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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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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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:return: A dictionary mapping revision_id => dotted revno.
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last_revision = self.last_revision()
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revision_graph = self.repository.get_revision_graph(last_revision)
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merge_sorted_revisions = tsort.merge_sort(
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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for seq_num, rev_id, depth, revno, end_of_merge
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in merge_sorted_revisions)
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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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.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
456
# 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))
464
raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
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"""Iterate over an inclusive range of sorted revisions."""
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rev_iter = iter(merge_sorted_revisions)
470
if start_revision_id is not None:
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for node in rev_iter:
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rev_id = node.key[-1]
473
if rev_id != start_revision_id:
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# The decision to include the start or not
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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)
481
if stop_revision_id is None:
483
for node in rev_iter:
484
rev_id = node.key[-1]
485
yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'exclude':
488
for node in rev_iter:
489
rev_id = node.key[-1]
490
if rev_id == stop_revision_id:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'include':
495
for node in rev_iter:
496
rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
499
if rev_id == stop_revision_id:
501
elif stop_rule == 'with-merges-without-common-ancestry':
502
# We want to exclude all revisions that are already part of the
503
# stop_revision_id ancestry.
504
graph = self.repository.get_graph()
505
ancestors = graph.find_unique_ancestors(start_revision_id,
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for node in rev_iter:
508
rev_id = node.key[-1]
509
if rev_id not in ancestors:
511
yield (rev_id, node.merge_depth, node.revno,
513
elif stop_rule == 'with-merges':
514
stop_rev = self.repository.get_revision(stop_revision_id)
515
if stop_rev.parent_ids:
516
left_parent = stop_rev.parent_ids[0]
518
left_parent = _mod_revision.NULL_REVISION
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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
521
reached_stop_revision_id = False
522
revision_id_whitelist = []
523
for node in rev_iter:
524
rev_id = node.key[-1]
525
if rev_id == left_parent:
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# reached the left parent after the stop_revision
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if (not reached_stop_revision_id or
529
rev_id in revision_id_whitelist):
530
yield (rev_id, node.merge_depth, node.revno,
532
if reached_stop_revision_id or rev_id == stop_revision_id:
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# 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
242
def leave_lock_in_place(self):
587
243
"""Tell this branch object not to release the physical lock when this
588
244
object is unlocked.
590
246
If lock_write doesn't return a token, then this method is not supported.
592
248
self.control_files.leave_in_place()
698
352
The delta is relative to its mainline predecessor, or the
699
353
empty tree for revision 1.
355
assert isinstance(revno, int)
701
356
rh = self.revision_history()
702
357
if not (1 <= revno <= len(rh)):
703
raise errors.InvalidRevisionNumber(revno)
358
raise InvalidRevisionNumber(revno)
704
359
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.
361
@deprecated_method(zero_sixteen)
362
def get_root_id(self):
363
"""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
365
Deprecated: branches don't have root ids-- trees do.
366
Use basis_tree().get_root_id() instead.
713
raise NotImplementedError(self.get_stacked_on_url)
368
raise NotImplementedError(self.get_root_id)
715
370
def print_file(self, file, revision_id):
716
371
"""Print `file` to stdout."""
717
372
raise NotImplementedError(self.print_file)
374
def append_revision(self, *revision_ids):
375
raise NotImplementedError(self.append_revision)
719
377
def set_revision_history(self, rev_history):
720
378
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
380
def _cache_revision_history(self, rev_history):
832
381
"""Set the cached revision history to rev_history.
942
486
common_index = min(self_len, other_len) -1
943
487
if common_index >= 0 and \
944
488
self_history[common_index] != other_history[common_index]:
945
raise errors.DivergedBranches(self, other)
489
raise DivergedBranches(self, other)
947
491
if stop_revision is None:
948
492
stop_revision = other_len
494
assert isinstance(stop_revision, int)
950
495
if stop_revision > other_len:
951
496
raise errors.NoSuchRevision(self, stop_revision)
952
497
return other_history[self_len:stop_revision]
955
def update_revisions(self, other, stop_revision=None, overwrite=False,
499
def update_revisions(self, other, stop_revision=None):
957
500
"""Pull in new perfect-fit revisions.
959
502
:param other: Another Branch to pull from
960
503
: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)
506
raise NotImplementedError(self.update_revisions)
984
508
def revision_id_to_revno(self, revision_id):
985
509
"""Given a revision id, return its revno"""
986
if _mod_revision.is_null(revision_id):
510
if revision_id is None:
512
revision_id = osutils.safe_revision_id(revision_id)
988
513
history = self.revision_history()
990
515
return history.index(revision_id) + 1
991
516
except ValueError:
992
517
raise errors.NoSuchRevision(self, revision_id)
995
519
def get_rev_id(self, revno, history=None):
996
520
"""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:
524
history = self.revision_history()
525
if revno <= 0 or revno > len(history):
1003
526
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]
527
return history[revno - 1]
1010
def pull(self, source, overwrite=False, stop_revision=None,
1011
possible_transports=None, *args, **kwargs):
529
def pull(self, source, overwrite=False, stop_revision=None):
1012
530
"""Mirror source into this branch.
1014
532
This branch is considered to be 'local', having low latency.
1016
534
:returns: PullResult instance
1018
return InterBranch.get(source, self).pull(overwrite=overwrite,
1019
stop_revision=stop_revision,
1020
possible_transports=possible_transports, *args, **kwargs)
536
raise NotImplementedError(self.pull)
1022
def push(self, target, overwrite=False, stop_revision=None, *args,
538
def push(self, target, overwrite=False, stop_revision=None):
1024
539
"""Mirror this branch into target.
1026
541
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)
543
raise NotImplementedError(self.push)
1052
545
def basis_tree(self):
1053
546
"""Return `Tree` object for last revision."""
1054
547
return self.repository.revision_tree(self.last_revision())
549
def rename_one(self, from_rel, to_rel):
552
This can change the directory or the filename or both.
554
raise NotImplementedError(self.rename_one)
556
def move(self, from_paths, to_name):
559
to_name must exist as a versioned directory.
561
If to_name exists and is a directory, the files are moved into
562
it, keeping their old names. If it is a directory,
564
Note that to_name is only the last component of the new name;
565
this doesn't change the directory.
567
This returns a list of (from_path, to_path) pairs for each
570
raise NotImplementedError(self.move)
1056
572
def get_parent(self):
1057
573
"""Return the parent location of the branch.
1059
This is the default location for pull/missing. The usual
575
This is the default location for push/pull/missing. The usual
1060
576
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)
579
raise NotImplementedError(self.get_parent)
1078
581
def _set_config_location(self, name, url, config=None,
1079
582
make_relative=False):
1180
659
self.check_real_revno(revno)
1182
661
def check_real_revno(self, revno):
1184
663
Check whether a revno corresponds to a real revision.
1185
664
Zero (the NULL revision) is considered invalid
1187
666
if revno < 1 or revno > self.revno():
1188
raise errors.InvalidRevisionNumber(revno)
667
raise InvalidRevisionNumber(revno)
1190
669
@needs_read_lock
1191
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
670
def clone(self, to_bzrdir, revision_id=None):
1192
671
"""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
673
revision_id: if not None, the revision history in the new branch will
1198
674
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)
676
result = self._format.initialize(to_bzrdir)
677
self.copy_content_into(result, revision_id=revision_id)
1210
680
@needs_read_lock
1211
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
681
def sprout(self, to_bzrdir, revision_id=None):
1212
682
"""Create a new line of development from the branch, into to_bzrdir.
1214
to_bzrdir controls the branch format.
1216
684
revision_id: if not None, the revision history in the new branch will
1217
685
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)
687
result = self._format.initialize(to_bzrdir)
688
self.copy_content_into(result, revision_id=revision_id)
689
result.set_parent(self.bzrdir.root_transport.base)
1233
692
def _synchronize_history(self, destination, revision_id):
1234
693
"""Synchronize last revision and revision history between branches.
1236
695
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.
696
BzrBranch5, but works for BzrBranch6 as long as the revision
697
history is the true lefthand parent history, and all of the revisions
698
are in the destination's repository. If not, set_revision_history
1241
701
:param destination: The branch to copy the history into
1242
702
:param revision_id: The revision-id to truncate history at. May
1243
703
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()
705
new_history = self.revision_history()
706
if revision_id is not None:
707
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)
709
new_history = new_history[:new_history.index(revision_id) + 1]
711
rev = self.repository.get_revision(revision_id)
712
new_history = rev.get_history(self.repository)[1:]
713
destination.set_revision_history(new_history)
1258
715
@needs_read_lock
1259
716
def copy_content_into(self, destination, revision_id=None):
1273
729
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)
730
self.tags.merge_to(destination.tags)
1294
732
@needs_read_lock
1295
def check(self, refs):
1296
734
"""Check consistency of the branch.
1298
736
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
737
do actually match up in the revision graph, and that they're all
1300
738
present in the repository.
1302
740
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
742
: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
744
mainline_parent_id = None
745
for revision_id in self.revision_history():
747
revision = self.repository.get_revision(revision_id)
748
except errors.NoSuchRevision, e:
749
raise errors.BzrCheckError("mainline revision {%s} not in repository"
751
# In general the first entry on the revision history has no parents.
752
# But it's not illegal for it to have parents listed; this can happen
753
# in imports from Arch when the parents weren't reachable.
754
if mainline_parent_id is not None:
755
if mainline_parent_id not in revision.parent_ids:
756
raise errors.BzrCheckError("previous revision {%s} not listed among "
758
% (mainline_parent_id, revision_id))
759
mainline_parent_id = revision_id
760
return BranchCheckResult(self)
1322
762
def _get_checkout_format(self):
1323
763
"""Return the most suitable metadir for a checkout of this branch.
1332
772
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
775
def create_checkout(self, to_location, revision_id=None,
1357
lightweight=False, accelerator_tree=None,
1359
777
"""Create a checkout of a branch.
1361
779
:param to_location: The url to produce the checkout at
1362
780
:param revision_id: The revision to check out
1363
781
:param lightweight: If True, produce a lightweight checkout, otherwise,
1364
782
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
783
:return: The tree of the created checkout
1373
785
t = transport.get_transport(to_location)
788
except errors.FileExists:
1376
791
format = self._get_checkout_format()
1377
792
checkout = format.initialize_on_transport(t)
1378
from_branch = BranchReferenceFormat().initialize(checkout,
793
BranchReferenceFormat().initialize(checkout, self)
1381
795
format = self._get_checkout_format()
1382
796
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1383
797
to_location, force_new_tree=False, format=format)
1384
798
checkout = checkout_branch.bzrdir
1385
799
checkout_branch.bind(self)
1386
# pull up to the specified revision_id to set the initial
800
# pull up to the specified revision_id to set the initial
1387
801
# branch tip correctly, and seed it with history.
1388
802
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,
803
tree = checkout.create_workingtree(revision_id)
1394
804
basis_tree = tree.basis_tree()
1395
805
basis_tree.lock_read()
1403
813
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):
816
def reference_parent(self, file_id, path):
1415
817
"""Return the parent branch for a tree-reference file_id
1416
818
:param file_id: The file_id of the tree reference
1417
819
:param path: The path of the file_id in the tree
1418
820
:return: A branch associated with the file_id
1420
822
# FIXME should provide multiple branches, based on config
1421
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1422
possible_transports=possible_transports)
823
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1424
825
def supports_tags(self):
1425
826
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
829
class BranchFormat(object):
1476
830
"""An encapsulation of the initialization and open routines for a format.
1585
909
control_files = lockable_files.LockableFiles(branch_transport,
1586
910
lock_name, lock_class)
1587
911
control_files.create_lock()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
912
control_files.lock_write()
1597
utf8_files += [('format', self.get_format_string())]
914
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())
916
for file, content in utf8_files:
917
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)
919
control_files.unlock()
920
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.
922
def initialize(self, a_bzrdir):
923
"""Create a branch of this format in a_bzrdir."""
1615
924
raise NotImplementedError(self.initialize)
1617
926
def is_supported(self):
1618
927
"""Is this format supported?
1620
929
Supported formats can be initialized and opened.
1621
Unsupported formats may not support initialization or committing or
930
Unsupported formats may not support initialization or committing or
1622
931
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):
935
def open(self, a_bzrdir, _found=False):
1651
936
"""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.
938
_found is a private parameter, do not use it. It is used to indicate
939
if format probing has already be done.
1660
941
raise NotImplementedError(self.open)
1663
944
def register_format(klass, format):
1664
"""Register a metadir format."""
1665
945
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
948
def set_default_format(klass, format):
1672
949
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
952
def unregister_format(klass, format):
953
assert klass._formats[format.get_format_string()] is format
1684
954
del klass._formats[format.get_format_string()]
1686
956
def __str__(self):
1687
return self.get_format_description().rstrip()
957
return self.get_format_string().rstrip()
1689
959
def supports_tags(self):
1690
960
"""True if this format supports tags stored in the branch"""
1691
961
return False # by default
963
# XXX: Probably doesn't really belong here -- mbp 20070212
964
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
966
branch_transport = a_bzrdir.get_branch_transport(self)
967
control_files = lockable_files.LockableFiles(branch_transport,
968
lock_filename, lock_class)
969
control_files.create_lock()
970
control_files.lock_write()
972
for filename, content in utf8_files:
973
control_files.put_utf8(filename, content)
975
control_files.unlock()
1694
978
class BranchHooks(Hooks):
1695
979
"""A dictionary mapping hook name to a list of callables for branch hooks.
1697
981
e.g. ['set_rh'] Is the list of items to be called when the
1698
982
set_revision_history function is invoked.
1707
991
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))
992
# Introduced in 0.15:
993
# invoked whenever the revision history has been set
994
# with set_revision_history. The api signature is
995
# (branch, revision_history), and the branch will
998
# invoked after a push operation completes.
999
# the api signature is
1001
# containing the members
1002
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1003
# where local is the local branch or None, master is the target
1004
# master branch, and the rest should be self explanatory. The source
1005
# is read locked and the target branches write locked. Source will
1006
# be the local low-latency branch.
1007
self['post_push'] = []
1008
# invoked after a pull operation completes.
1009
# the api signature is
1011
# containing the members
1012
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1013
# where local is the local branch or None, master is the target
1014
# master branch, and the rest should be self explanatory. The source
1015
# is read locked and the target branches write locked. The local
1016
# branch is the low-latency branch.
1017
self['post_pull'] = []
1018
# invoked after a commit operation completes.
1019
# the api signature is
1020
# (local, master, old_revno, old_revid, new_revno, new_revid)
1021
# old_revid is NULL_REVISION for the first commit to a branch.
1022
self['post_commit'] = []
1023
# invoked after a uncommit operation completes.
1024
# the api signature is
1025
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1026
# local is the local branch or None, master is the target branch,
1027
# and an empty branch recieves new_revno of 0, new_revid of None.
1028
self['post_uncommit'] = []
1787
1031
# install the default hooks into the Branch class.
1788
1032
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
1035
class BzrBranchFormat4(BranchFormat):
1908
1036
"""Bzr branch format 4.
1916
1044
"""See BranchFormat.get_format_description()."""
1917
1045
return "Branch format 4"
1919
def initialize(self, a_bzrdir, name=None):
1047
def initialize(self, a_bzrdir):
1920
1048
"""Create a branch of this format in a_bzrdir."""
1921
1049
utf8_files = [('revision-history', ''),
1922
1050
('branch-name', ''),
1924
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1052
return self._initialize_helper(a_bzrdir, utf8_files,
1925
1053
lock_type='branch4', set_format=False)
1927
1055
def __init__(self):
1928
1056
super(BzrBranchFormat4, self).__init__()
1929
1057
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()
1059
def open(self, a_bzrdir, _found=False):
1060
"""Return the branch object for a_bzrdir
1935
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1936
"""See BranchFormat.open()."""
1062
_found is a private parameter, do not use it. It is used to indicate
1063
if format probing has already be done.
1938
1066
# we are being called directly and must probe.
1939
1067
raise NotImplementedError
1940
1068
return BzrBranch(_format=self,
1941
1069
_control_files=a_bzrdir._control_files,
1942
1070
a_bzrdir=a_bzrdir,
1944
1071
_repository=a_bzrdir.open_repository())
1946
1073
def __str__(self):
1947
1074
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.
1077
class BzrBranchFormat5(BranchFormat):
1078
"""Bzr branch format 5.
1081
- a revision-history file.
1083
- a lock dir guarding the branch itself
1084
- all of this stored in a branch/ subdirectory
1085
- works with shared repositories.
1087
This format is new in bzr 0.8.
1090
def get_format_string(self):
1091
"""See BranchFormat.get_format_string()."""
1092
return "Bazaar-NG branch format 5\n"
1094
def get_format_description(self):
1095
"""See BranchFormat.get_format_description()."""
1096
return "Branch format 5"
1098
def initialize(self, a_bzrdir):
1099
"""Create a branch of this format in a_bzrdir."""
1100
utf8_files = [('revision-history', ''),
1101
('branch-name', ''),
1103
return self._initialize_helper(a_bzrdir, utf8_files)
1106
super(BzrBranchFormat5, self).__init__()
1107
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1109
def open(self, a_bzrdir, _found=False):
1110
"""Return the branch object for a_bzrdir
1112
_found is a private parameter, do not use it. It is used to indicate
1113
if format probing has already be done.
1962
return self.get_format_string()
1964
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1965
"""See BranchFormat.open()."""
1967
format = BranchFormat.find_format(a_bzrdir, name=name)
1968
if format.__class__ != self.__class__:
1969
raise AssertionError("wrong format %r found for %r" %
1971
transport = a_bzrdir.get_branch_transport(None, name=name)
1116
format = BranchFormat.find_format(a_bzrdir)
1117
assert format.__class__ == self.__class__
1119
transport = a_bzrdir.get_branch_transport(None)
1973
1120
control_files = lockable_files.LockableFiles(transport, 'lock',
1974
1121
lockdir.LockDir)
1975
return self._branch_class()(_format=self,
1122
return BzrBranch5(_format=self,
1976
1123
_control_files=control_files,
1978
1124
a_bzrdir=a_bzrdir,
1979
_repository=a_bzrdir.find_repository(),
1980
ignore_fallbacks=ignore_fallbacks)
1981
except errors.NoSuchFile:
1982
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1985
super(BranchFormatMetadir, self).__init__()
1986
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1987
self._matchingbzrdir.set_branch_format(self)
1989
def supports_tags(self):
1993
class BzrBranchFormat5(BranchFormatMetadir):
1994
"""Bzr branch format 5.
1997
- a revision-history file.
1999
- a lock dir guarding the branch itself
2000
- all of this stored in a branch/ subdirectory
2001
- works with shared repositories.
2003
This format is new in bzr 0.8.
2006
def _branch_class(self):
2009
def get_format_string(self):
2010
"""See BranchFormat.get_format_string()."""
2011
return "Bazaar-NG branch format 5\n"
2013
def get_format_description(self):
2014
"""See BranchFormat.get_format_description()."""
2015
return "Branch format 5"
2017
def initialize(self, a_bzrdir, name=None):
2018
"""Create a branch of this format in a_bzrdir."""
2019
utf8_files = [('revision-history', ''),
2020
('branch-name', ''),
2022
return self._initialize_helper(a_bzrdir, utf8_files, name)
2024
def supports_tags(self):
2028
class BzrBranchFormat6(BranchFormatMetadir):
2029
"""Branch format with last-revision and tags.
1125
_repository=a_bzrdir.find_repository())
1127
raise NotBranchError(path=transport.base)
1130
class BzrBranchFormat6(BzrBranchFormat5):
1131
"""Branch format with last-revision
2031
1133
Unlike previous formats, this has no explicit revision history. Instead,
2032
1134
this just stores the last-revision, and the left-hand history leading
2033
1135
up to there is the history.
2035
1137
This format was introduced in bzr 0.15
2036
and became the default in 0.91.
2039
def _branch_class(self):
2042
1140
def get_format_string(self):
2043
1141
"""See BranchFormat.get_format_string()."""
2044
1142
return "Bazaar Branch Format 6 (bzr 0.15)\n"
2047
1145
"""See BranchFormat.get_format_description()."""
2048
1146
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
1148
def initialize(self, a_bzrdir):
1149
"""Create a branch of this format in a_bzrdir."""
1150
utf8_files = [('last-revision', '0 null:\n'),
1151
('branch-name', ''),
1152
('branch.conf', ''),
1155
return self._initialize_helper(a_bzrdir, utf8_files)
1157
def open(self, a_bzrdir, _found=False):
1158
"""Return the branch object for a_bzrdir
1160
_found is a private parameter, do not use it. It is used to indicate
1161
if format probing has already be done.
1164
format = BranchFormat.find_format(a_bzrdir)
1165
assert format.__class__ == self.__class__
1166
transport = a_bzrdir.get_branch_transport(None)
1167
control_files = lockable_files.LockableFiles(transport, 'lock',
1169
return BzrBranch6(_format=self,
1170
_control_files=control_files,
1172
_repository=a_bzrdir.find_repository())
1174
def supports_tags(self):
2141
1178
class BranchReferenceFormat(BranchFormat):
2156
1193
def get_format_description(self):
2157
1194
"""See BranchFormat.get_format_description()."""
2158
1195
return "Checkout reference format 1"
2160
1197
def get_reference(self, a_bzrdir):
2161
1198
"""See BranchFormat.get_reference()."""
2162
1199
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):
1200
return transport.get('location').read()
1202
def initialize(self, a_bzrdir, target_branch=None):
2171
1203
"""Create a branch of this format in a_bzrdir."""
2172
1204
if target_branch is None:
2173
1205
# this format does not implement branch itself, thus the implicit
2174
1206
# creation contract must see it as uninitializable
2175
1207
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)
1208
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1209
branch_transport = a_bzrdir.get_branch_transport(self)
2178
1210
branch_transport.put_bytes('location',
2179
target_branch.bzrdir.user_url)
1211
target_branch.bzrdir.root_transport.base)
2180
1212
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)
1213
return self.open(a_bzrdir, _found=True)
2187
1215
def __init__(self):
2188
1216
super(BranchReferenceFormat, self).__init__()
2189
1217
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2190
self._matchingbzrdir.set_branch_format(self)
2192
1219
def _make_reference_clone_function(format, a_branch):
2193
1220
"""Create a clone() routine for a branch dynamically."""
2194
def clone(to_bzrdir, revision_id=None,
2195
repository_policy=None):
1221
def clone(to_bzrdir, revision_id=None):
2196
1222
"""See Branch.clone()."""
2197
return format.initialize(to_bzrdir, target_branch=a_branch)
1223
return format.initialize(to_bzrdir, a_branch)
2198
1224
# cannot obey revision_id limits when cloning a reference ...
2199
1225
# FIXME RBC 20060210 either nuke revision_id for clone, or
2200
1226
# 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):
1229
def open(self, a_bzrdir, _found=False, location=None):
2205
1230
"""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.
1232
_found is a private parameter, do not use it. It is used to indicate
1233
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" %
1236
format = BranchFormat.find_format(a_bzrdir)
1237
assert format.__class__ == self.__class__
2223
1238
if location is None:
2224
1239
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)
1240
real_bzrdir = bzrdir.BzrDir.open(location)
1241
result = real_bzrdir.open_branch()
2229
1242
# this changes the behaviour of result.clone to create a new reference
2230
1243
# rather than a copy of the content of the branch.
2231
1244
# 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
1254
# formats which have no format string are not discoverable
2251
1255
# 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)
1256
__default_format = BzrBranchFormat5()
1257
BranchFormat.register_format(__default_format)
2257
1258
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)
1259
BranchFormat.register_format(BzrBranchFormat6())
1260
BranchFormat.set_default_format(__default_format)
2262
1261
_legacy_formats = [BzrBranchFormat4(),
2264
network_format_registry.register(
2265
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2268
class BzrBranch(Branch, _RelockDebugMixin):
1264
class BzrBranch(Branch):
2269
1265
"""A branch stored in the actual filesystem.
2271
1267
Note that it's "local" in the context of the filesystem; it doesn't
2272
1268
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2273
1269
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
1272
def __init__(self, _format=None,
2285
_control_files=None, a_bzrdir=None, name=None,
2286
_repository=None, ignore_fallbacks=False):
1273
_control_files=None, a_bzrdir=None, _repository=None):
2287
1274
"""Create new branch object at a particular location."""
1275
Branch.__init__(self)
2288
1276
if a_bzrdir is None:
2289
1277
raise ValueError('a_bzrdir must be supplied')
2291
1279
self.bzrdir = a_bzrdir
1280
# self._transport used to point to the directory containing the
1281
# control directory, but was not used - now it's just the transport
1282
# for the branch control files. mbp 20070212
2292
1283
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
1284
self._format = _format
2298
1285
if _control_files is None:
2299
1286
raise ValueError('BzrBranch _control_files is None')
2300
1287
self.control_files = _control_files
2301
1288
self._transport = _control_files._transport
2302
1289
self.repository = _repository
2303
Branch.__init__(self)
2305
1291
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,
1292
return '%s(%r)' % (self.__class__.__name__, self.base)
2312
1294
__repr__ = __str__
2387
1355
"""See Branch.print_file."""
2388
1356
return self.repository.print_file(file, revision_id)
1359
def append_revision(self, *revision_ids):
1360
"""See Branch.append_revision."""
1361
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1362
for revision_id in revision_ids:
1363
_mod_revision.check_not_reserved_id(revision_id)
1364
mutter("add {%s} to revision-history" % revision_id)
1365
rev_history = self.revision_history()
1366
rev_history.extend(revision_ids)
1367
self.set_revision_history(rev_history)
2390
1369
def _write_revision_history(self, history):
2391
1370
"""Factored out of set_revision_history.
2393
1372
This performs the actual writing to disk.
2394
1373
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())
1374
self.control_files.put_bytes(
1375
'revision-history', '\n'.join(history))
2399
1377
@needs_write_lock
2400
1378
def set_revision_history(self, rev_history):
2401
1379
"""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)
1380
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1381
self._clear_cached_state()
2416
1382
self._write_revision_history(rev_history)
2417
self._clear_cached_state()
2418
1383
self._cache_revision_history(rev_history)
2419
1384
for hook in Branch.hooks['set_rh']:
2420
1385
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
1387
@needs_write_lock
2454
1388
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
1389
revision_id = osutils.safe_revision_id(revision_id)
2469
1390
history = self._lefthand_history(revision_id)
2470
if len(history) != revno:
2471
raise AssertionError('%d != %d' % (len(history), revno))
1391
assert len(history) == revno, '%d != %d' % (len(history), revno)
2472
1392
self.set_revision_history(history)
2474
1394
def _gen_revision_history(self):
2475
history = self._transport.get_bytes('revision-history').split('\n')
1395
history = self.control_files.get('revision-history').read().split('\n')
2476
1396
if history[-1:] == ['']:
2477
1397
# There shouldn't be a trailing newline, but just in case.
1401
def _lefthand_history(self, revision_id, last_rev=None,
1403
# stop_revision must be a descendant of last_revision
1404
stop_graph = self.repository.get_revision_graph(revision_id)
1405
if last_rev is not None and last_rev not in stop_graph:
1406
# our previous tip is not merged into stop_revision
1407
raise errors.DivergedBranches(self, other_branch)
1408
# make a new revision history from the graph
1409
current_rev_id = revision_id
1411
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1412
new_history.append(current_rev_id)
1413
current_rev_id_parents = stop_graph[current_rev_id]
1415
current_rev_id = current_rev_id_parents[0]
1417
current_rev_id = None
1418
new_history.reverse()
2481
1421
@needs_write_lock
2482
1422
def generate_revision_history(self, revision_id, last_rev=None,
2483
1423
other_branch=None):
2489
1429
:param other_branch: The other branch that DivergedBranches should
2490
1430
raise with respect to.
1432
revision_id = osutils.safe_revision_id(revision_id)
2492
1433
self.set_revision_history(self._lefthand_history(revision_id,
2493
1434
last_rev, other_branch))
1437
def update_revisions(self, other, stop_revision=None):
1438
"""See Branch.update_revisions."""
1441
if stop_revision is None:
1442
stop_revision = other.last_revision()
1443
if stop_revision is None:
1444
# if there are no commits, we're done.
1447
stop_revision = osutils.safe_revision_id(stop_revision)
1448
# whats the current last revision, before we fetch [and change it
1450
last_rev = self.last_revision()
1451
# we fetch here regardless of whether we need to so that we pickup
1453
self.fetch(other, stop_revision)
1454
my_ancestry = self.repository.get_ancestry(last_rev)
1455
if stop_revision in my_ancestry:
1456
# last_revision is a descendant of stop_revision
1458
self.generate_revision_history(stop_revision, last_rev=last_rev,
2495
1463
def basis_tree(self):
2496
1464
"""See Branch.basis_tree."""
2497
1465
return self.repository.revision_tree(self.last_revision())
1467
@deprecated_method(zero_eight)
1468
def working_tree(self):
1469
"""Create a Working tree object for this branch."""
1471
from bzrlib.transport.local import LocalTransport
1472
if (self.base.find('://') != -1 or
1473
not isinstance(self._transport, LocalTransport)):
1474
raise NoWorkingTree(self.base)
1475
return self.bzrdir.open_workingtree()
1478
def pull(self, source, overwrite=False, stop_revision=None,
1479
_hook_master=None, _run_hooks=True):
1482
:param _hook_master: Private parameter - set the branch to
1483
be supplied as the master to push hooks.
1484
:param _run_hooks: Private parameter - allow disabling of
1485
hooks, used when pushing to a master branch.
1487
result = PullResult()
1488
result.source_branch = source
1489
result.target_branch = self
1492
result.old_revno, result.old_revid = self.last_revision_info()
1494
self.update_revisions(source, stop_revision)
1495
except DivergedBranches:
1499
if stop_revision is None:
1500
stop_revision = source.last_revision()
1501
self.generate_revision_history(stop_revision)
1502
result.tag_conflicts = source.tags.merge_to(self.tags)
1503
result.new_revno, result.new_revid = self.last_revision_info()
1505
result.master_branch = _hook_master
1506
result.local_branch = self
1508
result.master_branch = self
1509
result.local_branch = None
1511
for hook in Branch.hooks['post_pull']:
2499
1517
def _get_parent_location(self):
2500
1518
_locs = ['parent', 'pull', 'x-pull']
2501
1519
for l in _locs:
2503
return self._transport.get_bytes(l).strip('\n')
2504
except errors.NoSuchFile:
1521
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.
1527
def push(self, target, overwrite=False, stop_revision=None,
1528
_hook_master=None, _run_hooks=True):
1531
:param _hook_master: Private parameter - set the branch to
1532
be supplied as the master to push hooks.
1533
:param _run_hooks: Private parameter - allow disabling of
1534
hooks, used when pushing to a master branch.
2513
result = BranchPushResult()
1536
result = PushResult()
2514
1537
result.source_branch = self
2515
1538
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()
1541
result.old_revno, result.old_revid = target.last_revision_info()
1543
target.update_revisions(self, stop_revision)
1544
except DivergedBranches:
1548
target.set_revision_history(self.revision_history())
1549
result.tag_conflicts = self.tags.merge_to(target.tags)
1550
result.new_revno, result.new_revid = target.last_revision_info()
1552
result.master_branch = _hook_master
1553
result.local_branch = target
1555
result.master_branch = target
1556
result.local_branch = None
1558
for hook in Branch.hooks['post_push']:
2530
def get_stacked_on_url(self):
2531
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1564
def get_parent(self):
1565
"""See Branch.get_parent."""
1567
assert self.base[-1] == '/'
1568
parent = self._get_parent_location()
1571
# This is an old-format absolute path to a local branch
1572
# turn it into a url
1573
if parent.startswith('/'):
1574
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1576
return urlutils.join(self.base[:-1], parent)
1577
except errors.InvalidURLJoin, e:
1578
raise errors.InaccessibleParent(parent, self.base)
2533
1580
def set_push_location(self, location):
2534
1581
"""See Branch.set_push_location."""
2536
1583
'push_location', location,
2537
1584
store=_mod_config.STORE_LOCATION_NORECURSE)
1587
def set_parent(self, url):
1588
"""See Branch.set_parent."""
1589
# TODO: Maybe delete old location files?
1590
# URLs should never be unicode, even on the local fs,
1591
# FIXUP this and get_parent in a future branch format bump:
1592
# read and rewrite the file, and have the new format code read
1593
# using .get not .get_utf8. RBC 20060125
1595
if isinstance(url, unicode):
1597
url = url.encode('ascii')
1598
except UnicodeEncodeError:
1599
raise errors.InvalidURL(url,
1600
"Urls must be 7-bit ascii, "
1601
"use bzrlib.urlutils.escape")
1602
url = urlutils.relative_url(self.base, url)
1603
self._set_parent_location(url)
2539
1605
def _set_parent_location(self, url):
2540
1606
if url is None:
2541
self._transport.delete('parent')
1607
self.control_files._transport.delete('parent')
2543
self._transport.put_bytes('parent', url + '\n',
2544
mode=self.bzrdir._get_file_mode())
1609
assert isinstance(url, str)
1610
self.control_files.put_bytes('parent', url + '\n')
1612
@deprecated_function(zero_nine)
1613
def tree_config(self):
1614
"""DEPRECATED; call get_config instead.
1615
TreeConfig has become part of BranchConfig."""
1616
return TreeConfig(self)
2547
1619
class BzrBranch5(BzrBranch):
2548
"""A format 5 branch. This supports new features over plain branches.
1620
"""A format 5 branch. This supports new features over plan branches.
2550
1622
It has support for a master_branch which is the data for bound branches.
1630
super(BzrBranch5, self).__init__(_format=_format,
1631
_control_files=_control_files,
1633
_repository=_repository)
1636
def pull(self, source, overwrite=False, stop_revision=None,
1638
"""Extends branch.pull to be bound branch aware.
1640
:param _run_hooks: Private parameter used to force hook running
1641
off during bound branch double-pushing.
1643
bound_location = self.get_bound_location()
1644
master_branch = None
1645
if bound_location and source.base != bound_location:
1646
# not pulling from master, so we need to update master.
1647
master_branch = self.get_master_branch()
1648
master_branch.lock_write()
1651
# pull from source into master.
1652
master_branch.pull(source, overwrite, stop_revision,
1654
return super(BzrBranch5, self).pull(source, overwrite,
1655
stop_revision, _hook_master=master_branch,
1656
_run_hooks=_run_hooks)
1659
master_branch.unlock()
1662
def push(self, target, overwrite=False, stop_revision=None):
1663
"""Updates branch.push to be bound branch aware."""
1664
bound_location = target.get_bound_location()
1665
master_branch = None
1666
if bound_location and target.base != bound_location:
1667
# not pushing to master, so we need to update master.
1668
master_branch = target.get_master_branch()
1669
master_branch.lock_write()
1672
# push into the master from this branch.
1673
super(BzrBranch5, self).push(master_branch, overwrite,
1674
stop_revision, _run_hooks=False)
1675
# and push into the target branch from this. Note that we push from
1676
# this branch again, because its considered the highest bandwidth
1678
return super(BzrBranch5, self).push(target, overwrite,
1679
stop_revision, _hook_master=master_branch)
1682
master_branch.unlock()
2553
1684
def get_bound_location(self):
2555
return self._transport.get_bytes('bound')[:-1]
1686
return self.control_files.get_utf8('bound').read()[:-1]
2556
1687
except errors.NoSuchFile:
2559
1690
@needs_read_lock
2560
def get_master_branch(self, possible_transports=None):
1691
def get_master_branch(self):
2561
1692
"""Return the branch we are bound to.
2563
1694
:return: Either a Branch, or None
2565
1696
This could memoise the branch, but if thats done
2625
1770
return self.set_bound_location(None)
2627
1772
@needs_write_lock
2628
def update(self, possible_transports=None):
2629
"""Synchronise this branch with the master branch if any.
1774
"""Synchronise this branch with the master branch if any.
2631
1776
:return: None or the last_revision that was pivoted out during the
2634
master = self.get_master_branch(possible_transports)
1779
master = self.get_master_branch()
2635
1780
if master is not None:
2636
old_tip = _mod_revision.ensure_null(self.last_revision())
1781
old_tip = self.last_revision()
2637
1782
self.pull(master, overwrite=True)
2638
if self.repository.get_graph().is_ancestor(old_tip,
2639
_mod_revision.ensure_null(self.last_revision())):
1783
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:
1789
class BzrBranchExperimental(BzrBranch5):
1790
"""Bzr experimental branch format
1793
- a revision-history file.
1795
- a lock dir guarding the branch itself
1796
- all of this stored in a branch/ subdirectory
1797
- works with shared repositories.
1798
- a tag dictionary in the branch
1800
This format is new in bzr 0.15, but shouldn't be used for real data,
1803
This class acts as it's own BranchFormat.
1806
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1809
def get_format_string(cls):
1810
"""See BranchFormat.get_format_string()."""
1811
return "Bazaar-NG branch format experimental\n"
1814
def get_format_description(cls):
1815
"""See BranchFormat.get_format_description()."""
1816
return "Experimental branch format"
1819
def get_reference(cls, a_bzrdir):
1820
"""Get the target reference of the branch in a_bzrdir.
1822
format probing must have been completed before calling
1823
this method - it is assumed that the format of the branch
1824
in a_bzrdir is correct.
1826
:param a_bzrdir: The bzrdir to get the branch data from.
1827
:return: None if the branch is not a reference branch.
1832
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1834
branch_transport = a_bzrdir.get_branch_transport(cls)
1835
control_files = lockable_files.LockableFiles(branch_transport,
1836
lock_filename, lock_class)
1837
control_files.create_lock()
1838
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')
1840
for filename, content in utf8_files:
1841
control_files.put_utf8(filename, content)
1843
control_files.unlock()
1846
def initialize(cls, a_bzrdir):
1847
"""Create a branch of this format in a_bzrdir."""
1848
utf8_files = [('format', cls.get_format_string()),
1849
('revision-history', ''),
1850
('branch-name', ''),
1853
cls._initialize_control_files(a_bzrdir, utf8_files,
1854
'lock', lockdir.LockDir)
1855
return cls.open(a_bzrdir, _found=True)
1858
def open(cls, a_bzrdir, _found=False):
1859
"""Return the branch object for a_bzrdir
1861
_found is a private parameter, do not use it. It is used to indicate
1862
if format probing has already be done.
1865
format = BranchFormat.find_format(a_bzrdir)
1866
assert format.__class__ == cls
1867
transport = a_bzrdir.get_branch_transport(None)
1868
control_files = lockable_files.LockableFiles(transport, 'lock',
1870
return cls(_format=cls,
1871
_control_files=control_files,
1873
_repository=a_bzrdir.find_repository())
1876
def is_supported(cls):
1879
def _make_tags(self):
1880
return BasicTags(self)
1883
def supports_tags(cls):
1887
BranchFormat.register_format(BzrBranchExperimental)
1890
class BzrBranch6(BzrBranch5):
1893
def last_revision_info(self):
1894
revision_string = self.control_files.get('last-revision').read()
2679
1895
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2680
1896
revision_id = cache_utf8.get_cached_utf8(revision_id)
2681
1897
revno = int(revno)
2682
1898
return revno, revision_id
1900
def last_revision(self):
1901
"""Return last revision id, or None"""
1902
revision_id = self.last_revision_info()[1]
1903
if revision_id == _mod_revision.NULL_REVISION:
2684
1907
def _write_last_revision_info(self, revno, revision_id):
2685
1908
"""Simply write out the revision id, with no checks.
2690
1913
Intended to be called by set_last_revision_info and
2691
1914
_write_revision_history.
2693
revision_id = _mod_revision.ensure_null(revision_id)
1916
if revision_id is None:
1917
revision_id = 'null:'
2694
1918
out_string = '%d %s\n' % (revno, revision_id)
2695
self._transport.put_bytes('last-revision', out_string,
2696
mode=self.bzrdir._get_file_mode())
1919
self.control_files.put_bytes('last-revision', out_string)
2698
1921
@needs_write_lock
2699
1922
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()
1923
revision_id = osutils.safe_revision_id(revision_id)
2702
1924
if self._get_append_revisions_only():
2703
1925
self._check_history_violation(revision_id)
2704
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2705
1926
self._write_last_revision_info(revno, revision_id)
2706
1927
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
1929
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):
1930
last_revision = self.last_revision()
1931
if last_revision is None:
2726
1933
if last_revision not in self._lefthand_history(revision_id):
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1934
raise errors.AppendRevisionsOnlyViolation(self.base)
2729
1936
def _gen_revision_history(self):
2730
1937
"""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))
1939
history = list(self.repository.iter_reverse_revision_history(
1940
self.last_revision()))
2736
1944
def _write_revision_history(self, history):
2737
1945
"""Factored out of set_revision_history.
2759
1986
"""Set the parent branch"""
2760
1987
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
1989
def set_push_location(self, location):
2838
1990
"""See Branch.set_push_location."""
2839
1991
self._set_config_location('push_location', location)
2872
2024
"""See Branch.get_old_bound_location"""
2873
2025
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)
2027
def set_append_revisions_only(self, enabled):
2032
self.get_config().set_user_option('append_revisions_only', value)
2884
2034
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]
2035
value = self.get_config().get_user_option('append_revisions_only')
2036
return value == 'True'
2038
def _synchronize_history(self, destination, revision_id):
2039
"""Synchronize last revision and revision history between branches.
2041
This version is most efficient when the destination is also a
2042
BzrBranch6, but works for BzrBranch5, as long as the destination's
2043
repository contains all the lefthand ancestors of the intended
2044
last_revision. If not, set_last_revision_info will fail.
2046
:param destination: The branch to copy the history into
2047
:param revision_id: The revision-id to truncate history at. May
2048
be None to copy complete history.
2050
if revision_id is None:
2051
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,
2053
revno = self.revision_id_to_revno(revision_id)
2054
destination.set_last_revision_info(revno, revision_id)
2056
def _make_tags(self):
2057
return BasicTags(self)
2060
class BranchTestProviderAdapter(object):
2061
"""A tool to generate a suite testing multiple branch formats at once.
2063
This is done by copying the test once for each transport and injecting
2064
the transport_server, transport_readonly_server, and branch_format
2065
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)
2069
def __init__(self, transport_server, transport_readonly_server, formats,
2070
vfs_transport_factory=None):
2071
self._transport_server = transport_server
2072
self._transport_readonly_server = transport_readonly_server
2073
self._formats = formats
2075
def adapt(self, test):
2076
result = TestSuite()
2077
for branch_format, bzrdir_format in self._formats:
2078
new_test = deepcopy(test)
2079
new_test.transport_server = self._transport_server
2080
new_test.transport_readonly_server = self._transport_readonly_server
2081
new_test.bzrdir_format = bzrdir_format
2082
new_test.branch_format = branch_format
2083
def make_new_test_id():
2084
# the format can be either a class or an instance
2085
name = getattr(branch_format, '__name__',
2086
branch_format.__class__.__name__)
2087
new_id = "%s(%s)" % (new_test.id(), name)
2088
return lambda: new_id
2089
new_test.id = make_new_test_id()
2090
result.addTest(new_test)
2957
2094
######################################################################
3068
2192
new_branch.tags._set_tag_dict({})
3070
2194
# 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())
2195
new_branch.control_files.put_utf8('format',
2196
format.get_format_string())
3075
2198
# Clean up old files
3076
new_branch._transport.delete('revision-history')
2199
new_branch.control_files._transport.delete('revision-history')
3078
2201
branch.set_parent(None)
3079
except errors.NoSuchFile:
3081
2204
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
