1168
1123
# The old API returned a list, should this actually be a set?
1169
1124
return parent_map.keys()
1171
def _check_inventories(self, checker):
1172
"""Check the inventories found from the revision scan.
1174
This is responsible for verifying the sha1 of inventories and
1175
creating a pending_keys set that covers data referenced by inventories.
1177
bar = ui.ui_factory.nested_progress_bar()
1179
self._do_check_inventories(checker, bar)
1183
def _do_check_inventories(self, checker, bar):
1184
"""Helper for _check_inventories."""
1186
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1187
kinds = ['chk_bytes', 'texts']
1188
count = len(checker.pending_keys)
1189
bar.update("inventories", 0, 2)
1190
current_keys = checker.pending_keys
1191
checker.pending_keys = {}
1192
# Accumulate current checks.
1193
for key in current_keys:
1194
if key[0] != 'inventories' and key[0] not in kinds:
1195
checker._report_items.append('unknown key type %r' % (key,))
1196
keys[key[0]].add(key[1:])
1197
if keys['inventories']:
1198
# NB: output order *should* be roughly sorted - topo or
1199
# inverse topo depending on repository - either way decent
1200
# to just delta against. However, pre-CHK formats didn't
1201
# try to optimise inventory layout on disk. As such the
1202
# pre-CHK code path does not use inventory deltas.
1204
for record in self.inventories.check(keys=keys['inventories']):
1205
if record.storage_kind == 'absent':
1206
checker._report_items.append(
1207
'Missing inventory {%s}' % (record.key,))
1209
last_object = self._check_record('inventories', record,
1210
checker, last_object,
1211
current_keys[('inventories',) + record.key])
1212
del keys['inventories']
1215
bar.update("texts", 1)
1216
while (checker.pending_keys or keys['chk_bytes']
1218
# Something to check.
1219
current_keys = checker.pending_keys
1220
checker.pending_keys = {}
1221
# Accumulate current checks.
1222
for key in current_keys:
1223
if key[0] not in kinds:
1224
checker._report_items.append('unknown key type %r' % (key,))
1225
keys[key[0]].add(key[1:])
1226
# Check the outermost kind only - inventories || chk_bytes || texts
1230
for record in getattr(self, kind).check(keys=keys[kind]):
1231
if record.storage_kind == 'absent':
1232
checker._report_items.append(
1233
'Missing %s {%s}' % (kind, record.key,))
1235
last_object = self._check_record(kind, record,
1236
checker, last_object, current_keys[(kind,) + record.key])
1240
def _check_record(self, kind, record, checker, last_object, item_data):
1241
"""Check a single text from this repository."""
1242
if kind == 'inventories':
1243
rev_id = record.key[0]
1244
inv = self._deserialise_inventory(rev_id,
1245
record.get_bytes_as('fulltext'))
1246
if last_object is not None:
1247
delta = inv._make_delta(last_object)
1248
for old_path, path, file_id, ie in delta:
1251
ie.check(checker, rev_id, inv)
1253
for path, ie in inv.iter_entries():
1254
ie.check(checker, rev_id, inv)
1255
if self._format.fast_deltas:
1257
elif kind == 'chk_bytes':
1258
# No code written to check chk_bytes for this repo format.
1259
checker._report_items.append(
1260
'unsupported key type chk_bytes for %s' % (record.key,))
1261
elif kind == 'texts':
1262
self._check_text(record, checker, item_data)
1264
checker._report_items.append(
1265
'unknown key type %s for %s' % (kind, record.key))
1267
def _check_text(self, record, checker, item_data):
1268
"""Check a single text."""
1269
# Check it is extractable.
1270
# TODO: check length.
1271
if record.storage_kind == 'chunked':
1272
chunks = record.get_bytes_as(record.storage_kind)
1273
sha1 = osutils.sha_strings(chunks)
1274
length = sum(map(len, chunks))
1276
content = record.get_bytes_as('fulltext')
1277
sha1 = osutils.sha_string(content)
1278
length = len(content)
1279
if item_data and sha1 != item_data[1]:
1280
checker._report_items.append(
1281
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1282
(record.key, sha1, item_data[1], item_data[2]))
1285
1127
def create(a_bzrdir):
1286
1128
"""Construct the current default format repository in a_bzrdir."""
1578
1397
def suspend_write_group(self):
1579
1398
raise errors.UnsuspendableWriteGroup(self)
1581
def get_missing_parent_inventories(self, check_for_missing_texts=True):
1582
"""Return the keys of missing inventory parents for revisions added in
1585
A revision is not complete if the inventory delta for that revision
1586
cannot be calculated. Therefore if the parent inventories of a
1587
revision are not present, the revision is incomplete, and e.g. cannot
1588
be streamed by a smart server. This method finds missing inventory
1589
parents for revisions added in this write group.
1591
if not self._format.supports_external_lookups:
1592
# This is only an issue for stacked repositories
1594
if not self.is_in_write_group():
1595
raise AssertionError('not in a write group')
1597
# XXX: We assume that every added revision already has its
1598
# corresponding inventory, so we only check for parent inventories that
1599
# might be missing, rather than all inventories.
1600
parents = set(self.revisions._index.get_missing_parents())
1601
parents.discard(_mod_revision.NULL_REVISION)
1602
unstacked_inventories = self.inventories._index
1603
present_inventories = unstacked_inventories.get_parent_map(
1604
key[-1:] for key in parents)
1605
parents.difference_update(present_inventories)
1606
if len(parents) == 0:
1607
# No missing parent inventories.
1609
if not check_for_missing_texts:
1610
return set(('inventories', rev_id) for (rev_id,) in parents)
1611
# Ok, now we have a list of missing inventories. But these only matter
1612
# if the inventories that reference them are missing some texts they
1613
# appear to introduce.
1614
# XXX: Texts referenced by all added inventories need to be present,
1615
# but at the moment we're only checking for texts referenced by
1616
# inventories at the graph's edge.
1617
key_deps = self.revisions._index._key_dependencies
1618
key_deps.satisfy_refs_for_keys(present_inventories)
1619
referrers = frozenset(r[0] for r in key_deps.get_referrers())
1620
file_ids = self.fileids_altered_by_revision_ids(referrers)
1621
missing_texts = set()
1622
for file_id, version_ids in file_ids.iteritems():
1623
missing_texts.update(
1624
(file_id, version_id) for version_id in version_ids)
1625
present_texts = self.texts.get_parent_map(missing_texts)
1626
missing_texts.difference_update(present_texts)
1627
if not missing_texts:
1628
# No texts are missing, so all revisions and their deltas are
1631
# Alternatively the text versions could be returned as the missing
1632
# keys, but this is likely to be less data.
1633
missing_keys = set(('inventories', rev_id) for (rev_id,) in parents)
1636
1400
def refresh_data(self):
1637
1401
"""Re-read any data needed to to synchronise with disk.
1860
1615
@needs_read_lock
1861
1616
def get_revisions(self, revision_ids):
1862
"""Get many revisions at once.
1864
Repositories that need to check data on every revision read should
1865
subclass this method.
1617
"""Get many revisions at once."""
1867
1618
return self._get_revisions(revision_ids)
1869
1620
@needs_read_lock
1870
1621
def _get_revisions(self, revision_ids):
1871
1622
"""Core work logic to get many revisions without sanity checks."""
1623
for rev_id in revision_ids:
1624
if not rev_id or not isinstance(rev_id, basestring):
1625
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1626
keys = [(key,) for key in revision_ids]
1627
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1873
for revid, rev in self._iter_revisions(revision_ids):
1875
raise errors.NoSuchRevision(self, revid)
1629
for record in stream:
1630
if record.storage_kind == 'absent':
1631
raise errors.NoSuchRevision(self, record.key[0])
1632
text = record.get_bytes_as('fulltext')
1633
rev = self._serializer.read_revision_from_string(text)
1634
revs[record.key[0]] = rev
1877
1635
return [revs[revid] for revid in revision_ids]
1879
def _iter_revisions(self, revision_ids):
1880
"""Iterate over revision objects.
1882
:param revision_ids: An iterable of revisions to examine. None may be
1883
passed to request all revisions known to the repository. Note that
1884
not all repositories can find unreferenced revisions; for those
1885
repositories only referenced ones will be returned.
1886
:return: An iterator of (revid, revision) tuples. Absent revisions (
1887
those asked for but not available) are returned as (revid, None).
1889
if revision_ids is None:
1890
revision_ids = self.all_revision_ids()
1892
for rev_id in revision_ids:
1893
if not rev_id or not isinstance(rev_id, basestring):
1894
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1895
keys = [(key,) for key in revision_ids]
1896
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1897
for record in stream:
1898
revid = record.key[0]
1899
if record.storage_kind == 'absent':
1902
text = record.get_bytes_as('fulltext')
1903
rev = self._serializer.read_revision_from_string(text)
1638
def get_revision_xml(self, revision_id):
1639
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1640
# would have already do it.
1641
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1642
# TODO: this can't just be replaced by:
1643
# return self._serializer.write_revision_to_string(
1644
# self.get_revision(revision_id))
1645
# as cStringIO preservers the encoding unlike write_revision_to_string
1646
# or some other call down the path.
1647
rev = self.get_revision(revision_id)
1648
rev_tmp = cStringIO.StringIO()
1649
# the current serializer..
1650
self._serializer.write_revision(rev, rev_tmp)
1652
return rev_tmp.getvalue()
1906
1654
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1907
1655
"""Produce a generator of revision deltas.
2357
2079
:param revision_ids: The expected revision ids of the inventories.
2358
:param ordering: optional ordering, e.g. 'topological'. If not
2359
specified, the order of revision_ids will be preserved (by
2360
buffering if necessary).
2361
2080
:return: An iterator of inventories.
2363
2082
if ((None in revision_ids)
2364
2083
or (_mod_revision.NULL_REVISION in revision_ids)):
2365
2084
raise ValueError('cannot get null revision inventory')
2366
return self._iter_inventories(revision_ids, ordering)
2085
return self._iter_inventories(revision_ids)
2368
def _iter_inventories(self, revision_ids, ordering):
2087
def _iter_inventories(self, revision_ids):
2369
2088
"""single-document based inventory iteration."""
2370
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2371
for text, revision_id in inv_xmls:
2372
yield self._deserialise_inventory(revision_id, text)
2089
for text, revision_id in self._iter_inventory_xmls(revision_ids):
2090
yield self.deserialise_inventory(revision_id, text)
2374
def _iter_inventory_xmls(self, revision_ids, ordering):
2375
if ordering is None:
2376
order_as_requested = True
2377
ordering = 'unordered'
2379
order_as_requested = False
2092
def _iter_inventory_xmls(self, revision_ids):
2380
2093
keys = [(revision_id,) for revision_id in revision_ids]
2383
if order_as_requested:
2384
key_iter = iter(keys)
2385
next_key = key_iter.next()
2386
stream = self.inventories.get_record_stream(keys, ordering, True)
2094
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2387
2095
text_chunks = {}
2388
2096
for record in stream:
2389
2097
if record.storage_kind != 'absent':
2390
chunks = record.get_bytes_as('chunked')
2391
if order_as_requested:
2392
text_chunks[record.key] = chunks
2394
yield ''.join(chunks), record.key[-1]
2098
text_chunks[record.key] = record.get_bytes_as('chunked')
2396
2100
raise errors.NoSuchRevision(self, record.key)
2397
if order_as_requested:
2398
# Yield as many results as we can while preserving order.
2399
while next_key in text_chunks:
2400
chunks = text_chunks.pop(next_key)
2401
yield ''.join(chunks), next_key[-1]
2403
next_key = key_iter.next()
2404
except StopIteration:
2405
# We still want to fully consume the get_record_stream,
2406
# just in case it is not actually finished at this point
2102
chunks = text_chunks.pop(key)
2103
yield ''.join(chunks), key[-1]
2410
def _deserialise_inventory(self, revision_id, xml):
2105
def deserialise_inventory(self, revision_id, xml):
2411
2106
"""Transform the xml into an inventory object.
2413
2108
:param revision_id: The expected revision id of the inventory.
2414
2109
:param xml: A serialised inventory.
2416
2111
result = self._serializer.read_inventory_from_string(xml, revision_id,
2417
entry_cache=self._inventory_entry_cache,
2418
return_from_cache=self._safe_to_return_from_cache)
2112
entry_cache=self._inventory_entry_cache)
2419
2113
if result.revision_id != revision_id:
2420
2114
raise AssertionError('revision id mismatch %s != %s' % (
2421
2115
result.revision_id, revision_id))
2118
def serialise_inventory(self, inv):
2119
return self._serializer.write_inventory_to_string(inv)
2121
def _serialise_inventory_to_lines(self, inv):
2122
return self._serializer.write_inventory_to_lines(inv)
2424
2124
def get_serializer_format(self):
2425
2125
return self._serializer.format_num
2427
2127
@needs_read_lock
2428
def _get_inventory_xml(self, revision_id):
2429
"""Get serialized inventory as a string."""
2430
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2128
def get_inventory_xml(self, revision_id):
2129
"""Get inventory XML as a file object."""
2130
texts = self._iter_inventory_xmls([revision_id])
2432
2132
text, revision_id = texts.next()
2433
2133
except StopIteration:
2434
2134
raise errors.HistoryMissing(self, 'inventory', revision_id)
2437
def get_rev_id_for_revno(self, revno, known_pair):
2438
"""Return the revision id of a revno, given a later (revno, revid)
2439
pair in the same history.
2441
:return: if found (True, revid). If the available history ran out
2442
before reaching the revno, then this returns
2443
(False, (closest_revno, closest_revid)).
2138
def get_inventory_sha1(self, revision_id):
2139
"""Return the sha1 hash of the inventory entry
2445
known_revno, known_revid = known_pair
2446
partial_history = [known_revid]
2447
distance_from_known = known_revno - revno
2448
if distance_from_known < 0:
2450
'requested revno (%d) is later than given known revno (%d)'
2451
% (revno, known_revno))
2454
self, partial_history, stop_index=distance_from_known)
2455
except errors.RevisionNotPresent, err:
2456
if err.revision_id == known_revid:
2457
# The start revision (known_revid) wasn't found.
2459
# This is a stacked repository with no fallbacks, or a there's a
2460
# left-hand ghost. Either way, even though the revision named in
2461
# the error isn't in this repo, we know it's the next step in this
2462
# left-hand history.
2463
partial_history.append(err.revision_id)
2464
if len(partial_history) <= distance_from_known:
2465
# Didn't find enough history to get a revid for the revno.
2466
earliest_revno = known_revno - len(partial_history) + 1
2467
return (False, (earliest_revno, partial_history[-1]))
2468
if len(partial_history) - 1 > distance_from_known:
2469
raise AssertionError('_iter_for_revno returned too much history')
2470
return (True, partial_history[-1])
2141
return self.get_revision(revision_id).inventory_sha1
2472
2143
def iter_reverse_revision_history(self, revision_id):
2473
2144
"""Iterate backwards through revision ids in the lefthand history
2725
2391
return record.get_bytes_as('fulltext')
2727
2393
@needs_read_lock
2728
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
2394
def check(self, revision_ids=None):
2729
2395
"""Check consistency of all history of given revision_ids.
2731
2397
Different repository implementations should override _check().
2733
2399
:param revision_ids: A non-empty list of revision_ids whose ancestry
2734
2400
will be checked. Typically the last revision_id of a branch.
2735
:param callback_refs: A dict of check-refs to resolve and callback
2736
the check/_check method on the items listed as wanting the ref.
2738
:param check_repo: If False do not check the repository contents, just
2739
calculate the data callback_refs requires and call them back.
2741
return self._check(revision_ids, callback_refs=callback_refs,
2742
check_repo=check_repo)
2402
return self._check(revision_ids)
2744
def _check(self, revision_ids, callback_refs, check_repo):
2745
result = check.Check(self, check_repo=check_repo)
2746
result.check(callback_refs)
2404
def _check(self, revision_ids):
2405
result = check.Check(self)
2749
def _warn_if_deprecated(self, branch=None):
2409
def _warn_if_deprecated(self):
2750
2410
global _deprecation_warning_done
2751
2411
if _deprecation_warning_done:
2755
conf = config.GlobalConfig()
2757
conf = branch.get_config()
2758
if conf.suppress_warning('format_deprecation'):
2760
warning("Format %s for %s is deprecated -"
2761
" please use 'bzr upgrade' to get better performance"
2762
% (self._format, self.bzrdir.transport.base))
2764
_deprecation_warning_done = True
2413
_deprecation_warning_done = True
2414
warning("Format %s for %s is deprecated - please use 'bzr upgrade' to get better performance"
2415
% (self._format, self.bzrdir.transport.base))
2766
2417
def supports_rich_root(self):
2767
2418
return self._format.rich_root_data
3706
3298
return self.source.revision_ids_to_search_result(result_set)
3709
class InterDifferingSerializer(InterRepository):
3301
class InterPackRepo(InterSameDataRepository):
3302
"""Optimised code paths between Pack based repositories."""
3305
def _get_repo_format_to_test(self):
3306
from bzrlib.repofmt import pack_repo
3307
return pack_repo.RepositoryFormatKnitPack1()
3310
def is_compatible(source, target):
3311
"""Be compatible with known Pack formats.
3313
We don't test for the stores being of specific types because that
3314
could lead to confusing results, and there is no need to be
3317
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
3319
are_packs = (isinstance(source._format, RepositoryFormatPack) and
3320
isinstance(target._format, RepositoryFormatPack))
3321
except AttributeError:
3323
return are_packs and InterRepository._same_model(source, target)
3326
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
3328
"""See InterRepository.fetch()."""
3329
if (len(self.source._fallback_repositories) > 0 or
3330
len(self.target._fallback_repositories) > 0):
3331
# The pack layer is not aware of fallback repositories, so when
3332
# fetching from a stacked repository or into a stacked repository
3333
# we use the generic fetch logic which uses the VersionedFiles
3334
# attributes on repository.
3335
from bzrlib.fetch import RepoFetcher
3336
fetcher = RepoFetcher(self.target, self.source, revision_id,
3337
pb, find_ghosts, fetch_spec=fetch_spec)
3338
if fetch_spec is not None:
3339
if len(list(fetch_spec.heads)) != 1:
3340
raise AssertionError(
3341
"InterPackRepo.fetch doesn't support "
3342
"fetching multiple heads yet.")
3343
revision_id = list(fetch_spec.heads)[0]
3345
if revision_id is None:
3347
# everything to do - use pack logic
3348
# to fetch from all packs to one without
3349
# inventory parsing etc, IFF nothing to be copied is in the target.
3351
source_revision_ids = frozenset(self.source.all_revision_ids())
3352
revision_ids = source_revision_ids - \
3353
frozenset(self.target.get_parent_map(source_revision_ids))
3354
revision_keys = [(revid,) for revid in revision_ids]
3355
index = self.target._pack_collection.revision_index.combined_index
3356
present_revision_ids = set(item[1][0] for item in
3357
index.iter_entries(revision_keys))
3358
revision_ids = set(revision_ids) - present_revision_ids
3359
# implementing the TODO will involve:
3360
# - detecting when all of a pack is selected
3361
# - avoiding as much as possible pre-selection, so the
3362
# more-core routines such as create_pack_from_packs can filter in
3363
# a just-in-time fashion. (though having a HEADS list on a
3364
# repository might make this a lot easier, because we could
3365
# sensibly detect 'new revisions' without doing a full index scan.
3366
elif _mod_revision.is_null(revision_id):
3371
revision_ids = self.search_missing_revision_ids(revision_id,
3372
find_ghosts=find_ghosts).get_keys()
3373
except errors.NoSuchRevision:
3374
raise errors.InstallFailed([revision_id])
3375
if len(revision_ids) == 0:
3377
return self._pack(self.source, self.target, revision_ids)
3379
def _pack(self, source, target, revision_ids):
3380
from bzrlib.repofmt.pack_repo import Packer
3381
packs = source._pack_collection.all_packs()
3382
pack = Packer(self.target._pack_collection, packs, '.fetch',
3383
revision_ids).pack()
3384
if pack is not None:
3385
self.target._pack_collection._save_pack_names()
3386
copied_revs = pack.get_revision_count()
3387
# Trigger an autopack. This may duplicate effort as we've just done
3388
# a pack creation, but for now it is simpler to think about as
3389
# 'upload data, then repack if needed'.
3390
self.target._pack_collection.autopack()
3391
return (copied_revs, [])
3396
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
3397
"""See InterRepository.missing_revision_ids().
3399
:param find_ghosts: Find ghosts throughout the ancestry of
3402
if not find_ghosts and revision_id is not None:
3403
return self._walk_to_common_revisions([revision_id])
3404
elif revision_id is not None:
3405
# Find ghosts: search for revisions pointing from one repository to
3406
# the other, and vice versa, anywhere in the history of revision_id.
3407
graph = self.target.get_graph(other_repository=self.source)
3408
searcher = graph._make_breadth_first_searcher([revision_id])
3412
next_revs, ghosts = searcher.next_with_ghosts()
3413
except StopIteration:
3415
if revision_id in ghosts:
3416
raise errors.NoSuchRevision(self.source, revision_id)
3417
found_ids.update(next_revs)
3418
found_ids.update(ghosts)
3419
found_ids = frozenset(found_ids)
3420
# Double query here: should be able to avoid this by changing the
3421
# graph api further.
3422
result_set = found_ids - frozenset(
3423
self.target.get_parent_map(found_ids))
3425
source_ids = self.source.all_revision_ids()
3426
# source_ids is the worst possible case we may need to pull.
3427
# now we want to filter source_ids against what we actually
3428
# have in target, but don't try to check for existence where we know
3429
# we do not have a revision as that would be pointless.
3430
target_ids = set(self.target.all_revision_ids())
3431
result_set = set(source_ids).difference(target_ids)
3432
return self.source.revision_ids_to_search_result(result_set)
3435
class InterDifferingSerializer(InterKnitRepo):
3712
3438
def _get_repo_format_to_test(self):
3716
3442
def is_compatible(source, target):
3717
3443
"""Be compatible with Knit2 source and Knit3 target"""
3718
# This is redundant with format.check_conversion_target(), however that
3719
# raises an exception, and we just want to say "False" as in we won't
3720
# support converting between these formats.
3721
if 'IDS_never' in debug.debug_flags:
3723
if source.supports_rich_root() and not target.supports_rich_root():
3725
if (source._format.supports_tree_reference
3726
and not target._format.supports_tree_reference):
3728
if target._fallback_repositories and target._format.supports_chks:
3729
# IDS doesn't know how to copy CHKs for the parent inventories it
3730
# adds to stacked repos.
3732
if 'IDS_always' in debug.debug_flags:
3734
# Only use this code path for local source and target. IDS does far
3735
# too much IO (both bandwidth and roundtrips) over a network.
3736
if not source.bzrdir.transport.base.startswith('file:///'):
3738
if not target.bzrdir.transport.base.startswith('file:///'):
3444
if source.supports_rich_root() != target.supports_rich_root():
3446
# Ideally, we'd support fetching if the source had no tree references
3447
# even if it supported them...
3448
if (getattr(source, '_format.supports_tree_reference', False) and
3449
not getattr(target, '_format.supports_tree_reference', False)):
3742
def _get_trees(self, revision_ids, cache):
3744
for rev_id in revision_ids:
3746
possible_trees.append((rev_id, cache[rev_id]))
3748
# Not cached, but inventory might be present anyway.
3750
tree = self.source.revision_tree(rev_id)
3751
except errors.NoSuchRevision:
3752
# Nope, parent is ghost.
3755
cache[rev_id] = tree
3756
possible_trees.append((rev_id, tree))
3757
return possible_trees
3759
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3453
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3760
3454
"""Get the best delta and base for this revision.
3762
3456
:return: (basis_id, delta)
3458
possible_trees = [(parent_id, cache[parent_id])
3459
for parent_id in parent_ids
3460
if parent_id in cache]
3461
if len(possible_trees) == 0:
3462
# There either aren't any parents, or the parents aren't in the
3463
# cache, so just use the last converted tree
3464
possible_trees.append((basis_id, cache[basis_id]))
3765
# Generate deltas against each tree, to find the shortest.
3766
texts_possibly_new_in_tree = set()
3767
3466
for basis_id, basis_tree in possible_trees:
3768
3467
delta = tree.inventory._make_delta(basis_tree.inventory)
3769
for old_path, new_path, file_id, new_entry in delta:
3770
if new_path is None:
3771
# This file_id isn't present in the new rev, so we don't
3775
# Rich roots are handled elsewhere...
3777
kind = new_entry.kind
3778
if kind != 'directory' and kind != 'file':
3779
# No text record associated with this inventory entry.
3781
# This is a directory or file that has changed somehow.
3782
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3783
3468
deltas.append((len(delta), basis_id, delta))
3785
3470
return deltas[0][1:]
3787
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3788
"""Find all parent revisions that are absent, but for which the
3789
inventory is present, and copy those inventories.
3791
This is necessary to preserve correctness when the source is stacked
3792
without fallbacks configured. (Note that in cases like upgrade the
3793
source may be not have _fallback_repositories even though it is
3797
for parents in parent_map.values():
3798
parent_revs.update(parents)
3799
present_parents = self.source.get_parent_map(parent_revs)
3800
absent_parents = set(parent_revs).difference(present_parents)
3801
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3802
(rev_id,) for rev_id in absent_parents)
3803
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3804
for parent_tree in self.source.revision_trees(parent_inv_ids):
3805
current_revision_id = parent_tree.get_revision_id()
3806
parents_parents_keys = parent_invs_keys_for_stacking[
3807
(current_revision_id,)]
3808
parents_parents = [key[-1] for key in parents_parents_keys]
3809
basis_id = _mod_revision.NULL_REVISION
3810
basis_tree = self.source.revision_tree(basis_id)
3811
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3812
self.target.add_inventory_by_delta(
3813
basis_id, delta, current_revision_id, parents_parents)
3814
cache[current_revision_id] = parent_tree
3816
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3472
def _fetch_batch(self, revision_ids, basis_id, cache):
3817
3473
"""Fetch across a few revisions.
3819
3475
:param revision_ids: The revisions to copy
3820
3476
:param basis_id: The revision_id of a tree that must be in cache, used
3821
3477
as a basis for delta when no other base is available
3822
3478
:param cache: A cache of RevisionTrees that we can use.
3823
:param a_graph: A Graph object to determine the heads() of the
3824
rich-root data stream.
3825
3479
:return: The revision_id of the last converted tree. The RevisionTree
3826
3480
for it will be in cache
3828
3482
# Walk though all revisions; get inventory deltas, copy referenced
3829
3483
# texts that delta references, insert the delta, revision and
3831
root_keys_to_create = set()
3832
3485
text_keys = set()
3833
3486
pending_deltas = []
3834
3487
pending_revisions = []
3835
3488
parent_map = self.source.get_parent_map(revision_ids)
3836
self._fetch_parent_invs_for_stacking(parent_map, cache)
3837
self.source._safe_to_return_from_cache = True
3838
3489
for tree in self.source.revision_trees(revision_ids):
3839
# Find a inventory delta for this revision.
3840
# Find text entries that need to be copied, too.
3841
3490
current_revision_id = tree.get_revision_id()
3842
3491
parent_ids = parent_map.get(current_revision_id, ())
3843
parent_trees = self._get_trees(parent_ids, cache)
3844
possible_trees = list(parent_trees)
3845
if len(possible_trees) == 0:
3846
# There either aren't any parents, or the parents are ghosts,
3847
# so just use the last converted tree.
3848
possible_trees.append((basis_id, cache[basis_id]))
3849
3492
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3494
# Find text entries that need to be copied
3495
for old_path, new_path, file_id, entry in delta:
3496
if new_path is not None:
3497
if not (new_path or self.target.supports_rich_root()):
3498
# We don't copy the text for the root node unless the
3499
# target supports_rich_root.
3501
text_keys.add((file_id, entry.revision))
3851
3502
revision = self.source.get_revision(current_revision_id)
3852
3503
pending_deltas.append((basis_id, delta,
3853
3504
current_revision_id, revision.parent_ids))
3854
if self._converting_to_rich_root:
3855
self._revision_id_to_root_id[current_revision_id] = \
3857
# Determine which texts are in present in this revision but not in
3858
# any of the available parents.
3859
texts_possibly_new_in_tree = set()
3860
for old_path, new_path, file_id, entry in delta:
3861
if new_path is None:
3862
# This file_id isn't present in the new rev
3866
if not self.target.supports_rich_root():
3867
# The target doesn't support rich root, so we don't
3870
if self._converting_to_rich_root:
3871
# This can't be copied normally, we have to insert
3873
root_keys_to_create.add((file_id, entry.revision))
3876
texts_possibly_new_in_tree.add((file_id, entry.revision))
3877
for basis_id, basis_tree in possible_trees:
3878
basis_inv = basis_tree.inventory
3879
for file_key in list(texts_possibly_new_in_tree):
3880
file_id, file_revision = file_key
3882
entry = basis_inv[file_id]
3883
except errors.NoSuchId:
3885
if entry.revision == file_revision:
3886
texts_possibly_new_in_tree.remove(file_key)
3887
text_keys.update(texts_possibly_new_in_tree)
3888
3505
pending_revisions.append(revision)
3889
3506
cache[current_revision_id] = tree
3890
3507
basis_id = current_revision_id
3891
self.source._safe_to_return_from_cache = False
3892
3508
# Copy file texts
3893
3509
from_texts = self.source.texts
3894
3510
to_texts = self.target.texts
3895
if root_keys_to_create:
3896
root_stream = _mod_fetch._new_root_data_stream(
3897
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3898
self.source, graph=a_graph)
3899
to_texts.insert_record_stream(root_stream)
3900
3511
to_texts.insert_record_stream(from_texts.get_record_stream(
3901
3512
text_keys, self.target._format._fetch_order,
3902
3513
not self.target._format._fetch_uses_deltas))
3903
# insert inventory deltas
3904
3515
for delta in pending_deltas:
3905
3516
self.target.add_inventory_by_delta(*delta)
3906
if self.target._fallback_repositories:
3907
# Make sure this stacked repository has all the parent inventories
3908
# for the new revisions that we are about to insert. We do this
3909
# before adding the revisions so that no revision is added until
3910
# all the inventories it may depend on are added.
3911
# Note that this is overzealous, as we may have fetched these in an
3914
revision_ids = set()
3915
for revision in pending_revisions:
3916
revision_ids.add(revision.revision_id)
3917
parent_ids.update(revision.parent_ids)
3918
parent_ids.difference_update(revision_ids)
3919
parent_ids.discard(_mod_revision.NULL_REVISION)
3920
parent_map = self.source.get_parent_map(parent_ids)
3921
# we iterate over parent_map and not parent_ids because we don't
3922
# want to try copying any revision which is a ghost
3923
for parent_tree in self.source.revision_trees(parent_map):
3924
current_revision_id = parent_tree.get_revision_id()
3925
parents_parents = parent_map[current_revision_id]
3926
possible_trees = self._get_trees(parents_parents, cache)
3927
if len(possible_trees) == 0:
3928
# There either aren't any parents, or the parents are
3929
# ghosts, so just use the last converted tree.
3930
possible_trees.append((basis_id, cache[basis_id]))
3931
basis_id, delta = self._get_delta_for_revision(parent_tree,
3932
parents_parents, possible_trees)
3933
self.target.add_inventory_by_delta(
3934
basis_id, delta, current_revision_id, parents_parents)
3935
3517
# insert signatures and revisions
3936
3518
for revision in pending_revisions:
4350
3870
# missing keys can handle suspending a write group).
4351
3871
write_group_tokens = self.target_repo.suspend_write_group()
4352
3872
return write_group_tokens, missing_keys
4353
hint = self.target_repo.commit_write_group()
4354
if (to_serializer != src_serializer and
4355
self.target_repo._format.pack_compresses):
4356
self.target_repo.pack(hint=hint)
3873
self.target_repo.commit_write_group()
4357
3874
return [], set()
4359
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4360
target_rich_root = self.target_repo._format.rich_root_data
4361
target_tree_refs = self.target_repo._format.supports_tree_reference
4362
for record in substream:
4363
# Insert the delta directly
4364
inventory_delta_bytes = record.get_bytes_as('fulltext')
4365
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4367
parse_result = deserialiser.parse_text_bytes(
4368
inventory_delta_bytes)
4369
except inventory_delta.IncompatibleInventoryDelta, err:
4370
trace.mutter("Incompatible delta: %s", err.msg)
4371
raise errors.IncompatibleRevision(self.target_repo._format)
4372
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4373
revision_id = new_id
4374
parents = [key[0] for key in record.parents]
4375
self.target_repo.add_inventory_by_delta(
4376
basis_id, inv_delta, revision_id, parents)
4378
def _extract_and_insert_inventories(self, substream, serializer,
3876
def _extract_and_insert_inventories(self, substream, serializer):
4380
3877
"""Generate a new inventory versionedfile in target, converting data.
4382
3879
The inventory is retrieved from the source, (deserializing it), and
4383
3880
stored in the target (reserializing it in a different format).
4385
target_rich_root = self.target_repo._format.rich_root_data
4386
target_tree_refs = self.target_repo._format.supports_tree_reference
4387
3882
for record in substream:
4388
# It's not a delta, so it must be a fulltext in the source
4389
# serializer's format.
4390
3883
bytes = record.get_bytes_as('fulltext')
4391
3884
revision_id = record.key[0]
4392
3885
inv = serializer.read_inventory_from_string(bytes, revision_id)
4393
3886
parents = [key[0] for key in record.parents]
4394
3887
self.target_repo.add_inventory(revision_id, inv, parents)
4395
# No need to keep holding this full inv in memory when the rest of
4396
# the substream is likely to be all deltas.
4399
3889
def _extract_and_insert_revisions(self, substream, serializer):
4400
3890
for record in substream:
4563
4038
return (not self.from_repository._format.rich_root_data and
4564
4039
self.to_format.rich_root_data)
4566
def _get_inventory_stream(self, revision_ids, missing=False):
4567
from_format = self.from_repository._format
4568
if (from_format.supports_chks and self.to_format.supports_chks and
4569
from_format.network_name() == self.to_format.network_name()):
4570
raise AssertionError(
4571
"this case should be handled by GroupCHKStreamSource")
4572
elif 'forceinvdeltas' in debug.debug_flags:
4573
return self._get_convertable_inventory_stream(revision_ids,
4574
delta_versus_null=missing)
4575
elif from_format.network_name() == self.to_format.network_name():
4577
return self._get_simple_inventory_stream(revision_ids,
4579
elif (not from_format.supports_chks and not self.to_format.supports_chks
4580
and from_format._serializer == self.to_format._serializer):
4581
# Essentially the same format.
4582
return self._get_simple_inventory_stream(revision_ids,
4585
# Any time we switch serializations, we want to use an
4586
# inventory-delta based approach.
4587
return self._get_convertable_inventory_stream(revision_ids,
4588
delta_versus_null=missing)
4590
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4591
# NB: This currently reopens the inventory weave in source;
4592
# using a single stream interface instead would avoid this.
4593
from_weave = self.from_repository.inventories
4595
delta_closure = True
4597
delta_closure = not self.delta_on_metadata()
4598
yield ('inventories', from_weave.get_record_stream(
4599
[(rev_id,) for rev_id in revision_ids],
4600
self.inventory_fetch_order(), delta_closure))
4602
def _get_convertable_inventory_stream(self, revision_ids,
4603
delta_versus_null=False):
4604
# The two formats are sufficiently different that there is no fast
4605
# path, so we need to send just inventorydeltas, which any
4606
# sufficiently modern client can insert into any repository.
4607
# The StreamSink code expects to be able to
4608
# convert on the target, so we need to put bytes-on-the-wire that can
4609
# be converted. That means inventory deltas (if the remote is <1.19,
4610
# RemoteStreamSink will fallback to VFS to insert the deltas).
4611
yield ('inventory-deltas',
4612
self._stream_invs_as_deltas(revision_ids,
4613
delta_versus_null=delta_versus_null))
4615
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4616
"""Return a stream of inventory-deltas for the given rev ids.
4618
:param revision_ids: The list of inventories to transmit
4619
:param delta_versus_null: Don't try to find a minimal delta for this
4620
entry, instead compute the delta versus the NULL_REVISION. This
4621
effectively streams a complete inventory. Used for stuff like
4622
filling in missing parents, etc.
4624
from_repo = self.from_repository
4625
revision_keys = [(rev_id,) for rev_id in revision_ids]
4626
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4627
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4629
inventories = self.from_repository.iter_inventories(
4630
revision_ids, 'topological')
4631
format = from_repo._format
4632
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4633
inventory_cache = lru_cache.LRUCache(50)
4634
null_inventory = from_repo.revision_tree(
4635
_mod_revision.NULL_REVISION).inventory
4636
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4637
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4638
# repo back into a non-rich-root repo ought to be allowed)
4639
serializer = inventory_delta.InventoryDeltaSerializer(
4640
versioned_root=format.rich_root_data,
4641
tree_references=format.supports_tree_reference)
4642
for inv in inventories:
4643
key = (inv.revision_id,)
4644
parent_keys = parent_map.get(key, ())
4646
if not delta_versus_null and parent_keys:
4647
# The caller did not ask for complete inventories and we have
4648
# some parents that we can delta against. Make a delta against
4649
# each parent so that we can find the smallest.
4650
parent_ids = [parent_key[0] for parent_key in parent_keys]
4651
for parent_id in parent_ids:
4652
if parent_id not in invs_sent_so_far:
4653
# We don't know that the remote side has this basis, so
4656
if parent_id == _mod_revision.NULL_REVISION:
4657
parent_inv = null_inventory
4659
parent_inv = inventory_cache.get(parent_id, None)
4660
if parent_inv is None:
4661
parent_inv = from_repo.get_inventory(parent_id)
4662
candidate_delta = inv._make_delta(parent_inv)
4663
if (delta is None or
4664
len(delta) > len(candidate_delta)):
4665
delta = candidate_delta
4666
basis_id = parent_id
4668
# Either none of the parents ended up being suitable, or we
4669
# were asked to delta against NULL
4670
basis_id = _mod_revision.NULL_REVISION
4671
delta = inv._make_delta(null_inventory)
4672
invs_sent_so_far.add(inv.revision_id)
4673
inventory_cache[inv.revision_id] = inv
4674
delta_serialized = ''.join(
4675
serializer.delta_to_lines(basis_id, key[-1], delta))
4676
yield versionedfile.FulltextContentFactory(
4677
key, parent_keys, None, delta_serialized)
4680
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4681
stop_revision=None):
4682
"""Extend the partial history to include a given index
4684
If a stop_index is supplied, stop when that index has been reached.
4685
If a stop_revision is supplied, stop when that revision is
4686
encountered. Otherwise, stop when the beginning of history is
4689
:param stop_index: The index which should be present. When it is
4690
present, history extension will stop.
4691
:param stop_revision: The revision id which should be present. When
4692
it is encountered, history extension will stop.
4694
start_revision = partial_history_cache[-1]
4695
iterator = repo.iter_reverse_revision_history(start_revision)
4697
#skip the last revision in the list
4700
if (stop_index is not None and
4701
len(partial_history_cache) > stop_index):
4703
if partial_history_cache[-1] == stop_revision:
4705
revision_id = iterator.next()
4706
partial_history_cache.append(revision_id)
4707
except StopIteration:
added
removed
bzrlib/repository.py
