66
85
def _reconcile(self):
67
86
"""Helper function for performing reconciliation."""
87
self._reconcile_branch()
88
self._reconcile_repository()
90
def _reconcile_branch(self):
92
self.branch = self.bzrdir.open_branch()
93
except errors.NotBranchError:
94
# Nothing to check here
95
self.fixed_branch_history = None
97
ui.ui_factory.note(gettext('Reconciling branch %s') % self.branch.base)
98
branch_reconciler = self.branch.reconcile(thorough=True)
99
self.fixed_branch_history = branch_reconciler.fixed_history
101
def _reconcile_repository(self):
68
102
self.repo = self.bzrdir.find_repository()
69
self.pb.note('Reconciling repository %s',
70
self.repo.bzrdir.root_transport.base)
71
repo_reconciler = self.repo.reconcile(thorough=True)
103
ui.ui_factory.note(gettext('Reconciling repository %s') %
105
self.pb.update(gettext("Reconciling repository"), 0, 1)
106
if self.canonicalize_chks:
108
self.repo.reconcile_canonicalize_chks
109
except AttributeError:
110
raise errors.BzrError(
111
gettext("%s cannot canonicalize CHKs.") % (self.repo,))
112
repo_reconciler = self.repo.reconcile_canonicalize_chks()
114
repo_reconciler = self.repo.reconcile(thorough=True)
72
115
self.inconsistent_parents = repo_reconciler.inconsistent_parents
73
116
self.garbage_inventories = repo_reconciler.garbage_inventories
74
self.pb.note('Reconciliation complete.')
117
if repo_reconciler.aborted:
118
ui.ui_factory.note(gettext(
119
'Reconcile aborted: revision index has inconsistent parents.'))
120
ui.ui_factory.note(gettext(
121
'Run "bzr check" for more details.'))
123
ui.ui_factory.note(gettext('Reconciliation complete.'))
126
class BranchReconciler(object):
127
"""Reconciler that works on a branch."""
129
def __init__(self, a_branch, thorough=False):
130
self.fixed_history = None
131
self.thorough = thorough
132
self.branch = a_branch
135
operation = cleanup.OperationWithCleanups(self._reconcile)
136
self.add_cleanup = operation.add_cleanup
137
operation.run_simple()
139
def _reconcile(self):
140
self.branch.lock_write()
141
self.add_cleanup(self.branch.unlock)
142
self.pb = ui.ui_factory.nested_progress_bar()
143
self.add_cleanup(self.pb.finished)
144
self._reconcile_steps()
146
def _reconcile_steps(self):
147
self._reconcile_revision_history()
149
def _reconcile_revision_history(self):
150
last_revno, last_revision_id = self.branch.last_revision_info()
152
graph = self.branch.repository.get_graph()
154
for revid in graph.iter_lefthand_ancestry(
155
last_revision_id, (_mod_revision.NULL_REVISION,)):
156
real_history.append(revid)
157
except errors.RevisionNotPresent:
158
pass # Hit a ghost left hand parent
159
real_history.reverse()
160
if last_revno != len(real_history):
161
self.fixed_history = True
162
# Technically for Branch5 formats, it is more efficient to use
163
# set_revision_history, as this will regenerate it again.
164
# Not really worth a whole BranchReconciler class just for this,
166
ui.ui_factory.note(gettext('Fixing last revision info {0} '\
168
last_revno, len(real_history)))
169
self.branch.set_last_revision_info(len(real_history),
172
self.fixed_history = False
173
ui.ui_factory.note(gettext('revision_history ok.'))
77
176
class RepoReconciler(object):
78
177
"""Reconciler that reconciles a repository.
179
The goal of repository reconciliation is to make any derived data
180
consistent with the core data committed by a user. This can involve
181
reindexing, or removing unreferenced data if that can interfere with
182
queries in a given repository.
80
184
Currently this consists of an inventory reweave with revision cross-checks.
141
247
# put a revision into the graph.
142
248
self._graph_revision(rev_id)
143
249
self._check_garbage_inventories()
144
# if there are no inconsistent_parents and
250
# if there are no inconsistent_parents and
145
251
# (no garbage inventories or we are not doing a thorough check)
146
if (not self.inconsistent_parents and
252
if (not self.inconsistent_parents and
147
253
(not self.garbage_inventories or not self.thorough)):
148
self.pb.note('Inventory ok.')
254
ui.ui_factory.note(gettext('Inventory ok.'))
150
self.pb.update('Backing up inventory...', 0, 0)
151
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.repo.get_transaction())
152
self.pb.note('Backup Inventory created.')
153
# asking for '' should never return a non-empty weave
154
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
155
self.repo.get_transaction())
256
self.pb.update(gettext('Backing up inventory'), 0, 0)
257
self.repo._backup_inventory()
258
ui.ui_factory.note(gettext('Backup inventory created.'))
259
new_inventories = self.repo._temp_inventories()
157
261
# we have topological order of revisions and non ghost parents ready.
158
262
self._setup_steps(len(self._rev_graph))
159
for rev_id in TopoSorter(self._rev_graph.items()).iter_topo_order():
160
parents = self._rev_graph[rev_id]
161
# double check this really is in topological order.
162
unavailable = [p for p in parents if p not in new_inventory_vf]
163
assert len(unavailable) == 0
164
# this entry has all the non ghost parents in the inventory
166
self._reweave_step('adding inventories')
167
if isinstance(new_inventory_vf, WeaveFile):
168
# It's really a WeaveFile, but we call straight into the
169
# Weave's add method to disable the auto-write-out behaviour.
170
# This is done to avoid a revision_count * time-to-write additional overhead on
172
new_inventory_vf._check_write_ok()
173
Weave._add_lines(new_inventory_vf, rev_id, parents,
174
self.inventory.get_lines(rev_id), None, None, None)
176
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
178
if isinstance(new_inventory_vf, WeaveFile):
179
new_inventory_vf._save()
180
# if this worked, the set of new_inventory_vf.names should equal
263
revision_keys = [(rev_id,) for rev_id in topo_sort(self._rev_graph)]
264
stream = self._change_inv_parents(
265
self.inventory.get_record_stream(revision_keys, 'unordered', True),
266
self._new_inv_parents,
268
new_inventories.insert_record_stream(stream)
269
# if this worked, the set of new_inventories.keys should equal
182
assert set(new_inventory_vf.versions()) == self.pending
183
self.pb.update('Writing weave')
184
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.repo.get_transaction())
185
self.repo.control_weaves.delete('inventory.new', self.repo.get_transaction())
271
if not (set(new_inventories.keys()) ==
272
set([(revid,) for revid in self.pending])):
273
raise AssertionError()
274
self.pb.update(gettext('Writing weave'))
275
self.repo._activate_new_inventory()
186
276
self.inventory = None
187
self.pb.note('Inventory regenerated.')
277
ui.ui_factory.note(gettext('Inventory regenerated.'))
279
def _new_inv_parents(self, revision_key):
280
"""Lookup ghost-filtered parents for revision_key."""
281
# Use the filtered ghostless parents list:
282
return tuple([(revid,) for revid in self._rev_graph[revision_key[-1]]])
284
def _change_inv_parents(self, stream, get_parents, all_revision_keys):
285
"""Adapt a record stream to reconcile the parents."""
286
for record in stream:
287
wanted_parents = get_parents(record.key)
288
if wanted_parents and wanted_parents[0] not in all_revision_keys:
289
# The check for the left most parent only handles knit
290
# compressors, but this code only applies to knit and weave
291
# repositories anyway.
292
bytes = record.get_bytes_as('fulltext')
293
yield FulltextContentFactory(record.key, wanted_parents, record.sha1, bytes)
295
adapted_record = AdapterFactory(record.key, wanted_parents, record)
297
self._reweave_step('adding inventories')
189
299
def _setup_steps(self, new_total):
190
300
"""Setup the markers we need to control the progress bar."""
267
350
class KnitReconciler(RepoReconciler):
268
351
"""Reconciler that reconciles a knit format repository.
270
This will detect garbage inventories and remove them.
272
Inconsistent parentage is checked for in the revision weave.
353
This will detect garbage inventories and remove them in thorough mode.
275
356
def _reconcile_steps(self):
276
357
"""Perform the steps to reconcile this repository."""
277
358
if self.thorough:
361
except errors.BzrCheckError:
279
364
# knits never suffer this
280
365
self._gc_inventory()
366
self._fix_text_parents()
282
368
def _load_indexes(self):
283
369
"""Load indexes for the reconciliation."""
284
370
self.transaction = self.repo.get_transaction()
285
self.pb.update('Reading indexes.', 0, 2)
286
self.inventory = self.repo.get_inventory_weave()
287
self.pb.update('Reading indexes.', 1, 2)
288
self.revisions = self.repo._revision_store.get_revision_file(self.transaction)
289
self.pb.update('Reading indexes.', 2, 2)
371
self.pb.update(gettext('Reading indexes'), 0, 2)
372
self.inventory = self.repo.inventories
373
self.pb.update(gettext('Reading indexes'), 1, 2)
374
self.repo._check_for_inconsistent_revision_parents()
375
self.revisions = self.repo.revisions
376
self.pb.update(gettext('Reading indexes'), 2, 2)
291
378
def _gc_inventory(self):
292
379
"""Remove inventories that are not referenced from the revision store."""
293
self.pb.update('Checking unused inventories.', 0, 1)
380
self.pb.update(gettext('Checking unused inventories'), 0, 1)
294
381
self._check_garbage_inventories()
295
self.pb.update('Checking unused inventories.', 1, 3)
382
self.pb.update(gettext('Checking unused inventories'), 1, 3)
296
383
if not self.garbage_inventories:
297
self.pb.note('Inventory ok.')
384
ui.ui_factory.note(gettext('Inventory ok.'))
299
self.pb.update('Backing up inventory...', 0, 0)
300
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.transaction)
301
self.pb.note('Backup Inventory created.')
386
self.pb.update(gettext('Backing up inventory'), 0, 0)
387
self.repo._backup_inventory()
388
ui.ui_factory.note(gettext('Backup Inventory created'))
302
389
# asking for '' should never return a non-empty weave
303
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
390
new_inventories = self.repo._temp_inventories()
306
391
# we have topological order of revisions and non ghost parents ready.
307
self._setup_steps(len(self.revisions))
308
for rev_id in TopoSorter(self.revisions.get_graph().items()).iter_topo_order():
309
parents = self.revisions.get_parents(rev_id)
310
# double check this really is in topological order.
311
unavailable = [p for p in parents if p not in new_inventory_vf]
312
assert len(unavailable) == 0
313
# this entry has all the non ghost parents in the inventory
315
self._reweave_step('adding inventories')
316
# ugly but needed, weaves are just way tooooo slow else.
317
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
392
graph = self.revisions.get_parent_map(self.revisions.keys())
393
revision_keys = topo_sort(graph)
394
revision_ids = [key[-1] for key in revision_keys]
395
self._setup_steps(len(revision_keys))
396
stream = self._change_inv_parents(
397
self.inventory.get_record_stream(revision_keys, 'unordered', True),
400
new_inventories.insert_record_stream(stream)
319
401
# if this worked, the set of new_inventory_vf.names should equal
321
assert set(new_inventory_vf.versions()) == set(self.revisions.versions())
322
self.pb.update('Writing weave')
323
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.transaction)
324
self.repo.control_weaves.delete('inventory.new', self.transaction)
402
# the revisionds list
403
if not(set(new_inventories.keys()) == set(revision_keys)):
404
raise AssertionError()
405
self.pb.update(gettext('Writing weave'))
406
self.repo._activate_new_inventory()
325
407
self.inventory = None
326
self.pb.note('Inventory regenerated.')
328
def _check_garbage_inventories(self):
329
"""Check for garbage inventories which we cannot trust
331
We cant trust them because their pre-requisite file data may not
332
be present - all we know is that their revision was not installed.
334
inventories = set(self.inventory.versions())
335
revisions = set(self.revisions.versions())
336
garbage = inventories.difference(revisions)
337
self.garbage_inventories = len(garbage)
338
for revision_id in garbage:
339
mutter('Garbage inventory {%s} found.', revision_id)
408
ui.ui_factory.note(gettext('Inventory regenerated.'))
410
def _fix_text_parents(self):
411
"""Fix bad versionedfile parent entries.
413
It is possible for the parents entry in a versionedfile entry to be
414
inconsistent with the values in the revision and inventory.
416
This method finds entries with such inconsistencies, corrects their
417
parent lists, and replaces the versionedfile with a corrected version.
419
transaction = self.repo.get_transaction()
420
versions = [key[-1] for key in self.revisions.keys()]
421
mutter('Prepopulating revision text cache with %d revisions',
423
vf_checker = self.repo._get_versioned_file_checker()
424
bad_parents, unused_versions = vf_checker.check_file_version_parents(
425
self.repo.texts, self.pb)
426
text_index = vf_checker.text_index
427
per_id_bad_parents = {}
428
for key in unused_versions:
429
# Ensure that every file with unused versions gets rewritten.
430
# NB: This is really not needed, reconcile != pack.
431
per_id_bad_parents[key[0]] = {}
432
# Generate per-knit/weave data.
433
for key, details in bad_parents.iteritems():
436
knit_parents = tuple([parent[-1] for parent in details[0]])
437
correct_parents = tuple([parent[-1] for parent in details[1]])
438
file_details = per_id_bad_parents.setdefault(file_id, {})
439
file_details[rev_id] = (knit_parents, correct_parents)
440
file_id_versions = {}
441
for text_key in text_index:
442
versions_list = file_id_versions.setdefault(text_key[0], [])
443
versions_list.append(text_key[1])
444
# Do the reconcile of individual weaves.
445
for num, file_id in enumerate(per_id_bad_parents):
446
self.pb.update(gettext('Fixing text parents'), num,
447
len(per_id_bad_parents))
448
versions_with_bad_parents = per_id_bad_parents[file_id]
449
id_unused_versions = set(key[-1] for key in unused_versions
450
if key[0] == file_id)
451
if file_id in file_id_versions:
452
file_versions = file_id_versions[file_id]
454
# This id was present in the disk store but is not referenced
455
# by any revision at all.
457
self._fix_text_parent(file_id, versions_with_bad_parents,
458
id_unused_versions, file_versions)
460
def _fix_text_parent(self, file_id, versions_with_bad_parents,
461
unused_versions, all_versions):
462
"""Fix bad versionedfile entries in a single versioned file."""
463
mutter('fixing text parent: %r (%d versions)', file_id,
464
len(versions_with_bad_parents))
465
mutter('(%d are unused)', len(unused_versions))
466
new_file_id = 'temp:%s' % file_id
469
for version in all_versions:
470
if version in unused_versions:
472
elif version in versions_with_bad_parents:
473
parents = versions_with_bad_parents[version][1]
475
pmap = self.repo.texts.get_parent_map([(file_id, version)])
476
parents = [key[-1] for key in pmap[(file_id, version)]]
477
new_parents[(new_file_id, version)] = [
478
(new_file_id, parent) for parent in parents]
479
needed_keys.add((file_id, version))
480
def fix_parents(stream):
481
for record in stream:
482
bytes = record.get_bytes_as('fulltext')
483
new_key = (new_file_id, record.key[-1])
484
parents = new_parents[new_key]
485
yield FulltextContentFactory(new_key, parents, record.sha1, bytes)
486
stream = self.repo.texts.get_record_stream(needed_keys, 'topological', True)
487
self.repo._remove_file_id(new_file_id)
488
self.repo.texts.insert_record_stream(fix_parents(stream))
489
self.repo._remove_file_id(file_id)
491
self.repo._move_file_id(new_file_id, file_id)
494
class PackReconciler(RepoReconciler):
495
"""Reconciler that reconciles a pack based repository.
497
Garbage inventories do not affect ancestry queries, and removal is
498
considerably more expensive as there is no separate versioned file for
499
them, so they are not cleaned. In short it is currently a no-op.
501
In future this may be a good place to hook in annotation cache checking,
502
index recreation etc.
505
# XXX: The index corruption that _fix_text_parents performs is needed for
506
# packs, but not yet implemented. The basic approach is to:
507
# - lock the names list
508
# - perform a customised pack() that regenerates data as needed
509
# - unlock the names list
510
# https://bugs.launchpad.net/bzr/+bug/154173
512
def __init__(self, repo, other=None, thorough=False,
513
canonicalize_chks=False):
514
super(PackReconciler, self).__init__(repo, other=other,
516
self.canonicalize_chks = canonicalize_chks
518
def _reconcile_steps(self):
519
"""Perform the steps to reconcile this repository."""
520
if not self.thorough:
522
collection = self.repo._pack_collection
523
collection.ensure_loaded()
524
collection.lock_names()
525
self.add_cleanup(collection._unlock_names)
526
packs = collection.all_packs()
527
all_revisions = self.repo.all_revision_ids()
528
total_inventories = len(list(
529
collection.inventory_index.combined_index.iter_all_entries()))
530
if len(all_revisions):
531
if self.canonicalize_chks:
532
reconcile_meth = self.repo._canonicalize_chks_pack
534
reconcile_meth = self.repo._reconcile_pack
535
new_pack = reconcile_meth(collection, packs, ".reconcile",
536
all_revisions, self.pb)
537
if new_pack is not None:
538
self._discard_and_save(packs)
540
# only make a new pack when there is data to copy.
541
self._discard_and_save(packs)
542
self.garbage_inventories = total_inventories - len(list(
543
collection.inventory_index.combined_index.iter_all_entries()))
545
def _discard_and_save(self, packs):
546
"""Discard some packs from the repository.
548
This removes them from the memory index, saves the in-memory index
549
which makes the newly reconciled pack visible and hides the packs to be
550
discarded, and finally renames the packs being discarded into the
551
obsolete packs directory.
553
:param packs: The packs to discard.
556
self.repo._pack_collection._remove_pack_from_memory(pack)
557
self.repo._pack_collection._save_pack_names()
558
self.repo._pack_collection._obsolete_packs(packs)