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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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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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if content_summary[2] is None:
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raise ValueError("Files must not have executable = None")
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if (# if the file length changed we have to store:
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parent_entry.text_size != content_summary[1] or
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# if the exec bit has changed we have to store:
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parent_entry.executable != content_summary[2]):
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elif parent_entry.text_sha1 == content_summary[3]:
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# all meta and content is unchanged (using a hash cache
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# hit to check the sha)
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ie.revision = parent_entry.revision
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ie.text_size = parent_entry.text_size
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ie.text_sha1 = parent_entry.text_sha1
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ie.executable = parent_entry.executable
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return self._get_delta(ie, basis_inv, path), False
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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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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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if not self.is_in_write_group():
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raise AssertionError("%r not in write group" % (self,))
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_mod_revision.check_not_reserved_id(revision_id)
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if not (inv.revision_id is None or inv.revision_id == revision_id):
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raise AssertionError(
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"Mismatch between inventory revision"
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" id and insertion revid (%r, %r)"
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% (inv.revision_id, revision_id))
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raise AssertionError()
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inv_lines = self._serialise_inventory_to_lines(inv)
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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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inventory_vf = self.get_inventory_weave()
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if not revision_id in inventory_vf:
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raise errors.WeaveRevisionNotPresent(revision_id,
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# yes, this is not suitable for adding with ghosts.
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rev.inventory_sha1 = self.add_inventory(revision_id, inv,
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rev.inventory_sha1 = inventory_vf.get_sha1s([revision_id])[0]
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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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graph = self.get_graph()
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parent_map = graph.get_parent_map(revision_ids)
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# The old API returned a list, should this actually be a set?
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return parent_map.keys()
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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()
713
def dont_leave_lock_in_place(self):
714
"""Tell this repository to release the physical lock when this
715
object is unlocked, even if it didn't originally acquire it.
717
If lock_write doesn't return a token, then this method is not supported.
719
self.control_files.dont_leave_in_place()
722
def gather_stats(self, revid=None, committers=None):
723
"""Gather statistics from a revision id.
725
:param revid: The revision id to gather statistics from, if None, then
726
no revision specific statistics are gathered.
727
:param committers: Optional parameter controlling whether to grab
728
a count of committers from the revision specific statistics.
729
:return: A dictionary of statistics. Currently this contains:
730
committers: The number of committers if requested.
731
firstrev: A tuple with timestamp, timezone for the penultimate left
732
most ancestor of revid, if revid is not the NULL_REVISION.
733
latestrev: A tuple with timestamp, timezone for revid, if revid is
734
not the NULL_REVISION.
735
revisions: The total revision count in the repository.
736
size: An estimate disk size of the repository in bytes.
739
if revid and committers:
740
result['committers'] = 0
741
if revid and revid != _mod_revision.NULL_REVISION:
743
all_committers = set()
744
revisions = self.get_ancestry(revid)
745
# pop the leading None
747
first_revision = None
749
# ignore the revisions in the middle - just grab first and last
750
revisions = revisions[0], revisions[-1]
751
for revision in self.get_revisions(revisions):
752
if not first_revision:
753
first_revision = revision
755
all_committers.add(revision.committer)
756
last_revision = revision
758
result['committers'] = len(all_committers)
759
result['firstrev'] = (first_revision.timestamp,
760
first_revision.timezone)
761
result['latestrev'] = (last_revision.timestamp,
762
last_revision.timezone)
764
# now gather global repository information
765
if self.bzrdir.root_transport.listable():
766
c, t = self._revision_store.total_size(self.get_transaction())
767
result['revisions'] = c
771
def find_branches(self, using=False):
772
"""Find branches underneath this repository.
774
This will include branches inside other branches.
776
:param using: If True, list only branches using this repository.
778
if using and not self.is_shared():
780
return [self.bzrdir.open_branch()]
781
except errors.NotBranchError:
783
class Evaluator(object):
786
self.first_call = True
788
def __call__(self, bzrdir):
789
# On the first call, the parameter is always the bzrdir
790
# containing the current repo.
791
if not self.first_call:
793
repository = bzrdir.open_repository()
794
except errors.NoRepositoryPresent:
797
return False, (None, repository)
798
self.first_call = False
800
value = (bzrdir.open_branch(), None)
801
except errors.NotBranchError:
806
for branch, repository in bzrdir.BzrDir.find_bzrdirs(
807
self.bzrdir.root_transport, evaluate=Evaluator()):
808
if branch is not None:
809
branches.append(branch)
810
if not using and repository is not None:
811
branches.extend(repository.find_branches())
814
def get_data_stream(self, revision_ids):
815
raise NotImplementedError(self.get_data_stream)
817
def get_data_stream_for_search(self, search_result):
818
"""Get a data stream that can be inserted to a repository.
820
:param search_result: A bzrlib.graph.SearchResult selecting the
822
:return: A data stream that can be inserted into a repository using
825
raise NotImplementedError(self.get_data_stream_for_search)
827
def insert_data_stream(self, stream):
828
"""XXX What does this really do?
830
Is it a substitute for fetch?
831
Should it manage its own write group ?
833
for item_key, bytes in stream:
834
if item_key[0] == 'file':
835
(file_id,) = item_key[1:]
836
knit = self.weave_store.get_weave_or_empty(
837
file_id, self.get_transaction())
838
elif item_key == ('inventory',):
839
knit = self.get_inventory_weave()
840
elif item_key == ('revisions',):
841
knit = self._revision_store.get_revision_file(
842
self.get_transaction())
843
elif item_key == ('signatures',):
844
knit = self._revision_store.get_signature_file(
845
self.get_transaction())
847
raise errors.RepositoryDataStreamError(
848
"Unrecognised data stream key '%s'" % (item_key,))
849
decoded_list = bencode.bdecode(bytes)
850
format = decoded_list.pop(0)
853
for version, options, parents, some_bytes in decoded_list:
854
data_list.append((version, options, len(some_bytes), parents))
855
knit_bytes += some_bytes
856
buffer = StringIO(knit_bytes)
857
def reader_func(count):
861
return buffer.read(count)
862
knit.insert_data_stream(
863
(format, data_list, reader_func))
866
def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
867
"""Return the revision ids that other has that this does not.
869
These are returned in topological order.
871
revision_id: only return revision ids included by revision_id.
873
return InterRepository.get(other, self).search_missing_revision_ids(
874
revision_id, find_ghosts)
876
@deprecated_method(symbol_versioning.one_two)
878
def missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
879
"""Return the revision ids that other has that this does not.
881
These are returned in topological order.
883
revision_id: only return revision ids included by revision_id.
885
keys = self.search_missing_revision_ids(
886
other, revision_id, find_ghosts).get_keys()
889
parents = other.get_graph().get_parent_map(keys)
892
return tsort.topo_sort(parents)
896
"""Open the repository rooted at base.
898
For instance, if the repository is at URL/.bzr/repository,
899
Repository.open(URL) -> a Repository instance.
901
control = bzrdir.BzrDir.open(base)
902
return control.open_repository()
904
def copy_content_into(self, destination, revision_id=None):
905
"""Make a complete copy of the content in self into destination.
907
This is a destructive operation! Do not use it on existing
910
return InterRepository.get(self, destination).copy_content(revision_id)
912
def commit_write_group(self):
913
"""Commit the contents accrued within the current write group.
915
:seealso: start_write_group.
917
if self._write_group is not self.get_transaction():
918
# has an unlock or relock occured ?
919
raise errors.BzrError('mismatched lock context %r and '
921
(self.get_transaction(), self._write_group))
922
self._commit_write_group()
923
self._write_group = None
925
def _commit_write_group(self):
926
"""Template method for per-repository write group cleanup.
928
This is called before the write group is considered to be
929
finished and should ensure that all data handed to the repository
930
for writing during the write group is safely committed (to the
931
extent possible considering file system caching etc).
934
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False):
935
"""Fetch the content required to construct revision_id from source.
937
If revision_id is None all content is copied.
938
:param find_ghosts: Find and copy revisions in the source that are
939
ghosts in the target (and not reachable directly by walking out to
940
the first-present revision in target from revision_id).
942
# fast path same-url fetch operations
943
if self.has_same_location(source):
944
# check that last_revision is in 'from' and then return a
946
if (revision_id is not None and
947
not _mod_revision.is_null(revision_id)):
948
self.get_revision(revision_id)
950
inter = InterRepository.get(source, self)
952
return inter.fetch(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts)
953
except NotImplementedError:
954
raise errors.IncompatibleRepositories(source, self)
956
def create_bundle(self, target, base, fileobj, format=None):
957
return serializer.write_bundle(self, target, base, fileobj, format)
959
def get_commit_builder(self, branch, parents, config, timestamp=None,
960
timezone=None, committer=None, revprops=None,
962
"""Obtain a CommitBuilder for this repository.
964
:param branch: Branch to commit to.
965
:param parents: Revision ids of the parents of the new revision.
966
:param config: Configuration to use.
967
:param timestamp: Optional timestamp recorded for commit.
968
:param timezone: Optional timezone for timestamp.
969
:param committer: Optional committer to set for commit.
970
:param revprops: Optional dictionary of revision properties.
971
:param revision_id: Optional revision id.
973
result = self._commit_builder_class(self, parents, config,
974
timestamp, timezone, committer, revprops, revision_id)
975
self.start_write_group()
979
if (self.control_files._lock_count == 1 and
980
self.control_files._lock_mode == 'w'):
981
if self._write_group is not None:
982
self.abort_write_group()
983
self.control_files.unlock()
984
raise errors.BzrError(
985
'Must end write groups before releasing write locks.')
986
self.control_files.unlock()
989
def clone(self, a_bzrdir, revision_id=None):
990
"""Clone this repository into a_bzrdir using the current format.
992
Currently no check is made that the format of this repository and
993
the bzrdir format are compatible. FIXME RBC 20060201.
995
:return: The newly created destination repository.
997
# TODO: deprecate after 0.16; cloning this with all its settings is
998
# probably not very useful -- mbp 20070423
999
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
1000
self.copy_content_into(dest_repo, revision_id)
1003
def start_write_group(self):
1004
"""Start a write group in the repository.
1006
Write groups are used by repositories which do not have a 1:1 mapping
1007
between file ids and backend store to manage the insertion of data from
1008
both fetch and commit operations.
1010
A write lock is required around the start_write_group/commit_write_group
1011
for the support of lock-requiring repository formats.
1013
One can only insert data into a repository inside a write group.
1017
if not self.is_write_locked():
1018
raise errors.NotWriteLocked(self)
1019
if self._write_group:
1020
raise errors.BzrError('already in a write group')
1021
self._start_write_group()
1022
# so we can detect unlock/relock - the write group is now entered.
1023
self._write_group = self.get_transaction()
1025
def _start_write_group(self):
1026
"""Template method for per-repository write group startup.
1028
This is called before the write group is considered to be
1033
def sprout(self, to_bzrdir, revision_id=None):
1034
"""Create a descendent repository for new development.
1036
Unlike clone, this does not copy the settings of the repository.
1038
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1039
dest_repo.fetch(self, revision_id=revision_id)
1042
def _create_sprouting_repo(self, a_bzrdir, shared):
1043
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1044
# use target default format.
1045
dest_repo = a_bzrdir.create_repository()
1047
# Most control formats need the repository to be specifically
1048
# created, but on some old all-in-one formats it's not needed
1050
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1051
except errors.UninitializableFormat:
1052
dest_repo = a_bzrdir.open_repository()
1056
def has_revision(self, revision_id):
1057
"""True if this repository has a copy of the revision."""
1058
return revision_id in self.has_revisions((revision_id,))
1060
def has_revisions(self, revision_ids):
1061
"""Probe to find out the presence of multiple revisions.
1063
:param revision_ids: An iterable of revision_ids.
1064
:return: A set of the revision_ids that were present.
1066
raise NotImplementedError(self.has_revisions)
1068
return self._revision_store.has_revision_id(revision_id,
1069
self.get_transaction())
1072
def get_revision(self, revision_id):
1073
"""Return the Revision object for a named revision."""
1074
return self.get_revisions([revision_id])[0]
1077
def get_revision_reconcile(self, revision_id):
1078
"""'reconcile' helper routine that allows access to a revision always.
1080
This variant of get_revision does not cross check the weave graph
1081
against the revision one as get_revision does: but it should only
1082
be used by reconcile, or reconcile-alike commands that are correcting
1083
or testing the revision graph.
1085
return self._get_revisions([revision_id])[0]
1088
def get_revisions(self, revision_ids):
1089
"""Get many revisions at once."""
1090
return self._get_revisions(revision_ids)
1093
def _get_revisions(self, revision_ids):
1094
"""Core work logic to get many revisions without sanity checks."""
1095
for rev_id in revision_ids:
1096
if not rev_id or not isinstance(rev_id, basestring):
1097
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1098
revs = self._revision_store.get_revisions(revision_ids,
1099
self.get_transaction())
1103
def get_revision_xml(self, revision_id):
1104
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1105
# would have already do it.
1106
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1107
rev = self.get_revision(revision_id)
1108
rev_tmp = StringIO()
1109
# the current serializer..
1110
self._revision_store._serializer.write_revision(rev, rev_tmp)
1112
return rev_tmp.getvalue()
1114
def get_deltas_for_revisions(self, revisions):
1115
"""Produce a generator of revision deltas.
1117
Note that the input is a sequence of REVISIONS, not revision_ids.
1118
Trees will be held in memory until the generator exits.
1119
Each delta is relative to the revision's lefthand predecessor.
1121
required_trees = set()
1122
for revision in revisions:
1123
required_trees.add(revision.revision_id)
1124
required_trees.update(revision.parent_ids[:1])
1125
trees = dict((t.get_revision_id(), t) for
1126
t in self.revision_trees(required_trees))
1127
for revision in revisions:
1128
if not revision.parent_ids:
1129
old_tree = self.revision_tree(None)
1131
old_tree = trees[revision.parent_ids[0]]
1132
yield trees[revision.revision_id].changes_from(old_tree)
1135
def get_revision_delta(self, revision_id):
1136
"""Return the delta for one revision.
1138
The delta is relative to the left-hand predecessor of the
1141
r = self.get_revision(revision_id)
1142
return list(self.get_deltas_for_revisions([r]))[0]
1145
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1146
signature = gpg_strategy.sign(plaintext)
1147
self.add_signature_text(revision_id, signature)
1150
def add_signature_text(self, revision_id, signature):
1151
self._revision_store.add_revision_signature_text(revision_id,
1153
self.get_transaction())
1155
def find_text_key_references(self):
1156
"""Find the text key references within the repository.
1158
:return: a dictionary mapping (file_id, revision_id) tuples to altered file-ids to an iterable of
1159
revision_ids. Each altered file-ids has the exact revision_ids that
1160
altered it listed explicitly.
1161
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1162
to whether they were referred to by the inventory of the
1163
revision_id that they contain. The inventory texts from all present
1164
revision ids are assessed to generate this report.
1166
revision_ids = self.all_revision_ids()
1167
w = self.get_inventory_weave()
1168
pb = ui.ui_factory.nested_progress_bar()
1170
return self._find_text_key_references_from_xml_inventory_lines(
1171
w.iter_lines_added_or_present_in_versions(revision_ids, pb=pb))
1175
def _find_text_key_references_from_xml_inventory_lines(self,
1177
"""Core routine for extracting references to texts from inventories.
1179
This performs the translation of xml lines to revision ids.
1181
:param line_iterator: An iterator of lines, origin_version_id
1182
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1183
to whether they were referred to by the inventory of the
1184
revision_id that they contain. Note that if that revision_id was
1185
not part of the line_iterator's output then False will be given -
1186
even though it may actually refer to that key.
1188
if not self._serializer.support_altered_by_hack:
1189
raise AssertionError(
1190
"_find_text_key_references_from_xml_inventory_lines only "
1191
"supported for branches which store inventory as unnested xml"
1192
", not on %r" % self)
1195
# this code needs to read every new line in every inventory for the
1196
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
1197
# not present in one of those inventories is unnecessary but not
1198
# harmful because we are filtering by the revision id marker in the
1199
# inventory lines : we only select file ids altered in one of those
1200
# revisions. We don't need to see all lines in the inventory because
1201
# only those added in an inventory in rev X can contain a revision=X
1203
unescape_revid_cache = {}
1204
unescape_fileid_cache = {}
1206
# jam 20061218 In a big fetch, this handles hundreds of thousands
1207
# of lines, so it has had a lot of inlining and optimizing done.
1208
# Sorry that it is a little bit messy.
1209
# Move several functions to be local variables, since this is a long
1211
search = self._file_ids_altered_regex.search
1212
unescape = _unescape_xml
1213
setdefault = result.setdefault
1214
for line, version_id in line_iterator:
1215
match = search(line)
1218
# One call to match.group() returning multiple items is quite a
1219
# bit faster than 2 calls to match.group() each returning 1
1220
file_id, revision_id = match.group('file_id', 'revision_id')
1222
# Inlining the cache lookups helps a lot when you make 170,000
1223
# lines and 350k ids, versus 8.4 unique ids.
1224
# Using a cache helps in 2 ways:
1225
# 1) Avoids unnecessary decoding calls
1226
# 2) Re-uses cached strings, which helps in future set and
1228
# (2) is enough that removing encoding entirely along with
1229
# the cache (so we are using plain strings) results in no
1230
# performance improvement.
1232
revision_id = unescape_revid_cache[revision_id]
1234
unescaped = unescape(revision_id)
1235
unescape_revid_cache[revision_id] = unescaped
1236
revision_id = unescaped
1238
# Note that unconditionally unescaping means that we deserialise
1239
# every fileid, which for general 'pull' is not great, but we don't
1240
# really want to have some many fulltexts that this matters anyway.
1243
file_id = unescape_fileid_cache[file_id]
1245
unescaped = unescape(file_id)
1246
unescape_fileid_cache[file_id] = unescaped
1249
key = (file_id, revision_id)
1250
setdefault(key, False)
1251
if revision_id == version_id:
1255
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
1257
"""Helper routine for fileids_altered_by_revision_ids.
1259
This performs the translation of xml lines to revision ids.
1261
:param line_iterator: An iterator of lines, origin_version_id
1262
:param revision_ids: The revision ids to filter for. This should be a
1263
set or other type which supports efficient __contains__ lookups, as
1264
the revision id from each parsed line will be looked up in the
1265
revision_ids filter.
1266
:return: a dictionary mapping altered file-ids to an iterable of
1267
revision_ids. Each altered file-ids has the exact revision_ids that
1268
altered it listed explicitly.
1271
setdefault = result.setdefault
1272
for file_id, revision_id in \
1273
self._find_text_key_references_from_xml_inventory_lines(
1274
line_iterator).iterkeys():
1275
# once data is all ensured-consistent; then this is
1276
# if revision_id == version_id
1277
if revision_id in revision_ids:
1278
setdefault(file_id, set()).add(revision_id)
1281
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
1282
"""Find the file ids and versions affected by revisions.
1284
:param revisions: an iterable containing revision ids.
1285
:param _inv_weave: The inventory weave from this repository or None.
1286
If None, the inventory weave will be opened automatically.
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 = _inv_weave or 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
graph = self.get_graph()
1342
ancestors = graph.get_parent_map(self.all_revision_ids())
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
1450
inv_w = self.get_inventory_weave()
1452
# file ids that changed
1453
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
1455
num_file_ids = len(file_ids)
1456
for file_id, altered_versions in file_ids.iteritems():
1457
if _files_pb is not None:
1458
_files_pb.update("fetch texts", count, num_file_ids)
1460
yield ("file", file_id, altered_versions)
1461
# We're done with the files_pb. Note that it finished by the caller,
1462
# just as it was created by the caller.
1466
yield ("inventory", None, revision_ids)
1469
revisions_with_signatures = set()
1470
for rev_id in revision_ids:
1472
self.get_signature_text(rev_id)
1473
except errors.NoSuchRevision:
1477
revisions_with_signatures.add(rev_id)
1478
yield ("signatures", None, revisions_with_signatures)
1481
yield ("revisions", None, revision_ids)
1484
def get_inventory_weave(self):
1485
return self.control_weaves.get_weave('inventory',
1486
self.get_transaction())
1489
def get_inventory(self, revision_id):
1490
"""Get Inventory object by revision id."""
1491
return self.iter_inventories([revision_id]).next()
1493
def iter_inventories(self, revision_ids):
1494
"""Get many inventories by revision_ids.
1496
This will buffer some or all of the texts used in constructing the
1497
inventories in memory, but will only parse a single inventory at a
1500
:return: An iterator of inventories.
1502
if ((None in revision_ids)
1503
or (_mod_revision.NULL_REVISION in revision_ids)):
1504
raise ValueError('cannot get null revision inventory')
1505
return self._iter_inventories(revision_ids)
1507
def _iter_inventories(self, revision_ids):
1508
"""single-document based inventory iteration."""
1509
texts = self.get_inventory_weave().get_texts(revision_ids)
1510
for text, revision_id in zip(texts, revision_ids):
1511
yield self.deserialise_inventory(revision_id, text)
1513
def deserialise_inventory(self, revision_id, xml):
1514
"""Transform the xml into an inventory object.
1516
:param revision_id: The expected revision id of the inventory.
1517
:param xml: A serialised inventory.
1519
result = self._serializer.read_inventory_from_string(xml, revision_id)
1520
if result.revision_id != revision_id:
1521
raise AssertionError('revision id mismatch %s != %s' % (
1522
result.revision_id, revision_id))
1525
def serialise_inventory(self, inv):
1526
return self._serializer.write_inventory_to_string(inv)
1528
def _serialise_inventory_to_lines(self, inv):
1529
return self._serializer.write_inventory_to_lines(inv)
1531
def get_serializer_format(self):
1532
return self._serializer.format_num
1535
def get_inventory_xml(self, revision_id):
1536
"""Get inventory XML as a file object."""
1538
iw = self.get_inventory_weave()
1539
return iw.get_text(revision_id)
1541
raise errors.HistoryMissing(self, 'inventory', revision_id)
1544
def get_inventory_sha1(self, revision_id):
1545
"""Return the sha1 hash of the inventory entry
1547
return self.get_revision(revision_id).inventory_sha1
1549
def iter_reverse_revision_history(self, revision_id):
1550
"""Iterate backwards through revision ids in the lefthand history
1552
:param revision_id: The revision id to start with. All its lefthand
1553
ancestors will be traversed.
1555
graph = self.get_graph()
1556
next_id = revision_id
1558
if next_id in (None, _mod_revision.NULL_REVISION):
1561
# Note: The following line may raise KeyError in the event of
1562
# truncated history. We decided not to have a try:except:raise
1563
# RevisionNotPresent here until we see a use for it, because of the
1564
# cost in an inner loop that is by its very nature O(history).
1565
# Robert Collins 20080326
1566
parents = graph.get_parent_map([next_id])[next_id]
1567
if len(parents) == 0:
1570
next_id = parents[0]
1573
def get_revision_inventory(self, revision_id):
1574
"""Return inventory of a past revision."""
1575
# TODO: Unify this with get_inventory()
1576
# bzr 0.0.6 and later imposes the constraint that the inventory_id
1577
# must be the same as its revision, so this is trivial.
1578
if revision_id is None:
1579
# This does not make sense: if there is no revision,
1580
# then it is the current tree inventory surely ?!
1581
# and thus get_root_id() is something that looks at the last
1582
# commit on the branch, and the get_root_id is an inventory check.
1583
raise NotImplementedError
1584
# return Inventory(self.get_root_id())
1586
return self.get_inventory(revision_id)
1589
def is_shared(self):
1590
"""Return True if this repository is flagged as a shared repository."""
1591
raise NotImplementedError(self.is_shared)
1594
def reconcile(self, other=None, thorough=False):
1595
"""Reconcile this repository."""
1596
from bzrlib.reconcile import RepoReconciler
1597
reconciler = RepoReconciler(self, thorough=thorough)
1598
reconciler.reconcile()
1601
def _refresh_data(self):
1602
"""Helper called from lock_* to ensure coherency with disk.
1604
The default implementation does nothing; it is however possible
1605
for repositories to maintain loaded indices across multiple locks
1606
by checking inside their implementation of this method to see
1607
whether their indices are still valid. This depends of course on
1608
the disk format being validatable in this manner.
1612
def revision_tree(self, revision_id):
1613
"""Return Tree for a revision on this branch.
1615
`revision_id` may be None for the empty tree revision.
1617
# TODO: refactor this to use an existing revision object
1618
# so we don't need to read it in twice.
1619
if revision_id is None or revision_id == _mod_revision.NULL_REVISION:
1620
return RevisionTree(self, Inventory(root_id=None),
1621
_mod_revision.NULL_REVISION)
1623
inv = self.get_revision_inventory(revision_id)
1624
return RevisionTree(self, inv, revision_id)
1626
def revision_trees(self, revision_ids):
1627
"""Return Tree for a revision on this branch.
1629
`revision_id` may not be None or 'null:'"""
1630
inventories = self.iter_inventories(revision_ids)
1631
for inv in inventories:
1632
yield RevisionTree(self, inv, inv.revision_id)
1635
def get_ancestry(self, revision_id, topo_sorted=True):
1636
"""Return a list of revision-ids integrated by a revision.
1638
The first element of the list is always None, indicating the origin
1639
revision. This might change when we have history horizons, or
1640
perhaps we should have a new API.
1642
This is topologically sorted.
1644
if _mod_revision.is_null(revision_id):
1646
if not self.has_revision(revision_id):
1647
raise errors.NoSuchRevision(self, revision_id)
1648
w = self.get_inventory_weave()
1649
candidates = w.get_ancestry(revision_id, topo_sorted)
1650
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
1653
"""Compress the data within the repository.
1655
This operation only makes sense for some repository types. For other
1656
types it should be a no-op that just returns.
1658
This stub method does not require a lock, but subclasses should use
1659
@needs_write_lock as this is a long running call its reasonable to
1660
implicitly lock for the user.
1664
def print_file(self, file, revision_id):
1665
"""Print `file` to stdout.
1667
FIXME RBC 20060125 as John Meinel points out this is a bad api
1668
- it writes to stdout, it assumes that that is valid etc. Fix
1669
by creating a new more flexible convenience function.
1671
tree = self.revision_tree(revision_id)
1672
# use inventory as it was in that revision
1673
file_id = tree.inventory.path2id(file)
1675
# TODO: jam 20060427 Write a test for this code path
1676
# it had a bug in it, and was raising the wrong
1678
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1679
tree.print_file(file_id)
1681
def get_transaction(self):
1682
return self.control_files.get_transaction()
1684
@deprecated_method(symbol_versioning.one_five)
1685
def revision_parents(self, revision_id):
1686
return self.get_inventory_weave().parent_names(revision_id)
1688
@deprecated_method(symbol_versioning.one_one)
1689
def get_parents(self, revision_ids):
1690
"""See StackedParentsProvider.get_parents"""
1691
parent_map = self.get_parent_map(revision_ids)
1692
return [parent_map.get(r, None) for r in revision_ids]
1694
def get_parent_map(self, keys):
1695
"""See graph._StackedParentsProvider.get_parent_map"""
1697
for revision_id in keys:
1698
if revision_id == _mod_revision.NULL_REVISION:
1699
parent_map[revision_id] = ()
1702
parent_id_list = self.get_revision(revision_id).parent_ids
1703
except errors.NoSuchRevision:
1706
if len(parent_id_list) == 0:
1707
parent_ids = (_mod_revision.NULL_REVISION,)
1709
parent_ids = tuple(parent_id_list)
1710
parent_map[revision_id] = parent_ids
1713
def _make_parents_provider(self):
1716
def get_graph(self, other_repository=None):
1717
"""Return the graph walker for this repository format"""
1718
parents_provider = self._make_parents_provider()
1719
if (other_repository is not None and
1720
not self.has_same_location(other_repository)):
1721
parents_provider = graph._StackedParentsProvider(
1722
[parents_provider, other_repository._make_parents_provider()])
1723
return graph.Graph(parents_provider)
1725
def _get_versioned_file_checker(self):
1726
"""Return an object suitable for checking versioned files."""
1727
return _VersionedFileChecker(self)
1729
def revision_ids_to_search_result(self, result_set):
1730
"""Convert a set of revision ids to a graph SearchResult."""
1731
result_parents = set()
1732
for parents in self.get_graph().get_parent_map(
1733
result_set).itervalues():
1734
result_parents.update(parents)
1735
included_keys = result_set.intersection(result_parents)
1736
start_keys = result_set.difference(included_keys)
1737
exclude_keys = result_parents.difference(result_set)
1738
result = graph.SearchResult(start_keys, exclude_keys,
1739
len(result_set), result_set)
1743
def set_make_working_trees(self, new_value):
1744
"""Set the policy flag for making working trees when creating branches.
1746
This only applies to branches that use this repository.
1748
The default is 'True'.
1749
:param new_value: True to restore the default, False to disable making
1752
raise NotImplementedError(self.set_make_working_trees)
1754
def make_working_trees(self):
1755
"""Returns the policy for making working trees on new branches."""
1756
raise NotImplementedError(self.make_working_trees)
1759
def sign_revision(self, revision_id, gpg_strategy):
1760
plaintext = Testament.from_revision(self, revision_id).as_short_text()
1761
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1764
def has_signature_for_revision_id(self, revision_id):
1765
"""Query for a revision signature for revision_id in the repository."""
1766
return self._revision_store.has_signature(revision_id,
1767
self.get_transaction())
1770
def get_signature_text(self, revision_id):
1771
"""Return the text for a signature."""
1772
return self._revision_store.get_signature_text(revision_id,
1773
self.get_transaction())
1776
def check(self, revision_ids=None):
1777
"""Check consistency of all history of given revision_ids.
1779
Different repository implementations should override _check().
1781
:param revision_ids: A non-empty list of revision_ids whose ancestry
1782
will be checked. Typically the last revision_id of a branch.
1784
return self._check(revision_ids)
1786
def _check(self, revision_ids):
1787
result = check.Check(self)
1791
def _warn_if_deprecated(self):
1792
global _deprecation_warning_done
1793
if _deprecation_warning_done:
1795
_deprecation_warning_done = True
1796
warning("Format %s for %s is deprecated - please use 'bzr upgrade' to get better performance"
1797
% (self._format, self.bzrdir.transport.base))
1799
def supports_rich_root(self):
1800
return self._format.rich_root_data
1802
def _check_ascii_revisionid(self, revision_id, method):
1803
"""Private helper for ascii-only repositories."""
1804
# weave repositories refuse to store revisionids that are non-ascii.
1805
if revision_id is not None:
1806
# weaves require ascii revision ids.
1807
if isinstance(revision_id, unicode):
1809
revision_id.encode('ascii')
1810
except UnicodeEncodeError:
1811
raise errors.NonAsciiRevisionId(method, self)
1814
revision_id.decode('ascii')
1815
except UnicodeDecodeError:
1816
raise errors.NonAsciiRevisionId(method, self)
1818
def revision_graph_can_have_wrong_parents(self):
1819
"""Is it possible for this repository to have a revision graph with
1822
If True, then this repository must also implement
1823
_find_inconsistent_revision_parents so that check and reconcile can
1824
check for inconsistencies before proceeding with other checks that may
1825
depend on the revision index being consistent.
1827
raise NotImplementedError(self.revision_graph_can_have_wrong_parents)
1830
# remove these delegates a while after bzr 0.15
1831
def __make_delegated(name, from_module):
1832
def _deprecated_repository_forwarder():
1833
symbol_versioning.warn('%s moved to %s in bzr 0.15'
1834
% (name, from_module),
1837
m = __import__(from_module, globals(), locals(), [name])
1839
return getattr(m, name)
1840
except AttributeError:
1841
raise AttributeError('module %s has no name %s'
1843
globals()[name] = _deprecated_repository_forwarder
1846
'AllInOneRepository',
1847
'WeaveMetaDirRepository',
1848
'PreSplitOutRepositoryFormat',
1849
'RepositoryFormat4',
1850
'RepositoryFormat5',
1851
'RepositoryFormat6',
1852
'RepositoryFormat7',
1854
__make_delegated(_name, 'bzrlib.repofmt.weaverepo')
1858
'RepositoryFormatKnit',
1859
'RepositoryFormatKnit1',
1861
__make_delegated(_name, 'bzrlib.repofmt.knitrepo')
1864
def install_revision(repository, rev, revision_tree):
1865
"""Install all revision data into a repository."""
1866
install_revisions(repository, [(rev, revision_tree, None)])
1869
def install_revisions(repository, iterable, num_revisions=None, pb=None):
1870
"""Install all revision data into a repository.
1872
Accepts an iterable of revision, tree, signature tuples. The signature
1875
repository.start_write_group()
1877
for n, (revision, revision_tree, signature) in enumerate(iterable):
1878
_install_revision(repository, revision, revision_tree, signature)
1880
pb.update('Transferring revisions', n + 1, num_revisions)
1882
repository.abort_write_group()
1885
repository.commit_write_group()
1888
def _install_revision(repository, rev, revision_tree, signature):
1889
"""Install all revision data into a repository."""
1890
present_parents = []
1892
for p_id in rev.parent_ids:
1893
if repository.has_revision(p_id):
1894
present_parents.append(p_id)
1895
parent_trees[p_id] = repository.revision_tree(p_id)
1897
parent_trees[p_id] = repository.revision_tree(None)
1899
inv = revision_tree.inventory
1900
entries = inv.iter_entries()
1901
# backwards compatibility hack: skip the root id.
1902
if not repository.supports_rich_root():
1903
path, root = entries.next()
1904
if root.revision != rev.revision_id:
1905
raise errors.IncompatibleRevision(repr(repository))
1906
# Add the texts that are not already present
1907
for path, ie in entries:
1908
w = repository.weave_store.get_weave_or_empty(ie.file_id,
1909
repository.get_transaction())
1910
if ie.revision not in w:
1912
# FIXME: TODO: The following loop *may* be overlapping/duplicate
1913
# with InventoryEntry.find_previous_heads(). if it is, then there
1914
# is a latent bug here where the parents may have ancestors of each
1916
for revision, tree in parent_trees.iteritems():
1917
if ie.file_id not in tree:
1919
parent_id = tree.inventory[ie.file_id].revision
1920
if parent_id in text_parents:
1922
text_parents.append(parent_id)
1924
vfile = repository.weave_store.get_weave_or_empty(ie.file_id,
1925
repository.get_transaction())
1926
lines = revision_tree.get_file(ie.file_id).readlines()
1927
vfile.add_lines(rev.revision_id, text_parents, lines)
1929
# install the inventory
1930
repository.add_inventory(rev.revision_id, inv, present_parents)
1931
except errors.RevisionAlreadyPresent:
1933
if signature is not None:
1934
repository.add_signature_text(rev.revision_id, signature)
1935
repository.add_revision(rev.revision_id, rev, inv)
1938
class MetaDirRepository(Repository):
1939
"""Repositories in the new meta-dir layout."""
1941
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1942
super(MetaDirRepository, self).__init__(_format,
1948
dir_mode = self.control_files._dir_mode
1949
file_mode = self.control_files._file_mode
1952
def is_shared(self):
1953
"""Return True if this repository is flagged as a shared repository."""
1954
return self.control_files._transport.has('shared-storage')
1957
def set_make_working_trees(self, new_value):
1958
"""Set the policy flag for making working trees when creating branches.
1960
This only applies to branches that use this repository.
1962
The default is 'True'.
1963
:param new_value: True to restore the default, False to disable making
1968
self.control_files._transport.delete('no-working-trees')
1969
except errors.NoSuchFile:
1972
self.control_files.put_utf8('no-working-trees', '')
1974
def make_working_trees(self):
1975
"""Returns the policy for making working trees on new branches."""
1976
return not self.control_files._transport.has('no-working-trees')
1979
class MetaDirVersionedFileRepository(MetaDirRepository):
1980
"""Repositories in a meta-dir, that work via versioned file objects."""
1982
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1983
super(MetaDirVersionedFileRepository, self).__init__(_format, a_bzrdir,
1984
control_files, _revision_store, control_store, text_store)
1985
_revision_store.get_scope = self.get_transaction
1986
control_store.get_scope = self.get_transaction
1987
text_store.get_scope = self.get_transaction
1990
class RepositoryFormatRegistry(registry.Registry):
1991
"""Registry of RepositoryFormats."""
1993
def get(self, format_string):
1994
r = registry.Registry.get(self, format_string)
2000
format_registry = RepositoryFormatRegistry()
2001
"""Registry of formats, indexed by their identifying format string.
2003
This can contain either format instances themselves, or classes/factories that
2004
can be called to obtain one.
2008
#####################################################################
2009
# Repository Formats
2011
class RepositoryFormat(object):
2012
"""A repository format.
2014
Formats provide three things:
2015
* An initialization routine to construct repository data on disk.
2016
* a format string which is used when the BzrDir supports versioned
2018
* an open routine which returns a Repository instance.
2020
There is one and only one Format subclass for each on-disk format. But
2021
there can be one Repository subclass that is used for several different
2022
formats. The _format attribute on a Repository instance can be used to
2023
determine the disk format.
2025
Formats are placed in an dict by their format string for reference
2026
during opening. These should be subclasses of RepositoryFormat
2029
Once a format is deprecated, just deprecate the initialize and open
2030
methods on the format class. Do not deprecate the object, as the
2031
object will be created every system load.
2033
Common instance attributes:
2034
_matchingbzrdir - the bzrdir format that the repository format was
2035
originally written to work with. This can be used if manually
2036
constructing a bzrdir and repository, or more commonly for test suite
2040
# Set to True or False in derived classes. True indicates that the format
2041
# supports ghosts gracefully.
2042
supports_ghosts = None
2043
# Can this repository be given external locations to lookup additional
2044
# data. Set to True or False in derived classes.
2045
supports_external_lookups = None
2048
return "<%s>" % self.__class__.__name__
2050
def __eq__(self, other):
2051
# format objects are generally stateless
2052
return isinstance(other, self.__class__)
2054
def __ne__(self, other):
2055
return not self == other
2058
def find_format(klass, a_bzrdir):
2059
"""Return the format for the repository object in a_bzrdir.
2061
This is used by bzr native formats that have a "format" file in
2062
the repository. Other methods may be used by different types of
2066
transport = a_bzrdir.get_repository_transport(None)
2067
format_string = transport.get("format").read()
2068
return format_registry.get(format_string)
2069
except errors.NoSuchFile:
2070
raise errors.NoRepositoryPresent(a_bzrdir)
2072
raise errors.UnknownFormatError(format=format_string,
2076
def register_format(klass, format):
2077
format_registry.register(format.get_format_string(), format)
2080
def unregister_format(klass, format):
2081
format_registry.remove(format.get_format_string())
2084
def get_default_format(klass):
2085
"""Return the current default format."""
2086
from bzrlib import bzrdir
2087
return bzrdir.format_registry.make_bzrdir('default').repository_format
2089
def _get_control_store(self, repo_transport, control_files):
2090
"""Return the control store for this repository."""
2091
raise NotImplementedError(self._get_control_store)
2093
def get_format_string(self):
2094
"""Return the ASCII format string that identifies this format.
2096
Note that in pre format ?? repositories the format string is
2097
not permitted nor written to disk.
2099
raise NotImplementedError(self.get_format_string)
2101
def get_format_description(self):
2102
"""Return the short description for this format."""
2103
raise NotImplementedError(self.get_format_description)
2105
def _get_revision_store(self, repo_transport, control_files):
2106
"""Return the revision store object for this a_bzrdir."""
2107
raise NotImplementedError(self._get_revision_store)
2109
def _get_text_rev_store(self,
2116
"""Common logic for getting a revision store for a repository.
2118
see self._get_revision_store for the subclass-overridable method to
2119
get the store for a repository.
2121
from bzrlib.store.revision.text import TextRevisionStore
2122
dir_mode = control_files._dir_mode
2123
file_mode = control_files._file_mode
2124
text_store = TextStore(transport.clone(name),
2126
compressed=compressed,
2128
file_mode=file_mode)
2129
_revision_store = TextRevisionStore(text_store, serializer)
2130
return _revision_store
2132
# TODO: this shouldn't be in the base class, it's specific to things that
2133
# use weaves or knits -- mbp 20070207
2134
def _get_versioned_file_store(self,
2139
versionedfile_class=None,
2140
versionedfile_kwargs={},
2142
if versionedfile_class is None:
2143
versionedfile_class = self._versionedfile_class
2144
weave_transport = control_files._transport.clone(name)
2145
dir_mode = control_files._dir_mode
2146
file_mode = control_files._file_mode
2147
return VersionedFileStore(weave_transport, prefixed=prefixed,
2149
file_mode=file_mode,
2150
versionedfile_class=versionedfile_class,
2151
versionedfile_kwargs=versionedfile_kwargs,
2154
def initialize(self, a_bzrdir, shared=False):
2155
"""Initialize a repository of this format in a_bzrdir.
2157
:param a_bzrdir: The bzrdir to put the new repository in it.
2158
:param shared: The repository should be initialized as a sharable one.
2159
:returns: The new repository object.
2161
This may raise UninitializableFormat if shared repository are not
2162
compatible the a_bzrdir.
2164
raise NotImplementedError(self.initialize)
2166
def is_supported(self):
2167
"""Is this format supported?
2169
Supported formats must be initializable and openable.
2170
Unsupported formats may not support initialization or committing or
2171
some other features depending on the reason for not being supported.
2175
def check_conversion_target(self, target_format):
2176
raise NotImplementedError(self.check_conversion_target)
2178
def open(self, a_bzrdir, _found=False):
2179
"""Return an instance of this format for the bzrdir a_bzrdir.
2181
_found is a private parameter, do not use it.
2183
raise NotImplementedError(self.open)
2186
class MetaDirRepositoryFormat(RepositoryFormat):
2187
"""Common base class for the new repositories using the metadir layout."""
2189
rich_root_data = False
2190
supports_tree_reference = False
2191
supports_external_lookups = False
2192
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2195
super(MetaDirRepositoryFormat, self).__init__()
2197
def _create_control_files(self, a_bzrdir):
2198
"""Create the required files and the initial control_files object."""
2199
# FIXME: RBC 20060125 don't peek under the covers
2200
# NB: no need to escape relative paths that are url safe.
2201
repository_transport = a_bzrdir.get_repository_transport(self)
2202
control_files = lockable_files.LockableFiles(repository_transport,
2203
'lock', lockdir.LockDir)
2204
control_files.create_lock()
2205
return control_files
2207
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
2208
"""Upload the initial blank content."""
2209
control_files = self._create_control_files(a_bzrdir)
2210
control_files.lock_write()
2212
control_files._transport.mkdir_multi(dirs,
2213
mode=control_files._dir_mode)
2214
for file, content in files:
2215
control_files.put(file, content)
2216
for file, content in utf8_files:
2217
control_files.put_utf8(file, content)
2219
control_files.put_utf8('shared-storage', '')
2221
control_files.unlock()
2224
# formats which have no format string are not discoverable
2225
# and not independently creatable, so are not registered. They're
2226
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
2227
# needed, it's constructed directly by the BzrDir. Non-native formats where
2228
# the repository is not separately opened are similar.
2230
format_registry.register_lazy(
2231
'Bazaar-NG Repository format 7',
2232
'bzrlib.repofmt.weaverepo',
2236
format_registry.register_lazy(
2237
'Bazaar-NG Knit Repository Format 1',
2238
'bzrlib.repofmt.knitrepo',
2239
'RepositoryFormatKnit1',
2242
format_registry.register_lazy(
2243
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
2244
'bzrlib.repofmt.knitrepo',
2245
'RepositoryFormatKnit3',
2248
format_registry.register_lazy(
2249
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
2250
'bzrlib.repofmt.knitrepo',
2251
'RepositoryFormatKnit4',
2254
# Pack-based formats. There is one format for pre-subtrees, and one for
2255
# post-subtrees to allow ease of testing.
2256
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
2257
format_registry.register_lazy(
2258
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
2259
'bzrlib.repofmt.pack_repo',
2260
'RepositoryFormatKnitPack1',
2262
format_registry.register_lazy(
2263
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
2264
'bzrlib.repofmt.pack_repo',
2265
'RepositoryFormatKnitPack3',
2267
format_registry.register_lazy(
2268
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
2269
'bzrlib.repofmt.pack_repo',
2270
'RepositoryFormatKnitPack4',
2272
# Development formats.
2274
# development 0 - stub to introduce development versioning scheme.
2275
format_registry.register_lazy(
2276
"Bazaar development format 0 (needs bzr.dev from before 1.3)\n",
2277
'bzrlib.repofmt.pack_repo',
2278
'RepositoryFormatPackDevelopment0',
2280
format_registry.register_lazy(
2281
("Bazaar development format 0 with subtree support "
2282
"(needs bzr.dev from before 1.3)\n"),
2283
'bzrlib.repofmt.pack_repo',
2284
'RepositoryFormatPackDevelopment0Subtree',
2286
# 1.3->1.4 go below here
2289
class InterRepository(InterObject):
2290
"""This class represents operations taking place between two repositories.
2292
Its instances have methods like copy_content and fetch, and contain
2293
references to the source and target repositories these operations can be
2296
Often we will provide convenience methods on 'repository' which carry out
2297
operations with another repository - they will always forward to
2298
InterRepository.get(other).method_name(parameters).
2302
"""The available optimised InterRepository types."""
2304
def copy_content(self, revision_id=None):
2305
raise NotImplementedError(self.copy_content)
2307
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2308
"""Fetch the content required to construct revision_id.
2310
The content is copied from self.source to self.target.
2312
:param revision_id: if None all content is copied, if NULL_REVISION no
2314
:param pb: optional progress bar to use for progress reports. If not
2315
provided a default one will be created.
2317
Returns the copied revision count and the failed revisions in a tuple:
2320
raise NotImplementedError(self.fetch)
2322
def _walk_to_common_revisions(self, revision_ids):
2323
"""Walk out from revision_ids in source to revisions target has.
2325
:param revision_ids: The start point for the search.
2326
:return: A set of revision ids.
2328
target_graph = self.target.get_graph()
2329
revision_ids = frozenset(revision_ids)
2330
if set(target_graph.get_parent_map(revision_ids)) == revision_ids:
2331
return graph.SearchResult(revision_ids, set(), 0, set())
2332
missing_revs = set()
2333
source_graph = self.source.get_graph()
2334
# ensure we don't pay silly lookup costs.
2335
searcher = source_graph._make_breadth_first_searcher(revision_ids)
2336
null_set = frozenset([_mod_revision.NULL_REVISION])
2339
next_revs, ghosts = searcher.next_with_ghosts()
2340
except StopIteration:
2342
if revision_ids.intersection(ghosts):
2343
absent_ids = set(revision_ids.intersection(ghosts))
2344
# If all absent_ids are present in target, no error is needed.
2345
absent_ids.difference_update(
2346
set(target_graph.get_parent_map(absent_ids)))
2348
raise errors.NoSuchRevision(self.source, absent_ids.pop())
2349
# we don't care about other ghosts as we can't fetch them and
2350
# haven't been asked to.
2351
next_revs = set(next_revs)
2352
# we always have NULL_REVISION present.
2353
have_revs = set(target_graph.get_parent_map(next_revs)).union(null_set)
2354
missing_revs.update(next_revs - have_revs)
2355
searcher.stop_searching_any(have_revs)
2356
return searcher.get_result()
2358
@deprecated_method(symbol_versioning.one_two)
2360
def missing_revision_ids(self, revision_id=None, find_ghosts=True):
2361
"""Return the revision ids that source has that target does not.
2363
These are returned in topological order.
2365
:param revision_id: only return revision ids included by this
2367
:param find_ghosts: If True find missing revisions in deep history
2368
rather than just finding the surface difference.
2370
return list(self.search_missing_revision_ids(
2371
revision_id, find_ghosts).get_keys())
2374
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2375
"""Return the revision ids that source has that target does not.
2377
:param revision_id: only return revision ids included by this
2379
:param find_ghosts: If True find missing revisions in deep history
2380
rather than just finding the surface difference.
2381
:return: A bzrlib.graph.SearchResult.
2383
# stop searching at found target revisions.
2384
if not find_ghosts and revision_id is not None:
2385
return self._walk_to_common_revisions([revision_id])
2386
# generic, possibly worst case, slow code path.
2387
target_ids = set(self.target.all_revision_ids())
2388
if revision_id is not None:
2389
source_ids = self.source.get_ancestry(revision_id)
2390
if source_ids[0] is not None:
2391
raise AssertionError()
2394
source_ids = self.source.all_revision_ids()
2395
result_set = set(source_ids).difference(target_ids)
2396
return self.source.revision_ids_to_search_result(result_set)
2399
def _same_model(source, target):
2400
"""True if source and target have the same data representation."""
2401
if source.supports_rich_root() != target.supports_rich_root():
2403
if source._serializer != target._serializer:
2408
class InterSameDataRepository(InterRepository):
2409
"""Code for converting between repositories that represent the same data.
2411
Data format and model must match for this to work.
2415
def _get_repo_format_to_test(self):
2416
"""Repository format for testing with.
2418
InterSameData can pull from subtree to subtree and from non-subtree to
2419
non-subtree, so we test this with the richest repository format.
2421
from bzrlib.repofmt import knitrepo
2422
return knitrepo.RepositoryFormatKnit3()
2425
def is_compatible(source, target):
2426
return InterRepository._same_model(source, target)
2429
def copy_content(self, revision_id=None):
2430
"""Make a complete copy of the content in self into destination.
2432
This copies both the repository's revision data, and configuration information
2433
such as the make_working_trees setting.
2435
This is a destructive operation! Do not use it on existing
2438
:param revision_id: Only copy the content needed to construct
2439
revision_id and its parents.
2442
self.target.set_make_working_trees(self.source.make_working_trees())
2443
except NotImplementedError:
2445
# but don't bother fetching if we have the needed data now.
2446
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2447
self.target.has_revision(revision_id)):
2449
self.target.fetch(self.source, revision_id=revision_id)
2452
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2453
"""See InterRepository.fetch()."""
2454
from bzrlib.fetch import GenericRepoFetcher
2455
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2456
self.source, self.source._format, self.target,
2457
self.target._format)
2458
f = GenericRepoFetcher(to_repository=self.target,
2459
from_repository=self.source,
2460
last_revision=revision_id,
2461
pb=pb, find_ghosts=find_ghosts)
2462
return f.count_copied, f.failed_revisions
2465
class InterWeaveRepo(InterSameDataRepository):
2466
"""Optimised code paths between Weave based repositories.
2468
This should be in bzrlib/repofmt/weaverepo.py but we have not yet
2469
implemented lazy inter-object optimisation.
2473
def _get_repo_format_to_test(self):
2474
from bzrlib.repofmt import weaverepo
2475
return weaverepo.RepositoryFormat7()
2478
def is_compatible(source, target):
2479
"""Be compatible with known Weave formats.
2481
We don't test for the stores being of specific types because that
2482
could lead to confusing results, and there is no need to be
2485
from bzrlib.repofmt.weaverepo import (
2491
return (isinstance(source._format, (RepositoryFormat5,
2493
RepositoryFormat7)) and
2494
isinstance(target._format, (RepositoryFormat5,
2496
RepositoryFormat7)))
2497
except AttributeError:
2501
def copy_content(self, revision_id=None):
2502
"""See InterRepository.copy_content()."""
2503
# weave specific optimised path:
2505
self.target.set_make_working_trees(self.source.make_working_trees())
2506
except (errors.RepositoryUpgradeRequired, NotImplemented):
2508
# FIXME do not peek!
2509
if self.source.control_files._transport.listable():
2510
pb = ui.ui_factory.nested_progress_bar()
2512
self.target.weave_store.copy_all_ids(
2513
self.source.weave_store,
2515
from_transaction=self.source.get_transaction(),
2516
to_transaction=self.target.get_transaction())
2517
pb.update('copying inventory', 0, 1)
2518
self.target.control_weaves.copy_multi(
2519
self.source.control_weaves, ['inventory'],
2520
from_transaction=self.source.get_transaction(),
2521
to_transaction=self.target.get_transaction())
2522
self.target._revision_store.text_store.copy_all_ids(
2523
self.source._revision_store.text_store,
2528
self.target.fetch(self.source, revision_id=revision_id)
2531
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2532
"""See InterRepository.fetch()."""
2533
from bzrlib.fetch import GenericRepoFetcher
2534
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2535
self.source, self.source._format, self.target, self.target._format)
2536
f = GenericRepoFetcher(to_repository=self.target,
2537
from_repository=self.source,
2538
last_revision=revision_id,
2539
pb=pb, find_ghosts=find_ghosts)
2540
return f.count_copied, f.failed_revisions
2543
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2544
"""See InterRepository.missing_revision_ids()."""
2545
# we want all revisions to satisfy revision_id in source.
2546
# but we don't want to stat every file here and there.
2547
# we want then, all revisions other needs to satisfy revision_id
2548
# checked, but not those that we have locally.
2549
# so the first thing is to get a subset of the revisions to
2550
# satisfy revision_id in source, and then eliminate those that
2551
# we do already have.
2552
# this is slow on high latency connection to self, but as as this
2553
# disk format scales terribly for push anyway due to rewriting
2554
# inventory.weave, this is considered acceptable.
2556
if revision_id is not None:
2557
source_ids = self.source.get_ancestry(revision_id)
2558
if source_ids[0] is not None:
2559
raise AssertionError()
2562
source_ids = self.source._all_possible_ids()
2563
source_ids_set = set(source_ids)
2564
# source_ids is the worst possible case we may need to pull.
2565
# now we want to filter source_ids against what we actually
2566
# have in target, but don't try to check for existence where we know
2567
# we do not have a revision as that would be pointless.
2568
target_ids = set(self.target._all_possible_ids())
2569
possibly_present_revisions = target_ids.intersection(source_ids_set)
2570
actually_present_revisions = set(
2571
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2572
required_revisions = source_ids_set.difference(actually_present_revisions)
2573
if revision_id is not None:
2574
# we used get_ancestry to determine source_ids then we are assured all
2575
# revisions referenced are present as they are installed in topological order.
2576
# and the tip revision was validated by get_ancestry.
2577
result_set = required_revisions
2579
# if we just grabbed the possibly available ids, then
2580
# we only have an estimate of whats available and need to validate
2581
# that against the revision records.
2583
self.source._eliminate_revisions_not_present(required_revisions))
2584
return self.source.revision_ids_to_search_result(result_set)
2587
class InterKnitRepo(InterSameDataRepository):
2588
"""Optimised code paths between Knit based repositories."""
2591
def _get_repo_format_to_test(self):
2592
from bzrlib.repofmt import knitrepo
2593
return knitrepo.RepositoryFormatKnit1()
2596
def is_compatible(source, target):
2597
"""Be compatible with known Knit formats.
2599
We don't test for the stores being of specific types because that
2600
could lead to confusing results, and there is no need to be
2603
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
2605
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
2606
isinstance(target._format, RepositoryFormatKnit))
2607
except AttributeError:
2609
return are_knits and InterRepository._same_model(source, target)
2612
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2613
"""See InterRepository.fetch()."""
2614
from bzrlib.fetch import KnitRepoFetcher
2615
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2616
self.source, self.source._format, self.target, self.target._format)
2617
f = KnitRepoFetcher(to_repository=self.target,
2618
from_repository=self.source,
2619
last_revision=revision_id,
2620
pb=pb, find_ghosts=find_ghosts)
2621
return f.count_copied, f.failed_revisions
2624
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2625
"""See InterRepository.missing_revision_ids()."""
2626
if revision_id is not None:
2627
source_ids = self.source.get_ancestry(revision_id)
2628
if source_ids[0] is not None:
2629
raise AssertionError()
2632
source_ids = self.source.all_revision_ids()
2633
source_ids_set = set(source_ids)
2634
# source_ids is the worst possible case we may need to pull.
2635
# now we want to filter source_ids against what we actually
2636
# have in target, but don't try to check for existence where we know
2637
# we do not have a revision as that would be pointless.
2638
target_ids = set(self.target.all_revision_ids())
2639
possibly_present_revisions = target_ids.intersection(source_ids_set)
2640
actually_present_revisions = set(
2641
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2642
required_revisions = source_ids_set.difference(actually_present_revisions)
2643
if revision_id is not None:
2644
# we used get_ancestry to determine source_ids then we are assured all
2645
# revisions referenced are present as they are installed in topological order.
2646
# and the tip revision was validated by get_ancestry.
2647
result_set = required_revisions
2649
# if we just grabbed the possibly available ids, then
2650
# we only have an estimate of whats available and need to validate
2651
# that against the revision records.
2653
self.source._eliminate_revisions_not_present(required_revisions))
2654
return self.source.revision_ids_to_search_result(result_set)
2657
class InterPackRepo(InterSameDataRepository):
2658
"""Optimised code paths between Pack based repositories."""
2661
def _get_repo_format_to_test(self):
2662
from bzrlib.repofmt import pack_repo
2663
return pack_repo.RepositoryFormatKnitPack1()
2666
def is_compatible(source, target):
2667
"""Be compatible with known Pack formats.
2669
We don't test for the stores being of specific types because that
2670
could lead to confusing results, and there is no need to be
2673
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2675
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2676
isinstance(target._format, RepositoryFormatPack))
2677
except AttributeError:
2679
return are_packs and InterRepository._same_model(source, target)
2682
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2683
"""See InterRepository.fetch()."""
2684
from bzrlib.repofmt.pack_repo import Packer
2685
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2686
self.source, self.source._format, self.target, self.target._format)
2687
self.count_copied = 0
2688
if revision_id is None:
2690
# everything to do - use pack logic
2691
# to fetch from all packs to one without
2692
# inventory parsing etc, IFF nothing to be copied is in the target.
2694
revision_ids = self.source.all_revision_ids()
2695
revision_keys = [(revid,) for revid in revision_ids]
2696
index = self.target._pack_collection.revision_index.combined_index
2697
present_revision_ids = set(item[1][0] for item in
2698
index.iter_entries(revision_keys))
2699
revision_ids = set(revision_ids) - present_revision_ids
2700
# implementing the TODO will involve:
2701
# - detecting when all of a pack is selected
2702
# - avoiding as much as possible pre-selection, so the
2703
# more-core routines such as create_pack_from_packs can filter in
2704
# a just-in-time fashion. (though having a HEADS list on a
2705
# repository might make this a lot easier, because we could
2706
# sensibly detect 'new revisions' without doing a full index scan.
2707
elif _mod_revision.is_null(revision_id):
2712
revision_ids = self.search_missing_revision_ids(revision_id,
2713
find_ghosts=find_ghosts).get_keys()
2714
except errors.NoSuchRevision:
2715
raise errors.InstallFailed([revision_id])
2716
if len(revision_ids) == 0:
2718
packs = self.source._pack_collection.all_packs()
2719
pack = Packer(self.target._pack_collection, packs, '.fetch',
2720
revision_ids).pack()
2721
if pack is not None:
2722
self.target._pack_collection._save_pack_names()
2723
# Trigger an autopack. This may duplicate effort as we've just done
2724
# a pack creation, but for now it is simpler to think about as
2725
# 'upload data, then repack if needed'.
2726
self.target._pack_collection.autopack()
2727
return (pack.get_revision_count(), [])
2732
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2733
"""See InterRepository.missing_revision_ids().
2735
:param find_ghosts: Find ghosts throughout the ancestry of
2738
if not find_ghosts and revision_id is not None:
2739
return self._walk_to_common_revisions([revision_id])
2740
elif revision_id is not None:
2741
source_ids = self.source.get_ancestry(revision_id)
2742
if source_ids[0] is not None:
2743
raise AssertionError()
2746
source_ids = self.source.all_revision_ids()
2747
# source_ids is the worst possible case we may need to pull.
2748
# now we want to filter source_ids against what we actually
2749
# have in target, but don't try to check for existence where we know
2750
# we do not have a revision as that would be pointless.
2751
target_ids = set(self.target.all_revision_ids())
2752
result_set = set(source_ids).difference(target_ids)
2753
return self.source.revision_ids_to_search_result(result_set)
2756
class InterModel1and2(InterRepository):
2759
def _get_repo_format_to_test(self):
2763
def is_compatible(source, target):
2764
if not source.supports_rich_root() and target.supports_rich_root():
2770
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2771
"""See InterRepository.fetch()."""
2772
from bzrlib.fetch import Model1toKnit2Fetcher
2773
f = Model1toKnit2Fetcher(to_repository=self.target,
2774
from_repository=self.source,
2775
last_revision=revision_id,
2776
pb=pb, find_ghosts=find_ghosts)
2777
return f.count_copied, f.failed_revisions
2780
def copy_content(self, revision_id=None):
2781
"""Make a complete copy of the content in self into destination.
2783
This is a destructive operation! Do not use it on existing
2786
:param revision_id: Only copy the content needed to construct
2787
revision_id and its parents.
2790
self.target.set_make_working_trees(self.source.make_working_trees())
2791
except NotImplementedError:
2793
# but don't bother fetching if we have the needed data now.
2794
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2795
self.target.has_revision(revision_id)):
2797
self.target.fetch(self.source, revision_id=revision_id)
2800
class InterKnit1and2(InterKnitRepo):
2803
def _get_repo_format_to_test(self):
2807
def is_compatible(source, target):
2808
"""Be compatible with Knit1 source and Knit3 target"""
2809
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit3
2811
from bzrlib.repofmt.knitrepo import (RepositoryFormatKnit1,
2812
RepositoryFormatKnit3)
2813
from bzrlib.repofmt.pack_repo import (
2814
RepositoryFormatKnitPack1,
2815
RepositoryFormatKnitPack3,
2816
RepositoryFormatPackDevelopment0,
2817
RepositoryFormatPackDevelopment0Subtree,
2820
RepositoryFormatKnit1,
2821
RepositoryFormatKnitPack1,
2822
RepositoryFormatPackDevelopment0,
2825
RepositoryFormatKnit3,
2826
RepositoryFormatKnitPack3,
2827
RepositoryFormatPackDevelopment0Subtree,
2829
return (isinstance(source._format, nosubtrees) and
2830
isinstance(target._format, subtrees))
2831
except AttributeError:
2835
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2836
"""See InterRepository.fetch()."""
2837
from bzrlib.fetch import Knit1to2Fetcher
2838
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2839
self.source, self.source._format, self.target,
2840
self.target._format)
2841
f = Knit1to2Fetcher(to_repository=self.target,
2842
from_repository=self.source,
2843
last_revision=revision_id,
2844
pb=pb, find_ghosts=find_ghosts)
2845
return f.count_copied, f.failed_revisions
2848
class InterDifferingSerializer(InterKnitRepo):
2851
def _get_repo_format_to_test(self):
2855
def is_compatible(source, target):
2856
"""Be compatible with Knit2 source and Knit3 target"""
2857
if source.supports_rich_root() != target.supports_rich_root():
2859
# Ideally, we'd support fetching if the source had no tree references
2860
# even if it supported them...
2861
if (getattr(source, '_format.supports_tree_reference', False) and
2862
not getattr(target, '_format.supports_tree_reference', False)):
2867
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2868
"""See InterRepository.fetch()."""
2869
revision_ids = self.target.search_missing_revision_ids(self.source,
2870
revision_id, find_ghosts=find_ghosts).get_keys()
2871
revision_ids = tsort.topo_sort(
2872
self.source.get_graph().get_parent_map(revision_ids))
2873
def revisions_iterator():
2874
for current_revision_id in revision_ids:
2875
revision = self.source.get_revision(current_revision_id)
2876
tree = self.source.revision_tree(current_revision_id)
2878
signature = self.source.get_signature_text(
2879
current_revision_id)
2880
except errors.NoSuchRevision:
2882
yield revision, tree, signature
2884
my_pb = ui.ui_factory.nested_progress_bar()
2889
install_revisions(self.target, revisions_iterator(),
2890
len(revision_ids), pb)
2892
if my_pb is not None:
2894
return len(revision_ids), 0
2897
class InterRemoteToOther(InterRepository):
2899
def __init__(self, source, target):
2900
InterRepository.__init__(self, source, target)
2901
self._real_inter = None
2904
def is_compatible(source, target):
2905
if not isinstance(source, remote.RemoteRepository):
2907
# Is source's model compatible with target's model?
2908
source._ensure_real()
2909
real_source = source._real_repository
2910
if isinstance(real_source, remote.RemoteRepository):
2911
raise NotImplementedError(
2912
"We don't support remote repos backed by remote repos yet.")
2913
return InterRepository._same_model(real_source, target)
2916
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2917
"""See InterRepository.fetch()."""
2918
from bzrlib.fetch import RemoteToOtherFetcher
2919
mutter("Using fetch logic to copy between %s(remote) and %s(%s)",
2920
self.source, self.target, self.target._format)
2921
# TODO: jam 20070210 This should be an assert, not a translate
2922
revision_id = osutils.safe_revision_id(revision_id)
2923
f = RemoteToOtherFetcher(to_repository=self.target,
2924
from_repository=self.source,
2925
last_revision=revision_id,
2926
pb=pb, find_ghosts=find_ghosts)
2927
return f.count_copied, f.failed_revisions
2930
def _get_repo_format_to_test(self):
2934
class InterOtherToRemote(InterRepository):
2936
def __init__(self, source, target):
2937
InterRepository.__init__(self, source, target)
2938
self._real_inter = None
2941
def is_compatible(source, target):
2942
if isinstance(target, remote.RemoteRepository):
2946
def _ensure_real_inter(self):
2947
if self._real_inter is None:
2948
self.target._ensure_real()
2949
real_target = self.target._real_repository
2950
self._real_inter = InterRepository.get(self.source, real_target)
2952
def copy_content(self, revision_id=None):
2953
self._ensure_real_inter()
2954
self._real_inter.copy_content(revision_id=revision_id)
2956
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2957
self._ensure_real_inter()
2958
self._real_inter.fetch(revision_id=revision_id, pb=pb,
2959
find_ghosts=find_ghosts)
2962
def _get_repo_format_to_test(self):
2966
InterRepository.register_optimiser(InterDifferingSerializer)
2967
InterRepository.register_optimiser(InterSameDataRepository)
2968
InterRepository.register_optimiser(InterWeaveRepo)
2969
InterRepository.register_optimiser(InterKnitRepo)
2970
InterRepository.register_optimiser(InterModel1and2)
2971
InterRepository.register_optimiser(InterKnit1and2)
2972
InterRepository.register_optimiser(InterPackRepo)
2973
InterRepository.register_optimiser(InterRemoteToOther)
2974
InterRepository.register_optimiser(InterOtherToRemote)
2977
class CopyConverter(object):
2978
"""A repository conversion tool which just performs a copy of the content.
2980
This is slow but quite reliable.
2983
def __init__(self, target_format):
2984
"""Create a CopyConverter.
2986
:param target_format: The format the resulting repository should be.
2988
self.target_format = target_format
2990
def convert(self, repo, pb):
2991
"""Perform the conversion of to_convert, giving feedback via pb.
2993
:param to_convert: The disk object to convert.
2994
:param pb: a progress bar to use for progress information.
2999
# this is only useful with metadir layouts - separated repo content.
3000
# trigger an assertion if not such
3001
repo._format.get_format_string()
3002
self.repo_dir = repo.bzrdir
3003
self.step('Moving repository to repository.backup')
3004
self.repo_dir.transport.move('repository', 'repository.backup')
3005
backup_transport = self.repo_dir.transport.clone('repository.backup')
3006
repo._format.check_conversion_target(self.target_format)
3007
self.source_repo = repo._format.open(self.repo_dir,
3009
_override_transport=backup_transport)
3010
self.step('Creating new repository')
3011
converted = self.target_format.initialize(self.repo_dir,
3012
self.source_repo.is_shared())
3013
converted.lock_write()
3015
self.step('Copying content into repository.')
3016
self.source_repo.copy_content_into(converted)
3019
self.step('Deleting old repository content.')
3020
self.repo_dir.transport.delete_tree('repository.backup')
3021
self.pb.note('repository converted')
3023
def step(self, message):
3024
"""Update the pb by a step."""
3026
self.pb.update(message, self.count, self.total)
3038
def _unescaper(match, _map=_unescape_map):
3039
code = match.group(1)
3043
if not code.startswith('#'):
3045
return unichr(int(code[1:])).encode('utf8')
3051
def _unescape_xml(data):
3052
"""Unescape predefined XML entities in a string of data."""
3054
if _unescape_re is None:
3055
_unescape_re = re.compile('\&([^;]*);')
3056
return _unescape_re.sub(_unescaper, data)
3059
class _VersionedFileChecker(object):
3061
def __init__(self, repository):
3062
self.repository = repository
3063
self.text_index = self.repository._generate_text_key_index()
3065
def calculate_file_version_parents(self, revision_id, file_id):
3066
"""Calculate the correct parents for a file version according to
3069
parent_keys = self.text_index[(file_id, revision_id)]
3070
if parent_keys == [_mod_revision.NULL_REVISION]:
3072
# strip the file_id, for the weave api
3073
return tuple([revision_id for file_id, revision_id in parent_keys])
3075
def check_file_version_parents(self, weave, file_id):
3076
"""Check the parents stored in a versioned file are correct.
3078
It also detects file versions that are not referenced by their
3079
corresponding revision's inventory.
3081
:returns: A tuple of (wrong_parents, dangling_file_versions).
3082
wrong_parents is a dict mapping {revision_id: (stored_parents,
3083
correct_parents)} for each revision_id where the stored parents
3084
are not correct. dangling_file_versions is a set of (file_id,
3085
revision_id) tuples for versions that are present in this versioned
3086
file, but not used by the corresponding inventory.
3089
unused_versions = set()
3090
versions = weave.versions()
3091
parent_map = weave.get_parent_map(versions)
3092
for num, revision_id in enumerate(versions):
3094
correct_parents = self.calculate_file_version_parents(
3095
revision_id, file_id)
3097
# The version is not part of the used keys.
3098
unused_versions.add(revision_id)
3101
knit_parents = tuple(parent_map[revision_id])
3102
except errors.RevisionNotPresent:
3104
if correct_parents != knit_parents:
3105
wrong_parents[revision_id] = (knit_parents, correct_parents)
3106
return wrong_parents, unused_versions
3109
def _old_get_graph(repository, revision_id):
3110
"""DO NOT USE. That is all. I'm serious."""
3111
graph = repository.get_graph()
3112
revision_graph = dict(((key, value) for key, value in
3113
graph.iter_ancestry([revision_id]) if value is not None))
3114
return _strip_NULL_ghosts(revision_graph)
3117
def _strip_NULL_ghosts(revision_graph):
3118
"""Also don't use this. more compatibility code for unmigrated clients."""
3119
# Filter ghosts, and null:
3120
if _mod_revision.NULL_REVISION in revision_graph:
3121
del revision_graph[_mod_revision.NULL_REVISION]
3122
for key, parents in revision_graph.items():
3123
revision_graph[key] = tuple(parent for parent in parents if parent
3125
return revision_graph
added
removed
bzrlib/repository.py
