# Copyright (C) 2005, 2006, 2007 Canonical Ltd # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA from bzrlib import ( bzrdir, errors, graph, knit, lockable_files, lockdir, osutils, transactions, xml5, xml7, ) from bzrlib.decorators import needs_read_lock, needs_write_lock from bzrlib.repository import ( MetaDirRepository, MetaDirRepositoryFormat, RepositoryFormat, RootCommitBuilder, ) import bzrlib.revision as _mod_revision from bzrlib.store.versioned import VersionedFileStore from bzrlib.trace import mutter, note, warning class KnitRepository(MetaDirRepository): """Knit format repository.""" _serializer = xml5.serializer_v5 def _warn_if_deprecated(self): # This class isn't deprecated pass def _inventory_add_lines(self, inv_vf, revid, parents, lines): inv_vf.add_lines_with_ghosts(revid, parents, lines) @needs_read_lock def _all_revision_ids(self): """See Repository.all_revision_ids().""" # Knits get the revision graph from the index of the revision knit, so # it's always possible even if they're on an unlistable transport. return self._revision_store.all_revision_ids(self.get_transaction()) def fileid_involved_between_revs(self, from_revid, to_revid): """Find file_id(s) which are involved in the changes between revisions. This determines the set of revisions which are involved, and then finds all file ids affected by those revisions. """ from_revid = osutils.safe_revision_id(from_revid) to_revid = osutils.safe_revision_id(to_revid) vf = self._get_revision_vf() from_set = set(vf.get_ancestry(from_revid)) to_set = set(vf.get_ancestry(to_revid)) changed = to_set.difference(from_set) return self._fileid_involved_by_set(changed) def fileid_involved(self, last_revid=None): """Find all file_ids modified in the ancestry of last_revid. :param last_revid: If None, last_revision() will be used. """ if not last_revid: changed = set(self.all_revision_ids()) else: changed = set(self.get_ancestry(last_revid)) if None in changed: changed.remove(None) return self._fileid_involved_by_set(changed) @needs_read_lock def get_ancestry(self, revision_id): """Return a list of revision-ids integrated by a revision. This is topologically sorted. """ if revision_id is None: return [None] revision_id = osutils.safe_revision_id(revision_id) vf = self._get_revision_vf() try: return [None] + vf.get_ancestry(revision_id) except errors.RevisionNotPresent: raise errors.NoSuchRevision(self, revision_id) @needs_read_lock def get_revision(self, revision_id): """Return the Revision object for a named revision""" revision_id = osutils.safe_revision_id(revision_id) return self.get_revision_reconcile(revision_id) @needs_read_lock def get_revision_graph(self, revision_id=None): """Return a dictionary containing the revision graph. :param revision_id: The revision_id to get a graph from. If None, then the entire revision graph is returned. This is a deprecated mode of operation and will be removed in the future. :return: a dictionary of revision_id->revision_parents_list. """ # special case NULL_REVISION if revision_id == _mod_revision.NULL_REVISION: return {} revision_id = osutils.safe_revision_id(revision_id) a_weave = self._get_revision_vf() entire_graph = a_weave.get_graph() if revision_id is None: return a_weave.get_graph() elif revision_id not in a_weave: raise errors.NoSuchRevision(self, revision_id) else: # add what can be reached from revision_id result = {} pending = set([revision_id]) while len(pending) > 0: node = pending.pop() result[node] = a_weave.get_parents(node) for revision_id in result[node]: if revision_id not in result: pending.add(revision_id) return result @needs_read_lock def get_revision_graph_with_ghosts(self, revision_ids=None): """Return a graph of the revisions with ghosts marked as applicable. :param revision_ids: an iterable of revisions to graph or None for all. :return: a Graph object with the graph reachable from revision_ids. """ result = graph.Graph() vf = self._get_revision_vf() versions = set(vf.versions()) if not revision_ids: pending = set(self.all_revision_ids()) required = set([]) else: pending = set(osutils.safe_revision_id(r) for r in revision_ids) # special case NULL_REVISION if _mod_revision.NULL_REVISION in pending: pending.remove(_mod_revision.NULL_REVISION) required = set(pending) done = set([]) while len(pending): revision_id = pending.pop() if not revision_id in versions: if revision_id in required: raise errors.NoSuchRevision(self, revision_id) # a ghost result.add_ghost(revision_id) # mark it as done so we don't try for it again. done.add(revision_id) continue parent_ids = vf.get_parents_with_ghosts(revision_id) for parent_id in parent_ids: # is this queued or done ? if (parent_id not in pending and parent_id not in done): # no, queue it. pending.add(parent_id) result.add_node(revision_id, parent_ids) done.add(revision_id) return result def _get_revision_vf(self): """:return: a versioned file containing the revisions.""" vf = self._revision_store.get_revision_file(self.get_transaction()) return vf def _get_history_vf(self): """Get a versionedfile whose history graph reflects all revisions. For knit repositories, this is the revision knit. """ return self._get_revision_vf() @needs_write_lock def reconcile(self, other=None, thorough=False): """Reconcile this repository.""" from bzrlib.reconcile import KnitReconciler reconciler = KnitReconciler(self, thorough=thorough) reconciler.reconcile() return reconciler def revision_parents(self, revision_id): revision_id = osutils.safe_revision_id(revision_id) return self._get_revision_vf().get_parents(revision_id) class KnitRepository3(KnitRepository): def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store): KnitRepository.__init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store) self._serializer = xml7.serializer_v7 def deserialise_inventory(self, revision_id, xml): """Transform the xml into an inventory object. :param revision_id: The expected revision id of the inventory. :param xml: A serialised inventory. """ result = self._serializer.read_inventory_from_string(xml) assert result.root.revision is not None return result def serialise_inventory(self, inv): """Transform the inventory object into XML text. :param revision_id: The expected revision id of the inventory. :param xml: A serialised inventory. """ assert inv.revision_id is not None assert inv.root.revision is not None return KnitRepository.serialise_inventory(self, inv) def get_commit_builder(self, branch, parents, config, timestamp=None, timezone=None, committer=None, revprops=None, revision_id=None): """Obtain a CommitBuilder for this repository. :param branch: Branch to commit to. :param parents: Revision ids of the parents of the new revision. :param config: Configuration to use. :param timestamp: Optional timestamp recorded for commit. :param timezone: Optional timezone for timestamp. :param committer: Optional committer to set for commit. :param revprops: Optional dictionary of revision properties. :param revision_id: Optional revision id. """ revision_id = osutils.safe_revision_id(revision_id) return RootCommitBuilder(self, parents, config, timestamp, timezone, committer, revprops, revision_id) class RepositoryFormatKnit(MetaDirRepositoryFormat): """Bzr repository knit format (generalized). This repository format has: - knits for file texts and inventory - hash subdirectory based stores. - knits for revisions and signatures - TextStores for revisions and signatures. - a format marker of its own - an optional 'shared-storage' flag - an optional 'no-working-trees' flag - a LockDir lock """ def _get_control_store(self, repo_transport, control_files): """Return the control store for this repository.""" return VersionedFileStore( repo_transport, prefixed=False, file_mode=control_files._file_mode, versionedfile_class=knit.KnitVersionedFile, versionedfile_kwargs={'factory':knit.KnitPlainFactory()}, ) def _get_revision_store(self, repo_transport, control_files): """See RepositoryFormat._get_revision_store().""" from bzrlib.store.revision.knit import KnitRevisionStore versioned_file_store = VersionedFileStore( repo_transport, file_mode=control_files._file_mode, prefixed=False, precious=True, versionedfile_class=knit.KnitVersionedFile, versionedfile_kwargs={'delta':False, 'factory':knit.KnitPlainFactory(), }, escaped=True, ) return KnitRevisionStore(versioned_file_store) def _get_text_store(self, transport, control_files): """See RepositoryFormat._get_text_store().""" return self._get_versioned_file_store('knits', transport, control_files, versionedfile_class=knit.KnitVersionedFile, versionedfile_kwargs={ 'create_parent_dir':True, 'delay_create':True, 'dir_mode':control_files._dir_mode, }, escaped=True) def initialize(self, a_bzrdir, shared=False): """Create a knit format 1 repository. :param a_bzrdir: bzrdir to contain the new repository; must already be initialized. :param shared: If true the repository will be initialized as a shared repository. """ mutter('creating repository in %s.', a_bzrdir.transport.base) dirs = ['revision-store', 'knits'] files = [] utf8_files = [('format', self.get_format_string())] self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared) repo_transport = a_bzrdir.get_repository_transport(None) control_files = lockable_files.LockableFiles(repo_transport, 'lock', lockdir.LockDir) control_store = self._get_control_store(repo_transport, control_files) transaction = transactions.WriteTransaction() # trigger a write of the inventory store. control_store.get_weave_or_empty('inventory', transaction) _revision_store = self._get_revision_store(repo_transport, control_files) # the revision id here is irrelevant: it will not be stored, and cannot # already exist. _revision_store.has_revision_id('A', transaction) _revision_store.get_signature_file(transaction) return self.open(a_bzrdir=a_bzrdir, _found=True) def open(self, a_bzrdir, _found=False, _override_transport=None): """See RepositoryFormat.open(). :param _override_transport: INTERNAL USE ONLY. Allows opening the repository at a slightly different url than normal. I.e. during 'upgrade'. """ if not _found: format = RepositoryFormat.find_format(a_bzrdir) assert format.__class__ == self.__class__ if _override_transport is not None: repo_transport = _override_transport else: repo_transport = a_bzrdir.get_repository_transport(None) control_files = lockable_files.LockableFiles(repo_transport, 'lock', lockdir.LockDir) text_store = self._get_text_store(repo_transport, control_files) control_store = self._get_control_store(repo_transport, control_files) _revision_store = self._get_revision_store(repo_transport, control_files) return KnitRepository(_format=self, a_bzrdir=a_bzrdir, control_files=control_files, _revision_store=_revision_store, control_store=control_store, text_store=text_store) class RepositoryFormatKnit1(RepositoryFormatKnit): """Bzr repository knit format 1. This repository format has: - knits for file texts and inventory - hash subdirectory based stores. - knits for revisions and signatures - TextStores for revisions and signatures. - a format marker of its own - an optional 'shared-storage' flag - an optional 'no-working-trees' flag - a LockDir lock This format was introduced in bzr 0.8. """ def __ne__(self, other): return self.__class__ is not other.__class__ def get_format_string(self): """See RepositoryFormat.get_format_string().""" return "Bazaar-NG Knit Repository Format 1" def get_format_description(self): """See RepositoryFormat.get_format_description().""" return "Knit repository format 1" def check_conversion_target(self, target_format): pass class RepositoryFormatKnit3(RepositoryFormatKnit): """Bzr repository knit format 2. This repository format has: - knits for file texts and inventory - hash subdirectory based stores. - knits for revisions and signatures - TextStores for revisions and signatures. - a format marker of its own - an optional 'shared-storage' flag - an optional 'no-working-trees' flag - a LockDir lock - support for recording full info about the tree root - support for recording tree-references """ repository_class = KnitRepository3 rich_root_data = True support_tree_reference = True def _get_matching_bzrdir(self): return bzrdir.format_registry.make_bzrdir('dirstate-with-subtree') def _ignore_setting_bzrdir(self, format): pass _matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir) def check_conversion_target(self, target_format): if not target_format.rich_root_data: raise errors.BadConversionTarget( 'Does not support rich root data.', target_format) if not getattr(target_format, 'support_tree_reference', False): raise errors.BadConversionTarget( 'Does not support nested trees', target_format) def get_format_string(self): """See RepositoryFormat.get_format_string().""" return "Bazaar Knit Repository Format 3 (bzr 0.15)\n" def get_format_description(self): """See RepositoryFormat.get_format_description().""" return "Knit repository format 3" def open(self, a_bzrdir, _found=False, _override_transport=None): """See RepositoryFormat.open(). :param _override_transport: INTERNAL USE ONLY. Allows opening the repository at a slightly different url than normal. I.e. during 'upgrade'. """ if not _found: format = RepositoryFormat.find_format(a_bzrdir) assert format.__class__ == self.__class__ if _override_transport is not None: repo_transport = _override_transport else: repo_transport = a_bzrdir.get_repository_transport(None) control_files = lockable_files.LockableFiles(repo_transport, 'lock', lockdir.LockDir) text_store = self._get_text_store(repo_transport, control_files) control_store = self._get_control_store(repo_transport, control_files) _revision_store = self._get_revision_store(repo_transport, control_files) return self.repository_class(_format=self, a_bzrdir=a_bzrdir, control_files=control_files, _revision_store=_revision_store, control_store=control_store, text_store=text_store)