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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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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from copy import deepcopy
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from cStringIO import StringIO
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from unittest import TestSuite
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from warnings import warn
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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from bzrlib import (
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TransportConfig
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from bzrlib.repofmt.pack_repo import RepositoryFormatKnitPack5RichRoot
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.hooks import HookPoint, Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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from bzrlib.config import TreeConfig
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
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HistoryMissing, InvalidRevisionId,
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InvalidRevisionNumber, LockError, NoSuchFile,
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NoSuchRevision, NoWorkingTree, NotVersionedError,
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NotBranchError, UninitializableFormat,
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UnlistableStore, UnlistableBranch,
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine,
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from bzrlib.trace import mutter, note
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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class Branch(bzrdir.ControlComponent):
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BZR_BRANCH_FORMAT_6 = "Bazaar-NG branch, format 6\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch; using control_url and
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control_transport is more standardized.
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hooks: An instance of BranchHooks.
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Base directory/url of the branch.
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# this is really an instance variable - FIXME move it there
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def control_transport(self):
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return self._transport
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def user_transport(self):
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return self.bzrdir.user_transport
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def __init__(self, *ignored, **ignored_too):
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self.tags = self._format.make_tags(self)
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self._revision_history_cache = None
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self._revision_id_to_revno_cache = None
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self._partial_revision_id_to_revno_cache = {}
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self._partial_revision_history_cache = []
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self._last_revision_info_cache = None
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self._merge_sorted_revisions_cache = None
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hooks = Branch.hooks['open']
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def _open_hook(self):
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"""Called by init to allow simpler extension of the base class."""
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def _activate_fallback_location(self, url):
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"""Activate the branch/repository from url as a fallback repository."""
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repo = self._get_fallback_repository(url)
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if repo.has_same_location(self.repository):
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raise errors.UnstackableLocationError(self.user_url, url)
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self.repository.add_fallback_repository(repo)
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raise NotImplementedError('The Branch class is abstract')
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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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if master is not None:
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master.break_lock()
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self.repository._format,
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self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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@deprecated_method(zero_eight)
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def open_downlevel(base):
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"""Open a branch which may be of an old format."""
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return Branch.open(base, _unsupported=True)
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def open(base, _unsupported=False):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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def open_containing(url, possible_transports=None):
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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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def open_containing(url):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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control, relpath = bzrdir.BzrDir.open_containing(url)
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return control.open_branch(), relpath
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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@deprecated_function(zero_eight)
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def initialize(base):
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"""Create a new working tree and branch, rooted at 'base' (url)
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NOTE: This will soon be deprecated in favour of creation
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return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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@deprecated_function(zero_eight)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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NOTE: This is unused.
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def get_config(self):
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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master is not None:
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# return the master branch value
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except errors.BzrError, e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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return bzrlib.config.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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self.get_config().set_user_option('nickname', nick)
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nick = property(_get_nick, _set_nick)
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def is_locked(self):
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map and
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len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
418
* 'with-merges' - include the stop revision and all of its
419
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
427
ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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# Make sure we don't return revisions that are not part of the
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# start_revision_id ancestry.
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filtered = self._filter_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))
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raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
467
start_revision_id, stop_revision_id, stop_rule):
468
"""Iterate over an inclusive range of sorted revisions."""
469
rev_iter = iter(merge_sorted_revisions)
470
if start_revision_id is not None:
471
for node in rev_iter:
472
rev_id = node.key[-1]
473
if rev_id != start_revision_id:
476
# The decision to include the start or not
477
# depends on the stop_rule if a stop is provided
478
# so pop this node back into the iterator
479
rev_iter = chain(iter([node]), rev_iter)
481
if stop_revision_id is None:
483
for node in rev_iter:
484
rev_id = node.key[-1]
485
yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'exclude':
488
for node in rev_iter:
489
rev_id = node.key[-1]
490
if rev_id == stop_revision_id:
492
yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'include':
495
for node in rev_iter:
496
rev_id = node.key[-1]
497
yield (rev_id, node.merge_depth, node.revno,
499
if rev_id == stop_revision_id:
501
elif stop_rule == 'with-merges-without-common-ancestry':
502
# We want to exclude all revisions that are already part of the
503
# stop_revision_id ancestry.
504
graph = self.repository.get_graph()
505
ancestors = graph.find_unique_ancestors(start_revision_id,
507
for node in rev_iter:
508
rev_id = node.key[-1]
509
if rev_id not in ancestors:
511
yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'with-merges':
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stop_rev = self.repository.get_revision(stop_revision_id)
515
if stop_rev.parent_ids:
516
left_parent = stop_rev.parent_ids[0]
518
left_parent = _mod_revision.NULL_REVISION
519
# left_parent is the actual revision we want to stop logging at,
520
# since we want to show the merged revisions after the stop_rev too
521
reached_stop_revision_id = False
522
revision_id_whitelist = []
523
for node in rev_iter:
524
rev_id = node.key[-1]
525
if rev_id == left_parent:
526
# reached the left parent after the stop_revision
528
if (not reached_stop_revision_id or
529
rev_id in revision_id_whitelist):
530
yield (rev_id, node.merge_depth, node.revno,
532
if reached_stop_revision_id or rev_id == stop_revision_id:
533
# only do the merged revs of rev_id from now on
534
rev = self.repository.get_revision(rev_id)
536
reached_stop_revision_id = True
537
revision_id_whitelist.extend(rev.parent_ids)
539
raise ValueError('invalid stop_rule %r' % stop_rule)
541
def _filter_start_non_ancestors(self, rev_iter):
542
# If we started from a dotted revno, we want to consider it as a tip
543
# and don't want to yield revisions that are not part of its
544
# ancestry. Given the order guaranteed by the merge sort, we will see
545
# uninteresting descendants of the first parent of our tip before the
547
first = rev_iter.next()
548
(rev_id, merge_depth, revno, end_of_merge) = first
551
# We start at a mainline revision so by definition, all others
552
# revisions in rev_iter are ancestors
553
for node in rev_iter:
558
pmap = self.repository.get_parent_map([rev_id])
559
parents = pmap.get(rev_id, [])
561
whitelist.update(parents)
563
# If there is no parents, there is nothing of interest left
565
# FIXME: It's hard to test this scenario here as this code is never
566
# called in that case. -- vila 20100322
569
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
571
if rev_id in whitelist:
572
pmap = self.repository.get_parent_map([rev_id])
573
parents = pmap.get(rev_id, [])
574
whitelist.remove(rev_id)
575
whitelist.update(parents)
577
# We've reached the mainline, there is nothing left to
581
# A revision that is not part of the ancestry of our
584
yield (rev_id, merge_depth, revno, end_of_merge)
586
def leave_lock_in_place(self):
587
"""Tell this branch object not to release the physical lock when this
590
If lock_write doesn't return a token, then this method is not supported.
592
self.control_files.leave_in_place()
594
def dont_leave_lock_in_place(self):
595
"""Tell this branch object to release the physical lock when this
596
object is unlocked, even if it didn't originally acquire it.
598
If lock_write doesn't return a token, then this method is not supported.
600
self.control_files.dont_leave_in_place()
180
def abspath(self, name):
181
"""Return absolute filename for something in the branch
183
XXX: Robert Collins 20051017 what is this used for? why is it a branch
184
method and not a tree method.
186
raise NotImplementedError(self.abspath)
602
188
def bind(self, other):
603
189
"""Bind the local branch the other branch.
698
272
The delta is relative to its mainline predecessor, or the
699
273
empty tree for revision 1.
275
assert isinstance(revno, int)
701
276
rh = self.revision_history()
702
277
if not (1 <= revno <= len(rh)):
703
raise errors.InvalidRevisionNumber(revno)
278
raise InvalidRevisionNumber(revno)
704
279
return self.repository.get_revision_delta(rh[revno-1])
706
def get_stacked_on_url(self):
707
"""Get the URL this branch is stacked against.
709
:raises NotStacked: If the branch is not stacked.
710
:raises UnstackableBranchFormat: If the branch does not support
713
raise NotImplementedError(self.get_stacked_on_url)
281
def get_root_id(self):
282
"""Return the id of this branches root"""
283
raise NotImplementedError(self.get_root_id)
715
285
def print_file(self, file, revision_id):
716
286
"""Print `file` to stdout."""
717
287
raise NotImplementedError(self.print_file)
289
def append_revision(self, *revision_ids):
290
raise NotImplementedError(self.append_revision)
719
292
def set_revision_history(self, rev_history):
720
293
raise NotImplementedError(self.set_revision_history)
723
def set_parent(self, url):
724
"""See Branch.set_parent."""
725
# TODO: Maybe delete old location files?
726
# URLs should never be unicode, even on the local fs,
727
# FIXUP this and get_parent in a future branch format bump:
728
# read and rewrite the file. RBC 20060125
730
if isinstance(url, unicode):
732
url = url.encode('ascii')
733
except UnicodeEncodeError:
734
raise errors.InvalidURL(url,
735
"Urls must be 7-bit ascii, "
736
"use bzrlib.urlutils.escape")
737
url = urlutils.relative_url(self.base, url)
738
self._set_parent_location(url)
741
def set_stacked_on_url(self, url):
742
"""Set the URL this branch is stacked against.
744
:raises UnstackableBranchFormat: If the branch does not support
746
:raises UnstackableRepositoryFormat: If the repository does not support
749
if not self._format.supports_stacking():
750
raise errors.UnstackableBranchFormat(self._format, self.user_url)
751
# XXX: Changing from one fallback repository to another does not check
752
# that all the data you need is present in the new fallback.
753
# Possibly it should.
754
self._check_stackable_repo()
757
old_url = self.get_stacked_on_url()
758
except (errors.NotStacked, errors.UnstackableBranchFormat,
759
errors.UnstackableRepositoryFormat):
763
self._activate_fallback_location(url)
764
# write this out after the repository is stacked to avoid setting a
765
# stacked config that doesn't work.
766
self._set_config_location('stacked_on_location', url)
769
"""Change a branch to be unstacked, copying data as needed.
771
Don't call this directly, use set_stacked_on_url(None).
773
pb = ui.ui_factory.nested_progress_bar()
775
pb.update("Unstacking")
776
# The basic approach here is to fetch the tip of the branch,
777
# including all available ghosts, from the existing stacked
778
# repository into a new repository object without the fallbacks.
780
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
781
# correct for CHKMap repostiories
782
old_repository = self.repository
783
if len(old_repository._fallback_repositories) != 1:
784
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
787
old_repository.unlock()
788
old_repository.lock_read()
790
# Repositories don't offer an interface to remove fallback
791
# repositories today; take the conceptually simpler option and just
792
# reopen it. We reopen it starting from the URL so that we
793
# get a separate connection for RemoteRepositories and can
794
# stream from one of them to the other. This does mean doing
795
# separate SSH connection setup, but unstacking is not a
796
# common operation so it's tolerable.
797
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
798
new_repository = new_bzrdir.find_repository()
799
self.repository = new_repository
800
if self.repository._fallback_repositories:
801
raise AssertionError("didn't expect %r to have "
802
"fallback_repositories"
803
% (self.repository,))
804
# this is not paired with an unlock because it's just restoring
805
# the previous state; the lock's released when set_stacked_on_url
807
self.repository.lock_write()
808
# XXX: If you unstack a branch while it has a working tree
809
# with a pending merge, the pending-merged revisions will no
810
# longer be present. You can (probably) revert and remerge.
812
# XXX: This only fetches up to the tip of the repository; it
813
# doesn't bring across any tags. That's fairly consistent
814
# with how branch works, but perhaps not ideal.
815
self.repository.fetch(old_repository,
816
revision_id=self.last_revision(),
819
old_repository.unlock()
823
def _set_tags_bytes(self, bytes):
824
"""Mirror method for _get_tags_bytes.
826
:seealso: Branch._get_tags_bytes.
828
return _run_with_write_locked_target(self, self._transport.put_bytes,
831
def _cache_revision_history(self, rev_history):
832
"""Set the cached revision history to rev_history.
834
The revision_history method will use this cache to avoid regenerating
835
the revision history.
837
This API is semi-public; it only for use by subclasses, all other code
838
should consider it to be private.
840
self._revision_history_cache = rev_history
842
def _cache_revision_id_to_revno(self, revision_id_to_revno):
843
"""Set the cached revision_id => revno map to revision_id_to_revno.
845
This API is semi-public; it only for use by subclasses, all other code
846
should consider it to be private.
848
self._revision_id_to_revno_cache = revision_id_to_revno
850
def _clear_cached_state(self):
851
"""Clear any cached data on this branch, e.g. cached revision history.
853
This means the next call to revision_history will need to call
854
_gen_revision_history.
856
This API is semi-public; it only for use by subclasses, all other code
857
should consider it to be private.
859
self._revision_history_cache = None
860
self._revision_id_to_revno_cache = None
861
self._last_revision_info_cache = None
862
self._merge_sorted_revisions_cache = None
863
self._partial_revision_history_cache = []
864
self._partial_revision_id_to_revno_cache = {}
866
def _gen_revision_history(self):
867
"""Return sequence of revision hashes on to this branch.
869
Unlike revision_history, this method always regenerates or rereads the
870
revision history, i.e. it does not cache the result, so repeated calls
873
Concrete subclasses should override this instead of revision_history so
874
that subclasses do not need to deal with caching logic.
876
This API is semi-public; it only for use by subclasses, all other code
877
should consider it to be private.
879
raise NotImplementedError(self._gen_revision_history)
882
295
def revision_history(self):
883
"""Return sequence of revision ids on this branch.
885
This method will cache the revision history for as long as it is safe to
888
if 'evil' in debug.debug_flags:
889
mutter_callsite(3, "revision_history scales with history.")
890
if self._revision_history_cache is not None:
891
history = self._revision_history_cache
893
history = self._gen_revision_history()
894
self._cache_revision_history(history)
296
"""Return sequence of revision hashes on to this branch."""
297
raise NotImplementedError(self.revision_history)
898
300
"""Return current revision number for this branch.
942
329
common_index = min(self_len, other_len) -1
943
330
if common_index >= 0 and \
944
331
self_history[common_index] != other_history[common_index]:
945
raise errors.DivergedBranches(self, other)
332
raise DivergedBranches(self, other)
947
334
if stop_revision is None:
948
335
stop_revision = other_len
337
assert isinstance(stop_revision, int)
950
338
if stop_revision > other_len:
951
339
raise errors.NoSuchRevision(self, stop_revision)
952
340
return other_history[self_len:stop_revision]
955
def update_revisions(self, other, stop_revision=None, overwrite=False,
342
def update_revisions(self, other, stop_revision=None):
957
343
"""Pull in new perfect-fit revisions.
959
345
:param other: Another Branch to pull from
960
346
:param stop_revision: Updated until the given revision
961
:param overwrite: Always set the branch pointer, rather than checking
962
to see if it is a proper descendant.
963
:param graph: A Graph object that can be used to query history
964
information. This can be None.
967
return InterBranch.get(other, self).update_revisions(stop_revision,
970
def import_last_revision_info(self, source_repo, revno, revid):
971
"""Set the last revision info, importing from another repo if necessary.
973
This is used by the bound branch code to upload a revision to
974
the master branch first before updating the tip of the local branch.
976
:param source_repo: Source repository to optionally fetch from
977
:param revno: Revision number of the new tip
978
:param revid: Revision id of the new tip
980
if not self.repository.has_same_location(source_repo):
981
self.repository.fetch(source_repo, revision_id=revid)
982
self.set_last_revision_info(revno, revid)
349
raise NotImplementedError(self.update_revisions)
984
351
def revision_id_to_revno(self, revision_id):
985
352
"""Given a revision id, return its revno"""
986
if _mod_revision.is_null(revision_id):
353
if revision_id is None:
988
355
history = self.revision_history()
990
357
return history.index(revision_id) + 1
991
358
except ValueError:
992
raise errors.NoSuchRevision(self, revision_id)
359
raise bzrlib.errors.NoSuchRevision(self, revision_id)
995
361
def get_rev_id(self, revno, history=None):
996
362
"""Find the revision id of the specified revno."""
998
return _mod_revision.NULL_REVISION
999
last_revno, last_revid = self.last_revision_info()
1000
if revno == last_revno:
1002
if revno <= 0 or revno > last_revno:
1003
raise errors.NoSuchRevision(self, revno)
1004
distance_from_last = last_revno - revno
1005
if len(self._partial_revision_history_cache) <= distance_from_last:
1006
self._extend_partial_history(distance_from_last)
1007
return self._partial_revision_history_cache[distance_from_last]
1010
def pull(self, source, overwrite=False, stop_revision=None,
1011
possible_transports=None, *args, **kwargs):
1012
"""Mirror source into this branch.
1014
This branch is considered to be 'local', having low latency.
1016
:returns: PullResult instance
1018
return InterBranch.get(source, self).pull(overwrite=overwrite,
1019
stop_revision=stop_revision,
1020
possible_transports=possible_transports, *args, **kwargs)
1022
def push(self, target, overwrite=False, stop_revision=None, *args,
1024
"""Mirror this branch into target.
1026
This branch is considered to be 'local', having low latency.
1028
return InterBranch.get(self, target).push(overwrite, stop_revision,
1031
def lossy_push(self, target, stop_revision=None):
1032
"""Push deltas into another branch.
1034
:note: This does not, like push, retain the revision ids from
1035
the source branch and will, rather than adding bzr-specific
1036
metadata, push only those semantics of the revision that can be
1037
natively represented by this branch' VCS.
1039
:param target: Target branch
1040
:param stop_revision: Revision to push, defaults to last revision.
1041
:return: BranchPushResult with an extra member revidmap:
1042
A dictionary mapping revision ids from the target branch
1043
to new revision ids in the target branch, for each
1044
revision that was pushed.
1046
inter = InterBranch.get(self, target)
1047
lossy_push = getattr(inter, "lossy_push", None)
1048
if lossy_push is None:
1049
raise errors.LossyPushToSameVCS(self, target)
1050
return lossy_push(stop_revision)
366
history = self.revision_history()
367
if revno <= 0 or revno > len(history):
368
raise bzrlib.errors.NoSuchRevision(self, revno)
369
return history[revno - 1]
371
def pull(self, source, overwrite=False, stop_revision=None):
372
raise NotImplementedError(self.pull)
1052
374
def basis_tree(self):
1053
375
"""Return `Tree` object for last revision."""
1054
376
return self.repository.revision_tree(self.last_revision())
378
def rename_one(self, from_rel, to_rel):
381
This can change the directory or the filename or both.
383
raise NotImplementedError(self.rename_one)
385
def move(self, from_paths, to_name):
388
to_name must exist as a versioned directory.
390
If to_name exists and is a directory, the files are moved into
391
it, keeping their old names. If it is a directory,
393
Note that to_name is only the last component of the new name;
394
this doesn't change the directory.
396
This returns a list of (from_path, to_path) pairs for each
399
raise NotImplementedError(self.move)
1056
401
def get_parent(self):
1057
402
"""Return the parent location of the branch.
1059
This is the default location for pull/missing. The usual
404
This is the default location for push/pull/missing. The usual
1060
405
pattern is that the user can override it by specifying a
1063
parent = self._get_parent_location()
1066
# This is an old-format absolute path to a local branch
1067
# turn it into a url
1068
if parent.startswith('/'):
1069
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1071
return urlutils.join(self.base[:-1], parent)
1072
except errors.InvalidURLJoin, e:
1073
raise errors.InaccessibleParent(parent, self.user_url)
1075
def _get_parent_location(self):
1076
raise NotImplementedError(self._get_parent_location)
1078
def _set_config_location(self, name, url, config=None,
1079
make_relative=False):
1081
config = self.get_config()
1085
url = urlutils.relative_url(self.base, url)
1086
config.set_user_option(name, url, warn_masked=True)
1088
def _get_config_location(self, name, config=None):
1090
config = self.get_config()
1091
location = config.get_user_option(name)
1096
def get_child_submit_format(self):
1097
"""Return the preferred format of submissions to this branch."""
1098
return self.get_config().get_user_option("child_submit_format")
408
raise NotImplementedError(self.get_parent)
1100
410
def get_submit_branch(self):
1101
411
"""Return the submit location of the branch.
1180
453
self.check_real_revno(revno)
1182
455
def check_real_revno(self, revno):
1184
457
Check whether a revno corresponds to a real revision.
1185
458
Zero (the NULL revision) is considered invalid
1187
460
if revno < 1 or revno > self.revno():
1188
raise errors.InvalidRevisionNumber(revno)
461
raise InvalidRevisionNumber(revno)
1190
463
@needs_read_lock
1191
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
464
def clone(self, *args, **kwargs):
1192
465
"""Clone this branch into to_bzrdir preserving all semantic values.
1194
Most API users will want 'create_clone_on_transport', which creates a
1195
new bzrdir and branch on the fly.
1197
467
revision_id: if not None, the revision history in the new branch will
1198
468
be truncated to end with revision_id.
1200
result = to_bzrdir.create_branch()
1203
if repository_policy is not None:
1204
repository_policy.configure_branch(result)
1205
self.copy_content_into(result, revision_id=revision_id)
470
# for API compatibility, until 0.8 releases we provide the old api:
471
# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
472
# after 0.8 releases, the *args and **kwargs should be changed:
473
# def clone(self, to_bzrdir, revision_id=None):
474
if (kwargs.get('to_location', None) or
475
kwargs.get('revision', None) or
476
kwargs.get('basis_branch', None) or
477
(len(args) and isinstance(args[0], basestring))):
478
# backwards compatibility api:
479
warn("Branch.clone() has been deprecated for BzrDir.clone() from"
480
" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
483
basis_branch = args[2]
485
basis_branch = kwargs.get('basis_branch', None)
487
basis = basis_branch.bzrdir
492
revision_id = args[1]
494
revision_id = kwargs.get('revision', None)
499
# no default to raise if not provided.
500
url = kwargs.get('to_location')
501
return self.bzrdir.clone(url,
502
revision_id=revision_id,
503
basis=basis).open_branch()
505
# generate args by hand
507
revision_id = args[1]
509
revision_id = kwargs.get('revision_id', None)
513
# no default to raise if not provided.
514
to_bzrdir = kwargs.get('to_bzrdir')
515
result = self._format.initialize(to_bzrdir)
516
self.copy_content_into(result, revision_id=revision_id)
1210
519
@needs_read_lock
1211
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
520
def sprout(self, to_bzrdir, revision_id=None):
1212
521
"""Create a new line of development from the branch, into to_bzrdir.
1214
to_bzrdir controls the branch format.
1216
523
revision_id: if not None, the revision history in the new branch will
1217
524
be truncated to end with revision_id.
1219
if (repository_policy is not None and
1220
repository_policy.requires_stacking()):
1221
to_bzrdir._format.require_stacking(_skip_repo=True)
1222
result = to_bzrdir.create_branch()
1225
if repository_policy is not None:
1226
repository_policy.configure_branch(result)
1227
self.copy_content_into(result, revision_id=revision_id)
1228
result.set_parent(self.bzrdir.root_transport.base)
526
result = self._format.initialize(to_bzrdir)
527
self.copy_content_into(result, revision_id=revision_id)
528
result.set_parent(self.bzrdir.root_transport.base)
1233
def _synchronize_history(self, destination, revision_id):
1234
"""Synchronize last revision and revision history between branches.
1236
This version is most efficient when the destination is also a
1237
BzrBranch6, but works for BzrBranch5, as long as the destination's
1238
repository contains all the lefthand ancestors of the intended
1239
last_revision. If not, set_last_revision_info will fail.
1241
:param destination: The branch to copy the history into
1242
:param revision_id: The revision-id to truncate history at. May
1243
be None to copy complete history.
1245
source_revno, source_revision_id = self.last_revision_info()
1246
if revision_id is None:
1247
revno, revision_id = source_revno, source_revision_id
1249
graph = self.repository.get_graph()
1251
revno = graph.find_distance_to_null(revision_id,
1252
[(source_revision_id, source_revno)])
1253
except errors.GhostRevisionsHaveNoRevno:
1254
# Default to 1, if we can't find anything else
1256
destination.set_last_revision_info(revno, revision_id)
1258
531
@needs_read_lock
1259
532
def copy_content_into(self, destination, revision_id=None):
1260
533
"""Copy the content of self into destination.
1273
552
destination.set_parent(parent)
1274
if self._push_should_merge_tags():
1275
self.tags.merge_to(destination.tags)
1277
def update_references(self, target):
1278
if not getattr(self._format, 'supports_reference_locations', False):
1280
reference_dict = self._get_all_reference_info()
1281
if len(reference_dict) == 0:
1283
old_base = self.base
1284
new_base = target.base
1285
target_reference_dict = target._get_all_reference_info()
1286
for file_id, (tree_path, branch_location) in (
1287
reference_dict.items()):
1288
branch_location = urlutils.rebase_url(branch_location,
1290
target_reference_dict.setdefault(
1291
file_id, (tree_path, branch_location))
1292
target._set_all_reference_info(target_reference_dict)
1294
554
@needs_read_lock
1295
def check(self, refs):
1296
556
"""Check consistency of the branch.
1298
558
In particular this checks that revisions given in the revision-history
1299
do actually match up in the revision graph, and that they're all
559
do actually match up in the revision graph, and that they're all
1300
560
present in the repository.
1302
562
Callers will typically also want to check the repository.
1304
:param refs: Calculated refs for this branch as specified by
1305
branch._get_check_refs()
1306
564
:return: A BranchCheckResult.
1308
result = BranchCheckResult(self)
1309
last_revno, last_revision_id = self.last_revision_info()
1310
actual_revno = refs[('lefthand-distance', last_revision_id)]
1311
if actual_revno != last_revno:
1312
result.errors.append(errors.BzrCheckError(
1313
'revno does not match len(mainline) %s != %s' % (
1314
last_revno, actual_revno)))
1315
# TODO: We should probably also check that self.revision_history
1316
# matches the repository for older branch formats.
1317
# If looking for the code that cross-checks repository parents against
1318
# the iter_reverse_revision_history output, that is now a repository
566
mainline_parent_id = None
567
for revision_id in self.revision_history():
569
revision = self.repository.get_revision(revision_id)
570
except errors.NoSuchRevision, e:
571
raise errors.BzrCheckError("mainline revision {%s} not in repository"
573
# In general the first entry on the revision history has no parents.
574
# But it's not illegal for it to have parents listed; this can happen
575
# in imports from Arch when the parents weren't reachable.
576
if mainline_parent_id is not None:
577
if mainline_parent_id not in revision.parent_ids:
578
raise errors.BzrCheckError("previous revision {%s} not listed among "
580
% (mainline_parent_id, revision_id))
581
mainline_parent_id = revision_id
582
return BranchCheckResult(self)
1322
584
def _get_checkout_format(self):
1323
585
"""Return the most suitable metadir for a checkout of this branch.
1324
Weaves are used if this branch's repository uses weaves.
586
Weaves are used if this branch's repostory uses weaves.
1326
588
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1327
from bzrlib.repofmt import weaverepo
589
from bzrlib import repository
1328
590
format = bzrdir.BzrDirMetaFormat1()
1329
format.repository_format = weaverepo.RepositoryFormat7()
591
format.repository_format = repository.RepositoryFormat7()
1331
format = self.repository.bzrdir.checkout_metadir()
1332
format.set_branch_format(self._format)
593
format = self.repository.bzrdir.cloning_metadir()
1335
def create_clone_on_transport(self, to_transport, revision_id=None,
1336
stacked_on=None, create_prefix=False, use_existing_dir=False):
1337
"""Create a clone of this branch and its bzrdir.
1339
:param to_transport: The transport to clone onto.
1340
:param revision_id: The revision id to use as tip in the new branch.
1341
If None the tip is obtained from this branch.
1342
:param stacked_on: An optional URL to stack the clone on.
1343
:param create_prefix: Create any missing directories leading up to
1345
:param use_existing_dir: Use an existing directory if one exists.
1347
# XXX: Fix the bzrdir API to allow getting the branch back from the
1348
# clone call. Or something. 20090224 RBC/spiv.
1349
if revision_id is None:
1350
revision_id = self.last_revision()
1351
dir_to = self.bzrdir.clone_on_transport(to_transport,
1352
revision_id=revision_id, stacked_on=stacked_on,
1353
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1354
return dir_to.open_branch()
1356
def create_checkout(self, to_location, revision_id=None,
1357
lightweight=False, accelerator_tree=None,
596
def create_checkout(self, to_location, revision_id=None,
1359
598
"""Create a checkout of a branch.
1361
600
:param to_location: The url to produce the checkout at
1362
601
:param revision_id: The revision to check out
1363
602
:param lightweight: If True, produce a lightweight checkout, otherwise,
1364
603
produce a bound branch (heavyweight checkout)
1365
:param accelerator_tree: A tree which can be used for retrieving file
1366
contents more quickly than the revision tree, i.e. a workingtree.
1367
The revision tree will be used for cases where accelerator_tree's
1368
content is different.
1369
:param hardlink: If true, hard-link files from accelerator_tree,
1371
604
:return: The tree of the created checkout
1373
606
t = transport.get_transport(to_location)
609
except errors.FileExists:
1376
format = self._get_checkout_format()
1377
checkout = format.initialize_on_transport(t)
1378
from_branch = BranchReferenceFormat().initialize(checkout,
612
checkout = bzrdir.BzrDirMetaFormat1().initialize_on_transport(t)
613
BranchReferenceFormat().initialize(checkout, self)
1381
615
format = self._get_checkout_format()
1382
616
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1383
617
to_location, force_new_tree=False, format=format)
1384
618
checkout = checkout_branch.bzrdir
1385
619
checkout_branch.bind(self)
1386
# pull up to the specified revision_id to set the initial
620
# pull up to the specified revision_id to set the initial
1387
621
# branch tip correctly, and seed it with history.
1388
622
checkout_branch.pull(self, stop_revision=revision_id)
1390
tree = checkout.create_workingtree(revision_id,
1391
from_branch=from_branch,
1392
accelerator_tree=accelerator_tree,
1394
basis_tree = tree.basis_tree()
1395
basis_tree.lock_read()
1397
for path, file_id in basis_tree.iter_references():
1398
reference_parent = self.reference_parent(file_id, path)
1399
reference_parent.create_checkout(tree.abspath(path),
1400
basis_tree.get_reference_revision(file_id, path),
1407
def reconcile(self, thorough=True):
1408
"""Make sure the data stored in this branch is consistent."""
1409
from bzrlib.reconcile import BranchReconciler
1410
reconciler = BranchReconciler(self, thorough=thorough)
1411
reconciler.reconcile()
1414
def reference_parent(self, file_id, path, possible_transports=None):
1415
"""Return the parent branch for a tree-reference file_id
1416
:param file_id: The file_id of the tree reference
1417
:param path: The path of the file_id in the tree
1418
:return: A branch associated with the file_id
1420
# FIXME should provide multiple branches, based on config
1421
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1422
possible_transports=possible_transports)
1424
def supports_tags(self):
1425
return self._format.supports_tags()
1427
def automatic_tag_name(self, revision_id):
1428
"""Try to automatically find the tag name for a revision.
1430
:param revision_id: Revision id of the revision.
1431
:return: A tag name or None if no tag name could be determined.
1433
for hook in Branch.hooks['automatic_tag_name']:
1434
ret = hook(self, revision_id)
1439
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1441
"""Ensure that revision_b is a descendant of revision_a.
1443
This is a helper function for update_revisions.
1445
:raises: DivergedBranches if revision_b has diverged from revision_a.
1446
:returns: True if revision_b is a descendant of revision_a.
1448
relation = self._revision_relations(revision_a, revision_b, graph)
1449
if relation == 'b_descends_from_a':
1451
elif relation == 'diverged':
1452
raise errors.DivergedBranches(self, other_branch)
1453
elif relation == 'a_descends_from_b':
1456
raise AssertionError("invalid relation: %r" % (relation,))
1458
def _revision_relations(self, revision_a, revision_b, graph):
1459
"""Determine the relationship between two revisions.
1461
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1463
heads = graph.heads([revision_a, revision_b])
1464
if heads == set([revision_b]):
1465
return 'b_descends_from_a'
1466
elif heads == set([revision_a, revision_b]):
1467
# These branches have diverged
1469
elif heads == set([revision_a]):
1470
return 'a_descends_from_b'
1472
raise AssertionError("invalid heads: %r" % (heads,))
623
return checkout.create_workingtree(revision_id)
1475
626
class BranchFormat(object):
1497
648
"""The known formats."""
1499
can_set_append_revisions_only = True
1501
def __eq__(self, other):
1502
return self.__class__ is other.__class__
1504
def __ne__(self, other):
1505
return not (self == other)
1508
def find_format(klass, a_bzrdir, name=None):
651
def find_format(klass, a_bzrdir):
1509
652
"""Return the format for the branch object in a_bzrdir."""
1511
transport = a_bzrdir.get_branch_transport(None, name=name)
1512
format_string = transport.get_bytes("format")
654
transport = a_bzrdir.get_branch_transport(None)
655
format_string = transport.get("format").read()
1513
656
return klass._formats[format_string]
1514
except errors.NoSuchFile:
1515
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
658
raise NotBranchError(path=transport.base)
1516
659
except KeyError:
1517
raise errors.UnknownFormatError(format=format_string, kind='branch')
660
raise errors.UnknownFormatError(format=format_string)
1520
663
def get_default_format(klass):
1521
664
"""Return the current default format."""
1522
665
return klass._default_format
1524
def get_reference(self, a_bzrdir):
1525
"""Get the target reference of the branch in a_bzrdir.
1527
format probing must have been completed before calling
1528
this method - it is assumed that the format of the branch
1529
in a_bzrdir is correct.
1531
:param a_bzrdir: The bzrdir to get the branch data from.
1532
:return: None if the branch is not a reference branch.
1537
def set_reference(self, a_bzrdir, to_branch):
1538
"""Set the target reference of the branch in a_bzrdir.
1540
format probing must have been completed before calling
1541
this method - it is assumed that the format of the branch
1542
in a_bzrdir is correct.
1544
:param a_bzrdir: The bzrdir to set the branch reference for.
1545
:param to_branch: branch that the checkout is to reference
1547
raise NotImplementedError(self.set_reference)
1549
667
def get_format_string(self):
1550
668
"""Return the ASCII format string that identifies this format."""
1551
669
raise NotImplementedError(self.get_format_string)
1553
671
def get_format_description(self):
1554
672
"""Return the short format description for this format."""
1555
raise NotImplementedError(self.get_format_description)
1557
def _run_post_branch_init_hooks(self, a_bzrdir, name, branch):
1558
hooks = Branch.hooks['post_branch_init']
1561
params = BranchInitHookParams(self, a_bzrdir, name, branch)
1565
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1566
lock_type='metadir', set_format=True):
1567
"""Initialize a branch in a bzrdir, with specified files
1569
:param a_bzrdir: The bzrdir to initialize the branch in
1570
:param utf8_files: The files to create as a list of
1571
(filename, content) tuples
1572
:param name: Name of colocated branch to create, if any
1573
:param set_format: If True, set the format with
1574
self.get_format_string. (BzrBranch4 has its format set
1576
:return: a branch in this format
1578
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1579
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1581
'metadir': ('lock', lockdir.LockDir),
1582
'branch4': ('branch-lock', lockable_files.TransportLock),
1584
lock_name, lock_class = lock_map[lock_type]
1585
control_files = lockable_files.LockableFiles(branch_transport,
1586
lock_name, lock_class)
1587
control_files.create_lock()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
1597
utf8_files += [('format', self.get_format_string())]
1599
for (filename, content) in utf8_files:
1600
branch_transport.put_bytes(
1602
mode=a_bzrdir._get_file_mode())
1605
control_files.unlock()
1606
branch = self.open(a_bzrdir, name, _found=True)
1607
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1610
def initialize(self, a_bzrdir, name=None):
1611
"""Create a branch of this format in a_bzrdir.
1613
:param name: Name of the colocated branch to create.
673
raise NotImplementedError(self.get_format_string)
675
def initialize(self, a_bzrdir):
676
"""Create a branch of this format in a_bzrdir."""
1615
677
raise NotImplementedError(self.initialize)
1617
679
def is_supported(self):
1618
680
"""Is this format supported?
1620
682
Supported formats can be initialized and opened.
1621
Unsupported formats may not support initialization or committing or
683
Unsupported formats may not support initialization or committing or
1622
684
some other features depending on the reason for not being supported.
1626
def make_tags(self, branch):
1627
"""Create a tags object for branch.
1629
This method is on BranchFormat, because BranchFormats are reflected
1630
over the wire via network_name(), whereas full Branch instances require
1631
multiple VFS method calls to operate at all.
1633
The default implementation returns a disabled-tags instance.
1635
Note that it is normal for branch to be a RemoteBranch when using tags
1638
return DisabledTags(branch)
1640
def network_name(self):
1641
"""A simple byte string uniquely identifying this format for RPC calls.
1643
MetaDir branch formats use their disk format string to identify the
1644
repository over the wire. All in one formats such as bzr < 0.8, and
1645
foreign formats like svn/git and hg should use some marker which is
1646
unique and immutable.
1648
raise NotImplementedError(self.network_name)
1650
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
688
def open(self, a_bzrdir, _found=False):
1651
689
"""Return the branch object for a_bzrdir
1653
:param a_bzrdir: A BzrDir that contains a branch.
1654
:param name: Name of colocated branch to open
1655
:param _found: a private parameter, do not use it. It is used to
1656
indicate if format probing has already be done.
1657
:param ignore_fallbacks: when set, no fallback branches will be opened
1658
(if there are any). Default is to open fallbacks.
691
_found is a private parameter, do not use it. It is used to indicate
692
if format probing has already be done.
1660
694
raise NotImplementedError(self.open)
1663
697
def register_format(klass, format):
1664
"""Register a metadir format."""
1665
698
klass._formats[format.get_format_string()] = format
1666
# Metadir formats have a network name of their format string, and get
1667
# registered as class factories.
1668
network_format_registry.register(format.get_format_string(), format.__class__)
1671
701
def set_default_format(klass, format):
1672
702
klass._default_format = format
1674
def supports_set_append_revisions_only(self):
1675
"""True if this format supports set_append_revisions_only."""
1678
def supports_stacking(self):
1679
"""True if this format records a stacked-on branch."""
1683
705
def unregister_format(klass, format):
706
assert klass._formats[format.get_format_string()] is format
1684
707
del klass._formats[format.get_format_string()]
1686
709
def __str__(self):
1687
return self.get_format_description().rstrip()
1689
def supports_tags(self):
1690
"""True if this format supports tags stored in the branch"""
1691
return False # by default
1694
class BranchHooks(Hooks):
1695
"""A dictionary mapping hook name to a list of callables for branch hooks.
1697
e.g. ['set_rh'] Is the list of items to be called when the
1698
set_revision_history function is invoked.
1702
"""Create the default hooks.
1704
These are all empty initially, because by default nothing should get
1707
Hooks.__init__(self)
1708
self.create_hook(HookPoint('set_rh',
1709
"Invoked whenever the revision history has been set via "
1710
"set_revision_history. The api signature is (branch, "
1711
"revision_history), and the branch will be write-locked. "
1712
"The set_rh hook can be expensive for bzr to trigger, a better "
1713
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1714
self.create_hook(HookPoint('open',
1715
"Called with the Branch object that has been opened after a "
1716
"branch is opened.", (1, 8), None))
1717
self.create_hook(HookPoint('post_push',
1718
"Called after a push operation completes. post_push is called "
1719
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1720
"bzr client.", (0, 15), None))
1721
self.create_hook(HookPoint('post_pull',
1722
"Called after a pull operation completes. post_pull is called "
1723
"with a bzrlib.branch.PullResult object and only runs in the "
1724
"bzr client.", (0, 15), None))
1725
self.create_hook(HookPoint('pre_commit',
1726
"Called after a commit is calculated but before it is is "
1727
"completed. pre_commit is called with (local, master, old_revno, "
1728
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1729
"). old_revid is NULL_REVISION for the first commit to a branch, "
1730
"tree_delta is a TreeDelta object describing changes from the "
1731
"basis revision. hooks MUST NOT modify this delta. "
1732
" future_tree is an in-memory tree obtained from "
1733
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1736
"Called in the bzr client after a commit has completed. "
1737
"post_commit is called with (local, master, old_revno, old_revid, "
1738
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1739
"commit to a branch.", (0, 15), None))
1740
self.create_hook(HookPoint('post_uncommit',
1741
"Called in the bzr client after an uncommit completes. "
1742
"post_uncommit is called with (local, master, old_revno, "
1743
"old_revid, new_revno, new_revid) where local is the local branch "
1744
"or None, master is the target branch, and an empty branch "
1745
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1746
self.create_hook(HookPoint('pre_change_branch_tip',
1747
"Called in bzr client and server before a change to the tip of a "
1748
"branch is made. pre_change_branch_tip is called with a "
1749
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1750
"commit, uncommit will all trigger this hook.", (1, 6), None))
1751
self.create_hook(HookPoint('post_change_branch_tip',
1752
"Called in bzr client and server after a change to the tip of a "
1753
"branch is made. post_change_branch_tip is called with a "
1754
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1755
"commit, uncommit will all trigger this hook.", (1, 4), None))
1756
self.create_hook(HookPoint('transform_fallback_location',
1757
"Called when a stacked branch is activating its fallback "
1758
"locations. transform_fallback_location is called with (branch, "
1759
"url), and should return a new url. Returning the same url "
1760
"allows it to be used as-is, returning a different one can be "
1761
"used to cause the branch to stack on a closer copy of that "
1762
"fallback_location. Note that the branch cannot have history "
1763
"accessing methods called on it during this hook because the "
1764
"fallback locations have not been activated. When there are "
1765
"multiple hooks installed for transform_fallback_location, "
1766
"all are called with the url returned from the previous hook."
1767
"The order is however undefined.", (1, 9), None))
1768
self.create_hook(HookPoint('automatic_tag_name',
1769
"Called to determine an automatic tag name for a revision."
1770
"automatic_tag_name is called with (branch, revision_id) and "
1771
"should return a tag name or None if no tag name could be "
1772
"determined. The first non-None tag name returned will be used.",
1774
self.create_hook(HookPoint('post_branch_init',
1775
"Called after new branch initialization completes. "
1776
"post_branch_init is called with a "
1777
"bzrlib.branch.BranchInitHookParams. "
1778
"Note that init, branch and checkout (both heavyweight and "
1779
"lightweight) will all trigger this hook.", (2, 2), None))
1780
self.create_hook(HookPoint('post_switch',
1781
"Called after a checkout switches branch. "
1782
"post_switch is called with a "
1783
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1787
# install the default hooks into the Branch class.
1788
Branch.hooks = BranchHooks()
1791
class ChangeBranchTipParams(object):
1792
"""Object holding parameters passed to *_change_branch_tip hooks.
1794
There are 5 fields that hooks may wish to access:
1796
:ivar branch: the branch being changed
1797
:ivar old_revno: revision number before the change
1798
:ivar new_revno: revision number after the change
1799
:ivar old_revid: revision id before the change
1800
:ivar new_revid: revision id after the change
1802
The revid fields are strings. The revno fields are integers.
1805
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1806
"""Create a group of ChangeBranchTip parameters.
1808
:param branch: The branch being changed.
1809
:param old_revno: Revision number before the change.
1810
:param new_revno: Revision number after the change.
1811
:param old_revid: Tip revision id before the change.
1812
:param new_revid: Tip revision id after the change.
1814
self.branch = branch
1815
self.old_revno = old_revno
1816
self.new_revno = new_revno
1817
self.old_revid = old_revid
1818
self.new_revid = new_revid
1820
def __eq__(self, other):
1821
return self.__dict__ == other.__dict__
1824
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1825
self.__class__.__name__, self.branch,
1826
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1829
class BranchInitHookParams(object):
1830
"""Object holding parameters passed to *_branch_init hooks.
1832
There are 4 fields that hooks may wish to access:
1834
:ivar format: the branch format
1835
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1836
:ivar name: name of colocated branch, if any (or None)
1837
:ivar branch: the branch created
1839
Note that for lightweight checkouts, the bzrdir and format fields refer to
1840
the checkout, hence they are different from the corresponding fields in
1841
branch, which refer to the original branch.
1844
def __init__(self, format, a_bzrdir, name, branch):
1845
"""Create a group of BranchInitHook parameters.
1847
:param format: the branch format
1848
:param a_bzrdir: the BzrDir where the branch will be/has been
1850
:param name: name of colocated branch, if any (or None)
1851
:param branch: the branch created
1853
Note that for lightweight checkouts, the bzrdir and format fields refer
1854
to the checkout, hence they are different from the corresponding fields
1855
in branch, which refer to the original branch.
1857
self.format = format
1858
self.bzrdir = a_bzrdir
1860
self.branch = branch
1862
def __eq__(self, other):
1863
return self.__dict__ == other.__dict__
1867
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1869
return "<%s of format:%s bzrdir:%s>" % (
1870
self.__class__.__name__, self.branch,
1871
self.format, self.bzrdir)
1874
class SwitchHookParams(object):
1875
"""Object holding parameters passed to *_switch hooks.
1877
There are 4 fields that hooks may wish to access:
1879
:ivar control_dir: BzrDir of the checkout to change
1880
:ivar to_branch: branch that the checkout is to reference
1881
:ivar force: skip the check for local commits in a heavy checkout
1882
:ivar revision_id: revision ID to switch to (or None)
1885
def __init__(self, control_dir, to_branch, force, revision_id):
1886
"""Create a group of SwitchHook parameters.
1888
:param control_dir: BzrDir of the checkout to change
1889
:param to_branch: branch that the checkout is to reference
1890
:param force: skip the check for local commits in a heavy checkout
1891
:param revision_id: revision ID to switch to (or None)
1893
self.control_dir = control_dir
1894
self.to_branch = to_branch
1896
self.revision_id = revision_id
1898
def __eq__(self, other):
1899
return self.__dict__ == other.__dict__
1902
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1903
self.control_dir, self.to_branch,
710
return self.get_format_string().rstrip()
1907
713
class BzrBranchFormat4(BranchFormat):
1916
722
"""See BranchFormat.get_format_description()."""
1917
723
return "Branch format 4"
1919
def initialize(self, a_bzrdir, name=None):
725
def initialize(self, a_bzrdir):
1920
726
"""Create a branch of this format in a_bzrdir."""
727
mutter('creating branch in %s', a_bzrdir.transport.base)
728
branch_transport = a_bzrdir.get_branch_transport(self)
1921
729
utf8_files = [('revision-history', ''),
1922
730
('branch-name', ''),
1924
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1925
lock_type='branch4', set_format=False)
732
control_files = LockableFiles(branch_transport, 'branch-lock',
734
control_files.create_lock()
735
control_files.lock_write()
737
for file, content in utf8_files:
738
control_files.put_utf8(file, content)
740
control_files.unlock()
741
return self.open(a_bzrdir, _found=True)
1927
743
def __init__(self):
1928
744
super(BzrBranchFormat4, self).__init__()
1929
745
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1931
def network_name(self):
1932
"""The network name for this format is the control dirs disk label."""
1933
return self._matchingbzrdir.get_format_string()
747
def open(self, a_bzrdir, _found=False):
748
"""Return the branch object for a_bzrdir
1935
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1936
"""See BranchFormat.open()."""
750
_found is a private parameter, do not use it. It is used to indicate
751
if format probing has already be done.
1938
754
# we are being called directly and must probe.
1939
755
raise NotImplementedError
1940
756
return BzrBranch(_format=self,
1941
757
_control_files=a_bzrdir._control_files,
1942
758
a_bzrdir=a_bzrdir,
1944
759
_repository=a_bzrdir.open_repository())
1946
761
def __str__(self):
1947
762
return "Bazaar-NG branch format 4"
1950
class BranchFormatMetadir(BranchFormat):
1951
"""Common logic for meta-dir based branch formats."""
1953
def _branch_class(self):
1954
"""What class to instantiate on open calls."""
1955
raise NotImplementedError(self._branch_class)
1957
def network_name(self):
1958
"""A simple byte string uniquely identifying this format for RPC calls.
1960
Metadir branch formats use their format string.
1962
return self.get_format_string()
1964
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1965
"""See BranchFormat.open()."""
1967
format = BranchFormat.find_format(a_bzrdir, name=name)
1968
if format.__class__ != self.__class__:
1969
raise AssertionError("wrong format %r found for %r" %
1971
transport = a_bzrdir.get_branch_transport(None, name=name)
1973
control_files = lockable_files.LockableFiles(transport, 'lock',
1975
return self._branch_class()(_format=self,
1976
_control_files=control_files,
1979
_repository=a_bzrdir.find_repository(),
1980
ignore_fallbacks=ignore_fallbacks)
1981
except errors.NoSuchFile:
1982
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1985
super(BranchFormatMetadir, self).__init__()
1986
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1987
self._matchingbzrdir.set_branch_format(self)
1989
def supports_tags(self):
1993
class BzrBranchFormat5(BranchFormatMetadir):
765
class BzrBranchFormat5(BranchFormat):
1994
766
"""Bzr branch format 5.
1996
768
This format has:
2013
782
def get_format_description(self):
2014
783
"""See BranchFormat.get_format_description()."""
2015
784
return "Branch format 5"
2017
def initialize(self, a_bzrdir, name=None):
786
def initialize(self, a_bzrdir):
2018
787
"""Create a branch of this format in a_bzrdir."""
788
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
789
branch_transport = a_bzrdir.get_branch_transport(self)
2019
790
utf8_files = [('revision-history', ''),
2020
791
('branch-name', ''),
2022
return self._initialize_helper(a_bzrdir, utf8_files, name)
2024
def supports_tags(self):
2028
class BzrBranchFormat6(BranchFormatMetadir):
2029
"""Branch format with last-revision and tags.
2031
Unlike previous formats, this has no explicit revision history. Instead,
2032
this just stores the last-revision, and the left-hand history leading
2033
up to there is the history.
2035
This format was introduced in bzr 0.15
2036
and became the default in 0.91.
2039
def _branch_class(self):
2042
def get_format_string(self):
2043
"""See BranchFormat.get_format_string()."""
2044
return "Bazaar Branch Format 6 (bzr 0.15)\n"
2046
def get_format_description(self):
2047
"""See BranchFormat.get_format_description()."""
2048
return "Branch format 6"
2050
def initialize(self, a_bzrdir, name=None):
2051
"""Create a branch of this format in a_bzrdir."""
2052
utf8_files = [('last-revision', '0 null:\n'),
2053
('branch.conf', ''),
2056
return self._initialize_helper(a_bzrdir, utf8_files, name)
2058
def make_tags(self, branch):
2059
"""See bzrlib.branch.BranchFormat.make_tags()."""
2060
return BasicTags(branch)
2062
def supports_set_append_revisions_only(self):
2066
class BzrBranchFormat8(BranchFormatMetadir):
2067
"""Metadir format supporting storing locations of subtree branches."""
2069
def _branch_class(self):
2072
def get_format_string(self):
2073
"""See BranchFormat.get_format_string()."""
2074
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2076
def get_format_description(self):
2077
"""See BranchFormat.get_format_description()."""
2078
return "Branch format 8"
2080
def initialize(self, a_bzrdir, name=None):
2081
"""Create a branch of this format in a_bzrdir."""
2082
utf8_files = [('last-revision', '0 null:\n'),
2083
('branch.conf', ''),
2087
return self._initialize_helper(a_bzrdir, utf8_files, name)
793
control_files = LockableFiles(branch_transport, 'lock', lockdir.LockDir)
794
control_files.create_lock()
795
control_files.lock_write()
796
control_files.put_utf8('format', self.get_format_string())
798
for file, content in utf8_files:
799
control_files.put_utf8(file, content)
801
control_files.unlock()
802
return self.open(a_bzrdir, _found=True, )
2089
804
def __init__(self):
2090
super(BzrBranchFormat8, self).__init__()
2091
self._matchingbzrdir.repository_format = \
2092
RepositoryFormatKnitPack5RichRoot()
2094
def make_tags(self, branch):
2095
"""See bzrlib.branch.BranchFormat.make_tags()."""
2096
return BasicTags(branch)
2098
def supports_set_append_revisions_only(self):
2101
def supports_stacking(self):
2104
supports_reference_locations = True
2107
class BzrBranchFormat7(BzrBranchFormat8):
2108
"""Branch format with last-revision, tags, and a stacked location pointer.
2110
The stacked location pointer is passed down to the repository and requires
2111
a repository format with supports_external_lookups = True.
2113
This format was introduced in bzr 1.6.
2116
def initialize(self, a_bzrdir, name=None):
2117
"""Create a branch of this format in a_bzrdir."""
2118
utf8_files = [('last-revision', '0 null:\n'),
2119
('branch.conf', ''),
2122
return self._initialize_helper(a_bzrdir, utf8_files, name)
2124
def _branch_class(self):
2127
def get_format_string(self):
2128
"""See BranchFormat.get_format_string()."""
2129
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2131
def get_format_description(self):
2132
"""See BranchFormat.get_format_description()."""
2133
return "Branch format 7"
2135
def supports_set_append_revisions_only(self):
2138
supports_reference_locations = False
805
super(BzrBranchFormat5, self).__init__()
806
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
808
def open(self, a_bzrdir, _found=False):
809
"""Return the branch object for a_bzrdir
811
_found is a private parameter, do not use it. It is used to indicate
812
if format probing has already be done.
815
format = BranchFormat.find_format(a_bzrdir)
816
assert format.__class__ == self.__class__
817
transport = a_bzrdir.get_branch_transport(None)
818
control_files = LockableFiles(transport, 'lock', lockdir.LockDir)
819
return BzrBranch5(_format=self,
820
_control_files=control_files,
822
_repository=a_bzrdir.find_repository())
825
return "Bazaar-NG Metadir branch format 5"
2141
828
class BranchReferenceFormat(BranchFormat):
2156
843
def get_format_description(self):
2157
844
"""See BranchFormat.get_format_description()."""
2158
845
return "Checkout reference format 1"
2160
def get_reference(self, a_bzrdir):
2161
"""See BranchFormat.get_reference()."""
2162
transport = a_bzrdir.get_branch_transport(None)
2163
return transport.get_bytes('location')
2165
def set_reference(self, a_bzrdir, to_branch):
2166
"""See BranchFormat.set_reference()."""
2167
transport = a_bzrdir.get_branch_transport(None)
2168
location = transport.put_bytes('location', to_branch.base)
2170
def initialize(self, a_bzrdir, name=None, target_branch=None):
847
def initialize(self, a_bzrdir, target_branch=None):
2171
848
"""Create a branch of this format in a_bzrdir."""
2172
849
if target_branch is None:
2173
850
# this format does not implement branch itself, thus the implicit
2174
851
# creation contract must see it as uninitializable
2175
852
raise errors.UninitializableFormat(self)
2176
mutter('creating branch reference in %s', a_bzrdir.user_url)
2177
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
853
mutter('creating branch reference in %s', a_bzrdir.transport.base)
854
branch_transport = a_bzrdir.get_branch_transport(self)
2178
855
branch_transport.put_bytes('location',
2179
target_branch.bzrdir.user_url)
856
target_branch.bzrdir.root_transport.base)
2180
857
branch_transport.put_bytes('format', self.get_format_string())
2182
a_bzrdir, name, _found=True,
2183
possible_transports=[target_branch.bzrdir.root_transport])
2184
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
858
return self.open(a_bzrdir, _found=True)
2187
860
def __init__(self):
2188
861
super(BranchReferenceFormat, self).__init__()
2189
862
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2190
self._matchingbzrdir.set_branch_format(self)
2192
864
def _make_reference_clone_function(format, a_branch):
2193
865
"""Create a clone() routine for a branch dynamically."""
2194
def clone(to_bzrdir, revision_id=None,
2195
repository_policy=None):
866
def clone(to_bzrdir, revision_id=None):
2196
867
"""See Branch.clone()."""
2197
return format.initialize(to_bzrdir, target_branch=a_branch)
868
return format.initialize(to_bzrdir, a_branch)
2198
869
# cannot obey revision_id limits when cloning a reference ...
2199
870
# FIXME RBC 20060210 either nuke revision_id for clone, or
2200
871
# emit some sort of warning/error to the caller ?!
2203
def open(self, a_bzrdir, name=None, _found=False, location=None,
2204
possible_transports=None, ignore_fallbacks=False):
874
def open(self, a_bzrdir, _found=False):
2205
875
"""Return the branch that the branch reference in a_bzrdir points at.
2207
:param a_bzrdir: A BzrDir that contains a branch.
2208
:param name: Name of colocated branch to open, if any
2209
:param _found: a private parameter, do not use it. It is used to
2210
indicate if format probing has already be done.
2211
:param ignore_fallbacks: when set, no fallback branches will be opened
2212
(if there are any). Default is to open fallbacks.
2213
:param location: The location of the referenced branch. If
2214
unspecified, this will be determined from the branch reference in
2216
:param possible_transports: An optional reusable transports list.
877
_found is a private parameter, do not use it. It is used to indicate
878
if format probing has already be done.
2219
format = BranchFormat.find_format(a_bzrdir, name=name)
2220
if format.__class__ != self.__class__:
2221
raise AssertionError("wrong format %r found for %r" %
2223
if location is None:
2224
location = self.get_reference(a_bzrdir)
2225
real_bzrdir = bzrdir.BzrDir.open(
2226
location, possible_transports=possible_transports)
2227
result = real_bzrdir.open_branch(name=name,
2228
ignore_fallbacks=ignore_fallbacks)
881
format = BranchFormat.find_format(a_bzrdir)
882
assert format.__class__ == self.__class__
883
transport = a_bzrdir.get_branch_transport(None)
884
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
885
result = real_bzrdir.open_branch()
2229
886
# this changes the behaviour of result.clone to create a new reference
2230
887
# rather than a copy of the content of the branch.
2231
888
# I did not use a proxy object because that needs much more extensive
2241
network_format_registry = registry.FormatRegistry()
2242
"""Registry of formats indexed by their network name.
2244
The network name for a branch format is an identifier that can be used when
2245
referring to formats with smart server operations. See
2246
BranchFormat.network_name() for more detail.
2250
898
# formats which have no format string are not discoverable
2251
899
# and not independently creatable, so are not registered.
2252
__format5 = BzrBranchFormat5()
2253
__format6 = BzrBranchFormat6()
2254
__format7 = BzrBranchFormat7()
2255
__format8 = BzrBranchFormat8()
2256
BranchFormat.register_format(__format5)
900
__default_format = BzrBranchFormat5()
901
BranchFormat.register_format(__default_format)
2257
902
BranchFormat.register_format(BranchReferenceFormat())
2258
BranchFormat.register_format(__format6)
2259
BranchFormat.register_format(__format7)
2260
BranchFormat.register_format(__format8)
2261
BranchFormat.set_default_format(__format7)
903
BranchFormat.set_default_format(__default_format)
2262
904
_legacy_formats = [BzrBranchFormat4(),
2264
network_format_registry.register(
2265
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2268
class BzrBranch(Branch, _RelockDebugMixin):
907
class BzrBranch(Branch):
2269
908
"""A branch stored in the actual filesystem.
2271
910
Note that it's "local" in the context of the filesystem; it doesn't
2272
911
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2273
912
it's writable, and can be accessed via the normal filesystem API.
2275
:ivar _transport: Transport for file operations on this branch's
2276
control files, typically pointing to the .bzr/branch directory.
2277
:ivar repository: Repository for this branch.
2278
:ivar base: The url of the base directory for this branch; the one
2279
containing the .bzr directory.
2280
:ivar name: Optional colocated branch name as it exists in the control
2284
def __init__(self, _format=None,
2285
_control_files=None, a_bzrdir=None, name=None,
2286
_repository=None, ignore_fallbacks=False):
2287
"""Create new branch object at a particular location."""
915
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
916
relax_version_check=DEPRECATED_PARAMETER, _format=None,
917
_control_files=None, a_bzrdir=None, _repository=None):
918
"""Create new branch object at a particular location.
920
transport -- A Transport object, defining how to access files.
922
init -- If True, create new control files in a previously
923
unversioned directory. If False, the branch must already
926
relax_version_check -- If true, the usual check for the branch
927
version is not applied. This is intended only for
928
upgrade/recovery type use; it's not guaranteed that
929
all operations will work on old format branches.
2288
931
if a_bzrdir is None:
2289
raise ValueError('a_bzrdir must be supplied')
932
self.bzrdir = bzrdir.BzrDir.open(transport.base)
2291
934
self.bzrdir = a_bzrdir
2292
self._base = self.bzrdir.transport.clone('..').base
2294
# XXX: We should be able to just do
2295
# self.base = self.bzrdir.root_transport.base
2296
# but this does not quite work yet -- mbp 20080522
935
self._transport = self.bzrdir.transport.clone('..')
936
self._base = self._transport.base
2297
937
self._format = _format
2298
938
if _control_files is None:
2299
939
raise ValueError('BzrBranch _control_files is None')
2300
940
self.control_files = _control_files
2301
self._transport = _control_files._transport
941
if deprecated_passed(init):
942
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
943
"deprecated as of bzr 0.8. Please use Branch.create().",
947
# this is slower than before deprecation, oh well never mind.
949
self._initialize(transport.base)
950
self._check_format(_format)
951
if deprecated_passed(relax_version_check):
952
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
953
"relax_version_check parameter is deprecated as of bzr 0.8. "
954
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
958
if (not relax_version_check
959
and not self._format.is_supported()):
960
raise errors.UnsupportedFormatError(format=fmt)
961
if deprecated_passed(transport):
962
warn("BzrBranch.__init__(transport=XXX...): The transport "
963
"parameter is deprecated as of bzr 0.8. "
964
"Please use Branch.open, or bzrdir.open_branch().",
2302
967
self.repository = _repository
2303
Branch.__init__(self)
2305
969
def __str__(self):
2306
if self.name is None:
2307
return '%s(%s)' % (self.__class__.__name__, self.user_url)
2309
return '%s(%s,%s)' % (self.__class__.__name__, self.user_url,
970
return '%s(%r)' % (self.__class__.__name__, self.base)
2312
972
__repr__ = __str__
2314
974
def _get_base(self):
2315
"""Returns the directory containing the control directory."""
2316
975
return self._base
2318
977
base = property(_get_base, doc="The URL for the root of this branch.")
2320
def _get_config(self):
2321
return TransportConfig(self._transport, 'branch.conf')
979
def _finish_transaction(self):
980
"""Exit the current transaction."""
981
return self.control_files._finish_transaction()
983
def get_transaction(self):
984
"""Return the current active transaction.
986
If no transaction is active, this returns a passthrough object
987
for which all data is immediately flushed and no caching happens.
989
# this is an explicit function so that we can do tricky stuff
990
# when the storage in rev_storage is elsewhere.
991
# we probably need to hook the two 'lock a location' and
992
# 'have a transaction' together more delicately, so that
993
# we can have two locks (branch and storage) and one transaction
994
# ... and finishing the transaction unlocks both, but unlocking
995
# does not. - RBC 20051121
996
return self.control_files.get_transaction()
998
def _set_transaction(self, transaction):
999
"""Set a new active transaction."""
1000
return self.control_files._set_transaction(transaction)
1002
def abspath(self, name):
1003
"""See Branch.abspath."""
1004
return self.control_files._transport.abspath(name)
1006
def _check_format(self, format):
1007
"""Identify the branch format if needed.
1009
The format is stored as a reference to the format object in
1010
self._format for code that needs to check it later.
1012
The format parameter is either None or the branch format class
1013
used to open this branch.
1015
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
1018
format = BranchFormat.find_format(self.bzrdir)
1019
self._format = format
1020
mutter("got branch format %s", self._format)
1023
def get_root_id(self):
1024
"""See Branch.get_root_id."""
1025
tree = self.repository.revision_tree(self.last_revision())
1026
return tree.inventory.root.file_id
2323
1028
def is_locked(self):
2324
1029
return self.control_files.is_locked()
2326
def lock_write(self, token=None):
2327
if not self.is_locked():
2328
self._note_lock('w')
2329
# All-in-one needs to always unlock/lock.
2330
repo_control = getattr(self.repository, 'control_files', None)
2331
if self.control_files == repo_control or not self.is_locked():
2332
self.repository._warn_if_deprecated(self)
2333
self.repository.lock_write()
1031
def lock_write(self):
1032
self.repository.lock_write()
2338
return self.control_files.lock_write(token=token)
1034
self.control_files.lock_write()
2341
self.repository.unlock()
1036
self.repository.unlock()
2344
1039
def lock_read(self):
2345
if not self.is_locked():
2346
self._note_lock('r')
2347
# All-in-one needs to always unlock/lock.
2348
repo_control = getattr(self.repository, 'control_files', None)
2349
if self.control_files == repo_control or not self.is_locked():
2350
self.repository._warn_if_deprecated(self)
2351
self.repository.lock_read()
1040
self.repository.lock_read()
2356
1042
self.control_files.lock_read()
2359
self.repository.unlock()
1044
self.repository.unlock()
2362
@only_raises(errors.LockNotHeld, errors.LockBroken)
2363
1047
def unlock(self):
1048
# TODO: test for failed two phase locks. This is known broken.
2365
1050
self.control_files.unlock()
2367
# All-in-one needs to always unlock/lock.
2368
repo_control = getattr(self.repository, 'control_files', None)
2369
if (self.control_files == repo_control or
2370
not self.control_files.is_locked()):
2371
self.repository.unlock()
2372
if not self.control_files.is_locked():
2373
# we just released the lock
2374
self._clear_cached_state()
1052
self.repository.unlock()
2376
1054
def peek_lock_mode(self):
2377
1055
if self.control_files._lock_count == 0:
2387
1065
"""See Branch.print_file."""
2388
1066
return self.repository.print_file(file, revision_id)
2390
def _write_revision_history(self, history):
2391
"""Factored out of set_revision_history.
2393
This performs the actual writing to disk.
2394
It is intended to be called by BzrBranch5.set_revision_history."""
2395
self._transport.put_bytes(
2396
'revision-history', '\n'.join(history),
2397
mode=self.bzrdir._get_file_mode())
1069
def append_revision(self, *revision_ids):
1070
"""See Branch.append_revision."""
1071
for revision_id in revision_ids:
1072
mutter("add {%s} to revision-history" % revision_id)
1073
rev_history = self.revision_history()
1074
rev_history.extend(revision_ids)
1075
self.set_revision_history(rev_history)
2399
1077
@needs_write_lock
2400
1078
def set_revision_history(self, rev_history):
2401
1079
"""See Branch.set_revision_history."""
2402
if 'evil' in debug.debug_flags:
2403
mutter_callsite(3, "set_revision_history scales with history.")
2404
check_not_reserved_id = _mod_revision.check_not_reserved_id
2405
for rev_id in rev_history:
2406
check_not_reserved_id(rev_id)
2407
if Branch.hooks['post_change_branch_tip']:
2408
# Don't calculate the last_revision_info() if there are no hooks
2410
old_revno, old_revid = self.last_revision_info()
2411
if len(rev_history) == 0:
2412
revid = _mod_revision.NULL_REVISION
2414
revid = rev_history[-1]
2415
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2416
self._write_revision_history(rev_history)
2417
self._clear_cached_state()
2418
self._cache_revision_history(rev_history)
2419
for hook in Branch.hooks['set_rh']:
2420
hook(self, rev_history)
2421
if Branch.hooks['post_change_branch_tip']:
2422
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2424
def _synchronize_history(self, destination, revision_id):
2425
"""Synchronize last revision and revision history between branches.
2427
This version is most efficient when the destination is also a
2428
BzrBranch5, but works for BzrBranch6 as long as the revision
2429
history is the true lefthand parent history, and all of the revisions
2430
are in the destination's repository. If not, set_revision_history
2433
:param destination: The branch to copy the history into
2434
:param revision_id: The revision-id to truncate history at. May
2435
be None to copy complete history.
2437
if not isinstance(destination._format, BzrBranchFormat5):
2438
super(BzrBranch, self)._synchronize_history(
2439
destination, revision_id)
2441
if revision_id == _mod_revision.NULL_REVISION:
2444
new_history = self.revision_history()
2445
if revision_id is not None and new_history != []:
2447
new_history = new_history[:new_history.index(revision_id) + 1]
2449
rev = self.repository.get_revision(revision_id)
2450
new_history = rev.get_history(self.repository)[1:]
2451
destination.set_revision_history(new_history)
2454
def set_last_revision_info(self, revno, revision_id):
2455
"""Set the last revision of this branch.
2457
The caller is responsible for checking that the revno is correct
2458
for this revision id.
2460
It may be possible to set the branch last revision to an id not
2461
present in the repository. However, branches can also be
2462
configured to check constraints on history, in which case this may not
2465
revision_id = _mod_revision.ensure_null(revision_id)
2466
# this old format stores the full history, but this api doesn't
2467
# provide it, so we must generate, and might as well check it's
2469
history = self._lefthand_history(revision_id)
2470
if len(history) != revno:
2471
raise AssertionError('%d != %d' % (len(history), revno))
2472
self.set_revision_history(history)
2474
def _gen_revision_history(self):
2475
history = self._transport.get_bytes('revision-history').split('\n')
2476
if history[-1:] == ['']:
2477
# There shouldn't be a trailing newline, but just in case.
2482
def generate_revision_history(self, revision_id, last_rev=None,
1080
self.control_files.put_utf8(
1081
'revision-history', '\n'.join(rev_history))
1082
transaction = self.get_transaction()
1083
history = transaction.map.find_revision_history()
1084
if history is not None:
1085
# update the revision history in the identity map.
1086
history[:] = list(rev_history)
1087
# this call is disabled because revision_history is
1088
# not really an object yet, and the transaction is for objects.
1089
# transaction.register_dirty(history)
1091
transaction.map.add_revision_history(rev_history)
1092
# this call is disabled because revision_history is
1093
# not really an object yet, and the transaction is for objects.
1094
# transaction.register_clean(history)
1097
def revision_history(self):
1098
"""See Branch.revision_history."""
1099
transaction = self.get_transaction()
1100
history = transaction.map.find_revision_history()
1101
if history is not None:
1102
# mutter("cache hit for revision-history in %s", self)
1103
return list(history)
1104
decode_utf8 = cache_utf8.decode
1105
history = [decode_utf8(l.rstrip('\r\n')) for l in
1106
self.control_files.get('revision-history').readlines()]
1107
transaction.map.add_revision_history(history)
1108
# this call is disabled because revision_history is
1109
# not really an object yet, and the transaction is for objects.
1110
# transaction.register_clean(history, precious=True)
1111
return list(history)
1114
def generate_revision_history(self, revision_id, last_rev=None,
2483
1115
other_branch=None):
2484
1116
"""Create a new revision history that will finish with revision_id.
2486
1118
:param revision_id: the new tip to use.
2487
1119
:param last_rev: The previous last_revision. If not None, then this
2488
1120
must be a ancestory of revision_id, or DivergedBranches is raised.
2489
1121
:param other_branch: The other branch that DivergedBranches should
2490
1122
raise with respect to.
2492
self.set_revision_history(self._lefthand_history(revision_id,
2493
last_rev, other_branch))
1124
# stop_revision must be a descendant of last_revision
1125
stop_graph = self.repository.get_revision_graph(revision_id)
1126
if last_rev is not None and last_rev not in stop_graph:
1127
# our previous tip is not merged into stop_revision
1128
raise errors.DivergedBranches(self, other_branch)
1129
# make a new revision history from the graph
1130
current_rev_id = revision_id
1132
while current_rev_id not in (None, revision.NULL_REVISION):
1133
new_history.append(current_rev_id)
1134
current_rev_id_parents = stop_graph[current_rev_id]
1136
current_rev_id = current_rev_id_parents[0]
1138
current_rev_id = None
1139
new_history.reverse()
1140
self.set_revision_history(new_history)
1143
def update_revisions(self, other, stop_revision=None):
1144
"""See Branch.update_revisions."""
1147
if stop_revision is None:
1148
stop_revision = other.last_revision()
1149
if stop_revision is None:
1150
# if there are no commits, we're done.
1152
# whats the current last revision, before we fetch [and change it
1154
last_rev = self.last_revision()
1155
# we fetch here regardless of whether we need to so that we pickup
1157
self.fetch(other, stop_revision)
1158
my_ancestry = self.repository.get_ancestry(last_rev)
1159
if stop_revision in my_ancestry:
1160
# last_revision is a descendant of stop_revision
1162
self.generate_revision_history(stop_revision, last_rev=last_rev,
2495
1167
def basis_tree(self):
2496
1168
"""See Branch.basis_tree."""
2497
1169
return self.repository.revision_tree(self.last_revision())
2499
def _get_parent_location(self):
1171
@deprecated_method(zero_eight)
1172
def working_tree(self):
1173
"""Create a Working tree object for this branch."""
1175
from bzrlib.transport.local import LocalTransport
1176
if (self.base.find('://') != -1 or
1177
not isinstance(self._transport, LocalTransport)):
1178
raise NoWorkingTree(self.base)
1179
return self.bzrdir.open_workingtree()
1182
def pull(self, source, overwrite=False, stop_revision=None):
1183
"""See Branch.pull."""
1186
old_count = len(self.revision_history())
1188
self.update_revisions(source, stop_revision)
1189
except DivergedBranches:
1193
self.set_revision_history(source.revision_history())
1194
new_count = len(self.revision_history())
1195
return new_count - old_count
1199
def get_parent(self):
1200
"""See Branch.get_parent."""
2500
1202
_locs = ['parent', 'pull', 'x-pull']
1203
assert self.base[-1] == '/'
2501
1204
for l in _locs:
2503
return self._transport.get_bytes(l).strip('\n')
2504
except errors.NoSuchFile:
1206
parent = self.control_files.get(l).read().strip('\n')
1209
# This is an old-format absolute path to a local branch
1210
# turn it into a url
1211
if parent.startswith('/'):
1212
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1214
return urlutils.join(self.base[:-1], parent)
1215
except errors.InvalidURLJoin, e:
1216
raise errors.InaccessibleParent(parent, self.base)
2508
def _basic_push(self, target, overwrite, stop_revision):
2509
"""Basic implementation of push without bound branches or hooks.
2511
Must be called with source read locked and target write locked.
2513
result = BranchPushResult()
2514
result.source_branch = self
2515
result.target_branch = target
2516
result.old_revno, result.old_revid = target.last_revision_info()
2517
self.update_references(target)
2518
if result.old_revid != self.last_revision():
2519
# We assume that during 'push' this repository is closer than
2521
graph = self.repository.get_graph(target.repository)
2522
target.update_revisions(self, stop_revision,
2523
overwrite=overwrite, graph=graph)
2524
if self._push_should_merge_tags():
2525
result.tag_conflicts = self.tags.merge_to(target.tags,
2527
result.new_revno, result.new_revid = target.last_revision_info()
2530
def get_stacked_on_url(self):
2531
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1219
def get_push_location(self):
1220
"""See Branch.get_push_location."""
1221
push_loc = self.get_config().get_user_option('push_location')
2533
1224
def set_push_location(self, location):
2534
1225
"""See Branch.set_push_location."""
2535
self.get_config().set_user_option(
2536
'push_location', location,
2537
store=_mod_config.STORE_LOCATION_NORECURSE)
1226
self.get_config().set_user_option('push_location', location,
2539
def _set_parent_location(self, url):
1230
def set_parent(self, url):
1231
"""See Branch.set_parent."""
1232
# TODO: Maybe delete old location files?
1233
# URLs should never be unicode, even on the local fs,
1234
# FIXUP this and get_parent in a future branch format bump:
1235
# read and rewrite the file, and have the new format code read
1236
# using .get not .get_utf8. RBC 20060125
2540
1237
if url is None:
2541
self._transport.delete('parent')
1238
self.control_files._transport.delete('parent')
2543
self._transport.put_bytes('parent', url + '\n',
2544
mode=self.bzrdir._get_file_mode())
1240
if isinstance(url, unicode):
1242
url = url.encode('ascii')
1243
except UnicodeEncodeError:
1244
raise bzrlib.errors.InvalidURL(url,
1245
"Urls must be 7-bit ascii, "
1246
"use bzrlib.urlutils.escape")
1248
url = urlutils.relative_url(self.base, url)
1249
self.control_files.put('parent', StringIO(url + '\n'))
1251
@deprecated_function(zero_nine)
1252
def tree_config(self):
1253
"""DEPRECATED; call get_config instead.
1254
TreeConfig has become part of BranchConfig."""
1255
return TreeConfig(self)
2547
1258
class BzrBranch5(BzrBranch):
2548
"""A format 5 branch. This supports new features over plain branches.
1259
"""A format 5 branch. This supports new features over plan branches.
2550
1261
It has support for a master_branch which is the data for bound branches.
1269
super(BzrBranch5, self).__init__(_format=_format,
1270
_control_files=_control_files,
1272
_repository=_repository)
1275
def pull(self, source, overwrite=False, stop_revision=None):
1276
"""Updates branch.pull to be bound branch aware."""
1277
bound_location = self.get_bound_location()
1278
if source.base != bound_location:
1279
# not pulling from master, so we need to update master.
1280
master_branch = self.get_master_branch()
1282
master_branch.pull(source)
1283
source = master_branch
1284
return super(BzrBranch5, self).pull(source, overwrite, stop_revision)
2553
1286
def get_bound_location(self):
2555
return self._transport.get_bytes('bound')[:-1]
1288
return self.control_files.get_utf8('bound').read()[:-1]
2556
1289
except errors.NoSuchFile:
2559
1292
@needs_read_lock
2560
def get_master_branch(self, possible_transports=None):
1293
def get_master_branch(self):
2561
1294
"""Return the branch we are bound to.
2563
1296
:return: Either a Branch, or None
2565
1298
This could memoise the branch, but if thats done
2625
1372
return self.set_bound_location(None)
2627
1374
@needs_write_lock
2628
def update(self, possible_transports=None):
2629
"""Synchronise this branch with the master branch if any.
1376
"""Synchronise this branch with the master branch if any.
2631
1378
:return: None or the last_revision that was pivoted out during the
2634
master = self.get_master_branch(possible_transports)
1381
master = self.get_master_branch()
2635
1382
if master is not None:
2636
old_tip = _mod_revision.ensure_null(self.last_revision())
1383
old_tip = self.last_revision()
2637
1384
self.pull(master, overwrite=True)
2638
if self.repository.get_graph().is_ancestor(old_tip,
2639
_mod_revision.ensure_null(self.last_revision())):
1385
if old_tip in self.repository.get_ancestry(self.last_revision()):
2645
class BzrBranch8(BzrBranch5):
2646
"""A branch that stores tree-reference locations."""
2648
def _open_hook(self):
2649
if self._ignore_fallbacks:
2652
url = self.get_stacked_on_url()
2653
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2654
errors.UnstackableBranchFormat):
2657
for hook in Branch.hooks['transform_fallback_location']:
2658
url = hook(self, url)
2660
hook_name = Branch.hooks.get_hook_name(hook)
2661
raise AssertionError(
2662
"'transform_fallback_location' hook %s returned "
2663
"None, not a URL." % hook_name)
2664
self._activate_fallback_location(url)
2666
def __init__(self, *args, **kwargs):
2667
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2668
super(BzrBranch8, self).__init__(*args, **kwargs)
2669
self._last_revision_info_cache = None
2670
self._reference_info = None
2672
def _clear_cached_state(self):
2673
super(BzrBranch8, self)._clear_cached_state()
2674
self._last_revision_info_cache = None
2675
self._reference_info = None
2677
def _last_revision_info(self):
2678
revision_string = self._transport.get_bytes('last-revision')
2679
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2680
revision_id = cache_utf8.get_cached_utf8(revision_id)
2682
return revno, revision_id
2684
def _write_last_revision_info(self, revno, revision_id):
2685
"""Simply write out the revision id, with no checks.
2687
Use set_last_revision_info to perform this safely.
2689
Does not update the revision_history cache.
2690
Intended to be called by set_last_revision_info and
2691
_write_revision_history.
2693
revision_id = _mod_revision.ensure_null(revision_id)
2694
out_string = '%d %s\n' % (revno, revision_id)
2695
self._transport.put_bytes('last-revision', out_string,
2696
mode=self.bzrdir._get_file_mode())
2699
def set_last_revision_info(self, revno, revision_id):
2700
revision_id = _mod_revision.ensure_null(revision_id)
2701
old_revno, old_revid = self.last_revision_info()
2702
if self._get_append_revisions_only():
2703
self._check_history_violation(revision_id)
2704
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2705
self._write_last_revision_info(revno, revision_id)
2706
self._clear_cached_state()
2707
self._last_revision_info_cache = revno, revision_id
2708
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2710
def _synchronize_history(self, destination, revision_id):
2711
"""Synchronize last revision and revision history between branches.
2713
:see: Branch._synchronize_history
2715
# XXX: The base Branch has a fast implementation of this method based
2716
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2717
# that uses set_revision_history. This class inherits from BzrBranch5,
2718
# but wants the fast implementation, so it calls
2719
# Branch._synchronize_history directly.
2720
Branch._synchronize_history(self, destination, revision_id)
2722
def _check_history_violation(self, revision_id):
2723
last_revision = _mod_revision.ensure_null(self.last_revision())
2724
if _mod_revision.is_null(last_revision):
2726
if last_revision not in self._lefthand_history(revision_id):
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2729
def _gen_revision_history(self):
2730
"""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)
2734
return list(reversed(self._partial_revision_history_cache))
2736
def _write_revision_history(self, history):
2737
"""Factored out of set_revision_history.
2739
This performs the actual writing to disk, with format-specific checks.
2740
It is intended to be called by BzrBranch5.set_revision_history.
2742
if len(history) == 0:
2743
last_revision = 'null:'
2745
if history != self._lefthand_history(history[-1]):
2746
raise errors.NotLefthandHistory(history)
2747
last_revision = history[-1]
2748
if self._get_append_revisions_only():
2749
self._check_history_violation(last_revision)
2750
self._write_last_revision_info(len(history), last_revision)
2753
def _set_parent_location(self, url):
2754
"""Set the parent branch"""
2755
self._set_config_location('parent_location', url, make_relative=True)
2758
def _get_parent_location(self):
2759
"""Set the parent branch"""
2760
return self._get_config_location('parent_location')
2763
def _set_all_reference_info(self, info_dict):
2764
"""Replace all reference info stored in a branch.
2766
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2769
writer = rio.RioWriter(s)
2770
for key, (tree_path, branch_location) in info_dict.iteritems():
2771
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2772
branch_location=branch_location)
2773
writer.write_stanza(stanza)
2774
self._transport.put_bytes('references', s.getvalue())
2775
self._reference_info = info_dict
2778
def _get_all_reference_info(self):
2779
"""Return all the reference info stored in a branch.
2781
:return: A dict of {file_id: (tree_path, branch_location)}
2783
if self._reference_info is not None:
2784
return self._reference_info
2785
rio_file = self._transport.get('references')
2787
stanzas = rio.read_stanzas(rio_file)
2788
info_dict = dict((s['file_id'], (s['tree_path'],
2789
s['branch_location'])) for s in stanzas)
2792
self._reference_info = info_dict
2795
def set_reference_info(self, file_id, tree_path, branch_location):
2796
"""Set the branch location to use for a tree reference.
2798
:param file_id: The file-id of the tree reference.
2799
:param tree_path: The path of the tree reference in the tree.
2800
:param branch_location: The location of the branch to retrieve tree
2803
info_dict = self._get_all_reference_info()
2804
info_dict[file_id] = (tree_path, branch_location)
2805
if None in (tree_path, branch_location):
2806
if tree_path is not None:
2807
raise ValueError('tree_path must be None when branch_location'
2809
if branch_location is not None:
2810
raise ValueError('branch_location must be None when tree_path'
2812
del info_dict[file_id]
2813
self._set_all_reference_info(info_dict)
2815
def get_reference_info(self, file_id):
2816
"""Get the tree_path and branch_location for a tree reference.
2818
:return: a tuple of (tree_path, branch_location)
2820
return self._get_all_reference_info().get(file_id, (None, None))
2822
def reference_parent(self, file_id, path, possible_transports=None):
2823
"""Return the parent branch for a tree-reference file_id.
2825
:param file_id: The file_id of the tree reference
2826
:param path: The path of the file_id in the tree
2827
:return: A branch associated with the file_id
2829
branch_location = self.get_reference_info(file_id)[1]
2830
if branch_location is None:
2831
return Branch.reference_parent(self, file_id, path,
2832
possible_transports)
2833
branch_location = urlutils.join(self.user_url, branch_location)
2834
return Branch.open(branch_location,
2835
possible_transports=possible_transports)
2837
def set_push_location(self, location):
2838
"""See Branch.set_push_location."""
2839
self._set_config_location('push_location', location)
2841
def set_bound_location(self, location):
2842
"""See Branch.set_push_location."""
2844
config = self.get_config()
2845
if location is None:
2846
if config.get_user_option('bound') != 'True':
2849
config.set_user_option('bound', 'False', warn_masked=True)
2852
self._set_config_location('bound_location', location,
2854
config.set_user_option('bound', 'True', warn_masked=True)
2857
def _get_bound_location(self, bound):
2858
"""Return the bound location in the config file.
2860
Return None if the bound parameter does not match"""
2861
config = self.get_config()
2862
config_bound = (config.get_user_option('bound') == 'True')
2863
if config_bound != bound:
2865
return self._get_config_location('bound_location', config=config)
2867
def get_bound_location(self):
2868
"""See Branch.set_push_location."""
2869
return self._get_bound_location(True)
2871
def get_old_bound_location(self):
2872
"""See Branch.get_old_bound_location"""
2873
return self._get_bound_location(False)
2875
def get_stacked_on_url(self):
2876
# you can always ask for the URL; but you might not be able to use it
2877
# if the repo can't support stacking.
2878
## self._check_stackable_repo()
2879
stacked_url = self._get_config_location('stacked_on_location')
2880
if stacked_url is None:
2881
raise errors.NotStacked(self)
2884
def _get_append_revisions_only(self):
2885
return self.get_config(
2886
).get_user_option_as_bool('append_revisions_only')
2889
def generate_revision_history(self, revision_id, last_rev=None,
2891
"""See BzrBranch5.generate_revision_history"""
2892
history = self._lefthand_history(revision_id, last_rev, other_branch)
2893
revno = len(history)
2894
self.set_last_revision_info(revno, revision_id)
2897
def get_rev_id(self, revno, history=None):
2898
"""Find the revision id of the specified revno."""
2900
return _mod_revision.NULL_REVISION
2902
last_revno, last_revision_id = self.last_revision_info()
2903
if revno <= 0 or revno > last_revno:
2904
raise errors.NoSuchRevision(self, revno)
2906
if history is not None:
2907
return history[revno - 1]
2909
index = last_revno - revno
2910
if len(self._partial_revision_history_cache) <= index:
2911
self._extend_partial_history(stop_index=index)
2912
if len(self._partial_revision_history_cache) > index:
2913
return self._partial_revision_history_cache[index]
2915
raise errors.NoSuchRevision(self, revno)
2918
def revision_id_to_revno(self, revision_id):
2919
"""Given a revision id, return its revno"""
2920
if _mod_revision.is_null(revision_id):
2923
index = self._partial_revision_history_cache.index(revision_id)
2925
self._extend_partial_history(stop_revision=revision_id)
2926
index = len(self._partial_revision_history_cache) - 1
2927
if self._partial_revision_history_cache[index] != revision_id:
2928
raise errors.NoSuchRevision(self, revision_id)
2929
return self.revno() - index
2932
class BzrBranch7(BzrBranch8):
2933
"""A branch with support for a fallback repository."""
2935
def set_reference_info(self, file_id, tree_path, branch_location):
2936
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2938
def get_reference_info(self, file_id):
2939
Branch.get_reference_info(self, file_id)
2941
def reference_parent(self, file_id, path, possible_transports=None):
2942
return Branch.reference_parent(self, file_id, path,
2943
possible_transports)
2946
class BzrBranch6(BzrBranch7):
2947
"""See BzrBranchFormat6 for the capabilities of this branch.
2949
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2953
def get_stacked_on_url(self):
2954
raise errors.UnstackableBranchFormat(self._format, self.user_url)
2957
######################################################################
2958
# results of operations
2961
class _Result(object):
2963
def _show_tag_conficts(self, to_file):
2964
if not getattr(self, 'tag_conflicts', None):
2966
to_file.write('Conflicting tags:\n')
2967
for name, value1, value2 in self.tag_conflicts:
2968
to_file.write(' %s\n' % (name, ))
2971
class PullResult(_Result):
2972
"""Result of a Branch.pull operation.
2974
:ivar old_revno: Revision number before pull.
2975
:ivar new_revno: Revision number after pull.
2976
:ivar old_revid: Tip revision id before pull.
2977
:ivar new_revid: Tip revision id after pull.
2978
:ivar source_branch: Source (local) branch object. (read locked)
2979
:ivar master_branch: Master branch of the target, or the target if no
2981
:ivar local_branch: target branch if there is a Master, else None
2982
:ivar target_branch: Target/destination branch object. (write locked)
2983
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2987
# DEPRECATED: pull used to return the change in revno
2988
return self.new_revno - self.old_revno
2990
def report(self, to_file):
2992
if self.old_revid == self.new_revid:
2993
to_file.write('No revisions to pull.\n')
2995
to_file.write('Now on revision %d.\n' % self.new_revno)
2996
self._show_tag_conficts(to_file)
2999
class BranchPushResult(_Result):
3000
"""Result of a Branch.push operation.
3002
:ivar old_revno: Revision number (eg 10) of the target before push.
3003
:ivar new_revno: Revision number (eg 12) of the target after push.
3004
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
3006
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
3008
:ivar source_branch: Source branch object that the push was from. This is
3009
read locked, and generally is a local (and thus low latency) branch.
3010
:ivar master_branch: If target is a bound branch, the master branch of
3011
target, or target itself. Always write locked.
3012
:ivar target_branch: The direct Branch where data is being sent (write
3014
:ivar local_branch: If the target is a bound branch this will be the
3015
target, otherwise it will be None.
3019
# DEPRECATED: push used to return the change in revno
3020
return self.new_revno - self.old_revno
3022
def report(self, to_file):
3023
"""Write a human-readable description of the result."""
3024
if self.old_revid == self.new_revid:
3025
note('No new revisions to push.')
3027
note('Pushed up to revision %d.' % self.new_revno)
3028
self._show_tag_conficts(to_file)
1391
class BranchTestProviderAdapter(object):
1392
"""A tool to generate a suite testing multiple branch formats at once.
1394
This is done by copying the test once for each transport and injecting
1395
the transport_server, transport_readonly_server, and branch_format
1396
classes into each copy. Each copy is also given a new id() to make it
1400
def __init__(self, transport_server, transport_readonly_server, formats):
1401
self._transport_server = transport_server
1402
self._transport_readonly_server = transport_readonly_server
1403
self._formats = formats
1405
def adapt(self, test):
1406
result = TestSuite()
1407
for branch_format, bzrdir_format in self._formats:
1408
new_test = deepcopy(test)
1409
new_test.transport_server = self._transport_server
1410
new_test.transport_readonly_server = self._transport_readonly_server
1411
new_test.bzrdir_format = bzrdir_format
1412
new_test.branch_format = branch_format
1413
def make_new_test_id():
1414
new_id = "%s(%s)" % (new_test.id(), branch_format.__class__.__name__)
1415
return lambda: new_id
1416
new_test.id = make_new_test_id()
1417
result.addTest(new_test)
3031
1421
class BranchCheckResult(object):
3037
1427
def __init__(self, branch):
3038
1428
self.branch = branch
3041
1430
def report_results(self, verbose):
3042
1431
"""Report the check results via trace.note.
3044
1433
:param verbose: Requests more detailed display of what was checked,
3047
note('checked branch %s format %s', self.branch.user_url,
3048
self.branch._format)
3049
for error in self.errors:
3050
note('found error:%s', error)
3053
class Converter5to6(object):
3054
"""Perform an in-place upgrade of format 5 to format 6"""
3056
def convert(self, branch):
3057
# Data for 5 and 6 can peacefully coexist.
3058
format = BzrBranchFormat6()
3059
new_branch = format.open(branch.bzrdir, _found=True)
3061
# Copy source data into target
3062
new_branch._write_last_revision_info(*branch.last_revision_info())
3063
new_branch.set_parent(branch.get_parent())
3064
new_branch.set_bound_location(branch.get_bound_location())
3065
new_branch.set_push_location(branch.get_push_location())
3067
# New branch has no tags by default
3068
new_branch.tags._set_tag_dict({})
3070
# Copying done; now update target format
3071
new_branch._transport.put_bytes('format',
3072
format.get_format_string(),
3073
mode=new_branch.bzrdir._get_file_mode())
3075
# Clean up old files
3076
new_branch._transport.delete('revision-history')
3078
branch.set_parent(None)
3079
except errors.NoSuchFile:
3081
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.get_format_string())
3094
class Converter7to8(object):
3095
"""Perform an in-place upgrade of format 6 to format 7"""
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.get_format_string())
3104
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3105
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3108
_run_with_write_locked_target will attempt to release the lock it acquires.
3110
If an exception is raised by callable, then that exception *will* be
3111
propagated, even if the unlock attempt raises its own error. Thus
3112
_run_with_write_locked_target should be preferred to simply doing::
3116
return callable(*args, **kwargs)
3121
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3122
# should share code?
3125
result = callable(*args, **kwargs)
3127
exc_info = sys.exc_info()
3131
raise exc_info[0], exc_info[1], exc_info[2]
3137
class InterBranch(InterObject):
3138
"""This class represents operations taking place between two branches.
3140
Its instances have methods like pull() and push() and contain
3141
references to the source and target repositories these operations
3142
can be carried out on.
3146
"""The available optimised InterBranch types."""
3149
def _get_branch_formats_to_test():
3150
"""Return a tuple with the Branch formats to use when testing."""
3151
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3153
def pull(self, overwrite=False, stop_revision=None,
3154
possible_transports=None, local=False):
3155
"""Mirror source into target branch.
3157
The target branch is considered to be 'local', having low latency.
3159
:returns: PullResult instance
3161
raise NotImplementedError(self.pull)
3163
def update_revisions(self, stop_revision=None, overwrite=False,
3165
"""Pull in new perfect-fit revisions.
3167
:param stop_revision: Updated until the given revision
3168
:param overwrite: Always set the branch pointer, rather than checking
3169
to see if it is a proper descendant.
3170
:param graph: A Graph object that can be used to query history
3171
information. This can be None.
3174
raise NotImplementedError(self.update_revisions)
3176
def push(self, overwrite=False, stop_revision=None,
3177
_override_hook_source_branch=None):
3178
"""Mirror the source branch into the target branch.
3180
The source branch is considered to be 'local', having low latency.
3182
raise NotImplementedError(self.push)
3185
class GenericInterBranch(InterBranch):
3186
"""InterBranch implementation that uses public Branch functions.
3190
def _get_branch_formats_to_test():
3191
return BranchFormat._default_format, BranchFormat._default_format
3193
def update_revisions(self, stop_revision=None, overwrite=False,
3195
"""See InterBranch.update_revisions()."""
3196
self.source.lock_read()
3198
other_revno, other_last_revision = self.source.last_revision_info()
3199
stop_revno = None # unknown
3200
if stop_revision is None:
3201
stop_revision = other_last_revision
3202
if _mod_revision.is_null(stop_revision):
3203
# if there are no commits, we're done.
3205
stop_revno = other_revno
3207
# what's the current last revision, before we fetch [and change it
3209
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3210
# we fetch here so that we don't process data twice in the common
3211
# case of having something to pull, and so that the check for
3212
# already merged can operate on the just fetched graph, which will
3213
# be cached in memory.
3214
self.target.fetch(self.source, stop_revision)
3215
# Check to see if one is an ancestor of the other
3218
graph = self.target.repository.get_graph()
3219
if self.target._check_if_descendant_or_diverged(
3220
stop_revision, last_rev, graph, self.source):
3221
# stop_revision is a descendant of last_rev, but we aren't
3222
# overwriting, so we're done.
3224
if stop_revno is None:
3226
graph = self.target.repository.get_graph()
3227
this_revno, this_last_revision = \
3228
self.target.last_revision_info()
3229
stop_revno = graph.find_distance_to_null(stop_revision,
3230
[(other_last_revision, other_revno),
3231
(this_last_revision, this_revno)])
3232
self.target.set_last_revision_info(stop_revno, stop_revision)
3234
self.source.unlock()
3236
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3238
_override_hook_target=None, local=False):
3241
:param _hook_master: Private parameter - set the branch to
3242
be supplied as the master to pull hooks.
3243
:param run_hooks: Private parameter - if false, this branch
3244
is being called because it's the master of the primary branch,
3245
so it should not run its hooks.
3246
:param _override_hook_target: Private parameter - set the branch to be
3247
supplied as the target_branch to pull hooks.
3248
:param local: Only update the local branch, and not the bound branch.
3250
# This type of branch can't be bound.
3252
raise errors.LocalRequiresBoundBranch()
3253
result = PullResult()
3254
result.source_branch = self.source
3255
if _override_hook_target is None:
3256
result.target_branch = self.target
3258
result.target_branch = _override_hook_target
3259
self.source.lock_read()
3261
# We assume that during 'pull' the target repository is closer than
3263
self.source.update_references(self.target)
3264
graph = self.target.repository.get_graph(self.source.repository)
3265
# TODO: Branch formats should have a flag that indicates
3266
# that revno's are expensive, and pull() should honor that flag.
3268
result.old_revno, result.old_revid = \
3269
self.target.last_revision_info()
3270
self.target.update_revisions(self.source, stop_revision,
3271
overwrite=overwrite, graph=graph)
3272
# TODO: The old revid should be specified when merging tags,
3273
# so a tags implementation that versions tags can only
3274
# pull in the most recent changes. -- JRV20090506
3275
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3277
result.new_revno, result.new_revid = self.target.last_revision_info()
3279
result.master_branch = _hook_master
3280
result.local_branch = result.target_branch
3282
result.master_branch = result.target_branch
3283
result.local_branch = None
3285
for hook in Branch.hooks['post_pull']:
3288
self.source.unlock()
3291
def push(self, overwrite=False, stop_revision=None,
3292
_override_hook_source_branch=None):
3293
"""See InterBranch.push.
3295
This is the basic concrete implementation of push()
3297
:param _override_hook_source_branch: If specified, run
3298
the hooks passing this Branch as the source, rather than self.
3299
This is for use of RemoteBranch, where push is delegated to the
3300
underlying vfs-based Branch.
3302
# TODO: Public option to disable running hooks - should be trivial but
3304
self.source.lock_read()
3306
return _run_with_write_locked_target(
3307
self.target, self._push_with_bound_branches, overwrite,
3309
_override_hook_source_branch=_override_hook_source_branch)
3311
self.source.unlock()
3313
def _push_with_bound_branches(self, overwrite, stop_revision,
3314
_override_hook_source_branch=None):
3315
"""Push from source into target, and into target's master if any.
3318
if _override_hook_source_branch:
3319
result.source_branch = _override_hook_source_branch
3320
for hook in Branch.hooks['post_push']:
3323
bound_location = self.target.get_bound_location()
3324
if bound_location and self.target.base != bound_location:
3325
# there is a master branch.
3327
# XXX: Why the second check? Is it even supported for a branch to
3328
# be bound to itself? -- mbp 20070507
3329
master_branch = self.target.get_master_branch()
3330
master_branch.lock_write()
3332
# push into the master from the source branch.
3333
self.source._basic_push(master_branch, overwrite, stop_revision)
3334
# and push into the target branch from the source. Note that we
3335
# push from the source branch again, because its considered the
3336
# highest bandwidth repository.
3337
result = self.source._basic_push(self.target, overwrite,
3339
result.master_branch = master_branch
3340
result.local_branch = self.target
3344
master_branch.unlock()
3347
result = self.source._basic_push(self.target, overwrite,
3349
# TODO: Why set master_branch and local_branch if there's no
3350
# binding? Maybe cleaner to just leave them unset? -- mbp
3352
result.master_branch = self.target
3353
result.local_branch = None
3358
def is_compatible(self, source, target):
3359
# GenericBranch uses the public API, so always compatible
3363
class InterToBranch5(GenericInterBranch):
3366
def _get_branch_formats_to_test():
3367
return BranchFormat._default_format, BzrBranchFormat5()
3369
def pull(self, overwrite=False, stop_revision=None,
3370
possible_transports=None, run_hooks=True,
3371
_override_hook_target=None, local=False):
3372
"""Pull from source into self, updating my master if any.
3374
:param run_hooks: Private parameter - if false, this branch
3375
is being called because it's the master of the primary branch,
3376
so it should not run its hooks.
3378
bound_location = self.target.get_bound_location()
3379
if local and not bound_location:
3380
raise errors.LocalRequiresBoundBranch()
3381
master_branch = None
3382
if not local and bound_location and self.source.user_url != bound_location:
3383
# not pulling from master, so we need to update master.
3384
master_branch = self.target.get_master_branch(possible_transports)
3385
master_branch.lock_write()
3388
# pull from source into master.
3389
master_branch.pull(self.source, overwrite, stop_revision,
3391
return super(InterToBranch5, self).pull(overwrite,
3392
stop_revision, _hook_master=master_branch,
3393
run_hooks=run_hooks,
3394
_override_hook_target=_override_hook_target)
3397
master_branch.unlock()
3400
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)
1436
note('checked branch %s format %s',
1438
self.branch._format)
1441
######################################################################
1445
@deprecated_function(zero_eight)
1446
def is_control_file(*args, **kwargs):
1447
"""See bzrlib.workingtree.is_control_file."""
1448
return bzrlib.workingtree.is_control_file(*args, **kwargs)
added
removed
bzrlib/branch.py
