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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 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, LogicalLockResult
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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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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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def open_from_transport(transport, _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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return control.open_branch(_unsupported)
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def open_containing(url, possible_transports=None):
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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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possible_transports)
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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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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)
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# Make sure we don't return revisions that are not part of the
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# start_revision_id ancestry.
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filtered = self._filter_start_non_ancestors(filtered)
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if direction == 'reverse':
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if direction == 'forward':
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return reversed(list(filtered))
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raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
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"""Iterate over an inclusive range of sorted revisions."""
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rev_iter = iter(merge_sorted_revisions)
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if start_revision_id is not None:
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id != start_revision_id:
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# The decision to include the start or not
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# depends on the stop_rule if a stop is provided
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# so pop this node back into the iterator
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rev_iter = chain(iter([node]), rev_iter)
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if stop_revision_id is None:
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for node in rev_iter:
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rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'exclude':
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id == stop_revision_id:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'include':
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for node in rev_iter:
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rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
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if rev_id == stop_revision_id:
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elif stop_rule == 'with-merges-without-common-ancestry':
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# We want to exclude all revisions that are already part of the
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# stop_revision_id ancestry.
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graph = self.repository.get_graph()
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ancestors = graph.find_unique_ancestors(start_revision_id,
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for node in rev_iter:
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rev_id = node.key[-1]
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if rev_id not in ancestors:
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yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'with-merges':
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stop_rev = self.repository.get_revision(stop_revision_id)
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if stop_rev.parent_ids:
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left_parent = stop_rev.parent_ids[0]
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left_parent = _mod_revision.NULL_REVISION
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# left_parent is the actual revision we want to stop logging at,
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# since we want to show the merged revisions after the stop_rev too
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reached_stop_revision_id = False
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revision_id_whitelist = []
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for node in rev_iter:
534
rev_id = node.key[-1]
535
if rev_id == left_parent:
536
# reached the left parent after the stop_revision
538
if (not reached_stop_revision_id or
539
rev_id in revision_id_whitelist):
540
yield (rev_id, node.merge_depth, node.revno,
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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
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rev = self.repository.get_revision(rev_id)
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reached_stop_revision_id = True
547
revision_id_whitelist.extend(rev.parent_ids)
549
raise ValueError('invalid stop_rule %r' % stop_rule)
551
def _filter_start_non_ancestors(self, rev_iter):
552
# If we started from a dotted revno, we want to consider it as a tip
553
# and don't want to yield revisions that are not part of its
554
# ancestry. Given the order guaranteed by the merge sort, we will see
555
# uninteresting descendants of the first parent of our tip before the
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first = rev_iter.next()
558
(rev_id, merge_depth, revno, end_of_merge) = first
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# We start at a mainline revision so by definition, all others
562
# revisions in rev_iter are ancestors
563
for node in rev_iter:
568
pmap = self.repository.get_parent_map([rev_id])
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parents = pmap.get(rev_id, [])
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whitelist.update(parents)
573
# If there is no parents, there is nothing of interest left
575
# FIXME: It's hard to test this scenario here as this code is never
576
# called in that case. -- vila 20100322
579
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
581
if rev_id in whitelist:
582
pmap = self.repository.get_parent_map([rev_id])
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parents = pmap.get(rev_id, [])
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whitelist.remove(rev_id)
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whitelist.update(parents)
587
# We've reached the mainline, there is nothing left to
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# A revision that is not part of the ancestry of our
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yield (rev_id, merge_depth, revno, end_of_merge)
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def leave_lock_in_place(self):
597
248
"""Tell this branch object not to release the physical lock when this
598
249
object is unlocked.
600
251
If lock_write doesn't return a token, then this method is not supported.
602
253
self.control_files.leave_in_place()
708
357
The delta is relative to its mainline predecessor, or the
709
358
empty tree for revision 1.
360
assert isinstance(revno, int)
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361
rh = self.revision_history()
712
362
if not (1 <= revno <= len(rh)):
713
raise errors.InvalidRevisionNumber(revno)
363
raise InvalidRevisionNumber(revno)
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364
return self.repository.get_revision_delta(rh[revno-1])
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def get_stacked_on_url(self):
717
"""Get the URL this branch is stacked against.
366
@deprecated_method(zero_sixteen)
367
def get_root_id(self):
368
"""Return the id of this branches root
719
:raises NotStacked: If the branch is not stacked.
720
:raises UnstackableBranchFormat: If the branch does not support
370
Deprecated: branches don't have root ids-- trees do.
371
Use basis_tree().get_root_id() instead.
723
raise NotImplementedError(self.get_stacked_on_url)
373
raise NotImplementedError(self.get_root_id)
725
375
def print_file(self, file, revision_id):
726
376
"""Print `file` to stdout."""
727
377
raise NotImplementedError(self.print_file)
379
def append_revision(self, *revision_ids):
380
raise NotImplementedError(self.append_revision)
729
382
def set_revision_history(self, rev_history):
730
383
raise NotImplementedError(self.set_revision_history)
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def set_parent(self, url):
734
"""See Branch.set_parent."""
735
# TODO: Maybe delete old location files?
736
# URLs should never be unicode, even on the local fs,
737
# FIXUP this and get_parent in a future branch format bump:
738
# read and rewrite the file. RBC 20060125
740
if isinstance(url, unicode):
742
url = url.encode('ascii')
743
except UnicodeEncodeError:
744
raise errors.InvalidURL(url,
745
"Urls must be 7-bit ascii, "
746
"use bzrlib.urlutils.escape")
747
url = urlutils.relative_url(self.base, url)
748
self._set_parent_location(url)
751
def set_stacked_on_url(self, url):
752
"""Set the URL this branch is stacked against.
754
:raises UnstackableBranchFormat: If the branch does not support
756
:raises UnstackableRepositoryFormat: If the repository does not support
759
if not self._format.supports_stacking():
760
raise errors.UnstackableBranchFormat(self._format, self.user_url)
761
# XXX: Changing from one fallback repository to another does not check
762
# that all the data you need is present in the new fallback.
763
# Possibly it should.
764
self._check_stackable_repo()
767
old_url = self.get_stacked_on_url()
768
except (errors.NotStacked, errors.UnstackableBranchFormat,
769
errors.UnstackableRepositoryFormat):
773
self._activate_fallback_location(url)
774
# write this out after the repository is stacked to avoid setting a
775
# stacked config that doesn't work.
776
self._set_config_location('stacked_on_location', url)
779
"""Change a branch to be unstacked, copying data as needed.
781
Don't call this directly, use set_stacked_on_url(None).
783
pb = ui.ui_factory.nested_progress_bar()
785
pb.update("Unstacking")
786
# The basic approach here is to fetch the tip of the branch,
787
# including all available ghosts, from the existing stacked
788
# repository into a new repository object without the fallbacks.
790
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
791
# correct for CHKMap repostiories
792
old_repository = self.repository
793
if len(old_repository._fallback_repositories) != 1:
794
raise AssertionError("can't cope with fallback repositories "
795
"of %r" % (self.repository,))
796
# unlock it, including unlocking the fallback
797
old_repository.unlock()
798
old_repository.lock_read()
800
# Repositories don't offer an interface to remove fallback
801
# repositories today; take the conceptually simpler option and just
802
# reopen it. We reopen it starting from the URL so that we
803
# get a separate connection for RemoteRepositories and can
804
# stream from one of them to the other. This does mean doing
805
# separate SSH connection setup, but unstacking is not a
806
# common operation so it's tolerable.
807
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
808
new_repository = new_bzrdir.find_repository()
809
self.repository = new_repository
810
if self.repository._fallback_repositories:
811
raise AssertionError("didn't expect %r to have "
812
"fallback_repositories"
813
% (self.repository,))
814
# this is not paired with an unlock because it's just restoring
815
# the previous state; the lock's released when set_stacked_on_url
817
self.repository.lock_write()
818
# XXX: If you unstack a branch while it has a working tree
819
# with a pending merge, the pending-merged revisions will no
820
# longer be present. You can (probably) revert and remerge.
822
# XXX: This only fetches up to the tip of the repository; it
823
# doesn't bring across any tags. That's fairly consistent
824
# with how branch works, but perhaps not ideal.
825
self.repository.fetch(old_repository,
826
revision_id=self.last_revision(),
829
old_repository.unlock()
833
def _set_tags_bytes(self, bytes):
834
"""Mirror method for _get_tags_bytes.
836
:seealso: Branch._get_tags_bytes.
838
return _run_with_write_locked_target(self, self._transport.put_bytes,
841
385
def _cache_revision_history(self, rev_history):
842
386
"""Set the cached revision history to rev_history.
952
491
common_index = min(self_len, other_len) -1
953
492
if common_index >= 0 and \
954
493
self_history[common_index] != other_history[common_index]:
955
raise errors.DivergedBranches(self, other)
494
raise DivergedBranches(self, other)
957
496
if stop_revision is None:
958
497
stop_revision = other_len
499
assert isinstance(stop_revision, int)
960
500
if stop_revision > other_len:
961
501
raise errors.NoSuchRevision(self, stop_revision)
962
502
return other_history[self_len:stop_revision]
965
def update_revisions(self, other, stop_revision=None, overwrite=False,
504
def update_revisions(self, other, stop_revision=None):
967
505
"""Pull in new perfect-fit revisions.
969
507
:param other: Another Branch to pull from
970
508
:param stop_revision: Updated until the given revision
971
:param overwrite: Always set the branch pointer, rather than checking
972
to see if it is a proper descendant.
973
:param graph: A Graph object that can be used to query history
974
information. This can be None.
977
return InterBranch.get(other, self).update_revisions(stop_revision,
980
def import_last_revision_info(self, source_repo, revno, revid):
981
"""Set the last revision info, importing from another repo if necessary.
983
This is used by the bound branch code to upload a revision to
984
the master branch first before updating the tip of the local branch.
986
:param source_repo: Source repository to optionally fetch from
987
:param revno: Revision number of the new tip
988
:param revid: Revision id of the new tip
990
if not self.repository.has_same_location(source_repo):
991
self.repository.fetch(source_repo, revision_id=revid)
992
self.set_last_revision_info(revno, revid)
511
raise NotImplementedError(self.update_revisions)
994
513
def revision_id_to_revno(self, revision_id):
995
514
"""Given a revision id, return its revno"""
996
515
if _mod_revision.is_null(revision_id):
517
revision_id = osutils.safe_revision_id(revision_id)
998
518
history = self.revision_history()
1000
520
return history.index(revision_id) + 1
1001
521
except ValueError:
1002
522
raise errors.NoSuchRevision(self, revision_id)
1005
524
def get_rev_id(self, revno, history=None):
1006
525
"""Find the revision id of the specified revno."""
1008
return _mod_revision.NULL_REVISION
1009
last_revno, last_revid = self.last_revision_info()
1010
if revno == last_revno:
1012
if revno <= 0 or revno > last_revno:
529
history = self.revision_history()
530
if revno <= 0 or revno > len(history):
1013
531
raise errors.NoSuchRevision(self, revno)
1014
distance_from_last = last_revno - revno
1015
if len(self._partial_revision_history_cache) <= distance_from_last:
1016
self._extend_partial_history(distance_from_last)
1017
return self._partial_revision_history_cache[distance_from_last]
532
return history[revno - 1]
1020
def pull(self, source, overwrite=False, stop_revision=None,
1021
possible_transports=None, *args, **kwargs):
534
def pull(self, source, overwrite=False, stop_revision=None):
1022
535
"""Mirror source into this branch.
1024
537
This branch is considered to be 'local', having low latency.
1026
539
:returns: PullResult instance
1028
return InterBranch.get(source, self).pull(overwrite=overwrite,
1029
stop_revision=stop_revision,
1030
possible_transports=possible_transports, *args, **kwargs)
541
raise NotImplementedError(self.pull)
1032
def push(self, target, overwrite=False, stop_revision=None, *args,
543
def push(self, target, overwrite=False, stop_revision=None):
1034
544
"""Mirror this branch into target.
1036
546
This branch is considered to be 'local', having low latency.
1038
return InterBranch.get(self, target).push(overwrite, stop_revision,
1041
def lossy_push(self, target, stop_revision=None):
1042
"""Push deltas into another branch.
1044
:note: This does not, like push, retain the revision ids from
1045
the source branch and will, rather than adding bzr-specific
1046
metadata, push only those semantics of the revision that can be
1047
natively represented by this branch' VCS.
1049
:param target: Target branch
1050
:param stop_revision: Revision to push, defaults to last revision.
1051
:return: BranchPushResult with an extra member revidmap:
1052
A dictionary mapping revision ids from the target branch
1053
to new revision ids in the target branch, for each
1054
revision that was pushed.
1056
inter = InterBranch.get(self, target)
1057
lossy_push = getattr(inter, "lossy_push", None)
1058
if lossy_push is None:
1059
raise errors.LossyPushToSameVCS(self, target)
1060
return lossy_push(stop_revision)
548
raise NotImplementedError(self.push)
1062
550
def basis_tree(self):
1063
551
"""Return `Tree` object for last revision."""
1064
552
return self.repository.revision_tree(self.last_revision())
554
def rename_one(self, from_rel, to_rel):
557
This can change the directory or the filename or both.
559
raise NotImplementedError(self.rename_one)
561
def move(self, from_paths, to_name):
564
to_name must exist as a versioned directory.
566
If to_name exists and is a directory, the files are moved into
567
it, keeping their old names. If it is a directory,
569
Note that to_name is only the last component of the new name;
570
this doesn't change the directory.
572
This returns a list of (from_path, to_path) pairs for each
575
raise NotImplementedError(self.move)
1066
577
def get_parent(self):
1067
578
"""Return the parent location of the branch.
1069
This is the default location for pull/missing. The usual
580
This is the default location for push/pull/missing. The usual
1070
581
pattern is that the user can override it by specifying a
1073
parent = self._get_parent_location()
1076
# This is an old-format absolute path to a local branch
1077
# turn it into a url
1078
if parent.startswith('/'):
1079
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1081
return urlutils.join(self.base[:-1], parent)
1082
except errors.InvalidURLJoin, e:
1083
raise errors.InaccessibleParent(parent, self.user_url)
1085
def _get_parent_location(self):
1086
raise NotImplementedError(self._get_parent_location)
584
raise NotImplementedError(self.get_parent)
1088
586
def _set_config_location(self, name, url, config=None,
1089
587
make_relative=False):
1190
665
self.check_real_revno(revno)
1192
667
def check_real_revno(self, revno):
1194
669
Check whether a revno corresponds to a real revision.
1195
670
Zero (the NULL revision) is considered invalid
1197
672
if revno < 1 or revno > self.revno():
1198
raise errors.InvalidRevisionNumber(revno)
673
raise InvalidRevisionNumber(revno)
1200
675
@needs_read_lock
1201
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
676
def clone(self, to_bzrdir, revision_id=None):
1202
677
"""Clone this branch into to_bzrdir preserving all semantic values.
1204
Most API users will want 'create_clone_on_transport', which creates a
1205
new bzrdir and branch on the fly.
1207
679
revision_id: if not None, the revision history in the new branch will
1208
680
be truncated to end with revision_id.
1210
result = to_bzrdir.create_branch()
1213
if repository_policy is not None:
1214
repository_policy.configure_branch(result)
1215
self.copy_content_into(result, revision_id=revision_id)
682
result = self._format.initialize(to_bzrdir)
683
self.copy_content_into(result, revision_id=revision_id)
1220
686
@needs_read_lock
1221
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
687
def sprout(self, to_bzrdir, revision_id=None):
1222
688
"""Create a new line of development from the branch, into to_bzrdir.
1224
to_bzrdir controls the branch format.
1226
690
revision_id: if not None, the revision history in the new branch will
1227
691
be truncated to end with revision_id.
1229
if (repository_policy is not None and
1230
repository_policy.requires_stacking()):
1231
to_bzrdir._format.require_stacking(_skip_repo=True)
1232
result = to_bzrdir.create_branch()
1235
if repository_policy is not None:
1236
repository_policy.configure_branch(result)
1237
self.copy_content_into(result, revision_id=revision_id)
1238
result.set_parent(self.bzrdir.root_transport.base)
693
result = self._format.initialize(to_bzrdir)
694
self.copy_content_into(result, revision_id=revision_id)
695
result.set_parent(self.bzrdir.root_transport.base)
1243
698
def _synchronize_history(self, destination, revision_id):
1244
699
"""Synchronize last revision and revision history between branches.
1246
701
This version is most efficient when the destination is also a
1247
BzrBranch6, but works for BzrBranch5, as long as the destination's
1248
repository contains all the lefthand ancestors of the intended
1249
last_revision. If not, set_last_revision_info will fail.
702
BzrBranch5, but works for BzrBranch6 as long as the revision
703
history is the true lefthand parent history, and all of the revisions
704
are in the destination's repository. If not, set_revision_history
1251
707
:param destination: The branch to copy the history into
1252
708
:param revision_id: The revision-id to truncate history at. May
1253
709
be None to copy complete history.
1255
source_revno, source_revision_id = self.last_revision_info()
1256
if revision_id is None:
1257
revno, revision_id = source_revno, source_revision_id
1259
graph = self.repository.get_graph()
711
if revision_id == _mod_revision.NULL_REVISION:
713
new_history = self.revision_history()
714
if revision_id is not None and new_history != []:
715
revision_id = osutils.safe_revision_id(revision_id)
1261
revno = graph.find_distance_to_null(revision_id,
1262
[(source_revision_id, source_revno)])
1263
except errors.GhostRevisionsHaveNoRevno:
1264
# Default to 1, if we can't find anything else
1266
destination.set_last_revision_info(revno, revision_id)
717
new_history = new_history[:new_history.index(revision_id) + 1]
719
rev = self.repository.get_revision(revision_id)
720
new_history = rev.get_history(self.repository)[1:]
721
destination.set_revision_history(new_history)
1268
723
@needs_read_lock
1269
724
def copy_content_into(self, destination, revision_id=None):
1283
737
destination.set_parent(parent)
1284
if self._push_should_merge_tags():
1285
self.tags.merge_to(destination.tags)
1287
def update_references(self, target):
1288
if not getattr(self._format, 'supports_reference_locations', False):
1290
reference_dict = self._get_all_reference_info()
1291
if len(reference_dict) == 0:
1293
old_base = self.base
1294
new_base = target.base
1295
target_reference_dict = target._get_all_reference_info()
1296
for file_id, (tree_path, branch_location) in (
1297
reference_dict.items()):
1298
branch_location = urlutils.rebase_url(branch_location,
1300
target_reference_dict.setdefault(
1301
file_id, (tree_path, branch_location))
1302
target._set_all_reference_info(target_reference_dict)
738
self.tags.merge_to(destination.tags)
1304
740
@needs_read_lock
1305
def check(self, refs):
1306
742
"""Check consistency of the branch.
1308
744
In particular this checks that revisions given in the revision-history
1309
do actually match up in the revision graph, and that they're all
745
do actually match up in the revision graph, and that they're all
1310
746
present in the repository.
1312
748
Callers will typically also want to check the repository.
1314
:param refs: Calculated refs for this branch as specified by
1315
branch._get_check_refs()
1316
750
:return: A BranchCheckResult.
1318
result = BranchCheckResult(self)
1319
last_revno, last_revision_id = self.last_revision_info()
1320
actual_revno = refs[('lefthand-distance', last_revision_id)]
1321
if actual_revno != last_revno:
1322
result.errors.append(errors.BzrCheckError(
1323
'revno does not match len(mainline) %s != %s' % (
1324
last_revno, actual_revno)))
1325
# TODO: We should probably also check that self.revision_history
1326
# matches the repository for older branch formats.
1327
# If looking for the code that cross-checks repository parents against
1328
# the iter_reverse_revision_history output, that is now a repository
752
mainline_parent_id = None
753
for revision_id in self.revision_history():
755
revision = self.repository.get_revision(revision_id)
756
except errors.NoSuchRevision, e:
757
raise errors.BzrCheckError("mainline revision {%s} not in repository"
759
# In general the first entry on the revision history has no parents.
760
# But it's not illegal for it to have parents listed; this can happen
761
# in imports from Arch when the parents weren't reachable.
762
if mainline_parent_id is not None:
763
if mainline_parent_id not in revision.parent_ids:
764
raise errors.BzrCheckError("previous revision {%s} not listed among "
766
% (mainline_parent_id, revision_id))
767
mainline_parent_id = revision_id
768
return BranchCheckResult(self)
1332
770
def _get_checkout_format(self):
1333
771
"""Return the most suitable metadir for a checkout of this branch.
1415
818
basis_tree.unlock()
1419
def reconcile(self, thorough=True):
1420
"""Make sure the data stored in this branch is consistent."""
1421
from bzrlib.reconcile import BranchReconciler
1422
reconciler = BranchReconciler(self, thorough=thorough)
1423
reconciler.reconcile()
1426
def reference_parent(self, file_id, path, possible_transports=None):
821
def reference_parent(self, file_id, path):
1427
822
"""Return the parent branch for a tree-reference file_id
1428
823
:param file_id: The file_id of the tree reference
1429
824
:param path: The path of the file_id in the tree
1430
825
:return: A branch associated with the file_id
1432
827
# FIXME should provide multiple branches, based on config
1433
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1434
possible_transports=possible_transports)
828
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1436
830
def supports_tags(self):
1437
831
return self._format.supports_tags()
1439
def automatic_tag_name(self, revision_id):
1440
"""Try to automatically find the tag name for a revision.
1442
:param revision_id: Revision id of the revision.
1443
:return: A tag name or None if no tag name could be determined.
1445
for hook in Branch.hooks['automatic_tag_name']:
1446
ret = hook(self, revision_id)
1451
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1453
"""Ensure that revision_b is a descendant of revision_a.
1455
This is a helper function for update_revisions.
1457
:raises: DivergedBranches if revision_b has diverged from revision_a.
1458
:returns: True if revision_b is a descendant of revision_a.
1460
relation = self._revision_relations(revision_a, revision_b, graph)
1461
if relation == 'b_descends_from_a':
1463
elif relation == 'diverged':
1464
raise errors.DivergedBranches(self, other_branch)
1465
elif relation == 'a_descends_from_b':
1468
raise AssertionError("invalid relation: %r" % (relation,))
1470
def _revision_relations(self, revision_a, revision_b, graph):
1471
"""Determine the relationship between two revisions.
1473
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1475
heads = graph.heads([revision_a, revision_b])
1476
if heads == set([revision_b]):
1477
return 'b_descends_from_a'
1478
elif heads == set([revision_a, revision_b]):
1479
# These branches have diverged
1481
elif heads == set([revision_a]):
1482
return 'a_descends_from_b'
1484
raise AssertionError("invalid heads: %r" % (heads,))
1487
834
class BranchFormat(object):
1488
835
"""An encapsulation of the initialization and open routines for a format.
1599
920
control_files = lockable_files.LockableFiles(branch_transport,
1600
921
lock_name, lock_class)
1601
922
control_files.create_lock()
1603
control_files.lock_write()
1604
except errors.LockContention:
1605
if lock_type != 'branch4':
923
control_files.lock_write()
1611
utf8_files += [('format', self.get_format_string())]
925
control_files.put_utf8('format', self.get_format_string())
1613
for (filename, content) in utf8_files:
1614
branch_transport.put_bytes(
1616
mode=a_bzrdir._get_file_mode())
927
for file, content in utf8_files:
928
control_files.put_utf8(file, content)
1619
control_files.unlock()
1620
branch = self.open(a_bzrdir, name, _found=True)
1621
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
930
control_files.unlock()
931
return self.open(a_bzrdir, _found=True)
1624
def initialize(self, a_bzrdir, name=None):
1625
"""Create a branch of this format in a_bzrdir.
1627
:param name: Name of the colocated branch to create.
933
def initialize(self, a_bzrdir):
934
"""Create a branch of this format in a_bzrdir."""
1629
935
raise NotImplementedError(self.initialize)
1631
937
def is_supported(self):
1632
938
"""Is this format supported?
1634
940
Supported formats can be initialized and opened.
1635
Unsupported formats may not support initialization or committing or
941
Unsupported formats may not support initialization or committing or
1636
942
some other features depending on the reason for not being supported.
1640
def make_tags(self, branch):
1641
"""Create a tags object for branch.
1643
This method is on BranchFormat, because BranchFormats are reflected
1644
over the wire via network_name(), whereas full Branch instances require
1645
multiple VFS method calls to operate at all.
1647
The default implementation returns a disabled-tags instance.
1649
Note that it is normal for branch to be a RemoteBranch when using tags
1652
return DisabledTags(branch)
1654
def network_name(self):
1655
"""A simple byte string uniquely identifying this format for RPC calls.
1657
MetaDir branch formats use their disk format string to identify the
1658
repository over the wire. All in one formats such as bzr < 0.8, and
1659
foreign formats like svn/git and hg should use some marker which is
1660
unique and immutable.
1662
raise NotImplementedError(self.network_name)
1664
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
946
def open(self, a_bzrdir, _found=False):
1665
947
"""Return the branch object for a_bzrdir
1667
:param a_bzrdir: A BzrDir that contains a branch.
1668
:param name: Name of colocated branch to open
1669
:param _found: a private parameter, do not use it. It is used to
1670
indicate if format probing has already be done.
1671
:param ignore_fallbacks: when set, no fallback branches will be opened
1672
(if there are any). Default is to open fallbacks.
949
_found is a private parameter, do not use it. It is used to indicate
950
if format probing has already be done.
1674
952
raise NotImplementedError(self.open)
1677
955
def register_format(klass, format):
1678
"""Register a metadir format."""
1679
956
klass._formats[format.get_format_string()] = format
1680
# Metadir formats have a network name of their format string, and get
1681
# registered as class factories.
1682
network_format_registry.register(format.get_format_string(), format.__class__)
1685
959
def set_default_format(klass, format):
1686
960
klass._default_format = format
1688
def supports_set_append_revisions_only(self):
1689
"""True if this format supports set_append_revisions_only."""
1692
def supports_stacking(self):
1693
"""True if this format records a stacked-on branch."""
1697
963
def unregister_format(klass, format):
964
assert klass._formats[format.get_format_string()] is format
1698
965
del klass._formats[format.get_format_string()]
1700
967
def __str__(self):
1701
return self.get_format_description().rstrip()
968
return self.get_format_string().rstrip()
1703
970
def supports_tags(self):
1704
971
"""True if this format supports tags stored in the branch"""
1705
972
return False # by default
974
# XXX: Probably doesn't really belong here -- mbp 20070212
975
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
977
branch_transport = a_bzrdir.get_branch_transport(self)
978
control_files = lockable_files.LockableFiles(branch_transport,
979
lock_filename, lock_class)
980
control_files.create_lock()
981
control_files.lock_write()
983
for filename, content in utf8_files:
984
control_files.put_utf8(filename, content)
986
control_files.unlock()
1708
989
class BranchHooks(Hooks):
1709
990
"""A dictionary mapping hook name to a list of callables for branch hooks.
1711
992
e.g. ['set_rh'] Is the list of items to be called when the
1712
993
set_revision_history function is invoked.
1721
1002
Hooks.__init__(self)
1722
self.create_hook(HookPoint('set_rh',
1723
"Invoked whenever the revision history has been set via "
1724
"set_revision_history. The api signature is (branch, "
1725
"revision_history), and the branch will be write-locked. "
1726
"The set_rh hook can be expensive for bzr to trigger, a better "
1727
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1728
self.create_hook(HookPoint('open',
1729
"Called with the Branch object that has been opened after a "
1730
"branch is opened.", (1, 8), None))
1731
self.create_hook(HookPoint('post_push',
1732
"Called after a push operation completes. post_push is called "
1733
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1734
"bzr client.", (0, 15), None))
1735
self.create_hook(HookPoint('post_pull',
1736
"Called after a pull operation completes. post_pull is called "
1737
"with a bzrlib.branch.PullResult object and only runs in the "
1738
"bzr client.", (0, 15), None))
1739
self.create_hook(HookPoint('pre_commit',
1740
"Called after a commit is calculated but before it is is "
1741
"completed. pre_commit is called with (local, master, old_revno, "
1742
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1743
"). old_revid is NULL_REVISION for the first commit to a branch, "
1744
"tree_delta is a TreeDelta object describing changes from the "
1745
"basis revision. hooks MUST NOT modify this delta. "
1746
" future_tree is an in-memory tree obtained from "
1747
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1748
"tree.", (0,91), None))
1749
self.create_hook(HookPoint('post_commit',
1750
"Called in the bzr client after a commit has completed. "
1751
"post_commit is called with (local, master, old_revno, old_revid, "
1752
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1753
"commit to a branch.", (0, 15), None))
1754
self.create_hook(HookPoint('post_uncommit',
1755
"Called in the bzr client after an uncommit completes. "
1756
"post_uncommit is called with (local, master, old_revno, "
1757
"old_revid, new_revno, new_revid) where local is the local branch "
1758
"or None, master is the target branch, and an empty branch "
1759
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1760
self.create_hook(HookPoint('pre_change_branch_tip',
1761
"Called in bzr client and server before a change to the tip of a "
1762
"branch is made. pre_change_branch_tip is called with a "
1763
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1764
"commit, uncommit will all trigger this hook.", (1, 6), None))
1765
self.create_hook(HookPoint('post_change_branch_tip',
1766
"Called in bzr client and server after a change to the tip of a "
1767
"branch is made. post_change_branch_tip is called with a "
1768
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1769
"commit, uncommit will all trigger this hook.", (1, 4), None))
1770
self.create_hook(HookPoint('transform_fallback_location',
1771
"Called when a stacked branch is activating its fallback "
1772
"locations. transform_fallback_location is called with (branch, "
1773
"url), and should return a new url. Returning the same url "
1774
"allows it to be used as-is, returning a different one can be "
1775
"used to cause the branch to stack on a closer copy of that "
1776
"fallback_location. Note that the branch cannot have history "
1777
"accessing methods called on it during this hook because the "
1778
"fallback locations have not been activated. When there are "
1779
"multiple hooks installed for transform_fallback_location, "
1780
"all are called with the url returned from the previous hook."
1781
"The order is however undefined.", (1, 9), None))
1782
self.create_hook(HookPoint('automatic_tag_name',
1783
"Called to determine an automatic tag name for a revision."
1784
"automatic_tag_name is called with (branch, revision_id) and "
1785
"should return a tag name or None if no tag name could be "
1786
"determined. The first non-None tag name returned will be used.",
1788
self.create_hook(HookPoint('post_branch_init',
1789
"Called after new branch initialization completes. "
1790
"post_branch_init is called with a "
1791
"bzrlib.branch.BranchInitHookParams. "
1792
"Note that init, branch and checkout (both heavyweight and "
1793
"lightweight) will all trigger this hook.", (2, 2), None))
1794
self.create_hook(HookPoint('post_switch',
1795
"Called after a checkout switches branch. "
1796
"post_switch is called with a "
1797
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1003
# Introduced in 0.15:
1004
# invoked whenever the revision history has been set
1005
# with set_revision_history. The api signature is
1006
# (branch, revision_history), and the branch will
1009
# invoked after a push operation completes.
1010
# the api signature is
1012
# containing the members
1013
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1014
# where local is the local target branch or None, master is the target
1015
# master branch, and the rest should be self explanatory. The source
1016
# is read locked and the target branches write locked. Source will
1017
# be the local low-latency branch.
1018
self['post_push'] = []
1019
# invoked after a pull operation completes.
1020
# the api signature is
1022
# containing the members
1023
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1024
# where local is the local branch or None, master is the target
1025
# master branch, and the rest should be self explanatory. The source
1026
# is read locked and the target branches write locked. The local
1027
# branch is the low-latency branch.
1028
self['post_pull'] = []
1029
# invoked after a commit operation completes.
1030
# the api signature is
1031
# (local, master, old_revno, old_revid, new_revno, new_revid)
1032
# old_revid is NULL_REVISION for the first commit to a branch.
1033
self['post_commit'] = []
1034
# invoked after a uncommit operation completes.
1035
# the api signature is
1036
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1037
# local is the local branch or None, master is the target branch,
1038
# and an empty branch recieves new_revno of 0, new_revid of None.
1039
self['post_uncommit'] = []
1801
1042
# install the default hooks into the Branch class.
1802
1043
Branch.hooks = BranchHooks()
1805
class ChangeBranchTipParams(object):
1806
"""Object holding parameters passed to *_change_branch_tip hooks.
1808
There are 5 fields that hooks may wish to access:
1810
:ivar branch: the branch being changed
1811
:ivar old_revno: revision number before the change
1812
:ivar new_revno: revision number after the change
1813
:ivar old_revid: revision id before the change
1814
:ivar new_revid: revision id after the change
1816
The revid fields are strings. The revno fields are integers.
1819
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1820
"""Create a group of ChangeBranchTip parameters.
1822
:param branch: The branch being changed.
1823
:param old_revno: Revision number before the change.
1824
:param new_revno: Revision number after the change.
1825
:param old_revid: Tip revision id before the change.
1826
:param new_revid: Tip revision id after the change.
1828
self.branch = branch
1829
self.old_revno = old_revno
1830
self.new_revno = new_revno
1831
self.old_revid = old_revid
1832
self.new_revid = new_revid
1834
def __eq__(self, other):
1835
return self.__dict__ == other.__dict__
1838
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1839
self.__class__.__name__, self.branch,
1840
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1843
class BranchInitHookParams(object):
1844
"""Object holding parameters passed to *_branch_init hooks.
1846
There are 4 fields that hooks may wish to access:
1848
:ivar format: the branch format
1849
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1850
:ivar name: name of colocated branch, if any (or None)
1851
:ivar branch: the branch created
1853
Note that for lightweight checkouts, the bzrdir and format fields refer to
1854
the checkout, hence they are different from the corresponding fields in
1855
branch, which refer to the original branch.
1858
def __init__(self, format, a_bzrdir, name, branch):
1859
"""Create a group of BranchInitHook parameters.
1861
:param format: the branch format
1862
:param a_bzrdir: the BzrDir where the branch will be/has been
1864
:param name: name of colocated branch, if any (or None)
1865
:param branch: the branch created
1867
Note that for lightweight checkouts, the bzrdir and format fields refer
1868
to the checkout, hence they are different from the corresponding fields
1869
in branch, which refer to the original branch.
1871
self.format = format
1872
self.bzrdir = a_bzrdir
1874
self.branch = branch
1876
def __eq__(self, other):
1877
return self.__dict__ == other.__dict__
1881
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1883
return "<%s of format:%s bzrdir:%s>" % (
1884
self.__class__.__name__, self.branch,
1885
self.format, self.bzrdir)
1888
class SwitchHookParams(object):
1889
"""Object holding parameters passed to *_switch hooks.
1891
There are 4 fields that hooks may wish to access:
1893
:ivar control_dir: BzrDir of the checkout to change
1894
:ivar to_branch: branch that the checkout is to reference
1895
:ivar force: skip the check for local commits in a heavy checkout
1896
:ivar revision_id: revision ID to switch to (or None)
1899
def __init__(self, control_dir, to_branch, force, revision_id):
1900
"""Create a group of SwitchHook parameters.
1902
:param control_dir: BzrDir of the checkout to change
1903
:param to_branch: branch that the checkout is to reference
1904
:param force: skip the check for local commits in a heavy checkout
1905
:param revision_id: revision ID to switch to (or None)
1907
self.control_dir = control_dir
1908
self.to_branch = to_branch
1910
self.revision_id = revision_id
1912
def __eq__(self, other):
1913
return self.__dict__ == other.__dict__
1916
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1917
self.control_dir, self.to_branch,
1921
1046
class BzrBranchFormat4(BranchFormat):
1922
1047
"""Bzr branch format 4.
1930
1055
"""See BranchFormat.get_format_description()."""
1931
1056
return "Branch format 4"
1933
def initialize(self, a_bzrdir, name=None):
1058
def initialize(self, a_bzrdir):
1934
1059
"""Create a branch of this format in a_bzrdir."""
1935
1060
utf8_files = [('revision-history', ''),
1936
1061
('branch-name', ''),
1938
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1063
return self._initialize_helper(a_bzrdir, utf8_files,
1939
1064
lock_type='branch4', set_format=False)
1941
1066
def __init__(self):
1942
1067
super(BzrBranchFormat4, self).__init__()
1943
1068
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1945
def network_name(self):
1946
"""The network name for this format is the control dirs disk label."""
1947
return self._matchingbzrdir.get_format_string()
1070
def open(self, a_bzrdir, _found=False):
1071
"""Return the branch object for a_bzrdir
1949
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1950
"""See BranchFormat.open()."""
1073
_found is a private parameter, do not use it. It is used to indicate
1074
if format probing has already be done.
1952
1077
# we are being called directly and must probe.
1953
1078
raise NotImplementedError
1954
1079
return BzrBranch(_format=self,
1955
1080
_control_files=a_bzrdir._control_files,
1956
1081
a_bzrdir=a_bzrdir,
1958
1082
_repository=a_bzrdir.open_repository())
1960
1084
def __str__(self):
1961
1085
return "Bazaar-NG branch format 4"
1964
class BranchFormatMetadir(BranchFormat):
1965
"""Common logic for meta-dir based branch formats."""
1967
def _branch_class(self):
1968
"""What class to instantiate on open calls."""
1969
raise NotImplementedError(self._branch_class)
1971
def network_name(self):
1972
"""A simple byte string uniquely identifying this format for RPC calls.
1974
Metadir branch formats use their format string.
1088
class BzrBranchFormat5(BranchFormat):
1089
"""Bzr branch format 5.
1092
- a revision-history file.
1094
- a lock dir guarding the branch itself
1095
- all of this stored in a branch/ subdirectory
1096
- works with shared repositories.
1098
This format is new in bzr 0.8.
1101
def get_format_string(self):
1102
"""See BranchFormat.get_format_string()."""
1103
return "Bazaar-NG branch format 5\n"
1105
def get_format_description(self):
1106
"""See BranchFormat.get_format_description()."""
1107
return "Branch format 5"
1109
def initialize(self, a_bzrdir):
1110
"""Create a branch of this format in a_bzrdir."""
1111
utf8_files = [('revision-history', ''),
1112
('branch-name', ''),
1114
return self._initialize_helper(a_bzrdir, utf8_files)
1117
super(BzrBranchFormat5, self).__init__()
1118
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1120
def open(self, a_bzrdir, _found=False):
1121
"""Return the branch object for a_bzrdir
1123
_found is a private parameter, do not use it. It is used to indicate
1124
if format probing has already be done.
1976
return self.get_format_string()
1978
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1979
"""See BranchFormat.open()."""
1981
format = BranchFormat.find_format(a_bzrdir, name=name)
1982
if format.__class__ != self.__class__:
1983
raise AssertionError("wrong format %r found for %r" %
1985
transport = a_bzrdir.get_branch_transport(None, name=name)
1127
format = BranchFormat.find_format(a_bzrdir)
1128
assert format.__class__ == self.__class__
1130
transport = a_bzrdir.get_branch_transport(None)
1987
1131
control_files = lockable_files.LockableFiles(transport, 'lock',
1988
1132
lockdir.LockDir)
1989
return self._branch_class()(_format=self,
1133
return BzrBranch5(_format=self,
1990
1134
_control_files=control_files,
1992
1135
a_bzrdir=a_bzrdir,
1993
_repository=a_bzrdir.find_repository(),
1994
ignore_fallbacks=ignore_fallbacks)
1995
except errors.NoSuchFile:
1996
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1999
super(BranchFormatMetadir, self).__init__()
2000
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2001
self._matchingbzrdir.set_branch_format(self)
2003
def supports_tags(self):
2007
class BzrBranchFormat5(BranchFormatMetadir):
2008
"""Bzr branch format 5.
2011
- a revision-history file.
2013
- a lock dir guarding the branch itself
2014
- all of this stored in a branch/ subdirectory
2015
- works with shared repositories.
2017
This format is new in bzr 0.8.
2020
def _branch_class(self):
2023
def get_format_string(self):
2024
"""See BranchFormat.get_format_string()."""
2025
return "Bazaar-NG branch format 5\n"
2027
def get_format_description(self):
2028
"""See BranchFormat.get_format_description()."""
2029
return "Branch format 5"
2031
def initialize(self, a_bzrdir, name=None):
2032
"""Create a branch of this format in a_bzrdir."""
2033
utf8_files = [('revision-history', ''),
2034
('branch-name', ''),
2036
return self._initialize_helper(a_bzrdir, utf8_files, name)
2038
def supports_tags(self):
2042
class BzrBranchFormat6(BranchFormatMetadir):
2043
"""Branch format with last-revision and tags.
1136
_repository=a_bzrdir.find_repository())
1138
raise NotBranchError(path=transport.base)
1141
class BzrBranchFormat6(BzrBranchFormat5):
1142
"""Branch format with last-revision
2045
1144
Unlike previous formats, this has no explicit revision history. Instead,
2046
1145
this just stores the last-revision, and the left-hand history leading
2047
1146
up to there is the history.
2049
1148
This format was introduced in bzr 0.15
2050
and became the default in 0.91.
2053
def _branch_class(self):
2056
1151
def get_format_string(self):
2057
1152
"""See BranchFormat.get_format_string()."""
2058
1153
return "Bazaar Branch Format 6 (bzr 0.15)\n"
2061
1156
"""See BranchFormat.get_format_description()."""
2062
1157
return "Branch format 6"
2064
def initialize(self, a_bzrdir, name=None):
2065
"""Create a branch of this format in a_bzrdir."""
2066
utf8_files = [('last-revision', '0 null:\n'),
2067
('branch.conf', ''),
2070
return self._initialize_helper(a_bzrdir, utf8_files, name)
2072
def make_tags(self, branch):
2073
"""See bzrlib.branch.BranchFormat.make_tags()."""
2074
return BasicTags(branch)
2076
def supports_set_append_revisions_only(self):
2080
class BzrBranchFormat8(BranchFormatMetadir):
2081
"""Metadir format supporting storing locations of subtree branches."""
2083
def _branch_class(self):
2086
def get_format_string(self):
2087
"""See BranchFormat.get_format_string()."""
2088
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2090
def get_format_description(self):
2091
"""See BranchFormat.get_format_description()."""
2092
return "Branch format 8"
2094
def initialize(self, a_bzrdir, name=None):
2095
"""Create a branch of this format in a_bzrdir."""
2096
utf8_files = [('last-revision', '0 null:\n'),
2097
('branch.conf', ''),
2101
return self._initialize_helper(a_bzrdir, utf8_files, name)
2104
super(BzrBranchFormat8, self).__init__()
2105
self._matchingbzrdir.repository_format = \
2106
RepositoryFormatKnitPack5RichRoot()
2108
def make_tags(self, branch):
2109
"""See bzrlib.branch.BranchFormat.make_tags()."""
2110
return BasicTags(branch)
2112
def supports_set_append_revisions_only(self):
2115
def supports_stacking(self):
2118
supports_reference_locations = True
2121
class BzrBranchFormat7(BzrBranchFormat8):
2122
"""Branch format with last-revision, tags, and a stacked location pointer.
2124
The stacked location pointer is passed down to the repository and requires
2125
a repository format with supports_external_lookups = True.
2127
This format was introduced in bzr 1.6.
2130
def initialize(self, a_bzrdir, name=None):
2131
"""Create a branch of this format in a_bzrdir."""
2132
utf8_files = [('last-revision', '0 null:\n'),
2133
('branch.conf', ''),
2136
return self._initialize_helper(a_bzrdir, utf8_files, name)
2138
def _branch_class(self):
2141
def get_format_string(self):
2142
"""See BranchFormat.get_format_string()."""
2143
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2145
def get_format_description(self):
2146
"""See BranchFormat.get_format_description()."""
2147
return "Branch format 7"
2149
def supports_set_append_revisions_only(self):
2152
supports_reference_locations = False
1159
def initialize(self, a_bzrdir):
1160
"""Create a branch of this format in a_bzrdir."""
1161
utf8_files = [('last-revision', '0 null:\n'),
1162
('branch-name', ''),
1163
('branch.conf', ''),
1166
return self._initialize_helper(a_bzrdir, utf8_files)
1168
def open(self, a_bzrdir, _found=False):
1169
"""Return the branch object for a_bzrdir
1171
_found is a private parameter, do not use it. It is used to indicate
1172
if format probing has already be done.
1175
format = BranchFormat.find_format(a_bzrdir)
1176
assert format.__class__ == self.__class__
1177
transport = a_bzrdir.get_branch_transport(None)
1178
control_files = lockable_files.LockableFiles(transport, 'lock',
1180
return BzrBranch6(_format=self,
1181
_control_files=control_files,
1183
_repository=a_bzrdir.find_repository())
1185
def supports_tags(self):
2155
1189
class BranchReferenceFormat(BranchFormat):
2170
1204
def get_format_description(self):
2171
1205
"""See BranchFormat.get_format_description()."""
2172
1206
return "Checkout reference format 1"
2174
def get_reference(self, a_bzrdir, name=None):
1208
def get_reference(self, a_bzrdir):
2175
1209
"""See BranchFormat.get_reference()."""
2176
transport = a_bzrdir.get_branch_transport(None, name=name)
2177
return transport.get_bytes('location')
2179
def set_reference(self, a_bzrdir, name, to_branch):
2180
"""See BranchFormat.set_reference()."""
2181
transport = a_bzrdir.get_branch_transport(None, name=name)
2182
location = transport.put_bytes('location', to_branch.base)
2184
def initialize(self, a_bzrdir, name=None, target_branch=None):
1210
transport = a_bzrdir.get_branch_transport(None)
1211
return transport.get('location').read()
1213
def initialize(self, a_bzrdir, target_branch=None):
2185
1214
"""Create a branch of this format in a_bzrdir."""
2186
1215
if target_branch is None:
2187
1216
# this format does not implement branch itself, thus the implicit
2188
1217
# creation contract must see it as uninitializable
2189
1218
raise errors.UninitializableFormat(self)
2190
mutter('creating branch reference in %s', a_bzrdir.user_url)
2191
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1219
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1220
branch_transport = a_bzrdir.get_branch_transport(self)
2192
1221
branch_transport.put_bytes('location',
2193
target_branch.bzrdir.user_url)
1222
target_branch.bzrdir.root_transport.base)
2194
1223
branch_transport.put_bytes('format', self.get_format_string())
2196
a_bzrdir, name, _found=True,
2197
possible_transports=[target_branch.bzrdir.root_transport])
2198
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1224
return self.open(a_bzrdir, _found=True)
2201
1226
def __init__(self):
2202
1227
super(BranchReferenceFormat, self).__init__()
2203
1228
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2204
self._matchingbzrdir.set_branch_format(self)
2206
1230
def _make_reference_clone_function(format, a_branch):
2207
1231
"""Create a clone() routine for a branch dynamically."""
2208
def clone(to_bzrdir, revision_id=None,
2209
repository_policy=None):
1232
def clone(to_bzrdir, revision_id=None):
2210
1233
"""See Branch.clone()."""
2211
return format.initialize(to_bzrdir, target_branch=a_branch)
1234
return format.initialize(to_bzrdir, a_branch)
2212
1235
# cannot obey revision_id limits when cloning a reference ...
2213
1236
# FIXME RBC 20060210 either nuke revision_id for clone, or
2214
1237
# emit some sort of warning/error to the caller ?!
2217
def open(self, a_bzrdir, name=None, _found=False, location=None,
2218
possible_transports=None, ignore_fallbacks=False):
1240
def open(self, a_bzrdir, _found=False, location=None):
2219
1241
"""Return the branch that the branch reference in a_bzrdir points at.
2221
:param a_bzrdir: A BzrDir that contains a branch.
2222
:param name: Name of colocated branch to open, if any
2223
:param _found: a private parameter, do not use it. It is used to
2224
indicate if format probing has already be done.
2225
:param ignore_fallbacks: when set, no fallback branches will be opened
2226
(if there are any). Default is to open fallbacks.
2227
:param location: The location of the referenced branch. If
2228
unspecified, this will be determined from the branch reference in
2230
:param possible_transports: An optional reusable transports list.
1243
_found is a private parameter, do not use it. It is used to indicate
1244
if format probing has already be done.
2233
format = BranchFormat.find_format(a_bzrdir, name=name)
2234
if format.__class__ != self.__class__:
2235
raise AssertionError("wrong format %r found for %r" %
1247
format = BranchFormat.find_format(a_bzrdir)
1248
assert format.__class__ == self.__class__
2237
1249
if location is None:
2238
location = self.get_reference(a_bzrdir, name)
2239
real_bzrdir = bzrdir.BzrDir.open(
2240
location, possible_transports=possible_transports)
2241
result = real_bzrdir.open_branch(name=name,
2242
ignore_fallbacks=ignore_fallbacks)
1250
location = self.get_reference(a_bzrdir)
1251
real_bzrdir = bzrdir.BzrDir.open(location)
1252
result = real_bzrdir.open_branch()
2243
1253
# this changes the behaviour of result.clone to create a new reference
2244
1254
# rather than a copy of the content of the branch.
2245
1255
# I did not use a proxy object because that needs much more extensive
2255
network_format_registry = registry.FormatRegistry()
2256
"""Registry of formats indexed by their network name.
2258
The network name for a branch format is an identifier that can be used when
2259
referring to formats with smart server operations. See
2260
BranchFormat.network_name() for more detail.
2264
1265
# formats which have no format string are not discoverable
2265
1266
# and not independently creatable, so are not registered.
2266
__format5 = BzrBranchFormat5()
2267
__format6 = BzrBranchFormat6()
2268
__format7 = BzrBranchFormat7()
2269
__format8 = BzrBranchFormat8()
2270
BranchFormat.register_format(__format5)
1267
__default_format = BzrBranchFormat5()
1268
BranchFormat.register_format(__default_format)
2271
1269
BranchFormat.register_format(BranchReferenceFormat())
2272
BranchFormat.register_format(__format6)
2273
BranchFormat.register_format(__format7)
2274
BranchFormat.register_format(__format8)
2275
BranchFormat.set_default_format(__format7)
1270
BranchFormat.register_format(BzrBranchFormat6())
1271
BranchFormat.set_default_format(__default_format)
2276
1272
_legacy_formats = [BzrBranchFormat4(),
2278
network_format_registry.register(
2279
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2282
class BranchWriteLockResult(LogicalLockResult):
2283
"""The result of write locking a branch.
2285
:ivar branch_token: The token obtained from the underlying branch lock, or
2287
:ivar unlock: A callable which will unlock the lock.
2290
def __init__(self, unlock, branch_token):
2291
LogicalLockResult.__init__(self, unlock)
2292
self.branch_token = branch_token
2295
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2299
class BzrBranch(Branch, _RelockDebugMixin):
1275
class BzrBranch(Branch):
2300
1276
"""A branch stored in the actual filesystem.
2302
1278
Note that it's "local" in the context of the filesystem; it doesn't
2303
1279
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2304
1280
it's writable, and can be accessed via the normal filesystem API.
2306
:ivar _transport: Transport for file operations on this branch's
2307
control files, typically pointing to the .bzr/branch directory.
2308
:ivar repository: Repository for this branch.
2309
:ivar base: The url of the base directory for this branch; the one
2310
containing the .bzr directory.
2311
:ivar name: Optional colocated branch name as it exists in the control
2315
1283
def __init__(self, _format=None,
2316
_control_files=None, a_bzrdir=None, name=None,
2317
_repository=None, ignore_fallbacks=False):
1284
_control_files=None, a_bzrdir=None, _repository=None):
2318
1285
"""Create new branch object at a particular location."""
1286
Branch.__init__(self)
2319
1287
if a_bzrdir is None:
2320
1288
raise ValueError('a_bzrdir must be supplied')
2322
1290
self.bzrdir = a_bzrdir
1291
# self._transport used to point to the directory containing the
1292
# control directory, but was not used - now it's just the transport
1293
# for the branch control files. mbp 20070212
2323
1294
self._base = self.bzrdir.transport.clone('..').base
2325
# XXX: We should be able to just do
2326
# self.base = self.bzrdir.root_transport.base
2327
# but this does not quite work yet -- mbp 20080522
2328
1295
self._format = _format
2329
1296
if _control_files is None:
2330
1297
raise ValueError('BzrBranch _control_files is None')
2331
1298
self.control_files = _control_files
2332
1299
self._transport = _control_files._transport
2333
1300
self.repository = _repository
2334
Branch.__init__(self)
2336
1302
def __str__(self):
2337
if self.name is None:
2338
return '%s(%s)' % (self.__class__.__name__, self.user_url)
2340
return '%s(%s,%s)' % (self.__class__.__name__, self.user_url,
1303
return '%s(%r)' % (self.__class__.__name__, self.base)
2343
1305
__repr__ = __str__
2349
1311
base = property(_get_base, doc="The URL for the root of this branch.")
2351
def _get_config(self):
2352
return TransportConfig(self._transport, 'branch.conf')
1313
def abspath(self, name):
1314
"""See Branch.abspath."""
1315
return self.control_files._transport.abspath(name)
1318
@deprecated_method(zero_sixteen)
1320
def get_root_id(self):
1321
"""See Branch.get_root_id."""
1322
tree = self.repository.revision_tree(self.last_revision())
1323
return tree.inventory.root.file_id
2354
1325
def is_locked(self):
2355
1326
return self.control_files.is_locked()
2357
1328
def lock_write(self, token=None):
2358
"""Lock the branch for write operations.
2360
:param token: A token to permit reacquiring a previously held and
2362
:return: A BranchWriteLockResult.
2364
if not self.is_locked():
2365
self._note_lock('w')
2366
# All-in-one needs to always unlock/lock.
2367
repo_control = getattr(self.repository, 'control_files', None)
2368
if self.control_files == repo_control or not self.is_locked():
2369
self.repository._warn_if_deprecated(self)
2370
self.repository.lock_write()
1329
repo_token = self.repository.lock_write()
2375
return BranchWriteLockResult(self.unlock,
2376
self.control_files.lock_write(token=token))
1331
token = self.control_files.lock_write(token=token)
2379
self.repository.unlock()
1333
self.repository.unlock()
2382
1337
def lock_read(self):
2383
"""Lock the branch for read operations.
2385
:return: A bzrlib.lock.LogicalLockResult.
2387
if not self.is_locked():
2388
self._note_lock('r')
2389
# All-in-one needs to always unlock/lock.
2390
repo_control = getattr(self.repository, 'control_files', None)
2391
if self.control_files == repo_control or not self.is_locked():
2392
self.repository._warn_if_deprecated(self)
2393
self.repository.lock_read()
1338
self.repository.lock_read()
2398
1340
self.control_files.lock_read()
2399
return LogicalLockResult(self.unlock)
2402
self.repository.unlock()
1342
self.repository.unlock()
2405
@only_raises(errors.LockNotHeld, errors.LockBroken)
2406
1345
def unlock(self):
1346
# TODO: test for failed two phase locks. This is known broken.
2408
1348
self.control_files.unlock()
2410
# All-in-one needs to always unlock/lock.
2411
repo_control = getattr(self.repository, 'control_files', None)
2412
if (self.control_files == repo_control or
2413
not self.control_files.is_locked()):
2414
self.repository.unlock()
2415
if not self.control_files.is_locked():
2416
# we just released the lock
2417
self._clear_cached_state()
1350
self.repository.unlock()
1351
if not self.control_files.is_locked():
1352
# we just released the lock
1353
self._clear_cached_state()
2419
1355
def peek_lock_mode(self):
2420
1356
if self.control_files._lock_count == 0:
2430
1366
"""See Branch.print_file."""
2431
1367
return self.repository.print_file(file, revision_id)
1370
def append_revision(self, *revision_ids):
1371
"""See Branch.append_revision."""
1372
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1373
for revision_id in revision_ids:
1374
_mod_revision.check_not_reserved_id(revision_id)
1375
mutter("add {%s} to revision-history" % revision_id)
1376
rev_history = self.revision_history()
1377
rev_history.extend(revision_ids)
1378
self.set_revision_history(rev_history)
2433
1380
def _write_revision_history(self, history):
2434
1381
"""Factored out of set_revision_history.
2436
1383
This performs the actual writing to disk.
2437
1384
It is intended to be called by BzrBranch5.set_revision_history."""
2438
self._transport.put_bytes(
2439
'revision-history', '\n'.join(history),
2440
mode=self.bzrdir._get_file_mode())
1385
self.control_files.put_bytes(
1386
'revision-history', '\n'.join(history))
2442
1388
@needs_write_lock
2443
1389
def set_revision_history(self, rev_history):
2444
1390
"""See Branch.set_revision_history."""
2445
if 'evil' in debug.debug_flags:
2446
mutter_callsite(3, "set_revision_history scales with history.")
2447
check_not_reserved_id = _mod_revision.check_not_reserved_id
2448
for rev_id in rev_history:
2449
check_not_reserved_id(rev_id)
2450
if Branch.hooks['post_change_branch_tip']:
2451
# Don't calculate the last_revision_info() if there are no hooks
2453
old_revno, old_revid = self.last_revision_info()
2454
if len(rev_history) == 0:
2455
revid = _mod_revision.NULL_REVISION
2457
revid = rev_history[-1]
2458
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
1391
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1392
self._clear_cached_state()
2459
1393
self._write_revision_history(rev_history)
2460
self._clear_cached_state()
2461
1394
self._cache_revision_history(rev_history)
2462
1395
for hook in Branch.hooks['set_rh']:
2463
1396
hook(self, rev_history)
2464
if Branch.hooks['post_change_branch_tip']:
2465
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2467
def _synchronize_history(self, destination, revision_id):
2468
"""Synchronize last revision and revision history between branches.
2470
This version is most efficient when the destination is also a
2471
BzrBranch5, but works for BzrBranch6 as long as the revision
2472
history is the true lefthand parent history, and all of the revisions
2473
are in the destination's repository. If not, set_revision_history
2476
:param destination: The branch to copy the history into
2477
:param revision_id: The revision-id to truncate history at. May
2478
be None to copy complete history.
2480
if not isinstance(destination._format, BzrBranchFormat5):
2481
super(BzrBranch, self)._synchronize_history(
2482
destination, revision_id)
2484
if revision_id == _mod_revision.NULL_REVISION:
2487
new_history = self.revision_history()
2488
if revision_id is not None and new_history != []:
2490
new_history = new_history[:new_history.index(revision_id) + 1]
2492
rev = self.repository.get_revision(revision_id)
2493
new_history = rev.get_history(self.repository)[1:]
2494
destination.set_revision_history(new_history)
2496
1398
@needs_write_lock
2497
1399
def set_last_revision_info(self, revno, revision_id):
2498
"""Set the last revision of this branch.
2500
The caller is responsible for checking that the revno is correct
2501
for this revision id.
2503
It may be possible to set the branch last revision to an id not
2504
present in the repository. However, branches can also be
2505
configured to check constraints on history, in which case this may not
2508
revision_id = _mod_revision.ensure_null(revision_id)
2509
# this old format stores the full history, but this api doesn't
2510
# provide it, so we must generate, and might as well check it's
1400
revision_id = osutils.safe_revision_id(revision_id)
2512
1401
history = self._lefthand_history(revision_id)
2513
if len(history) != revno:
2514
raise AssertionError('%d != %d' % (len(history), revno))
1402
assert len(history) == revno, '%d != %d' % (len(history), revno)
2515
1403
self.set_revision_history(history)
2517
1405
def _gen_revision_history(self):
2518
history = self._transport.get_bytes('revision-history').split('\n')
1406
history = self.control_files.get('revision-history').read().split('\n')
2519
1407
if history[-1:] == ['']:
2520
1408
# There shouldn't be a trailing newline, but just in case.
1412
def _lefthand_history(self, revision_id, last_rev=None,
1414
# stop_revision must be a descendant of last_revision
1415
stop_graph = self.repository.get_revision_graph(revision_id)
1416
if (last_rev is not None and last_rev != _mod_revision.NULL_REVISION
1417
and last_rev not in stop_graph):
1418
# our previous tip is not merged into stop_revision
1419
raise errors.DivergedBranches(self, other_branch)
1420
# make a new revision history from the graph
1421
current_rev_id = revision_id
1423
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1424
new_history.append(current_rev_id)
1425
current_rev_id_parents = stop_graph[current_rev_id]
1427
current_rev_id = current_rev_id_parents[0]
1429
current_rev_id = None
1430
new_history.reverse()
2524
1433
@needs_write_lock
2525
1434
def generate_revision_history(self, revision_id, last_rev=None,
2526
1435
other_branch=None):
2532
1441
:param other_branch: The other branch that DivergedBranches should
2533
1442
raise with respect to.
1444
revision_id = osutils.safe_revision_id(revision_id)
2535
1445
self.set_revision_history(self._lefthand_history(revision_id,
2536
1446
last_rev, other_branch))
1449
def update_revisions(self, other, stop_revision=None):
1450
"""See Branch.update_revisions."""
1453
if stop_revision is None:
1454
stop_revision = other.last_revision()
1455
if stop_revision is None:
1456
# if there are no commits, we're done.
1459
stop_revision = osutils.safe_revision_id(stop_revision)
1460
# whats the current last revision, before we fetch [and change it
1462
last_rev = _mod_revision.ensure_null(self.last_revision())
1463
# we fetch here regardless of whether we need to so that we pickup
1465
self.fetch(other, stop_revision)
1466
if self.repository.get_graph().is_ancestor(stop_revision,
1469
self.generate_revision_history(stop_revision, last_rev=last_rev,
2538
1474
def basis_tree(self):
2539
1475
"""See Branch.basis_tree."""
2540
1476
return self.repository.revision_tree(self.last_revision())
1478
@deprecated_method(zero_eight)
1479
def working_tree(self):
1480
"""Create a Working tree object for this branch."""
1482
from bzrlib.transport.local import LocalTransport
1483
if (self.base.find('://') != -1 or
1484
not isinstance(self._transport, LocalTransport)):
1485
raise NoWorkingTree(self.base)
1486
return self.bzrdir.open_workingtree()
1489
def pull(self, source, overwrite=False, stop_revision=None,
1490
_hook_master=None, run_hooks=True):
1493
:param _hook_master: Private parameter - set the branch to
1494
be supplied as the master to push hooks.
1495
:param run_hooks: Private parameter - if false, this branch
1496
is being called because it's the master of the primary branch,
1497
so it should not run its hooks.
1499
result = PullResult()
1500
result.source_branch = source
1501
result.target_branch = self
1504
result.old_revno, result.old_revid = self.last_revision_info()
1506
self.update_revisions(source, stop_revision)
1507
except DivergedBranches:
1511
if stop_revision is None:
1512
stop_revision = source.last_revision()
1513
self.generate_revision_history(stop_revision)
1514
result.tag_conflicts = source.tags.merge_to(self.tags)
1515
result.new_revno, result.new_revid = self.last_revision_info()
1517
result.master_branch = _hook_master
1518
result.local_branch = self
1520
result.master_branch = self
1521
result.local_branch = None
1523
for hook in Branch.hooks['post_pull']:
2542
1529
def _get_parent_location(self):
2543
1530
_locs = ['parent', 'pull', 'x-pull']
2544
1531
for l in _locs:
2546
return self._transport.get_bytes(l).strip('\n')
2547
except errors.NoSuchFile:
1533
return self.control_files.get(l).read().strip('\n')
1539
def push(self, target, overwrite=False, stop_revision=None,
1540
_override_hook_source_branch=None):
1543
This is the basic concrete implementation of push()
1545
:param _override_hook_source_branch: If specified, run
1546
the hooks passing this Branch as the source, rather than self.
1547
This is for use of RemoteBranch, where push is delegated to the
1548
underlying vfs-based Branch.
1550
# TODO: Public option to disable running hooks - should be trivial but
1554
result = self._push_with_bound_branches(target, overwrite,
1556
_override_hook_source_branch=_override_hook_source_branch)
1561
def _push_with_bound_branches(self, target, overwrite,
1563
_override_hook_source_branch=None):
1564
"""Push from self into target, and into target's master if any.
1566
This is on the base BzrBranch class even though it doesn't support
1567
bound branches because the *target* might be bound.
1570
if _override_hook_source_branch:
1571
result.source_branch = _override_hook_source_branch
1572
for hook in Branch.hooks['post_push']:
1575
bound_location = target.get_bound_location()
1576
if bound_location and target.base != bound_location:
1577
# there is a master branch.
1579
# XXX: Why the second check? Is it even supported for a branch to
1580
# be bound to itself? -- mbp 20070507
1581
master_branch = target.get_master_branch()
1582
master_branch.lock_write()
1584
# push into the master from this branch.
1585
self._basic_push(master_branch, overwrite, stop_revision)
1586
# and push into the target branch from this. Note that we push from
1587
# this branch again, because its considered the highest bandwidth
1589
result = self._basic_push(target, overwrite, stop_revision)
1590
result.master_branch = master_branch
1591
result.local_branch = target
1595
master_branch.unlock()
1598
result = self._basic_push(target, overwrite, stop_revision)
1599
# TODO: Why set master_branch and local_branch if there's no
1600
# binding? Maybe cleaner to just leave them unset? -- mbp
1602
result.master_branch = target
1603
result.local_branch = None
2551
1607
def _basic_push(self, target, overwrite, stop_revision):
2552
1608
"""Basic implementation of push without bound branches or hooks.
2554
Must be called with source read locked and target write locked.
1610
Must be called with self read locked and target write locked.
2556
result = BranchPushResult()
1612
result = PushResult()
2557
1613
result.source_branch = self
2558
1614
result.target_branch = target
2559
1615
result.old_revno, result.old_revid = target.last_revision_info()
2560
self.update_references(target)
2561
if result.old_revid != self.last_revision():
2562
# We assume that during 'push' this repository is closer than
2564
graph = self.repository.get_graph(target.repository)
2565
target.update_revisions(self, stop_revision,
2566
overwrite=overwrite, graph=graph)
2567
if self._push_should_merge_tags():
2568
result.tag_conflicts = self.tags.merge_to(target.tags,
1617
target.update_revisions(self, stop_revision)
1618
except DivergedBranches:
1622
target.set_revision_history(self.revision_history())
1623
result.tag_conflicts = self.tags.merge_to(target.tags)
2570
1624
result.new_revno, result.new_revid = target.last_revision_info()
2573
def get_stacked_on_url(self):
2574
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1627
def get_parent(self):
1628
"""See Branch.get_parent."""
1630
assert self.base[-1] == '/'
1631
parent = self._get_parent_location()
1634
# This is an old-format absolute path to a local branch
1635
# turn it into a url
1636
if parent.startswith('/'):
1637
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1639
return urlutils.join(self.base[:-1], parent)
1640
except errors.InvalidURLJoin, e:
1641
raise errors.InaccessibleParent(parent, self.base)
2576
1643
def set_push_location(self, location):
2577
1644
"""See Branch.set_push_location."""
2579
1646
'push_location', location,
2580
1647
store=_mod_config.STORE_LOCATION_NORECURSE)
1650
def set_parent(self, url):
1651
"""See Branch.set_parent."""
1652
# TODO: Maybe delete old location files?
1653
# URLs should never be unicode, even on the local fs,
1654
# FIXUP this and get_parent in a future branch format bump:
1655
# read and rewrite the file, and have the new format code read
1656
# using .get not .get_utf8. RBC 20060125
1658
if isinstance(url, unicode):
1660
url = url.encode('ascii')
1661
except UnicodeEncodeError:
1662
raise errors.InvalidURL(url,
1663
"Urls must be 7-bit ascii, "
1664
"use bzrlib.urlutils.escape")
1665
url = urlutils.relative_url(self.base, url)
1666
self._set_parent_location(url)
2582
1668
def _set_parent_location(self, url):
2583
1669
if url is None:
2584
self._transport.delete('parent')
1670
self.control_files._transport.delete('parent')
2586
self._transport.put_bytes('parent', url + '\n',
2587
mode=self.bzrdir._get_file_mode())
1672
assert isinstance(url, str)
1673
self.control_files.put_bytes('parent', url + '\n')
1675
@deprecated_function(zero_nine)
1676
def tree_config(self):
1677
"""DEPRECATED; call get_config instead.
1678
TreeConfig has become part of BranchConfig."""
1679
return TreeConfig(self)
2590
1682
class BzrBranch5(BzrBranch):
2591
"""A format 5 branch. This supports new features over plain branches.
1683
"""A format 5 branch. This supports new features over plan branches.
2593
1685
It has support for a master_branch which is the data for bound branches.
1693
super(BzrBranch5, self).__init__(_format=_format,
1694
_control_files=_control_files,
1696
_repository=_repository)
1699
def pull(self, source, overwrite=False, stop_revision=None,
1701
"""Pull from source into self, updating my master if any.
1703
:param run_hooks: Private parameter - if false, this branch
1704
is being called because it's the master of the primary branch,
1705
so it should not run its hooks.
1707
bound_location = self.get_bound_location()
1708
master_branch = None
1709
if bound_location and source.base != bound_location:
1710
# not pulling from master, so we need to update master.
1711
master_branch = self.get_master_branch()
1712
master_branch.lock_write()
1715
# pull from source into master.
1716
master_branch.pull(source, overwrite, stop_revision,
1718
return super(BzrBranch5, self).pull(source, overwrite,
1719
stop_revision, _hook_master=master_branch,
1720
run_hooks=run_hooks)
1723
master_branch.unlock()
2596
1725
def get_bound_location(self):
2598
return self._transport.get_bytes('bound')[:-1]
1727
return self.control_files.get_utf8('bound').read()[:-1]
2599
1728
except errors.NoSuchFile:
2602
1731
@needs_read_lock
2603
def get_master_branch(self, possible_transports=None):
1732
def get_master_branch(self):
2604
1733
"""Return the branch we are bound to.
2606
1735
:return: Either a Branch, or None
2608
1737
This could memoise the branch, but if thats done
2688
class BzrBranch8(BzrBranch5):
2689
"""A branch that stores tree-reference locations."""
2691
def _open_hook(self):
2692
if self._ignore_fallbacks:
1831
class BzrBranchExperimental(BzrBranch5):
1832
"""Bzr experimental branch format
1835
- a revision-history file.
1837
- a lock dir guarding the branch itself
1838
- all of this stored in a branch/ subdirectory
1839
- works with shared repositories.
1840
- a tag dictionary in the branch
1842
This format is new in bzr 0.15, but shouldn't be used for real data,
1845
This class acts as it's own BranchFormat.
1848
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1851
def get_format_string(cls):
1852
"""See BranchFormat.get_format_string()."""
1853
return "Bazaar-NG branch format experimental\n"
1856
def get_format_description(cls):
1857
"""See BranchFormat.get_format_description()."""
1858
return "Experimental branch format"
1861
def get_reference(cls, a_bzrdir):
1862
"""Get the target reference of the branch in a_bzrdir.
1864
format probing must have been completed before calling
1865
this method - it is assumed that the format of the branch
1866
in a_bzrdir is correct.
1868
:param a_bzrdir: The bzrdir to get the branch data from.
1869
:return: None if the branch is not a reference branch.
1874
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1876
branch_transport = a_bzrdir.get_branch_transport(cls)
1877
control_files = lockable_files.LockableFiles(branch_transport,
1878
lock_filename, lock_class)
1879
control_files.create_lock()
1880
control_files.lock_write()
2695
url = self.get_stacked_on_url()
2696
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2697
errors.UnstackableBranchFormat):
2700
for hook in Branch.hooks['transform_fallback_location']:
2701
url = hook(self, url)
2703
hook_name = Branch.hooks.get_hook_name(hook)
2704
raise AssertionError(
2705
"'transform_fallback_location' hook %s returned "
2706
"None, not a URL." % hook_name)
2707
self._activate_fallback_location(url)
2709
def __init__(self, *args, **kwargs):
2710
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2711
super(BzrBranch8, self).__init__(*args, **kwargs)
2712
self._last_revision_info_cache = None
2713
self._reference_info = None
2715
def _clear_cached_state(self):
2716
super(BzrBranch8, self)._clear_cached_state()
2717
self._last_revision_info_cache = None
2718
self._reference_info = None
2720
def _last_revision_info(self):
2721
revision_string = self._transport.get_bytes('last-revision')
1882
for filename, content in utf8_files:
1883
control_files.put_utf8(filename, content)
1885
control_files.unlock()
1888
def initialize(cls, a_bzrdir):
1889
"""Create a branch of this format in a_bzrdir."""
1890
utf8_files = [('format', cls.get_format_string()),
1891
('revision-history', ''),
1892
('branch-name', ''),
1895
cls._initialize_control_files(a_bzrdir, utf8_files,
1896
'lock', lockdir.LockDir)
1897
return cls.open(a_bzrdir, _found=True)
1900
def open(cls, a_bzrdir, _found=False):
1901
"""Return the branch object for a_bzrdir
1903
_found is a private parameter, do not use it. It is used to indicate
1904
if format probing has already be done.
1907
format = BranchFormat.find_format(a_bzrdir)
1908
assert format.__class__ == cls
1909
transport = a_bzrdir.get_branch_transport(None)
1910
control_files = lockable_files.LockableFiles(transport, 'lock',
1912
return cls(_format=cls,
1913
_control_files=control_files,
1915
_repository=a_bzrdir.find_repository())
1918
def is_supported(cls):
1921
def _make_tags(self):
1922
return BasicTags(self)
1925
def supports_tags(cls):
1929
BranchFormat.register_format(BzrBranchExperimental)
1932
class BzrBranch6(BzrBranch5):
1935
def last_revision_info(self):
1936
revision_string = self.control_files.get('last-revision').read()
2722
1937
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2723
1938
revision_id = cache_utf8.get_cached_utf8(revision_id)
2724
1939
revno = int(revno)
2725
1940
return revno, revision_id
1942
def last_revision(self):
1943
"""Return last revision id, or None"""
1944
revision_id = self.last_revision_info()[1]
1945
if revision_id == _mod_revision.NULL_REVISION:
2727
1949
def _write_last_revision_info(self, revno, revision_id):
2728
1950
"""Simply write out the revision id, with no checks.
2733
1955
Intended to be called by set_last_revision_info and
2734
1956
_write_revision_history.
2736
revision_id = _mod_revision.ensure_null(revision_id)
1958
if revision_id is None:
1959
revision_id = 'null:'
2737
1960
out_string = '%d %s\n' % (revno, revision_id)
2738
self._transport.put_bytes('last-revision', out_string,
2739
mode=self.bzrdir._get_file_mode())
1961
self.control_files.put_bytes('last-revision', out_string)
2741
1963
@needs_write_lock
2742
1964
def set_last_revision_info(self, revno, revision_id):
2743
revision_id = _mod_revision.ensure_null(revision_id)
2744
old_revno, old_revid = self.last_revision_info()
1965
revision_id = osutils.safe_revision_id(revision_id)
2745
1966
if self._get_append_revisions_only():
2746
1967
self._check_history_violation(revision_id)
2747
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2748
1968
self._write_last_revision_info(revno, revision_id)
2749
1969
self._clear_cached_state()
2750
self._last_revision_info_cache = revno, revision_id
2751
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2753
def _synchronize_history(self, destination, revision_id):
2754
"""Synchronize last revision and revision history between branches.
2756
:see: Branch._synchronize_history
2758
# XXX: The base Branch has a fast implementation of this method based
2759
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2760
# that uses set_revision_history. This class inherits from BzrBranch5,
2761
# but wants the fast implementation, so it calls
2762
# Branch._synchronize_history directly.
2763
Branch._synchronize_history(self, destination, revision_id)
2765
1971
def _check_history_violation(self, revision_id):
2766
1972
last_revision = _mod_revision.ensure_null(self.last_revision())
2767
1973
if _mod_revision.is_null(last_revision):
2769
1975
if last_revision not in self._lefthand_history(revision_id):
2770
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1976
raise errors.AppendRevisionsOnlyViolation(self.base)
2772
1978
def _gen_revision_history(self):
2773
1979
"""Generate the revision history from last revision
2775
last_revno, last_revision = self.last_revision_info()
2776
self._extend_partial_history(stop_index=last_revno-1)
2777
return list(reversed(self._partial_revision_history_cache))
1981
history = list(self.repository.iter_reverse_revision_history(
1982
self.last_revision()))
2779
1986
def _write_revision_history(self, history):
2780
1987
"""Factored out of set_revision_history.
2802
2028
"""Set the parent branch"""
2803
2029
return self._get_config_location('parent_location')
2806
def _set_all_reference_info(self, info_dict):
2807
"""Replace all reference info stored in a branch.
2809
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2812
writer = rio.RioWriter(s)
2813
for key, (tree_path, branch_location) in info_dict.iteritems():
2814
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2815
branch_location=branch_location)
2816
writer.write_stanza(stanza)
2817
self._transport.put_bytes('references', s.getvalue())
2818
self._reference_info = info_dict
2821
def _get_all_reference_info(self):
2822
"""Return all the reference info stored in a branch.
2824
:return: A dict of {file_id: (tree_path, branch_location)}
2826
if self._reference_info is not None:
2827
return self._reference_info
2828
rio_file = self._transport.get('references')
2830
stanzas = rio.read_stanzas(rio_file)
2831
info_dict = dict((s['file_id'], (s['tree_path'],
2832
s['branch_location'])) for s in stanzas)
2835
self._reference_info = info_dict
2838
def set_reference_info(self, file_id, tree_path, branch_location):
2839
"""Set the branch location to use for a tree reference.
2841
:param file_id: The file-id of the tree reference.
2842
:param tree_path: The path of the tree reference in the tree.
2843
:param branch_location: The location of the branch to retrieve tree
2846
info_dict = self._get_all_reference_info()
2847
info_dict[file_id] = (tree_path, branch_location)
2848
if None in (tree_path, branch_location):
2849
if tree_path is not None:
2850
raise ValueError('tree_path must be None when branch_location'
2852
if branch_location is not None:
2853
raise ValueError('branch_location must be None when tree_path'
2855
del info_dict[file_id]
2856
self._set_all_reference_info(info_dict)
2858
def get_reference_info(self, file_id):
2859
"""Get the tree_path and branch_location for a tree reference.
2861
:return: a tuple of (tree_path, branch_location)
2863
return self._get_all_reference_info().get(file_id, (None, None))
2865
def reference_parent(self, file_id, path, possible_transports=None):
2866
"""Return the parent branch for a tree-reference file_id.
2868
:param file_id: The file_id of the tree reference
2869
:param path: The path of the file_id in the tree
2870
:return: A branch associated with the file_id
2872
branch_location = self.get_reference_info(file_id)[1]
2873
if branch_location is None:
2874
return Branch.reference_parent(self, file_id, path,
2875
possible_transports)
2876
branch_location = urlutils.join(self.user_url, branch_location)
2877
return Branch.open(branch_location,
2878
possible_transports=possible_transports)
2880
2031
def set_push_location(self, location):
2881
2032
"""See Branch.set_push_location."""
2882
2033
self._set_config_location('push_location', location)
2915
2066
"""See Branch.get_old_bound_location"""
2916
2067
return self._get_bound_location(False)
2918
def get_stacked_on_url(self):
2919
# you can always ask for the URL; but you might not be able to use it
2920
# if the repo can't support stacking.
2921
## self._check_stackable_repo()
2922
stacked_url = self._get_config_location('stacked_on_location')
2923
if stacked_url is None:
2924
raise errors.NotStacked(self)
2069
def set_append_revisions_only(self, enabled):
2074
self.get_config().set_user_option('append_revisions_only', value,
2927
2077
def _get_append_revisions_only(self):
2928
return self.get_config(
2929
).get_user_option_as_bool('append_revisions_only')
2932
def generate_revision_history(self, revision_id, last_rev=None,
2934
"""See BzrBranch5.generate_revision_history"""
2935
history = self._lefthand_history(revision_id, last_rev, other_branch)
2936
revno = len(history)
2937
self.set_last_revision_info(revno, revision_id)
2940
def get_rev_id(self, revno, history=None):
2941
"""Find the revision id of the specified revno."""
2943
return _mod_revision.NULL_REVISION
2945
last_revno, last_revision_id = self.last_revision_info()
2946
if revno <= 0 or revno > last_revno:
2947
raise errors.NoSuchRevision(self, revno)
2949
if history is not None:
2950
return history[revno - 1]
2952
index = last_revno - revno
2953
if len(self._partial_revision_history_cache) <= index:
2954
self._extend_partial_history(stop_index=index)
2955
if len(self._partial_revision_history_cache) > index:
2956
return self._partial_revision_history_cache[index]
2078
value = self.get_config().get_user_option('append_revisions_only')
2079
return value == 'True'
2081
def _synchronize_history(self, destination, revision_id):
2082
"""Synchronize last revision and revision history between branches.
2084
This version is most efficient when the destination is also a
2085
BzrBranch6, but works for BzrBranch5, as long as the destination's
2086
repository contains all the lefthand ancestors of the intended
2087
last_revision. If not, set_last_revision_info will fail.
2089
:param destination: The branch to copy the history into
2090
:param revision_id: The revision-id to truncate history at. May
2091
be None to copy complete history.
2093
if revision_id is None:
2094
revno, revision_id = self.last_revision_info()
2958
raise errors.NoSuchRevision(self, revno)
2961
def revision_id_to_revno(self, revision_id):
2962
"""Given a revision id, return its revno"""
2963
if _mod_revision.is_null(revision_id):
2966
index = self._partial_revision_history_cache.index(revision_id)
2968
self._extend_partial_history(stop_revision=revision_id)
2969
index = len(self._partial_revision_history_cache) - 1
2970
if self._partial_revision_history_cache[index] != revision_id:
2971
raise errors.NoSuchRevision(self, revision_id)
2972
return self.revno() - index
2975
class BzrBranch7(BzrBranch8):
2976
"""A branch with support for a fallback repository."""
2978
def set_reference_info(self, file_id, tree_path, branch_location):
2979
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2981
def get_reference_info(self, file_id):
2982
Branch.get_reference_info(self, file_id)
2984
def reference_parent(self, file_id, path, possible_transports=None):
2985
return Branch.reference_parent(self, file_id, path,
2986
possible_transports)
2989
class BzrBranch6(BzrBranch7):
2990
"""See BzrBranchFormat6 for the capabilities of this branch.
2992
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2996
def get_stacked_on_url(self):
2997
raise errors.UnstackableBranchFormat(self._format, self.user_url)
2096
# To figure out the revno for a random revision, we need to build
2097
# the revision history, and count its length.
2098
# We don't care about the order, just how long it is.
2099
# Alternatively, we could start at the current location, and count
2100
# backwards. But there is no guarantee that we will find it since
2101
# it may be a merged revision.
2102
revno = len(list(self.repository.iter_reverse_revision_history(
2104
destination.set_last_revision_info(revno, revision_id)
2106
def _make_tags(self):
2107
return BasicTags(self)
3000
2110
######################################################################
3111
2208
new_branch.tags._set_tag_dict({})
3113
2210
# Copying done; now update target format
3114
new_branch._transport.put_bytes('format',
3115
format.get_format_string(),
3116
mode=new_branch.bzrdir._get_file_mode())
2211
new_branch.control_files.put_utf8('format',
2212
format.get_format_string())
3118
2214
# Clean up old files
3119
new_branch._transport.delete('revision-history')
2215
new_branch.control_files._transport.delete('revision-history')
3121
2217
branch.set_parent(None)
3122
except errors.NoSuchFile:
3124
2220
branch.set_bound_location(None)
3127
class Converter6to7(object):
3128
"""Perform an in-place upgrade of format 6 to format 7"""
3130
def convert(self, branch):
3131
format = BzrBranchFormat7()
3132
branch._set_config_location('stacked_on_location', '')
3133
# update target format
3134
branch._transport.put_bytes('format', format.get_format_string())
3137
class Converter7to8(object):
3138
"""Perform an in-place upgrade of format 6 to format 7"""
3140
def convert(self, branch):
3141
format = BzrBranchFormat8()
3142
branch._transport.put_bytes('references', '')
3143
# update target format
3144
branch._transport.put_bytes('format', format.get_format_string())
3147
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3148
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3151
_run_with_write_locked_target will attempt to release the lock it acquires.
3153
If an exception is raised by callable, then that exception *will* be
3154
propagated, even if the unlock attempt raises its own error. Thus
3155
_run_with_write_locked_target should be preferred to simply doing::
3159
return callable(*args, **kwargs)
3164
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3165
# should share code?
3168
result = callable(*args, **kwargs)
3170
exc_info = sys.exc_info()
3174
raise exc_info[0], exc_info[1], exc_info[2]
3180
class InterBranch(InterObject):
3181
"""This class represents operations taking place between two branches.
3183
Its instances have methods like pull() and push() and contain
3184
references to the source and target repositories these operations
3185
can be carried out on.
3189
"""The available optimised InterBranch types."""
3192
def _get_branch_formats_to_test():
3193
"""Return a tuple with the Branch formats to use when testing."""
3194
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3196
def pull(self, overwrite=False, stop_revision=None,
3197
possible_transports=None, local=False):
3198
"""Mirror source into target branch.
3200
The target branch is considered to be 'local', having low latency.
3202
:returns: PullResult instance
3204
raise NotImplementedError(self.pull)
3206
def update_revisions(self, stop_revision=None, overwrite=False,
3208
"""Pull in new perfect-fit revisions.
3210
:param stop_revision: Updated until the given revision
3211
:param overwrite: Always set the branch pointer, rather than checking
3212
to see if it is a proper descendant.
3213
:param graph: A Graph object that can be used to query history
3214
information. This can be None.
3217
raise NotImplementedError(self.update_revisions)
3219
def push(self, overwrite=False, stop_revision=None,
3220
_override_hook_source_branch=None):
3221
"""Mirror the source branch into the target branch.
3223
The source branch is considered to be 'local', having low latency.
3225
raise NotImplementedError(self.push)
3228
class GenericInterBranch(InterBranch):
3229
"""InterBranch implementation that uses public Branch functions.
3233
def _get_branch_formats_to_test():
3234
return BranchFormat._default_format, BranchFormat._default_format
3236
def update_revisions(self, stop_revision=None, overwrite=False,
3238
"""See InterBranch.update_revisions()."""
3239
self.source.lock_read()
3241
other_revno, other_last_revision = self.source.last_revision_info()
3242
stop_revno = None # unknown
3243
if stop_revision is None:
3244
stop_revision = other_last_revision
3245
if _mod_revision.is_null(stop_revision):
3246
# if there are no commits, we're done.
3248
stop_revno = other_revno
3250
# what's the current last revision, before we fetch [and change it
3252
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3253
# we fetch here so that we don't process data twice in the common
3254
# case of having something to pull, and so that the check for
3255
# already merged can operate on the just fetched graph, which will
3256
# be cached in memory.
3257
self.target.fetch(self.source, stop_revision)
3258
# Check to see if one is an ancestor of the other
3261
graph = self.target.repository.get_graph()
3262
if self.target._check_if_descendant_or_diverged(
3263
stop_revision, last_rev, graph, self.source):
3264
# stop_revision is a descendant of last_rev, but we aren't
3265
# overwriting, so we're done.
3267
if stop_revno is None:
3269
graph = self.target.repository.get_graph()
3270
this_revno, this_last_revision = \
3271
self.target.last_revision_info()
3272
stop_revno = graph.find_distance_to_null(stop_revision,
3273
[(other_last_revision, other_revno),
3274
(this_last_revision, this_revno)])
3275
self.target.set_last_revision_info(stop_revno, stop_revision)
3277
self.source.unlock()
3279
def pull(self, overwrite=False, stop_revision=None,
3280
possible_transports=None, _hook_master=None, run_hooks=True,
3281
_override_hook_target=None, local=False):
3284
:param _hook_master: Private parameter - set the branch to
3285
be supplied as the master to pull hooks.
3286
:param run_hooks: Private parameter - if false, this branch
3287
is being called because it's the master of the primary branch,
3288
so it should not run its hooks.
3289
:param _override_hook_target: Private parameter - set the branch to be
3290
supplied as the target_branch to pull hooks.
3291
:param local: Only update the local branch, and not the bound branch.
3293
# This type of branch can't be bound.
3295
raise errors.LocalRequiresBoundBranch()
3296
result = PullResult()
3297
result.source_branch = self.source
3298
if _override_hook_target is None:
3299
result.target_branch = self.target
3301
result.target_branch = _override_hook_target
3302
self.source.lock_read()
3304
# We assume that during 'pull' the target repository is closer than
3306
self.source.update_references(self.target)
3307
graph = self.target.repository.get_graph(self.source.repository)
3308
# TODO: Branch formats should have a flag that indicates
3309
# that revno's are expensive, and pull() should honor that flag.
3311
result.old_revno, result.old_revid = \
3312
self.target.last_revision_info()
3313
self.target.update_revisions(self.source, stop_revision,
3314
overwrite=overwrite, graph=graph)
3315
# TODO: The old revid should be specified when merging tags,
3316
# so a tags implementation that versions tags can only
3317
# pull in the most recent changes. -- JRV20090506
3318
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3320
result.new_revno, result.new_revid = self.target.last_revision_info()
3322
result.master_branch = _hook_master
3323
result.local_branch = result.target_branch
3325
result.master_branch = result.target_branch
3326
result.local_branch = None
3328
for hook in Branch.hooks['post_pull']:
3331
self.source.unlock()
3334
def push(self, overwrite=False, stop_revision=None,
3335
_override_hook_source_branch=None):
3336
"""See InterBranch.push.
3338
This is the basic concrete implementation of push()
3340
:param _override_hook_source_branch: If specified, run
3341
the hooks passing this Branch as the source, rather than self.
3342
This is for use of RemoteBranch, where push is delegated to the
3343
underlying vfs-based Branch.
3345
# TODO: Public option to disable running hooks - should be trivial but
3347
self.source.lock_read()
3349
return _run_with_write_locked_target(
3350
self.target, self._push_with_bound_branches, overwrite,
3352
_override_hook_source_branch=_override_hook_source_branch)
3354
self.source.unlock()
3356
def _push_with_bound_branches(self, overwrite, stop_revision,
3357
_override_hook_source_branch=None):
3358
"""Push from source into target, and into target's master if any.
3361
if _override_hook_source_branch:
3362
result.source_branch = _override_hook_source_branch
3363
for hook in Branch.hooks['post_push']:
3366
bound_location = self.target.get_bound_location()
3367
if bound_location and self.target.base != bound_location:
3368
# there is a master branch.
3370
# XXX: Why the second check? Is it even supported for a branch to
3371
# be bound to itself? -- mbp 20070507
3372
master_branch = self.target.get_master_branch()
3373
master_branch.lock_write()
3375
# push into the master from the source branch.
3376
self.source._basic_push(master_branch, overwrite, stop_revision)
3377
# and push into the target branch from the source. Note that we
3378
# push from the source branch again, because its considered the
3379
# highest bandwidth repository.
3380
result = self.source._basic_push(self.target, overwrite,
3382
result.master_branch = master_branch
3383
result.local_branch = self.target
3387
master_branch.unlock()
3390
result = self.source._basic_push(self.target, overwrite,
3392
# TODO: Why set master_branch and local_branch if there's no
3393
# binding? Maybe cleaner to just leave them unset? -- mbp
3395
result.master_branch = self.target
3396
result.local_branch = None
3401
def is_compatible(self, source, target):
3402
# GenericBranch uses the public API, so always compatible
3406
class InterToBranch5(GenericInterBranch):
3409
def _get_branch_formats_to_test():
3410
return BranchFormat._default_format, BzrBranchFormat5()
3412
def pull(self, overwrite=False, stop_revision=None,
3413
possible_transports=None, run_hooks=True,
3414
_override_hook_target=None, local=False):
3415
"""Pull from source into self, updating my master if any.
3417
:param run_hooks: Private parameter - if false, this branch
3418
is being called because it's the master of the primary branch,
3419
so it should not run its hooks.
3421
bound_location = self.target.get_bound_location()
3422
if local and not bound_location:
3423
raise errors.LocalRequiresBoundBranch()
3424
master_branch = None
3425
if not local and bound_location and self.source.user_url != bound_location:
3426
# not pulling from master, so we need to update master.
3427
master_branch = self.target.get_master_branch(possible_transports)
3428
master_branch.lock_write()
3431
# pull from source into master.
3432
master_branch.pull(self.source, overwrite, stop_revision,
3434
return super(InterToBranch5, self).pull(overwrite,
3435
stop_revision, _hook_master=master_branch,
3436
run_hooks=run_hooks,
3437
_override_hook_target=_override_hook_target)
3440
master_branch.unlock()
3443
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
