1
# Copyright (C) 2005, 2006, 2007 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
"""Deprecated weave-based repository formats.
19
Weave based formats scaled linearly with history size and could not represent
23
from StringIO import StringIO
32
revision as _mod_revision,
37
from bzrlib.decorators import needs_read_lock, needs_write_lock
38
from bzrlib.repository import (
40
MetaDirVersionedFileRepository,
41
MetaDirRepositoryFormat,
45
from bzrlib.store.text import TextStore
46
from bzrlib.trace import mutter
49
class AllInOneRepository(Repository):
50
"""Legacy support - the repository behaviour for all-in-one branches."""
52
_serializer = xml5.serializer_v5
54
def __init__(self, _format, a_bzrdir, _revision_store, control_store, text_store):
55
dir_mode = a_bzrdir._get_dir_mode()
56
file_mode = a_bzrdir._get_file_mode()
58
def get_store(name, compressed=True, prefixed=False):
59
# FIXME: This approach of assuming stores are all entirely compressed
60
# or entirely uncompressed is tidy, but breaks upgrade from
61
# some existing branches where there's a mixture; we probably
62
# still want the option to look for both.
63
relpath = a_bzrdir._control_files._escape(name)
64
store = TextStore(a_bzrdir._control_files._transport.clone(relpath),
65
prefixed=prefixed, compressed=compressed,
70
# not broken out yet because the controlweaves|inventory_store
71
# and text_store | weave_store bits are still different.
72
if isinstance(_format, RepositoryFormat4):
73
# cannot remove these - there is still no consistent api
74
# which allows access to this old info.
75
self.inventory_store = get_store('inventory-store')
76
text_store = get_store('text-store')
77
super(AllInOneRepository, self).__init__(_format, a_bzrdir, a_bzrdir._control_files, _revision_store, control_store, text_store)
78
if control_store is not None:
79
control_store.get_scope = self.get_transaction
80
text_store.get_scope = self.get_transaction
83
def _all_possible_ids(self):
84
"""Return all the possible revisions that we could find."""
85
if 'evil' in debug.debug_flags:
86
mutter_callsite(3, "_all_possible_ids scales with size of history.")
87
return self.get_inventory_weave().versions()
90
def _all_revision_ids(self):
91
"""Returns a list of all the revision ids in the repository.
93
These are in as much topological order as the underlying store can
94
present: for weaves ghosts may lead to a lack of correctness until
95
the reweave updates the parents list.
97
if self._revision_store.text_store.listable():
98
return self._revision_store.all_revision_ids(self.get_transaction())
99
result = self._all_possible_ids()
100
# TODO: jam 20070210 Ensure that _all_possible_ids returns non-unicode
101
# ids. (It should, since _revision_store's API should change to
102
# return utf8 revision_ids)
103
return self._eliminate_revisions_not_present(result)
105
def _check_revision_parents(self, revision, inventory):
106
"""Private to Repository and Fetch.
108
This checks the parentage of revision in an inventory weave for
109
consistency and is only applicable to inventory-weave-for-ancestry
110
using repository formats & fetchers.
112
weave_parents = inventory.get_parent_map(
113
[revision.revision_id])[revision.revision_id]
114
parent_map = inventory.get_parent_map(revision.parent_ids)
115
for parent_id in revision.parent_ids:
116
if parent_id in parent_map:
117
# this parent must not be a ghost.
118
if not parent_id in weave_parents:
120
raise errors.CorruptRepository(self)
122
def get_commit_builder(self, branch, parents, config, timestamp=None,
123
timezone=None, committer=None, revprops=None,
125
self._check_ascii_revisionid(revision_id, self.get_commit_builder)
126
result = WeaveCommitBuilder(self, parents, config, timestamp, timezone,
127
committer, revprops, revision_id)
128
self.start_write_group()
132
def get_revisions(self, revision_ids):
133
revs = self._get_revisions(revision_ids)
134
# weave corruption can lead to absent revision markers that should be
136
# the following test is reasonably cheap (it needs a single weave read)
137
# and the weave is cached in read transactions. In write transactions
138
# it is not cached but typically we only read a small number of
139
# revisions. For knits when they are introduced we will probably want
140
# to ensure that caching write transactions are in use.
141
inv = self.get_inventory_weave()
143
self._check_revision_parents(rev, inv)
146
def has_revisions(self, revision_ids):
147
"""See Repository.has_revisions()."""
149
transaction = self.get_transaction()
150
for revision_id in revision_ids:
151
if self._revision_store.has_revision_id(revision_id, transaction):
152
result.add(revision_id)
157
"""AllInOne repositories cannot be shared."""
161
def set_make_working_trees(self, new_value):
162
"""Set the policy flag for making working trees when creating branches.
164
This only applies to branches that use this repository.
166
The default is 'True'.
167
:param new_value: True to restore the default, False to disable making
170
raise errors.RepositoryUpgradeRequired(self.bzrdir.root_transport.base)
172
def make_working_trees(self):
173
"""Returns the policy for making working trees on new branches."""
176
def revision_graph_can_have_wrong_parents(self):
177
# XXX: This is an old format that we don't support full checking on, so
178
# just claim that checking for this inconsistency is not required.
182
class WeaveMetaDirRepository(MetaDirVersionedFileRepository):
183
"""A subclass of MetaDirRepository to set weave specific policy."""
185
_serializer = xml5.serializer_v5
188
def _all_possible_ids(self):
189
"""Return all the possible revisions that we could find."""
190
if 'evil' in debug.debug_flags:
191
mutter_callsite(3, "_all_possible_ids scales with size of history.")
192
return self.get_inventory_weave().versions()
195
def _all_revision_ids(self):
196
"""Returns a list of all the revision ids in the repository.
198
These are in as much topological order as the underlying store can
199
present: for weaves ghosts may lead to a lack of correctness until
200
the reweave updates the parents list.
202
if self._revision_store.text_store.listable():
203
return self._revision_store.all_revision_ids(self.get_transaction())
204
result = self._all_possible_ids()
205
# TODO: jam 20070210 Ensure that _all_possible_ids returns non-unicode
206
# ids. (It should, since _revision_store's API should change to
207
# return utf8 revision_ids)
208
return self._eliminate_revisions_not_present(result)
210
def _check_revision_parents(self, revision, inventory):
211
"""Private to Repository and Fetch.
213
This checks the parentage of revision in an inventory weave for
214
consistency and is only applicable to inventory-weave-for-ancestry
215
using repository formats & fetchers.
217
weave_parents = inventory.get_parent_map(
218
[revision.revision_id])[revision.revision_id]
219
parent_map = inventory.get_parent_map(revision.parent_ids)
220
for parent_id in revision.parent_ids:
221
if parent_id in parent_map:
222
# this parent must not be a ghost.
223
if not parent_id in weave_parents:
225
raise errors.CorruptRepository(self)
227
def get_commit_builder(self, branch, parents, config, timestamp=None,
228
timezone=None, committer=None, revprops=None,
230
self._check_ascii_revisionid(revision_id, self.get_commit_builder)
231
result = WeaveCommitBuilder(self, parents, config, timestamp, timezone,
232
committer, revprops, revision_id)
233
self.start_write_group()
237
def get_revision(self, revision_id):
238
"""Return the Revision object for a named revision"""
239
# TODO: jam 20070210 get_revision_reconcile should do this for us
240
r = self.get_revision_reconcile(revision_id)
241
# weave corruption can lead to absent revision markers that should be
243
# the following test is reasonably cheap (it needs a single weave read)
244
# and the weave is cached in read transactions. In write transactions
245
# it is not cached but typically we only read a small number of
246
# revisions. For knits when they are introduced we will probably want
247
# to ensure that caching write transactions are in use.
248
inv = self.get_inventory_weave()
249
self._check_revision_parents(r, inv)
252
def has_revisions(self, revision_ids):
253
"""See Repository.has_revisions()."""
255
transaction = self.get_transaction()
256
for revision_id in revision_ids:
257
if self._revision_store.has_revision_id(revision_id, transaction):
258
result.add(revision_id)
261
def revision_graph_can_have_wrong_parents(self):
262
# XXX: This is an old format that we don't support full checking on, so
263
# just claim that checking for this inconsistency is not required.
267
class PreSplitOutRepositoryFormat(RepositoryFormat):
268
"""Base class for the pre split out repository formats."""
270
rich_root_data = False
271
supports_tree_reference = False
272
supports_ghosts = False
273
supports_external_lookups = False
275
def initialize(self, a_bzrdir, shared=False, _internal=False):
276
"""Create a weave repository."""
278
raise errors.IncompatibleFormat(self, a_bzrdir._format)
281
# always initialized when the bzrdir is.
282
return self.open(a_bzrdir, _found=True)
284
# Create an empty weave
286
weavefile.write_weave_v5(weave.Weave(), sio)
287
empty_weave = sio.getvalue()
289
mutter('creating repository in %s.', a_bzrdir.transport.base)
290
dirs = ['revision-store', 'weaves']
291
files = [('inventory.weave', StringIO(empty_weave)),
294
# FIXME: RBC 20060125 don't peek under the covers
295
# NB: no need to escape relative paths that are url safe.
296
control_files = lockable_files.LockableFiles(a_bzrdir.transport,
297
'branch-lock', lockable_files.TransportLock)
298
control_files.create_lock()
299
control_files.lock_write()
300
a_bzrdir.transport.mkdir_multi(dirs,
301
mode=a_bzrdir._get_dir_mode())
303
for file, content in files:
304
control_files.put(file, content)
306
control_files.unlock()
307
return self.open(a_bzrdir, _found=True)
309
def _get_control_store(self, repo_transport, control_files):
310
"""Return the control store for this repository."""
311
return self._get_versioned_file_store('',
316
def _get_text_store(self, transport, control_files):
317
"""Get a store for file texts for this format."""
318
raise NotImplementedError(self._get_text_store)
320
def open(self, a_bzrdir, _found=False):
321
"""See RepositoryFormat.open()."""
323
# we are being called directly and must probe.
324
raise NotImplementedError
326
repo_transport = a_bzrdir.get_repository_transport(None)
327
control_files = a_bzrdir._control_files
328
text_store = self._get_text_store(repo_transport, control_files)
329
control_store = self._get_control_store(repo_transport, control_files)
330
_revision_store = self._get_revision_store(repo_transport, control_files)
331
return AllInOneRepository(_format=self,
333
_revision_store=_revision_store,
334
control_store=control_store,
335
text_store=text_store)
337
def check_conversion_target(self, target_format):
341
class RepositoryFormat4(PreSplitOutRepositoryFormat):
342
"""Bzr repository format 4.
344
This repository format has:
346
- TextStores for texts, inventories,revisions.
348
This format is deprecated: it indexes texts using a text id which is
349
removed in format 5; initialization and write support for this format
353
_matchingbzrdir = bzrdir.BzrDirFormat4()
356
super(RepositoryFormat4, self).__init__()
358
def get_format_description(self):
359
"""See RepositoryFormat.get_format_description()."""
360
return "Repository format 4"
362
def initialize(self, url, shared=False, _internal=False):
363
"""Format 4 branches cannot be created."""
364
raise errors.UninitializableFormat(self)
366
def is_supported(self):
367
"""Format 4 is not supported.
369
It is not supported because the model changed from 4 to 5 and the
370
conversion logic is expensive - so doing it on the fly was not
375
def _get_control_store(self, repo_transport, control_files):
376
"""Format 4 repositories have no formal control store at this point.
378
This will cause any control-file-needing apis to fail - this is desired.
382
def _get_revision_store(self, repo_transport, control_files):
383
"""See RepositoryFormat._get_revision_store()."""
384
from bzrlib.xml4 import serializer_v4
385
return self._get_text_rev_store(repo_transport,
388
serializer=serializer_v4)
390
def _get_text_store(self, transport, control_files):
391
"""See RepositoryFormat._get_text_store()."""
394
class RepositoryFormat5(PreSplitOutRepositoryFormat):
395
"""Bzr control format 5.
397
This repository format has:
398
- weaves for file texts and inventory
400
- TextStores for revisions and signatures.
403
_versionedfile_class = weave.WeaveFile
404
_matchingbzrdir = bzrdir.BzrDirFormat5()
407
super(RepositoryFormat5, self).__init__()
409
def get_format_description(self):
410
"""See RepositoryFormat.get_format_description()."""
411
return "Weave repository format 5"
413
def _get_revision_store(self, repo_transport, control_files):
414
"""See RepositoryFormat._get_revision_store()."""
415
"""Return the revision store object for this a_bzrdir."""
416
return self._get_text_rev_store(repo_transport,
421
def _get_text_store(self, transport, control_files):
422
"""See RepositoryFormat._get_text_store()."""
423
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
426
class RepositoryFormat6(PreSplitOutRepositoryFormat):
427
"""Bzr control format 6.
429
This repository format has:
430
- weaves for file texts and inventory
431
- hash subdirectory based stores.
432
- TextStores for revisions and signatures.
435
_versionedfile_class = weave.WeaveFile
436
_matchingbzrdir = bzrdir.BzrDirFormat6()
439
super(RepositoryFormat6, self).__init__()
441
def get_format_description(self):
442
"""See RepositoryFormat.get_format_description()."""
443
return "Weave repository format 6"
445
def _get_revision_store(self, repo_transport, control_files):
446
"""See RepositoryFormat._get_revision_store()."""
447
return self._get_text_rev_store(repo_transport,
453
def _get_text_store(self, transport, control_files):
454
"""See RepositoryFormat._get_text_store()."""
455
return self._get_versioned_file_store('weaves', transport, control_files)
457
class RepositoryFormat7(MetaDirRepositoryFormat):
460
This repository format has:
461
- weaves for file texts and inventory
462
- hash subdirectory based stores.
463
- TextStores for revisions and signatures.
464
- a format marker of its own
465
- an optional 'shared-storage' flag
466
- an optional 'no-working-trees' flag
469
_versionedfile_class = weave.WeaveFile
470
supports_ghosts = False
472
def _get_control_store(self, repo_transport, control_files):
473
"""Return the control store for this repository."""
474
return self._get_versioned_file_store('',
479
def get_format_string(self):
480
"""See RepositoryFormat.get_format_string()."""
481
return "Bazaar-NG Repository format 7"
483
def get_format_description(self):
484
"""See RepositoryFormat.get_format_description()."""
485
return "Weave repository format 7"
487
def check_conversion_target(self, target_format):
490
def _get_revision_store(self, repo_transport, control_files):
491
"""See RepositoryFormat._get_revision_store()."""
492
return self._get_text_rev_store(repo_transport,
499
def _get_text_store(self, transport, control_files):
500
"""See RepositoryFormat._get_text_store()."""
501
return self._get_versioned_file_store('weaves',
505
def initialize(self, a_bzrdir, shared=False):
506
"""Create a weave repository.
508
:param shared: If true the repository will be initialized as a shared
511
# Create an empty weave
513
weavefile.write_weave_v5(weave.Weave(), sio)
514
empty_weave = sio.getvalue()
516
mutter('creating repository in %s.', a_bzrdir.transport.base)
517
dirs = ['revision-store', 'weaves']
518
files = [('inventory.weave', StringIO(empty_weave)),
520
utf8_files = [('format', self.get_format_string())]
522
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
523
return self.open(a_bzrdir=a_bzrdir, _found=True)
525
def open(self, a_bzrdir, _found=False, _override_transport=None):
526
"""See RepositoryFormat.open().
528
:param _override_transport: INTERNAL USE ONLY. Allows opening the
529
repository at a slightly different url
530
than normal. I.e. during 'upgrade'.
533
format = RepositoryFormat.find_format(a_bzrdir)
534
if _override_transport is not None:
535
repo_transport = _override_transport
537
repo_transport = a_bzrdir.get_repository_transport(None)
538
control_files = lockable_files.LockableFiles(repo_transport,
539
'lock', lockdir.LockDir)
540
text_store = self._get_text_store(repo_transport, control_files)
541
control_store = self._get_control_store(repo_transport, control_files)
542
_revision_store = self._get_revision_store(repo_transport, control_files)
543
return WeaveMetaDirRepository(_format=self,
545
control_files=control_files,
546
_revision_store=_revision_store,
547
control_store=control_store,
548
text_store=text_store)
551
class WeaveCommitBuilder(CommitBuilder):
552
"""A builder for weave based repos that don't support ghosts."""
554
def _add_text_to_weave(self, file_id, new_lines, parents, nostore_sha):
555
versionedfile = self.repository.weave_store.get_weave_or_empty(
556
file_id, self.repository.get_transaction())
557
result = versionedfile.add_lines(
558
self._new_revision_id, parents, new_lines,
559
nostore_sha=nostore_sha)[0:2]
563
_legacy_formats = [RepositoryFormat4(),
added
removed
bzrlib/repofmt/weaverepo.py
