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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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from __future__ import absolute_import
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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 izip
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from bzrlib import (
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from bzrlib.index import (
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CombinedGraphIndex,
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GraphIndexPrefixAdapter,
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from bzrlib.knit import KnitGraphIndex, _PackAccess, _KnitData
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from bzrlib.osutils import rand_chars
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from bzrlib.pack import ContainerWriter
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from bzrlib.store import revision
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from bzrlib import tsort
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from bzrlib import (
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from bzrlib.decorators import (
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from bzrlib.lock import LogicalLockResult
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.repofmt.knitrepo import KnitRepository
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from bzrlib.repository import (
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RepositoryFormatMetaDir,
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RepositoryWriteLockResult,
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from bzrlib.vf_repository import (
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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.trace import (
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class PackCommitBuilder(VersionedFileCommitBuilder):
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"""Subclass of VersionedFileCommitBuilder to add texts with pack semantics.
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MetaDirRepositoryFormat,
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import bzrlib.revision as _mod_revision
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from bzrlib.store.revision.knit import KnitRevisionStore
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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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class PackCommitBuilder(CommitBuilder):
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"""A subclass of CommitBuilder to add texts with pack semantics.
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Specifically this uses one knit object rather than one knit object per
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added text, reducing memory and object pressure.
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def __init__(self, repository, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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revision_id=None, lossy=False):
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VersionedFileCommitBuilder.__init__(self, repository, parents, config,
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CommitBuilder.__init__(self, repository, parents, config,
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timestamp=timestamp, timezone=timezone, committer=committer,
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revprops=revprops, revision_id=revision_id, lossy=lossy)
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revprops=revprops, revision_id=revision_id)
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self._file_graph = graph.Graph(
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repository._pack_collection.text_index.combined_index)
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def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
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return self.repository._pack_collection._add_text_to_weave(file_id,
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self._new_revision_id, new_lines, parents, nostore_sha,
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def _heads(self, file_id, revision_ids):
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keys = [(file_id, revision_id) for revision_id in revision_ids]
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return set([key[1] for key in self._file_graph.heads(keys)])
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class PackRootCommitBuilder(VersionedFileRootCommitBuilder):
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class PackRootCommitBuilder(RootCommitBuilder):
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"""A subclass of RootCommitBuilder to add texts with pack semantics.
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Specifically this uses one knit object rather than one knit object per
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added text, reducing memory and object pressure.
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def __init__(self, repository, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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revision_id=None, lossy=False):
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super(PackRootCommitBuilder, self).__init__(repository, parents,
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config, timestamp=timestamp, timezone=timezone,
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committer=committer, revprops=revprops, revision_id=revision_id,
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CommitBuilder.__init__(self, repository, parents, config,
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timestamp=timestamp, timezone=timezone, committer=committer,
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revprops=revprops, revision_id=revision_id)
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self._file_graph = graph.Graph(
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repository._pack_collection.text_index.combined_index)
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def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
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return self.repository._pack_collection._add_text_to_weave(file_id,
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self._new_revision_id, new_lines, parents, nostore_sha,
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def _heads(self, file_id, revision_ids):
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keys = [(file_id, revision_id) for revision_id in revision_ids]
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return set([key[1] for key in self._file_graph.heads(keys)])
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return not self.__eq__(other)
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def __repr__(self):
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return "<%s.%s object at 0x%x, %s, %s" % (
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self.__class__.__module__, self.__class__.__name__, id(self),
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self.pack_transport, self.name)
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class ResumedPack(ExistingPack):
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def __init__(self, name, revision_index, inventory_index, text_index,
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signature_index, upload_transport, pack_transport, index_transport,
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pack_collection, chk_index=None):
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"""Create a ResumedPack object."""
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ExistingPack.__init__(self, pack_transport, name, revision_index,
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inventory_index, text_index, signature_index,
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self.upload_transport = upload_transport
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self.index_transport = index_transport
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self.index_sizes = [None, None, None, None]
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('revision', revision_index),
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('inventory', inventory_index),
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('text', text_index),
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('signature', signature_index),
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if chk_index is not None:
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indices.append(('chk', chk_index))
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self.index_sizes.append(None)
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for index_type, index in indices:
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offset = self.index_offset(index_type)
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self.index_sizes[offset] = index._size
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self.index_class = pack_collection._index_class
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self._pack_collection = pack_collection
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self._state = 'resumed'
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# XXX: perhaps check that the .pack file exists?
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def access_tuple(self):
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if self._state == 'finished':
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return Pack.access_tuple(self)
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elif self._state == 'resumed':
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return self.upload_transport, self.file_name()
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raise AssertionError(self._state)
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self.upload_transport.delete(self.file_name())
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indices = [self.revision_index, self.inventory_index, self.text_index,
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self.signature_index]
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if self.chk_index is not None:
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indices.append(self.chk_index)
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for index in indices:
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index._transport.delete(index._name)
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self._check_references()
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index_types = ['revision', 'inventory', 'text', 'signature']
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if self.chk_index is not None:
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index_types.append('chk')
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for index_type in index_types:
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old_name = self.index_name(index_type, self.name)
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new_name = '../indices/' + old_name
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self.upload_transport.move(old_name, new_name)
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self._replace_index_with_readonly(index_type)
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new_name = '../packs/' + self.file_name()
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self.upload_transport.move(self.file_name(), new_name)
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self._state = 'finished'
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def _get_external_refs(self, index):
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"""Return compression parents for this index that are not present.
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This returns any compression parents that are referenced by this index,
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which are not contained *in* this index. They may be present elsewhere.
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return index.external_references(1)
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return "<bzrlib.repofmt.pack_repo.Pack object at 0x%x, %s, %s" % (
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id(self), self.transport, self.name)
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class NewPack(Pack):
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"""An in memory proxy for a pack which is being created."""
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def __init__(self, pack_collection, upload_suffix='', file_mode=None):
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# A map of index 'type' to the file extension and position in the
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index_definitions = {
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'revision': ('.rix', 0),
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'inventory': ('.iix', 1),
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'signature': ('.six', 3),
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def __init__(self, upload_transport, index_transport, pack_transport,
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upload_suffix='', file_mode=None):
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"""Create a NewPack instance.
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:param pack_collection: A PackCollection into which this is being inserted.
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:param upload_transport: A writable transport for the pack to be
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incrementally uploaded to.
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:param index_transport: A writable transport for the pack's indices to
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be written to when the pack is finished.
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:param pack_transport: A writable transport for the pack to be renamed
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to when the upload is complete. This *must* be the same as
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upload_transport.clone('../packs').
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:param upload_suffix: An optional suffix to be given to any temporary
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files created during the pack creation. e.g '.autopack'
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:param file_mode: Unix permissions for newly created file.
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:param file_mode: An optional file mode to create the new files with.
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# The relative locations of the packs are constrained, but all are
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# passed in because the caller has them, so as to avoid object churn.
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index_builder_class = pack_collection._index_builder_class
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if pack_collection.chk_index is not None:
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chk_index = index_builder_class(reference_lists=0)
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Pack.__init__(self,
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# Revisions: parents list, no text compression.
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index_builder_class(reference_lists=1),
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InMemoryGraphIndex(reference_lists=1),
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# Inventory: We want to map compression only, but currently the
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# knit code hasn't been updated enough to understand that, so we
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# have a regular 2-list index giving parents and compression
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index_builder_class(reference_lists=2),
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InMemoryGraphIndex(reference_lists=2),
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# Texts: compression and per file graph, for all fileids - so two
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# reference lists and two elements in the key tuple.
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index_builder_class(reference_lists=2, key_elements=2),
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InMemoryGraphIndex(reference_lists=2, key_elements=2),
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# Signatures: Just blobs to store, no compression, no parents
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index_builder_class(reference_lists=0),
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# CHK based storage - just blobs, no compression or parents.
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InMemoryGraphIndex(reference_lists=0),
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self._pack_collection = pack_collection
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# When we make readonly indices, we need this.
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self.index_class = pack_collection._index_class
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# where should the new pack be opened
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self.upload_transport = pack_collection._upload_transport
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self.upload_transport = upload_transport
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# where are indices written out to
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self.index_transport = pack_collection._index_transport
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self.index_transport = index_transport
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# where is the pack renamed to when it is finished?
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self.pack_transport = pack_collection._pack_transport
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self.pack_transport = pack_transport
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# What file mode to upload the pack and indices with.
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self._file_mode = file_mode
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# tracks the content written to the .pack file.
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self._hash = osutils.md5()
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# a tuple with the length in bytes of the indices, once the pack
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# is finalised. (rev, inv, text, sigs, chk_if_in_use)
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self._hash = md5.new()
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# a four-tuple with the length in bytes of the indices, once the pack
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# is finalised. (rev, inv, text, sigs)
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self.index_sizes = None
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# How much data to cache when writing packs. Note that this is not
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# synchronised with reads, because it's not in the transport layer, so
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Sets self._text_filter appropriately.
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raise NotImplementedError(self._copy_inventory_texts)
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# select inventory keys
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inv_keys = self._revision_keys # currently the same keyspace, and note that
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# querying for keys here could introduce a bug where an inventory item
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# is missed, so do not change it to query separately without cross
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# checking like the text key check below.
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inventory_index_map = self._pack_collection._packs_list_to_pack_map_and_index_list(
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self.packs, 'inventory_index')[0]
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inv_nodes = self._pack_collection._index_contents(inventory_index_map, inv_keys)
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# copy inventory keys and adjust values
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# XXX: Should be a helper function to allow different inv representation
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self.pb.update("Copying inventory texts", 2)
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total_items, readv_group_iter = self._least_readv_node_readv(inv_nodes)
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inv_lines = self._copy_nodes_graph(inventory_index_map,
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self.new_pack._writer, self.new_pack.inventory_index,
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readv_group_iter, total_items, output_lines=True)
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if self.revision_ids:
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self._process_inventory_lines(inv_lines)
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# eat the iterator to cause it to execute.
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self._text_filter = None
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if 'pack' in debug.debug_flags:
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mutter('%s: create_pack: inventories copied: %s%s %d items t+%6.3fs',
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time.ctime(), self._pack_collection._upload_transport.base,
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self.new_pack.random_name,
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self.new_pack.inventory_index.key_count(),
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time.time() - new_pack.start_time)
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def _copy_text_texts(self):
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raise NotImplementedError(self._copy_text_texts)
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text_index_map, text_nodes = self._get_text_nodes()
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if self._text_filter is not None:
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# We could return the keys copied as part of the return value from
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# _copy_nodes_graph but this doesn't work all that well with the
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# need to get line output too, so we check separately, and as we're
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# going to buffer everything anyway, we check beforehand, which
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# saves reading knit data over the wire when we know there are
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text_nodes = set(text_nodes)
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present_text_keys = set(_node[1] for _node in text_nodes)
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missing_text_keys = set(self._text_filter) - present_text_keys
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if missing_text_keys:
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# TODO: raise a specific error that can handle many missing
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a_missing_key = missing_text_keys.pop()
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raise errors.RevisionNotPresent(a_missing_key[1],
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# copy text keys and adjust values
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self.pb.update("Copying content texts", 3)
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total_items, readv_group_iter = self._least_readv_node_readv(text_nodes)
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list(self._copy_nodes_graph(text_index_map, self.new_pack._writer,
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self.new_pack.text_index, readv_group_iter, total_items))
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self._log_copied_texts()
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def _check_references(self):
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"""Make sure our external refereneces are present."""
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external_refs = self.new_pack._external_compression_parents_of_texts()
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index = self._pack_collection.text_index.combined_index
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found_items = list(index.iter_entries(external_refs))
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if len(found_items) != len(external_refs):
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found_keys = set(k for idx, k, refs, value in found_items)
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missing_items = external_refs - found_keys
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missing_file_id, missing_revision_id = missing_items.pop()
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raise errors.RevisionNotPresent(missing_revision_id,
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def _create_pack_from_packs(self):
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raise NotImplementedError(self._create_pack_from_packs)
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self.pb.update("Opening pack", 0, 5)
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self.new_pack = self.open_pack()
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new_pack = self.new_pack
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# buffer data - we won't be reading-back during the pack creation and
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# this makes a significant difference on sftp pushes.
706
new_pack.set_write_cache_size(1024*1024)
707
if 'pack' in debug.debug_flags:
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plain_pack_list = ['%s%s' % (a_pack.pack_transport.base, a_pack.name)
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for a_pack in self.packs]
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if self.revision_ids is not None:
711
rev_count = len(self.revision_ids)
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mutter('%s: create_pack: creating pack from source packs: '
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'%s%s %s revisions wanted %s t=0',
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time.ctime(), self._pack_collection._upload_transport.base, new_pack.random_name,
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plain_pack_list, rev_count)
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self._copy_revision_texts()
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self._copy_inventory_texts()
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self._copy_text_texts()
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# select signature keys
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signature_filter = self._revision_keys # same keyspace
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signature_index_map = self._pack_collection._packs_list_to_pack_map_and_index_list(
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self.packs, 'signature_index')[0]
725
signature_nodes = self._pack_collection._index_contents(signature_index_map,
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# copy signature keys and adjust values
728
self.pb.update("Copying signature texts", 4)
729
self._copy_nodes(signature_nodes, signature_index_map, new_pack._writer,
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new_pack.signature_index)
731
if 'pack' in debug.debug_flags:
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mutter('%s: create_pack: revision signatures copied: %s%s %d items t+%6.3fs',
733
time.ctime(), self._pack_collection._upload_transport.base, new_pack.random_name,
734
new_pack.signature_index.key_count(),
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time.time() - new_pack.start_time)
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self._check_references()
737
if not self._use_pack(new_pack):
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self.pb.update("Finishing pack", 5)
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self._pack_collection.allocate(new_pack)
745
def _copy_nodes(self, nodes, index_map, writer, write_index):
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"""Copy knit nodes between packs with no graph references."""
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pb = ui.ui_factory.nested_progress_bar()
749
return self._do_copy_nodes(nodes, index_map, writer,
754
def _do_copy_nodes(self, nodes, index_map, writer, write_index, pb):
755
# for record verification
756
knit_data = _KnitData(None)
757
# plan a readv on each source pack:
759
nodes = sorted(nodes)
760
# how to map this into knit.py - or knit.py into this?
761
# we don't want the typical knit logic, we want grouping by pack
762
# at this point - perhaps a helper library for the following code
763
# duplication points?
765
for index, key, value in nodes:
766
if index not in request_groups:
767
request_groups[index] = []
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request_groups[index].append((key, value))
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pb.update("Copied record", record_index, len(nodes))
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for index, items in request_groups.iteritems():
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pack_readv_requests = []
773
for key, value in items:
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# ---- KnitGraphIndex.get_position
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bits = value[1:].split(' ')
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offset, length = int(bits[0]), int(bits[1])
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pack_readv_requests.append((offset, length, (key, value[0])))
778
# linear scan up the pack
779
pack_readv_requests.sort()
781
transport, path = index_map[index]
782
reader = pack.make_readv_reader(transport, path,
783
[offset[0:2] for offset in pack_readv_requests])
784
for (names, read_func), (_1, _2, (key, eol_flag)) in \
785
izip(reader.iter_records(), pack_readv_requests):
786
raw_data = read_func(None)
787
# check the header only
788
df, _ = knit_data._parse_record_header(key[-1], raw_data)
790
pos, size = writer.add_bytes_record(raw_data, names)
791
write_index.add_node(key, eol_flag + "%d %d" % (pos, size))
792
pb.update("Copied record", record_index)
795
def _copy_nodes_graph(self, index_map, writer, write_index,
796
readv_group_iter, total_items, output_lines=False):
797
"""Copy knit nodes between packs.
799
:param output_lines: Return lines present in the copied data as
800
an iterator of line,version_id.
802
pb = ui.ui_factory.nested_progress_bar()
804
for result in self._do_copy_nodes_graph(index_map, writer,
805
write_index, output_lines, pb, readv_group_iter, total_items):
808
# Python 2.4 does not permit try:finally: in a generator.
814
def _do_copy_nodes_graph(self, index_map, writer, write_index,
815
output_lines, pb, readv_group_iter, total_items):
816
# for record verification
817
knit_data = _KnitData(None)
818
# for line extraction when requested (inventories only)
820
factory = knit.KnitPlainFactory()
822
pb.update("Copied record", record_index, total_items)
823
for index, readv_vector, node_vector in readv_group_iter:
825
transport, path = index_map[index]
826
reader = pack.make_readv_reader(transport, path, readv_vector)
827
for (names, read_func), (key, eol_flag, references) in \
828
izip(reader.iter_records(), node_vector):
829
raw_data = read_func(None)
832
# read the entire thing
833
content, _ = knit_data._parse_record(version_id, raw_data)
834
if len(references[-1]) == 0:
835
line_iterator = factory.get_fulltext_content(content)
837
line_iterator = factory.get_linedelta_content(content)
838
for line in line_iterator:
839
yield line, version_id
841
# check the header only
842
df, _ = knit_data._parse_record_header(version_id, raw_data)
844
pos, size = writer.add_bytes_record(raw_data, names)
845
write_index.add_node(key, eol_flag + "%d %d" % (pos, size), references)
846
pb.update("Copied record", record_index)
849
def _get_text_nodes(self):
850
text_index_map = self._pack_collection._packs_list_to_pack_map_and_index_list(
851
self.packs, 'text_index')[0]
852
return text_index_map, self._pack_collection._index_contents(text_index_map,
855
def _least_readv_node_readv(self, nodes):
856
"""Generate request groups for nodes using the least readv's.
858
:param nodes: An iterable of graph index nodes.
859
:return: Total node count and an iterator of the data needed to perform
860
readvs to obtain the data for nodes. Each item yielded by the
861
iterator is a tuple with:
862
index, readv_vector, node_vector. readv_vector is a list ready to
863
hand to the transport readv method, and node_vector is a list of
864
(key, eol_flag, references) for the the node retrieved by the
865
matching readv_vector.
867
# group by pack so we do one readv per pack
868
nodes = sorted(nodes)
871
for index, key, value, references in nodes:
872
if index not in request_groups:
873
request_groups[index] = []
874
request_groups[index].append((key, value, references))
876
for index, items in request_groups.iteritems():
877
pack_readv_requests = []
878
for key, value, references in items:
879
# ---- KnitGraphIndex.get_position
880
bits = value[1:].split(' ')
881
offset, length = int(bits[0]), int(bits[1])
882
pack_readv_requests.append(
883
((offset, length), (key, value[0], references)))
884
# linear scan up the pack to maximum range combining.
885
pack_readv_requests.sort()
886
# split out the readv and the node data.
887
pack_readv = [readv for readv, node in pack_readv_requests]
888
node_vector = [node for readv, node in pack_readv_requests]
889
result.append((index, pack_readv, node_vector))
753
892
def _log_copied_texts(self):
754
893
if 'pack' in debug.debug_flags:
767
925
return new_pack.data_inserted()
928
class OptimisingPacker(Packer):
929
"""A packer which spends more time to create better disk layouts."""
931
def _revision_node_readv(self, revision_nodes):
932
"""Return the total revisions and the readv's to issue.
934
This sort places revisions in topological order with the ancestors
937
:param revision_nodes: The revision index contents for the packs being
938
incorporated into the new pack.
939
:return: As per _least_readv_node_readv.
941
# build an ancestors dict
944
for index, key, value, references in revision_nodes:
945
ancestors[key] = references[0]
946
by_key[key] = (index, value, references)
947
order = tsort.topo_sort(ancestors)
949
# Single IO is pathological, but it will work as a starting point.
951
for key in reversed(order):
952
index, value, references = by_key[key]
953
# ---- KnitGraphIndex.get_position
954
bits = value[1:].split(' ')
955
offset, length = int(bits[0]), int(bits[1])
957
(index, [(offset, length)], [(key, value[0], references)]))
958
# TODO: combine requests in the same index that are in ascending order.
959
return total, requests
962
class ReconcilePacker(Packer):
963
"""A packer which regenerates indices etc as it copies.
965
This is used by ``bzr reconcile`` to cause parent text pointers to be
969
def _extra_init(self):
970
self._data_changed = False
972
def _process_inventory_lines(self, inv_lines):
973
"""Generate a text key reference map rather for reconciling with."""
974
repo = self._pack_collection.repo
975
refs = repo._find_text_key_references_from_xml_inventory_lines(
977
self._text_refs = refs
978
# during reconcile we:
979
# - convert unreferenced texts to full texts
980
# - correct texts which reference a text not copied to be full texts
981
# - copy all others as-is but with corrected parents.
982
# - so at this point we don't know enough to decide what becomes a full
984
self._text_filter = None
986
def _copy_text_texts(self):
987
"""generate what texts we should have and then copy."""
988
self.pb.update("Copying content texts", 3)
989
# we have three major tasks here:
990
# 1) generate the ideal index
991
repo = self._pack_collection.repo
992
ancestors = dict([(key[0], tuple(ref[0] for ref in refs[0])) for
994
self.new_pack.revision_index.iter_all_entries()])
995
ideal_index = repo._generate_text_key_index(self._text_refs, ancestors)
996
# 2) generate a text_nodes list that contains all the deltas that can
997
# be used as-is, with corrected parents.
1000
discarded_nodes = []
1001
NULL_REVISION = _mod_revision.NULL_REVISION
1002
text_index_map, text_nodes = self._get_text_nodes()
1003
for node in text_nodes:
1009
ideal_parents = tuple(ideal_index[node[1]])
1011
discarded_nodes.append(node)
1012
self._data_changed = True
1014
if ideal_parents == (NULL_REVISION,):
1016
if ideal_parents == node[3][0]:
1018
ok_nodes.append(node)
1019
elif ideal_parents[0:1] == node[3][0][0:1]:
1020
# the left most parent is the same, or there are no parents
1021
# today. Either way, we can preserve the representation as
1022
# long as we change the refs to be inserted.
1023
self._data_changed = True
1024
ok_nodes.append((node[0], node[1], node[2],
1025
(ideal_parents, node[3][1])))
1026
self._data_changed = True
1028
# Reinsert this text completely
1029
bad_texts.append((node[1], ideal_parents))
1030
self._data_changed = True
1031
# we're finished with some data.
1034
# 3) bulk copy the ok data
1035
total_items, readv_group_iter = self._least_readv_node_readv(ok_nodes)
1036
list(self._copy_nodes_graph(text_index_map, self.new_pack._writer,
1037
self.new_pack.text_index, readv_group_iter, total_items))
1038
# 4) adhoc copy all the other texts.
1039
# We have to topologically insert all texts otherwise we can fail to
1040
# reconcile when parts of a single delta chain are preserved intact,
1041
# and other parts are not. E.g. Discarded->d1->d2->d3. d1 will be
1042
# reinserted, and if d3 has incorrect parents it will also be
1043
# reinserted. If we insert d3 first, d2 is present (as it was bulk
1044
# copied), so we will try to delta, but d2 is not currently able to be
1045
# extracted because it's basis d1 is not present. Topologically sorting
1046
# addresses this. The following generates a sort for all the texts that
1047
# are being inserted without having to reference the entire text key
1048
# space (we only topo sort the revisions, which is smaller).
1049
topo_order = tsort.topo_sort(ancestors)
1050
rev_order = dict(zip(topo_order, range(len(topo_order))))
1051
bad_texts.sort(key=lambda key:rev_order[key[0][1]])
1052
transaction = repo.get_transaction()
1053
file_id_index = GraphIndexPrefixAdapter(
1054
self.new_pack.text_index,
1056
add_nodes_callback=self.new_pack.text_index.add_nodes)
1057
knit_index = KnitGraphIndex(file_id_index,
1058
add_callback=file_id_index.add_nodes,
1059
deltas=True, parents=True)
1060
output_knit = knit.KnitVersionedFile('reconcile-texts',
1061
self._pack_collection.transport,
1064
access_method=_PackAccess(
1065
{self.new_pack.text_index:self.new_pack.access_tuple()},
1066
(self.new_pack._writer, self.new_pack.text_index)),
1067
factory=knit.KnitPlainFactory())
1068
for key, parent_keys in bad_texts:
1069
# We refer to the new pack to delta data being output.
1070
# A possible improvement would be to catch errors on short reads
1071
# and only flush then.
1072
self.new_pack.flush()
1074
for parent_key in parent_keys:
1075
if parent_key[0] != key[0]:
1076
# Graph parents must match the fileid
1077
raise errors.BzrError('Mismatched key parent %r:%r' %
1079
parents.append(parent_key[1])
1080
source_weave = repo.weave_store.get_weave(key[0], transaction)
1081
text_lines = source_weave.get_lines(key[1])
1082
# adapt the 'knit' to the current file_id.
1083
file_id_index = GraphIndexPrefixAdapter(
1084
self.new_pack.text_index,
1086
add_nodes_callback=self.new_pack.text_index.add_nodes)
1087
knit_index._graph_index = file_id_index
1088
knit_index._add_callback = file_id_index.add_nodes
1089
output_knit.add_lines_with_ghosts(
1090
key[1], parents, text_lines, random_id=True, check_content=False)
1091
# 5) check that nothing inserted has a reference outside the keyspace.
1092
missing_text_keys = self.new_pack._external_compression_parents_of_texts()
1093
if missing_text_keys:
1094
raise errors.BzrError('Reference to missing compression parents %r'
1096
self._log_copied_texts()
1098
def _use_pack(self, new_pack):
1099
"""Override _use_pack to check for reconcile having changed content."""
1100
# XXX: we might be better checking this at the copy time.
1101
original_inventory_keys = set()
1102
inv_index = self._pack_collection.inventory_index.combined_index
1103
for entry in inv_index.iter_all_entries():
1104
original_inventory_keys.add(entry[1])
1105
new_inventory_keys = set()
1106
for entry in new_pack.inventory_index.iter_all_entries():
1107
new_inventory_keys.add(entry[1])
1108
if new_inventory_keys != original_inventory_keys:
1109
self._data_changed = True
1110
return new_pack.data_inserted() and self._data_changed
770
1113
class RepositoryPackCollection(object):
771
"""Management of packs within a repository.
773
:ivar _names: map of {pack_name: (index_size,)}
777
resumed_pack_factory = None
778
normal_packer_class = None
779
optimising_packer_class = None
1114
"""Management of packs within a repository."""
781
1116
def __init__(self, repo, transport, index_transport, upload_transport,
782
pack_transport, index_builder_class, index_class,
784
1118
"""Create a new RepositoryPackCollection.
786
:param transport: Addresses the repository base directory
1120
:param transport: Addresses the repository base directory
787
1121
(typically .bzr/repository/).
788
1122
:param index_transport: Addresses the directory containing indices.
789
1123
:param upload_transport: Addresses the directory into which packs are written
790
1124
while they're being created.
791
1125
:param pack_transport: Addresses the directory of existing complete packs.
792
:param index_builder_class: The index builder class to use.
793
:param index_class: The index class to use.
794
:param use_chk_index: Whether to setup and manage a CHK index.
796
# XXX: This should call self.reset()
797
1127
self.repo = repo
798
1128
self.transport = transport
799
1129
self._index_transport = index_transport
800
1130
self._upload_transport = upload_transport
801
1131
self._pack_transport = pack_transport
802
self._index_builder_class = index_builder_class
803
self._index_class = index_class
804
self._suffix_offsets = {'.rix': 0, '.iix': 1, '.tix': 2, '.six': 3,
1132
self._suffix_offsets = {'.rix': 0, '.iix': 1, '.tix': 2, '.six': 3}
807
1134
# name:Pack mapping
809
1135
self._packs_by_name = {}
810
1136
# the previous pack-names content
811
1137
self._packs_at_load = None
812
1138
# when a pack is being created by this object, the state of that pack.
813
1139
self._new_pack = None
814
1140
# aggregated revision index data
815
flush = self._flush_new_pack
816
self.revision_index = AggregateIndex(self.reload_pack_names, flush)
817
self.inventory_index = AggregateIndex(self.reload_pack_names, flush)
818
self.text_index = AggregateIndex(self.reload_pack_names, flush)
819
self.signature_index = AggregateIndex(self.reload_pack_names, flush)
820
all_indices = [self.revision_index, self.inventory_index,
821
self.text_index, self.signature_index]
823
self.chk_index = AggregateIndex(self.reload_pack_names, flush)
824
all_indices.append(self.chk_index)
826
# used to determine if we're using a chk_index elsewhere.
827
self.chk_index = None
828
# Tell all the CombinedGraphIndex objects about each other, so they can
829
# share hints about which pack names to search first.
830
all_combined = [agg_idx.combined_index for agg_idx in all_indices]
831
for combined_idx in all_combined:
832
combined_idx.set_sibling_indices(
833
set(all_combined).difference([combined_idx]))
835
self._resumed_packs = []
836
self.config_stack = config.LocationStack(self.transport.base)
839
return '%s(%r)' % (self.__class__.__name__, self.repo)
1141
self.revision_index = AggregateIndex()
1142
self.inventory_index = AggregateIndex()
1143
self.text_index = AggregateIndex()
1144
self.signature_index = AggregateIndex()
841
1146
def add_pack_to_memory(self, pack):
842
1147
"""Make a Pack object available to the repository to satisfy queries.
844
1149
:param pack: A Pack object.
846
if pack.name in self._packs_by_name:
847
raise AssertionError(
848
'pack %s already in _packs_by_name' % (pack.name,))
1151
assert pack.name not in self._packs_by_name
849
1152
self.packs.append(pack)
850
1153
self._packs_by_name[pack.name] = pack
851
1154
self.revision_index.add_index(pack.revision_index, pack)
852
1155
self.inventory_index.add_index(pack.inventory_index, pack)
853
1156
self.text_index.add_index(pack.text_index, pack)
854
1157
self.signature_index.add_index(pack.signature_index, pack)
855
if self.chk_index is not None:
856
self.chk_index.add_index(pack.chk_index, pack)
1159
def _add_text_to_weave(self, file_id, revision_id, new_lines, parents,
1160
nostore_sha, random_revid):
1161
file_id_index = GraphIndexPrefixAdapter(
1162
self.text_index.combined_index,
1164
add_nodes_callback=self.text_index.add_callback)
1165
self.repo._text_knit._index._graph_index = file_id_index
1166
self.repo._text_knit._index._add_callback = file_id_index.add_nodes
1167
return self.repo._text_knit.add_lines_with_ghosts(
1168
revision_id, parents, new_lines, nostore_sha=nostore_sha,
1169
random_id=random_revid, check_content=False)[0:2]
858
1171
def all_packs(self):
859
1172
"""Return a list of all the Pack objects this repository has.
910
1219
# group their data with the relevant commit, and that may
911
1220
# involve rewriting ancient history - which autopack tries to
912
1221
# avoid. Alternatively we could not group the data but treat
913
# each of these as having a single revision, and thus add
1222
# each of these as having a single revision, and thus add
914
1223
# one revision for each to the total revision count, to get
915
1224
# a matching distribution.
917
1226
existing_packs.append((revision_count, pack))
918
1227
pack_operations = self.plan_autopack_combinations(
919
1228
existing_packs, pack_distribution)
920
num_new_packs = len(pack_operations)
921
num_old_packs = sum([len(po[1]) for po in pack_operations])
922
num_revs_affected = sum([po[0] for po in pack_operations])
923
mutter('Auto-packing repository %s, which has %d pack files, '
924
'containing %d revisions. Packing %d files into %d affecting %d'
925
' revisions', self, total_packs, total_revisions, num_old_packs,
926
num_new_packs, num_revs_affected)
927
result = self._execute_pack_operations(pack_operations, packer_class=self.normal_packer_class,
928
reload_func=self._restart_autopack)
929
mutter('Auto-packing repository %s completed', self)
1229
self._execute_pack_operations(pack_operations)
932
def _execute_pack_operations(self, pack_operations, packer_class,
1232
def _execute_pack_operations(self, pack_operations, _packer_class=Packer):
934
1233
"""Execute a series of pack operations.
936
1235
:param pack_operations: A list of [revision_count, packs_to_combine].
937
:param packer_class: The class of packer to use
938
:return: The new pack names.
1236
:param _packer_class: The class of packer to use (default: Packer).
940
1239
for revision_count, packs in pack_operations:
941
1240
# we may have no-ops from the setup logic
942
1241
if len(packs) == 0:
944
packer = packer_class(self, packs, '.autopack',
945
reload_func=reload_func)
947
result = packer.pack()
948
except errors.RetryWithNewPacks:
949
# An exception is propagating out of this context, make sure
950
# this packer has cleaned up. Packer() doesn't set its new_pack
951
# state into the RepositoryPackCollection object, so we only
952
# have access to it directly here.
953
if packer.new_pack is not None:
954
packer.new_pack.abort()
1243
_packer_class(self, packs, '.autopack').pack()
958
1244
for pack in packs:
959
1245
self._remove_pack_from_memory(pack)
960
1246
# record the newly available packs and stop advertising the old
963
for _, packs in pack_operations:
964
to_be_obsoleted.extend(packs)
965
result = self._save_pack_names(clear_obsolete_packs=True,
966
obsolete_packs=to_be_obsoleted)
969
def _flush_new_pack(self):
970
if self._new_pack is not None:
971
self._new_pack.flush()
1248
self._save_pack_names(clear_obsolete_packs=True)
1249
# Move the old packs out of the way now they are no longer referenced.
1250
for revision_count, packs in pack_operations:
1251
self._obsolete_packs(packs)
973
1253
def lock_names(self):
974
1254
"""Acquire the mutex around the pack-names index.
976
1256
This cannot be used in the middle of a read-only transaction on the
979
1259
self.repo.control_files.lock_write()
981
def _already_packed(self):
982
"""Is the collection already packed?"""
983
return not (self.repo._format.pack_compresses or (len(self._names) > 1))
985
def pack(self, hint=None, clean_obsolete_packs=False):
986
1262
"""Pack the pack collection totally."""
987
1263
self.ensure_loaded()
988
1264
total_packs = len(self._names)
989
if self._already_packed():
1266
# This is arguably wrong because we might not be optimal, but for
1267
# now lets leave it in. (e.g. reconcile -> one pack. But not
991
1270
total_revisions = self.revision_index.combined_index.key_count()
992
1271
# XXX: the following may want to be a class, to pack with a given
994
1273
mutter('Packing repository %s, which has %d pack files, '
995
'containing %d revisions with hint %r.', self, total_packs,
996
total_revisions, hint)
999
self._try_pack_operations(hint)
1000
except RetryPackOperations:
1004
if clean_obsolete_packs:
1005
self._clear_obsolete_packs()
1007
def _try_pack_operations(self, hint):
1008
"""Calculate the pack operations based on the hint (if any), and
1274
'containing %d revisions into 1 packs.', self, total_packs,
1011
1276
# determine which packs need changing
1277
pack_distribution = [1]
1012
1278
pack_operations = [[0, []]]
1013
1279
for pack in self.all_packs():
1014
if hint is None or pack.name in hint:
1015
# Either no hint was provided (so we are packing everything),
1016
# or this pack was included in the hint.
1017
pack_operations[-1][0] += pack.get_revision_count()
1018
pack_operations[-1][1].append(pack)
1019
self._execute_pack_operations(pack_operations,
1020
packer_class=self.optimising_packer_class,
1021
reload_func=self._restart_pack_operations)
1280
pack_operations[-1][0] += pack.get_revision_count()
1281
pack_operations[-1][1].append(pack)
1282
self._execute_pack_operations(pack_operations, OptimisingPacker)
1023
1284
def plan_autopack_combinations(self, existing_packs, pack_distribution):
1024
1285
"""Plan a pack operation.
1321
1488
self._packs_by_name = {}
1322
1489
self._packs_at_load = None
1491
def _make_index_map(self, index_suffix):
1492
"""Return information on existing indices.
1494
:param suffix: Index suffix added to pack name.
1496
:returns: (pack_map, indices) where indices is a list of GraphIndex
1497
objects, and pack_map is a mapping from those objects to the
1498
pack tuple they describe.
1500
# TODO: stop using this; it creates new indices unnecessarily.
1501
self.ensure_loaded()
1502
suffix_map = {'.rix': 'revision_index',
1503
'.six': 'signature_index',
1504
'.iix': 'inventory_index',
1505
'.tix': 'text_index',
1507
return self._packs_list_to_pack_map_and_index_list(self.all_packs(),
1508
suffix_map[index_suffix])
1510
def _packs_list_to_pack_map_and_index_list(self, packs, index_attribute):
1511
"""Convert a list of packs to an index pack map and index list.
1513
:param packs: The packs list to process.
1514
:param index_attribute: The attribute that the desired index is found
1516
:return: A tuple (map, list) where map contains the dict from
1517
index:pack_tuple, and lsit contains the indices in the same order
1523
index = getattr(pack, index_attribute)
1524
indices.append(index)
1525
pack_map[index] = (pack.pack_transport, pack.file_name())
1526
return pack_map, indices
1528
def _index_contents(self, pack_map, key_filter=None):
1529
"""Get an iterable of the index contents from a pack_map.
1531
:param pack_map: A map from indices to pack details.
1532
:param key_filter: An optional filter to limit the
1535
indices = [index for index in pack_map.iterkeys()]
1536
all_index = CombinedGraphIndex(indices)
1537
if key_filter is None:
1538
return all_index.iter_all_entries()
1540
return all_index.iter_entries(key_filter)
1324
1542
def _unlock_names(self):
1325
1543
"""Release the mutex around the pack-names index."""
1326
1544
self.repo.control_files.unlock()
1328
def _diff_pack_names(self):
1329
"""Read the pack names from disk, and compare it to the one in memory.
1331
:return: (disk_nodes, deleted_nodes, new_nodes)
1332
disk_nodes The final set of nodes that should be referenced
1333
deleted_nodes Nodes which have been removed from when we started
1334
new_nodes Nodes that are newly introduced
1336
# load the disk nodes across
1338
for index, key, value in self._iter_disk_pack_index():
1339
disk_nodes.add((key, value))
1340
orig_disk_nodes = set(disk_nodes)
1342
# do a two-way diff against our original content
1343
current_nodes = set()
1344
for name, sizes in self._names.iteritems():
1346
((name, ), ' '.join(str(size) for size in sizes)))
1348
# Packs no longer present in the repository, which were present when we
1349
# locked the repository
1350
deleted_nodes = self._packs_at_load - current_nodes
1351
# Packs which this process is adding
1352
new_nodes = current_nodes - self._packs_at_load
1354
# Update the disk_nodes set to include the ones we are adding, and
1355
# remove the ones which were removed by someone else
1356
disk_nodes.difference_update(deleted_nodes)
1357
disk_nodes.update(new_nodes)
1359
return disk_nodes, deleted_nodes, new_nodes, orig_disk_nodes
1361
def _syncronize_pack_names_from_disk_nodes(self, disk_nodes):
1362
"""Given the correct set of pack files, update our saved info.
1364
:return: (removed, added, modified)
1365
removed pack names removed from self._names
1366
added pack names added to self._names
1367
modified pack names that had changed value
1372
## self._packs_at_load = disk_nodes
1546
def _save_pack_names(self, clear_obsolete_packs=False):
1547
"""Save the list of packs.
1549
This will take out the mutex around the pack names list for the
1550
duration of the method call. If concurrent updates have been made, a
1551
three-way merge between the current list and the current in memory list
1554
:param clear_obsolete_packs: If True, clear out the contents of the
1555
obsolete_packs directory.
1559
builder = GraphIndexBuilder()
1560
# load the disk nodes across
1562
for index, key, value in self._iter_disk_pack_index():
1563
disk_nodes.add((key, value))
1564
# do a two-way diff against our original content
1565
current_nodes = set()
1566
for name, sizes in self._names.iteritems():
1568
((name, ), ' '.join(str(size) for size in sizes)))
1569
deleted_nodes = self._packs_at_load - current_nodes
1570
new_nodes = current_nodes - self._packs_at_load
1571
disk_nodes.difference_update(deleted_nodes)
1572
disk_nodes.update(new_nodes)
1573
# TODO: handle same-name, index-size-changes here -
1574
# e.g. use the value from disk, not ours, *unless* we're the one
1576
for key, value in disk_nodes:
1577
builder.add_node(key, value)
1578
self.transport.put_file('pack-names', builder.finish(),
1579
mode=self.repo.control_files._file_mode)
1580
# move the baseline forward
1581
self._packs_at_load = disk_nodes
1582
# now clear out the obsolete packs directory
1583
if clear_obsolete_packs:
1584
self.transport.clone('obsolete_packs').delete_multi(
1585
self.transport.list_dir('obsolete_packs'))
1587
self._unlock_names()
1588
# synchronise the memory packs list with what we just wrote:
1373
1589
new_names = dict(disk_nodes)
1374
1590
# drop no longer present nodes
1375
1591
for pack in self.all_packs():
1376
1592
if (pack.name,) not in new_names:
1377
removed.append(pack.name)
1378
1593
self._remove_pack_from_memory(pack)
1379
1594
# add new nodes/refresh existing ones
1380
1595
for key, value in disk_nodes:
1390
1605
# disk index because the set values are the same, unless
1391
1606
# the only index shows up as deleted by the set difference
1392
1607
# - which it may. Until there is a specific test for this,
1393
# assume it's broken. RBC 20071017.
1608
# assume its broken. RBC 20071017.
1394
1609
self._remove_pack_from_memory(self.get_pack_by_name(name))
1395
1610
self._names[name] = sizes
1396
1611
self.get_pack_by_name(name)
1397
modified.append(name)
1400
1614
self._names[name] = sizes
1401
1615
self.get_pack_by_name(name)
1403
return removed, added, modified
1405
def _save_pack_names(self, clear_obsolete_packs=False, obsolete_packs=None):
1406
"""Save the list of packs.
1408
This will take out the mutex around the pack names list for the
1409
duration of the method call. If concurrent updates have been made, a
1410
three-way merge between the current list and the current in memory list
1413
:param clear_obsolete_packs: If True, clear out the contents of the
1414
obsolete_packs directory.
1415
:param obsolete_packs: Packs that are obsolete once the new pack-names
1416
file has been written.
1417
:return: A list of the names saved that were not previously on disk.
1419
already_obsolete = []
1422
builder = self._index_builder_class()
1423
(disk_nodes, deleted_nodes, new_nodes,
1424
orig_disk_nodes) = self._diff_pack_names()
1425
# TODO: handle same-name, index-size-changes here -
1426
# e.g. use the value from disk, not ours, *unless* we're the one
1428
for key, value in disk_nodes:
1429
builder.add_node(key, value)
1430
self.transport.put_file('pack-names', builder.finish(),
1431
mode=self.repo.bzrdir._get_file_mode())
1432
self._packs_at_load = disk_nodes
1433
if clear_obsolete_packs:
1436
to_preserve = set([o.name for o in obsolete_packs])
1437
already_obsolete = self._clear_obsolete_packs(to_preserve)
1439
self._unlock_names()
1440
# synchronise the memory packs list with what we just wrote:
1441
self._syncronize_pack_names_from_disk_nodes(disk_nodes)
1443
# TODO: We could add one more condition here. "if o.name not in
1444
# orig_disk_nodes and o != the new_pack we haven't written to
1445
# disk yet. However, the new pack object is not easily
1446
# accessible here (it would have to be passed through the
1447
# autopacking code, etc.)
1448
obsolete_packs = [o for o in obsolete_packs
1449
if o.name not in already_obsolete]
1450
self._obsolete_packs(obsolete_packs)
1451
return [new_node[0][0] for new_node in new_nodes]
1453
def reload_pack_names(self):
1454
"""Sync our pack listing with what is present in the repository.
1456
This should be called when we find out that something we thought was
1457
present is now missing. This happens when another process re-packs the
1460
:return: True if the in-memory list of packs has been altered at all.
1462
# The ensure_loaded call is to handle the case where the first call
1463
# made involving the collection was to reload_pack_names, where we
1464
# don't have a view of disk contents. It's a bit of a bandaid, and
1465
# causes two reads of pack-names, but it's a rare corner case not
1466
# struck with regular push/pull etc.
1467
first_read = self.ensure_loaded()
1470
# out the new value.
1471
(disk_nodes, deleted_nodes, new_nodes,
1472
orig_disk_nodes) = self._diff_pack_names()
1473
# _packs_at_load is meant to be the explicit list of names in
1474
# 'pack-names' at then start. As such, it should not contain any
1475
# pending names that haven't been written out yet.
1476
self._packs_at_load = orig_disk_nodes
1478
modified) = self._syncronize_pack_names_from_disk_nodes(disk_nodes)
1479
if removed or added or modified:
1483
def _restart_autopack(self):
1484
"""Reload the pack names list, and restart the autopack code."""
1485
if not self.reload_pack_names():
1486
# Re-raise the original exception, because something went missing
1487
# and a restart didn't find it
1489
raise errors.RetryAutopack(self.repo, False, sys.exc_info())
1491
def _restart_pack_operations(self):
1492
"""Reload the pack names list, and restart the autopack code."""
1493
if not self.reload_pack_names():
1494
# Re-raise the original exception, because something went missing
1495
# and a restart didn't find it
1497
raise RetryPackOperations(self.repo, False, sys.exc_info())
1499
def _clear_obsolete_packs(self, preserve=None):
1500
"""Delete everything from the obsolete-packs directory.
1502
:return: A list of pack identifiers (the filename without '.pack') that
1503
were found in obsolete_packs.
1506
obsolete_pack_transport = self.transport.clone('obsolete_packs')
1507
if preserve is None:
1510
obsolete_pack_files = obsolete_pack_transport.list_dir('.')
1511
except errors.NoSuchFile:
1513
for filename in obsolete_pack_files:
1514
name, ext = osutils.splitext(filename)
1517
if name in preserve:
1520
obsolete_pack_transport.delete(filename)
1521
except (errors.PathError, errors.TransportError), e:
1522
warning("couldn't delete obsolete pack, skipping it:\n%s"
1526
1617
def _start_write_group(self):
1527
1618
# Do not permit preparation for writing if we're not in a 'write lock'.
1528
1619
if not self.repo.is_write_locked():
1529
1620
raise errors.NotWriteLocked(self)
1530
self._new_pack = self.pack_factory(self, upload_suffix='.pack',
1531
file_mode=self.repo.bzrdir._get_file_mode())
1621
self._new_pack = NewPack(self._upload_transport, self._index_transport,
1622
self._pack_transport, upload_suffix='.pack',
1623
file_mode=self.repo.control_files._file_mode)
1532
1624
# allow writing: queue writes to a new index
1533
1625
self.revision_index.add_writable_index(self._new_pack.revision_index,
1534
1626
self._new_pack)
1536
1628
self._new_pack)
1537
1629
self.text_index.add_writable_index(self._new_pack.text_index,
1538
1630
self._new_pack)
1539
self._new_pack.text_index.set_optimize(combine_backing_indices=False)
1540
1631
self.signature_index.add_writable_index(self._new_pack.signature_index,
1541
1632
self._new_pack)
1542
if self.chk_index is not None:
1543
self.chk_index.add_writable_index(self._new_pack.chk_index,
1545
self.repo.chk_bytes._index._add_callback = self.chk_index.add_callback
1546
self._new_pack.chk_index.set_optimize(combine_backing_indices=False)
1548
self.repo.inventories._index._add_callback = self.inventory_index.add_callback
1549
self.repo.revisions._index._add_callback = self.revision_index.add_callback
1550
self.repo.signatures._index._add_callback = self.signature_index.add_callback
1551
self.repo.texts._index._add_callback = self.text_index.add_callback
1634
# reused revision and signature knits may need updating
1636
# "Hysterical raisins. client code in bzrlib grabs those knits outside
1637
# of write groups and then mutates it inside the write group."
1638
if self.repo._revision_knit is not None:
1639
self.repo._revision_knit._index._add_callback = \
1640
self.revision_index.add_callback
1641
if self.repo._signature_knit is not None:
1642
self.repo._signature_knit._index._add_callback = \
1643
self.signature_index.add_callback
1644
# create a reused knit object for text addition in commit.
1645
self.repo._text_knit = self.repo.weave_store.get_weave_or_empty(
1553
1648
def _abort_write_group(self):
1554
1649
# FIXME: just drop the transient index.
1555
1650
# forget what names there are
1556
if self._new_pack is not None:
1557
operation = cleanup.OperationWithCleanups(self._new_pack.abort)
1558
operation.add_cleanup(setattr, self, '_new_pack', None)
1559
# If we aborted while in the middle of finishing the write
1560
# group, _remove_pack_indices could fail because the indexes are
1561
# already gone. But they're not there we shouldn't fail in this
1562
# case, so we pass ignore_missing=True.
1563
operation.add_cleanup(self._remove_pack_indices, self._new_pack,
1564
ignore_missing=True)
1565
operation.run_simple()
1566
for resumed_pack in self._resumed_packs:
1567
operation = cleanup.OperationWithCleanups(resumed_pack.abort)
1568
# See comment in previous finally block.
1569
operation.add_cleanup(self._remove_pack_indices, resumed_pack,
1570
ignore_missing=True)
1571
operation.run_simple()
1572
del self._resumed_packs[:]
1574
def _remove_resumed_pack_indices(self):
1575
for resumed_pack in self._resumed_packs:
1576
self._remove_pack_indices(resumed_pack)
1577
del self._resumed_packs[:]
1579
def _check_new_inventories(self):
1580
"""Detect missing inventories in this write group.
1582
:returns: list of strs, summarising any problems found. If the list is
1583
empty no problems were found.
1585
# The base implementation does no checks. GCRepositoryPackCollection
1651
self._new_pack.abort()
1652
self._remove_pack_indices(self._new_pack)
1653
self._new_pack = None
1654
self.repo._text_knit = None
1589
1656
def _commit_write_group(self):
1591
for prefix, versioned_file in (
1592
('revisions', self.repo.revisions),
1593
('inventories', self.repo.inventories),
1594
('texts', self.repo.texts),
1595
('signatures', self.repo.signatures),
1597
missing = versioned_file.get_missing_compression_parent_keys()
1598
all_missing.update([(prefix,) + key for key in missing])
1600
raise errors.BzrCheckError(
1601
"Repository %s has missing compression parent(s) %r "
1602
% (self.repo, sorted(all_missing)))
1603
problems = self._check_new_inventories()
1605
problems_summary = '\n'.join(problems)
1606
raise errors.BzrCheckError(
1607
"Cannot add revision(s) to repository: " + problems_summary)
1608
1657
self._remove_pack_indices(self._new_pack)
1609
any_new_content = False
1610
1658
if self._new_pack.data_inserted():
1611
1659
# get all the data to disk and read to use
1612
1660
self._new_pack.finish()
1613
1661
self.allocate(self._new_pack)
1614
1662
self._new_pack = None
1615
any_new_content = True
1617
self._new_pack.abort()
1618
self._new_pack = None
1619
for resumed_pack in self._resumed_packs:
1620
# XXX: this is a pretty ugly way to turn the resumed pack into a
1621
# properly committed pack.
1622
self._names[resumed_pack.name] = None
1623
self._remove_pack_from_memory(resumed_pack)
1624
resumed_pack.finish()
1625
self.allocate(resumed_pack)
1626
any_new_content = True
1627
del self._resumed_packs[:]
1629
result = self.autopack()
1663
if not self.autopack():
1631
1664
# when autopack takes no steps, the names list is still
1633
return self._save_pack_names()
1637
def _suspend_write_group(self):
1638
tokens = [pack.name for pack in self._resumed_packs]
1639
self._remove_pack_indices(self._new_pack)
1640
if self._new_pack.data_inserted():
1641
# get all the data to disk and read to use
1642
self._new_pack.finish(suspend=True)
1643
tokens.append(self._new_pack.name)
1644
self._new_pack = None
1666
self._save_pack_names()
1646
1668
self._new_pack.abort()
1647
1669
self._new_pack = None
1648
self._remove_resumed_pack_indices()
1651
def _resume_write_group(self, tokens):
1652
for token in tokens:
1653
self._resume_pack(token)
1656
class PackRepository(MetaDirVersionedFileRepository):
1657
"""Repository with knit objects stored inside pack containers.
1659
The layering for a KnitPackRepository is:
1661
Graph | HPSS | Repository public layer |
1662
===================================================
1663
Tuple based apis below, string based, and key based apis above
1664
---------------------------------------------------
1666
Provides .texts, .revisions etc
1667
This adapts the N-tuple keys to physical knit records which only have a
1668
single string identifier (for historical reasons), which in older formats
1669
was always the revision_id, and in the mapped code for packs is always
1670
the last element of key tuples.
1671
---------------------------------------------------
1673
A separate GraphIndex is used for each of the
1674
texts/inventories/revisions/signatures contained within each individual
1675
pack file. The GraphIndex layer works in N-tuples and is unaware of any
1677
===================================================
1681
# These attributes are inherited from the Repository base class. Setting
1682
# them to None ensures that if the constructor is changed to not initialize
1683
# them, or a subclass fails to call the constructor, that an error will
1684
# occur rather than the system working but generating incorrect data.
1685
_commit_builder_class = None
1688
def __init__(self, _format, a_bzrdir, control_files, _commit_builder_class,
1690
MetaDirRepository.__init__(self, _format, a_bzrdir, control_files)
1691
self._commit_builder_class = _commit_builder_class
1692
self._serializer = _serializer
1670
self.repo._text_knit = None
1673
class KnitPackRevisionStore(KnitRevisionStore):
1674
"""An object to adapt access from RevisionStore's to use KnitPacks.
1676
This class works by replacing the original RevisionStore.
1677
We need to do this because the KnitPackRevisionStore is less
1678
isolated in its layering - it uses services from the repo.
1681
def __init__(self, repo, transport, revisionstore):
1682
"""Create a KnitPackRevisionStore on repo with revisionstore.
1684
This will store its state in the Repository, use the
1685
indices to provide a KnitGraphIndex,
1686
and at the end of transactions write new indices.
1688
KnitRevisionStore.__init__(self, revisionstore.versioned_file_store)
1690
self._serializer = revisionstore._serializer
1691
self.transport = transport
1693
def get_revision_file(self, transaction):
1694
"""Get the revision versioned file object."""
1695
if getattr(self.repo, '_revision_knit', None) is not None:
1696
return self.repo._revision_knit
1697
self.repo._pack_collection.ensure_loaded()
1698
add_callback = self.repo._pack_collection.revision_index.add_callback
1699
# setup knit specific objects
1700
knit_index = KnitGraphIndex(
1701
self.repo._pack_collection.revision_index.combined_index,
1702
add_callback=add_callback)
1703
self.repo._revision_knit = knit.KnitVersionedFile(
1704
'revisions', self.transport.clone('..'),
1705
self.repo.control_files._file_mode,
1706
create=False, access_mode=self.repo._access_mode(),
1707
index=knit_index, delta=False, factory=knit.KnitPlainFactory(),
1708
access_method=self.repo._pack_collection.revision_index.knit_access)
1709
return self.repo._revision_knit
1711
def get_signature_file(self, transaction):
1712
"""Get the signature versioned file object."""
1713
if getattr(self.repo, '_signature_knit', None) is not None:
1714
return self.repo._signature_knit
1715
self.repo._pack_collection.ensure_loaded()
1716
add_callback = self.repo._pack_collection.signature_index.add_callback
1717
# setup knit specific objects
1718
knit_index = KnitGraphIndex(
1719
self.repo._pack_collection.signature_index.combined_index,
1720
add_callback=add_callback, parents=False)
1721
self.repo._signature_knit = knit.KnitVersionedFile(
1722
'signatures', self.transport.clone('..'),
1723
self.repo.control_files._file_mode,
1724
create=False, access_mode=self.repo._access_mode(),
1725
index=knit_index, delta=False, factory=knit.KnitPlainFactory(),
1726
access_method=self.repo._pack_collection.signature_index.knit_access)
1727
return self.repo._signature_knit
1730
class KnitPackTextStore(VersionedFileStore):
1731
"""Presents a TextStore abstraction on top of packs.
1733
This class works by replacing the original VersionedFileStore.
1734
We need to do this because the KnitPackRevisionStore is less
1735
isolated in its layering - it uses services from the repo and shares them
1736
with all the data written in a single write group.
1739
def __init__(self, repo, transport, weavestore):
1740
"""Create a KnitPackTextStore on repo with weavestore.
1742
This will store its state in the Repository, use the
1743
indices FileNames to provide a KnitGraphIndex,
1744
and at the end of transactions write new indices.
1746
# don't call base class constructor - it's not suitable.
1747
# no transient data stored in the transaction
1749
self._precious = False
1751
self.transport = transport
1752
self.weavestore = weavestore
1753
# XXX for check() which isn't updated yet
1754
self._transport = weavestore._transport
1756
def get_weave_or_empty(self, file_id, transaction):
1757
"""Get a 'Knit' backed by the .tix indices.
1759
The transaction parameter is ignored.
1761
self.repo._pack_collection.ensure_loaded()
1762
add_callback = self.repo._pack_collection.text_index.add_callback
1763
# setup knit specific objects
1764
file_id_index = GraphIndexPrefixAdapter(
1765
self.repo._pack_collection.text_index.combined_index,
1766
(file_id, ), 1, add_nodes_callback=add_callback)
1767
knit_index = KnitGraphIndex(file_id_index,
1768
add_callback=file_id_index.add_nodes,
1769
deltas=True, parents=True)
1770
return knit.KnitVersionedFile('text:' + file_id,
1771
self.transport.clone('..'),
1774
access_method=self.repo._pack_collection.text_index.knit_access,
1775
factory=knit.KnitPlainFactory())
1777
get_weave = get_weave_or_empty
1780
"""Generate a list of the fileids inserted, for use by check."""
1781
self.repo._pack_collection.ensure_loaded()
1783
for index, key, value, refs in \
1784
self.repo._pack_collection.text_index.combined_index.iter_all_entries():
1789
class InventoryKnitThunk(object):
1790
"""An object to manage thunking get_inventory_weave to pack based knits."""
1792
def __init__(self, repo, transport):
1793
"""Create an InventoryKnitThunk for repo at transport.
1795
This will store its state in the Repository, use the
1796
indices FileNames to provide a KnitGraphIndex,
1797
and at the end of transactions write a new index..
1800
self.transport = transport
1802
def get_weave(self):
1803
"""Get a 'Knit' that contains inventory data."""
1804
self.repo._pack_collection.ensure_loaded()
1805
add_callback = self.repo._pack_collection.inventory_index.add_callback
1806
# setup knit specific objects
1807
knit_index = KnitGraphIndex(
1808
self.repo._pack_collection.inventory_index.combined_index,
1809
add_callback=add_callback, deltas=True, parents=True)
1810
return knit.KnitVersionedFile(
1811
'inventory', self.transport.clone('..'),
1812
self.repo.control_files._file_mode,
1813
create=False, access_mode=self.repo._access_mode(),
1814
index=knit_index, delta=True, factory=knit.KnitPlainFactory(),
1815
access_method=self.repo._pack_collection.inventory_index.knit_access)
1818
class KnitPackRepository(KnitRepository):
1819
"""Experimental graph-knit using repository."""
1821
def __init__(self, _format, a_bzrdir, control_files, _revision_store,
1822
control_store, text_store, _commit_builder_class, _serializer):
1823
KnitRepository.__init__(self, _format, a_bzrdir, control_files,
1824
_revision_store, control_store, text_store, _commit_builder_class,
1826
index_transport = control_files._transport.clone('indices')
1827
self._pack_collection = RepositoryPackCollection(self, control_files._transport,
1829
control_files._transport.clone('upload'),
1830
control_files._transport.clone('packs'))
1831
self._revision_store = KnitPackRevisionStore(self, index_transport, self._revision_store)
1832
self.weave_store = KnitPackTextStore(self, index_transport, self.weave_store)
1833
self._inv_thunk = InventoryKnitThunk(self, index_transport)
1834
# True when the repository object is 'write locked' (as opposed to the
1835
# physical lock only taken out around changes to the pack-names list.)
1836
# Another way to represent this would be a decorator around the control
1837
# files object that presents logical locks as physical ones - if this
1838
# gets ugly consider that alternative design. RBC 20071011
1839
self._write_lock_count = 0
1840
self._transaction = None
1842
self._reconcile_does_inventory_gc = True
1693
1843
self._reconcile_fixes_text_parents = True
1694
if self._format.supports_external_lookups:
1695
self._unstacked_provider = graph.CachingParentsProvider(
1696
self._make_parents_provider_unstacked())
1698
self._unstacked_provider = graph.CachingParentsProvider(self)
1699
self._unstacked_provider.disable_cache()
1702
def _all_revision_ids(self):
1703
"""See Repository.all_revision_ids()."""
1704
return [key[0] for key in self.revisions.keys()]
1844
self._reconcile_backsup_inventory = False
1706
1846
def _abort_write_group(self):
1707
self.revisions._index._key_dependencies.clear()
1708
1847
self._pack_collection._abort_write_group()
1849
def _access_mode(self):
1850
"""Return 'w' or 'r' for depending on whether a write lock is active.
1852
This method is a helper for the Knit-thunking support objects.
1854
if self.is_write_locked():
1858
def _find_inconsistent_revision_parents(self):
1859
"""Find revisions with incorrectly cached parents.
1861
:returns: an iterator yielding tuples of (revison-id, parents-in-index,
1862
parents-in-revision).
1864
if not self.is_locked():
1865
raise errors.ObjectNotLocked(self)
1866
pb = ui.ui_factory.nested_progress_bar()
1869
revision_nodes = self._pack_collection.revision_index \
1870
.combined_index.iter_all_entries()
1871
index_positions = []
1872
# Get the cached index values for all revisions, and also the location
1873
# in each index of the revision text so we can perform linear IO.
1874
for index, key, value, refs in revision_nodes:
1875
pos, length = value[1:].split(' ')
1876
index_positions.append((index, int(pos), key[0],
1877
tuple(parent[0] for parent in refs[0])))
1878
pb.update("Reading revision index.", 0, 0)
1879
index_positions.sort()
1880
batch_count = len(index_positions) / 1000 + 1
1881
pb.update("Checking cached revision graph.", 0, batch_count)
1882
for offset in xrange(batch_count):
1883
pb.update("Checking cached revision graph.", offset)
1884
to_query = index_positions[offset * 1000:(offset + 1) * 1000]
1887
rev_ids = [item[2] for item in to_query]
1888
revs = self.get_revisions(rev_ids)
1889
for revision, item in zip(revs, to_query):
1890
index_parents = item[3]
1891
rev_parents = tuple(revision.parent_ids)
1892
if index_parents != rev_parents:
1893
result.append((revision.revision_id, index_parents, rev_parents))
1898
@symbol_versioning.deprecated_method(symbol_versioning.one_one)
1899
def get_parents(self, revision_ids):
1900
"""See graph._StackedParentsProvider.get_parents."""
1901
parent_map = self.get_parent_map(revision_ids)
1902
return [parent_map.get(r, None) for r in revision_ids]
1904
def get_parent_map(self, keys):
1905
"""See graph._StackedParentsProvider.get_parent_map
1907
This implementation accesses the combined revision index to provide
1910
self._pack_collection.ensure_loaded()
1911
index = self._pack_collection.revision_index.combined_index
1913
if _mod_revision.NULL_REVISION in keys:
1914
keys.discard(_mod_revision.NULL_REVISION)
1915
found_parents = {_mod_revision.NULL_REVISION:[]}
1918
search_keys = set((revision_id,) for revision_id in keys)
1919
for index, key, value, refs in index.iter_entries(search_keys):
1922
parents = (_mod_revision.NULL_REVISION,)
1924
parents = tuple(parent[0] for parent in parents)
1925
found_parents[key[0]] = parents
1926
return found_parents
1710
1928
def _make_parents_provider(self):
1711
if not self._format.supports_external_lookups:
1712
return self._unstacked_provider
1713
return graph.StackedParentsProvider(_LazyListJoin(
1714
[self._unstacked_provider], self._fallback_repositories))
1929
return graph.CachingParentsProvider(self)
1716
1931
def _refresh_data(self):
1717
if not self.is_locked():
1719
self._pack_collection.reload_pack_names()
1720
self._unstacked_provider.disable_cache()
1721
self._unstacked_provider.enable_cache()
1932
if self._write_lock_count == 1 or (
1933
self.control_files._lock_count == 1 and
1934
self.control_files._lock_mode == 'r'):
1935
# forget what names there are
1936
self._pack_collection.reset()
1937
# XXX: Better to do an in-memory merge when acquiring a new lock -
1938
# factor out code from _save_pack_names.
1939
self._pack_collection.ensure_loaded()
1723
1941
def _start_write_group(self):
1724
1942
self._pack_collection._start_write_group()
1726
1944
def _commit_write_group(self):
1727
hint = self._pack_collection._commit_write_group()
1728
self.revisions._index._key_dependencies.clear()
1729
# The commit may have added keys that were previously cached as
1730
# missing, so reset the cache.
1731
self._unstacked_provider.disable_cache()
1732
self._unstacked_provider.enable_cache()
1735
def suspend_write_group(self):
1736
# XXX check self._write_group is self.get_transaction()?
1737
tokens = self._pack_collection._suspend_write_group()
1738
self.revisions._index._key_dependencies.clear()
1739
self._write_group = None
1742
def _resume_write_group(self, tokens):
1743
self._start_write_group()
1745
self._pack_collection._resume_write_group(tokens)
1746
except errors.UnresumableWriteGroup:
1747
self._abort_write_group()
1749
for pack in self._pack_collection._resumed_packs:
1750
self.revisions._index.scan_unvalidated_index(pack.revision_index)
1945
return self._pack_collection._commit_write_group()
1947
def get_inventory_weave(self):
1948
return self._inv_thunk.get_weave()
1752
1950
def get_transaction(self):
1753
1951
if self._write_lock_count:
1906
2093
mutter('creating repository in %s.', a_bzrdir.transport.base)
1907
2094
dirs = ['indices', 'obsolete_packs', 'packs', 'upload']
1908
builder = self.index_builder_class()
2095
builder = GraphIndexBuilder()
1909
2096
files = [('pack-names', builder.finish())]
1910
2097
utf8_files = [('format', self.get_format_string())]
1912
2099
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1913
repository = self.open(a_bzrdir=a_bzrdir, _found=True)
1914
self._run_post_repo_init_hooks(repository, a_bzrdir, shared)
2100
return self.open(a_bzrdir=a_bzrdir, _found=True)
1917
2102
def open(self, a_bzrdir, _found=False, _override_transport=None):
1918
2103
"""See RepositoryFormat.open().
1920
2105
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1921
2106
repository at a slightly different url
1922
2107
than normal. I.e. during 'upgrade'.
1925
format = RepositoryFormatMetaDir.find_format(a_bzrdir)
2110
format = RepositoryFormat.find_format(a_bzrdir)
2111
assert format.__class__ == self.__class__
1926
2112
if _override_transport is not None:
1927
2113
repo_transport = _override_transport
1929
2115
repo_transport = a_bzrdir.get_repository_transport(None)
1930
2116
control_files = lockable_files.LockableFiles(repo_transport,
1931
2117
'lock', lockdir.LockDir)
2118
text_store = self._get_text_store(repo_transport, control_files)
2119
control_store = self._get_control_store(repo_transport, control_files)
2120
_revision_store = self._get_revision_store(repo_transport, control_files)
1932
2121
return self.repository_class(_format=self,
1933
2122
a_bzrdir=a_bzrdir,
1934
2123
control_files=control_files,
2124
_revision_store=_revision_store,
2125
control_store=control_store,
2126
text_store=text_store,
1935
2127
_commit_builder_class=self._commit_builder_class,
1936
2128
_serializer=self._serializer)
1939
class RetryPackOperations(errors.RetryWithNewPacks):
1940
"""Raised when we are packing and we find a missing file.
1942
Meant as a signaling exception, to tell the RepositoryPackCollection.pack
1943
code it should try again.
1946
internal_error = True
1948
_fmt = ("Pack files have changed, reload and try pack again."
1949
" context: %(context)s %(orig_error)s")
1952
class _DirectPackAccess(object):
1953
"""Access to data in one or more packs with less translation."""
1955
def __init__(self, index_to_packs, reload_func=None, flush_func=None):
1956
"""Create a _DirectPackAccess object.
1958
:param index_to_packs: A dict mapping index objects to the transport
1959
and file names for obtaining data.
1960
:param reload_func: A function to call if we determine that the pack
1961
files have moved and we need to reload our caches. See
1962
bzrlib.repo_fmt.pack_repo.AggregateIndex for more details.
1964
self._container_writer = None
1965
self._write_index = None
1966
self._indices = index_to_packs
1967
self._reload_func = reload_func
1968
self._flush_func = flush_func
1970
def add_raw_records(self, key_sizes, raw_data):
1971
"""Add raw knit bytes to a storage area.
1973
The data is spooled to the container writer in one bytes-record per
1976
:param sizes: An iterable of tuples containing the key and size of each
1978
:param raw_data: A bytestring containing the data.
1979
:return: A list of memos to retrieve the record later. Each memo is an
1980
opaque index memo. For _DirectPackAccess the memo is (index, pos,
1981
length), where the index field is the write_index object supplied
1982
to the PackAccess object.
1984
if type(raw_data) is not str:
1985
raise AssertionError(
1986
'data must be plain bytes was %s' % type(raw_data))
1989
for key, size in key_sizes:
1990
p_offset, p_length = self._container_writer.add_bytes_record(
1991
raw_data[offset:offset+size], [])
1993
result.append((self._write_index, p_offset, p_length))
1997
"""Flush pending writes on this access object.
1999
This will flush any buffered writes to a NewPack.
2001
if self._flush_func is not None:
2004
def get_raw_records(self, memos_for_retrieval):
2005
"""Get the raw bytes for a records.
2007
:param memos_for_retrieval: An iterable containing the (index, pos,
2008
length) memo for retrieving the bytes. The Pack access method
2009
looks up the pack to use for a given record in its index_to_pack
2011
:return: An iterator over the bytes of the records.
2013
# first pass, group into same-index requests
2015
current_index = None
2016
for (index, offset, length) in memos_for_retrieval:
2017
if current_index == index:
2018
current_list.append((offset, length))
2020
if current_index is not None:
2021
request_lists.append((current_index, current_list))
2022
current_index = index
2023
current_list = [(offset, length)]
2024
# handle the last entry
2025
if current_index is not None:
2026
request_lists.append((current_index, current_list))
2027
for index, offsets in request_lists:
2029
transport, path = self._indices[index]
2031
# A KeyError here indicates that someone has triggered an index
2032
# reload, and this index has gone missing, we need to start
2034
if self._reload_func is None:
2035
# If we don't have a _reload_func there is nothing that can
2038
raise errors.RetryWithNewPacks(index,
2039
reload_occurred=True,
2040
exc_info=sys.exc_info())
2042
reader = pack.make_readv_reader(transport, path, offsets)
2043
for names, read_func in reader.iter_records():
2044
yield read_func(None)
2045
except errors.NoSuchFile:
2046
# A NoSuchFile error indicates that a pack file has gone
2047
# missing on disk, we need to trigger a reload, and start over.
2048
if self._reload_func is None:
2050
raise errors.RetryWithNewPacks(transport.abspath(path),
2051
reload_occurred=False,
2052
exc_info=sys.exc_info())
2054
def set_writer(self, writer, index, transport_packname):
2055
"""Set a writer to use for adding data."""
2056
if index is not None:
2057
self._indices[index] = transport_packname
2058
self._container_writer = writer
2059
self._write_index = index
2061
def reload_or_raise(self, retry_exc):
2062
"""Try calling the reload function, or re-raise the original exception.
2064
This should be called after _DirectPackAccess raises a
2065
RetryWithNewPacks exception. This function will handle the common logic
2066
of determining when the error is fatal versus being temporary.
2067
It will also make sure that the original exception is raised, rather
2068
than the RetryWithNewPacks exception.
2070
If this function returns, then the calling function should retry
2071
whatever operation was being performed. Otherwise an exception will
2074
:param retry_exc: A RetryWithNewPacks exception.
2077
if self._reload_func is None:
2079
elif not self._reload_func():
2080
# The reload claimed that nothing changed
2081
if not retry_exc.reload_occurred:
2082
# If there wasn't an earlier reload, then we really were
2083
# expecting to find changes. We didn't find them, so this is a
2087
exc_class, exc_value, exc_traceback = retry_exc.exc_info
2088
raise exc_class, exc_value, exc_traceback
2131
class RepositoryFormatKnitPack1(RepositoryFormatPack):
2132
"""A no-subtrees parameterized Pack repository.
2134
This format was introduced in 0.92.
2137
repository_class = KnitPackRepository
2138
_commit_builder_class = PackCommitBuilder
2139
_serializer = xml5.serializer_v5
2141
def _get_matching_bzrdir(self):
2142
return bzrdir.format_registry.make_bzrdir('pack-0.92')
2144
def _ignore_setting_bzrdir(self, format):
2147
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2149
def get_format_string(self):
2150
"""See RepositoryFormat.get_format_string()."""
2151
return "Bazaar pack repository format 1 (needs bzr 0.92)\n"
2153
def get_format_description(self):
2154
"""See RepositoryFormat.get_format_description()."""
2155
return "Packs containing knits without subtree support"
2157
def check_conversion_target(self, target_format):
2161
class RepositoryFormatKnitPack3(RepositoryFormatPack):
2162
"""A subtrees parameterized Pack repository.
2164
This repository format uses the xml7 serializer to get:
2165
- support for recording full info about the tree root
2166
- support for recording tree-references
2168
This format was introduced in 0.92.
2171
repository_class = KnitPackRepository
2172
_commit_builder_class = PackRootCommitBuilder
2173
rich_root_data = True
2174
supports_tree_reference = True
2175
_serializer = xml7.serializer_v7
2177
def _get_matching_bzrdir(self):
2178
return bzrdir.format_registry.make_bzrdir(
2179
'pack-0.92-subtree')
2181
def _ignore_setting_bzrdir(self, format):
2184
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2186
def check_conversion_target(self, target_format):
2187
if not target_format.rich_root_data:
2188
raise errors.BadConversionTarget(
2189
'Does not support rich root data.', target_format)
2190
if not getattr(target_format, 'supports_tree_reference', False):
2191
raise errors.BadConversionTarget(
2192
'Does not support nested trees', target_format)
2194
def get_format_string(self):
2195
"""See RepositoryFormat.get_format_string()."""
2196
return "Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n"
2198
def get_format_description(self):
2199
"""See RepositoryFormat.get_format_description()."""
2200
return "Packs containing knits with subtree support\n"
2203
class RepositoryFormatKnitPack4(RepositoryFormatPack):
2204
"""A rich-root, no subtrees parameterized Pack repository.
2206
This repository format uses the xml6 serializer to get:
2207
- support for recording full info about the tree root
2209
This format was introduced in 1.0.
2212
repository_class = KnitPackRepository
2213
_commit_builder_class = PackRootCommitBuilder
2214
rich_root_data = True
2215
supports_tree_reference = False
2216
_serializer = xml6.serializer_v6
2218
def _get_matching_bzrdir(self):
2219
return bzrdir.format_registry.make_bzrdir(
2222
def _ignore_setting_bzrdir(self, format):
2225
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2227
def check_conversion_target(self, target_format):
2228
if not target_format.rich_root_data:
2229
raise errors.BadConversionTarget(
2230
'Does not support rich root data.', target_format)
2232
def get_format_string(self):
2233
"""See RepositoryFormat.get_format_string()."""
2234
return ("Bazaar pack repository format 1 with rich root"
2235
" (needs bzr 1.0)\n")
2237
def get_format_description(self):
2238
"""See RepositoryFormat.get_format_description()."""
2239
return "Packs containing knits with rich root support\n"
added
removed
bzrlib/repofmt/pack_repo.py
