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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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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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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_bzrdir = bzrdir.BzrDir.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_bzrdir.open_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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: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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last_key = (last_revision,)
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known_graph = self.repository.revisions.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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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':
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stop_rev = self.repository.get_revision(stop_revision_id)
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if stop_rev.parent_ids:
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left_parent = stop_rev.parent_ids[0]
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left_parent = _mod_revision.NULL_REVISION
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# left_parent is the actual revision we want to stop logging at,
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# since we want to show the merged revisions after the stop_rev too
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reached_stop_revision_id = False
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revision_id_whitelist = []
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for node in rev_iter:
511
rev_id = node.key[-1]
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if rev_id == left_parent:
513
# reached the left parent after the stop_revision
515
if (not reached_stop_revision_id or
516
rev_id in revision_id_whitelist):
517
yield (rev_id, node.merge_depth, node.revno,
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if reached_stop_revision_id or rev_id == stop_revision_id:
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# only do the merged revs of rev_id from now on
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rev = self.repository.get_revision(rev_id)
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reached_stop_revision_id = True
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revision_id_whitelist.extend(rev.parent_ids)
526
raise ValueError('invalid stop_rule %r' % stop_rule)
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def leave_lock_in_place(self):
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"""Tell this branch object not to release the physical lock when this
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object is unlocked.
532
251
If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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357
The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
360
assert isinstance(revno, int)
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rh = self.revision_history()
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362
if not (1 <= revno <= len(rh)):
645
raise errors.InvalidRevisionNumber(revno)
363
raise InvalidRevisionNumber(revno)
646
364
return self.repository.get_revision_delta(rh[revno-1])
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def get_stacked_on_url(self):
649
"""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
651
:raises NotStacked: If the branch is not stacked.
652
: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.
655
raise NotImplementedError(self.get_stacked_on_url)
373
raise NotImplementedError(self.get_root_id)
657
375
def print_file(self, file, revision_id):
658
376
"""Print `file` to stdout."""
659
377
raise NotImplementedError(self.print_file)
379
def append_revision(self, *revision_ids):
380
raise NotImplementedError(self.append_revision)
661
382
def set_revision_history(self, rev_history):
662
383
raise NotImplementedError(self.set_revision_history)
665
def set_parent(self, url):
666
"""See Branch.set_parent."""
667
# TODO: Maybe delete old location files?
668
# URLs should never be unicode, even on the local fs,
669
# FIXUP this and get_parent in a future branch format bump:
670
# read and rewrite the file. RBC 20060125
672
if isinstance(url, unicode):
674
url = url.encode('ascii')
675
except UnicodeEncodeError:
676
raise errors.InvalidURL(url,
677
"Urls must be 7-bit ascii, "
678
"use bzrlib.urlutils.escape")
679
url = urlutils.relative_url(self.base, url)
680
self._set_parent_location(url)
683
def set_stacked_on_url(self, url):
684
"""Set the URL this branch is stacked against.
686
:raises UnstackableBranchFormat: If the branch does not support
688
:raises UnstackableRepositoryFormat: If the repository does not support
691
if not self._format.supports_stacking():
692
raise errors.UnstackableBranchFormat(self._format, self.base)
693
# XXX: Changing from one fallback repository to another does not check
694
# that all the data you need is present in the new fallback.
695
# Possibly it should.
696
self._check_stackable_repo()
699
old_url = self.get_stacked_on_url()
700
except (errors.NotStacked, errors.UnstackableBranchFormat,
701
errors.UnstackableRepositoryFormat):
705
self._activate_fallback_location(url)
706
# write this out after the repository is stacked to avoid setting a
707
# stacked config that doesn't work.
708
self._set_config_location('stacked_on_location', url)
711
"""Change a branch to be unstacked, copying data as needed.
713
Don't call this directly, use set_stacked_on_url(None).
715
pb = ui.ui_factory.nested_progress_bar()
717
pb.update("Unstacking")
718
# The basic approach here is to fetch the tip of the branch,
719
# including all available ghosts, from the existing stacked
720
# repository into a new repository object without the fallbacks.
722
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
723
# correct for CHKMap repostiories
724
old_repository = self.repository
725
if len(old_repository._fallback_repositories) != 1:
726
raise AssertionError("can't cope with fallback repositories "
727
"of %r" % (self.repository,))
728
# unlock it, including unlocking the fallback
729
old_repository.unlock()
730
old_repository.lock_read()
732
# Repositories don't offer an interface to remove fallback
733
# repositories today; take the conceptually simpler option and just
734
# reopen it. We reopen it starting from the URL so that we
735
# get a separate connection for RemoteRepositories and can
736
# stream from one of them to the other. This does mean doing
737
# separate SSH connection setup, but unstacking is not a
738
# common operation so it's tolerable.
739
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
740
new_repository = new_bzrdir.find_repository()
741
self.repository = new_repository
742
if self.repository._fallback_repositories:
743
raise AssertionError("didn't expect %r to have "
744
"fallback_repositories"
745
% (self.repository,))
746
# this is not paired with an unlock because it's just restoring
747
# the previous state; the lock's released when set_stacked_on_url
749
self.repository.lock_write()
750
# XXX: If you unstack a branch while it has a working tree
751
# with a pending merge, the pending-merged revisions will no
752
# longer be present. You can (probably) revert and remerge.
754
# XXX: This only fetches up to the tip of the repository; it
755
# doesn't bring across any tags. That's fairly consistent
756
# with how branch works, but perhaps not ideal.
757
self.repository.fetch(old_repository,
758
revision_id=self.last_revision(),
761
old_repository.unlock()
765
def _set_tags_bytes(self, bytes):
766
"""Mirror method for _get_tags_bytes.
768
:seealso: Branch._get_tags_bytes.
770
return _run_with_write_locked_target(self, self._transport.put_bytes,
773
385
def _cache_revision_history(self, rev_history):
774
386
"""Set the cached revision history to rev_history.
884
491
common_index = min(self_len, other_len) -1
885
492
if common_index >= 0 and \
886
493
self_history[common_index] != other_history[common_index]:
887
raise errors.DivergedBranches(self, other)
494
raise DivergedBranches(self, other)
889
496
if stop_revision is None:
890
497
stop_revision = other_len
499
assert isinstance(stop_revision, int)
892
500
if stop_revision > other_len:
893
501
raise errors.NoSuchRevision(self, stop_revision)
894
502
return other_history[self_len:stop_revision]
897
def update_revisions(self, other, stop_revision=None, overwrite=False,
504
def update_revisions(self, other, stop_revision=None):
899
505
"""Pull in new perfect-fit revisions.
901
507
:param other: Another Branch to pull from
902
508
:param stop_revision: Updated until the given revision
903
:param overwrite: Always set the branch pointer, rather than checking
904
to see if it is a proper descendant.
905
:param graph: A Graph object that can be used to query history
906
information. This can be None.
909
return InterBranch.get(other, self).update_revisions(stop_revision,
912
def import_last_revision_info(self, source_repo, revno, revid):
913
"""Set the last revision info, importing from another repo if necessary.
915
This is used by the bound branch code to upload a revision to
916
the master branch first before updating the tip of the local branch.
918
:param source_repo: Source repository to optionally fetch from
919
:param revno: Revision number of the new tip
920
:param revid: Revision id of the new tip
922
if not self.repository.has_same_location(source_repo):
923
self.repository.fetch(source_repo, revision_id=revid)
924
self.set_last_revision_info(revno, revid)
511
raise NotImplementedError(self.update_revisions)
926
513
def revision_id_to_revno(self, revision_id):
927
514
"""Given a revision id, return its revno"""
928
515
if _mod_revision.is_null(revision_id):
517
revision_id = osutils.safe_revision_id(revision_id)
930
518
history = self.revision_history()
932
520
return history.index(revision_id) + 1
933
521
except ValueError:
934
522
raise errors.NoSuchRevision(self, revision_id)
937
524
def get_rev_id(self, revno, history=None):
938
525
"""Find the revision id of the specified revno."""
940
return _mod_revision.NULL_REVISION
941
last_revno, last_revid = self.last_revision_info()
942
if revno == last_revno:
944
if revno <= 0 or revno > last_revno:
529
history = self.revision_history()
530
if revno <= 0 or revno > len(history):
945
531
raise errors.NoSuchRevision(self, revno)
946
distance_from_last = last_revno - revno
947
if len(self._partial_revision_history_cache) <= distance_from_last:
948
self._extend_partial_history(distance_from_last)
949
return self._partial_revision_history_cache[distance_from_last]
532
return history[revno - 1]
952
def pull(self, source, overwrite=False, stop_revision=None,
953
possible_transports=None, *args, **kwargs):
534
def pull(self, source, overwrite=False, stop_revision=None):
954
535
"""Mirror source into this branch.
956
537
This branch is considered to be 'local', having low latency.
958
539
:returns: PullResult instance
960
return InterBranch.get(source, self).pull(overwrite=overwrite,
961
stop_revision=stop_revision,
962
possible_transports=possible_transports, *args, **kwargs)
541
raise NotImplementedError(self.pull)
964
def push(self, target, overwrite=False, stop_revision=None, *args,
543
def push(self, target, overwrite=False, stop_revision=None):
966
544
"""Mirror this branch into target.
968
546
This branch is considered to be 'local', having low latency.
970
return InterBranch.get(self, target).push(overwrite, stop_revision,
973
def lossy_push(self, target, stop_revision=None):
974
"""Push deltas into another branch.
976
:note: This does not, like push, retain the revision ids from
977
the source branch and will, rather than adding bzr-specific
978
metadata, push only those semantics of the revision that can be
979
natively represented by this branch' VCS.
981
:param target: Target branch
982
:param stop_revision: Revision to push, defaults to last revision.
983
:return: BranchPushResult with an extra member revidmap:
984
A dictionary mapping revision ids from the target branch
985
to new revision ids in the target branch, for each
986
revision that was pushed.
988
inter = InterBranch.get(self, target)
989
lossy_push = getattr(inter, "lossy_push", None)
990
if lossy_push is None:
991
raise errors.LossyPushToSameVCS(self, target)
992
return lossy_push(stop_revision)
548
raise NotImplementedError(self.push)
994
550
def basis_tree(self):
995
551
"""Return `Tree` object for last revision."""
996
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)
998
577
def get_parent(self):
999
578
"""Return the parent location of the branch.
1001
This is the default location for pull/missing. The usual
580
This is the default location for push/pull/missing. The usual
1002
581
pattern is that the user can override it by specifying a
1005
parent = self._get_parent_location()
1008
# This is an old-format absolute path to a local branch
1009
# turn it into a url
1010
if parent.startswith('/'):
1011
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1013
return urlutils.join(self.base[:-1], parent)
1014
except errors.InvalidURLJoin, e:
1015
raise errors.InaccessibleParent(parent, self.base)
1017
def _get_parent_location(self):
1018
raise NotImplementedError(self._get_parent_location)
584
raise NotImplementedError(self.get_parent)
1020
586
def _set_config_location(self, name, url, config=None,
1021
587
make_relative=False):
1122
665
self.check_real_revno(revno)
1124
667
def check_real_revno(self, revno):
1126
669
Check whether a revno corresponds to a real revision.
1127
670
Zero (the NULL revision) is considered invalid
1129
672
if revno < 1 or revno > self.revno():
1130
raise errors.InvalidRevisionNumber(revno)
673
raise InvalidRevisionNumber(revno)
1132
675
@needs_read_lock
1133
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
676
def clone(self, to_bzrdir, revision_id=None):
1134
677
"""Clone this branch into to_bzrdir preserving all semantic values.
1136
Most API users will want 'create_clone_on_transport', which creates a
1137
new bzrdir and branch on the fly.
1139
679
revision_id: if not None, the revision history in the new branch will
1140
680
be truncated to end with revision_id.
1142
result = to_bzrdir.create_branch()
1145
if repository_policy is not None:
1146
repository_policy.configure_branch(result)
1147
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)
1152
686
@needs_read_lock
1153
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
687
def sprout(self, to_bzrdir, revision_id=None):
1154
688
"""Create a new line of development from the branch, into to_bzrdir.
1156
to_bzrdir controls the branch format.
1158
690
revision_id: if not None, the revision history in the new branch will
1159
691
be truncated to end with revision_id.
1161
if (repository_policy is not None and
1162
repository_policy.requires_stacking()):
1163
to_bzrdir._format.require_stacking(_skip_repo=True)
1164
result = to_bzrdir.create_branch()
1167
if repository_policy is not None:
1168
repository_policy.configure_branch(result)
1169
self.copy_content_into(result, revision_id=revision_id)
1170
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)
1175
698
def _synchronize_history(self, destination, revision_id):
1176
699
"""Synchronize last revision and revision history between branches.
1178
701
This version is most efficient when the destination is also a
1179
BzrBranch6, but works for BzrBranch5, as long as the destination's
1180
repository contains all the lefthand ancestors of the intended
1181
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
1183
707
:param destination: The branch to copy the history into
1184
708
:param revision_id: The revision-id to truncate history at. May
1185
709
be None to copy complete history.
1187
source_revno, source_revision_id = self.last_revision_info()
1188
if revision_id is None:
1189
revno, revision_id = source_revno, source_revision_id
1191
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)
1193
revno = graph.find_distance_to_null(revision_id,
1194
[(source_revision_id, source_revno)])
1195
except errors.GhostRevisionsHaveNoRevno:
1196
# Default to 1, if we can't find anything else
1198
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)
1200
723
@needs_read_lock
1201
724
def copy_content_into(self, destination, revision_id=None):
1215
737
destination.set_parent(parent)
1216
if self._push_should_merge_tags():
1217
self.tags.merge_to(destination.tags)
1219
def update_references(self, target):
1220
if not getattr(self._format, 'supports_reference_locations', False):
1222
reference_dict = self._get_all_reference_info()
1223
if len(reference_dict) == 0:
1225
old_base = self.base
1226
new_base = target.base
1227
target_reference_dict = target._get_all_reference_info()
1228
for file_id, (tree_path, branch_location) in (
1229
reference_dict.items()):
1230
branch_location = urlutils.rebase_url(branch_location,
1232
target_reference_dict.setdefault(
1233
file_id, (tree_path, branch_location))
1234
target._set_all_reference_info(target_reference_dict)
738
self.tags.merge_to(destination.tags)
1236
740
@needs_read_lock
1237
def check(self, refs):
1238
742
"""Check consistency of the branch.
1240
744
In particular this checks that revisions given in the revision-history
1241
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
1242
746
present in the repository.
1244
748
Callers will typically also want to check the repository.
1246
:param refs: Calculated refs for this branch as specified by
1247
branch._get_check_refs()
1248
750
:return: A BranchCheckResult.
1250
result = BranchCheckResult(self)
1251
last_revno, last_revision_id = self.last_revision_info()
1252
actual_revno = refs[('lefthand-distance', last_revision_id)]
1253
if actual_revno != last_revno:
1254
result.errors.append(errors.BzrCheckError(
1255
'revno does not match len(mainline) %s != %s' % (
1256
last_revno, actual_revno)))
1257
# TODO: We should probably also check that self.revision_history
1258
# matches the repository for older branch formats.
1259
# If looking for the code that cross-checks repository parents against
1260
# 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)
1264
770
def _get_checkout_format(self):
1265
771
"""Return the most suitable metadir for a checkout of this branch.
1344
818
basis_tree.unlock()
1348
def reconcile(self, thorough=True):
1349
"""Make sure the data stored in this branch is consistent."""
1350
from bzrlib.reconcile import BranchReconciler
1351
reconciler = BranchReconciler(self, thorough=thorough)
1352
reconciler.reconcile()
1355
def reference_parent(self, file_id, path, possible_transports=None):
821
def reference_parent(self, file_id, path):
1356
822
"""Return the parent branch for a tree-reference file_id
1357
823
:param file_id: The file_id of the tree reference
1358
824
:param path: The path of the file_id in the tree
1359
825
:return: A branch associated with the file_id
1361
827
# FIXME should provide multiple branches, based on config
1362
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1363
possible_transports=possible_transports)
828
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1365
830
def supports_tags(self):
1366
831
return self._format.supports_tags()
1368
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1370
"""Ensure that revision_b is a descendant of revision_a.
1372
This is a helper function for update_revisions.
1374
:raises: DivergedBranches if revision_b has diverged from revision_a.
1375
:returns: True if revision_b is a descendant of revision_a.
1377
relation = self._revision_relations(revision_a, revision_b, graph)
1378
if relation == 'b_descends_from_a':
1380
elif relation == 'diverged':
1381
raise errors.DivergedBranches(self, other_branch)
1382
elif relation == 'a_descends_from_b':
1385
raise AssertionError("invalid relation: %r" % (relation,))
1387
def _revision_relations(self, revision_a, revision_b, graph):
1388
"""Determine the relationship between two revisions.
1390
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1392
heads = graph.heads([revision_a, revision_b])
1393
if heads == set([revision_b]):
1394
return 'b_descends_from_a'
1395
elif heads == set([revision_a, revision_b]):
1396
# These branches have diverged
1398
elif heads == set([revision_a]):
1399
return 'a_descends_from_b'
1401
raise AssertionError("invalid heads: %r" % (heads,))
1404
834
class BranchFormat(object):
1405
835
"""An encapsulation of the initialization and open routines for a format.
1533
938
"""Is this format supported?
1535
940
Supported formats can be initialized and opened.
1536
Unsupported formats may not support initialization or committing or
941
Unsupported formats may not support initialization or committing or
1537
942
some other features depending on the reason for not being supported.
1541
def make_tags(self, branch):
1542
"""Create a tags object for branch.
1544
This method is on BranchFormat, because BranchFormats are reflected
1545
over the wire via network_name(), whereas full Branch instances require
1546
multiple VFS method calls to operate at all.
1548
The default implementation returns a disabled-tags instance.
1550
Note that it is normal for branch to be a RemoteBranch when using tags
1553
return DisabledTags(branch)
1555
def network_name(self):
1556
"""A simple byte string uniquely identifying this format for RPC calls.
1558
MetaDir branch formats use their disk format string to identify the
1559
repository over the wire. All in one formats such as bzr < 0.8, and
1560
foreign formats like svn/git and hg should use some marker which is
1561
unique and immutable.
1563
raise NotImplementedError(self.network_name)
1565
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
946
def open(self, a_bzrdir, _found=False):
1566
947
"""Return the branch object for a_bzrdir
1568
:param a_bzrdir: A BzrDir that contains a branch.
1569
:param _found: a private parameter, do not use it. It is used to
1570
indicate if format probing has already be done.
1571
:param ignore_fallbacks: when set, no fallback branches will be opened
1572
(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.
1574
952
raise NotImplementedError(self.open)
1577
955
def register_format(klass, format):
1578
"""Register a metadir format."""
1579
956
klass._formats[format.get_format_string()] = format
1580
# Metadir formats have a network name of their format string, and get
1581
# registered as class factories.
1582
network_format_registry.register(format.get_format_string(), format.__class__)
1585
959
def set_default_format(klass, format):
1586
960
klass._default_format = format
1588
def supports_set_append_revisions_only(self):
1589
"""True if this format supports set_append_revisions_only."""
1592
def supports_stacking(self):
1593
"""True if this format records a stacked-on branch."""
1597
963
def unregister_format(klass, format):
964
assert klass._formats[format.get_format_string()] is format
1598
965
del klass._formats[format.get_format_string()]
1600
967
def __str__(self):
1601
return self.get_format_description().rstrip()
968
return self.get_format_string().rstrip()
1603
970
def supports_tags(self):
1604
971
"""True if this format supports tags stored in the branch"""
1605
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()
1608
989
class BranchHooks(Hooks):
1609
990
"""A dictionary mapping hook name to a list of callables for branch hooks.
1611
992
e.g. ['set_rh'] Is the list of items to be called when the
1612
993
set_revision_history function is invoked.
1621
1002
Hooks.__init__(self)
1622
self.create_hook(HookPoint('set_rh',
1623
"Invoked whenever the revision history has been set via "
1624
"set_revision_history. The api signature is (branch, "
1625
"revision_history), and the branch will be write-locked. "
1626
"The set_rh hook can be expensive for bzr to trigger, a better "
1627
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1628
self.create_hook(HookPoint('open',
1629
"Called with the Branch object that has been opened after a "
1630
"branch is opened.", (1, 8), None))
1631
self.create_hook(HookPoint('post_push',
1632
"Called after a push operation completes. post_push is called "
1633
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1634
"bzr client.", (0, 15), None))
1635
self.create_hook(HookPoint('post_pull',
1636
"Called after a pull operation completes. post_pull is called "
1637
"with a bzrlib.branch.PullResult object and only runs in the "
1638
"bzr client.", (0, 15), None))
1639
self.create_hook(HookPoint('pre_commit',
1640
"Called after a commit is calculated but before it is is "
1641
"completed. pre_commit is called with (local, master, old_revno, "
1642
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1643
"). old_revid is NULL_REVISION for the first commit to a branch, "
1644
"tree_delta is a TreeDelta object describing changes from the "
1645
"basis revision. hooks MUST NOT modify this delta. "
1646
" future_tree is an in-memory tree obtained from "
1647
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1648
"tree.", (0,91), None))
1649
self.create_hook(HookPoint('post_commit',
1650
"Called in the bzr client after a commit has completed. "
1651
"post_commit is called with (local, master, old_revno, old_revid, "
1652
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1653
"commit to a branch.", (0, 15), None))
1654
self.create_hook(HookPoint('post_uncommit',
1655
"Called in the bzr client after an uncommit completes. "
1656
"post_uncommit is called with (local, master, old_revno, "
1657
"old_revid, new_revno, new_revid) where local is the local branch "
1658
"or None, master is the target branch, and an empty branch "
1659
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1660
self.create_hook(HookPoint('pre_change_branch_tip',
1661
"Called in bzr client and server before a change to the tip of a "
1662
"branch is made. pre_change_branch_tip is called with a "
1663
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1664
"commit, uncommit will all trigger this hook.", (1, 6), None))
1665
self.create_hook(HookPoint('post_change_branch_tip',
1666
"Called in bzr client and server after a change to the tip of a "
1667
"branch is made. post_change_branch_tip is called with a "
1668
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1669
"commit, uncommit will all trigger this hook.", (1, 4), None))
1670
self.create_hook(HookPoint('transform_fallback_location',
1671
"Called when a stacked branch is activating its fallback "
1672
"locations. transform_fallback_location is called with (branch, "
1673
"url), and should return a new url. Returning the same url "
1674
"allows it to be used as-is, returning a different one can be "
1675
"used to cause the branch to stack on a closer copy of that "
1676
"fallback_location. Note that the branch cannot have history "
1677
"accessing methods called on it during this hook because the "
1678
"fallback locations have not been activated. When there are "
1679
"multiple hooks installed for transform_fallback_location, "
1680
"all are called with the url returned from the previous hook."
1681
"The order is however undefined.", (1, 9), 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'] = []
1684
1042
# install the default hooks into the Branch class.
1685
1043
Branch.hooks = BranchHooks()
1688
class ChangeBranchTipParams(object):
1689
"""Object holding parameters passed to *_change_branch_tip hooks.
1691
There are 5 fields that hooks may wish to access:
1693
:ivar branch: the branch being changed
1694
:ivar old_revno: revision number before the change
1695
:ivar new_revno: revision number after the change
1696
:ivar old_revid: revision id before the change
1697
:ivar new_revid: revision id after the change
1699
The revid fields are strings. The revno fields are integers.
1702
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1703
"""Create a group of ChangeBranchTip parameters.
1705
:param branch: The branch being changed.
1706
:param old_revno: Revision number before the change.
1707
:param new_revno: Revision number after the change.
1708
:param old_revid: Tip revision id before the change.
1709
:param new_revid: Tip revision id after the change.
1711
self.branch = branch
1712
self.old_revno = old_revno
1713
self.new_revno = new_revno
1714
self.old_revid = old_revid
1715
self.new_revid = new_revid
1717
def __eq__(self, other):
1718
return self.__dict__ == other.__dict__
1721
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1722
self.__class__.__name__, self.branch,
1723
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1726
1046
class BzrBranchFormat4(BranchFormat):
1727
1047
"""Bzr branch format 4.
1765
1085
return "Bazaar-NG branch format 4"
1768
class BranchFormatMetadir(BranchFormat):
1769
"""Common logic for meta-dir based branch formats."""
1771
def _branch_class(self):
1772
"""What class to instantiate on open calls."""
1773
raise NotImplementedError(self._branch_class)
1775
def network_name(self):
1776
"""A simple byte string uniquely identifying this format for RPC calls.
1778
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.
1780
return self.get_format_string()
1782
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
1783
"""See BranchFormat.open()."""
1785
1127
format = BranchFormat.find_format(a_bzrdir)
1786
if format.__class__ != self.__class__:
1787
raise AssertionError("wrong format %r found for %r" %
1128
assert format.__class__ == self.__class__
1790
1130
transport = a_bzrdir.get_branch_transport(None)
1791
1131
control_files = lockable_files.LockableFiles(transport, 'lock',
1792
1132
lockdir.LockDir)
1793
return self._branch_class()(_format=self,
1133
return BzrBranch5(_format=self,
1794
1134
_control_files=control_files,
1795
1135
a_bzrdir=a_bzrdir,
1796
_repository=a_bzrdir.find_repository(),
1797
ignore_fallbacks=ignore_fallbacks)
1798
except errors.NoSuchFile:
1799
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1802
super(BranchFormatMetadir, self).__init__()
1803
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1804
self._matchingbzrdir.set_branch_format(self)
1806
def supports_tags(self):
1810
class BzrBranchFormat5(BranchFormatMetadir):
1811
"""Bzr branch format 5.
1814
- a revision-history file.
1816
- a lock dir guarding the branch itself
1817
- all of this stored in a branch/ subdirectory
1818
- works with shared repositories.
1820
This format is new in bzr 0.8.
1823
def _branch_class(self):
1826
def get_format_string(self):
1827
"""See BranchFormat.get_format_string()."""
1828
return "Bazaar-NG branch format 5\n"
1830
def get_format_description(self):
1831
"""See BranchFormat.get_format_description()."""
1832
return "Branch format 5"
1834
def initialize(self, a_bzrdir):
1835
"""Create a branch of this format in a_bzrdir."""
1836
utf8_files = [('revision-history', ''),
1837
('branch-name', ''),
1839
return self._initialize_helper(a_bzrdir, utf8_files)
1841
def supports_tags(self):
1845
class BzrBranchFormat6(BranchFormatMetadir):
1846
"""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
1848
1144
Unlike previous formats, this has no explicit revision history. Instead,
1849
1145
this just stores the last-revision, and the left-hand history leading
1850
1146
up to there is the history.
1852
1148
This format was introduced in bzr 0.15
1853
and became the default in 0.91.
1856
def _branch_class(self):
1859
1151
def get_format_string(self):
1860
1152
"""See BranchFormat.get_format_string()."""
1861
1153
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1867
1159
def initialize(self, a_bzrdir):
1868
1160
"""Create a branch of this format in a_bzrdir."""
1869
1161
utf8_files = [('last-revision', '0 null:\n'),
1870
('branch.conf', ''),
1873
return self._initialize_helper(a_bzrdir, utf8_files)
1875
def make_tags(self, branch):
1876
"""See bzrlib.branch.BranchFormat.make_tags()."""
1877
return BasicTags(branch)
1879
def supports_set_append_revisions_only(self):
1883
class BzrBranchFormat8(BranchFormatMetadir):
1884
"""Metadir format supporting storing locations of subtree branches."""
1886
def _branch_class(self):
1889
def get_format_string(self):
1890
"""See BranchFormat.get_format_string()."""
1891
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1893
def get_format_description(self):
1894
"""See BranchFormat.get_format_description()."""
1895
return "Branch format 8"
1897
def initialize(self, a_bzrdir):
1898
"""Create a branch of this format in a_bzrdir."""
1899
utf8_files = [('last-revision', '0 null:\n'),
1900
('branch.conf', ''),
1904
return self._initialize_helper(a_bzrdir, utf8_files)
1907
super(BzrBranchFormat8, self).__init__()
1908
self._matchingbzrdir.repository_format = \
1909
RepositoryFormatKnitPack5RichRoot()
1911
def make_tags(self, branch):
1912
"""See bzrlib.branch.BranchFormat.make_tags()."""
1913
return BasicTags(branch)
1915
def supports_set_append_revisions_only(self):
1918
def supports_stacking(self):
1921
supports_reference_locations = True
1924
class BzrBranchFormat7(BzrBranchFormat8):
1925
"""Branch format with last-revision, tags, and a stacked location pointer.
1927
The stacked location pointer is passed down to the repository and requires
1928
a repository format with supports_external_lookups = True.
1930
This format was introduced in bzr 1.6.
1933
def initialize(self, a_bzrdir):
1934
"""Create a branch of this format in a_bzrdir."""
1935
utf8_files = [('last-revision', '0 null:\n'),
1936
('branch.conf', ''),
1939
return self._initialize_helper(a_bzrdir, utf8_files)
1941
def _branch_class(self):
1944
def get_format_string(self):
1945
"""See BranchFormat.get_format_string()."""
1946
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
1948
def get_format_description(self):
1949
"""See BranchFormat.get_format_description()."""
1950
return "Branch format 7"
1952
def supports_set_append_revisions_only(self):
1955
supports_reference_locations = False
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):
1958
1189
class BranchReferenceFormat(BranchFormat):
2054
network_format_registry = registry.FormatRegistry()
2055
"""Registry of formats indexed by their network name.
2057
The network name for a branch format is an identifier that can be used when
2058
referring to formats with smart server operations. See
2059
BranchFormat.network_name() for more detail.
2063
1265
# formats which have no format string are not discoverable
2064
1266
# and not independently creatable, so are not registered.
2065
__format5 = BzrBranchFormat5()
2066
__format6 = BzrBranchFormat6()
2067
__format7 = BzrBranchFormat7()
2068
__format8 = BzrBranchFormat8()
2069
BranchFormat.register_format(__format5)
1267
__default_format = BzrBranchFormat5()
1268
BranchFormat.register_format(__default_format)
2070
1269
BranchFormat.register_format(BranchReferenceFormat())
2071
BranchFormat.register_format(__format6)
2072
BranchFormat.register_format(__format7)
2073
BranchFormat.register_format(__format8)
2074
BranchFormat.set_default_format(__format7)
1270
BranchFormat.register_format(BzrBranchFormat6())
1271
BranchFormat.set_default_format(__default_format)
2075
1272
_legacy_formats = [BzrBranchFormat4(),
2077
network_format_registry.register(
2078
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2081
class BzrBranch(Branch, _RelockDebugMixin):
1275
class BzrBranch(Branch):
2082
1276
"""A branch stored in the actual filesystem.
2084
1278
Note that it's "local" in the context of the filesystem; it doesn't
2085
1279
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2086
1280
it's writable, and can be accessed via the normal filesystem API.
2088
:ivar _transport: Transport for file operations on this branch's
2089
control files, typically pointing to the .bzr/branch directory.
2090
:ivar repository: Repository for this branch.
2091
:ivar base: The url of the base directory for this branch; the one
2092
containing the .bzr directory.
2095
1283
def __init__(self, _format=None,
2096
_control_files=None, a_bzrdir=None, _repository=None,
2097
ignore_fallbacks=False):
1284
_control_files=None, a_bzrdir=None, _repository=None):
2098
1285
"""Create new branch object at a particular location."""
1286
Branch.__init__(self)
2099
1287
if a_bzrdir is None:
2100
1288
raise ValueError('a_bzrdir must be supplied')
2102
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
2103
1294
self._base = self.bzrdir.transport.clone('..').base
2104
# XXX: We should be able to just do
2105
# self.base = self.bzrdir.root_transport.base
2106
# but this does not quite work yet -- mbp 20080522
2107
1295
self._format = _format
2108
1296
if _control_files is None:
2109
1297
raise ValueError('BzrBranch _control_files is None')
2110
1298
self.control_files = _control_files
2111
1299
self._transport = _control_files._transport
2112
1300
self.repository = _repository
2113
Branch.__init__(self)
2115
1302
def __str__(self):
2116
1303
return '%s(%r)' % (self.__class__.__name__, self.base)
2193
1366
"""See Branch.print_file."""
2194
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)
2196
1380
def _write_revision_history(self, history):
2197
1381
"""Factored out of set_revision_history.
2199
1383
This performs the actual writing to disk.
2200
1384
It is intended to be called by BzrBranch5.set_revision_history."""
2201
self._transport.put_bytes(
2202
'revision-history', '\n'.join(history),
2203
mode=self.bzrdir._get_file_mode())
1385
self.control_files.put_bytes(
1386
'revision-history', '\n'.join(history))
2205
1388
@needs_write_lock
2206
1389
def set_revision_history(self, rev_history):
2207
1390
"""See Branch.set_revision_history."""
2208
if 'evil' in debug.debug_flags:
2209
mutter_callsite(3, "set_revision_history scales with history.")
2210
check_not_reserved_id = _mod_revision.check_not_reserved_id
2211
for rev_id in rev_history:
2212
check_not_reserved_id(rev_id)
2213
if Branch.hooks['post_change_branch_tip']:
2214
# Don't calculate the last_revision_info() if there are no hooks
2216
old_revno, old_revid = self.last_revision_info()
2217
if len(rev_history) == 0:
2218
revid = _mod_revision.NULL_REVISION
2220
revid = rev_history[-1]
2221
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()
2222
1393
self._write_revision_history(rev_history)
2223
self._clear_cached_state()
2224
1394
self._cache_revision_history(rev_history)
2225
1395
for hook in Branch.hooks['set_rh']:
2226
1396
hook(self, rev_history)
2227
if Branch.hooks['post_change_branch_tip']:
2228
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2230
def _synchronize_history(self, destination, revision_id):
2231
"""Synchronize last revision and revision history between branches.
2233
This version is most efficient when the destination is also a
2234
BzrBranch5, but works for BzrBranch6 as long as the revision
2235
history is the true lefthand parent history, and all of the revisions
2236
are in the destination's repository. If not, set_revision_history
2239
:param destination: The branch to copy the history into
2240
:param revision_id: The revision-id to truncate history at. May
2241
be None to copy complete history.
2243
if not isinstance(destination._format, BzrBranchFormat5):
2244
super(BzrBranch, self)._synchronize_history(
2245
destination, revision_id)
2247
if revision_id == _mod_revision.NULL_REVISION:
2250
new_history = self.revision_history()
2251
if revision_id is not None and new_history != []:
2253
new_history = new_history[:new_history.index(revision_id) + 1]
2255
rev = self.repository.get_revision(revision_id)
2256
new_history = rev.get_history(self.repository)[1:]
2257
destination.set_revision_history(new_history)
2259
1398
@needs_write_lock
2260
1399
def set_last_revision_info(self, revno, revision_id):
2261
"""Set the last revision of this branch.
2263
The caller is responsible for checking that the revno is correct
2264
for this revision id.
2266
It may be possible to set the branch last revision to an id not
2267
present in the repository. However, branches can also be
2268
configured to check constraints on history, in which case this may not
2271
revision_id = _mod_revision.ensure_null(revision_id)
2272
# this old format stores the full history, but this api doesn't
2273
# provide it, so we must generate, and might as well check it's
1400
revision_id = osutils.safe_revision_id(revision_id)
2275
1401
history = self._lefthand_history(revision_id)
2276
if len(history) != revno:
2277
raise AssertionError('%d != %d' % (len(history), revno))
1402
assert len(history) == revno, '%d != %d' % (len(history), revno)
2278
1403
self.set_revision_history(history)
2280
1405
def _gen_revision_history(self):
2281
history = self._transport.get_bytes('revision-history').split('\n')
1406
history = self.control_files.get('revision-history').read().split('\n')
2282
1407
if history[-1:] == ['']:
2283
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()
2287
1433
@needs_write_lock
2288
1434
def generate_revision_history(self, revision_id, last_rev=None,
2289
1435
other_branch=None):
2295
1441
:param other_branch: The other branch that DivergedBranches should
2296
1442
raise with respect to.
1444
revision_id = osutils.safe_revision_id(revision_id)
2298
1445
self.set_revision_history(self._lefthand_history(revision_id,
2299
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,
2301
1474
def basis_tree(self):
2302
1475
"""See Branch.basis_tree."""
2303
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']:
2305
1529
def _get_parent_location(self):
2306
1530
_locs = ['parent', 'pull', 'x-pull']
2307
1531
for l in _locs:
2309
return self._transport.get_bytes(l).strip('\n')
2310
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
2314
1607
def _basic_push(self, target, overwrite, stop_revision):
2315
1608
"""Basic implementation of push without bound branches or hooks.
2317
Must be called with source read locked and target write locked.
1610
Must be called with self read locked and target write locked.
2319
result = BranchPushResult()
1612
result = PushResult()
2320
1613
result.source_branch = self
2321
1614
result.target_branch = target
2322
1615
result.old_revno, result.old_revid = target.last_revision_info()
2323
self.update_references(target)
2324
if result.old_revid != self.last_revision():
2325
# We assume that during 'push' this repository is closer than
2327
graph = self.repository.get_graph(target.repository)
2328
target.update_revisions(self, stop_revision,
2329
overwrite=overwrite, graph=graph)
2330
if self._push_should_merge_tags():
2331
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)
2333
1624
result.new_revno, result.new_revid = target.last_revision_info()
2336
def get_stacked_on_url(self):
2337
raise errors.UnstackableBranchFormat(self._format, self.base)
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)
2339
1643
def set_push_location(self, location):
2340
1644
"""See Branch.set_push_location."""
2342
1646
'push_location', location,
2343
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)
2345
1668
def _set_parent_location(self, url):
2346
1669
if url is None:
2347
self._transport.delete('parent')
1670
self.control_files._transport.delete('parent')
2349
self._transport.put_bytes('parent', url + '\n',
2350
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)
2353
1682
class BzrBranch5(BzrBranch):
2354
"""A format 5 branch. This supports new features over plain branches.
1683
"""A format 5 branch. This supports new features over plan branches.
2356
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()
2359
1725
def get_bound_location(self):
2361
return self._transport.get_bytes('bound')[:-1]
1727
return self.control_files.get_utf8('bound').read()[:-1]
2362
1728
except errors.NoSuchFile:
2365
1731
@needs_read_lock
2366
def get_master_branch(self, possible_transports=None):
1732
def get_master_branch(self):
2367
1733
"""Return the branch we are bound to.
2369
1735
:return: Either a Branch, or None
2371
1737
This could memoise the branch, but if thats done
2451
class BzrBranch8(BzrBranch5):
2452
"""A branch that stores tree-reference locations."""
2454
def _open_hook(self):
2455
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()
2458
url = self.get_stacked_on_url()
2459
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2460
errors.UnstackableBranchFormat):
2463
for hook in Branch.hooks['transform_fallback_location']:
2464
url = hook(self, url)
2466
hook_name = Branch.hooks.get_hook_name(hook)
2467
raise AssertionError(
2468
"'transform_fallback_location' hook %s returned "
2469
"None, not a URL." % hook_name)
2470
self._activate_fallback_location(url)
2472
def __init__(self, *args, **kwargs):
2473
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2474
super(BzrBranch8, self).__init__(*args, **kwargs)
2475
self._last_revision_info_cache = None
2476
self._reference_info = None
2478
def _clear_cached_state(self):
2479
super(BzrBranch8, self)._clear_cached_state()
2480
self._last_revision_info_cache = None
2481
self._reference_info = None
2483
def _last_revision_info(self):
2484
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()
2485
1937
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2486
1938
revision_id = cache_utf8.get_cached_utf8(revision_id)
2487
1939
revno = int(revno)
2488
1940
return revno, revision_id
1942
def last_revision(self):
1943
"""Return last revision id, or None"""
1944
revision_id = self.last_revision_info()[1]
1945
if revision_id == _mod_revision.NULL_REVISION:
2490
1949
def _write_last_revision_info(self, revno, revision_id):
2491
1950
"""Simply write out the revision id, with no checks.
2565
2028
"""Set the parent branch"""
2566
2029
return self._get_config_location('parent_location')
2569
def _set_all_reference_info(self, info_dict):
2570
"""Replace all reference info stored in a branch.
2572
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2575
writer = rio.RioWriter(s)
2576
for key, (tree_path, branch_location) in info_dict.iteritems():
2577
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2578
branch_location=branch_location)
2579
writer.write_stanza(stanza)
2580
self._transport.put_bytes('references', s.getvalue())
2581
self._reference_info = info_dict
2584
def _get_all_reference_info(self):
2585
"""Return all the reference info stored in a branch.
2587
:return: A dict of {file_id: (tree_path, branch_location)}
2589
if self._reference_info is not None:
2590
return self._reference_info
2591
rio_file = self._transport.get('references')
2593
stanzas = rio.read_stanzas(rio_file)
2594
info_dict = dict((s['file_id'], (s['tree_path'],
2595
s['branch_location'])) for s in stanzas)
2598
self._reference_info = info_dict
2601
def set_reference_info(self, file_id, tree_path, branch_location):
2602
"""Set the branch location to use for a tree reference.
2604
:param file_id: The file-id of the tree reference.
2605
:param tree_path: The path of the tree reference in the tree.
2606
:param branch_location: The location of the branch to retrieve tree
2609
info_dict = self._get_all_reference_info()
2610
info_dict[file_id] = (tree_path, branch_location)
2611
if None in (tree_path, branch_location):
2612
if tree_path is not None:
2613
raise ValueError('tree_path must be None when branch_location'
2615
if branch_location is not None:
2616
raise ValueError('branch_location must be None when tree_path'
2618
del info_dict[file_id]
2619
self._set_all_reference_info(info_dict)
2621
def get_reference_info(self, file_id):
2622
"""Get the tree_path and branch_location for a tree reference.
2624
:return: a tuple of (tree_path, branch_location)
2626
return self._get_all_reference_info().get(file_id, (None, None))
2628
def reference_parent(self, file_id, path, possible_transports=None):
2629
"""Return the parent branch for a tree-reference file_id.
2631
:param file_id: The file_id of the tree reference
2632
:param path: The path of the file_id in the tree
2633
:return: A branch associated with the file_id
2635
branch_location = self.get_reference_info(file_id)[1]
2636
if branch_location is None:
2637
return Branch.reference_parent(self, file_id, path,
2638
possible_transports)
2639
branch_location = urlutils.join(self.base, branch_location)
2640
return Branch.open(branch_location,
2641
possible_transports=possible_transports)
2643
2031
def set_push_location(self, location):
2644
2032
"""See Branch.set_push_location."""
2645
2033
self._set_config_location('push_location', location)
2678
2066
"""See Branch.get_old_bound_location"""
2679
2067
return self._get_bound_location(False)
2681
def get_stacked_on_url(self):
2682
# you can always ask for the URL; but you might not be able to use it
2683
# if the repo can't support stacking.
2684
## self._check_stackable_repo()
2685
stacked_url = self._get_config_location('stacked_on_location')
2686
if stacked_url is None:
2687
raise errors.NotStacked(self)
2069
def set_append_revisions_only(self, enabled):
2074
self.get_config().set_user_option('append_revisions_only', value,
2690
2077
def _get_append_revisions_only(self):
2691
2078
value = self.get_config().get_user_option('append_revisions_only')
2692
2079
return value == 'True'
2695
def generate_revision_history(self, revision_id, last_rev=None,
2697
"""See BzrBranch5.generate_revision_history"""
2698
history = self._lefthand_history(revision_id, last_rev, other_branch)
2699
revno = len(history)
2700
self.set_last_revision_info(revno, revision_id)
2703
def get_rev_id(self, revno, history=None):
2704
"""Find the revision id of the specified revno."""
2706
return _mod_revision.NULL_REVISION
2708
last_revno, last_revision_id = self.last_revision_info()
2709
if revno <= 0 or revno > last_revno:
2710
raise errors.NoSuchRevision(self, revno)
2712
if history is not None:
2713
return history[revno - 1]
2715
index = last_revno - revno
2716
if len(self._partial_revision_history_cache) <= index:
2717
self._extend_partial_history(stop_index=index)
2718
if len(self._partial_revision_history_cache) > index:
2719
return self._partial_revision_history_cache[index]
2081
def _synchronize_history(self, destination, revision_id):
2082
"""Synchronize last revision and revision history between branches.
2084
This version is most efficient when the destination is also a
2085
BzrBranch6, but works for BzrBranch5, as long as the destination's
2086
repository contains all the lefthand ancestors of the intended
2087
last_revision. If not, set_last_revision_info will fail.
2089
:param destination: The branch to copy the history into
2090
:param revision_id: The revision-id to truncate history at. May
2091
be None to copy complete history.
2093
if revision_id is None:
2094
revno, revision_id = self.last_revision_info()
2721
raise errors.NoSuchRevision(self, revno)
2724
def revision_id_to_revno(self, revision_id):
2725
"""Given a revision id, return its revno"""
2726
if _mod_revision.is_null(revision_id):
2729
index = self._partial_revision_history_cache.index(revision_id)
2731
self._extend_partial_history(stop_revision=revision_id)
2732
index = len(self._partial_revision_history_cache) - 1
2733
if self._partial_revision_history_cache[index] != revision_id:
2734
raise errors.NoSuchRevision(self, revision_id)
2735
return self.revno() - index
2738
class BzrBranch7(BzrBranch8):
2739
"""A branch with support for a fallback repository."""
2741
def set_reference_info(self, file_id, tree_path, branch_location):
2742
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2744
def get_reference_info(self, file_id):
2745
Branch.get_reference_info(self, file_id)
2747
def reference_parent(self, file_id, path, possible_transports=None):
2748
return Branch.reference_parent(self, file_id, path,
2749
possible_transports)
2752
class BzrBranch6(BzrBranch7):
2753
"""See BzrBranchFormat6 for the capabilities of this branch.
2755
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2759
def get_stacked_on_url(self):
2760
raise errors.UnstackableBranchFormat(self._format, self.base)
2096
# To figure out the revno for a random revision, we need to build
2097
# the revision history, and count its length.
2098
# We don't care about the order, just how long it is.
2099
# Alternatively, we could start at the current location, and count
2100
# backwards. But there is no guarantee that we will find it since
2101
# it may be a merged revision.
2102
revno = len(list(self.repository.iter_reverse_revision_history(
2104
destination.set_last_revision_info(revno, revision_id)
2106
def _make_tags(self):
2107
return BasicTags(self)
2763
2110
######################################################################
2874
2208
new_branch.tags._set_tag_dict({})
2876
2210
# Copying done; now update target format
2877
new_branch._transport.put_bytes('format',
2878
format.get_format_string(),
2879
mode=new_branch.bzrdir._get_file_mode())
2211
new_branch.control_files.put_utf8('format',
2212
format.get_format_string())
2881
2214
# Clean up old files
2882
new_branch._transport.delete('revision-history')
2215
new_branch.control_files._transport.delete('revision-history')
2884
2217
branch.set_parent(None)
2885
except errors.NoSuchFile:
2887
2220
branch.set_bound_location(None)
2890
class Converter6to7(object):
2891
"""Perform an in-place upgrade of format 6 to format 7"""
2893
def convert(self, branch):
2894
format = BzrBranchFormat7()
2895
branch._set_config_location('stacked_on_location', '')
2896
# update target format
2897
branch._transport.put_bytes('format', format.get_format_string())
2900
class Converter7to8(object):
2901
"""Perform an in-place upgrade of format 6 to format 7"""
2903
def convert(self, branch):
2904
format = BzrBranchFormat8()
2905
branch._transport.put_bytes('references', '')
2906
# update target format
2907
branch._transport.put_bytes('format', format.get_format_string())
2910
def _run_with_write_locked_target(target, callable, *args, **kwargs):
2911
"""Run ``callable(*args, **kwargs)``, write-locking target for the
2914
_run_with_write_locked_target will attempt to release the lock it acquires.
2916
If an exception is raised by callable, then that exception *will* be
2917
propagated, even if the unlock attempt raises its own error. Thus
2918
_run_with_write_locked_target should be preferred to simply doing::
2922
return callable(*args, **kwargs)
2927
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
2928
# should share code?
2931
result = callable(*args, **kwargs)
2933
exc_info = sys.exc_info()
2937
raise exc_info[0], exc_info[1], exc_info[2]
2943
class InterBranch(InterObject):
2944
"""This class represents operations taking place between two branches.
2946
Its instances have methods like pull() and push() and contain
2947
references to the source and target repositories these operations
2948
can be carried out on.
2952
"""The available optimised InterBranch types."""
2955
def _get_branch_formats_to_test():
2956
"""Return a tuple with the Branch formats to use when testing."""
2957
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
2959
def pull(self, overwrite=False, stop_revision=None,
2960
possible_transports=None, local=False):
2961
"""Mirror source into target branch.
2963
The target branch is considered to be 'local', having low latency.
2965
:returns: PullResult instance
2967
raise NotImplementedError(self.pull)
2969
def update_revisions(self, stop_revision=None, overwrite=False,
2971
"""Pull in new perfect-fit revisions.
2973
:param stop_revision: Updated until the given revision
2974
:param overwrite: Always set the branch pointer, rather than checking
2975
to see if it is a proper descendant.
2976
:param graph: A Graph object that can be used to query history
2977
information. This can be None.
2980
raise NotImplementedError(self.update_revisions)
2982
def push(self, overwrite=False, stop_revision=None,
2983
_override_hook_source_branch=None):
2984
"""Mirror the source branch into the target branch.
2986
The source branch is considered to be 'local', having low latency.
2988
raise NotImplementedError(self.push)
2991
class GenericInterBranch(InterBranch):
2992
"""InterBranch implementation that uses public Branch functions.
2996
def _get_branch_formats_to_test():
2997
return BranchFormat._default_format, BranchFormat._default_format
2999
def update_revisions(self, stop_revision=None, overwrite=False,
3001
"""See InterBranch.update_revisions()."""
3002
self.source.lock_read()
3004
other_revno, other_last_revision = self.source.last_revision_info()
3005
stop_revno = None # unknown
3006
if stop_revision is None:
3007
stop_revision = other_last_revision
3008
if _mod_revision.is_null(stop_revision):
3009
# if there are no commits, we're done.
3011
stop_revno = other_revno
3013
# what's the current last revision, before we fetch [and change it
3015
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3016
# we fetch here so that we don't process data twice in the common
3017
# case of having something to pull, and so that the check for
3018
# already merged can operate on the just fetched graph, which will
3019
# be cached in memory.
3020
self.target.fetch(self.source, stop_revision)
3021
# Check to see if one is an ancestor of the other
3024
graph = self.target.repository.get_graph()
3025
if self.target._check_if_descendant_or_diverged(
3026
stop_revision, last_rev, graph, self.source):
3027
# stop_revision is a descendant of last_rev, but we aren't
3028
# overwriting, so we're done.
3030
if stop_revno is None:
3032
graph = self.target.repository.get_graph()
3033
this_revno, this_last_revision = \
3034
self.target.last_revision_info()
3035
stop_revno = graph.find_distance_to_null(stop_revision,
3036
[(other_last_revision, other_revno),
3037
(this_last_revision, this_revno)])
3038
self.target.set_last_revision_info(stop_revno, stop_revision)
3040
self.source.unlock()
3042
def pull(self, overwrite=False, stop_revision=None,
3043
possible_transports=None, _hook_master=None, run_hooks=True,
3044
_override_hook_target=None, local=False):
3047
:param _hook_master: Private parameter - set the branch to
3048
be supplied as the master to pull hooks.
3049
:param run_hooks: Private parameter - if false, this branch
3050
is being called because it's the master of the primary branch,
3051
so it should not run its hooks.
3052
:param _override_hook_target: Private parameter - set the branch to be
3053
supplied as the target_branch to pull hooks.
3054
:param local: Only update the local branch, and not the bound branch.
3056
# This type of branch can't be bound.
3058
raise errors.LocalRequiresBoundBranch()
3059
result = PullResult()
3060
result.source_branch = self.source
3061
if _override_hook_target is None:
3062
result.target_branch = self.target
3064
result.target_branch = _override_hook_target
3065
self.source.lock_read()
3067
# We assume that during 'pull' the target repository is closer than
3069
self.source.update_references(self.target)
3070
graph = self.target.repository.get_graph(self.source.repository)
3071
# TODO: Branch formats should have a flag that indicates
3072
# that revno's are expensive, and pull() should honor that flag.
3074
result.old_revno, result.old_revid = \
3075
self.target.last_revision_info()
3076
self.target.update_revisions(self.source, stop_revision,
3077
overwrite=overwrite, graph=graph)
3078
# TODO: The old revid should be specified when merging tags,
3079
# so a tags implementation that versions tags can only
3080
# pull in the most recent changes. -- JRV20090506
3081
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3083
result.new_revno, result.new_revid = self.target.last_revision_info()
3085
result.master_branch = _hook_master
3086
result.local_branch = result.target_branch
3088
result.master_branch = result.target_branch
3089
result.local_branch = None
3091
for hook in Branch.hooks['post_pull']:
3094
self.source.unlock()
3097
def push(self, overwrite=False, stop_revision=None,
3098
_override_hook_source_branch=None):
3099
"""See InterBranch.push.
3101
This is the basic concrete implementation of push()
3103
:param _override_hook_source_branch: If specified, run
3104
the hooks passing this Branch as the source, rather than self.
3105
This is for use of RemoteBranch, where push is delegated to the
3106
underlying vfs-based Branch.
3108
# TODO: Public option to disable running hooks - should be trivial but
3110
self.source.lock_read()
3112
return _run_with_write_locked_target(
3113
self.target, self._push_with_bound_branches, overwrite,
3115
_override_hook_source_branch=_override_hook_source_branch)
3117
self.source.unlock()
3119
def _push_with_bound_branches(self, overwrite, stop_revision,
3120
_override_hook_source_branch=None):
3121
"""Push from source into target, and into target's master if any.
3124
if _override_hook_source_branch:
3125
result.source_branch = _override_hook_source_branch
3126
for hook in Branch.hooks['post_push']:
3129
bound_location = self.target.get_bound_location()
3130
if bound_location and self.target.base != bound_location:
3131
# there is a master branch.
3133
# XXX: Why the second check? Is it even supported for a branch to
3134
# be bound to itself? -- mbp 20070507
3135
master_branch = self.target.get_master_branch()
3136
master_branch.lock_write()
3138
# push into the master from the source branch.
3139
self.source._basic_push(master_branch, overwrite, stop_revision)
3140
# and push into the target branch from the source. Note that we
3141
# push from the source branch again, because its considered the
3142
# highest bandwidth repository.
3143
result = self.source._basic_push(self.target, overwrite,
3145
result.master_branch = master_branch
3146
result.local_branch = self.target
3150
master_branch.unlock()
3153
result = self.source._basic_push(self.target, overwrite,
3155
# TODO: Why set master_branch and local_branch if there's no
3156
# binding? Maybe cleaner to just leave them unset? -- mbp
3158
result.master_branch = self.target
3159
result.local_branch = None
3164
def is_compatible(self, source, target):
3165
# GenericBranch uses the public API, so always compatible
3169
class InterToBranch5(GenericInterBranch):
3172
def _get_branch_formats_to_test():
3173
return BranchFormat._default_format, BzrBranchFormat5()
3175
def pull(self, overwrite=False, stop_revision=None,
3176
possible_transports=None, run_hooks=True,
3177
_override_hook_target=None, local=False):
3178
"""Pull from source into self, updating my master if any.
3180
:param run_hooks: Private parameter - if false, this branch
3181
is being called because it's the master of the primary branch,
3182
so it should not run its hooks.
3184
bound_location = self.target.get_bound_location()
3185
if local and not bound_location:
3186
raise errors.LocalRequiresBoundBranch()
3187
master_branch = None
3188
if not local and bound_location and self.source.base != bound_location:
3189
# not pulling from master, so we need to update master.
3190
master_branch = self.target.get_master_branch(possible_transports)
3191
master_branch.lock_write()
3194
# pull from source into master.
3195
master_branch.pull(self.source, overwrite, stop_revision,
3197
return super(InterToBranch5, self).pull(overwrite,
3198
stop_revision, _hook_master=master_branch,
3199
run_hooks=run_hooks,
3200
_override_hook_target=_override_hook_target)
3203
master_branch.unlock()
3206
InterBranch.register_optimiser(GenericInterBranch)
3207
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
