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 = RepoReconciler(self.repo)
72
repo_reconciler.reconcile()
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)
73
115
self.inconsistent_parents = repo_reconciler.inconsistent_parents
74
116
self.garbage_inventories = repo_reconciler.garbage_inventories
75
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.'))
78
176
class RepoReconciler(object):
79
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.
81
184
Currently this consists of an inventory reweave with revision cross-checks.
84
def __init__(self, repo):
187
def __init__(self, repo, other=None, thorough=False):
188
"""Construct a RepoReconciler.
190
:param thorough: perform a thorough check which may take longer but
191
will correct non-data loss issues such as incorrect
194
self.garbage_inventories = 0
195
self.inconsistent_parents = 0
198
self.thorough = thorough
87
200
def reconcile(self):
88
201
"""Perform reconciliation.
90
203
After reconciliation the following attributes document found issues:
91
inconsistent_parents: The number of revisions in the repository whose
92
ancestry was being reported incorrectly.
93
garbage_inventories: The number of inventory objects without revisions
94
that were garbage collected.
205
* `inconsistent_parents`: The number of revisions in the repository
206
whose ancestry was being reported incorrectly.
207
* `garbage_inventories`: The number of inventory objects without
208
revisions that were garbage collected.
210
operation = cleanup.OperationWithCleanups(self._reconcile)
211
self.add_cleanup = operation.add_cleanup
212
operation.run_simple()
214
def _reconcile(self):
96
215
self.repo.lock_write()
98
self.pb = ui.ui_factory.nested_progress_bar()
100
self._reconcile_steps()
216
self.add_cleanup(self.repo.unlock)
217
self.pb = ui.ui_factory.nested_progress_bar()
218
self.add_cleanup(self.pb.finished)
219
self._reconcile_steps()
106
221
def _reconcile_steps(self):
107
222
"""Perform the steps to reconcile this repository."""
108
223
self._reweave_inventory()
110
225
def _reweave_inventory(self):
111
"""Regenerate the inventory weave for the repository from scratch."""
112
# local because its really a wart we want to hide
113
from bzrlib.weave import WeaveFile, Weave
226
"""Regenerate the inventory weave for the repository from scratch.
228
This is a smart function: it will only do the reweave if doing it
229
will correct data issues. The self.thorough flag controls whether
230
only data-loss causing issues (!self.thorough) or all issues
231
(self.thorough) are treated as requiring the reweave.
114
233
transaction = self.repo.get_transaction()
115
self.pb.update('Reading inventory data.')
116
self.inventory = self.repo.get_inventory_weave()
234
self.pb.update(gettext('Reading inventory data'))
235
self.inventory = self.repo.inventories
236
self.revisions = self.repo.revisions
117
237
# the total set of revisions to process
118
self.pending = set([rev_id for rev_id in self.repo._revision_store.all_revision_ids(transaction)])
238
self.pending = set([key[-1] for key in self.revisions.keys()])
120
240
# mapping from revision_id to parents
121
241
self._rev_graph = {}
127
247
# put a revision into the graph.
128
248
self._graph_revision(rev_id)
129
249
self._check_garbage_inventories()
130
if not self.inconsistent_parents and not self.garbage_inventories:
131
self.pb.note('Inventory ok.')
250
# if there are no inconsistent_parents and
251
# (no garbage inventories or we are not doing a thorough check)
252
if (not self.inconsistent_parents and
253
(not self.garbage_inventories or not self.thorough)):
254
ui.ui_factory.note(gettext('Inventory ok.'))
133
self.pb.update('Backing up inventory...', 0, 0)
134
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.repo.get_transaction())
135
self.pb.note('Backup Inventory created.')
136
# asking for '' should never return a non-empty weave
137
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
138
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()
140
261
# we have topological order of revisions and non ghost parents ready.
141
262
self._setup_steps(len(self._rev_graph))
142
for rev_id in TopoSorter(self._rev_graph.items()).iter_topo_order():
143
parents = self._rev_graph[rev_id]
144
# double check this really is in topological order.
145
unavailable = [p for p in parents if p not in new_inventory_vf]
146
assert len(unavailable) == 0
147
# this entry has all the non ghost parents in the inventory
149
self._reweave_step('adding inventories')
150
if isinstance(new_inventory_vf, WeaveFile):
151
# It's really a WeaveFile, but we call straight into the
152
# Weave's add method to disable the auto-write-out behaviour.
153
# This is done to avoid a revision_count * time-to-write additional overhead on
155
new_inventory_vf._check_write_ok()
156
Weave._add_lines(new_inventory_vf, rev_id, parents, self.inventory.get_lines(rev_id),
159
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
161
if isinstance(new_inventory_vf, WeaveFile):
162
new_inventory_vf._save()
163
# 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
165
assert set(new_inventory_vf.versions()) == self.pending
166
self.pb.update('Writing weave')
167
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.repo.get_transaction())
168
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()
169
276
self.inventory = None
170
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')
172
299
def _setup_steps(self, new_total):
173
300
"""Setup the markers we need to control the progress bar."""
230
350
class KnitReconciler(RepoReconciler):
231
351
"""Reconciler that reconciles a knit format repository.
233
This will detect garbage inventories and remove them.
235
Inconsistent parentage is checked for in the revision weave.
353
This will detect garbage inventories and remove them in thorough mode.
238
356
def _reconcile_steps(self):
239
357
"""Perform the steps to reconcile this repository."""
241
# knits never suffer this
242
self.inconsistent_parents = 0
361
except errors.BzrCheckError:
364
# knits never suffer this
366
self._fix_text_parents()
245
368
def _load_indexes(self):
246
369
"""Load indexes for the reconciliation."""
247
370
self.transaction = self.repo.get_transaction()
248
self.pb.update('Reading indexes.', 0, 2)
249
self.inventory = self.repo.get_inventory_weave()
250
self.pb.update('Reading indexes.', 1, 2)
251
self.revisions = self.repo._revision_store.get_revision_file(self.transaction)
252
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)
254
378
def _gc_inventory(self):
255
379
"""Remove inventories that are not referenced from the revision store."""
256
self.pb.update('Checking unused inventories.', 0, 1)
380
self.pb.update(gettext('Checking unused inventories'), 0, 1)
257
381
self._check_garbage_inventories()
258
self.pb.update('Checking unused inventories.', 1, 3)
382
self.pb.update(gettext('Checking unused inventories'), 1, 3)
259
383
if not self.garbage_inventories:
260
self.pb.note('Inventory ok.')
384
ui.ui_factory.note(gettext('Inventory ok.'))
262
self.pb.update('Backing up inventory...', 0, 0)
263
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.transaction)
264
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'))
265
389
# asking for '' should never return a non-empty weave
266
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
390
new_inventories = self.repo._temp_inventories()
269
391
# we have topological order of revisions and non ghost parents ready.
270
self._setup_steps(len(self.revisions))
271
for rev_id in TopoSorter(self.revisions.get_graph().items()).iter_topo_order():
272
parents = self.revisions.get_parents(rev_id)
273
# double check this really is in topological order.
274
unavailable = [p for p in parents if p not in new_inventory_vf]
275
assert len(unavailable) == 0
276
# this entry has all the non ghost parents in the inventory
278
self._reweave_step('adding inventories')
279
# ugly but needed, weaves are just way tooooo slow else.
280
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)
282
401
# if this worked, the set of new_inventory_vf.names should equal
284
assert set(new_inventory_vf.versions()) == set(self.revisions.versions())
285
self.pb.update('Writing weave')
286
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.transaction)
287
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()
288
407
self.inventory = None
289
self.pb.note('Inventory regenerated.')
291
def _reinsert_revisions(self):
292
"""Correct the revision history for revisions in the revision knit."""
293
# the total set of revisions to process
294
self.pending = set(self.revisions.versions())
296
# mapping from revision_id to parents
298
# errors that we detect
299
self.inconsistent_parents = 0
300
# we need the revision id of each revision and its available parents list
301
self._setup_steps(len(self.pending))
302
for rev_id in self.pending:
303
# put a revision into the graph.
304
self._graph_revision(rev_id)
306
if not self.inconsistent_parents:
307
self.pb.note('Revision history accurate.')
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:
309
self._setup_steps(len(self._rev_graph))
310
for rev_id, parents in self._rev_graph.items():
311
if parents != self.revisions.get_parents(rev_id):
312
self.revisions.fix_parents(rev_id, parents)
313
self._reweave_step('Fixing parents')
314
self.pb.note('Ancestry corrected.')
316
def _graph_revision(self, rev_id):
317
"""Load a revision into the revision graph."""
318
# pick a random revision
319
# analyse revision id rev_id and put it in the stack.
320
self._reweave_step('loading revisions')
321
rev = self.repo._revision_store.get_revision(rev_id, self.transaction)
322
assert rev.revision_id == rev_id
324
for parent in rev.parent_ids:
325
if self.revisions.has_version(parent):
326
parents.append(parent)
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
328
mutter('found ghost %s', parent)
329
self._rev_graph[rev_id] = parents
330
if set(self.inventory.get_parents(rev_id)) != set(parents):
331
self.inconsistent_parents += 1
332
mutter('Inconsistent inventory parents: id {%s} '
333
'inventory claims %r, '
334
'available parents are %r, '
335
'unavailable parents are %r',
337
set(self.inventory.get_parents(rev_id)),
339
set(rev.parent_ids).difference(set(parents)))
341
def _check_garbage_inventories(self):
342
"""Check for garbage inventories which we cannot trust
344
We cant trust them because their pre-requisite file data may not
345
be present - all we know is that their revision was not installed.
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.
347
inventories = set(self.inventory.versions())
348
revisions = set(self.revisions.versions())
349
garbage = inventories.difference(revisions)
350
self.garbage_inventories = len(garbage)
351
for revision_id in garbage:
352
mutter('Garbage inventory {%s} found.', revision_id)
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)