80
76
def _reconcile(self):
81
77
"""Helper function for performing reconciliation."""
82
self._reconcile_branch()
83
self._reconcile_repository()
85
def _reconcile_branch(self):
87
self.branch = self.bzrdir.open_branch()
88
except errors.NotBranchError:
89
# Nothing to check here
90
self.fixed_branch_history = None
92
ui.ui_factory.note('Reconciling branch %s' % self.branch.base)
93
branch_reconciler = self.branch.reconcile(thorough=True)
94
self.fixed_branch_history = branch_reconciler.fixed_history
96
def _reconcile_repository(self):
97
78
self.repo = self.bzrdir.find_repository()
98
ui.ui_factory.note('Reconciling repository %s' %
100
self.pb.update("Reconciling repository", 0, 1)
79
self.pb.note('Reconciling repository %s',
80
self.repo.bzrdir.root_transport.base)
101
81
repo_reconciler = self.repo.reconcile(thorough=True)
102
82
self.inconsistent_parents = repo_reconciler.inconsistent_parents
103
83
self.garbage_inventories = repo_reconciler.garbage_inventories
104
84
if repo_reconciler.aborted:
106
86
'Reconcile aborted: revision index has inconsistent parents.')
108
88
'Run "bzr check" for more details.')
110
ui.ui_factory.note('Reconciliation complete.')
113
class BranchReconciler(object):
114
"""Reconciler that works on a branch."""
116
def __init__(self, a_branch, thorough=False):
117
self.fixed_history = None
118
self.thorough = thorough
119
self.branch = a_branch
122
operation = cleanup.OperationWithCleanups(self._reconcile)
123
self.add_cleanup = operation.add_cleanup
124
operation.run_simple()
126
def _reconcile(self):
127
self.branch.lock_write()
128
self.add_cleanup(self.branch.unlock)
129
self.pb = ui.ui_factory.nested_progress_bar()
130
self.add_cleanup(self.pb.finished)
131
self._reconcile_steps()
133
def _reconcile_steps(self):
134
self._reconcile_revision_history()
136
def _reconcile_revision_history(self):
137
repo = self.branch.repository
138
last_revno, last_revision_id = self.branch.last_revision_info()
141
for revid in repo.iter_reverse_revision_history(
143
real_history.append(revid)
144
except errors.RevisionNotPresent:
145
pass # Hit a ghost left hand parent
146
real_history.reverse()
147
if last_revno != len(real_history):
148
self.fixed_history = True
149
# Technically for Branch5 formats, it is more efficient to use
150
# set_revision_history, as this will regenerate it again.
151
# Not really worth a whole BranchReconciler class just for this,
153
ui.ui_factory.note('Fixing last revision info %s => %s' % (
154
last_revno, len(real_history)))
155
self.branch.set_last_revision_info(len(real_history),
158
self.fixed_history = False
159
ui.ui_factory.note('revision_history ok.')
90
self.pb.note('Reconciliation complete.')
162
93
class RepoReconciler(object):
163
94
"""Reconciler that reconciles a repository.
165
96
The goal of repository reconciliation is to make any derived data
166
consistent with the core data committed by a user. This can involve
97
consistent with the core data committed by a user. This can involve
167
98
reindexing, or removing unreferenced data if that can interfere with
168
99
queries in a given repository.
234
163
# put a revision into the graph.
235
164
self._graph_revision(rev_id)
236
165
self._check_garbage_inventories()
237
# if there are no inconsistent_parents and
166
# if there are no inconsistent_parents and
238
167
# (no garbage inventories or we are not doing a thorough check)
239
if (not self.inconsistent_parents and
168
if (not self.inconsistent_parents and
240
169
(not self.garbage_inventories or not self.thorough)):
241
ui.ui_factory.note('Inventory ok.')
170
self.pb.note('Inventory ok.')
243
self.pb.update('Backing up inventory', 0, 0)
244
self.repo._backup_inventory()
245
ui.ui_factory.note('Backup inventory created.')
246
new_inventories = self.repo._temp_inventories()
172
self.pb.update('Backing up inventory...', 0, 0)
173
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.repo.get_transaction())
174
self.pb.note('Backup Inventory created.')
175
# asking for '' should never return a non-empty weave
176
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
177
self.repo.get_transaction())
248
179
# we have topological order of revisions and non ghost parents ready.
249
180
self._setup_steps(len(self._rev_graph))
250
revision_keys = [(rev_id,) for rev_id in topo_sort(self._rev_graph)]
251
stream = self._change_inv_parents(
252
self.inventory.get_record_stream(revision_keys, 'unordered', True),
253
self._new_inv_parents,
255
new_inventories.insert_record_stream(stream)
256
# if this worked, the set of new_inventories.keys should equal
181
for rev_id in TopoSorter(self._rev_graph.items()).iter_topo_order():
182
parents = self._rev_graph[rev_id]
183
# double check this really is in topological order.
184
unavailable = [p for p in parents if p not in new_inventory_vf]
185
assert len(unavailable) == 0
186
# this entry has all the non ghost parents in the inventory
188
self._reweave_step('adding inventories')
189
if isinstance(new_inventory_vf, WeaveFile):
190
# It's really a WeaveFile, but we call straight into the
191
# Weave's add method to disable the auto-write-out behaviour.
192
# This is done to avoid a revision_count * time-to-write additional overhead on
194
new_inventory_vf._check_write_ok()
195
Weave._add_lines(new_inventory_vf, rev_id, parents,
196
self.inventory.get_lines(rev_id), None, None, None, False, True)
198
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
200
if isinstance(new_inventory_vf, WeaveFile):
201
new_inventory_vf._save()
202
# if this worked, the set of new_inventory_vf.names should equal
258
if not (set(new_inventories.keys()) ==
259
set([(revid,) for revid in self.pending])):
260
raise AssertionError()
204
assert set(new_inventory_vf.versions()) == self.pending
261
205
self.pb.update('Writing weave')
262
self.repo._activate_new_inventory()
206
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.repo.get_transaction())
207
self.repo.control_weaves.delete('inventory.new', self.repo.get_transaction())
263
208
self.inventory = None
264
ui.ui_factory.note('Inventory regenerated.')
266
def _new_inv_parents(self, revision_key):
267
"""Lookup ghost-filtered parents for revision_key."""
268
# Use the filtered ghostless parents list:
269
return tuple([(revid,) for revid in self._rev_graph[revision_key[-1]]])
271
def _change_inv_parents(self, stream, get_parents, all_revision_keys):
272
"""Adapt a record stream to reconcile the parents."""
273
for record in stream:
274
wanted_parents = get_parents(record.key)
275
if wanted_parents and wanted_parents[0] not in all_revision_keys:
276
# The check for the left most parent only handles knit
277
# compressors, but this code only applies to knit and weave
278
# repositories anyway.
279
bytes = record.get_bytes_as('fulltext')
280
yield FulltextContentFactory(record.key, wanted_parents, record.sha1, bytes)
282
adapted_record = AdapterFactory(record.key, wanted_parents, record)
284
self._reweave_step('adding inventories')
209
self.pb.note('Inventory regenerated.')
286
211
def _setup_steps(self, new_total):
287
212
"""Setup the markers we need to control the progress bar."""
294
219
# analyse revision id rev_id and put it in the stack.
295
220
self._reweave_step('loading revisions')
296
221
rev = self.repo.get_revision_reconcile(rev_id)
222
assert rev.revision_id == rev_id
298
224
for parent in rev.parent_ids:
299
225
if self._parent_is_available(parent):
300
226
parents.append(parent)
302
228
mutter('found ghost %s', parent)
303
self._rev_graph[rev_id] = parents
229
self._rev_graph[rev_id] = parents
230
if self._parents_are_inconsistent(rev_id, parents):
231
self.inconsistent_parents += 1
232
mutter('Inconsistent inventory parents: id {%s} '
233
'inventory claims %r, '
234
'available parents are %r, '
235
'unavailable parents are %r',
237
set(self.inventory.get_parents(rev_id)),
239
set(rev.parent_ids).difference(set(parents)))
241
def _parents_are_inconsistent(self, rev_id, parents):
242
"""Return True if the parents list of rev_id does not match the weave.
244
This detects inconsistencies based on the self.thorough value:
245
if thorough is on, the first parent value is checked as well as ghost
247
Otherwise only the ghost differences are evaluated.
249
weave_parents = self.inventory.get_parents(rev_id)
250
weave_missing_old_ghosts = set(weave_parents) != set(parents)
251
first_parent_is_wrong = (
252
len(weave_parents) and len(parents) and
253
parents[0] != weave_parents[0])
255
return weave_missing_old_ghosts or first_parent_is_wrong
257
return weave_missing_old_ghosts
305
259
def _check_garbage_inventories(self):
306
260
"""Check for garbage inventories which we cannot trust
355
307
def _load_indexes(self):
356
308
"""Load indexes for the reconciliation."""
357
309
self.transaction = self.repo.get_transaction()
358
self.pb.update('Reading indexes', 0, 2)
359
self.inventory = self.repo.inventories
360
self.pb.update('Reading indexes', 1, 2)
310
self.pb.update('Reading indexes.', 0, 2)
311
self.inventory = self.repo.get_inventory_weave()
312
self.pb.update('Reading indexes.', 1, 2)
361
313
self.repo._check_for_inconsistent_revision_parents()
362
self.revisions = self.repo.revisions
363
self.pb.update('Reading indexes', 2, 2)
314
self.revisions = self.repo._revision_store.get_revision_file(self.transaction)
315
self.pb.update('Reading indexes.', 2, 2)
365
317
def _gc_inventory(self):
366
318
"""Remove inventories that are not referenced from the revision store."""
367
self.pb.update('Checking unused inventories', 0, 1)
319
self.pb.update('Checking unused inventories.', 0, 1)
368
320
self._check_garbage_inventories()
369
self.pb.update('Checking unused inventories', 1, 3)
321
self.pb.update('Checking unused inventories.', 1, 3)
370
322
if not self.garbage_inventories:
371
ui.ui_factory.note('Inventory ok.')
323
self.pb.note('Inventory ok.')
373
self.pb.update('Backing up inventory', 0, 0)
374
self.repo._backup_inventory()
375
ui.ui_factory.note('Backup Inventory created')
325
self.pb.update('Backing up inventory...', 0, 0)
326
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.transaction)
327
self.pb.note('Backup Inventory created.')
376
328
# asking for '' should never return a non-empty weave
377
new_inventories = self.repo._temp_inventories()
329
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
378
332
# we have topological order of revisions and non ghost parents ready.
379
graph = self.revisions.get_parent_map(self.revisions.keys())
380
revision_keys = topo_sort(graph)
381
revision_ids = [key[-1] for key in revision_keys]
382
self._setup_steps(len(revision_keys))
383
stream = self._change_inv_parents(
384
self.inventory.get_record_stream(revision_keys, 'unordered', True),
387
new_inventories.insert_record_stream(stream)
333
self._setup_steps(len(self.revisions))
334
for rev_id in TopoSorter(self.revisions.get_graph().items()).iter_topo_order():
335
parents = self.revisions.get_parents(rev_id)
336
# double check this really is in topological order.
337
unavailable = [p for p in parents if p not in new_inventory_vf]
338
assert len(unavailable) == 0
339
# this entry has all the non ghost parents in the inventory
341
self._reweave_step('adding inventories')
342
# ugly but needed, weaves are just way tooooo slow else.
343
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
388
345
# if this worked, the set of new_inventory_vf.names should equal
389
# the revisionds list
390
if not(set(new_inventories.keys()) == set(revision_keys)):
391
raise AssertionError()
347
assert set(new_inventory_vf.versions()) == set(self.revisions.versions())
392
348
self.pb.update('Writing weave')
393
self.repo._activate_new_inventory()
349
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.transaction)
350
self.repo.control_weaves.delete('inventory.new', self.transaction)
394
351
self.inventory = None
395
ui.ui_factory.note('Inventory regenerated.')
352
self.pb.note('Inventory regenerated.')
354
def _check_garbage_inventories(self):
355
"""Check for garbage inventories which we cannot trust
357
We cant trust them because their pre-requisite file data may not
358
be present - all we know is that their revision was not installed.
360
inventories = set(self.inventory.versions())
361
revisions = set(self.revisions.versions())
362
garbage = inventories.difference(revisions)
363
self.garbage_inventories = len(garbage)
364
for revision_id in garbage:
365
mutter('Garbage inventory {%s} found.', revision_id)
397
367
def _fix_text_parents(self):
398
368
"""Fix bad versionedfile parent entries.
404
374
parent lists, and replaces the versionedfile with a corrected version.
406
376
transaction = self.repo.get_transaction()
407
versions = [key[-1] for key in self.revisions.keys()]
408
mutter('Prepopulating revision text cache with %d revisions',
410
vf_checker = self.repo._get_versioned_file_checker()
411
bad_parents, unused_versions = vf_checker.check_file_version_parents(
412
self.repo.texts, self.pb)
413
text_index = vf_checker.text_index
414
per_id_bad_parents = {}
415
for key in unused_versions:
416
# Ensure that every file with unused versions gets rewritten.
417
# NB: This is really not needed, reconcile != pack.
418
per_id_bad_parents[key[0]] = {}
419
# Generate per-knit/weave data.
420
for key, details in bad_parents.iteritems():
423
knit_parents = tuple([parent[-1] for parent in details[0]])
424
correct_parents = tuple([parent[-1] for parent in details[1]])
425
file_details = per_id_bad_parents.setdefault(file_id, {})
426
file_details[rev_id] = (knit_parents, correct_parents)
427
file_id_versions = {}
428
for text_key in text_index:
429
versions_list = file_id_versions.setdefault(text_key[0], [])
430
versions_list.append(text_key[1])
431
# Do the reconcile of individual weaves.
432
for num, file_id in enumerate(per_id_bad_parents):
377
revision_versions = repository._RevisionTextVersionCache(self.repo)
378
versions = self.revisions.versions()
379
revision_versions.prepopulate_revs(versions)
380
for num, file_id in enumerate(self.repo.weave_store):
433
381
self.pb.update('Fixing text parents', num,
434
len(per_id_bad_parents))
435
versions_with_bad_parents = per_id_bad_parents[file_id]
436
id_unused_versions = set(key[-1] for key in unused_versions
437
if key[0] == file_id)
438
if file_id in file_id_versions:
439
file_versions = file_id_versions[file_id]
441
# This id was present in the disk store but is not referenced
442
# by any revision at all.
444
self._fix_text_parent(file_id, versions_with_bad_parents,
445
id_unused_versions, file_versions)
382
len(self.repo.weave_store))
383
vf = self.repo.weave_store.get_weave(file_id, transaction)
384
vf_checker = self.repo.get_versioned_file_checker(
385
versions, revision_versions)
386
versions_with_bad_parents = vf_checker.check_file_version_parents(
388
if len(versions_with_bad_parents) == 0:
390
self._fix_text_parent(file_id, vf, versions_with_bad_parents)
447
def _fix_text_parent(self, file_id, versions_with_bad_parents,
448
unused_versions, all_versions):
392
def _fix_text_parent(self, file_id, vf, versions_with_bad_parents):
449
393
"""Fix bad versionedfile entries in a single versioned file."""
450
mutter('fixing text parent: %r (%d versions)', file_id,
451
len(versions_with_bad_parents))
452
mutter('(%d are unused)', len(unused_versions))
453
new_file_id = 'temp:%s' % file_id
394
new_vf = self.repo.weave_store.get_empty('temp:%s' % file_id,
456
for version in all_versions:
457
if version in unused_versions:
459
elif version in versions_with_bad_parents:
397
for version in vf.versions():
398
if version in versions_with_bad_parents:
460
399
parents = versions_with_bad_parents[version][1]
462
pmap = self.repo.texts.get_parent_map([(file_id, version)])
463
parents = [key[-1] for key in pmap[(file_id, version)]]
464
new_parents[(new_file_id, version)] = [
465
(new_file_id, parent) for parent in parents]
466
needed_keys.add((file_id, version))
467
def fix_parents(stream):
468
for record in stream:
469
bytes = record.get_bytes_as('fulltext')
470
new_key = (new_file_id, record.key[-1])
471
parents = new_parents[new_key]
472
yield FulltextContentFactory(new_key, parents, record.sha1, bytes)
473
stream = self.repo.texts.get_record_stream(needed_keys, 'topological', True)
474
self.repo._remove_file_id(new_file_id)
475
self.repo.texts.insert_record_stream(fix_parents(stream))
476
self.repo._remove_file_id(file_id)
478
self.repo._move_file_id(new_file_id, file_id)
401
parents = vf.get_parents(version)
402
new_parents[version] = parents
403
for version in TopoSorter(new_parents.items()).iter_topo_order():
404
new_vf.add_lines(version, new_parents[version],
405
vf.get_lines(version))
406
self.repo.weave_store.copy(new_vf, file_id, self.transaction)
407
self.repo.weave_store.delete('temp:%s' % file_id, self.transaction)
481
410
class PackReconciler(RepoReconciler):
488
417
In future this may be a good place to hook in annotation cache checking,
489
418
index recreation etc.
420
XXX: The index corruption that _fix_text_parents performs is needed for
421
packs, but not yet implemented. The basic approach is to:
422
- lock the names list
423
- perform a customised pack() that regenerates data as needed
424
- unlock the names list
492
# XXX: The index corruption that _fix_text_parents performs is needed for
493
# packs, but not yet implemented. The basic approach is to:
494
# - lock the names list
495
# - perform a customised pack() that regenerates data as needed
496
# - unlock the names list
497
# https://bugs.edge.launchpad.net/bzr/+bug/154173
499
427
def _reconcile_steps(self):
500
428
"""Perform the steps to reconcile this repository."""
501
if not self.thorough:
503
collection = self.repo._pack_collection
504
collection.ensure_loaded()
505
collection.lock_names()
506
self.add_cleanup(collection._unlock_names)
507
packs = collection.all_packs()
508
all_revisions = self.repo.all_revision_ids()
509
total_inventories = len(list(
510
collection.inventory_index.combined_index.iter_all_entries()))
511
if len(all_revisions):
512
new_pack = self.repo._reconcile_pack(collection, packs,
513
".reconcile", all_revisions, self.pb)
514
if new_pack is not None:
515
self._discard_and_save(packs)
517
# only make a new pack when there is data to copy.
518
self._discard_and_save(packs)
519
self.garbage_inventories = total_inventories - len(list(
520
collection.inventory_index.combined_index.iter_all_entries()))
522
def _discard_and_save(self, packs):
523
"""Discard some packs from the repository.
525
This removes them from the memory index, saves the in-memory index
526
which makes the newly reconciled pack visible and hides the packs to be
527
discarded, and finally renames the packs being discarded into the
528
obsolete packs directory.
530
:param packs: The packs to discard.
533
self.repo._pack_collection._remove_pack_from_memory(pack)
534
self.repo._pack_collection._save_pack_names()
535
self.repo._pack_collection._obsolete_packs(packs)