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# Copyright (C) 2005-2010 Canonical Ltd
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# Copyright (C) 2005, 2006 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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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 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 cStringIO import StringIO
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from unittest import TestSuite
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revision as _mod_revision,
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from bzrlib.bundle import serializer
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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 import bzrdir, check, delta, gpg, errors, xml5, ui, transactions, osutils
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import InvalidRevisionId
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from bzrlib.graph import Graph
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from bzrlib.inter import InterObject
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from bzrlib.inventory import Inventory
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from bzrlib.knit import KnitVersionedFile, KnitPlainFactory
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.lockdir import LockDir
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from bzrlib.osutils import (safe_unicode, rand_bytes, compact_date,
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from bzrlib.revision import NULL_REVISION, Revision
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from bzrlib.store.versioned import VersionedFileStore, WeaveStore
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from bzrlib.store.text import TextStore
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from bzrlib.symbol_versioning import (deprecated_method,
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from bzrlib.trace import mutter, note
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from bzrlib.tree import RevisionTree, EmptyTree
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from bzrlib.tsort import topo_sort
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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.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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# 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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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))
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except errors.NoSuchRevision:
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# one or more ghosts, slow path.
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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(
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_mod_revision.NULL_REVISION))
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# The basis inventory from a repository
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basis_inv = revtrees[0].inventory
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basis_inv = self.repository.revision_tree(
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_mod_revision.NULL_REVISION).inventory
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if len(self.parents) > 0:
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if basis_revision_id != self.parents[0] and not ghost_basis:
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"arbitrary basis parents not yet supported with merges")
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for revtree in revtrees[1:]:
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for change in revtree.inventory._make_delta(basis_inv):
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if change[1] is None:
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# Not present in this parent.
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if change[2] not in merged_ids:
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if change[0] is not None:
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basis_entry = basis_inv[change[2]]
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merged_ids[change[2]] = [
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basis_entry.revision,
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parent_entries[change[2]] = {
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basis_entry.revision:basis_entry,
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change[3].revision:change[3],
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merged_ids[change[2]] = [change[3].revision]
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parent_entries[change[2]] = {change[3].revision:change[3]}
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merged_ids[change[2]].append(change[3].revision)
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parent_entries[change[2]][change[3].revision] = change[3]
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# Setup the changes from the tree:
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# changes maps file_id -> (change, [parent revision_ids])
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for change in iter_changes:
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# This probably looks up in basis_inv way to much.
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if change[1][0] is not None:
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head_candidate = [basis_inv[change[0]].revision]
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changes[change[0]] = change, merged_ids.get(change[0],
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unchanged_merged = set(merged_ids) - set(changes)
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# Extend the changes dict with synthetic changes to record merges of
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for file_id in unchanged_merged:
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# 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
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# 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.
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# NB:XXX: We are reconstructing path information we had, this
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# should be preserved instead.
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# inv delta change: (file_id, (path_in_source, path_in_target),
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# changed_content, versioned, parent, name, kind,
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basis_entry = basis_inv[file_id]
667
except errors.NoSuchId:
668
# a change from basis->some_parents but file_id isn't in basis
669
# so was new in the merge, which means it must have changed
670
# from basis -> current, and as it hasn't the add was reverted
671
# by the user. So we discard this change.
675
(basis_inv.id2path(file_id), tree.id2path(file_id)),
677
(basis_entry.parent_id, basis_entry.parent_id),
678
(basis_entry.name, basis_entry.name),
679
(basis_entry.kind, basis_entry.kind),
680
(basis_entry.executable, basis_entry.executable))
681
changes[file_id] = (change, merged_ids[file_id])
682
# changes contains tuples with the change and a set of inventory
683
# candidates for the file.
685
# old_path, new_path, file_id, new_inventory_entry
686
seen_root = False # Is the root in the basis delta?
687
inv_delta = self._basis_delta
688
modified_rev = self._new_revision_id
689
for change, head_candidates in changes.values():
690
if change[3][1]: # versioned in target.
691
# Several things may be happening here:
692
# We may have a fork in the per-file graph
693
# - record a change with the content from tree
694
# We may have a change against < all trees
695
# - carry over the tree that hasn't changed
696
# We may have a change against all trees
697
# - record the change with the content from tree
700
entry = _entry_factory[kind](file_id, change[5][1],
702
head_set = self._heads(change[0], set(head_candidates))
705
for head_candidate in head_candidates:
706
if head_candidate in head_set:
707
heads.append(head_candidate)
708
head_set.remove(head_candidate)
711
# Could be a carry-over situation:
712
parent_entry_revs = parent_entries.get(file_id, None)
713
if parent_entry_revs:
714
parent_entry = parent_entry_revs.get(heads[0], None)
717
if parent_entry is None:
718
# The parent iter_changes was called against is the one
719
# that is the per-file head, so any change is relevant
720
# iter_changes is valid.
721
carry_over_possible = False
723
# could be a carry over situation
724
# A change against the basis may just indicate a merge,
725
# we need to check the content against the source of the
726
# merge to determine if it was changed after the merge
728
if (parent_entry.kind != entry.kind or
729
parent_entry.parent_id != entry.parent_id or
730
parent_entry.name != entry.name):
731
# Metadata common to all entries has changed
732
# against per-file parent
733
carry_over_possible = False
735
carry_over_possible = True
736
# per-type checks for changes against the parent_entry
739
# Cannot be a carry-over situation
740
carry_over_possible = False
741
# Populate the entry in the delta
743
# XXX: There is still a small race here: If someone reverts the content of a file
744
# after iter_changes examines and decides it has changed,
745
# we will unconditionally record a new version even if some
746
# other process reverts it while commit is running (with
747
# the revert happening after iter_changes did it's
750
entry.executable = True
752
entry.executable = False
753
if (carry_over_possible and
754
parent_entry.executable == entry.executable):
755
# Check the file length, content hash after reading
757
nostore_sha = parent_entry.text_sha1
760
file_obj, stat_value = tree.get_file_with_stat(file_id, change[1][1])
762
text = file_obj.read()
766
entry.text_sha1, entry.text_size = self._add_text_to_weave(
767
file_id, text, heads, nostore_sha)
768
yield file_id, change[1][1], (entry.text_sha1, stat_value)
769
except errors.ExistingContent:
770
# No content change against a carry_over parent
771
# Perhaps this should also yield a fs hash update?
773
entry.text_size = parent_entry.text_size
774
entry.text_sha1 = parent_entry.text_sha1
775
elif kind == 'symlink':
777
entry.symlink_target = tree.get_symlink_target(file_id)
778
if (carry_over_possible and
779
parent_entry.symlink_target == entry.symlink_target):
782
self._add_text_to_weave(change[0], '', heads, None)
783
elif kind == 'directory':
784
if carry_over_possible:
787
# Nothing to set on the entry.
788
# XXX: split into the Root and nonRoot versions.
789
if change[1][1] != '' or self.repository.supports_rich_root():
790
self._add_text_to_weave(change[0], '', heads, None)
791
elif kind == 'tree-reference':
792
if not self.repository._format.supports_tree_reference:
793
# This isn't quite sane as an error, but we shouldn't
794
# ever see this code path in practice: tree's don't
795
# permit references when the repo doesn't support tree
797
raise errors.UnsupportedOperation(tree.add_reference,
799
reference_revision = tree.get_reference_revision(change[0])
800
entry.reference_revision = reference_revision
801
if (carry_over_possible and
802
parent_entry.reference_revision == reference_revision):
805
self._add_text_to_weave(change[0], '', heads, None)
807
raise AssertionError('unknown kind %r' % kind)
809
entry.revision = modified_rev
811
entry.revision = parent_entry.revision
814
new_path = change[1][1]
815
inv_delta.append((change[1][0], new_path, change[0], entry))
818
self.new_inventory = None
820
# This should perhaps be guarded by a check that the basis we
821
# commit against is the basis for the commit and if not do a delta
823
self._any_changes = True
825
# housekeeping root entry changes do not affect no-change commits.
826
self._require_root_change(tree)
827
self.basis_delta_revision = basis_revision_id
829
def _add_text_to_weave(self, file_id, new_text, parents, nostore_sha):
830
parent_keys = tuple([(file_id, parent) for parent in parents])
831
return self.repository.texts._add_text(
832
(file_id, self._new_revision_id), parent_keys, new_text,
833
nostore_sha=nostore_sha, random_id=self.random_revid)[0:2]
836
class RootCommitBuilder(CommitBuilder):
837
"""This commitbuilder actually records the root id"""
839
# the root entry gets versioned properly by this builder.
840
_versioned_root = True
842
def _check_root(self, ie, parent_invs, tree):
843
"""Helper for record_entry_contents.
845
:param ie: An entry being added.
846
:param parent_invs: The inventories of the parent revisions of the
848
:param tree: The tree that is being committed.
851
def _require_root_change(self, tree):
852
"""Enforce an appropriate root object change.
854
This is called once when record_iter_changes is called, if and only if
855
the root was not in the delta calculated by record_iter_changes.
857
:param tree: The tree which is being committed.
859
# versioned roots do not change unless the tree found a change.
862
######################################################################
866
class Repository(_RelockDebugMixin):
45
from bzrlib.tree import EmptyTree
46
from bzrlib.weave import WeaveFile
49
class Repository(object):
867
50
"""Repository holding history for one or more branches.
869
52
The repository holds and retrieves historical information including
870
53
revisions and file history. It's normally accessed only by the Branch,
871
54
which views a particular line of development through that history.
873
The Repository builds on top of some byte storage facilies (the revisions,
874
signatures, inventories, texts and chk_bytes attributes) and a Transport,
875
which respectively provide byte storage and a means to access the (possibly
56
The Repository builds on top of Stores and a Transport, which respectively
57
describe the disk data format and the way of accessing the (possibly
878
The byte storage facilities are addressed via tuples, which we refer to
879
as 'keys' throughout the code base. Revision_keys, inventory_keys and
880
signature_keys are all 1-tuples: (revision_id,). text_keys are two-tuples:
881
(file_id, revision_id). chk_bytes uses CHK keys - a 1-tuple with a single
882
byte string made up of a hash identifier and a hash value.
883
We use this interface because it allows low friction with the underlying
884
code that implements disk indices, network encoding and other parts of
887
:ivar revisions: A bzrlib.versionedfile.VersionedFiles instance containing
888
the serialised revisions for the repository. This can be used to obtain
889
revision graph information or to access raw serialised revisions.
890
The result of trying to insert data into the repository via this store
891
is undefined: it should be considered read-only except for implementors
893
:ivar signatures: A bzrlib.versionedfile.VersionedFiles instance containing
894
the serialised signatures for the repository. This can be used to
895
obtain access to raw serialised signatures. The result of trying to
896
insert data into the repository via this store is undefined: it should
897
be considered read-only except for implementors of repositories.
898
:ivar inventories: A bzrlib.versionedfile.VersionedFiles instance containing
899
the serialised inventories for the repository. This can be used to
900
obtain unserialised inventories. The result of trying to insert data
901
into the repository via this store is undefined: it should be
902
considered read-only except for implementors of repositories.
903
:ivar texts: A bzrlib.versionedfile.VersionedFiles instance containing the
904
texts of files and directories for the repository. This can be used to
905
obtain file texts or file graphs. Note that Repository.iter_file_bytes
906
is usually a better interface for accessing file texts.
907
The result of trying to insert data into the repository via this store
908
is undefined: it should be considered read-only except for implementors
910
:ivar chk_bytes: A bzrlib.versionedfile.VersionedFiles instance containing
911
any data the repository chooses to store or have indexed by its hash.
912
The result of trying to insert data into the repository via this store
913
is undefined: it should be considered read-only except for implementors
915
:ivar _transport: Transport for file access to repository, typically
916
pointing to .bzr/repository.
919
# What class to use for a CommitBuilder. Often its simpler to change this
920
# in a Repository class subclass rather than to override
921
# get_commit_builder.
922
_commit_builder_class = CommitBuilder
923
# The search regex used by xml based repositories to determine what things
924
# where changed in a single commit.
925
_file_ids_altered_regex = lazy_regex.lazy_compile(
926
r'file_id="(?P<file_id>[^"]+)"'
927
r'.* revision="(?P<revision_id>[^"]+)"'
930
def abort_write_group(self, suppress_errors=False):
931
"""Commit the contents accrued within the current write group.
933
:param suppress_errors: if true, abort_write_group will catch and log
934
unexpected errors that happen during the abort, rather than
935
allowing them to propagate. Defaults to False.
937
:seealso: start_write_group.
939
if self._write_group is not self.get_transaction():
940
# has an unlock or relock occured ?
943
'(suppressed) mismatched lock context and write group. %r, %r',
944
self._write_group, self.get_transaction())
946
raise errors.BzrError(
947
'mismatched lock context and write group. %r, %r' %
948
(self._write_group, self.get_transaction()))
950
self._abort_write_group()
951
except Exception, exc:
952
self._write_group = None
953
if not suppress_errors:
955
mutter('abort_write_group failed')
956
log_exception_quietly()
957
note('bzr: ERROR (ignored): %s', exc)
958
self._write_group = None
960
def _abort_write_group(self):
961
"""Template method for per-repository write group cleanup.
963
This is called during abort before the write group is considered to be
964
finished and should cleanup any internal state accrued during the write
965
group. There is no requirement that data handed to the repository be
966
*not* made available - this is not a rollback - but neither should any
967
attempt be made to ensure that data added is fully commited. Abort is
968
invoked when an error has occured so futher disk or network operations
969
may not be possible or may error and if possible should not be
973
def add_fallback_repository(self, repository):
974
"""Add a repository to use for looking up data not held locally.
976
:param repository: A repository.
978
if not self._format.supports_external_lookups:
979
raise errors.UnstackableRepositoryFormat(self._format, self.base)
981
# This repository will call fallback.unlock() when we transition to
982
# the unlocked state, so we make sure to increment the lock count
983
repository.lock_read()
984
self._check_fallback_repository(repository)
985
self._fallback_repositories.append(repository)
986
self.texts.add_fallback_versioned_files(repository.texts)
987
self.inventories.add_fallback_versioned_files(repository.inventories)
988
self.revisions.add_fallback_versioned_files(repository.revisions)
989
self.signatures.add_fallback_versioned_files(repository.signatures)
990
if self.chk_bytes is not None:
991
self.chk_bytes.add_fallback_versioned_files(repository.chk_bytes)
993
def _check_fallback_repository(self, repository):
994
"""Check that this repository can fallback to repository safely.
996
Raise an error if not.
998
:param repository: A repository to fallback to.
1000
return InterRepository._assert_same_model(self, repository)
1002
def add_inventory(self, revision_id, inv, parents):
1003
"""Add the inventory inv to the repository as revision_id.
1005
:param parents: The revision ids of the parents that revision_id
62
def add_inventory(self, revid, inv, parents):
63
"""Add the inventory inv to the repository as revid.
65
:param parents: The revision ids of the parents that revid
1006
66
is known to have and are in the repository already.
1008
:returns: The validator(which is a sha1 digest, though what is sha'd is
1009
repository format specific) of the serialized inventory.
1011
if not self.is_in_write_group():
1012
raise AssertionError("%r not in write group" % (self,))
1013
_mod_revision.check_not_reserved_id(revision_id)
1014
if not (inv.revision_id is None or inv.revision_id == revision_id):
1015
raise AssertionError(
1016
"Mismatch between inventory revision"
1017
" id and insertion revid (%r, %r)"
1018
% (inv.revision_id, revision_id))
1019
if inv.root is None:
1020
raise AssertionError()
1021
return self._add_inventory_checked(revision_id, inv, parents)
1023
def _add_inventory_checked(self, revision_id, inv, parents):
1024
"""Add inv to the repository after checking the inputs.
1026
This function can be overridden to allow different inventory styles.
1028
:seealso: add_inventory, for the contract.
1030
inv_lines = self._serializer.write_inventory_to_lines(inv)
1031
return self._inventory_add_lines(revision_id, parents,
1032
inv_lines, check_content=False)
1034
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1035
parents, basis_inv=None, propagate_caches=False):
1036
"""Add a new inventory expressed as a delta against another revision.
1038
See the inventory developers documentation for the theory behind
1041
:param basis_revision_id: The inventory id the delta was created
1042
against. (This does not have to be a direct parent.)
1043
:param delta: The inventory delta (see Inventory.apply_delta for
1045
:param new_revision_id: The revision id that the inventory is being
1047
:param parents: The revision ids of the parents that revision_id is
1048
known to have and are in the repository already. These are supplied
1049
for repositories that depend on the inventory graph for revision
1050
graph access, as well as for those that pun ancestry with delta
1052
:param basis_inv: The basis inventory if it is already known,
1054
:param propagate_caches: If True, the caches for this inventory are
1055
copied to and updated for the result if possible.
1057
:returns: (validator, new_inv)
1058
The validator(which is a sha1 digest, though what is sha'd is
1059
repository format specific) of the serialized inventory, and the
1060
resulting inventory.
1062
if not self.is_in_write_group():
1063
raise AssertionError("%r not in write group" % (self,))
1064
_mod_revision.check_not_reserved_id(new_revision_id)
1065
basis_tree = self.revision_tree(basis_revision_id)
1066
basis_tree.lock_read()
1068
# Note that this mutates the inventory of basis_tree, which not all
1069
# inventory implementations may support: A better idiom would be to
1070
# return a new inventory, but as there is no revision tree cache in
1071
# repository this is safe for now - RBC 20081013
1072
if basis_inv is None:
1073
basis_inv = basis_tree.inventory
1074
basis_inv.apply_delta(delta)
1075
basis_inv.revision_id = new_revision_id
1076
return (self.add_inventory(new_revision_id, basis_inv, parents),
1081
def _inventory_add_lines(self, revision_id, parents, lines,
1082
check_content=True):
1083
"""Store lines in inv_vf and return the sha1 of the inventory."""
1084
parents = [(parent,) for parent in parents]
1085
result = self.inventories.add_lines((revision_id,), parents, lines,
1086
check_content=check_content)[0]
1087
self.inventories._access.flush()
1090
def add_revision(self, revision_id, rev, inv=None, config=None):
1091
"""Add rev to the revision store as revision_id.
1093
:param revision_id: the revision id to use.
68
returns the sha1 of the serialized inventory.
70
assert inv.revision_id is None or inv.revision_id == revid, \
71
"Mismatch between inventory revision" \
72
" id and insertion revid (%r, %r)" % (inv.revision_id, revid)
73
inv_text = xml5.serializer_v5.write_inventory_to_string(inv)
74
inv_sha1 = osutils.sha_string(inv_text)
75
inv_vf = self.control_weaves.get_weave('inventory',
76
self.get_transaction())
77
self._inventory_add_lines(inv_vf, revid, parents, osutils.split_lines(inv_text))
80
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
82
for parent in parents:
84
final_parents.append(parent)
86
inv_vf.add_lines(revid, final_parents, lines)
89
def add_revision(self, rev_id, rev, inv=None, config=None):
90
"""Add rev to the revision store as rev_id.
92
:param rev_id: the revision id to use.
1094
93
:param rev: The revision object.
1095
94
:param inv: The inventory for the revision. if None, it will be looked
1096
95
up in the inventory storer
1714
256
:param revprops: Optional dictionary of revision properties.
1715
257
:param revision_id: Optional revision id.
1717
if self._fallback_repositories:
1718
raise errors.BzrError("Cannot commit from a lightweight checkout "
1719
"to a stacked branch. See "
1720
"https://bugs.launchpad.net/bzr/+bug/375013 for details.")
1721
result = self._commit_builder_class(self, parents, config,
1722
timestamp, timezone, committer, revprops, revision_id)
1723
self.start_write_group()
259
return CommitBuilder(self, parents, config, timestamp, timezone,
260
committer, revprops, revision_id)
1726
@only_raises(errors.LockNotHeld, errors.LockBroken)
1727
262
def unlock(self):
1728
if (self.control_files._lock_count == 1 and
1729
self.control_files._lock_mode == 'w'):
1730
if self._write_group is not None:
1731
self.abort_write_group()
1732
self.control_files.unlock()
1733
raise errors.BzrError(
1734
'Must end write groups before releasing write locks.')
1735
263
self.control_files.unlock()
1736
if self.control_files._lock_count == 0:
1737
self._inventory_entry_cache.clear()
1738
for repo in self._fallback_repositories:
1741
265
@needs_read_lock
1742
def clone(self, a_bzrdir, revision_id=None):
266
def clone(self, a_bzrdir, revision_id=None, basis=None):
1743
267
"""Clone this repository into a_bzrdir using the current format.
1745
269
Currently no check is made that the format of this repository and
1746
270
the bzrdir format are compatible. FIXME RBC 20060201.
1748
:return: The newly created destination repository.
1750
# TODO: deprecate after 0.16; cloning this with all its settings is
1751
# probably not very useful -- mbp 20070423
1752
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
1753
self.copy_content_into(dest_repo, revision_id)
1756
def start_write_group(self):
1757
"""Start a write group in the repository.
1759
Write groups are used by repositories which do not have a 1:1 mapping
1760
between file ids and backend store to manage the insertion of data from
1761
both fetch and commit operations.
1763
A write lock is required around the start_write_group/commit_write_group
1764
for the support of lock-requiring repository formats.
1766
One can only insert data into a repository inside a write group.
1770
if not self.is_write_locked():
1771
raise errors.NotWriteLocked(self)
1772
if self._write_group:
1773
raise errors.BzrError('already in a write group')
1774
self._start_write_group()
1775
# so we can detect unlock/relock - the write group is now entered.
1776
self._write_group = self.get_transaction()
1778
def _start_write_group(self):
1779
"""Template method for per-repository write group startup.
1781
This is called before the write group is considered to be
1786
def sprout(self, to_bzrdir, revision_id=None):
1787
"""Create a descendent repository for new development.
1789
Unlike clone, this does not copy the settings of the repository.
1791
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1792
dest_repo.fetch(self, revision_id=revision_id)
1795
def _create_sprouting_repo(self, a_bzrdir, shared):
1796
272
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1797
273
# use target default format.
1798
dest_repo = a_bzrdir.create_repository()
274
result = a_bzrdir.create_repository()
275
# FIXME RBC 20060209 split out the repository type to avoid this check ?
276
elif isinstance(a_bzrdir._format,
277
(bzrdir.BzrDirFormat4,
278
bzrdir.BzrDirFormat5,
279
bzrdir.BzrDirFormat6)):
280
result = a_bzrdir.open_repository()
1800
# Most control formats need the repository to be specifically
1801
# created, but on some old all-in-one formats it's not needed
1803
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1804
except errors.UninitializableFormat:
1805
dest_repo = a_bzrdir.open_repository()
1808
def _get_sink(self):
1809
"""Return a sink for streaming into this repository."""
1810
return StreamSink(self)
1812
def _get_source(self, to_format):
1813
"""Return a source for streaming from this repository."""
1814
return StreamSource(self, to_format)
282
result = self._format.initialize(a_bzrdir, shared=self.is_shared())
283
self.copy_content_into(result, revision_id, basis)
1816
286
@needs_read_lock
1817
287
def has_revision(self, revision_id):
1818
288
"""True if this repository has a copy of the revision."""
1819
return revision_id in self.has_revisions((revision_id,))
1822
def has_revisions(self, revision_ids):
1823
"""Probe to find out the presence of multiple revisions.
1825
:param revision_ids: An iterable of revision_ids.
1826
:return: A set of the revision_ids that were present.
1828
parent_map = self.revisions.get_parent_map(
1829
[(rev_id,) for rev_id in revision_ids])
1831
if _mod_revision.NULL_REVISION in revision_ids:
1832
result.add(_mod_revision.NULL_REVISION)
1833
result.update([key[0] for key in parent_map])
1837
def get_revision(self, revision_id):
1838
"""Return the Revision object for a named revision."""
1839
return self.get_revisions([revision_id])[0]
289
return self._revision_store.has_revision_id(revision_id,
290
self.get_transaction())
1841
292
@needs_read_lock
1842
293
def get_revision_reconcile(self, revision_id):
1843
294
"""'reconcile' helper routine that allows access to a revision always.
1845
296
This variant of get_revision does not cross check the weave graph
1846
297
against the revision one as get_revision does: but it should only
1847
298
be used by reconcile, or reconcile-alike commands that are correcting
1848
299
or testing the revision graph.
1850
return self._get_revisions([revision_id])[0]
301
if not revision_id or not isinstance(revision_id, basestring):
302
raise InvalidRevisionId(revision_id=revision_id, branch=self)
303
return self._revision_store.get_revisions([revision_id],
304
self.get_transaction())[0]
1852
305
@needs_read_lock
1853
306
def get_revisions(self, revision_ids):
1854
"""Get many revisions at once.
1856
Repositories that need to check data on every revision read should
1857
subclass this method.
1859
return self._get_revisions(revision_ids)
1862
def _get_revisions(self, revision_ids):
1863
"""Core work logic to get many revisions without sanity checks."""
1865
for revid, rev in self._iter_revisions(revision_ids):
1867
raise errors.NoSuchRevision(self, revid)
1869
return [revs[revid] for revid in revision_ids]
1871
def _iter_revisions(self, revision_ids):
1872
"""Iterate over revision objects.
1874
:param revision_ids: An iterable of revisions to examine. None may be
1875
passed to request all revisions known to the repository. Note that
1876
not all repositories can find unreferenced revisions; for those
1877
repositories only referenced ones will be returned.
1878
:return: An iterator of (revid, revision) tuples. Absent revisions (
1879
those asked for but not available) are returned as (revid, None).
1881
if revision_ids is None:
1882
revision_ids = self.all_revision_ids()
1884
for rev_id in revision_ids:
1885
if not rev_id or not isinstance(rev_id, basestring):
1886
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1887
keys = [(key,) for key in revision_ids]
1888
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1889
for record in stream:
1890
revid = record.key[0]
1891
if record.storage_kind == 'absent':
1894
text = record.get_bytes_as('fulltext')
1895
rev = self._serializer.read_revision_from_string(text)
1898
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
307
return self._revision_store.get_revisions(revision_ids,
308
self.get_transaction())
311
def get_revision_xml(self, revision_id):
312
rev = self.get_revision(revision_id)
314
# the current serializer..
315
self._revision_store._serializer.write_revision(rev, rev_tmp)
317
return rev_tmp.getvalue()
320
def get_revision(self, revision_id):
321
"""Return the Revision object for a named revision"""
322
r = self.get_revision_reconcile(revision_id)
323
# weave corruption can lead to absent revision markers that should be
325
# the following test is reasonably cheap (it needs a single weave read)
326
# and the weave is cached in read transactions. In write transactions
327
# it is not cached but typically we only read a small number of
328
# revisions. For knits when they are introduced we will probably want
329
# to ensure that caching write transactions are in use.
330
inv = self.get_inventory_weave()
331
self._check_revision_parents(r, inv)
335
def get_deltas_for_revisions(self, revisions):
1899
336
"""Produce a generator of revision deltas.
1901
338
Note that the input is a sequence of REVISIONS, not revision_ids.
1902
339
Trees will be held in memory until the generator exits.
1903
340
Each delta is relative to the revision's lefthand predecessor.
1905
:param specific_fileids: if not None, the result is filtered
1906
so that only those file-ids, their parents and their
1907
children are included.
1909
# Get the revision-ids of interest
1910
342
required_trees = set()
1911
343
for revision in revisions:
1912
344
required_trees.add(revision.revision_id)
1913
345
required_trees.update(revision.parent_ids[:1])
1915
# Get the matching filtered trees. Note that it's more
1916
# efficient to pass filtered trees to changes_from() rather
1917
# than doing the filtering afterwards. changes_from() could
1918
# arguably do the filtering itself but it's path-based, not
1919
# file-id based, so filtering before or afterwards is
1921
if specific_fileids is None:
1922
trees = dict((t.get_revision_id(), t) for
1923
t in self.revision_trees(required_trees))
1925
trees = dict((t.get_revision_id(), t) for
1926
t in self._filtered_revision_trees(required_trees,
1929
# Calculate the deltas
346
trees = dict((t.get_revision_id(), t) for
347
t in self.revision_trees(required_trees))
1930
348
for revision in revisions:
1931
349
if not revision.parent_ids:
1932
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
350
old_tree = EmptyTree()
1934
352
old_tree = trees[revision.parent_ids[0]]
1935
yield trees[revision.revision_id].changes_from(old_tree)
353
yield delta.compare_trees(old_tree, trees[revision.revision_id])
1937
355
@needs_read_lock
1938
def get_revision_delta(self, revision_id, specific_fileids=None):
356
def get_revision_delta(self, revision_id):
1939
357
"""Return the delta for one revision.
1941
359
The delta is relative to the left-hand predecessor of the
1944
:param specific_fileids: if not None, the result is filtered
1945
so that only those file-ids, their parents and their
1946
children are included.
1948
362
r = self.get_revision(revision_id)
1949
return list(self.get_deltas_for_revisions([r],
1950
specific_fileids=specific_fileids))[0]
363
return list(self.get_deltas_for_revisions([r]))[0]
365
def _check_revision_parents(self, revision, inventory):
366
"""Private to Repository and Fetch.
368
This checks the parentage of revision in an inventory weave for
369
consistency and is only applicable to inventory-weave-for-ancestry
370
using repository formats & fetchers.
372
weave_parents = inventory.get_parents(revision.revision_id)
373
weave_names = inventory.versions()
374
for parent_id in revision.parent_ids:
375
if parent_id in weave_names:
376
# this parent must not be a ghost.
377
if not parent_id in weave_parents:
379
raise errors.CorruptRepository(self)
1952
381
@needs_write_lock
1953
382
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1954
383
signature = gpg_strategy.sign(plaintext)
1955
self.add_signature_text(revision_id, signature)
1958
def add_signature_text(self, revision_id, signature):
1959
self.signatures.add_lines((revision_id,), (),
1960
osutils.split_lines(signature))
1962
def find_text_key_references(self):
1963
"""Find the text key references within the repository.
1965
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1966
to whether they were referred to by the inventory of the
1967
revision_id that they contain. The inventory texts from all present
1968
revision ids are assessed to generate this report.
1970
revision_keys = self.revisions.keys()
1971
w = self.inventories
1972
pb = ui.ui_factory.nested_progress_bar()
1974
return self._find_text_key_references_from_xml_inventory_lines(
1975
w.iter_lines_added_or_present_in_keys(revision_keys, pb=pb))
1979
def _find_text_key_references_from_xml_inventory_lines(self,
1981
"""Core routine for extracting references to texts from inventories.
1983
This performs the translation of xml lines to revision ids.
1985
:param line_iterator: An iterator of lines, origin_version_id
1986
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1987
to whether they were referred to by the inventory of the
1988
revision_id that they contain. Note that if that revision_id was
1989
not part of the line_iterator's output then False will be given -
1990
even though it may actually refer to that key.
1992
if not self._serializer.support_altered_by_hack:
1993
raise AssertionError(
1994
"_find_text_key_references_from_xml_inventory_lines only "
1995
"supported for branches which store inventory as unnested xml"
1996
", not on %r" % self)
384
self._revision_store.add_revision_signature_text(revision_id,
386
self.get_transaction())
388
def fileids_altered_by_revision_ids(self, revision_ids):
389
"""Find the file ids and versions affected by revisions.
391
:param revisions: an iterable containing revision ids.
392
:return: a dictionary mapping altered file-ids to an iterable of
393
revision_ids. Each altered file-ids has the exact revision_ids that
394
altered it listed explicitly.
396
assert isinstance(self._format, (RepositoryFormat5,
399
RepositoryFormatKnit1)), \
400
("fileids_altered_by_revision_ids only supported for branches "
401
"which store inventory as unnested xml, not on %r" % self)
402
selected_revision_ids = set(revision_ids)
403
w = self.get_inventory_weave()
1999
406
# this code needs to read every new line in every inventory for the
2000
407
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
2001
# not present in one of those inventories is unnecessary but not
408
# not present in one of those inventories is unnecessary but not
2002
409
# harmful because we are filtering by the revision id marker in the
2003
# inventory lines : we only select file ids altered in one of those
410
# inventory lines : we only select file ids altered in one of those
2004
411
# revisions. We don't need to see all lines in the inventory because
2005
412
# only those added in an inventory in rev X can contain a revision=X
2007
unescape_revid_cache = {}
2008
unescape_fileid_cache = {}
2010
# jam 20061218 In a big fetch, this handles hundreds of thousands
2011
# of lines, so it has had a lot of inlining and optimizing done.
2012
# Sorry that it is a little bit messy.
2013
# Move several functions to be local variables, since this is a long
2015
search = self._file_ids_altered_regex.search
2016
unescape = _unescape_xml
2017
setdefault = result.setdefault
2018
for line, line_key in line_iterator:
2019
match = search(line)
2022
# One call to match.group() returning multiple items is quite a
2023
# bit faster than 2 calls to match.group() each returning 1
2024
file_id, revision_id = match.group('file_id', 'revision_id')
2026
# Inlining the cache lookups helps a lot when you make 170,000
2027
# lines and 350k ids, versus 8.4 unique ids.
2028
# Using a cache helps in 2 ways:
2029
# 1) Avoids unnecessary decoding calls
2030
# 2) Re-uses cached strings, which helps in future set and
2032
# (2) is enough that removing encoding entirely along with
2033
# the cache (so we are using plain strings) results in no
2034
# performance improvement.
2036
revision_id = unescape_revid_cache[revision_id]
2038
unescaped = unescape(revision_id)
2039
unescape_revid_cache[revision_id] = unescaped
2040
revision_id = unescaped
2042
# Note that unconditionally unescaping means that we deserialise
2043
# every fileid, which for general 'pull' is not great, but we don't
2044
# really want to have some many fulltexts that this matters anyway.
2047
file_id = unescape_fileid_cache[file_id]
2049
unescaped = unescape(file_id)
2050
unescape_fileid_cache[file_id] = unescaped
2053
key = (file_id, revision_id)
2054
setdefault(key, False)
2055
if revision_id == line_key[-1]:
2059
def _inventory_xml_lines_for_keys(self, keys):
2060
"""Get a line iterator of the sort needed for findind references.
2062
Not relevant for non-xml inventory repositories.
2064
Ghosts in revision_keys are ignored.
2066
:param revision_keys: The revision keys for the inventories to inspect.
2067
:return: An iterator over (inventory line, revid) for the fulltexts of
2068
all of the xml inventories specified by revision_keys.
2070
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2071
for record in stream:
2072
if record.storage_kind != 'absent':
2073
chunks = record.get_bytes_as('chunked')
2074
revid = record.key[-1]
2075
lines = osutils.chunks_to_lines(chunks)
2079
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
2081
"""Helper routine for fileids_altered_by_revision_ids.
2083
This performs the translation of xml lines to revision ids.
2085
:param line_iterator: An iterator of lines, origin_version_id
2086
:param revision_keys: The revision ids to filter for. This should be a
2087
set or other type which supports efficient __contains__ lookups, as
2088
the revision key from each parsed line will be looked up in the
2089
revision_keys filter.
2090
:return: a dictionary mapping altered file-ids to an iterable of
2091
revision_ids. Each altered file-ids has the exact revision_ids that
2092
altered it listed explicitly.
2094
seen = set(self._find_text_key_references_from_xml_inventory_lines(
2095
line_iterator).iterkeys())
2096
parent_keys = self._find_parent_keys_of_revisions(revision_keys)
2097
parent_seen = set(self._find_text_key_references_from_xml_inventory_lines(
2098
self._inventory_xml_lines_for_keys(parent_keys)))
2099
new_keys = seen - parent_seen
2101
setdefault = result.setdefault
2102
for key in new_keys:
2103
setdefault(key[0], set()).add(key[-1])
2106
def _find_parent_ids_of_revisions(self, revision_ids):
2107
"""Find all parent ids that are mentioned in the revision graph.
2109
:return: set of revisions that are parents of revision_ids which are
2110
not part of revision_ids themselves
2112
parent_map = self.get_parent_map(revision_ids)
2114
map(parent_ids.update, parent_map.itervalues())
2115
parent_ids.difference_update(revision_ids)
2116
parent_ids.discard(_mod_revision.NULL_REVISION)
2119
def _find_parent_keys_of_revisions(self, revision_keys):
2120
"""Similar to _find_parent_ids_of_revisions, but used with keys.
2122
:param revision_keys: An iterable of revision_keys.
2123
:return: The parents of all revision_keys that are not already in
2126
parent_map = self.revisions.get_parent_map(revision_keys)
2128
map(parent_keys.update, parent_map.itervalues())
2129
parent_keys.difference_update(revision_keys)
2130
parent_keys.discard(_mod_revision.NULL_REVISION)
2133
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
2134
"""Find the file ids and versions affected by revisions.
2136
:param revisions: an iterable containing revision ids.
2137
:param _inv_weave: The inventory weave from this repository or None.
2138
If None, the inventory weave will be opened automatically.
2139
:return: a dictionary mapping altered file-ids to an iterable of
2140
revision_ids. Each altered file-ids has the exact revision_ids that
2141
altered it listed explicitly.
2143
selected_keys = set((revid,) for revid in revision_ids)
2144
w = _inv_weave or self.inventories
2145
return self._find_file_ids_from_xml_inventory_lines(
2146
w.iter_lines_added_or_present_in_keys(
2147
selected_keys, pb=None),
2150
def iter_files_bytes(self, desired_files):
2151
"""Iterate through file versions.
2153
Files will not necessarily be returned in the order they occur in
2154
desired_files. No specific order is guaranteed.
2156
Yields pairs of identifier, bytes_iterator. identifier is an opaque
2157
value supplied by the caller as part of desired_files. It should
2158
uniquely identify the file version in the caller's context. (Examples:
2159
an index number or a TreeTransform trans_id.)
2161
bytes_iterator is an iterable of bytestrings for the file. The
2162
kind of iterable and length of the bytestrings are unspecified, but for
2163
this implementation, it is a list of bytes produced by
2164
VersionedFile.get_record_stream().
2166
:param desired_files: a list of (file_id, revision_id, identifier)
2170
for file_id, revision_id, callable_data in desired_files:
2171
text_keys[(file_id, revision_id)] = callable_data
2172
for record in self.texts.get_record_stream(text_keys, 'unordered', True):
2173
if record.storage_kind == 'absent':
2174
raise errors.RevisionNotPresent(record.key, self)
2175
yield text_keys[record.key], record.get_bytes_as('chunked')
2177
def _generate_text_key_index(self, text_key_references=None,
2179
"""Generate a new text key index for the repository.
2181
This is an expensive function that will take considerable time to run.
2183
:return: A dict mapping text keys ((file_id, revision_id) tuples) to a
2184
list of parents, also text keys. When a given key has no parents,
2185
the parents list will be [NULL_REVISION].
2187
# All revisions, to find inventory parents.
2188
if ancestors is None:
2189
graph = self.get_graph()
2190
ancestors = graph.get_parent_map(self.all_revision_ids())
2191
if text_key_references is None:
2192
text_key_references = self.find_text_key_references()
2193
pb = ui.ui_factory.nested_progress_bar()
2195
return self._do_generate_text_key_index(ancestors,
2196
text_key_references, pb)
2200
def _do_generate_text_key_index(self, ancestors, text_key_references, pb):
2201
"""Helper for _generate_text_key_index to avoid deep nesting."""
2202
revision_order = tsort.topo_sort(ancestors)
2203
invalid_keys = set()
2205
for revision_id in revision_order:
2206
revision_keys[revision_id] = set()
2207
text_count = len(text_key_references)
2208
# a cache of the text keys to allow reuse; costs a dict of all the
2209
# keys, but saves a 2-tuple for every child of a given key.
2211
for text_key, valid in text_key_references.iteritems():
2213
invalid_keys.add(text_key)
2215
revision_keys[text_key[1]].add(text_key)
2216
text_key_cache[text_key] = text_key
2217
del text_key_references
2219
text_graph = graph.Graph(graph.DictParentsProvider(text_index))
2220
NULL_REVISION = _mod_revision.NULL_REVISION
2221
# Set a cache with a size of 10 - this suffices for bzr.dev but may be
2222
# too small for large or very branchy trees. However, for 55K path
2223
# trees, it would be easy to use too much memory trivially. Ideally we
2224
# could gauge this by looking at available real memory etc, but this is
2225
# always a tricky proposition.
2226
inventory_cache = lru_cache.LRUCache(10)
2227
batch_size = 10 # should be ~150MB on a 55K path tree
2228
batch_count = len(revision_order) / batch_size + 1
2230
pb.update("Calculating text parents", processed_texts, text_count)
2231
for offset in xrange(batch_count):
2232
to_query = revision_order[offset * batch_size:(offset + 1) *
2236
for revision_id in to_query:
2237
parent_ids = ancestors[revision_id]
2238
for text_key in revision_keys[revision_id]:
2239
pb.update("Calculating text parents", processed_texts)
2240
processed_texts += 1
2241
candidate_parents = []
2242
for parent_id in parent_ids:
2243
parent_text_key = (text_key[0], parent_id)
2245
check_parent = parent_text_key not in \
2246
revision_keys[parent_id]
2248
# the parent parent_id is a ghost:
2249
check_parent = False
2250
# truncate the derived graph against this ghost.
2251
parent_text_key = None
2253
# look at the parent commit details inventories to
2254
# determine possible candidates in the per file graph.
2257
inv = inventory_cache[parent_id]
2259
inv = self.revision_tree(parent_id).inventory
2260
inventory_cache[parent_id] = inv
2262
parent_entry = inv[text_key[0]]
2263
except (KeyError, errors.NoSuchId):
2265
if parent_entry is not None:
2267
text_key[0], parent_entry.revision)
2269
parent_text_key = None
2270
if parent_text_key is not None:
2271
candidate_parents.append(
2272
text_key_cache[parent_text_key])
2273
parent_heads = text_graph.heads(candidate_parents)
2274
new_parents = list(parent_heads)
2275
new_parents.sort(key=lambda x:candidate_parents.index(x))
2276
if new_parents == []:
2277
new_parents = [NULL_REVISION]
2278
text_index[text_key] = new_parents
2280
for text_key in invalid_keys:
2281
text_index[text_key] = [NULL_REVISION]
2284
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
2285
"""Get an iterable listing the keys of all the data introduced by a set
2288
The keys will be ordered so that the corresponding items can be safely
2289
fetched and inserted in that order.
2291
:returns: An iterable producing tuples of (knit-kind, file-id,
2292
versions). knit-kind is one of 'file', 'inventory', 'signatures',
2293
'revisions'. file-id is None unless knit-kind is 'file'.
2295
for result in self._find_file_keys_to_fetch(revision_ids, _files_pb):
2298
for result in self._find_non_file_keys_to_fetch(revision_ids):
2301
def _find_file_keys_to_fetch(self, revision_ids, pb):
2302
# XXX: it's a bit weird to control the inventory weave caching in this
2303
# generator. Ideally the caching would be done in fetch.py I think. Or
2304
# maybe this generator should explicitly have the contract that it
2305
# should not be iterated until the previously yielded item has been
2307
inv_w = self.inventories
2309
# file ids that changed
2310
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
2312
num_file_ids = len(file_ids)
2313
for file_id, altered_versions in file_ids.iteritems():
2315
pb.update("Fetch texts", count, num_file_ids)
2317
yield ("file", file_id, altered_versions)
2319
def _find_non_file_keys_to_fetch(self, revision_ids):
2321
yield ("inventory", None, revision_ids)
2324
# XXX: Note ATM no callers actually pay attention to this return
2325
# instead they just use the list of revision ids and ignore
2326
# missing sigs. Consider removing this work entirely
2327
revisions_with_signatures = set(self.signatures.get_parent_map(
2328
[(r,) for r in revision_ids]))
2329
revisions_with_signatures = set(
2330
[r for (r,) in revisions_with_signatures])
2331
revisions_with_signatures.intersection_update(revision_ids)
2332
yield ("signatures", None, revisions_with_signatures)
2335
yield ("revisions", None, revision_ids)
414
for line in w.iter_lines_added_or_present_in_versions(selected_revision_ids):
415
start = line.find('file_id="')+9
416
if start < 9: continue
417
end = line.find('"', start)
419
file_id = _unescape_xml(line[start:end])
421
start = line.find('revision="')+10
422
if start < 10: continue
423
end = line.find('"', start)
425
revision_id = _unescape_xml(line[start:end])
426
if revision_id in selected_revision_ids:
427
result.setdefault(file_id, set()).add(revision_id)
431
def get_inventory_weave(self):
432
return self.control_weaves.get_weave('inventory',
433
self.get_transaction())
2337
435
@needs_read_lock
2338
436
def get_inventory(self, revision_id):
2339
"""Get Inventory object by revision id."""
2340
return self.iter_inventories([revision_id]).next()
2342
def iter_inventories(self, revision_ids, ordering=None):
2343
"""Get many inventories by revision_ids.
2345
This will buffer some or all of the texts used in constructing the
2346
inventories in memory, but will only parse a single inventory at a
2349
:param revision_ids: The expected revision ids of the inventories.
2350
:param ordering: optional ordering, e.g. 'topological'. If not
2351
specified, the order of revision_ids will be preserved (by
2352
buffering if necessary).
2353
:return: An iterator of inventories.
2355
if ((None in revision_ids)
2356
or (_mod_revision.NULL_REVISION in revision_ids)):
2357
raise ValueError('cannot get null revision inventory')
2358
return self._iter_inventories(revision_ids, ordering)
2360
def _iter_inventories(self, revision_ids, ordering):
2361
"""single-document based inventory iteration."""
2362
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2363
for text, revision_id in inv_xmls:
2364
yield self._deserialise_inventory(revision_id, text)
2366
def _iter_inventory_xmls(self, revision_ids, ordering):
2367
if ordering is None:
2368
order_as_requested = True
2369
ordering = 'unordered'
2371
order_as_requested = False
2372
keys = [(revision_id,) for revision_id in revision_ids]
2375
if order_as_requested:
2376
key_iter = iter(keys)
2377
next_key = key_iter.next()
2378
stream = self.inventories.get_record_stream(keys, ordering, True)
2380
for record in stream:
2381
if record.storage_kind != 'absent':
2382
chunks = record.get_bytes_as('chunked')
2383
if order_as_requested:
2384
text_chunks[record.key] = chunks
2386
yield ''.join(chunks), record.key[-1]
2388
raise errors.NoSuchRevision(self, record.key)
2389
if order_as_requested:
2390
# Yield as many results as we can while preserving order.
2391
while next_key in text_chunks:
2392
chunks = text_chunks.pop(next_key)
2393
yield ''.join(chunks), next_key[-1]
2395
next_key = key_iter.next()
2396
except StopIteration:
2397
# We still want to fully consume the get_record_stream,
2398
# just in case it is not actually finished at this point
2402
def _deserialise_inventory(self, revision_id, xml):
2403
"""Transform the xml into an inventory object.
437
"""Get Inventory object by hash."""
438
return self.deserialise_inventory(
439
revision_id, self.get_inventory_xml(revision_id))
441
def deserialise_inventory(self, revision_id, xml):
442
"""Transform the xml into an inventory object.
2405
444
:param revision_id: The expected revision id of the inventory.
2406
445
:param xml: A serialised inventory.
2408
result = self._serializer.read_inventory_from_string(xml, revision_id,
2409
entry_cache=self._inventory_entry_cache,
2410
return_from_cache=self._safe_to_return_from_cache)
2411
if result.revision_id != revision_id:
2412
raise AssertionError('revision id mismatch %s != %s' % (
2413
result.revision_id, revision_id))
2416
def get_serializer_format(self):
2417
return self._serializer.format_num
447
return xml5.serializer_v5.read_inventory_from_string(xml)
2419
449
@needs_read_lock
2420
def _get_inventory_xml(self, revision_id):
2421
"""Get serialized inventory as a string."""
2422
texts = self._iter_inventory_xmls([revision_id], 'unordered')
450
def get_inventory_xml(self, revision_id):
451
"""Get inventory XML as a file object."""
2424
text, revision_id = texts.next()
2425
except StopIteration:
453
assert isinstance(revision_id, basestring), type(revision_id)
454
iw = self.get_inventory_weave()
455
return iw.get_text(revision_id)
2426
457
raise errors.HistoryMissing(self, 'inventory', revision_id)
2429
def get_rev_id_for_revno(self, revno, known_pair):
2430
"""Return the revision id of a revno, given a later (revno, revid)
2431
pair in the same history.
2433
:return: if found (True, revid). If the available history ran out
2434
before reaching the revno, then this returns
2435
(False, (closest_revno, closest_revid)).
2437
known_revno, known_revid = known_pair
2438
partial_history = [known_revid]
2439
distance_from_known = known_revno - revno
2440
if distance_from_known < 0:
2442
'requested revno (%d) is later than given known revno (%d)'
2443
% (revno, known_revno))
2446
self, partial_history, stop_index=distance_from_known)
2447
except errors.RevisionNotPresent, err:
2448
if err.revision_id == known_revid:
2449
# The start revision (known_revid) wasn't found.
2451
# This is a stacked repository with no fallbacks, or a there's a
2452
# left-hand ghost. Either way, even though the revision named in
2453
# the error isn't in this repo, we know it's the next step in this
2454
# left-hand history.
2455
partial_history.append(err.revision_id)
2456
if len(partial_history) <= distance_from_known:
2457
# Didn't find enough history to get a revid for the revno.
2458
earliest_revno = known_revno - len(partial_history) + 1
2459
return (False, (earliest_revno, partial_history[-1]))
2460
if len(partial_history) - 1 > distance_from_known:
2461
raise AssertionError('_iter_for_revno returned too much history')
2462
return (True, partial_history[-1])
2464
def iter_reverse_revision_history(self, revision_id):
2465
"""Iterate backwards through revision ids in the lefthand history
2467
:param revision_id: The revision id to start with. All its lefthand
2468
ancestors will be traversed.
2470
graph = self.get_graph()
2471
next_id = revision_id
2473
if next_id in (None, _mod_revision.NULL_REVISION):
460
def get_inventory_sha1(self, revision_id):
461
"""Return the sha1 hash of the inventory entry
463
return self.get_revision(revision_id).inventory_sha1
466
def get_revision_graph(self, revision_id=None):
467
"""Return a dictionary containing the revision graph.
469
:return: a dictionary of revision_id->revision_parents_list.
471
weave = self.get_inventory_weave()
472
all_revisions = self._eliminate_revisions_not_present(weave.versions())
473
entire_graph = dict([(node, weave.get_parents(node)) for
474
node in all_revisions])
475
if revision_id is None:
477
elif revision_id not in entire_graph:
478
raise errors.NoSuchRevision(self, revision_id)
480
# add what can be reached from revision_id
482
pending = set([revision_id])
483
while len(pending) > 0:
485
result[node] = entire_graph[node]
486
for revision_id in result[node]:
487
if revision_id not in result:
488
pending.add(revision_id)
492
def get_revision_graph_with_ghosts(self, revision_ids=None):
493
"""Return a graph of the revisions with ghosts marked as applicable.
495
:param revision_ids: an iterable of revisions to graph or None for all.
496
:return: a Graph object with the graph reachable from revision_ids.
500
pending = set(self.all_revision_ids())
503
pending = set(revision_ids)
504
required = set(revision_ids)
507
revision_id = pending.pop()
2476
parents = graph.get_parent_map([next_id])[next_id]
2478
raise errors.RevisionNotPresent(next_id, self)
2480
if len(parents) == 0:
2483
next_id = parents[0]
509
rev = self.get_revision(revision_id)
510
except errors.NoSuchRevision:
511
if revision_id in required:
514
result.add_ghost(revision_id)
516
for parent_id in rev.parent_ids:
517
# is this queued or done ?
518
if (parent_id not in pending and
519
parent_id not in done):
521
pending.add(parent_id)
522
result.add_node(revision_id, rev.parent_ids)
523
done.add(revision_id)
527
def get_revision_inventory(self, revision_id):
528
"""Return inventory of a past revision."""
529
# TODO: Unify this with get_inventory()
530
# bzr 0.0.6 and later imposes the constraint that the inventory_id
531
# must be the same as its revision, so this is trivial.
532
if revision_id is None:
533
# This does not make sense: if there is no revision,
534
# then it is the current tree inventory surely ?!
535
# and thus get_root_id() is something that looks at the last
536
# commit on the branch, and the get_root_id is an inventory check.
537
raise NotImplementedError
538
# return Inventory(self.get_root_id())
540
return self.get_inventory(revision_id)
2485
543
def is_shared(self):
2486
544
"""Return True if this repository is flagged as a shared repository."""
2487
545
raise NotImplementedError(self.is_shared)
2928
self._transport.delete('no-working-trees')
805
self.control_files._transport.delete('no-working-trees')
2929
806
except errors.NoSuchFile:
2932
self._transport.put_bytes('no-working-trees', '',
2933
mode=self.bzrdir._get_file_mode())
809
self.control_files.put_utf8('no-working-trees', '')
2935
811
def make_working_trees(self):
2936
812
"""Returns the policy for making working trees on new branches."""
2937
return not self._transport.has('no-working-trees')
2940
class MetaDirVersionedFileRepository(MetaDirRepository):
2941
"""Repositories in a meta-dir, that work via versioned file objects."""
2943
def __init__(self, _format, a_bzrdir, control_files):
2944
super(MetaDirVersionedFileRepository, self).__init__(_format, a_bzrdir,
2948
network_format_registry = registry.FormatRegistry()
2949
"""Registry of formats indexed by their network name.
2951
The network name for a repository format is an identifier that can be used when
2952
referring to formats with smart server operations. See
2953
RepositoryFormat.network_name() for more detail.
2957
format_registry = registry.FormatRegistry(network_format_registry)
2958
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
2960
This can contain either format instances themselves, or classes/factories that
2961
can be called to obtain one.
2965
#####################################################################
2966
# Repository Formats
813
return not self.control_files._transport.has('no-working-trees')
816
class KnitRepository(MetaDirRepository):
817
"""Knit format repository."""
819
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
820
inv_vf.add_lines_with_ghosts(revid, parents, lines)
823
def _all_revision_ids(self):
824
"""See Repository.all_revision_ids()."""
825
# Knits get the revision graph from the index of the revision knit, so
826
# it's always possible even if they're on an unlistable transport.
827
return self._revision_store.all_revision_ids(self.get_transaction())
829
def fileid_involved_between_revs(self, from_revid, to_revid):
830
"""Find file_id(s) which are involved in the changes between revisions.
832
This determines the set of revisions which are involved, and then
833
finds all file ids affected by those revisions.
835
vf = self._get_revision_vf()
836
from_set = set(vf.get_ancestry(from_revid))
837
to_set = set(vf.get_ancestry(to_revid))
838
changed = to_set.difference(from_set)
839
return self._fileid_involved_by_set(changed)
841
def fileid_involved(self, last_revid=None):
842
"""Find all file_ids modified in the ancestry of last_revid.
844
:param last_revid: If None, last_revision() will be used.
847
changed = set(self.all_revision_ids())
849
changed = set(self.get_ancestry(last_revid))
852
return self._fileid_involved_by_set(changed)
855
def get_ancestry(self, revision_id):
856
"""Return a list of revision-ids integrated by a revision.
858
This is topologically sorted.
860
if revision_id is None:
862
vf = self._get_revision_vf()
864
return [None] + vf.get_ancestry(revision_id)
865
except errors.RevisionNotPresent:
866
raise errors.NoSuchRevision(self, revision_id)
869
def get_revision(self, revision_id):
870
"""Return the Revision object for a named revision"""
871
return self.get_revision_reconcile(revision_id)
874
def get_revision_graph(self, revision_id=None):
875
"""Return a dictionary containing the revision graph.
877
:return: a dictionary of revision_id->revision_parents_list.
879
weave = self._get_revision_vf()
880
entire_graph = weave.get_graph()
881
if revision_id is None:
882
return weave.get_graph()
883
elif revision_id not in weave:
884
raise errors.NoSuchRevision(self, revision_id)
886
# add what can be reached from revision_id
888
pending = set([revision_id])
889
while len(pending) > 0:
891
result[node] = weave.get_parents(node)
892
for revision_id in result[node]:
893
if revision_id not in result:
894
pending.add(revision_id)
898
def get_revision_graph_with_ghosts(self, revision_ids=None):
899
"""Return a graph of the revisions with ghosts marked as applicable.
901
:param revision_ids: an iterable of revisions to graph or None for all.
902
:return: a Graph object with the graph reachable from revision_ids.
905
vf = self._get_revision_vf()
906
versions = set(vf.versions())
908
pending = set(self.all_revision_ids())
911
pending = set(revision_ids)
912
required = set(revision_ids)
915
revision_id = pending.pop()
916
if not revision_id in versions:
917
if revision_id in required:
918
raise errors.NoSuchRevision(self, revision_id)
920
result.add_ghost(revision_id)
921
# mark it as done so we don't try for it again.
922
done.add(revision_id)
924
parent_ids = vf.get_parents_with_ghosts(revision_id)
925
for parent_id in parent_ids:
926
# is this queued or done ?
927
if (parent_id not in pending and
928
parent_id not in done):
930
pending.add(parent_id)
931
result.add_node(revision_id, parent_ids)
932
done.add(revision_id)
935
def _get_revision_vf(self):
936
""":return: a versioned file containing the revisions."""
937
vf = self._revision_store.get_revision_file(self.get_transaction())
941
def reconcile(self, other=None, thorough=False):
942
"""Reconcile this repository."""
943
from bzrlib.reconcile import KnitReconciler
944
reconciler = KnitReconciler(self, thorough=thorough)
945
reconciler.reconcile()
948
def revision_parents(self, revision_id):
949
return self._get_revision_vf().get_parents(revision_id)
2968
952
class RepositoryFormat(object):
2969
953
"""A repository format.
2971
Formats provide four things:
955
Formats provide three things:
2972
956
* An initialization routine to construct repository data on disk.
2973
* a optional format string which is used when the BzrDir supports
957
* a format string which is used when the BzrDir supports versioned
2975
959
* an open routine which returns a Repository instance.
2976
* A network name for referring to the format in smart server RPC
2979
There is one and only one Format subclass for each on-disk format. But
2980
there can be one Repository subclass that is used for several different
2981
formats. The _format attribute on a Repository instance can be used to
2982
determine the disk format.
2984
Formats are placed in a registry by their format string for reference
2985
during opening. These should be subclasses of RepositoryFormat for
961
Formats are placed in an dict by their format string for reference
962
during opening. These should be subclasses of RepositoryFormat
2988
965
Once a format is deprecated, just deprecate the initialize and open
2989
methods on the format class. Do not deprecate the object, as the
2990
object may be created even when a repository instance hasn't been
966
methods on the format class. Do not deprecate the object, as the
967
object will be created every system load.
2993
969
Common instance attributes:
2994
970
_matchingbzrdir - the bzrdir format that the repository format was
2995
971
originally written to work with. This can be used if manually
2996
972
constructing a bzrdir and repository, or more commonly for test suite
3000
# Set to True or False in derived classes. True indicates that the format
3001
# supports ghosts gracefully.
3002
supports_ghosts = None
3003
# Can this repository be given external locations to lookup additional
3004
# data. Set to True or False in derived classes.
3005
supports_external_lookups = None
3006
# Does this format support CHK bytestring lookups. Set to True or False in
3008
supports_chks = None
3009
# Should commit add an inventory, or an inventory delta to the repository.
3010
_commit_inv_deltas = True
3011
# What order should fetch operations request streams in?
3012
# The default is unordered as that is the cheapest for an origin to
3014
_fetch_order = 'unordered'
3015
# Does this repository format use deltas that can be fetched as-deltas ?
3016
# (E.g. knits, where the knit deltas can be transplanted intact.
3017
# We default to False, which will ensure that enough data to get
3018
# a full text out of any fetch stream will be grabbed.
3019
_fetch_uses_deltas = False
3020
# Should fetch trigger a reconcile after the fetch? Only needed for
3021
# some repository formats that can suffer internal inconsistencies.
3022
_fetch_reconcile = False
3023
# Does this format have < O(tree_size) delta generation. Used to hint what
3024
# code path for commit, amongst other things.
3026
# Does doing a pack operation compress data? Useful for the pack UI command
3027
# (so if there is one pack, the operation can still proceed because it may
3028
# help), and for fetching when data won't have come from the same
3030
pack_compresses = False
3031
# Does the repository inventory storage understand references to trees?
3032
supports_tree_reference = None
3033
# Is the format experimental ?
3034
experimental = False
3037
return "<%s>" % self.__class__.__name__
3039
def __eq__(self, other):
3040
# format objects are generally stateless
3041
return isinstance(other, self.__class__)
3043
def __ne__(self, other):
3044
return not self == other
976
_default_format = None
977
"""The default format used for new repositories."""
980
"""The known formats."""
3047
983
def find_format(klass, a_bzrdir):
3048
"""Return the format for the repository object in a_bzrdir.
3050
This is used by bzr native formats that have a "format" file in
3051
the repository. Other methods may be used by different types of
984
"""Return the format for the repository object in a_bzrdir."""
3055
986
transport = a_bzrdir.get_repository_transport(None)
3056
format_string = transport.get_bytes("format")
3057
return format_registry.get(format_string)
987
format_string = transport.get("format").read()
988
return klass._formats[format_string]
3058
989
except errors.NoSuchFile:
3059
990
raise errors.NoRepositoryPresent(a_bzrdir)
3060
991
except KeyError:
3061
raise errors.UnknownFormatError(format=format_string,
3065
def register_format(klass, format):
3066
format_registry.register(format.get_format_string(), format)
3069
def unregister_format(klass, format):
3070
format_registry.remove(format.get_format_string())
992
raise errors.UnknownFormatError(format=format_string)
994
def _get_control_store(self, repo_transport, control_files):
995
"""Return the control store for this repository."""
996
raise NotImplementedError(self._get_control_store)
3073
999
def get_default_format(klass):
3074
1000
"""Return the current default format."""
3075
from bzrlib import bzrdir
3076
return bzrdir.format_registry.make_bzrdir('default').repository_format
1001
return klass._default_format
3078
1003
def get_format_string(self):
3079
1004
"""Return the ASCII format string that identifies this format.
3081
Note that in pre format ?? repositories the format string is
1006
Note that in pre format ?? repositories the format string is
3082
1007
not permitted nor written to disk.
3084
1009
raise NotImplementedError(self.get_format_string)
3115
1061
:param a_bzrdir: The bzrdir to put the new repository in it.
3116
1062
:param shared: The repository should be initialized as a sharable one.
3117
:returns: The new repository object.
3119
1064
This may raise UninitializableFormat if shared repository are not
3120
1065
compatible the a_bzrdir.
3122
raise NotImplementedError(self.initialize)
3124
1068
def is_supported(self):
3125
1069
"""Is this format supported?
3127
1071
Supported formats must be initializable and openable.
3128
Unsupported formats may not support initialization or committing or
1072
Unsupported formats may not support initialization or committing or
3129
1073
some other features depending on the reason for not being supported.
3133
def network_name(self):
3134
"""A simple byte string uniquely identifying this format for RPC calls.
3136
MetaDir repository formats use their disk format string to identify the
3137
repository over the wire. All in one formats such as bzr < 0.8, and
3138
foreign formats like svn/git and hg should use some marker which is
3139
unique and immutable.
3141
raise NotImplementedError(self.network_name)
3143
def check_conversion_target(self, target_format):
3144
if self.rich_root_data and not target_format.rich_root_data:
3145
raise errors.BadConversionTarget(
3146
'Does not support rich root data.', target_format,
3148
if (self.supports_tree_reference and
3149
not getattr(target_format, 'supports_tree_reference', False)):
3150
raise errors.BadConversionTarget(
3151
'Does not support nested trees', target_format,
3154
1077
def open(self, a_bzrdir, _found=False):
3155
1078
"""Return an instance of this format for the bzrdir a_bzrdir.
3157
1080
_found is a private parameter, do not use it.
3159
1082
raise NotImplementedError(self.open)
1085
def register_format(klass, format):
1086
klass._formats[format.get_format_string()] = format
1089
def set_default_format(klass, format):
1090
klass._default_format = format
1093
def unregister_format(klass, format):
1094
assert klass._formats[format.get_format_string()] is format
1095
del klass._formats[format.get_format_string()]
1098
class PreSplitOutRepositoryFormat(RepositoryFormat):
1099
"""Base class for the pre split out repository formats."""
1101
def initialize(self, a_bzrdir, shared=False, _internal=False):
1102
"""Create a weave repository.
1104
TODO: when creating split out bzr branch formats, move this to a common
1105
base for Format5, Format6. or something like that.
1107
from bzrlib.weavefile import write_weave_v5
1108
from bzrlib.weave import Weave
1111
raise errors.IncompatibleFormat(self, a_bzrdir._format)
1114
# always initialized when the bzrdir is.
1115
return self.open(a_bzrdir, _found=True)
1117
# Create an empty weave
1119
write_weave_v5(Weave(), sio)
1120
empty_weave = sio.getvalue()
1122
mutter('creating repository in %s.', a_bzrdir.transport.base)
1123
dirs = ['revision-store', 'weaves']
1124
files = [('inventory.weave', StringIO(empty_weave)),
1127
# FIXME: RBC 20060125 don't peek under the covers
1128
# NB: no need to escape relative paths that are url safe.
1129
control_files = LockableFiles(a_bzrdir.transport, 'branch-lock',
1131
control_files.create_lock()
1132
control_files.lock_write()
1133
control_files._transport.mkdir_multi(dirs,
1134
mode=control_files._dir_mode)
1136
for file, content in files:
1137
control_files.put(file, content)
1139
control_files.unlock()
1140
return self.open(a_bzrdir, _found=True)
1142
def _get_control_store(self, repo_transport, control_files):
1143
"""Return the control store for this repository."""
1144
return self._get_versioned_file_store('',
1149
def _get_text_store(self, transport, control_files):
1150
"""Get a store for file texts for this format."""
1151
raise NotImplementedError(self._get_text_store)
1153
def open(self, a_bzrdir, _found=False):
1154
"""See RepositoryFormat.open()."""
1156
# we are being called directly and must probe.
1157
raise NotImplementedError
1159
repo_transport = a_bzrdir.get_repository_transport(None)
1160
control_files = a_bzrdir._control_files
1161
text_store = self._get_text_store(repo_transport, control_files)
1162
control_store = self._get_control_store(repo_transport, control_files)
1163
_revision_store = self._get_revision_store(repo_transport, control_files)
1164
return AllInOneRepository(_format=self,
1166
_revision_store=_revision_store,
1167
control_store=control_store,
1168
text_store=text_store)
1171
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1172
"""Bzr repository format 4.
1174
This repository format has:
1176
- TextStores for texts, inventories,revisions.
1178
This format is deprecated: it indexes texts using a text id which is
1179
removed in format 5; initialization and write support for this format
1184
super(RepositoryFormat4, self).__init__()
1185
self._matchingbzrdir = bzrdir.BzrDirFormat4()
1187
def get_format_description(self):
1188
"""See RepositoryFormat.get_format_description()."""
1189
return "Repository format 4"
1191
def initialize(self, url, shared=False, _internal=False):
1192
"""Format 4 branches cannot be created."""
1193
raise errors.UninitializableFormat(self)
1195
def is_supported(self):
1196
"""Format 4 is not supported.
1198
It is not supported because the model changed from 4 to 5 and the
1199
conversion logic is expensive - so doing it on the fly was not
1204
def _get_control_store(self, repo_transport, control_files):
1205
"""Format 4 repositories have no formal control store at this point.
1207
This will cause any control-file-needing apis to fail - this is desired.
1211
def _get_revision_store(self, repo_transport, control_files):
1212
"""See RepositoryFormat._get_revision_store()."""
1213
from bzrlib.xml4 import serializer_v4
1214
return self._get_text_rev_store(repo_transport,
1217
serializer=serializer_v4)
1219
def _get_text_store(self, transport, control_files):
1220
"""See RepositoryFormat._get_text_store()."""
1223
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1224
"""Bzr control format 5.
1226
This repository format has:
1227
- weaves for file texts and inventory
1229
- TextStores for revisions and signatures.
1233
super(RepositoryFormat5, self).__init__()
1234
self._matchingbzrdir = bzrdir.BzrDirFormat5()
1236
def get_format_description(self):
1237
"""See RepositoryFormat.get_format_description()."""
1238
return "Weave repository format 5"
1240
def _get_revision_store(self, repo_transport, control_files):
1241
"""See RepositoryFormat._get_revision_store()."""
1242
"""Return the revision store object for this a_bzrdir."""
1243
return self._get_text_rev_store(repo_transport,
1248
def _get_text_store(self, transport, control_files):
1249
"""See RepositoryFormat._get_text_store()."""
1250
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1253
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1254
"""Bzr control format 6.
1256
This repository format has:
1257
- weaves for file texts and inventory
1258
- hash subdirectory based stores.
1259
- TextStores for revisions and signatures.
1263
super(RepositoryFormat6, self).__init__()
1264
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1266
def get_format_description(self):
1267
"""See RepositoryFormat.get_format_description()."""
1268
return "Weave repository format 6"
1270
def _get_revision_store(self, repo_transport, control_files):
1271
"""See RepositoryFormat._get_revision_store()."""
1272
return self._get_text_rev_store(repo_transport,
1278
def _get_text_store(self, transport, control_files):
1279
"""See RepositoryFormat._get_text_store()."""
1280
return self._get_versioned_file_store('weaves', transport, control_files)
3162
1283
class MetaDirRepositoryFormat(RepositoryFormat):
3163
1284
"""Common base class for the new repositories using the metadir layout."""
3165
rich_root_data = False
3166
supports_tree_reference = False
3167
supports_external_lookups = False
3170
def _matchingbzrdir(self):
3171
matching = bzrdir.BzrDirMetaFormat1()
3172
matching.repository_format = self
3175
1286
def __init__(self):
3176
1287
super(MetaDirRepositoryFormat, self).__init__()
1288
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
3178
1290
def _create_control_files(self, a_bzrdir):
3179
1291
"""Create the required files and the initial control_files object."""
3180
1292
# FIXME: RBC 20060125 don't peek under the covers
3181
1293
# NB: no need to escape relative paths that are url safe.
3182
1294
repository_transport = a_bzrdir.get_repository_transport(self)
3183
control_files = lockable_files.LockableFiles(repository_transport,
3184
'lock', lockdir.LockDir)
1295
control_files = LockableFiles(repository_transport, 'lock', LockDir)
3185
1296
control_files.create_lock()
3186
1297
return control_files
3189
1300
"""Upload the initial blank content."""
3190
1301
control_files = self._create_control_files(a_bzrdir)
3191
1302
control_files.lock_write()
3192
transport = control_files._transport
3194
utf8_files += [('shared-storage', '')]
3196
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
3197
for (filename, content_stream) in files:
3198
transport.put_file(filename, content_stream,
3199
mode=a_bzrdir._get_file_mode())
3200
for (filename, content_bytes) in utf8_files:
3201
transport.put_bytes_non_atomic(filename, content_bytes,
3202
mode=a_bzrdir._get_file_mode())
1304
control_files._transport.mkdir_multi(dirs,
1305
mode=control_files._dir_mode)
1306
for file, content in files:
1307
control_files.put(file, content)
1308
for file, content in utf8_files:
1309
control_files.put_utf8(file, content)
1311
control_files.put_utf8('shared-storage', '')
3204
1313
control_files.unlock()
3206
def network_name(self):
3207
"""Metadir formats have matching disk and network format strings."""
3208
return self.get_format_string()
3211
# Pre-0.8 formats that don't have a disk format string (because they are
3212
# versioned by the matching control directory). We use the control directories
3213
# disk format string as a key for the network_name because they meet the
3214
# constraints (simple string, unique, immutable).
3215
network_format_registry.register_lazy(
3216
"Bazaar-NG branch, format 5\n",
3217
'bzrlib.repofmt.weaverepo',
3218
'RepositoryFormat5',
3220
network_format_registry.register_lazy(
3221
"Bazaar-NG branch, format 6\n",
3222
'bzrlib.repofmt.weaverepo',
3223
'RepositoryFormat6',
3226
# formats which have no format string are not discoverable or independently
3227
# creatable on disk, so are not registered in format_registry. They're
3228
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
3229
# needed, it's constructed directly by the BzrDir. Non-native formats where
3230
# the repository is not separately opened are similar.
3232
format_registry.register_lazy(
3233
'Bazaar-NG Repository format 7',
3234
'bzrlib.repofmt.weaverepo',
3238
format_registry.register_lazy(
3239
'Bazaar-NG Knit Repository Format 1',
3240
'bzrlib.repofmt.knitrepo',
3241
'RepositoryFormatKnit1',
3244
format_registry.register_lazy(
3245
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
3246
'bzrlib.repofmt.knitrepo',
3247
'RepositoryFormatKnit3',
3250
format_registry.register_lazy(
3251
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
3252
'bzrlib.repofmt.knitrepo',
3253
'RepositoryFormatKnit4',
3256
# Pack-based formats. There is one format for pre-subtrees, and one for
3257
# post-subtrees to allow ease of testing.
3258
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
3259
format_registry.register_lazy(
3260
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
3261
'bzrlib.repofmt.pack_repo',
3262
'RepositoryFormatKnitPack1',
3264
format_registry.register_lazy(
3265
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
3266
'bzrlib.repofmt.pack_repo',
3267
'RepositoryFormatKnitPack3',
3269
format_registry.register_lazy(
3270
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
3271
'bzrlib.repofmt.pack_repo',
3272
'RepositoryFormatKnitPack4',
3274
format_registry.register_lazy(
3275
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
3276
'bzrlib.repofmt.pack_repo',
3277
'RepositoryFormatKnitPack5',
3279
format_registry.register_lazy(
3280
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
3281
'bzrlib.repofmt.pack_repo',
3282
'RepositoryFormatKnitPack5RichRoot',
3284
format_registry.register_lazy(
3285
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
3286
'bzrlib.repofmt.pack_repo',
3287
'RepositoryFormatKnitPack5RichRootBroken',
3289
format_registry.register_lazy(
3290
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
3291
'bzrlib.repofmt.pack_repo',
3292
'RepositoryFormatKnitPack6',
3294
format_registry.register_lazy(
3295
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
3296
'bzrlib.repofmt.pack_repo',
3297
'RepositoryFormatKnitPack6RichRoot',
3300
# Development formats.
3301
# Obsolete but kept pending a CHK based subtree format.
3302
format_registry.register_lazy(
3303
("Bazaar development format 2 with subtree support "
3304
"(needs bzr.dev from before 1.8)\n"),
3305
'bzrlib.repofmt.pack_repo',
3306
'RepositoryFormatPackDevelopment2Subtree',
3309
# 1.14->1.16 go below here
3310
format_registry.register_lazy(
3311
'Bazaar development format - group compression and chk inventory'
3312
' (needs bzr.dev from 1.14)\n',
3313
'bzrlib.repofmt.groupcompress_repo',
3314
'RepositoryFormatCHK1',
3317
format_registry.register_lazy(
3318
'Bazaar development format - chk repository with bencode revision '
3319
'serialization (needs bzr.dev from 1.16)\n',
3320
'bzrlib.repofmt.groupcompress_repo',
3321
'RepositoryFormatCHK2',
3323
format_registry.register_lazy(
3324
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
3325
'bzrlib.repofmt.groupcompress_repo',
3326
'RepositoryFormat2a',
1316
class RepositoryFormat7(MetaDirRepositoryFormat):
1317
"""Bzr repository 7.
1319
This repository format has:
1320
- weaves for file texts and inventory
1321
- hash subdirectory based stores.
1322
- TextStores for revisions and signatures.
1323
- a format marker of its own
1324
- an optional 'shared-storage' flag
1325
- an optional 'no-working-trees' flag
1328
def _get_control_store(self, repo_transport, control_files):
1329
"""Return the control store for this repository."""
1330
return self._get_versioned_file_store('',
1335
def get_format_string(self):
1336
"""See RepositoryFormat.get_format_string()."""
1337
return "Bazaar-NG Repository format 7"
1339
def get_format_description(self):
1340
"""See RepositoryFormat.get_format_description()."""
1341
return "Weave repository format 7"
1343
def _get_revision_store(self, repo_transport, control_files):
1344
"""See RepositoryFormat._get_revision_store()."""
1345
return self._get_text_rev_store(repo_transport,
1352
def _get_text_store(self, transport, control_files):
1353
"""See RepositoryFormat._get_text_store()."""
1354
return self._get_versioned_file_store('weaves',
1358
def initialize(self, a_bzrdir, shared=False):
1359
"""Create a weave repository.
1361
:param shared: If true the repository will be initialized as a shared
1364
from bzrlib.weavefile import write_weave_v5
1365
from bzrlib.weave import Weave
1367
# Create an empty weave
1369
write_weave_v5(Weave(), sio)
1370
empty_weave = sio.getvalue()
1372
mutter('creating repository in %s.', a_bzrdir.transport.base)
1373
dirs = ['revision-store', 'weaves']
1374
files = [('inventory.weave', StringIO(empty_weave)),
1376
utf8_files = [('format', self.get_format_string())]
1378
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1379
return self.open(a_bzrdir=a_bzrdir, _found=True)
1381
def open(self, a_bzrdir, _found=False, _override_transport=None):
1382
"""See RepositoryFormat.open().
1384
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1385
repository at a slightly different url
1386
than normal. I.e. during 'upgrade'.
1389
format = RepositoryFormat.find_format(a_bzrdir)
1390
assert format.__class__ == self.__class__
1391
if _override_transport is not None:
1392
repo_transport = _override_transport
1394
repo_transport = a_bzrdir.get_repository_transport(None)
1395
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1396
text_store = self._get_text_store(repo_transport, control_files)
1397
control_store = self._get_control_store(repo_transport, control_files)
1398
_revision_store = self._get_revision_store(repo_transport, control_files)
1399
return MetaDirRepository(_format=self,
1401
control_files=control_files,
1402
_revision_store=_revision_store,
1403
control_store=control_store,
1404
text_store=text_store)
1407
class RepositoryFormatKnit1(MetaDirRepositoryFormat):
1408
"""Bzr repository knit format 1.
1410
This repository format has:
1411
- knits for file texts and inventory
1412
- hash subdirectory based stores.
1413
- knits for revisions and signatures
1414
- TextStores for revisions and signatures.
1415
- a format marker of its own
1416
- an optional 'shared-storage' flag
1417
- an optional 'no-working-trees' flag
1420
This format was introduced in bzr 0.8.
1423
def _get_control_store(self, repo_transport, control_files):
1424
"""Return the control store for this repository."""
1425
return VersionedFileStore(
1428
file_mode=control_files._file_mode,
1429
versionedfile_class=KnitVersionedFile,
1430
versionedfile_kwargs={'factory':KnitPlainFactory()},
1433
def get_format_string(self):
1434
"""See RepositoryFormat.get_format_string()."""
1435
return "Bazaar-NG Knit Repository Format 1"
1437
def get_format_description(self):
1438
"""See RepositoryFormat.get_format_description()."""
1439
return "Knit repository format 1"
1441
def _get_revision_store(self, repo_transport, control_files):
1442
"""See RepositoryFormat._get_revision_store()."""
1443
from bzrlib.store.revision.knit import KnitRevisionStore
1444
versioned_file_store = VersionedFileStore(
1446
file_mode=control_files._file_mode,
1449
versionedfile_class=KnitVersionedFile,
1450
versionedfile_kwargs={'delta':False, 'factory':KnitPlainFactory()},
1453
return KnitRevisionStore(versioned_file_store)
1455
def _get_text_store(self, transport, control_files):
1456
"""See RepositoryFormat._get_text_store()."""
1457
return self._get_versioned_file_store('knits',
1460
versionedfile_class=KnitVersionedFile,
1463
def initialize(self, a_bzrdir, shared=False):
1464
"""Create a knit format 1 repository.
1466
:param a_bzrdir: bzrdir to contain the new repository; must already
1468
:param shared: If true the repository will be initialized as a shared
1471
mutter('creating repository in %s.', a_bzrdir.transport.base)
1472
dirs = ['revision-store', 'knits']
1474
utf8_files = [('format', self.get_format_string())]
1476
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1477
repo_transport = a_bzrdir.get_repository_transport(None)
1478
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1479
control_store = self._get_control_store(repo_transport, control_files)
1480
transaction = transactions.WriteTransaction()
1481
# trigger a write of the inventory store.
1482
control_store.get_weave_or_empty('inventory', transaction)
1483
_revision_store = self._get_revision_store(repo_transport, control_files)
1484
_revision_store.has_revision_id('A', transaction)
1485
_revision_store.get_signature_file(transaction)
1486
return self.open(a_bzrdir=a_bzrdir, _found=True)
1488
def open(self, a_bzrdir, _found=False, _override_transport=None):
1489
"""See RepositoryFormat.open().
1491
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1492
repository at a slightly different url
1493
than normal. I.e. during 'upgrade'.
1496
format = RepositoryFormat.find_format(a_bzrdir)
1497
assert format.__class__ == self.__class__
1498
if _override_transport is not None:
1499
repo_transport = _override_transport
1501
repo_transport = a_bzrdir.get_repository_transport(None)
1502
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1503
text_store = self._get_text_store(repo_transport, control_files)
1504
control_store = self._get_control_store(repo_transport, control_files)
1505
_revision_store = self._get_revision_store(repo_transport, control_files)
1506
return KnitRepository(_format=self,
1508
control_files=control_files,
1509
_revision_store=_revision_store,
1510
control_store=control_store,
1511
text_store=text_store)
1514
# formats which have no format string are not discoverable
1515
# and not independently creatable, so are not registered.
1516
RepositoryFormat.register_format(RepositoryFormat7())
1517
_default_format = RepositoryFormatKnit1()
1518
RepositoryFormat.register_format(_default_format)
1519
RepositoryFormat.set_default_format(_default_format)
1520
_legacy_formats = [RepositoryFormat4(),
1521
RepositoryFormat5(),
1522
RepositoryFormat6()]
3330
1525
class InterRepository(InterObject):
3331
1526
"""This class represents operations taking place between two repositories.
3333
1528
Its instances have methods like copy_content and fetch, and contain
3334
references to the source and target repositories these operations can be
1529
references to the source and target repositories these operations can be
3335
1530
carried out on.
3337
1532
Often we will provide convenience methods on 'repository' which carry out
3596
1745
# we do not have a revision as that would be pointless.
3597
1746
target_ids = set(self.target._all_possible_ids())
3598
1747
possibly_present_revisions = target_ids.intersection(source_ids_set)
3599
actually_present_revisions = set(
3600
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1748
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3601
1749
required_revisions = source_ids_set.difference(actually_present_revisions)
1750
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3602
1751
if revision_id is not None:
3603
1752
# we used get_ancestry to determine source_ids then we are assured all
3604
1753
# revisions referenced are present as they are installed in topological order.
3605
1754
# and the tip revision was validated by get_ancestry.
3606
result_set = required_revisions
1755
return required_topo_revisions
3608
# if we just grabbed the possibly available ids, then
1757
# if we just grabbed the possibly available ids, then
3609
1758
# we only have an estimate of whats available and need to validate
3610
1759
# that against the revision records.
3612
self.source._eliminate_revisions_not_present(required_revisions))
3613
return self.source.revision_ids_to_search_result(result_set)
3616
class InterKnitRepo(InterSameDataRepository):
1760
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1763
class InterKnitRepo(InterRepository):
3617
1764
"""Optimised code paths between Knit based repositories."""
3620
def _get_repo_format_to_test(self):
3621
from bzrlib.repofmt import knitrepo
3622
return knitrepo.RepositoryFormatKnit1()
1766
_matching_repo_format = RepositoryFormatKnit1()
1767
"""Repository format for testing with."""
3625
1770
def is_compatible(source, target):
3626
1771
"""Be compatible with known Knit formats.
3628
1773
We don't test for the stores being of specific types because that
3629
could lead to confusing results, and there is no need to be
1774
could lead to confusing results, and there is no need to be
3630
1775
overly general.
3632
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
3634
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
3635
isinstance(target._format, RepositoryFormatKnit))
1778
return (isinstance(source._format, (RepositoryFormatKnit1)) and
1779
isinstance(target._format, (RepositoryFormatKnit1)))
3636
1780
except AttributeError:
3638
return are_knits and InterRepository._same_model(source, target)
1784
def fetch(self, revision_id=None, pb=None):
1785
"""See InterRepository.fetch()."""
1786
from bzrlib.fetch import KnitRepoFetcher
1787
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1788
self.source, self.source._format, self.target, self.target._format)
1789
f = KnitRepoFetcher(to_repository=self.target,
1790
from_repository=self.source,
1791
last_revision=revision_id,
1793
return f.count_copied, f.failed_revisions
3640
1795
@needs_read_lock
3641
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1796
def missing_revision_ids(self, revision_id=None):
3642
1797
"""See InterRepository.missing_revision_ids()."""
3643
1798
if revision_id is not None:
3644
1799
source_ids = self.source.get_ancestry(revision_id)
3645
if source_ids[0] is not None:
3646
raise AssertionError()
1800
assert source_ids[0] == None
3647
1801
source_ids.pop(0)
3649
source_ids = self.source.all_revision_ids()
1803
source_ids = self.source._all_possible_ids()
3650
1804
source_ids_set = set(source_ids)
3651
1805
# source_ids is the worst possible case we may need to pull.
3652
1806
# now we want to filter source_ids against what we actually
3653
1807
# have in target, but don't try to check for existence where we know
3654
1808
# we do not have a revision as that would be pointless.
3655
target_ids = set(self.target.all_revision_ids())
1809
target_ids = set(self.target._all_possible_ids())
3656
1810
possibly_present_revisions = target_ids.intersection(source_ids_set)
3657
actually_present_revisions = set(
3658
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1811
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3659
1812
required_revisions = source_ids_set.difference(actually_present_revisions)
1813
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3660
1814
if revision_id is not None:
3661
1815
# we used get_ancestry to determine source_ids then we are assured all
3662
1816
# revisions referenced are present as they are installed in topological order.
3663
1817
# and the tip revision was validated by get_ancestry.
3664
result_set = required_revisions
1818
return required_topo_revisions
3666
# if we just grabbed the possibly available ids, then
1820
# if we just grabbed the possibly available ids, then
3667
1821
# we only have an estimate of whats available and need to validate
3668
1822
# that against the revision records.
3670
self.source._eliminate_revisions_not_present(required_revisions))
3671
return self.source.revision_ids_to_search_result(result_set)
3674
class InterDifferingSerializer(InterRepository):
3677
def _get_repo_format_to_test(self):
3681
def is_compatible(source, target):
3682
"""Be compatible with Knit2 source and Knit3 target"""
3683
# This is redundant with format.check_conversion_target(), however that
3684
# raises an exception, and we just want to say "False" as in we won't
3685
# support converting between these formats.
3686
if 'IDS_never' in debug.debug_flags:
3688
if source.supports_rich_root() and not target.supports_rich_root():
3690
if (source._format.supports_tree_reference
3691
and not target._format.supports_tree_reference):
3693
if target._fallback_repositories and target._format.supports_chks:
3694
# IDS doesn't know how to copy CHKs for the parent inventories it
3695
# adds to stacked repos.
3697
if 'IDS_always' in debug.debug_flags:
3699
# Only use this code path for local source and target. IDS does far
3700
# too much IO (both bandwidth and roundtrips) over a network.
3701
if not source.bzrdir.transport.base.startswith('file:///'):
3703
if not target.bzrdir.transport.base.startswith('file:///'):
3707
def _get_trees(self, revision_ids, cache):
3709
for rev_id in revision_ids:
3711
possible_trees.append((rev_id, cache[rev_id]))
3713
# Not cached, but inventory might be present anyway.
3715
tree = self.source.revision_tree(rev_id)
3716
except errors.NoSuchRevision:
3717
# Nope, parent is ghost.
3720
cache[rev_id] = tree
3721
possible_trees.append((rev_id, tree))
3722
return possible_trees
3724
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3725
"""Get the best delta and base for this revision.
3727
:return: (basis_id, delta)
3730
# Generate deltas against each tree, to find the shortest.
3731
texts_possibly_new_in_tree = set()
3732
for basis_id, basis_tree in possible_trees:
3733
delta = tree.inventory._make_delta(basis_tree.inventory)
3734
for old_path, new_path, file_id, new_entry in delta:
3735
if new_path is None:
3736
# This file_id isn't present in the new rev, so we don't
3740
# Rich roots are handled elsewhere...
3742
kind = new_entry.kind
3743
if kind != 'directory' and kind != 'file':
3744
# No text record associated with this inventory entry.
3746
# This is a directory or file that has changed somehow.
3747
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3748
deltas.append((len(delta), basis_id, delta))
3750
return deltas[0][1:]
3752
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3753
"""Find all parent revisions that are absent, but for which the
3754
inventory is present, and copy those inventories.
3756
This is necessary to preserve correctness when the source is stacked
3757
without fallbacks configured. (Note that in cases like upgrade the
3758
source may be not have _fallback_repositories even though it is
3762
for parents in parent_map.values():
3763
parent_revs.update(parents)
3764
present_parents = self.source.get_parent_map(parent_revs)
3765
absent_parents = set(parent_revs).difference(present_parents)
3766
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3767
(rev_id,) for rev_id in absent_parents)
3768
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3769
for parent_tree in self.source.revision_trees(parent_inv_ids):
3770
current_revision_id = parent_tree.get_revision_id()
3771
parents_parents_keys = parent_invs_keys_for_stacking[
3772
(current_revision_id,)]
3773
parents_parents = [key[-1] for key in parents_parents_keys]
3774
basis_id = _mod_revision.NULL_REVISION
3775
basis_tree = self.source.revision_tree(basis_id)
3776
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3777
self.target.add_inventory_by_delta(
3778
basis_id, delta, current_revision_id, parents_parents)
3779
cache[current_revision_id] = parent_tree
3781
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3782
"""Fetch across a few revisions.
3784
:param revision_ids: The revisions to copy
3785
:param basis_id: The revision_id of a tree that must be in cache, used
3786
as a basis for delta when no other base is available
3787
:param cache: A cache of RevisionTrees that we can use.
3788
:param a_graph: A Graph object to determine the heads() of the
3789
rich-root data stream.
3790
:return: The revision_id of the last converted tree. The RevisionTree
3791
for it will be in cache
3793
# Walk though all revisions; get inventory deltas, copy referenced
3794
# texts that delta references, insert the delta, revision and
3796
root_keys_to_create = set()
3799
pending_revisions = []
3800
parent_map = self.source.get_parent_map(revision_ids)
3801
self._fetch_parent_invs_for_stacking(parent_map, cache)
3802
self.source._safe_to_return_from_cache = True
3803
for tree in self.source.revision_trees(revision_ids):
3804
# Find a inventory delta for this revision.
3805
# Find text entries that need to be copied, too.
3806
current_revision_id = tree.get_revision_id()
3807
parent_ids = parent_map.get(current_revision_id, ())
3808
parent_trees = self._get_trees(parent_ids, cache)
3809
possible_trees = list(parent_trees)
3810
if len(possible_trees) == 0:
3811
# There either aren't any parents, or the parents are ghosts,
3812
# so just use the last converted tree.
3813
possible_trees.append((basis_id, cache[basis_id]))
3814
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3816
revision = self.source.get_revision(current_revision_id)
3817
pending_deltas.append((basis_id, delta,
3818
current_revision_id, revision.parent_ids))
3819
if self._converting_to_rich_root:
3820
self._revision_id_to_root_id[current_revision_id] = \
3822
# Determine which texts are in present in this revision but not in
3823
# any of the available parents.
3824
texts_possibly_new_in_tree = set()
3825
for old_path, new_path, file_id, entry in delta:
3826
if new_path is None:
3827
# This file_id isn't present in the new rev
3831
if not self.target.supports_rich_root():
3832
# The target doesn't support rich root, so we don't
3835
if self._converting_to_rich_root:
3836
# This can't be copied normally, we have to insert
3838
root_keys_to_create.add((file_id, entry.revision))
3841
texts_possibly_new_in_tree.add((file_id, entry.revision))
3842
for basis_id, basis_tree in possible_trees:
3843
basis_inv = basis_tree.inventory
3844
for file_key in list(texts_possibly_new_in_tree):
3845
file_id, file_revision = file_key
3847
entry = basis_inv[file_id]
3848
except errors.NoSuchId:
3850
if entry.revision == file_revision:
3851
texts_possibly_new_in_tree.remove(file_key)
3852
text_keys.update(texts_possibly_new_in_tree)
3853
pending_revisions.append(revision)
3854
cache[current_revision_id] = tree
3855
basis_id = current_revision_id
3856
self.source._safe_to_return_from_cache = False
3858
from_texts = self.source.texts
3859
to_texts = self.target.texts
3860
if root_keys_to_create:
3861
root_stream = _mod_fetch._new_root_data_stream(
3862
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3863
self.source, graph=a_graph)
3864
to_texts.insert_record_stream(root_stream)
3865
to_texts.insert_record_stream(from_texts.get_record_stream(
3866
text_keys, self.target._format._fetch_order,
3867
not self.target._format._fetch_uses_deltas))
3868
# insert inventory deltas
3869
for delta in pending_deltas:
3870
self.target.add_inventory_by_delta(*delta)
3871
if self.target._fallback_repositories:
3872
# Make sure this stacked repository has all the parent inventories
3873
# for the new revisions that we are about to insert. We do this
3874
# before adding the revisions so that no revision is added until
3875
# all the inventories it may depend on are added.
3876
# Note that this is overzealous, as we may have fetched these in an
3879
revision_ids = set()
3880
for revision in pending_revisions:
3881
revision_ids.add(revision.revision_id)
3882
parent_ids.update(revision.parent_ids)
3883
parent_ids.difference_update(revision_ids)
3884
parent_ids.discard(_mod_revision.NULL_REVISION)
3885
parent_map = self.source.get_parent_map(parent_ids)
3886
# we iterate over parent_map and not parent_ids because we don't
3887
# want to try copying any revision which is a ghost
3888
for parent_tree in self.source.revision_trees(parent_map):
3889
current_revision_id = parent_tree.get_revision_id()
3890
parents_parents = parent_map[current_revision_id]
3891
possible_trees = self._get_trees(parents_parents, cache)
3892
if len(possible_trees) == 0:
3893
# There either aren't any parents, or the parents are
3894
# ghosts, so just use the last converted tree.
3895
possible_trees.append((basis_id, cache[basis_id]))
3896
basis_id, delta = self._get_delta_for_revision(parent_tree,
3897
parents_parents, possible_trees)
3898
self.target.add_inventory_by_delta(
3899
basis_id, delta, current_revision_id, parents_parents)
3900
# insert signatures and revisions
3901
for revision in pending_revisions:
3903
signature = self.source.get_signature_text(
3904
revision.revision_id)
3905
self.target.add_signature_text(revision.revision_id,
3907
except errors.NoSuchRevision:
3909
self.target.add_revision(revision.revision_id, revision)
3912
def _fetch_all_revisions(self, revision_ids, pb):
3913
"""Fetch everything for the list of revisions.
3915
:param revision_ids: The list of revisions to fetch. Must be in
3917
:param pb: A ProgressTask
3920
basis_id, basis_tree = self._get_basis(revision_ids[0])
3922
cache = lru_cache.LRUCache(100)
3923
cache[basis_id] = basis_tree
3924
del basis_tree # We don't want to hang on to it here
3926
if self._converting_to_rich_root and len(revision_ids) > 100:
3927
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3932
for offset in range(0, len(revision_ids), batch_size):
3933
self.target.start_write_group()
3935
pb.update('Transferring revisions', offset,
3937
batch = revision_ids[offset:offset+batch_size]
3938
basis_id = self._fetch_batch(batch, basis_id, cache,
3941
self.source._safe_to_return_from_cache = False
3942
self.target.abort_write_group()
3945
hint = self.target.commit_write_group()
3948
if hints and self.target._format.pack_compresses:
3949
self.target.pack(hint=hints)
3950
pb.update('Transferring revisions', len(revision_ids),
3954
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
3956
"""See InterRepository.fetch()."""
3957
if fetch_spec is not None:
3958
raise AssertionError("Not implemented yet...")
3959
# See <https://launchpad.net/bugs/456077> asking for a warning here
3961
# nb this is only active for local-local fetches; other things using
3963
ui.ui_factory.warn_cross_format_fetch(self.source._format,
3964
self.target._format)
3965
ui.ui_factory.warn_experimental_format_fetch(self)
3966
if (not self.source.supports_rich_root()
3967
and self.target.supports_rich_root()):
3968
self._converting_to_rich_root = True
3969
self._revision_id_to_root_id = {}
3971
self._converting_to_rich_root = False
3972
revision_ids = self.target.search_missing_revision_ids(self.source,
3973
revision_id, find_ghosts=find_ghosts).get_keys()
3974
if not revision_ids:
3976
revision_ids = tsort.topo_sort(
3977
self.source.get_graph().get_parent_map(revision_ids))
3978
if not revision_ids:
3980
# Walk though all revisions; get inventory deltas, copy referenced
3981
# texts that delta references, insert the delta, revision and
3984
my_pb = ui.ui_factory.nested_progress_bar()
3987
symbol_versioning.warn(
3988
symbol_versioning.deprecated_in((1, 14, 0))
3989
% "pb parameter to fetch()")
3992
self._fetch_all_revisions(revision_ids, pb)
3994
if my_pb is not None:
3996
return len(revision_ids), 0
3998
def _get_basis(self, first_revision_id):
3999
"""Get a revision and tree which exists in the target.
4001
This assumes that first_revision_id is selected for transmission
4002
because all other ancestors are already present. If we can't find an
4003
ancestor we fall back to NULL_REVISION since we know that is safe.
4005
:return: (basis_id, basis_tree)
4007
first_rev = self.source.get_revision(first_revision_id)
4009
basis_id = first_rev.parent_ids[0]
4010
# only valid as a basis if the target has it
4011
self.target.get_revision(basis_id)
4012
# Try to get a basis tree - if its a ghost it will hit the
4013
# NoSuchRevision case.
4014
basis_tree = self.source.revision_tree(basis_id)
4015
except (IndexError, errors.NoSuchRevision):
4016
basis_id = _mod_revision.NULL_REVISION
4017
basis_tree = self.source.revision_tree(basis_id)
4018
return basis_id, basis_tree
4021
InterRepository.register_optimiser(InterDifferingSerializer)
4022
InterRepository.register_optimiser(InterSameDataRepository)
1823
return self.source._eliminate_revisions_not_present(required_topo_revisions)
4023
1825
InterRepository.register_optimiser(InterWeaveRepo)
4024
1826
InterRepository.register_optimiser(InterKnitRepo)
1829
class RepositoryTestProviderAdapter(object):
1830
"""A tool to generate a suite testing multiple repository formats at once.
1832
This is done by copying the test once for each transport and injecting
1833
the transport_server, transport_readonly_server, and bzrdir_format and
1834
repository_format classes into each copy. Each copy is also given a new id()
1835
to make it easy to identify.
1838
def __init__(self, transport_server, transport_readonly_server, formats):
1839
self._transport_server = transport_server
1840
self._transport_readonly_server = transport_readonly_server
1841
self._formats = formats
1843
def adapt(self, test):
1844
result = TestSuite()
1845
for repository_format, bzrdir_format in self._formats:
1846
new_test = deepcopy(test)
1847
new_test.transport_server = self._transport_server
1848
new_test.transport_readonly_server = self._transport_readonly_server
1849
new_test.bzrdir_format = bzrdir_format
1850
new_test.repository_format = repository_format
1851
def make_new_test_id():
1852
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
1853
return lambda: new_id
1854
new_test.id = make_new_test_id()
1855
result.addTest(new_test)
1859
class InterRepositoryTestProviderAdapter(object):
1860
"""A tool to generate a suite testing multiple inter repository formats.
1862
This is done by copying the test once for each interrepo provider and injecting
1863
the transport_server, transport_readonly_server, repository_format and
1864
repository_to_format classes into each copy.
1865
Each copy is also given a new id() to make it easy to identify.
1868
def __init__(self, transport_server, transport_readonly_server, formats):
1869
self._transport_server = transport_server
1870
self._transport_readonly_server = transport_readonly_server
1871
self._formats = formats
1873
def adapt(self, test):
1874
result = TestSuite()
1875
for interrepo_class, repository_format, repository_format_to in self._formats:
1876
new_test = deepcopy(test)
1877
new_test.transport_server = self._transport_server
1878
new_test.transport_readonly_server = self._transport_readonly_server
1879
new_test.interrepo_class = interrepo_class
1880
new_test.repository_format = repository_format
1881
new_test.repository_format_to = repository_format_to
1882
def make_new_test_id():
1883
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
1884
return lambda: new_id
1885
new_test.id = make_new_test_id()
1886
result.addTest(new_test)
1890
def default_test_list():
1891
"""Generate the default list of interrepo permutations to test."""
1893
# test the default InterRepository between format 6 and the current
1895
# XXX: robertc 20060220 reinstate this when there are two supported
1896
# formats which do not have an optimal code path between them.
1897
result.append((InterRepository,
1898
RepositoryFormat6(),
1899
RepositoryFormatKnit1()))
1900
for optimiser in InterRepository._optimisers:
1901
result.append((optimiser,
1902
optimiser._matching_repo_format,
1903
optimiser._matching_repo_format
1905
# if there are specific combinations we want to use, we can add them
4027
1910
class CopyConverter(object):
4028
1911
"""A repository conversion tool which just performs a copy of the content.
4030
1913
This is slow but quite reliable.
4036
1919
:param target_format: The format the resulting repository should be.
4038
1921
self.target_format = target_format
4040
1923
def convert(self, repo, pb):
4041
1924
"""Perform the conversion of to_convert, giving feedback via pb.
4043
1926
:param to_convert: The disk object to convert.
4044
1927
:param pb: a progress bar to use for progress information.
4046
pb = ui.ui_factory.nested_progress_bar()
4049
1932
# this is only useful with metadir layouts - separated repo content.
4050
1933
# trigger an assertion if not such
4051
1934
repo._format.get_format_string()
4052
1935
self.repo_dir = repo.bzrdir
4053
pb.update('Moving repository to repository.backup')
1936
self.step('Moving repository to repository.backup')
4054
1937
self.repo_dir.transport.move('repository', 'repository.backup')
4055
1938
backup_transport = self.repo_dir.transport.clone('repository.backup')
4056
repo._format.check_conversion_target(self.target_format)
4057
1939
self.source_repo = repo._format.open(self.repo_dir,
4059
1941
_override_transport=backup_transport)
4060
pb.update('Creating new repository')
1942
self.step('Creating new repository')
4061
1943
converted = self.target_format.initialize(self.repo_dir,
4062
1944
self.source_repo.is_shared())
4063
1945
converted.lock_write()
4065
pb.update('Copying content')
1947
self.step('Copying content into repository.')
4066
1948
self.source_repo.copy_content_into(converted)
4068
1950
converted.unlock()
4069
pb.update('Deleting old repository content')
1951
self.step('Deleting old repository content.')
4070
1952
self.repo_dir.transport.delete_tree('repository.backup')
4071
ui.ui_factory.note('repository converted')
4084
def _unescaper(match, _map=_unescape_map):
4085
code = match.group(1)
4089
if not code.startswith('#'):
4091
return unichr(int(code[1:])).encode('utf8')
1953
self.pb.note('repository converted')
1955
def step(self, message):
1956
"""Update the pb by a step."""
1958
self.pb.update(message, self.count, self.total)
1961
class CommitBuilder(object):
1962
"""Provides an interface to build up a commit.
1964
This allows describing a tree to be committed without needing to
1965
know the internals of the format of the repository.
1967
def __init__(self, repository, parents, config, timestamp=None,
1968
timezone=None, committer=None, revprops=None,
1970
"""Initiate a CommitBuilder.
1972
:param repository: Repository to commit to.
1973
:param parents: Revision ids of the parents of the new revision.
1974
:param config: Configuration to use.
1975
:param timestamp: Optional timestamp recorded for commit.
1976
:param timezone: Optional timezone for timestamp.
1977
:param committer: Optional committer to set for commit.
1978
:param revprops: Optional dictionary of revision properties.
1979
:param revision_id: Optional revision id.
1981
self._config = config
1983
if committer is None:
1984
self._committer = self._config.username()
1986
assert isinstance(committer, basestring), type(committer)
1987
self._committer = committer
1989
self.new_inventory = Inventory()
1990
self._new_revision_id = revision_id
1991
self.parents = parents
1992
self.repository = repository
1995
if revprops is not None:
1996
self._revprops.update(revprops)
1998
if timestamp is None:
1999
self._timestamp = time.time()
2001
self._timestamp = long(timestamp)
2003
if timezone is None:
2004
self._timezone = local_time_offset()
2006
self._timezone = int(timezone)
2008
self._generate_revision_if_needed()
2010
def commit(self, message):
2011
"""Make the actual commit.
2013
:return: The revision id of the recorded revision.
2015
rev = Revision(timestamp=self._timestamp,
2016
timezone=self._timezone,
2017
committer=self._committer,
2019
inventory_sha1=self.inv_sha1,
2020
revision_id=self._new_revision_id,
2021
properties=self._revprops)
2022
rev.parent_ids = self.parents
2023
self.repository.add_revision(self._new_revision_id, rev,
2024
self.new_inventory, self._config)
2025
return self._new_revision_id
2027
def finish_inventory(self):
2028
"""Tell the builder that the inventory is finished."""
2029
self.new_inventory.revision_id = self._new_revision_id
2030
self.inv_sha1 = self.repository.add_inventory(
2031
self._new_revision_id,
2036
def _gen_revision_id(self):
2037
"""Return new revision-id."""
2038
s = '%s-%s-' % (self._config.user_email(),
2039
compact_date(self._timestamp))
2040
s += hexlify(rand_bytes(8))
2043
def _generate_revision_if_needed(self):
2044
"""Create a revision id if None was supplied.
2046
If the repository can not support user-specified revision ids
2047
they should override this function and raise UnsupportedOperation
2048
if _new_revision_id is not None.
2050
:raises: UnsupportedOperation
2052
if self._new_revision_id is None:
2053
self._new_revision_id = self._gen_revision_id()
2055
def record_entry_contents(self, ie, parent_invs, path, tree):
2056
"""Record the content of ie from tree into the commit if needed.
2058
:param ie: An inventory entry present in the commit.
2059
:param parent_invs: The inventories of the parent revisions of the
2061
:param path: The path the entry is at in the tree.
2062
:param tree: The tree which contains this entry and should be used to
2065
self.new_inventory.add(ie)
2067
# ie.revision is always None if the InventoryEntry is considered
2068
# for committing. ie.snapshot will record the correct revision
2069
# which may be the sole parent if it is untouched.
2070
if ie.revision is not None:
2072
previous_entries = ie.find_previous_heads(
2074
self.repository.weave_store,
2075
self.repository.get_transaction())
2076
# we are creating a new revision for ie in the history store
2078
ie.snapshot(self._new_revision_id, path, previous_entries, tree, self)
2080
def modified_directory(self, file_id, file_parents):
2081
"""Record the presence of a symbolic link.
2083
:param file_id: The file_id of the link to record.
2084
:param file_parents: The per-file parent revision ids.
2086
self._add_text_to_weave(file_id, [], file_parents.keys())
2088
def modified_file_text(self, file_id, file_parents,
2089
get_content_byte_lines, text_sha1=None,
2091
"""Record the text of file file_id
2093
:param file_id: The file_id of the file to record the text of.
2094
:param file_parents: The per-file parent revision ids.
2095
:param get_content_byte_lines: A callable which will return the byte
2097
:param text_sha1: Optional SHA1 of the file contents.
2098
:param text_size: Optional size of the file contents.
2100
mutter('storing text of file {%s} in revision {%s} into %r',
2101
file_id, self._new_revision_id, self.repository.weave_store)
2102
# special case to avoid diffing on renames or
2104
if (len(file_parents) == 1
2105
and text_sha1 == file_parents.values()[0].text_sha1
2106
and text_size == file_parents.values()[0].text_size):
2107
previous_ie = file_parents.values()[0]
2108
versionedfile = self.repository.weave_store.get_weave(file_id,
2109
self.repository.get_transaction())
2110
versionedfile.clone_text(self._new_revision_id,
2111
previous_ie.revision, file_parents.keys())
2112
return text_sha1, text_size
2114
new_lines = get_content_byte_lines()
2115
# TODO: Rather than invoking sha_strings here, _add_text_to_weave
2116
# should return the SHA1 and size
2117
self._add_text_to_weave(file_id, new_lines, file_parents.keys())
2118
return osutils.sha_strings(new_lines), \
2119
sum(map(len, new_lines))
2121
def modified_link(self, file_id, file_parents, link_target):
2122
"""Record the presence of a symbolic link.
2124
:param file_id: The file_id of the link to record.
2125
:param file_parents: The per-file parent revision ids.
2126
:param link_target: Target location of this link.
2128
self._add_text_to_weave(file_id, [], file_parents.keys())
2130
def _add_text_to_weave(self, file_id, new_lines, parents):
2131
versionedfile = self.repository.weave_store.get_weave_or_empty(
2132
file_id, self.repository.get_transaction())
2133
versionedfile.add_lines(self._new_revision_id, parents, new_lines)
2134
versionedfile.clear_cache()
2137
# Copied from xml.sax.saxutils
4097
2138
def _unescape_xml(data):
4098
"""Unescape predefined XML entities in a string of data."""
4100
if _unescape_re is None:
4101
_unescape_re = re.compile('\&([^;]*);')
4102
return _unescape_re.sub(_unescaper, data)
4105
class _VersionedFileChecker(object):
4107
def __init__(self, repository, text_key_references=None, ancestors=None):
4108
self.repository = repository
4109
self.text_index = self.repository._generate_text_key_index(
4110
text_key_references=text_key_references, ancestors=ancestors)
4112
def calculate_file_version_parents(self, text_key):
4113
"""Calculate the correct parents for a file version according to
4116
parent_keys = self.text_index[text_key]
4117
if parent_keys == [_mod_revision.NULL_REVISION]:
4119
return tuple(parent_keys)
4121
def check_file_version_parents(self, texts, progress_bar=None):
4122
"""Check the parents stored in a versioned file are correct.
4124
It also detects file versions that are not referenced by their
4125
corresponding revision's inventory.
4127
:returns: A tuple of (wrong_parents, dangling_file_versions).
4128
wrong_parents is a dict mapping {revision_id: (stored_parents,
4129
correct_parents)} for each revision_id where the stored parents
4130
are not correct. dangling_file_versions is a set of (file_id,
4131
revision_id) tuples for versions that are present in this versioned
4132
file, but not used by the corresponding inventory.
4134
local_progress = None
4135
if progress_bar is None:
4136
local_progress = ui.ui_factory.nested_progress_bar()
4137
progress_bar = local_progress
4139
return self._check_file_version_parents(texts, progress_bar)
4142
local_progress.finished()
4144
def _check_file_version_parents(self, texts, progress_bar):
4145
"""See check_file_version_parents."""
4147
self.file_ids = set([file_id for file_id, _ in
4148
self.text_index.iterkeys()])
4149
# text keys is now grouped by file_id
4150
n_versions = len(self.text_index)
4151
progress_bar.update('loading text store', 0, n_versions)
4152
parent_map = self.repository.texts.get_parent_map(self.text_index)
4153
# On unlistable transports this could well be empty/error...
4154
text_keys = self.repository.texts.keys()
4155
unused_keys = frozenset(text_keys) - set(self.text_index)
4156
for num, key in enumerate(self.text_index.iterkeys()):
4157
progress_bar.update('checking text graph', num, n_versions)
4158
correct_parents = self.calculate_file_version_parents(key)
4160
knit_parents = parent_map[key]
4161
except errors.RevisionNotPresent:
4164
if correct_parents != knit_parents:
4165
wrong_parents[key] = (knit_parents, correct_parents)
4166
return wrong_parents, unused_keys
4169
def _old_get_graph(repository, revision_id):
4170
"""DO NOT USE. That is all. I'm serious."""
4171
graph = repository.get_graph()
4172
revision_graph = dict(((key, value) for key, value in
4173
graph.iter_ancestry([revision_id]) if value is not None))
4174
return _strip_NULL_ghosts(revision_graph)
4177
def _strip_NULL_ghosts(revision_graph):
4178
"""Also don't use this. more compatibility code for unmigrated clients."""
4179
# Filter ghosts, and null:
4180
if _mod_revision.NULL_REVISION in revision_graph:
4181
del revision_graph[_mod_revision.NULL_REVISION]
4182
for key, parents in revision_graph.items():
4183
revision_graph[key] = tuple(parent for parent in parents if parent
4185
return revision_graph
4188
class StreamSink(object):
4189
"""An object that can insert a stream into a repository.
4191
This interface handles the complexity of reserialising inventories and
4192
revisions from different formats, and allows unidirectional insertion into
4193
stacked repositories without looking for the missing basis parents
4197
def __init__(self, target_repo):
4198
self.target_repo = target_repo
4200
def insert_stream(self, stream, src_format, resume_tokens):
4201
"""Insert a stream's content into the target repository.
4203
:param src_format: a bzr repository format.
4205
:return: a list of resume tokens and an iterable of keys additional
4206
items required before the insertion can be completed.
4208
self.target_repo.lock_write()
4211
self.target_repo.resume_write_group(resume_tokens)
4214
self.target_repo.start_write_group()
4217
# locked_insert_stream performs a commit|suspend.
4218
return self._locked_insert_stream(stream, src_format, is_resume)
4220
self.target_repo.abort_write_group(suppress_errors=True)
4223
self.target_repo.unlock()
4225
def _locked_insert_stream(self, stream, src_format, is_resume):
4226
to_serializer = self.target_repo._format._serializer
4227
src_serializer = src_format._serializer
4229
if to_serializer == src_serializer:
4230
# If serializers match and the target is a pack repository, set the
4231
# write cache size on the new pack. This avoids poor performance
4232
# on transports where append is unbuffered (such as
4233
# RemoteTransport). This is safe to do because nothing should read
4234
# back from the target repository while a stream with matching
4235
# serialization is being inserted.
4236
# The exception is that a delta record from the source that should
4237
# be a fulltext may need to be expanded by the target (see
4238
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4239
# explicitly flush any buffered writes first in that rare case.
4241
new_pack = self.target_repo._pack_collection._new_pack
4242
except AttributeError:
4243
# Not a pack repository
4246
new_pack.set_write_cache_size(1024*1024)
4247
for substream_type, substream in stream:
4248
if 'stream' in debug.debug_flags:
4249
mutter('inserting substream: %s', substream_type)
4250
if substream_type == 'texts':
4251
self.target_repo.texts.insert_record_stream(substream)
4252
elif substream_type == 'inventories':
4253
if src_serializer == to_serializer:
4254
self.target_repo.inventories.insert_record_stream(
4257
self._extract_and_insert_inventories(
4258
substream, src_serializer)
4259
elif substream_type == 'inventory-deltas':
4260
ui.ui_factory.warn_cross_format_fetch(src_format,
4261
self.target_repo._format)
4262
self._extract_and_insert_inventory_deltas(
4263
substream, src_serializer)
4264
elif substream_type == 'chk_bytes':
4265
# XXX: This doesn't support conversions, as it assumes the
4266
# conversion was done in the fetch code.
4267
self.target_repo.chk_bytes.insert_record_stream(substream)
4268
elif substream_type == 'revisions':
4269
# This may fallback to extract-and-insert more often than
4270
# required if the serializers are different only in terms of
4272
if src_serializer == to_serializer:
4273
self.target_repo.revisions.insert_record_stream(
4276
self._extract_and_insert_revisions(substream,
4278
elif substream_type == 'signatures':
4279
self.target_repo.signatures.insert_record_stream(substream)
4281
raise AssertionError('kaboom! %s' % (substream_type,))
4282
# Done inserting data, and the missing_keys calculations will try to
4283
# read back from the inserted data, so flush the writes to the new pack
4284
# (if this is pack format).
4285
if new_pack is not None:
4286
new_pack._write_data('', flush=True)
4287
# Find all the new revisions (including ones from resume_tokens)
4288
missing_keys = self.target_repo.get_missing_parent_inventories(
4289
check_for_missing_texts=is_resume)
4291
for prefix, versioned_file in (
4292
('texts', self.target_repo.texts),
4293
('inventories', self.target_repo.inventories),
4294
('revisions', self.target_repo.revisions),
4295
('signatures', self.target_repo.signatures),
4296
('chk_bytes', self.target_repo.chk_bytes),
4298
if versioned_file is None:
4300
# TODO: key is often going to be a StaticTuple object
4301
# I don't believe we can define a method by which
4302
# (prefix,) + StaticTuple will work, though we could
4303
# define a StaticTuple.sq_concat that would allow you to
4304
# pass in either a tuple or a StaticTuple as the second
4305
# object, so instead we could have:
4306
# StaticTuple(prefix) + key here...
4307
missing_keys.update((prefix,) + key for key in
4308
versioned_file.get_missing_compression_parent_keys())
4309
except NotImplementedError:
4310
# cannot even attempt suspending, and missing would have failed
4311
# during stream insertion.
4312
missing_keys = set()
4315
# suspend the write group and tell the caller what we is
4316
# missing. We know we can suspend or else we would not have
4317
# entered this code path. (All repositories that can handle
4318
# missing keys can handle suspending a write group).
4319
write_group_tokens = self.target_repo.suspend_write_group()
4320
return write_group_tokens, missing_keys
4321
hint = self.target_repo.commit_write_group()
4322
if (to_serializer != src_serializer and
4323
self.target_repo._format.pack_compresses):
4324
self.target_repo.pack(hint=hint)
4327
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4328
target_rich_root = self.target_repo._format.rich_root_data
4329
target_tree_refs = self.target_repo._format.supports_tree_reference
4330
for record in substream:
4331
# Insert the delta directly
4332
inventory_delta_bytes = record.get_bytes_as('fulltext')
4333
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4335
parse_result = deserialiser.parse_text_bytes(
4336
inventory_delta_bytes)
4337
except inventory_delta.IncompatibleInventoryDelta, err:
4338
trace.mutter("Incompatible delta: %s", err.msg)
4339
raise errors.IncompatibleRevision(self.target_repo._format)
4340
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4341
revision_id = new_id
4342
parents = [key[0] for key in record.parents]
4343
self.target_repo.add_inventory_by_delta(
4344
basis_id, inv_delta, revision_id, parents)
4346
def _extract_and_insert_inventories(self, substream, serializer,
4348
"""Generate a new inventory versionedfile in target, converting data.
4350
The inventory is retrieved from the source, (deserializing it), and
4351
stored in the target (reserializing it in a different format).
4353
target_rich_root = self.target_repo._format.rich_root_data
4354
target_tree_refs = self.target_repo._format.supports_tree_reference
4355
for record in substream:
4356
# It's not a delta, so it must be a fulltext in the source
4357
# serializer's format.
4358
bytes = record.get_bytes_as('fulltext')
4359
revision_id = record.key[0]
4360
inv = serializer.read_inventory_from_string(bytes, revision_id)
4361
parents = [key[0] for key in record.parents]
4362
self.target_repo.add_inventory(revision_id, inv, parents)
4363
# No need to keep holding this full inv in memory when the rest of
4364
# the substream is likely to be all deltas.
4367
def _extract_and_insert_revisions(self, substream, serializer):
4368
for record in substream:
4369
bytes = record.get_bytes_as('fulltext')
4370
revision_id = record.key[0]
4371
rev = serializer.read_revision_from_string(bytes)
4372
if rev.revision_id != revision_id:
4373
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4374
self.target_repo.add_revision(revision_id, rev)
4377
if self.target_repo._format._fetch_reconcile:
4378
self.target_repo.reconcile()
4381
class StreamSource(object):
4382
"""A source of a stream for fetching between repositories."""
4384
def __init__(self, from_repository, to_format):
4385
"""Create a StreamSource streaming from from_repository."""
4386
self.from_repository = from_repository
4387
self.to_format = to_format
4389
def delta_on_metadata(self):
4390
"""Return True if delta's are permitted on metadata streams.
4392
That is on revisions and signatures.
4394
src_serializer = self.from_repository._format._serializer
4395
target_serializer = self.to_format._serializer
4396
return (self.to_format._fetch_uses_deltas and
4397
src_serializer == target_serializer)
4399
def _fetch_revision_texts(self, revs):
4400
# fetch signatures first and then the revision texts
4401
# may need to be a InterRevisionStore call here.
4402
from_sf = self.from_repository.signatures
4403
# A missing signature is just skipped.
4404
keys = [(rev_id,) for rev_id in revs]
4405
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4407
self.to_format._fetch_order,
4408
not self.to_format._fetch_uses_deltas))
4409
# If a revision has a delta, this is actually expanded inside the
4410
# insert_record_stream code now, which is an alternate fix for
4412
from_rf = self.from_repository.revisions
4413
revisions = from_rf.get_record_stream(
4415
self.to_format._fetch_order,
4416
not self.delta_on_metadata())
4417
return [('signatures', signatures), ('revisions', revisions)]
4419
def _generate_root_texts(self, revs):
4420
"""This will be called by get_stream between fetching weave texts and
4421
fetching the inventory weave.
4423
if self._rich_root_upgrade():
4424
return _mod_fetch.Inter1and2Helper(
4425
self.from_repository).generate_root_texts(revs)
4429
def get_stream(self, search):
4431
revs = search.get_keys()
4432
graph = self.from_repository.get_graph()
4433
revs = tsort.topo_sort(graph.get_parent_map(revs))
4434
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4436
for knit_kind, file_id, revisions in data_to_fetch:
4437
if knit_kind != phase:
4439
# Make a new progress bar for this phase
4440
if knit_kind == "file":
4441
# Accumulate file texts
4442
text_keys.extend([(file_id, revision) for revision in
4444
elif knit_kind == "inventory":
4445
# Now copy the file texts.
4446
from_texts = self.from_repository.texts
4447
yield ('texts', from_texts.get_record_stream(
4448
text_keys, self.to_format._fetch_order,
4449
not self.to_format._fetch_uses_deltas))
4450
# Cause an error if a text occurs after we have done the
4453
# Before we process the inventory we generate the root
4454
# texts (if necessary) so that the inventories references
4456
for _ in self._generate_root_texts(revs):
4458
# we fetch only the referenced inventories because we do not
4459
# know for unselected inventories whether all their required
4460
# texts are present in the other repository - it could be
4462
for info in self._get_inventory_stream(revs):
4464
elif knit_kind == "signatures":
4465
# Nothing to do here; this will be taken care of when
4466
# _fetch_revision_texts happens.
4468
elif knit_kind == "revisions":
4469
for record in self._fetch_revision_texts(revs):
4472
raise AssertionError("Unknown knit kind %r" % knit_kind)
4474
def get_stream_for_missing_keys(self, missing_keys):
4475
# missing keys can only occur when we are byte copying and not
4476
# translating (because translation means we don't send
4477
# unreconstructable deltas ever).
4479
keys['texts'] = set()
4480
keys['revisions'] = set()
4481
keys['inventories'] = set()
4482
keys['chk_bytes'] = set()
4483
keys['signatures'] = set()
4484
for key in missing_keys:
4485
keys[key[0]].add(key[1:])
4486
if len(keys['revisions']):
4487
# If we allowed copying revisions at this point, we could end up
4488
# copying a revision without copying its required texts: a
4489
# violation of the requirements for repository integrity.
4490
raise AssertionError(
4491
'cannot copy revisions to fill in missing deltas %s' % (
4492
keys['revisions'],))
4493
for substream_kind, keys in keys.iteritems():
4494
vf = getattr(self.from_repository, substream_kind)
4495
if vf is None and keys:
4496
raise AssertionError(
4497
"cannot fill in keys for a versioned file we don't"
4498
" have: %s needs %s" % (substream_kind, keys))
4500
# No need to stream something we don't have
4502
if substream_kind == 'inventories':
4503
# Some missing keys are genuinely ghosts, filter those out.
4504
present = self.from_repository.inventories.get_parent_map(keys)
4505
revs = [key[0] for key in present]
4506
# Get the inventory stream more-or-less as we do for the
4507
# original stream; there's no reason to assume that records
4508
# direct from the source will be suitable for the sink. (Think
4509
# e.g. 2a -> 1.9-rich-root).
4510
for info in self._get_inventory_stream(revs, missing=True):
4514
# Ask for full texts always so that we don't need more round trips
4515
# after this stream.
4516
# Some of the missing keys are genuinely ghosts, so filter absent
4517
# records. The Sink is responsible for doing another check to
4518
# ensure that ghosts don't introduce missing data for future
4520
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4521
self.to_format._fetch_order, True))
4522
yield substream_kind, stream
4524
def inventory_fetch_order(self):
4525
if self._rich_root_upgrade():
4526
return 'topological'
4528
return self.to_format._fetch_order
4530
def _rich_root_upgrade(self):
4531
return (not self.from_repository._format.rich_root_data and
4532
self.to_format.rich_root_data)
4534
def _get_inventory_stream(self, revision_ids, missing=False):
4535
from_format = self.from_repository._format
4536
if (from_format.supports_chks and self.to_format.supports_chks and
4537
from_format.network_name() == self.to_format.network_name()):
4538
raise AssertionError(
4539
"this case should be handled by GroupCHKStreamSource")
4540
elif 'forceinvdeltas' in debug.debug_flags:
4541
return self._get_convertable_inventory_stream(revision_ids,
4542
delta_versus_null=missing)
4543
elif from_format.network_name() == self.to_format.network_name():
4545
return self._get_simple_inventory_stream(revision_ids,
4547
elif (not from_format.supports_chks and not self.to_format.supports_chks
4548
and from_format._serializer == self.to_format._serializer):
4549
# Essentially the same format.
4550
return self._get_simple_inventory_stream(revision_ids,
4553
# Any time we switch serializations, we want to use an
4554
# inventory-delta based approach.
4555
return self._get_convertable_inventory_stream(revision_ids,
4556
delta_versus_null=missing)
4558
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4559
# NB: This currently reopens the inventory weave in source;
4560
# using a single stream interface instead would avoid this.
4561
from_weave = self.from_repository.inventories
4563
delta_closure = True
4565
delta_closure = not self.delta_on_metadata()
4566
yield ('inventories', from_weave.get_record_stream(
4567
[(rev_id,) for rev_id in revision_ids],
4568
self.inventory_fetch_order(), delta_closure))
4570
def _get_convertable_inventory_stream(self, revision_ids,
4571
delta_versus_null=False):
4572
# The two formats are sufficiently different that there is no fast
4573
# path, so we need to send just inventorydeltas, which any
4574
# sufficiently modern client can insert into any repository.
4575
# The StreamSink code expects to be able to
4576
# convert on the target, so we need to put bytes-on-the-wire that can
4577
# be converted. That means inventory deltas (if the remote is <1.19,
4578
# RemoteStreamSink will fallback to VFS to insert the deltas).
4579
yield ('inventory-deltas',
4580
self._stream_invs_as_deltas(revision_ids,
4581
delta_versus_null=delta_versus_null))
4583
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4584
"""Return a stream of inventory-deltas for the given rev ids.
4586
:param revision_ids: The list of inventories to transmit
4587
:param delta_versus_null: Don't try to find a minimal delta for this
4588
entry, instead compute the delta versus the NULL_REVISION. This
4589
effectively streams a complete inventory. Used for stuff like
4590
filling in missing parents, etc.
4592
from_repo = self.from_repository
4593
revision_keys = [(rev_id,) for rev_id in revision_ids]
4594
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4595
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4597
inventories = self.from_repository.iter_inventories(
4598
revision_ids, 'topological')
4599
format = from_repo._format
4600
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4601
inventory_cache = lru_cache.LRUCache(50)
4602
null_inventory = from_repo.revision_tree(
4603
_mod_revision.NULL_REVISION).inventory
4604
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4605
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4606
# repo back into a non-rich-root repo ought to be allowed)
4607
serializer = inventory_delta.InventoryDeltaSerializer(
4608
versioned_root=format.rich_root_data,
4609
tree_references=format.supports_tree_reference)
4610
for inv in inventories:
4611
key = (inv.revision_id,)
4612
parent_keys = parent_map.get(key, ())
4614
if not delta_versus_null and parent_keys:
4615
# The caller did not ask for complete inventories and we have
4616
# some parents that we can delta against. Make a delta against
4617
# each parent so that we can find the smallest.
4618
parent_ids = [parent_key[0] for parent_key in parent_keys]
4619
for parent_id in parent_ids:
4620
if parent_id not in invs_sent_so_far:
4621
# We don't know that the remote side has this basis, so
4624
if parent_id == _mod_revision.NULL_REVISION:
4625
parent_inv = null_inventory
4627
parent_inv = inventory_cache.get(parent_id, None)
4628
if parent_inv is None:
4629
parent_inv = from_repo.get_inventory(parent_id)
4630
candidate_delta = inv._make_delta(parent_inv)
4631
if (delta is None or
4632
len(delta) > len(candidate_delta)):
4633
delta = candidate_delta
4634
basis_id = parent_id
4636
# Either none of the parents ended up being suitable, or we
4637
# were asked to delta against NULL
4638
basis_id = _mod_revision.NULL_REVISION
4639
delta = inv._make_delta(null_inventory)
4640
invs_sent_so_far.add(inv.revision_id)
4641
inventory_cache[inv.revision_id] = inv
4642
delta_serialized = ''.join(
4643
serializer.delta_to_lines(basis_id, key[-1], delta))
4644
yield versionedfile.FulltextContentFactory(
4645
key, parent_keys, None, delta_serialized)
4648
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4649
stop_revision=None):
4650
"""Extend the partial history to include a given index
4652
If a stop_index is supplied, stop when that index has been reached.
4653
If a stop_revision is supplied, stop when that revision is
4654
encountered. Otherwise, stop when the beginning of history is
4657
:param stop_index: The index which should be present. When it is
4658
present, history extension will stop.
4659
:param stop_revision: The revision id which should be present. When
4660
it is encountered, history extension will stop.
4662
start_revision = partial_history_cache[-1]
4663
iterator = repo.iter_reverse_revision_history(start_revision)
4665
#skip the last revision in the list
4668
if (stop_index is not None and
4669
len(partial_history_cache) > stop_index):
4671
if partial_history_cache[-1] == stop_revision:
4673
revision_id = iterator.next()
4674
partial_history_cache.append(revision_id)
4675
except StopIteration:
2139
"""Unescape &, <, and > in a string of data.
2141
data = data.replace("<", "<")
2142
data = data.replace(">", ">")
2143
# must do ampersand last
2144
return data.replace("&", "&")