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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
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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
533
revision_id_whitelist = []
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for node in rev_iter:
535
rev_id = node.key[-1]
536
if rev_id == left_parent:
537
# reached the left parent after the stop_revision
539
if (not reached_stop_revision_id or
540
rev_id in revision_id_whitelist):
541
yield (rev_id, node.merge_depth, node.revno,
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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)
547
reached_stop_revision_id = True
548
revision_id_whitelist.extend(rev.parent_ids)
550
raise ValueError('invalid stop_rule %r' % stop_rule)
552
def _filter_start_non_ancestors(self, rev_iter):
553
# If we started from a dotted revno, we want to consider it as a tip
554
# and don't want to yield revisions that are not part of its
555
# ancestry. Given the order guaranteed by the merge sort, we will see
556
# uninteresting descendants of the first parent of our tip before the
558
first = rev_iter.next()
559
(rev_id, merge_depth, revno, end_of_merge) = first
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# We start at a mainline revision so by definition, all others
563
# revisions in rev_iter are ancestors
564
for node in rev_iter:
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pmap = self.repository.get_parent_map([rev_id])
570
parents = pmap.get(rev_id, [])
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whitelist.update(parents)
574
# If there is no parents, there is nothing of interest left
576
# FIXME: It's hard to test this scenario here as this code is never
577
# called in that case. -- vila 20100322
580
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
582
if rev_id in whitelist:
583
pmap = self.repository.get_parent_map([rev_id])
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parents = pmap.get(rev_id, [])
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whitelist.remove(rev_id)
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whitelist.update(parents)
588
# We've reached the mainline, there is nothing left to
592
# A revision that is not part of the ancestry of our
595
yield (rev_id, merge_depth, revno, end_of_merge)
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def leave_lock_in_place(self):
598
248
"""Tell this branch object not to release the physical lock when this
599
249
object is unlocked.
601
251
If lock_write doesn't return a token, then this method is not supported.
603
253
self.control_files.leave_in_place()
709
357
The delta is relative to its mainline predecessor, or the
710
358
empty tree for revision 1.
360
assert isinstance(revno, int)
712
361
rh = self.revision_history()
713
362
if not (1 <= revno <= len(rh)):
714
raise errors.InvalidRevisionNumber(revno)
363
raise InvalidRevisionNumber(revno)
715
364
return self.repository.get_revision_delta(rh[revno-1])
717
def get_stacked_on_url(self):
718
"""Get the URL this branch is stacked against.
366
@deprecated_method(zero_sixteen)
367
def get_root_id(self):
368
"""Return the id of this branches root
720
:raises NotStacked: If the branch is not stacked.
721
:raises UnstackableBranchFormat: If the branch does not support
370
Deprecated: branches don't have root ids-- trees do.
371
Use basis_tree().get_root_id() instead.
724
raise NotImplementedError(self.get_stacked_on_url)
373
raise NotImplementedError(self.get_root_id)
726
375
def print_file(self, file, revision_id):
727
376
"""Print `file` to stdout."""
728
377
raise NotImplementedError(self.print_file)
379
def append_revision(self, *revision_ids):
380
raise NotImplementedError(self.append_revision)
730
382
def set_revision_history(self, rev_history):
731
383
raise NotImplementedError(self.set_revision_history)
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def set_parent(self, url):
735
"""See Branch.set_parent."""
736
# TODO: Maybe delete old location files?
737
# URLs should never be unicode, even on the local fs,
738
# FIXUP this and get_parent in a future branch format bump:
739
# read and rewrite the file. RBC 20060125
741
if isinstance(url, unicode):
743
url = url.encode('ascii')
744
except UnicodeEncodeError:
745
raise errors.InvalidURL(url,
746
"Urls must be 7-bit ascii, "
747
"use bzrlib.urlutils.escape")
748
url = urlutils.relative_url(self.base, url)
749
self._set_parent_location(url)
752
def set_stacked_on_url(self, url):
753
"""Set the URL this branch is stacked against.
755
:raises UnstackableBranchFormat: If the branch does not support
757
:raises UnstackableRepositoryFormat: If the repository does not support
760
if not self._format.supports_stacking():
761
raise errors.UnstackableBranchFormat(self._format, self.user_url)
762
# XXX: Changing from one fallback repository to another does not check
763
# that all the data you need is present in the new fallback.
764
# Possibly it should.
765
self._check_stackable_repo()
768
old_url = self.get_stacked_on_url()
769
except (errors.NotStacked, errors.UnstackableBranchFormat,
770
errors.UnstackableRepositoryFormat):
774
self._activate_fallback_location(url)
775
# write this out after the repository is stacked to avoid setting a
776
# stacked config that doesn't work.
777
self._set_config_location('stacked_on_location', url)
780
"""Change a branch to be unstacked, copying data as needed.
782
Don't call this directly, use set_stacked_on_url(None).
784
pb = ui.ui_factory.nested_progress_bar()
786
pb.update("Unstacking")
787
# The basic approach here is to fetch the tip of the branch,
788
# including all available ghosts, from the existing stacked
789
# repository into a new repository object without the fallbacks.
791
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
792
# correct for CHKMap repostiories
793
old_repository = self.repository
794
if len(old_repository._fallback_repositories) != 1:
795
raise AssertionError("can't cope with fallback repositories "
796
"of %r" % (self.repository,))
797
# unlock it, including unlocking the fallback
798
old_repository.unlock()
799
old_repository.lock_read()
801
# Repositories don't offer an interface to remove fallback
802
# repositories today; take the conceptually simpler option and just
803
# reopen it. We reopen it starting from the URL so that we
804
# get a separate connection for RemoteRepositories and can
805
# stream from one of them to the other. This does mean doing
806
# separate SSH connection setup, but unstacking is not a
807
# common operation so it's tolerable.
808
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
809
new_repository = new_bzrdir.find_repository()
810
self.repository = new_repository
811
if self.repository._fallback_repositories:
812
raise AssertionError("didn't expect %r to have "
813
"fallback_repositories"
814
% (self.repository,))
815
# this is not paired with an unlock because it's just restoring
816
# the previous state; the lock's released when set_stacked_on_url
818
self.repository.lock_write()
819
# XXX: If you unstack a branch while it has a working tree
820
# with a pending merge, the pending-merged revisions will no
821
# longer be present. You can (probably) revert and remerge.
823
# XXX: This only fetches up to the tip of the repository; it
824
# doesn't bring across any tags. That's fairly consistent
825
# with how branch works, but perhaps not ideal.
826
self.repository.fetch(old_repository,
827
revision_id=self.last_revision(),
830
old_repository.unlock()
834
def _set_tags_bytes(self, bytes):
835
"""Mirror method for _get_tags_bytes.
837
:seealso: Branch._get_tags_bytes.
839
return _run_with_write_locked_target(self, self._transport.put_bytes,
842
385
def _cache_revision_history(self, rev_history):
843
386
"""Set the cached revision history to rev_history.
953
491
common_index = min(self_len, other_len) -1
954
492
if common_index >= 0 and \
955
493
self_history[common_index] != other_history[common_index]:
956
raise errors.DivergedBranches(self, other)
494
raise DivergedBranches(self, other)
958
496
if stop_revision is None:
959
497
stop_revision = other_len
499
assert isinstance(stop_revision, int)
961
500
if stop_revision > other_len:
962
501
raise errors.NoSuchRevision(self, stop_revision)
963
502
return other_history[self_len:stop_revision]
966
def update_revisions(self, other, stop_revision=None, overwrite=False,
504
def update_revisions(self, other, stop_revision=None):
968
505
"""Pull in new perfect-fit revisions.
970
507
:param other: Another Branch to pull from
971
508
:param stop_revision: Updated until the given revision
972
:param overwrite: Always set the branch pointer, rather than checking
973
to see if it is a proper descendant.
974
:param graph: A Graph object that can be used to query history
975
information. This can be None.
978
return InterBranch.get(other, self).update_revisions(stop_revision,
981
def import_last_revision_info(self, source_repo, revno, revid):
982
"""Set the last revision info, importing from another repo if necessary.
984
This is used by the bound branch code to upload a revision to
985
the master branch first before updating the tip of the local branch.
987
:param source_repo: Source repository to optionally fetch from
988
:param revno: Revision number of the new tip
989
:param revid: Revision id of the new tip
991
if not self.repository.has_same_location(source_repo):
992
self.repository.fetch(source_repo, revision_id=revid)
993
self.set_last_revision_info(revno, revid)
511
raise NotImplementedError(self.update_revisions)
995
513
def revision_id_to_revno(self, revision_id):
996
514
"""Given a revision id, return its revno"""
997
515
if _mod_revision.is_null(revision_id):
517
revision_id = osutils.safe_revision_id(revision_id)
999
518
history = self.revision_history()
1001
520
return history.index(revision_id) + 1
1002
521
except ValueError:
1003
522
raise errors.NoSuchRevision(self, revision_id)
1006
524
def get_rev_id(self, revno, history=None):
1007
525
"""Find the revision id of the specified revno."""
1009
527
return _mod_revision.NULL_REVISION
1010
last_revno, last_revid = self.last_revision_info()
1011
if revno == last_revno:
1013
if revno <= 0 or revno > last_revno:
529
history = self.revision_history()
530
if revno <= 0 or revno > len(history):
1014
531
raise errors.NoSuchRevision(self, revno)
1015
distance_from_last = last_revno - revno
1016
if len(self._partial_revision_history_cache) <= distance_from_last:
1017
self._extend_partial_history(distance_from_last)
1018
return self._partial_revision_history_cache[distance_from_last]
532
return history[revno - 1]
1021
def pull(self, source, overwrite=False, stop_revision=None,
1022
possible_transports=None, *args, **kwargs):
534
def pull(self, source, overwrite=False, stop_revision=None):
1023
535
"""Mirror source into this branch.
1025
537
This branch is considered to be 'local', having low latency.
1027
539
:returns: PullResult instance
1029
return InterBranch.get(source, self).pull(overwrite=overwrite,
1030
stop_revision=stop_revision,
1031
possible_transports=possible_transports, *args, **kwargs)
541
raise NotImplementedError(self.pull)
1033
def push(self, target, overwrite=False, stop_revision=None, *args,
543
def push(self, target, overwrite=False, stop_revision=None):
1035
544
"""Mirror this branch into target.
1037
546
This branch is considered to be 'local', having low latency.
1039
return InterBranch.get(self, target).push(overwrite, stop_revision,
1042
def lossy_push(self, target, stop_revision=None):
1043
"""Push deltas into another branch.
1045
:note: This does not, like push, retain the revision ids from
1046
the source branch and will, rather than adding bzr-specific
1047
metadata, push only those semantics of the revision that can be
1048
natively represented by this branch' VCS.
1050
:param target: Target branch
1051
:param stop_revision: Revision to push, defaults to last revision.
1052
:return: BranchPushResult with an extra member revidmap:
1053
A dictionary mapping revision ids from the target branch
1054
to new revision ids in the target branch, for each
1055
revision that was pushed.
1057
inter = InterBranch.get(self, target)
1058
lossy_push = getattr(inter, "lossy_push", None)
1059
if lossy_push is None:
1060
raise errors.LossyPushToSameVCS(self, target)
1061
return lossy_push(stop_revision)
548
raise NotImplementedError(self.push)
1063
550
def basis_tree(self):
1064
551
"""Return `Tree` object for last revision."""
1065
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)
1067
577
def get_parent(self):
1068
578
"""Return the parent location of the branch.
1070
This is the default location for pull/missing. The usual
580
This is the default location for push/pull/missing. The usual
1071
581
pattern is that the user can override it by specifying a
1074
parent = self._get_parent_location()
1077
# This is an old-format absolute path to a local branch
1078
# turn it into a url
1079
if parent.startswith('/'):
1080
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1082
return urlutils.join(self.base[:-1], parent)
1083
except errors.InvalidURLJoin, e:
1084
raise errors.InaccessibleParent(parent, self.user_url)
1086
def _get_parent_location(self):
1087
raise NotImplementedError(self._get_parent_location)
584
raise NotImplementedError(self.get_parent)
1089
586
def _set_config_location(self, name, url, config=None,
1090
587
make_relative=False):
1191
665
self.check_real_revno(revno)
1193
667
def check_real_revno(self, revno):
1195
669
Check whether a revno corresponds to a real revision.
1196
670
Zero (the NULL revision) is considered invalid
1198
672
if revno < 1 or revno > self.revno():
1199
raise errors.InvalidRevisionNumber(revno)
673
raise InvalidRevisionNumber(revno)
1201
675
@needs_read_lock
1202
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
676
def clone(self, to_bzrdir, revision_id=None):
1203
677
"""Clone this branch into to_bzrdir preserving all semantic values.
1205
Most API users will want 'create_clone_on_transport', which creates a
1206
new bzrdir and branch on the fly.
1208
679
revision_id: if not None, the revision history in the new branch will
1209
680
be truncated to end with revision_id.
1211
result = to_bzrdir.create_branch()
1214
if repository_policy is not None:
1215
repository_policy.configure_branch(result)
1216
self.copy_content_into(result, revision_id=revision_id)
682
result = self._format.initialize(to_bzrdir)
683
self.copy_content_into(result, revision_id=revision_id)
1221
686
@needs_read_lock
1222
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
687
def sprout(self, to_bzrdir, revision_id=None):
1223
688
"""Create a new line of development from the branch, into to_bzrdir.
1225
to_bzrdir controls the branch format.
1227
690
revision_id: if not None, the revision history in the new branch will
1228
691
be truncated to end with revision_id.
1230
if (repository_policy is not None and
1231
repository_policy.requires_stacking()):
1232
to_bzrdir._format.require_stacking(_skip_repo=True)
1233
result = to_bzrdir.create_branch()
1236
if repository_policy is not None:
1237
repository_policy.configure_branch(result)
1238
self.copy_content_into(result, revision_id=revision_id)
1239
result.set_parent(self.bzrdir.root_transport.base)
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)
1244
698
def _synchronize_history(self, destination, revision_id):
1245
699
"""Synchronize last revision and revision history between branches.
1247
701
This version is most efficient when the destination is also a
1248
BzrBranch6, but works for BzrBranch5, as long as the destination's
1249
repository contains all the lefthand ancestors of the intended
1250
last_revision. If not, set_last_revision_info will fail.
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
1252
707
:param destination: The branch to copy the history into
1253
708
:param revision_id: The revision-id to truncate history at. May
1254
709
be None to copy complete history.
1256
source_revno, source_revision_id = self.last_revision_info()
1257
if revision_id is None:
1258
revno, revision_id = source_revno, source_revision_id
1260
graph = self.repository.get_graph()
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)
1262
revno = graph.find_distance_to_null(revision_id,
1263
[(source_revision_id, source_revno)])
1264
except errors.GhostRevisionsHaveNoRevno:
1265
# Default to 1, if we can't find anything else
1267
destination.set_last_revision_info(revno, revision_id)
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)
1269
723
@needs_read_lock
1270
724
def copy_content_into(self, destination, revision_id=None):
1284
737
destination.set_parent(parent)
1285
if self._push_should_merge_tags():
1286
self.tags.merge_to(destination.tags)
1288
def update_references(self, target):
1289
if not getattr(self._format, 'supports_reference_locations', False):
1291
reference_dict = self._get_all_reference_info()
1292
if len(reference_dict) == 0:
1294
old_base = self.base
1295
new_base = target.base
1296
target_reference_dict = target._get_all_reference_info()
1297
for file_id, (tree_path, branch_location) in (
1298
reference_dict.items()):
1299
branch_location = urlutils.rebase_url(branch_location,
1301
target_reference_dict.setdefault(
1302
file_id, (tree_path, branch_location))
1303
target._set_all_reference_info(target_reference_dict)
738
self.tags.merge_to(destination.tags)
1305
740
@needs_read_lock
1306
def check(self, refs):
1307
742
"""Check consistency of the branch.
1309
744
In particular this checks that revisions given in the revision-history
1310
do actually match up in the revision graph, and that they're all
745
do actually match up in the revision graph, and that they're all
1311
746
present in the repository.
1313
748
Callers will typically also want to check the repository.
1315
:param refs: Calculated refs for this branch as specified by
1316
branch._get_check_refs()
1317
750
:return: A BranchCheckResult.
1319
result = BranchCheckResult(self)
1320
last_revno, last_revision_id = self.last_revision_info()
1321
actual_revno = refs[('lefthand-distance', last_revision_id)]
1322
if actual_revno != last_revno:
1323
result.errors.append(errors.BzrCheckError(
1324
'revno does not match len(mainline) %s != %s' % (
1325
last_revno, actual_revno)))
1326
# TODO: We should probably also check that self.revision_history
1327
# matches the repository for older branch formats.
1328
# If looking for the code that cross-checks repository parents against
1329
# the iter_reverse_revision_history output, that is now a repository
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)
1333
770
def _get_checkout_format(self):
1334
771
"""Return the most suitable metadir for a checkout of this branch.
1414
818
basis_tree.unlock()
1418
def reconcile(self, thorough=True):
1419
"""Make sure the data stored in this branch is consistent."""
1420
from bzrlib.reconcile import BranchReconciler
1421
reconciler = BranchReconciler(self, thorough=thorough)
1422
reconciler.reconcile()
1425
def reference_parent(self, file_id, path, possible_transports=None):
821
def reference_parent(self, file_id, path):
1426
822
"""Return the parent branch for a tree-reference file_id
1427
823
:param file_id: The file_id of the tree reference
1428
824
:param path: The path of the file_id in the tree
1429
825
:return: A branch associated with the file_id
1431
827
# FIXME should provide multiple branches, based on config
1432
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1433
possible_transports=possible_transports)
828
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1435
830
def supports_tags(self):
1436
831
return self._format.supports_tags()
1438
def automatic_tag_name(self, revision_id):
1439
"""Try to automatically find the tag name for a revision.
1441
:param revision_id: Revision id of the revision.
1442
:return: A tag name or None if no tag name could be determined.
1444
for hook in Branch.hooks['automatic_tag_name']:
1445
ret = hook(self, revision_id)
1450
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1452
"""Ensure that revision_b is a descendant of revision_a.
1454
This is a helper function for update_revisions.
1456
:raises: DivergedBranches if revision_b has diverged from revision_a.
1457
:returns: True if revision_b is a descendant of revision_a.
1459
relation = self._revision_relations(revision_a, revision_b, graph)
1460
if relation == 'b_descends_from_a':
1462
elif relation == 'diverged':
1463
raise errors.DivergedBranches(self, other_branch)
1464
elif relation == 'a_descends_from_b':
1467
raise AssertionError("invalid relation: %r" % (relation,))
1469
def _revision_relations(self, revision_a, revision_b, graph):
1470
"""Determine the relationship between two revisions.
1472
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1474
heads = graph.heads([revision_a, revision_b])
1475
if heads == set([revision_b]):
1476
return 'b_descends_from_a'
1477
elif heads == set([revision_a, revision_b]):
1478
# These branches have diverged
1480
elif heads == set([revision_a]):
1481
return 'a_descends_from_b'
1483
raise AssertionError("invalid heads: %r" % (heads,))
1486
834
class BranchFormat(object):
1487
835
"""An encapsulation of the initialization and open routines for a format.
1596
920
control_files = lockable_files.LockableFiles(branch_transport,
1597
921
lock_name, lock_class)
1598
922
control_files.create_lock()
1600
control_files.lock_write()
1601
except errors.LockContention:
1602
if lock_type != 'branch4':
923
control_files.lock_write()
1608
utf8_files += [('format', self.get_format_string())]
925
control_files.put_utf8('format', self.get_format_string())
1610
for (filename, content) in utf8_files:
1611
branch_transport.put_bytes(
1613
mode=a_bzrdir._get_file_mode())
927
for file, content in utf8_files:
928
control_files.put_utf8(file, content)
1616
control_files.unlock()
1617
branch = self.open(a_bzrdir, name, _found=True)
1618
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
930
control_files.unlock()
931
return self.open(a_bzrdir, _found=True)
1621
def initialize(self, a_bzrdir, name=None):
1622
"""Create a branch of this format in a_bzrdir.
1624
:param name: Name of the colocated branch to create.
933
def initialize(self, a_bzrdir):
934
"""Create a branch of this format in a_bzrdir."""
1626
935
raise NotImplementedError(self.initialize)
1628
937
def is_supported(self):
1629
938
"""Is this format supported?
1631
940
Supported formats can be initialized and opened.
1632
Unsupported formats may not support initialization or committing or
941
Unsupported formats may not support initialization or committing or
1633
942
some other features depending on the reason for not being supported.
1637
def make_tags(self, branch):
1638
"""Create a tags object for branch.
1640
This method is on BranchFormat, because BranchFormats are reflected
1641
over the wire via network_name(), whereas full Branch instances require
1642
multiple VFS method calls to operate at all.
1644
The default implementation returns a disabled-tags instance.
1646
Note that it is normal for branch to be a RemoteBranch when using tags
1649
return DisabledTags(branch)
1651
def network_name(self):
1652
"""A simple byte string uniquely identifying this format for RPC calls.
1654
MetaDir branch formats use their disk format string to identify the
1655
repository over the wire. All in one formats such as bzr < 0.8, and
1656
foreign formats like svn/git and hg should use some marker which is
1657
unique and immutable.
1659
raise NotImplementedError(self.network_name)
1661
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
946
def open(self, a_bzrdir, _found=False):
1662
947
"""Return the branch object for a_bzrdir
1664
:param a_bzrdir: A BzrDir that contains a branch.
1665
:param name: Name of colocated branch to open
1666
:param _found: a private parameter, do not use it. It is used to
1667
indicate if format probing has already be done.
1668
:param ignore_fallbacks: when set, no fallback branches will be opened
1669
(if there are any). Default is to open fallbacks.
949
_found is a private parameter, do not use it. It is used to indicate
950
if format probing has already be done.
1671
952
raise NotImplementedError(self.open)
1674
955
def register_format(klass, format):
1675
"""Register a metadir format."""
1676
956
klass._formats[format.get_format_string()] = format
1677
# Metadir formats have a network name of their format string, and get
1678
# registered as class factories.
1679
network_format_registry.register(format.get_format_string(), format.__class__)
1682
959
def set_default_format(klass, format):
1683
960
klass._default_format = format
1685
def supports_set_append_revisions_only(self):
1686
"""True if this format supports set_append_revisions_only."""
1689
def supports_stacking(self):
1690
"""True if this format records a stacked-on branch."""
1694
963
def unregister_format(klass, format):
964
assert klass._formats[format.get_format_string()] is format
1695
965
del klass._formats[format.get_format_string()]
1697
967
def __str__(self):
1698
return self.get_format_description().rstrip()
968
return self.get_format_string().rstrip()
1700
970
def supports_tags(self):
1701
971
"""True if this format supports tags stored in the branch"""
1702
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()
1705
989
class BranchHooks(Hooks):
1706
990
"""A dictionary mapping hook name to a list of callables for branch hooks.
1708
992
e.g. ['set_rh'] Is the list of items to be called when the
1709
993
set_revision_history function is invoked.
1718
1002
Hooks.__init__(self)
1719
self.create_hook(HookPoint('set_rh',
1720
"Invoked whenever the revision history has been set via "
1721
"set_revision_history. The api signature is (branch, "
1722
"revision_history), and the branch will be write-locked. "
1723
"The set_rh hook can be expensive for bzr to trigger, a better "
1724
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1725
self.create_hook(HookPoint('open',
1726
"Called with the Branch object that has been opened after a "
1727
"branch is opened.", (1, 8), None))
1728
self.create_hook(HookPoint('post_push',
1729
"Called after a push operation completes. post_push is called "
1730
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1731
"bzr client.", (0, 15), None))
1732
self.create_hook(HookPoint('post_pull',
1733
"Called after a pull operation completes. post_pull is called "
1734
"with a bzrlib.branch.PullResult object and only runs in the "
1735
"bzr client.", (0, 15), None))
1736
self.create_hook(HookPoint('pre_commit',
1737
"Called after a commit is calculated but before it is is "
1738
"completed. pre_commit is called with (local, master, old_revno, "
1739
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1740
"). old_revid is NULL_REVISION for the first commit to a branch, "
1741
"tree_delta is a TreeDelta object describing changes from the "
1742
"basis revision. hooks MUST NOT modify this delta. "
1743
" future_tree is an in-memory tree obtained from "
1744
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1745
"tree.", (0,91), None))
1746
self.create_hook(HookPoint('post_commit',
1747
"Called in the bzr client after a commit has completed. "
1748
"post_commit is called with (local, master, old_revno, old_revid, "
1749
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1750
"commit to a branch.", (0, 15), None))
1751
self.create_hook(HookPoint('post_uncommit',
1752
"Called in the bzr client after an uncommit completes. "
1753
"post_uncommit is called with (local, master, old_revno, "
1754
"old_revid, new_revno, new_revid) where local is the local branch "
1755
"or None, master is the target branch, and an empty branch "
1756
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1757
self.create_hook(HookPoint('pre_change_branch_tip',
1758
"Called in bzr client and server before a change to the tip of a "
1759
"branch is made. pre_change_branch_tip is called with a "
1760
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1761
"commit, uncommit will all trigger this hook.", (1, 6), None))
1762
self.create_hook(HookPoint('post_change_branch_tip',
1763
"Called in bzr client and server after a change to the tip of a "
1764
"branch is made. post_change_branch_tip is called with a "
1765
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1766
"commit, uncommit will all trigger this hook.", (1, 4), None))
1767
self.create_hook(HookPoint('transform_fallback_location',
1768
"Called when a stacked branch is activating its fallback "
1769
"locations. transform_fallback_location is called with (branch, "
1770
"url), and should return a new url. Returning the same url "
1771
"allows it to be used as-is, returning a different one can be "
1772
"used to cause the branch to stack on a closer copy of that "
1773
"fallback_location. Note that the branch cannot have history "
1774
"accessing methods called on it during this hook because the "
1775
"fallback locations have not been activated. When there are "
1776
"multiple hooks installed for transform_fallback_location, "
1777
"all are called with the url returned from the previous hook."
1778
"The order is however undefined.", (1, 9), None))
1779
self.create_hook(HookPoint('automatic_tag_name',
1780
"Called to determine an automatic tag name for a revision."
1781
"automatic_tag_name is called with (branch, revision_id) and "
1782
"should return a tag name or None if no tag name could be "
1783
"determined. The first non-None tag name returned will be used.",
1785
self.create_hook(HookPoint('post_branch_init',
1786
"Called after new branch initialization completes. "
1787
"post_branch_init is called with a "
1788
"bzrlib.branch.BranchInitHookParams. "
1789
"Note that init, branch and checkout (both heavyweight and "
1790
"lightweight) will all trigger this hook.", (2, 2), None))
1791
self.create_hook(HookPoint('post_switch',
1792
"Called after a checkout switches branch. "
1793
"post_switch is called with a "
1794
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
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'] = []
1798
1042
# install the default hooks into the Branch class.
1799
1043
Branch.hooks = BranchHooks()
1802
class ChangeBranchTipParams(object):
1803
"""Object holding parameters passed to *_change_branch_tip hooks.
1805
There are 5 fields that hooks may wish to access:
1807
:ivar branch: the branch being changed
1808
:ivar old_revno: revision number before the change
1809
:ivar new_revno: revision number after the change
1810
:ivar old_revid: revision id before the change
1811
:ivar new_revid: revision id after the change
1813
The revid fields are strings. The revno fields are integers.
1816
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1817
"""Create a group of ChangeBranchTip parameters.
1819
:param branch: The branch being changed.
1820
:param old_revno: Revision number before the change.
1821
:param new_revno: Revision number after the change.
1822
:param old_revid: Tip revision id before the change.
1823
:param new_revid: Tip revision id after the change.
1825
self.branch = branch
1826
self.old_revno = old_revno
1827
self.new_revno = new_revno
1828
self.old_revid = old_revid
1829
self.new_revid = new_revid
1831
def __eq__(self, other):
1832
return self.__dict__ == other.__dict__
1835
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1836
self.__class__.__name__, self.branch,
1837
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1840
class BranchInitHookParams(object):
1841
"""Object holding parameters passed to *_branch_init hooks.
1843
There are 4 fields that hooks may wish to access:
1845
:ivar format: the branch format
1846
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1847
:ivar name: name of colocated branch, if any (or None)
1848
:ivar branch: the branch created
1850
Note that for lightweight checkouts, the bzrdir and format fields refer to
1851
the checkout, hence they are different from the corresponding fields in
1852
branch, which refer to the original branch.
1855
def __init__(self, format, a_bzrdir, name, branch):
1856
"""Create a group of BranchInitHook parameters.
1858
:param format: the branch format
1859
:param a_bzrdir: the BzrDir where the branch will be/has been
1861
:param name: name of colocated branch, if any (or None)
1862
:param branch: the branch created
1864
Note that for lightweight checkouts, the bzrdir and format fields refer
1865
to the checkout, hence they are different from the corresponding fields
1866
in branch, which refer to the original branch.
1868
self.format = format
1869
self.bzrdir = a_bzrdir
1871
self.branch = branch
1873
def __eq__(self, other):
1874
return self.__dict__ == other.__dict__
1878
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1880
return "<%s of format:%s bzrdir:%s>" % (
1881
self.__class__.__name__, self.branch,
1882
self.format, self.bzrdir)
1885
class SwitchHookParams(object):
1886
"""Object holding parameters passed to *_switch hooks.
1888
There are 4 fields that hooks may wish to access:
1890
:ivar control_dir: BzrDir of the checkout to change
1891
:ivar to_branch: branch that the checkout is to reference
1892
:ivar force: skip the check for local commits in a heavy checkout
1893
:ivar revision_id: revision ID to switch to (or None)
1896
def __init__(self, control_dir, to_branch, force, revision_id):
1897
"""Create a group of SwitchHook parameters.
1899
:param control_dir: BzrDir of the checkout to change
1900
:param to_branch: branch that the checkout is to reference
1901
:param force: skip the check for local commits in a heavy checkout
1902
:param revision_id: revision ID to switch to (or None)
1904
self.control_dir = control_dir
1905
self.to_branch = to_branch
1907
self.revision_id = revision_id
1909
def __eq__(self, other):
1910
return self.__dict__ == other.__dict__
1913
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1914
self.control_dir, self.to_branch,
1918
1046
class BzrBranchFormat4(BranchFormat):
1919
1047
"""Bzr branch format 4.
1927
1055
"""See BranchFormat.get_format_description()."""
1928
1056
return "Branch format 4"
1930
def initialize(self, a_bzrdir, name=None):
1058
def initialize(self, a_bzrdir):
1931
1059
"""Create a branch of this format in a_bzrdir."""
1932
1060
utf8_files = [('revision-history', ''),
1933
1061
('branch-name', ''),
1935
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1063
return self._initialize_helper(a_bzrdir, utf8_files,
1936
1064
lock_type='branch4', set_format=False)
1938
1066
def __init__(self):
1939
1067
super(BzrBranchFormat4, self).__init__()
1940
1068
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1942
def network_name(self):
1943
"""The network name for this format is the control dirs disk label."""
1944
return self._matchingbzrdir.get_format_string()
1070
def open(self, a_bzrdir, _found=False):
1071
"""Return the branch object for a_bzrdir
1946
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1947
"""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.
1949
1077
# we are being called directly and must probe.
1950
1078
raise NotImplementedError
1951
1079
return BzrBranch(_format=self,
1952
1080
_control_files=a_bzrdir._control_files,
1953
1081
a_bzrdir=a_bzrdir,
1955
1082
_repository=a_bzrdir.open_repository())
1957
1084
def __str__(self):
1958
1085
return "Bazaar-NG branch format 4"
1961
class BranchFormatMetadir(BranchFormat):
1962
"""Common logic for meta-dir based branch formats."""
1964
def _branch_class(self):
1965
"""What class to instantiate on open calls."""
1966
raise NotImplementedError(self._branch_class)
1968
def network_name(self):
1969
"""A simple byte string uniquely identifying this format for RPC calls.
1971
Metadir branch formats use their format string.
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.
1973
return self.get_format_string()
1975
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1976
"""See BranchFormat.open()."""
1978
format = BranchFormat.find_format(a_bzrdir, name=name)
1979
if format.__class__ != self.__class__:
1980
raise AssertionError("wrong format %r found for %r" %
1982
transport = a_bzrdir.get_branch_transport(None, name=name)
1127
format = BranchFormat.find_format(a_bzrdir)
1128
assert format.__class__ == self.__class__
1130
transport = a_bzrdir.get_branch_transport(None)
1984
1131
control_files = lockable_files.LockableFiles(transport, 'lock',
1985
1132
lockdir.LockDir)
1986
return self._branch_class()(_format=self,
1133
return BzrBranch5(_format=self,
1987
1134
_control_files=control_files,
1989
1135
a_bzrdir=a_bzrdir,
1990
_repository=a_bzrdir.find_repository(),
1991
ignore_fallbacks=ignore_fallbacks)
1992
except errors.NoSuchFile:
1993
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1996
super(BranchFormatMetadir, self).__init__()
1997
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1998
self._matchingbzrdir.set_branch_format(self)
2000
def supports_tags(self):
2004
class BzrBranchFormat5(BranchFormatMetadir):
2005
"""Bzr branch format 5.
2008
- a revision-history file.
2010
- a lock dir guarding the branch itself
2011
- all of this stored in a branch/ subdirectory
2012
- works with shared repositories.
2014
This format is new in bzr 0.8.
2017
def _branch_class(self):
2020
def get_format_string(self):
2021
"""See BranchFormat.get_format_string()."""
2022
return "Bazaar-NG branch format 5\n"
2024
def get_format_description(self):
2025
"""See BranchFormat.get_format_description()."""
2026
return "Branch format 5"
2028
def initialize(self, a_bzrdir, name=None):
2029
"""Create a branch of this format in a_bzrdir."""
2030
utf8_files = [('revision-history', ''),
2031
('branch-name', ''),
2033
return self._initialize_helper(a_bzrdir, utf8_files, name)
2035
def supports_tags(self):
2039
class BzrBranchFormat6(BranchFormatMetadir):
2040
"""Branch format with last-revision and tags.
1136
_repository=a_bzrdir.find_repository())
1138
raise NotBranchError(path=transport.base)
1141
class BzrBranchFormat6(BzrBranchFormat5):
1142
"""Branch format with last-revision
2042
1144
Unlike previous formats, this has no explicit revision history. Instead,
2043
1145
this just stores the last-revision, and the left-hand history leading
2044
1146
up to there is the history.
2046
1148
This format was introduced in bzr 0.15
2047
and became the default in 0.91.
2050
def _branch_class(self):
2053
1151
def get_format_string(self):
2054
1152
"""See BranchFormat.get_format_string()."""
2055
1153
return "Bazaar Branch Format 6 (bzr 0.15)\n"
2058
1156
"""See BranchFormat.get_format_description()."""
2059
1157
return "Branch format 6"
2061
def initialize(self, a_bzrdir, name=None):
2062
"""Create a branch of this format in a_bzrdir."""
2063
utf8_files = [('last-revision', '0 null:\n'),
2064
('branch.conf', ''),
2067
return self._initialize_helper(a_bzrdir, utf8_files, name)
2069
def make_tags(self, branch):
2070
"""See bzrlib.branch.BranchFormat.make_tags()."""
2071
return BasicTags(branch)
2073
def supports_set_append_revisions_only(self):
2077
class BzrBranchFormat8(BranchFormatMetadir):
2078
"""Metadir format supporting storing locations of subtree branches."""
2080
def _branch_class(self):
2083
def get_format_string(self):
2084
"""See BranchFormat.get_format_string()."""
2085
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2087
def get_format_description(self):
2088
"""See BranchFormat.get_format_description()."""
2089
return "Branch format 8"
2091
def initialize(self, a_bzrdir, name=None):
2092
"""Create a branch of this format in a_bzrdir."""
2093
utf8_files = [('last-revision', '0 null:\n'),
2094
('branch.conf', ''),
2098
return self._initialize_helper(a_bzrdir, utf8_files, name)
2101
super(BzrBranchFormat8, self).__init__()
2102
self._matchingbzrdir.repository_format = \
2103
RepositoryFormatKnitPack5RichRoot()
2105
def make_tags(self, branch):
2106
"""See bzrlib.branch.BranchFormat.make_tags()."""
2107
return BasicTags(branch)
2109
def supports_set_append_revisions_only(self):
2112
def supports_stacking(self):
2115
supports_reference_locations = True
2118
class BzrBranchFormat7(BzrBranchFormat8):
2119
"""Branch format with last-revision, tags, and a stacked location pointer.
2121
The stacked location pointer is passed down to the repository and requires
2122
a repository format with supports_external_lookups = True.
2124
This format was introduced in bzr 1.6.
2127
def initialize(self, a_bzrdir, name=None):
2128
"""Create a branch of this format in a_bzrdir."""
2129
utf8_files = [('last-revision', '0 null:\n'),
2130
('branch.conf', ''),
2133
return self._initialize_helper(a_bzrdir, utf8_files, name)
2135
def _branch_class(self):
2138
def get_format_string(self):
2139
"""See BranchFormat.get_format_string()."""
2140
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2142
def get_format_description(self):
2143
"""See BranchFormat.get_format_description()."""
2144
return "Branch format 7"
2146
def supports_set_append_revisions_only(self):
2149
supports_reference_locations = False
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):
2152
1189
class BranchReferenceFormat(BranchFormat):
2167
1204
def get_format_description(self):
2168
1205
"""See BranchFormat.get_format_description()."""
2169
1206
return "Checkout reference format 1"
2171
1208
def get_reference(self, a_bzrdir):
2172
1209
"""See BranchFormat.get_reference()."""
2173
1210
transport = a_bzrdir.get_branch_transport(None)
2174
return transport.get_bytes('location')
2176
def set_reference(self, a_bzrdir, to_branch):
2177
"""See BranchFormat.set_reference()."""
2178
transport = a_bzrdir.get_branch_transport(None)
2179
location = transport.put_bytes('location', to_branch.base)
2181
def initialize(self, a_bzrdir, name=None, target_branch=None):
1211
return transport.get('location').read()
1213
def initialize(self, a_bzrdir, target_branch=None):
2182
1214
"""Create a branch of this format in a_bzrdir."""
2183
1215
if target_branch is None:
2184
1216
# this format does not implement branch itself, thus the implicit
2185
1217
# creation contract must see it as uninitializable
2186
1218
raise errors.UninitializableFormat(self)
2187
mutter('creating branch reference in %s', a_bzrdir.user_url)
2188
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1219
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1220
branch_transport = a_bzrdir.get_branch_transport(self)
2189
1221
branch_transport.put_bytes('location',
2190
target_branch.bzrdir.user_url)
1222
target_branch.bzrdir.root_transport.base)
2191
1223
branch_transport.put_bytes('format', self.get_format_string())
2193
a_bzrdir, name, _found=True,
2194
possible_transports=[target_branch.bzrdir.root_transport])
2195
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1224
return self.open(a_bzrdir, _found=True)
2198
1226
def __init__(self):
2199
1227
super(BranchReferenceFormat, self).__init__()
2200
1228
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2201
self._matchingbzrdir.set_branch_format(self)
2203
1230
def _make_reference_clone_function(format, a_branch):
2204
1231
"""Create a clone() routine for a branch dynamically."""
2205
def clone(to_bzrdir, revision_id=None,
2206
repository_policy=None):
1232
def clone(to_bzrdir, revision_id=None):
2207
1233
"""See Branch.clone()."""
2208
return format.initialize(to_bzrdir, target_branch=a_branch)
1234
return format.initialize(to_bzrdir, a_branch)
2209
1235
# cannot obey revision_id limits when cloning a reference ...
2210
1236
# FIXME RBC 20060210 either nuke revision_id for clone, or
2211
1237
# emit some sort of warning/error to the caller ?!
2214
def open(self, a_bzrdir, name=None, _found=False, location=None,
2215
possible_transports=None, ignore_fallbacks=False):
1240
def open(self, a_bzrdir, _found=False, location=None):
2216
1241
"""Return the branch that the branch reference in a_bzrdir points at.
2218
:param a_bzrdir: A BzrDir that contains a branch.
2219
:param name: Name of colocated branch to open, if any
2220
:param _found: a private parameter, do not use it. It is used to
2221
indicate if format probing has already be done.
2222
:param ignore_fallbacks: when set, no fallback branches will be opened
2223
(if there are any). Default is to open fallbacks.
2224
:param location: The location of the referenced branch. If
2225
unspecified, this will be determined from the branch reference in
2227
:param possible_transports: An optional reusable transports list.
1243
_found is a private parameter, do not use it. It is used to indicate
1244
if format probing has already be done.
2230
format = BranchFormat.find_format(a_bzrdir, name=name)
2231
if format.__class__ != self.__class__:
2232
raise AssertionError("wrong format %r found for %r" %
1247
format = BranchFormat.find_format(a_bzrdir)
1248
assert format.__class__ == self.__class__
2234
1249
if location is None:
2235
1250
location = self.get_reference(a_bzrdir)
2236
real_bzrdir = bzrdir.BzrDir.open(
2237
location, possible_transports=possible_transports)
2238
result = real_bzrdir.open_branch(name=name,
2239
ignore_fallbacks=ignore_fallbacks)
1251
real_bzrdir = bzrdir.BzrDir.open(location)
1252
result = real_bzrdir.open_branch()
2240
1253
# this changes the behaviour of result.clone to create a new reference
2241
1254
# rather than a copy of the content of the branch.
2242
1255
# I did not use a proxy object because that needs much more extensive
2252
network_format_registry = registry.FormatRegistry()
2253
"""Registry of formats indexed by their network name.
2255
The network name for a branch format is an identifier that can be used when
2256
referring to formats with smart server operations. See
2257
BranchFormat.network_name() for more detail.
2261
1265
# formats which have no format string are not discoverable
2262
1266
# and not independently creatable, so are not registered.
2263
__format5 = BzrBranchFormat5()
2264
__format6 = BzrBranchFormat6()
2265
__format7 = BzrBranchFormat7()
2266
__format8 = BzrBranchFormat8()
2267
BranchFormat.register_format(__format5)
1267
__default_format = BzrBranchFormat5()
1268
BranchFormat.register_format(__default_format)
2268
1269
BranchFormat.register_format(BranchReferenceFormat())
2269
BranchFormat.register_format(__format6)
2270
BranchFormat.register_format(__format7)
2271
BranchFormat.register_format(__format8)
2272
BranchFormat.set_default_format(__format7)
1270
BranchFormat.register_format(BzrBranchFormat6())
1271
BranchFormat.set_default_format(__default_format)
2273
1272
_legacy_formats = [BzrBranchFormat4(),
2275
network_format_registry.register(
2276
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2279
class BranchWriteLockResult(object):
2280
"""The result of write locking a branch.
2282
:ivar branch_token: The token obtained from the underlying branch lock, or
2284
:ivar unlock: A callable which will unlock the lock.
2287
def __init__(self, unlock, branch_token):
2288
self.branch_token = branch_token
2289
self.unlock = unlock
2292
class BzrBranch(Branch, _RelockDebugMixin):
1275
class BzrBranch(Branch):
2293
1276
"""A branch stored in the actual filesystem.
2295
1278
Note that it's "local" in the context of the filesystem; it doesn't
2296
1279
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2297
1280
it's writable, and can be accessed via the normal filesystem API.
2299
:ivar _transport: Transport for file operations on this branch's
2300
control files, typically pointing to the .bzr/branch directory.
2301
:ivar repository: Repository for this branch.
2302
:ivar base: The url of the base directory for this branch; the one
2303
containing the .bzr directory.
2304
:ivar name: Optional colocated branch name as it exists in the control
2308
1283
def __init__(self, _format=None,
2309
_control_files=None, a_bzrdir=None, name=None,
2310
_repository=None, ignore_fallbacks=False):
1284
_control_files=None, a_bzrdir=None, _repository=None):
2311
1285
"""Create new branch object at a particular location."""
1286
Branch.__init__(self)
2312
1287
if a_bzrdir is None:
2313
1288
raise ValueError('a_bzrdir must be supplied')
2315
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
2316
1294
self._base = self.bzrdir.transport.clone('..').base
2318
# XXX: We should be able to just do
2319
# self.base = self.bzrdir.root_transport.base
2320
# but this does not quite work yet -- mbp 20080522
2321
1295
self._format = _format
2322
1296
if _control_files is None:
2323
1297
raise ValueError('BzrBranch _control_files is None')
2324
1298
self.control_files = _control_files
2325
1299
self._transport = _control_files._transport
2326
1300
self.repository = _repository
2327
Branch.__init__(self)
2329
1302
def __str__(self):
2330
if self.name is None:
2331
return '%s(%s)' % (self.__class__.__name__, self.user_url)
2333
return '%s(%s,%s)' % (self.__class__.__name__, self.user_url,
1303
return '%s(%r)' % (self.__class__.__name__, self.base)
2336
1305
__repr__ = __str__
2342
1311
base = property(_get_base, doc="The URL for the root of this branch.")
2344
def _get_config(self):
2345
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
2347
1325
def is_locked(self):
2348
1326
return self.control_files.is_locked()
2350
1328
def lock_write(self, token=None):
2351
"""Lock the branch for write operations.
2353
:param token: A token to permit reacquiring a previously held and
2355
:return: A BranchWriteLockResult.
2357
if not self.is_locked():
2358
self._note_lock('w')
2359
# All-in-one needs to always unlock/lock.
2360
repo_control = getattr(self.repository, 'control_files', None)
2361
if self.control_files == repo_control or not self.is_locked():
2362
self.repository._warn_if_deprecated(self)
2363
self.repository.lock_write()
1329
repo_token = self.repository.lock_write()
2368
return BranchWriteLockResult(self.unlock,
2369
self.control_files.lock_write(token=token))
1331
token = self.control_files.lock_write(token=token)
2372
self.repository.unlock()
1333
self.repository.unlock()
2375
1337
def lock_read(self):
2376
"""Lock the branch for read operations.
2378
:return: An object with an unlock method which will release the lock
2381
if not self.is_locked():
2382
self._note_lock('r')
2383
# All-in-one needs to always unlock/lock.
2384
repo_control = getattr(self.repository, 'control_files', None)
2385
if self.control_files == repo_control or not self.is_locked():
2386
self.repository._warn_if_deprecated(self)
2387
self.repository.lock_read()
1338
self.repository.lock_read()
2392
1340
self.control_files.lock_read()
2396
self.repository.unlock()
1342
self.repository.unlock()
2399
@only_raises(errors.LockNotHeld, errors.LockBroken)
2400
1345
def unlock(self):
1346
# TODO: test for failed two phase locks. This is known broken.
2402
1348
self.control_files.unlock()
2404
# All-in-one needs to always unlock/lock.
2405
repo_control = getattr(self.repository, 'control_files', None)
2406
if (self.control_files == repo_control or
2407
not self.control_files.is_locked()):
2408
self.repository.unlock()
2409
if not self.control_files.is_locked():
2410
# we just released the lock
2411
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()
2413
1355
def peek_lock_mode(self):
2414
1356
if self.control_files._lock_count == 0:
2424
1366
"""See Branch.print_file."""
2425
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)
2427
1380
def _write_revision_history(self, history):
2428
1381
"""Factored out of set_revision_history.
2430
1383
This performs the actual writing to disk.
2431
1384
It is intended to be called by BzrBranch5.set_revision_history."""
2432
self._transport.put_bytes(
2433
'revision-history', '\n'.join(history),
2434
mode=self.bzrdir._get_file_mode())
1385
self.control_files.put_bytes(
1386
'revision-history', '\n'.join(history))
2436
1388
@needs_write_lock
2437
1389
def set_revision_history(self, rev_history):
2438
1390
"""See Branch.set_revision_history."""
2439
if 'evil' in debug.debug_flags:
2440
mutter_callsite(3, "set_revision_history scales with history.")
2441
check_not_reserved_id = _mod_revision.check_not_reserved_id
2442
for rev_id in rev_history:
2443
check_not_reserved_id(rev_id)
2444
if Branch.hooks['post_change_branch_tip']:
2445
# Don't calculate the last_revision_info() if there are no hooks
2447
old_revno, old_revid = self.last_revision_info()
2448
if len(rev_history) == 0:
2449
revid = _mod_revision.NULL_REVISION
2451
revid = rev_history[-1]
2452
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()
2453
1393
self._write_revision_history(rev_history)
2454
self._clear_cached_state()
2455
1394
self._cache_revision_history(rev_history)
2456
1395
for hook in Branch.hooks['set_rh']:
2457
1396
hook(self, rev_history)
2458
if Branch.hooks['post_change_branch_tip']:
2459
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2461
def _synchronize_history(self, destination, revision_id):
2462
"""Synchronize last revision and revision history between branches.
2464
This version is most efficient when the destination is also a
2465
BzrBranch5, but works for BzrBranch6 as long as the revision
2466
history is the true lefthand parent history, and all of the revisions
2467
are in the destination's repository. If not, set_revision_history
2470
:param destination: The branch to copy the history into
2471
:param revision_id: The revision-id to truncate history at. May
2472
be None to copy complete history.
2474
if not isinstance(destination._format, BzrBranchFormat5):
2475
super(BzrBranch, self)._synchronize_history(
2476
destination, revision_id)
2478
if revision_id == _mod_revision.NULL_REVISION:
2481
new_history = self.revision_history()
2482
if revision_id is not None and new_history != []:
2484
new_history = new_history[:new_history.index(revision_id) + 1]
2486
rev = self.repository.get_revision(revision_id)
2487
new_history = rev.get_history(self.repository)[1:]
2488
destination.set_revision_history(new_history)
2490
1398
@needs_write_lock
2491
1399
def set_last_revision_info(self, revno, revision_id):
2492
"""Set the last revision of this branch.
2494
The caller is responsible for checking that the revno is correct
2495
for this revision id.
2497
It may be possible to set the branch last revision to an id not
2498
present in the repository. However, branches can also be
2499
configured to check constraints on history, in which case this may not
2502
revision_id = _mod_revision.ensure_null(revision_id)
2503
# this old format stores the full history, but this api doesn't
2504
# provide it, so we must generate, and might as well check it's
1400
revision_id = osutils.safe_revision_id(revision_id)
2506
1401
history = self._lefthand_history(revision_id)
2507
if len(history) != revno:
2508
raise AssertionError('%d != %d' % (len(history), revno))
1402
assert len(history) == revno, '%d != %d' % (len(history), revno)
2509
1403
self.set_revision_history(history)
2511
1405
def _gen_revision_history(self):
2512
history = self._transport.get_bytes('revision-history').split('\n')
1406
history = self.control_files.get('revision-history').read().split('\n')
2513
1407
if history[-1:] == ['']:
2514
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()
2518
1433
@needs_write_lock
2519
1434
def generate_revision_history(self, revision_id, last_rev=None,
2520
1435
other_branch=None):
2526
1441
:param other_branch: The other branch that DivergedBranches should
2527
1442
raise with respect to.
1444
revision_id = osutils.safe_revision_id(revision_id)
2529
1445
self.set_revision_history(self._lefthand_history(revision_id,
2530
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,
2532
1474
def basis_tree(self):
2533
1475
"""See Branch.basis_tree."""
2534
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']:
2536
1529
def _get_parent_location(self):
2537
1530
_locs = ['parent', 'pull', 'x-pull']
2538
1531
for l in _locs:
2540
return self._transport.get_bytes(l).strip('\n')
2541
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
2545
1607
def _basic_push(self, target, overwrite, stop_revision):
2546
1608
"""Basic implementation of push without bound branches or hooks.
2548
Must be called with source read locked and target write locked.
1610
Must be called with self read locked and target write locked.
2550
result = BranchPushResult()
1612
result = PushResult()
2551
1613
result.source_branch = self
2552
1614
result.target_branch = target
2553
1615
result.old_revno, result.old_revid = target.last_revision_info()
2554
self.update_references(target)
2555
if result.old_revid != self.last_revision():
2556
# We assume that during 'push' this repository is closer than
2558
graph = self.repository.get_graph(target.repository)
2559
target.update_revisions(self, stop_revision,
2560
overwrite=overwrite, graph=graph)
2561
if self._push_should_merge_tags():
2562
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)
2564
1624
result.new_revno, result.new_revid = target.last_revision_info()
2567
def get_stacked_on_url(self):
2568
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)
2570
1643
def set_push_location(self, location):
2571
1644
"""See Branch.set_push_location."""
2573
1646
'push_location', location,
2574
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)
2576
1668
def _set_parent_location(self, url):
2577
1669
if url is None:
2578
self._transport.delete('parent')
1670
self.control_files._transport.delete('parent')
2580
self._transport.put_bytes('parent', url + '\n',
2581
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)
2584
1682
class BzrBranch5(BzrBranch):
2585
"""A format 5 branch. This supports new features over plain branches.
1683
"""A format 5 branch. This supports new features over plan branches.
2587
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()
2590
1725
def get_bound_location(self):
2592
return self._transport.get_bytes('bound')[:-1]
1727
return self.control_files.get_utf8('bound').read()[:-1]
2593
1728
except errors.NoSuchFile:
2596
1731
@needs_read_lock
2597
def get_master_branch(self, possible_transports=None):
1732
def get_master_branch(self):
2598
1733
"""Return the branch we are bound to.
2600
1735
:return: Either a Branch, or None
2602
1737
This could memoise the branch, but if thats done
2682
class BzrBranch8(BzrBranch5):
2683
"""A branch that stores tree-reference locations."""
2685
def _open_hook(self):
2686
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()
2689
url = self.get_stacked_on_url()
2690
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2691
errors.UnstackableBranchFormat):
2694
for hook in Branch.hooks['transform_fallback_location']:
2695
url = hook(self, url)
2697
hook_name = Branch.hooks.get_hook_name(hook)
2698
raise AssertionError(
2699
"'transform_fallback_location' hook %s returned "
2700
"None, not a URL." % hook_name)
2701
self._activate_fallback_location(url)
2703
def __init__(self, *args, **kwargs):
2704
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2705
super(BzrBranch8, self).__init__(*args, **kwargs)
2706
self._last_revision_info_cache = None
2707
self._reference_info = None
2709
def _clear_cached_state(self):
2710
super(BzrBranch8, self)._clear_cached_state()
2711
self._last_revision_info_cache = None
2712
self._reference_info = None
2714
def _last_revision_info(self):
2715
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()
2716
1937
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2717
1938
revision_id = cache_utf8.get_cached_utf8(revision_id)
2718
1939
revno = int(revno)
2719
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]
2721
1947
def _write_last_revision_info(self, revno, revision_id):
2722
1948
"""Simply write out the revision id, with no checks.
2727
1953
Intended to be called by set_last_revision_info and
2728
1954
_write_revision_history.
2730
revision_id = _mod_revision.ensure_null(revision_id)
1956
if revision_id is None:
1957
revision_id = 'null:'
2731
1958
out_string = '%d %s\n' % (revno, revision_id)
2732
self._transport.put_bytes('last-revision', out_string,
2733
mode=self.bzrdir._get_file_mode())
1959
self.control_files.put_bytes('last-revision', out_string)
2735
1961
@needs_write_lock
2736
1962
def set_last_revision_info(self, revno, revision_id):
2737
revision_id = _mod_revision.ensure_null(revision_id)
2738
old_revno, old_revid = self.last_revision_info()
1963
revision_id = osutils.safe_revision_id(revision_id)
2739
1964
if self._get_append_revisions_only():
2740
1965
self._check_history_violation(revision_id)
2741
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2742
1966
self._write_last_revision_info(revno, revision_id)
2743
1967
self._clear_cached_state()
2744
self._last_revision_info_cache = revno, revision_id
2745
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2747
def _synchronize_history(self, destination, revision_id):
2748
"""Synchronize last revision and revision history between branches.
2750
:see: Branch._synchronize_history
2752
# XXX: The base Branch has a fast implementation of this method based
2753
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2754
# that uses set_revision_history. This class inherits from BzrBranch5,
2755
# but wants the fast implementation, so it calls
2756
# Branch._synchronize_history directly.
2757
Branch._synchronize_history(self, destination, revision_id)
2759
1969
def _check_history_violation(self, revision_id):
2760
1970
last_revision = _mod_revision.ensure_null(self.last_revision())
2761
1971
if _mod_revision.is_null(last_revision):
2763
1973
if last_revision not in self._lefthand_history(revision_id):
2764
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1974
raise errors.AppendRevisionsOnlyViolation(self.base)
2766
1976
def _gen_revision_history(self):
2767
1977
"""Generate the revision history from last revision
2769
last_revno, last_revision = self.last_revision_info()
2770
self._extend_partial_history(stop_index=last_revno-1)
2771
return list(reversed(self._partial_revision_history_cache))
1979
history = list(self.repository.iter_reverse_revision_history(
1980
self.last_revision()))
2773
1984
def _write_revision_history(self, history):
2774
1985
"""Factored out of set_revision_history.
2796
2026
"""Set the parent branch"""
2797
2027
return self._get_config_location('parent_location')
2800
def _set_all_reference_info(self, info_dict):
2801
"""Replace all reference info stored in a branch.
2803
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2806
writer = rio.RioWriter(s)
2807
for key, (tree_path, branch_location) in info_dict.iteritems():
2808
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2809
branch_location=branch_location)
2810
writer.write_stanza(stanza)
2811
self._transport.put_bytes('references', s.getvalue())
2812
self._reference_info = info_dict
2815
def _get_all_reference_info(self):
2816
"""Return all the reference info stored in a branch.
2818
:return: A dict of {file_id: (tree_path, branch_location)}
2820
if self._reference_info is not None:
2821
return self._reference_info
2822
rio_file = self._transport.get('references')
2824
stanzas = rio.read_stanzas(rio_file)
2825
info_dict = dict((s['file_id'], (s['tree_path'],
2826
s['branch_location'])) for s in stanzas)
2829
self._reference_info = info_dict
2832
def set_reference_info(self, file_id, tree_path, branch_location):
2833
"""Set the branch location to use for a tree reference.
2835
:param file_id: The file-id of the tree reference.
2836
:param tree_path: The path of the tree reference in the tree.
2837
:param branch_location: The location of the branch to retrieve tree
2840
info_dict = self._get_all_reference_info()
2841
info_dict[file_id] = (tree_path, branch_location)
2842
if None in (tree_path, branch_location):
2843
if tree_path is not None:
2844
raise ValueError('tree_path must be None when branch_location'
2846
if branch_location is not None:
2847
raise ValueError('branch_location must be None when tree_path'
2849
del info_dict[file_id]
2850
self._set_all_reference_info(info_dict)
2852
def get_reference_info(self, file_id):
2853
"""Get the tree_path and branch_location for a tree reference.
2855
:return: a tuple of (tree_path, branch_location)
2857
return self._get_all_reference_info().get(file_id, (None, None))
2859
def reference_parent(self, file_id, path, possible_transports=None):
2860
"""Return the parent branch for a tree-reference file_id.
2862
:param file_id: The file_id of the tree reference
2863
:param path: The path of the file_id in the tree
2864
:return: A branch associated with the file_id
2866
branch_location = self.get_reference_info(file_id)[1]
2867
if branch_location is None:
2868
return Branch.reference_parent(self, file_id, path,
2869
possible_transports)
2870
branch_location = urlutils.join(self.user_url, branch_location)
2871
return Branch.open(branch_location,
2872
possible_transports=possible_transports)
2874
2029
def set_push_location(self, location):
2875
2030
"""See Branch.set_push_location."""
2876
2031
self._set_config_location('push_location', location)
2909
2064
"""See Branch.get_old_bound_location"""
2910
2065
return self._get_bound_location(False)
2912
def get_stacked_on_url(self):
2913
# you can always ask for the URL; but you might not be able to use it
2914
# if the repo can't support stacking.
2915
## self._check_stackable_repo()
2916
stacked_url = self._get_config_location('stacked_on_location')
2917
if stacked_url is None:
2918
raise errors.NotStacked(self)
2067
def set_append_revisions_only(self, enabled):
2072
self.get_config().set_user_option('append_revisions_only', value,
2921
2075
def _get_append_revisions_only(self):
2922
return self.get_config(
2923
).get_user_option_as_bool('append_revisions_only')
2926
def generate_revision_history(self, revision_id, last_rev=None,
2928
"""See BzrBranch5.generate_revision_history"""
2929
history = self._lefthand_history(revision_id, last_rev, other_branch)
2930
revno = len(history)
2931
self.set_last_revision_info(revno, revision_id)
2934
def get_rev_id(self, revno, history=None):
2935
"""Find the revision id of the specified revno."""
2937
return _mod_revision.NULL_REVISION
2939
last_revno, last_revision_id = self.last_revision_info()
2940
if revno <= 0 or revno > last_revno:
2941
raise errors.NoSuchRevision(self, revno)
2943
if history is not None:
2944
return history[revno - 1]
2946
index = last_revno - revno
2947
if len(self._partial_revision_history_cache) <= index:
2948
self._extend_partial_history(stop_index=index)
2949
if len(self._partial_revision_history_cache) > index:
2950
return self._partial_revision_history_cache[index]
2076
value = self.get_config().get_user_option('append_revisions_only')
2077
return value == 'True'
2079
def _synchronize_history(self, destination, revision_id):
2080
"""Synchronize last revision and revision history between branches.
2082
This version is most efficient when the destination is also a
2083
BzrBranch6, but works for BzrBranch5, as long as the destination's
2084
repository contains all the lefthand ancestors of the intended
2085
last_revision. If not, set_last_revision_info will fail.
2087
:param destination: The branch to copy the history into
2088
:param revision_id: The revision-id to truncate history at. May
2089
be None to copy complete history.
2091
if revision_id is None:
2092
revno, revision_id = self.last_revision_info()
2952
raise errors.NoSuchRevision(self, revno)
2955
def revision_id_to_revno(self, revision_id):
2956
"""Given a revision id, return its revno"""
2957
if _mod_revision.is_null(revision_id):
2960
index = self._partial_revision_history_cache.index(revision_id)
2962
self._extend_partial_history(stop_revision=revision_id)
2963
index = len(self._partial_revision_history_cache) - 1
2964
if self._partial_revision_history_cache[index] != revision_id:
2965
raise errors.NoSuchRevision(self, revision_id)
2966
return self.revno() - index
2969
class BzrBranch7(BzrBranch8):
2970
"""A branch with support for a fallback repository."""
2972
def set_reference_info(self, file_id, tree_path, branch_location):
2973
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2975
def get_reference_info(self, file_id):
2976
Branch.get_reference_info(self, file_id)
2978
def reference_parent(self, file_id, path, possible_transports=None):
2979
return Branch.reference_parent(self, file_id, path,
2980
possible_transports)
2983
class BzrBranch6(BzrBranch7):
2984
"""See BzrBranchFormat6 for the capabilities of this branch.
2986
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2990
def get_stacked_on_url(self):
2991
raise errors.UnstackableBranchFormat(self._format, self.user_url)
2094
# To figure out the revno for a random revision, we need to build
2095
# the revision history, and count its length.
2096
# We don't care about the order, just how long it is.
2097
# Alternatively, we could start at the current location, and count
2098
# backwards. But there is no guarantee that we will find it since
2099
# it may be a merged revision.
2100
revno = len(list(self.repository.iter_reverse_revision_history(
2102
destination.set_last_revision_info(revno, revision_id)
2104
def _make_tags(self):
2105
return BasicTags(self)
2994
2108
######################################################################
3105
2206
new_branch.tags._set_tag_dict({})
3107
2208
# Copying done; now update target format
3108
new_branch._transport.put_bytes('format',
3109
format.get_format_string(),
3110
mode=new_branch.bzrdir._get_file_mode())
2209
new_branch.control_files.put_utf8('format',
2210
format.get_format_string())
3112
2212
# Clean up old files
3113
new_branch._transport.delete('revision-history')
2213
new_branch.control_files._transport.delete('revision-history')
3115
2215
branch.set_parent(None)
3116
except errors.NoSuchFile:
3118
2218
branch.set_bound_location(None)
3121
class Converter6to7(object):
3122
"""Perform an in-place upgrade of format 6 to format 7"""
3124
def convert(self, branch):
3125
format = BzrBranchFormat7()
3126
branch._set_config_location('stacked_on_location', '')
3127
# update target format
3128
branch._transport.put_bytes('format', format.get_format_string())
3131
class Converter7to8(object):
3132
"""Perform an in-place upgrade of format 6 to format 7"""
3134
def convert(self, branch):
3135
format = BzrBranchFormat8()
3136
branch._transport.put_bytes('references', '')
3137
# update target format
3138
branch._transport.put_bytes('format', format.get_format_string())
3141
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3142
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3145
_run_with_write_locked_target will attempt to release the lock it acquires.
3147
If an exception is raised by callable, then that exception *will* be
3148
propagated, even if the unlock attempt raises its own error. Thus
3149
_run_with_write_locked_target should be preferred to simply doing::
3153
return callable(*args, **kwargs)
3158
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3159
# should share code?
3162
result = callable(*args, **kwargs)
3164
exc_info = sys.exc_info()
3168
raise exc_info[0], exc_info[1], exc_info[2]
3174
class InterBranch(InterObject):
3175
"""This class represents operations taking place between two branches.
3177
Its instances have methods like pull() and push() and contain
3178
references to the source and target repositories these operations
3179
can be carried out on.
3183
"""The available optimised InterBranch types."""
3186
def _get_branch_formats_to_test():
3187
"""Return a tuple with the Branch formats to use when testing."""
3188
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3190
def pull(self, overwrite=False, stop_revision=None,
3191
possible_transports=None, local=False):
3192
"""Mirror source into target branch.
3194
The target branch is considered to be 'local', having low latency.
3196
:returns: PullResult instance
3198
raise NotImplementedError(self.pull)
3200
def update_revisions(self, stop_revision=None, overwrite=False,
3202
"""Pull in new perfect-fit revisions.
3204
:param stop_revision: Updated until the given revision
3205
:param overwrite: Always set the branch pointer, rather than checking
3206
to see if it is a proper descendant.
3207
:param graph: A Graph object that can be used to query history
3208
information. This can be None.
3211
raise NotImplementedError(self.update_revisions)
3213
def push(self, overwrite=False, stop_revision=None,
3214
_override_hook_source_branch=None):
3215
"""Mirror the source branch into the target branch.
3217
The source branch is considered to be 'local', having low latency.
3219
raise NotImplementedError(self.push)
3222
class GenericInterBranch(InterBranch):
3223
"""InterBranch implementation that uses public Branch functions.
3227
def _get_branch_formats_to_test():
3228
return BranchFormat._default_format, BranchFormat._default_format
3230
def update_revisions(self, stop_revision=None, overwrite=False,
3232
"""See InterBranch.update_revisions()."""
3233
self.source.lock_read()
3235
other_revno, other_last_revision = self.source.last_revision_info()
3236
stop_revno = None # unknown
3237
if stop_revision is None:
3238
stop_revision = other_last_revision
3239
if _mod_revision.is_null(stop_revision):
3240
# if there are no commits, we're done.
3242
stop_revno = other_revno
3244
# what's the current last revision, before we fetch [and change it
3246
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3247
# we fetch here so that we don't process data twice in the common
3248
# case of having something to pull, and so that the check for
3249
# already merged can operate on the just fetched graph, which will
3250
# be cached in memory.
3251
self.target.fetch(self.source, stop_revision)
3252
# Check to see if one is an ancestor of the other
3255
graph = self.target.repository.get_graph()
3256
if self.target._check_if_descendant_or_diverged(
3257
stop_revision, last_rev, graph, self.source):
3258
# stop_revision is a descendant of last_rev, but we aren't
3259
# overwriting, so we're done.
3261
if stop_revno is None:
3263
graph = self.target.repository.get_graph()
3264
this_revno, this_last_revision = \
3265
self.target.last_revision_info()
3266
stop_revno = graph.find_distance_to_null(stop_revision,
3267
[(other_last_revision, other_revno),
3268
(this_last_revision, this_revno)])
3269
self.target.set_last_revision_info(stop_revno, stop_revision)
3271
self.source.unlock()
3273
def pull(self, overwrite=False, stop_revision=None,
3274
possible_transports=None, _hook_master=None, run_hooks=True,
3275
_override_hook_target=None, local=False):
3278
:param _hook_master: Private parameter - set the branch to
3279
be supplied as the master to pull hooks.
3280
:param run_hooks: Private parameter - if false, this branch
3281
is being called because it's the master of the primary branch,
3282
so it should not run its hooks.
3283
:param _override_hook_target: Private parameter - set the branch to be
3284
supplied as the target_branch to pull hooks.
3285
:param local: Only update the local branch, and not the bound branch.
3287
# This type of branch can't be bound.
3289
raise errors.LocalRequiresBoundBranch()
3290
result = PullResult()
3291
result.source_branch = self.source
3292
if _override_hook_target is None:
3293
result.target_branch = self.target
3295
result.target_branch = _override_hook_target
3296
self.source.lock_read()
3298
# We assume that during 'pull' the target repository is closer than
3300
self.source.update_references(self.target)
3301
graph = self.target.repository.get_graph(self.source.repository)
3302
# TODO: Branch formats should have a flag that indicates
3303
# that revno's are expensive, and pull() should honor that flag.
3305
result.old_revno, result.old_revid = \
3306
self.target.last_revision_info()
3307
self.target.update_revisions(self.source, stop_revision,
3308
overwrite=overwrite, graph=graph)
3309
# TODO: The old revid should be specified when merging tags,
3310
# so a tags implementation that versions tags can only
3311
# pull in the most recent changes. -- JRV20090506
3312
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3314
result.new_revno, result.new_revid = self.target.last_revision_info()
3316
result.master_branch = _hook_master
3317
result.local_branch = result.target_branch
3319
result.master_branch = result.target_branch
3320
result.local_branch = None
3322
for hook in Branch.hooks['post_pull']:
3325
self.source.unlock()
3328
def push(self, overwrite=False, stop_revision=None,
3329
_override_hook_source_branch=None):
3330
"""See InterBranch.push.
3332
This is the basic concrete implementation of push()
3334
:param _override_hook_source_branch: If specified, run
3335
the hooks passing this Branch as the source, rather than self.
3336
This is for use of RemoteBranch, where push is delegated to the
3337
underlying vfs-based Branch.
3339
# TODO: Public option to disable running hooks - should be trivial but
3341
self.source.lock_read()
3343
return _run_with_write_locked_target(
3344
self.target, self._push_with_bound_branches, overwrite,
3346
_override_hook_source_branch=_override_hook_source_branch)
3348
self.source.unlock()
3350
def _push_with_bound_branches(self, overwrite, stop_revision,
3351
_override_hook_source_branch=None):
3352
"""Push from source into target, and into target's master if any.
3355
if _override_hook_source_branch:
3356
result.source_branch = _override_hook_source_branch
3357
for hook in Branch.hooks['post_push']:
3360
bound_location = self.target.get_bound_location()
3361
if bound_location and self.target.base != bound_location:
3362
# there is a master branch.
3364
# XXX: Why the second check? Is it even supported for a branch to
3365
# be bound to itself? -- mbp 20070507
3366
master_branch = self.target.get_master_branch()
3367
master_branch.lock_write()
3369
# push into the master from the source branch.
3370
self.source._basic_push(master_branch, overwrite, stop_revision)
3371
# and push into the target branch from the source. Note that we
3372
# push from the source branch again, because its considered the
3373
# highest bandwidth repository.
3374
result = self.source._basic_push(self.target, overwrite,
3376
result.master_branch = master_branch
3377
result.local_branch = self.target
3381
master_branch.unlock()
3384
result = self.source._basic_push(self.target, overwrite,
3386
# TODO: Why set master_branch and local_branch if there's no
3387
# binding? Maybe cleaner to just leave them unset? -- mbp
3389
result.master_branch = self.target
3390
result.local_branch = None
3395
def is_compatible(self, source, target):
3396
# GenericBranch uses the public API, so always compatible
3400
class InterToBranch5(GenericInterBranch):
3403
def _get_branch_formats_to_test():
3404
return BranchFormat._default_format, BzrBranchFormat5()
3406
def pull(self, overwrite=False, stop_revision=None,
3407
possible_transports=None, run_hooks=True,
3408
_override_hook_target=None, local=False):
3409
"""Pull from source into self, updating my master if any.
3411
:param run_hooks: Private parameter - if false, this branch
3412
is being called because it's the master of the primary branch,
3413
so it should not run its hooks.
3415
bound_location = self.target.get_bound_location()
3416
if local and not bound_location:
3417
raise errors.LocalRequiresBoundBranch()
3418
master_branch = None
3419
if not local and bound_location and self.source.user_url != bound_location:
3420
# not pulling from master, so we need to update master.
3421
master_branch = self.target.get_master_branch(possible_transports)
3422
master_branch.lock_write()
3425
# pull from source into master.
3426
master_branch.pull(self.source, overwrite, stop_revision,
3428
return super(InterToBranch5, self).pull(overwrite,
3429
stop_revision, _hook_master=master_branch,
3430
run_hooks=run_hooks,
3431
_override_hook_target=_override_hook_target)
3434
master_branch.unlock()
3437
InterBranch.register_optimiser(GenericInterBranch)
3438
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
