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:ivar _master_branch_cache: cached result of get_master_branch, see
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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 control_transport(self):
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return self._transport
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def user_transport(self):
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return self.bzrdir.user_transport
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def __init__(self, possible_transports=None):
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self.tags = self._format.make_tags(self)
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# override this to set the strategy for storing tags
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return DisabledTags(self)
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def __init__(self, *ignored, **ignored_too):
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self.tags = self._make_tags()
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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._tags_bytes = None
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self._last_revision_info_cache = None
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self._master_branch_cache = None
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self._merge_sorted_revisions_cache = None
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self._open_hook(possible_transports)
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hooks = Branch.hooks['open']
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def _open_hook(self, possible_transports):
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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, possible_transports):
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"""Activate the branch/repository from url as a fallback repository."""
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for existing_fallback_repo in self.repository._fallback_repositories:
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if existing_fallback_repo.user_url == url:
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# This fallback is already configured. This probably only
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# happens because ControlDir.sprout is a horrible mess. To avoid
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# confusing _unstack we don't add this a second time.
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mutter('duplicate activation of fallback %r on %r', url, self)
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repo = self._get_fallback_repository(url, possible_transports)
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if repo.has_same_location(self.repository):
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raise errors.UnstackableLocationError(self.user_url, url)
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self.repository.add_fallback_repository(repo)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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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 = controldir.ControlDir.open(base,
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possible_transports=possible_transports, _unsupported=_unsupported)
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return control.open_branch(unsupported=_unsupported,
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possible_transports=possible_transports)
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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)
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def open_from_transport(transport, name=None, _unsupported=False,
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possible_transports=None):
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def open_from_transport(transport, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = controldir.ControlDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported,
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possible_transports=possible_transports)
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(_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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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 = controldir.ControlDir.open_containing(url,
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control, relpath = bzrdir.BzrDir.open_containing(url,
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possible_transports)
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branch = control.open_branch(possible_transports=possible_transports)
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return (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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return control.open_branch(), relpath
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def get_config(self):
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"""Get a bzrlib.config.BranchConfig for this Branch.
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This can then be used to get and set configuration options for the
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:return: A bzrlib.config.BranchConfig.
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return _mod_config.BranchConfig(self)
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def get_config_stack(self):
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"""Get a bzrlib.config.BranchStack for this Branch.
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This can then be used to get and set configuration options for the
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:return: A bzrlib.config.BranchStack.
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return _mod_config.BranchStack(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 store_uncommitted(self, creator):
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"""Store uncommitted changes from a ShelfCreator.
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:param creator: The ShelfCreator containing uncommitted changes, or
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None to delete any stored changes.
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:raises: ChangesAlreadyStored if the branch already has changes.
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raise NotImplementedError(self.store_uncommitted)
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def get_unshelver(self, tree):
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"""Return a shelf.Unshelver for this branch and tree.
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:param tree: The tree to use to construct the Unshelver.
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:return: an Unshelver or None if no changes are stored.
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raise NotImplementedError(self.get_unshelver)
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def _get_fallback_repository(self, url, possible_transports):
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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, possible_transports=possible_transports)
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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
286
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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if self._tags_bytes is None:
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self._tags_bytes = self._transport.get_bytes('tags')
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return self._tags_bytes
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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 and self.user_url == master.user_url:
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raise errors.RecursiveBind(self.user_url)
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if master is not None:
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# return the master branch value
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except errors.RecursiveBind, e:
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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))
313
return config.get_nickname()
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return BranchConfig(self)
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return self.get_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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:return: A dictionary mapping revision_id => dotted revno.
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last_revision = self.last_revision()
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revision_graph = repository._old_get_graph(self.repository,
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merge_sorted_revisions = tsort.merge_sort(
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
472
in self.iter_merge_sorted_revisions())
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for seq_num, rev_id, depth, revno, end_of_merge
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in 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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* 'with-merges-without-common-ancestry' - filter out revisions
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that are in both ancestries
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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
510
* 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.
520
# Note: depth and revno values are in the context of the branch so
521
# 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)
532
# 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_start_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))
540
raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
543
start_revision_id, stop_revision_id, stop_rule):
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"""Iterate over an inclusive range of sorted revisions."""
545
rev_iter = iter(merge_sorted_revisions)
546
if start_revision_id is not None:
547
for node in rev_iter:
549
if rev_id != start_revision_id:
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# The decision to include the start or not
553
# depends on the stop_rule if a stop is provided
554
# so pop this node back into the iterator
555
rev_iter = itertools.chain(iter([node]), rev_iter)
557
if stop_revision_id is None:
559
for node in rev_iter:
561
yield (rev_id, node.merge_depth, node.revno,
563
elif stop_rule == 'exclude':
564
for node in rev_iter:
566
if rev_id == stop_revision_id:
568
yield (rev_id, node.merge_depth, node.revno,
570
elif stop_rule == 'include':
571
for node in rev_iter:
573
yield (rev_id, node.merge_depth, node.revno,
575
if rev_id == stop_revision_id:
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elif stop_rule == 'with-merges-without-common-ancestry':
578
# We want to exclude all revisions that are already part of the
579
# stop_revision_id ancestry.
580
graph = self.repository.get_graph()
581
ancestors = graph.find_unique_ancestors(start_revision_id,
583
for node in rev_iter:
585
if rev_id not in ancestors:
587
yield (rev_id, node.merge_depth, node.revno,
589
elif stop_rule == 'with-merges':
590
stop_rev = self.repository.get_revision(stop_revision_id)
591
if stop_rev.parent_ids:
592
left_parent = stop_rev.parent_ids[0]
594
left_parent = _mod_revision.NULL_REVISION
595
# left_parent is the actual revision we want to stop logging at,
596
# since we want to show the merged revisions after the stop_rev too
597
reached_stop_revision_id = False
598
revision_id_whitelist = []
599
for node in rev_iter:
601
if rev_id == left_parent:
602
# reached the left parent after the stop_revision
604
if (not reached_stop_revision_id or
605
rev_id in revision_id_whitelist):
606
yield (rev_id, node.merge_depth, node.revno,
608
if reached_stop_revision_id or rev_id == stop_revision_id:
609
# only do the merged revs of rev_id from now on
610
rev = self.repository.get_revision(rev_id)
612
reached_stop_revision_id = True
613
revision_id_whitelist.extend(rev.parent_ids)
615
raise ValueError('invalid stop_rule %r' % stop_rule)
617
def _filter_start_non_ancestors(self, rev_iter):
618
# If we started from a dotted revno, we want to consider it as a tip
619
# and don't want to yield revisions that are not part of its
620
# ancestry. Given the order guaranteed by the merge sort, we will see
621
# uninteresting descendants of the first parent of our tip before the
623
first = rev_iter.next()
624
(rev_id, merge_depth, revno, end_of_merge) = first
627
# We start at a mainline revision so by definition, all others
628
# revisions in rev_iter are ancestors
629
for node in rev_iter:
634
pmap = self.repository.get_parent_map([rev_id])
635
parents = pmap.get(rev_id, [])
637
whitelist.update(parents)
639
# If there is no parents, there is nothing of interest left
641
# FIXME: It's hard to test this scenario here as this code is never
642
# called in that case. -- vila 20100322
645
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
647
if rev_id in whitelist:
648
pmap = self.repository.get_parent_map([rev_id])
649
parents = pmap.get(rev_id, [])
650
whitelist.remove(rev_id)
651
whitelist.update(parents)
653
# We've reached the mainline, there is nothing left to
657
# A revision that is not part of the ancestry of our
660
yield (rev_id, merge_depth, revno, end_of_merge)
662
205
def leave_lock_in_place(self):
663
206
"""Tell this branch object not to release the physical lock when this
664
207
object is unlocked.
666
209
If lock_write doesn't return a token, then this method is not supported.
668
211
self.control_files.leave_in_place()
740
293
:param committer: Optional committer to set for commit.
741
294
:param revprops: Optional dictionary of revision properties.
742
295
:param revision_id: Optional revision id.
743
:param lossy: Whether to discard data that can not be natively
744
represented, when pushing to a foreign VCS
747
if config_stack is None:
748
config_stack = self.get_config_stack()
750
return self.repository.get_commit_builder(self, parents, config_stack,
751
timestamp, timezone, committer, revprops, revision_id,
299
config = self.get_config()
301
return self.repository.get_commit_builder(self, parents, config,
302
timestamp, timezone, committer, revprops, revision_id)
754
304
def get_master_branch(self, possible_transports=None):
755
305
"""Return the branch we are bound to.
757
307
:return: Either a Branch, or None
761
@deprecated_method(deprecated_in((2, 5, 0)))
762
311
def get_revision_delta(self, revno):
763
312
"""Return the delta for one revision.
765
314
The delta is relative to its mainline predecessor, or the
766
315
empty tree for revision 1.
769
revid = self.get_rev_id(revno)
770
except errors.NoSuchRevision:
317
rh = self.revision_history()
318
if not (1 <= revno <= len(rh)):
771
319
raise errors.InvalidRevisionNumber(revno)
772
return self.repository.get_revision_delta(revid)
774
def get_stacked_on_url(self):
775
"""Get the URL this branch is stacked against.
777
:raises NotStacked: If the branch is not stacked.
778
:raises UnstackableBranchFormat: If the branch does not support
781
raise NotImplementedError(self.get_stacked_on_url)
320
return self.repository.get_revision_delta(rh[revno-1])
783
322
def print_file(self, file, revision_id):
784
323
"""Print `file` to stdout."""
785
324
raise NotImplementedError(self.print_file)
788
def set_last_revision_info(self, revno, revision_id):
789
"""Set the last revision of this branch.
791
The caller is responsible for checking that the revno is correct
792
for this revision id.
794
It may be possible to set the branch last revision to an id not
795
present in the repository. However, branches can also be
796
configured to check constraints on history, in which case this may not
799
raise NotImplementedError(self.set_last_revision_info)
802
def generate_revision_history(self, revision_id, last_rev=None,
804
"""See Branch.generate_revision_history"""
805
graph = self.repository.get_graph()
806
(last_revno, last_revid) = self.last_revision_info()
807
known_revision_ids = [
808
(last_revid, last_revno),
809
(_mod_revision.NULL_REVISION, 0),
811
if last_rev is not None:
812
if not graph.is_ancestor(last_rev, revision_id):
813
# our previous tip is not merged into stop_revision
814
raise errors.DivergedBranches(self, other_branch)
815
revno = graph.find_distance_to_null(revision_id, known_revision_ids)
816
self.set_last_revision_info(revno, revision_id)
819
def set_parent(self, url):
820
"""See Branch.set_parent."""
821
# TODO: Maybe delete old location files?
822
# URLs should never be unicode, even on the local fs,
823
# FIXUP this and get_parent in a future branch format bump:
824
# read and rewrite the file. RBC 20060125
826
if isinstance(url, unicode):
828
url = url.encode('ascii')
829
except UnicodeEncodeError:
830
raise errors.InvalidURL(url,
831
"Urls must be 7-bit ascii, "
832
"use bzrlib.urlutils.escape")
833
url = urlutils.relative_url(self.base, url)
834
self._set_parent_location(url)
837
def set_stacked_on_url(self, url):
838
"""Set the URL this branch is stacked against.
840
:raises UnstackableBranchFormat: If the branch does not support
842
:raises UnstackableRepositoryFormat: If the repository does not support
845
if not self._format.supports_stacking():
846
raise errors.UnstackableBranchFormat(self._format, self.user_url)
847
# XXX: Changing from one fallback repository to another does not check
848
# that all the data you need is present in the new fallback.
849
# Possibly it should.
850
self._check_stackable_repo()
853
old_url = self.get_stacked_on_url()
854
except (errors.NotStacked, errors.UnstackableBranchFormat,
855
errors.UnstackableRepositoryFormat):
859
self._activate_fallback_location(url,
860
possible_transports=[self.bzrdir.root_transport])
861
# write this out after the repository is stacked to avoid setting a
862
# stacked config that doesn't work.
863
self._set_config_location('stacked_on_location', url)
866
"""Change a branch to be unstacked, copying data as needed.
868
Don't call this directly, use set_stacked_on_url(None).
870
pb = ui.ui_factory.nested_progress_bar()
872
pb.update(gettext("Unstacking"))
873
# The basic approach here is to fetch the tip of the branch,
874
# including all available ghosts, from the existing stacked
875
# repository into a new repository object without the fallbacks.
877
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
878
# correct for CHKMap repostiories
879
old_repository = self.repository
880
if len(old_repository._fallback_repositories) != 1:
881
raise AssertionError("can't cope with fallback repositories "
882
"of %r (fallbacks: %r)" % (old_repository,
883
old_repository._fallback_repositories))
884
# Open the new repository object.
885
# Repositories don't offer an interface to remove fallback
886
# repositories today; take the conceptually simpler option and just
887
# reopen it. We reopen it starting from the URL so that we
888
# get a separate connection for RemoteRepositories and can
889
# stream from one of them to the other. This does mean doing
890
# separate SSH connection setup, but unstacking is not a
891
# common operation so it's tolerable.
892
new_bzrdir = controldir.ControlDir.open(
893
self.bzrdir.root_transport.base)
894
new_repository = new_bzrdir.find_repository()
895
if new_repository._fallback_repositories:
896
raise AssertionError("didn't expect %r to have "
897
"fallback_repositories"
898
% (self.repository,))
899
# Replace self.repository with the new repository.
900
# Do our best to transfer the lock state (i.e. lock-tokens and
901
# lock count) of self.repository to the new repository.
902
lock_token = old_repository.lock_write().repository_token
903
self.repository = new_repository
904
if isinstance(self, remote.RemoteBranch):
905
# Remote branches can have a second reference to the old
906
# repository that need to be replaced.
907
if self._real_branch is not None:
908
self._real_branch.repository = new_repository
909
self.repository.lock_write(token=lock_token)
910
if lock_token is not None:
911
old_repository.leave_lock_in_place()
912
old_repository.unlock()
913
if lock_token is not None:
914
# XXX: self.repository.leave_lock_in_place() before this
915
# function will not be preserved. Fortunately that doesn't
916
# affect the current default format (2a), and would be a
917
# corner-case anyway.
918
# - Andrew Bennetts, 2010/06/30
919
self.repository.dont_leave_lock_in_place()
923
old_repository.unlock()
924
except errors.LockNotHeld:
927
if old_lock_count == 0:
928
raise AssertionError(
929
'old_repository should have been locked at least once.')
930
for i in range(old_lock_count-1):
931
self.repository.lock_write()
932
# Fetch from the old repository into the new.
933
old_repository.lock_read()
935
# XXX: If you unstack a branch while it has a working tree
936
# with a pending merge, the pending-merged revisions will no
937
# longer be present. You can (probably) revert and remerge.
939
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
940
except errors.TagsNotSupported:
941
tags_to_fetch = set()
942
fetch_spec = vf_search.NotInOtherForRevs(self.repository,
943
old_repository, required_ids=[self.last_revision()],
944
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
945
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
947
old_repository.unlock()
951
def _set_tags_bytes(self, bytes):
952
"""Mirror method for _get_tags_bytes.
954
:seealso: Branch._get_tags_bytes.
956
op = cleanup.OperationWithCleanups(self._set_tags_bytes_locked)
957
op.add_cleanup(self.lock_write().unlock)
958
return op.run_simple(bytes)
960
def _set_tags_bytes_locked(self, bytes):
961
self._tags_bytes = bytes
962
return self._transport.put_bytes('tags', bytes)
326
def set_revision_history(self, rev_history):
327
raise NotImplementedError(self.set_revision_history)
964
329
def _cache_revision_history(self, rev_history):
965
330
"""Set the cached revision history to rev_history.
1034
399
def unbind(self):
1035
400
"""Older format branches cannot bind or unbind."""
1036
raise errors.UpgradeRequired(self.user_url)
401
raise errors.UpgradeRequired(self.base)
403
def set_append_revisions_only(self, enabled):
404
"""Older format branches are never restricted to append-only"""
405
raise errors.UpgradeRequired(self.base)
1038
407
def last_revision(self):
1039
408
"""Return last revision id, or NULL_REVISION."""
1040
409
return self.last_revision_info()[1]
1043
411
def last_revision_info(self):
1044
412
"""Return information about the last revision.
1046
:return: A tuple (revno, revision_id).
1048
if self._last_revision_info_cache is None:
1049
self._last_revision_info_cache = self._read_last_revision_info()
1050
return self._last_revision_info_cache
1052
def _read_last_revision_info(self):
1053
raise NotImplementedError(self._read_last_revision_info)
1055
def import_last_revision_info_and_tags(self, source, revno, revid,
1057
"""Set the last revision info, importing from another repo if necessary.
1059
This is used by the bound branch code to upload a revision to
1060
the master branch first before updating the tip of the local branch.
1061
Revisions referenced by source's tags are also transferred.
1063
:param source: Source branch to optionally fetch from
1064
:param revno: Revision number of the new tip
1065
:param revid: Revision id of the new tip
1066
:param lossy: Whether to discard metadata that can not be
1067
natively represented
1068
:return: Tuple with the new revision number and revision id
1069
(should only be different from the arguments when lossy=True)
1071
if not self.repository.has_same_location(source.repository):
1072
self.fetch(source, revid)
1073
self.set_last_revision_info(revno, revid)
1074
return (revno, revid)
414
:return: A tuple (revno, last_revision_id).
416
rh = self.revision_history()
419
return (revno, rh[-1])
421
return (0, _mod_revision.NULL_REVISION)
423
def missing_revisions(self, other, stop_revision=None):
424
"""Return a list of new revisions that would perfectly fit.
426
If self and other have not diverged, return a list of the revisions
427
present in other, but missing from self.
429
self_history = self.revision_history()
430
self_len = len(self_history)
431
other_history = other.revision_history()
432
other_len = len(other_history)
433
common_index = min(self_len, other_len) -1
434
if common_index >= 0 and \
435
self_history[common_index] != other_history[common_index]:
436
raise errors.DivergedBranches(self, other)
438
if stop_revision is None:
439
stop_revision = other_len
441
if stop_revision > other_len:
442
raise errors.NoSuchRevision(self, stop_revision)
443
return other_history[self_len:stop_revision]
445
def update_revisions(self, other, stop_revision=None):
446
"""Pull in new perfect-fit revisions.
448
:param other: Another Branch to pull from
449
:param stop_revision: Updated until the given revision
452
raise NotImplementedError(self.update_revisions)
1076
454
def revision_id_to_revno(self, revision_id):
1077
455
"""Given a revision id, return its revno"""
1078
456
if _mod_revision.is_null(revision_id):
1080
history = self._revision_history()
458
history = self.revision_history()
1082
460
return history.index(revision_id) + 1
1083
461
except ValueError:
1084
462
raise errors.NoSuchRevision(self, revision_id)
1087
464
def get_rev_id(self, revno, history=None):
1088
465
"""Find the revision id of the specified revno."""
1090
467
return _mod_revision.NULL_REVISION
1091
last_revno, last_revid = self.last_revision_info()
1092
if revno == last_revno:
1094
if revno <= 0 or revno > last_revno:
469
history = self.revision_history()
470
if revno <= 0 or revno > len(history):
1095
471
raise errors.NoSuchRevision(self, revno)
1096
distance_from_last = last_revno - revno
1097
if len(self._partial_revision_history_cache) <= distance_from_last:
1098
self._extend_partial_history(distance_from_last)
1099
return self._partial_revision_history_cache[distance_from_last]
472
return history[revno - 1]
1101
474
def pull(self, source, overwrite=False, stop_revision=None,
1102
possible_transports=None, *args, **kwargs):
475
possible_transports=None):
1103
476
"""Mirror source into this branch.
1105
478
This branch is considered to be 'local', having low latency.
1107
480
:returns: PullResult instance
1109
return InterBranch.get(source, self).pull(overwrite=overwrite,
1110
stop_revision=stop_revision,
1111
possible_transports=possible_transports, *args, **kwargs)
482
raise NotImplementedError(self.pull)
1113
def push(self, target, overwrite=False, stop_revision=None, lossy=False,
484
def push(self, target, overwrite=False, stop_revision=None):
1115
485
"""Mirror this branch into target.
1117
487
This branch is considered to be 'local', having low latency.
1119
return InterBranch.get(self, target).push(overwrite, stop_revision,
1120
lossy, *args, **kwargs)
489
raise NotImplementedError(self.push)
1122
491
def basis_tree(self):
1123
492
"""Return `Tree` object for last revision."""
1124
493
return self.repository.revision_tree(self.last_revision())
495
def rename_one(self, from_rel, to_rel):
498
This can change the directory or the filename or both.
500
raise NotImplementedError(self.rename_one)
502
def move(self, from_paths, to_name):
505
to_name must exist as a versioned directory.
507
If to_name exists and is a directory, the files are moved into
508
it, keeping their old names. If it is a directory,
510
Note that to_name is only the last component of the new name;
511
this doesn't change the directory.
513
This returns a list of (from_path, to_path) pairs for each
516
raise NotImplementedError(self.move)
1126
518
def get_parent(self):
1127
519
"""Return the parent location of the branch.
1129
This is the default location for pull/missing. The usual
521
This is the default location for push/pull/missing. The usual
1130
522
pattern is that the user can override it by specifying a
1133
parent = self._get_parent_location()
1136
# This is an old-format absolute path to a local branch
1137
# turn it into a url
1138
if parent.startswith('/'):
1139
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1141
return urlutils.join(self.base[:-1], parent)
1142
except errors.InvalidURLJoin, e:
1143
raise errors.InaccessibleParent(parent, self.user_url)
1145
def _get_parent_location(self):
1146
raise NotImplementedError(self._get_parent_location)
525
raise NotImplementedError(self.get_parent)
1148
527
def _set_config_location(self, name, url, config=None,
1149
528
make_relative=False):
1150
529
if config is None:
1151
config = self.get_config_stack()
530
config = self.get_config()
1154
533
elif make_relative:
1155
534
url = urlutils.relative_url(self.base, url)
1156
config.set(name, url)
535
config.set_user_option(name, url, warn_masked=True)
1158
537
def _get_config_location(self, name, config=None):
1159
538
if config is None:
1160
config = self.get_config_stack()
1161
location = config.get(name)
539
config = self.get_config()
540
location = config.get_user_option(name)
1162
541
if location == '':
1166
def get_child_submit_format(self):
1167
"""Return the preferred format of submissions to this branch."""
1168
return self.get_config_stack().get('child_submit_format')
1170
545
def get_submit_branch(self):
1171
546
"""Return the submit location of the branch.
1256
614
raise errors.InvalidRevisionNumber(revno)
1258
616
@needs_read_lock
1259
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
617
def clone(self, to_bzrdir, revision_id=None):
1260
618
"""Clone this branch into to_bzrdir preserving all semantic values.
1262
Most API users will want 'create_clone_on_transport', which creates a
1263
new bzrdir and branch on the fly.
1265
620
revision_id: if not None, the revision history in the new branch will
1266
621
be truncated to end with revision_id.
1268
result = to_bzrdir.create_branch()
1271
if repository_policy is not None:
1272
repository_policy.configure_branch(result)
1273
self.copy_content_into(result, revision_id=revision_id)
623
result = self._format.initialize(to_bzrdir)
624
self.copy_content_into(result, revision_id=revision_id)
1278
627
@needs_read_lock
1279
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None,
628
def sprout(self, to_bzrdir, revision_id=None):
1281
629
"""Create a new line of development from the branch, into to_bzrdir.
1283
to_bzrdir controls the branch format.
1285
631
revision_id: if not None, the revision history in the new branch will
1286
632
be truncated to end with revision_id.
1288
if (repository_policy is not None and
1289
repository_policy.requires_stacking()):
1290
to_bzrdir._format.require_stacking(_skip_repo=True)
1291
result = to_bzrdir.create_branch(repository=repository)
1294
if repository_policy is not None:
1295
repository_policy.configure_branch(result)
1296
self.copy_content_into(result, revision_id=revision_id)
1297
master_url = self.get_bound_location()
1298
if master_url is None:
1299
result.set_parent(self.bzrdir.root_transport.base)
1301
result.set_parent(master_url)
634
result = self._format.initialize(to_bzrdir)
635
self.copy_content_into(result, revision_id=revision_id)
636
result.set_parent(self.bzrdir.root_transport.base)
1306
639
def _synchronize_history(self, destination, revision_id):
1307
640
"""Synchronize last revision and revision history between branches.
1309
642
This version is most efficient when the destination is also a
1310
BzrBranch6, but works for BzrBranch5, as long as the destination's
1311
repository contains all the lefthand ancestors of the intended
1312
last_revision. If not, set_last_revision_info will fail.
643
BzrBranch5, but works for BzrBranch6 as long as the revision
644
history is the true lefthand parent history, and all of the revisions
645
are in the destination's repository. If not, set_revision_history
1314
648
:param destination: The branch to copy the history into
1315
649
:param revision_id: The revision-id to truncate history at. May
1316
650
be None to copy complete history.
1318
source_revno, source_revision_id = self.last_revision_info()
1319
if revision_id is None:
1320
revno, revision_id = source_revno, source_revision_id
1322
graph = self.repository.get_graph()
652
if revision_id == _mod_revision.NULL_REVISION:
654
new_history = self.revision_history()
655
if revision_id is not None and new_history != []:
1324
revno = graph.find_distance_to_null(revision_id,
1325
[(source_revision_id, source_revno)])
1326
except errors.GhostRevisionsHaveNoRevno:
1327
# Default to 1, if we can't find anything else
1329
destination.set_last_revision_info(revno, revision_id)
657
new_history = new_history[:new_history.index(revision_id) + 1]
659
rev = self.repository.get_revision(revision_id)
660
new_history = rev.get_history(self.repository)[1:]
661
destination.set_revision_history(new_history)
1331
664
def copy_content_into(self, destination, revision_id=None):
1332
665
"""Copy the content of self into destination.
1334
667
revision_id: if not None, the revision history in the new branch will
1335
668
be truncated to end with revision_id.
1337
return InterBranch.get(self, destination).copy_content_into(
1338
revision_id=revision_id)
1340
def update_references(self, target):
1341
if not getattr(self._format, 'supports_reference_locations', False):
1343
reference_dict = self._get_all_reference_info()
1344
if len(reference_dict) == 0:
1346
old_base = self.base
1347
new_base = target.base
1348
target_reference_dict = target._get_all_reference_info()
1349
for file_id, (tree_path, branch_location) in (
1350
reference_dict.items()):
1351
branch_location = urlutils.rebase_url(branch_location,
1353
target_reference_dict.setdefault(
1354
file_id, (tree_path, branch_location))
1355
target._set_all_reference_info(target_reference_dict)
670
self._synchronize_history(destination, revision_id)
672
parent = self.get_parent()
673
except errors.InaccessibleParent, e:
674
mutter('parent was not accessible to copy: %s', e)
677
destination.set_parent(parent)
678
self.tags.merge_to(destination.tags)
1357
680
@needs_read_lock
1358
def check(self, refs):
1359
682
"""Check consistency of the branch.
1361
684
In particular this checks that revisions given in the revision-history
1362
do actually match up in the revision graph, and that they're all
685
do actually match up in the revision graph, and that they're all
1363
686
present in the repository.
1365
688
Callers will typically also want to check the repository.
1367
:param refs: Calculated refs for this branch as specified by
1368
branch._get_check_refs()
1369
690
:return: A BranchCheckResult.
1371
result = BranchCheckResult(self)
692
mainline_parent_id = None
1372
693
last_revno, last_revision_id = self.last_revision_info()
1373
actual_revno = refs[('lefthand-distance', last_revision_id)]
1374
if actual_revno != last_revno:
1375
result.errors.append(errors.BzrCheckError(
1376
'revno does not match len(mainline) %s != %s' % (
1377
last_revno, actual_revno)))
1378
# TODO: We should probably also check that self.revision_history
1379
# matches the repository for older branch formats.
1380
# If looking for the code that cross-checks repository parents against
1381
# the Graph.iter_lefthand_ancestry output, that is now a repository
694
real_rev_history = list(self.repository.iter_reverse_revision_history(
696
real_rev_history.reverse()
697
if len(real_rev_history) != last_revno:
698
raise errors.BzrCheckError('revno does not match len(mainline)'
699
' %s != %s' % (last_revno, len(real_rev_history)))
700
# TODO: We should probably also check that real_rev_history actually
701
# matches self.revision_history()
702
for revision_id in real_rev_history:
704
revision = self.repository.get_revision(revision_id)
705
except errors.NoSuchRevision, e:
706
raise errors.BzrCheckError("mainline revision {%s} not in repository"
708
# In general the first entry on the revision history has no parents.
709
# But it's not illegal for it to have parents listed; this can happen
710
# in imports from Arch when the parents weren't reachable.
711
if mainline_parent_id is not None:
712
if mainline_parent_id not in revision.parent_ids:
713
raise errors.BzrCheckError("previous revision {%s} not listed among "
715
% (mainline_parent_id, revision_id))
716
mainline_parent_id = revision_id
717
return BranchCheckResult(self)
1385
def _get_checkout_format(self, lightweight=False):
719
def _get_checkout_format(self):
1386
720
"""Return the most suitable metadir for a checkout of this branch.
1387
721
Weaves are used if this branch's repository uses weaves.
1389
format = self.repository.bzrdir.checkout_metadir()
1390
format.set_branch_format(self._format)
723
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
724
from bzrlib.repofmt import weaverepo
725
format = bzrdir.BzrDirMetaFormat1()
726
format.repository_format = weaverepo.RepositoryFormat7()
728
format = self.repository.bzrdir.checkout_metadir()
729
format.set_branch_format(self._format)
1393
def create_clone_on_transport(self, to_transport, revision_id=None,
1394
stacked_on=None, create_prefix=False, use_existing_dir=False,
1396
"""Create a clone of this branch and its bzrdir.
1398
:param to_transport: The transport to clone onto.
1399
:param revision_id: The revision id to use as tip in the new branch.
1400
If None the tip is obtained from this branch.
1401
:param stacked_on: An optional URL to stack the clone on.
1402
:param create_prefix: Create any missing directories leading up to
1404
:param use_existing_dir: Use an existing directory if one exists.
1406
# XXX: Fix the bzrdir API to allow getting the branch back from the
1407
# clone call. Or something. 20090224 RBC/spiv.
1408
# XXX: Should this perhaps clone colocated branches as well,
1409
# rather than just the default branch? 20100319 JRV
1410
if revision_id is None:
1411
revision_id = self.last_revision()
1412
dir_to = self.bzrdir.clone_on_transport(to_transport,
1413
revision_id=revision_id, stacked_on=stacked_on,
1414
create_prefix=create_prefix, use_existing_dir=use_existing_dir,
1416
return dir_to.open_branch()
1418
732
def create_checkout(self, to_location, revision_id=None,
1419
733
lightweight=False, accelerator_tree=None,
1420
734
hardlink=False):
1421
735
"""Create a checkout of a branch.
1423
737
:param to_location: The url to produce the checkout at
1424
738
:param revision_id: The revision to check out
1425
739
:param lightweight: If True, produce a lightweight checkout, otherwise,
1426
produce a bound branch (heavyweight checkout)
740
produce a bound branch (heavyweight checkout)
1427
741
:param accelerator_tree: A tree which can be used for retrieving file
1428
742
contents more quickly than the revision tree, i.e. a workingtree.
1429
743
The revision tree will be used for cases where accelerator_tree's
1487
786
reconciler.reconcile()
1488
787
return reconciler
1490
def reference_parent(self, file_id, path, possible_transports=None):
789
def reference_parent(self, file_id, path):
1491
790
"""Return the parent branch for a tree-reference file_id
1493
791
:param file_id: The file_id of the tree reference
1494
792
:param path: The path of the file_id in the tree
1495
793
:return: A branch associated with the file_id
1497
795
# FIXME should provide multiple branches, based on config
1498
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1499
possible_transports=possible_transports)
796
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1501
798
def supports_tags(self):
1502
799
return self._format.supports_tags()
1504
def automatic_tag_name(self, revision_id):
1505
"""Try to automatically find the tag name for a revision.
1507
:param revision_id: Revision id of the revision.
1508
:return: A tag name or None if no tag name could be determined.
1510
for hook in Branch.hooks['automatic_tag_name']:
1511
ret = hook(self, revision_id)
1516
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1518
"""Ensure that revision_b is a descendant of revision_a.
1520
This is a helper function for update_revisions.
1522
:raises: DivergedBranches if revision_b has diverged from revision_a.
1523
:returns: True if revision_b is a descendant of revision_a.
1525
relation = self._revision_relations(revision_a, revision_b, graph)
1526
if relation == 'b_descends_from_a':
1528
elif relation == 'diverged':
1529
raise errors.DivergedBranches(self, other_branch)
1530
elif relation == 'a_descends_from_b':
1533
raise AssertionError("invalid relation: %r" % (relation,))
1535
def _revision_relations(self, revision_a, revision_b, graph):
1536
"""Determine the relationship between two revisions.
1538
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1540
heads = graph.heads([revision_a, revision_b])
1541
if heads == set([revision_b]):
1542
return 'b_descends_from_a'
1543
elif heads == set([revision_a, revision_b]):
1544
# These branches have diverged
1546
elif heads == set([revision_a]):
1547
return 'a_descends_from_b'
1549
raise AssertionError("invalid heads: %r" % (heads,))
1551
def heads_to_fetch(self):
1552
"""Return the heads that must and that should be fetched to copy this
1553
branch into another repo.
1555
:returns: a 2-tuple of (must_fetch, if_present_fetch). must_fetch is a
1556
set of heads that must be fetched. if_present_fetch is a set of
1557
heads that must be fetched if present, but no error is necessary if
1558
they are not present.
1560
# For bzr native formats must_fetch is just the tip, and
1561
# if_present_fetch are the tags.
1562
must_fetch = set([self.last_revision()])
1563
if_present_fetch = set()
1564
if self.get_config_stack().get('branch.fetch_tags'):
1566
if_present_fetch = set(self.tags.get_reverse_tag_dict())
1567
except errors.TagsNotSupported:
1569
must_fetch.discard(_mod_revision.NULL_REVISION)
1570
if_present_fetch.discard(_mod_revision.NULL_REVISION)
1571
return must_fetch, if_present_fetch
1574
class BranchFormat(controldir.ControlComponentFormat):
802
class BranchFormat(object):
1575
803
"""An encapsulation of the initialization and open routines for a format.
1577
805
Formats provide three things:
1578
806
* An initialization routine,
1579
* a format description
1580
808
* an open routine.
1582
Formats are placed in an dict by their format string for reference
1583
during branch opening. It's not required that these be instances, they
1584
can be classes themselves with class methods - it simply depends on
810
Formats are placed in an dict by their format string for reference
811
during branch opening. Its not required that these be instances, they
812
can be classes themselves with class methods - it simply depends on
1585
813
whether state is needed for a given format or not.
1587
815
Once a format is deprecated, just deprecate the initialize and open
1588
methods on the format class. Do not deprecate the object, as the
816
methods on the format class. Do not deprecate the object, as the
1589
817
object will be created every time regardless.
820
_default_format = None
821
"""The default format used for new branches."""
824
"""The known formats."""
1592
826
def __eq__(self, other):
1593
827
return self.__class__ is other.__class__
1595
829
def __ne__(self, other):
1596
830
return not (self == other)
1598
def get_reference(self, controldir, name=None):
1599
"""Get the target reference of the branch in controldir.
833
def find_format(klass, a_bzrdir):
834
"""Return the format for the branch object in a_bzrdir."""
836
transport = a_bzrdir.get_branch_transport(None)
837
format_string = transport.get("format").read()
838
return klass._formats[format_string]
839
except errors.NoSuchFile:
840
raise errors.NotBranchError(path=transport.base)
842
raise errors.UnknownFormatError(format=format_string, kind='branch')
845
def get_default_format(klass):
846
"""Return the current default format."""
847
return klass._default_format
849
def get_reference(self, a_bzrdir):
850
"""Get the target reference of the branch in a_bzrdir.
1601
852
format probing must have been completed before calling
1602
853
this method - it is assumed that the format of the branch
1603
in controldir is correct.
854
in a_bzrdir is correct.
1605
:param controldir: The controldir to get the branch data from.
1606
:param name: Name of the colocated branch to fetch
856
:param a_bzrdir: The bzrdir to get the branch data from.
1607
857
:return: None if the branch is not a reference branch.
1612
def set_reference(self, controldir, name, to_branch):
1613
"""Set the target reference of the branch in controldir.
862
def set_reference(self, a_bzrdir, to_branch):
863
"""Set the target reference of the branch in a_bzrdir.
1615
865
format probing must have been completed before calling
1616
866
this method - it is assumed that the format of the branch
1617
in controldir is correct.
867
in a_bzrdir is correct.
1619
:param controldir: The controldir to set the branch reference for.
1620
:param name: Name of colocated branch to set, None for default
869
:param a_bzrdir: The bzrdir to set the branch reference for.
1621
870
:param to_branch: branch that the checkout is to reference
1623
872
raise NotImplementedError(self.set_reference)
874
def get_format_string(self):
875
"""Return the ASCII format string that identifies this format."""
876
raise NotImplementedError(self.get_format_string)
1625
878
def get_format_description(self):
1626
879
"""Return the short format description for this format."""
1627
880
raise NotImplementedError(self.get_format_description)
1629
def _run_post_branch_init_hooks(self, controldir, name, branch):
1630
hooks = Branch.hooks['post_branch_init']
1633
params = BranchInitHookParams(self, controldir, name, branch)
1637
def initialize(self, controldir, name=None, repository=None,
1638
append_revisions_only=None):
1639
"""Create a branch of this format in controldir.
1641
:param name: Name of the colocated branch to create.
882
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
884
"""Initialize a branch in a bzrdir, with specified files
886
:param a_bzrdir: The bzrdir to initialize the branch in
887
:param utf8_files: The files to create as a list of
888
(filename, content) tuples
889
:param set_format: If True, set the format with
890
self.get_format_string. (BzrBranch4 has its format set
892
:return: a branch in this format
894
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
895
branch_transport = a_bzrdir.get_branch_transport(self)
897
'metadir': ('lock', lockdir.LockDir),
898
'branch4': ('branch-lock', lockable_files.TransportLock),
900
lock_name, lock_class = lock_map[lock_type]
901
control_files = lockable_files.LockableFiles(branch_transport,
902
lock_name, lock_class)
903
control_files.create_lock()
904
control_files.lock_write()
906
control_files.put_utf8('format', self.get_format_string())
908
for file, content in utf8_files:
909
control_files.put_utf8(file, content)
911
control_files.unlock()
912
return self.open(a_bzrdir, _found=True)
914
def initialize(self, a_bzrdir):
915
"""Create a branch of this format in a_bzrdir."""
1643
916
raise NotImplementedError(self.initialize)
1645
918
def is_supported(self):
1646
919
"""Is this format supported?
1648
921
Supported formats can be initialized and opened.
1649
Unsupported formats may not support initialization or committing or
922
Unsupported formats may not support initialization or committing or
1650
923
some other features depending on the reason for not being supported.
1654
def make_tags(self, branch):
1655
"""Create a tags object for branch.
1657
This method is on BranchFormat, because BranchFormats are reflected
1658
over the wire via network_name(), whereas full Branch instances require
1659
multiple VFS method calls to operate at all.
1661
The default implementation returns a disabled-tags instance.
1663
Note that it is normal for branch to be a RemoteBranch when using tags
1666
return _mod_tag.DisabledTags(branch)
1668
def network_name(self):
1669
"""A simple byte string uniquely identifying this format for RPC calls.
1671
MetaDir branch formats use their disk format string to identify the
1672
repository over the wire. All in one formats such as bzr < 0.8, and
1673
foreign formats like svn/git and hg should use some marker which is
1674
unique and immutable.
1676
raise NotImplementedError(self.network_name)
1678
def open(self, controldir, name=None, _found=False, ignore_fallbacks=False,
1679
found_repository=None, possible_transports=None):
1680
"""Return the branch object for controldir.
1682
:param controldir: A ControlDir that contains a branch.
1683
:param name: Name of colocated branch to open
1684
:param _found: a private parameter, do not use it. It is used to
1685
indicate if format probing has already be done.
1686
:param ignore_fallbacks: when set, no fallback branches will be opened
1687
(if there are any). Default is to open fallbacks.
927
def open(self, a_bzrdir, _found=False):
928
"""Return the branch object for a_bzrdir
930
_found is a private parameter, do not use it. It is used to indicate
931
if format probing has already be done.
1689
933
raise NotImplementedError(self.open)
1691
def supports_set_append_revisions_only(self):
1692
"""True if this format supports set_append_revisions_only."""
1695
def supports_stacking(self):
1696
"""True if this format records a stacked-on branch."""
1699
def supports_leaving_lock(self):
1700
"""True if this format supports leaving locks in place."""
1701
return False # by default
936
def register_format(klass, format):
937
klass._formats[format.get_format_string()] = format
940
def set_default_format(klass, format):
941
klass._default_format = format
944
def unregister_format(klass, format):
945
del klass._formats[format.get_format_string()]
1703
947
def __str__(self):
1704
return self.get_format_description().rstrip()
948
return self.get_format_string().rstrip()
1706
950
def supports_tags(self):
1707
951
"""True if this format supports tags stored in the branch"""
1708
952
return False # by default
1710
def tags_are_versioned(self):
1711
"""Whether the tag container for this branch versions tags."""
1714
def supports_tags_referencing_ghosts(self):
1715
"""True if tags can reference ghost revisions."""
1719
class MetaDirBranchFormatFactory(registry._LazyObjectGetter):
1720
"""A factory for a BranchFormat object, permitting simple lazy registration.
1722
While none of the built in BranchFormats are lazy registered yet,
1723
bzrlib.tests.test_branch.TestMetaDirBranchFormatFactory demonstrates how to
1724
use it, and the bzr-loom plugin uses it as well (see
1725
bzrlib.plugins.loom.formats).
1728
def __init__(self, format_string, module_name, member_name):
1729
"""Create a MetaDirBranchFormatFactory.
1731
:param format_string: The format string the format has.
1732
:param module_name: Module to load the format class from.
1733
:param member_name: Attribute name within the module for the format class.
1735
registry._LazyObjectGetter.__init__(self, module_name, member_name)
1736
self._format_string = format_string
1738
def get_format_string(self):
1739
"""See BranchFormat.get_format_string."""
1740
return self._format_string
1743
"""Used for network_format_registry support."""
1744
return self.get_obj()()
954
# XXX: Probably doesn't really belong here -- mbp 20070212
955
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
957
branch_transport = a_bzrdir.get_branch_transport(self)
958
control_files = lockable_files.LockableFiles(branch_transport,
959
lock_filename, lock_class)
960
control_files.create_lock()
961
control_files.lock_write()
963
for filename, content in utf8_files:
964
control_files.put_utf8(filename, content)
966
control_files.unlock()
1747
969
class BranchHooks(Hooks):
1748
970
"""A dictionary mapping hook name to a list of callables for branch hooks.
1750
e.g. ['post_push'] Is the list of items to be called when the
1751
push function is invoked.
972
e.g. ['set_rh'] Is the list of items to be called when the
973
set_revision_history function is invoked.
1754
976
def __init__(self):
1757
979
These are all empty initially, because by default nothing should get
1760
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1761
self.add_hook('open',
1762
"Called with the Branch object that has been opened after a "
1763
"branch is opened.", (1, 8))
1764
self.add_hook('post_push',
1765
"Called after a push operation completes. post_push is called "
1766
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1767
"bzr client.", (0, 15))
1768
self.add_hook('post_pull',
1769
"Called after a pull operation completes. post_pull is called "
1770
"with a bzrlib.branch.PullResult object and only runs in the "
1771
"bzr client.", (0, 15))
1772
self.add_hook('pre_commit',
1773
"Called after a commit is calculated but before it is "
1774
"completed. pre_commit is called with (local, master, old_revno, "
1775
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1776
"). old_revid is NULL_REVISION for the first commit to a branch, "
1777
"tree_delta is a TreeDelta object describing changes from the "
1778
"basis revision. hooks MUST NOT modify this delta. "
1779
" future_tree is an in-memory tree obtained from "
1780
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1782
self.add_hook('post_commit',
1783
"Called in the bzr client after a commit has completed. "
1784
"post_commit is called with (local, master, old_revno, old_revid, "
1785
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1786
"commit to a branch.", (0, 15))
1787
self.add_hook('post_uncommit',
1788
"Called in the bzr client after an uncommit completes. "
1789
"post_uncommit is called with (local, master, old_revno, "
1790
"old_revid, new_revno, new_revid) where local is the local branch "
1791
"or None, master is the target branch, and an empty branch "
1792
"receives new_revno of 0, new_revid of None.", (0, 15))
1793
self.add_hook('pre_change_branch_tip',
1794
"Called in bzr client and server before a change to the tip of a "
1795
"branch is made. pre_change_branch_tip is called with a "
1796
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1797
"commit, uncommit will all trigger this hook.", (1, 6))
1798
self.add_hook('post_change_branch_tip',
1799
"Called in bzr client and server after a change to the tip of a "
1800
"branch is made. post_change_branch_tip is called with a "
1801
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1802
"commit, uncommit will all trigger this hook.", (1, 4))
1803
self.add_hook('transform_fallback_location',
1804
"Called when a stacked branch is activating its fallback "
1805
"locations. transform_fallback_location is called with (branch, "
1806
"url), and should return a new url. Returning the same url "
1807
"allows it to be used as-is, returning a different one can be "
1808
"used to cause the branch to stack on a closer copy of that "
1809
"fallback_location. Note that the branch cannot have history "
1810
"accessing methods called on it during this hook because the "
1811
"fallback locations have not been activated. When there are "
1812
"multiple hooks installed for transform_fallback_location, "
1813
"all are called with the url returned from the previous hook."
1814
"The order is however undefined.", (1, 9))
1815
self.add_hook('automatic_tag_name',
1816
"Called to determine an automatic tag name for a revision. "
1817
"automatic_tag_name is called with (branch, revision_id) and "
1818
"should return a tag name or None if no tag name could be "
1819
"determined. The first non-None tag name returned will be used.",
1821
self.add_hook('post_branch_init',
1822
"Called after new branch initialization completes. "
1823
"post_branch_init is called with a "
1824
"bzrlib.branch.BranchInitHookParams. "
1825
"Note that init, branch and checkout (both heavyweight and "
1826
"lightweight) will all trigger this hook.", (2, 2))
1827
self.add_hook('post_switch',
1828
"Called after a checkout switches branch. "
1829
"post_switch is called with a "
1830
"bzrlib.branch.SwitchHookParams.", (2, 2))
983
# Introduced in 0.15:
984
# invoked whenever the revision history has been set
985
# with set_revision_history. The api signature is
986
# (branch, revision_history), and the branch will
989
# invoked after a push operation completes.
990
# the api signature is
992
# containing the members
993
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
994
# where local is the local target branch or None, master is the target
995
# master branch, and the rest should be self explanatory. The source
996
# is read locked and the target branches write locked. Source will
997
# be the local low-latency branch.
998
self['post_push'] = []
999
# invoked after a pull operation completes.
1000
# the api signature is
1002
# containing the members
1003
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1004
# where local is the local branch or None, master is the target
1005
# master branch, and the rest should be self explanatory. The source
1006
# is read locked and the target branches write locked. The local
1007
# branch is the low-latency branch.
1008
self['post_pull'] = []
1009
# invoked before a commit operation takes place.
1010
# the api signature is
1011
# (local, master, old_revno, old_revid, future_revno, future_revid,
1012
# tree_delta, future_tree).
1013
# old_revid is NULL_REVISION for the first commit to a branch
1014
# tree_delta is a TreeDelta object describing changes from the basis
1015
# revision, hooks MUST NOT modify this delta
1016
# future_tree is an in-memory tree obtained from
1017
# CommitBuilder.revision_tree() and hooks MUST NOT modify this tree
1018
self['pre_commit'] = []
1019
# invoked after a commit operation completes.
1020
# the api signature is
1021
# (local, master, old_revno, old_revid, new_revno, new_revid)
1022
# old_revid is NULL_REVISION for the first commit to a branch.
1023
self['post_commit'] = []
1024
# invoked after a uncommit operation completes.
1025
# the api signature is
1026
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1027
# local is the local branch or None, master is the target branch,
1028
# and an empty branch recieves new_revno of 0, new_revid of None.
1029
self['post_uncommit'] = []
1031
# Invoked after the tip of a branch changes.
1032
# the api signature is
1033
# (params) where params is a ChangeBranchTipParams with the members
1034
# (branch, old_revno, new_revno, old_revid, new_revid)
1035
self['post_change_branch_tip'] = []
1834
1038
# install the default hooks into the Branch class.
1864
1068
self.old_revid = old_revid
1865
1069
self.new_revid = new_revid
1867
def __eq__(self, other):
1868
return self.__dict__ == other.__dict__
1871
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1872
self.__class__.__name__, self.branch,
1873
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1876
class BranchInitHookParams(object):
1877
"""Object holding parameters passed to `*_branch_init` hooks.
1879
There are 4 fields that hooks may wish to access:
1881
:ivar format: the branch format
1882
:ivar bzrdir: the ControlDir where the branch will be/has been initialized
1883
:ivar name: name of colocated branch, if any (or None)
1884
:ivar branch: the branch created
1886
Note that for lightweight checkouts, the bzrdir and format fields refer to
1887
the checkout, hence they are different from the corresponding fields in
1888
branch, which refer to the original branch.
1891
def __init__(self, format, controldir, name, branch):
1892
"""Create a group of BranchInitHook parameters.
1894
:param format: the branch format
1895
:param controldir: the ControlDir where the branch will be/has been
1897
:param name: name of colocated branch, if any (or None)
1898
:param branch: the branch created
1900
Note that for lightweight checkouts, the bzrdir and format fields refer
1901
to the checkout, hence they are different from the corresponding fields
1902
in branch, which refer to the original branch.
1904
self.format = format
1905
self.bzrdir = controldir
1907
self.branch = branch
1909
def __eq__(self, other):
1910
return self.__dict__ == other.__dict__
1913
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1916
class SwitchHookParams(object):
1917
"""Object holding parameters passed to `*_switch` hooks.
1919
There are 4 fields that hooks may wish to access:
1921
:ivar control_dir: ControlDir of the checkout to change
1922
:ivar to_branch: branch that the checkout is to reference
1923
:ivar force: skip the check for local commits in a heavy checkout
1924
:ivar revision_id: revision ID to switch to (or None)
1927
def __init__(self, control_dir, to_branch, force, revision_id):
1928
"""Create a group of SwitchHook parameters.
1930
:param control_dir: ControlDir of the checkout to change
1931
:param to_branch: branch that the checkout is to reference
1932
:param force: skip the check for local commits in a heavy checkout
1933
:param revision_id: revision ID to switch to (or None)
1935
self.control_dir = control_dir
1936
self.to_branch = to_branch
1938
self.revision_id = revision_id
1940
def __eq__(self, other):
1941
return self.__dict__ == other.__dict__
1944
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1945
self.control_dir, self.to_branch,
1949
class BranchFormatMetadir(bzrdir.BzrFormat, BranchFormat):
1950
"""Base class for branch formats that live in meta directories.
1954
BranchFormat.__init__(self)
1955
bzrdir.BzrFormat.__init__(self)
1958
def find_format(klass, controldir, name=None):
1959
"""Return the format for the branch object in controldir."""
1961
transport = controldir.get_branch_transport(None, name=name)
1962
except errors.NoSuchFile:
1963
raise errors.NotBranchError(path=name, bzrdir=controldir)
1965
format_string = transport.get_bytes("format")
1966
except errors.NoSuchFile:
1967
raise errors.NotBranchError(path=transport.base, bzrdir=controldir)
1968
return klass._find_format(format_registry, 'branch', format_string)
1970
def _branch_class(self):
1971
"""What class to instantiate on open calls."""
1972
raise NotImplementedError(self._branch_class)
1974
def _get_initial_config(self, append_revisions_only=None):
1975
if append_revisions_only:
1976
return "append_revisions_only = True\n"
1978
# Avoid writing anything if append_revisions_only is disabled,
1979
# as that is the default.
1982
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1984
"""Initialize a branch in a control dir, with specified files
1986
:param a_bzrdir: The bzrdir to initialize the branch in
1987
:param utf8_files: The files to create as a list of
1988
(filename, content) tuples
1989
:param name: Name of colocated branch to create, if any
1990
:return: a branch in this format
1993
name = a_bzrdir._get_selected_branch()
1994
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1995
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1996
control_files = lockable_files.LockableFiles(branch_transport,
1997
'lock', lockdir.LockDir)
1998
control_files.create_lock()
1999
control_files.lock_write()
2001
utf8_files += [('format', self.as_string())]
2002
for (filename, content) in utf8_files:
2003
branch_transport.put_bytes(
2005
mode=a_bzrdir._get_file_mode())
2007
control_files.unlock()
2008
branch = self.open(a_bzrdir, name, _found=True,
2009
found_repository=repository)
2010
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
2013
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False,
2014
found_repository=None, possible_transports=None):
2015
"""See BranchFormat.open()."""
2017
name = a_bzrdir._get_selected_branch()
2019
format = BranchFormatMetadir.find_format(a_bzrdir, name=name)
1072
class BzrBranchFormat4(BranchFormat):
1073
"""Bzr branch format 4.
1076
- a revision-history file.
1077
- a branch-lock lock file [ to be shared with the bzrdir ]
1080
def get_format_description(self):
1081
"""See BranchFormat.get_format_description()."""
1082
return "Branch format 4"
1084
def initialize(self, a_bzrdir):
1085
"""Create a branch of this format in a_bzrdir."""
1086
utf8_files = [('revision-history', ''),
1087
('branch-name', ''),
1089
return self._initialize_helper(a_bzrdir, utf8_files,
1090
lock_type='branch4', set_format=False)
1093
super(BzrBranchFormat4, self).__init__()
1094
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1096
def open(self, a_bzrdir, _found=False):
1097
"""Return the branch object for a_bzrdir
1099
_found is a private parameter, do not use it. It is used to indicate
1100
if format probing has already be done.
1103
# we are being called directly and must probe.
1104
raise NotImplementedError
1105
return BzrBranch(_format=self,
1106
_control_files=a_bzrdir._control_files,
1108
_repository=a_bzrdir.open_repository())
1111
return "Bazaar-NG branch format 4"
1114
class BzrBranchFormat5(BranchFormat):
1115
"""Bzr branch format 5.
1118
- a revision-history file.
1120
- a lock dir guarding the branch itself
1121
- all of this stored in a branch/ subdirectory
1122
- works with shared repositories.
1124
This format is new in bzr 0.8.
1127
def get_format_string(self):
1128
"""See BranchFormat.get_format_string()."""
1129
return "Bazaar-NG branch format 5\n"
1131
def get_format_description(self):
1132
"""See BranchFormat.get_format_description()."""
1133
return "Branch format 5"
1135
def initialize(self, a_bzrdir):
1136
"""Create a branch of this format in a_bzrdir."""
1137
utf8_files = [('revision-history', ''),
1138
('branch-name', ''),
1140
return self._initialize_helper(a_bzrdir, utf8_files)
1143
super(BzrBranchFormat5, self).__init__()
1144
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1146
def open(self, a_bzrdir, _found=False):
1147
"""Return the branch object for a_bzrdir
1149
_found is a private parameter, do not use it. It is used to indicate
1150
if format probing has already be done.
1153
format = BranchFormat.find_format(a_bzrdir)
2020
1154
if format.__class__ != self.__class__:
2021
1155
raise AssertionError("wrong format %r found for %r" %
2022
1156
(format, self))
2023
transport = a_bzrdir.get_branch_transport(None, name=name)
1158
transport = a_bzrdir.get_branch_transport(None)
2025
1159
control_files = lockable_files.LockableFiles(transport, 'lock',
2026
1160
lockdir.LockDir)
2027
if found_repository is None:
2028
found_repository = a_bzrdir.find_repository()
2029
return self._branch_class()(_format=self,
1161
return BzrBranch5(_format=self,
2030
1162
_control_files=control_files,
2032
1163
a_bzrdir=a_bzrdir,
2033
_repository=found_repository,
2034
ignore_fallbacks=ignore_fallbacks,
2035
possible_transports=possible_transports)
1164
_repository=a_bzrdir.find_repository())
2036
1165
except errors.NoSuchFile:
2037
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
2040
def _matchingbzrdir(self):
2041
ret = bzrdir.BzrDirMetaFormat1()
2042
ret.set_branch_format(self)
2045
def supports_tags(self):
2048
def supports_leaving_lock(self):
2051
def check_support_status(self, allow_unsupported, recommend_upgrade=True,
2053
BranchFormat.check_support_status(self,
2054
allow_unsupported=allow_unsupported, recommend_upgrade=recommend_upgrade,
2056
bzrdir.BzrFormat.check_support_status(self, allow_unsupported=allow_unsupported,
2057
recommend_upgrade=recommend_upgrade, basedir=basedir)
2060
class BzrBranchFormat6(BranchFormatMetadir):
1166
raise errors.NotBranchError(path=transport.base)
1169
class BzrBranchFormat6(BzrBranchFormat5):
2061
1170
"""Branch format with last-revision and tags.
2063
1172
Unlike previous formats, this has no explicit revision history. Instead,
2080
1185
"""See BranchFormat.get_format_description()."""
2081
1186
return "Branch format 6"
2083
def initialize(self, a_bzrdir, name=None, repository=None,
2084
append_revisions_only=None):
2085
"""Create a branch of this format in a_bzrdir."""
2086
utf8_files = [('last-revision', '0 null:\n'),
2088
self._get_initial_config(append_revisions_only)),
2091
return self._initialize_helper(a_bzrdir, utf8_files, name, repository)
2093
def make_tags(self, branch):
2094
"""See bzrlib.branch.BranchFormat.make_tags()."""
2095
return _mod_tag.BasicTags(branch)
2097
def supports_set_append_revisions_only(self):
2101
class BzrBranchFormat8(BranchFormatMetadir):
2102
"""Metadir format supporting storing locations of subtree branches."""
2104
def _branch_class(self):
2108
def get_format_string(cls):
2109
"""See BranchFormat.get_format_string()."""
2110
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2112
def get_format_description(self):
2113
"""See BranchFormat.get_format_description()."""
2114
return "Branch format 8"
2116
def initialize(self, a_bzrdir, name=None, repository=None,
2117
append_revisions_only=None):
2118
"""Create a branch of this format in a_bzrdir."""
2119
utf8_files = [('last-revision', '0 null:\n'),
2121
self._get_initial_config(append_revisions_only)),
2125
return self._initialize_helper(a_bzrdir, utf8_files, name, repository)
2127
def make_tags(self, branch):
2128
"""See bzrlib.branch.BranchFormat.make_tags()."""
2129
return _mod_tag.BasicTags(branch)
2131
def supports_set_append_revisions_only(self):
2134
def supports_stacking(self):
2137
supports_reference_locations = True
2140
class BzrBranchFormat7(BranchFormatMetadir):
2141
"""Branch format with last-revision, tags, and a stacked location pointer.
2143
The stacked location pointer is passed down to the repository and requires
2144
a repository format with supports_external_lookups = True.
2146
This format was introduced in bzr 1.6.
2149
def initialize(self, a_bzrdir, name=None, repository=None,
2150
append_revisions_only=None):
2151
"""Create a branch of this format in a_bzrdir."""
2152
utf8_files = [('last-revision', '0 null:\n'),
2154
self._get_initial_config(append_revisions_only)),
2157
return self._initialize_helper(a_bzrdir, utf8_files, name, repository)
2159
def _branch_class(self):
2163
def get_format_string(cls):
2164
"""See BranchFormat.get_format_string()."""
2165
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2167
def get_format_description(self):
2168
"""See BranchFormat.get_format_description()."""
2169
return "Branch format 7"
2171
def supports_set_append_revisions_only(self):
2174
def supports_stacking(self):
2177
def make_tags(self, branch):
2178
"""See bzrlib.branch.BranchFormat.make_tags()."""
2179
return _mod_tag.BasicTags(branch)
2181
supports_reference_locations = False
2184
class BranchReferenceFormat(BranchFormatMetadir):
1188
def initialize(self, a_bzrdir):
1189
"""Create a branch of this format in a_bzrdir."""
1190
utf8_files = [('last-revision', '0 null:\n'),
1191
('branch.conf', ''),
1194
return self._initialize_helper(a_bzrdir, utf8_files)
1196
def open(self, a_bzrdir, _found=False):
1197
"""Return the branch object for a_bzrdir
1199
_found is a private parameter, do not use it. It is used to indicate
1200
if format probing has already be done.
1203
format = BranchFormat.find_format(a_bzrdir)
1204
if format.__class__ != self.__class__:
1205
raise AssertionError("wrong format %r found for %r" %
1207
transport = a_bzrdir.get_branch_transport(None)
1208
control_files = lockable_files.LockableFiles(transport, 'lock',
1210
return BzrBranch6(_format=self,
1211
_control_files=control_files,
1213
_repository=a_bzrdir.find_repository())
1215
def supports_tags(self):
1219
class BranchReferenceFormat(BranchFormat):
2185
1220
"""Bzr branch reference format.
2187
1222
Branch references are used in implementing checkouts, they
2201
1235
"""See BranchFormat.get_format_description()."""
2202
1236
return "Checkout reference format 1"
2204
def get_reference(self, a_bzrdir, name=None):
1238
def get_reference(self, a_bzrdir):
2205
1239
"""See BranchFormat.get_reference()."""
2206
transport = a_bzrdir.get_branch_transport(None, name=name)
2207
return transport.get_bytes('location')
1240
transport = a_bzrdir.get_branch_transport(None)
1241
return transport.get('location').read()
2209
def set_reference(self, a_bzrdir, name, to_branch):
1243
def set_reference(self, a_bzrdir, to_branch):
2210
1244
"""See BranchFormat.set_reference()."""
2211
transport = a_bzrdir.get_branch_transport(None, name=name)
1245
transport = a_bzrdir.get_branch_transport(None)
2212
1246
location = transport.put_bytes('location', to_branch.base)
2214
def initialize(self, a_bzrdir, name=None, target_branch=None,
2215
repository=None, append_revisions_only=None):
1248
def initialize(self, a_bzrdir, target_branch=None):
2216
1249
"""Create a branch of this format in a_bzrdir."""
2217
1250
if target_branch is None:
2218
1251
# this format does not implement branch itself, thus the implicit
2219
1252
# creation contract must see it as uninitializable
2220
1253
raise errors.UninitializableFormat(self)
2221
mutter('creating branch reference in %s', a_bzrdir.user_url)
2222
if a_bzrdir._format.fixed_components:
2223
raise errors.IncompatibleFormat(self, a_bzrdir._format)
2225
name = a_bzrdir._get_selected_branch()
2226
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1254
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1255
branch_transport = a_bzrdir.get_branch_transport(self)
2227
1256
branch_transport.put_bytes('location',
2228
target_branch.user_url)
2229
branch_transport.put_bytes('format', self.as_string())
2230
branch = self.open(a_bzrdir, name, _found=True,
1257
target_branch.bzrdir.root_transport.base)
1258
branch_transport.put_bytes('format', self.get_format_string())
1260
a_bzrdir, _found=True,
2231
1261
possible_transports=[target_branch.bzrdir.root_transport])
2232
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1264
super(BranchReferenceFormat, self).__init__()
1265
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2235
1267
def _make_reference_clone_function(format, a_branch):
2236
1268
"""Create a clone() routine for a branch dynamically."""
2237
def clone(to_bzrdir, revision_id=None,
2238
repository_policy=None):
1269
def clone(to_bzrdir, revision_id=None):
2239
1270
"""See Branch.clone()."""
2240
return format.initialize(to_bzrdir, target_branch=a_branch)
1271
return format.initialize(to_bzrdir, a_branch)
2241
1272
# cannot obey revision_id limits when cloning a reference ...
2242
1273
# FIXME RBC 20060210 either nuke revision_id for clone, or
2243
1274
# emit some sort of warning/error to the caller ?!
2246
def open(self, a_bzrdir, name=None, _found=False, location=None,
2247
possible_transports=None, ignore_fallbacks=False,
2248
found_repository=None):
1277
def open(self, a_bzrdir, _found=False, location=None,
1278
possible_transports=None):
2249
1279
"""Return the branch that the branch reference in a_bzrdir points at.
2251
:param a_bzrdir: A BzrDir that contains a branch.
2252
:param name: Name of colocated branch to open, if any
2253
:param _found: a private parameter, do not use it. It is used to
2254
indicate if format probing has already be done.
2255
:param ignore_fallbacks: when set, no fallback branches will be opened
2256
(if there are any). Default is to open fallbacks.
2257
:param location: The location of the referenced branch. If
2258
unspecified, this will be determined from the branch reference in
2260
:param possible_transports: An optional reusable transports list.
1281
_found is a private parameter, do not use it. It is used to indicate
1282
if format probing has already be done.
2263
name = a_bzrdir._get_selected_branch()
2265
format = BranchFormatMetadir.find_format(a_bzrdir, name=name)
1285
format = BranchFormat.find_format(a_bzrdir)
2266
1286
if format.__class__ != self.__class__:
2267
1287
raise AssertionError("wrong format %r found for %r" %
2268
1288
(format, self))
2269
1289
if location is None:
2270
location = self.get_reference(a_bzrdir, name)
2271
real_bzrdir = controldir.ControlDir.open(
1290
location = self.get_reference(a_bzrdir)
1291
real_bzrdir = bzrdir.BzrDir.open(
2272
1292
location, possible_transports=possible_transports)
2273
result = real_bzrdir.open_branch(ignore_fallbacks=ignore_fallbacks,
2274
possible_transports=possible_transports)
1293
result = real_bzrdir.open_branch()
2275
1294
# this changes the behaviour of result.clone to create a new reference
2276
1295
# rather than a copy of the content of the branch.
2277
1296
# I did not use a proxy object because that needs much more extensive
2287
class BranchFormatRegistry(controldir.ControlComponentFormatRegistry):
2288
"""Branch format registry."""
2290
def __init__(self, other_registry=None):
2291
super(BranchFormatRegistry, self).__init__(other_registry)
2292
self._default_format = None
2294
def set_default(self, format):
2295
self._default_format = format
2297
def get_default(self):
2298
return self._default_format
2301
network_format_registry = registry.FormatRegistry()
2302
"""Registry of formats indexed by their network name.
2304
The network name for a branch format is an identifier that can be used when
2305
referring to formats with smart server operations. See
2306
BranchFormat.network_name() for more detail.
2309
format_registry = BranchFormatRegistry(network_format_registry)
2312
1306
# formats which have no format string are not discoverable
2313
1307
# and not independently creatable, so are not registered.
1308
__format5 = BzrBranchFormat5()
2314
1309
__format6 = BzrBranchFormat6()
2315
__format7 = BzrBranchFormat7()
2316
__format8 = BzrBranchFormat8()
2317
format_registry.register_lazy(
2318
"Bazaar-NG branch format 5\n", "bzrlib.branchfmt.fullhistory", "BzrBranchFormat5")
2319
format_registry.register(BranchReferenceFormat())
2320
format_registry.register(__format6)
2321
format_registry.register(__format7)
2322
format_registry.register(__format8)
2323
format_registry.set_default(__format7)
2326
class BranchWriteLockResult(LogicalLockResult):
2327
"""The result of write locking a branch.
2329
:ivar branch_token: The token obtained from the underlying branch lock, or
2331
:ivar unlock: A callable which will unlock the lock.
2334
def __init__(self, unlock, branch_token):
2335
LogicalLockResult.__init__(self, unlock)
2336
self.branch_token = branch_token
2339
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2343
class BzrBranch(Branch, _RelockDebugMixin):
1310
BranchFormat.register_format(__format5)
1311
BranchFormat.register_format(BranchReferenceFormat())
1312
BranchFormat.register_format(__format6)
1313
BranchFormat.set_default_format(__format6)
1314
_legacy_formats = [BzrBranchFormat4(),
1317
class BzrBranch(Branch):
2344
1318
"""A branch stored in the actual filesystem.
2346
1320
Note that it's "local" in the context of the filesystem; it doesn't
2347
1321
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2348
1322
it's writable, and can be accessed via the normal filesystem API.
2350
:ivar _transport: Transport for file operations on this branch's
2351
control files, typically pointing to the .bzr/branch directory.
2352
:ivar repository: Repository for this branch.
2353
:ivar base: The url of the base directory for this branch; the one
2354
containing the .bzr directory.
2355
:ivar name: Optional colocated branch name as it exists in the control
2359
1325
def __init__(self, _format=None,
2360
_control_files=None, a_bzrdir=None, name=None,
2361
_repository=None, ignore_fallbacks=False,
2362
possible_transports=None):
1326
_control_files=None, a_bzrdir=None, _repository=None):
2363
1327
"""Create new branch object at a particular location."""
1328
Branch.__init__(self)
2364
1329
if a_bzrdir is None:
2365
1330
raise ValueError('a_bzrdir must be supplied')
2367
raise ValueError('name must be supplied')
2368
self.bzrdir = a_bzrdir
2369
self._user_transport = self.bzrdir.transport.clone('..')
2371
self._user_transport.set_segment_parameter(
2372
"branch", urlutils.escape(name))
2373
self._base = self._user_transport.base
1332
self.bzrdir = a_bzrdir
1333
# self._transport used to point to the directory containing the
1334
# control directory, but was not used - now it's just the transport
1335
# for the branch control files. mbp 20070212
1336
self._base = self.bzrdir.transport.clone('..').base
2375
1337
self._format = _format
2376
1338
if _control_files is None:
2377
1339
raise ValueError('BzrBranch _control_files is None')
2378
1340
self.control_files = _control_files
2379
1341
self._transport = _control_files._transport
2380
1342
self.repository = _repository
2381
self.conf_store = None
2382
Branch.__init__(self, possible_transports)
2384
1344
def __str__(self):
2385
return '%s(%s)' % (self.__class__.__name__, self.user_url)
1345
return '%s(%r)' % (self.__class__.__name__, self.base)
2387
1347
__repr__ = __str__
2393
1353
base = property(_get_base, doc="The URL for the root of this branch.")
2396
def user_transport(self):
2397
return self._user_transport
2399
def _get_config(self):
2400
return _mod_config.TransportConfig(self._transport, 'branch.conf')
2402
def _get_config_store(self):
2403
if self.conf_store is None:
2404
self.conf_store = _mod_config.BranchStore(self)
2405
return self.conf_store
2407
def _uncommitted_branch(self):
2408
"""Return the branch that may contain uncommitted changes."""
2409
master = self.get_master_branch()
2410
if master is not None:
2415
def store_uncommitted(self, creator):
2416
"""Store uncommitted changes from a ShelfCreator.
2418
:param creator: The ShelfCreator containing uncommitted changes, or
2419
None to delete any stored changes.
2420
:raises: ChangesAlreadyStored if the branch already has changes.
2422
branch = self._uncommitted_branch()
2424
branch._transport.delete('stored-transform')
2426
if branch._transport.has('stored-transform'):
2427
raise errors.ChangesAlreadyStored
2428
transform = StringIO()
2429
creator.write_shelf(transform)
2431
branch._transport.put_file('stored-transform', transform)
2433
def get_unshelver(self, tree):
2434
"""Return a shelf.Unshelver for this branch and tree.
2436
:param tree: The tree to use to construct the Unshelver.
2437
:return: an Unshelver or None if no changes are stored.
2439
branch = self._uncommitted_branch()
2441
transform = branch._transport.get('stored-transform')
2442
except errors.NoSuchFile:
2444
return shelf.Unshelver.from_tree_and_shelf(tree, transform)
1355
def abspath(self, name):
1356
"""See Branch.abspath."""
1357
return self.control_files._transport.abspath(name)
2446
1359
def is_locked(self):
2447
1360
return self.control_files.is_locked()
2449
1362
def lock_write(self, token=None):
2450
"""Lock the branch for write operations.
2452
:param token: A token to permit reacquiring a previously held and
2454
:return: A BranchWriteLockResult.
2456
if not self.is_locked():
2457
self._note_lock('w')
2458
self.repository._warn_if_deprecated(self)
2459
self.repository.lock_write()
1363
repo_token = self.repository.lock_write()
2464
return BranchWriteLockResult(self.unlock,
2465
self.control_files.lock_write(token=token))
1365
token = self.control_files.lock_write(token=token)
2468
self.repository.unlock()
1367
self.repository.unlock()
2471
1371
def lock_read(self):
2472
"""Lock the branch for read operations.
2474
:return: A bzrlib.lock.LogicalLockResult.
2476
if not self.is_locked():
2477
self._note_lock('r')
2478
self.repository._warn_if_deprecated(self)
2479
self.repository.lock_read()
1372
self.repository.lock_read()
2484
1374
self.control_files.lock_read()
2485
return LogicalLockResult(self.unlock)
2488
self.repository.unlock()
1376
self.repository.unlock()
2491
@only_raises(errors.LockNotHeld, errors.LockBroken)
2492
1379
def unlock(self):
2493
if self.control_files._lock_count == 1 and self.conf_store is not None:
2494
self.conf_store.save_changes()
1380
# TODO: test for failed two phase locks. This is known broken.
2496
1382
self.control_files.unlock()
2498
if not self.control_files.is_locked():
2499
self.repository.unlock()
2500
# we just released the lock
2501
self._clear_cached_state()
1384
self.repository.unlock()
1385
if not self.control_files.is_locked():
1386
# we just released the lock
1387
self._clear_cached_state()
2503
1389
def peek_lock_mode(self):
2504
1390
if self.control_files._lock_count == 0:
2514
1400
"""See Branch.print_file."""
2515
1401
return self.repository.print_file(file, revision_id)
1403
def _write_revision_history(self, history):
1404
"""Factored out of set_revision_history.
1406
This performs the actual writing to disk.
1407
It is intended to be called by BzrBranch5.set_revision_history."""
1408
self.control_files.put_bytes(
1409
'revision-history', '\n'.join(history))
1412
def set_revision_history(self, rev_history):
1413
"""See Branch.set_revision_history."""
1414
if 'evil' in debug.debug_flags:
1415
mutter_callsite(3, "set_revision_history scales with history.")
1416
self._write_revision_history(rev_history)
1417
self._clear_cached_state()
1418
self._cache_revision_history(rev_history)
1419
for hook in Branch.hooks['set_rh']:
1420
hook(self, rev_history)
1422
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1423
"""Run the post_change_branch_tip hooks."""
1424
hooks = Branch.hooks['post_change_branch_tip']
1427
new_revno, new_revid = self.last_revision_info()
1428
params = ChangeBranchTipParams(
1429
self, old_revno, new_revno, old_revid, new_revid)
2517
1433
@needs_write_lock
2518
1434
def set_last_revision_info(self, revno, revision_id):
2519
if not revision_id or not isinstance(revision_id, basestring):
2520
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
1435
"""Set the last revision of this branch.
1437
The caller is responsible for checking that the revno is correct
1438
for this revision id.
1440
It may be possible to set the branch last revision to an id not
1441
present in the repository. However, branches can also be
1442
configured to check constraints on history, in which case this may not
2521
1445
revision_id = _mod_revision.ensure_null(revision_id)
2522
1446
old_revno, old_revid = self.last_revision_info()
2523
if self.get_append_revisions_only():
2524
self._check_history_violation(revision_id)
2525
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2526
self._write_last_revision_info(revno, revision_id)
2527
self._clear_cached_state()
2528
self._last_revision_info_cache = revno, revision_id
1447
# this old format stores the full history, but this api doesn't
1448
# provide it, so we must generate, and might as well check it's
1450
history = self._lefthand_history(revision_id)
1451
if len(history) != revno:
1452
raise AssertionError('%d != %d' % (len(history), revno))
1453
self.set_revision_history(history)
2529
1454
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
1456
def _gen_revision_history(self):
1457
history = self.control_files.get('revision-history').read().split('\n')
1458
if history[-1:] == ['']:
1459
# There shouldn't be a trailing newline, but just in case.
1463
def _lefthand_history(self, revision_id, last_rev=None,
1465
if 'evil' in debug.debug_flags:
1466
mutter_callsite(4, "_lefthand_history scales with history.")
1467
# stop_revision must be a descendant of last_revision
1468
graph = self.repository.get_graph()
1469
if last_rev is not None:
1470
if not graph.is_ancestor(last_rev, revision_id):
1471
# our previous tip is not merged into stop_revision
1472
raise errors.DivergedBranches(self, other_branch)
1473
# make a new revision history from the graph
1474
parents_map = graph.get_parent_map([revision_id])
1475
if revision_id not in parents_map:
1476
raise errors.NoSuchRevision(self, revision_id)
1477
current_rev_id = revision_id
1479
# Do not include ghosts or graph origin in revision_history
1480
while (current_rev_id in parents_map and
1481
len(parents_map[current_rev_id]) > 0):
1482
new_history.append(current_rev_id)
1483
current_rev_id = parents_map[current_rev_id][0]
1484
parents_map = graph.get_parent_map([current_rev_id])
1485
new_history.reverse()
1489
def generate_revision_history(self, revision_id, last_rev=None,
1491
"""Create a new revision history that will finish with revision_id.
1493
:param revision_id: the new tip to use.
1494
:param last_rev: The previous last_revision. If not None, then this
1495
must be a ancestory of revision_id, or DivergedBranches is raised.
1496
:param other_branch: The other branch that DivergedBranches should
1497
raise with respect to.
1499
self.set_revision_history(self._lefthand_history(revision_id,
1500
last_rev, other_branch))
1503
def update_revisions(self, other, stop_revision=None, overwrite=False):
1504
"""See Branch.update_revisions."""
1507
other_last_revno, other_last_revision = other.last_revision_info()
1508
if stop_revision is None:
1509
stop_revision = other_last_revision
1510
if _mod_revision.is_null(stop_revision):
1511
# if there are no commits, we're done.
1513
# whats the current last revision, before we fetch [and change it
1515
last_rev = _mod_revision.ensure_null(self.last_revision())
1516
# we fetch here so that we don't process data twice in the common
1517
# case of having something to pull, and so that the check for
1518
# already merged can operate on the just fetched graph, which will
1519
# be cached in memory.
1520
self.fetch(other, stop_revision)
1521
# Check to see if one is an ancestor of the other
1523
heads = self.repository.get_graph().heads([stop_revision,
1525
if heads == set([last_rev]):
1526
# The current revision is a decendent of the target,
1529
elif heads == set([stop_revision, last_rev]):
1530
# These branches have diverged
1531
raise errors.DivergedBranches(self, other)
1532
elif heads != set([stop_revision]):
1533
raise AssertionError("invalid heads: %r" % heads)
1534
if other_last_revision == stop_revision:
1535
self.set_last_revision_info(other_last_revno,
1536
other_last_revision)
1538
# TODO: jam 2007-11-29 Is there a way to determine the
1539
# revno without searching all of history??
1541
self.generate_revision_history(stop_revision)
1543
self.generate_revision_history(stop_revision,
1544
last_rev=last_rev, other_branch=other)
2531
1548
def basis_tree(self):
2532
1549
"""See Branch.basis_tree."""
2533
1550
return self.repository.revision_tree(self.last_revision())
1553
def pull(self, source, overwrite=False, stop_revision=None,
1554
_hook_master=None, run_hooks=True, possible_transports=None):
1557
:param _hook_master: Private parameter - set the branch to
1558
be supplied as the master to push hooks.
1559
:param run_hooks: Private parameter - if false, this branch
1560
is being called because it's the master of the primary branch,
1561
so it should not run its hooks.
1563
result = PullResult()
1564
result.source_branch = source
1565
result.target_branch = self
1568
result.old_revno, result.old_revid = self.last_revision_info()
1569
self.update_revisions(source, stop_revision, overwrite=overwrite)
1570
result.tag_conflicts = source.tags.merge_to(self.tags, overwrite)
1571
result.new_revno, result.new_revid = self.last_revision_info()
1573
result.master_branch = _hook_master
1574
result.local_branch = self
1576
result.master_branch = self
1577
result.local_branch = None
1579
for hook in Branch.hooks['post_pull']:
2535
1585
def _get_parent_location(self):
2536
1586
_locs = ['parent', 'pull', 'x-pull']
2537
1587
for l in _locs:
2539
return self._transport.get_bytes(l).strip('\n')
1589
return self.control_files.get(l).read().strip('\n')
2540
1590
except errors.NoSuchFile:
2544
def get_stacked_on_url(self):
2545
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1595
def push(self, target, overwrite=False, stop_revision=None,
1596
_override_hook_source_branch=None):
1599
This is the basic concrete implementation of push()
1601
:param _override_hook_source_branch: If specified, run
1602
the hooks passing this Branch as the source, rather than self.
1603
This is for use of RemoteBranch, where push is delegated to the
1604
underlying vfs-based Branch.
1606
# TODO: Public option to disable running hooks - should be trivial but
1610
result = self._push_with_bound_branches(target, overwrite,
1612
_override_hook_source_branch=_override_hook_source_branch)
1617
def _push_with_bound_branches(self, target, overwrite,
1619
_override_hook_source_branch=None):
1620
"""Push from self into target, and into target's master if any.
1622
This is on the base BzrBranch class even though it doesn't support
1623
bound branches because the *target* might be bound.
1626
if _override_hook_source_branch:
1627
result.source_branch = _override_hook_source_branch
1628
for hook in Branch.hooks['post_push']:
1631
bound_location = target.get_bound_location()
1632
if bound_location and target.base != bound_location:
1633
# there is a master branch.
1635
# XXX: Why the second check? Is it even supported for a branch to
1636
# be bound to itself? -- mbp 20070507
1637
master_branch = target.get_master_branch()
1638
master_branch.lock_write()
1640
# push into the master from this branch.
1641
self._basic_push(master_branch, overwrite, stop_revision)
1642
# and push into the target branch from this. Note that we push from
1643
# this branch again, because its considered the highest bandwidth
1645
result = self._basic_push(target, overwrite, stop_revision)
1646
result.master_branch = master_branch
1647
result.local_branch = target
1651
master_branch.unlock()
1654
result = self._basic_push(target, overwrite, stop_revision)
1655
# TODO: Why set master_branch and local_branch if there's no
1656
# binding? Maybe cleaner to just leave them unset? -- mbp
1658
result.master_branch = target
1659
result.local_branch = None
1663
def _basic_push(self, target, overwrite, stop_revision):
1664
"""Basic implementation of push without bound branches or hooks.
1666
Must be called with self read locked and target write locked.
1668
result = PushResult()
1669
result.source_branch = self
1670
result.target_branch = target
1671
result.old_revno, result.old_revid = target.last_revision_info()
1673
target.update_revisions(self, stop_revision)
1674
except errors.DivergedBranches:
1678
target.set_revision_history(self.revision_history())
1679
result.tag_conflicts = self.tags.merge_to(target.tags, overwrite)
1680
result.new_revno, result.new_revid = target.last_revision_info()
1683
def get_parent(self):
1684
"""See Branch.get_parent."""
1685
parent = self._get_parent_location()
1688
# This is an old-format absolute path to a local branch
1689
# turn it into a url
1690
if parent.startswith('/'):
1691
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1693
return urlutils.join(self.base[:-1], parent)
1694
except errors.InvalidURLJoin, e:
1695
raise errors.InaccessibleParent(parent, self.base)
2547
1697
def set_push_location(self, location):
2548
1698
"""See Branch.set_push_location."""
2550
1700
'push_location', location,
2551
1701
store=_mod_config.STORE_LOCATION_NORECURSE)
1704
def set_parent(self, url):
1705
"""See Branch.set_parent."""
1706
# TODO: Maybe delete old location files?
1707
# URLs should never be unicode, even on the local fs,
1708
# FIXUP this and get_parent in a future branch format bump:
1709
# read and rewrite the file. RBC 20060125
1711
if isinstance(url, unicode):
1713
url = url.encode('ascii')
1714
except UnicodeEncodeError:
1715
raise errors.InvalidURL(url,
1716
"Urls must be 7-bit ascii, "
1717
"use bzrlib.urlutils.escape")
1718
url = urlutils.relative_url(self.base, url)
1719
self._set_parent_location(url)
2553
1721
def _set_parent_location(self, url):
2554
1722
if url is None:
2555
self._transport.delete('parent')
2557
self._transport.put_bytes('parent', url + '\n',
2558
mode=self.bzrdir._get_file_mode())
2562
"""If bound, unbind"""
2563
return self.set_bound_location(None)
1723
self.control_files._transport.delete('parent')
1725
self.control_files.put_bytes('parent', url + '\n')
1728
class BzrBranch5(BzrBranch):
1729
"""A format 5 branch. This supports new features over plain branches.
1731
It has support for a master_branch which is the data for bound branches.
1739
super(BzrBranch5, self).__init__(_format=_format,
1740
_control_files=_control_files,
1742
_repository=_repository)
1745
def pull(self, source, overwrite=False, stop_revision=None,
1746
run_hooks=True, possible_transports=None):
1747
"""Pull from source into self, updating my master if any.
1749
:param run_hooks: Private parameter - if false, this branch
1750
is being called because it's the master of the primary branch,
1751
so it should not run its hooks.
1753
bound_location = self.get_bound_location()
1754
master_branch = None
1755
if bound_location and source.base != bound_location:
1756
# not pulling from master, so we need to update master.
1757
master_branch = self.get_master_branch(possible_transports)
1758
master_branch.lock_write()
1761
# pull from source into master.
1762
master_branch.pull(source, overwrite, stop_revision,
1764
return super(BzrBranch5, self).pull(source, overwrite,
1765
stop_revision, _hook_master=master_branch,
1766
run_hooks=run_hooks)
1769
master_branch.unlock()
1771
def get_bound_location(self):
1773
return self._transport.get_bytes('bound')[:-1]
1774
except errors.NoSuchFile:
1778
def get_master_branch(self, possible_transports=None):
1779
"""Return the branch we are bound to.
1781
:return: Either a Branch, or None
1783
This could memoise the branch, but if thats done
1784
it must be revalidated on each new lock.
1785
So for now we just don't memoise it.
1786
# RBC 20060304 review this decision.
1788
bound_loc = self.get_bound_location()
1792
return Branch.open(bound_loc,
1793
possible_transports=possible_transports)
1794
except (errors.NotBranchError, errors.ConnectionError), e:
1795
raise errors.BoundBranchConnectionFailure(
1799
def set_bound_location(self, location):
1800
"""Set the target where this branch is bound to.
1802
:param location: URL to the target branch
1805
self.control_files.put_utf8('bound', location+'\n')
1808
self.control_files._transport.delete('bound')
1809
except errors.NoSuchFile:
2565
1813
@needs_write_lock
2566
1814
def bind(self, other):
2663
1894
Use set_last_revision_info to perform this safely.
2665
1896
Does not update the revision_history cache.
1897
Intended to be called by set_last_revision_info and
1898
_write_revision_history.
2667
1900
revision_id = _mod_revision.ensure_null(revision_id)
2668
1901
out_string = '%d %s\n' % (revno, revision_id)
2669
self._transport.put_bytes('last-revision', out_string,
2670
mode=self.bzrdir._get_file_mode())
1902
self.control_files.put_bytes('last-revision', out_string)
2672
1904
@needs_write_lock
2673
def update_feature_flags(self, updated_flags):
2674
"""Update the feature flags for this branch.
2676
:param updated_flags: Dictionary mapping feature names to necessities
2677
A necessity can be None to indicate the feature should be removed
2679
self._format._update_feature_flags(updated_flags)
2680
self.control_transport.put_bytes('format', self._format.as_string())
2683
class BzrBranch8(BzrBranch):
2684
"""A branch that stores tree-reference locations."""
2686
def _open_hook(self, possible_transports=None):
2687
if self._ignore_fallbacks:
2689
if possible_transports is None:
2690
possible_transports = [self.bzrdir.root_transport]
2692
url = self.get_stacked_on_url()
2693
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2694
errors.UnstackableBranchFormat):
2697
for hook in Branch.hooks['transform_fallback_location']:
2698
url = hook(self, url)
2700
hook_name = Branch.hooks.get_hook_name(hook)
2701
raise AssertionError(
2702
"'transform_fallback_location' hook %s returned "
2703
"None, not a URL." % hook_name)
2704
self._activate_fallback_location(url,
2705
possible_transports=possible_transports)
2707
def __init__(self, *args, **kwargs):
2708
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2709
super(BzrBranch8, self).__init__(*args, **kwargs)
2710
self._last_revision_info_cache = None
2711
self._reference_info = None
2713
def _clear_cached_state(self):
2714
super(BzrBranch8, self)._clear_cached_state()
2715
self._last_revision_info_cache = None
2716
self._reference_info = None
1905
def set_last_revision_info(self, revno, revision_id):
1906
revision_id = _mod_revision.ensure_null(revision_id)
1907
old_revno, old_revid = self.last_revision_info()
1908
if self._get_append_revisions_only():
1909
self._check_history_violation(revision_id)
1910
self._write_last_revision_info(revno, revision_id)
1911
self._clear_cached_state()
1912
self._last_revision_info_cache = revno, revision_id
1913
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2718
1915
def _check_history_violation(self, revision_id):
2719
current_revid = self.last_revision()
2720
last_revision = _mod_revision.ensure_null(current_revid)
1916
last_revision = _mod_revision.ensure_null(self.last_revision())
2721
1917
if _mod_revision.is_null(last_revision):
2723
graph = self.repository.get_graph()
2724
for lh_ancestor in graph.iter_lefthand_ancestry(revision_id):
2725
if lh_ancestor == current_revid:
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1919
if last_revision not in self._lefthand_history(revision_id):
1920
raise errors.AppendRevisionsOnlyViolation(self.base)
2729
1922
def _gen_revision_history(self):
2730
1923
"""Generate the revision history from last revision
2732
last_revno, last_revision = self.last_revision_info()
2733
self._extend_partial_history(stop_index=last_revno-1)
1925
self._extend_partial_history()
2734
1926
return list(reversed(self._partial_revision_history_cache))
1928
def _extend_partial_history(self, stop_index=None, stop_revision=None):
1929
"""Extend the partial history to include a given index
1931
If a stop_index is supplied, stop when that index has been reached.
1932
If a stop_revision is supplied, stop when that revision is
1933
encountered. Otherwise, stop when the beginning of history is
1936
:param stop_index: The index which should be present. When it is
1937
present, history extension will stop.
1938
:param revision_id: The revision id which should be present. When
1939
it is encountered, history extension will stop.
1941
repo = self.repository
1942
if len(self._partial_revision_history_cache) == 0:
1943
iterator = repo.iter_reverse_revision_history(self.last_revision())
1945
start_revision = self._partial_revision_history_cache[-1]
1946
iterator = repo.iter_reverse_revision_history(start_revision)
1947
#skip the last revision in the list
1948
next_revision = iterator.next()
1949
for revision_id in iterator:
1950
self._partial_revision_history_cache.append(revision_id)
1951
if (stop_index is not None and
1952
len(self._partial_revision_history_cache) > stop_index):
1954
if revision_id == stop_revision:
1957
def _write_revision_history(self, history):
1958
"""Factored out of set_revision_history.
1960
This performs the actual writing to disk, with format-specific checks.
1961
It is intended to be called by BzrBranch5.set_revision_history.
1963
if len(history) == 0:
1964
last_revision = 'null:'
1966
if history != self._lefthand_history(history[-1]):
1967
raise errors.NotLefthandHistory(history)
1968
last_revision = history[-1]
1969
if self._get_append_revisions_only():
1970
self._check_history_violation(last_revision)
1971
self._write_last_revision_info(len(history), last_revision)
2736
1973
@needs_write_lock
2737
1974
def _set_parent_location(self, url):
2738
1975
"""Set the parent branch"""
2743
1980
"""Set the parent branch"""
2744
1981
return self._get_config_location('parent_location')
2747
def _set_all_reference_info(self, info_dict):
2748
"""Replace all reference info stored in a branch.
2750
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2753
writer = rio.RioWriter(s)
2754
for key, (tree_path, branch_location) in info_dict.iteritems():
2755
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2756
branch_location=branch_location)
2757
writer.write_stanza(stanza)
2758
self._transport.put_bytes('references', s.getvalue())
2759
self._reference_info = info_dict
2762
def _get_all_reference_info(self):
2763
"""Return all the reference info stored in a branch.
2765
:return: A dict of {file_id: (tree_path, branch_location)}
2767
if self._reference_info is not None:
2768
return self._reference_info
2769
rio_file = self._transport.get('references')
2771
stanzas = rio.read_stanzas(rio_file)
2772
info_dict = dict((s['file_id'], (s['tree_path'],
2773
s['branch_location'])) for s in stanzas)
2776
self._reference_info = info_dict
2779
def set_reference_info(self, file_id, tree_path, branch_location):
2780
"""Set the branch location to use for a tree reference.
2782
:param file_id: The file-id of the tree reference.
2783
:param tree_path: The path of the tree reference in the tree.
2784
:param branch_location: The location of the branch to retrieve tree
2787
info_dict = self._get_all_reference_info()
2788
info_dict[file_id] = (tree_path, branch_location)
2789
if None in (tree_path, branch_location):
2790
if tree_path is not None:
2791
raise ValueError('tree_path must be None when branch_location'
2793
if branch_location is not None:
2794
raise ValueError('branch_location must be None when tree_path'
2796
del info_dict[file_id]
2797
self._set_all_reference_info(info_dict)
2799
def get_reference_info(self, file_id):
2800
"""Get the tree_path and branch_location for a tree reference.
2802
:return: a tuple of (tree_path, branch_location)
2804
return self._get_all_reference_info().get(file_id, (None, None))
2806
def reference_parent(self, file_id, path, possible_transports=None):
2807
"""Return the parent branch for a tree-reference file_id.
2809
:param file_id: The file_id of the tree reference
2810
:param path: The path of the file_id in the tree
2811
:return: A branch associated with the file_id
2813
branch_location = self.get_reference_info(file_id)[1]
2814
if branch_location is None:
2815
return Branch.reference_parent(self, file_id, path,
2816
possible_transports)
2817
branch_location = urlutils.join(self.user_url, branch_location)
2818
return Branch.open(branch_location,
2819
possible_transports=possible_transports)
2821
1983
def set_push_location(self, location):
2822
1984
"""See Branch.set_push_location."""
2823
1985
self._set_config_location('push_location', location)
2825
1987
def set_bound_location(self, location):
2826
1988
"""See Branch.set_push_location."""
2827
self._master_branch_cache = None
2829
conf = self.get_config_stack()
1990
config = self.get_config()
2830
1991
if location is None:
2831
if not conf.get('bound'):
1992
if config.get_user_option('bound') != 'True':
2834
conf.set('bound', 'False')
1995
config.set_user_option('bound', 'False', warn_masked=True)
2837
1998
self._set_config_location('bound_location', location,
2839
conf.set('bound', 'True')
2000
config.set_user_option('bound', 'True', warn_masked=True)
2842
2003
def _get_bound_location(self, bound):
2843
2004
"""Return the bound location in the config file.
2845
2006
Return None if the bound parameter does not match"""
2846
conf = self.get_config_stack()
2847
if conf.get('bound') != bound:
2007
config = self.get_config()
2008
config_bound = (config.get_user_option('bound') == 'True')
2009
if config_bound != bound:
2849
return self._get_config_location('bound_location', config=conf)
2011
return self._get_config_location('bound_location', config=config)
2851
2013
def get_bound_location(self):
2852
"""See Branch.get_bound_location."""
2014
"""See Branch.set_push_location."""
2853
2015
return self._get_bound_location(True)
2855
2017
def get_old_bound_location(self):
2856
2018
"""See Branch.get_old_bound_location"""
2857
2019
return self._get_bound_location(False)
2859
def get_stacked_on_url(self):
2860
# you can always ask for the URL; but you might not be able to use it
2861
# if the repo can't support stacking.
2862
## self._check_stackable_repo()
2863
# stacked_on_location is only ever defined in branch.conf, so don't
2864
# waste effort reading the whole stack of config files.
2865
conf = _mod_config.BranchOnlyStack(self)
2866
stacked_url = self._get_config_location('stacked_on_location',
2868
if stacked_url is None:
2869
raise errors.NotStacked(self)
2870
return stacked_url.encode('utf-8')
2021
def set_append_revisions_only(self, enabled):
2026
self.get_config().set_user_option('append_revisions_only', value,
2029
def _get_append_revisions_only(self):
2030
value = self.get_config().get_user_option('append_revisions_only')
2031
return value == 'True'
2033
def _synchronize_history(self, destination, revision_id):
2034
"""Synchronize last revision and revision history between branches.
2036
This version is most efficient when the destination is also a
2037
BzrBranch6, but works for BzrBranch5, as long as the destination's
2038
repository contains all the lefthand ancestors of the intended
2039
last_revision. If not, set_last_revision_info will fail.
2041
:param destination: The branch to copy the history into
2042
:param revision_id: The revision-id to truncate history at. May
2043
be None to copy complete history.
2045
source_revno, source_revision_id = self.last_revision_info()
2046
if revision_id is None:
2047
revno, revision_id = source_revno, source_revision_id
2048
elif source_revision_id == revision_id:
2049
# we know the revno without needing to walk all of history
2050
revno = source_revno
2052
# To figure out the revno for a random revision, we need to build
2053
# the revision history, and count its length.
2054
# We don't care about the order, just how long it is.
2055
# Alternatively, we could start at the current location, and count
2056
# backwards. But there is no guarantee that we will find it since
2057
# it may be a merged revision.
2058
revno = len(list(self.repository.iter_reverse_revision_history(
2060
destination.set_last_revision_info(revno, revision_id)
2062
def _make_tags(self):
2063
return BasicTags(self)
2066
def generate_revision_history(self, revision_id, last_rev=None,
2068
"""See BzrBranch5.generate_revision_history"""
2069
history = self._lefthand_history(revision_id, last_rev, other_branch)
2070
revno = len(history)
2071
self.set_last_revision_info(revno, revision_id)
2872
2073
@needs_read_lock
2873
2074
def get_rev_id(self, revno, history=None):
2956
2127
:ivar new_revno: Revision number after pull.
2957
2128
:ivar old_revid: Tip revision id before pull.
2958
2129
:ivar new_revid: Tip revision id after pull.
2959
:ivar source_branch: Source (local) branch object. (read locked)
2960
:ivar master_branch: Master branch of the target, or the target if no
2962
:ivar local_branch: target branch if there is a Master, else None
2963
:ivar target_branch: Target/destination branch object. (write locked)
2964
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2965
:ivar tag_updates: A dict with new tags, see BasicTags.merge_to
2130
:ivar source_branch: Source (local) branch object.
2131
:ivar master_branch: Master branch of the target, or None.
2132
:ivar target_branch: Target/destination branch object.
2136
# DEPRECATED: pull used to return the change in revno
2137
return self.new_revno - self.old_revno
2968
2139
def report(self, to_file):
2969
tag_conflicts = getattr(self, "tag_conflicts", None)
2970
tag_updates = getattr(self, "tag_updates", None)
2971
2140
if not is_quiet():
2972
if self.old_revid != self.new_revid:
2141
if self.old_revid == self.new_revid:
2142
to_file.write('No revisions to pull.\n')
2973
2144
to_file.write('Now on revision %d.\n' % self.new_revno)
2975
to_file.write('%d tag(s) updated.\n' % len(tag_updates))
2976
if self.old_revid == self.new_revid and not tag_updates:
2977
if not tag_conflicts:
2978
to_file.write('No revisions or tags to pull.\n')
2980
to_file.write('No revisions to pull.\n')
2981
2145
self._show_tag_conficts(to_file)
2984
class BranchPushResult(_Result):
2148
class PushResult(_Result):
2985
2149
"""Result of a Branch.push operation.
2987
:ivar old_revno: Revision number (eg 10) of the target before push.
2988
:ivar new_revno: Revision number (eg 12) of the target after push.
2989
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2991
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2993
:ivar source_branch: Source branch object that the push was from. This is
2994
read locked, and generally is a local (and thus low latency) branch.
2995
:ivar master_branch: If target is a bound branch, the master branch of
2996
target, or target itself. Always write locked.
2997
:ivar target_branch: The direct Branch where data is being sent (write
2999
:ivar local_branch: If the target is a bound branch this will be the
3000
target, otherwise it will be None.
2151
:ivar old_revno: Revision number before push.
2152
:ivar new_revno: Revision number after push.
2153
:ivar old_revid: Tip revision id before push.
2154
:ivar new_revid: Tip revision id after push.
2155
:ivar source_branch: Source branch object.
2156
:ivar master_branch: Master branch of the target, or None.
2157
:ivar target_branch: Target/destination branch object.
2161
# DEPRECATED: push used to return the change in revno
2162
return self.new_revno - self.old_revno
3003
2164
def report(self, to_file):
3004
# TODO: This function gets passed a to_file, but then
3005
# ignores it and calls note() instead. This is also
3006
# inconsistent with PullResult(), which writes to stdout.
3007
# -- JRV20110901, bug #838853
3008
tag_conflicts = getattr(self, "tag_conflicts", None)
3009
tag_updates = getattr(self, "tag_updates", None)
3011
if self.old_revid != self.new_revid:
3012
note(gettext('Pushed up to revision %d.') % self.new_revno)
3014
note(ngettext('%d tag updated.', '%d tags updated.', len(tag_updates)) % len(tag_updates))
3015
if self.old_revid == self.new_revid and not tag_updates:
3016
if not tag_conflicts:
3017
note(gettext('No new revisions or tags to push.'))
3019
note(gettext('No new revisions to push.'))
2165
"""Write a human-readable description of the result."""
2166
if self.old_revid == self.new_revid:
2167
to_file.write('No new revisions to push.\n')
2169
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
3020
2170
self._show_tag_conficts(to_file)
3053
2201
# Copy source data into target
3054
2202
new_branch._write_last_revision_info(*branch.last_revision_info())
3055
new_branch.lock_write()
3057
new_branch.set_parent(branch.get_parent())
3058
new_branch.set_bound_location(branch.get_bound_location())
3059
new_branch.set_push_location(branch.get_push_location())
2203
new_branch.set_parent(branch.get_parent())
2204
new_branch.set_bound_location(branch.get_bound_location())
2205
new_branch.set_push_location(branch.get_push_location())
3063
2207
# New branch has no tags by default
3064
2208
new_branch.tags._set_tag_dict({})
3066
2210
# Copying done; now update target format
3067
new_branch._transport.put_bytes('format',
3069
mode=new_branch.bzrdir._get_file_mode())
2211
new_branch.control_files.put_utf8('format',
2212
format.get_format_string())
3071
2214
# Clean up old files
3072
new_branch._transport.delete('revision-history')
3076
branch.set_parent(None)
3077
except errors.NoSuchFile:
3079
branch.set_bound_location(None)
3084
class Converter6to7(object):
3085
"""Perform an in-place upgrade of format 6 to format 7"""
3087
def convert(self, branch):
3088
format = BzrBranchFormat7()
3089
branch._set_config_location('stacked_on_location', '')
3090
# update target format
3091
branch._transport.put_bytes('format', format.as_string())
3094
class Converter7to8(object):
3095
"""Perform an in-place upgrade of format 7 to format 8"""
3097
def convert(self, branch):
3098
format = BzrBranchFormat8()
3099
branch._transport.put_bytes('references', '')
3100
# update target format
3101
branch._transport.put_bytes('format', format.as_string())
3104
class InterBranch(InterObject):
3105
"""This class represents operations taking place between two branches.
3107
Its instances have methods like pull() and push() and contain
3108
references to the source and target repositories these operations
3109
can be carried out on.
3113
"""The available optimised InterBranch types."""
3116
def _get_branch_formats_to_test(klass):
3117
"""Return an iterable of format tuples for testing.
3119
:return: An iterable of (from_format, to_format) to use when testing
3120
this InterBranch class. Each InterBranch class should define this
3123
raise NotImplementedError(klass._get_branch_formats_to_test)
3126
def pull(self, overwrite=False, stop_revision=None,
3127
possible_transports=None, local=False):
3128
"""Mirror source into target branch.
3130
The target branch is considered to be 'local', having low latency.
3132
:returns: PullResult instance
3134
raise NotImplementedError(self.pull)
3137
def push(self, overwrite=False, stop_revision=None, lossy=False,
3138
_override_hook_source_branch=None):
3139
"""Mirror the source branch into the target branch.
3141
The source branch is considered to be 'local', having low latency.
3143
raise NotImplementedError(self.push)
3146
def copy_content_into(self, revision_id=None):
3147
"""Copy the content of source into target
3149
revision_id: if not None, the revision history in the new branch will
3150
be truncated to end with revision_id.
3152
raise NotImplementedError(self.copy_content_into)
3155
def fetch(self, stop_revision=None, limit=None):
3158
:param stop_revision: Last revision to fetch
3159
:param limit: Optional rough limit of revisions to fetch
3161
raise NotImplementedError(self.fetch)
3164
def _fix_overwrite_type(overwrite):
3165
if isinstance(overwrite, bool):
3167
return ["history", "tags"]
3173
class GenericInterBranch(InterBranch):
3174
"""InterBranch implementation that uses public Branch functions."""
3177
def is_compatible(klass, source, target):
3178
# GenericBranch uses the public API, so always compatible
3182
def _get_branch_formats_to_test(klass):
3183
return [(format_registry.get_default(), format_registry.get_default())]
3186
def unwrap_format(klass, format):
3187
if isinstance(format, remote.RemoteBranchFormat):
3188
format._ensure_real()
3189
return format._custom_format
3193
def copy_content_into(self, revision_id=None):
3194
"""Copy the content of source into target
3196
revision_id: if not None, the revision history in the new branch will
3197
be truncated to end with revision_id.
3199
self.source.update_references(self.target)
3200
self.source._synchronize_history(self.target, revision_id)
3202
parent = self.source.get_parent()
3203
except errors.InaccessibleParent, e:
3204
mutter('parent was not accessible to copy: %s', e)
3207
self.target.set_parent(parent)
3208
if self.source._push_should_merge_tags():
3209
self.source.tags.merge_to(self.target.tags)
3212
def fetch(self, stop_revision=None, limit=None):
3213
if self.target.base == self.source.base:
3215
self.source.lock_read()
3217
fetch_spec_factory = fetch.FetchSpecFactory()
3218
fetch_spec_factory.source_branch = self.source
3219
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3220
fetch_spec_factory.source_repo = self.source.repository
3221
fetch_spec_factory.target_repo = self.target.repository
3222
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3223
fetch_spec_factory.limit = limit
3224
fetch_spec = fetch_spec_factory.make_fetch_spec()
3225
return self.target.repository.fetch(self.source.repository,
3226
fetch_spec=fetch_spec)
3228
self.source.unlock()
3231
def _update_revisions(self, stop_revision=None, overwrite=False,
3233
other_revno, other_last_revision = self.source.last_revision_info()
3234
stop_revno = None # unknown
3235
if stop_revision is None:
3236
stop_revision = other_last_revision
3237
if _mod_revision.is_null(stop_revision):
3238
# if there are no commits, we're done.
3240
stop_revno = other_revno
3242
# what's the current last revision, before we fetch [and change it
3244
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3245
# we fetch here so that we don't process data twice in the common
3246
# case of having something to pull, and so that the check for
3247
# already merged can operate on the just fetched graph, which will
3248
# be cached in memory.
3249
self.fetch(stop_revision=stop_revision)
3250
# Check to see if one is an ancestor of the other
3253
graph = self.target.repository.get_graph()
3254
if self.target._check_if_descendant_or_diverged(
3255
stop_revision, last_rev, graph, self.source):
3256
# stop_revision is a descendant of last_rev, but we aren't
3257
# overwriting, so we're done.
3259
if stop_revno is None:
3261
graph = self.target.repository.get_graph()
3262
this_revno, this_last_revision = \
3263
self.target.last_revision_info()
3264
stop_revno = graph.find_distance_to_null(stop_revision,
3265
[(other_last_revision, other_revno),
3266
(this_last_revision, this_revno)])
3267
self.target.set_last_revision_info(stop_revno, stop_revision)
3270
def pull(self, overwrite=False, stop_revision=None,
3271
possible_transports=None, run_hooks=True,
3272
_override_hook_target=None, local=False):
3273
"""Pull from source into self, updating my master if any.
3275
:param run_hooks: Private parameter - if false, this branch
3276
is being called because it's the master of the primary branch,
3277
so it should not run its hooks.
3279
bound_location = self.target.get_bound_location()
3280
if local and not bound_location:
3281
raise errors.LocalRequiresBoundBranch()
3282
master_branch = None
3283
source_is_master = False
3285
# bound_location comes from a config file, some care has to be
3286
# taken to relate it to source.user_url
3287
normalized = urlutils.normalize_url(bound_location)
3289
relpath = self.source.user_transport.relpath(normalized)
3290
source_is_master = (relpath == '')
3291
except (errors.PathNotChild, errors.InvalidURL):
3292
source_is_master = False
3293
if not local and bound_location and not source_is_master:
3294
# not pulling from master, so we need to update master.
3295
master_branch = self.target.get_master_branch(possible_transports)
3296
master_branch.lock_write()
3299
# pull from source into master.
3300
master_branch.pull(self.source, overwrite, stop_revision,
3302
return self._pull(overwrite,
3303
stop_revision, _hook_master=master_branch,
3304
run_hooks=run_hooks,
3305
_override_hook_target=_override_hook_target,
3306
merge_tags_to_master=not source_is_master)
3309
master_branch.unlock()
3311
def push(self, overwrite=False, stop_revision=None, lossy=False,
3312
_override_hook_source_branch=None):
3313
"""See InterBranch.push.
3315
This is the basic concrete implementation of push()
3317
:param _override_hook_source_branch: If specified, run the hooks
3318
passing this Branch as the source, rather than self. This is for
3319
use of RemoteBranch, where push is delegated to the underlying
3323
raise errors.LossyPushToSameVCS(self.source, self.target)
3324
# TODO: Public option to disable running hooks - should be trivial but
3327
op = cleanup.OperationWithCleanups(self._push_with_bound_branches)
3328
op.add_cleanup(self.source.lock_read().unlock)
3329
op.add_cleanup(self.target.lock_write().unlock)
3330
return op.run(overwrite, stop_revision,
3331
_override_hook_source_branch=_override_hook_source_branch)
3333
def _basic_push(self, overwrite, stop_revision):
3334
"""Basic implementation of push without bound branches or hooks.
3336
Must be called with source read locked and target write locked.
3338
result = BranchPushResult()
3339
result.source_branch = self.source
3340
result.target_branch = self.target
3341
result.old_revno, result.old_revid = self.target.last_revision_info()
3342
self.source.update_references(self.target)
3343
overwrite = _fix_overwrite_type(overwrite)
3344
if result.old_revid != stop_revision:
3345
# We assume that during 'push' this repository is closer than
3347
graph = self.source.repository.get_graph(self.target.repository)
3348
self._update_revisions(stop_revision,
3349
overwrite=("history" in overwrite),
3351
if self.source._push_should_merge_tags():
3352
result.tag_updates, result.tag_conflicts = (
3353
self.source.tags.merge_to(
3354
self.target.tags, "tags" in overwrite))
3355
result.new_revno, result.new_revid = self.target.last_revision_info()
3358
def _push_with_bound_branches(self, operation, overwrite, stop_revision,
3359
_override_hook_source_branch=None):
3360
"""Push from source into target, and into target's master if any.
3363
if _override_hook_source_branch:
3364
result.source_branch = _override_hook_source_branch
3365
for hook in Branch.hooks['post_push']:
3368
bound_location = self.target.get_bound_location()
3369
if bound_location and self.target.base != bound_location:
3370
# there is a master branch.
3372
# XXX: Why the second check? Is it even supported for a branch to
3373
# be bound to itself? -- mbp 20070507
3374
master_branch = self.target.get_master_branch()
3375
master_branch.lock_write()
3376
operation.add_cleanup(master_branch.unlock)
3377
# push into the master from the source branch.
3378
master_inter = InterBranch.get(self.source, master_branch)
3379
master_inter._basic_push(overwrite, stop_revision)
3380
# and push into the target branch from the source. Note that
3381
# we push from the source branch again, because it's considered
3382
# the highest bandwidth repository.
3383
result = self._basic_push(overwrite, stop_revision)
3384
result.master_branch = master_branch
3385
result.local_branch = self.target
3387
master_branch = None
3389
result = self._basic_push(overwrite, stop_revision)
3390
# TODO: Why set master_branch and local_branch if there's no
3391
# binding? Maybe cleaner to just leave them unset? -- mbp
3393
result.master_branch = self.target
3394
result.local_branch = None
3398
def _pull(self, overwrite=False, stop_revision=None,
3399
possible_transports=None, _hook_master=None, run_hooks=True,
3400
_override_hook_target=None, local=False,
3401
merge_tags_to_master=True):
3404
This function is the core worker, used by GenericInterBranch.pull to
3405
avoid duplication when pulling source->master and source->local.
3407
:param _hook_master: Private parameter - set the branch to
3408
be supplied as the master to pull hooks.
3409
:param run_hooks: Private parameter - if false, this branch
3410
is being called because it's the master of the primary branch,
3411
so it should not run its hooks.
3412
is being called because it's the master of the primary branch,
3413
so it should not run its hooks.
3414
:param _override_hook_target: Private parameter - set the branch to be
3415
supplied as the target_branch to pull hooks.
3416
:param local: Only update the local branch, and not the bound branch.
3418
# This type of branch can't be bound.
3420
raise errors.LocalRequiresBoundBranch()
3421
result = PullResult()
3422
result.source_branch = self.source
3423
if _override_hook_target is None:
3424
result.target_branch = self.target
3426
result.target_branch = _override_hook_target
3427
self.source.lock_read()
3429
# We assume that during 'pull' the target repository is closer than
3431
self.source.update_references(self.target)
3432
graph = self.target.repository.get_graph(self.source.repository)
3433
# TODO: Branch formats should have a flag that indicates
3434
# that revno's are expensive, and pull() should honor that flag.
3436
result.old_revno, result.old_revid = \
3437
self.target.last_revision_info()
3438
overwrite = _fix_overwrite_type(overwrite)
3439
self._update_revisions(stop_revision,
3440
overwrite=("history" in overwrite),
3442
# TODO: The old revid should be specified when merging tags,
3443
# so a tags implementation that versions tags can only
3444
# pull in the most recent changes. -- JRV20090506
3445
result.tag_updates, result.tag_conflicts = (
3446
self.source.tags.merge_to(self.target.tags,
3447
"tags" in overwrite,
3448
ignore_master=not merge_tags_to_master))
3449
result.new_revno, result.new_revid = self.target.last_revision_info()
3451
result.master_branch = _hook_master
3452
result.local_branch = result.target_branch
3454
result.master_branch = result.target_branch
3455
result.local_branch = None
3457
for hook in Branch.hooks['post_pull']:
3460
self.source.unlock()
3464
InterBranch.register_optimiser(GenericInterBranch)
2215
new_branch.control_files._transport.delete('revision-history')
2217
branch.set_parent(None)
2218
except errors.NoSuchFile:
2220
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
