548
492
ie.revision = parent_entry.revision
549
493
return self._get_delta(ie, basis_inv, path), False, None
550
494
ie.reference_revision = content_summary[3]
551
if ie.reference_revision is None:
552
raise AssertionError("invalid content_summary for nested tree: %r"
553
% (content_summary,))
554
self._add_text_to_weave(ie.file_id, '', heads, None)
496
self._add_text_to_weave(ie.file_id, lines, heads, None)
556
498
raise NotImplementedError('unknown kind')
557
499
ie.revision = self._new_revision_id
558
self._any_changes = True
559
500
return self._get_delta(ie, basis_inv, path), True, fingerprint
561
def record_iter_changes(self, tree, basis_revision_id, iter_changes,
562
_entry_factory=entry_factory):
563
"""Record a new tree via iter_changes.
565
:param tree: The tree to obtain text contents from for changed objects.
566
:param basis_revision_id: The revision id of the tree the iter_changes
567
has been generated against. Currently assumed to be the same
568
as self.parents[0] - if it is not, errors may occur.
569
:param iter_changes: An iter_changes iterator with the changes to apply
570
to basis_revision_id. The iterator must not include any items with
571
a current kind of None - missing items must be either filtered out
572
or errored-on beefore record_iter_changes sees the item.
573
:param _entry_factory: Private method to bind entry_factory locally for
575
:return: A generator of (file_id, relpath, fs_hash) tuples for use with
578
# Create an inventory delta based on deltas between all the parents and
579
# deltas between all the parent inventories. We use inventory delta's
580
# between the inventory objects because iter_changes masks
581
# last-changed-field only changes.
583
# file_id -> change map, change is fileid, paths, changed, versioneds,
584
# parents, names, kinds, executables
586
# {file_id -> revision_id -> inventory entry, for entries in parent
587
# trees that are not parents[0]
591
revtrees = list(self.repository.revision_trees(self.parents))
592
except errors.NoSuchRevision:
593
# one or more ghosts, slow path.
595
for revision_id in self.parents:
597
revtrees.append(self.repository.revision_tree(revision_id))
598
except errors.NoSuchRevision:
600
basis_revision_id = _mod_revision.NULL_REVISION
602
revtrees.append(self.repository.revision_tree(
603
_mod_revision.NULL_REVISION))
604
# The basis inventory from a repository
606
basis_inv = revtrees[0].inventory
608
basis_inv = self.repository.revision_tree(
609
_mod_revision.NULL_REVISION).inventory
610
if len(self.parents) > 0:
611
if basis_revision_id != self.parents[0] and not ghost_basis:
613
"arbitrary basis parents not yet supported with merges")
614
for revtree in revtrees[1:]:
615
for change in revtree.inventory._make_delta(basis_inv):
616
if change[1] is None:
617
# Not present in this parent.
619
if change[2] not in merged_ids:
620
if change[0] is not None:
621
basis_entry = basis_inv[change[2]]
622
merged_ids[change[2]] = [
624
basis_entry.revision,
627
parent_entries[change[2]] = {
629
basis_entry.revision:basis_entry,
631
change[3].revision:change[3],
634
merged_ids[change[2]] = [change[3].revision]
635
parent_entries[change[2]] = {change[3].revision:change[3]}
637
merged_ids[change[2]].append(change[3].revision)
638
parent_entries[change[2]][change[3].revision] = change[3]
641
# Setup the changes from the tree:
642
# changes maps file_id -> (change, [parent revision_ids])
644
for change in iter_changes:
645
# This probably looks up in basis_inv way to much.
646
if change[1][0] is not None:
647
head_candidate = [basis_inv[change[0]].revision]
650
changes[change[0]] = change, merged_ids.get(change[0],
652
unchanged_merged = set(merged_ids) - set(changes)
653
# Extend the changes dict with synthetic changes to record merges of
655
for file_id in unchanged_merged:
656
# Record a merged version of these items that did not change vs the
657
# basis. This can be either identical parallel changes, or a revert
658
# of a specific file after a merge. The recorded content will be
659
# that of the current tree (which is the same as the basis), but
660
# the per-file graph will reflect a merge.
661
# NB:XXX: We are reconstructing path information we had, this
662
# should be preserved instead.
663
# inv delta change: (file_id, (path_in_source, path_in_target),
664
# changed_content, versioned, parent, name, kind,
667
basis_entry = basis_inv[file_id]
668
except errors.NoSuchId:
669
# a change from basis->some_parents but file_id isn't in basis
670
# so was new in the merge, which means it must have changed
671
# from basis -> current, and as it hasn't the add was reverted
672
# by the user. So we discard this change.
676
(basis_inv.id2path(file_id), tree.id2path(file_id)),
678
(basis_entry.parent_id, basis_entry.parent_id),
679
(basis_entry.name, basis_entry.name),
680
(basis_entry.kind, basis_entry.kind),
681
(basis_entry.executable, basis_entry.executable))
682
changes[file_id] = (change, merged_ids[file_id])
683
# changes contains tuples with the change and a set of inventory
684
# candidates for the file.
686
# old_path, new_path, file_id, new_inventory_entry
687
seen_root = False # Is the root in the basis delta?
688
inv_delta = self._basis_delta
689
modified_rev = self._new_revision_id
690
for change, head_candidates in changes.values():
691
if change[3][1]: # versioned in target.
692
# Several things may be happening here:
693
# We may have a fork in the per-file graph
694
# - record a change with the content from tree
695
# We may have a change against < all trees
696
# - carry over the tree that hasn't changed
697
# We may have a change against all trees
698
# - record the change with the content from tree
701
entry = _entry_factory[kind](file_id, change[5][1],
703
head_set = self._heads(change[0], set(head_candidates))
706
for head_candidate in head_candidates:
707
if head_candidate in head_set:
708
heads.append(head_candidate)
709
head_set.remove(head_candidate)
712
# Could be a carry-over situation:
713
parent_entry_revs = parent_entries.get(file_id, None)
714
if parent_entry_revs:
715
parent_entry = parent_entry_revs.get(heads[0], None)
718
if parent_entry is None:
719
# The parent iter_changes was called against is the one
720
# that is the per-file head, so any change is relevant
721
# iter_changes is valid.
722
carry_over_possible = False
724
# could be a carry over situation
725
# A change against the basis may just indicate a merge,
726
# we need to check the content against the source of the
727
# merge to determine if it was changed after the merge
729
if (parent_entry.kind != entry.kind or
730
parent_entry.parent_id != entry.parent_id or
731
parent_entry.name != entry.name):
732
# Metadata common to all entries has changed
733
# against per-file parent
734
carry_over_possible = False
736
carry_over_possible = True
737
# per-type checks for changes against the parent_entry
740
# Cannot be a carry-over situation
741
carry_over_possible = False
742
# Populate the entry in the delta
744
# XXX: There is still a small race here: If someone reverts the content of a file
745
# after iter_changes examines and decides it has changed,
746
# we will unconditionally record a new version even if some
747
# other process reverts it while commit is running (with
748
# the revert happening after iter_changes did it's
751
entry.executable = True
753
entry.executable = False
754
if (carry_over_possible and
755
parent_entry.executable == entry.executable):
756
# Check the file length, content hash after reading
758
nostore_sha = parent_entry.text_sha1
761
file_obj, stat_value = tree.get_file_with_stat(file_id, change[1][1])
763
text = file_obj.read()
767
entry.text_sha1, entry.text_size = self._add_text_to_weave(
768
file_id, text, heads, nostore_sha)
769
yield file_id, change[1][1], (entry.text_sha1, stat_value)
770
except errors.ExistingContent:
771
# No content change against a carry_over parent
772
# Perhaps this should also yield a fs hash update?
774
entry.text_size = parent_entry.text_size
775
entry.text_sha1 = parent_entry.text_sha1
776
elif kind == 'symlink':
778
entry.symlink_target = tree.get_symlink_target(file_id)
779
if (carry_over_possible and
780
parent_entry.symlink_target == entry.symlink_target):
783
self._add_text_to_weave(change[0], '', heads, None)
784
elif kind == 'directory':
785
if carry_over_possible:
788
# Nothing to set on the entry.
789
# XXX: split into the Root and nonRoot versions.
790
if change[1][1] != '' or self.repository.supports_rich_root():
791
self._add_text_to_weave(change[0], '', heads, None)
792
elif kind == 'tree-reference':
793
if not self.repository._format.supports_tree_reference:
794
# This isn't quite sane as an error, but we shouldn't
795
# ever see this code path in practice: tree's don't
796
# permit references when the repo doesn't support tree
798
raise errors.UnsupportedOperation(tree.add_reference,
800
reference_revision = tree.get_reference_revision(change[0])
801
entry.reference_revision = reference_revision
802
if (carry_over_possible and
803
parent_entry.reference_revision == reference_revision):
806
self._add_text_to_weave(change[0], '', heads, None)
808
raise AssertionError('unknown kind %r' % kind)
810
entry.revision = modified_rev
812
entry.revision = parent_entry.revision
815
new_path = change[1][1]
816
inv_delta.append((change[1][0], new_path, change[0], entry))
819
self.new_inventory = None
821
# This should perhaps be guarded by a check that the basis we
822
# commit against is the basis for the commit and if not do a delta
824
self._any_changes = True
826
# housekeeping root entry changes do not affect no-change commits.
827
self._require_root_change(tree)
828
self.basis_delta_revision = basis_revision_id
830
def _add_text_to_weave(self, file_id, new_text, parents, nostore_sha):
831
parent_keys = tuple([(file_id, parent) for parent in parents])
832
return self.repository.texts._add_text(
833
(file_id, self._new_revision_id), parent_keys, new_text,
834
nostore_sha=nostore_sha, random_id=self.random_revid)[0:2]
502
def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
503
# Note: as we read the content directly from the tree, we know its not
504
# been turned into unicode or badly split - but a broken tree
505
# implementation could give us bad output from readlines() so this is
506
# not a guarantee of safety. What would be better is always checking
507
# the content during test suite execution. RBC 20070912
508
parent_keys = tuple((file_id, parent) for parent in parents)
509
return self.repository.texts.add_lines(
510
(file_id, self._new_revision_id), parent_keys, new_lines,
511
nostore_sha=nostore_sha, random_id=self.random_revid,
512
check_content=False)[0:2]
837
515
class RootCommitBuilder(CommitBuilder):
1181
797
# The old API returned a list, should this actually be a set?
1182
798
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
801
def create(a_bzrdir):
1299
802
"""Construct the current default format repository in a_bzrdir."""
1319
823
self._reconcile_does_inventory_gc = True
1320
824
self._reconcile_fixes_text_parents = False
1321
825
self._reconcile_backsup_inventory = True
826
# not right yet - should be more semantically clear ?
828
# TODO: make sure to construct the right store classes, etc, depending
829
# on whether escaping is required.
830
self._warn_if_deprecated()
1322
831
self._write_group = None
1323
832
# Additional places to query for data.
1324
833
self._fallback_repositories = []
834
# What order should fetch operations request streams in?
835
# The default is unordered as that is the cheapest for an origin to
837
self._fetch_order = 'unordered'
838
# Does this repository use deltas that can be fetched as-deltas ?
839
# (E.g. knits, where the knit deltas can be transplanted intact.
840
# We default to False, which will ensure that enough data to get
841
# a full text out of any fetch stream will be grabbed.
842
self._fetch_uses_deltas = False
843
# Should fetch trigger a reconcile after the fetch? Only needed for
844
# some repository formats that can suffer internal inconsistencies.
845
self._fetch_reconcile = False
1325
846
# An InventoryEntry cache, used during deserialization
1326
847
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1327
# Is it safe to return inventory entries directly from the entry cache,
1328
# rather copying them?
1329
self._safe_to_return_from_cache = False
1332
def user_transport(self):
1333
return self.bzrdir.user_transport
1336
def control_transport(self):
1337
return self._transport
1339
849
def __repr__(self):
1340
if self._fallback_repositories:
1341
return '%s(%r, fallback_repositories=%r)' % (
1342
self.__class__.__name__,
1344
self._fallback_repositories)
1346
return '%s(%r)' % (self.__class__.__name__,
1349
def _has_same_fallbacks(self, other_repo):
1350
"""Returns true if the repositories have the same fallbacks."""
1351
my_fb = self._fallback_repositories
1352
other_fb = other_repo._fallback_repositories
1353
if len(my_fb) != len(other_fb):
1355
for f, g in zip(my_fb, other_fb):
1356
if not f.has_same_location(g):
850
return '%s(%r)' % (self.__class__.__name__,
1360
853
def has_same_location(self, other):
1361
854
"""Returns a boolean indicating if this repository is at the same
1598
1097
def suspend_write_group(self):
1599
1098
raise errors.UnsuspendableWriteGroup(self)
1601
def get_missing_parent_inventories(self, check_for_missing_texts=True):
1602
"""Return the keys of missing inventory parents for revisions added in
1605
A revision is not complete if the inventory delta for that revision
1606
cannot be calculated. Therefore if the parent inventories of a
1607
revision are not present, the revision is incomplete, and e.g. cannot
1608
be streamed by a smart server. This method finds missing inventory
1609
parents for revisions added in this write group.
1611
if not self._format.supports_external_lookups:
1612
# This is only an issue for stacked repositories
1614
if not self.is_in_write_group():
1615
raise AssertionError('not in a write group')
1617
# XXX: We assume that every added revision already has its
1618
# corresponding inventory, so we only check for parent inventories that
1619
# might be missing, rather than all inventories.
1620
parents = set(self.revisions._index.get_missing_parents())
1621
parents.discard(_mod_revision.NULL_REVISION)
1622
unstacked_inventories = self.inventories._index
1623
present_inventories = unstacked_inventories.get_parent_map(
1624
key[-1:] for key in parents)
1625
parents.difference_update(present_inventories)
1626
if len(parents) == 0:
1627
# No missing parent inventories.
1629
if not check_for_missing_texts:
1630
return set(('inventories', rev_id) for (rev_id,) in parents)
1631
# Ok, now we have a list of missing inventories. But these only matter
1632
# if the inventories that reference them are missing some texts they
1633
# appear to introduce.
1634
# XXX: Texts referenced by all added inventories need to be present,
1635
# but at the moment we're only checking for texts referenced by
1636
# inventories at the graph's edge.
1637
key_deps = self.revisions._index._key_dependencies
1638
key_deps.satisfy_refs_for_keys(present_inventories)
1639
referrers = frozenset(r[0] for r in key_deps.get_referrers())
1640
file_ids = self.fileids_altered_by_revision_ids(referrers)
1641
missing_texts = set()
1642
for file_id, version_ids in file_ids.iteritems():
1643
missing_texts.update(
1644
(file_id, version_id) for version_id in version_ids)
1645
present_texts = self.texts.get_parent_map(missing_texts)
1646
missing_texts.difference_update(present_texts)
1647
if not missing_texts:
1648
# No texts are missing, so all revisions and their deltas are
1651
# Alternatively the text versions could be returned as the missing
1652
# keys, but this is likely to be less data.
1653
missing_keys = set(('inventories', rev_id) for (rev_id,) in parents)
1656
def refresh_data(self):
1657
"""Re-read any data needed to to synchronise with disk.
1659
This method is intended to be called after another repository instance
1660
(such as one used by a smart server) has inserted data into the
1661
repository. It may not be called during a write group, but may be
1662
called at any other time.
1664
if self.is_in_write_group():
1665
raise errors.InternalBzrError(
1666
"May not refresh_data while in a write group.")
1667
self._refresh_data()
1669
1100
def resume_write_group(self, tokens):
1670
1101
if not self.is_write_locked():
1671
1102
raise errors.NotWriteLocked(self)
1880
1278
@needs_read_lock
1881
1279
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.
1280
"""Get many revisions at once."""
1887
1281
return self._get_revisions(revision_ids)
1889
1283
@needs_read_lock
1890
1284
def _get_revisions(self, revision_ids):
1891
1285
"""Core work logic to get many revisions without sanity checks."""
1286
for rev_id in revision_ids:
1287
if not rev_id or not isinstance(rev_id, basestring):
1288
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1289
keys = [(key,) for key in revision_ids]
1290
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)
1292
for record in stream:
1293
if record.storage_kind == 'absent':
1294
raise errors.NoSuchRevision(self, record.key[0])
1295
text = record.get_bytes_as('fulltext')
1296
rev = self._serializer.read_revision_from_string(text)
1297
revs[record.key[0]] = rev
1897
1298
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)
1926
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1301
def get_revision_xml(self, revision_id):
1302
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1303
# would have already do it.
1304
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1305
rev = self.get_revision(revision_id)
1306
rev_tmp = cStringIO.StringIO()
1307
# the current serializer..
1308
self._serializer.write_revision(rev, rev_tmp)
1310
return rev_tmp.getvalue()
1312
def get_deltas_for_revisions(self, revisions):
1927
1313
"""Produce a generator of revision deltas.
1929
1315
Note that the input is a sequence of REVISIONS, not revision_ids.
1930
1316
Trees will be held in memory until the generator exits.
1931
1317
Each delta is relative to the revision's lefthand predecessor.
1933
:param specific_fileids: if not None, the result is filtered
1934
so that only those file-ids, their parents and their
1935
children are included.
1937
# Get the revision-ids of interest
1938
1319
required_trees = set()
1939
1320
for revision in revisions:
1940
1321
required_trees.add(revision.revision_id)
1941
1322
required_trees.update(revision.parent_ids[:1])
1943
# Get the matching filtered trees. Note that it's more
1944
# efficient to pass filtered trees to changes_from() rather
1945
# than doing the filtering afterwards. changes_from() could
1946
# arguably do the filtering itself but it's path-based, not
1947
# file-id based, so filtering before or afterwards is
1949
if specific_fileids is None:
1950
trees = dict((t.get_revision_id(), t) for
1951
t in self.revision_trees(required_trees))
1953
trees = dict((t.get_revision_id(), t) for
1954
t in self._filtered_revision_trees(required_trees,
1957
# Calculate the deltas
1323
trees = dict((t.get_revision_id(), t) for
1324
t in self.revision_trees(required_trees))
1958
1325
for revision in revisions:
1959
1326
if not revision.parent_ids:
1960
1327
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
2084
1449
result[key] = True
2087
def _inventory_xml_lines_for_keys(self, keys):
2088
"""Get a line iterator of the sort needed for findind references.
2090
Not relevant for non-xml inventory repositories.
2092
Ghosts in revision_keys are ignored.
2094
:param revision_keys: The revision keys for the inventories to inspect.
2095
:return: An iterator over (inventory line, revid) for the fulltexts of
2096
all of the xml inventories specified by revision_keys.
2098
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2099
for record in stream:
2100
if record.storage_kind != 'absent':
2101
chunks = record.get_bytes_as('chunked')
2102
revid = record.key[-1]
2103
lines = osutils.chunks_to_lines(chunks)
2107
1452
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
2109
1454
"""Helper routine for fileids_altered_by_revision_ids.
2111
1456
This performs the translation of xml lines to revision ids.
2113
1458
:param line_iterator: An iterator of lines, origin_version_id
2114
:param revision_keys: The revision ids to filter for. This should be a
1459
:param revision_ids: The revision ids to filter for. This should be a
2115
1460
set or other type which supports efficient __contains__ lookups, as
2116
the revision key from each parsed line will be looked up in the
2117
revision_keys filter.
1461
the revision id from each parsed line will be looked up in the
1462
revision_ids filter.
2118
1463
:return: a dictionary mapping altered file-ids to an iterable of
2119
1464
revision_ids. Each altered file-ids has the exact revision_ids that
2120
1465
altered it listed explicitly.
2122
seen = set(self._find_text_key_references_from_xml_inventory_lines(
2123
line_iterator).iterkeys())
2124
parent_keys = self._find_parent_keys_of_revisions(revision_keys)
2125
parent_seen = set(self._find_text_key_references_from_xml_inventory_lines(
2126
self._inventory_xml_lines_for_keys(parent_keys)))
2127
new_keys = seen - parent_seen
2129
1468
setdefault = result.setdefault
2130
for key in new_keys:
2131
setdefault(key[0], set()).add(key[-1])
1470
self._find_text_key_references_from_xml_inventory_lines(
1471
line_iterator).iterkeys():
1472
# once data is all ensured-consistent; then this is
1473
# if revision_id == version_id
1474
if key[-1:] in revision_ids:
1475
setdefault(key[0], set()).add(key[-1])
2134
def _find_parent_ids_of_revisions(self, revision_ids):
2135
"""Find all parent ids that are mentioned in the revision graph.
2137
:return: set of revisions that are parents of revision_ids which are
2138
not part of revision_ids themselves
2140
parent_map = self.get_parent_map(revision_ids)
2142
map(parent_ids.update, parent_map.itervalues())
2143
parent_ids.difference_update(revision_ids)
2144
parent_ids.discard(_mod_revision.NULL_REVISION)
2147
def _find_parent_keys_of_revisions(self, revision_keys):
2148
"""Similar to _find_parent_ids_of_revisions, but used with keys.
2150
:param revision_keys: An iterable of revision_keys.
2151
:return: The parents of all revision_keys that are not already in
2154
parent_map = self.revisions.get_parent_map(revision_keys)
2156
map(parent_keys.update, parent_map.itervalues())
2157
parent_keys.difference_update(revision_keys)
2158
parent_keys.discard(_mod_revision.NULL_REVISION)
2161
1478
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
2162
1479
"""Find the file ids and versions affected by revisions.
2367
1681
"""Get Inventory object by revision id."""
2368
1682
return self.iter_inventories([revision_id]).next()
2370
def iter_inventories(self, revision_ids, ordering=None):
1684
def iter_inventories(self, revision_ids):
2371
1685
"""Get many inventories by revision_ids.
2373
1687
This will buffer some or all of the texts used in constructing the
2374
1688
inventories in memory, but will only parse a single inventory at a
2377
: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
1691
:return: An iterator of inventories.
2383
1693
if ((None in revision_ids)
2384
1694
or (_mod_revision.NULL_REVISION in revision_ids)):
2385
1695
raise ValueError('cannot get null revision inventory')
2386
return self._iter_inventories(revision_ids, ordering)
1696
return self._iter_inventories(revision_ids)
2388
def _iter_inventories(self, revision_ids, ordering):
1698
def _iter_inventories(self, revision_ids):
2389
1699
"""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)
1700
for text, revision_id in self._iter_inventory_xmls(revision_ids):
1701
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
1703
def _iter_inventory_xmls(self, revision_ids):
2400
1704
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)
1705
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2407
1706
text_chunks = {}
2408
1707
for record in stream:
2409
1708
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]
1709
text_chunks[record.key] = record.get_bytes_as('chunked')
2416
1711
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
1713
chunks = text_chunks.pop(key)
1714
yield ''.join(chunks), key[-1]
2430
def _deserialise_inventory(self, revision_id, xml):
1716
def deserialise_inventory(self, revision_id, xml):
2431
1717
"""Transform the xml into an inventory object.
2433
1719
:param revision_id: The expected revision id of the inventory.
2434
1720
:param xml: A serialised inventory.
2436
1722
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)
1723
entry_cache=self._inventory_entry_cache)
2439
1724
if result.revision_id != revision_id:
2440
1725
raise AssertionError('revision id mismatch %s != %s' % (
2441
1726
result.revision_id, revision_id))
1729
def serialise_inventory(self, inv):
1730
return self._serializer.write_inventory_to_string(inv)
1732
def _serialise_inventory_to_lines(self, inv):
1733
return self._serializer.write_inventory_to_lines(inv)
2444
1735
def get_serializer_format(self):
2445
1736
return self._serializer.format_num
2447
1738
@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')
1739
def get_inventory_xml(self, revision_id):
1740
"""Get inventory XML as a file object."""
1741
texts = self._iter_inventory_xmls([revision_id])
2452
1743
text, revision_id = texts.next()
2453
1744
except StopIteration:
2454
1745
raise errors.HistoryMissing(self, 'inventory', revision_id)
2457
def get_rev_id_for_revno(self, revno, known_pair):
2458
"""Return the revision id of a revno, given a later (revno, revid)
2459
pair in the same history.
2461
:return: if found (True, revid). If the available history ran out
2462
before reaching the revno, then this returns
2463
(False, (closest_revno, closest_revid)).
1749
def get_inventory_sha1(self, revision_id):
1750
"""Return the sha1 hash of the inventory entry
2465
known_revno, known_revid = known_pair
2466
partial_history = [known_revid]
2467
distance_from_known = known_revno - revno
2468
if distance_from_known < 0:
2470
'requested revno (%d) is later than given known revno (%d)'
2471
% (revno, known_revno))
2474
self, partial_history, stop_index=distance_from_known)
2475
except errors.RevisionNotPresent, err:
2476
if err.revision_id == known_revid:
2477
# The start revision (known_revid) wasn't found.
2479
# This is a stacked repository with no fallbacks, or a there's a
2480
# left-hand ghost. Either way, even though the revision named in
2481
# the error isn't in this repo, we know it's the next step in this
2482
# left-hand history.
2483
partial_history.append(err.revision_id)
2484
if len(partial_history) <= distance_from_known:
2485
# Didn't find enough history to get a revid for the revno.
2486
earliest_revno = known_revno - len(partial_history) + 1
2487
return (False, (earliest_revno, partial_history[-1]))
2488
if len(partial_history) - 1 > distance_from_known:
2489
raise AssertionError('_iter_for_revno returned too much history')
2490
return (True, partial_history[-1])
1752
return self.get_revision(revision_id).inventory_sha1
2492
1754
def iter_reverse_revision_history(self, revision_id):
2493
1755
"""Iterate backwards through revision ids in the lefthand history
3388
2549
InterRepository.get(other).method_name(parameters).
3391
_walk_to_common_revisions_batch_size = 50
2552
_walk_to_common_revisions_batch_size = 1
3392
2553
_optimisers = []
3393
2554
"""The available optimised InterRepository types."""
2556
def __init__(self, source, target):
2557
InterObject.__init__(self, source, target)
2558
# These two attributes may be overridden by e.g. InterOtherToRemote to
2559
# provide a faster implementation.
2560
self.target_get_graph = self.target.get_graph
2561
self.target_get_parent_map = self.target.get_parent_map
3396
2563
def copy_content(self, revision_id=None):
3397
"""Make a complete copy of the content in self into destination.
3399
This is a destructive operation! Do not use it on existing
3402
:param revision_id: Only copy the content needed to construct
3403
revision_id and its parents.
3406
self.target.set_make_working_trees(self.source.make_working_trees())
3407
except NotImplementedError:
3409
self.target.fetch(self.source, revision_id=revision_id)
3412
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
2564
raise NotImplementedError(self.copy_content)
2566
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3414
2567
"""Fetch the content required to construct revision_id.
3416
2569
The content is copied from self.source to self.target.
3418
2571
:param revision_id: if None all content is copied, if NULL_REVISION no
3419
2572
content is copied.
2573
:param pb: optional progress bar to use for progress reports. If not
2574
provided a default one will be created.
2576
:returns: (copied_revision_count, failures).
3423
ui.ui_factory.warn_experimental_format_fetch(self)
3424
from bzrlib.fetch import RepoFetcher
3425
# See <https://launchpad.net/bugs/456077> asking for a warning here
3426
if self.source._format.network_name() != self.target._format.network_name():
3427
ui.ui_factory.show_user_warning('cross_format_fetch',
3428
from_format=self.source._format,
3429
to_format=self.target._format)
3430
f = RepoFetcher(to_repository=self.target,
3431
from_repository=self.source,
3432
last_revision=revision_id,
3433
fetch_spec=fetch_spec,
3434
find_ghosts=find_ghosts)
2578
# Normally we should find a specific InterRepository subclass to do
2579
# the fetch; if nothing else then at least InterSameDataRepository.
2580
# If none of them is suitable it looks like fetching is not possible;
2581
# we try to give a good message why. _assert_same_model will probably
2582
# give a helpful message; otherwise a generic one.
2583
self._assert_same_model(self.source, self.target)
2584
raise errors.IncompatibleRepositories(self.source, self.target,
2585
"no suitableInterRepository found")
3436
2587
def _walk_to_common_revisions(self, revision_ids):
3437
2588
"""Walk out from revision_ids in source to revisions target has.
3726
2959
return self.source.revision_ids_to_search_result(result_set)
3729
class InterDifferingSerializer(InterRepository):
2962
class InterPackRepo(InterSameDataRepository):
2963
"""Optimised code paths between Pack based repositories."""
2966
def _get_repo_format_to_test(self):
2967
from bzrlib.repofmt import pack_repo
2968
return pack_repo.RepositoryFormatKnitPack1()
2971
def is_compatible(source, target):
2972
"""Be compatible with known Pack formats.
2974
We don't test for the stores being of specific types because that
2975
could lead to confusing results, and there is no need to be
2978
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2980
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2981
isinstance(target._format, RepositoryFormatPack))
2982
except AttributeError:
2984
return are_packs and InterRepository._same_model(source, target)
2987
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2988
"""See InterRepository.fetch()."""
2989
if (len(self.source._fallback_repositories) > 0 or
2990
len(self.target._fallback_repositories) > 0):
2991
# The pack layer is not aware of fallback repositories, so when
2992
# fetching from a stacked repository or into a stacked repository
2993
# we use the generic fetch logic which uses the VersionedFiles
2994
# attributes on repository.
2995
from bzrlib.fetch import RepoFetcher
2996
fetcher = RepoFetcher(self.target, self.source, revision_id,
2998
return fetcher.count_copied, fetcher.failed_revisions
2999
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
3000
self.source, self.source._format, self.target, self.target._format)
3001
self.count_copied = 0
3002
if revision_id is None:
3004
# everything to do - use pack logic
3005
# to fetch from all packs to one without
3006
# inventory parsing etc, IFF nothing to be copied is in the target.
3008
source_revision_ids = frozenset(self.source.all_revision_ids())
3009
revision_ids = source_revision_ids - \
3010
frozenset(self.target_get_parent_map(source_revision_ids))
3011
revision_keys = [(revid,) for revid in revision_ids]
3012
target_pack_collection = self._get_target_pack_collection()
3013
index = target_pack_collection.revision_index.combined_index
3014
present_revision_ids = set(item[1][0] for item in
3015
index.iter_entries(revision_keys))
3016
revision_ids = set(revision_ids) - present_revision_ids
3017
# implementing the TODO will involve:
3018
# - detecting when all of a pack is selected
3019
# - avoiding as much as possible pre-selection, so the
3020
# more-core routines such as create_pack_from_packs can filter in
3021
# a just-in-time fashion. (though having a HEADS list on a
3022
# repository might make this a lot easier, because we could
3023
# sensibly detect 'new revisions' without doing a full index scan.
3024
elif _mod_revision.is_null(revision_id):
3029
revision_ids = self.search_missing_revision_ids(revision_id,
3030
find_ghosts=find_ghosts).get_keys()
3031
except errors.NoSuchRevision:
3032
raise errors.InstallFailed([revision_id])
3033
if len(revision_ids) == 0:
3035
return self._pack(self.source, self.target, revision_ids)
3037
def _pack(self, source, target, revision_ids):
3038
from bzrlib.repofmt.pack_repo import Packer
3039
target_pack_collection = self._get_target_pack_collection()
3040
packs = source._pack_collection.all_packs()
3041
pack = Packer(target_pack_collection, packs, '.fetch',
3042
revision_ids).pack()
3043
if pack is not None:
3044
target_pack_collection._save_pack_names()
3045
copied_revs = pack.get_revision_count()
3046
# Trigger an autopack. This may duplicate effort as we've just done
3047
# a pack creation, but for now it is simpler to think about as
3048
# 'upload data, then repack if needed'.
3050
return (copied_revs, [])
3054
def _autopack(self):
3055
self.target._pack_collection.autopack()
3057
def _get_target_pack_collection(self):
3058
return self.target._pack_collection
3061
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
3062
"""See InterRepository.missing_revision_ids().
3064
:param find_ghosts: Find ghosts throughout the ancestry of
3067
if not find_ghosts and revision_id is not None:
3068
return self._walk_to_common_revisions([revision_id])
3069
elif revision_id is not None:
3070
# Find ghosts: search for revisions pointing from one repository to
3071
# the other, and vice versa, anywhere in the history of revision_id.
3072
graph = self.target_get_graph(other_repository=self.source)
3073
searcher = graph._make_breadth_first_searcher([revision_id])
3077
next_revs, ghosts = searcher.next_with_ghosts()
3078
except StopIteration:
3080
if revision_id in ghosts:
3081
raise errors.NoSuchRevision(self.source, revision_id)
3082
found_ids.update(next_revs)
3083
found_ids.update(ghosts)
3084
found_ids = frozenset(found_ids)
3085
# Double query here: should be able to avoid this by changing the
3086
# graph api further.
3087
result_set = found_ids - frozenset(
3088
self.target_get_parent_map(found_ids))
3090
source_ids = self.source.all_revision_ids()
3091
# source_ids is the worst possible case we may need to pull.
3092
# now we want to filter source_ids against what we actually
3093
# have in target, but don't try to check for existence where we know
3094
# we do not have a revision as that would be pointless.
3095
target_ids = set(self.target.all_revision_ids())
3096
result_set = set(source_ids).difference(target_ids)
3097
return self.source.revision_ids_to_search_result(result_set)
3100
class InterModel1and2(InterRepository):
3103
def _get_repo_format_to_test(self):
3107
def is_compatible(source, target):
3108
if not source.supports_rich_root() and target.supports_rich_root():
3114
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3115
"""See InterRepository.fetch()."""
3116
from bzrlib.fetch import Model1toKnit2Fetcher
3117
f = Model1toKnit2Fetcher(to_repository=self.target,
3118
from_repository=self.source,
3119
last_revision=revision_id,
3120
pb=pb, find_ghosts=find_ghosts)
3121
return f.count_copied, f.failed_revisions
3124
def copy_content(self, revision_id=None):
3125
"""Make a complete copy of the content in self into destination.
3127
This is a destructive operation! Do not use it on existing
3130
:param revision_id: Only copy the content needed to construct
3131
revision_id and its parents.
3134
self.target.set_make_working_trees(self.source.make_working_trees())
3135
except NotImplementedError:
3137
# but don't bother fetching if we have the needed data now.
3138
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
3139
self.target.has_revision(revision_id)):
3141
self.target.fetch(self.source, revision_id=revision_id)
3144
class InterKnit1and2(InterKnitRepo):
3147
def _get_repo_format_to_test(self):
3151
def is_compatible(source, target):
3152
"""Be compatible with Knit1 source and Knit3 target"""
3154
from bzrlib.repofmt.knitrepo import (
3155
RepositoryFormatKnit1,
3156
RepositoryFormatKnit3,
3158
from bzrlib.repofmt.pack_repo import (
3159
RepositoryFormatKnitPack1,
3160
RepositoryFormatKnitPack3,
3161
RepositoryFormatKnitPack4,
3162
RepositoryFormatKnitPack5,
3163
RepositoryFormatKnitPack5RichRoot,
3164
RepositoryFormatKnitPack6,
3165
RepositoryFormatKnitPack6RichRoot,
3166
RepositoryFormatPackDevelopment2,
3167
RepositoryFormatPackDevelopment2Subtree,
3170
RepositoryFormatKnit1, # no rr, no subtree
3171
RepositoryFormatKnitPack1, # no rr, no subtree
3172
RepositoryFormatPackDevelopment2, # no rr, no subtree
3173
RepositoryFormatKnitPack5, # no rr, no subtree
3174
RepositoryFormatKnitPack6, # no rr, no subtree
3177
RepositoryFormatKnit3, # rr, subtree
3178
RepositoryFormatKnitPack3, # rr, subtree
3179
RepositoryFormatKnitPack4, # rr, no subtree
3180
RepositoryFormatKnitPack5RichRoot,# rr, no subtree
3181
RepositoryFormatKnitPack6RichRoot,# rr, no subtree
3182
RepositoryFormatPackDevelopment2Subtree, # rr, subtree
3184
for format in norichroot:
3185
if format.rich_root_data:
3186
raise AssertionError('Format %s is a rich-root format'
3187
' but is included in the non-rich-root list'
3189
for format in richroot:
3190
if not format.rich_root_data:
3191
raise AssertionError('Format %s is not a rich-root format'
3192
' but is included in the rich-root list'
3194
# TODO: One alternative is to just check format.rich_root_data,
3195
# instead of keeping membership lists. However, the formats
3196
# *also* have to use the same 'Knit' style of storage
3197
# (line-deltas, fulltexts, etc.)
3198
return (isinstance(source._format, norichroot) and
3199
isinstance(target._format, richroot))
3200
except AttributeError:
3204
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3205
"""See InterRepository.fetch()."""
3206
from bzrlib.fetch import Knit1to2Fetcher
3207
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
3208
self.source, self.source._format, self.target,
3209
self.target._format)
3210
f = Knit1to2Fetcher(to_repository=self.target,
3211
from_repository=self.source,
3212
last_revision=revision_id,
3213
pb=pb, find_ghosts=find_ghosts)
3214
return f.count_copied, f.failed_revisions
3217
class InterDifferingSerializer(InterKnitRepo):
3732
3220
def _get_repo_format_to_test(self):
3736
3224
def is_compatible(source, target):
3737
3225
"""Be compatible with Knit2 source and Knit3 target"""
3738
# This is redundant with format.check_conversion_target(), however that
3739
# raises an exception, and we just want to say "False" as in we won't
3740
# support converting between these formats.
3741
if 'IDS_never' in debug.debug_flags:
3743
if source.supports_rich_root() and not target.supports_rich_root():
3745
if (source._format.supports_tree_reference
3746
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:///'):
3226
if source.supports_rich_root() != target.supports_rich_root():
3228
# Ideally, we'd support fetching if the source had no tree references
3229
# even if it supported them...
3230
if (getattr(source, '_format.supports_tree_reference', False) and
3231
not getattr(target, '_format.supports_tree_reference', False)):
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):
3235
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3780
3236
"""Get the best delta and base for this revision.
3782
3238
:return: (basis_id, delta)
3240
possible_trees = [(parent_id, cache[parent_id])
3241
for parent_id in parent_ids
3242
if parent_id in cache]
3243
if len(possible_trees) == 0:
3244
# There either aren't any parents, or the parents aren't in the
3245
# cache, so just use the last converted tree
3246
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
3248
for basis_id, basis_tree in possible_trees:
3788
3249
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
3250
deltas.append((len(delta), basis_id, delta))
3805
3252
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):
3254
def _fetch_batch(self, revision_ids, basis_id, cache):
3837
3255
"""Fetch across a few revisions.
3839
3257
:param revision_ids: The revisions to copy
3840
3258
:param basis_id: The revision_id of a tree that must be in cache, used
3841
3259
as a basis for delta when no other base is available
3842
3260
: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
3261
:return: The revision_id of the last converted tree. The RevisionTree
3846
3262
for it will be in cache
3848
3264
# Walk though all revisions; get inventory deltas, copy referenced
3849
3265
# texts that delta references, insert the delta, revision and
3851
root_keys_to_create = set()
3852
3267
text_keys = set()
3853
3268
pending_deltas = []
3854
3269
pending_revisions = []
3855
3270
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
3271
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
3272
current_revision_id = tree.get_revision_id()
3862
3273
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
3274
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3276
# Find text entries that need to be copied
3277
for old_path, new_path, file_id, entry in delta:
3278
if new_path is not None:
3279
if not (new_path or self.target.supports_rich_root()):
3280
# We don't copy the text for the root node unless the
3281
# target supports_rich_root.
3284
# "if entry.revision == current_revision_id" ?
3285
if entry.revision == current_revision_id:
3286
text_keys.add((file_id, entry.revision))
3871
3287
revision = self.source.get_revision(current_revision_id)
3872
3288
pending_deltas.append((basis_id, delta,
3873
3289
current_revision_id, revision.parent_ids))
3874
if self._converting_to_rich_root:
3875
self._revision_id_to_root_id[current_revision_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()
3880
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)
3908
3290
pending_revisions.append(revision)
3909
3291
cache[current_revision_id] = tree
3910
3292
basis_id = current_revision_id
3911
self.source._safe_to_return_from_cache = False
3912
3293
# Copy file texts
3913
3294
from_texts = self.source.texts
3914
3295
to_texts = self.target.texts
3915
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)
3919
to_texts.insert_record_stream(root_stream)
3920
3296
to_texts.insert_record_stream(from_texts.get_record_stream(
3921
text_keys, self.target._format._fetch_order,
3922
not self.target._format._fetch_uses_deltas))
3923
# insert inventory deltas
3297
text_keys, self.target._fetch_order,
3298
not self.target._fetch_uses_deltas))
3924
3300
for delta in pending_deltas:
3925
3301
self.target.add_inventory_by_delta(*delta)
3926
if self.target._fallback_repositories:
3927
# Make sure this stacked repository has all the parent inventories
3928
# for the new revisions that we are about to insert. We do this
3929
# before adding the revisions so that no revision is added until
3930
# all the inventories it may depend on are added.
3931
# Note that this is overzealous, as we may have fetched these in an
3934
revision_ids = set()
3935
for revision in pending_revisions:
3936
revision_ids.add(revision.revision_id)
3937
parent_ids.update(revision.parent_ids)
3938
parent_ids.difference_update(revision_ids)
3939
parent_ids.discard(_mod_revision.NULL_REVISION)
3940
parent_map = self.source.get_parent_map(parent_ids)
3941
# we iterate over parent_map and not parent_ids because we don't
3942
# want to try copying any revision which is a ghost
3943
for parent_tree in self.source.revision_trees(parent_map):
3944
current_revision_id = parent_tree.get_revision_id()
3945
parents_parents = parent_map[current_revision_id]
3946
possible_trees = self._get_trees(parents_parents, cache)
3947
if len(possible_trees) == 0:
3948
# There either aren't any parents, or the parents are
3949
# ghosts, so just use the last converted tree.
3950
possible_trees.append((basis_id, cache[basis_id]))
3951
basis_id, delta = self._get_delta_for_revision(parent_tree,
3952
parents_parents, possible_trees)
3953
self.target.add_inventory_by_delta(
3954
basis_id, delta, current_revision_id, parents_parents)
3955
3302
# insert signatures and revisions
3956
3303
for revision in pending_revisions:
3977
3324
cache = lru_cache.LRUCache(100)
3978
3325
cache[basis_id] = basis_tree
3979
3326
del basis_tree # We don't want to hang on to it here
3981
if self._converting_to_rich_root and len(revision_ids) > 100:
3982
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3987
3327
for offset in range(0, len(revision_ids), batch_size):
3988
3328
self.target.start_write_group()
3990
3330
pb.update('Transferring revisions', offset,
3991
3331
len(revision_ids))
3992
3332
batch = revision_ids[offset:offset+batch_size]
3993
basis_id = self._fetch_batch(batch, basis_id, cache,
3333
basis_id = self._fetch_batch(batch, basis_id, cache)
3996
self.source._safe_to_return_from_cache = False
3997
3335
self.target.abort_write_group()
4000
hint = self.target.commit_write_group()
4003
if hints and self.target._format.pack_compresses:
4004
self.target.pack(hint=hints)
3338
self.target.commit_write_group()
4005
3339
pb.update('Transferring revisions', len(revision_ids),
4006
3340
len(revision_ids))
4008
3342
@needs_write_lock
4009
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
3343
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
4011
3344
"""See InterRepository.fetch()."""
4012
if fetch_spec is not None:
4013
raise AssertionError("Not implemented yet...")
4014
ui.ui_factory.warn_experimental_format_fetch(self)
4015
if (not self.source.supports_rich_root()
4016
and self.target.supports_rich_root()):
4017
self._converting_to_rich_root = True
4018
self._revision_id_to_root_id = {}
4020
self._converting_to_rich_root = False
4021
# See <https://launchpad.net/bugs/456077> asking for a warning here
4022
if self.source._format.network_name() != self.target._format.network_name():
4023
ui.ui_factory.show_user_warning('cross_format_fetch',
4024
from_format=self.source._format,
4025
to_format=self.target._format)
4026
3345
revision_ids = self.target.search_missing_revision_ids(self.source,
4027
3346
revision_id, find_ghosts=find_ghosts).get_keys()
4028
3347
if not revision_ids:
4030
3349
revision_ids = tsort.topo_sort(
4031
3350
self.source.get_graph().get_parent_map(revision_ids))
4032
if not revision_ids:
4034
# Walk though all revisions; get inventory deltas, copy referenced
4035
# texts that delta references, insert the delta, revision and
4038
3352
my_pb = ui.ui_factory.nested_progress_bar()
4041
symbol_versioning.warn(
4042
symbol_versioning.deprecated_in((1, 14, 0))
4043
% "pb parameter to fetch()")
4046
3357
self._fetch_all_revisions(revision_ids, pb)
4072
3383
return basis_id, basis_tree
3386
class InterOtherToRemote(InterRepository):
3387
"""An InterRepository that simply delegates to the 'real' InterRepository
3388
calculated for (source, target._real_repository).
3391
_walk_to_common_revisions_batch_size = 50
3393
def __init__(self, source, target):
3394
InterRepository.__init__(self, source, target)
3395
self._real_inter = None
3398
def is_compatible(source, target):
3399
if isinstance(target, remote.RemoteRepository):
3403
def _ensure_real_inter(self):
3404
if self._real_inter is None:
3405
self.target._ensure_real()
3406
real_target = self.target._real_repository
3407
self._real_inter = InterRepository.get(self.source, real_target)
3408
# Make _real_inter use the RemoteRepository for get_parent_map
3409
self._real_inter.target_get_graph = self.target.get_graph
3410
self._real_inter.target_get_parent_map = self.target.get_parent_map
3412
def copy_content(self, revision_id=None):
3413
self._ensure_real_inter()
3414
self._real_inter.copy_content(revision_id=revision_id)
3416
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3417
self._ensure_real_inter()
3418
return self._real_inter.fetch(revision_id=revision_id, pb=pb,
3419
find_ghosts=find_ghosts)
3422
def _get_repo_format_to_test(self):
3426
class InterRemoteToOther(InterRepository):
3428
def __init__(self, source, target):
3429
InterRepository.__init__(self, source, target)
3430
self._real_inter = None
3433
def is_compatible(source, target):
3434
if not isinstance(source, remote.RemoteRepository):
3436
# Is source's model compatible with target's model?
3437
source._ensure_real()
3438
real_source = source._real_repository
3439
if isinstance(real_source, remote.RemoteRepository):
3440
raise NotImplementedError(
3441
"We don't support remote repos backed by remote repos yet.")
3442
return InterRepository._same_model(real_source, target)
3444
def _ensure_real_inter(self):
3445
if self._real_inter is None:
3446
self.source._ensure_real()
3447
real_source = self.source._real_repository
3448
self._real_inter = InterRepository.get(real_source, self.target)
3450
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3451
self._ensure_real_inter()
3452
return self._real_inter.fetch(revision_id=revision_id, pb=pb,
3453
find_ghosts=find_ghosts)
3455
def copy_content(self, revision_id=None):
3456
self._ensure_real_inter()
3457
self._real_inter.copy_content(revision_id=revision_id)
3460
def _get_repo_format_to_test(self):
3465
class InterPackToRemotePack(InterPackRepo):
3466
"""A specialisation of InterPackRepo for a target that is a
3469
This will use the get_parent_map RPC rather than plain readvs, and also
3470
uses an RPC for autopacking.
3473
_walk_to_common_revisions_batch_size = 50
3476
def is_compatible(source, target):
3477
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
3478
if isinstance(source._format, RepositoryFormatPack):
3479
if isinstance(target, remote.RemoteRepository):
3480
target._ensure_real()
3481
if isinstance(target._real_repository._format,
3482
RepositoryFormatPack):
3483
if InterRepository._same_model(source, target):
3487
def _autopack(self):
3488
self.target.autopack()
3491
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3492
"""See InterRepository.fetch()."""
3493
# Always fetch using the generic streaming fetch code, to allow
3494
# streaming fetching into remote servers.
3495
from bzrlib.fetch import RepoFetcher
3496
fetcher = RepoFetcher(self.target, self.source, revision_id,
3498
return fetcher.count_copied, fetcher.failed_revisions
3500
def _get_target_pack_collection(self):
3501
return self.target._real_repository._pack_collection
3504
def _get_repo_format_to_test(self):
4075
3508
InterRepository.register_optimiser(InterDifferingSerializer)
4076
3509
InterRepository.register_optimiser(InterSameDataRepository)
4077
3510
InterRepository.register_optimiser(InterWeaveRepo)
4078
3511
InterRepository.register_optimiser(InterKnitRepo)
3512
InterRepository.register_optimiser(InterModel1and2)
3513
InterRepository.register_optimiser(InterKnit1and2)
3514
InterRepository.register_optimiser(InterPackRepo)
3515
InterRepository.register_optimiser(InterOtherToRemote)
3516
InterRepository.register_optimiser(InterRemoteToOther)
3517
InterRepository.register_optimiser(InterPackToRemotePack)
4081
3520
class CopyConverter(object):
4370
3757
# missing keys can handle suspending a write group).
4371
3758
write_group_tokens = self.target_repo.suspend_write_group()
4372
3759
return write_group_tokens, missing_keys
4373
hint = self.target_repo.commit_write_group()
4374
if (to_serializer != src_serializer and
4375
self.target_repo._format.pack_compresses):
4376
self.target_repo.pack(hint=hint)
3760
self.target_repo.commit_write_group()
4377
3761
return [], set()
4379
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4380
target_rich_root = self.target_repo._format.rich_root_data
4381
target_tree_refs = self.target_repo._format.supports_tree_reference
4382
for record in substream:
4383
# Insert the delta directly
4384
inventory_delta_bytes = record.get_bytes_as('fulltext')
4385
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4387
parse_result = deserialiser.parse_text_bytes(
4388
inventory_delta_bytes)
4389
except inventory_delta.IncompatibleInventoryDelta, err:
4390
trace.mutter("Incompatible delta: %s", err.msg)
4391
raise errors.IncompatibleRevision(self.target_repo._format)
4392
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4393
revision_id = new_id
4394
parents = [key[0] for key in record.parents]
4395
self.target_repo.add_inventory_by_delta(
4396
basis_id, inv_delta, revision_id, parents)
4398
def _extract_and_insert_inventories(self, substream, serializer,
3763
def _extract_and_insert_inventories(self, substream, serializer):
4400
3764
"""Generate a new inventory versionedfile in target, converting data.
4402
3766
The inventory is retrieved from the source, (deserializing it), and
4403
3767
stored in the target (reserializing it in a different format).
4405
target_rich_root = self.target_repo._format.rich_root_data
4406
target_tree_refs = self.target_repo._format.supports_tree_reference
4407
3769
for record in substream:
4408
# It's not a delta, so it must be a fulltext in the source
4409
# serializer's format.
4410
3770
bytes = record.get_bytes_as('fulltext')
4411
3771
revision_id = record.key[0]
4412
3772
inv = serializer.read_inventory_from_string(bytes, revision_id)
4413
3773
parents = [key[0] for key in record.parents]
4414
3774
self.target_repo.add_inventory(revision_id, inv, parents)
4415
# No need to keep holding this full inv in memory when the rest of
4416
# the substream is likely to be all deltas.
4419
3776
def _extract_and_insert_revisions(self, substream, serializer):
4420
3777
for record in substream:
4426
3783
self.target_repo.add_revision(revision_id, rev)
4428
3785
def finished(self):
4429
if self.target_repo._format._fetch_reconcile:
3786
if self.target_repo._fetch_reconcile:
4430
3787
self.target_repo.reconcile()
4433
class StreamSource(object):
4434
"""A source of a stream for fetching between repositories."""
4436
def __init__(self, from_repository, to_format):
4437
"""Create a StreamSource streaming from from_repository."""
4438
self.from_repository = from_repository
4439
self.to_format = to_format
4441
def delta_on_metadata(self):
4442
"""Return True if delta's are permitted on metadata streams.
4444
That is on revisions and signatures.
4446
src_serializer = self.from_repository._format._serializer
4447
target_serializer = self.to_format._serializer
4448
return (self.to_format._fetch_uses_deltas and
4449
src_serializer == target_serializer)
4451
def _fetch_revision_texts(self, revs):
4452
# fetch signatures first and then the revision texts
4453
# may need to be a InterRevisionStore call here.
4454
from_sf = self.from_repository.signatures
4455
# A missing signature is just skipped.
4456
keys = [(rev_id,) for rev_id in revs]
4457
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4459
self.to_format._fetch_order,
4460
not self.to_format._fetch_uses_deltas))
4461
# If a revision has a delta, this is actually expanded inside the
4462
# insert_record_stream code now, which is an alternate fix for
4464
from_rf = self.from_repository.revisions
4465
revisions = from_rf.get_record_stream(
4467
self.to_format._fetch_order,
4468
not self.delta_on_metadata())
4469
return [('signatures', signatures), ('revisions', revisions)]
4471
def _generate_root_texts(self, revs):
4472
"""This will be called by get_stream between fetching weave texts and
4473
fetching the inventory weave.
4475
if self._rich_root_upgrade():
4476
return _mod_fetch.Inter1and2Helper(
4477
self.from_repository).generate_root_texts(revs)
4481
def get_stream(self, search):
4483
revs = search.get_keys()
4484
graph = self.from_repository.get_graph()
4485
revs = tsort.topo_sort(graph.get_parent_map(revs))
4486
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4488
for knit_kind, file_id, revisions in data_to_fetch:
4489
if knit_kind != phase:
4491
# Make a new progress bar for this phase
4492
if knit_kind == "file":
4493
# Accumulate file texts
4494
text_keys.extend([(file_id, revision) for revision in
4496
elif knit_kind == "inventory":
4497
# Now copy the file texts.
4498
from_texts = self.from_repository.texts
4499
yield ('texts', from_texts.get_record_stream(
4500
text_keys, self.to_format._fetch_order,
4501
not self.to_format._fetch_uses_deltas))
4502
# Cause an error if a text occurs after we have done the
4505
# Before we process the inventory we generate the root
4506
# texts (if necessary) so that the inventories references
4508
for _ in self._generate_root_texts(revs):
4510
# we fetch only the referenced inventories because we do not
4511
# know for unselected inventories whether all their required
4512
# texts are present in the other repository - it could be
4514
for info in self._get_inventory_stream(revs):
4516
elif knit_kind == "signatures":
4517
# Nothing to do here; this will be taken care of when
4518
# _fetch_revision_texts happens.
4520
elif knit_kind == "revisions":
4521
for record in self._fetch_revision_texts(revs):
4524
raise AssertionError("Unknown knit kind %r" % knit_kind)
4526
def get_stream_for_missing_keys(self, missing_keys):
4527
# missing keys can only occur when we are byte copying and not
4528
# translating (because translation means we don't send
4529
# unreconstructable deltas ever).
4531
keys['texts'] = set()
4532
keys['revisions'] = set()
4533
keys['inventories'] = set()
4534
keys['chk_bytes'] = set()
4535
keys['signatures'] = set()
4536
for key in missing_keys:
4537
keys[key[0]].add(key[1:])
4538
if len(keys['revisions']):
4539
# If we allowed copying revisions at this point, we could end up
4540
# copying a revision without copying its required texts: a
4541
# violation of the requirements for repository integrity.
4542
raise AssertionError(
4543
'cannot copy revisions to fill in missing deltas %s' % (
4544
keys['revisions'],))
4545
for substream_kind, keys in keys.iteritems():
4546
vf = getattr(self.from_repository, substream_kind)
4547
if vf is None and keys:
4548
raise AssertionError(
4549
"cannot fill in keys for a versioned file we don't"
4550
" have: %s needs %s" % (substream_kind, keys))
4552
# No need to stream something we don't have
4554
if substream_kind == 'inventories':
4555
# Some missing keys are genuinely ghosts, filter those out.
4556
present = self.from_repository.inventories.get_parent_map(keys)
4557
revs = [key[0] for key in present]
4558
# Get the inventory stream more-or-less as we do for the
4559
# original stream; there's no reason to assume that records
4560
# direct from the source will be suitable for the sink. (Think
4561
# e.g. 2a -> 1.9-rich-root).
4562
for info in self._get_inventory_stream(revs, missing=True):
4566
# Ask for full texts always so that we don't need more round trips
4567
# after this stream.
4568
# Some of the missing keys are genuinely ghosts, so filter absent
4569
# records. The Sink is responsible for doing another check to
4570
# ensure that ghosts don't introduce missing data for future
4572
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4573
self.to_format._fetch_order, True))
4574
yield substream_kind, stream
4576
def inventory_fetch_order(self):
4577
if self._rich_root_upgrade():
4578
return 'topological'
4580
return self.to_format._fetch_order
4582
def _rich_root_upgrade(self):
4583
return (not self.from_repository._format.rich_root_data and
4584
self.to_format.rich_root_data)
4586
def _get_inventory_stream(self, revision_ids, missing=False):
4587
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,
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)
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.
4613
from_weave = self.from_repository.inventories
4615
delta_closure = True
4617
delta_closure = not self.delta_on_metadata()
4618
yield ('inventories', from_weave.get_record_stream(
4619
[(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.
4644
from_repo = self.from_repository
4645
revision_keys = [(rev_id,) for rev_id in revision_ids]
4646
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:
4663
key = (inv.revision_id,)
4664
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
yield versionedfile.FulltextContentFactory(
4697
key, parent_keys, None, delta_serialized)
4700
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4701
stop_revision=None):
4702
"""Extend the partial history to include a given index
4704
If a stop_index is supplied, stop when that index has been reached.
4705
If a stop_revision is supplied, stop when that revision is
4706
encountered. Otherwise, stop when the beginning of history is
4709
:param stop_index: The index which should be present. When it is
4710
present, history extension will stop.
4711
:param stop_revision: The revision id which should be present. When
4712
it is encountered, history extension will stop.
4714
start_revision = partial_history_cache[-1]
4715
iterator = repo.iter_reverse_revision_history(start_revision)
4717
#skip the last revision in the list
4720
if (stop_index is not None and
4721
len(partial_history_cache) > stop_index):
4723
if partial_history_cache[-1] == stop_revision:
4725
revision_id = iterator.next()
4726
partial_history_cache.append(revision_id)
4727
except StopIteration:
added
removed
bzrlib/repository.py
