1196
1150
# The old API returned a list, should this actually be a set?
1197
1151
return parent_map.keys()
1199
def _check_inventories(self, checker):
1200
"""Check the inventories found from the revision scan.
1202
This is responsible for verifying the sha1 of inventories and
1203
creating a pending_keys set that covers data referenced by inventories.
1205
bar = ui.ui_factory.nested_progress_bar()
1207
self._do_check_inventories(checker, bar)
1211
def _do_check_inventories(self, checker, bar):
1212
"""Helper for _check_inventories."""
1214
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1215
kinds = ['chk_bytes', 'texts']
1216
count = len(checker.pending_keys)
1217
bar.update("inventories", 0, 2)
1218
current_keys = checker.pending_keys
1219
checker.pending_keys = {}
1220
# Accumulate current checks.
1221
for key in current_keys:
1222
if key[0] != 'inventories' and key[0] not in kinds:
1223
checker._report_items.append('unknown key type %r' % (key,))
1224
keys[key[0]].add(key[1:])
1225
if keys['inventories']:
1226
# NB: output order *should* be roughly sorted - topo or
1227
# inverse topo depending on repository - either way decent
1228
# to just delta against. However, pre-CHK formats didn't
1229
# try to optimise inventory layout on disk. As such the
1230
# pre-CHK code path does not use inventory deltas.
1232
for record in self.inventories.check(keys=keys['inventories']):
1233
if record.storage_kind == 'absent':
1234
checker._report_items.append(
1235
'Missing inventory {%s}' % (record.key,))
1237
last_object = self._check_record('inventories', record,
1238
checker, last_object,
1239
current_keys[('inventories',) + record.key])
1240
del keys['inventories']
1243
bar.update("texts", 1)
1244
while (checker.pending_keys or keys['chk_bytes']
1246
# Something to check.
1247
current_keys = checker.pending_keys
1248
checker.pending_keys = {}
1249
# Accumulate current checks.
1250
for key in current_keys:
1251
if key[0] not in kinds:
1252
checker._report_items.append('unknown key type %r' % (key,))
1253
keys[key[0]].add(key[1:])
1254
# Check the outermost kind only - inventories || chk_bytes || texts
1258
for record in getattr(self, kind).check(keys=keys[kind]):
1259
if record.storage_kind == 'absent':
1260
checker._report_items.append(
1261
'Missing %s {%s}' % (kind, record.key,))
1263
last_object = self._check_record(kind, record,
1264
checker, last_object, current_keys[(kind,) + record.key])
1268
def _check_record(self, kind, record, checker, last_object, item_data):
1269
"""Check a single text from this repository."""
1270
if kind == 'inventories':
1271
rev_id = record.key[0]
1272
inv = self._deserialise_inventory(rev_id,
1273
record.get_bytes_as('fulltext'))
1274
if last_object is not None:
1275
delta = inv._make_delta(last_object)
1276
for old_path, path, file_id, ie in delta:
1279
ie.check(checker, rev_id, inv)
1281
for path, ie in inv.iter_entries():
1282
ie.check(checker, rev_id, inv)
1283
if self._format.fast_deltas:
1285
elif kind == 'chk_bytes':
1286
# No code written to check chk_bytes for this repo format.
1287
checker._report_items.append(
1288
'unsupported key type chk_bytes for %s' % (record.key,))
1289
elif kind == 'texts':
1290
self._check_text(record, checker, item_data)
1292
checker._report_items.append(
1293
'unknown key type %s for %s' % (kind, record.key))
1295
def _check_text(self, record, checker, item_data):
1296
"""Check a single text."""
1297
# Check it is extractable.
1298
# TODO: check length.
1299
if record.storage_kind == 'chunked':
1300
chunks = record.get_bytes_as(record.storage_kind)
1301
sha1 = osutils.sha_strings(chunks)
1302
length = sum(map(len, chunks))
1304
content = record.get_bytes_as('fulltext')
1305
sha1 = osutils.sha_string(content)
1306
length = len(content)
1307
if item_data and sha1 != item_data[1]:
1308
checker._report_items.append(
1309
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1310
(record.key, sha1, item_data[1], item_data[2]))
1313
1154
def create(a_bzrdir):
1314
1155
"""Construct the current default format repository in a_bzrdir."""
1895
1670
@needs_read_lock
1896
1671
def get_revisions(self, revision_ids):
1897
"""Get many revisions at once.
1899
Repositories that need to check data on every revision read should
1900
subclass this method.
1672
"""Get many revisions at once."""
1902
1673
return self._get_revisions(revision_ids)
1904
1675
@needs_read_lock
1905
1676
def _get_revisions(self, revision_ids):
1906
1677
"""Core work logic to get many revisions without sanity checks."""
1678
for rev_id in revision_ids:
1679
if not rev_id or not isinstance(rev_id, basestring):
1680
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1681
keys = [(key,) for key in revision_ids]
1682
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1908
for revid, rev in self._iter_revisions(revision_ids):
1910
raise errors.NoSuchRevision(self, revid)
1684
for record in stream:
1685
if record.storage_kind == 'absent':
1686
raise errors.NoSuchRevision(self, record.key[0])
1687
text = record.get_bytes_as('fulltext')
1688
rev = self._serializer.read_revision_from_string(text)
1689
revs[record.key[0]] = rev
1912
1690
return [revs[revid] for revid in revision_ids]
1914
def _iter_revisions(self, revision_ids):
1915
"""Iterate over revision objects.
1917
:param revision_ids: An iterable of revisions to examine. None may be
1918
passed to request all revisions known to the repository. Note that
1919
not all repositories can find unreferenced revisions; for those
1920
repositories only referenced ones will be returned.
1921
:return: An iterator of (revid, revision) tuples. Absent revisions (
1922
those asked for but not available) are returned as (revid, None).
1924
if revision_ids is None:
1925
revision_ids = self.all_revision_ids()
1927
for rev_id in revision_ids:
1928
if not rev_id or not isinstance(rev_id, basestring):
1929
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1930
keys = [(key,) for key in revision_ids]
1931
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1932
for record in stream:
1933
revid = record.key[0]
1934
if record.storage_kind == 'absent':
1937
text = record.get_bytes_as('fulltext')
1938
rev = self._serializer.read_revision_from_string(text)
1693
def get_revision_xml(self, revision_id):
1694
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1695
# would have already do it.
1696
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1697
# TODO: this can't just be replaced by:
1698
# return self._serializer.write_revision_to_string(
1699
# self.get_revision(revision_id))
1700
# as cStringIO preservers the encoding unlike write_revision_to_string
1701
# or some other call down the path.
1702
rev = self.get_revision(revision_id)
1703
rev_tmp = cStringIO.StringIO()
1704
# the current serializer..
1705
self._serializer.write_revision(rev, rev_tmp)
1707
return rev_tmp.getvalue()
1941
1709
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1942
1710
"""Produce a generator of revision deltas.
2392
2142
:param revision_ids: The expected revision ids of the inventories.
2393
:param ordering: optional ordering, e.g. 'topological'. If not
2394
specified, the order of revision_ids will be preserved (by
2395
buffering if necessary).
2396
2143
:return: An iterator of inventories.
2398
2145
if ((None in revision_ids)
2399
2146
or (_mod_revision.NULL_REVISION in revision_ids)):
2400
2147
raise ValueError('cannot get null revision inventory')
2401
return self._iter_inventories(revision_ids, ordering)
2148
return self._iter_inventories(revision_ids)
2403
def _iter_inventories(self, revision_ids, ordering):
2150
def _iter_inventories(self, revision_ids):
2404
2151
"""single-document based inventory iteration."""
2405
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2406
for text, revision_id in inv_xmls:
2407
yield self._deserialise_inventory(revision_id, text)
2152
for text, revision_id in self._iter_inventory_xmls(revision_ids):
2153
yield self.deserialise_inventory(revision_id, text)
2409
def _iter_inventory_xmls(self, revision_ids, ordering):
2410
if ordering is None:
2411
order_as_requested = True
2412
ordering = 'unordered'
2414
order_as_requested = False
2155
def _iter_inventory_xmls(self, revision_ids):
2415
2156
keys = [(revision_id,) for revision_id in revision_ids]
2418
if order_as_requested:
2419
key_iter = iter(keys)
2420
next_key = key_iter.next()
2421
stream = self.inventories.get_record_stream(keys, ordering, True)
2157
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2422
2158
text_chunks = {}
2423
2159
for record in stream:
2424
2160
if record.storage_kind != 'absent':
2425
chunks = record.get_bytes_as('chunked')
2426
if order_as_requested:
2427
text_chunks[record.key] = chunks
2429
yield ''.join(chunks), record.key[-1]
2161
text_chunks[record.key] = record.get_bytes_as('chunked')
2431
2163
raise errors.NoSuchRevision(self, record.key)
2432
if order_as_requested:
2433
# Yield as many results as we can while preserving order.
2434
while next_key in text_chunks:
2435
chunks = text_chunks.pop(next_key)
2436
yield ''.join(chunks), next_key[-1]
2438
next_key = key_iter.next()
2439
except StopIteration:
2440
# We still want to fully consume the get_record_stream,
2441
# just in case it is not actually finished at this point
2165
chunks = text_chunks.pop(key)
2166
yield ''.join(chunks), key[-1]
2445
def _deserialise_inventory(self, revision_id, xml):
2168
def deserialise_inventory(self, revision_id, xml):
2446
2169
"""Transform the xml into an inventory object.
2448
2171
:param revision_id: The expected revision id of the inventory.
2449
2172
:param xml: A serialised inventory.
2451
2174
result = self._serializer.read_inventory_from_string(xml, revision_id,
2452
entry_cache=self._inventory_entry_cache,
2453
return_from_cache=self._safe_to_return_from_cache)
2175
entry_cache=self._inventory_entry_cache)
2454
2176
if result.revision_id != revision_id:
2455
2177
raise AssertionError('revision id mismatch %s != %s' % (
2456
2178
result.revision_id, revision_id))
2181
def serialise_inventory(self, inv):
2182
return self._serializer.write_inventory_to_string(inv)
2184
def _serialise_inventory_to_lines(self, inv):
2185
return self._serializer.write_inventory_to_lines(inv)
2459
2187
def get_serializer_format(self):
2460
2188
return self._serializer.format_num
2462
2190
@needs_read_lock
2463
def _get_inventory_xml(self, revision_id):
2464
"""Get serialized inventory as a string."""
2465
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2191
def get_inventory_xml(self, revision_id):
2192
"""Get inventory XML as a file object."""
2193
texts = self._iter_inventory_xmls([revision_id])
2467
2195
text, revision_id = texts.next()
2468
2196
except StopIteration:
2469
2197
raise errors.HistoryMissing(self, 'inventory', revision_id)
2472
def get_rev_id_for_revno(self, revno, known_pair):
2473
"""Return the revision id of a revno, given a later (revno, revid)
2474
pair in the same history.
2476
:return: if found (True, revid). If the available history ran out
2477
before reaching the revno, then this returns
2478
(False, (closest_revno, closest_revid)).
2201
def get_inventory_sha1(self, revision_id):
2202
"""Return the sha1 hash of the inventory entry
2480
known_revno, known_revid = known_pair
2481
partial_history = [known_revid]
2482
distance_from_known = known_revno - revno
2483
if distance_from_known < 0:
2485
'requested revno (%d) is later than given known revno (%d)'
2486
% (revno, known_revno))
2489
self, partial_history, stop_index=distance_from_known)
2490
except errors.RevisionNotPresent, err:
2491
if err.revision_id == known_revid:
2492
# The start revision (known_revid) wasn't found.
2494
# This is a stacked repository with no fallbacks, or a there's a
2495
# left-hand ghost. Either way, even though the revision named in
2496
# the error isn't in this repo, we know it's the next step in this
2497
# left-hand history.
2498
partial_history.append(err.revision_id)
2499
if len(partial_history) <= distance_from_known:
2500
# Didn't find enough history to get a revid for the revno.
2501
earliest_revno = known_revno - len(partial_history) + 1
2502
return (False, (earliest_revno, partial_history[-1]))
2503
if len(partial_history) - 1 > distance_from_known:
2504
raise AssertionError('_iter_for_revno returned too much history')
2505
return (True, partial_history[-1])
2204
return self.get_revision(revision_id).inventory_sha1
2507
2206
def iter_reverse_revision_history(self, revision_id):
2508
2207
"""Iterate backwards through revision ids in the lefthand history
3741
3377
return self.source.revision_ids_to_search_result(result_set)
3380
class InterPackRepo(InterSameDataRepository):
3381
"""Optimised code paths between Pack based repositories."""
3384
def _get_repo_format_to_test(self):
3385
from bzrlib.repofmt import pack_repo
3386
return pack_repo.RepositoryFormatKnitPack6RichRoot()
3389
def is_compatible(source, target):
3390
"""Be compatible with known Pack formats.
3392
We don't test for the stores being of specific types because that
3393
could lead to confusing results, and there is no need to be
3396
InterPackRepo does not support CHK based repositories.
3398
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
3399
from bzrlib.repofmt.groupcompress_repo import RepositoryFormatCHK1
3401
are_packs = (isinstance(source._format, RepositoryFormatPack) and
3402
isinstance(target._format, RepositoryFormatPack))
3403
not_packs = (isinstance(source._format, RepositoryFormatCHK1) or
3404
isinstance(target._format, RepositoryFormatCHK1))
3405
except AttributeError:
3407
if not_packs or not are_packs:
3409
return InterRepository._same_model(source, target)
3412
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
3414
"""See InterRepository.fetch()."""
3415
if (len(self.source._fallback_repositories) > 0 or
3416
len(self.target._fallback_repositories) > 0):
3417
# The pack layer is not aware of fallback repositories, so when
3418
# fetching from a stacked repository or into a stacked repository
3419
# we use the generic fetch logic which uses the VersionedFiles
3420
# attributes on repository.
3421
from bzrlib.fetch import RepoFetcher
3422
fetcher = RepoFetcher(self.target, self.source, revision_id,
3423
pb, find_ghosts, fetch_spec=fetch_spec)
3424
if fetch_spec is not None:
3425
if len(list(fetch_spec.heads)) != 1:
3426
raise AssertionError(
3427
"InterPackRepo.fetch doesn't support "
3428
"fetching multiple heads yet.")
3429
revision_id = list(fetch_spec.heads)[0]
3431
if revision_id is None:
3433
# everything to do - use pack logic
3434
# to fetch from all packs to one without
3435
# inventory parsing etc, IFF nothing to be copied is in the target.
3437
source_revision_ids = frozenset(self.source.all_revision_ids())
3438
revision_ids = source_revision_ids - \
3439
frozenset(self.target.get_parent_map(source_revision_ids))
3440
revision_keys = [(revid,) for revid in revision_ids]
3441
index = self.target._pack_collection.revision_index.combined_index
3442
present_revision_ids = set(item[1][0] for item in
3443
index.iter_entries(revision_keys))
3444
revision_ids = set(revision_ids) - present_revision_ids
3445
# implementing the TODO will involve:
3446
# - detecting when all of a pack is selected
3447
# - avoiding as much as possible pre-selection, so the
3448
# more-core routines such as create_pack_from_packs can filter in
3449
# a just-in-time fashion. (though having a HEADS list on a
3450
# repository might make this a lot easier, because we could
3451
# sensibly detect 'new revisions' without doing a full index scan.
3452
elif _mod_revision.is_null(revision_id):
3456
revision_ids = self.search_missing_revision_ids(revision_id,
3457
find_ghosts=find_ghosts).get_keys()
3458
if len(revision_ids) == 0:
3460
return self._pack(self.source, self.target, revision_ids)
3462
def _pack(self, source, target, revision_ids):
3463
from bzrlib.repofmt.pack_repo import Packer
3464
packs = source._pack_collection.all_packs()
3465
pack = Packer(self.target._pack_collection, packs, '.fetch',
3466
revision_ids).pack()
3467
if pack is not None:
3468
self.target._pack_collection._save_pack_names()
3469
copied_revs = pack.get_revision_count()
3470
# Trigger an autopack. This may duplicate effort as we've just done
3471
# a pack creation, but for now it is simpler to think about as
3472
# 'upload data, then repack if needed'.
3473
self.target._pack_collection.autopack()
3474
return (copied_revs, [])
3479
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
3480
"""See InterRepository.missing_revision_ids().
3482
:param find_ghosts: Find ghosts throughout the ancestry of
3485
if not find_ghosts and revision_id is not None:
3486
return self._walk_to_common_revisions([revision_id])
3487
elif revision_id is not None:
3488
# Find ghosts: search for revisions pointing from one repository to
3489
# the other, and vice versa, anywhere in the history of revision_id.
3490
graph = self.target.get_graph(other_repository=self.source)
3491
searcher = graph._make_breadth_first_searcher([revision_id])
3495
next_revs, ghosts = searcher.next_with_ghosts()
3496
except StopIteration:
3498
if revision_id in ghosts:
3499
raise errors.NoSuchRevision(self.source, revision_id)
3500
found_ids.update(next_revs)
3501
found_ids.update(ghosts)
3502
found_ids = frozenset(found_ids)
3503
# Double query here: should be able to avoid this by changing the
3504
# graph api further.
3505
result_set = found_ids - frozenset(
3506
self.target.get_parent_map(found_ids))
3508
source_ids = self.source.all_revision_ids()
3509
# source_ids is the worst possible case we may need to pull.
3510
# now we want to filter source_ids against what we actually
3511
# have in target, but don't try to check for existence where we know
3512
# we do not have a revision as that would be pointless.
3513
target_ids = set(self.target.all_revision_ids())
3514
result_set = set(source_ids).difference(target_ids)
3515
return self.source.revision_ids_to_search_result(result_set)
3744
3518
class InterDifferingSerializer(InterRepository):
3753
3527
# This is redundant with format.check_conversion_target(), however that
3754
3528
# raises an exception, and we just want to say "False" as in we won't
3755
3529
# support converting between these formats.
3756
if 'IDS_never' in debug.debug_flags:
3758
3530
if source.supports_rich_root() and not target.supports_rich_root():
3760
3532
if (source._format.supports_tree_reference
3761
3533
and not target._format.supports_tree_reference):
3763
if target._fallback_repositories and target._format.supports_chks:
3764
# IDS doesn't know how to copy CHKs for the parent inventories it
3765
# adds to stacked repos.
3767
if 'IDS_always' in debug.debug_flags:
3769
# Only use this code path for local source and target. IDS does far
3770
# too much IO (both bandwidth and roundtrips) over a network.
3771
if not source.bzrdir.transport.base.startswith('file:///'):
3773
if not target.bzrdir.transport.base.startswith('file:///'):
3777
def _get_trees(self, revision_ids, cache):
3779
for rev_id in revision_ids:
3781
possible_trees.append((rev_id, cache[rev_id]))
3783
# Not cached, but inventory might be present anyway.
3785
tree = self.source.revision_tree(rev_id)
3786
except errors.NoSuchRevision:
3787
# Nope, parent is ghost.
3790
cache[rev_id] = tree
3791
possible_trees.append((rev_id, tree))
3792
return possible_trees
3794
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3537
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3795
3538
"""Get the best delta and base for this revision.
3797
3540
:return: (basis_id, delta)
3542
possible_trees = [(parent_id, cache[parent_id])
3543
for parent_id in parent_ids
3544
if parent_id in cache]
3545
if len(possible_trees) == 0:
3546
# There either aren't any parents, or the parents aren't in the
3547
# cache, so just use the last converted tree
3548
possible_trees.append((basis_id, cache[basis_id]))
3800
# Generate deltas against each tree, to find the shortest.
3801
texts_possibly_new_in_tree = set()
3802
3550
for basis_id, basis_tree in possible_trees:
3803
3551
delta = tree.inventory._make_delta(basis_tree.inventory)
3804
for old_path, new_path, file_id, new_entry in delta:
3805
if new_path is None:
3806
# This file_id isn't present in the new rev, so we don't
3810
# Rich roots are handled elsewhere...
3812
kind = new_entry.kind
3813
if kind != 'directory' and kind != 'file':
3814
# No text record associated with this inventory entry.
3816
# This is a directory or file that has changed somehow.
3817
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3818
3552
deltas.append((len(delta), basis_id, delta))
3820
3554
return deltas[0][1:]
3822
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3823
"""Find all parent revisions that are absent, but for which the
3824
inventory is present, and copy those inventories.
3826
This is necessary to preserve correctness when the source is stacked
3827
without fallbacks configured. (Note that in cases like upgrade the
3828
source may be not have _fallback_repositories even though it is
3832
for parents in parent_map.values():
3833
parent_revs.update(parents)
3834
present_parents = self.source.get_parent_map(parent_revs)
3835
absent_parents = set(parent_revs).difference(present_parents)
3836
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3837
(rev_id,) for rev_id in absent_parents)
3838
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3839
for parent_tree in self.source.revision_trees(parent_inv_ids):
3840
current_revision_id = parent_tree.get_revision_id()
3841
parents_parents_keys = parent_invs_keys_for_stacking[
3842
(current_revision_id,)]
3843
parents_parents = [key[-1] for key in parents_parents_keys]
3844
basis_id = _mod_revision.NULL_REVISION
3845
basis_tree = self.source.revision_tree(basis_id)
3846
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3847
self.target.add_inventory_by_delta(
3848
basis_id, delta, current_revision_id, parents_parents)
3849
cache[current_revision_id] = parent_tree
3851
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3556
def _get_parent_keys(self, root_key, parent_map):
3557
"""Get the parent keys for a given root id."""
3558
root_id, rev_id = root_key
3559
# Include direct parents of the revision, but only if they used
3562
for parent_id in parent_map[rev_id]:
3563
if parent_id == _mod_revision.NULL_REVISION:
3565
if parent_id not in self._revision_id_to_root_id:
3566
# We probably didn't read this revision, go spend the
3567
# extra effort to actually check
3569
tree = self.source.revision_tree(parent_id)
3570
except errors.NoSuchRevision:
3571
# Ghost, fill out _revision_id_to_root_id in case we
3572
# encounter this again.
3573
# But set parent_root_id to None since we don't really know
3574
parent_root_id = None
3576
parent_root_id = tree.get_root_id()
3577
self._revision_id_to_root_id[parent_id] = None
3579
parent_root_id = self._revision_id_to_root_id[parent_id]
3580
if root_id == parent_root_id or parent_root_id is None:
3581
parent_keys.append((root_id, parent_id))
3582
return tuple(parent_keys)
3584
def _new_root_data_stream(self, root_keys_to_create, parent_map):
3585
for root_key in root_keys_to_create:
3586
parent_keys = self._get_parent_keys(root_key, parent_map)
3587
yield versionedfile.FulltextContentFactory(root_key,
3588
parent_keys, None, '')
3590
def _fetch_batch(self, revision_ids, basis_id, cache):
3852
3591
"""Fetch across a few revisions.
3854
3593
:param revision_ids: The revisions to copy
3855
3594
:param basis_id: The revision_id of a tree that must be in cache, used
3856
3595
as a basis for delta when no other base is available
3857
3596
:param cache: A cache of RevisionTrees that we can use.
3858
:param a_graph: A Graph object to determine the heads() of the
3859
rich-root data stream.
3860
3597
:return: The revision_id of the last converted tree. The RevisionTree
3861
3598
for it will be in cache
3868
3605
pending_deltas = []
3869
3606
pending_revisions = []
3870
3607
parent_map = self.source.get_parent_map(revision_ids)
3871
self._fetch_parent_invs_for_stacking(parent_map, cache)
3872
self.source._safe_to_return_from_cache = True
3873
3608
for tree in self.source.revision_trees(revision_ids):
3874
# Find a inventory delta for this revision.
3875
# Find text entries that need to be copied, too.
3876
3609
current_revision_id = tree.get_revision_id()
3877
3610
parent_ids = parent_map.get(current_revision_id, ())
3878
parent_trees = self._get_trees(parent_ids, cache)
3879
possible_trees = list(parent_trees)
3880
if len(possible_trees) == 0:
3881
# There either aren't any parents, or the parents are ghosts,
3882
# so just use the last converted tree.
3883
possible_trees.append((basis_id, cache[basis_id]))
3884
3611
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3886
revision = self.source.get_revision(current_revision_id)
3887
pending_deltas.append((basis_id, delta,
3888
current_revision_id, revision.parent_ids))
3889
3613
if self._converting_to_rich_root:
3890
3614
self._revision_id_to_root_id[current_revision_id] = \
3891
3615
tree.get_root_id()
3892
# Determine which texts are in present in this revision but not in
3893
# any of the available parents.
3894
texts_possibly_new_in_tree = set()
3616
# Find text entries that need to be copied
3895
3617
for old_path, new_path, file_id, entry in delta:
3896
if new_path is None:
3897
# This file_id isn't present in the new rev
3901
if not self.target.supports_rich_root():
3902
# The target doesn't support rich root, so we don't
3905
if self._converting_to_rich_root:
3906
# This can't be copied normally, we have to insert
3908
root_keys_to_create.add((file_id, entry.revision))
3911
texts_possibly_new_in_tree.add((file_id, entry.revision))
3912
for basis_id, basis_tree in possible_trees:
3913
basis_inv = basis_tree.inventory
3914
for file_key in list(texts_possibly_new_in_tree):
3915
file_id, file_revision = file_key
3917
entry = basis_inv[file_id]
3918
except errors.NoSuchId:
3920
if entry.revision == file_revision:
3921
texts_possibly_new_in_tree.remove(file_key)
3922
text_keys.update(texts_possibly_new_in_tree)
3618
if new_path is not None:
3621
if not self.target.supports_rich_root():
3622
# The target doesn't support rich root, so we don't
3625
if self._converting_to_rich_root:
3626
# This can't be copied normally, we have to insert
3628
root_keys_to_create.add((file_id, entry.revision))
3630
text_keys.add((file_id, entry.revision))
3631
revision = self.source.get_revision(current_revision_id)
3632
pending_deltas.append((basis_id, delta,
3633
current_revision_id, revision.parent_ids))
3923
3634
pending_revisions.append(revision)
3924
3635
cache[current_revision_id] = tree
3925
3636
basis_id = current_revision_id
3926
self.source._safe_to_return_from_cache = False
3927
3637
# Copy file texts
3928
3638
from_texts = self.source.texts
3929
3639
to_texts = self.target.texts
3930
3640
if root_keys_to_create:
3931
root_stream = _mod_fetch._new_root_data_stream(
3932
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3933
self.source, graph=a_graph)
3641
root_stream = self._new_root_data_stream(root_keys_to_create,
3934
3643
to_texts.insert_record_stream(root_stream)
3935
3644
to_texts.insert_record_stream(from_texts.get_record_stream(
3936
3645
text_keys, self.target._format._fetch_order,
4385
4039
# missing keys can handle suspending a write group).
4386
4040
write_group_tokens = self.target_repo.suspend_write_group()
4387
4041
return write_group_tokens, missing_keys
4388
hint = self.target_repo.commit_write_group()
4389
if (to_serializer != src_serializer and
4390
self.target_repo._format.pack_compresses):
4391
self.target_repo.pack(hint=hint)
4042
self.target_repo.commit_write_group()
4392
4043
return [], set()
4394
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4395
target_rich_root = self.target_repo._format.rich_root_data
4396
target_tree_refs = self.target_repo._format.supports_tree_reference
4397
for record in substream:
4398
# Insert the delta directly
4399
inventory_delta_bytes = record.get_bytes_as('fulltext')
4400
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4402
parse_result = deserialiser.parse_text_bytes(
4403
inventory_delta_bytes)
4404
except inventory_delta.IncompatibleInventoryDelta, err:
4405
trace.mutter("Incompatible delta: %s", err.msg)
4406
raise errors.IncompatibleRevision(self.target_repo._format)
4407
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4408
revision_id = new_id
4409
parents = [key[0] for key in record.parents]
4410
self.target_repo.add_inventory_by_delta(
4411
basis_id, inv_delta, revision_id, parents)
4413
def _extract_and_insert_inventories(self, substream, serializer,
4045
def _extract_and_insert_inventories(self, substream, serializer):
4415
4046
"""Generate a new inventory versionedfile in target, converting data.
4417
4048
The inventory is retrieved from the source, (deserializing it), and
4418
4049
stored in the target (reserializing it in a different format).
4420
target_rich_root = self.target_repo._format.rich_root_data
4421
target_tree_refs = self.target_repo._format.supports_tree_reference
4422
4051
for record in substream:
4423
# It's not a delta, so it must be a fulltext in the source
4424
# serializer's format.
4425
4052
bytes = record.get_bytes_as('fulltext')
4426
4053
revision_id = record.key[0]
4427
4054
inv = serializer.read_inventory_from_string(bytes, revision_id)
4428
4055
parents = [key[0] for key in record.parents]
4429
4056
self.target_repo.add_inventory(revision_id, inv, parents)
4430
# No need to keep holding this full inv in memory when the rest of
4431
# the substream is likely to be all deltas.
4434
4058
def _extract_and_insert_revisions(self, substream, serializer):
4435
4059
for record in substream:
4599
4205
return (not self.from_repository._format.rich_root_data and
4600
4206
self.to_format.rich_root_data)
4602
def _get_inventory_stream(self, revision_ids, missing=False):
4208
def _get_inventory_stream(self, revision_ids):
4603
4209
from_format = self.from_repository._format
4604
if (from_format.supports_chks and self.to_format.supports_chks and
4605
from_format.network_name() == self.to_format.network_name()):
4606
raise AssertionError(
4607
"this case should be handled by GroupCHKStreamSource")
4608
elif 'forceinvdeltas' in debug.debug_flags:
4609
return self._get_convertable_inventory_stream(revision_ids,
4610
delta_versus_null=missing)
4611
elif from_format.network_name() == self.to_format.network_name():
4613
return self._get_simple_inventory_stream(revision_ids,
4615
elif (not from_format.supports_chks and not self.to_format.supports_chks
4616
and from_format._serializer == self.to_format._serializer):
4617
# Essentially the same format.
4618
return self._get_simple_inventory_stream(revision_ids,
4210
if (from_format.supports_chks and self.to_format.supports_chks
4211
and (from_format._serializer == self.to_format._serializer)):
4212
# Both sides support chks, and they use the same serializer, so it
4213
# is safe to transmit the chk pages and inventory pages across
4215
return self._get_chk_inventory_stream(revision_ids)
4216
elif (not from_format.supports_chks):
4217
# Source repository doesn't support chks. So we can transmit the
4218
# inventories 'as-is' and either they are just accepted on the
4219
# target, or the Sink will properly convert it.
4220
return self._get_simple_inventory_stream(revision_ids)
4621
# Any time we switch serializations, we want to use an
4622
# inventory-delta based approach.
4623
return self._get_convertable_inventory_stream(revision_ids,
4624
delta_versus_null=missing)
4222
# XXX: Hack to make not-chk->chk fetch: copy the inventories as
4223
# inventories. Note that this should probably be done somehow
4224
# as part of bzrlib.repository.StreamSink. Except JAM couldn't
4225
# figure out how a non-chk repository could possibly handle
4226
# deserializing an inventory stream from a chk repo, as it
4227
# doesn't have a way to understand individual pages.
4228
return self._get_convertable_inventory_stream(revision_ids)
4626
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4627
# NB: This currently reopens the inventory weave in source;
4628
# using a single stream interface instead would avoid this.
4230
def _get_simple_inventory_stream(self, revision_ids):
4629
4231
from_weave = self.from_repository.inventories
4631
delta_closure = True
4633
delta_closure = not self.delta_on_metadata()
4634
4232
yield ('inventories', from_weave.get_record_stream(
4635
4233
[(rev_id,) for rev_id in revision_ids],
4636
self.inventory_fetch_order(), delta_closure))
4638
def _get_convertable_inventory_stream(self, revision_ids,
4639
delta_versus_null=False):
4640
# The two formats are sufficiently different that there is no fast
4641
# path, so we need to send just inventorydeltas, which any
4642
# sufficiently modern client can insert into any repository.
4643
# The StreamSink code expects to be able to
4644
# convert on the target, so we need to put bytes-on-the-wire that can
4645
# be converted. That means inventory deltas (if the remote is <1.19,
4646
# RemoteStreamSink will fallback to VFS to insert the deltas).
4647
yield ('inventory-deltas',
4648
self._stream_invs_as_deltas(revision_ids,
4649
delta_versus_null=delta_versus_null))
4651
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4652
"""Return a stream of inventory-deltas for the given rev ids.
4654
:param revision_ids: The list of inventories to transmit
4655
:param delta_versus_null: Don't try to find a minimal delta for this
4656
entry, instead compute the delta versus the NULL_REVISION. This
4657
effectively streams a complete inventory. Used for stuff like
4658
filling in missing parents, etc.
4234
self.inventory_fetch_order(),
4235
not self.delta_on_metadata()))
4237
def _get_chk_inventory_stream(self, revision_ids):
4238
"""Fetch the inventory texts, along with the associated chk maps."""
4239
# We want an inventory outside of the search set, so that we can filter
4240
# out uninteresting chk pages. For now we use
4241
# _find_revision_outside_set, but if we had a Search with cut_revs, we
4242
# could use that instead.
4243
start_rev_id = self.from_repository._find_revision_outside_set(
4245
start_rev_key = (start_rev_id,)
4246
inv_keys_to_fetch = [(rev_id,) for rev_id in revision_ids]
4247
if start_rev_id != _mod_revision.NULL_REVISION:
4248
inv_keys_to_fetch.append((start_rev_id,))
4249
# Any repo that supports chk_bytes must also support out-of-order
4250
# insertion. At least, that is how we expect it to work
4251
# We use get_record_stream instead of iter_inventories because we want
4252
# to be able to insert the stream as well. We could instead fetch
4253
# allowing deltas, and then iter_inventories, but we don't know whether
4254
# source or target is more 'local' anway.
4255
inv_stream = self.from_repository.inventories.get_record_stream(
4256
inv_keys_to_fetch, 'unordered',
4257
True) # We need them as full-texts so we can find their references
4258
uninteresting_chk_roots = set()
4259
interesting_chk_roots = set()
4260
def filter_inv_stream(inv_stream):
4261
for idx, record in enumerate(inv_stream):
4262
### child_pb.update('fetch inv', idx, len(inv_keys_to_fetch))
4263
bytes = record.get_bytes_as('fulltext')
4264
chk_inv = inventory.CHKInventory.deserialise(
4265
self.from_repository.chk_bytes, bytes, record.key)
4266
if record.key == start_rev_key:
4267
uninteresting_chk_roots.add(chk_inv.id_to_entry.key())
4268
p_id_map = chk_inv.parent_id_basename_to_file_id
4269
if p_id_map is not None:
4270
uninteresting_chk_roots.add(p_id_map.key())
4273
interesting_chk_roots.add(chk_inv.id_to_entry.key())
4274
p_id_map = chk_inv.parent_id_basename_to_file_id
4275
if p_id_map is not None:
4276
interesting_chk_roots.add(p_id_map.key())
4277
### pb.update('fetch inventory', 0, 2)
4278
yield ('inventories', filter_inv_stream(inv_stream))
4279
# Now that we have worked out all of the interesting root nodes, grab
4280
# all of the interesting pages and insert them
4281
### pb.update('fetch inventory', 1, 2)
4282
interesting = chk_map.iter_interesting_nodes(
4283
self.from_repository.chk_bytes, interesting_chk_roots,
4284
uninteresting_chk_roots)
4285
def to_stream_adapter():
4286
"""Adapt the iter_interesting_nodes result to a single stream.
4288
iter_interesting_nodes returns records as it processes them, along
4289
with keys. However, we only want to return the records themselves.
4291
for record, items in interesting:
4292
if record is not None:
4294
# XXX: We could instead call get_record_stream(records.keys())
4295
# ATM, this will always insert the records as fulltexts, and
4296
# requires that you can hang on to records once you have gone
4297
# on to the next one. Further, it causes the target to
4298
# recompress the data. Testing shows it to be faster than
4299
# requesting the records again, though.
4300
yield ('chk_bytes', to_stream_adapter())
4301
### pb.update('fetch inventory', 2, 2)
4303
def _get_convertable_inventory_stream(self, revision_ids):
4304
# XXX: One of source or target is using chks, and they don't have
4305
# compatible serializations. The StreamSink code expects to be
4306
# able to convert on the target, so we need to put
4307
# bytes-on-the-wire that can be converted
4308
yield ('inventories', self._stream_invs_as_fulltexts(revision_ids))
4310
def _stream_invs_as_fulltexts(self, revision_ids):
4660
4311
from_repo = self.from_repository
4312
from_serializer = from_repo._format._serializer
4661
4313
revision_keys = [(rev_id,) for rev_id in revision_ids]
4662
4314
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4663
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4665
inventories = self.from_repository.iter_inventories(
4666
revision_ids, 'topological')
4667
format = from_repo._format
4668
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4669
inventory_cache = lru_cache.LRUCache(50)
4670
null_inventory = from_repo.revision_tree(
4671
_mod_revision.NULL_REVISION).inventory
4672
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4673
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4674
# repo back into a non-rich-root repo ought to be allowed)
4675
serializer = inventory_delta.InventoryDeltaSerializer(
4676
versioned_root=format.rich_root_data,
4677
tree_references=format.supports_tree_reference)
4678
for inv in inventories:
4315
for inv in self.from_repository.iter_inventories(revision_ids):
4316
# XXX: This is a bit hackish, but it works. Basically,
4317
# CHKSerializer 'accidentally' supports
4318
# read/write_inventory_to_string, even though that is never
4319
# the format that is stored on disk. It *does* give us a
4320
# single string representation for an inventory, so live with
4322
# This would be far better if we had a 'serialized inventory
4323
# delta' form. Then we could use 'inventory._make_delta', and
4324
# transmit that. This would both be faster to generate, and
4325
# result in fewer bytes-on-the-wire.
4326
as_bytes = from_serializer.write_inventory_to_string(inv)
4679
4327
key = (inv.revision_id,)
4680
4328
parent_keys = parent_map.get(key, ())
4682
if not delta_versus_null and parent_keys:
4683
# The caller did not ask for complete inventories and we have
4684
# some parents that we can delta against. Make a delta against
4685
# each parent so that we can find the smallest.
4686
parent_ids = [parent_key[0] for parent_key in parent_keys]
4687
for parent_id in parent_ids:
4688
if parent_id not in invs_sent_so_far:
4689
# We don't know that the remote side has this basis, so
4692
if parent_id == _mod_revision.NULL_REVISION:
4693
parent_inv = null_inventory
4695
parent_inv = inventory_cache.get(parent_id, None)
4696
if parent_inv is None:
4697
parent_inv = from_repo.get_inventory(parent_id)
4698
candidate_delta = inv._make_delta(parent_inv)
4699
if (delta is None or
4700
len(delta) > len(candidate_delta)):
4701
delta = candidate_delta
4702
basis_id = parent_id
4704
# Either none of the parents ended up being suitable, or we
4705
# were asked to delta against NULL
4706
basis_id = _mod_revision.NULL_REVISION
4707
delta = inv._make_delta(null_inventory)
4708
invs_sent_so_far.add(inv.revision_id)
4709
inventory_cache[inv.revision_id] = inv
4710
delta_serialized = ''.join(
4711
serializer.delta_to_lines(basis_id, key[-1], delta))
4712
4329
yield versionedfile.FulltextContentFactory(
4713
key, parent_keys, None, delta_serialized)
4716
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4717
stop_revision=None):
4718
"""Extend the partial history to include a given index
4720
If a stop_index is supplied, stop when that index has been reached.
4721
If a stop_revision is supplied, stop when that revision is
4722
encountered. Otherwise, stop when the beginning of history is
4725
:param stop_index: The index which should be present. When it is
4726
present, history extension will stop.
4727
:param stop_revision: The revision id which should be present. When
4728
it is encountered, history extension will stop.
4730
start_revision = partial_history_cache[-1]
4731
iterator = repo.iter_reverse_revision_history(start_revision)
4733
#skip the last revision in the list
4736
if (stop_index is not None and
4737
len(partial_history_cache) > stop_index):
4739
if partial_history_cache[-1] == stop_revision:
4741
revision_id = iterator.next()
4742
partial_history_cache.append(revision_id)
4743
except StopIteration:
4330
key, parent_keys, None, as_bytes)
added
removed
bzrlib/repository.py
