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
991
def add_fallback_repository(self, repository):
992
"""Add a repository to use for looking up data not held locally.
994
:param repository: A repository.
996
if not self._format.supports_external_lookups:
997
raise errors.UnstackableRepositoryFormat(self._format, self.base)
999
# This repository will call fallback.unlock() when we transition to
1000
# the unlocked state, so we make sure to increment the lock count
1001
repository.lock_read()
1002
self._check_fallback_repository(repository)
1003
self._fallback_repositories.append(repository)
1004
self.texts.add_fallback_versioned_files(repository.texts)
1005
self.inventories.add_fallback_versioned_files(repository.inventories)
1006
self.revisions.add_fallback_versioned_files(repository.revisions)
1007
self.signatures.add_fallback_versioned_files(repository.signatures)
1008
if self.chk_bytes is not None:
1009
self.chk_bytes.add_fallback_versioned_files(repository.chk_bytes)
1011
def _check_fallback_repository(self, repository):
1012
"""Check that this repository can fallback to repository safely.
1014
Raise an error if not.
1016
:param repository: A repository to fallback to.
1018
return InterRepository._assert_same_model(self, repository)
1020
499
def add_inventory(self, revision_id, inv, parents):
1021
500
"""Add the inventory inv to the repository as revision_id.
1023
502
:param parents: The revision ids of the parents that revision_id
1024
503
is known to have and are in the repository already.
1026
:returns: The validator(which is a sha1 digest, though what is sha'd is
1027
repository format specific) of the serialized inventory.
505
returns the sha1 of the serialized inventory.
1029
if not self.is_in_write_group():
1030
raise AssertionError("%r not in write group" % (self,))
507
assert self.is_in_write_group()
1031
508
_mod_revision.check_not_reserved_id(revision_id)
1032
if not (inv.revision_id is None or inv.revision_id == revision_id):
1033
raise AssertionError(
1034
"Mismatch between inventory revision"
1035
" id and insertion revid (%r, %r)"
1036
% (inv.revision_id, revision_id))
1037
if inv.root is None:
1038
raise AssertionError()
1039
return self._add_inventory_checked(revision_id, inv, parents)
1041
def _add_inventory_checked(self, revision_id, inv, parents):
1042
"""Add inv to the repository after checking the inputs.
1044
This function can be overridden to allow different inventory styles.
1046
:seealso: add_inventory, for the contract.
1048
inv_lines = self._serializer.write_inventory_to_lines(inv)
1049
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,
1050
516
inv_lines, check_content=False)
1052
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1053
parents, basis_inv=None, propagate_caches=False):
1054
"""Add a new inventory expressed as a delta against another revision.
1056
See the inventory developers documentation for the theory behind
1059
:param basis_revision_id: The inventory id the delta was created
1060
against. (This does not have to be a direct parent.)
1061
:param delta: The inventory delta (see Inventory.apply_delta for
1063
:param new_revision_id: The revision id that the inventory is being
1065
:param parents: The revision ids of the parents that revision_id is
1066
known to have and are in the repository already. These are supplied
1067
for repositories that depend on the inventory graph for revision
1068
graph access, as well as for those that pun ancestry with delta
1070
:param basis_inv: The basis inventory if it is already known,
1072
:param propagate_caches: If True, the caches for this inventory are
1073
copied to and updated for the result if possible.
1075
:returns: (validator, new_inv)
1076
The validator(which is a sha1 digest, though what is sha'd is
1077
repository format specific) of the serialized inventory, and the
1078
resulting inventory.
1080
if not self.is_in_write_group():
1081
raise AssertionError("%r not in write group" % (self,))
1082
_mod_revision.check_not_reserved_id(new_revision_id)
1083
basis_tree = self.revision_tree(basis_revision_id)
1084
basis_tree.lock_read()
1086
# Note that this mutates the inventory of basis_tree, which not all
1087
# inventory implementations may support: A better idiom would be to
1088
# return a new inventory, but as there is no revision tree cache in
1089
# repository this is safe for now - RBC 20081013
1090
if basis_inv is None:
1091
basis_inv = basis_tree.inventory
1092
basis_inv.apply_delta(delta)
1093
basis_inv.revision_id = new_revision_id
1094
return (self.add_inventory(new_revision_id, basis_inv, parents),
1099
def _inventory_add_lines(self, revision_id, parents, lines,
518
def _inventory_add_lines(self, inv_vf, revision_id, parents, lines,
1100
519
check_content=True):
1101
520
"""Store lines in inv_vf and return the sha1 of the inventory."""
1102
parents = [(parent,) for parent in parents]
1103
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,
1104
526
check_content=check_content)[0]
1105
self.inventories._access.flush()
1108
529
def add_revision(self, revision_id, rev, inv=None, config=None):
1109
530
"""Add rev to the revision store as revision_id.
1180
595
Returns a set of the present revisions.
1183
graph = self.get_graph()
1184
parent_map = graph.get_parent_map(revision_ids)
1185
# The old API returned a list, should this actually be a set?
1186
return parent_map.keys()
1188
def _check_inventories(self, checker):
1189
"""Check the inventories found from the revision scan.
1191
This is responsible for verifying the sha1 of inventories and
1192
creating a pending_keys set that covers data referenced by inventories.
1194
bar = ui.ui_factory.nested_progress_bar()
1196
self._do_check_inventories(checker, bar)
1200
def _do_check_inventories(self, checker, bar):
1201
"""Helper for _check_inventories."""
1203
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1204
kinds = ['chk_bytes', 'texts']
1205
count = len(checker.pending_keys)
1206
bar.update("inventories", 0, 2)
1207
current_keys = checker.pending_keys
1208
checker.pending_keys = {}
1209
# Accumulate current checks.
1210
for key in current_keys:
1211
if key[0] != 'inventories' and key[0] not in kinds:
1212
checker._report_items.append('unknown key type %r' % (key,))
1213
keys[key[0]].add(key[1:])
1214
if keys['inventories']:
1215
# NB: output order *should* be roughly sorted - topo or
1216
# inverse topo depending on repository - either way decent
1217
# to just delta against. However, pre-CHK formats didn't
1218
# try to optimise inventory layout on disk. As such the
1219
# pre-CHK code path does not use inventory deltas.
1221
for record in self.inventories.check(keys=keys['inventories']):
1222
if record.storage_kind == 'absent':
1223
checker._report_items.append(
1224
'Missing inventory {%s}' % (record.key,))
1226
last_object = self._check_record('inventories', record,
1227
checker, last_object,
1228
current_keys[('inventories',) + record.key])
1229
del keys['inventories']
1232
bar.update("texts", 1)
1233
while (checker.pending_keys or keys['chk_bytes']
1235
# Something to check.
1236
current_keys = checker.pending_keys
1237
checker.pending_keys = {}
1238
# Accumulate current checks.
1239
for key in current_keys:
1240
if key[0] not in kinds:
1241
checker._report_items.append('unknown key type %r' % (key,))
1242
keys[key[0]].add(key[1:])
1243
# Check the outermost kind only - inventories || chk_bytes || texts
1247
for record in getattr(self, kind).check(keys=keys[kind]):
1248
if record.storage_kind == 'absent':
1249
checker._report_items.append(
1250
'Missing %s {%s}' % (kind, record.key,))
1252
last_object = self._check_record(kind, record,
1253
checker, last_object, current_keys[(kind,) + record.key])
1257
def _check_record(self, kind, record, checker, last_object, item_data):
1258
"""Check a single text from this repository."""
1259
if kind == 'inventories':
1260
rev_id = record.key[0]
1261
inv = self._deserialise_inventory(rev_id,
1262
record.get_bytes_as('fulltext'))
1263
if last_object is not None:
1264
delta = inv._make_delta(last_object)
1265
for old_path, path, file_id, ie in delta:
1268
ie.check(checker, rev_id, inv)
1270
for path, ie in inv.iter_entries():
1271
ie.check(checker, rev_id, inv)
1272
if self._format.fast_deltas:
1274
elif kind == 'chk_bytes':
1275
# No code written to check chk_bytes for this repo format.
1276
checker._report_items.append(
1277
'unsupported key type chk_bytes for %s' % (record.key,))
1278
elif kind == 'texts':
1279
self._check_text(record, checker, item_data)
1281
checker._report_items.append(
1282
'unknown key type %s for %s' % (kind, record.key))
1284
def _check_text(self, record, checker, item_data):
1285
"""Check a single text."""
1286
# Check it is extractable.
1287
# TODO: check length.
1288
if record.storage_kind == 'chunked':
1289
chunks = record.get_bytes_as(record.storage_kind)
1290
sha1 = osutils.sha_strings(chunks)
1291
length = sum(map(len, chunks))
1293
content = record.get_bytes_as('fulltext')
1294
sha1 = osutils.sha_string(content)
1295
length = len(content)
1296
if item_data and sha1 != item_data[1]:
1297
checker._report_items.append(
1298
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1299
(record.key, sha1, item_data[1], item_data[2]))
598
for id in revision_ids:
599
if self.has_revision(id):
1302
604
def create(a_bzrdir):
1303
605
"""Construct the current default format repository in a_bzrdir."""
1304
606
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
1306
def __init__(self, _format, a_bzrdir, control_files):
608
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1307
609
"""instantiate a Repository.
1309
611
:param _format: The format of the repository on disk.
1310
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.
1312
# In the future we will have a single api for all stores for
1313
# getting file texts, inventories and revisions, then
1314
# this construct will accept instances of those things.
1315
618
super(Repository, self).__init__()
1316
619
self._format = _format
1317
620
# the following are part of the public API for Repository:
1318
621
self.bzrdir = a_bzrdir
1319
622
self.control_files = control_files
1320
self._transport = control_files._transport
1321
self.base = self._transport.base
623
self._revision_store = _revision_store
624
# backwards compatibility
625
self.weave_store = text_store
1323
627
self._reconcile_does_inventory_gc = True
1324
628
self._reconcile_fixes_text_parents = False
1325
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()
1326
637
self._write_group = None
1327
# Additional places to query for data.
1328
self._fallback_repositories = []
1329
# An InventoryEntry cache, used during deserialization
1330
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1331
# Is it safe to return inventory entries directly from the entry cache,
1332
# rather copying them?
1333
self._safe_to_return_from_cache = False
1336
def user_transport(self):
1337
return self.bzrdir.user_transport
1340
def control_transport(self):
1341
return self._transport
638
self.base = control_files._transport.base
1343
640
def __repr__(self):
1344
if self._fallback_repositories:
1345
return '%s(%r, fallback_repositories=%r)' % (
1346
self.__class__.__name__,
1348
self._fallback_repositories)
1350
return '%s(%r)' % (self.__class__.__name__,
1353
def _has_same_fallbacks(self, other_repo):
1354
"""Returns true if the repositories have the same fallbacks."""
1355
my_fb = self._fallback_repositories
1356
other_fb = other_repo._fallback_repositories
1357
if len(my_fb) != len(other_fb):
1359
for f, g in zip(my_fb, other_fb):
1360
if not f.has_same_location(g):
641
return '%s(%r)' % (self.__class__.__name__,
1364
644
def has_same_location(self, other):
1365
645
"""Returns a boolean indicating if this repository is at the same
1578
834
"""Commit the contents accrued within the current write group.
1580
836
:seealso: start_write_group.
1582
:return: it may return an opaque hint that can be passed to 'pack'.
1584
838
if self._write_group is not self.get_transaction():
1585
839
# has an unlock or relock occured ?
1586
840
raise errors.BzrError('mismatched lock context %r and '
1587
841
'write group %r.' %
1588
842
(self.get_transaction(), self._write_group))
1589
result = self._commit_write_group()
843
self._commit_write_group()
1590
844
self._write_group = None
1593
846
def _commit_write_group(self):
1594
847
"""Template method for per-repository write group cleanup.
1596
This is called before the write group is considered to be
849
This is called before the write group is considered to be
1597
850
finished and should ensure that all data handed to the repository
1598
for writing during the write group is safely committed (to the
851
for writing during the write group is safely committed (to the
1599
852
extent possible considering file system caching etc).
1602
def suspend_write_group(self):
1603
raise errors.UnsuspendableWriteGroup(self)
1605
def get_missing_parent_inventories(self, check_for_missing_texts=True):
1606
"""Return the keys of missing inventory parents for revisions added in
1609
A revision is not complete if the inventory delta for that revision
1610
cannot be calculated. Therefore if the parent inventories of a
1611
revision are not present, the revision is incomplete, and e.g. cannot
1612
be streamed by a smart server. This method finds missing inventory
1613
parents for revisions added in this write group.
1615
if not self._format.supports_external_lookups:
1616
# This is only an issue for stacked repositories
1618
if not self.is_in_write_group():
1619
raise AssertionError('not in a write group')
1621
# XXX: We assume that every added revision already has its
1622
# corresponding inventory, so we only check for parent inventories that
1623
# might be missing, rather than all inventories.
1624
parents = set(self.revisions._index.get_missing_parents())
1625
parents.discard(_mod_revision.NULL_REVISION)
1626
unstacked_inventories = self.inventories._index
1627
present_inventories = unstacked_inventories.get_parent_map(
1628
key[-1:] for key in parents)
1629
parents.difference_update(present_inventories)
1630
if len(parents) == 0:
1631
# No missing parent inventories.
1633
if not check_for_missing_texts:
1634
return set(('inventories', rev_id) for (rev_id,) in parents)
1635
# Ok, now we have a list of missing inventories. But these only matter
1636
# if the inventories that reference them are missing some texts they
1637
# appear to introduce.
1638
# XXX: Texts referenced by all added inventories need to be present,
1639
# but at the moment we're only checking for texts referenced by
1640
# inventories at the graph's edge.
1641
key_deps = self.revisions._index._key_dependencies
1642
key_deps.satisfy_refs_for_keys(present_inventories)
1643
referrers = frozenset(r[0] for r in key_deps.get_referrers())
1644
file_ids = self.fileids_altered_by_revision_ids(referrers)
1645
missing_texts = set()
1646
for file_id, version_ids in file_ids.iteritems():
1647
missing_texts.update(
1648
(file_id, version_id) for version_id in version_ids)
1649
present_texts = self.texts.get_parent_map(missing_texts)
1650
missing_texts.difference_update(present_texts)
1651
if not missing_texts:
1652
# No texts are missing, so all revisions and their deltas are
1655
# Alternatively the text versions could be returned as the missing
1656
# keys, but this is likely to be less data.
1657
missing_keys = set(('inventories', rev_id) for (rev_id,) in parents)
1660
def refresh_data(self):
1661
"""Re-read any data needed to to synchronise with disk.
1663
This method is intended to be called after another repository instance
1664
(such as one used by a smart server) has inserted data into the
1665
repository. It may not be called during a write group, but may be
1666
called at any other time.
1668
if self.is_in_write_group():
1669
raise errors.InternalBzrError(
1670
"May not refresh_data while in a write group.")
1671
self._refresh_data()
1673
def resume_write_group(self, tokens):
1674
if not self.is_write_locked():
1675
raise errors.NotWriteLocked(self)
1676
if self._write_group:
1677
raise errors.BzrError('already in a write group')
1678
self._resume_write_group(tokens)
1679
# so we can detect unlock/relock - the write group is now entered.
1680
self._write_group = self.get_transaction()
1682
def _resume_write_group(self, tokens):
1683
raise errors.UnsuspendableWriteGroup(self)
1685
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False,
855
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False):
1687
856
"""Fetch the content required to construct revision_id from source.
1689
If revision_id is None and fetch_spec is None, then all content is
1692
fetch() may not be used when the repository is in a write group -
1693
either finish the current write group before using fetch, or use
1694
fetch before starting the write group.
858
If revision_id is None all content is copied.
1696
859
:param find_ghosts: Find and copy revisions in the source that are
1697
860
ghosts in the target (and not reachable directly by walking out to
1698
861
the first-present revision in target from revision_id).
1699
:param revision_id: If specified, all the content needed for this
1700
revision ID will be copied to the target. Fetch will determine for
1701
itself which content needs to be copied.
1702
:param fetch_spec: If specified, a SearchResult or
1703
PendingAncestryResult that describes which revisions to copy. This
1704
allows copying multiple heads at once. Mutually exclusive with
1707
if fetch_spec is not None and revision_id is not None:
1708
raise AssertionError(
1709
"fetch_spec and revision_id are mutually exclusive.")
1710
if self.is_in_write_group():
1711
raise errors.InternalBzrError(
1712
"May not fetch while in a write group.")
1713
863
# fast path same-url fetch operations
1714
# TODO: lift out to somewhere common with RemoteRepository
1715
# <https://bugs.edge.launchpad.net/bzr/+bug/401646>
1716
if (self.has_same_location(source)
1717
and fetch_spec is None
1718
and self._has_same_fallbacks(source)):
864
if self.has_same_location(source):
1719
865
# check that last_revision is in 'from' and then return a
1721
867
if (revision_id is not None and
1722
868
not _mod_revision.is_null(revision_id)):
1723
869
self.get_revision(revision_id)
1725
# if there is no specific appropriate InterRepository, this will get
1726
# the InterRepository base class, which raises an
1727
# IncompatibleRepositories when asked to fetch.
1728
871
inter = InterRepository.get(source, self)
1729
return inter.fetch(revision_id=revision_id, pb=pb,
1730
find_ghosts=find_ghosts, fetch_spec=fetch_spec)
873
return inter.fetch(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts)
874
except NotImplementedError:
875
raise errors.IncompatibleRepositories(source, self)
1732
877
def create_bundle(self, target, base, fileobj, format=None):
1733
878
return serializer.write_bundle(self, target, base, fileobj, format)
1884
1000
@needs_read_lock
1885
1001
def get_revisions(self, revision_ids):
1886
"""Get many revisions at once.
1888
Repositories that need to check data on every revision read should
1889
subclass this method.
1002
"""Get many revisions at once."""
1891
1003
return self._get_revisions(revision_ids)
1893
1005
@needs_read_lock
1894
1006
def _get_revisions(self, revision_ids):
1895
1007
"""Core work logic to get many revisions without sanity checks."""
1897
for revid, rev in self._iter_revisions(revision_ids):
1899
raise errors.NoSuchRevision(self, revid)
1901
return [revs[revid] for revid in revision_ids]
1903
def _iter_revisions(self, revision_ids):
1904
"""Iterate over revision objects.
1906
:param revision_ids: An iterable of revisions to examine. None may be
1907
passed to request all revisions known to the repository. Note that
1908
not all repositories can find unreferenced revisions; for those
1909
repositories only referenced ones will be returned.
1910
:return: An iterator of (revid, revision) tuples. Absent revisions (
1911
those asked for but not available) are returned as (revid, None).
1913
if revision_ids is None:
1914
revision_ids = self.all_revision_ids()
1916
for rev_id in revision_ids:
1917
if not rev_id or not isinstance(rev_id, basestring):
1918
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1919
keys = [(key,) for key in revision_ids]
1920
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1921
for record in stream:
1922
revid = record.key[0]
1923
if record.storage_kind == 'absent':
1926
text = record.get_bytes_as('fulltext')
1927
rev = self._serializer.read_revision_from_string(text)
1930
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1008
for rev_id in revision_ids:
1009
if not rev_id or not isinstance(rev_id, basestring):
1010
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1011
revs = self._revision_store.get_revisions(revision_ids,
1012
self.get_transaction())
1014
assert not isinstance(rev.revision_id, unicode)
1015
for parent_id in rev.parent_ids:
1016
assert not isinstance(parent_id, unicode)
1020
def get_revision_xml(self, revision_id):
1021
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1022
# would have already do it.
1023
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1024
rev = self.get_revision(revision_id)
1025
rev_tmp = StringIO()
1026
# the current serializer..
1027
self._revision_store._serializer.write_revision(rev, rev_tmp)
1029
return rev_tmp.getvalue()
1032
def get_deltas_for_revisions(self, revisions):
1931
1033
"""Produce a generator of revision deltas.
1933
1035
Note that the input is a sequence of REVISIONS, not revision_ids.
1934
1036
Trees will be held in memory until the generator exits.
1935
1037
Each delta is relative to the revision's lefthand predecessor.
1937
:param specific_fileids: if not None, the result is filtered
1938
so that only those file-ids, their parents and their
1939
children are included.
1941
# Get the revision-ids of interest
1942
1039
required_trees = set()
1943
1040
for revision in revisions:
1944
1041
required_trees.add(revision.revision_id)
1945
1042
required_trees.update(revision.parent_ids[:1])
1947
# Get the matching filtered trees. Note that it's more
1948
# efficient to pass filtered trees to changes_from() rather
1949
# than doing the filtering afterwards. changes_from() could
1950
# arguably do the filtering itself but it's path-based, not
1951
# file-id based, so filtering before or afterwards is
1953
if specific_fileids is None:
1954
trees = dict((t.get_revision_id(), t) for
1955
t in self.revision_trees(required_trees))
1957
trees = dict((t.get_revision_id(), t) for
1958
t in self._filtered_revision_trees(required_trees,
1961
# Calculate the deltas
1043
trees = dict((t.get_revision_id(), t) for
1044
t in self.revision_trees(required_trees))
1962
1045
for revision in revisions:
1963
1046
if not revision.parent_ids:
1964
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1047
old_tree = self.revision_tree(None)
1966
1049
old_tree = trees[revision.parent_ids[0]]
1967
1050
yield trees[revision.revision_id].changes_from(old_tree)
1969
1052
@needs_read_lock
1970
def get_revision_delta(self, revision_id, specific_fileids=None):
1053
def get_revision_delta(self, revision_id):
1971
1054
"""Return the delta for one revision.
1973
1056
The delta is relative to the left-hand predecessor of the
1976
:param specific_fileids: if not None, the result is filtered
1977
so that only those file-ids, their parents and their
1978
children are included.
1980
1059
r = self.get_revision(revision_id)
1981
return list(self.get_deltas_for_revisions([r],
1982
specific_fileids=specific_fileids))[0]
1060
return list(self.get_deltas_for_revisions([r]))[0]
1984
1062
@needs_write_lock
1985
1063
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
2085
1167
key = (file_id, revision_id)
2086
1168
setdefault(key, False)
2087
if revision_id == line_key[-1]:
1169
if revision_id == version_id:
2088
1170
result[key] = True
2091
def _inventory_xml_lines_for_keys(self, keys):
2092
"""Get a line iterator of the sort needed for findind references.
2094
Not relevant for non-xml inventory repositories.
2096
Ghosts in revision_keys are ignored.
2098
:param revision_keys: The revision keys for the inventories to inspect.
2099
:return: An iterator over (inventory line, revid) for the fulltexts of
2100
all of the xml inventories specified by revision_keys.
2102
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2103
for record in stream:
2104
if record.storage_kind != 'absent':
2105
chunks = record.get_bytes_as('chunked')
2106
revid = record.key[-1]
2107
lines = osutils.chunks_to_lines(chunks)
2111
1173
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
2113
1175
"""Helper routine for fileids_altered_by_revision_ids.
2115
1177
This performs the translation of xml lines to revision ids.
2117
1179
:param line_iterator: An iterator of lines, origin_version_id
2118
:param revision_keys: The revision ids to filter for. This should be a
1180
:param revision_ids: The revision ids to filter for. This should be a
2119
1181
set or other type which supports efficient __contains__ lookups, as
2120
the revision key from each parsed line will be looked up in the
2121
revision_keys filter.
1182
the revision id from each parsed line will be looked up in the
1183
revision_ids filter.
2122
1184
:return: a dictionary mapping altered file-ids to an iterable of
2123
1185
revision_ids. Each altered file-ids has the exact revision_ids that
2124
1186
altered it listed explicitly.
2126
seen = set(self._find_text_key_references_from_xml_inventory_lines(
2127
line_iterator).iterkeys())
2128
parent_keys = self._find_parent_keys_of_revisions(revision_keys)
2129
parent_seen = set(self._find_text_key_references_from_xml_inventory_lines(
2130
self._inventory_xml_lines_for_keys(parent_keys)))
2131
new_keys = seen - parent_seen
2133
1189
setdefault = result.setdefault
2134
for key in new_keys:
2135
setdefault(key[0], set()).add(key[-1])
1190
for file_id, revision_id in \
1191
self._find_text_key_references_from_xml_inventory_lines(
1192
line_iterator).iterkeys():
1193
# once data is all ensured-consistent; then this is
1194
# if revision_id == version_id
1195
if revision_id in revision_ids:
1196
setdefault(file_id, set()).add(revision_id)
2138
def _find_parent_ids_of_revisions(self, revision_ids):
2139
"""Find all parent ids that are mentioned in the revision graph.
2141
:return: set of revisions that are parents of revision_ids which are
2142
not part of revision_ids themselves
2144
parent_map = self.get_parent_map(revision_ids)
2146
map(parent_ids.update, parent_map.itervalues())
2147
parent_ids.difference_update(revision_ids)
2148
parent_ids.discard(_mod_revision.NULL_REVISION)
2151
def _find_parent_keys_of_revisions(self, revision_keys):
2152
"""Similar to _find_parent_ids_of_revisions, but used with keys.
2154
:param revision_keys: An iterable of revision_keys.
2155
:return: The parents of all revision_keys that are not already in
2158
parent_map = self.revisions.get_parent_map(revision_keys)
2160
map(parent_keys.update, parent_map.itervalues())
2161
parent_keys.difference_update(revision_keys)
2162
parent_keys.discard(_mod_revision.NULL_REVISION)
2165
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
1199
def fileids_altered_by_revision_ids(self, revision_ids):
2166
1200
"""Find the file ids and versions affected by revisions.
2168
1202
:param revisions: an iterable containing revision ids.
2169
:param _inv_weave: The inventory weave from this repository or None.
2170
If None, the inventory weave will be opened automatically.
2171
1203
:return: a dictionary mapping altered file-ids to an iterable of
2172
1204
revision_ids. Each altered file-ids has the exact revision_ids that
2173
1205
altered it listed explicitly.
2175
selected_keys = set((revid,) for revid in revision_ids)
2176
w = _inv_weave or self.inventories
2177
return self._find_file_ids_from_xml_inventory_lines(
2178
w.iter_lines_added_or_present_in_keys(
2179
selected_keys, pb=None),
1207
selected_revision_ids = set(revision_ids)
1208
w = self.get_inventory_weave()
1209
pb = ui.ui_factory.nested_progress_bar()
1211
return self._find_file_ids_from_xml_inventory_lines(
1212
w.iter_lines_added_or_present_in_versions(
1213
selected_revision_ids, pb=pb),
1214
selected_revision_ids)
2182
1218
def iter_files_bytes(self, desired_files):
2183
1219
"""Iterate through file versions.
2324
1355
versions). knit-kind is one of 'file', 'inventory', 'signatures',
2325
1356
'revisions'. file-id is None unless knit-kind is 'file'.
2327
for result in self._find_file_keys_to_fetch(revision_ids, _files_pb):
2330
for result in self._find_non_file_keys_to_fetch(revision_ids):
2333
def _find_file_keys_to_fetch(self, revision_ids, pb):
2334
1358
# XXX: it's a bit weird to control the inventory weave caching in this
2335
1359
# generator. Ideally the caching would be done in fetch.py I think. Or
2336
1360
# maybe this generator should explicitly have the contract that it
2337
1361
# should not be iterated until the previously yielded item has been
2339
inv_w = self.inventories
1364
inv_w = self.get_inventory_weave()
1365
inv_w.enable_cache()
2341
1367
# file ids that changed
2342
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
1368
file_ids = self.fileids_altered_by_revision_ids(revision_ids)
2344
1370
num_file_ids = len(file_ids)
2345
1371
for file_id, altered_versions in file_ids.iteritems():
2347
pb.update("Fetch texts", count, num_file_ids)
1372
if _files_pb is not None:
1373
_files_pb.update("fetch texts", count, num_file_ids)
2349
1375
yield ("file", file_id, altered_versions)
1376
# We're done with the files_pb. Note that it finished by the caller,
1377
# just as it was created by the caller.
2351
def _find_non_file_keys_to_fetch(self, revision_ids):
2353
1381
yield ("inventory", None, revision_ids)
2356
# XXX: Note ATM no callers actually pay attention to this return
2357
# instead they just use the list of revision ids and ignore
2358
# missing sigs. Consider removing this work entirely
2359
revisions_with_signatures = set(self.signatures.get_parent_map(
2360
[(r,) for r in revision_ids]))
2361
revisions_with_signatures = set(
2362
[r for (r,) in revisions_with_signatures])
2363
revisions_with_signatures.intersection_update(revision_ids)
1385
revisions_with_signatures = set()
1386
for rev_id in revision_ids:
1388
self.get_signature_text(rev_id)
1389
except errors.NoSuchRevision:
1393
revisions_with_signatures.add(rev_id)
2364
1395
yield ("signatures", None, revisions_with_signatures)
2367
1398
yield ("revisions", None, revision_ids)
2369
1400
@needs_read_lock
1401
def get_inventory_weave(self):
1402
return self.control_weaves.get_weave('inventory',
1403
self.get_transaction())
2370
1406
def get_inventory(self, revision_id):
2371
"""Get Inventory object by revision id."""
2372
return self.iter_inventories([revision_id]).next()
2374
def iter_inventories(self, revision_ids, ordering=None):
2375
"""Get many inventories by revision_ids.
2377
This will buffer some or all of the texts used in constructing the
2378
inventories in memory, but will only parse a single inventory at a
2381
:param revision_ids: The expected revision ids of the inventories.
2382
:param ordering: optional ordering, e.g. 'topological'. If not
2383
specified, the order of revision_ids will be preserved (by
2384
buffering if necessary).
2385
:return: An iterator of inventories.
2387
if ((None in revision_ids)
2388
or (_mod_revision.NULL_REVISION in revision_ids)):
2389
raise ValueError('cannot get null revision inventory')
2390
return self._iter_inventories(revision_ids, ordering)
2392
def _iter_inventories(self, revision_ids, ordering):
2393
"""single-document based inventory iteration."""
2394
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2395
for text, revision_id in inv_xmls:
2396
yield self._deserialise_inventory(revision_id, text)
2398
def _iter_inventory_xmls(self, revision_ids, ordering):
2399
if ordering is None:
2400
order_as_requested = True
2401
ordering = 'unordered'
2403
order_as_requested = False
2404
keys = [(revision_id,) for revision_id in revision_ids]
2407
if order_as_requested:
2408
key_iter = iter(keys)
2409
next_key = key_iter.next()
2410
stream = self.inventories.get_record_stream(keys, ordering, True)
2412
for record in stream:
2413
if record.storage_kind != 'absent':
2414
chunks = record.get_bytes_as('chunked')
2415
if order_as_requested:
2416
text_chunks[record.key] = chunks
2418
yield ''.join(chunks), record.key[-1]
2420
raise errors.NoSuchRevision(self, record.key)
2421
if order_as_requested:
2422
# Yield as many results as we can while preserving order.
2423
while next_key in text_chunks:
2424
chunks = text_chunks.pop(next_key)
2425
yield ''.join(chunks), next_key[-1]
2427
next_key = key_iter.next()
2428
except StopIteration:
2429
# We still want to fully consume the get_record_stream,
2430
# just in case it is not actually finished at this point
2434
def _deserialise_inventory(self, revision_id, xml):
2435
"""Transform the xml into an inventory object.
1407
"""Get Inventory object by hash."""
1408
return self.deserialise_inventory(
1409
revision_id, self.get_inventory_xml(revision_id))
1411
def deserialise_inventory(self, revision_id, xml):
1412
"""Transform the xml into an inventory object.
2437
1414
:param revision_id: The expected revision id of the inventory.
2438
1415
:param xml: A serialised inventory.
2440
result = self._serializer.read_inventory_from_string(xml, revision_id,
2441
entry_cache=self._inventory_entry_cache,
2442
return_from_cache=self._safe_to_return_from_cache)
2443
if result.revision_id != revision_id:
2444
raise AssertionError('revision id mismatch %s != %s' % (
2445
result.revision_id, revision_id))
1417
return self._serializer.read_inventory_from_string(xml, revision_id)
1419
def serialise_inventory(self, inv):
1420
return self._serializer.write_inventory_to_string(inv)
1422
def _serialise_inventory_to_lines(self, inv):
1423
return self._serializer.write_inventory_to_lines(inv)
2448
1425
def get_serializer_format(self):
2449
1426
return self._serializer.format_num
2451
1428
@needs_read_lock
2452
def _get_inventory_xml(self, revision_id):
2453
"""Get serialized inventory as a string."""
2454
texts = self._iter_inventory_xmls([revision_id], 'unordered')
1429
def get_inventory_xml(self, revision_id):
1430
"""Get inventory XML as a file object."""
2456
text, revision_id = texts.next()
2457
except StopIteration:
1432
assert isinstance(revision_id, str), type(revision_id)
1433
iw = self.get_inventory_weave()
1434
return iw.get_text(revision_id)
2458
1436
raise errors.HistoryMissing(self, 'inventory', revision_id)
2461
def get_rev_id_for_revno(self, revno, known_pair):
2462
"""Return the revision id of a revno, given a later (revno, revid)
2463
pair in the same history.
2465
:return: if found (True, revid). If the available history ran out
2466
before reaching the revno, then this returns
2467
(False, (closest_revno, closest_revid)).
2469
known_revno, known_revid = known_pair
2470
partial_history = [known_revid]
2471
distance_from_known = known_revno - revno
2472
if distance_from_known < 0:
2474
'requested revno (%d) is later than given known revno (%d)'
2475
% (revno, known_revno))
2478
self, partial_history, stop_index=distance_from_known)
2479
except errors.RevisionNotPresent, err:
2480
if err.revision_id == known_revid:
2481
# The start revision (known_revid) wasn't found.
2483
# This is a stacked repository with no fallbacks, or a there's a
2484
# left-hand ghost. Either way, even though the revision named in
2485
# the error isn't in this repo, we know it's the next step in this
2486
# left-hand history.
2487
partial_history.append(err.revision_id)
2488
if len(partial_history) <= distance_from_known:
2489
# Didn't find enough history to get a revid for the revno.
2490
earliest_revno = known_revno - len(partial_history) + 1
2491
return (False, (earliest_revno, partial_history[-1]))
2492
if len(partial_history) - 1 > distance_from_known:
2493
raise AssertionError('_iter_for_revno returned too much history')
2494
return (True, partial_history[-1])
1439
def get_inventory_sha1(self, revision_id):
1440
"""Return the sha1 hash of the inventory entry
1442
return self.get_revision(revision_id).inventory_sha1
1445
def get_revision_graph(self, revision_id=None):
1446
"""Return a dictionary containing the revision graph.
1448
NB: This method should not be used as it accesses the entire graph all
1449
at once, which is much more data than most operations should require.
1451
:param revision_id: The revision_id to get a graph from. If None, then
1452
the entire revision graph is returned. This is a deprecated mode of
1453
operation and will be removed in the future.
1454
:return: a dictionary of revision_id->revision_parents_list.
1456
raise NotImplementedError(self.get_revision_graph)
1459
def get_revision_graph_with_ghosts(self, revision_ids=None):
1460
"""Return a graph of the revisions with ghosts marked as applicable.
1462
:param revision_ids: an iterable of revisions to graph or None for all.
1463
:return: a Graph object with the graph reachable from revision_ids.
1465
if 'evil' in debug.debug_flags:
1467
"get_revision_graph_with_ghosts scales with size of history.")
1468
result = deprecated_graph.Graph()
1469
if not revision_ids:
1470
pending = set(self.all_revision_ids())
1473
pending = set(revision_ids)
1474
# special case NULL_REVISION
1475
if _mod_revision.NULL_REVISION in pending:
1476
pending.remove(_mod_revision.NULL_REVISION)
1477
required = set(pending)
1480
revision_id = pending.pop()
1482
rev = self.get_revision(revision_id)
1483
except errors.NoSuchRevision:
1484
if revision_id in required:
1487
result.add_ghost(revision_id)
1489
for parent_id in rev.parent_ids:
1490
# is this queued or done ?
1491
if (parent_id not in pending and
1492
parent_id not in done):
1494
pending.add(parent_id)
1495
result.add_node(revision_id, rev.parent_ids)
1496
done.add(revision_id)
1499
def _get_history_vf(self):
1500
"""Get a versionedfile whose history graph reflects all revisions.
1502
For weave repositories, this is the inventory weave.
1504
return self.get_inventory_weave()
2496
1506
def iter_reverse_revision_history(self, revision_id):
2497
1507
"""Iterate backwards through revision ids in the lefthand history
2533
1557
for repositories to maintain loaded indices across multiple locks
2534
1558
by checking inside their implementation of this method to see
2535
1559
whether their indices are still valid. This depends of course on
2536
the disk format being validatable in this manner. This method is
2537
also called by the refresh_data() public interface to cause a refresh
2538
to occur while in a write lock so that data inserted by a smart server
2539
push operation is visible on the client's instance of the physical
1560
the disk format being validatable in this manner.
2543
1563
@needs_read_lock
2544
1564
def revision_tree(self, revision_id):
2545
1565
"""Return Tree for a revision on this branch.
2547
`revision_id` may be NULL_REVISION for the empty tree revision.
1567
`revision_id` may be None for the empty tree revision.
2549
revision_id = _mod_revision.ensure_null(revision_id)
2550
1569
# TODO: refactor this to use an existing revision object
2551
1570
# so we don't need to read it in twice.
2552
if revision_id == _mod_revision.NULL_REVISION:
2553
return RevisionTree(self, Inventory(root_id=None),
1571
if revision_id is None or revision_id == _mod_revision.NULL_REVISION:
1572
return RevisionTree(self, Inventory(root_id=None),
2554
1573
_mod_revision.NULL_REVISION)
2556
inv = self.get_inventory(revision_id)
1575
inv = self.get_revision_inventory(revision_id)
2557
1576
return RevisionTree(self, inv, revision_id)
2559
1579
def revision_trees(self, revision_ids):
2560
"""Return Trees for revisions in this repository.
2562
:param revision_ids: a sequence of revision-ids;
2563
a revision-id may not be None or 'null:'
2565
inventories = self.iter_inventories(revision_ids)
2566
for inv in inventories:
2567
yield RevisionTree(self, inv, inv.revision_id)
2569
def _filtered_revision_trees(self, revision_ids, file_ids):
2570
"""Return Tree for a revision on this branch with only some files.
2572
:param revision_ids: a sequence of revision-ids;
2573
a revision-id may not be None or 'null:'
2574
:param file_ids: if not None, the result is filtered
2575
so that only those file-ids, their parents and their
2576
children are included.
2578
inventories = self.iter_inventories(revision_ids)
2579
for inv in inventories:
2580
# Should we introduce a FilteredRevisionTree class rather
2581
# than pre-filter the inventory here?
2582
filtered_inv = inv.filter(file_ids)
2583
yield RevisionTree(self, filtered_inv, filtered_inv.revision_id)
1580
"""Return Tree for a revision on this branch.
1582
`revision_id` may not be None or 'null:'"""
1583
assert None not in revision_ids
1584
assert _mod_revision.NULL_REVISION not in revision_ids
1585
texts = self.get_inventory_weave().get_texts(revision_ids)
1586
for text, revision_id in zip(texts, revision_ids):
1587
inv = self.deserialise_inventory(revision_id, text)
1588
yield RevisionTree(self, inv, revision_id)
2585
1590
@needs_read_lock
2586
1591
def get_ancestry(self, revision_id, topo_sorted=True):
2587
1592
"""Return a list of revision-ids integrated by a revision.
2589
The first element of the list is always None, indicating the origin
2590
revision. This might change when we have history horizons, or
1594
The first element of the list is always None, indicating the origin
1595
revision. This might change when we have history horizons, or
2591
1596
perhaps we should have a new API.
2593
1598
This is topologically sorted.
2595
1600
if _mod_revision.is_null(revision_id):
2597
1602
if not self.has_revision(revision_id):
2598
1603
raise errors.NoSuchRevision(self, revision_id)
2599
graph = self.get_graph()
2601
search = graph._make_breadth_first_searcher([revision_id])
2604
found, ghosts = search.next_with_ghosts()
2605
except StopIteration:
2608
if _mod_revision.NULL_REVISION in keys:
2609
keys.remove(_mod_revision.NULL_REVISION)
2611
parent_map = graph.get_parent_map(keys)
2612
keys = tsort.topo_sort(parent_map)
2613
return [None] + list(keys)
1604
w = self.get_inventory_weave()
1605
candidates = w.get_ancestry(revision_id, topo_sorted)
1606
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
2615
def pack(self, hint=None, clean_obsolete_packs=False):
2616
1609
"""Compress the data within the repository.
2618
1611
This operation only makes sense for some repository types. For other
2619
1612
types it should be a no-op that just returns.
2621
1614
This stub method does not require a lock, but subclasses should use
2622
@needs_write_lock as this is a long running call its reasonable to
1615
@needs_write_lock as this is a long running call its reasonable to
2623
1616
implicitly lock for the user.
2625
:param hint: If not supplied, the whole repository is packed.
2626
If supplied, the repository may use the hint parameter as a
2627
hint for the parts of the repository to pack. A hint can be
2628
obtained from the result of commit_write_group(). Out of
2629
date hints are simply ignored, because concurrent operations
2630
can obsolete them rapidly.
2632
:param clean_obsolete_packs: Clean obsolete packs immediately after
1620
def print_file(self, file, revision_id):
1621
"""Print `file` to stdout.
1623
FIXME RBC 20060125 as John Meinel points out this is a bad api
1624
- it writes to stdout, it assumes that that is valid etc. Fix
1625
by creating a new more flexible convenience function.
1627
tree = self.revision_tree(revision_id)
1628
# use inventory as it was in that revision
1629
file_id = tree.inventory.path2id(file)
1631
# TODO: jam 20060427 Write a test for this code path
1632
# it had a bug in it, and was raising the wrong
1634
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1635
tree.print_file(file_id)
2636
1637
def get_transaction(self):
2637
1638
return self.control_files.get_transaction()
2639
def get_parent_map(self, revision_ids):
2640
"""See graph.StackedParentsProvider.get_parent_map"""
2641
# revisions index works in keys; this just works in revisions
2642
# therefore wrap and unwrap
1640
def revision_parents(self, revision_id):
1641
return self.get_inventory_weave().parent_names(revision_id)
1643
def get_parents(self, revision_ids):
1644
"""See StackedParentsProvider.get_parents"""
2645
1646
for revision_id in revision_ids:
2646
1647
if revision_id == _mod_revision.NULL_REVISION:
2647
result[revision_id] = ()
2648
elif revision_id is None:
2649
raise ValueError('get_parent_map(None) is not valid')
2651
query_keys.append((revision_id ,))
2652
for ((revision_id,), parent_keys) in \
2653
self.revisions.get_parent_map(query_keys).iteritems():
2655
result[revision_id] = tuple([parent_revid
2656
for (parent_revid,) in parent_keys])
2658
result[revision_id] = (_mod_revision.NULL_REVISION,)
1651
parents = self.get_revision(revision_id).parent_ids
1652
except errors.NoSuchRevision:
1655
if len(parents) == 0:
1656
parents = [_mod_revision.NULL_REVISION]
1657
parents_list.append(parents)
2661
1660
def _make_parents_provider(self):
2665
def get_known_graph_ancestry(self, revision_ids):
2666
"""Return the known graph for a set of revision ids and their ancestors.
2668
st = static_tuple.StaticTuple
2669
revision_keys = [st(r_id).intern() for r_id in revision_ids]
2670
known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
2671
return graph.GraphThunkIdsToKeys(known_graph)
2673
1663
def get_graph(self, other_repository=None):
2674
1664
"""Return the graph walker for this repository format"""
2675
1665
parents_provider = self._make_parents_provider()
2676
1666
if (other_repository is not None and
2677
not self.has_same_location(other_repository)):
2678
parents_provider = graph.StackedParentsProvider(
1667
other_repository.bzrdir.transport.base !=
1668
self.bzrdir.transport.base):
1669
parents_provider = graph._StackedParentsProvider(
2679
1670
[parents_provider, other_repository._make_parents_provider()])
2680
1671
return graph.Graph(parents_provider)
2682
def _get_versioned_file_checker(self, text_key_references=None,
2684
"""Return an object suitable for checking versioned files.
2686
:param text_key_references: if non-None, an already built
2687
dictionary mapping text keys ((fileid, revision_id) tuples)
2688
to whether they were referred to by the inventory of the
2689
revision_id that they contain. If None, this will be
2691
:param ancestors: Optional result from
2692
self.get_graph().get_parent_map(self.all_revision_ids()) if already
2695
return _VersionedFileChecker(self,
2696
text_key_references=text_key_references, ancestors=ancestors)
2698
def revision_ids_to_search_result(self, result_set):
2699
"""Convert a set of revision ids to a graph SearchResult."""
2700
result_parents = set()
2701
for parents in self.get_graph().get_parent_map(
2702
result_set).itervalues():
2703
result_parents.update(parents)
2704
included_keys = result_set.intersection(result_parents)
2705
start_keys = result_set.difference(included_keys)
2706
exclude_keys = result_parents.difference(result_set)
2707
result = graph.SearchResult(start_keys, exclude_keys,
2708
len(result_set), result_set)
1673
def _get_versioned_file_checker(self):
1674
"""Return an object suitable for checking versioned files."""
1675
return _VersionedFileChecker(self)
2711
1677
@needs_write_lock
2712
1678
def set_make_working_trees(self, new_value):
3392
2202
InterRepository.get(other).method_name(parameters).
3395
_walk_to_common_revisions_batch_size = 50
3396
2205
_optimisers = []
3397
2206
"""The available optimised InterRepository types."""
3400
2208
def copy_content(self, revision_id=None):
3401
"""Make a complete copy of the content in self into destination.
3403
This is a destructive operation! Do not use it on existing
3406
:param revision_id: Only copy the content needed to construct
3407
revision_id and its parents.
3410
self.target.set_make_working_trees(self.source.make_working_trees())
3411
except NotImplementedError:
3413
self.target.fetch(self.source, revision_id=revision_id)
3416
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
2209
raise NotImplementedError(self.copy_content)
2211
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
3418
2212
"""Fetch the content required to construct revision_id.
3420
2214
The content is copied from self.source to self.target.
3422
2216
:param revision_id: if None all content is copied, if NULL_REVISION no
3423
2217
content is copied.
3427
ui.ui_factory.warn_experimental_format_fetch(self)
3428
from bzrlib.fetch import RepoFetcher
3429
# See <https://launchpad.net/bugs/456077> asking for a warning here
3430
if self.source._format.network_name() != self.target._format.network_name():
3431
ui.ui_factory.show_user_warning('cross_format_fetch',
3432
from_format=self.source._format,
3433
to_format=self.target._format)
3434
f = RepoFetcher(to_repository=self.target,
3435
from_repository=self.source,
3436
last_revision=revision_id,
3437
fetch_spec=fetch_spec,
3438
find_ghosts=find_ghosts)
3440
def _walk_to_common_revisions(self, revision_ids):
3441
"""Walk out from revision_ids in source to revisions target has.
3443
:param revision_ids: The start point for the search.
3444
:return: A set of revision ids.
3446
target_graph = self.target.get_graph()
3447
revision_ids = frozenset(revision_ids)
3448
missing_revs = set()
3449
source_graph = self.source.get_graph()
3450
# ensure we don't pay silly lookup costs.
3451
searcher = source_graph._make_breadth_first_searcher(revision_ids)
3452
null_set = frozenset([_mod_revision.NULL_REVISION])
3453
searcher_exhausted = False
3457
# Iterate the searcher until we have enough next_revs
3458
while len(next_revs) < self._walk_to_common_revisions_batch_size:
3460
next_revs_part, ghosts_part = searcher.next_with_ghosts()
3461
next_revs.update(next_revs_part)
3462
ghosts.update(ghosts_part)
3463
except StopIteration:
3464
searcher_exhausted = True
3466
# If there are ghosts in the source graph, and the caller asked for
3467
# them, make sure that they are present in the target.
3468
# We don't care about other ghosts as we can't fetch them and
3469
# haven't been asked to.
3470
ghosts_to_check = set(revision_ids.intersection(ghosts))
3471
revs_to_get = set(next_revs).union(ghosts_to_check)
3473
have_revs = set(target_graph.get_parent_map(revs_to_get))
3474
# we always have NULL_REVISION present.
3475
have_revs = have_revs.union(null_set)
3476
# Check if the target is missing any ghosts we need.
3477
ghosts_to_check.difference_update(have_revs)
3479
# One of the caller's revision_ids is a ghost in both the
3480
# source and the target.
3481
raise errors.NoSuchRevision(
3482
self.source, ghosts_to_check.pop())
3483
missing_revs.update(next_revs - have_revs)
3484
# Because we may have walked past the original stop point, make
3485
# sure everything is stopped
3486
stop_revs = searcher.find_seen_ancestors(have_revs)
3487
searcher.stop_searching_any(stop_revs)
3488
if searcher_exhausted:
3490
return searcher.get_result()
2218
:param pb: optional progress bar to use for progress reports. If not
2219
provided a default one will be created.
2221
Returns the copied revision count and the failed revisions in a tuple:
2224
raise NotImplementedError(self.fetch)
3492
2226
@needs_read_lock
3493
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2227
def missing_revision_ids(self, revision_id=None, find_ghosts=True):
3494
2228
"""Return the revision ids that source has that target does not.
2230
These are returned in topological order.
3496
2232
:param revision_id: only return revision ids included by this
3498
:param find_ghosts: If True find missing revisions in deep history
3499
rather than just finding the surface difference.
3500
:return: A bzrlib.graph.SearchResult.
3502
# stop searching at found target revisions.
3503
if not find_ghosts and revision_id is not None:
3504
return self._walk_to_common_revisions([revision_id])
3505
2235
# generic, possibly worst case, slow code path.
3506
2236
target_ids = set(self.target.all_revision_ids())
3507
2237
if revision_id is not None:
3508
2238
source_ids = self.source.get_ancestry(revision_id)
3509
if source_ids[0] is not None:
3510
raise AssertionError()
2239
assert source_ids[0] is None
3511
2240
source_ids.pop(0)
3513
2242
source_ids = self.source.all_revision_ids()
3514
2243
result_set = set(source_ids).difference(target_ids)
3515
return self.source.revision_ids_to_search_result(result_set)
2244
# this may look like a no-op: its not. It preserves the ordering
2245
# other_ids had while only returning the members from other_ids
2246
# that we've decided we need.
2247
return [rev_id for rev_id in source_ids if rev_id in result_set]
3518
2250
def _same_model(source, target):
3519
"""True if source and target have the same data representation.
3521
Note: this is always called on the base class; overriding it in a
3522
subclass will have no effect.
3525
InterRepository._assert_same_model(source, target)
3527
except errors.IncompatibleRepositories, e:
2251
"""True if source and target have the same data representation."""
2252
if source.supports_rich_root() != target.supports_rich_root():
3531
def _assert_same_model(source, target):
3532
"""Raise an exception if two repositories do not use the same model.
3534
if source.supports_rich_root() != target.supports_rich_root():
3535
raise errors.IncompatibleRepositories(source, target,
3536
"different rich-root support")
3537
2254
if source._serializer != target._serializer:
3538
raise errors.IncompatibleRepositories(source, target,
3539
"different serializers")
3542
2259
class InterSameDataRepository(InterRepository):
3543
2260
"""Code for converting between repositories that represent the same data.
3545
2262
Data format and model must match for this to work.
3549
2266
def _get_repo_format_to_test(self):
3550
2267
"""Repository format for testing with.
3552
2269
InterSameData can pull from subtree to subtree and from non-subtree to
3553
2270
non-subtree, so we test this with the richest repository format.
3713
2484
# we do not have a revision as that would be pointless.
3714
2485
target_ids = set(self.target.all_revision_ids())
3715
2486
possibly_present_revisions = target_ids.intersection(source_ids_set)
3716
actually_present_revisions = set(
3717
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2487
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3718
2488
required_revisions = source_ids_set.difference(actually_present_revisions)
2489
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3719
2490
if revision_id is not None:
3720
2491
# we used get_ancestry to determine source_ids then we are assured all
3721
2492
# revisions referenced are present as they are installed in topological order.
3722
2493
# and the tip revision was validated by get_ancestry.
3723
result_set = required_revisions
2494
return required_topo_revisions
3725
# if we just grabbed the possibly available ids, then
2496
# if we just grabbed the possibly available ids, then
3726
2497
# we only have an estimate of whats available and need to validate
3727
2498
# that against the revision records.
3729
self.source._eliminate_revisions_not_present(required_revisions))
3730
return self.source.revision_ids_to_search_result(result_set)
3733
class InterDifferingSerializer(InterRepository):
2499
return self.source._eliminate_revisions_not_present(required_topo_revisions)
2502
class InterPackRepo(InterSameDataRepository):
2503
"""Optimised code paths between Pack based repositories."""
2506
def _get_repo_format_to_test(self):
2507
from bzrlib.repofmt import pack_repo
2508
return pack_repo.RepositoryFormatKnitPack1()
2511
def is_compatible(source, target):
2512
"""Be compatible with known Pack formats.
2514
We don't test for the stores being of specific types because that
2515
could lead to confusing results, and there is no need to be
2518
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2520
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2521
isinstance(target._format, RepositoryFormatPack))
2522
except AttributeError:
2524
return are_packs and InterRepository._same_model(source, target)
2527
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2528
"""See InterRepository.fetch()."""
2529
from bzrlib.repofmt.pack_repo import Packer
2530
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2531
self.source, self.source._format, self.target, self.target._format)
2532
self.count_copied = 0
2533
if revision_id is None:
2535
# everything to do - use pack logic
2536
# to fetch from all packs to one without
2537
# inventory parsing etc, IFF nothing to be copied is in the target.
2539
revision_ids = self.source.all_revision_ids()
2540
# implementing the TODO will involve:
2541
# - detecting when all of a pack is selected
2542
# - avoiding as much as possible pre-selection, so the
2543
# more-core routines such as create_pack_from_packs can filter in
2544
# a just-in-time fashion. (though having a HEADS list on a
2545
# repository might make this a lot easier, because we could
2546
# sensibly detect 'new revisions' without doing a full index scan.
2547
elif _mod_revision.is_null(revision_id):
2552
revision_ids = self.missing_revision_ids(revision_id,
2553
find_ghosts=find_ghosts)
2554
except errors.NoSuchRevision:
2555
raise errors.InstallFailed([revision_id])
2556
packs = self.source._pack_collection.all_packs()
2557
pack = Packer(self.target._pack_collection, packs, '.fetch',
2558
revision_ids).pack()
2559
if pack is not None:
2560
self.target._pack_collection._save_pack_names()
2561
# Trigger an autopack. This may duplicate effort as we've just done
2562
# a pack creation, but for now it is simpler to think about as
2563
# 'upload data, then repack if needed'.
2564
self.target._pack_collection.autopack()
2565
return (pack.get_revision_count(), [])
2570
def missing_revision_ids(self, revision_id=None, find_ghosts=True):
2571
"""See InterRepository.missing_revision_ids().
2573
:param find_ghosts: Find ghosts throughough the ancestry of
2576
if not find_ghosts and revision_id is not None:
2577
graph = self.source.get_graph()
2578
missing_revs = set()
2579
searcher = graph._make_breadth_first_searcher([revision_id])
2581
self.target._pack_collection.revision_index.combined_index
2582
null_set = frozenset([_mod_revision.NULL_REVISION])
2585
next_revs = set(searcher.next())
2586
except StopIteration:
2588
next_revs.difference_update(null_set)
2589
target_keys = [(key,) for key in next_revs]
2590
have_revs = frozenset(node[1][0] for node in
2591
target_index.iter_entries(target_keys))
2592
missing_revs.update(next_revs - have_revs)
2593
searcher.stop_searching_any(have_revs)
2594
if next_revs - have_revs == set([revision_id]):
2595
# we saw the start rev itself, but no parents from it (or
2596
# next_revs would have been updated to e.g. set(). We remove
2597
# have_revs because if we found revision_id locally we
2598
# stop_searching at the first time around.
2599
raise errors.NoSuchRevision(self.source, revision_id)
2601
elif revision_id is not None:
2602
source_ids = self.source.get_ancestry(revision_id)
2603
assert source_ids[0] is None
2606
source_ids = self.source.all_revision_ids()
2607
# source_ids is the worst possible case we may need to pull.
2608
# now we want to filter source_ids against what we actually
2609
# have in target, but don't try to check for existence where we know
2610
# we do not have a revision as that would be pointless.
2611
target_ids = set(self.target.all_revision_ids())
2612
return [r for r in source_ids if (r not in target_ids)]
2615
class InterModel1and2(InterRepository):
2618
def _get_repo_format_to_test(self):
2622
def is_compatible(source, target):
2623
if not source.supports_rich_root() and target.supports_rich_root():
2629
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2630
"""See InterRepository.fetch()."""
2631
from bzrlib.fetch import Model1toKnit2Fetcher
2632
f = Model1toKnit2Fetcher(to_repository=self.target,
2633
from_repository=self.source,
2634
last_revision=revision_id,
2636
return f.count_copied, f.failed_revisions
2639
def copy_content(self, revision_id=None):
2640
"""Make a complete copy of the content in self into destination.
2642
This is a destructive operation! Do not use it on existing
2645
:param revision_id: Only copy the content needed to construct
2646
revision_id and its parents.
2649
self.target.set_make_working_trees(self.source.make_working_trees())
2650
except NotImplementedError:
2652
# but don't bother fetching if we have the needed data now.
2653
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2654
self.target.has_revision(revision_id)):
2656
self.target.fetch(self.source, revision_id=revision_id)
2659
class InterKnit1and2(InterKnitRepo):
2662
def _get_repo_format_to_test(self):
2666
def is_compatible(source, target):
2667
"""Be compatible with Knit1 source and Knit3 target"""
2668
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit3
2670
from bzrlib.repofmt.knitrepo import (RepositoryFormatKnit1,
2671
RepositoryFormatKnit3)
2672
from bzrlib.repofmt.pack_repo import (RepositoryFormatKnitPack1,
2673
RepositoryFormatKnitPack3)
2674
return (isinstance(source._format,
2675
(RepositoryFormatKnit1, RepositoryFormatKnitPack1)) and
2676
isinstance(target._format,
2677
(RepositoryFormatKnit3, RepositoryFormatKnitPack3))
2679
except AttributeError:
2683
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2684
"""See InterRepository.fetch()."""
2685
from bzrlib.fetch import Knit1to2Fetcher
2686
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2687
self.source, self.source._format, self.target,
2688
self.target._format)
2689
f = Knit1to2Fetcher(to_repository=self.target,
2690
from_repository=self.source,
2691
last_revision=revision_id,
2693
return f.count_copied, f.failed_revisions
2696
class InterDifferingSerializer(InterKnitRepo):
3736
2699
def _get_repo_format_to_test(self):
3740
2703
def is_compatible(source, target):
3741
2704
"""Be compatible with Knit2 source and Knit3 target"""
3742
# This is redundant with format.check_conversion_target(), however that
3743
# raises an exception, and we just want to say "False" as in we won't
3744
# support converting between these formats.
3745
if 'IDS_never' in debug.debug_flags:
3747
if source.supports_rich_root() and not target.supports_rich_root():
3749
if (source._format.supports_tree_reference
3750
and not target._format.supports_tree_reference):
3752
if target._fallback_repositories and target._format.supports_chks:
3753
# IDS doesn't know how to copy CHKs for the parent inventories it
3754
# adds to stacked repos.
3756
if 'IDS_always' in debug.debug_flags:
3758
# Only use this code path for local source and target. IDS does far
3759
# too much IO (both bandwidth and roundtrips) over a network.
3760
if not source.bzrdir.transport.base.startswith('file:///'):
3762
if not target.bzrdir.transport.base.startswith('file:///'):
2705
if source.supports_rich_root() != target.supports_rich_root():
2707
# Ideally, we'd support fetching if the source had no tree references
2708
# even if it supported them...
2709
if (getattr(source, '_format.supports_tree_reference', False) and
2710
not getattr(target, '_format.supports_tree_reference', False)):
3766
def _get_trees(self, revision_ids, cache):
3768
for rev_id in revision_ids:
3770
possible_trees.append((rev_id, cache[rev_id]))
3772
# Not cached, but inventory might be present anyway.
2715
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2716
"""See InterRepository.fetch()."""
2717
revision_ids = self.target.missing_revision_ids(self.source,
2719
def revisions_iterator():
2720
for current_revision_id in revision_ids:
2721
revision = self.source.get_revision(current_revision_id)
2722
tree = self.source.revision_tree(current_revision_id)
3774
tree = self.source.revision_tree(rev_id)
2724
signature = self.source.get_signature_text(
2725
current_revision_id)
3775
2726
except errors.NoSuchRevision:
3776
# Nope, parent is ghost.
3779
cache[rev_id] = tree
3780
possible_trees.append((rev_id, tree))
3781
return possible_trees
3783
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3784
"""Get the best delta and base for this revision.
3786
:return: (basis_id, delta)
3789
# Generate deltas against each tree, to find the shortest.
3790
texts_possibly_new_in_tree = set()
3791
for basis_id, basis_tree in possible_trees:
3792
delta = tree.inventory._make_delta(basis_tree.inventory)
3793
for old_path, new_path, file_id, new_entry in delta:
3794
if new_path is None:
3795
# This file_id isn't present in the new rev, so we don't
3799
# Rich roots are handled elsewhere...
3801
kind = new_entry.kind
3802
if kind != 'directory' and kind != 'file':
3803
# No text record associated with this inventory entry.
3805
# This is a directory or file that has changed somehow.
3806
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3807
deltas.append((len(delta), basis_id, delta))
3809
return deltas[0][1:]
3811
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3812
"""Find all parent revisions that are absent, but for which the
3813
inventory is present, and copy those inventories.
3815
This is necessary to preserve correctness when the source is stacked
3816
without fallbacks configured. (Note that in cases like upgrade the
3817
source may be not have _fallback_repositories even though it is
3821
for parents in parent_map.values():
3822
parent_revs.update(parents)
3823
present_parents = self.source.get_parent_map(parent_revs)
3824
absent_parents = set(parent_revs).difference(present_parents)
3825
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3826
(rev_id,) for rev_id in absent_parents)
3827
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3828
for parent_tree in self.source.revision_trees(parent_inv_ids):
3829
current_revision_id = parent_tree.get_revision_id()
3830
parents_parents_keys = parent_invs_keys_for_stacking[
3831
(current_revision_id,)]
3832
parents_parents = [key[-1] for key in parents_parents_keys]
3833
basis_id = _mod_revision.NULL_REVISION
3834
basis_tree = self.source.revision_tree(basis_id)
3835
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3836
self.target.add_inventory_by_delta(
3837
basis_id, delta, current_revision_id, parents_parents)
3838
cache[current_revision_id] = parent_tree
3840
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3841
"""Fetch across a few revisions.
3843
:param revision_ids: The revisions to copy
3844
:param basis_id: The revision_id of a tree that must be in cache, used
3845
as a basis for delta when no other base is available
3846
:param cache: A cache of RevisionTrees that we can use.
3847
:param a_graph: A Graph object to determine the heads() of the
3848
rich-root data stream.
3849
:return: The revision_id of the last converted tree. The RevisionTree
3850
for it will be in cache
3852
# Walk though all revisions; get inventory deltas, copy referenced
3853
# texts that delta references, insert the delta, revision and
3855
root_keys_to_create = set()
3858
pending_revisions = []
3859
parent_map = self.source.get_parent_map(revision_ids)
3860
self._fetch_parent_invs_for_stacking(parent_map, cache)
3861
self.source._safe_to_return_from_cache = True
3862
for tree in self.source.revision_trees(revision_ids):
3863
# Find a inventory delta for this revision.
3864
# Find text entries that need to be copied, too.
3865
current_revision_id = tree.get_revision_id()
3866
parent_ids = parent_map.get(current_revision_id, ())
3867
parent_trees = self._get_trees(parent_ids, cache)
3868
possible_trees = list(parent_trees)
3869
if len(possible_trees) == 0:
3870
# There either aren't any parents, or the parents are ghosts,
3871
# so just use the last converted tree.
3872
possible_trees.append((basis_id, cache[basis_id]))
3873
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3875
revision = self.source.get_revision(current_revision_id)
3876
pending_deltas.append((basis_id, delta,
3877
current_revision_id, revision.parent_ids))
3878
if self._converting_to_rich_root:
3879
self._revision_id_to_root_id[current_revision_id] = \
3881
# Determine which texts are in present in this revision but not in
3882
# any of the available parents.
3883
texts_possibly_new_in_tree = set()
3884
for old_path, new_path, file_id, entry in delta:
3885
if new_path is None:
3886
# This file_id isn't present in the new rev
3890
if not self.target.supports_rich_root():
3891
# The target doesn't support rich root, so we don't
3894
if self._converting_to_rich_root:
3895
# This can't be copied normally, we have to insert
3897
root_keys_to_create.add((file_id, entry.revision))
3900
texts_possibly_new_in_tree.add((file_id, entry.revision))
3901
for basis_id, basis_tree in possible_trees:
3902
basis_inv = basis_tree.inventory
3903
for file_key in list(texts_possibly_new_in_tree):
3904
file_id, file_revision = file_key
3906
entry = basis_inv[file_id]
3907
except errors.NoSuchId:
3909
if entry.revision == file_revision:
3910
texts_possibly_new_in_tree.remove(file_key)
3911
text_keys.update(texts_possibly_new_in_tree)
3912
pending_revisions.append(revision)
3913
cache[current_revision_id] = tree
3914
basis_id = current_revision_id
3915
self.source._safe_to_return_from_cache = False
3917
from_texts = self.source.texts
3918
to_texts = self.target.texts
3919
if root_keys_to_create:
3920
root_stream = _mod_fetch._new_root_data_stream(
3921
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3922
self.source, graph=a_graph)
3923
to_texts.insert_record_stream(root_stream)
3924
to_texts.insert_record_stream(from_texts.get_record_stream(
3925
text_keys, self.target._format._fetch_order,
3926
not self.target._format._fetch_uses_deltas))
3927
# insert inventory deltas
3928
for delta in pending_deltas:
3929
self.target.add_inventory_by_delta(*delta)
3930
if self.target._fallback_repositories:
3931
# Make sure this stacked repository has all the parent inventories
3932
# for the new revisions that we are about to insert. We do this
3933
# before adding the revisions so that no revision is added until
3934
# all the inventories it may depend on are added.
3935
# Note that this is overzealous, as we may have fetched these in an
3938
revision_ids = set()
3939
for revision in pending_revisions:
3940
revision_ids.add(revision.revision_id)
3941
parent_ids.update(revision.parent_ids)
3942
parent_ids.difference_update(revision_ids)
3943
parent_ids.discard(_mod_revision.NULL_REVISION)
3944
parent_map = self.source.get_parent_map(parent_ids)
3945
# we iterate over parent_map and not parent_ids because we don't
3946
# want to try copying any revision which is a ghost
3947
for parent_tree in self.source.revision_trees(parent_map):
3948
current_revision_id = parent_tree.get_revision_id()
3949
parents_parents = parent_map[current_revision_id]
3950
possible_trees = self._get_trees(parents_parents, cache)
3951
if len(possible_trees) == 0:
3952
# There either aren't any parents, or the parents are
3953
# ghosts, so just use the last converted tree.
3954
possible_trees.append((basis_id, cache[basis_id]))
3955
basis_id, delta = self._get_delta_for_revision(parent_tree,
3956
parents_parents, possible_trees)
3957
self.target.add_inventory_by_delta(
3958
basis_id, delta, current_revision_id, parents_parents)
3959
# insert signatures and revisions
3960
for revision in pending_revisions:
3962
signature = self.source.get_signature_text(
3963
revision.revision_id)
3964
self.target.add_signature_text(revision.revision_id,
3966
except errors.NoSuchRevision:
3968
self.target.add_revision(revision.revision_id, revision)
3971
def _fetch_all_revisions(self, revision_ids, pb):
3972
"""Fetch everything for the list of revisions.
3974
:param revision_ids: The list of revisions to fetch. Must be in
3976
:param pb: A ProgressTask
3979
basis_id, basis_tree = self._get_basis(revision_ids[0])
3981
cache = lru_cache.LRUCache(100)
3982
cache[basis_id] = basis_tree
3983
del basis_tree # We don't want to hang on to it here
3985
if self._converting_to_rich_root and len(revision_ids) > 100:
3986
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3991
for offset in range(0, len(revision_ids), batch_size):
3992
self.target.start_write_group()
3994
pb.update('Transferring revisions', offset,
3996
batch = revision_ids[offset:offset+batch_size]
3997
basis_id = self._fetch_batch(batch, basis_id, cache,
4000
self.source._safe_to_return_from_cache = False
4001
self.target.abort_write_group()
4004
hint = self.target.commit_write_group()
4007
if hints and self.target._format.pack_compresses:
4008
self.target.pack(hint=hints)
4009
pb.update('Transferring revisions', len(revision_ids),
4013
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
4015
"""See InterRepository.fetch()."""
4016
if fetch_spec is not None:
4017
raise AssertionError("Not implemented yet...")
4018
ui.ui_factory.warn_experimental_format_fetch(self)
4019
if (not self.source.supports_rich_root()
4020
and self.target.supports_rich_root()):
4021
self._converting_to_rich_root = True
4022
self._revision_id_to_root_id = {}
4024
self._converting_to_rich_root = False
4025
# See <https://launchpad.net/bugs/456077> asking for a warning here
4026
if self.source._format.network_name() != self.target._format.network_name():
4027
ui.ui_factory.show_user_warning('cross_format_fetch',
4028
from_format=self.source._format,
4029
to_format=self.target._format)
4030
revision_ids = self.target.search_missing_revision_ids(self.source,
4031
revision_id, find_ghosts=find_ghosts).get_keys()
4032
if not revision_ids:
4034
revision_ids = tsort.topo_sort(
4035
self.source.get_graph().get_parent_map(revision_ids))
4036
if not revision_ids:
4038
# Walk though all revisions; get inventory deltas, copy referenced
4039
# texts that delta references, insert the delta, revision and
4042
my_pb = ui.ui_factory.nested_progress_bar()
4045
symbol_versioning.warn(
4046
symbol_versioning.deprecated_in((1, 14, 0))
4047
% "pb parameter to fetch()")
4050
self._fetch_all_revisions(revision_ids, pb)
4052
if my_pb is not None:
2728
yield revision, tree, signature
2729
install_revisions(self.target, revisions_iterator())
4054
2730
return len(revision_ids), 0
4056
def _get_basis(self, first_revision_id):
4057
"""Get a revision and tree which exists in the target.
4059
This assumes that first_revision_id is selected for transmission
4060
because all other ancestors are already present. If we can't find an
4061
ancestor we fall back to NULL_REVISION since we know that is safe.
4063
:return: (basis_id, basis_tree)
4065
first_rev = self.source.get_revision(first_revision_id)
4067
basis_id = first_rev.parent_ids[0]
4068
# only valid as a basis if the target has it
4069
self.target.get_revision(basis_id)
4070
# Try to get a basis tree - if its a ghost it will hit the
4071
# NoSuchRevision case.
4072
basis_tree = self.source.revision_tree(basis_id)
4073
except (IndexError, errors.NoSuchRevision):
4074
basis_id = _mod_revision.NULL_REVISION
4075
basis_tree = self.source.revision_tree(basis_id)
4076
return basis_id, basis_tree
2733
class InterRemoteToOther(InterRepository):
2735
def __init__(self, source, target):
2736
InterRepository.__init__(self, source, target)
2737
self._real_inter = None
2740
def is_compatible(source, target):
2741
if not isinstance(source, remote.RemoteRepository):
2743
source._ensure_real()
2744
real_source = source._real_repository
2745
# Is source's model compatible with target's model, and are they the
2746
# same format? Currently we can only optimise fetching from an
2747
# identical model & format repo.
2748
assert not isinstance(real_source, remote.RemoteRepository), (
2749
"We don't support remote repos backed by remote repos yet.")
2750
return real_source._format == target._format
2753
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2754
"""See InterRepository.fetch()."""
2755
from bzrlib.fetch import RemoteToOtherFetcher
2756
mutter("Using fetch logic to copy between %s(remote) and %s(%s)",
2757
self.source, self.target, self.target._format)
2758
# TODO: jam 20070210 This should be an assert, not a translate
2759
revision_id = osutils.safe_revision_id(revision_id)
2760
f = RemoteToOtherFetcher(to_repository=self.target,
2761
from_repository=self.source,
2762
last_revision=revision_id,
2764
return f.count_copied, f.failed_revisions
2767
def _get_repo_format_to_test(self):
2771
class InterOtherToRemote(InterRepository):
2773
def __init__(self, source, target):
2774
InterRepository.__init__(self, source, target)
2775
self._real_inter = None
2778
def is_compatible(source, target):
2779
if isinstance(target, remote.RemoteRepository):
2783
def _ensure_real_inter(self):
2784
if self._real_inter is None:
2785
self.target._ensure_real()
2786
real_target = self.target._real_repository
2787
self._real_inter = InterRepository.get(self.source, real_target)
2789
def copy_content(self, revision_id=None):
2790
self._ensure_real_inter()
2791
self._real_inter.copy_content(revision_id=revision_id)
2793
def fetch(self, revision_id=None, pb=None, find_ghosts=False):
2794
self._ensure_real_inter()
2795
self._real_inter.fetch(revision_id=revision_id, pb=pb)
2798
def _get_repo_format_to_test(self):
4079
2802
InterRepository.register_optimiser(InterDifferingSerializer)
4080
2803
InterRepository.register_optimiser(InterSameDataRepository)
4081
2804
InterRepository.register_optimiser(InterWeaveRepo)
4082
2805
InterRepository.register_optimiser(InterKnitRepo)
2806
InterRepository.register_optimiser(InterModel1and2)
2807
InterRepository.register_optimiser(InterKnit1and2)
2808
InterRepository.register_optimiser(InterPackRepo)
2809
InterRepository.register_optimiser(InterRemoteToOther)
2810
InterRepository.register_optimiser(InterOtherToRemote)
4085
2813
class CopyConverter(object):
4086
2814
"""A repository conversion tool which just performs a copy of the content.
4088
2816
This is slow but quite reliable.
4189
2921
revision_id) tuples for versions that are present in this versioned
4190
2922
file, but not used by the corresponding inventory.
4192
local_progress = None
4193
if progress_bar is None:
4194
local_progress = ui.ui_factory.nested_progress_bar()
4195
progress_bar = local_progress
4197
return self._check_file_version_parents(texts, progress_bar)
4200
local_progress.finished()
4202
def _check_file_version_parents(self, texts, progress_bar):
4203
"""See check_file_version_parents."""
4204
2924
wrong_parents = {}
4205
self.file_ids = set([file_id for file_id, _ in
4206
self.text_index.iterkeys()])
4207
# text keys is now grouped by file_id
4208
n_versions = len(self.text_index)
4209
progress_bar.update('loading text store', 0, n_versions)
4210
parent_map = self.repository.texts.get_parent_map(self.text_index)
4211
# On unlistable transports this could well be empty/error...
4212
text_keys = self.repository.texts.keys()
4213
unused_keys = frozenset(text_keys) - set(self.text_index)
4214
for num, key in enumerate(self.text_index.iterkeys()):
4215
progress_bar.update('checking text graph', num, n_versions)
4216
correct_parents = self.calculate_file_version_parents(key)
4218
knit_parents = parent_map[key]
4219
except errors.RevisionNotPresent:
4222
if correct_parents != knit_parents:
4223
wrong_parents[key] = (knit_parents, correct_parents)
4224
return wrong_parents, unused_keys
4227
def _old_get_graph(repository, revision_id):
4228
"""DO NOT USE. That is all. I'm serious."""
4229
graph = repository.get_graph()
4230
revision_graph = dict(((key, value) for key, value in
4231
graph.iter_ancestry([revision_id]) if value is not None))
4232
return _strip_NULL_ghosts(revision_graph)
4235
def _strip_NULL_ghosts(revision_graph):
4236
"""Also don't use this. more compatibility code for unmigrated clients."""
4237
# Filter ghosts, and null:
4238
if _mod_revision.NULL_REVISION in revision_graph:
4239
del revision_graph[_mod_revision.NULL_REVISION]
4240
for key, parents in revision_graph.items():
4241
revision_graph[key] = tuple(parent for parent in parents if parent
4243
return revision_graph
4246
class StreamSink(object):
4247
"""An object that can insert a stream into a repository.
4249
This interface handles the complexity of reserialising inventories and
4250
revisions from different formats, and allows unidirectional insertion into
4251
stacked repositories without looking for the missing basis parents
4255
def __init__(self, target_repo):
4256
self.target_repo = target_repo
4258
def insert_stream(self, stream, src_format, resume_tokens):
4259
"""Insert a stream's content into the target repository.
4261
:param src_format: a bzr repository format.
4263
:return: a list of resume tokens and an iterable of keys additional
4264
items required before the insertion can be completed.
4266
self.target_repo.lock_write()
4269
self.target_repo.resume_write_group(resume_tokens)
4272
self.target_repo.start_write_group()
4275
# locked_insert_stream performs a commit|suspend.
4276
return self._locked_insert_stream(stream, src_format, is_resume)
4278
self.target_repo.abort_write_group(suppress_errors=True)
4281
self.target_repo.unlock()
4283
def _locked_insert_stream(self, stream, src_format, is_resume):
4284
to_serializer = self.target_repo._format._serializer
4285
src_serializer = src_format._serializer
4287
if to_serializer == src_serializer:
4288
# If serializers match and the target is a pack repository, set the
4289
# write cache size on the new pack. This avoids poor performance
4290
# on transports where append is unbuffered (such as
4291
# RemoteTransport). This is safe to do because nothing should read
4292
# back from the target repository while a stream with matching
4293
# serialization is being inserted.
4294
# The exception is that a delta record from the source that should
4295
# be a fulltext may need to be expanded by the target (see
4296
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4297
# explicitly flush any buffered writes first in that rare case.
4299
new_pack = self.target_repo._pack_collection._new_pack
4300
except AttributeError:
4301
# Not a pack repository
4304
new_pack.set_write_cache_size(1024*1024)
4305
for substream_type, substream in stream:
4306
if 'stream' in debug.debug_flags:
4307
mutter('inserting substream: %s', substream_type)
4308
if substream_type == 'texts':
4309
self.target_repo.texts.insert_record_stream(substream)
4310
elif substream_type == 'inventories':
4311
if src_serializer == to_serializer:
4312
self.target_repo.inventories.insert_record_stream(
4315
self._extract_and_insert_inventories(
4316
substream, src_serializer)
4317
elif substream_type == 'inventory-deltas':
4318
self._extract_and_insert_inventory_deltas(
4319
substream, src_serializer)
4320
elif substream_type == 'chk_bytes':
4321
# XXX: This doesn't support conversions, as it assumes the
4322
# conversion was done in the fetch code.
4323
self.target_repo.chk_bytes.insert_record_stream(substream)
4324
elif substream_type == 'revisions':
4325
# This may fallback to extract-and-insert more often than
4326
# required if the serializers are different only in terms of
4328
if src_serializer == to_serializer:
4329
self.target_repo.revisions.insert_record_stream(
4332
self._extract_and_insert_revisions(substream,
4334
elif substream_type == 'signatures':
4335
self.target_repo.signatures.insert_record_stream(substream)
4337
raise AssertionError('kaboom! %s' % (substream_type,))
4338
# Done inserting data, and the missing_keys calculations will try to
4339
# read back from the inserted data, so flush the writes to the new pack
4340
# (if this is pack format).
4341
if new_pack is not None:
4342
new_pack._write_data('', flush=True)
4343
# Find all the new revisions (including ones from resume_tokens)
4344
missing_keys = self.target_repo.get_missing_parent_inventories(
4345
check_for_missing_texts=is_resume)
4347
for prefix, versioned_file in (
4348
('texts', self.target_repo.texts),
4349
('inventories', self.target_repo.inventories),
4350
('revisions', self.target_repo.revisions),
4351
('signatures', self.target_repo.signatures),
4352
('chk_bytes', self.target_repo.chk_bytes),
4354
if versioned_file is None:
4356
# TODO: key is often going to be a StaticTuple object
4357
# I don't believe we can define a method by which
4358
# (prefix,) + StaticTuple will work, though we could
4359
# define a StaticTuple.sq_concat that would allow you to
4360
# pass in either a tuple or a StaticTuple as the second
4361
# object, so instead we could have:
4362
# StaticTuple(prefix) + key here...
4363
missing_keys.update((prefix,) + key for key in
4364
versioned_file.get_missing_compression_parent_keys())
4365
except NotImplementedError:
4366
# cannot even attempt suspending, and missing would have failed
4367
# during stream insertion.
4368
missing_keys = set()
4371
# suspend the write group and tell the caller what we is
4372
# missing. We know we can suspend or else we would not have
4373
# entered this code path. (All repositories that can handle
4374
# missing keys can handle suspending a write group).
4375
write_group_tokens = self.target_repo.suspend_write_group()
4376
return write_group_tokens, missing_keys
4377
hint = self.target_repo.commit_write_group()
4378
if (to_serializer != src_serializer and
4379
self.target_repo._format.pack_compresses):
4380
self.target_repo.pack(hint=hint)
4383
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4384
target_rich_root = self.target_repo._format.rich_root_data
4385
target_tree_refs = self.target_repo._format.supports_tree_reference
4386
for record in substream:
4387
# Insert the delta directly
4388
inventory_delta_bytes = record.get_bytes_as('fulltext')
4389
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4391
parse_result = deserialiser.parse_text_bytes(
4392
inventory_delta_bytes)
4393
except inventory_delta.IncompatibleInventoryDelta, err:
4394
trace.mutter("Incompatible delta: %s", err.msg)
4395
raise errors.IncompatibleRevision(self.target_repo._format)
4396
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4397
revision_id = new_id
4398
parents = [key[0] for key in record.parents]
4399
self.target_repo.add_inventory_by_delta(
4400
basis_id, inv_delta, revision_id, parents)
4402
def _extract_and_insert_inventories(self, substream, serializer,
4404
"""Generate a new inventory versionedfile in target, converting data.
4406
The inventory is retrieved from the source, (deserializing it), and
4407
stored in the target (reserializing it in a different format).
4409
target_rich_root = self.target_repo._format.rich_root_data
4410
target_tree_refs = self.target_repo._format.supports_tree_reference
4411
for record in substream:
4412
# It's not a delta, so it must be a fulltext in the source
4413
# serializer's format.
4414
bytes = record.get_bytes_as('fulltext')
4415
revision_id = record.key[0]
4416
inv = serializer.read_inventory_from_string(bytes, revision_id)
4417
parents = [key[0] for key in record.parents]
4418
self.target_repo.add_inventory(revision_id, inv, parents)
4419
# No need to keep holding this full inv in memory when the rest of
4420
# the substream is likely to be all deltas.
4423
def _extract_and_insert_revisions(self, substream, serializer):
4424
for record in substream:
4425
bytes = record.get_bytes_as('fulltext')
4426
revision_id = record.key[0]
4427
rev = serializer.read_revision_from_string(bytes)
4428
if rev.revision_id != revision_id:
4429
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4430
self.target_repo.add_revision(revision_id, rev)
4433
if self.target_repo._format._fetch_reconcile:
4434
self.target_repo.reconcile()
4437
class StreamSource(object):
4438
"""A source of a stream for fetching between repositories."""
4440
def __init__(self, from_repository, to_format):
4441
"""Create a StreamSource streaming from from_repository."""
4442
self.from_repository = from_repository
4443
self.to_format = to_format
4445
def delta_on_metadata(self):
4446
"""Return True if delta's are permitted on metadata streams.
4448
That is on revisions and signatures.
4450
src_serializer = self.from_repository._format._serializer
4451
target_serializer = self.to_format._serializer
4452
return (self.to_format._fetch_uses_deltas and
4453
src_serializer == target_serializer)
4455
def _fetch_revision_texts(self, revs):
4456
# fetch signatures first and then the revision texts
4457
# may need to be a InterRevisionStore call here.
4458
from_sf = self.from_repository.signatures
4459
# A missing signature is just skipped.
4460
keys = [(rev_id,) for rev_id in revs]
4461
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4463
self.to_format._fetch_order,
4464
not self.to_format._fetch_uses_deltas))
4465
# If a revision has a delta, this is actually expanded inside the
4466
# insert_record_stream code now, which is an alternate fix for
4468
from_rf = self.from_repository.revisions
4469
revisions = from_rf.get_record_stream(
4471
self.to_format._fetch_order,
4472
not self.delta_on_metadata())
4473
return [('signatures', signatures), ('revisions', revisions)]
4475
def _generate_root_texts(self, revs):
4476
"""This will be called by get_stream between fetching weave texts and
4477
fetching the inventory weave.
4479
if self._rich_root_upgrade():
4480
return _mod_fetch.Inter1and2Helper(
4481
self.from_repository).generate_root_texts(revs)
4485
def get_stream(self, search):
4487
revs = search.get_keys()
4488
graph = self.from_repository.get_graph()
4489
revs = tsort.topo_sort(graph.get_parent_map(revs))
4490
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4492
for knit_kind, file_id, revisions in data_to_fetch:
4493
if knit_kind != phase:
4495
# Make a new progress bar for this phase
4496
if knit_kind == "file":
4497
# Accumulate file texts
4498
text_keys.extend([(file_id, revision) for revision in
4500
elif knit_kind == "inventory":
4501
# Now copy the file texts.
4502
from_texts = self.from_repository.texts
4503
yield ('texts', from_texts.get_record_stream(
4504
text_keys, self.to_format._fetch_order,
4505
not self.to_format._fetch_uses_deltas))
4506
# Cause an error if a text occurs after we have done the
4509
# Before we process the inventory we generate the root
4510
# texts (if necessary) so that the inventories references
4512
for _ in self._generate_root_texts(revs):
4514
# we fetch only the referenced inventories because we do not
4515
# know for unselected inventories whether all their required
4516
# texts are present in the other repository - it could be
4518
for info in self._get_inventory_stream(revs):
4520
elif knit_kind == "signatures":
4521
# Nothing to do here; this will be taken care of when
4522
# _fetch_revision_texts happens.
4524
elif knit_kind == "revisions":
4525
for record in self._fetch_revision_texts(revs):
4528
raise AssertionError("Unknown knit kind %r" % knit_kind)
4530
def get_stream_for_missing_keys(self, missing_keys):
4531
# missing keys can only occur when we are byte copying and not
4532
# translating (because translation means we don't send
4533
# unreconstructable deltas ever).
4535
keys['texts'] = set()
4536
keys['revisions'] = set()
4537
keys['inventories'] = set()
4538
keys['chk_bytes'] = set()
4539
keys['signatures'] = set()
4540
for key in missing_keys:
4541
keys[key[0]].add(key[1:])
4542
if len(keys['revisions']):
4543
# If we allowed copying revisions at this point, we could end up
4544
# copying a revision without copying its required texts: a
4545
# violation of the requirements for repository integrity.
4546
raise AssertionError(
4547
'cannot copy revisions to fill in missing deltas %s' % (
4548
keys['revisions'],))
4549
for substream_kind, keys in keys.iteritems():
4550
vf = getattr(self.from_repository, substream_kind)
4551
if vf is None and keys:
4552
raise AssertionError(
4553
"cannot fill in keys for a versioned file we don't"
4554
" have: %s needs %s" % (substream_kind, keys))
4556
# No need to stream something we don't have
4558
if substream_kind == 'inventories':
4559
# Some missing keys are genuinely ghosts, filter those out.
4560
present = self.from_repository.inventories.get_parent_map(keys)
4561
revs = [key[0] for key in present]
4562
# Get the inventory stream more-or-less as we do for the
4563
# original stream; there's no reason to assume that records
4564
# direct from the source will be suitable for the sink. (Think
4565
# e.g. 2a -> 1.9-rich-root).
4566
for info in self._get_inventory_stream(revs, missing=True):
4570
# Ask for full texts always so that we don't need more round trips
4571
# after this stream.
4572
# Some of the missing keys are genuinely ghosts, so filter absent
4573
# records. The Sink is responsible for doing another check to
4574
# ensure that ghosts don't introduce missing data for future
4576
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4577
self.to_format._fetch_order, True))
4578
yield substream_kind, stream
4580
def inventory_fetch_order(self):
4581
if self._rich_root_upgrade():
4582
return 'topological'
4584
return self.to_format._fetch_order
4586
def _rich_root_upgrade(self):
4587
return (not self.from_repository._format.rich_root_data and
4588
self.to_format.rich_root_data)
4590
def _get_inventory_stream(self, revision_ids, missing=False):
4591
from_format = self.from_repository._format
4592
if (from_format.supports_chks and self.to_format.supports_chks and
4593
from_format.network_name() == self.to_format.network_name()):
4594
raise AssertionError(
4595
"this case should be handled by GroupCHKStreamSource")
4596
elif 'forceinvdeltas' in debug.debug_flags:
4597
return self._get_convertable_inventory_stream(revision_ids,
4598
delta_versus_null=missing)
4599
elif from_format.network_name() == self.to_format.network_name():
4601
return self._get_simple_inventory_stream(revision_ids,
4603
elif (not from_format.supports_chks and not self.to_format.supports_chks
4604
and from_format._serializer == self.to_format._serializer):
4605
# Essentially the same format.
4606
return self._get_simple_inventory_stream(revision_ids,
4609
# Any time we switch serializations, we want to use an
4610
# inventory-delta based approach.
4611
return self._get_convertable_inventory_stream(revision_ids,
4612
delta_versus_null=missing)
4614
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4615
# NB: This currently reopens the inventory weave in source;
4616
# using a single stream interface instead would avoid this.
4617
from_weave = self.from_repository.inventories
4619
delta_closure = True
4621
delta_closure = not self.delta_on_metadata()
4622
yield ('inventories', from_weave.get_record_stream(
4623
[(rev_id,) for rev_id in revision_ids],
4624
self.inventory_fetch_order(), delta_closure))
4626
def _get_convertable_inventory_stream(self, revision_ids,
4627
delta_versus_null=False):
4628
# The two formats are sufficiently different that there is no fast
4629
# path, so we need to send just inventorydeltas, which any
4630
# sufficiently modern client can insert into any repository.
4631
# The StreamSink code expects to be able to
4632
# convert on the target, so we need to put bytes-on-the-wire that can
4633
# be converted. That means inventory deltas (if the remote is <1.19,
4634
# RemoteStreamSink will fallback to VFS to insert the deltas).
4635
yield ('inventory-deltas',
4636
self._stream_invs_as_deltas(revision_ids,
4637
delta_versus_null=delta_versus_null))
4639
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4640
"""Return a stream of inventory-deltas for the given rev ids.
4642
:param revision_ids: The list of inventories to transmit
4643
:param delta_versus_null: Don't try to find a minimal delta for this
4644
entry, instead compute the delta versus the NULL_REVISION. This
4645
effectively streams a complete inventory. Used for stuff like
4646
filling in missing parents, etc.
4648
from_repo = self.from_repository
4649
revision_keys = [(rev_id,) for rev_id in revision_ids]
4650
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4651
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4653
inventories = self.from_repository.iter_inventories(
4654
revision_ids, 'topological')
4655
format = from_repo._format
4656
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4657
inventory_cache = lru_cache.LRUCache(50)
4658
null_inventory = from_repo.revision_tree(
4659
_mod_revision.NULL_REVISION).inventory
4660
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4661
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4662
# repo back into a non-rich-root repo ought to be allowed)
4663
serializer = inventory_delta.InventoryDeltaSerializer(
4664
versioned_root=format.rich_root_data,
4665
tree_references=format.supports_tree_reference)
4666
for inv in inventories:
4667
key = (inv.revision_id,)
4668
parent_keys = parent_map.get(key, ())
4670
if not delta_versus_null and parent_keys:
4671
# The caller did not ask for complete inventories and we have
4672
# some parents that we can delta against. Make a delta against
4673
# each parent so that we can find the smallest.
4674
parent_ids = [parent_key[0] for parent_key in parent_keys]
4675
for parent_id in parent_ids:
4676
if parent_id not in invs_sent_so_far:
4677
# We don't know that the remote side has this basis, so
4680
if parent_id == _mod_revision.NULL_REVISION:
4681
parent_inv = null_inventory
4683
parent_inv = inventory_cache.get(parent_id, None)
4684
if parent_inv is None:
4685
parent_inv = from_repo.get_inventory(parent_id)
4686
candidate_delta = inv._make_delta(parent_inv)
4687
if (delta is None or
4688
len(delta) > len(candidate_delta)):
4689
delta = candidate_delta
4690
basis_id = parent_id
4692
# Either none of the parents ended up being suitable, or we
4693
# were asked to delta against NULL
4694
basis_id = _mod_revision.NULL_REVISION
4695
delta = inv._make_delta(null_inventory)
4696
invs_sent_so_far.add(inv.revision_id)
4697
inventory_cache[inv.revision_id] = inv
4698
delta_serialized = ''.join(
4699
serializer.delta_to_lines(basis_id, key[-1], delta))
4700
yield versionedfile.FulltextContentFactory(
4701
key, parent_keys, None, delta_serialized)
4704
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4705
stop_revision=None):
4706
"""Extend the partial history to include a given index
4708
If a stop_index is supplied, stop when that index has been reached.
4709
If a stop_revision is supplied, stop when that revision is
4710
encountered. Otherwise, stop when the beginning of history is
4713
:param stop_index: The index which should be present. When it is
4714
present, history extension will stop.
4715
:param stop_revision: The revision id which should be present. When
4716
it is encountered, history extension will stop.
4718
start_revision = partial_history_cache[-1]
4719
iterator = repo.iter_reverse_revision_history(start_revision)
4721
#skip the last revision in the list
4724
if (stop_index is not None and
4725
len(partial_history_cache) > stop_index):
4727
if partial_history_cache[-1] == stop_revision:
4729
revision_id = iterator.next()
4730
partial_history_cache.append(revision_id)
4731
except StopIteration:
2925
unused_versions = set()
2926
for num, revision_id in enumerate(weave.versions()):
2928
correct_parents = self.calculate_file_version_parents(
2929
revision_id, file_id)
2931
# The version is not part of the used keys.
2932
unused_versions.add(revision_id)
2935
knit_parents = tuple(weave.get_parents(revision_id))
2936
except errors.RevisionNotPresent:
2938
if correct_parents != knit_parents:
2939
wrong_parents[revision_id] = (knit_parents, correct_parents)
2940
return wrong_parents, unused_versions
added
removed
bzrlib/repository.py
