1
# Copyright (C) 2005, 2006 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
from copy import deepcopy
18
from cStringIO import StringIO
19
from unittest import TestSuite
21
import bzrlib.bzrdir as bzrdir
22
from bzrlib.decorators import needs_read_lock, needs_write_lock
23
import bzrlib.errors as errors
24
from bzrlib.errors import InvalidRevisionId
25
import bzrlib.gpg as gpg
26
from bzrlib.graph import Graph
27
from bzrlib.inter import InterObject
28
from bzrlib.knit import KnitVersionedFile, KnitPlainFactory
29
from bzrlib.lockable_files import LockableFiles, TransportLock
30
from bzrlib.lockdir import LockDir
31
from bzrlib.osutils import safe_unicode
32
from bzrlib.revision import NULL_REVISION
33
from bzrlib.store.versioned import VersionedFileStore, WeaveStore
34
from bzrlib.store.text import TextStore
35
from bzrlib.symbol_versioning import *
36
from bzrlib.trace import mutter, note
37
from bzrlib.tree import RevisionTree
38
from bzrlib.tsort import topo_sort
39
from bzrlib.testament import Testament
40
from bzrlib.tree import EmptyTree
42
from bzrlib.weave import WeaveFile
46
class Repository(object):
47
"""Repository holding history for one or more branches.
49
The repository holds and retrieves historical information including
50
revisions and file history. It's normally accessed only by the Branch,
51
which views a particular line of development through that history.
53
The Repository builds on top of Stores and a Transport, which respectively
54
describe the disk data format and the way of accessing the (possibly
59
def add_inventory(self, revid, inv, parents):
60
"""Add the inventory inv to the repository as revid.
62
:param parents: The revision ids of the parents that revid
63
is known to have and are in the repository already.
65
returns the sha1 of the serialized inventory.
67
inv_text = bzrlib.xml5.serializer_v5.write_inventory_to_string(inv)
68
inv_sha1 = bzrlib.osutils.sha_string(inv_text)
69
inv_vf = self.control_weaves.get_weave('inventory',
70
self.get_transaction())
71
inv_vf.add_lines(revid, parents, bzrlib.osutils.split_lines(inv_text))
75
def add_revision(self, rev_id, rev, inv=None, config=None):
76
"""Add rev to the revision store as rev_id.
78
:param rev_id: the revision id to use.
79
:param rev: The revision object.
80
:param inv: The inventory for the revision. if None, it will be looked
81
up in the inventory storer
82
:param config: If None no digital signature will be created.
83
If supplied its signature_needed method will be used
84
to determine if a signature should be made.
86
if config is not None and config.signature_needed():
88
inv = self.get_inventory(rev_id)
89
plaintext = Testament(rev, inv).as_short_text()
90
self.store_revision_signature(
91
gpg.GPGStrategy(config), plaintext, rev_id)
92
if not rev_id in self.get_inventory_weave():
94
raise errors.WeaveRevisionNotPresent(rev_id,
95
self.get_inventory_weave())
97
# yes, this is not suitable for adding with ghosts.
98
self.add_inventory(rev_id, inv, rev.parent_ids)
99
self._revision_store.add_revision(rev, self.get_transaction())
102
def _all_possible_ids(self):
103
"""Return all the possible revisions that we could find."""
104
return self.get_inventory_weave().versions()
107
def all_revision_ids(self):
108
"""Returns a list of all the revision ids in the repository.
110
These are in as much topological order as the underlying store can
111
present: for weaves ghosts may lead to a lack of correctness until
112
the reweave updates the parents list.
114
if self._revision_store.text_store.listable():
115
return self._revision_store.all_revision_ids(self.get_transaction())
116
result = self._all_possible_ids()
117
return self._eliminate_revisions_not_present(result)
120
def _eliminate_revisions_not_present(self, revision_ids):
121
"""Check every revision id in revision_ids to see if we have it.
123
Returns a set of the present revisions.
126
for id in revision_ids:
127
if self.has_revision(id):
132
def create(a_bzrdir):
133
"""Construct the current default format repository in a_bzrdir."""
134
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
136
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
137
"""instantiate a Repository.
139
:param _format: The format of the repository on disk.
140
:param a_bzrdir: The BzrDir of the repository.
142
In the future we will have a single api for all stores for
143
getting file texts, inventories and revisions, then
144
this construct will accept instances of those things.
146
super(Repository, self).__init__()
147
self._format = _format
148
# the following are part of the public API for Repository:
149
self.bzrdir = a_bzrdir
150
self.control_files = control_files
151
self._revision_store = _revision_store
152
self.text_store = text_store
153
# backwards compatability
154
self.weave_store = text_store
155
# not right yet - should be more semantically clear ?
157
self.control_store = control_store
158
self.control_weaves = control_store
159
# TODO: make sure to construct the right store classes, etc, depending
160
# on whether escaping is required.
162
def lock_write(self):
163
self.control_files.lock_write()
166
self.control_files.lock_read()
169
return self.control_files.is_locked()
172
def missing_revision_ids(self, other, revision_id=None):
173
"""Return the revision ids that other has that this does not.
175
These are returned in topological order.
177
revision_id: only return revision ids included by revision_id.
179
return InterRepository.get(other, self).missing_revision_ids(revision_id)
183
"""Open the repository rooted at base.
185
For instance, if the repository is at URL/.bzr/repository,
186
Repository.open(URL) -> a Repository instance.
188
control = bzrlib.bzrdir.BzrDir.open(base)
189
return control.open_repository()
191
def copy_content_into(self, destination, revision_id=None, basis=None):
192
"""Make a complete copy of the content in self into destination.
194
This is a destructive operation! Do not use it on existing
197
return InterRepository.get(self, destination).copy_content(revision_id, basis)
199
def fetch(self, source, revision_id=None, pb=None):
200
"""Fetch the content required to construct revision_id from source.
202
If revision_id is None all content is copied.
204
return InterRepository.get(source, self).fetch(revision_id=revision_id,
208
self.control_files.unlock()
211
def clone(self, a_bzrdir, revision_id=None, basis=None):
212
"""Clone this repository into a_bzrdir using the current format.
214
Currently no check is made that the format of this repository and
215
the bzrdir format are compatible. FIXME RBC 20060201.
217
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
218
# use target default format.
219
result = a_bzrdir.create_repository()
220
# FIXME RBC 20060209 split out the repository type to avoid this check ?
221
elif isinstance(a_bzrdir._format,
222
(bzrlib.bzrdir.BzrDirFormat4,
223
bzrlib.bzrdir.BzrDirFormat5,
224
bzrlib.bzrdir.BzrDirFormat6)):
225
result = a_bzrdir.open_repository()
227
result = self._format.initialize(a_bzrdir, shared=self.is_shared())
228
self.copy_content_into(result, revision_id, basis)
232
def has_revision(self, revision_id):
233
"""True if this repository has a copy of the revision."""
234
return self._revision_store.has_revision_id(revision_id,
235
self.get_transaction())
238
def get_revision_reconcile(self, revision_id):
239
"""'reconcile' helper routine that allows access to a revision always.
241
This variant of get_revision does not cross check the weave graph
242
against the revision one as get_revision does: but it should only
243
be used by reconcile, or reconcile-alike commands that are correcting
244
or testing the revision graph.
246
if not revision_id or not isinstance(revision_id, basestring):
247
raise InvalidRevisionId(revision_id=revision_id, branch=self)
248
return self._revision_store.get_revision(revision_id,
249
self.get_transaction())
252
def get_revision_xml(self, revision_id):
253
rev = self.get_revision(revision_id)
255
# the current serializer..
256
self._revision_store._serializer.write_revision(rev, rev_tmp)
258
return rev_tmp.getvalue()
261
def get_revision(self, revision_id):
262
"""Return the Revision object for a named revision"""
263
r = self.get_revision_reconcile(revision_id)
264
# weave corruption can lead to absent revision markers that should be
266
# the following test is reasonably cheap (it needs a single weave read)
267
# and the weave is cached in read transactions. In write transactions
268
# it is not cached but typically we only read a small number of
269
# revisions. For knits when they are introduced we will probably want
270
# to ensure that caching write transactions are in use.
271
inv = self.get_inventory_weave()
272
self._check_revision_parents(r, inv)
275
def _check_revision_parents(self, revision, inventory):
276
"""Private to Repository and Fetch.
278
This checks the parentage of revision in an inventory weave for
279
consistency and is only applicable to inventory-weave-for-ancestry
280
using repository formats & fetchers.
282
weave_parents = inventory.get_parents(revision.revision_id)
283
weave_names = inventory.versions()
284
for parent_id in revision.parent_ids:
285
if parent_id in weave_names:
286
# this parent must not be a ghost.
287
if not parent_id in weave_parents:
289
raise errors.CorruptRepository(self)
292
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
293
signature = gpg_strategy.sign(plaintext)
294
self._revision_store.add_revision_signature_text(revision_id,
296
self.get_transaction())
298
def fileid_involved_between_revs(self, from_revid, to_revid):
299
"""Find file_id(s) which are involved in the changes between revisions.
301
This determines the set of revisions which are involved, and then
302
finds all file ids affected by those revisions.
304
w = self.get_inventory_weave()
305
from_set = set(w.get_ancestry(from_revid))
306
to_set = set(w.get_ancestry(to_revid))
307
changed = to_set.difference(from_set)
308
return self._fileid_involved_by_set(changed)
310
def fileid_involved(self, last_revid=None):
311
"""Find all file_ids modified in the ancestry of last_revid.
313
:param last_revid: If None, last_revision() will be used.
315
w = self.get_inventory_weave()
317
changed = set(w.versions())
319
changed = set(w.get_ancestry(last_revid))
320
return self._fileid_involved_by_set(changed)
322
def fileid_involved_by_set(self, changes):
323
"""Find all file_ids modified by the set of revisions passed in.
325
:param changes: A set() of revision ids
327
# TODO: jam 20060119 This line does *nothing*, remove it.
328
# or better yet, change _fileid_involved_by_set so
329
# that it takes the inventory weave, rather than
330
# pulling it out by itself.
331
return self._fileid_involved_by_set(changes)
333
def _fileid_involved_by_set(self, changes):
334
"""Find the set of file-ids affected by the set of revisions.
336
:param changes: A set() of revision ids.
337
:return: A set() of file ids.
339
This peaks at the Weave, interpreting each line, looking to
340
see if it mentions one of the revisions. And if so, includes
341
the file id mentioned.
342
This expects both the Weave format, and the serialization
343
to have a single line per file/directory, and to have
344
fileid="" and revision="" on that line.
346
assert isinstance(self._format, (RepositoryFormat5,
349
RepositoryFormatKnit1)), \
350
"fileid_involved only supported for branches which store inventory as unnested xml"
352
w = self.get_inventory_weave()
355
# this code needs to read every line in every inventory for the
356
# inventories [changes]. Seeing a line twice is ok. Seeing a line
357
# not pesent in one of those inventories is unnecessary and not
358
# harmful because we are filtering by the revision id marker in the
359
# inventory lines to only select file ids altered in one of those
360
# revisions. We dont need to see all lines in the inventory because
361
# only those added in an inventory in rev X can contain a revision=X
363
for line in w.iter_lines_added_or_present_in_versions(changes):
364
start = line.find('file_id="')+9
365
if start < 9: continue
366
end = line.find('"', start)
368
file_id = _unescape_xml(line[start:end])
370
# check if file_id is already present
371
if file_id in file_ids: continue
373
start = line.find('revision="')+10
374
if start < 10: continue
375
end = line.find('"', start)
377
revision_id = _unescape_xml(line[start:end])
378
if revision_id in changes:
379
file_ids.add(file_id)
383
def get_inventory_weave(self):
384
return self.control_weaves.get_weave('inventory',
385
self.get_transaction())
388
def get_inventory(self, revision_id):
389
"""Get Inventory object by hash."""
390
xml = self.get_inventory_xml(revision_id)
391
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
394
def get_inventory_xml(self, revision_id):
395
"""Get inventory XML as a file object."""
397
assert isinstance(revision_id, basestring), type(revision_id)
398
iw = self.get_inventory_weave()
399
return iw.get_text(revision_id)
401
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
404
def get_inventory_sha1(self, revision_id):
405
"""Return the sha1 hash of the inventory entry
407
return self.get_revision(revision_id).inventory_sha1
410
def get_revision_graph(self, revision_id=None):
411
"""Return a dictionary containing the revision graph.
413
:return: a dictionary of revision_id->revision_parents_list.
415
weave = self.get_inventory_weave()
416
all_revisions = self._eliminate_revisions_not_present(weave.versions())
417
entire_graph = dict([(node, weave.get_parents(node)) for
418
node in all_revisions])
419
if revision_id is None:
421
elif revision_id not in entire_graph:
422
raise errors.NoSuchRevision(self, revision_id)
424
# add what can be reached from revision_id
426
pending = set([revision_id])
427
while len(pending) > 0:
429
result[node] = entire_graph[node]
430
for revision_id in result[node]:
431
if revision_id not in result:
432
pending.add(revision_id)
436
def get_revision_graph_with_ghosts(self, revision_ids=None):
437
"""Return a graph of the revisions with ghosts marked as applicable.
439
:param revision_ids: an iterable of revisions to graph or None for all.
440
:return: a Graph object with the graph reachable from revision_ids.
444
pending = set(self.all_revision_ids())
447
pending = set(revision_ids)
448
required = set(revision_ids)
451
revision_id = pending.pop()
453
rev = self.get_revision(revision_id)
454
except errors.NoSuchRevision:
455
if revision_id in required:
458
result.add_ghost(revision_id)
460
for parent_id in rev.parent_ids:
461
# is this queued or done ?
462
if (parent_id not in pending and
463
parent_id not in done):
465
pending.add(parent_id)
466
result.add_node(revision_id, rev.parent_ids)
467
done.add(revision_id)
471
def get_revision_inventory(self, revision_id):
472
"""Return inventory of a past revision."""
473
# TODO: Unify this with get_inventory()
474
# bzr 0.0.6 and later imposes the constraint that the inventory_id
475
# must be the same as its revision, so this is trivial.
476
if revision_id is None:
477
# This does not make sense: if there is no revision,
478
# then it is the current tree inventory surely ?!
479
# and thus get_root_id() is something that looks at the last
480
# commit on the branch, and the get_root_id is an inventory check.
481
raise NotImplementedError
482
# return Inventory(self.get_root_id())
484
return self.get_inventory(revision_id)
488
"""Return True if this repository is flagged as a shared repository."""
489
raise NotImplementedError(self.is_shared)
493
"""Reconcile this repository."""
494
from bzrlib.reconcile import RepoReconciler
495
reconciler = RepoReconciler(self)
496
reconciler.reconcile()
500
def revision_tree(self, revision_id):
501
"""Return Tree for a revision on this branch.
503
`revision_id` may be None for the null revision, in which case
504
an `EmptyTree` is returned."""
505
# TODO: refactor this to use an existing revision object
506
# so we don't need to read it in twice.
507
if revision_id is None or revision_id == NULL_REVISION:
510
inv = self.get_revision_inventory(revision_id)
511
return RevisionTree(self, inv, revision_id)
514
def get_ancestry(self, revision_id):
515
"""Return a list of revision-ids integrated by a revision.
517
This is topologically sorted.
519
if revision_id is None:
521
if not self.has_revision(revision_id):
522
raise errors.NoSuchRevision(self, revision_id)
523
w = self.get_inventory_weave()
524
candidates = w.get_ancestry(revision_id)
525
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
528
def print_file(self, file, revision_id):
529
"""Print `file` to stdout.
531
FIXME RBC 20060125 as John Meinel points out this is a bad api
532
- it writes to stdout, it assumes that that is valid etc. Fix
533
by creating a new more flexible convenience function.
535
tree = self.revision_tree(revision_id)
536
# use inventory as it was in that revision
537
file_id = tree.inventory.path2id(file)
539
raise BzrError("%r is not present in revision %s" % (file, revno))
541
revno = self.revision_id_to_revno(revision_id)
542
except errors.NoSuchRevision:
543
# TODO: This should not be BzrError,
544
# but NoSuchFile doesn't fit either
545
raise BzrError('%r is not present in revision %s'
546
% (file, revision_id))
548
raise BzrError('%r is not present in revision %s'
550
tree.print_file(file_id)
552
def get_transaction(self):
553
return self.control_files.get_transaction()
555
def revision_parents(self, revid):
556
return self.get_inventory_weave().parent_names(revid)
559
def set_make_working_trees(self, new_value):
560
"""Set the policy flag for making working trees when creating branches.
562
This only applies to branches that use this repository.
564
The default is 'True'.
565
:param new_value: True to restore the default, False to disable making
568
raise NotImplementedError(self.set_make_working_trees)
570
def make_working_trees(self):
571
"""Returns the policy for making working trees on new branches."""
572
raise NotImplementedError(self.make_working_trees)
575
def sign_revision(self, revision_id, gpg_strategy):
576
plaintext = Testament.from_revision(self, revision_id).as_short_text()
577
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
580
def has_signature_for_revision_id(self, revision_id):
581
"""Query for a revision signature for revision_id in the repository."""
582
return self._revision_store.has_signature(revision_id,
583
self.get_transaction())
586
def get_signature_text(self, revision_id):
587
"""Return the text for a signature."""
588
return self._revision_store.get_signature_text(revision_id,
589
self.get_transaction())
592
class AllInOneRepository(Repository):
593
"""Legacy support - the repository behaviour for all-in-one branches."""
595
def __init__(self, _format, a_bzrdir, _revision_store, control_store, text_store):
596
# we reuse one control files instance.
597
dir_mode = a_bzrdir._control_files._dir_mode
598
file_mode = a_bzrdir._control_files._file_mode
600
def get_store(name, compressed=True, prefixed=False):
601
# FIXME: This approach of assuming stores are all entirely compressed
602
# or entirely uncompressed is tidy, but breaks upgrade from
603
# some existing branches where there's a mixture; we probably
604
# still want the option to look for both.
605
relpath = a_bzrdir._control_files._escape(name)
606
store = TextStore(a_bzrdir._control_files._transport.clone(relpath),
607
prefixed=prefixed, compressed=compressed,
610
#if self._transport.should_cache():
611
# cache_path = os.path.join(self.cache_root, name)
612
# os.mkdir(cache_path)
613
# store = bzrlib.store.CachedStore(store, cache_path)
616
# not broken out yet because the controlweaves|inventory_store
617
# and text_store | weave_store bits are still different.
618
if isinstance(_format, RepositoryFormat4):
619
# cannot remove these - there is still no consistent api
620
# which allows access to this old info.
621
self.inventory_store = get_store('inventory-store')
622
text_store = get_store('text-store')
623
super(AllInOneRepository, self).__init__(_format, a_bzrdir, a_bzrdir._control_files, _revision_store, control_store, text_store)
627
"""AllInOne repositories cannot be shared."""
631
def set_make_working_trees(self, new_value):
632
"""Set the policy flag for making working trees when creating branches.
634
This only applies to branches that use this repository.
636
The default is 'True'.
637
:param new_value: True to restore the default, False to disable making
640
raise NotImplementedError(self.set_make_working_trees)
642
def make_working_trees(self):
643
"""Returns the policy for making working trees on new branches."""
647
class MetaDirRepository(Repository):
648
"""Repositories in the new meta-dir layout."""
650
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
651
super(MetaDirRepository, self).__init__(_format,
658
dir_mode = self.control_files._dir_mode
659
file_mode = self.control_files._file_mode
663
"""Return True if this repository is flagged as a shared repository."""
664
return self.control_files._transport.has('shared-storage')
667
def set_make_working_trees(self, new_value):
668
"""Set the policy flag for making working trees when creating branches.
670
This only applies to branches that use this repository.
672
The default is 'True'.
673
:param new_value: True to restore the default, False to disable making
678
self.control_files._transport.delete('no-working-trees')
679
except errors.NoSuchFile:
682
self.control_files.put_utf8('no-working-trees', '')
684
def make_working_trees(self):
685
"""Returns the policy for making working trees on new branches."""
686
return not self.control_files._transport.has('no-working-trees')
689
class KnitRepository(MetaDirRepository):
690
"""Knit format repository."""
693
def all_revision_ids(self):
694
"""See Repository.all_revision_ids()."""
695
return self._revision_store.all_revision_ids(self.get_transaction())
697
def fileid_involved_between_revs(self, from_revid, to_revid):
698
"""Find file_id(s) which are involved in the changes between revisions.
700
This determines the set of revisions which are involved, and then
701
finds all file ids affected by those revisions.
703
vf = self._get_revision_vf()
704
from_set = set(vf.get_ancestry(from_revid))
705
to_set = set(vf.get_ancestry(to_revid))
706
changed = to_set.difference(from_set)
707
return self._fileid_involved_by_set(changed)
709
def fileid_involved(self, last_revid=None):
710
"""Find all file_ids modified in the ancestry of last_revid.
712
:param last_revid: If None, last_revision() will be used.
715
changed = set(self.all_revision_ids())
717
changed = set(self.get_ancestry(last_revid))
720
return self._fileid_involved_by_set(changed)
723
def get_ancestry(self, revision_id):
724
"""Return a list of revision-ids integrated by a revision.
726
This is topologically sorted.
728
if revision_id is None:
730
vf = self._get_revision_vf()
732
return [None] + vf.get_ancestry(revision_id)
733
except errors.RevisionNotPresent:
734
raise errors.NoSuchRevision(self, revision_id)
737
def get_revision(self, revision_id):
738
"""Return the Revision object for a named revision"""
739
return self.get_revision_reconcile(revision_id)
742
def get_revision_graph(self, revision_id=None):
743
"""Return a dictionary containing the revision graph.
745
:return: a dictionary of revision_id->revision_parents_list.
747
weave = self._get_revision_vf()
748
entire_graph = weave.get_graph()
749
if revision_id is None:
750
return weave.get_graph()
751
elif revision_id not in weave:
752
raise errors.NoSuchRevision(self, revision_id)
754
# add what can be reached from revision_id
756
pending = set([revision_id])
757
while len(pending) > 0:
759
result[node] = weave.get_parents(node)
760
for revision_id in result[node]:
761
if revision_id not in result:
762
pending.add(revision_id)
766
def get_revision_graph_with_ghosts(self, revision_ids=None):
767
"""Return a graph of the revisions with ghosts marked as applicable.
769
:param revision_ids: an iterable of revisions to graph or None for all.
770
:return: a Graph object with the graph reachable from revision_ids.
773
vf = self._get_revision_vf()
774
versions = set(vf.versions())
776
pending = set(self.all_revision_ids())
779
pending = set(revision_ids)
780
required = set(revision_ids)
783
revision_id = pending.pop()
784
if not revision_id in versions:
785
if revision_id in required:
786
raise errors.NoSuchRevision(self, revision_id)
788
result.add_ghost(revision_id)
789
# mark it as done so we dont try for it again.
790
done.add(revision_id)
792
parent_ids = vf.get_parents_with_ghosts(revision_id)
793
for parent_id in parent_ids:
794
# is this queued or done ?
795
if (parent_id not in pending and
796
parent_id not in done):
798
pending.add(parent_id)
799
result.add_node(revision_id, parent_ids)
800
done.add(revision_id)
803
def _get_revision_vf(self):
804
""":return: a versioned file containing the revisions."""
805
vf = self._revision_store.get_revision_file(self.get_transaction())
810
"""Reconcile this repository."""
811
from bzrlib.reconcile import KnitReconciler
812
reconciler = KnitReconciler(self)
813
reconciler.reconcile()
816
def revision_parents(self, revid):
817
return self._get_revision_vf().get_parents(rev_id)
819
class RepositoryFormat(object):
820
"""A repository format.
822
Formats provide three things:
823
* An initialization routine to construct repository data on disk.
824
* a format string which is used when the BzrDir supports versioned
826
* an open routine which returns a Repository instance.
828
Formats are placed in an dict by their format string for reference
829
during opening. These should be subclasses of RepositoryFormat
832
Once a format is deprecated, just deprecate the initialize and open
833
methods on the format class. Do not deprecate the object, as the
834
object will be created every system load.
836
Common instance attributes:
837
_matchingbzrdir - the bzrdir format that the repository format was
838
originally written to work with. This can be used if manually
839
constructing a bzrdir and repository, or more commonly for test suite
843
_default_format = None
844
"""The default format used for new repositories."""
847
"""The known formats."""
850
def find_format(klass, a_bzrdir):
851
"""Return the format for the repository object in a_bzrdir."""
853
transport = a_bzrdir.get_repository_transport(None)
854
format_string = transport.get("format").read()
855
return klass._formats[format_string]
856
except errors.NoSuchFile:
857
raise errors.NoRepositoryPresent(a_bzrdir)
859
raise errors.UnknownFormatError(format_string)
861
def _get_control_store(self, repo_transport, control_files):
862
"""Return the control store for this repository."""
863
raise NotImplementedError(self._get_control_store)
866
def get_default_format(klass):
867
"""Return the current default format."""
868
return klass._default_format
870
def get_format_string(self):
871
"""Return the ASCII format string that identifies this format.
873
Note that in pre format ?? repositories the format string is
874
not permitted nor written to disk.
876
raise NotImplementedError(self.get_format_string)
878
def get_format_description(self):
879
"""Return the short desciption for this format."""
880
raise NotImplementedError(self.get_format_description)
882
def _get_revision_store(self, repo_transport, control_files):
883
"""Return the revision store object for this a_bzrdir."""
884
raise NotImplementedError(self._get_revision_store)
886
def _get_text_rev_store(self,
893
"""Common logic for getting a revision store for a repository.
895
see self._get_revision_store for the subclass-overridable method to
896
get the store for a repository.
898
from bzrlib.store.revision.text import TextRevisionStore
899
dir_mode = control_files._dir_mode
900
file_mode = control_files._file_mode
901
text_store =TextStore(transport.clone(name),
903
compressed=compressed,
906
_revision_store = TextRevisionStore(text_store, serializer)
907
return _revision_store
909
def _get_versioned_file_store(self,
914
versionedfile_class=WeaveFile,
916
weave_transport = control_files._transport.clone(name)
917
dir_mode = control_files._dir_mode
918
file_mode = control_files._file_mode
919
return VersionedFileStore(weave_transport, prefixed=prefixed,
922
versionedfile_class=versionedfile_class,
925
def initialize(self, a_bzrdir, shared=False):
926
"""Initialize a repository of this format in a_bzrdir.
928
:param a_bzrdir: The bzrdir to put the new repository in it.
929
:param shared: The repository should be initialized as a sharable one.
931
This may raise UninitializableFormat if shared repository are not
932
compatible the a_bzrdir.
935
def is_supported(self):
936
"""Is this format supported?
938
Supported formats must be initializable and openable.
939
Unsupported formats may not support initialization or committing or
940
some other features depending on the reason for not being supported.
944
def open(self, a_bzrdir, _found=False):
945
"""Return an instance of this format for the bzrdir a_bzrdir.
947
_found is a private parameter, do not use it.
949
raise NotImplementedError(self.open)
952
def register_format(klass, format):
953
klass._formats[format.get_format_string()] = format
956
def set_default_format(klass, format):
957
klass._default_format = format
960
def unregister_format(klass, format):
961
assert klass._formats[format.get_format_string()] is format
962
del klass._formats[format.get_format_string()]
965
class PreSplitOutRepositoryFormat(RepositoryFormat):
966
"""Base class for the pre split out repository formats."""
968
def initialize(self, a_bzrdir, shared=False, _internal=False):
969
"""Create a weave repository.
971
TODO: when creating split out bzr branch formats, move this to a common
972
base for Format5, Format6. or something like that.
974
from bzrlib.weavefile import write_weave_v5
975
from bzrlib.weave import Weave
978
raise errors.IncompatibleFormat(self, a_bzrdir._format)
981
# always initialized when the bzrdir is.
982
return self.open(a_bzrdir, _found=True)
984
# Create an empty weave
986
bzrlib.weavefile.write_weave_v5(Weave(), sio)
987
empty_weave = sio.getvalue()
989
mutter('creating repository in %s.', a_bzrdir.transport.base)
990
dirs = ['revision-store', 'weaves']
991
files = [('inventory.weave', StringIO(empty_weave)),
994
# FIXME: RBC 20060125 dont peek under the covers
995
# NB: no need to escape relative paths that are url safe.
996
control_files = LockableFiles(a_bzrdir.transport, 'branch-lock',
998
control_files.create_lock()
999
control_files.lock_write()
1000
control_files._transport.mkdir_multi(dirs,
1001
mode=control_files._dir_mode)
1003
for file, content in files:
1004
control_files.put(file, content)
1006
control_files.unlock()
1007
return self.open(a_bzrdir, _found=True)
1009
def _get_control_store(self, repo_transport, control_files):
1010
"""Return the control store for this repository."""
1011
return self._get_versioned_file_store('',
1016
def _get_text_store(self, transport, control_files):
1017
"""Get a store for file texts for this format."""
1018
raise NotImplementedError(self._get_text_store)
1020
def open(self, a_bzrdir, _found=False):
1021
"""See RepositoryFormat.open()."""
1023
# we are being called directly and must probe.
1024
raise NotImplementedError
1026
repo_transport = a_bzrdir.get_repository_transport(None)
1027
control_files = a_bzrdir._control_files
1028
text_store = self._get_text_store(repo_transport, control_files)
1029
control_store = self._get_control_store(repo_transport, control_files)
1030
_revision_store = self._get_revision_store(repo_transport, control_files)
1031
return AllInOneRepository(_format=self,
1033
_revision_store=_revision_store,
1034
control_store=control_store,
1035
text_store=text_store)
1038
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1039
"""Bzr repository format 4.
1041
This repository format has:
1043
- TextStores for texts, inventories,revisions.
1045
This format is deprecated: it indexes texts using a text id which is
1046
removed in format 5; initializationa and write support for this format
1051
super(RepositoryFormat4, self).__init__()
1052
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat4()
1054
def get_format_description(self):
1055
"""See RepositoryFormat.get_format_description()."""
1056
return "Repository format 4"
1058
def initialize(self, url, shared=False, _internal=False):
1059
"""Format 4 branches cannot be created."""
1060
raise errors.UninitializableFormat(self)
1062
def is_supported(self):
1063
"""Format 4 is not supported.
1065
It is not supported because the model changed from 4 to 5 and the
1066
conversion logic is expensive - so doing it on the fly was not
1071
def _get_control_store(self, repo_transport, control_files):
1072
"""Format 4 repositories have no formal control store at this point.
1074
This will cause any control-file-needing apis to fail - this is desired.
1078
def _get_revision_store(self, repo_transport, control_files):
1079
"""See RepositoryFormat._get_revision_store()."""
1080
from bzrlib.xml4 import serializer_v4
1081
return self._get_text_rev_store(repo_transport,
1084
serializer=serializer_v4)
1086
def _get_text_store(self, transport, control_files):
1087
"""See RepositoryFormat._get_text_store()."""
1090
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1091
"""Bzr control format 5.
1093
This repository format has:
1094
- weaves for file texts and inventory
1096
- TextStores for revisions and signatures.
1100
super(RepositoryFormat5, self).__init__()
1101
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat5()
1103
def get_format_description(self):
1104
"""See RepositoryFormat.get_format_description()."""
1105
return "Weave repository format 5"
1107
def _get_revision_store(self, repo_transport, control_files):
1108
"""See RepositoryFormat._get_revision_store()."""
1109
"""Return the revision store object for this a_bzrdir."""
1110
return self._get_text_rev_store(repo_transport,
1115
def _get_text_store(self, transport, control_files):
1116
"""See RepositoryFormat._get_text_store()."""
1117
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1120
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1121
"""Bzr control format 6.
1123
This repository format has:
1124
- weaves for file texts and inventory
1125
- hash subdirectory based stores.
1126
- TextStores for revisions and signatures.
1130
super(RepositoryFormat6, self).__init__()
1131
self._matchingbzrdir = bzrlib.bzrdir.BzrDirFormat6()
1133
def get_format_description(self):
1134
"""See RepositoryFormat.get_format_description()."""
1135
return "Weave repository format 6"
1137
def _get_revision_store(self, repo_transport, control_files):
1138
"""See RepositoryFormat._get_revision_store()."""
1139
return self._get_text_rev_store(repo_transport,
1145
def _get_text_store(self, transport, control_files):
1146
"""See RepositoryFormat._get_text_store()."""
1147
return self._get_versioned_file_store('weaves', transport, control_files)
1150
class MetaDirRepositoryFormat(RepositoryFormat):
1151
"""Common base class for the new repositories using the metadir layour."""
1154
super(MetaDirRepositoryFormat, self).__init__()
1155
self._matchingbzrdir = bzrlib.bzrdir.BzrDirMetaFormat1()
1157
def _create_control_files(self, a_bzrdir):
1158
"""Create the required files and the initial control_files object."""
1159
# FIXME: RBC 20060125 dont peek under the covers
1160
# NB: no need to escape relative paths that are url safe.
1161
repository_transport = a_bzrdir.get_repository_transport(self)
1162
control_files = LockableFiles(repository_transport, 'lock', LockDir)
1163
control_files.create_lock()
1164
return control_files
1166
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
1167
"""Upload the initial blank content."""
1168
control_files = self._create_control_files(a_bzrdir)
1169
control_files.lock_write()
1171
control_files._transport.mkdir_multi(dirs,
1172
mode=control_files._dir_mode)
1173
for file, content in files:
1174
control_files.put(file, content)
1175
for file, content in utf8_files:
1176
control_files.put_utf8(file, content)
1178
control_files.put_utf8('shared-storage', '')
1180
control_files.unlock()
1183
class RepositoryFormat7(MetaDirRepositoryFormat):
1184
"""Bzr repository 7.
1186
This repository format has:
1187
- weaves for file texts and inventory
1188
- hash subdirectory based stores.
1189
- TextStores for revisions and signatures.
1190
- a format marker of its own
1191
- an optional 'shared-storage' flag
1192
- an optional 'no-working-trees' flag
1195
def _get_control_store(self, repo_transport, control_files):
1196
"""Return the control store for this repository."""
1197
return self._get_versioned_file_store('',
1202
def get_format_string(self):
1203
"""See RepositoryFormat.get_format_string()."""
1204
return "Bazaar-NG Repository format 7"
1206
def get_format_description(self):
1207
"""See RepositoryFormat.get_format_description()."""
1208
return "Weave repository format 7"
1210
def _get_revision_store(self, repo_transport, control_files):
1211
"""See RepositoryFormat._get_revision_store()."""
1212
return self._get_text_rev_store(repo_transport,
1219
def _get_text_store(self, transport, control_files):
1220
"""See RepositoryFormat._get_text_store()."""
1221
return self._get_versioned_file_store('weaves',
1225
def initialize(self, a_bzrdir, shared=False):
1226
"""Create a weave repository.
1228
:param shared: If true the repository will be initialized as a shared
1231
from bzrlib.weavefile import write_weave_v5
1232
from bzrlib.weave import Weave
1234
# Create an empty weave
1236
bzrlib.weavefile.write_weave_v5(Weave(), sio)
1237
empty_weave = sio.getvalue()
1239
mutter('creating repository in %s.', a_bzrdir.transport.base)
1240
dirs = ['revision-store', 'weaves']
1241
files = [('inventory.weave', StringIO(empty_weave)),
1243
utf8_files = [('format', self.get_format_string())]
1245
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1246
return self.open(a_bzrdir=a_bzrdir, _found=True)
1248
def open(self, a_bzrdir, _found=False, _override_transport=None):
1249
"""See RepositoryFormat.open().
1251
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1252
repository at a slightly different url
1253
than normal. I.e. during 'upgrade'.
1256
format = RepositoryFormat.find_format(a_bzrdir)
1257
assert format.__class__ == self.__class__
1258
if _override_transport is not None:
1259
repo_transport = _override_transport
1261
repo_transport = a_bzrdir.get_repository_transport(None)
1262
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1263
text_store = self._get_text_store(repo_transport, control_files)
1264
control_store = self._get_control_store(repo_transport, control_files)
1265
_revision_store = self._get_revision_store(repo_transport, control_files)
1266
return MetaDirRepository(_format=self,
1268
control_files=control_files,
1269
_revision_store=_revision_store,
1270
control_store=control_store,
1271
text_store=text_store)
1274
class RepositoryFormatKnit1(MetaDirRepositoryFormat):
1275
"""Bzr repository knit format 1.
1277
This repository format has:
1278
- knits for file texts and inventory
1279
- hash subdirectory based stores.
1280
- knits for revisions and signatures
1281
- TextStores for revisions and signatures.
1282
- a format marker of its own
1283
- an optional 'shared-storage' flag
1284
- an optional 'no-working-trees' flag
1287
This format was introduced in bzr 0.8.
1290
def _get_control_store(self, repo_transport, control_files):
1291
"""Return the control store for this repository."""
1292
return VersionedFileStore(
1295
file_mode=control_files._file_mode,
1296
versionedfile_class=KnitVersionedFile,
1297
versionedfile_kwargs={'factory':KnitPlainFactory()},
1300
def get_format_string(self):
1301
"""See RepositoryFormat.get_format_string()."""
1302
return "Bazaar-NG Knit Repository Format 1"
1304
def get_format_description(self):
1305
"""See RepositoryFormat.get_format_description()."""
1306
return "Knit repository format 1"
1308
def _get_revision_store(self, repo_transport, control_files):
1309
"""See RepositoryFormat._get_revision_store()."""
1310
from bzrlib.store.revision.knit import KnitRevisionStore
1311
versioned_file_store = VersionedFileStore(
1313
file_mode=control_files._file_mode,
1316
versionedfile_class=KnitVersionedFile,
1317
versionedfile_kwargs={'delta':False, 'factory':KnitPlainFactory()},
1320
return KnitRevisionStore(versioned_file_store)
1322
def _get_text_store(self, transport, control_files):
1323
"""See RepositoryFormat._get_text_store()."""
1324
return self._get_versioned_file_store('knits',
1327
versionedfile_class=KnitVersionedFile,
1330
def initialize(self, a_bzrdir, shared=False):
1331
"""Create a knit format 1 repository.
1333
:param a_bzrdir: bzrdir to contain the new repository; must already
1335
:param shared: If true the repository will be initialized as a shared
1338
mutter('creating repository in %s.', a_bzrdir.transport.base)
1339
dirs = ['revision-store', 'knits']
1341
utf8_files = [('format', self.get_format_string())]
1343
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1344
repo_transport = a_bzrdir.get_repository_transport(None)
1345
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1346
control_store = self._get_control_store(repo_transport, control_files)
1347
transaction = bzrlib.transactions.WriteTransaction()
1348
# trigger a write of the inventory store.
1349
control_store.get_weave_or_empty('inventory', transaction)
1350
_revision_store = self._get_revision_store(repo_transport, control_files)
1351
_revision_store.has_revision_id('A', transaction)
1352
_revision_store.get_signature_file(transaction)
1353
return self.open(a_bzrdir=a_bzrdir, _found=True)
1355
def open(self, a_bzrdir, _found=False, _override_transport=None):
1356
"""See RepositoryFormat.open().
1358
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1359
repository at a slightly different url
1360
than normal. I.e. during 'upgrade'.
1363
format = RepositoryFormat.find_format(a_bzrdir)
1364
assert format.__class__ == self.__class__
1365
if _override_transport is not None:
1366
repo_transport = _override_transport
1368
repo_transport = a_bzrdir.get_repository_transport(None)
1369
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1370
text_store = self._get_text_store(repo_transport, control_files)
1371
control_store = self._get_control_store(repo_transport, control_files)
1372
_revision_store = self._get_revision_store(repo_transport, control_files)
1373
return KnitRepository(_format=self,
1375
control_files=control_files,
1376
_revision_store=_revision_store,
1377
control_store=control_store,
1378
text_store=text_store)
1381
# formats which have no format string are not discoverable
1382
# and not independently creatable, so are not registered.
1383
RepositoryFormat.register_format(RepositoryFormat7())
1384
_default_format = RepositoryFormatKnit1()
1385
RepositoryFormat.register_format(_default_format)
1386
RepositoryFormat.set_default_format(_default_format)
1387
_legacy_formats = [RepositoryFormat4(),
1388
RepositoryFormat5(),
1389
RepositoryFormat6()]
1392
class InterRepository(InterObject):
1393
"""This class represents operations taking place between two repositories.
1395
Its instances have methods like copy_content and fetch, and contain
1396
references to the source and target repositories these operations can be
1399
Often we will provide convenience methods on 'repository' which carry out
1400
operations with another repository - they will always forward to
1401
InterRepository.get(other).method_name(parameters).
1405
"""The available optimised InterRepository types."""
1408
def copy_content(self, revision_id=None, basis=None):
1409
"""Make a complete copy of the content in self into destination.
1411
This is a destructive operation! Do not use it on existing
1414
:param revision_id: Only copy the content needed to construct
1415
revision_id and its parents.
1416
:param basis: Copy the needed data preferentially from basis.
1419
self.target.set_make_working_trees(self.source.make_working_trees())
1420
except NotImplementedError:
1422
# grab the basis available data
1423
if basis is not None:
1424
self.target.fetch(basis, revision_id=revision_id)
1425
# but dont bother fetching if we have the needed data now.
1426
if (revision_id not in (None, NULL_REVISION) and
1427
self.target.has_revision(revision_id)):
1429
self.target.fetch(self.source, revision_id=revision_id)
1431
def _double_lock(self, lock_source, lock_target):
1432
"""Take out too locks, rolling back the first if the second throws."""
1437
# we want to ensure that we don't leave source locked by mistake.
1438
# and any error on target should not confuse source.
1439
self.source.unlock()
1443
def fetch(self, revision_id=None, pb=None):
1444
"""Fetch the content required to construct revision_id.
1446
The content is copied from source to target.
1448
:param revision_id: if None all content is copied, if NULL_REVISION no
1450
:param pb: optional progress bar to use for progress reports. If not
1451
provided a default one will be created.
1453
Returns the copied revision count and the failed revisions in a tuple:
1456
from bzrlib.fetch import GenericRepoFetcher
1457
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1458
self.source, self.source._format, self.target, self.target._format)
1459
f = GenericRepoFetcher(to_repository=self.target,
1460
from_repository=self.source,
1461
last_revision=revision_id,
1463
return f.count_copied, f.failed_revisions
1465
def lock_read(self):
1466
"""Take out a logical read lock.
1468
This will lock the source branch and the target branch. The source gets
1469
a read lock and the target a read lock.
1471
self._double_lock(self.source.lock_read, self.target.lock_read)
1473
def lock_write(self):
1474
"""Take out a logical write lock.
1476
This will lock the source branch and the target branch. The source gets
1477
a read lock and the target a write lock.
1479
self._double_lock(self.source.lock_read, self.target.lock_write)
1482
def missing_revision_ids(self, revision_id=None):
1483
"""Return the revision ids that source has that target does not.
1485
These are returned in topological order.
1487
:param revision_id: only return revision ids included by this
1490
# generic, possibly worst case, slow code path.
1491
target_ids = set(self.target.all_revision_ids())
1492
if revision_id is not None:
1493
source_ids = self.source.get_ancestry(revision_id)
1494
assert source_ids.pop(0) == None
1496
source_ids = self.source.all_revision_ids()
1497
result_set = set(source_ids).difference(target_ids)
1498
# this may look like a no-op: its not. It preserves the ordering
1499
# other_ids had while only returning the members from other_ids
1500
# that we've decided we need.
1501
return [rev_id for rev_id in source_ids if rev_id in result_set]
1504
"""Release the locks on source and target."""
1506
self.target.unlock()
1508
self.source.unlock()
1511
class InterWeaveRepo(InterRepository):
1512
"""Optimised code paths between Weave based repositories."""
1514
_matching_repo_format = RepositoryFormat7()
1515
"""Repository format for testing with."""
1518
def is_compatible(source, target):
1519
"""Be compatible with known Weave formats.
1521
We dont test for the stores being of specific types becase that
1522
could lead to confusing results, and there is no need to be
1526
return (isinstance(source._format, (RepositoryFormat5,
1528
RepositoryFormat7)) and
1529
isinstance(target._format, (RepositoryFormat5,
1531
RepositoryFormat7)))
1532
except AttributeError:
1536
def copy_content(self, revision_id=None, basis=None):
1537
"""See InterRepository.copy_content()."""
1538
# weave specific optimised path:
1539
if basis is not None:
1540
# copy the basis in, then fetch remaining data.
1541
basis.copy_content_into(self.target, revision_id)
1542
# the basis copy_content_into could misset this.
1544
self.target.set_make_working_trees(self.source.make_working_trees())
1545
except NotImplementedError:
1547
self.target.fetch(self.source, revision_id=revision_id)
1550
self.target.set_make_working_trees(self.source.make_working_trees())
1551
except NotImplementedError:
1553
# FIXME do not peek!
1554
if self.source.control_files._transport.listable():
1555
pb = bzrlib.ui.ui_factory.nested_progress_bar()
1557
self.target.weave_store.copy_all_ids(
1558
self.source.weave_store,
1560
from_transaction=self.source.get_transaction(),
1561
to_transaction=self.target.get_transaction())
1562
pb.update('copying inventory', 0, 1)
1563
self.target.control_weaves.copy_multi(
1564
self.source.control_weaves, ['inventory'],
1565
from_transaction=self.source.get_transaction(),
1566
to_transaction=self.target.get_transaction())
1567
self.target._revision_store.text_store.copy_all_ids(
1568
self.source._revision_store.text_store,
1573
self.target.fetch(self.source, revision_id=revision_id)
1576
def fetch(self, revision_id=None, pb=None):
1577
"""See InterRepository.fetch()."""
1578
from bzrlib.fetch import GenericRepoFetcher
1579
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1580
self.source, self.source._format, self.target, self.target._format)
1581
f = GenericRepoFetcher(to_repository=self.target,
1582
from_repository=self.source,
1583
last_revision=revision_id,
1585
return f.count_copied, f.failed_revisions
1588
def missing_revision_ids(self, revision_id=None):
1589
"""See InterRepository.missing_revision_ids()."""
1590
# we want all revisions to satisfy revision_id in source.
1591
# but we dont want to stat every file here and there.
1592
# we want then, all revisions other needs to satisfy revision_id
1593
# checked, but not those that we have locally.
1594
# so the first thing is to get a subset of the revisions to
1595
# satisfy revision_id in source, and then eliminate those that
1596
# we do already have.
1597
# this is slow on high latency connection to self, but as as this
1598
# disk format scales terribly for push anyway due to rewriting
1599
# inventory.weave, this is considered acceptable.
1601
if revision_id is not None:
1602
source_ids = self.source.get_ancestry(revision_id)
1603
assert source_ids.pop(0) == None
1605
source_ids = self.source._all_possible_ids()
1606
source_ids_set = set(source_ids)
1607
# source_ids is the worst possible case we may need to pull.
1608
# now we want to filter source_ids against what we actually
1609
# have in target, but dont try to check for existence where we know
1610
# we do not have a revision as that would be pointless.
1611
target_ids = set(self.target._all_possible_ids())
1612
possibly_present_revisions = target_ids.intersection(source_ids_set)
1613
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
1614
required_revisions = source_ids_set.difference(actually_present_revisions)
1615
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
1616
if revision_id is not None:
1617
# we used get_ancestry to determine source_ids then we are assured all
1618
# revisions referenced are present as they are installed in topological order.
1619
# and the tip revision was validated by get_ancestry.
1620
return required_topo_revisions
1622
# if we just grabbed the possibly available ids, then
1623
# we only have an estimate of whats available and need to validate
1624
# that against the revision records.
1625
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1628
class InterKnitRepo(InterRepository):
1629
"""Optimised code paths between Knit based repositories."""
1631
_matching_repo_format = RepositoryFormatKnit1()
1632
"""Repository format for testing with."""
1635
def is_compatible(source, target):
1636
"""Be compatible with known Knit formats.
1638
We dont test for the stores being of specific types becase that
1639
could lead to confusing results, and there is no need to be
1643
return (isinstance(source._format, (RepositoryFormatKnit1)) and
1644
isinstance(target._format, (RepositoryFormatKnit1)))
1645
except AttributeError:
1649
def fetch(self, revision_id=None, pb=None):
1650
"""See InterRepository.fetch()."""
1651
from bzrlib.fetch import KnitRepoFetcher
1652
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1653
self.source, self.source._format, self.target, self.target._format)
1654
f = KnitRepoFetcher(to_repository=self.target,
1655
from_repository=self.source,
1656
last_revision=revision_id,
1658
return f.count_copied, f.failed_revisions
1661
def missing_revision_ids(self, revision_id=None):
1662
"""See InterRepository.missing_revision_ids()."""
1663
if revision_id is not None:
1664
source_ids = self.source.get_ancestry(revision_id)
1665
assert source_ids.pop(0) == None
1667
source_ids = self.source._all_possible_ids()
1668
source_ids_set = set(source_ids)
1669
# source_ids is the worst possible case we may need to pull.
1670
# now we want to filter source_ids against what we actually
1671
# have in target, but dont try to check for existence where we know
1672
# we do not have a revision as that would be pointless.
1673
target_ids = set(self.target._all_possible_ids())
1674
possibly_present_revisions = target_ids.intersection(source_ids_set)
1675
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
1676
required_revisions = source_ids_set.difference(actually_present_revisions)
1677
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
1678
if revision_id is not None:
1679
# we used get_ancestry to determine source_ids then we are assured all
1680
# revisions referenced are present as they are installed in topological order.
1681
# and the tip revision was validated by get_ancestry.
1682
return required_topo_revisions
1684
# if we just grabbed the possibly available ids, then
1685
# we only have an estimate of whats available and need to validate
1686
# that against the revision records.
1687
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1689
InterRepository.register_optimiser(InterWeaveRepo)
1690
InterRepository.register_optimiser(InterKnitRepo)
1693
class RepositoryTestProviderAdapter(object):
1694
"""A tool to generate a suite testing multiple repository formats at once.
1696
This is done by copying the test once for each transport and injecting
1697
the transport_server, transport_readonly_server, and bzrdir_format and
1698
repository_format classes into each copy. Each copy is also given a new id()
1699
to make it easy to identify.
1702
def __init__(self, transport_server, transport_readonly_server, formats):
1703
self._transport_server = transport_server
1704
self._transport_readonly_server = transport_readonly_server
1705
self._formats = formats
1707
def adapt(self, test):
1708
result = TestSuite()
1709
for repository_format, bzrdir_format in self._formats:
1710
new_test = deepcopy(test)
1711
new_test.transport_server = self._transport_server
1712
new_test.transport_readonly_server = self._transport_readonly_server
1713
new_test.bzrdir_format = bzrdir_format
1714
new_test.repository_format = repository_format
1715
def make_new_test_id():
1716
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
1717
return lambda: new_id
1718
new_test.id = make_new_test_id()
1719
result.addTest(new_test)
1723
class InterRepositoryTestProviderAdapter(object):
1724
"""A tool to generate a suite testing multiple inter repository formats.
1726
This is done by copying the test once for each interrepo provider and injecting
1727
the transport_server, transport_readonly_server, repository_format and
1728
repository_to_format classes into each copy.
1729
Each copy is also given a new id() to make it easy to identify.
1732
def __init__(self, transport_server, transport_readonly_server, formats):
1733
self._transport_server = transport_server
1734
self._transport_readonly_server = transport_readonly_server
1735
self._formats = formats
1737
def adapt(self, test):
1738
result = TestSuite()
1739
for interrepo_class, repository_format, repository_format_to in self._formats:
1740
new_test = deepcopy(test)
1741
new_test.transport_server = self._transport_server
1742
new_test.transport_readonly_server = self._transport_readonly_server
1743
new_test.interrepo_class = interrepo_class
1744
new_test.repository_format = repository_format
1745
new_test.repository_format_to = repository_format_to
1746
def make_new_test_id():
1747
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
1748
return lambda: new_id
1749
new_test.id = make_new_test_id()
1750
result.addTest(new_test)
1754
def default_test_list():
1755
"""Generate the default list of interrepo permutations to test."""
1757
# test the default InterRepository between format 6 and the current
1759
# XXX: robertc 20060220 reinstate this when there are two supported
1760
# formats which do not have an optimal code path between them.
1761
result.append((InterRepository,
1762
RepositoryFormat6(),
1763
RepositoryFormatKnit1()))
1764
for optimiser in InterRepository._optimisers:
1765
result.append((optimiser,
1766
optimiser._matching_repo_format,
1767
optimiser._matching_repo_format
1769
# if there are specific combinations we want to use, we can add them
1774
class CopyConverter(object):
1775
"""A repository conversion tool which just performs a copy of the content.
1777
This is slow but quite reliable.
1780
def __init__(self, target_format):
1781
"""Create a CopyConverter.
1783
:param target_format: The format the resulting repository should be.
1785
self.target_format = target_format
1787
def convert(self, repo, pb):
1788
"""Perform the conversion of to_convert, giving feedback via pb.
1790
:param to_convert: The disk object to convert.
1791
:param pb: a progress bar to use for progress information.
1796
# this is only useful with metadir layouts - separated repo content.
1797
# trigger an assertion if not such
1798
repo._format.get_format_string()
1799
self.repo_dir = repo.bzrdir
1800
self.step('Moving repository to repository.backup')
1801
self.repo_dir.transport.move('repository', 'repository.backup')
1802
backup_transport = self.repo_dir.transport.clone('repository.backup')
1803
self.source_repo = repo._format.open(self.repo_dir,
1805
_override_transport=backup_transport)
1806
self.step('Creating new repository')
1807
converted = self.target_format.initialize(self.repo_dir,
1808
self.source_repo.is_shared())
1809
converted.lock_write()
1811
self.step('Copying content into repository.')
1812
self.source_repo.copy_content_into(converted)
1815
self.step('Deleting old repository content.')
1816
self.repo_dir.transport.delete_tree('repository.backup')
1817
self.pb.note('repository converted')
1819
def step(self, message):
1820
"""Update the pb by a step."""
1822
self.pb.update(message, self.count, self.total)
1825
# Copied from xml.sax.saxutils
1826
def _unescape_xml(data):
1827
"""Unescape &, <, and > in a string of data.
1829
data = data.replace("<", "<")
1830
data = data.replace(">", ">")
1831
# must do ampersand last
1832
return data.replace("&", "&")