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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
147
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]))
150
for id in revision_ids:
151
if self.has_revision(id):
1285
156
def create(a_bzrdir):
1286
157
"""Construct the current default format repository in a_bzrdir."""
1287
158
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
1289
def __init__(self, _format, a_bzrdir, control_files):
160
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1290
161
"""instantiate a Repository.
1292
163
:param _format: The format of the repository on disk.
1293
164
:param a_bzrdir: The BzrDir of the repository.
166
In the future we will have a single api for all stores for
167
getting file texts, inventories and revisions, then
168
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
170
super(Repository, self).__init__()
1299
171
self._format = _format
1300
172
# the following are part of the public API for Repository:
1301
173
self.bzrdir = a_bzrdir
1302
174
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
175
self._revision_store = _revision_store
176
self.text_store = text_store
177
# backwards compatability
178
self.weave_store = text_store
179
# not right yet - should be more semantically clear ?
181
self.control_store = control_store
182
self.control_weaves = control_store
183
# TODO: make sure to construct the right store classes, etc, depending
184
# on whether escaping is required.
1326
186
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
187
return '%s(%r)' % (self.__class__.__name__,
188
self.bzrdir.transport.base)
1365
190
def is_locked(self):
1366
191
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()
193
def lock_write(self):
194
self.control_files.lock_write()
1405
196
def lock_read(self):
1406
locked = self.is_locked()
1407
197
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
199
def get_physical_lock_status(self):
1416
200
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):
203
def missing_revision_ids(self, other, revision_id=None):
1526
204
"""Return the revision ids that other has that this does not.
1528
206
These are returned in topological order.
1530
208
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)
210
return InterRepository.get(other, self).missing_revision_ids(revision_id)
1722
249
:param revprops: Optional dictionary of revision properties.
1723
250
: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()
252
return CommitBuilder(self, parents, config, timestamp, timezone,
253
committer, revprops, revision_id)
1734
@only_raises(errors.LockNotHeld, errors.LockBroken)
1735
255
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
256
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
258
@needs_read_lock
1750
def clone(self, a_bzrdir, revision_id=None):
259
def clone(self, a_bzrdir, revision_id=None, basis=None):
1751
260
"""Clone this repository into a_bzrdir using the current format.
1753
262
Currently no check is made that the format of this repository and
1754
263
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
265
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1805
266
# use target default format.
1806
dest_repo = a_bzrdir.create_repository()
267
result = a_bzrdir.create_repository()
268
# FIXME RBC 20060209 split out the repository type to avoid this check ?
269
elif isinstance(a_bzrdir._format,
270
(bzrlib.bzrdir.BzrDirFormat4,
271
bzrlib.bzrdir.BzrDirFormat5,
272
bzrlib.bzrdir.BzrDirFormat6)):
273
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)
275
result = self._format.initialize(a_bzrdir, shared=self.is_shared())
276
self.copy_content_into(result, revision_id, basis)
1824
279
@needs_read_lock
1825
280
def has_revision(self, revision_id):
1826
281
"""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]
282
return self._revision_store.has_revision_id(revision_id,
283
self.get_transaction())
1849
285
@needs_read_lock
1850
286
def get_revision_reconcile(self, revision_id):
1851
287
"""'reconcile' helper routine that allows access to a revision always.
1853
289
This variant of get_revision does not cross check the weave graph
1854
290
against the revision one as get_revision does: but it should only
1855
291
be used by reconcile, or reconcile-alike commands that are correcting
1856
292
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.
294
if not revision_id or not isinstance(revision_id, basestring):
295
raise InvalidRevisionId(revision_id=revision_id, branch=self)
296
return self._revision_store.get_revision(revision_id,
297
self.get_transaction())
300
def get_revision_xml(self, revision_id):
301
rev = self.get_revision(revision_id)
303
# the current serializer..
304
self._revision_store._serializer.write_revision(rev, rev_tmp)
306
return rev_tmp.getvalue()
309
def get_revision(self, revision_id):
310
"""Return the Revision object for a named revision"""
311
r = self.get_revision_reconcile(revision_id)
312
# weave corruption can lead to absent revision markers that should be
314
# the following test is reasonably cheap (it needs a single weave read)
315
# and the weave is cached in read transactions. In write transactions
316
# it is not cached but typically we only read a small number of
317
# revisions. For knits when they are introduced we will probably want
318
# to ensure that caching write transactions are in use.
319
inv = self.get_inventory_weave()
320
self._check_revision_parents(r, inv)
323
def _check_revision_parents(self, revision, inventory):
324
"""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]
326
This checks the parentage of revision in an inventory weave for
327
consistency and is only applicable to inventory-weave-for-ancestry
328
using repository formats & fetchers.
330
weave_parents = inventory.get_parents(revision.revision_id)
331
weave_names = inventory.versions()
332
for parent_id in revision.parent_ids:
333
if parent_id in weave_names:
334
# this parent must not be a ghost.
335
if not parent_id in weave_parents:
337
raise errors.CorruptRepository(self)
1960
339
@needs_write_lock
1961
340
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1962
341
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)
342
self._revision_store.add_revision_signature_text(revision_id,
344
self.get_transaction())
346
def fileids_altered_by_revision_ids(self, revision_ids):
347
"""Find the file ids and versions affected by revisions.
349
:param revisions: an iterable containing revision ids.
350
:return: a dictionary mapping altered file-ids to an iterable of
351
revision_ids. Each altered file-ids has the exact revision_ids that
352
altered it listed explicitly.
354
assert isinstance(self._format, (RepositoryFormat5,
357
RepositoryFormatKnit1)), \
358
"fileid_involved only supported for branches which store inventory as unnested xml"
359
selected_revision_ids = set(revision_ids)
360
w = self.get_inventory_weave()
2007
363
# this code needs to read every new line in every inventory for the
2008
364
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
2009
# not present in one of those inventories is unnecessary but not
365
# not pesent in one of those inventories is unnecessary but not
2010
366
# 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
2012
# revisions. We don't need to see all lines in the inventory because
367
# inventory lines : we only select file ids altered in one of those
368
# revisions. We dont need to see all lines in the inventory because
2013
369
# 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)
371
for line in w.iter_lines_added_or_present_in_versions(selected_revision_ids):
372
start = line.find('file_id="')+9
373
if start < 9: continue
374
end = line.find('"', start)
376
file_id = _unescape_xml(line[start:end])
378
start = line.find('revision="')+10
379
if start < 10: continue
380
end = line.find('"', start)
382
revision_id = _unescape_xml(line[start:end])
383
if revision_id in selected_revision_ids:
384
result.setdefault(file_id, set()).add(revision_id)
388
def get_inventory_weave(self):
389
return self.control_weaves.get_weave('inventory',
390
self.get_transaction())
2345
392
@needs_read_lock
2346
393
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.
394
"""Get Inventory object by hash."""
395
return self.deserialise_inventory(
396
revision_id, self.get_inventory_xml(revision_id))
398
def deserialise_inventory(self, revision_id, xml):
399
"""Transform the xml into an inventory object.
2413
401
:param revision_id: The expected revision id of the inventory.
2414
402
: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))
404
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
407
def get_inventory_xml(self, revision_id):
408
"""Get inventory XML as a file object."""
410
assert isinstance(revision_id, basestring), type(revision_id)
411
iw = self.get_inventory_weave()
412
return iw.get_text(revision_id)
414
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
417
def get_inventory_sha1(self, revision_id):
418
"""Return the sha1 hash of the inventory entry
420
return self.get_revision(revision_id).inventory_sha1
423
def get_revision_graph(self, revision_id=None):
424
"""Return a dictionary containing the revision graph.
426
:return: a dictionary of revision_id->revision_parents_list.
428
weave = self.get_inventory_weave()
429
all_revisions = self._eliminate_revisions_not_present(weave.versions())
430
entire_graph = dict([(node, weave.get_parents(node)) for
431
node in all_revisions])
432
if revision_id is None:
434
elif revision_id not in entire_graph:
435
raise errors.NoSuchRevision(self, revision_id)
437
# add what can be reached from revision_id
439
pending = set([revision_id])
440
while len(pending) > 0:
442
result[node] = entire_graph[node]
443
for revision_id in result[node]:
444
if revision_id not in result:
445
pending.add(revision_id)
449
def get_revision_graph_with_ghosts(self, revision_ids=None):
450
"""Return a graph of the revisions with ghosts marked as applicable.
452
:param revision_ids: an iterable of revisions to graph or None for all.
453
:return: a Graph object with the graph reachable from revision_ids.
457
pending = set(self.all_revision_ids())
460
pending = set(revision_ids)
461
required = set(revision_ids)
464
revision_id = pending.pop()
466
rev = self.get_revision(revision_id)
467
except errors.NoSuchRevision:
468
if revision_id in required:
471
result.add_ghost(revision_id)
473
for parent_id in rev.parent_ids:
474
# is this queued or done ?
475
if (parent_id not in pending and
476
parent_id not in done):
478
pending.add(parent_id)
479
result.add_node(revision_id, rev.parent_ids)
480
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]
484
def get_revision_inventory(self, revision_id):
485
"""Return inventory of a past revision."""
486
# TODO: Unify this with get_inventory()
487
# bzr 0.0.6 and later imposes the constraint that the inventory_id
488
# must be the same as its revision, so this is trivial.
489
if revision_id is None:
490
# This does not make sense: if there is no revision,
491
# then it is the current tree inventory surely ?!
492
# and thus get_root_id() is something that looks at the last
493
# commit on the branch, and the get_root_id is an inventory check.
494
raise NotImplementedError
495
# return Inventory(self.get_root_id())
497
return self.get_inventory(revision_id)
2493
500
def is_shared(self):
2494
501
"""Return True if this repository is flagged as a shared repository."""
2495
502
raise NotImplementedError(self.is_shared)
2948
self._transport.delete('no-working-trees')
727
self.control_files._transport.delete('no-working-trees')
2949
728
except errors.NoSuchFile:
2952
self._transport.put_bytes('no-working-trees', '',
2953
mode=self.bzrdir._get_file_mode())
731
self.control_files.put_utf8('no-working-trees', '')
2955
733
def make_working_trees(self):
2956
734
"""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
735
return not self.control_files._transport.has('no-working-trees')
738
class KnitRepository(MetaDirRepository):
739
"""Knit format repository."""
741
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
742
inv_vf.add_lines_with_ghosts(revid, parents, lines)
745
def all_revision_ids(self):
746
"""See Repository.all_revision_ids()."""
747
return self._revision_store.all_revision_ids(self.get_transaction())
749
def fileid_involved_between_revs(self, from_revid, to_revid):
750
"""Find file_id(s) which are involved in the changes between revisions.
752
This determines the set of revisions which are involved, and then
753
finds all file ids affected by those revisions.
755
vf = self._get_revision_vf()
756
from_set = set(vf.get_ancestry(from_revid))
757
to_set = set(vf.get_ancestry(to_revid))
758
changed = to_set.difference(from_set)
759
return self._fileid_involved_by_set(changed)
761
def fileid_involved(self, last_revid=None):
762
"""Find all file_ids modified in the ancestry of last_revid.
764
:param last_revid: If None, last_revision() will be used.
767
changed = set(self.all_revision_ids())
769
changed = set(self.get_ancestry(last_revid))
772
return self._fileid_involved_by_set(changed)
775
def get_ancestry(self, revision_id):
776
"""Return a list of revision-ids integrated by a revision.
778
This is topologically sorted.
780
if revision_id is None:
782
vf = self._get_revision_vf()
784
return [None] + vf.get_ancestry(revision_id)
785
except errors.RevisionNotPresent:
786
raise errors.NoSuchRevision(self, revision_id)
789
def get_revision(self, revision_id):
790
"""Return the Revision object for a named revision"""
791
return self.get_revision_reconcile(revision_id)
794
def get_revision_graph(self, revision_id=None):
795
"""Return a dictionary containing the revision graph.
797
:return: a dictionary of revision_id->revision_parents_list.
799
weave = self._get_revision_vf()
800
entire_graph = weave.get_graph()
801
if revision_id is None:
802
return weave.get_graph()
803
elif revision_id not in weave:
804
raise errors.NoSuchRevision(self, revision_id)
806
# add what can be reached from revision_id
808
pending = set([revision_id])
809
while len(pending) > 0:
811
result[node] = weave.get_parents(node)
812
for revision_id in result[node]:
813
if revision_id not in result:
814
pending.add(revision_id)
818
def get_revision_graph_with_ghosts(self, revision_ids=None):
819
"""Return a graph of the revisions with ghosts marked as applicable.
821
:param revision_ids: an iterable of revisions to graph or None for all.
822
:return: a Graph object with the graph reachable from revision_ids.
825
vf = self._get_revision_vf()
826
versions = set(vf.versions())
828
pending = set(self.all_revision_ids())
831
pending = set(revision_ids)
832
required = set(revision_ids)
835
revision_id = pending.pop()
836
if not revision_id in versions:
837
if revision_id in required:
838
raise errors.NoSuchRevision(self, revision_id)
840
result.add_ghost(revision_id)
841
# mark it as done so we dont try for it again.
842
done.add(revision_id)
844
parent_ids = vf.get_parents_with_ghosts(revision_id)
845
for parent_id in parent_ids:
846
# is this queued or done ?
847
if (parent_id not in pending and
848
parent_id not in done):
850
pending.add(parent_id)
851
result.add_node(revision_id, parent_ids)
852
done.add(revision_id)
855
def _get_revision_vf(self):
856
""":return: a versioned file containing the revisions."""
857
vf = self._revision_store.get_revision_file(self.get_transaction())
861
def reconcile(self, other=None, thorough=False):
862
"""Reconcile this repository."""
863
from bzrlib.reconcile import KnitReconciler
864
reconciler = KnitReconciler(self, thorough=thorough)
865
reconciler.reconcile()
868
def revision_parents(self, revid):
869
return self._get_revision_vf().get_parents(rev_id)
2988
871
class RepositoryFormat(object):
2989
872
"""A repository format.
2991
Formats provide four things:
874
Formats provide three things:
2992
875
* An initialization routine to construct repository data on disk.
2993
* a optional format string which is used when the BzrDir supports
876
* a format string which is used when the BzrDir supports versioned
2995
878
* 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
880
Formats are placed in an dict by their format string for reference
881
during opening. These should be subclasses of RepositoryFormat
3008
884
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
885
methods on the format class. Do not deprecate the object, as the
886
object will be created every system load.
3013
888
Common instance attributes:
3014
889
_matchingbzrdir - the bzrdir format that the repository format was
3015
890
originally written to work with. This can be used if manually
3016
891
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
895
_default_format = None
896
"""The default format used for new repositories."""
899
"""The known formats."""
3067
902
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
903
"""Return the format for the repository object in a_bzrdir."""
3075
905
transport = a_bzrdir.get_repository_transport(None)
3076
format_string = transport.get_bytes("format")
3077
return format_registry.get(format_string)
906
format_string = transport.get("format").read()
907
return klass._formats[format_string]
3078
908
except errors.NoSuchFile:
3079
909
raise errors.NoRepositoryPresent(a_bzrdir)
3080
910
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())
911
raise errors.UnknownFormatError(format_string)
913
def _get_control_store(self, repo_transport, control_files):
914
"""Return the control store for this repository."""
915
raise NotImplementedError(self._get_control_store)
3093
918
def get_default_format(klass):
3094
919
"""Return the current default format."""
3095
from bzrlib import bzrdir
3096
return bzrdir.format_registry.make_bzrdir('default').repository_format
920
return klass._default_format
3098
922
def get_format_string(self):
3099
923
"""Return the ASCII format string that identifies this format.
3101
Note that in pre format ?? repositories the format string is
925
Note that in pre format ?? repositories the format string is
3102
926
not permitted nor written to disk.
3104
928
raise NotImplementedError(self.get_format_string)
3106
930
def get_format_description(self):
3107
"""Return the short description for this format."""
931
"""Return the short desciption for this format."""
3108
932
raise NotImplementedError(self.get_format_description)
3110
# TODO: this shouldn't be in the base class, it's specific to things that
3111
# use weaves or knits -- mbp 20070207
934
def _get_revision_store(self, repo_transport, control_files):
935
"""Return the revision store object for this a_bzrdir."""
936
raise NotImplementedError(self._get_revision_store)
938
def _get_text_rev_store(self,
945
"""Common logic for getting a revision store for a repository.
947
see self._get_revision_store for the subclass-overridable method to
948
get the store for a repository.
950
from bzrlib.store.revision.text import TextRevisionStore
951
dir_mode = control_files._dir_mode
952
file_mode = control_files._file_mode
953
text_store =TextStore(transport.clone(name),
955
compressed=compressed,
958
_revision_store = TextRevisionStore(text_store, serializer)
959
return _revision_store
3112
961
def _get_versioned_file_store(self,
3117
versionedfile_class=None,
3118
versionedfile_kwargs={},
966
versionedfile_class=WeaveFile,
3120
if versionedfile_class is None:
3121
versionedfile_class = self._versionedfile_class
3122
968
weave_transport = control_files._transport.clone(name)
3123
969
dir_mode = control_files._dir_mode
3124
970
file_mode = control_files._file_mode
3135
980
:param a_bzrdir: The bzrdir to put the new repository in it.
3136
981
:param shared: The repository should be initialized as a sharable one.
3137
:returns: The new repository object.
3139
983
This may raise UninitializableFormat if shared repository are not
3140
984
compatible the a_bzrdir.
3142
raise NotImplementedError(self.initialize)
3144
987
def is_supported(self):
3145
988
"""Is this format supported?
3147
990
Supported formats must be initializable and openable.
3148
Unsupported formats may not support initialization or committing or
991
Unsupported formats may not support initialization or committing or
3149
992
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
996
def open(self, a_bzrdir, _found=False):
3175
997
"""Return an instance of this format for the bzrdir a_bzrdir.
3177
999
_found is a private parameter, do not use it.
3179
1001
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)
1004
def register_format(klass, format):
1005
klass._formats[format.get_format_string()] = format
1008
def set_default_format(klass, format):
1009
klass._default_format = format
1012
def unregister_format(klass, format):
1013
assert klass._formats[format.get_format_string()] is format
1014
del klass._formats[format.get_format_string()]
1017
class PreSplitOutRepositoryFormat(RepositoryFormat):
1018
"""Base class for the pre split out repository formats."""
1020
def initialize(self, a_bzrdir, shared=False, _internal=False):
1021
"""Create a weave repository.
1023
TODO: when creating split out bzr branch formats, move this to a common
1024
base for Format5, Format6. or something like that.
1026
from bzrlib.weavefile import write_weave_v5
1027
from bzrlib.weave import Weave
1030
raise errors.IncompatibleFormat(self, a_bzrdir._format)
1033
# always initialized when the bzrdir is.
1034
return self.open(a_bzrdir, _found=True)
1036
# Create an empty weave
1038
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1039
empty_weave = sio.getvalue()
1041
mutter('creating repository in %s.', a_bzrdir.transport.base)
1042
dirs = ['revision-store', 'weaves']
1043
files = [('inventory.weave', StringIO(empty_weave)),
1046
# FIXME: RBC 20060125 dont peek under the covers
1047
# NB: no need to escape relative paths that are url safe.
1048
control_files = LockableFiles(a_bzrdir.transport, 'branch-lock',
1050
control_files.create_lock()
1051
control_files.lock_write()
1052
control_files._transport.mkdir_multi(dirs,
1053
mode=control_files._dir_mode)
1055
for file, content in files:
1056
control_files.put(file, content)
1058
control_files.unlock()
1059
return self.open(a_bzrdir, _found=True)
1061
def _get_control_store(self, repo_transport, control_files):
1062
"""Return the control store for this repository."""
1063
return self._get_versioned_file_store('',
1068
def _get_text_store(self, transport, control_files):
1069
"""Get a store for file texts for this format."""
1070
raise NotImplementedError(self._get_text_store)
1072
def open(self, a_bzrdir, _found=False):
1073
"""See RepositoryFormat.open()."""
1075
# we are being called directly and must probe.
1076
raise NotImplementedError
1078
repo_transport = a_bzrdir.get_repository_transport(None)
1079
control_files = a_bzrdir._control_files
1080
text_store = self._get_text_store(repo_transport, control_files)
1081
control_store = self._get_control_store(repo_transport, control_files)
1082
_revision_store = self._get_revision_store(repo_transport, control_files)
1083
return AllInOneRepository(_format=self,
1085
_revision_store=_revision_store,
1086
control_store=control_store,
1087
text_store=text_store)
1090
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1091
"""Bzr repository format 4.
1093
This repository format has:
1095
- TextStores for texts, inventories,revisions.
1097
This format is deprecated: it indexes texts using a text id which is
1098
removed in format 5; initializationa and write support for this format
1103
super(RepositoryFormat4, self).__init__()
1104
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat4()
1106
def get_format_description(self):
1107
"""See RepositoryFormat.get_format_description()."""
1108
return "Repository format 4"
1110
def initialize(self, url, shared=False, _internal=False):
1111
"""Format 4 branches cannot be created."""
1112
raise errors.UninitializableFormat(self)
1114
def is_supported(self):
1115
"""Format 4 is not supported.
1117
It is not supported because the model changed from 4 to 5 and the
1118
conversion logic is expensive - so doing it on the fly was not
1123
def _get_control_store(self, repo_transport, control_files):
1124
"""Format 4 repositories have no formal control store at this point.
1126
This will cause any control-file-needing apis to fail - this is desired.
1130
def _get_revision_store(self, repo_transport, control_files):
1131
"""See RepositoryFormat._get_revision_store()."""
1132
from bzrlib.xml4 import serializer_v4
1133
return self._get_text_rev_store(repo_transport,
1136
serializer=serializer_v4)
1138
def _get_text_store(self, transport, control_files):
1139
"""See RepositoryFormat._get_text_store()."""
1142
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1143
"""Bzr control format 5.
1145
This repository format has:
1146
- weaves for file texts and inventory
1148
- TextStores for revisions and signatures.
1152
super(RepositoryFormat5, self).__init__()
1153
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat5()
1155
def get_format_description(self):
1156
"""See RepositoryFormat.get_format_description()."""
1157
return "Weave repository format 5"
1159
def _get_revision_store(self, repo_transport, control_files):
1160
"""See RepositoryFormat._get_revision_store()."""
1161
"""Return the revision store object for this a_bzrdir."""
1162
return self._get_text_rev_store(repo_transport,
1167
def _get_text_store(self, transport, control_files):
1168
"""See RepositoryFormat._get_text_store()."""
1169
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1172
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1173
"""Bzr control format 6.
1175
This repository format has:
1176
- weaves for file texts and inventory
1177
- hash subdirectory based stores.
1178
- TextStores for revisions and signatures.
1182
super(RepositoryFormat6, self).__init__()
1183
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat6()
1185
def get_format_description(self):
1186
"""See RepositoryFormat.get_format_description()."""
1187
return "Weave repository format 6"
1189
def _get_revision_store(self, repo_transport, control_files):
1190
"""See RepositoryFormat._get_revision_store()."""
1191
return self._get_text_rev_store(repo_transport,
1197
def _get_text_store(self, transport, control_files):
1198
"""See RepositoryFormat._get_text_store()."""
1199
return self._get_versioned_file_store('weaves', transport, control_files)
3191
1202
class MetaDirRepositoryFormat(RepositoryFormat):
3192
"""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
1203
"""Common base class for the new repositories using the metadir layour."""
3204
1205
def __init__(self):
3205
1206
super(MetaDirRepositoryFormat, self).__init__()
1207
self._matchingbzrdir = bzrlib.bzrdir.BzrDirMetaFormat1()
3207
1209
def _create_control_files(self, a_bzrdir):
3208
1210
"""Create the required files and the initial control_files object."""
3209
# FIXME: RBC 20060125 don't peek under the covers
1211
# FIXME: RBC 20060125 dont peek under the covers
3210
1212
# NB: no need to escape relative paths that are url safe.
3211
1213
repository_transport = a_bzrdir.get_repository_transport(self)
3212
control_files = lockable_files.LockableFiles(repository_transport,
3213
'lock', lockdir.LockDir)
1214
control_files = LockableFiles(repository_transport, 'lock', LockDir)
3214
1215
control_files.create_lock()
3215
1216
return control_files
3218
1219
"""Upload the initial blank content."""
3219
1220
control_files = self._create_control_files(a_bzrdir)
3220
1221
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())
1223
control_files._transport.mkdir_multi(dirs,
1224
mode=control_files._dir_mode)
1225
for file, content in files:
1226
control_files.put(file, content)
1227
for file, content in utf8_files:
1228
control_files.put_utf8(file, content)
1230
control_files.put_utf8('shared-storage', '')
3233
1232
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',
1235
class RepositoryFormat7(MetaDirRepositoryFormat):
1236
"""Bzr repository 7.
1238
This repository format has:
1239
- weaves for file texts and inventory
1240
- hash subdirectory based stores.
1241
- TextStores for revisions and signatures.
1242
- a format marker of its own
1243
- an optional 'shared-storage' flag
1244
- an optional 'no-working-trees' flag
1247
def _get_control_store(self, repo_transport, control_files):
1248
"""Return the control store for this repository."""
1249
return self._get_versioned_file_store('',
1254
def get_format_string(self):
1255
"""See RepositoryFormat.get_format_string()."""
1256
return "Bazaar-NG Repository format 7"
1258
def get_format_description(self):
1259
"""See RepositoryFormat.get_format_description()."""
1260
return "Weave repository format 7"
1262
def _get_revision_store(self, repo_transport, control_files):
1263
"""See RepositoryFormat._get_revision_store()."""
1264
return self._get_text_rev_store(repo_transport,
1271
def _get_text_store(self, transport, control_files):
1272
"""See RepositoryFormat._get_text_store()."""
1273
return self._get_versioned_file_store('weaves',
1277
def initialize(self, a_bzrdir, shared=False):
1278
"""Create a weave repository.
1280
:param shared: If true the repository will be initialized as a shared
1283
from bzrlib.weavefile import write_weave_v5
1284
from bzrlib.weave import Weave
1286
# Create an empty weave
1288
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1289
empty_weave = sio.getvalue()
1291
mutter('creating repository in %s.', a_bzrdir.transport.base)
1292
dirs = ['revision-store', 'weaves']
1293
files = [('inventory.weave', StringIO(empty_weave)),
1295
utf8_files = [('format', self.get_format_string())]
1297
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1298
return self.open(a_bzrdir=a_bzrdir, _found=True)
1300
def open(self, a_bzrdir, _found=False, _override_transport=None):
1301
"""See RepositoryFormat.open().
1303
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1304
repository at a slightly different url
1305
than normal. I.e. during 'upgrade'.
1308
format = RepositoryFormat.find_format(a_bzrdir)
1309
assert format.__class__ == self.__class__
1310
if _override_transport is not None:
1311
repo_transport = _override_transport
1313
repo_transport = a_bzrdir.get_repository_transport(None)
1314
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1315
text_store = self._get_text_store(repo_transport, control_files)
1316
control_store = self._get_control_store(repo_transport, control_files)
1317
_revision_store = self._get_revision_store(repo_transport, control_files)
1318
return MetaDirRepository(_format=self,
1320
control_files=control_files,
1321
_revision_store=_revision_store,
1322
control_store=control_store,
1323
text_store=text_store)
1326
class RepositoryFormatKnit1(MetaDirRepositoryFormat):
1327
"""Bzr repository knit format 1.
1329
This repository format has:
1330
- knits for file texts and inventory
1331
- hash subdirectory based stores.
1332
- knits for revisions and signatures
1333
- TextStores for revisions and signatures.
1334
- a format marker of its own
1335
- an optional 'shared-storage' flag
1336
- an optional 'no-working-trees' flag
1339
This format was introduced in bzr 0.8.
1342
def _get_control_store(self, repo_transport, control_files):
1343
"""Return the control store for this repository."""
1344
return VersionedFileStore(
1347
file_mode=control_files._file_mode,
1348
versionedfile_class=KnitVersionedFile,
1349
versionedfile_kwargs={'factory':KnitPlainFactory()},
1352
def get_format_string(self):
1353
"""See RepositoryFormat.get_format_string()."""
1354
return "Bazaar-NG Knit Repository Format 1"
1356
def get_format_description(self):
1357
"""See RepositoryFormat.get_format_description()."""
1358
return "Knit repository format 1"
1360
def _get_revision_store(self, repo_transport, control_files):
1361
"""See RepositoryFormat._get_revision_store()."""
1362
from bzrlib.store.revision.knit import KnitRevisionStore
1363
versioned_file_store = VersionedFileStore(
1365
file_mode=control_files._file_mode,
1368
versionedfile_class=KnitVersionedFile,
1369
versionedfile_kwargs={'delta':False, 'factory':KnitPlainFactory()},
1372
return KnitRevisionStore(versioned_file_store)
1374
def _get_text_store(self, transport, control_files):
1375
"""See RepositoryFormat._get_text_store()."""
1376
return self._get_versioned_file_store('knits',
1379
versionedfile_class=KnitVersionedFile,
1382
def initialize(self, a_bzrdir, shared=False):
1383
"""Create a knit format 1 repository.
1385
:param a_bzrdir: bzrdir to contain the new repository; must already
1387
:param shared: If true the repository will be initialized as a shared
1390
mutter('creating repository in %s.', a_bzrdir.transport.base)
1391
dirs = ['revision-store', 'knits']
1393
utf8_files = [('format', self.get_format_string())]
1395
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1396
repo_transport = a_bzrdir.get_repository_transport(None)
1397
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1398
control_store = self._get_control_store(repo_transport, control_files)
1399
transaction = bzrlib.transactions.WriteTransaction()
1400
# trigger a write of the inventory store.
1401
control_store.get_weave_or_empty('inventory', transaction)
1402
_revision_store = self._get_revision_store(repo_transport, control_files)
1403
_revision_store.has_revision_id('A', transaction)
1404
_revision_store.get_signature_file(transaction)
1405
return self.open(a_bzrdir=a_bzrdir, _found=True)
1407
def open(self, a_bzrdir, _found=False, _override_transport=None):
1408
"""See RepositoryFormat.open().
1410
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1411
repository at a slightly different url
1412
than normal. I.e. during 'upgrade'.
1415
format = RepositoryFormat.find_format(a_bzrdir)
1416
assert format.__class__ == self.__class__
1417
if _override_transport is not None:
1418
repo_transport = _override_transport
1420
repo_transport = a_bzrdir.get_repository_transport(None)
1421
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1422
text_store = self._get_text_store(repo_transport, control_files)
1423
control_store = self._get_control_store(repo_transport, control_files)
1424
_revision_store = self._get_revision_store(repo_transport, control_files)
1425
return KnitRepository(_format=self,
1427
control_files=control_files,
1428
_revision_store=_revision_store,
1429
control_store=control_store,
1430
text_store=text_store)
1433
# formats which have no format string are not discoverable
1434
# and not independently creatable, so are not registered.
1435
RepositoryFormat.register_format(RepositoryFormat7())
1436
_default_format = RepositoryFormatKnit1()
1437
RepositoryFormat.register_format(_default_format)
1438
RepositoryFormat.set_default_format(_default_format)
1439
_legacy_formats = [RepositoryFormat4(),
1440
RepositoryFormat5(),
1441
RepositoryFormat6()]
3359
1444
class InterRepository(InterObject):
3360
1445
"""This class represents operations taking place between two repositories.
3362
1447
Its instances have methods like copy_content and fetch, and contain
3363
references to the source and target repositories these operations can be
1448
references to the source and target repositories these operations can be
3364
1449
carried out on.
3366
1451
Often we will provide convenience methods on 'repository' which carry out
3368
1453
InterRepository.get(other).method_name(parameters).
3371
_walk_to_common_revisions_batch_size = 50
3373
1457
"""The available optimised InterRepository types."""
3375
1459
@needs_write_lock
3376
def copy_content(self, revision_id=None):
1460
def copy_content(self, revision_id=None, basis=None):
3377
1461
"""Make a complete copy of the content in self into destination.
3379
This is a destructive operation! Do not use it on existing
1463
This is a destructive operation! Do not use it on existing
3382
1466
:param revision_id: Only copy the content needed to construct
3383
1467
revision_id and its parents.
1468
:param basis: Copy the needed data preferentially from basis.
3386
1471
self.target.set_make_working_trees(self.source.make_working_trees())
3387
1472
except NotImplementedError:
1474
# grab the basis available data
1475
if basis is not None:
1476
self.target.fetch(basis, revision_id=revision_id)
1477
# but dont bother fetching if we have the needed data now.
1478
if (revision_id not in (None, NULL_REVISION) and
1479
self.target.has_revision(revision_id)):
3389
1481
self.target.fetch(self.source, revision_id=revision_id)
1483
def _double_lock(self, lock_source, lock_target):
1484
"""Take out too locks, rolling back the first if the second throws."""
1489
# we want to ensure that we don't leave source locked by mistake.
1490
# and any error on target should not confuse source.
1491
self.source.unlock()
3391
1494
@needs_write_lock
3392
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
1495
def fetch(self, revision_id=None, pb=None):
3394
1496
"""Fetch the content required to construct revision_id.
3396
The content is copied from self.source to self.target.
1498
The content is copied from source to target.
3398
1500
:param revision_id: if None all content is copied, if NULL_REVISION no
3399
1501
content is copied.
1502
:param pb: optional progress bar to use for progress reports. If not
1503
provided a default one will be created.
1505
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,
1508
from bzrlib.fetch import GenericRepoFetcher
1509
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1510
self.source, self.source._format, self.target, self.target._format)
1511
f = GenericRepoFetcher(to_repository=self.target,
3411
1512
from_repository=self.source,
3412
1513
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()
1515
return f.count_copied, f.failed_revisions
1517
def lock_read(self):
1518
"""Take out a logical read lock.
1520
This will lock the source branch and the target branch. The source gets
1521
a read lock and the target a read lock.
1523
self._double_lock(self.source.lock_read, self.target.lock_read)
1525
def lock_write(self):
1526
"""Take out a logical write lock.
1528
This will lock the source branch and the target branch. The source gets
1529
a read lock and the target a write lock.
1531
self._double_lock(self.source.lock_read, self.target.lock_write)
3468
1533
@needs_read_lock
3469
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1534
def missing_revision_ids(self, revision_id=None):
3470
1535
"""Return the revision ids that source has that target does not.
1537
These are returned in topological order.
3472
1539
: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
1542
# generic, possibly worst case, slow code path.
3482
1543
target_ids = set(self.target.all_revision_ids())
3483
1544
if revision_id is not None:
3484
1545
source_ids = self.source.get_ancestry(revision_id)
3485
if source_ids[0] is not None:
3486
raise AssertionError()
1546
assert source_ids[0] == None
3487
1547
source_ids.pop(0)
3489
1549
source_ids = self.source.all_revision_ids()
3490
1550
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.
1551
# this may look like a no-op: its not. It preserves the ordering
1552
# other_ids had while only returning the members from other_ids
1553
# that we've decided we need.
1554
return [rev_id for rev_id in source_ids if rev_id in result_set]
1557
"""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()
1559
self.target.unlock()
1561
self.source.unlock()
1564
class InterWeaveRepo(InterRepository):
1565
"""Optimised code paths between Weave based repositories."""
1567
_matching_repo_format = RepositoryFormat7()
1568
"""Repository format for testing with."""
3552
1571
def is_compatible(source, target):
3553
1572
"""Be compatible with known Weave formats.
3555
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
1574
We dont test for the stores being of specific types becase that
1575
could lead to confusing results, and there is no need to be
3557
1576
overly general.
3559
from bzrlib.repofmt.weaverepo import (
3565
1579
return (isinstance(source._format, (RepositoryFormat5,
3566
1580
RepositoryFormat6,
3570
1584
RepositoryFormat7)))
3571
1585
except AttributeError:
3574
1588
@needs_write_lock
3575
def copy_content(self, revision_id=None):
1589
def copy_content(self, revision_id=None, basis=None):
3576
1590
"""See InterRepository.copy_content()."""
3577
1591
# weave specific optimised path:
3579
self.target.set_make_working_trees(self.source.make_working_trees())
3580
except (errors.RepositoryUpgradeRequired, NotImplemented):
3582
# FIXME do not peek!
3583
if self.source._transport.listable():
3584
pb = ui.ui_factory.nested_progress_bar()
1592
if basis is not None:
1593
# copy the basis in, then fetch remaining data.
1594
basis.copy_content_into(self.target, revision_id)
1595
# the basis copy_content_into could misset this.
3586
self.target.texts.insert_record_stream(
3587
self.source.texts.get_record_stream(
3588
self.source.texts.keys(), 'topological', False))
3589
pb.update('Copying inventory', 0, 1)
3590
self.target.inventories.insert_record_stream(
3591
self.source.inventories.get_record_stream(
3592
self.source.inventories.keys(), 'topological', False))
3593
self.target.signatures.insert_record_stream(
3594
self.source.signatures.get_record_stream(
3595
self.source.signatures.keys(),
3597
self.target.revisions.insert_record_stream(
3598
self.source.revisions.get_record_stream(
3599
self.source.revisions.keys(),
3600
'topological', True))
1597
self.target.set_make_working_trees(self.source.make_working_trees())
1598
except NotImplementedError:
3604
1600
self.target.fetch(self.source, revision_id=revision_id)
1603
self.target.set_make_working_trees(self.source.make_working_trees())
1604
except NotImplementedError:
1606
# FIXME do not peek!
1607
if self.source.control_files._transport.listable():
1608
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1610
self.target.weave_store.copy_all_ids(
1611
self.source.weave_store,
1613
from_transaction=self.source.get_transaction(),
1614
to_transaction=self.target.get_transaction())
1615
pb.update('copying inventory', 0, 1)
1616
self.target.control_weaves.copy_multi(
1617
self.source.control_weaves, ['inventory'],
1618
from_transaction=self.source.get_transaction(),
1619
to_transaction=self.target.get_transaction())
1620
self.target._revision_store.text_store.copy_all_ids(
1621
self.source._revision_store.text_store,
1626
self.target.fetch(self.source, revision_id=revision_id)
1629
def fetch(self, revision_id=None, pb=None):
1630
"""See InterRepository.fetch()."""
1631
from bzrlib.fetch import GenericRepoFetcher
1632
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1633
self.source, self.source._format, self.target, self.target._format)
1634
f = GenericRepoFetcher(to_repository=self.target,
1635
from_repository=self.source,
1636
last_revision=revision_id,
1638
return f.count_copied, f.failed_revisions
3606
1640
@needs_read_lock
3607
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1641
def missing_revision_ids(self, revision_id=None):
3608
1642
"""See InterRepository.missing_revision_ids()."""
3609
1643
# we want all revisions to satisfy revision_id in source.
3610
# but we don't want to stat every file here and there.
3611
# we want then, all revisions other needs to satisfy revision_id
1644
# but we dont want to stat every file here and there.
1645
# we want then, all revisions other needs to satisfy revision_id
3612
1646
# checked, but not those that we have locally.
3613
# so the first thing is to get a subset of the revisions to
1647
# so the first thing is to get a subset of the revisions to
3614
1648
# satisfy revision_id in source, and then eliminate those that
3615
# we do already have.
3616
# this is slow on high latency connection to self, but as this
3617
# disk format scales terribly for push anyway due to rewriting
1649
# we do already have.
1650
# this is slow on high latency connection to self, but as as this
1651
# disk format scales terribly for push anyway due to rewriting
3618
1652
# inventory.weave, this is considered acceptable.
3619
1653
# - RBC 20060209
3620
1654
if revision_id is not None:
3621
1655
source_ids = self.source.get_ancestry(revision_id)
3622
if source_ids[0] is not None:
3623
raise AssertionError()
1656
assert source_ids[0] == None
3624
1657
source_ids.pop(0)
3626
1659
source_ids = self.source._all_possible_ids()
3627
1660
source_ids_set = set(source_ids)
3628
1661
# source_ids is the worst possible case we may need to pull.
3629
1662
# now we want to filter source_ids against what we actually
3630
# have in target, but don't try to check for existence where we know
1663
# have in target, but dont try to check for existence where we know
3631
1664
# we do not have a revision as that would be pointless.
3632
1665
target_ids = set(self.target._all_possible_ids())
3633
1666
possibly_present_revisions = target_ids.intersection(source_ids_set)
3634
actually_present_revisions = set(
3635
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1667
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3636
1668
required_revisions = source_ids_set.difference(actually_present_revisions)
1669
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3637
1670
if revision_id is not None:
3638
1671
# we used get_ancestry to determine source_ids then we are assured all
3639
1672
# revisions referenced are present as they are installed in topological order.
3640
1673
# and the tip revision was validated by get_ancestry.
3641
result_set = required_revisions
1674
return required_topo_revisions
3643
# if we just grabbed the possibly available ids, then
1676
# if we just grabbed the possibly available ids, then
3644
1677
# we only have an estimate of whats available and need to validate
3645
1678
# 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):
1679
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1682
class InterKnitRepo(InterRepository):
3652
1683
"""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()
1685
_matching_repo_format = RepositoryFormatKnit1()
1686
"""Repository format for testing with."""
3660
1689
def is_compatible(source, target):
3661
1690
"""Be compatible with known Knit formats.
3663
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
1692
We dont test for the stores being of specific types becase that
1693
could lead to confusing results, and there is no need to be
3665
1694
overly general.
3667
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
3669
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
3670
isinstance(target._format, RepositoryFormatKnit))
1697
return (isinstance(source._format, (RepositoryFormatKnit1)) and
1698
isinstance(target._format, (RepositoryFormatKnit1)))
3671
1699
except AttributeError:
3673
return are_knits and InterRepository._same_model(source, target)
1703
def fetch(self, revision_id=None, pb=None):
1704
"""See InterRepository.fetch()."""
1705
from bzrlib.fetch import KnitRepoFetcher
1706
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1707
self.source, self.source._format, self.target, self.target._format)
1708
f = KnitRepoFetcher(to_repository=self.target,
1709
from_repository=self.source,
1710
last_revision=revision_id,
1712
return f.count_copied, f.failed_revisions
3675
1714
@needs_read_lock
3676
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1715
def missing_revision_ids(self, revision_id=None):
3677
1716
"""See InterRepository.missing_revision_ids()."""
3678
1717
if revision_id is not None:
3679
1718
source_ids = self.source.get_ancestry(revision_id)
3680
if source_ids[0] is not None:
3681
raise AssertionError()
1719
assert source_ids[0] == None
3682
1720
source_ids.pop(0)
3684
source_ids = self.source.all_revision_ids()
1722
source_ids = self.source._all_possible_ids()
3685
1723
source_ids_set = set(source_ids)
3686
1724
# source_ids is the worst possible case we may need to pull.
3687
1725
# now we want to filter source_ids against what we actually
3688
# have in target, but don't try to check for existence where we know
1726
# have in target, but dont try to check for existence where we know
3689
1727
# we do not have a revision as that would be pointless.
3690
target_ids = set(self.target.all_revision_ids())
1728
target_ids = set(self.target._all_possible_ids())
3691
1729
possibly_present_revisions = target_ids.intersection(source_ids_set)
3692
actually_present_revisions = set(
3693
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1730
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3694
1731
required_revisions = source_ids_set.difference(actually_present_revisions)
1732
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3695
1733
if revision_id is not None:
3696
1734
# we used get_ancestry to determine source_ids then we are assured all
3697
1735
# revisions referenced are present as they are installed in topological order.
3698
1736
# and the tip revision was validated by get_ancestry.
3699
result_set = required_revisions
1737
return required_topo_revisions
3701
# if we just grabbed the possibly available ids, then
1739
# if we just grabbed the possibly available ids, then
3702
1740
# we only have an estimate of whats available and need to validate
3703
1741
# 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)
1742
return self.source._eliminate_revisions_not_present(required_topo_revisions)
4057
1744
InterRepository.register_optimiser(InterWeaveRepo)
4058
1745
InterRepository.register_optimiser(InterKnitRepo)
1748
class RepositoryTestProviderAdapter(object):
1749
"""A tool to generate a suite testing multiple repository formats at once.
1751
This is done by copying the test once for each transport and injecting
1752
the transport_server, transport_readonly_server, and bzrdir_format and
1753
repository_format classes into each copy. Each copy is also given a new id()
1754
to make it easy to identify.
1757
def __init__(self, transport_server, transport_readonly_server, formats):
1758
self._transport_server = transport_server
1759
self._transport_readonly_server = transport_readonly_server
1760
self._formats = formats
1762
def adapt(self, test):
1763
result = TestSuite()
1764
for repository_format, bzrdir_format in self._formats:
1765
new_test = deepcopy(test)
1766
new_test.transport_server = self._transport_server
1767
new_test.transport_readonly_server = self._transport_readonly_server
1768
new_test.bzrdir_format = bzrdir_format
1769
new_test.repository_format = repository_format
1770
def make_new_test_id():
1771
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
1772
return lambda: new_id
1773
new_test.id = make_new_test_id()
1774
result.addTest(new_test)
1778
class InterRepositoryTestProviderAdapter(object):
1779
"""A tool to generate a suite testing multiple inter repository formats.
1781
This is done by copying the test once for each interrepo provider and injecting
1782
the transport_server, transport_readonly_server, repository_format and
1783
repository_to_format classes into each copy.
1784
Each copy is also given a new id() to make it easy to identify.
1787
def __init__(self, transport_server, transport_readonly_server, formats):
1788
self._transport_server = transport_server
1789
self._transport_readonly_server = transport_readonly_server
1790
self._formats = formats
1792
def adapt(self, test):
1793
result = TestSuite()
1794
for interrepo_class, repository_format, repository_format_to in self._formats:
1795
new_test = deepcopy(test)
1796
new_test.transport_server = self._transport_server
1797
new_test.transport_readonly_server = self._transport_readonly_server
1798
new_test.interrepo_class = interrepo_class
1799
new_test.repository_format = repository_format
1800
new_test.repository_format_to = repository_format_to
1801
def make_new_test_id():
1802
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
1803
return lambda: new_id
1804
new_test.id = make_new_test_id()
1805
result.addTest(new_test)
1809
def default_test_list():
1810
"""Generate the default list of interrepo permutations to test."""
1812
# test the default InterRepository between format 6 and the current
1814
# XXX: robertc 20060220 reinstate this when there are two supported
1815
# formats which do not have an optimal code path between them.
1816
result.append((InterRepository,
1817
RepositoryFormat6(),
1818
RepositoryFormatKnit1()))
1819
for optimiser in InterRepository._optimisers:
1820
result.append((optimiser,
1821
optimiser._matching_repo_format,
1822
optimiser._matching_repo_format
1824
# if there are specific combinations we want to use, we can add them
4061
1829
class CopyConverter(object):
4062
1830
"""A repository conversion tool which just performs a copy of the content.
4064
1832
This is slow but quite reliable.
4070
1838
:param target_format: The format the resulting repository should be.
4072
1840
self.target_format = target_format
4074
1842
def convert(self, repo, pb):
4075
1843
"""Perform the conversion of to_convert, giving feedback via pb.
4077
1845
:param to_convert: The disk object to convert.
4078
1846
:param pb: a progress bar to use for progress information.
4080
pb = ui.ui_factory.nested_progress_bar()
4083
1851
# this is only useful with metadir layouts - separated repo content.
4084
1852
# trigger an assertion if not such
4085
1853
repo._format.get_format_string()
4086
1854
self.repo_dir = repo.bzrdir
4087
pb.update('Moving repository to repository.backup')
1855
self.step('Moving repository to repository.backup')
4088
1856
self.repo_dir.transport.move('repository', 'repository.backup')
4089
1857
backup_transport = self.repo_dir.transport.clone('repository.backup')
4090
repo._format.check_conversion_target(self.target_format)
4091
1858
self.source_repo = repo._format.open(self.repo_dir,
4093
1860
_override_transport=backup_transport)
4094
pb.update('Creating new repository')
1861
self.step('Creating new repository')
4095
1862
converted = self.target_format.initialize(self.repo_dir,
4096
1863
self.source_repo.is_shared())
4097
1864
converted.lock_write()
4099
pb.update('Copying content')
1866
self.step('Copying content into repository.')
4100
1867
self.source_repo.copy_content_into(converted)
4102
1869
converted.unlock()
4103
pb.update('Deleting old repository content')
1870
self.step('Deleting old repository content.')
4104
1871
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')
1872
self.pb.note('repository converted')
1874
def step(self, message):
1875
"""Update the pb by a step."""
1877
self.pb.update(message, self.count, self.total)
1880
class CommitBuilder(object):
1881
"""Provides an interface to build up a commit.
1883
This allows describing a tree to be committed without needing to
1884
know the internals of the format of the repository.
1886
def __init__(self, repository, parents, config, timestamp=None,
1887
timezone=None, committer=None, revprops=None,
1889
"""Initiate a CommitBuilder.
1891
:param repository: Repository to commit to.
1892
:param parents: Revision ids of the parents of the new revision.
1893
:param config: Configuration to use.
1894
:param timestamp: Optional timestamp recorded for commit.
1895
:param timezone: Optional timezone for timestamp.
1896
:param committer: Optional committer to set for commit.
1897
:param revprops: Optional dictionary of revision properties.
1898
:param revision_id: Optional revision id.
1900
self._config = config
1902
if committer is None:
1903
self._committer = self._config.username()
1905
assert isinstance(committer, basestring), type(committer)
1906
self._committer = committer
1908
self.new_inventory = Inventory()
1909
self._new_revision_id = revision_id
1910
self.parents = parents
1911
self.repository = repository
1914
if revprops is not None:
1915
self._revprops.update(revprops)
1917
if timestamp is None:
1918
self._timestamp = time.time()
1920
self._timestamp = long(timestamp)
1922
if timezone is None:
1923
self._timezone = local_time_offset()
1925
self._timezone = int(timezone)
1927
self._generate_revision_if_needed()
1929
def commit(self, message):
1930
"""Make the actual commit.
1932
:return: The revision id of the recorded revision.
1934
rev = Revision(timestamp=self._timestamp,
1935
timezone=self._timezone,
1936
committer=self._committer,
1938
inventory_sha1=self.inv_sha1,
1939
revision_id=self._new_revision_id,
1940
properties=self._revprops)
1941
rev.parent_ids = self.parents
1942
self.repository.add_revision(self._new_revision_id, rev,
1943
self.new_inventory, self._config)
1944
return self._new_revision_id
1946
def finish_inventory(self):
1947
"""Tell the builder that the inventory is finished."""
1948
self.new_inventory.revision = self._new_revision_id
1949
self.inv_sha1 = self.repository.add_inventory(
1950
self._new_revision_id,
1955
def _gen_revision_id(self):
1956
"""Return new revision-id."""
1957
s = '%s-%s-' % (self._config.user_email(),
1958
compact_date(self._timestamp))
1959
s += hexlify(rand_bytes(8))
1962
def _generate_revision_if_needed(self):
1963
"""Create a revision id if None was supplied.
1965
If the repository can not support user-specified revision ids
1966
they should override this function and raise UnsupportedOperation
1967
if _new_revision_id is not None.
1969
:raises: UnsupportedOperation
1971
if self._new_revision_id is None:
1972
self._new_revision_id = self._gen_revision_id()
1974
def record_entry_contents(self, ie, parent_invs, path, tree):
1975
"""Record the content of ie from tree into the commit if needed.
1977
:param ie: An inventory entry present in the commit.
1978
:param parent_invs: The inventories of the parent revisions of the
1980
:param path: The path the entry is at in the tree.
1981
:param tree: The tree which contains this entry and should be used to
1984
self.new_inventory.add(ie)
1986
# ie.revision is always None if the InventoryEntry is considered
1987
# for committing. ie.snapshot will record the correct revision
1988
# which may be the sole parent if it is untouched.
1989
if ie.revision is not None:
1991
previous_entries = ie.find_previous_heads(
1993
self.repository.weave_store,
1994
self.repository.get_transaction())
1995
# we are creating a new revision for ie in the history store
1997
ie.snapshot(self._new_revision_id, path, previous_entries, tree, self)
1999
def modified_directory(self, file_id, file_parents):
2000
"""Record the presence of a symbolic link.
2002
:param file_id: The file_id of the link to record.
2003
:param file_parents: The per-file parent revision ids.
2005
self._add_text_to_weave(file_id, [], file_parents.keys())
2007
def modified_file_text(self, file_id, file_parents,
2008
get_content_byte_lines, text_sha1=None,
2010
"""Record the text of file file_id
2012
:param file_id: The file_id of the file to record the text of.
2013
:param file_parents: The per-file parent revision ids.
2014
:param get_content_byte_lines: A callable which will return the byte
2016
:param text_sha1: Optional SHA1 of the file contents.
2017
:param text_size: Optional size of the file contents.
2019
mutter('storing text of file {%s} in revision {%s} into %r',
2020
file_id, self._new_revision_id, self.repository.weave_store)
2021
# special case to avoid diffing on renames or
2023
if (len(file_parents) == 1
2024
and text_sha1 == file_parents.values()[0].text_sha1
2025
and text_size == file_parents.values()[0].text_size):
2026
previous_ie = file_parents.values()[0]
2027
versionedfile = self.repository.weave_store.get_weave(file_id,
2028
self.repository.get_transaction())
2029
versionedfile.clone_text(self._new_revision_id,
2030
previous_ie.revision, file_parents.keys())
2031
return text_sha1, text_size
2033
new_lines = get_content_byte_lines()
2034
# TODO: Rather than invoking sha_strings here, _add_text_to_weave
2035
# should return the SHA1 and size
2036
self._add_text_to_weave(file_id, new_lines, file_parents.keys())
2037
return bzrlib.osutils.sha_strings(new_lines), \
2038
sum(map(len, new_lines))
2040
def modified_link(self, file_id, file_parents, link_target):
2041
"""Record the presence of a symbolic link.
2043
:param file_id: The file_id of the link to record.
2044
:param file_parents: The per-file parent revision ids.
2045
:param link_target: Target location of this link.
2047
self._add_text_to_weave(file_id, [], file_parents.keys())
2049
def _add_text_to_weave(self, file_id, new_lines, parents):
2050
versionedfile = self.repository.weave_store.get_weave_or_empty(
2051
file_id, self.repository.get_transaction())
2052
versionedfile.add_lines(self._new_revision_id, parents, new_lines)
2053
versionedfile.clear_cache()
2056
# Copied from xml.sax.saxutils
4131
2057
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:
2058
"""Unescape &, <, and > in a string of data.
2060
data = data.replace("<", "<")
2061
data = data.replace(">", ">")
2062
# must do ampersand last
2063
return data.replace("&", "&")