1168
1154
# The old API returned a list, should this actually be a set?
1169
1155
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
1158
def create(a_bzrdir):
1286
1159
"""Construct the current default format repository in a_bzrdir."""
1860
1701
@needs_read_lock
1861
1702
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.
1703
"""Get many revisions at once."""
1867
1704
return self._get_revisions(revision_ids)
1869
1706
@needs_read_lock
1870
1707
def _get_revisions(self, revision_ids):
1871
1708
"""Core work logic to get many revisions without sanity checks."""
1709
for rev_id in revision_ids:
1710
if not rev_id or not isinstance(rev_id, basestring):
1711
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1712
keys = [(key,) for key in revision_ids]
1713
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)
1715
for record in stream:
1716
if record.storage_kind == 'absent':
1717
raise errors.NoSuchRevision(self, record.key[0])
1718
text = record.get_bytes_as('fulltext')
1719
rev = self._serializer.read_revision_from_string(text)
1720
revs[record.key[0]] = rev
1877
1721
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)
1724
def get_revision_xml(self, revision_id):
1725
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1726
# would have already do it.
1727
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1728
# TODO: this can't just be replaced by:
1729
# return self._serializer.write_revision_to_string(
1730
# self.get_revision(revision_id))
1731
# as cStringIO preservers the encoding unlike write_revision_to_string
1732
# or some other call down the path.
1733
rev = self.get_revision(revision_id)
1734
rev_tmp = cStringIO.StringIO()
1735
# the current serializer..
1736
self._serializer.write_revision(rev, rev_tmp)
1738
return rev_tmp.getvalue()
1906
1740
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1907
1741
"""Produce a generator of revision deltas.
2357
2196
: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
2197
:return: An iterator of inventories.
2363
2199
if ((None in revision_ids)
2364
2200
or (_mod_revision.NULL_REVISION in revision_ids)):
2365
2201
raise ValueError('cannot get null revision inventory')
2366
return self._iter_inventories(revision_ids, ordering)
2202
return self._iter_inventories(revision_ids)
2368
def _iter_inventories(self, revision_ids, ordering):
2204
def _iter_inventories(self, revision_ids):
2369
2205
"""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)
2206
for text, revision_id in self._iter_inventory_xmls(revision_ids):
2207
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
2209
def _iter_inventory_xmls(self, revision_ids):
2380
2210
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)
2211
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2387
2212
text_chunks = {}
2388
2213
for record in stream:
2389
2214
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]
2215
text_chunks[record.key] = record.get_bytes_as('chunked')
2396
2217
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
2219
chunks = text_chunks.pop(key)
2220
yield ''.join(chunks), key[-1]
2410
def _deserialise_inventory(self, revision_id, xml):
2222
def deserialise_inventory(self, revision_id, xml):
2411
2223
"""Transform the xml into an inventory object.
2413
2225
:param revision_id: The expected revision id of the inventory.
2414
2226
:param xml: A serialised inventory.
2416
2228
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)
2229
entry_cache=self._inventory_entry_cache)
2419
2230
if result.revision_id != revision_id:
2420
2231
raise AssertionError('revision id mismatch %s != %s' % (
2421
2232
result.revision_id, revision_id))
2235
def serialise_inventory(self, inv):
2236
return self._serializer.write_inventory_to_string(inv)
2238
def _serialise_inventory_to_lines(self, inv):
2239
return self._serializer.write_inventory_to_lines(inv)
2424
2241
def get_serializer_format(self):
2425
2242
return self._serializer.format_num
2427
2244
@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')
2245
def get_inventory_xml(self, revision_id):
2246
"""Get inventory XML as a file object."""
2247
texts = self._iter_inventory_xmls([revision_id])
2432
2249
text, revision_id = texts.next()
2433
2250
except StopIteration:
2434
2251
raise errors.HistoryMissing(self, 'inventory', revision_id)
2255
def get_inventory_sha1(self, revision_id):
2256
"""Return the sha1 hash of the inventory entry
2258
return self.get_revision(revision_id).inventory_sha1
2437
2260
def get_rev_id_for_revno(self, revno, known_pair):
2438
2261
"""Return the revision id of a revno, given a later (revno, revid)
2439
2262
pair in the same history.
3718
3488
# This is redundant with format.check_conversion_target(), however that
3719
3489
# raises an exception, and we just want to say "False" as in we won't
3720
3490
# support converting between these formats.
3721
if 'IDS_never' in debug.debug_flags:
3723
3491
if source.supports_rich_root() and not target.supports_rich_root():
3725
3493
if (source._format.supports_tree_reference
3726
3494
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:///'):
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):
3498
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3760
3499
"""Get the best delta and base for this revision.
3762
3501
:return: (basis_id, delta)
3503
possible_trees = [(parent_id, cache[parent_id])
3504
for parent_id in parent_ids
3505
if parent_id in cache]
3506
if len(possible_trees) == 0:
3507
# There either aren't any parents, or the parents aren't in the
3508
# cache, so just use the last converted tree
3509
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
3511
for basis_id, basis_tree in possible_trees:
3768
3512
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
3513
deltas.append((len(delta), basis_id, delta))
3785
3515
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):
3517
def _get_parent_keys(self, root_key, parent_map):
3518
"""Get the parent keys for a given root id."""
3519
root_id, rev_id = root_key
3520
# Include direct parents of the revision, but only if they used
3521
# the same root_id and are heads.
3523
for parent_id in parent_map[rev_id]:
3524
if parent_id == _mod_revision.NULL_REVISION:
3526
if parent_id not in self._revision_id_to_root_id:
3527
# We probably didn't read this revision, go spend the
3528
# extra effort to actually check
3530
tree = self.source.revision_tree(parent_id)
3531
except errors.NoSuchRevision:
3532
# Ghost, fill out _revision_id_to_root_id in case we
3533
# encounter this again.
3534
# But set parent_root_id to None since we don't really know
3535
parent_root_id = None
3537
parent_root_id = tree.get_root_id()
3538
self._revision_id_to_root_id[parent_id] = None
3540
parent_root_id = self._revision_id_to_root_id[parent_id]
3541
if root_id == parent_root_id:
3542
# With stacking we _might_ want to refer to a non-local
3543
# revision, but this code path only applies when we have the
3544
# full content available, so ghosts really are ghosts, not just
3545
# the edge of local data.
3546
parent_keys.append((parent_id,))
3548
# root_id may be in the parent anyway.
3550
tree = self.source.revision_tree(parent_id)
3551
except errors.NoSuchRevision:
3552
# ghost, can't refer to it.
3556
parent_keys.append((tree.inventory[root_id].revision,))
3557
except errors.NoSuchId:
3560
g = graph.Graph(self.source.revisions)
3561
heads = g.heads(parent_keys)
3563
for key in parent_keys:
3564
if key in heads and key not in selected_keys:
3565
selected_keys.append(key)
3566
return tuple([(root_id,)+ key for key in selected_keys])
3568
def _new_root_data_stream(self, root_keys_to_create, parent_map):
3569
for root_key in root_keys_to_create:
3570
parent_keys = self._get_parent_keys(root_key, parent_map)
3571
yield versionedfile.FulltextContentFactory(root_key,
3572
parent_keys, None, '')
3574
def _fetch_batch(self, revision_ids, basis_id, cache):
3817
3575
"""Fetch across a few revisions.
3819
3577
:param revision_ids: The revisions to copy
3820
3578
:param basis_id: The revision_id of a tree that must be in cache, used
3821
3579
as a basis for delta when no other base is available
3822
3580
: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
3581
:return: The revision_id of the last converted tree. The RevisionTree
3826
3582
for it will be in cache
3833
3589
pending_deltas = []
3834
3590
pending_revisions = []
3835
3591
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
3592
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
3593
current_revision_id = tree.get_revision_id()
3842
3594
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
3595
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3851
revision = self.source.get_revision(current_revision_id)
3852
pending_deltas.append((basis_id, delta,
3853
current_revision_id, revision.parent_ids))
3854
3597
if self._converting_to_rich_root:
3855
3598
self._revision_id_to_root_id[current_revision_id] = \
3856
3599
tree.get_root_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()
3600
# Find text entries that need to be copied
3860
3601
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)
3602
if new_path is not None:
3605
if not self.target.supports_rich_root():
3606
# The target doesn't support rich root, so we don't
3609
if self._converting_to_rich_root:
3610
# This can't be copied normally, we have to insert
3612
root_keys_to_create.add((file_id, entry.revision))
3614
text_keys.add((file_id, entry.revision))
3615
revision = self.source.get_revision(current_revision_id)
3616
pending_deltas.append((basis_id, delta,
3617
current_revision_id, revision.parent_ids))
3888
3618
pending_revisions.append(revision)
3889
3619
cache[current_revision_id] = tree
3890
3620
basis_id = current_revision_id
3891
self.source._safe_to_return_from_cache = False
3892
3621
# Copy file texts
3893
3622
from_texts = self.source.texts
3894
3623
to_texts = self.target.texts
3895
3624
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)
3625
root_stream = self._new_root_data_stream(root_keys_to_create,
3899
3627
to_texts.insert_record_stream(root_stream)
3900
3628
to_texts.insert_record_stream(from_texts.get_record_stream(
3901
3629
text_keys, self.target._format._fetch_order,
4350
4034
# missing keys can handle suspending a write group).
4351
4035
write_group_tokens = self.target_repo.suspend_write_group()
4352
4036
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)
4037
self.target_repo.commit_write_group()
4357
4038
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,
4040
def _extract_and_insert_inventories(self, substream, serializer):
4380
4041
"""Generate a new inventory versionedfile in target, converting data.
4382
4043
The inventory is retrieved from the source, (deserializing it), and
4383
4044
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
4046
for record in substream:
4388
# It's not a delta, so it must be a fulltext in the source
4389
# serializer's format.
4390
4047
bytes = record.get_bytes_as('fulltext')
4391
4048
revision_id = record.key[0]
4392
4049
inv = serializer.read_inventory_from_string(bytes, revision_id)
4393
4050
parents = [key[0] for key in record.parents]
4394
4051
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
4053
def _extract_and_insert_revisions(self, substream, serializer):
4400
4054
for record in substream:
4563
4212
return (not self.from_repository._format.rich_root_data and
4564
4213
self.to_format.rich_root_data)
4566
def _get_inventory_stream(self, revision_ids, missing=False):
4215
def _get_inventory_stream(self, revision_ids):
4567
4216
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,
4217
if (from_format.supports_chks and self.to_format.supports_chks
4218
and (from_format._serializer == self.to_format._serializer)):
4219
# Both sides support chks, and they use the same serializer, so it
4220
# is safe to transmit the chk pages and inventory pages across
4222
return self._get_chk_inventory_stream(revision_ids)
4223
elif (not from_format.supports_chks):
4224
# Source repository doesn't support chks. So we can transmit the
4225
# inventories 'as-is' and either they are just accepted on the
4226
# target, or the Sink will properly convert it.
4227
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)
4229
# XXX: Hack to make not-chk->chk fetch: copy the inventories as
4230
# inventories. Note that this should probably be done somehow
4231
# as part of bzrlib.repository.StreamSink. Except JAM couldn't
4232
# figure out how a non-chk repository could possibly handle
4233
# deserializing an inventory stream from a chk repo, as it
4234
# doesn't have a way to understand individual pages.
4235
return self._get_convertable_inventory_stream(revision_ids)
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.
4237
def _get_simple_inventory_stream(self, revision_ids):
4593
4238
from_weave = self.from_repository.inventories
4595
delta_closure = True
4597
delta_closure = not self.delta_on_metadata()
4598
4239
yield ('inventories', from_weave.get_record_stream(
4599
4240
[(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.
4241
self.inventory_fetch_order(),
4242
not self.delta_on_metadata()))
4244
def _get_chk_inventory_stream(self, revision_ids):
4245
"""Fetch the inventory texts, along with the associated chk maps."""
4246
# We want an inventory outside of the search set, so that we can filter
4247
# out uninteresting chk pages. For now we use
4248
# _find_revision_outside_set, but if we had a Search with cut_revs, we
4249
# could use that instead.
4250
start_rev_id = self.from_repository._find_revision_outside_set(
4252
start_rev_key = (start_rev_id,)
4253
inv_keys_to_fetch = [(rev_id,) for rev_id in revision_ids]
4254
if start_rev_id != _mod_revision.NULL_REVISION:
4255
inv_keys_to_fetch.append((start_rev_id,))
4256
# Any repo that supports chk_bytes must also support out-of-order
4257
# insertion. At least, that is how we expect it to work
4258
# We use get_record_stream instead of iter_inventories because we want
4259
# to be able to insert the stream as well. We could instead fetch
4260
# allowing deltas, and then iter_inventories, but we don't know whether
4261
# source or target is more 'local' anway.
4262
inv_stream = self.from_repository.inventories.get_record_stream(
4263
inv_keys_to_fetch, 'unordered',
4264
True) # We need them as full-texts so we can find their references
4265
uninteresting_chk_roots = set()
4266
interesting_chk_roots = set()
4267
def filter_inv_stream(inv_stream):
4268
for idx, record in enumerate(inv_stream):
4269
### child_pb.update('fetch inv', idx, len(inv_keys_to_fetch))
4270
bytes = record.get_bytes_as('fulltext')
4271
chk_inv = inventory.CHKInventory.deserialise(
4272
self.from_repository.chk_bytes, bytes, record.key)
4273
if record.key == start_rev_key:
4274
uninteresting_chk_roots.add(chk_inv.id_to_entry.key())
4275
p_id_map = chk_inv.parent_id_basename_to_file_id
4276
if p_id_map is not None:
4277
uninteresting_chk_roots.add(p_id_map.key())
4280
interesting_chk_roots.add(chk_inv.id_to_entry.key())
4281
p_id_map = chk_inv.parent_id_basename_to_file_id
4282
if p_id_map is not None:
4283
interesting_chk_roots.add(p_id_map.key())
4284
### pb.update('fetch inventory', 0, 2)
4285
yield ('inventories', filter_inv_stream(inv_stream))
4286
# Now that we have worked out all of the interesting root nodes, grab
4287
# all of the interesting pages and insert them
4288
### pb.update('fetch inventory', 1, 2)
4289
interesting = chk_map.iter_interesting_nodes(
4290
self.from_repository.chk_bytes, interesting_chk_roots,
4291
uninteresting_chk_roots)
4292
def to_stream_adapter():
4293
"""Adapt the iter_interesting_nodes result to a single stream.
4295
iter_interesting_nodes returns records as it processes them, along
4296
with keys. However, we only want to return the records themselves.
4298
for record, items in interesting:
4299
if record is not None:
4301
# XXX: We could instead call get_record_stream(records.keys())
4302
# ATM, this will always insert the records as fulltexts, and
4303
# requires that you can hang on to records once you have gone
4304
# on to the next one. Further, it causes the target to
4305
# recompress the data. Testing shows it to be faster than
4306
# requesting the records again, though.
4307
yield ('chk_bytes', to_stream_adapter())
4308
### pb.update('fetch inventory', 2, 2)
4310
def _get_convertable_inventory_stream(self, revision_ids):
4311
# XXX: One of source or target is using chks, and they don't have
4312
# compatible serializations. The StreamSink code expects to be
4313
# able to convert on the target, so we need to put
4314
# bytes-on-the-wire that can be converted
4315
yield ('inventories', self._stream_invs_as_fulltexts(revision_ids))
4317
def _stream_invs_as_fulltexts(self, revision_ids):
4624
4318
from_repo = self.from_repository
4319
from_serializer = from_repo._format._serializer
4625
4320
revision_keys = [(rev_id,) for rev_id in revision_ids]
4626
4321
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:
4322
for inv in self.from_repository.iter_inventories(revision_ids):
4323
# XXX: This is a bit hackish, but it works. Basically,
4324
# CHKSerializer 'accidentally' supports
4325
# read/write_inventory_to_string, even though that is never
4326
# the format that is stored on disk. It *does* give us a
4327
# single string representation for an inventory, so live with
4329
# This would be far better if we had a 'serialized inventory
4330
# delta' form. Then we could use 'inventory._make_delta', and
4331
# transmit that. This would both be faster to generate, and
4332
# result in fewer bytes-on-the-wire.
4333
as_bytes = from_serializer.write_inventory_to_string(inv)
4643
4334
key = (inv.revision_id,)
4644
4335
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
4336
yield versionedfile.FulltextContentFactory(
4677
key, parent_keys, None, delta_serialized)
4337
key, parent_keys, None, as_bytes)
4680
4340
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
added
removed
bzrlib/repository.py
