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# Copyright (C) 2005, 2006, 2007 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 cStringIO import StringIO
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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.store.text import TextStore
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from bzrlib.testament import Testament
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from bzrlib.util import bencode
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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 mutter, mutter_callsite, note, 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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assert isinstance(committer, basestring), type(committer)
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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._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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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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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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DeprecationWarning, stacklevel=2)
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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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return (None, path, ie.file_id, ie)
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elif ie != basis_inv[ie.file_id]:
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# TODO: avoid tis id2path call.
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return (basis_inv.id2path(ie.file_id), path, ie.file_id, ie)
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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). change_delta is
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an inventory_delta change for this entry against the basis tree of
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the commit, or None if no change occured against the basis tree.
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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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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, and
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# this masks when a change may have occurred against the basis,
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# so calculate if one happened.
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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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# 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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return None, (ie.revision == self._new_revision_id)
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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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assert content_summary[2] is not None, \
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"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
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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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lines = tree.get_file(ie.file_id, path).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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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
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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
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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
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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
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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
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def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
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versionedfile = self.repository.weave_store.get_weave_or_empty(
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file_id, self.repository.get_transaction())
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# Don't change this to add_lines - add_lines_with_ghosts is cheaper
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# than add_lines, and allows committing when a parent is ghosted for
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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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return versionedfile.add_lines_with_ghosts(
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self._new_revision_id, parents, 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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versionedfile.clear_cache()
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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 Stores and a Transport, which respectively
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describe the disk data format and the way of accessing the (possibly
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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):
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"""Commit the contents accrued within the current write group.
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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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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_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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assert self.is_in_write_group()
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_mod_revision.check_not_reserved_id(revision_id)
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assert inv.revision_id is None or inv.revision_id == revision_id, \
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"Mismatch between inventory revision" \
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" id and insertion revid (%r, %r)" % (inv.revision_id, revision_id)
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assert inv.root is not None
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inv_lines = self._serialise_inventory_to_lines(inv)
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inv_vf = self.get_inventory_weave()
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return self._inventory_add_lines(inv_vf, revision_id, parents,
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inv_lines, check_content=False)
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def _inventory_add_lines(self, inv_vf, revision_id, parents, lines,
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"""Store lines in inv_vf and return the sha1 of the inventory."""
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for parent in parents:
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final_parents.append(parent)
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return inv_vf.add_lines(revision_id, final_parents, lines,
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check_content=check_content)[0]
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def add_revision(self, revision_id, rev, inv=None, config=None):
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"""Add rev to the revision store as revision_id.
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:param revision_id: the revision id to use.
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:param rev: The revision object.
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:param inv: The inventory for the revision. if None, it will be looked
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up in the inventory storer
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:param config: If None no digital signature will be created.
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If supplied its signature_needed method will be used
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to determine if a signature should be made.
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# TODO: jam 20070210 Shouldn't we check rev.revision_id and
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_mod_revision.check_not_reserved_id(revision_id)
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if config is not None and config.signature_needed():
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inv = self.get_inventory(revision_id)
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plaintext = Testament(rev, inv).as_short_text()
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self.store_revision_signature(
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gpg.GPGStrategy(config), plaintext, revision_id)
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if not revision_id in self.get_inventory_weave():
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raise errors.WeaveRevisionNotPresent(revision_id,
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self.get_inventory_weave())
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# yes, this is not suitable for adding with ghosts.
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self.add_inventory(revision_id, inv, rev.parent_ids)
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self._revision_store.add_revision(rev, self.get_transaction())
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def _add_revision_text(self, revision_id, text):
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revision = self._revision_store._serializer.read_revision_from_string(
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self._revision_store._add_revision(revision, StringIO(text),
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self.get_transaction())
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def all_revision_ids(self):
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"""Returns a list of all the revision ids in the repository.
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This is deprecated because code should generally work on the graph
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reachable from a particular revision, and ignore any other revisions
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that might be present. There is no direct replacement method.
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if 'evil' in debug.debug_flags:
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mutter_callsite(2, "all_revision_ids is linear with history.")
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return self._all_revision_ids()
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def _all_revision_ids(self):
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"""Returns a list of all the revision ids in the repository.
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These are in as much topological order as the underlying store can
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raise NotImplementedError(self._all_revision_ids)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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self.control_files.break_lock()
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def _eliminate_revisions_not_present(self, revision_ids):
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"""Check every revision id in revision_ids to see if we have it.
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Returns a set of the present revisions.
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for id in revision_ids:
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if self.has_revision(id):
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def create(a_bzrdir):
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"""Construct the current default format repository in a_bzrdir."""
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return RepositoryFormat.get_default_format().initialize(a_bzrdir)
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def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
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"""instantiate a Repository.
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:param _format: The format of the repository on disk.
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:param a_bzrdir: The BzrDir of the repository.
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In the future we will have a single api for all stores for
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getting file texts, inventories and revisions, then
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this construct will accept instances of those things.
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super(Repository, self).__init__()
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self._format = _format
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# the following are part of the public API for Repository:
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self.bzrdir = a_bzrdir
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self.control_files = control_files
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self._revision_store = _revision_store
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# backwards compatibility
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self.weave_store = text_store
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self._reconcile_does_inventory_gc = True
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self._reconcile_fixes_text_parents = False
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self._reconcile_backsup_inventory = True
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# not right yet - should be more semantically clear ?
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self.control_store = control_store
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self.control_weaves = control_store
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# TODO: make sure to construct the right store classes, etc, depending
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# on whether escaping is required.
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self._warn_if_deprecated()
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self._write_group = None
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self.base = control_files._transport.base
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return '%s(%r)' % (self.__class__.__name__,
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def has_same_location(self, other):
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"""Returns a boolean indicating if this repository is at the same
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location as another repository.
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This might return False even when two repository objects are accessing
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the same physical repository via different URLs.
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if self.__class__ is not other.__class__:
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return (self.control_files._transport.base ==
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other.control_files._transport.base)
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def is_in_write_group(self):
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"""Return True if there is an open write group.
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:seealso: start_write_group.
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return self._write_group is not None
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return self.control_files.is_locked()
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def is_write_locked(self):
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"""Return True if this object is write locked."""
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return self.is_locked() and self.control_files._lock_mode == 'w'
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def lock_write(self, token=None):
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"""Lock this repository for writing.
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This causes caching within the repository obejct to start accumlating
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data during reads, and allows a 'write_group' to be obtained. Write
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groups must be used for actual data insertion.
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:param token: if this is already locked, then lock_write will fail
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unless the token matches the existing lock.
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:returns: a token if this instance supports tokens, otherwise None.
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:raises TokenLockingNotSupported: when a token is given but this
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instance doesn't support using token locks.
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:raises MismatchedToken: if the specified token doesn't match the token
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of the existing lock.
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:seealso: start_write_group.
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A token should be passed in if you know that you have locked the object
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some other way, and need to synchronise this object's state with that
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XXX: this docstring is duplicated in many places, e.g. lockable_files.py
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result = self.control_files.lock_write(token=token)
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self.control_files.lock_read()
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def get_physical_lock_status(self):
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return self.control_files.get_physical_lock_status()
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def leave_lock_in_place(self):
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"""Tell this repository not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this repository to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not supported.
716
self.control_files.dont_leave_in_place()
719
def gather_stats(self, revid=None, committers=None):
720
"""Gather statistics from a revision id.
722
:param revid: The revision id to gather statistics from, if None, then
723
no revision specific statistics are gathered.
724
:param committers: Optional parameter controlling whether to grab
725
a count of committers from the revision specific statistics.
726
:return: A dictionary of statistics. Currently this contains:
727
committers: The number of committers if requested.
728
firstrev: A tuple with timestamp, timezone for the penultimate left
729
most ancestor of revid, if revid is not the NULL_REVISION.
730
latestrev: A tuple with timestamp, timezone for revid, if revid is
731
not the NULL_REVISION.
732
revisions: The total revision count in the repository.
733
size: An estimate disk size of the repository in bytes.
736
if revid and committers:
737
result['committers'] = 0
738
if revid and revid != _mod_revision.NULL_REVISION:
740
all_committers = set()
741
revisions = self.get_ancestry(revid)
742
# pop the leading None
744
first_revision = None
746
# ignore the revisions in the middle - just grab first and last
747
revisions = revisions[0], revisions[-1]
748
for revision in self.get_revisions(revisions):
749
if not first_revision:
750
first_revision = revision
752
all_committers.add(revision.committer)
753
last_revision = revision
755
result['committers'] = len(all_committers)
756
result['firstrev'] = (first_revision.timestamp,
757
first_revision.timezone)
758
result['latestrev'] = (last_revision.timestamp,
759
last_revision.timezone)
761
# now gather global repository information
762
if self.bzrdir.root_transport.listable():
763
c, t = self._revision_store.total_size(self.get_transaction())
764
result['revisions'] = c
768
def find_branches(self, using=False):
769
"""Find branches underneath this repository.
771
This will include branches inside other branches.
773
:param using: If True, list only branches using this repository.
775
if using and not self.is_shared():
777
return [self.bzrdir.open_branch()]
778
except errors.NotBranchError:
780
class Evaluator(object):
783
self.first_call = True
785
def __call__(self, bzrdir):
786
# On the first call, the parameter is always the bzrdir
787
# containing the current repo.
788
if not self.first_call:
790
repository = bzrdir.open_repository()
791
except errors.NoRepositoryPresent:
794
return False, (None, repository)
795
self.first_call = False
797
value = (bzrdir.open_branch(), None)
798
except errors.NotBranchError:
803
for branch, repository in bzrdir.BzrDir.find_bzrdirs(
804
self.bzrdir.root_transport, evaluate=Evaluator()):
805
if branch is not None:
806
branches.append(branch)
807
if not using and repository is not None:
808
branches.extend(repository.find_branches())
811
def get_data_stream(self, revision_ids):
812
raise NotImplementedError(self.get_data_stream)
814
def get_data_stream_for_search(self, search_result):
815
"""Get a data stream that can be inserted to a repository.
817
:param search_result: A bzrlib.graph.SearchResult selecting the
819
:return: A data stream that can be inserted into a repository using
822
raise NotImplementedError(self.get_data_stream_for_search)
824
def insert_data_stream(self, stream):
825
"""XXX What does this really do?
827
Is it a substitute for fetch?
828
Should it manage its own write group ?
830
for item_key, bytes in stream:
831
if item_key[0] == 'file':
832
(file_id,) = item_key[1:]
833
knit = self.weave_store.get_weave_or_empty(
834
file_id, self.get_transaction())
835
elif item_key == ('inventory',):
836
knit = self.get_inventory_weave()
837
elif item_key == ('revisions',):
838
knit = self._revision_store.get_revision_file(
839
self.get_transaction())
840
elif item_key == ('signatures',):
841
knit = self._revision_store.get_signature_file(
842
self.get_transaction())
844
raise errors.RepositoryDataStreamError(
845
"Unrecognised data stream key '%s'" % (item_key,))
846
decoded_list = bencode.bdecode(bytes)
847
format = decoded_list.pop(0)
850
for version, options, parents, some_bytes in decoded_list:
851
data_list.append((version, options, len(some_bytes), parents))
852
knit_bytes += some_bytes
853
buffer = StringIO(knit_bytes)
854
def reader_func(count):
858
return buffer.read(count)
859
knit.insert_data_stream(
860
(format, data_list, reader_func))
863
def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
864
"""Return the revision ids that other has that this does not.
866
These are returned in topological order.
868
revision_id: only return revision ids included by revision_id.
870
return InterRepository.get(other, self).search_missing_revision_ids(
871
revision_id, find_ghosts)
873
@deprecated_method(symbol_versioning.one_two)
875
def missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
876
"""Return the revision ids that other has that this does not.
878
These are returned in topological order.
880
revision_id: only return revision ids included by revision_id.
882
keys = self.search_missing_revision_ids(
883
other, revision_id, find_ghosts).get_keys()
886
parents = other.get_graph().get_parent_map(keys)
889
return tsort.topo_sort(parents)
893
"""Open the repository rooted at base.
895
For instance, if the repository is at URL/.bzr/repository,
896
Repository.open(URL) -> a Repository instance.
898
control = bzrdir.BzrDir.open(base)
899
return control.open_repository()
901
def copy_content_into(self, destination, revision_id=None):
902
"""Make a complete copy of the content in self into destination.
904
This is a destructive operation! Do not use it on existing
907
return InterRepository.get(self, destination).copy_content(revision_id)
909
def commit_write_group(self):
910
"""Commit the contents accrued within the current write group.
912
:seealso: start_write_group.
914
if self._write_group is not self.get_transaction():
915
# has an unlock or relock occured ?
916
raise errors.BzrError('mismatched lock context %r and '
918
(self.get_transaction(), self._write_group))
919
self._commit_write_group()
920
self._write_group = None
922
def _commit_write_group(self):
923
"""Template method for per-repository write group cleanup.
925
This is called before the write group is considered to be
926
finished and should ensure that all data handed to the repository
927
for writing during the write group is safely committed (to the
928
extent possible considering file system caching etc).
931
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False):
932
"""Fetch the content required to construct revision_id from source.
934
If revision_id is None all content is copied.
935
:param find_ghosts: Find and copy revisions in the source that are
936
ghosts in the target (and not reachable directly by walking out to
937
the first-present revision in target from revision_id).
939
# fast path same-url fetch operations
940
if self.has_same_location(source):
941
# check that last_revision is in 'from' and then return a
943
if (revision_id is not None and
944
not _mod_revision.is_null(revision_id)):
945
self.get_revision(revision_id)
947
inter = InterRepository.get(source, self)
949
return inter.fetch(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts)
950
except NotImplementedError:
951
raise errors.IncompatibleRepositories(source, self)
953
def create_bundle(self, target, base, fileobj, format=None):
954
return serializer.write_bundle(self, target, base, fileobj, format)
956
def get_commit_builder(self, branch, parents, config, timestamp=None,
957
timezone=None, committer=None, revprops=None,
959
"""Obtain a CommitBuilder for this repository.
961
:param branch: Branch to commit to.
962
:param parents: Revision ids of the parents of the new revision.
963
:param config: Configuration to use.
964
:param timestamp: Optional timestamp recorded for commit.
965
:param timezone: Optional timezone for timestamp.
966
:param committer: Optional committer to set for commit.
967
:param revprops: Optional dictionary of revision properties.
968
:param revision_id: Optional revision id.
970
result = self._commit_builder_class(self, parents, config,
971
timestamp, timezone, committer, revprops, revision_id)
972
self.start_write_group()
976
if (self.control_files._lock_count == 1 and
977
self.control_files._lock_mode == 'w'):
978
if self._write_group is not None:
979
self.abort_write_group()
980
self.control_files.unlock()
981
raise errors.BzrError(
982
'Must end write groups before releasing write locks.')
983
self.control_files.unlock()
986
def clone(self, a_bzrdir, revision_id=None):
987
"""Clone this repository into a_bzrdir using the current format.
989
Currently no check is made that the format of this repository and
990
the bzrdir format are compatible. FIXME RBC 20060201.
992
:return: The newly created destination repository.
994
# TODO: deprecate after 0.16; cloning this with all its settings is
995
# probably not very useful -- mbp 20070423
996
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
997
self.copy_content_into(dest_repo, revision_id)
1000
def start_write_group(self):
1001
"""Start a write group in the repository.
1003
Write groups are used by repositories which do not have a 1:1 mapping
1004
between file ids and backend store to manage the insertion of data from
1005
both fetch and commit operations.
1007
A write lock is required around the start_write_group/commit_write_group
1008
for the support of lock-requiring repository formats.
1010
One can only insert data into a repository inside a write group.
1014
if not self.is_write_locked():
1015
raise errors.NotWriteLocked(self)
1016
if self._write_group:
1017
raise errors.BzrError('already in a write group')
1018
self._start_write_group()
1019
# so we can detect unlock/relock - the write group is now entered.
1020
self._write_group = self.get_transaction()
1022
def _start_write_group(self):
1023
"""Template method for per-repository write group startup.
1025
This is called before the write group is considered to be
1030
def sprout(self, to_bzrdir, revision_id=None):
1031
"""Create a descendent repository for new development.
1033
Unlike clone, this does not copy the settings of the repository.
1035
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1036
dest_repo.fetch(self, revision_id=revision_id)
1039
def _create_sprouting_repo(self, a_bzrdir, shared):
1040
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1041
# use target default format.
1042
dest_repo = a_bzrdir.create_repository()
1044
# Most control formats need the repository to be specifically
1045
# created, but on some old all-in-one formats it's not needed
1047
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1048
except errors.UninitializableFormat:
1049
dest_repo = a_bzrdir.open_repository()
1053
def has_revision(self, revision_id):
1054
"""True if this repository has a copy of the revision."""
1055
return revision_id in self.has_revisions((revision_id,))
1057
def has_revisions(self, revision_ids):
1058
"""Probe to find out the presence of multiple revisions.
1060
:param revision_ids: An iterable of revision_ids.
1061
:return: A set of the revision_ids that were present.
1063
raise NotImplementedError(self.has_revisions)
1065
return self._revision_store.has_revision_id(revision_id,
1066
self.get_transaction())
1069
def get_revision(self, revision_id):
1070
"""Return the Revision object for a named revision."""
1071
return self.get_revisions([revision_id])[0]
1074
def get_revision_reconcile(self, revision_id):
1075
"""'reconcile' helper routine that allows access to a revision always.
1077
This variant of get_revision does not cross check the weave graph
1078
against the revision one as get_revision does: but it should only
1079
be used by reconcile, or reconcile-alike commands that are correcting
1080
or testing the revision graph.
1082
return self._get_revisions([revision_id])[0]
1085
def get_revisions(self, revision_ids):
1086
"""Get many revisions at once."""
1087
return self._get_revisions(revision_ids)
1090
def _get_revisions(self, revision_ids):
1091
"""Core work logic to get many revisions without sanity checks."""
1092
for rev_id in revision_ids:
1093
if not rev_id or not isinstance(rev_id, basestring):
1094
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1095
revs = self._revision_store.get_revisions(revision_ids,
1096
self.get_transaction())
1098
assert not isinstance(rev.revision_id, unicode)
1099
for parent_id in rev.parent_ids:
1100
assert not isinstance(parent_id, unicode)
1104
def get_revision_xml(self, revision_id):
1105
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1106
# would have already do it.
1107
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1108
rev = self.get_revision(revision_id)
1109
rev_tmp = StringIO()
1110
# the current serializer..
1111
self._revision_store._serializer.write_revision(rev, rev_tmp)
1113
return rev_tmp.getvalue()
1116
def get_deltas_for_revisions(self, revisions):
1117
"""Produce a generator of revision deltas.
1119
Note that the input is a sequence of REVISIONS, not revision_ids.
1120
Trees will be held in memory until the generator exits.
1121
Each delta is relative to the revision's lefthand predecessor.
1123
required_trees = set()
1124
for revision in revisions:
1125
required_trees.add(revision.revision_id)
1126
required_trees.update(revision.parent_ids[:1])
1127
trees = dict((t.get_revision_id(), t) for
1128
t in self.revision_trees(required_trees))
1129
for revision in revisions:
1130
if not revision.parent_ids:
1131
old_tree = self.revision_tree(None)
1133
old_tree = trees[revision.parent_ids[0]]
1134
yield trees[revision.revision_id].changes_from(old_tree)
1137
def get_revision_delta(self, revision_id):
1138
"""Return the delta for one revision.
1140
The delta is relative to the left-hand predecessor of the
1143
r = self.get_revision(revision_id)
1144
return list(self.get_deltas_for_revisions([r]))[0]
1147
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1148
signature = gpg_strategy.sign(plaintext)
1149
self.add_signature_text(revision_id, signature)
1152
def add_signature_text(self, revision_id, signature):
1153
self._revision_store.add_revision_signature_text(revision_id,
1155
self.get_transaction())
1157
def find_text_key_references(self):
1158
"""Find the text key references within the repository.
1160
:return: a dictionary mapping (file_id, revision_id) tuples to altered file-ids to an iterable of
1161
revision_ids. Each altered file-ids has the exact revision_ids that
1162
altered it listed explicitly.
1163
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1164
to whether they were referred to by the inventory of the
1165
revision_id that they contain. The inventory texts from all present
1166
revision ids are assessed to generate this report.
1168
revision_ids = self.all_revision_ids()
1169
w = self.get_inventory_weave()
1170
pb = ui.ui_factory.nested_progress_bar()
1172
return self._find_text_key_references_from_xml_inventory_lines(
1173
w.iter_lines_added_or_present_in_versions(revision_ids, pb=pb))
1177
def _find_text_key_references_from_xml_inventory_lines(self,
1179
"""Core routine for extracting references to texts from inventories.
1181
This performs the translation of xml lines to revision ids.
1183
:param line_iterator: An iterator of lines, origin_version_id
1184
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1185
to whether they were referred to by the inventory of the
1186
revision_id that they contain. Note that if that revision_id was
1187
not part of the line_iterator's output then False will be given -
1188
even though it may actually refer to that key.
1190
if not self._serializer.support_altered_by_hack:
1191
raise AssertionError(
1192
"_find_text_key_references_from_xml_inventory_lines only "
1193
"supported for branches which store inventory as unnested xml"
1194
", not on %r" % self)
1197
# this code needs to read every new line in every inventory for the
1198
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
1199
# not present in one of those inventories is unnecessary but not
1200
# harmful because we are filtering by the revision id marker in the
1201
# inventory lines : we only select file ids altered in one of those
1202
# revisions. We don't need to see all lines in the inventory because
1203
# only those added in an inventory in rev X can contain a revision=X
1205
unescape_revid_cache = {}
1206
unescape_fileid_cache = {}
1208
# jam 20061218 In a big fetch, this handles hundreds of thousands
1209
# of lines, so it has had a lot of inlining and optimizing done.
1210
# Sorry that it is a little bit messy.
1211
# Move several functions to be local variables, since this is a long
1213
search = self._file_ids_altered_regex.search
1214
unescape = _unescape_xml
1215
setdefault = result.setdefault
1216
for line, version_id in line_iterator:
1217
match = search(line)
1220
# One call to match.group() returning multiple items is quite a
1221
# bit faster than 2 calls to match.group() each returning 1
1222
file_id, revision_id = match.group('file_id', 'revision_id')
1224
# Inlining the cache lookups helps a lot when you make 170,000
1225
# lines and 350k ids, versus 8.4 unique ids.
1226
# Using a cache helps in 2 ways:
1227
# 1) Avoids unnecessary decoding calls
1228
# 2) Re-uses cached strings, which helps in future set and
1230
# (2) is enough that removing encoding entirely along with
1231
# the cache (so we are using plain strings) results in no
1232
# performance improvement.
1234
revision_id = unescape_revid_cache[revision_id]
1236
unescaped = unescape(revision_id)
1237
unescape_revid_cache[revision_id] = unescaped
1238
revision_id = unescaped
1240
# Note that unconditionally unescaping means that we deserialise
1241
# every fileid, which for general 'pull' is not great, but we don't
1242
# really want to have some many fulltexts that this matters anyway.
1245
file_id = unescape_fileid_cache[file_id]
1247
unescaped = unescape(file_id)
1248
unescape_fileid_cache[file_id] = unescaped
1251
key = (file_id, revision_id)
1252
setdefault(key, False)
1253
if revision_id == version_id:
1257
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
1259
"""Helper routine for fileids_altered_by_revision_ids.
1261
This performs the translation of xml lines to revision ids.
1263
:param line_iterator: An iterator of lines, origin_version_id
1264
:param revision_ids: The revision ids to filter for. This should be a
1265
set or other type which supports efficient __contains__ lookups, as
1266
the revision id from each parsed line will be looked up in the
1267
revision_ids filter.
1268
:return: a dictionary mapping altered file-ids to an iterable of
1269
revision_ids. Each altered file-ids has the exact revision_ids that
1270
altered it listed explicitly.
1273
setdefault = result.setdefault
1274
for file_id, revision_id in \
1275
self._find_text_key_references_from_xml_inventory_lines(
1276
line_iterator).iterkeys():
1277
# once data is all ensured-consistent; then this is
1278
# if revision_id == version_id
1279
if revision_id in revision_ids:
1280
setdefault(file_id, set()).add(revision_id)
1283
def fileids_altered_by_revision_ids(self, revision_ids):
1284
"""Find the file ids and versions affected by revisions.
1286
:param revisions: an iterable containing revision ids.
1287
:return: a dictionary mapping altered file-ids to an iterable of
1288
revision_ids. Each altered file-ids has the exact revision_ids that
1289
altered it listed explicitly.
1291
selected_revision_ids = set(revision_ids)
1292
w = self.get_inventory_weave()
1293
pb = ui.ui_factory.nested_progress_bar()
1295
return self._find_file_ids_from_xml_inventory_lines(
1296
w.iter_lines_added_or_present_in_versions(
1297
selected_revision_ids, pb=pb),
1298
selected_revision_ids)
1302
def iter_files_bytes(self, desired_files):
1303
"""Iterate through file versions.
1305
Files will not necessarily be returned in the order they occur in
1306
desired_files. No specific order is guaranteed.
1308
Yields pairs of identifier, bytes_iterator. identifier is an opaque
1309
value supplied by the caller as part of desired_files. It should
1310
uniquely identify the file version in the caller's context. (Examples:
1311
an index number or a TreeTransform trans_id.)
1313
bytes_iterator is an iterable of bytestrings for the file. The
1314
kind of iterable and length of the bytestrings are unspecified, but for
1315
this implementation, it is a list of lines produced by
1316
VersionedFile.get_lines().
1318
:param desired_files: a list of (file_id, revision_id, identifier)
1321
transaction = self.get_transaction()
1322
for file_id, revision_id, callable_data in desired_files:
1324
weave = self.weave_store.get_weave(file_id, transaction)
1325
except errors.NoSuchFile:
1326
raise errors.NoSuchIdInRepository(self, file_id)
1327
yield callable_data, weave.get_lines(revision_id)
1329
def _generate_text_key_index(self, text_key_references=None,
1331
"""Generate a new text key index for the repository.
1333
This is an expensive function that will take considerable time to run.
1335
:return: A dict mapping text keys ((file_id, revision_id) tuples) to a
1336
list of parents, also text keys. When a given key has no parents,
1337
the parents list will be [NULL_REVISION].
1339
# All revisions, to find inventory parents.
1340
if ancestors is None:
1341
revision_graph = self.get_revision_graph_with_ghosts()
1342
ancestors = revision_graph.get_ancestors()
1343
if text_key_references is None:
1344
text_key_references = self.find_text_key_references()
1345
pb = ui.ui_factory.nested_progress_bar()
1347
return self._do_generate_text_key_index(ancestors,
1348
text_key_references, pb)
1352
def _do_generate_text_key_index(self, ancestors, text_key_references, pb):
1353
"""Helper for _generate_text_key_index to avoid deep nesting."""
1354
revision_order = tsort.topo_sort(ancestors)
1355
invalid_keys = set()
1357
for revision_id in revision_order:
1358
revision_keys[revision_id] = set()
1359
text_count = len(text_key_references)
1360
# a cache of the text keys to allow reuse; costs a dict of all the
1361
# keys, but saves a 2-tuple for every child of a given key.
1363
for text_key, valid in text_key_references.iteritems():
1365
invalid_keys.add(text_key)
1367
revision_keys[text_key[1]].add(text_key)
1368
text_key_cache[text_key] = text_key
1369
del text_key_references
1371
text_graph = graph.Graph(graph.DictParentsProvider(text_index))
1372
NULL_REVISION = _mod_revision.NULL_REVISION
1373
# Set a cache with a size of 10 - this suffices for bzr.dev but may be
1374
# too small for large or very branchy trees. However, for 55K path
1375
# trees, it would be easy to use too much memory trivially. Ideally we
1376
# could gauge this by looking at available real memory etc, but this is
1377
# always a tricky proposition.
1378
inventory_cache = lru_cache.LRUCache(10)
1379
batch_size = 10 # should be ~150MB on a 55K path tree
1380
batch_count = len(revision_order) / batch_size + 1
1382
pb.update("Calculating text parents.", processed_texts, text_count)
1383
for offset in xrange(batch_count):
1384
to_query = revision_order[offset * batch_size:(offset + 1) *
1388
for rev_tree in self.revision_trees(to_query):
1389
revision_id = rev_tree.get_revision_id()
1390
parent_ids = ancestors[revision_id]
1391
for text_key in revision_keys[revision_id]:
1392
pb.update("Calculating text parents.", processed_texts)
1393
processed_texts += 1
1394
candidate_parents = []
1395
for parent_id in parent_ids:
1396
parent_text_key = (text_key[0], parent_id)
1398
check_parent = parent_text_key not in \
1399
revision_keys[parent_id]
1401
# the parent parent_id is a ghost:
1402
check_parent = False
1403
# truncate the derived graph against this ghost.
1404
parent_text_key = None
1406
# look at the parent commit details inventories to
1407
# determine possible candidates in the per file graph.
1410
inv = inventory_cache[parent_id]
1412
inv = self.revision_tree(parent_id).inventory
1413
inventory_cache[parent_id] = inv
1414
parent_entry = inv._byid.get(text_key[0], None)
1415
if parent_entry is not None:
1417
text_key[0], parent_entry.revision)
1419
parent_text_key = None
1420
if parent_text_key is not None:
1421
candidate_parents.append(
1422
text_key_cache[parent_text_key])
1423
parent_heads = text_graph.heads(candidate_parents)
1424
new_parents = list(parent_heads)
1425
new_parents.sort(key=lambda x:candidate_parents.index(x))
1426
if new_parents == []:
1427
new_parents = [NULL_REVISION]
1428
text_index[text_key] = new_parents
1430
for text_key in invalid_keys:
1431
text_index[text_key] = [NULL_REVISION]
1434
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
1435
"""Get an iterable listing the keys of all the data introduced by a set
1438
The keys will be ordered so that the corresponding items can be safely
1439
fetched and inserted in that order.
1441
:returns: An iterable producing tuples of (knit-kind, file-id,
1442
versions). knit-kind is one of 'file', 'inventory', 'signatures',
1443
'revisions'. file-id is None unless knit-kind is 'file'.
1445
# XXX: it's a bit weird to control the inventory weave caching in this
1446
# generator. Ideally the caching would be done in fetch.py I think. Or
1447
# maybe this generator should explicitly have the contract that it
1448
# should not be iterated until the previously yielded item has been
1451
inv_w = self.get_inventory_weave()
1452
inv_w.enable_cache()
1454
# file ids that changed
1455
file_ids = self.fileids_altered_by_revision_ids(revision_ids)
1457
num_file_ids = len(file_ids)
1458
for file_id, altered_versions in file_ids.iteritems():
1459
if _files_pb is not None:
1460
_files_pb.update("fetch texts", count, num_file_ids)
1462
yield ("file", file_id, altered_versions)
1463
# We're done with the files_pb. Note that it finished by the caller,
1464
# just as it was created by the caller.
1468
yield ("inventory", None, revision_ids)
1472
revisions_with_signatures = set()
1473
for rev_id in revision_ids:
1475
self.get_signature_text(rev_id)
1476
except errors.NoSuchRevision:
1480
revisions_with_signatures.add(rev_id)
1482
yield ("signatures", None, revisions_with_signatures)
1485
yield ("revisions", None, revision_ids)
1488
def get_inventory_weave(self):
1489
return self.control_weaves.get_weave('inventory',
1490
self.get_transaction())
1493
def get_inventory(self, revision_id):
1494
"""Get Inventory object by revision id."""
1495
return self.iter_inventories([revision_id]).next()
1497
def iter_inventories(self, revision_ids):
1498
"""Get many inventories by revision_ids.
1500
This will buffer some or all of the texts used in constructing the
1501
inventories in memory, but will only parse a single inventory at a
1504
:return: An iterator of inventories.
1506
assert None not in revision_ids
1507
assert _mod_revision.NULL_REVISION not in revision_ids
1508
return self._iter_inventories(revision_ids)
1510
def _iter_inventories(self, revision_ids):
1511
"""single-document based inventory iteration."""
1512
texts = self.get_inventory_weave().get_texts(revision_ids)
1513
for text, revision_id in zip(texts, revision_ids):
1514
yield self.deserialise_inventory(revision_id, text)
1516
def deserialise_inventory(self, revision_id, xml):
1517
"""Transform the xml into an inventory object.
1519
:param revision_id: The expected revision id of the inventory.
1520
:param xml: A serialised inventory.
1522
result = self._serializer.read_inventory_from_string(xml, revision_id)
1523
if result.revision_id != revision_id:
1524
raise AssertionError('revision id mismatch %s != %s' % (
1525
result.revision_id, revision_id))
1528
def serialise_inventory(self, inv):
1529
return self._serializer.write_inventory_to_string(inv)
1531
def _serialise_inventory_to_lines(self, inv):
1532
return self._serializer.write_inventory_to_lines(inv)
1534
def get_serializer_format(self):
1535
return self._serializer.format_num
1538
def get_inventory_xml(self, revision_id):
1539
"""Get inventory XML as a file object."""
1541
assert isinstance(revision_id, str), type(revision_id)
1542
iw = self.get_inventory_weave()
1543
return iw.get_text(revision_id)
1545
raise errors.HistoryMissing(self, 'inventory', revision_id)
1548
def get_inventory_sha1(self, revision_id):
1549
"""Return the sha1 hash of the inventory entry
1551
return self.get_revision(revision_id).inventory_sha1
1554
def get_revision_graph(self, revision_id=None):
1555
"""Return a dictionary containing the revision graph.
1557
NB: This method should not be used as it accesses the entire graph all
1558
at once, which is much more data than most operations should require.
1560
:param revision_id: The revision_id to get a graph from. If None, then
1561
the entire revision graph is returned. This is a deprecated mode of
1562
operation and will be removed in the future.
1563
:return: a dictionary of revision_id->revision_parents_list.
1565
raise NotImplementedError(self.get_revision_graph)
1568
def get_revision_graph_with_ghosts(self, revision_ids=None):
1569
"""Return a graph of the revisions with ghosts marked as applicable.
1571
:param revision_ids: an iterable of revisions to graph or None for all.
1572
:return: a Graph object with the graph reachable from revision_ids.
1574
if 'evil' in debug.debug_flags:
1576
"get_revision_graph_with_ghosts scales with size of history.")
1577
result = deprecated_graph.Graph()
1578
if not revision_ids:
1579
pending = set(self.all_revision_ids())
1582
pending = set(revision_ids)
1583
# special case NULL_REVISION
1584
if _mod_revision.NULL_REVISION in pending:
1585
pending.remove(_mod_revision.NULL_REVISION)
1586
required = set(pending)
1589
revision_id = pending.pop()
1591
rev = self.get_revision(revision_id)
1592
except errors.NoSuchRevision:
1593
if revision_id in required:
1596
result.add_ghost(revision_id)
1598
for parent_id in rev.parent_ids:
1599
# is this queued or done ?
1600
if (parent_id not in pending and
1601
parent_id not in done):
1603
pending.add(parent_id)
1604
result.add_node(revision_id, rev.parent_ids)
1605
done.add(revision_id)
1608
def _get_history_vf(self):
1609
"""Get a versionedfile whose history graph reflects all revisions.
1611
For weave repositories, this is the inventory weave.
1613
return self.get_inventory_weave()
1615
def iter_reverse_revision_history(self, revision_id):
1616
"""Iterate backwards through revision ids in the lefthand history
1618
:param revision_id: The revision id to start with. All its lefthand
1619
ancestors will be traversed.
1621
if revision_id in (None, _mod_revision.NULL_REVISION):
1623
next_id = revision_id
1624
versionedfile = self._get_history_vf()
1627
parents = versionedfile.get_parents(next_id)
1628
if len(parents) == 0:
1631
next_id = parents[0]
1634
def get_revision_inventory(self, revision_id):
1635
"""Return inventory of a past revision."""
1636
# TODO: Unify this with get_inventory()
1637
# bzr 0.0.6 and later imposes the constraint that the inventory_id
1638
# must be the same as its revision, so this is trivial.
1639
if revision_id is None:
1640
# This does not make sense: if there is no revision,
1641
# then it is the current tree inventory surely ?!
1642
# and thus get_root_id() is something that looks at the last
1643
# commit on the branch, and the get_root_id is an inventory check.
1644
raise NotImplementedError
1645
# return Inventory(self.get_root_id())
1647
return self.get_inventory(revision_id)
1650
def is_shared(self):
1651
"""Return True if this repository is flagged as a shared repository."""
1652
raise NotImplementedError(self.is_shared)
1655
def reconcile(self, other=None, thorough=False):
1656
"""Reconcile this repository."""
1657
from bzrlib.reconcile import RepoReconciler
1658
reconciler = RepoReconciler(self, thorough=thorough)
1659
reconciler.reconcile()
1662
def _refresh_data(self):
1663
"""Helper called from lock_* to ensure coherency with disk.
1665
The default implementation does nothing; it is however possible
1666
for repositories to maintain loaded indices across multiple locks
1667
by checking inside their implementation of this method to see
1668
whether their indices are still valid. This depends of course on
1669
the disk format being validatable in this manner.
1673
def revision_tree(self, revision_id):
1674
"""Return Tree for a revision on this branch.
1676
`revision_id` may be None for the empty tree revision.
1678
# TODO: refactor this to use an existing revision object
1679
# so we don't need to read it in twice.
1680
if revision_id is None or revision_id == _mod_revision.NULL_REVISION:
1681
return RevisionTree(self, Inventory(root_id=None),
1682
_mod_revision.NULL_REVISION)
1684
inv = self.get_revision_inventory(revision_id)
1685
return RevisionTree(self, inv, revision_id)
1688
def revision_trees(self, revision_ids):
1689
"""Return Tree for a revision on this branch.
1691
`revision_id` may not be None or 'null:'"""
1692
inventories = self.iter_inventories(revision_ids)
1693
for inv in inventories:
1694
yield RevisionTree(self, inv, inv.revision_id)
1697
def get_ancestry(self, revision_id, topo_sorted=True):
1698
"""Return a list of revision-ids integrated by a revision.
1700
The first element of the list is always None, indicating the origin
1701
revision. This might change when we have history horizons, or
1702
perhaps we should have a new API.
1704
This is topologically sorted.
1706
if _mod_revision.is_null(revision_id):
1708
if not self.has_revision(revision_id):
1709
raise errors.NoSuchRevision(self, revision_id)
1710
w = self.get_inventory_weave()
1711
candidates = w.get_ancestry(revision_id, topo_sorted)
1712
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
1715
"""Compress the data within the repository.
1717
This operation only makes sense for some repository types. For other
1718
types it should be a no-op that just returns.
1720
This stub method does not require a lock, but subclasses should use
1721
@needs_write_lock as this is a long running call its reasonable to
1722
implicitly lock for the user.
1726
def print_file(self, file, revision_id):
1727
"""Print `file` to stdout.
1729
FIXME RBC 20060125 as John Meinel points out this is a bad api
1730
- it writes to stdout, it assumes that that is valid etc. Fix
1731
by creating a new more flexible convenience function.
1733
tree = self.revision_tree(revision_id)
1734
# use inventory as it was in that revision
1735
file_id = tree.inventory.path2id(file)
1737
# TODO: jam 20060427 Write a test for this code path
1738
# it had a bug in it, and was raising the wrong
1740
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1741
tree.print_file(file_id)
1743
def get_transaction(self):
1744
return self.control_files.get_transaction()
1746
def revision_parents(self, revision_id):
1747
return self.get_inventory_weave().parent_names(revision_id)
1749
@deprecated_method(symbol_versioning.one_one)
1750
def get_parents(self, revision_ids):
1751
"""See StackedParentsProvider.get_parents"""
1752
parent_map = self.get_parent_map(revision_ids)
1753
return [parent_map.get(r, None) for r in revision_ids]
1755
def get_parent_map(self, keys):
1756
"""See graph._StackedParentsProvider.get_parent_map"""
1758
for revision_id in keys:
1759
if revision_id == _mod_revision.NULL_REVISION:
1760
parent_map[revision_id] = ()
1763
parent_id_list = self.get_revision(revision_id).parent_ids
1764
except errors.NoSuchRevision:
1767
if len(parent_id_list) == 0:
1768
parent_ids = (_mod_revision.NULL_REVISION,)
1770
parent_ids = tuple(parent_id_list)
1771
parent_map[revision_id] = parent_ids
1774
def _make_parents_provider(self):
1777
def get_graph(self, other_repository=None):
1778
"""Return the graph walker for this repository format"""
1779
parents_provider = self._make_parents_provider()
1780
if (other_repository is not None and
1781
not self.has_same_location(other_repository)):
1782
parents_provider = graph._StackedParentsProvider(
1783
[parents_provider, other_repository._make_parents_provider()])
1784
return graph.Graph(parents_provider)
1786
def _get_versioned_file_checker(self):
1787
"""Return an object suitable for checking versioned files."""
1788
return _VersionedFileChecker(self)
1790
def revision_ids_to_search_result(self, result_set):
1791
"""Convert a set of revision ids to a graph SearchResult."""
1792
result_parents = set()
1793
for parents in self.get_graph().get_parent_map(
1794
result_set).itervalues():
1795
result_parents.update(parents)
1796
included_keys = result_set.intersection(result_parents)
1797
start_keys = result_set.difference(included_keys)
1798
exclude_keys = result_parents.difference(result_set)
1799
result = graph.SearchResult(start_keys, exclude_keys,
1800
len(result_set), result_set)
1804
def set_make_working_trees(self, new_value):
1805
"""Set the policy flag for making working trees when creating branches.
1807
This only applies to branches that use this repository.
1809
The default is 'True'.
1810
:param new_value: True to restore the default, False to disable making
1813
raise NotImplementedError(self.set_make_working_trees)
1815
def make_working_trees(self):
1816
"""Returns the policy for making working trees on new branches."""
1817
raise NotImplementedError(self.make_working_trees)
1820
def sign_revision(self, revision_id, gpg_strategy):
1821
plaintext = Testament.from_revision(self, revision_id).as_short_text()
1822
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1825
def has_signature_for_revision_id(self, revision_id):
1826
"""Query for a revision signature for revision_id in the repository."""
1827
return self._revision_store.has_signature(revision_id,
1828
self.get_transaction())
1831
def get_signature_text(self, revision_id):
1832
"""Return the text for a signature."""
1833
return self._revision_store.get_signature_text(revision_id,
1834
self.get_transaction())
1837
def check(self, revision_ids=None):
1838
"""Check consistency of all history of given revision_ids.
1840
Different repository implementations should override _check().
1842
:param revision_ids: A non-empty list of revision_ids whose ancestry
1843
will be checked. Typically the last revision_id of a branch.
1845
return self._check(revision_ids)
1847
def _check(self, revision_ids):
1848
result = check.Check(self)
1852
def _warn_if_deprecated(self):
1853
global _deprecation_warning_done
1854
if _deprecation_warning_done:
1856
_deprecation_warning_done = True
1857
warning("Format %s for %s is deprecated - please use 'bzr upgrade' to get better performance"
1858
% (self._format, self.bzrdir.transport.base))
1860
def supports_rich_root(self):
1861
return self._format.rich_root_data
1863
def _check_ascii_revisionid(self, revision_id, method):
1864
"""Private helper for ascii-only repositories."""
1865
# weave repositories refuse to store revisionids that are non-ascii.
1866
if revision_id is not None:
1867
# weaves require ascii revision ids.
1868
if isinstance(revision_id, unicode):
1870
revision_id.encode('ascii')
1871
except UnicodeEncodeError:
1872
raise errors.NonAsciiRevisionId(method, self)
1875
revision_id.decode('ascii')
1876
except UnicodeDecodeError:
1877
raise errors.NonAsciiRevisionId(method, self)
1879
def revision_graph_can_have_wrong_parents(self):
1880
"""Is it possible for this repository to have a revision graph with
1883
If True, then this repository must also implement
1884
_find_inconsistent_revision_parents so that check and reconcile can
1885
check for inconsistencies before proceeding with other checks that may
1886
depend on the revision index being consistent.
1888
raise NotImplementedError(self.revision_graph_can_have_wrong_parents)
1891
# remove these delegates a while after bzr 0.15
1892
def __make_delegated(name, from_module):
1893
def _deprecated_repository_forwarder():
1894
symbol_versioning.warn('%s moved to %s in bzr 0.15'
1895
% (name, from_module),
1898
m = __import__(from_module, globals(), locals(), [name])
1900
return getattr(m, name)
1901
except AttributeError:
1902
raise AttributeError('module %s has no name %s'
1904
globals()[name] = _deprecated_repository_forwarder
1907
'AllInOneRepository',
1908
'WeaveMetaDirRepository',
1909
'PreSplitOutRepositoryFormat',
1910
'RepositoryFormat4',
1911
'RepositoryFormat5',
1912
'RepositoryFormat6',
1913
'RepositoryFormat7',
1915
__make_delegated(_name, 'bzrlib.repofmt.weaverepo')
1919
'RepositoryFormatKnit',
1920
'RepositoryFormatKnit1',
1922
__make_delegated(_name, 'bzrlib.repofmt.knitrepo')
1925
def install_revision(repository, rev, revision_tree):
1926
"""Install all revision data into a repository."""
1927
install_revisions(repository, [(rev, revision_tree, None)])
1930
def install_revisions(repository, iterable, num_revisions=None, pb=None):
1931
"""Install all revision data into a repository.
1933
Accepts an iterable of revision, tree, signature tuples. The signature
1936
repository.start_write_group()
1938
for n, (revision, revision_tree, signature) in enumerate(iterable):
1939
_install_revision(repository, revision, revision_tree, signature)
1941
pb.update('Transferring revisions', n + 1, num_revisions)
1943
repository.abort_write_group()
1946
repository.commit_write_group()
1949
def _install_revision(repository, rev, revision_tree, signature):
1950
"""Install all revision data into a repository."""
1951
present_parents = []
1953
for p_id in rev.parent_ids:
1954
if repository.has_revision(p_id):
1955
present_parents.append(p_id)
1956
parent_trees[p_id] = repository.revision_tree(p_id)
1958
parent_trees[p_id] = repository.revision_tree(None)
1960
inv = revision_tree.inventory
1961
entries = inv.iter_entries()
1962
# backwards compatibility hack: skip the root id.
1963
if not repository.supports_rich_root():
1964
path, root = entries.next()
1965
if root.revision != rev.revision_id:
1966
raise errors.IncompatibleRevision(repr(repository))
1967
# Add the texts that are not already present
1968
for path, ie in entries:
1969
w = repository.weave_store.get_weave_or_empty(ie.file_id,
1970
repository.get_transaction())
1971
if ie.revision not in w:
1973
# FIXME: TODO: The following loop *may* be overlapping/duplicate
1974
# with InventoryEntry.find_previous_heads(). if it is, then there
1975
# is a latent bug here where the parents may have ancestors of each
1977
for revision, tree in parent_trees.iteritems():
1978
if ie.file_id not in tree:
1980
parent_id = tree.inventory[ie.file_id].revision
1981
if parent_id in text_parents:
1983
text_parents.append(parent_id)
1985
vfile = repository.weave_store.get_weave_or_empty(ie.file_id,
1986
repository.get_transaction())
1987
lines = revision_tree.get_file(ie.file_id).readlines()
1988
vfile.add_lines(rev.revision_id, text_parents, lines)
1990
# install the inventory
1991
repository.add_inventory(rev.revision_id, inv, present_parents)
1992
except errors.RevisionAlreadyPresent:
1994
if signature is not None:
1995
repository.add_signature_text(rev.revision_id, signature)
1996
repository.add_revision(rev.revision_id, rev, inv)
1999
class MetaDirRepository(Repository):
2000
"""Repositories in the new meta-dir layout."""
2002
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
2003
super(MetaDirRepository, self).__init__(_format,
2009
dir_mode = self.control_files._dir_mode
2010
file_mode = self.control_files._file_mode
2013
def is_shared(self):
2014
"""Return True if this repository is flagged as a shared repository."""
2015
return self.control_files._transport.has('shared-storage')
2018
def set_make_working_trees(self, new_value):
2019
"""Set the policy flag for making working trees when creating branches.
2021
This only applies to branches that use this repository.
2023
The default is 'True'.
2024
:param new_value: True to restore the default, False to disable making
2029
self.control_files._transport.delete('no-working-trees')
2030
except errors.NoSuchFile:
2033
self.control_files.put_utf8('no-working-trees', '')
2035
def make_working_trees(self):
2036
"""Returns the policy for making working trees on new branches."""
2037
return not self.control_files._transport.has('no-working-trees')
2040
class RepositoryFormatRegistry(registry.Registry):
2041
"""Registry of RepositoryFormats."""
2043
def get(self, format_string):
2044
r = registry.Registry.get(self, format_string)
2050
format_registry = RepositoryFormatRegistry()
2051
"""Registry of formats, indexed by their identifying format string.
2053
This can contain either format instances themselves, or classes/factories that
2054
can be called to obtain one.
2058
#####################################################################
2059
# Repository Formats
2061
class RepositoryFormat(object):
2062
"""A repository format.
2064
Formats provide three things:
2065
* An initialization routine to construct repository data on disk.
2066
* a format string which is used when the BzrDir supports versioned
2068
* an open routine which returns a Repository instance.
2070
There is one and only one Format subclass for each on-disk format. But
2071
there can be one Repository subclass that is used for several different
2072
formats. The _format attribute on a Repository instance can be used to
2073
determine the disk format.
2075
Formats are placed in an dict by their format string for reference
2076
during opening. These should be subclasses of RepositoryFormat
2079
Once a format is deprecated, just deprecate the initialize and open
2080
methods on the format class. Do not deprecate the object, as the
2081
object will be created every system load.
2083
Common instance attributes:
2084
_matchingbzrdir - the bzrdir format that the repository format was
2085
originally written to work with. This can be used if manually
2086
constructing a bzrdir and repository, or more commonly for test suite
2090
# Set to True or False in derived classes. True indicates that the format
2091
# supports ghosts gracefully.
2092
supports_ghosts = None
2093
# Can this repository be given external locations to lookup additional
2094
# data. Set to True or False in derived classes.
2095
supports_external_lookups = None
2098
return "<%s>" % self.__class__.__name__
2100
def __eq__(self, other):
2101
# format objects are generally stateless
2102
return isinstance(other, self.__class__)
2104
def __ne__(self, other):
2105
return not self == other
2108
def find_format(klass, a_bzrdir):
2109
"""Return the format for the repository object in a_bzrdir.
2111
This is used by bzr native formats that have a "format" file in
2112
the repository. Other methods may be used by different types of
2116
transport = a_bzrdir.get_repository_transport(None)
2117
format_string = transport.get("format").read()
2118
return format_registry.get(format_string)
2119
except errors.NoSuchFile:
2120
raise errors.NoRepositoryPresent(a_bzrdir)
2122
raise errors.UnknownFormatError(format=format_string,
2126
def register_format(klass, format):
2127
format_registry.register(format.get_format_string(), format)
2130
def unregister_format(klass, format):
2131
format_registry.remove(format.get_format_string())
2134
def get_default_format(klass):
2135
"""Return the current default format."""
2136
from bzrlib import bzrdir
2137
return bzrdir.format_registry.make_bzrdir('default').repository_format
2139
def _get_control_store(self, repo_transport, control_files):
2140
"""Return the control store for this repository."""
2141
raise NotImplementedError(self._get_control_store)
2143
def get_format_string(self):
2144
"""Return the ASCII format string that identifies this format.
2146
Note that in pre format ?? repositories the format string is
2147
not permitted nor written to disk.
2149
raise NotImplementedError(self.get_format_string)
2151
def get_format_description(self):
2152
"""Return the short description for this format."""
2153
raise NotImplementedError(self.get_format_description)
2155
def _get_revision_store(self, repo_transport, control_files):
2156
"""Return the revision store object for this a_bzrdir."""
2157
raise NotImplementedError(self._get_revision_store)
2159
def _get_text_rev_store(self,
2166
"""Common logic for getting a revision store for a repository.
2168
see self._get_revision_store for the subclass-overridable method to
2169
get the store for a repository.
2171
from bzrlib.store.revision.text import TextRevisionStore
2172
dir_mode = control_files._dir_mode
2173
file_mode = control_files._file_mode
2174
text_store = TextStore(transport.clone(name),
2176
compressed=compressed,
2178
file_mode=file_mode)
2179
_revision_store = TextRevisionStore(text_store, serializer)
2180
return _revision_store
2182
# TODO: this shouldn't be in the base class, it's specific to things that
2183
# use weaves or knits -- mbp 20070207
2184
def _get_versioned_file_store(self,
2189
versionedfile_class=None,
2190
versionedfile_kwargs={},
2192
if versionedfile_class is None:
2193
versionedfile_class = self._versionedfile_class
2194
weave_transport = control_files._transport.clone(name)
2195
dir_mode = control_files._dir_mode
2196
file_mode = control_files._file_mode
2197
return VersionedFileStore(weave_transport, prefixed=prefixed,
2199
file_mode=file_mode,
2200
versionedfile_class=versionedfile_class,
2201
versionedfile_kwargs=versionedfile_kwargs,
2204
def initialize(self, a_bzrdir, shared=False):
2205
"""Initialize a repository of this format in a_bzrdir.
2207
:param a_bzrdir: The bzrdir to put the new repository in it.
2208
:param shared: The repository should be initialized as a sharable one.
2209
:returns: The new repository object.
2211
This may raise UninitializableFormat if shared repository are not
2212
compatible the a_bzrdir.
2214
raise NotImplementedError(self.initialize)
2216
def is_supported(self):
2217
"""Is this format supported?
2219
Supported formats must be initializable and openable.
2220
Unsupported formats may not support initialization or committing or
2221
some other features depending on the reason for not being supported.
2225
def check_conversion_target(self, target_format):
2226
raise NotImplementedError(self.check_conversion_target)
2228
def open(self, a_bzrdir, _found=False):
2229
"""Return an instance of this format for the bzrdir a_bzrdir.
2231
_found is a private parameter, do not use it.
2233
raise NotImplementedError(self.open)
2236
class MetaDirRepositoryFormat(RepositoryFormat):
2237
"""Common base class for the new repositories using the metadir layout."""
2239
rich_root_data = False
2240
supports_tree_reference = False
2241
supports_external_lookups = False
2242
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2245
super(MetaDirRepositoryFormat, self).__init__()
2247
def _create_control_files(self, a_bzrdir):
2248
"""Create the required files and the initial control_files object."""
2249
# FIXME: RBC 20060125 don't peek under the covers
2250
# NB: no need to escape relative paths that are url safe.
2251
repository_transport = a_bzrdir.get_repository_transport(self)
2252
control_files = lockable_files.LockableFiles(repository_transport,
2253
'lock', lockdir.LockDir)
2254
control_files.create_lock()
2255
return control_files
2257
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
2258
"""Upload the initial blank content."""
2259
control_files = self._create_control_files(a_bzrdir)
2260
control_files.lock_write()
2262
control_files._transport.mkdir_multi(dirs,
2263
mode=control_files._dir_mode)
2264
for file, content in files:
2265
control_files.put(file, content)
2266
for file, content in utf8_files:
2267
control_files.put_utf8(file, content)
2269
control_files.put_utf8('shared-storage', '')
2271
control_files.unlock()
2274
# formats which have no format string are not discoverable
2275
# and not independently creatable, so are not registered. They're
2276
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
2277
# needed, it's constructed directly by the BzrDir. Non-native formats where
2278
# the repository is not separately opened are similar.
2280
format_registry.register_lazy(
2281
'Bazaar-NG Repository format 7',
2282
'bzrlib.repofmt.weaverepo',
2286
format_registry.register_lazy(
2287
'Bazaar-NG Knit Repository Format 1',
2288
'bzrlib.repofmt.knitrepo',
2289
'RepositoryFormatKnit1',
2292
format_registry.register_lazy(
2293
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
2294
'bzrlib.repofmt.knitrepo',
2295
'RepositoryFormatKnit3',
2298
format_registry.register_lazy(
2299
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
2300
'bzrlib.repofmt.knitrepo',
2301
'RepositoryFormatKnit4',
2304
# Pack-based formats. There is one format for pre-subtrees, and one for
2305
# post-subtrees to allow ease of testing.
2306
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
2307
format_registry.register_lazy(
2308
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
2309
'bzrlib.repofmt.pack_repo',
2310
'RepositoryFormatKnitPack1',
2312
format_registry.register_lazy(
2313
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
2314
'bzrlib.repofmt.pack_repo',
2315
'RepositoryFormatKnitPack3',
2317
format_registry.register_lazy(
2318
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
2319
'bzrlib.repofmt.pack_repo',
2320
'RepositoryFormatKnitPack4',
2322
# Development formats.
2324
# development 0 - stub to introduce development versioning scheme.
2325
format_registry.register_lazy(
2326
"Bazaar development format 0 (needs bzr.dev from before 1.3)\n",
2327
'bzrlib.repofmt.pack_repo',
2328
'RepositoryFormatPackDevelopment0',
2330
format_registry.register_lazy(
2331
("Bazaar development format 0 with subtree support "
2332
"(needs bzr.dev from before 1.3)\n"),
2333
'bzrlib.repofmt.pack_repo',
2334
'RepositoryFormatPackDevelopment0Subtree',
2336
# 1.3->1.4 go below here
2339
class InterRepository(InterObject):
2340
"""This class represents operations taking place between two repositories.
2342
Its instances have methods like copy_content and fetch, and contain
2343
references to the source and target repositories these operations can be
2346
Often we will provide convenience methods on 'repository' which carry out
2347
operations with another repository - they will always forward to
2348
InterRepository.get(other).method_name(parameters).
2352
"""The available optimised InterRepository types."""
2354
def copy_content(self, revision_id=None):
2355
raise NotImplementedError(self.copy_content)
2357
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2358
"""Fetch the content required to construct revision_id.
2360
The content is copied from self.source to self.target.
2362
:param revision_id: if None all content is copied, if NULL_REVISION no
2364
:param pb: optional progress bar to use for progress reports. If not
2365
provided a default one will be created.
2367
Returns the copied revision count and the failed revisions in a tuple:
2370
raise NotImplementedError(self.fetch)
2372
def _walk_to_common_revisions(self, revision_ids):
2373
"""Walk out from revision_ids in source to revisions target has.
2375
:param revision_ids: The start point for the search.
2376
:return: A set of revision ids.
2378
graph = self.source.get_graph()
2379
missing_revs = set()
2380
# ensure we don't pay silly lookup costs.
2381
revision_ids = frozenset(revision_ids)
2382
searcher = graph._make_breadth_first_searcher(revision_ids)
2383
null_set = frozenset([_mod_revision.NULL_REVISION])
2386
next_revs, ghosts = searcher.next_with_ghosts()
2387
except StopIteration:
2389
if revision_ids.intersection(ghosts):
2390
absent_ids = set(revision_ids.intersection(ghosts))
2391
# If all absent_ids are present in target, no error is needed.
2392
absent_ids.difference_update(
2393
self.target.has_revisions(absent_ids))
2395
raise errors.NoSuchRevision(self.source, absent_ids.pop())
2396
# we don't care about other ghosts as we can't fetch them and
2397
# haven't been asked to.
2398
next_revs = set(next_revs)
2399
# we always have NULL_REVISION present.
2400
have_revs = self.target.has_revisions(next_revs).union(null_set)
2401
missing_revs.update(next_revs - have_revs)
2402
searcher.stop_searching_any(have_revs)
2403
return searcher.get_result()
2405
@deprecated_method(symbol_versioning.one_two)
2407
def missing_revision_ids(self, revision_id=None, find_ghosts=True):
2408
"""Return the revision ids that source has that target does not.
2410
These are returned in topological order.
2412
:param revision_id: only return revision ids included by this
2414
:param find_ghosts: If True find missing revisions in deep history
2415
rather than just finding the surface difference.
2417
return list(self.search_missing_revision_ids(
2418
revision_id, find_ghosts).get_keys())
2421
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2422
"""Return the revision ids that source has that target does not.
2424
:param revision_id: only return revision ids included by this
2426
:param find_ghosts: If True find missing revisions in deep history
2427
rather than just finding the surface difference.
2428
:return: A bzrlib.graph.SearchResult.
2430
# stop searching at found target revisions.
2431
if not find_ghosts and revision_id is not None:
2432
return self._walk_to_common_revisions([revision_id])
2433
# generic, possibly worst case, slow code path.
2434
target_ids = set(self.target.all_revision_ids())
2435
if revision_id is not None:
2436
source_ids = self.source.get_ancestry(revision_id)
2437
assert source_ids[0] is None
2440
source_ids = self.source.all_revision_ids()
2441
result_set = set(source_ids).difference(target_ids)
2442
return self.source.revision_ids_to_search_result(result_set)
2445
def _same_model(source, target):
2446
"""True if source and target have the same data representation."""
2447
if source.supports_rich_root() != target.supports_rich_root():
2449
if source._serializer != target._serializer:
2454
class InterSameDataRepository(InterRepository):
2455
"""Code for converting between repositories that represent the same data.
2457
Data format and model must match for this to work.
2461
def _get_repo_format_to_test(self):
2462
"""Repository format for testing with.
2464
InterSameData can pull from subtree to subtree and from non-subtree to
2465
non-subtree, so we test this with the richest repository format.
2467
from bzrlib.repofmt import knitrepo
2468
return knitrepo.RepositoryFormatKnit3()
2471
def is_compatible(source, target):
2472
return InterRepository._same_model(source, target)
2475
def copy_content(self, revision_id=None):
2476
"""Make a complete copy of the content in self into destination.
2478
This copies both the repository's revision data, and configuration information
2479
such as the make_working_trees setting.
2481
This is a destructive operation! Do not use it on existing
2484
:param revision_id: Only copy the content needed to construct
2485
revision_id and its parents.
2488
self.target.set_make_working_trees(self.source.make_working_trees())
2489
except NotImplementedError:
2491
# but don't bother fetching if we have the needed data now.
2492
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2493
self.target.has_revision(revision_id)):
2495
self.target.fetch(self.source, revision_id=revision_id)
2498
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2499
"""See InterRepository.fetch()."""
2500
from bzrlib.fetch import GenericRepoFetcher
2501
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2502
self.source, self.source._format, self.target,
2503
self.target._format)
2504
f = GenericRepoFetcher(to_repository=self.target,
2505
from_repository=self.source,
2506
last_revision=revision_id,
2507
pb=pb, find_ghosts=find_ghosts)
2508
return f.count_copied, f.failed_revisions
2511
class InterWeaveRepo(InterSameDataRepository):
2512
"""Optimised code paths between Weave based repositories.
2514
This should be in bzrlib/repofmt/weaverepo.py but we have not yet
2515
implemented lazy inter-object optimisation.
2519
def _get_repo_format_to_test(self):
2520
from bzrlib.repofmt import weaverepo
2521
return weaverepo.RepositoryFormat7()
2524
def is_compatible(source, target):
2525
"""Be compatible with known Weave formats.
2527
We don't test for the stores being of specific types because that
2528
could lead to confusing results, and there is no need to be
2531
from bzrlib.repofmt.weaverepo import (
2537
return (isinstance(source._format, (RepositoryFormat5,
2539
RepositoryFormat7)) and
2540
isinstance(target._format, (RepositoryFormat5,
2542
RepositoryFormat7)))
2543
except AttributeError:
2547
def copy_content(self, revision_id=None):
2548
"""See InterRepository.copy_content()."""
2549
# weave specific optimised path:
2551
self.target.set_make_working_trees(self.source.make_working_trees())
2552
except NotImplementedError:
2554
# FIXME do not peek!
2555
if self.source.control_files._transport.listable():
2556
pb = ui.ui_factory.nested_progress_bar()
2558
self.target.weave_store.copy_all_ids(
2559
self.source.weave_store,
2561
from_transaction=self.source.get_transaction(),
2562
to_transaction=self.target.get_transaction())
2563
pb.update('copying inventory', 0, 1)
2564
self.target.control_weaves.copy_multi(
2565
self.source.control_weaves, ['inventory'],
2566
from_transaction=self.source.get_transaction(),
2567
to_transaction=self.target.get_transaction())
2568
self.target._revision_store.text_store.copy_all_ids(
2569
self.source._revision_store.text_store,
2574
self.target.fetch(self.source, revision_id=revision_id)
2577
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2578
"""See InterRepository.fetch()."""
2579
from bzrlib.fetch import GenericRepoFetcher
2580
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2581
self.source, self.source._format, self.target, self.target._format)
2582
f = GenericRepoFetcher(to_repository=self.target,
2583
from_repository=self.source,
2584
last_revision=revision_id,
2585
pb=pb, find_ghosts=find_ghosts)
2586
return f.count_copied, f.failed_revisions
2589
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2590
"""See InterRepository.missing_revision_ids()."""
2591
# we want all revisions to satisfy revision_id in source.
2592
# but we don't want to stat every file here and there.
2593
# we want then, all revisions other needs to satisfy revision_id
2594
# checked, but not those that we have locally.
2595
# so the first thing is to get a subset of the revisions to
2596
# satisfy revision_id in source, and then eliminate those that
2597
# we do already have.
2598
# this is slow on high latency connection to self, but as as this
2599
# disk format scales terribly for push anyway due to rewriting
2600
# inventory.weave, this is considered acceptable.
2602
if revision_id is not None:
2603
source_ids = self.source.get_ancestry(revision_id)
2604
assert source_ids[0] is None
2607
source_ids = self.source._all_possible_ids()
2608
source_ids_set = set(source_ids)
2609
# source_ids is the worst possible case we may need to pull.
2610
# now we want to filter source_ids against what we actually
2611
# have in target, but don't try to check for existence where we know
2612
# we do not have a revision as that would be pointless.
2613
target_ids = set(self.target._all_possible_ids())
2614
possibly_present_revisions = target_ids.intersection(source_ids_set)
2615
actually_present_revisions = set(
2616
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2617
required_revisions = source_ids_set.difference(actually_present_revisions)
2618
if revision_id is not None:
2619
# we used get_ancestry to determine source_ids then we are assured all
2620
# revisions referenced are present as they are installed in topological order.
2621
# and the tip revision was validated by get_ancestry.
2622
result_set = required_revisions
2624
# if we just grabbed the possibly available ids, then
2625
# we only have an estimate of whats available and need to validate
2626
# that against the revision records.
2628
self.source._eliminate_revisions_not_present(required_revisions))
2629
return self.source.revision_ids_to_search_result(result_set)
2632
class InterKnitRepo(InterSameDataRepository):
2633
"""Optimised code paths between Knit based repositories."""
2636
def _get_repo_format_to_test(self):
2637
from bzrlib.repofmt import knitrepo
2638
return knitrepo.RepositoryFormatKnit1()
2641
def is_compatible(source, target):
2642
"""Be compatible with known Knit formats.
2644
We don't test for the stores being of specific types because that
2645
could lead to confusing results, and there is no need to be
2648
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
2650
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
2651
isinstance(target._format, RepositoryFormatKnit))
2652
except AttributeError:
2654
return are_knits and InterRepository._same_model(source, target)
2657
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2658
"""See InterRepository.fetch()."""
2659
from bzrlib.fetch import KnitRepoFetcher
2660
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2661
self.source, self.source._format, self.target, self.target._format)
2662
f = KnitRepoFetcher(to_repository=self.target,
2663
from_repository=self.source,
2664
last_revision=revision_id,
2665
pb=pb, find_ghosts=find_ghosts)
2666
return f.count_copied, f.failed_revisions
2669
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2670
"""See InterRepository.missing_revision_ids()."""
2671
if revision_id is not None:
2672
source_ids = self.source.get_ancestry(revision_id)
2673
assert source_ids[0] is None
2676
source_ids = self.source.all_revision_ids()
2677
source_ids_set = set(source_ids)
2678
# source_ids is the worst possible case we may need to pull.
2679
# now we want to filter source_ids against what we actually
2680
# have in target, but don't try to check for existence where we know
2681
# we do not have a revision as that would be pointless.
2682
target_ids = set(self.target.all_revision_ids())
2683
possibly_present_revisions = target_ids.intersection(source_ids_set)
2684
actually_present_revisions = set(
2685
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2686
required_revisions = source_ids_set.difference(actually_present_revisions)
2687
if revision_id is not None:
2688
# we used get_ancestry to determine source_ids then we are assured all
2689
# revisions referenced are present as they are installed in topological order.
2690
# and the tip revision was validated by get_ancestry.
2691
result_set = required_revisions
2693
# if we just grabbed the possibly available ids, then
2694
# we only have an estimate of whats available and need to validate
2695
# that against the revision records.
2697
self.source._eliminate_revisions_not_present(required_revisions))
2698
return self.source.revision_ids_to_search_result(result_set)
2701
class InterPackRepo(InterSameDataRepository):
2702
"""Optimised code paths between Pack based repositories."""
2705
def _get_repo_format_to_test(self):
2706
from bzrlib.repofmt import pack_repo
2707
return pack_repo.RepositoryFormatKnitPack1()
2710
def is_compatible(source, target):
2711
"""Be compatible with known Pack formats.
2713
We don't test for the stores being of specific types because that
2714
could lead to confusing results, and there is no need to be
2717
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2719
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2720
isinstance(target._format, RepositoryFormatPack))
2721
except AttributeError:
2723
return are_packs and InterRepository._same_model(source, target)
2726
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2727
"""See InterRepository.fetch()."""
2728
from bzrlib.repofmt.pack_repo import Packer
2729
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2730
self.source, self.source._format, self.target, self.target._format)
2731
self.count_copied = 0
2732
if revision_id is None:
2734
# everything to do - use pack logic
2735
# to fetch from all packs to one without
2736
# inventory parsing etc, IFF nothing to be copied is in the target.
2738
revision_ids = self.source.all_revision_ids()
2739
# implementing the TODO will involve:
2740
# - detecting when all of a pack is selected
2741
# - avoiding as much as possible pre-selection, so the
2742
# more-core routines such as create_pack_from_packs can filter in
2743
# a just-in-time fashion. (though having a HEADS list on a
2744
# repository might make this a lot easier, because we could
2745
# sensibly detect 'new revisions' without doing a full index scan.
2746
elif _mod_revision.is_null(revision_id):
2751
revision_ids = self.search_missing_revision_ids(revision_id,
2752
find_ghosts=find_ghosts).get_keys()
2753
except errors.NoSuchRevision:
2754
raise errors.InstallFailed([revision_id])
2755
packs = self.source._pack_collection.all_packs()
2756
pack = Packer(self.target._pack_collection, packs, '.fetch',
2757
revision_ids).pack()
2758
if pack is not None:
2759
self.target._pack_collection._save_pack_names()
2760
# Trigger an autopack. This may duplicate effort as we've just done
2761
# a pack creation, but for now it is simpler to think about as
2762
# 'upload data, then repack if needed'.
2763
self.target._pack_collection.autopack()
2764
return (pack.get_revision_count(), [])
2769
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2770
"""See InterRepository.missing_revision_ids().
2772
:param find_ghosts: Find ghosts throughout the ancestry of
2775
if not find_ghosts and revision_id is not None:
2776
return self._walk_to_common_revisions([revision_id])
2777
elif revision_id is not None:
2778
source_ids = self.source.get_ancestry(revision_id)
2779
assert source_ids[0] is None
2782
source_ids = self.source.all_revision_ids()
2783
# source_ids is the worst possible case we may need to pull.
2784
# now we want to filter source_ids against what we actually
2785
# have in target, but don't try to check for existence where we know
2786
# we do not have a revision as that would be pointless.
2787
target_ids = set(self.target.all_revision_ids())
2788
result_set = set(source_ids).difference(target_ids)
2789
return self.source.revision_ids_to_search_result(result_set)
2792
class InterModel1and2(InterRepository):
2795
def _get_repo_format_to_test(self):
2799
def is_compatible(source, target):
2800
if not source.supports_rich_root() and target.supports_rich_root():
2806
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2807
"""See InterRepository.fetch()."""
2808
from bzrlib.fetch import Model1toKnit2Fetcher
2809
f = Model1toKnit2Fetcher(to_repository=self.target,
2810
from_repository=self.source,
2811
last_revision=revision_id,
2812
pb=pb, find_ghosts=find_ghosts)
2813
return f.count_copied, f.failed_revisions
2816
def copy_content(self, revision_id=None):
2817
"""Make a complete copy of the content in self into destination.
2819
This is a destructive operation! Do not use it on existing
2822
:param revision_id: Only copy the content needed to construct
2823
revision_id and its parents.
2826
self.target.set_make_working_trees(self.source.make_working_trees())
2827
except NotImplementedError:
2829
# but don't bother fetching if we have the needed data now.
2830
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2831
self.target.has_revision(revision_id)):
2833
self.target.fetch(self.source, revision_id=revision_id)
2836
class InterKnit1and2(InterKnitRepo):
2839
def _get_repo_format_to_test(self):
2843
def is_compatible(source, target):
2844
"""Be compatible with Knit1 source and Knit3 target"""
2845
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit3
2847
from bzrlib.repofmt.knitrepo import (RepositoryFormatKnit1,
2848
RepositoryFormatKnit3)
2849
from bzrlib.repofmt.pack_repo import (
2850
RepositoryFormatKnitPack1,
2851
RepositoryFormatKnitPack3,
2852
RepositoryFormatPackDevelopment0,
2853
RepositoryFormatPackDevelopment0Subtree,
2856
RepositoryFormatKnit1,
2857
RepositoryFormatKnitPack1,
2858
RepositoryFormatPackDevelopment0,
2861
RepositoryFormatKnit3,
2862
RepositoryFormatKnitPack3,
2863
RepositoryFormatPackDevelopment0Subtree,
2865
return (isinstance(source._format, nosubtrees) and
2866
isinstance(target._format, subtrees))
2867
except AttributeError:
2871
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2872
"""See InterRepository.fetch()."""
2873
from bzrlib.fetch import Knit1to2Fetcher
2874
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2875
self.source, self.source._format, self.target,
2876
self.target._format)
2877
f = Knit1to2Fetcher(to_repository=self.target,
2878
from_repository=self.source,
2879
last_revision=revision_id,
2880
pb=pb, find_ghosts=find_ghosts)
2881
return f.count_copied, f.failed_revisions
2884
class InterDifferingSerializer(InterKnitRepo):
2887
def _get_repo_format_to_test(self):
2891
def is_compatible(source, target):
2892
"""Be compatible with Knit2 source and Knit3 target"""
2893
if source.supports_rich_root() != target.supports_rich_root():
2895
# Ideally, we'd support fetching if the source had no tree references
2896
# even if it supported them...
2897
if (getattr(source, '_format.supports_tree_reference', False) and
2898
not getattr(target, '_format.supports_tree_reference', False)):
2903
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2904
"""See InterRepository.fetch()."""
2905
revision_ids = self.target.search_missing_revision_ids(self.source,
2906
revision_id, find_ghosts=find_ghosts).get_keys()
2907
revision_ids = tsort.topo_sort(
2908
self.source.get_graph().get_parent_map(revision_ids))
2909
def revisions_iterator():
2910
for current_revision_id in revision_ids:
2911
revision = self.source.get_revision(current_revision_id)
2912
tree = self.source.revision_tree(current_revision_id)
2914
signature = self.source.get_signature_text(
2915
current_revision_id)
2916
except errors.NoSuchRevision:
2918
yield revision, tree, signature
2920
my_pb = ui.ui_factory.nested_progress_bar()
2925
install_revisions(self.target, revisions_iterator(),
2926
len(revision_ids), pb)
2928
if my_pb is not None:
2930
return len(revision_ids), 0
2933
class InterRemoteToOther(InterRepository):
2935
def __init__(self, source, target):
2936
InterRepository.__init__(self, source, target)
2937
self._real_inter = None
2940
def is_compatible(source, target):
2941
if not isinstance(source, remote.RemoteRepository):
2943
# Is source's model compatible with target's model?
2944
source._ensure_real()
2945
real_source = source._real_repository
2946
assert not isinstance(real_source, remote.RemoteRepository), (
2947
"We don't support remote repos backed by remote repos yet.")
2948
return InterRepository._same_model(real_source, target)
2951
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2952
"""See InterRepository.fetch()."""
2953
from bzrlib.fetch import RemoteToOtherFetcher
2954
mutter("Using fetch logic to copy between %s(remote) and %s(%s)",
2955
self.source, self.target, self.target._format)
2956
# TODO: jam 20070210 This should be an assert, not a translate
2957
revision_id = osutils.safe_revision_id(revision_id)
2958
f = RemoteToOtherFetcher(to_repository=self.target,
2959
from_repository=self.source,
2960
last_revision=revision_id,
2961
pb=pb, find_ghosts=find_ghosts)
2962
return f.count_copied, f.failed_revisions
2965
def _get_repo_format_to_test(self):
2969
class InterOtherToRemote(InterRepository):
2971
def __init__(self, source, target):
2972
InterRepository.__init__(self, source, target)
2973
self._real_inter = None
2976
def is_compatible(source, target):
2977
if isinstance(target, remote.RemoteRepository):
2981
def _ensure_real_inter(self):
2982
if self._real_inter is None:
2983
self.target._ensure_real()
2984
real_target = self.target._real_repository
2985
self._real_inter = InterRepository.get(self.source, real_target)
2987
def copy_content(self, revision_id=None):
2988
self._ensure_real_inter()
2989
self._real_inter.copy_content(revision_id=revision_id)
2991
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2992
self._ensure_real_inter()
2993
self._real_inter.fetch(revision_id=revision_id, pb=pb,
2994
find_ghosts=find_ghosts)
2997
def _get_repo_format_to_test(self):
3001
InterRepository.register_optimiser(InterDifferingSerializer)
3002
InterRepository.register_optimiser(InterSameDataRepository)
3003
InterRepository.register_optimiser(InterWeaveRepo)
3004
InterRepository.register_optimiser(InterKnitRepo)
3005
InterRepository.register_optimiser(InterModel1and2)
3006
InterRepository.register_optimiser(InterKnit1and2)
3007
InterRepository.register_optimiser(InterPackRepo)
3008
InterRepository.register_optimiser(InterRemoteToOther)
3009
InterRepository.register_optimiser(InterOtherToRemote)
3012
class CopyConverter(object):
3013
"""A repository conversion tool which just performs a copy of the content.
3015
This is slow but quite reliable.
3018
def __init__(self, target_format):
3019
"""Create a CopyConverter.
3021
:param target_format: The format the resulting repository should be.
3023
self.target_format = target_format
3025
def convert(self, repo, pb):
3026
"""Perform the conversion of to_convert, giving feedback via pb.
3028
:param to_convert: The disk object to convert.
3029
:param pb: a progress bar to use for progress information.
3034
# this is only useful with metadir layouts - separated repo content.
3035
# trigger an assertion if not such
3036
repo._format.get_format_string()
3037
self.repo_dir = repo.bzrdir
3038
self.step('Moving repository to repository.backup')
3039
self.repo_dir.transport.move('repository', 'repository.backup')
3040
backup_transport = self.repo_dir.transport.clone('repository.backup')
3041
repo._format.check_conversion_target(self.target_format)
3042
self.source_repo = repo._format.open(self.repo_dir,
3044
_override_transport=backup_transport)
3045
self.step('Creating new repository')
3046
converted = self.target_format.initialize(self.repo_dir,
3047
self.source_repo.is_shared())
3048
converted.lock_write()
3050
self.step('Copying content into repository.')
3051
self.source_repo.copy_content_into(converted)
3054
self.step('Deleting old repository content.')
3055
self.repo_dir.transport.delete_tree('repository.backup')
3056
self.pb.note('repository converted')
3058
def step(self, message):
3059
"""Update the pb by a step."""
3061
self.pb.update(message, self.count, self.total)
3073
def _unescaper(match, _map=_unescape_map):
3074
code = match.group(1)
3078
if not code.startswith('#'):
3080
return unichr(int(code[1:])).encode('utf8')
3086
def _unescape_xml(data):
3087
"""Unescape predefined XML entities in a string of data."""
3089
if _unescape_re is None:
3090
_unescape_re = re.compile('\&([^;]*);')
3091
return _unescape_re.sub(_unescaper, data)
3094
class _VersionedFileChecker(object):
3096
def __init__(self, repository):
3097
self.repository = repository
3098
self.text_index = self.repository._generate_text_key_index()
3100
def calculate_file_version_parents(self, revision_id, file_id):
3101
"""Calculate the correct parents for a file version according to
3104
parent_keys = self.text_index[(file_id, revision_id)]
3105
if parent_keys == [_mod_revision.NULL_REVISION]:
3107
# strip the file_id, for the weave api
3108
return tuple([revision_id for file_id, revision_id in parent_keys])
3110
def check_file_version_parents(self, weave, file_id):
3111
"""Check the parents stored in a versioned file are correct.
3113
It also detects file versions that are not referenced by their
3114
corresponding revision's inventory.
3116
:returns: A tuple of (wrong_parents, dangling_file_versions).
3117
wrong_parents is a dict mapping {revision_id: (stored_parents,
3118
correct_parents)} for each revision_id where the stored parents
3119
are not correct. dangling_file_versions is a set of (file_id,
3120
revision_id) tuples for versions that are present in this versioned
3121
file, but not used by the corresponding inventory.
3124
unused_versions = set()
3125
for num, revision_id in enumerate(weave.versions()):
3127
correct_parents = self.calculate_file_version_parents(
3128
revision_id, file_id)
3130
# The version is not part of the used keys.
3131
unused_versions.add(revision_id)
3134
knit_parents = tuple(weave.get_parents(revision_id))
3135
except errors.RevisionNotPresent:
3137
if correct_parents != knit_parents:
3138
wrong_parents[revision_id] = (knit_parents, correct_parents)
3139
return wrong_parents, unused_versions
added
removed
bzrlib/repository.py
