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# Copyright (C) 2005, 2006, 2007, 2008 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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revision as _mod_revision,
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from bzrlib.bundle import serializer
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from bzrlib.revisiontree import RevisionTree
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from bzrlib.store.versioned import VersionedFileStore
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from bzrlib.testament import Testament
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from bzrlib import registry
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.inter import InterObject
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from bzrlib.inventory import Inventory, InventoryDirectory, ROOT_ID
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from bzrlib.symbol_versioning import (
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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._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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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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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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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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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 _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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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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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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if (# if the file length changed we have to store:
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parent_entry.text_size != content_summary[1] or
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# 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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lines = file_obj.readlines()
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ie.text_sha1, ie.text_size = self._add_text_to_weave(
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ie.file_id, lines, 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, lines, 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, lines, 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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self._add_text_to_weave(ie.file_id, lines, heads, None)
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raise NotImplementedError('unknown kind')
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ie.revision = self._new_revision_id
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return self._get_delta(ie, basis_inv, path), True, fingerprint
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def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
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# Note: as we read the content directly from the tree, we know its not
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# been turned into unicode or badly split - but a broken tree
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# implementation could give us bad output from readlines() so this is
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# not a guarantee of safety. What would be better is always checking
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# the content during test suite execution. RBC 20070912
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parent_keys = tuple((file_id, parent) for parent in parents)
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return self.repository.texts.add_lines(
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(file_id, self._new_revision_id), parent_keys, new_lines,
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nostore_sha=nostore_sha, random_id=self.random_revid,
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check_content=False)[0:2]
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class RootCommitBuilder(CommitBuilder):
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"""This commitbuilder actually records the root id"""
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# the root entry gets versioned properly by this builder.
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_versioned_root = True
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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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######################################################################
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class Repository(object):
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"""Repository holding history for one or more branches.
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The repository holds and retrieves historical information including
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revisions and file history. It's normally accessed only by the Branch,
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which views a particular line of development through that history.
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The Repository builds on top of some byte storage facilies (the revisions,
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signatures, inventories and texts attributes) and a Transport, which
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respectively provide byte storage and a means to access the (possibly
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The byte storage facilities are addressed via tuples, which we refer to
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as 'keys' throughout the code base. Revision_keys, inventory_keys and
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signature_keys are all 1-tuples: (revision_id,). text_keys are two-tuples:
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(file_id, revision_id). We use this interface because it allows low
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friction with the underlying code that implements disk indices, network
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encoding and other parts of bzrlib.
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:ivar revisions: A bzrlib.versionedfile.VersionedFiles instance containing
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the serialised revisions for the repository. This can be used to obtain
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revision graph information or to access raw serialised revisions.
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The result of trying to insert data into the repository via this store
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is undefined: it should be considered read-only except for implementors
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:ivar signatures: A bzrlib.versionedfile.VersionedFiles instance containing
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the serialised signatures for the repository. This can be used to
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obtain access to raw serialised signatures. The result of trying to
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insert data into the repository via this store is undefined: it should
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be considered read-only except for implementors of repositories.
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:ivar inventories: A bzrlib.versionedfile.VersionedFiles instance containing
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the serialised inventories for the repository. This can be used to
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obtain unserialised inventories. The result of trying to insert data
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into the repository via this store is undefined: it should be
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considered read-only except for implementors of repositories.
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:ivar texts: A bzrlib.versionedfile.VersionedFiles instance containing the
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texts of files and directories for the repository. This can be used to
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obtain file texts or file graphs. Note that Repository.iter_file_bytes
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is usually a better interface for accessing file texts.
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The result of trying to insert data into the repository via this store
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is undefined: it should be considered read-only except for implementors
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:ivar _transport: Transport for file access to repository, typically
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pointing to .bzr/repository.
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# What class to use for a CommitBuilder. Often its simpler to change this
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# in a Repository class subclass rather than to override
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# get_commit_builder.
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_commit_builder_class = CommitBuilder
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# The search regex used by xml based repositories to determine what things
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# where changed in a single commit.
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_file_ids_altered_regex = lazy_regex.lazy_compile(
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r'file_id="(?P<file_id>[^"]+)"'
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r'.* revision="(?P<revision_id>[^"]+)"'
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def abort_write_group(self, suppress_errors=False):
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"""Commit the contents accrued within the current write group.
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:param suppress_errors: if true, abort_write_group will catch and log
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unexpected errors that happen during the abort, rather than
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allowing them to propagate. Defaults to False.
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:seealso: start_write_group.
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if self._write_group is not self.get_transaction():
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# has an unlock or relock occured ?
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raise errors.BzrError('mismatched lock context and write group.')
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self._abort_write_group()
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except Exception, exc:
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self._write_group = None
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if not suppress_errors:
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mutter('abort_write_group failed')
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log_exception_quietly()
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note('bzr: ERROR (ignored): %s', exc)
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self._write_group = None
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def _abort_write_group(self):
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"""Template method for per-repository write group cleanup.
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This is called during abort before the write group is considered to be
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finished and should cleanup any internal state accrued during the write
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group. There is no requirement that data handed to the repository be
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*not* made available - this is not a rollback - but neither should any
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attempt be made to ensure that data added is fully commited. Abort is
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invoked when an error has occured so futher disk or network operations
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may not be possible or may error and if possible should not be
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def add_fallback_repository(self, repository):
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"""Add a repository to use for looking up data not held locally.
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:param repository: A repository.
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if not self._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self._format, self.base)
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self._check_fallback_repository(repository)
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self._fallback_repositories.append(repository)
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self.texts.add_fallback_versioned_files(repository.texts)
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self.inventories.add_fallback_versioned_files(repository.inventories)
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self.revisions.add_fallback_versioned_files(repository.revisions)
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self.signatures.add_fallback_versioned_files(repository.signatures)
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self._fetch_order = 'topological'
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def _check_fallback_repository(self, repository):
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"""Check that this repository can fallback to repository safely.
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Raise an error if not.
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:param repository: A repository to fallback to.
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return InterRepository._assert_same_model(self, repository)
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def add_inventory(self, revision_id, inv, parents):
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"""Add the inventory inv to the repository as revision_id.
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:param parents: The revision ids of the parents that revision_id
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is known to have and are in the repository already.
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:returns: The validator(which is a sha1 digest, though what is sha'd is
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repository format specific) of the serialized inventory.
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if not self.is_in_write_group():
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raise AssertionError("%r not in write group" % (self,))
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_mod_revision.check_not_reserved_id(revision_id)
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if not (inv.revision_id is None or inv.revision_id == revision_id):
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raise AssertionError(
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"Mismatch between inventory revision"
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" id and insertion revid (%r, %r)"
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% (inv.revision_id, revision_id))
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raise AssertionError()
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inv_lines = self._serialise_inventory_to_lines(inv)
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return self._inventory_add_lines(revision_id, parents,
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inv_lines, check_content=False)
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def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
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"""Add a new inventory expressed as a delta against another revision.
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:param basis_revision_id: The inventory id the delta was created
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against. (This does not have to be a direct parent.)
680
:param delta: The inventory delta (see Inventory.apply_delta for
682
:param new_revision_id: The revision id that the inventory is being
684
:param parents: The revision ids of the parents that revision_id is
685
known to have and are in the repository already. These are supplied
686
for repositories that depend on the inventory graph for revision
687
graph access, as well as for those that pun ancestry with delta
690
:returns: (validator, new_inv)
691
The validator(which is a sha1 digest, though what is sha'd is
692
repository format specific) of the serialized inventory, and the
695
if not self.is_in_write_group():
696
raise AssertionError("%r not in write group" % (self,))
697
_mod_revision.check_not_reserved_id(new_revision_id)
698
basis_tree = self.revision_tree(basis_revision_id)
699
basis_tree.lock_read()
701
# Note that this mutates the inventory of basis_tree, which not all
702
# inventory implementations may support: A better idiom would be to
703
# return a new inventory, but as there is no revision tree cache in
704
# repository this is safe for now - RBC 20081013
705
basis_inv = basis_tree.inventory
706
basis_inv.apply_delta(delta)
707
basis_inv.revision_id = new_revision_id
708
return (self.add_inventory(new_revision_id, basis_inv, parents),
713
def _inventory_add_lines(self, revision_id, parents, lines,
715
"""Store lines in inv_vf and return the sha1 of the inventory."""
716
parents = [(parent,) for parent in parents]
717
return self.inventories.add_lines((revision_id,), parents, lines,
718
check_content=check_content)[0]
720
def add_revision(self, revision_id, rev, inv=None, config=None):
721
"""Add rev to the revision store as revision_id.
723
:param revision_id: the revision id to use.
724
:param rev: The revision object.
725
:param inv: The inventory for the revision. if None, it will be looked
726
up in the inventory storer
727
:param config: If None no digital signature will be created.
728
If supplied its signature_needed method will be used
729
to determine if a signature should be made.
731
# TODO: jam 20070210 Shouldn't we check rev.revision_id and
733
_mod_revision.check_not_reserved_id(revision_id)
734
if config is not None and config.signature_needed():
736
inv = self.get_inventory(revision_id)
737
plaintext = Testament(rev, inv).as_short_text()
738
self.store_revision_signature(
739
gpg.GPGStrategy(config), plaintext, revision_id)
740
# check inventory present
741
if not self.inventories.get_parent_map([(revision_id,)]):
743
raise errors.WeaveRevisionNotPresent(revision_id,
746
# yes, this is not suitable for adding with ghosts.
747
rev.inventory_sha1 = self.add_inventory(revision_id, inv,
751
rev.inventory_sha1 = self.inventories.get_sha1s([key])[key]
752
self._add_revision(rev)
754
def _add_revision(self, revision):
755
text = self._serializer.write_revision_to_string(revision)
756
key = (revision.revision_id,)
757
parents = tuple((parent,) for parent in revision.parent_ids)
758
self.revisions.add_lines(key, parents, osutils.split_lines(text))
760
def all_revision_ids(self):
761
"""Returns a list of all the revision ids in the repository.
763
This is conceptually deprecated because code should generally work on
764
the graph reachable from a particular revision, and ignore any other
765
revisions that might be present. There is no direct replacement
768
if 'evil' in debug.debug_flags:
769
mutter_callsite(2, "all_revision_ids is linear with history.")
770
return self._all_revision_ids()
772
def _all_revision_ids(self):
773
"""Returns a list of all the revision ids in the repository.
775
These are in as much topological order as the underlying store can
778
raise NotImplementedError(self._all_revision_ids)
780
def break_lock(self):
781
"""Break a lock if one is present from another instance.
783
Uses the ui factory to ask for confirmation if the lock may be from
786
self.control_files.break_lock()
789
def _eliminate_revisions_not_present(self, revision_ids):
790
"""Check every revision id in revision_ids to see if we have it.
792
Returns a set of the present revisions.
795
graph = self.get_graph()
796
parent_map = graph.get_parent_map(revision_ids)
797
# The old API returned a list, should this actually be a set?
798
return parent_map.keys()
801
def create(a_bzrdir):
802
"""Construct the current default format repository in a_bzrdir."""
803
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
805
def __init__(self, _format, a_bzrdir, control_files):
806
"""instantiate a Repository.
808
:param _format: The format of the repository on disk.
809
:param a_bzrdir: The BzrDir of the repository.
811
In the future we will have a single api for all stores for
812
getting file texts, inventories and revisions, then
813
this construct will accept instances of those things.
815
super(Repository, self).__init__()
816
self._format = _format
817
# the following are part of the public API for Repository:
818
self.bzrdir = a_bzrdir
819
self.control_files = control_files
820
self._transport = control_files._transport
821
self.base = self._transport.base
823
self._reconcile_does_inventory_gc = True
824
self._reconcile_fixes_text_parents = False
825
self._reconcile_backsup_inventory = True
826
# not right yet - should be more semantically clear ?
828
# TODO: make sure to construct the right store classes, etc, depending
829
# on whether escaping is required.
830
self._warn_if_deprecated()
831
self._write_group = None
832
# Additional places to query for data.
833
self._fallback_repositories = []
834
# What order should fetch operations request streams in?
835
# The default is unordered as that is the cheapest for an origin to
837
self._fetch_order = 'unordered'
838
# Does this repository use deltas that can be fetched as-deltas ?
839
# (E.g. knits, where the knit deltas can be transplanted intact.
840
# We default to False, which will ensure that enough data to get
841
# a full text out of any fetch stream will be grabbed.
842
self._fetch_uses_deltas = False
843
# Should fetch trigger a reconcile after the fetch? Only needed for
844
# some repository formats that can suffer internal inconsistencies.
845
self._fetch_reconcile = False
846
# An InventoryEntry cache, used during deserialization
847
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
850
return '%s(%r)' % (self.__class__.__name__,
853
def has_same_location(self, other):
854
"""Returns a boolean indicating if this repository is at the same
855
location as another repository.
857
This might return False even when two repository objects are accessing
858
the same physical repository via different URLs.
860
if self.__class__ is not other.__class__:
862
return (self._transport.base == other._transport.base)
864
def is_in_write_group(self):
865
"""Return True if there is an open write group.
867
:seealso: start_write_group.
869
return self._write_group is not None
872
return self.control_files.is_locked()
874
def is_write_locked(self):
875
"""Return True if this object is write locked."""
876
return self.is_locked() and self.control_files._lock_mode == 'w'
878
def lock_write(self, token=None):
879
"""Lock this repository for writing.
881
This causes caching within the repository obejct to start accumlating
882
data during reads, and allows a 'write_group' to be obtained. Write
883
groups must be used for actual data insertion.
885
:param token: if this is already locked, then lock_write will fail
886
unless the token matches the existing lock.
887
:returns: a token if this instance supports tokens, otherwise None.
888
:raises TokenLockingNotSupported: when a token is given but this
889
instance doesn't support using token locks.
890
:raises MismatchedToken: if the specified token doesn't match the token
891
of the existing lock.
892
:seealso: start_write_group.
894
A token should be passed in if you know that you have locked the object
895
some other way, and need to synchronise this object's state with that
898
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
900
result = self.control_files.lock_write(token=token)
901
for repo in self._fallback_repositories:
902
# Writes don't affect fallback repos
908
self.control_files.lock_read()
909
for repo in self._fallback_repositories:
913
def get_physical_lock_status(self):
914
return self.control_files.get_physical_lock_status()
916
def leave_lock_in_place(self):
917
"""Tell this repository not to release the physical lock when this
920
If lock_write doesn't return a token, then this method is not supported.
922
self.control_files.leave_in_place()
924
def dont_leave_lock_in_place(self):
925
"""Tell this repository to release the physical lock when this
926
object is unlocked, even if it didn't originally acquire it.
928
If lock_write doesn't return a token, then this method is not supported.
930
self.control_files.dont_leave_in_place()
933
def gather_stats(self, revid=None, committers=None):
934
"""Gather statistics from a revision id.
936
:param revid: The revision id to gather statistics from, if None, then
937
no revision specific statistics are gathered.
938
:param committers: Optional parameter controlling whether to grab
939
a count of committers from the revision specific statistics.
940
:return: A dictionary of statistics. Currently this contains:
941
committers: The number of committers if requested.
942
firstrev: A tuple with timestamp, timezone for the penultimate left
943
most ancestor of revid, if revid is not the NULL_REVISION.
944
latestrev: A tuple with timestamp, timezone for revid, if revid is
945
not the NULL_REVISION.
946
revisions: The total revision count in the repository.
947
size: An estimate disk size of the repository in bytes.
950
if revid and committers:
951
result['committers'] = 0
952
if revid and revid != _mod_revision.NULL_REVISION:
954
all_committers = set()
955
revisions = self.get_ancestry(revid)
956
# pop the leading None
958
first_revision = None
960
# ignore the revisions in the middle - just grab first and last
961
revisions = revisions[0], revisions[-1]
962
for revision in self.get_revisions(revisions):
963
if not first_revision:
964
first_revision = revision
966
all_committers.add(revision.committer)
967
last_revision = revision
969
result['committers'] = len(all_committers)
970
result['firstrev'] = (first_revision.timestamp,
971
first_revision.timezone)
972
result['latestrev'] = (last_revision.timestamp,
973
last_revision.timezone)
975
# now gather global repository information
976
# XXX: This is available for many repos regardless of listability.
977
if self.bzrdir.root_transport.listable():
978
# XXX: do we want to __define len__() ?
979
# Maybe the versionedfiles object should provide a different
980
# method to get the number of keys.
981
result['revisions'] = len(self.revisions.keys())
985
def find_branches(self, using=False):
986
"""Find branches underneath this repository.
988
This will include branches inside other branches.
990
:param using: If True, list only branches using this repository.
992
if using and not self.is_shared():
994
return [self.bzrdir.open_branch()]
995
except errors.NotBranchError:
997
class Evaluator(object):
1000
self.first_call = True
1002
def __call__(self, bzrdir):
1003
# On the first call, the parameter is always the bzrdir
1004
# containing the current repo.
1005
if not self.first_call:
1007
repository = bzrdir.open_repository()
1008
except errors.NoRepositoryPresent:
1011
return False, (None, repository)
1012
self.first_call = False
1014
value = (bzrdir.open_branch(), None)
1015
except errors.NotBranchError:
1016
value = (None, None)
1020
for branch, repository in bzrdir.BzrDir.find_bzrdirs(
1021
self.bzrdir.root_transport, evaluate=Evaluator()):
1022
if branch is not None:
1023
branches.append(branch)
1024
if not using and repository is not None:
1025
branches.extend(repository.find_branches())
1029
def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
1030
"""Return the revision ids that other has that this does not.
1032
These are returned in topological order.
1034
revision_id: only return revision ids included by revision_id.
1036
return InterRepository.get(other, self).search_missing_revision_ids(
1037
revision_id, find_ghosts)
1039
@deprecated_method(one_two)
1041
def missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
1042
"""Return the revision ids that other has that this does not.
1044
These are returned in topological order.
1046
revision_id: only return revision ids included by revision_id.
1048
keys = self.search_missing_revision_ids(
1049
other, revision_id, find_ghosts).get_keys()
1052
parents = other.get_graph().get_parent_map(keys)
1055
return tsort.topo_sort(parents)
1059
"""Open the repository rooted at base.
1061
For instance, if the repository is at URL/.bzr/repository,
1062
Repository.open(URL) -> a Repository instance.
1064
control = bzrdir.BzrDir.open(base)
1065
return control.open_repository()
1067
def copy_content_into(self, destination, revision_id=None):
1068
"""Make a complete copy of the content in self into destination.
1070
This is a destructive operation! Do not use it on existing
1073
return InterRepository.get(self, destination).copy_content(revision_id)
1075
def commit_write_group(self):
1076
"""Commit the contents accrued within the current write group.
1078
:seealso: start_write_group.
1080
if self._write_group is not self.get_transaction():
1081
# has an unlock or relock occured ?
1082
raise errors.BzrError('mismatched lock context %r and '
1084
(self.get_transaction(), self._write_group))
1085
self._commit_write_group()
1086
self._write_group = None
1088
def _commit_write_group(self):
1089
"""Template method for per-repository write group cleanup.
1091
This is called before the write group is considered to be
1092
finished and should ensure that all data handed to the repository
1093
for writing during the write group is safely committed (to the
1094
extent possible considering file system caching etc).
1097
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False):
1098
"""Fetch the content required to construct revision_id from source.
1100
If revision_id is None all content is copied.
1101
:param find_ghosts: Find and copy revisions in the source that are
1102
ghosts in the target (and not reachable directly by walking out to
1103
the first-present revision in target from revision_id).
1105
# fast path same-url fetch operations
1106
if self.has_same_location(source):
1107
# check that last_revision is in 'from' and then return a
1109
if (revision_id is not None and
1110
not _mod_revision.is_null(revision_id)):
1111
self.get_revision(revision_id)
1113
# if there is no specific appropriate InterRepository, this will get
1114
# the InterRepository base class, which raises an
1115
# IncompatibleRepositories when asked to fetch.
1116
inter = InterRepository.get(source, self)
1117
return inter.fetch(revision_id=revision_id, pb=pb,
1118
find_ghosts=find_ghosts)
1120
def create_bundle(self, target, base, fileobj, format=None):
1121
return serializer.write_bundle(self, target, base, fileobj, format)
1123
def get_commit_builder(self, branch, parents, config, timestamp=None,
1124
timezone=None, committer=None, revprops=None,
1126
"""Obtain a CommitBuilder for this repository.
1128
:param branch: Branch to commit to.
1129
:param parents: Revision ids of the parents of the new revision.
1130
:param config: Configuration to use.
1131
:param timestamp: Optional timestamp recorded for commit.
1132
:param timezone: Optional timezone for timestamp.
1133
:param committer: Optional committer to set for commit.
1134
:param revprops: Optional dictionary of revision properties.
1135
:param revision_id: Optional revision id.
1137
result = self._commit_builder_class(self, parents, config,
1138
timestamp, timezone, committer, revprops, revision_id)
1139
self.start_write_group()
1143
if (self.control_files._lock_count == 1 and
1144
self.control_files._lock_mode == 'w'):
1145
if self._write_group is not None:
1146
self.abort_write_group()
1147
self.control_files.unlock()
1148
raise errors.BzrError(
1149
'Must end write groups before releasing write locks.')
1150
self.control_files.unlock()
1151
if self.control_files._lock_count == 0:
1152
self._inventory_entry_cache.clear()
1153
for repo in self._fallback_repositories:
1157
def clone(self, a_bzrdir, revision_id=None):
1158
"""Clone this repository into a_bzrdir using the current format.
1160
Currently no check is made that the format of this repository and
1161
the bzrdir format are compatible. FIXME RBC 20060201.
1163
:return: The newly created destination repository.
1165
# TODO: deprecate after 0.16; cloning this with all its settings is
1166
# probably not very useful -- mbp 20070423
1167
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
1168
self.copy_content_into(dest_repo, revision_id)
1171
def start_write_group(self):
1172
"""Start a write group in the repository.
1174
Write groups are used by repositories which do not have a 1:1 mapping
1175
between file ids and backend store to manage the insertion of data from
1176
both fetch and commit operations.
1178
A write lock is required around the start_write_group/commit_write_group
1179
for the support of lock-requiring repository formats.
1181
One can only insert data into a repository inside a write group.
1185
if not self.is_write_locked():
1186
raise errors.NotWriteLocked(self)
1187
if self._write_group:
1188
raise errors.BzrError('already in a write group')
1189
self._start_write_group()
1190
# so we can detect unlock/relock - the write group is now entered.
1191
self._write_group = self.get_transaction()
1193
def _start_write_group(self):
1194
"""Template method for per-repository write group startup.
1196
This is called before the write group is considered to be
1201
def sprout(self, to_bzrdir, revision_id=None):
1202
"""Create a descendent repository for new development.
1204
Unlike clone, this does not copy the settings of the repository.
1206
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1207
dest_repo.fetch(self, revision_id=revision_id)
1210
def _create_sprouting_repo(self, a_bzrdir, shared):
1211
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1212
# use target default format.
1213
dest_repo = a_bzrdir.create_repository()
1215
# Most control formats need the repository to be specifically
1216
# created, but on some old all-in-one formats it's not needed
1218
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1219
except errors.UninitializableFormat:
1220
dest_repo = a_bzrdir.open_repository()
1224
def has_revision(self, revision_id):
1225
"""True if this repository has a copy of the revision."""
1226
return revision_id in self.has_revisions((revision_id,))
1229
def has_revisions(self, revision_ids):
1230
"""Probe to find out the presence of multiple revisions.
1232
:param revision_ids: An iterable of revision_ids.
1233
:return: A set of the revision_ids that were present.
1235
parent_map = self.revisions.get_parent_map(
1236
[(rev_id,) for rev_id in revision_ids])
1238
if _mod_revision.NULL_REVISION in revision_ids:
1239
result.add(_mod_revision.NULL_REVISION)
1240
result.update([key[0] for key in parent_map])
1244
def get_revision(self, revision_id):
1245
"""Return the Revision object for a named revision."""
1246
return self.get_revisions([revision_id])[0]
1249
def get_revision_reconcile(self, revision_id):
1250
"""'reconcile' helper routine that allows access to a revision always.
1252
This variant of get_revision does not cross check the weave graph
1253
against the revision one as get_revision does: but it should only
1254
be used by reconcile, or reconcile-alike commands that are correcting
1255
or testing the revision graph.
1257
return self._get_revisions([revision_id])[0]
1260
def get_revisions(self, revision_ids):
1261
"""Get many revisions at once."""
1262
return self._get_revisions(revision_ids)
1265
def _get_revisions(self, revision_ids):
1266
"""Core work logic to get many revisions without sanity checks."""
1267
for rev_id in revision_ids:
1268
if not rev_id or not isinstance(rev_id, basestring):
1269
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1270
keys = [(key,) for key in revision_ids]
1271
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1273
for record in stream:
1274
if record.storage_kind == 'absent':
1275
raise errors.NoSuchRevision(self, record.key[0])
1276
text = record.get_bytes_as('fulltext')
1277
rev = self._serializer.read_revision_from_string(text)
1278
revs[record.key[0]] = rev
1279
return [revs[revid] for revid in revision_ids]
1282
def get_revision_xml(self, revision_id):
1283
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1284
# would have already do it.
1285
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1286
rev = self.get_revision(revision_id)
1287
rev_tmp = cStringIO.StringIO()
1288
# the current serializer..
1289
self._serializer.write_revision(rev, rev_tmp)
1291
return rev_tmp.getvalue()
1293
def get_deltas_for_revisions(self, revisions):
1294
"""Produce a generator of revision deltas.
1296
Note that the input is a sequence of REVISIONS, not revision_ids.
1297
Trees will be held in memory until the generator exits.
1298
Each delta is relative to the revision's lefthand predecessor.
1300
required_trees = set()
1301
for revision in revisions:
1302
required_trees.add(revision.revision_id)
1303
required_trees.update(revision.parent_ids[:1])
1304
trees = dict((t.get_revision_id(), t) for
1305
t in self.revision_trees(required_trees))
1306
for revision in revisions:
1307
if not revision.parent_ids:
1308
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1310
old_tree = trees[revision.parent_ids[0]]
1311
yield trees[revision.revision_id].changes_from(old_tree)
1314
def get_revision_delta(self, revision_id):
1315
"""Return the delta for one revision.
1317
The delta is relative to the left-hand predecessor of the
1320
r = self.get_revision(revision_id)
1321
return list(self.get_deltas_for_revisions([r]))[0]
1324
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1325
signature = gpg_strategy.sign(plaintext)
1326
self.add_signature_text(revision_id, signature)
1329
def add_signature_text(self, revision_id, signature):
1330
self.signatures.add_lines((revision_id,), (),
1331
osutils.split_lines(signature))
1333
def find_text_key_references(self):
1334
"""Find the text key references within the repository.
1336
:return: a dictionary mapping (file_id, revision_id) tuples to altered file-ids to an iterable of
1337
revision_ids. Each altered file-ids has the exact revision_ids that
1338
altered it listed explicitly.
1339
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1340
to whether they were referred to by the inventory of the
1341
revision_id that they contain. The inventory texts from all present
1342
revision ids are assessed to generate this report.
1344
revision_keys = self.revisions.keys()
1345
w = self.inventories
1346
pb = ui.ui_factory.nested_progress_bar()
1348
return self._find_text_key_references_from_xml_inventory_lines(
1349
w.iter_lines_added_or_present_in_keys(revision_keys, pb=pb))
1353
def _find_text_key_references_from_xml_inventory_lines(self,
1355
"""Core routine for extracting references to texts from inventories.
1357
This performs the translation of xml lines to revision ids.
1359
:param line_iterator: An iterator of lines, origin_version_id
1360
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1361
to whether they were referred to by the inventory of the
1362
revision_id that they contain. Note that if that revision_id was
1363
not part of the line_iterator's output then False will be given -
1364
even though it may actually refer to that key.
1366
if not self._serializer.support_altered_by_hack:
1367
raise AssertionError(
1368
"_find_text_key_references_from_xml_inventory_lines only "
1369
"supported for branches which store inventory as unnested xml"
1370
", not on %r" % self)
1373
# this code needs to read every new line in every inventory for the
1374
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
1375
# not present in one of those inventories is unnecessary but not
1376
# harmful because we are filtering by the revision id marker in the
1377
# inventory lines : we only select file ids altered in one of those
1378
# revisions. We don't need to see all lines in the inventory because
1379
# only those added in an inventory in rev X can contain a revision=X
1381
unescape_revid_cache = {}
1382
unescape_fileid_cache = {}
1384
# jam 20061218 In a big fetch, this handles hundreds of thousands
1385
# of lines, so it has had a lot of inlining and optimizing done.
1386
# Sorry that it is a little bit messy.
1387
# Move several functions to be local variables, since this is a long
1389
search = self._file_ids_altered_regex.search
1390
unescape = _unescape_xml
1391
setdefault = result.setdefault
1392
for line, line_key in line_iterator:
1393
match = search(line)
1396
# One call to match.group() returning multiple items is quite a
1397
# bit faster than 2 calls to match.group() each returning 1
1398
file_id, revision_id = match.group('file_id', 'revision_id')
1400
# Inlining the cache lookups helps a lot when you make 170,000
1401
# lines and 350k ids, versus 8.4 unique ids.
1402
# Using a cache helps in 2 ways:
1403
# 1) Avoids unnecessary decoding calls
1404
# 2) Re-uses cached strings, which helps in future set and
1406
# (2) is enough that removing encoding entirely along with
1407
# the cache (so we are using plain strings) results in no
1408
# performance improvement.
1410
revision_id = unescape_revid_cache[revision_id]
1412
unescaped = unescape(revision_id)
1413
unescape_revid_cache[revision_id] = unescaped
1414
revision_id = unescaped
1416
# Note that unconditionally unescaping means that we deserialise
1417
# every fileid, which for general 'pull' is not great, but we don't
1418
# really want to have some many fulltexts that this matters anyway.
1421
file_id = unescape_fileid_cache[file_id]
1423
unescaped = unescape(file_id)
1424
unescape_fileid_cache[file_id] = unescaped
1427
key = (file_id, revision_id)
1428
setdefault(key, False)
1429
if revision_id == line_key[-1]:
1433
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
1435
"""Helper routine for fileids_altered_by_revision_ids.
1437
This performs the translation of xml lines to revision ids.
1439
:param line_iterator: An iterator of lines, origin_version_id
1440
:param revision_ids: The revision ids to filter for. This should be a
1441
set or other type which supports efficient __contains__ lookups, as
1442
the revision id from each parsed line will be looked up in the
1443
revision_ids filter.
1444
:return: a dictionary mapping altered file-ids to an iterable of
1445
revision_ids. Each altered file-ids has the exact revision_ids that
1446
altered it listed explicitly.
1449
setdefault = result.setdefault
1451
self._find_text_key_references_from_xml_inventory_lines(
1452
line_iterator).iterkeys():
1453
# once data is all ensured-consistent; then this is
1454
# if revision_id == version_id
1455
if key[-1:] in revision_ids:
1456
setdefault(key[0], set()).add(key[-1])
1459
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
1460
"""Find the file ids and versions affected by revisions.
1462
:param revisions: an iterable containing revision ids.
1463
:param _inv_weave: The inventory weave from this repository or None.
1464
If None, the inventory weave will be opened automatically.
1465
:return: a dictionary mapping altered file-ids to an iterable of
1466
revision_ids. Each altered file-ids has the exact revision_ids that
1467
altered it listed explicitly.
1469
selected_keys = set((revid,) for revid in revision_ids)
1470
w = _inv_weave or self.inventories
1471
pb = ui.ui_factory.nested_progress_bar()
1473
return self._find_file_ids_from_xml_inventory_lines(
1474
w.iter_lines_added_or_present_in_keys(
1475
selected_keys, pb=pb),
1480
def iter_files_bytes(self, desired_files):
1481
"""Iterate through file versions.
1483
Files will not necessarily be returned in the order they occur in
1484
desired_files. No specific order is guaranteed.
1486
Yields pairs of identifier, bytes_iterator. identifier is an opaque
1487
value supplied by the caller as part of desired_files. It should
1488
uniquely identify the file version in the caller's context. (Examples:
1489
an index number or a TreeTransform trans_id.)
1491
bytes_iterator is an iterable of bytestrings for the file. The
1492
kind of iterable and length of the bytestrings are unspecified, but for
1493
this implementation, it is a list of bytes produced by
1494
VersionedFile.get_record_stream().
1496
:param desired_files: a list of (file_id, revision_id, identifier)
1499
transaction = self.get_transaction()
1501
for file_id, revision_id, callable_data in desired_files:
1502
text_keys[(file_id, revision_id)] = callable_data
1503
for record in self.texts.get_record_stream(text_keys, 'unordered', True):
1504
if record.storage_kind == 'absent':
1505
raise errors.RevisionNotPresent(record.key, self)
1506
yield text_keys[record.key], record.get_bytes_as('fulltext')
1508
def _generate_text_key_index(self, text_key_references=None,
1510
"""Generate a new text key index for the repository.
1512
This is an expensive function that will take considerable time to run.
1514
:return: A dict mapping text keys ((file_id, revision_id) tuples) to a
1515
list of parents, also text keys. When a given key has no parents,
1516
the parents list will be [NULL_REVISION].
1518
# All revisions, to find inventory parents.
1519
if ancestors is None:
1520
graph = self.get_graph()
1521
ancestors = graph.get_parent_map(self.all_revision_ids())
1522
if text_key_references is None:
1523
text_key_references = self.find_text_key_references()
1524
pb = ui.ui_factory.nested_progress_bar()
1526
return self._do_generate_text_key_index(ancestors,
1527
text_key_references, pb)
1531
def _do_generate_text_key_index(self, ancestors, text_key_references, pb):
1532
"""Helper for _generate_text_key_index to avoid deep nesting."""
1533
revision_order = tsort.topo_sort(ancestors)
1534
invalid_keys = set()
1536
for revision_id in revision_order:
1537
revision_keys[revision_id] = set()
1538
text_count = len(text_key_references)
1539
# a cache of the text keys to allow reuse; costs a dict of all the
1540
# keys, but saves a 2-tuple for every child of a given key.
1542
for text_key, valid in text_key_references.iteritems():
1544
invalid_keys.add(text_key)
1546
revision_keys[text_key[1]].add(text_key)
1547
text_key_cache[text_key] = text_key
1548
del text_key_references
1550
text_graph = graph.Graph(graph.DictParentsProvider(text_index))
1551
NULL_REVISION = _mod_revision.NULL_REVISION
1552
# Set a cache with a size of 10 - this suffices for bzr.dev but may be
1553
# too small for large or very branchy trees. However, for 55K path
1554
# trees, it would be easy to use too much memory trivially. Ideally we
1555
# could gauge this by looking at available real memory etc, but this is
1556
# always a tricky proposition.
1557
inventory_cache = lru_cache.LRUCache(10)
1558
batch_size = 10 # should be ~150MB on a 55K path tree
1559
batch_count = len(revision_order) / batch_size + 1
1561
pb.update("Calculating text parents.", processed_texts, text_count)
1562
for offset in xrange(batch_count):
1563
to_query = revision_order[offset * batch_size:(offset + 1) *
1567
for rev_tree in self.revision_trees(to_query):
1568
revision_id = rev_tree.get_revision_id()
1569
parent_ids = ancestors[revision_id]
1570
for text_key in revision_keys[revision_id]:
1571
pb.update("Calculating text parents.", processed_texts)
1572
processed_texts += 1
1573
candidate_parents = []
1574
for parent_id in parent_ids:
1575
parent_text_key = (text_key[0], parent_id)
1577
check_parent = parent_text_key not in \
1578
revision_keys[parent_id]
1580
# the parent parent_id is a ghost:
1581
check_parent = False
1582
# truncate the derived graph against this ghost.
1583
parent_text_key = None
1585
# look at the parent commit details inventories to
1586
# determine possible candidates in the per file graph.
1589
inv = inventory_cache[parent_id]
1591
inv = self.revision_tree(parent_id).inventory
1592
inventory_cache[parent_id] = inv
1593
parent_entry = inv._byid.get(text_key[0], None)
1594
if parent_entry is not None:
1596
text_key[0], parent_entry.revision)
1598
parent_text_key = None
1599
if parent_text_key is not None:
1600
candidate_parents.append(
1601
text_key_cache[parent_text_key])
1602
parent_heads = text_graph.heads(candidate_parents)
1603
new_parents = list(parent_heads)
1604
new_parents.sort(key=lambda x:candidate_parents.index(x))
1605
if new_parents == []:
1606
new_parents = [NULL_REVISION]
1607
text_index[text_key] = new_parents
1609
for text_key in invalid_keys:
1610
text_index[text_key] = [NULL_REVISION]
1613
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
1614
"""Get an iterable listing the keys of all the data introduced by a set
1617
The keys will be ordered so that the corresponding items can be safely
1618
fetched and inserted in that order.
1620
:returns: An iterable producing tuples of (knit-kind, file-id,
1621
versions). knit-kind is one of 'file', 'inventory', 'signatures',
1622
'revisions'. file-id is None unless knit-kind is 'file'.
1624
# XXX: it's a bit weird to control the inventory weave caching in this
1625
# generator. Ideally the caching would be done in fetch.py I think. Or
1626
# maybe this generator should explicitly have the contract that it
1627
# should not be iterated until the previously yielded item has been
1629
inv_w = self.inventories
1631
# file ids that changed
1632
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
1634
num_file_ids = len(file_ids)
1635
for file_id, altered_versions in file_ids.iteritems():
1636
if _files_pb is not None:
1637
_files_pb.update("fetch texts", count, num_file_ids)
1639
yield ("file", file_id, altered_versions)
1640
# We're done with the files_pb. Note that it finished by the caller,
1641
# just as it was created by the caller.
1645
yield ("inventory", None, revision_ids)
1648
# XXX: Note ATM no callers actually pay attention to this return
1649
# instead they just use the list of revision ids and ignore
1650
# missing sigs. Consider removing this work entirely
1651
revisions_with_signatures = set(self.signatures.get_parent_map(
1652
[(r,) for r in revision_ids]))
1653
revisions_with_signatures = set(
1654
[r for (r,) in revisions_with_signatures])
1655
revisions_with_signatures.intersection_update(revision_ids)
1656
yield ("signatures", None, revisions_with_signatures)
1659
yield ("revisions", None, revision_ids)
1662
def get_inventory(self, revision_id):
1663
"""Get Inventory object by revision id."""
1664
return self.iter_inventories([revision_id]).next()
1666
def iter_inventories(self, revision_ids):
1667
"""Get many inventories by revision_ids.
1669
This will buffer some or all of the texts used in constructing the
1670
inventories in memory, but will only parse a single inventory at a
1673
:return: An iterator of inventories.
1675
if ((None in revision_ids)
1676
or (_mod_revision.NULL_REVISION in revision_ids)):
1677
raise ValueError('cannot get null revision inventory')
1678
return self._iter_inventories(revision_ids)
1680
def _iter_inventories(self, revision_ids):
1681
"""single-document based inventory iteration."""
1682
for text, revision_id in self._iter_inventory_xmls(revision_ids):
1683
yield self.deserialise_inventory(revision_id, text)
1685
def _iter_inventory_xmls(self, revision_ids):
1686
keys = [(revision_id,) for revision_id in revision_ids]
1687
stream = self.inventories.get_record_stream(keys, 'unordered', True)
1689
for record in stream:
1690
if record.storage_kind != 'absent':
1691
text_chunks[record.key] = record.get_bytes_as('chunked')
1693
raise errors.NoSuchRevision(self, record.key)
1695
chunks = text_chunks.pop(key)
1696
yield ''.join(chunks), key[-1]
1698
def deserialise_inventory(self, revision_id, xml):
1699
"""Transform the xml into an inventory object.
1701
:param revision_id: The expected revision id of the inventory.
1702
:param xml: A serialised inventory.
1704
result = self._serializer.read_inventory_from_string(xml, revision_id,
1705
entry_cache=self._inventory_entry_cache)
1706
if result.revision_id != revision_id:
1707
raise AssertionError('revision id mismatch %s != %s' % (
1708
result.revision_id, revision_id))
1711
def serialise_inventory(self, inv):
1712
return self._serializer.write_inventory_to_string(inv)
1714
def _serialise_inventory_to_lines(self, inv):
1715
return self._serializer.write_inventory_to_lines(inv)
1717
def get_serializer_format(self):
1718
return self._serializer.format_num
1721
def get_inventory_xml(self, revision_id):
1722
"""Get inventory XML as a file object."""
1723
texts = self._iter_inventory_xmls([revision_id])
1725
text, revision_id = texts.next()
1726
except StopIteration:
1727
raise errors.HistoryMissing(self, 'inventory', revision_id)
1731
def get_inventory_sha1(self, revision_id):
1732
"""Return the sha1 hash of the inventory entry
1734
return self.get_revision(revision_id).inventory_sha1
1736
def iter_reverse_revision_history(self, revision_id):
1737
"""Iterate backwards through revision ids in the lefthand history
1739
:param revision_id: The revision id to start with. All its lefthand
1740
ancestors will be traversed.
1742
graph = self.get_graph()
1743
next_id = revision_id
1745
if next_id in (None, _mod_revision.NULL_REVISION):
1748
# Note: The following line may raise KeyError in the event of
1749
# truncated history. We decided not to have a try:except:raise
1750
# RevisionNotPresent here until we see a use for it, because of the
1751
# cost in an inner loop that is by its very nature O(history).
1752
# Robert Collins 20080326
1753
parents = graph.get_parent_map([next_id])[next_id]
1754
if len(parents) == 0:
1757
next_id = parents[0]
1760
def get_revision_inventory(self, revision_id):
1761
"""Return inventory of a past revision."""
1762
# TODO: Unify this with get_inventory()
1763
# bzr 0.0.6 and later imposes the constraint that the inventory_id
1764
# must be the same as its revision, so this is trivial.
1765
if revision_id is None:
1766
# This does not make sense: if there is no revision,
1767
# then it is the current tree inventory surely ?!
1768
# and thus get_root_id() is something that looks at the last
1769
# commit on the branch, and the get_root_id is an inventory check.
1770
raise NotImplementedError
1771
# return Inventory(self.get_root_id())
1773
return self.get_inventory(revision_id)
1775
def is_shared(self):
1776
"""Return True if this repository is flagged as a shared repository."""
1777
raise NotImplementedError(self.is_shared)
1780
def reconcile(self, other=None, thorough=False):
1781
"""Reconcile this repository."""
1782
from bzrlib.reconcile import RepoReconciler
1783
reconciler = RepoReconciler(self, thorough=thorough)
1784
reconciler.reconcile()
1787
def _refresh_data(self):
1788
"""Helper called from lock_* to ensure coherency with disk.
1790
The default implementation does nothing; it is however possible
1791
for repositories to maintain loaded indices across multiple locks
1792
by checking inside their implementation of this method to see
1793
whether their indices are still valid. This depends of course on
1794
the disk format being validatable in this manner.
1798
def revision_tree(self, revision_id):
1799
"""Return Tree for a revision on this branch.
1801
`revision_id` may be NULL_REVISION for the empty tree revision.
1803
revision_id = _mod_revision.ensure_null(revision_id)
1804
# TODO: refactor this to use an existing revision object
1805
# so we don't need to read it in twice.
1806
if revision_id == _mod_revision.NULL_REVISION:
1807
return RevisionTree(self, Inventory(root_id=None),
1808
_mod_revision.NULL_REVISION)
1810
inv = self.get_revision_inventory(revision_id)
1811
return RevisionTree(self, inv, revision_id)
1813
def revision_trees(self, revision_ids):
1814
"""Return Tree for a revision on this branch.
1816
`revision_id` may not be None or 'null:'"""
1817
inventories = self.iter_inventories(revision_ids)
1818
for inv in inventories:
1819
yield RevisionTree(self, inv, inv.revision_id)
1822
def get_ancestry(self, revision_id, topo_sorted=True):
1823
"""Return a list of revision-ids integrated by a revision.
1825
The first element of the list is always None, indicating the origin
1826
revision. This might change when we have history horizons, or
1827
perhaps we should have a new API.
1829
This is topologically sorted.
1831
if _mod_revision.is_null(revision_id):
1833
if not self.has_revision(revision_id):
1834
raise errors.NoSuchRevision(self, revision_id)
1835
graph = self.get_graph()
1837
search = graph._make_breadth_first_searcher([revision_id])
1840
found, ghosts = search.next_with_ghosts()
1841
except StopIteration:
1844
if _mod_revision.NULL_REVISION in keys:
1845
keys.remove(_mod_revision.NULL_REVISION)
1847
parent_map = graph.get_parent_map(keys)
1848
keys = tsort.topo_sort(parent_map)
1849
return [None] + list(keys)
1852
"""Compress the data within the repository.
1854
This operation only makes sense for some repository types. For other
1855
types it should be a no-op that just returns.
1857
This stub method does not require a lock, but subclasses should use
1858
@needs_write_lock as this is a long running call its reasonable to
1859
implicitly lock for the user.
1863
@deprecated_method(one_six)
1864
def print_file(self, file, revision_id):
1865
"""Print `file` to stdout.
1867
FIXME RBC 20060125 as John Meinel points out this is a bad api
1868
- it writes to stdout, it assumes that that is valid etc. Fix
1869
by creating a new more flexible convenience function.
1871
tree = self.revision_tree(revision_id)
1872
# use inventory as it was in that revision
1873
file_id = tree.inventory.path2id(file)
1875
# TODO: jam 20060427 Write a test for this code path
1876
# it had a bug in it, and was raising the wrong
1878
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1879
tree.print_file(file_id)
1881
def get_transaction(self):
1882
return self.control_files.get_transaction()
1884
@deprecated_method(one_one)
1885
def get_parents(self, revision_ids):
1886
"""See StackedParentsProvider.get_parents"""
1887
parent_map = self.get_parent_map(revision_ids)
1888
return [parent_map.get(r, None) for r in revision_ids]
1890
def get_parent_map(self, revision_ids):
1891
"""See graph._StackedParentsProvider.get_parent_map"""
1892
# revisions index works in keys; this just works in revisions
1893
# therefore wrap and unwrap
1896
for revision_id in revision_ids:
1897
if revision_id == _mod_revision.NULL_REVISION:
1898
result[revision_id] = ()
1899
elif revision_id is None:
1900
raise ValueError('get_parent_map(None) is not valid')
1902
query_keys.append((revision_id ,))
1903
for ((revision_id,), parent_keys) in \
1904
self.revisions.get_parent_map(query_keys).iteritems():
1906
result[revision_id] = tuple(parent_revid
1907
for (parent_revid,) in parent_keys)
1909
result[revision_id] = (_mod_revision.NULL_REVISION,)
1912
def _make_parents_provider(self):
1915
def get_graph(self, other_repository=None):
1916
"""Return the graph walker for this repository format"""
1917
parents_provider = self._make_parents_provider()
1918
if (other_repository is not None and
1919
not self.has_same_location(other_repository)):
1920
parents_provider = graph._StackedParentsProvider(
1921
[parents_provider, other_repository._make_parents_provider()])
1922
return graph.Graph(parents_provider)
1924
def _get_versioned_file_checker(self):
1925
"""Return an object suitable for checking versioned files."""
1926
return _VersionedFileChecker(self)
1928
def revision_ids_to_search_result(self, result_set):
1929
"""Convert a set of revision ids to a graph SearchResult."""
1930
result_parents = set()
1931
for parents in self.get_graph().get_parent_map(
1932
result_set).itervalues():
1933
result_parents.update(parents)
1934
included_keys = result_set.intersection(result_parents)
1935
start_keys = result_set.difference(included_keys)
1936
exclude_keys = result_parents.difference(result_set)
1937
result = graph.SearchResult(start_keys, exclude_keys,
1938
len(result_set), result_set)
1942
def set_make_working_trees(self, new_value):
1943
"""Set the policy flag for making working trees when creating branches.
1945
This only applies to branches that use this repository.
1947
The default is 'True'.
1948
:param new_value: True to restore the default, False to disable making
1951
raise NotImplementedError(self.set_make_working_trees)
1953
def make_working_trees(self):
1954
"""Returns the policy for making working trees on new branches."""
1955
raise NotImplementedError(self.make_working_trees)
1958
def sign_revision(self, revision_id, gpg_strategy):
1959
plaintext = Testament.from_revision(self, revision_id).as_short_text()
1960
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1963
def has_signature_for_revision_id(self, revision_id):
1964
"""Query for a revision signature for revision_id in the repository."""
1965
if not self.has_revision(revision_id):
1966
raise errors.NoSuchRevision(self, revision_id)
1967
sig_present = (1 == len(
1968
self.signatures.get_parent_map([(revision_id,)])))
1972
def get_signature_text(self, revision_id):
1973
"""Return the text for a signature."""
1974
stream = self.signatures.get_record_stream([(revision_id,)],
1976
record = stream.next()
1977
if record.storage_kind == 'absent':
1978
raise errors.NoSuchRevision(self, revision_id)
1979
return record.get_bytes_as('fulltext')
1982
def check(self, revision_ids=None):
1983
"""Check consistency of all history of given revision_ids.
1985
Different repository implementations should override _check().
1987
:param revision_ids: A non-empty list of revision_ids whose ancestry
1988
will be checked. Typically the last revision_id of a branch.
1990
return self._check(revision_ids)
1992
def _check(self, revision_ids):
1993
result = check.Check(self)
1997
def _warn_if_deprecated(self):
1998
global _deprecation_warning_done
1999
if _deprecation_warning_done:
2001
_deprecation_warning_done = True
2002
warning("Format %s for %s is deprecated - please use 'bzr upgrade' to get better performance"
2003
% (self._format, self.bzrdir.transport.base))
2005
def supports_rich_root(self):
2006
return self._format.rich_root_data
2008
def _check_ascii_revisionid(self, revision_id, method):
2009
"""Private helper for ascii-only repositories."""
2010
# weave repositories refuse to store revisionids that are non-ascii.
2011
if revision_id is not None:
2012
# weaves require ascii revision ids.
2013
if isinstance(revision_id, unicode):
2015
revision_id.encode('ascii')
2016
except UnicodeEncodeError:
2017
raise errors.NonAsciiRevisionId(method, self)
2020
revision_id.decode('ascii')
2021
except UnicodeDecodeError:
2022
raise errors.NonAsciiRevisionId(method, self)
2024
def revision_graph_can_have_wrong_parents(self):
2025
"""Is it possible for this repository to have a revision graph with
2028
If True, then this repository must also implement
2029
_find_inconsistent_revision_parents so that check and reconcile can
2030
check for inconsistencies before proceeding with other checks that may
2031
depend on the revision index being consistent.
2033
raise NotImplementedError(self.revision_graph_can_have_wrong_parents)
2036
# remove these delegates a while after bzr 0.15
2037
def __make_delegated(name, from_module):
2038
def _deprecated_repository_forwarder():
2039
symbol_versioning.warn('%s moved to %s in bzr 0.15'
2040
% (name, from_module),
2043
m = __import__(from_module, globals(), locals(), [name])
2045
return getattr(m, name)
2046
except AttributeError:
2047
raise AttributeError('module %s has no name %s'
2049
globals()[name] = _deprecated_repository_forwarder
2052
'AllInOneRepository',
2053
'WeaveMetaDirRepository',
2054
'PreSplitOutRepositoryFormat',
2055
'RepositoryFormat4',
2056
'RepositoryFormat5',
2057
'RepositoryFormat6',
2058
'RepositoryFormat7',
2060
__make_delegated(_name, 'bzrlib.repofmt.weaverepo')
2064
'RepositoryFormatKnit',
2065
'RepositoryFormatKnit1',
2067
__make_delegated(_name, 'bzrlib.repofmt.knitrepo')
2070
def install_revision(repository, rev, revision_tree):
2071
"""Install all revision data into a repository."""
2072
install_revisions(repository, [(rev, revision_tree, None)])
2075
def install_revisions(repository, iterable, num_revisions=None, pb=None):
2076
"""Install all revision data into a repository.
2078
Accepts an iterable of revision, tree, signature tuples. The signature
2081
repository.start_write_group()
2083
for n, (revision, revision_tree, signature) in enumerate(iterable):
2084
_install_revision(repository, revision, revision_tree, signature)
2086
pb.update('Transferring revisions', n + 1, num_revisions)
2088
repository.abort_write_group()
2091
repository.commit_write_group()
2094
def _install_revision(repository, rev, revision_tree, signature):
2095
"""Install all revision data into a repository."""
2096
present_parents = []
2098
for p_id in rev.parent_ids:
2099
if repository.has_revision(p_id):
2100
present_parents.append(p_id)
2101
parent_trees[p_id] = repository.revision_tree(p_id)
2103
parent_trees[p_id] = repository.revision_tree(
2104
_mod_revision.NULL_REVISION)
2106
inv = revision_tree.inventory
2107
entries = inv.iter_entries()
2108
# backwards compatibility hack: skip the root id.
2109
if not repository.supports_rich_root():
2110
path, root = entries.next()
2111
if root.revision != rev.revision_id:
2112
raise errors.IncompatibleRevision(repr(repository))
2114
for path, ie in entries:
2115
text_keys[(ie.file_id, ie.revision)] = ie
2116
text_parent_map = repository.texts.get_parent_map(text_keys)
2117
missing_texts = set(text_keys) - set(text_parent_map)
2118
# Add the texts that are not already present
2119
for text_key in missing_texts:
2120
ie = text_keys[text_key]
2122
# FIXME: TODO: The following loop overlaps/duplicates that done by
2123
# commit to determine parents. There is a latent/real bug here where
2124
# the parents inserted are not those commit would do - in particular
2125
# they are not filtered by heads(). RBC, AB
2126
for revision, tree in parent_trees.iteritems():
2127
if ie.file_id not in tree:
2129
parent_id = tree.inventory[ie.file_id].revision
2130
if parent_id in text_parents:
2132
text_parents.append((ie.file_id, parent_id))
2133
lines = revision_tree.get_file(ie.file_id).readlines()
2134
repository.texts.add_lines(text_key, text_parents, lines)
2136
# install the inventory
2137
repository.add_inventory(rev.revision_id, inv, present_parents)
2138
except errors.RevisionAlreadyPresent:
2140
if signature is not None:
2141
repository.add_signature_text(rev.revision_id, signature)
2142
repository.add_revision(rev.revision_id, rev, inv)
2145
class MetaDirRepository(Repository):
2146
"""Repositories in the new meta-dir layout.
2148
:ivar _transport: Transport for access to repository control files,
2149
typically pointing to .bzr/repository.
2152
def __init__(self, _format, a_bzrdir, control_files):
2153
super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
2154
self._transport = control_files._transport
2156
def is_shared(self):
2157
"""Return True if this repository is flagged as a shared repository."""
2158
return self._transport.has('shared-storage')
2161
def set_make_working_trees(self, new_value):
2162
"""Set the policy flag for making working trees when creating branches.
2164
This only applies to branches that use this repository.
2166
The default is 'True'.
2167
:param new_value: True to restore the default, False to disable making
2172
self._transport.delete('no-working-trees')
2173
except errors.NoSuchFile:
2176
self._transport.put_bytes('no-working-trees', '',
2177
mode=self.bzrdir._get_file_mode())
2179
def make_working_trees(self):
2180
"""Returns the policy for making working trees on new branches."""
2181
return not self._transport.has('no-working-trees')
2184
class MetaDirVersionedFileRepository(MetaDirRepository):
2185
"""Repositories in a meta-dir, that work via versioned file objects."""
2187
def __init__(self, _format, a_bzrdir, control_files):
2188
super(MetaDirVersionedFileRepository, self).__init__(_format, a_bzrdir,
2192
class RepositoryFormatRegistry(registry.Registry):
2193
"""Registry of RepositoryFormats."""
2195
def get(self, format_string):
2196
r = registry.Registry.get(self, format_string)
2202
format_registry = RepositoryFormatRegistry()
2203
"""Registry of formats, indexed by their identifying format string.
2205
This can contain either format instances themselves, or classes/factories that
2206
can be called to obtain one.
2210
#####################################################################
2211
# Repository Formats
2213
class RepositoryFormat(object):
2214
"""A repository format.
2216
Formats provide three things:
2217
* An initialization routine to construct repository data on disk.
2218
* a format string which is used when the BzrDir supports versioned
2220
* an open routine which returns a Repository instance.
2222
There is one and only one Format subclass for each on-disk format. But
2223
there can be one Repository subclass that is used for several different
2224
formats. The _format attribute on a Repository instance can be used to
2225
determine the disk format.
2227
Formats are placed in an dict by their format string for reference
2228
during opening. These should be subclasses of RepositoryFormat
2231
Once a format is deprecated, just deprecate the initialize and open
2232
methods on the format class. Do not deprecate the object, as the
2233
object will be created every system load.
2235
Common instance attributes:
2236
_matchingbzrdir - the bzrdir format that the repository format was
2237
originally written to work with. This can be used if manually
2238
constructing a bzrdir and repository, or more commonly for test suite
2242
# Set to True or False in derived classes. True indicates that the format
2243
# supports ghosts gracefully.
2244
supports_ghosts = None
2245
# Can this repository be given external locations to lookup additional
2246
# data. Set to True or False in derived classes.
2247
supports_external_lookups = None
2250
return "<%s>" % self.__class__.__name__
2252
def __eq__(self, other):
2253
# format objects are generally stateless
2254
return isinstance(other, self.__class__)
2256
def __ne__(self, other):
2257
return not self == other
2260
def find_format(klass, a_bzrdir):
2261
"""Return the format for the repository object in a_bzrdir.
2263
This is used by bzr native formats that have a "format" file in
2264
the repository. Other methods may be used by different types of
2268
transport = a_bzrdir.get_repository_transport(None)
2269
format_string = transport.get("format").read()
2270
return format_registry.get(format_string)
2271
except errors.NoSuchFile:
2272
raise errors.NoRepositoryPresent(a_bzrdir)
2274
raise errors.UnknownFormatError(format=format_string,
2278
def register_format(klass, format):
2279
format_registry.register(format.get_format_string(), format)
2282
def unregister_format(klass, format):
2283
format_registry.remove(format.get_format_string())
2286
def get_default_format(klass):
2287
"""Return the current default format."""
2288
from bzrlib import bzrdir
2289
return bzrdir.format_registry.make_bzrdir('default').repository_format
2291
def get_format_string(self):
2292
"""Return the ASCII format string that identifies this format.
2294
Note that in pre format ?? repositories the format string is
2295
not permitted nor written to disk.
2297
raise NotImplementedError(self.get_format_string)
2299
def get_format_description(self):
2300
"""Return the short description for this format."""
2301
raise NotImplementedError(self.get_format_description)
2303
# TODO: this shouldn't be in the base class, it's specific to things that
2304
# use weaves or knits -- mbp 20070207
2305
def _get_versioned_file_store(self,
2310
versionedfile_class=None,
2311
versionedfile_kwargs={},
2313
if versionedfile_class is None:
2314
versionedfile_class = self._versionedfile_class
2315
weave_transport = control_files._transport.clone(name)
2316
dir_mode = control_files._dir_mode
2317
file_mode = control_files._file_mode
2318
return VersionedFileStore(weave_transport, prefixed=prefixed,
2320
file_mode=file_mode,
2321
versionedfile_class=versionedfile_class,
2322
versionedfile_kwargs=versionedfile_kwargs,
2325
def initialize(self, a_bzrdir, shared=False):
2326
"""Initialize a repository of this format in a_bzrdir.
2328
:param a_bzrdir: The bzrdir to put the new repository in it.
2329
:param shared: The repository should be initialized as a sharable one.
2330
:returns: The new repository object.
2332
This may raise UninitializableFormat if shared repository are not
2333
compatible the a_bzrdir.
2335
raise NotImplementedError(self.initialize)
2337
def is_supported(self):
2338
"""Is this format supported?
2340
Supported formats must be initializable and openable.
2341
Unsupported formats may not support initialization or committing or
2342
some other features depending on the reason for not being supported.
2346
def check_conversion_target(self, target_format):
2347
raise NotImplementedError(self.check_conversion_target)
2349
def open(self, a_bzrdir, _found=False):
2350
"""Return an instance of this format for the bzrdir a_bzrdir.
2352
_found is a private parameter, do not use it.
2354
raise NotImplementedError(self.open)
2357
class MetaDirRepositoryFormat(RepositoryFormat):
2358
"""Common base class for the new repositories using the metadir layout."""
2360
rich_root_data = False
2361
supports_tree_reference = False
2362
supports_external_lookups = False
2365
def _matchingbzrdir(self):
2366
matching = bzrdir.BzrDirMetaFormat1()
2367
matching.repository_format = self
2371
super(MetaDirRepositoryFormat, self).__init__()
2373
def _create_control_files(self, a_bzrdir):
2374
"""Create the required files and the initial control_files object."""
2375
# FIXME: RBC 20060125 don't peek under the covers
2376
# NB: no need to escape relative paths that are url safe.
2377
repository_transport = a_bzrdir.get_repository_transport(self)
2378
control_files = lockable_files.LockableFiles(repository_transport,
2379
'lock', lockdir.LockDir)
2380
control_files.create_lock()
2381
return control_files
2383
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
2384
"""Upload the initial blank content."""
2385
control_files = self._create_control_files(a_bzrdir)
2386
control_files.lock_write()
2387
transport = control_files._transport
2389
utf8_files += [('shared-storage', '')]
2391
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
2392
for (filename, content_stream) in files:
2393
transport.put_file(filename, content_stream,
2394
mode=a_bzrdir._get_file_mode())
2395
for (filename, content_bytes) in utf8_files:
2396
transport.put_bytes_non_atomic(filename, content_bytes,
2397
mode=a_bzrdir._get_file_mode())
2399
control_files.unlock()
2402
# formats which have no format string are not discoverable
2403
# and not independently creatable, so are not registered. They're
2404
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
2405
# needed, it's constructed directly by the BzrDir. Non-native formats where
2406
# the repository is not separately opened are similar.
2408
format_registry.register_lazy(
2409
'Bazaar-NG Repository format 7',
2410
'bzrlib.repofmt.weaverepo',
2414
format_registry.register_lazy(
2415
'Bazaar-NG Knit Repository Format 1',
2416
'bzrlib.repofmt.knitrepo',
2417
'RepositoryFormatKnit1',
2420
format_registry.register_lazy(
2421
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
2422
'bzrlib.repofmt.knitrepo',
2423
'RepositoryFormatKnit3',
2426
format_registry.register_lazy(
2427
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
2428
'bzrlib.repofmt.knitrepo',
2429
'RepositoryFormatKnit4',
2432
# Pack-based formats. There is one format for pre-subtrees, and one for
2433
# post-subtrees to allow ease of testing.
2434
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
2435
format_registry.register_lazy(
2436
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
2437
'bzrlib.repofmt.pack_repo',
2438
'RepositoryFormatKnitPack1',
2440
format_registry.register_lazy(
2441
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
2442
'bzrlib.repofmt.pack_repo',
2443
'RepositoryFormatKnitPack3',
2445
format_registry.register_lazy(
2446
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
2447
'bzrlib.repofmt.pack_repo',
2448
'RepositoryFormatKnitPack4',
2450
format_registry.register_lazy(
2451
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
2452
'bzrlib.repofmt.pack_repo',
2453
'RepositoryFormatKnitPack5',
2455
format_registry.register_lazy(
2456
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
2457
'bzrlib.repofmt.pack_repo',
2458
'RepositoryFormatKnitPack5RichRoot',
2460
format_registry.register_lazy(
2461
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
2462
'bzrlib.repofmt.pack_repo',
2463
'RepositoryFormatKnitPack5RichRootBroken',
2465
format_registry.register_lazy(
2466
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
2467
'bzrlib.repofmt.pack_repo',
2468
'RepositoryFormatKnitPack6',
2470
format_registry.register_lazy(
2471
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
2472
'bzrlib.repofmt.pack_repo',
2473
'RepositoryFormatKnitPack6RichRoot',
2476
# Development formats.
2477
# 1.7->1.8 go below here
2478
format_registry.register_lazy(
2479
"Bazaar development format 2 (needs bzr.dev from before 1.8)\n",
2480
'bzrlib.repofmt.pack_repo',
2481
'RepositoryFormatPackDevelopment2',
2483
format_registry.register_lazy(
2484
("Bazaar development format 2 with subtree support "
2485
"(needs bzr.dev from before 1.8)\n"),
2486
'bzrlib.repofmt.pack_repo',
2487
'RepositoryFormatPackDevelopment2Subtree',
2491
class InterRepository(InterObject):
2492
"""This class represents operations taking place between two repositories.
2494
Its instances have methods like copy_content and fetch, and contain
2495
references to the source and target repositories these operations can be
2498
Often we will provide convenience methods on 'repository' which carry out
2499
operations with another repository - they will always forward to
2500
InterRepository.get(other).method_name(parameters).
2503
_walk_to_common_revisions_batch_size = 1
2505
"""The available optimised InterRepository types."""
2507
def __init__(self, source, target):
2508
InterObject.__init__(self, source, target)
2509
# These two attributes may be overridden by e.g. InterOtherToRemote to
2510
# provide a faster implementation.
2511
self.target_get_graph = self.target.get_graph
2512
self.target_get_parent_map = self.target.get_parent_map
2514
def copy_content(self, revision_id=None):
2515
raise NotImplementedError(self.copy_content)
2517
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2518
"""Fetch the content required to construct revision_id.
2520
The content is copied from self.source to self.target.
2522
:param revision_id: if None all content is copied, if NULL_REVISION no
2524
:param pb: optional progress bar to use for progress reports. If not
2525
provided a default one will be created.
2527
:returns: (copied_revision_count, failures).
2529
# Normally we should find a specific InterRepository subclass to do
2530
# the fetch; if nothing else then at least InterSameDataRepository.
2531
# If none of them is suitable it looks like fetching is not possible;
2532
# we try to give a good message why. _assert_same_model will probably
2533
# give a helpful message; otherwise a generic one.
2534
self._assert_same_model(self.source, self.target)
2535
raise errors.IncompatibleRepositories(self.source, self.target,
2536
"no suitableInterRepository found")
2538
def _walk_to_common_revisions(self, revision_ids):
2539
"""Walk out from revision_ids in source to revisions target has.
2541
:param revision_ids: The start point for the search.
2542
:return: A set of revision ids.
2544
target_graph = self.target_get_graph()
2545
revision_ids = frozenset(revision_ids)
2546
# Fast path for the case where all the revisions are already in the
2548
# (Although this does incur an extra round trip for the
2549
# fairly common case where the target doesn't already have the revision
2551
if set(target_graph.get_parent_map(revision_ids)) == revision_ids:
2552
return graph.SearchResult(revision_ids, set(), 0, set())
2553
missing_revs = set()
2554
source_graph = self.source.get_graph()
2555
# ensure we don't pay silly lookup costs.
2556
searcher = source_graph._make_breadth_first_searcher(revision_ids)
2557
null_set = frozenset([_mod_revision.NULL_REVISION])
2558
searcher_exhausted = False
2562
# Iterate the searcher until we have enough next_revs
2563
while len(next_revs) < self._walk_to_common_revisions_batch_size:
2565
next_revs_part, ghosts_part = searcher.next_with_ghosts()
2566
next_revs.update(next_revs_part)
2567
ghosts.update(ghosts_part)
2568
except StopIteration:
2569
searcher_exhausted = True
2571
# If there are ghosts in the source graph, and the caller asked for
2572
# them, make sure that they are present in the target.
2573
# We don't care about other ghosts as we can't fetch them and
2574
# haven't been asked to.
2575
ghosts_to_check = set(revision_ids.intersection(ghosts))
2576
revs_to_get = set(next_revs).union(ghosts_to_check)
2578
have_revs = set(target_graph.get_parent_map(revs_to_get))
2579
# we always have NULL_REVISION present.
2580
have_revs = have_revs.union(null_set)
2581
# Check if the target is missing any ghosts we need.
2582
ghosts_to_check.difference_update(have_revs)
2584
# One of the caller's revision_ids is a ghost in both the
2585
# source and the target.
2586
raise errors.NoSuchRevision(
2587
self.source, ghosts_to_check.pop())
2588
missing_revs.update(next_revs - have_revs)
2589
# Because we may have walked past the original stop point, make
2590
# sure everything is stopped
2591
stop_revs = searcher.find_seen_ancestors(have_revs)
2592
searcher.stop_searching_any(stop_revs)
2593
if searcher_exhausted:
2595
return searcher.get_result()
2597
@deprecated_method(one_two)
2599
def missing_revision_ids(self, revision_id=None, find_ghosts=True):
2600
"""Return the revision ids that source has that target does not.
2602
These are returned in topological order.
2604
:param revision_id: only return revision ids included by this
2606
:param find_ghosts: If True find missing revisions in deep history
2607
rather than just finding the surface difference.
2609
return list(self.search_missing_revision_ids(
2610
revision_id, find_ghosts).get_keys())
2613
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2614
"""Return the revision ids that source has that target does not.
2616
:param revision_id: only return revision ids included by this
2618
:param find_ghosts: If True find missing revisions in deep history
2619
rather than just finding the surface difference.
2620
:return: A bzrlib.graph.SearchResult.
2622
# stop searching at found target revisions.
2623
if not find_ghosts and revision_id is not None:
2624
return self._walk_to_common_revisions([revision_id])
2625
# generic, possibly worst case, slow code path.
2626
target_ids = set(self.target.all_revision_ids())
2627
if revision_id is not None:
2628
source_ids = self.source.get_ancestry(revision_id)
2629
if source_ids[0] is not None:
2630
raise AssertionError()
2633
source_ids = self.source.all_revision_ids()
2634
result_set = set(source_ids).difference(target_ids)
2635
return self.source.revision_ids_to_search_result(result_set)
2638
def _same_model(source, target):
2639
"""True if source and target have the same data representation.
2641
Note: this is always called on the base class; overriding it in a
2642
subclass will have no effect.
2645
InterRepository._assert_same_model(source, target)
2647
except errors.IncompatibleRepositories, e:
2651
def _assert_same_model(source, target):
2652
"""Raise an exception if two repositories do not use the same model.
2654
if source.supports_rich_root() != target.supports_rich_root():
2655
raise errors.IncompatibleRepositories(source, target,
2656
"different rich-root support")
2657
if source._serializer != target._serializer:
2658
raise errors.IncompatibleRepositories(source, target,
2659
"different serializers")
2662
class InterSameDataRepository(InterRepository):
2663
"""Code for converting between repositories that represent the same data.
2665
Data format and model must match for this to work.
2669
def _get_repo_format_to_test(self):
2670
"""Repository format for testing with.
2672
InterSameData can pull from subtree to subtree and from non-subtree to
2673
non-subtree, so we test this with the richest repository format.
2675
from bzrlib.repofmt import knitrepo
2676
return knitrepo.RepositoryFormatKnit3()
2679
def is_compatible(source, target):
2680
return InterRepository._same_model(source, target)
2683
def copy_content(self, revision_id=None):
2684
"""Make a complete copy of the content in self into destination.
2686
This copies both the repository's revision data, and configuration information
2687
such as the make_working_trees setting.
2689
This is a destructive operation! Do not use it on existing
2692
:param revision_id: Only copy the content needed to construct
2693
revision_id and its parents.
2696
self.target.set_make_working_trees(self.source.make_working_trees())
2697
except NotImplementedError:
2699
# but don't bother fetching if we have the needed data now.
2700
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2701
self.target.has_revision(revision_id)):
2703
self.target.fetch(self.source, revision_id=revision_id)
2706
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2707
"""See InterRepository.fetch()."""
2708
from bzrlib.fetch import RepoFetcher
2709
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2710
self.source, self.source._format, self.target,
2711
self.target._format)
2712
f = RepoFetcher(to_repository=self.target,
2713
from_repository=self.source,
2714
last_revision=revision_id,
2715
pb=pb, find_ghosts=find_ghosts)
2716
return f.count_copied, f.failed_revisions
2719
class InterWeaveRepo(InterSameDataRepository):
2720
"""Optimised code paths between Weave based repositories.
2722
This should be in bzrlib/repofmt/weaverepo.py but we have not yet
2723
implemented lazy inter-object optimisation.
2727
def _get_repo_format_to_test(self):
2728
from bzrlib.repofmt import weaverepo
2729
return weaverepo.RepositoryFormat7()
2732
def is_compatible(source, target):
2733
"""Be compatible with known Weave formats.
2735
We don't test for the stores being of specific types because that
2736
could lead to confusing results, and there is no need to be
2739
from bzrlib.repofmt.weaverepo import (
2745
return (isinstance(source._format, (RepositoryFormat5,
2747
RepositoryFormat7)) and
2748
isinstance(target._format, (RepositoryFormat5,
2750
RepositoryFormat7)))
2751
except AttributeError:
2755
def copy_content(self, revision_id=None):
2756
"""See InterRepository.copy_content()."""
2757
# weave specific optimised path:
2759
self.target.set_make_working_trees(self.source.make_working_trees())
2760
except (errors.RepositoryUpgradeRequired, NotImplemented):
2762
# FIXME do not peek!
2763
if self.source._transport.listable():
2764
pb = ui.ui_factory.nested_progress_bar()
2766
self.target.texts.insert_record_stream(
2767
self.source.texts.get_record_stream(
2768
self.source.texts.keys(), 'topological', False))
2769
pb.update('copying inventory', 0, 1)
2770
self.target.inventories.insert_record_stream(
2771
self.source.inventories.get_record_stream(
2772
self.source.inventories.keys(), 'topological', False))
2773
self.target.signatures.insert_record_stream(
2774
self.source.signatures.get_record_stream(
2775
self.source.signatures.keys(),
2777
self.target.revisions.insert_record_stream(
2778
self.source.revisions.get_record_stream(
2779
self.source.revisions.keys(),
2780
'topological', True))
2784
self.target.fetch(self.source, revision_id=revision_id)
2787
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2788
"""See InterRepository.fetch()."""
2789
from bzrlib.fetch import RepoFetcher
2790
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2791
self.source, self.source._format, self.target, self.target._format)
2792
f = RepoFetcher(to_repository=self.target,
2793
from_repository=self.source,
2794
last_revision=revision_id,
2795
pb=pb, find_ghosts=find_ghosts)
2796
return f.count_copied, f.failed_revisions
2799
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2800
"""See InterRepository.missing_revision_ids()."""
2801
# we want all revisions to satisfy revision_id in source.
2802
# but we don't want to stat every file here and there.
2803
# we want then, all revisions other needs to satisfy revision_id
2804
# checked, but not those that we have locally.
2805
# so the first thing is to get a subset of the revisions to
2806
# satisfy revision_id in source, and then eliminate those that
2807
# we do already have.
2808
# this is slow on high latency connection to self, but as as this
2809
# disk format scales terribly for push anyway due to rewriting
2810
# inventory.weave, this is considered acceptable.
2812
if revision_id is not None:
2813
source_ids = self.source.get_ancestry(revision_id)
2814
if source_ids[0] is not None:
2815
raise AssertionError()
2818
source_ids = self.source._all_possible_ids()
2819
source_ids_set = set(source_ids)
2820
# source_ids is the worst possible case we may need to pull.
2821
# now we want to filter source_ids against what we actually
2822
# have in target, but don't try to check for existence where we know
2823
# we do not have a revision as that would be pointless.
2824
target_ids = set(self.target._all_possible_ids())
2825
possibly_present_revisions = target_ids.intersection(source_ids_set)
2826
actually_present_revisions = set(
2827
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2828
required_revisions = source_ids_set.difference(actually_present_revisions)
2829
if revision_id is not None:
2830
# we used get_ancestry to determine source_ids then we are assured all
2831
# revisions referenced are present as they are installed in topological order.
2832
# and the tip revision was validated by get_ancestry.
2833
result_set = required_revisions
2835
# if we just grabbed the possibly available ids, then
2836
# we only have an estimate of whats available and need to validate
2837
# that against the revision records.
2839
self.source._eliminate_revisions_not_present(required_revisions))
2840
return self.source.revision_ids_to_search_result(result_set)
2843
class InterKnitRepo(InterSameDataRepository):
2844
"""Optimised code paths between Knit based repositories."""
2847
def _get_repo_format_to_test(self):
2848
from bzrlib.repofmt import knitrepo
2849
return knitrepo.RepositoryFormatKnit1()
2852
def is_compatible(source, target):
2853
"""Be compatible with known Knit formats.
2855
We don't test for the stores being of specific types because that
2856
could lead to confusing results, and there is no need to be
2859
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
2861
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
2862
isinstance(target._format, RepositoryFormatKnit))
2863
except AttributeError:
2865
return are_knits and InterRepository._same_model(source, target)
2868
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2869
"""See InterRepository.fetch()."""
2870
from bzrlib.fetch import RepoFetcher
2871
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2872
self.source, self.source._format, self.target, self.target._format)
2873
f = RepoFetcher(to_repository=self.target,
2874
from_repository=self.source,
2875
last_revision=revision_id,
2876
pb=pb, find_ghosts=find_ghosts)
2877
return f.count_copied, f.failed_revisions
2880
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2881
"""See InterRepository.missing_revision_ids()."""
2882
if revision_id is not None:
2883
source_ids = self.source.get_ancestry(revision_id)
2884
if source_ids[0] is not None:
2885
raise AssertionError()
2888
source_ids = self.source.all_revision_ids()
2889
source_ids_set = set(source_ids)
2890
# source_ids is the worst possible case we may need to pull.
2891
# now we want to filter source_ids against what we actually
2892
# have in target, but don't try to check for existence where we know
2893
# we do not have a revision as that would be pointless.
2894
target_ids = set(self.target.all_revision_ids())
2895
possibly_present_revisions = target_ids.intersection(source_ids_set)
2896
actually_present_revisions = set(
2897
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2898
required_revisions = source_ids_set.difference(actually_present_revisions)
2899
if revision_id is not None:
2900
# we used get_ancestry to determine source_ids then we are assured all
2901
# revisions referenced are present as they are installed in topological order.
2902
# and the tip revision was validated by get_ancestry.
2903
result_set = required_revisions
2905
# if we just grabbed the possibly available ids, then
2906
# we only have an estimate of whats available and need to validate
2907
# that against the revision records.
2909
self.source._eliminate_revisions_not_present(required_revisions))
2910
return self.source.revision_ids_to_search_result(result_set)
2913
class InterPackRepo(InterSameDataRepository):
2914
"""Optimised code paths between Pack based repositories."""
2917
def _get_repo_format_to_test(self):
2918
from bzrlib.repofmt import pack_repo
2919
return pack_repo.RepositoryFormatKnitPack1()
2922
def is_compatible(source, target):
2923
"""Be compatible with known Pack formats.
2925
We don't test for the stores being of specific types because that
2926
could lead to confusing results, and there is no need to be
2929
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2931
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2932
isinstance(target._format, RepositoryFormatPack))
2933
except AttributeError:
2935
return are_packs and InterRepository._same_model(source, target)
2938
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2939
"""See InterRepository.fetch()."""
2940
if (len(self.source._fallback_repositories) > 0 or
2941
len(self.target._fallback_repositories) > 0):
2942
# The pack layer is not aware of fallback repositories, so when
2943
# fetching from a stacked repository or into a stacked repository
2944
# we use the generic fetch logic which uses the VersionedFiles
2945
# attributes on repository.
2946
from bzrlib.fetch import RepoFetcher
2947
fetcher = RepoFetcher(self.target, self.source, revision_id,
2949
return fetcher.count_copied, fetcher.failed_revisions
2950
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2951
self.source, self.source._format, self.target, self.target._format)
2952
self.count_copied = 0
2953
if revision_id is None:
2955
# everything to do - use pack logic
2956
# to fetch from all packs to one without
2957
# inventory parsing etc, IFF nothing to be copied is in the target.
2959
source_revision_ids = frozenset(self.source.all_revision_ids())
2960
revision_ids = source_revision_ids - \
2961
frozenset(self.target_get_parent_map(source_revision_ids))
2962
revision_keys = [(revid,) for revid in revision_ids]
2963
target_pack_collection = self._get_target_pack_collection()
2964
index = target_pack_collection.revision_index.combined_index
2965
present_revision_ids = set(item[1][0] for item in
2966
index.iter_entries(revision_keys))
2967
revision_ids = set(revision_ids) - present_revision_ids
2968
# implementing the TODO will involve:
2969
# - detecting when all of a pack is selected
2970
# - avoiding as much as possible pre-selection, so the
2971
# more-core routines such as create_pack_from_packs can filter in
2972
# a just-in-time fashion. (though having a HEADS list on a
2973
# repository might make this a lot easier, because we could
2974
# sensibly detect 'new revisions' without doing a full index scan.
2975
elif _mod_revision.is_null(revision_id):
2980
revision_ids = self.search_missing_revision_ids(revision_id,
2981
find_ghosts=find_ghosts).get_keys()
2982
except errors.NoSuchRevision:
2983
raise errors.InstallFailed([revision_id])
2984
if len(revision_ids) == 0:
2986
return self._pack(self.source, self.target, revision_ids)
2988
def _pack(self, source, target, revision_ids):
2989
from bzrlib.repofmt.pack_repo import Packer
2990
target_pack_collection = self._get_target_pack_collection()
2991
packs = source._pack_collection.all_packs()
2992
pack = Packer(target_pack_collection, packs, '.fetch',
2993
revision_ids).pack()
2994
if pack is not None:
2995
target_pack_collection._save_pack_names()
2996
copied_revs = pack.get_revision_count()
2997
# Trigger an autopack. This may duplicate effort as we've just done
2998
# a pack creation, but for now it is simpler to think about as
2999
# 'upload data, then repack if needed'.
3001
return (copied_revs, [])
3005
def _autopack(self):
3006
self.target._pack_collection.autopack()
3008
def _get_target_pack_collection(self):
3009
return self.target._pack_collection
3012
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
3013
"""See InterRepository.missing_revision_ids().
3015
:param find_ghosts: Find ghosts throughout the ancestry of
3018
if not find_ghosts and revision_id is not None:
3019
return self._walk_to_common_revisions([revision_id])
3020
elif revision_id is not None:
3021
# Find ghosts: search for revisions pointing from one repository to
3022
# the other, and vice versa, anywhere in the history of revision_id.
3023
graph = self.target_get_graph(other_repository=self.source)
3024
searcher = graph._make_breadth_first_searcher([revision_id])
3028
next_revs, ghosts = searcher.next_with_ghosts()
3029
except StopIteration:
3031
if revision_id in ghosts:
3032
raise errors.NoSuchRevision(self.source, revision_id)
3033
found_ids.update(next_revs)
3034
found_ids.update(ghosts)
3035
found_ids = frozenset(found_ids)
3036
# Double query here: should be able to avoid this by changing the
3037
# graph api further.
3038
result_set = found_ids - frozenset(
3039
self.target_get_parent_map(found_ids))
3041
source_ids = self.source.all_revision_ids()
3042
# source_ids is the worst possible case we may need to pull.
3043
# now we want to filter source_ids against what we actually
3044
# have in target, but don't try to check for existence where we know
3045
# we do not have a revision as that would be pointless.
3046
target_ids = set(self.target.all_revision_ids())
3047
result_set = set(source_ids).difference(target_ids)
3048
return self.source.revision_ids_to_search_result(result_set)
3051
class InterModel1and2(InterRepository):
3054
def _get_repo_format_to_test(self):
3058
def is_compatible(source, target):
3059
if not source.supports_rich_root() and target.supports_rich_root():
3065
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3066
"""See InterRepository.fetch()."""
3067
from bzrlib.fetch import Model1toKnit2Fetcher
3068
f = Model1toKnit2Fetcher(to_repository=self.target,
3069
from_repository=self.source,
3070
last_revision=revision_id,
3071
pb=pb, find_ghosts=find_ghosts)
3072
return f.count_copied, f.failed_revisions
3075
def copy_content(self, revision_id=None):
3076
"""Make a complete copy of the content in self into destination.
3078
This is a destructive operation! Do not use it on existing
3081
:param revision_id: Only copy the content needed to construct
3082
revision_id and its parents.
3085
self.target.set_make_working_trees(self.source.make_working_trees())
3086
except NotImplementedError:
3088
# but don't bother fetching if we have the needed data now.
3089
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
3090
self.target.has_revision(revision_id)):
3092
self.target.fetch(self.source, revision_id=revision_id)
3095
class InterKnit1and2(InterKnitRepo):
3098
def _get_repo_format_to_test(self):
3102
def is_compatible(source, target):
3103
"""Be compatible with Knit1 source and Knit3 target"""
3105
from bzrlib.repofmt.knitrepo import (
3106
RepositoryFormatKnit1,
3107
RepositoryFormatKnit3,
3109
from bzrlib.repofmt.pack_repo import (
3110
RepositoryFormatKnitPack1,
3111
RepositoryFormatKnitPack3,
3112
RepositoryFormatKnitPack4,
3113
RepositoryFormatKnitPack5,
3114
RepositoryFormatKnitPack5RichRoot,
3115
RepositoryFormatKnitPack6,
3116
RepositoryFormatKnitPack6RichRoot,
3117
RepositoryFormatPackDevelopment2,
3118
RepositoryFormatPackDevelopment2Subtree,
3121
RepositoryFormatKnit1, # no rr, no subtree
3122
RepositoryFormatKnitPack1, # no rr, no subtree
3123
RepositoryFormatPackDevelopment2, # no rr, no subtree
3124
RepositoryFormatKnitPack5, # no rr, no subtree
3125
RepositoryFormatKnitPack6, # no rr, no subtree
3128
RepositoryFormatKnit3, # rr, subtree
3129
RepositoryFormatKnitPack3, # rr, subtree
3130
RepositoryFormatKnitPack4, # rr, no subtree
3131
RepositoryFormatKnitPack5RichRoot,# rr, no subtree
3132
RepositoryFormatKnitPack6RichRoot,# rr, no subtree
3133
RepositoryFormatPackDevelopment2Subtree, # rr, subtree
3135
for format in norichroot:
3136
if format.rich_root_data:
3137
raise AssertionError('Format %s is a rich-root format'
3138
' but is included in the non-rich-root list'
3140
for format in richroot:
3141
if not format.rich_root_data:
3142
raise AssertionError('Format %s is not a rich-root format'
3143
' but is included in the rich-root list'
3145
# TODO: One alternative is to just check format.rich_root_data,
3146
# instead of keeping membership lists. However, the formats
3147
# *also* have to use the same 'Knit' style of storage
3148
# (line-deltas, fulltexts, etc.)
3149
return (isinstance(source._format, norichroot) and
3150
isinstance(target._format, richroot))
3151
except AttributeError:
3155
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3156
"""See InterRepository.fetch()."""
3157
from bzrlib.fetch import Knit1to2Fetcher
3158
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
3159
self.source, self.source._format, self.target,
3160
self.target._format)
3161
f = Knit1to2Fetcher(to_repository=self.target,
3162
from_repository=self.source,
3163
last_revision=revision_id,
3164
pb=pb, find_ghosts=find_ghosts)
3165
return f.count_copied, f.failed_revisions
3168
class InterDifferingSerializer(InterKnitRepo):
3171
def _get_repo_format_to_test(self):
3175
def is_compatible(source, target):
3176
"""Be compatible with Knit2 source and Knit3 target"""
3177
if source.supports_rich_root() != target.supports_rich_root():
3179
# Ideally, we'd support fetching if the source had no tree references
3180
# even if it supported them...
3181
if (getattr(source, '_format.supports_tree_reference', False) and
3182
not getattr(target, '_format.supports_tree_reference', False)):
3186
def _fetch_batch(self, revision_ids, basis_id, basis_tree):
3187
"""Fetch across a few revisions.
3189
:param revision_ids: The revisions to copy
3190
:param basis_id: The revision_id of basis_tree
3191
:param basis_tree: A tree that is not in revision_ids which should
3192
already exist in the target.
3193
:return: (basis_id, basis_tree) A new basis to use now that these trees
3196
# Walk though all revisions; get inventory deltas, copy referenced
3197
# texts that delta references, insert the delta, revision and
3201
pending_revisions = []
3202
for tree in self.source.revision_trees(revision_ids):
3203
current_revision_id = tree.get_revision_id()
3204
delta = tree.inventory._make_delta(basis_tree.inventory)
3205
for old_path, new_path, file_id, entry in delta:
3206
if new_path is not None:
3207
if not (new_path or self.target.supports_rich_root()):
3208
# We leave the inventory delta in, because that
3209
# will have the deserialised inventory root
3213
# "if entry.revision == current_revision_id" ?
3214
if entry.revision == current_revision_id:
3215
text_keys.add((file_id, entry.revision))
3216
revision = self.source.get_revision(current_revision_id)
3217
pending_deltas.append((basis_id, delta,
3218
current_revision_id, revision.parent_ids))
3219
pending_revisions.append(revision)
3220
basis_id = current_revision_id
3223
from_texts = self.source.texts
3224
to_texts = self.target.texts
3225
to_texts.insert_record_stream(from_texts.get_record_stream(
3226
text_keys, self.target._fetch_order,
3227
not self.target._fetch_uses_deltas))
3229
for delta in pending_deltas:
3230
self.target.add_inventory_by_delta(*delta)
3231
# insert signatures and revisions
3232
for revision in pending_revisions:
3234
signature = self.source.get_signature_text(
3235
revision.revision_id)
3236
self.target.add_signature_text(revision.revision_id,
3238
except errors.NoSuchRevision:
3240
self.target.add_revision(revision.revision_id, revision)
3241
return basis_id, basis_tree
3243
def _fetch_all_revisions(self, revision_ids, pb):
3244
"""Fetch everything for the list of revisions.
3246
:param revision_ids: The list of revisions to fetch. Must be in
3248
:param pb: A ProgressBar
3251
basis_id, basis_tree = self._get_basis(revision_ids[0])
3253
for offset in range(0, len(revision_ids), batch_size):
3254
self.target.start_write_group()
3256
pb.update('Transferring revisions', offset,
3258
batch = revision_ids[offset:offset+batch_size]
3259
basis_id, basis_tree = self._fetch_batch(batch,
3260
basis_id, basis_tree)
3262
self.target.abort_write_group()
3265
self.target.commit_write_group()
3266
pb.update('Transferring revisions', len(revision_ids),
3270
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3271
"""See InterRepository.fetch()."""
3272
revision_ids = self.target.search_missing_revision_ids(self.source,
3273
revision_id, find_ghosts=find_ghosts).get_keys()
3274
if not revision_ids:
3276
revision_ids = tsort.topo_sort(
3277
self.source.get_graph().get_parent_map(revision_ids))
3279
my_pb = ui.ui_factory.nested_progress_bar()
3284
self._fetch_all_revisions(revision_ids, pb)
3286
if my_pb is not None:
3288
return len(revision_ids), 0
3290
def _get_basis(self, first_revision_id):
3291
"""Get a revision and tree which exists in the target.
3293
This assumes that first_revision_id is selected for transmission
3294
because all other ancestors are already present. If we can't find an
3295
ancestor we fall back to NULL_REVISION since we know that is safe.
3297
:return: (basis_id, basis_tree)
3299
first_rev = self.source.get_revision(first_revision_id)
3301
basis_id = first_rev.parent_ids[0]
3302
# only valid as a basis if the target has it
3303
self.target.get_revision(basis_id)
3304
# Try to get a basis tree - if its a ghost it will hit the
3305
# NoSuchRevision case.
3306
basis_tree = self.source.revision_tree(basis_id)
3307
except (IndexError, errors.NoSuchRevision):
3308
basis_id = _mod_revision.NULL_REVISION
3309
basis_tree = self.source.revision_tree(basis_id)
3310
return basis_id, basis_tree
3313
class InterOtherToRemote(InterRepository):
3314
"""An InterRepository that simply delegates to the 'real' InterRepository
3315
calculated for (source, target._real_repository).
3318
_walk_to_common_revisions_batch_size = 50
3320
def __init__(self, source, target):
3321
InterRepository.__init__(self, source, target)
3322
self._real_inter = None
3325
def is_compatible(source, target):
3326
if isinstance(target, remote.RemoteRepository):
3330
def _ensure_real_inter(self):
3331
if self._real_inter is None:
3332
self.target._ensure_real()
3333
real_target = self.target._real_repository
3334
self._real_inter = InterRepository.get(self.source, real_target)
3335
# Make _real_inter use the RemoteRepository for get_parent_map
3336
self._real_inter.target_get_graph = self.target.get_graph
3337
self._real_inter.target_get_parent_map = self.target.get_parent_map
3339
def copy_content(self, revision_id=None):
3340
self._ensure_real_inter()
3341
self._real_inter.copy_content(revision_id=revision_id)
3343
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3344
self._ensure_real_inter()
3345
return self._real_inter.fetch(revision_id=revision_id, pb=pb,
3346
find_ghosts=find_ghosts)
3349
def _get_repo_format_to_test(self):
3353
class InterRemoteToOther(InterRepository):
3355
def __init__(self, source, target):
3356
InterRepository.__init__(self, source, target)
3357
self._real_inter = None
3360
def is_compatible(source, target):
3361
if not isinstance(source, remote.RemoteRepository):
3363
# Is source's model compatible with target's model?
3364
source._ensure_real()
3365
real_source = source._real_repository
3366
if isinstance(real_source, remote.RemoteRepository):
3367
raise NotImplementedError(
3368
"We don't support remote repos backed by remote repos yet.")
3369
return InterRepository._same_model(real_source, target)
3371
def _ensure_real_inter(self):
3372
if self._real_inter is None:
3373
self.source._ensure_real()
3374
real_source = self.source._real_repository
3375
self._real_inter = InterRepository.get(real_source, self.target)
3377
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3378
self._ensure_real_inter()
3379
return self._real_inter.fetch(revision_id=revision_id, pb=pb,
3380
find_ghosts=find_ghosts)
3382
def copy_content(self, revision_id=None):
3383
self._ensure_real_inter()
3384
self._real_inter.copy_content(revision_id=revision_id)
3387
def _get_repo_format_to_test(self):
3392
class InterPackToRemotePack(InterPackRepo):
3393
"""A specialisation of InterPackRepo for a target that is a
3396
This will use the get_parent_map RPC rather than plain readvs, and also
3397
uses an RPC for autopacking.
3400
_walk_to_common_revisions_batch_size = 50
3403
def is_compatible(source, target):
3404
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
3405
if isinstance(source._format, RepositoryFormatPack):
3406
if isinstance(target, remote.RemoteRepository):
3407
target._ensure_real()
3408
if isinstance(target._real_repository._format,
3409
RepositoryFormatPack):
3410
if InterRepository._same_model(source, target):
3414
def _autopack(self):
3415
self.target.autopack()
3417
def _get_target_pack_collection(self):
3418
return self.target._real_repository._pack_collection
3421
def _get_repo_format_to_test(self):
3425
InterRepository.register_optimiser(InterDifferingSerializer)
3426
InterRepository.register_optimiser(InterSameDataRepository)
3427
InterRepository.register_optimiser(InterWeaveRepo)
3428
InterRepository.register_optimiser(InterKnitRepo)
3429
InterRepository.register_optimiser(InterModel1and2)
3430
InterRepository.register_optimiser(InterKnit1and2)
3431
InterRepository.register_optimiser(InterPackRepo)
3432
InterRepository.register_optimiser(InterOtherToRemote)
3433
InterRepository.register_optimiser(InterRemoteToOther)
3434
InterRepository.register_optimiser(InterPackToRemotePack)
3437
class CopyConverter(object):
3438
"""A repository conversion tool which just performs a copy of the content.
3440
This is slow but quite reliable.
3443
def __init__(self, target_format):
3444
"""Create a CopyConverter.
3446
:param target_format: The format the resulting repository should be.
3448
self.target_format = target_format
3450
def convert(self, repo, pb):
3451
"""Perform the conversion of to_convert, giving feedback via pb.
3453
:param to_convert: The disk object to convert.
3454
:param pb: a progress bar to use for progress information.
3459
# this is only useful with metadir layouts - separated repo content.
3460
# trigger an assertion if not such
3461
repo._format.get_format_string()
3462
self.repo_dir = repo.bzrdir
3463
self.step('Moving repository to repository.backup')
3464
self.repo_dir.transport.move('repository', 'repository.backup')
3465
backup_transport = self.repo_dir.transport.clone('repository.backup')
3466
repo._format.check_conversion_target(self.target_format)
3467
self.source_repo = repo._format.open(self.repo_dir,
3469
_override_transport=backup_transport)
3470
self.step('Creating new repository')
3471
converted = self.target_format.initialize(self.repo_dir,
3472
self.source_repo.is_shared())
3473
converted.lock_write()
3475
self.step('Copying content into repository.')
3476
self.source_repo.copy_content_into(converted)
3479
self.step('Deleting old repository content.')
3480
self.repo_dir.transport.delete_tree('repository.backup')
3481
self.pb.note('repository converted')
3483
def step(self, message):
3484
"""Update the pb by a step."""
3486
self.pb.update(message, self.count, self.total)
3498
def _unescaper(match, _map=_unescape_map):
3499
code = match.group(1)
3503
if not code.startswith('#'):
3505
return unichr(int(code[1:])).encode('utf8')
3511
def _unescape_xml(data):
3512
"""Unescape predefined XML entities in a string of data."""
3514
if _unescape_re is None:
3515
_unescape_re = re.compile('\&([^;]*);')
3516
return _unescape_re.sub(_unescaper, data)
3519
class _VersionedFileChecker(object):
3521
def __init__(self, repository):
3522
self.repository = repository
3523
self.text_index = self.repository._generate_text_key_index()
3525
def calculate_file_version_parents(self, text_key):
3526
"""Calculate the correct parents for a file version according to
3529
parent_keys = self.text_index[text_key]
3530
if parent_keys == [_mod_revision.NULL_REVISION]:
3532
return tuple(parent_keys)
3534
def check_file_version_parents(self, texts, progress_bar=None):
3535
"""Check the parents stored in a versioned file are correct.
3537
It also detects file versions that are not referenced by their
3538
corresponding revision's inventory.
3540
:returns: A tuple of (wrong_parents, dangling_file_versions).
3541
wrong_parents is a dict mapping {revision_id: (stored_parents,
3542
correct_parents)} for each revision_id where the stored parents
3543
are not correct. dangling_file_versions is a set of (file_id,
3544
revision_id) tuples for versions that are present in this versioned
3545
file, but not used by the corresponding inventory.
3548
self.file_ids = set([file_id for file_id, _ in
3549
self.text_index.iterkeys()])
3550
# text keys is now grouped by file_id
3551
n_weaves = len(self.file_ids)
3552
files_in_revisions = {}
3553
revisions_of_files = {}
3554
n_versions = len(self.text_index)
3555
progress_bar.update('loading text store', 0, n_versions)
3556
parent_map = self.repository.texts.get_parent_map(self.text_index)
3557
# On unlistable transports this could well be empty/error...
3558
text_keys = self.repository.texts.keys()
3559
unused_keys = frozenset(text_keys) - set(self.text_index)
3560
for num, key in enumerate(self.text_index.iterkeys()):
3561
if progress_bar is not None:
3562
progress_bar.update('checking text graph', num, n_versions)
3563
correct_parents = self.calculate_file_version_parents(key)
3565
knit_parents = parent_map[key]
3566
except errors.RevisionNotPresent:
3569
if correct_parents != knit_parents:
3570
wrong_parents[key] = (knit_parents, correct_parents)
3571
return wrong_parents, unused_keys
3574
def _old_get_graph(repository, revision_id):
3575
"""DO NOT USE. That is all. I'm serious."""
3576
graph = repository.get_graph()
3577
revision_graph = dict(((key, value) for key, value in
3578
graph.iter_ancestry([revision_id]) if value is not None))
3579
return _strip_NULL_ghosts(revision_graph)
3582
def _strip_NULL_ghosts(revision_graph):
3583
"""Also don't use this. more compatibility code for unmigrated clients."""
3584
# Filter ghosts, and null:
3585
if _mod_revision.NULL_REVISION in revision_graph:
3586
del revision_graph[_mod_revision.NULL_REVISION]
3587
for key, parents in revision_graph.items():
3588
revision_graph[key] = tuple(parent for parent in parents if parent
3590
return revision_graph
added
removed
bzrlib/repository.py
