556
390
# unchanged, carry over.
557
391
ie.reference_revision = parent_entry.reference_revision
558
392
ie.revision = parent_entry.revision
559
return self._get_delta(ie, basis_inv, path), False, None
393
return self._get_delta(ie, basis_inv, path), False
560
394
ie.reference_revision = content_summary[3]
561
if ie.reference_revision is None:
562
raise AssertionError("invalid content_summary for nested tree: %r"
563
% (content_summary,))
564
self._add_text_to_weave(ie.file_id, '', heads, None)
396
self._add_text_to_weave(ie.file_id, lines, heads, None)
566
398
raise NotImplementedError('unknown kind')
567
399
ie.revision = self._new_revision_id
568
self._any_changes = True
569
return self._get_delta(ie, basis_inv, path), True, fingerprint
571
def record_iter_changes(self, tree, basis_revision_id, iter_changes,
572
_entry_factory=entry_factory):
573
"""Record a new tree via iter_changes.
575
:param tree: The tree to obtain text contents from for changed objects.
576
:param basis_revision_id: The revision id of the tree the iter_changes
577
has been generated against. Currently assumed to be the same
578
as self.parents[0] - if it is not, errors may occur.
579
:param iter_changes: An iter_changes iterator with the changes to apply
580
to basis_revision_id. The iterator must not include any items with
581
a current kind of None - missing items must be either filtered out
582
or errored-on beefore record_iter_changes sees the item.
583
:param _entry_factory: Private method to bind entry_factory locally for
585
:return: A generator of (file_id, relpath, fs_hash) tuples for use with
588
# Create an inventory delta based on deltas between all the parents and
589
# deltas between all the parent inventories. We use inventory delta's
590
# between the inventory objects because iter_changes masks
591
# last-changed-field only changes.
593
# file_id -> change map, change is fileid, paths, changed, versioneds,
594
# parents, names, kinds, executables
596
# {file_id -> revision_id -> inventory entry, for entries in parent
597
# trees that are not parents[0]
400
return self._get_delta(ie, basis_inv, path), True
402
def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
403
versionedfile = self.repository.weave_store.get_weave_or_empty(
404
file_id, self.repository.get_transaction())
405
# Don't change this to add_lines - add_lines_with_ghosts is cheaper
406
# than add_lines, and allows committing when a parent is ghosted for
408
# Note: as we read the content directly from the tree, we know its not
409
# been turned into unicode or badly split - but a broken tree
410
# implementation could give us bad output from readlines() so this is
411
# not a guarantee of safety. What would be better is always checking
412
# the content during test suite execution. RBC 20070912
601
revtrees = list(self.repository.revision_trees(self.parents))
602
except errors.NoSuchRevision:
603
# one or more ghosts, slow path.
605
for revision_id in self.parents:
607
revtrees.append(self.repository.revision_tree(revision_id))
608
except errors.NoSuchRevision:
610
basis_revision_id = _mod_revision.NULL_REVISION
612
revtrees.append(self.repository.revision_tree(
613
_mod_revision.NULL_REVISION))
614
# The basis inventory from a repository
616
basis_inv = revtrees[0].inventory
618
basis_inv = self.repository.revision_tree(
619
_mod_revision.NULL_REVISION).inventory
620
if len(self.parents) > 0:
621
if basis_revision_id != self.parents[0] and not ghost_basis:
623
"arbitrary basis parents not yet supported with merges")
624
for revtree in revtrees[1:]:
625
for change in revtree.inventory._make_delta(basis_inv):
626
if change[1] is None:
627
# Not present in this parent.
629
if change[2] not in merged_ids:
630
if change[0] is not None:
631
basis_entry = basis_inv[change[2]]
632
merged_ids[change[2]] = [
634
basis_entry.revision,
637
parent_entries[change[2]] = {
639
basis_entry.revision:basis_entry,
641
change[3].revision:change[3],
644
merged_ids[change[2]] = [change[3].revision]
645
parent_entries[change[2]] = {change[3].revision:change[3]}
647
merged_ids[change[2]].append(change[3].revision)
648
parent_entries[change[2]][change[3].revision] = change[3]
651
# Setup the changes from the tree:
652
# changes maps file_id -> (change, [parent revision_ids])
654
for change in iter_changes:
655
# This probably looks up in basis_inv way to much.
656
if change[1][0] is not None:
657
head_candidate = [basis_inv[change[0]].revision]
660
changes[change[0]] = change, merged_ids.get(change[0],
662
unchanged_merged = set(merged_ids) - set(changes)
663
# Extend the changes dict with synthetic changes to record merges of
665
for file_id in unchanged_merged:
666
# Record a merged version of these items that did not change vs the
667
# basis. This can be either identical parallel changes, or a revert
668
# of a specific file after a merge. The recorded content will be
669
# that of the current tree (which is the same as the basis), but
670
# the per-file graph will reflect a merge.
671
# NB:XXX: We are reconstructing path information we had, this
672
# should be preserved instead.
673
# inv delta change: (file_id, (path_in_source, path_in_target),
674
# changed_content, versioned, parent, name, kind,
677
basis_entry = basis_inv[file_id]
678
except errors.NoSuchId:
679
# a change from basis->some_parents but file_id isn't in basis
680
# so was new in the merge, which means it must have changed
681
# from basis -> current, and as it hasn't the add was reverted
682
# by the user. So we discard this change.
686
(basis_inv.id2path(file_id), tree.id2path(file_id)),
688
(basis_entry.parent_id, basis_entry.parent_id),
689
(basis_entry.name, basis_entry.name),
690
(basis_entry.kind, basis_entry.kind),
691
(basis_entry.executable, basis_entry.executable))
692
changes[file_id] = (change, merged_ids[file_id])
693
# changes contains tuples with the change and a set of inventory
694
# candidates for the file.
696
# old_path, new_path, file_id, new_inventory_entry
697
seen_root = False # Is the root in the basis delta?
698
inv_delta = self._basis_delta
699
modified_rev = self._new_revision_id
700
for change, head_candidates in changes.values():
701
if change[3][1]: # versioned in target.
702
# Several things may be happening here:
703
# We may have a fork in the per-file graph
704
# - record a change with the content from tree
705
# We may have a change against < all trees
706
# - carry over the tree that hasn't changed
707
# We may have a change against all trees
708
# - record the change with the content from tree
711
entry = _entry_factory[kind](file_id, change[5][1],
713
head_set = self._heads(change[0], set(head_candidates))
716
for head_candidate in head_candidates:
717
if head_candidate in head_set:
718
heads.append(head_candidate)
719
head_set.remove(head_candidate)
722
# Could be a carry-over situation:
723
parent_entry_revs = parent_entries.get(file_id, None)
724
if parent_entry_revs:
725
parent_entry = parent_entry_revs.get(heads[0], None)
728
if parent_entry is None:
729
# The parent iter_changes was called against is the one
730
# that is the per-file head, so any change is relevant
731
# iter_changes is valid.
732
carry_over_possible = False
734
# could be a carry over situation
735
# A change against the basis may just indicate a merge,
736
# we need to check the content against the source of the
737
# merge to determine if it was changed after the merge
739
if (parent_entry.kind != entry.kind or
740
parent_entry.parent_id != entry.parent_id or
741
parent_entry.name != entry.name):
742
# Metadata common to all entries has changed
743
# against per-file parent
744
carry_over_possible = False
746
carry_over_possible = True
747
# per-type checks for changes against the parent_entry
750
# Cannot be a carry-over situation
751
carry_over_possible = False
752
# Populate the entry in the delta
754
# XXX: There is still a small race here: If someone reverts the content of a file
755
# after iter_changes examines and decides it has changed,
756
# we will unconditionally record a new version even if some
757
# other process reverts it while commit is running (with
758
# the revert happening after iter_changes did it's
761
entry.executable = True
763
entry.executable = False
764
if (carry_over_possible and
765
parent_entry.executable == entry.executable):
766
# Check the file length, content hash after reading
768
nostore_sha = parent_entry.text_sha1
771
file_obj, stat_value = tree.get_file_with_stat(file_id, change[1][1])
773
text = file_obj.read()
777
entry.text_sha1, entry.text_size = self._add_text_to_weave(
778
file_id, text, heads, nostore_sha)
779
yield file_id, change[1][1], (entry.text_sha1, stat_value)
780
except errors.ExistingContent:
781
# No content change against a carry_over parent
782
# Perhaps this should also yield a fs hash update?
784
entry.text_size = parent_entry.text_size
785
entry.text_sha1 = parent_entry.text_sha1
786
elif kind == 'symlink':
788
entry.symlink_target = tree.get_symlink_target(file_id)
789
if (carry_over_possible and
790
parent_entry.symlink_target == entry.symlink_target):
793
self._add_text_to_weave(change[0], '', heads, None)
794
elif kind == 'directory':
795
if carry_over_possible:
798
# Nothing to set on the entry.
799
# XXX: split into the Root and nonRoot versions.
800
if change[1][1] != '' or self.repository.supports_rich_root():
801
self._add_text_to_weave(change[0], '', heads, None)
802
elif kind == 'tree-reference':
803
if not self.repository._format.supports_tree_reference:
804
# This isn't quite sane as an error, but we shouldn't
805
# ever see this code path in practice: tree's don't
806
# permit references when the repo doesn't support tree
808
raise errors.UnsupportedOperation(tree.add_reference,
810
reference_revision = tree.get_reference_revision(change[0])
811
entry.reference_revision = reference_revision
812
if (carry_over_possible and
813
parent_entry.reference_revision == reference_revision):
816
self._add_text_to_weave(change[0], '', heads, None)
818
raise AssertionError('unknown kind %r' % kind)
820
entry.revision = modified_rev
822
entry.revision = parent_entry.revision
825
new_path = change[1][1]
826
inv_delta.append((change[1][0], new_path, change[0], entry))
829
self.new_inventory = None
831
# This should perhaps be guarded by a check that the basis we
832
# commit against is the basis for the commit and if not do a delta
834
self._any_changes = True
836
# housekeeping root entry changes do not affect no-change commits.
837
self._require_root_change(tree)
838
self.basis_delta_revision = basis_revision_id
840
def _add_text_to_weave(self, file_id, new_text, parents, nostore_sha):
841
parent_keys = tuple([(file_id, parent) for parent in parents])
842
return self.repository.texts._add_text(
843
(file_id, self._new_revision_id), parent_keys, new_text,
844
nostore_sha=nostore_sha, random_id=self.random_revid)[0:2]
414
return versionedfile.add_lines_with_ghosts(
415
self._new_revision_id, parents, new_lines,
416
nostore_sha=nostore_sha, random_id=self.random_revid,
417
check_content=False)[0:2]
419
versionedfile.clear_cache()
847
422
class RootCommitBuilder(CommitBuilder):
848
423
"""This commitbuilder actually records the root id"""
850
425
# the root entry gets versioned properly by this builder.
851
426
_versioned_root = True
1001
def add_fallback_repository(self, repository):
1002
"""Add a repository to use for looking up data not held locally.
1004
:param repository: A repository.
1006
if not self._format.supports_external_lookups:
1007
raise errors.UnstackableRepositoryFormat(self._format, self.base)
1008
if self.is_locked():
1009
# This repository will call fallback.unlock() when we transition to
1010
# the unlocked state, so we make sure to increment the lock count
1011
repository.lock_read()
1012
self._check_fallback_repository(repository)
1013
self._fallback_repositories.append(repository)
1014
self.texts.add_fallback_versioned_files(repository.texts)
1015
self.inventories.add_fallback_versioned_files(repository.inventories)
1016
self.revisions.add_fallback_versioned_files(repository.revisions)
1017
self.signatures.add_fallback_versioned_files(repository.signatures)
1018
if self.chk_bytes is not None:
1019
self.chk_bytes.add_fallback_versioned_files(repository.chk_bytes)
1021
def _check_fallback_repository(self, repository):
1022
"""Check that this repository can fallback to repository safely.
1024
Raise an error if not.
1026
:param repository: A repository to fallback to.
1028
return InterRepository._assert_same_model(self, repository)
1030
489
def add_inventory(self, revision_id, inv, parents):
1031
490
"""Add the inventory inv to the repository as revision_id.
1033
492
:param parents: The revision ids of the parents that revision_id
1034
493
is known to have and are in the repository already.
1036
:returns: The validator(which is a sha1 digest, though what is sha'd is
1037
repository format specific) of the serialized inventory.
495
returns the sha1 of the serialized inventory.
1039
if not self.is_in_write_group():
1040
raise AssertionError("%r not in write group" % (self,))
497
assert self.is_in_write_group()
1041
498
_mod_revision.check_not_reserved_id(revision_id)
1042
if not (inv.revision_id is None or inv.revision_id == revision_id):
1043
raise AssertionError(
1044
"Mismatch between inventory revision"
1045
" id and insertion revid (%r, %r)"
1046
% (inv.revision_id, revision_id))
1047
if inv.root is None:
1048
raise AssertionError()
1049
return self._add_inventory_checked(revision_id, inv, parents)
1051
def _add_inventory_checked(self, revision_id, inv, parents):
1052
"""Add inv to the repository after checking the inputs.
1054
This function can be overridden to allow different inventory styles.
1056
:seealso: add_inventory, for the contract.
1058
inv_lines = self._serializer.write_inventory_to_lines(inv)
1059
return self._inventory_add_lines(revision_id, parents,
499
assert inv.revision_id is None or inv.revision_id == revision_id, \
500
"Mismatch between inventory revision" \
501
" id and insertion revid (%r, %r)" % (inv.revision_id, revision_id)
502
assert inv.root is not None
503
inv_lines = self._serialise_inventory_to_lines(inv)
504
inv_vf = self.get_inventory_weave()
505
return self._inventory_add_lines(inv_vf, revision_id, parents,
1060
506
inv_lines, check_content=False)
1062
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1063
parents, basis_inv=None, propagate_caches=False):
1064
"""Add a new inventory expressed as a delta against another revision.
1066
See the inventory developers documentation for the theory behind
1069
:param basis_revision_id: The inventory id the delta was created
1070
against. (This does not have to be a direct parent.)
1071
:param delta: The inventory delta (see Inventory.apply_delta for
1073
:param new_revision_id: The revision id that the inventory is being
1075
:param parents: The revision ids of the parents that revision_id is
1076
known to have and are in the repository already. These are supplied
1077
for repositories that depend on the inventory graph for revision
1078
graph access, as well as for those that pun ancestry with delta
1080
:param basis_inv: The basis inventory if it is already known,
1082
:param propagate_caches: If True, the caches for this inventory are
1083
copied to and updated for the result if possible.
1085
:returns: (validator, new_inv)
1086
The validator(which is a sha1 digest, though what is sha'd is
1087
repository format specific) of the serialized inventory, and the
1088
resulting inventory.
1090
if not self.is_in_write_group():
1091
raise AssertionError("%r not in write group" % (self,))
1092
_mod_revision.check_not_reserved_id(new_revision_id)
1093
basis_tree = self.revision_tree(basis_revision_id)
1094
basis_tree.lock_read()
1096
# Note that this mutates the inventory of basis_tree, which not all
1097
# inventory implementations may support: A better idiom would be to
1098
# return a new inventory, but as there is no revision tree cache in
1099
# repository this is safe for now - RBC 20081013
1100
if basis_inv is None:
1101
basis_inv = basis_tree.inventory
1102
basis_inv.apply_delta(delta)
1103
basis_inv.revision_id = new_revision_id
1104
return (self.add_inventory(new_revision_id, basis_inv, parents),
1109
def _inventory_add_lines(self, revision_id, parents, lines,
508
def _inventory_add_lines(self, inv_vf, revision_id, parents, lines,
1110
509
check_content=True):
1111
510
"""Store lines in inv_vf and return the sha1 of the inventory."""
1112
parents = [(parent,) for parent in parents]
1113
result = self.inventories.add_lines((revision_id,), parents, lines,
512
for parent in parents:
514
final_parents.append(parent)
515
return inv_vf.add_lines(revision_id, final_parents, lines,
1114
516
check_content=check_content)[0]
1115
self.inventories._access.flush()
1118
519
def add_revision(self, revision_id, rev, inv=None, config=None):
1119
520
"""Add rev to the revision store as revision_id.
1190
585
Returns a set of the present revisions.
1193
graph = self.get_graph()
1194
parent_map = graph.get_parent_map(revision_ids)
1195
# The old API returned a list, should this actually be a set?
1196
return parent_map.keys()
1198
def _check_inventories(self, checker):
1199
"""Check the inventories found from the revision scan.
1201
This is responsible for verifying the sha1 of inventories and
1202
creating a pending_keys set that covers data referenced by inventories.
1204
bar = ui.ui_factory.nested_progress_bar()
1206
self._do_check_inventories(checker, bar)
1210
def _do_check_inventories(self, checker, bar):
1211
"""Helper for _check_inventories."""
1213
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1214
kinds = ['chk_bytes', 'texts']
1215
count = len(checker.pending_keys)
1216
bar.update("inventories", 0, 2)
1217
current_keys = checker.pending_keys
1218
checker.pending_keys = {}
1219
# Accumulate current checks.
1220
for key in current_keys:
1221
if key[0] != 'inventories' and key[0] not in kinds:
1222
checker._report_items.append('unknown key type %r' % (key,))
1223
keys[key[0]].add(key[1:])
1224
if keys['inventories']:
1225
# NB: output order *should* be roughly sorted - topo or
1226
# inverse topo depending on repository - either way decent
1227
# to just delta against. However, pre-CHK formats didn't
1228
# try to optimise inventory layout on disk. As such the
1229
# pre-CHK code path does not use inventory deltas.
1231
for record in self.inventories.check(keys=keys['inventories']):
1232
if record.storage_kind == 'absent':
1233
checker._report_items.append(
1234
'Missing inventory {%s}' % (record.key,))
1236
last_object = self._check_record('inventories', record,
1237
checker, last_object,
1238
current_keys[('inventories',) + record.key])
1239
del keys['inventories']
1242
bar.update("texts", 1)
1243
while (checker.pending_keys or keys['chk_bytes']
1245
# Something to check.
1246
current_keys = checker.pending_keys
1247
checker.pending_keys = {}
1248
# Accumulate current checks.
1249
for key in current_keys:
1250
if key[0] not in kinds:
1251
checker._report_items.append('unknown key type %r' % (key,))
1252
keys[key[0]].add(key[1:])
1253
# Check the outermost kind only - inventories || chk_bytes || texts
1257
for record in getattr(self, kind).check(keys=keys[kind]):
1258
if record.storage_kind == 'absent':
1259
checker._report_items.append(
1260
'Missing %s {%s}' % (kind, record.key,))
1262
last_object = self._check_record(kind, record,
1263
checker, last_object, current_keys[(kind,) + record.key])
1267
def _check_record(self, kind, record, checker, last_object, item_data):
1268
"""Check a single text from this repository."""
1269
if kind == 'inventories':
1270
rev_id = record.key[0]
1271
inv = self._deserialise_inventory(rev_id,
1272
record.get_bytes_as('fulltext'))
1273
if last_object is not None:
1274
delta = inv._make_delta(last_object)
1275
for old_path, path, file_id, ie in delta:
1278
ie.check(checker, rev_id, inv)
1280
for path, ie in inv.iter_entries():
1281
ie.check(checker, rev_id, inv)
1282
if self._format.fast_deltas:
1284
elif kind == 'chk_bytes':
1285
# No code written to check chk_bytes for this repo format.
1286
checker._report_items.append(
1287
'unsupported key type chk_bytes for %s' % (record.key,))
1288
elif kind == 'texts':
1289
self._check_text(record, checker, item_data)
1291
checker._report_items.append(
1292
'unknown key type %s for %s' % (kind, record.key))
1294
def _check_text(self, record, checker, item_data):
1295
"""Check a single text."""
1296
# Check it is extractable.
1297
# TODO: check length.
1298
if record.storage_kind == 'chunked':
1299
chunks = record.get_bytes_as(record.storage_kind)
1300
sha1 = osutils.sha_strings(chunks)
1301
length = sum(map(len, chunks))
1303
content = record.get_bytes_as('fulltext')
1304
sha1 = osutils.sha_string(content)
1305
length = len(content)
1306
if item_data and sha1 != item_data[1]:
1307
checker._report_items.append(
1308
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1309
(record.key, sha1, item_data[1], item_data[2]))
588
for id in revision_ids:
589
if self.has_revision(id):
1312
594
def create(a_bzrdir):
1313
595
"""Construct the current default format repository in a_bzrdir."""
1314
596
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
1316
def __init__(self, _format, a_bzrdir, control_files):
598
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1317
599
"""instantiate a Repository.
1319
601
:param _format: The format of the repository on disk.
1320
602
:param a_bzrdir: The BzrDir of the repository.
604
In the future we will have a single api for all stores for
605
getting file texts, inventories and revisions, then
606
this construct will accept instances of those things.
1322
# In the future we will have a single api for all stores for
1323
# getting file texts, inventories and revisions, then
1324
# this construct will accept instances of those things.
1325
608
super(Repository, self).__init__()
1326
609
self._format = _format
1327
610
# the following are part of the public API for Repository:
1328
611
self.bzrdir = a_bzrdir
1329
612
self.control_files = control_files
1330
self._transport = control_files._transport
1331
self.base = self._transport.base
613
self._revision_store = _revision_store
614
# backwards compatibility
615
self.weave_store = text_store
1333
617
self._reconcile_does_inventory_gc = True
1334
618
self._reconcile_fixes_text_parents = False
1335
self._reconcile_backsup_inventory = True
619
# not right yet - should be more semantically clear ?
621
self.control_store = control_store
622
self.control_weaves = control_store
623
# TODO: make sure to construct the right store classes, etc, depending
624
# on whether escaping is required.
625
self._warn_if_deprecated()
1336
626
self._write_group = None
1337
# Additional places to query for data.
1338
self._fallback_repositories = []
1339
# An InventoryEntry cache, used during deserialization
1340
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1341
# Is it safe to return inventory entries directly from the entry cache,
1342
# rather copying them?
1343
self._safe_to_return_from_cache = False
1346
def user_transport(self):
1347
return self.bzrdir.user_transport
1350
def control_transport(self):
1351
return self._transport
627
self.base = control_files._transport.base
1353
629
def __repr__(self):
1354
if self._fallback_repositories:
1355
return '%s(%r, fallback_repositories=%r)' % (
1356
self.__class__.__name__,
1358
self._fallback_repositories)
1360
return '%s(%r)' % (self.__class__.__name__,
1363
def _has_same_fallbacks(self, other_repo):
1364
"""Returns true if the repositories have the same fallbacks."""
1365
my_fb = self._fallback_repositories
1366
other_fb = other_repo._fallback_repositories
1367
if len(my_fb) != len(other_fb):
1369
for f, g in zip(my_fb, other_fb):
1370
if not f.has_same_location(g):
630
return '%s(%r)' % (self.__class__.__name__,
1374
633
def has_same_location(self, other):
1375
634
"""Returns a boolean indicating if this repository is at the same
1588
822
"""Commit the contents accrued within the current write group.
1590
824
:seealso: start_write_group.
1592
:return: it may return an opaque hint that can be passed to 'pack'.
1594
826
if self._write_group is not self.get_transaction():
1595
827
# has an unlock or relock occured ?
1596
828
raise errors.BzrError('mismatched lock context %r and '
1597
829
'write group %r.' %
1598
830
(self.get_transaction(), self._write_group))
1599
result = self._commit_write_group()
831
self._commit_write_group()
1600
832
self._write_group = None
1603
834
def _commit_write_group(self):
1604
835
"""Template method for per-repository write group cleanup.
1606
This is called before the write group is considered to be
837
This is called before the write group is considered to be
1607
838
finished and should ensure that all data handed to the repository
1608
for writing during the write group is safely committed (to the
839
for writing during the write group is safely committed (to the
1609
840
extent possible considering file system caching etc).
1612
def suspend_write_group(self):
1613
raise errors.UnsuspendableWriteGroup(self)
1615
def get_missing_parent_inventories(self, check_for_missing_texts=True):
1616
"""Return the keys of missing inventory parents for revisions added in
1619
A revision is not complete if the inventory delta for that revision
1620
cannot be calculated. Therefore if the parent inventories of a
1621
revision are not present, the revision is incomplete, and e.g. cannot
1622
be streamed by a smart server. This method finds missing inventory
1623
parents for revisions added in this write group.
1625
if not self._format.supports_external_lookups:
1626
# This is only an issue for stacked repositories
1628
if not self.is_in_write_group():
1629
raise AssertionError('not in a write group')
1631
# XXX: We assume that every added revision already has its
1632
# corresponding inventory, so we only check for parent inventories that
1633
# might be missing, rather than all inventories.
1634
parents = set(self.revisions._index.get_missing_parents())
1635
parents.discard(_mod_revision.NULL_REVISION)
1636
unstacked_inventories = self.inventories._index
1637
present_inventories = unstacked_inventories.get_parent_map(
1638
key[-1:] for key in parents)
1639
parents.difference_update(present_inventories)
1640
if len(parents) == 0:
1641
# No missing parent inventories.
1643
if not check_for_missing_texts:
1644
return set(('inventories', rev_id) for (rev_id,) in parents)
1645
# Ok, now we have a list of missing inventories. But these only matter
1646
# if the inventories that reference them are missing some texts they
1647
# appear to introduce.
1648
# XXX: Texts referenced by all added inventories need to be present,
1649
# but at the moment we're only checking for texts referenced by
1650
# inventories at the graph's edge.
1651
key_deps = self.revisions._index._key_dependencies
1652
key_deps.satisfy_refs_for_keys(present_inventories)
1653
referrers = frozenset(r[0] for r in key_deps.get_referrers())
1654
file_ids = self.fileids_altered_by_revision_ids(referrers)
1655
missing_texts = set()
1656
for file_id, version_ids in file_ids.iteritems():
1657
missing_texts.update(
1658
(file_id, version_id) for version_id in version_ids)
1659
present_texts = self.texts.get_parent_map(missing_texts)
1660
missing_texts.difference_update(present_texts)
1661
if not missing_texts:
1662
# No texts are missing, so all revisions and their deltas are
1665
# Alternatively the text versions could be returned as the missing
1666
# keys, but this is likely to be less data.
1667
missing_keys = set(('inventories', rev_id) for (rev_id,) in parents)
1670
def refresh_data(self):
1671
"""Re-read any data needed to synchronise with disk.
1673
This method is intended to be called after another repository instance
1674
(such as one used by a smart server) has inserted data into the
1675
repository. On all repositories this will work outside of write groups.
1676
Some repository formats (pack and newer for bzrlib native formats)
1677
support refresh_data inside write groups. If called inside a write
1678
group on a repository that does not support refreshing in a write group
1679
IsInWriteGroupError will be raised.
1681
self._refresh_data()
1683
def resume_write_group(self, tokens):
1684
if not self.is_write_locked():
1685
raise errors.NotWriteLocked(self)
1686
if self._write_group:
1687
raise errors.BzrError('already in a write group')
1688
self._resume_write_group(tokens)
1689
# so we can detect unlock/relock - the write group is now entered.
1690
self._write_group = self.get_transaction()
1692
def _resume_write_group(self, tokens):
1693
raise errors.UnsuspendableWriteGroup(self)
1695
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False,
843
def fetch(self, source, revision_id=None, pb=None):
1697
844
"""Fetch the content required to construct revision_id from source.
1699
If revision_id is None and fetch_spec is None, then all content is
1702
fetch() may not be used when the repository is in a write group -
1703
either finish the current write group before using fetch, or use
1704
fetch before starting the write group.
1706
:param find_ghosts: Find and copy revisions in the source that are
1707
ghosts in the target (and not reachable directly by walking out to
1708
the first-present revision in target from revision_id).
1709
:param revision_id: If specified, all the content needed for this
1710
revision ID will be copied to the target. Fetch will determine for
1711
itself which content needs to be copied.
1712
:param fetch_spec: If specified, a SearchResult or
1713
PendingAncestryResult that describes which revisions to copy. This
1714
allows copying multiple heads at once. Mutually exclusive with
846
If revision_id is None all content is copied.
1717
if fetch_spec is not None and revision_id is not None:
1718
raise AssertionError(
1719
"fetch_spec and revision_id are mutually exclusive.")
1720
if self.is_in_write_group():
1721
raise errors.InternalBzrError(
1722
"May not fetch while in a write group.")
1723
848
# fast path same-url fetch operations
1724
# TODO: lift out to somewhere common with RemoteRepository
1725
# <https://bugs.edge.launchpad.net/bzr/+bug/401646>
1726
if (self.has_same_location(source)
1727
and fetch_spec is None
1728
and self._has_same_fallbacks(source)):
849
if self.has_same_location(source):
1729
850
# check that last_revision is in 'from' and then return a
1731
852
if (revision_id is not None and
1732
853
not _mod_revision.is_null(revision_id)):
1733
854
self.get_revision(revision_id)
1735
# if there is no specific appropriate InterRepository, this will get
1736
# the InterRepository base class, which raises an
1737
# IncompatibleRepositories when asked to fetch.
1738
856
inter = InterRepository.get(source, self)
1739
return inter.fetch(revision_id=revision_id, pb=pb,
1740
find_ghosts=find_ghosts, fetch_spec=fetch_spec)
858
return inter.fetch(revision_id=revision_id, pb=pb)
859
except NotImplementedError:
860
raise errors.IncompatibleRepositories(source, self)
1742
862
def create_bundle(self, target, base, fileobj, format=None):
1743
863
return serializer.write_bundle(self, target, base, fileobj, format)
1894
983
@needs_read_lock
1895
984
def get_revisions(self, revision_ids):
1896
"""Get many revisions at once.
1898
Repositories that need to check data on every revision read should
1899
subclass this method.
985
"""Get many revisions at once."""
1901
986
return self._get_revisions(revision_ids)
1903
988
@needs_read_lock
1904
989
def _get_revisions(self, revision_ids):
1905
990
"""Core work logic to get many revisions without sanity checks."""
1907
for revid, rev in self._iter_revisions(revision_ids):
1909
raise errors.NoSuchRevision(self, revid)
1911
return [revs[revid] for revid in revision_ids]
1913
def _iter_revisions(self, revision_ids):
1914
"""Iterate over revision objects.
1916
:param revision_ids: An iterable of revisions to examine. None may be
1917
passed to request all revisions known to the repository. Note that
1918
not all repositories can find unreferenced revisions; for those
1919
repositories only referenced ones will be returned.
1920
:return: An iterator of (revid, revision) tuples. Absent revisions (
1921
those asked for but not available) are returned as (revid, None).
1923
if revision_ids is None:
1924
revision_ids = self.all_revision_ids()
1926
for rev_id in revision_ids:
1927
if not rev_id or not isinstance(rev_id, basestring):
1928
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1929
keys = [(key,) for key in revision_ids]
1930
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1931
for record in stream:
1932
revid = record.key[0]
1933
if record.storage_kind == 'absent':
1936
text = record.get_bytes_as('fulltext')
1937
rev = self._serializer.read_revision_from_string(text)
1940
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
991
for rev_id in revision_ids:
992
if not rev_id or not isinstance(rev_id, basestring):
993
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
994
revs = self._revision_store.get_revisions(revision_ids,
995
self.get_transaction())
997
assert not isinstance(rev.revision_id, unicode)
998
for parent_id in rev.parent_ids:
999
assert not isinstance(parent_id, unicode)
1003
def get_revision_xml(self, revision_id):
1004
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1005
# would have already do it.
1006
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1007
rev = self.get_revision(revision_id)
1008
rev_tmp = StringIO()
1009
# the current serializer..
1010
self._revision_store._serializer.write_revision(rev, rev_tmp)
1012
return rev_tmp.getvalue()
1015
def get_deltas_for_revisions(self, revisions):
1941
1016
"""Produce a generator of revision deltas.
1943
1018
Note that the input is a sequence of REVISIONS, not revision_ids.
1944
1019
Trees will be held in memory until the generator exits.
1945
1020
Each delta is relative to the revision's lefthand predecessor.
1947
:param specific_fileids: if not None, the result is filtered
1948
so that only those file-ids, their parents and their
1949
children are included.
1951
# Get the revision-ids of interest
1952
1022
required_trees = set()
1953
1023
for revision in revisions:
1954
1024
required_trees.add(revision.revision_id)
1955
1025
required_trees.update(revision.parent_ids[:1])
1957
# Get the matching filtered trees. Note that it's more
1958
# efficient to pass filtered trees to changes_from() rather
1959
# than doing the filtering afterwards. changes_from() could
1960
# arguably do the filtering itself but it's path-based, not
1961
# file-id based, so filtering before or afterwards is
1963
if specific_fileids is None:
1964
trees = dict((t.get_revision_id(), t) for
1965
t in self.revision_trees(required_trees))
1967
trees = dict((t.get_revision_id(), t) for
1968
t in self._filtered_revision_trees(required_trees,
1971
# Calculate the deltas
1026
trees = dict((t.get_revision_id(), t) for
1027
t in self.revision_trees(required_trees))
1972
1028
for revision in revisions:
1973
1029
if not revision.parent_ids:
1974
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
1030
old_tree = self.revision_tree(None)
1976
1032
old_tree = trees[revision.parent_ids[0]]
1977
1033
yield trees[revision.revision_id].changes_from(old_tree)
1979
1035
@needs_read_lock
1980
def get_revision_delta(self, revision_id, specific_fileids=None):
1036
def get_revision_delta(self, revision_id):
1981
1037
"""Return the delta for one revision.
1983
1039
The delta is relative to the left-hand predecessor of the
1986
:param specific_fileids: if not None, the result is filtered
1987
so that only those file-ids, their parents and their
1988
children are included.
1990
1042
r = self.get_revision(revision_id)
1991
return list(self.get_deltas_for_revisions([r],
1992
specific_fileids=specific_fileids))[0]
1043
return list(self.get_deltas_for_revisions([r]))[0]
1994
1045
@needs_write_lock
1995
1046
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1996
1047
signature = gpg_strategy.sign(plaintext)
1997
self.add_signature_text(revision_id, signature)
2000
def add_signature_text(self, revision_id, signature):
2001
self.signatures.add_lines((revision_id,), (),
2002
osutils.split_lines(signature))
2004
def find_text_key_references(self):
2005
"""Find the text key references within the repository.
2007
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
2008
to whether they were referred to by the inventory of the
2009
revision_id that they contain. The inventory texts from all present
2010
revision ids are assessed to generate this report.
2012
revision_keys = self.revisions.keys()
2013
w = self.inventories
2014
pb = ui.ui_factory.nested_progress_bar()
2016
return self._find_text_key_references_from_xml_inventory_lines(
2017
w.iter_lines_added_or_present_in_keys(revision_keys, pb=pb))
2021
def _find_text_key_references_from_xml_inventory_lines(self,
2023
"""Core routine for extracting references to texts from inventories.
1048
self._revision_store.add_revision_signature_text(revision_id,
1050
self.get_transaction())
1052
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
1054
"""Helper routine for fileids_altered_by_revision_ids.
2025
1056
This performs the translation of xml lines to revision ids.
2027
:param line_iterator: An iterator of lines, origin_version_id
2028
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
2029
to whether they were referred to by the inventory of the
2030
revision_id that they contain. Note that if that revision_id was
2031
not part of the line_iterator's output then False will be given -
2032
even though it may actually refer to that key.
1058
:param line_iterator: An iterator of lines
1059
:param revision_ids: The revision ids to filter for.
1060
:return: a dictionary mapping altered file-ids to an iterable of
1061
revision_ids. Each altered file-ids has the exact revision_ids that
1062
altered it listed explicitly.
2034
if not self._serializer.support_altered_by_hack:
2035
raise AssertionError(
2036
"_find_text_key_references_from_xml_inventory_lines only "
2037
"supported for branches which store inventory as unnested xml"
2038
", not on %r" % self)
2041
1066
# this code needs to read every new line in every inventory for the
2042
1067
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
2043
# not present in one of those inventories is unnecessary but not
1068
# not present in one of those inventories is unnecessary but not
2044
1069
# harmful because we are filtering by the revision id marker in the
2045
# inventory lines : we only select file ids altered in one of those
1070
# inventory lines : we only select file ids altered in one of those
2046
1071
# revisions. We don't need to see all lines in the inventory because
2047
1072
# only those added in an inventory in rev X can contain a revision=X
2334
1176
versions). knit-kind is one of 'file', 'inventory', 'signatures',
2335
1177
'revisions'. file-id is None unless knit-kind is 'file'.
2337
for result in self._find_file_keys_to_fetch(revision_ids, _files_pb):
2340
for result in self._find_non_file_keys_to_fetch(revision_ids):
2343
def _find_file_keys_to_fetch(self, revision_ids, pb):
2344
1179
# XXX: it's a bit weird to control the inventory weave caching in this
2345
1180
# generator. Ideally the caching would be done in fetch.py I think. Or
2346
1181
# maybe this generator should explicitly have the contract that it
2347
1182
# should not be iterated until the previously yielded item has been
2349
inv_w = self.inventories
1185
inv_w = self.get_inventory_weave()
1186
inv_w.enable_cache()
2351
1188
# file ids that changed
2352
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
1189
file_ids = self.fileids_altered_by_revision_ids(revision_ids)
2354
1191
num_file_ids = len(file_ids)
2355
1192
for file_id, altered_versions in file_ids.iteritems():
2357
pb.update("Fetch texts", count, num_file_ids)
1193
if _files_pb is not None:
1194
_files_pb.update("fetch texts", count, num_file_ids)
2359
1196
yield ("file", file_id, altered_versions)
1197
# We're done with the files_pb. Note that it finished by the caller,
1198
# just as it was created by the caller.
2361
def _find_non_file_keys_to_fetch(self, revision_ids):
2363
1202
yield ("inventory", None, revision_ids)
2366
# XXX: Note ATM no callers actually pay attention to this return
2367
# instead they just use the list of revision ids and ignore
2368
# missing sigs. Consider removing this work entirely
2369
revisions_with_signatures = set(self.signatures.get_parent_map(
2370
[(r,) for r in revision_ids]))
2371
revisions_with_signatures = set(
2372
[r for (r,) in revisions_with_signatures])
2373
revisions_with_signatures.intersection_update(revision_ids)
1206
revisions_with_signatures = set()
1207
for rev_id in revision_ids:
1209
self.get_signature_text(rev_id)
1210
except errors.NoSuchRevision:
1214
revisions_with_signatures.add(rev_id)
2374
1216
yield ("signatures", None, revisions_with_signatures)
2377
1219
yield ("revisions", None, revision_ids)
2379
1221
@needs_read_lock
1222
def get_inventory_weave(self):
1223
return self.control_weaves.get_weave('inventory',
1224
self.get_transaction())
2380
1227
def get_inventory(self, revision_id):
2381
"""Get Inventory object by revision id."""
2382
return self.iter_inventories([revision_id]).next()
2384
def iter_inventories(self, revision_ids, ordering=None):
2385
"""Get many inventories by revision_ids.
2387
This will buffer some or all of the texts used in constructing the
2388
inventories in memory, but will only parse a single inventory at a
2391
:param revision_ids: The expected revision ids of the inventories.
2392
:param ordering: optional ordering, e.g. 'topological'. If not
2393
specified, the order of revision_ids will be preserved (by
2394
buffering if necessary).
2395
:return: An iterator of inventories.
2397
if ((None in revision_ids)
2398
or (_mod_revision.NULL_REVISION in revision_ids)):
2399
raise ValueError('cannot get null revision inventory')
2400
return self._iter_inventories(revision_ids, ordering)
2402
def _iter_inventories(self, revision_ids, ordering):
2403
"""single-document based inventory iteration."""
2404
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2405
for text, revision_id in inv_xmls:
2406
yield self._deserialise_inventory(revision_id, text)
2408
def _iter_inventory_xmls(self, revision_ids, ordering):
2409
if ordering is None:
2410
order_as_requested = True
2411
ordering = 'unordered'
2413
order_as_requested = False
2414
keys = [(revision_id,) for revision_id in revision_ids]
2417
if order_as_requested:
2418
key_iter = iter(keys)
2419
next_key = key_iter.next()
2420
stream = self.inventories.get_record_stream(keys, ordering, True)
2422
for record in stream:
2423
if record.storage_kind != 'absent':
2424
chunks = record.get_bytes_as('chunked')
2425
if order_as_requested:
2426
text_chunks[record.key] = chunks
2428
yield ''.join(chunks), record.key[-1]
2430
raise errors.NoSuchRevision(self, record.key)
2431
if order_as_requested:
2432
# Yield as many results as we can while preserving order.
2433
while next_key in text_chunks:
2434
chunks = text_chunks.pop(next_key)
2435
yield ''.join(chunks), next_key[-1]
2437
next_key = key_iter.next()
2438
except StopIteration:
2439
# We still want to fully consume the get_record_stream,
2440
# just in case it is not actually finished at this point
2444
def _deserialise_inventory(self, revision_id, xml):
2445
"""Transform the xml into an inventory object.
1228
"""Get Inventory object by hash."""
1229
return self.deserialise_inventory(
1230
revision_id, self.get_inventory_xml(revision_id))
1232
def deserialise_inventory(self, revision_id, xml):
1233
"""Transform the xml into an inventory object.
2447
1235
:param revision_id: The expected revision id of the inventory.
2448
1236
:param xml: A serialised inventory.
2450
result = self._serializer.read_inventory_from_string(xml, revision_id,
2451
entry_cache=self._inventory_entry_cache,
2452
return_from_cache=self._safe_to_return_from_cache)
2453
if result.revision_id != revision_id:
2454
raise AssertionError('revision id mismatch %s != %s' % (
2455
result.revision_id, revision_id))
1238
return self._serializer.read_inventory_from_string(xml, revision_id)
1240
def serialise_inventory(self, inv):
1241
return self._serializer.write_inventory_to_string(inv)
1243
def _serialise_inventory_to_lines(self, inv):
1244
return self._serializer.write_inventory_to_lines(inv)
2458
1246
def get_serializer_format(self):
2459
1247
return self._serializer.format_num
2461
1249
@needs_read_lock
2462
def _get_inventory_xml(self, revision_id):
2463
"""Get serialized inventory as a string."""
2464
texts = self._iter_inventory_xmls([revision_id], 'unordered')
1250
def get_inventory_xml(self, revision_id):
1251
"""Get inventory XML as a file object."""
2466
text, revision_id = texts.next()
2467
except StopIteration:
1253
assert isinstance(revision_id, str), type(revision_id)
1254
iw = self.get_inventory_weave()
1255
return iw.get_text(revision_id)
2468
1257
raise errors.HistoryMissing(self, 'inventory', revision_id)
2471
def get_rev_id_for_revno(self, revno, known_pair):
2472
"""Return the revision id of a revno, given a later (revno, revid)
2473
pair in the same history.
2475
:return: if found (True, revid). If the available history ran out
2476
before reaching the revno, then this returns
2477
(False, (closest_revno, closest_revid)).
2479
known_revno, known_revid = known_pair
2480
partial_history = [known_revid]
2481
distance_from_known = known_revno - revno
2482
if distance_from_known < 0:
2484
'requested revno (%d) is later than given known revno (%d)'
2485
% (revno, known_revno))
2488
self, partial_history, stop_index=distance_from_known)
2489
except errors.RevisionNotPresent, err:
2490
if err.revision_id == known_revid:
2491
# The start revision (known_revid) wasn't found.
2493
# This is a stacked repository with no fallbacks, or a there's a
2494
# left-hand ghost. Either way, even though the revision named in
2495
# the error isn't in this repo, we know it's the next step in this
2496
# left-hand history.
2497
partial_history.append(err.revision_id)
2498
if len(partial_history) <= distance_from_known:
2499
# Didn't find enough history to get a revid for the revno.
2500
earliest_revno = known_revno - len(partial_history) + 1
2501
return (False, (earliest_revno, partial_history[-1]))
2502
if len(partial_history) - 1 > distance_from_known:
2503
raise AssertionError('_iter_for_revno returned too much history')
2504
return (True, partial_history[-1])
1260
def get_inventory_sha1(self, revision_id):
1261
"""Return the sha1 hash of the inventory entry
1263
return self.get_revision(revision_id).inventory_sha1
1266
def get_revision_graph(self, revision_id=None):
1267
"""Return a dictionary containing the revision graph.
1269
NB: This method should not be used as it accesses the entire graph all
1270
at once, which is much more data than most operations should require.
1272
:param revision_id: The revision_id to get a graph from. If None, then
1273
the entire revision graph is returned. This is a deprecated mode of
1274
operation and will be removed in the future.
1275
:return: a dictionary of revision_id->revision_parents_list.
1277
raise NotImplementedError(self.get_revision_graph)
1280
def get_revision_graph_with_ghosts(self, revision_ids=None):
1281
"""Return a graph of the revisions with ghosts marked as applicable.
1283
:param revision_ids: an iterable of revisions to graph or None for all.
1284
:return: a Graph object with the graph reachable from revision_ids.
1286
if 'evil' in debug.debug_flags:
1288
"get_revision_graph_with_ghosts scales with size of history.")
1289
result = deprecated_graph.Graph()
1290
if not revision_ids:
1291
pending = set(self.all_revision_ids())
1294
pending = set(revision_ids)
1295
# special case NULL_REVISION
1296
if _mod_revision.NULL_REVISION in pending:
1297
pending.remove(_mod_revision.NULL_REVISION)
1298
required = set(pending)
1301
revision_id = pending.pop()
1303
rev = self.get_revision(revision_id)
1304
except errors.NoSuchRevision:
1305
if revision_id in required:
1308
result.add_ghost(revision_id)
1310
for parent_id in rev.parent_ids:
1311
# is this queued or done ?
1312
if (parent_id not in pending and
1313
parent_id not in done):
1315
pending.add(parent_id)
1316
result.add_node(revision_id, rev.parent_ids)
1317
done.add(revision_id)
1320
def _get_history_vf(self):
1321
"""Get a versionedfile whose history graph reflects all revisions.
1323
For weave repositories, this is the inventory weave.
1325
return self.get_inventory_weave()
2506
1327
def iter_reverse_revision_history(self, revision_id):
2507
1328
"""Iterate backwards through revision ids in the lefthand history
2543
1378
for repositories to maintain loaded indices across multiple locks
2544
1379
by checking inside their implementation of this method to see
2545
1380
whether their indices are still valid. This depends of course on
2546
the disk format being validatable in this manner. This method is
2547
also called by the refresh_data() public interface to cause a refresh
2548
to occur while in a write lock so that data inserted by a smart server
2549
push operation is visible on the client's instance of the physical
1381
the disk format being validatable in this manner.
2553
1384
@needs_read_lock
2554
1385
def revision_tree(self, revision_id):
2555
1386
"""Return Tree for a revision on this branch.
2557
`revision_id` may be NULL_REVISION for the empty tree revision.
1388
`revision_id` may be None for the empty tree revision.
2559
revision_id = _mod_revision.ensure_null(revision_id)
2560
1390
# TODO: refactor this to use an existing revision object
2561
1391
# so we don't need to read it in twice.
2562
if revision_id == _mod_revision.NULL_REVISION:
2563
return RevisionTree(self, Inventory(root_id=None),
1392
if revision_id is None or revision_id == _mod_revision.NULL_REVISION:
1393
return RevisionTree(self, Inventory(root_id=None),
2564
1394
_mod_revision.NULL_REVISION)
2566
inv = self.get_inventory(revision_id)
1396
inv = self.get_revision_inventory(revision_id)
2567
1397
return RevisionTree(self, inv, revision_id)
2569
1400
def revision_trees(self, revision_ids):
2570
"""Return Trees for revisions in this repository.
2572
:param revision_ids: a sequence of revision-ids;
2573
a revision-id may not be None or 'null:'
2575
inventories = self.iter_inventories(revision_ids)
2576
for inv in inventories:
2577
yield RevisionTree(self, inv, inv.revision_id)
2579
def _filtered_revision_trees(self, revision_ids, file_ids):
2580
"""Return Tree for a revision on this branch with only some files.
2582
:param revision_ids: a sequence of revision-ids;
2583
a revision-id may not be None or 'null:'
2584
:param file_ids: if not None, the result is filtered
2585
so that only those file-ids, their parents and their
2586
children are included.
2588
inventories = self.iter_inventories(revision_ids)
2589
for inv in inventories:
2590
# Should we introduce a FilteredRevisionTree class rather
2591
# than pre-filter the inventory here?
2592
filtered_inv = inv.filter(file_ids)
2593
yield RevisionTree(self, filtered_inv, filtered_inv.revision_id)
1401
"""Return Tree for a revision on this branch.
1403
`revision_id` may not be None or 'null:'"""
1404
assert None not in revision_ids
1405
assert _mod_revision.NULL_REVISION not in revision_ids
1406
texts = self.get_inventory_weave().get_texts(revision_ids)
1407
for text, revision_id in zip(texts, revision_ids):
1408
inv = self.deserialise_inventory(revision_id, text)
1409
yield RevisionTree(self, inv, revision_id)
2595
1411
@needs_read_lock
2596
1412
def get_ancestry(self, revision_id, topo_sorted=True):
2597
1413
"""Return a list of revision-ids integrated by a revision.
2599
The first element of the list is always None, indicating the origin
2600
revision. This might change when we have history horizons, or
1415
The first element of the list is always None, indicating the origin
1416
revision. This might change when we have history horizons, or
2601
1417
perhaps we should have a new API.
2603
1419
This is topologically sorted.
2605
1421
if _mod_revision.is_null(revision_id):
2607
1423
if not self.has_revision(revision_id):
2608
1424
raise errors.NoSuchRevision(self, revision_id)
2609
graph = self.get_graph()
2611
search = graph._make_breadth_first_searcher([revision_id])
2614
found, ghosts = search.next_with_ghosts()
2615
except StopIteration:
2618
if _mod_revision.NULL_REVISION in keys:
2619
keys.remove(_mod_revision.NULL_REVISION)
2621
parent_map = graph.get_parent_map(keys)
2622
keys = tsort.topo_sort(parent_map)
2623
return [None] + list(keys)
1425
w = self.get_inventory_weave()
1426
candidates = w.get_ancestry(revision_id, topo_sorted)
1427
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
2625
def pack(self, hint=None, clean_obsolete_packs=False):
2626
1430
"""Compress the data within the repository.
2628
1432
This operation only makes sense for some repository types. For other
2629
1433
types it should be a no-op that just returns.
2631
1435
This stub method does not require a lock, but subclasses should use
2632
@needs_write_lock as this is a long running call its reasonable to
1436
@needs_write_lock as this is a long running call its reasonable to
2633
1437
implicitly lock for the user.
2635
:param hint: If not supplied, the whole repository is packed.
2636
If supplied, the repository may use the hint parameter as a
2637
hint for the parts of the repository to pack. A hint can be
2638
obtained from the result of commit_write_group(). Out of
2639
date hints are simply ignored, because concurrent operations
2640
can obsolete them rapidly.
2642
:param clean_obsolete_packs: Clean obsolete packs immediately after
1441
def print_file(self, file, revision_id):
1442
"""Print `file` to stdout.
1444
FIXME RBC 20060125 as John Meinel points out this is a bad api
1445
- it writes to stdout, it assumes that that is valid etc. Fix
1446
by creating a new more flexible convenience function.
1448
tree = self.revision_tree(revision_id)
1449
# use inventory as it was in that revision
1450
file_id = tree.inventory.path2id(file)
1452
# TODO: jam 20060427 Write a test for this code path
1453
# it had a bug in it, and was raising the wrong
1455
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
1456
tree.print_file(file_id)
2646
1458
def get_transaction(self):
2647
1459
return self.control_files.get_transaction()
2649
def get_parent_map(self, revision_ids):
2650
"""See graph.StackedParentsProvider.get_parent_map"""
2651
# revisions index works in keys; this just works in revisions
2652
# therefore wrap and unwrap
1461
def revision_parents(self, revision_id):
1462
return self.get_inventory_weave().parent_names(revision_id)
1464
def get_parents(self, revision_ids):
1465
"""See StackedParentsProvider.get_parents"""
2655
1467
for revision_id in revision_ids:
2656
1468
if revision_id == _mod_revision.NULL_REVISION:
2657
result[revision_id] = ()
2658
elif revision_id is None:
2659
raise ValueError('get_parent_map(None) is not valid')
2661
query_keys.append((revision_id ,))
2662
for ((revision_id,), parent_keys) in \
2663
self.revisions.get_parent_map(query_keys).iteritems():
2665
result[revision_id] = tuple([parent_revid
2666
for (parent_revid,) in parent_keys])
2668
result[revision_id] = (_mod_revision.NULL_REVISION,)
1472
parents = self.get_revision(revision_id).parent_ids
1473
except errors.NoSuchRevision:
1476
if len(parents) == 0:
1477
parents = [_mod_revision.NULL_REVISION]
1478
parents_list.append(parents)
2671
1481
def _make_parents_provider(self):
2675
def get_known_graph_ancestry(self, revision_ids):
2676
"""Return the known graph for a set of revision ids and their ancestors.
2678
st = static_tuple.StaticTuple
2679
revision_keys = [st(r_id).intern() for r_id in revision_ids]
2680
known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
2681
return graph.GraphThunkIdsToKeys(known_graph)
2683
1484
def get_graph(self, other_repository=None):
2684
1485
"""Return the graph walker for this repository format"""
2685
1486
parents_provider = self._make_parents_provider()
2686
1487
if (other_repository is not None and
2687
not self.has_same_location(other_repository)):
2688
parents_provider = graph.StackedParentsProvider(
1488
other_repository.bzrdir.transport.base !=
1489
self.bzrdir.transport.base):
1490
parents_provider = graph._StackedParentsProvider(
2689
1491
[parents_provider, other_repository._make_parents_provider()])
2690
1492
return graph.Graph(parents_provider)
2692
def _get_versioned_file_checker(self, text_key_references=None,
2694
"""Return an object suitable for checking versioned files.
2696
:param text_key_references: if non-None, an already built
2697
dictionary mapping text keys ((fileid, revision_id) tuples)
2698
to whether they were referred to by the inventory of the
2699
revision_id that they contain. If None, this will be
2701
:param ancestors: Optional result from
2702
self.get_graph().get_parent_map(self.all_revision_ids()) if already
2705
return _VersionedFileChecker(self,
2706
text_key_references=text_key_references, ancestors=ancestors)
2708
def revision_ids_to_search_result(self, result_set):
2709
"""Convert a set of revision ids to a graph SearchResult."""
2710
result_parents = set()
2711
for parents in self.get_graph().get_parent_map(
2712
result_set).itervalues():
2713
result_parents.update(parents)
2714
included_keys = result_set.intersection(result_parents)
2715
start_keys = result_set.difference(included_keys)
2716
exclude_keys = result_parents.difference(result_set)
2717
result = graph.SearchResult(start_keys, exclude_keys,
2718
len(result_set), result_set)
1494
def get_versioned_file_checker(self, revisions, revision_versions_cache):
1495
return VersionedFileChecker(revisions, revision_versions_cache, self)
2721
1497
@needs_write_lock
2722
1498
def set_make_working_trees(self, new_value):
3402
1995
InterRepository.get(other).method_name(parameters).
3405
_walk_to_common_revisions_batch_size = 50
3406
1998
_optimisers = []
3407
1999
"""The available optimised InterRepository types."""
3410
2001
def copy_content(self, revision_id=None):
3411
"""Make a complete copy of the content in self into destination.
3413
This is a destructive operation! Do not use it on existing
3416
:param revision_id: Only copy the content needed to construct
3417
revision_id and its parents.
3420
self.target.set_make_working_trees(self.source.make_working_trees())
3421
except NotImplementedError:
3423
self.target.fetch(self.source, revision_id=revision_id)
3426
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
2002
raise NotImplementedError(self.copy_content)
2004
def fetch(self, revision_id=None, pb=None):
3428
2005
"""Fetch the content required to construct revision_id.
3430
2007
The content is copied from self.source to self.target.
3432
2009
:param revision_id: if None all content is copied, if NULL_REVISION no
3433
2010
content is copied.
3437
ui.ui_factory.warn_experimental_format_fetch(self)
3438
from bzrlib.fetch import RepoFetcher
3439
# See <https://launchpad.net/bugs/456077> asking for a warning here
3440
if self.source._format.network_name() != self.target._format.network_name():
3441
ui.ui_factory.show_user_warning('cross_format_fetch',
3442
from_format=self.source._format,
3443
to_format=self.target._format)
3444
f = RepoFetcher(to_repository=self.target,
3445
from_repository=self.source,
3446
last_revision=revision_id,
3447
fetch_spec=fetch_spec,
3448
find_ghosts=find_ghosts)
3450
def _walk_to_common_revisions(self, revision_ids):
3451
"""Walk out from revision_ids in source to revisions target has.
3453
:param revision_ids: The start point for the search.
3454
:return: A set of revision ids.
3456
target_graph = self.target.get_graph()
3457
revision_ids = frozenset(revision_ids)
3458
missing_revs = set()
3459
source_graph = self.source.get_graph()
3460
# ensure we don't pay silly lookup costs.
3461
searcher = source_graph._make_breadth_first_searcher(revision_ids)
3462
null_set = frozenset([_mod_revision.NULL_REVISION])
3463
searcher_exhausted = False
3467
# Iterate the searcher until we have enough next_revs
3468
while len(next_revs) < self._walk_to_common_revisions_batch_size:
3470
next_revs_part, ghosts_part = searcher.next_with_ghosts()
3471
next_revs.update(next_revs_part)
3472
ghosts.update(ghosts_part)
3473
except StopIteration:
3474
searcher_exhausted = True
3476
# If there are ghosts in the source graph, and the caller asked for
3477
# them, make sure that they are present in the target.
3478
# We don't care about other ghosts as we can't fetch them and
3479
# haven't been asked to.
3480
ghosts_to_check = set(revision_ids.intersection(ghosts))
3481
revs_to_get = set(next_revs).union(ghosts_to_check)
3483
have_revs = set(target_graph.get_parent_map(revs_to_get))
3484
# we always have NULL_REVISION present.
3485
have_revs = have_revs.union(null_set)
3486
# Check if the target is missing any ghosts we need.
3487
ghosts_to_check.difference_update(have_revs)
3489
# One of the caller's revision_ids is a ghost in both the
3490
# source and the target.
3491
raise errors.NoSuchRevision(
3492
self.source, ghosts_to_check.pop())
3493
missing_revs.update(next_revs - have_revs)
3494
# Because we may have walked past the original stop point, make
3495
# sure everything is stopped
3496
stop_revs = searcher.find_seen_ancestors(have_revs)
3497
searcher.stop_searching_any(stop_revs)
3498
if searcher_exhausted:
3500
return searcher.get_result()
2011
:param pb: optional progress bar to use for progress reports. If not
2012
provided a default one will be created.
2014
Returns the copied revision count and the failed revisions in a tuple:
2017
raise NotImplementedError(self.fetch)
3502
2019
@needs_read_lock
3503
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
2020
def missing_revision_ids(self, revision_id=None):
3504
2021
"""Return the revision ids that source has that target does not.
2023
These are returned in topological order.
3506
2025
:param revision_id: only return revision ids included by this
3508
:param find_ghosts: If True find missing revisions in deep history
3509
rather than just finding the surface difference.
3510
:return: A bzrlib.graph.SearchResult.
3512
# stop searching at found target revisions.
3513
if not find_ghosts and revision_id is not None:
3514
return self._walk_to_common_revisions([revision_id])
3515
2028
# generic, possibly worst case, slow code path.
3516
2029
target_ids = set(self.target.all_revision_ids())
3517
2030
if revision_id is not None:
3518
2031
source_ids = self.source.get_ancestry(revision_id)
3519
if source_ids[0] is not None:
3520
raise AssertionError()
2032
assert source_ids[0] is None
3521
2033
source_ids.pop(0)
3523
2035
source_ids = self.source.all_revision_ids()
3524
2036
result_set = set(source_ids).difference(target_ids)
3525
return self.source.revision_ids_to_search_result(result_set)
2037
# this may look like a no-op: its not. It preserves the ordering
2038
# other_ids had while only returning the members from other_ids
2039
# that we've decided we need.
2040
return [rev_id for rev_id in source_ids if rev_id in result_set]
3528
2043
def _same_model(source, target):
3529
"""True if source and target have the same data representation.
3531
Note: this is always called on the base class; overriding it in a
3532
subclass will have no effect.
3535
InterRepository._assert_same_model(source, target)
3537
except errors.IncompatibleRepositories, e:
3541
def _assert_same_model(source, target):
3542
"""Raise an exception if two repositories do not use the same model.
2044
"""True if source and target have the same data representation."""
3544
2045
if source.supports_rich_root() != target.supports_rich_root():
3545
raise errors.IncompatibleRepositories(source, target,
3546
"different rich-root support")
3547
2047
if source._serializer != target._serializer:
3548
raise errors.IncompatibleRepositories(source, target,
3549
"different serializers")
3552
2052
class InterSameDataRepository(InterRepository):
3553
2053
"""Code for converting between repositories that represent the same data.
3555
2055
Data format and model must match for this to work.
3559
2059
def _get_repo_format_to_test(self):
3560
2060
"""Repository format for testing with.
3562
2062
InterSameData can pull from subtree to subtree and from non-subtree to
3563
2063
non-subtree, so we test this with the richest repository format.
3723
2277
# we do not have a revision as that would be pointless.
3724
2278
target_ids = set(self.target.all_revision_ids())
3725
2279
possibly_present_revisions = target_ids.intersection(source_ids_set)
3726
actually_present_revisions = set(
3727
self.target._eliminate_revisions_not_present(possibly_present_revisions))
2280
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3728
2281
required_revisions = source_ids_set.difference(actually_present_revisions)
2282
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3729
2283
if revision_id is not None:
3730
2284
# we used get_ancestry to determine source_ids then we are assured all
3731
2285
# revisions referenced are present as they are installed in topological order.
3732
2286
# and the tip revision was validated by get_ancestry.
3733
result_set = required_revisions
2287
return required_topo_revisions
3735
# if we just grabbed the possibly available ids, then
2289
# if we just grabbed the possibly available ids, then
3736
2290
# we only have an estimate of whats available and need to validate
3737
2291
# that against the revision records.
3739
self.source._eliminate_revisions_not_present(required_revisions))
3740
return self.source.revision_ids_to_search_result(result_set)
3743
class InterDifferingSerializer(InterRepository):
2292
return self.source._eliminate_revisions_not_present(required_topo_revisions)
2295
class InterPackRepo(InterSameDataRepository):
2296
"""Optimised code paths between Pack based repositories."""
3746
2299
def _get_repo_format_to_test(self):
2300
from bzrlib.repofmt import pack_repo
2301
return pack_repo.RepositoryFormatKnitPack1()
3750
2304
def is_compatible(source, target):
3751
"""Be compatible with Knit2 source and Knit3 target"""
3752
# This is redundant with format.check_conversion_target(), however that
3753
# raises an exception, and we just want to say "False" as in we won't
3754
# support converting between these formats.
3755
if 'IDS_never' in debug.debug_flags:
3757
if source.supports_rich_root() and not target.supports_rich_root():
3759
if (source._format.supports_tree_reference
3760
and not target._format.supports_tree_reference):
3762
if target._fallback_repositories and target._format.supports_chks:
3763
# IDS doesn't know how to copy CHKs for the parent inventories it
3764
# adds to stacked repos.
3766
if 'IDS_always' in debug.debug_flags:
3768
# Only use this code path for local source and target. IDS does far
3769
# too much IO (both bandwidth and roundtrips) over a network.
3770
if not source.bzrdir.transport.base.startswith('file:///'):
3772
if not target.bzrdir.transport.base.startswith('file:///'):
3776
def _get_trees(self, revision_ids, cache):
3778
for rev_id in revision_ids:
3780
possible_trees.append((rev_id, cache[rev_id]))
3782
# Not cached, but inventory might be present anyway.
3784
tree = self.source.revision_tree(rev_id)
3785
except errors.NoSuchRevision:
3786
# Nope, parent is ghost.
3789
cache[rev_id] = tree
3790
possible_trees.append((rev_id, tree))
3791
return possible_trees
3793
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3794
"""Get the best delta and base for this revision.
3796
:return: (basis_id, delta)
3799
# Generate deltas against each tree, to find the shortest.
3800
texts_possibly_new_in_tree = set()
3801
for basis_id, basis_tree in possible_trees:
3802
delta = tree.inventory._make_delta(basis_tree.inventory)
3803
for old_path, new_path, file_id, new_entry in delta:
3804
if new_path is None:
3805
# This file_id isn't present in the new rev, so we don't
3809
# Rich roots are handled elsewhere...
3811
kind = new_entry.kind
3812
if kind != 'directory' and kind != 'file':
3813
# No text record associated with this inventory entry.
3815
# This is a directory or file that has changed somehow.
3816
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3817
deltas.append((len(delta), basis_id, delta))
3819
return deltas[0][1:]
3821
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3822
"""Find all parent revisions that are absent, but for which the
3823
inventory is present, and copy those inventories.
3825
This is necessary to preserve correctness when the source is stacked
3826
without fallbacks configured. (Note that in cases like upgrade the
3827
source may be not have _fallback_repositories even though it is
3831
for parents in parent_map.values():
3832
parent_revs.update(parents)
3833
present_parents = self.source.get_parent_map(parent_revs)
3834
absent_parents = set(parent_revs).difference(present_parents)
3835
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3836
(rev_id,) for rev_id in absent_parents)
3837
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3838
for parent_tree in self.source.revision_trees(parent_inv_ids):
3839
current_revision_id = parent_tree.get_revision_id()
3840
parents_parents_keys = parent_invs_keys_for_stacking[
3841
(current_revision_id,)]
3842
parents_parents = [key[-1] for key in parents_parents_keys]
3843
basis_id = _mod_revision.NULL_REVISION
3844
basis_tree = self.source.revision_tree(basis_id)
3845
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3846
self.target.add_inventory_by_delta(
3847
basis_id, delta, current_revision_id, parents_parents)
3848
cache[current_revision_id] = parent_tree
3850
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3851
"""Fetch across a few revisions.
3853
:param revision_ids: The revisions to copy
3854
:param basis_id: The revision_id of a tree that must be in cache, used
3855
as a basis for delta when no other base is available
3856
:param cache: A cache of RevisionTrees that we can use.
3857
:param a_graph: A Graph object to determine the heads() of the
3858
rich-root data stream.
3859
:return: The revision_id of the last converted tree. The RevisionTree
3860
for it will be in cache
3862
# Walk though all revisions; get inventory deltas, copy referenced
3863
# texts that delta references, insert the delta, revision and
3865
root_keys_to_create = set()
3868
pending_revisions = []
3869
parent_map = self.source.get_parent_map(revision_ids)
3870
self._fetch_parent_invs_for_stacking(parent_map, cache)
3871
self.source._safe_to_return_from_cache = True
3872
for tree in self.source.revision_trees(revision_ids):
3873
# Find a inventory delta for this revision.
3874
# Find text entries that need to be copied, too.
3875
current_revision_id = tree.get_revision_id()
3876
parent_ids = parent_map.get(current_revision_id, ())
3877
parent_trees = self._get_trees(parent_ids, cache)
3878
possible_trees = list(parent_trees)
3879
if len(possible_trees) == 0:
3880
# There either aren't any parents, or the parents are ghosts,
3881
# so just use the last converted tree.
3882
possible_trees.append((basis_id, cache[basis_id]))
3883
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3885
revision = self.source.get_revision(current_revision_id)
3886
pending_deltas.append((basis_id, delta,
3887
current_revision_id, revision.parent_ids))
3888
if self._converting_to_rich_root:
3889
self._revision_id_to_root_id[current_revision_id] = \
3891
# Determine which texts are in present in this revision but not in
3892
# any of the available parents.
3893
texts_possibly_new_in_tree = set()
3894
for old_path, new_path, file_id, entry in delta:
3895
if new_path is None:
3896
# This file_id isn't present in the new rev
3900
if not self.target.supports_rich_root():
3901
# The target doesn't support rich root, so we don't
3904
if self._converting_to_rich_root:
3905
# This can't be copied normally, we have to insert
3907
root_keys_to_create.add((file_id, entry.revision))
3910
texts_possibly_new_in_tree.add((file_id, entry.revision))
3911
for basis_id, basis_tree in possible_trees:
3912
basis_inv = basis_tree.inventory
3913
for file_key in list(texts_possibly_new_in_tree):
3914
file_id, file_revision = file_key
3916
entry = basis_inv[file_id]
3917
except errors.NoSuchId:
3919
if entry.revision == file_revision:
3920
texts_possibly_new_in_tree.remove(file_key)
3921
text_keys.update(texts_possibly_new_in_tree)
3922
pending_revisions.append(revision)
3923
cache[current_revision_id] = tree
3924
basis_id = current_revision_id
3925
self.source._safe_to_return_from_cache = False
3927
from_texts = self.source.texts
3928
to_texts = self.target.texts
3929
if root_keys_to_create:
3930
root_stream = _mod_fetch._new_root_data_stream(
3931
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3932
self.source, graph=a_graph)
3933
to_texts.insert_record_stream(root_stream)
3934
to_texts.insert_record_stream(from_texts.get_record_stream(
3935
text_keys, self.target._format._fetch_order,
3936
not self.target._format._fetch_uses_deltas))
3937
# insert inventory deltas
3938
for delta in pending_deltas:
3939
self.target.add_inventory_by_delta(*delta)
3940
if self.target._fallback_repositories:
3941
# Make sure this stacked repository has all the parent inventories
3942
# for the new revisions that we are about to insert. We do this
3943
# before adding the revisions so that no revision is added until
3944
# all the inventories it may depend on are added.
3945
# Note that this is overzealous, as we may have fetched these in an
3948
revision_ids = set()
3949
for revision in pending_revisions:
3950
revision_ids.add(revision.revision_id)
3951
parent_ids.update(revision.parent_ids)
3952
parent_ids.difference_update(revision_ids)
3953
parent_ids.discard(_mod_revision.NULL_REVISION)
3954
parent_map = self.source.get_parent_map(parent_ids)
3955
# we iterate over parent_map and not parent_ids because we don't
3956
# want to try copying any revision which is a ghost
3957
for parent_tree in self.source.revision_trees(parent_map):
3958
current_revision_id = parent_tree.get_revision_id()
3959
parents_parents = parent_map[current_revision_id]
3960
possible_trees = self._get_trees(parents_parents, cache)
3961
if len(possible_trees) == 0:
3962
# There either aren't any parents, or the parents are
3963
# ghosts, so just use the last converted tree.
3964
possible_trees.append((basis_id, cache[basis_id]))
3965
basis_id, delta = self._get_delta_for_revision(parent_tree,
3966
parents_parents, possible_trees)
3967
self.target.add_inventory_by_delta(
3968
basis_id, delta, current_revision_id, parents_parents)
3969
# insert signatures and revisions
3970
for revision in pending_revisions:
2305
"""Be compatible with known Pack formats.
2307
We don't test for the stores being of specific types because that
2308
could lead to confusing results, and there is no need to be
2311
from bzrlib.repofmt.pack_repo import RepositoryFormatPack
2313
are_packs = (isinstance(source._format, RepositoryFormatPack) and
2314
isinstance(target._format, RepositoryFormatPack))
2315
except AttributeError:
2317
return are_packs and InterRepository._same_model(source, target)
2320
def fetch(self, revision_id=None, pb=None):
2321
"""See InterRepository.fetch()."""
2322
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2323
self.source, self.source._format, self.target, self.target._format)
2324
self.count_copied = 0
2325
if revision_id is None:
2327
# everything to do - use pack logic
2328
# to fetch from all packs to one without
2329
# inventory parsing etc, IFF nothing to be copied is in the target.
2331
revision_ids = self.source.all_revision_ids()
2332
# implementing the TODO will involve:
2333
# - detecting when all of a pack is selected
2334
# - avoiding as much as possible pre-selection, so the
2335
# more-core routines such as create_pack_from_packs can filter in
2336
# a just-in-time fashion. (though having a HEADS list on a
2337
# repository might make this a lot easier, because we could
2338
# sensibly detect 'new revisions' without doing a full index scan.
2339
elif _mod_revision.is_null(revision_id):
3972
signature = self.source.get_signature_text(
3973
revision.revision_id)
3974
self.target.add_signature_text(revision.revision_id,
2344
revision_ids = self.missing_revision_ids(revision_id)
3976
2345
except errors.NoSuchRevision:
3978
self.target.add_revision(revision.revision_id, revision)
3981
def _fetch_all_revisions(self, revision_ids, pb):
3982
"""Fetch everything for the list of revisions.
3984
:param revision_ids: The list of revisions to fetch. Must be in
3986
:param pb: A ProgressTask
3989
basis_id, basis_tree = self._get_basis(revision_ids[0])
3991
cache = lru_cache.LRUCache(100)
3992
cache[basis_id] = basis_tree
3993
del basis_tree # We don't want to hang on to it here
3995
if self._converting_to_rich_root and len(revision_ids) > 100:
3996
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
4001
for offset in range(0, len(revision_ids), batch_size):
4002
self.target.start_write_group()
4004
pb.update('Transferring revisions', offset,
4006
batch = revision_ids[offset:offset+batch_size]
4007
basis_id = self._fetch_batch(batch, basis_id, cache,
4010
self.source._safe_to_return_from_cache = False
4011
self.target.abort_write_group()
4014
hint = self.target.commit_write_group()
4017
if hints and self.target._format.pack_compresses:
4018
self.target.pack(hint=hints)
4019
pb.update('Transferring revisions', len(revision_ids),
4023
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
4025
"""See InterRepository.fetch()."""
4026
if fetch_spec is not None:
4027
raise AssertionError("Not implemented yet...")
4028
ui.ui_factory.warn_experimental_format_fetch(self)
4029
if (not self.source.supports_rich_root()
4030
and self.target.supports_rich_root()):
4031
self._converting_to_rich_root = True
4032
self._revision_id_to_root_id = {}
4034
self._converting_to_rich_root = False
4035
# See <https://launchpad.net/bugs/456077> asking for a warning here
4036
if self.source._format.network_name() != self.target._format.network_name():
4037
ui.ui_factory.show_user_warning('cross_format_fetch',
4038
from_format=self.source._format,
4039
to_format=self.target._format)
4040
revision_ids = self.target.search_missing_revision_ids(self.source,
4041
revision_id, find_ghosts=find_ghosts).get_keys()
4042
if not revision_ids:
4044
revision_ids = tsort.topo_sort(
4045
self.source.get_graph().get_parent_map(revision_ids))
4046
if not revision_ids:
4048
# Walk though all revisions; get inventory deltas, copy referenced
4049
# texts that delta references, insert the delta, revision and
4052
my_pb = ui.ui_factory.nested_progress_bar()
4055
symbol_versioning.warn(
4056
symbol_versioning.deprecated_in((1, 14, 0))
4057
% "pb parameter to fetch()")
4060
self._fetch_all_revisions(revision_ids, pb)
4062
if my_pb is not None:
4064
return len(revision_ids), 0
4066
def _get_basis(self, first_revision_id):
4067
"""Get a revision and tree which exists in the target.
4069
This assumes that first_revision_id is selected for transmission
4070
because all other ancestors are already present. If we can't find an
4071
ancestor we fall back to NULL_REVISION since we know that is safe.
4073
:return: (basis_id, basis_tree)
4075
first_rev = self.source.get_revision(first_revision_id)
4077
basis_id = first_rev.parent_ids[0]
4078
# only valid as a basis if the target has it
4079
self.target.get_revision(basis_id)
4080
# Try to get a basis tree - if its a ghost it will hit the
4081
# NoSuchRevision case.
4082
basis_tree = self.source.revision_tree(basis_id)
4083
except (IndexError, errors.NoSuchRevision):
4084
basis_id = _mod_revision.NULL_REVISION
4085
basis_tree = self.source.revision_tree(basis_id)
4086
return basis_id, basis_tree
4089
InterRepository.register_optimiser(InterDifferingSerializer)
2346
raise errors.InstallFailed([revision_id])
2347
packs = self.source._pack_collection.all_packs()
2348
pack = self.target._pack_collection.create_pack_from_packs(
2349
packs, '.fetch', revision_ids,
2351
if pack is not None:
2352
self.target._pack_collection._save_pack_names()
2353
# Trigger an autopack. This may duplicate effort as we've just done
2354
# a pack creation, but for now it is simpler to think about as
2355
# 'upload data, then repack if needed'.
2356
self.target._pack_collection.autopack()
2357
return pack.get_revision_count()
2362
def missing_revision_ids(self, revision_id=None):
2363
"""See InterRepository.missing_revision_ids()."""
2364
if revision_id is not None:
2365
source_ids = self.source.get_ancestry(revision_id)
2366
assert source_ids[0] is None
2369
source_ids = self.source.all_revision_ids()
2370
# source_ids is the worst possible case we may need to pull.
2371
# now we want to filter source_ids against what we actually
2372
# have in target, but don't try to check for existence where we know
2373
# we do not have a revision as that would be pointless.
2374
target_ids = set(self.target.all_revision_ids())
2375
return [r for r in source_ids if (r not in target_ids)]
2378
class InterModel1and2(InterRepository):
2381
def _get_repo_format_to_test(self):
2385
def is_compatible(source, target):
2386
if not source.supports_rich_root() and target.supports_rich_root():
2392
def fetch(self, revision_id=None, pb=None):
2393
"""See InterRepository.fetch()."""
2394
from bzrlib.fetch import Model1toKnit2Fetcher
2395
f = Model1toKnit2Fetcher(to_repository=self.target,
2396
from_repository=self.source,
2397
last_revision=revision_id,
2399
return f.count_copied, f.failed_revisions
2402
def copy_content(self, revision_id=None):
2403
"""Make a complete copy of the content in self into destination.
2405
This is a destructive operation! Do not use it on existing
2408
:param revision_id: Only copy the content needed to construct
2409
revision_id and its parents.
2412
self.target.set_make_working_trees(self.source.make_working_trees())
2413
except NotImplementedError:
2415
# but don't bother fetching if we have the needed data now.
2416
if (revision_id not in (None, _mod_revision.NULL_REVISION) and
2417
self.target.has_revision(revision_id)):
2419
self.target.fetch(self.source, revision_id=revision_id)
2422
class InterKnit1and2(InterKnitRepo):
2425
def _get_repo_format_to_test(self):
2429
def is_compatible(source, target):
2430
"""Be compatible with Knit1 source and Knit3 target"""
2431
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit3
2433
from bzrlib.repofmt.knitrepo import (RepositoryFormatKnit1,
2434
RepositoryFormatKnit3)
2435
from bzrlib.repofmt.pack_repo import (RepositoryFormatKnitPack1,
2436
RepositoryFormatKnitPack3)
2437
return (isinstance(source._format,
2438
(RepositoryFormatKnit1, RepositoryFormatKnitPack1)) and
2439
isinstance(target._format,
2440
(RepositoryFormatKnit3, RepositoryFormatKnitPack3))
2442
except AttributeError:
2446
def fetch(self, revision_id=None, pb=None):
2447
"""See InterRepository.fetch()."""
2448
from bzrlib.fetch import Knit1to2Fetcher
2449
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
2450
self.source, self.source._format, self.target,
2451
self.target._format)
2452
f = Knit1to2Fetcher(to_repository=self.target,
2453
from_repository=self.source,
2454
last_revision=revision_id,
2456
return f.count_copied, f.failed_revisions
2459
class InterRemoteToOther(InterRepository):
2461
def __init__(self, source, target):
2462
InterRepository.__init__(self, source, target)
2463
self._real_inter = None
2466
def is_compatible(source, target):
2467
if not isinstance(source, remote.RemoteRepository):
2469
source._ensure_real()
2470
real_source = source._real_repository
2471
# Is source's model compatible with target's model, and are they the
2472
# same format? Currently we can only optimise fetching from an
2473
# identical model & format repo.
2474
assert not isinstance(real_source, remote.RemoteRepository), (
2475
"We don't support remote repos backed by remote repos yet.")
2476
return real_source._format == target._format
2479
def fetch(self, revision_id=None, pb=None):
2480
"""See InterRepository.fetch()."""
2481
from bzrlib.fetch import RemoteToOtherFetcher
2482
mutter("Using fetch logic to copy between %s(remote) and %s(%s)",
2483
self.source, self.target, self.target._format)
2484
# TODO: jam 20070210 This should be an assert, not a translate
2485
revision_id = osutils.safe_revision_id(revision_id)
2486
f = RemoteToOtherFetcher(to_repository=self.target,
2487
from_repository=self.source,
2488
last_revision=revision_id,
2490
return f.count_copied, f.failed_revisions
2493
def _get_repo_format_to_test(self):
2497
class InterOtherToRemote(InterRepository):
2499
def __init__(self, source, target):
2500
InterRepository.__init__(self, source, target)
2501
self._real_inter = None
2504
def is_compatible(source, target):
2505
if isinstance(target, remote.RemoteRepository):
2509
def _ensure_real_inter(self):
2510
if self._real_inter is None:
2511
self.target._ensure_real()
2512
real_target = self.target._real_repository
2513
self._real_inter = InterRepository.get(self.source, real_target)
2515
def copy_content(self, revision_id=None):
2516
self._ensure_real_inter()
2517
self._real_inter.copy_content(revision_id=revision_id)
2519
def fetch(self, revision_id=None, pb=None):
2520
self._ensure_real_inter()
2521
self._real_inter.fetch(revision_id=revision_id, pb=pb)
2524
def _get_repo_format_to_test(self):
4090
2528
InterRepository.register_optimiser(InterSameDataRepository)
4091
2529
InterRepository.register_optimiser(InterWeaveRepo)
4092
2530
InterRepository.register_optimiser(InterKnitRepo)
2531
InterRepository.register_optimiser(InterModel1and2)
2532
InterRepository.register_optimiser(InterKnit1and2)
2533
InterRepository.register_optimiser(InterPackRepo)
2534
InterRepository.register_optimiser(InterRemoteToOther)
2535
InterRepository.register_optimiser(InterOtherToRemote)
4095
2538
class CopyConverter(object):
4096
2539
"""A repository conversion tool which just performs a copy of the content.
4098
2541
This is slow but quite reliable.
4170
2617
return _unescape_re.sub(_unescaper, data)
4173
class _VersionedFileChecker(object):
2620
class _RevisionTextVersionCache(object):
2621
"""A cache of the versionedfile versions for revision and file-id."""
4175
def __init__(self, repository, text_key_references=None, ancestors=None):
2623
def __init__(self, repository):
4176
2624
self.repository = repository
4177
self.text_index = self.repository._generate_text_key_index(
4178
text_key_references=text_key_references, ancestors=ancestors)
4180
def calculate_file_version_parents(self, text_key):
4181
"""Calculate the correct parents for a file version according to
4184
parent_keys = self.text_index[text_key]
4185
if parent_keys == [_mod_revision.NULL_REVISION]:
4187
return tuple(parent_keys)
4189
def check_file_version_parents(self, texts, progress_bar=None):
4190
"""Check the parents stored in a versioned file are correct.
4192
It also detects file versions that are not referenced by their
4193
corresponding revision's inventory.
4195
:returns: A tuple of (wrong_parents, dangling_file_versions).
4196
wrong_parents is a dict mapping {revision_id: (stored_parents,
4197
correct_parents)} for each revision_id where the stored parents
4198
are not correct. dangling_file_versions is a set of (file_id,
4199
revision_id) tuples for versions that are present in this versioned
4200
file, but not used by the corresponding inventory.
4202
local_progress = None
4203
if progress_bar is None:
4204
local_progress = ui.ui_factory.nested_progress_bar()
4205
progress_bar = local_progress
2625
self.revision_versions = {}
2626
self.revision_parents = {}
2627
self.repo_graph = self.repository.get_graph()
2628
# XXX: RBC: I haven't tracked down what uses this, but it would be
2629
# better to use the headscache directly I think.
2630
self.heads = graph.HeadsCache(self.repo_graph).heads
2632
def add_revision_text_versions(self, tree):
2633
"""Cache text version data from the supplied revision tree"""
2635
for path, entry in tree.iter_entries_by_dir():
2636
inv_revisions[entry.file_id] = entry.revision
2637
self.revision_versions[tree.get_revision_id()] = inv_revisions
2638
return inv_revisions
2640
def get_text_version(self, file_id, revision_id):
2641
"""Determine the text version for a given file-id and revision-id"""
4207
return self._check_file_version_parents(texts, progress_bar)
4210
local_progress.finished()
4212
def _check_file_version_parents(self, texts, progress_bar):
4213
"""See check_file_version_parents."""
4215
self.file_ids = set([file_id for file_id, _ in
4216
self.text_index.iterkeys()])
4217
# text keys is now grouped by file_id
4218
n_versions = len(self.text_index)
4219
progress_bar.update('loading text store', 0, n_versions)
4220
parent_map = self.repository.texts.get_parent_map(self.text_index)
4221
# On unlistable transports this could well be empty/error...
4222
text_keys = self.repository.texts.keys()
4223
unused_keys = frozenset(text_keys) - set(self.text_index)
4224
for num, key in enumerate(self.text_index.iterkeys()):
4225
progress_bar.update('checking text graph', num, n_versions)
4226
correct_parents = self.calculate_file_version_parents(key)
2643
inv_revisions = self.revision_versions[revision_id]
4228
knit_parents = parent_map[key]
2646
tree = self.repository.revision_tree(revision_id)
4229
2647
except errors.RevisionNotPresent:
2648
self.revision_versions[revision_id] = inv_revisions = {}
2650
inv_revisions = self.add_revision_text_versions(tree)
2651
return inv_revisions.get(file_id)
2653
def prepopulate_revs(self, revision_ids):
2654
# Filter out versions that we don't have an inventory for, so that the
2655
# revision_trees() call won't fail.
2656
inv_weave = self.repository.get_inventory_weave()
2657
revs = [r for r in revision_ids if inv_weave.has_version(r)]
2658
# XXX: this loop is very similar to
2659
# bzrlib.fetch.Inter1and2Helper.iter_rev_trees.
2661
for tree in self.repository.revision_trees(revs[:100]):
2662
if tree.inventory.revision_id is None:
2663
tree.inventory.revision_id = tree.get_revision_id()
2664
self.add_revision_text_versions(tree)
2667
def get_parents(self, revision_id):
2669
return self.revision_parents[revision_id]
2671
parents = self.repository.get_parents([revision_id])[0]
2672
self.revision_parents[revision_id] = parents
2676
class VersionedFileChecker(object):
2678
def __init__(self, planned_revisions, revision_versions, repository):
2679
self.planned_revisions = planned_revisions
2680
self.revision_versions = revision_versions
2681
self.repository = repository
2683
def calculate_file_version_parents(self, revision_id, file_id):
2684
text_revision = self.revision_versions.get_text_version(
2685
file_id, revision_id)
2686
if text_revision is None:
2688
parents_of_text_revision = self.revision_versions.get_parents(
2690
parents_from_inventories = []
2691
for parent in parents_of_text_revision:
2692
if parent == _mod_revision.NULL_REVISION:
2694
introduced_in = self.revision_versions.get_text_version(file_id,
2696
if introduced_in is not None:
2697
parents_from_inventories.append(introduced_in)
2698
heads = set(self.revision_versions.heads(parents_from_inventories))
2700
for parent in parents_from_inventories:
2701
if parent in heads and parent not in new_parents:
2702
new_parents.append(parent)
2703
return tuple(new_parents)
2705
def check_file_version_parents(self, weave, file_id):
2707
for num, revision_id in enumerate(self.planned_revisions):
2708
correct_parents = self.calculate_file_version_parents(
2709
revision_id, file_id)
2710
if correct_parents is None:
2712
text_revision = self.revision_versions.get_text_version(
2713
file_id, revision_id)
2714
knit_parents = tuple(weave.get_parents(text_revision))
4232
2715
if correct_parents != knit_parents:
4233
wrong_parents[key] = (knit_parents, correct_parents)
4234
return wrong_parents, unused_keys
4237
def _old_get_graph(repository, revision_id):
4238
"""DO NOT USE. That is all. I'm serious."""
4239
graph = repository.get_graph()
4240
revision_graph = dict(((key, value) for key, value in
4241
graph.iter_ancestry([revision_id]) if value is not None))
4242
return _strip_NULL_ghosts(revision_graph)
4245
def _strip_NULL_ghosts(revision_graph):
4246
"""Also don't use this. more compatibility code for unmigrated clients."""
4247
# Filter ghosts, and null:
4248
if _mod_revision.NULL_REVISION in revision_graph:
4249
del revision_graph[_mod_revision.NULL_REVISION]
4250
for key, parents in revision_graph.items():
4251
revision_graph[key] = tuple(parent for parent in parents if parent
4253
return revision_graph
4256
class StreamSink(object):
4257
"""An object that can insert a stream into a repository.
4259
This interface handles the complexity of reserialising inventories and
4260
revisions from different formats, and allows unidirectional insertion into
4261
stacked repositories without looking for the missing basis parents
4265
def __init__(self, target_repo):
4266
self.target_repo = target_repo
4268
def insert_stream(self, stream, src_format, resume_tokens):
4269
"""Insert a stream's content into the target repository.
4271
:param src_format: a bzr repository format.
4273
:return: a list of resume tokens and an iterable of keys additional
4274
items required before the insertion can be completed.
4276
self.target_repo.lock_write()
4279
self.target_repo.resume_write_group(resume_tokens)
4282
self.target_repo.start_write_group()
4285
# locked_insert_stream performs a commit|suspend.
4286
return self._locked_insert_stream(stream, src_format, is_resume)
4288
self.target_repo.abort_write_group(suppress_errors=True)
4291
self.target_repo.unlock()
4293
def _locked_insert_stream(self, stream, src_format, is_resume):
4294
to_serializer = self.target_repo._format._serializer
4295
src_serializer = src_format._serializer
4297
if to_serializer == src_serializer:
4298
# If serializers match and the target is a pack repository, set the
4299
# write cache size on the new pack. This avoids poor performance
4300
# on transports where append is unbuffered (such as
4301
# RemoteTransport). This is safe to do because nothing should read
4302
# back from the target repository while a stream with matching
4303
# serialization is being inserted.
4304
# The exception is that a delta record from the source that should
4305
# be a fulltext may need to be expanded by the target (see
4306
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4307
# explicitly flush any buffered writes first in that rare case.
4309
new_pack = self.target_repo._pack_collection._new_pack
4310
except AttributeError:
4311
# Not a pack repository
4314
new_pack.set_write_cache_size(1024*1024)
4315
for substream_type, substream in stream:
4316
if 'stream' in debug.debug_flags:
4317
mutter('inserting substream: %s', substream_type)
4318
if substream_type == 'texts':
4319
self.target_repo.texts.insert_record_stream(substream)
4320
elif substream_type == 'inventories':
4321
if src_serializer == to_serializer:
4322
self.target_repo.inventories.insert_record_stream(
4325
self._extract_and_insert_inventories(
4326
substream, src_serializer)
4327
elif substream_type == 'inventory-deltas':
4328
self._extract_and_insert_inventory_deltas(
4329
substream, src_serializer)
4330
elif substream_type == 'chk_bytes':
4331
# XXX: This doesn't support conversions, as it assumes the
4332
# conversion was done in the fetch code.
4333
self.target_repo.chk_bytes.insert_record_stream(substream)
4334
elif substream_type == 'revisions':
4335
# This may fallback to extract-and-insert more often than
4336
# required if the serializers are different only in terms of
4338
if src_serializer == to_serializer:
4339
self.target_repo.revisions.insert_record_stream(
4342
self._extract_and_insert_revisions(substream,
4344
elif substream_type == 'signatures':
4345
self.target_repo.signatures.insert_record_stream(substream)
4347
raise AssertionError('kaboom! %s' % (substream_type,))
4348
# Done inserting data, and the missing_keys calculations will try to
4349
# read back from the inserted data, so flush the writes to the new pack
4350
# (if this is pack format).
4351
if new_pack is not None:
4352
new_pack._write_data('', flush=True)
4353
# Find all the new revisions (including ones from resume_tokens)
4354
missing_keys = self.target_repo.get_missing_parent_inventories(
4355
check_for_missing_texts=is_resume)
4357
for prefix, versioned_file in (
4358
('texts', self.target_repo.texts),
4359
('inventories', self.target_repo.inventories),
4360
('revisions', self.target_repo.revisions),
4361
('signatures', self.target_repo.signatures),
4362
('chk_bytes', self.target_repo.chk_bytes),
4364
if versioned_file is None:
4366
# TODO: key is often going to be a StaticTuple object
4367
# I don't believe we can define a method by which
4368
# (prefix,) + StaticTuple will work, though we could
4369
# define a StaticTuple.sq_concat that would allow you to
4370
# pass in either a tuple or a StaticTuple as the second
4371
# object, so instead we could have:
4372
# StaticTuple(prefix) + key here...
4373
missing_keys.update((prefix,) + key for key in
4374
versioned_file.get_missing_compression_parent_keys())
4375
except NotImplementedError:
4376
# cannot even attempt suspending, and missing would have failed
4377
# during stream insertion.
4378
missing_keys = set()
4381
# suspend the write group and tell the caller what we is
4382
# missing. We know we can suspend or else we would not have
4383
# entered this code path. (All repositories that can handle
4384
# missing keys can handle suspending a write group).
4385
write_group_tokens = self.target_repo.suspend_write_group()
4386
return write_group_tokens, missing_keys
4387
hint = self.target_repo.commit_write_group()
4388
if (to_serializer != src_serializer and
4389
self.target_repo._format.pack_compresses):
4390
self.target_repo.pack(hint=hint)
4393
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4394
target_rich_root = self.target_repo._format.rich_root_data
4395
target_tree_refs = self.target_repo._format.supports_tree_reference
4396
for record in substream:
4397
# Insert the delta directly
4398
inventory_delta_bytes = record.get_bytes_as('fulltext')
4399
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4401
parse_result = deserialiser.parse_text_bytes(
4402
inventory_delta_bytes)
4403
except inventory_delta.IncompatibleInventoryDelta, err:
4404
trace.mutter("Incompatible delta: %s", err.msg)
4405
raise errors.IncompatibleRevision(self.target_repo._format)
4406
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4407
revision_id = new_id
4408
parents = [key[0] for key in record.parents]
4409
self.target_repo.add_inventory_by_delta(
4410
basis_id, inv_delta, revision_id, parents)
4412
def _extract_and_insert_inventories(self, substream, serializer,
4414
"""Generate a new inventory versionedfile in target, converting data.
4416
The inventory is retrieved from the source, (deserializing it), and
4417
stored in the target (reserializing it in a different format).
4419
target_rich_root = self.target_repo._format.rich_root_data
4420
target_tree_refs = self.target_repo._format.supports_tree_reference
4421
for record in substream:
4422
# It's not a delta, so it must be a fulltext in the source
4423
# serializer's format.
4424
bytes = record.get_bytes_as('fulltext')
4425
revision_id = record.key[0]
4426
inv = serializer.read_inventory_from_string(bytes, revision_id)
4427
parents = [key[0] for key in record.parents]
4428
self.target_repo.add_inventory(revision_id, inv, parents)
4429
# No need to keep holding this full inv in memory when the rest of
4430
# the substream is likely to be all deltas.
4433
def _extract_and_insert_revisions(self, substream, serializer):
4434
for record in substream:
4435
bytes = record.get_bytes_as('fulltext')
4436
revision_id = record.key[0]
4437
rev = serializer.read_revision_from_string(bytes)
4438
if rev.revision_id != revision_id:
4439
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4440
self.target_repo.add_revision(revision_id, rev)
4443
if self.target_repo._format._fetch_reconcile:
4444
self.target_repo.reconcile()
4447
class StreamSource(object):
4448
"""A source of a stream for fetching between repositories."""
4450
def __init__(self, from_repository, to_format):
4451
"""Create a StreamSource streaming from from_repository."""
4452
self.from_repository = from_repository
4453
self.to_format = to_format
4455
def delta_on_metadata(self):
4456
"""Return True if delta's are permitted on metadata streams.
4458
That is on revisions and signatures.
4460
src_serializer = self.from_repository._format._serializer
4461
target_serializer = self.to_format._serializer
4462
return (self.to_format._fetch_uses_deltas and
4463
src_serializer == target_serializer)
4465
def _fetch_revision_texts(self, revs):
4466
# fetch signatures first and then the revision texts
4467
# may need to be a InterRevisionStore call here.
4468
from_sf = self.from_repository.signatures
4469
# A missing signature is just skipped.
4470
keys = [(rev_id,) for rev_id in revs]
4471
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4473
self.to_format._fetch_order,
4474
not self.to_format._fetch_uses_deltas))
4475
# If a revision has a delta, this is actually expanded inside the
4476
# insert_record_stream code now, which is an alternate fix for
4478
from_rf = self.from_repository.revisions
4479
revisions = from_rf.get_record_stream(
4481
self.to_format._fetch_order,
4482
not self.delta_on_metadata())
4483
return [('signatures', signatures), ('revisions', revisions)]
4485
def _generate_root_texts(self, revs):
4486
"""This will be called by get_stream between fetching weave texts and
4487
fetching the inventory weave.
4489
if self._rich_root_upgrade():
4490
return _mod_fetch.Inter1and2Helper(
4491
self.from_repository).generate_root_texts(revs)
4495
def get_stream(self, search):
4497
revs = search.get_keys()
4498
graph = self.from_repository.get_graph()
4499
revs = tsort.topo_sort(graph.get_parent_map(revs))
4500
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4502
for knit_kind, file_id, revisions in data_to_fetch:
4503
if knit_kind != phase:
4505
# Make a new progress bar for this phase
4506
if knit_kind == "file":
4507
# Accumulate file texts
4508
text_keys.extend([(file_id, revision) for revision in
4510
elif knit_kind == "inventory":
4511
# Now copy the file texts.
4512
from_texts = self.from_repository.texts
4513
yield ('texts', from_texts.get_record_stream(
4514
text_keys, self.to_format._fetch_order,
4515
not self.to_format._fetch_uses_deltas))
4516
# Cause an error if a text occurs after we have done the
4519
# Before we process the inventory we generate the root
4520
# texts (if necessary) so that the inventories references
4522
for _ in self._generate_root_texts(revs):
4524
# we fetch only the referenced inventories because we do not
4525
# know for unselected inventories whether all their required
4526
# texts are present in the other repository - it could be
4528
for info in self._get_inventory_stream(revs):
4530
elif knit_kind == "signatures":
4531
# Nothing to do here; this will be taken care of when
4532
# _fetch_revision_texts happens.
4534
elif knit_kind == "revisions":
4535
for record in self._fetch_revision_texts(revs):
4538
raise AssertionError("Unknown knit kind %r" % knit_kind)
4540
def get_stream_for_missing_keys(self, missing_keys):
4541
# missing keys can only occur when we are byte copying and not
4542
# translating (because translation means we don't send
4543
# unreconstructable deltas ever).
4545
keys['texts'] = set()
4546
keys['revisions'] = set()
4547
keys['inventories'] = set()
4548
keys['chk_bytes'] = set()
4549
keys['signatures'] = set()
4550
for key in missing_keys:
4551
keys[key[0]].add(key[1:])
4552
if len(keys['revisions']):
4553
# If we allowed copying revisions at this point, we could end up
4554
# copying a revision without copying its required texts: a
4555
# violation of the requirements for repository integrity.
4556
raise AssertionError(
4557
'cannot copy revisions to fill in missing deltas %s' % (
4558
keys['revisions'],))
4559
for substream_kind, keys in keys.iteritems():
4560
vf = getattr(self.from_repository, substream_kind)
4561
if vf is None and keys:
4562
raise AssertionError(
4563
"cannot fill in keys for a versioned file we don't"
4564
" have: %s needs %s" % (substream_kind, keys))
4566
# No need to stream something we don't have
4568
if substream_kind == 'inventories':
4569
# Some missing keys are genuinely ghosts, filter those out.
4570
present = self.from_repository.inventories.get_parent_map(keys)
4571
revs = [key[0] for key in present]
4572
# Get the inventory stream more-or-less as we do for the
4573
# original stream; there's no reason to assume that records
4574
# direct from the source will be suitable for the sink. (Think
4575
# e.g. 2a -> 1.9-rich-root).
4576
for info in self._get_inventory_stream(revs, missing=True):
4580
# Ask for full texts always so that we don't need more round trips
4581
# after this stream.
4582
# Some of the missing keys are genuinely ghosts, so filter absent
4583
# records. The Sink is responsible for doing another check to
4584
# ensure that ghosts don't introduce missing data for future
4586
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4587
self.to_format._fetch_order, True))
4588
yield substream_kind, stream
4590
def inventory_fetch_order(self):
4591
if self._rich_root_upgrade():
4592
return 'topological'
4594
return self.to_format._fetch_order
4596
def _rich_root_upgrade(self):
4597
return (not self.from_repository._format.rich_root_data and
4598
self.to_format.rich_root_data)
4600
def _get_inventory_stream(self, revision_ids, missing=False):
4601
from_format = self.from_repository._format
4602
if (from_format.supports_chks and self.to_format.supports_chks and
4603
from_format.network_name() == self.to_format.network_name()):
4604
raise AssertionError(
4605
"this case should be handled by GroupCHKStreamSource")
4606
elif 'forceinvdeltas' in debug.debug_flags:
4607
return self._get_convertable_inventory_stream(revision_ids,
4608
delta_versus_null=missing)
4609
elif from_format.network_name() == self.to_format.network_name():
4611
return self._get_simple_inventory_stream(revision_ids,
4613
elif (not from_format.supports_chks and not self.to_format.supports_chks
4614
and from_format._serializer == self.to_format._serializer):
4615
# Essentially the same format.
4616
return self._get_simple_inventory_stream(revision_ids,
4619
# Any time we switch serializations, we want to use an
4620
# inventory-delta based approach.
4621
return self._get_convertable_inventory_stream(revision_ids,
4622
delta_versus_null=missing)
4624
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4625
# NB: This currently reopens the inventory weave in source;
4626
# using a single stream interface instead would avoid this.
4627
from_weave = self.from_repository.inventories
4629
delta_closure = True
4631
delta_closure = not self.delta_on_metadata()
4632
yield ('inventories', from_weave.get_record_stream(
4633
[(rev_id,) for rev_id in revision_ids],
4634
self.inventory_fetch_order(), delta_closure))
4636
def _get_convertable_inventory_stream(self, revision_ids,
4637
delta_versus_null=False):
4638
# The two formats are sufficiently different that there is no fast
4639
# path, so we need to send just inventorydeltas, which any
4640
# sufficiently modern client can insert into any repository.
4641
# The StreamSink code expects to be able to
4642
# convert on the target, so we need to put bytes-on-the-wire that can
4643
# be converted. That means inventory deltas (if the remote is <1.19,
4644
# RemoteStreamSink will fallback to VFS to insert the deltas).
4645
yield ('inventory-deltas',
4646
self._stream_invs_as_deltas(revision_ids,
4647
delta_versus_null=delta_versus_null))
4649
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4650
"""Return a stream of inventory-deltas for the given rev ids.
4652
:param revision_ids: The list of inventories to transmit
4653
:param delta_versus_null: Don't try to find a minimal delta for this
4654
entry, instead compute the delta versus the NULL_REVISION. This
4655
effectively streams a complete inventory. Used for stuff like
4656
filling in missing parents, etc.
4658
from_repo = self.from_repository
4659
revision_keys = [(rev_id,) for rev_id in revision_ids]
4660
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4661
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4663
inventories = self.from_repository.iter_inventories(
4664
revision_ids, 'topological')
4665
format = from_repo._format
4666
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4667
inventory_cache = lru_cache.LRUCache(50)
4668
null_inventory = from_repo.revision_tree(
4669
_mod_revision.NULL_REVISION).inventory
4670
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4671
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4672
# repo back into a non-rich-root repo ought to be allowed)
4673
serializer = inventory_delta.InventoryDeltaSerializer(
4674
versioned_root=format.rich_root_data,
4675
tree_references=format.supports_tree_reference)
4676
for inv in inventories:
4677
key = (inv.revision_id,)
4678
parent_keys = parent_map.get(key, ())
4680
if not delta_versus_null and parent_keys:
4681
# The caller did not ask for complete inventories and we have
4682
# some parents that we can delta against. Make a delta against
4683
# each parent so that we can find the smallest.
4684
parent_ids = [parent_key[0] for parent_key in parent_keys]
4685
for parent_id in parent_ids:
4686
if parent_id not in invs_sent_so_far:
4687
# We don't know that the remote side has this basis, so
4690
if parent_id == _mod_revision.NULL_REVISION:
4691
parent_inv = null_inventory
4693
parent_inv = inventory_cache.get(parent_id, None)
4694
if parent_inv is None:
4695
parent_inv = from_repo.get_inventory(parent_id)
4696
candidate_delta = inv._make_delta(parent_inv)
4697
if (delta is None or
4698
len(delta) > len(candidate_delta)):
4699
delta = candidate_delta
4700
basis_id = parent_id
4702
# Either none of the parents ended up being suitable, or we
4703
# were asked to delta against NULL
4704
basis_id = _mod_revision.NULL_REVISION
4705
delta = inv._make_delta(null_inventory)
4706
invs_sent_so_far.add(inv.revision_id)
4707
inventory_cache[inv.revision_id] = inv
4708
delta_serialized = ''.join(
4709
serializer.delta_to_lines(basis_id, key[-1], delta))
4710
yield versionedfile.FulltextContentFactory(
4711
key, parent_keys, None, delta_serialized)
4714
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4715
stop_revision=None):
4716
"""Extend the partial history to include a given index
4718
If a stop_index is supplied, stop when that index has been reached.
4719
If a stop_revision is supplied, stop when that revision is
4720
encountered. Otherwise, stop when the beginning of history is
4723
:param stop_index: The index which should be present. When it is
4724
present, history extension will stop.
4725
:param stop_revision: The revision id which should be present. When
4726
it is encountered, history extension will stop.
4728
start_revision = partial_history_cache[-1]
4729
iterator = repo.iter_reverse_revision_history(start_revision)
4731
#skip the last revision in the list
4734
if (stop_index is not None and
4735
len(partial_history_cache) > stop_index):
4737
if partial_history_cache[-1] == stop_revision:
4739
revision_id = iterator.next()
4740
partial_history_cache.append(revision_id)
4741
except StopIteration:
2716
result[revision_id] = (knit_parents, correct_parents)
added
removed
bzrlib/repository.py
