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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 suspend_write_group(self):
1098
raise errors.UnsuspendableWriteGroup(self)
1100
def resume_write_group(self, tokens):
1101
if not self.is_write_locked():
1102
raise errors.NotWriteLocked(self)
1103
if self._write_group:
1104
raise errors.BzrError('already in a write group')
1105
self._resume_write_group(tokens)
1106
# so we can detect unlock/relock - the write group is now entered.
1107
self._write_group = self.get_transaction()
1109
def _resume_write_group(self, tokens):
1110
raise errors.UnsuspendableWriteGroup(self)
1112
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False):
1113
"""Fetch the content required to construct revision_id from source.
1115
If revision_id is None all content is copied.
1116
:param find_ghosts: Find and copy revisions in the source that are
1117
ghosts in the target (and not reachable directly by walking out to
1118
the first-present revision in target from revision_id).
1120
# fast path same-url fetch operations
1121
if self.has_same_location(source):
1122
# check that last_revision is in 'from' and then return a
1124
if (revision_id is not None and
1125
not _mod_revision.is_null(revision_id)):
1126
self.get_revision(revision_id)
1128
# if there is no specific appropriate InterRepository, this will get
1129
# the InterRepository base class, which raises an
1130
# IncompatibleRepositories when asked to fetch.
1131
inter = InterRepository.get(source, self)
1132
return inter.fetch(revision_id=revision_id, pb=pb,
1133
find_ghosts=find_ghosts)
1135
def create_bundle(self, target, base, fileobj, format=None):
1136
return serializer.write_bundle(self, target, base, fileobj, format)
1138
def get_commit_builder(self, branch, parents, config, timestamp=None,
1139
timezone=None, committer=None, revprops=None,
1141
"""Obtain a CommitBuilder for this repository.
1143
:param branch: Branch to commit to.
1144
:param parents: Revision ids of the parents of the new revision.
1145
:param config: Configuration to use.
1146
:param timestamp: Optional timestamp recorded for commit.
1147
:param timezone: Optional timezone for timestamp.
1148
:param committer: Optional committer to set for commit.
1149
:param revprops: Optional dictionary of revision properties.
1150
:param revision_id: Optional revision id.
1152
result = self._commit_builder_class(self, parents, config,
1153
timestamp, timezone, committer, revprops, revision_id)
1154
self.start_write_group()
1158
if (self.control_files._lock_count == 1 and
1159
self.control_files._lock_mode == 'w'):
1160
if self._write_group is not None:
1161
self.abort_write_group()
1162
self.control_files.unlock()
1163
raise errors.BzrError(
1164
'Must end write groups before releasing write locks.')
1165
self.control_files.unlock()
1166
if self.control_files._lock_count == 0:
1167
self._inventory_entry_cache.clear()
1168
for repo in self._fallback_repositories:
1172
def clone(self, a_bzrdir, revision_id=None):
1173
"""Clone this repository into a_bzrdir using the current format.
1175
Currently no check is made that the format of this repository and
1176
the bzrdir format are compatible. FIXME RBC 20060201.
1178
:return: The newly created destination repository.
1180
# TODO: deprecate after 0.16; cloning this with all its settings is
1181
# probably not very useful -- mbp 20070423
1182
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
1183
self.copy_content_into(dest_repo, revision_id)
1186
def start_write_group(self):
1187
"""Start a write group in the repository.
1189
Write groups are used by repositories which do not have a 1:1 mapping
1190
between file ids and backend store to manage the insertion of data from
1191
both fetch and commit operations.
1193
A write lock is required around the start_write_group/commit_write_group
1194
for the support of lock-requiring repository formats.
1196
One can only insert data into a repository inside a write group.
1200
if not self.is_write_locked():
1201
raise errors.NotWriteLocked(self)
1202
if self._write_group:
1203
raise errors.BzrError('already in a write group')
1204
self._start_write_group()
1205
# so we can detect unlock/relock - the write group is now entered.
1206
self._write_group = self.get_transaction()
1208
def _start_write_group(self):
1209
"""Template method for per-repository write group startup.
1211
This is called before the write group is considered to be
1216
def sprout(self, to_bzrdir, revision_id=None):
1217
"""Create a descendent repository for new development.
1219
Unlike clone, this does not copy the settings of the repository.
1221
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1222
dest_repo.fetch(self, revision_id=revision_id)
1225
def _create_sprouting_repo(self, a_bzrdir, shared):
1226
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1227
# use target default format.
1228
dest_repo = a_bzrdir.create_repository()
1230
# Most control formats need the repository to be specifically
1231
# created, but on some old all-in-one formats it's not needed
1233
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1234
except errors.UninitializableFormat:
1235
dest_repo = a_bzrdir.open_repository()
1238
def _get_sink(self):
1239
"""Return a sink for streaming into this repository."""
1240
return StreamSink(self)
1243
def has_revision(self, revision_id):
1244
"""True if this repository has a copy of the revision."""
1245
return revision_id in self.has_revisions((revision_id,))
1248
def has_revisions(self, revision_ids):
1249
"""Probe to find out the presence of multiple revisions.
1251
:param revision_ids: An iterable of revision_ids.
1252
:return: A set of the revision_ids that were present.
1254
parent_map = self.revisions.get_parent_map(
1255
[(rev_id,) for rev_id in revision_ids])
1257
if _mod_revision.NULL_REVISION in revision_ids:
1258
result.add(_mod_revision.NULL_REVISION)
1259
result.update([key[0] for key in parent_map])
1263
def get_revision(self, revision_id):
1264
"""Return the Revision object for a named revision."""
1265
return self.get_revisions([revision_id])[0]
1268
def get_revision_reconcile(self, revision_id):
1269
"""'reconcile' helper routine that allows access to a revision always.
1271
This variant of get_revision does not cross check the weave graph
1272
against the revision one as get_revision does: but it should only
1273
be used by reconcile, or reconcile-alike commands that are correcting
1274
or testing the revision graph.
1276
return self._get_revisions([revision_id])[0]
1279
def get_revisions(self, revision_ids):
1280
"""Get many revisions at once."""
1281
return self._get_revisions(revision_ids)
1284
def _get_revisions(self, revision_ids):
1285
"""Core work logic to get many revisions without sanity checks."""
1286
for rev_id in revision_ids:
1287
if not rev_id or not isinstance(rev_id, basestring):
1288
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1289
keys = [(key,) for key in revision_ids]
1290
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1292
for record in stream:
1293
if record.storage_kind == 'absent':
1294
raise errors.NoSuchRevision(self, record.key[0])
1295
text = record.get_bytes_as('fulltext')
1296
rev = self._serializer.read_revision_from_string(text)
1297
revs[record.key[0]] = rev
1298
return [revs[revid] for revid in revision_ids]
1301
def get_revision_xml(self, revision_id):
1302
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1303
# would have already do it.
1304
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1305
rev = self.get_revision(revision_id)
1306
rev_tmp = cStringIO.StringIO()
1307
# the current serializer..
1308
self._serializer.write_revision(rev, rev_tmp)
1310
return rev_tmp.getvalue()
1312
def get_deltas_for_revisions(self, revisions):
1313
"""Produce a generator of revision deltas.
1315
Note that the input is a sequence of REVISIONS, not revision_ids.
1316
Trees will be held in memory until the generator exits.
1317
Each delta is relative to the revision's lefthand predecessor.
1319
required_trees = set()
1320
for revision in revisions:
1321
required_trees.add(revision.revision_id)
1322
required_trees.update(revision.parent_ids[:1])
1323
trees = dict((t.get_revision_id(), t) for
1324
t in self.revision_trees(required_trees))
1325
for revision in revisions:
1326
if not revision.parent_ids:
1327
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1329
old_tree = trees[revision.parent_ids[0]]
1330
yield trees[revision.revision_id].changes_from(old_tree)
1333
def get_revision_delta(self, revision_id):
1334
"""Return the delta for one revision.
1336
The delta is relative to the left-hand predecessor of the
1339
r = self.get_revision(revision_id)
1340
return list(self.get_deltas_for_revisions([r]))[0]
1343
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1344
signature = gpg_strategy.sign(plaintext)
1345
self.add_signature_text(revision_id, signature)
1348
def add_signature_text(self, revision_id, signature):
1349
self.signatures.add_lines((revision_id,), (),
1350
osutils.split_lines(signature))
1352
def find_text_key_references(self):
1353
"""Find the text key references within the repository.
1355
:return: a dictionary mapping (file_id, revision_id) tuples to altered file-ids to an iterable of
1356
revision_ids. Each altered file-ids has the exact revision_ids that
1357
altered it listed explicitly.
1358
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1359
to whether they were referred to by the inventory of the
1360
revision_id that they contain. The inventory texts from all present
1361
revision ids are assessed to generate this report.
1363
revision_keys = self.revisions.keys()
1364
w = self.inventories
1365
pb = ui.ui_factory.nested_progress_bar()
1367
return self._find_text_key_references_from_xml_inventory_lines(
1368
w.iter_lines_added_or_present_in_keys(revision_keys, pb=pb))
1372
def _find_text_key_references_from_xml_inventory_lines(self,
1374
"""Core routine for extracting references to texts from inventories.
1376
This performs the translation of xml lines to revision ids.
1378
:param line_iterator: An iterator of lines, origin_version_id
1379
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1380
to whether they were referred to by the inventory of the
1381
revision_id that they contain. Note that if that revision_id was
1382
not part of the line_iterator's output then False will be given -
1383
even though it may actually refer to that key.
1385
if not self._serializer.support_altered_by_hack:
1386
raise AssertionError(
1387
"_find_text_key_references_from_xml_inventory_lines only "
1388
"supported for branches which store inventory as unnested xml"
1389
", not on %r" % self)
1392
# this code needs to read every new line in every inventory for the
1393
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
1394
# not present in one of those inventories is unnecessary but not
1395
# harmful because we are filtering by the revision id marker in the
1396
# inventory lines : we only select file ids altered in one of those
1397
# revisions. We don't need to see all lines in the inventory because
1398
# only those added in an inventory in rev X can contain a revision=X
1400
unescape_revid_cache = {}
1401
unescape_fileid_cache = {}
1403
# jam 20061218 In a big fetch, this handles hundreds of thousands
1404
# of lines, so it has had a lot of inlining and optimizing done.
1405
# Sorry that it is a little bit messy.
1406
# Move several functions to be local variables, since this is a long
1408
search = self._file_ids_altered_regex.search
1409
unescape = _unescape_xml
1410
setdefault = result.setdefault
1411
for line, line_key in line_iterator:
1412
match = search(line)
1415
# One call to match.group() returning multiple items is quite a
1416
# bit faster than 2 calls to match.group() each returning 1
1417
file_id, revision_id = match.group('file_id', 'revision_id')
1419
# Inlining the cache lookups helps a lot when you make 170,000
1420
# lines and 350k ids, versus 8.4 unique ids.
1421
# Using a cache helps in 2 ways:
1422
# 1) Avoids unnecessary decoding calls
1423
# 2) Re-uses cached strings, which helps in future set and
1425
# (2) is enough that removing encoding entirely along with
1426
# the cache (so we are using plain strings) results in no
1427
# performance improvement.
1429
revision_id = unescape_revid_cache[revision_id]
1431
unescaped = unescape(revision_id)
1432
unescape_revid_cache[revision_id] = unescaped
1433
revision_id = unescaped
1435
# Note that unconditionally unescaping means that we deserialise
1436
# every fileid, which for general 'pull' is not great, but we don't
1437
# really want to have some many fulltexts that this matters anyway.
1440
file_id = unescape_fileid_cache[file_id]
1442
unescaped = unescape(file_id)
1443
unescape_fileid_cache[file_id] = unescaped
1446
key = (file_id, revision_id)
1447
setdefault(key, False)
1448
if revision_id == line_key[-1]:
1452
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
1454
"""Helper routine for fileids_altered_by_revision_ids.
1456
This performs the translation of xml lines to revision ids.
1458
:param line_iterator: An iterator of lines, origin_version_id
1459
:param revision_ids: The revision ids to filter for. This should be a
1460
set or other type which supports efficient __contains__ lookups, as
1461
the revision id from each parsed line will be looked up in the
1462
revision_ids filter.
1463
:return: a dictionary mapping altered file-ids to an iterable of
1464
revision_ids. Each altered file-ids has the exact revision_ids that
1465
altered it listed explicitly.
1468
setdefault = result.setdefault
1470
self._find_text_key_references_from_xml_inventory_lines(
1471
line_iterator).iterkeys():
1472
# once data is all ensured-consistent; then this is
1473
# if revision_id == version_id
1474
if key[-1:] in revision_ids:
1475
setdefault(key[0], set()).add(key[-1])
1478
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
1479
"""Find the file ids and versions affected by revisions.
1481
:param revisions: an iterable containing revision ids.
1482
:param _inv_weave: The inventory weave from this repository or None.
1483
If None, the inventory weave will be opened automatically.
1484
:return: a dictionary mapping altered file-ids to an iterable of
1485
revision_ids. Each altered file-ids has the exact revision_ids that
1486
altered it listed explicitly.
1488
selected_keys = set((revid,) for revid in revision_ids)
1489
w = _inv_weave or self.inventories
1490
pb = ui.ui_factory.nested_progress_bar()
1492
return self._find_file_ids_from_xml_inventory_lines(
1493
w.iter_lines_added_or_present_in_keys(
1494
selected_keys, pb=pb),
1499
def iter_files_bytes(self, desired_files):
1500
"""Iterate through file versions.
1502
Files will not necessarily be returned in the order they occur in
1503
desired_files. No specific order is guaranteed.
1505
Yields pairs of identifier, bytes_iterator. identifier is an opaque
1506
value supplied by the caller as part of desired_files. It should
1507
uniquely identify the file version in the caller's context. (Examples:
1508
an index number or a TreeTransform trans_id.)
1510
bytes_iterator is an iterable of bytestrings for the file. The
1511
kind of iterable and length of the bytestrings are unspecified, but for
1512
this implementation, it is a list of bytes produced by
1513
VersionedFile.get_record_stream().
1515
:param desired_files: a list of (file_id, revision_id, identifier)
1519
for file_id, revision_id, callable_data in desired_files:
1520
text_keys[(file_id, revision_id)] = callable_data
1521
for record in self.texts.get_record_stream(text_keys, 'unordered', True):
1522
if record.storage_kind == 'absent':
1523
raise errors.RevisionNotPresent(record.key, self)
1524
yield text_keys[record.key], record.get_bytes_as('fulltext')
1526
def _generate_text_key_index(self, text_key_references=None,
1528
"""Generate a new text key index for the repository.
1530
This is an expensive function that will take considerable time to run.
1532
:return: A dict mapping text keys ((file_id, revision_id) tuples) to a
1533
list of parents, also text keys. When a given key has no parents,
1534
the parents list will be [NULL_REVISION].
1536
# All revisions, to find inventory parents.
1537
if ancestors is None:
1538
graph = self.get_graph()
1539
ancestors = graph.get_parent_map(self.all_revision_ids())
1540
if text_key_references is None:
1541
text_key_references = self.find_text_key_references()
1542
pb = ui.ui_factory.nested_progress_bar()
1544
return self._do_generate_text_key_index(ancestors,
1545
text_key_references, pb)
1549
def _do_generate_text_key_index(self, ancestors, text_key_references, pb):
1550
"""Helper for _generate_text_key_index to avoid deep nesting."""
1551
revision_order = tsort.topo_sort(ancestors)
1552
invalid_keys = set()
1554
for revision_id in revision_order:
1555
revision_keys[revision_id] = set()
1556
text_count = len(text_key_references)
1557
# a cache of the text keys to allow reuse; costs a dict of all the
1558
# keys, but saves a 2-tuple for every child of a given key.
1560
for text_key, valid in text_key_references.iteritems():
1562
invalid_keys.add(text_key)
1564
revision_keys[text_key[1]].add(text_key)
1565
text_key_cache[text_key] = text_key
1566
del text_key_references
1568
text_graph = graph.Graph(graph.DictParentsProvider(text_index))
1569
NULL_REVISION = _mod_revision.NULL_REVISION
1570
# Set a cache with a size of 10 - this suffices for bzr.dev but may be
1571
# too small for large or very branchy trees. However, for 55K path
1572
# trees, it would be easy to use too much memory trivially. Ideally we
1573
# could gauge this by looking at available real memory etc, but this is
1574
# always a tricky proposition.
1575
inventory_cache = lru_cache.LRUCache(10)
1576
batch_size = 10 # should be ~150MB on a 55K path tree
1577
batch_count = len(revision_order) / batch_size + 1
1579
pb.update("Calculating text parents.", processed_texts, text_count)
1580
for offset in xrange(batch_count):
1581
to_query = revision_order[offset * batch_size:(offset + 1) *
1585
for rev_tree in self.revision_trees(to_query):
1586
revision_id = rev_tree.get_revision_id()
1587
parent_ids = ancestors[revision_id]
1588
for text_key in revision_keys[revision_id]:
1589
pb.update("Calculating text parents.", processed_texts)
1590
processed_texts += 1
1591
candidate_parents = []
1592
for parent_id in parent_ids:
1593
parent_text_key = (text_key[0], parent_id)
1595
check_parent = parent_text_key not in \
1596
revision_keys[parent_id]
1598
# the parent parent_id is a ghost:
1599
check_parent = False
1600
# truncate the derived graph against this ghost.
1601
parent_text_key = None
1603
# look at the parent commit details inventories to
1604
# determine possible candidates in the per file graph.
1607
inv = inventory_cache[parent_id]
1609
inv = self.revision_tree(parent_id).inventory
1610
inventory_cache[parent_id] = inv
1611
parent_entry = inv._byid.get(text_key[0], None)
1612
if parent_entry is not None:
1614
text_key[0], parent_entry.revision)
1616
parent_text_key = None
1617
if parent_text_key is not None:
1618
candidate_parents.append(
1619
text_key_cache[parent_text_key])
1620
parent_heads = text_graph.heads(candidate_parents)
1621
new_parents = list(parent_heads)
1622
new_parents.sort(key=lambda x:candidate_parents.index(x))
1623
if new_parents == []:
1624
new_parents = [NULL_REVISION]
1625
text_index[text_key] = new_parents
1627
for text_key in invalid_keys:
1628
text_index[text_key] = [NULL_REVISION]
1631
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
1632
"""Get an iterable listing the keys of all the data introduced by a set
1635
The keys will be ordered so that the corresponding items can be safely
1636
fetched and inserted in that order.
1638
:returns: An iterable producing tuples of (knit-kind, file-id,
1639
versions). knit-kind is one of 'file', 'inventory', 'signatures',
1640
'revisions'. file-id is None unless knit-kind is 'file'.
1642
# XXX: it's a bit weird to control the inventory weave caching in this
1643
# generator. Ideally the caching would be done in fetch.py I think. Or
1644
# maybe this generator should explicitly have the contract that it
1645
# should not be iterated until the previously yielded item has been
1647
inv_w = self.inventories
1649
# file ids that changed
1650
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
1652
num_file_ids = len(file_ids)
1653
for file_id, altered_versions in file_ids.iteritems():
1654
if _files_pb is not None:
1655
_files_pb.update("fetch texts", count, num_file_ids)
1657
yield ("file", file_id, altered_versions)
1658
# We're done with the files_pb. Note that it finished by the caller,
1659
# just as it was created by the caller.
1663
yield ("inventory", None, revision_ids)
1666
# XXX: Note ATM no callers actually pay attention to this return
1667
# instead they just use the list of revision ids and ignore
1668
# missing sigs. Consider removing this work entirely
1669
revisions_with_signatures = set(self.signatures.get_parent_map(
1670
[(r,) for r in revision_ids]))
1671
revisions_with_signatures = set(
1672
[r for (r,) in revisions_with_signatures])
1673
revisions_with_signatures.intersection_update(revision_ids)
1674
yield ("signatures", None, revisions_with_signatures)
1677
yield ("revisions", None, revision_ids)
1680
def get_inventory(self, revision_id):
1681
"""Get Inventory object by revision id."""
1682
return self.iter_inventories([revision_id]).next()
1684
def iter_inventories(self, revision_ids):
1685
"""Get many inventories by revision_ids.
1687
This will buffer some or all of the texts used in constructing the
1688
inventories in memory, but will only parse a single inventory at a
1691
:return: An iterator of inventories.
1693
if ((None in revision_ids)
1694
or (_mod_revision.NULL_REVISION in revision_ids)):
1695
raise ValueError('cannot get null revision inventory')
1696
return self._iter_inventories(revision_ids)
1698
def _iter_inventories(self, revision_ids):
1699
"""single-document based inventory iteration."""
1700
for text, revision_id in self._iter_inventory_xmls(revision_ids):
1701
yield self.deserialise_inventory(revision_id, text)
1703
def _iter_inventory_xmls(self, revision_ids):
1704
keys = [(revision_id,) for revision_id in revision_ids]
1705
stream = self.inventories.get_record_stream(keys, 'unordered', True)
1707
for record in stream:
1708
if record.storage_kind != 'absent':
1709
text_chunks[record.key] = record.get_bytes_as('chunked')
1711
raise errors.NoSuchRevision(self, record.key)
1713
chunks = text_chunks.pop(key)
1714
yield ''.join(chunks), key[-1]
1716
def deserialise_inventory(self, revision_id, xml):
1717
"""Transform the xml into an inventory object.
1719
:param revision_id: The expected revision id of the inventory.
1720
:param xml: A serialised inventory.
1722
result = self._serializer.read_inventory_from_string(xml, revision_id,
1723
entry_cache=self._inventory_entry_cache)
1724
if result.revision_id != revision_id:
1725
raise AssertionError('revision id mismatch %s != %s' % (
1726
result.revision_id, revision_id))
1729
def serialise_inventory(self, inv):
1730
return self._serializer.write_inventory_to_string(inv)
1732
def _serialise_inventory_to_lines(self, inv):
1733
return self._serializer.write_inventory_to_lines(inv)
1735
def get_serializer_format(self):
1736
return self._serializer.format_num
1739
def get_inventory_xml(self, revision_id):
1740
"""Get inventory XML as a file object."""
1741
texts = self._iter_inventory_xmls([revision_id])
1743
text, revision_id = texts.next()
1744
except StopIteration:
1745
raise errors.HistoryMissing(self, 'inventory', revision_id)
1749
def get_inventory_sha1(self, revision_id):
1750
"""Return the sha1 hash of the inventory entry
1752
return self.get_revision(revision_id).inventory_sha1
1754
def iter_reverse_revision_history(self, revision_id):
1755
"""Iterate backwards through revision ids in the lefthand history
1757
:param revision_id: The revision id to start with. All its lefthand
1758
ancestors will be traversed.
1760
graph = self.get_graph()
1761
next_id = revision_id
1763
if next_id in (None, _mod_revision.NULL_REVISION):
1766
# Note: The following line may raise KeyError in the event of
1767
# truncated history. We decided not to have a try:except:raise
1768
# RevisionNotPresent here until we see a use for it, because of the
1769
# cost in an inner loop that is by its very nature O(history).
1770
# Robert Collins 20080326
1771
parents = graph.get_parent_map([next_id])[next_id]
1772
if len(parents) == 0:
1775
next_id = parents[0]
1778
def get_revision_inventory(self, revision_id):
1779
"""Return inventory of a past revision."""
1780
# TODO: Unify this with get_inventory()
1781
# bzr 0.0.6 and later imposes the constraint that the inventory_id
1782
# must be the same as its revision, so this is trivial.
1783
if revision_id is None:
1784
# This does not make sense: if there is no revision,
1785
# then it is the current tree inventory surely ?!
1786
# and thus get_root_id() is something that looks at the last
1787
# commit on the branch, and the get_root_id is an inventory check.
1788
raise NotImplementedError
1789
# return Inventory(self.get_root_id())
1791
return self.get_inventory(revision_id)
1793
def is_shared(self):
1794
"""Return True if this repository is flagged as a shared repository."""
1795
raise NotImplementedError(self.is_shared)
1798
def reconcile(self, other=None, thorough=False):
1799
"""Reconcile this repository."""
1800
from bzrlib.reconcile import RepoReconciler
1801
reconciler = RepoReconciler(self, thorough=thorough)
1802
reconciler.reconcile()
1805
def _refresh_data(self):
1806
"""Helper called from lock_* to ensure coherency with disk.
1808
The default implementation does nothing; it is however possible
1809
for repositories to maintain loaded indices across multiple locks
1810
by checking inside their implementation of this method to see
1811
whether their indices are still valid. This depends of course on
1812
the disk format being validatable in this manner.
1816
def revision_tree(self, revision_id):
1817
"""Return Tree for a revision on this branch.
1819
`revision_id` may be NULL_REVISION for the empty tree revision.
1821
revision_id = _mod_revision.ensure_null(revision_id)
1822
# TODO: refactor this to use an existing revision object
1823
# so we don't need to read it in twice.
1824
if revision_id == _mod_revision.NULL_REVISION:
1825
return RevisionTree(self, Inventory(root_id=None),
1826
_mod_revision.NULL_REVISION)
1828
inv = self.get_revision_inventory(revision_id)
1829
return RevisionTree(self, inv, revision_id)
1831
def revision_trees(self, revision_ids):
1832
"""Return Tree for a revision on this branch.
1834
`revision_id` may not be None or 'null:'"""
1835
inventories = self.iter_inventories(revision_ids)
1836
for inv in inventories:
1837
yield RevisionTree(self, inv, inv.revision_id)
1840
def get_ancestry(self, revision_id, topo_sorted=True):
1841
"""Return a list of revision-ids integrated by a revision.
1843
The first element of the list is always None, indicating the origin
1844
revision. This might change when we have history horizons, or
1845
perhaps we should have a new API.
1847
This is topologically sorted.
1849
if _mod_revision.is_null(revision_id):
1851
if not self.has_revision(revision_id):
1852
raise errors.NoSuchRevision(self, revision_id)
1853
graph = self.get_graph()
1855
search = graph._make_breadth_first_searcher([revision_id])
1858
found, ghosts = search.next_with_ghosts()
1859
except StopIteration:
1862
if _mod_revision.NULL_REVISION in keys:
1863
keys.remove(_mod_revision.NULL_REVISION)
1865
parent_map = graph.get_parent_map(keys)
1866
keys = tsort.topo_sort(parent_map)
1867
return [None] + list(keys)
1870
"""Compress the data within the repository.
1872
This operation only makes sense for some repository types. For other
1873
types it should be a no-op that just returns.
1875
This stub method does not require a lock, but subclasses should use
1876
@needs_write_lock as this is a long running call its reasonable to
1877
implicitly lock for the user.
1881
@deprecated_method(one_six)
1882
def print_file(self, file, revision_id):
1883
"""Print `file` to stdout.
1885
FIXME RBC 20060125 as John Meinel points out this is a bad api
1886
- it writes to stdout, it assumes that that is valid etc. Fix
1887
by creating a new more flexible convenience function.
1889
tree = self.revision_tree(revision_id)
1890
# use inventory as it was in that revision
1891
file_id = tree.inventory.path2id(file)
1893
# TODO: jam 20060427 Write a test for this code path
1894
# it had a bug in it, and was raising the wrong
1896
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1897
tree.print_file(file_id)
1899
def get_transaction(self):
1900
return self.control_files.get_transaction()
1902
@deprecated_method(one_one)
1903
def get_parents(self, revision_ids):
1904
"""See StackedParentsProvider.get_parents"""
1905
parent_map = self.get_parent_map(revision_ids)
1906
return [parent_map.get(r, None) for r in revision_ids]
1908
def get_parent_map(self, revision_ids):
1909
"""See graph._StackedParentsProvider.get_parent_map"""
1910
# revisions index works in keys; this just works in revisions
1911
# therefore wrap and unwrap
1914
for revision_id in revision_ids:
1915
if revision_id == _mod_revision.NULL_REVISION:
1916
result[revision_id] = ()
1917
elif revision_id is None:
1918
raise ValueError('get_parent_map(None) is not valid')
1920
query_keys.append((revision_id ,))
1921
for ((revision_id,), parent_keys) in \
1922
self.revisions.get_parent_map(query_keys).iteritems():
1924
result[revision_id] = tuple(parent_revid
1925
for (parent_revid,) in parent_keys)
1927
result[revision_id] = (_mod_revision.NULL_REVISION,)
1930
def _make_parents_provider(self):
1933
def get_graph(self, other_repository=None):
1934
"""Return the graph walker for this repository format"""
1935
parents_provider = self._make_parents_provider()
1936
if (other_repository is not None and
1937
not self.has_same_location(other_repository)):
1938
parents_provider = graph._StackedParentsProvider(
1939
[parents_provider, other_repository._make_parents_provider()])
1940
return graph.Graph(parents_provider)
1942
def _get_versioned_file_checker(self):
1943
"""Return an object suitable for checking versioned files."""
1944
return _VersionedFileChecker(self)
1946
def revision_ids_to_search_result(self, result_set):
1947
"""Convert a set of revision ids to a graph SearchResult."""
1948
result_parents = set()
1949
for parents in self.get_graph().get_parent_map(
1950
result_set).itervalues():
1951
result_parents.update(parents)
1952
included_keys = result_set.intersection(result_parents)
1953
start_keys = result_set.difference(included_keys)
1954
exclude_keys = result_parents.difference(result_set)
1955
result = graph.SearchResult(start_keys, exclude_keys,
1956
len(result_set), result_set)
1960
def set_make_working_trees(self, new_value):
1961
"""Set the policy flag for making working trees when creating branches.
1963
This only applies to branches that use this repository.
1965
The default is 'True'.
1966
:param new_value: True to restore the default, False to disable making
1969
raise NotImplementedError(self.set_make_working_trees)
1971
def make_working_trees(self):
1972
"""Returns the policy for making working trees on new branches."""
1973
raise NotImplementedError(self.make_working_trees)
1976
def sign_revision(self, revision_id, gpg_strategy):
1977
plaintext = Testament.from_revision(self, revision_id).as_short_text()
1978
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1981
def has_signature_for_revision_id(self, revision_id):
1982
"""Query for a revision signature for revision_id in the repository."""
1983
if not self.has_revision(revision_id):
1984
raise errors.NoSuchRevision(self, revision_id)
1985
sig_present = (1 == len(
1986
self.signatures.get_parent_map([(revision_id,)])))
1990
def get_signature_text(self, revision_id):
1991
"""Return the text for a signature."""
1992
stream = self.signatures.get_record_stream([(revision_id,)],
1994
record = stream.next()
1995
if record.storage_kind == 'absent':
1996
raise errors.NoSuchRevision(self, revision_id)
1997
return record.get_bytes_as('fulltext')
2000
def check(self, revision_ids=None):
2001
"""Check consistency of all history of given revision_ids.
2003
Different repository implementations should override _check().
2005
:param revision_ids: A non-empty list of revision_ids whose ancestry
2006
will be checked. Typically the last revision_id of a branch.
2008
return self._check(revision_ids)
2010
def _check(self, revision_ids):
2011
result = check.Check(self)
2015
def _warn_if_deprecated(self):
2016
global _deprecation_warning_done
2017
if _deprecation_warning_done:
2019
_deprecation_warning_done = True
2020
warning("Format %s for %s is deprecated - please use 'bzr upgrade' to get better performance"
2021
% (self._format, self.bzrdir.transport.base))
2023
def supports_rich_root(self):
2024
return self._format.rich_root_data
2026
def _check_ascii_revisionid(self, revision_id, method):
2027
"""Private helper for ascii-only repositories."""
2028
# weave repositories refuse to store revisionids that are non-ascii.
2029
if revision_id is not None:
2030
# weaves require ascii revision ids.
2031
if isinstance(revision_id, unicode):
2033
revision_id.encode('ascii')
2034
except UnicodeEncodeError:
2035
raise errors.NonAsciiRevisionId(method, self)
2038
revision_id.decode('ascii')
2039
except UnicodeDecodeError:
2040
raise errors.NonAsciiRevisionId(method, self)
2042
def revision_graph_can_have_wrong_parents(self):
2043
"""Is it possible for this repository to have a revision graph with
2046
If True, then this repository must also implement
2047
_find_inconsistent_revision_parents so that check and reconcile can
2048
check for inconsistencies before proceeding with other checks that may
2049
depend on the revision index being consistent.
2051
raise NotImplementedError(self.revision_graph_can_have_wrong_parents)
2054
# remove these delegates a while after bzr 0.15
2055
def __make_delegated(name, from_module):
2056
def _deprecated_repository_forwarder():
2057
symbol_versioning.warn('%s moved to %s in bzr 0.15'
2058
% (name, from_module),
2061
m = __import__(from_module, globals(), locals(), [name])
2063
return getattr(m, name)
2064
except AttributeError:
2065
raise AttributeError('module %s has no name %s'
2067
globals()[name] = _deprecated_repository_forwarder
2070
'AllInOneRepository',
2071
'WeaveMetaDirRepository',
2072
'PreSplitOutRepositoryFormat',
2073
'RepositoryFormat4',
2074
'RepositoryFormat5',
2075
'RepositoryFormat6',
2076
'RepositoryFormat7',
2078
__make_delegated(_name, 'bzrlib.repofmt.weaverepo')
2082
'RepositoryFormatKnit',
2083
'RepositoryFormatKnit1',
2085
__make_delegated(_name, 'bzrlib.repofmt.knitrepo')
2088
def install_revision(repository, rev, revision_tree):
2089
"""Install all revision data into a repository."""
2090
install_revisions(repository, [(rev, revision_tree, None)])
2093
def install_revisions(repository, iterable, num_revisions=None, pb=None):
2094
"""Install all revision data into a repository.
2096
Accepts an iterable of revision, tree, signature tuples. The signature
2099
repository.start_write_group()
2101
for n, (revision, revision_tree, signature) in enumerate(iterable):
2102
_install_revision(repository, revision, revision_tree, signature)
2104
pb.update('Transferring revisions', n + 1, num_revisions)
2106
repository.abort_write_group()
2109
repository.commit_write_group()
2112
def _install_revision(repository, rev, revision_tree, signature):
2113
"""Install all revision data into a repository."""
2114
present_parents = []
2116
for p_id in rev.parent_ids:
2117
if repository.has_revision(p_id):
2118
present_parents.append(p_id)
2119
parent_trees[p_id] = repository.revision_tree(p_id)
2121
parent_trees[p_id] = repository.revision_tree(
2122
_mod_revision.NULL_REVISION)
2124
inv = revision_tree.inventory
2125
entries = inv.iter_entries()
2126
# backwards compatibility hack: skip the root id.
2127
if not repository.supports_rich_root():
2128
path, root = entries.next()
2129
if root.revision != rev.revision_id:
2130
raise errors.IncompatibleRevision(repr(repository))
2132
for path, ie in entries:
2133
text_keys[(ie.file_id, ie.revision)] = ie
2134
text_parent_map = repository.texts.get_parent_map(text_keys)
2135
missing_texts = set(text_keys) - set(text_parent_map)
2136
# Add the texts that are not already present
2137
for text_key in missing_texts:
2138
ie = text_keys[text_key]
2140
# FIXME: TODO: The following loop overlaps/duplicates that done by
2141
# commit to determine parents. There is a latent/real bug here where
2142
# the parents inserted are not those commit would do - in particular
2143
# they are not filtered by heads(). RBC, AB
2144
for revision, tree in parent_trees.iteritems():
2145
if ie.file_id not in tree:
2147
parent_id = tree.inventory[ie.file_id].revision
2148
if parent_id in text_parents:
2150
text_parents.append((ie.file_id, parent_id))
2151
lines = revision_tree.get_file(ie.file_id).readlines()
2152
repository.texts.add_lines(text_key, text_parents, lines)
2154
# install the inventory
2155
repository.add_inventory(rev.revision_id, inv, present_parents)
2156
except errors.RevisionAlreadyPresent:
2158
if signature is not None:
2159
repository.add_signature_text(rev.revision_id, signature)
2160
repository.add_revision(rev.revision_id, rev, inv)
2163
class MetaDirRepository(Repository):
2164
"""Repositories in the new meta-dir layout.
2166
:ivar _transport: Transport for access to repository control files,
2167
typically pointing to .bzr/repository.
2170
def __init__(self, _format, a_bzrdir, control_files):
2171
super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
2172
self._transport = control_files._transport
2174
def is_shared(self):
2175
"""Return True if this repository is flagged as a shared repository."""
2176
return self._transport.has('shared-storage')
2179
def set_make_working_trees(self, new_value):
2180
"""Set the policy flag for making working trees when creating branches.
2182
This only applies to branches that use this repository.
2184
The default is 'True'.
2185
:param new_value: True to restore the default, False to disable making
2190
self._transport.delete('no-working-trees')
2191
except errors.NoSuchFile:
2194
self._transport.put_bytes('no-working-trees', '',
2195
mode=self.bzrdir._get_file_mode())
2197
def make_working_trees(self):
2198
"""Returns the policy for making working trees on new branches."""
2199
return not self._transport.has('no-working-trees')
2202
class MetaDirVersionedFileRepository(MetaDirRepository):
2203
"""Repositories in a meta-dir, that work via versioned file objects."""
2205
def __init__(self, _format, a_bzrdir, control_files):
2206
super(MetaDirVersionedFileRepository, self).__init__(_format, a_bzrdir,
2210
class RepositoryFormatRegistry(registry.Registry):
2211
"""Registry of RepositoryFormats."""
2213
def __init__(self, other_registry=None):
2214
registry.Registry.__init__(self)
2215
self._other_registry = other_registry
2217
def register_lazy(self, key, module_name, member_name,
2218
help=None, info=None,
2219
override_existing=False):
2220
# Overridden to allow capturing registrations to two seperate
2221
# registries in a single call.
2222
registry.Registry.register_lazy(self, key, module_name, member_name,
2223
help=help, info=info, override_existing=override_existing)
2224
if self._other_registry is not None:
2225
self._other_registry.register_lazy(key, module_name, member_name,
2226
help=help, info=info, override_existing=override_existing)
2228
def get(self, format_string):
2229
r = registry.Registry.get(self, format_string)
2235
network_format_registry = RepositoryFormatRegistry()
2236
"""Registry of formats indexed by their network name.
2238
The network name for a repository format is an identifier that can be used when
2239
referring to formats with smart server operations. See
2240
RepositoryFormat.network_name() for more detail.
2244
format_registry = RepositoryFormatRegistry(network_format_registry)
2245
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
2247
This can contain either format instances themselves, or classes/factories that
2248
can be called to obtain one.
2252
#####################################################################
2253
# Repository Formats
2255
class RepositoryFormat(object):
2256
"""A repository format.
2258
Formats provide four things:
2259
* An initialization routine to construct repository data on disk.
2260
* a optional format string which is used when the BzrDir supports
2262
* an open routine which returns a Repository instance.
2263
* A network name for referring to the format in smart server RPC
2266
There is one and only one Format subclass for each on-disk format. But
2267
there can be one Repository subclass that is used for several different
2268
formats. The _format attribute on a Repository instance can be used to
2269
determine the disk format.
2271
Formats are placed in a registry by their format string for reference
2272
during opening. These should be subclasses of RepositoryFormat for
2275
Once a format is deprecated, just deprecate the initialize and open
2276
methods on the format class. Do not deprecate the object, as the
2277
object may be created even when a repository instnace hasn't been
2280
Common instance attributes:
2281
_matchingbzrdir - the bzrdir format that the repository format was
2282
originally written to work with. This can be used if manually
2283
constructing a bzrdir and repository, or more commonly for test suite
2287
# Set to True or False in derived classes. True indicates that the format
2288
# supports ghosts gracefully.
2289
supports_ghosts = None
2290
# Can this repository be given external locations to lookup additional
2291
# data. Set to True or False in derived classes.
2292
supports_external_lookups = None
2295
return "<%s>" % self.__class__.__name__
2297
def __eq__(self, other):
2298
# format objects are generally stateless
2299
return isinstance(other, self.__class__)
2301
def __ne__(self, other):
2302
return not self == other
2305
def find_format(klass, a_bzrdir):
2306
"""Return the format for the repository object in a_bzrdir.
2308
This is used by bzr native formats that have a "format" file in
2309
the repository. Other methods may be used by different types of
2313
transport = a_bzrdir.get_repository_transport(None)
2314
format_string = transport.get("format").read()
2315
return format_registry.get(format_string)
2316
except errors.NoSuchFile:
2317
raise errors.NoRepositoryPresent(a_bzrdir)
2319
raise errors.UnknownFormatError(format=format_string,
2323
def register_format(klass, format):
2324
format_registry.register(format.get_format_string(), format)
2327
def unregister_format(klass, format):
2328
format_registry.remove(format.get_format_string())
2331
def get_default_format(klass):
2332
"""Return the current default format."""
2333
from bzrlib import bzrdir
2334
return bzrdir.format_registry.make_bzrdir('default').repository_format
2336
def get_format_string(self):
2337
"""Return the ASCII format string that identifies this format.
2339
Note that in pre format ?? repositories the format string is
2340
not permitted nor written to disk.
2342
raise NotImplementedError(self.get_format_string)
2344
def get_format_description(self):
2345
"""Return the short description for this format."""
2346
raise NotImplementedError(self.get_format_description)
2348
# TODO: this shouldn't be in the base class, it's specific to things that
2349
# use weaves or knits -- mbp 20070207
2350
def _get_versioned_file_store(self,
2355
versionedfile_class=None,
2356
versionedfile_kwargs={},
2358
if versionedfile_class is None:
2359
versionedfile_class = self._versionedfile_class
2360
weave_transport = control_files._transport.clone(name)
2361
dir_mode = control_files._dir_mode
2362
file_mode = control_files._file_mode
2363
return VersionedFileStore(weave_transport, prefixed=prefixed,
2365
file_mode=file_mode,
2366
versionedfile_class=versionedfile_class,
2367
versionedfile_kwargs=versionedfile_kwargs,
2370
def initialize(self, a_bzrdir, shared=False):
2371
"""Initialize a repository of this format in a_bzrdir.
2373
:param a_bzrdir: The bzrdir to put the new repository in it.
2374
:param shared: The repository should be initialized as a sharable one.
2375
:returns: The new repository object.
2377
This may raise UninitializableFormat if shared repository are not
2378
compatible the a_bzrdir.
2380
raise NotImplementedError(self.initialize)
2382
def is_supported(self):
2383
"""Is this format supported?
2385
Supported formats must be initializable and openable.
2386
Unsupported formats may not support initialization or committing or
2387
some other features depending on the reason for not being supported.
2391
def network_name(self):
2392
"""A simple byte string uniquely identifying this format for RPC calls.
2394
MetaDir repository formats use their disk format string to identify the
2395
repository over the wire. All in one formats such as bzr < 0.8, and
2396
foreign formats like svn/git and hg should use some marker which is
2397
unique and immutable.
2399
raise NotImplementedError(self.network_name)
2401
def check_conversion_target(self, target_format):
2402
raise NotImplementedError(self.check_conversion_target)
2404
def open(self, a_bzrdir, _found=False):
2405
"""Return an instance of this format for the bzrdir a_bzrdir.
2407
_found is a private parameter, do not use it.
2409
raise NotImplementedError(self.open)
2412
class MetaDirRepositoryFormat(RepositoryFormat):
2413
"""Common base class for the new repositories using the metadir layout."""
2415
rich_root_data = False
2416
supports_tree_reference = False
2417
supports_external_lookups = False
2420
def _matchingbzrdir(self):
2421
matching = bzrdir.BzrDirMetaFormat1()
2422
matching.repository_format = self
2426
super(MetaDirRepositoryFormat, self).__init__()
2428
def _create_control_files(self, a_bzrdir):
2429
"""Create the required files and the initial control_files object."""
2430
# FIXME: RBC 20060125 don't peek under the covers
2431
# NB: no need to escape relative paths that are url safe.
2432
repository_transport = a_bzrdir.get_repository_transport(self)
2433
control_files = lockable_files.LockableFiles(repository_transport,
2434
'lock', lockdir.LockDir)
2435
control_files.create_lock()
2436
return control_files
2438
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
2439
"""Upload the initial blank content."""
2440
control_files = self._create_control_files(a_bzrdir)
2441
control_files.lock_write()
2442
transport = control_files._transport
2444
utf8_files += [('shared-storage', '')]
2446
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
2447
for (filename, content_stream) in files:
2448
transport.put_file(filename, content_stream,
2449
mode=a_bzrdir._get_file_mode())
2450
for (filename, content_bytes) in utf8_files:
2451
transport.put_bytes_non_atomic(filename, content_bytes,
2452
mode=a_bzrdir._get_file_mode())
2454
control_files.unlock()
2456
def network_name(self):
2457
"""Metadir formats have matching disk and network format strings."""
2458
return self.get_format_string()
2461
# Pre-0.8 formats that don't have a disk format string (because they are
2462
# versioned by the matching control directory). We use the control directories
2463
# disk format string as a key for the network_name because they meet the
2464
# constraints (simple string, unique, immmutable).
2465
network_format_registry.register_lazy(
2466
"Bazaar-NG branch, format 5\n",
2467
'bzrlib.repofmt.weaverepo',
2468
'RepositoryFormat5',
2470
network_format_registry.register_lazy(
2471
"Bazaar-NG branch, format 6\n",
2472
'bzrlib.repofmt.weaverepo',
2473
'RepositoryFormat6',
2476
# formats which have no format string are not discoverable or independently
2477
# creatable on disk, so are not registered in format_registry. They're
2478
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
2479
# needed, it's constructed directly by the BzrDir. Non-native formats where
2480
# the repository is not separately opened are similar.
2482
format_registry.register_lazy(
2483
'Bazaar-NG Repository format 7',
2484
'bzrlib.repofmt.weaverepo',
2488
format_registry.register_lazy(
2489
'Bazaar-NG Knit Repository Format 1',
2490
'bzrlib.repofmt.knitrepo',
2491
'RepositoryFormatKnit1',
2494
format_registry.register_lazy(
2495
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
2496
'bzrlib.repofmt.knitrepo',
2497
'RepositoryFormatKnit3',
2500
format_registry.register_lazy(
2501
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
2502
'bzrlib.repofmt.knitrepo',
2503
'RepositoryFormatKnit4',
2506
# Pack-based formats. There is one format for pre-subtrees, and one for
2507
# post-subtrees to allow ease of testing.
2508
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
2509
format_registry.register_lazy(
2510
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
2511
'bzrlib.repofmt.pack_repo',
2512
'RepositoryFormatKnitPack1',
2514
format_registry.register_lazy(
2515
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
2516
'bzrlib.repofmt.pack_repo',
2517
'RepositoryFormatKnitPack3',
2519
format_registry.register_lazy(
2520
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
2521
'bzrlib.repofmt.pack_repo',
2522
'RepositoryFormatKnitPack4',
2524
format_registry.register_lazy(
2525
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
2526
'bzrlib.repofmt.pack_repo',
2527
'RepositoryFormatKnitPack5',
2529
format_registry.register_lazy(
2530
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
2531
'bzrlib.repofmt.pack_repo',
2532
'RepositoryFormatKnitPack5RichRoot',
2534
format_registry.register_lazy(
2535
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
2536
'bzrlib.repofmt.pack_repo',
2537
'RepositoryFormatKnitPack5RichRootBroken',
2539
format_registry.register_lazy(
2540
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
2541
'bzrlib.repofmt.pack_repo',
2542
'RepositoryFormatKnitPack6',
2544
format_registry.register_lazy(
2545
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
2546
'bzrlib.repofmt.pack_repo',
2547
'RepositoryFormatKnitPack6RichRoot',
2550
# Development formats.
2551
# 1.7->1.8 go below here
2552
format_registry.register_lazy(
2553
"Bazaar development format 2 (needs bzr.dev from before 1.8)\n",
2554
'bzrlib.repofmt.pack_repo',
2555
'RepositoryFormatPackDevelopment2',
2557
format_registry.register_lazy(
2558
("Bazaar development format 2 with subtree support "
2559
"(needs bzr.dev from before 1.8)\n"),
2560
'bzrlib.repofmt.pack_repo',
2561
'RepositoryFormatPackDevelopment2Subtree',
2565
class InterRepository(InterObject):
2566
"""This class represents operations taking place between two repositories.
2568
Its instances have methods like copy_content and fetch, and contain
2569
references to the source and target repositories these operations can be
2572
Often we will provide convenience methods on 'repository' which carry out
2573
operations with another repository - they will always forward to
2574
InterRepository.get(other).method_name(parameters).
2577
_walk_to_common_revisions_batch_size = 1
2579
"""The available optimised InterRepository types."""
2581
def __init__(self, source, target):
2582
InterObject.__init__(self, source, target)
2583
# These two attributes may be overridden by e.g. InterOtherToRemote to
2584
# provide a faster implementation.
2585
self.target_get_graph = self.target.get_graph
2586
self.target_get_parent_map = self.target.get_parent_map
2588
def copy_content(self, revision_id=None):
2589
raise NotImplementedError(self.copy_content)
2591
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2592
"""Fetch the content required to construct revision_id.
2594
The content is copied from self.source to self.target.
2596
:param revision_id: if None all content is copied, if NULL_REVISION no
2598
:param pb: optional progress bar to use for progress reports. If not
2599
provided a default one will be created.
2601
:returns: (copied_revision_count, failures).
2603
# Normally we should find a specific InterRepository subclass to do
2604
# the fetch; if nothing else then at least InterSameDataRepository.
2605
# If none of them is suitable it looks like fetching is not possible;
2606
# we try to give a good message why. _assert_same_model will probably
2607
# give a helpful message; otherwise a generic one.
2608
self._assert_same_model(self.source, self.target)
2609
raise errors.IncompatibleRepositories(self.source, self.target,
2610
"no suitableInterRepository found")
2612
def _walk_to_common_revisions(self, revision_ids):
2613
"""Walk out from revision_ids in source to revisions target has.
2615
:param revision_ids: The start point for the search.
2616
:return: A set of revision ids.
2618
target_graph = self.target_get_graph()
2619
revision_ids = frozenset(revision_ids)
2620
# Fast path for the case where all the revisions are already in the
2622
# (Although this does incur an extra round trip for the
2623
# fairly common case where the target doesn't already have the revision
2625
if set(target_graph.get_parent_map(revision_ids)) == revision_ids:
2626
return graph.SearchResult(revision_ids, set(), 0, set())
2627
missing_revs = set()
2628
source_graph = self.source.get_graph()
2629
# ensure we don't pay silly lookup costs.
2630
searcher = source_graph._make_breadth_first_searcher(revision_ids)
2631
null_set = frozenset([_mod_revision.NULL_REVISION])
2632
searcher_exhausted = False
2636
# Iterate the searcher until we have enough next_revs
2637
while len(next_revs) < self._walk_to_common_revisions_batch_size:
2639
next_revs_part, ghosts_part = searcher.next_with_ghosts()
2640
next_revs.update(next_revs_part)
2641
ghosts.update(ghosts_part)
2642
except StopIteration:
2643
searcher_exhausted = True
2645
# If there are ghosts in the source graph, and the caller asked for
2646
# them, make sure that they are present in the target.
2647
# We don't care about other ghosts as we can't fetch them and
2648
# haven't been asked to.
2649
ghosts_to_check = set(revision_ids.intersection(ghosts))
2650
revs_to_get = set(next_revs).union(ghosts_to_check)
2652
have_revs = set(target_graph.get_parent_map(revs_to_get))
2653
# we always have NULL_REVISION present.
2654
have_revs = have_revs.union(null_set)
2655
# Check if the target is missing any ghosts we need.
2656
ghosts_to_check.difference_update(have_revs)
2658
# One of the caller's revision_ids is a ghost in both the
2659
# source and the target.
2660
raise errors.NoSuchRevision(
2661
self.source, ghosts_to_check.pop())
2662
missing_revs.update(next_revs - have_revs)
2663
# Because we may have walked past the original stop point, make
2664
# sure everything is stopped
2665
stop_revs = searcher.find_seen_ancestors(have_revs)
2666
searcher.stop_searching_any(stop_revs)
2667
if searcher_exhausted:
2669
return searcher.get_result()
2671
@deprecated_method(one_two)
2673
def missing_revision_ids(self, revision_id=None, find_ghosts=True):
2674
"""Return the revision ids that source has that target does not.
2676
These are returned in topological order.
2678
:param revision_id: only return revision ids included by this
2680
:param find_ghosts: If True find missing revisions in deep history
2681
rather than just finding the surface difference.
2683
return list(self.search_missing_revision_ids(
2684
revision_id, find_ghosts).get_keys())
2687
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2688
"""Return the revision ids that source has that target does not.
2690
:param revision_id: only return revision ids included by this
2692
:param find_ghosts: If True find missing revisions in deep history
2693
rather than just finding the surface difference.
2694
:return: A bzrlib.graph.SearchResult.
2696
# stop searching at found target revisions.
2697
if not find_ghosts and revision_id is not None:
2698
return self._walk_to_common_revisions([revision_id])
2699
# generic, possibly worst case, slow code path.
2700
target_ids = set(self.target.all_revision_ids())
2701
if revision_id is not None:
2702
source_ids = self.source.get_ancestry(revision_id)
2703
if source_ids[0] is not None:
2704
raise AssertionError()
2707
source_ids = self.source.all_revision_ids()
2708
result_set = set(source_ids).difference(target_ids)
2709
return self.source.revision_ids_to_search_result(result_set)
2712
def _same_model(source, target):
2713
"""True if source and target have the same data representation.
2715
Note: this is always called on the base class; overriding it in a
2716
subclass will have no effect.
2719
InterRepository._assert_same_model(source, target)
2721
except errors.IncompatibleRepositories, e:
2725
def _assert_same_model(source, target):
2726
"""Raise an exception if two repositories do not use the same model.
2728
if source.supports_rich_root() != target.supports_rich_root():
2729
raise errors.IncompatibleRepositories(source, target,
2730
"different rich-root support")
2731
if source._serializer != target._serializer:
2732
raise errors.IncompatibleRepositories(source, target,
2733
"different serializers")
2736
class InterSameDataRepository(InterRepository):
2737
"""Code for converting between repositories that represent the same data.
2739
Data format and model must match for this to work.
2743
def _get_repo_format_to_test(self):
2744
"""Repository format for testing with.
2746
InterSameData can pull from subtree to subtree and from non-subtree to
2747
non-subtree, so we test this with the richest repository format.
2749
from bzrlib.repofmt import knitrepo
2750
return knitrepo.RepositoryFormatKnit3()
2753
def is_compatible(source, target):
2754
return InterRepository._same_model(source, target)
2757
def copy_content(self, revision_id=None):
2758
"""Make a complete copy of the content in self into destination.
2760
This copies both the repository's revision data, and configuration information
2761
such as the make_working_trees setting.
2763
This is a destructive operation! Do not use it on existing
2766
:param revision_id: Only copy the content needed to construct
2767
revision_id and its parents.
2770
self.target.set_make_working_trees(self.source.make_working_trees())
2771
except NotImplementedError:
2773
# but don't bother fetching if we have the needed data now.
2774
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2775
self.target.has_revision(revision_id)):
2777
self.target.fetch(self.source, revision_id=revision_id)
2780
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2781
"""See InterRepository.fetch()."""
2782
from bzrlib.fetch import RepoFetcher
2783
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2784
self.source, self.source._format, self.target,
2785
self.target._format)
2786
f = RepoFetcher(to_repository=self.target,
2787
from_repository=self.source,
2788
last_revision=revision_id,
2789
pb=pb, find_ghosts=find_ghosts)
2790
return f.count_copied, f.failed_revisions
2793
class InterWeaveRepo(InterSameDataRepository):
2794
"""Optimised code paths between Weave based repositories.
2796
This should be in bzrlib/repofmt/weaverepo.py but we have not yet
2797
implemented lazy inter-object optimisation.
2801
def _get_repo_format_to_test(self):
2802
from bzrlib.repofmt import weaverepo
2803
return weaverepo.RepositoryFormat7()
2806
def is_compatible(source, target):
2807
"""Be compatible with known Weave formats.
2809
We don't test for the stores being of specific types because that
2810
could lead to confusing results, and there is no need to be
2813
from bzrlib.repofmt.weaverepo import (
2819
return (isinstance(source._format, (RepositoryFormat5,
2821
RepositoryFormat7)) and
2822
isinstance(target._format, (RepositoryFormat5,
2824
RepositoryFormat7)))
2825
except AttributeError:
2829
def copy_content(self, revision_id=None):
2830
"""See InterRepository.copy_content()."""
2831
# weave specific optimised path:
2833
self.target.set_make_working_trees(self.source.make_working_trees())
2834
except (errors.RepositoryUpgradeRequired, NotImplemented):
2836
# FIXME do not peek!
2837
if self.source._transport.listable():
2838
pb = ui.ui_factory.nested_progress_bar()
2840
self.target.texts.insert_record_stream(
2841
self.source.texts.get_record_stream(
2842
self.source.texts.keys(), 'topological', False))
2843
pb.update('copying inventory', 0, 1)
2844
self.target.inventories.insert_record_stream(
2845
self.source.inventories.get_record_stream(
2846
self.source.inventories.keys(), 'topological', False))
2847
self.target.signatures.insert_record_stream(
2848
self.source.signatures.get_record_stream(
2849
self.source.signatures.keys(),
2851
self.target.revisions.insert_record_stream(
2852
self.source.revisions.get_record_stream(
2853
self.source.revisions.keys(),
2854
'topological', True))
2858
self.target.fetch(self.source, revision_id=revision_id)
2861
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2862
"""See InterRepository.fetch()."""
2863
from bzrlib.fetch import RepoFetcher
2864
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2865
self.source, self.source._format, self.target, self.target._format)
2866
f = RepoFetcher(to_repository=self.target,
2867
from_repository=self.source,
2868
last_revision=revision_id,
2869
pb=pb, find_ghosts=find_ghosts)
2870
return f.count_copied, f.failed_revisions
2873
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2874
"""See InterRepository.missing_revision_ids()."""
2875
# we want all revisions to satisfy revision_id in source.
2876
# but we don't want to stat every file here and there.
2877
# we want then, all revisions other needs to satisfy revision_id
2878
# checked, but not those that we have locally.
2879
# so the first thing is to get a subset of the revisions to
2880
# satisfy revision_id in source, and then eliminate those that
2881
# we do already have.
2882
# this is slow on high latency connection to self, but as as this
2883
# disk format scales terribly for push anyway due to rewriting
2884
# inventory.weave, this is considered acceptable.
2886
if revision_id is not None:
2887
source_ids = self.source.get_ancestry(revision_id)
2888
if source_ids[0] is not None:
2889
raise AssertionError()
2892
source_ids = self.source._all_possible_ids()
2893
source_ids_set = set(source_ids)
2894
# source_ids is the worst possible case we may need to pull.
2895
# now we want to filter source_ids against what we actually
2896
# have in target, but don't try to check for existence where we know
2897
# we do not have a revision as that would be pointless.
2898
target_ids = set(self.target._all_possible_ids())
2899
possibly_present_revisions = target_ids.intersection(source_ids_set)
2900
actually_present_revisions = set(
2901
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2902
required_revisions = source_ids_set.difference(actually_present_revisions)
2903
if revision_id is not None:
2904
# we used get_ancestry to determine source_ids then we are assured all
2905
# revisions referenced are present as they are installed in topological order.
2906
# and the tip revision was validated by get_ancestry.
2907
result_set = required_revisions
2909
# if we just grabbed the possibly available ids, then
2910
# we only have an estimate of whats available and need to validate
2911
# that against the revision records.
2913
self.source._eliminate_revisions_not_present(required_revisions))
2914
return self.source.revision_ids_to_search_result(result_set)
2917
class InterKnitRepo(InterSameDataRepository):
2918
"""Optimised code paths between Knit based repositories."""
2921
def _get_repo_format_to_test(self):
2922
from bzrlib.repofmt import knitrepo
2923
return knitrepo.RepositoryFormatKnit1()
2926
def is_compatible(source, target):
2927
"""Be compatible with known Knit formats.
2929
We don't test for the stores being of specific types because that
2930
could lead to confusing results, and there is no need to be
2933
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
2935
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
2936
isinstance(target._format, RepositoryFormatKnit))
2937
except AttributeError:
2939
return are_knits and InterRepository._same_model(source, target)
2942
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2943
"""See InterRepository.fetch()."""
2944
from bzrlib.fetch import RepoFetcher
2945
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2946
self.source, self.source._format, self.target, self.target._format)
2947
f = RepoFetcher(to_repository=self.target,
2948
from_repository=self.source,
2949
last_revision=revision_id,
2950
pb=pb, find_ghosts=find_ghosts)
2951
return f.count_copied, f.failed_revisions
2954
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2955
"""See InterRepository.missing_revision_ids()."""
2956
if revision_id is not None:
2957
source_ids = self.source.get_ancestry(revision_id)
2958
if source_ids[0] is not None:
2959
raise AssertionError()
2962
source_ids = self.source.all_revision_ids()
2963
source_ids_set = set(source_ids)
2964
# source_ids is the worst possible case we may need to pull.
2965
# now we want to filter source_ids against what we actually
2966
# have in target, but don't try to check for existence where we know
2967
# we do not have a revision as that would be pointless.
2968
target_ids = set(self.target.all_revision_ids())
2969
possibly_present_revisions = target_ids.intersection(source_ids_set)
2970
actually_present_revisions = set(
2971
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2972
required_revisions = source_ids_set.difference(actually_present_revisions)
2973
if revision_id is not None:
2974
# we used get_ancestry to determine source_ids then we are assured all
2975
# revisions referenced are present as they are installed in topological order.
2976
# and the tip revision was validated by get_ancestry.
2977
result_set = required_revisions
2979
# if we just grabbed the possibly available ids, then
2980
# we only have an estimate of whats available and need to validate
2981
# that against the revision records.
2983
self.source._eliminate_revisions_not_present(required_revisions))
2984
return self.source.revision_ids_to_search_result(result_set)
2987
class InterPackRepo(InterSameDataRepository):
2988
"""Optimised code paths between Pack based repositories."""
2991
def _get_repo_format_to_test(self):
2992
from bzrlib.repofmt import pack_repo
2993
return pack_repo.RepositoryFormatKnitPack1()
2996
def is_compatible(source, target):
2997
"""Be compatible with known Pack formats.
2999
We don't test for the stores being of specific types because that
3000
could lead to confusing results, and there is no need to be
3003
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
3005
are_packs = (isinstance(source._format, RepositoryFormatPack) and
3006
isinstance(target._format, RepositoryFormatPack))
3007
except AttributeError:
3009
return are_packs and InterRepository._same_model(source, target)
3012
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3013
"""See InterRepository.fetch()."""
3014
if (len(self.source._fallback_repositories) > 0 or
3015
len(self.target._fallback_repositories) > 0):
3016
# The pack layer is not aware of fallback repositories, so when
3017
# fetching from a stacked repository or into a stacked repository
3018
# we use the generic fetch logic which uses the VersionedFiles
3019
# attributes on repository.
3020
from bzrlib.fetch import RepoFetcher
3021
fetcher = RepoFetcher(self.target, self.source, revision_id,
3023
return fetcher.count_copied, fetcher.failed_revisions
3024
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
3025
self.source, self.source._format, self.target, self.target._format)
3026
self.count_copied = 0
3027
if revision_id is None:
3029
# everything to do - use pack logic
3030
# to fetch from all packs to one without
3031
# inventory parsing etc, IFF nothing to be copied is in the target.
3033
source_revision_ids = frozenset(self.source.all_revision_ids())
3034
revision_ids = source_revision_ids - \
3035
frozenset(self.target_get_parent_map(source_revision_ids))
3036
revision_keys = [(revid,) for revid in revision_ids]
3037
target_pack_collection = self._get_target_pack_collection()
3038
index = target_pack_collection.revision_index.combined_index
3039
present_revision_ids = set(item[1][0] for item in
3040
index.iter_entries(revision_keys))
3041
revision_ids = set(revision_ids) - present_revision_ids
3042
# implementing the TODO will involve:
3043
# - detecting when all of a pack is selected
3044
# - avoiding as much as possible pre-selection, so the
3045
# more-core routines such as create_pack_from_packs can filter in
3046
# a just-in-time fashion. (though having a HEADS list on a
3047
# repository might make this a lot easier, because we could
3048
# sensibly detect 'new revisions' without doing a full index scan.
3049
elif _mod_revision.is_null(revision_id):
3054
revision_ids = self.search_missing_revision_ids(revision_id,
3055
find_ghosts=find_ghosts).get_keys()
3056
except errors.NoSuchRevision:
3057
raise errors.InstallFailed([revision_id])
3058
if len(revision_ids) == 0:
3060
return self._pack(self.source, self.target, revision_ids)
3062
def _pack(self, source, target, revision_ids):
3063
from bzrlib.repofmt.pack_repo import Packer
3064
target_pack_collection = self._get_target_pack_collection()
3065
packs = source._pack_collection.all_packs()
3066
pack = Packer(target_pack_collection, packs, '.fetch',
3067
revision_ids).pack()
3068
if pack is not None:
3069
target_pack_collection._save_pack_names()
3070
copied_revs = pack.get_revision_count()
3071
# Trigger an autopack. This may duplicate effort as we've just done
3072
# a pack creation, but for now it is simpler to think about as
3073
# 'upload data, then repack if needed'.
3075
return (copied_revs, [])
3079
def _autopack(self):
3080
self.target._pack_collection.autopack()
3082
def _get_target_pack_collection(self):
3083
return self.target._pack_collection
3086
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
3087
"""See InterRepository.missing_revision_ids().
3089
:param find_ghosts: Find ghosts throughout the ancestry of
3092
if not find_ghosts and revision_id is not None:
3093
return self._walk_to_common_revisions([revision_id])
3094
elif revision_id is not None:
3095
# Find ghosts: search for revisions pointing from one repository to
3096
# the other, and vice versa, anywhere in the history of revision_id.
3097
graph = self.target_get_graph(other_repository=self.source)
3098
searcher = graph._make_breadth_first_searcher([revision_id])
3102
next_revs, ghosts = searcher.next_with_ghosts()
3103
except StopIteration:
3105
if revision_id in ghosts:
3106
raise errors.NoSuchRevision(self.source, revision_id)
3107
found_ids.update(next_revs)
3108
found_ids.update(ghosts)
3109
found_ids = frozenset(found_ids)
3110
# Double query here: should be able to avoid this by changing the
3111
# graph api further.
3112
result_set = found_ids - frozenset(
3113
self.target_get_parent_map(found_ids))
3115
source_ids = self.source.all_revision_ids()
3116
# source_ids is the worst possible case we may need to pull.
3117
# now we want to filter source_ids against what we actually
3118
# have in target, but don't try to check for existence where we know
3119
# we do not have a revision as that would be pointless.
3120
target_ids = set(self.target.all_revision_ids())
3121
result_set = set(source_ids).difference(target_ids)
3122
return self.source.revision_ids_to_search_result(result_set)
3125
class InterModel1and2(InterRepository):
3128
def _get_repo_format_to_test(self):
3132
def is_compatible(source, target):
3133
if not source.supports_rich_root() and target.supports_rich_root():
3139
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3140
"""See InterRepository.fetch()."""
3141
from bzrlib.fetch import Model1toKnit2Fetcher
3142
f = Model1toKnit2Fetcher(to_repository=self.target,
3143
from_repository=self.source,
3144
last_revision=revision_id,
3145
pb=pb, find_ghosts=find_ghosts)
3146
return f.count_copied, f.failed_revisions
3149
def copy_content(self, revision_id=None):
3150
"""Make a complete copy of the content in self into destination.
3152
This is a destructive operation! Do not use it on existing
3155
:param revision_id: Only copy the content needed to construct
3156
revision_id and its parents.
3159
self.target.set_make_working_trees(self.source.make_working_trees())
3160
except NotImplementedError:
3162
# but don't bother fetching if we have the needed data now.
3163
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
3164
self.target.has_revision(revision_id)):
3166
self.target.fetch(self.source, revision_id=revision_id)
3169
class InterKnit1and2(InterKnitRepo):
3172
def _get_repo_format_to_test(self):
3176
def is_compatible(source, target):
3177
"""Be compatible with Knit1 source and Knit3 target"""
3179
from bzrlib.repofmt.knitrepo import (
3180
RepositoryFormatKnit1,
3181
RepositoryFormatKnit3,
3183
from bzrlib.repofmt.pack_repo import (
3184
RepositoryFormatKnitPack1,
3185
RepositoryFormatKnitPack3,
3186
RepositoryFormatKnitPack4,
3187
RepositoryFormatKnitPack5,
3188
RepositoryFormatKnitPack5RichRoot,
3189
RepositoryFormatKnitPack6,
3190
RepositoryFormatKnitPack6RichRoot,
3191
RepositoryFormatPackDevelopment2,
3192
RepositoryFormatPackDevelopment2Subtree,
3195
RepositoryFormatKnit1, # no rr, no subtree
3196
RepositoryFormatKnitPack1, # no rr, no subtree
3197
RepositoryFormatPackDevelopment2, # no rr, no subtree
3198
RepositoryFormatKnitPack5, # no rr, no subtree
3199
RepositoryFormatKnitPack6, # no rr, no subtree
3202
RepositoryFormatKnit3, # rr, subtree
3203
RepositoryFormatKnitPack3, # rr, subtree
3204
RepositoryFormatKnitPack4, # rr, no subtree
3205
RepositoryFormatKnitPack5RichRoot,# rr, no subtree
3206
RepositoryFormatKnitPack6RichRoot,# rr, no subtree
3207
RepositoryFormatPackDevelopment2Subtree, # rr, subtree
3209
for format in norichroot:
3210
if format.rich_root_data:
3211
raise AssertionError('Format %s is a rich-root format'
3212
' but is included in the non-rich-root list'
3214
for format in richroot:
3215
if not format.rich_root_data:
3216
raise AssertionError('Format %s is not a rich-root format'
3217
' but is included in the rich-root list'
3219
# TODO: One alternative is to just check format.rich_root_data,
3220
# instead of keeping membership lists. However, the formats
3221
# *also* have to use the same 'Knit' style of storage
3222
# (line-deltas, fulltexts, etc.)
3223
return (isinstance(source._format, norichroot) and
3224
isinstance(target._format, richroot))
3225
except AttributeError:
3229
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3230
"""See InterRepository.fetch()."""
3231
from bzrlib.fetch import Knit1to2Fetcher
3232
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
3233
self.source, self.source._format, self.target,
3234
self.target._format)
3235
f = Knit1to2Fetcher(to_repository=self.target,
3236
from_repository=self.source,
3237
last_revision=revision_id,
3238
pb=pb, find_ghosts=find_ghosts)
3239
return f.count_copied, f.failed_revisions
3242
class InterDifferingSerializer(InterKnitRepo):
3245
def _get_repo_format_to_test(self):
3249
def is_compatible(source, target):
3250
"""Be compatible with Knit2 source and Knit3 target"""
3251
if source.supports_rich_root() != target.supports_rich_root():
3253
# Ideally, we'd support fetching if the source had no tree references
3254
# even if it supported them...
3255
if (getattr(source, '_format.supports_tree_reference', False) and
3256
not getattr(target, '_format.supports_tree_reference', False)):
3260
def _fetch_batch(self, revision_ids, basis_id, basis_tree):
3261
"""Fetch across a few revisions.
3263
:param revision_ids: The revisions to copy
3264
:param basis_id: The revision_id of basis_tree
3265
:param basis_tree: A tree that is not in revision_ids which should
3266
already exist in the target.
3267
:return: (basis_id, basis_tree) A new basis to use now that these trees
3270
# Walk though all revisions; get inventory deltas, copy referenced
3271
# texts that delta references, insert the delta, revision and
3275
pending_revisions = []
3276
for tree in self.source.revision_trees(revision_ids):
3277
current_revision_id = tree.get_revision_id()
3278
delta = tree.inventory._make_delta(basis_tree.inventory)
3279
for old_path, new_path, file_id, entry in delta:
3280
if new_path is not None:
3281
if not (new_path or self.target.supports_rich_root()):
3282
# We leave the inventory delta in, because that
3283
# will have the deserialised inventory root
3287
# "if entry.revision == current_revision_id" ?
3288
if entry.revision == current_revision_id:
3289
text_keys.add((file_id, entry.revision))
3290
revision = self.source.get_revision(current_revision_id)
3291
pending_deltas.append((basis_id, delta,
3292
current_revision_id, revision.parent_ids))
3293
pending_revisions.append(revision)
3294
basis_id = current_revision_id
3297
from_texts = self.source.texts
3298
to_texts = self.target.texts
3299
to_texts.insert_record_stream(from_texts.get_record_stream(
3300
text_keys, self.target._fetch_order,
3301
not self.target._fetch_uses_deltas))
3303
for delta in pending_deltas:
3304
self.target.add_inventory_by_delta(*delta)
3305
# insert signatures and revisions
3306
for revision in pending_revisions:
3308
signature = self.source.get_signature_text(
3309
revision.revision_id)
3310
self.target.add_signature_text(revision.revision_id,
3312
except errors.NoSuchRevision:
3314
self.target.add_revision(revision.revision_id, revision)
3315
return basis_id, basis_tree
3317
def _fetch_all_revisions(self, revision_ids, pb):
3318
"""Fetch everything for the list of revisions.
3320
:param revision_ids: The list of revisions to fetch. Must be in
3322
:param pb: A ProgressBar
3325
basis_id, basis_tree = self._get_basis(revision_ids[0])
3327
for offset in range(0, len(revision_ids), batch_size):
3328
self.target.start_write_group()
3330
pb.update('Transferring revisions', offset,
3332
batch = revision_ids[offset:offset+batch_size]
3333
basis_id, basis_tree = self._fetch_batch(batch,
3334
basis_id, basis_tree)
3336
self.target.abort_write_group()
3339
self.target.commit_write_group()
3340
pb.update('Transferring revisions', len(revision_ids),
3344
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3345
"""See InterRepository.fetch()."""
3346
revision_ids = self.target.search_missing_revision_ids(self.source,
3347
revision_id, find_ghosts=find_ghosts).get_keys()
3348
if not revision_ids:
3350
revision_ids = tsort.topo_sort(
3351
self.source.get_graph().get_parent_map(revision_ids))
3353
my_pb = ui.ui_factory.nested_progress_bar()
3358
self._fetch_all_revisions(revision_ids, pb)
3360
if my_pb is not None:
3362
return len(revision_ids), 0
3364
def _get_basis(self, first_revision_id):
3365
"""Get a revision and tree which exists in the target.
3367
This assumes that first_revision_id is selected for transmission
3368
because all other ancestors are already present. If we can't find an
3369
ancestor we fall back to NULL_REVISION since we know that is safe.
3371
:return: (basis_id, basis_tree)
3373
first_rev = self.source.get_revision(first_revision_id)
3375
basis_id = first_rev.parent_ids[0]
3376
# only valid as a basis if the target has it
3377
self.target.get_revision(basis_id)
3378
# Try to get a basis tree - if its a ghost it will hit the
3379
# NoSuchRevision case.
3380
basis_tree = self.source.revision_tree(basis_id)
3381
except (IndexError, errors.NoSuchRevision):
3382
basis_id = _mod_revision.NULL_REVISION
3383
basis_tree = self.source.revision_tree(basis_id)
3384
return basis_id, basis_tree
3387
class InterOtherToRemote(InterRepository):
3388
"""An InterRepository that simply delegates to the 'real' InterRepository
3389
calculated for (source, target._real_repository).
3392
_walk_to_common_revisions_batch_size = 50
3394
def __init__(self, source, target):
3395
InterRepository.__init__(self, source, target)
3396
self._real_inter = None
3399
def is_compatible(source, target):
3400
if isinstance(target, remote.RemoteRepository):
3404
def _ensure_real_inter(self):
3405
if self._real_inter is None:
3406
self.target._ensure_real()
3407
real_target = self.target._real_repository
3408
self._real_inter = InterRepository.get(self.source, real_target)
3409
# Make _real_inter use the RemoteRepository for get_parent_map
3410
self._real_inter.target_get_graph = self.target.get_graph
3411
self._real_inter.target_get_parent_map = self.target.get_parent_map
3413
def copy_content(self, revision_id=None):
3414
self._ensure_real_inter()
3415
self._real_inter.copy_content(revision_id=revision_id)
3417
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3418
self._ensure_real_inter()
3419
return self._real_inter.fetch(revision_id=revision_id, pb=pb,
3420
find_ghosts=find_ghosts)
3423
def _get_repo_format_to_test(self):
3427
class InterRemoteToOther(InterRepository):
3429
def __init__(self, source, target):
3430
InterRepository.__init__(self, source, target)
3431
self._real_inter = None
3434
def is_compatible(source, target):
3435
if not isinstance(source, remote.RemoteRepository):
3437
# Is source's model compatible with target's model?
3438
source._ensure_real()
3439
real_source = source._real_repository
3440
if isinstance(real_source, remote.RemoteRepository):
3441
raise NotImplementedError(
3442
"We don't support remote repos backed by remote repos yet.")
3443
return InterRepository._same_model(real_source, target)
3445
def _ensure_real_inter(self):
3446
if self._real_inter is None:
3447
self.source._ensure_real()
3448
real_source = self.source._real_repository
3449
self._real_inter = InterRepository.get(real_source, self.target)
3451
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3452
self._ensure_real_inter()
3453
return self._real_inter.fetch(revision_id=revision_id, pb=pb,
3454
find_ghosts=find_ghosts)
3456
def copy_content(self, revision_id=None):
3457
self._ensure_real_inter()
3458
self._real_inter.copy_content(revision_id=revision_id)
3461
def _get_repo_format_to_test(self):
3466
class InterPackToRemotePack(InterPackRepo):
3467
"""A specialisation of InterPackRepo for a target that is a
3470
This will use the get_parent_map RPC rather than plain readvs, and also
3471
uses an RPC for autopacking.
3474
_walk_to_common_revisions_batch_size = 50
3477
def is_compatible(source, target):
3478
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
3479
if isinstance(source._format, RepositoryFormatPack):
3480
if isinstance(target, remote.RemoteRepository):
3481
target._ensure_real()
3482
if isinstance(target._real_repository._format,
3483
RepositoryFormatPack):
3484
if InterRepository._same_model(source, target):
3488
def _autopack(self):
3489
self.target.autopack()
3492
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3493
"""See InterRepository.fetch()."""
3494
# Always fetch using the generic streaming fetch code, to allow
3495
# streaming fetching into remote servers.
3496
from bzrlib.fetch import RepoFetcher
3497
fetcher = RepoFetcher(self.target, self.source, revision_id,
3499
return fetcher.count_copied, fetcher.failed_revisions
3501
def _get_target_pack_collection(self):
3502
return self.target._real_repository._pack_collection
3505
def _get_repo_format_to_test(self):
3509
InterRepository.register_optimiser(InterDifferingSerializer)
3510
InterRepository.register_optimiser(InterSameDataRepository)
3511
InterRepository.register_optimiser(InterWeaveRepo)
3512
InterRepository.register_optimiser(InterKnitRepo)
3513
InterRepository.register_optimiser(InterModel1and2)
3514
InterRepository.register_optimiser(InterKnit1and2)
3515
InterRepository.register_optimiser(InterPackRepo)
3516
InterRepository.register_optimiser(InterOtherToRemote)
3517
InterRepository.register_optimiser(InterRemoteToOther)
3518
InterRepository.register_optimiser(InterPackToRemotePack)
3521
class CopyConverter(object):
3522
"""A repository conversion tool which just performs a copy of the content.
3524
This is slow but quite reliable.
3527
def __init__(self, target_format):
3528
"""Create a CopyConverter.
3530
:param target_format: The format the resulting repository should be.
3532
self.target_format = target_format
3534
def convert(self, repo, pb):
3535
"""Perform the conversion of to_convert, giving feedback via pb.
3537
:param to_convert: The disk object to convert.
3538
:param pb: a progress bar to use for progress information.
3543
# this is only useful with metadir layouts - separated repo content.
3544
# trigger an assertion if not such
3545
repo._format.get_format_string()
3546
self.repo_dir = repo.bzrdir
3547
self.step('Moving repository to repository.backup')
3548
self.repo_dir.transport.move('repository', 'repository.backup')
3549
backup_transport = self.repo_dir.transport.clone('repository.backup')
3550
repo._format.check_conversion_target(self.target_format)
3551
self.source_repo = repo._format.open(self.repo_dir,
3553
_override_transport=backup_transport)
3554
self.step('Creating new repository')
3555
converted = self.target_format.initialize(self.repo_dir,
3556
self.source_repo.is_shared())
3557
converted.lock_write()
3559
self.step('Copying content into repository.')
3560
self.source_repo.copy_content_into(converted)
3563
self.step('Deleting old repository content.')
3564
self.repo_dir.transport.delete_tree('repository.backup')
3565
self.pb.note('repository converted')
3567
def step(self, message):
3568
"""Update the pb by a step."""
3570
self.pb.update(message, self.count, self.total)
3582
def _unescaper(match, _map=_unescape_map):
3583
code = match.group(1)
3587
if not code.startswith('#'):
3589
return unichr(int(code[1:])).encode('utf8')
3595
def _unescape_xml(data):
3596
"""Unescape predefined XML entities in a string of data."""
3598
if _unescape_re is None:
3599
_unescape_re = re.compile('\&([^;]*);')
3600
return _unescape_re.sub(_unescaper, data)
3603
class _VersionedFileChecker(object):
3605
def __init__(self, repository):
3606
self.repository = repository
3607
self.text_index = self.repository._generate_text_key_index()
3609
def calculate_file_version_parents(self, text_key):
3610
"""Calculate the correct parents for a file version according to
3613
parent_keys = self.text_index[text_key]
3614
if parent_keys == [_mod_revision.NULL_REVISION]:
3616
return tuple(parent_keys)
3618
def check_file_version_parents(self, texts, progress_bar=None):
3619
"""Check the parents stored in a versioned file are correct.
3621
It also detects file versions that are not referenced by their
3622
corresponding revision's inventory.
3624
:returns: A tuple of (wrong_parents, dangling_file_versions).
3625
wrong_parents is a dict mapping {revision_id: (stored_parents,
3626
correct_parents)} for each revision_id where the stored parents
3627
are not correct. dangling_file_versions is a set of (file_id,
3628
revision_id) tuples for versions that are present in this versioned
3629
file, but not used by the corresponding inventory.
3632
self.file_ids = set([file_id for file_id, _ in
3633
self.text_index.iterkeys()])
3634
# text keys is now grouped by file_id
3635
n_weaves = len(self.file_ids)
3636
files_in_revisions = {}
3637
revisions_of_files = {}
3638
n_versions = len(self.text_index)
3639
progress_bar.update('loading text store', 0, n_versions)
3640
parent_map = self.repository.texts.get_parent_map(self.text_index)
3641
# On unlistable transports this could well be empty/error...
3642
text_keys = self.repository.texts.keys()
3643
unused_keys = frozenset(text_keys) - set(self.text_index)
3644
for num, key in enumerate(self.text_index.iterkeys()):
3645
if progress_bar is not None:
3646
progress_bar.update('checking text graph', num, n_versions)
3647
correct_parents = self.calculate_file_version_parents(key)
3649
knit_parents = parent_map[key]
3650
except errors.RevisionNotPresent:
3653
if correct_parents != knit_parents:
3654
wrong_parents[key] = (knit_parents, correct_parents)
3655
return wrong_parents, unused_keys
3658
def _old_get_graph(repository, revision_id):
3659
"""DO NOT USE. That is all. I'm serious."""
3660
graph = repository.get_graph()
3661
revision_graph = dict(((key, value) for key, value in
3662
graph.iter_ancestry([revision_id]) if value is not None))
3663
return _strip_NULL_ghosts(revision_graph)
3666
def _strip_NULL_ghosts(revision_graph):
3667
"""Also don't use this. more compatibility code for unmigrated clients."""
3668
# Filter ghosts, and null:
3669
if _mod_revision.NULL_REVISION in revision_graph:
3670
del revision_graph[_mod_revision.NULL_REVISION]
3671
for key, parents in revision_graph.items():
3672
revision_graph[key] = tuple(parent for parent in parents if parent
3674
return revision_graph
3677
class StreamSink(object):
3678
"""An object that can insert a stream into a repository.
3680
This interface handles the complexity of reserialising inventories and
3681
revisions from different formats, and allows unidirectional insertion into
3682
stacked repositories without looking for the missing basis parents
3686
def __init__(self, target_repo):
3687
self.target_repo = target_repo
3689
def insert_stream(self, stream, src_format):
3690
"""Insert a stream's content into the target repository.
3692
:param src_format: a bzr repository format.
3694
:return: an iterable of keys additional items required before the
3695
insertion can be completed.
3698
to_serializer = self.target_repo._format._serializer
3699
src_serializer = src_format._serializer
3700
for substream_type, substream in stream:
3701
if substream_type == 'texts':
3702
self.target_repo.texts.insert_record_stream(substream)
3703
elif substream_type == 'inventories':
3704
if src_serializer == to_serializer:
3705
self.target_repo.inventories.insert_record_stream(
3708
self._extract_and_insert_inventories(
3709
substream, src_serializer)
3710
elif substream_type == 'revisions':
3711
# This may fallback to extract-and-insert more often than
3712
# required if the serializers are different only in terms of
3714
if src_serializer == to_serializer:
3715
self.target_repo.revisions.insert_record_stream(
3718
self._extract_and_insert_revisions(substream,
3720
elif substream_type == 'signatures':
3721
self.target_repo.signatures.insert_record_stream(substream)
3723
raise AssertionError('kaboom! %s' % (substream_type,))
3726
def _extract_and_insert_inventories(self, substream, serializer):
3727
"""Generate a new inventory versionedfile in target, converting data.
3729
The inventory is retrieved from the source, (deserializing it), and
3730
stored in the target (reserializing it in a different format).
3732
for record in substream:
3733
bytes = record.get_bytes_as('fulltext')
3734
revision_id = record.key[0]
3735
inv = serializer.read_inventory_from_string(bytes, revision_id)
3736
parents = [key[0] for key in record.parents]
3737
self.target_repo.add_inventory(revision_id, inv, parents)
3739
def _extract_and_insert_revisions(self, substream, serializer):
3740
for record in substream:
3741
bytes = record.get_bytes_as('fulltext')
3742
revision_id = record.key[0]
3743
rev = serializer.read_revision_from_string(bytes)
3744
if rev.revision_id != revision_id:
3745
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
3746
self.target_repo.add_revision(revision_id, rev)
3749
if self.target_repo._fetch_reconcile:
3750
self.target_repo.reconcile()
added
removed
bzrlib/repository.py
