546
400
# unchanged, carry over.
547
401
ie.reference_revision = parent_entry.reference_revision
548
402
ie.revision = parent_entry.revision
549
return self._get_delta(ie, basis_inv, path), False, None
403
return self._get_delta(ie, basis_inv, path), False
550
404
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)
406
self._add_text_to_weave(ie.file_id, lines, heads, None)
556
408
raise NotImplementedError('unknown kind')
557
409
ie.revision = self._new_revision_id
558
self._any_changes = True
559
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]
410
return self._get_delta(ie, basis_inv, path), True
412
def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
413
versionedfile = self.repository.weave_store.get_weave_or_empty(
414
file_id, self.repository.get_transaction())
415
# Don't change this to add_lines - add_lines_with_ghosts is cheaper
416
# than add_lines, and allows committing when a parent is ghosted for
418
# Note: as we read the content directly from the tree, we know its not
419
# been turned into unicode or badly split - but a broken tree
420
# implementation could give us bad output from readlines() so this is
421
# not a guarantee of safety. What would be better is always checking
422
# the content during test suite execution. RBC 20070912
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]
424
return versionedfile.add_lines_with_ghosts(
425
self._new_revision_id, parents, new_lines,
426
nostore_sha=nostore_sha, random_id=self.random_revid,
427
check_content=False)[0:2]
429
versionedfile.clear_cache()
837
432
class RootCommitBuilder(CommitBuilder):
838
433
"""This commitbuilder actually records the root id"""
840
435
# the root entry gets versioned properly by this builder.
841
436
_versioned_root = True
974
def add_fallback_repository(self, repository):
975
"""Add a repository to use for looking up data not held locally.
977
:param repository: A repository.
979
if not self._format.supports_external_lookups:
980
raise errors.UnstackableRepositoryFormat(self._format, self.base)
982
# This repository will call fallback.unlock() when we transition to
983
# the unlocked state, so we make sure to increment the lock count
984
repository.lock_read()
985
self._check_fallback_repository(repository)
986
self._fallback_repositories.append(repository)
987
self.texts.add_fallback_versioned_files(repository.texts)
988
self.inventories.add_fallback_versioned_files(repository.inventories)
989
self.revisions.add_fallback_versioned_files(repository.revisions)
990
self.signatures.add_fallback_versioned_files(repository.signatures)
991
if self.chk_bytes is not None:
992
self.chk_bytes.add_fallback_versioned_files(repository.chk_bytes)
994
def _check_fallback_repository(self, repository):
995
"""Check that this repository can fallback to repository safely.
997
Raise an error if not.
999
:param repository: A repository to fallback to.
1001
return InterRepository._assert_same_model(self, repository)
1003
498
def add_inventory(self, revision_id, inv, parents):
1004
499
"""Add the inventory inv to the repository as revision_id.
1006
501
:param parents: The revision ids of the parents that revision_id
1007
502
is known to have and are in the repository already.
1009
504
:returns: The validator(which is a sha1 digest, though what is sha'd is
1010
505
repository format specific) of the serialized inventory.
1012
if not self.is_in_write_group():
1013
raise AssertionError("%r not in write group" % (self,))
507
assert self.is_in_write_group()
1014
508
_mod_revision.check_not_reserved_id(revision_id)
1015
if not (inv.revision_id is None or inv.revision_id == revision_id):
1016
raise AssertionError(
1017
"Mismatch between inventory revision"
1018
" id and insertion revid (%r, %r)"
1019
% (inv.revision_id, revision_id))
1020
if inv.root is None:
1021
raise AssertionError()
1022
return self._add_inventory_checked(revision_id, inv, parents)
1024
def _add_inventory_checked(self, revision_id, inv, parents):
1025
"""Add inv to the repository after checking the inputs.
1027
This function can be overridden to allow different inventory styles.
1029
:seealso: add_inventory, for the contract.
1031
inv_lines = self._serializer.write_inventory_to_lines(inv)
1032
return self._inventory_add_lines(revision_id, parents,
509
assert inv.revision_id is None or inv.revision_id == revision_id, \
510
"Mismatch between inventory revision" \
511
" id and insertion revid (%r, %r)" % (inv.revision_id, revision_id)
512
assert inv.root is not None
513
inv_lines = self._serialise_inventory_to_lines(inv)
514
inv_vf = self.get_inventory_weave()
515
return self._inventory_add_lines(inv_vf, revision_id, parents,
1033
516
inv_lines, check_content=False)
1035
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1036
parents, basis_inv=None, propagate_caches=False):
1037
"""Add a new inventory expressed as a delta against another revision.
1039
See the inventory developers documentation for the theory behind
1042
:param basis_revision_id: The inventory id the delta was created
1043
against. (This does not have to be a direct parent.)
1044
:param delta: The inventory delta (see Inventory.apply_delta for
1046
:param new_revision_id: The revision id that the inventory is being
1048
:param parents: The revision ids of the parents that revision_id is
1049
known to have and are in the repository already. These are supplied
1050
for repositories that depend on the inventory graph for revision
1051
graph access, as well as for those that pun ancestry with delta
1053
:param basis_inv: The basis inventory if it is already known,
1055
:param propagate_caches: If True, the caches for this inventory are
1056
copied to and updated for the result if possible.
1058
:returns: (validator, new_inv)
1059
The validator(which is a sha1 digest, though what is sha'd is
1060
repository format specific) of the serialized inventory, and the
1061
resulting inventory.
1063
if not self.is_in_write_group():
1064
raise AssertionError("%r not in write group" % (self,))
1065
_mod_revision.check_not_reserved_id(new_revision_id)
1066
basis_tree = self.revision_tree(basis_revision_id)
1067
basis_tree.lock_read()
1069
# Note that this mutates the inventory of basis_tree, which not all
1070
# inventory implementations may support: A better idiom would be to
1071
# return a new inventory, but as there is no revision tree cache in
1072
# repository this is safe for now - RBC 20081013
1073
if basis_inv is None:
1074
basis_inv = basis_tree.inventory
1075
basis_inv.apply_delta(delta)
1076
basis_inv.revision_id = new_revision_id
1077
return (self.add_inventory(new_revision_id, basis_inv, parents),
1082
def _inventory_add_lines(self, revision_id, parents, lines,
518
def _inventory_add_lines(self, inv_vf, revision_id, parents, lines,
1083
519
check_content=True):
1084
520
"""Store lines in inv_vf and return the sha1 of the inventory."""
1085
parents = [(parent,) for parent in parents]
1086
result = self.inventories.add_lines((revision_id,), parents, lines,
522
for parent in parents:
524
final_parents.append(parent)
525
return inv_vf.add_lines(revision_id, final_parents, lines,
1087
526
check_content=check_content)[0]
1088
self.inventories._access.flush()
1091
528
def add_revision(self, revision_id, rev, inv=None, config=None):
1092
529
"""Add rev to the revision store as revision_id.
1163
595
Returns a set of the present revisions.
1166
graph = self.get_graph()
1167
parent_map = graph.get_parent_map(revision_ids)
1168
# The old API returned a list, should this actually be a set?
1169
return parent_map.keys()
1171
def _check_inventories(self, checker):
1172
"""Check the inventories found from the revision scan.
1174
This is responsible for verifying the sha1 of inventories and
1175
creating a pending_keys set that covers data referenced by inventories.
1177
bar = ui.ui_factory.nested_progress_bar()
1179
self._do_check_inventories(checker, bar)
1183
def _do_check_inventories(self, checker, bar):
1184
"""Helper for _check_inventories."""
1186
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1187
kinds = ['chk_bytes', 'texts']
1188
count = len(checker.pending_keys)
1189
bar.update("inventories", 0, 2)
1190
current_keys = checker.pending_keys
1191
checker.pending_keys = {}
1192
# Accumulate current checks.
1193
for key in current_keys:
1194
if key[0] != 'inventories' and key[0] not in kinds:
1195
checker._report_items.append('unknown key type %r' % (key,))
1196
keys[key[0]].add(key[1:])
1197
if keys['inventories']:
1198
# NB: output order *should* be roughly sorted - topo or
1199
# inverse topo depending on repository - either way decent
1200
# to just delta against. However, pre-CHK formats didn't
1201
# try to optimise inventory layout on disk. As such the
1202
# pre-CHK code path does not use inventory deltas.
1204
for record in self.inventories.check(keys=keys['inventories']):
1205
if record.storage_kind == 'absent':
1206
checker._report_items.append(
1207
'Missing inventory {%s}' % (record.key,))
1209
last_object = self._check_record('inventories', record,
1210
checker, last_object,
1211
current_keys[('inventories',) + record.key])
1212
del keys['inventories']
1215
bar.update("texts", 1)
1216
while (checker.pending_keys or keys['chk_bytes']
1218
# Something to check.
1219
current_keys = checker.pending_keys
1220
checker.pending_keys = {}
1221
# Accumulate current checks.
1222
for key in current_keys:
1223
if key[0] not in kinds:
1224
checker._report_items.append('unknown key type %r' % (key,))
1225
keys[key[0]].add(key[1:])
1226
# Check the outermost kind only - inventories || chk_bytes || texts
1230
for record in getattr(self, kind).check(keys=keys[kind]):
1231
if record.storage_kind == 'absent':
1232
checker._report_items.append(
1233
'Missing %s {%s}' % (kind, record.key,))
1235
last_object = self._check_record(kind, record,
1236
checker, last_object, current_keys[(kind,) + record.key])
1240
def _check_record(self, kind, record, checker, last_object, item_data):
1241
"""Check a single text from this repository."""
1242
if kind == 'inventories':
1243
rev_id = record.key[0]
1244
inv = self._deserialise_inventory(rev_id,
1245
record.get_bytes_as('fulltext'))
1246
if last_object is not None:
1247
delta = inv._make_delta(last_object)
1248
for old_path, path, file_id, ie in delta:
1251
ie.check(checker, rev_id, inv)
1253
for path, ie in inv.iter_entries():
1254
ie.check(checker, rev_id, inv)
1255
if self._format.fast_deltas:
1257
elif kind == 'chk_bytes':
1258
# No code written to check chk_bytes for this repo format.
1259
checker._report_items.append(
1260
'unsupported key type chk_bytes for %s' % (record.key,))
1261
elif kind == 'texts':
1262
self._check_text(record, checker, item_data)
1264
checker._report_items.append(
1265
'unknown key type %s for %s' % (kind, record.key))
1267
def _check_text(self, record, checker, item_data):
1268
"""Check a single text."""
1269
# Check it is extractable.
1270
# TODO: check length.
1271
if record.storage_kind == 'chunked':
1272
chunks = record.get_bytes_as(record.storage_kind)
1273
sha1 = osutils.sha_strings(chunks)
1274
length = sum(map(len, chunks))
1276
content = record.get_bytes_as('fulltext')
1277
sha1 = osutils.sha_string(content)
1278
length = len(content)
1279
if item_data and sha1 != item_data[1]:
1280
checker._report_items.append(
1281
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1282
(record.key, sha1, item_data[1], item_data[2]))
598
for id in revision_ids:
599
if self.has_revision(id):
1285
604
def create(a_bzrdir):
1286
605
"""Construct the current default format repository in a_bzrdir."""
1287
606
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
1289
def __init__(self, _format, a_bzrdir, control_files):
608
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1290
609
"""instantiate a Repository.
1292
611
:param _format: The format of the repository on disk.
1293
612
:param a_bzrdir: The BzrDir of the repository.
614
In the future we will have a single api for all stores for
615
getting file texts, inventories and revisions, then
616
this construct will accept instances of those things.
1295
# In the future we will have a single api for all stores for
1296
# getting file texts, inventories and revisions, then
1297
# this construct will accept instances of those things.
1298
618
super(Repository, self).__init__()
1299
619
self._format = _format
1300
620
# the following are part of the public API for Repository:
1301
621
self.bzrdir = a_bzrdir
1302
622
self.control_files = control_files
1303
self._transport = control_files._transport
1304
self.base = self._transport.base
623
self._revision_store = _revision_store
624
# backwards compatibility
625
self.weave_store = text_store
1306
627
self._reconcile_does_inventory_gc = True
1307
628
self._reconcile_fixes_text_parents = False
1308
629
self._reconcile_backsup_inventory = True
630
# not right yet - should be more semantically clear ?
632
self.control_store = control_store
633
self.control_weaves = control_store
634
# TODO: make sure to construct the right store classes, etc, depending
635
# on whether escaping is required.
636
self._warn_if_deprecated()
1309
637
self._write_group = None
1310
# Additional places to query for data.
1311
self._fallback_repositories = []
1312
# An InventoryEntry cache, used during deserialization
1313
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1314
# Is it safe to return inventory entries directly from the entry cache,
1315
# rather copying them?
1316
self._safe_to_return_from_cache = False
1319
def user_transport(self):
1320
return self.bzrdir.user_transport
1323
def control_transport(self):
1324
return self._transport
638
self.base = control_files._transport.base
1326
640
def __repr__(self):
1327
if self._fallback_repositories:
1328
return '%s(%r, fallback_repositories=%r)' % (
1329
self.__class__.__name__,
1331
self._fallback_repositories)
1333
return '%s(%r)' % (self.__class__.__name__,
1336
def _has_same_fallbacks(self, other_repo):
1337
"""Returns true if the repositories have the same fallbacks."""
1338
my_fb = self._fallback_repositories
1339
other_fb = other_repo._fallback_repositories
1340
if len(my_fb) != len(other_fb):
1342
for f, g in zip(my_fb, other_fb):
1343
if not f.has_same_location(g):
641
return '%s(%r)' % (self.__class__.__name__,
1347
644
def has_same_location(self, other):
1348
645
"""Returns a boolean indicating if this repository is at the same
1554
911
"""Commit the contents accrued within the current write group.
1556
913
:seealso: start_write_group.
1558
:return: it may return an opaque hint that can be passed to 'pack'.
1560
915
if self._write_group is not self.get_transaction():
1561
916
# has an unlock or relock occured ?
1562
917
raise errors.BzrError('mismatched lock context %r and '
1563
918
'write group %r.' %
1564
919
(self.get_transaction(), self._write_group))
1565
result = self._commit_write_group()
920
self._commit_write_group()
1566
921
self._write_group = None
1569
923
def _commit_write_group(self):
1570
924
"""Template method for per-repository write group cleanup.
1572
This is called before the write group is considered to be
926
This is called before the write group is considered to be
1573
927
finished and should ensure that all data handed to the repository
1574
for writing during the write group is safely committed (to the
928
for writing during the write group is safely committed (to the
1575
929
extent possible considering file system caching etc).
1578
def suspend_write_group(self):
1579
raise errors.UnsuspendableWriteGroup(self)
1581
def get_missing_parent_inventories(self, check_for_missing_texts=True):
1582
"""Return the keys of missing inventory parents for revisions added in
1585
A revision is not complete if the inventory delta for that revision
1586
cannot be calculated. Therefore if the parent inventories of a
1587
revision are not present, the revision is incomplete, and e.g. cannot
1588
be streamed by a smart server. This method finds missing inventory
1589
parents for revisions added in this write group.
1591
if not self._format.supports_external_lookups:
1592
# This is only an issue for stacked repositories
1594
if not self.is_in_write_group():
1595
raise AssertionError('not in a write group')
1597
# XXX: We assume that every added revision already has its
1598
# corresponding inventory, so we only check for parent inventories that
1599
# might be missing, rather than all inventories.
1600
parents = set(self.revisions._index.get_missing_parents())
1601
parents.discard(_mod_revision.NULL_REVISION)
1602
unstacked_inventories = self.inventories._index
1603
present_inventories = unstacked_inventories.get_parent_map(
1604
key[-1:] for key in parents)
1605
parents.difference_update(present_inventories)
1606
if len(parents) == 0:
1607
# No missing parent inventories.
1609
if not check_for_missing_texts:
1610
return set(('inventories', rev_id) for (rev_id,) in parents)
1611
# Ok, now we have a list of missing inventories. But these only matter
1612
# if the inventories that reference them are missing some texts they
1613
# appear to introduce.
1614
# XXX: Texts referenced by all added inventories need to be present,
1615
# but at the moment we're only checking for texts referenced by
1616
# inventories at the graph's edge.
1617
key_deps = self.revisions._index._key_dependencies
1618
key_deps.satisfy_refs_for_keys(present_inventories)
1619
referrers = frozenset(r[0] for r in key_deps.get_referrers())
1620
file_ids = self.fileids_altered_by_revision_ids(referrers)
1621
missing_texts = set()
1622
for file_id, version_ids in file_ids.iteritems():
1623
missing_texts.update(
1624
(file_id, version_id) for version_id in version_ids)
1625
present_texts = self.texts.get_parent_map(missing_texts)
1626
missing_texts.difference_update(present_texts)
1627
if not missing_texts:
1628
# No texts are missing, so all revisions and their deltas are
1631
# Alternatively the text versions could be returned as the missing
1632
# keys, but this is likely to be less data.
1633
missing_keys = set(('inventories', rev_id) for (rev_id,) in parents)
1636
def refresh_data(self):
1637
"""Re-read any data needed to to synchronise with disk.
1639
This method is intended to be called after another repository instance
1640
(such as one used by a smart server) has inserted data into the
1641
repository. It may not be called during a write group, but may be
1642
called at any other time.
1644
if self.is_in_write_group():
1645
raise errors.InternalBzrError(
1646
"May not refresh_data while in a write group.")
1647
self._refresh_data()
1649
def resume_write_group(self, tokens):
1650
if not self.is_write_locked():
1651
raise errors.NotWriteLocked(self)
1652
if self._write_group:
1653
raise errors.BzrError('already in a write group')
1654
self._resume_write_group(tokens)
1655
# so we can detect unlock/relock - the write group is now entered.
1656
self._write_group = self.get_transaction()
1658
def _resume_write_group(self, tokens):
1659
raise errors.UnsuspendableWriteGroup(self)
1661
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False,
932
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False):
1663
933
"""Fetch the content required to construct revision_id from source.
1665
If revision_id is None and fetch_spec is None, then all content is
1668
fetch() may not be used when the repository is in a write group -
1669
either finish the current write group before using fetch, or use
1670
fetch before starting the write group.
935
If revision_id is None all content is copied.
1672
936
:param find_ghosts: Find and copy revisions in the source that are
1673
937
ghosts in the target (and not reachable directly by walking out to
1674
938
the first-present revision in target from revision_id).
1675
:param revision_id: If specified, all the content needed for this
1676
revision ID will be copied to the target. Fetch will determine for
1677
itself which content needs to be copied.
1678
:param fetch_spec: If specified, a SearchResult or
1679
PendingAncestryResult that describes which revisions to copy. This
1680
allows copying multiple heads at once. Mutually exclusive with
1683
if fetch_spec is not None and revision_id is not None:
1684
raise AssertionError(
1685
"fetch_spec and revision_id are mutually exclusive.")
1686
if self.is_in_write_group():
1687
raise errors.InternalBzrError(
1688
"May not fetch while in a write group.")
1689
940
# fast path same-url fetch operations
1690
# TODO: lift out to somewhere common with RemoteRepository
1691
# <https://bugs.edge.launchpad.net/bzr/+bug/401646>
1692
if (self.has_same_location(source)
1693
and fetch_spec is None
1694
and self._has_same_fallbacks(source)):
941
if self.has_same_location(source):
1695
942
# check that last_revision is in 'from' and then return a
1697
944
if (revision_id is not None and
1698
945
not _mod_revision.is_null(revision_id)):
1699
946
self.get_revision(revision_id)
1701
# if there is no specific appropriate InterRepository, this will get
1702
# the InterRepository base class, which raises an
1703
# IncompatibleRepositories when asked to fetch.
1704
948
inter = InterRepository.get(source, self)
1705
return inter.fetch(revision_id=revision_id, pb=pb,
1706
find_ghosts=find_ghosts, fetch_spec=fetch_spec)
950
return inter.fetch(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts)
951
except NotImplementedError:
952
raise errors.IncompatibleRepositories(source, self)
1708
954
def create_bundle(self, target, base, fileobj, format=None):
1709
955
return serializer.write_bundle(self, target, base, fileobj, format)
1860
1085
@needs_read_lock
1861
1086
def get_revisions(self, revision_ids):
1862
"""Get many revisions at once.
1864
Repositories that need to check data on every revision read should
1865
subclass this method.
1087
"""Get many revisions at once."""
1867
1088
return self._get_revisions(revision_ids)
1869
1090
@needs_read_lock
1870
1091
def _get_revisions(self, revision_ids):
1871
1092
"""Core work logic to get many revisions without sanity checks."""
1873
for revid, rev in self._iter_revisions(revision_ids):
1875
raise errors.NoSuchRevision(self, revid)
1877
return [revs[revid] for revid in revision_ids]
1879
def _iter_revisions(self, revision_ids):
1880
"""Iterate over revision objects.
1882
:param revision_ids: An iterable of revisions to examine. None may be
1883
passed to request all revisions known to the repository. Note that
1884
not all repositories can find unreferenced revisions; for those
1885
repositories only referenced ones will be returned.
1886
:return: An iterator of (revid, revision) tuples. Absent revisions (
1887
those asked for but not available) are returned as (revid, None).
1889
if revision_ids is None:
1890
revision_ids = self.all_revision_ids()
1892
for rev_id in revision_ids:
1893
if not rev_id or not isinstance(rev_id, basestring):
1894
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1895
keys = [(key,) for key in revision_ids]
1896
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1897
for record in stream:
1898
revid = record.key[0]
1899
if record.storage_kind == 'absent':
1902
text = record.get_bytes_as('fulltext')
1903
rev = self._serializer.read_revision_from_string(text)
1906
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1093
for rev_id in revision_ids:
1094
if not rev_id or not isinstance(rev_id, basestring):
1095
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1096
revs = self._revision_store.get_revisions(revision_ids,
1097
self.get_transaction())
1099
assert not isinstance(rev.revision_id, unicode)
1100
for parent_id in rev.parent_ids:
1101
assert not isinstance(parent_id, unicode)
1105
def get_revision_xml(self, revision_id):
1106
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1107
# would have already do it.
1108
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1109
rev = self.get_revision(revision_id)
1110
rev_tmp = StringIO()
1111
# the current serializer..
1112
self._revision_store._serializer.write_revision(rev, rev_tmp)
1114
return rev_tmp.getvalue()
1117
def get_deltas_for_revisions(self, revisions):
1907
1118
"""Produce a generator of revision deltas.
1909
1120
Note that the input is a sequence of REVISIONS, not revision_ids.
1910
1121
Trees will be held in memory until the generator exits.
1911
1122
Each delta is relative to the revision's lefthand predecessor.
1913
:param specific_fileids: if not None, the result is filtered
1914
so that only those file-ids, their parents and their
1915
children are included.
1917
# Get the revision-ids of interest
1918
1124
required_trees = set()
1919
1125
for revision in revisions:
1920
1126
required_trees.add(revision.revision_id)
1921
1127
required_trees.update(revision.parent_ids[:1])
1923
# Get the matching filtered trees. Note that it's more
1924
# efficient to pass filtered trees to changes_from() rather
1925
# than doing the filtering afterwards. changes_from() could
1926
# arguably do the filtering itself but it's path-based, not
1927
# file-id based, so filtering before or afterwards is
1929
if specific_fileids is None:
1930
trees = dict((t.get_revision_id(), t) for
1931
t in self.revision_trees(required_trees))
1933
trees = dict((t.get_revision_id(), t) for
1934
t in self._filtered_revision_trees(required_trees,
1937
# Calculate the deltas
1128
trees = dict((t.get_revision_id(), t) for
1129
t in self.revision_trees(required_trees))
1938
1130
for revision in revisions:
1939
1131
if not revision.parent_ids:
1940
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1132
old_tree = self.revision_tree(None)
1942
1134
old_tree = trees[revision.parent_ids[0]]
1943
1135
yield trees[revision.revision_id].changes_from(old_tree)
1945
1137
@needs_read_lock
1946
def get_revision_delta(self, revision_id, specific_fileids=None):
1138
def get_revision_delta(self, revision_id):
1947
1139
"""Return the delta for one revision.
1949
1141
The delta is relative to the left-hand predecessor of the
1952
:param specific_fileids: if not None, the result is filtered
1953
so that only those file-ids, their parents and their
1954
children are included.
1956
1144
r = self.get_revision(revision_id)
1957
return list(self.get_deltas_for_revisions([r],
1958
specific_fileids=specific_fileids))[0]
1145
return list(self.get_deltas_for_revisions([r]))[0]
1960
1147
@needs_write_lock
1961
1148
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
2061
1252
key = (file_id, revision_id)
2062
1253
setdefault(key, False)
2063
if revision_id == line_key[-1]:
1254
if revision_id == version_id:
2064
1255
result[key] = True
2067
def _inventory_xml_lines_for_keys(self, keys):
2068
"""Get a line iterator of the sort needed for findind references.
2070
Not relevant for non-xml inventory repositories.
2072
Ghosts in revision_keys are ignored.
2074
:param revision_keys: The revision keys for the inventories to inspect.
2075
:return: An iterator over (inventory line, revid) for the fulltexts of
2076
all of the xml inventories specified by revision_keys.
2078
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2079
for record in stream:
2080
if record.storage_kind != 'absent':
2081
chunks = record.get_bytes_as('chunked')
2082
revid = record.key[-1]
2083
lines = osutils.chunks_to_lines(chunks)
2087
1258
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
2089
1260
"""Helper routine for fileids_altered_by_revision_ids.
2091
1262
This performs the translation of xml lines to revision ids.
2093
1264
:param line_iterator: An iterator of lines, origin_version_id
2094
:param revision_keys: The revision ids to filter for. This should be a
1265
:param revision_ids: The revision ids to filter for. This should be a
2095
1266
set or other type which supports efficient __contains__ lookups, as
2096
the revision key from each parsed line will be looked up in the
2097
revision_keys filter.
1267
the revision id from each parsed line will be looked up in the
1268
revision_ids filter.
2098
1269
:return: a dictionary mapping altered file-ids to an iterable of
2099
1270
revision_ids. Each altered file-ids has the exact revision_ids that
2100
1271
altered it listed explicitly.
2102
seen = set(self._find_text_key_references_from_xml_inventory_lines(
2103
line_iterator).iterkeys())
2104
parent_keys = self._find_parent_keys_of_revisions(revision_keys)
2105
parent_seen = set(self._find_text_key_references_from_xml_inventory_lines(
2106
self._inventory_xml_lines_for_keys(parent_keys)))
2107
new_keys = seen - parent_seen
2109
1274
setdefault = result.setdefault
2110
for key in new_keys:
2111
setdefault(key[0], set()).add(key[-1])
1275
for file_id, revision_id in \
1276
self._find_text_key_references_from_xml_inventory_lines(
1277
line_iterator).iterkeys():
1278
# once data is all ensured-consistent; then this is
1279
# if revision_id == version_id
1280
if revision_id in revision_ids:
1281
setdefault(file_id, set()).add(revision_id)
2114
def _find_parent_ids_of_revisions(self, revision_ids):
2115
"""Find all parent ids that are mentioned in the revision graph.
2117
:return: set of revisions that are parents of revision_ids which are
2118
not part of revision_ids themselves
2120
parent_map = self.get_parent_map(revision_ids)
2122
map(parent_ids.update, parent_map.itervalues())
2123
parent_ids.difference_update(revision_ids)
2124
parent_ids.discard(_mod_revision.NULL_REVISION)
2127
def _find_parent_keys_of_revisions(self, revision_keys):
2128
"""Similar to _find_parent_ids_of_revisions, but used with keys.
2130
:param revision_keys: An iterable of revision_keys.
2131
:return: The parents of all revision_keys that are not already in
2134
parent_map = self.revisions.get_parent_map(revision_keys)
2136
map(parent_keys.update, parent_map.itervalues())
2137
parent_keys.difference_update(revision_keys)
2138
parent_keys.discard(_mod_revision.NULL_REVISION)
2141
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
1284
def fileids_altered_by_revision_ids(self, revision_ids):
2142
1285
"""Find the file ids and versions affected by revisions.
2144
1287
:param revisions: an iterable containing revision ids.
2145
:param _inv_weave: The inventory weave from this repository or None.
2146
If None, the inventory weave will be opened automatically.
2147
1288
:return: a dictionary mapping altered file-ids to an iterable of
2148
1289
revision_ids. Each altered file-ids has the exact revision_ids that
2149
1290
altered it listed explicitly.
2151
selected_keys = set((revid,) for revid in revision_ids)
2152
w = _inv_weave or self.inventories
2153
return self._find_file_ids_from_xml_inventory_lines(
2154
w.iter_lines_added_or_present_in_keys(
2155
selected_keys, pb=None),
1292
selected_revision_ids = set(revision_ids)
1293
w = self.get_inventory_weave()
1294
pb = ui.ui_factory.nested_progress_bar()
1296
return self._find_file_ids_from_xml_inventory_lines(
1297
w.iter_lines_added_or_present_in_versions(
1298
selected_revision_ids, pb=pb),
1299
selected_revision_ids)
2158
1303
def iter_files_bytes(self, desired_files):
2159
1304
"""Iterate through file versions.
2300
1443
versions). knit-kind is one of 'file', 'inventory', 'signatures',
2301
1444
'revisions'. file-id is None unless knit-kind is 'file'.
2303
for result in self._find_file_keys_to_fetch(revision_ids, _files_pb):
2306
for result in self._find_non_file_keys_to_fetch(revision_ids):
2309
def _find_file_keys_to_fetch(self, revision_ids, pb):
2310
1446
# XXX: it's a bit weird to control the inventory weave caching in this
2311
1447
# generator. Ideally the caching would be done in fetch.py I think. Or
2312
1448
# maybe this generator should explicitly have the contract that it
2313
1449
# should not be iterated until the previously yielded item has been
2315
inv_w = self.inventories
1452
inv_w = self.get_inventory_weave()
1453
inv_w.enable_cache()
2317
1455
# file ids that changed
2318
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
1456
file_ids = self.fileids_altered_by_revision_ids(revision_ids)
2320
1458
num_file_ids = len(file_ids)
2321
1459
for file_id, altered_versions in file_ids.iteritems():
2323
pb.update("Fetch texts", count, num_file_ids)
1460
if _files_pb is not None:
1461
_files_pb.update("fetch texts", count, num_file_ids)
2325
1463
yield ("file", file_id, altered_versions)
1464
# We're done with the files_pb. Note that it finished by the caller,
1465
# just as it was created by the caller.
2327
def _find_non_file_keys_to_fetch(self, revision_ids):
2329
1469
yield ("inventory", None, revision_ids)
2332
# XXX: Note ATM no callers actually pay attention to this return
2333
# instead they just use the list of revision ids and ignore
2334
# missing sigs. Consider removing this work entirely
2335
revisions_with_signatures = set(self.signatures.get_parent_map(
2336
[(r,) for r in revision_ids]))
2337
revisions_with_signatures = set(
2338
[r for (r,) in revisions_with_signatures])
2339
revisions_with_signatures.intersection_update(revision_ids)
1473
revisions_with_signatures = set()
1474
for rev_id in revision_ids:
1476
self.get_signature_text(rev_id)
1477
except errors.NoSuchRevision:
1481
revisions_with_signatures.add(rev_id)
2340
1483
yield ("signatures", None, revisions_with_signatures)
2343
1486
yield ("revisions", None, revision_ids)
2345
1488
@needs_read_lock
1489
def get_inventory_weave(self):
1490
return self.control_weaves.get_weave('inventory',
1491
self.get_transaction())
2346
1494
def get_inventory(self, revision_id):
2347
1495
"""Get Inventory object by revision id."""
2348
1496
return self.iter_inventories([revision_id]).next()
2350
def iter_inventories(self, revision_ids, ordering=None):
1498
def iter_inventories(self, revision_ids):
2351
1499
"""Get many inventories by revision_ids.
2353
1501
This will buffer some or all of the texts used in constructing the
2354
1502
inventories in memory, but will only parse a single inventory at a
2357
:param revision_ids: The expected revision ids of the inventories.
2358
:param ordering: optional ordering, e.g. 'topological'. If not
2359
specified, the order of revision_ids will be preserved (by
2360
buffering if necessary).
2361
1505
:return: An iterator of inventories.
2363
if ((None in revision_ids)
2364
or (_mod_revision.NULL_REVISION in revision_ids)):
2365
raise ValueError('cannot get null revision inventory')
2366
return self._iter_inventories(revision_ids, ordering)
1507
assert None not in revision_ids
1508
assert _mod_revision.NULL_REVISION not in revision_ids
1509
return self._iter_inventories(revision_ids)
2368
def _iter_inventories(self, revision_ids, ordering):
1511
def _iter_inventories(self, revision_ids):
2369
1512
"""single-document based inventory iteration."""
2370
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2371
for text, revision_id in inv_xmls:
2372
yield self._deserialise_inventory(revision_id, text)
2374
def _iter_inventory_xmls(self, revision_ids, ordering):
2375
if ordering is None:
2376
order_as_requested = True
2377
ordering = 'unordered'
2379
order_as_requested = False
2380
keys = [(revision_id,) for revision_id in revision_ids]
2383
if order_as_requested:
2384
key_iter = iter(keys)
2385
next_key = key_iter.next()
2386
stream = self.inventories.get_record_stream(keys, ordering, True)
2388
for record in stream:
2389
if record.storage_kind != 'absent':
2390
chunks = record.get_bytes_as('chunked')
2391
if order_as_requested:
2392
text_chunks[record.key] = chunks
2394
yield ''.join(chunks), record.key[-1]
2396
raise errors.NoSuchRevision(self, record.key)
2397
if order_as_requested:
2398
# Yield as many results as we can while preserving order.
2399
while next_key in text_chunks:
2400
chunks = text_chunks.pop(next_key)
2401
yield ''.join(chunks), next_key[-1]
2403
next_key = key_iter.next()
2404
except StopIteration:
2405
# We still want to fully consume the get_record_stream,
2406
# just in case it is not actually finished at this point
2410
def _deserialise_inventory(self, revision_id, xml):
2411
"""Transform the xml into an inventory object.
1513
texts = self.get_inventory_weave().get_texts(revision_ids)
1514
for text, revision_id in zip(texts, revision_ids):
1515
yield self.deserialise_inventory(revision_id, text)
1517
def deserialise_inventory(self, revision_id, xml):
1518
"""Transform the xml into an inventory object.
2413
1520
:param revision_id: The expected revision id of the inventory.
2414
1521
:param xml: A serialised inventory.
2416
result = self._serializer.read_inventory_from_string(xml, revision_id,
2417
entry_cache=self._inventory_entry_cache,
2418
return_from_cache=self._safe_to_return_from_cache)
1523
result = self._serializer.read_inventory_from_string(xml, revision_id)
2419
1524
if result.revision_id != revision_id:
2420
1525
raise AssertionError('revision id mismatch %s != %s' % (
2421
1526
result.revision_id, revision_id))
1529
def serialise_inventory(self, inv):
1530
return self._serializer.write_inventory_to_string(inv)
1532
def _serialise_inventory_to_lines(self, inv):
1533
return self._serializer.write_inventory_to_lines(inv)
2424
1535
def get_serializer_format(self):
2425
1536
return self._serializer.format_num
2427
1538
@needs_read_lock
2428
def _get_inventory_xml(self, revision_id):
2429
"""Get serialized inventory as a string."""
2430
texts = self._iter_inventory_xmls([revision_id], 'unordered')
1539
def get_inventory_xml(self, revision_id):
1540
"""Get inventory XML as a file object."""
2432
text, revision_id = texts.next()
2433
except StopIteration:
1542
assert isinstance(revision_id, str), type(revision_id)
1543
iw = self.get_inventory_weave()
1544
return iw.get_text(revision_id)
2434
1546
raise errors.HistoryMissing(self, 'inventory', revision_id)
2437
def get_rev_id_for_revno(self, revno, known_pair):
2438
"""Return the revision id of a revno, given a later (revno, revid)
2439
pair in the same history.
2441
:return: if found (True, revid). If the available history ran out
2442
before reaching the revno, then this returns
2443
(False, (closest_revno, closest_revid)).
2445
known_revno, known_revid = known_pair
2446
partial_history = [known_revid]
2447
distance_from_known = known_revno - revno
2448
if distance_from_known < 0:
2450
'requested revno (%d) is later than given known revno (%d)'
2451
% (revno, known_revno))
2454
self, partial_history, stop_index=distance_from_known)
2455
except errors.RevisionNotPresent, err:
2456
if err.revision_id == known_revid:
2457
# The start revision (known_revid) wasn't found.
2459
# This is a stacked repository with no fallbacks, or a there's a
2460
# left-hand ghost. Either way, even though the revision named in
2461
# the error isn't in this repo, we know it's the next step in this
2462
# left-hand history.
2463
partial_history.append(err.revision_id)
2464
if len(partial_history) <= distance_from_known:
2465
# Didn't find enough history to get a revid for the revno.
2466
earliest_revno = known_revno - len(partial_history) + 1
2467
return (False, (earliest_revno, partial_history[-1]))
2468
if len(partial_history) - 1 > distance_from_known:
2469
raise AssertionError('_iter_for_revno returned too much history')
2470
return (True, partial_history[-1])
1549
def get_inventory_sha1(self, revision_id):
1550
"""Return the sha1 hash of the inventory entry
1552
return self.get_revision(revision_id).inventory_sha1
1555
@deprecated_method(symbol_versioning.one_four)
1556
def get_revision_graph(self, revision_id=None):
1557
"""Return a dictionary containing the revision graph.
1559
NB: This method should not be used as it accesses the entire graph all
1560
at once, which is much more data than most operations should require.
1562
:param revision_id: The revision_id to get a graph from. If None, then
1563
the entire revision graph is returned. This is a deprecated mode of
1564
operation and will be removed in the future.
1565
:return: a dictionary of revision_id->revision_parents_list.
1567
raise NotImplementedError(self.get_revision_graph)
1570
@deprecated_method(symbol_versioning.one_three)
1571
def get_revision_graph_with_ghosts(self, revision_ids=None):
1572
"""Return a graph of the revisions with ghosts marked as applicable.
1574
:param revision_ids: an iterable of revisions to graph or None for all.
1575
:return: a Graph object with the graph reachable from revision_ids.
1577
if 'evil' in debug.debug_flags:
1579
"get_revision_graph_with_ghosts scales with size of history.")
1580
result = deprecated_graph.Graph()
1581
if not revision_ids:
1582
pending = set(self.all_revision_ids())
1585
pending = set(revision_ids)
1586
# special case NULL_REVISION
1587
if _mod_revision.NULL_REVISION in pending:
1588
pending.remove(_mod_revision.NULL_REVISION)
1589
required = set(pending)
1592
revision_id = pending.pop()
1594
rev = self.get_revision(revision_id)
1595
except errors.NoSuchRevision:
1596
if revision_id in required:
1599
result.add_ghost(revision_id)
1601
for parent_id in rev.parent_ids:
1602
# is this queued or done ?
1603
if (parent_id not in pending and
1604
parent_id not in done):
1606
pending.add(parent_id)
1607
result.add_node(revision_id, rev.parent_ids)
1608
done.add(revision_id)
2472
1611
def iter_reverse_revision_history(self, revision_id):
2473
1612
"""Iterate backwards through revision ids in the lefthand history
2509
1667
for repositories to maintain loaded indices across multiple locks
2510
1668
by checking inside their implementation of this method to see
2511
1669
whether their indices are still valid. This depends of course on
2512
the disk format being validatable in this manner. This method is
2513
also called by the refresh_data() public interface to cause a refresh
2514
to occur while in a write lock so that data inserted by a smart server
2515
push operation is visible on the client's instance of the physical
1670
the disk format being validatable in this manner.
2519
1673
@needs_read_lock
2520
1674
def revision_tree(self, revision_id):
2521
1675
"""Return Tree for a revision on this branch.
2523
`revision_id` may be NULL_REVISION for the empty tree revision.
1677
`revision_id` may be None for the empty tree revision.
2525
revision_id = _mod_revision.ensure_null(revision_id)
2526
1679
# TODO: refactor this to use an existing revision object
2527
1680
# so we don't need to read it in twice.
2528
if revision_id == _mod_revision.NULL_REVISION:
2529
return RevisionTree(self, Inventory(root_id=None),
1681
if revision_id is None or revision_id == _mod_revision.NULL_REVISION:
1682
return RevisionTree(self, Inventory(root_id=None),
2530
1683
_mod_revision.NULL_REVISION)
2532
inv = self.get_inventory(revision_id)
1685
inv = self.get_revision_inventory(revision_id)
2533
1686
return RevisionTree(self, inv, revision_id)
2535
1689
def revision_trees(self, revision_ids):
2536
"""Return Trees for revisions in this repository.
1690
"""Return Tree for a revision on this branch.
2538
:param revision_ids: a sequence of revision-ids;
2539
a revision-id may not be None or 'null:'
1692
`revision_id` may not be None or 'null:'"""
2541
1693
inventories = self.iter_inventories(revision_ids)
2542
1694
for inv in inventories:
2543
1695
yield RevisionTree(self, inv, inv.revision_id)
2545
def _filtered_revision_trees(self, revision_ids, file_ids):
2546
"""Return Tree for a revision on this branch with only some files.
2548
:param revision_ids: a sequence of revision-ids;
2549
a revision-id may not be None or 'null:'
2550
:param file_ids: if not None, the result is filtered
2551
so that only those file-ids, their parents and their
2552
children are included.
2554
inventories = self.iter_inventories(revision_ids)
2555
for inv in inventories:
2556
# Should we introduce a FilteredRevisionTree class rather
2557
# than pre-filter the inventory here?
2558
filtered_inv = inv.filter(file_ids)
2559
yield RevisionTree(self, filtered_inv, filtered_inv.revision_id)
2561
1697
@needs_read_lock
2562
1698
def get_ancestry(self, revision_id, topo_sorted=True):
2563
1699
"""Return a list of revision-ids integrated by a revision.
2565
The first element of the list is always None, indicating the origin
2566
revision. This might change when we have history horizons, or
1701
The first element of the list is always None, indicating the origin
1702
revision. This might change when we have history horizons, or
2567
1703
perhaps we should have a new API.
2569
1705
This is topologically sorted.
2571
1707
if _mod_revision.is_null(revision_id):
2573
1709
if not self.has_revision(revision_id):
2574
1710
raise errors.NoSuchRevision(self, revision_id)
2575
graph = self.get_graph()
2577
search = graph._make_breadth_first_searcher([revision_id])
2580
found, ghosts = search.next_with_ghosts()
2581
except StopIteration:
2584
if _mod_revision.NULL_REVISION in keys:
2585
keys.remove(_mod_revision.NULL_REVISION)
2587
parent_map = graph.get_parent_map(keys)
2588
keys = tsort.topo_sort(parent_map)
2589
return [None] + list(keys)
1711
w = self.get_inventory_weave()
1712
candidates = w.get_ancestry(revision_id, topo_sorted)
1713
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
2591
def pack(self, hint=None, clean_obsolete_packs=False):
2592
1716
"""Compress the data within the repository.
2594
1718
This operation only makes sense for some repository types. For other
2595
1719
types it should be a no-op that just returns.
2597
1721
This stub method does not require a lock, but subclasses should use
2598
@needs_write_lock as this is a long running call its reasonable to
1722
@needs_write_lock as this is a long running call its reasonable to
2599
1723
implicitly lock for the user.
2601
:param hint: If not supplied, the whole repository is packed.
2602
If supplied, the repository may use the hint parameter as a
2603
hint for the parts of the repository to pack. A hint can be
2604
obtained from the result of commit_write_group(). Out of
2605
date hints are simply ignored, because concurrent operations
2606
can obsolete them rapidly.
2608
:param clean_obsolete_packs: Clean obsolete packs immediately after
1727
def print_file(self, file, revision_id):
1728
"""Print `file` to stdout.
1730
FIXME RBC 20060125 as John Meinel points out this is a bad api
1731
- it writes to stdout, it assumes that that is valid etc. Fix
1732
by creating a new more flexible convenience function.
1734
tree = self.revision_tree(revision_id)
1735
# use inventory as it was in that revision
1736
file_id = tree.inventory.path2id(file)
1738
# TODO: jam 20060427 Write a test for this code path
1739
# it had a bug in it, and was raising the wrong
1741
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1742
tree.print_file(file_id)
2612
1744
def get_transaction(self):
2613
1745
return self.control_files.get_transaction()
2615
def get_parent_map(self, revision_ids):
2616
"""See graph.StackedParentsProvider.get_parent_map"""
2617
# revisions index works in keys; this just works in revisions
2618
# therefore wrap and unwrap
2621
for revision_id in revision_ids:
1747
def revision_parents(self, revision_id):
1748
return self.get_inventory_weave().parent_names(revision_id)
1750
@deprecated_method(symbol_versioning.one_one)
1751
def get_parents(self, revision_ids):
1752
"""See StackedParentsProvider.get_parents"""
1753
parent_map = self.get_parent_map(revision_ids)
1754
return [parent_map.get(r, None) for r in revision_ids]
1756
def get_parent_map(self, keys):
1757
"""See graph._StackedParentsProvider.get_parent_map"""
1759
for revision_id in keys:
2622
1760
if revision_id == _mod_revision.NULL_REVISION:
2623
result[revision_id] = ()
2624
elif revision_id is None:
2625
raise ValueError('get_parent_map(None) is not valid')
2627
query_keys.append((revision_id ,))
2628
for ((revision_id,), parent_keys) in \
2629
self.revisions.get_parent_map(query_keys).iteritems():
2631
result[revision_id] = tuple([parent_revid
2632
for (parent_revid,) in parent_keys])
2634
result[revision_id] = (_mod_revision.NULL_REVISION,)
1761
parent_map[revision_id] = ()
1764
parent_id_list = self.get_revision(revision_id).parent_ids
1765
except errors.NoSuchRevision:
1768
if len(parent_id_list) == 0:
1769
parent_ids = (_mod_revision.NULL_REVISION,)
1771
parent_ids = tuple(parent_id_list)
1772
parent_map[revision_id] = parent_ids
2637
1775
def _make_parents_provider(self):
2641
def get_known_graph_ancestry(self, revision_ids):
2642
"""Return the known graph for a set of revision ids and their ancestors.
2644
st = static_tuple.StaticTuple
2645
revision_keys = [st(r_id).intern() for r_id in revision_ids]
2646
known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
2647
return graph.GraphThunkIdsToKeys(known_graph)
2649
1778
def get_graph(self, other_repository=None):
2650
1779
"""Return the graph walker for this repository format"""
2651
1780
parents_provider = self._make_parents_provider()
2652
1781
if (other_repository is not None and
2653
1782
not self.has_same_location(other_repository)):
2654
parents_provider = graph.StackedParentsProvider(
1783
parents_provider = graph._StackedParentsProvider(
2655
1784
[parents_provider, other_repository._make_parents_provider()])
2656
1785
return graph.Graph(parents_provider)
2658
def _get_versioned_file_checker(self, text_key_references=None,
2660
"""Return an object suitable for checking versioned files.
2662
:param text_key_references: if non-None, an already built
2663
dictionary mapping text keys ((fileid, revision_id) tuples)
2664
to whether they were referred to by the inventory of the
2665
revision_id that they contain. If None, this will be
2667
:param ancestors: Optional result from
2668
self.get_graph().get_parent_map(self.all_revision_ids()) if already
2671
return _VersionedFileChecker(self,
2672
text_key_references=text_key_references, ancestors=ancestors)
1787
def _get_versioned_file_checker(self):
1788
"""Return an object suitable for checking versioned files."""
1789
return _VersionedFileChecker(self)
2674
1791
def revision_ids_to_search_result(self, result_set):
2675
1792
"""Convert a set of revision ids to a graph SearchResult."""
3570
2543
RepositoryFormat7)))
3571
2544
except AttributeError:
3574
2547
@needs_write_lock
3575
2548
def copy_content(self, revision_id=None):
3576
2549
"""See InterRepository.copy_content()."""
3577
2550
# weave specific optimised path:
3579
2552
self.target.set_make_working_trees(self.source.make_working_trees())
3580
except (errors.RepositoryUpgradeRequired, NotImplemented):
2553
except NotImplementedError:
3582
2555
# FIXME do not peek!
3583
if self.source._transport.listable():
2556
if self.source.control_files._transport.listable():
3584
2557
pb = ui.ui_factory.nested_progress_bar()
3586
self.target.texts.insert_record_stream(
3587
self.source.texts.get_record_stream(
3588
self.source.texts.keys(), 'topological', False))
3589
pb.update('Copying inventory', 0, 1)
3590
self.target.inventories.insert_record_stream(
3591
self.source.inventories.get_record_stream(
3592
self.source.inventories.keys(), 'topological', False))
3593
self.target.signatures.insert_record_stream(
3594
self.source.signatures.get_record_stream(
3595
self.source.signatures.keys(),
3597
self.target.revisions.insert_record_stream(
3598
self.source.revisions.get_record_stream(
3599
self.source.revisions.keys(),
3600
'topological', True))
2559
self.target.weave_store.copy_all_ids(
2560
self.source.weave_store,
2562
from_transaction=self.source.get_transaction(),
2563
to_transaction=self.target.get_transaction())
2564
pb.update('copying inventory', 0, 1)
2565
self.target.control_weaves.copy_multi(
2566
self.source.control_weaves, ['inventory'],
2567
from_transaction=self.source.get_transaction(),
2568
to_transaction=self.target.get_transaction())
2569
self.target._revision_store.text_store.copy_all_ids(
2570
self.source._revision_store.text_store,
3604
2575
self.target.fetch(self.source, revision_id=revision_id)
2578
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2579
"""See InterRepository.fetch()."""
2580
from bzrlib.fetch import GenericRepoFetcher
2581
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2582
self.source, self.source._format, self.target, self.target._format)
2583
f = GenericRepoFetcher(to_repository=self.target,
2584
from_repository=self.source,
2585
last_revision=revision_id,
2586
pb=pb, find_ghosts=find_ghosts)
2587
return f.count_copied, f.failed_revisions
3606
2589
@needs_read_lock
3607
2590
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
3608
2591
"""See InterRepository.missing_revision_ids()."""
3609
2592
# we want all revisions to satisfy revision_id in source.
3610
2593
# but we don't want to stat every file here and there.
3611
# we want then, all revisions other needs to satisfy revision_id
2594
# we want then, all revisions other needs to satisfy revision_id
3612
2595
# checked, but not those that we have locally.
3613
# so the first thing is to get a subset of the revisions to
2596
# so the first thing is to get a subset of the revisions to
3614
2597
# satisfy revision_id in source, and then eliminate those that
3615
# we do already have.
3616
# this is slow on high latency connection to self, but as this
3617
# disk format scales terribly for push anyway due to rewriting
2598
# we do already have.
2599
# this is slow on high latency connection to self, but as as this
2600
# disk format scales terribly for push anyway due to rewriting
3618
2601
# inventory.weave, this is considered acceptable.
3619
2602
# - RBC 20060209
3620
2603
if revision_id is not None:
3621
2604
source_ids = self.source.get_ancestry(revision_id)
3622
if source_ids[0] is not None:
3623
raise AssertionError()
2605
assert source_ids[0] is None
3624
2606
source_ids.pop(0)
3626
2608
source_ids = self.source._all_possible_ids()
3706
2699
return self.source.revision_ids_to_search_result(result_set)
3709
class InterDifferingSerializer(InterRepository):
2702
class InterPackRepo(InterSameDataRepository):
2703
"""Optimised code paths between Pack based repositories."""
2706
def _get_repo_format_to_test(self):
2707
from bzrlib.repofmt import pack_repo
2708
return pack_repo.RepositoryFormatKnitPack1()
2711
def is_compatible(source, target):
2712
"""Be compatible with known Pack formats.
2714
We don't test for the stores being of specific types because that
2715
could lead to confusing results, and there is no need to be
2718
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2720
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2721
isinstance(target._format, RepositoryFormatPack))
2722
except AttributeError:
2724
return are_packs and InterRepository._same_model(source, target)
2727
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2728
"""See InterRepository.fetch()."""
2729
from bzrlib.repofmt.pack_repo import Packer
2730
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2731
self.source, self.source._format, self.target, self.target._format)
2732
self.count_copied = 0
2733
if revision_id is None:
2735
# everything to do - use pack logic
2736
# to fetch from all packs to one without
2737
# inventory parsing etc, IFF nothing to be copied is in the target.
2739
revision_ids = self.source.all_revision_ids()
2740
# implementing the TODO will involve:
2741
# - detecting when all of a pack is selected
2742
# - avoiding as much as possible pre-selection, so the
2743
# more-core routines such as create_pack_from_packs can filter in
2744
# a just-in-time fashion. (though having a HEADS list on a
2745
# repository might make this a lot easier, because we could
2746
# sensibly detect 'new revisions' without doing a full index scan.
2747
elif _mod_revision.is_null(revision_id):
2752
revision_ids = self.search_missing_revision_ids(revision_id,
2753
find_ghosts=find_ghosts).get_keys()
2754
except errors.NoSuchRevision:
2755
raise errors.InstallFailed([revision_id])
2756
packs = self.source._pack_collection.all_packs()
2757
pack = Packer(self.target._pack_collection, packs, '.fetch',
2758
revision_ids).pack()
2759
if pack is not None:
2760
self.target._pack_collection._save_pack_names()
2761
# Trigger an autopack. This may duplicate effort as we've just done
2762
# a pack creation, but for now it is simpler to think about as
2763
# 'upload data, then repack if needed'.
2764
self.target._pack_collection.autopack()
2765
return (pack.get_revision_count(), [])
2770
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2771
"""See InterRepository.missing_revision_ids().
2773
:param find_ghosts: Find ghosts throughout the ancestry of
2776
if not find_ghosts and revision_id is not None:
2777
return self._walk_to_common_revisions([revision_id])
2778
elif revision_id is not None:
2779
source_ids = self.source.get_ancestry(revision_id)
2780
assert source_ids[0] is None
2783
source_ids = self.source.all_revision_ids()
2784
# source_ids is the worst possible case we may need to pull.
2785
# now we want to filter source_ids against what we actually
2786
# have in target, but don't try to check for existence where we know
2787
# we do not have a revision as that would be pointless.
2788
target_ids = set(self.target.all_revision_ids())
2789
result_set = set(source_ids).difference(target_ids)
2790
return self.source.revision_ids_to_search_result(result_set)
2793
class InterModel1and2(InterRepository):
2796
def _get_repo_format_to_test(self):
2800
def is_compatible(source, target):
2801
if not source.supports_rich_root() and target.supports_rich_root():
2807
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2808
"""See InterRepository.fetch()."""
2809
from bzrlib.fetch import Model1toKnit2Fetcher
2810
f = Model1toKnit2Fetcher(to_repository=self.target,
2811
from_repository=self.source,
2812
last_revision=revision_id,
2813
pb=pb, find_ghosts=find_ghosts)
2814
return f.count_copied, f.failed_revisions
2817
def copy_content(self, revision_id=None):
2818
"""Make a complete copy of the content in self into destination.
2820
This is a destructive operation! Do not use it on existing
2823
:param revision_id: Only copy the content needed to construct
2824
revision_id and its parents.
2827
self.target.set_make_working_trees(self.source.make_working_trees())
2828
except NotImplementedError:
2830
# but don't bother fetching if we have the needed data now.
2831
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2832
self.target.has_revision(revision_id)):
2834
self.target.fetch(self.source, revision_id=revision_id)
2837
class InterKnit1and2(InterKnitRepo):
2840
def _get_repo_format_to_test(self):
2844
def is_compatible(source, target):
2845
"""Be compatible with Knit1 source and Knit3 target"""
2846
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit3
2848
from bzrlib.repofmt.knitrepo import (RepositoryFormatKnit1,
2849
RepositoryFormatKnit3)
2850
from bzrlib.repofmt.pack_repo import (
2851
RepositoryFormatKnitPack1,
2852
RepositoryFormatKnitPack3,
2853
RepositoryFormatPackDevelopment0,
2854
RepositoryFormatPackDevelopment0Subtree,
2857
RepositoryFormatKnit1,
2858
RepositoryFormatKnitPack1,
2859
RepositoryFormatPackDevelopment0,
2862
RepositoryFormatKnit3,
2863
RepositoryFormatKnitPack3,
2864
RepositoryFormatPackDevelopment0Subtree,
2866
return (isinstance(source._format, nosubtrees) and
2867
isinstance(target._format, subtrees))
2868
except AttributeError:
2872
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2873
"""See InterRepository.fetch()."""
2874
from bzrlib.fetch import Knit1to2Fetcher
2875
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2876
self.source, self.source._format, self.target,
2877
self.target._format)
2878
f = Knit1to2Fetcher(to_repository=self.target,
2879
from_repository=self.source,
2880
last_revision=revision_id,
2881
pb=pb, find_ghosts=find_ghosts)
2882
return f.count_copied, f.failed_revisions
2885
class InterDifferingSerializer(InterKnitRepo):
3712
2888
def _get_repo_format_to_test(self):
3716
2892
def is_compatible(source, target):
3717
2893
"""Be compatible with Knit2 source and Knit3 target"""
3718
# This is redundant with format.check_conversion_target(), however that
3719
# raises an exception, and we just want to say "False" as in we won't
3720
# support converting between these formats.
3721
if 'IDS_never' in debug.debug_flags:
3723
if source.supports_rich_root() and not target.supports_rich_root():
3725
if (source._format.supports_tree_reference
3726
and not target._format.supports_tree_reference):
3728
if target._fallback_repositories and target._format.supports_chks:
3729
# IDS doesn't know how to copy CHKs for the parent inventories it
3730
# adds to stacked repos.
3732
if 'IDS_always' in debug.debug_flags:
3734
# Only use this code path for local source and target. IDS does far
3735
# too much IO (both bandwidth and roundtrips) over a network.
3736
if not source.bzrdir.transport.base.startswith('file:///'):
3738
if not target.bzrdir.transport.base.startswith('file:///'):
2894
if source.supports_rich_root() != target.supports_rich_root():
2896
# Ideally, we'd support fetching if the source had no tree references
2897
# even if it supported them...
2898
if (getattr(source, '_format.supports_tree_reference', False) and
2899
not getattr(target, '_format.supports_tree_reference', False)):
3742
def _get_trees(self, revision_ids, cache):
3744
for rev_id in revision_ids:
3746
possible_trees.append((rev_id, cache[rev_id]))
3748
# Not cached, but inventory might be present anyway.
3750
tree = self.source.revision_tree(rev_id)
3751
except errors.NoSuchRevision:
3752
# Nope, parent is ghost.
3755
cache[rev_id] = tree
3756
possible_trees.append((rev_id, tree))
3757
return possible_trees
3759
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3760
"""Get the best delta and base for this revision.
3762
:return: (basis_id, delta)
3765
# Generate deltas against each tree, to find the shortest.
3766
texts_possibly_new_in_tree = set()
3767
for basis_id, basis_tree in possible_trees:
3768
delta = tree.inventory._make_delta(basis_tree.inventory)
3769
for old_path, new_path, file_id, new_entry in delta:
3770
if new_path is None:
3771
# This file_id isn't present in the new rev, so we don't
3775
# Rich roots are handled elsewhere...
3777
kind = new_entry.kind
3778
if kind != 'directory' and kind != 'file':
3779
# No text record associated with this inventory entry.
3781
# This is a directory or file that has changed somehow.
3782
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3783
deltas.append((len(delta), basis_id, delta))
3785
return deltas[0][1:]
3787
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3788
"""Find all parent revisions that are absent, but for which the
3789
inventory is present, and copy those inventories.
3791
This is necessary to preserve correctness when the source is stacked
3792
without fallbacks configured. (Note that in cases like upgrade the
3793
source may be not have _fallback_repositories even though it is
3797
for parents in parent_map.values():
3798
parent_revs.update(parents)
3799
present_parents = self.source.get_parent_map(parent_revs)
3800
absent_parents = set(parent_revs).difference(present_parents)
3801
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3802
(rev_id,) for rev_id in absent_parents)
3803
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3804
for parent_tree in self.source.revision_trees(parent_inv_ids):
3805
current_revision_id = parent_tree.get_revision_id()
3806
parents_parents_keys = parent_invs_keys_for_stacking[
3807
(current_revision_id,)]
3808
parents_parents = [key[-1] for key in parents_parents_keys]
3809
basis_id = _mod_revision.NULL_REVISION
3810
basis_tree = self.source.revision_tree(basis_id)
3811
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3812
self.target.add_inventory_by_delta(
3813
basis_id, delta, current_revision_id, parents_parents)
3814
cache[current_revision_id] = parent_tree
3816
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3817
"""Fetch across a few revisions.
3819
:param revision_ids: The revisions to copy
3820
:param basis_id: The revision_id of a tree that must be in cache, used
3821
as a basis for delta when no other base is available
3822
:param cache: A cache of RevisionTrees that we can use.
3823
:param a_graph: A Graph object to determine the heads() of the
3824
rich-root data stream.
3825
:return: The revision_id of the last converted tree. The RevisionTree
3826
for it will be in cache
3828
# Walk though all revisions; get inventory deltas, copy referenced
3829
# texts that delta references, insert the delta, revision and
3831
root_keys_to_create = set()
3834
pending_revisions = []
3835
parent_map = self.source.get_parent_map(revision_ids)
3836
self._fetch_parent_invs_for_stacking(parent_map, cache)
3837
self.source._safe_to_return_from_cache = True
3838
for tree in self.source.revision_trees(revision_ids):
3839
# Find a inventory delta for this revision.
3840
# Find text entries that need to be copied, too.
3841
current_revision_id = tree.get_revision_id()
3842
parent_ids = parent_map.get(current_revision_id, ())
3843
parent_trees = self._get_trees(parent_ids, cache)
3844
possible_trees = list(parent_trees)
3845
if len(possible_trees) == 0:
3846
# There either aren't any parents, or the parents are ghosts,
3847
# so just use the last converted tree.
3848
possible_trees.append((basis_id, cache[basis_id]))
3849
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3851
revision = self.source.get_revision(current_revision_id)
3852
pending_deltas.append((basis_id, delta,
3853
current_revision_id, revision.parent_ids))
3854
if self._converting_to_rich_root:
3855
self._revision_id_to_root_id[current_revision_id] = \
3857
# Determine which texts are in present in this revision but not in
3858
# any of the available parents.
3859
texts_possibly_new_in_tree = set()
3860
for old_path, new_path, file_id, entry in delta:
3861
if new_path is None:
3862
# This file_id isn't present in the new rev
3866
if not self.target.supports_rich_root():
3867
# The target doesn't support rich root, so we don't
3870
if self._converting_to_rich_root:
3871
# This can't be copied normally, we have to insert
3873
root_keys_to_create.add((file_id, entry.revision))
3876
texts_possibly_new_in_tree.add((file_id, entry.revision))
3877
for basis_id, basis_tree in possible_trees:
3878
basis_inv = basis_tree.inventory
3879
for file_key in list(texts_possibly_new_in_tree):
3880
file_id, file_revision = file_key
3882
entry = basis_inv[file_id]
3883
except errors.NoSuchId:
3885
if entry.revision == file_revision:
3886
texts_possibly_new_in_tree.remove(file_key)
3887
text_keys.update(texts_possibly_new_in_tree)
3888
pending_revisions.append(revision)
3889
cache[current_revision_id] = tree
3890
basis_id = current_revision_id
3891
self.source._safe_to_return_from_cache = False
3893
from_texts = self.source.texts
3894
to_texts = self.target.texts
3895
if root_keys_to_create:
3896
root_stream = _mod_fetch._new_root_data_stream(
3897
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3898
self.source, graph=a_graph)
3899
to_texts.insert_record_stream(root_stream)
3900
to_texts.insert_record_stream(from_texts.get_record_stream(
3901
text_keys, self.target._format._fetch_order,
3902
not self.target._format._fetch_uses_deltas))
3903
# insert inventory deltas
3904
for delta in pending_deltas:
3905
self.target.add_inventory_by_delta(*delta)
3906
if self.target._fallback_repositories:
3907
# Make sure this stacked repository has all the parent inventories
3908
# for the new revisions that we are about to insert. We do this
3909
# before adding the revisions so that no revision is added until
3910
# all the inventories it may depend on are added.
3911
# Note that this is overzealous, as we may have fetched these in an
3914
revision_ids = set()
3915
for revision in pending_revisions:
3916
revision_ids.add(revision.revision_id)
3917
parent_ids.update(revision.parent_ids)
3918
parent_ids.difference_update(revision_ids)
3919
parent_ids.discard(_mod_revision.NULL_REVISION)
3920
parent_map = self.source.get_parent_map(parent_ids)
3921
# we iterate over parent_map and not parent_ids because we don't
3922
# want to try copying any revision which is a ghost
3923
for parent_tree in self.source.revision_trees(parent_map):
3924
current_revision_id = parent_tree.get_revision_id()
3925
parents_parents = parent_map[current_revision_id]
3926
possible_trees = self._get_trees(parents_parents, cache)
3927
if len(possible_trees) == 0:
3928
# There either aren't any parents, or the parents are
3929
# ghosts, so just use the last converted tree.
3930
possible_trees.append((basis_id, cache[basis_id]))
3931
basis_id, delta = self._get_delta_for_revision(parent_tree,
3932
parents_parents, possible_trees)
3933
self.target.add_inventory_by_delta(
3934
basis_id, delta, current_revision_id, parents_parents)
3935
# insert signatures and revisions
3936
for revision in pending_revisions:
3938
signature = self.source.get_signature_text(
3939
revision.revision_id)
3940
self.target.add_signature_text(revision.revision_id,
3942
except errors.NoSuchRevision:
3944
self.target.add_revision(revision.revision_id, revision)
3947
def _fetch_all_revisions(self, revision_ids, pb):
3948
"""Fetch everything for the list of revisions.
3950
:param revision_ids: The list of revisions to fetch. Must be in
3952
:param pb: A ProgressTask
3955
basis_id, basis_tree = self._get_basis(revision_ids[0])
3957
cache = lru_cache.LRUCache(100)
3958
cache[basis_id] = basis_tree
3959
del basis_tree # We don't want to hang on to it here
3961
if self._converting_to_rich_root and len(revision_ids) > 100:
3962
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3967
for offset in range(0, len(revision_ids), batch_size):
3968
self.target.start_write_group()
3970
pb.update('Transferring revisions', offset,
3972
batch = revision_ids[offset:offset+batch_size]
3973
basis_id = self._fetch_batch(batch, basis_id, cache,
3976
self.source._safe_to_return_from_cache = False
3977
self.target.abort_write_group()
3980
hint = self.target.commit_write_group()
3983
if hints and self.target._format.pack_compresses:
3984
self.target.pack(hint=hints)
3985
pb.update('Transferring revisions', len(revision_ids),
3988
2903
@needs_write_lock
3989
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
2904
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3991
2905
"""See InterRepository.fetch()."""
3992
if fetch_spec is not None:
3993
raise AssertionError("Not implemented yet...")
3994
ui.ui_factory.warn_experimental_format_fetch(self)
3995
if (not self.source.supports_rich_root()
3996
and self.target.supports_rich_root()):
3997
self._converting_to_rich_root = True
3998
self._revision_id_to_root_id = {}
4000
self._converting_to_rich_root = False
4001
# See <https://launchpad.net/bugs/456077> asking for a warning here
4002
if self.source._format.network_name() != self.target._format.network_name():
4003
ui.ui_factory.show_user_warning('cross_format_fetch',
4004
from_format=self.source._format,
4005
to_format=self.target._format)
4006
2906
revision_ids = self.target.search_missing_revision_ids(self.source,
4007
2907
revision_id, find_ghosts=find_ghosts).get_keys()
4008
if not revision_ids:
4010
2908
revision_ids = tsort.topo_sort(
4011
2909
self.source.get_graph().get_parent_map(revision_ids))
4012
if not revision_ids:
4014
# Walk though all revisions; get inventory deltas, copy referenced
4015
# texts that delta references, insert the delta, revision and
2910
def revisions_iterator():
2911
for current_revision_id in revision_ids:
2912
revision = self.source.get_revision(current_revision_id)
2913
tree = self.source.revision_tree(current_revision_id)
2915
signature = self.source.get_signature_text(
2916
current_revision_id)
2917
except errors.NoSuchRevision:
2919
yield revision, tree, signature
4018
2921
my_pb = ui.ui_factory.nested_progress_bar()
4021
symbol_versioning.warn(
4022
symbol_versioning.deprecated_in((1, 14, 0))
4023
% "pb parameter to fetch()")
4026
self._fetch_all_revisions(revision_ids, pb)
2926
install_revisions(self.target, revisions_iterator(),
2927
len(revision_ids), pb)
4028
2929
if my_pb is not None:
4029
2930
my_pb.finished()
4030
2931
return len(revision_ids), 0
4032
def _get_basis(self, first_revision_id):
4033
"""Get a revision and tree which exists in the target.
4035
This assumes that first_revision_id is selected for transmission
4036
because all other ancestors are already present. If we can't find an
4037
ancestor we fall back to NULL_REVISION since we know that is safe.
4039
:return: (basis_id, basis_tree)
4041
first_rev = self.source.get_revision(first_revision_id)
4043
basis_id = first_rev.parent_ids[0]
4044
# only valid as a basis if the target has it
4045
self.target.get_revision(basis_id)
4046
# Try to get a basis tree - if its a ghost it will hit the
4047
# NoSuchRevision case.
4048
basis_tree = self.source.revision_tree(basis_id)
4049
except (IndexError, errors.NoSuchRevision):
4050
basis_id = _mod_revision.NULL_REVISION
4051
basis_tree = self.source.revision_tree(basis_id)
4052
return basis_id, basis_tree
2934
class InterRemoteToOther(InterRepository):
2936
def __init__(self, source, target):
2937
InterRepository.__init__(self, source, target)
2938
self._real_inter = None
2941
def is_compatible(source, target):
2942
if not isinstance(source, remote.RemoteRepository):
2944
# Is source's model compatible with target's model?
2945
source._ensure_real()
2946
real_source = source._real_repository
2947
assert not isinstance(real_source, remote.RemoteRepository), (
2948
"We don't support remote repos backed by remote repos yet.")
2949
return InterRepository._same_model(real_source, target)
2952
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2953
"""See InterRepository.fetch()."""
2954
from bzrlib.fetch import RemoteToOtherFetcher
2955
mutter("Using fetch logic to copy between %s(remote) and %s(%s)",
2956
self.source, self.target, self.target._format)
2957
# TODO: jam 20070210 This should be an assert, not a translate
2958
revision_id = osutils.safe_revision_id(revision_id)
2959
f = RemoteToOtherFetcher(to_repository=self.target,
2960
from_repository=self.source,
2961
last_revision=revision_id,
2962
pb=pb, find_ghosts=find_ghosts)
2963
return f.count_copied, f.failed_revisions
2966
def _get_repo_format_to_test(self):
2970
class InterOtherToRemote(InterRepository):
2972
def __init__(self, source, target):
2973
InterRepository.__init__(self, source, target)
2974
self._real_inter = None
2977
def is_compatible(source, target):
2978
if isinstance(target, remote.RemoteRepository):
2982
def _ensure_real_inter(self):
2983
if self._real_inter is None:
2984
self.target._ensure_real()
2985
real_target = self.target._real_repository
2986
self._real_inter = InterRepository.get(self.source, real_target)
2988
def copy_content(self, revision_id=None):
2989
self._ensure_real_inter()
2990
self._real_inter.copy_content(revision_id=revision_id)
2992
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2993
self._ensure_real_inter()
2994
self._real_inter.fetch(revision_id=revision_id, pb=pb,
2995
find_ghosts=find_ghosts)
2998
def _get_repo_format_to_test(self):
4055
3002
InterRepository.register_optimiser(InterDifferingSerializer)
4056
3003
InterRepository.register_optimiser(InterSameDataRepository)
4057
3004
InterRepository.register_optimiser(InterWeaveRepo)
4058
3005
InterRepository.register_optimiser(InterKnitRepo)
3006
InterRepository.register_optimiser(InterModel1and2)
3007
InterRepository.register_optimiser(InterKnit1and2)
3008
InterRepository.register_optimiser(InterPackRepo)
3009
InterRepository.register_optimiser(InterRemoteToOther)
3010
InterRepository.register_optimiser(InterOtherToRemote)
4061
3013
class CopyConverter(object):
4062
3014
"""A repository conversion tool which just performs a copy of the content.
4064
3016
This is slow but quite reliable.
4217
3159
revision_graph[key] = tuple(parent for parent in parents if parent
4218
3160
in revision_graph)
4219
3161
return revision_graph
4222
class StreamSink(object):
4223
"""An object that can insert a stream into a repository.
4225
This interface handles the complexity of reserialising inventories and
4226
revisions from different formats, and allows unidirectional insertion into
4227
stacked repositories without looking for the missing basis parents
4231
def __init__(self, target_repo):
4232
self.target_repo = target_repo
4234
def insert_stream(self, stream, src_format, resume_tokens):
4235
"""Insert a stream's content into the target repository.
4237
:param src_format: a bzr repository format.
4239
:return: a list of resume tokens and an iterable of keys additional
4240
items required before the insertion can be completed.
4242
self.target_repo.lock_write()
4245
self.target_repo.resume_write_group(resume_tokens)
4248
self.target_repo.start_write_group()
4251
# locked_insert_stream performs a commit|suspend.
4252
return self._locked_insert_stream(stream, src_format, is_resume)
4254
self.target_repo.abort_write_group(suppress_errors=True)
4257
self.target_repo.unlock()
4259
def _locked_insert_stream(self, stream, src_format, is_resume):
4260
to_serializer = self.target_repo._format._serializer
4261
src_serializer = src_format._serializer
4263
if to_serializer == src_serializer:
4264
# If serializers match and the target is a pack repository, set the
4265
# write cache size on the new pack. This avoids poor performance
4266
# on transports where append is unbuffered (such as
4267
# RemoteTransport). This is safe to do because nothing should read
4268
# back from the target repository while a stream with matching
4269
# serialization is being inserted.
4270
# The exception is that a delta record from the source that should
4271
# be a fulltext may need to be expanded by the target (see
4272
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4273
# explicitly flush any buffered writes first in that rare case.
4275
new_pack = self.target_repo._pack_collection._new_pack
4276
except AttributeError:
4277
# Not a pack repository
4280
new_pack.set_write_cache_size(1024*1024)
4281
for substream_type, substream in stream:
4282
if 'stream' in debug.debug_flags:
4283
mutter('inserting substream: %s', substream_type)
4284
if substream_type == 'texts':
4285
self.target_repo.texts.insert_record_stream(substream)
4286
elif substream_type == 'inventories':
4287
if src_serializer == to_serializer:
4288
self.target_repo.inventories.insert_record_stream(
4291
self._extract_and_insert_inventories(
4292
substream, src_serializer)
4293
elif substream_type == 'inventory-deltas':
4294
self._extract_and_insert_inventory_deltas(
4295
substream, src_serializer)
4296
elif substream_type == 'chk_bytes':
4297
# XXX: This doesn't support conversions, as it assumes the
4298
# conversion was done in the fetch code.
4299
self.target_repo.chk_bytes.insert_record_stream(substream)
4300
elif substream_type == 'revisions':
4301
# This may fallback to extract-and-insert more often than
4302
# required if the serializers are different only in terms of
4304
if src_serializer == to_serializer:
4305
self.target_repo.revisions.insert_record_stream(
4308
self._extract_and_insert_revisions(substream,
4310
elif substream_type == 'signatures':
4311
self.target_repo.signatures.insert_record_stream(substream)
4313
raise AssertionError('kaboom! %s' % (substream_type,))
4314
# Done inserting data, and the missing_keys calculations will try to
4315
# read back from the inserted data, so flush the writes to the new pack
4316
# (if this is pack format).
4317
if new_pack is not None:
4318
new_pack._write_data('', flush=True)
4319
# Find all the new revisions (including ones from resume_tokens)
4320
missing_keys = self.target_repo.get_missing_parent_inventories(
4321
check_for_missing_texts=is_resume)
4323
for prefix, versioned_file in (
4324
('texts', self.target_repo.texts),
4325
('inventories', self.target_repo.inventories),
4326
('revisions', self.target_repo.revisions),
4327
('signatures', self.target_repo.signatures),
4328
('chk_bytes', self.target_repo.chk_bytes),
4330
if versioned_file is None:
4332
# TODO: key is often going to be a StaticTuple object
4333
# I don't believe we can define a method by which
4334
# (prefix,) + StaticTuple will work, though we could
4335
# define a StaticTuple.sq_concat that would allow you to
4336
# pass in either a tuple or a StaticTuple as the second
4337
# object, so instead we could have:
4338
# StaticTuple(prefix) + key here...
4339
missing_keys.update((prefix,) + key for key in
4340
versioned_file.get_missing_compression_parent_keys())
4341
except NotImplementedError:
4342
# cannot even attempt suspending, and missing would have failed
4343
# during stream insertion.
4344
missing_keys = set()
4347
# suspend the write group and tell the caller what we is
4348
# missing. We know we can suspend or else we would not have
4349
# entered this code path. (All repositories that can handle
4350
# missing keys can handle suspending a write group).
4351
write_group_tokens = self.target_repo.suspend_write_group()
4352
return write_group_tokens, missing_keys
4353
hint = self.target_repo.commit_write_group()
4354
if (to_serializer != src_serializer and
4355
self.target_repo._format.pack_compresses):
4356
self.target_repo.pack(hint=hint)
4359
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4360
target_rich_root = self.target_repo._format.rich_root_data
4361
target_tree_refs = self.target_repo._format.supports_tree_reference
4362
for record in substream:
4363
# Insert the delta directly
4364
inventory_delta_bytes = record.get_bytes_as('fulltext')
4365
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4367
parse_result = deserialiser.parse_text_bytes(
4368
inventory_delta_bytes)
4369
except inventory_delta.IncompatibleInventoryDelta, err:
4370
trace.mutter("Incompatible delta: %s", err.msg)
4371
raise errors.IncompatibleRevision(self.target_repo._format)
4372
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4373
revision_id = new_id
4374
parents = [key[0] for key in record.parents]
4375
self.target_repo.add_inventory_by_delta(
4376
basis_id, inv_delta, revision_id, parents)
4378
def _extract_and_insert_inventories(self, substream, serializer,
4380
"""Generate a new inventory versionedfile in target, converting data.
4382
The inventory is retrieved from the source, (deserializing it), and
4383
stored in the target (reserializing it in a different format).
4385
target_rich_root = self.target_repo._format.rich_root_data
4386
target_tree_refs = self.target_repo._format.supports_tree_reference
4387
for record in substream:
4388
# It's not a delta, so it must be a fulltext in the source
4389
# serializer's format.
4390
bytes = record.get_bytes_as('fulltext')
4391
revision_id = record.key[0]
4392
inv = serializer.read_inventory_from_string(bytes, revision_id)
4393
parents = [key[0] for key in record.parents]
4394
self.target_repo.add_inventory(revision_id, inv, parents)
4395
# No need to keep holding this full inv in memory when the rest of
4396
# the substream is likely to be all deltas.
4399
def _extract_and_insert_revisions(self, substream, serializer):
4400
for record in substream:
4401
bytes = record.get_bytes_as('fulltext')
4402
revision_id = record.key[0]
4403
rev = serializer.read_revision_from_string(bytes)
4404
if rev.revision_id != revision_id:
4405
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4406
self.target_repo.add_revision(revision_id, rev)
4409
if self.target_repo._format._fetch_reconcile:
4410
self.target_repo.reconcile()
4413
class StreamSource(object):
4414
"""A source of a stream for fetching between repositories."""
4416
def __init__(self, from_repository, to_format):
4417
"""Create a StreamSource streaming from from_repository."""
4418
self.from_repository = from_repository
4419
self.to_format = to_format
4421
def delta_on_metadata(self):
4422
"""Return True if delta's are permitted on metadata streams.
4424
That is on revisions and signatures.
4426
src_serializer = self.from_repository._format._serializer
4427
target_serializer = self.to_format._serializer
4428
return (self.to_format._fetch_uses_deltas and
4429
src_serializer == target_serializer)
4431
def _fetch_revision_texts(self, revs):
4432
# fetch signatures first and then the revision texts
4433
# may need to be a InterRevisionStore call here.
4434
from_sf = self.from_repository.signatures
4435
# A missing signature is just skipped.
4436
keys = [(rev_id,) for rev_id in revs]
4437
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4439
self.to_format._fetch_order,
4440
not self.to_format._fetch_uses_deltas))
4441
# If a revision has a delta, this is actually expanded inside the
4442
# insert_record_stream code now, which is an alternate fix for
4444
from_rf = self.from_repository.revisions
4445
revisions = from_rf.get_record_stream(
4447
self.to_format._fetch_order,
4448
not self.delta_on_metadata())
4449
return [('signatures', signatures), ('revisions', revisions)]
4451
def _generate_root_texts(self, revs):
4452
"""This will be called by get_stream between fetching weave texts and
4453
fetching the inventory weave.
4455
if self._rich_root_upgrade():
4456
return _mod_fetch.Inter1and2Helper(
4457
self.from_repository).generate_root_texts(revs)
4461
def get_stream(self, search):
4463
revs = search.get_keys()
4464
graph = self.from_repository.get_graph()
4465
revs = tsort.topo_sort(graph.get_parent_map(revs))
4466
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4468
for knit_kind, file_id, revisions in data_to_fetch:
4469
if knit_kind != phase:
4471
# Make a new progress bar for this phase
4472
if knit_kind == "file":
4473
# Accumulate file texts
4474
text_keys.extend([(file_id, revision) for revision in
4476
elif knit_kind == "inventory":
4477
# Now copy the file texts.
4478
from_texts = self.from_repository.texts
4479
yield ('texts', from_texts.get_record_stream(
4480
text_keys, self.to_format._fetch_order,
4481
not self.to_format._fetch_uses_deltas))
4482
# Cause an error if a text occurs after we have done the
4485
# Before we process the inventory we generate the root
4486
# texts (if necessary) so that the inventories references
4488
for _ in self._generate_root_texts(revs):
4490
# we fetch only the referenced inventories because we do not
4491
# know for unselected inventories whether all their required
4492
# texts are present in the other repository - it could be
4494
for info in self._get_inventory_stream(revs):
4496
elif knit_kind == "signatures":
4497
# Nothing to do here; this will be taken care of when
4498
# _fetch_revision_texts happens.
4500
elif knit_kind == "revisions":
4501
for record in self._fetch_revision_texts(revs):
4504
raise AssertionError("Unknown knit kind %r" % knit_kind)
4506
def get_stream_for_missing_keys(self, missing_keys):
4507
# missing keys can only occur when we are byte copying and not
4508
# translating (because translation means we don't send
4509
# unreconstructable deltas ever).
4511
keys['texts'] = set()
4512
keys['revisions'] = set()
4513
keys['inventories'] = set()
4514
keys['chk_bytes'] = set()
4515
keys['signatures'] = set()
4516
for key in missing_keys:
4517
keys[key[0]].add(key[1:])
4518
if len(keys['revisions']):
4519
# If we allowed copying revisions at this point, we could end up
4520
# copying a revision without copying its required texts: a
4521
# violation of the requirements for repository integrity.
4522
raise AssertionError(
4523
'cannot copy revisions to fill in missing deltas %s' % (
4524
keys['revisions'],))
4525
for substream_kind, keys in keys.iteritems():
4526
vf = getattr(self.from_repository, substream_kind)
4527
if vf is None and keys:
4528
raise AssertionError(
4529
"cannot fill in keys for a versioned file we don't"
4530
" have: %s needs %s" % (substream_kind, keys))
4532
# No need to stream something we don't have
4534
if substream_kind == 'inventories':
4535
# Some missing keys are genuinely ghosts, filter those out.
4536
present = self.from_repository.inventories.get_parent_map(keys)
4537
revs = [key[0] for key in present]
4538
# Get the inventory stream more-or-less as we do for the
4539
# original stream; there's no reason to assume that records
4540
# direct from the source will be suitable for the sink. (Think
4541
# e.g. 2a -> 1.9-rich-root).
4542
for info in self._get_inventory_stream(revs, missing=True):
4546
# Ask for full texts always so that we don't need more round trips
4547
# after this stream.
4548
# Some of the missing keys are genuinely ghosts, so filter absent
4549
# records. The Sink is responsible for doing another check to
4550
# ensure that ghosts don't introduce missing data for future
4552
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4553
self.to_format._fetch_order, True))
4554
yield substream_kind, stream
4556
def inventory_fetch_order(self):
4557
if self._rich_root_upgrade():
4558
return 'topological'
4560
return self.to_format._fetch_order
4562
def _rich_root_upgrade(self):
4563
return (not self.from_repository._format.rich_root_data and
4564
self.to_format.rich_root_data)
4566
def _get_inventory_stream(self, revision_ids, missing=False):
4567
from_format = self.from_repository._format
4568
if (from_format.supports_chks and self.to_format.supports_chks and
4569
from_format.network_name() == self.to_format.network_name()):
4570
raise AssertionError(
4571
"this case should be handled by GroupCHKStreamSource")
4572
elif 'forceinvdeltas' in debug.debug_flags:
4573
return self._get_convertable_inventory_stream(revision_ids,
4574
delta_versus_null=missing)
4575
elif from_format.network_name() == self.to_format.network_name():
4577
return self._get_simple_inventory_stream(revision_ids,
4579
elif (not from_format.supports_chks and not self.to_format.supports_chks
4580
and from_format._serializer == self.to_format._serializer):
4581
# Essentially the same format.
4582
return self._get_simple_inventory_stream(revision_ids,
4585
# Any time we switch serializations, we want to use an
4586
# inventory-delta based approach.
4587
return self._get_convertable_inventory_stream(revision_ids,
4588
delta_versus_null=missing)
4590
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4591
# NB: This currently reopens the inventory weave in source;
4592
# using a single stream interface instead would avoid this.
4593
from_weave = self.from_repository.inventories
4595
delta_closure = True
4597
delta_closure = not self.delta_on_metadata()
4598
yield ('inventories', from_weave.get_record_stream(
4599
[(rev_id,) for rev_id in revision_ids],
4600
self.inventory_fetch_order(), delta_closure))
4602
def _get_convertable_inventory_stream(self, revision_ids,
4603
delta_versus_null=False):
4604
# The two formats are sufficiently different that there is no fast
4605
# path, so we need to send just inventorydeltas, which any
4606
# sufficiently modern client can insert into any repository.
4607
# The StreamSink code expects to be able to
4608
# convert on the target, so we need to put bytes-on-the-wire that can
4609
# be converted. That means inventory deltas (if the remote is <1.19,
4610
# RemoteStreamSink will fallback to VFS to insert the deltas).
4611
yield ('inventory-deltas',
4612
self._stream_invs_as_deltas(revision_ids,
4613
delta_versus_null=delta_versus_null))
4615
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4616
"""Return a stream of inventory-deltas for the given rev ids.
4618
:param revision_ids: The list of inventories to transmit
4619
:param delta_versus_null: Don't try to find a minimal delta for this
4620
entry, instead compute the delta versus the NULL_REVISION. This
4621
effectively streams a complete inventory. Used for stuff like
4622
filling in missing parents, etc.
4624
from_repo = self.from_repository
4625
revision_keys = [(rev_id,) for rev_id in revision_ids]
4626
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4627
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4629
inventories = self.from_repository.iter_inventories(
4630
revision_ids, 'topological')
4631
format = from_repo._format
4632
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4633
inventory_cache = lru_cache.LRUCache(50)
4634
null_inventory = from_repo.revision_tree(
4635
_mod_revision.NULL_REVISION).inventory
4636
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4637
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4638
# repo back into a non-rich-root repo ought to be allowed)
4639
serializer = inventory_delta.InventoryDeltaSerializer(
4640
versioned_root=format.rich_root_data,
4641
tree_references=format.supports_tree_reference)
4642
for inv in inventories:
4643
key = (inv.revision_id,)
4644
parent_keys = parent_map.get(key, ())
4646
if not delta_versus_null and parent_keys:
4647
# The caller did not ask for complete inventories and we have
4648
# some parents that we can delta against. Make a delta against
4649
# each parent so that we can find the smallest.
4650
parent_ids = [parent_key[0] for parent_key in parent_keys]
4651
for parent_id in parent_ids:
4652
if parent_id not in invs_sent_so_far:
4653
# We don't know that the remote side has this basis, so
4656
if parent_id == _mod_revision.NULL_REVISION:
4657
parent_inv = null_inventory
4659
parent_inv = inventory_cache.get(parent_id, None)
4660
if parent_inv is None:
4661
parent_inv = from_repo.get_inventory(parent_id)
4662
candidate_delta = inv._make_delta(parent_inv)
4663
if (delta is None or
4664
len(delta) > len(candidate_delta)):
4665
delta = candidate_delta
4666
basis_id = parent_id
4668
# Either none of the parents ended up being suitable, or we
4669
# were asked to delta against NULL
4670
basis_id = _mod_revision.NULL_REVISION
4671
delta = inv._make_delta(null_inventory)
4672
invs_sent_so_far.add(inv.revision_id)
4673
inventory_cache[inv.revision_id] = inv
4674
delta_serialized = ''.join(
4675
serializer.delta_to_lines(basis_id, key[-1], delta))
4676
yield versionedfile.FulltextContentFactory(
4677
key, parent_keys, None, delta_serialized)
4680
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4681
stop_revision=None):
4682
"""Extend the partial history to include a given index
4684
If a stop_index is supplied, stop when that index has been reached.
4685
If a stop_revision is supplied, stop when that revision is
4686
encountered. Otherwise, stop when the beginning of history is
4689
:param stop_index: The index which should be present. When it is
4690
present, history extension will stop.
4691
:param stop_revision: The revision id which should be present. When
4692
it is encountered, history extension will stop.
4694
start_revision = partial_history_cache[-1]
4695
iterator = repo.iter_reverse_revision_history(start_revision)
4697
#skip the last revision in the list
4700
if (stop_index is not None and
4701
len(partial_history_cache) > stop_index):
4703
if partial_history_cache[-1] == stop_revision:
4705
revision_id = iterator.next()
4706
partial_history_cache.append(revision_id)
4707
except StopIteration:
added
removed
bzrlib/repository.py
