69
81
def _reconcile(self):
70
82
"""Helper function for performing reconciliation."""
83
self._reconcile_branch()
84
self._reconcile_repository()
86
def _reconcile_branch(self):
88
self.branch = self.bzrdir.open_branch()
89
except errors.NotBranchError:
90
# Nothing to check here
91
self.fixed_branch_history = None
93
self.pb.note('Reconciling branch %s',
95
branch_reconciler = self.branch.reconcile(thorough=True)
96
self.fixed_branch_history = branch_reconciler.fixed_history
98
def _reconcile_repository(self):
71
99
self.repo = self.bzrdir.find_repository()
72
100
self.pb.note('Reconciling repository %s',
73
101
self.repo.bzrdir.root_transport.base)
102
self.pb.update("Reconciling repository", 0, 1)
74
103
repo_reconciler = self.repo.reconcile(thorough=True)
75
104
self.inconsistent_parents = repo_reconciler.inconsistent_parents
76
105
self.garbage_inventories = repo_reconciler.garbage_inventories
77
self.pb.note('Reconciliation complete.')
106
if repo_reconciler.aborted:
108
'Reconcile aborted: revision index has inconsistent parents.')
110
'Run "bzr check" for more details.')
112
self.pb.note('Reconciliation complete.')
115
class BranchReconciler(object):
116
"""Reconciler that works on a branch."""
118
def __init__(self, a_branch, thorough=False):
119
self.fixed_history = None
120
self.thorough = thorough
121
self.branch = a_branch
124
self.branch.lock_write()
126
self.pb = ui.ui_factory.nested_progress_bar()
128
self._reconcile_steps()
134
def _reconcile_steps(self):
135
self._reconcile_revision_history()
137
def _reconcile_revision_history(self):
138
repo = self.branch.repository
139
last_revno, last_revision_id = self.branch.last_revision_info()
140
real_history = list(repo.iter_reverse_revision_history(
142
real_history.reverse()
143
if last_revno != len(real_history):
144
self.fixed_history = True
145
# Technically for Branch5 formats, it is more efficient to use
146
# set_revision_history, as this will regenerate it again.
147
# Not really worth a whole BranchReconciler class just for this,
149
self.pb.note('Fixing last revision info %s => %s',
150
last_revno, len(real_history))
151
self.branch.set_last_revision_info(len(real_history),
154
self.fixed_history = False
155
self.pb.note('revision_history ok.')
80
158
class RepoReconciler(object):
81
159
"""Reconciler that reconciles a repository.
161
The goal of repository reconciliation is to make any derived data
162
consistent with the core data committed by a user. This can involve
163
reindexing, or removing unreferenced data if that can interfere with
164
queries in a given repository.
83
166
Currently this consists of an inventory reweave with revision cross-checks.
151
236
self.pb.note('Inventory ok.')
153
238
self.pb.update('Backing up inventory...', 0, 0)
154
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.repo.get_transaction())
239
self.repo._backup_inventory()
155
240
self.pb.note('Backup Inventory created.')
156
# asking for '' should never return a non-empty weave
157
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
158
self.repo.get_transaction())
241
new_inventories = self.repo._temp_inventories()
160
243
# we have topological order of revisions and non ghost parents ready.
161
244
self._setup_steps(len(self._rev_graph))
162
for rev_id in TopoSorter(self._rev_graph.items()).iter_topo_order():
163
parents = self._rev_graph[rev_id]
164
# double check this really is in topological order.
165
unavailable = [p for p in parents if p not in new_inventory_vf]
166
assert len(unavailable) == 0
167
# this entry has all the non ghost parents in the inventory
169
self._reweave_step('adding inventories')
170
if isinstance(new_inventory_vf, WeaveFile):
171
# It's really a WeaveFile, but we call straight into the
172
# Weave's add method to disable the auto-write-out behaviour.
173
# This is done to avoid a revision_count * time-to-write additional overhead on
175
new_inventory_vf._check_write_ok()
176
Weave._add_lines(new_inventory_vf, rev_id, parents, self.inventory.get_lines(rev_id),
179
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
181
if isinstance(new_inventory_vf, WeaveFile):
182
new_inventory_vf._save()
183
# if this worked, the set of new_inventory_vf.names should equal
245
revision_keys = [(rev_id,) for rev_id in
246
TopoSorter(self._rev_graph.items()).iter_topo_order()]
247
stream = self._change_inv_parents(
248
self.inventory.get_record_stream(revision_keys, 'unordered', True),
249
self._new_inv_parents,
251
new_inventories.insert_record_stream(stream)
252
# if this worked, the set of new_inventories.keys should equal
185
assert set(new_inventory_vf.versions()) == self.pending
254
if not (set(new_inventories.keys()) ==
255
set([(revid,) for revid in self.pending])):
256
raise AssertionError()
186
257
self.pb.update('Writing weave')
187
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.repo.get_transaction())
188
self.repo.control_weaves.delete('inventory.new', self.repo.get_transaction())
258
self.repo._activate_new_inventory()
189
259
self.inventory = None
190
260
self.pb.note('Inventory regenerated.')
262
def _new_inv_parents(self, revision_key):
263
"""Lookup ghost-filtered parents for revision_key."""
264
# Use the filtered ghostless parents list:
265
return tuple([(revid,) for revid in self._rev_graph[revision_key[-1]]])
267
def _change_inv_parents(self, stream, get_parents, all_revision_keys):
268
"""Adapt a record stream to reconcile the parents."""
269
for record in stream:
270
wanted_parents = get_parents(record.key)
271
if wanted_parents and wanted_parents[0] not in all_revision_keys:
272
# The check for the left most parent only handles knit
273
# compressors, but this code only applies to knit and weave
274
# repositories anyway.
275
bytes = record.get_bytes_as('fulltext')
276
yield FulltextContentFactory(record.key, wanted_parents, record.sha1, bytes)
278
adapted_record = AdapterFactory(record.key, wanted_parents, record)
280
self._reweave_step('adding inventories')
192
282
def _setup_steps(self, new_total):
193
283
"""Setup the markers we need to control the progress bar."""
194
284
self.total = new_total
200
290
# analyse revision id rev_id and put it in the stack.
201
291
self._reweave_step('loading revisions')
202
292
rev = self.repo.get_revision_reconcile(rev_id)
203
assert rev.revision_id == rev_id
205
294
for parent in rev.parent_ids:
206
295
if self._parent_is_available(parent):
207
296
parents.append(parent)
209
298
mutter('found ghost %s', parent)
210
self._rev_graph[rev_id] = parents
211
if self._parents_are_inconsistent(rev_id, parents):
212
self.inconsistent_parents += 1
213
mutter('Inconsistent inventory parents: id {%s} '
214
'inventory claims %r, '
215
'available parents are %r, '
216
'unavailable parents are %r',
218
set(self.inventory.get_parents(rev_id)),
220
set(rev.parent_ids).difference(set(parents)))
222
def _parents_are_inconsistent(self, rev_id, parents):
223
"""Return True if the parents list of rev_id does not match the weave.
225
This detects inconsistencies based on the self.thorough value:
226
if thorough is on, the first parent value is checked as well as ghost
228
Otherwise only the ghost differences are evaluated.
230
weave_parents = self.inventory.get_parents(rev_id)
231
weave_missing_old_ghosts = set(weave_parents) != set(parents)
232
first_parent_is_wrong = (
233
len(weave_parents) and len(parents) and
234
parents[0] != weave_parents[0])
236
return weave_missing_old_ghosts or first_parent_is_wrong
238
return weave_missing_old_ghosts
299
self._rev_graph[rev_id] = parents
240
301
def _check_garbage_inventories(self):
241
302
"""Check for garbage inventories which we cannot trust
300
367
self.pb.note('Inventory ok.')
302
369
self.pb.update('Backing up inventory...', 0, 0)
303
self.repo.control_weaves.copy(self.inventory, 'inventory.backup', self.transaction)
370
self.repo._backup_inventory()
304
371
self.pb.note('Backup Inventory created.')
305
372
# asking for '' should never return a non-empty weave
306
new_inventory_vf = self.repo.control_weaves.get_empty('inventory.new',
373
new_inventories = self.repo._temp_inventories()
309
374
# we have topological order of revisions and non ghost parents ready.
310
self._setup_steps(len(self.revisions))
311
for rev_id in TopoSorter(self.revisions.get_graph().items()).iter_topo_order():
312
parents = self.revisions.get_parents(rev_id)
313
# double check this really is in topological order.
314
unavailable = [p for p in parents if p not in new_inventory_vf]
315
assert len(unavailable) == 0
316
# this entry has all the non ghost parents in the inventory
318
self._reweave_step('adding inventories')
319
# ugly but needed, weaves are just way tooooo slow else.
320
new_inventory_vf.add_lines(rev_id, parents, self.inventory.get_lines(rev_id))
375
graph = self.revisions.get_parent_map(self.revisions.keys())
376
revision_keys = list(TopoSorter(graph).iter_topo_order())
377
revision_ids = [key[-1] for key in revision_keys]
378
self._setup_steps(len(revision_keys))
379
stream = self._change_inv_parents(
380
self.inventory.get_record_stream(revision_keys, 'unordered', True),
383
new_inventories.insert_record_stream(stream)
322
384
# if this worked, the set of new_inventory_vf.names should equal
324
assert set(new_inventory_vf.versions()) == set(self.revisions.versions())
385
# the revisionds list
386
if not(set(new_inventories.keys()) == set(revision_keys)):
387
raise AssertionError()
325
388
self.pb.update('Writing weave')
326
self.repo.control_weaves.copy(new_inventory_vf, 'inventory', self.transaction)
327
self.repo.control_weaves.delete('inventory.new', self.transaction)
389
self.repo._activate_new_inventory()
328
390
self.inventory = None
329
391
self.pb.note('Inventory regenerated.')
331
def _check_garbage_inventories(self):
332
"""Check for garbage inventories which we cannot trust
334
We cant trust them because their pre-requisite file data may not
335
be present - all we know is that their revision was not installed.
337
inventories = set(self.inventory.versions())
338
revisions = set(self.revisions.versions())
339
garbage = inventories.difference(revisions)
340
self.garbage_inventories = len(garbage)
341
for revision_id in garbage:
342
mutter('Garbage inventory {%s} found.', revision_id)
393
def _fix_text_parents(self):
394
"""Fix bad versionedfile parent entries.
396
It is possible for the parents entry in a versionedfile entry to be
397
inconsistent with the values in the revision and inventory.
399
This method finds entries with such inconsistencies, corrects their
400
parent lists, and replaces the versionedfile with a corrected version.
402
transaction = self.repo.get_transaction()
403
versions = [key[-1] for key in self.revisions.keys()]
404
mutter('Prepopulating revision text cache with %d revisions',
406
vf_checker = self.repo._get_versioned_file_checker()
407
bad_parents, unused_versions = vf_checker.check_file_version_parents(
408
self.repo.texts, self.pb)
409
text_index = vf_checker.text_index
410
per_id_bad_parents = {}
411
for key in unused_versions:
412
# Ensure that every file with unused versions gets rewritten.
413
# NB: This is really not needed, reconcile != pack.
414
per_id_bad_parents[key[0]] = {}
415
# Generate per-knit/weave data.
416
for key, details in bad_parents.iteritems():
419
knit_parents = tuple([parent[-1] for parent in details[0]])
420
correct_parents = tuple([parent[-1] for parent in details[1]])
421
file_details = per_id_bad_parents.setdefault(file_id, {})
422
file_details[rev_id] = (knit_parents, correct_parents)
423
file_id_versions = {}
424
for text_key in text_index:
425
versions_list = file_id_versions.setdefault(text_key[0], [])
426
versions_list.append(text_key[1])
427
# Do the reconcile of individual weaves.
428
for num, file_id in enumerate(per_id_bad_parents):
429
self.pb.update('Fixing text parents', num,
430
len(per_id_bad_parents))
431
versions_with_bad_parents = per_id_bad_parents[file_id]
432
id_unused_versions = set(key[-1] for key in unused_versions
433
if key[0] == file_id)
434
if file_id in file_id_versions:
435
file_versions = file_id_versions[file_id]
437
# This id was present in the disk store but is not referenced
438
# by any revision at all.
440
self._fix_text_parent(file_id, versions_with_bad_parents,
441
id_unused_versions, file_versions)
443
def _fix_text_parent(self, file_id, versions_with_bad_parents,
444
unused_versions, all_versions):
445
"""Fix bad versionedfile entries in a single versioned file."""
446
mutter('fixing text parent: %r (%d versions)', file_id,
447
len(versions_with_bad_parents))
448
mutter('(%d are unused)', len(unused_versions))
449
new_file_id = 'temp:%s' % file_id
452
for version in all_versions:
453
if version in unused_versions:
455
elif version in versions_with_bad_parents:
456
parents = versions_with_bad_parents[version][1]
458
pmap = self.repo.texts.get_parent_map([(file_id, version)])
459
parents = [key[-1] for key in pmap[(file_id, version)]]
460
new_parents[(new_file_id, version)] = [
461
(new_file_id, parent) for parent in parents]
462
needed_keys.add((file_id, version))
463
def fix_parents(stream):
464
for record in stream:
465
bytes = record.get_bytes_as('fulltext')
466
new_key = (new_file_id, record.key[-1])
467
parents = new_parents[new_key]
468
yield FulltextContentFactory(new_key, parents, record.sha1, bytes)
469
stream = self.repo.texts.get_record_stream(needed_keys, 'topological', True)
470
self.repo._remove_file_id(new_file_id)
471
self.repo.texts.insert_record_stream(fix_parents(stream))
472
self.repo._remove_file_id(file_id)
474
self.repo._move_file_id(new_file_id, file_id)
477
class PackReconciler(RepoReconciler):
478
"""Reconciler that reconciles a pack based repository.
480
Garbage inventories do not affect ancestry queries, and removal is
481
considerably more expensive as there is no separate versioned file for
482
them, so they are not cleaned. In short it is currently a no-op.
484
In future this may be a good place to hook in annotation cache checking,
485
index recreation etc.
488
# XXX: The index corruption that _fix_text_parents performs is needed for
489
# packs, but not yet implemented. The basic approach is to:
490
# - lock the names list
491
# - perform a customised pack() that regenerates data as needed
492
# - unlock the names list
493
# https://bugs.edge.launchpad.net/bzr/+bug/154173
495
def _reconcile_steps(self):
496
"""Perform the steps to reconcile this repository."""
497
if not self.thorough:
499
collection = self.repo._pack_collection
500
collection.ensure_loaded()
501
collection.lock_names()
503
packs = collection.all_packs()
504
all_revisions = self.repo.all_revision_ids()
505
total_inventories = len(list(
506
collection.inventory_index.combined_index.iter_all_entries()))
507
if len(all_revisions):
508
self._packer = repofmt.pack_repo.ReconcilePacker(
509
collection, packs, ".reconcile", all_revisions)
510
new_pack = self._packer.pack(pb=self.pb)
511
if new_pack is not None:
512
self._discard_and_save(packs)
514
# only make a new pack when there is data to copy.
515
self._discard_and_save(packs)
516
self.garbage_inventories = total_inventories - len(list(
517
collection.inventory_index.combined_index.iter_all_entries()))
519
collection._unlock_names()
521
def _discard_and_save(self, packs):
522
"""Discard some packs from the repository.
524
This removes them from the memory index, saves the in-memory index
525
which makes the newly reconciled pack visible and hides the packs to be
526
discarded, and finally renames the packs being discarded into the
527
obsolete packs directory.
529
:param packs: The packs to discard.
532
self.repo._pack_collection._remove_pack_from_memory(pack)
533
self.repo._pack_collection._save_pack_names()
534
self.repo._pack_collection._obsolete_packs(packs)
added
removed
bzrlib/reconcile.py
