556
398
# unchanged, carry over.
557
399
ie.reference_revision = parent_entry.reference_revision
558
400
ie.revision = parent_entry.revision
559
return self._get_delta(ie, basis_inv, path), False, None
401
return self._get_delta(ie, basis_inv, path), False
560
402
ie.reference_revision = content_summary[3]
561
if ie.reference_revision is None:
562
raise AssertionError("invalid content_summary for nested tree: %r"
563
% (content_summary,))
564
self._add_text_to_weave(ie.file_id, '', heads, None)
404
self._add_text_to_weave(ie.file_id, lines, heads, None)
566
406
raise NotImplementedError('unknown kind')
567
407
ie.revision = self._new_revision_id
568
self._any_changes = True
569
return self._get_delta(ie, basis_inv, path), True, fingerprint
571
def record_iter_changes(self, tree, basis_revision_id, iter_changes,
572
_entry_factory=entry_factory):
573
"""Record a new tree via iter_changes.
575
:param tree: The tree to obtain text contents from for changed objects.
576
:param basis_revision_id: The revision id of the tree the iter_changes
577
has been generated against. Currently assumed to be the same
578
as self.parents[0] - if it is not, errors may occur.
579
:param iter_changes: An iter_changes iterator with the changes to apply
580
to basis_revision_id. The iterator must not include any items with
581
a current kind of None - missing items must be either filtered out
582
or errored-on beefore record_iter_changes sees the item.
583
:param _entry_factory: Private method to bind entry_factory locally for
585
:return: A generator of (file_id, relpath, fs_hash) tuples for use with
588
# Create an inventory delta based on deltas between all the parents and
589
# deltas between all the parent inventories. We use inventory delta's
590
# between the inventory objects because iter_changes masks
591
# last-changed-field only changes.
593
# file_id -> change map, change is fileid, paths, changed, versioneds,
594
# parents, names, kinds, executables
596
# {file_id -> revision_id -> inventory entry, for entries in parent
597
# trees that are not parents[0]
601
revtrees = list(self.repository.revision_trees(self.parents))
602
except errors.NoSuchRevision:
603
# one or more ghosts, slow path.
605
for revision_id in self.parents:
607
revtrees.append(self.repository.revision_tree(revision_id))
608
except errors.NoSuchRevision:
610
basis_revision_id = _mod_revision.NULL_REVISION
612
revtrees.append(self.repository.revision_tree(
613
_mod_revision.NULL_REVISION))
614
# The basis inventory from a repository
616
basis_inv = revtrees[0].inventory
618
basis_inv = self.repository.revision_tree(
619
_mod_revision.NULL_REVISION).inventory
620
if len(self.parents) > 0:
621
if basis_revision_id != self.parents[0] and not ghost_basis:
623
"arbitrary basis parents not yet supported with merges")
624
for revtree in revtrees[1:]:
625
for change in revtree.inventory._make_delta(basis_inv):
626
if change[1] is None:
627
# Not present in this parent.
629
if change[2] not in merged_ids:
630
if change[0] is not None:
631
basis_entry = basis_inv[change[2]]
632
merged_ids[change[2]] = [
634
basis_entry.revision,
637
parent_entries[change[2]] = {
639
basis_entry.revision:basis_entry,
641
change[3].revision:change[3],
644
merged_ids[change[2]] = [change[3].revision]
645
parent_entries[change[2]] = {change[3].revision:change[3]}
647
merged_ids[change[2]].append(change[3].revision)
648
parent_entries[change[2]][change[3].revision] = change[3]
651
# Setup the changes from the tree:
652
# changes maps file_id -> (change, [parent revision_ids])
654
for change in iter_changes:
655
# This probably looks up in basis_inv way to much.
656
if change[1][0] is not None:
657
head_candidate = [basis_inv[change[0]].revision]
660
changes[change[0]] = change, merged_ids.get(change[0],
662
unchanged_merged = set(merged_ids) - set(changes)
663
# Extend the changes dict with synthetic changes to record merges of
665
for file_id in unchanged_merged:
666
# Record a merged version of these items that did not change vs the
667
# basis. This can be either identical parallel changes, or a revert
668
# of a specific file after a merge. The recorded content will be
669
# that of the current tree (which is the same as the basis), but
670
# the per-file graph will reflect a merge.
671
# NB:XXX: We are reconstructing path information we had, this
672
# should be preserved instead.
673
# inv delta change: (file_id, (path_in_source, path_in_target),
674
# changed_content, versioned, parent, name, kind,
677
basis_entry = basis_inv[file_id]
678
except errors.NoSuchId:
679
# a change from basis->some_parents but file_id isn't in basis
680
# so was new in the merge, which means it must have changed
681
# from basis -> current, and as it hasn't the add was reverted
682
# by the user. So we discard this change.
686
(basis_inv.id2path(file_id), tree.id2path(file_id)),
688
(basis_entry.parent_id, basis_entry.parent_id),
689
(basis_entry.name, basis_entry.name),
690
(basis_entry.kind, basis_entry.kind),
691
(basis_entry.executable, basis_entry.executable))
692
changes[file_id] = (change, merged_ids[file_id])
693
# changes contains tuples with the change and a set of inventory
694
# candidates for the file.
696
# old_path, new_path, file_id, new_inventory_entry
697
seen_root = False # Is the root in the basis delta?
698
inv_delta = self._basis_delta
699
modified_rev = self._new_revision_id
700
for change, head_candidates in changes.values():
701
if change[3][1]: # versioned in target.
702
# Several things may be happening here:
703
# We may have a fork in the per-file graph
704
# - record a change with the content from tree
705
# We may have a change against < all trees
706
# - carry over the tree that hasn't changed
707
# We may have a change against all trees
708
# - record the change with the content from tree
711
entry = _entry_factory[kind](file_id, change[5][1],
713
head_set = self._heads(change[0], set(head_candidates))
716
for head_candidate in head_candidates:
717
if head_candidate in head_set:
718
heads.append(head_candidate)
719
head_set.remove(head_candidate)
722
# Could be a carry-over situation:
723
parent_entry_revs = parent_entries.get(file_id, None)
724
if parent_entry_revs:
725
parent_entry = parent_entry_revs.get(heads[0], None)
728
if parent_entry is None:
729
# The parent iter_changes was called against is the one
730
# that is the per-file head, so any change is relevant
731
# iter_changes is valid.
732
carry_over_possible = False
734
# could be a carry over situation
735
# A change against the basis may just indicate a merge,
736
# we need to check the content against the source of the
737
# merge to determine if it was changed after the merge
739
if (parent_entry.kind != entry.kind or
740
parent_entry.parent_id != entry.parent_id or
741
parent_entry.name != entry.name):
742
# Metadata common to all entries has changed
743
# against per-file parent
744
carry_over_possible = False
746
carry_over_possible = True
747
# per-type checks for changes against the parent_entry
750
# Cannot be a carry-over situation
751
carry_over_possible = False
752
# Populate the entry in the delta
754
# XXX: There is still a small race here: If someone reverts the content of a file
755
# after iter_changes examines and decides it has changed,
756
# we will unconditionally record a new version even if some
757
# other process reverts it while commit is running (with
758
# the revert happening after iter_changes did it's
761
entry.executable = True
763
entry.executable = False
764
if (carry_over_possible and
765
parent_entry.executable == entry.executable):
766
# Check the file length, content hash after reading
768
nostore_sha = parent_entry.text_sha1
771
file_obj, stat_value = tree.get_file_with_stat(file_id, change[1][1])
773
text = file_obj.read()
777
entry.text_sha1, entry.text_size = self._add_text_to_weave(
778
file_id, text, heads, nostore_sha)
779
yield file_id, change[1][1], (entry.text_sha1, stat_value)
780
except errors.ExistingContent:
781
# No content change against a carry_over parent
782
# Perhaps this should also yield a fs hash update?
784
entry.text_size = parent_entry.text_size
785
entry.text_sha1 = parent_entry.text_sha1
786
elif kind == 'symlink':
788
entry.symlink_target = tree.get_symlink_target(file_id)
789
if (carry_over_possible and
790
parent_entry.symlink_target == entry.symlink_target):
793
self._add_text_to_weave(change[0], '', heads, None)
794
elif kind == 'directory':
795
if carry_over_possible:
798
# Nothing to set on the entry.
799
# XXX: split into the Root and nonRoot versions.
800
if change[1][1] != '' or self.repository.supports_rich_root():
801
self._add_text_to_weave(change[0], '', heads, None)
802
elif kind == 'tree-reference':
803
if not self.repository._format.supports_tree_reference:
804
# This isn't quite sane as an error, but we shouldn't
805
# ever see this code path in practice: tree's don't
806
# permit references when the repo doesn't support tree
808
raise errors.UnsupportedOperation(tree.add_reference,
810
reference_revision = tree.get_reference_revision(change[0])
811
entry.reference_revision = reference_revision
812
if (carry_over_possible and
813
parent_entry.reference_revision == reference_revision):
816
self._add_text_to_weave(change[0], '', heads, None)
818
raise AssertionError('unknown kind %r' % kind)
820
entry.revision = modified_rev
822
entry.revision = parent_entry.revision
825
new_path = change[1][1]
826
inv_delta.append((change[1][0], new_path, change[0], entry))
829
self.new_inventory = None
831
# This should perhaps be guarded by a check that the basis we
832
# commit against is the basis for the commit and if not do a delta
834
self._any_changes = True
836
# housekeeping root entry changes do not affect no-change commits.
837
self._require_root_change(tree)
838
self.basis_delta_revision = basis_revision_id
840
def _add_text_to_weave(self, file_id, new_text, parents, nostore_sha):
841
parent_keys = tuple([(file_id, parent) for parent in parents])
842
return self.repository.texts._add_text(
843
(file_id, self._new_revision_id), parent_keys, new_text,
844
nostore_sha=nostore_sha, random_id=self.random_revid)[0:2]
408
return self._get_delta(ie, basis_inv, path), True
410
def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
411
# Note: as we read the content directly from the tree, we know its not
412
# been turned into unicode or badly split - but a broken tree
413
# implementation could give us bad output from readlines() so this is
414
# not a guarantee of safety. What would be better is always checking
415
# the content during test suite execution. RBC 20070912
416
parent_keys = tuple((file_id, parent) for parent in parents)
417
return self.repository.texts.add_lines(
418
(file_id, self._new_revision_id), parent_keys, new_lines,
419
nostore_sha=nostore_sha, random_id=self.random_revid,
420
check_content=False)[0:2]
847
423
class RootCommitBuilder(CommitBuilder):
848
424
"""This commitbuilder actually records the root id"""
850
426
# the root entry gets versioned properly by this builder.
851
427
_versioned_root = True
1195
628
# The old API returned a list, should this actually be a set?
1196
629
return parent_map.keys()
1198
def _check_inventories(self, checker):
1199
"""Check the inventories found from the revision scan.
1201
This is responsible for verifying the sha1 of inventories and
1202
creating a pending_keys set that covers data referenced by inventories.
1204
bar = ui.ui_factory.nested_progress_bar()
1206
self._do_check_inventories(checker, bar)
1210
def _do_check_inventories(self, checker, bar):
1211
"""Helper for _check_inventories."""
1213
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1214
kinds = ['chk_bytes', 'texts']
1215
count = len(checker.pending_keys)
1216
bar.update("inventories", 0, 2)
1217
current_keys = checker.pending_keys
1218
checker.pending_keys = {}
1219
# Accumulate current checks.
1220
for key in current_keys:
1221
if key[0] != 'inventories' and key[0] not in kinds:
1222
checker._report_items.append('unknown key type %r' % (key,))
1223
keys[key[0]].add(key[1:])
1224
if keys['inventories']:
1225
# NB: output order *should* be roughly sorted - topo or
1226
# inverse topo depending on repository - either way decent
1227
# to just delta against. However, pre-CHK formats didn't
1228
# try to optimise inventory layout on disk. As such the
1229
# pre-CHK code path does not use inventory deltas.
1231
for record in self.inventories.check(keys=keys['inventories']):
1232
if record.storage_kind == 'absent':
1233
checker._report_items.append(
1234
'Missing inventory {%s}' % (record.key,))
1236
last_object = self._check_record('inventories', record,
1237
checker, last_object,
1238
current_keys[('inventories',) + record.key])
1239
del keys['inventories']
1242
bar.update("texts", 1)
1243
while (checker.pending_keys or keys['chk_bytes']
1245
# Something to check.
1246
current_keys = checker.pending_keys
1247
checker.pending_keys = {}
1248
# Accumulate current checks.
1249
for key in current_keys:
1250
if key[0] not in kinds:
1251
checker._report_items.append('unknown key type %r' % (key,))
1252
keys[key[0]].add(key[1:])
1253
# Check the outermost kind only - inventories || chk_bytes || texts
1257
for record in getattr(self, kind).check(keys=keys[kind]):
1258
if record.storage_kind == 'absent':
1259
checker._report_items.append(
1260
'Missing %s {%s}' % (kind, record.key,))
1262
last_object = self._check_record(kind, record,
1263
checker, last_object, current_keys[(kind,) + record.key])
1267
def _check_record(self, kind, record, checker, last_object, item_data):
1268
"""Check a single text from this repository."""
1269
if kind == 'inventories':
1270
rev_id = record.key[0]
1271
inv = self._deserialise_inventory(rev_id,
1272
record.get_bytes_as('fulltext'))
1273
if last_object is not None:
1274
delta = inv._make_delta(last_object)
1275
for old_path, path, file_id, ie in delta:
1278
ie.check(checker, rev_id, inv)
1280
for path, ie in inv.iter_entries():
1281
ie.check(checker, rev_id, inv)
1282
if self._format.fast_deltas:
1284
elif kind == 'chk_bytes':
1285
# No code written to check chk_bytes for this repo format.
1286
checker._report_items.append(
1287
'unsupported key type chk_bytes for %s' % (record.key,))
1288
elif kind == 'texts':
1289
self._check_text(record, checker, item_data)
1291
checker._report_items.append(
1292
'unknown key type %s for %s' % (kind, record.key))
1294
def _check_text(self, record, checker, item_data):
1295
"""Check a single text."""
1296
# Check it is extractable.
1297
# TODO: check length.
1298
if record.storage_kind == 'chunked':
1299
chunks = record.get_bytes_as(record.storage_kind)
1300
sha1 = osutils.sha_strings(chunks)
1301
length = sum(map(len, chunks))
1303
content = record.get_bytes_as('fulltext')
1304
sha1 = osutils.sha_string(content)
1305
length = len(content)
1306
if item_data and sha1 != item_data[1]:
1307
checker._report_items.append(
1308
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1309
(record.key, sha1, item_data[1], item_data[2]))
1312
632
def create(a_bzrdir):
1313
633
"""Construct the current default format repository in a_bzrdir."""
1588
885
"""Commit the contents accrued within the current write group.
1590
887
:seealso: start_write_group.
1592
:return: it may return an opaque hint that can be passed to 'pack'.
1594
889
if self._write_group is not self.get_transaction():
1595
890
# has an unlock or relock occured ?
1596
891
raise errors.BzrError('mismatched lock context %r and '
1597
892
'write group %r.' %
1598
893
(self.get_transaction(), self._write_group))
1599
result = self._commit_write_group()
894
self._commit_write_group()
1600
895
self._write_group = None
1603
897
def _commit_write_group(self):
1604
898
"""Template method for per-repository write group cleanup.
1606
This is called before the write group is considered to be
900
This is called before the write group is considered to be
1607
901
finished and should ensure that all data handed to the repository
1608
for writing during the write group is safely committed (to the
902
for writing during the write group is safely committed (to the
1609
903
extent possible considering file system caching etc).
1612
def suspend_write_group(self):
1613
raise errors.UnsuspendableWriteGroup(self)
1615
def get_missing_parent_inventories(self, check_for_missing_texts=True):
1616
"""Return the keys of missing inventory parents for revisions added in
1619
A revision is not complete if the inventory delta for that revision
1620
cannot be calculated. Therefore if the parent inventories of a
1621
revision are not present, the revision is incomplete, and e.g. cannot
1622
be streamed by a smart server. This method finds missing inventory
1623
parents for revisions added in this write group.
1625
if not self._format.supports_external_lookups:
1626
# This is only an issue for stacked repositories
1628
if not self.is_in_write_group():
1629
raise AssertionError('not in a write group')
1631
# XXX: We assume that every added revision already has its
1632
# corresponding inventory, so we only check for parent inventories that
1633
# might be missing, rather than all inventories.
1634
parents = set(self.revisions._index.get_missing_parents())
1635
parents.discard(_mod_revision.NULL_REVISION)
1636
unstacked_inventories = self.inventories._index
1637
present_inventories = unstacked_inventories.get_parent_map(
1638
key[-1:] for key in parents)
1639
parents.difference_update(present_inventories)
1640
if len(parents) == 0:
1641
# No missing parent inventories.
1643
if not check_for_missing_texts:
1644
return set(('inventories', rev_id) for (rev_id,) in parents)
1645
# Ok, now we have a list of missing inventories. But these only matter
1646
# if the inventories that reference them are missing some texts they
1647
# appear to introduce.
1648
# XXX: Texts referenced by all added inventories need to be present,
1649
# but at the moment we're only checking for texts referenced by
1650
# inventories at the graph's edge.
1651
key_deps = self.revisions._index._key_dependencies
1652
key_deps.satisfy_refs_for_keys(present_inventories)
1653
referrers = frozenset(r[0] for r in key_deps.get_referrers())
1654
file_ids = self.fileids_altered_by_revision_ids(referrers)
1655
missing_texts = set()
1656
for file_id, version_ids in file_ids.iteritems():
1657
missing_texts.update(
1658
(file_id, version_id) for version_id in version_ids)
1659
present_texts = self.texts.get_parent_map(missing_texts)
1660
missing_texts.difference_update(present_texts)
1661
if not missing_texts:
1662
# No texts are missing, so all revisions and their deltas are
1665
# Alternatively the text versions could be returned as the missing
1666
# keys, but this is likely to be less data.
1667
missing_keys = set(('inventories', rev_id) for (rev_id,) in parents)
1670
def refresh_data(self):
1671
"""Re-read any data needed to synchronise with disk.
1673
This method is intended to be called after another repository instance
1674
(such as one used by a smart server) has inserted data into the
1675
repository. On all repositories this will work outside of write groups.
1676
Some repository formats (pack and newer for bzrlib native formats)
1677
support refresh_data inside write groups. If called inside a write
1678
group on a repository that does not support refreshing in a write group
1679
IsInWriteGroupError will be raised.
1681
self._refresh_data()
1683
def resume_write_group(self, tokens):
1684
if not self.is_write_locked():
1685
raise errors.NotWriteLocked(self)
1686
if self._write_group:
1687
raise errors.BzrError('already in a write group')
1688
self._resume_write_group(tokens)
1689
# so we can detect unlock/relock - the write group is now entered.
1690
self._write_group = self.get_transaction()
1692
def _resume_write_group(self, tokens):
1693
raise errors.UnsuspendableWriteGroup(self)
1695
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False,
906
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False):
1697
907
"""Fetch the content required to construct revision_id from source.
1699
If revision_id is None and fetch_spec is None, then all content is
1702
fetch() may not be used when the repository is in a write group -
1703
either finish the current write group before using fetch, or use
1704
fetch before starting the write group.
909
If revision_id is None all content is copied.
1706
910
:param find_ghosts: Find and copy revisions in the source that are
1707
911
ghosts in the target (and not reachable directly by walking out to
1708
912
the first-present revision in target from revision_id).
1709
:param revision_id: If specified, all the content needed for this
1710
revision ID will be copied to the target. Fetch will determine for
1711
itself which content needs to be copied.
1712
:param fetch_spec: If specified, a SearchResult or
1713
PendingAncestryResult that describes which revisions to copy. This
1714
allows copying multiple heads at once. Mutually exclusive with
1717
if fetch_spec is not None and revision_id is not None:
1718
raise AssertionError(
1719
"fetch_spec and revision_id are mutually exclusive.")
1720
if self.is_in_write_group():
1721
raise errors.InternalBzrError(
1722
"May not fetch while in a write group.")
1723
914
# fast path same-url fetch operations
1724
# TODO: lift out to somewhere common with RemoteRepository
1725
# <https://bugs.edge.launchpad.net/bzr/+bug/401646>
1726
if (self.has_same_location(source)
1727
and fetch_spec is None
1728
and self._has_same_fallbacks(source)):
915
if self.has_same_location(source):
1729
916
# check that last_revision is in 'from' and then return a
1731
918
if (revision_id is not None and
1732
919
not _mod_revision.is_null(revision_id)):
1733
920
self.get_revision(revision_id)
1735
# if there is no specific appropriate InterRepository, this will get
1736
# the InterRepository base class, which raises an
1737
# IncompatibleRepositories when asked to fetch.
1738
922
inter = InterRepository.get(source, self)
1739
return inter.fetch(revision_id=revision_id, pb=pb,
1740
find_ghosts=find_ghosts, fetch_spec=fetch_spec)
924
return inter.fetch(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts)
925
except NotImplementedError:
926
raise errors.IncompatibleRepositories(source, self)
1742
928
def create_bundle(self, target, base, fileobj, format=None):
1743
929
return serializer.write_bundle(self, target, base, fileobj, format)
1894
1063
@needs_read_lock
1895
1064
def get_revisions(self, revision_ids):
1896
"""Get many revisions at once.
1898
Repositories that need to check data on every revision read should
1899
subclass this method.
1065
"""Get many revisions at once."""
1901
1066
return self._get_revisions(revision_ids)
1903
1068
@needs_read_lock
1904
1069
def _get_revisions(self, revision_ids):
1905
1070
"""Core work logic to get many revisions without sanity checks."""
1071
for rev_id in revision_ids:
1072
if not rev_id or not isinstance(rev_id, basestring):
1073
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1074
keys = [(key,) for key in revision_ids]
1075
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1907
for revid, rev in self._iter_revisions(revision_ids):
1909
raise errors.NoSuchRevision(self, revid)
1077
for record in stream:
1078
if record.storage_kind == 'absent':
1079
raise errors.NoSuchRevision(self, record.key[0])
1080
text = record.get_bytes_as('fulltext')
1081
rev = self._serializer.read_revision_from_string(text)
1082
revs[record.key[0]] = rev
1911
1083
return [revs[revid] for revid in revision_ids]
1913
def _iter_revisions(self, revision_ids):
1914
"""Iterate over revision objects.
1916
:param revision_ids: An iterable of revisions to examine. None may be
1917
passed to request all revisions known to the repository. Note that
1918
not all repositories can find unreferenced revisions; for those
1919
repositories only referenced ones will be returned.
1920
:return: An iterator of (revid, revision) tuples. Absent revisions (
1921
those asked for but not available) are returned as (revid, None).
1923
if revision_ids is None:
1924
revision_ids = self.all_revision_ids()
1926
for rev_id in revision_ids:
1927
if not rev_id or not isinstance(rev_id, basestring):
1928
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1929
keys = [(key,) for key in revision_ids]
1930
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1931
for record in stream:
1932
revid = record.key[0]
1933
if record.storage_kind == 'absent':
1936
text = record.get_bytes_as('fulltext')
1937
rev = self._serializer.read_revision_from_string(text)
1940
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1086
def get_revision_xml(self, revision_id):
1087
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1088
# would have already do it.
1089
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1090
rev = self.get_revision(revision_id)
1091
rev_tmp = StringIO()
1092
# the current serializer..
1093
self._serializer.write_revision(rev, rev_tmp)
1095
return rev_tmp.getvalue()
1097
def get_deltas_for_revisions(self, revisions):
1941
1098
"""Produce a generator of revision deltas.
1943
1100
Note that the input is a sequence of REVISIONS, not revision_ids.
1944
1101
Trees will be held in memory until the generator exits.
1945
1102
Each delta is relative to the revision's lefthand predecessor.
1947
:param specific_fileids: if not None, the result is filtered
1948
so that only those file-ids, their parents and their
1949
children are included.
1951
# Get the revision-ids of interest
1952
1104
required_trees = set()
1953
1105
for revision in revisions:
1954
1106
required_trees.add(revision.revision_id)
1955
1107
required_trees.update(revision.parent_ids[:1])
1957
# Get the matching filtered trees. Note that it's more
1958
# efficient to pass filtered trees to changes_from() rather
1959
# than doing the filtering afterwards. changes_from() could
1960
# arguably do the filtering itself but it's path-based, not
1961
# file-id based, so filtering before or afterwards is
1963
if specific_fileids is None:
1964
trees = dict((t.get_revision_id(), t) for
1965
t in self.revision_trees(required_trees))
1967
trees = dict((t.get_revision_id(), t) for
1968
t in self._filtered_revision_trees(required_trees,
1971
# Calculate the deltas
1108
trees = dict((t.get_revision_id(), t) for
1109
t in self.revision_trees(required_trees))
1972
1110
for revision in revisions:
1973
1111
if not revision.parent_ids:
1974
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1112
old_tree = self.revision_tree(None)
1976
1114
old_tree = trees[revision.parent_ids[0]]
1977
1115
yield trees[revision.revision_id].changes_from(old_tree)
1979
1117
@needs_read_lock
1980
def get_revision_delta(self, revision_id, specific_fileids=None):
1118
def get_revision_delta(self, revision_id):
1981
1119
"""Return the delta for one revision.
1983
1121
The delta is relative to the left-hand predecessor of the
1986
:param specific_fileids: if not None, the result is filtered
1987
so that only those file-ids, their parents and their
1988
children are included.
1990
1124
r = self.get_revision(revision_id)
1991
return list(self.get_deltas_for_revisions([r],
1992
specific_fileids=specific_fileids))[0]
1125
return list(self.get_deltas_for_revisions([r]))[0]
1994
1127
@needs_write_lock
1995
1128
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
2381
1468
"""Get Inventory object by revision id."""
2382
1469
return self.iter_inventories([revision_id]).next()
2384
def iter_inventories(self, revision_ids, ordering=None):
1471
def iter_inventories(self, revision_ids):
2385
1472
"""Get many inventories by revision_ids.
2387
1474
This will buffer some or all of the texts used in constructing the
2388
1475
inventories in memory, but will only parse a single inventory at a
2391
:param revision_ids: The expected revision ids of the inventories.
2392
:param ordering: optional ordering, e.g. 'topological'. If not
2393
specified, the order of revision_ids will be preserved (by
2394
buffering if necessary).
2395
1478
:return: An iterator of inventories.
2397
1480
if ((None in revision_ids)
2398
1481
or (_mod_revision.NULL_REVISION in revision_ids)):
2399
1482
raise ValueError('cannot get null revision inventory')
2400
return self._iter_inventories(revision_ids, ordering)
1483
return self._iter_inventories(revision_ids)
2402
def _iter_inventories(self, revision_ids, ordering):
1485
def _iter_inventories(self, revision_ids):
2403
1486
"""single-document based inventory iteration."""
2404
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2405
for text, revision_id in inv_xmls:
2406
yield self._deserialise_inventory(revision_id, text)
1487
for text, revision_id in self._iter_inventory_xmls(revision_ids):
1488
yield self.deserialise_inventory(revision_id, text)
2408
def _iter_inventory_xmls(self, revision_ids, ordering):
2409
if ordering is None:
2410
order_as_requested = True
2411
ordering = 'unordered'
2413
order_as_requested = False
1490
def _iter_inventory_xmls(self, revision_ids):
2414
1491
keys = [(revision_id,) for revision_id in revision_ids]
2417
if order_as_requested:
2418
key_iter = iter(keys)
2419
next_key = key_iter.next()
2420
stream = self.inventories.get_record_stream(keys, ordering, True)
1492
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2422
1494
for record in stream:
2423
1495
if record.storage_kind != 'absent':
2424
chunks = record.get_bytes_as('chunked')
2425
if order_as_requested:
2426
text_chunks[record.key] = chunks
2428
yield ''.join(chunks), record.key[-1]
1496
texts[record.key] = record.get_bytes_as('fulltext')
2430
1498
raise errors.NoSuchRevision(self, record.key)
2431
if order_as_requested:
2432
# Yield as many results as we can while preserving order.
2433
while next_key in text_chunks:
2434
chunks = text_chunks.pop(next_key)
2435
yield ''.join(chunks), next_key[-1]
2437
next_key = key_iter.next()
2438
except StopIteration:
2439
# We still want to fully consume the get_record_stream,
2440
# just in case it is not actually finished at this point
1500
yield texts[key], key[-1]
2444
def _deserialise_inventory(self, revision_id, xml):
2445
"""Transform the xml into an inventory object.
1502
def deserialise_inventory(self, revision_id, xml):
1503
"""Transform the xml into an inventory object.
2447
1505
:param revision_id: The expected revision id of the inventory.
2448
1506
:param xml: A serialised inventory.
2450
result = self._serializer.read_inventory_from_string(xml, revision_id,
2451
entry_cache=self._inventory_entry_cache,
2452
return_from_cache=self._safe_to_return_from_cache)
1508
result = self._serializer.read_inventory_from_string(xml, revision_id)
2453
1509
if result.revision_id != revision_id:
2454
1510
raise AssertionError('revision id mismatch %s != %s' % (
2455
1511
result.revision_id, revision_id))
1514
def serialise_inventory(self, inv):
1515
return self._serializer.write_inventory_to_string(inv)
1517
def _serialise_inventory_to_lines(self, inv):
1518
return self._serializer.write_inventory_to_lines(inv)
2458
1520
def get_serializer_format(self):
2459
1521
return self._serializer.format_num
2461
1523
@needs_read_lock
2462
def _get_inventory_xml(self, revision_id):
2463
"""Get serialized inventory as a string."""
2464
texts = self._iter_inventory_xmls([revision_id], 'unordered')
1524
def get_inventory_xml(self, revision_id):
1525
"""Get inventory XML as a file object."""
1526
texts = self._iter_inventory_xmls([revision_id])
2466
1528
text, revision_id = texts.next()
2467
1529
except StopIteration:
2468
1530
raise errors.HistoryMissing(self, 'inventory', revision_id)
2471
def get_rev_id_for_revno(self, revno, known_pair):
2472
"""Return the revision id of a revno, given a later (revno, revid)
2473
pair in the same history.
2475
:return: if found (True, revid). If the available history ran out
2476
before reaching the revno, then this returns
2477
(False, (closest_revno, closest_revid)).
1534
def get_inventory_sha1(self, revision_id):
1535
"""Return the sha1 hash of the inventory entry
2479
known_revno, known_revid = known_pair
2480
partial_history = [known_revid]
2481
distance_from_known = known_revno - revno
2482
if distance_from_known < 0:
2484
'requested revno (%d) is later than given known revno (%d)'
2485
% (revno, known_revno))
2488
self, partial_history, stop_index=distance_from_known)
2489
except errors.RevisionNotPresent, err:
2490
if err.revision_id == known_revid:
2491
# The start revision (known_revid) wasn't found.
2493
# This is a stacked repository with no fallbacks, or a there's a
2494
# left-hand ghost. Either way, even though the revision named in
2495
# the error isn't in this repo, we know it's the next step in this
2496
# left-hand history.
2497
partial_history.append(err.revision_id)
2498
if len(partial_history) <= distance_from_known:
2499
# Didn't find enough history to get a revid for the revno.
2500
earliest_revno = known_revno - len(partial_history) + 1
2501
return (False, (earliest_revno, partial_history[-1]))
2502
if len(partial_history) - 1 > distance_from_known:
2503
raise AssertionError('_iter_for_revno returned too much history')
2504
return (True, partial_history[-1])
1537
return self.get_revision(revision_id).inventory_sha1
2506
1539
def iter_reverse_revision_history(self, revision_id):
2507
1540
"""Iterate backwards through revision ids in the lefthand history
2622
1651
keys = tsort.topo_sort(parent_map)
2623
1652
return [None] + list(keys)
2625
def pack(self, hint=None, clean_obsolete_packs=False):
2626
1655
"""Compress the data within the repository.
2628
1657
This operation only makes sense for some repository types. For other
2629
1658
types it should be a no-op that just returns.
2631
1660
This stub method does not require a lock, but subclasses should use
2632
@needs_write_lock as this is a long running call its reasonable to
1661
@needs_write_lock as this is a long running call its reasonable to
2633
1662
implicitly lock for the user.
2635
:param hint: If not supplied, the whole repository is packed.
2636
If supplied, the repository may use the hint parameter as a
2637
hint for the parts of the repository to pack. A hint can be
2638
obtained from the result of commit_write_group(). Out of
2639
date hints are simply ignored, because concurrent operations
2640
can obsolete them rapidly.
2642
:param clean_obsolete_packs: Clean obsolete packs immediately after
1666
def print_file(self, file, revision_id):
1667
"""Print `file` to stdout.
1669
FIXME RBC 20060125 as John Meinel points out this is a bad api
1670
- it writes to stdout, it assumes that that is valid etc. Fix
1671
by creating a new more flexible convenience function.
1673
tree = self.revision_tree(revision_id)
1674
# use inventory as it was in that revision
1675
file_id = tree.inventory.path2id(file)
1677
# TODO: jam 20060427 Write a test for this code path
1678
# it had a bug in it, and was raising the wrong
1680
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1681
tree.print_file(file_id)
2646
1683
def get_transaction(self):
2647
1684
return self.control_files.get_transaction()
2649
def get_parent_map(self, revision_ids):
2650
"""See graph.StackedParentsProvider.get_parent_map"""
2651
# revisions index works in keys; this just works in revisions
2652
# therefore wrap and unwrap
2655
for revision_id in revision_ids:
1686
@deprecated_method(symbol_versioning.one_one)
1687
def get_parents(self, revision_ids):
1688
"""See StackedParentsProvider.get_parents"""
1689
parent_map = self.get_parent_map(revision_ids)
1690
return [parent_map.get(r, None) for r in revision_ids]
1692
def get_parent_map(self, keys):
1693
"""See graph._StackedParentsProvider.get_parent_map"""
1695
for revision_id in keys:
1696
if revision_id is None:
1697
raise ValueError('get_parent_map(None) is not valid')
2656
1698
if revision_id == _mod_revision.NULL_REVISION:
2657
result[revision_id] = ()
2658
elif revision_id is None:
2659
raise ValueError('get_parent_map(None) is not valid')
2661
query_keys.append((revision_id ,))
2662
for ((revision_id,), parent_keys) in \
2663
self.revisions.get_parent_map(query_keys).iteritems():
2665
result[revision_id] = tuple([parent_revid
2666
for (parent_revid,) in parent_keys])
2668
result[revision_id] = (_mod_revision.NULL_REVISION,)
1699
parent_map[revision_id] = ()
1702
parent_id_list = self.get_revision(revision_id).parent_ids
1703
except errors.NoSuchRevision:
1706
if len(parent_id_list) == 0:
1707
parent_ids = (_mod_revision.NULL_REVISION,)
1709
parent_ids = tuple(parent_id_list)
1710
parent_map[revision_id] = parent_ids
2671
1713
def _make_parents_provider(self):
2675
def get_known_graph_ancestry(self, revision_ids):
2676
"""Return the known graph for a set of revision ids and their ancestors.
2678
st = static_tuple.StaticTuple
2679
revision_keys = [st(r_id).intern() for r_id in revision_ids]
2680
known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
2681
return graph.GraphThunkIdsToKeys(known_graph)
2683
1716
def get_graph(self, other_repository=None):
2684
1717
"""Return the graph walker for this repository format"""
2685
1718
parents_provider = self._make_parents_provider()
2686
1719
if (other_repository is not None and
2687
1720
not self.has_same_location(other_repository)):
2688
parents_provider = graph.StackedParentsProvider(
1721
parents_provider = graph._StackedParentsProvider(
2689
1722
[parents_provider, other_repository._make_parents_provider()])
2690
1723
return graph.Graph(parents_provider)
2692
def _get_versioned_file_checker(self, text_key_references=None,
2694
"""Return an object suitable for checking versioned files.
2696
:param text_key_references: if non-None, an already built
2697
dictionary mapping text keys ((fileid, revision_id) tuples)
2698
to whether they were referred to by the inventory of the
2699
revision_id that they contain. If None, this will be
2701
:param ancestors: Optional result from
2702
self.get_graph().get_parent_map(self.all_revision_ids()) if already
2705
return _VersionedFileChecker(self,
2706
text_key_references=text_key_references, ancestors=ancestors)
1725
def _get_versioned_file_checker(self):
1726
"""Return an object suitable for checking versioned files."""
1727
return _VersionedFileChecker(self)
2708
1729
def revision_ids_to_search_result(self, result_set):
2709
1730
"""Convert a set of revision ids to a graph SearchResult."""
3740
2630
return self.source.revision_ids_to_search_result(result_set)
3743
class InterDifferingSerializer(InterRepository):
2633
class InterPackRepo(InterSameDataRepository):
2634
"""Optimised code paths between Pack based repositories."""
2637
def _get_repo_format_to_test(self):
2638
from bzrlib.repofmt import pack_repo
2639
return pack_repo.RepositoryFormatKnitPack1()
2642
def is_compatible(source, target):
2643
"""Be compatible with known Pack formats.
2645
We don't test for the stores being of specific types because that
2646
could lead to confusing results, and there is no need to be
2649
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2651
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2652
isinstance(target._format, RepositoryFormatPack))
2653
except AttributeError:
2655
return are_packs and InterRepository._same_model(source, target)
2658
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2659
"""See InterRepository.fetch()."""
2660
from bzrlib.repofmt.pack_repo import Packer
2661
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2662
self.source, self.source._format, self.target, self.target._format)
2663
self.count_copied = 0
2664
if revision_id is None:
2666
# everything to do - use pack logic
2667
# to fetch from all packs to one without
2668
# inventory parsing etc, IFF nothing to be copied is in the target.
2670
revision_ids = self.source.all_revision_ids()
2671
revision_keys = [(revid,) for revid in revision_ids]
2672
index = self.target._pack_collection.revision_index.combined_index
2673
present_revision_ids = set(item[1][0] for item in
2674
index.iter_entries(revision_keys))
2675
revision_ids = set(revision_ids) - present_revision_ids
2676
# implementing the TODO will involve:
2677
# - detecting when all of a pack is selected
2678
# - avoiding as much as possible pre-selection, so the
2679
# more-core routines such as create_pack_from_packs can filter in
2680
# a just-in-time fashion. (though having a HEADS list on a
2681
# repository might make this a lot easier, because we could
2682
# sensibly detect 'new revisions' without doing a full index scan.
2683
elif _mod_revision.is_null(revision_id):
2688
revision_ids = self.search_missing_revision_ids(revision_id,
2689
find_ghosts=find_ghosts).get_keys()
2690
except errors.NoSuchRevision:
2691
raise errors.InstallFailed([revision_id])
2692
if len(revision_ids) == 0:
2694
packs = self.source._pack_collection.all_packs()
2695
pack = Packer(self.target._pack_collection, packs, '.fetch',
2696
revision_ids).pack()
2697
if pack is not None:
2698
self.target._pack_collection._save_pack_names()
2699
# Trigger an autopack. This may duplicate effort as we've just done
2700
# a pack creation, but for now it is simpler to think about as
2701
# 'upload data, then repack if needed'.
2702
self.target._pack_collection.autopack()
2703
return (pack.get_revision_count(), [])
2708
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2709
"""See InterRepository.missing_revision_ids().
2711
:param find_ghosts: Find ghosts throughout the ancestry of
2714
if not find_ghosts and revision_id is not None:
2715
return self._walk_to_common_revisions([revision_id])
2716
elif revision_id is not None:
2717
source_ids = self.source.get_ancestry(revision_id)
2718
if source_ids[0] is not None:
2719
raise AssertionError()
2722
source_ids = self.source.all_revision_ids()
2723
# source_ids is the worst possible case we may need to pull.
2724
# now we want to filter source_ids against what we actually
2725
# have in target, but don't try to check for existence where we know
2726
# we do not have a revision as that would be pointless.
2727
target_ids = set(self.target.all_revision_ids())
2728
result_set = set(source_ids).difference(target_ids)
2729
return self.source.revision_ids_to_search_result(result_set)
2732
class InterModel1and2(InterRepository):
2735
def _get_repo_format_to_test(self):
2739
def is_compatible(source, target):
2740
if not source.supports_rich_root() and target.supports_rich_root():
2746
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2747
"""See InterRepository.fetch()."""
2748
from bzrlib.fetch import Model1toKnit2Fetcher
2749
f = Model1toKnit2Fetcher(to_repository=self.target,
2750
from_repository=self.source,
2751
last_revision=revision_id,
2752
pb=pb, find_ghosts=find_ghosts)
2753
return f.count_copied, f.failed_revisions
2756
def copy_content(self, revision_id=None):
2757
"""Make a complete copy of the content in self into destination.
2759
This is a destructive operation! Do not use it on existing
2762
:param revision_id: Only copy the content needed to construct
2763
revision_id and its parents.
2766
self.target.set_make_working_trees(self.source.make_working_trees())
2767
except NotImplementedError:
2769
# but don't bother fetching if we have the needed data now.
2770
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2771
self.target.has_revision(revision_id)):
2773
self.target.fetch(self.source, revision_id=revision_id)
2776
class InterKnit1and2(InterKnitRepo):
2779
def _get_repo_format_to_test(self):
2783
def is_compatible(source, target):
2784
"""Be compatible with Knit1 source and Knit3 target"""
2785
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit3
2787
from bzrlib.repofmt.knitrepo import (RepositoryFormatKnit1,
2788
RepositoryFormatKnit3)
2789
from bzrlib.repofmt.pack_repo import (
2790
RepositoryFormatKnitPack1,
2791
RepositoryFormatKnitPack3,
2792
RepositoryFormatPackDevelopment0,
2793
RepositoryFormatPackDevelopment0Subtree,
2796
RepositoryFormatKnit1,
2797
RepositoryFormatKnitPack1,
2798
RepositoryFormatPackDevelopment0,
2801
RepositoryFormatKnit3,
2802
RepositoryFormatKnitPack3,
2803
RepositoryFormatPackDevelopment0Subtree,
2805
return (isinstance(source._format, nosubtrees) and
2806
isinstance(target._format, subtrees))
2807
except AttributeError:
2811
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2812
"""See InterRepository.fetch()."""
2813
from bzrlib.fetch import Knit1to2Fetcher
2814
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2815
self.source, self.source._format, self.target,
2816
self.target._format)
2817
f = Knit1to2Fetcher(to_repository=self.target,
2818
from_repository=self.source,
2819
last_revision=revision_id,
2820
pb=pb, find_ghosts=find_ghosts)
2821
return f.count_copied, f.failed_revisions
2824
class InterDifferingSerializer(InterKnitRepo):
3746
2827
def _get_repo_format_to_test(self):
3750
2831
def is_compatible(source, target):
3751
2832
"""Be compatible with Knit2 source and Knit3 target"""
3752
# This is redundant with format.check_conversion_target(), however that
3753
# raises an exception, and we just want to say "False" as in we won't
3754
# support converting between these formats.
3755
if 'IDS_never' in debug.debug_flags:
3757
if source.supports_rich_root() and not target.supports_rich_root():
3759
if (source._format.supports_tree_reference
3760
and not target._format.supports_tree_reference):
3762
if target._fallback_repositories and target._format.supports_chks:
3763
# IDS doesn't know how to copy CHKs for the parent inventories it
3764
# adds to stacked repos.
3766
if 'IDS_always' in debug.debug_flags:
3768
# Only use this code path for local source and target. IDS does far
3769
# too much IO (both bandwidth and roundtrips) over a network.
3770
if not source.bzrdir.transport.base.startswith('file:///'):
3772
if not target.bzrdir.transport.base.startswith('file:///'):
2833
if source.supports_rich_root() != target.supports_rich_root():
2835
# Ideally, we'd support fetching if the source had no tree references
2836
# even if it supported them...
2837
if (getattr(source, '_format.supports_tree_reference', False) and
2838
not getattr(target, '_format.supports_tree_reference', False)):
3776
def _get_trees(self, revision_ids, cache):
3778
for rev_id in revision_ids:
3780
possible_trees.append((rev_id, cache[rev_id]))
3782
# Not cached, but inventory might be present anyway.
3784
tree = self.source.revision_tree(rev_id)
3785
except errors.NoSuchRevision:
3786
# Nope, parent is ghost.
3789
cache[rev_id] = tree
3790
possible_trees.append((rev_id, tree))
3791
return possible_trees
3793
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3794
"""Get the best delta and base for this revision.
3796
:return: (basis_id, delta)
3799
# Generate deltas against each tree, to find the shortest.
3800
texts_possibly_new_in_tree = set()
3801
for basis_id, basis_tree in possible_trees:
3802
delta = tree.inventory._make_delta(basis_tree.inventory)
3803
for old_path, new_path, file_id, new_entry in delta:
3804
if new_path is None:
3805
# This file_id isn't present in the new rev, so we don't
3809
# Rich roots are handled elsewhere...
3811
kind = new_entry.kind
3812
if kind != 'directory' and kind != 'file':
3813
# No text record associated with this inventory entry.
3815
# This is a directory or file that has changed somehow.
3816
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3817
deltas.append((len(delta), basis_id, delta))
3819
return deltas[0][1:]
3821
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3822
"""Find all parent revisions that are absent, but for which the
3823
inventory is present, and copy those inventories.
3825
This is necessary to preserve correctness when the source is stacked
3826
without fallbacks configured. (Note that in cases like upgrade the
3827
source may be not have _fallback_repositories even though it is
3831
for parents in parent_map.values():
3832
parent_revs.update(parents)
3833
present_parents = self.source.get_parent_map(parent_revs)
3834
absent_parents = set(parent_revs).difference(present_parents)
3835
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3836
(rev_id,) for rev_id in absent_parents)
3837
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3838
for parent_tree in self.source.revision_trees(parent_inv_ids):
3839
current_revision_id = parent_tree.get_revision_id()
3840
parents_parents_keys = parent_invs_keys_for_stacking[
3841
(current_revision_id,)]
3842
parents_parents = [key[-1] for key in parents_parents_keys]
3843
basis_id = _mod_revision.NULL_REVISION
3844
basis_tree = self.source.revision_tree(basis_id)
3845
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3846
self.target.add_inventory_by_delta(
3847
basis_id, delta, current_revision_id, parents_parents)
3848
cache[current_revision_id] = parent_tree
3850
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3851
"""Fetch across a few revisions.
3853
:param revision_ids: The revisions to copy
3854
:param basis_id: The revision_id of a tree that must be in cache, used
3855
as a basis for delta when no other base is available
3856
:param cache: A cache of RevisionTrees that we can use.
3857
:param a_graph: A Graph object to determine the heads() of the
3858
rich-root data stream.
3859
:return: The revision_id of the last converted tree. The RevisionTree
3860
for it will be in cache
3862
# Walk though all revisions; get inventory deltas, copy referenced
3863
# texts that delta references, insert the delta, revision and
3865
root_keys_to_create = set()
3868
pending_revisions = []
3869
parent_map = self.source.get_parent_map(revision_ids)
3870
self._fetch_parent_invs_for_stacking(parent_map, cache)
3871
self.source._safe_to_return_from_cache = True
3872
for tree in self.source.revision_trees(revision_ids):
3873
# Find a inventory delta for this revision.
3874
# Find text entries that need to be copied, too.
3875
current_revision_id = tree.get_revision_id()
3876
parent_ids = parent_map.get(current_revision_id, ())
3877
parent_trees = self._get_trees(parent_ids, cache)
3878
possible_trees = list(parent_trees)
3879
if len(possible_trees) == 0:
3880
# There either aren't any parents, or the parents are ghosts,
3881
# so just use the last converted tree.
3882
possible_trees.append((basis_id, cache[basis_id]))
3883
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3885
revision = self.source.get_revision(current_revision_id)
3886
pending_deltas.append((basis_id, delta,
3887
current_revision_id, revision.parent_ids))
3888
if self._converting_to_rich_root:
3889
self._revision_id_to_root_id[current_revision_id] = \
3891
# Determine which texts are in present in this revision but not in
3892
# any of the available parents.
3893
texts_possibly_new_in_tree = set()
3894
for old_path, new_path, file_id, entry in delta:
3895
if new_path is None:
3896
# This file_id isn't present in the new rev
3900
if not self.target.supports_rich_root():
3901
# The target doesn't support rich root, so we don't
3904
if self._converting_to_rich_root:
3905
# This can't be copied normally, we have to insert
3907
root_keys_to_create.add((file_id, entry.revision))
3910
texts_possibly_new_in_tree.add((file_id, entry.revision))
3911
for basis_id, basis_tree in possible_trees:
3912
basis_inv = basis_tree.inventory
3913
for file_key in list(texts_possibly_new_in_tree):
3914
file_id, file_revision = file_key
3916
entry = basis_inv[file_id]
3917
except errors.NoSuchId:
3919
if entry.revision == file_revision:
3920
texts_possibly_new_in_tree.remove(file_key)
3921
text_keys.update(texts_possibly_new_in_tree)
3922
pending_revisions.append(revision)
3923
cache[current_revision_id] = tree
3924
basis_id = current_revision_id
3925
self.source._safe_to_return_from_cache = False
3927
from_texts = self.source.texts
3928
to_texts = self.target.texts
3929
if root_keys_to_create:
3930
root_stream = _mod_fetch._new_root_data_stream(
3931
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3932
self.source, graph=a_graph)
3933
to_texts.insert_record_stream(root_stream)
3934
to_texts.insert_record_stream(from_texts.get_record_stream(
3935
text_keys, self.target._format._fetch_order,
3936
not self.target._format._fetch_uses_deltas))
3937
# insert inventory deltas
3938
for delta in pending_deltas:
3939
self.target.add_inventory_by_delta(*delta)
3940
if self.target._fallback_repositories:
3941
# Make sure this stacked repository has all the parent inventories
3942
# for the new revisions that we are about to insert. We do this
3943
# before adding the revisions so that no revision is added until
3944
# all the inventories it may depend on are added.
3945
# Note that this is overzealous, as we may have fetched these in an
3948
revision_ids = set()
3949
for revision in pending_revisions:
3950
revision_ids.add(revision.revision_id)
3951
parent_ids.update(revision.parent_ids)
3952
parent_ids.difference_update(revision_ids)
3953
parent_ids.discard(_mod_revision.NULL_REVISION)
3954
parent_map = self.source.get_parent_map(parent_ids)
3955
# we iterate over parent_map and not parent_ids because we don't
3956
# want to try copying any revision which is a ghost
3957
for parent_tree in self.source.revision_trees(parent_map):
3958
current_revision_id = parent_tree.get_revision_id()
3959
parents_parents = parent_map[current_revision_id]
3960
possible_trees = self._get_trees(parents_parents, cache)
3961
if len(possible_trees) == 0:
3962
# There either aren't any parents, or the parents are
3963
# ghosts, so just use the last converted tree.
3964
possible_trees.append((basis_id, cache[basis_id]))
3965
basis_id, delta = self._get_delta_for_revision(parent_tree,
3966
parents_parents, possible_trees)
3967
self.target.add_inventory_by_delta(
3968
basis_id, delta, current_revision_id, parents_parents)
3969
# insert signatures and revisions
3970
for revision in pending_revisions:
3972
signature = self.source.get_signature_text(
3973
revision.revision_id)
3974
self.target.add_signature_text(revision.revision_id,
3976
except errors.NoSuchRevision:
3978
self.target.add_revision(revision.revision_id, revision)
3981
def _fetch_all_revisions(self, revision_ids, pb):
3982
"""Fetch everything for the list of revisions.
3984
:param revision_ids: The list of revisions to fetch. Must be in
3986
:param pb: A ProgressTask
3989
basis_id, basis_tree = self._get_basis(revision_ids[0])
3991
cache = lru_cache.LRUCache(100)
3992
cache[basis_id] = basis_tree
3993
del basis_tree # We don't want to hang on to it here
3995
if self._converting_to_rich_root and len(revision_ids) > 100:
3996
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
4001
for offset in range(0, len(revision_ids), batch_size):
4002
self.target.start_write_group()
4004
pb.update('Transferring revisions', offset,
4006
batch = revision_ids[offset:offset+batch_size]
4007
basis_id = self._fetch_batch(batch, basis_id, cache,
4010
self.source._safe_to_return_from_cache = False
4011
self.target.abort_write_group()
4014
hint = self.target.commit_write_group()
4017
if hints and self.target._format.pack_compresses:
4018
self.target.pack(hint=hints)
4019
pb.update('Transferring revisions', len(revision_ids),
4022
2842
@needs_write_lock
4023
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
2843
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
4025
2844
"""See InterRepository.fetch()."""
4026
if fetch_spec is not None:
4027
raise AssertionError("Not implemented yet...")
4028
ui.ui_factory.warn_experimental_format_fetch(self)
4029
if (not self.source.supports_rich_root()
4030
and self.target.supports_rich_root()):
4031
self._converting_to_rich_root = True
4032
self._revision_id_to_root_id = {}
4034
self._converting_to_rich_root = False
4035
# See <https://launchpad.net/bugs/456077> asking for a warning here
4036
if self.source._format.network_name() != self.target._format.network_name():
4037
ui.ui_factory.show_user_warning('cross_format_fetch',
4038
from_format=self.source._format,
4039
to_format=self.target._format)
4040
2845
revision_ids = self.target.search_missing_revision_ids(self.source,
4041
2846
revision_id, find_ghosts=find_ghosts).get_keys()
4042
if not revision_ids:
4044
2847
revision_ids = tsort.topo_sort(
4045
2848
self.source.get_graph().get_parent_map(revision_ids))
4046
if not revision_ids:
4048
# Walk though all revisions; get inventory deltas, copy referenced
4049
# texts that delta references, insert the delta, revision and
2849
def revisions_iterator():
2850
for current_revision_id in revision_ids:
2851
revision = self.source.get_revision(current_revision_id)
2852
tree = self.source.revision_tree(current_revision_id)
2854
signature = self.source.get_signature_text(
2855
current_revision_id)
2856
except errors.NoSuchRevision:
2858
yield revision, tree, signature
4052
2860
my_pb = ui.ui_factory.nested_progress_bar()
4055
symbol_versioning.warn(
4056
symbol_versioning.deprecated_in((1, 14, 0))
4057
% "pb parameter to fetch()")
4060
self._fetch_all_revisions(revision_ids, pb)
2865
install_revisions(self.target, revisions_iterator(),
2866
len(revision_ids), pb)
4062
2868
if my_pb is not None:
4063
2869
my_pb.finished()
4064
2870
return len(revision_ids), 0
4066
def _get_basis(self, first_revision_id):
4067
"""Get a revision and tree which exists in the target.
4069
This assumes that first_revision_id is selected for transmission
4070
because all other ancestors are already present. If we can't find an
4071
ancestor we fall back to NULL_REVISION since we know that is safe.
4073
:return: (basis_id, basis_tree)
4075
first_rev = self.source.get_revision(first_revision_id)
4077
basis_id = first_rev.parent_ids[0]
4078
# only valid as a basis if the target has it
4079
self.target.get_revision(basis_id)
4080
# Try to get a basis tree - if its a ghost it will hit the
4081
# NoSuchRevision case.
4082
basis_tree = self.source.revision_tree(basis_id)
4083
except (IndexError, errors.NoSuchRevision):
4084
basis_id = _mod_revision.NULL_REVISION
4085
basis_tree = self.source.revision_tree(basis_id)
4086
return basis_id, basis_tree
2873
class InterOtherToRemote(InterRepository):
2875
def __init__(self, source, target):
2876
InterRepository.__init__(self, source, target)
2877
self._real_inter = None
2880
def is_compatible(source, target):
2881
if isinstance(target, remote.RemoteRepository):
2885
def _ensure_real_inter(self):
2886
if self._real_inter is None:
2887
self.target._ensure_real()
2888
real_target = self.target._real_repository
2889
self._real_inter = InterRepository.get(self.source, real_target)
2891
def copy_content(self, revision_id=None):
2892
self._ensure_real_inter()
2893
self._real_inter.copy_content(revision_id=revision_id)
2895
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2896
self._ensure_real_inter()
2897
self._real_inter.fetch(revision_id=revision_id, pb=pb,
2898
find_ghosts=find_ghosts)
2901
def _get_repo_format_to_test(self):
4089
2905
InterRepository.register_optimiser(InterDifferingSerializer)
4090
2906
InterRepository.register_optimiser(InterSameDataRepository)
4091
2907
InterRepository.register_optimiser(InterWeaveRepo)
4092
2908
InterRepository.register_optimiser(InterKnitRepo)
2909
InterRepository.register_optimiser(InterModel1and2)
2910
InterRepository.register_optimiser(InterKnit1and2)
2911
InterRepository.register_optimiser(InterPackRepo)
2912
InterRepository.register_optimiser(InterOtherToRemote)
4095
2915
class CopyConverter(object):
4096
2916
"""A repository conversion tool which just performs a copy of the content.
4098
2918
This is slow but quite reliable.
4251
3066
revision_graph[key] = tuple(parent for parent in parents if parent
4252
3067
in revision_graph)
4253
3068
return revision_graph
4256
class StreamSink(object):
4257
"""An object that can insert a stream into a repository.
4259
This interface handles the complexity of reserialising inventories and
4260
revisions from different formats, and allows unidirectional insertion into
4261
stacked repositories without looking for the missing basis parents
4265
def __init__(self, target_repo):
4266
self.target_repo = target_repo
4268
def insert_stream(self, stream, src_format, resume_tokens):
4269
"""Insert a stream's content into the target repository.
4271
:param src_format: a bzr repository format.
4273
:return: a list of resume tokens and an iterable of keys additional
4274
items required before the insertion can be completed.
4276
self.target_repo.lock_write()
4279
self.target_repo.resume_write_group(resume_tokens)
4282
self.target_repo.start_write_group()
4285
# locked_insert_stream performs a commit|suspend.
4286
return self._locked_insert_stream(stream, src_format, is_resume)
4288
self.target_repo.abort_write_group(suppress_errors=True)
4291
self.target_repo.unlock()
4293
def _locked_insert_stream(self, stream, src_format, is_resume):
4294
to_serializer = self.target_repo._format._serializer
4295
src_serializer = src_format._serializer
4297
if to_serializer == src_serializer:
4298
# If serializers match and the target is a pack repository, set the
4299
# write cache size on the new pack. This avoids poor performance
4300
# on transports where append is unbuffered (such as
4301
# RemoteTransport). This is safe to do because nothing should read
4302
# back from the target repository while a stream with matching
4303
# serialization is being inserted.
4304
# The exception is that a delta record from the source that should
4305
# be a fulltext may need to be expanded by the target (see
4306
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4307
# explicitly flush any buffered writes first in that rare case.
4309
new_pack = self.target_repo._pack_collection._new_pack
4310
except AttributeError:
4311
# Not a pack repository
4314
new_pack.set_write_cache_size(1024*1024)
4315
for substream_type, substream in stream:
4316
if 'stream' in debug.debug_flags:
4317
mutter('inserting substream: %s', substream_type)
4318
if substream_type == 'texts':
4319
self.target_repo.texts.insert_record_stream(substream)
4320
elif substream_type == 'inventories':
4321
if src_serializer == to_serializer:
4322
self.target_repo.inventories.insert_record_stream(
4325
self._extract_and_insert_inventories(
4326
substream, src_serializer)
4327
elif substream_type == 'inventory-deltas':
4328
self._extract_and_insert_inventory_deltas(
4329
substream, src_serializer)
4330
elif substream_type == 'chk_bytes':
4331
# XXX: This doesn't support conversions, as it assumes the
4332
# conversion was done in the fetch code.
4333
self.target_repo.chk_bytes.insert_record_stream(substream)
4334
elif substream_type == 'revisions':
4335
# This may fallback to extract-and-insert more often than
4336
# required if the serializers are different only in terms of
4338
if src_serializer == to_serializer:
4339
self.target_repo.revisions.insert_record_stream(
4342
self._extract_and_insert_revisions(substream,
4344
elif substream_type == 'signatures':
4345
self.target_repo.signatures.insert_record_stream(substream)
4347
raise AssertionError('kaboom! %s' % (substream_type,))
4348
# Done inserting data, and the missing_keys calculations will try to
4349
# read back from the inserted data, so flush the writes to the new pack
4350
# (if this is pack format).
4351
if new_pack is not None:
4352
new_pack._write_data('', flush=True)
4353
# Find all the new revisions (including ones from resume_tokens)
4354
missing_keys = self.target_repo.get_missing_parent_inventories(
4355
check_for_missing_texts=is_resume)
4357
for prefix, versioned_file in (
4358
('texts', self.target_repo.texts),
4359
('inventories', self.target_repo.inventories),
4360
('revisions', self.target_repo.revisions),
4361
('signatures', self.target_repo.signatures),
4362
('chk_bytes', self.target_repo.chk_bytes),
4364
if versioned_file is None:
4366
# TODO: key is often going to be a StaticTuple object
4367
# I don't believe we can define a method by which
4368
# (prefix,) + StaticTuple will work, though we could
4369
# define a StaticTuple.sq_concat that would allow you to
4370
# pass in either a tuple or a StaticTuple as the second
4371
# object, so instead we could have:
4372
# StaticTuple(prefix) + key here...
4373
missing_keys.update((prefix,) + key for key in
4374
versioned_file.get_missing_compression_parent_keys())
4375
except NotImplementedError:
4376
# cannot even attempt suspending, and missing would have failed
4377
# during stream insertion.
4378
missing_keys = set()
4381
# suspend the write group and tell the caller what we is
4382
# missing. We know we can suspend or else we would not have
4383
# entered this code path. (All repositories that can handle
4384
# missing keys can handle suspending a write group).
4385
write_group_tokens = self.target_repo.suspend_write_group()
4386
return write_group_tokens, missing_keys
4387
hint = self.target_repo.commit_write_group()
4388
if (to_serializer != src_serializer and
4389
self.target_repo._format.pack_compresses):
4390
self.target_repo.pack(hint=hint)
4393
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4394
target_rich_root = self.target_repo._format.rich_root_data
4395
target_tree_refs = self.target_repo._format.supports_tree_reference
4396
for record in substream:
4397
# Insert the delta directly
4398
inventory_delta_bytes = record.get_bytes_as('fulltext')
4399
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4401
parse_result = deserialiser.parse_text_bytes(
4402
inventory_delta_bytes)
4403
except inventory_delta.IncompatibleInventoryDelta, err:
4404
trace.mutter("Incompatible delta: %s", err.msg)
4405
raise errors.IncompatibleRevision(self.target_repo._format)
4406
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4407
revision_id = new_id
4408
parents = [key[0] for key in record.parents]
4409
self.target_repo.add_inventory_by_delta(
4410
basis_id, inv_delta, revision_id, parents)
4412
def _extract_and_insert_inventories(self, substream, serializer,
4414
"""Generate a new inventory versionedfile in target, converting data.
4416
The inventory is retrieved from the source, (deserializing it), and
4417
stored in the target (reserializing it in a different format).
4419
target_rich_root = self.target_repo._format.rich_root_data
4420
target_tree_refs = self.target_repo._format.supports_tree_reference
4421
for record in substream:
4422
# It's not a delta, so it must be a fulltext in the source
4423
# serializer's format.
4424
bytes = record.get_bytes_as('fulltext')
4425
revision_id = record.key[0]
4426
inv = serializer.read_inventory_from_string(bytes, revision_id)
4427
parents = [key[0] for key in record.parents]
4428
self.target_repo.add_inventory(revision_id, inv, parents)
4429
# No need to keep holding this full inv in memory when the rest of
4430
# the substream is likely to be all deltas.
4433
def _extract_and_insert_revisions(self, substream, serializer):
4434
for record in substream:
4435
bytes = record.get_bytes_as('fulltext')
4436
revision_id = record.key[0]
4437
rev = serializer.read_revision_from_string(bytes)
4438
if rev.revision_id != revision_id:
4439
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4440
self.target_repo.add_revision(revision_id, rev)
4443
if self.target_repo._format._fetch_reconcile:
4444
self.target_repo.reconcile()
4447
class StreamSource(object):
4448
"""A source of a stream for fetching between repositories."""
4450
def __init__(self, from_repository, to_format):
4451
"""Create a StreamSource streaming from from_repository."""
4452
self.from_repository = from_repository
4453
self.to_format = to_format
4455
def delta_on_metadata(self):
4456
"""Return True if delta's are permitted on metadata streams.
4458
That is on revisions and signatures.
4460
src_serializer = self.from_repository._format._serializer
4461
target_serializer = self.to_format._serializer
4462
return (self.to_format._fetch_uses_deltas and
4463
src_serializer == target_serializer)
4465
def _fetch_revision_texts(self, revs):
4466
# fetch signatures first and then the revision texts
4467
# may need to be a InterRevisionStore call here.
4468
from_sf = self.from_repository.signatures
4469
# A missing signature is just skipped.
4470
keys = [(rev_id,) for rev_id in revs]
4471
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4473
self.to_format._fetch_order,
4474
not self.to_format._fetch_uses_deltas))
4475
# If a revision has a delta, this is actually expanded inside the
4476
# insert_record_stream code now, which is an alternate fix for
4478
from_rf = self.from_repository.revisions
4479
revisions = from_rf.get_record_stream(
4481
self.to_format._fetch_order,
4482
not self.delta_on_metadata())
4483
return [('signatures', signatures), ('revisions', revisions)]
4485
def _generate_root_texts(self, revs):
4486
"""This will be called by get_stream between fetching weave texts and
4487
fetching the inventory weave.
4489
if self._rich_root_upgrade():
4490
return _mod_fetch.Inter1and2Helper(
4491
self.from_repository).generate_root_texts(revs)
4495
def get_stream(self, search):
4497
revs = search.get_keys()
4498
graph = self.from_repository.get_graph()
4499
revs = tsort.topo_sort(graph.get_parent_map(revs))
4500
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4502
for knit_kind, file_id, revisions in data_to_fetch:
4503
if knit_kind != phase:
4505
# Make a new progress bar for this phase
4506
if knit_kind == "file":
4507
# Accumulate file texts
4508
text_keys.extend([(file_id, revision) for revision in
4510
elif knit_kind == "inventory":
4511
# Now copy the file texts.
4512
from_texts = self.from_repository.texts
4513
yield ('texts', from_texts.get_record_stream(
4514
text_keys, self.to_format._fetch_order,
4515
not self.to_format._fetch_uses_deltas))
4516
# Cause an error if a text occurs after we have done the
4519
# Before we process the inventory we generate the root
4520
# texts (if necessary) so that the inventories references
4522
for _ in self._generate_root_texts(revs):
4524
# we fetch only the referenced inventories because we do not
4525
# know for unselected inventories whether all their required
4526
# texts are present in the other repository - it could be
4528
for info in self._get_inventory_stream(revs):
4530
elif knit_kind == "signatures":
4531
# Nothing to do here; this will be taken care of when
4532
# _fetch_revision_texts happens.
4534
elif knit_kind == "revisions":
4535
for record in self._fetch_revision_texts(revs):
4538
raise AssertionError("Unknown knit kind %r" % knit_kind)
4540
def get_stream_for_missing_keys(self, missing_keys):
4541
# missing keys can only occur when we are byte copying and not
4542
# translating (because translation means we don't send
4543
# unreconstructable deltas ever).
4545
keys['texts'] = set()
4546
keys['revisions'] = set()
4547
keys['inventories'] = set()
4548
keys['chk_bytes'] = set()
4549
keys['signatures'] = set()
4550
for key in missing_keys:
4551
keys[key[0]].add(key[1:])
4552
if len(keys['revisions']):
4553
# If we allowed copying revisions at this point, we could end up
4554
# copying a revision without copying its required texts: a
4555
# violation of the requirements for repository integrity.
4556
raise AssertionError(
4557
'cannot copy revisions to fill in missing deltas %s' % (
4558
keys['revisions'],))
4559
for substream_kind, keys in keys.iteritems():
4560
vf = getattr(self.from_repository, substream_kind)
4561
if vf is None and keys:
4562
raise AssertionError(
4563
"cannot fill in keys for a versioned file we don't"
4564
" have: %s needs %s" % (substream_kind, keys))
4566
# No need to stream something we don't have
4568
if substream_kind == 'inventories':
4569
# Some missing keys are genuinely ghosts, filter those out.
4570
present = self.from_repository.inventories.get_parent_map(keys)
4571
revs = [key[0] for key in present]
4572
# Get the inventory stream more-or-less as we do for the
4573
# original stream; there's no reason to assume that records
4574
# direct from the source will be suitable for the sink. (Think
4575
# e.g. 2a -> 1.9-rich-root).
4576
for info in self._get_inventory_stream(revs, missing=True):
4580
# Ask for full texts always so that we don't need more round trips
4581
# after this stream.
4582
# Some of the missing keys are genuinely ghosts, so filter absent
4583
# records. The Sink is responsible for doing another check to
4584
# ensure that ghosts don't introduce missing data for future
4586
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4587
self.to_format._fetch_order, True))
4588
yield substream_kind, stream
4590
def inventory_fetch_order(self):
4591
if self._rich_root_upgrade():
4592
return 'topological'
4594
return self.to_format._fetch_order
4596
def _rich_root_upgrade(self):
4597
return (not self.from_repository._format.rich_root_data and
4598
self.to_format.rich_root_data)
4600
def _get_inventory_stream(self, revision_ids, missing=False):
4601
from_format = self.from_repository._format
4602
if (from_format.supports_chks and self.to_format.supports_chks and
4603
from_format.network_name() == self.to_format.network_name()):
4604
raise AssertionError(
4605
"this case should be handled by GroupCHKStreamSource")
4606
elif 'forceinvdeltas' in debug.debug_flags:
4607
return self._get_convertable_inventory_stream(revision_ids,
4608
delta_versus_null=missing)
4609
elif from_format.network_name() == self.to_format.network_name():
4611
return self._get_simple_inventory_stream(revision_ids,
4613
elif (not from_format.supports_chks and not self.to_format.supports_chks
4614
and from_format._serializer == self.to_format._serializer):
4615
# Essentially the same format.
4616
return self._get_simple_inventory_stream(revision_ids,
4619
# Any time we switch serializations, we want to use an
4620
# inventory-delta based approach.
4621
return self._get_convertable_inventory_stream(revision_ids,
4622
delta_versus_null=missing)
4624
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4625
# NB: This currently reopens the inventory weave in source;
4626
# using a single stream interface instead would avoid this.
4627
from_weave = self.from_repository.inventories
4629
delta_closure = True
4631
delta_closure = not self.delta_on_metadata()
4632
yield ('inventories', from_weave.get_record_stream(
4633
[(rev_id,) for rev_id in revision_ids],
4634
self.inventory_fetch_order(), delta_closure))
4636
def _get_convertable_inventory_stream(self, revision_ids,
4637
delta_versus_null=False):
4638
# The two formats are sufficiently different that there is no fast
4639
# path, so we need to send just inventorydeltas, which any
4640
# sufficiently modern client can insert into any repository.
4641
# The StreamSink code expects to be able to
4642
# convert on the target, so we need to put bytes-on-the-wire that can
4643
# be converted. That means inventory deltas (if the remote is <1.19,
4644
# RemoteStreamSink will fallback to VFS to insert the deltas).
4645
yield ('inventory-deltas',
4646
self._stream_invs_as_deltas(revision_ids,
4647
delta_versus_null=delta_versus_null))
4649
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4650
"""Return a stream of inventory-deltas for the given rev ids.
4652
:param revision_ids: The list of inventories to transmit
4653
:param delta_versus_null: Don't try to find a minimal delta for this
4654
entry, instead compute the delta versus the NULL_REVISION. This
4655
effectively streams a complete inventory. Used for stuff like
4656
filling in missing parents, etc.
4658
from_repo = self.from_repository
4659
revision_keys = [(rev_id,) for rev_id in revision_ids]
4660
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4661
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4663
inventories = self.from_repository.iter_inventories(
4664
revision_ids, 'topological')
4665
format = from_repo._format
4666
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4667
inventory_cache = lru_cache.LRUCache(50)
4668
null_inventory = from_repo.revision_tree(
4669
_mod_revision.NULL_REVISION).inventory
4670
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4671
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4672
# repo back into a non-rich-root repo ought to be allowed)
4673
serializer = inventory_delta.InventoryDeltaSerializer(
4674
versioned_root=format.rich_root_data,
4675
tree_references=format.supports_tree_reference)
4676
for inv in inventories:
4677
key = (inv.revision_id,)
4678
parent_keys = parent_map.get(key, ())
4680
if not delta_versus_null and parent_keys:
4681
# The caller did not ask for complete inventories and we have
4682
# some parents that we can delta against. Make a delta against
4683
# each parent so that we can find the smallest.
4684
parent_ids = [parent_key[0] for parent_key in parent_keys]
4685
for parent_id in parent_ids:
4686
if parent_id not in invs_sent_so_far:
4687
# We don't know that the remote side has this basis, so
4690
if parent_id == _mod_revision.NULL_REVISION:
4691
parent_inv = null_inventory
4693
parent_inv = inventory_cache.get(parent_id, None)
4694
if parent_inv is None:
4695
parent_inv = from_repo.get_inventory(parent_id)
4696
candidate_delta = inv._make_delta(parent_inv)
4697
if (delta is None or
4698
len(delta) > len(candidate_delta)):
4699
delta = candidate_delta
4700
basis_id = parent_id
4702
# Either none of the parents ended up being suitable, or we
4703
# were asked to delta against NULL
4704
basis_id = _mod_revision.NULL_REVISION
4705
delta = inv._make_delta(null_inventory)
4706
invs_sent_so_far.add(inv.revision_id)
4707
inventory_cache[inv.revision_id] = inv
4708
delta_serialized = ''.join(
4709
serializer.delta_to_lines(basis_id, key[-1], delta))
4710
yield versionedfile.FulltextContentFactory(
4711
key, parent_keys, None, delta_serialized)
4714
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4715
stop_revision=None):
4716
"""Extend the partial history to include a given index
4718
If a stop_index is supplied, stop when that index has been reached.
4719
If a stop_revision is supplied, stop when that revision is
4720
encountered. Otherwise, stop when the beginning of history is
4723
:param stop_index: The index which should be present. When it is
4724
present, history extension will stop.
4725
:param stop_revision: The revision id which should be present. When
4726
it is encountered, history extension will stop.
4728
start_revision = partial_history_cache[-1]
4729
iterator = repo.iter_reverse_revision_history(start_revision)
4731
#skip the last revision in the list
4734
if (stop_index is not None and
4735
len(partial_history_cache) > stop_index):
4737
if partial_history_cache[-1] == stop_revision:
4739
revision_id = iterator.next()
4740
partial_history_cache.append(revision_id)
4741
except StopIteration:
added
removed
bzrlib/repository.py
