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# Copyright (C) 2005, 2006 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
# TODO: Check ancestries are correct for every revision: includes
# every committed so far, and in a reasonable order.
# TODO: Also check non-mainline revisions mentioned as parents.
# TODO: Check for extra files in the control directory.
# TODO: Check revision, inventory and entry objects have all
# required fields.
# TODO: Get every revision in the revision-store even if they're not
# referenced by history and make sure they're all valid.
# TODO: Perhaps have a way to record errors other than by raising exceptions;
# would perhaps be enough to accumulate exception objects in a list without
# raising them. If there's more than one exception it'd be good to see them
# all.
from bzrlib import errors
from bzrlib import repository as _mod_repository
from bzrlib import revision
from bzrlib.errors import BzrCheckError
import bzrlib.ui
from bzrlib.trace import log_error, note
class Check(object):
"""Check a repository"""
# The Check object interacts with InventoryEntry.check, etc.
def __init__(self, repository):
self.repository = repository
self.checked_text_cnt = 0
self.checked_rev_cnt = 0
self.ghosts = []
self.repeated_text_cnt = 0
self.missing_parent_links = {}
self.missing_inventory_sha_cnt = 0
self.missing_revision_cnt = 0
# maps (file-id, version) -> sha1; used by InventoryFile._check
self.checked_texts = {}
self.checked_weaves = {}
self.revision_versions = _mod_repository._RevisionTextVersionCache(
self.repository)
self.unreferenced_ancestors = set()
self.inconsistent_parents = []
self.dangling_versions = set()
def check(self):
self.repository.lock_read()
self.progress = bzrlib.ui.ui_factory.nested_progress_bar()
try:
self.progress.update('retrieving inventory', 0, 2)
# do not put in init, as it should be done with progess,
# and inside the lock.
self.inventory_weave = self.repository.get_inventory_weave()
self.progress.update('checking revision graph', 1)
self.check_revision_graph()
self.plan_revisions()
revno = 0
while revno < len(self.planned_revisions):
rev_id = self.planned_revisions[revno]
self.progress.update('checking revision', revno,
len(self.planned_revisions))
revno += 1
self.check_one_rev(rev_id)
# check_weaves is done after the revision scan so that
# revision_versions is pre-populated
self.check_weaves()
finally:
self.progress.finished()
self.repository.unlock()
def check_revision_graph(self):
if not self.repository.revision_graph_can_have_wrong_parents():
# This check is not necessary.
self.revs_with_bad_parents_in_index = None
return
bad_revisions = self.repository._find_inconsistent_revision_parents()
self.revs_with_bad_parents_in_index = list(bad_revisions)
def plan_revisions(self):
repository = self.repository
self.planned_revisions = repository.all_revision_ids()
self.progress.clear()
inventoried = set(self.inventory_weave.versions())
awol = set(self.planned_revisions) - inventoried
if len(awol) > 0:
raise BzrCheckError('Stored revisions missing from inventory'
'{%s}' % ','.join([f for f in awol]))
def report_results(self, verbose):
note('checked repository %s format %s',
self.repository.bzrdir.root_transport,
self.repository._format)
note('%6d revisions', self.checked_rev_cnt)
note('%6d file-ids', len(self.checked_weaves))
note('%6d unique file texts', self.checked_text_cnt)
note('%6d repeated file texts', self.repeated_text_cnt)
note('%6d unreferenced text ancestors',
len(self.unreferenced_ancestors))
if self.missing_inventory_sha_cnt:
note('%6d revisions are missing inventory_sha1',
self.missing_inventory_sha_cnt)
if self.missing_revision_cnt:
note('%6d revisions are mentioned but not present',
self.missing_revision_cnt)
if len(self.ghosts):
note('%6d ghost revisions', len(self.ghosts))
if verbose:
for ghost in self.ghosts:
note(' %s', ghost)
if len(self.missing_parent_links):
note('%6d revisions missing parents in ancestry',
len(self.missing_parent_links))
if verbose:
for link, linkers in self.missing_parent_links.items():
note(' %s should be in the ancestry for:', link)
for linker in linkers:
note(' * %s', linker)
if verbose:
for file_id, revision_id in self.unreferenced_ancestors:
log_error('unreferenced ancestor: {%s} in %s', revision_id,
file_id)
if len(self.inconsistent_parents):
note('%6d inconsistent parents', len(self.inconsistent_parents))
if verbose:
for info in self.inconsistent_parents:
revision_id, file_id, found_parents, correct_parents = info
note(' * %s version %s has parents %r '
'but should have %r'
% (file_id, revision_id, found_parents,
correct_parents))
if self.revs_with_bad_parents_in_index:
note('%6d revisions have incorrect parents in the revision index',
len(self.revs_with_bad_parents_in_index))
if verbose:
for item in self.revs_with_bad_parents_in_index:
revision_id, index_parents, actual_parents = item
note(
' %s has wrong parents in index: '
'%r should be %r',
revision_id, index_parents, actual_parents)
if self.dangling_versions:
note('%6d file versions are not referenced by their inventory',
len(self.dangling_versions))
def check_one_rev(self, rev_id):
"""Check one revision.
rev_id - the one to check
"""
rev = self.repository.get_revision(rev_id)
if rev.revision_id != rev_id:
raise BzrCheckError('wrong internal revision id in revision {%s}'
% rev_id)
for parent in rev.parent_ids:
if not parent in self.planned_revisions:
missing_links = self.missing_parent_links.get(parent, [])
missing_links.append(rev_id)
self.missing_parent_links[parent] = missing_links
# list based so somewhat slow,
# TODO have a planned_revisions list and set.
if self.repository.has_revision(parent):
missing_ancestry = self.repository.get_ancestry(parent)
for missing in missing_ancestry:
if (missing is not None
and missing not in self.planned_revisions):
self.planned_revisions.append(missing)
else:
self.ghosts.append(rev_id)
if rev.inventory_sha1:
inv_sha1 = self.repository.get_inventory_sha1(rev_id)
if inv_sha1 != rev.inventory_sha1:
raise BzrCheckError('Inventory sha1 hash doesn\'t match'
' value in revision {%s}' % rev_id)
self._check_revision_tree(rev_id)
self.checked_rev_cnt += 1
def check_weaves(self):
"""Check all the weaves we can get our hands on.
"""
n_weaves = 1
weave_ids = []
if self.repository.weave_store.listable():
weave_ids = list(self.repository.weave_store)
n_weaves = len(weave_ids) + 1
self.progress.update('checking versionedfile', 0, n_weaves)
self.inventory_weave.check(progress_bar=self.progress)
files_in_revisions = {}
revisions_of_files = {}
for i, weave_id in enumerate(weave_ids):
self.progress.update('checking versionedfile', i, n_weaves)
w = self.repository.weave_store.get_weave(weave_id,
self.repository.get_transaction())
# No progress here, because it looks ugly.
w.check()
weave_checker = self.repository.get_versioned_file_checker(
self.planned_revisions, self.revision_versions)
result = weave_checker.check_file_version_parents(w, weave_id)
bad_parents, dangling_versions = result
bad_parents = bad_parents.items()
for revision_id, (weave_parents,correct_parents) in bad_parents:
self.inconsistent_parents.append(
(revision_id, weave_id, weave_parents, correct_parents))
if weave_parents is None:
weave_parents = []
unreferenced_parents = set(weave_parents)-set(correct_parents)
for unreferenced_parent in unreferenced_parents:
self.unreferenced_ancestors.add(
(weave_id, unreferenced_parent))
self.dangling_versions.update(dangling_versions)
self.checked_weaves[weave_id] = True
def _check_revision_tree(self, rev_id):
tree = self.repository.revision_tree(rev_id)
self.revision_versions.add_revision_text_versions(tree)
inv = tree.inventory
seen_ids = {}
for file_id in inv:
if file_id in seen_ids:
raise BzrCheckError('duplicated file_id {%s} '
'in inventory for revision {%s}'
% (file_id, rev_id))
seen_ids[file_id] = True
for file_id in inv:
ie = inv[file_id]
ie.check(self, rev_id, inv, tree)
seen_names = {}
for path, ie in inv.iter_entries():
if path in seen_names:
raise BzrCheckError('duplicated path %s '
'in inventory for revision {%s}'
% (path, rev_id))
seen_names[path] = True
def check(branch, verbose):
"""Run consistency checks on a branch.
Results are reported through logging.
:raise BzrCheckError: if there's a consistency error.
"""
branch.lock_read()
try:
branch_result = branch.check()
repo_result = branch.repository.check([branch.last_revision()])
finally:
branch.unlock()
branch_result.report_results(verbose)
repo_result.report_results(verbose)
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