1
# Copyright (C) 2007-2010 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
from bzrlib.lazy_import import lazy_import
18
lazy_import(globals(), """
26
revision as _mod_revision,
38
from bzrlib.decorators import needs_read_lock, needs_write_lock
39
from bzrlib.repository import (
42
MetaDirRepositoryFormat,
48
class _KnitParentsProvider(object):
50
def __init__(self, knit):
54
return 'KnitParentsProvider(%r)' % self._knit
56
def get_parent_map(self, keys):
57
"""See graph.StackedParentsProvider.get_parent_map"""
59
for revision_id in keys:
60
if revision_id is None:
61
raise ValueError('get_parent_map(None) is not valid')
62
if revision_id == _mod_revision.NULL_REVISION:
63
parent_map[revision_id] = ()
67
self._knit.get_parents_with_ghosts(revision_id))
68
except errors.RevisionNotPresent:
72
parents = (_mod_revision.NULL_REVISION,)
73
parent_map[revision_id] = parents
77
class _KnitsParentsProvider(object):
79
def __init__(self, knit, prefix=()):
80
"""Create a parent provider for string keys mapped to tuple keys."""
85
return 'KnitsParentsProvider(%r)' % self._knit
87
def get_parent_map(self, keys):
88
"""See graph.StackedParentsProvider.get_parent_map"""
89
parent_map = self._knit.get_parent_map(
90
[self._prefix + (key,) for key in keys])
92
for key, parents in parent_map.items():
95
parents = (_mod_revision.NULL_REVISION,)
97
parents = tuple(parent[-1] for parent in parents)
98
result[revid] = parents
99
for revision_id in keys:
100
if revision_id == _mod_revision.NULL_REVISION:
101
result[revision_id] = ()
105
class KnitRepository(MetaDirRepository):
106
"""Knit format repository."""
108
# These attributes are inherited from the Repository base class. Setting
109
# them to None ensures that if the constructor is changed to not initialize
110
# them, or a subclass fails to call the constructor, that an error will
111
# occur rather than the system working but generating incorrect data.
112
_commit_builder_class = None
115
def __init__(self, _format, a_bzrdir, control_files, _commit_builder_class,
117
MetaDirRepository.__init__(self, _format, a_bzrdir, control_files)
118
self._commit_builder_class = _commit_builder_class
119
self._serializer = _serializer
120
self._reconcile_fixes_text_parents = True
123
def _all_revision_ids(self):
124
"""See Repository.all_revision_ids()."""
125
return [key[0] for key in self.revisions.keys()]
127
def _activate_new_inventory(self):
128
"""Put a replacement inventory.new into use as inventories."""
129
# Copy the content across
131
t.copy('inventory.new.kndx', 'inventory.kndx')
133
t.copy('inventory.new.knit', 'inventory.knit')
134
except errors.NoSuchFile:
135
# empty inventories knit
136
t.delete('inventory.knit')
137
# delete the temp inventory
138
t.delete('inventory.new.kndx')
140
t.delete('inventory.new.knit')
141
except errors.NoSuchFile:
142
# empty inventories knit
144
# Force index reload (sanity check)
145
self.inventories._index._reset_cache()
146
self.inventories.keys()
148
def _backup_inventory(self):
150
t.copy('inventory.kndx', 'inventory.backup.kndx')
151
t.copy('inventory.knit', 'inventory.backup.knit')
153
def _move_file_id(self, from_id, to_id):
154
t = self._transport.clone('knits')
155
from_rel_url = self.texts._index._mapper.map((from_id, None))
156
to_rel_url = self.texts._index._mapper.map((to_id, None))
157
# We expect both files to always exist in this case.
158
for suffix in ('.knit', '.kndx'):
159
t.rename(from_rel_url + suffix, to_rel_url + suffix)
161
def _remove_file_id(self, file_id):
162
t = self._transport.clone('knits')
163
rel_url = self.texts._index._mapper.map((file_id, None))
164
for suffix in ('.kndx', '.knit'):
166
t.delete(rel_url + suffix)
167
except errors.NoSuchFile:
170
def _temp_inventories(self):
171
result = self._format._get_inventories(self._transport, self,
173
# Reconciling when the output has no revisions would result in no
174
# writes - but we want to ensure there is an inventory for
175
# compatibility with older clients that don't lazy-load.
176
result.get_parent_map([('A',)])
179
def fileid_involved_between_revs(self, from_revid, to_revid):
180
"""Find file_id(s) which are involved in the changes between revisions.
182
This determines the set of revisions which are involved, and then
183
finds all file ids affected by those revisions.
185
vf = self._get_revision_vf()
186
from_set = set(vf.get_ancestry(from_revid))
187
to_set = set(vf.get_ancestry(to_revid))
188
changed = to_set.difference(from_set)
189
return self._fileid_involved_by_set(changed)
191
def fileid_involved(self, last_revid=None):
192
"""Find all file_ids modified in the ancestry of last_revid.
194
:param last_revid: If None, last_revision() will be used.
197
changed = set(self.all_revision_ids())
199
changed = set(self.get_ancestry(last_revid))
202
return self._fileid_involved_by_set(changed)
205
def get_revision(self, revision_id):
206
"""Return the Revision object for a named revision"""
207
revision_id = osutils.safe_revision_id(revision_id)
208
return self.get_revision_reconcile(revision_id)
210
def _refresh_data(self):
211
if not self.is_locked():
213
# Create a new transaction to force all knits to see the scope change.
214
# This is safe because we're outside a write group.
215
self.control_files._finish_transaction()
216
if self.is_write_locked():
217
self.control_files._set_write_transaction()
219
self.control_files._set_read_transaction()
222
def reconcile(self, other=None, thorough=False):
223
"""Reconcile this repository."""
224
from bzrlib.reconcile import KnitReconciler
225
reconciler = KnitReconciler(self, thorough=thorough)
226
reconciler.reconcile()
229
def _make_parents_provider(self):
230
return _KnitsParentsProvider(self.revisions)
232
def _find_inconsistent_revision_parents(self, revisions_iterator=None):
233
"""Find revisions with different parent lists in the revision object
234
and in the index graph.
236
:param revisions_iterator: None, or an iterator of (revid,
237
Revision-or-None). This iterator controls the revisions checked.
238
:returns: an iterator yielding tuples of (revison-id, parents-in-index,
239
parents-in-revision).
241
if not self.is_locked():
242
raise AssertionError()
244
if revisions_iterator is None:
245
revisions_iterator = self._iter_revisions(None)
246
for revid, revision in revisions_iterator:
249
parent_map = vf.get_parent_map([(revid,)])
250
parents_according_to_index = tuple(parent[-1] for parent in
251
parent_map[(revid,)])
252
parents_according_to_revision = tuple(revision.parent_ids)
253
if parents_according_to_index != parents_according_to_revision:
254
yield (revid, parents_according_to_index,
255
parents_according_to_revision)
257
def _check_for_inconsistent_revision_parents(self):
258
inconsistencies = list(self._find_inconsistent_revision_parents())
260
raise errors.BzrCheckError(
261
"Revision knit has inconsistent parents.")
263
def revision_graph_can_have_wrong_parents(self):
264
# The revision.kndx could potentially claim a revision has a different
265
# parent to the revision text.
269
class RepositoryFormatKnit(MetaDirRepositoryFormat):
270
"""Bzr repository knit format (generalized).
272
This repository format has:
273
- knits for file texts and inventory
274
- hash subdirectory based stores.
275
- knits for revisions and signatures
276
- TextStores for revisions and signatures.
277
- a format marker of its own
278
- an optional 'shared-storage' flag
279
- an optional 'no-working-trees' flag
283
# Set this attribute in derived classes to control the repository class
284
# created by open and initialize.
285
repository_class = None
286
# Set this attribute in derived classes to control the
287
# _commit_builder_class that the repository objects will have passed to
289
_commit_builder_class = None
290
# Set this attribute in derived clases to control the _serializer that the
291
# repository objects will have passed to their constructor.
293
def _serializer(self):
294
return xml5.serializer_v5
295
# Knit based repositories handle ghosts reasonably well.
296
supports_ghosts = True
297
# External lookups are not supported in this format.
298
supports_external_lookups = False
300
supports_chks = False
301
_fetch_order = 'topological'
302
_fetch_uses_deltas = True
305
def _get_inventories(self, repo_transport, repo, name='inventory'):
306
mapper = versionedfile.ConstantMapper(name)
307
index = _mod_knit._KndxIndex(repo_transport, mapper,
308
repo.get_transaction, repo.is_write_locked, repo.is_locked)
309
access = _mod_knit._KnitKeyAccess(repo_transport, mapper)
310
return _mod_knit.KnitVersionedFiles(index, access, annotated=False)
312
def _get_revisions(self, repo_transport, repo):
313
mapper = versionedfile.ConstantMapper('revisions')
314
index = _mod_knit._KndxIndex(repo_transport, mapper,
315
repo.get_transaction, repo.is_write_locked, repo.is_locked)
316
access = _mod_knit._KnitKeyAccess(repo_transport, mapper)
317
return _mod_knit.KnitVersionedFiles(index, access, max_delta_chain=0,
320
def _get_signatures(self, repo_transport, repo):
321
mapper = versionedfile.ConstantMapper('signatures')
322
index = _mod_knit._KndxIndex(repo_transport, mapper,
323
repo.get_transaction, repo.is_write_locked, repo.is_locked)
324
access = _mod_knit._KnitKeyAccess(repo_transport, mapper)
325
return _mod_knit.KnitVersionedFiles(index, access, max_delta_chain=0,
328
def _get_texts(self, repo_transport, repo):
329
mapper = versionedfile.HashEscapedPrefixMapper()
330
base_transport = repo_transport.clone('knits')
331
index = _mod_knit._KndxIndex(base_transport, mapper,
332
repo.get_transaction, repo.is_write_locked, repo.is_locked)
333
access = _mod_knit._KnitKeyAccess(base_transport, mapper)
334
return _mod_knit.KnitVersionedFiles(index, access, max_delta_chain=200,
337
def initialize(self, a_bzrdir, shared=False):
338
"""Create a knit format 1 repository.
340
:param a_bzrdir: bzrdir to contain the new repository; must already
342
:param shared: If true the repository will be initialized as a shared
345
trace.mutter('creating repository in %s.', a_bzrdir.transport.base)
348
utf8_files = [('format', self.get_format_string())]
350
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
351
repo_transport = a_bzrdir.get_repository_transport(None)
352
control_files = lockable_files.LockableFiles(repo_transport,
353
'lock', lockdir.LockDir)
354
transaction = transactions.WriteTransaction()
355
result = self.open(a_bzrdir=a_bzrdir, _found=True)
357
# the revision id here is irrelevant: it will not be stored, and cannot
358
# already exist, we do this to create files on disk for older clients.
359
result.inventories.get_parent_map([('A',)])
360
result.revisions.get_parent_map([('A',)])
361
result.signatures.get_parent_map([('A',)])
363
self._run_post_repo_init_hooks(result, a_bzrdir, shared)
366
def open(self, a_bzrdir, _found=False, _override_transport=None):
367
"""See RepositoryFormat.open().
369
:param _override_transport: INTERNAL USE ONLY. Allows opening the
370
repository at a slightly different url
371
than normal. I.e. during 'upgrade'.
374
format = RepositoryFormat.find_format(a_bzrdir)
375
if _override_transport is not None:
376
repo_transport = _override_transport
378
repo_transport = a_bzrdir.get_repository_transport(None)
379
control_files = lockable_files.LockableFiles(repo_transport,
380
'lock', lockdir.LockDir)
381
repo = self.repository_class(_format=self,
383
control_files=control_files,
384
_commit_builder_class=self._commit_builder_class,
385
_serializer=self._serializer)
386
repo.revisions = self._get_revisions(repo_transport, repo)
387
repo.signatures = self._get_signatures(repo_transport, repo)
388
repo.inventories = self._get_inventories(repo_transport, repo)
389
repo.texts = self._get_texts(repo_transport, repo)
390
repo.chk_bytes = None
391
repo._transport = repo_transport
395
class RepositoryFormatKnit1(RepositoryFormatKnit):
396
"""Bzr repository knit format 1.
398
This repository format has:
399
- knits for file texts and inventory
400
- hash subdirectory based stores.
401
- knits for revisions and signatures
402
- TextStores for revisions and signatures.
403
- a format marker of its own
404
- an optional 'shared-storage' flag
405
- an optional 'no-working-trees' flag
408
This format was introduced in bzr 0.8.
411
repository_class = KnitRepository
412
_commit_builder_class = CommitBuilder
414
def _serializer(self):
415
return xml5.serializer_v5
417
def __ne__(self, other):
418
return self.__class__ is not other.__class__
420
def get_format_string(self):
421
"""See RepositoryFormat.get_format_string()."""
422
return "Bazaar-NG Knit Repository Format 1"
424
def get_format_description(self):
425
"""See RepositoryFormat.get_format_description()."""
426
return "Knit repository format 1"
429
class RepositoryFormatKnit3(RepositoryFormatKnit):
430
"""Bzr repository knit format 3.
432
This repository format has:
433
- knits for file texts and inventory
434
- hash subdirectory based stores.
435
- knits for revisions and signatures
436
- TextStores for revisions and signatures.
437
- a format marker of its own
438
- an optional 'shared-storage' flag
439
- an optional 'no-working-trees' flag
441
- support for recording full info about the tree root
442
- support for recording tree-references
445
repository_class = KnitRepository
446
_commit_builder_class = RootCommitBuilder
447
rich_root_data = True
449
supports_tree_reference = True
451
def _serializer(self):
452
return xml7.serializer_v7
454
def _get_matching_bzrdir(self):
455
return bzrdir.format_registry.make_bzrdir('dirstate-with-subtree')
457
def _ignore_setting_bzrdir(self, format):
460
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
462
def get_format_string(self):
463
"""See RepositoryFormat.get_format_string()."""
464
return "Bazaar Knit Repository Format 3 (bzr 0.15)\n"
466
def get_format_description(self):
467
"""See RepositoryFormat.get_format_description()."""
468
return "Knit repository format 3"
471
class RepositoryFormatKnit4(RepositoryFormatKnit):
472
"""Bzr repository knit format 4.
474
This repository format has everything in format 3, except for
476
- knits for file texts and inventory
477
- hash subdirectory based stores.
478
- knits for revisions and signatures
479
- TextStores for revisions and signatures.
480
- a format marker of its own
481
- an optional 'shared-storage' flag
482
- an optional 'no-working-trees' flag
484
- support for recording full info about the tree root
487
repository_class = KnitRepository
488
_commit_builder_class = RootCommitBuilder
489
rich_root_data = True
490
supports_tree_reference = False
492
def _serializer(self):
493
return xml6.serializer_v6
495
def _get_matching_bzrdir(self):
496
return bzrdir.format_registry.make_bzrdir('rich-root')
498
def _ignore_setting_bzrdir(self, format):
501
_matchingbzrdir = property(_get_matching_bzrdir, _ignore_setting_bzrdir)
503
def get_format_string(self):
504
"""See RepositoryFormat.get_format_string()."""
505
return 'Bazaar Knit Repository Format 4 (bzr 1.0)\n'
507
def get_format_description(self):
508
"""See RepositoryFormat.get_format_description()."""
509
return "Knit repository format 4"
added
removed
bzrlib/repofmt/knitrepo.py
