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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.i18n import gettext
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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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# whether this commit builder will automatically update the branch that is
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updates_branch = 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(gettext('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 create(controldir):
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"""Construct the current default format repository in controldir."""
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return RepositoryFormat.get_default_format().initialize(controldir)
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def __init__(self, _format, controldir, 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 controldir: The ControlDir 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 = controldir
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self.control_files = control_files
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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.control_url == other.control_url)
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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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graph = self.get_graph()
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all_committers = set()
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revisions = [r for (r, p) in graph.iter_ancestry([revid])
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if r != _mod_revision.NULL_REVISION]
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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 last_revision:
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last_revision = revision
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all_committers.add(revision.committer)
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first_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, controldir):
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# On the first call, the parameter is always the controldir
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# containing the current repo.
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if not self.first_call:
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repository = controldir.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 = (controldir.list_branches(), None)
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for branches, repository in controldir.ControlDir.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 = controldir.ControlDir.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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"""Suspend a write group.
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:raise UnsuspendableWriteGroup: If the write group can not be
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:return: List of tokens
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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, then all content is copied.
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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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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 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, find_ghosts=find_ghosts)
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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
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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()
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raise errors.BzrError(
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'Must end write groups before releasing write locks.')
741
self.control_files.unlock()
742
if self.control_files._lock_count == 0:
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for repo in self._fallback_repositories:
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def clone(self, controldir, revision_id=None):
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"""Clone this repository into controldir using the current format.
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Currently no check is made that the format of this repository and
751
the bzrdir format are compatible. FIXME RBC 20060201.
753
:return: The newly created destination repository.
755
# TODO: deprecate after 0.16; cloning this with all its settings is
756
# probably not very useful -- mbp 20070423
757
dest_repo = self._create_sprouting_repo(
758
controldir, shared=self.is_shared())
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self.copy_content_into(dest_repo, revision_id)
762
def start_write_group(self):
763
"""Start a write group in the repository.
765
Write groups are used by repositories which do not have a 1:1 mapping
766
between file ids and backend store to manage the insertion of data from
767
both fetch and commit operations.
769
A write lock is required around the start_write_group/commit_write_group
770
for the support of lock-requiring repository formats.
772
One can only insert data into a repository inside a write group.
776
if not self.is_write_locked():
777
raise errors.NotWriteLocked(self)
778
if self._write_group:
779
raise errors.BzrError('already in a write group')
780
self._start_write_group()
781
# so we can detect unlock/relock - the write group is now entered.
782
self._write_group = self.get_transaction()
784
def _start_write_group(self):
785
"""Template method for per-repository write group startup.
787
This is called before the write group is considered to be
792
def sprout(self, to_bzrdir, revision_id=None):
793
"""Create a descendent repository for new development.
795
Unlike clone, this does not copy the settings of the repository.
797
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
798
dest_repo.fetch(self, revision_id=revision_id)
801
def _create_sprouting_repo(self, a_bzrdir, shared):
802
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
803
# use target default format.
804
dest_repo = a_bzrdir.create_repository()
806
# Most control formats need the repository to be specifically
807
# created, but on some old all-in-one formats it's not needed
809
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
810
except errors.UninitializableFormat:
811
dest_repo = a_bzrdir.open_repository()
815
def has_revision(self, revision_id):
816
"""True if this repository has a copy of the revision."""
817
return revision_id in self.has_revisions((revision_id,))
820
def has_revisions(self, revision_ids):
821
"""Probe to find out the presence of multiple revisions.
823
:param revision_ids: An iterable of revision_ids.
824
:return: A set of the revision_ids that were present.
826
raise NotImplementedError(self.has_revisions)
829
def get_revision(self, revision_id):
830
"""Return the Revision object for a named revision."""
831
return self.get_revisions([revision_id])[0]
833
def get_revision_reconcile(self, revision_id):
834
"""'reconcile' helper routine that allows access to a revision always.
836
This variant of get_revision does not cross check the weave graph
837
against the revision one as get_revision does: but it should only
838
be used by reconcile, or reconcile-alike commands that are correcting
839
or testing the revision graph.
841
raise NotImplementedError(self.get_revision_reconcile)
843
def get_revisions(self, revision_ids):
844
"""Get many revisions at once.
846
Repositories that need to check data on every revision read should
847
subclass this method.
849
raise NotImplementedError(self.get_revisions)
851
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
852
"""Produce a generator of revision deltas.
854
Note that the input is a sequence of REVISIONS, not revision_ids.
855
Trees will be held in memory until the generator exits.
856
Each delta is relative to the revision's lefthand predecessor.
858
:param specific_fileids: if not None, the result is filtered
859
so that only those file-ids, their parents and their
860
children are included.
862
# Get the revision-ids of interest
863
required_trees = set()
864
for revision in revisions:
865
required_trees.add(revision.revision_id)
866
required_trees.update(revision.parent_ids[:1])
868
# Get the matching filtered trees. Note that it's more
869
# efficient to pass filtered trees to changes_from() rather
870
# than doing the filtering afterwards. changes_from() could
871
# arguably do the filtering itself but it's path-based, not
872
# file-id based, so filtering before or afterwards is
874
if specific_fileids is None:
875
trees = dict((t.get_revision_id(), t) for
876
t in self.revision_trees(required_trees))
878
trees = dict((t.get_revision_id(), t) for
879
t in self._filtered_revision_trees(required_trees,
882
# Calculate the deltas
883
for revision in revisions:
884
if not revision.parent_ids:
885
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
887
old_tree = trees[revision.parent_ids[0]]
888
yield trees[revision.revision_id].changes_from(old_tree)
891
def get_revision_delta(self, revision_id, specific_fileids=None):
892
"""Return the delta for one revision.
894
The delta is relative to the left-hand predecessor of the
897
:param specific_fileids: if not None, the result is filtered
898
so that only those file-ids, their parents and their
899
children are included.
901
r = self.get_revision(revision_id)
902
return list(self.get_deltas_for_revisions([r],
903
specific_fileids=specific_fileids))[0]
906
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
907
signature = gpg_strategy.sign(plaintext)
908
self.add_signature_text(revision_id, signature)
910
def add_signature_text(self, revision_id, signature):
911
"""Store a signature text for a revision.
913
:param revision_id: Revision id of the revision
914
:param signature: Signature text.
916
raise NotImplementedError(self.add_signature_text)
918
def _find_parent_ids_of_revisions(self, revision_ids):
919
"""Find all parent ids that are mentioned in the revision graph.
921
:return: set of revisions that are parents of revision_ids which are
922
not part of revision_ids themselves
924
parent_map = self.get_parent_map(revision_ids)
926
map(parent_ids.update, parent_map.itervalues())
927
parent_ids.difference_update(revision_ids)
928
parent_ids.discard(_mod_revision.NULL_REVISION)
931
def iter_files_bytes(self, desired_files):
932
"""Iterate through file versions.
934
Files will not necessarily be returned in the order they occur in
935
desired_files. No specific order is guaranteed.
937
Yields pairs of identifier, bytes_iterator. identifier is an opaque
938
value supplied by the caller as part of desired_files. It should
939
uniquely identify the file version in the caller's context. (Examples:
940
an index number or a TreeTransform trans_id.)
942
:param desired_files: a list of (file_id, revision_id, identifier)
945
raise NotImplementedError(self.iter_files_bytes)
947
def get_rev_id_for_revno(self, revno, known_pair):
948
"""Return the revision id of a revno, given a later (revno, revid)
949
pair in the same history.
951
:return: if found (True, revid). If the available history ran out
952
before reaching the revno, then this returns
953
(False, (closest_revno, closest_revid)).
955
known_revno, known_revid = known_pair
956
partial_history = [known_revid]
957
distance_from_known = known_revno - revno
958
if distance_from_known < 0:
960
'requested revno (%d) is later than given known revno (%d)'
961
% (revno, known_revno))
964
self, partial_history, stop_index=distance_from_known)
965
except errors.RevisionNotPresent, err:
966
if err.revision_id == known_revid:
967
# The start revision (known_revid) wasn't found.
969
# This is a stacked repository with no fallbacks, or a there's a
970
# left-hand ghost. Either way, even though the revision named in
971
# the error isn't in this repo, we know it's the next step in this
973
partial_history.append(err.revision_id)
974
if len(partial_history) <= distance_from_known:
975
# Didn't find enough history to get a revid for the revno.
976
earliest_revno = known_revno - len(partial_history) + 1
977
return (False, (earliest_revno, partial_history[-1]))
978
if len(partial_history) - 1 > distance_from_known:
979
raise AssertionError('_iter_for_revno returned too much history')
980
return (True, partial_history[-1])
982
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
983
def iter_reverse_revision_history(self, revision_id):
984
"""Iterate backwards through revision ids in the lefthand history
986
:param revision_id: The revision id to start with. All its lefthand
987
ancestors will be traversed.
989
graph = self.get_graph()
990
stop_revisions = (None, _mod_revision.NULL_REVISION)
991
return graph.iter_lefthand_ancestry(revision_id, stop_revisions)
994
"""Return True if this repository is flagged as a shared repository."""
995
raise NotImplementedError(self.is_shared)
998
def reconcile(self, other=None, thorough=False):
999
"""Reconcile this repository."""
1000
from bzrlib.reconcile import RepoReconciler
1001
reconciler = RepoReconciler(self, thorough=thorough)
1002
reconciler.reconcile()
1005
def _refresh_data(self):
1006
"""Helper called from lock_* to ensure coherency with disk.
1008
The default implementation does nothing; it is however possible
1009
for repositories to maintain loaded indices across multiple locks
1010
by checking inside their implementation of this method to see
1011
whether their indices are still valid. This depends of course on
1012
the disk format being validatable in this manner. This method is
1013
also called by the refresh_data() public interface to cause a refresh
1014
to occur while in a write lock so that data inserted by a smart server
1015
push operation is visible on the client's instance of the physical
1020
def revision_tree(self, revision_id):
1021
"""Return Tree for a revision on this branch.
1023
`revision_id` may be NULL_REVISION for the empty tree revision.
1025
raise NotImplementedError(self.revision_tree)
1027
def revision_trees(self, revision_ids):
1028
"""Return Trees for revisions in this repository.
1030
:param revision_ids: a sequence of revision-ids;
1031
a revision-id may not be None or 'null:'
1033
raise NotImplementedError(self.revision_trees)
1036
@symbol_versioning.deprecated_method(
1037
symbol_versioning.deprecated_in((2, 4, 0)))
1038
def get_ancestry(self, revision_id, topo_sorted=True):
1039
"""Return a list of revision-ids integrated by a revision.
1041
The first element of the list is always None, indicating the origin
1042
revision. This might change when we have history horizons, or
1043
perhaps we should have a new API.
1045
This is topologically sorted.
1047
if 'evil' in debug.debug_flags:
1048
mutter_callsite(2, "get_ancestry is linear with history.")
1049
if _mod_revision.is_null(revision_id):
1051
if not self.has_revision(revision_id):
1052
raise errors.NoSuchRevision(self, revision_id)
1053
graph = self.get_graph()
1055
search = graph._make_breadth_first_searcher([revision_id])
1058
found, ghosts = search.next_with_ghosts()
1059
except StopIteration:
1062
if _mod_revision.NULL_REVISION in keys:
1063
keys.remove(_mod_revision.NULL_REVISION)
1065
parent_map = graph.get_parent_map(keys)
1066
keys = tsort.topo_sort(parent_map)
1067
return [None] + list(keys)
1069
def pack(self, hint=None, clean_obsolete_packs=False):
1070
"""Compress the data within the repository.
1072
This operation only makes sense for some repository types. For other
1073
types it should be a no-op that just returns.
1075
This stub method does not require a lock, but subclasses should use
1076
@needs_write_lock as this is a long running call it's reasonable to
1077
implicitly lock for the user.
1079
:param hint: If not supplied, the whole repository is packed.
1080
If supplied, the repository may use the hint parameter as a
1081
hint for the parts of the repository to pack. A hint can be
1082
obtained from the result of commit_write_group(). Out of
1083
date hints are simply ignored, because concurrent operations
1084
can obsolete them rapidly.
1086
:param clean_obsolete_packs: Clean obsolete packs immediately after
1090
def get_transaction(self):
1091
return self.control_files.get_transaction()
1093
def get_parent_map(self, revision_ids):
1094
"""See graph.StackedParentsProvider.get_parent_map"""
1095
raise NotImplementedError(self.get_parent_map)
1097
def _get_parent_map_no_fallbacks(self, revision_ids):
1098
"""Same as Repository.get_parent_map except doesn't query fallbacks."""
1099
# revisions index works in keys; this just works in revisions
1100
# therefore wrap and unwrap
1103
for revision_id in revision_ids:
1104
if revision_id == _mod_revision.NULL_REVISION:
1105
result[revision_id] = ()
1106
elif revision_id is None:
1107
raise ValueError('get_parent_map(None) is not valid')
1109
query_keys.append((revision_id ,))
1110
vf = self.revisions.without_fallbacks()
1111
for ((revision_id,), parent_keys) in \
1112
vf.get_parent_map(query_keys).iteritems():
1114
result[revision_id] = tuple([parent_revid
1115
for (parent_revid,) in parent_keys])
1117
result[revision_id] = (_mod_revision.NULL_REVISION,)
1120
def _make_parents_provider(self):
1121
if not self._format.supports_external_lookups:
1123
return graph.StackedParentsProvider(_LazyListJoin(
1124
[self._make_parents_provider_unstacked()],
1125
self._fallback_repositories))
1127
def _make_parents_provider_unstacked(self):
1128
return graph.CallableToParentsProviderAdapter(
1129
self._get_parent_map_no_fallbacks)
1132
def get_known_graph_ancestry(self, revision_ids):
1133
"""Return the known graph for a set of revision ids and their ancestors.
1135
raise NotImplementedError(self.get_known_graph_ancestry)
1137
def get_file_graph(self):
1138
"""Return the graph walker for files."""
1139
raise NotImplementedError(self.get_file_graph)
1141
def get_graph(self, other_repository=None):
1142
"""Return the graph walker for this repository format"""
1143
parents_provider = self._make_parents_provider()
1144
if (other_repository is not None and
1145
not self.has_same_location(other_repository)):
1146
parents_provider = graph.StackedParentsProvider(
1147
[parents_provider, other_repository._make_parents_provider()])
1148
return graph.Graph(parents_provider)
1151
def set_make_working_trees(self, new_value):
1152
"""Set the policy flag for making working trees when creating branches.
1154
This only applies to branches that use this repository.
1156
The default is 'True'.
1157
:param new_value: True to restore the default, False to disable making
1160
raise NotImplementedError(self.set_make_working_trees)
1162
def make_working_trees(self):
1163
"""Returns the policy for making working trees on new branches."""
1164
raise NotImplementedError(self.make_working_trees)
1167
def sign_revision(self, revision_id, gpg_strategy):
1168
testament = _mod_testament.Testament.from_revision(self, revision_id)
1169
plaintext = testament.as_short_text()
1170
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1173
def verify_revision_signature(self, revision_id, gpg_strategy):
1174
"""Verify the signature on a revision.
1176
:param revision_id: the revision to verify
1177
:gpg_strategy: the GPGStrategy object to used
1179
:return: gpg.SIGNATURE_VALID or a failed SIGNATURE_ value
1181
if not self.has_signature_for_revision_id(revision_id):
1182
return gpg.SIGNATURE_NOT_SIGNED, None
1183
signature = self.get_signature_text(revision_id)
1185
testament = _mod_testament.Testament.from_revision(self, revision_id)
1186
plaintext = testament.as_short_text()
1188
return gpg_strategy.verify(signature, plaintext)
1190
def has_signature_for_revision_id(self, revision_id):
1191
"""Query for a revision signature for revision_id in the repository."""
1192
raise NotImplementedError(self.has_signature_for_revision_id)
1194
def get_signature_text(self, revision_id):
1195
"""Return the text for a signature."""
1196
raise NotImplementedError(self.get_signature_text)
1198
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
1199
"""Check consistency of all history of given revision_ids.
1201
Different repository implementations should override _check().
1203
:param revision_ids: A non-empty list of revision_ids whose ancestry
1204
will be checked. Typically the last revision_id of a branch.
1205
:param callback_refs: A dict of check-refs to resolve and callback
1206
the check/_check method on the items listed as wanting the ref.
1208
:param check_repo: If False do not check the repository contents, just
1209
calculate the data callback_refs requires and call them back.
1211
return self._check(revision_ids=revision_ids, callback_refs=callback_refs,
1212
check_repo=check_repo)
1214
def _check(self, revision_ids=None, callback_refs=None, check_repo=True):
1215
raise NotImplementedError(self.check)
1217
def _warn_if_deprecated(self, branch=None):
1218
if not self._format.is_deprecated():
1220
global _deprecation_warning_done
1221
if _deprecation_warning_done:
1225
conf = config.GlobalConfig()
1227
conf = branch.get_config()
1228
if conf.suppress_warning('format_deprecation'):
1230
warning("Format %s for %s is deprecated -"
1231
" please use 'bzr upgrade' to get better performance"
1232
% (self._format, self.bzrdir.transport.base))
1234
_deprecation_warning_done = True
1236
def supports_rich_root(self):
1237
return self._format.rich_root_data
1239
def _check_ascii_revisionid(self, revision_id, method):
1240
"""Private helper for ascii-only repositories."""
1241
# weave repositories refuse to store revisionids that are non-ascii.
1242
if revision_id is not None:
1243
# weaves require ascii revision ids.
1244
if isinstance(revision_id, unicode):
1246
revision_id.encode('ascii')
1247
except UnicodeEncodeError:
1248
raise errors.NonAsciiRevisionId(method, self)
1251
revision_id.decode('ascii')
1252
except UnicodeDecodeError:
1253
raise errors.NonAsciiRevisionId(method, self)
1256
class MetaDirRepository(Repository):
1257
"""Repositories in the new meta-dir layout.
1259
:ivar _transport: Transport for access to repository control files,
1260
typically pointing to .bzr/repository.
1263
def __init__(self, _format, a_bzrdir, control_files):
1264
super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
1265
self._transport = control_files._transport
1267
def is_shared(self):
1268
"""Return True if this repository is flagged as a shared repository."""
1269
return self._transport.has('shared-storage')
1272
def set_make_working_trees(self, new_value):
1273
"""Set the policy flag for making working trees when creating branches.
1275
This only applies to branches that use this repository.
1277
The default is 'True'.
1278
:param new_value: True to restore the default, False to disable making
1283
self._transport.delete('no-working-trees')
1284
except errors.NoSuchFile:
1287
self._transport.put_bytes('no-working-trees', '',
1288
mode=self.bzrdir._get_file_mode())
1290
def make_working_trees(self):
1291
"""Returns the policy for making working trees on new branches."""
1292
return not self._transport.has('no-working-trees')
1295
class RepositoryFormatRegistry(controldir.ControlComponentFormatRegistry):
1296
"""Repository format registry."""
1298
def get_default(self):
1299
"""Return the current default format."""
1300
return controldir.format_registry.make_bzrdir('default').repository_format
1303
network_format_registry = registry.FormatRegistry()
1304
"""Registry of formats indexed by their network name.
1306
The network name for a repository format is an identifier that can be used when
1307
referring to formats with smart server operations. See
1308
RepositoryFormat.network_name() for more detail.
1312
format_registry = RepositoryFormatRegistry(network_format_registry)
1313
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
1315
This can contain either format instances themselves, or classes/factories that
1316
can be called to obtain one.
1320
#####################################################################
1321
# Repository Formats
1323
class RepositoryFormat(controldir.ControlComponentFormat):
1324
"""A repository format.
1326
Formats provide four things:
1327
* An initialization routine to construct repository data on disk.
1328
* a optional format string which is used when the BzrDir supports
1330
* an open routine which returns a Repository instance.
1331
* A network name for referring to the format in smart server RPC
1334
There is one and only one Format subclass for each on-disk format. But
1335
there can be one Repository subclass that is used for several different
1336
formats. The _format attribute on a Repository instance can be used to
1337
determine the disk format.
1339
Formats are placed in a registry by their format string for reference
1340
during opening. These should be subclasses of RepositoryFormat for
1343
Once a format is deprecated, just deprecate the initialize and open
1344
methods on the format class. Do not deprecate the object, as the
1345
object may be created even when a repository instance hasn't been
1348
Common instance attributes:
1349
_matchingbzrdir - the controldir format that the repository format was
1350
originally written to work with. This can be used if manually
1351
constructing a bzrdir and repository, or more commonly for test suite
1355
# Set to True or False in derived classes. True indicates that the format
1356
# supports ghosts gracefully.
1357
supports_ghosts = None
1358
# Can this repository be given external locations to lookup additional
1359
# data. Set to True or False in derived classes.
1360
supports_external_lookups = None
1361
# Does this format support CHK bytestring lookups. Set to True or False in
1363
supports_chks = None
1364
# Should fetch trigger a reconcile after the fetch? Only needed for
1365
# some repository formats that can suffer internal inconsistencies.
1366
_fetch_reconcile = False
1367
# Does this format have < O(tree_size) delta generation. Used to hint what
1368
# code path for commit, amongst other things.
1370
# Does doing a pack operation compress data? Useful for the pack UI command
1371
# (so if there is one pack, the operation can still proceed because it may
1372
# help), and for fetching when data won't have come from the same
1374
pack_compresses = False
1375
# Does the repository storage understand references to trees?
1376
supports_tree_reference = None
1377
# Is the format experimental ?
1378
experimental = False
1379
# Does this repository format escape funky characters, or does it create
1380
# files with similar names as the versioned files in its contents on disk
1382
supports_funky_characters = None
1383
# Does this repository format support leaving locks?
1384
supports_leaving_lock = None
1385
# Does this format support the full VersionedFiles interface?
1386
supports_full_versioned_files = None
1387
# Does this format support signing revision signatures?
1388
supports_revision_signatures = True
1389
# Can the revision graph have incorrect parents?
1390
revision_graph_can_have_wrong_parents = None
1391
# Does this format support rich root data?
1392
rich_root_data = None
1393
# Does this format support explicitly versioned directories?
1394
supports_versioned_directories = None
1395
# Can other repositories be nested into one of this format?
1396
supports_nesting_repositories = None
1397
# Is it possible for revisions to be present without being referenced
1399
supports_unreferenced_revisions = None
1402
return "%s()" % self.__class__.__name__
1404
def __eq__(self, other):
1405
# format objects are generally stateless
1406
return isinstance(other, self.__class__)
1408
def __ne__(self, other):
1409
return not self == other
1412
def find_format(klass, a_bzrdir):
1413
"""Return the format for the repository object in a_bzrdir.
1415
This is used by bzr native formats that have a "format" file in
1416
the repository. Other methods may be used by different types of
1420
transport = a_bzrdir.get_repository_transport(None)
1421
format_string = transport.get_bytes("format")
1422
return format_registry.get(format_string)
1423
except errors.NoSuchFile:
1424
raise errors.NoRepositoryPresent(a_bzrdir)
1426
raise errors.UnknownFormatError(format=format_string,
1430
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1431
def register_format(klass, format):
1432
format_registry.register(format)
1435
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1436
def unregister_format(klass, format):
1437
format_registry.remove(format)
1440
@symbol_versioning.deprecated_method(symbol_versioning.deprecated_in((2, 4, 0)))
1441
def get_default_format(klass):
1442
"""Return the current default format."""
1443
return format_registry.get_default()
1445
def get_format_string(self):
1446
"""Return the ASCII format string that identifies this format.
1448
Note that in pre format ?? repositories the format string is
1449
not permitted nor written to disk.
1451
raise NotImplementedError(self.get_format_string)
1453
def get_format_description(self):
1454
"""Return the short description for this format."""
1455
raise NotImplementedError(self.get_format_description)
1457
def initialize(self, controldir, shared=False):
1458
"""Initialize a repository of this format in controldir.
1460
:param controldir: The controldir to put the new repository in it.
1461
:param shared: The repository should be initialized as a sharable one.
1462
:returns: The new repository object.
1464
This may raise UninitializableFormat if shared repository are not
1465
compatible the controldir.
1467
raise NotImplementedError(self.initialize)
1469
def is_supported(self):
1470
"""Is this format supported?
1472
Supported formats must be initializable and openable.
1473
Unsupported formats may not support initialization or committing or
1474
some other features depending on the reason for not being supported.
1478
def is_deprecated(self):
1479
"""Is this format deprecated?
1481
Deprecated formats may trigger a user-visible warning recommending
1482
the user to upgrade. They are still fully supported.
1486
def network_name(self):
1487
"""A simple byte string uniquely identifying this format for RPC calls.
1489
MetaDir repository formats use their disk format string to identify the
1490
repository over the wire. All in one formats such as bzr < 0.8, and
1491
foreign formats like svn/git and hg should use some marker which is
1492
unique and immutable.
1494
raise NotImplementedError(self.network_name)
1496
def check_conversion_target(self, target_format):
1497
if self.rich_root_data and not target_format.rich_root_data:
1498
raise errors.BadConversionTarget(
1499
'Does not support rich root data.', target_format,
1501
if (self.supports_tree_reference and
1502
not getattr(target_format, 'supports_tree_reference', False)):
1503
raise errors.BadConversionTarget(
1504
'Does not support nested trees', target_format,
1507
def open(self, controldir, _found=False):
1508
"""Return an instance of this format for a controldir.
1510
_found is a private parameter, do not use it.
1512
raise NotImplementedError(self.open)
1514
def _run_post_repo_init_hooks(self, repository, controldir, shared):
1515
from bzrlib.controldir import ControlDir, RepoInitHookParams
1516
hooks = ControlDir.hooks['post_repo_init']
1519
params = RepoInitHookParams(repository, self, controldir, shared)
1524
class MetaDirRepositoryFormat(RepositoryFormat):
1525
"""Common base class for the new repositories using the metadir layout."""
1527
rich_root_data = False
1528
supports_tree_reference = False
1529
supports_external_lookups = False
1530
supports_leaving_lock = True
1531
supports_nesting_repositories = True
1534
def _matchingbzrdir(self):
1535
matching = bzrdir.BzrDirMetaFormat1()
1536
matching.repository_format = self
1540
super(MetaDirRepositoryFormat, self).__init__()
1542
def _create_control_files(self, a_bzrdir):
1543
"""Create the required files and the initial control_files object."""
1544
# FIXME: RBC 20060125 don't peek under the covers
1545
# NB: no need to escape relative paths that are url safe.
1546
repository_transport = a_bzrdir.get_repository_transport(self)
1547
control_files = lockable_files.LockableFiles(repository_transport,
1548
'lock', lockdir.LockDir)
1549
control_files.create_lock()
1550
return control_files
1552
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
1553
"""Upload the initial blank content."""
1554
control_files = self._create_control_files(a_bzrdir)
1555
control_files.lock_write()
1556
transport = control_files._transport
1558
utf8_files += [('shared-storage', '')]
1560
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
1561
for (filename, content_stream) in files:
1562
transport.put_file(filename, content_stream,
1563
mode=a_bzrdir._get_file_mode())
1564
for (filename, content_bytes) in utf8_files:
1565
transport.put_bytes_non_atomic(filename, content_bytes,
1566
mode=a_bzrdir._get_file_mode())
1568
control_files.unlock()
1570
def network_name(self):
1571
"""Metadir formats have matching disk and network format strings."""
1572
return self.get_format_string()
1575
# formats which have no format string are not discoverable or independently
1576
# creatable on disk, so are not registered in format_registry. They're
1577
# all in bzrlib.repofmt.knitreponow. When an instance of one of these is
1578
# needed, it's constructed directly by the ControlDir. Non-native formats where
1579
# the repository is not separately opened are similar.
1581
format_registry.register_lazy(
1582
'Bazaar-NG Knit Repository Format 1',
1583
'bzrlib.repofmt.knitrepo',
1584
'RepositoryFormatKnit1',
1587
format_registry.register_lazy(
1588
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
1589
'bzrlib.repofmt.knitrepo',
1590
'RepositoryFormatKnit3',
1593
format_registry.register_lazy(
1594
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
1595
'bzrlib.repofmt.knitrepo',
1596
'RepositoryFormatKnit4',
1599
# Pack-based formats. There is one format for pre-subtrees, and one for
1600
# post-subtrees to allow ease of testing.
1601
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
1602
format_registry.register_lazy(
1603
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
1604
'bzrlib.repofmt.knitpack_repo',
1605
'RepositoryFormatKnitPack1',
1607
format_registry.register_lazy(
1608
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
1609
'bzrlib.repofmt.knitpack_repo',
1610
'RepositoryFormatKnitPack3',
1612
format_registry.register_lazy(
1613
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
1614
'bzrlib.repofmt.knitpack_repo',
1615
'RepositoryFormatKnitPack4',
1617
format_registry.register_lazy(
1618
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
1619
'bzrlib.repofmt.knitpack_repo',
1620
'RepositoryFormatKnitPack5',
1622
format_registry.register_lazy(
1623
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
1624
'bzrlib.repofmt.knitpack_repo',
1625
'RepositoryFormatKnitPack5RichRoot',
1627
format_registry.register_lazy(
1628
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
1629
'bzrlib.repofmt.knitpack_repo',
1630
'RepositoryFormatKnitPack5RichRootBroken',
1632
format_registry.register_lazy(
1633
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
1634
'bzrlib.repofmt.knitpack_repo',
1635
'RepositoryFormatKnitPack6',
1637
format_registry.register_lazy(
1638
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
1639
'bzrlib.repofmt.knitpack_repo',
1640
'RepositoryFormatKnitPack6RichRoot',
1642
format_registry.register_lazy(
1643
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
1644
'bzrlib.repofmt.groupcompress_repo',
1645
'RepositoryFormat2a',
1648
# Development formats.
1649
# Check their docstrings to see if/when they are obsolete.
1650
format_registry.register_lazy(
1651
("Bazaar development format 2 with subtree support "
1652
"(needs bzr.dev from before 1.8)\n"),
1653
'bzrlib.repofmt.knitpack_repo',
1654
'RepositoryFormatPackDevelopment2Subtree',
1656
format_registry.register_lazy(
1657
'Bazaar development format 8\n',
1658
'bzrlib.repofmt.groupcompress_repo',
1659
'RepositoryFormat2aSubtree',
1663
class InterRepository(InterObject):
1664
"""This class represents operations taking place between two repositories.
1666
Its instances have methods like copy_content and fetch, and contain
1667
references to the source and target repositories these operations can be
1670
Often we will provide convenience methods on 'repository' which carry out
1671
operations with another repository - they will always forward to
1672
InterRepository.get(other).method_name(parameters).
1676
"""The available optimised InterRepository types."""
1679
def copy_content(self, revision_id=None):
1680
"""Make a complete copy of the content in self into destination.
1682
This is a destructive operation! Do not use it on existing
1685
:param revision_id: Only copy the content needed to construct
1686
revision_id and its parents.
1689
self.target.set_make_working_trees(self.source.make_working_trees())
1690
except NotImplementedError:
1692
self.target.fetch(self.source, revision_id=revision_id)
1695
def fetch(self, revision_id=None, find_ghosts=False):
1696
"""Fetch the content required to construct revision_id.
1698
The content is copied from self.source to self.target.
1700
:param revision_id: if None all content is copied, if NULL_REVISION no
1704
raise NotImplementedError(self.fetch)
1707
def search_missing_revision_ids(self,
1708
revision_id=symbol_versioning.DEPRECATED_PARAMETER,
1709
find_ghosts=True, revision_ids=None, if_present_ids=None,
1711
"""Return the revision ids that source has that target does not.
1713
:param revision_id: only return revision ids included by this
1715
:param revision_ids: return revision ids included by these
1716
revision_ids. NoSuchRevision will be raised if any of these
1717
revisions are not present.
1718
:param if_present_ids: like revision_ids, but will not cause
1719
NoSuchRevision if any of these are absent, instead they will simply
1720
not be in the result. This is useful for e.g. finding revisions
1721
to fetch for tags, which may reference absent revisions.
1722
:param find_ghosts: If True find missing revisions in deep history
1723
rather than just finding the surface difference.
1724
:param limit: Maximum number of revisions to return, topologically
1726
:return: A bzrlib.graph.SearchResult.
1728
raise NotImplementedError(self.search_missing_revision_ids)
1731
def _same_model(source, target):
1732
"""True if source and target have the same data representation.
1734
Note: this is always called on the base class; overriding it in a
1735
subclass will have no effect.
1738
InterRepository._assert_same_model(source, target)
1740
except errors.IncompatibleRepositories, e:
1744
def _assert_same_model(source, target):
1745
"""Raise an exception if two repositories do not use the same model.
1747
if source.supports_rich_root() != target.supports_rich_root():
1748
raise errors.IncompatibleRepositories(source, target,
1749
"different rich-root support")
1750
if source._serializer != target._serializer:
1751
raise errors.IncompatibleRepositories(source, target,
1752
"different serializers")
1755
class CopyConverter(object):
1756
"""A repository conversion tool which just performs a copy of the content.
1758
This is slow but quite reliable.
1761
def __init__(self, target_format):
1762
"""Create a CopyConverter.
1764
:param target_format: The format the resulting repository should be.
1766
self.target_format = target_format
1768
def convert(self, repo, pb):
1769
"""Perform the conversion of to_convert, giving feedback via pb.
1771
:param to_convert: The disk object to convert.
1772
:param pb: a progress bar to use for progress information.
1774
pb = ui.ui_factory.nested_progress_bar()
1777
# this is only useful with metadir layouts - separated repo content.
1778
# trigger an assertion if not such
1779
repo._format.get_format_string()
1780
self.repo_dir = repo.bzrdir
1781
pb.update(gettext('Moving repository to repository.backup'))
1782
self.repo_dir.transport.move('repository', 'repository.backup')
1783
backup_transport = self.repo_dir.transport.clone('repository.backup')
1784
repo._format.check_conversion_target(self.target_format)
1785
self.source_repo = repo._format.open(self.repo_dir,
1787
_override_transport=backup_transport)
1788
pb.update(gettext('Creating new repository'))
1789
converted = self.target_format.initialize(self.repo_dir,
1790
self.source_repo.is_shared())
1791
converted.lock_write()
1793
pb.update(gettext('Copying content'))
1794
self.source_repo.copy_content_into(converted)
1797
pb.update(gettext('Deleting old repository content'))
1798
self.repo_dir.transport.delete_tree('repository.backup')
1799
ui.ui_factory.note(gettext('repository converted'))
1803
def _strip_NULL_ghosts(revision_graph):
1804
"""Also don't use this. more compatibility code for unmigrated clients."""
1805
# Filter ghosts, and null:
1806
if _mod_revision.NULL_REVISION in revision_graph:
1807
del revision_graph[_mod_revision.NULL_REVISION]
1808
for key, parents in revision_graph.items():
1809
revision_graph[key] = tuple(parent for parent in parents if parent
1811
return revision_graph
1814
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
1815
stop_revision=None):
1816
"""Extend the partial history to include a given index
1818
If a stop_index is supplied, stop when that index has been reached.
1819
If a stop_revision is supplied, stop when that revision is
1820
encountered. Otherwise, stop when the beginning of history is
1823
:param stop_index: The index which should be present. When it is
1824
present, history extension will stop.
1825
:param stop_revision: The revision id which should be present. When
1826
it is encountered, history extension will stop.
1828
start_revision = partial_history_cache[-1]
1829
graph = repo.get_graph()
1830
iterator = graph.iter_lefthand_ancestry(start_revision,
1831
(_mod_revision.NULL_REVISION,))
1833
# skip the last revision in the list
1836
if (stop_index is not None and
1837
len(partial_history_cache) > stop_index):
1839
if partial_history_cache[-1] == stop_revision:
1841
revision_id = iterator.next()
1842
partial_history_cache.append(revision_id)
1843
except StopIteration:
1848
class _LazyListJoin(object):
1849
"""An iterable yielding the contents of many lists as one list.
1851
Each iterator made from this will reflect the current contents of the lists
1852
at the time the iterator is made.
1854
This is used by Repository's _make_parents_provider implementation so that
1857
pp = repo._make_parents_provider() # uses a list of fallback repos
1858
pp.add_fallback_repository(other_repo) # appends to that list
1859
result = pp.get_parent_map(...)
1860
# The result will include revs from other_repo
1863
def __init__(self, *list_parts):
1864
self.list_parts = list_parts
1868
for list_part in self.list_parts:
1869
full_list.extend(list_part)
1870
return iter(full_list)
1873
return "%s.%s(%s)" % (self.__module__, self.__class__.__name__,
added
removed
bzrlib/repository.py
