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# Copyright (C) 2005-2010 Canonical Ltd
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# Copyright (C) 2005, 2006 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from binascii import hexlify
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from copy import deepcopy
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from cStringIO import StringIO
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from unittest import TestSuite
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revision as _mod_revision,
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from bzrlib.bundle import serializer
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from bzrlib.revisiontree import RevisionTree
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from bzrlib.store.versioned import VersionedFileStore
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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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from bzrlib.inter import InterObject
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from bzrlib.inventory import Inventory
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from bzrlib.knit import KnitVersionedFile, KnitPlainFactory
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.lockdir import LockDir
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from bzrlib.osutils import (safe_unicode, rand_bytes, compact_date,
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from bzrlib.revision import NULL_REVISION, Revision
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from bzrlib.store.versioned import VersionedFileStore, WeaveStore
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from bzrlib.store.text import TextStore
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from bzrlib.symbol_versioning import *
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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.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.inter import InterObject
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from bzrlib.inventory import (
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.trace import (
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log_exception_quietly, note, mutter, mutter_callsite, warning)
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# Old formats display a warning, but only once
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_deprecation_warning_done = False
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class CommitBuilder(object):
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"""Provides an interface to build up a commit.
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This allows describing a tree to be committed without needing to
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know the internals of the format of the repository.
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# all clients should supply tree roots.
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record_root_entry = True
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# the default CommitBuilder does not manage trees whose root is versioned.
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_versioned_root = False
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def __init__(self, repository, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Initiate a CommitBuilder.
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:param repository: Repository to commit to.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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self._config = config
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if committer is None:
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self._committer = self._config.username()
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self._committer = committer
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self.new_inventory = Inventory(None)
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self._new_revision_id = revision_id
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self.parents = parents
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self.repository = repository
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if revprops is not None:
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self._validate_revprops(revprops)
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self._revprops.update(revprops)
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if timestamp is None:
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timestamp = time.time()
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# Restrict resolution to 1ms
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self._timestamp = round(timestamp, 3)
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self._timezone = osutils.local_time_offset()
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self._timezone = int(timezone)
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self._generate_revision_if_needed()
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self.__heads = graph.HeadsCache(repository.get_graph()).heads
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self._basis_delta = []
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# API compatibility, older code that used CommitBuilder did not call
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# .record_delete(), which means the delta that is computed would not be
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# valid. Callers that will call record_delete() should call
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# .will_record_deletes() to indicate that.
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self._recording_deletes = False
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# memo'd check for no-op commits.
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self._any_changes = False
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def any_changes(self):
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"""Return True if any entries were changed.
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This includes merge-only changes. It is the core for the --unchanged
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:return: True if any changes have occured.
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return self._any_changes
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def _validate_unicode_text(self, text, context):
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"""Verify things like commit messages don't have bogus characters."""
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raise ValueError('Invalid value for %s: %r' % (context, text))
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def _validate_revprops(self, revprops):
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for key, value in revprops.iteritems():
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# We know that the XML serializers do not round trip '\r'
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# correctly, so refuse to accept them
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if not isinstance(value, basestring):
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raise ValueError('revision property (%s) is not a valid'
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' (unicode) string: %r' % (key, value))
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self._validate_unicode_text(value,
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'revision property (%s)' % (key,))
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def commit(self, message):
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"""Make the actual commit.
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:return: The revision id of the recorded revision.
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self._validate_unicode_text(message, 'commit message')
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rev = _mod_revision.Revision(
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timestamp=self._timestamp,
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timezone=self._timezone,
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committer=self._committer,
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inventory_sha1=self.inv_sha1,
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revision_id=self._new_revision_id,
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properties=self._revprops)
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rev.parent_ids = self.parents
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self.repository.add_revision(self._new_revision_id, rev,
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self.new_inventory, self._config)
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self.repository.commit_write_group()
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return self._new_revision_id
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"""Abort the commit that is being built.
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self.repository.abort_write_group()
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def revision_tree(self):
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"""Return the tree that was just committed.
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After calling commit() this can be called to get a RevisionTree
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representing the newly committed tree. This is preferred to
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calling Repository.revision_tree() because that may require
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deserializing the inventory, while we already have a copy in
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if self.new_inventory is None:
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self.new_inventory = self.repository.get_inventory(
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self._new_revision_id)
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return RevisionTree(self.repository, self.new_inventory,
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self._new_revision_id)
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def finish_inventory(self):
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"""Tell the builder that the inventory is finished.
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:return: The inventory id in the repository, which can be used with
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repository.get_inventory.
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if self.new_inventory is None:
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# an inventory delta was accumulated without creating a new
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basis_id = self.basis_delta_revision
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# We ignore the 'inventory' returned by add_inventory_by_delta
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# because self.new_inventory is used to hint to the rest of the
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# system what code path was taken
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self.inv_sha1, _ = self.repository.add_inventory_by_delta(
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basis_id, self._basis_delta, self._new_revision_id,
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if self.new_inventory.root is None:
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raise AssertionError('Root entry should be supplied to'
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' record_entry_contents, as of bzr 0.10.')
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self.new_inventory.add(InventoryDirectory(ROOT_ID, '', None))
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self.new_inventory.revision_id = self._new_revision_id
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self.inv_sha1 = self.repository.add_inventory(
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self._new_revision_id,
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return self._new_revision_id
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def _gen_revision_id(self):
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"""Return new revision-id."""
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return generate_ids.gen_revision_id(self._config.username(),
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def _generate_revision_if_needed(self):
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"""Create a revision id if None was supplied.
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If the repository can not support user-specified revision ids
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they should override this function and raise CannotSetRevisionId
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if _new_revision_id is not None.
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:raises: CannotSetRevisionId
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if self._new_revision_id is None:
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self._new_revision_id = self._gen_revision_id()
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self.random_revid = True
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self.random_revid = False
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def _heads(self, file_id, revision_ids):
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"""Calculate the graph heads for revision_ids in the graph of file_id.
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This can use either a per-file graph or a global revision graph as we
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have an identity relationship between the two graphs.
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return self.__heads(revision_ids)
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def _check_root(self, ie, parent_invs, tree):
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"""Helper for record_entry_contents.
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:param ie: An entry being added.
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:param parent_invs: The inventories of the parent revisions of the
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:param tree: The tree that is being committed.
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# In this revision format, root entries have no knit or weave When
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# serializing out to disk and back in root.revision is always
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ie.revision = self._new_revision_id
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def _require_root_change(self, tree):
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"""Enforce an appropriate root object change.
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This is called once when record_iter_changes is called, if and only if
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the root was not in the delta calculated by record_iter_changes.
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:param tree: The tree which is being committed.
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# NB: if there are no parents then this method is not called, so no
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# need to guard on parents having length.
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entry = entry_factory['directory'](tree.path2id(''), '',
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entry.revision = self._new_revision_id
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self._basis_delta.append(('', '', entry.file_id, entry))
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def _get_delta(self, ie, basis_inv, path):
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"""Get a delta against the basis inventory for ie."""
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if ie.file_id not in basis_inv:
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result = (None, path, ie.file_id, ie)
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self._basis_delta.append(result)
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elif ie != basis_inv[ie.file_id]:
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# TODO: avoid tis id2path call.
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result = (basis_inv.id2path(ie.file_id), path, ie.file_id, ie)
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self._basis_delta.append(result)
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def get_basis_delta(self):
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"""Return the complete inventory delta versus the basis inventory.
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This has been built up with the calls to record_delete and
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record_entry_contents. The client must have already called
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will_record_deletes() to indicate that they will be generating a
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:return: An inventory delta, suitable for use with apply_delta, or
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Repository.add_inventory_by_delta, etc.
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if not self._recording_deletes:
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raise AssertionError("recording deletes not activated.")
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return self._basis_delta
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def record_delete(self, path, file_id):
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"""Record that a delete occured against a basis tree.
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This is an optional API - when used it adds items to the basis_delta
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being accumulated by the commit builder. It cannot be called unless the
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method will_record_deletes() has been called to inform the builder that
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a delta is being supplied.
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:param path: The path of the thing deleted.
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:param file_id: The file id that was deleted.
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if not self._recording_deletes:
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raise AssertionError("recording deletes not activated.")
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delta = (path, None, file_id, None)
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self._basis_delta.append(delta)
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self._any_changes = True
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def will_record_deletes(self):
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"""Tell the commit builder that deletes are being notified.
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This enables the accumulation of an inventory delta; for the resulting
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commit to be valid, deletes against the basis MUST be recorded via
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builder.record_delete().
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self._recording_deletes = True
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basis_id = self.parents[0]
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basis_id = _mod_revision.NULL_REVISION
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self.basis_delta_revision = basis_id
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def record_entry_contents(self, ie, parent_invs, path, tree,
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"""Record the content of ie from tree into the commit if needed.
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Side effect: sets ie.revision when unchanged
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:param ie: An inventory entry present in the commit.
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:param parent_invs: The inventories of the parent revisions of the
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:param path: The path the entry is at in the tree.
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:param tree: The tree which contains this entry and should be used to
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:param content_summary: Summary data from the tree about the paths
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content - stat, length, exec, sha/link target. This is only
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accessed when the entry has a revision of None - that is when it is
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a candidate to commit.
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:return: A tuple (change_delta, version_recorded, fs_hash).
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change_delta is an inventory_delta change for this entry against
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the basis tree of the commit, or None if no change occured against
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version_recorded is True if a new version of the entry has been
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recorded. For instance, committing a merge where a file was only
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changed on the other side will return (delta, False).
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fs_hash is either None, or the hash details for the path (currently
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a tuple of the contents sha1 and the statvalue returned by
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tree.get_file_with_stat()).
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if self.new_inventory.root is None:
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if ie.parent_id is not None:
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raise errors.RootMissing()
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self._check_root(ie, parent_invs, tree)
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if ie.revision is None:
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kind = content_summary[0]
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# ie is carried over from a prior commit
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# XXX: repository specific check for nested tree support goes here - if
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# the repo doesn't want nested trees we skip it ?
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if (kind == 'tree-reference' and
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not self.repository._format.supports_tree_reference):
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# mismatch between commit builder logic and repository:
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# this needs the entry creation pushed down into the builder.
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raise NotImplementedError('Missing repository subtree support.')
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self.new_inventory.add(ie)
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# TODO: slow, take it out of the inner loop.
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basis_inv = parent_invs[0]
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basis_inv = Inventory(root_id=None)
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# ie.revision is always None if the InventoryEntry is considered
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# for committing. We may record the previous parents revision if the
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# content is actually unchanged against a sole head.
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if ie.revision is not None:
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if not self._versioned_root and path == '':
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# repositories that do not version the root set the root's
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# revision to the new commit even when no change occurs (more
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# specifically, they do not record a revision on the root; and
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# the rev id is assigned to the root during deserialisation -
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# this masks when a change may have occurred against the basis.
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# To match this we always issue a delta, because the revision
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# of the root will always be changing.
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if ie.file_id in basis_inv:
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delta = (basis_inv.id2path(ie.file_id), path,
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delta = (None, path, ie.file_id, ie)
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self._basis_delta.append(delta)
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return delta, False, None
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# we don't need to commit this, because the caller already
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# determined that an existing revision of this file is
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# appropriate. If its not being considered for committing then
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# it and all its parents to the root must be unaltered so
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# no-change against the basis.
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if ie.revision == self._new_revision_id:
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raise AssertionError("Impossible situation, a skipped "
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"inventory entry (%r) claims to be modified in this "
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"commit (%r).", (ie, self._new_revision_id))
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return None, False, None
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# XXX: Friction: parent_candidates should return a list not a dict
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# so that we don't have to walk the inventories again.
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parent_candiate_entries = ie.parent_candidates(parent_invs)
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head_set = self._heads(ie.file_id, parent_candiate_entries.keys())
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for inv in parent_invs:
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if ie.file_id in inv:
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old_rev = inv[ie.file_id].revision
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if old_rev in head_set:
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heads.append(inv[ie.file_id].revision)
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head_set.remove(inv[ie.file_id].revision)
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# now we check to see if we need to write a new record to the
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# We write a new entry unless there is one head to the ancestors, and
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# the kind-derived content is unchanged.
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# Cheapest check first: no ancestors, or more the one head in the
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# ancestors, we write a new node.
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# There is a single head, look it up for comparison
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parent_entry = parent_candiate_entries[heads[0]]
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# if the non-content specific data has changed, we'll be writing a
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if (parent_entry.parent_id != ie.parent_id or
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parent_entry.name != ie.name):
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# now we need to do content specific checks:
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# if the kind changed the content obviously has
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if kind != parent_entry.kind:
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# Stat cache fingerprint feedback for the caller - None as we usually
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# don't generate one.
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if content_summary[2] is None:
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raise ValueError("Files must not have executable = None")
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# We can't trust a check of the file length because of content
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if (# if the exec bit has changed we have to store:
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parent_entry.executable != content_summary[2]):
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elif parent_entry.text_sha1 == content_summary[3]:
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# all meta and content is unchanged (using a hash cache
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# hit to check the sha)
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ie.revision = parent_entry.revision
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ie.text_size = parent_entry.text_size
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ie.text_sha1 = parent_entry.text_sha1
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ie.executable = parent_entry.executable
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return self._get_delta(ie, basis_inv, path), False, None
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# Either there is only a hash change(no hash cache entry,
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# or same size content change), or there is no change on
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# Provide the parent's hash to the store layer, so that the
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# content is unchanged we will not store a new node.
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nostore_sha = parent_entry.text_sha1
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# We want to record a new node regardless of the presence or
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# absence of a content change in the file.
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ie.executable = content_summary[2]
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file_obj, stat_value = tree.get_file_with_stat(ie.file_id, path)
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text = file_obj.read()
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ie.text_sha1, ie.text_size = self._add_text_to_weave(
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ie.file_id, text, heads, nostore_sha)
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# Let the caller know we generated a stat fingerprint.
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fingerprint = (ie.text_sha1, stat_value)
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except errors.ExistingContent:
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# Turns out that the file content was unchanged, and we were
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# only going to store a new node if it was changed. Carry over
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ie.revision = parent_entry.revision
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ie.text_size = parent_entry.text_size
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ie.text_sha1 = parent_entry.text_sha1
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ie.executable = parent_entry.executable
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return self._get_delta(ie, basis_inv, path), False, None
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elif kind == 'directory':
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# all data is meta here, nothing specific to directory, so
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ie.revision = parent_entry.revision
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return self._get_delta(ie, basis_inv, path), False, None
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self._add_text_to_weave(ie.file_id, '', heads, None)
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elif kind == 'symlink':
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current_link_target = content_summary[3]
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# symlink target is not generic metadata, check if it has
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if current_link_target != parent_entry.symlink_target:
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# unchanged, carry over.
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ie.revision = parent_entry.revision
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ie.symlink_target = parent_entry.symlink_target
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return self._get_delta(ie, basis_inv, path), False, None
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ie.symlink_target = current_link_target
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self._add_text_to_weave(ie.file_id, '', heads, None)
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elif kind == 'tree-reference':
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if content_summary[3] != parent_entry.reference_revision:
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# unchanged, carry over.
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ie.reference_revision = parent_entry.reference_revision
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ie.revision = parent_entry.revision
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return self._get_delta(ie, basis_inv, path), False, None
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ie.reference_revision = content_summary[3]
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if ie.reference_revision is None:
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raise AssertionError("invalid content_summary for nested tree: %r"
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% (content_summary,))
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self._add_text_to_weave(ie.file_id, '', heads, None)
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raise NotImplementedError('unknown kind')
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ie.revision = self._new_revision_id
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self._any_changes = True
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return self._get_delta(ie, basis_inv, path), True, fingerprint
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def record_iter_changes(self, tree, basis_revision_id, iter_changes,
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_entry_factory=entry_factory):
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"""Record a new tree via iter_changes.
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:param tree: The tree to obtain text contents from for changed objects.
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:param basis_revision_id: The revision id of the tree the iter_changes
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has been generated against. Currently assumed to be the same
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as self.parents[0] - if it is not, errors may occur.
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:param iter_changes: An iter_changes iterator with the changes to apply
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to basis_revision_id. The iterator must not include any items with
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a current kind of None - missing items must be either filtered out
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or errored-on beefore record_iter_changes sees the item.
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:param _entry_factory: Private method to bind entry_factory locally for
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:return: A generator of (file_id, relpath, fs_hash) tuples for use with
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# Create an inventory delta based on deltas between all the parents and
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# deltas between all the parent inventories. We use inventory delta's
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# between the inventory objects because iter_changes masks
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# last-changed-field only changes.
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# file_id -> change map, change is fileid, paths, changed, versioneds,
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# parents, names, kinds, executables
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# {file_id -> revision_id -> inventory entry, for entries in parent
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# trees that are not parents[0]
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revtrees = list(self.repository.revision_trees(self.parents))
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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,
667
basis_entry = basis_inv[file_id]
668
except errors.NoSuchId:
669
# a change from basis->some_parents but file_id isn't in basis
670
# so was new in the merge, which means it must have changed
671
# from basis -> current, and as it hasn't the add was reverted
672
# by the user. So we discard this change.
676
(basis_inv.id2path(file_id), tree.id2path(file_id)),
678
(basis_entry.parent_id, basis_entry.parent_id),
679
(basis_entry.name, basis_entry.name),
680
(basis_entry.kind, basis_entry.kind),
681
(basis_entry.executable, basis_entry.executable))
682
changes[file_id] = (change, merged_ids[file_id])
683
# changes contains tuples with the change and a set of inventory
684
# candidates for the file.
686
# old_path, new_path, file_id, new_inventory_entry
687
seen_root = False # Is the root in the basis delta?
688
inv_delta = self._basis_delta
689
modified_rev = self._new_revision_id
690
for change, head_candidates in changes.values():
691
if change[3][1]: # versioned in target.
692
# Several things may be happening here:
693
# We may have a fork in the per-file graph
694
# - record a change with the content from tree
695
# We may have a change against < all trees
696
# - carry over the tree that hasn't changed
697
# We may have a change against all trees
698
# - record the change with the content from tree
701
entry = _entry_factory[kind](file_id, change[5][1],
703
head_set = self._heads(change[0], set(head_candidates))
706
for head_candidate in head_candidates:
707
if head_candidate in head_set:
708
heads.append(head_candidate)
709
head_set.remove(head_candidate)
712
# Could be a carry-over situation:
713
parent_entry_revs = parent_entries.get(file_id, None)
714
if parent_entry_revs:
715
parent_entry = parent_entry_revs.get(heads[0], None)
718
if parent_entry is None:
719
# The parent iter_changes was called against is the one
720
# that is the per-file head, so any change is relevant
721
# iter_changes is valid.
722
carry_over_possible = False
724
# could be a carry over situation
725
# A change against the basis may just indicate a merge,
726
# we need to check the content against the source of the
727
# merge to determine if it was changed after the merge
729
if (parent_entry.kind != entry.kind or
730
parent_entry.parent_id != entry.parent_id or
731
parent_entry.name != entry.name):
732
# Metadata common to all entries has changed
733
# against per-file parent
734
carry_over_possible = False
736
carry_over_possible = True
737
# per-type checks for changes against the parent_entry
740
# Cannot be a carry-over situation
741
carry_over_possible = False
742
# Populate the entry in the delta
744
# XXX: There is still a small race here: If someone reverts the content of a file
745
# after iter_changes examines and decides it has changed,
746
# we will unconditionally record a new version even if some
747
# other process reverts it while commit is running (with
748
# the revert happening after iter_changes did it's
751
entry.executable = True
753
entry.executable = False
754
if (carry_over_possible and
755
parent_entry.executable == entry.executable):
756
# Check the file length, content hash after reading
758
nostore_sha = parent_entry.text_sha1
761
file_obj, stat_value = tree.get_file_with_stat(file_id, change[1][1])
763
text = file_obj.read()
767
entry.text_sha1, entry.text_size = self._add_text_to_weave(
768
file_id, text, heads, nostore_sha)
769
yield file_id, change[1][1], (entry.text_sha1, stat_value)
770
except errors.ExistingContent:
771
# No content change against a carry_over parent
772
# Perhaps this should also yield a fs hash update?
774
entry.text_size = parent_entry.text_size
775
entry.text_sha1 = parent_entry.text_sha1
776
elif kind == 'symlink':
778
entry.symlink_target = tree.get_symlink_target(file_id)
779
if (carry_over_possible and
780
parent_entry.symlink_target == entry.symlink_target):
783
self._add_text_to_weave(change[0], '', heads, None)
784
elif kind == 'directory':
785
if carry_over_possible:
788
# Nothing to set on the entry.
789
# XXX: split into the Root and nonRoot versions.
790
if change[1][1] != '' or self.repository.supports_rich_root():
791
self._add_text_to_weave(change[0], '', heads, None)
792
elif kind == 'tree-reference':
793
if not self.repository._format.supports_tree_reference:
794
# This isn't quite sane as an error, but we shouldn't
795
# ever see this code path in practice: tree's don't
796
# permit references when the repo doesn't support tree
798
raise errors.UnsupportedOperation(tree.add_reference,
800
reference_revision = tree.get_reference_revision(change[0])
801
entry.reference_revision = reference_revision
802
if (carry_over_possible and
803
parent_entry.reference_revision == reference_revision):
806
self._add_text_to_weave(change[0], '', heads, None)
808
raise AssertionError('unknown kind %r' % kind)
810
entry.revision = modified_rev
812
entry.revision = parent_entry.revision
815
new_path = change[1][1]
816
inv_delta.append((change[1][0], new_path, change[0], entry))
819
self.new_inventory = None
821
# This should perhaps be guarded by a check that the basis we
822
# commit against is the basis for the commit and if not do a delta
824
self._any_changes = True
826
# housekeeping root entry changes do not affect no-change commits.
827
self._require_root_change(tree)
828
self.basis_delta_revision = basis_revision_id
830
def _add_text_to_weave(self, file_id, new_text, parents, nostore_sha):
831
parent_keys = tuple([(file_id, parent) for parent in parents])
832
return self.repository.texts._add_text(
833
(file_id, self._new_revision_id), parent_keys, new_text,
834
nostore_sha=nostore_sha, random_id=self.random_revid)[0:2]
837
class RootCommitBuilder(CommitBuilder):
838
"""This commitbuilder actually records the root id"""
840
# the root entry gets versioned properly by this builder.
841
_versioned_root = True
843
def _check_root(self, ie, parent_invs, tree):
844
"""Helper for record_entry_contents.
846
:param ie: An entry being added.
847
:param parent_invs: The inventories of the parent revisions of the
849
:param tree: The tree that is being committed.
852
def _require_root_change(self, tree):
853
"""Enforce an appropriate root object change.
855
This is called once when record_iter_changes is called, if and only if
856
the root was not in the delta calculated by record_iter_changes.
858
:param tree: The tree which is being committed.
860
# versioned roots do not change unless the tree found a change.
863
######################################################################
867
class Repository(_RelockDebugMixin, bzrdir.ControlComponent):
45
from bzrlib.tree import EmptyTree
47
from bzrlib.weave import WeaveFile
51
class Repository(object):
868
52
"""Repository holding history for one or more branches.
870
54
The repository holds and retrieves historical information including
871
55
revisions and file history. It's normally accessed only by the Branch,
872
56
which views a particular line of development through that history.
874
The Repository builds on top of some byte storage facilies (the revisions,
875
signatures, inventories, texts and chk_bytes attributes) and a Transport,
876
which respectively provide byte storage and a means to access the (possibly
58
The Repository builds on top of Stores and a Transport, which respectively
59
describe the disk data format and the way of accessing the (possibly
879
The byte storage facilities are addressed via tuples, which we refer to
880
as 'keys' throughout the code base. Revision_keys, inventory_keys and
881
signature_keys are all 1-tuples: (revision_id,). text_keys are two-tuples:
882
(file_id, revision_id). chk_bytes uses CHK keys - a 1-tuple with a single
883
byte string made up of a hash identifier and a hash value.
884
We use this interface because it allows low friction with the underlying
885
code that implements disk indices, network encoding and other parts of
888
:ivar revisions: A bzrlib.versionedfile.VersionedFiles instance containing
889
the serialised revisions for the repository. This can be used to obtain
890
revision graph information or to access raw serialised revisions.
891
The result of trying to insert data into the repository via this store
892
is undefined: it should be considered read-only except for implementors
894
:ivar signatures: A bzrlib.versionedfile.VersionedFiles instance containing
895
the serialised signatures for the repository. This can be used to
896
obtain access to raw serialised signatures. The result of trying to
897
insert data into the repository via this store is undefined: it should
898
be considered read-only except for implementors of repositories.
899
:ivar inventories: A bzrlib.versionedfile.VersionedFiles instance containing
900
the serialised inventories for the repository. This can be used to
901
obtain unserialised inventories. The result of trying to insert data
902
into the repository via this store is undefined: it should be
903
considered read-only except for implementors of repositories.
904
:ivar texts: A bzrlib.versionedfile.VersionedFiles instance containing the
905
texts of files and directories for the repository. This can be used to
906
obtain file texts or file graphs. Note that Repository.iter_file_bytes
907
is usually a better interface for accessing file texts.
908
The result of trying to insert data into the repository via this store
909
is undefined: it should be considered read-only except for implementors
911
:ivar chk_bytes: A bzrlib.versionedfile.VersionedFiles instance containing
912
any data the repository chooses to store or have indexed by its hash.
913
The result of trying to insert data into the repository via this store
914
is undefined: it should be considered read-only except for implementors
916
:ivar _transport: Transport for file access to repository, typically
917
pointing to .bzr/repository.
920
# What class to use for a CommitBuilder. Often its simpler to change this
921
# in a Repository class subclass rather than to override
922
# get_commit_builder.
923
_commit_builder_class = CommitBuilder
924
# The search regex used by xml based repositories to determine what things
925
# where changed in a single commit.
926
_file_ids_altered_regex = lazy_regex.lazy_compile(
927
r'file_id="(?P<file_id>[^"]+)"'
928
r'.* revision="(?P<revision_id>[^"]+)"'
931
def abort_write_group(self, suppress_errors=False):
932
"""Commit the contents accrued within the current write group.
934
:param suppress_errors: if true, abort_write_group will catch and log
935
unexpected errors that happen during the abort, rather than
936
allowing them to propagate. Defaults to False.
938
:seealso: start_write_group.
940
if self._write_group is not self.get_transaction():
941
# has an unlock or relock occured ?
944
'(suppressed) mismatched lock context and write group. %r, %r',
945
self._write_group, self.get_transaction())
947
raise errors.BzrError(
948
'mismatched lock context and write group. %r, %r' %
949
(self._write_group, self.get_transaction()))
951
self._abort_write_group()
952
except Exception, exc:
953
self._write_group = None
954
if not suppress_errors:
956
mutter('abort_write_group failed')
957
log_exception_quietly()
958
note('bzr: ERROR (ignored): %s', exc)
959
self._write_group = None
961
def _abort_write_group(self):
962
"""Template method for per-repository write group cleanup.
964
This is called during abort before the write group is considered to be
965
finished and should cleanup any internal state accrued during the write
966
group. There is no requirement that data handed to the repository be
967
*not* made available - this is not a rollback - but neither should any
968
attempt be made to ensure that data added is fully commited. Abort is
969
invoked when an error has occured so futher disk or network operations
970
may not be possible or may error and if possible should not be
974
def add_fallback_repository(self, repository):
975
"""Add a repository to use for looking up data not held locally.
977
:param repository: A repository.
979
if not self._format.supports_external_lookups:
980
raise errors.UnstackableRepositoryFormat(self._format, self.base)
982
# This repository will call fallback.unlock() when we transition to
983
# the unlocked state, so we make sure to increment the lock count
984
repository.lock_read()
985
self._check_fallback_repository(repository)
986
self._fallback_repositories.append(repository)
987
self.texts.add_fallback_versioned_files(repository.texts)
988
self.inventories.add_fallback_versioned_files(repository.inventories)
989
self.revisions.add_fallback_versioned_files(repository.revisions)
990
self.signatures.add_fallback_versioned_files(repository.signatures)
991
if self.chk_bytes is not None:
992
self.chk_bytes.add_fallback_versioned_files(repository.chk_bytes)
994
def _check_fallback_repository(self, repository):
995
"""Check that this repository can fallback to repository safely.
997
Raise an error if not.
999
:param repository: A repository to fallback to.
1001
return InterRepository._assert_same_model(self, repository)
1003
def add_inventory(self, revision_id, inv, parents):
1004
"""Add the inventory inv to the repository as revision_id.
1006
:param parents: The revision ids of the parents that revision_id
64
def add_inventory(self, revid, inv, parents):
65
"""Add the inventory inv to the repository as revid.
67
:param parents: The revision ids of the parents that revid
1007
68
is known to have and are in the repository already.
1009
:returns: The validator(which is a sha1 digest, though what is sha'd is
1010
repository format specific) of the serialized inventory.
1012
if not self.is_in_write_group():
1013
raise AssertionError("%r not in write group" % (self,))
1014
_mod_revision.check_not_reserved_id(revision_id)
1015
if not (inv.revision_id is None or inv.revision_id == revision_id):
1016
raise AssertionError(
1017
"Mismatch between inventory revision"
1018
" id and insertion revid (%r, %r)"
1019
% (inv.revision_id, revision_id))
1020
if inv.root is None:
1021
raise AssertionError()
1022
return self._add_inventory_checked(revision_id, inv, parents)
1024
def _add_inventory_checked(self, revision_id, inv, parents):
1025
"""Add inv to the repository after checking the inputs.
1027
This function can be overridden to allow different inventory styles.
1029
:seealso: add_inventory, for the contract.
1031
inv_lines = self._serializer.write_inventory_to_lines(inv)
1032
return self._inventory_add_lines(revision_id, parents,
1033
inv_lines, check_content=False)
1035
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1036
parents, basis_inv=None, propagate_caches=False):
1037
"""Add a new inventory expressed as a delta against another revision.
1039
See the inventory developers documentation for the theory behind
1042
:param basis_revision_id: The inventory id the delta was created
1043
against. (This does not have to be a direct parent.)
1044
:param delta: The inventory delta (see Inventory.apply_delta for
1046
:param new_revision_id: The revision id that the inventory is being
1048
:param parents: The revision ids of the parents that revision_id is
1049
known to have and are in the repository already. These are supplied
1050
for repositories that depend on the inventory graph for revision
1051
graph access, as well as for those that pun ancestry with delta
1053
:param basis_inv: The basis inventory if it is already known,
1055
:param propagate_caches: If True, the caches for this inventory are
1056
copied to and updated for the result if possible.
1058
:returns: (validator, new_inv)
1059
The validator(which is a sha1 digest, though what is sha'd is
1060
repository format specific) of the serialized inventory, and the
1061
resulting inventory.
1063
if not self.is_in_write_group():
1064
raise AssertionError("%r not in write group" % (self,))
1065
_mod_revision.check_not_reserved_id(new_revision_id)
1066
basis_tree = self.revision_tree(basis_revision_id)
1067
basis_tree.lock_read()
1069
# Note that this mutates the inventory of basis_tree, which not all
1070
# inventory implementations may support: A better idiom would be to
1071
# return a new inventory, but as there is no revision tree cache in
1072
# repository this is safe for now - RBC 20081013
1073
if basis_inv is None:
1074
basis_inv = basis_tree.inventory
1075
basis_inv.apply_delta(delta)
1076
basis_inv.revision_id = new_revision_id
1077
return (self.add_inventory(new_revision_id, basis_inv, parents),
1082
def _inventory_add_lines(self, revision_id, parents, lines,
1083
check_content=True):
1084
"""Store lines in inv_vf and return the sha1 of the inventory."""
1085
parents = [(parent,) for parent in parents]
1086
result = self.inventories.add_lines((revision_id,), parents, lines,
1087
check_content=check_content)[0]
1088
self.inventories._access.flush()
1091
def add_revision(self, revision_id, rev, inv=None, config=None):
1092
"""Add rev to the revision store as revision_id.
1094
:param revision_id: the revision id to use.
70
returns the sha1 of the serialized inventory.
72
assert inv.revision_id is None or inv.revision_id == revid, \
73
"Mismatch between inventory revision" \
74
" id and insertion revid (%r, %r)" % (inv.revision_id, revid)
75
inv_text = bzrlib.xml5.serializer_v5.write_inventory_to_string(inv)
76
inv_sha1 = bzrlib.osutils.sha_string(inv_text)
77
inv_vf = self.control_weaves.get_weave('inventory',
78
self.get_transaction())
79
self._inventory_add_lines(inv_vf, revid, parents, bzrlib.osutils.split_lines(inv_text))
82
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
84
for parent in parents:
86
final_parents.append(parent)
88
inv_vf.add_lines(revid, final_parents, lines)
91
def add_revision(self, rev_id, rev, inv=None, config=None):
92
"""Add rev to the revision store as rev_id.
94
:param rev_id: the revision id to use.
1095
95
:param rev: The revision object.
1096
96
:param inv: The inventory for the revision. if None, it will be looked
1097
97
up in the inventory storer
1163
157
Returns a set of the present revisions.
1166
graph = self.get_graph()
1167
parent_map = graph.get_parent_map(revision_ids)
1168
# The old API returned a list, should this actually be a set?
1169
return parent_map.keys()
1171
def _check_inventories(self, checker):
1172
"""Check the inventories found from the revision scan.
1174
This is responsible for verifying the sha1 of inventories and
1175
creating a pending_keys set that covers data referenced by inventories.
1177
bar = ui.ui_factory.nested_progress_bar()
1179
self._do_check_inventories(checker, bar)
1183
def _do_check_inventories(self, checker, bar):
1184
"""Helper for _check_inventories."""
1186
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1187
kinds = ['chk_bytes', 'texts']
1188
count = len(checker.pending_keys)
1189
bar.update("inventories", 0, 2)
1190
current_keys = checker.pending_keys
1191
checker.pending_keys = {}
1192
# Accumulate current checks.
1193
for key in current_keys:
1194
if key[0] != 'inventories' and key[0] not in kinds:
1195
checker._report_items.append('unknown key type %r' % (key,))
1196
keys[key[0]].add(key[1:])
1197
if keys['inventories']:
1198
# NB: output order *should* be roughly sorted - topo or
1199
# inverse topo depending on repository - either way decent
1200
# to just delta against. However, pre-CHK formats didn't
1201
# try to optimise inventory layout on disk. As such the
1202
# pre-CHK code path does not use inventory deltas.
1204
for record in self.inventories.check(keys=keys['inventories']):
1205
if record.storage_kind == 'absent':
1206
checker._report_items.append(
1207
'Missing inventory {%s}' % (record.key,))
1209
last_object = self._check_record('inventories', record,
1210
checker, last_object,
1211
current_keys[('inventories',) + record.key])
1212
del keys['inventories']
1215
bar.update("texts", 1)
1216
while (checker.pending_keys or keys['chk_bytes']
1218
# Something to check.
1219
current_keys = checker.pending_keys
1220
checker.pending_keys = {}
1221
# Accumulate current checks.
1222
for key in current_keys:
1223
if key[0] not in kinds:
1224
checker._report_items.append('unknown key type %r' % (key,))
1225
keys[key[0]].add(key[1:])
1226
# Check the outermost kind only - inventories || chk_bytes || texts
1230
for record in getattr(self, kind).check(keys=keys[kind]):
1231
if record.storage_kind == 'absent':
1232
checker._report_items.append(
1233
'Missing %s {%s}' % (kind, record.key,))
1235
last_object = self._check_record(kind, record,
1236
checker, last_object, current_keys[(kind,) + record.key])
1240
def _check_record(self, kind, record, checker, last_object, item_data):
1241
"""Check a single text from this repository."""
1242
if kind == 'inventories':
1243
rev_id = record.key[0]
1244
inv = self._deserialise_inventory(rev_id,
1245
record.get_bytes_as('fulltext'))
1246
if last_object is not None:
1247
delta = inv._make_delta(last_object)
1248
for old_path, path, file_id, ie in delta:
1251
ie.check(checker, rev_id, inv)
1253
for path, ie in inv.iter_entries():
1254
ie.check(checker, rev_id, inv)
1255
if self._format.fast_deltas:
1257
elif kind == 'chk_bytes':
1258
# No code written to check chk_bytes for this repo format.
1259
checker._report_items.append(
1260
'unsupported key type chk_bytes for %s' % (record.key,))
1261
elif kind == 'texts':
1262
self._check_text(record, checker, item_data)
1264
checker._report_items.append(
1265
'unknown key type %s for %s' % (kind, record.key))
1267
def _check_text(self, record, checker, item_data):
1268
"""Check a single text."""
1269
# Check it is extractable.
1270
# TODO: check length.
1271
if record.storage_kind == 'chunked':
1272
chunks = record.get_bytes_as(record.storage_kind)
1273
sha1 = osutils.sha_strings(chunks)
1274
length = sum(map(len, chunks))
1276
content = record.get_bytes_as('fulltext')
1277
sha1 = osutils.sha_string(content)
1278
length = len(content)
1279
if item_data and sha1 != item_data[1]:
1280
checker._report_items.append(
1281
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1282
(record.key, sha1, item_data[1], item_data[2]))
160
for id in revision_ids:
161
if self.has_revision(id):
1285
166
def create(a_bzrdir):
1286
167
"""Construct the current default format repository in a_bzrdir."""
1287
168
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
1289
def __init__(self, _format, a_bzrdir, control_files):
170
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1290
171
"""instantiate a Repository.
1292
173
:param _format: The format of the repository on disk.
1293
174
:param a_bzrdir: The BzrDir of the repository.
176
In the future we will have a single api for all stores for
177
getting file texts, inventories and revisions, then
178
this construct will accept instances of those things.
1295
# In the future we will have a single api for all stores for
1296
# getting file texts, inventories and revisions, then
1297
# this construct will accept instances of those things.
1298
180
super(Repository, self).__init__()
1299
181
self._format = _format
1300
182
# the following are part of the public API for Repository:
1301
183
self.bzrdir = a_bzrdir
1302
184
self.control_files = control_files
1303
self._transport = control_files._transport
1304
self.base = self._transport.base
1306
self._reconcile_does_inventory_gc = True
1307
self._reconcile_fixes_text_parents = False
1308
self._reconcile_backsup_inventory = True
1309
self._write_group = None
1310
# Additional places to query for data.
1311
self._fallback_repositories = []
1312
# An InventoryEntry cache, used during deserialization
1313
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1314
# Is it safe to return inventory entries directly from the entry cache,
1315
# rather copying them?
1316
self._safe_to_return_from_cache = False
1319
def user_transport(self):
1320
return self.bzrdir.user_transport
1323
def control_transport(self):
1324
return self._transport
185
self._revision_store = _revision_store
186
self.text_store = text_store
187
# backwards compatibility
188
self.weave_store = text_store
189
# not right yet - should be more semantically clear ?
191
self.control_store = control_store
192
self.control_weaves = control_store
193
# TODO: make sure to construct the right store classes, etc, depending
194
# on whether escaping is required.
1326
196
def __repr__(self):
1327
if self._fallback_repositories:
1328
return '%s(%r, fallback_repositories=%r)' % (
1329
self.__class__.__name__,
1331
self._fallback_repositories)
1333
return '%s(%r)' % (self.__class__.__name__,
1336
def _has_same_fallbacks(self, other_repo):
1337
"""Returns true if the repositories have the same fallbacks."""
1338
my_fb = self._fallback_repositories
1339
other_fb = other_repo._fallback_repositories
1340
if len(my_fb) != len(other_fb):
1342
for f, g in zip(my_fb, other_fb):
1343
if not f.has_same_location(g):
1347
def has_same_location(self, other):
1348
"""Returns a boolean indicating if this repository is at the same
1349
location as another repository.
1351
This might return False even when two repository objects are accessing
1352
the same physical repository via different URLs.
1354
if self.__class__ is not other.__class__:
1356
return (self._transport.base == other._transport.base)
1358
def is_in_write_group(self):
1359
"""Return True if there is an open write group.
1361
:seealso: start_write_group.
1363
return self._write_group is not None
197
return '%s(%r)' % (self.__class__.__name__,
198
self.bzrdir.transport.base)
1365
200
def is_locked(self):
1366
201
return self.control_files.is_locked()
1368
def is_write_locked(self):
1369
"""Return True if this object is write locked."""
1370
return self.is_locked() and self.control_files._lock_mode == 'w'
1372
def lock_write(self, token=None):
1373
"""Lock this repository for writing.
1375
This causes caching within the repository obejct to start accumlating
1376
data during reads, and allows a 'write_group' to be obtained. Write
1377
groups must be used for actual data insertion.
1379
:param token: if this is already locked, then lock_write will fail
1380
unless the token matches the existing lock.
1381
:returns: a token if this instance supports tokens, otherwise None.
1382
:raises TokenLockingNotSupported: when a token is given but this
1383
instance doesn't support using token locks.
1384
:raises MismatchedToken: if the specified token doesn't match the token
1385
of the existing lock.
1386
:seealso: start_write_group.
1388
A token should be passed in if you know that you have locked the object
1389
some other way, and need to synchronise this object's state with that
1392
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
1394
locked = self.is_locked()
1395
result = self.control_files.lock_write(token=token)
1397
self._warn_if_deprecated()
1398
self._note_lock('w')
1399
for repo in self._fallback_repositories:
1400
# Writes don't affect fallback repos
1402
self._refresh_data()
203
def lock_write(self):
204
self.control_files.lock_write()
1405
206
def lock_read(self):
1406
locked = self.is_locked()
1407
207
self.control_files.lock_read()
1409
self._warn_if_deprecated()
1410
self._note_lock('r')
1411
for repo in self._fallback_repositories:
1413
self._refresh_data()
1415
209
def get_physical_lock_status(self):
1416
210
return self.control_files.get_physical_lock_status()
1418
def leave_lock_in_place(self):
1419
"""Tell this repository not to release the physical lock when this
1422
If lock_write doesn't return a token, then this method is not supported.
1424
self.control_files.leave_in_place()
1426
def dont_leave_lock_in_place(self):
1427
"""Tell this repository to release the physical lock when this
1428
object is unlocked, even if it didn't originally acquire it.
1430
If lock_write doesn't return a token, then this method is not supported.
1432
self.control_files.dont_leave_in_place()
1435
def gather_stats(self, revid=None, committers=None):
1436
"""Gather statistics from a revision id.
1438
:param revid: The revision id to gather statistics from, if None, then
1439
no revision specific statistics are gathered.
1440
:param committers: Optional parameter controlling whether to grab
1441
a count of committers from the revision specific statistics.
1442
:return: A dictionary of statistics. Currently this contains:
1443
committers: The number of committers if requested.
1444
firstrev: A tuple with timestamp, timezone for the penultimate left
1445
most ancestor of revid, if revid is not the NULL_REVISION.
1446
latestrev: A tuple with timestamp, timezone for revid, if revid is
1447
not the NULL_REVISION.
1448
revisions: The total revision count in the repository.
1449
size: An estimate disk size of the repository in bytes.
1452
if revid and committers:
1453
result['committers'] = 0
1454
if revid and revid != _mod_revision.NULL_REVISION:
1456
all_committers = set()
1457
revisions = self.get_ancestry(revid)
1458
# pop the leading None
1460
first_revision = None
1462
# ignore the revisions in the middle - just grab first and last
1463
revisions = revisions[0], revisions[-1]
1464
for revision in self.get_revisions(revisions):
1465
if not first_revision:
1466
first_revision = revision
1468
all_committers.add(revision.committer)
1469
last_revision = revision
1471
result['committers'] = len(all_committers)
1472
result['firstrev'] = (first_revision.timestamp,
1473
first_revision.timezone)
1474
result['latestrev'] = (last_revision.timestamp,
1475
last_revision.timezone)
1477
# now gather global repository information
1478
# XXX: This is available for many repos regardless of listability.
1479
if self.user_transport.listable():
1480
# XXX: do we want to __define len__() ?
1481
# Maybe the versionedfiles object should provide a different
1482
# method to get the number of keys.
1483
result['revisions'] = len(self.revisions.keys())
1484
# result['size'] = t
1487
def find_branches(self, using=False):
1488
"""Find branches underneath this repository.
1490
This will include branches inside other branches.
1492
:param using: If True, list only branches using this repository.
1494
if using and not self.is_shared():
1495
return self.bzrdir.list_branches()
1496
class Evaluator(object):
1499
self.first_call = True
1501
def __call__(self, bzrdir):
1502
# On the first call, the parameter is always the bzrdir
1503
# containing the current repo.
1504
if not self.first_call:
1506
repository = bzrdir.open_repository()
1507
except errors.NoRepositoryPresent:
1510
return False, ([], repository)
1511
self.first_call = False
1512
value = (bzrdir.list_branches(), None)
1516
for branches, repository in bzrdir.BzrDir.find_bzrdirs(
1517
self.user_transport, evaluate=Evaluator()):
1518
if branches is not None:
1519
ret.extend(branches)
1520
if not using and repository is not None:
1521
ret.extend(repository.find_branches())
1525
def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
213
def missing_revision_ids(self, other, revision_id=None):
1526
214
"""Return the revision ids that other has that this does not.
1528
216
These are returned in topological order.
1530
218
revision_id: only return revision ids included by revision_id.
1532
return InterRepository.get(other, self).search_missing_revision_ids(
1533
revision_id, find_ghosts)
220
return InterRepository.get(other, self).missing_revision_ids(revision_id)
1722
259
:param revprops: Optional dictionary of revision properties.
1723
260
:param revision_id: Optional revision id.
1725
if self._fallback_repositories:
1726
raise errors.BzrError("Cannot commit from a lightweight checkout "
1727
"to a stacked branch. See "
1728
"https://bugs.launchpad.net/bzr/+bug/375013 for details.")
1729
result = self._commit_builder_class(self, parents, config,
1730
timestamp, timezone, committer, revprops, revision_id)
1731
self.start_write_group()
262
return CommitBuilder(self, parents, config, timestamp, timezone,
263
committer, revprops, revision_id)
1734
@only_raises(errors.LockNotHeld, errors.LockBroken)
1735
265
def unlock(self):
1736
if (self.control_files._lock_count == 1 and
1737
self.control_files._lock_mode == 'w'):
1738
if self._write_group is not None:
1739
self.abort_write_group()
1740
self.control_files.unlock()
1741
raise errors.BzrError(
1742
'Must end write groups before releasing write locks.')
1743
266
self.control_files.unlock()
1744
if self.control_files._lock_count == 0:
1745
self._inventory_entry_cache.clear()
1746
for repo in self._fallback_repositories:
1749
268
@needs_read_lock
1750
def clone(self, a_bzrdir, revision_id=None):
269
def clone(self, a_bzrdir, revision_id=None, basis=None):
1751
270
"""Clone this repository into a_bzrdir using the current format.
1753
272
Currently no check is made that the format of this repository and
1754
273
the bzrdir format are compatible. FIXME RBC 20060201.
1756
:return: The newly created destination repository.
1758
# TODO: deprecate after 0.16; cloning this with all its settings is
1759
# probably not very useful -- mbp 20070423
1760
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
1761
self.copy_content_into(dest_repo, revision_id)
1764
def start_write_group(self):
1765
"""Start a write group in the repository.
1767
Write groups are used by repositories which do not have a 1:1 mapping
1768
between file ids and backend store to manage the insertion of data from
1769
both fetch and commit operations.
1771
A write lock is required around the start_write_group/commit_write_group
1772
for the support of lock-requiring repository formats.
1774
One can only insert data into a repository inside a write group.
1778
if not self.is_write_locked():
1779
raise errors.NotWriteLocked(self)
1780
if self._write_group:
1781
raise errors.BzrError('already in a write group')
1782
self._start_write_group()
1783
# so we can detect unlock/relock - the write group is now entered.
1784
self._write_group = self.get_transaction()
1786
def _start_write_group(self):
1787
"""Template method for per-repository write group startup.
1789
This is called before the write group is considered to be
1794
def sprout(self, to_bzrdir, revision_id=None):
1795
"""Create a descendent repository for new development.
1797
Unlike clone, this does not copy the settings of the repository.
1799
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1800
dest_repo.fetch(self, revision_id=revision_id)
1803
def _create_sprouting_repo(self, a_bzrdir, shared):
1804
275
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1805
276
# use target default format.
1806
dest_repo = a_bzrdir.create_repository()
277
result = a_bzrdir.create_repository()
278
# FIXME RBC 20060209 split out the repository type to avoid this check ?
279
elif isinstance(a_bzrdir._format,
280
(bzrlib.bzrdir.BzrDirFormat4,
281
bzrlib.bzrdir.BzrDirFormat5,
282
bzrlib.bzrdir.BzrDirFormat6)):
283
result = a_bzrdir.open_repository()
1808
# Most control formats need the repository to be specifically
1809
# created, but on some old all-in-one formats it's not needed
1811
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1812
except errors.UninitializableFormat:
1813
dest_repo = a_bzrdir.open_repository()
1816
def _get_sink(self):
1817
"""Return a sink for streaming into this repository."""
1818
return StreamSink(self)
1820
def _get_source(self, to_format):
1821
"""Return a source for streaming from this repository."""
1822
return StreamSource(self, to_format)
285
result = self._format.initialize(a_bzrdir, shared=self.is_shared())
286
self.copy_content_into(result, revision_id, basis)
1824
289
@needs_read_lock
1825
290
def has_revision(self, revision_id):
1826
291
"""True if this repository has a copy of the revision."""
1827
return revision_id in self.has_revisions((revision_id,))
1830
def has_revisions(self, revision_ids):
1831
"""Probe to find out the presence of multiple revisions.
1833
:param revision_ids: An iterable of revision_ids.
1834
:return: A set of the revision_ids that were present.
1836
parent_map = self.revisions.get_parent_map(
1837
[(rev_id,) for rev_id in revision_ids])
1839
if _mod_revision.NULL_REVISION in revision_ids:
1840
result.add(_mod_revision.NULL_REVISION)
1841
result.update([key[0] for key in parent_map])
1845
def get_revision(self, revision_id):
1846
"""Return the Revision object for a named revision."""
1847
return self.get_revisions([revision_id])[0]
292
return self._revision_store.has_revision_id(revision_id,
293
self.get_transaction())
1849
295
@needs_read_lock
1850
296
def get_revision_reconcile(self, revision_id):
1851
297
"""'reconcile' helper routine that allows access to a revision always.
1853
299
This variant of get_revision does not cross check the weave graph
1854
300
against the revision one as get_revision does: but it should only
1855
301
be used by reconcile, or reconcile-alike commands that are correcting
1856
302
or testing the revision graph.
1858
return self._get_revisions([revision_id])[0]
1861
def get_revisions(self, revision_ids):
1862
"""Get many revisions at once.
304
if not revision_id or not isinstance(revision_id, basestring):
305
raise InvalidRevisionId(revision_id=revision_id, branch=self)
306
return self._revision_store.get_revision(revision_id,
307
self.get_transaction())
310
def get_revision_xml(self, revision_id):
311
rev = self.get_revision(revision_id)
313
# the current serializer..
314
self._revision_store._serializer.write_revision(rev, rev_tmp)
316
return rev_tmp.getvalue()
319
def get_revision(self, revision_id):
320
"""Return the Revision object for a named revision"""
321
r = self.get_revision_reconcile(revision_id)
322
# weave corruption can lead to absent revision markers that should be
324
# the following test is reasonably cheap (it needs a single weave read)
325
# and the weave is cached in read transactions. In write transactions
326
# it is not cached but typically we only read a small number of
327
# revisions. For knits when they are introduced we will probably want
328
# to ensure that caching write transactions are in use.
329
inv = self.get_inventory_weave()
330
self._check_revision_parents(r, inv)
333
def _check_revision_parents(self, revision, inventory):
334
"""Private to Repository and Fetch.
1864
Repositories that need to check data on every revision read should
1865
subclass this method.
1867
return self._get_revisions(revision_ids)
1870
def _get_revisions(self, revision_ids):
1871
"""Core work logic to get many revisions without sanity checks."""
1873
for revid, rev in self._iter_revisions(revision_ids):
1875
raise errors.NoSuchRevision(self, revid)
1877
return [revs[revid] for revid in revision_ids]
1879
def _iter_revisions(self, revision_ids):
1880
"""Iterate over revision objects.
1882
:param revision_ids: An iterable of revisions to examine. None may be
1883
passed to request all revisions known to the repository. Note that
1884
not all repositories can find unreferenced revisions; for those
1885
repositories only referenced ones will be returned.
1886
:return: An iterator of (revid, revision) tuples. Absent revisions (
1887
those asked for but not available) are returned as (revid, None).
1889
if revision_ids is None:
1890
revision_ids = self.all_revision_ids()
1892
for rev_id in revision_ids:
1893
if not rev_id or not isinstance(rev_id, basestring):
1894
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1895
keys = [(key,) for key in revision_ids]
1896
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1897
for record in stream:
1898
revid = record.key[0]
1899
if record.storage_kind == 'absent':
1902
text = record.get_bytes_as('fulltext')
1903
rev = self._serializer.read_revision_from_string(text)
1906
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1907
"""Produce a generator of revision deltas.
1909
Note that the input is a sequence of REVISIONS, not revision_ids.
1910
Trees will be held in memory until the generator exits.
1911
Each delta is relative to the revision's lefthand predecessor.
1913
:param specific_fileids: if not None, the result is filtered
1914
so that only those file-ids, their parents and their
1915
children are included.
1917
# Get the revision-ids of interest
1918
required_trees = set()
1919
for revision in revisions:
1920
required_trees.add(revision.revision_id)
1921
required_trees.update(revision.parent_ids[:1])
1923
# Get the matching filtered trees. Note that it's more
1924
# efficient to pass filtered trees to changes_from() rather
1925
# than doing the filtering afterwards. changes_from() could
1926
# arguably do the filtering itself but it's path-based, not
1927
# file-id based, so filtering before or afterwards is
1929
if specific_fileids is None:
1930
trees = dict((t.get_revision_id(), t) for
1931
t in self.revision_trees(required_trees))
1933
trees = dict((t.get_revision_id(), t) for
1934
t in self._filtered_revision_trees(required_trees,
1937
# Calculate the deltas
1938
for revision in revisions:
1939
if not revision.parent_ids:
1940
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1942
old_tree = trees[revision.parent_ids[0]]
1943
yield trees[revision.revision_id].changes_from(old_tree)
1946
def get_revision_delta(self, revision_id, specific_fileids=None):
1947
"""Return the delta for one revision.
1949
The delta is relative to the left-hand predecessor of the
1952
:param specific_fileids: if not None, the result is filtered
1953
so that only those file-ids, their parents and their
1954
children are included.
1956
r = self.get_revision(revision_id)
1957
return list(self.get_deltas_for_revisions([r],
1958
specific_fileids=specific_fileids))[0]
336
This checks the parentage of revision in an inventory weave for
337
consistency and is only applicable to inventory-weave-for-ancestry
338
using repository formats & fetchers.
340
weave_parents = inventory.get_parents(revision.revision_id)
341
weave_names = inventory.versions()
342
for parent_id in revision.parent_ids:
343
if parent_id in weave_names:
344
# this parent must not be a ghost.
345
if not parent_id in weave_parents:
347
raise errors.CorruptRepository(self)
1960
349
@needs_write_lock
1961
350
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1962
351
signature = gpg_strategy.sign(plaintext)
1963
self.add_signature_text(revision_id, signature)
1966
def add_signature_text(self, revision_id, signature):
1967
self.signatures.add_lines((revision_id,), (),
1968
osutils.split_lines(signature))
1970
def find_text_key_references(self):
1971
"""Find the text key references within the repository.
1973
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1974
to whether they were referred to by the inventory of the
1975
revision_id that they contain. The inventory texts from all present
1976
revision ids are assessed to generate this report.
1978
revision_keys = self.revisions.keys()
1979
w = self.inventories
1980
pb = ui.ui_factory.nested_progress_bar()
1982
return self._find_text_key_references_from_xml_inventory_lines(
1983
w.iter_lines_added_or_present_in_keys(revision_keys, pb=pb))
1987
def _find_text_key_references_from_xml_inventory_lines(self,
1989
"""Core routine for extracting references to texts from inventories.
1991
This performs the translation of xml lines to revision ids.
1993
:param line_iterator: An iterator of lines, origin_version_id
1994
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1995
to whether they were referred to by the inventory of the
1996
revision_id that they contain. Note that if that revision_id was
1997
not part of the line_iterator's output then False will be given -
1998
even though it may actually refer to that key.
2000
if not self._serializer.support_altered_by_hack:
2001
raise AssertionError(
2002
"_find_text_key_references_from_xml_inventory_lines only "
2003
"supported for branches which store inventory as unnested xml"
2004
", not on %r" % self)
352
self._revision_store.add_revision_signature_text(revision_id,
354
self.get_transaction())
356
def fileids_altered_by_revision_ids(self, revision_ids):
357
"""Find the file ids and versions affected by revisions.
359
:param revisions: an iterable containing revision ids.
360
:return: a dictionary mapping altered file-ids to an iterable of
361
revision_ids. Each altered file-ids has the exact revision_ids that
362
altered it listed explicitly.
364
assert isinstance(self._format, (RepositoryFormat5,
367
RepositoryFormatKnit1)), \
368
("fileids_altered_by_revision_ids only supported for branches "
369
"which store inventory as unnested xml, not on %r" % self)
370
selected_revision_ids = set(revision_ids)
371
w = self.get_inventory_weave()
2007
374
# this code needs to read every new line in every inventory for the
2008
375
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
2009
# not present in one of those inventories is unnecessary but not
376
# not present in one of those inventories is unnecessary but not
2010
377
# harmful because we are filtering by the revision id marker in the
2011
# inventory lines : we only select file ids altered in one of those
378
# inventory lines : we only select file ids altered in one of those
2012
379
# revisions. We don't need to see all lines in the inventory because
2013
380
# only those added in an inventory in rev X can contain a revision=X
2015
unescape_revid_cache = {}
2016
unescape_fileid_cache = {}
2018
# jam 20061218 In a big fetch, this handles hundreds of thousands
2019
# of lines, so it has had a lot of inlining and optimizing done.
2020
# Sorry that it is a little bit messy.
2021
# Move several functions to be local variables, since this is a long
2023
search = self._file_ids_altered_regex.search
2024
unescape = _unescape_xml
2025
setdefault = result.setdefault
2026
for line, line_key in line_iterator:
2027
match = search(line)
2030
# One call to match.group() returning multiple items is quite a
2031
# bit faster than 2 calls to match.group() each returning 1
2032
file_id, revision_id = match.group('file_id', 'revision_id')
2034
# Inlining the cache lookups helps a lot when you make 170,000
2035
# lines and 350k ids, versus 8.4 unique ids.
2036
# Using a cache helps in 2 ways:
2037
# 1) Avoids unnecessary decoding calls
2038
# 2) Re-uses cached strings, which helps in future set and
2040
# (2) is enough that removing encoding entirely along with
2041
# the cache (so we are using plain strings) results in no
2042
# performance improvement.
2044
revision_id = unescape_revid_cache[revision_id]
2046
unescaped = unescape(revision_id)
2047
unescape_revid_cache[revision_id] = unescaped
2048
revision_id = unescaped
2050
# Note that unconditionally unescaping means that we deserialise
2051
# every fileid, which for general 'pull' is not great, but we don't
2052
# really want to have some many fulltexts that this matters anyway.
2055
file_id = unescape_fileid_cache[file_id]
2057
unescaped = unescape(file_id)
2058
unescape_fileid_cache[file_id] = unescaped
2061
key = (file_id, revision_id)
2062
setdefault(key, False)
2063
if revision_id == line_key[-1]:
2067
def _inventory_xml_lines_for_keys(self, keys):
2068
"""Get a line iterator of the sort needed for findind references.
2070
Not relevant for non-xml inventory repositories.
2072
Ghosts in revision_keys are ignored.
2074
:param revision_keys: The revision keys for the inventories to inspect.
2075
:return: An iterator over (inventory line, revid) for the fulltexts of
2076
all of the xml inventories specified by revision_keys.
2078
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2079
for record in stream:
2080
if record.storage_kind != 'absent':
2081
chunks = record.get_bytes_as('chunked')
2082
revid = record.key[-1]
2083
lines = osutils.chunks_to_lines(chunks)
2087
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
2089
"""Helper routine for fileids_altered_by_revision_ids.
2091
This performs the translation of xml lines to revision ids.
2093
:param line_iterator: An iterator of lines, origin_version_id
2094
:param revision_keys: The revision ids to filter for. This should be a
2095
set or other type which supports efficient __contains__ lookups, as
2096
the revision key from each parsed line will be looked up in the
2097
revision_keys filter.
2098
:return: a dictionary mapping altered file-ids to an iterable of
2099
revision_ids. Each altered file-ids has the exact revision_ids that
2100
altered it listed explicitly.
2102
seen = set(self._find_text_key_references_from_xml_inventory_lines(
2103
line_iterator).iterkeys())
2104
parent_keys = self._find_parent_keys_of_revisions(revision_keys)
2105
parent_seen = set(self._find_text_key_references_from_xml_inventory_lines(
2106
self._inventory_xml_lines_for_keys(parent_keys)))
2107
new_keys = seen - parent_seen
2109
setdefault = result.setdefault
2110
for key in new_keys:
2111
setdefault(key[0], set()).add(key[-1])
2114
def _find_parent_ids_of_revisions(self, revision_ids):
2115
"""Find all parent ids that are mentioned in the revision graph.
2117
:return: set of revisions that are parents of revision_ids which are
2118
not part of revision_ids themselves
2120
parent_map = self.get_parent_map(revision_ids)
2122
map(parent_ids.update, parent_map.itervalues())
2123
parent_ids.difference_update(revision_ids)
2124
parent_ids.discard(_mod_revision.NULL_REVISION)
2127
def _find_parent_keys_of_revisions(self, revision_keys):
2128
"""Similar to _find_parent_ids_of_revisions, but used with keys.
2130
:param revision_keys: An iterable of revision_keys.
2131
:return: The parents of all revision_keys that are not already in
2134
parent_map = self.revisions.get_parent_map(revision_keys)
2136
map(parent_keys.update, parent_map.itervalues())
2137
parent_keys.difference_update(revision_keys)
2138
parent_keys.discard(_mod_revision.NULL_REVISION)
2141
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
2142
"""Find the file ids and versions affected by revisions.
2144
:param revisions: an iterable containing revision ids.
2145
:param _inv_weave: The inventory weave from this repository or None.
2146
If None, the inventory weave will be opened automatically.
2147
:return: a dictionary mapping altered file-ids to an iterable of
2148
revision_ids. Each altered file-ids has the exact revision_ids that
2149
altered it listed explicitly.
2151
selected_keys = set((revid,) for revid in revision_ids)
2152
w = _inv_weave or self.inventories
2153
return self._find_file_ids_from_xml_inventory_lines(
2154
w.iter_lines_added_or_present_in_keys(
2155
selected_keys, pb=None),
2158
def iter_files_bytes(self, desired_files):
2159
"""Iterate through file versions.
2161
Files will not necessarily be returned in the order they occur in
2162
desired_files. No specific order is guaranteed.
2164
Yields pairs of identifier, bytes_iterator. identifier is an opaque
2165
value supplied by the caller as part of desired_files. It should
2166
uniquely identify the file version in the caller's context. (Examples:
2167
an index number or a TreeTransform trans_id.)
2169
bytes_iterator is an iterable of bytestrings for the file. The
2170
kind of iterable and length of the bytestrings are unspecified, but for
2171
this implementation, it is a list of bytes produced by
2172
VersionedFile.get_record_stream().
2174
:param desired_files: a list of (file_id, revision_id, identifier)
2178
for file_id, revision_id, callable_data in desired_files:
2179
text_keys[(file_id, revision_id)] = callable_data
2180
for record in self.texts.get_record_stream(text_keys, 'unordered', True):
2181
if record.storage_kind == 'absent':
2182
raise errors.RevisionNotPresent(record.key, self)
2183
yield text_keys[record.key], record.get_bytes_as('chunked')
2185
def _generate_text_key_index(self, text_key_references=None,
2187
"""Generate a new text key index for the repository.
2189
This is an expensive function that will take considerable time to run.
2191
:return: A dict mapping text keys ((file_id, revision_id) tuples) to a
2192
list of parents, also text keys. When a given key has no parents,
2193
the parents list will be [NULL_REVISION].
2195
# All revisions, to find inventory parents.
2196
if ancestors is None:
2197
graph = self.get_graph()
2198
ancestors = graph.get_parent_map(self.all_revision_ids())
2199
if text_key_references is None:
2200
text_key_references = self.find_text_key_references()
2201
pb = ui.ui_factory.nested_progress_bar()
2203
return self._do_generate_text_key_index(ancestors,
2204
text_key_references, pb)
2208
def _do_generate_text_key_index(self, ancestors, text_key_references, pb):
2209
"""Helper for _generate_text_key_index to avoid deep nesting."""
2210
revision_order = tsort.topo_sort(ancestors)
2211
invalid_keys = set()
2213
for revision_id in revision_order:
2214
revision_keys[revision_id] = set()
2215
text_count = len(text_key_references)
2216
# a cache of the text keys to allow reuse; costs a dict of all the
2217
# keys, but saves a 2-tuple for every child of a given key.
2219
for text_key, valid in text_key_references.iteritems():
2221
invalid_keys.add(text_key)
2223
revision_keys[text_key[1]].add(text_key)
2224
text_key_cache[text_key] = text_key
2225
del text_key_references
2227
text_graph = graph.Graph(graph.DictParentsProvider(text_index))
2228
NULL_REVISION = _mod_revision.NULL_REVISION
2229
# Set a cache with a size of 10 - this suffices for bzr.dev but may be
2230
# too small for large or very branchy trees. However, for 55K path
2231
# trees, it would be easy to use too much memory trivially. Ideally we
2232
# could gauge this by looking at available real memory etc, but this is
2233
# always a tricky proposition.
2234
inventory_cache = lru_cache.LRUCache(10)
2235
batch_size = 10 # should be ~150MB on a 55K path tree
2236
batch_count = len(revision_order) / batch_size + 1
2238
pb.update("Calculating text parents", processed_texts, text_count)
2239
for offset in xrange(batch_count):
2240
to_query = revision_order[offset * batch_size:(offset + 1) *
2244
for revision_id in to_query:
2245
parent_ids = ancestors[revision_id]
2246
for text_key in revision_keys[revision_id]:
2247
pb.update("Calculating text parents", processed_texts)
2248
processed_texts += 1
2249
candidate_parents = []
2250
for parent_id in parent_ids:
2251
parent_text_key = (text_key[0], parent_id)
2253
check_parent = parent_text_key not in \
2254
revision_keys[parent_id]
2256
# the parent parent_id is a ghost:
2257
check_parent = False
2258
# truncate the derived graph against this ghost.
2259
parent_text_key = None
2261
# look at the parent commit details inventories to
2262
# determine possible candidates in the per file graph.
2265
inv = inventory_cache[parent_id]
2267
inv = self.revision_tree(parent_id).inventory
2268
inventory_cache[parent_id] = inv
2270
parent_entry = inv[text_key[0]]
2271
except (KeyError, errors.NoSuchId):
2273
if parent_entry is not None:
2275
text_key[0], parent_entry.revision)
2277
parent_text_key = None
2278
if parent_text_key is not None:
2279
candidate_parents.append(
2280
text_key_cache[parent_text_key])
2281
parent_heads = text_graph.heads(candidate_parents)
2282
new_parents = list(parent_heads)
2283
new_parents.sort(key=lambda x:candidate_parents.index(x))
2284
if new_parents == []:
2285
new_parents = [NULL_REVISION]
2286
text_index[text_key] = new_parents
2288
for text_key in invalid_keys:
2289
text_index[text_key] = [NULL_REVISION]
2292
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
2293
"""Get an iterable listing the keys of all the data introduced by a set
2296
The keys will be ordered so that the corresponding items can be safely
2297
fetched and inserted in that order.
2299
:returns: An iterable producing tuples of (knit-kind, file-id,
2300
versions). knit-kind is one of 'file', 'inventory', 'signatures',
2301
'revisions'. file-id is None unless knit-kind is 'file'.
2303
for result in self._find_file_keys_to_fetch(revision_ids, _files_pb):
2306
for result in self._find_non_file_keys_to_fetch(revision_ids):
2309
def _find_file_keys_to_fetch(self, revision_ids, pb):
2310
# XXX: it's a bit weird to control the inventory weave caching in this
2311
# generator. Ideally the caching would be done in fetch.py I think. Or
2312
# maybe this generator should explicitly have the contract that it
2313
# should not be iterated until the previously yielded item has been
2315
inv_w = self.inventories
2317
# file ids that changed
2318
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
2320
num_file_ids = len(file_ids)
2321
for file_id, altered_versions in file_ids.iteritems():
2323
pb.update("Fetch texts", count, num_file_ids)
2325
yield ("file", file_id, altered_versions)
2327
def _find_non_file_keys_to_fetch(self, revision_ids):
2329
yield ("inventory", None, revision_ids)
2332
# XXX: Note ATM no callers actually pay attention to this return
2333
# instead they just use the list of revision ids and ignore
2334
# missing sigs. Consider removing this work entirely
2335
revisions_with_signatures = set(self.signatures.get_parent_map(
2336
[(r,) for r in revision_ids]))
2337
revisions_with_signatures = set(
2338
[r for (r,) in revisions_with_signatures])
2339
revisions_with_signatures.intersection_update(revision_ids)
2340
yield ("signatures", None, revisions_with_signatures)
2343
yield ("revisions", None, revision_ids)
382
for line in w.iter_lines_added_or_present_in_versions(selected_revision_ids):
383
start = line.find('file_id="')+9
384
if start < 9: continue
385
end = line.find('"', start)
387
file_id = _unescape_xml(line[start:end])
389
start = line.find('revision="')+10
390
if start < 10: continue
391
end = line.find('"', start)
393
revision_id = _unescape_xml(line[start:end])
394
if revision_id in selected_revision_ids:
395
result.setdefault(file_id, set()).add(revision_id)
399
def get_inventory_weave(self):
400
return self.control_weaves.get_weave('inventory',
401
self.get_transaction())
2345
403
@needs_read_lock
2346
404
def get_inventory(self, revision_id):
2347
"""Get Inventory object by revision id."""
2348
return self.iter_inventories([revision_id]).next()
2350
def iter_inventories(self, revision_ids, ordering=None):
2351
"""Get many inventories by revision_ids.
2353
This will buffer some or all of the texts used in constructing the
2354
inventories in memory, but will only parse a single inventory at a
2357
:param revision_ids: The expected revision ids of the inventories.
2358
:param ordering: optional ordering, e.g. 'topological'. If not
2359
specified, the order of revision_ids will be preserved (by
2360
buffering if necessary).
2361
:return: An iterator of inventories.
2363
if ((None in revision_ids)
2364
or (_mod_revision.NULL_REVISION in revision_ids)):
2365
raise ValueError('cannot get null revision inventory')
2366
return self._iter_inventories(revision_ids, ordering)
2368
def _iter_inventories(self, revision_ids, ordering):
2369
"""single-document based inventory iteration."""
2370
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2371
for text, revision_id in inv_xmls:
2372
yield self._deserialise_inventory(revision_id, text)
2374
def _iter_inventory_xmls(self, revision_ids, ordering):
2375
if ordering is None:
2376
order_as_requested = True
2377
ordering = 'unordered'
2379
order_as_requested = False
2380
keys = [(revision_id,) for revision_id in revision_ids]
2383
if order_as_requested:
2384
key_iter = iter(keys)
2385
next_key = key_iter.next()
2386
stream = self.inventories.get_record_stream(keys, ordering, True)
2388
for record in stream:
2389
if record.storage_kind != 'absent':
2390
chunks = record.get_bytes_as('chunked')
2391
if order_as_requested:
2392
text_chunks[record.key] = chunks
2394
yield ''.join(chunks), record.key[-1]
2396
raise errors.NoSuchRevision(self, record.key)
2397
if order_as_requested:
2398
# Yield as many results as we can while preserving order.
2399
while next_key in text_chunks:
2400
chunks = text_chunks.pop(next_key)
2401
yield ''.join(chunks), next_key[-1]
2403
next_key = key_iter.next()
2404
except StopIteration:
2405
# We still want to fully consume the get_record_stream,
2406
# just in case it is not actually finished at this point
2410
def _deserialise_inventory(self, revision_id, xml):
2411
"""Transform the xml into an inventory object.
405
"""Get Inventory object by hash."""
406
return self.deserialise_inventory(
407
revision_id, self.get_inventory_xml(revision_id))
409
def deserialise_inventory(self, revision_id, xml):
410
"""Transform the xml into an inventory object.
2413
412
:param revision_id: The expected revision id of the inventory.
2414
413
:param xml: A serialised inventory.
2416
result = self._serializer.read_inventory_from_string(xml, revision_id,
2417
entry_cache=self._inventory_entry_cache,
2418
return_from_cache=self._safe_to_return_from_cache)
2419
if result.revision_id != revision_id:
2420
raise AssertionError('revision id mismatch %s != %s' % (
2421
result.revision_id, revision_id))
415
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
418
def get_inventory_xml(self, revision_id):
419
"""Get inventory XML as a file object."""
421
assert isinstance(revision_id, basestring), type(revision_id)
422
iw = self.get_inventory_weave()
423
return iw.get_text(revision_id)
425
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
428
def get_inventory_sha1(self, revision_id):
429
"""Return the sha1 hash of the inventory entry
431
return self.get_revision(revision_id).inventory_sha1
434
def get_revision_graph(self, revision_id=None):
435
"""Return a dictionary containing the revision graph.
437
:return: a dictionary of revision_id->revision_parents_list.
439
weave = self.get_inventory_weave()
440
all_revisions = self._eliminate_revisions_not_present(weave.versions())
441
entire_graph = dict([(node, weave.get_parents(node)) for
442
node in all_revisions])
443
if revision_id is None:
445
elif revision_id not in entire_graph:
446
raise errors.NoSuchRevision(self, revision_id)
448
# add what can be reached from revision_id
450
pending = set([revision_id])
451
while len(pending) > 0:
453
result[node] = entire_graph[node]
454
for revision_id in result[node]:
455
if revision_id not in result:
456
pending.add(revision_id)
460
def get_revision_graph_with_ghosts(self, revision_ids=None):
461
"""Return a graph of the revisions with ghosts marked as applicable.
463
:param revision_ids: an iterable of revisions to graph or None for all.
464
:return: a Graph object with the graph reachable from revision_ids.
468
pending = set(self.all_revision_ids())
471
pending = set(revision_ids)
472
required = set(revision_ids)
475
revision_id = pending.pop()
477
rev = self.get_revision(revision_id)
478
except errors.NoSuchRevision:
479
if revision_id in required:
482
result.add_ghost(revision_id)
484
for parent_id in rev.parent_ids:
485
# is this queued or done ?
486
if (parent_id not in pending and
487
parent_id not in done):
489
pending.add(parent_id)
490
result.add_node(revision_id, rev.parent_ids)
491
done.add(revision_id)
2424
def get_serializer_format(self):
2425
return self._serializer.format_num
2428
def _get_inventory_xml(self, revision_id):
2429
"""Get serialized inventory as a string."""
2430
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2432
text, revision_id = texts.next()
2433
except StopIteration:
2434
raise errors.HistoryMissing(self, 'inventory', revision_id)
2437
def get_rev_id_for_revno(self, revno, known_pair):
2438
"""Return the revision id of a revno, given a later (revno, revid)
2439
pair in the same history.
2441
:return: if found (True, revid). If the available history ran out
2442
before reaching the revno, then this returns
2443
(False, (closest_revno, closest_revid)).
2445
known_revno, known_revid = known_pair
2446
partial_history = [known_revid]
2447
distance_from_known = known_revno - revno
2448
if distance_from_known < 0:
2450
'requested revno (%d) is later than given known revno (%d)'
2451
% (revno, known_revno))
2454
self, partial_history, stop_index=distance_from_known)
2455
except errors.RevisionNotPresent, err:
2456
if err.revision_id == known_revid:
2457
# The start revision (known_revid) wasn't found.
2459
# This is a stacked repository with no fallbacks, or a there's a
2460
# left-hand ghost. Either way, even though the revision named in
2461
# the error isn't in this repo, we know it's the next step in this
2462
# left-hand history.
2463
partial_history.append(err.revision_id)
2464
if len(partial_history) <= distance_from_known:
2465
# Didn't find enough history to get a revid for the revno.
2466
earliest_revno = known_revno - len(partial_history) + 1
2467
return (False, (earliest_revno, partial_history[-1]))
2468
if len(partial_history) - 1 > distance_from_known:
2469
raise AssertionError('_iter_for_revno returned too much history')
2470
return (True, partial_history[-1])
2472
def iter_reverse_revision_history(self, revision_id):
2473
"""Iterate backwards through revision ids in the lefthand history
2475
:param revision_id: The revision id to start with. All its lefthand
2476
ancestors will be traversed.
2478
graph = self.get_graph()
2479
next_id = revision_id
2481
if next_id in (None, _mod_revision.NULL_REVISION):
2484
parents = graph.get_parent_map([next_id])[next_id]
2486
raise errors.RevisionNotPresent(next_id, self)
2488
if len(parents) == 0:
2491
next_id = parents[0]
495
def get_revision_inventory(self, revision_id):
496
"""Return inventory of a past revision."""
497
# TODO: Unify this with get_inventory()
498
# bzr 0.0.6 and later imposes the constraint that the inventory_id
499
# must be the same as its revision, so this is trivial.
500
if revision_id is None:
501
# This does not make sense: if there is no revision,
502
# then it is the current tree inventory surely ?!
503
# and thus get_root_id() is something that looks at the last
504
# commit on the branch, and the get_root_id is an inventory check.
505
raise NotImplementedError
506
# return Inventory(self.get_root_id())
508
return self.get_inventory(revision_id)
2493
511
def is_shared(self):
2494
512
"""Return True if this repository is flagged as a shared repository."""
2495
513
raise NotImplementedError(self.is_shared)
2948
self._transport.delete('no-working-trees')
761
self.control_files._transport.delete('no-working-trees')
2949
762
except errors.NoSuchFile:
2952
self._transport.put_bytes('no-working-trees', '',
2953
mode=self.bzrdir._get_file_mode())
765
self.control_files.put_utf8('no-working-trees', '')
2955
767
def make_working_trees(self):
2956
768
"""Returns the policy for making working trees on new branches."""
2957
return not self._transport.has('no-working-trees')
2960
class MetaDirVersionedFileRepository(MetaDirRepository):
2961
"""Repositories in a meta-dir, that work via versioned file objects."""
2963
def __init__(self, _format, a_bzrdir, control_files):
2964
super(MetaDirVersionedFileRepository, self).__init__(_format, a_bzrdir,
2968
network_format_registry = registry.FormatRegistry()
2969
"""Registry of formats indexed by their network name.
2971
The network name for a repository format is an identifier that can be used when
2972
referring to formats with smart server operations. See
2973
RepositoryFormat.network_name() for more detail.
2977
format_registry = registry.FormatRegistry(network_format_registry)
2978
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
2980
This can contain either format instances themselves, or classes/factories that
2981
can be called to obtain one.
2985
#####################################################################
2986
# Repository Formats
769
return not self.control_files._transport.has('no-working-trees')
772
class KnitRepository(MetaDirRepository):
773
"""Knit format repository."""
775
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
776
inv_vf.add_lines_with_ghosts(revid, parents, lines)
779
def _all_revision_ids(self):
780
"""See Repository.all_revision_ids()."""
781
# Knits get the revision graph from the index of the revision knit, so
782
# it's always possible even if they're on an unlistable transport.
783
return self._revision_store.all_revision_ids(self.get_transaction())
785
def fileid_involved_between_revs(self, from_revid, to_revid):
786
"""Find file_id(s) which are involved in the changes between revisions.
788
This determines the set of revisions which are involved, and then
789
finds all file ids affected by those revisions.
791
vf = self._get_revision_vf()
792
from_set = set(vf.get_ancestry(from_revid))
793
to_set = set(vf.get_ancestry(to_revid))
794
changed = to_set.difference(from_set)
795
return self._fileid_involved_by_set(changed)
797
def fileid_involved(self, last_revid=None):
798
"""Find all file_ids modified in the ancestry of last_revid.
800
:param last_revid: If None, last_revision() will be used.
803
changed = set(self.all_revision_ids())
805
changed = set(self.get_ancestry(last_revid))
808
return self._fileid_involved_by_set(changed)
811
def get_ancestry(self, revision_id):
812
"""Return a list of revision-ids integrated by a revision.
814
This is topologically sorted.
816
if revision_id is None:
818
vf = self._get_revision_vf()
820
return [None] + vf.get_ancestry(revision_id)
821
except errors.RevisionNotPresent:
822
raise errors.NoSuchRevision(self, revision_id)
825
def get_revision(self, revision_id):
826
"""Return the Revision object for a named revision"""
827
return self.get_revision_reconcile(revision_id)
830
def get_revision_graph(self, revision_id=None):
831
"""Return a dictionary containing the revision graph.
833
:return: a dictionary of revision_id->revision_parents_list.
835
weave = self._get_revision_vf()
836
entire_graph = weave.get_graph()
837
if revision_id is None:
838
return weave.get_graph()
839
elif revision_id not in weave:
840
raise errors.NoSuchRevision(self, revision_id)
842
# add what can be reached from revision_id
844
pending = set([revision_id])
845
while len(pending) > 0:
847
result[node] = weave.get_parents(node)
848
for revision_id in result[node]:
849
if revision_id not in result:
850
pending.add(revision_id)
854
def get_revision_graph_with_ghosts(self, revision_ids=None):
855
"""Return a graph of the revisions with ghosts marked as applicable.
857
:param revision_ids: an iterable of revisions to graph or None for all.
858
:return: a Graph object with the graph reachable from revision_ids.
861
vf = self._get_revision_vf()
862
versions = set(vf.versions())
864
pending = set(self.all_revision_ids())
867
pending = set(revision_ids)
868
required = set(revision_ids)
871
revision_id = pending.pop()
872
if not revision_id in versions:
873
if revision_id in required:
874
raise errors.NoSuchRevision(self, revision_id)
876
result.add_ghost(revision_id)
877
# mark it as done so we don't try for it again.
878
done.add(revision_id)
880
parent_ids = vf.get_parents_with_ghosts(revision_id)
881
for parent_id in parent_ids:
882
# is this queued or done ?
883
if (parent_id not in pending and
884
parent_id not in done):
886
pending.add(parent_id)
887
result.add_node(revision_id, parent_ids)
888
done.add(revision_id)
891
def _get_revision_vf(self):
892
""":return: a versioned file containing the revisions."""
893
vf = self._revision_store.get_revision_file(self.get_transaction())
897
def reconcile(self, other=None, thorough=False):
898
"""Reconcile this repository."""
899
from bzrlib.reconcile import KnitReconciler
900
reconciler = KnitReconciler(self, thorough=thorough)
901
reconciler.reconcile()
904
def revision_parents(self, revid):
905
return self._get_revision_vf().get_parents(rev_id)
2988
907
class RepositoryFormat(object):
2989
908
"""A repository format.
2991
Formats provide four things:
910
Formats provide three things:
2992
911
* An initialization routine to construct repository data on disk.
2993
* a optional format string which is used when the BzrDir supports
912
* a format string which is used when the BzrDir supports versioned
2995
914
* an open routine which returns a Repository instance.
2996
* A network name for referring to the format in smart server RPC
2999
There is one and only one Format subclass for each on-disk format. But
3000
there can be one Repository subclass that is used for several different
3001
formats. The _format attribute on a Repository instance can be used to
3002
determine the disk format.
3004
Formats are placed in a registry by their format string for reference
3005
during opening. These should be subclasses of RepositoryFormat for
916
Formats are placed in an dict by their format string for reference
917
during opening. These should be subclasses of RepositoryFormat
3008
920
Once a format is deprecated, just deprecate the initialize and open
3009
methods on the format class. Do not deprecate the object, as the
3010
object may be created even when a repository instance hasn't been
921
methods on the format class. Do not deprecate the object, as the
922
object will be created every system load.
3013
924
Common instance attributes:
3014
925
_matchingbzrdir - the bzrdir format that the repository format was
3015
926
originally written to work with. This can be used if manually
3016
927
constructing a bzrdir and repository, or more commonly for test suite
3020
# Set to True or False in derived classes. True indicates that the format
3021
# supports ghosts gracefully.
3022
supports_ghosts = None
3023
# Can this repository be given external locations to lookup additional
3024
# data. Set to True or False in derived classes.
3025
supports_external_lookups = None
3026
# Does this format support CHK bytestring lookups. Set to True or False in
3028
supports_chks = None
3029
# Should commit add an inventory, or an inventory delta to the repository.
3030
_commit_inv_deltas = True
3031
# What order should fetch operations request streams in?
3032
# The default is unordered as that is the cheapest for an origin to
3034
_fetch_order = 'unordered'
3035
# Does this repository format use deltas that can be fetched as-deltas ?
3036
# (E.g. knits, where the knit deltas can be transplanted intact.
3037
# We default to False, which will ensure that enough data to get
3038
# a full text out of any fetch stream will be grabbed.
3039
_fetch_uses_deltas = False
3040
# Should fetch trigger a reconcile after the fetch? Only needed for
3041
# some repository formats that can suffer internal inconsistencies.
3042
_fetch_reconcile = False
3043
# Does this format have < O(tree_size) delta generation. Used to hint what
3044
# code path for commit, amongst other things.
3046
# Does doing a pack operation compress data? Useful for the pack UI command
3047
# (so if there is one pack, the operation can still proceed because it may
3048
# help), and for fetching when data won't have come from the same
3050
pack_compresses = False
3051
# Does the repository inventory storage understand references to trees?
3052
supports_tree_reference = None
3053
# Is the format experimental ?
3054
experimental = False
3057
return "%s()" % self.__class__.__name__
3059
def __eq__(self, other):
3060
# format objects are generally stateless
3061
return isinstance(other, self.__class__)
3063
def __ne__(self, other):
3064
return not self == other
931
_default_format = None
932
"""The default format used for new repositories."""
935
"""The known formats."""
3067
938
def find_format(klass, a_bzrdir):
3068
"""Return the format for the repository object in a_bzrdir.
3070
This is used by bzr native formats that have a "format" file in
3071
the repository. Other methods may be used by different types of
939
"""Return the format for the repository object in a_bzrdir."""
3075
941
transport = a_bzrdir.get_repository_transport(None)
3076
format_string = transport.get_bytes("format")
3077
return format_registry.get(format_string)
942
format_string = transport.get("format").read()
943
return klass._formats[format_string]
3078
944
except errors.NoSuchFile:
3079
945
raise errors.NoRepositoryPresent(a_bzrdir)
3080
946
except KeyError:
3081
raise errors.UnknownFormatError(format=format_string,
3085
def register_format(klass, format):
3086
format_registry.register(format.get_format_string(), format)
3089
def unregister_format(klass, format):
3090
format_registry.remove(format.get_format_string())
947
raise errors.UnknownFormatError(format_string)
949
def _get_control_store(self, repo_transport, control_files):
950
"""Return the control store for this repository."""
951
raise NotImplementedError(self._get_control_store)
3093
954
def get_default_format(klass):
3094
955
"""Return the current default format."""
3095
from bzrlib import bzrdir
3096
return bzrdir.format_registry.make_bzrdir('default').repository_format
956
return klass._default_format
3098
958
def get_format_string(self):
3099
959
"""Return the ASCII format string that identifies this format.
3101
Note that in pre format ?? repositories the format string is
961
Note that in pre format ?? repositories the format string is
3102
962
not permitted nor written to disk.
3104
964
raise NotImplementedError(self.get_format_string)
3135
1016
:param a_bzrdir: The bzrdir to put the new repository in it.
3136
1017
:param shared: The repository should be initialized as a sharable one.
3137
:returns: The new repository object.
3139
1019
This may raise UninitializableFormat if shared repository are not
3140
1020
compatible the a_bzrdir.
3142
raise NotImplementedError(self.initialize)
3144
1023
def is_supported(self):
3145
1024
"""Is this format supported?
3147
1026
Supported formats must be initializable and openable.
3148
Unsupported formats may not support initialization or committing or
1027
Unsupported formats may not support initialization or committing or
3149
1028
some other features depending on the reason for not being supported.
3153
def network_name(self):
3154
"""A simple byte string uniquely identifying this format for RPC calls.
3156
MetaDir repository formats use their disk format string to identify the
3157
repository over the wire. All in one formats such as bzr < 0.8, and
3158
foreign formats like svn/git and hg should use some marker which is
3159
unique and immutable.
3161
raise NotImplementedError(self.network_name)
3163
def check_conversion_target(self, target_format):
3164
if self.rich_root_data and not target_format.rich_root_data:
3165
raise errors.BadConversionTarget(
3166
'Does not support rich root data.', target_format,
3168
if (self.supports_tree_reference and
3169
not getattr(target_format, 'supports_tree_reference', False)):
3170
raise errors.BadConversionTarget(
3171
'Does not support nested trees', target_format,
3174
1032
def open(self, a_bzrdir, _found=False):
3175
1033
"""Return an instance of this format for the bzrdir a_bzrdir.
3177
1035
_found is a private parameter, do not use it.
3179
1037
raise NotImplementedError(self.open)
3181
def _run_post_repo_init_hooks(self, repository, a_bzrdir, shared):
3182
from bzrlib.bzrdir import BzrDir, RepoInitHookParams
3183
hooks = BzrDir.hooks['post_repo_init']
3186
params = RepoInitHookParams(repository, self, a_bzrdir, shared)
1040
def register_format(klass, format):
1041
klass._formats[format.get_format_string()] = format
1044
def set_default_format(klass, format):
1045
klass._default_format = format
1048
def unregister_format(klass, format):
1049
assert klass._formats[format.get_format_string()] is format
1050
del klass._formats[format.get_format_string()]
1053
class PreSplitOutRepositoryFormat(RepositoryFormat):
1054
"""Base class for the pre split out repository formats."""
1056
def initialize(self, a_bzrdir, shared=False, _internal=False):
1057
"""Create a weave repository.
1059
TODO: when creating split out bzr branch formats, move this to a common
1060
base for Format5, Format6. or something like that.
1062
from bzrlib.weavefile import write_weave_v5
1063
from bzrlib.weave import Weave
1066
raise errors.IncompatibleFormat(self, a_bzrdir._format)
1069
# always initialized when the bzrdir is.
1070
return self.open(a_bzrdir, _found=True)
1072
# Create an empty weave
1074
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1075
empty_weave = sio.getvalue()
1077
mutter('creating repository in %s.', a_bzrdir.transport.base)
1078
dirs = ['revision-store', 'weaves']
1079
files = [('inventory.weave', StringIO(empty_weave)),
1082
# FIXME: RBC 20060125 don't peek under the covers
1083
# NB: no need to escape relative paths that are url safe.
1084
control_files = LockableFiles(a_bzrdir.transport, 'branch-lock',
1086
control_files.create_lock()
1087
control_files.lock_write()
1088
control_files._transport.mkdir_multi(dirs,
1089
mode=control_files._dir_mode)
1091
for file, content in files:
1092
control_files.put(file, content)
1094
control_files.unlock()
1095
return self.open(a_bzrdir, _found=True)
1097
def _get_control_store(self, repo_transport, control_files):
1098
"""Return the control store for this repository."""
1099
return self._get_versioned_file_store('',
1104
def _get_text_store(self, transport, control_files):
1105
"""Get a store for file texts for this format."""
1106
raise NotImplementedError(self._get_text_store)
1108
def open(self, a_bzrdir, _found=False):
1109
"""See RepositoryFormat.open()."""
1111
# we are being called directly and must probe.
1112
raise NotImplementedError
1114
repo_transport = a_bzrdir.get_repository_transport(None)
1115
control_files = a_bzrdir._control_files
1116
text_store = self._get_text_store(repo_transport, control_files)
1117
control_store = self._get_control_store(repo_transport, control_files)
1118
_revision_store = self._get_revision_store(repo_transport, control_files)
1119
return AllInOneRepository(_format=self,
1121
_revision_store=_revision_store,
1122
control_store=control_store,
1123
text_store=text_store)
1126
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1127
"""Bzr repository format 4.
1129
This repository format has:
1131
- TextStores for texts, inventories,revisions.
1133
This format is deprecated: it indexes texts using a text id which is
1134
removed in format 5; initialization and write support for this format
1139
super(RepositoryFormat4, self).__init__()
1140
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat4()
1142
def get_format_description(self):
1143
"""See RepositoryFormat.get_format_description()."""
1144
return "Repository format 4"
1146
def initialize(self, url, shared=False, _internal=False):
1147
"""Format 4 branches cannot be created."""
1148
raise errors.UninitializableFormat(self)
1150
def is_supported(self):
1151
"""Format 4 is not supported.
1153
It is not supported because the model changed from 4 to 5 and the
1154
conversion logic is expensive - so doing it on the fly was not
1159
def _get_control_store(self, repo_transport, control_files):
1160
"""Format 4 repositories have no formal control store at this point.
1162
This will cause any control-file-needing apis to fail - this is desired.
1166
def _get_revision_store(self, repo_transport, control_files):
1167
"""See RepositoryFormat._get_revision_store()."""
1168
from bzrlib.xml4 import serializer_v4
1169
return self._get_text_rev_store(repo_transport,
1172
serializer=serializer_v4)
1174
def _get_text_store(self, transport, control_files):
1175
"""See RepositoryFormat._get_text_store()."""
1178
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1179
"""Bzr control format 5.
1181
This repository format has:
1182
- weaves for file texts and inventory
1184
- TextStores for revisions and signatures.
1188
super(RepositoryFormat5, self).__init__()
1189
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat5()
1191
def get_format_description(self):
1192
"""See RepositoryFormat.get_format_description()."""
1193
return "Weave repository format 5"
1195
def _get_revision_store(self, repo_transport, control_files):
1196
"""See RepositoryFormat._get_revision_store()."""
1197
"""Return the revision store object for this a_bzrdir."""
1198
return self._get_text_rev_store(repo_transport,
1203
def _get_text_store(self, transport, control_files):
1204
"""See RepositoryFormat._get_text_store()."""
1205
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1208
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1209
"""Bzr control format 6.
1211
This repository format has:
1212
- weaves for file texts and inventory
1213
- hash subdirectory based stores.
1214
- TextStores for revisions and signatures.
1218
super(RepositoryFormat6, self).__init__()
1219
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat6()
1221
def get_format_description(self):
1222
"""See RepositoryFormat.get_format_description()."""
1223
return "Weave repository format 6"
1225
def _get_revision_store(self, repo_transport, control_files):
1226
"""See RepositoryFormat._get_revision_store()."""
1227
return self._get_text_rev_store(repo_transport,
1233
def _get_text_store(self, transport, control_files):
1234
"""See RepositoryFormat._get_text_store()."""
1235
return self._get_versioned_file_store('weaves', transport, control_files)
3191
1238
class MetaDirRepositoryFormat(RepositoryFormat):
3192
1239
"""Common base class for the new repositories using the metadir layout."""
3194
rich_root_data = False
3195
supports_tree_reference = False
3196
supports_external_lookups = False
3199
def _matchingbzrdir(self):
3200
matching = bzrdir.BzrDirMetaFormat1()
3201
matching.repository_format = self
3204
1241
def __init__(self):
3205
1242
super(MetaDirRepositoryFormat, self).__init__()
1243
self._matchingbzrdir = bzrlib.bzrdir.BzrDirMetaFormat1()
3207
1245
def _create_control_files(self, a_bzrdir):
3208
1246
"""Create the required files and the initial control_files object."""
3209
1247
# FIXME: RBC 20060125 don't peek under the covers
3210
1248
# NB: no need to escape relative paths that are url safe.
3211
1249
repository_transport = a_bzrdir.get_repository_transport(self)
3212
control_files = lockable_files.LockableFiles(repository_transport,
3213
'lock', lockdir.LockDir)
1250
control_files = LockableFiles(repository_transport, 'lock', LockDir)
3214
1251
control_files.create_lock()
3215
1252
return control_files
3218
1255
"""Upload the initial blank content."""
3219
1256
control_files = self._create_control_files(a_bzrdir)
3220
1257
control_files.lock_write()
3221
transport = control_files._transport
3223
utf8_files += [('shared-storage', '')]
3225
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
3226
for (filename, content_stream) in files:
3227
transport.put_file(filename, content_stream,
3228
mode=a_bzrdir._get_file_mode())
3229
for (filename, content_bytes) in utf8_files:
3230
transport.put_bytes_non_atomic(filename, content_bytes,
3231
mode=a_bzrdir._get_file_mode())
1259
control_files._transport.mkdir_multi(dirs,
1260
mode=control_files._dir_mode)
1261
for file, content in files:
1262
control_files.put(file, content)
1263
for file, content in utf8_files:
1264
control_files.put_utf8(file, content)
1266
control_files.put_utf8('shared-storage', '')
3233
1268
control_files.unlock()
3235
def network_name(self):
3236
"""Metadir formats have matching disk and network format strings."""
3237
return self.get_format_string()
3240
# Pre-0.8 formats that don't have a disk format string (because they are
3241
# versioned by the matching control directory). We use the control directories
3242
# disk format string as a key for the network_name because they meet the
3243
# constraints (simple string, unique, immutable).
3244
network_format_registry.register_lazy(
3245
"Bazaar-NG branch, format 5\n",
3246
'bzrlib.repofmt.weaverepo',
3247
'RepositoryFormat5',
3249
network_format_registry.register_lazy(
3250
"Bazaar-NG branch, format 6\n",
3251
'bzrlib.repofmt.weaverepo',
3252
'RepositoryFormat6',
3255
# formats which have no format string are not discoverable or independently
3256
# creatable on disk, so are not registered in format_registry. They're
3257
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
3258
# needed, it's constructed directly by the BzrDir. Non-native formats where
3259
# the repository is not separately opened are similar.
3261
format_registry.register_lazy(
3262
'Bazaar-NG Repository format 7',
3263
'bzrlib.repofmt.weaverepo',
3267
format_registry.register_lazy(
3268
'Bazaar-NG Knit Repository Format 1',
3269
'bzrlib.repofmt.knitrepo',
3270
'RepositoryFormatKnit1',
3273
format_registry.register_lazy(
3274
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
3275
'bzrlib.repofmt.knitrepo',
3276
'RepositoryFormatKnit3',
3279
format_registry.register_lazy(
3280
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
3281
'bzrlib.repofmt.knitrepo',
3282
'RepositoryFormatKnit4',
3285
# Pack-based formats. There is one format for pre-subtrees, and one for
3286
# post-subtrees to allow ease of testing.
3287
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
3288
format_registry.register_lazy(
3289
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
3290
'bzrlib.repofmt.pack_repo',
3291
'RepositoryFormatKnitPack1',
3293
format_registry.register_lazy(
3294
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
3295
'bzrlib.repofmt.pack_repo',
3296
'RepositoryFormatKnitPack3',
3298
format_registry.register_lazy(
3299
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
3300
'bzrlib.repofmt.pack_repo',
3301
'RepositoryFormatKnitPack4',
3303
format_registry.register_lazy(
3304
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
3305
'bzrlib.repofmt.pack_repo',
3306
'RepositoryFormatKnitPack5',
3308
format_registry.register_lazy(
3309
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
3310
'bzrlib.repofmt.pack_repo',
3311
'RepositoryFormatKnitPack5RichRoot',
3313
format_registry.register_lazy(
3314
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
3315
'bzrlib.repofmt.pack_repo',
3316
'RepositoryFormatKnitPack5RichRootBroken',
3318
format_registry.register_lazy(
3319
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
3320
'bzrlib.repofmt.pack_repo',
3321
'RepositoryFormatKnitPack6',
3323
format_registry.register_lazy(
3324
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
3325
'bzrlib.repofmt.pack_repo',
3326
'RepositoryFormatKnitPack6RichRoot',
3329
# Development formats.
3330
# Obsolete but kept pending a CHK based subtree format.
3331
format_registry.register_lazy(
3332
("Bazaar development format 2 with subtree support "
3333
"(needs bzr.dev from before 1.8)\n"),
3334
'bzrlib.repofmt.pack_repo',
3335
'RepositoryFormatPackDevelopment2Subtree',
3338
# 1.14->1.16 go below here
3339
format_registry.register_lazy(
3340
'Bazaar development format - group compression and chk inventory'
3341
' (needs bzr.dev from 1.14)\n',
3342
'bzrlib.repofmt.groupcompress_repo',
3343
'RepositoryFormatCHK1',
3346
format_registry.register_lazy(
3347
'Bazaar development format - chk repository with bencode revision '
3348
'serialization (needs bzr.dev from 1.16)\n',
3349
'bzrlib.repofmt.groupcompress_repo',
3350
'RepositoryFormatCHK2',
3352
format_registry.register_lazy(
3353
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
3354
'bzrlib.repofmt.groupcompress_repo',
3355
'RepositoryFormat2a',
1271
class RepositoryFormat7(MetaDirRepositoryFormat):
1272
"""Bzr repository 7.
1274
This repository format has:
1275
- weaves for file texts and inventory
1276
- hash subdirectory based stores.
1277
- TextStores for revisions and signatures.
1278
- a format marker of its own
1279
- an optional 'shared-storage' flag
1280
- an optional 'no-working-trees' flag
1283
def _get_control_store(self, repo_transport, control_files):
1284
"""Return the control store for this repository."""
1285
return self._get_versioned_file_store('',
1290
def get_format_string(self):
1291
"""See RepositoryFormat.get_format_string()."""
1292
return "Bazaar-NG Repository format 7"
1294
def get_format_description(self):
1295
"""See RepositoryFormat.get_format_description()."""
1296
return "Weave repository format 7"
1298
def _get_revision_store(self, repo_transport, control_files):
1299
"""See RepositoryFormat._get_revision_store()."""
1300
return self._get_text_rev_store(repo_transport,
1307
def _get_text_store(self, transport, control_files):
1308
"""See RepositoryFormat._get_text_store()."""
1309
return self._get_versioned_file_store('weaves',
1313
def initialize(self, a_bzrdir, shared=False):
1314
"""Create a weave repository.
1316
:param shared: If true the repository will be initialized as a shared
1319
from bzrlib.weavefile import write_weave_v5
1320
from bzrlib.weave import Weave
1322
# Create an empty weave
1324
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1325
empty_weave = sio.getvalue()
1327
mutter('creating repository in %s.', a_bzrdir.transport.base)
1328
dirs = ['revision-store', 'weaves']
1329
files = [('inventory.weave', StringIO(empty_weave)),
1331
utf8_files = [('format', self.get_format_string())]
1333
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1334
return self.open(a_bzrdir=a_bzrdir, _found=True)
1336
def open(self, a_bzrdir, _found=False, _override_transport=None):
1337
"""See RepositoryFormat.open().
1339
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1340
repository at a slightly different url
1341
than normal. I.e. during 'upgrade'.
1344
format = RepositoryFormat.find_format(a_bzrdir)
1345
assert format.__class__ == self.__class__
1346
if _override_transport is not None:
1347
repo_transport = _override_transport
1349
repo_transport = a_bzrdir.get_repository_transport(None)
1350
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1351
text_store = self._get_text_store(repo_transport, control_files)
1352
control_store = self._get_control_store(repo_transport, control_files)
1353
_revision_store = self._get_revision_store(repo_transport, control_files)
1354
return MetaDirRepository(_format=self,
1356
control_files=control_files,
1357
_revision_store=_revision_store,
1358
control_store=control_store,
1359
text_store=text_store)
1362
class RepositoryFormatKnit1(MetaDirRepositoryFormat):
1363
"""Bzr repository knit format 1.
1365
This repository format has:
1366
- knits for file texts and inventory
1367
- hash subdirectory based stores.
1368
- knits for revisions and signatures
1369
- TextStores for revisions and signatures.
1370
- a format marker of its own
1371
- an optional 'shared-storage' flag
1372
- an optional 'no-working-trees' flag
1375
This format was introduced in bzr 0.8.
1378
def _get_control_store(self, repo_transport, control_files):
1379
"""Return the control store for this repository."""
1380
return VersionedFileStore(
1383
file_mode=control_files._file_mode,
1384
versionedfile_class=KnitVersionedFile,
1385
versionedfile_kwargs={'factory':KnitPlainFactory()},
1388
def get_format_string(self):
1389
"""See RepositoryFormat.get_format_string()."""
1390
return "Bazaar-NG Knit Repository Format 1"
1392
def get_format_description(self):
1393
"""See RepositoryFormat.get_format_description()."""
1394
return "Knit repository format 1"
1396
def _get_revision_store(self, repo_transport, control_files):
1397
"""See RepositoryFormat._get_revision_store()."""
1398
from bzrlib.store.revision.knit import KnitRevisionStore
1399
versioned_file_store = VersionedFileStore(
1401
file_mode=control_files._file_mode,
1404
versionedfile_class=KnitVersionedFile,
1405
versionedfile_kwargs={'delta':False, 'factory':KnitPlainFactory()},
1408
return KnitRevisionStore(versioned_file_store)
1410
def _get_text_store(self, transport, control_files):
1411
"""See RepositoryFormat._get_text_store()."""
1412
return self._get_versioned_file_store('knits',
1415
versionedfile_class=KnitVersionedFile,
1418
def initialize(self, a_bzrdir, shared=False):
1419
"""Create a knit format 1 repository.
1421
:param a_bzrdir: bzrdir to contain the new repository; must already
1423
:param shared: If true the repository will be initialized as a shared
1426
mutter('creating repository in %s.', a_bzrdir.transport.base)
1427
dirs = ['revision-store', 'knits']
1429
utf8_files = [('format', self.get_format_string())]
1431
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1432
repo_transport = a_bzrdir.get_repository_transport(None)
1433
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1434
control_store = self._get_control_store(repo_transport, control_files)
1435
transaction = bzrlib.transactions.WriteTransaction()
1436
# trigger a write of the inventory store.
1437
control_store.get_weave_or_empty('inventory', transaction)
1438
_revision_store = self._get_revision_store(repo_transport, control_files)
1439
_revision_store.has_revision_id('A', transaction)
1440
_revision_store.get_signature_file(transaction)
1441
return self.open(a_bzrdir=a_bzrdir, _found=True)
1443
def open(self, a_bzrdir, _found=False, _override_transport=None):
1444
"""See RepositoryFormat.open().
1446
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1447
repository at a slightly different url
1448
than normal. I.e. during 'upgrade'.
1451
format = RepositoryFormat.find_format(a_bzrdir)
1452
assert format.__class__ == self.__class__
1453
if _override_transport is not None:
1454
repo_transport = _override_transport
1456
repo_transport = a_bzrdir.get_repository_transport(None)
1457
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1458
text_store = self._get_text_store(repo_transport, control_files)
1459
control_store = self._get_control_store(repo_transport, control_files)
1460
_revision_store = self._get_revision_store(repo_transport, control_files)
1461
return KnitRepository(_format=self,
1463
control_files=control_files,
1464
_revision_store=_revision_store,
1465
control_store=control_store,
1466
text_store=text_store)
1469
# formats which have no format string are not discoverable
1470
# and not independently creatable, so are not registered.
1471
RepositoryFormat.register_format(RepositoryFormat7())
1472
_default_format = RepositoryFormatKnit1()
1473
RepositoryFormat.register_format(_default_format)
1474
RepositoryFormat.set_default_format(_default_format)
1475
_legacy_formats = [RepositoryFormat4(),
1476
RepositoryFormat5(),
1477
RepositoryFormat6()]
3359
1480
class InterRepository(InterObject):
3360
1481
"""This class represents operations taking place between two repositories.
3362
1483
Its instances have methods like copy_content and fetch, and contain
3363
references to the source and target repositories these operations can be
1484
references to the source and target repositories these operations can be
3364
1485
carried out on.
3366
1487
Often we will provide convenience methods on 'repository' which carry out
3368
1489
InterRepository.get(other).method_name(parameters).
3371
_walk_to_common_revisions_batch_size = 50
3373
1493
"""The available optimised InterRepository types."""
3375
1495
@needs_write_lock
3376
def copy_content(self, revision_id=None):
1496
def copy_content(self, revision_id=None, basis=None):
3377
1497
"""Make a complete copy of the content in self into destination.
3379
This is a destructive operation! Do not use it on existing
1499
This is a destructive operation! Do not use it on existing
3382
1502
:param revision_id: Only copy the content needed to construct
3383
1503
revision_id and its parents.
1504
:param basis: Copy the needed data preferentially from basis.
3386
1507
self.target.set_make_working_trees(self.source.make_working_trees())
3387
1508
except NotImplementedError:
1510
# grab the basis available data
1511
if basis is not None:
1512
self.target.fetch(basis, revision_id=revision_id)
1513
# but don't bother fetching if we have the needed data now.
1514
if (revision_id not in (None, NULL_REVISION) and
1515
self.target.has_revision(revision_id)):
3389
1517
self.target.fetch(self.source, revision_id=revision_id)
1519
def _double_lock(self, lock_source, lock_target):
1520
"""Take out too locks, rolling back the first if the second throws."""
1525
# we want to ensure that we don't leave source locked by mistake.
1526
# and any error on target should not confuse source.
1527
self.source.unlock()
3391
1530
@needs_write_lock
3392
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
1531
def fetch(self, revision_id=None, pb=None):
3394
1532
"""Fetch the content required to construct revision_id.
3396
The content is copied from self.source to self.target.
1534
The content is copied from source to target.
3398
1536
:param revision_id: if None all content is copied, if NULL_REVISION no
3399
1537
content is copied.
1538
:param pb: optional progress bar to use for progress reports. If not
1539
provided a default one will be created.
1541
Returns the copied revision count and the failed revisions in a tuple:
3403
ui.ui_factory.warn_experimental_format_fetch(self)
3404
from bzrlib.fetch import RepoFetcher
3405
# See <https://launchpad.net/bugs/456077> asking for a warning here
3406
if self.source._format.network_name() != self.target._format.network_name():
3407
ui.ui_factory.show_user_warning('cross_format_fetch',
3408
from_format=self.source._format,
3409
to_format=self.target._format)
3410
f = RepoFetcher(to_repository=self.target,
1544
from bzrlib.fetch import GenericRepoFetcher
1545
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1546
self.source, self.source._format, self.target, self.target._format)
1547
f = GenericRepoFetcher(to_repository=self.target,
3411
1548
from_repository=self.source,
3412
1549
last_revision=revision_id,
3413
fetch_spec=fetch_spec,
3414
find_ghosts=find_ghosts)
3416
def _walk_to_common_revisions(self, revision_ids):
3417
"""Walk out from revision_ids in source to revisions target has.
3419
:param revision_ids: The start point for the search.
3420
:return: A set of revision ids.
3422
target_graph = self.target.get_graph()
3423
revision_ids = frozenset(revision_ids)
3424
missing_revs = set()
3425
source_graph = self.source.get_graph()
3426
# ensure we don't pay silly lookup costs.
3427
searcher = source_graph._make_breadth_first_searcher(revision_ids)
3428
null_set = frozenset([_mod_revision.NULL_REVISION])
3429
searcher_exhausted = False
3433
# Iterate the searcher until we have enough next_revs
3434
while len(next_revs) < self._walk_to_common_revisions_batch_size:
3436
next_revs_part, ghosts_part = searcher.next_with_ghosts()
3437
next_revs.update(next_revs_part)
3438
ghosts.update(ghosts_part)
3439
except StopIteration:
3440
searcher_exhausted = True
3442
# If there are ghosts in the source graph, and the caller asked for
3443
# them, make sure that they are present in the target.
3444
# We don't care about other ghosts as we can't fetch them and
3445
# haven't been asked to.
3446
ghosts_to_check = set(revision_ids.intersection(ghosts))
3447
revs_to_get = set(next_revs).union(ghosts_to_check)
3449
have_revs = set(target_graph.get_parent_map(revs_to_get))
3450
# we always have NULL_REVISION present.
3451
have_revs = have_revs.union(null_set)
3452
# Check if the target is missing any ghosts we need.
3453
ghosts_to_check.difference_update(have_revs)
3455
# One of the caller's revision_ids is a ghost in both the
3456
# source and the target.
3457
raise errors.NoSuchRevision(
3458
self.source, ghosts_to_check.pop())
3459
missing_revs.update(next_revs - have_revs)
3460
# Because we may have walked past the original stop point, make
3461
# sure everything is stopped
3462
stop_revs = searcher.find_seen_ancestors(have_revs)
3463
searcher.stop_searching_any(stop_revs)
3464
if searcher_exhausted:
3466
return searcher.get_result()
1551
return f.count_copied, f.failed_revisions
1553
def lock_read(self):
1554
"""Take out a logical read lock.
1556
This will lock the source branch and the target branch. The source gets
1557
a read lock and the target a read lock.
1559
self._double_lock(self.source.lock_read, self.target.lock_read)
1561
def lock_write(self):
1562
"""Take out a logical write lock.
1564
This will lock the source branch and the target branch. The source gets
1565
a read lock and the target a write lock.
1567
self._double_lock(self.source.lock_read, self.target.lock_write)
3468
1569
@needs_read_lock
3469
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1570
def missing_revision_ids(self, revision_id=None):
3470
1571
"""Return the revision ids that source has that target does not.
1573
These are returned in topological order.
3472
1575
:param revision_id: only return revision ids included by this
3474
:param find_ghosts: If True find missing revisions in deep history
3475
rather than just finding the surface difference.
3476
:return: A bzrlib.graph.SearchResult.
3478
# stop searching at found target revisions.
3479
if not find_ghosts and revision_id is not None:
3480
return self._walk_to_common_revisions([revision_id])
3481
1578
# generic, possibly worst case, slow code path.
3482
1579
target_ids = set(self.target.all_revision_ids())
3483
1580
if revision_id is not None:
3484
1581
source_ids = self.source.get_ancestry(revision_id)
3485
if source_ids[0] is not None:
3486
raise AssertionError()
1582
assert source_ids[0] == None
3487
1583
source_ids.pop(0)
3489
1585
source_ids = self.source.all_revision_ids()
3490
1586
result_set = set(source_ids).difference(target_ids)
3491
return self.source.revision_ids_to_search_result(result_set)
3494
def _same_model(source, target):
3495
"""True if source and target have the same data representation.
3497
Note: this is always called on the base class; overriding it in a
3498
subclass will have no effect.
1587
# this may look like a no-op: its not. It preserves the ordering
1588
# other_ids had while only returning the members from other_ids
1589
# that we've decided we need.
1590
return [rev_id for rev_id in source_ids if rev_id in result_set]
1593
"""Release the locks on source and target."""
3501
InterRepository._assert_same_model(source, target)
3503
except errors.IncompatibleRepositories, e:
3507
def _assert_same_model(source, target):
3508
"""Raise an exception if two repositories do not use the same model.
3510
if source.supports_rich_root() != target.supports_rich_root():
3511
raise errors.IncompatibleRepositories(source, target,
3512
"different rich-root support")
3513
if source._serializer != target._serializer:
3514
raise errors.IncompatibleRepositories(source, target,
3515
"different serializers")
3518
class InterSameDataRepository(InterRepository):
3519
"""Code for converting between repositories that represent the same data.
3521
Data format and model must match for this to work.
3525
def _get_repo_format_to_test(self):
3526
"""Repository format for testing with.
3528
InterSameData can pull from subtree to subtree and from non-subtree to
3529
non-subtree, so we test this with the richest repository format.
3531
from bzrlib.repofmt import knitrepo
3532
return knitrepo.RepositoryFormatKnit3()
3535
def is_compatible(source, target):
3536
return InterRepository._same_model(source, target)
3539
class InterWeaveRepo(InterSameDataRepository):
3540
"""Optimised code paths between Weave based repositories.
3542
This should be in bzrlib/repofmt/weaverepo.py but we have not yet
3543
implemented lazy inter-object optimisation.
3547
def _get_repo_format_to_test(self):
3548
from bzrlib.repofmt import weaverepo
3549
return weaverepo.RepositoryFormat7()
1595
self.target.unlock()
1597
self.source.unlock()
1600
class InterWeaveRepo(InterRepository):
1601
"""Optimised code paths between Weave based repositories."""
1603
_matching_repo_format = RepositoryFormat7()
1604
"""Repository format for testing with."""
3552
1607
def is_compatible(source, target):
3553
1608
"""Be compatible with known Weave formats.
3555
1610
We don't test for the stores being of specific types because that
3556
could lead to confusing results, and there is no need to be
1611
could lead to confusing results, and there is no need to be
3557
1612
overly general.
3559
from bzrlib.repofmt.weaverepo import (
3565
1615
return (isinstance(source._format, (RepositoryFormat5,
3566
1616
RepositoryFormat6,
3631
1700
# we do not have a revision as that would be pointless.
3632
1701
target_ids = set(self.target._all_possible_ids())
3633
1702
possibly_present_revisions = target_ids.intersection(source_ids_set)
3634
actually_present_revisions = set(
3635
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1703
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3636
1704
required_revisions = source_ids_set.difference(actually_present_revisions)
1705
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3637
1706
if revision_id is not None:
3638
1707
# we used get_ancestry to determine source_ids then we are assured all
3639
1708
# revisions referenced are present as they are installed in topological order.
3640
1709
# and the tip revision was validated by get_ancestry.
3641
result_set = required_revisions
1710
return required_topo_revisions
3643
# if we just grabbed the possibly available ids, then
1712
# if we just grabbed the possibly available ids, then
3644
1713
# we only have an estimate of whats available and need to validate
3645
1714
# that against the revision records.
3647
self.source._eliminate_revisions_not_present(required_revisions))
3648
return self.source.revision_ids_to_search_result(result_set)
3651
class InterKnitRepo(InterSameDataRepository):
1715
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1718
class InterKnitRepo(InterRepository):
3652
1719
"""Optimised code paths between Knit based repositories."""
3655
def _get_repo_format_to_test(self):
3656
from bzrlib.repofmt import knitrepo
3657
return knitrepo.RepositoryFormatKnit1()
1721
_matching_repo_format = RepositoryFormatKnit1()
1722
"""Repository format for testing with."""
3660
1725
def is_compatible(source, target):
3661
1726
"""Be compatible with known Knit formats.
3663
1728
We don't test for the stores being of specific types because that
3664
could lead to confusing results, and there is no need to be
1729
could lead to confusing results, and there is no need to be
3665
1730
overly general.
3667
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
3669
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
3670
isinstance(target._format, RepositoryFormatKnit))
1733
return (isinstance(source._format, (RepositoryFormatKnit1)) and
1734
isinstance(target._format, (RepositoryFormatKnit1)))
3671
1735
except AttributeError:
3673
return are_knits and InterRepository._same_model(source, target)
1739
def fetch(self, revision_id=None, pb=None):
1740
"""See InterRepository.fetch()."""
1741
from bzrlib.fetch import KnitRepoFetcher
1742
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1743
self.source, self.source._format, self.target, self.target._format)
1744
f = KnitRepoFetcher(to_repository=self.target,
1745
from_repository=self.source,
1746
last_revision=revision_id,
1748
return f.count_copied, f.failed_revisions
3675
1750
@needs_read_lock
3676
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1751
def missing_revision_ids(self, revision_id=None):
3677
1752
"""See InterRepository.missing_revision_ids()."""
3678
1753
if revision_id is not None:
3679
1754
source_ids = self.source.get_ancestry(revision_id)
3680
if source_ids[0] is not None:
3681
raise AssertionError()
1755
assert source_ids[0] == None
3682
1756
source_ids.pop(0)
3684
source_ids = self.source.all_revision_ids()
1758
source_ids = self.source._all_possible_ids()
3685
1759
source_ids_set = set(source_ids)
3686
1760
# source_ids is the worst possible case we may need to pull.
3687
1761
# now we want to filter source_ids against what we actually
3688
1762
# have in target, but don't try to check for existence where we know
3689
1763
# we do not have a revision as that would be pointless.
3690
target_ids = set(self.target.all_revision_ids())
1764
target_ids = set(self.target._all_possible_ids())
3691
1765
possibly_present_revisions = target_ids.intersection(source_ids_set)
3692
actually_present_revisions = set(
3693
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1766
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3694
1767
required_revisions = source_ids_set.difference(actually_present_revisions)
1768
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3695
1769
if revision_id is not None:
3696
1770
# we used get_ancestry to determine source_ids then we are assured all
3697
1771
# revisions referenced are present as they are installed in topological order.
3698
1772
# and the tip revision was validated by get_ancestry.
3699
result_set = required_revisions
1773
return required_topo_revisions
3701
# if we just grabbed the possibly available ids, then
1775
# if we just grabbed the possibly available ids, then
3702
1776
# we only have an estimate of whats available and need to validate
3703
1777
# that against the revision records.
3705
self.source._eliminate_revisions_not_present(required_revisions))
3706
return self.source.revision_ids_to_search_result(result_set)
3709
class InterDifferingSerializer(InterRepository):
3712
def _get_repo_format_to_test(self):
3716
def is_compatible(source, target):
3717
"""Be compatible with Knit2 source and Knit3 target"""
3718
# This is redundant with format.check_conversion_target(), however that
3719
# raises an exception, and we just want to say "False" as in we won't
3720
# support converting between these formats.
3721
if 'IDS_never' in debug.debug_flags:
3723
if source.supports_rich_root() and not target.supports_rich_root():
3725
if (source._format.supports_tree_reference
3726
and not target._format.supports_tree_reference):
3728
if target._fallback_repositories and target._format.supports_chks:
3729
# IDS doesn't know how to copy CHKs for the parent inventories it
3730
# adds to stacked repos.
3732
if 'IDS_always' in debug.debug_flags:
3734
# Only use this code path for local source and target. IDS does far
3735
# too much IO (both bandwidth and roundtrips) over a network.
3736
if not source.bzrdir.transport.base.startswith('file:///'):
3738
if not target.bzrdir.transport.base.startswith('file:///'):
3742
def _get_trees(self, revision_ids, cache):
3744
for rev_id in revision_ids:
3746
possible_trees.append((rev_id, cache[rev_id]))
3748
# Not cached, but inventory might be present anyway.
3750
tree = self.source.revision_tree(rev_id)
3751
except errors.NoSuchRevision:
3752
# Nope, parent is ghost.
3755
cache[rev_id] = tree
3756
possible_trees.append((rev_id, tree))
3757
return possible_trees
3759
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3760
"""Get the best delta and base for this revision.
3762
:return: (basis_id, delta)
3765
# Generate deltas against each tree, to find the shortest.
3766
texts_possibly_new_in_tree = set()
3767
for basis_id, basis_tree in possible_trees:
3768
delta = tree.inventory._make_delta(basis_tree.inventory)
3769
for old_path, new_path, file_id, new_entry in delta:
3770
if new_path is None:
3771
# This file_id isn't present in the new rev, so we don't
3775
# Rich roots are handled elsewhere...
3777
kind = new_entry.kind
3778
if kind != 'directory' and kind != 'file':
3779
# No text record associated with this inventory entry.
3781
# This is a directory or file that has changed somehow.
3782
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3783
deltas.append((len(delta), basis_id, delta))
3785
return deltas[0][1:]
3787
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3788
"""Find all parent revisions that are absent, but for which the
3789
inventory is present, and copy those inventories.
3791
This is necessary to preserve correctness when the source is stacked
3792
without fallbacks configured. (Note that in cases like upgrade the
3793
source may be not have _fallback_repositories even though it is
3797
for parents in parent_map.values():
3798
parent_revs.update(parents)
3799
present_parents = self.source.get_parent_map(parent_revs)
3800
absent_parents = set(parent_revs).difference(present_parents)
3801
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3802
(rev_id,) for rev_id in absent_parents)
3803
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3804
for parent_tree in self.source.revision_trees(parent_inv_ids):
3805
current_revision_id = parent_tree.get_revision_id()
3806
parents_parents_keys = parent_invs_keys_for_stacking[
3807
(current_revision_id,)]
3808
parents_parents = [key[-1] for key in parents_parents_keys]
3809
basis_id = _mod_revision.NULL_REVISION
3810
basis_tree = self.source.revision_tree(basis_id)
3811
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3812
self.target.add_inventory_by_delta(
3813
basis_id, delta, current_revision_id, parents_parents)
3814
cache[current_revision_id] = parent_tree
3816
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3817
"""Fetch across a few revisions.
3819
:param revision_ids: The revisions to copy
3820
:param basis_id: The revision_id of a tree that must be in cache, used
3821
as a basis for delta when no other base is available
3822
:param cache: A cache of RevisionTrees that we can use.
3823
:param a_graph: A Graph object to determine the heads() of the
3824
rich-root data stream.
3825
:return: The revision_id of the last converted tree. The RevisionTree
3826
for it will be in cache
3828
# Walk though all revisions; get inventory deltas, copy referenced
3829
# texts that delta references, insert the delta, revision and
3831
root_keys_to_create = set()
3834
pending_revisions = []
3835
parent_map = self.source.get_parent_map(revision_ids)
3836
self._fetch_parent_invs_for_stacking(parent_map, cache)
3837
self.source._safe_to_return_from_cache = True
3838
for tree in self.source.revision_trees(revision_ids):
3839
# Find a inventory delta for this revision.
3840
# Find text entries that need to be copied, too.
3841
current_revision_id = tree.get_revision_id()
3842
parent_ids = parent_map.get(current_revision_id, ())
3843
parent_trees = self._get_trees(parent_ids, cache)
3844
possible_trees = list(parent_trees)
3845
if len(possible_trees) == 0:
3846
# There either aren't any parents, or the parents are ghosts,
3847
# so just use the last converted tree.
3848
possible_trees.append((basis_id, cache[basis_id]))
3849
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3851
revision = self.source.get_revision(current_revision_id)
3852
pending_deltas.append((basis_id, delta,
3853
current_revision_id, revision.parent_ids))
3854
if self._converting_to_rich_root:
3855
self._revision_id_to_root_id[current_revision_id] = \
3857
# Determine which texts are in present in this revision but not in
3858
# any of the available parents.
3859
texts_possibly_new_in_tree = set()
3860
for old_path, new_path, file_id, entry in delta:
3861
if new_path is None:
3862
# This file_id isn't present in the new rev
3866
if not self.target.supports_rich_root():
3867
# The target doesn't support rich root, so we don't
3870
if self._converting_to_rich_root:
3871
# This can't be copied normally, we have to insert
3873
root_keys_to_create.add((file_id, entry.revision))
3876
texts_possibly_new_in_tree.add((file_id, entry.revision))
3877
for basis_id, basis_tree in possible_trees:
3878
basis_inv = basis_tree.inventory
3879
for file_key in list(texts_possibly_new_in_tree):
3880
file_id, file_revision = file_key
3882
entry = basis_inv[file_id]
3883
except errors.NoSuchId:
3885
if entry.revision == file_revision:
3886
texts_possibly_new_in_tree.remove(file_key)
3887
text_keys.update(texts_possibly_new_in_tree)
3888
pending_revisions.append(revision)
3889
cache[current_revision_id] = tree
3890
basis_id = current_revision_id
3891
self.source._safe_to_return_from_cache = False
3893
from_texts = self.source.texts
3894
to_texts = self.target.texts
3895
if root_keys_to_create:
3896
root_stream = _mod_fetch._new_root_data_stream(
3897
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3898
self.source, graph=a_graph)
3899
to_texts.insert_record_stream(root_stream)
3900
to_texts.insert_record_stream(from_texts.get_record_stream(
3901
text_keys, self.target._format._fetch_order,
3902
not self.target._format._fetch_uses_deltas))
3903
# insert inventory deltas
3904
for delta in pending_deltas:
3905
self.target.add_inventory_by_delta(*delta)
3906
if self.target._fallback_repositories:
3907
# Make sure this stacked repository has all the parent inventories
3908
# for the new revisions that we are about to insert. We do this
3909
# before adding the revisions so that no revision is added until
3910
# all the inventories it may depend on are added.
3911
# Note that this is overzealous, as we may have fetched these in an
3914
revision_ids = set()
3915
for revision in pending_revisions:
3916
revision_ids.add(revision.revision_id)
3917
parent_ids.update(revision.parent_ids)
3918
parent_ids.difference_update(revision_ids)
3919
parent_ids.discard(_mod_revision.NULL_REVISION)
3920
parent_map = self.source.get_parent_map(parent_ids)
3921
# we iterate over parent_map and not parent_ids because we don't
3922
# want to try copying any revision which is a ghost
3923
for parent_tree in self.source.revision_trees(parent_map):
3924
current_revision_id = parent_tree.get_revision_id()
3925
parents_parents = parent_map[current_revision_id]
3926
possible_trees = self._get_trees(parents_parents, cache)
3927
if len(possible_trees) == 0:
3928
# There either aren't any parents, or the parents are
3929
# ghosts, so just use the last converted tree.
3930
possible_trees.append((basis_id, cache[basis_id]))
3931
basis_id, delta = self._get_delta_for_revision(parent_tree,
3932
parents_parents, possible_trees)
3933
self.target.add_inventory_by_delta(
3934
basis_id, delta, current_revision_id, parents_parents)
3935
# insert signatures and revisions
3936
for revision in pending_revisions:
3938
signature = self.source.get_signature_text(
3939
revision.revision_id)
3940
self.target.add_signature_text(revision.revision_id,
3942
except errors.NoSuchRevision:
3944
self.target.add_revision(revision.revision_id, revision)
3947
def _fetch_all_revisions(self, revision_ids, pb):
3948
"""Fetch everything for the list of revisions.
3950
:param revision_ids: The list of revisions to fetch. Must be in
3952
:param pb: A ProgressTask
3955
basis_id, basis_tree = self._get_basis(revision_ids[0])
3957
cache = lru_cache.LRUCache(100)
3958
cache[basis_id] = basis_tree
3959
del basis_tree # We don't want to hang on to it here
3961
if self._converting_to_rich_root and len(revision_ids) > 100:
3962
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3967
for offset in range(0, len(revision_ids), batch_size):
3968
self.target.start_write_group()
3970
pb.update('Transferring revisions', offset,
3972
batch = revision_ids[offset:offset+batch_size]
3973
basis_id = self._fetch_batch(batch, basis_id, cache,
3976
self.source._safe_to_return_from_cache = False
3977
self.target.abort_write_group()
3980
hint = self.target.commit_write_group()
3983
if hints and self.target._format.pack_compresses:
3984
self.target.pack(hint=hints)
3985
pb.update('Transferring revisions', len(revision_ids),
3989
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
3991
"""See InterRepository.fetch()."""
3992
if fetch_spec is not None:
3993
raise AssertionError("Not implemented yet...")
3994
ui.ui_factory.warn_experimental_format_fetch(self)
3995
if (not self.source.supports_rich_root()
3996
and self.target.supports_rich_root()):
3997
self._converting_to_rich_root = True
3998
self._revision_id_to_root_id = {}
4000
self._converting_to_rich_root = False
4001
# See <https://launchpad.net/bugs/456077> asking for a warning here
4002
if self.source._format.network_name() != self.target._format.network_name():
4003
ui.ui_factory.show_user_warning('cross_format_fetch',
4004
from_format=self.source._format,
4005
to_format=self.target._format)
4006
revision_ids = self.target.search_missing_revision_ids(self.source,
4007
revision_id, find_ghosts=find_ghosts).get_keys()
4008
if not revision_ids:
4010
revision_ids = tsort.topo_sort(
4011
self.source.get_graph().get_parent_map(revision_ids))
4012
if not revision_ids:
4014
# Walk though all revisions; get inventory deltas, copy referenced
4015
# texts that delta references, insert the delta, revision and
4018
my_pb = ui.ui_factory.nested_progress_bar()
4021
symbol_versioning.warn(
4022
symbol_versioning.deprecated_in((1, 14, 0))
4023
% "pb parameter to fetch()")
4026
self._fetch_all_revisions(revision_ids, pb)
4028
if my_pb is not None:
4030
return len(revision_ids), 0
4032
def _get_basis(self, first_revision_id):
4033
"""Get a revision and tree which exists in the target.
4035
This assumes that first_revision_id is selected for transmission
4036
because all other ancestors are already present. If we can't find an
4037
ancestor we fall back to NULL_REVISION since we know that is safe.
4039
:return: (basis_id, basis_tree)
4041
first_rev = self.source.get_revision(first_revision_id)
4043
basis_id = first_rev.parent_ids[0]
4044
# only valid as a basis if the target has it
4045
self.target.get_revision(basis_id)
4046
# Try to get a basis tree - if its a ghost it will hit the
4047
# NoSuchRevision case.
4048
basis_tree = self.source.revision_tree(basis_id)
4049
except (IndexError, errors.NoSuchRevision):
4050
basis_id = _mod_revision.NULL_REVISION
4051
basis_tree = self.source.revision_tree(basis_id)
4052
return basis_id, basis_tree
4055
InterRepository.register_optimiser(InterDifferingSerializer)
4056
InterRepository.register_optimiser(InterSameDataRepository)
1778
return self.source._eliminate_revisions_not_present(required_topo_revisions)
4057
1780
InterRepository.register_optimiser(InterWeaveRepo)
4058
1781
InterRepository.register_optimiser(InterKnitRepo)
1784
class RepositoryTestProviderAdapter(object):
1785
"""A tool to generate a suite testing multiple repository formats at once.
1787
This is done by copying the test once for each transport and injecting
1788
the transport_server, transport_readonly_server, and bzrdir_format and
1789
repository_format classes into each copy. Each copy is also given a new id()
1790
to make it easy to identify.
1793
def __init__(self, transport_server, transport_readonly_server, formats):
1794
self._transport_server = transport_server
1795
self._transport_readonly_server = transport_readonly_server
1796
self._formats = formats
1798
def adapt(self, test):
1799
result = TestSuite()
1800
for repository_format, bzrdir_format in self._formats:
1801
new_test = deepcopy(test)
1802
new_test.transport_server = self._transport_server
1803
new_test.transport_readonly_server = self._transport_readonly_server
1804
new_test.bzrdir_format = bzrdir_format
1805
new_test.repository_format = repository_format
1806
def make_new_test_id():
1807
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
1808
return lambda: new_id
1809
new_test.id = make_new_test_id()
1810
result.addTest(new_test)
1814
class InterRepositoryTestProviderAdapter(object):
1815
"""A tool to generate a suite testing multiple inter repository formats.
1817
This is done by copying the test once for each interrepo provider and injecting
1818
the transport_server, transport_readonly_server, repository_format and
1819
repository_to_format classes into each copy.
1820
Each copy is also given a new id() to make it easy to identify.
1823
def __init__(self, transport_server, transport_readonly_server, formats):
1824
self._transport_server = transport_server
1825
self._transport_readonly_server = transport_readonly_server
1826
self._formats = formats
1828
def adapt(self, test):
1829
result = TestSuite()
1830
for interrepo_class, repository_format, repository_format_to in self._formats:
1831
new_test = deepcopy(test)
1832
new_test.transport_server = self._transport_server
1833
new_test.transport_readonly_server = self._transport_readonly_server
1834
new_test.interrepo_class = interrepo_class
1835
new_test.repository_format = repository_format
1836
new_test.repository_format_to = repository_format_to
1837
def make_new_test_id():
1838
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
1839
return lambda: new_id
1840
new_test.id = make_new_test_id()
1841
result.addTest(new_test)
1845
def default_test_list():
1846
"""Generate the default list of interrepo permutations to test."""
1848
# test the default InterRepository between format 6 and the current
1850
# XXX: robertc 20060220 reinstate this when there are two supported
1851
# formats which do not have an optimal code path between them.
1852
result.append((InterRepository,
1853
RepositoryFormat6(),
1854
RepositoryFormatKnit1()))
1855
for optimiser in InterRepository._optimisers:
1856
result.append((optimiser,
1857
optimiser._matching_repo_format,
1858
optimiser._matching_repo_format
1860
# if there are specific combinations we want to use, we can add them
4061
1865
class CopyConverter(object):
4062
1866
"""A repository conversion tool which just performs a copy of the content.
4064
1868
This is slow but quite reliable.
4070
1874
:param target_format: The format the resulting repository should be.
4072
1876
self.target_format = target_format
4074
1878
def convert(self, repo, pb):
4075
1879
"""Perform the conversion of to_convert, giving feedback via pb.
4077
1881
:param to_convert: The disk object to convert.
4078
1882
:param pb: a progress bar to use for progress information.
4080
pb = ui.ui_factory.nested_progress_bar()
4083
1887
# this is only useful with metadir layouts - separated repo content.
4084
1888
# trigger an assertion if not such
4085
1889
repo._format.get_format_string()
4086
1890
self.repo_dir = repo.bzrdir
4087
pb.update('Moving repository to repository.backup')
1891
self.step('Moving repository to repository.backup')
4088
1892
self.repo_dir.transport.move('repository', 'repository.backup')
4089
1893
backup_transport = self.repo_dir.transport.clone('repository.backup')
4090
repo._format.check_conversion_target(self.target_format)
4091
1894
self.source_repo = repo._format.open(self.repo_dir,
4093
1896
_override_transport=backup_transport)
4094
pb.update('Creating new repository')
1897
self.step('Creating new repository')
4095
1898
converted = self.target_format.initialize(self.repo_dir,
4096
1899
self.source_repo.is_shared())
4097
1900
converted.lock_write()
4099
pb.update('Copying content')
1902
self.step('Copying content into repository.')
4100
1903
self.source_repo.copy_content_into(converted)
4102
1905
converted.unlock()
4103
pb.update('Deleting old repository content')
1906
self.step('Deleting old repository content.')
4104
1907
self.repo_dir.transport.delete_tree('repository.backup')
4105
ui.ui_factory.note('repository converted')
4118
def _unescaper(match, _map=_unescape_map):
4119
code = match.group(1)
4123
if not code.startswith('#'):
4125
return unichr(int(code[1:])).encode('utf8')
1908
self.pb.note('repository converted')
1910
def step(self, message):
1911
"""Update the pb by a step."""
1913
self.pb.update(message, self.count, self.total)
1916
class CommitBuilder(object):
1917
"""Provides an interface to build up a commit.
1919
This allows describing a tree to be committed without needing to
1920
know the internals of the format of the repository.
1922
def __init__(self, repository, parents, config, timestamp=None,
1923
timezone=None, committer=None, revprops=None,
1925
"""Initiate a CommitBuilder.
1927
:param repository: Repository to commit to.
1928
:param parents: Revision ids of the parents of the new revision.
1929
:param config: Configuration to use.
1930
:param timestamp: Optional timestamp recorded for commit.
1931
:param timezone: Optional timezone for timestamp.
1932
:param committer: Optional committer to set for commit.
1933
:param revprops: Optional dictionary of revision properties.
1934
:param revision_id: Optional revision id.
1936
self._config = config
1938
if committer is None:
1939
self._committer = self._config.username()
1941
assert isinstance(committer, basestring), type(committer)
1942
self._committer = committer
1944
self.new_inventory = Inventory()
1945
self._new_revision_id = revision_id
1946
self.parents = parents
1947
self.repository = repository
1950
if revprops is not None:
1951
self._revprops.update(revprops)
1953
if timestamp is None:
1954
self._timestamp = time.time()
1956
self._timestamp = long(timestamp)
1958
if timezone is None:
1959
self._timezone = local_time_offset()
1961
self._timezone = int(timezone)
1963
self._generate_revision_if_needed()
1965
def commit(self, message):
1966
"""Make the actual commit.
1968
:return: The revision id of the recorded revision.
1970
rev = Revision(timestamp=self._timestamp,
1971
timezone=self._timezone,
1972
committer=self._committer,
1974
inventory_sha1=self.inv_sha1,
1975
revision_id=self._new_revision_id,
1976
properties=self._revprops)
1977
rev.parent_ids = self.parents
1978
self.repository.add_revision(self._new_revision_id, rev,
1979
self.new_inventory, self._config)
1980
return self._new_revision_id
1982
def finish_inventory(self):
1983
"""Tell the builder that the inventory is finished."""
1984
self.new_inventory.revision_id = self._new_revision_id
1985
self.inv_sha1 = self.repository.add_inventory(
1986
self._new_revision_id,
1991
def _gen_revision_id(self):
1992
"""Return new revision-id."""
1993
s = '%s-%s-' % (self._config.user_email(),
1994
compact_date(self._timestamp))
1995
s += hexlify(rand_bytes(8))
1998
def _generate_revision_if_needed(self):
1999
"""Create a revision id if None was supplied.
2001
If the repository can not support user-specified revision ids
2002
they should override this function and raise UnsupportedOperation
2003
if _new_revision_id is not None.
2005
:raises: UnsupportedOperation
2007
if self._new_revision_id is None:
2008
self._new_revision_id = self._gen_revision_id()
2010
def record_entry_contents(self, ie, parent_invs, path, tree):
2011
"""Record the content of ie from tree into the commit if needed.
2013
:param ie: An inventory entry present in the commit.
2014
:param parent_invs: The inventories of the parent revisions of the
2016
:param path: The path the entry is at in the tree.
2017
:param tree: The tree which contains this entry and should be used to
2020
self.new_inventory.add(ie)
2022
# ie.revision is always None if the InventoryEntry is considered
2023
# for committing. ie.snapshot will record the correct revision
2024
# which may be the sole parent if it is untouched.
2025
if ie.revision is not None:
2027
previous_entries = ie.find_previous_heads(
2029
self.repository.weave_store,
2030
self.repository.get_transaction())
2031
# we are creating a new revision for ie in the history store
2033
ie.snapshot(self._new_revision_id, path, previous_entries, tree, self)
2035
def modified_directory(self, file_id, file_parents):
2036
"""Record the presence of a symbolic link.
2038
:param file_id: The file_id of the link to record.
2039
:param file_parents: The per-file parent revision ids.
2041
self._add_text_to_weave(file_id, [], file_parents.keys())
2043
def modified_file_text(self, file_id, file_parents,
2044
get_content_byte_lines, text_sha1=None,
2046
"""Record the text of file file_id
2048
:param file_id: The file_id of the file to record the text of.
2049
:param file_parents: The per-file parent revision ids.
2050
:param get_content_byte_lines: A callable which will return the byte
2052
:param text_sha1: Optional SHA1 of the file contents.
2053
:param text_size: Optional size of the file contents.
2055
mutter('storing text of file {%s} in revision {%s} into %r',
2056
file_id, self._new_revision_id, self.repository.weave_store)
2057
# special case to avoid diffing on renames or
2059
if (len(file_parents) == 1
2060
and text_sha1 == file_parents.values()[0].text_sha1
2061
and text_size == file_parents.values()[0].text_size):
2062
previous_ie = file_parents.values()[0]
2063
versionedfile = self.repository.weave_store.get_weave(file_id,
2064
self.repository.get_transaction())
2065
versionedfile.clone_text(self._new_revision_id,
2066
previous_ie.revision, file_parents.keys())
2067
return text_sha1, text_size
2069
new_lines = get_content_byte_lines()
2070
# TODO: Rather than invoking sha_strings here, _add_text_to_weave
2071
# should return the SHA1 and size
2072
self._add_text_to_weave(file_id, new_lines, file_parents.keys())
2073
return bzrlib.osutils.sha_strings(new_lines), \
2074
sum(map(len, new_lines))
2076
def modified_link(self, file_id, file_parents, link_target):
2077
"""Record the presence of a symbolic link.
2079
:param file_id: The file_id of the link to record.
2080
:param file_parents: The per-file parent revision ids.
2081
:param link_target: Target location of this link.
2083
self._add_text_to_weave(file_id, [], file_parents.keys())
2085
def _add_text_to_weave(self, file_id, new_lines, parents):
2086
versionedfile = self.repository.weave_store.get_weave_or_empty(
2087
file_id, self.repository.get_transaction())
2088
versionedfile.add_lines(self._new_revision_id, parents, new_lines)
2089
versionedfile.clear_cache()
2092
# Copied from xml.sax.saxutils
4131
2093
def _unescape_xml(data):
4132
"""Unescape predefined XML entities in a string of data."""
4134
if _unescape_re is None:
4135
_unescape_re = re.compile('\&([^;]*);')
4136
return _unescape_re.sub(_unescaper, data)
4139
class _VersionedFileChecker(object):
4141
def __init__(self, repository, text_key_references=None, ancestors=None):
4142
self.repository = repository
4143
self.text_index = self.repository._generate_text_key_index(
4144
text_key_references=text_key_references, ancestors=ancestors)
4146
def calculate_file_version_parents(self, text_key):
4147
"""Calculate the correct parents for a file version according to
4150
parent_keys = self.text_index[text_key]
4151
if parent_keys == [_mod_revision.NULL_REVISION]:
4153
return tuple(parent_keys)
4155
def check_file_version_parents(self, texts, progress_bar=None):
4156
"""Check the parents stored in a versioned file are correct.
4158
It also detects file versions that are not referenced by their
4159
corresponding revision's inventory.
4161
:returns: A tuple of (wrong_parents, dangling_file_versions).
4162
wrong_parents is a dict mapping {revision_id: (stored_parents,
4163
correct_parents)} for each revision_id where the stored parents
4164
are not correct. dangling_file_versions is a set of (file_id,
4165
revision_id) tuples for versions that are present in this versioned
4166
file, but not used by the corresponding inventory.
4168
local_progress = None
4169
if progress_bar is None:
4170
local_progress = ui.ui_factory.nested_progress_bar()
4171
progress_bar = local_progress
4173
return self._check_file_version_parents(texts, progress_bar)
4176
local_progress.finished()
4178
def _check_file_version_parents(self, texts, progress_bar):
4179
"""See check_file_version_parents."""
4181
self.file_ids = set([file_id for file_id, _ in
4182
self.text_index.iterkeys()])
4183
# text keys is now grouped by file_id
4184
n_versions = len(self.text_index)
4185
progress_bar.update('loading text store', 0, n_versions)
4186
parent_map = self.repository.texts.get_parent_map(self.text_index)
4187
# On unlistable transports this could well be empty/error...
4188
text_keys = self.repository.texts.keys()
4189
unused_keys = frozenset(text_keys) - set(self.text_index)
4190
for num, key in enumerate(self.text_index.iterkeys()):
4191
progress_bar.update('checking text graph', num, n_versions)
4192
correct_parents = self.calculate_file_version_parents(key)
4194
knit_parents = parent_map[key]
4195
except errors.RevisionNotPresent:
4198
if correct_parents != knit_parents:
4199
wrong_parents[key] = (knit_parents, correct_parents)
4200
return wrong_parents, unused_keys
4203
def _old_get_graph(repository, revision_id):
4204
"""DO NOT USE. That is all. I'm serious."""
4205
graph = repository.get_graph()
4206
revision_graph = dict(((key, value) for key, value in
4207
graph.iter_ancestry([revision_id]) if value is not None))
4208
return _strip_NULL_ghosts(revision_graph)
4211
def _strip_NULL_ghosts(revision_graph):
4212
"""Also don't use this. more compatibility code for unmigrated clients."""
4213
# Filter ghosts, and null:
4214
if _mod_revision.NULL_REVISION in revision_graph:
4215
del revision_graph[_mod_revision.NULL_REVISION]
4216
for key, parents in revision_graph.items():
4217
revision_graph[key] = tuple(parent for parent in parents if parent
4219
return revision_graph
4222
class StreamSink(object):
4223
"""An object that can insert a stream into a repository.
4225
This interface handles the complexity of reserialising inventories and
4226
revisions from different formats, and allows unidirectional insertion into
4227
stacked repositories without looking for the missing basis parents
4231
def __init__(self, target_repo):
4232
self.target_repo = target_repo
4234
def insert_stream(self, stream, src_format, resume_tokens):
4235
"""Insert a stream's content into the target repository.
4237
:param src_format: a bzr repository format.
4239
:return: a list of resume tokens and an iterable of keys additional
4240
items required before the insertion can be completed.
4242
self.target_repo.lock_write()
4245
self.target_repo.resume_write_group(resume_tokens)
4248
self.target_repo.start_write_group()
4251
# locked_insert_stream performs a commit|suspend.
4252
return self._locked_insert_stream(stream, src_format, is_resume)
4254
self.target_repo.abort_write_group(suppress_errors=True)
4257
self.target_repo.unlock()
4259
def _locked_insert_stream(self, stream, src_format, is_resume):
4260
to_serializer = self.target_repo._format._serializer
4261
src_serializer = src_format._serializer
4263
if to_serializer == src_serializer:
4264
# If serializers match and the target is a pack repository, set the
4265
# write cache size on the new pack. This avoids poor performance
4266
# on transports where append is unbuffered (such as
4267
# RemoteTransport). This is safe to do because nothing should read
4268
# back from the target repository while a stream with matching
4269
# serialization is being inserted.
4270
# The exception is that a delta record from the source that should
4271
# be a fulltext may need to be expanded by the target (see
4272
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4273
# explicitly flush any buffered writes first in that rare case.
4275
new_pack = self.target_repo._pack_collection._new_pack
4276
except AttributeError:
4277
# Not a pack repository
4280
new_pack.set_write_cache_size(1024*1024)
4281
for substream_type, substream in stream:
4282
if 'stream' in debug.debug_flags:
4283
mutter('inserting substream: %s', substream_type)
4284
if substream_type == 'texts':
4285
self.target_repo.texts.insert_record_stream(substream)
4286
elif substream_type == 'inventories':
4287
if src_serializer == to_serializer:
4288
self.target_repo.inventories.insert_record_stream(
4291
self._extract_and_insert_inventories(
4292
substream, src_serializer)
4293
elif substream_type == 'inventory-deltas':
4294
self._extract_and_insert_inventory_deltas(
4295
substream, src_serializer)
4296
elif substream_type == 'chk_bytes':
4297
# XXX: This doesn't support conversions, as it assumes the
4298
# conversion was done in the fetch code.
4299
self.target_repo.chk_bytes.insert_record_stream(substream)
4300
elif substream_type == 'revisions':
4301
# This may fallback to extract-and-insert more often than
4302
# required if the serializers are different only in terms of
4304
if src_serializer == to_serializer:
4305
self.target_repo.revisions.insert_record_stream(
4308
self._extract_and_insert_revisions(substream,
4310
elif substream_type == 'signatures':
4311
self.target_repo.signatures.insert_record_stream(substream)
4313
raise AssertionError('kaboom! %s' % (substream_type,))
4314
# Done inserting data, and the missing_keys calculations will try to
4315
# read back from the inserted data, so flush the writes to the new pack
4316
# (if this is pack format).
4317
if new_pack is not None:
4318
new_pack._write_data('', flush=True)
4319
# Find all the new revisions (including ones from resume_tokens)
4320
missing_keys = self.target_repo.get_missing_parent_inventories(
4321
check_for_missing_texts=is_resume)
4323
for prefix, versioned_file in (
4324
('texts', self.target_repo.texts),
4325
('inventories', self.target_repo.inventories),
4326
('revisions', self.target_repo.revisions),
4327
('signatures', self.target_repo.signatures),
4328
('chk_bytes', self.target_repo.chk_bytes),
4330
if versioned_file is None:
4332
# TODO: key is often going to be a StaticTuple object
4333
# I don't believe we can define a method by which
4334
# (prefix,) + StaticTuple will work, though we could
4335
# define a StaticTuple.sq_concat that would allow you to
4336
# pass in either a tuple or a StaticTuple as the second
4337
# object, so instead we could have:
4338
# StaticTuple(prefix) + key here...
4339
missing_keys.update((prefix,) + key for key in
4340
versioned_file.get_missing_compression_parent_keys())
4341
except NotImplementedError:
4342
# cannot even attempt suspending, and missing would have failed
4343
# during stream insertion.
4344
missing_keys = set()
4347
# suspend the write group and tell the caller what we is
4348
# missing. We know we can suspend or else we would not have
4349
# entered this code path. (All repositories that can handle
4350
# missing keys can handle suspending a write group).
4351
write_group_tokens = self.target_repo.suspend_write_group()
4352
return write_group_tokens, missing_keys
4353
hint = self.target_repo.commit_write_group()
4354
if (to_serializer != src_serializer and
4355
self.target_repo._format.pack_compresses):
4356
self.target_repo.pack(hint=hint)
4359
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4360
target_rich_root = self.target_repo._format.rich_root_data
4361
target_tree_refs = self.target_repo._format.supports_tree_reference
4362
for record in substream:
4363
# Insert the delta directly
4364
inventory_delta_bytes = record.get_bytes_as('fulltext')
4365
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4367
parse_result = deserialiser.parse_text_bytes(
4368
inventory_delta_bytes)
4369
except inventory_delta.IncompatibleInventoryDelta, err:
4370
trace.mutter("Incompatible delta: %s", err.msg)
4371
raise errors.IncompatibleRevision(self.target_repo._format)
4372
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4373
revision_id = new_id
4374
parents = [key[0] for key in record.parents]
4375
self.target_repo.add_inventory_by_delta(
4376
basis_id, inv_delta, revision_id, parents)
4378
def _extract_and_insert_inventories(self, substream, serializer,
4380
"""Generate a new inventory versionedfile in target, converting data.
4382
The inventory is retrieved from the source, (deserializing it), and
4383
stored in the target (reserializing it in a different format).
4385
target_rich_root = self.target_repo._format.rich_root_data
4386
target_tree_refs = self.target_repo._format.supports_tree_reference
4387
for record in substream:
4388
# It's not a delta, so it must be a fulltext in the source
4389
# serializer's format.
4390
bytes = record.get_bytes_as('fulltext')
4391
revision_id = record.key[0]
4392
inv = serializer.read_inventory_from_string(bytes, revision_id)
4393
parents = [key[0] for key in record.parents]
4394
self.target_repo.add_inventory(revision_id, inv, parents)
4395
# No need to keep holding this full inv in memory when the rest of
4396
# the substream is likely to be all deltas.
4399
def _extract_and_insert_revisions(self, substream, serializer):
4400
for record in substream:
4401
bytes = record.get_bytes_as('fulltext')
4402
revision_id = record.key[0]
4403
rev = serializer.read_revision_from_string(bytes)
4404
if rev.revision_id != revision_id:
4405
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4406
self.target_repo.add_revision(revision_id, rev)
4409
if self.target_repo._format._fetch_reconcile:
4410
self.target_repo.reconcile()
4413
class StreamSource(object):
4414
"""A source of a stream for fetching between repositories."""
4416
def __init__(self, from_repository, to_format):
4417
"""Create a StreamSource streaming from from_repository."""
4418
self.from_repository = from_repository
4419
self.to_format = to_format
4421
def delta_on_metadata(self):
4422
"""Return True if delta's are permitted on metadata streams.
4424
That is on revisions and signatures.
4426
src_serializer = self.from_repository._format._serializer
4427
target_serializer = self.to_format._serializer
4428
return (self.to_format._fetch_uses_deltas and
4429
src_serializer == target_serializer)
4431
def _fetch_revision_texts(self, revs):
4432
# fetch signatures first and then the revision texts
4433
# may need to be a InterRevisionStore call here.
4434
from_sf = self.from_repository.signatures
4435
# A missing signature is just skipped.
4436
keys = [(rev_id,) for rev_id in revs]
4437
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4439
self.to_format._fetch_order,
4440
not self.to_format._fetch_uses_deltas))
4441
# If a revision has a delta, this is actually expanded inside the
4442
# insert_record_stream code now, which is an alternate fix for
4444
from_rf = self.from_repository.revisions
4445
revisions = from_rf.get_record_stream(
4447
self.to_format._fetch_order,
4448
not self.delta_on_metadata())
4449
return [('signatures', signatures), ('revisions', revisions)]
4451
def _generate_root_texts(self, revs):
4452
"""This will be called by get_stream between fetching weave texts and
4453
fetching the inventory weave.
4455
if self._rich_root_upgrade():
4456
return _mod_fetch.Inter1and2Helper(
4457
self.from_repository).generate_root_texts(revs)
4461
def get_stream(self, search):
4463
revs = search.get_keys()
4464
graph = self.from_repository.get_graph()
4465
revs = tsort.topo_sort(graph.get_parent_map(revs))
4466
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4468
for knit_kind, file_id, revisions in data_to_fetch:
4469
if knit_kind != phase:
4471
# Make a new progress bar for this phase
4472
if knit_kind == "file":
4473
# Accumulate file texts
4474
text_keys.extend([(file_id, revision) for revision in
4476
elif knit_kind == "inventory":
4477
# Now copy the file texts.
4478
from_texts = self.from_repository.texts
4479
yield ('texts', from_texts.get_record_stream(
4480
text_keys, self.to_format._fetch_order,
4481
not self.to_format._fetch_uses_deltas))
4482
# Cause an error if a text occurs after we have done the
4485
# Before we process the inventory we generate the root
4486
# texts (if necessary) so that the inventories references
4488
for _ in self._generate_root_texts(revs):
4490
# we fetch only the referenced inventories because we do not
4491
# know for unselected inventories whether all their required
4492
# texts are present in the other repository - it could be
4494
for info in self._get_inventory_stream(revs):
4496
elif knit_kind == "signatures":
4497
# Nothing to do here; this will be taken care of when
4498
# _fetch_revision_texts happens.
4500
elif knit_kind == "revisions":
4501
for record in self._fetch_revision_texts(revs):
4504
raise AssertionError("Unknown knit kind %r" % knit_kind)
4506
def get_stream_for_missing_keys(self, missing_keys):
4507
# missing keys can only occur when we are byte copying and not
4508
# translating (because translation means we don't send
4509
# unreconstructable deltas ever).
4511
keys['texts'] = set()
4512
keys['revisions'] = set()
4513
keys['inventories'] = set()
4514
keys['chk_bytes'] = set()
4515
keys['signatures'] = set()
4516
for key in missing_keys:
4517
keys[key[0]].add(key[1:])
4518
if len(keys['revisions']):
4519
# If we allowed copying revisions at this point, we could end up
4520
# copying a revision without copying its required texts: a
4521
# violation of the requirements for repository integrity.
4522
raise AssertionError(
4523
'cannot copy revisions to fill in missing deltas %s' % (
4524
keys['revisions'],))
4525
for substream_kind, keys in keys.iteritems():
4526
vf = getattr(self.from_repository, substream_kind)
4527
if vf is None and keys:
4528
raise AssertionError(
4529
"cannot fill in keys for a versioned file we don't"
4530
" have: %s needs %s" % (substream_kind, keys))
4532
# No need to stream something we don't have
4534
if substream_kind == 'inventories':
4535
# Some missing keys are genuinely ghosts, filter those out.
4536
present = self.from_repository.inventories.get_parent_map(keys)
4537
revs = [key[0] for key in present]
4538
# Get the inventory stream more-or-less as we do for the
4539
# original stream; there's no reason to assume that records
4540
# direct from the source will be suitable for the sink. (Think
4541
# e.g. 2a -> 1.9-rich-root).
4542
for info in self._get_inventory_stream(revs, missing=True):
4546
# Ask for full texts always so that we don't need more round trips
4547
# after this stream.
4548
# Some of the missing keys are genuinely ghosts, so filter absent
4549
# records. The Sink is responsible for doing another check to
4550
# ensure that ghosts don't introduce missing data for future
4552
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4553
self.to_format._fetch_order, True))
4554
yield substream_kind, stream
4556
def inventory_fetch_order(self):
4557
if self._rich_root_upgrade():
4558
return 'topological'
4560
return self.to_format._fetch_order
4562
def _rich_root_upgrade(self):
4563
return (not self.from_repository._format.rich_root_data and
4564
self.to_format.rich_root_data)
4566
def _get_inventory_stream(self, revision_ids, missing=False):
4567
from_format = self.from_repository._format
4568
if (from_format.supports_chks and self.to_format.supports_chks and
4569
from_format.network_name() == self.to_format.network_name()):
4570
raise AssertionError(
4571
"this case should be handled by GroupCHKStreamSource")
4572
elif 'forceinvdeltas' in debug.debug_flags:
4573
return self._get_convertable_inventory_stream(revision_ids,
4574
delta_versus_null=missing)
4575
elif from_format.network_name() == self.to_format.network_name():
4577
return self._get_simple_inventory_stream(revision_ids,
4579
elif (not from_format.supports_chks and not self.to_format.supports_chks
4580
and from_format._serializer == self.to_format._serializer):
4581
# Essentially the same format.
4582
return self._get_simple_inventory_stream(revision_ids,
4585
# Any time we switch serializations, we want to use an
4586
# inventory-delta based approach.
4587
return self._get_convertable_inventory_stream(revision_ids,
4588
delta_versus_null=missing)
4590
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4591
# NB: This currently reopens the inventory weave in source;
4592
# using a single stream interface instead would avoid this.
4593
from_weave = self.from_repository.inventories
4595
delta_closure = True
4597
delta_closure = not self.delta_on_metadata()
4598
yield ('inventories', from_weave.get_record_stream(
4599
[(rev_id,) for rev_id in revision_ids],
4600
self.inventory_fetch_order(), delta_closure))
4602
def _get_convertable_inventory_stream(self, revision_ids,
4603
delta_versus_null=False):
4604
# The two formats are sufficiently different that there is no fast
4605
# path, so we need to send just inventorydeltas, which any
4606
# sufficiently modern client can insert into any repository.
4607
# The StreamSink code expects to be able to
4608
# convert on the target, so we need to put bytes-on-the-wire that can
4609
# be converted. That means inventory deltas (if the remote is <1.19,
4610
# RemoteStreamSink will fallback to VFS to insert the deltas).
4611
yield ('inventory-deltas',
4612
self._stream_invs_as_deltas(revision_ids,
4613
delta_versus_null=delta_versus_null))
4615
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4616
"""Return a stream of inventory-deltas for the given rev ids.
4618
:param revision_ids: The list of inventories to transmit
4619
:param delta_versus_null: Don't try to find a minimal delta for this
4620
entry, instead compute the delta versus the NULL_REVISION. This
4621
effectively streams a complete inventory. Used for stuff like
4622
filling in missing parents, etc.
4624
from_repo = self.from_repository
4625
revision_keys = [(rev_id,) for rev_id in revision_ids]
4626
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4627
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4629
inventories = self.from_repository.iter_inventories(
4630
revision_ids, 'topological')
4631
format = from_repo._format
4632
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4633
inventory_cache = lru_cache.LRUCache(50)
4634
null_inventory = from_repo.revision_tree(
4635
_mod_revision.NULL_REVISION).inventory
4636
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4637
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4638
# repo back into a non-rich-root repo ought to be allowed)
4639
serializer = inventory_delta.InventoryDeltaSerializer(
4640
versioned_root=format.rich_root_data,
4641
tree_references=format.supports_tree_reference)
4642
for inv in inventories:
4643
key = (inv.revision_id,)
4644
parent_keys = parent_map.get(key, ())
4646
if not delta_versus_null and parent_keys:
4647
# The caller did not ask for complete inventories and we have
4648
# some parents that we can delta against. Make a delta against
4649
# each parent so that we can find the smallest.
4650
parent_ids = [parent_key[0] for parent_key in parent_keys]
4651
for parent_id in parent_ids:
4652
if parent_id not in invs_sent_so_far:
4653
# We don't know that the remote side has this basis, so
4656
if parent_id == _mod_revision.NULL_REVISION:
4657
parent_inv = null_inventory
4659
parent_inv = inventory_cache.get(parent_id, None)
4660
if parent_inv is None:
4661
parent_inv = from_repo.get_inventory(parent_id)
4662
candidate_delta = inv._make_delta(parent_inv)
4663
if (delta is None or
4664
len(delta) > len(candidate_delta)):
4665
delta = candidate_delta
4666
basis_id = parent_id
4668
# Either none of the parents ended up being suitable, or we
4669
# were asked to delta against NULL
4670
basis_id = _mod_revision.NULL_REVISION
4671
delta = inv._make_delta(null_inventory)
4672
invs_sent_so_far.add(inv.revision_id)
4673
inventory_cache[inv.revision_id] = inv
4674
delta_serialized = ''.join(
4675
serializer.delta_to_lines(basis_id, key[-1], delta))
4676
yield versionedfile.FulltextContentFactory(
4677
key, parent_keys, None, delta_serialized)
4680
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4681
stop_revision=None):
4682
"""Extend the partial history to include a given index
4684
If a stop_index is supplied, stop when that index has been reached.
4685
If a stop_revision is supplied, stop when that revision is
4686
encountered. Otherwise, stop when the beginning of history is
4689
:param stop_index: The index which should be present. When it is
4690
present, history extension will stop.
4691
:param stop_revision: The revision id which should be present. When
4692
it is encountered, history extension will stop.
4694
start_revision = partial_history_cache[-1]
4695
iterator = repo.iter_reverse_revision_history(start_revision)
4697
#skip the last revision in the list
4700
if (stop_index is not None and
4701
len(partial_history_cache) > stop_index):
4703
if partial_history_cache[-1] == stop_revision:
4705
revision_id = iterator.next()
4706
partial_history_cache.append(revision_id)
4707
except StopIteration:
2094
"""Unescape &, <, and > in a string of data.
2096
data = data.replace("<", "<")
2097
data = data.replace(">", ">")
2098
# must do ampersand last
2099
return data.replace("&", "&")