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# Copyright (C) 2005-2011 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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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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testament as _mod_testament,
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from bzrlib.bundle import serializer
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin, LogicalLockResult
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from bzrlib.trace import (
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log_exception_quietly, note, mutter, mutter_callsite, warning)
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# Old formats display a warning, but only once
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_deprecation_warning_done = False
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class IsInWriteGroupError(errors.InternalBzrError):
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_fmt = "May not refresh_data of repo %(repo)s while in a write group."
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def __init__(self, repo):
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errors.InternalBzrError.__init__(self, repo=repo)
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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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# whether this commit builder supports the record_entry_contents interface
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supports_record_entry_contents = 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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revision_id=None, lossy=False):
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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 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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:param lossy: Whether to discard data that can not be natively
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represented, when pushing to a foreign VCS
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self._committer = self._config.username()
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elif not isinstance(committer, unicode):
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self._committer = committer.decode() # throw if non-ascii
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self._committer = committer
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self._new_revision_id = revision_id
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self.parents = parents
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self.repository = repository
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if revprops is not None:
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self._validate_revprops(revprops)
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self._revprops.update(revprops)
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if timestamp is None:
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timestamp = time.time()
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# Restrict resolution to 1ms
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self._timestamp = round(timestamp, 3)
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self._timezone = osutils.local_time_offset()
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self._timezone = int(timezone)
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self._generate_revision_if_needed()
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def any_changes(self):
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"""Return True if any entries were changed.
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This includes merge-only changes. It is the core for the --unchanged
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:return: True if any changes have occured.
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raise NotImplementedError(self.any_changes)
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def _validate_unicode_text(self, text, context):
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"""Verify things like commit messages don't have bogus characters."""
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raise ValueError('Invalid value for %s: %r' % (context, text))
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def _validate_revprops(self, revprops):
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for key, value in revprops.iteritems():
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# We know that the XML serializers do not round trip '\r'
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# correctly, so refuse to accept them
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if not isinstance(value, basestring):
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raise ValueError('revision property (%s) is not a valid'
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' (unicode) string: %r' % (key, value))
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self._validate_unicode_text(value,
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'revision property (%s)' % (key,))
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def commit(self, message):
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"""Make the actual commit.
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:return: The revision id of the recorded revision.
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raise NotImplementedError(self.commit)
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"""Abort the commit that is being built.
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raise NotImplementedError(self.abort)
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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
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RevisionTree representing the newly committed tree. This is
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preferred to calling Repository.revision_tree() because that may
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require deserializing the inventory, while we already have a copy in
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raise NotImplementedError(self.revision_tree)
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def finish_inventory(self):
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"""Tell the builder that the inventory is finished.
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:return: The inventory id in the repository, which can be used with
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repository.get_inventory.
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raise NotImplementedError(self.finish_inventory)
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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._committer, self._timestamp)
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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 will_record_deletes(self):
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"""Tell the commit builder that deletes are being notified.
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This enables the accumulation of an inventory delta; for the resulting
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commit to be valid, deletes against the basis MUST be recorded via
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builder.record_delete().
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raise NotImplementedError(self.will_record_deletes)
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def record_iter_changes(self, tree, basis_revision_id, iter_changes):
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"""Record a new tree via iter_changes.
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:param tree: The tree to obtain text contents from for changed objects.
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:param basis_revision_id: The revision id of the tree the iter_changes
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has been generated against. Currently assumed to be the same
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as self.parents[0] - if it is not, errors may occur.
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:param iter_changes: An iter_changes iterator with the changes to apply
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to basis_revision_id. The iterator must not include any items with
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a current kind of None - missing items must be either filtered out
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or errored-on beefore record_iter_changes sees the item.
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:return: A generator of (file_id, relpath, fs_hash) tuples for use with
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raise NotImplementedError(self.record_iter_changes)
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class RepositoryWriteLockResult(LogicalLockResult):
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"""The result of write locking a repository.
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:ivar repository_token: The token obtained from the underlying lock, or
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:ivar unlock: A callable which will unlock the lock.
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def __init__(self, unlock, repository_token):
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LogicalLockResult.__init__(self, unlock)
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self.repository_token = repository_token
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return "RepositoryWriteLockResult(%s, %s)" % (self.repository_token,
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######################################################################
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class Repository(_RelockDebugMixin, controldir.ControlComponent):
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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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See VersionedFileRepository in bzrlib.vf_repository for the
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base class for most Bazaar repositories.
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def abort_write_group(self, suppress_errors=False):
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"""Commit the contents accrued within the current write group.
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:param suppress_errors: if true, abort_write_group will catch and log
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unexpected errors that happen during the abort, rather than
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allowing them to propagate. Defaults to False.
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:seealso: start_write_group.
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if self._write_group is not self.get_transaction():
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# has an unlock or relock occured ?
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'(suppressed) mismatched lock context and write group. %r, %r',
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self._write_group, self.get_transaction())
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raise errors.BzrError(
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'mismatched lock context and write group. %r, %r' %
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(self._write_group, self.get_transaction()))
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self._abort_write_group()
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except Exception, exc:
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self._write_group = None
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if not suppress_errors:
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mutter('abort_write_group failed')
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log_exception_quietly()
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note('bzr: ERROR (ignored): %s', exc)
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self._write_group = None
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def _abort_write_group(self):
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"""Template method for per-repository write group cleanup.
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This is called during abort before the write group is considered to be
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finished and should cleanup any internal state accrued during the write
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group. There is no requirement that data handed to the repository be
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*not* made available - this is not a rollback - but neither should any
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attempt be made to ensure that data added is fully commited. Abort is
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invoked when an error has occured so futher disk or network operations
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may not be possible or may error and if possible should not be
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def add_fallback_repository(self, repository):
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"""Add a repository to use for looking up data not held locally.
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:param repository: A repository.
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raise NotImplementedError(self.add_fallback_repository)
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def _check_fallback_repository(self, repository):
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"""Check that this repository can fallback to repository safely.
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Raise an error if not.
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:param repository: A repository to fallback to.
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return InterRepository._assert_same_model(self, repository)
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def 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 conceptually deprecated because code should generally work on
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the graph reachable from a particular revision, and ignore any other
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revisions that might be present. There is no direct replacement
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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):
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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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:param control_files: Control files to use for locking, etc.
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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._transport = control_files._transport
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self.base = self._transport.base
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self._write_group = None
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# Additional places to query for data.
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self._fallback_repositories = []
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def user_transport(self):
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return self.bzrdir.user_transport
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def control_transport(self):
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return self._transport
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if self._fallback_repositories:
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return '%s(%r, fallback_repositories=%r)' % (
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self.__class__.__name__,
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self._fallback_repositories)
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return '%s(%r)' % (self.__class__.__name__,
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def _has_same_fallbacks(self, other_repo):
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"""Returns true if the repositories have the same fallbacks."""
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my_fb = self._fallback_repositories
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other_fb = other_repo._fallback_repositories
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if len(my_fb) != len(other_fb):
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for f, g in zip(my_fb, other_fb):
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if not f.has_same_location(g):
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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._transport.base == other._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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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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: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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:return: A RepositoryWriteLockResult.
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locked = self.is_locked()
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token = self.control_files.lock_write(token=token)
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self._warn_if_deprecated()
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for repo in self._fallback_repositories:
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# Writes don't affect fallback repos
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return RepositoryWriteLockResult(self.unlock, token)
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"""Lock the repository for read operations.
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:return: An object with an unlock method which will release the lock
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locked = self.is_locked()
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self.control_files.lock_read()
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self._warn_if_deprecated()
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for repo in self._fallback_repositories:
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return LogicalLockResult(self.unlock)
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def get_physical_lock_status(self):
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return self.control_files.get_physical_lock_status()
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def leave_lock_in_place(self):
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"""Tell this repository not to release the physical lock when this
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.leave_in_place()
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def dont_leave_lock_in_place(self):
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"""Tell this repository to release the physical lock when this
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object is unlocked, even if it didn't originally acquire it.
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If lock_write doesn't return a token, then this method is not supported.
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self.control_files.dont_leave_in_place()
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def gather_stats(self, revid=None, committers=None):
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"""Gather statistics from a revision id.
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:param revid: The revision id to gather statistics from, if None, then
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no revision specific statistics are gathered.
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:param committers: Optional parameter controlling whether to grab
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a count of committers from the revision specific statistics.
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:return: A dictionary of statistics. Currently this contains:
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committers: The number of committers if requested.
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firstrev: A tuple with timestamp, timezone for the penultimate left
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most ancestor of revid, if revid is not the NULL_REVISION.
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latestrev: A tuple with timestamp, timezone for revid, if revid is
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not the NULL_REVISION.
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revisions: The total revision count in the repository.
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size: An estimate disk size of the repository in bytes.
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if revid and committers:
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result['committers'] = 0
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if revid and revid != _mod_revision.NULL_REVISION:
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all_committers = set()
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revisions = self.get_ancestry(revid)
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# pop the leading None
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first_revision = None
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# ignore the revisions in the middle - just grab first and last
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revisions = revisions[0], revisions[-1]
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for revision in self.get_revisions(revisions):
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if not first_revision:
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first_revision = revision
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all_committers.add(revision.committer)
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last_revision = revision
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result['committers'] = len(all_committers)
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result['firstrev'] = (first_revision.timestamp,
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first_revision.timezone)
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result['latestrev'] = (last_revision.timestamp,
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last_revision.timezone)
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def find_branches(self, using=False):
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"""Find branches underneath this repository.
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This will include branches inside other branches.
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:param using: If True, list only branches using this repository.
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if using and not self.is_shared():
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return self.bzrdir.list_branches()
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class Evaluator(object):
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self.first_call = True
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def __call__(self, bzrdir):
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# On the first call, the parameter is always the bzrdir
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# containing the current repo.
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if not self.first_call:
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repository = bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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return False, ([], repository)
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self.first_call = False
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value = (bzrdir.list_branches(), None)
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for branches, repository in bzrdir.BzrDir.find_bzrdirs(
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self.user_transport, evaluate=Evaluator()):
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if branches is not None:
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if not using and repository is not None:
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ret.extend(repository.find_branches())
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def search_missing_revision_ids(self, other,
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revision_id=symbol_versioning.DEPRECATED_PARAMETER,
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find_ghosts=True, revision_ids=None, if_present_ids=None,
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"""Return the revision ids that other has that this does not.
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These are returned in topological order.
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revision_id: only return revision ids included by revision_id.
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if symbol_versioning.deprecated_passed(revision_id):
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symbol_versioning.warn(
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'search_missing_revision_ids(revision_id=...) was '
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'deprecated in 2.4. Use revision_ids=[...] instead.',
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DeprecationWarning, stacklevel=3)
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if revision_ids is not None:
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raise AssertionError(
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'revision_ids is mutually exclusive with revision_id')
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if revision_id is not None:
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revision_ids = [revision_id]
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return InterRepository.get(other, self).search_missing_revision_ids(
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find_ghosts=find_ghosts, revision_ids=revision_ids,
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if_present_ids=if_present_ids, limit=limit)
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"""Open the repository rooted at base.
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For instance, if the repository is at URL/.bzr/repository,
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Repository.open(URL) -> a Repository instance.
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control = bzrdir.BzrDir.open(base)
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return control.open_repository()
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def copy_content_into(self, destination, revision_id=None):
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"""Make a complete copy of the content in self into destination.
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This is a destructive operation! Do not use it on existing
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return InterRepository.get(self, destination).copy_content(revision_id)
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def commit_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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:return: it may return an opaque hint that can be passed to 'pack'.
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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 %r and '
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(self.get_transaction(), self._write_group))
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result = self._commit_write_group()
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self._write_group = None
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def _commit_write_group(self):
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"""Template method for per-repository write group cleanup.
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This is called before the write group is considered to be
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finished and should ensure that all data handed to the repository
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for writing during the write group is safely committed (to the
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extent possible considering file system caching etc).
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def suspend_write_group(self):
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raise errors.UnsuspendableWriteGroup(self)
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def refresh_data(self):
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"""Re-read any data needed to synchronise with disk.
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This method is intended to be called after another repository instance
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(such as one used by a smart server) has inserted data into the
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repository. On all repositories this will work outside of write groups.
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Some repository formats (pack and newer for bzrlib native formats)
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support refresh_data inside write groups. If called inside a write
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group on a repository that does not support refreshing in a write group
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IsInWriteGroupError will be raised.
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def resume_write_group(self, tokens):
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if not self.is_write_locked():
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raise errors.NotWriteLocked(self)
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if self._write_group:
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raise errors.BzrError('already in a write group')
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self._resume_write_group(tokens)
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# so we can detect unlock/relock - the write group is now entered.
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self._write_group = self.get_transaction()
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def _resume_write_group(self, tokens):
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raise errors.UnsuspendableWriteGroup(self)
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def fetch(self, source, revision_id=None, find_ghosts=False,
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"""Fetch the content required to construct revision_id from source.
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If revision_id is None and fetch_spec is None, then all content is
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fetch() may not be used when the repository is in a write group -
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either finish the current write group before using fetch, or use
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fetch before starting the write group.
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:param find_ghosts: Find and copy revisions in the source that are
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ghosts in the target (and not reachable directly by walking out to
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the first-present revision in target from revision_id).
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:param revision_id: If specified, all the content needed for this
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revision ID will be copied to the target. Fetch will determine for
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itself which content needs to be copied.
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:param fetch_spec: If specified, a SearchResult or
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PendingAncestryResult that describes which revisions to copy. This
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allows copying multiple heads at once. Mutually exclusive with
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if fetch_spec is not None and revision_id is not None:
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raise AssertionError(
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"fetch_spec and revision_id are mutually exclusive.")
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if self.is_in_write_group():
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raise errors.InternalBzrError(
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"May not fetch while in a write group.")
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# fast path same-url fetch operations
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# TODO: lift out to somewhere common with RemoteRepository
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# <https://bugs.launchpad.net/bzr/+bug/401646>
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if (self.has_same_location(source)
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and fetch_spec is None
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and self._has_same_fallbacks(source)):
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# check that last_revision is in 'from' and then return a
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if (revision_id is not None and
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not _mod_revision.is_null(revision_id)):
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self.get_revision(revision_id)
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inter = InterRepository.get(source, self)
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return inter.fetch(revision_id=revision_id,
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find_ghosts=find_ghosts, fetch_spec=fetch_spec)
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def create_bundle(self, target, base, fileobj, format=None):
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return serializer.write_bundle(self, target, base, fileobj, format)
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def get_commit_builder(self, branch, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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revision_id=None, lossy=False):
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"""Obtain a CommitBuilder for this repository.
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:param branch: Branch 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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:param lossy: Whether to discard data that can not be natively
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represented, when pushing to a foreign VCS
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raise NotImplementedError(self.get_commit_builder)
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@only_raises(errors.LockNotHeld, errors.LockBroken)
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if (self.control_files._lock_count == 1 and
749
self.control_files._lock_mode == 'w'):
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if self._write_group is not None:
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self.abort_write_group()
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self.control_files.unlock()
753
raise errors.BzrError(
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'Must end write groups before releasing write locks.')
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self.control_files.unlock()
756
if self.control_files._lock_count == 0:
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for repo in self._fallback_repositories:
761
def clone(self, a_bzrdir, revision_id=None):
762
"""Clone this repository into a_bzrdir using the current format.
764
Currently no check is made that the format of this repository and
765
the bzrdir format are compatible. FIXME RBC 20060201.
767
:return: The newly created destination repository.
769
# TODO: deprecate after 0.16; cloning this with all its settings is
770
# probably not very useful -- mbp 20070423
771
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
772
self.copy_content_into(dest_repo, revision_id)
775
def start_write_group(self):
776
"""Start a write group in the repository.
778
Write groups are used by repositories which do not have a 1:1 mapping
779
between file ids and backend store to manage the insertion of data from
780
both fetch and commit operations.
782
A write lock is required around the start_write_group/commit_write_group
783
for the support of lock-requiring repository formats.
785
One can only insert data into a repository inside a write group.
789
if not self.is_write_locked():
790
raise errors.NotWriteLocked(self)
791
if self._write_group:
792
raise errors.BzrError('already in a write group')
793
self._start_write_group()
794
# so we can detect unlock/relock - the write group is now entered.
795
self._write_group = self.get_transaction()
797
def _start_write_group(self):
798
"""Template method for per-repository write group startup.
800
This is called before the write group is considered to be
805
def sprout(self, to_bzrdir, revision_id=None):
806
"""Create a descendent repository for new development.
808
Unlike clone, this does not copy the settings of the repository.
810
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
811
dest_repo.fetch(self, revision_id=revision_id)
814
def _create_sprouting_repo(self, a_bzrdir, shared):
815
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
816
# use target default format.
817
dest_repo = a_bzrdir.create_repository()
819
# Most control formats need the repository to be specifically
820
# created, but on some old all-in-one formats it's not needed
822
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
823
except errors.UninitializableFormat:
824
dest_repo = a_bzrdir.open_repository()
828
def has_revision(self, revision_id):
829
"""True if this repository has a copy of the revision."""
830
return revision_id in self.has_revisions((revision_id,))
833
def has_revisions(self, revision_ids):
834
"""Probe to find out the presence of multiple revisions.
836
:param revision_ids: An iterable of revision_ids.
837
:return: A set of the revision_ids that were present.
839
raise NotImplementedError(self.has_revisions)
842
def get_revision(self, revision_id):
843
"""Return the Revision object for a named revision."""
844
return self.get_revisions([revision_id])[0]
846
def get_revision_reconcile(self, revision_id):
847
"""'reconcile' helper routine that allows access to a revision always.
849
This variant of get_revision does not cross check the weave graph
850
against the revision one as get_revision does: but it should only
851
be used by reconcile, or reconcile-alike commands that are correcting
852
or testing the revision graph.
854
raise NotImplementedError(self.get_revision_reconcile)
856
def get_revisions(self, revision_ids):
857
"""Get many revisions at once.
859
Repositories that need to check data on every revision read should
860
subclass this method.
862
raise NotImplementedError(self.get_revisions)
864
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
865
"""Produce a generator of revision deltas.
867
Note that the input is a sequence of REVISIONS, not revision_ids.
868
Trees will be held in memory until the generator exits.
869
Each delta is relative to the revision's lefthand predecessor.
871
:param specific_fileids: if not None, the result is filtered
872
so that only those file-ids, their parents and their
873
children are included.
875
# Get the revision-ids of interest
876
required_trees = set()
877
for revision in revisions:
878
required_trees.add(revision.revision_id)
879
required_trees.update(revision.parent_ids[:1])
881
# Get the matching filtered trees. Note that it's more
882
# efficient to pass filtered trees to changes_from() rather
883
# than doing the filtering afterwards. changes_from() could
884
# arguably do the filtering itself but it's path-based, not
885
# file-id based, so filtering before or afterwards is
887
if specific_fileids is None:
888
trees = dict((t.get_revision_id(), t) for
889
t in self.revision_trees(required_trees))
891
trees = dict((t.get_revision_id(), t) for
892
t in self._filtered_revision_trees(required_trees,
895
# Calculate the deltas
896
for revision in revisions:
897
if not revision.parent_ids:
898
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
900
old_tree = trees[revision.parent_ids[0]]
901
yield trees[revision.revision_id].changes_from(old_tree)
904
def get_revision_delta(self, revision_id, specific_fileids=None):
905
"""Return the delta for one revision.
907
The delta is relative to the left-hand predecessor of the
910
:param specific_fileids: if not None, the result is filtered
911
so that only those file-ids, their parents and their
912
children are included.
914
r = self.get_revision(revision_id)
915
return list(self.get_deltas_for_revisions([r],
916
specific_fileids=specific_fileids))[0]
919
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
920
signature = gpg_strategy.sign(plaintext)
921
self.add_signature_text(revision_id, signature)
923
def add_signature_text(self, revision_id, signature):
924
"""Store a signature text for a revision.
926
:param revision_id: Revision id of the revision
927
:param signature: Signature text.
929
raise NotImplementedError(self.add_signature_text)
931
def _find_parent_ids_of_revisions(self, revision_ids):
932
"""Find all parent ids that are mentioned in the revision graph.
934
:return: set of revisions that are parents of revision_ids which are
935
not part of revision_ids themselves
937
parent_map = self.get_parent_map(revision_ids)
939
map(parent_ids.update, parent_map.itervalues())
940
parent_ids.difference_update(revision_ids)
941
parent_ids.discard(_mod_revision.NULL_REVISION)
944
def fileids_altered_by_revision_ids(self, revision_ids):
945
"""Find the file ids and versions affected by revisions.
947
:param revisions: an iterable containing revision ids.
948
:return: a dictionary mapping altered file-ids to an iterable of
949
revision_ids. Each altered file-ids has the exact revision_ids
950
that altered it listed explicitly.
952
raise NotImplementedError(self.fileids_altered_by_revision_ids)
954
def iter_files_bytes(self, desired_files):
955
"""Iterate through file versions.
957
Files will not necessarily be returned in the order they occur in
958
desired_files. No specific order is guaranteed.
960
Yields pairs of identifier, bytes_iterator. identifier is an opaque
961
value supplied by the caller as part of desired_files. It should
962
uniquely identify the file version in the caller's context. (Examples:
963
an index number or a TreeTransform trans_id.)
965
:param desired_files: a list of (file_id, revision_id, identifier)
968
raise NotImplementedError(self.iter_files_bytes)
970
def get_rev_id_for_revno(self, revno, known_pair):
971
"""Return the revision id of a revno, given a later (revno, revid)
972
pair in the same history.
974
:return: if found (True, revid). If the available history ran out
975
before reaching the revno, then this returns
976
(False, (closest_revno, closest_revid)).
978
known_revno, known_revid = known_pair
979
partial_history = [known_revid]
980
distance_from_known = known_revno - revno
981
if distance_from_known < 0:
983
'requested revno (%d) is later than given known revno (%d)'
984
% (revno, known_revno))
987
self, partial_history, stop_index=distance_from_known)
988
except errors.RevisionNotPresent, err:
989
if err.revision_id == known_revid:
990
# The start revision (known_revid) wasn't found.
992
# This is a stacked repository with no fallbacks, or a there's a
993
# left-hand ghost. Either way, even though the revision named in
994
# the error isn't in this repo, we know it's the next step in this
996
partial_history.append(err.revision_id)
997
if len(partial_history) <= distance_from_known:
998
# Didn't find enough history to get a revid for the revno.
999
earliest_revno = known_revno - len(partial_history) + 1
1000
return (False, (earliest_revno, partial_history[-1]))
1001
if len(partial_history) - 1 > distance_from_known:
1002
raise AssertionError('_iter_for_revno returned too much history')
1003
return (True, partial_history[-1])
1005
def iter_reverse_revision_history(self, revision_id):
1006
"""Iterate backwards through revision ids in the lefthand history
1008
:param revision_id: The revision id to start with. All its lefthand
1009
ancestors will be traversed.
1011
graph = self.get_graph()
1012
stop_revisions = (None, _mod_revision.NULL_REVISION)
1013
return graph.iter_lefthand_ancestry(revision_id, stop_revisions)
1015
def is_shared(self):
1016
"""Return True if this repository is flagged as a shared repository."""
1017
raise NotImplementedError(self.is_shared)
1020
def reconcile(self, other=None, thorough=False):
1021
"""Reconcile this repository."""
1022
from bzrlib.reconcile import RepoReconciler
1023
reconciler = RepoReconciler(self, thorough=thorough)
1024
reconciler.reconcile()
1027
def _refresh_data(self):
1028
"""Helper called from lock_* to ensure coherency with disk.
1030
The default implementation does nothing; it is however possible
1031
for repositories to maintain loaded indices across multiple locks
1032
by checking inside their implementation of this method to see
1033
whether their indices are still valid. This depends of course on
1034
the disk format being validatable in this manner. This method is
1035
also called by the refresh_data() public interface to cause a refresh
1036
to occur while in a write lock so that data inserted by a smart server
1037
push operation is visible on the client's instance of the physical
1042
def revision_tree(self, revision_id):
1043
"""Return Tree for a revision on this branch.
1045
`revision_id` may be NULL_REVISION for the empty tree revision.
1047
raise NotImplementedError(self.revision_tree)
1049
def revision_trees(self, revision_ids):
1050
"""Return Trees for revisions in this repository.
1052
:param revision_ids: a sequence of revision-ids;
1053
a revision-id may not be None or 'null:'
1055
raise NotImplementedError(self.revision_trees)
1058
def get_ancestry(self, revision_id, topo_sorted=True):
1059
"""Return a list of revision-ids integrated by a revision.
1061
The first element of the list is always None, indicating the origin
1062
revision. This might change when we have history horizons, or
1063
perhaps we should have a new API.
1065
This is topologically sorted.
1067
if _mod_revision.is_null(revision_id):
1069
if not self.has_revision(revision_id):
1070
raise errors.NoSuchRevision(self, revision_id)
1071
graph = self.get_graph()
1073
search = graph._make_breadth_first_searcher([revision_id])
1076
found, ghosts = search.next_with_ghosts()
1077
except StopIteration:
1080
if _mod_revision.NULL_REVISION in keys:
1081
keys.remove(_mod_revision.NULL_REVISION)
1083
parent_map = graph.get_parent_map(keys)
1084
keys = tsort.topo_sort(parent_map)
1085
return [None] + list(keys)
1087
def pack(self, hint=None, clean_obsolete_packs=False):
1088
"""Compress the data within the repository.
1090
This operation only makes sense for some repository types. For other
1091
types it should be a no-op that just returns.
1093
This stub method does not require a lock, but subclasses should use
1094
@needs_write_lock as this is a long running call it's reasonable to
1095
implicitly lock for the user.
1097
:param hint: If not supplied, the whole repository is packed.
1098
If supplied, the repository may use the hint parameter as a
1099
hint for the parts of the repository to pack. A hint can be
1100
obtained from the result of commit_write_group(). Out of
1101
date hints are simply ignored, because concurrent operations
1102
can obsolete them rapidly.
1104
:param clean_obsolete_packs: Clean obsolete packs immediately after
1108
def get_transaction(self):
1109
return self.control_files.get_transaction()
1111
def get_parent_map(self, revision_ids):
1112
"""See graph.StackedParentsProvider.get_parent_map"""
1113
raise NotImplementedError(self.get_parent_map)
1115
def _get_parent_map_no_fallbacks(self, revision_ids):
1116
"""Same as Repository.get_parent_map except doesn't query fallbacks."""
1117
# revisions index works in keys; this just works in revisions
1118
# therefore wrap and unwrap
1121
for revision_id in revision_ids:
1122
if revision_id == _mod_revision.NULL_REVISION:
1123
result[revision_id] = ()
1124
elif revision_id is None:
1125
raise ValueError('get_parent_map(None) is not valid')
1127
query_keys.append((revision_id ,))
1128
vf = self.revisions.without_fallbacks()
1129
for ((revision_id,), parent_keys) in \
1130
vf.get_parent_map(query_keys).iteritems():
1132
result[revision_id] = tuple([parent_revid
1133
for (parent_revid,) in parent_keys])
1135
result[revision_id] = (_mod_revision.NULL_REVISION,)
1138
def _make_parents_provider(self):
1139
if not self._format.supports_external_lookups:
1141
return graph.StackedParentsProvider(_LazyListJoin(
1142
[self._make_parents_provider_unstacked()],
1143
self._fallback_repositories))
1145
def _make_parents_provider_unstacked(self):
1146
return graph.CallableToParentsProviderAdapter(
1147
self._get_parent_map_no_fallbacks)
1150
def get_known_graph_ancestry(self, revision_ids):
1151
"""Return the known graph for a set of revision ids and their ancestors.
1153
raise NotImplementedError(self.get_known_graph_ancestry)
1155
def get_file_graph(self):
1156
"""Return the graph walker for files."""
1157
raise NotImplementedError(self.get_file_graph)
1159
def get_graph(self, other_repository=None):
1160
"""Return the graph walker for this repository format"""
1161
parents_provider = self._make_parents_provider()
1162
if (other_repository is not None and
1163
not self.has_same_location(other_repository)):
1164
parents_provider = graph.StackedParentsProvider(
1165
[parents_provider, other_repository._make_parents_provider()])
1166
return graph.Graph(parents_provider)
1168
def revision_ids_to_search_result(self, result_set):
1169
"""Convert a set of revision ids to a graph SearchResult."""
1170
result_parents = set()
1171
for parents in self.get_graph().get_parent_map(
1172
result_set).itervalues():
1173
result_parents.update(parents)
1174
included_keys = result_set.intersection(result_parents)
1175
start_keys = result_set.difference(included_keys)
1176
exclude_keys = result_parents.difference(result_set)
1177
result = graph.SearchResult(start_keys, exclude_keys,
1178
len(result_set), result_set)
1182
def set_make_working_trees(self, new_value):
1183
"""Set the policy flag for making working trees when creating branches.
1185
This only applies to branches that use this repository.
1187
The default is 'True'.
1188
:param new_value: True to restore the default, False to disable making
1191
raise NotImplementedError(self.set_make_working_trees)
1193
def make_working_trees(self):
1194
"""Returns the policy for making working trees on new branches."""
1195
raise NotImplementedError(self.make_working_trees)
1198
def sign_revision(self, revision_id, gpg_strategy):
1199
testament = _mod_testament.Testament.from_revision(self, revision_id)
1200
plaintext = testament.as_short_text()
1201
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1203
def has_signature_for_revision_id(self, revision_id):
1204
"""Query for a revision signature for revision_id in the repository."""
1205
raise NotImplementedError(self.has_signature_for_revision_id)
1207
def get_signature_text(self, revision_id):
1208
"""Return the text for a signature."""
1209
raise NotImplementedError(self.get_signature_text)
1211
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
1212
"""Check consistency of all history of given revision_ids.
1214
Different repository implementations should override _check().
1216
:param revision_ids: A non-empty list of revision_ids whose ancestry
1217
will be checked. Typically the last revision_id of a branch.
1218
:param callback_refs: A dict of check-refs to resolve and callback
1219
the check/_check method on the items listed as wanting the ref.
1221
:param check_repo: If False do not check the repository contents, just
1222
calculate the data callback_refs requires and call them back.
1224
return self._check(revision_ids=revision_ids, callback_refs=callback_refs,
1225
check_repo=check_repo)
1227
def _check(self, revision_ids=None, callback_refs=None, check_repo=True):
1228
raise NotImplementedError(self.check)
1230
def _warn_if_deprecated(self, branch=None):
1231
if not self._format.is_deprecated():
1233
global _deprecation_warning_done
1234
if _deprecation_warning_done:
1238
conf = config.GlobalConfig()
1240
conf = branch.get_config()
1241
if conf.suppress_warning('format_deprecation'):
1243
warning("Format %s for %s is deprecated -"
1244
" please use 'bzr upgrade' to get better performance"
1245
% (self._format, self.bzrdir.transport.base))
1247
_deprecation_warning_done = True
1249
def supports_rich_root(self):
1250
return self._format.rich_root_data
1252
def _check_ascii_revisionid(self, revision_id, method):
1253
"""Private helper for ascii-only repositories."""
1254
# weave repositories refuse to store revisionids that are non-ascii.
1255
if revision_id is not None:
1256
# weaves require ascii revision ids.
1257
if isinstance(revision_id, unicode):
1259
revision_id.encode('ascii')
1260
except UnicodeEncodeError:
1261
raise errors.NonAsciiRevisionId(method, self)
1264
revision_id.decode('ascii')
1265
except UnicodeDecodeError:
1266
raise errors.NonAsciiRevisionId(method, self)
1269
class MetaDirRepository(Repository):
1270
"""Repositories in the new meta-dir layout.
1272
:ivar _transport: Transport for access to repository control files,
1273
typically pointing to .bzr/repository.
1276
def __init__(self, _format, a_bzrdir, control_files):
1277
super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
1278
self._transport = control_files._transport
1280
def is_shared(self):
1281
"""Return True if this repository is flagged as a shared repository."""
1282
return self._transport.has('shared-storage')
1285
def set_make_working_trees(self, new_value):
1286
"""Set the policy flag for making working trees when creating branches.
1288
This only applies to branches that use this repository.
1290
The default is 'True'.
1291
:param new_value: True to restore the default, False to disable making
1296
self._transport.delete('no-working-trees')
1297
except errors.NoSuchFile:
1300
self._transport.put_bytes('no-working-trees', '',
1301
mode=self.bzrdir._get_file_mode())
1303
def make_working_trees(self):
1304
"""Returns the policy for making working trees on new branches."""
1305
return not self._transport.has('no-working-trees')
1308
class RepositoryFormatRegistry(controldir.ControlComponentFormatRegistry):
1309
"""Repository format registry."""
1311
def get_default(self):
1312
"""Return the current default format."""
1313
from bzrlib import bzrdir
1314
return bzrdir.format_registry.make_bzrdir('default').repository_format
1317
network_format_registry = registry.FormatRegistry()
1318
"""Registry of formats indexed by their network name.
1320
The network name for a repository format is an identifier that can be used when
1321
referring to formats with smart server operations. See
1322
RepositoryFormat.network_name() for more detail.
1326
format_registry = RepositoryFormatRegistry(network_format_registry)
1327
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
1329
This can contain either format instances themselves, or classes/factories that
1330
can be called to obtain one.
1334
#####################################################################
1335
# Repository Formats
1337
class RepositoryFormat(controldir.ControlComponentFormat):
1338
"""A repository format.
1340
Formats provide four things:
1341
* An initialization routine to construct repository data on disk.
1342
* a optional format string which is used when the BzrDir supports
1344
* an open routine which returns a Repository instance.
1345
* A network name for referring to the format in smart server RPC
1348
There is one and only one Format subclass for each on-disk format. But
1349
there can be one Repository subclass that is used for several different
1350
formats. The _format attribute on a Repository instance can be used to
1351
determine the disk format.
1353
Formats are placed in a registry by their format string for reference
1354
during opening. These should be subclasses of RepositoryFormat for
1357
Once a format is deprecated, just deprecate the initialize and open
1358
methods on the format class. Do not deprecate the object, as the
1359
object may be created even when a repository instance hasn't been
1362
Common instance attributes:
1363
_matchingbzrdir - the bzrdir format that the repository format was
1364
originally written to work with. This can be used if manually
1365
constructing a bzrdir and repository, or more commonly for test suite
1369
# Set to True or False in derived classes. True indicates that the format
1370
# supports ghosts gracefully.
1371
supports_ghosts = None
1372
# Can this repository be given external locations to lookup additional
1373
# data. Set to True or False in derived classes.
1374
supports_external_lookups = None
1375
# Does this format support CHK bytestring lookups. Set to True or False in
1377
supports_chks = None
1378
# Should fetch trigger a reconcile after the fetch? Only needed for
1379
# some repository formats that can suffer internal inconsistencies.
1380
_fetch_reconcile = False
1381
# Does this format have < O(tree_size) delta generation. Used to hint what
1382
# code path for commit, amongst other things.
1384
# Does doing a pack operation compress data? Useful for the pack UI command
1385
# (so if there is one pack, the operation can still proceed because it may
1386
# help), and for fetching when data won't have come from the same
1388
pack_compresses = False
1389
# Does the repository storage understand references to trees?
1390
supports_tree_reference = None
1391
# Is the format experimental ?
1392
experimental = False
1393
# Does this repository format escape funky characters, or does it create
1394
# files with similar names as the versioned files in its contents on disk
1396
supports_funky_characters = None
1397
# Does this repository format support leaving locks?
1398
supports_leaving_lock = None
1399
# Does this format support the full VersionedFiles interface?
1400
supports_full_versioned_files = None
1401
# Does this format support signing revision signatures?
1402
supports_revision_signatures = True
1403
# Can the revision graph have incorrect parents?
1404
revision_graph_can_have_wrong_parents = None
1405
# Does this format support rich root data?
1406
rich_root_data = None
1409
return "%s()" % self.__class__.__name__
1411
def __eq__(self, other):
1412
# format objects are generally stateless
1413
return isinstance(other, self.__class__)
1415
def __ne__(self, other):
1416
return not self == other
1419
def find_format(klass, a_bzrdir):
1420
"""Return the format for the repository object in a_bzrdir.
1422
This is used by bzr native formats that have a "format" file in
1423
the repository. Other methods may be used by different types of
1427
transport = a_bzrdir.get_repository_transport(None)
1428
format_string = transport.get_bytes("format")
1429
return format_registry.get(format_string)
1430
except errors.NoSuchFile:
1431
raise errors.NoRepositoryPresent(a_bzrdir)
1433
raise errors.UnknownFormatError(format=format_string,
1437
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1438
def register_format(klass, format):
1439
format_registry.register(format)
1442
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1443
def unregister_format(klass, format):
1444
format_registry.remove(format)
1447
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1448
def get_default_format(klass):
1449
"""Return the current default format."""
1450
return format_registry.get_default()
1452
def get_format_string(self):
1453
"""Return the ASCII format string that identifies this format.
1455
Note that in pre format ?? repositories the format string is
1456
not permitted nor written to disk.
1458
raise NotImplementedError(self.get_format_string)
1460
def get_format_description(self):
1461
"""Return the short description for this format."""
1462
raise NotImplementedError(self.get_format_description)
1464
def initialize(self, a_bzrdir, shared=False):
1465
"""Initialize a repository of this format in a_bzrdir.
1467
:param a_bzrdir: The bzrdir to put the new repository in it.
1468
:param shared: The repository should be initialized as a sharable one.
1469
:returns: The new repository object.
1471
This may raise UninitializableFormat if shared repository are not
1472
compatible the a_bzrdir.
1474
raise NotImplementedError(self.initialize)
1476
def is_supported(self):
1477
"""Is this format supported?
1479
Supported formats must be initializable and openable.
1480
Unsupported formats may not support initialization or committing or
1481
some other features depending on the reason for not being supported.
1485
def is_deprecated(self):
1486
"""Is this format deprecated?
1488
Deprecated formats may trigger a user-visible warning recommending
1489
the user to upgrade. They are still fully supported.
1493
def network_name(self):
1494
"""A simple byte string uniquely identifying this format for RPC calls.
1496
MetaDir repository formats use their disk format string to identify the
1497
repository over the wire. All in one formats such as bzr < 0.8, and
1498
foreign formats like svn/git and hg should use some marker which is
1499
unique and immutable.
1501
raise NotImplementedError(self.network_name)
1503
def check_conversion_target(self, target_format):
1504
if self.rich_root_data and not target_format.rich_root_data:
1505
raise errors.BadConversionTarget(
1506
'Does not support rich root data.', target_format,
1508
if (self.supports_tree_reference and
1509
not getattr(target_format, 'supports_tree_reference', False)):
1510
raise errors.BadConversionTarget(
1511
'Does not support nested trees', target_format,
1514
def open(self, a_bzrdir, _found=False):
1515
"""Return an instance of this format for the bzrdir a_bzrdir.
1517
_found is a private parameter, do not use it.
1519
raise NotImplementedError(self.open)
1521
def _run_post_repo_init_hooks(self, repository, a_bzrdir, shared):
1522
from bzrlib.bzrdir import BzrDir, RepoInitHookParams
1523
hooks = BzrDir.hooks['post_repo_init']
1526
params = RepoInitHookParams(repository, self, a_bzrdir, shared)
1531
class MetaDirRepositoryFormat(RepositoryFormat):
1532
"""Common base class for the new repositories using the metadir layout."""
1534
rich_root_data = False
1535
supports_tree_reference = False
1536
supports_external_lookups = False
1537
supports_leaving_lock = True
1540
def _matchingbzrdir(self):
1541
matching = bzrdir.BzrDirMetaFormat1()
1542
matching.repository_format = self
1546
super(MetaDirRepositoryFormat, self).__init__()
1548
def _create_control_files(self, a_bzrdir):
1549
"""Create the required files and the initial control_files object."""
1550
# FIXME: RBC 20060125 don't peek under the covers
1551
# NB: no need to escape relative paths that are url safe.
1552
repository_transport = a_bzrdir.get_repository_transport(self)
1553
control_files = lockable_files.LockableFiles(repository_transport,
1554
'lock', lockdir.LockDir)
1555
control_files.create_lock()
1556
return control_files
1558
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
1559
"""Upload the initial blank content."""
1560
control_files = self._create_control_files(a_bzrdir)
1561
control_files.lock_write()
1562
transport = control_files._transport
1564
utf8_files += [('shared-storage', '')]
1566
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
1567
for (filename, content_stream) in files:
1568
transport.put_file(filename, content_stream,
1569
mode=a_bzrdir._get_file_mode())
1570
for (filename, content_bytes) in utf8_files:
1571
transport.put_bytes_non_atomic(filename, content_bytes,
1572
mode=a_bzrdir._get_file_mode())
1574
control_files.unlock()
1576
def network_name(self):
1577
"""Metadir formats have matching disk and network format strings."""
1578
return self.get_format_string()
1581
# formats which have no format string are not discoverable or independently
1582
# creatable on disk, so are not registered in format_registry. They're
1583
# all in bzrlib.repofmt.knitreponow. When an instance of one of these is
1584
# needed, it's constructed directly by the BzrDir. Non-native formats where
1585
# the repository is not separately opened are similar.
1587
format_registry.register_lazy(
1588
'Bazaar-NG Knit Repository Format 1',
1589
'bzrlib.repofmt.knitrepo',
1590
'RepositoryFormatKnit1',
1593
format_registry.register_lazy(
1594
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
1595
'bzrlib.repofmt.knitrepo',
1596
'RepositoryFormatKnit3',
1599
format_registry.register_lazy(
1600
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
1601
'bzrlib.repofmt.knitrepo',
1602
'RepositoryFormatKnit4',
1605
# Pack-based formats. There is one format for pre-subtrees, and one for
1606
# post-subtrees to allow ease of testing.
1607
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
1608
format_registry.register_lazy(
1609
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
1610
'bzrlib.repofmt.knitpack_repo',
1611
'RepositoryFormatKnitPack1',
1613
format_registry.register_lazy(
1614
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
1615
'bzrlib.repofmt.knitpack_repo',
1616
'RepositoryFormatKnitPack3',
1618
format_registry.register_lazy(
1619
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
1620
'bzrlib.repofmt.knitpack_repo',
1621
'RepositoryFormatKnitPack4',
1623
format_registry.register_lazy(
1624
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
1625
'bzrlib.repofmt.knitpack_repo',
1626
'RepositoryFormatKnitPack5',
1628
format_registry.register_lazy(
1629
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
1630
'bzrlib.repofmt.knitpack_repo',
1631
'RepositoryFormatKnitPack5RichRoot',
1633
format_registry.register_lazy(
1634
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
1635
'bzrlib.repofmt.knitpack_repo',
1636
'RepositoryFormatKnitPack5RichRootBroken',
1638
format_registry.register_lazy(
1639
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
1640
'bzrlib.repofmt.knitpack_repo',
1641
'RepositoryFormatKnitPack6',
1643
format_registry.register_lazy(
1644
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
1645
'bzrlib.repofmt.knitpack_repo',
1646
'RepositoryFormatKnitPack6RichRoot',
1648
format_registry.register_lazy(
1649
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
1650
'bzrlib.repofmt.groupcompress_repo',
1651
'RepositoryFormat2a',
1654
# Development formats.
1655
# Check their docstrings to see if/when they are obsolete.
1656
format_registry.register_lazy(
1657
("Bazaar development format 2 with subtree support "
1658
"(needs bzr.dev from before 1.8)\n"),
1659
'bzrlib.repofmt.knitpack_repo',
1660
'RepositoryFormatPackDevelopment2Subtree',
1662
format_registry.register_lazy(
1663
'Bazaar development format 8\n',
1664
'bzrlib.repofmt.groupcompress_repo',
1665
'RepositoryFormat2aSubtree',
1669
class InterRepository(InterObject):
1670
"""This class represents operations taking place between two repositories.
1672
Its instances have methods like copy_content and fetch, and contain
1673
references to the source and target repositories these operations can be
1676
Often we will provide convenience methods on 'repository' which carry out
1677
operations with another repository - they will always forward to
1678
InterRepository.get(other).method_name(parameters).
1682
"""The available optimised InterRepository types."""
1685
def copy_content(self, revision_id=None):
1686
"""Make a complete copy of the content in self into destination.
1688
This is a destructive operation! Do not use it on existing
1691
:param revision_id: Only copy the content needed to construct
1692
revision_id and its parents.
1695
self.target.set_make_working_trees(self.source.make_working_trees())
1696
except NotImplementedError:
1698
self.target.fetch(self.source, revision_id=revision_id)
1701
def fetch(self, revision_id=None, find_ghosts=False,
1703
"""Fetch the content required to construct revision_id.
1705
The content is copied from self.source to self.target.
1707
:param revision_id: if None all content is copied, if NULL_REVISION no
1711
raise NotImplementedError(self.fetch)
1714
def search_missing_revision_ids(self,
1715
revision_id=symbol_versioning.DEPRECATED_PARAMETER,
1716
find_ghosts=True, revision_ids=None, if_present_ids=None,
1718
"""Return the revision ids that source has that target does not.
1720
:param revision_id: only return revision ids included by this
1722
:param revision_ids: return revision ids included by these
1723
revision_ids. NoSuchRevision will be raised if any of these
1724
revisions are not present.
1725
:param if_present_ids: like revision_ids, but will not cause
1726
NoSuchRevision if any of these are absent, instead they will simply
1727
not be in the result. This is useful for e.g. finding revisions
1728
to fetch for tags, which may reference absent revisions.
1729
:param find_ghosts: If True find missing revisions in deep history
1730
rather than just finding the surface difference.
1731
:param limit: Maximum number of revisions to return, topologically
1733
:return: A bzrlib.graph.SearchResult.
1735
raise NotImplementedError(self.search_missing_revision_ids)
1738
def _same_model(source, target):
1739
"""True if source and target have the same data representation.
1741
Note: this is always called on the base class; overriding it in a
1742
subclass will have no effect.
1745
InterRepository._assert_same_model(source, target)
1747
except errors.IncompatibleRepositories, e:
1751
def _assert_same_model(source, target):
1752
"""Raise an exception if two repositories do not use the same model.
1754
if source.supports_rich_root() != target.supports_rich_root():
1755
raise errors.IncompatibleRepositories(source, target,
1756
"different rich-root support")
1757
if source._serializer != target._serializer:
1758
raise errors.IncompatibleRepositories(source, target,
1759
"different serializers")
1762
class CopyConverter(object):
1763
"""A repository conversion tool which just performs a copy of the content.
1765
This is slow but quite reliable.
1768
def __init__(self, target_format):
1769
"""Create a CopyConverter.
1771
:param target_format: The format the resulting repository should be.
1773
self.target_format = target_format
1775
def convert(self, repo, pb):
1776
"""Perform the conversion of to_convert, giving feedback via pb.
1778
:param to_convert: The disk object to convert.
1779
:param pb: a progress bar to use for progress information.
1781
pb = ui.ui_factory.nested_progress_bar()
1784
# this is only useful with metadir layouts - separated repo content.
1785
# trigger an assertion if not such
1786
repo._format.get_format_string()
1787
self.repo_dir = repo.bzrdir
1788
pb.update('Moving repository to repository.backup')
1789
self.repo_dir.transport.move('repository', 'repository.backup')
1790
backup_transport = self.repo_dir.transport.clone('repository.backup')
1791
repo._format.check_conversion_target(self.target_format)
1792
self.source_repo = repo._format.open(self.repo_dir,
1794
_override_transport=backup_transport)
1795
pb.update('Creating new repository')
1796
converted = self.target_format.initialize(self.repo_dir,
1797
self.source_repo.is_shared())
1798
converted.lock_write()
1800
pb.update('Copying content')
1801
self.source_repo.copy_content_into(converted)
1804
pb.update('Deleting old repository content')
1805
self.repo_dir.transport.delete_tree('repository.backup')
1806
ui.ui_factory.note('repository converted')
1810
def _strip_NULL_ghosts(revision_graph):
1811
"""Also don't use this. more compatibility code for unmigrated clients."""
1812
# Filter ghosts, and null:
1813
if _mod_revision.NULL_REVISION in revision_graph:
1814
del revision_graph[_mod_revision.NULL_REVISION]
1815
for key, parents in revision_graph.items():
1816
revision_graph[key] = tuple(parent for parent in parents if parent
1818
return revision_graph
1821
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
1822
stop_revision=None):
1823
"""Extend the partial history to include a given index
1825
If a stop_index is supplied, stop when that index has been reached.
1826
If a stop_revision is supplied, stop when that revision is
1827
encountered. Otherwise, stop when the beginning of history is
1830
:param stop_index: The index which should be present. When it is
1831
present, history extension will stop.
1832
:param stop_revision: The revision id which should be present. When
1833
it is encountered, history extension will stop.
1835
start_revision = partial_history_cache[-1]
1836
iterator = repo.iter_reverse_revision_history(start_revision)
1838
#skip the last revision in the list
1841
if (stop_index is not None and
1842
len(partial_history_cache) > stop_index):
1844
if partial_history_cache[-1] == stop_revision:
1846
revision_id = iterator.next()
1847
partial_history_cache.append(revision_id)
1848
except StopIteration:
1853
class _LazyListJoin(object):
1854
"""An iterable yielding the contents of many lists as one list.
1856
Each iterator made from this will reflect the current contents of the lists
1857
at the time the iterator is made.
1859
This is used by Repository's _make_parents_provider implementation so that
1862
pp = repo._make_parents_provider() # uses a list of fallback repos
1863
pp.add_fallback_repository(other_repo) # appends to that list
1864
result = pp.get_parent_map(...)
1865
# The result will include revs from other_repo
1868
def __init__(self, *list_parts):
1869
self.list_parts = list_parts
1873
for list_part in self.list_parts:
1874
full_list.extend(list_part)
1875
return iter(full_list)