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# Copyright (C) 2005, 2006 Canonical Ltd
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# Copyright (C) 2005-2010 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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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import bzrlib.bzrdir as bzrdir
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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import bzrlib.errors as errors
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from bzrlib.errors import InvalidRevisionId
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import bzrlib.gpg as gpg
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from bzrlib.graph import Graph
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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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.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.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
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from bzrlib.revision import NULL_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 *
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from bzrlib.trace import mutter, note
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from bzrlib.tree import RevisionTree
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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.tree import EmptyTree
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from bzrlib.weave import WeaveFile
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class Repository(object):
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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,
666
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):
47
867
"""Repository holding history for one or more branches.
49
869
The repository holds and retrieves historical information including
50
870
revisions and file history. It's normally accessed only by the Branch,
51
871
which views a particular line of development through that history.
53
The Repository builds on top of Stores and a Transport, which respectively
54
describe the disk data format and the way of accessing the (possibly
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
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.
59
def add_inventory(self, revid, inv, parents):
60
"""Add the inventory inv to the repository as revid.
62
:param parents: The revision ids of the parents that revid
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
63
1006
is known to have and are in the repository already.
65
returns the sha1 of the serialized inventory.
67
inv_text = bzrlib.xml5.serializer_v5.write_inventory_to_string(inv)
68
inv_sha1 = bzrlib.osutils.sha_string(inv_text)
69
inv_vf = self.control_weaves.get_weave('inventory',
70
self.get_transaction())
71
inv_vf.add_lines(revid, parents, bzrlib.osutils.split_lines(inv_text))
75
def add_revision(self, rev_id, rev, inv=None, config=None):
76
"""Add rev to the revision store as rev_id.
78
:param rev_id: the revision id to use.
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.
79
1094
:param rev: The revision object.
80
1095
:param inv: The inventory for the revision. if None, it will be looked
81
1096
up in the inventory storer
200
1531
For instance, if the repository is at URL/.bzr/repository,
201
1532
Repository.open(URL) -> a Repository instance.
203
control = bzrlib.bzrdir.BzrDir.open(base)
1534
control = bzrdir.BzrDir.open(base)
204
1535
return control.open_repository()
206
def copy_content_into(self, destination, revision_id=None, basis=None):
1537
def copy_content_into(self, destination, revision_id=None):
207
1538
"""Make a complete copy of the content in self into destination.
1540
This is a destructive operation! Do not use it on existing
1543
return InterRepository.get(self, destination).copy_content(revision_id)
1545
def commit_write_group(self):
1546
"""Commit the contents accrued within the current write group.
1548
:seealso: start_write_group.
209
This is a destructive operation! Do not use it on existing
212
return InterRepository.get(self, destination).copy_content(revision_id, basis)
214
def fetch(self, source, revision_id=None, pb=None):
1550
:return: it may return an opaque hint that can be passed to 'pack'.
1552
if self._write_group is not self.get_transaction():
1553
# has an unlock or relock occured ?
1554
raise errors.BzrError('mismatched lock context %r and '
1556
(self.get_transaction(), self._write_group))
1557
result = self._commit_write_group()
1558
self._write_group = None
1561
def _commit_write_group(self):
1562
"""Template method for per-repository write group cleanup.
1564
This is called before the write group is considered to be
1565
finished and should ensure that all data handed to the repository
1566
for writing during the write group is safely committed (to the
1567
extent possible considering file system caching etc).
1570
def suspend_write_group(self):
1571
raise errors.UnsuspendableWriteGroup(self)
1573
def get_missing_parent_inventories(self, check_for_missing_texts=True):
1574
"""Return the keys of missing inventory parents for revisions added in
1577
A revision is not complete if the inventory delta for that revision
1578
cannot be calculated. Therefore if the parent inventories of a
1579
revision are not present, the revision is incomplete, and e.g. cannot
1580
be streamed by a smart server. This method finds missing inventory
1581
parents for revisions added in this write group.
1583
if not self._format.supports_external_lookups:
1584
# This is only an issue for stacked repositories
1586
if not self.is_in_write_group():
1587
raise AssertionError('not in a write group')
1589
# XXX: We assume that every added revision already has its
1590
# corresponding inventory, so we only check for parent inventories that
1591
# might be missing, rather than all inventories.
1592
parents = set(self.revisions._index.get_missing_parents())
1593
parents.discard(_mod_revision.NULL_REVISION)
1594
unstacked_inventories = self.inventories._index
1595
present_inventories = unstacked_inventories.get_parent_map(
1596
key[-1:] for key in parents)
1597
parents.difference_update(present_inventories)
1598
if len(parents) == 0:
1599
# No missing parent inventories.
1601
if not check_for_missing_texts:
1602
return set(('inventories', rev_id) for (rev_id,) in parents)
1603
# Ok, now we have a list of missing inventories. But these only matter
1604
# if the inventories that reference them are missing some texts they
1605
# appear to introduce.
1606
# XXX: Texts referenced by all added inventories need to be present,
1607
# but at the moment we're only checking for texts referenced by
1608
# inventories at the graph's edge.
1609
key_deps = self.revisions._index._key_dependencies
1610
key_deps.satisfy_refs_for_keys(present_inventories)
1611
referrers = frozenset(r[0] for r in key_deps.get_referrers())
1612
file_ids = self.fileids_altered_by_revision_ids(referrers)
1613
missing_texts = set()
1614
for file_id, version_ids in file_ids.iteritems():
1615
missing_texts.update(
1616
(file_id, version_id) for version_id in version_ids)
1617
present_texts = self.texts.get_parent_map(missing_texts)
1618
missing_texts.difference_update(present_texts)
1619
if not missing_texts:
1620
# No texts are missing, so all revisions and their deltas are
1623
# Alternatively the text versions could be returned as the missing
1624
# keys, but this is likely to be less data.
1625
missing_keys = set(('inventories', rev_id) for (rev_id,) in parents)
1628
def refresh_data(self):
1629
"""Re-read any data needed to to synchronise with disk.
1631
This method is intended to be called after another repository instance
1632
(such as one used by a smart server) has inserted data into the
1633
repository. It may not be called during a write group, but may be
1634
called at any other time.
1636
if self.is_in_write_group():
1637
raise errors.InternalBzrError(
1638
"May not refresh_data while in a write group.")
1639
self._refresh_data()
1641
def resume_write_group(self, tokens):
1642
if not self.is_write_locked():
1643
raise errors.NotWriteLocked(self)
1644
if self._write_group:
1645
raise errors.BzrError('already in a write group')
1646
self._resume_write_group(tokens)
1647
# so we can detect unlock/relock - the write group is now entered.
1648
self._write_group = self.get_transaction()
1650
def _resume_write_group(self, tokens):
1651
raise errors.UnsuspendableWriteGroup(self)
1653
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False,
215
1655
"""Fetch the content required to construct revision_id from source.
217
If revision_id is None all content is copied.
219
return InterRepository.get(source, self).fetch(revision_id=revision_id,
1657
If revision_id is None and fetch_spec is None, then all content is
1660
fetch() may not be used when the repository is in a write group -
1661
either finish the current write group before using fetch, or use
1662
fetch before starting the write group.
1664
:param find_ghosts: Find and copy revisions in the source that are
1665
ghosts in the target (and not reachable directly by walking out to
1666
the first-present revision in target from revision_id).
1667
:param revision_id: If specified, all the content needed for this
1668
revision ID will be copied to the target. Fetch will determine for
1669
itself which content needs to be copied.
1670
:param fetch_spec: If specified, a SearchResult or
1671
PendingAncestryResult that describes which revisions to copy. This
1672
allows copying multiple heads at once. Mutually exclusive with
1675
if fetch_spec is not None and revision_id is not None:
1676
raise AssertionError(
1677
"fetch_spec and revision_id are mutually exclusive.")
1678
if self.is_in_write_group():
1679
raise errors.InternalBzrError(
1680
"May not fetch while in a write group.")
1681
# fast path same-url fetch operations
1682
# TODO: lift out to somewhere common with RemoteRepository
1683
# <https://bugs.edge.launchpad.net/bzr/+bug/401646>
1684
if (self.has_same_location(source)
1685
and fetch_spec is None
1686
and self._has_same_fallbacks(source)):
1687
# check that last_revision is in 'from' and then return a
1689
if (revision_id is not None and
1690
not _mod_revision.is_null(revision_id)):
1691
self.get_revision(revision_id)
1693
# if there is no specific appropriate InterRepository, this will get
1694
# the InterRepository base class, which raises an
1695
# IncompatibleRepositories when asked to fetch.
1696
inter = InterRepository.get(source, self)
1697
return inter.fetch(revision_id=revision_id, pb=pb,
1698
find_ghosts=find_ghosts, fetch_spec=fetch_spec)
1700
def create_bundle(self, target, base, fileobj, format=None):
1701
return serializer.write_bundle(self, target, base, fileobj, format)
1703
def get_commit_builder(self, branch, parents, config, timestamp=None,
1704
timezone=None, committer=None, revprops=None,
1706
"""Obtain a CommitBuilder for this repository.
1708
:param branch: Branch to commit to.
1709
:param parents: Revision ids of the parents of the new revision.
1710
:param config: Configuration to use.
1711
:param timestamp: Optional timestamp recorded for commit.
1712
:param timezone: Optional timezone for timestamp.
1713
:param committer: Optional committer to set for commit.
1714
:param revprops: Optional dictionary of revision properties.
1715
: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()
1726
@only_raises(errors.LockNotHeld, errors.LockBroken)
222
1727
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.')
223
1735
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:
225
1741
@needs_read_lock
226
def clone(self, a_bzrdir, revision_id=None, basis=None):
1742
def clone(self, a_bzrdir, revision_id=None):
227
1743
"""Clone this repository into a_bzrdir using the current format.
229
1745
Currently no check is made that the format of this repository and
230
1746
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):
232
1796
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
233
1797
# use target default format.
234
result = a_bzrdir.create_repository()
235
# FIXME RBC 20060209 split out the repository type to avoid this check ?
236
elif isinstance(a_bzrdir._format,
237
(bzrlib.bzrdir.BzrDirFormat4,
238
bzrlib.bzrdir.BzrDirFormat5,
239
bzrlib.bzrdir.BzrDirFormat6)):
240
result = a_bzrdir.open_repository()
1798
dest_repo = a_bzrdir.create_repository()
242
result = self._format.initialize(a_bzrdir, shared=self.is_shared())
243
self.copy_content_into(result, revision_id, basis)
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)
246
1816
@needs_read_lock
247
1817
def has_revision(self, revision_id):
248
1818
"""True if this repository has a copy of the revision."""
249
return self._revision_store.has_revision_id(revision_id,
250
self.get_transaction())
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]
252
1841
@needs_read_lock
253
1842
def get_revision_reconcile(self, revision_id):
254
1843
"""'reconcile' helper routine that allows access to a revision always.
256
1845
This variant of get_revision does not cross check the weave graph
257
1846
against the revision one as get_revision does: but it should only
258
1847
be used by reconcile, or reconcile-alike commands that are correcting
259
1848
or testing the revision graph.
261
if not revision_id or not isinstance(revision_id, basestring):
262
raise InvalidRevisionId(revision_id=revision_id, branch=self)
263
return self._revision_store.get_revision(revision_id,
264
self.get_transaction())
267
def get_revision_xml(self, revision_id):
268
rev = self.get_revision(revision_id)
270
# the current serializer..
271
self._revision_store._serializer.write_revision(rev, rev_tmp)
273
return rev_tmp.getvalue()
276
def get_revision(self, revision_id):
277
"""Return the Revision object for a named revision"""
278
r = self.get_revision_reconcile(revision_id)
279
# weave corruption can lead to absent revision markers that should be
281
# the following test is reasonably cheap (it needs a single weave read)
282
# and the weave is cached in read transactions. In write transactions
283
# it is not cached but typically we only read a small number of
284
# revisions. For knits when they are introduced we will probably want
285
# to ensure that caching write transactions are in use.
286
inv = self.get_inventory_weave()
287
self._check_revision_parents(r, inv)
290
def _check_revision_parents(self, revision, inventory):
291
"""Private to Repository and Fetch.
1850
return self._get_revisions([revision_id])[0]
1853
def get_revisions(self, revision_ids):
1854
"""Get many revisions at once.
293
This checks the parentage of revision in an inventory weave for
294
consistency and is only applicable to inventory-weave-for-ancestry
295
using repository formats & fetchers.
297
weave_parents = inventory.get_parents(revision.revision_id)
298
weave_names = inventory.versions()
299
for parent_id in revision.parent_ids:
300
if parent_id in weave_names:
301
# this parent must not be a ghost.
302
if not parent_id in weave_parents:
304
raise errors.CorruptRepository(self)
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):
1899
"""Produce a generator of revision deltas.
1901
Note that the input is a sequence of REVISIONS, not revision_ids.
1902
Trees will be held in memory until the generator exits.
1903
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
required_trees = set()
1911
for revision in revisions:
1912
required_trees.add(revision.revision_id)
1913
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
1930
for revision in revisions:
1931
if not revision.parent_ids:
1932
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1934
old_tree = trees[revision.parent_ids[0]]
1935
yield trees[revision.revision_id].changes_from(old_tree)
1938
def get_revision_delta(self, revision_id, specific_fileids=None):
1939
"""Return the delta for one revision.
1941
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
r = self.get_revision(revision_id)
1949
return list(self.get_deltas_for_revisions([r],
1950
specific_fileids=specific_fileids))[0]
306
1952
@needs_write_lock
307
1953
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
308
1954
signature = gpg_strategy.sign(plaintext)
309
self._revision_store.add_revision_signature_text(revision_id,
311
self.get_transaction())
313
def fileids_altered_by_revision_ids(self, revision_ids):
314
"""Find the file ids and versions affected by revisions.
316
:param revisions: an iterable containing revision ids.
317
:return: a dictionary mapping altered file-ids to an iterable of
318
revision_ids. Each altered file-ids has the exact revision_ids that
319
altered it listed explicitly.
321
assert isinstance(self._format, (RepositoryFormat5,
324
RepositoryFormatKnit1)), \
325
"fileid_involved only supported for branches which store inventory as unnested xml"
326
selected_revision_ids = set(revision_ids)
327
w = self.get_inventory_weave()
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)
330
1999
# this code needs to read every new line in every inventory for the
331
2000
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
332
# not pesent in one of those inventories is unnecessary but not
2001
# not present in one of those inventories is unnecessary but not
333
2002
# harmful because we are filtering by the revision id marker in the
334
# inventory lines : we only select file ids altered in one of those
335
# revisions. We dont need to see all lines in the inventory because
2003
# inventory lines : we only select file ids altered in one of those
2004
# revisions. We don't need to see all lines in the inventory because
336
2005
# only those added in an inventory in rev X can contain a revision=X
338
for line in w.iter_lines_added_or_present_in_versions(selected_revision_ids):
339
start = line.find('file_id="')+9
340
if start < 9: continue
341
end = line.find('"', start)
343
file_id = _unescape_xml(line[start:end])
345
start = line.find('revision="')+10
346
if start < 10: continue
347
end = line.find('"', start)
349
revision_id = _unescape_xml(line[start:end])
350
if revision_id in selected_revision_ids:
351
result.setdefault(file_id, set()).add(revision_id)
355
def get_inventory_weave(self):
356
return self.control_weaves.get_weave('inventory',
357
self.get_transaction())
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)
359
2337
@needs_read_lock
360
2338
def get_inventory(self, revision_id):
361
"""Get Inventory object by hash."""
362
xml = self.get_inventory_xml(revision_id)
363
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
366
def get_inventory_xml(self, revision_id):
367
"""Get inventory XML as a file object."""
369
assert isinstance(revision_id, basestring), type(revision_id)
370
iw = self.get_inventory_weave()
371
return iw.get_text(revision_id)
373
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
376
def get_inventory_sha1(self, revision_id):
377
"""Return the sha1 hash of the inventory entry
379
return self.get_revision(revision_id).inventory_sha1
382
def get_revision_graph(self, revision_id=None):
383
"""Return a dictionary containing the revision graph.
385
:return: a dictionary of revision_id->revision_parents_list.
387
weave = self.get_inventory_weave()
388
all_revisions = self._eliminate_revisions_not_present(weave.versions())
389
entire_graph = dict([(node, weave.get_parents(node)) for
390
node in all_revisions])
391
if revision_id is None:
393
elif revision_id not in entire_graph:
394
raise errors.NoSuchRevision(self, revision_id)
396
# add what can be reached from revision_id
398
pending = set([revision_id])
399
while len(pending) > 0:
401
result[node] = entire_graph[node]
402
for revision_id in result[node]:
403
if revision_id not in result:
404
pending.add(revision_id)
408
def get_revision_graph_with_ghosts(self, revision_ids=None):
409
"""Return a graph of the revisions with ghosts marked as applicable.
411
:param revision_ids: an iterable of revisions to graph or None for all.
412
:return: a Graph object with the graph reachable from revision_ids.
416
pending = set(self.all_revision_ids())
419
pending = set(revision_ids)
420
required = set(revision_ids)
423
revision_id = pending.pop()
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.
2405
:param revision_id: The expected revision id of the inventory.
2406
: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
2420
def _get_inventory_xml(self, revision_id):
2421
"""Get serialized inventory as a string."""
2422
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2424
text, revision_id = texts.next()
2425
except StopIteration:
2426
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):
425
rev = self.get_revision(revision_id)
426
except errors.NoSuchRevision:
427
if revision_id in required:
430
result.add_ghost(revision_id)
432
for parent_id in rev.parent_ids:
433
# is this queued or done ?
434
if (parent_id not in pending and
435
parent_id not in done):
437
pending.add(parent_id)
438
result.add_node(revision_id, rev.parent_ids)
439
done.add(revision_id)
443
def get_revision_inventory(self, revision_id):
444
"""Return inventory of a past revision."""
445
# TODO: Unify this with get_inventory()
446
# bzr 0.0.6 and later imposes the constraint that the inventory_id
447
# must be the same as its revision, so this is trivial.
448
if revision_id is None:
449
# This does not make sense: if there is no revision,
450
# then it is the current tree inventory surely ?!
451
# and thus get_root_id() is something that looks at the last
452
# commit on the branch, and the get_root_id is an inventory check.
453
raise NotImplementedError
454
# return Inventory(self.get_root_id())
456
return self.get_inventory(revision_id)
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]
459
2485
def is_shared(self):
460
2486
"""Return True if this repository is flagged as a shared repository."""
461
2487
raise NotImplementedError(self.is_shared)
551
2688
@needs_read_lock
552
2689
def has_signature_for_revision_id(self, revision_id):
553
2690
"""Query for a revision signature for revision_id in the repository."""
554
return self._revision_store.has_signature(revision_id,
555
self.get_transaction())
2691
if not self.has_revision(revision_id):
2692
raise errors.NoSuchRevision(self, revision_id)
2693
sig_present = (1 == len(
2694
self.signatures.get_parent_map([(revision_id,)])))
557
2697
@needs_read_lock
558
2698
def get_signature_text(self, revision_id):
559
2699
"""Return the text for a signature."""
560
return self._revision_store.get_signature_text(revision_id,
561
self.get_transaction())
564
class AllInOneRepository(Repository):
565
"""Legacy support - the repository behaviour for all-in-one branches."""
567
def __init__(self, _format, a_bzrdir, _revision_store, control_store, text_store):
568
# we reuse one control files instance.
569
dir_mode = a_bzrdir._control_files._dir_mode
570
file_mode = a_bzrdir._control_files._file_mode
572
def get_store(name, compressed=True, prefixed=False):
573
# FIXME: This approach of assuming stores are all entirely compressed
574
# or entirely uncompressed is tidy, but breaks upgrade from
575
# some existing branches where there's a mixture; we probably
576
# still want the option to look for both.
577
relpath = a_bzrdir._control_files._escape(name)
578
store = TextStore(a_bzrdir._control_files._transport.clone(relpath),
579
prefixed=prefixed, compressed=compressed,
582
#if self._transport.should_cache():
583
# cache_path = os.path.join(self.cache_root, name)
584
# os.mkdir(cache_path)
585
# store = bzrlib.store.CachedStore(store, cache_path)
588
# not broken out yet because the controlweaves|inventory_store
589
# and text_store | weave_store bits are still different.
590
if isinstance(_format, RepositoryFormat4):
591
# cannot remove these - there is still no consistent api
592
# which allows access to this old info.
593
self.inventory_store = get_store('inventory-store')
594
text_store = get_store('text-store')
595
super(AllInOneRepository, self).__init__(_format, a_bzrdir, a_bzrdir._control_files, _revision_store, control_store, text_store)
2700
stream = self.signatures.get_record_stream([(revision_id,)],
2702
record = stream.next()
2703
if record.storage_kind == 'absent':
2704
raise errors.NoSuchRevision(self, revision_id)
2705
return record.get_bytes_as('fulltext')
597
2707
@needs_read_lock
599
"""AllInOne repositories cannot be shared."""
603
def set_make_working_trees(self, new_value):
604
"""Set the policy flag for making working trees when creating branches.
606
This only applies to branches that use this repository.
608
The default is 'True'.
609
:param new_value: True to restore the default, False to disable making
612
raise NotImplementedError(self.set_make_working_trees)
614
def make_working_trees(self):
615
"""Returns the policy for making working trees on new branches."""
2708
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
2709
"""Check consistency of all history of given revision_ids.
2711
Different repository implementations should override _check().
2713
:param revision_ids: A non-empty list of revision_ids whose ancestry
2714
will be checked. Typically the last revision_id of a branch.
2715
:param callback_refs: A dict of check-refs to resolve and callback
2716
the check/_check method on the items listed as wanting the ref.
2718
:param check_repo: If False do not check the repository contents, just
2719
calculate the data callback_refs requires and call them back.
2721
return self._check(revision_ids, callback_refs=callback_refs,
2722
check_repo=check_repo)
2724
def _check(self, revision_ids, callback_refs, check_repo):
2725
result = check.Check(self, check_repo=check_repo)
2726
result.check(callback_refs)
2729
def _warn_if_deprecated(self, branch=None):
2730
global _deprecation_warning_done
2731
if _deprecation_warning_done:
2735
conf = config.GlobalConfig()
2737
conf = branch.get_config()
2738
if conf.suppress_warning('format_deprecation'):
2740
warning("Format %s for %s is deprecated -"
2741
" please use 'bzr upgrade' to get better performance"
2742
% (self._format, self.bzrdir.transport.base))
2744
_deprecation_warning_done = True
2746
def supports_rich_root(self):
2747
return self._format.rich_root_data
2749
def _check_ascii_revisionid(self, revision_id, method):
2750
"""Private helper for ascii-only repositories."""
2751
# weave repositories refuse to store revisionids that are non-ascii.
2752
if revision_id is not None:
2753
# weaves require ascii revision ids.
2754
if isinstance(revision_id, unicode):
2756
revision_id.encode('ascii')
2757
except UnicodeEncodeError:
2758
raise errors.NonAsciiRevisionId(method, self)
2761
revision_id.decode('ascii')
2762
except UnicodeDecodeError:
2763
raise errors.NonAsciiRevisionId(method, self)
2765
def revision_graph_can_have_wrong_parents(self):
2766
"""Is it possible for this repository to have a revision graph with
2769
If True, then this repository must also implement
2770
_find_inconsistent_revision_parents so that check and reconcile can
2771
check for inconsistencies before proceeding with other checks that may
2772
depend on the revision index being consistent.
2774
raise NotImplementedError(self.revision_graph_can_have_wrong_parents)
2777
# remove these delegates a while after bzr 0.15
2778
def __make_delegated(name, from_module):
2779
def _deprecated_repository_forwarder():
2780
symbol_versioning.warn('%s moved to %s in bzr 0.15'
2781
% (name, from_module),
2784
m = __import__(from_module, globals(), locals(), [name])
2786
return getattr(m, name)
2787
except AttributeError:
2788
raise AttributeError('module %s has no name %s'
2790
globals()[name] = _deprecated_repository_forwarder
2793
'AllInOneRepository',
2794
'WeaveMetaDirRepository',
2795
'PreSplitOutRepositoryFormat',
2796
'RepositoryFormat4',
2797
'RepositoryFormat5',
2798
'RepositoryFormat6',
2799
'RepositoryFormat7',
2801
__make_delegated(_name, 'bzrlib.repofmt.weaverepo')
2805
'RepositoryFormatKnit',
2806
'RepositoryFormatKnit1',
2808
__make_delegated(_name, 'bzrlib.repofmt.knitrepo')
2811
def install_revision(repository, rev, revision_tree):
2812
"""Install all revision data into a repository."""
2813
install_revisions(repository, [(rev, revision_tree, None)])
2816
def install_revisions(repository, iterable, num_revisions=None, pb=None):
2817
"""Install all revision data into a repository.
2819
Accepts an iterable of revision, tree, signature tuples. The signature
2822
repository.start_write_group()
2824
inventory_cache = lru_cache.LRUCache(10)
2825
for n, (revision, revision_tree, signature) in enumerate(iterable):
2826
_install_revision(repository, revision, revision_tree, signature,
2829
pb.update('Transferring revisions', n + 1, num_revisions)
2831
repository.abort_write_group()
2834
repository.commit_write_group()
2837
def _install_revision(repository, rev, revision_tree, signature,
2839
"""Install all revision data into a repository."""
2840
present_parents = []
2842
for p_id in rev.parent_ids:
2843
if repository.has_revision(p_id):
2844
present_parents.append(p_id)
2845
parent_trees[p_id] = repository.revision_tree(p_id)
2847
parent_trees[p_id] = repository.revision_tree(
2848
_mod_revision.NULL_REVISION)
2850
inv = revision_tree.inventory
2851
entries = inv.iter_entries()
2852
# backwards compatibility hack: skip the root id.
2853
if not repository.supports_rich_root():
2854
path, root = entries.next()
2855
if root.revision != rev.revision_id:
2856
raise errors.IncompatibleRevision(repr(repository))
2858
for path, ie in entries:
2859
text_keys[(ie.file_id, ie.revision)] = ie
2860
text_parent_map = repository.texts.get_parent_map(text_keys)
2861
missing_texts = set(text_keys) - set(text_parent_map)
2862
# Add the texts that are not already present
2863
for text_key in missing_texts:
2864
ie = text_keys[text_key]
2866
# FIXME: TODO: The following loop overlaps/duplicates that done by
2867
# commit to determine parents. There is a latent/real bug here where
2868
# the parents inserted are not those commit would do - in particular
2869
# they are not filtered by heads(). RBC, AB
2870
for revision, tree in parent_trees.iteritems():
2871
if ie.file_id not in tree:
2873
parent_id = tree.inventory[ie.file_id].revision
2874
if parent_id in text_parents:
2876
text_parents.append((ie.file_id, parent_id))
2877
lines = revision_tree.get_file(ie.file_id).readlines()
2878
repository.texts.add_lines(text_key, text_parents, lines)
2880
# install the inventory
2881
if repository._format._commit_inv_deltas and len(rev.parent_ids):
2882
# Cache this inventory
2883
inventory_cache[rev.revision_id] = inv
2885
basis_inv = inventory_cache[rev.parent_ids[0]]
2887
repository.add_inventory(rev.revision_id, inv, present_parents)
2889
delta = inv._make_delta(basis_inv)
2890
repository.add_inventory_by_delta(rev.parent_ids[0], delta,
2891
rev.revision_id, present_parents)
2893
repository.add_inventory(rev.revision_id, inv, present_parents)
2894
except errors.RevisionAlreadyPresent:
2896
if signature is not None:
2897
repository.add_signature_text(rev.revision_id, signature)
2898
repository.add_revision(rev.revision_id, rev, inv)
619
2901
class MetaDirRepository(Repository):
620
"""Repositories in the new meta-dir layout."""
622
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
623
super(MetaDirRepository, self).__init__(_format,
630
dir_mode = self.control_files._dir_mode
631
file_mode = self.control_files._file_mode
2902
"""Repositories in the new meta-dir layout.
2904
:ivar _transport: Transport for access to repository control files,
2905
typically pointing to .bzr/repository.
2908
def __init__(self, _format, a_bzrdir, control_files):
2909
super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
2910
self._transport = control_files._transport
634
2912
def is_shared(self):
635
2913
"""Return True if this repository is flagged as a shared repository."""
636
return self.control_files._transport.has('shared-storage')
2914
return self._transport.has('shared-storage')
638
2916
@needs_write_lock
639
2917
def set_make_working_trees(self, new_value):
650
self.control_files._transport.delete('no-working-trees')
2928
self._transport.delete('no-working-trees')
651
2929
except errors.NoSuchFile:
654
self.control_files.put_utf8('no-working-trees', '')
2932
self._transport.put_bytes('no-working-trees', '',
2933
mode=self.bzrdir._get_file_mode())
656
2935
def make_working_trees(self):
657
2936
"""Returns the policy for making working trees on new branches."""
658
return not self.control_files._transport.has('no-working-trees')
661
class KnitRepository(MetaDirRepository):
662
"""Knit format repository."""
665
def all_revision_ids(self):
666
"""See Repository.all_revision_ids()."""
667
return self._revision_store.all_revision_ids(self.get_transaction())
669
def fileid_involved_between_revs(self, from_revid, to_revid):
670
"""Find file_id(s) which are involved in the changes between revisions.
672
This determines the set of revisions which are involved, and then
673
finds all file ids affected by those revisions.
675
vf = self._get_revision_vf()
676
from_set = set(vf.get_ancestry(from_revid))
677
to_set = set(vf.get_ancestry(to_revid))
678
changed = to_set.difference(from_set)
679
return self._fileid_involved_by_set(changed)
681
def fileid_involved(self, last_revid=None):
682
"""Find all file_ids modified in the ancestry of last_revid.
684
:param last_revid: If None, last_revision() will be used.
687
changed = set(self.all_revision_ids())
689
changed = set(self.get_ancestry(last_revid))
692
return self._fileid_involved_by_set(changed)
695
def get_ancestry(self, revision_id):
696
"""Return a list of revision-ids integrated by a revision.
698
This is topologically sorted.
700
if revision_id is None:
702
vf = self._get_revision_vf()
704
return [None] + vf.get_ancestry(revision_id)
705
except errors.RevisionNotPresent:
706
raise errors.NoSuchRevision(self, revision_id)
709
def get_revision(self, revision_id):
710
"""Return the Revision object for a named revision"""
711
return self.get_revision_reconcile(revision_id)
714
def get_revision_graph(self, revision_id=None):
715
"""Return a dictionary containing the revision graph.
717
:return: a dictionary of revision_id->revision_parents_list.
719
weave = self._get_revision_vf()
720
entire_graph = weave.get_graph()
721
if revision_id is None:
722
return weave.get_graph()
723
elif revision_id not in weave:
724
raise errors.NoSuchRevision(self, revision_id)
726
# add what can be reached from revision_id
728
pending = set([revision_id])
729
while len(pending) > 0:
731
result[node] = weave.get_parents(node)
732
for revision_id in result[node]:
733
if revision_id not in result:
734
pending.add(revision_id)
738
def get_revision_graph_with_ghosts(self, revision_ids=None):
739
"""Return a graph of the revisions with ghosts marked as applicable.
741
:param revision_ids: an iterable of revisions to graph or None for all.
742
:return: a Graph object with the graph reachable from revision_ids.
745
vf = self._get_revision_vf()
746
versions = set(vf.versions())
748
pending = set(self.all_revision_ids())
751
pending = set(revision_ids)
752
required = set(revision_ids)
755
revision_id = pending.pop()
756
if not revision_id in versions:
757
if revision_id in required:
758
raise errors.NoSuchRevision(self, revision_id)
760
result.add_ghost(revision_id)
761
# mark it as done so we dont try for it again.
762
done.add(revision_id)
764
parent_ids = vf.get_parents_with_ghosts(revision_id)
765
for parent_id in parent_ids:
766
# is this queued or done ?
767
if (parent_id not in pending and
768
parent_id not in done):
770
pending.add(parent_id)
771
result.add_node(revision_id, parent_ids)
772
done.add(revision_id)
775
def _get_revision_vf(self):
776
""":return: a versioned file containing the revisions."""
777
vf = self._revision_store.get_revision_file(self.get_transaction())
781
def reconcile(self, other=None, thorough=False):
782
"""Reconcile this repository."""
783
from bzrlib.reconcile import KnitReconciler
784
reconciler = KnitReconciler(self, thorough=thorough)
785
reconciler.reconcile()
788
def revision_parents(self, revid):
789
return self._get_revision_vf().get_parents(rev_id)
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
791
2968
class RepositoryFormat(object):
792
2969
"""A repository format.
794
Formats provide three things:
2971
Formats provide four things:
795
2972
* An initialization routine to construct repository data on disk.
796
* a format string which is used when the BzrDir supports versioned
2973
* a optional format string which is used when the BzrDir supports
798
2975
* an open routine which returns a Repository instance.
800
Formats are placed in an dict by their format string for reference
801
during opening. These should be subclasses of RepositoryFormat
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
804
2988
Once a format is deprecated, just deprecate the initialize and open
805
methods on the format class. Do not deprecate the object, as the
806
object will be created every system load.
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
808
2993
Common instance attributes:
809
2994
_matchingbzrdir - the bzrdir format that the repository format was
810
2995
originally written to work with. This can be used if manually
811
2996
constructing a bzrdir and repository, or more commonly for test suite
815
_default_format = None
816
"""The default format used for new repositories."""
819
"""The known formats."""
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
822
3047
def find_format(klass, a_bzrdir):
823
"""Return the format for the repository object in 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
825
3055
transport = a_bzrdir.get_repository_transport(None)
826
format_string = transport.get("format").read()
827
return klass._formats[format_string]
3056
format_string = transport.get_bytes("format")
3057
return format_registry.get(format_string)
828
3058
except errors.NoSuchFile:
829
3059
raise errors.NoRepositoryPresent(a_bzrdir)
830
3060
except KeyError:
831
raise errors.UnknownFormatError(format_string)
833
def _get_control_store(self, repo_transport, control_files):
834
"""Return the control store for this repository."""
835
raise NotImplementedError(self._get_control_store)
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())
838
3073
def get_default_format(klass):
839
3074
"""Return the current default format."""
840
return klass._default_format
3075
from bzrlib import bzrdir
3076
return bzrdir.format_registry.make_bzrdir('default').repository_format
842
3078
def get_format_string(self):
843
3079
"""Return the ASCII format string that identifies this format.
845
Note that in pre format ?? repositories the format string is
3081
Note that in pre format ?? repositories the format string is
846
3082
not permitted nor written to disk.
848
3084
raise NotImplementedError(self.get_format_string)
850
3086
def get_format_description(self):
851
"""Return the short desciption for this format."""
3087
"""Return the short description for this format."""
852
3088
raise NotImplementedError(self.get_format_description)
854
def _get_revision_store(self, repo_transport, control_files):
855
"""Return the revision store object for this a_bzrdir."""
856
raise NotImplementedError(self._get_revision_store)
858
def _get_text_rev_store(self,
865
"""Common logic for getting a revision store for a repository.
867
see self._get_revision_store for the subclass-overridable method to
868
get the store for a repository.
870
from bzrlib.store.revision.text import TextRevisionStore
871
dir_mode = control_files._dir_mode
872
file_mode = control_files._file_mode
873
text_store =TextStore(transport.clone(name),
875
compressed=compressed,
878
_revision_store = TextRevisionStore(text_store, serializer)
879
return _revision_store
3090
# TODO: this shouldn't be in the base class, it's specific to things that
3091
# use weaves or knits -- mbp 20070207
881
3092
def _get_versioned_file_store(self,
886
versionedfile_class=WeaveFile,
3097
versionedfile_class=None,
3098
versionedfile_kwargs={},
3100
if versionedfile_class is None:
3101
versionedfile_class = self._versionedfile_class
888
3102
weave_transport = control_files._transport.clone(name)
889
3103
dir_mode = control_files._dir_mode
890
3104
file_mode = control_files._file_mode
900
3115
:param a_bzrdir: The bzrdir to put the new repository in it.
901
3116
:param shared: The repository should be initialized as a sharable one.
3117
:returns: The new repository object.
903
3119
This may raise UninitializableFormat if shared repository are not
904
3120
compatible the a_bzrdir.
3122
raise NotImplementedError(self.initialize)
907
3124
def is_supported(self):
908
3125
"""Is this format supported?
910
3127
Supported formats must be initializable and openable.
911
Unsupported formats may not support initialization or committing or
3128
Unsupported formats may not support initialization or committing or
912
3129
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,
916
3154
def open(self, a_bzrdir, _found=False):
917
3155
"""Return an instance of this format for the bzrdir a_bzrdir.
919
3157
_found is a private parameter, do not use it.
921
3159
raise NotImplementedError(self.open)
924
def register_format(klass, format):
925
klass._formats[format.get_format_string()] = format
928
def set_default_format(klass, format):
929
klass._default_format = format
932
def unregister_format(klass, format):
933
assert klass._formats[format.get_format_string()] is format
934
del klass._formats[format.get_format_string()]
937
class PreSplitOutRepositoryFormat(RepositoryFormat):
938
"""Base class for the pre split out repository formats."""
940
def initialize(self, a_bzrdir, shared=False, _internal=False):
941
"""Create a weave repository.
943
TODO: when creating split out bzr branch formats, move this to a common
944
base for Format5, Format6. or something like that.
946
from bzrlib.weavefile import write_weave_v5
947
from bzrlib.weave import Weave
950
raise errors.IncompatibleFormat(self, a_bzrdir._format)
953
# always initialized when the bzrdir is.
954
return self.open(a_bzrdir, _found=True)
956
# Create an empty weave
958
bzrlib.weavefile.write_weave_v5(Weave(), sio)
959
empty_weave = sio.getvalue()
961
mutter('creating repository in %s.', a_bzrdir.transport.base)
962
dirs = ['revision-store', 'weaves']
963
files = [('inventory.weave', StringIO(empty_weave)),
966
# FIXME: RBC 20060125 dont peek under the covers
967
# NB: no need to escape relative paths that are url safe.
968
control_files = LockableFiles(a_bzrdir.transport, 'branch-lock',
970
control_files.create_lock()
971
control_files.lock_write()
972
control_files._transport.mkdir_multi(dirs,
973
mode=control_files._dir_mode)
975
for file, content in files:
976
control_files.put(file, content)
978
control_files.unlock()
979
return self.open(a_bzrdir, _found=True)
981
def _get_control_store(self, repo_transport, control_files):
982
"""Return the control store for this repository."""
983
return self._get_versioned_file_store('',
988
def _get_text_store(self, transport, control_files):
989
"""Get a store for file texts for this format."""
990
raise NotImplementedError(self._get_text_store)
992
def open(self, a_bzrdir, _found=False):
993
"""See RepositoryFormat.open()."""
995
# we are being called directly and must probe.
996
raise NotImplementedError
998
repo_transport = a_bzrdir.get_repository_transport(None)
999
control_files = a_bzrdir._control_files
1000
text_store = self._get_text_store(repo_transport, control_files)
1001
control_store = self._get_control_store(repo_transport, control_files)
1002
_revision_store = self._get_revision_store(repo_transport, control_files)
1003
return AllInOneRepository(_format=self,
1005
_revision_store=_revision_store,
1006
control_store=control_store,
1007
text_store=text_store)
1010
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1011
"""Bzr repository format 4.
1013
This repository format has:
1015
- TextStores for texts, inventories,revisions.
1017
This format is deprecated: it indexes texts using a text id which is
1018
removed in format 5; initializationa and write support for this format
1023
super(RepositoryFormat4, self).__init__()
1024
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat4()
1026
def get_format_description(self):
1027
"""See RepositoryFormat.get_format_description()."""
1028
return "Repository format 4"
1030
def initialize(self, url, shared=False, _internal=False):
1031
"""Format 4 branches cannot be created."""
1032
raise errors.UninitializableFormat(self)
1034
def is_supported(self):
1035
"""Format 4 is not supported.
1037
It is not supported because the model changed from 4 to 5 and the
1038
conversion logic is expensive - so doing it on the fly was not
1043
def _get_control_store(self, repo_transport, control_files):
1044
"""Format 4 repositories have no formal control store at this point.
1046
This will cause any control-file-needing apis to fail - this is desired.
1050
def _get_revision_store(self, repo_transport, control_files):
1051
"""See RepositoryFormat._get_revision_store()."""
1052
from bzrlib.xml4 import serializer_v4
1053
return self._get_text_rev_store(repo_transport,
1056
serializer=serializer_v4)
1058
def _get_text_store(self, transport, control_files):
1059
"""See RepositoryFormat._get_text_store()."""
1062
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1063
"""Bzr control format 5.
1065
This repository format has:
1066
- weaves for file texts and inventory
1068
- TextStores for revisions and signatures.
1072
super(RepositoryFormat5, self).__init__()
1073
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat5()
1075
def get_format_description(self):
1076
"""See RepositoryFormat.get_format_description()."""
1077
return "Weave repository format 5"
1079
def _get_revision_store(self, repo_transport, control_files):
1080
"""See RepositoryFormat._get_revision_store()."""
1081
"""Return the revision store object for this a_bzrdir."""
1082
return self._get_text_rev_store(repo_transport,
1087
def _get_text_store(self, transport, control_files):
1088
"""See RepositoryFormat._get_text_store()."""
1089
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1092
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1093
"""Bzr control format 6.
1095
This repository format has:
1096
- weaves for file texts and inventory
1097
- hash subdirectory based stores.
1098
- TextStores for revisions and signatures.
1102
super(RepositoryFormat6, self).__init__()
1103
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat6()
1105
def get_format_description(self):
1106
"""See RepositoryFormat.get_format_description()."""
1107
return "Weave repository format 6"
1109
def _get_revision_store(self, repo_transport, control_files):
1110
"""See RepositoryFormat._get_revision_store()."""
1111
return self._get_text_rev_store(repo_transport,
1117
def _get_text_store(self, transport, control_files):
1118
"""See RepositoryFormat._get_text_store()."""
1119
return self._get_versioned_file_store('weaves', transport, control_files)
1122
3162
class MetaDirRepositoryFormat(RepositoryFormat):
1123
"""Common base class for the new repositories using the metadir layour."""
3163
"""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
1125
3175
def __init__(self):
1126
3176
super(MetaDirRepositoryFormat, self).__init__()
1127
self._matchingbzrdir = bzrlib.bzrdir.BzrDirMetaFormat1()
1129
3178
def _create_control_files(self, a_bzrdir):
1130
3179
"""Create the required files and the initial control_files object."""
1131
# FIXME: RBC 20060125 dont peek under the covers
3180
# FIXME: RBC 20060125 don't peek under the covers
1132
3181
# NB: no need to escape relative paths that are url safe.
1133
3182
repository_transport = a_bzrdir.get_repository_transport(self)
1134
control_files = LockableFiles(repository_transport, 'lock', LockDir)
3183
control_files = lockable_files.LockableFiles(repository_transport,
3184
'lock', lockdir.LockDir)
1135
3185
control_files.create_lock()
1136
3186
return control_files
1139
3189
"""Upload the initial blank content."""
1140
3190
control_files = self._create_control_files(a_bzrdir)
1141
3191
control_files.lock_write()
3192
transport = control_files._transport
3194
utf8_files += [('shared-storage', '')]
1143
control_files._transport.mkdir_multi(dirs,
1144
mode=control_files._dir_mode)
1145
for file, content in files:
1146
control_files.put(file, content)
1147
for file, content in utf8_files:
1148
control_files.put_utf8(file, content)
1150
control_files.put_utf8('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())
1152
3204
control_files.unlock()
1155
class RepositoryFormat7(MetaDirRepositoryFormat):
1156
"""Bzr repository 7.
1158
This repository format has:
1159
- weaves for file texts and inventory
1160
- hash subdirectory based stores.
1161
- TextStores for revisions and signatures.
1162
- a format marker of its own
1163
- an optional 'shared-storage' flag
1164
- an optional 'no-working-trees' flag
1167
def _get_control_store(self, repo_transport, control_files):
1168
"""Return the control store for this repository."""
1169
return self._get_versioned_file_store('',
1174
def get_format_string(self):
1175
"""See RepositoryFormat.get_format_string()."""
1176
return "Bazaar-NG Repository format 7"
1178
def get_format_description(self):
1179
"""See RepositoryFormat.get_format_description()."""
1180
return "Weave repository format 7"
1182
def _get_revision_store(self, repo_transport, control_files):
1183
"""See RepositoryFormat._get_revision_store()."""
1184
return self._get_text_rev_store(repo_transport,
1191
def _get_text_store(self, transport, control_files):
1192
"""See RepositoryFormat._get_text_store()."""
1193
return self._get_versioned_file_store('weaves',
1197
def initialize(self, a_bzrdir, shared=False):
1198
"""Create a weave repository.
1200
:param shared: If true the repository will be initialized as a shared
1203
from bzrlib.weavefile import write_weave_v5
1204
from bzrlib.weave import Weave
1206
# Create an empty weave
1208
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1209
empty_weave = sio.getvalue()
1211
mutter('creating repository in %s.', a_bzrdir.transport.base)
1212
dirs = ['revision-store', 'weaves']
1213
files = [('inventory.weave', StringIO(empty_weave)),
1215
utf8_files = [('format', self.get_format_string())]
1217
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1218
return self.open(a_bzrdir=a_bzrdir, _found=True)
1220
def open(self, a_bzrdir, _found=False, _override_transport=None):
1221
"""See RepositoryFormat.open().
1223
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1224
repository at a slightly different url
1225
than normal. I.e. during 'upgrade'.
1228
format = RepositoryFormat.find_format(a_bzrdir)
1229
assert format.__class__ == self.__class__
1230
if _override_transport is not None:
1231
repo_transport = _override_transport
1233
repo_transport = a_bzrdir.get_repository_transport(None)
1234
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1235
text_store = self._get_text_store(repo_transport, control_files)
1236
control_store = self._get_control_store(repo_transport, control_files)
1237
_revision_store = self._get_revision_store(repo_transport, control_files)
1238
return MetaDirRepository(_format=self,
1240
control_files=control_files,
1241
_revision_store=_revision_store,
1242
control_store=control_store,
1243
text_store=text_store)
1246
class RepositoryFormatKnit1(MetaDirRepositoryFormat):
1247
"""Bzr repository knit format 1.
1249
This repository format has:
1250
- knits for file texts and inventory
1251
- hash subdirectory based stores.
1252
- knits for revisions and signatures
1253
- TextStores for revisions and signatures.
1254
- a format marker of its own
1255
- an optional 'shared-storage' flag
1256
- an optional 'no-working-trees' flag
1259
This format was introduced in bzr 0.8.
1262
def _get_control_store(self, repo_transport, control_files):
1263
"""Return the control store for this repository."""
1264
return VersionedFileStore(
1267
file_mode=control_files._file_mode,
1268
versionedfile_class=KnitVersionedFile,
1269
versionedfile_kwargs={'factory':KnitPlainFactory()},
1272
def get_format_string(self):
1273
"""See RepositoryFormat.get_format_string()."""
1274
return "Bazaar-NG Knit Repository Format 1"
1276
def get_format_description(self):
1277
"""See RepositoryFormat.get_format_description()."""
1278
return "Knit repository format 1"
1280
def _get_revision_store(self, repo_transport, control_files):
1281
"""See RepositoryFormat._get_revision_store()."""
1282
from bzrlib.store.revision.knit import KnitRevisionStore
1283
versioned_file_store = VersionedFileStore(
1285
file_mode=control_files._file_mode,
1288
versionedfile_class=KnitVersionedFile,
1289
versionedfile_kwargs={'delta':False, 'factory':KnitPlainFactory()},
1292
return KnitRevisionStore(versioned_file_store)
1294
def _get_text_store(self, transport, control_files):
1295
"""See RepositoryFormat._get_text_store()."""
1296
return self._get_versioned_file_store('knits',
1299
versionedfile_class=KnitVersionedFile,
1302
def initialize(self, a_bzrdir, shared=False):
1303
"""Create a knit format 1 repository.
1305
:param a_bzrdir: bzrdir to contain the new repository; must already
1307
:param shared: If true the repository will be initialized as a shared
1310
mutter('creating repository in %s.', a_bzrdir.transport.base)
1311
dirs = ['revision-store', 'knits']
1313
utf8_files = [('format', self.get_format_string())]
1315
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1316
repo_transport = a_bzrdir.get_repository_transport(None)
1317
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1318
control_store = self._get_control_store(repo_transport, control_files)
1319
transaction = bzrlib.transactions.WriteTransaction()
1320
# trigger a write of the inventory store.
1321
control_store.get_weave_or_empty('inventory', transaction)
1322
_revision_store = self._get_revision_store(repo_transport, control_files)
1323
_revision_store.has_revision_id('A', transaction)
1324
_revision_store.get_signature_file(transaction)
1325
return self.open(a_bzrdir=a_bzrdir, _found=True)
1327
def open(self, a_bzrdir, _found=False, _override_transport=None):
1328
"""See RepositoryFormat.open().
1330
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1331
repository at a slightly different url
1332
than normal. I.e. during 'upgrade'.
1335
format = RepositoryFormat.find_format(a_bzrdir)
1336
assert format.__class__ == self.__class__
1337
if _override_transport is not None:
1338
repo_transport = _override_transport
1340
repo_transport = a_bzrdir.get_repository_transport(None)
1341
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1342
text_store = self._get_text_store(repo_transport, control_files)
1343
control_store = self._get_control_store(repo_transport, control_files)
1344
_revision_store = self._get_revision_store(repo_transport, control_files)
1345
return KnitRepository(_format=self,
1347
control_files=control_files,
1348
_revision_store=_revision_store,
1349
control_store=control_store,
1350
text_store=text_store)
1353
# formats which have no format string are not discoverable
1354
# and not independently creatable, so are not registered.
1355
RepositoryFormat.register_format(RepositoryFormat7())
1356
_default_format = RepositoryFormatKnit1()
1357
RepositoryFormat.register_format(_default_format)
1358
RepositoryFormat.set_default_format(_default_format)
1359
_legacy_formats = [RepositoryFormat4(),
1360
RepositoryFormat5(),
1361
RepositoryFormat6()]
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',
1364
3330
class InterRepository(InterObject):
1365
3331
"""This class represents operations taking place between two repositories.
1367
3333
Its instances have methods like copy_content and fetch, and contain
1368
references to the source and target repositories these operations can be
3334
references to the source and target repositories these operations can be
1369
3335
carried out on.
1371
3337
Often we will provide convenience methods on 'repository' which carry out
1373
3339
InterRepository.get(other).method_name(parameters).
3342
_walk_to_common_revisions_batch_size = 50
1377
3344
"""The available optimised InterRepository types."""
1379
3346
@needs_write_lock
1380
def copy_content(self, revision_id=None, basis=None):
3347
def copy_content(self, revision_id=None):
1381
3348
"""Make a complete copy of the content in self into destination.
1383
This is a destructive operation! Do not use it on existing
3350
This is a destructive operation! Do not use it on existing
1386
3353
:param revision_id: Only copy the content needed to construct
1387
3354
revision_id and its parents.
1388
:param basis: Copy the needed data preferentially from basis.
1391
3357
self.target.set_make_working_trees(self.source.make_working_trees())
1392
3358
except NotImplementedError:
1394
# grab the basis available data
1395
if basis is not None:
1396
self.target.fetch(basis, revision_id=revision_id)
1397
# but dont bother fetching if we have the needed data now.
1398
if (revision_id not in (None, NULL_REVISION) and
1399
self.target.has_revision(revision_id)):
1401
3360
self.target.fetch(self.source, revision_id=revision_id)
1403
def _double_lock(self, lock_source, lock_target):
1404
"""Take out too locks, rolling back the first if the second throws."""
1409
# we want to ensure that we don't leave source locked by mistake.
1410
# and any error on target should not confuse source.
1411
self.source.unlock()
1414
3362
@needs_write_lock
1415
def fetch(self, revision_id=None, pb=None):
3363
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
1416
3365
"""Fetch the content required to construct revision_id.
1418
The content is copied from source to target.
3367
The content is copied from self.source to self.target.
1420
3369
:param revision_id: if None all content is copied, if NULL_REVISION no
1421
3370
content is copied.
1422
:param pb: optional progress bar to use for progress reports. If not
1423
provided a default one will be created.
1425
Returns the copied revision count and the failed revisions in a tuple:
1428
from bzrlib.fetch import GenericRepoFetcher
1429
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1430
self.source, self.source._format, self.target, self.target._format)
1431
f = GenericRepoFetcher(to_repository=self.target,
3374
ui.ui_factory.warn_experimental_format_fetch(self)
3375
from bzrlib.fetch import RepoFetcher
3376
# See <https://launchpad.net/bugs/456077> asking for a warning here
3377
if self.source._format.network_name() != self.target._format.network_name():
3378
ui.ui_factory.show_user_warning('cross_format_fetch',
3379
from_format=self.source._format,
3380
to_format=self.target._format)
3381
f = RepoFetcher(to_repository=self.target,
1432
3382
from_repository=self.source,
1433
3383
last_revision=revision_id,
1435
return f.count_copied, f.failed_revisions
1437
def lock_read(self):
1438
"""Take out a logical read lock.
1440
This will lock the source branch and the target branch. The source gets
1441
a read lock and the target a read lock.
1443
self._double_lock(self.source.lock_read, self.target.lock_read)
1445
def lock_write(self):
1446
"""Take out a logical write lock.
1448
This will lock the source branch and the target branch. The source gets
1449
a read lock and the target a write lock.
1451
self._double_lock(self.source.lock_read, self.target.lock_write)
3384
fetch_spec=fetch_spec,
3385
find_ghosts=find_ghosts)
3387
def _walk_to_common_revisions(self, revision_ids):
3388
"""Walk out from revision_ids in source to revisions target has.
3390
:param revision_ids: The start point for the search.
3391
:return: A set of revision ids.
3393
target_graph = self.target.get_graph()
3394
revision_ids = frozenset(revision_ids)
3395
missing_revs = set()
3396
source_graph = self.source.get_graph()
3397
# ensure we don't pay silly lookup costs.
3398
searcher = source_graph._make_breadth_first_searcher(revision_ids)
3399
null_set = frozenset([_mod_revision.NULL_REVISION])
3400
searcher_exhausted = False
3404
# Iterate the searcher until we have enough next_revs
3405
while len(next_revs) < self._walk_to_common_revisions_batch_size:
3407
next_revs_part, ghosts_part = searcher.next_with_ghosts()
3408
next_revs.update(next_revs_part)
3409
ghosts.update(ghosts_part)
3410
except StopIteration:
3411
searcher_exhausted = True
3413
# If there are ghosts in the source graph, and the caller asked for
3414
# them, make sure that they are present in the target.
3415
# We don't care about other ghosts as we can't fetch them and
3416
# haven't been asked to.
3417
ghosts_to_check = set(revision_ids.intersection(ghosts))
3418
revs_to_get = set(next_revs).union(ghosts_to_check)
3420
have_revs = set(target_graph.get_parent_map(revs_to_get))
3421
# we always have NULL_REVISION present.
3422
have_revs = have_revs.union(null_set)
3423
# Check if the target is missing any ghosts we need.
3424
ghosts_to_check.difference_update(have_revs)
3426
# One of the caller's revision_ids is a ghost in both the
3427
# source and the target.
3428
raise errors.NoSuchRevision(
3429
self.source, ghosts_to_check.pop())
3430
missing_revs.update(next_revs - have_revs)
3431
# Because we may have walked past the original stop point, make
3432
# sure everything is stopped
3433
stop_revs = searcher.find_seen_ancestors(have_revs)
3434
searcher.stop_searching_any(stop_revs)
3435
if searcher_exhausted:
3437
return searcher.get_result()
1453
3439
@needs_read_lock
1454
def missing_revision_ids(self, revision_id=None):
3440
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1455
3441
"""Return the revision ids that source has that target does not.
1457
These are returned in topological order.
1459
3443
:param revision_id: only return revision ids included by this
3445
:param find_ghosts: If True find missing revisions in deep history
3446
rather than just finding the surface difference.
3447
:return: A bzrlib.graph.SearchResult.
3449
# stop searching at found target revisions.
3450
if not find_ghosts and revision_id is not None:
3451
return self._walk_to_common_revisions([revision_id])
1462
3452
# generic, possibly worst case, slow code path.
1463
3453
target_ids = set(self.target.all_revision_ids())
1464
3454
if revision_id is not None:
1465
3455
source_ids = self.source.get_ancestry(revision_id)
1466
assert source_ids[0] == None
3456
if source_ids[0] is not None:
3457
raise AssertionError()
1467
3458
source_ids.pop(0)
1469
3460
source_ids = self.source.all_revision_ids()
1470
3461
result_set = set(source_ids).difference(target_ids)
1471
# this may look like a no-op: its not. It preserves the ordering
1472
# other_ids had while only returning the members from other_ids
1473
# that we've decided we need.
1474
return [rev_id for rev_id in source_ids if rev_id in result_set]
1477
"""Release the locks on source and target."""
3462
return self.source.revision_ids_to_search_result(result_set)
3465
def _same_model(source, target):
3466
"""True if source and target have the same data representation.
3468
Note: this is always called on the base class; overriding it in a
3469
subclass will have no effect.
1479
self.target.unlock()
1481
self.source.unlock()
1484
class InterWeaveRepo(InterRepository):
1485
"""Optimised code paths between Weave based repositories."""
1487
_matching_repo_format = RepositoryFormat7()
1488
"""Repository format for testing with."""
3472
InterRepository._assert_same_model(source, target)
3474
except errors.IncompatibleRepositories, e:
3478
def _assert_same_model(source, target):
3479
"""Raise an exception if two repositories do not use the same model.
3481
if source.supports_rich_root() != target.supports_rich_root():
3482
raise errors.IncompatibleRepositories(source, target,
3483
"different rich-root support")
3484
if source._serializer != target._serializer:
3485
raise errors.IncompatibleRepositories(source, target,
3486
"different serializers")
3489
class InterSameDataRepository(InterRepository):
3490
"""Code for converting between repositories that represent the same data.
3492
Data format and model must match for this to work.
3496
def _get_repo_format_to_test(self):
3497
"""Repository format for testing with.
3499
InterSameData can pull from subtree to subtree and from non-subtree to
3500
non-subtree, so we test this with the richest repository format.
3502
from bzrlib.repofmt import knitrepo
3503
return knitrepo.RepositoryFormatKnit3()
3506
def is_compatible(source, target):
3507
return InterRepository._same_model(source, target)
3510
class InterWeaveRepo(InterSameDataRepository):
3511
"""Optimised code paths between Weave based repositories.
3513
This should be in bzrlib/repofmt/weaverepo.py but we have not yet
3514
implemented lazy inter-object optimisation.
3518
def _get_repo_format_to_test(self):
3519
from bzrlib.repofmt import weaverepo
3520
return weaverepo.RepositoryFormat7()
1491
3523
def is_compatible(source, target):
1492
3524
"""Be compatible with known Weave formats.
1494
We dont test for the stores being of specific types becase that
1495
could lead to confusing results, and there is no need to be
3526
We don't test for the stores being of specific types because that
3527
could lead to confusing results, and there is no need to be
1496
3528
overly general.
3530
from bzrlib.repofmt.weaverepo import (
1499
3536
return (isinstance(source._format, (RepositoryFormat5,
1500
3537
RepositoryFormat6,
1504
3541
RepositoryFormat7)))
1505
3542
except AttributeError:
1508
3545
@needs_write_lock
1509
def copy_content(self, revision_id=None, basis=None):
3546
def copy_content(self, revision_id=None):
1510
3547
"""See InterRepository.copy_content()."""
1511
3548
# weave specific optimised path:
1512
if basis is not None:
1513
# copy the basis in, then fetch remaining data.
1514
basis.copy_content_into(self.target, revision_id)
1515
# the basis copy_content_into could misset this.
3550
self.target.set_make_working_trees(self.source.make_working_trees())
3551
except (errors.RepositoryUpgradeRequired, NotImplemented):
3553
# FIXME do not peek!
3554
if self.source._transport.listable():
3555
pb = ui.ui_factory.nested_progress_bar()
1517
self.target.set_make_working_trees(self.source.make_working_trees())
1518
except NotImplementedError:
3557
self.target.texts.insert_record_stream(
3558
self.source.texts.get_record_stream(
3559
self.source.texts.keys(), 'topological', False))
3560
pb.update('Copying inventory', 0, 1)
3561
self.target.inventories.insert_record_stream(
3562
self.source.inventories.get_record_stream(
3563
self.source.inventories.keys(), 'topological', False))
3564
self.target.signatures.insert_record_stream(
3565
self.source.signatures.get_record_stream(
3566
self.source.signatures.keys(),
3568
self.target.revisions.insert_record_stream(
3569
self.source.revisions.get_record_stream(
3570
self.source.revisions.keys(),
3571
'topological', True))
1520
3575
self.target.fetch(self.source, revision_id=revision_id)
1523
self.target.set_make_working_trees(self.source.make_working_trees())
1524
except NotImplementedError:
1526
# FIXME do not peek!
1527
if self.source.control_files._transport.listable():
1528
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1530
self.target.weave_store.copy_all_ids(
1531
self.source.weave_store,
1533
from_transaction=self.source.get_transaction(),
1534
to_transaction=self.target.get_transaction())
1535
pb.update('copying inventory', 0, 1)
1536
self.target.control_weaves.copy_multi(
1537
self.source.control_weaves, ['inventory'],
1538
from_transaction=self.source.get_transaction(),
1539
to_transaction=self.target.get_transaction())
1540
self.target._revision_store.text_store.copy_all_ids(
1541
self.source._revision_store.text_store,
1546
self.target.fetch(self.source, revision_id=revision_id)
1549
def fetch(self, revision_id=None, pb=None):
1550
"""See InterRepository.fetch()."""
1551
from bzrlib.fetch import GenericRepoFetcher
1552
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1553
self.source, self.source._format, self.target, self.target._format)
1554
f = GenericRepoFetcher(to_repository=self.target,
1555
from_repository=self.source,
1556
last_revision=revision_id,
1558
return f.count_copied, f.failed_revisions
1560
3577
@needs_read_lock
1561
def missing_revision_ids(self, revision_id=None):
3578
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1562
3579
"""See InterRepository.missing_revision_ids()."""
1563
3580
# we want all revisions to satisfy revision_id in source.
1564
# but we dont want to stat every file here and there.
1565
# we want then, all revisions other needs to satisfy revision_id
3581
# but we don't want to stat every file here and there.
3582
# we want then, all revisions other needs to satisfy revision_id
1566
3583
# checked, but not those that we have locally.
1567
# so the first thing is to get a subset of the revisions to
3584
# so the first thing is to get a subset of the revisions to
1568
3585
# satisfy revision_id in source, and then eliminate those that
1569
# we do already have.
1570
# this is slow on high latency connection to self, but as as this
1571
# disk format scales terribly for push anyway due to rewriting
3586
# we do already have.
3587
# this is slow on high latency connection to self, but as this
3588
# disk format scales terribly for push anyway due to rewriting
1572
3589
# inventory.weave, this is considered acceptable.
1573
3590
# - RBC 20060209
1574
3591
if revision_id is not None:
1575
3592
source_ids = self.source.get_ancestry(revision_id)
1576
assert source_ids[0] == None
3593
if source_ids[0] is not None:
3594
raise AssertionError()
1577
3595
source_ids.pop(0)
1579
3597
source_ids = self.source._all_possible_ids()
1580
3598
source_ids_set = set(source_ids)
1581
3599
# source_ids is the worst possible case we may need to pull.
1582
3600
# now we want to filter source_ids against what we actually
1583
# have in target, but dont try to check for existence where we know
3601
# have in target, but don't try to check for existence where we know
1584
3602
# we do not have a revision as that would be pointless.
1585
3603
target_ids = set(self.target._all_possible_ids())
1586
3604
possibly_present_revisions = target_ids.intersection(source_ids_set)
1587
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3605
actually_present_revisions = set(
3606
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1588
3607
required_revisions = source_ids_set.difference(actually_present_revisions)
1589
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
1590
3608
if revision_id is not None:
1591
3609
# we used get_ancestry to determine source_ids then we are assured all
1592
3610
# revisions referenced are present as they are installed in topological order.
1593
3611
# and the tip revision was validated by get_ancestry.
1594
return required_topo_revisions
3612
result_set = required_revisions
1596
# if we just grabbed the possibly available ids, then
3614
# if we just grabbed the possibly available ids, then
1597
3615
# we only have an estimate of whats available and need to validate
1598
3616
# that against the revision records.
1599
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1602
class InterKnitRepo(InterRepository):
3618
self.source._eliminate_revisions_not_present(required_revisions))
3619
return self.source.revision_ids_to_search_result(result_set)
3622
class InterKnitRepo(InterSameDataRepository):
1603
3623
"""Optimised code paths between Knit based repositories."""
1605
_matching_repo_format = RepositoryFormatKnit1()
1606
"""Repository format for testing with."""
3626
def _get_repo_format_to_test(self):
3627
from bzrlib.repofmt import knitrepo
3628
return knitrepo.RepositoryFormatKnit1()
1609
3631
def is_compatible(source, target):
1610
3632
"""Be compatible with known Knit formats.
1612
We dont test for the stores being of specific types becase that
1613
could lead to confusing results, and there is no need to be
3634
We don't test for the stores being of specific types because that
3635
could lead to confusing results, and there is no need to be
1614
3636
overly general.
3638
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
1617
return (isinstance(source._format, (RepositoryFormatKnit1)) and
1618
isinstance(target._format, (RepositoryFormatKnit1)))
3640
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
3641
isinstance(target._format, RepositoryFormatKnit))
1619
3642
except AttributeError:
1623
def fetch(self, revision_id=None, pb=None):
1624
"""See InterRepository.fetch()."""
1625
from bzrlib.fetch import KnitRepoFetcher
1626
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1627
self.source, self.source._format, self.target, self.target._format)
1628
f = KnitRepoFetcher(to_repository=self.target,
1629
from_repository=self.source,
1630
last_revision=revision_id,
1632
return f.count_copied, f.failed_revisions
3644
return are_knits and InterRepository._same_model(source, target)
1634
3646
@needs_read_lock
1635
def missing_revision_ids(self, revision_id=None):
3647
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1636
3648
"""See InterRepository.missing_revision_ids()."""
1637
3649
if revision_id is not None:
1638
3650
source_ids = self.source.get_ancestry(revision_id)
1639
assert source_ids[0] == None
3651
if source_ids[0] is not None:
3652
raise AssertionError()
1640
3653
source_ids.pop(0)
1642
source_ids = self.source._all_possible_ids()
3655
source_ids = self.source.all_revision_ids()
1643
3656
source_ids_set = set(source_ids)
1644
3657
# source_ids is the worst possible case we may need to pull.
1645
3658
# now we want to filter source_ids against what we actually
1646
# have in target, but dont try to check for existence where we know
3659
# have in target, but don't try to check for existence where we know
1647
3660
# we do not have a revision as that would be pointless.
1648
target_ids = set(self.target._all_possible_ids())
3661
target_ids = set(self.target.all_revision_ids())
1649
3662
possibly_present_revisions = target_ids.intersection(source_ids_set)
1650
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3663
actually_present_revisions = set(
3664
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1651
3665
required_revisions = source_ids_set.difference(actually_present_revisions)
1652
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
1653
3666
if revision_id is not None:
1654
3667
# we used get_ancestry to determine source_ids then we are assured all
1655
3668
# revisions referenced are present as they are installed in topological order.
1656
3669
# and the tip revision was validated by get_ancestry.
1657
return required_topo_revisions
3670
result_set = required_revisions
1659
# if we just grabbed the possibly available ids, then
3672
# if we just grabbed the possibly available ids, then
1660
3673
# we only have an estimate of whats available and need to validate
1661
3674
# that against the revision records.
1662
return self.source._eliminate_revisions_not_present(required_topo_revisions)
3676
self.source._eliminate_revisions_not_present(required_revisions))
3677
return self.source.revision_ids_to_search_result(result_set)
3680
class InterDifferingSerializer(InterRepository):
3683
def _get_repo_format_to_test(self):
3687
def is_compatible(source, target):
3688
"""Be compatible with Knit2 source and Knit3 target"""
3689
# This is redundant with format.check_conversion_target(), however that
3690
# raises an exception, and we just want to say "False" as in we won't
3691
# support converting between these formats.
3692
if 'IDS_never' in debug.debug_flags:
3694
if source.supports_rich_root() and not target.supports_rich_root():
3696
if (source._format.supports_tree_reference
3697
and not target._format.supports_tree_reference):
3699
if target._fallback_repositories and target._format.supports_chks:
3700
# IDS doesn't know how to copy CHKs for the parent inventories it
3701
# adds to stacked repos.
3703
if 'IDS_always' in debug.debug_flags:
3705
# Only use this code path for local source and target. IDS does far
3706
# too much IO (both bandwidth and roundtrips) over a network.
3707
if not source.bzrdir.transport.base.startswith('file:///'):
3709
if not target.bzrdir.transport.base.startswith('file:///'):
3713
def _get_trees(self, revision_ids, cache):
3715
for rev_id in revision_ids:
3717
possible_trees.append((rev_id, cache[rev_id]))
3719
# Not cached, but inventory might be present anyway.
3721
tree = self.source.revision_tree(rev_id)
3722
except errors.NoSuchRevision:
3723
# Nope, parent is ghost.
3726
cache[rev_id] = tree
3727
possible_trees.append((rev_id, tree))
3728
return possible_trees
3730
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3731
"""Get the best delta and base for this revision.
3733
:return: (basis_id, delta)
3736
# Generate deltas against each tree, to find the shortest.
3737
texts_possibly_new_in_tree = set()
3738
for basis_id, basis_tree in possible_trees:
3739
delta = tree.inventory._make_delta(basis_tree.inventory)
3740
for old_path, new_path, file_id, new_entry in delta:
3741
if new_path is None:
3742
# This file_id isn't present in the new rev, so we don't
3746
# Rich roots are handled elsewhere...
3748
kind = new_entry.kind
3749
if kind != 'directory' and kind != 'file':
3750
# No text record associated with this inventory entry.
3752
# This is a directory or file that has changed somehow.
3753
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3754
deltas.append((len(delta), basis_id, delta))
3756
return deltas[0][1:]
3758
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3759
"""Find all parent revisions that are absent, but for which the
3760
inventory is present, and copy those inventories.
3762
This is necessary to preserve correctness when the source is stacked
3763
without fallbacks configured. (Note that in cases like upgrade the
3764
source may be not have _fallback_repositories even though it is
3768
for parents in parent_map.values():
3769
parent_revs.update(parents)
3770
present_parents = self.source.get_parent_map(parent_revs)
3771
absent_parents = set(parent_revs).difference(present_parents)
3772
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3773
(rev_id,) for rev_id in absent_parents)
3774
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3775
for parent_tree in self.source.revision_trees(parent_inv_ids):
3776
current_revision_id = parent_tree.get_revision_id()
3777
parents_parents_keys = parent_invs_keys_for_stacking[
3778
(current_revision_id,)]
3779
parents_parents = [key[-1] for key in parents_parents_keys]
3780
basis_id = _mod_revision.NULL_REVISION
3781
basis_tree = self.source.revision_tree(basis_id)
3782
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3783
self.target.add_inventory_by_delta(
3784
basis_id, delta, current_revision_id, parents_parents)
3785
cache[current_revision_id] = parent_tree
3787
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3788
"""Fetch across a few revisions.
3790
:param revision_ids: The revisions to copy
3791
:param basis_id: The revision_id of a tree that must be in cache, used
3792
as a basis for delta when no other base is available
3793
:param cache: A cache of RevisionTrees that we can use.
3794
:param a_graph: A Graph object to determine the heads() of the
3795
rich-root data stream.
3796
:return: The revision_id of the last converted tree. The RevisionTree
3797
for it will be in cache
3799
# Walk though all revisions; get inventory deltas, copy referenced
3800
# texts that delta references, insert the delta, revision and
3802
root_keys_to_create = set()
3805
pending_revisions = []
3806
parent_map = self.source.get_parent_map(revision_ids)
3807
self._fetch_parent_invs_for_stacking(parent_map, cache)
3808
self.source._safe_to_return_from_cache = True
3809
for tree in self.source.revision_trees(revision_ids):
3810
# Find a inventory delta for this revision.
3811
# Find text entries that need to be copied, too.
3812
current_revision_id = tree.get_revision_id()
3813
parent_ids = parent_map.get(current_revision_id, ())
3814
parent_trees = self._get_trees(parent_ids, cache)
3815
possible_trees = list(parent_trees)
3816
if len(possible_trees) == 0:
3817
# There either aren't any parents, or the parents are ghosts,
3818
# so just use the last converted tree.
3819
possible_trees.append((basis_id, cache[basis_id]))
3820
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3822
revision = self.source.get_revision(current_revision_id)
3823
pending_deltas.append((basis_id, delta,
3824
current_revision_id, revision.parent_ids))
3825
if self._converting_to_rich_root:
3826
self._revision_id_to_root_id[current_revision_id] = \
3828
# Determine which texts are in present in this revision but not in
3829
# any of the available parents.
3830
texts_possibly_new_in_tree = set()
3831
for old_path, new_path, file_id, entry in delta:
3832
if new_path is None:
3833
# This file_id isn't present in the new rev
3837
if not self.target.supports_rich_root():
3838
# The target doesn't support rich root, so we don't
3841
if self._converting_to_rich_root:
3842
# This can't be copied normally, we have to insert
3844
root_keys_to_create.add((file_id, entry.revision))
3847
texts_possibly_new_in_tree.add((file_id, entry.revision))
3848
for basis_id, basis_tree in possible_trees:
3849
basis_inv = basis_tree.inventory
3850
for file_key in list(texts_possibly_new_in_tree):
3851
file_id, file_revision = file_key
3853
entry = basis_inv[file_id]
3854
except errors.NoSuchId:
3856
if entry.revision == file_revision:
3857
texts_possibly_new_in_tree.remove(file_key)
3858
text_keys.update(texts_possibly_new_in_tree)
3859
pending_revisions.append(revision)
3860
cache[current_revision_id] = tree
3861
basis_id = current_revision_id
3862
self.source._safe_to_return_from_cache = False
3864
from_texts = self.source.texts
3865
to_texts = self.target.texts
3866
if root_keys_to_create:
3867
root_stream = _mod_fetch._new_root_data_stream(
3868
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3869
self.source, graph=a_graph)
3870
to_texts.insert_record_stream(root_stream)
3871
to_texts.insert_record_stream(from_texts.get_record_stream(
3872
text_keys, self.target._format._fetch_order,
3873
not self.target._format._fetch_uses_deltas))
3874
# insert inventory deltas
3875
for delta in pending_deltas:
3876
self.target.add_inventory_by_delta(*delta)
3877
if self.target._fallback_repositories:
3878
# Make sure this stacked repository has all the parent inventories
3879
# for the new revisions that we are about to insert. We do this
3880
# before adding the revisions so that no revision is added until
3881
# all the inventories it may depend on are added.
3882
# Note that this is overzealous, as we may have fetched these in an
3885
revision_ids = set()
3886
for revision in pending_revisions:
3887
revision_ids.add(revision.revision_id)
3888
parent_ids.update(revision.parent_ids)
3889
parent_ids.difference_update(revision_ids)
3890
parent_ids.discard(_mod_revision.NULL_REVISION)
3891
parent_map = self.source.get_parent_map(parent_ids)
3892
# we iterate over parent_map and not parent_ids because we don't
3893
# want to try copying any revision which is a ghost
3894
for parent_tree in self.source.revision_trees(parent_map):
3895
current_revision_id = parent_tree.get_revision_id()
3896
parents_parents = parent_map[current_revision_id]
3897
possible_trees = self._get_trees(parents_parents, cache)
3898
if len(possible_trees) == 0:
3899
# There either aren't any parents, or the parents are
3900
# ghosts, so just use the last converted tree.
3901
possible_trees.append((basis_id, cache[basis_id]))
3902
basis_id, delta = self._get_delta_for_revision(parent_tree,
3903
parents_parents, possible_trees)
3904
self.target.add_inventory_by_delta(
3905
basis_id, delta, current_revision_id, parents_parents)
3906
# insert signatures and revisions
3907
for revision in pending_revisions:
3909
signature = self.source.get_signature_text(
3910
revision.revision_id)
3911
self.target.add_signature_text(revision.revision_id,
3913
except errors.NoSuchRevision:
3915
self.target.add_revision(revision.revision_id, revision)
3918
def _fetch_all_revisions(self, revision_ids, pb):
3919
"""Fetch everything for the list of revisions.
3921
:param revision_ids: The list of revisions to fetch. Must be in
3923
:param pb: A ProgressTask
3926
basis_id, basis_tree = self._get_basis(revision_ids[0])
3928
cache = lru_cache.LRUCache(100)
3929
cache[basis_id] = basis_tree
3930
del basis_tree # We don't want to hang on to it here
3932
if self._converting_to_rich_root and len(revision_ids) > 100:
3933
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3938
for offset in range(0, len(revision_ids), batch_size):
3939
self.target.start_write_group()
3941
pb.update('Transferring revisions', offset,
3943
batch = revision_ids[offset:offset+batch_size]
3944
basis_id = self._fetch_batch(batch, basis_id, cache,
3947
self.source._safe_to_return_from_cache = False
3948
self.target.abort_write_group()
3951
hint = self.target.commit_write_group()
3954
if hints and self.target._format.pack_compresses:
3955
self.target.pack(hint=hints)
3956
pb.update('Transferring revisions', len(revision_ids),
3960
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
3962
"""See InterRepository.fetch()."""
3963
if fetch_spec is not None:
3964
raise AssertionError("Not implemented yet...")
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
# See <https://launchpad.net/bugs/456077> asking for a warning here
3973
if self.source._format.network_name() != self.target._format.network_name():
3974
ui.ui_factory.show_user_warning('cross_format_fetch',
3975
from_format=self.source._format,
3976
to_format=self.target._format)
3977
revision_ids = self.target.search_missing_revision_ids(self.source,
3978
revision_id, find_ghosts=find_ghosts).get_keys()
3979
if not revision_ids:
3981
revision_ids = tsort.topo_sort(
3982
self.source.get_graph().get_parent_map(revision_ids))
3983
if not revision_ids:
3985
# Walk though all revisions; get inventory deltas, copy referenced
3986
# texts that delta references, insert the delta, revision and
3989
my_pb = ui.ui_factory.nested_progress_bar()
3992
symbol_versioning.warn(
3993
symbol_versioning.deprecated_in((1, 14, 0))
3994
% "pb parameter to fetch()")
3997
self._fetch_all_revisions(revision_ids, pb)
3999
if my_pb is not None:
4001
return len(revision_ids), 0
4003
def _get_basis(self, first_revision_id):
4004
"""Get a revision and tree which exists in the target.
4006
This assumes that first_revision_id is selected for transmission
4007
because all other ancestors are already present. If we can't find an
4008
ancestor we fall back to NULL_REVISION since we know that is safe.
4010
:return: (basis_id, basis_tree)
4012
first_rev = self.source.get_revision(first_revision_id)
4014
basis_id = first_rev.parent_ids[0]
4015
# only valid as a basis if the target has it
4016
self.target.get_revision(basis_id)
4017
# Try to get a basis tree - if its a ghost it will hit the
4018
# NoSuchRevision case.
4019
basis_tree = self.source.revision_tree(basis_id)
4020
except (IndexError, errors.NoSuchRevision):
4021
basis_id = _mod_revision.NULL_REVISION
4022
basis_tree = self.source.revision_tree(basis_id)
4023
return basis_id, basis_tree
4026
InterRepository.register_optimiser(InterDifferingSerializer)
4027
InterRepository.register_optimiser(InterSameDataRepository)
1664
4028
InterRepository.register_optimiser(InterWeaveRepo)
1665
4029
InterRepository.register_optimiser(InterKnitRepo)
1668
class RepositoryTestProviderAdapter(object):
1669
"""A tool to generate a suite testing multiple repository formats at once.
1671
This is done by copying the test once for each transport and injecting
1672
the transport_server, transport_readonly_server, and bzrdir_format and
1673
repository_format classes into each copy. Each copy is also given a new id()
1674
to make it easy to identify.
1677
def __init__(self, transport_server, transport_readonly_server, formats):
1678
self._transport_server = transport_server
1679
self._transport_readonly_server = transport_readonly_server
1680
self._formats = formats
1682
def adapt(self, test):
1683
result = TestSuite()
1684
for repository_format, bzrdir_format in self._formats:
1685
new_test = deepcopy(test)
1686
new_test.transport_server = self._transport_server
1687
new_test.transport_readonly_server = self._transport_readonly_server
1688
new_test.bzrdir_format = bzrdir_format
1689
new_test.repository_format = repository_format
1690
def make_new_test_id():
1691
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
1692
return lambda: new_id
1693
new_test.id = make_new_test_id()
1694
result.addTest(new_test)
1698
class InterRepositoryTestProviderAdapter(object):
1699
"""A tool to generate a suite testing multiple inter repository formats.
1701
This is done by copying the test once for each interrepo provider and injecting
1702
the transport_server, transport_readonly_server, repository_format and
1703
repository_to_format classes into each copy.
1704
Each copy is also given a new id() to make it easy to identify.
1707
def __init__(self, transport_server, transport_readonly_server, formats):
1708
self._transport_server = transport_server
1709
self._transport_readonly_server = transport_readonly_server
1710
self._formats = formats
1712
def adapt(self, test):
1713
result = TestSuite()
1714
for interrepo_class, repository_format, repository_format_to in self._formats:
1715
new_test = deepcopy(test)
1716
new_test.transport_server = self._transport_server
1717
new_test.transport_readonly_server = self._transport_readonly_server
1718
new_test.interrepo_class = interrepo_class
1719
new_test.repository_format = repository_format
1720
new_test.repository_format_to = repository_format_to
1721
def make_new_test_id():
1722
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
1723
return lambda: new_id
1724
new_test.id = make_new_test_id()
1725
result.addTest(new_test)
1729
def default_test_list():
1730
"""Generate the default list of interrepo permutations to test."""
1732
# test the default InterRepository between format 6 and the current
1734
# XXX: robertc 20060220 reinstate this when there are two supported
1735
# formats which do not have an optimal code path between them.
1736
result.append((InterRepository,
1737
RepositoryFormat6(),
1738
RepositoryFormatKnit1()))
1739
for optimiser in InterRepository._optimisers:
1740
result.append((optimiser,
1741
optimiser._matching_repo_format,
1742
optimiser._matching_repo_format
1744
# if there are specific combinations we want to use, we can add them
1749
4032
class CopyConverter(object):
1750
4033
"""A repository conversion tool which just performs a copy of the content.
1752
4035
This is slow but quite reliable.
1758
4041
:param target_format: The format the resulting repository should be.
1760
4043
self.target_format = target_format
1762
4045
def convert(self, repo, pb):
1763
4046
"""Perform the conversion of to_convert, giving feedback via pb.
1765
4048
:param to_convert: The disk object to convert.
1766
4049
:param pb: a progress bar to use for progress information.
4051
pb = ui.ui_factory.nested_progress_bar()
1771
4054
# this is only useful with metadir layouts - separated repo content.
1772
4055
# trigger an assertion if not such
1773
4056
repo._format.get_format_string()
1774
4057
self.repo_dir = repo.bzrdir
1775
self.step('Moving repository to repository.backup')
4058
pb.update('Moving repository to repository.backup')
1776
4059
self.repo_dir.transport.move('repository', 'repository.backup')
1777
4060
backup_transport = self.repo_dir.transport.clone('repository.backup')
4061
repo._format.check_conversion_target(self.target_format)
1778
4062
self.source_repo = repo._format.open(self.repo_dir,
1780
4064
_override_transport=backup_transport)
1781
self.step('Creating new repository')
4065
pb.update('Creating new repository')
1782
4066
converted = self.target_format.initialize(self.repo_dir,
1783
4067
self.source_repo.is_shared())
1784
4068
converted.lock_write()
1786
self.step('Copying content into repository.')
4070
pb.update('Copying content')
1787
4071
self.source_repo.copy_content_into(converted)
1789
4073
converted.unlock()
1790
self.step('Deleting old repository content.')
4074
pb.update('Deleting old repository content')
1791
4075
self.repo_dir.transport.delete_tree('repository.backup')
1792
self.pb.note('repository converted')
1794
def step(self, message):
1795
"""Update the pb by a step."""
1797
self.pb.update(message, self.count, self.total)
1800
# Copied from xml.sax.saxutils
4076
ui.ui_factory.note('repository converted')
4089
def _unescaper(match, _map=_unescape_map):
4090
code = match.group(1)
4094
if not code.startswith('#'):
4096
return unichr(int(code[1:])).encode('utf8')
1801
4102
def _unescape_xml(data):
1802
"""Unescape &, <, and > in a string of data.
1804
data = data.replace("<", "<")
1805
data = data.replace(">", ">")
1806
# must do ampersand last
1807
return data.replace("&", "&")
4103
"""Unescape predefined XML entities in a string of data."""
4105
if _unescape_re is None:
4106
_unescape_re = re.compile('\&([^;]*);')
4107
return _unescape_re.sub(_unescaper, data)
4110
class _VersionedFileChecker(object):
4112
def __init__(self, repository, text_key_references=None, ancestors=None):
4113
self.repository = repository
4114
self.text_index = self.repository._generate_text_key_index(
4115
text_key_references=text_key_references, ancestors=ancestors)
4117
def calculate_file_version_parents(self, text_key):
4118
"""Calculate the correct parents for a file version according to
4121
parent_keys = self.text_index[text_key]
4122
if parent_keys == [_mod_revision.NULL_REVISION]:
4124
return tuple(parent_keys)
4126
def check_file_version_parents(self, texts, progress_bar=None):
4127
"""Check the parents stored in a versioned file are correct.
4129
It also detects file versions that are not referenced by their
4130
corresponding revision's inventory.
4132
:returns: A tuple of (wrong_parents, dangling_file_versions).
4133
wrong_parents is a dict mapping {revision_id: (stored_parents,
4134
correct_parents)} for each revision_id where the stored parents
4135
are not correct. dangling_file_versions is a set of (file_id,
4136
revision_id) tuples for versions that are present in this versioned
4137
file, but not used by the corresponding inventory.
4139
local_progress = None
4140
if progress_bar is None:
4141
local_progress = ui.ui_factory.nested_progress_bar()
4142
progress_bar = local_progress
4144
return self._check_file_version_parents(texts, progress_bar)
4147
local_progress.finished()
4149
def _check_file_version_parents(self, texts, progress_bar):
4150
"""See check_file_version_parents."""
4152
self.file_ids = set([file_id for file_id, _ in
4153
self.text_index.iterkeys()])
4154
# text keys is now grouped by file_id
4155
n_versions = len(self.text_index)
4156
progress_bar.update('loading text store', 0, n_versions)
4157
parent_map = self.repository.texts.get_parent_map(self.text_index)
4158
# On unlistable transports this could well be empty/error...
4159
text_keys = self.repository.texts.keys()
4160
unused_keys = frozenset(text_keys) - set(self.text_index)
4161
for num, key in enumerate(self.text_index.iterkeys()):
4162
progress_bar.update('checking text graph', num, n_versions)
4163
correct_parents = self.calculate_file_version_parents(key)
4165
knit_parents = parent_map[key]
4166
except errors.RevisionNotPresent:
4169
if correct_parents != knit_parents:
4170
wrong_parents[key] = (knit_parents, correct_parents)
4171
return wrong_parents, unused_keys
4174
def _old_get_graph(repository, revision_id):
4175
"""DO NOT USE. That is all. I'm serious."""
4176
graph = repository.get_graph()
4177
revision_graph = dict(((key, value) for key, value in
4178
graph.iter_ancestry([revision_id]) if value is not None))
4179
return _strip_NULL_ghosts(revision_graph)
4182
def _strip_NULL_ghosts(revision_graph):
4183
"""Also don't use this. more compatibility code for unmigrated clients."""
4184
# Filter ghosts, and null:
4185
if _mod_revision.NULL_REVISION in revision_graph:
4186
del revision_graph[_mod_revision.NULL_REVISION]
4187
for key, parents in revision_graph.items():
4188
revision_graph[key] = tuple(parent for parent in parents if parent
4190
return revision_graph
4193
class StreamSink(object):
4194
"""An object that can insert a stream into a repository.
4196
This interface handles the complexity of reserialising inventories and
4197
revisions from different formats, and allows unidirectional insertion into
4198
stacked repositories without looking for the missing basis parents
4202
def __init__(self, target_repo):
4203
self.target_repo = target_repo
4205
def insert_stream(self, stream, src_format, resume_tokens):
4206
"""Insert a stream's content into the target repository.
4208
:param src_format: a bzr repository format.
4210
:return: a list of resume tokens and an iterable of keys additional
4211
items required before the insertion can be completed.
4213
self.target_repo.lock_write()
4216
self.target_repo.resume_write_group(resume_tokens)
4219
self.target_repo.start_write_group()
4222
# locked_insert_stream performs a commit|suspend.
4223
return self._locked_insert_stream(stream, src_format, is_resume)
4225
self.target_repo.abort_write_group(suppress_errors=True)
4228
self.target_repo.unlock()
4230
def _locked_insert_stream(self, stream, src_format, is_resume):
4231
to_serializer = self.target_repo._format._serializer
4232
src_serializer = src_format._serializer
4234
if to_serializer == src_serializer:
4235
# If serializers match and the target is a pack repository, set the
4236
# write cache size on the new pack. This avoids poor performance
4237
# on transports where append is unbuffered (such as
4238
# RemoteTransport). This is safe to do because nothing should read
4239
# back from the target repository while a stream with matching
4240
# serialization is being inserted.
4241
# The exception is that a delta record from the source that should
4242
# be a fulltext may need to be expanded by the target (see
4243
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4244
# explicitly flush any buffered writes first in that rare case.
4246
new_pack = self.target_repo._pack_collection._new_pack
4247
except AttributeError:
4248
# Not a pack repository
4251
new_pack.set_write_cache_size(1024*1024)
4252
for substream_type, substream in stream:
4253
if 'stream' in debug.debug_flags:
4254
mutter('inserting substream: %s', substream_type)
4255
if substream_type == 'texts':
4256
self.target_repo.texts.insert_record_stream(substream)
4257
elif substream_type == 'inventories':
4258
if src_serializer == to_serializer:
4259
self.target_repo.inventories.insert_record_stream(
4262
self._extract_and_insert_inventories(
4263
substream, src_serializer)
4264
elif substream_type == 'inventory-deltas':
4265
self._extract_and_insert_inventory_deltas(
4266
substream, src_serializer)
4267
elif substream_type == 'chk_bytes':
4268
# XXX: This doesn't support conversions, as it assumes the
4269
# conversion was done in the fetch code.
4270
self.target_repo.chk_bytes.insert_record_stream(substream)
4271
elif substream_type == 'revisions':
4272
# This may fallback to extract-and-insert more often than
4273
# required if the serializers are different only in terms of
4275
if src_serializer == to_serializer:
4276
self.target_repo.revisions.insert_record_stream(
4279
self._extract_and_insert_revisions(substream,
4281
elif substream_type == 'signatures':
4282
self.target_repo.signatures.insert_record_stream(substream)
4284
raise AssertionError('kaboom! %s' % (substream_type,))
4285
# Done inserting data, and the missing_keys calculations will try to
4286
# read back from the inserted data, so flush the writes to the new pack
4287
# (if this is pack format).
4288
if new_pack is not None:
4289
new_pack._write_data('', flush=True)
4290
# Find all the new revisions (including ones from resume_tokens)
4291
missing_keys = self.target_repo.get_missing_parent_inventories(
4292
check_for_missing_texts=is_resume)
4294
for prefix, versioned_file in (
4295
('texts', self.target_repo.texts),
4296
('inventories', self.target_repo.inventories),
4297
('revisions', self.target_repo.revisions),
4298
('signatures', self.target_repo.signatures),
4299
('chk_bytes', self.target_repo.chk_bytes),
4301
if versioned_file is None:
4303
# TODO: key is often going to be a StaticTuple object
4304
# I don't believe we can define a method by which
4305
# (prefix,) + StaticTuple will work, though we could
4306
# define a StaticTuple.sq_concat that would allow you to
4307
# pass in either a tuple or a StaticTuple as the second
4308
# object, so instead we could have:
4309
# StaticTuple(prefix) + key here...
4310
missing_keys.update((prefix,) + key for key in
4311
versioned_file.get_missing_compression_parent_keys())
4312
except NotImplementedError:
4313
# cannot even attempt suspending, and missing would have failed
4314
# during stream insertion.
4315
missing_keys = set()
4318
# suspend the write group and tell the caller what we is
4319
# missing. We know we can suspend or else we would not have
4320
# entered this code path. (All repositories that can handle
4321
# missing keys can handle suspending a write group).
4322
write_group_tokens = self.target_repo.suspend_write_group()
4323
return write_group_tokens, missing_keys
4324
hint = self.target_repo.commit_write_group()
4325
if (to_serializer != src_serializer and
4326
self.target_repo._format.pack_compresses):
4327
self.target_repo.pack(hint=hint)
4330
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4331
target_rich_root = self.target_repo._format.rich_root_data
4332
target_tree_refs = self.target_repo._format.supports_tree_reference
4333
for record in substream:
4334
# Insert the delta directly
4335
inventory_delta_bytes = record.get_bytes_as('fulltext')
4336
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4338
parse_result = deserialiser.parse_text_bytes(
4339
inventory_delta_bytes)
4340
except inventory_delta.IncompatibleInventoryDelta, err:
4341
trace.mutter("Incompatible delta: %s", err.msg)
4342
raise errors.IncompatibleRevision(self.target_repo._format)
4343
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4344
revision_id = new_id
4345
parents = [key[0] for key in record.parents]
4346
self.target_repo.add_inventory_by_delta(
4347
basis_id, inv_delta, revision_id, parents)
4349
def _extract_and_insert_inventories(self, substream, serializer,
4351
"""Generate a new inventory versionedfile in target, converting data.
4353
The inventory is retrieved from the source, (deserializing it), and
4354
stored in the target (reserializing it in a different format).
4356
target_rich_root = self.target_repo._format.rich_root_data
4357
target_tree_refs = self.target_repo._format.supports_tree_reference
4358
for record in substream:
4359
# It's not a delta, so it must be a fulltext in the source
4360
# serializer's format.
4361
bytes = record.get_bytes_as('fulltext')
4362
revision_id = record.key[0]
4363
inv = serializer.read_inventory_from_string(bytes, revision_id)
4364
parents = [key[0] for key in record.parents]
4365
self.target_repo.add_inventory(revision_id, inv, parents)
4366
# No need to keep holding this full inv in memory when the rest of
4367
# the substream is likely to be all deltas.
4370
def _extract_and_insert_revisions(self, substream, serializer):
4371
for record in substream:
4372
bytes = record.get_bytes_as('fulltext')
4373
revision_id = record.key[0]
4374
rev = serializer.read_revision_from_string(bytes)
4375
if rev.revision_id != revision_id:
4376
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4377
self.target_repo.add_revision(revision_id, rev)
4380
if self.target_repo._format._fetch_reconcile:
4381
self.target_repo.reconcile()
4384
class StreamSource(object):
4385
"""A source of a stream for fetching between repositories."""
4387
def __init__(self, from_repository, to_format):
4388
"""Create a StreamSource streaming from from_repository."""
4389
self.from_repository = from_repository
4390
self.to_format = to_format
4392
def delta_on_metadata(self):
4393
"""Return True if delta's are permitted on metadata streams.
4395
That is on revisions and signatures.
4397
src_serializer = self.from_repository._format._serializer
4398
target_serializer = self.to_format._serializer
4399
return (self.to_format._fetch_uses_deltas and
4400
src_serializer == target_serializer)
4402
def _fetch_revision_texts(self, revs):
4403
# fetch signatures first and then the revision texts
4404
# may need to be a InterRevisionStore call here.
4405
from_sf = self.from_repository.signatures
4406
# A missing signature is just skipped.
4407
keys = [(rev_id,) for rev_id in revs]
4408
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4410
self.to_format._fetch_order,
4411
not self.to_format._fetch_uses_deltas))
4412
# If a revision has a delta, this is actually expanded inside the
4413
# insert_record_stream code now, which is an alternate fix for
4415
from_rf = self.from_repository.revisions
4416
revisions = from_rf.get_record_stream(
4418
self.to_format._fetch_order,
4419
not self.delta_on_metadata())
4420
return [('signatures', signatures), ('revisions', revisions)]
4422
def _generate_root_texts(self, revs):
4423
"""This will be called by get_stream between fetching weave texts and
4424
fetching the inventory weave.
4426
if self._rich_root_upgrade():
4427
return _mod_fetch.Inter1and2Helper(
4428
self.from_repository).generate_root_texts(revs)
4432
def get_stream(self, search):
4434
revs = search.get_keys()
4435
graph = self.from_repository.get_graph()
4436
revs = tsort.topo_sort(graph.get_parent_map(revs))
4437
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4439
for knit_kind, file_id, revisions in data_to_fetch:
4440
if knit_kind != phase:
4442
# Make a new progress bar for this phase
4443
if knit_kind == "file":
4444
# Accumulate file texts
4445
text_keys.extend([(file_id, revision) for revision in
4447
elif knit_kind == "inventory":
4448
# Now copy the file texts.
4449
from_texts = self.from_repository.texts
4450
yield ('texts', from_texts.get_record_stream(
4451
text_keys, self.to_format._fetch_order,
4452
not self.to_format._fetch_uses_deltas))
4453
# Cause an error if a text occurs after we have done the
4456
# Before we process the inventory we generate the root
4457
# texts (if necessary) so that the inventories references
4459
for _ in self._generate_root_texts(revs):
4461
# we fetch only the referenced inventories because we do not
4462
# know for unselected inventories whether all their required
4463
# texts are present in the other repository - it could be
4465
for info in self._get_inventory_stream(revs):
4467
elif knit_kind == "signatures":
4468
# Nothing to do here; this will be taken care of when
4469
# _fetch_revision_texts happens.
4471
elif knit_kind == "revisions":
4472
for record in self._fetch_revision_texts(revs):
4475
raise AssertionError("Unknown knit kind %r" % knit_kind)
4477
def get_stream_for_missing_keys(self, missing_keys):
4478
# missing keys can only occur when we are byte copying and not
4479
# translating (because translation means we don't send
4480
# unreconstructable deltas ever).
4482
keys['texts'] = set()
4483
keys['revisions'] = set()
4484
keys['inventories'] = set()
4485
keys['chk_bytes'] = set()
4486
keys['signatures'] = set()
4487
for key in missing_keys:
4488
keys[key[0]].add(key[1:])
4489
if len(keys['revisions']):
4490
# If we allowed copying revisions at this point, we could end up
4491
# copying a revision without copying its required texts: a
4492
# violation of the requirements for repository integrity.
4493
raise AssertionError(
4494
'cannot copy revisions to fill in missing deltas %s' % (
4495
keys['revisions'],))
4496
for substream_kind, keys in keys.iteritems():
4497
vf = getattr(self.from_repository, substream_kind)
4498
if vf is None and keys:
4499
raise AssertionError(
4500
"cannot fill in keys for a versioned file we don't"
4501
" have: %s needs %s" % (substream_kind, keys))
4503
# No need to stream something we don't have
4505
if substream_kind == 'inventories':
4506
# Some missing keys are genuinely ghosts, filter those out.
4507
present = self.from_repository.inventories.get_parent_map(keys)
4508
revs = [key[0] for key in present]
4509
# Get the inventory stream more-or-less as we do for the
4510
# original stream; there's no reason to assume that records
4511
# direct from the source will be suitable for the sink. (Think
4512
# e.g. 2a -> 1.9-rich-root).
4513
for info in self._get_inventory_stream(revs, missing=True):
4517
# Ask for full texts always so that we don't need more round trips
4518
# after this stream.
4519
# Some of the missing keys are genuinely ghosts, so filter absent
4520
# records. The Sink is responsible for doing another check to
4521
# ensure that ghosts don't introduce missing data for future
4523
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4524
self.to_format._fetch_order, True))
4525
yield substream_kind, stream
4527
def inventory_fetch_order(self):
4528
if self._rich_root_upgrade():
4529
return 'topological'
4531
return self.to_format._fetch_order
4533
def _rich_root_upgrade(self):
4534
return (not self.from_repository._format.rich_root_data and
4535
self.to_format.rich_root_data)
4537
def _get_inventory_stream(self, revision_ids, missing=False):
4538
from_format = self.from_repository._format
4539
if (from_format.supports_chks and self.to_format.supports_chks and
4540
from_format.network_name() == self.to_format.network_name()):
4541
raise AssertionError(
4542
"this case should be handled by GroupCHKStreamSource")
4543
elif 'forceinvdeltas' in debug.debug_flags:
4544
return self._get_convertable_inventory_stream(revision_ids,
4545
delta_versus_null=missing)
4546
elif from_format.network_name() == self.to_format.network_name():
4548
return self._get_simple_inventory_stream(revision_ids,
4550
elif (not from_format.supports_chks and not self.to_format.supports_chks
4551
and from_format._serializer == self.to_format._serializer):
4552
# Essentially the same format.
4553
return self._get_simple_inventory_stream(revision_ids,
4556
# Any time we switch serializations, we want to use an
4557
# inventory-delta based approach.
4558
return self._get_convertable_inventory_stream(revision_ids,
4559
delta_versus_null=missing)
4561
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4562
# NB: This currently reopens the inventory weave in source;
4563
# using a single stream interface instead would avoid this.
4564
from_weave = self.from_repository.inventories
4566
delta_closure = True
4568
delta_closure = not self.delta_on_metadata()
4569
yield ('inventories', from_weave.get_record_stream(
4570
[(rev_id,) for rev_id in revision_ids],
4571
self.inventory_fetch_order(), delta_closure))
4573
def _get_convertable_inventory_stream(self, revision_ids,
4574
delta_versus_null=False):
4575
# The two formats are sufficiently different that there is no fast
4576
# path, so we need to send just inventorydeltas, which any
4577
# sufficiently modern client can insert into any repository.
4578
# The StreamSink code expects to be able to
4579
# convert on the target, so we need to put bytes-on-the-wire that can
4580
# be converted. That means inventory deltas (if the remote is <1.19,
4581
# RemoteStreamSink will fallback to VFS to insert the deltas).
4582
yield ('inventory-deltas',
4583
self._stream_invs_as_deltas(revision_ids,
4584
delta_versus_null=delta_versus_null))
4586
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4587
"""Return a stream of inventory-deltas for the given rev ids.
4589
:param revision_ids: The list of inventories to transmit
4590
:param delta_versus_null: Don't try to find a minimal delta for this
4591
entry, instead compute the delta versus the NULL_REVISION. This
4592
effectively streams a complete inventory. Used for stuff like
4593
filling in missing parents, etc.
4595
from_repo = self.from_repository
4596
revision_keys = [(rev_id,) for rev_id in revision_ids]
4597
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4598
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4600
inventories = self.from_repository.iter_inventories(
4601
revision_ids, 'topological')
4602
format = from_repo._format
4603
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4604
inventory_cache = lru_cache.LRUCache(50)
4605
null_inventory = from_repo.revision_tree(
4606
_mod_revision.NULL_REVISION).inventory
4607
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4608
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4609
# repo back into a non-rich-root repo ought to be allowed)
4610
serializer = inventory_delta.InventoryDeltaSerializer(
4611
versioned_root=format.rich_root_data,
4612
tree_references=format.supports_tree_reference)
4613
for inv in inventories:
4614
key = (inv.revision_id,)
4615
parent_keys = parent_map.get(key, ())
4617
if not delta_versus_null and parent_keys:
4618
# The caller did not ask for complete inventories and we have
4619
# some parents that we can delta against. Make a delta against
4620
# each parent so that we can find the smallest.
4621
parent_ids = [parent_key[0] for parent_key in parent_keys]
4622
for parent_id in parent_ids:
4623
if parent_id not in invs_sent_so_far:
4624
# We don't know that the remote side has this basis, so
4627
if parent_id == _mod_revision.NULL_REVISION:
4628
parent_inv = null_inventory
4630
parent_inv = inventory_cache.get(parent_id, None)
4631
if parent_inv is None:
4632
parent_inv = from_repo.get_inventory(parent_id)
4633
candidate_delta = inv._make_delta(parent_inv)
4634
if (delta is None or
4635
len(delta) > len(candidate_delta)):
4636
delta = candidate_delta
4637
basis_id = parent_id
4639
# Either none of the parents ended up being suitable, or we
4640
# were asked to delta against NULL
4641
basis_id = _mod_revision.NULL_REVISION
4642
delta = inv._make_delta(null_inventory)
4643
invs_sent_so_far.add(inv.revision_id)
4644
inventory_cache[inv.revision_id] = inv
4645
delta_serialized = ''.join(
4646
serializer.delta_to_lines(basis_id, key[-1], delta))
4647
yield versionedfile.FulltextContentFactory(
4648
key, parent_keys, None, delta_serialized)
4651
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4652
stop_revision=None):
4653
"""Extend the partial history to include a given index
4655
If a stop_index is supplied, stop when that index has been reached.
4656
If a stop_revision is supplied, stop when that revision is
4657
encountered. Otherwise, stop when the beginning of history is
4660
:param stop_index: The index which should be present. When it is
4661
present, history extension will stop.
4662
:param stop_revision: The revision id which should be present. When
4663
it is encountered, history extension will stop.
4665
start_revision = partial_history_cache[-1]
4666
iterator = repo.iter_reverse_revision_history(start_revision)
4668
#skip the last revision in the list
4671
if (stop_index is not None and
4672
len(partial_history_cache) > stop_index):
4674
if partial_history_cache[-1] == stop_revision:
4676
revision_id = iterator.next()
4677
partial_history_cache.append(revision_id)
4678
except StopIteration: