80
72
def _reconcile(self):
81
73
"""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
74
self.repo = self.bzrdir.find_repository()
98
ui.ui_factory.note('Reconciling repository %s' %
100
self.pb.update("Reconciling repository", 0, 1)
75
self.pb.note('Reconciling repository %s',
76
self.repo.bzrdir.root_transport.base)
101
77
repo_reconciler = self.repo.reconcile(thorough=True)
102
78
self.inconsistent_parents = repo_reconciler.inconsistent_parents
103
79
self.garbage_inventories = repo_reconciler.garbage_inventories
104
if repo_reconciler.aborted:
106
'Reconcile aborted: revision index has inconsistent parents.')
108
'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.')
80
self.pb.note('Reconciliation complete.')
162
83
class RepoReconciler(object):
163
84
"""Reconciler that reconciles a repository.
165
86
The goal of repository reconciliation is to make any derived data
166
consistent with the core data committed by a user. This can involve
87
consistent with the core data committed by a user. This can involve
167
88
reindexing, or removing unreferenced data if that can interfere with
168
89
queries in a given repository.
234
152
# put a revision into the graph.
235
153
self._graph_revision(rev_id)
236
154
self._check_garbage_inventories()
237
# if there are no inconsistent_parents and
155
# if there are no inconsistent_parents and
238
156
# (no garbage inventories or we are not doing a thorough check)
239
if (not self.inconsistent_parents and
157
if (not self.inconsistent_parents and
240
158
(not self.garbage_inventories or not self.thorough)):
241
ui.ui_factory.note('Inventory ok.')
159
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()
161
self.pb.update('Backing up inventory...', 0, 0)
162
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.repo.get_transaction())
163
self.pb.note('Backup Inventory created.')
164
# asking for '' should never return a non-empty weave
165
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
166
self.repo.get_transaction())
248
168
# we have topological order of revisions and non ghost parents ready.
249
169
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
170
for rev_id in TopoSorter(self._rev_graph.items()).iter_topo_order():
171
parents = self._rev_graph[rev_id]
172
# double check this really is in topological order.
173
unavailable = [p for p in parents if p not in new_inventory_vf]
174
assert len(unavailable) == 0
175
# this entry has all the non ghost parents in the inventory
177
self._reweave_step('adding inventories')
178
if isinstance(new_inventory_vf, WeaveFile):
179
# It's really a WeaveFile, but we call straight into the
180
# Weave's add method to disable the auto-write-out behaviour.
181
# This is done to avoid a revision_count * time-to-write additional overhead on
183
new_inventory_vf._check_write_ok()
184
Weave._add_lines(new_inventory_vf, rev_id, parents,
185
self.inventory.get_lines(rev_id), None, None, None, False, True)
187
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
189
if isinstance(new_inventory_vf, WeaveFile):
190
new_inventory_vf._save()
191
# 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()
193
assert set(new_inventory_vf.versions()) == self.pending
261
194
self.pb.update('Writing weave')
262
self.repo._activate_new_inventory()
195
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.repo.get_transaction())
196
self.repo.control_weaves.delete('inventory.new', self.repo.get_transaction())
263
197
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')
198
self.pb.note('Inventory regenerated.')
286
200
def _setup_steps(self, new_total):
287
201
"""Setup the markers we need to control the progress bar."""
294
208
# analyse revision id rev_id and put it in the stack.
295
209
self._reweave_step('loading revisions')
296
210
rev = self.repo.get_revision_reconcile(rev_id)
211
assert rev.revision_id == rev_id
298
213
for parent in rev.parent_ids:
299
214
if self._parent_is_available(parent):
300
215
parents.append(parent)
302
217
mutter('found ghost %s', parent)
303
self._rev_graph[rev_id] = parents
218
self._rev_graph[rev_id] = parents
219
if self._parents_are_inconsistent(rev_id, parents):
220
self.inconsistent_parents += 1
221
mutter('Inconsistent inventory parents: id {%s} '
222
'inventory claims %r, '
223
'available parents are %r, '
224
'unavailable parents are %r',
226
set(self.inventory.get_parents(rev_id)),
228
set(rev.parent_ids).difference(set(parents)))
230
def _parents_are_inconsistent(self, rev_id, parents):
231
"""Return True if the parents list of rev_id does not match the weave.
233
This detects inconsistencies based on the self.thorough value:
234
if thorough is on, the first parent value is checked as well as ghost
236
Otherwise only the ghost differences are evaluated.
238
weave_parents = self.inventory.get_parents(rev_id)
239
weave_missing_old_ghosts = set(weave_parents) != set(parents)
240
first_parent_is_wrong = (
241
len(weave_parents) and len(parents) and
242
parents[0] != weave_parents[0])
244
return weave_missing_old_ghosts or first_parent_is_wrong
246
return weave_missing_old_ghosts
305
248
def _check_garbage_inventories(self):
306
249
"""Check for garbage inventories which we cannot trust
343
284
def _reconcile_steps(self):
344
285
"""Perform the steps to reconcile this repository."""
345
286
if self.thorough:
348
except errors.BzrCheckError:
351
288
# knits never suffer this
352
289
self._gc_inventory()
353
self._fix_text_parents()
355
291
def _load_indexes(self):
356
292
"""Load indexes for the reconciliation."""
357
293
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)
361
self.repo._check_for_inconsistent_revision_parents()
362
self.revisions = self.repo.revisions
363
self.pb.update('Reading indexes', 2, 2)
294
self.pb.update('Reading indexes.', 0, 2)
295
self.inventory = self.repo.get_inventory_weave()
296
self.pb.update('Reading indexes.', 1, 2)
297
self.revisions = self.repo._revision_store.get_revision_file(self.transaction)
298
self.pb.update('Reading indexes.', 2, 2)
365
300
def _gc_inventory(self):
366
301
"""Remove inventories that are not referenced from the revision store."""
367
self.pb.update('Checking unused inventories', 0, 1)
302
self.pb.update('Checking unused inventories.', 0, 1)
368
303
self._check_garbage_inventories()
369
self.pb.update('Checking unused inventories', 1, 3)
304
self.pb.update('Checking unused inventories.', 1, 3)
370
305
if not self.garbage_inventories:
371
ui.ui_factory.note('Inventory ok.')
306
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')
308
self.pb.update('Backing up inventory...', 0, 0)
309
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.transaction)
310
self.pb.note('Backup Inventory created.')
376
311
# asking for '' should never return a non-empty weave
377
new_inventories = self.repo._temp_inventories()
312
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
378
315
# 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)
316
self._setup_steps(len(self.revisions))
317
for rev_id in TopoSorter(self.revisions.get_graph().items()).iter_topo_order():
318
parents = self.revisions.get_parents(rev_id)
319
# double check this really is in topological order.
320
unavailable = [p for p in parents if p not in new_inventory_vf]
321
assert len(unavailable) == 0
322
# this entry has all the non ghost parents in the inventory
324
self._reweave_step('adding inventories')
325
# ugly but needed, weaves are just way tooooo slow else.
326
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
388
328
# 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()
330
assert set(new_inventory_vf.versions()) == set(self.revisions.versions())
392
331
self.pb.update('Writing weave')
393
self.repo._activate_new_inventory()
332
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.transaction)
333
self.repo.control_weaves.delete('inventory.new', self.transaction)
394
334
self.inventory = None
395
ui.ui_factory.note('Inventory regenerated.')
397
def _fix_text_parents(self):
398
"""Fix bad versionedfile parent entries.
400
It is possible for the parents entry in a versionedfile entry to be
401
inconsistent with the values in the revision and inventory.
403
This method finds entries with such inconsistencies, corrects their
404
parent lists, and replaces the versionedfile with a corrected version.
335
self.pb.note('Inventory regenerated.')
337
def _check_garbage_inventories(self):
338
"""Check for garbage inventories which we cannot trust
340
We cant trust them because their pre-requisite file data may not
341
be present - all we know is that their revision was not installed.
406
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):
433
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)
447
def _fix_text_parent(self, file_id, versions_with_bad_parents,
448
unused_versions, all_versions):
449
"""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
456
for version in all_versions:
457
if version in unused_versions:
459
elif version in versions_with_bad_parents:
460
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)
343
inventories = set(self.inventory.versions())
344
revisions = set(self.revisions.versions())
345
garbage = inventories.difference(revisions)
346
self.garbage_inventories = len(garbage)
347
for revision_id in garbage:
348
mutter('Garbage inventory {%s} found.', revision_id)
481
351
class PackReconciler(RepoReconciler):
489
359
index recreation etc.
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
362
def _reconcile_steps(self):
500
363
"""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)
added
removed
bzrlib/reconcile.py
