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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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from copy import deepcopy
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from unittest import TestSuite
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from warnings import warn
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from bzrlib import (
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TransportConfig
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from bzrlib.repofmt.pack_repo import RepositoryFormatKnitPack5RichRoot
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from bzrlib.config import BranchConfig, TreeConfig
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.tag import (
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.hooks import HookPoint, Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
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HistoryMissing, InvalidRevisionId,
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InvalidRevisionNumber, LockError, NoSuchFile,
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NoSuchRevision, NoWorkingTree, NotVersionedError,
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NotBranchError, UninitializableFormat,
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UnlistableStore, UnlistableBranch,
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from bzrlib.hooks import Hooks
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from bzrlib.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine, zero_sixteen,
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from bzrlib.trace import mutter, note
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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if master is not None:
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master.break_lock()
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self.repository._format,
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self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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@deprecated_method(zero_eight)
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def open_downlevel(base):
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"""Open a branch which may be of an old format."""
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return Branch.open(base, _unsupported=True)
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def open(base, _unsupported=False):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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def open_containing(url, possible_transports=None):
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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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def open_containing(url):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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control, relpath = bzrdir.BzrDir.open_containing(url)
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return control.open_branch(), relpath
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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@deprecated_function(zero_eight)
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def initialize(base):
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"""Create a new working tree and branch, rooted at 'base' (url)
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NOTE: This will soon be deprecated in favour of creation
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return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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@deprecated_function(zero_eight)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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NOTE: This is unused.
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def get_config(self):
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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master is not None:
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# return the master branch value
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except errors.BzrError, e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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return self.get_config().get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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self.get_config().set_user_option('nickname', nick)
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nick = property(_get_nick, _set_nick)
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def is_locked(self):
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map and
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len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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* 'with-merges-without-common-ancestry' - filter out revisions
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that are in both ancestries
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
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(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
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branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
444
# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
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# Make sure we don't return revisions that are not part of the
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# start_revision_id ancestry.
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filtered = self._filter_start_non_ancestors(filtered)
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if direction == 'reverse':
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if direction == 'forward':
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return reversed(list(filtered))
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raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
468
"""Iterate over an inclusive range of sorted revisions."""
469
rev_iter = iter(merge_sorted_revisions)
470
if start_revision_id is not None:
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id != start_revision_id:
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# The decision to include the start or not
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# depends on the stop_rule if a stop is provided
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# so pop this node back into the iterator
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rev_iter = chain(iter([node]), rev_iter)
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if stop_revision_id is None:
483
for node in rev_iter:
484
rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'exclude':
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for node in rev_iter:
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rev_id = node.key[-1]
490
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':
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for node in rev_iter:
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rev_id = node.key[-1]
497
yield (rev_id, node.merge_depth, node.revno,
499
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.
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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:
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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':
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stop_rev = self.repository.get_revision(stop_revision_id)
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if stop_rev.parent_ids:
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left_parent = stop_rev.parent_ids[0]
518
left_parent = _mod_revision.NULL_REVISION
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# left_parent is the actual revision we want to stop logging at,
520
# since we want to show the merged revisions after the stop_rev too
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reached_stop_revision_id = False
522
revision_id_whitelist = []
523
for node in rev_iter:
524
rev_id = node.key[-1]
525
if rev_id == left_parent:
526
# reached the left parent after the stop_revision
528
if (not reached_stop_revision_id or
529
rev_id in revision_id_whitelist):
530
yield (rev_id, node.merge_depth, node.revno,
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if reached_stop_revision_id or rev_id == stop_revision_id:
533
# only do the merged revs of rev_id from now on
534
rev = self.repository.get_revision(rev_id)
536
reached_stop_revision_id = True
537
revision_id_whitelist.extend(rev.parent_ids)
539
raise ValueError('invalid stop_rule %r' % stop_rule)
541
def _filter_start_non_ancestors(self, rev_iter):
542
# If we started from a dotted revno, we want to consider it as a tip
543
# and don't want to yield revisions that are not part of its
544
# ancestry. Given the order guaranteed by the merge sort, we will see
545
# uninteresting descendants of the first parent of our tip before the
547
first = rev_iter.next()
548
(rev_id, merge_depth, revno, end_of_merge) = first
551
# We start at a mainline revision so by definition, all others
552
# revisions in rev_iter are ancestors
553
for node in rev_iter:
558
pmap = self.repository.get_parent_map([rev_id])
559
parents = pmap.get(rev_id, [])
561
whitelist.update(parents)
563
# If there is no parents, there is nothing of interest left
565
# FIXME: It's hard to test this scenario here as this code is never
566
# called in that case. -- vila 20100322
569
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
571
if rev_id in whitelist:
572
pmap = self.repository.get_parent_map([rev_id])
573
parents = pmap.get(rev_id, [])
574
whitelist.remove(rev_id)
575
whitelist.update(parents)
577
# We've reached the mainline, there is nothing left to
581
# A revision that is not part of the ancestry of our
584
yield (rev_id, merge_depth, revno, end_of_merge)
586
def leave_lock_in_place(self):
587
"""Tell this branch object not to release the physical lock when this
590
If lock_write doesn't return a token, then this method is not supported.
592
self.control_files.leave_in_place()
594
def dont_leave_lock_in_place(self):
595
"""Tell this branch object to release the physical lock when this
596
object is unlocked, even if it didn't originally acquire it.
598
If lock_write doesn't return a token, then this method is not supported.
600
self.control_files.dont_leave_in_place()
198
def abspath(self, name):
199
"""Return absolute filename for something in the branch
201
XXX: Robert Collins 20051017 what is this used for? why is it a branch
202
method and not a tree method.
204
raise NotImplementedError(self.abspath)
602
206
def bind(self, other):
603
207
"""Bind the local branch the other branch.
698
292
The delta is relative to its mainline predecessor, or the
699
293
empty tree for revision 1.
295
assert isinstance(revno, int)
701
296
rh = self.revision_history()
702
297
if not (1 <= revno <= len(rh)):
703
raise errors.InvalidRevisionNumber(revno)
298
raise InvalidRevisionNumber(revno)
704
299
return self.repository.get_revision_delta(rh[revno-1])
706
def get_stacked_on_url(self):
707
"""Get the URL this branch is stacked against.
301
@deprecated_method(zero_sixteen)
302
def get_root_id(self):
303
"""Return the id of this branches root
709
:raises NotStacked: If the branch is not stacked.
710
:raises UnstackableBranchFormat: If the branch does not support
305
Deprecated: branches don't have root ids-- trees do.
306
Use basis_tree().get_root_id() instead.
713
raise NotImplementedError(self.get_stacked_on_url)
308
raise NotImplementedError(self.get_root_id)
715
310
def print_file(self, file, revision_id):
716
311
"""Print `file` to stdout."""
717
312
raise NotImplementedError(self.print_file)
314
def append_revision(self, *revision_ids):
315
raise NotImplementedError(self.append_revision)
719
317
def set_revision_history(self, rev_history):
720
318
raise NotImplementedError(self.set_revision_history)
723
def set_parent(self, url):
724
"""See Branch.set_parent."""
725
# TODO: Maybe delete old location files?
726
# URLs should never be unicode, even on the local fs,
727
# FIXUP this and get_parent in a future branch format bump:
728
# read and rewrite the file. RBC 20060125
730
if isinstance(url, unicode):
732
url = url.encode('ascii')
733
except UnicodeEncodeError:
734
raise errors.InvalidURL(url,
735
"Urls must be 7-bit ascii, "
736
"use bzrlib.urlutils.escape")
737
url = urlutils.relative_url(self.base, url)
738
self._set_parent_location(url)
741
def set_stacked_on_url(self, url):
742
"""Set the URL this branch is stacked against.
744
:raises UnstackableBranchFormat: If the branch does not support
746
:raises UnstackableRepositoryFormat: If the repository does not support
749
if not self._format.supports_stacking():
750
raise errors.UnstackableBranchFormat(self._format, self.user_url)
751
# XXX: Changing from one fallback repository to another does not check
752
# that all the data you need is present in the new fallback.
753
# Possibly it should.
754
self._check_stackable_repo()
757
old_url = self.get_stacked_on_url()
758
except (errors.NotStacked, errors.UnstackableBranchFormat,
759
errors.UnstackableRepositoryFormat):
763
self._activate_fallback_location(url)
764
# write this out after the repository is stacked to avoid setting a
765
# stacked config that doesn't work.
766
self._set_config_location('stacked_on_location', url)
769
"""Change a branch to be unstacked, copying data as needed.
771
Don't call this directly, use set_stacked_on_url(None).
773
pb = ui.ui_factory.nested_progress_bar()
775
pb.update("Unstacking")
776
# The basic approach here is to fetch the tip of the branch,
777
# including all available ghosts, from the existing stacked
778
# repository into a new repository object without the fallbacks.
780
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
781
# correct for CHKMap repostiories
782
old_repository = self.repository
783
if len(old_repository._fallback_repositories) != 1:
784
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
787
old_repository.unlock()
788
old_repository.lock_read()
790
# Repositories don't offer an interface to remove fallback
791
# repositories today; take the conceptually simpler option and just
792
# reopen it. We reopen it starting from the URL so that we
793
# get a separate connection for RemoteRepositories and can
794
# stream from one of them to the other. This does mean doing
795
# separate SSH connection setup, but unstacking is not a
796
# common operation so it's tolerable.
797
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
798
new_repository = new_bzrdir.find_repository()
799
self.repository = new_repository
800
if self.repository._fallback_repositories:
801
raise AssertionError("didn't expect %r to have "
802
"fallback_repositories"
803
% (self.repository,))
804
# this is not paired with an unlock because it's just restoring
805
# the previous state; the lock's released when set_stacked_on_url
807
self.repository.lock_write()
808
# XXX: If you unstack a branch while it has a working tree
809
# with a pending merge, the pending-merged revisions will no
810
# longer be present. You can (probably) revert and remerge.
812
# XXX: This only fetches up to the tip of the repository; it
813
# doesn't bring across any tags. That's fairly consistent
814
# with how branch works, but perhaps not ideal.
815
self.repository.fetch(old_repository,
816
revision_id=self.last_revision(),
819
old_repository.unlock()
823
def _set_tags_bytes(self, bytes):
824
"""Mirror method for _get_tags_bytes.
826
:seealso: Branch._get_tags_bytes.
828
return _run_with_write_locked_target(self, self._transport.put_bytes,
831
320
def _cache_revision_history(self, rev_history):
832
321
"""Set the cached revision history to rev_history.
942
417
common_index = min(self_len, other_len) -1
943
418
if common_index >= 0 and \
944
419
self_history[common_index] != other_history[common_index]:
945
raise errors.DivergedBranches(self, other)
420
raise DivergedBranches(self, other)
947
422
if stop_revision is None:
948
423
stop_revision = other_len
425
assert isinstance(stop_revision, int)
950
426
if stop_revision > other_len:
951
427
raise errors.NoSuchRevision(self, stop_revision)
952
428
return other_history[self_len:stop_revision]
955
def update_revisions(self, other, stop_revision=None, overwrite=False,
430
def update_revisions(self, other, stop_revision=None):
957
431
"""Pull in new perfect-fit revisions.
959
433
:param other: Another Branch to pull from
960
434
:param stop_revision: Updated until the given revision
961
:param overwrite: Always set the branch pointer, rather than checking
962
to see if it is a proper descendant.
963
:param graph: A Graph object that can be used to query history
964
information. This can be None.
967
return InterBranch.get(other, self).update_revisions(stop_revision,
970
def import_last_revision_info(self, source_repo, revno, revid):
971
"""Set the last revision info, importing from another repo if necessary.
973
This is used by the bound branch code to upload a revision to
974
the master branch first before updating the tip of the local branch.
976
:param source_repo: Source repository to optionally fetch from
977
:param revno: Revision number of the new tip
978
:param revid: Revision id of the new tip
980
if not self.repository.has_same_location(source_repo):
981
self.repository.fetch(source_repo, revision_id=revid)
982
self.set_last_revision_info(revno, revid)
437
raise NotImplementedError(self.update_revisions)
984
439
def revision_id_to_revno(self, revision_id):
985
440
"""Given a revision id, return its revno"""
986
if _mod_revision.is_null(revision_id):
441
if revision_id is None:
443
revision_id = osutils.safe_revision_id(revision_id)
988
444
history = self.revision_history()
990
446
return history.index(revision_id) + 1
991
447
except ValueError:
992
raise errors.NoSuchRevision(self, revision_id)
448
raise bzrlib.errors.NoSuchRevision(self, revision_id)
995
450
def get_rev_id(self, revno, history=None):
996
451
"""Find the revision id of the specified revno."""
998
return _mod_revision.NULL_REVISION
999
last_revno, last_revid = self.last_revision_info()
1000
if revno == last_revno:
1002
if revno <= 0 or revno > last_revno:
1003
raise errors.NoSuchRevision(self, revno)
1004
distance_from_last = last_revno - revno
1005
if len(self._partial_revision_history_cache) <= distance_from_last:
1006
self._extend_partial_history(distance_from_last)
1007
return self._partial_revision_history_cache[distance_from_last]
455
history = self.revision_history()
456
if revno <= 0 or revno > len(history):
457
raise bzrlib.errors.NoSuchRevision(self, revno)
458
return history[revno - 1]
1010
def pull(self, source, overwrite=False, stop_revision=None,
1011
possible_transports=None, *args, **kwargs):
460
def pull(self, source, overwrite=False, stop_revision=None):
1012
461
"""Mirror source into this branch.
1014
463
This branch is considered to be 'local', having low latency.
1016
465
:returns: PullResult instance
1018
return InterBranch.get(source, self).pull(overwrite=overwrite,
1019
stop_revision=stop_revision,
1020
possible_transports=possible_transports, *args, **kwargs)
467
raise NotImplementedError(self.pull)
1022
def push(self, target, overwrite=False, stop_revision=None, *args,
469
def push(self, target, overwrite=False, stop_revision=None):
1024
470
"""Mirror this branch into target.
1026
472
This branch is considered to be 'local', having low latency.
1028
return InterBranch.get(self, target).push(overwrite, stop_revision,
1031
def lossy_push(self, target, stop_revision=None):
1032
"""Push deltas into another branch.
1034
:note: This does not, like push, retain the revision ids from
1035
the source branch and will, rather than adding bzr-specific
1036
metadata, push only those semantics of the revision that can be
1037
natively represented by this branch' VCS.
1039
:param target: Target branch
1040
:param stop_revision: Revision to push, defaults to last revision.
1041
:return: BranchPushResult with an extra member revidmap:
1042
A dictionary mapping revision ids from the target branch
1043
to new revision ids in the target branch, for each
1044
revision that was pushed.
1046
inter = InterBranch.get(self, target)
1047
lossy_push = getattr(inter, "lossy_push", None)
1048
if lossy_push is None:
1049
raise errors.LossyPushToSameVCS(self, target)
1050
return lossy_push(stop_revision)
474
raise NotImplementedError(self.push)
1052
476
def basis_tree(self):
1053
477
"""Return `Tree` object for last revision."""
1054
478
return self.repository.revision_tree(self.last_revision())
480
def rename_one(self, from_rel, to_rel):
483
This can change the directory or the filename or both.
485
raise NotImplementedError(self.rename_one)
487
def move(self, from_paths, to_name):
490
to_name must exist as a versioned directory.
492
If to_name exists and is a directory, the files are moved into
493
it, keeping their old names. If it is a directory,
495
Note that to_name is only the last component of the new name;
496
this doesn't change the directory.
498
This returns a list of (from_path, to_path) pairs for each
501
raise NotImplementedError(self.move)
1056
503
def get_parent(self):
1057
504
"""Return the parent location of the branch.
1059
This is the default location for pull/missing. The usual
506
This is the default location for push/pull/missing. The usual
1060
507
pattern is that the user can override it by specifying a
1063
parent = self._get_parent_location()
1066
# This is an old-format absolute path to a local branch
1067
# turn it into a url
1068
if parent.startswith('/'):
1069
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1071
return urlutils.join(self.base[:-1], parent)
1072
except errors.InvalidURLJoin, e:
1073
raise errors.InaccessibleParent(parent, self.user_url)
1075
def _get_parent_location(self):
1076
raise NotImplementedError(self._get_parent_location)
510
raise NotImplementedError(self.get_parent)
1078
512
def _set_config_location(self, name, url, config=None,
1079
513
make_relative=False):
1180
589
self.check_real_revno(revno)
1182
591
def check_real_revno(self, revno):
1184
593
Check whether a revno corresponds to a real revision.
1185
594
Zero (the NULL revision) is considered invalid
1187
596
if revno < 1 or revno > self.revno():
1188
raise errors.InvalidRevisionNumber(revno)
597
raise InvalidRevisionNumber(revno)
1190
599
@needs_read_lock
1191
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
600
def clone(self, to_bzrdir, revision_id=None):
1192
601
"""Clone this branch into to_bzrdir preserving all semantic values.
1194
Most API users will want 'create_clone_on_transport', which creates a
1195
new bzrdir and branch on the fly.
1197
603
revision_id: if not None, the revision history in the new branch will
1198
604
be truncated to end with revision_id.
1200
result = to_bzrdir.create_branch()
1203
if repository_policy is not None:
1204
repository_policy.configure_branch(result)
1205
self.copy_content_into(result, revision_id=revision_id)
606
result = self._format.initialize(to_bzrdir)
607
self.copy_content_into(result, revision_id=revision_id)
1210
610
@needs_read_lock
1211
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
611
def sprout(self, to_bzrdir, revision_id=None):
1212
612
"""Create a new line of development from the branch, into to_bzrdir.
1214
to_bzrdir controls the branch format.
1216
614
revision_id: if not None, the revision history in the new branch will
1217
615
be truncated to end with revision_id.
1219
if (repository_policy is not None and
1220
repository_policy.requires_stacking()):
1221
to_bzrdir._format.require_stacking(_skip_repo=True)
1222
result = to_bzrdir.create_branch()
1225
if repository_policy is not None:
1226
repository_policy.configure_branch(result)
1227
self.copy_content_into(result, revision_id=revision_id)
1228
result.set_parent(self.bzrdir.root_transport.base)
617
result = self._format.initialize(to_bzrdir)
618
self.copy_content_into(result, revision_id=revision_id)
619
result.set_parent(self.bzrdir.root_transport.base)
1233
622
def _synchronize_history(self, destination, revision_id):
1234
623
"""Synchronize last revision and revision history between branches.
1236
625
This version is most efficient when the destination is also a
1237
BzrBranch6, but works for BzrBranch5, as long as the destination's
1238
repository contains all the lefthand ancestors of the intended
1239
last_revision. If not, set_last_revision_info will fail.
626
BzrBranch5, but works for BzrBranch6 as long as the revision
627
history is the true lefthand parent history, and all of the revisions
628
are in the destination's repository. If not, set_revision_history
1241
631
:param destination: The branch to copy the history into
1242
632
:param revision_id: The revision-id to truncate history at. May
1243
633
be None to copy complete history.
1245
source_revno, source_revision_id = self.last_revision_info()
1246
if revision_id is None:
1247
revno, revision_id = source_revno, source_revision_id
1249
graph = self.repository.get_graph()
635
new_history = self.revision_history()
636
if revision_id is not None:
637
revision_id = osutils.safe_revision_id(revision_id)
1251
revno = graph.find_distance_to_null(revision_id,
1252
[(source_revision_id, source_revno)])
1253
except errors.GhostRevisionsHaveNoRevno:
1254
# Default to 1, if we can't find anything else
1256
destination.set_last_revision_info(revno, revision_id)
639
new_history = new_history[:new_history.index(revision_id) + 1]
641
rev = self.repository.get_revision(revision_id)
642
new_history = rev.get_history(self.repository)[1:]
643
destination.set_revision_history(new_history)
1258
645
@needs_read_lock
1259
646
def copy_content_into(self, destination, revision_id=None):
1273
659
destination.set_parent(parent)
1274
if self._push_should_merge_tags():
1275
self.tags.merge_to(destination.tags)
1277
def update_references(self, target):
1278
if not getattr(self._format, 'supports_reference_locations', False):
1280
reference_dict = self._get_all_reference_info()
1281
if len(reference_dict) == 0:
1283
old_base = self.base
1284
new_base = target.base
1285
target_reference_dict = target._get_all_reference_info()
1286
for file_id, (tree_path, branch_location) in (
1287
reference_dict.items()):
1288
branch_location = urlutils.rebase_url(branch_location,
1290
target_reference_dict.setdefault(
1291
file_id, (tree_path, branch_location))
1292
target._set_all_reference_info(target_reference_dict)
660
self.tags.merge_to(destination.tags)
1294
662
@needs_read_lock
1295
def check(self, refs):
1296
664
"""Check consistency of the branch.
1298
666
In particular this checks that revisions given in the revision-history
1299
do actually match up in the revision graph, and that they're all
667
do actually match up in the revision graph, and that they're all
1300
668
present in the repository.
1302
670
Callers will typically also want to check the repository.
1304
:param refs: Calculated refs for this branch as specified by
1305
branch._get_check_refs()
1306
672
:return: A BranchCheckResult.
1308
result = BranchCheckResult(self)
1309
last_revno, last_revision_id = self.last_revision_info()
1310
actual_revno = refs[('lefthand-distance', last_revision_id)]
1311
if actual_revno != last_revno:
1312
result.errors.append(errors.BzrCheckError(
1313
'revno does not match len(mainline) %s != %s' % (
1314
last_revno, actual_revno)))
1315
# TODO: We should probably also check that self.revision_history
1316
# matches the repository for older branch formats.
1317
# If looking for the code that cross-checks repository parents against
1318
# the iter_reverse_revision_history output, that is now a repository
674
mainline_parent_id = None
675
for revision_id in self.revision_history():
677
revision = self.repository.get_revision(revision_id)
678
except errors.NoSuchRevision, e:
679
raise errors.BzrCheckError("mainline revision {%s} not in repository"
681
# In general the first entry on the revision history has no parents.
682
# But it's not illegal for it to have parents listed; this can happen
683
# in imports from Arch when the parents weren't reachable.
684
if mainline_parent_id is not None:
685
if mainline_parent_id not in revision.parent_ids:
686
raise errors.BzrCheckError("previous revision {%s} not listed among "
688
% (mainline_parent_id, revision_id))
689
mainline_parent_id = revision_id
690
return BranchCheckResult(self)
1322
692
def _get_checkout_format(self):
1323
693
"""Return the most suitable metadir for a checkout of this branch.
1324
Weaves are used if this branch's repository uses weaves.
694
Weaves are used if this branch's repostory uses weaves.
1326
696
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1327
697
from bzrlib.repofmt import weaverepo
1332
702
format.set_branch_format(self._format)
1335
def create_clone_on_transport(self, to_transport, revision_id=None,
1336
stacked_on=None, create_prefix=False, use_existing_dir=False):
1337
"""Create a clone of this branch and its bzrdir.
1339
:param to_transport: The transport to clone onto.
1340
:param revision_id: The revision id to use as tip in the new branch.
1341
If None the tip is obtained from this branch.
1342
:param stacked_on: An optional URL to stack the clone on.
1343
:param create_prefix: Create any missing directories leading up to
1345
:param use_existing_dir: Use an existing directory if one exists.
1347
# XXX: Fix the bzrdir API to allow getting the branch back from the
1348
# clone call. Or something. 20090224 RBC/spiv.
1349
if revision_id is None:
1350
revision_id = self.last_revision()
1351
dir_to = self.bzrdir.clone_on_transport(to_transport,
1352
revision_id=revision_id, stacked_on=stacked_on,
1353
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1354
return dir_to.open_branch()
1356
705
def create_checkout(self, to_location, revision_id=None,
1357
lightweight=False, accelerator_tree=None,
1359
707
"""Create a checkout of a branch.
1361
709
:param to_location: The url to produce the checkout at
1362
710
:param revision_id: The revision to check out
1363
711
:param lightweight: If True, produce a lightweight checkout, otherwise,
1364
712
produce a bound branch (heavyweight checkout)
1365
:param accelerator_tree: A tree which can be used for retrieving file
1366
contents more quickly than the revision tree, i.e. a workingtree.
1367
The revision tree will be used for cases where accelerator_tree's
1368
content is different.
1369
:param hardlink: If true, hard-link files from accelerator_tree,
1371
713
:return: The tree of the created checkout
1373
715
t = transport.get_transport(to_location)
718
except errors.FileExists:
1376
721
format = self._get_checkout_format()
1377
722
checkout = format.initialize_on_transport(t)
1378
from_branch = BranchReferenceFormat().initialize(checkout,
723
BranchReferenceFormat().initialize(checkout, self)
1381
725
format = self._get_checkout_format()
1382
726
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1383
727
to_location, force_new_tree=False, format=format)
1384
728
checkout = checkout_branch.bzrdir
1385
729
checkout_branch.bind(self)
1386
# pull up to the specified revision_id to set the initial
730
# pull up to the specified revision_id to set the initial
1387
731
# branch tip correctly, and seed it with history.
1388
732
checkout_branch.pull(self, stop_revision=revision_id)
1390
tree = checkout.create_workingtree(revision_id,
1391
from_branch=from_branch,
1392
accelerator_tree=accelerator_tree,
733
tree = checkout.create_workingtree(revision_id)
1394
734
basis_tree = tree.basis_tree()
1395
735
basis_tree.lock_read()
1403
743
basis_tree.unlock()
1407
def reconcile(self, thorough=True):
1408
"""Make sure the data stored in this branch is consistent."""
1409
from bzrlib.reconcile import BranchReconciler
1410
reconciler = BranchReconciler(self, thorough=thorough)
1411
reconciler.reconcile()
1414
def reference_parent(self, file_id, path, possible_transports=None):
746
def reference_parent(self, file_id, path):
1415
747
"""Return the parent branch for a tree-reference file_id
1416
748
:param file_id: The file_id of the tree reference
1417
749
:param path: The path of the file_id in the tree
1418
750
:return: A branch associated with the file_id
1420
752
# FIXME should provide multiple branches, based on config
1421
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1422
possible_transports=possible_transports)
753
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1424
755
def supports_tags(self):
1425
756
return self._format.supports_tags()
1427
def automatic_tag_name(self, revision_id):
1428
"""Try to automatically find the tag name for a revision.
1430
:param revision_id: Revision id of the revision.
1431
:return: A tag name or None if no tag name could be determined.
1433
for hook in Branch.hooks['automatic_tag_name']:
1434
ret = hook(self, revision_id)
1439
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1441
"""Ensure that revision_b is a descendant of revision_a.
1443
This is a helper function for update_revisions.
1445
:raises: DivergedBranches if revision_b has diverged from revision_a.
1446
:returns: True if revision_b is a descendant of revision_a.
1448
relation = self._revision_relations(revision_a, revision_b, graph)
1449
if relation == 'b_descends_from_a':
1451
elif relation == 'diverged':
1452
raise errors.DivergedBranches(self, other_branch)
1453
elif relation == 'a_descends_from_b':
1456
raise AssertionError("invalid relation: %r" % (relation,))
1458
def _revision_relations(self, revision_a, revision_b, graph):
1459
"""Determine the relationship between two revisions.
1461
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1463
heads = graph.heads([revision_a, revision_b])
1464
if heads == set([revision_b]):
1465
return 'b_descends_from_a'
1466
elif heads == set([revision_a, revision_b]):
1467
# These branches have diverged
1469
elif heads == set([revision_a]):
1470
return 'a_descends_from_b'
1472
raise AssertionError("invalid heads: %r" % (heads,))
1475
759
class BranchFormat(object):
1476
760
"""An encapsulation of the initialization and open routines for a format.
1585
827
control_files = lockable_files.LockableFiles(branch_transport,
1586
828
lock_name, lock_class)
1587
829
control_files.create_lock()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
830
control_files.lock_write()
1597
utf8_files += [('format', self.get_format_string())]
832
control_files.put_utf8('format', self.get_format_string())
1599
for (filename, content) in utf8_files:
1600
branch_transport.put_bytes(
1602
mode=a_bzrdir._get_file_mode())
834
for file, content in utf8_files:
835
control_files.put_utf8(file, content)
1605
control_files.unlock()
1606
branch = self.open(a_bzrdir, name, _found=True)
1607
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
837
control_files.unlock()
838
return self.open(a_bzrdir, _found=True)
1610
def initialize(self, a_bzrdir, name=None):
1611
"""Create a branch of this format in a_bzrdir.
1613
:param name: Name of the colocated branch to create.
840
def initialize(self, a_bzrdir):
841
"""Create a branch of this format in a_bzrdir."""
1615
842
raise NotImplementedError(self.initialize)
1617
844
def is_supported(self):
1618
845
"""Is this format supported?
1620
847
Supported formats can be initialized and opened.
1621
Unsupported formats may not support initialization or committing or
848
Unsupported formats may not support initialization or committing or
1622
849
some other features depending on the reason for not being supported.
1626
def make_tags(self, branch):
1627
"""Create a tags object for branch.
1629
This method is on BranchFormat, because BranchFormats are reflected
1630
over the wire via network_name(), whereas full Branch instances require
1631
multiple VFS method calls to operate at all.
1633
The default implementation returns a disabled-tags instance.
1635
Note that it is normal for branch to be a RemoteBranch when using tags
1638
return DisabledTags(branch)
1640
def network_name(self):
1641
"""A simple byte string uniquely identifying this format for RPC calls.
1643
MetaDir branch formats use their disk format string to identify the
1644
repository over the wire. All in one formats such as bzr < 0.8, and
1645
foreign formats like svn/git and hg should use some marker which is
1646
unique and immutable.
1648
raise NotImplementedError(self.network_name)
1650
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
853
def open(self, a_bzrdir, _found=False):
1651
854
"""Return the branch object for a_bzrdir
1653
:param a_bzrdir: A BzrDir that contains a branch.
1654
:param name: Name of colocated branch to open
1655
:param _found: a private parameter, do not use it. It is used to
1656
indicate if format probing has already be done.
1657
:param ignore_fallbacks: when set, no fallback branches will be opened
1658
(if there are any). Default is to open fallbacks.
856
_found is a private parameter, do not use it. It is used to indicate
857
if format probing has already be done.
1660
859
raise NotImplementedError(self.open)
1663
862
def register_format(klass, format):
1664
"""Register a metadir format."""
1665
863
klass._formats[format.get_format_string()] = format
1666
# Metadir formats have a network name of their format string, and get
1667
# registered as class factories.
1668
network_format_registry.register(format.get_format_string(), format.__class__)
1671
866
def set_default_format(klass, format):
1672
867
klass._default_format = format
1674
def supports_set_append_revisions_only(self):
1675
"""True if this format supports set_append_revisions_only."""
1678
def supports_stacking(self):
1679
"""True if this format records a stacked-on branch."""
1683
870
def unregister_format(klass, format):
871
assert klass._formats[format.get_format_string()] is format
1684
872
del klass._formats[format.get_format_string()]
1686
874
def __str__(self):
1687
return self.get_format_description().rstrip()
875
return self.get_format_string().rstrip()
1689
877
def supports_tags(self):
1690
878
"""True if this format supports tags stored in the branch"""
1691
879
return False # by default
881
# XXX: Probably doesn't really belong here -- mbp 20070212
882
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
884
branch_transport = a_bzrdir.get_branch_transport(self)
885
control_files = lockable_files.LockableFiles(branch_transport,
886
lock_filename, lock_class)
887
control_files.create_lock()
888
control_files.lock_write()
890
for filename, content in utf8_files:
891
control_files.put_utf8(filename, content)
893
control_files.unlock()
1694
896
class BranchHooks(Hooks):
1695
897
"""A dictionary mapping hook name to a list of callables for branch hooks.
1697
899
e.g. ['set_rh'] Is the list of items to be called when the
1698
900
set_revision_history function is invoked.
1707
909
Hooks.__init__(self)
1708
self.create_hook(HookPoint('set_rh',
1709
"Invoked whenever the revision history has been set via "
1710
"set_revision_history. The api signature is (branch, "
1711
"revision_history), and the branch will be write-locked. "
1712
"The set_rh hook can be expensive for bzr to trigger, a better "
1713
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1714
self.create_hook(HookPoint('open',
1715
"Called with the Branch object that has been opened after a "
1716
"branch is opened.", (1, 8), None))
1717
self.create_hook(HookPoint('post_push',
1718
"Called after a push operation completes. post_push is called "
1719
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1720
"bzr client.", (0, 15), None))
1721
self.create_hook(HookPoint('post_pull',
1722
"Called after a pull operation completes. post_pull is called "
1723
"with a bzrlib.branch.PullResult object and only runs in the "
1724
"bzr client.", (0, 15), None))
1725
self.create_hook(HookPoint('pre_commit',
1726
"Called after a commit is calculated but before it is is "
1727
"completed. pre_commit is called with (local, master, old_revno, "
1728
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1729
"). old_revid is NULL_REVISION for the first commit to a branch, "
1730
"tree_delta is a TreeDelta object describing changes from the "
1731
"basis revision. hooks MUST NOT modify this delta. "
1732
" future_tree is an in-memory tree obtained from "
1733
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1736
"Called in the bzr client after a commit has completed. "
1737
"post_commit is called with (local, master, old_revno, old_revid, "
1738
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1739
"commit to a branch.", (0, 15), None))
1740
self.create_hook(HookPoint('post_uncommit',
1741
"Called in the bzr client after an uncommit completes. "
1742
"post_uncommit is called with (local, master, old_revno, "
1743
"old_revid, new_revno, new_revid) where local is the local branch "
1744
"or None, master is the target branch, and an empty branch "
1745
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1746
self.create_hook(HookPoint('pre_change_branch_tip',
1747
"Called in bzr client and server before a change to the tip of a "
1748
"branch is made. pre_change_branch_tip is called with a "
1749
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1750
"commit, uncommit will all trigger this hook.", (1, 6), None))
1751
self.create_hook(HookPoint('post_change_branch_tip',
1752
"Called in bzr client and server after a change to the tip of a "
1753
"branch is made. post_change_branch_tip is called with a "
1754
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1755
"commit, uncommit will all trigger this hook.", (1, 4), None))
1756
self.create_hook(HookPoint('transform_fallback_location',
1757
"Called when a stacked branch is activating its fallback "
1758
"locations. transform_fallback_location is called with (branch, "
1759
"url), and should return a new url. Returning the same url "
1760
"allows it to be used as-is, returning a different one can be "
1761
"used to cause the branch to stack on a closer copy of that "
1762
"fallback_location. Note that the branch cannot have history "
1763
"accessing methods called on it during this hook because the "
1764
"fallback locations have not been activated. When there are "
1765
"multiple hooks installed for transform_fallback_location, "
1766
"all are called with the url returned from the previous hook."
1767
"The order is however undefined.", (1, 9), None))
1768
self.create_hook(HookPoint('automatic_tag_name',
1769
"Called to determine an automatic tag name for a revision."
1770
"automatic_tag_name is called with (branch, revision_id) and "
1771
"should return a tag name or None if no tag name could be "
1772
"determined. The first non-None tag name returned will be used.",
1774
self.create_hook(HookPoint('post_branch_init',
1775
"Called after new branch initialization completes. "
1776
"post_branch_init is called with a "
1777
"bzrlib.branch.BranchInitHookParams. "
1778
"Note that init, branch and checkout (both heavyweight and "
1779
"lightweight) will all trigger this hook.", (2, 2), None))
1780
self.create_hook(HookPoint('post_switch',
1781
"Called after a checkout switches branch. "
1782
"post_switch is called with a "
1783
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
910
# Introduced in 0.15:
911
# invoked whenever the revision history has been set
912
# with set_revision_history. The api signature is
913
# (branch, revision_history), and the branch will
916
# invoked after a push operation completes.
917
# the api signature is
919
# containing the members
920
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
921
# where local is the local branch or None, master is the target
922
# master branch, and the rest should be self explanatory. The source
923
# is read locked and the target branches write locked. Source will
924
# be the local low-latency branch.
925
self['post_push'] = []
926
# invoked after a pull operation completes.
927
# the api signature is
929
# containing the members
930
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
931
# where local is the local branch or None, master is the target
932
# master branch, and the rest should be self explanatory. The source
933
# is read locked and the target branches write locked. The local
934
# branch is the low-latency branch.
935
self['post_pull'] = []
936
# invoked after a commit operation completes.
937
# the api signature is
938
# (local, master, old_revno, old_revid, new_revno, new_revid)
939
# old_revid is NULL_REVISION for the first commit to a branch.
940
self['post_commit'] = []
941
# invoked after a uncommit operation completes.
942
# the api signature is
943
# (local, master, old_revno, old_revid, new_revno, new_revid) where
944
# local is the local branch or None, master is the target branch,
945
# and an empty branch recieves new_revno of 0, new_revid of None.
946
self['post_uncommit'] = []
1787
949
# install the default hooks into the Branch class.
1788
950
Branch.hooks = BranchHooks()
1791
class ChangeBranchTipParams(object):
1792
"""Object holding parameters passed to *_change_branch_tip hooks.
1794
There are 5 fields that hooks may wish to access:
1796
:ivar branch: the branch being changed
1797
:ivar old_revno: revision number before the change
1798
:ivar new_revno: revision number after the change
1799
:ivar old_revid: revision id before the change
1800
:ivar new_revid: revision id after the change
1802
The revid fields are strings. The revno fields are integers.
1805
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1806
"""Create a group of ChangeBranchTip parameters.
1808
:param branch: The branch being changed.
1809
:param old_revno: Revision number before the change.
1810
:param new_revno: Revision number after the change.
1811
:param old_revid: Tip revision id before the change.
1812
:param new_revid: Tip revision id after the change.
1814
self.branch = branch
1815
self.old_revno = old_revno
1816
self.new_revno = new_revno
1817
self.old_revid = old_revid
1818
self.new_revid = new_revid
1820
def __eq__(self, other):
1821
return self.__dict__ == other.__dict__
1824
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1825
self.__class__.__name__, self.branch,
1826
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1829
class BranchInitHookParams(object):
1830
"""Object holding parameters passed to *_branch_init hooks.
1832
There are 4 fields that hooks may wish to access:
1834
:ivar format: the branch format
1835
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1836
:ivar name: name of colocated branch, if any (or None)
1837
:ivar branch: the branch created
1839
Note that for lightweight checkouts, the bzrdir and format fields refer to
1840
the checkout, hence they are different from the corresponding fields in
1841
branch, which refer to the original branch.
1844
def __init__(self, format, a_bzrdir, name, branch):
1845
"""Create a group of BranchInitHook parameters.
1847
:param format: the branch format
1848
:param a_bzrdir: the BzrDir where the branch will be/has been
1850
:param name: name of colocated branch, if any (or None)
1851
:param branch: the branch created
1853
Note that for lightweight checkouts, the bzrdir and format fields refer
1854
to the checkout, hence they are different from the corresponding fields
1855
in branch, which refer to the original branch.
1857
self.format = format
1858
self.bzrdir = a_bzrdir
1860
self.branch = branch
1862
def __eq__(self, other):
1863
return self.__dict__ == other.__dict__
1867
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1869
return "<%s of format:%s bzrdir:%s>" % (
1870
self.__class__.__name__, self.branch,
1871
self.format, self.bzrdir)
1874
class SwitchHookParams(object):
1875
"""Object holding parameters passed to *_switch hooks.
1877
There are 4 fields that hooks may wish to access:
1879
:ivar control_dir: BzrDir of the checkout to change
1880
:ivar to_branch: branch that the checkout is to reference
1881
:ivar force: skip the check for local commits in a heavy checkout
1882
:ivar revision_id: revision ID to switch to (or None)
1885
def __init__(self, control_dir, to_branch, force, revision_id):
1886
"""Create a group of SwitchHook parameters.
1888
:param control_dir: BzrDir of the checkout to change
1889
:param to_branch: branch that the checkout is to reference
1890
:param force: skip the check for local commits in a heavy checkout
1891
:param revision_id: revision ID to switch to (or None)
1893
self.control_dir = control_dir
1894
self.to_branch = to_branch
1896
self.revision_id = revision_id
1898
def __eq__(self, other):
1899
return self.__dict__ == other.__dict__
1902
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1903
self.control_dir, self.to_branch,
1907
953
class BzrBranchFormat4(BranchFormat):
1908
954
"""Bzr branch format 4.
1916
962
"""See BranchFormat.get_format_description()."""
1917
963
return "Branch format 4"
1919
def initialize(self, a_bzrdir, name=None):
965
def initialize(self, a_bzrdir):
1920
966
"""Create a branch of this format in a_bzrdir."""
1921
967
utf8_files = [('revision-history', ''),
1922
968
('branch-name', ''),
1924
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
970
return self._initialize_helper(a_bzrdir, utf8_files,
1925
971
lock_type='branch4', set_format=False)
1927
973
def __init__(self):
1928
974
super(BzrBranchFormat4, self).__init__()
1929
975
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1931
def network_name(self):
1932
"""The network name for this format is the control dirs disk label."""
1933
return self._matchingbzrdir.get_format_string()
977
def open(self, a_bzrdir, _found=False):
978
"""Return the branch object for a_bzrdir
1935
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1936
"""See BranchFormat.open()."""
980
_found is a private parameter, do not use it. It is used to indicate
981
if format probing has already be done.
1938
984
# we are being called directly and must probe.
1939
985
raise NotImplementedError
1940
986
return BzrBranch(_format=self,
1941
987
_control_files=a_bzrdir._control_files,
1942
988
a_bzrdir=a_bzrdir,
1944
989
_repository=a_bzrdir.open_repository())
1946
991
def __str__(self):
1947
992
return "Bazaar-NG branch format 4"
1950
class BranchFormatMetadir(BranchFormat):
1951
"""Common logic for meta-dir based branch formats."""
1953
def _branch_class(self):
1954
"""What class to instantiate on open calls."""
1955
raise NotImplementedError(self._branch_class)
1957
def network_name(self):
1958
"""A simple byte string uniquely identifying this format for RPC calls.
1960
Metadir branch formats use their format string.
1962
return self.get_format_string()
1964
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1965
"""See BranchFormat.open()."""
1967
format = BranchFormat.find_format(a_bzrdir, name=name)
1968
if format.__class__ != self.__class__:
1969
raise AssertionError("wrong format %r found for %r" %
1971
transport = a_bzrdir.get_branch_transport(None, name=name)
1973
control_files = lockable_files.LockableFiles(transport, 'lock',
1975
return self._branch_class()(_format=self,
1976
_control_files=control_files,
1979
_repository=a_bzrdir.find_repository(),
1980
ignore_fallbacks=ignore_fallbacks)
1981
except errors.NoSuchFile:
1982
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1985
super(BranchFormatMetadir, self).__init__()
1986
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1987
self._matchingbzrdir.set_branch_format(self)
1989
def supports_tags(self):
1993
class BzrBranchFormat5(BranchFormatMetadir):
995
class BzrBranchFormat5(BranchFormat):
1994
996
"""Bzr branch format 5.
1996
998
This format has:
2047
1060
"""See BranchFormat.get_format_description()."""
2048
1061
return "Branch format 6"
2050
def initialize(self, a_bzrdir, name=None):
2051
"""Create a branch of this format in a_bzrdir."""
2052
utf8_files = [('last-revision', '0 null:\n'),
2053
('branch.conf', ''),
2056
return self._initialize_helper(a_bzrdir, utf8_files, name)
2058
def make_tags(self, branch):
2059
"""See bzrlib.branch.BranchFormat.make_tags()."""
2060
return BasicTags(branch)
2062
def supports_set_append_revisions_only(self):
2066
class BzrBranchFormat8(BranchFormatMetadir):
2067
"""Metadir format supporting storing locations of subtree branches."""
2069
def _branch_class(self):
2072
def get_format_string(self):
2073
"""See BranchFormat.get_format_string()."""
2074
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2076
def get_format_description(self):
2077
"""See BranchFormat.get_format_description()."""
2078
return "Branch format 8"
2080
def initialize(self, a_bzrdir, name=None):
2081
"""Create a branch of this format in a_bzrdir."""
2082
utf8_files = [('last-revision', '0 null:\n'),
2083
('branch.conf', ''),
2087
return self._initialize_helper(a_bzrdir, utf8_files, name)
2090
super(BzrBranchFormat8, self).__init__()
2091
self._matchingbzrdir.repository_format = \
2092
RepositoryFormatKnitPack5RichRoot()
2094
def make_tags(self, branch):
2095
"""See bzrlib.branch.BranchFormat.make_tags()."""
2096
return BasicTags(branch)
2098
def supports_set_append_revisions_only(self):
2101
def supports_stacking(self):
2104
supports_reference_locations = True
2107
class BzrBranchFormat7(BzrBranchFormat8):
2108
"""Branch format with last-revision, tags, and a stacked location pointer.
2110
The stacked location pointer is passed down to the repository and requires
2111
a repository format with supports_external_lookups = True.
2113
This format was introduced in bzr 1.6.
2116
def initialize(self, a_bzrdir, name=None):
2117
"""Create a branch of this format in a_bzrdir."""
2118
utf8_files = [('last-revision', '0 null:\n'),
2119
('branch.conf', ''),
2122
return self._initialize_helper(a_bzrdir, utf8_files, name)
2124
def _branch_class(self):
2127
def get_format_string(self):
2128
"""See BranchFormat.get_format_string()."""
2129
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2131
def get_format_description(self):
2132
"""See BranchFormat.get_format_description()."""
2133
return "Branch format 7"
2135
def supports_set_append_revisions_only(self):
2138
supports_reference_locations = False
1063
def initialize(self, a_bzrdir):
1064
"""Create a branch of this format in a_bzrdir."""
1065
utf8_files = [('last-revision', '0 null:\n'),
1066
('branch-name', ''),
1067
('branch.conf', ''),
1070
return self._initialize_helper(a_bzrdir, utf8_files)
1072
def open(self, a_bzrdir, _found=False):
1073
"""Return the branch object for a_bzrdir
1075
_found is a private parameter, do not use it. It is used to indicate
1076
if format probing has already be done.
1079
format = BranchFormat.find_format(a_bzrdir)
1080
assert format.__class__ == self.__class__
1081
transport = a_bzrdir.get_branch_transport(None)
1082
control_files = lockable_files.LockableFiles(transport, 'lock',
1084
return BzrBranch6(_format=self,
1085
_control_files=control_files,
1087
_repository=a_bzrdir.find_repository())
1089
def supports_tags(self):
2141
1093
class BranchReferenceFormat(BranchFormat):
2156
1108
def get_format_description(self):
2157
1109
"""See BranchFormat.get_format_description()."""
2158
1110
return "Checkout reference format 1"
2160
def get_reference(self, a_bzrdir):
2161
"""See BranchFormat.get_reference()."""
2162
transport = a_bzrdir.get_branch_transport(None)
2163
return transport.get_bytes('location')
2165
def set_reference(self, a_bzrdir, to_branch):
2166
"""See BranchFormat.set_reference()."""
2167
transport = a_bzrdir.get_branch_transport(None)
2168
location = transport.put_bytes('location', to_branch.base)
2170
def initialize(self, a_bzrdir, name=None, target_branch=None):
1112
def initialize(self, a_bzrdir, target_branch=None):
2171
1113
"""Create a branch of this format in a_bzrdir."""
2172
1114
if target_branch is None:
2173
1115
# this format does not implement branch itself, thus the implicit
2174
1116
# creation contract must see it as uninitializable
2175
1117
raise errors.UninitializableFormat(self)
2176
mutter('creating branch reference in %s', a_bzrdir.user_url)
2177
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1118
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1119
branch_transport = a_bzrdir.get_branch_transport(self)
2178
1120
branch_transport.put_bytes('location',
2179
target_branch.bzrdir.user_url)
1121
target_branch.bzrdir.root_transport.base)
2180
1122
branch_transport.put_bytes('format', self.get_format_string())
2182
a_bzrdir, name, _found=True,
2183
possible_transports=[target_branch.bzrdir.root_transport])
2184
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1123
return self.open(a_bzrdir, _found=True)
2187
1125
def __init__(self):
2188
1126
super(BranchReferenceFormat, self).__init__()
2189
1127
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2190
self._matchingbzrdir.set_branch_format(self)
2192
1129
def _make_reference_clone_function(format, a_branch):
2193
1130
"""Create a clone() routine for a branch dynamically."""
2194
def clone(to_bzrdir, revision_id=None,
2195
repository_policy=None):
1131
def clone(to_bzrdir, revision_id=None):
2196
1132
"""See Branch.clone()."""
2197
return format.initialize(to_bzrdir, target_branch=a_branch)
1133
return format.initialize(to_bzrdir, a_branch)
2198
1134
# cannot obey revision_id limits when cloning a reference ...
2199
1135
# FIXME RBC 20060210 either nuke revision_id for clone, or
2200
1136
# emit some sort of warning/error to the caller ?!
2203
def open(self, a_bzrdir, name=None, _found=False, location=None,
2204
possible_transports=None, ignore_fallbacks=False):
1139
def open(self, a_bzrdir, _found=False):
2205
1140
"""Return the branch that the branch reference in a_bzrdir points at.
2207
:param a_bzrdir: A BzrDir that contains a branch.
2208
:param name: Name of colocated branch to open, if any
2209
:param _found: a private parameter, do not use it. It is used to
2210
indicate if format probing has already be done.
2211
:param ignore_fallbacks: when set, no fallback branches will be opened
2212
(if there are any). Default is to open fallbacks.
2213
:param location: The location of the referenced branch. If
2214
unspecified, this will be determined from the branch reference in
2216
:param possible_transports: An optional reusable transports list.
1142
_found is a private parameter, do not use it. It is used to indicate
1143
if format probing has already be done.
2219
format = BranchFormat.find_format(a_bzrdir, name=name)
2220
if format.__class__ != self.__class__:
2221
raise AssertionError("wrong format %r found for %r" %
2223
if location is None:
2224
location = self.get_reference(a_bzrdir)
2225
real_bzrdir = bzrdir.BzrDir.open(
2226
location, possible_transports=possible_transports)
2227
result = real_bzrdir.open_branch(name=name,
2228
ignore_fallbacks=ignore_fallbacks)
1146
format = BranchFormat.find_format(a_bzrdir)
1147
assert format.__class__ == self.__class__
1148
transport = a_bzrdir.get_branch_transport(None)
1149
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
1150
result = real_bzrdir.open_branch()
2229
1151
# this changes the behaviour of result.clone to create a new reference
2230
1152
# rather than a copy of the content of the branch.
2231
1153
# I did not use a proxy object because that needs much more extensive
2241
network_format_registry = registry.FormatRegistry()
2242
"""Registry of formats indexed by their network name.
2244
The network name for a branch format is an identifier that can be used when
2245
referring to formats with smart server operations. See
2246
BranchFormat.network_name() for more detail.
2250
1163
# formats which have no format string are not discoverable
2251
1164
# and not independently creatable, so are not registered.
2252
__format5 = BzrBranchFormat5()
2253
__format6 = BzrBranchFormat6()
2254
__format7 = BzrBranchFormat7()
2255
__format8 = BzrBranchFormat8()
2256
BranchFormat.register_format(__format5)
1165
__default_format = BzrBranchFormat5()
1166
BranchFormat.register_format(__default_format)
2257
1167
BranchFormat.register_format(BranchReferenceFormat())
2258
BranchFormat.register_format(__format6)
2259
BranchFormat.register_format(__format7)
2260
BranchFormat.register_format(__format8)
2261
BranchFormat.set_default_format(__format7)
1168
BranchFormat.register_format(BzrBranchFormat6())
1169
BranchFormat.set_default_format(__default_format)
2262
1170
_legacy_formats = [BzrBranchFormat4(),
2264
network_format_registry.register(
2265
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2268
class BzrBranch(Branch, _RelockDebugMixin):
1173
class BzrBranch(Branch):
2269
1174
"""A branch stored in the actual filesystem.
2271
1176
Note that it's "local" in the context of the filesystem; it doesn't
2272
1177
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2273
1178
it's writable, and can be accessed via the normal filesystem API.
2275
:ivar _transport: Transport for file operations on this branch's
2276
control files, typically pointing to the .bzr/branch directory.
2277
:ivar repository: Repository for this branch.
2278
:ivar base: The url of the base directory for this branch; the one
2279
containing the .bzr directory.
2280
:ivar name: Optional colocated branch name as it exists in the control
2284
1181
def __init__(self, _format=None,
2285
_control_files=None, a_bzrdir=None, name=None,
2286
_repository=None, ignore_fallbacks=False):
1182
_control_files=None, a_bzrdir=None, _repository=None):
2287
1183
"""Create new branch object at a particular location."""
1184
Branch.__init__(self)
2288
1185
if a_bzrdir is None:
2289
1186
raise ValueError('a_bzrdir must be supplied')
2291
1188
self.bzrdir = a_bzrdir
1189
# self._transport used to point to the directory containing the
1190
# control directory, but was not used - now it's just the transport
1191
# for the branch control files. mbp 20070212
2292
1192
self._base = self.bzrdir.transport.clone('..').base
2294
# XXX: We should be able to just do
2295
# self.base = self.bzrdir.root_transport.base
2296
# but this does not quite work yet -- mbp 20080522
2297
1193
self._format = _format
2298
1194
if _control_files is None:
2299
1195
raise ValueError('BzrBranch _control_files is None')
2300
1196
self.control_files = _control_files
2301
1197
self._transport = _control_files._transport
2302
1198
self.repository = _repository
2303
Branch.__init__(self)
2305
1200
def __str__(self):
2306
if self.name is None:
2307
return '%s(%s)' % (self.__class__.__name__, self.user_url)
2309
return '%s(%s,%s)' % (self.__class__.__name__, self.user_url,
1201
return '%s(%r)' % (self.__class__.__name__, self.base)
2312
1203
__repr__ = __str__
2387
1263
"""See Branch.print_file."""
2388
1264
return self.repository.print_file(file, revision_id)
1267
def append_revision(self, *revision_ids):
1268
"""See Branch.append_revision."""
1269
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1270
for revision_id in revision_ids:
1271
_mod_revision.check_not_reserved_id(revision_id)
1272
mutter("add {%s} to revision-history" % revision_id)
1273
rev_history = self.revision_history()
1274
rev_history.extend(revision_ids)
1275
self.set_revision_history(rev_history)
2390
1277
def _write_revision_history(self, history):
2391
1278
"""Factored out of set_revision_history.
2393
1280
This performs the actual writing to disk.
2394
1281
It is intended to be called by BzrBranch5.set_revision_history."""
2395
self._transport.put_bytes(
2396
'revision-history', '\n'.join(history),
2397
mode=self.bzrdir._get_file_mode())
1282
self.control_files.put_bytes(
1283
'revision-history', '\n'.join(history))
2399
1285
@needs_write_lock
2400
1286
def set_revision_history(self, rev_history):
2401
1287
"""See Branch.set_revision_history."""
2402
if 'evil' in debug.debug_flags:
2403
mutter_callsite(3, "set_revision_history scales with history.")
2404
check_not_reserved_id = _mod_revision.check_not_reserved_id
2405
for rev_id in rev_history:
2406
check_not_reserved_id(rev_id)
2407
if Branch.hooks['post_change_branch_tip']:
2408
# Don't calculate the last_revision_info() if there are no hooks
2410
old_revno, old_revid = self.last_revision_info()
2411
if len(rev_history) == 0:
2412
revid = _mod_revision.NULL_REVISION
2414
revid = rev_history[-1]
2415
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
1288
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
2416
1289
self._write_revision_history(rev_history)
2417
self._clear_cached_state()
2418
1290
self._cache_revision_history(rev_history)
2419
1291
for hook in Branch.hooks['set_rh']:
2420
1292
hook(self, rev_history)
2421
if Branch.hooks['post_change_branch_tip']:
2422
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2424
def _synchronize_history(self, destination, revision_id):
2425
"""Synchronize last revision and revision history between branches.
2427
This version is most efficient when the destination is also a
2428
BzrBranch5, but works for BzrBranch6 as long as the revision
2429
history is the true lefthand parent history, and all of the revisions
2430
are in the destination's repository. If not, set_revision_history
2433
:param destination: The branch to copy the history into
2434
:param revision_id: The revision-id to truncate history at. May
2435
be None to copy complete history.
2437
if not isinstance(destination._format, BzrBranchFormat5):
2438
super(BzrBranch, self)._synchronize_history(
2439
destination, revision_id)
2441
if revision_id == _mod_revision.NULL_REVISION:
2444
new_history = self.revision_history()
2445
if revision_id is not None and new_history != []:
2447
new_history = new_history[:new_history.index(revision_id) + 1]
2449
rev = self.repository.get_revision(revision_id)
2450
new_history = rev.get_history(self.repository)[1:]
2451
destination.set_revision_history(new_history)
2453
1294
@needs_write_lock
2454
1295
def set_last_revision_info(self, revno, revision_id):
2455
"""Set the last revision of this branch.
2457
The caller is responsible for checking that the revno is correct
2458
for this revision id.
2460
It may be possible to set the branch last revision to an id not
2461
present in the repository. However, branches can also be
2462
configured to check constraints on history, in which case this may not
2465
revision_id = _mod_revision.ensure_null(revision_id)
2466
# this old format stores the full history, but this api doesn't
2467
# provide it, so we must generate, and might as well check it's
1296
revision_id = osutils.safe_revision_id(revision_id)
2469
1297
history = self._lefthand_history(revision_id)
2470
if len(history) != revno:
2471
raise AssertionError('%d != %d' % (len(history), revno))
1298
assert len(history) == revno, '%d != %d' % (len(history), revno)
2472
1299
self.set_revision_history(history)
2474
1301
def _gen_revision_history(self):
2475
history = self._transport.get_bytes('revision-history').split('\n')
1302
history = self.control_files.get('revision-history').read().split('\n')
2476
1303
if history[-1:] == ['']:
2477
1304
# There shouldn't be a trailing newline, but just in case.
1308
def _lefthand_history(self, revision_id, last_rev=None,
1310
# stop_revision must be a descendant of last_revision
1311
stop_graph = self.repository.get_revision_graph(revision_id)
1312
if last_rev is not None and last_rev not in stop_graph:
1313
# our previous tip is not merged into stop_revision
1314
raise errors.DivergedBranches(self, other_branch)
1315
# make a new revision history from the graph
1316
current_rev_id = revision_id
1318
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1319
new_history.append(current_rev_id)
1320
current_rev_id_parents = stop_graph[current_rev_id]
1322
current_rev_id = current_rev_id_parents[0]
1324
current_rev_id = None
1325
new_history.reverse()
2481
1328
@needs_write_lock
2482
1329
def generate_revision_history(self, revision_id, last_rev=None,
2483
1330
other_branch=None):
2489
1336
:param other_branch: The other branch that DivergedBranches should
2490
1337
raise with respect to.
1339
revision_id = osutils.safe_revision_id(revision_id)
2492
1340
self.set_revision_history(self._lefthand_history(revision_id,
2493
1341
last_rev, other_branch))
1344
def update_revisions(self, other, stop_revision=None):
1345
"""See Branch.update_revisions."""
1348
if stop_revision is None:
1349
stop_revision = other.last_revision()
1350
if stop_revision is None:
1351
# if there are no commits, we're done.
1354
stop_revision = osutils.safe_revision_id(stop_revision)
1355
# whats the current last revision, before we fetch [and change it
1357
last_rev = self.last_revision()
1358
# we fetch here regardless of whether we need to so that we pickup
1360
self.fetch(other, stop_revision)
1361
my_ancestry = self.repository.get_ancestry(last_rev)
1362
if stop_revision in my_ancestry:
1363
# last_revision is a descendant of stop_revision
1365
self.generate_revision_history(stop_revision, last_rev=last_rev,
2495
1370
def basis_tree(self):
2496
1371
"""See Branch.basis_tree."""
2497
1372
return self.repository.revision_tree(self.last_revision())
1374
@deprecated_method(zero_eight)
1375
def working_tree(self):
1376
"""Create a Working tree object for this branch."""
1378
from bzrlib.transport.local import LocalTransport
1379
if (self.base.find('://') != -1 or
1380
not isinstance(self._transport, LocalTransport)):
1381
raise NoWorkingTree(self.base)
1382
return self.bzrdir.open_workingtree()
1385
def pull(self, source, overwrite=False, stop_revision=None,
1386
_hook_master=None, _run_hooks=True):
1389
:param _hook_master: Private parameter - set the branch to
1390
be supplied as the master to push hooks.
1391
:param _run_hooks: Private parameter - allow disabling of
1392
hooks, used when pushing to a master branch.
1394
result = PullResult()
1395
result.source_branch = source
1396
result.target_branch = self
1399
result.old_revno, result.old_revid = self.last_revision_info()
1401
self.update_revisions(source, stop_revision)
1402
except DivergedBranches:
1406
if stop_revision is None:
1407
stop_revision = source.last_revision()
1408
self.generate_revision_history(stop_revision)
1409
result.tag_conflicts = source.tags.merge_to(self.tags)
1410
result.new_revno, result.new_revid = self.last_revision_info()
1412
result.master_branch = _hook_master
1413
result.local_branch = self
1415
result.master_branch = self
1416
result.local_branch = None
1418
for hook in Branch.hooks['post_pull']:
2499
1424
def _get_parent_location(self):
2500
1425
_locs = ['parent', 'pull', 'x-pull']
2501
1426
for l in _locs:
2503
return self._transport.get_bytes(l).strip('\n')
2504
except errors.NoSuchFile:
1428
return self.control_files.get(l).read().strip('\n')
2508
def _basic_push(self, target, overwrite, stop_revision):
2509
"""Basic implementation of push without bound branches or hooks.
2511
Must be called with source read locked and target write locked.
1434
def push(self, target, overwrite=False, stop_revision=None,
1435
_hook_master=None, _run_hooks=True):
1438
:param _hook_master: Private parameter - set the branch to
1439
be supplied as the master to push hooks.
1440
:param _run_hooks: Private parameter - allow disabling of
1441
hooks, used when pushing to a master branch.
2513
result = BranchPushResult()
1443
result = PushResult()
2514
1444
result.source_branch = self
2515
1445
result.target_branch = target
2516
result.old_revno, result.old_revid = target.last_revision_info()
2517
self.update_references(target)
2518
if result.old_revid != self.last_revision():
2519
# We assume that during 'push' this repository is closer than
2521
graph = self.repository.get_graph(target.repository)
2522
target.update_revisions(self, stop_revision,
2523
overwrite=overwrite, graph=graph)
2524
if self._push_should_merge_tags():
2525
result.tag_conflicts = self.tags.merge_to(target.tags,
2527
result.new_revno, result.new_revid = target.last_revision_info()
1448
result.old_revno, result.old_revid = target.last_revision_info()
1450
target.update_revisions(self, stop_revision)
1451
except DivergedBranches:
1455
target.set_revision_history(self.revision_history())
1456
result.tag_conflicts = self.tags.merge_to(target.tags)
1457
result.new_revno, result.new_revid = target.last_revision_info()
1459
result.master_branch = _hook_master
1460
result.local_branch = target
1462
result.master_branch = target
1463
result.local_branch = None
1465
for hook in Branch.hooks['post_push']:
2530
def get_stacked_on_url(self):
2531
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1471
def get_parent(self):
1472
"""See Branch.get_parent."""
1474
assert self.base[-1] == '/'
1475
parent = self._get_parent_location()
1478
# This is an old-format absolute path to a local branch
1479
# turn it into a url
1480
if parent.startswith('/'):
1481
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1483
return urlutils.join(self.base[:-1], parent)
1484
except errors.InvalidURLJoin, e:
1485
raise errors.InaccessibleParent(parent, self.base)
1487
def get_push_location(self):
1488
"""See Branch.get_push_location."""
1489
push_loc = self.get_config().get_user_option('push_location')
2533
1492
def set_push_location(self, location):
2534
1493
"""See Branch.set_push_location."""
2536
1495
'push_location', location,
2537
1496
store=_mod_config.STORE_LOCATION_NORECURSE)
1499
def set_parent(self, url):
1500
"""See Branch.set_parent."""
1501
# TODO: Maybe delete old location files?
1502
# URLs should never be unicode, even on the local fs,
1503
# FIXUP this and get_parent in a future branch format bump:
1504
# read and rewrite the file, and have the new format code read
1505
# using .get not .get_utf8. RBC 20060125
1507
if isinstance(url, unicode):
1509
url = url.encode('ascii')
1510
except UnicodeEncodeError:
1511
raise bzrlib.errors.InvalidURL(url,
1512
"Urls must be 7-bit ascii, "
1513
"use bzrlib.urlutils.escape")
1514
url = urlutils.relative_url(self.base, url)
1515
self._set_parent_location(url)
2539
1517
def _set_parent_location(self, url):
2540
1518
if url is None:
2541
self._transport.delete('parent')
1519
self.control_files._transport.delete('parent')
2543
self._transport.put_bytes('parent', url + '\n',
2544
mode=self.bzrdir._get_file_mode())
1521
assert isinstance(url, str)
1522
self.control_files.put_bytes('parent', url + '\n')
1524
@deprecated_function(zero_nine)
1525
def tree_config(self):
1526
"""DEPRECATED; call get_config instead.
1527
TreeConfig has become part of BranchConfig."""
1528
return TreeConfig(self)
2547
1531
class BzrBranch5(BzrBranch):
2548
"""A format 5 branch. This supports new features over plain branches.
1532
"""A format 5 branch. This supports new features over plan branches.
2550
1534
It has support for a master_branch which is the data for bound branches.
1542
super(BzrBranch5, self).__init__(_format=_format,
1543
_control_files=_control_files,
1545
_repository=_repository)
1548
def pull(self, source, overwrite=False, stop_revision=None,
1550
"""Extends branch.pull to be bound branch aware.
1552
:param _run_hooks: Private parameter used to force hook running
1553
off during bound branch double-pushing.
1555
bound_location = self.get_bound_location()
1556
master_branch = None
1557
if bound_location and source.base != bound_location:
1558
# not pulling from master, so we need to update master.
1559
master_branch = self.get_master_branch()
1560
master_branch.lock_write()
1563
# pull from source into master.
1564
master_branch.pull(source, overwrite, stop_revision,
1566
return super(BzrBranch5, self).pull(source, overwrite,
1567
stop_revision, _hook_master=master_branch,
1568
_run_hooks=_run_hooks)
1571
master_branch.unlock()
1574
def push(self, target, overwrite=False, stop_revision=None):
1575
"""Updates branch.push to be bound branch aware."""
1576
bound_location = target.get_bound_location()
1577
master_branch = None
1578
if bound_location and target.base != bound_location:
1579
# not pushing to master, so we need to update master.
1580
master_branch = target.get_master_branch()
1581
master_branch.lock_write()
1584
# push into the master from this branch.
1585
super(BzrBranch5, self).push(master_branch, overwrite,
1586
stop_revision, _run_hooks=False)
1587
# and push into the target branch from this. Note that we push from
1588
# this branch again, because its considered the highest bandwidth
1590
return super(BzrBranch5, self).push(target, overwrite,
1591
stop_revision, _hook_master=master_branch)
1594
master_branch.unlock()
2553
1596
def get_bound_location(self):
2555
return self._transport.get_bytes('bound')[:-1]
1598
return self.control_files.get_utf8('bound').read()[:-1]
2556
1599
except errors.NoSuchFile:
2559
1602
@needs_read_lock
2560
def get_master_branch(self, possible_transports=None):
1603
def get_master_branch(self):
2561
1604
"""Return the branch we are bound to.
2563
1606
:return: Either a Branch, or None
2565
1608
This could memoise the branch, but if thats done
2625
1682
return self.set_bound_location(None)
2627
1684
@needs_write_lock
2628
def update(self, possible_transports=None):
2629
"""Synchronise this branch with the master branch if any.
1686
"""Synchronise this branch with the master branch if any.
2631
1688
:return: None or the last_revision that was pivoted out during the
2634
master = self.get_master_branch(possible_transports)
1691
master = self.get_master_branch()
2635
1692
if master is not None:
2636
old_tip = _mod_revision.ensure_null(self.last_revision())
1693
old_tip = self.last_revision()
2637
1694
self.pull(master, overwrite=True)
2638
if self.repository.get_graph().is_ancestor(old_tip,
2639
_mod_revision.ensure_null(self.last_revision())):
1695
if old_tip in self.repository.get_ancestry(self.last_revision()):
2645
class BzrBranch8(BzrBranch5):
2646
"""A branch that stores tree-reference locations."""
2648
def _open_hook(self):
2649
if self._ignore_fallbacks:
1701
class BzrBranchExperimental(BzrBranch5):
1702
"""Bzr experimental branch format
1705
- a revision-history file.
1707
- a lock dir guarding the branch itself
1708
- all of this stored in a branch/ subdirectory
1709
- works with shared repositories.
1710
- a tag dictionary in the branch
1712
This format is new in bzr 0.15, but shouldn't be used for real data,
1715
This class acts as it's own BranchFormat.
1718
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1721
def get_format_string(cls):
1722
"""See BranchFormat.get_format_string()."""
1723
return "Bazaar-NG branch format experimental\n"
1726
def get_format_description(cls):
1727
"""See BranchFormat.get_format_description()."""
1728
return "Experimental branch format"
1731
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1733
branch_transport = a_bzrdir.get_branch_transport(cls)
1734
control_files = lockable_files.LockableFiles(branch_transport,
1735
lock_filename, lock_class)
1736
control_files.create_lock()
1737
control_files.lock_write()
2652
url = self.get_stacked_on_url()
2653
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2654
errors.UnstackableBranchFormat):
2657
for hook in Branch.hooks['transform_fallback_location']:
2658
url = hook(self, url)
2660
hook_name = Branch.hooks.get_hook_name(hook)
2661
raise AssertionError(
2662
"'transform_fallback_location' hook %s returned "
2663
"None, not a URL." % hook_name)
2664
self._activate_fallback_location(url)
2666
def __init__(self, *args, **kwargs):
2667
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2668
super(BzrBranch8, self).__init__(*args, **kwargs)
2669
self._last_revision_info_cache = None
2670
self._reference_info = None
2672
def _clear_cached_state(self):
2673
super(BzrBranch8, self)._clear_cached_state()
2674
self._last_revision_info_cache = None
2675
self._reference_info = None
2677
def _last_revision_info(self):
2678
revision_string = self._transport.get_bytes('last-revision')
1739
for filename, content in utf8_files:
1740
control_files.put_utf8(filename, content)
1742
control_files.unlock()
1745
def initialize(cls, a_bzrdir):
1746
"""Create a branch of this format in a_bzrdir."""
1747
utf8_files = [('format', cls.get_format_string()),
1748
('revision-history', ''),
1749
('branch-name', ''),
1752
cls._initialize_control_files(a_bzrdir, utf8_files,
1753
'lock', lockdir.LockDir)
1754
return cls.open(a_bzrdir, _found=True)
1757
def open(cls, a_bzrdir, _found=False):
1758
"""Return the branch object for a_bzrdir
1760
_found is a private parameter, do not use it. It is used to indicate
1761
if format probing has already be done.
1764
format = BranchFormat.find_format(a_bzrdir)
1765
assert format.__class__ == cls
1766
transport = a_bzrdir.get_branch_transport(None)
1767
control_files = lockable_files.LockableFiles(transport, 'lock',
1769
return cls(_format=cls,
1770
_control_files=control_files,
1772
_repository=a_bzrdir.find_repository())
1775
def is_supported(cls):
1778
def _make_tags(self):
1779
return BasicTags(self)
1782
def supports_tags(cls):
1786
BranchFormat.register_format(BzrBranchExperimental)
1789
class BzrBranch6(BzrBranch5):
1792
def last_revision_info(self):
1793
revision_string = self.control_files.get('last-revision').read()
2679
1794
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2680
1795
revision_id = cache_utf8.get_cached_utf8(revision_id)
2681
1796
revno = int(revno)
2682
1797
return revno, revision_id
1799
def last_revision(self):
1800
"""Return last revision id, or None"""
1801
revision_id = self.last_revision_info()[1]
1802
if revision_id == _mod_revision.NULL_REVISION:
2684
1806
def _write_last_revision_info(self, revno, revision_id):
2685
1807
"""Simply write out the revision id, with no checks.
2690
1812
Intended to be called by set_last_revision_info and
2691
1813
_write_revision_history.
2693
revision_id = _mod_revision.ensure_null(revision_id)
1815
if revision_id is None:
1816
revision_id = 'null:'
2694
1817
out_string = '%d %s\n' % (revno, revision_id)
2695
self._transport.put_bytes('last-revision', out_string,
2696
mode=self.bzrdir._get_file_mode())
1818
self.control_files.put_bytes('last-revision', out_string)
2698
1820
@needs_write_lock
2699
1821
def set_last_revision_info(self, revno, revision_id):
2700
revision_id = _mod_revision.ensure_null(revision_id)
2701
old_revno, old_revid = self.last_revision_info()
1822
revision_id = osutils.safe_revision_id(revision_id)
2702
1823
if self._get_append_revisions_only():
2703
1824
self._check_history_violation(revision_id)
2704
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2705
1825
self._write_last_revision_info(revno, revision_id)
2706
1826
self._clear_cached_state()
2707
self._last_revision_info_cache = revno, revision_id
2708
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2710
def _synchronize_history(self, destination, revision_id):
2711
"""Synchronize last revision and revision history between branches.
2713
:see: Branch._synchronize_history
2715
# XXX: The base Branch has a fast implementation of this method based
2716
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2717
# that uses set_revision_history. This class inherits from BzrBranch5,
2718
# but wants the fast implementation, so it calls
2719
# Branch._synchronize_history directly.
2720
Branch._synchronize_history(self, destination, revision_id)
2722
1828
def _check_history_violation(self, revision_id):
2723
last_revision = _mod_revision.ensure_null(self.last_revision())
2724
if _mod_revision.is_null(last_revision):
1829
last_revision = self.last_revision()
1830
if last_revision is None:
2726
1832
if last_revision not in self._lefthand_history(revision_id):
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1833
raise errors.AppendRevisionsOnlyViolation(self.base)
2729
1835
def _gen_revision_history(self):
2730
1836
"""Generate the revision history from last revision
2732
last_revno, last_revision = self.last_revision_info()
2733
self._extend_partial_history(stop_index=last_revno-1)
2734
return list(reversed(self._partial_revision_history_cache))
1838
history = list(self.repository.iter_reverse_revision_history(
1839
self.last_revision()))
2736
1843
def _write_revision_history(self, history):
2737
1844
"""Factored out of set_revision_history.
2759
1885
"""Set the parent branch"""
2760
1886
return self._get_config_location('parent_location')
2763
def _set_all_reference_info(self, info_dict):
2764
"""Replace all reference info stored in a branch.
2766
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2769
writer = rio.RioWriter(s)
2770
for key, (tree_path, branch_location) in info_dict.iteritems():
2771
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2772
branch_location=branch_location)
2773
writer.write_stanza(stanza)
2774
self._transport.put_bytes('references', s.getvalue())
2775
self._reference_info = info_dict
2778
def _get_all_reference_info(self):
2779
"""Return all the reference info stored in a branch.
2781
:return: A dict of {file_id: (tree_path, branch_location)}
2783
if self._reference_info is not None:
2784
return self._reference_info
2785
rio_file = self._transport.get('references')
2787
stanzas = rio.read_stanzas(rio_file)
2788
info_dict = dict((s['file_id'], (s['tree_path'],
2789
s['branch_location'])) for s in stanzas)
2792
self._reference_info = info_dict
2795
def set_reference_info(self, file_id, tree_path, branch_location):
2796
"""Set the branch location to use for a tree reference.
2798
:param file_id: The file-id of the tree reference.
2799
:param tree_path: The path of the tree reference in the tree.
2800
:param branch_location: The location of the branch to retrieve tree
2803
info_dict = self._get_all_reference_info()
2804
info_dict[file_id] = (tree_path, branch_location)
2805
if None in (tree_path, branch_location):
2806
if tree_path is not None:
2807
raise ValueError('tree_path must be None when branch_location'
2809
if branch_location is not None:
2810
raise ValueError('branch_location must be None when tree_path'
2812
del info_dict[file_id]
2813
self._set_all_reference_info(info_dict)
2815
def get_reference_info(self, file_id):
2816
"""Get the tree_path and branch_location for a tree reference.
2818
:return: a tuple of (tree_path, branch_location)
2820
return self._get_all_reference_info().get(file_id, (None, None))
2822
def reference_parent(self, file_id, path, possible_transports=None):
2823
"""Return the parent branch for a tree-reference file_id.
2825
:param file_id: The file_id of the tree reference
2826
:param path: The path of the file_id in the tree
2827
:return: A branch associated with the file_id
2829
branch_location = self.get_reference_info(file_id)[1]
2830
if branch_location is None:
2831
return Branch.reference_parent(self, file_id, path,
2832
possible_transports)
2833
branch_location = urlutils.join(self.user_url, branch_location)
2834
return Branch.open(branch_location,
2835
possible_transports=possible_transports)
2837
1888
def set_push_location(self, location):
2838
1889
"""See Branch.set_push_location."""
2839
1890
self._set_config_location('push_location', location)
2872
1923
"""See Branch.get_old_bound_location"""
2873
1924
return self._get_bound_location(False)
2875
def get_stacked_on_url(self):
2876
# you can always ask for the URL; but you might not be able to use it
2877
# if the repo can't support stacking.
2878
## self._check_stackable_repo()
2879
stacked_url = self._get_config_location('stacked_on_location')
2880
if stacked_url is None:
2881
raise errors.NotStacked(self)
1926
def set_append_revisions_only(self, enabled):
1931
self.get_config().set_user_option('append_revisions_only', value)
2884
1933
def _get_append_revisions_only(self):
2885
return self.get_config(
2886
).get_user_option_as_bool('append_revisions_only')
2889
def generate_revision_history(self, revision_id, last_rev=None,
2891
"""See BzrBranch5.generate_revision_history"""
2892
history = self._lefthand_history(revision_id, last_rev, other_branch)
2893
revno = len(history)
2894
self.set_last_revision_info(revno, revision_id)
2897
def get_rev_id(self, revno, history=None):
2898
"""Find the revision id of the specified revno."""
2900
return _mod_revision.NULL_REVISION
2902
last_revno, last_revision_id = self.last_revision_info()
2903
if revno <= 0 or revno > last_revno:
2904
raise errors.NoSuchRevision(self, revno)
2906
if history is not None:
2907
return history[revno - 1]
2909
index = last_revno - revno
2910
if len(self._partial_revision_history_cache) <= index:
2911
self._extend_partial_history(stop_index=index)
2912
if len(self._partial_revision_history_cache) > index:
2913
return self._partial_revision_history_cache[index]
1934
value = self.get_config().get_user_option('append_revisions_only')
1935
return value == 'True'
1937
def _synchronize_history(self, destination, revision_id):
1938
"""Synchronize last revision and revision history between branches.
1940
This version is most efficient when the destination is also a
1941
BzrBranch6, but works for BzrBranch5, as long as the destination's
1942
repository contains all the lefthand ancestors of the intended
1943
last_revision. If not, set_last_revision_info will fail.
1945
:param destination: The branch to copy the history into
1946
:param revision_id: The revision-id to truncate history at. May
1947
be None to copy complete history.
1949
if revision_id is None:
1950
revno, revision_id = self.last_revision_info()
2915
raise errors.NoSuchRevision(self, revno)
2918
def revision_id_to_revno(self, revision_id):
2919
"""Given a revision id, return its revno"""
2920
if _mod_revision.is_null(revision_id):
2923
index = self._partial_revision_history_cache.index(revision_id)
2925
self._extend_partial_history(stop_revision=revision_id)
2926
index = len(self._partial_revision_history_cache) - 1
2927
if self._partial_revision_history_cache[index] != revision_id:
2928
raise errors.NoSuchRevision(self, revision_id)
2929
return self.revno() - index
2932
class BzrBranch7(BzrBranch8):
2933
"""A branch with support for a fallback repository."""
2935
def set_reference_info(self, file_id, tree_path, branch_location):
2936
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2938
def get_reference_info(self, file_id):
2939
Branch.get_reference_info(self, file_id)
2941
def reference_parent(self, file_id, path, possible_transports=None):
2942
return Branch.reference_parent(self, file_id, path,
2943
possible_transports)
2946
class BzrBranch6(BzrBranch7):
2947
"""See BzrBranchFormat6 for the capabilities of this branch.
2949
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
1952
revno = self.revision_id_to_revno(revision_id)
1953
destination.set_last_revision_info(revno, revision_id)
1955
def _make_tags(self):
1956
return BasicTags(self)
1959
class BranchTestProviderAdapter(object):
1960
"""A tool to generate a suite testing multiple branch formats at once.
1962
This is done by copying the test once for each transport and injecting
1963
the transport_server, transport_readonly_server, and branch_format
1964
classes into each copy. Each copy is also given a new id() to make it
2953
def get_stacked_on_url(self):
2954
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1968
def __init__(self, transport_server, transport_readonly_server, formats):
1969
self._transport_server = transport_server
1970
self._transport_readonly_server = transport_readonly_server
1971
self._formats = formats
1973
def adapt(self, test):
1974
result = TestSuite()
1975
for branch_format, bzrdir_format in self._formats:
1976
new_test = deepcopy(test)
1977
new_test.transport_server = self._transport_server
1978
new_test.transport_readonly_server = self._transport_readonly_server
1979
new_test.bzrdir_format = bzrdir_format
1980
new_test.branch_format = branch_format
1981
def make_new_test_id():
1982
# the format can be either a class or an instance
1983
name = getattr(branch_format, '__name__',
1984
branch_format.__class__.__name__)
1985
new_id = "%s(%s)" % (new_test.id(), name)
1986
return lambda: new_id
1987
new_test.id = make_new_test_id()
1988
result.addTest(new_test)
2957
1992
######################################################################
3068
2090
new_branch.tags._set_tag_dict({})
3070
2092
# Copying done; now update target format
3071
new_branch._transport.put_bytes('format',
3072
format.get_format_string(),
3073
mode=new_branch.bzrdir._get_file_mode())
2093
new_branch.control_files.put_utf8('format',
2094
format.get_format_string())
3075
2096
# Clean up old files
3076
new_branch._transport.delete('revision-history')
2097
new_branch.control_files._transport.delete('revision-history')
3078
2099
branch.set_parent(None)
3079
except errors.NoSuchFile:
3081
2102
branch.set_bound_location(None)
3084
class Converter6to7(object):
3085
"""Perform an in-place upgrade of format 6 to format 7"""
3087
def convert(self, branch):
3088
format = BzrBranchFormat7()
3089
branch._set_config_location('stacked_on_location', '')
3090
# update target format
3091
branch._transport.put_bytes('format', format.get_format_string())
3094
class Converter7to8(object):
3095
"""Perform an in-place upgrade of format 6 to format 7"""
3097
def convert(self, branch):
3098
format = BzrBranchFormat8()
3099
branch._transport.put_bytes('references', '')
3100
# update target format
3101
branch._transport.put_bytes('format', format.get_format_string())
3104
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3105
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3108
_run_with_write_locked_target will attempt to release the lock it acquires.
3110
If an exception is raised by callable, then that exception *will* be
3111
propagated, even if the unlock attempt raises its own error. Thus
3112
_run_with_write_locked_target should be preferred to simply doing::
3116
return callable(*args, **kwargs)
3121
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3122
# should share code?
3125
result = callable(*args, **kwargs)
3127
exc_info = sys.exc_info()
3131
raise exc_info[0], exc_info[1], exc_info[2]
3137
class InterBranch(InterObject):
3138
"""This class represents operations taking place between two branches.
3140
Its instances have methods like pull() and push() and contain
3141
references to the source and target repositories these operations
3142
can be carried out on.
3146
"""The available optimised InterBranch types."""
3149
def _get_branch_formats_to_test():
3150
"""Return a tuple with the Branch formats to use when testing."""
3151
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3153
def pull(self, overwrite=False, stop_revision=None,
3154
possible_transports=None, local=False):
3155
"""Mirror source into target branch.
3157
The target branch is considered to be 'local', having low latency.
3159
:returns: PullResult instance
3161
raise NotImplementedError(self.pull)
3163
def update_revisions(self, stop_revision=None, overwrite=False,
3165
"""Pull in new perfect-fit revisions.
3167
:param stop_revision: Updated until the given revision
3168
:param overwrite: Always set the branch pointer, rather than checking
3169
to see if it is a proper descendant.
3170
:param graph: A Graph object that can be used to query history
3171
information. This can be None.
3174
raise NotImplementedError(self.update_revisions)
3176
def push(self, overwrite=False, stop_revision=None,
3177
_override_hook_source_branch=None):
3178
"""Mirror the source branch into the target branch.
3180
The source branch is considered to be 'local', having low latency.
3182
raise NotImplementedError(self.push)
3185
class GenericInterBranch(InterBranch):
3186
"""InterBranch implementation that uses public Branch functions.
3190
def _get_branch_formats_to_test():
3191
return BranchFormat._default_format, BranchFormat._default_format
3193
def update_revisions(self, stop_revision=None, overwrite=False,
3195
"""See InterBranch.update_revisions()."""
3196
self.source.lock_read()
3198
other_revno, other_last_revision = self.source.last_revision_info()
3199
stop_revno = None # unknown
3200
if stop_revision is None:
3201
stop_revision = other_last_revision
3202
if _mod_revision.is_null(stop_revision):
3203
# if there are no commits, we're done.
3205
stop_revno = other_revno
3207
# what's the current last revision, before we fetch [and change it
3209
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3210
# we fetch here so that we don't process data twice in the common
3211
# case of having something to pull, and so that the check for
3212
# already merged can operate on the just fetched graph, which will
3213
# be cached in memory.
3214
self.target.fetch(self.source, stop_revision)
3215
# Check to see if one is an ancestor of the other
3218
graph = self.target.repository.get_graph()
3219
if self.target._check_if_descendant_or_diverged(
3220
stop_revision, last_rev, graph, self.source):
3221
# stop_revision is a descendant of last_rev, but we aren't
3222
# overwriting, so we're done.
3224
if stop_revno is None:
3226
graph = self.target.repository.get_graph()
3227
this_revno, this_last_revision = \
3228
self.target.last_revision_info()
3229
stop_revno = graph.find_distance_to_null(stop_revision,
3230
[(other_last_revision, other_revno),
3231
(this_last_revision, this_revno)])
3232
self.target.set_last_revision_info(stop_revno, stop_revision)
3234
self.source.unlock()
3236
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3238
_override_hook_target=None, local=False):
3241
:param _hook_master: Private parameter - set the branch to
3242
be supplied as the master to pull hooks.
3243
:param run_hooks: Private parameter - if false, this branch
3244
is being called because it's the master of the primary branch,
3245
so it should not run its hooks.
3246
:param _override_hook_target: Private parameter - set the branch to be
3247
supplied as the target_branch to pull hooks.
3248
:param local: Only update the local branch, and not the bound branch.
3250
# This type of branch can't be bound.
3252
raise errors.LocalRequiresBoundBranch()
3253
result = PullResult()
3254
result.source_branch = self.source
3255
if _override_hook_target is None:
3256
result.target_branch = self.target
3258
result.target_branch = _override_hook_target
3259
self.source.lock_read()
3261
# We assume that during 'pull' the target repository is closer than
3263
self.source.update_references(self.target)
3264
graph = self.target.repository.get_graph(self.source.repository)
3265
# TODO: Branch formats should have a flag that indicates
3266
# that revno's are expensive, and pull() should honor that flag.
3268
result.old_revno, result.old_revid = \
3269
self.target.last_revision_info()
3270
self.target.update_revisions(self.source, stop_revision,
3271
overwrite=overwrite, graph=graph)
3272
# TODO: The old revid should be specified when merging tags,
3273
# so a tags implementation that versions tags can only
3274
# pull in the most recent changes. -- JRV20090506
3275
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3277
result.new_revno, result.new_revid = self.target.last_revision_info()
3279
result.master_branch = _hook_master
3280
result.local_branch = result.target_branch
3282
result.master_branch = result.target_branch
3283
result.local_branch = None
3285
for hook in Branch.hooks['post_pull']:
3288
self.source.unlock()
3291
def push(self, overwrite=False, stop_revision=None,
3292
_override_hook_source_branch=None):
3293
"""See InterBranch.push.
3295
This is the basic concrete implementation of push()
3297
:param _override_hook_source_branch: If specified, run
3298
the hooks passing this Branch as the source, rather than self.
3299
This is for use of RemoteBranch, where push is delegated to the
3300
underlying vfs-based Branch.
3302
# TODO: Public option to disable running hooks - should be trivial but
3304
self.source.lock_read()
3306
return _run_with_write_locked_target(
3307
self.target, self._push_with_bound_branches, overwrite,
3309
_override_hook_source_branch=_override_hook_source_branch)
3311
self.source.unlock()
3313
def _push_with_bound_branches(self, overwrite, stop_revision,
3314
_override_hook_source_branch=None):
3315
"""Push from source into target, and into target's master if any.
3318
if _override_hook_source_branch:
3319
result.source_branch = _override_hook_source_branch
3320
for hook in Branch.hooks['post_push']:
3323
bound_location = self.target.get_bound_location()
3324
if bound_location and self.target.base != bound_location:
3325
# there is a master branch.
3327
# XXX: Why the second check? Is it even supported for a branch to
3328
# be bound to itself? -- mbp 20070507
3329
master_branch = self.target.get_master_branch()
3330
master_branch.lock_write()
3332
# push into the master from the source branch.
3333
self.source._basic_push(master_branch, overwrite, stop_revision)
3334
# and push into the target branch from the source. Note that we
3335
# push from the source branch again, because its considered the
3336
# highest bandwidth repository.
3337
result = self.source._basic_push(self.target, overwrite,
3339
result.master_branch = master_branch
3340
result.local_branch = self.target
3344
master_branch.unlock()
3347
result = self.source._basic_push(self.target, overwrite,
3349
# TODO: Why set master_branch and local_branch if there's no
3350
# binding? Maybe cleaner to just leave them unset? -- mbp
3352
result.master_branch = self.target
3353
result.local_branch = None
3358
def is_compatible(self, source, target):
3359
# GenericBranch uses the public API, so always compatible
3363
class InterToBranch5(GenericInterBranch):
3366
def _get_branch_formats_to_test():
3367
return BranchFormat._default_format, BzrBranchFormat5()
3369
def pull(self, overwrite=False, stop_revision=None,
3370
possible_transports=None, run_hooks=True,
3371
_override_hook_target=None, local=False):
3372
"""Pull from source into self, updating my master if any.
3374
:param run_hooks: Private parameter - if false, this branch
3375
is being called because it's the master of the primary branch,
3376
so it should not run its hooks.
3378
bound_location = self.target.get_bound_location()
3379
if local and not bound_location:
3380
raise errors.LocalRequiresBoundBranch()
3381
master_branch = None
3382
if not local and bound_location and self.source.user_url != bound_location:
3383
# not pulling from master, so we need to update master.
3384
master_branch = self.target.get_master_branch(possible_transports)
3385
master_branch.lock_write()
3388
# pull from source into master.
3389
master_branch.pull(self.source, overwrite, stop_revision,
3391
return super(InterToBranch5, self).pull(overwrite,
3392
stop_revision, _hook_master=master_branch,
3393
run_hooks=run_hooks,
3394
_override_hook_target=_override_hook_target)
3397
master_branch.unlock()
3400
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
