/usr/lib/python2.7/dist-packages/bzrlib/bundle/serializer/v4.py is in python-bzrlib 2.7.0-2ubuntu3.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 | # Copyright (C) 2007-2010 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from __future__ import absolute_import
from cStringIO import StringIO
import bz2
import re
from bzrlib import (
errors,
iterablefile,
lru_cache,
multiparent,
osutils,
pack,
revision as _mod_revision,
serializer,
trace,
ui,
versionedfile as _mod_versionedfile,
)
from bzrlib.bundle import bundle_data, serializer as bundle_serializer
from bzrlib.i18n import ngettext
from bzrlib import bencode
class _MPDiffInventoryGenerator(_mod_versionedfile._MPDiffGenerator):
"""Generate Inventory diffs serialized inventories."""
def __init__(self, repo, inventory_keys):
super(_MPDiffInventoryGenerator, self).__init__(repo.inventories,
inventory_keys)
self.repo = repo
self.sha1s = {}
def iter_diffs(self):
"""Compute the diffs one at a time."""
# This is instead of compute_diffs() since we guarantee our ordering of
# inventories, we don't have to do any buffering
self._find_needed_keys()
# We actually use a slightly different ordering. We grab all of the
# parents first, and then grab the ordered requests.
needed_ids = [k[-1] for k in self.present_parents]
needed_ids.extend([k[-1] for k in self.ordered_keys])
inv_to_str = self.repo._serializer.write_inventory_to_string
for inv in self.repo.iter_inventories(needed_ids):
revision_id = inv.revision_id
key = (revision_id,)
if key in self.present_parents:
# Not a key we will transmit, which is a shame, since because
# of that bundles don't work with stacked branches
parent_ids = None
else:
parent_ids = [k[-1] for k in self.parent_map[key]]
as_bytes = inv_to_str(inv)
self._process_one_record(key, (as_bytes,))
if parent_ids is None:
continue
diff = self.diffs.pop(key)
sha1 = osutils.sha_string(as_bytes)
yield revision_id, parent_ids, sha1, diff
class BundleWriter(object):
"""Writer for bundle-format files.
This serves roughly the same purpose as ContainerReader, but acts as a
layer on top of it.
Provides ways of writing the specific record types supported this bundle
format.
"""
def __init__(self, fileobj):
self._container = pack.ContainerWriter(self._write_encoded)
self._fileobj = fileobj
self._compressor = bz2.BZ2Compressor()
def _write_encoded(self, bytes):
"""Write bzip2-encoded bytes to the file"""
self._fileobj.write(self._compressor.compress(bytes))
def begin(self):
"""Start writing the bundle"""
self._fileobj.write(bundle_serializer._get_bundle_header(
bundle_serializer.v4_string))
self._fileobj.write('#\n')
self._container.begin()
def end(self):
"""Finish writing the bundle"""
self._container.end()
self._fileobj.write(self._compressor.flush())
def add_multiparent_record(self, mp_bytes, sha1, parents, repo_kind,
revision_id, file_id):
"""Add a record for a multi-parent diff
:mp_bytes: A multi-parent diff, as a bytestring
:sha1: The sha1 hash of the fulltext
:parents: a list of revision-ids of the parents
:repo_kind: The kind of object in the repository. May be 'file' or
'inventory'
:revision_id: The revision id of the mpdiff being added.
:file_id: The file-id of the file, or None for inventories.
"""
metadata = {'parents': parents,
'storage_kind': 'mpdiff',
'sha1': sha1}
self._add_record(mp_bytes, metadata, repo_kind, revision_id, file_id)
def add_fulltext_record(self, bytes, parents, repo_kind, revision_id):
"""Add a record for a fulltext
:bytes: The fulltext, as a bytestring
:parents: a list of revision-ids of the parents
:repo_kind: The kind of object in the repository. May be 'revision' or
'signature'
:revision_id: The revision id of the fulltext being added.
"""
metadata = {'parents': parents,
'storage_kind': 'mpdiff'}
self._add_record(bytes, {'parents': parents,
'storage_kind': 'fulltext'}, repo_kind, revision_id, None)
def add_info_record(self, **kwargs):
"""Add an info record to the bundle
Any parameters may be supplied, except 'self' and 'storage_kind'.
Values must be lists, strings, integers, dicts, or a combination.
"""
kwargs['storage_kind'] = 'header'
self._add_record(None, kwargs, 'info', None, None)
@staticmethod
def encode_name(content_kind, revision_id, file_id=None):
"""Encode semantic ids as a container name"""
if content_kind not in ('revision', 'file', 'inventory', 'signature',
'info'):
raise ValueError(content_kind)
if content_kind == 'file':
if file_id is None:
raise AssertionError()
else:
if file_id is not None:
raise AssertionError()
if content_kind == 'info':
if revision_id is not None:
raise AssertionError()
elif revision_id is None:
raise AssertionError()
names = [n.replace('/', '//') for n in
(content_kind, revision_id, file_id) if n is not None]
return '/'.join(names)
def _add_record(self, bytes, metadata, repo_kind, revision_id, file_id):
"""Add a bundle record to the container.
Most bundle records are recorded as header/body pairs, with the
body being nameless. Records with storage_kind 'header' have no
body.
"""
name = self.encode_name(repo_kind, revision_id, file_id)
encoded_metadata = bencode.bencode(metadata)
self._container.add_bytes_record(encoded_metadata, [(name, )])
if metadata['storage_kind'] != 'header':
self._container.add_bytes_record(bytes, [])
class BundleReader(object):
"""Reader for bundle-format files.
This serves roughly the same purpose as ContainerReader, but acts as a
layer on top of it, providing metadata, a semantic name, and a record
body
"""
def __init__(self, fileobj, stream_input=True):
"""Constructor
:param fileobj: a file containing a bzip-encoded container
:param stream_input: If True, the BundleReader stream input rather than
reading it all into memory at once. Reading it into memory all at
once is (currently) faster.
"""
line = fileobj.readline()
if line != '\n':
fileobj.readline()
self.patch_lines = []
if stream_input:
source_file = iterablefile.IterableFile(self.iter_decode(fileobj))
else:
source_file = StringIO(bz2.decompress(fileobj.read()))
self._container_file = source_file
@staticmethod
def iter_decode(fileobj):
"""Iterate through decoded fragments of the file"""
decompressor = bz2.BZ2Decompressor()
for line in fileobj:
try:
yield decompressor.decompress(line)
except EOFError:
return
@staticmethod
def decode_name(name):
"""Decode a name from its container form into a semantic form
:retval: content_kind, revision_id, file_id
"""
segments = re.split('(//?)', name)
names = ['']
for segment in segments:
if segment == '//':
names[-1] += '/'
elif segment == '/':
names.append('')
else:
names[-1] += segment
content_kind = names[0]
revision_id = None
file_id = None
if len(names) > 1:
revision_id = names[1]
if len(names) > 2:
file_id = names[2]
return content_kind, revision_id, file_id
def iter_records(self):
"""Iterate through bundle records
:return: a generator of (bytes, metadata, content_kind, revision_id,
file_id)
"""
iterator = pack.iter_records_from_file(self._container_file)
for names, bytes in iterator:
if len(names) != 1:
raise errors.BadBundle('Record has %d names instead of 1'
% len(names))
metadata = bencode.bdecode(bytes)
if metadata['storage_kind'] == 'header':
bytes = None
else:
_unused, bytes = iterator.next()
yield (bytes, metadata) + self.decode_name(names[0][0])
class BundleSerializerV4(bundle_serializer.BundleSerializer):
"""Implement the high-level bundle interface"""
def write(self, repository, revision_ids, forced_bases, fileobj):
"""Write a bundle to a file-like object
For backwards-compatibility only
"""
write_op = BundleWriteOperation.from_old_args(repository, revision_ids,
forced_bases, fileobj)
return write_op.do_write()
def write_bundle(self, repository, target, base, fileobj):
"""Write a bundle to a file object
:param repository: The repository to retrieve revision data from
:param target: The head revision to include ancestors of
:param base: The ancestor of the target to stop including acestors
at.
:param fileobj: The file-like object to write to
"""
write_op = BundleWriteOperation(base, target, repository, fileobj)
return write_op.do_write()
def read(self, file):
"""return a reader object for a given file"""
bundle = BundleInfoV4(file, self)
return bundle
@staticmethod
def get_source_serializer(info):
"""Retrieve the serializer for a given info object"""
return serializer.format_registry.get(info['serializer'])
class BundleWriteOperation(object):
"""Perform the operation of writing revisions to a bundle"""
@classmethod
def from_old_args(cls, repository, revision_ids, forced_bases, fileobj):
"""Create a BundleWriteOperation from old-style arguments"""
base, target = cls.get_base_target(revision_ids, forced_bases,
repository)
return BundleWriteOperation(base, target, repository, fileobj,
revision_ids)
def __init__(self, base, target, repository, fileobj, revision_ids=None):
self.base = base
self.target = target
self.repository = repository
bundle = BundleWriter(fileobj)
self.bundle = bundle
if revision_ids is not None:
self.revision_ids = revision_ids
else:
graph = repository.get_graph()
revision_ids = graph.find_unique_ancestors(target, [base])
# Strip ghosts
parents = graph.get_parent_map(revision_ids)
self.revision_ids = [r for r in revision_ids if r in parents]
self.revision_keys = set([(revid,) for revid in self.revision_ids])
def do_write(self):
"""Write all data to the bundle"""
trace.note(ngettext('Bundling %d revision.', 'Bundling %d revisions.',
len(self.revision_ids)), len(self.revision_ids))
self.repository.lock_read()
try:
self.bundle.begin()
self.write_info()
self.write_files()
self.write_revisions()
self.bundle.end()
finally:
self.repository.unlock()
return self.revision_ids
def write_info(self):
"""Write format info"""
serializer_format = self.repository.get_serializer_format()
supports_rich_root = {True: 1, False: 0}[
self.repository.supports_rich_root()]
self.bundle.add_info_record(serializer=serializer_format,
supports_rich_root=supports_rich_root)
def write_files(self):
"""Write bundle records for all revisions of all files"""
text_keys = []
altered_fileids = self.repository.fileids_altered_by_revision_ids(
self.revision_ids)
for file_id, revision_ids in altered_fileids.iteritems():
for revision_id in revision_ids:
text_keys.append((file_id, revision_id))
self._add_mp_records_keys('file', self.repository.texts, text_keys)
def write_revisions(self):
"""Write bundle records for all revisions and signatures"""
inv_vf = self.repository.inventories
topological_order = [key[-1] for key in multiparent.topo_iter_keys(
inv_vf, self.revision_keys)]
revision_order = topological_order
if self.target is not None and self.target in self.revision_ids:
# Make sure the target revision is always the last entry
revision_order = list(topological_order)
revision_order.remove(self.target)
revision_order.append(self.target)
if self.repository._serializer.support_altered_by_hack:
# Repositories that support_altered_by_hack means that
# inventories.make_mpdiffs() contains all the data about the tree
# shape. Formats without support_altered_by_hack require
# chk_bytes/etc, so we use a different code path.
self._add_mp_records_keys('inventory', inv_vf,
[(revid,) for revid in topological_order])
else:
# Inventories should always be added in pure-topological order, so
# that we can apply the mpdiff for the child to the parent texts.
self._add_inventory_mpdiffs_from_serializer(topological_order)
self._add_revision_texts(revision_order)
def _add_inventory_mpdiffs_from_serializer(self, revision_order):
"""Generate mpdiffs by serializing inventories.
The current repository only has part of the tree shape information in
the 'inventories' vf. So we use serializer.write_inventory_to_string to
get a 'full' representation of the tree shape, and then generate
mpdiffs on that data stream. This stream can then be reconstructed on
the other side.
"""
inventory_key_order = [(r,) for r in revision_order]
generator = _MPDiffInventoryGenerator(self.repository,
inventory_key_order)
for revision_id, parent_ids, sha1, diff in generator.iter_diffs():
text = ''.join(diff.to_patch())
self.bundle.add_multiparent_record(text, sha1, parent_ids,
'inventory', revision_id, None)
def _add_revision_texts(self, revision_order):
parent_map = self.repository.get_parent_map(revision_order)
revision_to_str = self.repository._serializer.write_revision_to_string
revisions = self.repository.get_revisions(revision_order)
for revision in revisions:
revision_id = revision.revision_id
parents = parent_map.get(revision_id, None)
revision_text = revision_to_str(revision)
self.bundle.add_fulltext_record(revision_text, parents,
'revision', revision_id)
try:
self.bundle.add_fulltext_record(
self.repository.get_signature_text(
revision_id), parents, 'signature', revision_id)
except errors.NoSuchRevision:
pass
@staticmethod
def get_base_target(revision_ids, forced_bases, repository):
"""Determine the base and target from old-style revision ids"""
if len(revision_ids) == 0:
return None, None
target = revision_ids[0]
base = forced_bases.get(target)
if base is None:
parents = repository.get_revision(target).parent_ids
if len(parents) == 0:
base = _mod_revision.NULL_REVISION
else:
base = parents[0]
return base, target
def _add_mp_records_keys(self, repo_kind, vf, keys):
"""Add multi-parent diff records to a bundle"""
ordered_keys = list(multiparent.topo_iter_keys(vf, keys))
mpdiffs = vf.make_mpdiffs(ordered_keys)
sha1s = vf.get_sha1s(ordered_keys)
parent_map = vf.get_parent_map(ordered_keys)
for mpdiff, item_key, in zip(mpdiffs, ordered_keys):
sha1 = sha1s[item_key]
parents = [key[-1] for key in parent_map[item_key]]
text = ''.join(mpdiff.to_patch())
# Infer file id records as appropriate.
if len(item_key) == 2:
file_id = item_key[0]
else:
file_id = None
self.bundle.add_multiparent_record(text, sha1, parents, repo_kind,
item_key[-1], file_id)
class BundleInfoV4(object):
"""Provide (most of) the BundleInfo interface"""
def __init__(self, fileobj, serializer):
self._fileobj = fileobj
self._serializer = serializer
self.__real_revisions = None
self.__revisions = None
def install(self, repository):
return self.install_revisions(repository)
def install_revisions(self, repository, stream_input=True):
"""Install this bundle's revisions into the specified repository
:param target_repo: The repository to install into
:param stream_input: If True, will stream input rather than reading it
all into memory at once. Reading it into memory all at once is
(currently) faster.
"""
repository.lock_write()
try:
ri = RevisionInstaller(self.get_bundle_reader(stream_input),
self._serializer, repository)
return ri.install()
finally:
repository.unlock()
def get_merge_request(self, target_repo):
"""Provide data for performing a merge
Returns suggested base, suggested target, and patch verification status
"""
return None, self.target, 'inapplicable'
def get_bundle_reader(self, stream_input=True):
"""Return a new BundleReader for the associated bundle
:param stream_input: If True, the BundleReader stream input rather than
reading it all into memory at once. Reading it into memory all at
once is (currently) faster.
"""
self._fileobj.seek(0)
return BundleReader(self._fileobj, stream_input)
def _get_real_revisions(self):
if self.__real_revisions is None:
self.__real_revisions = []
bundle_reader = self.get_bundle_reader()
for bytes, metadata, repo_kind, revision_id, file_id in \
bundle_reader.iter_records():
if repo_kind == 'info':
serializer =\
self._serializer.get_source_serializer(metadata)
if repo_kind == 'revision':
rev = serializer.read_revision_from_string(bytes)
self.__real_revisions.append(rev)
return self.__real_revisions
real_revisions = property(_get_real_revisions)
def _get_revisions(self):
if self.__revisions is None:
self.__revisions = []
for revision in self.real_revisions:
self.__revisions.append(
bundle_data.RevisionInfo.from_revision(revision))
return self.__revisions
revisions = property(_get_revisions)
def _get_target(self):
return self.revisions[-1].revision_id
target = property(_get_target)
class RevisionInstaller(object):
"""Installs revisions into a repository"""
def __init__(self, container, serializer, repository):
self._container = container
self._serializer = serializer
self._repository = repository
self._info = None
def install(self):
"""Perform the installation.
Must be called with the Repository locked.
"""
self._repository.start_write_group()
try:
result = self._install_in_write_group()
except:
self._repository.abort_write_group()
raise
self._repository.commit_write_group()
return result
def _install_in_write_group(self):
current_file = None
current_versionedfile = None
pending_file_records = []
inventory_vf = None
pending_inventory_records = []
added_inv = set()
target_revision = None
for bytes, metadata, repo_kind, revision_id, file_id in\
self._container.iter_records():
if repo_kind == 'info':
if self._info is not None:
raise AssertionError()
self._handle_info(metadata)
if (pending_file_records and
(repo_kind, file_id) != ('file', current_file)):
# Flush the data for a single file - prevents memory
# spiking due to buffering all files in memory.
self._install_mp_records_keys(self._repository.texts,
pending_file_records)
current_file = None
del pending_file_records[:]
if len(pending_inventory_records) > 0 and repo_kind != 'inventory':
self._install_inventory_records(pending_inventory_records)
pending_inventory_records = []
if repo_kind == 'inventory':
pending_inventory_records.append(((revision_id,), metadata, bytes))
if repo_kind == 'revision':
target_revision = revision_id
self._install_revision(revision_id, metadata, bytes)
if repo_kind == 'signature':
self._install_signature(revision_id, metadata, bytes)
if repo_kind == 'file':
current_file = file_id
pending_file_records.append(((file_id, revision_id), metadata, bytes))
self._install_mp_records_keys(self._repository.texts, pending_file_records)
return target_revision
def _handle_info(self, info):
"""Extract data from an info record"""
self._info = info
self._source_serializer = self._serializer.get_source_serializer(info)
if (info['supports_rich_root'] == 0 and
self._repository.supports_rich_root()):
self.update_root = True
else:
self.update_root = False
def _install_mp_records(self, versionedfile, records):
if len(records) == 0:
return
d_func = multiparent.MultiParent.from_patch
vf_records = [(r, m['parents'], m['sha1'], d_func(t)) for r, m, t in
records if r not in versionedfile]
versionedfile.add_mpdiffs(vf_records)
def _install_mp_records_keys(self, versionedfile, records):
d_func = multiparent.MultiParent.from_patch
vf_records = []
for key, meta, text in records:
# Adapt to tuple interface: A length two key is a file_id,
# revision_id pair, a length 1 key is a
# revision/signature/inventory. We need to do this because
# the metadata extraction from the bundle has not yet been updated
# to use the consistent tuple interface itself.
if len(key) == 2:
prefix = key[:1]
else:
prefix = ()
parents = [prefix + (parent,) for parent in meta['parents']]
vf_records.append((key, parents, meta['sha1'], d_func(text)))
versionedfile.add_mpdiffs(vf_records)
def _get_parent_inventory_texts(self, inventory_text_cache,
inventory_cache, parent_ids):
cached_parent_texts = {}
remaining_parent_ids = []
for parent_id in parent_ids:
p_text = inventory_text_cache.get(parent_id, None)
if p_text is None:
remaining_parent_ids.append(parent_id)
else:
cached_parent_texts[parent_id] = p_text
ghosts = ()
# TODO: Use inventory_cache to grab inventories we already have in
# memory
if remaining_parent_ids:
# first determine what keys are actually present in the local
# inventories object (don't use revisions as they haven't been
# installed yet.)
parent_keys = [(r,) for r in remaining_parent_ids]
present_parent_map = self._repository.inventories.get_parent_map(
parent_keys)
present_parent_ids = []
ghosts = set()
for p_id in remaining_parent_ids:
if (p_id,) in present_parent_map:
present_parent_ids.append(p_id)
else:
ghosts.add(p_id)
to_string = self._source_serializer.write_inventory_to_string
for parent_inv in self._repository.iter_inventories(
present_parent_ids):
p_text = to_string(parent_inv)
inventory_cache[parent_inv.revision_id] = parent_inv
cached_parent_texts[parent_inv.revision_id] = p_text
inventory_text_cache[parent_inv.revision_id] = p_text
parent_texts = [cached_parent_texts[parent_id]
for parent_id in parent_ids
if parent_id not in ghosts]
return parent_texts
def _install_inventory_records(self, records):
if (self._info['serializer'] == self._repository._serializer.format_num
and self._repository._serializer.support_altered_by_hack):
return self._install_mp_records_keys(self._repository.inventories,
records)
# Use a 10MB text cache, since these are string xml inventories. Note
# that 10MB is fairly small for large projects (a single inventory can
# be >5MB). Another possibility is to cache 10-20 inventory texts
# instead
inventory_text_cache = lru_cache.LRUSizeCache(10*1024*1024)
# Also cache the in-memory representation. This allows us to create
# inventory deltas to apply rather than calling add_inventory from
# scratch each time.
inventory_cache = lru_cache.LRUCache(10)
pb = ui.ui_factory.nested_progress_bar()
try:
num_records = len(records)
for idx, (key, metadata, bytes) in enumerate(records):
pb.update('installing inventory', idx, num_records)
revision_id = key[-1]
parent_ids = metadata['parents']
# Note: This assumes the local ghosts are identical to the
# ghosts in the source, as the Bundle serialization
# format doesn't record ghosts.
p_texts = self._get_parent_inventory_texts(inventory_text_cache,
inventory_cache,
parent_ids)
# Why does to_lines() take strings as the source, it seems that
# it would have to cast to a list of lines, which we get back
# as lines and then cast back to a string.
target_lines = multiparent.MultiParent.from_patch(bytes
).to_lines(p_texts)
inv_text = ''.join(target_lines)
del target_lines
sha1 = osutils.sha_string(inv_text)
if sha1 != metadata['sha1']:
raise errors.BadBundle("Can't convert to target format")
# Add this to the cache so we don't have to extract it again.
inventory_text_cache[revision_id] = inv_text
target_inv = self._source_serializer.read_inventory_from_string(
inv_text)
self._handle_root(target_inv, parent_ids)
parent_inv = None
if parent_ids:
parent_inv = inventory_cache.get(parent_ids[0], None)
try:
if parent_inv is None:
self._repository.add_inventory(revision_id, target_inv,
parent_ids)
else:
delta = target_inv._make_delta(parent_inv)
self._repository.add_inventory_by_delta(parent_ids[0],
delta, revision_id, parent_ids)
except errors.UnsupportedInventoryKind:
raise errors.IncompatibleRevision(repr(self._repository))
inventory_cache[revision_id] = target_inv
finally:
pb.finished()
def _handle_root(self, target_inv, parent_ids):
revision_id = target_inv.revision_id
if self.update_root:
text_key = (target_inv.root.file_id, revision_id)
parent_keys = [(target_inv.root.file_id, parent) for
parent in parent_ids]
self._repository.texts.add_lines(text_key, parent_keys, [])
elif not self._repository.supports_rich_root():
if target_inv.root.revision != revision_id:
raise errors.IncompatibleRevision(repr(self._repository))
def _install_revision(self, revision_id, metadata, text):
if self._repository.has_revision(revision_id):
return
revision = self._source_serializer.read_revision_from_string(text)
self._repository.add_revision(revision.revision_id, revision)
def _install_signature(self, revision_id, metadata, text):
transaction = self._repository.get_transaction()
if self._repository.has_signature_for_revision_id(revision_id):
return
self._repository.add_signature_text(revision_id, text)
|