83
66
def _reconcile(self):
84
67
"""Helper function for performing reconciliation."""
85
self._reconcile_branch()
86
self._reconcile_repository()
88
def _reconcile_branch(self):
90
self.branch = self.bzrdir.open_branch()
91
except errors.NotBranchError:
92
# Nothing to check here
93
self.fixed_branch_history = None
95
ui.ui_factory.note('Reconciling branch %s' % self.branch.base)
96
branch_reconciler = self.branch.reconcile(thorough=True)
97
self.fixed_branch_history = branch_reconciler.fixed_history
99
def _reconcile_repository(self):
100
68
self.repo = self.bzrdir.find_repository()
101
ui.ui_factory.note('Reconciling repository %s' %
103
self.pb.update("Reconciling repository", 0, 1)
104
if self.canonicalize_chks:
106
self.repo.reconcile_canonicalize_chks
107
except AttributeError:
108
raise errors.BzrError(
109
"%s cannot canonicalize CHKs." % (self.repo,))
110
repo_reconciler = self.repo.reconcile_canonicalize_chks()
112
repo_reconciler = self.repo.reconcile(thorough=True)
69
self.pb.note('Reconciling repository %s',
70
self.repo.bzrdir.root_transport.base)
71
repo_reconciler = self.repo.reconcile(thorough=True)
113
72
self.inconsistent_parents = repo_reconciler.inconsistent_parents
114
73
self.garbage_inventories = repo_reconciler.garbage_inventories
115
if repo_reconciler.aborted:
117
'Reconcile aborted: revision index has inconsistent parents.')
119
'Run "bzr check" for more details.')
121
ui.ui_factory.note('Reconciliation complete.')
124
class BranchReconciler(object):
125
"""Reconciler that works on a branch."""
127
def __init__(self, a_branch, thorough=False):
128
self.fixed_history = None
129
self.thorough = thorough
130
self.branch = a_branch
133
operation = cleanup.OperationWithCleanups(self._reconcile)
134
self.add_cleanup = operation.add_cleanup
135
operation.run_simple()
137
def _reconcile(self):
138
self.branch.lock_write()
139
self.add_cleanup(self.branch.unlock)
140
self.pb = ui.ui_factory.nested_progress_bar()
141
self.add_cleanup(self.pb.finished)
142
self._reconcile_steps()
144
def _reconcile_steps(self):
145
self._reconcile_revision_history()
147
def _reconcile_revision_history(self):
148
last_revno, last_revision_id = self.branch.last_revision_info()
150
graph = self.branch.repository.get_graph()
152
for revid in graph.iter_lefthand_ancestry(
153
last_revision_id, (_mod_revision.NULL_REVISION,)):
154
real_history.append(revid)
155
except errors.RevisionNotPresent:
156
pass # Hit a ghost left hand parent
157
real_history.reverse()
158
if last_revno != len(real_history):
159
self.fixed_history = True
160
# Technically for Branch5 formats, it is more efficient to use
161
# set_revision_history, as this will regenerate it again.
162
# Not really worth a whole BranchReconciler class just for this,
164
ui.ui_factory.note('Fixing last revision info %s => %s' % (
165
last_revno, len(real_history)))
166
self.branch.set_last_revision_info(len(real_history),
169
self.fixed_history = False
170
ui.ui_factory.note('revision_history ok.')
74
self.pb.note('Reconciliation complete.')
173
77
class RepoReconciler(object):
174
78
"""Reconciler that reconciles a repository.
176
The goal of repository reconciliation is to make any derived data
177
consistent with the core data committed by a user. This can involve
178
reindexing, or removing unreferenced data if that can interfere with
179
queries in a given repository.
181
80
Currently this consists of an inventory reweave with revision cross-checks.
244
141
# put a revision into the graph.
245
142
self._graph_revision(rev_id)
246
143
self._check_garbage_inventories()
247
# if there are no inconsistent_parents and
144
# if there are no inconsistent_parents and
248
145
# (no garbage inventories or we are not doing a thorough check)
249
if (not self.inconsistent_parents and
146
if (not self.inconsistent_parents and
250
147
(not self.garbage_inventories or not self.thorough)):
251
ui.ui_factory.note('Inventory ok.')
148
self.pb.note('Inventory ok.')
253
self.pb.update('Backing up inventory', 0, 0)
254
self.repo._backup_inventory()
255
ui.ui_factory.note('Backup inventory created.')
256
new_inventories = self.repo._temp_inventories()
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())
258
157
# we have topological order of revisions and non ghost parents ready.
259
158
self._setup_steps(len(self._rev_graph))
260
revision_keys = [(rev_id,) for rev_id in topo_sort(self._rev_graph)]
261
stream = self._change_inv_parents(
262
self.inventory.get_record_stream(revision_keys, 'unordered', True),
263
self._new_inv_parents,
265
new_inventories.insert_record_stream(stream)
266
# if this worked, the set of new_inventories.keys should equal
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, self.inventory.get_lines(rev_id),
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
268
if not (set(new_inventories.keys()) ==
269
set([(revid,) for revid in self.pending])):
270
raise AssertionError()
182
assert set(new_inventory_vf.versions()) == self.pending
271
183
self.pb.update('Writing weave')
272
self.repo._activate_new_inventory()
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())
273
186
self.inventory = None
274
ui.ui_factory.note('Inventory regenerated.')
276
def _new_inv_parents(self, revision_key):
277
"""Lookup ghost-filtered parents for revision_key."""
278
# Use the filtered ghostless parents list:
279
return tuple([(revid,) for revid in self._rev_graph[revision_key[-1]]])
281
def _change_inv_parents(self, stream, get_parents, all_revision_keys):
282
"""Adapt a record stream to reconcile the parents."""
283
for record in stream:
284
wanted_parents = get_parents(record.key)
285
if wanted_parents and wanted_parents[0] not in all_revision_keys:
286
# The check for the left most parent only handles knit
287
# compressors, but this code only applies to knit and weave
288
# repositories anyway.
289
bytes = record.get_bytes_as('fulltext')
290
yield FulltextContentFactory(record.key, wanted_parents, record.sha1, bytes)
292
adapted_record = AdapterFactory(record.key, wanted_parents, record)
294
self._reweave_step('adding inventories')
187
self.pb.note('Inventory regenerated.')
296
189
def _setup_steps(self, new_total):
297
190
"""Setup the markers we need to control the progress bar."""
347
267
class KnitReconciler(RepoReconciler):
348
268
"""Reconciler that reconciles a knit format repository.
350
This will detect garbage inventories and remove them in thorough mode.
270
This will detect garbage inventories and remove them.
272
Inconsistent parentage is checked for in the revision weave.
353
275
def _reconcile_steps(self):
354
276
"""Perform the steps to reconcile this repository."""
355
277
if self.thorough:
358
except errors.BzrCheckError:
361
279
# knits never suffer this
362
280
self._gc_inventory()
363
self._fix_text_parents()
365
282
def _load_indexes(self):
366
283
"""Load indexes for the reconciliation."""
367
284
self.transaction = self.repo.get_transaction()
368
self.pb.update('Reading indexes', 0, 2)
369
self.inventory = self.repo.inventories
370
self.pb.update('Reading indexes', 1, 2)
371
self.repo._check_for_inconsistent_revision_parents()
372
self.revisions = self.repo.revisions
373
self.pb.update('Reading indexes', 2, 2)
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)
375
291
def _gc_inventory(self):
376
292
"""Remove inventories that are not referenced from the revision store."""
377
self.pb.update('Checking unused inventories', 0, 1)
293
self.pb.update('Checking unused inventories.', 0, 1)
378
294
self._check_garbage_inventories()
379
self.pb.update('Checking unused inventories', 1, 3)
295
self.pb.update('Checking unused inventories.', 1, 3)
380
296
if not self.garbage_inventories:
381
ui.ui_factory.note('Inventory ok.')
297
self.pb.note('Inventory ok.')
383
self.pb.update('Backing up inventory', 0, 0)
384
self.repo._backup_inventory()
385
ui.ui_factory.note('Backup Inventory created')
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
302
# asking for '' should never return a non-empty weave
387
new_inventories = self.repo._temp_inventories()
303
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
388
306
# we have topological order of revisions and non ghost parents ready.
389
graph = self.revisions.get_parent_map(self.revisions.keys())
390
revision_keys = topo_sort(graph)
391
revision_ids = [key[-1] for key in revision_keys]
392
self._setup_steps(len(revision_keys))
393
stream = self._change_inv_parents(
394
self.inventory.get_record_stream(revision_keys, 'unordered', True),
397
new_inventories.insert_record_stream(stream)
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))
398
319
# if this worked, the set of new_inventory_vf.names should equal
399
# the revisionds list
400
if not(set(new_inventories.keys()) == set(revision_keys)):
401
raise AssertionError()
321
assert set(new_inventory_vf.versions()) == set(self.revisions.versions())
402
322
self.pb.update('Writing weave')
403
self.repo._activate_new_inventory()
323
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.transaction)
324
self.repo.control_weaves.delete('inventory.new', self.transaction)
404
325
self.inventory = None
405
ui.ui_factory.note('Inventory regenerated.')
407
def _fix_text_parents(self):
408
"""Fix bad versionedfile parent entries.
410
It is possible for the parents entry in a versionedfile entry to be
411
inconsistent with the values in the revision and inventory.
413
This method finds entries with such inconsistencies, corrects their
414
parent lists, and replaces the versionedfile with a corrected version.
416
transaction = self.repo.get_transaction()
417
versions = [key[-1] for key in self.revisions.keys()]
418
mutter('Prepopulating revision text cache with %d revisions',
420
vf_checker = self.repo._get_versioned_file_checker()
421
bad_parents, unused_versions = vf_checker.check_file_version_parents(
422
self.repo.texts, self.pb)
423
text_index = vf_checker.text_index
424
per_id_bad_parents = {}
425
for key in unused_versions:
426
# Ensure that every file with unused versions gets rewritten.
427
# NB: This is really not needed, reconcile != pack.
428
per_id_bad_parents[key[0]] = {}
429
# Generate per-knit/weave data.
430
for key, details in bad_parents.iteritems():
433
knit_parents = tuple([parent[-1] for parent in details[0]])
434
correct_parents = tuple([parent[-1] for parent in details[1]])
435
file_details = per_id_bad_parents.setdefault(file_id, {})
436
file_details[rev_id] = (knit_parents, correct_parents)
437
file_id_versions = {}
438
for text_key in text_index:
439
versions_list = file_id_versions.setdefault(text_key[0], [])
440
versions_list.append(text_key[1])
441
# Do the reconcile of individual weaves.
442
for num, file_id in enumerate(per_id_bad_parents):
443
self.pb.update('Fixing text parents', num,
444
len(per_id_bad_parents))
445
versions_with_bad_parents = per_id_bad_parents[file_id]
446
id_unused_versions = set(key[-1] for key in unused_versions
447
if key[0] == file_id)
448
if file_id in file_id_versions:
449
file_versions = file_id_versions[file_id]
451
# This id was present in the disk store but is not referenced
452
# by any revision at all.
454
self._fix_text_parent(file_id, versions_with_bad_parents,
455
id_unused_versions, file_versions)
457
def _fix_text_parent(self, file_id, versions_with_bad_parents,
458
unused_versions, all_versions):
459
"""Fix bad versionedfile entries in a single versioned file."""
460
mutter('fixing text parent: %r (%d versions)', file_id,
461
len(versions_with_bad_parents))
462
mutter('(%d are unused)', len(unused_versions))
463
new_file_id = 'temp:%s' % file_id
466
for version in all_versions:
467
if version in unused_versions:
469
elif version in versions_with_bad_parents:
470
parents = versions_with_bad_parents[version][1]
472
pmap = self.repo.texts.get_parent_map([(file_id, version)])
473
parents = [key[-1] for key in pmap[(file_id, version)]]
474
new_parents[(new_file_id, version)] = [
475
(new_file_id, parent) for parent in parents]
476
needed_keys.add((file_id, version))
477
def fix_parents(stream):
478
for record in stream:
479
bytes = record.get_bytes_as('fulltext')
480
new_key = (new_file_id, record.key[-1])
481
parents = new_parents[new_key]
482
yield FulltextContentFactory(new_key, parents, record.sha1, bytes)
483
stream = self.repo.texts.get_record_stream(needed_keys, 'topological', True)
484
self.repo._remove_file_id(new_file_id)
485
self.repo.texts.insert_record_stream(fix_parents(stream))
486
self.repo._remove_file_id(file_id)
488
self.repo._move_file_id(new_file_id, file_id)
491
class PackReconciler(RepoReconciler):
492
"""Reconciler that reconciles a pack based repository.
494
Garbage inventories do not affect ancestry queries, and removal is
495
considerably more expensive as there is no separate versioned file for
496
them, so they are not cleaned. In short it is currently a no-op.
498
In future this may be a good place to hook in annotation cache checking,
499
index recreation etc.
502
# XXX: The index corruption that _fix_text_parents performs is needed for
503
# packs, but not yet implemented. The basic approach is to:
504
# - lock the names list
505
# - perform a customised pack() that regenerates data as needed
506
# - unlock the names list
507
# https://bugs.launchpad.net/bzr/+bug/154173
509
def __init__(self, repo, other=None, thorough=False,
510
canonicalize_chks=False):
511
super(PackReconciler, self).__init__(repo, other=other,
513
self.canonicalize_chks = canonicalize_chks
515
def _reconcile_steps(self):
516
"""Perform the steps to reconcile this repository."""
517
if not self.thorough:
519
collection = self.repo._pack_collection
520
collection.ensure_loaded()
521
collection.lock_names()
522
self.add_cleanup(collection._unlock_names)
523
packs = collection.all_packs()
524
all_revisions = self.repo.all_revision_ids()
525
total_inventories = len(list(
526
collection.inventory_index.combined_index.iter_all_entries()))
527
if len(all_revisions):
528
if self.canonicalize_chks:
529
reconcile_meth = self.repo._canonicalize_chks_pack
531
reconcile_meth = self.repo._reconcile_pack
532
new_pack = reconcile_meth(collection, packs, ".reconcile",
533
all_revisions, self.pb)
534
if new_pack is not None:
535
self._discard_and_save(packs)
537
# only make a new pack when there is data to copy.
538
self._discard_and_save(packs)
539
self.garbage_inventories = total_inventories - len(list(
540
collection.inventory_index.combined_index.iter_all_entries()))
542
def _discard_and_save(self, packs):
543
"""Discard some packs from the repository.
545
This removes them from the memory index, saves the in-memory index
546
which makes the newly reconciled pack visible and hides the packs to be
547
discarded, and finally renames the packs being discarded into the
548
obsolete packs directory.
550
:param packs: The packs to discard.
553
self.repo._pack_collection._remove_pack_from_memory(pack)
554
self.repo._pack_collection._save_pack_names()
555
self.repo._pack_collection._obsolete_packs(packs)
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)