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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.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine,
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from bzrlib.trace import mutter, note
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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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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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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* 'with-merges-without-common-ancestry' - filter out revisions
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that are in both ancestries
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
445
* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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# Make sure we don't return revisions that are not part of the
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)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
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"""Iterate over an inclusive range of sorted revisions."""
480
rev_iter = iter(merge_sorted_revisions)
481
if start_revision_id is not None:
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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
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# 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]
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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:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'include':
506
for node in rev_iter:
507
rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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if rev_id == stop_revision_id:
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elif stop_rule == 'with-merges-without-common-ancestry':
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# We want to exclude all revisions that are already part of the
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# stop_revision_id ancestry.
515
graph = self.repository.get_graph()
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ancestors = graph.find_unique_ancestors(start_revision_id,
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for node in rev_iter:
519
rev_id = node.key[-1]
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if rev_id not in ancestors:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'with-merges':
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
def leave_lock_in_place(self):
598
"""Tell this branch object not to release the physical lock when this
601
If lock_write doesn't return a token, then this method is not supported.
603
self.control_files.leave_in_place()
605
def dont_leave_lock_in_place(self):
606
"""Tell this branch object to release the physical lock when this
607
object is unlocked, even if it didn't originally acquire it.
609
If lock_write doesn't return a token, then this method is not supported.
611
self.control_files.dont_leave_in_place()
196
def abspath(self, name):
197
"""Return absolute filename for something in the branch
199
XXX: Robert Collins 20051017 what is this used for? why is it a branch
200
method and not a tree method.
202
raise NotImplementedError(self.abspath)
613
204
def bind(self, other):
614
205
"""Bind the local branch the other branch.
709
290
The delta is relative to its mainline predecessor, or the
710
291
empty tree for revision 1.
293
assert isinstance(revno, int)
712
294
rh = self.revision_history()
713
295
if not (1 <= revno <= len(rh)):
714
raise errors.InvalidRevisionNumber(revno)
296
raise InvalidRevisionNumber(revno)
715
297
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.
720
:raises NotStacked: If the branch is not stacked.
721
:raises UnstackableBranchFormat: If the branch does not support
724
raise NotImplementedError(self.get_stacked_on_url)
299
def get_root_id(self):
300
"""Return the id of this branches root"""
301
raise NotImplementedError(self.get_root_id)
726
303
def print_file(self, file, revision_id):
727
304
"""Print `file` to stdout."""
728
305
raise NotImplementedError(self.print_file)
307
def append_revision(self, *revision_ids):
308
raise NotImplementedError(self.append_revision)
730
310
def set_revision_history(self, rev_history):
731
311
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
def _cache_revision_history(self, rev_history):
843
"""Set the cached revision history to rev_history.
845
The revision_history method will use this cache to avoid regenerating
846
the revision history.
848
This API is semi-public; it only for use by subclasses, all other code
849
should consider it to be private.
851
self._revision_history_cache = rev_history
853
def _cache_revision_id_to_revno(self, revision_id_to_revno):
854
"""Set the cached revision_id => revno map to revision_id_to_revno.
856
This API is semi-public; it only for use by subclasses, all other code
857
should consider it to be private.
859
self._revision_id_to_revno_cache = revision_id_to_revno
861
def _clear_cached_state(self):
862
"""Clear any cached data on this branch, e.g. cached revision history.
864
This means the next call to revision_history will need to call
865
_gen_revision_history.
867
This API is semi-public; it only for use by subclasses, all other code
868
should consider it to be private.
870
self._revision_history_cache = None
871
self._revision_id_to_revno_cache = None
872
self._last_revision_info_cache = None
873
self._merge_sorted_revisions_cache = None
874
self._partial_revision_history_cache = []
875
self._partial_revision_id_to_revno_cache = {}
877
def _gen_revision_history(self):
878
"""Return sequence of revision hashes on to this branch.
880
Unlike revision_history, this method always regenerates or rereads the
881
revision history, i.e. it does not cache the result, so repeated calls
884
Concrete subclasses should override this instead of revision_history so
885
that subclasses do not need to deal with caching logic.
887
This API is semi-public; it only for use by subclasses, all other code
888
should consider it to be private.
890
raise NotImplementedError(self._gen_revision_history)
893
313
def revision_history(self):
894
"""Return sequence of revision ids on this branch.
896
This method will cache the revision history for as long as it is safe to
899
if 'evil' in debug.debug_flags:
900
mutter_callsite(3, "revision_history scales with history.")
901
if self._revision_history_cache is not None:
902
history = self._revision_history_cache
904
history = self._gen_revision_history()
905
self._cache_revision_history(history)
314
"""Return sequence of revision hashes on to this branch."""
315
raise NotImplementedError(self.revision_history)
909
318
"""Return current revision number for this branch.
953
363
common_index = min(self_len, other_len) -1
954
364
if common_index >= 0 and \
955
365
self_history[common_index] != other_history[common_index]:
956
raise errors.DivergedBranches(self, other)
366
raise DivergedBranches(self, other)
958
368
if stop_revision is None:
959
369
stop_revision = other_len
371
assert isinstance(stop_revision, int)
961
372
if stop_revision > other_len:
962
373
raise errors.NoSuchRevision(self, stop_revision)
963
374
return other_history[self_len:stop_revision]
966
def update_revisions(self, other, stop_revision=None, overwrite=False,
376
def update_revisions(self, other, stop_revision=None):
968
377
"""Pull in new perfect-fit revisions.
970
379
:param other: Another Branch to pull from
971
380
: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)
383
raise NotImplementedError(self.update_revisions)
995
385
def revision_id_to_revno(self, revision_id):
996
386
"""Given a revision id, return its revno"""
997
if _mod_revision.is_null(revision_id):
387
if revision_id is None:
389
revision_id = osutils.safe_revision_id(revision_id)
999
390
history = self.revision_history()
1001
392
return history.index(revision_id) + 1
1002
393
except ValueError:
1003
raise errors.NoSuchRevision(self, revision_id)
394
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1006
396
def get_rev_id(self, revno, history=None):
1007
397
"""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:
1014
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]
401
history = self.revision_history()
402
if revno <= 0 or revno > len(history):
403
raise bzrlib.errors.NoSuchRevision(self, revno)
404
return history[revno - 1]
1021
def pull(self, source, overwrite=False, stop_revision=None,
1022
possible_transports=None, *args, **kwargs):
406
def pull(self, source, overwrite=False, stop_revision=None):
1023
407
"""Mirror source into this branch.
1025
409
This branch is considered to be 'local', having low latency.
1027
411
:returns: PullResult instance
1029
return InterBranch.get(source, self).pull(overwrite=overwrite,
1030
stop_revision=stop_revision,
1031
possible_transports=possible_transports, *args, **kwargs)
413
raise NotImplementedError(self.pull)
1033
def push(self, target, overwrite=False, stop_revision=None, *args,
415
def push(self, target, overwrite=False, stop_revision=None):
1035
416
"""Mirror this branch into target.
1037
418
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)
420
raise NotImplementedError(self.push)
1063
422
def basis_tree(self):
1064
423
"""Return `Tree` object for last revision."""
1065
424
return self.repository.revision_tree(self.last_revision())
426
def rename_one(self, from_rel, to_rel):
429
This can change the directory or the filename or both.
431
raise NotImplementedError(self.rename_one)
433
def move(self, from_paths, to_name):
436
to_name must exist as a versioned directory.
438
If to_name exists and is a directory, the files are moved into
439
it, keeping their old names. If it is a directory,
441
Note that to_name is only the last component of the new name;
442
this doesn't change the directory.
444
This returns a list of (from_path, to_path) pairs for each
447
raise NotImplementedError(self.move)
1067
449
def get_parent(self):
1068
450
"""Return the parent location of the branch.
1070
This is the default location for pull/missing. The usual
452
This is the default location for push/pull/missing. The usual
1071
453
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)
456
raise NotImplementedError(self.get_parent)
1089
458
def _set_config_location(self, name, url, config=None,
1090
459
make_relative=False):
1191
535
self.check_real_revno(revno)
1193
537
def check_real_revno(self, revno):
1195
539
Check whether a revno corresponds to a real revision.
1196
540
Zero (the NULL revision) is considered invalid
1198
542
if revno < 1 or revno > self.revno():
1199
raise errors.InvalidRevisionNumber(revno)
543
raise InvalidRevisionNumber(revno)
1201
545
@needs_read_lock
1202
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
546
def clone(self, *args, **kwargs):
1203
547
"""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
549
revision_id: if not None, the revision history in the new branch will
1209
550
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)
552
# for API compatibility, until 0.8 releases we provide the old api:
553
# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
554
# after 0.8 releases, the *args and **kwargs should be changed:
555
# def clone(self, to_bzrdir, revision_id=None):
556
if (kwargs.get('to_location', None) or
557
kwargs.get('revision', None) or
558
kwargs.get('basis_branch', None) or
559
(len(args) and isinstance(args[0], basestring))):
560
# backwards compatibility api:
561
warn("Branch.clone() has been deprecated for BzrDir.clone() from"
562
" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
565
basis_branch = args[2]
567
basis_branch = kwargs.get('basis_branch', None)
569
basis = basis_branch.bzrdir
574
revision_id = args[1]
576
revision_id = kwargs.get('revision', None)
581
# no default to raise if not provided.
582
url = kwargs.get('to_location')
583
return self.bzrdir.clone(url,
584
revision_id=revision_id,
585
basis=basis).open_branch()
587
# generate args by hand
589
revision_id = args[1]
591
revision_id = kwargs.get('revision_id', None)
595
# no default to raise if not provided.
596
to_bzrdir = kwargs.get('to_bzrdir')
597
result = self._format.initialize(to_bzrdir)
598
self.copy_content_into(result, revision_id=revision_id)
1221
601
@needs_read_lock
1222
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
602
def sprout(self, to_bzrdir, revision_id=None):
1223
603
"""Create a new line of development from the branch, into to_bzrdir.
1225
to_bzrdir controls the branch format.
1227
605
revision_id: if not None, the revision history in the new branch will
1228
606
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)
608
result = self._format.initialize(to_bzrdir)
609
self.copy_content_into(result, revision_id=revision_id)
610
result.set_parent(self.bzrdir.root_transport.base)
1244
613
def _synchronize_history(self, destination, revision_id):
1245
614
"""Synchronize last revision and revision history between branches.
1247
616
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.
617
BzrBranch5, but works for BzrBranch6 as long as the revision
618
history is the true lefthand parent history, and all of the revisions
619
are in the destination's repository. If not, set_revision_history
1252
622
:param destination: The branch to copy the history into
1253
623
:param revision_id: The revision-id to truncate history at. May
1254
624
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()
626
new_history = self.revision_history()
627
if revision_id is not None:
628
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)
630
new_history = new_history[:new_history.index(revision_id) + 1]
632
rev = self.repository.get_revision(revision_id)
633
new_history = rev.get_history(self.repository)[1:]
634
destination.set_revision_history(new_history)
1269
636
@needs_read_lock
1270
637
def copy_content_into(self, destination, revision_id=None):
1284
650
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)
651
self.tags.merge_to(destination.tags)
1305
653
@needs_read_lock
1306
def check(self, refs):
1307
655
"""Check consistency of the branch.
1309
657
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
658
do actually match up in the revision graph, and that they're all
1311
659
present in the repository.
1313
661
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
663
: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
665
mainline_parent_id = None
666
for revision_id in self.revision_history():
668
revision = self.repository.get_revision(revision_id)
669
except errors.NoSuchRevision, e:
670
raise errors.BzrCheckError("mainline revision {%s} not in repository"
672
# In general the first entry on the revision history has no parents.
673
# But it's not illegal for it to have parents listed; this can happen
674
# in imports from Arch when the parents weren't reachable.
675
if mainline_parent_id is not None:
676
if mainline_parent_id not in revision.parent_ids:
677
raise errors.BzrCheckError("previous revision {%s} not listed among "
679
% (mainline_parent_id, revision_id))
680
mainline_parent_id = revision_id
681
return BranchCheckResult(self)
1333
683
def _get_checkout_format(self):
1334
684
"""Return the most suitable metadir for a checkout of this branch.
1335
Weaves are used if this branch's repository uses weaves.
685
Weaves are used if this branch's repostory uses weaves.
1337
687
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1338
688
from bzrlib.repofmt import weaverepo
1343
693
format.set_branch_format(self._format)
1346
def create_clone_on_transport(self, to_transport, revision_id=None,
1347
stacked_on=None, create_prefix=False, use_existing_dir=False):
1348
"""Create a clone of this branch and its bzrdir.
1350
:param to_transport: The transport to clone onto.
1351
:param revision_id: The revision id to use as tip in the new branch.
1352
If None the tip is obtained from this branch.
1353
:param stacked_on: An optional URL to stack the clone on.
1354
:param create_prefix: Create any missing directories leading up to
1356
:param use_existing_dir: Use an existing directory if one exists.
1358
# XXX: Fix the bzrdir API to allow getting the branch back from the
1359
# clone call. Or something. 20090224 RBC/spiv.
1360
if revision_id is None:
1361
revision_id = self.last_revision()
1362
dir_to = self.bzrdir.clone_on_transport(to_transport,
1363
revision_id=revision_id, stacked_on=stacked_on,
1364
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1365
return dir_to.open_branch()
1367
696
def create_checkout(self, to_location, revision_id=None,
1368
lightweight=False, accelerator_tree=None,
1370
698
"""Create a checkout of a branch.
1372
700
:param to_location: The url to produce the checkout at
1373
701
:param revision_id: The revision to check out
1374
702
:param lightweight: If True, produce a lightweight checkout, otherwise,
1375
703
produce a bound branch (heavyweight checkout)
1376
:param accelerator_tree: A tree which can be used for retrieving file
1377
contents more quickly than the revision tree, i.e. a workingtree.
1378
The revision tree will be used for cases where accelerator_tree's
1379
content is different.
1380
:param hardlink: If true, hard-link files from accelerator_tree,
1382
704
:return: The tree of the created checkout
1384
706
t = transport.get_transport(to_location)
709
except errors.FileExists:
1387
712
format = self._get_checkout_format()
1388
713
checkout = format.initialize_on_transport(t)
1389
from_branch = BranchReferenceFormat().initialize(checkout,
714
BranchReferenceFormat().initialize(checkout, self)
1392
716
format = self._get_checkout_format()
1393
717
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1394
718
to_location, force_new_tree=False, format=format)
1395
719
checkout = checkout_branch.bzrdir
1396
720
checkout_branch.bind(self)
1397
# pull up to the specified revision_id to set the initial
721
# pull up to the specified revision_id to set the initial
1398
722
# branch tip correctly, and seed it with history.
1399
723
checkout_branch.pull(self, stop_revision=revision_id)
1401
tree = checkout.create_workingtree(revision_id,
1402
from_branch=from_branch,
1403
accelerator_tree=accelerator_tree,
724
tree = checkout.create_workingtree(revision_id)
1405
725
basis_tree = tree.basis_tree()
1406
726
basis_tree.lock_read()
1414
734
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):
737
def reference_parent(self, file_id, path):
1426
738
"""Return the parent branch for a tree-reference file_id
1427
739
:param file_id: The file_id of the tree reference
1428
740
:param path: The path of the file_id in the tree
1429
741
:return: A branch associated with the file_id
1431
743
# FIXME should provide multiple branches, based on config
1432
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1433
possible_transports=possible_transports)
744
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1435
746
def supports_tags(self):
1436
747
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
750
class BranchFormat(object):
1487
751
"""An encapsulation of the initialization and open routines for a format.
1596
818
control_files = lockable_files.LockableFiles(branch_transport,
1597
819
lock_name, lock_class)
1598
820
control_files.create_lock()
1600
control_files.lock_write()
1601
except errors.LockContention:
1602
if lock_type != 'branch4':
821
control_files.lock_write()
1608
utf8_files += [('format', self.get_format_string())]
823
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())
825
for file, content in utf8_files:
826
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)
828
control_files.unlock()
829
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.
831
def initialize(self, a_bzrdir):
832
"""Create a branch of this format in a_bzrdir."""
1626
833
raise NotImplementedError(self.initialize)
1628
835
def is_supported(self):
1629
836
"""Is this format supported?
1631
838
Supported formats can be initialized and opened.
1632
Unsupported formats may not support initialization or committing or
839
Unsupported formats may not support initialization or committing or
1633
840
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):
844
def open(self, a_bzrdir, _found=False):
1662
845
"""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.
847
_found is a private parameter, do not use it. It is used to indicate
848
if format probing has already be done.
1671
850
raise NotImplementedError(self.open)
1674
853
def register_format(klass, format):
1675
"""Register a metadir format."""
1676
854
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
857
def set_default_format(klass, format):
1683
858
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
861
def unregister_format(klass, format):
862
assert klass._formats[format.get_format_string()] is format
1695
863
del klass._formats[format.get_format_string()]
1697
865
def __str__(self):
1698
return self.get_format_description().rstrip()
866
return self.get_format_string().rstrip()
1700
868
def supports_tags(self):
1701
869
"""True if this format supports tags stored in the branch"""
1702
870
return False # by default
1705
class BranchHooks(Hooks):
872
# XXX: Probably doesn't really belong here -- mbp 20070212
873
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
875
branch_transport = a_bzrdir.get_branch_transport(self)
876
control_files = lockable_files.LockableFiles(branch_transport,
877
lock_filename, lock_class)
878
control_files.create_lock()
879
control_files.lock_write()
881
for filename, content in utf8_files:
882
control_files.put_utf8(filename, content)
884
control_files.unlock()
887
class BranchHooks(dict):
1706
888
"""A dictionary mapping hook name to a list of callables for branch hooks.
1708
890
e.g. ['set_rh'] Is the list of items to be called when the
1709
891
set_revision_history function is invoked.
1715
897
These are all empty initially, because by default nothing should get
1718
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))
901
# Introduced in 0.15:
902
# invoked whenever the revision history has been set
903
# with set_revision_history. The api signature is
904
# (branch, revision_history), and the branch will
907
# invoked after a push operation completes.
908
# the api signature is
910
# containing the members
911
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
912
# where local is the local branch or None, master is the target
913
# master branch, and the rest should be self explanatory. The source
914
# is read locked and the target branches write locked. Source will
915
# be the local low-latency branch.
916
self['post_push'] = []
917
# invoked after a pull operation completes.
918
# the api signature is
920
# containing the members
921
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
922
# where local is the local branch or None, master is the target
923
# master branch, and the rest should be self explanatory. The source
924
# is read locked and the target branches write locked. The local
925
# branch is the low-latency branch.
926
self['post_pull'] = []
927
# invoked after a commit operation completes.
928
# the api signature is
929
# (local, master, old_revno, old_revid, new_revno, new_revid)
930
# old_revid is NULL_REVISION for the first commit to a branch.
931
self['post_commit'] = []
932
# invoked after a uncommit operation completes.
933
# the api signature is
934
# (local, master, old_revno, old_revid, new_revno, new_revid) where
935
# local is the local branch or None, master is the target branch,
936
# and an empty branch recieves new_revno of 0, new_revid of None.
937
self['post_uncommit'] = []
939
def install_hook(self, hook_name, a_callable):
940
"""Install a_callable in to the hook hook_name.
942
:param hook_name: A hook name. See the __init__ method of BranchHooks
943
for the complete list of hooks.
944
:param a_callable: The callable to be invoked when the hook triggers.
945
The exact signature will depend on the hook - see the __init__
946
method of BranchHooks for details on each hook.
949
self[hook_name].append(a_callable)
951
raise errors.UnknownHook('branch', hook_name)
1798
954
# install the default hooks into the Branch class.
1799
955
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
958
class BzrBranchFormat4(BranchFormat):
1919
959
"""Bzr branch format 4.
1927
967
"""See BranchFormat.get_format_description()."""
1928
968
return "Branch format 4"
1930
def initialize(self, a_bzrdir, name=None):
970
def initialize(self, a_bzrdir):
1931
971
"""Create a branch of this format in a_bzrdir."""
1932
972
utf8_files = [('revision-history', ''),
1933
973
('branch-name', ''),
1935
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
975
return self._initialize_helper(a_bzrdir, utf8_files,
1936
976
lock_type='branch4', set_format=False)
1938
978
def __init__(self):
1939
979
super(BzrBranchFormat4, self).__init__()
1940
980
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()
982
def open(self, a_bzrdir, _found=False):
983
"""Return the branch object for a_bzrdir
1946
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1947
"""See BranchFormat.open()."""
985
_found is a private parameter, do not use it. It is used to indicate
986
if format probing has already be done.
1949
989
# we are being called directly and must probe.
1950
990
raise NotImplementedError
1951
991
return BzrBranch(_format=self,
1952
992
_control_files=a_bzrdir._control_files,
1953
993
a_bzrdir=a_bzrdir,
1955
994
_repository=a_bzrdir.open_repository())
1957
996
def __str__(self):
1958
997
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.
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)
1984
control_files = lockable_files.LockableFiles(transport, 'lock',
1986
return self._branch_class()(_format=self,
1987
_control_files=control_files,
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):
1000
class BzrBranchFormat5(BranchFormat):
2005
1001
"""Bzr branch format 5.
2007
1003
This format has:
2058
1065
"""See BranchFormat.get_format_description()."""
2059
1066
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
1068
def initialize(self, a_bzrdir):
1069
"""Create a branch of this format in a_bzrdir."""
1070
utf8_files = [('last-revision', '0 null:\n'),
1071
('branch-name', ''),
1072
('branch.conf', ''),
1075
return self._initialize_helper(a_bzrdir, utf8_files)
1077
def open(self, a_bzrdir, _found=False):
1078
"""Return the branch object for a_bzrdir
1080
_found is a private parameter, do not use it. It is used to indicate
1081
if format probing has already be done.
1084
format = BranchFormat.find_format(a_bzrdir)
1085
assert format.__class__ == self.__class__
1086
transport = a_bzrdir.get_branch_transport(None)
1087
control_files = lockable_files.LockableFiles(transport, 'lock',
1089
return BzrBranch6(_format=self,
1090
_control_files=control_files,
1092
_repository=a_bzrdir.find_repository())
1094
def supports_tags(self):
2152
1098
class BranchReferenceFormat(BranchFormat):
2167
1113
def get_format_description(self):
2168
1114
"""See BranchFormat.get_format_description()."""
2169
1115
return "Checkout reference format 1"
2171
def get_reference(self, a_bzrdir):
2172
"""See BranchFormat.get_reference()."""
2173
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):
1117
def initialize(self, a_bzrdir, target_branch=None):
2182
1118
"""Create a branch of this format in a_bzrdir."""
2183
1119
if target_branch is None:
2184
1120
# this format does not implement branch itself, thus the implicit
2185
1121
# creation contract must see it as uninitializable
2186
1122
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)
1123
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1124
branch_transport = a_bzrdir.get_branch_transport(self)
2189
1125
branch_transport.put_bytes('location',
2190
target_branch.bzrdir.user_url)
1126
target_branch.bzrdir.root_transport.base)
2191
1127
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)
1128
return self.open(a_bzrdir, _found=True)
2198
1130
def __init__(self):
2199
1131
super(BranchReferenceFormat, self).__init__()
2200
1132
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2201
self._matchingbzrdir.set_branch_format(self)
2203
1134
def _make_reference_clone_function(format, a_branch):
2204
1135
"""Create a clone() routine for a branch dynamically."""
2205
def clone(to_bzrdir, revision_id=None,
2206
repository_policy=None):
1136
def clone(to_bzrdir, revision_id=None):
2207
1137
"""See Branch.clone()."""
2208
return format.initialize(to_bzrdir, target_branch=a_branch)
1138
return format.initialize(to_bzrdir, a_branch)
2209
1139
# cannot obey revision_id limits when cloning a reference ...
2210
1140
# FIXME RBC 20060210 either nuke revision_id for clone, or
2211
1141
# 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):
1144
def open(self, a_bzrdir, _found=False):
2216
1145
"""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.
1147
_found is a private parameter, do not use it. It is used to indicate
1148
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" %
2234
if location is None:
2235
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)
1151
format = BranchFormat.find_format(a_bzrdir)
1152
assert format.__class__ == self.__class__
1153
transport = a_bzrdir.get_branch_transport(None)
1154
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
1155
result = real_bzrdir.open_branch()
2240
1156
# this changes the behaviour of result.clone to create a new reference
2241
1157
# rather than a copy of the content of the branch.
2242
1158
# 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
1168
# formats which have no format string are not discoverable
2262
1169
# 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)
1170
__default_format = BzrBranchFormat5()
1171
BranchFormat.register_format(__default_format)
2268
1172
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)
1173
BranchFormat.register_format(BzrBranchFormat6())
1174
BranchFormat.set_default_format(__default_format)
2273
1175
_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):
1178
class BzrBranch(Branch):
2297
1179
"""A branch stored in the actual filesystem.
2299
1181
Note that it's "local" in the context of the filesystem; it doesn't
2300
1182
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2301
1183
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
def __init__(self, _format=None,
2313
_control_files=None, a_bzrdir=None, name=None,
2314
_repository=None, ignore_fallbacks=False):
2315
"""Create new branch object at a particular location."""
1186
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
1187
relax_version_check=DEPRECATED_PARAMETER, _format=None,
1188
_control_files=None, a_bzrdir=None, _repository=None):
1189
"""Create new branch object at a particular location.
1191
transport -- A Transport object, defining how to access files.
1193
init -- If True, create new control files in a previously
1194
unversioned directory. If False, the branch must already
1197
relax_version_check -- If true, the usual check for the branch
1198
version is not applied. This is intended only for
1199
upgrade/recovery type use; it's not guaranteed that
1200
all operations will work on old format branches.
1202
Branch.__init__(self)
2316
1203
if a_bzrdir is None:
2317
raise ValueError('a_bzrdir must be supplied')
1204
self.bzrdir = bzrdir.BzrDir.open(transport.base)
2319
1206
self.bzrdir = a_bzrdir
1207
# self._transport used to point to the directory containing the
1208
# control directory, but was not used - now it's just the transport
1209
# for the branch control files. mbp 20070212
2320
1210
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
1211
self._format = _format
2326
1212
if _control_files is None:
2327
1213
raise ValueError('BzrBranch _control_files is None')
2328
1214
self.control_files = _control_files
2329
1215
self._transport = _control_files._transport
1216
if deprecated_passed(init):
1217
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
1218
"deprecated as of bzr 0.8. Please use Branch.create().",
1222
# this is slower than before deprecation, oh well never mind.
1223
# -> its deprecated.
1224
self._initialize(transport.base)
1225
self._check_format(_format)
1226
if deprecated_passed(relax_version_check):
1227
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
1228
"relax_version_check parameter is deprecated as of bzr 0.8. "
1229
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
1233
if (not relax_version_check
1234
and not self._format.is_supported()):
1235
raise errors.UnsupportedFormatError(format=fmt)
1236
if deprecated_passed(transport):
1237
warn("BzrBranch.__init__(transport=XXX...): The transport "
1238
"parameter is deprecated as of bzr 0.8. "
1239
"Please use Branch.open, or bzrdir.open_branch().",
2330
1242
self.repository = _repository
2331
Branch.__init__(self)
2333
1244
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,
1245
return '%s(%r)' % (self.__class__.__name__, self.base)
2340
1247
__repr__ = __str__
2346
1253
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')
1255
def _finish_transaction(self):
1256
"""Exit the current transaction."""
1257
return self.control_files._finish_transaction()
1259
def get_transaction(self):
1260
"""Return the current active transaction.
1262
If no transaction is active, this returns a passthrough object
1263
for which all data is immediately flushed and no caching happens.
1265
# this is an explicit function so that we can do tricky stuff
1266
# when the storage in rev_storage is elsewhere.
1267
# we probably need to hook the two 'lock a location' and
1268
# 'have a transaction' together more delicately, so that
1269
# we can have two locks (branch and storage) and one transaction
1270
# ... and finishing the transaction unlocks both, but unlocking
1271
# does not. - RBC 20051121
1272
return self.control_files.get_transaction()
1274
def _set_transaction(self, transaction):
1275
"""Set a new active transaction."""
1276
return self.control_files._set_transaction(transaction)
1278
def abspath(self, name):
1279
"""See Branch.abspath."""
1280
return self.control_files._transport.abspath(name)
1282
def _check_format(self, format):
1283
"""Identify the branch format if needed.
1285
The format is stored as a reference to the format object in
1286
self._format for code that needs to check it later.
1288
The format parameter is either None or the branch format class
1289
used to open this branch.
1291
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
1294
format = BranchFormat.find_format(self.bzrdir)
1295
self._format = format
1296
mutter("got branch format %s", self._format)
1299
def get_root_id(self):
1300
"""See Branch.get_root_id."""
1301
tree = self.repository.revision_tree(self.last_revision())
1302
return tree.inventory.root.file_id
2351
1304
def is_locked(self):
2352
1305
return self.control_files.is_locked()
2354
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()
1307
def lock_write(self):
1308
self.repository.lock_write()
2372
return BranchWriteLockResult(self.unlock,
2373
self.control_files.lock_write(token=token))
1310
self.control_files.lock_write()
2376
self.repository.unlock()
1312
self.repository.unlock()
2379
1315
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()
1316
self.repository.lock_read()
2396
1318
self.control_files.lock_read()
2400
self.repository.unlock()
1320
self.repository.unlock()
2403
@only_raises(errors.LockNotHeld, errors.LockBroken)
2404
1323
def unlock(self):
1324
# TODO: test for failed two phase locks. This is known broken.
2406
1326
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()
1328
self.repository.unlock()
2417
1330
def peek_lock_mode(self):
2418
1331
if self.control_files._lock_count == 0:
2428
1341
"""See Branch.print_file."""
2429
1342
return self.repository.print_file(file, revision_id)
1345
def append_revision(self, *revision_ids):
1346
"""See Branch.append_revision."""
1347
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1348
for revision_id in revision_ids:
1349
_mod_revision.check_not_reserved_id(revision_id)
1350
mutter("add {%s} to revision-history" % revision_id)
1351
rev_history = self.revision_history()
1352
rev_history.extend(revision_ids)
1353
self.set_revision_history(rev_history)
2431
1355
def _write_revision_history(self, history):
2432
1356
"""Factored out of set_revision_history.
2434
1358
This performs the actual writing to disk.
2435
1359
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())
1360
self.control_files.put_bytes(
1361
'revision-history', '\n'.join(history))
2440
1363
@needs_write_lock
2441
1364
def set_revision_history(self, rev_history):
2442
1365
"""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)
1366
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
2457
1367
self._write_revision_history(rev_history)
2458
self._clear_cached_state()
2459
self._cache_revision_history(rev_history)
1368
transaction = self.get_transaction()
1369
history = transaction.map.find_revision_history()
1370
if history is not None:
1371
# update the revision history in the identity map.
1372
history[:] = list(rev_history)
1373
# this call is disabled because revision_history is
1374
# not really an object yet, and the transaction is for objects.
1375
# transaction.register_dirty(history)
1377
transaction.map.add_revision_history(rev_history)
1378
# this call is disabled because revision_history is
1379
# not really an object yet, and the transaction is for objects.
1380
# transaction.register_clean(history)
2460
1381
for hook in Branch.hooks['set_rh']:
2461
1382
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
1384
@needs_write_lock
2495
1385
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
1386
revision_id = osutils.safe_revision_id(revision_id)
2510
1387
history = self._lefthand_history(revision_id)
2511
if len(history) != revno:
2512
raise AssertionError('%d != %d' % (len(history), revno))
1388
assert len(history) == revno, '%d != %d' % (len(history), revno)
2513
1389
self.set_revision_history(history)
2515
1391
def _gen_revision_history(self):
2516
history = self._transport.get_bytes('revision-history').split('\n')
1392
history = self.control_files.get('revision-history').read().split('\n')
2517
1393
if history[-1:] == ['']:
2518
1394
# There shouldn't be a trailing newline, but just in case.
1399
def revision_history(self):
1400
"""See Branch.revision_history."""
1401
transaction = self.get_transaction()
1402
history = transaction.map.find_revision_history()
1403
if history is not None:
1404
# mutter("cache hit for revision-history in %s", self)
1405
return list(history)
1406
history = self._gen_revision_history()
1407
transaction.map.add_revision_history(history)
1408
# this call is disabled because revision_history is
1409
# not really an object yet, and the transaction is for objects.
1410
# transaction.register_clean(history, precious=True)
1411
return list(history)
1413
def _lefthand_history(self, revision_id, last_rev=None,
1415
# stop_revision must be a descendant of last_revision
1416
stop_graph = self.repository.get_revision_graph(revision_id)
1417
if last_rev is not None and last_rev not in stop_graph:
1418
# our previous tip is not merged into stop_revision
1419
raise errors.DivergedBranches(self, other_branch)
1420
# make a new revision history from the graph
1421
current_rev_id = revision_id
1423
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1424
new_history.append(current_rev_id)
1425
current_rev_id_parents = stop_graph[current_rev_id]
1427
current_rev_id = current_rev_id_parents[0]
1429
current_rev_id = None
1430
new_history.reverse()
2522
1433
@needs_write_lock
2523
1434
def generate_revision_history(self, revision_id, last_rev=None,
2524
1435
other_branch=None):
2530
1441
:param other_branch: The other branch that DivergedBranches should
2531
1442
raise with respect to.
1444
revision_id = osutils.safe_revision_id(revision_id)
2533
1445
self.set_revision_history(self._lefthand_history(revision_id,
2534
1446
last_rev, other_branch))
1449
def update_revisions(self, other, stop_revision=None):
1450
"""See Branch.update_revisions."""
1453
if stop_revision is None:
1454
stop_revision = other.last_revision()
1455
if stop_revision is None:
1456
# if there are no commits, we're done.
1459
stop_revision = osutils.safe_revision_id(stop_revision)
1460
# whats the current last revision, before we fetch [and change it
1462
last_rev = self.last_revision()
1463
# we fetch here regardless of whether we need to so that we pickup
1465
self.fetch(other, stop_revision)
1466
my_ancestry = self.repository.get_ancestry(last_rev)
1467
if stop_revision in my_ancestry:
1468
# last_revision is a descendant of stop_revision
1470
self.generate_revision_history(stop_revision, last_rev=last_rev,
2536
1475
def basis_tree(self):
2537
1476
"""See Branch.basis_tree."""
2538
1477
return self.repository.revision_tree(self.last_revision())
1479
@deprecated_method(zero_eight)
1480
def working_tree(self):
1481
"""Create a Working tree object for this branch."""
1483
from bzrlib.transport.local import LocalTransport
1484
if (self.base.find('://') != -1 or
1485
not isinstance(self._transport, LocalTransport)):
1486
raise NoWorkingTree(self.base)
1487
return self.bzrdir.open_workingtree()
1490
def pull(self, source, overwrite=False, stop_revision=None,
1491
_hook_master=None, _run_hooks=True):
1494
:param _hook_master: Private parameter - set the branch to
1495
be supplied as the master to push hooks.
1496
:param _run_hooks: Private parameter - allow disabling of
1497
hooks, used when pushing to a master branch.
1499
result = PullResult()
1500
result.source_branch = source
1501
result.target_branch = self
1504
result.old_revno, result.old_revid = self.last_revision_info()
1506
self.update_revisions(source, stop_revision)
1507
except DivergedBranches:
1511
if stop_revision is None:
1512
stop_revision = source.last_revision()
1513
self.generate_revision_history(stop_revision)
1514
result.tag_conflicts = source.tags.merge_to(self.tags)
1515
result.new_revno, result.new_revid = self.last_revision_info()
1517
result.master_branch = _hook_master
1518
result.local_branch = self
1520
result.master_branch = self
1521
result.local_branch = None
1523
for hook in Branch.hooks['post_pull']:
2540
1529
def _get_parent_location(self):
2541
1530
_locs = ['parent', 'pull', 'x-pull']
2542
1531
for l in _locs:
2544
return self._transport.get_bytes(l).strip('\n')
2545
except errors.NoSuchFile:
1533
return self.control_files.get(l).read().strip('\n')
2549
def _basic_push(self, target, overwrite, stop_revision):
2550
"""Basic implementation of push without bound branches or hooks.
2552
Must be called with source read locked and target write locked.
1539
def push(self, target, overwrite=False, stop_revision=None,
1540
_hook_master=None, _run_hooks=True):
1543
:param _hook_master: Private parameter - set the branch to
1544
be supplied as the master to push hooks.
1545
:param _run_hooks: Private parameter - allow disabling of
1546
hooks, used when pushing to a master branch.
2554
result = BranchPushResult()
1548
result = PushResult()
2555
1549
result.source_branch = self
2556
1550
result.target_branch = target
2557
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,
2568
result.new_revno, result.new_revid = target.last_revision_info()
1553
result.old_revno, result.old_revid = target.last_revision_info()
1555
target.update_revisions(self, stop_revision)
1556
except DivergedBranches:
1560
target.set_revision_history(self.revision_history())
1561
result.tag_conflicts = self.tags.merge_to(target.tags)
1562
result.new_revno, result.new_revid = target.last_revision_info()
1564
result.master_branch = _hook_master
1565
result.local_branch = target
1567
result.master_branch = target
1568
result.local_branch = None
1570
for hook in Branch.hooks['post_push']:
2571
def get_stacked_on_url(self):
2572
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1576
def get_parent(self):
1577
"""See Branch.get_parent."""
1579
assert self.base[-1] == '/'
1580
parent = self._get_parent_location()
1583
# This is an old-format absolute path to a local branch
1584
# turn it into a url
1585
if parent.startswith('/'):
1586
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1588
return urlutils.join(self.base[:-1], parent)
1589
except errors.InvalidURLJoin, e:
1590
raise errors.InaccessibleParent(parent, self.base)
1592
def get_push_location(self):
1593
"""See Branch.get_push_location."""
1594
push_loc = self.get_config().get_user_option('push_location')
2574
1597
def set_push_location(self, location):
2575
1598
"""See Branch.set_push_location."""
2577
1600
'push_location', location,
2578
1601
store=_mod_config.STORE_LOCATION_NORECURSE)
1604
def set_parent(self, url):
1605
"""See Branch.set_parent."""
1606
# TODO: Maybe delete old location files?
1607
# URLs should never be unicode, even on the local fs,
1608
# FIXUP this and get_parent in a future branch format bump:
1609
# read and rewrite the file, and have the new format code read
1610
# using .get not .get_utf8. RBC 20060125
1612
if isinstance(url, unicode):
1614
url = url.encode('ascii')
1615
except UnicodeEncodeError:
1616
raise bzrlib.errors.InvalidURL(url,
1617
"Urls must be 7-bit ascii, "
1618
"use bzrlib.urlutils.escape")
1619
url = urlutils.relative_url(self.base, url)
1620
self._set_parent_location(url)
2580
1622
def _set_parent_location(self, url):
2581
1623
if url is None:
2582
self._transport.delete('parent')
1624
self.control_files._transport.delete('parent')
2584
self._transport.put_bytes('parent', url + '\n',
2585
mode=self.bzrdir._get_file_mode())
1626
assert isinstance(url, str)
1627
self.control_files.put_bytes('parent', url + '\n')
1629
@deprecated_function(zero_nine)
1630
def tree_config(self):
1631
"""DEPRECATED; call get_config instead.
1632
TreeConfig has become part of BranchConfig."""
1633
return TreeConfig(self)
2588
1636
class BzrBranch5(BzrBranch):
2589
"""A format 5 branch. This supports new features over plain branches.
1637
"""A format 5 branch. This supports new features over plan branches.
2591
1639
It has support for a master_branch which is the data for bound branches.
1647
super(BzrBranch5, self).__init__(_format=_format,
1648
_control_files=_control_files,
1650
_repository=_repository)
1653
def pull(self, source, overwrite=False, stop_revision=None,
1655
"""Extends branch.pull to be bound branch aware.
1657
:param _run_hooks: Private parameter used to force hook running
1658
off during bound branch double-pushing.
1660
bound_location = self.get_bound_location()
1661
master_branch = None
1662
if bound_location and source.base != bound_location:
1663
# not pulling from master, so we need to update master.
1664
master_branch = self.get_master_branch()
1665
master_branch.lock_write()
1668
# pull from source into master.
1669
master_branch.pull(source, overwrite, stop_revision,
1671
return super(BzrBranch5, self).pull(source, overwrite,
1672
stop_revision, _hook_master=master_branch,
1673
_run_hooks=_run_hooks)
1676
master_branch.unlock()
1679
def push(self, target, overwrite=False, stop_revision=None):
1680
"""Updates branch.push to be bound branch aware."""
1681
bound_location = target.get_bound_location()
1682
master_branch = None
1683
if bound_location and target.base != bound_location:
1684
# not pushing to master, so we need to update master.
1685
master_branch = target.get_master_branch()
1686
master_branch.lock_write()
1689
# push into the master from this branch.
1690
super(BzrBranch5, self).push(master_branch, overwrite,
1691
stop_revision, _run_hooks=False)
1692
# and push into the target branch from this. Note that we push from
1693
# this branch again, because its considered the highest bandwidth
1695
return super(BzrBranch5, self).push(target, overwrite,
1696
stop_revision, _hook_master=master_branch)
1699
master_branch.unlock()
2594
1701
def get_bound_location(self):
2596
return self._transport.get_bytes('bound')[:-1]
1703
return self.control_files.get_utf8('bound').read()[:-1]
2597
1704
except errors.NoSuchFile:
2600
1707
@needs_read_lock
2601
def get_master_branch(self, possible_transports=None):
1708
def get_master_branch(self):
2602
1709
"""Return the branch we are bound to.
2604
1711
:return: Either a Branch, or None
2606
1713
This could memoise the branch, but if thats done
2666
1787
return self.set_bound_location(None)
2668
1789
@needs_write_lock
2669
def update(self, possible_transports=None):
2670
"""Synchronise this branch with the master branch if any.
1791
"""Synchronise this branch with the master branch if any.
2672
1793
:return: None or the last_revision that was pivoted out during the
2675
master = self.get_master_branch(possible_transports)
1796
master = self.get_master_branch()
2676
1797
if master is not None:
2677
old_tip = _mod_revision.ensure_null(self.last_revision())
1798
old_tip = self.last_revision()
2678
1799
self.pull(master, overwrite=True)
2679
if self.repository.get_graph().is_ancestor(old_tip,
2680
_mod_revision.ensure_null(self.last_revision())):
1800
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:
1806
class BzrBranchExperimental(BzrBranch5):
1807
"""Bzr experimental branch format
1810
- a revision-history file.
1812
- a lock dir guarding the branch itself
1813
- all of this stored in a branch/ subdirectory
1814
- works with shared repositories.
1815
- a tag dictionary in the branch
1817
This format is new in bzr 0.15, but shouldn't be used for real data,
1820
This class acts as it's own BranchFormat.
1823
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1826
def get_format_string(cls):
1827
"""See BranchFormat.get_format_string()."""
1828
return "Bazaar-NG branch format experimental\n"
1831
def get_format_description(cls):
1832
"""See BranchFormat.get_format_description()."""
1833
return "Experimental branch format"
1836
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1838
branch_transport = a_bzrdir.get_branch_transport(cls)
1839
control_files = lockable_files.LockableFiles(branch_transport,
1840
lock_filename, lock_class)
1841
control_files.create_lock()
1842
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')
1844
for filename, content in utf8_files:
1845
control_files.put_utf8(filename, content)
1847
control_files.unlock()
1850
def initialize(cls, a_bzrdir):
1851
"""Create a branch of this format in a_bzrdir."""
1852
utf8_files = [('format', cls.get_format_string()),
1853
('revision-history', ''),
1854
('branch-name', ''),
1857
cls._initialize_control_files(a_bzrdir, utf8_files,
1858
'lock', lockdir.LockDir)
1859
return cls.open(a_bzrdir, _found=True)
1862
def open(cls, a_bzrdir, _found=False):
1863
"""Return the branch object for a_bzrdir
1865
_found is a private parameter, do not use it. It is used to indicate
1866
if format probing has already be done.
1869
format = BranchFormat.find_format(a_bzrdir)
1870
assert format.__class__ == cls
1871
transport = a_bzrdir.get_branch_transport(None)
1872
control_files = lockable_files.LockableFiles(transport, 'lock',
1874
return cls(_format=cls,
1875
_control_files=control_files,
1877
_repository=a_bzrdir.find_repository())
1880
def is_supported(cls):
1883
def _make_tags(self):
1884
return BasicTags(self)
1887
def supports_tags(cls):
1891
BranchFormat.register_format(BzrBranchExperimental)
1894
class BzrBranch6(BzrBranch5):
1897
def last_revision_info(self):
1898
revision_string = self.control_files.get('last-revision').read()
2720
1899
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2721
1900
revision_id = cache_utf8.get_cached_utf8(revision_id)
2722
1901
revno = int(revno)
2723
1902
return revno, revision_id
1904
def last_revision(self):
1905
"""Return last revision id, or None"""
1906
revision_id = self.last_revision_info()[1]
1907
if revision_id == _mod_revision.NULL_REVISION:
2725
1911
def _write_last_revision_info(self, revno, revision_id):
2726
1912
"""Simply write out the revision id, with no checks.
2731
1917
Intended to be called by set_last_revision_info and
2732
1918
_write_revision_history.
2734
revision_id = _mod_revision.ensure_null(revision_id)
1920
if revision_id is None:
1921
revision_id = 'null:'
2735
1922
out_string = '%d %s\n' % (revno, revision_id)
2736
self._transport.put_bytes('last-revision', out_string,
2737
mode=self.bzrdir._get_file_mode())
1923
self.control_files.put_bytes('last-revision', out_string)
2739
1925
@needs_write_lock
2740
1926
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()
1927
revision_id = osutils.safe_revision_id(revision_id)
2743
1928
if self._get_append_revisions_only():
2744
1929
self._check_history_violation(revision_id)
2745
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2746
1930
self._write_last_revision_info(revno, revision_id)
2747
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)
1931
transaction = self.get_transaction()
1932
cached_history = transaction.map.find_revision_history()
1933
if cached_history is not None:
1934
transaction.map.remove_object(cached_history)
2763
1936
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):
1937
last_revision = self.last_revision()
1938
if last_revision is None:
2767
1940
if last_revision not in self._lefthand_history(revision_id):
2768
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1941
raise errors.AppendRevisionsOnlyViolation(self.base)
2770
1943
def _gen_revision_history(self):
2771
1944
"""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))
1946
history = list(self.repository.iter_reverse_revision_history(
1947
self.last_revision()))
2777
1951
def _write_revision_history(self, history):
2778
1952
"""Factored out of set_revision_history.
2800
1993
"""Set the parent branch"""
2801
1994
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
1996
def set_push_location(self, location):
2879
1997
"""See Branch.set_push_location."""
2880
1998
self._set_config_location('push_location', location)
2913
2031
"""See Branch.get_old_bound_location"""
2914
2032
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)
2034
def set_append_revisions_only(self, enabled):
2039
self.get_config().set_user_option('append_revisions_only', value)
2925
2041
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]
2042
value = self.get_config().get_user_option('append_revisions_only')
2043
return value == 'True'
2045
def _synchronize_history(self, destination, revision_id):
2046
"""Synchronize last revision and revision history between branches.
2048
This version is most efficient when the destination is also a
2049
BzrBranch6, but works for BzrBranch5, as long as the destination's
2050
repository contains all the lefthand ancestors of the intended
2051
last_revision. If not, set_last_revision_info will fail.
2053
:param destination: The branch to copy the history into
2054
:param revision_id: The revision-id to truncate history at. May
2055
be None to copy complete history.
2057
if revision_id is None:
2058
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,
2060
revno = self.revision_id_to_revno(revision_id)
2061
destination.set_last_revision_info(revno, revision_id)
2063
def _make_tags(self):
2064
return BasicTags(self)
2067
class BranchTestProviderAdapter(object):
2068
"""A tool to generate a suite testing multiple branch formats at once.
2070
This is done by copying the test once for each transport and injecting
2071
the transport_server, transport_readonly_server, and branch_format
2072
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)
2076
def __init__(self, transport_server, transport_readonly_server, formats):
2077
self._transport_server = transport_server
2078
self._transport_readonly_server = transport_readonly_server
2079
self._formats = formats
2081
def adapt(self, test):
2082
result = TestSuite()
2083
for branch_format, bzrdir_format in self._formats:
2084
new_test = deepcopy(test)
2085
new_test.transport_server = self._transport_server
2086
new_test.transport_readonly_server = self._transport_readonly_server
2087
new_test.bzrdir_format = bzrdir_format
2088
new_test.branch_format = branch_format
2089
def make_new_test_id():
2090
# the format can be either a class or an instance
2091
name = getattr(branch_format, '__name__',
2092
branch_format.__class__.__name__)
2093
new_id = "%s(%s)" % (new_test.id(), name)
2094
return lambda: new_id
2095
new_test.id = make_new_test_id()
2096
result.addTest(new_test)
2998
2100
######################################################################
3109
2198
new_branch.tags._set_tag_dict({})
3111
2200
# 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())
2201
new_branch.control_files.put_utf8('format',
2202
format.get_format_string())
3116
2204
# Clean up old files
3117
new_branch._transport.delete('revision-history')
2205
new_branch.control_files._transport.delete('revision-history')
3119
2207
branch.set_parent(None)
3120
except errors.NoSuchFile:
3122
2210
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
