828
741
Sets self._text_filter appropriately.
830
# select inventory keys
831
inv_keys = self._revision_keys # currently the same keyspace, and note that
832
# querying for keys here could introduce a bug where an inventory item
833
# is missed, so do not change it to query separately without cross
834
# checking like the text key check below.
835
inventory_index_map, inventory_indices = self._pack_map_and_index_list(
837
inv_nodes = self._index_contents(inventory_indices, inv_keys)
838
# copy inventory keys and adjust values
839
# XXX: Should be a helper function to allow different inv representation
841
self.pb.update("Copying inventory texts", 2)
842
total_items, readv_group_iter = self._least_readv_node_readv(inv_nodes)
843
# Only grab the output lines if we will be processing them
844
output_lines = bool(self.revision_ids)
845
inv_lines = self._copy_nodes_graph(inventory_index_map,
846
self.new_pack._writer, self.new_pack.inventory_index,
847
readv_group_iter, total_items, output_lines=output_lines)
848
if self.revision_ids:
849
self._process_inventory_lines(inv_lines)
851
# eat the iterator to cause it to execute.
853
self._text_filter = None
854
if 'pack' in debug.debug_flags:
855
mutter('%s: create_pack: inventories copied: %s%s %d items t+%6.3fs',
856
time.ctime(), self._pack_collection._upload_transport.base,
857
self.new_pack.random_name,
858
self.new_pack.inventory_index.key_count(),
859
time.time() - self.new_pack.start_time)
743
raise NotImplementedError(self._copy_inventory_texts)
861
745
def _copy_text_texts(self):
863
text_index_map, text_nodes = self._get_text_nodes()
864
if self._text_filter is not None:
865
# We could return the keys copied as part of the return value from
866
# _copy_nodes_graph but this doesn't work all that well with the
867
# need to get line output too, so we check separately, and as we're
868
# going to buffer everything anyway, we check beforehand, which
869
# saves reading knit data over the wire when we know there are
871
text_nodes = set(text_nodes)
872
present_text_keys = set(_node[1] for _node in text_nodes)
873
missing_text_keys = set(self._text_filter) - present_text_keys
874
if missing_text_keys:
875
# TODO: raise a specific error that can handle many missing
877
mutter("missing keys during fetch: %r", missing_text_keys)
878
a_missing_key = missing_text_keys.pop()
879
raise errors.RevisionNotPresent(a_missing_key[1],
881
# copy text keys and adjust values
882
self.pb.update("Copying content texts", 3)
883
total_items, readv_group_iter = self._least_readv_node_readv(text_nodes)
884
list(self._copy_nodes_graph(text_index_map, self.new_pack._writer,
885
self.new_pack.text_index, readv_group_iter, total_items))
886
self._log_copied_texts()
746
raise NotImplementedError(self._copy_text_texts)
888
748
def _create_pack_from_packs(self):
889
self.pb.update("Opening pack", 0, 5)
890
self.new_pack = self.open_pack()
891
new_pack = self.new_pack
892
# buffer data - we won't be reading-back during the pack creation and
893
# this makes a significant difference on sftp pushes.
894
new_pack.set_write_cache_size(1024*1024)
895
if 'pack' in debug.debug_flags:
896
plain_pack_list = ['%s%s' % (a_pack.pack_transport.base, a_pack.name)
897
for a_pack in self.packs]
898
if self.revision_ids is not None:
899
rev_count = len(self.revision_ids)
902
mutter('%s: create_pack: creating pack from source packs: '
903
'%s%s %s revisions wanted %s t=0',
904
time.ctime(), self._pack_collection._upload_transport.base, new_pack.random_name,
905
plain_pack_list, rev_count)
906
self._copy_revision_texts()
907
self._copy_inventory_texts()
908
self._copy_text_texts()
909
# select signature keys
910
signature_filter = self._revision_keys # same keyspace
911
signature_index_map, signature_indices = self._pack_map_and_index_list(
913
signature_nodes = self._index_contents(signature_indices,
915
# copy signature keys and adjust values
916
self.pb.update("Copying signature texts", 4)
917
self._copy_nodes(signature_nodes, signature_index_map, new_pack._writer,
918
new_pack.signature_index)
919
if 'pack' in debug.debug_flags:
920
mutter('%s: create_pack: revision signatures copied: %s%s %d items t+%6.3fs',
921
time.ctime(), self._pack_collection._upload_transport.base, new_pack.random_name,
922
new_pack.signature_index.key_count(),
923
time.time() - new_pack.start_time)
925
# NB XXX: how to check CHK references are present? perhaps by yielding
926
# the items? How should that interact with stacked repos?
927
if new_pack.chk_index is not None:
929
if 'pack' in debug.debug_flags:
930
mutter('%s: create_pack: chk content copied: %s%s %d items t+%6.3fs',
931
time.ctime(), self._pack_collection._upload_transport.base,
932
new_pack.random_name,
933
new_pack.chk_index.key_count(),
934
time.time() - new_pack.start_time)
935
new_pack._check_references()
936
if not self._use_pack(new_pack):
939
self.pb.update("Finishing pack", 5)
941
self._pack_collection.allocate(new_pack)
944
def _copy_chks(self, refs=None):
945
# XXX: Todo, recursive follow-pointers facility when fetching some
947
chk_index_map, chk_indices = self._pack_map_and_index_list(
949
chk_nodes = self._index_contents(chk_indices, refs)
951
# TODO: This isn't strictly tasteful as we are accessing some private
952
# variables (_serializer). Perhaps a better way would be to have
953
# Repository._deserialise_chk_node()
954
search_key_func = chk_map.search_key_registry.get(
955
self._pack_collection.repo._serializer.search_key_name)
956
def accumlate_refs(lines):
957
# XXX: move to a generic location
959
bytes = ''.join(lines)
960
node = chk_map._deserialise(bytes, ("unknown",), search_key_func)
961
new_refs.update(node.refs())
962
self._copy_nodes(chk_nodes, chk_index_map, self.new_pack._writer,
963
self.new_pack.chk_index, output_lines=accumlate_refs)
966
def _copy_nodes(self, nodes, index_map, writer, write_index,
968
"""Copy knit nodes between packs with no graph references.
970
:param output_lines: Output full texts of copied items.
972
pb = ui.ui_factory.nested_progress_bar()
974
return self._do_copy_nodes(nodes, index_map, writer,
975
write_index, pb, output_lines=output_lines)
979
def _do_copy_nodes(self, nodes, index_map, writer, write_index, pb,
981
# for record verification
982
knit = KnitVersionedFiles(None, None)
983
# plan a readv on each source pack:
985
nodes = sorted(nodes)
986
# how to map this into knit.py - or knit.py into this?
987
# we don't want the typical knit logic, we want grouping by pack
988
# at this point - perhaps a helper library for the following code
989
# duplication points?
991
for index, key, value in nodes:
992
if index not in request_groups:
993
request_groups[index] = []
994
request_groups[index].append((key, value))
996
pb.update("Copied record", record_index, len(nodes))
997
for index, items in request_groups.iteritems():
998
pack_readv_requests = []
999
for key, value in items:
1000
# ---- KnitGraphIndex.get_position
1001
bits = value[1:].split(' ')
1002
offset, length = int(bits[0]), int(bits[1])
1003
pack_readv_requests.append((offset, length, (key, value[0])))
1004
# linear scan up the pack
1005
pack_readv_requests.sort()
1007
pack_obj = index_map[index]
1008
transport, path = pack_obj.access_tuple()
1010
reader = pack.make_readv_reader(transport, path,
1011
[offset[0:2] for offset in pack_readv_requests])
1012
except errors.NoSuchFile:
1013
if self._reload_func is not None:
1016
for (names, read_func), (_1, _2, (key, eol_flag)) in \
1017
izip(reader.iter_records(), pack_readv_requests):
1018
raw_data = read_func(None)
1019
# check the header only
1020
if output_lines is not None:
1021
output_lines(knit._parse_record(key[-1], raw_data)[0])
1023
df, _ = knit._parse_record_header(key, raw_data)
1025
pos, size = writer.add_bytes_record(raw_data, names)
1026
write_index.add_node(key, eol_flag + "%d %d" % (pos, size))
1027
pb.update("Copied record", record_index)
1030
def _copy_nodes_graph(self, index_map, writer, write_index,
1031
readv_group_iter, total_items, output_lines=False):
1032
"""Copy knit nodes between packs.
1034
:param output_lines: Return lines present in the copied data as
1035
an iterator of line,version_id.
1037
pb = ui.ui_factory.nested_progress_bar()
1039
for result in self._do_copy_nodes_graph(index_map, writer,
1040
write_index, output_lines, pb, readv_group_iter, total_items):
1043
# Python 2.4 does not permit try:finally: in a generator.
1049
def _do_copy_nodes_graph(self, index_map, writer, write_index,
1050
output_lines, pb, readv_group_iter, total_items):
1051
# for record verification
1052
knit = KnitVersionedFiles(None, None)
1053
# for line extraction when requested (inventories only)
1055
factory = KnitPlainFactory()
1057
pb.update("Copied record", record_index, total_items)
1058
for index, readv_vector, node_vector in readv_group_iter:
1060
pack_obj = index_map[index]
1061
transport, path = pack_obj.access_tuple()
1063
reader = pack.make_readv_reader(transport, path, readv_vector)
1064
except errors.NoSuchFile:
1065
if self._reload_func is not None:
1068
for (names, read_func), (key, eol_flag, references) in \
1069
izip(reader.iter_records(), node_vector):
1070
raw_data = read_func(None)
1072
# read the entire thing
1073
content, _ = knit._parse_record(key[-1], raw_data)
1074
if len(references[-1]) == 0:
1075
line_iterator = factory.get_fulltext_content(content)
1077
line_iterator = factory.get_linedelta_content(content)
1078
for line in line_iterator:
1081
# check the header only
1082
df, _ = knit._parse_record_header(key, raw_data)
1084
pos, size = writer.add_bytes_record(raw_data, names)
1085
write_index.add_node(key, eol_flag + "%d %d" % (pos, size), references)
1086
pb.update("Copied record", record_index)
1089
def _get_text_nodes(self):
1090
text_index_map, text_indices = self._pack_map_and_index_list(
1092
return text_index_map, self._index_contents(text_indices,
1095
def _least_readv_node_readv(self, nodes):
1096
"""Generate request groups for nodes using the least readv's.
1098
:param nodes: An iterable of graph index nodes.
1099
:return: Total node count and an iterator of the data needed to perform
1100
readvs to obtain the data for nodes. Each item yielded by the
1101
iterator is a tuple with:
1102
index, readv_vector, node_vector. readv_vector is a list ready to
1103
hand to the transport readv method, and node_vector is a list of
1104
(key, eol_flag, references) for the node retrieved by the
1105
matching readv_vector.
1107
# group by pack so we do one readv per pack
1108
nodes = sorted(nodes)
1111
for index, key, value, references in nodes:
1112
if index not in request_groups:
1113
request_groups[index] = []
1114
request_groups[index].append((key, value, references))
1116
for index, items in request_groups.iteritems():
1117
pack_readv_requests = []
1118
for key, value, references in items:
1119
# ---- KnitGraphIndex.get_position
1120
bits = value[1:].split(' ')
1121
offset, length = int(bits[0]), int(bits[1])
1122
pack_readv_requests.append(
1123
((offset, length), (key, value[0], references)))
1124
# linear scan up the pack to maximum range combining.
1125
pack_readv_requests.sort()
1126
# split out the readv and the node data.
1127
pack_readv = [readv for readv, node in pack_readv_requests]
1128
node_vector = [node for readv, node in pack_readv_requests]
1129
result.append((index, pack_readv, node_vector))
1130
return total, result
749
raise NotImplementedError(self._create_pack_from_packs)
1132
751
def _log_copied_texts(self):
1133
752
if 'pack' in debug.debug_flags:
1165
765
return new_pack.data_inserted()
1168
class OptimisingPacker(Packer):
1169
"""A packer which spends more time to create better disk layouts."""
1171
def _revision_node_readv(self, revision_nodes):
1172
"""Return the total revisions and the readv's to issue.
1174
This sort places revisions in topological order with the ancestors
1177
:param revision_nodes: The revision index contents for the packs being
1178
incorporated into the new pack.
1179
:return: As per _least_readv_node_readv.
1181
# build an ancestors dict
1184
for index, key, value, references in revision_nodes:
1185
ancestors[key] = references[0]
1186
by_key[key] = (index, value, references)
1187
order = tsort.topo_sort(ancestors)
1189
# Single IO is pathological, but it will work as a starting point.
1191
for key in reversed(order):
1192
index, value, references = by_key[key]
1193
# ---- KnitGraphIndex.get_position
1194
bits = value[1:].split(' ')
1195
offset, length = int(bits[0]), int(bits[1])
1197
(index, [(offset, length)], [(key, value[0], references)]))
1198
# TODO: combine requests in the same index that are in ascending order.
1199
return total, requests
1201
def open_pack(self):
1202
"""Open a pack for the pack we are creating."""
1203
new_pack = super(OptimisingPacker, self).open_pack()
1204
# Turn on the optimization flags for all the index builders.
1205
new_pack.revision_index.set_optimize(for_size=True)
1206
new_pack.inventory_index.set_optimize(for_size=True)
1207
new_pack.text_index.set_optimize(for_size=True)
1208
new_pack.signature_index.set_optimize(for_size=True)
1212
class ReconcilePacker(Packer):
1213
"""A packer which regenerates indices etc as it copies.
1215
This is used by ``bzr reconcile`` to cause parent text pointers to be
1219
def _extra_init(self):
1220
self._data_changed = False
1222
def _process_inventory_lines(self, inv_lines):
1223
"""Generate a text key reference map rather for reconciling with."""
1224
repo = self._pack_collection.repo
1225
refs = repo._find_text_key_references_from_xml_inventory_lines(
1227
self._text_refs = refs
1228
# during reconcile we:
1229
# - convert unreferenced texts to full texts
1230
# - correct texts which reference a text not copied to be full texts
1231
# - copy all others as-is but with corrected parents.
1232
# - so at this point we don't know enough to decide what becomes a full
1234
self._text_filter = None
1236
def _copy_text_texts(self):
1237
"""generate what texts we should have and then copy."""
1238
self.pb.update("Copying content texts", 3)
1239
# we have three major tasks here:
1240
# 1) generate the ideal index
1241
repo = self._pack_collection.repo
1242
ancestors = dict([(key[0], tuple(ref[0] for ref in refs[0])) for
1243
_1, key, _2, refs in
1244
self.new_pack.revision_index.iter_all_entries()])
1245
ideal_index = repo._generate_text_key_index(self._text_refs, ancestors)
1246
# 2) generate a text_nodes list that contains all the deltas that can
1247
# be used as-is, with corrected parents.
1250
discarded_nodes = []
1251
NULL_REVISION = _mod_revision.NULL_REVISION
1252
text_index_map, text_nodes = self._get_text_nodes()
1253
for node in text_nodes:
1259
ideal_parents = tuple(ideal_index[node[1]])
1261
discarded_nodes.append(node)
1262
self._data_changed = True
1264
if ideal_parents == (NULL_REVISION,):
1266
if ideal_parents == node[3][0]:
1268
ok_nodes.append(node)
1269
elif ideal_parents[0:1] == node[3][0][0:1]:
1270
# the left most parent is the same, or there are no parents
1271
# today. Either way, we can preserve the representation as
1272
# long as we change the refs to be inserted.
1273
self._data_changed = True
1274
ok_nodes.append((node[0], node[1], node[2],
1275
(ideal_parents, node[3][1])))
1276
self._data_changed = True
1278
# Reinsert this text completely
1279
bad_texts.append((node[1], ideal_parents))
1280
self._data_changed = True
1281
# we're finished with some data.
1284
# 3) bulk copy the ok data
1285
total_items, readv_group_iter = self._least_readv_node_readv(ok_nodes)
1286
list(self._copy_nodes_graph(text_index_map, self.new_pack._writer,
1287
self.new_pack.text_index, readv_group_iter, total_items))
1288
# 4) adhoc copy all the other texts.
1289
# We have to topologically insert all texts otherwise we can fail to
1290
# reconcile when parts of a single delta chain are preserved intact,
1291
# and other parts are not. E.g. Discarded->d1->d2->d3. d1 will be
1292
# reinserted, and if d3 has incorrect parents it will also be
1293
# reinserted. If we insert d3 first, d2 is present (as it was bulk
1294
# copied), so we will try to delta, but d2 is not currently able to be
1295
# extracted because its basis d1 is not present. Topologically sorting
1296
# addresses this. The following generates a sort for all the texts that
1297
# are being inserted without having to reference the entire text key
1298
# space (we only topo sort the revisions, which is smaller).
1299
topo_order = tsort.topo_sort(ancestors)
1300
rev_order = dict(zip(topo_order, range(len(topo_order))))
1301
bad_texts.sort(key=lambda key:rev_order.get(key[0][1], 0))
1302
transaction = repo.get_transaction()
1303
file_id_index = GraphIndexPrefixAdapter(
1304
self.new_pack.text_index,
1306
add_nodes_callback=self.new_pack.text_index.add_nodes)
1307
data_access = _DirectPackAccess(
1308
{self.new_pack.text_index:self.new_pack.access_tuple()})
1309
data_access.set_writer(self.new_pack._writer, self.new_pack.text_index,
1310
self.new_pack.access_tuple())
1311
output_texts = KnitVersionedFiles(
1312
_KnitGraphIndex(self.new_pack.text_index,
1313
add_callback=self.new_pack.text_index.add_nodes,
1314
deltas=True, parents=True, is_locked=repo.is_locked),
1315
data_access=data_access, max_delta_chain=200)
1316
for key, parent_keys in bad_texts:
1317
# We refer to the new pack to delta data being output.
1318
# A possible improvement would be to catch errors on short reads
1319
# and only flush then.
1320
self.new_pack.flush()
1322
for parent_key in parent_keys:
1323
if parent_key[0] != key[0]:
1324
# Graph parents must match the fileid
1325
raise errors.BzrError('Mismatched key parent %r:%r' %
1327
parents.append(parent_key[1])
1328
text_lines = osutils.split_lines(repo.texts.get_record_stream(
1329
[key], 'unordered', True).next().get_bytes_as('fulltext'))
1330
output_texts.add_lines(key, parent_keys, text_lines,
1331
random_id=True, check_content=False)
1332
# 5) check that nothing inserted has a reference outside the keyspace.
1333
missing_text_keys = self.new_pack.text_index._external_references()
1334
if missing_text_keys:
1335
raise errors.BzrCheckError('Reference to missing compression parents %r'
1336
% (missing_text_keys,))
1337
self._log_copied_texts()
1339
def _use_pack(self, new_pack):
1340
"""Override _use_pack to check for reconcile having changed content."""
1341
# XXX: we might be better checking this at the copy time.
1342
original_inventory_keys = set()
1343
inv_index = self._pack_collection.inventory_index.combined_index
1344
for entry in inv_index.iter_all_entries():
1345
original_inventory_keys.add(entry[1])
1346
new_inventory_keys = set()
1347
for entry in new_pack.inventory_index.iter_all_entries():
1348
new_inventory_keys.add(entry[1])
1349
if new_inventory_keys != original_inventory_keys:
1350
self._data_changed = True
1351
return new_pack.data_inserted() and self._data_changed
1354
768
class RepositoryPackCollection(object):
1355
769
"""Management of packs within a repository.
1357
771
:ivar _names: map of {pack_name: (index_size,)}
1360
pack_factory = NewPack
1361
resumed_pack_factory = ResumedPack
775
resumed_pack_factory = None
776
normal_packer_class = None
777
optimising_packer_class = None
1363
779
def __init__(self, repo, transport, index_transport, upload_transport,
1364
780
pack_transport, index_builder_class, index_class,
1679
# These attributes are inherited from the Repository base class. Setting
1680
# them to None ensures that if the constructor is changed to not initialize
1681
# them, or a subclass fails to call the constructor, that an error will
1682
# occur rather than the system working but generating incorrect data.
1683
_commit_builder_class = None
2225
1686
def __init__(self, _format, a_bzrdir, control_files, _commit_builder_class,
2227
KnitRepository.__init__(self, _format, a_bzrdir, control_files,
2228
_commit_builder_class, _serializer)
2229
index_transport = self._transport.clone('indices')
2230
self._pack_collection = RepositoryPackCollection(self, self._transport,
2232
self._transport.clone('upload'),
2233
self._transport.clone('packs'),
2234
_format.index_builder_class,
2235
_format.index_class,
2236
use_chk_index=self._format.supports_chks,
2238
self.inventories = KnitVersionedFiles(
2239
_KnitGraphIndex(self._pack_collection.inventory_index.combined_index,
2240
add_callback=self._pack_collection.inventory_index.add_callback,
2241
deltas=True, parents=True, is_locked=self.is_locked),
2242
data_access=self._pack_collection.inventory_index.data_access,
2243
max_delta_chain=200)
2244
self.revisions = KnitVersionedFiles(
2245
_KnitGraphIndex(self._pack_collection.revision_index.combined_index,
2246
add_callback=self._pack_collection.revision_index.add_callback,
2247
deltas=False, parents=True, is_locked=self.is_locked,
2248
track_external_parent_refs=True),
2249
data_access=self._pack_collection.revision_index.data_access,
2251
self.signatures = KnitVersionedFiles(
2252
_KnitGraphIndex(self._pack_collection.signature_index.combined_index,
2253
add_callback=self._pack_collection.signature_index.add_callback,
2254
deltas=False, parents=False, is_locked=self.is_locked),
2255
data_access=self._pack_collection.signature_index.data_access,
2257
self.texts = KnitVersionedFiles(
2258
_KnitGraphIndex(self._pack_collection.text_index.combined_index,
2259
add_callback=self._pack_collection.text_index.add_callback,
2260
deltas=True, parents=True, is_locked=self.is_locked),
2261
data_access=self._pack_collection.text_index.data_access,
2262
max_delta_chain=200)
2263
if _format.supports_chks:
2264
# No graph, no compression:- references from chks are between
2265
# different objects not temporal versions of the same; and without
2266
# some sort of temporal structure knit compression will just fail.
2267
self.chk_bytes = KnitVersionedFiles(
2268
_KnitGraphIndex(self._pack_collection.chk_index.combined_index,
2269
add_callback=self._pack_collection.chk_index.add_callback,
2270
deltas=False, parents=False, is_locked=self.is_locked),
2271
data_access=self._pack_collection.chk_index.data_access,
2274
self.chk_bytes = None
2275
# True when the repository object is 'write locked' (as opposed to the
2276
# physical lock only taken out around changes to the pack-names list.)
2277
# Another way to represent this would be a decorator around the control
2278
# files object that presents logical locks as physical ones - if this
2279
# gets ugly consider that alternative design. RBC 20071011
2280
self._write_lock_count = 0
2281
self._transaction = None
2283
self._reconcile_does_inventory_gc = True
1688
MetaDirRepository.__init__(self, _format, a_bzrdir, control_files)
1689
self._commit_builder_class = _commit_builder_class
1690
self._serializer = _serializer
2284
1691
self._reconcile_fixes_text_parents = True
2285
self._reconcile_backsup_inventory = False
1692
if self._format.supports_external_lookups:
1693
self._unstacked_provider = graph.CachingParentsProvider(
1694
self._make_parents_provider_unstacked())
1696
self._unstacked_provider = graph.CachingParentsProvider(self)
1697
self._unstacked_provider.disable_cache()
2287
def _warn_if_deprecated(self, branch=None):
2288
# This class isn't deprecated, but one sub-format is
2289
if isinstance(self._format, RepositoryFormatKnitPack5RichRootBroken):
2290
super(KnitPackRepository, self)._warn_if_deprecated(branch)
1700
def _all_revision_ids(self):
1701
"""See Repository.all_revision_ids()."""
1702
return [key[0] for key in self.revisions.keys()]
2292
1704
def _abort_write_group(self):
2293
1705
self.revisions._index._key_dependencies.clear()
2294
1706
self._pack_collection._abort_write_group()
2296
def _get_source(self, to_format):
2297
if to_format.network_name() == self._format.network_name():
2298
return KnitPackStreamSource(self, to_format)
2299
return super(KnitPackRepository, self)._get_source(to_format)
2301
1708
def _make_parents_provider(self):
2302
return graph.CachingParentsProvider(self)
1709
if not self._format.supports_external_lookups:
1710
return self._unstacked_provider
1711
return graph.StackedParentsProvider(_LazyListJoin(
1712
[self._unstacked_provider], self._fallback_repositories))
2304
1714
def _refresh_data(self):
2305
1715
if not self.is_locked():
2307
1717
self._pack_collection.reload_pack_names()
1718
self._unstacked_provider.disable_cache()
1719
self._unstacked_provider.enable_cache()
2309
1721
def _start_write_group(self):
2310
1722
self._pack_collection._start_write_group()
2431
1849
self.control_files.unlock()
2433
1851
if not self.is_locked():
1852
self._unstacked_provider.disable_cache()
2434
1853
for repo in self._fallback_repositories:
2438
class KnitPackStreamSource(StreamSource):
2439
"""A StreamSource used to transfer data between same-format KnitPack repos.
2441
This source assumes:
2442
1) Same serialization format for all objects
2443
2) Same root information
2444
3) XML format inventories
2445
4) Atomic inserts (so we can stream inventory texts before text
2450
def __init__(self, from_repository, to_format):
2451
super(KnitPackStreamSource, self).__init__(from_repository, to_format)
2452
self._text_keys = None
2453
self._text_fetch_order = 'unordered'
2455
def _get_filtered_inv_stream(self, revision_ids):
2456
from_repo = self.from_repository
2457
parent_ids = from_repo._find_parent_ids_of_revisions(revision_ids)
2458
parent_keys = [(p,) for p in parent_ids]
2459
find_text_keys = from_repo._find_text_key_references_from_xml_inventory_lines
2460
parent_text_keys = set(find_text_keys(
2461
from_repo._inventory_xml_lines_for_keys(parent_keys)))
2462
content_text_keys = set()
2463
knit = KnitVersionedFiles(None, None)
2464
factory = KnitPlainFactory()
2465
def find_text_keys_from_content(record):
2466
if record.storage_kind not in ('knit-delta-gz', 'knit-ft-gz'):
2467
raise ValueError("Unknown content storage kind for"
2468
" inventory text: %s" % (record.storage_kind,))
2469
# It's a knit record, it has a _raw_record field (even if it was
2470
# reconstituted from a network stream).
2471
raw_data = record._raw_record
2472
# read the entire thing
2473
revision_id = record.key[-1]
2474
content, _ = knit._parse_record(revision_id, raw_data)
2475
if record.storage_kind == 'knit-delta-gz':
2476
line_iterator = factory.get_linedelta_content(content)
2477
elif record.storage_kind == 'knit-ft-gz':
2478
line_iterator = factory.get_fulltext_content(content)
2479
content_text_keys.update(find_text_keys(
2480
[(line, revision_id) for line in line_iterator]))
2481
revision_keys = [(r,) for r in revision_ids]
2482
def _filtered_inv_stream():
2483
source_vf = from_repo.inventories
2484
stream = source_vf.get_record_stream(revision_keys,
2486
for record in stream:
2487
if record.storage_kind == 'absent':
2488
raise errors.NoSuchRevision(from_repo, record.key)
2489
find_text_keys_from_content(record)
2491
self._text_keys = content_text_keys - parent_text_keys
2492
return ('inventories', _filtered_inv_stream())
2494
def _get_text_stream(self):
2495
# Note: We know we don't have to handle adding root keys, because both
2496
# the source and target are the identical network name.
2497
text_stream = self.from_repository.texts.get_record_stream(
2498
self._text_keys, self._text_fetch_order, False)
2499
return ('texts', text_stream)
2501
def get_stream(self, search):
2502
revision_ids = search.get_keys()
2503
for stream_info in self._fetch_revision_texts(revision_ids):
2505
self._revision_keys = [(rev_id,) for rev_id in revision_ids]
2506
yield self._get_filtered_inv_stream(revision_ids)
2507
yield self._get_text_stream()
2511
class RepositoryFormatPack(MetaDirRepositoryFormat):
1857
class RepositoryFormatPack(MetaDirVersionedFileRepositoryFormat):
2512
1858
"""Format logic for pack structured repositories.
2514
1860
This repository format has:
2586
1934
_serializer=self._serializer)
2589
class RepositoryFormatKnitPack1(RepositoryFormatPack):
2590
"""A no-subtrees parameterized Pack repository.
2592
This format was introduced in 0.92.
2595
repository_class = KnitPackRepository
2596
_commit_builder_class = PackCommitBuilder
2598
def _serializer(self):
2599
return xml5.serializer_v5
2600
# What index classes to use
2601
index_builder_class = InMemoryGraphIndex
2602
index_class = GraphIndex
2604
def _get_matching_bzrdir(self):
2605
return bzrdir.format_registry.make_bzrdir('pack-0.92')
2607
def _ignore_setting_bzrdir(self, format):
2610
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2612
def get_format_string(self):
2613
"""See RepositoryFormat.get_format_string()."""
2614
return "Bazaar pack repository format 1 (needs bzr 0.92)\n"
2616
def get_format_description(self):
2617
"""See RepositoryFormat.get_format_description()."""
2618
return "Packs containing knits without subtree support"
2621
class RepositoryFormatKnitPack3(RepositoryFormatPack):
2622
"""A subtrees parameterized Pack repository.
2624
This repository format uses the xml7 serializer to get:
2625
- support for recording full info about the tree root
2626
- support for recording tree-references
2628
This format was introduced in 0.92.
2631
repository_class = KnitPackRepository
2632
_commit_builder_class = PackRootCommitBuilder
2633
rich_root_data = True
2635
supports_tree_reference = True
2637
def _serializer(self):
2638
return xml7.serializer_v7
2639
# What index classes to use
2640
index_builder_class = InMemoryGraphIndex
2641
index_class = GraphIndex
2643
def _get_matching_bzrdir(self):
2644
return bzrdir.format_registry.make_bzrdir(
2645
'pack-0.92-subtree')
2647
def _ignore_setting_bzrdir(self, format):
2650
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2652
def get_format_string(self):
2653
"""See RepositoryFormat.get_format_string()."""
2654
return "Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n"
2656
def get_format_description(self):
2657
"""See RepositoryFormat.get_format_description()."""
2658
return "Packs containing knits with subtree support\n"
2661
class RepositoryFormatKnitPack4(RepositoryFormatPack):
2662
"""A rich-root, no subtrees parameterized Pack repository.
2664
This repository format uses the xml6 serializer to get:
2665
- support for recording full info about the tree root
2667
This format was introduced in 1.0.
2670
repository_class = KnitPackRepository
2671
_commit_builder_class = PackRootCommitBuilder
2672
rich_root_data = True
2673
supports_tree_reference = False
2675
def _serializer(self):
2676
return xml6.serializer_v6
2677
# What index classes to use
2678
index_builder_class = InMemoryGraphIndex
2679
index_class = GraphIndex
2681
def _get_matching_bzrdir(self):
2682
return bzrdir.format_registry.make_bzrdir(
2685
def _ignore_setting_bzrdir(self, format):
2688
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2690
def get_format_string(self):
2691
"""See RepositoryFormat.get_format_string()."""
2692
return ("Bazaar pack repository format 1 with rich root"
2693
" (needs bzr 1.0)\n")
2695
def get_format_description(self):
2696
"""See RepositoryFormat.get_format_description()."""
2697
return "Packs containing knits with rich root support\n"
2700
class RepositoryFormatKnitPack5(RepositoryFormatPack):
2701
"""Repository that supports external references to allow stacking.
2705
Supports external lookups, which results in non-truncated ghosts after
2706
reconcile compared to pack-0.92 formats.
2709
repository_class = KnitPackRepository
2710
_commit_builder_class = PackCommitBuilder
2711
supports_external_lookups = True
2712
# What index classes to use
2713
index_builder_class = InMemoryGraphIndex
2714
index_class = GraphIndex
2717
def _serializer(self):
2718
return xml5.serializer_v5
2720
def _get_matching_bzrdir(self):
2721
return bzrdir.format_registry.make_bzrdir('1.6')
2723
def _ignore_setting_bzrdir(self, format):
2726
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2728
def get_format_string(self):
2729
"""See RepositoryFormat.get_format_string()."""
2730
return "Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n"
2732
def get_format_description(self):
2733
"""See RepositoryFormat.get_format_description()."""
2734
return "Packs 5 (adds stacking support, requires bzr 1.6)"
2737
class RepositoryFormatKnitPack5RichRoot(RepositoryFormatPack):
2738
"""A repository with rich roots and stacking.
2740
New in release 1.6.1.
2742
Supports stacking on other repositories, allowing data to be accessed
2743
without being stored locally.
2746
repository_class = KnitPackRepository
2747
_commit_builder_class = PackRootCommitBuilder
2748
rich_root_data = True
2749
supports_tree_reference = False # no subtrees
2750
supports_external_lookups = True
2751
# What index classes to use
2752
index_builder_class = InMemoryGraphIndex
2753
index_class = GraphIndex
2756
def _serializer(self):
2757
return xml6.serializer_v6
2759
def _get_matching_bzrdir(self):
2760
return bzrdir.format_registry.make_bzrdir(
2763
def _ignore_setting_bzrdir(self, format):
2766
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2768
def get_format_string(self):
2769
"""See RepositoryFormat.get_format_string()."""
2770
return "Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n"
2772
def get_format_description(self):
2773
return "Packs 5 rich-root (adds stacking support, requires bzr 1.6.1)"
2776
class RepositoryFormatKnitPack5RichRootBroken(RepositoryFormatPack):
2777
"""A repository with rich roots and external references.
2781
Supports external lookups, which results in non-truncated ghosts after
2782
reconcile compared to pack-0.92 formats.
2784
This format was deprecated because the serializer it uses accidentally
2785
supported subtrees, when the format was not intended to. This meant that
2786
someone could accidentally fetch from an incorrect repository.
2789
repository_class = KnitPackRepository
2790
_commit_builder_class = PackRootCommitBuilder
2791
rich_root_data = True
2792
supports_tree_reference = False # no subtrees
2794
supports_external_lookups = True
2795
# What index classes to use
2796
index_builder_class = InMemoryGraphIndex
2797
index_class = GraphIndex
2800
def _serializer(self):
2801
return xml7.serializer_v7
2803
def _get_matching_bzrdir(self):
2804
matching = bzrdir.format_registry.make_bzrdir(
2806
matching.repository_format = self
2809
def _ignore_setting_bzrdir(self, format):
2812
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2814
def get_format_string(self):
2815
"""See RepositoryFormat.get_format_string()."""
2816
return "Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n"
2818
def get_format_description(self):
2819
return ("Packs 5 rich-root (adds stacking support, requires bzr 1.6)"
2823
class RepositoryFormatKnitPack6(RepositoryFormatPack):
2824
"""A repository with stacking and btree indexes,
2825
without rich roots or subtrees.
2827
This is equivalent to pack-1.6 with B+Tree indices.
2830
repository_class = KnitPackRepository
2831
_commit_builder_class = PackCommitBuilder
2832
supports_external_lookups = True
2833
# What index classes to use
2834
index_builder_class = btree_index.BTreeBuilder
2835
index_class = btree_index.BTreeGraphIndex
2838
def _serializer(self):
2839
return xml5.serializer_v5
2841
def _get_matching_bzrdir(self):
2842
return bzrdir.format_registry.make_bzrdir('1.9')
2844
def _ignore_setting_bzrdir(self, format):
2847
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2849
def get_format_string(self):
2850
"""See RepositoryFormat.get_format_string()."""
2851
return "Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n"
2853
def get_format_description(self):
2854
"""See RepositoryFormat.get_format_description()."""
2855
return "Packs 6 (uses btree indexes, requires bzr 1.9)"
2858
class RepositoryFormatKnitPack6RichRoot(RepositoryFormatPack):
2859
"""A repository with rich roots, no subtrees, stacking and btree indexes.
2861
1.6-rich-root with B+Tree indices.
2864
repository_class = KnitPackRepository
2865
_commit_builder_class = PackRootCommitBuilder
2866
rich_root_data = True
2867
supports_tree_reference = False # no subtrees
2868
supports_external_lookups = True
2869
# What index classes to use
2870
index_builder_class = btree_index.BTreeBuilder
2871
index_class = btree_index.BTreeGraphIndex
2874
def _serializer(self):
2875
return xml6.serializer_v6
2877
def _get_matching_bzrdir(self):
2878
return bzrdir.format_registry.make_bzrdir(
2881
def _ignore_setting_bzrdir(self, format):
2884
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2886
def get_format_string(self):
2887
"""See RepositoryFormat.get_format_string()."""
2888
return "Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n"
2890
def get_format_description(self):
2891
return "Packs 6 rich-root (uses btree indexes, requires bzr 1.9)"
2894
class RepositoryFormatPackDevelopment2Subtree(RepositoryFormatPack):
2895
"""A subtrees development repository.
2897
This format should be retained until the second release after bzr 1.7.
2899
1.6.1-subtree[as it might have been] with B+Tree indices.
2901
This is [now] retained until we have a CHK based subtree format in
2905
repository_class = KnitPackRepository
2906
_commit_builder_class = PackRootCommitBuilder
2907
rich_root_data = True
2909
supports_tree_reference = True
2910
supports_external_lookups = True
2911
# What index classes to use
2912
index_builder_class = btree_index.BTreeBuilder
2913
index_class = btree_index.BTreeGraphIndex
2916
def _serializer(self):
2917
return xml7.serializer_v7
2919
def _get_matching_bzrdir(self):
2920
return bzrdir.format_registry.make_bzrdir(
2921
'development5-subtree')
2923
def _ignore_setting_bzrdir(self, format):
2926
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
2928
def get_format_string(self):
2929
"""See RepositoryFormat.get_format_string()."""
2930
return ("Bazaar development format 2 with subtree support "
2931
"(needs bzr.dev from before 1.8)\n")
2933
def get_format_description(self):
2934
"""See RepositoryFormat.get_format_description()."""
2935
return ("Development repository format, currently the same as "
2936
"1.6.1-subtree with B+Tree indices.\n")
1937
class RetryPackOperations(errors.RetryWithNewPacks):
1938
"""Raised when we are packing and we find a missing file.
1940
Meant as a signaling exception, to tell the RepositoryPackCollection.pack
1941
code it should try again.
1944
internal_error = True
1946
_fmt = ("Pack files have changed, reload and try pack again."
1947
" context: %(context)s %(orig_error)s")
1950
class _DirectPackAccess(object):
1951
"""Access to data in one or more packs with less translation."""
1953
def __init__(self, index_to_packs, reload_func=None, flush_func=None):
1954
"""Create a _DirectPackAccess object.
1956
:param index_to_packs: A dict mapping index objects to the transport
1957
and file names for obtaining data.
1958
:param reload_func: A function to call if we determine that the pack
1959
files have moved and we need to reload our caches. See
1960
bzrlib.repo_fmt.pack_repo.AggregateIndex for more details.
1962
self._container_writer = None
1963
self._write_index = None
1964
self._indices = index_to_packs
1965
self._reload_func = reload_func
1966
self._flush_func = flush_func
1968
def add_raw_records(self, key_sizes, raw_data):
1969
"""Add raw knit bytes to a storage area.
1971
The data is spooled to the container writer in one bytes-record per
1974
:param sizes: An iterable of tuples containing the key and size of each
1976
:param raw_data: A bytestring containing the data.
1977
:return: A list of memos to retrieve the record later. Each memo is an
1978
opaque index memo. For _DirectPackAccess the memo is (index, pos,
1979
length), where the index field is the write_index object supplied
1980
to the PackAccess object.
1982
if type(raw_data) is not str:
1983
raise AssertionError(
1984
'data must be plain bytes was %s' % type(raw_data))
1987
for key, size in key_sizes:
1988
p_offset, p_length = self._container_writer.add_bytes_record(
1989
raw_data[offset:offset+size], [])
1991
result.append((self._write_index, p_offset, p_length))
1995
"""Flush pending writes on this access object.
1997
This will flush any buffered writes to a NewPack.
1999
if self._flush_func is not None:
2002
def get_raw_records(self, memos_for_retrieval):
2003
"""Get the raw bytes for a records.
2005
:param memos_for_retrieval: An iterable containing the (index, pos,
2006
length) memo for retrieving the bytes. The Pack access method
2007
looks up the pack to use for a given record in its index_to_pack
2009
:return: An iterator over the bytes of the records.
2011
# first pass, group into same-index requests
2013
current_index = None
2014
for (index, offset, length) in memos_for_retrieval:
2015
if current_index == index:
2016
current_list.append((offset, length))
2018
if current_index is not None:
2019
request_lists.append((current_index, current_list))
2020
current_index = index
2021
current_list = [(offset, length)]
2022
# handle the last entry
2023
if current_index is not None:
2024
request_lists.append((current_index, current_list))
2025
for index, offsets in request_lists:
2027
transport, path = self._indices[index]
2029
# A KeyError here indicates that someone has triggered an index
2030
# reload, and this index has gone missing, we need to start
2032
if self._reload_func is None:
2033
# If we don't have a _reload_func there is nothing that can
2036
raise errors.RetryWithNewPacks(index,
2037
reload_occurred=True,
2038
exc_info=sys.exc_info())
2040
reader = pack.make_readv_reader(transport, path, offsets)
2041
for names, read_func in reader.iter_records():
2042
yield read_func(None)
2043
except errors.NoSuchFile:
2044
# A NoSuchFile error indicates that a pack file has gone
2045
# missing on disk, we need to trigger a reload, and start over.
2046
if self._reload_func is None:
2048
raise errors.RetryWithNewPacks(transport.abspath(path),
2049
reload_occurred=False,
2050
exc_info=sys.exc_info())
2052
def set_writer(self, writer, index, transport_packname):
2053
"""Set a writer to use for adding data."""
2054
if index is not None:
2055
self._indices[index] = transport_packname
2056
self._container_writer = writer
2057
self._write_index = index
2059
def reload_or_raise(self, retry_exc):
2060
"""Try calling the reload function, or re-raise the original exception.
2062
This should be called after _DirectPackAccess raises a
2063
RetryWithNewPacks exception. This function will handle the common logic
2064
of determining when the error is fatal versus being temporary.
2065
It will also make sure that the original exception is raised, rather
2066
than the RetryWithNewPacks exception.
2068
If this function returns, then the calling function should retry
2069
whatever operation was being performed. Otherwise an exception will
2072
:param retry_exc: A RetryWithNewPacks exception.
2075
if self._reload_func is None:
2077
elif not self._reload_func():
2078
# The reload claimed that nothing changed
2079
if not retry_exc.reload_occurred:
2080
# If there wasn't an earlier reload, then we really were
2081
# expecting to find changes. We didn't find them, so this is a
2085
exc_class, exc_value, exc_traceback = retry_exc.exc_info
2086
raise exc_class, exc_value, exc_traceback
added
removed
bzrlib/repofmt/pack_repo.py
