1181
1145
# The old API returned a list, should this actually be a set?
1182
1146
return parent_map.keys()
1184
def _check_inventories(self, checker):
1185
"""Check the inventories found from the revision scan.
1187
This is responsible for verifying the sha1 of inventories and
1188
creating a pending_keys set that covers data referenced by inventories.
1190
bar = ui.ui_factory.nested_progress_bar()
1192
self._do_check_inventories(checker, bar)
1196
def _do_check_inventories(self, checker, bar):
1197
"""Helper for _check_inventories."""
1199
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1200
kinds = ['chk_bytes', 'texts']
1201
count = len(checker.pending_keys)
1202
bar.update("inventories", 0, 2)
1203
current_keys = checker.pending_keys
1204
checker.pending_keys = {}
1205
# Accumulate current checks.
1206
for key in current_keys:
1207
if key[0] != 'inventories' and key[0] not in kinds:
1208
checker._report_items.append('unknown key type %r' % (key,))
1209
keys[key[0]].add(key[1:])
1210
if keys['inventories']:
1211
# NB: output order *should* be roughly sorted - topo or
1212
# inverse topo depending on repository - either way decent
1213
# to just delta against. However, pre-CHK formats didn't
1214
# try to optimise inventory layout on disk. As such the
1215
# pre-CHK code path does not use inventory deltas.
1217
for record in self.inventories.check(keys=keys['inventories']):
1218
if record.storage_kind == 'absent':
1219
checker._report_items.append(
1220
'Missing inventory {%s}' % (record.key,))
1222
last_object = self._check_record('inventories', record,
1223
checker, last_object,
1224
current_keys[('inventories',) + record.key])
1225
del keys['inventories']
1228
bar.update("texts", 1)
1229
while (checker.pending_keys or keys['chk_bytes']
1231
# Something to check.
1232
current_keys = checker.pending_keys
1233
checker.pending_keys = {}
1234
# Accumulate current checks.
1235
for key in current_keys:
1236
if key[0] not in kinds:
1237
checker._report_items.append('unknown key type %r' % (key,))
1238
keys[key[0]].add(key[1:])
1239
# Check the outermost kind only - inventories || chk_bytes || texts
1243
for record in getattr(self, kind).check(keys=keys[kind]):
1244
if record.storage_kind == 'absent':
1245
checker._report_items.append(
1246
'Missing %s {%s}' % (kind, record.key,))
1248
last_object = self._check_record(kind, record,
1249
checker, last_object, current_keys[(kind,) + record.key])
1253
def _check_record(self, kind, record, checker, last_object, item_data):
1254
"""Check a single text from this repository."""
1255
if kind == 'inventories':
1256
rev_id = record.key[0]
1257
inv = self._deserialise_inventory(rev_id,
1258
record.get_bytes_as('fulltext'))
1259
if last_object is not None:
1260
delta = inv._make_delta(last_object)
1261
for old_path, path, file_id, ie in delta:
1264
ie.check(checker, rev_id, inv)
1266
for path, ie in inv.iter_entries():
1267
ie.check(checker, rev_id, inv)
1268
if self._format.fast_deltas:
1270
elif kind == 'chk_bytes':
1271
# No code written to check chk_bytes for this repo format.
1272
checker._report_items.append(
1273
'unsupported key type chk_bytes for %s' % (record.key,))
1274
elif kind == 'texts':
1275
self._check_text(record, checker, item_data)
1277
checker._report_items.append(
1278
'unknown key type %s for %s' % (kind, record.key))
1280
def _check_text(self, record, checker, item_data):
1281
"""Check a single text."""
1282
# Check it is extractable.
1283
# TODO: check length.
1284
if record.storage_kind == 'chunked':
1285
chunks = record.get_bytes_as(record.storage_kind)
1286
sha1 = osutils.sha_strings(chunks)
1287
length = sum(map(len, chunks))
1289
content = record.get_bytes_as('fulltext')
1290
sha1 = osutils.sha_string(content)
1291
length = len(content)
1292
if item_data and sha1 != item_data[1]:
1293
checker._report_items.append(
1294
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1295
(record.key, sha1, item_data[1], item_data[2]))
1298
1149
def create(a_bzrdir):
1299
1150
"""Construct the current default format repository in a_bzrdir."""
1880
1693
@needs_read_lock
1881
1694
def get_revisions(self, revision_ids):
1882
"""Get many revisions at once.
1884
Repositories that need to check data on every revision read should
1885
subclass this method.
1695
"""Get many revisions at once."""
1887
1696
return self._get_revisions(revision_ids)
1889
1698
@needs_read_lock
1890
1699
def _get_revisions(self, revision_ids):
1891
1700
"""Core work logic to get many revisions without sanity checks."""
1701
for rev_id in revision_ids:
1702
if not rev_id or not isinstance(rev_id, basestring):
1703
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1704
keys = [(key,) for key in revision_ids]
1705
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1893
for revid, rev in self._iter_revisions(revision_ids):
1895
raise errors.NoSuchRevision(self, revid)
1707
for record in stream:
1708
if record.storage_kind == 'absent':
1709
raise errors.NoSuchRevision(self, record.key[0])
1710
text = record.get_bytes_as('fulltext')
1711
rev = self._serializer.read_revision_from_string(text)
1712
revs[record.key[0]] = rev
1897
1713
return [revs[revid] for revid in revision_ids]
1899
def _iter_revisions(self, revision_ids):
1900
"""Iterate over revision objects.
1902
:param revision_ids: An iterable of revisions to examine. None may be
1903
passed to request all revisions known to the repository. Note that
1904
not all repositories can find unreferenced revisions; for those
1905
repositories only referenced ones will be returned.
1906
:return: An iterator of (revid, revision) tuples. Absent revisions (
1907
those asked for but not available) are returned as (revid, None).
1909
if revision_ids is None:
1910
revision_ids = self.all_revision_ids()
1912
for rev_id in revision_ids:
1913
if not rev_id or not isinstance(rev_id, basestring):
1914
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1915
keys = [(key,) for key in revision_ids]
1916
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1917
for record in stream:
1918
revid = record.key[0]
1919
if record.storage_kind == 'absent':
1922
text = record.get_bytes_as('fulltext')
1923
rev = self._serializer.read_revision_from_string(text)
1716
def get_revision_xml(self, revision_id):
1717
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1718
# would have already do it.
1719
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1720
# TODO: this can't just be replaced by:
1721
# return self._serializer.write_revision_to_string(
1722
# self.get_revision(revision_id))
1723
# as cStringIO preservers the encoding unlike write_revision_to_string
1724
# or some other call down the path.
1725
rev = self.get_revision(revision_id)
1726
rev_tmp = cStringIO.StringIO()
1727
# the current serializer..
1728
self._serializer.write_revision(rev, rev_tmp)
1730
return rev_tmp.getvalue()
1926
1732
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1927
1733
"""Produce a generator of revision deltas.
2377
2188
:param revision_ids: The expected revision ids of the inventories.
2378
:param ordering: optional ordering, e.g. 'topological'. If not
2379
specified, the order of revision_ids will be preserved (by
2380
buffering if necessary).
2381
2189
:return: An iterator of inventories.
2383
2191
if ((None in revision_ids)
2384
2192
or (_mod_revision.NULL_REVISION in revision_ids)):
2385
2193
raise ValueError('cannot get null revision inventory')
2386
return self._iter_inventories(revision_ids, ordering)
2194
return self._iter_inventories(revision_ids)
2388
def _iter_inventories(self, revision_ids, ordering):
2196
def _iter_inventories(self, revision_ids):
2389
2197
"""single-document based inventory iteration."""
2390
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2391
for text, revision_id in inv_xmls:
2392
yield self._deserialise_inventory(revision_id, text)
2198
for text, revision_id in self._iter_inventory_xmls(revision_ids):
2199
yield self.deserialise_inventory(revision_id, text)
2394
def _iter_inventory_xmls(self, revision_ids, ordering):
2395
if ordering is None:
2396
order_as_requested = True
2397
ordering = 'unordered'
2399
order_as_requested = False
2201
def _iter_inventory_xmls(self, revision_ids):
2400
2202
keys = [(revision_id,) for revision_id in revision_ids]
2403
if order_as_requested:
2404
key_iter = iter(keys)
2405
next_key = key_iter.next()
2406
stream = self.inventories.get_record_stream(keys, ordering, True)
2203
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2407
2204
text_chunks = {}
2408
2205
for record in stream:
2409
2206
if record.storage_kind != 'absent':
2410
chunks = record.get_bytes_as('chunked')
2411
if order_as_requested:
2412
text_chunks[record.key] = chunks
2414
yield ''.join(chunks), record.key[-1]
2207
text_chunks[record.key] = record.get_bytes_as('chunked')
2416
2209
raise errors.NoSuchRevision(self, record.key)
2417
if order_as_requested:
2418
# Yield as many results as we can while preserving order.
2419
while next_key in text_chunks:
2420
chunks = text_chunks.pop(next_key)
2421
yield ''.join(chunks), next_key[-1]
2423
next_key = key_iter.next()
2424
except StopIteration:
2425
# We still want to fully consume the get_record_stream,
2426
# just in case it is not actually finished at this point
2211
chunks = text_chunks.pop(key)
2212
yield ''.join(chunks), key[-1]
2430
def _deserialise_inventory(self, revision_id, xml):
2214
def deserialise_inventory(self, revision_id, xml):
2431
2215
"""Transform the xml into an inventory object.
2433
2217
:param revision_id: The expected revision id of the inventory.
2434
2218
:param xml: A serialised inventory.
2436
2220
result = self._serializer.read_inventory_from_string(xml, revision_id,
2437
entry_cache=self._inventory_entry_cache,
2438
return_from_cache=self._safe_to_return_from_cache)
2221
entry_cache=self._inventory_entry_cache)
2439
2222
if result.revision_id != revision_id:
2440
2223
raise AssertionError('revision id mismatch %s != %s' % (
2441
2224
result.revision_id, revision_id))
2227
def serialise_inventory(self, inv):
2228
return self._serializer.write_inventory_to_string(inv)
2230
def _serialise_inventory_to_lines(self, inv):
2231
return self._serializer.write_inventory_to_lines(inv)
2444
2233
def get_serializer_format(self):
2445
2234
return self._serializer.format_num
2447
2236
@needs_read_lock
2448
def _get_inventory_xml(self, revision_id):
2449
"""Get serialized inventory as a string."""
2450
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2237
def get_inventory_xml(self, revision_id):
2238
"""Get inventory XML as a file object."""
2239
texts = self._iter_inventory_xmls([revision_id])
2452
2241
text, revision_id = texts.next()
2453
2242
except StopIteration:
2454
2243
raise errors.HistoryMissing(self, 'inventory', revision_id)
2247
def get_inventory_sha1(self, revision_id):
2248
"""Return the sha1 hash of the inventory entry
2250
return self.get_revision(revision_id).inventory_sha1
2457
2252
def get_rev_id_for_revno(self, revno, known_pair):
2458
2253
"""Return the revision id of a revno, given a later (revno, revid)
2459
2254
pair in the same history.
3738
3492
# This is redundant with format.check_conversion_target(), however that
3739
3493
# raises an exception, and we just want to say "False" as in we won't
3740
3494
# support converting between these formats.
3741
if 'IDS_never' in debug.debug_flags:
3743
3495
if source.supports_rich_root() and not target.supports_rich_root():
3745
3497
if (source._format.supports_tree_reference
3746
3498
and not target._format.supports_tree_reference):
3748
if target._fallback_repositories and target._format.supports_chks:
3749
# IDS doesn't know how to copy CHKs for the parent inventories it
3750
# adds to stacked repos.
3752
if 'IDS_always' in debug.debug_flags:
3754
# Only use this code path for local source and target. IDS does far
3755
# too much IO (both bandwidth and roundtrips) over a network.
3756
if not source.bzrdir.transport.base.startswith('file:///'):
3758
if not target.bzrdir.transport.base.startswith('file:///'):
3762
def _get_trees(self, revision_ids, cache):
3764
for rev_id in revision_ids:
3766
possible_trees.append((rev_id, cache[rev_id]))
3768
# Not cached, but inventory might be present anyway.
3770
tree = self.source.revision_tree(rev_id)
3771
except errors.NoSuchRevision:
3772
# Nope, parent is ghost.
3775
cache[rev_id] = tree
3776
possible_trees.append((rev_id, tree))
3777
return possible_trees
3779
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3502
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3780
3503
"""Get the best delta and base for this revision.
3782
3505
:return: (basis_id, delta)
3507
possible_trees = [(parent_id, cache[parent_id])
3508
for parent_id in parent_ids
3509
if parent_id in cache]
3510
if len(possible_trees) == 0:
3511
# There either aren't any parents, or the parents aren't in the
3512
# cache, so just use the last converted tree
3513
possible_trees.append((basis_id, cache[basis_id]))
3785
# Generate deltas against each tree, to find the shortest.
3786
texts_possibly_new_in_tree = set()
3787
3515
for basis_id, basis_tree in possible_trees:
3788
3516
delta = tree.inventory._make_delta(basis_tree.inventory)
3789
for old_path, new_path, file_id, new_entry in delta:
3790
if new_path is None:
3791
# This file_id isn't present in the new rev, so we don't
3795
# Rich roots are handled elsewhere...
3797
kind = new_entry.kind
3798
if kind != 'directory' and kind != 'file':
3799
# No text record associated with this inventory entry.
3801
# This is a directory or file that has changed somehow.
3802
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3803
3517
deltas.append((len(delta), basis_id, delta))
3805
3519
return deltas[0][1:]
3807
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3808
"""Find all parent revisions that are absent, but for which the
3809
inventory is present, and copy those inventories.
3811
This is necessary to preserve correctness when the source is stacked
3812
without fallbacks configured. (Note that in cases like upgrade the
3813
source may be not have _fallback_repositories even though it is
3817
for parents in parent_map.values():
3818
parent_revs.update(parents)
3819
present_parents = self.source.get_parent_map(parent_revs)
3820
absent_parents = set(parent_revs).difference(present_parents)
3821
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3822
(rev_id,) for rev_id in absent_parents)
3823
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3824
for parent_tree in self.source.revision_trees(parent_inv_ids):
3825
current_revision_id = parent_tree.get_revision_id()
3826
parents_parents_keys = parent_invs_keys_for_stacking[
3827
(current_revision_id,)]
3828
parents_parents = [key[-1] for key in parents_parents_keys]
3829
basis_id = _mod_revision.NULL_REVISION
3830
basis_tree = self.source.revision_tree(basis_id)
3831
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3832
self.target.add_inventory_by_delta(
3833
basis_id, delta, current_revision_id, parents_parents)
3834
cache[current_revision_id] = parent_tree
3836
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3521
def _get_parent_keys(self, root_key, parent_map):
3522
"""Get the parent keys for a given root id."""
3523
root_id, rev_id = root_key
3524
# Include direct parents of the revision, but only if they used
3525
# the same root_id and are heads.
3527
for parent_id in parent_map[rev_id]:
3528
if parent_id == _mod_revision.NULL_REVISION:
3530
if parent_id not in self._revision_id_to_root_id:
3531
# We probably didn't read this revision, go spend the
3532
# extra effort to actually check
3534
tree = self.source.revision_tree(parent_id)
3535
except errors.NoSuchRevision:
3536
# Ghost, fill out _revision_id_to_root_id in case we
3537
# encounter this again.
3538
# But set parent_root_id to None since we don't really know
3539
parent_root_id = None
3541
parent_root_id = tree.get_root_id()
3542
self._revision_id_to_root_id[parent_id] = None
3544
parent_root_id = self._revision_id_to_root_id[parent_id]
3545
if root_id == parent_root_id:
3546
# With stacking we _might_ want to refer to a non-local
3547
# revision, but this code path only applies when we have the
3548
# full content available, so ghosts really are ghosts, not just
3549
# the edge of local data.
3550
parent_keys.append((parent_id,))
3552
# root_id may be in the parent anyway.
3554
tree = self.source.revision_tree(parent_id)
3555
except errors.NoSuchRevision:
3556
# ghost, can't refer to it.
3560
parent_keys.append((tree.inventory[root_id].revision,))
3561
except errors.NoSuchId:
3564
g = graph.Graph(self.source.revisions)
3565
heads = g.heads(parent_keys)
3567
for key in parent_keys:
3568
if key in heads and key not in selected_keys:
3569
selected_keys.append(key)
3570
return tuple([(root_id,)+ key for key in selected_keys])
3572
def _new_root_data_stream(self, root_keys_to_create, parent_map):
3573
for root_key in root_keys_to_create:
3574
parent_keys = self._get_parent_keys(root_key, parent_map)
3575
yield versionedfile.FulltextContentFactory(root_key,
3576
parent_keys, None, '')
3578
def _fetch_batch(self, revision_ids, basis_id, cache):
3837
3579
"""Fetch across a few revisions.
3839
3581
:param revision_ids: The revisions to copy
3840
3582
:param basis_id: The revision_id of a tree that must be in cache, used
3841
3583
as a basis for delta when no other base is available
3842
3584
:param cache: A cache of RevisionTrees that we can use.
3843
:param a_graph: A Graph object to determine the heads() of the
3844
rich-root data stream.
3845
3585
:return: The revision_id of the last converted tree. The RevisionTree
3846
3586
for it will be in cache
3853
3593
pending_deltas = []
3854
3594
pending_revisions = []
3855
3595
parent_map = self.source.get_parent_map(revision_ids)
3856
self._fetch_parent_invs_for_stacking(parent_map, cache)
3857
self.source._safe_to_return_from_cache = True
3858
3596
for tree in self.source.revision_trees(revision_ids):
3859
# Find a inventory delta for this revision.
3860
# Find text entries that need to be copied, too.
3861
3597
current_revision_id = tree.get_revision_id()
3862
3598
parent_ids = parent_map.get(current_revision_id, ())
3863
parent_trees = self._get_trees(parent_ids, cache)
3864
possible_trees = list(parent_trees)
3865
if len(possible_trees) == 0:
3866
# There either aren't any parents, or the parents are ghosts,
3867
# so just use the last converted tree.
3868
possible_trees.append((basis_id, cache[basis_id]))
3869
3599
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3871
revision = self.source.get_revision(current_revision_id)
3872
pending_deltas.append((basis_id, delta,
3873
current_revision_id, revision.parent_ids))
3874
3601
if self._converting_to_rich_root:
3875
3602
self._revision_id_to_root_id[current_revision_id] = \
3876
3603
tree.get_root_id()
3877
# Determine which texts are in present in this revision but not in
3878
# any of the available parents.
3879
texts_possibly_new_in_tree = set()
3604
# Find text entries that need to be copied
3880
3605
for old_path, new_path, file_id, entry in delta:
3881
if new_path is None:
3882
# This file_id isn't present in the new rev
3886
if not self.target.supports_rich_root():
3887
# The target doesn't support rich root, so we don't
3890
if self._converting_to_rich_root:
3891
# This can't be copied normally, we have to insert
3893
root_keys_to_create.add((file_id, entry.revision))
3896
texts_possibly_new_in_tree.add((file_id, entry.revision))
3897
for basis_id, basis_tree in possible_trees:
3898
basis_inv = basis_tree.inventory
3899
for file_key in list(texts_possibly_new_in_tree):
3900
file_id, file_revision = file_key
3902
entry = basis_inv[file_id]
3903
except errors.NoSuchId:
3905
if entry.revision == file_revision:
3906
texts_possibly_new_in_tree.remove(file_key)
3907
text_keys.update(texts_possibly_new_in_tree)
3606
if new_path is not None:
3609
if not self.target.supports_rich_root():
3610
# The target doesn't support rich root, so we don't
3613
if self._converting_to_rich_root:
3614
# This can't be copied normally, we have to insert
3616
root_keys_to_create.add((file_id, entry.revision))
3618
text_keys.add((file_id, entry.revision))
3619
revision = self.source.get_revision(current_revision_id)
3620
pending_deltas.append((basis_id, delta,
3621
current_revision_id, revision.parent_ids))
3908
3622
pending_revisions.append(revision)
3909
3623
cache[current_revision_id] = tree
3910
3624
basis_id = current_revision_id
3911
self.source._safe_to_return_from_cache = False
3912
3625
# Copy file texts
3913
3626
from_texts = self.source.texts
3914
3627
to_texts = self.target.texts
3915
3628
if root_keys_to_create:
3916
root_stream = _mod_fetch._new_root_data_stream(
3917
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3918
self.source, graph=a_graph)
3629
root_stream = self._new_root_data_stream(root_keys_to_create,
3919
3631
to_texts.insert_record_stream(root_stream)
3920
3632
to_texts.insert_record_stream(from_texts.get_record_stream(
3921
3633
text_keys, self.target._format._fetch_order,
4583
4224
return (not self.from_repository._format.rich_root_data and
4584
4225
self.to_format.rich_root_data)
4586
def _get_inventory_stream(self, revision_ids, missing=False):
4227
def _get_inventory_stream(self, revision_ids):
4587
4228
from_format = self.from_repository._format
4588
if (from_format.supports_chks and self.to_format.supports_chks and
4589
from_format.network_name() == self.to_format.network_name()):
4590
raise AssertionError(
4591
"this case should be handled by GroupCHKStreamSource")
4592
elif 'forceinvdeltas' in debug.debug_flags:
4593
return self._get_convertable_inventory_stream(revision_ids,
4594
delta_versus_null=missing)
4595
elif from_format.network_name() == self.to_format.network_name():
4597
return self._get_simple_inventory_stream(revision_ids,
4599
elif (not from_format.supports_chks and not self.to_format.supports_chks
4600
and from_format._serializer == self.to_format._serializer):
4601
# Essentially the same format.
4602
return self._get_simple_inventory_stream(revision_ids,
4229
if (from_format.supports_chks and self.to_format.supports_chks
4230
and (from_format._serializer == self.to_format._serializer)):
4231
# Both sides support chks, and they use the same serializer, so it
4232
# is safe to transmit the chk pages and inventory pages across
4234
return self._get_chk_inventory_stream(revision_ids)
4235
elif (not from_format.supports_chks):
4236
# Source repository doesn't support chks. So we can transmit the
4237
# inventories 'as-is' and either they are just accepted on the
4238
# target, or the Sink will properly convert it.
4239
return self._get_simple_inventory_stream(revision_ids)
4605
# Any time we switch serializations, we want to use an
4606
# inventory-delta based approach.
4607
return self._get_convertable_inventory_stream(revision_ids,
4608
delta_versus_null=missing)
4241
# XXX: Hack to make not-chk->chk fetch: copy the inventories as
4242
# inventories. Note that this should probably be done somehow
4243
# as part of bzrlib.repository.StreamSink. Except JAM couldn't
4244
# figure out how a non-chk repository could possibly handle
4245
# deserializing an inventory stream from a chk repo, as it
4246
# doesn't have a way to understand individual pages.
4247
return self._get_convertable_inventory_stream(revision_ids)
4610
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4611
# NB: This currently reopens the inventory weave in source;
4612
# using a single stream interface instead would avoid this.
4249
def _get_simple_inventory_stream(self, revision_ids):
4613
4250
from_weave = self.from_repository.inventories
4615
delta_closure = True
4617
delta_closure = not self.delta_on_metadata()
4618
4251
yield ('inventories', from_weave.get_record_stream(
4619
4252
[(rev_id,) for rev_id in revision_ids],
4620
self.inventory_fetch_order(), delta_closure))
4622
def _get_convertable_inventory_stream(self, revision_ids,
4623
delta_versus_null=False):
4624
# The two formats are sufficiently different that there is no fast
4625
# path, so we need to send just inventorydeltas, which any
4626
# sufficiently modern client can insert into any repository.
4627
# The StreamSink code expects to be able to
4628
# convert on the target, so we need to put bytes-on-the-wire that can
4629
# be converted. That means inventory deltas (if the remote is <1.19,
4630
# RemoteStreamSink will fallback to VFS to insert the deltas).
4631
yield ('inventory-deltas',
4632
self._stream_invs_as_deltas(revision_ids,
4633
delta_versus_null=delta_versus_null))
4635
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4636
"""Return a stream of inventory-deltas for the given rev ids.
4638
:param revision_ids: The list of inventories to transmit
4639
:param delta_versus_null: Don't try to find a minimal delta for this
4640
entry, instead compute the delta versus the NULL_REVISION. This
4641
effectively streams a complete inventory. Used for stuff like
4642
filling in missing parents, etc.
4253
self.inventory_fetch_order(),
4254
not self.delta_on_metadata()))
4256
def _get_chk_inventory_stream(self, revision_ids):
4257
"""Fetch the inventory texts, along with the associated chk maps."""
4258
# We want an inventory outside of the search set, so that we can filter
4259
# out uninteresting chk pages. For now we use
4260
# _find_revision_outside_set, but if we had a Search with cut_revs, we
4261
# could use that instead.
4262
start_rev_id = self.from_repository._find_revision_outside_set(
4264
start_rev_key = (start_rev_id,)
4265
inv_keys_to_fetch = [(rev_id,) for rev_id in revision_ids]
4266
if start_rev_id != _mod_revision.NULL_REVISION:
4267
inv_keys_to_fetch.append((start_rev_id,))
4268
# Any repo that supports chk_bytes must also support out-of-order
4269
# insertion. At least, that is how we expect it to work
4270
# We use get_record_stream instead of iter_inventories because we want
4271
# to be able to insert the stream as well. We could instead fetch
4272
# allowing deltas, and then iter_inventories, but we don't know whether
4273
# source or target is more 'local' anway.
4274
inv_stream = self.from_repository.inventories.get_record_stream(
4275
inv_keys_to_fetch, 'unordered',
4276
True) # We need them as full-texts so we can find their references
4277
uninteresting_chk_roots = set()
4278
interesting_chk_roots = set()
4279
def filter_inv_stream(inv_stream):
4280
for idx, record in enumerate(inv_stream):
4281
### child_pb.update('fetch inv', idx, len(inv_keys_to_fetch))
4282
bytes = record.get_bytes_as('fulltext')
4283
chk_inv = inventory.CHKInventory.deserialise(
4284
self.from_repository.chk_bytes, bytes, record.key)
4285
if record.key == start_rev_key:
4286
uninteresting_chk_roots.add(chk_inv.id_to_entry.key())
4287
p_id_map = chk_inv.parent_id_basename_to_file_id
4288
if p_id_map is not None:
4289
uninteresting_chk_roots.add(p_id_map.key())
4292
interesting_chk_roots.add(chk_inv.id_to_entry.key())
4293
p_id_map = chk_inv.parent_id_basename_to_file_id
4294
if p_id_map is not None:
4295
interesting_chk_roots.add(p_id_map.key())
4296
### pb.update('fetch inventory', 0, 2)
4297
yield ('inventories', filter_inv_stream(inv_stream))
4298
# Now that we have worked out all of the interesting root nodes, grab
4299
# all of the interesting pages and insert them
4300
### pb.update('fetch inventory', 1, 2)
4301
interesting = chk_map.iter_interesting_nodes(
4302
self.from_repository.chk_bytes, interesting_chk_roots,
4303
uninteresting_chk_roots)
4304
def to_stream_adapter():
4305
"""Adapt the iter_interesting_nodes result to a single stream.
4307
iter_interesting_nodes returns records as it processes them, along
4308
with keys. However, we only want to return the records themselves.
4310
for record, items in interesting:
4311
if record is not None:
4313
# XXX: We could instead call get_record_stream(records.keys())
4314
# ATM, this will always insert the records as fulltexts, and
4315
# requires that you can hang on to records once you have gone
4316
# on to the next one. Further, it causes the target to
4317
# recompress the data. Testing shows it to be faster than
4318
# requesting the records again, though.
4319
yield ('chk_bytes', to_stream_adapter())
4320
### pb.update('fetch inventory', 2, 2)
4322
def _get_convertable_inventory_stream(self, revision_ids):
4323
# XXX: One of source or target is using chks, and they don't have
4324
# compatible serializations. The StreamSink code expects to be
4325
# able to convert on the target, so we need to put
4326
# bytes-on-the-wire that can be converted
4327
yield ('inventories', self._stream_invs_as_fulltexts(revision_ids))
4329
def _stream_invs_as_fulltexts(self, revision_ids):
4644
4330
from_repo = self.from_repository
4331
from_serializer = from_repo._format._serializer
4645
4332
revision_keys = [(rev_id,) for rev_id in revision_ids]
4646
4333
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4647
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4649
inventories = self.from_repository.iter_inventories(
4650
revision_ids, 'topological')
4651
format = from_repo._format
4652
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4653
inventory_cache = lru_cache.LRUCache(50)
4654
null_inventory = from_repo.revision_tree(
4655
_mod_revision.NULL_REVISION).inventory
4656
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4657
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4658
# repo back into a non-rich-root repo ought to be allowed)
4659
serializer = inventory_delta.InventoryDeltaSerializer(
4660
versioned_root=format.rich_root_data,
4661
tree_references=format.supports_tree_reference)
4662
for inv in inventories:
4334
for inv in self.from_repository.iter_inventories(revision_ids):
4335
# XXX: This is a bit hackish, but it works. Basically,
4336
# CHKSerializer 'accidentally' supports
4337
# read/write_inventory_to_string, even though that is never
4338
# the format that is stored on disk. It *does* give us a
4339
# single string representation for an inventory, so live with
4341
# This would be far better if we had a 'serialized inventory
4342
# delta' form. Then we could use 'inventory._make_delta', and
4343
# transmit that. This would both be faster to generate, and
4344
# result in fewer bytes-on-the-wire.
4345
as_bytes = from_serializer.write_inventory_to_string(inv)
4663
4346
key = (inv.revision_id,)
4664
4347
parent_keys = parent_map.get(key, ())
4666
if not delta_versus_null and parent_keys:
4667
# The caller did not ask for complete inventories and we have
4668
# some parents that we can delta against. Make a delta against
4669
# each parent so that we can find the smallest.
4670
parent_ids = [parent_key[0] for parent_key in parent_keys]
4671
for parent_id in parent_ids:
4672
if parent_id not in invs_sent_so_far:
4673
# We don't know that the remote side has this basis, so
4676
if parent_id == _mod_revision.NULL_REVISION:
4677
parent_inv = null_inventory
4679
parent_inv = inventory_cache.get(parent_id, None)
4680
if parent_inv is None:
4681
parent_inv = from_repo.get_inventory(parent_id)
4682
candidate_delta = inv._make_delta(parent_inv)
4683
if (delta is None or
4684
len(delta) > len(candidate_delta)):
4685
delta = candidate_delta
4686
basis_id = parent_id
4688
# Either none of the parents ended up being suitable, or we
4689
# were asked to delta against NULL
4690
basis_id = _mod_revision.NULL_REVISION
4691
delta = inv._make_delta(null_inventory)
4692
invs_sent_so_far.add(inv.revision_id)
4693
inventory_cache[inv.revision_id] = inv
4694
delta_serialized = ''.join(
4695
serializer.delta_to_lines(basis_id, key[-1], delta))
4696
4348
yield versionedfile.FulltextContentFactory(
4697
key, parent_keys, None, delta_serialized)
4349
key, parent_keys, None, as_bytes)
4700
4352
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
added
removed
bzrlib/repository.py
