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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, token=None):
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"""Lock the branch for write operations.
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:param token: A token to permit reacquiring a previously held and
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:return: A BranchWriteLockResult.
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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def lock_read(self):
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"""Lock the branch for read operations.
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:return: An object with an unlock method which will release the lock
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raise NotImplementedError(self.lock_read)
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def unlock(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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:return: A dictionary mapping revision_id => dotted revno.
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last_revision = self.last_revision()
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revision_graph = self.repository.get_revision_graph(last_revision)
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merge_sorted_revisions = tsort.merge_sort(
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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for seq_num, rev_id, depth, revno, end_of_merge
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in merge_sorted_revisions)
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
424
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.
439
(If required, that ought to be done at higher layers.)
441
:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
445
* depth: How many levels of merging deep this node has been
447
* 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
453
part of a different merge.
455
# Note: depth and revno values are in the context of the branch so
456
# 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
468
# start_revision_id ancestry.
469
filtered = self._filter_start_non_ancestors(filtered)
470
if direction == 'reverse':
472
if direction == 'forward':
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return reversed(list(filtered))
475
raise ValueError('invalid direction %r' % direction)
477
def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
478
start_revision_id, stop_revision_id, stop_rule):
479
"""Iterate over an inclusive range of sorted revisions."""
480
rev_iter = iter(merge_sorted_revisions)
481
if start_revision_id is not None:
482
for node in rev_iter:
483
rev_id = node.key[-1]
484
if rev_id != start_revision_id:
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# The decision to include the start or not
488
# depends on the stop_rule if a stop is provided
489
# so pop this node back into the iterator
490
rev_iter = chain(iter([node]), rev_iter)
492
if stop_revision_id is None:
494
for node in rev_iter:
495
rev_id = node.key[-1]
496
yield (rev_id, node.merge_depth, node.revno,
498
elif stop_rule == 'exclude':
499
for node in rev_iter:
500
rev_id = node.key[-1]
501
if rev_id == stop_revision_id:
503
yield (rev_id, node.merge_depth, node.revno,
505
elif stop_rule == 'include':
506
for node in rev_iter:
507
rev_id = node.key[-1]
508
yield (rev_id, node.merge_depth, node.revno,
510
if rev_id == stop_revision_id:
512
elif stop_rule == 'with-merges-without-common-ancestry':
513
# We want to exclude all revisions that are already part of the
514
# stop_revision_id ancestry.
515
graph = self.repository.get_graph()
516
ancestors = graph.find_unique_ancestors(start_revision_id,
518
for node in rev_iter:
519
rev_id = node.key[-1]
520
if rev_id not in ancestors:
522
yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'with-merges':
525
stop_rev = self.repository.get_revision(stop_revision_id)
526
if stop_rev.parent_ids:
527
left_parent = stop_rev.parent_ids[0]
529
left_parent = _mod_revision.NULL_REVISION
530
# left_parent is the actual revision we want to stop logging at,
531
# since we want to show the merged revisions after the stop_rev too
532
reached_stop_revision_id = False
533
revision_id_whitelist = []
534
for node in rev_iter:
535
rev_id = node.key[-1]
536
if rev_id == left_parent:
537
# reached the left parent after the stop_revision
539
if (not reached_stop_revision_id or
540
rev_id in revision_id_whitelist):
541
yield (rev_id, node.merge_depth, node.revno,
543
if reached_stop_revision_id or rev_id == stop_revision_id:
544
# only do the merged revs of rev_id from now on
545
rev = self.repository.get_revision(rev_id)
547
reached_stop_revision_id = True
548
revision_id_whitelist.extend(rev.parent_ids)
550
raise ValueError('invalid stop_rule %r' % stop_rule)
552
def _filter_start_non_ancestors(self, rev_iter):
553
# If we started from a dotted revno, we want to consider it as a tip
554
# and don't want to yield revisions that are not part of its
555
# ancestry. Given the order guaranteed by the merge sort, we will see
556
# uninteresting descendants of the first parent of our tip before the
558
first = rev_iter.next()
559
(rev_id, merge_depth, revno, end_of_merge) = first
562
# We start at a mainline revision so by definition, all others
563
# revisions in rev_iter are ancestors
564
for node in rev_iter:
569
pmap = self.repository.get_parent_map([rev_id])
570
parents = pmap.get(rev_id, [])
572
whitelist.update(parents)
574
# If there is no parents, there is nothing of interest left
576
# FIXME: It's hard to test this scenario here as this code is never
577
# called in that case. -- vila 20100322
580
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
582
if rev_id in whitelist:
583
pmap = self.repository.get_parent_map([rev_id])
584
parents = pmap.get(rev_id, [])
585
whitelist.remove(rev_id)
586
whitelist.update(parents)
588
# We've reached the mainline, there is nothing left to
592
# A revision that is not part of the ancestry of our
595
yield (rev_id, merge_depth, revno, end_of_merge)
597
242
def leave_lock_in_place(self):
598
243
"""Tell this branch object not to release the physical lock when this
599
244
object is unlocked.
601
246
If lock_write doesn't return a token, then this method is not supported.
603
248
self.control_files.leave_in_place()
709
352
The delta is relative to its mainline predecessor, or the
710
353
empty tree for revision 1.
355
assert isinstance(revno, int)
712
356
rh = self.revision_history()
713
357
if not (1 <= revno <= len(rh)):
714
raise errors.InvalidRevisionNumber(revno)
358
raise InvalidRevisionNumber(revno)
715
359
return self.repository.get_revision_delta(rh[revno-1])
717
def get_stacked_on_url(self):
718
"""Get the URL this branch is stacked against.
361
@deprecated_method(zero_sixteen)
362
def get_root_id(self):
363
"""Return the id of this branches root
720
:raises NotStacked: If the branch is not stacked.
721
:raises UnstackableBranchFormat: If the branch does not support
365
Deprecated: branches don't have root ids-- trees do.
366
Use basis_tree().get_root_id() instead.
724
raise NotImplementedError(self.get_stacked_on_url)
368
raise NotImplementedError(self.get_root_id)
726
370
def print_file(self, file, revision_id):
727
371
"""Print `file` to stdout."""
728
372
raise NotImplementedError(self.print_file)
374
def append_revision(self, *revision_ids):
375
raise NotImplementedError(self.append_revision)
730
377
def set_revision_history(self, rev_history):
731
378
raise NotImplementedError(self.set_revision_history)
734
def set_parent(self, url):
735
"""See Branch.set_parent."""
736
# TODO: Maybe delete old location files?
737
# URLs should never be unicode, even on the local fs,
738
# FIXUP this and get_parent in a future branch format bump:
739
# read and rewrite the file. RBC 20060125
741
if isinstance(url, unicode):
743
url = url.encode('ascii')
744
except UnicodeEncodeError:
745
raise errors.InvalidURL(url,
746
"Urls must be 7-bit ascii, "
747
"use bzrlib.urlutils.escape")
748
url = urlutils.relative_url(self.base, url)
749
self._set_parent_location(url)
752
def set_stacked_on_url(self, url):
753
"""Set the URL this branch is stacked against.
755
:raises UnstackableBranchFormat: If the branch does not support
757
:raises UnstackableRepositoryFormat: If the repository does not support
760
if not self._format.supports_stacking():
761
raise errors.UnstackableBranchFormat(self._format, self.user_url)
762
# XXX: Changing from one fallback repository to another does not check
763
# that all the data you need is present in the new fallback.
764
# Possibly it should.
765
self._check_stackable_repo()
768
old_url = self.get_stacked_on_url()
769
except (errors.NotStacked, errors.UnstackableBranchFormat,
770
errors.UnstackableRepositoryFormat):
774
self._activate_fallback_location(url)
775
# write this out after the repository is stacked to avoid setting a
776
# stacked config that doesn't work.
777
self._set_config_location('stacked_on_location', url)
780
"""Change a branch to be unstacked, copying data as needed.
782
Don't call this directly, use set_stacked_on_url(None).
784
pb = ui.ui_factory.nested_progress_bar()
786
pb.update("Unstacking")
787
# The basic approach here is to fetch the tip of the branch,
788
# including all available ghosts, from the existing stacked
789
# repository into a new repository object without the fallbacks.
791
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
792
# correct for CHKMap repostiories
793
old_repository = self.repository
794
if len(old_repository._fallback_repositories) != 1:
795
raise AssertionError("can't cope with fallback repositories "
796
"of %r" % (self.repository,))
797
# unlock it, including unlocking the fallback
798
old_repository.unlock()
799
old_repository.lock_read()
801
# Repositories don't offer an interface to remove fallback
802
# repositories today; take the conceptually simpler option and just
803
# reopen it. We reopen it starting from the URL so that we
804
# get a separate connection for RemoteRepositories and can
805
# stream from one of them to the other. This does mean doing
806
# separate SSH connection setup, but unstacking is not a
807
# common operation so it's tolerable.
808
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
809
new_repository = new_bzrdir.find_repository()
810
self.repository = new_repository
811
if self.repository._fallback_repositories:
812
raise AssertionError("didn't expect %r to have "
813
"fallback_repositories"
814
% (self.repository,))
815
# this is not paired with an unlock because it's just restoring
816
# the previous state; the lock's released when set_stacked_on_url
818
self.repository.lock_write()
819
# XXX: If you unstack a branch while it has a working tree
820
# with a pending merge, the pending-merged revisions will no
821
# longer be present. You can (probably) revert and remerge.
823
# XXX: This only fetches up to the tip of the repository; it
824
# doesn't bring across any tags. That's fairly consistent
825
# with how branch works, but perhaps not ideal.
826
self.repository.fetch(old_repository,
827
revision_id=self.last_revision(),
830
old_repository.unlock()
834
def _set_tags_bytes(self, bytes):
835
"""Mirror method for _get_tags_bytes.
837
:seealso: Branch._get_tags_bytes.
839
return _run_with_write_locked_target(self, self._transport.put_bytes,
842
380
def _cache_revision_history(self, rev_history):
843
381
"""Set the cached revision history to rev_history.
953
486
common_index = min(self_len, other_len) -1
954
487
if common_index >= 0 and \
955
488
self_history[common_index] != other_history[common_index]:
956
raise errors.DivergedBranches(self, other)
489
raise DivergedBranches(self, other)
958
491
if stop_revision is None:
959
492
stop_revision = other_len
494
assert isinstance(stop_revision, int)
961
495
if stop_revision > other_len:
962
496
raise errors.NoSuchRevision(self, stop_revision)
963
497
return other_history[self_len:stop_revision]
966
def update_revisions(self, other, stop_revision=None, overwrite=False,
499
def update_revisions(self, other, stop_revision=None):
968
500
"""Pull in new perfect-fit revisions.
970
502
:param other: Another Branch to pull from
971
503
:param stop_revision: Updated until the given revision
972
:param overwrite: Always set the branch pointer, rather than checking
973
to see if it is a proper descendant.
974
:param graph: A Graph object that can be used to query history
975
information. This can be None.
978
return InterBranch.get(other, self).update_revisions(stop_revision,
981
def import_last_revision_info(self, source_repo, revno, revid):
982
"""Set the last revision info, importing from another repo if necessary.
984
This is used by the bound branch code to upload a revision to
985
the master branch first before updating the tip of the local branch.
987
:param source_repo: Source repository to optionally fetch from
988
:param revno: Revision number of the new tip
989
:param revid: Revision id of the new tip
991
if not self.repository.has_same_location(source_repo):
992
self.repository.fetch(source_repo, revision_id=revid)
993
self.set_last_revision_info(revno, revid)
506
raise NotImplementedError(self.update_revisions)
995
508
def revision_id_to_revno(self, revision_id):
996
509
"""Given a revision id, return its revno"""
997
if _mod_revision.is_null(revision_id):
510
if revision_id is None:
512
revision_id = osutils.safe_revision_id(revision_id)
999
513
history = self.revision_history()
1001
515
return history.index(revision_id) + 1
1002
516
except ValueError:
1003
517
raise errors.NoSuchRevision(self, revision_id)
1006
519
def get_rev_id(self, revno, history=None):
1007
520
"""Find the revision id of the specified revno."""
1009
return _mod_revision.NULL_REVISION
1010
last_revno, last_revid = self.last_revision_info()
1011
if revno == last_revno:
1013
if revno <= 0 or revno > last_revno:
524
history = self.revision_history()
525
if revno <= 0 or revno > len(history):
1014
526
raise errors.NoSuchRevision(self, revno)
1015
distance_from_last = last_revno - revno
1016
if len(self._partial_revision_history_cache) <= distance_from_last:
1017
self._extend_partial_history(distance_from_last)
1018
return self._partial_revision_history_cache[distance_from_last]
527
return history[revno - 1]
1021
def pull(self, source, overwrite=False, stop_revision=None,
1022
possible_transports=None, *args, **kwargs):
529
def pull(self, source, overwrite=False, stop_revision=None):
1023
530
"""Mirror source into this branch.
1025
532
This branch is considered to be 'local', having low latency.
1027
534
:returns: PullResult instance
1029
return InterBranch.get(source, self).pull(overwrite=overwrite,
1030
stop_revision=stop_revision,
1031
possible_transports=possible_transports, *args, **kwargs)
536
raise NotImplementedError(self.pull)
1033
def push(self, target, overwrite=False, stop_revision=None, *args,
538
def push(self, target, overwrite=False, stop_revision=None):
1035
539
"""Mirror this branch into target.
1037
541
This branch is considered to be 'local', having low latency.
1039
return InterBranch.get(self, target).push(overwrite, stop_revision,
1042
def lossy_push(self, target, stop_revision=None):
1043
"""Push deltas into another branch.
1045
:note: This does not, like push, retain the revision ids from
1046
the source branch and will, rather than adding bzr-specific
1047
metadata, push only those semantics of the revision that can be
1048
natively represented by this branch' VCS.
1050
:param target: Target branch
1051
:param stop_revision: Revision to push, defaults to last revision.
1052
:return: BranchPushResult with an extra member revidmap:
1053
A dictionary mapping revision ids from the target branch
1054
to new revision ids in the target branch, for each
1055
revision that was pushed.
1057
inter = InterBranch.get(self, target)
1058
lossy_push = getattr(inter, "lossy_push", None)
1059
if lossy_push is None:
1060
raise errors.LossyPushToSameVCS(self, target)
1061
return lossy_push(stop_revision)
543
raise NotImplementedError(self.push)
1063
545
def basis_tree(self):
1064
546
"""Return `Tree` object for last revision."""
1065
547
return self.repository.revision_tree(self.last_revision())
549
def rename_one(self, from_rel, to_rel):
552
This can change the directory or the filename or both.
554
raise NotImplementedError(self.rename_one)
556
def move(self, from_paths, to_name):
559
to_name must exist as a versioned directory.
561
If to_name exists and is a directory, the files are moved into
562
it, keeping their old names. If it is a directory,
564
Note that to_name is only the last component of the new name;
565
this doesn't change the directory.
567
This returns a list of (from_path, to_path) pairs for each
570
raise NotImplementedError(self.move)
1067
572
def get_parent(self):
1068
573
"""Return the parent location of the branch.
1070
This is the default location for pull/missing. The usual
575
This is the default location for push/pull/missing. The usual
1071
576
pattern is that the user can override it by specifying a
1074
parent = self._get_parent_location()
1077
# This is an old-format absolute path to a local branch
1078
# turn it into a url
1079
if parent.startswith('/'):
1080
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1082
return urlutils.join(self.base[:-1], parent)
1083
except errors.InvalidURLJoin, e:
1084
raise errors.InaccessibleParent(parent, self.user_url)
1086
def _get_parent_location(self):
1087
raise NotImplementedError(self._get_parent_location)
579
raise NotImplementedError(self.get_parent)
1089
581
def _set_config_location(self, name, url, config=None,
1090
582
make_relative=False):
1191
659
self.check_real_revno(revno)
1193
661
def check_real_revno(self, revno):
1195
663
Check whether a revno corresponds to a real revision.
1196
664
Zero (the NULL revision) is considered invalid
1198
666
if revno < 1 or revno > self.revno():
1199
raise errors.InvalidRevisionNumber(revno)
667
raise InvalidRevisionNumber(revno)
1201
669
@needs_read_lock
1202
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
670
def clone(self, to_bzrdir, revision_id=None):
1203
671
"""Clone this branch into to_bzrdir preserving all semantic values.
1205
Most API users will want 'create_clone_on_transport', which creates a
1206
new bzrdir and branch on the fly.
1208
673
revision_id: if not None, the revision history in the new branch will
1209
674
be truncated to end with revision_id.
1211
result = to_bzrdir.create_branch()
1214
if repository_policy is not None:
1215
repository_policy.configure_branch(result)
1216
self.copy_content_into(result, revision_id=revision_id)
676
result = self._format.initialize(to_bzrdir)
677
self.copy_content_into(result, revision_id=revision_id)
1221
680
@needs_read_lock
1222
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
681
def sprout(self, to_bzrdir, revision_id=None):
1223
682
"""Create a new line of development from the branch, into to_bzrdir.
1225
to_bzrdir controls the branch format.
1227
684
revision_id: if not None, the revision history in the new branch will
1228
685
be truncated to end with revision_id.
1230
if (repository_policy is not None and
1231
repository_policy.requires_stacking()):
1232
to_bzrdir._format.require_stacking(_skip_repo=True)
1233
result = to_bzrdir.create_branch()
1236
if repository_policy is not None:
1237
repository_policy.configure_branch(result)
1238
self.copy_content_into(result, revision_id=revision_id)
1239
result.set_parent(self.bzrdir.root_transport.base)
687
result = self._format.initialize(to_bzrdir)
688
self.copy_content_into(result, revision_id=revision_id)
689
result.set_parent(self.bzrdir.root_transport.base)
1244
692
def _synchronize_history(self, destination, revision_id):
1245
693
"""Synchronize last revision and revision history between branches.
1247
695
This version is most efficient when the destination is also a
1248
BzrBranch6, but works for BzrBranch5, as long as the destination's
1249
repository contains all the lefthand ancestors of the intended
1250
last_revision. If not, set_last_revision_info will fail.
696
BzrBranch5, but works for BzrBranch6 as long as the revision
697
history is the true lefthand parent history, and all of the revisions
698
are in the destination's repository. If not, set_revision_history
1252
701
:param destination: The branch to copy the history into
1253
702
:param revision_id: The revision-id to truncate history at. May
1254
703
be None to copy complete history.
1256
source_revno, source_revision_id = self.last_revision_info()
1257
if revision_id is None:
1258
revno, revision_id = source_revno, source_revision_id
1260
graph = self.repository.get_graph()
705
new_history = self.revision_history()
706
if revision_id is not None:
707
revision_id = osutils.safe_revision_id(revision_id)
1262
revno = graph.find_distance_to_null(revision_id,
1263
[(source_revision_id, source_revno)])
1264
except errors.GhostRevisionsHaveNoRevno:
1265
# Default to 1, if we can't find anything else
1267
destination.set_last_revision_info(revno, revision_id)
709
new_history = new_history[:new_history.index(revision_id) + 1]
711
rev = self.repository.get_revision(revision_id)
712
new_history = rev.get_history(self.repository)[1:]
713
destination.set_revision_history(new_history)
1269
715
@needs_read_lock
1270
716
def copy_content_into(self, destination, revision_id=None):
1284
729
destination.set_parent(parent)
1285
if self._push_should_merge_tags():
1286
self.tags.merge_to(destination.tags)
1288
def update_references(self, target):
1289
if not getattr(self._format, 'supports_reference_locations', False):
1291
reference_dict = self._get_all_reference_info()
1292
if len(reference_dict) == 0:
1294
old_base = self.base
1295
new_base = target.base
1296
target_reference_dict = target._get_all_reference_info()
1297
for file_id, (tree_path, branch_location) in (
1298
reference_dict.items()):
1299
branch_location = urlutils.rebase_url(branch_location,
1301
target_reference_dict.setdefault(
1302
file_id, (tree_path, branch_location))
1303
target._set_all_reference_info(target_reference_dict)
730
self.tags.merge_to(destination.tags)
1305
732
@needs_read_lock
1306
def check(self, refs):
1307
734
"""Check consistency of the branch.
1309
736
In particular this checks that revisions given in the revision-history
1310
do actually match up in the revision graph, and that they're all
737
do actually match up in the revision graph, and that they're all
1311
738
present in the repository.
1313
740
Callers will typically also want to check the repository.
1315
:param refs: Calculated refs for this branch as specified by
1316
branch._get_check_refs()
1317
742
:return: A BranchCheckResult.
1319
result = BranchCheckResult(self)
1320
last_revno, last_revision_id = self.last_revision_info()
1321
actual_revno = refs[('lefthand-distance', last_revision_id)]
1322
if actual_revno != last_revno:
1323
result.errors.append(errors.BzrCheckError(
1324
'revno does not match len(mainline) %s != %s' % (
1325
last_revno, actual_revno)))
1326
# TODO: We should probably also check that self.revision_history
1327
# matches the repository for older branch formats.
1328
# If looking for the code that cross-checks repository parents against
1329
# the iter_reverse_revision_history output, that is now a repository
744
mainline_parent_id = None
745
for revision_id in self.revision_history():
747
revision = self.repository.get_revision(revision_id)
748
except errors.NoSuchRevision, e:
749
raise errors.BzrCheckError("mainline revision {%s} not in repository"
751
# In general the first entry on the revision history has no parents.
752
# But it's not illegal for it to have parents listed; this can happen
753
# in imports from Arch when the parents weren't reachable.
754
if mainline_parent_id is not None:
755
if mainline_parent_id not in revision.parent_ids:
756
raise errors.BzrCheckError("previous revision {%s} not listed among "
758
% (mainline_parent_id, revision_id))
759
mainline_parent_id = revision_id
760
return BranchCheckResult(self)
1333
762
def _get_checkout_format(self):
1334
763
"""Return the most suitable metadir for a checkout of this branch.
1414
810
basis_tree.unlock()
1418
def reconcile(self, thorough=True):
1419
"""Make sure the data stored in this branch is consistent."""
1420
from bzrlib.reconcile import BranchReconciler
1421
reconciler = BranchReconciler(self, thorough=thorough)
1422
reconciler.reconcile()
1425
def reference_parent(self, file_id, path, possible_transports=None):
813
def reference_parent(self, file_id, path):
1426
814
"""Return the parent branch for a tree-reference file_id
1427
815
:param file_id: The file_id of the tree reference
1428
816
:param path: The path of the file_id in the tree
1429
817
:return: A branch associated with the file_id
1431
819
# FIXME should provide multiple branches, based on config
1432
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1433
possible_transports=possible_transports)
820
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1435
822
def supports_tags(self):
1436
823
return self._format.supports_tags()
1438
def automatic_tag_name(self, revision_id):
1439
"""Try to automatically find the tag name for a revision.
1441
:param revision_id: Revision id of the revision.
1442
:return: A tag name or None if no tag name could be determined.
1444
for hook in Branch.hooks['automatic_tag_name']:
1445
ret = hook(self, revision_id)
1450
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1452
"""Ensure that revision_b is a descendant of revision_a.
1454
This is a helper function for update_revisions.
1456
:raises: DivergedBranches if revision_b has diverged from revision_a.
1457
:returns: True if revision_b is a descendant of revision_a.
1459
relation = self._revision_relations(revision_a, revision_b, graph)
1460
if relation == 'b_descends_from_a':
1462
elif relation == 'diverged':
1463
raise errors.DivergedBranches(self, other_branch)
1464
elif relation == 'a_descends_from_b':
1467
raise AssertionError("invalid relation: %r" % (relation,))
1469
def _revision_relations(self, revision_a, revision_b, graph):
1470
"""Determine the relationship between two revisions.
1472
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1474
heads = graph.heads([revision_a, revision_b])
1475
if heads == set([revision_b]):
1476
return 'b_descends_from_a'
1477
elif heads == set([revision_a, revision_b]):
1478
# These branches have diverged
1480
elif heads == set([revision_a]):
1481
return 'a_descends_from_b'
1483
raise AssertionError("invalid heads: %r" % (heads,))
1486
826
class BranchFormat(object):
1487
827
"""An encapsulation of the initialization and open routines for a format.
1596
912
control_files = lockable_files.LockableFiles(branch_transport,
1597
913
lock_name, lock_class)
1598
914
control_files.create_lock()
1600
control_files.lock_write()
1601
except errors.LockContention:
1602
if lock_type != 'branch4':
915
control_files.lock_write()
1608
utf8_files += [('format', self.get_format_string())]
917
control_files.put_utf8('format', self.get_format_string())
1610
for (filename, content) in utf8_files:
1611
branch_transport.put_bytes(
1613
mode=a_bzrdir._get_file_mode())
919
for file, content in utf8_files:
920
control_files.put_utf8(file, content)
1616
control_files.unlock()
1617
branch = self.open(a_bzrdir, name, _found=True)
1618
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
922
control_files.unlock()
923
return self.open(a_bzrdir, _found=True)
1621
def initialize(self, a_bzrdir, name=None):
1622
"""Create a branch of this format in a_bzrdir.
1624
:param name: Name of the colocated branch to create.
925
def initialize(self, a_bzrdir):
926
"""Create a branch of this format in a_bzrdir."""
1626
927
raise NotImplementedError(self.initialize)
1628
929
def is_supported(self):
1629
930
"""Is this format supported?
1631
932
Supported formats can be initialized and opened.
1632
Unsupported formats may not support initialization or committing or
933
Unsupported formats may not support initialization or committing or
1633
934
some other features depending on the reason for not being supported.
1637
def make_tags(self, branch):
1638
"""Create a tags object for branch.
1640
This method is on BranchFormat, because BranchFormats are reflected
1641
over the wire via network_name(), whereas full Branch instances require
1642
multiple VFS method calls to operate at all.
1644
The default implementation returns a disabled-tags instance.
1646
Note that it is normal for branch to be a RemoteBranch when using tags
1649
return DisabledTags(branch)
1651
def network_name(self):
1652
"""A simple byte string uniquely identifying this format for RPC calls.
1654
MetaDir branch formats use their disk format string to identify the
1655
repository over the wire. All in one formats such as bzr < 0.8, and
1656
foreign formats like svn/git and hg should use some marker which is
1657
unique and immutable.
1659
raise NotImplementedError(self.network_name)
1661
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
938
def open(self, a_bzrdir, _found=False):
1662
939
"""Return the branch object for a_bzrdir
1664
:param a_bzrdir: A BzrDir that contains a branch.
1665
:param name: Name of colocated branch to open
1666
:param _found: a private parameter, do not use it. It is used to
1667
indicate if format probing has already be done.
1668
:param ignore_fallbacks: when set, no fallback branches will be opened
1669
(if there are any). Default is to open fallbacks.
941
_found is a private parameter, do not use it. It is used to indicate
942
if format probing has already be done.
1671
944
raise NotImplementedError(self.open)
1674
947
def register_format(klass, format):
1675
"""Register a metadir format."""
1676
948
klass._formats[format.get_format_string()] = format
1677
# Metadir formats have a network name of their format string, and get
1678
# registered as class factories.
1679
network_format_registry.register(format.get_format_string(), format.__class__)
1682
951
def set_default_format(klass, format):
1683
952
klass._default_format = format
1685
def supports_set_append_revisions_only(self):
1686
"""True if this format supports set_append_revisions_only."""
1689
def supports_stacking(self):
1690
"""True if this format records a stacked-on branch."""
1694
955
def unregister_format(klass, format):
956
assert klass._formats[format.get_format_string()] is format
1695
957
del klass._formats[format.get_format_string()]
1697
959
def __str__(self):
1698
return self.get_format_description().rstrip()
960
return self.get_format_string().rstrip()
1700
962
def supports_tags(self):
1701
963
"""True if this format supports tags stored in the branch"""
1702
964
return False # by default
966
# XXX: Probably doesn't really belong here -- mbp 20070212
967
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
969
branch_transport = a_bzrdir.get_branch_transport(self)
970
control_files = lockable_files.LockableFiles(branch_transport,
971
lock_filename, lock_class)
972
control_files.create_lock()
973
control_files.lock_write()
975
for filename, content in utf8_files:
976
control_files.put_utf8(filename, content)
978
control_files.unlock()
1705
981
class BranchHooks(Hooks):
1706
982
"""A dictionary mapping hook name to a list of callables for branch hooks.
1708
984
e.g. ['set_rh'] Is the list of items to be called when the
1709
985
set_revision_history function is invoked.
1718
994
Hooks.__init__(self)
1719
self.create_hook(HookPoint('set_rh',
1720
"Invoked whenever the revision history has been set via "
1721
"set_revision_history. The api signature is (branch, "
1722
"revision_history), and the branch will be write-locked. "
1723
"The set_rh hook can be expensive for bzr to trigger, a better "
1724
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1725
self.create_hook(HookPoint('open',
1726
"Called with the Branch object that has been opened after a "
1727
"branch is opened.", (1, 8), None))
1728
self.create_hook(HookPoint('post_push',
1729
"Called after a push operation completes. post_push is called "
1730
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1731
"bzr client.", (0, 15), None))
1732
self.create_hook(HookPoint('post_pull',
1733
"Called after a pull operation completes. post_pull is called "
1734
"with a bzrlib.branch.PullResult object and only runs in the "
1735
"bzr client.", (0, 15), None))
1736
self.create_hook(HookPoint('pre_commit',
1737
"Called after a commit is calculated but before it is is "
1738
"completed. pre_commit is called with (local, master, old_revno, "
1739
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1740
"). old_revid is NULL_REVISION for the first commit to a branch, "
1741
"tree_delta is a TreeDelta object describing changes from the "
1742
"basis revision. hooks MUST NOT modify this delta. "
1743
" future_tree is an in-memory tree obtained from "
1744
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1745
"tree.", (0,91), None))
1746
self.create_hook(HookPoint('post_commit',
1747
"Called in the bzr client after a commit has completed. "
1748
"post_commit is called with (local, master, old_revno, old_revid, "
1749
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1750
"commit to a branch.", (0, 15), None))
1751
self.create_hook(HookPoint('post_uncommit',
1752
"Called in the bzr client after an uncommit completes. "
1753
"post_uncommit is called with (local, master, old_revno, "
1754
"old_revid, new_revno, new_revid) where local is the local branch "
1755
"or None, master is the target branch, and an empty branch "
1756
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1757
self.create_hook(HookPoint('pre_change_branch_tip',
1758
"Called in bzr client and server before a change to the tip of a "
1759
"branch is made. pre_change_branch_tip is called with a "
1760
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1761
"commit, uncommit will all trigger this hook.", (1, 6), None))
1762
self.create_hook(HookPoint('post_change_branch_tip',
1763
"Called in bzr client and server after a change to the tip of a "
1764
"branch is made. post_change_branch_tip is called with a "
1765
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1766
"commit, uncommit will all trigger this hook.", (1, 4), None))
1767
self.create_hook(HookPoint('transform_fallback_location',
1768
"Called when a stacked branch is activating its fallback "
1769
"locations. transform_fallback_location is called with (branch, "
1770
"url), and should return a new url. Returning the same url "
1771
"allows it to be used as-is, returning a different one can be "
1772
"used to cause the branch to stack on a closer copy of that "
1773
"fallback_location. Note that the branch cannot have history "
1774
"accessing methods called on it during this hook because the "
1775
"fallback locations have not been activated. When there are "
1776
"multiple hooks installed for transform_fallback_location, "
1777
"all are called with the url returned from the previous hook."
1778
"The order is however undefined.", (1, 9), None))
1779
self.create_hook(HookPoint('automatic_tag_name',
1780
"Called to determine an automatic tag name for a revision."
1781
"automatic_tag_name is called with (branch, revision_id) and "
1782
"should return a tag name or None if no tag name could be "
1783
"determined. The first non-None tag name returned will be used.",
1785
self.create_hook(HookPoint('post_branch_init',
1786
"Called after new branch initialization completes. "
1787
"post_branch_init is called with a "
1788
"bzrlib.branch.BranchInitHookParams. "
1789
"Note that init, branch and checkout (both heavyweight and "
1790
"lightweight) will all trigger this hook.", (2, 2), None))
1791
self.create_hook(HookPoint('post_switch',
1792
"Called after a checkout switches branch. "
1793
"post_switch is called with a "
1794
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
995
# Introduced in 0.15:
996
# invoked whenever the revision history has been set
997
# with set_revision_history. The api signature is
998
# (branch, revision_history), and the branch will
1001
# invoked after a push operation completes.
1002
# the api signature is
1004
# containing the members
1005
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1006
# where local is the local target branch or None, master is the target
1007
# master branch, and the rest should be self explanatory. The source
1008
# is read locked and the target branches write locked. Source will
1009
# be the local low-latency branch.
1010
self['post_push'] = []
1011
# invoked after a pull operation completes.
1012
# the api signature is
1014
# containing the members
1015
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1016
# where local is the local branch or None, master is the target
1017
# master branch, and the rest should be self explanatory. The source
1018
# is read locked and the target branches write locked. The local
1019
# branch is the low-latency branch.
1020
self['post_pull'] = []
1021
# invoked after a commit operation completes.
1022
# the api signature is
1023
# (local, master, old_revno, old_revid, new_revno, new_revid)
1024
# old_revid is NULL_REVISION for the first commit to a branch.
1025
self['post_commit'] = []
1026
# invoked after a uncommit operation completes.
1027
# the api signature is
1028
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1029
# local is the local branch or None, master is the target branch,
1030
# and an empty branch recieves new_revno of 0, new_revid of None.
1031
self['post_uncommit'] = []
1798
1034
# install the default hooks into the Branch class.
1799
1035
Branch.hooks = BranchHooks()
1802
class ChangeBranchTipParams(object):
1803
"""Object holding parameters passed to *_change_branch_tip hooks.
1805
There are 5 fields that hooks may wish to access:
1807
:ivar branch: the branch being changed
1808
:ivar old_revno: revision number before the change
1809
:ivar new_revno: revision number after the change
1810
:ivar old_revid: revision id before the change
1811
:ivar new_revid: revision id after the change
1813
The revid fields are strings. The revno fields are integers.
1816
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1817
"""Create a group of ChangeBranchTip parameters.
1819
:param branch: The branch being changed.
1820
:param old_revno: Revision number before the change.
1821
:param new_revno: Revision number after the change.
1822
:param old_revid: Tip revision id before the change.
1823
:param new_revid: Tip revision id after the change.
1825
self.branch = branch
1826
self.old_revno = old_revno
1827
self.new_revno = new_revno
1828
self.old_revid = old_revid
1829
self.new_revid = new_revid
1831
def __eq__(self, other):
1832
return self.__dict__ == other.__dict__
1835
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1836
self.__class__.__name__, self.branch,
1837
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1840
class BranchInitHookParams(object):
1841
"""Object holding parameters passed to *_branch_init hooks.
1843
There are 4 fields that hooks may wish to access:
1845
:ivar format: the branch format
1846
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1847
:ivar name: name of colocated branch, if any (or None)
1848
:ivar branch: the branch created
1850
Note that for lightweight checkouts, the bzrdir and format fields refer to
1851
the checkout, hence they are different from the corresponding fields in
1852
branch, which refer to the original branch.
1855
def __init__(self, format, a_bzrdir, name, branch):
1856
"""Create a group of BranchInitHook parameters.
1858
:param format: the branch format
1859
:param a_bzrdir: the BzrDir where the branch will be/has been
1861
:param name: name of colocated branch, if any (or None)
1862
:param branch: the branch created
1864
Note that for lightweight checkouts, the bzrdir and format fields refer
1865
to the checkout, hence they are different from the corresponding fields
1866
in branch, which refer to the original branch.
1868
self.format = format
1869
self.bzrdir = a_bzrdir
1871
self.branch = branch
1873
def __eq__(self, other):
1874
return self.__dict__ == other.__dict__
1878
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1880
return "<%s of format:%s bzrdir:%s>" % (
1881
self.__class__.__name__, self.branch,
1882
self.format, self.bzrdir)
1885
class SwitchHookParams(object):
1886
"""Object holding parameters passed to *_switch hooks.
1888
There are 4 fields that hooks may wish to access:
1890
:ivar control_dir: BzrDir of the checkout to change
1891
:ivar to_branch: branch that the checkout is to reference
1892
:ivar force: skip the check for local commits in a heavy checkout
1893
:ivar revision_id: revision ID to switch to (or None)
1896
def __init__(self, control_dir, to_branch, force, revision_id):
1897
"""Create a group of SwitchHook parameters.
1899
:param control_dir: BzrDir of the checkout to change
1900
:param to_branch: branch that the checkout is to reference
1901
:param force: skip the check for local commits in a heavy checkout
1902
:param revision_id: revision ID to switch to (or None)
1904
self.control_dir = control_dir
1905
self.to_branch = to_branch
1907
self.revision_id = revision_id
1909
def __eq__(self, other):
1910
return self.__dict__ == other.__dict__
1913
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1914
self.control_dir, self.to_branch,
1918
1038
class BzrBranchFormat4(BranchFormat):
1919
1039
"""Bzr branch format 4.
1927
1047
"""See BranchFormat.get_format_description()."""
1928
1048
return "Branch format 4"
1930
def initialize(self, a_bzrdir, name=None):
1050
def initialize(self, a_bzrdir):
1931
1051
"""Create a branch of this format in a_bzrdir."""
1932
1052
utf8_files = [('revision-history', ''),
1933
1053
('branch-name', ''),
1935
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1055
return self._initialize_helper(a_bzrdir, utf8_files,
1936
1056
lock_type='branch4', set_format=False)
1938
1058
def __init__(self):
1939
1059
super(BzrBranchFormat4, self).__init__()
1940
1060
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1942
def network_name(self):
1943
"""The network name for this format is the control dirs disk label."""
1944
return self._matchingbzrdir.get_format_string()
1062
def open(self, a_bzrdir, _found=False):
1063
"""Return the branch object for a_bzrdir
1946
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1947
"""See BranchFormat.open()."""
1065
_found is a private parameter, do not use it. It is used to indicate
1066
if format probing has already be done.
1949
1069
# we are being called directly and must probe.
1950
1070
raise NotImplementedError
1951
1071
return BzrBranch(_format=self,
1952
1072
_control_files=a_bzrdir._control_files,
1953
1073
a_bzrdir=a_bzrdir,
1955
1074
_repository=a_bzrdir.open_repository())
1957
1076
def __str__(self):
1958
1077
return "Bazaar-NG branch format 4"
1961
class BranchFormatMetadir(BranchFormat):
1962
"""Common logic for meta-dir based branch formats."""
1964
def _branch_class(self):
1965
"""What class to instantiate on open calls."""
1966
raise NotImplementedError(self._branch_class)
1968
def network_name(self):
1969
"""A simple byte string uniquely identifying this format for RPC calls.
1971
Metadir branch formats use their format string.
1080
class BzrBranchFormat5(BranchFormat):
1081
"""Bzr branch format 5.
1084
- a revision-history file.
1086
- a lock dir guarding the branch itself
1087
- all of this stored in a branch/ subdirectory
1088
- works with shared repositories.
1090
This format is new in bzr 0.8.
1093
def get_format_string(self):
1094
"""See BranchFormat.get_format_string()."""
1095
return "Bazaar-NG branch format 5\n"
1097
def get_format_description(self):
1098
"""See BranchFormat.get_format_description()."""
1099
return "Branch format 5"
1101
def initialize(self, a_bzrdir):
1102
"""Create a branch of this format in a_bzrdir."""
1103
utf8_files = [('revision-history', ''),
1104
('branch-name', ''),
1106
return self._initialize_helper(a_bzrdir, utf8_files)
1109
super(BzrBranchFormat5, self).__init__()
1110
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1112
def open(self, a_bzrdir, _found=False):
1113
"""Return the branch object for a_bzrdir
1115
_found is a private parameter, do not use it. It is used to indicate
1116
if format probing has already be done.
1973
return self.get_format_string()
1975
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1976
"""See BranchFormat.open()."""
1978
format = BranchFormat.find_format(a_bzrdir, name=name)
1979
if format.__class__ != self.__class__:
1980
raise AssertionError("wrong format %r found for %r" %
1982
transport = a_bzrdir.get_branch_transport(None, name=name)
1119
format = BranchFormat.find_format(a_bzrdir)
1120
assert format.__class__ == self.__class__
1122
transport = a_bzrdir.get_branch_transport(None)
1984
1123
control_files = lockable_files.LockableFiles(transport, 'lock',
1985
1124
lockdir.LockDir)
1986
return self._branch_class()(_format=self,
1125
return BzrBranch5(_format=self,
1987
1126
_control_files=control_files,
1989
1127
a_bzrdir=a_bzrdir,
1990
_repository=a_bzrdir.find_repository(),
1991
ignore_fallbacks=ignore_fallbacks)
1992
except errors.NoSuchFile:
1993
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1996
super(BranchFormatMetadir, self).__init__()
1997
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1998
self._matchingbzrdir.set_branch_format(self)
2000
def supports_tags(self):
2004
class BzrBranchFormat5(BranchFormatMetadir):
2005
"""Bzr branch format 5.
2008
- a revision-history file.
2010
- a lock dir guarding the branch itself
2011
- all of this stored in a branch/ subdirectory
2012
- works with shared repositories.
2014
This format is new in bzr 0.8.
2017
def _branch_class(self):
2020
def get_format_string(self):
2021
"""See BranchFormat.get_format_string()."""
2022
return "Bazaar-NG branch format 5\n"
2024
def get_format_description(self):
2025
"""See BranchFormat.get_format_description()."""
2026
return "Branch format 5"
2028
def initialize(self, a_bzrdir, name=None):
2029
"""Create a branch of this format in a_bzrdir."""
2030
utf8_files = [('revision-history', ''),
2031
('branch-name', ''),
2033
return self._initialize_helper(a_bzrdir, utf8_files, name)
2035
def supports_tags(self):
2039
class BzrBranchFormat6(BranchFormatMetadir):
2040
"""Branch format with last-revision and tags.
1128
_repository=a_bzrdir.find_repository())
1130
raise NotBranchError(path=transport.base)
1133
class BzrBranchFormat6(BzrBranchFormat5):
1134
"""Branch format with last-revision
2042
1136
Unlike previous formats, this has no explicit revision history. Instead,
2043
1137
this just stores the last-revision, and the left-hand history leading
2044
1138
up to there is the history.
2046
1140
This format was introduced in bzr 0.15
2047
and became the default in 0.91.
2050
def _branch_class(self):
2053
1143
def get_format_string(self):
2054
1144
"""See BranchFormat.get_format_string()."""
2055
1145
return "Bazaar Branch Format 6 (bzr 0.15)\n"
2058
1148
"""See BranchFormat.get_format_description()."""
2059
1149
return "Branch format 6"
2061
def initialize(self, a_bzrdir, name=None):
2062
"""Create a branch of this format in a_bzrdir."""
2063
utf8_files = [('last-revision', '0 null:\n'),
2064
('branch.conf', ''),
2067
return self._initialize_helper(a_bzrdir, utf8_files, name)
2069
def make_tags(self, branch):
2070
"""See bzrlib.branch.BranchFormat.make_tags()."""
2071
return BasicTags(branch)
2073
def supports_set_append_revisions_only(self):
2077
class BzrBranchFormat8(BranchFormatMetadir):
2078
"""Metadir format supporting storing locations of subtree branches."""
2080
def _branch_class(self):
2083
def get_format_string(self):
2084
"""See BranchFormat.get_format_string()."""
2085
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2087
def get_format_description(self):
2088
"""See BranchFormat.get_format_description()."""
2089
return "Branch format 8"
2091
def initialize(self, a_bzrdir, name=None):
2092
"""Create a branch of this format in a_bzrdir."""
2093
utf8_files = [('last-revision', '0 null:\n'),
2094
('branch.conf', ''),
2098
return self._initialize_helper(a_bzrdir, utf8_files, name)
2101
super(BzrBranchFormat8, self).__init__()
2102
self._matchingbzrdir.repository_format = \
2103
RepositoryFormatKnitPack5RichRoot()
2105
def make_tags(self, branch):
2106
"""See bzrlib.branch.BranchFormat.make_tags()."""
2107
return BasicTags(branch)
2109
def supports_set_append_revisions_only(self):
2112
def supports_stacking(self):
2115
supports_reference_locations = True
2118
class BzrBranchFormat7(BzrBranchFormat8):
2119
"""Branch format with last-revision, tags, and a stacked location pointer.
2121
The stacked location pointer is passed down to the repository and requires
2122
a repository format with supports_external_lookups = True.
2124
This format was introduced in bzr 1.6.
2127
def initialize(self, a_bzrdir, name=None):
2128
"""Create a branch of this format in a_bzrdir."""
2129
utf8_files = [('last-revision', '0 null:\n'),
2130
('branch.conf', ''),
2133
return self._initialize_helper(a_bzrdir, utf8_files, name)
2135
def _branch_class(self):
2138
def get_format_string(self):
2139
"""See BranchFormat.get_format_string()."""
2140
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2142
def get_format_description(self):
2143
"""See BranchFormat.get_format_description()."""
2144
return "Branch format 7"
2146
def supports_set_append_revisions_only(self):
2149
supports_reference_locations = False
1151
def initialize(self, a_bzrdir):
1152
"""Create a branch of this format in a_bzrdir."""
1153
utf8_files = [('last-revision', '0 null:\n'),
1154
('branch-name', ''),
1155
('branch.conf', ''),
1158
return self._initialize_helper(a_bzrdir, utf8_files)
1160
def open(self, a_bzrdir, _found=False):
1161
"""Return the branch object for a_bzrdir
1163
_found is a private parameter, do not use it. It is used to indicate
1164
if format probing has already be done.
1167
format = BranchFormat.find_format(a_bzrdir)
1168
assert format.__class__ == self.__class__
1169
transport = a_bzrdir.get_branch_transport(None)
1170
control_files = lockable_files.LockableFiles(transport, 'lock',
1172
return BzrBranch6(_format=self,
1173
_control_files=control_files,
1175
_repository=a_bzrdir.find_repository())
1177
def supports_tags(self):
2152
1181
class BranchReferenceFormat(BranchFormat):
2167
1196
def get_format_description(self):
2168
1197
"""See BranchFormat.get_format_description()."""
2169
1198
return "Checkout reference format 1"
2171
1200
def get_reference(self, a_bzrdir):
2172
1201
"""See BranchFormat.get_reference()."""
2173
1202
transport = a_bzrdir.get_branch_transport(None)
2174
return transport.get_bytes('location')
2176
def set_reference(self, a_bzrdir, to_branch):
2177
"""See BranchFormat.set_reference()."""
2178
transport = a_bzrdir.get_branch_transport(None)
2179
location = transport.put_bytes('location', to_branch.base)
2181
def initialize(self, a_bzrdir, name=None, target_branch=None):
1203
return transport.get('location').read()
1205
def initialize(self, a_bzrdir, target_branch=None):
2182
1206
"""Create a branch of this format in a_bzrdir."""
2183
1207
if target_branch is None:
2184
1208
# this format does not implement branch itself, thus the implicit
2185
1209
# creation contract must see it as uninitializable
2186
1210
raise errors.UninitializableFormat(self)
2187
mutter('creating branch reference in %s', a_bzrdir.user_url)
2188
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1211
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1212
branch_transport = a_bzrdir.get_branch_transport(self)
2189
1213
branch_transport.put_bytes('location',
2190
target_branch.bzrdir.user_url)
1214
target_branch.bzrdir.root_transport.base)
2191
1215
branch_transport.put_bytes('format', self.get_format_string())
2193
a_bzrdir, name, _found=True,
2194
possible_transports=[target_branch.bzrdir.root_transport])
2195
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1216
return self.open(a_bzrdir, _found=True)
2198
1218
def __init__(self):
2199
1219
super(BranchReferenceFormat, self).__init__()
2200
1220
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2201
self._matchingbzrdir.set_branch_format(self)
2203
1222
def _make_reference_clone_function(format, a_branch):
2204
1223
"""Create a clone() routine for a branch dynamically."""
2205
def clone(to_bzrdir, revision_id=None,
2206
repository_policy=None):
1224
def clone(to_bzrdir, revision_id=None):
2207
1225
"""See Branch.clone()."""
2208
return format.initialize(to_bzrdir, target_branch=a_branch)
1226
return format.initialize(to_bzrdir, a_branch)
2209
1227
# cannot obey revision_id limits when cloning a reference ...
2210
1228
# FIXME RBC 20060210 either nuke revision_id for clone, or
2211
1229
# emit some sort of warning/error to the caller ?!
2214
def open(self, a_bzrdir, name=None, _found=False, location=None,
2215
possible_transports=None, ignore_fallbacks=False):
1232
def open(self, a_bzrdir, _found=False, location=None):
2216
1233
"""Return the branch that the branch reference in a_bzrdir points at.
2218
:param a_bzrdir: A BzrDir that contains a branch.
2219
:param name: Name of colocated branch to open, if any
2220
:param _found: a private parameter, do not use it. It is used to
2221
indicate if format probing has already be done.
2222
:param ignore_fallbacks: when set, no fallback branches will be opened
2223
(if there are any). Default is to open fallbacks.
2224
:param location: The location of the referenced branch. If
2225
unspecified, this will be determined from the branch reference in
2227
:param possible_transports: An optional reusable transports list.
1235
_found is a private parameter, do not use it. It is used to indicate
1236
if format probing has already be done.
2230
format = BranchFormat.find_format(a_bzrdir, name=name)
2231
if format.__class__ != self.__class__:
2232
raise AssertionError("wrong format %r found for %r" %
1239
format = BranchFormat.find_format(a_bzrdir)
1240
assert format.__class__ == self.__class__
2234
1241
if location is None:
2235
1242
location = self.get_reference(a_bzrdir)
2236
real_bzrdir = bzrdir.BzrDir.open(
2237
location, possible_transports=possible_transports)
2238
result = real_bzrdir.open_branch(name=name,
2239
ignore_fallbacks=ignore_fallbacks)
1243
real_bzrdir = bzrdir.BzrDir.open(location)
1244
result = real_bzrdir.open_branch()
2240
1245
# this changes the behaviour of result.clone to create a new reference
2241
1246
# rather than a copy of the content of the branch.
2242
1247
# I did not use a proxy object because that needs much more extensive
2252
network_format_registry = registry.FormatRegistry()
2253
"""Registry of formats indexed by their network name.
2255
The network name for a branch format is an identifier that can be used when
2256
referring to formats with smart server operations. See
2257
BranchFormat.network_name() for more detail.
2261
1257
# formats which have no format string are not discoverable
2262
1258
# and not independently creatable, so are not registered.
2263
__format5 = BzrBranchFormat5()
2264
__format6 = BzrBranchFormat6()
2265
__format7 = BzrBranchFormat7()
2266
__format8 = BzrBranchFormat8()
2267
BranchFormat.register_format(__format5)
1259
__default_format = BzrBranchFormat5()
1260
BranchFormat.register_format(__default_format)
2268
1261
BranchFormat.register_format(BranchReferenceFormat())
2269
BranchFormat.register_format(__format6)
2270
BranchFormat.register_format(__format7)
2271
BranchFormat.register_format(__format8)
2272
BranchFormat.set_default_format(__format7)
1262
BranchFormat.register_format(BzrBranchFormat6())
1263
BranchFormat.set_default_format(__default_format)
2273
1264
_legacy_formats = [BzrBranchFormat4(),
2275
network_format_registry.register(
2276
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2279
class BranchWriteLockResult(object):
2280
"""The result of write locking a branch.
2282
:ivar branch_token: The token obtained from the underlying branch lock, or
2284
:ivar unlock: A callable which will unlock the lock.
2287
def __init__(self, unlock, branch_token):
2288
self.branch_token = branch_token
2289
self.unlock = unlock
2292
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2296
class BzrBranch(Branch, _RelockDebugMixin):
1267
class BzrBranch(Branch):
2297
1268
"""A branch stored in the actual filesystem.
2299
1270
Note that it's "local" in the context of the filesystem; it doesn't
2300
1271
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2301
1272
it's writable, and can be accessed via the normal filesystem API.
2303
:ivar _transport: Transport for file operations on this branch's
2304
control files, typically pointing to the .bzr/branch directory.
2305
:ivar repository: Repository for this branch.
2306
:ivar base: The url of the base directory for this branch; the one
2307
containing the .bzr directory.
2308
:ivar name: Optional colocated branch name as it exists in the control
2312
1275
def __init__(self, _format=None,
2313
_control_files=None, a_bzrdir=None, name=None,
2314
_repository=None, ignore_fallbacks=False):
1276
_control_files=None, a_bzrdir=None, _repository=None):
2315
1277
"""Create new branch object at a particular location."""
1278
Branch.__init__(self)
2316
1279
if a_bzrdir is None:
2317
1280
raise ValueError('a_bzrdir must be supplied')
2319
1282
self.bzrdir = a_bzrdir
1283
# self._transport used to point to the directory containing the
1284
# control directory, but was not used - now it's just the transport
1285
# for the branch control files. mbp 20070212
2320
1286
self._base = self.bzrdir.transport.clone('..').base
2322
# XXX: We should be able to just do
2323
# self.base = self.bzrdir.root_transport.base
2324
# but this does not quite work yet -- mbp 20080522
2325
1287
self._format = _format
2326
1288
if _control_files is None:
2327
1289
raise ValueError('BzrBranch _control_files is None')
2328
1290
self.control_files = _control_files
2329
1291
self._transport = _control_files._transport
2330
1292
self.repository = _repository
2331
Branch.__init__(self)
2333
1294
def __str__(self):
2334
if self.name is None:
2335
return '%s(%s)' % (self.__class__.__name__, self.user_url)
2337
return '%s(%s,%s)' % (self.__class__.__name__, self.user_url,
1295
return '%s(%r)' % (self.__class__.__name__, self.base)
2340
1297
__repr__ = __str__
2346
1303
base = property(_get_base, doc="The URL for the root of this branch.")
2348
def _get_config(self):
2349
return TransportConfig(self._transport, 'branch.conf')
1305
def abspath(self, name):
1306
"""See Branch.abspath."""
1307
return self.control_files._transport.abspath(name)
1310
@deprecated_method(zero_sixteen)
1312
def get_root_id(self):
1313
"""See Branch.get_root_id."""
1314
tree = self.repository.revision_tree(self.last_revision())
1315
return tree.inventory.root.file_id
2351
1317
def is_locked(self):
2352
1318
return self.control_files.is_locked()
2354
1320
def lock_write(self, token=None):
2355
"""Lock the branch for write operations.
2357
:param token: A token to permit reacquiring a previously held and
2359
:return: A BranchWriteLockResult.
2361
if not self.is_locked():
2362
self._note_lock('w')
2363
# All-in-one needs to always unlock/lock.
2364
repo_control = getattr(self.repository, 'control_files', None)
2365
if self.control_files == repo_control or not self.is_locked():
2366
self.repository._warn_if_deprecated(self)
2367
self.repository.lock_write()
1321
repo_token = self.repository.lock_write()
2372
return BranchWriteLockResult(self.unlock,
2373
self.control_files.lock_write(token=token))
1323
token = self.control_files.lock_write(token=token)
2376
self.repository.unlock()
1325
self.repository.unlock()
2379
1329
def lock_read(self):
2380
"""Lock the branch for read operations.
2382
:return: An object with an unlock method which will release the lock
2385
if not self.is_locked():
2386
self._note_lock('r')
2387
# All-in-one needs to always unlock/lock.
2388
repo_control = getattr(self.repository, 'control_files', None)
2389
if self.control_files == repo_control or not self.is_locked():
2390
self.repository._warn_if_deprecated(self)
2391
self.repository.lock_read()
1330
self.repository.lock_read()
2396
1332
self.control_files.lock_read()
2400
self.repository.unlock()
1334
self.repository.unlock()
2403
@only_raises(errors.LockNotHeld, errors.LockBroken)
2404
1337
def unlock(self):
1338
# TODO: test for failed two phase locks. This is known broken.
2406
1340
self.control_files.unlock()
2408
# All-in-one needs to always unlock/lock.
2409
repo_control = getattr(self.repository, 'control_files', None)
2410
if (self.control_files == repo_control or
2411
not self.control_files.is_locked()):
2412
self.repository.unlock()
2413
if not self.control_files.is_locked():
2414
# we just released the lock
2415
self._clear_cached_state()
1342
self.repository.unlock()
1343
if not self.control_files.is_locked():
1344
# we just released the lock
1345
self._clear_cached_state()
2417
1347
def peek_lock_mode(self):
2418
1348
if self.control_files._lock_count == 0:
2428
1358
"""See Branch.print_file."""
2429
1359
return self.repository.print_file(file, revision_id)
1362
def append_revision(self, *revision_ids):
1363
"""See Branch.append_revision."""
1364
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1365
for revision_id in revision_ids:
1366
_mod_revision.check_not_reserved_id(revision_id)
1367
mutter("add {%s} to revision-history" % revision_id)
1368
rev_history = self.revision_history()
1369
rev_history.extend(revision_ids)
1370
self.set_revision_history(rev_history)
2431
1372
def _write_revision_history(self, history):
2432
1373
"""Factored out of set_revision_history.
2434
1375
This performs the actual writing to disk.
2435
1376
It is intended to be called by BzrBranch5.set_revision_history."""
2436
self._transport.put_bytes(
2437
'revision-history', '\n'.join(history),
2438
mode=self.bzrdir._get_file_mode())
1377
self.control_files.put_bytes(
1378
'revision-history', '\n'.join(history))
2440
1380
@needs_write_lock
2441
1381
def set_revision_history(self, rev_history):
2442
1382
"""See Branch.set_revision_history."""
2443
if 'evil' in debug.debug_flags:
2444
mutter_callsite(3, "set_revision_history scales with history.")
2445
check_not_reserved_id = _mod_revision.check_not_reserved_id
2446
for rev_id in rev_history:
2447
check_not_reserved_id(rev_id)
2448
if Branch.hooks['post_change_branch_tip']:
2449
# Don't calculate the last_revision_info() if there are no hooks
2451
old_revno, old_revid = self.last_revision_info()
2452
if len(rev_history) == 0:
2453
revid = _mod_revision.NULL_REVISION
2455
revid = rev_history[-1]
2456
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
1383
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1384
self._clear_cached_state()
2457
1385
self._write_revision_history(rev_history)
2458
self._clear_cached_state()
2459
1386
self._cache_revision_history(rev_history)
2460
1387
for hook in Branch.hooks['set_rh']:
2461
1388
hook(self, rev_history)
2462
if Branch.hooks['post_change_branch_tip']:
2463
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2465
def _synchronize_history(self, destination, revision_id):
2466
"""Synchronize last revision and revision history between branches.
2468
This version is most efficient when the destination is also a
2469
BzrBranch5, but works for BzrBranch6 as long as the revision
2470
history is the true lefthand parent history, and all of the revisions
2471
are in the destination's repository. If not, set_revision_history
2474
:param destination: The branch to copy the history into
2475
:param revision_id: The revision-id to truncate history at. May
2476
be None to copy complete history.
2478
if not isinstance(destination._format, BzrBranchFormat5):
2479
super(BzrBranch, self)._synchronize_history(
2480
destination, revision_id)
2482
if revision_id == _mod_revision.NULL_REVISION:
2485
new_history = self.revision_history()
2486
if revision_id is not None and new_history != []:
2488
new_history = new_history[:new_history.index(revision_id) + 1]
2490
rev = self.repository.get_revision(revision_id)
2491
new_history = rev.get_history(self.repository)[1:]
2492
destination.set_revision_history(new_history)
2494
1390
@needs_write_lock
2495
1391
def set_last_revision_info(self, revno, revision_id):
2496
"""Set the last revision of this branch.
2498
The caller is responsible for checking that the revno is correct
2499
for this revision id.
2501
It may be possible to set the branch last revision to an id not
2502
present in the repository. However, branches can also be
2503
configured to check constraints on history, in which case this may not
2506
revision_id = _mod_revision.ensure_null(revision_id)
2507
# this old format stores the full history, but this api doesn't
2508
# provide it, so we must generate, and might as well check it's
1392
revision_id = osutils.safe_revision_id(revision_id)
2510
1393
history = self._lefthand_history(revision_id)
2511
if len(history) != revno:
2512
raise AssertionError('%d != %d' % (len(history), revno))
1394
assert len(history) == revno, '%d != %d' % (len(history), revno)
2513
1395
self.set_revision_history(history)
2515
1397
def _gen_revision_history(self):
2516
history = self._transport.get_bytes('revision-history').split('\n')
1398
history = self.control_files.get('revision-history').read().split('\n')
2517
1399
if history[-1:] == ['']:
2518
1400
# There shouldn't be a trailing newline, but just in case.
1404
def _lefthand_history(self, revision_id, last_rev=None,
1406
# stop_revision must be a descendant of last_revision
1407
stop_graph = self.repository.get_revision_graph(revision_id)
1408
if last_rev is not None and last_rev not in stop_graph:
1409
# our previous tip is not merged into stop_revision
1410
raise errors.DivergedBranches(self, other_branch)
1411
# make a new revision history from the graph
1412
current_rev_id = revision_id
1414
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1415
new_history.append(current_rev_id)
1416
current_rev_id_parents = stop_graph[current_rev_id]
1418
current_rev_id = current_rev_id_parents[0]
1420
current_rev_id = None
1421
new_history.reverse()
2522
1424
@needs_write_lock
2523
1425
def generate_revision_history(self, revision_id, last_rev=None,
2524
1426
other_branch=None):
2530
1432
:param other_branch: The other branch that DivergedBranches should
2531
1433
raise with respect to.
1435
revision_id = osutils.safe_revision_id(revision_id)
2533
1436
self.set_revision_history(self._lefthand_history(revision_id,
2534
1437
last_rev, other_branch))
1440
def update_revisions(self, other, stop_revision=None):
1441
"""See Branch.update_revisions."""
1444
if stop_revision is None:
1445
stop_revision = other.last_revision()
1446
if stop_revision is None:
1447
# if there are no commits, we're done.
1450
stop_revision = osutils.safe_revision_id(stop_revision)
1451
# whats the current last revision, before we fetch [and change it
1453
last_rev = self.last_revision()
1454
# we fetch here regardless of whether we need to so that we pickup
1456
self.fetch(other, stop_revision)
1457
my_ancestry = self.repository.get_ancestry(last_rev,
1459
if stop_revision in my_ancestry:
1460
# last_revision is a descendant of stop_revision
1462
self.generate_revision_history(stop_revision, last_rev=last_rev,
2536
1467
def basis_tree(self):
2537
1468
"""See Branch.basis_tree."""
2538
1469
return self.repository.revision_tree(self.last_revision())
1471
@deprecated_method(zero_eight)
1472
def working_tree(self):
1473
"""Create a Working tree object for this branch."""
1475
from bzrlib.transport.local import LocalTransport
1476
if (self.base.find('://') != -1 or
1477
not isinstance(self._transport, LocalTransport)):
1478
raise NoWorkingTree(self.base)
1479
return self.bzrdir.open_workingtree()
1482
def pull(self, source, overwrite=False, stop_revision=None,
1483
_hook_master=None, run_hooks=True):
1486
:param _hook_master: Private parameter - set the branch to
1487
be supplied as the master to push hooks.
1488
:param run_hooks: Private parameter - if false, this branch
1489
is being called because it's the master of the primary branch,
1490
so it should not run its hooks.
1492
result = PullResult()
1493
result.source_branch = source
1494
result.target_branch = self
1497
result.old_revno, result.old_revid = self.last_revision_info()
1499
self.update_revisions(source, stop_revision)
1500
except DivergedBranches:
1504
if stop_revision is None:
1505
stop_revision = source.last_revision()
1506
self.generate_revision_history(stop_revision)
1507
result.tag_conflicts = source.tags.merge_to(self.tags)
1508
result.new_revno, result.new_revid = self.last_revision_info()
1510
result.master_branch = _hook_master
1511
result.local_branch = self
1513
result.master_branch = self
1514
result.local_branch = None
1516
for hook in Branch.hooks['post_pull']:
2540
1522
def _get_parent_location(self):
2541
1523
_locs = ['parent', 'pull', 'x-pull']
2542
1524
for l in _locs:
2544
return self._transport.get_bytes(l).strip('\n')
2545
except errors.NoSuchFile:
1526
return self.control_files.get(l).read().strip('\n')
1532
def push(self, target, overwrite=False, stop_revision=None,
1533
_override_hook_source_branch=None):
1536
This is the basic concrete implementation of push()
1538
:param _override_hook_source_branch: If specified, run
1539
the hooks passing this Branch as the source, rather than self.
1540
This is for use of RemoteBranch, where push is delegated to the
1541
underlying vfs-based Branch.
1543
# TODO: Public option to disable running hooks - should be trivial but
1547
result = self._push_with_bound_branches(target, overwrite,
1549
_override_hook_source_branch=_override_hook_source_branch)
1554
def _push_with_bound_branches(self, target, overwrite,
1556
_override_hook_source_branch=None):
1557
"""Push from self into target, and into target's master if any.
1559
This is on the base BzrBranch class even though it doesn't support
1560
bound branches because the *target* might be bound.
1563
if _override_hook_source_branch:
1564
result.source_branch = _override_hook_source_branch
1565
for hook in Branch.hooks['post_push']:
1568
bound_location = target.get_bound_location()
1569
if bound_location and target.base != bound_location:
1570
# there is a master branch.
1572
# XXX: Why the second check? Is it even supported for a branch to
1573
# be bound to itself? -- mbp 20070507
1574
master_branch = target.get_master_branch()
1575
master_branch.lock_write()
1577
# push into the master from this branch.
1578
self._basic_push(master_branch, overwrite, stop_revision)
1579
# and push into the target branch from this. Note that we push from
1580
# this branch again, because its considered the highest bandwidth
1582
result = self._basic_push(target, overwrite, stop_revision)
1583
result.master_branch = master_branch
1584
result.local_branch = target
1588
master_branch.unlock()
1591
result = self._basic_push(target, overwrite, stop_revision)
1592
# TODO: Why set master_branch and local_branch if there's no
1593
# binding? Maybe cleaner to just leave them unset? -- mbp
1595
result.master_branch = target
1596
result.local_branch = None
2549
1600
def _basic_push(self, target, overwrite, stop_revision):
2550
1601
"""Basic implementation of push without bound branches or hooks.
2552
Must be called with source read locked and target write locked.
1603
Must be called with self read locked and target write locked.
2554
result = BranchPushResult()
1605
result = PushResult()
2555
1606
result.source_branch = self
2556
1607
result.target_branch = target
2557
1608
result.old_revno, result.old_revid = target.last_revision_info()
2558
self.update_references(target)
2559
if result.old_revid != self.last_revision():
2560
# We assume that during 'push' this repository is closer than
2562
graph = self.repository.get_graph(target.repository)
2563
target.update_revisions(self, stop_revision,
2564
overwrite=overwrite, graph=graph)
2565
if self._push_should_merge_tags():
2566
result.tag_conflicts = self.tags.merge_to(target.tags,
1610
target.update_revisions(self, stop_revision)
1611
except DivergedBranches:
1615
target.set_revision_history(self.revision_history())
1616
result.tag_conflicts = self.tags.merge_to(target.tags)
2568
1617
result.new_revno, result.new_revid = target.last_revision_info()
2571
def get_stacked_on_url(self):
2572
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1620
def get_parent(self):
1621
"""See Branch.get_parent."""
1623
assert self.base[-1] == '/'
1624
parent = self._get_parent_location()
1627
# This is an old-format absolute path to a local branch
1628
# turn it into a url
1629
if parent.startswith('/'):
1630
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1632
return urlutils.join(self.base[:-1], parent)
1633
except errors.InvalidURLJoin, e:
1634
raise errors.InaccessibleParent(parent, self.base)
2574
1636
def set_push_location(self, location):
2575
1637
"""See Branch.set_push_location."""
2577
1639
'push_location', location,
2578
1640
store=_mod_config.STORE_LOCATION_NORECURSE)
1643
def set_parent(self, url):
1644
"""See Branch.set_parent."""
1645
# TODO: Maybe delete old location files?
1646
# URLs should never be unicode, even on the local fs,
1647
# FIXUP this and get_parent in a future branch format bump:
1648
# read and rewrite the file, and have the new format code read
1649
# using .get not .get_utf8. RBC 20060125
1651
if isinstance(url, unicode):
1653
url = url.encode('ascii')
1654
except UnicodeEncodeError:
1655
raise errors.InvalidURL(url,
1656
"Urls must be 7-bit ascii, "
1657
"use bzrlib.urlutils.escape")
1658
url = urlutils.relative_url(self.base, url)
1659
self._set_parent_location(url)
2580
1661
def _set_parent_location(self, url):
2581
1662
if url is None:
2582
self._transport.delete('parent')
1663
self.control_files._transport.delete('parent')
2584
self._transport.put_bytes('parent', url + '\n',
2585
mode=self.bzrdir._get_file_mode())
1665
assert isinstance(url, str)
1666
self.control_files.put_bytes('parent', url + '\n')
1668
@deprecated_function(zero_nine)
1669
def tree_config(self):
1670
"""DEPRECATED; call get_config instead.
1671
TreeConfig has become part of BranchConfig."""
1672
return TreeConfig(self)
2588
1675
class BzrBranch5(BzrBranch):
2589
"""A format 5 branch. This supports new features over plain branches.
1676
"""A format 5 branch. This supports new features over plan branches.
2591
1678
It has support for a master_branch which is the data for bound branches.
1686
super(BzrBranch5, self).__init__(_format=_format,
1687
_control_files=_control_files,
1689
_repository=_repository)
1692
def pull(self, source, overwrite=False, stop_revision=None,
1694
"""Pull from source into self, updating my master if any.
1696
:param run_hooks: Private parameter - if false, this branch
1697
is being called because it's the master of the primary branch,
1698
so it should not run its hooks.
1700
bound_location = self.get_bound_location()
1701
master_branch = None
1702
if bound_location and source.base != bound_location:
1703
# not pulling from master, so we need to update master.
1704
master_branch = self.get_master_branch()
1705
master_branch.lock_write()
1708
# pull from source into master.
1709
master_branch.pull(source, overwrite, stop_revision,
1711
return super(BzrBranch5, self).pull(source, overwrite,
1712
stop_revision, _hook_master=master_branch,
1713
run_hooks=run_hooks)
1716
master_branch.unlock()
2594
1718
def get_bound_location(self):
2596
return self._transport.get_bytes('bound')[:-1]
1720
return self.control_files.get_utf8('bound').read()[:-1]
2597
1721
except errors.NoSuchFile:
2600
1724
@needs_read_lock
2601
def get_master_branch(self, possible_transports=None):
1725
def get_master_branch(self):
2602
1726
"""Return the branch we are bound to.
2604
1728
:return: Either a Branch, or None
2606
1730
This could memoise the branch, but if thats done
2666
1804
return self.set_bound_location(None)
2668
1806
@needs_write_lock
2669
def update(self, possible_transports=None):
2670
"""Synchronise this branch with the master branch if any.
1808
"""Synchronise this branch with the master branch if any.
2672
1810
:return: None or the last_revision that was pivoted out during the
2675
master = self.get_master_branch(possible_transports)
1813
master = self.get_master_branch()
2676
1814
if master is not None:
2677
old_tip = _mod_revision.ensure_null(self.last_revision())
1815
old_tip = self.last_revision()
2678
1816
self.pull(master, overwrite=True)
2679
if self.repository.get_graph().is_ancestor(old_tip,
2680
_mod_revision.ensure_null(self.last_revision())):
1817
if old_tip in self.repository.get_ancestry(self.last_revision(),
2686
class BzrBranch8(BzrBranch5):
2687
"""A branch that stores tree-reference locations."""
2689
def _open_hook(self):
2690
if self._ignore_fallbacks:
1824
class BzrBranchExperimental(BzrBranch5):
1825
"""Bzr experimental branch format
1828
- a revision-history file.
1830
- a lock dir guarding the branch itself
1831
- all of this stored in a branch/ subdirectory
1832
- works with shared repositories.
1833
- a tag dictionary in the branch
1835
This format is new in bzr 0.15, but shouldn't be used for real data,
1838
This class acts as it's own BranchFormat.
1841
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1844
def get_format_string(cls):
1845
"""See BranchFormat.get_format_string()."""
1846
return "Bazaar-NG branch format experimental\n"
1849
def get_format_description(cls):
1850
"""See BranchFormat.get_format_description()."""
1851
return "Experimental branch format"
1854
def get_reference(cls, a_bzrdir):
1855
"""Get the target reference of the branch in a_bzrdir.
1857
format probing must have been completed before calling
1858
this method - it is assumed that the format of the branch
1859
in a_bzrdir is correct.
1861
:param a_bzrdir: The bzrdir to get the branch data from.
1862
:return: None if the branch is not a reference branch.
1867
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1869
branch_transport = a_bzrdir.get_branch_transport(cls)
1870
control_files = lockable_files.LockableFiles(branch_transport,
1871
lock_filename, lock_class)
1872
control_files.create_lock()
1873
control_files.lock_write()
2693
url = self.get_stacked_on_url()
2694
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2695
errors.UnstackableBranchFormat):
2698
for hook in Branch.hooks['transform_fallback_location']:
2699
url = hook(self, url)
2701
hook_name = Branch.hooks.get_hook_name(hook)
2702
raise AssertionError(
2703
"'transform_fallback_location' hook %s returned "
2704
"None, not a URL." % hook_name)
2705
self._activate_fallback_location(url)
2707
def __init__(self, *args, **kwargs):
2708
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2709
super(BzrBranch8, self).__init__(*args, **kwargs)
2710
self._last_revision_info_cache = None
2711
self._reference_info = None
2713
def _clear_cached_state(self):
2714
super(BzrBranch8, self)._clear_cached_state()
2715
self._last_revision_info_cache = None
2716
self._reference_info = None
2718
def _last_revision_info(self):
2719
revision_string = self._transport.get_bytes('last-revision')
1875
for filename, content in utf8_files:
1876
control_files.put_utf8(filename, content)
1878
control_files.unlock()
1881
def initialize(cls, a_bzrdir):
1882
"""Create a branch of this format in a_bzrdir."""
1883
utf8_files = [('format', cls.get_format_string()),
1884
('revision-history', ''),
1885
('branch-name', ''),
1888
cls._initialize_control_files(a_bzrdir, utf8_files,
1889
'lock', lockdir.LockDir)
1890
return cls.open(a_bzrdir, _found=True)
1893
def open(cls, a_bzrdir, _found=False):
1894
"""Return the branch object for a_bzrdir
1896
_found is a private parameter, do not use it. It is used to indicate
1897
if format probing has already be done.
1900
format = BranchFormat.find_format(a_bzrdir)
1901
assert format.__class__ == cls
1902
transport = a_bzrdir.get_branch_transport(None)
1903
control_files = lockable_files.LockableFiles(transport, 'lock',
1905
return cls(_format=cls,
1906
_control_files=control_files,
1908
_repository=a_bzrdir.find_repository())
1911
def is_supported(cls):
1914
def _make_tags(self):
1915
return BasicTags(self)
1918
def supports_tags(cls):
1922
BranchFormat.register_format(BzrBranchExperimental)
1925
class BzrBranch6(BzrBranch5):
1928
def last_revision_info(self):
1929
revision_string = self.control_files.get('last-revision').read()
2720
1930
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2721
1931
revision_id = cache_utf8.get_cached_utf8(revision_id)
2722
1932
revno = int(revno)
2723
1933
return revno, revision_id
1935
def last_revision(self):
1936
"""Return last revision id, or None"""
1937
revision_id = self.last_revision_info()[1]
1938
if revision_id == _mod_revision.NULL_REVISION:
2725
1942
def _write_last_revision_info(self, revno, revision_id):
2726
1943
"""Simply write out the revision id, with no checks.
2731
1948
Intended to be called by set_last_revision_info and
2732
1949
_write_revision_history.
2734
revision_id = _mod_revision.ensure_null(revision_id)
1951
if revision_id is None:
1952
revision_id = 'null:'
2735
1953
out_string = '%d %s\n' % (revno, revision_id)
2736
self._transport.put_bytes('last-revision', out_string,
2737
mode=self.bzrdir._get_file_mode())
1954
self.control_files.put_bytes('last-revision', out_string)
2739
1956
@needs_write_lock
2740
1957
def set_last_revision_info(self, revno, revision_id):
2741
revision_id = _mod_revision.ensure_null(revision_id)
2742
old_revno, old_revid = self.last_revision_info()
1958
revision_id = osutils.safe_revision_id(revision_id)
2743
1959
if self._get_append_revisions_only():
2744
1960
self._check_history_violation(revision_id)
2745
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2746
1961
self._write_last_revision_info(revno, revision_id)
2747
1962
self._clear_cached_state()
2748
self._last_revision_info_cache = revno, revision_id
2749
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2751
def _synchronize_history(self, destination, revision_id):
2752
"""Synchronize last revision and revision history between branches.
2754
:see: Branch._synchronize_history
2756
# XXX: The base Branch has a fast implementation of this method based
2757
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2758
# that uses set_revision_history. This class inherits from BzrBranch5,
2759
# but wants the fast implementation, so it calls
2760
# Branch._synchronize_history directly.
2761
Branch._synchronize_history(self, destination, revision_id)
2763
1964
def _check_history_violation(self, revision_id):
2764
last_revision = _mod_revision.ensure_null(self.last_revision())
2765
if _mod_revision.is_null(last_revision):
1965
last_revision = self.last_revision()
1966
if last_revision is None:
2767
1968
if last_revision not in self._lefthand_history(revision_id):
2768
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1969
raise errors.AppendRevisionsOnlyViolation(self.base)
2770
1971
def _gen_revision_history(self):
2771
1972
"""Generate the revision history from last revision
2773
last_revno, last_revision = self.last_revision_info()
2774
self._extend_partial_history(stop_index=last_revno-1)
2775
return list(reversed(self._partial_revision_history_cache))
1974
history = list(self.repository.iter_reverse_revision_history(
1975
self.last_revision()))
2777
1979
def _write_revision_history(self, history):
2778
1980
"""Factored out of set_revision_history.
2800
2021
"""Set the parent branch"""
2801
2022
return self._get_config_location('parent_location')
2804
def _set_all_reference_info(self, info_dict):
2805
"""Replace all reference info stored in a branch.
2807
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2810
writer = rio.RioWriter(s)
2811
for key, (tree_path, branch_location) in info_dict.iteritems():
2812
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2813
branch_location=branch_location)
2814
writer.write_stanza(stanza)
2815
self._transport.put_bytes('references', s.getvalue())
2816
self._reference_info = info_dict
2819
def _get_all_reference_info(self):
2820
"""Return all the reference info stored in a branch.
2822
:return: A dict of {file_id: (tree_path, branch_location)}
2824
if self._reference_info is not None:
2825
return self._reference_info
2826
rio_file = self._transport.get('references')
2828
stanzas = rio.read_stanzas(rio_file)
2829
info_dict = dict((s['file_id'], (s['tree_path'],
2830
s['branch_location'])) for s in stanzas)
2833
self._reference_info = info_dict
2836
def set_reference_info(self, file_id, tree_path, branch_location):
2837
"""Set the branch location to use for a tree reference.
2839
:param file_id: The file-id of the tree reference.
2840
:param tree_path: The path of the tree reference in the tree.
2841
:param branch_location: The location of the branch to retrieve tree
2844
info_dict = self._get_all_reference_info()
2845
info_dict[file_id] = (tree_path, branch_location)
2846
if None in (tree_path, branch_location):
2847
if tree_path is not None:
2848
raise ValueError('tree_path must be None when branch_location'
2850
if branch_location is not None:
2851
raise ValueError('branch_location must be None when tree_path'
2853
del info_dict[file_id]
2854
self._set_all_reference_info(info_dict)
2856
def get_reference_info(self, file_id):
2857
"""Get the tree_path and branch_location for a tree reference.
2859
:return: a tuple of (tree_path, branch_location)
2861
return self._get_all_reference_info().get(file_id, (None, None))
2863
def reference_parent(self, file_id, path, possible_transports=None):
2864
"""Return the parent branch for a tree-reference file_id.
2866
:param file_id: The file_id of the tree reference
2867
:param path: The path of the file_id in the tree
2868
:return: A branch associated with the file_id
2870
branch_location = self.get_reference_info(file_id)[1]
2871
if branch_location is None:
2872
return Branch.reference_parent(self, file_id, path,
2873
possible_transports)
2874
branch_location = urlutils.join(self.user_url, branch_location)
2875
return Branch.open(branch_location,
2876
possible_transports=possible_transports)
2878
2024
def set_push_location(self, location):
2879
2025
"""See Branch.set_push_location."""
2880
2026
self._set_config_location('push_location', location)
2913
2059
"""See Branch.get_old_bound_location"""
2914
2060
return self._get_bound_location(False)
2916
def get_stacked_on_url(self):
2917
# you can always ask for the URL; but you might not be able to use it
2918
# if the repo can't support stacking.
2919
## self._check_stackable_repo()
2920
stacked_url = self._get_config_location('stacked_on_location')
2921
if stacked_url is None:
2922
raise errors.NotStacked(self)
2062
def set_append_revisions_only(self, enabled):
2067
self.get_config().set_user_option('append_revisions_only', value)
2925
2069
def _get_append_revisions_only(self):
2926
return self.get_config(
2927
).get_user_option_as_bool('append_revisions_only')
2930
def generate_revision_history(self, revision_id, last_rev=None,
2932
"""See BzrBranch5.generate_revision_history"""
2933
history = self._lefthand_history(revision_id, last_rev, other_branch)
2934
revno = len(history)
2935
self.set_last_revision_info(revno, revision_id)
2938
def get_rev_id(self, revno, history=None):
2939
"""Find the revision id of the specified revno."""
2941
return _mod_revision.NULL_REVISION
2943
last_revno, last_revision_id = self.last_revision_info()
2944
if revno <= 0 or revno > last_revno:
2945
raise errors.NoSuchRevision(self, revno)
2947
if history is not None:
2948
return history[revno - 1]
2950
index = last_revno - revno
2951
if len(self._partial_revision_history_cache) <= index:
2952
self._extend_partial_history(stop_index=index)
2953
if len(self._partial_revision_history_cache) > index:
2954
return self._partial_revision_history_cache[index]
2070
value = self.get_config().get_user_option('append_revisions_only')
2071
return value == 'True'
2073
def _synchronize_history(self, destination, revision_id):
2074
"""Synchronize last revision and revision history between branches.
2076
This version is most efficient when the destination is also a
2077
BzrBranch6, but works for BzrBranch5, as long as the destination's
2078
repository contains all the lefthand ancestors of the intended
2079
last_revision. If not, set_last_revision_info will fail.
2081
:param destination: The branch to copy the history into
2082
:param revision_id: The revision-id to truncate history at. May
2083
be None to copy complete history.
2085
if revision_id is None:
2086
revno, revision_id = self.last_revision_info()
2956
raise errors.NoSuchRevision(self, revno)
2959
def revision_id_to_revno(self, revision_id):
2960
"""Given a revision id, return its revno"""
2961
if _mod_revision.is_null(revision_id):
2964
index = self._partial_revision_history_cache.index(revision_id)
2966
self._extend_partial_history(stop_revision=revision_id)
2967
index = len(self._partial_revision_history_cache) - 1
2968
if self._partial_revision_history_cache[index] != revision_id:
2969
raise errors.NoSuchRevision(self, revision_id)
2970
return self.revno() - index
2973
class BzrBranch7(BzrBranch8):
2974
"""A branch with support for a fallback repository."""
2976
def set_reference_info(self, file_id, tree_path, branch_location):
2977
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2979
def get_reference_info(self, file_id):
2980
Branch.get_reference_info(self, file_id)
2982
def reference_parent(self, file_id, path, possible_transports=None):
2983
return Branch.reference_parent(self, file_id, path,
2984
possible_transports)
2987
class BzrBranch6(BzrBranch7):
2988
"""See BzrBranchFormat6 for the capabilities of this branch.
2990
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2088
# To figure out the revno for a random revision, we need to build
2089
# the revision history, and count its length.
2090
# We don't care about the order, just how long it is.
2091
# Alternatively, we could start at the current location, and count
2092
# backwards. But there is no guarantee that we will find it since
2093
# it may be a merged revision.
2094
revno = len(list(self.repository.iter_reverse_revision_history(
2096
destination.set_last_revision_info(revno, revision_id)
2098
def _make_tags(self):
2099
return BasicTags(self)
2102
class BranchTestProviderAdapter(object):
2103
"""A tool to generate a suite testing multiple branch formats at once.
2105
This is done by copying the test once for each transport and injecting
2106
the transport_server, transport_readonly_server, and branch_format
2107
classes into each copy. Each copy is also given a new id() to make it
2994
def get_stacked_on_url(self):
2995
raise errors.UnstackableBranchFormat(self._format, self.user_url)
2111
def __init__(self, transport_server, transport_readonly_server, formats,
2112
vfs_transport_factory=None):
2113
self._transport_server = transport_server
2114
self._transport_readonly_server = transport_readonly_server
2115
self._formats = formats
2117
def adapt(self, test):
2118
result = TestSuite()
2119
for branch_format, bzrdir_format in self._formats:
2120
new_test = deepcopy(test)
2121
new_test.transport_server = self._transport_server
2122
new_test.transport_readonly_server = self._transport_readonly_server
2123
new_test.bzrdir_format = bzrdir_format
2124
new_test.branch_format = branch_format
2125
def make_new_test_id():
2126
# the format can be either a class or an instance
2127
name = getattr(branch_format, '__name__',
2128
branch_format.__class__.__name__)
2129
new_id = "%s(%s)" % (new_test.id(), name)
2130
return lambda: new_id
2131
new_test.id = make_new_test_id()
2132
result.addTest(new_test)
2998
2136
######################################################################
3109
2234
new_branch.tags._set_tag_dict({})
3111
2236
# Copying done; now update target format
3112
new_branch._transport.put_bytes('format',
3113
format.get_format_string(),
3114
mode=new_branch.bzrdir._get_file_mode())
2237
new_branch.control_files.put_utf8('format',
2238
format.get_format_string())
3116
2240
# Clean up old files
3117
new_branch._transport.delete('revision-history')
2241
new_branch.control_files._transport.delete('revision-history')
3119
2243
branch.set_parent(None)
3120
except errors.NoSuchFile:
3122
2246
branch.set_bound_location(None)
3125
class Converter6to7(object):
3126
"""Perform an in-place upgrade of format 6 to format 7"""
3128
def convert(self, branch):
3129
format = BzrBranchFormat7()
3130
branch._set_config_location('stacked_on_location', '')
3131
# update target format
3132
branch._transport.put_bytes('format', format.get_format_string())
3135
class Converter7to8(object):
3136
"""Perform an in-place upgrade of format 6 to format 7"""
3138
def convert(self, branch):
3139
format = BzrBranchFormat8()
3140
branch._transport.put_bytes('references', '')
3141
# update target format
3142
branch._transport.put_bytes('format', format.get_format_string())
3145
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3146
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3149
_run_with_write_locked_target will attempt to release the lock it acquires.
3151
If an exception is raised by callable, then that exception *will* be
3152
propagated, even if the unlock attempt raises its own error. Thus
3153
_run_with_write_locked_target should be preferred to simply doing::
3157
return callable(*args, **kwargs)
3162
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3163
# should share code?
3166
result = callable(*args, **kwargs)
3168
exc_info = sys.exc_info()
3172
raise exc_info[0], exc_info[1], exc_info[2]
3178
class InterBranch(InterObject):
3179
"""This class represents operations taking place between two branches.
3181
Its instances have methods like pull() and push() and contain
3182
references to the source and target repositories these operations
3183
can be carried out on.
3187
"""The available optimised InterBranch types."""
3190
def _get_branch_formats_to_test():
3191
"""Return a tuple with the Branch formats to use when testing."""
3192
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3194
def pull(self, overwrite=False, stop_revision=None,
3195
possible_transports=None, local=False):
3196
"""Mirror source into target branch.
3198
The target branch is considered to be 'local', having low latency.
3200
:returns: PullResult instance
3202
raise NotImplementedError(self.pull)
3204
def update_revisions(self, stop_revision=None, overwrite=False,
3206
"""Pull in new perfect-fit revisions.
3208
:param stop_revision: Updated until the given revision
3209
:param overwrite: Always set the branch pointer, rather than checking
3210
to see if it is a proper descendant.
3211
:param graph: A Graph object that can be used to query history
3212
information. This can be None.
3215
raise NotImplementedError(self.update_revisions)
3217
def push(self, overwrite=False, stop_revision=None,
3218
_override_hook_source_branch=None):
3219
"""Mirror the source branch into the target branch.
3221
The source branch is considered to be 'local', having low latency.
3223
raise NotImplementedError(self.push)
3226
class GenericInterBranch(InterBranch):
3227
"""InterBranch implementation that uses public Branch functions.
3231
def _get_branch_formats_to_test():
3232
return BranchFormat._default_format, BranchFormat._default_format
3234
def update_revisions(self, stop_revision=None, overwrite=False,
3236
"""See InterBranch.update_revisions()."""
3237
self.source.lock_read()
3239
other_revno, other_last_revision = self.source.last_revision_info()
3240
stop_revno = None # unknown
3241
if stop_revision is None:
3242
stop_revision = other_last_revision
3243
if _mod_revision.is_null(stop_revision):
3244
# if there are no commits, we're done.
3246
stop_revno = other_revno
3248
# what's the current last revision, before we fetch [and change it
3250
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3251
# we fetch here so that we don't process data twice in the common
3252
# case of having something to pull, and so that the check for
3253
# already merged can operate on the just fetched graph, which will
3254
# be cached in memory.
3255
self.target.fetch(self.source, stop_revision)
3256
# Check to see if one is an ancestor of the other
3259
graph = self.target.repository.get_graph()
3260
if self.target._check_if_descendant_or_diverged(
3261
stop_revision, last_rev, graph, self.source):
3262
# stop_revision is a descendant of last_rev, but we aren't
3263
# overwriting, so we're done.
3265
if stop_revno is None:
3267
graph = self.target.repository.get_graph()
3268
this_revno, this_last_revision = \
3269
self.target.last_revision_info()
3270
stop_revno = graph.find_distance_to_null(stop_revision,
3271
[(other_last_revision, other_revno),
3272
(this_last_revision, this_revno)])
3273
self.target.set_last_revision_info(stop_revno, stop_revision)
3275
self.source.unlock()
3277
def pull(self, overwrite=False, stop_revision=None,
3278
possible_transports=None, _hook_master=None, run_hooks=True,
3279
_override_hook_target=None, local=False):
3282
:param _hook_master: Private parameter - set the branch to
3283
be supplied as the master to pull hooks.
3284
:param run_hooks: Private parameter - if false, this branch
3285
is being called because it's the master of the primary branch,
3286
so it should not run its hooks.
3287
:param _override_hook_target: Private parameter - set the branch to be
3288
supplied as the target_branch to pull hooks.
3289
:param local: Only update the local branch, and not the bound branch.
3291
# This type of branch can't be bound.
3293
raise errors.LocalRequiresBoundBranch()
3294
result = PullResult()
3295
result.source_branch = self.source
3296
if _override_hook_target is None:
3297
result.target_branch = self.target
3299
result.target_branch = _override_hook_target
3300
self.source.lock_read()
3302
# We assume that during 'pull' the target repository is closer than
3304
self.source.update_references(self.target)
3305
graph = self.target.repository.get_graph(self.source.repository)
3306
# TODO: Branch formats should have a flag that indicates
3307
# that revno's are expensive, and pull() should honor that flag.
3309
result.old_revno, result.old_revid = \
3310
self.target.last_revision_info()
3311
self.target.update_revisions(self.source, stop_revision,
3312
overwrite=overwrite, graph=graph)
3313
# TODO: The old revid should be specified when merging tags,
3314
# so a tags implementation that versions tags can only
3315
# pull in the most recent changes. -- JRV20090506
3316
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3318
result.new_revno, result.new_revid = self.target.last_revision_info()
3320
result.master_branch = _hook_master
3321
result.local_branch = result.target_branch
3323
result.master_branch = result.target_branch
3324
result.local_branch = None
3326
for hook in Branch.hooks['post_pull']:
3329
self.source.unlock()
3332
def push(self, overwrite=False, stop_revision=None,
3333
_override_hook_source_branch=None):
3334
"""See InterBranch.push.
3336
This is the basic concrete implementation of push()
3338
:param _override_hook_source_branch: If specified, run
3339
the hooks passing this Branch as the source, rather than self.
3340
This is for use of RemoteBranch, where push is delegated to the
3341
underlying vfs-based Branch.
3343
# TODO: Public option to disable running hooks - should be trivial but
3345
self.source.lock_read()
3347
return _run_with_write_locked_target(
3348
self.target, self._push_with_bound_branches, overwrite,
3350
_override_hook_source_branch=_override_hook_source_branch)
3352
self.source.unlock()
3354
def _push_with_bound_branches(self, overwrite, stop_revision,
3355
_override_hook_source_branch=None):
3356
"""Push from source into target, and into target's master if any.
3359
if _override_hook_source_branch:
3360
result.source_branch = _override_hook_source_branch
3361
for hook in Branch.hooks['post_push']:
3364
bound_location = self.target.get_bound_location()
3365
if bound_location and self.target.base != bound_location:
3366
# there is a master branch.
3368
# XXX: Why the second check? Is it even supported for a branch to
3369
# be bound to itself? -- mbp 20070507
3370
master_branch = self.target.get_master_branch()
3371
master_branch.lock_write()
3373
# push into the master from the source branch.
3374
self.source._basic_push(master_branch, overwrite, stop_revision)
3375
# and push into the target branch from the source. Note that we
3376
# push from the source branch again, because its considered the
3377
# highest bandwidth repository.
3378
result = self.source._basic_push(self.target, overwrite,
3380
result.master_branch = master_branch
3381
result.local_branch = self.target
3385
master_branch.unlock()
3388
result = self.source._basic_push(self.target, overwrite,
3390
# TODO: Why set master_branch and local_branch if there's no
3391
# binding? Maybe cleaner to just leave them unset? -- mbp
3393
result.master_branch = self.target
3394
result.local_branch = None
3399
def is_compatible(self, source, target):
3400
# GenericBranch uses the public API, so always compatible
3404
class InterToBranch5(GenericInterBranch):
3407
def _get_branch_formats_to_test():
3408
return BranchFormat._default_format, BzrBranchFormat5()
3410
def pull(self, overwrite=False, stop_revision=None,
3411
possible_transports=None, run_hooks=True,
3412
_override_hook_target=None, local=False):
3413
"""Pull from source into self, updating my master if any.
3415
:param run_hooks: Private parameter - if false, this branch
3416
is being called because it's the master of the primary branch,
3417
so it should not run its hooks.
3419
bound_location = self.target.get_bound_location()
3420
if local and not bound_location:
3421
raise errors.LocalRequiresBoundBranch()
3422
master_branch = None
3423
if not local and bound_location and self.source.user_url != bound_location:
3424
# not pulling from master, so we need to update master.
3425
master_branch = self.target.get_master_branch(possible_transports)
3426
master_branch.lock_write()
3429
# pull from source into master.
3430
master_branch.pull(self.source, overwrite, stop_revision,
3432
return super(InterToBranch5, self).pull(overwrite,
3433
stop_revision, _hook_master=master_branch,
3434
run_hooks=run_hooks,
3435
_override_hook_target=_override_hook_target)
3438
master_branch.unlock()
3441
InterBranch.register_optimiser(GenericInterBranch)
3442
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
