1
# Copyright (C) 2005-2010 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
"""Read in a bundle stream, and process it into a BundleReader object."""
20
from cStringIO import StringIO
29
from bzrlib.bundle import apply_bundle
30
from bzrlib.errors import (TestamentMismatch, BzrError,
31
MalformedHeader, MalformedPatches, NotABundle)
32
from bzrlib.inventory import (Inventory, InventoryEntry,
33
InventoryDirectory, InventoryFile,
35
from bzrlib.osutils import sha_file, sha_string, pathjoin
36
from bzrlib.revision import Revision, NULL_REVISION
37
from bzrlib.testament import StrictTestament
38
from bzrlib.trace import mutter, warning
39
import bzrlib.transport
40
from bzrlib.tree import Tree
41
import bzrlib.urlutils
42
from bzrlib.xml5 import serializer_v5
45
class RevisionInfo(object):
46
"""Gets filled out for each revision object that is read.
48
def __init__(self, revision_id):
49
self.revision_id = revision_id
55
self.inventory_sha1 = None
57
self.parent_ids = None
60
self.properties = None
61
self.tree_actions = None
64
return pprint.pformat(self.__dict__)
66
def as_revision(self):
67
rev = Revision(revision_id=self.revision_id,
68
committer=self.committer,
69
timestamp=float(self.timestamp),
70
timezone=int(self.timezone),
71
inventory_sha1=self.inventory_sha1,
72
message='\n'.join(self.message))
75
rev.parent_ids.extend(self.parent_ids)
78
for property in self.properties:
79
key_end = property.find(': ')
81
if not property.endswith(':'):
82
raise ValueError(property)
83
key = str(property[:-1])
86
key = str(property[:key_end])
87
value = property[key_end+2:]
88
rev.properties[key] = value
93
def from_revision(revision):
94
revision_info = RevisionInfo(revision.revision_id)
95
date = timestamp.format_highres_date(revision.timestamp,
97
revision_info.date = date
98
revision_info.timezone = revision.timezone
99
revision_info.timestamp = revision.timestamp
100
revision_info.message = revision.message.split('\n')
101
revision_info.properties = [': '.join(p) for p in
102
revision.properties.iteritems()]
106
class BundleInfo(object):
107
"""This contains the meta information. Stuff that allows you to
108
recreate the revision or inventory XML.
110
def __init__(self, bundle_format=None):
111
self.bundle_format = None
112
self.committer = None
116
# A list of RevisionInfo objects
119
# The next entries are created during complete_info() and
120
# other post-read functions.
122
# A list of real Revision objects
123
self.real_revisions = []
125
self.timestamp = None
128
# Have we checked the repository yet?
129
self._validated_revisions_against_repo = False
132
return pprint.pformat(self.__dict__)
134
def complete_info(self):
135
"""This makes sure that all information is properly
136
split up, based on the assumptions that can be made
137
when information is missing.
139
from bzrlib.timestamp import unpack_highres_date
140
# Put in all of the guessable information.
141
if not self.timestamp and self.date:
142
self.timestamp, self.timezone = unpack_highres_date(self.date)
144
self.real_revisions = []
145
for rev in self.revisions:
146
if rev.timestamp is None:
147
if rev.date is not None:
148
rev.timestamp, rev.timezone = \
149
unpack_highres_date(rev.date)
151
rev.timestamp = self.timestamp
152
rev.timezone = self.timezone
153
if rev.message is None and self.message:
154
rev.message = self.message
155
if rev.committer is None and self.committer:
156
rev.committer = self.committer
157
self.real_revisions.append(rev.as_revision())
159
def get_base(self, revision):
160
revision_info = self.get_revision_info(revision.revision_id)
161
if revision_info.base_id is not None:
162
return revision_info.base_id
163
if len(revision.parent_ids) == 0:
164
# There is no base listed, and
165
# the lowest revision doesn't have a parent
166
# so this is probably against the empty tree
167
# and thus base truly is NULL_REVISION
170
return revision.parent_ids[-1]
172
def _get_target(self):
173
"""Return the target revision."""
174
if len(self.real_revisions) > 0:
175
return self.real_revisions[0].revision_id
176
elif len(self.revisions) > 0:
177
return self.revisions[0].revision_id
180
target = property(_get_target, doc='The target revision id')
182
def get_revision(self, revision_id):
183
for r in self.real_revisions:
184
if r.revision_id == revision_id:
186
raise KeyError(revision_id)
188
def get_revision_info(self, revision_id):
189
for r in self.revisions:
190
if r.revision_id == revision_id:
192
raise KeyError(revision_id)
194
def revision_tree(self, repository, revision_id, base=None):
195
revision = self.get_revision(revision_id)
196
base = self.get_base(revision)
197
if base == revision_id:
198
raise AssertionError()
199
if not self._validated_revisions_against_repo:
200
self._validate_references_from_repository(repository)
201
revision_info = self.get_revision_info(revision_id)
202
inventory_revision_id = revision_id
203
bundle_tree = BundleTree(repository.revision_tree(base),
204
inventory_revision_id)
205
self._update_tree(bundle_tree, revision_id)
207
inv = bundle_tree.inventory
208
self._validate_inventory(inv, revision_id)
209
self._validate_revision(inv, revision_id)
213
def _validate_references_from_repository(self, repository):
214
"""Now that we have a repository which should have some of the
215
revisions we care about, go through and validate all of them
220
def add_sha(d, revision_id, sha1):
221
if revision_id is None:
223
raise BzrError('A Null revision should always'
224
'have a null sha1 hash')
227
# This really should have been validated as part
228
# of _validate_revisions but lets do it again
229
if sha1 != d[revision_id]:
230
raise BzrError('** Revision %r referenced with 2 different'
231
' sha hashes %s != %s' % (revision_id,
232
sha1, d[revision_id]))
234
d[revision_id] = sha1
236
# All of the contained revisions were checked
237
# in _validate_revisions
239
for rev_info in self.revisions:
240
checked[rev_info.revision_id] = True
241
add_sha(rev_to_sha, rev_info.revision_id, rev_info.sha1)
243
for (rev, rev_info) in zip(self.real_revisions, self.revisions):
244
add_sha(inv_to_sha, rev_info.revision_id, rev_info.inventory_sha1)
248
for revision_id, sha1 in rev_to_sha.iteritems():
249
if repository.has_revision(revision_id):
250
testament = StrictTestament.from_revision(repository,
252
local_sha1 = self._testament_sha1_from_revision(repository,
254
if sha1 != local_sha1:
255
raise BzrError('sha1 mismatch. For revision id {%s}'
256
'local: %s, bundle: %s' % (revision_id, local_sha1, sha1))
259
elif revision_id not in checked:
260
missing[revision_id] = sha1
263
# I don't know if this is an error yet
264
warning('Not all revision hashes could be validated.'
265
' Unable validate %d hashes' % len(missing))
266
mutter('Verified %d sha hashes for the bundle.' % count)
267
self._validated_revisions_against_repo = True
269
def _validate_inventory(self, inv, revision_id):
270
"""At this point we should have generated the BundleTree,
271
so build up an inventory, and make sure the hashes match.
273
# Now we should have a complete inventory entry.
274
s = serializer_v5.write_inventory_to_string(inv)
276
# Target revision is the last entry in the real_revisions list
277
rev = self.get_revision(revision_id)
278
if rev.revision_id != revision_id:
279
raise AssertionError()
280
if sha1 != rev.inventory_sha1:
281
f = open(',,bogus-inv', 'wb')
286
warning('Inventory sha hash mismatch for revision %s. %s'
287
' != %s' % (revision_id, sha1, rev.inventory_sha1))
289
def _validate_revision(self, inventory, revision_id):
290
"""Make sure all revision entries match their checksum."""
292
# This is a mapping from each revision id to it's sha hash
295
rev = self.get_revision(revision_id)
296
rev_info = self.get_revision_info(revision_id)
297
if not (rev.revision_id == rev_info.revision_id):
298
raise AssertionError()
299
if not (rev.revision_id == revision_id):
300
raise AssertionError()
301
sha1 = self._testament_sha1(rev, inventory)
302
if sha1 != rev_info.sha1:
303
raise TestamentMismatch(rev.revision_id, rev_info.sha1, sha1)
304
if rev.revision_id in rev_to_sha1:
305
raise BzrError('Revision {%s} given twice in the list'
307
rev_to_sha1[rev.revision_id] = sha1
309
def _update_tree(self, bundle_tree, revision_id):
310
"""This fills out a BundleTree based on the information
313
:param bundle_tree: A BundleTree to update with the new information.
316
def get_rev_id(last_changed, path, kind):
317
if last_changed is not None:
318
# last_changed will be a Unicode string because of how it was
319
# read. Convert it back to utf8.
320
changed_revision_id = osutils.safe_revision_id(last_changed,
323
changed_revision_id = revision_id
324
bundle_tree.note_last_changed(path, changed_revision_id)
325
return changed_revision_id
327
def extra_info(info, new_path):
330
for info_item in info:
332
name, value = info_item.split(':', 1)
334
raise ValueError('Value %r has no colon' % info_item)
335
if name == 'last-changed':
337
elif name == 'executable':
338
val = (value == 'yes')
339
bundle_tree.note_executable(new_path, val)
340
elif name == 'target':
341
bundle_tree.note_target(new_path, value)
342
elif name == 'encoding':
344
return last_changed, encoding
346
def do_patch(path, lines, encoding):
347
if encoding == 'base64':
348
patch = base64.decodestring(''.join(lines))
349
elif encoding is None:
350
patch = ''.join(lines)
352
raise ValueError(encoding)
353
bundle_tree.note_patch(path, patch)
355
def renamed(kind, extra, lines):
356
info = extra.split(' // ')
358
raise BzrError('renamed action lines need both a from and to'
361
if info[1].startswith('=> '):
362
new_path = info[1][3:]
366
bundle_tree.note_rename(old_path, new_path)
367
last_modified, encoding = extra_info(info[2:], new_path)
368
revision = get_rev_id(last_modified, new_path, kind)
370
do_patch(new_path, lines, encoding)
372
def removed(kind, extra, lines):
373
info = extra.split(' // ')
375
# TODO: in the future we might allow file ids to be
376
# given for removed entries
377
raise BzrError('removed action lines should only have the path'
380
bundle_tree.note_deletion(path)
382
def added(kind, extra, lines):
383
info = extra.split(' // ')
385
raise BzrError('add action lines require the path and file id'
388
raise BzrError('add action lines have fewer than 5 entries.'
391
if not info[1].startswith('file-id:'):
392
raise BzrError('The file-id should follow the path for an add'
394
# This will be Unicode because of how the stream is read. Turn it
395
# back into a utf8 file_id
396
file_id = osutils.safe_file_id(info[1][8:], warn=False)
398
bundle_tree.note_id(file_id, path, kind)
399
# this will be overridden in extra_info if executable is specified.
400
bundle_tree.note_executable(path, False)
401
last_changed, encoding = extra_info(info[2:], path)
402
revision = get_rev_id(last_changed, path, kind)
403
if kind == 'directory':
405
do_patch(path, lines, encoding)
407
def modified(kind, extra, lines):
408
info = extra.split(' // ')
410
raise BzrError('modified action lines have at least'
411
'the path in them: %r' % extra)
414
last_modified, encoding = extra_info(info[1:], path)
415
revision = get_rev_id(last_modified, path, kind)
417
do_patch(path, lines, encoding)
425
for action_line, lines in \
426
self.get_revision_info(revision_id).tree_actions:
427
first = action_line.find(' ')
429
raise BzrError('Bogus action line'
430
' (no opening space): %r' % action_line)
431
second = action_line.find(' ', first+1)
433
raise BzrError('Bogus action line'
434
' (missing second space): %r' % action_line)
435
action = action_line[:first]
436
kind = action_line[first+1:second]
437
if kind not in ('file', 'directory', 'symlink'):
438
raise BzrError('Bogus action line'
439
' (invalid object kind %r): %r' % (kind, action_line))
440
extra = action_line[second+1:]
442
if action not in valid_actions:
443
raise BzrError('Bogus action line'
444
' (unrecognized action): %r' % action_line)
445
valid_actions[action](kind, extra, lines)
447
def install_revisions(self, target_repo, stream_input=True):
448
"""Install revisions and return the target revision
450
:param target_repo: The repository to install into
451
:param stream_input: Ignored by this implementation.
453
apply_bundle.install_bundle(target_repo, self)
456
def get_merge_request(self, target_repo):
457
"""Provide data for performing a merge
459
Returns suggested base, suggested target, and patch verification status
461
return None, self.target, 'inapplicable'
464
class BundleTree(Tree):
465
def __init__(self, base_tree, revision_id):
466
self.base_tree = base_tree
467
self._renamed = {} # Mapping from old_path => new_path
468
self._renamed_r = {} # new_path => old_path
469
self._new_id = {} # new_path => new_id
470
self._new_id_r = {} # new_id => new_path
471
self._kinds = {} # new_id => kind
472
self._last_changed = {} # new_id => revision_id
473
self._executable = {} # new_id => executable value
475
self._targets = {} # new path => new symlink target
477
self.contents_by_id = True
478
self.revision_id = revision_id
479
self._inventory = None
482
return pprint.pformat(self.__dict__)
484
def note_rename(self, old_path, new_path):
485
"""A file/directory has been renamed from old_path => new_path"""
486
if new_path in self._renamed:
487
raise AssertionError(new_path)
488
if old_path in self._renamed_r:
489
raise AssertionError(old_path)
490
self._renamed[new_path] = old_path
491
self._renamed_r[old_path] = new_path
493
def note_id(self, new_id, new_path, kind='file'):
494
"""Files that don't exist in base need a new id."""
495
self._new_id[new_path] = new_id
496
self._new_id_r[new_id] = new_path
497
self._kinds[new_id] = kind
499
def note_last_changed(self, file_id, revision_id):
500
if (file_id in self._last_changed
501
and self._last_changed[file_id] != revision_id):
502
raise BzrError('Mismatched last-changed revision for file_id {%s}'
503
': %s != %s' % (file_id,
504
self._last_changed[file_id],
506
self._last_changed[file_id] = revision_id
508
def note_patch(self, new_path, patch):
509
"""There is a patch for a given filename."""
510
self.patches[new_path] = patch
512
def note_target(self, new_path, target):
513
"""The symlink at the new path has the given target"""
514
self._targets[new_path] = target
516
def note_deletion(self, old_path):
517
"""The file at old_path has been deleted."""
518
self.deleted.append(old_path)
520
def note_executable(self, new_path, executable):
521
self._executable[new_path] = executable
523
def old_path(self, new_path):
524
"""Get the old_path (path in the base_tree) for the file at new_path"""
525
if new_path[:1] in ('\\', '/'):
526
raise ValueError(new_path)
527
old_path = self._renamed.get(new_path)
528
if old_path is not None:
530
dirname,basename = os.path.split(new_path)
531
# dirname is not '' doesn't work, because
532
# dirname may be a unicode entry, and is
533
# requires the objects to be identical
535
old_dir = self.old_path(dirname)
539
old_path = pathjoin(old_dir, basename)
542
#If the new path wasn't in renamed, the old one shouldn't be in
544
if old_path in self._renamed_r:
548
def new_path(self, old_path):
549
"""Get the new_path (path in the target_tree) for the file at old_path
552
if old_path[:1] in ('\\', '/'):
553
raise ValueError(old_path)
554
new_path = self._renamed_r.get(old_path)
555
if new_path is not None:
557
if new_path in self._renamed:
559
dirname,basename = os.path.split(old_path)
561
new_dir = self.new_path(dirname)
565
new_path = pathjoin(new_dir, basename)
568
#If the old path wasn't in renamed, the new one shouldn't be in
570
if new_path in self._renamed:
574
def path2id(self, path):
575
"""Return the id of the file present at path in the target tree."""
576
file_id = self._new_id.get(path)
577
if file_id is not None:
579
old_path = self.old_path(path)
582
if old_path in self.deleted:
584
if getattr(self.base_tree, 'path2id', None) is not None:
585
return self.base_tree.path2id(old_path)
587
return self.base_tree.inventory.path2id(old_path)
589
def id2path(self, file_id):
590
"""Return the new path in the target tree of the file with id file_id"""
591
path = self._new_id_r.get(file_id)
594
old_path = self.base_tree.id2path(file_id)
597
if old_path in self.deleted:
599
return self.new_path(old_path)
601
def old_contents_id(self, file_id):
602
"""Return the id in the base_tree for the given file_id.
603
Return None if the file did not exist in base.
605
if self.contents_by_id:
606
if self.base_tree.has_id(file_id):
610
new_path = self.id2path(file_id)
611
return self.base_tree.path2id(new_path)
613
def get_file(self, file_id):
614
"""Return a file-like object containing the new contents of the
615
file given by file_id.
617
TODO: It might be nice if this actually generated an entry
618
in the text-store, so that the file contents would
621
base_id = self.old_contents_id(file_id)
622
if (base_id is not None and
623
base_id != self.base_tree.inventory.root.file_id):
624
patch_original = self.base_tree.get_file(base_id)
626
patch_original = None
627
file_patch = self.patches.get(self.id2path(file_id))
628
if file_patch is None:
629
if (patch_original is None and
630
self.get_kind(file_id) == 'directory'):
632
if patch_original is None:
633
raise AssertionError("None: %s" % file_id)
634
return patch_original
636
if file_patch.startswith('\\'):
638
'Malformed patch for %s, %r' % (file_id, file_patch))
639
return patched_file(file_patch, patch_original)
641
def get_symlink_target(self, file_id):
642
new_path = self.id2path(file_id)
644
return self._targets[new_path]
646
return self.base_tree.get_symlink_target(file_id)
648
def get_kind(self, file_id):
649
if file_id in self._kinds:
650
return self._kinds[file_id]
651
return self.base_tree.inventory[file_id].kind
653
def is_executable(self, file_id):
654
path = self.id2path(file_id)
655
if path in self._executable:
656
return self._executable[path]
658
return self.base_tree.inventory[file_id].executable
660
def get_last_changed(self, file_id):
661
path = self.id2path(file_id)
662
if path in self._last_changed:
663
return self._last_changed[path]
664
return self.base_tree.inventory[file_id].revision
666
def get_size_and_sha1(self, file_id):
667
"""Return the size and sha1 hash of the given file id.
668
If the file was not locally modified, this is extracted
669
from the base_tree. Rather than re-reading the file.
671
new_path = self.id2path(file_id)
674
if new_path not in self.patches:
675
# If the entry does not have a patch, then the
676
# contents must be the same as in the base_tree
677
ie = self.base_tree.inventory[file_id]
678
if ie.text_size is None:
679
return ie.text_size, ie.text_sha1
680
return int(ie.text_size), ie.text_sha1
681
fileobj = self.get_file(file_id)
682
content = fileobj.read()
683
return len(content), sha_string(content)
685
def _get_inventory(self):
686
"""Build up the inventory entry for the BundleTree.
688
This need to be called before ever accessing self.inventory
690
from os.path import dirname, basename
691
base_inv = self.base_tree.inventory
692
inv = Inventory(None, self.revision_id)
694
def add_entry(file_id):
695
path = self.id2path(file_id)
701
parent_path = dirname(path)
702
parent_id = self.path2id(parent_path)
704
kind = self.get_kind(file_id)
705
revision_id = self.get_last_changed(file_id)
707
name = basename(path)
708
if kind == 'directory':
709
ie = InventoryDirectory(file_id, name, parent_id)
711
ie = InventoryFile(file_id, name, parent_id)
712
ie.executable = self.is_executable(file_id)
713
elif kind == 'symlink':
714
ie = InventoryLink(file_id, name, parent_id)
715
ie.symlink_target = self.get_symlink_target(file_id)
716
ie.revision = revision_id
719
ie.text_size, ie.text_sha1 = self.get_size_and_sha1(file_id)
720
if ie.text_size is None:
722
'Got a text_size of None for file_id %r' % file_id)
725
sorted_entries = self.sorted_path_id()
726
for path, file_id in sorted_entries:
731
# Have to overload the inherited inventory property
732
# because _get_inventory is only called in the parent.
733
# Reading the docs, property() objects do not use
734
# overloading, they use the function as it was defined
736
inventory = property(_get_inventory)
739
for path, entry in self.inventory.iter_entries():
742
def sorted_path_id(self):
744
for result in self._new_id.iteritems():
746
for id in self.base_tree:
747
path = self.id2path(id)
750
paths.append((path, id))
755
def patched_file(file_patch, original):
756
"""Produce a file-like object with the patched version of a text"""
757
from bzrlib.patches import iter_patched
758
from bzrlib.iterablefile import IterableFile
760
return IterableFile(())
761
# string.splitlines(True) also splits on '\r', but the iter_patched code
762
# only expects to iterate over '\n' style lines
763
return IterableFile(iter_patched(original,
764
StringIO(file_patch).readlines()))
added
removed
bzrlib/bundle/bundle_data.py
