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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from __future__ import absolute_import
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from bzrlib import (
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revision as _mod_revision,
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.repository import (
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MetaDirRepositoryFormat,
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import bzrlib.revision as _mod_revision
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from bzrlib.store.versioned import VersionedFileStore
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from bzrlib.trace import mutter, note, warning
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RepositoryFormatMetaDir,
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from bzrlib.vf_repository import (
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InterSameDataRepository,
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MetaDirVersionedFileRepository,
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MetaDirVersionedFileRepositoryFormat,
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VersionedFileCommitBuilder,
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VersionedFileRootCommitBuilder,
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from bzrlib import symbol_versioning
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class _KnitParentsProvider(object):
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def __repr__(self):
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return 'KnitParentsProvider(%r)' % self._knit
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def get_parents(self, revision_ids):
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for revision_id in revision_ids:
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def get_parent_map(self, keys):
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"""See graph.StackedParentsProvider.get_parent_map"""
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for revision_id in keys:
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if revision_id is None:
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raise ValueError('get_parent_map(None) is not valid')
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if revision_id == _mod_revision.NULL_REVISION:
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parent_map[revision_id] = ()
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parents = self._knit.get_parents_with_ghosts(revision_id)
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self._knit.get_parents_with_ghosts(revision_id))
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except errors.RevisionNotPresent:
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if len(parents) == 0:
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parents = [_mod_revision.NULL_REVISION]
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parents_list.append(parents)
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class KnitRepository(MetaDirRepository):
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parents = (_mod_revision.NULL_REVISION,)
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parent_map[revision_id] = parents
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class _KnitsParentsProvider(object):
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def __init__(self, knit, prefix=()):
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"""Create a parent provider for string keys mapped to tuple keys."""
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return 'KnitsParentsProvider(%r)' % self._knit
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def get_parent_map(self, keys):
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"""See graph.StackedParentsProvider.get_parent_map"""
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parent_map = self._knit.get_parent_map(
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[self._prefix + (key,) for key in keys])
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for key, parents in parent_map.items():
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if len(parents) == 0:
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parents = (_mod_revision.NULL_REVISION,)
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parents = tuple(parent[-1] for parent in parents)
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result[revid] = parents
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for revision_id in keys:
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if revision_id == _mod_revision.NULL_REVISION:
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result[revision_id] = ()
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class KnitRepository(MetaDirVersionedFileRepository):
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"""Knit format repository."""
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_serializer = xml5.serializer_v5
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def _warn_if_deprecated(self):
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# This class isn't deprecated
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def _inventory_add_lines(self, inv_vf, revid, parents, lines):
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inv_vf.add_lines_with_ghosts(revid, parents, lines)
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# These attributes are inherited from the Repository base class. Setting
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# them to None ensures that if the constructor is changed to not initialize
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# them, or a subclass fails to call the constructor, that an error will
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# occur rather than the system working but generating incorrect data.
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_commit_builder_class = None
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def __init__(self, _format, a_bzrdir, control_files, _commit_builder_class,
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super(KnitRepository, self).__init__(_format, a_bzrdir, control_files)
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self._commit_builder_class = _commit_builder_class
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self._serializer = _serializer
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self._reconcile_fixes_text_parents = True
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def _all_revision_ids(self):
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"""See Repository.all_revision_ids()."""
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# Knits get the revision graph from the index of the revision knit, so
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# it's always possible even if they're on an unlistable transport.
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return self._revision_store.all_revision_ids(self.get_transaction())
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def fileid_involved_between_revs(self, from_revid, to_revid):
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"""Find file_id(s) which are involved in the changes between revisions.
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This determines the set of revisions which are involved, and then
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finds all file ids affected by those revisions.
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from_revid = osutils.safe_revision_id(from_revid)
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to_revid = osutils.safe_revision_id(to_revid)
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vf = self._get_revision_vf()
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from_set = set(vf.get_ancestry(from_revid))
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to_set = set(vf.get_ancestry(to_revid))
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changed = to_set.difference(from_set)
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return self._fileid_involved_by_set(changed)
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def fileid_involved(self, last_revid=None):
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"""Find all file_ids modified in the ancestry of last_revid.
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:param last_revid: If None, last_revision() will be used.
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changed = set(self.all_revision_ids())
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changed = set(self.get_ancestry(last_revid))
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return self._fileid_involved_by_set(changed)
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def get_ancestry(self, revision_id, topo_sorted=True):
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"""Return a list of revision-ids integrated by a revision.
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This is topologically sorted, unless 'topo_sorted' is specified as
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if _mod_revision.is_null(revision_id):
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revision_id = osutils.safe_revision_id(revision_id)
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vf = self._get_revision_vf()
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return [None] + vf.get_ancestry(revision_id, topo_sorted)
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except errors.RevisionNotPresent:
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raise errors.NoSuchRevision(self, revision_id)
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return [key[0] for key in self.revisions.keys()]
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def _activate_new_inventory(self):
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"""Put a replacement inventory.new into use as inventories."""
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# Copy the content across
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t.copy('inventory.new.kndx', 'inventory.kndx')
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t.copy('inventory.new.knit', 'inventory.knit')
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except errors.NoSuchFile:
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# empty inventories knit
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t.delete('inventory.knit')
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# delete the temp inventory
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t.delete('inventory.new.kndx')
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t.delete('inventory.new.knit')
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except errors.NoSuchFile:
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# empty inventories knit
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# Force index reload (sanity check)
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self.inventories._index._reset_cache()
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self.inventories.keys()
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def _backup_inventory(self):
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t.copy('inventory.kndx', 'inventory.backup.kndx')
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t.copy('inventory.knit', 'inventory.backup.knit')
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def _move_file_id(self, from_id, to_id):
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t = self._transport.clone('knits')
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from_rel_url = self.texts._index._mapper.map((from_id, None))
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to_rel_url = self.texts._index._mapper.map((to_id, None))
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# We expect both files to always exist in this case.
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for suffix in ('.knit', '.kndx'):
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t.rename(from_rel_url + suffix, to_rel_url + suffix)
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def _remove_file_id(self, file_id):
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t = self._transport.clone('knits')
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rel_url = self.texts._index._mapper.map((file_id, None))
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for suffix in ('.kndx', '.knit'):
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t.delete(rel_url + suffix)
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except errors.NoSuchFile:
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def _temp_inventories(self):
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result = self._format._get_inventories(self._transport, self,
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# Reconciling when the output has no revisions would result in no
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# writes - but we want to ensure there is an inventory for
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# compatibility with older clients that don't lazy-load.
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result.get_parent_map([('A',)])
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def get_revision(self, revision_id):
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revision_id = osutils.safe_revision_id(revision_id)
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return self.get_revision_reconcile(revision_id)
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def get_revision_graph(self, revision_id=None):
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"""Return a dictionary containing the revision graph.
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:param revision_id: The revision_id to get a graph from. If None, then
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the entire revision graph is returned. This is a deprecated mode of
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operation and will be removed in the future.
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:return: a dictionary of revision_id->revision_parents_list.
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# special case NULL_REVISION
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if revision_id == _mod_revision.NULL_REVISION:
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revision_id = osutils.safe_revision_id(revision_id)
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a_weave = self._get_revision_vf()
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if revision_id is None:
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return a_weave.get_graph()
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elif revision_id not in a_weave:
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raise errors.NoSuchRevision(self, revision_id)
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# add what can be reached from revision_id
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return a_weave.get_graph([revision_id])
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def get_revision_graph_with_ghosts(self, revision_ids=None):
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"""Return a graph of the revisions with ghosts marked as applicable.
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:param revision_ids: an iterable of revisions to graph or None for all.
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:return: a Graph object with the graph reachable from revision_ids.
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result = deprecated_graph.Graph()
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vf = self._get_revision_vf()
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versions = set(vf.versions())
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pending = set(self.all_revision_ids())
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pending = set(osutils.safe_revision_id(r) for r in revision_ids)
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# special case NULL_REVISION
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if _mod_revision.NULL_REVISION in pending:
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pending.remove(_mod_revision.NULL_REVISION)
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required = set(pending)
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revision_id = pending.pop()
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if not revision_id in versions:
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if revision_id in required:
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raise errors.NoSuchRevision(self, revision_id)
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result.add_ghost(revision_id)
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# mark it as done so we don't try for it again.
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done.add(revision_id)
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parent_ids = vf.get_parents_with_ghosts(revision_id)
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for parent_id in parent_ids:
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# is this queued or done ?
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if (parent_id not in pending and
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parent_id not in done):
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pending.add(parent_id)
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result.add_node(revision_id, parent_ids)
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done.add(revision_id)
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def _get_revision_vf(self):
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""":return: a versioned file containing the revisions."""
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vf = self._revision_store.get_revision_file(self.get_transaction())
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def _get_history_vf(self):
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"""Get a versionedfile whose history graph reflects all revisions.
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For knit repositories, this is the revision knit.
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return self._get_revision_vf()
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def _refresh_data(self):
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if not self.is_locked():
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if self.is_in_write_group():
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raise IsInWriteGroupError(self)
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# Create a new transaction to force all knits to see the scope change.
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# This is safe because we're outside a write group.
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self.control_files._finish_transaction()
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if self.is_write_locked():
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self.control_files._set_write_transaction()
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self.control_files._set_read_transaction()
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@needs_write_lock
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def reconcile(self, other=None, thorough=False):
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reconciler = KnitReconciler(self, thorough=thorough)
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reconciler.reconcile()
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return reconciler
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def revision_parents(self, revision_id):
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revision_id = osutils.safe_revision_id(revision_id)
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return self._get_revision_vf().get_parents(revision_id)
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def _make_parents_provider(self):
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return _KnitParentsProvider(self._get_revision_vf())
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class KnitRepository3(KnitRepository):
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def __init__(self, _format, a_bzrdir, control_files, _revision_store,
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control_store, text_store):
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KnitRepository.__init__(self, _format, a_bzrdir, control_files,
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_revision_store, control_store, text_store)
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self._serializer = xml7.serializer_v7
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def deserialise_inventory(self, revision_id, xml):
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"""Transform the xml into an inventory object.
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:param revision_id: The expected revision id of the inventory.
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:param xml: A serialised inventory.
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result = self._serializer.read_inventory_from_string(xml)
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assert result.root.revision is not None
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def serialise_inventory(self, inv):
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"""Transform the inventory object into XML text.
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:param revision_id: The expected revision id of the inventory.
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:param xml: A serialised inventory.
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assert inv.revision_id is not None
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assert inv.root.revision is not None
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return KnitRepository.serialise_inventory(self, inv)
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def get_commit_builder(self, branch, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Obtain a CommitBuilder for this repository.
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:param branch: Branch to commit to.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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revision_id = osutils.safe_revision_id(revision_id)
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return RootCommitBuilder(self, parents, config, timestamp, timezone,
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committer, revprops, revision_id)
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class RepositoryFormatKnit(MetaDirRepositoryFormat):
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"""Bzr repository knit format (generalized).
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return _KnitsParentsProvider(self.revisions)
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class RepositoryFormatKnit(MetaDirVersionedFileRepositoryFormat):
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"""Bzr repository knit format (generalized).
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This repository format has:
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- knits for file texts and inventory
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def _get_control_store(self, repo_transport, control_files):
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"""Return the control store for this repository."""
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return VersionedFileStore(
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file_mode=control_files._file_mode,
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versionedfile_class=knit.KnitVersionedFile,
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versionedfile_kwargs={'factory':knit.KnitPlainFactory()},
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def _get_revision_store(self, repo_transport, control_files):
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"""See RepositoryFormat._get_revision_store()."""
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from bzrlib.store.revision.knit import KnitRevisionStore
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versioned_file_store = VersionedFileStore(
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file_mode=control_files._file_mode,
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versionedfile_class=knit.KnitVersionedFile,
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versionedfile_kwargs={'delta':False,
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'factory':knit.KnitPlainFactory(),
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return KnitRevisionStore(versioned_file_store)
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def _get_text_store(self, transport, control_files):
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"""See RepositoryFormat._get_text_store()."""
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return self._get_versioned_file_store('knits',
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versionedfile_class=knit.KnitVersionedFile,
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versionedfile_kwargs={
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'create_parent_dir':True,
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'dir_mode':control_files._dir_mode,
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# Set this attribute in derived classes to control the repository class
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# created by open and initialize.
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repository_class = None
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# Set this attribute in derived classes to control the
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# _commit_builder_class that the repository objects will have passed to
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_commit_builder_class = None
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# Set this attribute in derived clases to control the _serializer that the
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# repository objects will have passed to their constructor.
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def _serializer(self):
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return xml5.serializer_v5
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# Knit based repositories handle ghosts reasonably well.
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supports_ghosts = True
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# External lookups are not supported in this format.
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supports_external_lookups = False
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supports_chks = False
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_fetch_order = 'topological'
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_fetch_uses_deltas = True
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supports_funky_characters = True
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# The revision.kndx could potentially claim a revision has a different
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# parent to the revision text.
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revision_graph_can_have_wrong_parents = True
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def _get_inventories(self, repo_transport, repo, name='inventory'):
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mapper = versionedfile.ConstantMapper(name)
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index = _mod_knit._KndxIndex(repo_transport, mapper,
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repo.get_transaction, repo.is_write_locked, repo.is_locked)
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access = _mod_knit._KnitKeyAccess(repo_transport, mapper)
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return _mod_knit.KnitVersionedFiles(index, access, annotated=False)
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def _get_revisions(self, repo_transport, repo):
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mapper = versionedfile.ConstantMapper('revisions')
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index = _mod_knit._KndxIndex(repo_transport, mapper,
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repo.get_transaction, repo.is_write_locked, repo.is_locked)
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access = _mod_knit._KnitKeyAccess(repo_transport, mapper)
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return _mod_knit.KnitVersionedFiles(index, access, max_delta_chain=0,
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def _get_signatures(self, repo_transport, repo):
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mapper = versionedfile.ConstantMapper('signatures')
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index = _mod_knit._KndxIndex(repo_transport, mapper,
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repo.get_transaction, repo.is_write_locked, repo.is_locked)
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access = _mod_knit._KnitKeyAccess(repo_transport, mapper)
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return _mod_knit.KnitVersionedFiles(index, access, max_delta_chain=0,
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def _get_texts(self, repo_transport, repo):
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mapper = versionedfile.HashEscapedPrefixMapper()
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base_transport = repo_transport.clone('knits')
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index = _mod_knit._KndxIndex(base_transport, mapper,
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repo.get_transaction, repo.is_write_locked, repo.is_locked)
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access = _mod_knit._KnitKeyAccess(base_transport, mapper)
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return _mod_knit.KnitVersionedFiles(index, access, max_delta_chain=200,
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def initialize(self, a_bzrdir, shared=False):
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"""Create a knit format 1 repository.
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:param shared: If true the repository will be initialized as a shared
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mutter('creating repository in %s.', a_bzrdir.transport.base)
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dirs = ['revision-store', 'knits']
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trace.mutter('creating repository in %s.', a_bzrdir.transport.base)
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utf8_files = [('format', self.get_format_string())]
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self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
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repo_transport = a_bzrdir.get_repository_transport(None)
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control_files = lockable_files.LockableFiles(repo_transport,
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'lock', lockdir.LockDir)
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control_store = self._get_control_store(repo_transport, control_files)
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transaction = transactions.WriteTransaction()
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# trigger a write of the inventory store.
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control_store.get_weave_or_empty('inventory', transaction)
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_revision_store = self._get_revision_store(repo_transport, control_files)
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result = self.open(a_bzrdir=a_bzrdir, _found=True)
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# the revision id here is irrelevant: it will not be stored, and cannot
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_revision_store.has_revision_id('A', transaction)
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_revision_store.get_signature_file(transaction)
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return self.open(a_bzrdir=a_bzrdir, _found=True)
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# already exist, we do this to create files on disk for older clients.
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result.inventories.get_parent_map([('A',)])
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result.revisions.get_parent_map([('A',)])
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result.signatures.get_parent_map([('A',)])
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self._run_post_repo_init_hooks(result, a_bzrdir, shared)
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def open(self, a_bzrdir, _found=False, _override_transport=None):
355
319
"""See RepositoryFormat.open().
357
321
:param _override_transport: INTERNAL USE ONLY. Allows opening the
358
322
repository at a slightly different url
359
323
than normal. I.e. during 'upgrade'.
362
format = RepositoryFormat.find_format(a_bzrdir)
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assert format.__class__ == self.__class__
326
format = RepositoryFormatMetaDir.find_format(a_bzrdir)
364
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if _override_transport is not None:
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328
repo_transport = _override_transport
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330
repo_transport = a_bzrdir.get_repository_transport(None)
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331
control_files = lockable_files.LockableFiles(repo_transport,
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332
'lock', lockdir.LockDir)
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text_store = self._get_text_store(repo_transport, control_files)
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control_store = self._get_control_store(repo_transport, control_files)
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_revision_store = self._get_revision_store(repo_transport, control_files)
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return KnitRepository(_format=self,
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repo = self.repository_class(_format=self,
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a_bzrdir=a_bzrdir,
375
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control_files=control_files,
376
_revision_store=_revision_store,
377
control_store=control_store,
378
text_store=text_store)
336
_commit_builder_class=self._commit_builder_class,
337
_serializer=self._serializer)
338
repo.revisions = self._get_revisions(repo_transport, repo)
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repo.signatures = self._get_signatures(repo_transport, repo)
340
repo.inventories = self._get_inventories(repo_transport, repo)
341
repo.texts = self._get_texts(repo_transport, repo)
342
repo.chk_bytes = None
343
repo._transport = repo_transport
381
347
class RepositoryFormatKnit1(RepositoryFormatKnit):
425
395
- support for recording tree-references
428
repository_class = KnitRepository3
398
repository_class = KnitRepository
399
_commit_builder_class = VersionedFileRootCommitBuilder
429
400
rich_root_data = True
430
402
supports_tree_reference = True
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def _serializer(self):
405
return xml7.serializer_v7
432
407
def _get_matching_bzrdir(self):
433
return bzrdir.format_registry.make_bzrdir('dirstate-with-subtree')
408
return controldir.format_registry.make_bzrdir('dirstate-with-subtree')
435
410
def _ignore_setting_bzrdir(self, format):
438
413
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
440
def check_conversion_target(self, target_format):
441
if not target_format.rich_root_data:
442
raise errors.BadConversionTarget(
443
'Does not support rich root data.', target_format)
444
if not getattr(target_format, 'supports_tree_reference', False):
445
raise errors.BadConversionTarget(
446
'Does not support nested trees', target_format)
448
def get_format_string(self):
416
def get_format_string(cls):
449
417
"""See RepositoryFormat.get_format_string()."""
450
418
return "Bazaar Knit Repository Format 3 (bzr 0.15)\n"
453
421
"""See RepositoryFormat.get_format_description()."""
454
422
return "Knit repository format 3"
456
def open(self, a_bzrdir, _found=False, _override_transport=None):
457
"""See RepositoryFormat.open().
459
:param _override_transport: INTERNAL USE ONLY. Allows opening the
460
repository at a slightly different url
461
than normal. I.e. during 'upgrade'.
425
class RepositoryFormatKnit4(RepositoryFormatKnit):
426
"""Bzr repository knit format 4.
428
This repository format has everything in format 3, except for
430
- knits for file texts and inventory
431
- hash subdirectory based stores.
432
- knits for revisions and signatures
433
- TextStores for revisions and signatures.
434
- a format marker of its own
435
- an optional 'shared-storage' flag
436
- an optional 'no-working-trees' flag
438
- support for recording full info about the tree root
441
repository_class = KnitRepository
442
_commit_builder_class = VersionedFileRootCommitBuilder
443
rich_root_data = True
444
supports_tree_reference = False
446
def _serializer(self):
447
return xml6.serializer_v6
449
def _get_matching_bzrdir(self):
450
return controldir.format_registry.make_bzrdir('rich-root')
452
def _ignore_setting_bzrdir(self, format):
455
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
458
def get_format_string(cls):
459
"""See RepositoryFormat.get_format_string()."""
460
return 'Bazaar Knit Repository Format 4 (bzr 1.0)\n'
462
def get_format_description(self):
463
"""See RepositoryFormat.get_format_description()."""
464
return "Knit repository format 4"
467
class InterKnitRepo(InterSameDataRepository):
468
"""Optimised code paths between Knit based repositories."""
471
def _get_repo_format_to_test(self):
472
return RepositoryFormatKnit1()
475
def is_compatible(source, target):
476
"""Be compatible with known Knit formats.
478
We don't test for the stores being of specific types because that
479
could lead to confusing results, and there is no need to be
464
format = RepositoryFormat.find_format(a_bzrdir)
465
assert format.__class__ == self.__class__
466
if _override_transport is not None:
467
repo_transport = _override_transport
483
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
484
isinstance(target._format, RepositoryFormatKnit))
485
except AttributeError:
487
return are_knits and InterRepository._same_model(source, target)
490
def search_missing_revision_ids(self,
491
find_ghosts=True, revision_ids=None, if_present_ids=None,
493
"""See InterRepository.search_missing_revision_ids()."""
494
source_ids_set = self._present_source_revisions_for(
495
revision_ids, if_present_ids)
496
# source_ids is the worst possible case we may need to pull.
497
# now we want to filter source_ids against what we actually
498
# have in target, but don't try to check for existence where we know
499
# we do not have a revision as that would be pointless.
500
target_ids = set(self.target.all_revision_ids())
501
possibly_present_revisions = target_ids.intersection(source_ids_set)
502
actually_present_revisions = set(
503
self.target._eliminate_revisions_not_present(possibly_present_revisions))
504
required_revisions = source_ids_set.difference(actually_present_revisions)
505
if revision_ids is not None:
506
# we used get_ancestry to determine source_ids then we are assured all
507
# revisions referenced are present as they are installed in topological order.
508
# and the tip revision was validated by get_ancestry.
509
result_set = required_revisions
469
repo_transport = a_bzrdir.get_repository_transport(None)
470
control_files = lockable_files.LockableFiles(repo_transport, 'lock',
472
text_store = self._get_text_store(repo_transport, control_files)
473
control_store = self._get_control_store(repo_transport, control_files)
474
_revision_store = self._get_revision_store(repo_transport, control_files)
475
return self.repository_class(_format=self,
477
control_files=control_files,
478
_revision_store=_revision_store,
479
control_store=control_store,
480
text_store=text_store)
511
# if we just grabbed the possibly available ids, then
512
# we only have an estimate of whats available and need to validate
513
# that against the revision records.
515
self.source._eliminate_revisions_not_present(required_revisions))
516
if limit is not None:
517
topo_ordered = self.source.get_graph().iter_topo_order(result_set)
518
result_set = set(itertools.islice(topo_ordered, limit))
519
return self.source.revision_ids_to_search_result(result_set)
522
InterRepository.register_optimiser(InterKnitRepo)
added
removed
bzrlib/repofmt/knitrepo.py
