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# Copyright (C) 2005, 2006 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from binascii import hexlify
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from copy import deepcopy
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from cStringIO import StringIO
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from unittest import TestSuite
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import bzrlib.bzrdir as bzrdir
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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import bzrlib.errors as errors
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from bzrlib.errors import InvalidRevisionId
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import bzrlib.gpg as gpg
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from bzrlib.graph import Graph
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from bzrlib.inter import InterObject
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from bzrlib.inventory import Inventory
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from bzrlib.knit import KnitVersionedFile, KnitPlainFactory
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.lockdir import LockDir
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from bzrlib.osutils import (safe_unicode, rand_bytes, compact_date,
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from bzrlib.revision import NULL_REVISION, Revision
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from bzrlib.store.versioned import VersionedFileStore, WeaveStore
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from bzrlib.store.text import TextStore
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from bzrlib.symbol_versioning import *
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from bzrlib.trace import mutter, note
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from bzrlib.tree import RevisionTree
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from bzrlib.tsort import topo_sort
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from bzrlib.testament import Testament
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from bzrlib.tree import EmptyTree
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from bzrlib.weave import WeaveFile
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class Repository(object):
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"""Repository holding history for one or more branches.
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The repository holds and retrieves historical information including
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revisions and file history. It's normally accessed only by the Branch,
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which views a particular line of development through that history.
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The Repository builds on top of Stores and a Transport, which respectively
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describe the disk data format and the way of accessing the (possibly
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def add_inventory(self, revid, inv, parents):
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"""Add the inventory inv to the repository as revid.
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:param parents: The revision ids of the parents that revid
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is known to have and are in the repository already.
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returns the sha1 of the serialized inventory.
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assert inv.revision_id is None or inv.revision_id == revid, \
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"Mismatch between inventory revision" \
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" id and insertion revid (%r, %r)" % (inv.revision_id, revid)
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inv_text = bzrlib.xml5.serializer_v5.write_inventory_to_string(inv)
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inv_sha1 = bzrlib.osutils.sha_string(inv_text)
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inv_vf = self.control_weaves.get_weave('inventory',
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self.get_transaction())
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self._inventory_add_lines(inv_vf, revid, parents, bzrlib.osutils.split_lines(inv_text))
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def _inventory_add_lines(self, inv_vf, revid, parents, lines):
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for parent in parents:
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final_parents.append(parent)
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inv_vf.add_lines(revid, final_parents, lines)
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def add_revision(self, rev_id, rev, inv=None, config=None):
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"""Add rev to the revision store as rev_id.
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:param rev_id: the revision id to use.
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:param rev: The revision object.
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:param inv: The inventory for the revision. if None, it will be looked
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up in the inventory storer
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:param config: If None no digital signature will be created.
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If supplied its signature_needed method will be used
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to determine if a signature should be made.
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if config is not None and config.signature_needed():
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inv = self.get_inventory(rev_id)
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plaintext = Testament(rev, inv).as_short_text()
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self.store_revision_signature(
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gpg.GPGStrategy(config), plaintext, rev_id)
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if not rev_id in self.get_inventory_weave():
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raise errors.WeaveRevisionNotPresent(rev_id,
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self.get_inventory_weave())
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# yes, this is not suitable for adding with ghosts.
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self.add_inventory(rev_id, inv, rev.parent_ids)
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self._revision_store.add_revision(rev, self.get_transaction())
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def _all_possible_ids(self):
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"""Return all the possible revisions that we could find."""
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return self.get_inventory_weave().versions()
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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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present: for weaves ghosts may lead to a lack of correctness until
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the reweave updates the parents list.
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if self._revision_store.text_store.listable():
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return self._revision_store.all_revision_ids(self.get_transaction())
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result = self._all_possible_ids()
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return self._eliminate_revisions_not_present(result)
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def break_lock(self):
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"""Break a lock if one is present from another instance.
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Uses the ui factory to ask for confirmation if the lock may be from
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self.control_files.break_lock()
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def _eliminate_revisions_not_present(self, revision_ids):
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"""Check every revision id in revision_ids to see if we have it.
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Returns a set of the present revisions.
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for id in revision_ids:
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if self.has_revision(id):
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def create(a_bzrdir):
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"""Construct the current default format repository in a_bzrdir."""
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return RepositoryFormat.get_default_format().initialize(a_bzrdir)
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def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
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"""instantiate a Repository.
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:param _format: The format of the repository on disk.
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:param a_bzrdir: The BzrDir of the repository.
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In the future we will have a single api for all stores for
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getting file texts, inventories and revisions, then
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this construct will accept instances of those things.
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super(Repository, self).__init__()
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self._format = _format
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# the following are part of the public API for Repository:
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self.bzrdir = a_bzrdir
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self.control_files = control_files
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self._revision_store = _revision_store
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self.text_store = text_store
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# backwards compatability
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self.weave_store = text_store
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# not right yet - should be more semantically clear ?
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self.control_store = control_store
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self.control_weaves = control_store
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# TODO: make sure to construct the right store classes, etc, depending
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# on whether escaping is required.
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return '%s(%r)' % (self.__class__.__name__,
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self.bzrdir.transport.base)
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return self.control_files.is_locked()
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def lock_write(self):
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self.control_files.lock_write()
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self.control_files.lock_read()
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def get_physical_lock_status(self):
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return self.control_files.get_physical_lock_status()
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def missing_revision_ids(self, other, revision_id=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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return InterRepository.get(other, self).missing_revision_ids(revision_id)
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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 = bzrlib.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, basis=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, basis)
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def fetch(self, source, revision_id=None, pb=None):
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"""Fetch the content required to construct revision_id from source.
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If revision_id is None all content is copied.
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return InterRepository.get(source, self).fetch(revision_id=revision_id,
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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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"""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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return CommitBuilder(self, parents, config, timestamp, timezone,
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committer, revprops, revision_id)
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self.control_files.unlock()
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def clone(self, a_bzrdir, revision_id=None, basis=None):
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"""Clone this repository into a_bzrdir using the current format.
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Currently no check is made that the format of this repository and
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the bzrdir format are compatible. FIXME RBC 20060201.
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if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
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# use target default format.
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result = a_bzrdir.create_repository()
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# FIXME RBC 20060209 split out the repository type to avoid this check ?
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elif isinstance(a_bzrdir._format,
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(bzrlib.bzrdir.BzrDirFormat4,
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bzrlib.bzrdir.BzrDirFormat5,
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bzrlib.bzrdir.BzrDirFormat6)):
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result = a_bzrdir.open_repository()
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result = self._format.initialize(a_bzrdir, shared=self.is_shared())
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self.copy_content_into(result, revision_id, basis)
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def has_revision(self, revision_id):
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"""True if this repository has a copy of the revision."""
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return self._revision_store.has_revision_id(revision_id,
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self.get_transaction())
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def get_revision_reconcile(self, revision_id):
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"""'reconcile' helper routine that allows access to a revision always.
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This variant of get_revision does not cross check the weave graph
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against the revision one as get_revision does: but it should only
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be used by reconcile, or reconcile-alike commands that are correcting
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or testing the revision graph.
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if not revision_id or not isinstance(revision_id, basestring):
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raise InvalidRevisionId(revision_id=revision_id, branch=self)
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return self._revision_store.get_revisions([revision_id],
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self.get_transaction())[0]
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def get_revisions(self, revision_ids):
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return self._revision_store.get_revisions(revision_ids,
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self.get_transaction())
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def get_revision_xml(self, revision_id):
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rev = self.get_revision(revision_id)
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# the current serializer..
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self._revision_store._serializer.write_revision(rev, rev_tmp)
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return rev_tmp.getvalue()
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def get_revision(self, revision_id):
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"""Return the Revision object for a named revision"""
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r = self.get_revision_reconcile(revision_id)
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# weave corruption can lead to absent revision markers that should be
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# the following test is reasonably cheap (it needs a single weave read)
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# and the weave is cached in read transactions. In write transactions
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# it is not cached but typically we only read a small number of
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# revisions. For knits when they are introduced we will probably want
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# to ensure that caching write transactions are in use.
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inv = self.get_inventory_weave()
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self._check_revision_parents(r, inv)
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def _check_revision_parents(self, revision, inventory):
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"""Private to Repository and Fetch.
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This checks the parentage of revision in an inventory weave for
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consistency and is only applicable to inventory-weave-for-ancestry
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using repository formats & fetchers.
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weave_parents = inventory.get_parents(revision.revision_id)
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weave_names = inventory.versions()
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for parent_id in revision.parent_ids:
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if parent_id in weave_names:
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# this parent must not be a ghost.
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if not parent_id in weave_parents:
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raise errors.CorruptRepository(self)
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def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
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signature = gpg_strategy.sign(plaintext)
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self._revision_store.add_revision_signature_text(revision_id,
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self.get_transaction())
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def fileids_altered_by_revision_ids(self, revision_ids):
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"""Find the file ids and versions affected by revisions.
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:param revisions: an iterable containing revision ids.
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:return: a dictionary mapping altered file-ids to an iterable of
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revision_ids. Each altered file-ids has the exact revision_ids that
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altered it listed explicitly.
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assert isinstance(self._format, (RepositoryFormat5,
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RepositoryFormatKnit1)), \
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"fileid_involved only supported for branches which store inventory as unnested xml"
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selected_revision_ids = set(revision_ids)
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w = self.get_inventory_weave()
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# this code needs to read every new line in every inventory for the
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# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
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# not pesent in one of those inventories is unnecessary but not
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# harmful because we are filtering by the revision id marker in the
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# inventory lines : we only select file ids altered in one of those
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# revisions. We dont need to see all lines in the inventory because
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# only those added in an inventory in rev X can contain a revision=X
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for line in w.iter_lines_added_or_present_in_versions(selected_revision_ids):
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start = line.find('file_id="')+9
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if start < 9: continue
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end = line.find('"', start)
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file_id = _unescape_xml(line[start:end])
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start = line.find('revision="')+10
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if start < 10: continue
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end = line.find('"', start)
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revision_id = _unescape_xml(line[start:end])
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if revision_id in selected_revision_ids:
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result.setdefault(file_id, set()).add(revision_id)
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def get_inventory_weave(self):
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return self.control_weaves.get_weave('inventory',
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self.get_transaction())
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def get_inventory(self, revision_id):
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"""Get Inventory object by hash."""
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return self.deserialise_inventory(
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revision_id, self.get_inventory_xml(revision_id))
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def deserialise_inventory(self, revision_id, xml):
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"""Transform the xml into an inventory object.
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:param revision_id: The expected revision id of the inventory.
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:param xml: A serialised inventory.
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return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
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def get_inventory_xml(self, revision_id):
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"""Get inventory XML as a file object."""
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assert isinstance(revision_id, basestring), type(revision_id)
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iw = self.get_inventory_weave()
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return iw.get_text(revision_id)
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raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
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def get_inventory_sha1(self, revision_id):
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"""Return the sha1 hash of the inventory entry
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return self.get_revision(revision_id).inventory_sha1
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def get_revision_graph(self, revision_id=None):
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"""Return a dictionary containing the revision graph.
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:return: a dictionary of revision_id->revision_parents_list.
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weave = self.get_inventory_weave()
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all_revisions = self._eliminate_revisions_not_present(weave.versions())
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entire_graph = dict([(node, weave.get_parents(node)) for
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node in all_revisions])
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if revision_id is None:
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elif revision_id not in entire_graph:
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raise errors.NoSuchRevision(self, revision_id)
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# add what can be reached from revision_id
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pending = set([revision_id])
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while len(pending) > 0:
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result[node] = entire_graph[node]
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for revision_id in result[node]:
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if revision_id not in result:
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pending.add(revision_id)
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def get_revision_graph_with_ghosts(self, revision_ids=None):
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"""Return a graph of the revisions with ghosts marked as applicable.
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:param revision_ids: an iterable of revisions to graph or None for all.
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:return: a Graph object with the graph reachable from revision_ids.
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pending = set(self.all_revision_ids())
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pending = set(revision_ids)
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required = set(revision_ids)
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revision_id = pending.pop()
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rev = self.get_revision(revision_id)
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except errors.NoSuchRevision:
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if revision_id in required:
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result.add_ghost(revision_id)
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for parent_id in rev.parent_ids:
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# is this queued or done ?
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if (parent_id not in pending and
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parent_id not in done):
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pending.add(parent_id)
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result.add_node(revision_id, rev.parent_ids)
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done.add(revision_id)
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def get_revision_inventory(self, revision_id):
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"""Return inventory of a past revision."""
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# TODO: Unify this with get_inventory()
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# bzr 0.0.6 and later imposes the constraint that the inventory_id
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# must be the same as its revision, so this is trivial.
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if revision_id is None:
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# This does not make sense: if there is no revision,
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# then it is the current tree inventory surely ?!
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# and thus get_root_id() is something that looks at the last
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# commit on the branch, and the get_root_id is an inventory check.
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raise NotImplementedError
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# return Inventory(self.get_root_id())
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return self.get_inventory(revision_id)
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"""Return True if this repository is flagged as a shared repository."""
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raise NotImplementedError(self.is_shared)
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def reconcile(self, other=None, thorough=False):
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"""Reconcile this repository."""
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from bzrlib.reconcile import RepoReconciler
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reconciler = RepoReconciler(self, thorough=thorough)
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reconciler.reconcile()
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def revision_tree(self, revision_id):
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"""Return Tree for a revision on this branch.
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`revision_id` may be None for the null revision, in which case
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an `EmptyTree` is returned."""
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# TODO: refactor this to use an existing revision object
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# so we don't need to read it in twice.
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if revision_id is None or revision_id == NULL_REVISION:
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inv = self.get_revision_inventory(revision_id)
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return RevisionTree(self, inv, revision_id)
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def get_ancestry(self, revision_id):
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"""Return a list of revision-ids integrated by a revision.
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This is topologically sorted.
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if revision_id is None:
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if not self.has_revision(revision_id):
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raise errors.NoSuchRevision(self, revision_id)
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w = self.get_inventory_weave()
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candidates = w.get_ancestry(revision_id)
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return [None] + candidates # self._eliminate_revisions_not_present(candidates)
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def print_file(self, file, revision_id):
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"""Print `file` to stdout.
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FIXME RBC 20060125 as John Meinel points out this is a bad api
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- it writes to stdout, it assumes that that is valid etc. Fix
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by creating a new more flexible convenience function.
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tree = self.revision_tree(revision_id)
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# use inventory as it was in that revision
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file_id = tree.inventory.path2id(file)
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# TODO: jam 20060427 Write a test for this code path
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# it had a bug in it, and was raising the wrong
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raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
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tree.print_file(file_id)
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def get_transaction(self):
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return self.control_files.get_transaction()
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def revision_parents(self, revid):
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return self.get_inventory_weave().parent_names(revid)
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def set_make_working_trees(self, new_value):
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"""Set the policy flag for making working trees when creating branches.
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This only applies to branches that use this repository.
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The default is 'True'.
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:param new_value: True to restore the default, False to disable making
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raise NotImplementedError(self.set_make_working_trees)
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def make_working_trees(self):
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"""Returns the policy for making working trees on new branches."""
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raise NotImplementedError(self.make_working_trees)
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def sign_revision(self, revision_id, gpg_strategy):
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plaintext = Testament.from_revision(self, revision_id).as_short_text()
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self.store_revision_signature(gpg_strategy, plaintext, revision_id)
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def has_signature_for_revision_id(self, revision_id):
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"""Query for a revision signature for revision_id in the repository."""
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return self._revision_store.has_signature(revision_id,
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self.get_transaction())
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def get_signature_text(self, revision_id):
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"""Return the text for a signature."""
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return self._revision_store.get_signature_text(revision_id,
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self.get_transaction())
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class AllInOneRepository(Repository):
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"""Legacy support - the repository behaviour for all-in-one branches."""
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def __init__(self, _format, a_bzrdir, _revision_store, control_store, text_store):
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# we reuse one control files instance.
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dir_mode = a_bzrdir._control_files._dir_mode
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file_mode = a_bzrdir._control_files._file_mode
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def get_store(name, compressed=True, prefixed=False):
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# FIXME: This approach of assuming stores are all entirely compressed
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# or entirely uncompressed is tidy, but breaks upgrade from
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# some existing branches where there's a mixture; we probably
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# still want the option to look for both.
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relpath = a_bzrdir._control_files._escape(name)
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store = TextStore(a_bzrdir._control_files._transport.clone(relpath),
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prefixed=prefixed, compressed=compressed,
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#if self._transport.should_cache():
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# cache_path = os.path.join(self.cache_root, name)
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# os.mkdir(cache_path)
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# store = bzrlib.store.CachedStore(store, cache_path)
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# not broken out yet because the controlweaves|inventory_store
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# and text_store | weave_store bits are still different.
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if isinstance(_format, RepositoryFormat4):
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# cannot remove these - there is still no consistent api
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# which allows access to this old info.
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self.inventory_store = get_store('inventory-store')
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text_store = get_store('text-store')
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super(AllInOneRepository, self).__init__(_format, a_bzrdir, a_bzrdir._control_files, _revision_store, control_store, text_store)
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"""AllInOne repositories cannot be shared."""
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def set_make_working_trees(self, new_value):
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"""Set the policy flag for making working trees when creating branches.
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This only applies to branches that use this repository.
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The default is 'True'.
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:param new_value: True to restore the default, False to disable making
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raise NotImplementedError(self.set_make_working_trees)
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def make_working_trees(self):
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"""Returns the policy for making working trees on new branches."""
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def install_revision(repository, rev, revision_tree):
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"""Install all revision data into a repository."""
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for p_id in rev.parent_ids:
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if repository.has_revision(p_id):
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present_parents.append(p_id)
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parent_trees[p_id] = repository.revision_tree(p_id)
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parent_trees[p_id] = EmptyTree()
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inv = revision_tree.inventory
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# Add the texts that are not already present
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for path, ie in inv.iter_entries():
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w = repository.weave_store.get_weave_or_empty(ie.file_id,
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repository.get_transaction())
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if ie.revision not in w:
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# FIXME: TODO: The following loop *may* be overlapping/duplicate
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# with inventoryEntry.find_previous_heads(). if it is, then there
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# is a latent bug here where the parents may have ancestors of each
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for revision, tree in parent_trees.iteritems():
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if ie.file_id not in tree:
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parent_id = tree.inventory[ie.file_id].revision
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if parent_id in text_parents:
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text_parents.append(parent_id)
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vfile = repository.weave_store.get_weave_or_empty(ie.file_id,
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repository.get_transaction())
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lines = revision_tree.get_file(ie.file_id).readlines()
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vfile.add_lines(rev.revision_id, text_parents, lines)
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# install the inventory
694
repository.add_inventory(rev.revision_id, inv, present_parents)
695
except errors.RevisionAlreadyPresent:
697
repository.add_revision(rev.revision_id, rev, inv)
700
class MetaDirRepository(Repository):
701
"""Repositories in the new meta-dir layout."""
703
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
704
super(MetaDirRepository, self).__init__(_format,
711
dir_mode = self.control_files._dir_mode
712
file_mode = self.control_files._file_mode
716
"""Return True if this repository is flagged as a shared repository."""
717
return self.control_files._transport.has('shared-storage')
720
def set_make_working_trees(self, new_value):
721
"""Set the policy flag for making working trees when creating branches.
723
This only applies to branches that use this repository.
725
The default is 'True'.
726
:param new_value: True to restore the default, False to disable making
731
self.control_files._transport.delete('no-working-trees')
732
except errors.NoSuchFile:
735
self.control_files.put_utf8('no-working-trees', '')
737
def make_working_trees(self):
738
"""Returns the policy for making working trees on new branches."""
739
return not self.control_files._transport.has('no-working-trees')
742
class KnitRepository(MetaDirRepository):
743
"""Knit format repository."""
745
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
746
inv_vf.add_lines_with_ghosts(revid, parents, lines)
749
def all_revision_ids(self):
750
"""See Repository.all_revision_ids()."""
751
return self._revision_store.all_revision_ids(self.get_transaction())
753
def fileid_involved_between_revs(self, from_revid, to_revid):
754
"""Find file_id(s) which are involved in the changes between revisions.
756
This determines the set of revisions which are involved, and then
757
finds all file ids affected by those revisions.
759
vf = self._get_revision_vf()
760
from_set = set(vf.get_ancestry(from_revid))
761
to_set = set(vf.get_ancestry(to_revid))
762
changed = to_set.difference(from_set)
763
return self._fileid_involved_by_set(changed)
765
def fileid_involved(self, last_revid=None):
766
"""Find all file_ids modified in the ancestry of last_revid.
768
:param last_revid: If None, last_revision() will be used.
771
changed = set(self.all_revision_ids())
773
changed = set(self.get_ancestry(last_revid))
776
return self._fileid_involved_by_set(changed)
779
def get_ancestry(self, revision_id):
780
"""Return a list of revision-ids integrated by a revision.
782
This is topologically sorted.
784
if revision_id is None:
786
vf = self._get_revision_vf()
788
return [None] + vf.get_ancestry(revision_id)
789
except errors.RevisionNotPresent:
790
raise errors.NoSuchRevision(self, revision_id)
793
def get_revision(self, revision_id):
794
"""Return the Revision object for a named revision"""
795
return self.get_revision_reconcile(revision_id)
798
def get_revision_graph(self, revision_id=None):
799
"""Return a dictionary containing the revision graph.
801
:return: a dictionary of revision_id->revision_parents_list.
803
weave = self._get_revision_vf()
804
entire_graph = weave.get_graph()
805
if revision_id is None:
806
return weave.get_graph()
807
elif revision_id not in weave:
808
raise errors.NoSuchRevision(self, revision_id)
810
# add what can be reached from revision_id
812
pending = set([revision_id])
813
while len(pending) > 0:
815
result[node] = weave.get_parents(node)
816
for revision_id in result[node]:
817
if revision_id not in result:
818
pending.add(revision_id)
822
def get_revision_graph_with_ghosts(self, revision_ids=None):
823
"""Return a graph of the revisions with ghosts marked as applicable.
825
:param revision_ids: an iterable of revisions to graph or None for all.
826
:return: a Graph object with the graph reachable from revision_ids.
829
vf = self._get_revision_vf()
830
versions = set(vf.versions())
832
pending = set(self.all_revision_ids())
835
pending = set(revision_ids)
836
required = set(revision_ids)
839
revision_id = pending.pop()
840
if not revision_id in versions:
841
if revision_id in required:
842
raise errors.NoSuchRevision(self, revision_id)
844
result.add_ghost(revision_id)
845
# mark it as done so we dont try for it again.
846
done.add(revision_id)
848
parent_ids = vf.get_parents_with_ghosts(revision_id)
849
for parent_id in parent_ids:
850
# is this queued or done ?
851
if (parent_id not in pending and
852
parent_id not in done):
854
pending.add(parent_id)
855
result.add_node(revision_id, parent_ids)
856
done.add(revision_id)
859
def _get_revision_vf(self):
860
""":return: a versioned file containing the revisions."""
861
vf = self._revision_store.get_revision_file(self.get_transaction())
865
def reconcile(self, other=None, thorough=False):
866
"""Reconcile this repository."""
867
from bzrlib.reconcile import KnitReconciler
868
reconciler = KnitReconciler(self, thorough=thorough)
869
reconciler.reconcile()
872
def revision_parents(self, revid):
873
return self._get_revision_vf().get_parents(rev_id)
875
class RepositoryFormat(object):
876
"""A repository format.
878
Formats provide three things:
879
* An initialization routine to construct repository data on disk.
880
* a format string which is used when the BzrDir supports versioned
882
* an open routine which returns a Repository instance.
884
Formats are placed in an dict by their format string for reference
885
during opening. These should be subclasses of RepositoryFormat
888
Once a format is deprecated, just deprecate the initialize and open
889
methods on the format class. Do not deprecate the object, as the
890
object will be created every system load.
892
Common instance attributes:
893
_matchingbzrdir - the bzrdir format that the repository format was
894
originally written to work with. This can be used if manually
895
constructing a bzrdir and repository, or more commonly for test suite
899
_default_format = None
900
"""The default format used for new repositories."""
903
"""The known formats."""
906
def find_format(klass, a_bzrdir):
907
"""Return the format for the repository object in a_bzrdir."""
909
transport = a_bzrdir.get_repository_transport(None)
910
format_string = transport.get("format").read()
911
return klass._formats[format_string]
912
except errors.NoSuchFile:
913
raise errors.NoRepositoryPresent(a_bzrdir)
915
raise errors.UnknownFormatError(format_string)
917
def _get_control_store(self, repo_transport, control_files):
918
"""Return the control store for this repository."""
919
raise NotImplementedError(self._get_control_store)
922
def get_default_format(klass):
923
"""Return the current default format."""
924
return klass._default_format
926
def get_format_string(self):
927
"""Return the ASCII format string that identifies this format.
929
Note that in pre format ?? repositories the format string is
930
not permitted nor written to disk.
932
raise NotImplementedError(self.get_format_string)
934
def get_format_description(self):
935
"""Return the short desciption for this format."""
936
raise NotImplementedError(self.get_format_description)
938
def _get_revision_store(self, repo_transport, control_files):
939
"""Return the revision store object for this a_bzrdir."""
940
raise NotImplementedError(self._get_revision_store)
942
def _get_text_rev_store(self,
949
"""Common logic for getting a revision store for a repository.
951
see self._get_revision_store for the subclass-overridable method to
952
get the store for a repository.
954
from bzrlib.store.revision.text import TextRevisionStore
955
dir_mode = control_files._dir_mode
956
file_mode = control_files._file_mode
957
text_store =TextStore(transport.clone(name),
959
compressed=compressed,
962
_revision_store = TextRevisionStore(text_store, serializer)
963
return _revision_store
965
def _get_versioned_file_store(self,
970
versionedfile_class=WeaveFile,
972
weave_transport = control_files._transport.clone(name)
973
dir_mode = control_files._dir_mode
974
file_mode = control_files._file_mode
975
return VersionedFileStore(weave_transport, prefixed=prefixed,
978
versionedfile_class=versionedfile_class,
981
def initialize(self, a_bzrdir, shared=False):
982
"""Initialize a repository of this format in a_bzrdir.
984
:param a_bzrdir: The bzrdir to put the new repository in it.
985
:param shared: The repository should be initialized as a sharable one.
987
This may raise UninitializableFormat if shared repository are not
988
compatible the a_bzrdir.
991
def is_supported(self):
992
"""Is this format supported?
994
Supported formats must be initializable and openable.
995
Unsupported formats may not support initialization or committing or
996
some other features depending on the reason for not being supported.
1000
def open(self, a_bzrdir, _found=False):
1001
"""Return an instance of this format for the bzrdir a_bzrdir.
1003
_found is a private parameter, do not use it.
1005
raise NotImplementedError(self.open)
1008
def register_format(klass, format):
1009
klass._formats[format.get_format_string()] = format
1012
def set_default_format(klass, format):
1013
klass._default_format = format
1016
def unregister_format(klass, format):
1017
assert klass._formats[format.get_format_string()] is format
1018
del klass._formats[format.get_format_string()]
1021
class PreSplitOutRepositoryFormat(RepositoryFormat):
1022
"""Base class for the pre split out repository formats."""
1024
def initialize(self, a_bzrdir, shared=False, _internal=False):
1025
"""Create a weave repository.
1027
TODO: when creating split out bzr branch formats, move this to a common
1028
base for Format5, Format6. or something like that.
1030
from bzrlib.weavefile import write_weave_v5
1031
from bzrlib.weave import Weave
1034
raise errors.IncompatibleFormat(self, a_bzrdir._format)
1037
# always initialized when the bzrdir is.
1038
return self.open(a_bzrdir, _found=True)
1040
# Create an empty weave
1042
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1043
empty_weave = sio.getvalue()
1045
mutter('creating repository in %s.', a_bzrdir.transport.base)
1046
dirs = ['revision-store', 'weaves']
1047
files = [('inventory.weave', StringIO(empty_weave)),
1050
# FIXME: RBC 20060125 dont peek under the covers
1051
# NB: no need to escape relative paths that are url safe.
1052
control_files = LockableFiles(a_bzrdir.transport, 'branch-lock',
1054
control_files.create_lock()
1055
control_files.lock_write()
1056
control_files._transport.mkdir_multi(dirs,
1057
mode=control_files._dir_mode)
1059
for file, content in files:
1060
control_files.put(file, content)
1062
control_files.unlock()
1063
return self.open(a_bzrdir, _found=True)
1065
def _get_control_store(self, repo_transport, control_files):
1066
"""Return the control store for this repository."""
1067
return self._get_versioned_file_store('',
1072
def _get_text_store(self, transport, control_files):
1073
"""Get a store for file texts for this format."""
1074
raise NotImplementedError(self._get_text_store)
1076
def open(self, a_bzrdir, _found=False):
1077
"""See RepositoryFormat.open()."""
1079
# we are being called directly and must probe.
1080
raise NotImplementedError
1082
repo_transport = a_bzrdir.get_repository_transport(None)
1083
control_files = a_bzrdir._control_files
1084
text_store = self._get_text_store(repo_transport, control_files)
1085
control_store = self._get_control_store(repo_transport, control_files)
1086
_revision_store = self._get_revision_store(repo_transport, control_files)
1087
return AllInOneRepository(_format=self,
1089
_revision_store=_revision_store,
1090
control_store=control_store,
1091
text_store=text_store)
1094
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1095
"""Bzr repository format 4.
1097
This repository format has:
1099
- TextStores for texts, inventories,revisions.
1101
This format is deprecated: it indexes texts using a text id which is
1102
removed in format 5; initializationa and write support for this format
1107
super(RepositoryFormat4, self).__init__()
1108
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat4()
1110
def get_format_description(self):
1111
"""See RepositoryFormat.get_format_description()."""
1112
return "Repository format 4"
1114
def initialize(self, url, shared=False, _internal=False):
1115
"""Format 4 branches cannot be created."""
1116
raise errors.UninitializableFormat(self)
1118
def is_supported(self):
1119
"""Format 4 is not supported.
1121
It is not supported because the model changed from 4 to 5 and the
1122
conversion logic is expensive - so doing it on the fly was not
1127
def _get_control_store(self, repo_transport, control_files):
1128
"""Format 4 repositories have no formal control store at this point.
1130
This will cause any control-file-needing apis to fail - this is desired.
1134
def _get_revision_store(self, repo_transport, control_files):
1135
"""See RepositoryFormat._get_revision_store()."""
1136
from bzrlib.xml4 import serializer_v4
1137
return self._get_text_rev_store(repo_transport,
1140
serializer=serializer_v4)
1142
def _get_text_store(self, transport, control_files):
1143
"""See RepositoryFormat._get_text_store()."""
1146
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1147
"""Bzr control format 5.
1149
This repository format has:
1150
- weaves for file texts and inventory
1152
- TextStores for revisions and signatures.
1156
super(RepositoryFormat5, self).__init__()
1157
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat5()
1159
def get_format_description(self):
1160
"""See RepositoryFormat.get_format_description()."""
1161
return "Weave repository format 5"
1163
def _get_revision_store(self, repo_transport, control_files):
1164
"""See RepositoryFormat._get_revision_store()."""
1165
"""Return the revision store object for this a_bzrdir."""
1166
return self._get_text_rev_store(repo_transport,
1171
def _get_text_store(self, transport, control_files):
1172
"""See RepositoryFormat._get_text_store()."""
1173
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1176
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1177
"""Bzr control format 6.
1179
This repository format has:
1180
- weaves for file texts and inventory
1181
- hash subdirectory based stores.
1182
- TextStores for revisions and signatures.
1186
super(RepositoryFormat6, self).__init__()
1187
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat6()
1189
def get_format_description(self):
1190
"""See RepositoryFormat.get_format_description()."""
1191
return "Weave repository format 6"
1193
def _get_revision_store(self, repo_transport, control_files):
1194
"""See RepositoryFormat._get_revision_store()."""
1195
return self._get_text_rev_store(repo_transport,
1201
def _get_text_store(self, transport, control_files):
1202
"""See RepositoryFormat._get_text_store()."""
1203
return self._get_versioned_file_store('weaves', transport, control_files)
1206
class MetaDirRepositoryFormat(RepositoryFormat):
1207
"""Common base class for the new repositories using the metadir layour."""
1210
super(MetaDirRepositoryFormat, self).__init__()
1211
self._matchingbzrdir = bzrlib.bzrdir.BzrDirMetaFormat1()
1213
def _create_control_files(self, a_bzrdir):
1214
"""Create the required files and the initial control_files object."""
1215
# FIXME: RBC 20060125 dont peek under the covers
1216
# NB: no need to escape relative paths that are url safe.
1217
repository_transport = a_bzrdir.get_repository_transport(self)
1218
control_files = LockableFiles(repository_transport, 'lock', LockDir)
1219
control_files.create_lock()
1220
return control_files
1222
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
1223
"""Upload the initial blank content."""
1224
control_files = self._create_control_files(a_bzrdir)
1225
control_files.lock_write()
1227
control_files._transport.mkdir_multi(dirs,
1228
mode=control_files._dir_mode)
1229
for file, content in files:
1230
control_files.put(file, content)
1231
for file, content in utf8_files:
1232
control_files.put_utf8(file, content)
1234
control_files.put_utf8('shared-storage', '')
1236
control_files.unlock()
1239
class RepositoryFormat7(MetaDirRepositoryFormat):
1240
"""Bzr repository 7.
1242
This repository format has:
1243
- weaves for file texts and inventory
1244
- hash subdirectory based stores.
1245
- TextStores for revisions and signatures.
1246
- a format marker of its own
1247
- an optional 'shared-storage' flag
1248
- an optional 'no-working-trees' flag
1251
def _get_control_store(self, repo_transport, control_files):
1252
"""Return the control store for this repository."""
1253
return self._get_versioned_file_store('',
1258
def get_format_string(self):
1259
"""See RepositoryFormat.get_format_string()."""
1260
return "Bazaar-NG Repository format 7"
1262
def get_format_description(self):
1263
"""See RepositoryFormat.get_format_description()."""
1264
return "Weave repository format 7"
1266
def _get_revision_store(self, repo_transport, control_files):
1267
"""See RepositoryFormat._get_revision_store()."""
1268
return self._get_text_rev_store(repo_transport,
1275
def _get_text_store(self, transport, control_files):
1276
"""See RepositoryFormat._get_text_store()."""
1277
return self._get_versioned_file_store('weaves',
1281
def initialize(self, a_bzrdir, shared=False):
1282
"""Create a weave repository.
1284
:param shared: If true the repository will be initialized as a shared
1287
from bzrlib.weavefile import write_weave_v5
1288
from bzrlib.weave import Weave
1290
# Create an empty weave
1292
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1293
empty_weave = sio.getvalue()
1295
mutter('creating repository in %s.', a_bzrdir.transport.base)
1296
dirs = ['revision-store', 'weaves']
1297
files = [('inventory.weave', StringIO(empty_weave)),
1299
utf8_files = [('format', self.get_format_string())]
1301
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1302
return self.open(a_bzrdir=a_bzrdir, _found=True)
1304
def open(self, a_bzrdir, _found=False, _override_transport=None):
1305
"""See RepositoryFormat.open().
1307
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1308
repository at a slightly different url
1309
than normal. I.e. during 'upgrade'.
1312
format = RepositoryFormat.find_format(a_bzrdir)
1313
assert format.__class__ == self.__class__
1314
if _override_transport is not None:
1315
repo_transport = _override_transport
1317
repo_transport = a_bzrdir.get_repository_transport(None)
1318
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1319
text_store = self._get_text_store(repo_transport, control_files)
1320
control_store = self._get_control_store(repo_transport, control_files)
1321
_revision_store = self._get_revision_store(repo_transport, control_files)
1322
return MetaDirRepository(_format=self,
1324
control_files=control_files,
1325
_revision_store=_revision_store,
1326
control_store=control_store,
1327
text_store=text_store)
1330
class RepositoryFormatKnit1(MetaDirRepositoryFormat):
1331
"""Bzr repository knit format 1.
1333
This repository format has:
1334
- knits for file texts and inventory
1335
- hash subdirectory based stores.
1336
- knits for revisions and signatures
1337
- TextStores for revisions and signatures.
1338
- a format marker of its own
1339
- an optional 'shared-storage' flag
1340
- an optional 'no-working-trees' flag
1343
This format was introduced in bzr 0.8.
1346
def _get_control_store(self, repo_transport, control_files):
1347
"""Return the control store for this repository."""
1348
return VersionedFileStore(
1351
file_mode=control_files._file_mode,
1352
versionedfile_class=KnitVersionedFile,
1353
versionedfile_kwargs={'factory':KnitPlainFactory()},
1356
def get_format_string(self):
1357
"""See RepositoryFormat.get_format_string()."""
1358
return "Bazaar-NG Knit Repository Format 1"
1360
def get_format_description(self):
1361
"""See RepositoryFormat.get_format_description()."""
1362
return "Knit repository format 1"
1364
def _get_revision_store(self, repo_transport, control_files):
1365
"""See RepositoryFormat._get_revision_store()."""
1366
from bzrlib.store.revision.knit import KnitRevisionStore
1367
versioned_file_store = VersionedFileStore(
1369
file_mode=control_files._file_mode,
1372
versionedfile_class=KnitVersionedFile,
1373
versionedfile_kwargs={'delta':False, 'factory':KnitPlainFactory()},
1376
return KnitRevisionStore(versioned_file_store)
1378
def _get_text_store(self, transport, control_files):
1379
"""See RepositoryFormat._get_text_store()."""
1380
return self._get_versioned_file_store('knits',
1383
versionedfile_class=KnitVersionedFile,
1386
def initialize(self, a_bzrdir, shared=False):
1387
"""Create a knit format 1 repository.
1389
:param a_bzrdir: bzrdir to contain the new repository; must already
1391
:param shared: If true the repository will be initialized as a shared
1394
mutter('creating repository in %s.', a_bzrdir.transport.base)
1395
dirs = ['revision-store', 'knits']
1397
utf8_files = [('format', self.get_format_string())]
1399
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1400
repo_transport = a_bzrdir.get_repository_transport(None)
1401
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1402
control_store = self._get_control_store(repo_transport, control_files)
1403
transaction = bzrlib.transactions.WriteTransaction()
1404
# trigger a write of the inventory store.
1405
control_store.get_weave_or_empty('inventory', transaction)
1406
_revision_store = self._get_revision_store(repo_transport, control_files)
1407
_revision_store.has_revision_id('A', transaction)
1408
_revision_store.get_signature_file(transaction)
1409
return self.open(a_bzrdir=a_bzrdir, _found=True)
1411
def open(self, a_bzrdir, _found=False, _override_transport=None):
1412
"""See RepositoryFormat.open().
1414
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1415
repository at a slightly different url
1416
than normal. I.e. during 'upgrade'.
1419
format = RepositoryFormat.find_format(a_bzrdir)
1420
assert format.__class__ == self.__class__
1421
if _override_transport is not None:
1422
repo_transport = _override_transport
1424
repo_transport = a_bzrdir.get_repository_transport(None)
1425
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1426
text_store = self._get_text_store(repo_transport, control_files)
1427
control_store = self._get_control_store(repo_transport, control_files)
1428
_revision_store = self._get_revision_store(repo_transport, control_files)
1429
return KnitRepository(_format=self,
1431
control_files=control_files,
1432
_revision_store=_revision_store,
1433
control_store=control_store,
1434
text_store=text_store)
1437
# formats which have no format string are not discoverable
1438
# and not independently creatable, so are not registered.
1439
RepositoryFormat.register_format(RepositoryFormat7())
1440
_default_format = RepositoryFormatKnit1()
1441
RepositoryFormat.register_format(_default_format)
1442
RepositoryFormat.set_default_format(_default_format)
1443
_legacy_formats = [RepositoryFormat4(),
1444
RepositoryFormat5(),
1445
RepositoryFormat6()]
1448
class InterRepository(InterObject):
1449
"""This class represents operations taking place between two repositories.
1451
Its instances have methods like copy_content and fetch, and contain
1452
references to the source and target repositories these operations can be
1455
Often we will provide convenience methods on 'repository' which carry out
1456
operations with another repository - they will always forward to
1457
InterRepository.get(other).method_name(parameters).
1461
"""The available optimised InterRepository types."""
1464
def copy_content(self, revision_id=None, basis=None):
1465
"""Make a complete copy of the content in self into destination.
1467
This is a destructive operation! Do not use it on existing
1470
:param revision_id: Only copy the content needed to construct
1471
revision_id and its parents.
1472
:param basis: Copy the needed data preferentially from basis.
1475
self.target.set_make_working_trees(self.source.make_working_trees())
1476
except NotImplementedError:
1478
# grab the basis available data
1479
if basis is not None:
1480
self.target.fetch(basis, revision_id=revision_id)
1481
# but dont bother fetching if we have the needed data now.
1482
if (revision_id not in (None, NULL_REVISION) and
1483
self.target.has_revision(revision_id)):
1485
self.target.fetch(self.source, revision_id=revision_id)
1487
def _double_lock(self, lock_source, lock_target):
1488
"""Take out too locks, rolling back the first if the second throws."""
1493
# we want to ensure that we don't leave source locked by mistake.
1494
# and any error on target should not confuse source.
1495
self.source.unlock()
1499
def fetch(self, revision_id=None, pb=None):
1500
"""Fetch the content required to construct revision_id.
1502
The content is copied from source to target.
1504
:param revision_id: if None all content is copied, if NULL_REVISION no
1506
:param pb: optional progress bar to use for progress reports. If not
1507
provided a default one will be created.
1509
Returns the copied revision count and the failed revisions in a tuple:
1512
from bzrlib.fetch import GenericRepoFetcher
1513
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1514
self.source, self.source._format, self.target, self.target._format)
1515
f = GenericRepoFetcher(to_repository=self.target,
1516
from_repository=self.source,
1517
last_revision=revision_id,
1519
return f.count_copied, f.failed_revisions
1521
def lock_read(self):
1522
"""Take out a logical read lock.
1524
This will lock the source branch and the target branch. The source gets
1525
a read lock and the target a read lock.
1527
self._double_lock(self.source.lock_read, self.target.lock_read)
1529
def lock_write(self):
1530
"""Take out a logical write lock.
1532
This will lock the source branch and the target branch. The source gets
1533
a read lock and the target a write lock.
1535
self._double_lock(self.source.lock_read, self.target.lock_write)
1538
def missing_revision_ids(self, revision_id=None):
1539
"""Return the revision ids that source has that target does not.
1541
These are returned in topological order.
1543
:param revision_id: only return revision ids included by this
1546
# generic, possibly worst case, slow code path.
1547
target_ids = set(self.target.all_revision_ids())
1548
if revision_id is not None:
1549
source_ids = self.source.get_ancestry(revision_id)
1550
assert source_ids[0] == None
1553
source_ids = self.source.all_revision_ids()
1554
result_set = set(source_ids).difference(target_ids)
1555
# this may look like a no-op: its not. It preserves the ordering
1556
# other_ids had while only returning the members from other_ids
1557
# that we've decided we need.
1558
return [rev_id for rev_id in source_ids if rev_id in result_set]
1561
"""Release the locks on source and target."""
1563
self.target.unlock()
1565
self.source.unlock()
1568
class InterWeaveRepo(InterRepository):
1569
"""Optimised code paths between Weave based repositories."""
1571
_matching_repo_format = RepositoryFormat7()
1572
"""Repository format for testing with."""
1575
def is_compatible(source, target):
1576
"""Be compatible with known Weave formats.
1578
We dont test for the stores being of specific types becase that
1579
could lead to confusing results, and there is no need to be
1583
return (isinstance(source._format, (RepositoryFormat5,
1585
RepositoryFormat7)) and
1586
isinstance(target._format, (RepositoryFormat5,
1588
RepositoryFormat7)))
1589
except AttributeError:
1593
def copy_content(self, revision_id=None, basis=None):
1594
"""See InterRepository.copy_content()."""
1595
# weave specific optimised path:
1596
if basis is not None:
1597
# copy the basis in, then fetch remaining data.
1598
basis.copy_content_into(self.target, revision_id)
1599
# the basis copy_content_into could misset this.
1601
self.target.set_make_working_trees(self.source.make_working_trees())
1602
except NotImplementedError:
1604
self.target.fetch(self.source, revision_id=revision_id)
1607
self.target.set_make_working_trees(self.source.make_working_trees())
1608
except NotImplementedError:
1610
# FIXME do not peek!
1611
if self.source.control_files._transport.listable():
1612
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1614
self.target.weave_store.copy_all_ids(
1615
self.source.weave_store,
1617
from_transaction=self.source.get_transaction(),
1618
to_transaction=self.target.get_transaction())
1619
pb.update('copying inventory', 0, 1)
1620
self.target.control_weaves.copy_multi(
1621
self.source.control_weaves, ['inventory'],
1622
from_transaction=self.source.get_transaction(),
1623
to_transaction=self.target.get_transaction())
1624
self.target._revision_store.text_store.copy_all_ids(
1625
self.source._revision_store.text_store,
1630
self.target.fetch(self.source, revision_id=revision_id)
1633
def fetch(self, revision_id=None, pb=None):
1634
"""See InterRepository.fetch()."""
1635
from bzrlib.fetch import GenericRepoFetcher
1636
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1637
self.source, self.source._format, self.target, self.target._format)
1638
f = GenericRepoFetcher(to_repository=self.target,
1639
from_repository=self.source,
1640
last_revision=revision_id,
1642
return f.count_copied, f.failed_revisions
1645
def missing_revision_ids(self, revision_id=None):
1646
"""See InterRepository.missing_revision_ids()."""
1647
# we want all revisions to satisfy revision_id in source.
1648
# but we dont want to stat every file here and there.
1649
# we want then, all revisions other needs to satisfy revision_id
1650
# checked, but not those that we have locally.
1651
# so the first thing is to get a subset of the revisions to
1652
# satisfy revision_id in source, and then eliminate those that
1653
# we do already have.
1654
# this is slow on high latency connection to self, but as as this
1655
# disk format scales terribly for push anyway due to rewriting
1656
# inventory.weave, this is considered acceptable.
1658
if revision_id is not None:
1659
source_ids = self.source.get_ancestry(revision_id)
1660
assert source_ids[0] == None
1663
source_ids = self.source._all_possible_ids()
1664
source_ids_set = set(source_ids)
1665
# source_ids is the worst possible case we may need to pull.
1666
# now we want to filter source_ids against what we actually
1667
# have in target, but dont try to check for existence where we know
1668
# we do not have a revision as that would be pointless.
1669
target_ids = set(self.target._all_possible_ids())
1670
possibly_present_revisions = target_ids.intersection(source_ids_set)
1671
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
1672
required_revisions = source_ids_set.difference(actually_present_revisions)
1673
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
1674
if revision_id is not None:
1675
# we used get_ancestry to determine source_ids then we are assured all
1676
# revisions referenced are present as they are installed in topological order.
1677
# and the tip revision was validated by get_ancestry.
1678
return required_topo_revisions
1680
# if we just grabbed the possibly available ids, then
1681
# we only have an estimate of whats available and need to validate
1682
# that against the revision records.
1683
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1686
class InterKnitRepo(InterRepository):
1687
"""Optimised code paths between Knit based repositories."""
1689
_matching_repo_format = RepositoryFormatKnit1()
1690
"""Repository format for testing with."""
1693
def is_compatible(source, target):
1694
"""Be compatible with known Knit formats.
1696
We dont test for the stores being of specific types becase that
1697
could lead to confusing results, and there is no need to be
1701
return (isinstance(source._format, (RepositoryFormatKnit1)) and
1702
isinstance(target._format, (RepositoryFormatKnit1)))
1703
except AttributeError:
1707
def fetch(self, revision_id=None, pb=None):
1708
"""See InterRepository.fetch()."""
1709
from bzrlib.fetch import KnitRepoFetcher
1710
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1711
self.source, self.source._format, self.target, self.target._format)
1712
f = KnitRepoFetcher(to_repository=self.target,
1713
from_repository=self.source,
1714
last_revision=revision_id,
1716
return f.count_copied, f.failed_revisions
1719
def missing_revision_ids(self, revision_id=None):
1720
"""See InterRepository.missing_revision_ids()."""
1721
if revision_id is not None:
1722
source_ids = self.source.get_ancestry(revision_id)
1723
assert source_ids[0] == None
1726
source_ids = self.source._all_possible_ids()
1727
source_ids_set = set(source_ids)
1728
# source_ids is the worst possible case we may need to pull.
1729
# now we want to filter source_ids against what we actually
1730
# have in target, but dont try to check for existence where we know
1731
# we do not have a revision as that would be pointless.
1732
target_ids = set(self.target._all_possible_ids())
1733
possibly_present_revisions = target_ids.intersection(source_ids_set)
1734
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
1735
required_revisions = source_ids_set.difference(actually_present_revisions)
1736
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
1737
if revision_id is not None:
1738
# we used get_ancestry to determine source_ids then we are assured all
1739
# revisions referenced are present as they are installed in topological order.
1740
# and the tip revision was validated by get_ancestry.
1741
return required_topo_revisions
1743
# if we just grabbed the possibly available ids, then
1744
# we only have an estimate of whats available and need to validate
1745
# that against the revision records.
1746
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1748
InterRepository.register_optimiser(InterWeaveRepo)
1749
InterRepository.register_optimiser(InterKnitRepo)
1752
class RepositoryTestProviderAdapter(object):
1753
"""A tool to generate a suite testing multiple repository formats at once.
1755
This is done by copying the test once for each transport and injecting
1756
the transport_server, transport_readonly_server, and bzrdir_format and
1757
repository_format classes into each copy. Each copy is also given a new id()
1758
to make it easy to identify.
1761
def __init__(self, transport_server, transport_readonly_server, formats):
1762
self._transport_server = transport_server
1763
self._transport_readonly_server = transport_readonly_server
1764
self._formats = formats
1766
def adapt(self, test):
1767
result = TestSuite()
1768
for repository_format, bzrdir_format in self._formats:
1769
new_test = deepcopy(test)
1770
new_test.transport_server = self._transport_server
1771
new_test.transport_readonly_server = self._transport_readonly_server
1772
new_test.bzrdir_format = bzrdir_format
1773
new_test.repository_format = repository_format
1774
def make_new_test_id():
1775
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
1776
return lambda: new_id
1777
new_test.id = make_new_test_id()
1778
result.addTest(new_test)
1782
class InterRepositoryTestProviderAdapter(object):
1783
"""A tool to generate a suite testing multiple inter repository formats.
1785
This is done by copying the test once for each interrepo provider and injecting
1786
the transport_server, transport_readonly_server, repository_format and
1787
repository_to_format classes into each copy.
1788
Each copy is also given a new id() to make it easy to identify.
1791
def __init__(self, transport_server, transport_readonly_server, formats):
1792
self._transport_server = transport_server
1793
self._transport_readonly_server = transport_readonly_server
1794
self._formats = formats
1796
def adapt(self, test):
1797
result = TestSuite()
1798
for interrepo_class, repository_format, repository_format_to in self._formats:
1799
new_test = deepcopy(test)
1800
new_test.transport_server = self._transport_server
1801
new_test.transport_readonly_server = self._transport_readonly_server
1802
new_test.interrepo_class = interrepo_class
1803
new_test.repository_format = repository_format
1804
new_test.repository_format_to = repository_format_to
1805
def make_new_test_id():
1806
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
1807
return lambda: new_id
1808
new_test.id = make_new_test_id()
1809
result.addTest(new_test)
1813
def default_test_list():
1814
"""Generate the default list of interrepo permutations to test."""
1816
# test the default InterRepository between format 6 and the current
1818
# XXX: robertc 20060220 reinstate this when there are two supported
1819
# formats which do not have an optimal code path between them.
1820
result.append((InterRepository,
1821
RepositoryFormat6(),
1822
RepositoryFormatKnit1()))
1823
for optimiser in InterRepository._optimisers:
1824
result.append((optimiser,
1825
optimiser._matching_repo_format,
1826
optimiser._matching_repo_format
1828
# if there are specific combinations we want to use, we can add them
1833
class CopyConverter(object):
1834
"""A repository conversion tool which just performs a copy of the content.
1836
This is slow but quite reliable.
1839
def __init__(self, target_format):
1840
"""Create a CopyConverter.
1842
:param target_format: The format the resulting repository should be.
1844
self.target_format = target_format
1846
def convert(self, repo, pb):
1847
"""Perform the conversion of to_convert, giving feedback via pb.
1849
:param to_convert: The disk object to convert.
1850
:param pb: a progress bar to use for progress information.
1855
# this is only useful with metadir layouts - separated repo content.
1856
# trigger an assertion if not such
1857
repo._format.get_format_string()
1858
self.repo_dir = repo.bzrdir
1859
self.step('Moving repository to repository.backup')
1860
self.repo_dir.transport.move('repository', 'repository.backup')
1861
backup_transport = self.repo_dir.transport.clone('repository.backup')
1862
self.source_repo = repo._format.open(self.repo_dir,
1864
_override_transport=backup_transport)
1865
self.step('Creating new repository')
1866
converted = self.target_format.initialize(self.repo_dir,
1867
self.source_repo.is_shared())
1868
converted.lock_write()
1870
self.step('Copying content into repository.')
1871
self.source_repo.copy_content_into(converted)
1874
self.step('Deleting old repository content.')
1875
self.repo_dir.transport.delete_tree('repository.backup')
1876
self.pb.note('repository converted')
1878
def step(self, message):
1879
"""Update the pb by a step."""
1881
self.pb.update(message, self.count, self.total)
1884
class CommitBuilder(object):
1885
"""Provides an interface to build up a commit.
1887
This allows describing a tree to be committed without needing to
1888
know the internals of the format of the repository.
1890
def __init__(self, repository, parents, config, timestamp=None,
1891
timezone=None, committer=None, revprops=None,
1893
"""Initiate a CommitBuilder.
1895
:param repository: Repository to commit to.
1896
:param parents: Revision ids of the parents of the new revision.
1897
:param config: Configuration to use.
1898
:param timestamp: Optional timestamp recorded for commit.
1899
:param timezone: Optional timezone for timestamp.
1900
:param committer: Optional committer to set for commit.
1901
:param revprops: Optional dictionary of revision properties.
1902
:param revision_id: Optional revision id.
1904
self._config = config
1906
if committer is None:
1907
self._committer = self._config.username()
1909
assert isinstance(committer, basestring), type(committer)
1910
self._committer = committer
1912
self.new_inventory = Inventory()
1913
self._new_revision_id = revision_id
1914
self.parents = parents
1915
self.repository = repository
1918
if revprops is not None:
1919
self._revprops.update(revprops)
1921
if timestamp is None:
1922
self._timestamp = time.time()
1924
self._timestamp = long(timestamp)
1926
if timezone is None:
1927
self._timezone = local_time_offset()
1929
self._timezone = int(timezone)
1931
self._generate_revision_if_needed()
1933
def commit(self, message):
1934
"""Make the actual commit.
1936
:return: The revision id of the recorded revision.
1938
rev = Revision(timestamp=self._timestamp,
1939
timezone=self._timezone,
1940
committer=self._committer,
1942
inventory_sha1=self.inv_sha1,
1943
revision_id=self._new_revision_id,
1944
properties=self._revprops)
1945
rev.parent_ids = self.parents
1946
self.repository.add_revision(self._new_revision_id, rev,
1947
self.new_inventory, self._config)
1948
return self._new_revision_id
1950
def finish_inventory(self):
1951
"""Tell the builder that the inventory is finished."""
1952
self.new_inventory.revision = self._new_revision_id
1953
self.inv_sha1 = self.repository.add_inventory(
1954
self._new_revision_id,
1959
def _gen_revision_id(self):
1960
"""Return new revision-id."""
1961
s = '%s-%s-' % (self._config.user_email(),
1962
compact_date(self._timestamp))
1963
s += hexlify(rand_bytes(8))
1966
def _generate_revision_if_needed(self):
1967
"""Create a revision id if None was supplied.
1969
If the repository can not support user-specified revision ids
1970
they should override this function and raise UnsupportedOperation
1971
if _new_revision_id is not None.
1973
:raises: UnsupportedOperation
1975
if self._new_revision_id is None:
1976
self._new_revision_id = self._gen_revision_id()
1978
def record_entry_contents(self, ie, parent_invs, path, tree):
1979
"""Record the content of ie from tree into the commit if needed.
1981
:param ie: An inventory entry present in the commit.
1982
:param parent_invs: The inventories of the parent revisions of the
1984
:param path: The path the entry is at in the tree.
1985
:param tree: The tree which contains this entry and should be used to
1988
self.new_inventory.add(ie)
1990
# ie.revision is always None if the InventoryEntry is considered
1991
# for committing. ie.snapshot will record the correct revision
1992
# which may be the sole parent if it is untouched.
1993
if ie.revision is not None:
1995
previous_entries = ie.find_previous_heads(
1997
self.repository.weave_store,
1998
self.repository.get_transaction())
1999
# we are creating a new revision for ie in the history store
2001
ie.snapshot(self._new_revision_id, path, previous_entries, tree, self)
2003
def modified_directory(self, file_id, file_parents):
2004
"""Record the presence of a symbolic link.
2006
:param file_id: The file_id of the link to record.
2007
:param file_parents: The per-file parent revision ids.
2009
self._add_text_to_weave(file_id, [], file_parents.keys())
2011
def modified_file_text(self, file_id, file_parents,
2012
get_content_byte_lines, text_sha1=None,
2014
"""Record the text of file file_id
2016
:param file_id: The file_id of the file to record the text of.
2017
:param file_parents: The per-file parent revision ids.
2018
:param get_content_byte_lines: A callable which will return the byte
2020
:param text_sha1: Optional SHA1 of the file contents.
2021
:param text_size: Optional size of the file contents.
2023
mutter('storing text of file {%s} in revision {%s} into %r',
2024
file_id, self._new_revision_id, self.repository.weave_store)
2025
# special case to avoid diffing on renames or
2027
if (len(file_parents) == 1
2028
and text_sha1 == file_parents.values()[0].text_sha1
2029
and text_size == file_parents.values()[0].text_size):
2030
previous_ie = file_parents.values()[0]
2031
versionedfile = self.repository.weave_store.get_weave(file_id,
2032
self.repository.get_transaction())
2033
versionedfile.clone_text(self._new_revision_id,
2034
previous_ie.revision, file_parents.keys())
2035
return text_sha1, text_size
2037
new_lines = get_content_byte_lines()
2038
# TODO: Rather than invoking sha_strings here, _add_text_to_weave
2039
# should return the SHA1 and size
2040
self._add_text_to_weave(file_id, new_lines, file_parents.keys())
2041
return bzrlib.osutils.sha_strings(new_lines), \
2042
sum(map(len, new_lines))
2044
def modified_link(self, file_id, file_parents, link_target):
2045
"""Record the presence of a symbolic link.
2047
:param file_id: The file_id of the link to record.
2048
:param file_parents: The per-file parent revision ids.
2049
:param link_target: Target location of this link.
2051
self._add_text_to_weave(file_id, [], file_parents.keys())
2053
def _add_text_to_weave(self, file_id, new_lines, parents):
2054
versionedfile = self.repository.weave_store.get_weave_or_empty(
2055
file_id, self.repository.get_transaction())
2056
versionedfile.add_lines(self._new_revision_id, parents, new_lines)
2057
versionedfile.clear_cache()
2060
# Copied from xml.sax.saxutils
2061
def _unescape_xml(data):
2062
"""Unescape &, <, and > in a string of data.
2064
data = data.replace("<", "<")
2065
data = data.replace(">", ">")
2066
# must do ampersand last
2067
return data.replace("&", "&")