741
844
Sets self._text_filter appropriately.
743
raise NotImplementedError(self._copy_inventory_texts)
846
# select inventory keys
847
inv_keys = self._revision_keys # currently the same keyspace, and note that
848
# querying for keys here could introduce a bug where an inventory item
849
# is missed, so do not change it to query separately without cross
850
# checking like the text key check below.
851
inventory_index_map, inventory_indices = self._pack_map_and_index_list(
853
inv_nodes = self._index_contents(inventory_indices, inv_keys)
854
# copy inventory keys and adjust values
855
# XXX: Should be a helper function to allow different inv representation
857
self.pb.update("Copying inventory texts", 2)
858
total_items, readv_group_iter = self._least_readv_node_readv(inv_nodes)
859
# Only grab the output lines if we will be processing them
860
output_lines = bool(self.revision_ids)
861
inv_lines = self._copy_nodes_graph(inventory_index_map,
862
self.new_pack._writer, self.new_pack.inventory_index,
863
readv_group_iter, total_items, output_lines=output_lines)
864
if self.revision_ids:
865
self._process_inventory_lines(inv_lines)
867
# eat the iterator to cause it to execute.
869
self._text_filter = None
870
if 'pack' in debug.debug_flags:
871
mutter('%s: create_pack: inventories copied: %s%s %d items t+%6.3fs',
872
time.ctime(), self._pack_collection._upload_transport.base,
873
self.new_pack.random_name,
874
self.new_pack.inventory_index.key_count(),
875
time.time() - self.new_pack.start_time)
745
877
def _copy_text_texts(self):
746
raise NotImplementedError(self._copy_text_texts)
879
text_index_map, text_nodes = self._get_text_nodes()
880
if self._text_filter is not None:
881
# We could return the keys copied as part of the return value from
882
# _copy_nodes_graph but this doesn't work all that well with the
883
# need to get line output too, so we check separately, and as we're
884
# going to buffer everything anyway, we check beforehand, which
885
# saves reading knit data over the wire when we know there are
887
text_nodes = set(text_nodes)
888
present_text_keys = set(_node[1] for _node in text_nodes)
889
missing_text_keys = set(self._text_filter) - present_text_keys
890
if missing_text_keys:
891
# TODO: raise a specific error that can handle many missing
893
mutter("missing keys during fetch: %r", missing_text_keys)
894
a_missing_key = missing_text_keys.pop()
895
raise errors.RevisionNotPresent(a_missing_key[1],
897
# copy text keys and adjust values
898
self.pb.update("Copying content texts", 3)
899
total_items, readv_group_iter = self._least_readv_node_readv(text_nodes)
900
list(self._copy_nodes_graph(text_index_map, self.new_pack._writer,
901
self.new_pack.text_index, readv_group_iter, total_items))
902
self._log_copied_texts()
748
904
def _create_pack_from_packs(self):
749
raise NotImplementedError(self._create_pack_from_packs)
905
self.pb.update("Opening pack", 0, 5)
906
self.new_pack = self.open_pack()
907
new_pack = self.new_pack
908
# buffer data - we won't be reading-back during the pack creation and
909
# this makes a significant difference on sftp pushes.
910
new_pack.set_write_cache_size(1024*1024)
911
if 'pack' in debug.debug_flags:
912
plain_pack_list = ['%s%s' % (a_pack.pack_transport.base, a_pack.name)
913
for a_pack in self.packs]
914
if self.revision_ids is not None:
915
rev_count = len(self.revision_ids)
918
mutter('%s: create_pack: creating pack from source packs: '
919
'%s%s %s revisions wanted %s t=0',
920
time.ctime(), self._pack_collection._upload_transport.base, new_pack.random_name,
921
plain_pack_list, rev_count)
922
self._copy_revision_texts()
923
self._copy_inventory_texts()
924
self._copy_text_texts()
925
# select signature keys
926
signature_filter = self._revision_keys # same keyspace
927
signature_index_map, signature_indices = self._pack_map_and_index_list(
929
signature_nodes = self._index_contents(signature_indices,
931
# copy signature keys and adjust values
932
self.pb.update("Copying signature texts", 4)
933
self._copy_nodes(signature_nodes, signature_index_map, new_pack._writer,
934
new_pack.signature_index)
935
if 'pack' in debug.debug_flags:
936
mutter('%s: create_pack: revision signatures copied: %s%s %d items t+%6.3fs',
937
time.ctime(), self._pack_collection._upload_transport.base, new_pack.random_name,
938
new_pack.signature_index.key_count(),
939
time.time() - new_pack.start_time)
941
# NB XXX: how to check CHK references are present? perhaps by yielding
942
# the items? How should that interact with stacked repos?
943
if new_pack.chk_index is not None:
945
if 'pack' in debug.debug_flags:
946
mutter('%s: create_pack: chk content copied: %s%s %d items t+%6.3fs',
947
time.ctime(), self._pack_collection._upload_transport.base,
948
new_pack.random_name,
949
new_pack.chk_index.key_count(),
950
time.time() - new_pack.start_time)
951
new_pack._check_references()
952
if not self._use_pack(new_pack):
955
self.pb.update("Finishing pack", 5)
957
self._pack_collection.allocate(new_pack)
960
def _copy_chks(self, refs=None):
961
# XXX: Todo, recursive follow-pointers facility when fetching some
963
chk_index_map, chk_indices = self._pack_map_and_index_list(
965
chk_nodes = self._index_contents(chk_indices, refs)
967
# TODO: This isn't strictly tasteful as we are accessing some private
968
# variables (_serializer). Perhaps a better way would be to have
969
# Repository._deserialise_chk_node()
970
search_key_func = chk_map.search_key_registry.get(
971
self._pack_collection.repo._serializer.search_key_name)
972
def accumlate_refs(lines):
973
# XXX: move to a generic location
975
bytes = ''.join(lines)
976
node = chk_map._deserialise(bytes, ("unknown",), search_key_func)
977
new_refs.update(node.refs())
978
self._copy_nodes(chk_nodes, chk_index_map, self.new_pack._writer,
979
self.new_pack.chk_index, output_lines=accumlate_refs)
982
def _copy_nodes(self, nodes, index_map, writer, write_index,
984
"""Copy knit nodes between packs with no graph references.
986
:param output_lines: Output full texts of copied items.
988
pb = ui.ui_factory.nested_progress_bar()
990
return self._do_copy_nodes(nodes, index_map, writer,
991
write_index, pb, output_lines=output_lines)
995
def _do_copy_nodes(self, nodes, index_map, writer, write_index, pb,
997
# for record verification
998
knit = KnitVersionedFiles(None, None)
999
# plan a readv on each source pack:
1001
nodes = sorted(nodes)
1002
# how to map this into knit.py - or knit.py into this?
1003
# we don't want the typical knit logic, we want grouping by pack
1004
# at this point - perhaps a helper library for the following code
1005
# duplication points?
1007
for index, key, value in nodes:
1008
if index not in request_groups:
1009
request_groups[index] = []
1010
request_groups[index].append((key, value))
1012
pb.update("Copied record", record_index, len(nodes))
1013
for index, items in request_groups.iteritems():
1014
pack_readv_requests = []
1015
for key, value in items:
1016
# ---- KnitGraphIndex.get_position
1017
bits = value[1:].split(' ')
1018
offset, length = int(bits[0]), int(bits[1])
1019
pack_readv_requests.append((offset, length, (key, value[0])))
1020
# linear scan up the pack
1021
pack_readv_requests.sort()
1023
pack_obj = index_map[index]
1024
transport, path = pack_obj.access_tuple()
1026
reader = pack.make_readv_reader(transport, path,
1027
[offset[0:2] for offset in pack_readv_requests])
1028
except errors.NoSuchFile:
1029
if self._reload_func is not None:
1032
for (names, read_func), (_1, _2, (key, eol_flag)) in \
1033
izip(reader.iter_records(), pack_readv_requests):
1034
raw_data = read_func(None)
1035
# check the header only
1036
if output_lines is not None:
1037
output_lines(knit._parse_record(key[-1], raw_data)[0])
1039
df, _ = knit._parse_record_header(key, raw_data)
1041
pos, size = writer.add_bytes_record(raw_data, names)
1042
write_index.add_node(key, eol_flag + "%d %d" % (pos, size))
1043
pb.update("Copied record", record_index)
1046
def _copy_nodes_graph(self, index_map, writer, write_index,
1047
readv_group_iter, total_items, output_lines=False):
1048
"""Copy knit nodes between packs.
1050
:param output_lines: Return lines present in the copied data as
1051
an iterator of line,version_id.
1053
pb = ui.ui_factory.nested_progress_bar()
1055
for result in self._do_copy_nodes_graph(index_map, writer,
1056
write_index, output_lines, pb, readv_group_iter, total_items):
1059
# Python 2.4 does not permit try:finally: in a generator.
1065
def _do_copy_nodes_graph(self, index_map, writer, write_index,
1066
output_lines, pb, readv_group_iter, total_items):
1067
# for record verification
1068
knit = KnitVersionedFiles(None, None)
1069
# for line extraction when requested (inventories only)
1071
factory = KnitPlainFactory()
1073
pb.update("Copied record", record_index, total_items)
1074
for index, readv_vector, node_vector in readv_group_iter:
1076
pack_obj = index_map[index]
1077
transport, path = pack_obj.access_tuple()
1079
reader = pack.make_readv_reader(transport, path, readv_vector)
1080
except errors.NoSuchFile:
1081
if self._reload_func is not None:
1084
for (names, read_func), (key, eol_flag, references) in \
1085
izip(reader.iter_records(), node_vector):
1086
raw_data = read_func(None)
1088
# read the entire thing
1089
content, _ = knit._parse_record(key[-1], raw_data)
1090
if len(references[-1]) == 0:
1091
line_iterator = factory.get_fulltext_content(content)
1093
line_iterator = factory.get_linedelta_content(content)
1094
for line in line_iterator:
1097
# check the header only
1098
df, _ = knit._parse_record_header(key, raw_data)
1100
pos, size = writer.add_bytes_record(raw_data, names)
1101
write_index.add_node(key, eol_flag + "%d %d" % (pos, size), references)
1102
pb.update("Copied record", record_index)
1105
def _get_text_nodes(self):
1106
text_index_map, text_indices = self._pack_map_and_index_list(
1108
return text_index_map, self._index_contents(text_indices,
1111
def _least_readv_node_readv(self, nodes):
1112
"""Generate request groups for nodes using the least readv's.
1114
:param nodes: An iterable of graph index nodes.
1115
:return: Total node count and an iterator of the data needed to perform
1116
readvs to obtain the data for nodes. Each item yielded by the
1117
iterator is a tuple with:
1118
index, readv_vector, node_vector. readv_vector is a list ready to
1119
hand to the transport readv method, and node_vector is a list of
1120
(key, eol_flag, references) for the node retrieved by the
1121
matching readv_vector.
1123
# group by pack so we do one readv per pack
1124
nodes = sorted(nodes)
1127
for index, key, value, references in nodes:
1128
if index not in request_groups:
1129
request_groups[index] = []
1130
request_groups[index].append((key, value, references))
1132
for index, items in request_groups.iteritems():
1133
pack_readv_requests = []
1134
for key, value, references in items:
1135
# ---- KnitGraphIndex.get_position
1136
bits = value[1:].split(' ')
1137
offset, length = int(bits[0]), int(bits[1])
1138
pack_readv_requests.append(
1139
((offset, length), (key, value[0], references)))
1140
# linear scan up the pack to maximum range combining.
1141
pack_readv_requests.sort()
1142
# split out the readv and the node data.
1143
pack_readv = [readv for readv, node in pack_readv_requests]
1144
node_vector = [node for readv, node in pack_readv_requests]
1145
result.append((index, pack_readv, node_vector))
1146
return total, result
751
1148
def _log_copied_texts(self):
752
1149
if 'pack' in debug.debug_flags:
765
1181
return new_pack.data_inserted()
1184
class OptimisingPacker(Packer):
1185
"""A packer which spends more time to create better disk layouts."""
1187
def _revision_node_readv(self, revision_nodes):
1188
"""Return the total revisions and the readv's to issue.
1190
This sort places revisions in topological order with the ancestors
1193
:param revision_nodes: The revision index contents for the packs being
1194
incorporated into the new pack.
1195
:return: As per _least_readv_node_readv.
1197
# build an ancestors dict
1200
for index, key, value, references in revision_nodes:
1201
ancestors[key] = references[0]
1202
by_key[key] = (index, value, references)
1203
order = tsort.topo_sort(ancestors)
1205
# Single IO is pathological, but it will work as a starting point.
1207
for key in reversed(order):
1208
index, value, references = by_key[key]
1209
# ---- KnitGraphIndex.get_position
1210
bits = value[1:].split(' ')
1211
offset, length = int(bits[0]), int(bits[1])
1213
(index, [(offset, length)], [(key, value[0], references)]))
1214
# TODO: combine requests in the same index that are in ascending order.
1215
return total, requests
1217
def open_pack(self):
1218
"""Open a pack for the pack we are creating."""
1219
new_pack = super(OptimisingPacker, self).open_pack()
1220
# Turn on the optimization flags for all the index builders.
1221
new_pack.revision_index.set_optimize(for_size=True)
1222
new_pack.inventory_index.set_optimize(for_size=True)
1223
new_pack.text_index.set_optimize(for_size=True)
1224
new_pack.signature_index.set_optimize(for_size=True)
1228
class ReconcilePacker(Packer):
1229
"""A packer which regenerates indices etc as it copies.
1231
This is used by ``bzr reconcile`` to cause parent text pointers to be
1235
def _extra_init(self):
1236
self._data_changed = False
1238
def _process_inventory_lines(self, inv_lines):
1239
"""Generate a text key reference map rather for reconciling with."""
1240
repo = self._pack_collection.repo
1241
refs = repo._find_text_key_references_from_xml_inventory_lines(
1243
self._text_refs = refs
1244
# during reconcile we:
1245
# - convert unreferenced texts to full texts
1246
# - correct texts which reference a text not copied to be full texts
1247
# - copy all others as-is but with corrected parents.
1248
# - so at this point we don't know enough to decide what becomes a full
1250
self._text_filter = None
1252
def _copy_text_texts(self):
1253
"""generate what texts we should have and then copy."""
1254
self.pb.update("Copying content texts", 3)
1255
# we have three major tasks here:
1256
# 1) generate the ideal index
1257
repo = self._pack_collection.repo
1258
ancestors = dict([(key[0], tuple(ref[0] for ref in refs[0])) for
1259
_1, key, _2, refs in
1260
self.new_pack.revision_index.iter_all_entries()])
1261
ideal_index = repo._generate_text_key_index(self._text_refs, ancestors)
1262
# 2) generate a text_nodes list that contains all the deltas that can
1263
# be used as-is, with corrected parents.
1266
discarded_nodes = []
1267
NULL_REVISION = _mod_revision.NULL_REVISION
1268
text_index_map, text_nodes = self._get_text_nodes()
1269
for node in text_nodes:
1275
ideal_parents = tuple(ideal_index[node[1]])
1277
discarded_nodes.append(node)
1278
self._data_changed = True
1280
if ideal_parents == (NULL_REVISION,):
1282
if ideal_parents == node[3][0]:
1284
ok_nodes.append(node)
1285
elif ideal_parents[0:1] == node[3][0][0:1]:
1286
# the left most parent is the same, or there are no parents
1287
# today. Either way, we can preserve the representation as
1288
# long as we change the refs to be inserted.
1289
self._data_changed = True
1290
ok_nodes.append((node[0], node[1], node[2],
1291
(ideal_parents, node[3][1])))
1292
self._data_changed = True
1294
# Reinsert this text completely
1295
bad_texts.append((node[1], ideal_parents))
1296
self._data_changed = True
1297
# we're finished with some data.
1300
# 3) bulk copy the ok data
1301
total_items, readv_group_iter = self._least_readv_node_readv(ok_nodes)
1302
list(self._copy_nodes_graph(text_index_map, self.new_pack._writer,
1303
self.new_pack.text_index, readv_group_iter, total_items))
1304
# 4) adhoc copy all the other texts.
1305
# We have to topologically insert all texts otherwise we can fail to
1306
# reconcile when parts of a single delta chain are preserved intact,
1307
# and other parts are not. E.g. Discarded->d1->d2->d3. d1 will be
1308
# reinserted, and if d3 has incorrect parents it will also be
1309
# reinserted. If we insert d3 first, d2 is present (as it was bulk
1310
# copied), so we will try to delta, but d2 is not currently able to be
1311
# extracted because it's basis d1 is not present. Topologically sorting
1312
# addresses this. The following generates a sort for all the texts that
1313
# are being inserted without having to reference the entire text key
1314
# space (we only topo sort the revisions, which is smaller).
1315
topo_order = tsort.topo_sort(ancestors)
1316
rev_order = dict(zip(topo_order, range(len(topo_order))))
1317
bad_texts.sort(key=lambda key:rev_order.get(key[0][1], 0))
1318
transaction = repo.get_transaction()
1319
file_id_index = GraphIndexPrefixAdapter(
1320
self.new_pack.text_index,
1322
add_nodes_callback=self.new_pack.text_index.add_nodes)
1323
data_access = _DirectPackAccess(
1324
{self.new_pack.text_index:self.new_pack.access_tuple()})
1325
data_access.set_writer(self.new_pack._writer, self.new_pack.text_index,
1326
self.new_pack.access_tuple())
1327
output_texts = KnitVersionedFiles(
1328
_KnitGraphIndex(self.new_pack.text_index,
1329
add_callback=self.new_pack.text_index.add_nodes,
1330
deltas=True, parents=True, is_locked=repo.is_locked),
1331
data_access=data_access, max_delta_chain=200)
1332
for key, parent_keys in bad_texts:
1333
# We refer to the new pack to delta data being output.
1334
# A possible improvement would be to catch errors on short reads
1335
# and only flush then.
1336
self.new_pack.flush()
1338
for parent_key in parent_keys:
1339
if parent_key[0] != key[0]:
1340
# Graph parents must match the fileid
1341
raise errors.BzrError('Mismatched key parent %r:%r' %
1343
parents.append(parent_key[1])
1344
text_lines = osutils.split_lines(repo.texts.get_record_stream(
1345
[key], 'unordered', True).next().get_bytes_as('fulltext'))
1346
output_texts.add_lines(key, parent_keys, text_lines,
1347
random_id=True, check_content=False)
1348
# 5) check that nothing inserted has a reference outside the keyspace.
1349
missing_text_keys = self.new_pack.text_index._external_references()
1350
if missing_text_keys:
1351
raise errors.BzrCheckError('Reference to missing compression parents %r'
1352
% (missing_text_keys,))
1353
self._log_copied_texts()
1355
def _use_pack(self, new_pack):
1356
"""Override _use_pack to check for reconcile having changed content."""
1357
# XXX: we might be better checking this at the copy time.
1358
original_inventory_keys = set()
1359
inv_index = self._pack_collection.inventory_index.combined_index
1360
for entry in inv_index.iter_all_entries():
1361
original_inventory_keys.add(entry[1])
1362
new_inventory_keys = set()
1363
for entry in new_pack.inventory_index.iter_all_entries():
1364
new_inventory_keys.add(entry[1])
1365
if new_inventory_keys != original_inventory_keys:
1366
self._data_changed = True
1367
return new_pack.data_inserted() and self._data_changed
768
1370
class RepositoryPackCollection(object):
769
1371
"""Management of packs within a repository.
771
1373
:ivar _names: map of {pack_name: (index_size,)}
775
resumed_pack_factory = None
776
normal_packer_class = None
777
optimising_packer_class = None
1376
pack_factory = NewPack
1377
resumed_pack_factory = ResumedPack
779
1379
def __init__(self, repo, transport, index_transport, upload_transport,
780
1380
pack_transport, index_builder_class, index_class,
1665
# These attributes are inherited from the Repository base class. Setting
1666
# them to None ensures that if the constructor is changed to not initialize
1667
# them, or a subclass fails to call the constructor, that an error will
1668
# occur rather than the system working but generating incorrect data.
1669
_commit_builder_class = None
1672
2221
def __init__(self, _format, a_bzrdir, control_files, _commit_builder_class,
1674
MetaDirRepository.__init__(self, _format, a_bzrdir, control_files)
1675
self._commit_builder_class = _commit_builder_class
1676
self._serializer = _serializer
2223
KnitRepository.__init__(self, _format, a_bzrdir, control_files,
2224
_commit_builder_class, _serializer)
2225
index_transport = self._transport.clone('indices')
2226
self._pack_collection = RepositoryPackCollection(self, self._transport,
2228
self._transport.clone('upload'),
2229
self._transport.clone('packs'),
2230
_format.index_builder_class,
2231
_format.index_class,
2232
use_chk_index=self._format.supports_chks,
2234
self.inventories = KnitVersionedFiles(
2235
_KnitGraphIndex(self._pack_collection.inventory_index.combined_index,
2236
add_callback=self._pack_collection.inventory_index.add_callback,
2237
deltas=True, parents=True, is_locked=self.is_locked),
2238
data_access=self._pack_collection.inventory_index.data_access,
2239
max_delta_chain=200)
2240
self.revisions = KnitVersionedFiles(
2241
_KnitGraphIndex(self._pack_collection.revision_index.combined_index,
2242
add_callback=self._pack_collection.revision_index.add_callback,
2243
deltas=False, parents=True, is_locked=self.is_locked,
2244
track_external_parent_refs=True),
2245
data_access=self._pack_collection.revision_index.data_access,
2247
self.signatures = KnitVersionedFiles(
2248
_KnitGraphIndex(self._pack_collection.signature_index.combined_index,
2249
add_callback=self._pack_collection.signature_index.add_callback,
2250
deltas=False, parents=False, is_locked=self.is_locked),
2251
data_access=self._pack_collection.signature_index.data_access,
2253
self.texts = KnitVersionedFiles(
2254
_KnitGraphIndex(self._pack_collection.text_index.combined_index,
2255
add_callback=self._pack_collection.text_index.add_callback,
2256
deltas=True, parents=True, is_locked=self.is_locked),
2257
data_access=self._pack_collection.text_index.data_access,
2258
max_delta_chain=200)
2259
if _format.supports_chks:
2260
# No graph, no compression:- references from chks are between
2261
# different objects not temporal versions of the same; and without
2262
# some sort of temporal structure knit compression will just fail.
2263
self.chk_bytes = KnitVersionedFiles(
2264
_KnitGraphIndex(self._pack_collection.chk_index.combined_index,
2265
add_callback=self._pack_collection.chk_index.add_callback,
2266
deltas=False, parents=False, is_locked=self.is_locked),
2267
data_access=self._pack_collection.chk_index.data_access,
2270
self.chk_bytes = None
2271
# True when the repository object is 'write locked' (as opposed to the
2272
# physical lock only taken out around changes to the pack-names list.)
2273
# Another way to represent this would be a decorator around the control
2274
# files object that presents logical locks as physical ones - if this
2275
# gets ugly consider that alternative design. RBC 20071011
2276
self._write_lock_count = 0
2277
self._transaction = None
2279
self._reconcile_does_inventory_gc = True
1677
2280
self._reconcile_fixes_text_parents = True
1678
if self._format.supports_external_lookups:
1679
self._unstacked_provider = graph.CachingParentsProvider(
1680
self._make_parents_provider_unstacked())
1682
self._unstacked_provider = graph.CachingParentsProvider(self)
1683
self._unstacked_provider.disable_cache()
2281
self._reconcile_backsup_inventory = False
1686
def _all_revision_ids(self):
1687
"""See Repository.all_revision_ids()."""
1688
return [key[0] for key in self.revisions.keys()]
2283
def _warn_if_deprecated(self, branch=None):
2284
# This class isn't deprecated, but one sub-format is
2285
if isinstance(self._format, RepositoryFormatKnitPack5RichRootBroken):
2286
super(KnitPackRepository, self)._warn_if_deprecated(branch)
1690
2288
def _abort_write_group(self):
1691
2289
self.revisions._index._key_dependencies.clear()
1692
2290
self._pack_collection._abort_write_group()
2292
def _get_source(self, to_format):
2293
if to_format.network_name() == self._format.network_name():
2294
return KnitPackStreamSource(self, to_format)
2295
return super(KnitPackRepository, self)._get_source(to_format)
1694
2297
def _make_parents_provider(self):
1695
if not self._format.supports_external_lookups:
1696
return self._unstacked_provider
1697
return graph.StackedParentsProvider(_LazyListJoin(
1698
[self._unstacked_provider], self._fallback_repositories))
2298
return graph.CachingParentsProvider(self)
1700
2300
def _refresh_data(self):
1701
2301
if not self.is_locked():
1703
2303
self._pack_collection.reload_pack_names()
1704
self._unstacked_provider.disable_cache()
1705
self._unstacked_provider.enable_cache()
1707
2305
def _start_write_group(self):
1708
2306
self._pack_collection._start_write_group()
1835
2417
self.control_files.unlock()
1837
2419
if not self.is_locked():
1838
self._unstacked_provider.disable_cache()
1839
2420
for repo in self._fallback_repositories:
1843
class RepositoryFormatPack(MetaDirVersionedFileRepositoryFormat):
2424
class KnitPackStreamSource(StreamSource):
2425
"""A StreamSource used to transfer data between same-format KnitPack repos.
2427
This source assumes:
2428
1) Same serialization format for all objects
2429
2) Same root information
2430
3) XML format inventories
2431
4) Atomic inserts (so we can stream inventory texts before text
2436
def __init__(self, from_repository, to_format):
2437
super(KnitPackStreamSource, self).__init__(from_repository, to_format)
2438
self._text_keys = None
2439
self._text_fetch_order = 'unordered'
2441
def _get_filtered_inv_stream(self, revision_ids):
2442
from_repo = self.from_repository
2443
parent_ids = from_repo._find_parent_ids_of_revisions(revision_ids)
2444
parent_keys = [(p,) for p in parent_ids]
2445
find_text_keys = from_repo._find_text_key_references_from_xml_inventory_lines
2446
parent_text_keys = set(find_text_keys(
2447
from_repo._inventory_xml_lines_for_keys(parent_keys)))
2448
content_text_keys = set()
2449
knit = KnitVersionedFiles(None, None)
2450
factory = KnitPlainFactory()
2451
def find_text_keys_from_content(record):
2452
if record.storage_kind not in ('knit-delta-gz', 'knit-ft-gz'):
2453
raise ValueError("Unknown content storage kind for"
2454
" inventory text: %s" % (record.storage_kind,))
2455
# It's a knit record, it has a _raw_record field (even if it was
2456
# reconstituted from a network stream).
2457
raw_data = record._raw_record
2458
# read the entire thing
2459
revision_id = record.key[-1]
2460
content, _ = knit._parse_record(revision_id, raw_data)
2461
if record.storage_kind == 'knit-delta-gz':
2462
line_iterator = factory.get_linedelta_content(content)
2463
elif record.storage_kind == 'knit-ft-gz':
2464
line_iterator = factory.get_fulltext_content(content)
2465
content_text_keys.update(find_text_keys(
2466
[(line, revision_id) for line in line_iterator]))
2467
revision_keys = [(r,) for r in revision_ids]
2468
def _filtered_inv_stream():
2469
source_vf = from_repo.inventories
2470
stream = source_vf.get_record_stream(revision_keys,
2472
for record in stream:
2473
if record.storage_kind == 'absent':
2474
raise errors.NoSuchRevision(from_repo, record.key)
2475
find_text_keys_from_content(record)
2477
self._text_keys = content_text_keys - parent_text_keys
2478
return ('inventories', _filtered_inv_stream())
2480
def _get_text_stream(self):
2481
# Note: We know we don't have to handle adding root keys, because both
2482
# the source and target are the identical network name.
2483
text_stream = self.from_repository.texts.get_record_stream(
2484
self._text_keys, self._text_fetch_order, False)
2485
return ('texts', text_stream)
2487
def get_stream(self, search):
2488
revision_ids = search.get_keys()
2489
for stream_info in self._fetch_revision_texts(revision_ids):
2491
self._revision_keys = [(rev_id,) for rev_id in revision_ids]
2492
yield self._get_filtered_inv_stream(revision_ids)
2493
yield self._get_text_stream()
2497
class RepositoryFormatPack(MetaDirRepositoryFormat):
1844
2498
"""Format logic for pack structured repositories.
1846
2500
This repository format has:
1920
2570
_serializer=self._serializer)
1923
class RetryPackOperations(errors.RetryWithNewPacks):
1924
"""Raised when we are packing and we find a missing file.
1926
Meant as a signaling exception, to tell the RepositoryPackCollection.pack
1927
code it should try again.
1930
internal_error = True
1932
_fmt = ("Pack files have changed, reload and try pack again."
1933
" context: %(context)s %(orig_error)s")
1936
class _DirectPackAccess(object):
1937
"""Access to data in one or more packs with less translation."""
1939
def __init__(self, index_to_packs, reload_func=None, flush_func=None):
1940
"""Create a _DirectPackAccess object.
1942
:param index_to_packs: A dict mapping index objects to the transport
1943
and file names for obtaining data.
1944
:param reload_func: A function to call if we determine that the pack
1945
files have moved and we need to reload our caches. See
1946
bzrlib.repo_fmt.pack_repo.AggregateIndex for more details.
1948
self._container_writer = None
1949
self._write_index = None
1950
self._indices = index_to_packs
1951
self._reload_func = reload_func
1952
self._flush_func = flush_func
1954
def add_raw_records(self, key_sizes, raw_data):
1955
"""Add raw knit bytes to a storage area.
1957
The data is spooled to the container writer in one bytes-record per
1960
:param sizes: An iterable of tuples containing the key and size of each
1962
:param raw_data: A bytestring containing the data.
1963
:return: A list of memos to retrieve the record later. Each memo is an
1964
opaque index memo. For _DirectPackAccess the memo is (index, pos,
1965
length), where the index field is the write_index object supplied
1966
to the PackAccess object.
1968
if type(raw_data) is not str:
1969
raise AssertionError(
1970
'data must be plain bytes was %s' % type(raw_data))
1973
for key, size in key_sizes:
1974
p_offset, p_length = self._container_writer.add_bytes_record(
1975
raw_data[offset:offset+size], [])
1977
result.append((self._write_index, p_offset, p_length))
1981
"""Flush pending writes on this access object.
1983
This will flush any buffered writes to a NewPack.
1985
if self._flush_func is not None:
1988
def get_raw_records(self, memos_for_retrieval):
1989
"""Get the raw bytes for a records.
1991
:param memos_for_retrieval: An iterable containing the (index, pos,
1992
length) memo for retrieving the bytes. The Pack access method
1993
looks up the pack to use for a given record in its index_to_pack
1995
:return: An iterator over the bytes of the records.
1997
# first pass, group into same-index requests
1999
current_index = None
2000
for (index, offset, length) in memos_for_retrieval:
2001
if current_index == index:
2002
current_list.append((offset, length))
2004
if current_index is not None:
2005
request_lists.append((current_index, current_list))
2006
current_index = index
2007
current_list = [(offset, length)]
2008
# handle the last entry
2009
if current_index is not None:
2010
request_lists.append((current_index, current_list))
2011
for index, offsets in request_lists:
2013
transport, path = self._indices[index]
2015
# A KeyError here indicates that someone has triggered an index
2016
# reload, and this index has gone missing, we need to start
2018
if self._reload_func is None:
2019
# If we don't have a _reload_func there is nothing that can
2022
raise errors.RetryWithNewPacks(index,
2023
reload_occurred=True,
2024
exc_info=sys.exc_info())
2026
reader = pack.make_readv_reader(transport, path, offsets)
2027
for names, read_func in reader.iter_records():
2028
yield read_func(None)
2029
except errors.NoSuchFile:
2030
# A NoSuchFile error indicates that a pack file has gone
2031
# missing on disk, we need to trigger a reload, and start over.
2032
if self._reload_func is None:
2034
raise errors.RetryWithNewPacks(transport.abspath(path),
2035
reload_occurred=False,
2036
exc_info=sys.exc_info())
2038
def set_writer(self, writer, index, transport_packname):
2039
"""Set a writer to use for adding data."""
2040
if index is not None:
2041
self._indices[index] = transport_packname
2042
self._container_writer = writer
2043
self._write_index = index
2045
def reload_or_raise(self, retry_exc):
2046
"""Try calling the reload function, or re-raise the original exception.
2048
This should be called after _DirectPackAccess raises a
2049
RetryWithNewPacks exception. This function will handle the common logic
2050
of determining when the error is fatal versus being temporary.
2051
It will also make sure that the original exception is raised, rather
2052
than the RetryWithNewPacks exception.
2054
If this function returns, then the calling function should retry
2055
whatever operation was being performed. Otherwise an exception will
2058
:param retry_exc: A RetryWithNewPacks exception.
2061
if self._reload_func is None:
2063
elif not self._reload_func():
2064
# The reload claimed that nothing changed
2065
if not retry_exc.reload_occurred:
2066
# If there wasn't an earlier reload, then we really were
2067
# expecting to find changes. We didn't find them, so this is a
2071
exc_class, exc_value, exc_traceback = retry_exc.exc_info
2072
raise exc_class, exc_value, exc_traceback
2573
class RepositoryFormatKnitPack1(RepositoryFormatPack):
2574
"""A no-subtrees parameterized Pack repository.
2576
This format was introduced in 0.92.
2579
repository_class = KnitPackRepository
2580
_commit_builder_class = PackCommitBuilder
2582
def _serializer(self):
2583
return xml5.serializer_v5
2584
# What index classes to use
2585
index_builder_class = InMemoryGraphIndex
2586
index_class = GraphIndex
2588
def _get_matching_bzrdir(self):
2589
return bzrdir.format_registry.make_bzrdir('pack-0.92')
2591
def _ignore_setting_bzrdir(self, format):
2594
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2596
def get_format_string(self):
2597
"""See RepositoryFormat.get_format_string()."""
2598
return "Bazaar pack repository format 1 (needs bzr 0.92)\n"
2600
def get_format_description(self):
2601
"""See RepositoryFormat.get_format_description()."""
2602
return "Packs containing knits without subtree support"
2605
class RepositoryFormatKnitPack3(RepositoryFormatPack):
2606
"""A subtrees parameterized Pack repository.
2608
This repository format uses the xml7 serializer to get:
2609
- support for recording full info about the tree root
2610
- support for recording tree-references
2612
This format was introduced in 0.92.
2615
repository_class = KnitPackRepository
2616
_commit_builder_class = PackRootCommitBuilder
2617
rich_root_data = True
2618
supports_tree_reference = True
2620
def _serializer(self):
2621
return xml7.serializer_v7
2622
# What index classes to use
2623
index_builder_class = InMemoryGraphIndex
2624
index_class = GraphIndex
2626
def _get_matching_bzrdir(self):
2627
return bzrdir.format_registry.make_bzrdir(
2628
'pack-0.92-subtree')
2630
def _ignore_setting_bzrdir(self, format):
2633
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2635
def get_format_string(self):
2636
"""See RepositoryFormat.get_format_string()."""
2637
return "Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n"
2639
def get_format_description(self):
2640
"""See RepositoryFormat.get_format_description()."""
2641
return "Packs containing knits with subtree support\n"
2644
class RepositoryFormatKnitPack4(RepositoryFormatPack):
2645
"""A rich-root, no subtrees parameterized Pack repository.
2647
This repository format uses the xml6 serializer to get:
2648
- support for recording full info about the tree root
2650
This format was introduced in 1.0.
2653
repository_class = KnitPackRepository
2654
_commit_builder_class = PackRootCommitBuilder
2655
rich_root_data = True
2656
supports_tree_reference = False
2658
def _serializer(self):
2659
return xml6.serializer_v6
2660
# What index classes to use
2661
index_builder_class = InMemoryGraphIndex
2662
index_class = GraphIndex
2664
def _get_matching_bzrdir(self):
2665
return bzrdir.format_registry.make_bzrdir(
2668
def _ignore_setting_bzrdir(self, format):
2671
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2673
def get_format_string(self):
2674
"""See RepositoryFormat.get_format_string()."""
2675
return ("Bazaar pack repository format 1 with rich root"
2676
" (needs bzr 1.0)\n")
2678
def get_format_description(self):
2679
"""See RepositoryFormat.get_format_description()."""
2680
return "Packs containing knits with rich root support\n"
2683
class RepositoryFormatKnitPack5(RepositoryFormatPack):
2684
"""Repository that supports external references to allow stacking.
2688
Supports external lookups, which results in non-truncated ghosts after
2689
reconcile compared to pack-0.92 formats.
2692
repository_class = KnitPackRepository
2693
_commit_builder_class = PackCommitBuilder
2694
supports_external_lookups = True
2695
# What index classes to use
2696
index_builder_class = InMemoryGraphIndex
2697
index_class = GraphIndex
2700
def _serializer(self):
2701
return xml5.serializer_v5
2703
def _get_matching_bzrdir(self):
2704
return bzrdir.format_registry.make_bzrdir('1.6')
2706
def _ignore_setting_bzrdir(self, format):
2709
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2711
def get_format_string(self):
2712
"""See RepositoryFormat.get_format_string()."""
2713
return "Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n"
2715
def get_format_description(self):
2716
"""See RepositoryFormat.get_format_description()."""
2717
return "Packs 5 (adds stacking support, requires bzr 1.6)"
2720
class RepositoryFormatKnitPack5RichRoot(RepositoryFormatPack):
2721
"""A repository with rich roots and stacking.
2723
New in release 1.6.1.
2725
Supports stacking on other repositories, allowing data to be accessed
2726
without being stored locally.
2729
repository_class = KnitPackRepository
2730
_commit_builder_class = PackRootCommitBuilder
2731
rich_root_data = True
2732
supports_tree_reference = False # no subtrees
2733
supports_external_lookups = True
2734
# What index classes to use
2735
index_builder_class = InMemoryGraphIndex
2736
index_class = GraphIndex
2739
def _serializer(self):
2740
return xml6.serializer_v6
2742
def _get_matching_bzrdir(self):
2743
return bzrdir.format_registry.make_bzrdir(
2746
def _ignore_setting_bzrdir(self, format):
2749
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2751
def get_format_string(self):
2752
"""See RepositoryFormat.get_format_string()."""
2753
return "Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n"
2755
def get_format_description(self):
2756
return "Packs 5 rich-root (adds stacking support, requires bzr 1.6.1)"
2759
class RepositoryFormatKnitPack5RichRootBroken(RepositoryFormatPack):
2760
"""A repository with rich roots and external references.
2764
Supports external lookups, which results in non-truncated ghosts after
2765
reconcile compared to pack-0.92 formats.
2767
This format was deprecated because the serializer it uses accidentally
2768
supported subtrees, when the format was not intended to. This meant that
2769
someone could accidentally fetch from an incorrect repository.
2772
repository_class = KnitPackRepository
2773
_commit_builder_class = PackRootCommitBuilder
2774
rich_root_data = True
2775
supports_tree_reference = False # no subtrees
2777
supports_external_lookups = True
2778
# What index classes to use
2779
index_builder_class = InMemoryGraphIndex
2780
index_class = GraphIndex
2783
def _serializer(self):
2784
return xml7.serializer_v7
2786
def _get_matching_bzrdir(self):
2787
matching = bzrdir.format_registry.make_bzrdir(
2789
matching.repository_format = self
2792
def _ignore_setting_bzrdir(self, format):
2795
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2797
def get_format_string(self):
2798
"""See RepositoryFormat.get_format_string()."""
2799
return "Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n"
2801
def get_format_description(self):
2802
return ("Packs 5 rich-root (adds stacking support, requires bzr 1.6)"
2806
class RepositoryFormatKnitPack6(RepositoryFormatPack):
2807
"""A repository with stacking and btree indexes,
2808
without rich roots or subtrees.
2810
This is equivalent to pack-1.6 with B+Tree indices.
2813
repository_class = KnitPackRepository
2814
_commit_builder_class = PackCommitBuilder
2815
supports_external_lookups = True
2816
# What index classes to use
2817
index_builder_class = BTreeBuilder
2818
index_class = BTreeGraphIndex
2821
def _serializer(self):
2822
return xml5.serializer_v5
2824
def _get_matching_bzrdir(self):
2825
return bzrdir.format_registry.make_bzrdir('1.9')
2827
def _ignore_setting_bzrdir(self, format):
2830
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2832
def get_format_string(self):
2833
"""See RepositoryFormat.get_format_string()."""
2834
return "Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n"
2836
def get_format_description(self):
2837
"""See RepositoryFormat.get_format_description()."""
2838
return "Packs 6 (uses btree indexes, requires bzr 1.9)"
2841
class RepositoryFormatKnitPack6RichRoot(RepositoryFormatPack):
2842
"""A repository with rich roots, no subtrees, stacking and btree indexes.
2844
1.6-rich-root with B+Tree indices.
2847
repository_class = KnitPackRepository
2848
_commit_builder_class = PackRootCommitBuilder
2849
rich_root_data = True
2850
supports_tree_reference = False # no subtrees
2851
supports_external_lookups = True
2852
# What index classes to use
2853
index_builder_class = BTreeBuilder
2854
index_class = BTreeGraphIndex
2857
def _serializer(self):
2858
return xml6.serializer_v6
2860
def _get_matching_bzrdir(self):
2861
return bzrdir.format_registry.make_bzrdir(
2864
def _ignore_setting_bzrdir(self, format):
2867
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2869
def get_format_string(self):
2870
"""See RepositoryFormat.get_format_string()."""
2871
return "Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n"
2873
def get_format_description(self):
2874
return "Packs 6 rich-root (uses btree indexes, requires bzr 1.9)"
2877
class RepositoryFormatPackDevelopment2Subtree(RepositoryFormatPack):
2878
"""A subtrees development repository.
2880
This format should be retained until the second release after bzr 1.7.
2882
1.6.1-subtree[as it might have been] with B+Tree indices.
2884
This is [now] retained until we have a CHK based subtree format in
2888
repository_class = KnitPackRepository
2889
_commit_builder_class = PackRootCommitBuilder
2890
rich_root_data = True
2891
supports_tree_reference = True
2892
supports_external_lookups = True
2893
# What index classes to use
2894
index_builder_class = BTreeBuilder
2895
index_class = BTreeGraphIndex
2898
def _serializer(self):
2899
return xml7.serializer_v7
2901
def _get_matching_bzrdir(self):
2902
return bzrdir.format_registry.make_bzrdir(
2903
'development-subtree')
2905
def _ignore_setting_bzrdir(self, format):
2908
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2910
def get_format_string(self):
2911
"""See RepositoryFormat.get_format_string()."""
2912
return ("Bazaar development format 2 with subtree support "
2913
"(needs bzr.dev from before 1.8)\n")
2915
def get_format_description(self):
2916
"""See RepositoryFormat.get_format_description()."""
2917
return ("Development repository format, currently the same as "
2918
"1.6.1-subtree with B+Tree indices.\n")
added
removed
bzrlib/repofmt/pack_repo.py
