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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from binascii import hexlify
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from copy import deepcopy
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from bzrlib import (
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revision as _mod_revision,
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from bzrlib.bundle import serializer
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from bzrlib.osutils import (
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from bzrlib.revisiontree import RevisionTree
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from bzrlib.store.versioned import VersionedFileStore
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from bzrlib.store.text import TextStore
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from bzrlib.testament import Testament
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.inter import InterObject
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from bzrlib.inventory import (
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.trace import (
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log_exception_quietly, note, mutter, mutter_callsite, warning)
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from bzrlib.inventory import Inventory, InventoryDirectory, ROOT_ID
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, note, warning
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# Old formats display a warning, but only once
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_deprecation_warning_done = False
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class CommitBuilder(object):
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"""Provides an interface to build up a commit.
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This allows describing a tree to be committed without needing to
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know the internals of the format of the repository.
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# all clients should supply tree roots.
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record_root_entry = True
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# the default CommitBuilder does not manage trees whose root is versioned.
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_versioned_root = False
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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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"""Initiate a CommitBuilder.
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:param repository: Repository to commit to.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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self._config = config
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if committer is None:
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self._committer = self._config.username()
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self._committer = committer
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self.new_inventory = Inventory(None)
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self._new_revision_id = revision_id
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self.parents = parents
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self.repository = repository
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if revprops is not None:
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self._validate_revprops(revprops)
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self._revprops.update(revprops)
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if timestamp is None:
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timestamp = time.time()
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# Restrict resolution to 1ms
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self._timestamp = round(timestamp, 3)
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self._timezone = osutils.local_time_offset()
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self._timezone = int(timezone)
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self._generate_revision_if_needed()
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self.__heads = graph.HeadsCache(repository.get_graph()).heads
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self._basis_delta = []
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# API compatibility, older code that used CommitBuilder did not call
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# .record_delete(), which means the delta that is computed would not be
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# valid. Callers that will call record_delete() should call
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# .will_record_deletes() to indicate that.
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self._recording_deletes = False
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# memo'd check for no-op commits.
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self._any_changes = False
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def any_changes(self):
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"""Return True if any entries were changed.
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This includes merge-only changes. It is the core for the --unchanged
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:return: True if any changes have occured.
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return self._any_changes
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def _validate_unicode_text(self, text, context):
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"""Verify things like commit messages don't have bogus characters."""
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raise ValueError('Invalid value for %s: %r' % (context, text))
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def _validate_revprops(self, revprops):
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for key, value in revprops.iteritems():
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# We know that the XML serializers do not round trip '\r'
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# correctly, so refuse to accept them
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if not isinstance(value, basestring):
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raise ValueError('revision property (%s) is not a valid'
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' (unicode) string: %r' % (key, value))
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self._validate_unicode_text(value,
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'revision property (%s)' % (key,))
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def commit(self, message):
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"""Make the actual commit.
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:return: The revision id of the recorded revision.
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self._validate_unicode_text(message, 'commit message')
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rev = _mod_revision.Revision(
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timestamp=self._timestamp,
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timezone=self._timezone,
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committer=self._committer,
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inventory_sha1=self.inv_sha1,
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revision_id=self._new_revision_id,
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properties=self._revprops)
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rev.parent_ids = self.parents
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self.repository.add_revision(self._new_revision_id, rev,
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self.new_inventory, self._config)
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self.repository.commit_write_group()
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return self._new_revision_id
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"""Abort the commit that is being built.
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self.repository.abort_write_group()
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def revision_tree(self):
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"""Return the tree that was just committed.
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After calling commit() this can be called to get a RevisionTree
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representing the newly committed tree. This is preferred to
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calling Repository.revision_tree() because that may require
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deserializing the inventory, while we already have a copy in
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if self.new_inventory is None:
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self.new_inventory = self.repository.get_inventory(
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self._new_revision_id)
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return RevisionTree(self.repository, self.new_inventory,
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self._new_revision_id)
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def finish_inventory(self):
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"""Tell the builder that the inventory is finished.
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:return: The inventory id in the repository, which can be used with
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repository.get_inventory.
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if self.new_inventory is None:
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# an inventory delta was accumulated without creating a new
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basis_id = self.basis_delta_revision
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# We ignore the 'inventory' returned by add_inventory_by_delta
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# because self.new_inventory is used to hint to the rest of the
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# system what code path was taken
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self.inv_sha1, _ = self.repository.add_inventory_by_delta(
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basis_id, self._basis_delta, self._new_revision_id,
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if self.new_inventory.root is None:
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raise AssertionError('Root entry should be supplied to'
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' record_entry_contents, as of bzr 0.10.')
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self.new_inventory.add(InventoryDirectory(ROOT_ID, '', None))
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self.new_inventory.revision_id = self._new_revision_id
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self.inv_sha1 = self.repository.add_inventory(
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self._new_revision_id,
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return self._new_revision_id
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def _gen_revision_id(self):
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"""Return new revision-id."""
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return generate_ids.gen_revision_id(self._config.username(),
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def _generate_revision_if_needed(self):
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"""Create a revision id if None was supplied.
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If the repository can not support user-specified revision ids
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they should override this function and raise CannotSetRevisionId
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if _new_revision_id is not None.
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:raises: CannotSetRevisionId
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if self._new_revision_id is None:
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self._new_revision_id = self._gen_revision_id()
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self.random_revid = True
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self.random_revid = False
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def _heads(self, file_id, revision_ids):
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"""Calculate the graph heads for revision_ids in the graph of file_id.
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This can use either a per-file graph or a global revision graph as we
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have an identity relationship between the two graphs.
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return self.__heads(revision_ids)
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def _check_root(self, ie, parent_invs, tree):
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"""Helper for record_entry_contents.
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:param ie: An entry being added.
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:param parent_invs: The inventories of the parent revisions of the
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:param tree: The tree that is being committed.
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# In this revision format, root entries have no knit or weave When
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# serializing out to disk and back in root.revision is always
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ie.revision = self._new_revision_id
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def _require_root_change(self, tree):
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"""Enforce an appropriate root object change.
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This is called once when record_iter_changes is called, if and only if
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the root was not in the delta calculated by record_iter_changes.
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:param tree: The tree which is being committed.
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# NB: if there are no parents then this method is not called, so no
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# need to guard on parents having length.
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entry = entry_factory['directory'](tree.path2id(''), '',
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entry.revision = self._new_revision_id
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self._basis_delta.append(('', '', entry.file_id, entry))
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def _get_delta(self, ie, basis_inv, path):
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"""Get a delta against the basis inventory for ie."""
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if ie.file_id not in basis_inv:
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result = (None, path, ie.file_id, ie)
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self._basis_delta.append(result)
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elif ie != basis_inv[ie.file_id]:
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# TODO: avoid tis id2path call.
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result = (basis_inv.id2path(ie.file_id), path, ie.file_id, ie)
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self._basis_delta.append(result)
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def get_basis_delta(self):
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"""Return the complete inventory delta versus the basis inventory.
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This has been built up with the calls to record_delete and
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record_entry_contents. The client must have already called
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will_record_deletes() to indicate that they will be generating a
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:return: An inventory delta, suitable for use with apply_delta, or
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Repository.add_inventory_by_delta, etc.
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if not self._recording_deletes:
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raise AssertionError("recording deletes not activated.")
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return self._basis_delta
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def record_delete(self, path, file_id):
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"""Record that a delete occured against a basis tree.
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This is an optional API - when used it adds items to the basis_delta
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being accumulated by the commit builder. It cannot be called unless the
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method will_record_deletes() has been called to inform the builder that
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a delta is being supplied.
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:param path: The path of the thing deleted.
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:param file_id: The file id that was deleted.
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if not self._recording_deletes:
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raise AssertionError("recording deletes not activated.")
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delta = (path, None, file_id, None)
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self._basis_delta.append(delta)
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self._any_changes = True
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def will_record_deletes(self):
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"""Tell the commit builder that deletes are being notified.
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This enables the accumulation of an inventory delta; for the resulting
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commit to be valid, deletes against the basis MUST be recorded via
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builder.record_delete().
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self._recording_deletes = True
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basis_id = self.parents[0]
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basis_id = _mod_revision.NULL_REVISION
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self.basis_delta_revision = basis_id
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def record_entry_contents(self, ie, parent_invs, path, tree,
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"""Record the content of ie from tree into the commit if needed.
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Side effect: sets ie.revision when unchanged
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:param ie: An inventory entry present in the commit.
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:param parent_invs: The inventories of the parent revisions of the
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:param path: The path the entry is at in the tree.
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:param tree: The tree which contains this entry and should be used to
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:param content_summary: Summary data from the tree about the paths
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content - stat, length, exec, sha/link target. This is only
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accessed when the entry has a revision of None - that is when it is
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a candidate to commit.
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:return: A tuple (change_delta, version_recorded, fs_hash).
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change_delta is an inventory_delta change for this entry against
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the basis tree of the commit, or None if no change occured against
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version_recorded is True if a new version of the entry has been
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recorded. For instance, committing a merge where a file was only
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changed on the other side will return (delta, False).
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fs_hash is either None, or the hash details for the path (currently
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a tuple of the contents sha1 and the statvalue returned by
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tree.get_file_with_stat()).
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if self.new_inventory.root is None:
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if ie.parent_id is not None:
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raise errors.RootMissing()
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self._check_root(ie, parent_invs, tree)
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if ie.revision is None:
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kind = content_summary[0]
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# ie is carried over from a prior commit
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# XXX: repository specific check for nested tree support goes here - if
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# the repo doesn't want nested trees we skip it ?
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if (kind == 'tree-reference' and
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not self.repository._format.supports_tree_reference):
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# mismatch between commit builder logic and repository:
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# this needs the entry creation pushed down into the builder.
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raise NotImplementedError('Missing repository subtree support.')
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self.new_inventory.add(ie)
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# TODO: slow, take it out of the inner loop.
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basis_inv = parent_invs[0]
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basis_inv = Inventory(root_id=None)
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# ie.revision is always None if the InventoryEntry is considered
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# for committing. We may record the previous parents revision if the
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# content is actually unchanged against a sole head.
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if ie.revision is not None:
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if not self._versioned_root and path == '':
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# repositories that do not version the root set the root's
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# revision to the new commit even when no change occurs (more
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# specifically, they do not record a revision on the root; and
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# the rev id is assigned to the root during deserialisation -
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# this masks when a change may have occurred against the basis.
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# To match this we always issue a delta, because the revision
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# of the root will always be changing.
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if ie.file_id in basis_inv:
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delta = (basis_inv.id2path(ie.file_id), path,
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delta = (None, path, ie.file_id, ie)
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self._basis_delta.append(delta)
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return delta, False, None
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# we don't need to commit this, because the caller already
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# determined that an existing revision of this file is
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# appropriate. If its not being considered for committing then
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# it and all its parents to the root must be unaltered so
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# no-change against the basis.
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if ie.revision == self._new_revision_id:
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raise AssertionError("Impossible situation, a skipped "
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"inventory entry (%r) claims to be modified in this "
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"commit (%r).", (ie, self._new_revision_id))
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return None, False, None
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# XXX: Friction: parent_candidates should return a list not a dict
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# so that we don't have to walk the inventories again.
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parent_candiate_entries = ie.parent_candidates(parent_invs)
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head_set = self._heads(ie.file_id, parent_candiate_entries.keys())
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for inv in parent_invs:
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if ie.file_id in inv:
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old_rev = inv[ie.file_id].revision
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if old_rev in head_set:
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heads.append(inv[ie.file_id].revision)
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head_set.remove(inv[ie.file_id].revision)
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# now we check to see if we need to write a new record to the
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# We write a new entry unless there is one head to the ancestors, and
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# the kind-derived content is unchanged.
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# Cheapest check first: no ancestors, or more the one head in the
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# ancestors, we write a new node.
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# There is a single head, look it up for comparison
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parent_entry = parent_candiate_entries[heads[0]]
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# if the non-content specific data has changed, we'll be writing a
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if (parent_entry.parent_id != ie.parent_id or
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parent_entry.name != ie.name):
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# now we need to do content specific checks:
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# if the kind changed the content obviously has
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if kind != parent_entry.kind:
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# Stat cache fingerprint feedback for the caller - None as we usually
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# don't generate one.
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if content_summary[2] is None:
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raise ValueError("Files must not have executable = None")
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# We can't trust a check of the file length because of content
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if (# if the exec bit has changed we have to store:
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parent_entry.executable != content_summary[2]):
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elif parent_entry.text_sha1 == content_summary[3]:
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# all meta and content is unchanged (using a hash cache
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# hit to check the sha)
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ie.revision = parent_entry.revision
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ie.text_size = parent_entry.text_size
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ie.text_sha1 = parent_entry.text_sha1
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ie.executable = parent_entry.executable
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return self._get_delta(ie, basis_inv, path), False, None
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# Either there is only a hash change(no hash cache entry,
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# or same size content change), or there is no change on
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# Provide the parent's hash to the store layer, so that the
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# content is unchanged we will not store a new node.
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nostore_sha = parent_entry.text_sha1
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# We want to record a new node regardless of the presence or
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# absence of a content change in the file.
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ie.executable = content_summary[2]
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file_obj, stat_value = tree.get_file_with_stat(ie.file_id, path)
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text = file_obj.read()
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ie.text_sha1, ie.text_size = self._add_text_to_weave(
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ie.file_id, text, heads, nostore_sha)
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# Let the caller know we generated a stat fingerprint.
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fingerprint = (ie.text_sha1, stat_value)
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except errors.ExistingContent:
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# Turns out that the file content was unchanged, and we were
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# only going to store a new node if it was changed. Carry over
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ie.revision = parent_entry.revision
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ie.text_size = parent_entry.text_size
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ie.text_sha1 = parent_entry.text_sha1
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ie.executable = parent_entry.executable
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return self._get_delta(ie, basis_inv, path), False, None
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elif kind == 'directory':
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# all data is meta here, nothing specific to directory, so
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ie.revision = parent_entry.revision
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return self._get_delta(ie, basis_inv, path), False, None
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self._add_text_to_weave(ie.file_id, '', heads, None)
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elif kind == 'symlink':
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current_link_target = content_summary[3]
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# symlink target is not generic metadata, check if it has
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if current_link_target != parent_entry.symlink_target:
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# unchanged, carry over.
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ie.revision = parent_entry.revision
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ie.symlink_target = parent_entry.symlink_target
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return self._get_delta(ie, basis_inv, path), False, None
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ie.symlink_target = current_link_target
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self._add_text_to_weave(ie.file_id, '', heads, None)
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elif kind == 'tree-reference':
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if content_summary[3] != parent_entry.reference_revision:
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# unchanged, carry over.
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ie.reference_revision = parent_entry.reference_revision
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ie.revision = parent_entry.revision
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return self._get_delta(ie, basis_inv, path), False, None
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ie.reference_revision = content_summary[3]
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if ie.reference_revision is None:
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raise AssertionError("invalid content_summary for nested tree: %r"
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% (content_summary,))
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self._add_text_to_weave(ie.file_id, '', heads, None)
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raise NotImplementedError('unknown kind')
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ie.revision = self._new_revision_id
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self._any_changes = True
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return self._get_delta(ie, basis_inv, path), True, fingerprint
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def record_iter_changes(self, tree, basis_revision_id, iter_changes,
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_entry_factory=entry_factory):
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"""Record a new tree via iter_changes.
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:param tree: The tree to obtain text contents from for changed objects.
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:param basis_revision_id: The revision id of the tree the iter_changes
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has been generated against. Currently assumed to be the same
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as self.parents[0] - if it is not, errors may occur.
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:param iter_changes: An iter_changes iterator with the changes to apply
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to basis_revision_id. The iterator must not include any items with
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a current kind of None - missing items must be either filtered out
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or errored-on beefore record_iter_changes sees the item.
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:param _entry_factory: Private method to bind entry_factory locally for
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:return: A generator of (file_id, relpath, fs_hash) tuples for use with
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# Create an inventory delta based on deltas between all the parents and
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# deltas between all the parent inventories. We use inventory delta's
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# between the inventory objects because iter_changes masks
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# last-changed-field only changes.
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# file_id -> change map, change is fileid, paths, changed, versioneds,
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# parents, names, kinds, executables
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# {file_id -> revision_id -> inventory entry, for entries in parent
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# trees that are not parents[0]
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revtrees = list(self.repository.revision_trees(self.parents))
592
except errors.NoSuchRevision:
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# one or more ghosts, slow path.
595
for revision_id in self.parents:
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revtrees.append(self.repository.revision_tree(revision_id))
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except errors.NoSuchRevision:
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basis_revision_id = _mod_revision.NULL_REVISION
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revtrees.append(self.repository.revision_tree(
603
_mod_revision.NULL_REVISION))
604
# The basis inventory from a repository
606
basis_inv = revtrees[0].inventory
608
basis_inv = self.repository.revision_tree(
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_mod_revision.NULL_REVISION).inventory
610
if len(self.parents) > 0:
611
if basis_revision_id != self.parents[0] and not ghost_basis:
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"arbitrary basis parents not yet supported with merges")
614
for revtree in revtrees[1:]:
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for change in revtree.inventory._make_delta(basis_inv):
616
if change[1] is None:
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# Not present in this parent.
619
if change[2] not in merged_ids:
620
if change[0] is not None:
621
basis_entry = basis_inv[change[2]]
622
merged_ids[change[2]] = [
624
basis_entry.revision,
627
parent_entries[change[2]] = {
629
basis_entry.revision:basis_entry,
631
change[3].revision:change[3],
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merged_ids[change[2]] = [change[3].revision]
635
parent_entries[change[2]] = {change[3].revision:change[3]}
637
merged_ids[change[2]].append(change[3].revision)
638
parent_entries[change[2]][change[3].revision] = change[3]
641
# Setup the changes from the tree:
642
# changes maps file_id -> (change, [parent revision_ids])
644
for change in iter_changes:
645
# This probably looks up in basis_inv way to much.
646
if change[1][0] is not None:
647
head_candidate = [basis_inv[change[0]].revision]
650
changes[change[0]] = change, merged_ids.get(change[0],
652
unchanged_merged = set(merged_ids) - set(changes)
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# Extend the changes dict with synthetic changes to record merges of
655
for file_id in unchanged_merged:
656
# Record a merged version of these items that did not change vs the
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# basis. This can be either identical parallel changes, or a revert
658
# of a specific file after a merge. The recorded content will be
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# that of the current tree (which is the same as the basis), but
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# the per-file graph will reflect a merge.
661
# NB:XXX: We are reconstructing path information we had, this
662
# should be preserved instead.
663
# inv delta change: (file_id, (path_in_source, path_in_target),
664
# changed_content, versioned, parent, name, kind,
667
basis_entry = basis_inv[file_id]
668
except errors.NoSuchId:
669
# a change from basis->some_parents but file_id isn't in basis
670
# so was new in the merge, which means it must have changed
671
# from basis -> current, and as it hasn't the add was reverted
672
# by the user. So we discard this change.
676
(basis_inv.id2path(file_id), tree.id2path(file_id)),
678
(basis_entry.parent_id, basis_entry.parent_id),
679
(basis_entry.name, basis_entry.name),
680
(basis_entry.kind, basis_entry.kind),
681
(basis_entry.executable, basis_entry.executable))
682
changes[file_id] = (change, merged_ids[file_id])
683
# changes contains tuples with the change and a set of inventory
684
# candidates for the file.
686
# old_path, new_path, file_id, new_inventory_entry
687
seen_root = False # Is the root in the basis delta?
688
inv_delta = self._basis_delta
689
modified_rev = self._new_revision_id
690
for change, head_candidates in changes.values():
691
if change[3][1]: # versioned in target.
692
# Several things may be happening here:
693
# We may have a fork in the per-file graph
694
# - record a change with the content from tree
695
# We may have a change against < all trees
696
# - carry over the tree that hasn't changed
697
# We may have a change against all trees
698
# - record the change with the content from tree
701
entry = _entry_factory[kind](file_id, change[5][1],
703
head_set = self._heads(change[0], set(head_candidates))
706
for head_candidate in head_candidates:
707
if head_candidate in head_set:
708
heads.append(head_candidate)
709
head_set.remove(head_candidate)
712
# Could be a carry-over situation:
713
parent_entry_revs = parent_entries.get(file_id, None)
714
if parent_entry_revs:
715
parent_entry = parent_entry_revs.get(heads[0], None)
718
if parent_entry is None:
719
# The parent iter_changes was called against is the one
720
# that is the per-file head, so any change is relevant
721
# iter_changes is valid.
722
carry_over_possible = False
724
# could be a carry over situation
725
# A change against the basis may just indicate a merge,
726
# we need to check the content against the source of the
727
# merge to determine if it was changed after the merge
729
if (parent_entry.kind != entry.kind or
730
parent_entry.parent_id != entry.parent_id or
731
parent_entry.name != entry.name):
732
# Metadata common to all entries has changed
733
# against per-file parent
734
carry_over_possible = False
736
carry_over_possible = True
737
# per-type checks for changes against the parent_entry
740
# Cannot be a carry-over situation
741
carry_over_possible = False
742
# Populate the entry in the delta
744
# XXX: There is still a small race here: If someone reverts the content of a file
745
# after iter_changes examines and decides it has changed,
746
# we will unconditionally record a new version even if some
747
# other process reverts it while commit is running (with
748
# the revert happening after iter_changes did it's
751
entry.executable = True
753
entry.executable = False
754
if (carry_over_possible and
755
parent_entry.executable == entry.executable):
756
# Check the file length, content hash after reading
758
nostore_sha = parent_entry.text_sha1
761
file_obj, stat_value = tree.get_file_with_stat(file_id, change[1][1])
763
text = file_obj.read()
767
entry.text_sha1, entry.text_size = self._add_text_to_weave(
768
file_id, text, heads, nostore_sha)
769
yield file_id, change[1][1], (entry.text_sha1, stat_value)
770
except errors.ExistingContent:
771
# No content change against a carry_over parent
772
# Perhaps this should also yield a fs hash update?
774
entry.text_size = parent_entry.text_size
775
entry.text_sha1 = parent_entry.text_sha1
776
elif kind == 'symlink':
778
entry.symlink_target = tree.get_symlink_target(file_id)
779
if (carry_over_possible and
780
parent_entry.symlink_target == entry.symlink_target):
783
self._add_text_to_weave(change[0], '', heads, None)
784
elif kind == 'directory':
785
if carry_over_possible:
788
# Nothing to set on the entry.
789
# XXX: split into the Root and nonRoot versions.
790
if change[1][1] != '' or self.repository.supports_rich_root():
791
self._add_text_to_weave(change[0], '', heads, None)
792
elif kind == 'tree-reference':
793
if not self.repository._format.supports_tree_reference:
794
# This isn't quite sane as an error, but we shouldn't
795
# ever see this code path in practice: tree's don't
796
# permit references when the repo doesn't support tree
798
raise errors.UnsupportedOperation(tree.add_reference,
800
reference_revision = tree.get_reference_revision(change[0])
801
entry.reference_revision = reference_revision
802
if (carry_over_possible and
803
parent_entry.reference_revision == reference_revision):
806
self._add_text_to_weave(change[0], '', heads, None)
808
raise AssertionError('unknown kind %r' % kind)
810
entry.revision = modified_rev
812
entry.revision = parent_entry.revision
815
new_path = change[1][1]
816
inv_delta.append((change[1][0], new_path, change[0], entry))
819
self.new_inventory = None
821
# This should perhaps be guarded by a check that the basis we
822
# commit against is the basis for the commit and if not do a delta
824
self._any_changes = True
826
# housekeeping root entry changes do not affect no-change commits.
827
self._require_root_change(tree)
828
self.basis_delta_revision = basis_revision_id
830
def _add_text_to_weave(self, file_id, new_text, parents, nostore_sha):
831
parent_keys = tuple([(file_id, parent) for parent in parents])
832
return self.repository.texts._add_text(
833
(file_id, self._new_revision_id), parent_keys, new_text,
834
nostore_sha=nostore_sha, random_id=self.random_revid)[0:2]
837
class RootCommitBuilder(CommitBuilder):
838
"""This commitbuilder actually records the root id"""
840
# the root entry gets versioned properly by this builder.
841
_versioned_root = True
843
def _check_root(self, ie, parent_invs, tree):
844
"""Helper for record_entry_contents.
846
:param ie: An entry being added.
847
:param parent_invs: The inventories of the parent revisions of the
849
:param tree: The tree that is being committed.
852
def _require_root_change(self, tree):
853
"""Enforce an appropriate root object change.
855
This is called once when record_iter_changes is called, if and only if
856
the root was not in the delta calculated by record_iter_changes.
858
:param tree: The tree which is being committed.
860
# versioned roots do not change unless the tree found a change.
863
class RepositoryWriteLockResult(object):
864
"""The result of write locking a repository.
866
:ivar repository_token: The token obtained from the underlying lock, or
868
:ivar unlock: A callable which will unlock the lock.
871
def __init__(self, unlock, repository_token):
872
self.repository_token = repository_token
876
######################################################################
880
class Repository(_RelockDebugMixin, bzrdir.ControlComponent):
75
class Repository(object):
881
76
"""Repository holding history for one or more branches.
883
78
The repository holds and retrieves historical information including
884
79
revisions and file history. It's normally accessed only by the Branch,
885
80
which views a particular line of development through that history.
887
The Repository builds on top of some byte storage facilies (the revisions,
888
signatures, inventories, texts and chk_bytes attributes) and a Transport,
889
which respectively provide byte storage and a means to access the (possibly
82
The Repository builds on top of Stores and a Transport, which respectively
83
describe the disk data format and the way of accessing the (possibly
892
The byte storage facilities are addressed via tuples, which we refer to
893
as 'keys' throughout the code base. Revision_keys, inventory_keys and
894
signature_keys are all 1-tuples: (revision_id,). text_keys are two-tuples:
895
(file_id, revision_id). chk_bytes uses CHK keys - a 1-tuple with a single
896
byte string made up of a hash identifier and a hash value.
897
We use this interface because it allows low friction with the underlying
898
code that implements disk indices, network encoding and other parts of
901
:ivar revisions: A bzrlib.versionedfile.VersionedFiles instance containing
902
the serialised revisions for the repository. This can be used to obtain
903
revision graph information or to access raw serialised revisions.
904
The result of trying to insert data into the repository via this store
905
is undefined: it should be considered read-only except for implementors
907
:ivar signatures: A bzrlib.versionedfile.VersionedFiles instance containing
908
the serialised signatures for the repository. This can be used to
909
obtain access to raw serialised signatures. The result of trying to
910
insert data into the repository via this store is undefined: it should
911
be considered read-only except for implementors of repositories.
912
:ivar inventories: A bzrlib.versionedfile.VersionedFiles instance containing
913
the serialised inventories for the repository. This can be used to
914
obtain unserialised inventories. The result of trying to insert data
915
into the repository via this store is undefined: it should be
916
considered read-only except for implementors of repositories.
917
:ivar texts: A bzrlib.versionedfile.VersionedFiles instance containing the
918
texts of files and directories for the repository. This can be used to
919
obtain file texts or file graphs. Note that Repository.iter_file_bytes
920
is usually a better interface for accessing file texts.
921
The result of trying to insert data into the repository via this store
922
is undefined: it should be considered read-only except for implementors
924
:ivar chk_bytes: A bzrlib.versionedfile.VersionedFiles instance containing
925
any data the repository chooses to store or have indexed by its hash.
926
The result of trying to insert data into the repository via this store
927
is undefined: it should be considered read-only except for implementors
929
:ivar _transport: Transport for file access to repository, typically
930
pointing to .bzr/repository.
933
# What class to use for a CommitBuilder. Often its simpler to change this
934
# in a Repository class subclass rather than to override
935
# get_commit_builder.
936
_commit_builder_class = CommitBuilder
937
# The search regex used by xml based repositories to determine what things
938
# where changed in a single commit.
939
87
_file_ids_altered_regex = lazy_regex.lazy_compile(
940
88
r'file_id="(?P<file_id>[^"]+)"'
941
r'.* revision="(?P<revision_id>[^"]+)"'
89
r'.*revision="(?P<revision_id>[^"]+)"'
944
def abort_write_group(self, suppress_errors=False):
945
"""Commit the contents accrued within the current write group.
947
:param suppress_errors: if true, abort_write_group will catch and log
948
unexpected errors that happen during the abort, rather than
949
allowing them to propagate. Defaults to False.
951
:seealso: start_write_group.
953
if self._write_group is not self.get_transaction():
954
# has an unlock or relock occured ?
957
'(suppressed) mismatched lock context and write group. %r, %r',
958
self._write_group, self.get_transaction())
960
raise errors.BzrError(
961
'mismatched lock context and write group. %r, %r' %
962
(self._write_group, self.get_transaction()))
964
self._abort_write_group()
965
except Exception, exc:
966
self._write_group = None
967
if not suppress_errors:
969
mutter('abort_write_group failed')
970
log_exception_quietly()
971
note('bzr: ERROR (ignored): %s', exc)
972
self._write_group = None
974
def _abort_write_group(self):
975
"""Template method for per-repository write group cleanup.
977
This is called during abort before the write group is considered to be
978
finished and should cleanup any internal state accrued during the write
979
group. There is no requirement that data handed to the repository be
980
*not* made available - this is not a rollback - but neither should any
981
attempt be made to ensure that data added is fully commited. Abort is
982
invoked when an error has occured so futher disk or network operations
983
may not be possible or may error and if possible should not be
987
def add_fallback_repository(self, repository):
988
"""Add a repository to use for looking up data not held locally.
990
:param repository: A repository.
992
if not self._format.supports_external_lookups:
993
raise errors.UnstackableRepositoryFormat(self._format, self.base)
995
# This repository will call fallback.unlock() when we transition to
996
# the unlocked state, so we make sure to increment the lock count
997
repository.lock_read()
998
self._check_fallback_repository(repository)
999
self._fallback_repositories.append(repository)
1000
self.texts.add_fallback_versioned_files(repository.texts)
1001
self.inventories.add_fallback_versioned_files(repository.inventories)
1002
self.revisions.add_fallback_versioned_files(repository.revisions)
1003
self.signatures.add_fallback_versioned_files(repository.signatures)
1004
if self.chk_bytes is not None:
1005
self.chk_bytes.add_fallback_versioned_files(repository.chk_bytes)
1007
def _check_fallback_repository(self, repository):
1008
"""Check that this repository can fallback to repository safely.
1010
Raise an error if not.
1012
:param repository: A repository to fallback to.
1014
return InterRepository._assert_same_model(self, repository)
1016
def add_inventory(self, revision_id, inv, parents):
1017
"""Add the inventory inv to the repository as revision_id.
1019
:param parents: The revision ids of the parents that revision_id
93
def add_inventory(self, revid, inv, parents):
94
"""Add the inventory inv to the repository as revid.
96
:param parents: The revision ids of the parents that revid
1020
97
is known to have and are in the repository already.
1022
:returns: The validator(which is a sha1 digest, though what is sha'd is
1023
repository format specific) of the serialized inventory.
1025
if not self.is_in_write_group():
1026
raise AssertionError("%r not in write group" % (self,))
1027
_mod_revision.check_not_reserved_id(revision_id)
1028
if not (inv.revision_id is None or inv.revision_id == revision_id):
1029
raise AssertionError(
1030
"Mismatch between inventory revision"
1031
" id and insertion revid (%r, %r)"
1032
% (inv.revision_id, revision_id))
1033
if inv.root is None:
1034
raise AssertionError()
1035
return self._add_inventory_checked(revision_id, inv, parents)
1037
def _add_inventory_checked(self, revision_id, inv, parents):
1038
"""Add inv to the repository after checking the inputs.
1040
This function can be overridden to allow different inventory styles.
1042
:seealso: add_inventory, for the contract.
1044
inv_lines = self._serializer.write_inventory_to_lines(inv)
1045
return self._inventory_add_lines(revision_id, parents,
1046
inv_lines, check_content=False)
1048
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1049
parents, basis_inv=None, propagate_caches=False):
1050
"""Add a new inventory expressed as a delta against another revision.
1052
See the inventory developers documentation for the theory behind
1055
:param basis_revision_id: The inventory id the delta was created
1056
against. (This does not have to be a direct parent.)
1057
:param delta: The inventory delta (see Inventory.apply_delta for
1059
:param new_revision_id: The revision id that the inventory is being
1061
:param parents: The revision ids of the parents that revision_id is
1062
known to have and are in the repository already. These are supplied
1063
for repositories that depend on the inventory graph for revision
1064
graph access, as well as for those that pun ancestry with delta
1066
:param basis_inv: The basis inventory if it is already known,
1068
:param propagate_caches: If True, the caches for this inventory are
1069
copied to and updated for the result if possible.
1071
:returns: (validator, new_inv)
1072
The validator(which is a sha1 digest, though what is sha'd is
1073
repository format specific) of the serialized inventory, and the
1074
resulting inventory.
1076
if not self.is_in_write_group():
1077
raise AssertionError("%r not in write group" % (self,))
1078
_mod_revision.check_not_reserved_id(new_revision_id)
1079
basis_tree = self.revision_tree(basis_revision_id)
1080
basis_tree.lock_read()
1082
# Note that this mutates the inventory of basis_tree, which not all
1083
# inventory implementations may support: A better idiom would be to
1084
# return a new inventory, but as there is no revision tree cache in
1085
# repository this is safe for now - RBC 20081013
1086
if basis_inv is None:
1087
basis_inv = basis_tree.inventory
1088
basis_inv.apply_delta(delta)
1089
basis_inv.revision_id = new_revision_id
1090
return (self.add_inventory(new_revision_id, basis_inv, parents),
1095
def _inventory_add_lines(self, revision_id, parents, lines,
1096
check_content=True):
1097
"""Store lines in inv_vf and return the sha1 of the inventory."""
1098
parents = [(parent,) for parent in parents]
1099
result = self.inventories.add_lines((revision_id,), parents, lines,
1100
check_content=check_content)[0]
1101
self.inventories._access.flush()
1104
def add_revision(self, revision_id, rev, inv=None, config=None):
1105
"""Add rev to the revision store as revision_id.
1107
:param revision_id: the revision id to use.
99
returns the sha1 of the serialized inventory.
101
_mod_revision.check_not_reserved_id(revid)
102
assert inv.revision_id is None or inv.revision_id == revid, \
103
"Mismatch between inventory revision" \
104
" id and insertion revid (%r, %r)" % (inv.revision_id, revid)
105
assert inv.root is not None
106
inv_text = self.serialise_inventory(inv)
107
inv_sha1 = osutils.sha_string(inv_text)
108
inv_vf = self.control_weaves.get_weave('inventory',
109
self.get_transaction())
110
self._inventory_add_lines(inv_vf, revid, parents, osutils.split_lines(inv_text))
113
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
115
for parent in parents:
117
final_parents.append(parent)
119
inv_vf.add_lines(revid, final_parents, lines)
122
def add_revision(self, rev_id, rev, inv=None, config=None):
123
"""Add rev to the revision store as rev_id.
125
:param rev_id: the revision id to use.
1108
126
:param rev: The revision object.
1109
127
:param inv: The inventory for the revision. if None, it will be looked
1110
128
up in the inventory storer
1176
188
Returns a set of the present revisions.
1179
graph = self.get_graph()
1180
parent_map = graph.get_parent_map(revision_ids)
1181
# The old API returned a list, should this actually be a set?
1182
return parent_map.keys()
1184
def _check_inventories(self, checker):
1185
"""Check the inventories found from the revision scan.
1187
This is responsible for verifying the sha1 of inventories and
1188
creating a pending_keys set that covers data referenced by inventories.
1190
bar = ui.ui_factory.nested_progress_bar()
1192
self._do_check_inventories(checker, bar)
1196
def _do_check_inventories(self, checker, bar):
1197
"""Helper for _check_inventories."""
1199
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1200
kinds = ['chk_bytes', 'texts']
1201
count = len(checker.pending_keys)
1202
bar.update("inventories", 0, 2)
1203
current_keys = checker.pending_keys
1204
checker.pending_keys = {}
1205
# Accumulate current checks.
1206
for key in current_keys:
1207
if key[0] != 'inventories' and key[0] not in kinds:
1208
checker._report_items.append('unknown key type %r' % (key,))
1209
keys[key[0]].add(key[1:])
1210
if keys['inventories']:
1211
# NB: output order *should* be roughly sorted - topo or
1212
# inverse topo depending on repository - either way decent
1213
# to just delta against. However, pre-CHK formats didn't
1214
# try to optimise inventory layout on disk. As such the
1215
# pre-CHK code path does not use inventory deltas.
1217
for record in self.inventories.check(keys=keys['inventories']):
1218
if record.storage_kind == 'absent':
1219
checker._report_items.append(
1220
'Missing inventory {%s}' % (record.key,))
1222
last_object = self._check_record('inventories', record,
1223
checker, last_object,
1224
current_keys[('inventories',) + record.key])
1225
del keys['inventories']
1228
bar.update("texts", 1)
1229
while (checker.pending_keys or keys['chk_bytes']
1231
# Something to check.
1232
current_keys = checker.pending_keys
1233
checker.pending_keys = {}
1234
# Accumulate current checks.
1235
for key in current_keys:
1236
if key[0] not in kinds:
1237
checker._report_items.append('unknown key type %r' % (key,))
1238
keys[key[0]].add(key[1:])
1239
# Check the outermost kind only - inventories || chk_bytes || texts
1243
for record in getattr(self, kind).check(keys=keys[kind]):
1244
if record.storage_kind == 'absent':
1245
checker._report_items.append(
1246
'Missing %s {%s}' % (kind, record.key,))
1248
last_object = self._check_record(kind, record,
1249
checker, last_object, current_keys[(kind,) + record.key])
1253
def _check_record(self, kind, record, checker, last_object, item_data):
1254
"""Check a single text from this repository."""
1255
if kind == 'inventories':
1256
rev_id = record.key[0]
1257
inv = self._deserialise_inventory(rev_id,
1258
record.get_bytes_as('fulltext'))
1259
if last_object is not None:
1260
delta = inv._make_delta(last_object)
1261
for old_path, path, file_id, ie in delta:
1264
ie.check(checker, rev_id, inv)
1266
for path, ie in inv.iter_entries():
1267
ie.check(checker, rev_id, inv)
1268
if self._format.fast_deltas:
1270
elif kind == 'chk_bytes':
1271
# No code written to check chk_bytes for this repo format.
1272
checker._report_items.append(
1273
'unsupported key type chk_bytes for %s' % (record.key,))
1274
elif kind == 'texts':
1275
self._check_text(record, checker, item_data)
1277
checker._report_items.append(
1278
'unknown key type %s for %s' % (kind, record.key))
1280
def _check_text(self, record, checker, item_data):
1281
"""Check a single text."""
1282
# Check it is extractable.
1283
# TODO: check length.
1284
if record.storage_kind == 'chunked':
1285
chunks = record.get_bytes_as(record.storage_kind)
1286
sha1 = osutils.sha_strings(chunks)
1287
length = sum(map(len, chunks))
1289
content = record.get_bytes_as('fulltext')
1290
sha1 = osutils.sha_string(content)
1291
length = len(content)
1292
if item_data and sha1 != item_data[1]:
1293
checker._report_items.append(
1294
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1295
(record.key, sha1, item_data[1], item_data[2]))
191
for id in revision_ids:
192
if self.has_revision(id):
1298
197
def create(a_bzrdir):
1299
198
"""Construct the current default format repository in a_bzrdir."""
1300
199
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
1302
def __init__(self, _format, a_bzrdir, control_files):
201
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1303
202
"""instantiate a Repository.
1305
204
:param _format: The format of the repository on disk.
1306
205
:param a_bzrdir: The BzrDir of the repository.
207
In the future we will have a single api for all stores for
208
getting file texts, inventories and revisions, then
209
this construct will accept instances of those things.
1308
# In the future we will have a single api for all stores for
1309
# getting file texts, inventories and revisions, then
1310
# this construct will accept instances of those things.
1311
211
super(Repository, self).__init__()
1312
212
self._format = _format
1313
213
# the following are part of the public API for Repository:
1314
214
self.bzrdir = a_bzrdir
1315
215
self.control_files = control_files
1316
self._transport = control_files._transport
1317
self.base = self._transport.base
1319
self._reconcile_does_inventory_gc = True
1320
self._reconcile_fixes_text_parents = False
1321
self._reconcile_backsup_inventory = True
1322
self._write_group = None
1323
# Additional places to query for data.
1324
self._fallback_repositories = []
1325
# An InventoryEntry cache, used during deserialization
1326
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1327
# Is it safe to return inventory entries directly from the entry cache,
1328
# rather copying them?
1329
self._safe_to_return_from_cache = False
1332
def user_transport(self):
1333
return self.bzrdir.user_transport
1336
def control_transport(self):
1337
return self._transport
216
self._revision_store = _revision_store
217
self.text_store = text_store
218
# backwards compatibility
219
self.weave_store = text_store
220
# not right yet - should be more semantically clear ?
222
self.control_store = control_store
223
self.control_weaves = control_store
224
# TODO: make sure to construct the right store classes, etc, depending
225
# on whether escaping is required.
226
self._warn_if_deprecated()
227
self._serializer = xml5.serializer_v5
1339
229
def __repr__(self):
1340
if self._fallback_repositories:
1341
return '%s(%r, fallback_repositories=%r)' % (
1342
self.__class__.__name__,
1344
self._fallback_repositories)
1346
return '%s(%r)' % (self.__class__.__name__,
1349
def _has_same_fallbacks(self, other_repo):
1350
"""Returns true if the repositories have the same fallbacks."""
1351
my_fb = self._fallback_repositories
1352
other_fb = other_repo._fallback_repositories
1353
if len(my_fb) != len(other_fb):
1355
for f, g in zip(my_fb, other_fb):
1356
if not f.has_same_location(g):
1360
def has_same_location(self, other):
1361
"""Returns a boolean indicating if this repository is at the same
1362
location as another repository.
1364
This might return False even when two repository objects are accessing
1365
the same physical repository via different URLs.
1367
if self.__class__ is not other.__class__:
1369
return (self._transport.base == other._transport.base)
1371
def is_in_write_group(self):
1372
"""Return True if there is an open write group.
1374
:seealso: start_write_group.
1376
return self._write_group is not None
230
return '%s(%r)' % (self.__class__.__name__,
231
self.bzrdir.transport.base)
1378
233
def is_locked(self):
1379
234
return self.control_files.is_locked()
1381
def is_write_locked(self):
1382
"""Return True if this object is write locked."""
1383
return self.is_locked() and self.control_files._lock_mode == 'w'
1385
def lock_write(self, token=None):
1386
"""Lock this repository for writing.
1388
This causes caching within the repository obejct to start accumlating
1389
data during reads, and allows a 'write_group' to be obtained. Write
1390
groups must be used for actual data insertion.
1392
A token should be passed in if you know that you have locked the object
1393
some other way, and need to synchronise this object's state with that
1396
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
1398
:param token: if this is already locked, then lock_write will fail
1399
unless the token matches the existing lock.
1400
:returns: a token if this instance supports tokens, otherwise None.
1401
:raises TokenLockingNotSupported: when a token is given but this
1402
instance doesn't support using token locks.
1403
:raises MismatchedToken: if the specified token doesn't match the token
1404
of the existing lock.
1405
:seealso: start_write_group.
1406
:return: A RepositoryWriteLockResult.
1408
locked = self.is_locked()
1409
token = self.control_files.lock_write(token=token)
1411
self._warn_if_deprecated()
1412
self._note_lock('w')
1413
for repo in self._fallback_repositories:
1414
# Writes don't affect fallback repos
1416
self._refresh_data()
1417
return RepositoryWriteLockResult(self.unlock, token)
236
def lock_write(self):
237
self.control_files.lock_write()
1419
239
def lock_read(self):
1420
"""Lock the repository for read operations.
1422
:return: An object with an unlock method which will release the lock
1425
locked = self.is_locked()
1426
240
self.control_files.lock_read()
1428
self._warn_if_deprecated()
1429
self._note_lock('r')
1430
for repo in self._fallback_repositories:
1432
self._refresh_data()
1435
242
def get_physical_lock_status(self):
1436
243
return self.control_files.get_physical_lock_status()
1438
def leave_lock_in_place(self):
1439
"""Tell this repository not to release the physical lock when this
1442
If lock_write doesn't return a token, then this method is not supported.
1444
self.control_files.leave_in_place()
1446
def dont_leave_lock_in_place(self):
1447
"""Tell this repository to release the physical lock when this
1448
object is unlocked, even if it didn't originally acquire it.
1450
If lock_write doesn't return a token, then this method is not supported.
1452
self.control_files.dont_leave_in_place()
1454
245
@needs_read_lock
1455
246
def gather_stats(self, revid=None, committers=None):
1456
247
"""Gather statistics from a revision id.
1742
342
:param revprops: Optional dictionary of revision properties.
1743
343
:param revision_id: Optional revision id.
1745
if self._fallback_repositories:
1746
raise errors.BzrError("Cannot commit from a lightweight checkout "
1747
"to a stacked branch. See "
1748
"https://bugs.launchpad.net/bzr/+bug/375013 for details.")
1749
result = self._commit_builder_class(self, parents, config,
1750
timestamp, timezone, committer, revprops, revision_id)
1751
self.start_write_group()
345
return _CommitBuilder(self, parents, config, timestamp, timezone,
346
committer, revprops, revision_id)
1754
@only_raises(errors.LockNotHeld, errors.LockBroken)
1755
348
def unlock(self):
1756
if (self.control_files._lock_count == 1 and
1757
self.control_files._lock_mode == 'w'):
1758
if self._write_group is not None:
1759
self.abort_write_group()
1760
self.control_files.unlock()
1761
raise errors.BzrError(
1762
'Must end write groups before releasing write locks.')
1763
349
self.control_files.unlock()
1764
if self.control_files._lock_count == 0:
1765
self._inventory_entry_cache.clear()
1766
for repo in self._fallback_repositories:
1769
351
@needs_read_lock
1770
def clone(self, a_bzrdir, revision_id=None):
352
def clone(self, a_bzrdir, revision_id=None, basis=None):
1771
353
"""Clone this repository into a_bzrdir using the current format.
1773
355
Currently no check is made that the format of this repository and
1774
356
the bzrdir format are compatible. FIXME RBC 20060201.
1776
:return: The newly created destination repository.
1778
# TODO: deprecate after 0.16; cloning this with all its settings is
1779
# probably not very useful -- mbp 20070423
1780
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
1781
self.copy_content_into(dest_repo, revision_id)
1784
def start_write_group(self):
1785
"""Start a write group in the repository.
1787
Write groups are used by repositories which do not have a 1:1 mapping
1788
between file ids and backend store to manage the insertion of data from
1789
both fetch and commit operations.
1791
A write lock is required around the start_write_group/commit_write_group
1792
for the support of lock-requiring repository formats.
1794
One can only insert data into a repository inside a write group.
1798
if not self.is_write_locked():
1799
raise errors.NotWriteLocked(self)
1800
if self._write_group:
1801
raise errors.BzrError('already in a write group')
1802
self._start_write_group()
1803
# so we can detect unlock/relock - the write group is now entered.
1804
self._write_group = self.get_transaction()
1806
def _start_write_group(self):
1807
"""Template method for per-repository write group startup.
1809
This is called before the write group is considered to be
1814
def sprout(self, to_bzrdir, revision_id=None):
1815
"""Create a descendent repository for new development.
1817
Unlike clone, this does not copy the settings of the repository.
1819
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1820
dest_repo.fetch(self, revision_id=revision_id)
1823
def _create_sprouting_repo(self, a_bzrdir, shared):
1824
358
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1825
359
# use target default format.
1826
dest_repo = a_bzrdir.create_repository()
360
result = a_bzrdir.create_repository()
361
# FIXME RBC 20060209 split out the repository type to avoid this check ?
362
elif isinstance(a_bzrdir._format,
363
(bzrdir.BzrDirFormat4,
364
bzrdir.BzrDirFormat5,
365
bzrdir.BzrDirFormat6)):
366
result = a_bzrdir.open_repository()
1828
# Most control formats need the repository to be specifically
1829
# created, but on some old all-in-one formats it's not needed
1831
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1832
except errors.UninitializableFormat:
1833
dest_repo = a_bzrdir.open_repository()
1836
def _get_sink(self):
1837
"""Return a sink for streaming into this repository."""
1838
return StreamSink(self)
1840
def _get_source(self, to_format):
1841
"""Return a source for streaming from this repository."""
1842
return StreamSource(self, to_format)
368
result = self._format.initialize(a_bzrdir, shared=self.is_shared())
369
self.copy_content_into(result, revision_id, basis)
1844
372
@needs_read_lock
1845
373
def has_revision(self, revision_id):
1846
374
"""True if this repository has a copy of the revision."""
1847
return revision_id in self.has_revisions((revision_id,))
1850
def has_revisions(self, revision_ids):
1851
"""Probe to find out the presence of multiple revisions.
1853
:param revision_ids: An iterable of revision_ids.
1854
:return: A set of the revision_ids that were present.
1856
parent_map = self.revisions.get_parent_map(
1857
[(rev_id,) for rev_id in revision_ids])
1859
if _mod_revision.NULL_REVISION in revision_ids:
1860
result.add(_mod_revision.NULL_REVISION)
1861
result.update([key[0] for key in parent_map])
1865
def get_revision(self, revision_id):
1866
"""Return the Revision object for a named revision."""
1867
return self.get_revisions([revision_id])[0]
375
return self._revision_store.has_revision_id(revision_id,
376
self.get_transaction())
1869
378
@needs_read_lock
1870
379
def get_revision_reconcile(self, revision_id):
1871
380
"""'reconcile' helper routine that allows access to a revision always.
1873
382
This variant of get_revision does not cross check the weave graph
1874
383
against the revision one as get_revision does: but it should only
1875
384
be used by reconcile, or reconcile-alike commands that are correcting
1876
385
or testing the revision graph.
1878
return self._get_revisions([revision_id])[0]
387
if not revision_id or not isinstance(revision_id, basestring):
388
raise errors.InvalidRevisionId(revision_id=revision_id,
390
return self._revision_store.get_revisions([revision_id],
391
self.get_transaction())[0]
1880
392
@needs_read_lock
1881
393
def get_revisions(self, revision_ids):
1882
"""Get many revisions at once.
1884
Repositories that need to check data on every revision read should
1885
subclass this method.
1887
return self._get_revisions(revision_ids)
1890
def _get_revisions(self, revision_ids):
1891
"""Core work logic to get many revisions without sanity checks."""
1893
for revid, rev in self._iter_revisions(revision_ids):
1895
raise errors.NoSuchRevision(self, revid)
1897
return [revs[revid] for revid in revision_ids]
1899
def _iter_revisions(self, revision_ids):
1900
"""Iterate over revision objects.
1902
:param revision_ids: An iterable of revisions to examine. None may be
1903
passed to request all revisions known to the repository. Note that
1904
not all repositories can find unreferenced revisions; for those
1905
repositories only referenced ones will be returned.
1906
:return: An iterator of (revid, revision) tuples. Absent revisions (
1907
those asked for but not available) are returned as (revid, None).
1909
if revision_ids is None:
1910
revision_ids = self.all_revision_ids()
1912
for rev_id in revision_ids:
1913
if not rev_id or not isinstance(rev_id, basestring):
1914
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1915
keys = [(key,) for key in revision_ids]
1916
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1917
for record in stream:
1918
revid = record.key[0]
1919
if record.storage_kind == 'absent':
1922
text = record.get_bytes_as('fulltext')
1923
rev = self._serializer.read_revision_from_string(text)
1926
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
394
return self._revision_store.get_revisions(revision_ids,
395
self.get_transaction())
398
def get_revision_xml(self, revision_id):
399
rev = self.get_revision(revision_id)
401
# the current serializer..
402
self._revision_store._serializer.write_revision(rev, rev_tmp)
404
return rev_tmp.getvalue()
407
def get_revision(self, revision_id):
408
"""Return the Revision object for a named revision"""
409
r = self.get_revision_reconcile(revision_id)
410
# weave corruption can lead to absent revision markers that should be
412
# the following test is reasonably cheap (it needs a single weave read)
413
# and the weave is cached in read transactions. In write transactions
414
# it is not cached but typically we only read a small number of
415
# revisions. For knits when they are introduced we will probably want
416
# to ensure that caching write transactions are in use.
417
inv = self.get_inventory_weave()
418
self._check_revision_parents(r, inv)
422
def get_deltas_for_revisions(self, revisions):
1927
423
"""Produce a generator of revision deltas.
1929
425
Note that the input is a sequence of REVISIONS, not revision_ids.
1930
426
Trees will be held in memory until the generator exits.
1931
427
Each delta is relative to the revision's lefthand predecessor.
1933
:param specific_fileids: if not None, the result is filtered
1934
so that only those file-ids, their parents and their
1935
children are included.
1937
# Get the revision-ids of interest
1938
429
required_trees = set()
1939
430
for revision in revisions:
1940
431
required_trees.add(revision.revision_id)
1941
432
required_trees.update(revision.parent_ids[:1])
1943
# Get the matching filtered trees. Note that it's more
1944
# efficient to pass filtered trees to changes_from() rather
1945
# than doing the filtering afterwards. changes_from() could
1946
# arguably do the filtering itself but it's path-based, not
1947
# file-id based, so filtering before or afterwards is
1949
if specific_fileids is None:
1950
trees = dict((t.get_revision_id(), t) for
1951
t in self.revision_trees(required_trees))
1953
trees = dict((t.get_revision_id(), t) for
1954
t in self._filtered_revision_trees(required_trees,
1957
# Calculate the deltas
433
trees = dict((t.get_revision_id(), t) for
434
t in self.revision_trees(required_trees))
1958
435
for revision in revisions:
1959
436
if not revision.parent_ids:
1960
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
437
old_tree = self.revision_tree(None)
1962
439
old_tree = trees[revision.parent_ids[0]]
1963
440
yield trees[revision.revision_id].changes_from(old_tree)
1965
442
@needs_read_lock
1966
def get_revision_delta(self, revision_id, specific_fileids=None):
443
def get_revision_delta(self, revision_id):
1967
444
"""Return the delta for one revision.
1969
446
The delta is relative to the left-hand predecessor of the
1972
:param specific_fileids: if not None, the result is filtered
1973
so that only those file-ids, their parents and their
1974
children are included.
1976
449
r = self.get_revision(revision_id)
1977
return list(self.get_deltas_for_revisions([r],
1978
specific_fileids=specific_fileids))[0]
450
return list(self.get_deltas_for_revisions([r]))[0]
452
def _check_revision_parents(self, revision, inventory):
453
"""Private to Repository and Fetch.
455
This checks the parentage of revision in an inventory weave for
456
consistency and is only applicable to inventory-weave-for-ancestry
457
using repository formats & fetchers.
459
weave_parents = inventory.get_parents(revision.revision_id)
460
weave_names = inventory.versions()
461
for parent_id in revision.parent_ids:
462
if parent_id in weave_names:
463
# this parent must not be a ghost.
464
if not parent_id in weave_parents:
466
raise errors.CorruptRepository(self)
1980
468
@needs_write_lock
1981
469
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1982
470
signature = gpg_strategy.sign(plaintext)
1983
self.add_signature_text(revision_id, signature)
1986
def add_signature_text(self, revision_id, signature):
1987
self.signatures.add_lines((revision_id,), (),
1988
osutils.split_lines(signature))
1990
def find_text_key_references(self):
1991
"""Find the text key references within the repository.
1993
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1994
to whether they were referred to by the inventory of the
1995
revision_id that they contain. The inventory texts from all present
1996
revision ids are assessed to generate this report.
1998
revision_keys = self.revisions.keys()
1999
w = self.inventories
2000
pb = ui.ui_factory.nested_progress_bar()
2002
return self._find_text_key_references_from_xml_inventory_lines(
2003
w.iter_lines_added_or_present_in_keys(revision_keys, pb=pb))
2007
def _find_text_key_references_from_xml_inventory_lines(self,
2009
"""Core routine for extracting references to texts from inventories.
2011
This performs the translation of xml lines to revision ids.
2013
:param line_iterator: An iterator of lines, origin_version_id
2014
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
2015
to whether they were referred to by the inventory of the
2016
revision_id that they contain. Note that if that revision_id was
2017
not part of the line_iterator's output then False will be given -
2018
even though it may actually refer to that key.
2020
if not self._serializer.support_altered_by_hack:
2021
raise AssertionError(
2022
"_find_text_key_references_from_xml_inventory_lines only "
2023
"supported for branches which store inventory as unnested xml"
2024
", not on %r" % self)
471
self._revision_store.add_revision_signature_text(revision_id,
473
self.get_transaction())
475
def fileids_altered_by_revision_ids(self, revision_ids):
476
"""Find the file ids and versions affected by revisions.
478
:param revisions: an iterable containing revision ids.
479
:return: a dictionary mapping altered file-ids to an iterable of
480
revision_ids. Each altered file-ids has the exact revision_ids that
481
altered it listed explicitly.
483
assert self._serializer.support_altered_by_hack, \
484
("fileids_altered_by_revision_ids only supported for branches "
485
"which store inventory as unnested xml, not on %r" % self)
486
selected_revision_ids = set(revision_ids)
487
w = self.get_inventory_weave()
2027
490
# this code needs to read every new line in every inventory for the
2028
491
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
2029
# not present in one of those inventories is unnecessary but not
492
# not present in one of those inventories is unnecessary but not
2030
493
# harmful because we are filtering by the revision id marker in the
2031
# inventory lines : we only select file ids altered in one of those
494
# inventory lines : we only select file ids altered in one of those
2032
495
# revisions. We don't need to see all lines in the inventory because
2033
496
# only those added in an inventory in rev X can contain a revision=X
2043
506
search = self._file_ids_altered_regex.search
2044
507
unescape = _unescape_xml
2045
508
setdefault = result.setdefault
2046
for line, line_key in line_iterator:
2047
match = search(line)
2050
# One call to match.group() returning multiple items is quite a
2051
# bit faster than 2 calls to match.group() each returning 1
2052
file_id, revision_id = match.group('file_id', 'revision_id')
2054
# Inlining the cache lookups helps a lot when you make 170,000
2055
# lines and 350k ids, versus 8.4 unique ids.
2056
# Using a cache helps in 2 ways:
2057
# 1) Avoids unnecessary decoding calls
2058
# 2) Re-uses cached strings, which helps in future set and
2060
# (2) is enough that removing encoding entirely along with
2061
# the cache (so we are using plain strings) results in no
2062
# performance improvement.
2064
revision_id = unescape_revid_cache[revision_id]
2066
unescaped = unescape(revision_id)
2067
unescape_revid_cache[revision_id] = unescaped
2068
revision_id = unescaped
2070
# Note that unconditionally unescaping means that we deserialise
2071
# every fileid, which for general 'pull' is not great, but we don't
2072
# really want to have some many fulltexts that this matters anyway.
2075
file_id = unescape_fileid_cache[file_id]
2077
unescaped = unescape(file_id)
2078
unescape_fileid_cache[file_id] = unescaped
2081
key = (file_id, revision_id)
2082
setdefault(key, False)
2083
if revision_id == line_key[-1]:
2087
def _inventory_xml_lines_for_keys(self, keys):
2088
"""Get a line iterator of the sort needed for findind references.
2090
Not relevant for non-xml inventory repositories.
2092
Ghosts in revision_keys are ignored.
2094
:param revision_keys: The revision keys for the inventories to inspect.
2095
:return: An iterator over (inventory line, revid) for the fulltexts of
2096
all of the xml inventories specified by revision_keys.
2098
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2099
for record in stream:
2100
if record.storage_kind != 'absent':
2101
chunks = record.get_bytes_as('chunked')
2102
revid = record.key[-1]
2103
lines = osutils.chunks_to_lines(chunks)
2107
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
2109
"""Helper routine for fileids_altered_by_revision_ids.
2111
This performs the translation of xml lines to revision ids.
2113
:param line_iterator: An iterator of lines, origin_version_id
2114
:param revision_keys: The revision ids to filter for. This should be a
2115
set or other type which supports efficient __contains__ lookups, as
2116
the revision key from each parsed line will be looked up in the
2117
revision_keys filter.
2118
:return: a dictionary mapping altered file-ids to an iterable of
2119
revision_ids. Each altered file-ids has the exact revision_ids that
2120
altered it listed explicitly.
2122
seen = set(self._find_text_key_references_from_xml_inventory_lines(
2123
line_iterator).iterkeys())
2124
parent_keys = self._find_parent_keys_of_revisions(revision_keys)
2125
parent_seen = set(self._find_text_key_references_from_xml_inventory_lines(
2126
self._inventory_xml_lines_for_keys(parent_keys)))
2127
new_keys = seen - parent_seen
2129
setdefault = result.setdefault
2130
for key in new_keys:
2131
setdefault(key[0], set()).add(key[-1])
2134
def _find_parent_ids_of_revisions(self, revision_ids):
2135
"""Find all parent ids that are mentioned in the revision graph.
2137
:return: set of revisions that are parents of revision_ids which are
2138
not part of revision_ids themselves
2140
parent_map = self.get_parent_map(revision_ids)
2142
map(parent_ids.update, parent_map.itervalues())
2143
parent_ids.difference_update(revision_ids)
2144
parent_ids.discard(_mod_revision.NULL_REVISION)
2147
def _find_parent_keys_of_revisions(self, revision_keys):
2148
"""Similar to _find_parent_ids_of_revisions, but used with keys.
2150
:param revision_keys: An iterable of revision_keys.
2151
:return: The parents of all revision_keys that are not already in
2154
parent_map = self.revisions.get_parent_map(revision_keys)
2156
map(parent_keys.update, parent_map.itervalues())
2157
parent_keys.difference_update(revision_keys)
2158
parent_keys.discard(_mod_revision.NULL_REVISION)
2161
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
2162
"""Find the file ids and versions affected by revisions.
2164
:param revisions: an iterable containing revision ids.
2165
:param _inv_weave: The inventory weave from this repository or None.
2166
If None, the inventory weave will be opened automatically.
2167
:return: a dictionary mapping altered file-ids to an iterable of
2168
revision_ids. Each altered file-ids has the exact revision_ids that
2169
altered it listed explicitly.
2171
selected_keys = set((revid,) for revid in revision_ids)
2172
w = _inv_weave or self.inventories
2173
return self._find_file_ids_from_xml_inventory_lines(
2174
w.iter_lines_added_or_present_in_keys(
2175
selected_keys, pb=None),
2178
def iter_files_bytes(self, desired_files):
2179
"""Iterate through file versions.
2181
Files will not necessarily be returned in the order they occur in
2182
desired_files. No specific order is guaranteed.
2184
Yields pairs of identifier, bytes_iterator. identifier is an opaque
2185
value supplied by the caller as part of desired_files. It should
2186
uniquely identify the file version in the caller's context. (Examples:
2187
an index number or a TreeTransform trans_id.)
2189
bytes_iterator is an iterable of bytestrings for the file. The
2190
kind of iterable and length of the bytestrings are unspecified, but for
2191
this implementation, it is a list of bytes produced by
2192
VersionedFile.get_record_stream().
2194
:param desired_files: a list of (file_id, revision_id, identifier)
2198
for file_id, revision_id, callable_data in desired_files:
2199
text_keys[(file_id, revision_id)] = callable_data
2200
for record in self.texts.get_record_stream(text_keys, 'unordered', True):
2201
if record.storage_kind == 'absent':
2202
raise errors.RevisionNotPresent(record.key, self)
2203
yield text_keys[record.key], record.get_bytes_as('chunked')
2205
def _generate_text_key_index(self, text_key_references=None,
2207
"""Generate a new text key index for the repository.
2209
This is an expensive function that will take considerable time to run.
2211
:return: A dict mapping text keys ((file_id, revision_id) tuples) to a
2212
list of parents, also text keys. When a given key has no parents,
2213
the parents list will be [NULL_REVISION].
2215
# All revisions, to find inventory parents.
2216
if ancestors is None:
2217
graph = self.get_graph()
2218
ancestors = graph.get_parent_map(self.all_revision_ids())
2219
if text_key_references is None:
2220
text_key_references = self.find_text_key_references()
2221
509
pb = ui.ui_factory.nested_progress_bar()
2223
return self._do_generate_text_key_index(ancestors,
2224
text_key_references, pb)
511
for line in w.iter_lines_added_or_present_in_versions(
512
selected_revision_ids, pb=pb):
516
# One call to match.group() returning multiple items is quite a
517
# bit faster than 2 calls to match.group() each returning 1
518
file_id, revision_id = match.group('file_id', 'revision_id')
520
# Inlining the cache lookups helps a lot when you make 170,000
521
# lines and 350k ids, versus 8.4 unique ids.
522
# Using a cache helps in 2 ways:
523
# 1) Avoids unnecessary decoding calls
524
# 2) Re-uses cached strings, which helps in future set and
526
# (2) is enough that removing encoding entirely along with
527
# the cache (so we are using plain strings) results in no
528
# performance improvement.
530
revision_id = unescape_revid_cache[revision_id]
532
unescaped = unescape(revision_id)
533
unescape_revid_cache[revision_id] = unescaped
534
revision_id = unescaped
536
if revision_id in selected_revision_ids:
538
file_id = unescape_fileid_cache[file_id]
540
unescaped = unescape(file_id)
541
unescape_fileid_cache[file_id] = unescaped
543
setdefault(file_id, set()).add(revision_id)
2228
def _do_generate_text_key_index(self, ancestors, text_key_references, pb):
2229
"""Helper for _generate_text_key_index to avoid deep nesting."""
2230
revision_order = tsort.topo_sort(ancestors)
2231
invalid_keys = set()
2233
for revision_id in revision_order:
2234
revision_keys[revision_id] = set()
2235
text_count = len(text_key_references)
2236
# a cache of the text keys to allow reuse; costs a dict of all the
2237
# keys, but saves a 2-tuple for every child of a given key.
2239
for text_key, valid in text_key_references.iteritems():
2241
invalid_keys.add(text_key)
2243
revision_keys[text_key[1]].add(text_key)
2244
text_key_cache[text_key] = text_key
2245
del text_key_references
2247
text_graph = graph.Graph(graph.DictParentsProvider(text_index))
2248
NULL_REVISION = _mod_revision.NULL_REVISION
2249
# Set a cache with a size of 10 - this suffices for bzr.dev but may be
2250
# too small for large or very branchy trees. However, for 55K path
2251
# trees, it would be easy to use too much memory trivially. Ideally we
2252
# could gauge this by looking at available real memory etc, but this is
2253
# always a tricky proposition.
2254
inventory_cache = lru_cache.LRUCache(10)
2255
batch_size = 10 # should be ~150MB on a 55K path tree
2256
batch_count = len(revision_order) / batch_size + 1
2258
pb.update("Calculating text parents", processed_texts, text_count)
2259
for offset in xrange(batch_count):
2260
to_query = revision_order[offset * batch_size:(offset + 1) *
2264
for revision_id in to_query:
2265
parent_ids = ancestors[revision_id]
2266
for text_key in revision_keys[revision_id]:
2267
pb.update("Calculating text parents", processed_texts)
2268
processed_texts += 1
2269
candidate_parents = []
2270
for parent_id in parent_ids:
2271
parent_text_key = (text_key[0], parent_id)
2273
check_parent = parent_text_key not in \
2274
revision_keys[parent_id]
2276
# the parent parent_id is a ghost:
2277
check_parent = False
2278
# truncate the derived graph against this ghost.
2279
parent_text_key = None
2281
# look at the parent commit details inventories to
2282
# determine possible candidates in the per file graph.
2285
inv = inventory_cache[parent_id]
2287
inv = self.revision_tree(parent_id).inventory
2288
inventory_cache[parent_id] = inv
2290
parent_entry = inv[text_key[0]]
2291
except (KeyError, errors.NoSuchId):
2293
if parent_entry is not None:
2295
text_key[0], parent_entry.revision)
2297
parent_text_key = None
2298
if parent_text_key is not None:
2299
candidate_parents.append(
2300
text_key_cache[parent_text_key])
2301
parent_heads = text_graph.heads(candidate_parents)
2302
new_parents = list(parent_heads)
2303
new_parents.sort(key=lambda x:candidate_parents.index(x))
2304
if new_parents == []:
2305
new_parents = [NULL_REVISION]
2306
text_index[text_key] = new_parents
2308
for text_key in invalid_keys:
2309
text_index[text_key] = [NULL_REVISION]
2312
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
2313
"""Get an iterable listing the keys of all the data introduced by a set
2316
The keys will be ordered so that the corresponding items can be safely
2317
fetched and inserted in that order.
2319
:returns: An iterable producing tuples of (knit-kind, file-id,
2320
versions). knit-kind is one of 'file', 'inventory', 'signatures',
2321
'revisions'. file-id is None unless knit-kind is 'file'.
2323
for result in self._find_file_keys_to_fetch(revision_ids, _files_pb):
2326
for result in self._find_non_file_keys_to_fetch(revision_ids):
2329
def _find_file_keys_to_fetch(self, revision_ids, pb):
2330
# XXX: it's a bit weird to control the inventory weave caching in this
2331
# generator. Ideally the caching would be done in fetch.py I think. Or
2332
# maybe this generator should explicitly have the contract that it
2333
# should not be iterated until the previously yielded item has been
2335
inv_w = self.inventories
2337
# file ids that changed
2338
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
2340
num_file_ids = len(file_ids)
2341
for file_id, altered_versions in file_ids.iteritems():
2343
pb.update("Fetch texts", count, num_file_ids)
2345
yield ("file", file_id, altered_versions)
2347
def _find_non_file_keys_to_fetch(self, revision_ids):
2349
yield ("inventory", None, revision_ids)
2352
# XXX: Note ATM no callers actually pay attention to this return
2353
# instead they just use the list of revision ids and ignore
2354
# missing sigs. Consider removing this work entirely
2355
revisions_with_signatures = set(self.signatures.get_parent_map(
2356
[(r,) for r in revision_ids]))
2357
revisions_with_signatures = set(
2358
[r for (r,) in revisions_with_signatures])
2359
revisions_with_signatures.intersection_update(revision_ids)
2360
yield ("signatures", None, revisions_with_signatures)
2363
yield ("revisions", None, revision_ids)
549
def get_inventory_weave(self):
550
return self.control_weaves.get_weave('inventory',
551
self.get_transaction())
2365
553
@needs_read_lock
2366
554
def get_inventory(self, revision_id):
2367
"""Get Inventory object by revision id."""
2368
return self.iter_inventories([revision_id]).next()
2370
def iter_inventories(self, revision_ids, ordering=None):
2371
"""Get many inventories by revision_ids.
2373
This will buffer some or all of the texts used in constructing the
2374
inventories in memory, but will only parse a single inventory at a
2377
:param revision_ids: The expected revision ids of the inventories.
2378
:param ordering: optional ordering, e.g. 'topological'. If not
2379
specified, the order of revision_ids will be preserved (by
2380
buffering if necessary).
2381
:return: An iterator of inventories.
2383
if ((None in revision_ids)
2384
or (_mod_revision.NULL_REVISION in revision_ids)):
2385
raise ValueError('cannot get null revision inventory')
2386
return self._iter_inventories(revision_ids, ordering)
2388
def _iter_inventories(self, revision_ids, ordering):
2389
"""single-document based inventory iteration."""
2390
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2391
for text, revision_id in inv_xmls:
2392
yield self._deserialise_inventory(revision_id, text)
2394
def _iter_inventory_xmls(self, revision_ids, ordering):
2395
if ordering is None:
2396
order_as_requested = True
2397
ordering = 'unordered'
2399
order_as_requested = False
2400
keys = [(revision_id,) for revision_id in revision_ids]
2403
if order_as_requested:
2404
key_iter = iter(keys)
2405
next_key = key_iter.next()
2406
stream = self.inventories.get_record_stream(keys, ordering, True)
2408
for record in stream:
2409
if record.storage_kind != 'absent':
2410
chunks = record.get_bytes_as('chunked')
2411
if order_as_requested:
2412
text_chunks[record.key] = chunks
2414
yield ''.join(chunks), record.key[-1]
2416
raise errors.NoSuchRevision(self, record.key)
2417
if order_as_requested:
2418
# Yield as many results as we can while preserving order.
2419
while next_key in text_chunks:
2420
chunks = text_chunks.pop(next_key)
2421
yield ''.join(chunks), next_key[-1]
2423
next_key = key_iter.next()
2424
except StopIteration:
2425
# We still want to fully consume the get_record_stream,
2426
# just in case it is not actually finished at this point
2430
def _deserialise_inventory(self, revision_id, xml):
2431
"""Transform the xml into an inventory object.
555
"""Get Inventory object by hash."""
556
return self.deserialise_inventory(
557
revision_id, self.get_inventory_xml(revision_id))
559
def deserialise_inventory(self, revision_id, xml):
560
"""Transform the xml into an inventory object.
2433
562
:param revision_id: The expected revision id of the inventory.
2434
563
:param xml: A serialised inventory.
2436
result = self._serializer.read_inventory_from_string(xml, revision_id,
2437
entry_cache=self._inventory_entry_cache,
2438
return_from_cache=self._safe_to_return_from_cache)
2439
if result.revision_id != revision_id:
2440
raise AssertionError('revision id mismatch %s != %s' % (
2441
result.revision_id, revision_id))
565
result = self._serializer.read_inventory_from_string(xml)
566
result.root.revision = revision_id
2444
def get_serializer_format(self):
2445
return self._serializer.format_num
569
def serialise_inventory(self, inv):
570
return self._serializer.write_inventory_to_string(inv)
2447
572
@needs_read_lock
2448
def _get_inventory_xml(self, revision_id):
2449
"""Get serialized inventory as a string."""
2450
texts = self._iter_inventory_xmls([revision_id], 'unordered')
573
def get_inventory_xml(self, revision_id):
574
"""Get inventory XML as a file object."""
2452
text, revision_id = texts.next()
2453
except StopIteration:
576
assert isinstance(revision_id, basestring), type(revision_id)
577
iw = self.get_inventory_weave()
578
return iw.get_text(revision_id)
2454
580
raise errors.HistoryMissing(self, 'inventory', revision_id)
2457
def get_rev_id_for_revno(self, revno, known_pair):
2458
"""Return the revision id of a revno, given a later (revno, revid)
2459
pair in the same history.
2461
:return: if found (True, revid). If the available history ran out
2462
before reaching the revno, then this returns
2463
(False, (closest_revno, closest_revid)).
2465
known_revno, known_revid = known_pair
2466
partial_history = [known_revid]
2467
distance_from_known = known_revno - revno
2468
if distance_from_known < 0:
2470
'requested revno (%d) is later than given known revno (%d)'
2471
% (revno, known_revno))
2474
self, partial_history, stop_index=distance_from_known)
2475
except errors.RevisionNotPresent, err:
2476
if err.revision_id == known_revid:
2477
# The start revision (known_revid) wasn't found.
2479
# This is a stacked repository with no fallbacks, or a there's a
2480
# left-hand ghost. Either way, even though the revision named in
2481
# the error isn't in this repo, we know it's the next step in this
2482
# left-hand history.
2483
partial_history.append(err.revision_id)
2484
if len(partial_history) <= distance_from_known:
2485
# Didn't find enough history to get a revid for the revno.
2486
earliest_revno = known_revno - len(partial_history) + 1
2487
return (False, (earliest_revno, partial_history[-1]))
2488
if len(partial_history) - 1 > distance_from_known:
2489
raise AssertionError('_iter_for_revno returned too much history')
2490
return (True, partial_history[-1])
2492
def iter_reverse_revision_history(self, revision_id):
2493
"""Iterate backwards through revision ids in the lefthand history
2495
:param revision_id: The revision id to start with. All its lefthand
2496
ancestors will be traversed.
2498
graph = self.get_graph()
2499
next_id = revision_id
2501
if next_id in (None, _mod_revision.NULL_REVISION):
583
def get_inventory_sha1(self, revision_id):
584
"""Return the sha1 hash of the inventory entry
586
return self.get_revision(revision_id).inventory_sha1
589
def get_revision_graph(self, revision_id=None):
590
"""Return a dictionary containing the revision graph.
592
:param revision_id: The revision_id to get a graph from. If None, then
593
the entire revision graph is returned. This is a deprecated mode of
594
operation and will be removed in the future.
595
:return: a dictionary of revision_id->revision_parents_list.
597
# special case NULL_REVISION
598
if revision_id == _mod_revision.NULL_REVISION:
600
a_weave = self.get_inventory_weave()
601
all_revisions = self._eliminate_revisions_not_present(
603
entire_graph = dict([(node, a_weave.get_parents(node)) for
604
node in all_revisions])
605
if revision_id is None:
607
elif revision_id not in entire_graph:
608
raise errors.NoSuchRevision(self, revision_id)
610
# add what can be reached from revision_id
612
pending = set([revision_id])
613
while len(pending) > 0:
615
result[node] = entire_graph[node]
616
for revision_id in result[node]:
617
if revision_id not in result:
618
pending.add(revision_id)
622
def get_revision_graph_with_ghosts(self, revision_ids=None):
623
"""Return a graph of the revisions with ghosts marked as applicable.
625
:param revision_ids: an iterable of revisions to graph or None for all.
626
:return: a Graph object with the graph reachable from revision_ids.
628
result = graph.Graph()
630
pending = set(self.all_revision_ids())
633
pending = set(revision_ids)
634
# special case NULL_REVISION
635
if _mod_revision.NULL_REVISION in pending:
636
pending.remove(_mod_revision.NULL_REVISION)
637
required = set(pending)
640
revision_id = pending.pop()
2504
parents = graph.get_parent_map([next_id])[next_id]
2506
raise errors.RevisionNotPresent(next_id, self)
2508
if len(parents) == 0:
2511
next_id = parents[0]
642
rev = self.get_revision(revision_id)
643
except errors.NoSuchRevision:
644
if revision_id in required:
647
result.add_ghost(revision_id)
649
for parent_id in rev.parent_ids:
650
# is this queued or done ?
651
if (parent_id not in pending and
652
parent_id not in done):
654
pending.add(parent_id)
655
result.add_node(revision_id, rev.parent_ids)
656
done.add(revision_id)
660
def get_revision_inventory(self, revision_id):
661
"""Return inventory of a past revision."""
662
# TODO: Unify this with get_inventory()
663
# bzr 0.0.6 and later imposes the constraint that the inventory_id
664
# must be the same as its revision, so this is trivial.
665
if revision_id is None:
666
# This does not make sense: if there is no revision,
667
# then it is the current tree inventory surely ?!
668
# and thus get_root_id() is something that looks at the last
669
# commit on the branch, and the get_root_id is an inventory check.
670
raise NotImplementedError
671
# return Inventory(self.get_root_id())
673
return self.get_inventory(revision_id)
2513
676
def is_shared(self):
2514
677
"""Return True if this repository is flagged as a shared repository."""
2515
678
raise NotImplementedError(self.is_shared)
2521
684
reconciler = RepoReconciler(self, thorough=thorough)
2522
685
reconciler.reconcile()
2523
686
return reconciler
2525
def _refresh_data(self):
2526
"""Helper called from lock_* to ensure coherency with disk.
2528
The default implementation does nothing; it is however possible
2529
for repositories to maintain loaded indices across multiple locks
2530
by checking inside their implementation of this method to see
2531
whether their indices are still valid. This depends of course on
2532
the disk format being validatable in this manner. This method is
2533
also called by the refresh_data() public interface to cause a refresh
2534
to occur while in a write lock so that data inserted by a smart server
2535
push operation is visible on the client's instance of the physical
2539
688
@needs_read_lock
2540
689
def revision_tree(self, revision_id):
2541
690
"""Return Tree for a revision on this branch.
2543
`revision_id` may be NULL_REVISION for the empty tree revision.
692
`revision_id` may be None for the empty tree revision.
2545
revision_id = _mod_revision.ensure_null(revision_id)
2546
694
# TODO: refactor this to use an existing revision object
2547
695
# so we don't need to read it in twice.
2548
if revision_id == _mod_revision.NULL_REVISION:
2549
return RevisionTree(self, Inventory(root_id=None),
696
if revision_id is None or revision_id == _mod_revision.NULL_REVISION:
697
return RevisionTree(self, Inventory(root_id=None),
2550
698
_mod_revision.NULL_REVISION)
2552
inv = self.get_inventory(revision_id)
700
inv = self.get_revision_inventory(revision_id)
2553
701
return RevisionTree(self, inv, revision_id)
2555
704
def revision_trees(self, revision_ids):
2556
"""Return Trees for revisions in this repository.
2558
:param revision_ids: a sequence of revision-ids;
2559
a revision-id may not be None or 'null:'
2561
inventories = self.iter_inventories(revision_ids)
2562
for inv in inventories:
2563
yield RevisionTree(self, inv, inv.revision_id)
2565
def _filtered_revision_trees(self, revision_ids, file_ids):
2566
"""Return Tree for a revision on this branch with only some files.
2568
:param revision_ids: a sequence of revision-ids;
2569
a revision-id may not be None or 'null:'
2570
:param file_ids: if not None, the result is filtered
2571
so that only those file-ids, their parents and their
2572
children are included.
2574
inventories = self.iter_inventories(revision_ids)
2575
for inv in inventories:
2576
# Should we introduce a FilteredRevisionTree class rather
2577
# than pre-filter the inventory here?
2578
filtered_inv = inv.filter(file_ids)
2579
yield RevisionTree(self, filtered_inv, filtered_inv.revision_id)
705
"""Return Tree for a revision on this branch.
707
`revision_id` may not be None or 'null:'"""
708
assert None not in revision_ids
709
assert _mod_revision.NULL_REVISION not in revision_ids
710
texts = self.get_inventory_weave().get_texts(revision_ids)
711
for text, revision_id in zip(texts, revision_ids):
712
inv = self.deserialise_inventory(revision_id, text)
713
yield RevisionTree(self, inv, revision_id)
2581
715
@needs_read_lock
2582
def get_ancestry(self, revision_id, topo_sorted=True):
716
def get_ancestry(self, revision_id):
2583
717
"""Return a list of revision-ids integrated by a revision.
2585
The first element of the list is always None, indicating the origin
2586
revision. This might change when we have history horizons, or
719
The first element of the list is always None, indicating the origin
720
revision. This might change when we have history horizons, or
2587
721
perhaps we should have a new API.
2589
723
This is topologically sorted.
2591
if _mod_revision.is_null(revision_id):
725
if revision_id is None:
2593
727
if not self.has_revision(revision_id):
2594
728
raise errors.NoSuchRevision(self, revision_id)
2595
graph = self.get_graph()
2597
search = graph._make_breadth_first_searcher([revision_id])
2600
found, ghosts = search.next_with_ghosts()
2601
except StopIteration:
2604
if _mod_revision.NULL_REVISION in keys:
2605
keys.remove(_mod_revision.NULL_REVISION)
2607
parent_map = graph.get_parent_map(keys)
2608
keys = tsort.topo_sort(parent_map)
2609
return [None] + list(keys)
2611
def pack(self, hint=None, clean_obsolete_packs=False):
2612
"""Compress the data within the repository.
2614
This operation only makes sense for some repository types. For other
2615
types it should be a no-op that just returns.
2617
This stub method does not require a lock, but subclasses should use
2618
@needs_write_lock as this is a long running call its reasonable to
2619
implicitly lock for the user.
2621
:param hint: If not supplied, the whole repository is packed.
2622
If supplied, the repository may use the hint parameter as a
2623
hint for the parts of the repository to pack. A hint can be
2624
obtained from the result of commit_write_group(). Out of
2625
date hints are simply ignored, because concurrent operations
2626
can obsolete them rapidly.
2628
:param clean_obsolete_packs: Clean obsolete packs immediately after
729
w = self.get_inventory_weave()
730
candidates = w.get_ancestry(revision_id)
731
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
734
def print_file(self, file, revision_id):
735
"""Print `file` to stdout.
737
FIXME RBC 20060125 as John Meinel points out this is a bad api
738
- it writes to stdout, it assumes that that is valid etc. Fix
739
by creating a new more flexible convenience function.
741
tree = self.revision_tree(revision_id)
742
# use inventory as it was in that revision
743
file_id = tree.inventory.path2id(file)
745
# TODO: jam 20060427 Write a test for this code path
746
# it had a bug in it, and was raising the wrong
748
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
749
tree.print_file(file_id)
2632
751
def get_transaction(self):
2633
752
return self.control_files.get_transaction()
2635
def get_parent_map(self, revision_ids):
2636
"""See graph.StackedParentsProvider.get_parent_map"""
2637
# revisions index works in keys; this just works in revisions
2638
# therefore wrap and unwrap
2641
for revision_id in revision_ids:
2642
if revision_id == _mod_revision.NULL_REVISION:
2643
result[revision_id] = ()
2644
elif revision_id is None:
2645
raise ValueError('get_parent_map(None) is not valid')
2647
query_keys.append((revision_id ,))
2648
for ((revision_id,), parent_keys) in \
2649
self.revisions.get_parent_map(query_keys).iteritems():
2651
result[revision_id] = tuple([parent_revid
2652
for (parent_revid,) in parent_keys])
2654
result[revision_id] = (_mod_revision.NULL_REVISION,)
2657
def _make_parents_provider(self):
2661
def get_known_graph_ancestry(self, revision_ids):
2662
"""Return the known graph for a set of revision ids and their ancestors.
2664
st = static_tuple.StaticTuple
2665
revision_keys = [st(r_id).intern() for r_id in revision_ids]
2666
known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
2667
return graph.GraphThunkIdsToKeys(known_graph)
2669
def get_graph(self, other_repository=None):
2670
"""Return the graph walker for this repository format"""
2671
parents_provider = self._make_parents_provider()
2672
if (other_repository is not None and
2673
not self.has_same_location(other_repository)):
2674
parents_provider = graph.StackedParentsProvider(
2675
[parents_provider, other_repository._make_parents_provider()])
2676
return graph.Graph(parents_provider)
2678
def _get_versioned_file_checker(self, text_key_references=None,
2680
"""Return an object suitable for checking versioned files.
2682
:param text_key_references: if non-None, an already built
2683
dictionary mapping text keys ((fileid, revision_id) tuples)
2684
to whether they were referred to by the inventory of the
2685
revision_id that they contain. If None, this will be
2687
:param ancestors: Optional result from
2688
self.get_graph().get_parent_map(self.all_revision_ids()) if already
2691
return _VersionedFileChecker(self,
2692
text_key_references=text_key_references, ancestors=ancestors)
2694
def revision_ids_to_search_result(self, result_set):
2695
"""Convert a set of revision ids to a graph SearchResult."""
2696
result_parents = set()
2697
for parents in self.get_graph().get_parent_map(
2698
result_set).itervalues():
2699
result_parents.update(parents)
2700
included_keys = result_set.intersection(result_parents)
2701
start_keys = result_set.difference(included_keys)
2702
exclude_keys = result_parents.difference(result_set)
2703
result = graph.SearchResult(start_keys, exclude_keys,
2704
len(result_set), result_set)
754
def revision_parents(self, revid):
755
return self.get_inventory_weave().parent_names(revid)
2707
757
@needs_write_lock
2708
758
def set_make_working_trees(self, new_value):
2968
self._transport.delete('no-working-trees')
972
self.control_files._transport.delete('no-working-trees')
2969
973
except errors.NoSuchFile:
2972
self._transport.put_bytes('no-working-trees', '',
2973
mode=self.bzrdir._get_file_mode())
976
self.control_files.put_utf8('no-working-trees', '')
2975
978
def make_working_trees(self):
2976
979
"""Returns the policy for making working trees on new branches."""
2977
return not self._transport.has('no-working-trees')
2980
class MetaDirVersionedFileRepository(MetaDirRepository):
2981
"""Repositories in a meta-dir, that work via versioned file objects."""
2983
def __init__(self, _format, a_bzrdir, control_files):
2984
super(MetaDirVersionedFileRepository, self).__init__(_format, a_bzrdir,
2988
network_format_registry = registry.FormatRegistry()
2989
"""Registry of formats indexed by their network name.
2991
The network name for a repository format is an identifier that can be used when
2992
referring to formats with smart server operations. See
2993
RepositoryFormat.network_name() for more detail.
2997
format_registry = registry.FormatRegistry(network_format_registry)
2998
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
3000
This can contain either format instances themselves, or classes/factories that
3001
can be called to obtain one.
3005
#####################################################################
3006
# Repository Formats
980
return not self.control_files._transport.has('no-working-trees')
983
class WeaveMetaDirRepository(MetaDirRepository):
984
"""A subclass of MetaDirRepository to set weave specific policy."""
986
def get_commit_builder(self, branch, parents, config, timestamp=None,
987
timezone=None, committer=None, revprops=None,
989
self._check_ascii_revisionid(revision_id, self.get_commit_builder)
990
return MetaDirRepository.get_commit_builder(self, branch, parents,
991
config, timestamp, timezone, committer, revprops, revision_id)
994
class KnitRepository(MetaDirRepository):
995
"""Knit format repository."""
997
def _warn_if_deprecated(self):
998
# This class isn't deprecated
1001
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
1002
inv_vf.add_lines_with_ghosts(revid, parents, lines)
1005
def _all_revision_ids(self):
1006
"""See Repository.all_revision_ids()."""
1007
# Knits get the revision graph from the index of the revision knit, so
1008
# it's always possible even if they're on an unlistable transport.
1009
return self._revision_store.all_revision_ids(self.get_transaction())
1011
def fileid_involved_between_revs(self, from_revid, to_revid):
1012
"""Find file_id(s) which are involved in the changes between revisions.
1014
This determines the set of revisions which are involved, and then
1015
finds all file ids affected by those revisions.
1017
vf = self._get_revision_vf()
1018
from_set = set(vf.get_ancestry(from_revid))
1019
to_set = set(vf.get_ancestry(to_revid))
1020
changed = to_set.difference(from_set)
1021
return self._fileid_involved_by_set(changed)
1023
def fileid_involved(self, last_revid=None):
1024
"""Find all file_ids modified in the ancestry of last_revid.
1026
:param last_revid: If None, last_revision() will be used.
1029
changed = set(self.all_revision_ids())
1031
changed = set(self.get_ancestry(last_revid))
1033
changed.remove(None)
1034
return self._fileid_involved_by_set(changed)
1037
def get_ancestry(self, revision_id):
1038
"""Return a list of revision-ids integrated by a revision.
1040
This is topologically sorted.
1042
if revision_id is None:
1044
vf = self._get_revision_vf()
1046
return [None] + vf.get_ancestry(revision_id)
1047
except errors.RevisionNotPresent:
1048
raise errors.NoSuchRevision(self, revision_id)
1051
def get_revision(self, revision_id):
1052
"""Return the Revision object for a named revision"""
1053
return self.get_revision_reconcile(revision_id)
1056
def get_revision_graph(self, revision_id=None):
1057
"""Return a dictionary containing the revision graph.
1059
:param revision_id: The revision_id to get a graph from. If None, then
1060
the entire revision graph is returned. This is a deprecated mode of
1061
operation and will be removed in the future.
1062
:return: a dictionary of revision_id->revision_parents_list.
1064
# special case NULL_REVISION
1065
if revision_id == _mod_revision.NULL_REVISION:
1067
a_weave = self._get_revision_vf()
1068
entire_graph = a_weave.get_graph()
1069
if revision_id is None:
1070
return a_weave.get_graph()
1071
elif revision_id not in a_weave:
1072
raise errors.NoSuchRevision(self, revision_id)
1074
# add what can be reached from revision_id
1076
pending = set([revision_id])
1077
while len(pending) > 0:
1078
node = pending.pop()
1079
result[node] = a_weave.get_parents(node)
1080
for revision_id in result[node]:
1081
if revision_id not in result:
1082
pending.add(revision_id)
1086
def get_revision_graph_with_ghosts(self, revision_ids=None):
1087
"""Return a graph of the revisions with ghosts marked as applicable.
1089
:param revision_ids: an iterable of revisions to graph or None for all.
1090
:return: a Graph object with the graph reachable from revision_ids.
1092
result = graph.Graph()
1093
vf = self._get_revision_vf()
1094
versions = set(vf.versions())
1095
if not revision_ids:
1096
pending = set(self.all_revision_ids())
1099
pending = set(revision_ids)
1100
# special case NULL_REVISION
1101
if _mod_revision.NULL_REVISION in pending:
1102
pending.remove(_mod_revision.NULL_REVISION)
1103
required = set(pending)
1106
revision_id = pending.pop()
1107
if not revision_id in versions:
1108
if revision_id in required:
1109
raise errors.NoSuchRevision(self, revision_id)
1111
result.add_ghost(revision_id)
1112
# mark it as done so we don't try for it again.
1113
done.add(revision_id)
1115
parent_ids = vf.get_parents_with_ghosts(revision_id)
1116
for parent_id in parent_ids:
1117
# is this queued or done ?
1118
if (parent_id not in pending and
1119
parent_id not in done):
1121
pending.add(parent_id)
1122
result.add_node(revision_id, parent_ids)
1123
done.add(revision_id)
1126
def _get_revision_vf(self):
1127
""":return: a versioned file containing the revisions."""
1128
vf = self._revision_store.get_revision_file(self.get_transaction())
1132
def reconcile(self, other=None, thorough=False):
1133
"""Reconcile this repository."""
1134
from bzrlib.reconcile import KnitReconciler
1135
reconciler = KnitReconciler(self, thorough=thorough)
1136
reconciler.reconcile()
1139
def revision_parents(self, revision_id):
1140
return self._get_revision_vf().get_parents(revision_id)
1143
class KnitRepository2(KnitRepository):
1145
def __init__(self, _format, a_bzrdir, control_files, _revision_store,
1146
control_store, text_store):
1147
KnitRepository.__init__(self, _format, a_bzrdir, control_files,
1148
_revision_store, control_store, text_store)
1149
self._serializer = xml6.serializer_v6
1151
def deserialise_inventory(self, revision_id, xml):
1152
"""Transform the xml into an inventory object.
1154
:param revision_id: The expected revision id of the inventory.
1155
:param xml: A serialised inventory.
1157
result = self._serializer.read_inventory_from_string(xml)
1158
assert result.root.revision is not None
1161
def serialise_inventory(self, inv):
1162
"""Transform the inventory object into XML text.
1164
:param revision_id: The expected revision id of the inventory.
1165
:param xml: A serialised inventory.
1167
assert inv.revision_id is not None
1168
assert inv.root.revision is not None
1169
return KnitRepository.serialise_inventory(self, inv)
1171
def get_commit_builder(self, branch, parents, config, timestamp=None,
1172
timezone=None, committer=None, revprops=None,
1174
"""Obtain a CommitBuilder for this repository.
1176
:param branch: Branch to commit to.
1177
:param parents: Revision ids of the parents of the new revision.
1178
:param config: Configuration to use.
1179
:param timestamp: Optional timestamp recorded for commit.
1180
:param timezone: Optional timezone for timestamp.
1181
:param committer: Optional committer to set for commit.
1182
:param revprops: Optional dictionary of revision properties.
1183
:param revision_id: Optional revision id.
1185
return RootCommitBuilder(self, parents, config, timestamp, timezone,
1186
committer, revprops, revision_id)
1189
class RepositoryFormatRegistry(registry.Registry):
1190
"""Registry of RepositoryFormats.
1194
format_registry = RepositoryFormatRegistry()
1195
"""Registry of formats, indexed by their identifying format string."""
3008
1198
class RepositoryFormat(object):
3009
1199
"""A repository format.
3011
Formats provide four things:
1201
Formats provide three things:
3012
1202
* An initialization routine to construct repository data on disk.
3013
* a optional format string which is used when the BzrDir supports
1203
* a format string which is used when the BzrDir supports versioned
3015
1205
* an open routine which returns a Repository instance.
3016
* A network name for referring to the format in smart server RPC
3019
There is one and only one Format subclass for each on-disk format. But
3020
there can be one Repository subclass that is used for several different
3021
formats. The _format attribute on a Repository instance can be used to
3022
determine the disk format.
3024
Formats are placed in a registry by their format string for reference
3025
during opening. These should be subclasses of RepositoryFormat for
1207
Formats are placed in an dict by their format string for reference
1208
during opening. These should be subclasses of RepositoryFormat
3028
1211
Once a format is deprecated, just deprecate the initialize and open
3029
methods on the format class. Do not deprecate the object, as the
3030
object may be created even when a repository instance hasn't been
1212
methods on the format class. Do not deprecate the object, as the
1213
object will be created every system load.
3033
1215
Common instance attributes:
3034
1216
_matchingbzrdir - the bzrdir format that the repository format was
3035
1217
originally written to work with. This can be used if manually
3036
1218
constructing a bzrdir and repository, or more commonly for test suite
3040
# Set to True or False in derived classes. True indicates that the format
3041
# supports ghosts gracefully.
3042
supports_ghosts = None
3043
# Can this repository be given external locations to lookup additional
3044
# data. Set to True or False in derived classes.
3045
supports_external_lookups = None
3046
# Does this format support CHK bytestring lookups. Set to True or False in
3048
supports_chks = None
3049
# Should commit add an inventory, or an inventory delta to the repository.
3050
_commit_inv_deltas = True
3051
# What order should fetch operations request streams in?
3052
# The default is unordered as that is the cheapest for an origin to
3054
_fetch_order = 'unordered'
3055
# Does this repository format use deltas that can be fetched as-deltas ?
3056
# (E.g. knits, where the knit deltas can be transplanted intact.
3057
# We default to False, which will ensure that enough data to get
3058
# a full text out of any fetch stream will be grabbed.
3059
_fetch_uses_deltas = False
3060
# Should fetch trigger a reconcile after the fetch? Only needed for
3061
# some repository formats that can suffer internal inconsistencies.
3062
_fetch_reconcile = False
3063
# Does this format have < O(tree_size) delta generation. Used to hint what
3064
# code path for commit, amongst other things.
3066
# Does doing a pack operation compress data? Useful for the pack UI command
3067
# (so if there is one pack, the operation can still proceed because it may
3068
# help), and for fetching when data won't have come from the same
3070
pack_compresses = False
3071
# Does the repository inventory storage understand references to trees?
3072
supports_tree_reference = None
3073
# Is the format experimental ?
3074
experimental = False
3077
return "%s()" % self.__class__.__name__
3079
def __eq__(self, other):
3080
# format objects are generally stateless
3081
return isinstance(other, self.__class__)
3083
def __ne__(self, other):
3084
return not self == other
1223
return "<%s>" % self.__class__.__name__
3087
1226
def find_format(klass, a_bzrdir):
3088
1227
"""Return the format for the repository object in a_bzrdir.
3090
1229
This is used by bzr native formats that have a "format" file in
3091
the repository. Other methods may be used by different types of
1230
the repository. Other methods may be used by different types of
3092
1231
control directory.
3095
1234
transport = a_bzrdir.get_repository_transport(None)
3096
format_string = transport.get_bytes("format")
1235
format_string = transport.get("format").read()
3097
1236
return format_registry.get(format_string)
3098
1237
except errors.NoSuchFile:
3099
1238
raise errors.NoRepositoryPresent(a_bzrdir)
3100
1239
except KeyError:
3101
raise errors.UnknownFormatError(format=format_string,
1240
raise errors.UnknownFormatError(format=format_string)
3105
1243
def register_format(klass, format):
3155
1320
:param a_bzrdir: The bzrdir to put the new repository in it.
3156
1321
:param shared: The repository should be initialized as a sharable one.
3157
:returns: The new repository object.
3159
1323
This may raise UninitializableFormat if shared repository are not
3160
1324
compatible the a_bzrdir.
3162
raise NotImplementedError(self.initialize)
3164
1327
def is_supported(self):
3165
1328
"""Is this format supported?
3167
1330
Supported formats must be initializable and openable.
3168
Unsupported formats may not support initialization or committing or
1331
Unsupported formats may not support initialization or committing or
3169
1332
some other features depending on the reason for not being supported.
3173
def network_name(self):
3174
"""A simple byte string uniquely identifying this format for RPC calls.
3176
MetaDir repository formats use their disk format string to identify the
3177
repository over the wire. All in one formats such as bzr < 0.8, and
3178
foreign formats like svn/git and hg should use some marker which is
3179
unique and immutable.
3181
raise NotImplementedError(self.network_name)
3183
1336
def check_conversion_target(self, target_format):
3184
if self.rich_root_data and not target_format.rich_root_data:
3185
raise errors.BadConversionTarget(
3186
'Does not support rich root data.', target_format,
3188
if (self.supports_tree_reference and
3189
not getattr(target_format, 'supports_tree_reference', False)):
3190
raise errors.BadConversionTarget(
3191
'Does not support nested trees', target_format,
1337
raise NotImplementedError(self.check_conversion_target)
3194
1339
def open(self, a_bzrdir, _found=False):
3195
1340
"""Return an instance of this format for the bzrdir a_bzrdir.
3197
1342
_found is a private parameter, do not use it.
3199
1344
raise NotImplementedError(self.open)
3201
def _run_post_repo_init_hooks(self, repository, a_bzrdir, shared):
3202
from bzrlib.bzrdir import BzrDir, RepoInitHookParams
3203
hooks = BzrDir.hooks['post_repo_init']
3206
params = RepoInitHookParams(repository, self, a_bzrdir, shared)
1347
class PreSplitOutRepositoryFormat(RepositoryFormat):
1348
"""Base class for the pre split out repository formats."""
1350
rich_root_data = False
1352
def initialize(self, a_bzrdir, shared=False, _internal=False):
1353
"""Create a weave repository.
1355
TODO: when creating split out bzr branch formats, move this to a common
1356
base for Format5, Format6. or something like that.
1359
raise errors.IncompatibleFormat(self, a_bzrdir._format)
1362
# always initialized when the bzrdir is.
1363
return self.open(a_bzrdir, _found=True)
1365
# Create an empty weave
1367
weavefile.write_weave_v5(weave.Weave(), sio)
1368
empty_weave = sio.getvalue()
1370
mutter('creating repository in %s.', a_bzrdir.transport.base)
1371
dirs = ['revision-store', 'weaves']
1372
files = [('inventory.weave', StringIO(empty_weave)),
1375
# FIXME: RBC 20060125 don't peek under the covers
1376
# NB: no need to escape relative paths that are url safe.
1377
control_files = lockable_files.LockableFiles(a_bzrdir.transport,
1378
'branch-lock', lockable_files.TransportLock)
1379
control_files.create_lock()
1380
control_files.lock_write()
1381
control_files._transport.mkdir_multi(dirs,
1382
mode=control_files._dir_mode)
1384
for file, content in files:
1385
control_files.put(file, content)
1387
control_files.unlock()
1388
return self.open(a_bzrdir, _found=True)
1390
def _get_control_store(self, repo_transport, control_files):
1391
"""Return the control store for this repository."""
1392
return self._get_versioned_file_store('',
1397
def _get_text_store(self, transport, control_files):
1398
"""Get a store for file texts for this format."""
1399
raise NotImplementedError(self._get_text_store)
1401
def open(self, a_bzrdir, _found=False):
1402
"""See RepositoryFormat.open()."""
1404
# we are being called directly and must probe.
1405
raise NotImplementedError
1407
repo_transport = a_bzrdir.get_repository_transport(None)
1408
control_files = a_bzrdir._control_files
1409
text_store = self._get_text_store(repo_transport, control_files)
1410
control_store = self._get_control_store(repo_transport, control_files)
1411
_revision_store = self._get_revision_store(repo_transport, control_files)
1412
return AllInOneRepository(_format=self,
1414
_revision_store=_revision_store,
1415
control_store=control_store,
1416
text_store=text_store)
1418
def check_conversion_target(self, target_format):
1422
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1423
"""Bzr repository format 4.
1425
This repository format has:
1427
- TextStores for texts, inventories,revisions.
1429
This format is deprecated: it indexes texts using a text id which is
1430
removed in format 5; initialization and write support for this format
1435
super(RepositoryFormat4, self).__init__()
1436
self._matchingbzrdir = bzrdir.BzrDirFormat4()
1438
def get_format_description(self):
1439
"""See RepositoryFormat.get_format_description()."""
1440
return "Repository format 4"
1442
def initialize(self, url, shared=False, _internal=False):
1443
"""Format 4 branches cannot be created."""
1444
raise errors.UninitializableFormat(self)
1446
def is_supported(self):
1447
"""Format 4 is not supported.
1449
It is not supported because the model changed from 4 to 5 and the
1450
conversion logic is expensive - so doing it on the fly was not
1455
def _get_control_store(self, repo_transport, control_files):
1456
"""Format 4 repositories have no formal control store at this point.
1458
This will cause any control-file-needing apis to fail - this is desired.
1462
def _get_revision_store(self, repo_transport, control_files):
1463
"""See RepositoryFormat._get_revision_store()."""
1464
from bzrlib.xml4 import serializer_v4
1465
return self._get_text_rev_store(repo_transport,
1468
serializer=serializer_v4)
1470
def _get_text_store(self, transport, control_files):
1471
"""See RepositoryFormat._get_text_store()."""
1474
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1475
"""Bzr control format 5.
1477
This repository format has:
1478
- weaves for file texts and inventory
1480
- TextStores for revisions and signatures.
1484
super(RepositoryFormat5, self).__init__()
1485
self._matchingbzrdir = bzrdir.BzrDirFormat5()
1487
def get_format_description(self):
1488
"""See RepositoryFormat.get_format_description()."""
1489
return "Weave repository format 5"
1491
def _get_revision_store(self, repo_transport, control_files):
1492
"""See RepositoryFormat._get_revision_store()."""
1493
"""Return the revision store object for this a_bzrdir."""
1494
return self._get_text_rev_store(repo_transport,
1499
def _get_text_store(self, transport, control_files):
1500
"""See RepositoryFormat._get_text_store()."""
1501
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1504
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1505
"""Bzr control format 6.
1507
This repository format has:
1508
- weaves for file texts and inventory
1509
- hash subdirectory based stores.
1510
- TextStores for revisions and signatures.
1514
super(RepositoryFormat6, self).__init__()
1515
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1517
def get_format_description(self):
1518
"""See RepositoryFormat.get_format_description()."""
1519
return "Weave repository format 6"
1521
def _get_revision_store(self, repo_transport, control_files):
1522
"""See RepositoryFormat._get_revision_store()."""
1523
return self._get_text_rev_store(repo_transport,
1529
def _get_text_store(self, transport, control_files):
1530
"""See RepositoryFormat._get_text_store()."""
1531
return self._get_versioned_file_store('weaves', transport, control_files)
3211
1534
class MetaDirRepositoryFormat(RepositoryFormat):
3212
1535
"""Common base class for the new repositories using the metadir layout."""
3214
1537
rich_root_data = False
3215
supports_tree_reference = False
3216
supports_external_lookups = False
3219
def _matchingbzrdir(self):
3220
matching = bzrdir.BzrDirMetaFormat1()
3221
matching.repository_format = self
3224
1539
def __init__(self):
3225
1540
super(MetaDirRepositoryFormat, self).__init__()
1541
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
3227
1543
def _create_control_files(self, a_bzrdir):
3228
1544
"""Create the required files and the initial control_files object."""
3238
1554
"""Upload the initial blank content."""
3239
1555
control_files = self._create_control_files(a_bzrdir)
3240
1556
control_files.lock_write()
3241
transport = control_files._transport
3243
utf8_files += [('shared-storage', '')]
3245
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
3246
for (filename, content_stream) in files:
3247
transport.put_file(filename, content_stream,
3248
mode=a_bzrdir._get_file_mode())
3249
for (filename, content_bytes) in utf8_files:
3250
transport.put_bytes_non_atomic(filename, content_bytes,
3251
mode=a_bzrdir._get_file_mode())
1558
control_files._transport.mkdir_multi(dirs,
1559
mode=control_files._dir_mode)
1560
for file, content in files:
1561
control_files.put(file, content)
1562
for file, content in utf8_files:
1563
control_files.put_utf8(file, content)
1565
control_files.put_utf8('shared-storage', '')
3253
1567
control_files.unlock()
3255
def network_name(self):
3256
"""Metadir formats have matching disk and network format strings."""
3257
return self.get_format_string()
3260
# Pre-0.8 formats that don't have a disk format string (because they are
3261
# versioned by the matching control directory). We use the control directories
3262
# disk format string as a key for the network_name because they meet the
3263
# constraints (simple string, unique, immutable).
3264
network_format_registry.register_lazy(
3265
"Bazaar-NG branch, format 5\n",
3266
'bzrlib.repofmt.weaverepo',
3267
'RepositoryFormat5',
3269
network_format_registry.register_lazy(
3270
"Bazaar-NG branch, format 6\n",
3271
'bzrlib.repofmt.weaverepo',
3272
'RepositoryFormat6',
3275
# formats which have no format string are not discoverable or independently
3276
# creatable on disk, so are not registered in format_registry. They're
3277
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
3278
# needed, it's constructed directly by the BzrDir. Non-native formats where
3279
# the repository is not separately opened are similar.
3281
format_registry.register_lazy(
3282
'Bazaar-NG Repository format 7',
3283
'bzrlib.repofmt.weaverepo',
3287
format_registry.register_lazy(
3288
'Bazaar-NG Knit Repository Format 1',
3289
'bzrlib.repofmt.knitrepo',
3290
'RepositoryFormatKnit1',
3293
format_registry.register_lazy(
3294
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
3295
'bzrlib.repofmt.knitrepo',
3296
'RepositoryFormatKnit3',
3299
format_registry.register_lazy(
3300
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
3301
'bzrlib.repofmt.knitrepo',
3302
'RepositoryFormatKnit4',
3305
# Pack-based formats. There is one format for pre-subtrees, and one for
3306
# post-subtrees to allow ease of testing.
3307
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
3308
format_registry.register_lazy(
3309
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
3310
'bzrlib.repofmt.pack_repo',
3311
'RepositoryFormatKnitPack1',
3313
format_registry.register_lazy(
3314
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
3315
'bzrlib.repofmt.pack_repo',
3316
'RepositoryFormatKnitPack3',
3318
format_registry.register_lazy(
3319
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
3320
'bzrlib.repofmt.pack_repo',
3321
'RepositoryFormatKnitPack4',
3323
format_registry.register_lazy(
3324
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
3325
'bzrlib.repofmt.pack_repo',
3326
'RepositoryFormatKnitPack5',
3328
format_registry.register_lazy(
3329
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
3330
'bzrlib.repofmt.pack_repo',
3331
'RepositoryFormatKnitPack5RichRoot',
3333
format_registry.register_lazy(
3334
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
3335
'bzrlib.repofmt.pack_repo',
3336
'RepositoryFormatKnitPack5RichRootBroken',
3338
format_registry.register_lazy(
3339
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
3340
'bzrlib.repofmt.pack_repo',
3341
'RepositoryFormatKnitPack6',
3343
format_registry.register_lazy(
3344
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
3345
'bzrlib.repofmt.pack_repo',
3346
'RepositoryFormatKnitPack6RichRoot',
3349
# Development formats.
3350
# Obsolete but kept pending a CHK based subtree format.
3351
format_registry.register_lazy(
3352
("Bazaar development format 2 with subtree support "
3353
"(needs bzr.dev from before 1.8)\n"),
3354
'bzrlib.repofmt.pack_repo',
3355
'RepositoryFormatPackDevelopment2Subtree',
3358
# 1.14->1.16 go below here
3359
format_registry.register_lazy(
3360
'Bazaar development format - group compression and chk inventory'
3361
' (needs bzr.dev from 1.14)\n',
3362
'bzrlib.repofmt.groupcompress_repo',
3363
'RepositoryFormatCHK1',
3366
format_registry.register_lazy(
3367
'Bazaar development format - chk repository with bencode revision '
3368
'serialization (needs bzr.dev from 1.16)\n',
3369
'bzrlib.repofmt.groupcompress_repo',
3370
'RepositoryFormatCHK2',
3372
format_registry.register_lazy(
3373
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
3374
'bzrlib.repofmt.groupcompress_repo',
3375
'RepositoryFormat2a',
1570
class RepositoryFormat7(MetaDirRepositoryFormat):
1571
"""Bzr repository 7.
1573
This repository format has:
1574
- weaves for file texts and inventory
1575
- hash subdirectory based stores.
1576
- TextStores for revisions and signatures.
1577
- a format marker of its own
1578
- an optional 'shared-storage' flag
1579
- an optional 'no-working-trees' flag
1582
def _get_control_store(self, repo_transport, control_files):
1583
"""Return the control store for this repository."""
1584
return self._get_versioned_file_store('',
1589
def get_format_string(self):
1590
"""See RepositoryFormat.get_format_string()."""
1591
return "Bazaar-NG Repository format 7"
1593
def get_format_description(self):
1594
"""See RepositoryFormat.get_format_description()."""
1595
return "Weave repository format 7"
1597
def check_conversion_target(self, target_format):
1600
def _get_revision_store(self, repo_transport, control_files):
1601
"""See RepositoryFormat._get_revision_store()."""
1602
return self._get_text_rev_store(repo_transport,
1609
def _get_text_store(self, transport, control_files):
1610
"""See RepositoryFormat._get_text_store()."""
1611
return self._get_versioned_file_store('weaves',
1615
def initialize(self, a_bzrdir, shared=False):
1616
"""Create a weave repository.
1618
:param shared: If true the repository will be initialized as a shared
1621
# Create an empty weave
1623
weavefile.write_weave_v5(weave.Weave(), sio)
1624
empty_weave = sio.getvalue()
1626
mutter('creating repository in %s.', a_bzrdir.transport.base)
1627
dirs = ['revision-store', 'weaves']
1628
files = [('inventory.weave', StringIO(empty_weave)),
1630
utf8_files = [('format', self.get_format_string())]
1632
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1633
return self.open(a_bzrdir=a_bzrdir, _found=True)
1635
def open(self, a_bzrdir, _found=False, _override_transport=None):
1636
"""See RepositoryFormat.open().
1638
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1639
repository at a slightly different url
1640
than normal. I.e. during 'upgrade'.
1643
format = RepositoryFormat.find_format(a_bzrdir)
1644
assert format.__class__ == self.__class__
1645
if _override_transport is not None:
1646
repo_transport = _override_transport
1648
repo_transport = a_bzrdir.get_repository_transport(None)
1649
control_files = lockable_files.LockableFiles(repo_transport,
1650
'lock', lockdir.LockDir)
1651
text_store = self._get_text_store(repo_transport, control_files)
1652
control_store = self._get_control_store(repo_transport, control_files)
1653
_revision_store = self._get_revision_store(repo_transport, control_files)
1654
return WeaveMetaDirRepository(_format=self,
1656
control_files=control_files,
1657
_revision_store=_revision_store,
1658
control_store=control_store,
1659
text_store=text_store)
1662
class RepositoryFormatKnit(MetaDirRepositoryFormat):
1663
"""Bzr repository knit format (generalized).
1665
This repository format has:
1666
- knits for file texts and inventory
1667
- hash subdirectory based stores.
1668
- knits for revisions and signatures
1669
- TextStores for revisions and signatures.
1670
- a format marker of its own
1671
- an optional 'shared-storage' flag
1672
- an optional 'no-working-trees' flag
1676
def _get_control_store(self, repo_transport, control_files):
1677
"""Return the control store for this repository."""
1678
return VersionedFileStore(
1681
file_mode=control_files._file_mode,
1682
versionedfile_class=knit.KnitVersionedFile,
1683
versionedfile_kwargs={'factory':knit.KnitPlainFactory()},
1686
def _get_revision_store(self, repo_transport, control_files):
1687
"""See RepositoryFormat._get_revision_store()."""
1688
from bzrlib.store.revision.knit import KnitRevisionStore
1689
versioned_file_store = VersionedFileStore(
1691
file_mode=control_files._file_mode,
1694
versionedfile_class=knit.KnitVersionedFile,
1695
versionedfile_kwargs={'delta':False,
1696
'factory':knit.KnitPlainFactory(),
1700
return KnitRevisionStore(versioned_file_store)
1702
def _get_text_store(self, transport, control_files):
1703
"""See RepositoryFormat._get_text_store()."""
1704
return self._get_versioned_file_store('knits',
1707
versionedfile_class=knit.KnitVersionedFile,
1708
versionedfile_kwargs={
1709
'create_parent_dir':True,
1710
'delay_create':True,
1711
'dir_mode':control_files._dir_mode,
1715
def initialize(self, a_bzrdir, shared=False):
1716
"""Create a knit format 1 repository.
1718
:param a_bzrdir: bzrdir to contain the new repository; must already
1720
:param shared: If true the repository will be initialized as a shared
1723
mutter('creating repository in %s.', a_bzrdir.transport.base)
1724
dirs = ['revision-store', 'knits']
1726
utf8_files = [('format', self.get_format_string())]
1728
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1729
repo_transport = a_bzrdir.get_repository_transport(None)
1730
control_files = lockable_files.LockableFiles(repo_transport,
1731
'lock', lockdir.LockDir)
1732
control_store = self._get_control_store(repo_transport, control_files)
1733
transaction = transactions.WriteTransaction()
1734
# trigger a write of the inventory store.
1735
control_store.get_weave_or_empty('inventory', transaction)
1736
_revision_store = self._get_revision_store(repo_transport, control_files)
1737
# the revision id here is irrelevant: it will not be stored, and cannot
1739
_revision_store.has_revision_id('A', transaction)
1740
_revision_store.get_signature_file(transaction)
1741
return self.open(a_bzrdir=a_bzrdir, _found=True)
1743
def open(self, a_bzrdir, _found=False, _override_transport=None):
1744
"""See RepositoryFormat.open().
1746
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1747
repository at a slightly different url
1748
than normal. I.e. during 'upgrade'.
1751
format = RepositoryFormat.find_format(a_bzrdir)
1752
assert format.__class__ == self.__class__
1753
if _override_transport is not None:
1754
repo_transport = _override_transport
1756
repo_transport = a_bzrdir.get_repository_transport(None)
1757
control_files = lockable_files.LockableFiles(repo_transport,
1758
'lock', lockdir.LockDir)
1759
text_store = self._get_text_store(repo_transport, control_files)
1760
control_store = self._get_control_store(repo_transport, control_files)
1761
_revision_store = self._get_revision_store(repo_transport, control_files)
1762
return KnitRepository(_format=self,
1764
control_files=control_files,
1765
_revision_store=_revision_store,
1766
control_store=control_store,
1767
text_store=text_store)
1770
class RepositoryFormatKnit1(RepositoryFormatKnit):
1771
"""Bzr repository knit format 1.
1773
This repository format has:
1774
- knits for file texts and inventory
1775
- hash subdirectory based stores.
1776
- knits for revisions and signatures
1777
- TextStores for revisions and signatures.
1778
- a format marker of its own
1779
- an optional 'shared-storage' flag
1780
- an optional 'no-working-trees' flag
1783
This format was introduced in bzr 0.8.
1785
def get_format_string(self):
1786
"""See RepositoryFormat.get_format_string()."""
1787
return "Bazaar-NG Knit Repository Format 1"
1789
def get_format_description(self):
1790
"""See RepositoryFormat.get_format_description()."""
1791
return "Knit repository format 1"
1793
def check_conversion_target(self, target_format):
1797
class RepositoryFormatKnit2(RepositoryFormatKnit):
1798
"""Bzr repository knit format 2.
1800
THIS FORMAT IS EXPERIMENTAL
1801
This repository format has:
1802
- knits for file texts and inventory
1803
- hash subdirectory based stores.
1804
- knits for revisions and signatures
1805
- TextStores for revisions and signatures.
1806
- a format marker of its own
1807
- an optional 'shared-storage' flag
1808
- an optional 'no-working-trees' flag
1810
- Support for recording full info about the tree root
1814
rich_root_data = True
1816
def get_format_string(self):
1817
"""See RepositoryFormat.get_format_string()."""
1818
return "Bazaar Knit Repository Format 2\n"
1820
def get_format_description(self):
1821
"""See RepositoryFormat.get_format_description()."""
1822
return "Knit repository format 2"
1824
def check_conversion_target(self, target_format):
1825
if not target_format.rich_root_data:
1826
raise errors.BadConversionTarget(
1827
'Does not support rich root data.', target_format)
1829
def open(self, a_bzrdir, _found=False, _override_transport=None):
1830
"""See RepositoryFormat.open().
1832
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1833
repository at a slightly different url
1834
than normal. I.e. during 'upgrade'.
1837
format = RepositoryFormat.find_format(a_bzrdir)
1838
assert format.__class__ == self.__class__
1839
if _override_transport is not None:
1840
repo_transport = _override_transport
1842
repo_transport = a_bzrdir.get_repository_transport(None)
1843
control_files = lockable_files.LockableFiles(repo_transport, 'lock',
1845
text_store = self._get_text_store(repo_transport, control_files)
1846
control_store = self._get_control_store(repo_transport, control_files)
1847
_revision_store = self._get_revision_store(repo_transport, control_files)
1848
return KnitRepository2(_format=self,
1850
control_files=control_files,
1851
_revision_store=_revision_store,
1852
control_store=control_store,
1853
text_store=text_store)
1857
# formats which have no format string are not discoverable
1858
# and not independently creatable, so are not registered.
1859
RepositoryFormat.register_format(RepositoryFormat7())
1860
# KEEP in sync with bzrdir.format_registry default
1861
RepositoryFormat.register_format(RepositoryFormatKnit1())
1862
RepositoryFormat.register_format(RepositoryFormatKnit2())
1863
_legacy_formats = [RepositoryFormat4(),
1864
RepositoryFormat5(),
1865
RepositoryFormat6()]
3379
1868
class InterRepository(InterObject):
3380
1869
"""This class represents operations taking place between two repositories.
3382
1871
Its instances have methods like copy_content and fetch, and contain
3383
references to the source and target repositories these operations can be
1872
references to the source and target repositories these operations can be
3384
1873
carried out on.
3386
1875
Often we will provide convenience methods on 'repository' which carry out
3388
1877
InterRepository.get(other).method_name(parameters).
3391
_walk_to_common_revisions_batch_size = 50
3392
1880
_optimisers = []
3393
1881
"""The available optimised InterRepository types."""
3396
def copy_content(self, revision_id=None):
3397
"""Make a complete copy of the content in self into destination.
3399
This is a destructive operation! Do not use it on existing
3402
:param revision_id: Only copy the content needed to construct
3403
revision_id and its parents.
3406
self.target.set_make_working_trees(self.source.make_working_trees())
3407
except NotImplementedError:
3409
self.target.fetch(self.source, revision_id=revision_id)
3412
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
1883
def copy_content(self, revision_id=None, basis=None):
1884
raise NotImplementedError(self.copy_content)
1886
def fetch(self, revision_id=None, pb=None):
3414
1887
"""Fetch the content required to construct revision_id.
3416
1889
The content is copied from self.source to self.target.
3418
1891
:param revision_id: if None all content is copied, if NULL_REVISION no
3419
1892
content is copied.
3423
ui.ui_factory.warn_experimental_format_fetch(self)
3424
from bzrlib.fetch import RepoFetcher
3425
# See <https://launchpad.net/bugs/456077> asking for a warning here
3426
if self.source._format.network_name() != self.target._format.network_name():
3427
ui.ui_factory.show_user_warning('cross_format_fetch',
3428
from_format=self.source._format,
3429
to_format=self.target._format)
3430
f = RepoFetcher(to_repository=self.target,
3431
from_repository=self.source,
3432
last_revision=revision_id,
3433
fetch_spec=fetch_spec,
3434
find_ghosts=find_ghosts)
3436
def _walk_to_common_revisions(self, revision_ids):
3437
"""Walk out from revision_ids in source to revisions target has.
3439
:param revision_ids: The start point for the search.
3440
:return: A set of revision ids.
3442
target_graph = self.target.get_graph()
3443
revision_ids = frozenset(revision_ids)
3444
missing_revs = set()
3445
source_graph = self.source.get_graph()
3446
# ensure we don't pay silly lookup costs.
3447
searcher = source_graph._make_breadth_first_searcher(revision_ids)
3448
null_set = frozenset([_mod_revision.NULL_REVISION])
3449
searcher_exhausted = False
3453
# Iterate the searcher until we have enough next_revs
3454
while len(next_revs) < self._walk_to_common_revisions_batch_size:
3456
next_revs_part, ghosts_part = searcher.next_with_ghosts()
3457
next_revs.update(next_revs_part)
3458
ghosts.update(ghosts_part)
3459
except StopIteration:
3460
searcher_exhausted = True
3462
# If there are ghosts in the source graph, and the caller asked for
3463
# them, make sure that they are present in the target.
3464
# We don't care about other ghosts as we can't fetch them and
3465
# haven't been asked to.
3466
ghosts_to_check = set(revision_ids.intersection(ghosts))
3467
revs_to_get = set(next_revs).union(ghosts_to_check)
3469
have_revs = set(target_graph.get_parent_map(revs_to_get))
3470
# we always have NULL_REVISION present.
3471
have_revs = have_revs.union(null_set)
3472
# Check if the target is missing any ghosts we need.
3473
ghosts_to_check.difference_update(have_revs)
3475
# One of the caller's revision_ids is a ghost in both the
3476
# source and the target.
3477
raise errors.NoSuchRevision(
3478
self.source, ghosts_to_check.pop())
3479
missing_revs.update(next_revs - have_revs)
3480
# Because we may have walked past the original stop point, make
3481
# sure everything is stopped
3482
stop_revs = searcher.find_seen_ancestors(have_revs)
3483
searcher.stop_searching_any(stop_revs)
3484
if searcher_exhausted:
3486
return searcher.get_result()
1893
:param pb: optional progress bar to use for progress reports. If not
1894
provided a default one will be created.
1896
Returns the copied revision count and the failed revisions in a tuple:
1899
raise NotImplementedError(self.fetch)
3488
1901
@needs_read_lock
3489
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1902
def missing_revision_ids(self, revision_id=None):
3490
1903
"""Return the revision ids that source has that target does not.
1905
These are returned in topological order.
3492
1907
:param revision_id: only return revision ids included by this
3494
:param find_ghosts: If True find missing revisions in deep history
3495
rather than just finding the surface difference.
3496
:return: A bzrlib.graph.SearchResult.
3498
# stop searching at found target revisions.
3499
if not find_ghosts and revision_id is not None:
3500
return self._walk_to_common_revisions([revision_id])
3501
1910
# generic, possibly worst case, slow code path.
3502
1911
target_ids = set(self.target.all_revision_ids())
3503
1912
if revision_id is not None:
3504
1913
source_ids = self.source.get_ancestry(revision_id)
3505
if source_ids[0] is not None:
3506
raise AssertionError()
1914
assert source_ids[0] is None
3507
1915
source_ids.pop(0)
3509
1917
source_ids = self.source.all_revision_ids()
3510
1918
result_set = set(source_ids).difference(target_ids)
3511
return self.source.revision_ids_to_search_result(result_set)
3514
def _same_model(source, target):
3515
"""True if source and target have the same data representation.
3517
Note: this is always called on the base class; overriding it in a
3518
subclass will have no effect.
3521
InterRepository._assert_same_model(source, target)
3523
except errors.IncompatibleRepositories, e:
3527
def _assert_same_model(source, target):
3528
"""Raise an exception if two repositories do not use the same model.
3530
if source.supports_rich_root() != target.supports_rich_root():
3531
raise errors.IncompatibleRepositories(source, target,
3532
"different rich-root support")
3533
if source._serializer != target._serializer:
3534
raise errors.IncompatibleRepositories(source, target,
3535
"different serializers")
1919
# this may look like a no-op: its not. It preserves the ordering
1920
# other_ids had while only returning the members from other_ids
1921
# that we've decided we need.
1922
return [rev_id for rev_id in source_ids if rev_id in result_set]
3538
1925
class InterSameDataRepository(InterRepository):
3539
1926
"""Code for converting between repositories that represent the same data.
3541
1928
Data format and model must match for this to work.
3545
def _get_repo_format_to_test(self):
3546
"""Repository format for testing with.
3548
InterSameData can pull from subtree to subtree and from non-subtree to
3549
non-subtree, so we test this with the richest repository format.
3551
from bzrlib.repofmt import knitrepo
3552
return knitrepo.RepositoryFormatKnit3()
1931
_matching_repo_format = RepositoryFormat4()
1932
"""Repository format for testing with."""
3555
1935
def is_compatible(source, target):
3556
return InterRepository._same_model(source, target)
1936
if not isinstance(source, Repository):
1938
if not isinstance(target, Repository):
1940
if source._format.rich_root_data == target._format.rich_root_data:
1946
def copy_content(self, revision_id=None, basis=None):
1947
"""Make a complete copy of the content in self into destination.
1949
This is a destructive operation! Do not use it on existing
1952
:param revision_id: Only copy the content needed to construct
1953
revision_id and its parents.
1954
:param basis: Copy the needed data preferentially from basis.
1957
self.target.set_make_working_trees(self.source.make_working_trees())
1958
except NotImplementedError:
1960
# grab the basis available data
1961
if basis is not None:
1962
self.target.fetch(basis, revision_id=revision_id)
1963
# but don't bother fetching if we have the needed data now.
1964
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
1965
self.target.has_revision(revision_id)):
1967
self.target.fetch(self.source, revision_id=revision_id)
1970
def fetch(self, revision_id=None, pb=None):
1971
"""See InterRepository.fetch()."""
1972
from bzrlib.fetch import GenericRepoFetcher
1973
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1974
self.source, self.source._format, self.target,
1975
self.target._format)
1976
f = GenericRepoFetcher(to_repository=self.target,
1977
from_repository=self.source,
1978
last_revision=revision_id,
1980
return f.count_copied, f.failed_revisions
3559
1983
class InterWeaveRepo(InterSameDataRepository):
3560
"""Optimised code paths between Weave based repositories.
3562
This should be in bzrlib/repofmt/weaverepo.py but we have not yet
3563
implemented lazy inter-object optimisation.
3567
def _get_repo_format_to_test(self):
3568
from bzrlib.repofmt import weaverepo
3569
return weaverepo.RepositoryFormat7()
1984
"""Optimised code paths between Weave based repositories."""
1986
_matching_repo_format = RepositoryFormat7()
1987
"""Repository format for testing with."""
3572
1990
def is_compatible(source, target):
3573
1991
"""Be compatible with known Weave formats.
3575
1993
We don't test for the stores being of specific types because that
3576
could lead to confusing results, and there is no need to be
1994
could lead to confusing results, and there is no need to be
3577
1995
overly general.
3579
from bzrlib.repofmt.weaverepo import (
3585
1998
return (isinstance(source._format, (RepositoryFormat5,
3586
1999
RepositoryFormat6,
3651
2083
# we do not have a revision as that would be pointless.
3652
2084
target_ids = set(self.target._all_possible_ids())
3653
2085
possibly_present_revisions = target_ids.intersection(source_ids_set)
3654
actually_present_revisions = set(
3655
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2086
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3656
2087
required_revisions = source_ids_set.difference(actually_present_revisions)
2088
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3657
2089
if revision_id is not None:
3658
2090
# we used get_ancestry to determine source_ids then we are assured all
3659
2091
# revisions referenced are present as they are installed in topological order.
3660
2092
# and the tip revision was validated by get_ancestry.
3661
result_set = required_revisions
2093
return required_topo_revisions
3663
# if we just grabbed the possibly available ids, then
2095
# if we just grabbed the possibly available ids, then
3664
2096
# we only have an estimate of whats available and need to validate
3665
2097
# that against the revision records.
3667
self.source._eliminate_revisions_not_present(required_revisions))
3668
return self.source.revision_ids_to_search_result(result_set)
2098
return self.source._eliminate_revisions_not_present(required_topo_revisions)
3671
2101
class InterKnitRepo(InterSameDataRepository):
3672
2102
"""Optimised code paths between Knit based repositories."""
3675
def _get_repo_format_to_test(self):
3676
from bzrlib.repofmt import knitrepo
3677
return knitrepo.RepositoryFormatKnit1()
2104
_matching_repo_format = RepositoryFormatKnit1()
2105
"""Repository format for testing with."""
3680
2108
def is_compatible(source, target):
3681
2109
"""Be compatible with known Knit formats.
3683
2111
We don't test for the stores being of specific types because that
3684
could lead to confusing results, and there is no need to be
2112
could lead to confusing results, and there is no need to be
3685
2113
overly general.
3687
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
3689
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
3690
isinstance(target._format, RepositoryFormatKnit))
2116
return (isinstance(source._format, (RepositoryFormatKnit1)) and
2117
isinstance(target._format, (RepositoryFormatKnit1)))
3691
2118
except AttributeError:
3693
return are_knits and InterRepository._same_model(source, target)
2122
def fetch(self, revision_id=None, pb=None):
2123
"""See InterRepository.fetch()."""
2124
from bzrlib.fetch import KnitRepoFetcher
2125
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2126
self.source, self.source._format, self.target, self.target._format)
2127
f = KnitRepoFetcher(to_repository=self.target,
2128
from_repository=self.source,
2129
last_revision=revision_id,
2131
return f.count_copied, f.failed_revisions
3695
2133
@needs_read_lock
3696
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2134
def missing_revision_ids(self, revision_id=None):
3697
2135
"""See InterRepository.missing_revision_ids()."""
3698
2136
if revision_id is not None:
3699
2137
source_ids = self.source.get_ancestry(revision_id)
3700
if source_ids[0] is not None:
3701
raise AssertionError()
2138
assert source_ids[0] is None
3702
2139
source_ids.pop(0)
3704
source_ids = self.source.all_revision_ids()
2141
source_ids = self.source._all_possible_ids()
3705
2142
source_ids_set = set(source_ids)
3706
2143
# source_ids is the worst possible case we may need to pull.
3707
2144
# now we want to filter source_ids against what we actually
3708
2145
# have in target, but don't try to check for existence where we know
3709
2146
# we do not have a revision as that would be pointless.
3710
target_ids = set(self.target.all_revision_ids())
2147
target_ids = set(self.target._all_possible_ids())
3711
2148
possibly_present_revisions = target_ids.intersection(source_ids_set)
3712
actually_present_revisions = set(
3713
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2149
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3714
2150
required_revisions = source_ids_set.difference(actually_present_revisions)
2151
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3715
2152
if revision_id is not None:
3716
2153
# we used get_ancestry to determine source_ids then we are assured all
3717
2154
# revisions referenced are present as they are installed in topological order.
3718
2155
# and the tip revision was validated by get_ancestry.
3719
result_set = required_revisions
2156
return required_topo_revisions
3721
# if we just grabbed the possibly available ids, then
2158
# if we just grabbed the possibly available ids, then
3722
2159
# we only have an estimate of whats available and need to validate
3723
2160
# that against the revision records.
3725
self.source._eliminate_revisions_not_present(required_revisions))
3726
return self.source.revision_ids_to_search_result(result_set)
3729
class InterDifferingSerializer(InterRepository):
3732
def _get_repo_format_to_test(self):
2161
return self.source._eliminate_revisions_not_present(required_topo_revisions)
2164
class InterModel1and2(InterRepository):
2166
_matching_repo_format = None
3736
2169
def is_compatible(source, target):
3737
"""Be compatible with Knit2 source and Knit3 target"""
3738
# This is redundant with format.check_conversion_target(), however that
3739
# raises an exception, and we just want to say "False" as in we won't
3740
# support converting between these formats.
3741
if 'IDS_never' in debug.debug_flags:
3743
if source.supports_rich_root() and not target.supports_rich_root():
3745
if (source._format.supports_tree_reference
3746
and not target._format.supports_tree_reference):
3748
if target._fallback_repositories and target._format.supports_chks:
3749
# IDS doesn't know how to copy CHKs for the parent inventories it
3750
# adds to stacked repos.
3752
if 'IDS_always' in debug.debug_flags:
2170
if not isinstance(source, Repository):
2172
if not isinstance(target, Repository):
2174
if not source._format.rich_root_data and target._format.rich_root_data:
3754
# Only use this code path for local source and target. IDS does far
3755
# too much IO (both bandwidth and roundtrips) over a network.
3756
if not source.bzrdir.transport.base.startswith('file:///'):
3758
if not target.bzrdir.transport.base.startswith('file:///'):
3762
def _get_trees(self, revision_ids, cache):
3764
for rev_id in revision_ids:
3766
possible_trees.append((rev_id, cache[rev_id]))
3768
# Not cached, but inventory might be present anyway.
3770
tree = self.source.revision_tree(rev_id)
3771
except errors.NoSuchRevision:
3772
# Nope, parent is ghost.
3775
cache[rev_id] = tree
3776
possible_trees.append((rev_id, tree))
3777
return possible_trees
3779
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3780
"""Get the best delta and base for this revision.
3782
:return: (basis_id, delta)
3785
# Generate deltas against each tree, to find the shortest.
3786
texts_possibly_new_in_tree = set()
3787
for basis_id, basis_tree in possible_trees:
3788
delta = tree.inventory._make_delta(basis_tree.inventory)
3789
for old_path, new_path, file_id, new_entry in delta:
3790
if new_path is None:
3791
# This file_id isn't present in the new rev, so we don't
3795
# Rich roots are handled elsewhere...
3797
kind = new_entry.kind
3798
if kind != 'directory' and kind != 'file':
3799
# No text record associated with this inventory entry.
3801
# This is a directory or file that has changed somehow.
3802
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3803
deltas.append((len(delta), basis_id, delta))
3805
return deltas[0][1:]
3807
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3808
"""Find all parent revisions that are absent, but for which the
3809
inventory is present, and copy those inventories.
3811
This is necessary to preserve correctness when the source is stacked
3812
without fallbacks configured. (Note that in cases like upgrade the
3813
source may be not have _fallback_repositories even though it is
3817
for parents in parent_map.values():
3818
parent_revs.update(parents)
3819
present_parents = self.source.get_parent_map(parent_revs)
3820
absent_parents = set(parent_revs).difference(present_parents)
3821
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3822
(rev_id,) for rev_id in absent_parents)
3823
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3824
for parent_tree in self.source.revision_trees(parent_inv_ids):
3825
current_revision_id = parent_tree.get_revision_id()
3826
parents_parents_keys = parent_invs_keys_for_stacking[
3827
(current_revision_id,)]
3828
parents_parents = [key[-1] for key in parents_parents_keys]
3829
basis_id = _mod_revision.NULL_REVISION
3830
basis_tree = self.source.revision_tree(basis_id)
3831
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3832
self.target.add_inventory_by_delta(
3833
basis_id, delta, current_revision_id, parents_parents)
3834
cache[current_revision_id] = parent_tree
3836
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3837
"""Fetch across a few revisions.
3839
:param revision_ids: The revisions to copy
3840
:param basis_id: The revision_id of a tree that must be in cache, used
3841
as a basis for delta when no other base is available
3842
:param cache: A cache of RevisionTrees that we can use.
3843
:param a_graph: A Graph object to determine the heads() of the
3844
rich-root data stream.
3845
:return: The revision_id of the last converted tree. The RevisionTree
3846
for it will be in cache
3848
# Walk though all revisions; get inventory deltas, copy referenced
3849
# texts that delta references, insert the delta, revision and
3851
root_keys_to_create = set()
3854
pending_revisions = []
3855
parent_map = self.source.get_parent_map(revision_ids)
3856
self._fetch_parent_invs_for_stacking(parent_map, cache)
3857
self.source._safe_to_return_from_cache = True
3858
for tree in self.source.revision_trees(revision_ids):
3859
# Find a inventory delta for this revision.
3860
# Find text entries that need to be copied, too.
3861
current_revision_id = tree.get_revision_id()
3862
parent_ids = parent_map.get(current_revision_id, ())
3863
parent_trees = self._get_trees(parent_ids, cache)
3864
possible_trees = list(parent_trees)
3865
if len(possible_trees) == 0:
3866
# There either aren't any parents, or the parents are ghosts,
3867
# so just use the last converted tree.
3868
possible_trees.append((basis_id, cache[basis_id]))
3869
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3871
revision = self.source.get_revision(current_revision_id)
3872
pending_deltas.append((basis_id, delta,
3873
current_revision_id, revision.parent_ids))
3874
if self._converting_to_rich_root:
3875
self._revision_id_to_root_id[current_revision_id] = \
3877
# Determine which texts are in present in this revision but not in
3878
# any of the available parents.
3879
texts_possibly_new_in_tree = set()
3880
for old_path, new_path, file_id, entry in delta:
3881
if new_path is None:
3882
# This file_id isn't present in the new rev
3886
if not self.target.supports_rich_root():
3887
# The target doesn't support rich root, so we don't
3890
if self._converting_to_rich_root:
3891
# This can't be copied normally, we have to insert
3893
root_keys_to_create.add((file_id, entry.revision))
3896
texts_possibly_new_in_tree.add((file_id, entry.revision))
3897
for basis_id, basis_tree in possible_trees:
3898
basis_inv = basis_tree.inventory
3899
for file_key in list(texts_possibly_new_in_tree):
3900
file_id, file_revision = file_key
3902
entry = basis_inv[file_id]
3903
except errors.NoSuchId:
3905
if entry.revision == file_revision:
3906
texts_possibly_new_in_tree.remove(file_key)
3907
text_keys.update(texts_possibly_new_in_tree)
3908
pending_revisions.append(revision)
3909
cache[current_revision_id] = tree
3910
basis_id = current_revision_id
3911
self.source._safe_to_return_from_cache = False
3913
from_texts = self.source.texts
3914
to_texts = self.target.texts
3915
if root_keys_to_create:
3916
root_stream = _mod_fetch._new_root_data_stream(
3917
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3918
self.source, graph=a_graph)
3919
to_texts.insert_record_stream(root_stream)
3920
to_texts.insert_record_stream(from_texts.get_record_stream(
3921
text_keys, self.target._format._fetch_order,
3922
not self.target._format._fetch_uses_deltas))
3923
# insert inventory deltas
3924
for delta in pending_deltas:
3925
self.target.add_inventory_by_delta(*delta)
3926
if self.target._fallback_repositories:
3927
# Make sure this stacked repository has all the parent inventories
3928
# for the new revisions that we are about to insert. We do this
3929
# before adding the revisions so that no revision is added until
3930
# all the inventories it may depend on are added.
3931
# Note that this is overzealous, as we may have fetched these in an
3934
revision_ids = set()
3935
for revision in pending_revisions:
3936
revision_ids.add(revision.revision_id)
3937
parent_ids.update(revision.parent_ids)
3938
parent_ids.difference_update(revision_ids)
3939
parent_ids.discard(_mod_revision.NULL_REVISION)
3940
parent_map = self.source.get_parent_map(parent_ids)
3941
# we iterate over parent_map and not parent_ids because we don't
3942
# want to try copying any revision which is a ghost
3943
for parent_tree in self.source.revision_trees(parent_map):
3944
current_revision_id = parent_tree.get_revision_id()
3945
parents_parents = parent_map[current_revision_id]
3946
possible_trees = self._get_trees(parents_parents, cache)
3947
if len(possible_trees) == 0:
3948
# There either aren't any parents, or the parents are
3949
# ghosts, so just use the last converted tree.
3950
possible_trees.append((basis_id, cache[basis_id]))
3951
basis_id, delta = self._get_delta_for_revision(parent_tree,
3952
parents_parents, possible_trees)
3953
self.target.add_inventory_by_delta(
3954
basis_id, delta, current_revision_id, parents_parents)
3955
# insert signatures and revisions
3956
for revision in pending_revisions:
3958
signature = self.source.get_signature_text(
3959
revision.revision_id)
3960
self.target.add_signature_text(revision.revision_id,
3962
except errors.NoSuchRevision:
3964
self.target.add_revision(revision.revision_id, revision)
3967
def _fetch_all_revisions(self, revision_ids, pb):
3968
"""Fetch everything for the list of revisions.
3970
:param revision_ids: The list of revisions to fetch. Must be in
3972
:param pb: A ProgressTask
3975
basis_id, basis_tree = self._get_basis(revision_ids[0])
3977
cache = lru_cache.LRUCache(100)
3978
cache[basis_id] = basis_tree
3979
del basis_tree # We don't want to hang on to it here
3981
if self._converting_to_rich_root and len(revision_ids) > 100:
3982
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3987
for offset in range(0, len(revision_ids), batch_size):
3988
self.target.start_write_group()
3990
pb.update('Transferring revisions', offset,
3992
batch = revision_ids[offset:offset+batch_size]
3993
basis_id = self._fetch_batch(batch, basis_id, cache,
3996
self.source._safe_to_return_from_cache = False
3997
self.target.abort_write_group()
4000
hint = self.target.commit_write_group()
4003
if hints and self.target._format.pack_compresses:
4004
self.target.pack(hint=hints)
4005
pb.update('Transferring revisions', len(revision_ids),
4009
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
4011
"""See InterRepository.fetch()."""
4012
if fetch_spec is not None:
4013
raise AssertionError("Not implemented yet...")
4014
ui.ui_factory.warn_experimental_format_fetch(self)
4015
if (not self.source.supports_rich_root()
4016
and self.target.supports_rich_root()):
4017
self._converting_to_rich_root = True
4018
self._revision_id_to_root_id = {}
4020
self._converting_to_rich_root = False
4021
# See <https://launchpad.net/bugs/456077> asking for a warning here
4022
if self.source._format.network_name() != self.target._format.network_name():
4023
ui.ui_factory.show_user_warning('cross_format_fetch',
4024
from_format=self.source._format,
4025
to_format=self.target._format)
4026
revision_ids = self.target.search_missing_revision_ids(self.source,
4027
revision_id, find_ghosts=find_ghosts).get_keys()
4028
if not revision_ids:
4030
revision_ids = tsort.topo_sort(
4031
self.source.get_graph().get_parent_map(revision_ids))
4032
if not revision_ids:
4034
# Walk though all revisions; get inventory deltas, copy referenced
4035
# texts that delta references, insert the delta, revision and
4038
my_pb = ui.ui_factory.nested_progress_bar()
4041
symbol_versioning.warn(
4042
symbol_versioning.deprecated_in((1, 14, 0))
4043
% "pb parameter to fetch()")
4046
self._fetch_all_revisions(revision_ids, pb)
4048
if my_pb is not None:
4050
return len(revision_ids), 0
4052
def _get_basis(self, first_revision_id):
4053
"""Get a revision and tree which exists in the target.
4055
This assumes that first_revision_id is selected for transmission
4056
because all other ancestors are already present. If we can't find an
4057
ancestor we fall back to NULL_REVISION since we know that is safe.
4059
:return: (basis_id, basis_tree)
4061
first_rev = self.source.get_revision(first_revision_id)
4063
basis_id = first_rev.parent_ids[0]
4064
# only valid as a basis if the target has it
4065
self.target.get_revision(basis_id)
4066
# Try to get a basis tree - if its a ghost it will hit the
4067
# NoSuchRevision case.
4068
basis_tree = self.source.revision_tree(basis_id)
4069
except (IndexError, errors.NoSuchRevision):
4070
basis_id = _mod_revision.NULL_REVISION
4071
basis_tree = self.source.revision_tree(basis_id)
4072
return basis_id, basis_tree
4075
InterRepository.register_optimiser(InterDifferingSerializer)
2180
def fetch(self, revision_id=None, pb=None):
2181
"""See InterRepository.fetch()."""
2182
from bzrlib.fetch import Model1toKnit2Fetcher
2183
f = Model1toKnit2Fetcher(to_repository=self.target,
2184
from_repository=self.source,
2185
last_revision=revision_id,
2187
return f.count_copied, f.failed_revisions
2190
def copy_content(self, revision_id=None, basis=None):
2191
"""Make a complete copy of the content in self into destination.
2193
This is a destructive operation! Do not use it on existing
2196
:param revision_id: Only copy the content needed to construct
2197
revision_id and its parents.
2198
:param basis: Copy the needed data preferentially from basis.
2201
self.target.set_make_working_trees(self.source.make_working_trees())
2202
except NotImplementedError:
2204
# grab the basis available data
2205
if basis is not None:
2206
self.target.fetch(basis, revision_id=revision_id)
2207
# but don't bother fetching if we have the needed data now.
2208
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2209
self.target.has_revision(revision_id)):
2211
self.target.fetch(self.source, revision_id=revision_id)
2214
class InterKnit1and2(InterKnitRepo):
2216
_matching_repo_format = None
2219
def is_compatible(source, target):
2220
"""Be compatible with Knit1 source and Knit2 target"""
2222
return (isinstance(source._format, (RepositoryFormatKnit1)) and
2223
isinstance(target._format, (RepositoryFormatKnit2)))
2224
except AttributeError:
2228
def fetch(self, revision_id=None, pb=None):
2229
"""See InterRepository.fetch()."""
2230
from bzrlib.fetch import Knit1to2Fetcher
2231
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2232
self.source, self.source._format, self.target,
2233
self.target._format)
2234
f = Knit1to2Fetcher(to_repository=self.target,
2235
from_repository=self.source,
2236
last_revision=revision_id,
2238
return f.count_copied, f.failed_revisions
4076
2241
InterRepository.register_optimiser(InterSameDataRepository)
4077
2242
InterRepository.register_optimiser(InterWeaveRepo)
4078
2243
InterRepository.register_optimiser(InterKnitRepo)
2244
InterRepository.register_optimiser(InterModel1and2)
2245
InterRepository.register_optimiser(InterKnit1and2)
2248
class RepositoryTestProviderAdapter(object):
2249
"""A tool to generate a suite testing multiple repository formats at once.
2251
This is done by copying the test once for each transport and injecting
2252
the transport_server, transport_readonly_server, and bzrdir_format and
2253
repository_format classes into each copy. Each copy is also given a new id()
2254
to make it easy to identify.
2257
def __init__(self, transport_server, transport_readonly_server, formats):
2258
self._transport_server = transport_server
2259
self._transport_readonly_server = transport_readonly_server
2260
self._formats = formats
2262
def adapt(self, test):
2263
result = unittest.TestSuite()
2264
for repository_format, bzrdir_format in self._formats:
2265
new_test = deepcopy(test)
2266
new_test.transport_server = self._transport_server
2267
new_test.transport_readonly_server = self._transport_readonly_server
2268
new_test.bzrdir_format = bzrdir_format
2269
new_test.repository_format = repository_format
2270
def make_new_test_id():
2271
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
2272
return lambda: new_id
2273
new_test.id = make_new_test_id()
2274
result.addTest(new_test)
2278
class InterRepositoryTestProviderAdapter(object):
2279
"""A tool to generate a suite testing multiple inter repository formats.
2281
This is done by copying the test once for each interrepo provider and injecting
2282
the transport_server, transport_readonly_server, repository_format and
2283
repository_to_format classes into each copy.
2284
Each copy is also given a new id() to make it easy to identify.
2287
def __init__(self, transport_server, transport_readonly_server, formats):
2288
self._transport_server = transport_server
2289
self._transport_readonly_server = transport_readonly_server
2290
self._formats = formats
2292
def adapt(self, test):
2293
result = unittest.TestSuite()
2294
for interrepo_class, repository_format, repository_format_to in self._formats:
2295
new_test = deepcopy(test)
2296
new_test.transport_server = self._transport_server
2297
new_test.transport_readonly_server = self._transport_readonly_server
2298
new_test.interrepo_class = interrepo_class
2299
new_test.repository_format = repository_format
2300
new_test.repository_format_to = repository_format_to
2301
def make_new_test_id():
2302
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
2303
return lambda: new_id
2304
new_test.id = make_new_test_id()
2305
result.addTest(new_test)
2309
def default_test_list():
2310
"""Generate the default list of interrepo permutations to test."""
2312
# test the default InterRepository between format 6 and the current
2314
# XXX: robertc 20060220 reinstate this when there are two supported
2315
# formats which do not have an optimal code path between them.
2316
#result.append((InterRepository,
2317
# RepositoryFormat6(),
2318
# RepositoryFormatKnit1()))
2319
for optimiser in InterRepository._optimisers:
2320
if optimiser._matching_repo_format is not None:
2321
result.append((optimiser,
2322
optimiser._matching_repo_format,
2323
optimiser._matching_repo_format
2325
# if there are specific combinations we want to use, we can add them
2327
result.append((InterModel1and2, RepositoryFormat5(),
2328
RepositoryFormatKnit2()))
2329
result.append((InterKnit1and2, RepositoryFormatKnit1(),
2330
RepositoryFormatKnit2()))
4081
2334
class CopyConverter(object):
4082
2335
"""A repository conversion tool which just performs a copy of the content.
4084
2337
This is slow but quite reliable.
4090
2343
:param target_format: The format the resulting repository should be.
4092
2345
self.target_format = target_format
4094
2347
def convert(self, repo, pb):
4095
2348
"""Perform the conversion of to_convert, giving feedback via pb.
4097
2350
:param to_convert: The disk object to convert.
4098
2351
:param pb: a progress bar to use for progress information.
4100
pb = ui.ui_factory.nested_progress_bar()
4103
2356
# this is only useful with metadir layouts - separated repo content.
4104
2357
# trigger an assertion if not such
4105
2358
repo._format.get_format_string()
4106
2359
self.repo_dir = repo.bzrdir
4107
pb.update('Moving repository to repository.backup')
2360
self.step('Moving repository to repository.backup')
4108
2361
self.repo_dir.transport.move('repository', 'repository.backup')
4109
2362
backup_transport = self.repo_dir.transport.clone('repository.backup')
4110
2363
repo._format.check_conversion_target(self.target_format)
4111
2364
self.source_repo = repo._format.open(self.repo_dir,
4113
2366
_override_transport=backup_transport)
4114
pb.update('Creating new repository')
2367
self.step('Creating new repository')
4115
2368
converted = self.target_format.initialize(self.repo_dir,
4116
2369
self.source_repo.is_shared())
4117
2370
converted.lock_write()
4119
pb.update('Copying content')
2372
self.step('Copying content into repository.')
4120
2373
self.source_repo.copy_content_into(converted)
4122
2375
converted.unlock()
4123
pb.update('Deleting old repository content')
2376
self.step('Deleting old repository content.')
4124
2377
self.repo_dir.transport.delete_tree('repository.backup')
4125
ui.ui_factory.note('repository converted')
2378
self.pb.note('repository converted')
2380
def step(self, message):
2381
"""Update the pb by a step."""
2383
self.pb.update(message, self.count, self.total)
2386
class CommitBuilder(object):
2387
"""Provides an interface to build up a commit.
2389
This allows describing a tree to be committed without needing to
2390
know the internals of the format of the repository.
2393
record_root_entry = False
2394
def __init__(self, repository, parents, config, timestamp=None,
2395
timezone=None, committer=None, revprops=None,
2397
"""Initiate a CommitBuilder.
2399
:param repository: Repository to commit to.
2400
:param parents: Revision ids of the parents of the new revision.
2401
:param config: Configuration to use.
2402
:param timestamp: Optional timestamp recorded for commit.
2403
:param timezone: Optional timezone for timestamp.
2404
:param committer: Optional committer to set for commit.
2405
:param revprops: Optional dictionary of revision properties.
2406
:param revision_id: Optional revision id.
2408
self._config = config
2410
if committer is None:
2411
self._committer = self._config.username()
2413
assert isinstance(committer, basestring), type(committer)
2414
self._committer = committer
2416
self.new_inventory = Inventory(None)
2417
self._new_revision_id = revision_id
2418
self.parents = parents
2419
self.repository = repository
2422
if revprops is not None:
2423
self._revprops.update(revprops)
2425
if timestamp is None:
2426
timestamp = time.time()
2427
# Restrict resolution to 1ms
2428
self._timestamp = round(timestamp, 3)
2430
if timezone is None:
2431
self._timezone = local_time_offset()
2433
self._timezone = int(timezone)
2435
self._generate_revision_if_needed()
2437
def commit(self, message):
2438
"""Make the actual commit.
2440
:return: The revision id of the recorded revision.
2442
rev = _mod_revision.Revision(
2443
timestamp=self._timestamp,
2444
timezone=self._timezone,
2445
committer=self._committer,
2447
inventory_sha1=self.inv_sha1,
2448
revision_id=self._new_revision_id,
2449
properties=self._revprops)
2450
rev.parent_ids = self.parents
2451
self.repository.add_revision(self._new_revision_id, rev,
2452
self.new_inventory, self._config)
2453
return self._new_revision_id
2455
def revision_tree(self):
2456
"""Return the tree that was just committed.
2458
After calling commit() this can be called to get a RevisionTree
2459
representing the newly committed tree. This is preferred to
2460
calling Repository.revision_tree() because that may require
2461
deserializing the inventory, while we already have a copy in
2464
return RevisionTree(self.repository, self.new_inventory,
2465
self._new_revision_id)
2467
def finish_inventory(self):
2468
"""Tell the builder that the inventory is finished."""
2469
if self.new_inventory.root is None:
2470
symbol_versioning.warn('Root entry should be supplied to'
2471
' record_entry_contents, as of bzr 0.10.',
2472
DeprecationWarning, stacklevel=2)
2473
self.new_inventory.add(InventoryDirectory(ROOT_ID, '', None))
2474
self.new_inventory.revision_id = self._new_revision_id
2475
self.inv_sha1 = self.repository.add_inventory(
2476
self._new_revision_id,
2481
def _gen_revision_id(self):
2482
"""Return new revision-id."""
2483
return generate_ids.gen_revision_id(self._config.username(),
2486
def _generate_revision_if_needed(self):
2487
"""Create a revision id if None was supplied.
2489
If the repository can not support user-specified revision ids
2490
they should override this function and raise CannotSetRevisionId
2491
if _new_revision_id is not None.
2493
:raises: CannotSetRevisionId
2495
if self._new_revision_id is None:
2496
self._new_revision_id = self._gen_revision_id()
2498
def record_entry_contents(self, ie, parent_invs, path, tree):
2499
"""Record the content of ie from tree into the commit if needed.
2501
Side effect: sets ie.revision when unchanged
2503
:param ie: An inventory entry present in the commit.
2504
:param parent_invs: The inventories of the parent revisions of the
2506
:param path: The path the entry is at in the tree.
2507
:param tree: The tree which contains this entry and should be used to
2510
if self.new_inventory.root is None and ie.parent_id is not None:
2511
symbol_versioning.warn('Root entry should be supplied to'
2512
' record_entry_contents, as of bzr 0.10.',
2513
DeprecationWarning, stacklevel=2)
2514
self.record_entry_contents(tree.inventory.root.copy(), parent_invs,
2516
self.new_inventory.add(ie)
2518
# ie.revision is always None if the InventoryEntry is considered
2519
# for committing. ie.snapshot will record the correct revision
2520
# which may be the sole parent if it is untouched.
2521
if ie.revision is not None:
2524
# In this revision format, root entries have no knit or weave
2525
if ie is self.new_inventory.root:
2526
# When serializing out to disk and back in
2527
# root.revision is always _new_revision_id
2528
ie.revision = self._new_revision_id
2530
previous_entries = ie.find_previous_heads(
2532
self.repository.weave_store,
2533
self.repository.get_transaction())
2534
# we are creating a new revision for ie in the history store
2536
ie.snapshot(self._new_revision_id, path, previous_entries, tree, self)
2538
def modified_directory(self, file_id, file_parents):
2539
"""Record the presence of a symbolic link.
2541
:param file_id: The file_id of the link to record.
2542
:param file_parents: The per-file parent revision ids.
2544
self._add_text_to_weave(file_id, [], file_parents.keys())
2546
def modified_file_text(self, file_id, file_parents,
2547
get_content_byte_lines, text_sha1=None,
2549
"""Record the text of file file_id
2551
:param file_id: The file_id of the file to record the text of.
2552
:param file_parents: The per-file parent revision ids.
2553
:param get_content_byte_lines: A callable which will return the byte
2555
:param text_sha1: Optional SHA1 of the file contents.
2556
:param text_size: Optional size of the file contents.
2558
# mutter('storing text of file {%s} in revision {%s} into %r',
2559
# file_id, self._new_revision_id, self.repository.weave_store)
2560
# special case to avoid diffing on renames or
2562
if (len(file_parents) == 1
2563
and text_sha1 == file_parents.values()[0].text_sha1
2564
and text_size == file_parents.values()[0].text_size):
2565
previous_ie = file_parents.values()[0]
2566
versionedfile = self.repository.weave_store.get_weave(file_id,
2567
self.repository.get_transaction())
2568
versionedfile.clone_text(self._new_revision_id,
2569
previous_ie.revision, file_parents.keys())
2570
return text_sha1, text_size
2572
new_lines = get_content_byte_lines()
2573
# TODO: Rather than invoking sha_strings here, _add_text_to_weave
2574
# should return the SHA1 and size
2575
self._add_text_to_weave(file_id, new_lines, file_parents.keys())
2576
return osutils.sha_strings(new_lines), \
2577
sum(map(len, new_lines))
2579
def modified_link(self, file_id, file_parents, link_target):
2580
"""Record the presence of a symbolic link.
2582
:param file_id: The file_id of the link to record.
2583
:param file_parents: The per-file parent revision ids.
2584
:param link_target: Target location of this link.
2586
self._add_text_to_weave(file_id, [], file_parents.keys())
2588
def _add_text_to_weave(self, file_id, new_lines, parents):
2589
versionedfile = self.repository.weave_store.get_weave_or_empty(
2590
file_id, self.repository.get_transaction())
2591
versionedfile.add_lines(self._new_revision_id, parents, new_lines)
2592
versionedfile.clear_cache()
2595
class _CommitBuilder(CommitBuilder):
2596
"""Temporary class so old CommitBuilders are detected properly
2598
Note: CommitBuilder works whether or not root entry is recorded.
2601
record_root_entry = True
2604
class RootCommitBuilder(CommitBuilder):
2605
"""This commitbuilder actually records the root id"""
2607
record_root_entry = True
2609
def record_entry_contents(self, ie, parent_invs, path, tree):
2610
"""Record the content of ie from tree into the commit if needed.
2612
Side effect: sets ie.revision when unchanged
2614
:param ie: An inventory entry present in the commit.
2615
:param parent_invs: The inventories of the parent revisions of the
2617
:param path: The path the entry is at in the tree.
2618
:param tree: The tree which contains this entry and should be used to
2621
assert self.new_inventory.root is not None or ie.parent_id is None
2622
self.new_inventory.add(ie)
2624
# ie.revision is always None if the InventoryEntry is considered
2625
# for committing. ie.snapshot will record the correct revision
2626
# which may be the sole parent if it is untouched.
2627
if ie.revision is not None:
2630
previous_entries = ie.find_previous_heads(
2632
self.repository.weave_store,
2633
self.repository.get_transaction())
2634
# we are creating a new revision for ie in the history store
2636
ie.snapshot(self._new_revision_id, path, previous_entries, tree, self)
4129
2639
_unescape_map = {
4154
2658
if _unescape_re is None:
4155
2659
_unescape_re = re.compile('\&([^;]*);')
4156
2660
return _unescape_re.sub(_unescaper, data)
4159
class _VersionedFileChecker(object):
4161
def __init__(self, repository, text_key_references=None, ancestors=None):
4162
self.repository = repository
4163
self.text_index = self.repository._generate_text_key_index(
4164
text_key_references=text_key_references, ancestors=ancestors)
4166
def calculate_file_version_parents(self, text_key):
4167
"""Calculate the correct parents for a file version according to
4170
parent_keys = self.text_index[text_key]
4171
if parent_keys == [_mod_revision.NULL_REVISION]:
4173
return tuple(parent_keys)
4175
def check_file_version_parents(self, texts, progress_bar=None):
4176
"""Check the parents stored in a versioned file are correct.
4178
It also detects file versions that are not referenced by their
4179
corresponding revision's inventory.
4181
:returns: A tuple of (wrong_parents, dangling_file_versions).
4182
wrong_parents is a dict mapping {revision_id: (stored_parents,
4183
correct_parents)} for each revision_id where the stored parents
4184
are not correct. dangling_file_versions is a set of (file_id,
4185
revision_id) tuples for versions that are present in this versioned
4186
file, but not used by the corresponding inventory.
4188
local_progress = None
4189
if progress_bar is None:
4190
local_progress = ui.ui_factory.nested_progress_bar()
4191
progress_bar = local_progress
4193
return self._check_file_version_parents(texts, progress_bar)
4196
local_progress.finished()
4198
def _check_file_version_parents(self, texts, progress_bar):
4199
"""See check_file_version_parents."""
4201
self.file_ids = set([file_id for file_id, _ in
4202
self.text_index.iterkeys()])
4203
# text keys is now grouped by file_id
4204
n_versions = len(self.text_index)
4205
progress_bar.update('loading text store', 0, n_versions)
4206
parent_map = self.repository.texts.get_parent_map(self.text_index)
4207
# On unlistable transports this could well be empty/error...
4208
text_keys = self.repository.texts.keys()
4209
unused_keys = frozenset(text_keys) - set(self.text_index)
4210
for num, key in enumerate(self.text_index.iterkeys()):
4211
progress_bar.update('checking text graph', num, n_versions)
4212
correct_parents = self.calculate_file_version_parents(key)
4214
knit_parents = parent_map[key]
4215
except errors.RevisionNotPresent:
4218
if correct_parents != knit_parents:
4219
wrong_parents[key] = (knit_parents, correct_parents)
4220
return wrong_parents, unused_keys
4223
def _old_get_graph(repository, revision_id):
4224
"""DO NOT USE. That is all. I'm serious."""
4225
graph = repository.get_graph()
4226
revision_graph = dict(((key, value) for key, value in
4227
graph.iter_ancestry([revision_id]) if value is not None))
4228
return _strip_NULL_ghosts(revision_graph)
4231
def _strip_NULL_ghosts(revision_graph):
4232
"""Also don't use this. more compatibility code for unmigrated clients."""
4233
# Filter ghosts, and null:
4234
if _mod_revision.NULL_REVISION in revision_graph:
4235
del revision_graph[_mod_revision.NULL_REVISION]
4236
for key, parents in revision_graph.items():
4237
revision_graph[key] = tuple(parent for parent in parents if parent
4239
return revision_graph
4242
class StreamSink(object):
4243
"""An object that can insert a stream into a repository.
4245
This interface handles the complexity of reserialising inventories and
4246
revisions from different formats, and allows unidirectional insertion into
4247
stacked repositories without looking for the missing basis parents
4251
def __init__(self, target_repo):
4252
self.target_repo = target_repo
4254
def insert_stream(self, stream, src_format, resume_tokens):
4255
"""Insert a stream's content into the target repository.
4257
:param src_format: a bzr repository format.
4259
:return: a list of resume tokens and an iterable of keys additional
4260
items required before the insertion can be completed.
4262
self.target_repo.lock_write()
4265
self.target_repo.resume_write_group(resume_tokens)
4268
self.target_repo.start_write_group()
4271
# locked_insert_stream performs a commit|suspend.
4272
return self._locked_insert_stream(stream, src_format, is_resume)
4274
self.target_repo.abort_write_group(suppress_errors=True)
4277
self.target_repo.unlock()
4279
def _locked_insert_stream(self, stream, src_format, is_resume):
4280
to_serializer = self.target_repo._format._serializer
4281
src_serializer = src_format._serializer
4283
if to_serializer == src_serializer:
4284
# If serializers match and the target is a pack repository, set the
4285
# write cache size on the new pack. This avoids poor performance
4286
# on transports where append is unbuffered (such as
4287
# RemoteTransport). This is safe to do because nothing should read
4288
# back from the target repository while a stream with matching
4289
# serialization is being inserted.
4290
# The exception is that a delta record from the source that should
4291
# be a fulltext may need to be expanded by the target (see
4292
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4293
# explicitly flush any buffered writes first in that rare case.
4295
new_pack = self.target_repo._pack_collection._new_pack
4296
except AttributeError:
4297
# Not a pack repository
4300
new_pack.set_write_cache_size(1024*1024)
4301
for substream_type, substream in stream:
4302
if 'stream' in debug.debug_flags:
4303
mutter('inserting substream: %s', substream_type)
4304
if substream_type == 'texts':
4305
self.target_repo.texts.insert_record_stream(substream)
4306
elif substream_type == 'inventories':
4307
if src_serializer == to_serializer:
4308
self.target_repo.inventories.insert_record_stream(
4311
self._extract_and_insert_inventories(
4312
substream, src_serializer)
4313
elif substream_type == 'inventory-deltas':
4314
self._extract_and_insert_inventory_deltas(
4315
substream, src_serializer)
4316
elif substream_type == 'chk_bytes':
4317
# XXX: This doesn't support conversions, as it assumes the
4318
# conversion was done in the fetch code.
4319
self.target_repo.chk_bytes.insert_record_stream(substream)
4320
elif substream_type == 'revisions':
4321
# This may fallback to extract-and-insert more often than
4322
# required if the serializers are different only in terms of
4324
if src_serializer == to_serializer:
4325
self.target_repo.revisions.insert_record_stream(
4328
self._extract_and_insert_revisions(substream,
4330
elif substream_type == 'signatures':
4331
self.target_repo.signatures.insert_record_stream(substream)
4333
raise AssertionError('kaboom! %s' % (substream_type,))
4334
# Done inserting data, and the missing_keys calculations will try to
4335
# read back from the inserted data, so flush the writes to the new pack
4336
# (if this is pack format).
4337
if new_pack is not None:
4338
new_pack._write_data('', flush=True)
4339
# Find all the new revisions (including ones from resume_tokens)
4340
missing_keys = self.target_repo.get_missing_parent_inventories(
4341
check_for_missing_texts=is_resume)
4343
for prefix, versioned_file in (
4344
('texts', self.target_repo.texts),
4345
('inventories', self.target_repo.inventories),
4346
('revisions', self.target_repo.revisions),
4347
('signatures', self.target_repo.signatures),
4348
('chk_bytes', self.target_repo.chk_bytes),
4350
if versioned_file is None:
4352
# TODO: key is often going to be a StaticTuple object
4353
# I don't believe we can define a method by which
4354
# (prefix,) + StaticTuple will work, though we could
4355
# define a StaticTuple.sq_concat that would allow you to
4356
# pass in either a tuple or a StaticTuple as the second
4357
# object, so instead we could have:
4358
# StaticTuple(prefix) + key here...
4359
missing_keys.update((prefix,) + key for key in
4360
versioned_file.get_missing_compression_parent_keys())
4361
except NotImplementedError:
4362
# cannot even attempt suspending, and missing would have failed
4363
# during stream insertion.
4364
missing_keys = set()
4367
# suspend the write group and tell the caller what we is
4368
# missing. We know we can suspend or else we would not have
4369
# entered this code path. (All repositories that can handle
4370
# missing keys can handle suspending a write group).
4371
write_group_tokens = self.target_repo.suspend_write_group()
4372
return write_group_tokens, missing_keys
4373
hint = self.target_repo.commit_write_group()
4374
if (to_serializer != src_serializer and
4375
self.target_repo._format.pack_compresses):
4376
self.target_repo.pack(hint=hint)
4379
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4380
target_rich_root = self.target_repo._format.rich_root_data
4381
target_tree_refs = self.target_repo._format.supports_tree_reference
4382
for record in substream:
4383
# Insert the delta directly
4384
inventory_delta_bytes = record.get_bytes_as('fulltext')
4385
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4387
parse_result = deserialiser.parse_text_bytes(
4388
inventory_delta_bytes)
4389
except inventory_delta.IncompatibleInventoryDelta, err:
4390
trace.mutter("Incompatible delta: %s", err.msg)
4391
raise errors.IncompatibleRevision(self.target_repo._format)
4392
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4393
revision_id = new_id
4394
parents = [key[0] for key in record.parents]
4395
self.target_repo.add_inventory_by_delta(
4396
basis_id, inv_delta, revision_id, parents)
4398
def _extract_and_insert_inventories(self, substream, serializer,
4400
"""Generate a new inventory versionedfile in target, converting data.
4402
The inventory is retrieved from the source, (deserializing it), and
4403
stored in the target (reserializing it in a different format).
4405
target_rich_root = self.target_repo._format.rich_root_data
4406
target_tree_refs = self.target_repo._format.supports_tree_reference
4407
for record in substream:
4408
# It's not a delta, so it must be a fulltext in the source
4409
# serializer's format.
4410
bytes = record.get_bytes_as('fulltext')
4411
revision_id = record.key[0]
4412
inv = serializer.read_inventory_from_string(bytes, revision_id)
4413
parents = [key[0] for key in record.parents]
4414
self.target_repo.add_inventory(revision_id, inv, parents)
4415
# No need to keep holding this full inv in memory when the rest of
4416
# the substream is likely to be all deltas.
4419
def _extract_and_insert_revisions(self, substream, serializer):
4420
for record in substream:
4421
bytes = record.get_bytes_as('fulltext')
4422
revision_id = record.key[0]
4423
rev = serializer.read_revision_from_string(bytes)
4424
if rev.revision_id != revision_id:
4425
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4426
self.target_repo.add_revision(revision_id, rev)
4429
if self.target_repo._format._fetch_reconcile:
4430
self.target_repo.reconcile()
4433
class StreamSource(object):
4434
"""A source of a stream for fetching between repositories."""
4436
def __init__(self, from_repository, to_format):
4437
"""Create a StreamSource streaming from from_repository."""
4438
self.from_repository = from_repository
4439
self.to_format = to_format
4441
def delta_on_metadata(self):
4442
"""Return True if delta's are permitted on metadata streams.
4444
That is on revisions and signatures.
4446
src_serializer = self.from_repository._format._serializer
4447
target_serializer = self.to_format._serializer
4448
return (self.to_format._fetch_uses_deltas and
4449
src_serializer == target_serializer)
4451
def _fetch_revision_texts(self, revs):
4452
# fetch signatures first and then the revision texts
4453
# may need to be a InterRevisionStore call here.
4454
from_sf = self.from_repository.signatures
4455
# A missing signature is just skipped.
4456
keys = [(rev_id,) for rev_id in revs]
4457
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4459
self.to_format._fetch_order,
4460
not self.to_format._fetch_uses_deltas))
4461
# If a revision has a delta, this is actually expanded inside the
4462
# insert_record_stream code now, which is an alternate fix for
4464
from_rf = self.from_repository.revisions
4465
revisions = from_rf.get_record_stream(
4467
self.to_format._fetch_order,
4468
not self.delta_on_metadata())
4469
return [('signatures', signatures), ('revisions', revisions)]
4471
def _generate_root_texts(self, revs):
4472
"""This will be called by get_stream between fetching weave texts and
4473
fetching the inventory weave.
4475
if self._rich_root_upgrade():
4476
return _mod_fetch.Inter1and2Helper(
4477
self.from_repository).generate_root_texts(revs)
4481
def get_stream(self, search):
4483
revs = search.get_keys()
4484
graph = self.from_repository.get_graph()
4485
revs = tsort.topo_sort(graph.get_parent_map(revs))
4486
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4488
for knit_kind, file_id, revisions in data_to_fetch:
4489
if knit_kind != phase:
4491
# Make a new progress bar for this phase
4492
if knit_kind == "file":
4493
# Accumulate file texts
4494
text_keys.extend([(file_id, revision) for revision in
4496
elif knit_kind == "inventory":
4497
# Now copy the file texts.
4498
from_texts = self.from_repository.texts
4499
yield ('texts', from_texts.get_record_stream(
4500
text_keys, self.to_format._fetch_order,
4501
not self.to_format._fetch_uses_deltas))
4502
# Cause an error if a text occurs after we have done the
4505
# Before we process the inventory we generate the root
4506
# texts (if necessary) so that the inventories references
4508
for _ in self._generate_root_texts(revs):
4510
# we fetch only the referenced inventories because we do not
4511
# know for unselected inventories whether all their required
4512
# texts are present in the other repository - it could be
4514
for info in self._get_inventory_stream(revs):
4516
elif knit_kind == "signatures":
4517
# Nothing to do here; this will be taken care of when
4518
# _fetch_revision_texts happens.
4520
elif knit_kind == "revisions":
4521
for record in self._fetch_revision_texts(revs):
4524
raise AssertionError("Unknown knit kind %r" % knit_kind)
4526
def get_stream_for_missing_keys(self, missing_keys):
4527
# missing keys can only occur when we are byte copying and not
4528
# translating (because translation means we don't send
4529
# unreconstructable deltas ever).
4531
keys['texts'] = set()
4532
keys['revisions'] = set()
4533
keys['inventories'] = set()
4534
keys['chk_bytes'] = set()
4535
keys['signatures'] = set()
4536
for key in missing_keys:
4537
keys[key[0]].add(key[1:])
4538
if len(keys['revisions']):
4539
# If we allowed copying revisions at this point, we could end up
4540
# copying a revision without copying its required texts: a
4541
# violation of the requirements for repository integrity.
4542
raise AssertionError(
4543
'cannot copy revisions to fill in missing deltas %s' % (
4544
keys['revisions'],))
4545
for substream_kind, keys in keys.iteritems():
4546
vf = getattr(self.from_repository, substream_kind)
4547
if vf is None and keys:
4548
raise AssertionError(
4549
"cannot fill in keys for a versioned file we don't"
4550
" have: %s needs %s" % (substream_kind, keys))
4552
# No need to stream something we don't have
4554
if substream_kind == 'inventories':
4555
# Some missing keys are genuinely ghosts, filter those out.
4556
present = self.from_repository.inventories.get_parent_map(keys)
4557
revs = [key[0] for key in present]
4558
# Get the inventory stream more-or-less as we do for the
4559
# original stream; there's no reason to assume that records
4560
# direct from the source will be suitable for the sink. (Think
4561
# e.g. 2a -> 1.9-rich-root).
4562
for info in self._get_inventory_stream(revs, missing=True):
4566
# Ask for full texts always so that we don't need more round trips
4567
# after this stream.
4568
# Some of the missing keys are genuinely ghosts, so filter absent
4569
# records. The Sink is responsible for doing another check to
4570
# ensure that ghosts don't introduce missing data for future
4572
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4573
self.to_format._fetch_order, True))
4574
yield substream_kind, stream
4576
def inventory_fetch_order(self):
4577
if self._rich_root_upgrade():
4578
return 'topological'
4580
return self.to_format._fetch_order
4582
def _rich_root_upgrade(self):
4583
return (not self.from_repository._format.rich_root_data and
4584
self.to_format.rich_root_data)
4586
def _get_inventory_stream(self, revision_ids, missing=False):
4587
from_format = self.from_repository._format
4588
if (from_format.supports_chks and self.to_format.supports_chks and
4589
from_format.network_name() == self.to_format.network_name()):
4590
raise AssertionError(
4591
"this case should be handled by GroupCHKStreamSource")
4592
elif 'forceinvdeltas' in debug.debug_flags:
4593
return self._get_convertable_inventory_stream(revision_ids,
4594
delta_versus_null=missing)
4595
elif from_format.network_name() == self.to_format.network_name():
4597
return self._get_simple_inventory_stream(revision_ids,
4599
elif (not from_format.supports_chks and not self.to_format.supports_chks
4600
and from_format._serializer == self.to_format._serializer):
4601
# Essentially the same format.
4602
return self._get_simple_inventory_stream(revision_ids,
4605
# Any time we switch serializations, we want to use an
4606
# inventory-delta based approach.
4607
return self._get_convertable_inventory_stream(revision_ids,
4608
delta_versus_null=missing)
4610
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4611
# NB: This currently reopens the inventory weave in source;
4612
# using a single stream interface instead would avoid this.
4613
from_weave = self.from_repository.inventories
4615
delta_closure = True
4617
delta_closure = not self.delta_on_metadata()
4618
yield ('inventories', from_weave.get_record_stream(
4619
[(rev_id,) for rev_id in revision_ids],
4620
self.inventory_fetch_order(), delta_closure))
4622
def _get_convertable_inventory_stream(self, revision_ids,
4623
delta_versus_null=False):
4624
# The two formats are sufficiently different that there is no fast
4625
# path, so we need to send just inventorydeltas, which any
4626
# sufficiently modern client can insert into any repository.
4627
# The StreamSink code expects to be able to
4628
# convert on the target, so we need to put bytes-on-the-wire that can
4629
# be converted. That means inventory deltas (if the remote is <1.19,
4630
# RemoteStreamSink will fallback to VFS to insert the deltas).
4631
yield ('inventory-deltas',
4632
self._stream_invs_as_deltas(revision_ids,
4633
delta_versus_null=delta_versus_null))
4635
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4636
"""Return a stream of inventory-deltas for the given rev ids.
4638
:param revision_ids: The list of inventories to transmit
4639
:param delta_versus_null: Don't try to find a minimal delta for this
4640
entry, instead compute the delta versus the NULL_REVISION. This
4641
effectively streams a complete inventory. Used for stuff like
4642
filling in missing parents, etc.
4644
from_repo = self.from_repository
4645
revision_keys = [(rev_id,) for rev_id in revision_ids]
4646
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4647
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4649
inventories = self.from_repository.iter_inventories(
4650
revision_ids, 'topological')
4651
format = from_repo._format
4652
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4653
inventory_cache = lru_cache.LRUCache(50)
4654
null_inventory = from_repo.revision_tree(
4655
_mod_revision.NULL_REVISION).inventory
4656
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4657
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4658
# repo back into a non-rich-root repo ought to be allowed)
4659
serializer = inventory_delta.InventoryDeltaSerializer(
4660
versioned_root=format.rich_root_data,
4661
tree_references=format.supports_tree_reference)
4662
for inv in inventories:
4663
key = (inv.revision_id,)
4664
parent_keys = parent_map.get(key, ())
4666
if not delta_versus_null and parent_keys:
4667
# The caller did not ask for complete inventories and we have
4668
# some parents that we can delta against. Make a delta against
4669
# each parent so that we can find the smallest.
4670
parent_ids = [parent_key[0] for parent_key in parent_keys]
4671
for parent_id in parent_ids:
4672
if parent_id not in invs_sent_so_far:
4673
# We don't know that the remote side has this basis, so
4676
if parent_id == _mod_revision.NULL_REVISION:
4677
parent_inv = null_inventory
4679
parent_inv = inventory_cache.get(parent_id, None)
4680
if parent_inv is None:
4681
parent_inv = from_repo.get_inventory(parent_id)
4682
candidate_delta = inv._make_delta(parent_inv)
4683
if (delta is None or
4684
len(delta) > len(candidate_delta)):
4685
delta = candidate_delta
4686
basis_id = parent_id
4688
# Either none of the parents ended up being suitable, or we
4689
# were asked to delta against NULL
4690
basis_id = _mod_revision.NULL_REVISION
4691
delta = inv._make_delta(null_inventory)
4692
invs_sent_so_far.add(inv.revision_id)
4693
inventory_cache[inv.revision_id] = inv
4694
delta_serialized = ''.join(
4695
serializer.delta_to_lines(basis_id, key[-1], delta))
4696
yield versionedfile.FulltextContentFactory(
4697
key, parent_keys, None, delta_serialized)
4700
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4701
stop_revision=None):
4702
"""Extend the partial history to include a given index
4704
If a stop_index is supplied, stop when that index has been reached.
4705
If a stop_revision is supplied, stop when that revision is
4706
encountered. Otherwise, stop when the beginning of history is
4709
:param stop_index: The index which should be present. When it is
4710
present, history extension will stop.
4711
:param stop_revision: The revision id which should be present. When
4712
it is encountered, history extension will stop.
4714
start_revision = partial_history_cache[-1]
4715
iterator = repo.iter_reverse_revision_history(start_revision)
4717
#skip the last revision in the list
4720
if (stop_index is not None and
4721
len(partial_history_cache) > stop_index):
4723
if partial_history_cache[-1] == stop_revision:
4725
revision_id = iterator.next()
4726
partial_history_cache.append(revision_id)
4727
except StopIteration: