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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 cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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from copy import deepcopy
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from unittest import TestSuite
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from warnings import warn
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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.config import BranchConfig, TreeConfig
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from bzrlib.lockable_files import LockableFiles, TransportLock
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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.decorators import needs_read_lock, needs_write_lock
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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.hooks import Hooks
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from bzrlib.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine, zero_sixteen,
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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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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 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
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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* 'with-merges-without-common-ancestry' - filter out revisions
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that are in both ancestries
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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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.
444
# 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':
461
if direction == 'forward':
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return reversed(list(filtered))
464
raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
468
"""Iterate over an inclusive range of sorted revisions."""
469
rev_iter = iter(merge_sorted_revisions)
470
if start_revision_id is not None:
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for node in rev_iter:
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rev_id = node.key[-1]
473
if rev_id != start_revision_id:
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# 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
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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,
487
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,
494
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,
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for node in rev_iter:
508
rev_id = node.key[-1]
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if rev_id not in ancestors:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'with-merges':
514
stop_rev = self.repository.get_revision(stop_revision_id)
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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
198
def leave_lock_in_place(self):
587
199
"""Tell this branch object not to release the physical lock when this
588
200
object is unlocked.
590
202
If lock_write doesn't return a token, then this method is not supported.
592
204
self.control_files.leave_in_place()
698
308
The delta is relative to its mainline predecessor, or the
699
309
empty tree for revision 1.
311
assert isinstance(revno, int)
701
312
rh = self.revision_history()
702
313
if not (1 <= revno <= len(rh)):
703
raise errors.InvalidRevisionNumber(revno)
314
raise InvalidRevisionNumber(revno)
704
315
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.
317
@deprecated_method(zero_sixteen)
318
def get_root_id(self):
319
"""Return the id of this branches root
709
:raises NotStacked: If the branch is not stacked.
710
:raises UnstackableBranchFormat: If the branch does not support
321
Deprecated: branches don't have root ids-- trees do.
322
Use basis_tree().get_root_id() instead.
713
raise NotImplementedError(self.get_stacked_on_url)
324
raise NotImplementedError(self.get_root_id)
715
326
def print_file(self, file, revision_id):
716
327
"""Print `file` to stdout."""
717
328
raise NotImplementedError(self.print_file)
330
def append_revision(self, *revision_ids):
331
raise NotImplementedError(self.append_revision)
719
333
def set_revision_history(self, rev_history):
720
334
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
336
def _cache_revision_history(self, rev_history):
832
337
"""Set the cached revision history to rev_history.
942
433
common_index = min(self_len, other_len) -1
943
434
if common_index >= 0 and \
944
435
self_history[common_index] != other_history[common_index]:
945
raise errors.DivergedBranches(self, other)
436
raise DivergedBranches(self, other)
947
438
if stop_revision is None:
948
439
stop_revision = other_len
441
assert isinstance(stop_revision, int)
950
442
if stop_revision > other_len:
951
443
raise errors.NoSuchRevision(self, stop_revision)
952
444
return other_history[self_len:stop_revision]
955
def update_revisions(self, other, stop_revision=None, overwrite=False,
446
def update_revisions(self, other, stop_revision=None):
957
447
"""Pull in new perfect-fit revisions.
959
449
:param other: Another Branch to pull from
960
450
: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)
453
raise NotImplementedError(self.update_revisions)
984
455
def revision_id_to_revno(self, revision_id):
985
456
"""Given a revision id, return its revno"""
986
if _mod_revision.is_null(revision_id):
457
if revision_id is None:
459
revision_id = osutils.safe_revision_id(revision_id)
988
460
history = self.revision_history()
990
462
return history.index(revision_id) + 1
991
463
except ValueError:
992
raise errors.NoSuchRevision(self, revision_id)
464
raise bzrlib.errors.NoSuchRevision(self, revision_id)
995
466
def get_rev_id(self, revno, history=None):
996
467
"""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]
471
history = self.revision_history()
472
if revno <= 0 or revno > len(history):
473
raise bzrlib.errors.NoSuchRevision(self, revno)
474
return history[revno - 1]
1010
def pull(self, source, overwrite=False, stop_revision=None,
1011
possible_transports=None, *args, **kwargs):
476
def pull(self, source, overwrite=False, stop_revision=None):
1012
477
"""Mirror source into this branch.
1014
479
This branch is considered to be 'local', having low latency.
1016
481
:returns: PullResult instance
1018
return InterBranch.get(source, self).pull(overwrite=overwrite,
1019
stop_revision=stop_revision,
1020
possible_transports=possible_transports, *args, **kwargs)
483
raise NotImplementedError(self.pull)
1022
def push(self, target, overwrite=False, stop_revision=None, *args,
485
def push(self, target, overwrite=False, stop_revision=None):
1024
486
"""Mirror this branch into target.
1026
488
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)
490
raise NotImplementedError(self.push)
1052
492
def basis_tree(self):
1053
493
"""Return `Tree` object for last revision."""
1054
494
return self.repository.revision_tree(self.last_revision())
496
def rename_one(self, from_rel, to_rel):
499
This can change the directory or the filename or both.
501
raise NotImplementedError(self.rename_one)
503
def move(self, from_paths, to_name):
506
to_name must exist as a versioned directory.
508
If to_name exists and is a directory, the files are moved into
509
it, keeping their old names. If it is a directory,
511
Note that to_name is only the last component of the new name;
512
this doesn't change the directory.
514
This returns a list of (from_path, to_path) pairs for each
517
raise NotImplementedError(self.move)
1056
519
def get_parent(self):
1057
520
"""Return the parent location of the branch.
1059
This is the default location for pull/missing. The usual
522
This is the default location for push/pull/missing. The usual
1060
523
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)
526
raise NotImplementedError(self.get_parent)
1078
528
def _set_config_location(self, name, url, config=None,
1079
529
make_relative=False):
1180
606
self.check_real_revno(revno)
1182
608
def check_real_revno(self, revno):
1184
610
Check whether a revno corresponds to a real revision.
1185
611
Zero (the NULL revision) is considered invalid
1187
613
if revno < 1 or revno > self.revno():
1188
raise errors.InvalidRevisionNumber(revno)
614
raise InvalidRevisionNumber(revno)
1190
616
@needs_read_lock
1191
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
617
def clone(self, to_bzrdir, revision_id=None):
1192
618
"""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
620
revision_id: if not None, the revision history in the new branch will
1198
621
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)
623
result = self._format.initialize(to_bzrdir)
624
self.copy_content_into(result, revision_id=revision_id)
1210
627
@needs_read_lock
1211
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
628
def sprout(self, to_bzrdir, revision_id=None):
1212
629
"""Create a new line of development from the branch, into to_bzrdir.
1214
to_bzrdir controls the branch format.
1216
631
revision_id: if not None, the revision history in the new branch will
1217
632
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)
634
result = self._format.initialize(to_bzrdir)
635
self.copy_content_into(result, revision_id=revision_id)
636
result.set_parent(self.bzrdir.root_transport.base)
1233
639
def _synchronize_history(self, destination, revision_id):
1234
640
"""Synchronize last revision and revision history between branches.
1236
642
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.
643
BzrBranch5, but works for BzrBranch6 as long as the revision
644
history is the true lefthand parent history, and all of the revisions
645
are in the destination's repository. If not, set_revision_history
1241
648
:param destination: The branch to copy the history into
1242
649
:param revision_id: The revision-id to truncate history at. May
1243
650
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()
652
new_history = self.revision_history()
653
if revision_id is not None:
654
revision_id = osutils.safe_revision_id(revision_id)
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)
656
new_history = new_history[:new_history.index(revision_id) + 1]
658
rev = self.repository.get_revision(revision_id)
659
new_history = rev.get_history(self.repository)[1:]
660
destination.set_revision_history(new_history)
1258
662
@needs_read_lock
1259
663
def copy_content_into(self, destination, revision_id=None):
1273
676
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)
677
self.tags.merge_to(destination.tags)
1294
679
@needs_read_lock
1295
def check(self, refs):
1296
681
"""Check consistency of the branch.
1298
683
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
684
do actually match up in the revision graph, and that they're all
1300
685
present in the repository.
1302
687
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
689
: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
691
mainline_parent_id = None
692
for revision_id in self.revision_history():
694
revision = self.repository.get_revision(revision_id)
695
except errors.NoSuchRevision, e:
696
raise errors.BzrCheckError("mainline revision {%s} not in repository"
698
# In general the first entry on the revision history has no parents.
699
# But it's not illegal for it to have parents listed; this can happen
700
# in imports from Arch when the parents weren't reachable.
701
if mainline_parent_id is not None:
702
if mainline_parent_id not in revision.parent_ids:
703
raise errors.BzrCheckError("previous revision {%s} not listed among "
705
% (mainline_parent_id, revision_id))
706
mainline_parent_id = revision_id
707
return BranchCheckResult(self)
1322
709
def _get_checkout_format(self):
1323
710
"""Return the most suitable metadir for a checkout of this branch.
1324
711
Weaves are used if this branch's repository uses weaves.
713
from bzrlib.remote import RemoteBzrDir
1326
714
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1327
715
from bzrlib.repofmt import weaverepo
1328
716
format = bzrdir.BzrDirMetaFormat1()
1329
717
format.repository_format = weaverepo.RepositoryFormat7()
718
elif isinstance(self.bzrdir, RemoteBzrDir):
719
format = bzrdir.BzrDirMetaFormat1()
1331
721
format = self.repository.bzrdir.checkout_metadir()
1332
722
format.set_branch_format(self._format)
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
725
def create_checkout(self, to_location, revision_id=None,
1357
lightweight=False, accelerator_tree=None,
1359
727
"""Create a checkout of a branch.
1361
729
:param to_location: The url to produce the checkout at
1362
730
:param revision_id: The revision to check out
1363
731
:param lightweight: If True, produce a lightweight checkout, otherwise,
1364
732
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
733
:return: The tree of the created checkout
1373
735
t = transport.get_transport(to_location)
738
except errors.FileExists:
1376
741
format = self._get_checkout_format()
1377
742
checkout = format.initialize_on_transport(t)
1378
from_branch = BranchReferenceFormat().initialize(checkout,
743
BranchReferenceFormat().initialize(checkout, self)
1381
745
format = self._get_checkout_format()
1382
746
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1383
747
to_location, force_new_tree=False, format=format)
1384
748
checkout = checkout_branch.bzrdir
1385
749
checkout_branch.bind(self)
1386
# pull up to the specified revision_id to set the initial
750
# pull up to the specified revision_id to set the initial
1387
751
# branch tip correctly, and seed it with history.
1388
752
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,
753
tree = checkout.create_workingtree(revision_id)
1394
754
basis_tree = tree.basis_tree()
1395
755
basis_tree.lock_read()
1403
763
basis_tree.unlock()
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):
766
def reference_parent(self, file_id, path):
1415
767
"""Return the parent branch for a tree-reference file_id
1416
768
:param file_id: The file_id of the tree reference
1417
769
:param path: The path of the file_id in the tree
1418
770
:return: A branch associated with the file_id
1420
772
# FIXME should provide multiple branches, based on config
1421
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1422
possible_transports=possible_transports)
773
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1424
775
def supports_tags(self):
1425
776
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,))
1475
779
class BranchFormat(object):
1476
780
"""An encapsulation of the initialization and open routines for a format.
1585
859
control_files = lockable_files.LockableFiles(branch_transport,
1586
860
lock_name, lock_class)
1587
861
control_files.create_lock()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
862
control_files.lock_write()
1597
utf8_files += [('format', self.get_format_string())]
864
control_files.put_utf8('format', self.get_format_string())
1599
for (filename, content) in utf8_files:
1600
branch_transport.put_bytes(
1602
mode=a_bzrdir._get_file_mode())
866
for file, content in utf8_files:
867
control_files.put_utf8(file, content)
1605
control_files.unlock()
1606
branch = self.open(a_bzrdir, name, _found=True)
1607
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
869
control_files.unlock()
870
return self.open(a_bzrdir, _found=True)
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.
872
def initialize(self, a_bzrdir):
873
"""Create a branch of this format in a_bzrdir."""
1615
874
raise NotImplementedError(self.initialize)
1617
876
def is_supported(self):
1618
877
"""Is this format supported?
1620
879
Supported formats can be initialized and opened.
1621
Unsupported formats may not support initialization or committing or
880
Unsupported formats may not support initialization or committing or
1622
881
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):
885
def open(self, a_bzrdir, _found=False):
1651
886
"""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.
888
_found is a private parameter, do not use it. It is used to indicate
889
if format probing has already be done.
1660
891
raise NotImplementedError(self.open)
1663
894
def register_format(klass, format):
1664
"""Register a metadir format."""
1665
895
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
898
def set_default_format(klass, format):
1672
899
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
902
def unregister_format(klass, format):
903
assert klass._formats[format.get_format_string()] is format
1684
904
del klass._formats[format.get_format_string()]
1686
906
def __str__(self):
1687
return self.get_format_description().rstrip()
907
return self.get_format_string().rstrip()
1689
909
def supports_tags(self):
1690
910
"""True if this format supports tags stored in the branch"""
1691
911
return False # by default
913
# XXX: Probably doesn't really belong here -- mbp 20070212
914
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
916
branch_transport = a_bzrdir.get_branch_transport(self)
917
control_files = lockable_files.LockableFiles(branch_transport,
918
lock_filename, lock_class)
919
control_files.create_lock()
920
control_files.lock_write()
922
for filename, content in utf8_files:
923
control_files.put_utf8(filename, content)
925
control_files.unlock()
1694
928
class BranchHooks(Hooks):
1695
929
"""A dictionary mapping hook name to a list of callables for branch hooks.
1697
931
e.g. ['set_rh'] Is the list of items to be called when the
1698
932
set_revision_history function is invoked.
1707
941
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))
942
# Introduced in 0.15:
943
# invoked whenever the revision history has been set
944
# with set_revision_history. The api signature is
945
# (branch, revision_history), and the branch will
948
# invoked after a push operation completes.
949
# the api signature is
951
# containing the members
952
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
953
# where local is the local branch or None, master is the target
954
# master branch, and the rest should be self explanatory. The source
955
# is read locked and the target branches write locked. Source will
956
# be the local low-latency branch.
957
self['post_push'] = []
958
# invoked after a pull operation completes.
959
# the api signature is
961
# containing the members
962
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
963
# where local is the local branch or None, master is the target
964
# master branch, and the rest should be self explanatory. The source
965
# is read locked and the target branches write locked. The local
966
# branch is the low-latency branch.
967
self['post_pull'] = []
968
# invoked after a commit operation completes.
969
# the api signature is
970
# (local, master, old_revno, old_revid, new_revno, new_revid)
971
# old_revid is NULL_REVISION for the first commit to a branch.
972
self['post_commit'] = []
973
# invoked after a uncommit operation completes.
974
# the api signature is
975
# (local, master, old_revno, old_revid, new_revno, new_revid) where
976
# local is the local branch or None, master is the target branch,
977
# and an empty branch recieves new_revno of 0, new_revid of None.
978
self['post_uncommit'] = []
1787
981
# install the default hooks into the Branch class.
1788
982
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,
1907
985
class BzrBranchFormat4(BranchFormat):
1908
986
"""Bzr branch format 4.
1916
994
"""See BranchFormat.get_format_description()."""
1917
995
return "Branch format 4"
1919
def initialize(self, a_bzrdir, name=None):
997
def initialize(self, a_bzrdir):
1920
998
"""Create a branch of this format in a_bzrdir."""
1921
999
utf8_files = [('revision-history', ''),
1922
1000
('branch-name', ''),
1924
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1002
return self._initialize_helper(a_bzrdir, utf8_files,
1925
1003
lock_type='branch4', set_format=False)
1927
1005
def __init__(self):
1928
1006
super(BzrBranchFormat4, self).__init__()
1929
1007
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()
1009
def open(self, a_bzrdir, _found=False):
1010
"""Return the branch object for a_bzrdir
1935
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1936
"""See BranchFormat.open()."""
1012
_found is a private parameter, do not use it. It is used to indicate
1013
if format probing has already be done.
1938
1016
# we are being called directly and must probe.
1939
1017
raise NotImplementedError
1940
1018
return BzrBranch(_format=self,
1941
1019
_control_files=a_bzrdir._control_files,
1942
1020
a_bzrdir=a_bzrdir,
1944
1021
_repository=a_bzrdir.open_repository())
1946
1023
def __str__(self):
1947
1024
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.
1027
class BzrBranchFormat5(BranchFormat):
1028
"""Bzr branch format 5.
1031
- a revision-history file.
1033
- a lock dir guarding the branch itself
1034
- all of this stored in a branch/ subdirectory
1035
- works with shared repositories.
1037
This format is new in bzr 0.8.
1040
def get_format_string(self):
1041
"""See BranchFormat.get_format_string()."""
1042
return "Bazaar-NG branch format 5\n"
1044
def get_format_description(self):
1045
"""See BranchFormat.get_format_description()."""
1046
return "Branch format 5"
1048
def initialize(self, a_bzrdir):
1049
"""Create a branch of this format in a_bzrdir."""
1050
utf8_files = [('revision-history', ''),
1051
('branch-name', ''),
1053
return self._initialize_helper(a_bzrdir, utf8_files)
1056
super(BzrBranchFormat5, self).__init__()
1057
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1059
def open(self, a_bzrdir, _found=False):
1060
"""Return the branch object for a_bzrdir
1062
_found is a private parameter, do not use it. It is used to indicate
1063
if format probing has already be done.
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)
1066
format = BranchFormat.find_format(a_bzrdir)
1067
assert format.__class__ == self.__class__
1069
transport = a_bzrdir.get_branch_transport(None)
1973
1070
control_files = lockable_files.LockableFiles(transport, 'lock',
1974
1071
lockdir.LockDir)
1975
return self._branch_class()(_format=self,
1072
return BzrBranch5(_format=self,
1976
1073
_control_files=control_files,
1978
1074
a_bzrdir=a_bzrdir,
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):
1994
"""Bzr branch format 5.
1997
- a revision-history file.
1999
- a lock dir guarding the branch itself
2000
- all of this stored in a branch/ subdirectory
2001
- works with shared repositories.
2003
This format is new in bzr 0.8.
2006
def _branch_class(self):
2009
def get_format_string(self):
2010
"""See BranchFormat.get_format_string()."""
2011
return "Bazaar-NG branch format 5\n"
2013
def get_format_description(self):
2014
"""See BranchFormat.get_format_description()."""
2015
return "Branch format 5"
2017
def initialize(self, a_bzrdir, name=None):
2018
"""Create a branch of this format in a_bzrdir."""
2019
utf8_files = [('revision-history', ''),
2020
('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.
1075
_repository=a_bzrdir.find_repository())
1077
raise NotBranchError(path=transport.base)
1080
class BzrBranchFormat6(BzrBranchFormat5):
1081
"""Branch format with last-revision
2031
1083
Unlike previous formats, this has no explicit revision history. Instead,
2032
1084
this just stores the last-revision, and the left-hand history leading
2033
1085
up to there is the history.
2035
1087
This format was introduced in bzr 0.15
2036
and became the default in 0.91.
2039
def _branch_class(self):
2042
1090
def get_format_string(self):
2043
1091
"""See BranchFormat.get_format_string()."""
2044
1092
return "Bazaar Branch Format 6 (bzr 0.15)\n"
2047
1095
"""See BranchFormat.get_format_description()."""
2048
1096
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)
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
1098
def initialize(self, a_bzrdir):
1099
"""Create a branch of this format in a_bzrdir."""
1100
utf8_files = [('last-revision', '0 null:\n'),
1101
('branch-name', ''),
1102
('branch.conf', ''),
1105
return self._initialize_helper(a_bzrdir, utf8_files)
1107
def open(self, a_bzrdir, _found=False):
1108
"""Return the branch object for a_bzrdir
1110
_found is a private parameter, do not use it. It is used to indicate
1111
if format probing has already be done.
1114
format = BranchFormat.find_format(a_bzrdir)
1115
assert format.__class__ == self.__class__
1116
transport = a_bzrdir.get_branch_transport(None)
1117
control_files = lockable_files.LockableFiles(transport, 'lock',
1119
return BzrBranch6(_format=self,
1120
_control_files=control_files,
1122
_repository=a_bzrdir.find_repository())
1124
def supports_tags(self):
2141
1128
class BranchReferenceFormat(BranchFormat):
2156
1143
def get_format_description(self):
2157
1144
"""See BranchFormat.get_format_description()."""
2158
1145
return "Checkout reference format 1"
2160
1147
def get_reference(self, a_bzrdir):
2161
1148
"""See BranchFormat.get_reference()."""
2162
1149
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):
1150
return transport.get('location').read()
1152
def initialize(self, a_bzrdir, target_branch=None):
2171
1153
"""Create a branch of this format in a_bzrdir."""
2172
1154
if target_branch is None:
2173
1155
# this format does not implement branch itself, thus the implicit
2174
1156
# creation contract must see it as uninitializable
2175
1157
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)
1158
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1159
branch_transport = a_bzrdir.get_branch_transport(self)
2178
1160
branch_transport.put_bytes('location',
2179
target_branch.bzrdir.user_url)
1161
target_branch.bzrdir.root_transport.base)
2180
1162
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)
1163
return self.open(a_bzrdir, _found=True)
2187
1165
def __init__(self):
2188
1166
super(BranchReferenceFormat, self).__init__()
2189
1167
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2190
self._matchingbzrdir.set_branch_format(self)
2192
1169
def _make_reference_clone_function(format, a_branch):
2193
1170
"""Create a clone() routine for a branch dynamically."""
2194
def clone(to_bzrdir, revision_id=None,
2195
repository_policy=None):
1171
def clone(to_bzrdir, revision_id=None):
2196
1172
"""See Branch.clone()."""
2197
return format.initialize(to_bzrdir, target_branch=a_branch)
1173
return format.initialize(to_bzrdir, a_branch)
2198
1174
# cannot obey revision_id limits when cloning a reference ...
2199
1175
# FIXME RBC 20060210 either nuke revision_id for clone, or
2200
1176
# 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):
1179
def open(self, a_bzrdir, _found=False, location=None):
2205
1180
"""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.
1182
_found is a private parameter, do not use it. It is used to indicate
1183
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" %
1186
format = BranchFormat.find_format(a_bzrdir)
1187
assert format.__class__ == self.__class__
2223
1188
if location is None:
2224
1189
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)
1190
real_bzrdir = bzrdir.BzrDir.open(location)
1191
result = real_bzrdir.open_branch()
2229
1192
# this changes the behaviour of result.clone to create a new reference
2230
1193
# rather than a copy of the content of the branch.
2231
1194
# 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
1204
# formats which have no format string are not discoverable
2251
1205
# 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)
1206
__default_format = BzrBranchFormat5()
1207
BranchFormat.register_format(__default_format)
2257
1208
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)
1209
BranchFormat.register_format(BzrBranchFormat6())
1210
BranchFormat.set_default_format(__default_format)
2262
1211
_legacy_formats = [BzrBranchFormat4(),
2264
network_format_registry.register(
2265
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2268
class BzrBranch(Branch, _RelockDebugMixin):
1214
class BzrBranch(Branch):
2269
1215
"""A branch stored in the actual filesystem.
2271
1217
Note that it's "local" in the context of the filesystem; it doesn't
2272
1218
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2273
1219
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
1222
def __init__(self, _format=None,
2285
_control_files=None, a_bzrdir=None, name=None,
2286
_repository=None, ignore_fallbacks=False):
1223
_control_files=None, a_bzrdir=None, _repository=None):
2287
1224
"""Create new branch object at a particular location."""
1225
Branch.__init__(self)
2288
1226
if a_bzrdir is None:
2289
1227
raise ValueError('a_bzrdir must be supplied')
2291
1229
self.bzrdir = a_bzrdir
1230
# self._transport used to point to the directory containing the
1231
# control directory, but was not used - now it's just the transport
1232
# for the branch control files. mbp 20070212
2292
1233
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
2297
1234
self._format = _format
2298
1235
if _control_files is None:
2299
1236
raise ValueError('BzrBranch _control_files is None')
2300
1237
self.control_files = _control_files
2301
1238
self._transport = _control_files._transport
2302
1239
self.repository = _repository
2303
Branch.__init__(self)
2305
1241
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,
1242
return '%s(%r)' % (self.__class__.__name__, self.base)
2312
1244
__repr__ = __str__
2318
1250
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')
1252
def abspath(self, name):
1253
"""See Branch.abspath."""
1254
return self.control_files._transport.abspath(name)
1257
@deprecated_method(zero_sixteen)
1259
def get_root_id(self):
1260
"""See Branch.get_root_id."""
1261
tree = self.repository.revision_tree(self.last_revision())
1262
return tree.inventory.root.file_id
2323
1264
def is_locked(self):
2324
1265
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()
1267
def lock_write(self, tokens=None):
1268
if tokens is not None:
1269
branch_token, repo_token = tokens
1271
branch_token = repo_token = None
1272
repo_token = self.repository.lock_write(token=repo_token)
2338
return self.control_files.lock_write(token=token)
1274
branch_token = self.control_files.lock_write(token=branch_token)
2341
self.repository.unlock()
1276
self.repository.unlock()
1279
tokens = (branch_token, repo_token)
1280
assert tokens == (None, None) or None not in tokens, (
1281
'Both branch and repository locks must return tokens, or else '
1282
'neither must return tokens. Got %r.' % (tokens,))
1283
if tokens == (None, None):
2344
1288
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()
1289
self.repository.lock_read()
2356
1291
self.control_files.lock_read()
2359
self.repository.unlock()
1293
self.repository.unlock()
2362
@only_raises(errors.LockNotHeld, errors.LockBroken)
2363
1296
def unlock(self):
1297
# TODO: test for failed two phase locks. This is known broken.
2365
1299
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()
1301
self.repository.unlock()
1302
if not self.control_files.is_locked():
1303
# we just released the lock
1304
self._clear_cached_state()
2376
1306
def peek_lock_mode(self):
2377
1307
if self.control_files._lock_count == 0:
2387
1317
"""See Branch.print_file."""
2388
1318
return self.repository.print_file(file, revision_id)
1321
def append_revision(self, *revision_ids):
1322
"""See Branch.append_revision."""
1323
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1324
for revision_id in revision_ids:
1325
_mod_revision.check_not_reserved_id(revision_id)
1326
mutter("add {%s} to revision-history" % revision_id)
1327
rev_history = self.revision_history()
1328
rev_history.extend(revision_ids)
1329
self.set_revision_history(rev_history)
2390
1331
def _write_revision_history(self, history):
2391
1332
"""Factored out of set_revision_history.
2393
1334
This performs the actual writing to disk.
2394
1335
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())
1336
self.control_files.put_bytes(
1337
'revision-history', '\n'.join(history))
2399
1339
@needs_write_lock
2400
1340
def set_revision_history(self, rev_history):
2401
1341
"""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)
1342
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
2416
1343
self._write_revision_history(rev_history)
2417
self._clear_cached_state()
2418
1344
self._cache_revision_history(rev_history)
2419
1345
for hook in Branch.hooks['set_rh']:
2420
1346
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)
2453
1348
@needs_write_lock
2454
1349
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
1350
revision_id = osutils.safe_revision_id(revision_id)
2469
1351
history = self._lefthand_history(revision_id)
2470
if len(history) != revno:
2471
raise AssertionError('%d != %d' % (len(history), revno))
1352
assert len(history) == revno, '%d != %d' % (len(history), revno)
2472
1353
self.set_revision_history(history)
2474
1355
def _gen_revision_history(self):
2475
history = self._transport.get_bytes('revision-history').split('\n')
1356
history = self.control_files.get('revision-history').read().split('\n')
2476
1357
if history[-1:] == ['']:
2477
1358
# There shouldn't be a trailing newline, but just in case.
1362
def _lefthand_history(self, revision_id, last_rev=None,
1364
# stop_revision must be a descendant of last_revision
1365
stop_graph = self.repository.get_revision_graph(revision_id)
1366
if last_rev is not None and last_rev not in stop_graph:
1367
# our previous tip is not merged into stop_revision
1368
raise errors.DivergedBranches(self, other_branch)
1369
# make a new revision history from the graph
1370
current_rev_id = revision_id
1372
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1373
new_history.append(current_rev_id)
1374
current_rev_id_parents = stop_graph[current_rev_id]
1376
current_rev_id = current_rev_id_parents[0]
1378
current_rev_id = None
1379
new_history.reverse()
2481
1382
@needs_write_lock
2482
1383
def generate_revision_history(self, revision_id, last_rev=None,
2483
1384
other_branch=None):
2489
1390
:param other_branch: The other branch that DivergedBranches should
2490
1391
raise with respect to.
1393
revision_id = osutils.safe_revision_id(revision_id)
2492
1394
self.set_revision_history(self._lefthand_history(revision_id,
2493
1395
last_rev, other_branch))
1398
def update_revisions(self, other, stop_revision=None):
1399
"""See Branch.update_revisions."""
1402
if stop_revision is None:
1403
stop_revision = other.last_revision()
1404
if stop_revision is None:
1405
# if there are no commits, we're done.
1408
stop_revision = osutils.safe_revision_id(stop_revision)
1409
# whats the current last revision, before we fetch [and change it
1411
last_rev = self.last_revision()
1412
# we fetch here regardless of whether we need to so that we pickup
1414
self.fetch(other, stop_revision)
1415
my_ancestry = self.repository.get_ancestry(last_rev)
1416
if stop_revision in my_ancestry:
1417
# last_revision is a descendant of stop_revision
1419
self.generate_revision_history(stop_revision, last_rev=last_rev,
2495
1424
def basis_tree(self):
2496
1425
"""See Branch.basis_tree."""
2497
1426
return self.repository.revision_tree(self.last_revision())
1428
@deprecated_method(zero_eight)
1429
def working_tree(self):
1430
"""Create a Working tree object for this branch."""
1432
from bzrlib.transport.local import LocalTransport
1433
if (self.base.find('://') != -1 or
1434
not isinstance(self._transport, LocalTransport)):
1435
raise NoWorkingTree(self.base)
1436
return self.bzrdir.open_workingtree()
1439
def pull(self, source, overwrite=False, stop_revision=None,
1440
_hook_master=None, _run_hooks=True):
1443
:param _hook_master: Private parameter - set the branch to
1444
be supplied as the master to push hooks.
1445
:param _run_hooks: Private parameter - allow disabling of
1446
hooks, used when pushing to a master branch.
1448
result = PullResult()
1449
result.source_branch = source
1450
result.target_branch = self
1453
result.old_revno, result.old_revid = self.last_revision_info()
1455
self.update_revisions(source, stop_revision)
1456
except DivergedBranches:
1460
if stop_revision is None:
1461
stop_revision = source.last_revision()
1462
self.generate_revision_history(stop_revision)
1463
result.tag_conflicts = source.tags.merge_to(self.tags)
1464
result.new_revno, result.new_revid = self.last_revision_info()
1466
result.master_branch = _hook_master
1467
result.local_branch = self
1469
result.master_branch = self
1470
result.local_branch = None
1472
for hook in Branch.hooks['post_pull']:
2499
1478
def _get_parent_location(self):
2500
1479
_locs = ['parent', 'pull', 'x-pull']
2501
1480
for l in _locs:
2503
return self._transport.get_bytes(l).strip('\n')
2504
except errors.NoSuchFile:
1482
return self.control_files.get(l).read().strip('\n')
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.
1488
def push(self, target, overwrite=False, stop_revision=None,
1489
_hook_master=None, _run_hooks=True):
1492
:param _hook_master: Private parameter - set the branch to
1493
be supplied as the master to push hooks.
1494
:param _run_hooks: Private parameter - allow disabling of
1495
hooks, used when pushing to a master branch.
2513
result = BranchPushResult()
1497
result = PushResult()
2514
1498
result.source_branch = self
2515
1499
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()
1502
result.old_revno, result.old_revid = target.last_revision_info()
1504
target.update_revisions(self, stop_revision)
1505
except DivergedBranches:
1509
target.set_revision_history(self.revision_history())
1510
result.tag_conflicts = self.tags.merge_to(target.tags)
1511
result.new_revno, result.new_revid = target.last_revision_info()
1513
result.master_branch = _hook_master
1514
result.local_branch = target
1516
result.master_branch = target
1517
result.local_branch = None
1519
for hook in Branch.hooks['post_push']:
2530
def get_stacked_on_url(self):
2531
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1525
def get_parent(self):
1526
"""See Branch.get_parent."""
1528
assert self.base[-1] == '/'
1529
parent = self._get_parent_location()
1532
# This is an old-format absolute path to a local branch
1533
# turn it into a url
1534
if parent.startswith('/'):
1535
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1537
return urlutils.join(self.base[:-1], parent)
1538
except errors.InvalidURLJoin, e:
1539
raise errors.InaccessibleParent(parent, self.base)
2533
1541
def set_push_location(self, location):
2534
1542
"""See Branch.set_push_location."""
2536
1544
'push_location', location,
2537
1545
store=_mod_config.STORE_LOCATION_NORECURSE)
1548
def set_parent(self, url):
1549
"""See Branch.set_parent."""
1550
# TODO: Maybe delete old location files?
1551
# URLs should never be unicode, even on the local fs,
1552
# FIXUP this and get_parent in a future branch format bump:
1553
# read and rewrite the file, and have the new format code read
1554
# using .get not .get_utf8. RBC 20060125
1556
if isinstance(url, unicode):
1558
url = url.encode('ascii')
1559
except UnicodeEncodeError:
1560
raise bzrlib.errors.InvalidURL(url,
1561
"Urls must be 7-bit ascii, "
1562
"use bzrlib.urlutils.escape")
1563
url = urlutils.relative_url(self.base, url)
1564
self._set_parent_location(url)
2539
1566
def _set_parent_location(self, url):
2540
1567
if url is None:
2541
self._transport.delete('parent')
1568
self.control_files._transport.delete('parent')
2543
self._transport.put_bytes('parent', url + '\n',
2544
mode=self.bzrdir._get_file_mode())
1570
assert isinstance(url, str)
1571
self.control_files.put_bytes('parent', url + '\n')
1573
@deprecated_function(zero_nine)
1574
def tree_config(self):
1575
"""DEPRECATED; call get_config instead.
1576
TreeConfig has become part of BranchConfig."""
1577
return TreeConfig(self)
2547
1580
class BzrBranch5(BzrBranch):
2548
"""A format 5 branch. This supports new features over plain branches.
1581
"""A format 5 branch. This supports new features over plan branches.
2550
1583
It has support for a master_branch which is the data for bound branches.
1591
super(BzrBranch5, self).__init__(_format=_format,
1592
_control_files=_control_files,
1594
_repository=_repository)
1597
def pull(self, source, overwrite=False, stop_revision=None,
1599
"""Extends branch.pull to be bound branch aware.
1601
:param _run_hooks: Private parameter used to force hook running
1602
off during bound branch double-pushing.
1604
bound_location = self.get_bound_location()
1605
master_branch = None
1606
if bound_location and source.base != bound_location:
1607
# not pulling from master, so we need to update master.
1608
master_branch = self.get_master_branch()
1609
master_branch.lock_write()
1612
# pull from source into master.
1613
master_branch.pull(source, overwrite, stop_revision,
1615
return super(BzrBranch5, self).pull(source, overwrite,
1616
stop_revision, _hook_master=master_branch,
1617
_run_hooks=_run_hooks)
1620
master_branch.unlock()
1623
def push(self, target, overwrite=False, stop_revision=None):
1624
"""Updates branch.push to be bound branch aware."""
1625
bound_location = target.get_bound_location()
1626
master_branch = None
1627
if bound_location and target.base != bound_location:
1628
# not pushing to master, so we need to update master.
1629
master_branch = target.get_master_branch()
1630
master_branch.lock_write()
1633
# push into the master from this branch.
1634
super(BzrBranch5, self).push(master_branch, overwrite,
1635
stop_revision, _run_hooks=False)
1636
# and push into the target branch from this. Note that we push from
1637
# this branch again, because its considered the highest bandwidth
1639
return super(BzrBranch5, self).push(target, overwrite,
1640
stop_revision, _hook_master=master_branch)
1643
master_branch.unlock()
2553
1645
def get_bound_location(self):
2555
return self._transport.get_bytes('bound')[:-1]
1647
return self.control_files.get_utf8('bound').read()[:-1]
2556
1648
except errors.NoSuchFile:
2559
1651
@needs_read_lock
2560
def get_master_branch(self, possible_transports=None):
1652
def get_master_branch(self):
2561
1653
"""Return the branch we are bound to.
2563
1655
:return: Either a Branch, or None
2565
1657
This could memoise the branch, but if thats done
2625
1731
return self.set_bound_location(None)
2627
1733
@needs_write_lock
2628
def update(self, possible_transports=None):
2629
"""Synchronise this branch with the master branch if any.
1735
"""Synchronise this branch with the master branch if any.
2631
1737
:return: None or the last_revision that was pivoted out during the
2634
master = self.get_master_branch(possible_transports)
1740
master = self.get_master_branch()
2635
1741
if master is not None:
2636
old_tip = _mod_revision.ensure_null(self.last_revision())
1742
old_tip = self.last_revision()
2637
1743
self.pull(master, overwrite=True)
2638
if self.repository.get_graph().is_ancestor(old_tip,
2639
_mod_revision.ensure_null(self.last_revision())):
1744
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:
1750
class BzrBranchExperimental(BzrBranch5):
1751
"""Bzr experimental branch format
1754
- a revision-history file.
1756
- a lock dir guarding the branch itself
1757
- all of this stored in a branch/ subdirectory
1758
- works with shared repositories.
1759
- a tag dictionary in the branch
1761
This format is new in bzr 0.15, but shouldn't be used for real data,
1764
This class acts as it's own BranchFormat.
1767
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1770
def get_format_string(cls):
1771
"""See BranchFormat.get_format_string()."""
1772
return "Bazaar-NG branch format experimental\n"
1775
def get_format_description(cls):
1776
"""See BranchFormat.get_format_description()."""
1777
return "Experimental branch format"
1780
def get_reference(cls, a_bzrdir):
1781
"""Get the target reference of the branch in a_bzrdir.
1783
format probing must have been completed before calling
1784
this method - it is assumed that the format of the branch
1785
in a_bzrdir is correct.
1787
:param a_bzrdir: The bzrdir to get the branch data from.
1788
:return: None if the branch is not a reference branch.
1793
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1795
branch_transport = a_bzrdir.get_branch_transport(cls)
1796
control_files = lockable_files.LockableFiles(branch_transport,
1797
lock_filename, lock_class)
1798
control_files.create_lock()
1799
control_files.lock_write()
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')
1801
for filename, content in utf8_files:
1802
control_files.put_utf8(filename, content)
1804
control_files.unlock()
1807
def initialize(cls, a_bzrdir):
1808
"""Create a branch of this format in a_bzrdir."""
1809
utf8_files = [('format', cls.get_format_string()),
1810
('revision-history', ''),
1811
('branch-name', ''),
1814
cls._initialize_control_files(a_bzrdir, utf8_files,
1815
'lock', lockdir.LockDir)
1816
return cls.open(a_bzrdir, _found=True)
1819
def open(cls, a_bzrdir, _found=False):
1820
"""Return the branch object for a_bzrdir
1822
_found is a private parameter, do not use it. It is used to indicate
1823
if format probing has already be done.
1826
format = BranchFormat.find_format(a_bzrdir)
1827
assert format.__class__ == cls
1828
transport = a_bzrdir.get_branch_transport(None)
1829
control_files = lockable_files.LockableFiles(transport, 'lock',
1831
return cls(_format=cls,
1832
_control_files=control_files,
1834
_repository=a_bzrdir.find_repository())
1837
def is_supported(cls):
1840
def _make_tags(self):
1841
return BasicTags(self)
1844
def supports_tags(cls):
1848
BranchFormat.register_format(BzrBranchExperimental)
1851
class BzrBranch6(BzrBranch5):
1854
def last_revision_info(self):
1855
revision_string = self.control_files.get('last-revision').read()
2679
1856
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2680
1857
revision_id = cache_utf8.get_cached_utf8(revision_id)
2681
1858
revno = int(revno)
2682
1859
return revno, revision_id
1861
def last_revision(self):
1862
"""Return last revision id, or None"""
1863
revision_id = self.last_revision_info()[1]
1864
if revision_id == _mod_revision.NULL_REVISION:
2684
1868
def _write_last_revision_info(self, revno, revision_id):
2685
1869
"""Simply write out the revision id, with no checks.
2690
1874
Intended to be called by set_last_revision_info and
2691
1875
_write_revision_history.
2693
revision_id = _mod_revision.ensure_null(revision_id)
1877
if revision_id is None:
1878
revision_id = 'null:'
2694
1879
out_string = '%d %s\n' % (revno, revision_id)
2695
self._transport.put_bytes('last-revision', out_string,
2696
mode=self.bzrdir._get_file_mode())
1880
self.control_files.put_bytes('last-revision', out_string)
2698
1882
@needs_write_lock
2699
1883
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()
1884
revision_id = osutils.safe_revision_id(revision_id)
2702
1885
if self._get_append_revisions_only():
2703
1886
self._check_history_violation(revision_id)
2704
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2705
1887
self._write_last_revision_info(revno, revision_id)
2706
1888
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
1890
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):
1891
last_revision = self.last_revision()
1892
if last_revision is None:
2726
1894
if last_revision not in self._lefthand_history(revision_id):
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1895
raise errors.AppendRevisionsOnlyViolation(self.base)
2729
1897
def _gen_revision_history(self):
2730
1898
"""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))
1900
history = list(self.repository.iter_reverse_revision_history(
1901
self.last_revision()))
2736
1905
def _write_revision_history(self, history):
2737
1906
"""Factored out of set_revision_history.
2759
1947
"""Set the parent branch"""
2760
1948
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
1950
def set_push_location(self, location):
2838
1951
"""See Branch.set_push_location."""
2839
1952
self._set_config_location('push_location', location)
2872
1985
"""See Branch.get_old_bound_location"""
2873
1986
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)
1988
def set_append_revisions_only(self, enabled):
1993
self.get_config().set_user_option('append_revisions_only', value)
2884
1995
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]
1996
value = self.get_config().get_user_option('append_revisions_only')
1997
return value == 'True'
1999
def _synchronize_history(self, destination, revision_id):
2000
"""Synchronize last revision and revision history between branches.
2002
This version is most efficient when the destination is also a
2003
BzrBranch6, but works for BzrBranch5, as long as the destination's
2004
repository contains all the lefthand ancestors of the intended
2005
last_revision. If not, set_last_revision_info will fail.
2007
:param destination: The branch to copy the history into
2008
:param revision_id: The revision-id to truncate history at. May
2009
be None to copy complete history.
2011
if revision_id is None:
2012
revno, revision_id = self.last_revision_info()
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,
2014
revno = self.revision_id_to_revno(revision_id)
2015
destination.set_last_revision_info(revno, revision_id)
2017
def _make_tags(self):
2018
return BasicTags(self)
2021
class BranchTestProviderAdapter(object):
2022
"""A tool to generate a suite testing multiple branch formats at once.
2024
This is done by copying the test once for each transport and injecting
2025
the transport_server, transport_readonly_server, and branch_format
2026
classes into each copy. Each copy is also given a new id() to make it
2953
def get_stacked_on_url(self):
2954
raise errors.UnstackableBranchFormat(self._format, self.user_url)
2030
def __init__(self, transport_server, transport_readonly_server, formats,
2031
vfs_transport_factory=None):
2032
self._transport_server = transport_server
2033
self._transport_readonly_server = transport_readonly_server
2034
self._formats = formats
2036
def adapt(self, test):
2037
result = TestSuite()
2038
for branch_format, bzrdir_format in self._formats:
2039
new_test = deepcopy(test)
2040
new_test.transport_server = self._transport_server
2041
new_test.transport_readonly_server = self._transport_readonly_server
2042
new_test.bzrdir_format = bzrdir_format
2043
new_test.branch_format = branch_format
2044
def make_new_test_id():
2045
# the format can be either a class or an instance
2046
name = getattr(branch_format, '__name__',
2047
branch_format.__class__.__name__)
2048
new_id = "%s(%s)" % (new_test.id(), name)
2049
return lambda: new_id
2050
new_test.id = make_new_test_id()
2051
result.addTest(new_test)
2957
2055
######################################################################
3068
2153
new_branch.tags._set_tag_dict({})
3070
2155
# 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())
2156
new_branch.control_files.put_utf8('format',
2157
format.get_format_string())
3075
2159
# Clean up old files
3076
new_branch._transport.delete('revision-history')
2160
new_branch.control_files._transport.delete('revision-history')
3078
2162
branch.set_parent(None)
3079
except errors.NoSuchFile:
3081
2165
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)
added
removed
bzrlib/branch.py
