1
# Copyright (C) 2005-2011 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 __future__ import absolute_import
19
from .lazy_import import lazy_import
20
lazy_import(globals(), """
29
revision as _mod_revision,
32
from breezy.i18n import gettext
40
from .decorators import only_raises
41
from .inter import InterObject
42
from .lock import _RelockDebugMixin, LogicalLockResult
48
log_exception_quietly, note, mutter, mutter_callsite, warning)
51
# Old formats display a warning, but only once
52
_deprecation_warning_done = False
55
class IsInWriteGroupError(errors.InternalBzrError):
57
_fmt = "May not refresh_data of repo %(repo)s while in a write group."
59
def __init__(self, repo):
60
errors.InternalBzrError.__init__(self, repo=repo)
63
class CannotSetRevisionId(errors.BzrError):
65
_fmt = "Repository format does not support setting revision ids."
68
class FetchResult(object):
69
"""Result of a fetch operation.
71
:ivar revidmap: For lossy fetches, map from source revid to target revid.
72
:ivar total_fetched: Number of revisions fetched
75
def __init__(self, total_fetched=None, revidmap=None):
76
self.total_fetched = total_fetched
77
self.revidmap = revidmap
80
class CommitBuilder(object):
81
"""Provides an interface to build up a commit.
83
This allows describing a tree to be committed without needing to
84
know the internals of the format of the repository.
87
# all clients should supply tree roots.
88
record_root_entry = True
89
# whether this commit builder will automatically update the branch that is
91
updates_branch = False
93
def __init__(self, repository, parents, config_stack, timestamp=None,
94
timezone=None, committer=None, revprops=None,
95
revision_id=None, lossy=False):
96
"""Initiate a CommitBuilder.
98
:param repository: Repository to commit to.
99
:param parents: Revision ids of the parents of the new revision.
100
:param timestamp: Optional timestamp recorded for commit.
101
:param timezone: Optional timezone for timestamp.
102
:param committer: Optional committer to set for commit.
103
:param revprops: Optional dictionary of revision properties.
104
:param revision_id: Optional revision id.
105
:param lossy: Whether to discard data that can not be natively
106
represented, when pushing to a foreign VCS
108
self._config_stack = config_stack
111
if committer is None:
112
self._committer = self._config_stack.get('email')
113
elif not isinstance(committer, text_type):
114
self._committer = committer.decode() # throw if non-ascii
116
self._committer = committer
118
self.parents = parents
119
self.repository = repository
122
if revprops is not None:
123
self._validate_revprops(revprops)
124
self._revprops.update(revprops)
126
if timestamp is None:
127
timestamp = time.time()
128
# Restrict resolution to 1ms
129
self._timestamp = round(timestamp, 3)
132
self._timezone = osutils.local_time_offset()
134
self._timezone = int(timezone)
136
self._generate_revision_if_needed(revision_id)
138
def any_changes(self):
139
"""Return True if any entries were changed.
141
This includes merge-only changes. It is the core for the --unchanged
144
:return: True if any changes have occured.
146
raise NotImplementedError(self.any_changes)
148
def _validate_unicode_text(self, text, context):
149
"""Verify things like commit messages don't have bogus characters."""
150
# TODO(jelmer): Make this repository-format specific
152
raise ValueError('Invalid value for %s: %r' % (context, text))
154
def _validate_revprops(self, revprops):
155
for key, value in viewitems(revprops):
156
# We know that the XML serializers do not round trip '\r'
157
# correctly, so refuse to accept them
158
if not isinstance(value, (text_type, str)):
159
raise ValueError('revision property (%s) is not a valid'
160
' (unicode) string: %r' % (key, value))
161
# TODO(jelmer): Make this repository-format specific
162
self._validate_unicode_text(value,
163
'revision property (%s)' % (key,))
165
def commit(self, message):
166
"""Make the actual commit.
168
:return: The revision id of the recorded revision.
170
raise NotImplementedError(self.commit)
173
"""Abort the commit that is being built.
175
raise NotImplementedError(self.abort)
177
def revision_tree(self):
178
"""Return the tree that was just committed.
180
After calling commit() this can be called to get a
181
RevisionTree representing the newly committed tree. This is
182
preferred to calling Repository.revision_tree() because that may
183
require deserializing the inventory, while we already have a copy in
186
raise NotImplementedError(self.revision_tree)
188
def finish_inventory(self):
189
"""Tell the builder that the inventory is finished.
191
:return: The inventory id in the repository, which can be used with
192
repository.get_inventory.
194
raise NotImplementedError(self.finish_inventory)
196
def _generate_revision_if_needed(self, revision_id):
197
"""Create a revision id if None was supplied.
199
If the repository can not support user-specified revision ids
200
they should override this function and raise CannotSetRevisionId
201
if _new_revision_id is not None.
203
:raises: CannotSetRevisionId
205
if not self.repository._format.supports_setting_revision_ids:
206
if revision_id is not None:
207
raise CannotSetRevisionId()
209
if revision_id is None:
210
self._new_revision_id = self._gen_revision_id()
211
self.random_revid = True
213
self._new_revision_id = revision_id
214
self.random_revid = False
216
def record_iter_changes(self, tree, basis_revision_id, iter_changes):
217
"""Record a new tree via iter_changes.
219
:param tree: The tree to obtain text contents from for changed objects.
220
:param basis_revision_id: The revision id of the tree the iter_changes
221
has been generated against. Currently assumed to be the same
222
as self.parents[0] - if it is not, errors may occur.
223
:param iter_changes: An iter_changes iterator with the changes to apply
224
to basis_revision_id. The iterator must not include any items with
225
a current kind of None - missing items must be either filtered out
226
or errored-on beefore record_iter_changes sees the item.
227
:return: A generator of (relpath, fs_hash) tuples for use with
230
raise NotImplementedError(self.record_iter_changes)
233
class RepositoryWriteLockResult(LogicalLockResult):
234
"""The result of write locking a repository.
236
:ivar repository_token: The token obtained from the underlying lock, or
238
:ivar unlock: A callable which will unlock the lock.
241
def __init__(self, unlock, repository_token):
242
LogicalLockResult.__init__(self, unlock)
243
self.repository_token = repository_token
246
return "RepositoryWriteLockResult(%s, %s)" % (self.repository_token,
250
class WriteGroup(object):
251
"""Context manager that manages a write group.
253
Raising an exception will result in the write group being aborted.
256
def __init__(self, repository, suppress_errors=False):
257
self.repository = repository
258
self._suppress_errors = suppress_errors
261
self.repository.start_write_group()
264
def __exit__(self, exc_type, exc_val, exc_tb):
266
self.repository.abort_write_group(self._suppress_errors)
269
self.repository.commit_write_group()
272
######################################################################
276
class Repository(controldir.ControlComponent, _RelockDebugMixin):
277
"""Repository holding history for one or more branches.
279
The repository holds and retrieves historical information including
280
revisions and file history. It's normally accessed only by the Branch,
281
which views a particular line of development through that history.
283
See VersionedFileRepository in breezy.vf_repository for the
284
base class for most Bazaar repositories.
287
# Does this repository implementation support random access to
288
# items in the tree, or just bulk fetching/pushing of data?
289
supports_random_access = True
291
def abort_write_group(self, suppress_errors=False):
292
"""Commit the contents accrued within the current write group.
294
:param suppress_errors: if true, abort_write_group will catch and log
295
unexpected errors that happen during the abort, rather than
296
allowing them to propagate. Defaults to False.
298
:seealso: start_write_group.
300
if self._write_group is not self.get_transaction():
301
# has an unlock or relock occured ?
304
'(suppressed) mismatched lock context and write group. %r, %r',
305
self._write_group, self.get_transaction())
307
raise errors.BzrError(
308
'mismatched lock context and write group. %r, %r' %
309
(self._write_group, self.get_transaction()))
311
self._abort_write_group()
312
except Exception as exc:
313
self._write_group = None
314
if not suppress_errors:
316
mutter('abort_write_group failed')
317
log_exception_quietly()
318
note(gettext('brz: ERROR (ignored): %s'), exc)
319
self._write_group = None
321
def _abort_write_group(self):
322
"""Template method for per-repository write group cleanup.
324
This is called during abort before the write group is considered to be
325
finished and should cleanup any internal state accrued during the write
326
group. There is no requirement that data handed to the repository be
327
*not* made available - this is not a rollback - but neither should any
328
attempt be made to ensure that data added is fully commited. Abort is
329
invoked when an error has occured so futher disk or network operations
330
may not be possible or may error and if possible should not be
334
def add_fallback_repository(self, repository):
335
"""Add a repository to use for looking up data not held locally.
337
:param repository: A repository.
339
raise NotImplementedError(self.add_fallback_repository)
341
def _check_fallback_repository(self, repository):
342
"""Check that this repository can fallback to repository safely.
344
Raise an error if not.
346
:param repository: A repository to fallback to.
348
return InterRepository._assert_same_model(self, repository)
350
def all_revision_ids(self):
351
"""Returns a list of all the revision ids in the repository.
353
This is conceptually deprecated because code should generally work on
354
the graph reachable from a particular revision, and ignore any other
355
revisions that might be present. There is no direct replacement
358
if 'evil' in debug.debug_flags:
359
mutter_callsite(2, "all_revision_ids is linear with history.")
360
return self._all_revision_ids()
362
def _all_revision_ids(self):
363
"""Returns a list of all the revision ids in the repository.
365
These are in as much topological order as the underlying store can
368
raise NotImplementedError(self._all_revision_ids)
370
def break_lock(self):
371
"""Break a lock if one is present from another instance.
373
Uses the ui factory to ask for confirmation if the lock may be from
376
self.control_files.break_lock()
379
def create(controldir):
380
"""Construct the current default format repository in controldir."""
381
return RepositoryFormat.get_default_format().initialize(controldir)
383
def __init__(self, _format, controldir, control_files):
384
"""instantiate a Repository.
386
:param _format: The format of the repository on disk.
387
:param controldir: The ControlDir of the repository.
388
:param control_files: Control files to use for locking, etc.
390
# In the future we will have a single api for all stores for
391
# getting file texts, inventories and revisions, then
392
# this construct will accept instances of those things.
393
super(Repository, self).__init__()
394
self._format = _format
395
# the following are part of the public API for Repository:
396
self.controldir = controldir
397
self.control_files = control_files
399
self._write_group = None
400
# Additional places to query for data.
401
self._fallback_repositories = []
404
def user_transport(self):
405
return self.controldir.user_transport
408
def control_transport(self):
409
return self._transport
412
if self._fallback_repositories:
413
return '%s(%r, fallback_repositories=%r)' % (
414
self.__class__.__name__,
416
self._fallback_repositories)
418
return '%s(%r)' % (self.__class__.__name__,
421
def _has_same_fallbacks(self, other_repo):
422
"""Returns true if the repositories have the same fallbacks."""
423
my_fb = self._fallback_repositories
424
other_fb = other_repo._fallback_repositories
425
if len(my_fb) != len(other_fb):
427
for f, g in zip(my_fb, other_fb):
428
if not f.has_same_location(g):
432
def has_same_location(self, other):
433
"""Returns a boolean indicating if this repository is at the same
434
location as another repository.
436
This might return False even when two repository objects are accessing
437
the same physical repository via different URLs.
439
if self.__class__ is not other.__class__:
441
return (self.control_url == other.control_url)
443
def is_in_write_group(self):
444
"""Return True if there is an open write group.
446
:seealso: start_write_group.
448
return self._write_group is not None
451
return self.control_files.is_locked()
453
def is_write_locked(self):
454
"""Return True if this object is write locked."""
455
return self.is_locked() and self.control_files._lock_mode == 'w'
457
def lock_write(self, token=None):
458
"""Lock this repository for writing.
460
This causes caching within the repository obejct to start accumlating
461
data during reads, and allows a 'write_group' to be obtained. Write
462
groups must be used for actual data insertion.
464
A token should be passed in if you know that you have locked the object
465
some other way, and need to synchronise this object's state with that
468
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
470
:param token: if this is already locked, then lock_write will fail
471
unless the token matches the existing lock.
472
:returns: a token if this instance supports tokens, otherwise None.
473
:raises TokenLockingNotSupported: when a token is given but this
474
instance doesn't support using token locks.
475
:raises MismatchedToken: if the specified token doesn't match the token
476
of the existing lock.
477
:seealso: start_write_group.
478
:return: A RepositoryWriteLockResult.
480
locked = self.is_locked()
481
token = self.control_files.lock_write(token=token)
483
self._warn_if_deprecated()
485
for repo in self._fallback_repositories:
486
# Writes don't affect fallback repos
489
return RepositoryWriteLockResult(self.unlock, token)
492
"""Lock the repository for read operations.
494
:return: An object with an unlock method which will release the lock
497
locked = self.is_locked()
498
self.control_files.lock_read()
500
self._warn_if_deprecated()
502
for repo in self._fallback_repositories:
505
return LogicalLockResult(self.unlock)
507
def get_physical_lock_status(self):
508
return self.control_files.get_physical_lock_status()
510
def leave_lock_in_place(self):
511
"""Tell this repository not to release the physical lock when this
514
If lock_write doesn't return a token, then this method is not supported.
516
self.control_files.leave_in_place()
518
def dont_leave_lock_in_place(self):
519
"""Tell this repository to release the physical lock when this
520
object is unlocked, even if it didn't originally acquire it.
522
If lock_write doesn't return a token, then this method is not supported.
524
self.control_files.dont_leave_in_place()
526
def gather_stats(self, revid=None, committers=None):
527
"""Gather statistics from a revision id.
529
:param revid: The revision id to gather statistics from, if None, then
530
no revision specific statistics are gathered.
531
:param committers: Optional parameter controlling whether to grab
532
a count of committers from the revision specific statistics.
533
:return: A dictionary of statistics. Currently this contains:
534
committers: The number of committers if requested.
535
firstrev: A tuple with timestamp, timezone for the penultimate left
536
most ancestor of revid, if revid is not the NULL_REVISION.
537
latestrev: A tuple with timestamp, timezone for revid, if revid is
538
not the NULL_REVISION.
539
revisions: The total revision count in the repository.
540
size: An estimate disk size of the repository in bytes.
542
with self.lock_read():
544
if revid and committers:
545
result['committers'] = 0
546
if revid and revid != _mod_revision.NULL_REVISION:
547
graph = self.get_graph()
549
all_committers = set()
550
revisions = [r for (r, p) in graph.iter_ancestry([revid])
551
if r != _mod_revision.NULL_REVISION]
554
# ignore the revisions in the middle - just grab first and last
555
revisions = revisions[0], revisions[-1]
556
for revision in self.get_revisions(revisions):
557
if not last_revision:
558
last_revision = revision
560
all_committers.add(revision.committer)
561
first_revision = revision
563
result['committers'] = len(all_committers)
564
result['firstrev'] = (first_revision.timestamp,
565
first_revision.timezone)
566
result['latestrev'] = (last_revision.timestamp,
567
last_revision.timezone)
570
def find_branches(self, using=False):
571
"""Find branches underneath this repository.
573
This will include branches inside other branches.
575
:param using: If True, list only branches using this repository.
577
if using and not self.is_shared():
578
for branch in self.controldir.list_branches():
582
class Evaluator(object):
585
self.first_call = True
587
def __call__(self, controldir):
588
# On the first call, the parameter is always the controldir
589
# containing the current repo.
590
if not self.first_call:
592
repository = controldir.open_repository()
593
except errors.NoRepositoryPresent:
596
return False, ([], repository)
597
self.first_call = False
598
value = (controldir.list_branches(), None)
601
for branches, repository in controldir.ControlDir.find_controldirs(
602
self.user_transport, evaluate=Evaluator()):
603
if branches is not None:
604
for branch in branches:
606
if not using and repository is not None:
607
for branch in repository.find_branches():
610
def search_missing_revision_ids(self, other,
611
find_ghosts=True, revision_ids=None, if_present_ids=None,
613
"""Return the revision ids that other has that this does not.
615
These are returned in topological order.
617
revision_ids: only return revision ids included by revision_id.
619
with self.lock_read():
620
return InterRepository.get(other, self).search_missing_revision_ids(
621
find_ghosts=find_ghosts, revision_ids=revision_ids,
622
if_present_ids=if_present_ids, limit=limit)
626
"""Open the repository rooted at base.
628
For instance, if the repository is at URL/.bzr/repository,
629
Repository.open(URL) -> a Repository instance.
631
control = controldir.ControlDir.open(base)
632
return control.open_repository()
634
def copy_content_into(self, destination, revision_id=None):
635
"""Make a complete copy of the content in self into destination.
637
This is a destructive operation! Do not use it on existing
640
return InterRepository.get(self, destination).copy_content(revision_id)
642
def commit_write_group(self):
643
"""Commit the contents accrued within the current write group.
645
:seealso: start_write_group.
647
:return: it may return an opaque hint that can be passed to 'pack'.
649
if self._write_group is not self.get_transaction():
650
# has an unlock or relock occured ?
651
raise errors.BzrError('mismatched lock context %r and '
653
(self.get_transaction(), self._write_group))
654
result = self._commit_write_group()
655
self._write_group = None
658
def _commit_write_group(self):
659
"""Template method for per-repository write group cleanup.
661
This is called before the write group is considered to be
662
finished and should ensure that all data handed to the repository
663
for writing during the write group is safely committed (to the
664
extent possible considering file system caching etc).
667
def suspend_write_group(self):
668
"""Suspend a write group.
670
:raise UnsuspendableWriteGroup: If the write group can not be
672
:return: List of tokens
674
raise errors.UnsuspendableWriteGroup(self)
676
def refresh_data(self):
677
"""Re-read any data needed to synchronise with disk.
679
This method is intended to be called after another repository instance
680
(such as one used by a smart server) has inserted data into the
681
repository. On all repositories this will work outside of write groups.
682
Some repository formats (pack and newer for breezy native formats)
683
support refresh_data inside write groups. If called inside a write
684
group on a repository that does not support refreshing in a write group
685
IsInWriteGroupError will be raised.
689
def resume_write_group(self, tokens):
690
if not self.is_write_locked():
691
raise errors.NotWriteLocked(self)
692
if self._write_group:
693
raise errors.BzrError('already in a write group')
694
self._resume_write_group(tokens)
695
# so we can detect unlock/relock - the write group is now entered.
696
self._write_group = self.get_transaction()
698
def _resume_write_group(self, tokens):
699
raise errors.UnsuspendableWriteGroup(self)
701
def fetch(self, source, revision_id=None, find_ghosts=False, lossy=False):
702
"""Fetch the content required to construct revision_id from source.
704
If revision_id is None, then all content is copied.
706
fetch() may not be used when the repository is in a write group -
707
either finish the current write group before using fetch, or use
708
fetch before starting the write group.
710
:param find_ghosts: Find and copy revisions in the source that are
711
ghosts in the target (and not reachable directly by walking out to
712
the first-present revision in target from revision_id).
713
:param revision_id: If specified, all the content needed for this
714
revision ID will be copied to the target. Fetch will determine for
715
itself which content needs to be copied.
716
:return: A FetchResult object
718
if self.is_in_write_group():
719
raise errors.InternalBzrError(
720
"May not fetch while in a write group.")
721
# fast path same-url fetch operations
722
# TODO: lift out to somewhere common with RemoteRepository
723
# <https://bugs.launchpad.net/bzr/+bug/401646>
724
if (self.has_same_location(source)
725
and self._has_same_fallbacks(source)):
726
# check that last_revision is in 'from' and then return a
728
if (revision_id is not None and
729
not _mod_revision.is_null(revision_id)):
730
self.get_revision(revision_id)
732
inter = InterRepository.get(source, self)
734
revision_id=revision_id, find_ghosts=find_ghosts, lossy=lossy)
736
def get_commit_builder(self, branch, parents, config_stack, timestamp=None,
737
timezone=None, committer=None, revprops=None,
738
revision_id=None, lossy=False):
739
"""Obtain a CommitBuilder for this repository.
741
:param branch: Branch to commit to.
742
:param parents: Revision ids of the parents of the new revision.
743
:param config_stack: Configuration stack to use.
744
:param timestamp: Optional timestamp recorded for commit.
745
:param timezone: Optional timezone for timestamp.
746
:param committer: Optional committer to set for commit.
747
:param revprops: Optional dictionary of revision properties.
748
:param revision_id: Optional revision id.
749
:param lossy: Whether to discard data that can not be natively
750
represented, when pushing to a foreign VCS
752
raise NotImplementedError(self.get_commit_builder)
754
@only_raises(errors.LockNotHeld, errors.LockBroken)
756
if (self.control_files._lock_count == 1 and
757
self.control_files._lock_mode == 'w'):
758
if self._write_group is not None:
759
self.abort_write_group()
760
self.control_files.unlock()
761
raise errors.BzrError(
762
'Must end write groups before releasing write locks.')
763
self.control_files.unlock()
764
if self.control_files._lock_count == 0:
765
for repo in self._fallback_repositories:
768
def clone(self, controldir, revision_id=None):
769
"""Clone this repository into controldir using the current format.
771
Currently no check is made that the format of this repository and
772
the bzrdir format are compatible. FIXME RBC 20060201.
774
:return: The newly created destination repository.
776
with self.lock_read():
777
# TODO: deprecate after 0.16; cloning this with all its settings is
778
# probably not very useful -- mbp 20070423
779
dest_repo = self._create_sprouting_repo(
780
controldir, shared=self.is_shared())
781
self.copy_content_into(dest_repo, revision_id)
784
def start_write_group(self):
785
"""Start a write group in the repository.
787
Write groups are used by repositories which do not have a 1:1 mapping
788
between file ids and backend store to manage the insertion of data from
789
both fetch and commit operations.
791
A write lock is required around the
792
start_write_group/commit_write_group for the support of lock-requiring
795
One can only insert data into a repository inside a write group.
799
if not self.is_write_locked():
800
raise errors.NotWriteLocked(self)
801
if self._write_group:
802
raise errors.BzrError('already in a write group')
803
self._start_write_group()
804
# so we can detect unlock/relock - the write group is now entered.
805
self._write_group = self.get_transaction()
807
def _start_write_group(self):
808
"""Template method for per-repository write group startup.
810
This is called before the write group is considered to be
814
def sprout(self, to_bzrdir, revision_id=None):
815
"""Create a descendent repository for new development.
817
Unlike clone, this does not copy the settings of the repository.
819
with self.lock_read():
820
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
821
dest_repo.fetch(self, revision_id=revision_id)
824
def _create_sprouting_repo(self, a_controldir, shared):
826
a_controldir._format, self.controldir._format.__class__):
827
# use target default format.
828
dest_repo = a_controldir.create_repository()
830
# Most control formats need the repository to be specifically
831
# created, but on some old all-in-one formats it's not needed
833
dest_repo = self._format.initialize(
834
a_controldir, shared=shared)
835
except errors.UninitializableFormat:
836
dest_repo = a_controldir.open_repository()
839
def has_revision(self, revision_id):
840
"""True if this repository has a copy of the revision."""
841
with self.lock_read():
842
return revision_id in self.has_revisions((revision_id,))
844
def has_revisions(self, revision_ids):
845
"""Probe to find out the presence of multiple revisions.
847
:param revision_ids: An iterable of revision_ids.
848
:return: A set of the revision_ids that were present.
850
raise NotImplementedError(self.has_revisions)
852
def get_revision(self, revision_id):
853
"""Return the Revision object for a named revision."""
854
with self.lock_read():
855
return self.get_revisions([revision_id])[0]
857
def get_revision_reconcile(self, revision_id):
858
"""'reconcile' helper routine that allows access to a revision always.
860
This variant of get_revision does not cross check the weave graph
861
against the revision one as get_revision does: but it should only
862
be used by reconcile, or reconcile-alike commands that are correcting
863
or testing the revision graph.
865
raise NotImplementedError(self.get_revision_reconcile)
867
def get_revisions(self, revision_ids):
868
"""Get many revisions at once.
870
Repositories that need to check data on every revision read should
871
subclass this method.
874
for revid, rev in self.iter_revisions(revision_ids):
876
raise errors.NoSuchRevision(self, revid)
878
return [revs[revid] for revid in revision_ids]
880
def iter_revisions(self, revision_ids):
881
"""Iterate over revision objects.
883
:param revision_ids: An iterable of revisions to examine. None may be
884
passed to request all revisions known to the repository. Note that
885
not all repositories can find unreferenced revisions; for those
886
repositories only referenced ones will be returned.
887
:return: An iterator of (revid, revision) tuples. Absent revisions (
888
those asked for but not available) are returned as (revid, None).
889
N.B.: Revisions are not necessarily yielded in order.
891
raise NotImplementedError(self.iter_revisions)
893
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
894
"""Produce a generator of revision deltas.
896
Note that the input is a sequence of REVISIONS, not revision_ids.
897
Trees will be held in memory until the generator exits.
898
Each delta is relative to the revision's lefthand predecessor.
900
:param specific_fileids: if not None, the result is filtered
901
so that only those file-ids, their parents and their
902
children are included.
904
raise NotImplementedError(self.get_deltas_for_revisions)
906
def get_revision_delta(self, revision_id):
907
"""Return the delta for one revision.
909
The delta is relative to the left-hand predecessor of the
912
with self.lock_read():
913
r = self.get_revision(revision_id)
914
return list(self.get_deltas_for_revisions([r]))[0]
916
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
917
raise NotImplementedError(self.store_revision_signature)
919
def add_signature_text(self, revision_id, signature):
920
"""Store a signature text for a revision.
922
:param revision_id: Revision id of the revision
923
:param signature: Signature text.
925
raise NotImplementedError(self.add_signature_text)
927
def iter_files_bytes(self, desired_files):
928
"""Iterate through file versions.
930
Files will not necessarily be returned in the order they occur in
931
desired_files. No specific order is guaranteed.
933
Yields pairs of identifier, bytes_iterator. identifier is an opaque
934
value supplied by the caller as part of desired_files. It should
935
uniquely identify the file version in the caller's context. (Examples:
936
an index number or a TreeTransform trans_id.)
938
:param desired_files: a list of (file_id, revision_id, identifier)
941
raise NotImplementedError(self.iter_files_bytes)
943
def get_rev_id_for_revno(self, revno, known_pair):
944
"""Return the revision id of a revno, given a later (revno, revid)
945
pair in the same history.
947
:return: if found (True, revid). If the available history ran out
948
before reaching the revno, then this returns
949
(False, (closest_revno, closest_revid)).
951
known_revno, known_revid = known_pair
952
partial_history = [known_revid]
953
distance_from_known = known_revno - revno
954
if distance_from_known < 0:
955
raise errors.RevnoOutOfBounds(revno, (0, known_revno))
958
self, partial_history, stop_index=distance_from_known)
959
except errors.RevisionNotPresent as err:
960
if err.revision_id == known_revid:
961
# The start revision (known_revid) wasn't found.
962
raise errors.NoSuchRevision(self, known_revid)
963
# This is a stacked repository with no fallbacks, or a there's a
964
# left-hand ghost. Either way, even though the revision named in
965
# the error isn't in this repo, we know it's the next step in this
967
partial_history.append(err.revision_id)
968
if len(partial_history) <= distance_from_known:
969
# Didn't find enough history to get a revid for the revno.
970
earliest_revno = known_revno - len(partial_history) + 1
971
return (False, (earliest_revno, partial_history[-1]))
972
if len(partial_history) - 1 > distance_from_known:
973
raise AssertionError('_iter_for_revno returned too much history')
974
return (True, partial_history[-1])
977
"""Return True if this repository is flagged as a shared repository."""
978
raise NotImplementedError(self.is_shared)
980
def reconcile(self, other=None, thorough=False):
981
"""Reconcile this repository."""
982
raise NotImplementedError(self.reconcile)
984
def _refresh_data(self):
985
"""Helper called from lock_* to ensure coherency with disk.
987
The default implementation does nothing; it is however possible
988
for repositories to maintain loaded indices across multiple locks
989
by checking inside their implementation of this method to see
990
whether their indices are still valid. This depends of course on
991
the disk format being validatable in this manner. This method is
992
also called by the refresh_data() public interface to cause a refresh
993
to occur while in a write lock so that data inserted by a smart server
994
push operation is visible on the client's instance of the physical
998
def revision_tree(self, revision_id):
999
"""Return Tree for a revision on this branch.
1001
`revision_id` may be NULL_REVISION for the empty tree revision.
1003
raise NotImplementedError(self.revision_tree)
1005
def revision_trees(self, revision_ids):
1006
"""Return Trees for revisions in this repository.
1008
:param revision_ids: a sequence of revision-ids;
1009
a revision-id may not be None or b'null:'
1011
raise NotImplementedError(self.revision_trees)
1013
def pack(self, hint=None, clean_obsolete_packs=False):
1014
"""Compress the data within the repository.
1016
This operation only makes sense for some repository types. For other
1017
types it should be a no-op that just returns.
1019
This stub method does not require a lock, but subclasses should use
1020
self.write_lock as this is a long running call it's reasonable to
1021
implicitly lock for the user.
1023
:param hint: If not supplied, the whole repository is packed.
1024
If supplied, the repository may use the hint parameter as a
1025
hint for the parts of the repository to pack. A hint can be
1026
obtained from the result of commit_write_group(). Out of
1027
date hints are simply ignored, because concurrent operations
1028
can obsolete them rapidly.
1030
:param clean_obsolete_packs: Clean obsolete packs immediately after
1034
def get_transaction(self):
1035
return self.control_files.get_transaction()
1037
def get_parent_map(self, revision_ids):
1038
"""See graph.StackedParentsProvider.get_parent_map"""
1039
raise NotImplementedError(self.get_parent_map)
1041
def _get_parent_map_no_fallbacks(self, revision_ids):
1042
"""Same as Repository.get_parent_map except doesn't query fallbacks."""
1043
# revisions index works in keys; this just works in revisions
1044
# therefore wrap and unwrap
1047
for revision_id in revision_ids:
1048
if revision_id == _mod_revision.NULL_REVISION:
1049
result[revision_id] = ()
1050
elif revision_id is None:
1051
raise ValueError('get_parent_map(None) is not valid')
1053
query_keys.append((revision_id,))
1054
vf = self.revisions.without_fallbacks()
1055
for (revision_id,), parent_keys in viewitems(
1056
vf.get_parent_map(query_keys)):
1058
result[revision_id] = tuple([parent_revid
1059
for (parent_revid,) in parent_keys])
1061
result[revision_id] = (_mod_revision.NULL_REVISION,)
1064
def _make_parents_provider(self):
1065
if not self._format.supports_external_lookups:
1067
return graph.StackedParentsProvider(_LazyListJoin(
1068
[self._make_parents_provider_unstacked()],
1069
self._fallback_repositories))
1071
def _make_parents_provider_unstacked(self):
1072
return graph.CallableToParentsProviderAdapter(
1073
self._get_parent_map_no_fallbacks)
1075
def get_known_graph_ancestry(self, revision_ids):
1076
"""Return the known graph for a set of revision ids and their ancestors.
1078
raise NotImplementedError(self.get_known_graph_ancestry)
1080
def get_file_graph(self):
1081
"""Return the graph walker for files."""
1082
raise NotImplementedError(self.get_file_graph)
1084
def get_graph(self, other_repository=None):
1085
"""Return the graph walker for this repository format"""
1086
parents_provider = self._make_parents_provider()
1087
if (other_repository is not None and
1088
not self.has_same_location(other_repository)):
1089
parents_provider = graph.StackedParentsProvider(
1090
[parents_provider, other_repository._make_parents_provider()])
1091
return graph.Graph(parents_provider)
1093
def set_make_working_trees(self, new_value):
1094
"""Set the policy flag for making working trees when creating branches.
1096
This only applies to branches that use this repository.
1098
The default is 'True'.
1099
:param new_value: True to restore the default, False to disable making
1102
raise NotImplementedError(self.set_make_working_trees)
1104
def make_working_trees(self):
1105
"""Returns the policy for making working trees on new branches."""
1106
raise NotImplementedError(self.make_working_trees)
1108
def sign_revision(self, revision_id, gpg_strategy):
1109
raise NotImplementedError(self.sign_revision)
1111
def verify_revision_signature(self, revision_id, gpg_strategy):
1112
"""Verify the signature on a revision.
1114
:param revision_id: the revision to verify
1115
:gpg_strategy: the GPGStrategy object to used
1117
:return: gpg.SIGNATURE_VALID or a failed SIGNATURE_ value
1119
raise NotImplementedError(self.verify_revision_signature)
1121
def verify_revision_signatures(self, revision_ids, gpg_strategy):
1122
"""Verify revision signatures for a number of revisions.
1124
:param revision_id: the revision to verify
1125
:gpg_strategy: the GPGStrategy object to used
1126
:return: Iterator over tuples with revision id, result and keys
1128
with self.lock_read():
1129
for revid in revision_ids:
1130
(result, key) = self.verify_revision_signature(revid, gpg_strategy)
1131
yield revid, result, key
1133
def has_signature_for_revision_id(self, revision_id):
1134
"""Query for a revision signature for revision_id in the repository."""
1135
raise NotImplementedError(self.has_signature_for_revision_id)
1137
def get_signature_text(self, revision_id):
1138
"""Return the text for a signature."""
1139
raise NotImplementedError(self.get_signature_text)
1141
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
1142
"""Check consistency of all history of given revision_ids.
1144
Different repository implementations should override _check().
1146
:param revision_ids: A non-empty list of revision_ids whose ancestry
1147
will be checked. Typically the last revision_id of a branch.
1148
:param callback_refs: A dict of check-refs to resolve and callback
1149
the check/_check method on the items listed as wanting the ref.
1151
:param check_repo: If False do not check the repository contents, just
1152
calculate the data callback_refs requires and call them back.
1154
return self._check(revision_ids=revision_ids, callback_refs=callback_refs,
1155
check_repo=check_repo)
1157
def _check(self, revision_ids=None, callback_refs=None, check_repo=True):
1158
raise NotImplementedError(self.check)
1160
def _warn_if_deprecated(self, branch=None):
1161
if not self._format.is_deprecated():
1163
global _deprecation_warning_done
1164
if _deprecation_warning_done:
1168
conf = config.GlobalStack()
1170
conf = branch.get_config_stack()
1171
if 'format_deprecation' in conf.get('suppress_warnings'):
1173
warning("Format %s for %s is deprecated -"
1174
" please use 'brz upgrade' to get better performance"
1175
% (self._format, self.controldir.transport.base))
1177
_deprecation_warning_done = True
1179
def supports_rich_root(self):
1180
return self._format.rich_root_data
1182
def _check_ascii_revisionid(self, revision_id, method):
1183
"""Private helper for ascii-only repositories."""
1184
# weave repositories refuse to store revisionids that are non-ascii.
1185
if revision_id is not None:
1186
# weaves require ascii revision ids.
1187
if isinstance(revision_id, text_type):
1189
revision_id.encode('ascii')
1190
except UnicodeEncodeError:
1191
raise errors.NonAsciiRevisionId(method, self)
1194
revision_id.decode('ascii')
1195
except UnicodeDecodeError:
1196
raise errors.NonAsciiRevisionId(method, self)
1199
class RepositoryFormatRegistry(controldir.ControlComponentFormatRegistry):
1200
"""Repository format registry."""
1202
def get_default(self):
1203
"""Return the current default format."""
1204
return controldir.format_registry.make_controldir('default').repository_format
1207
network_format_registry = registry.FormatRegistry()
1208
"""Registry of formats indexed by their network name.
1210
The network name for a repository format is an identifier that can be used when
1211
referring to formats with smart server operations. See
1212
RepositoryFormat.network_name() for more detail.
1216
format_registry = RepositoryFormatRegistry(network_format_registry)
1217
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
1219
This can contain either format instances themselves, or classes/factories that
1220
can be called to obtain one.
1224
#####################################################################
1225
# Repository Formats
1227
class RepositoryFormat(controldir.ControlComponentFormat):
1228
"""A repository format.
1230
Formats provide four things:
1231
* An initialization routine to construct repository data on disk.
1232
* a optional format string which is used when the BzrDir supports
1234
* an open routine which returns a Repository instance.
1235
* A network name for referring to the format in smart server RPC
1238
There is one and only one Format subclass for each on-disk format. But
1239
there can be one Repository subclass that is used for several different
1240
formats. The _format attribute on a Repository instance can be used to
1241
determine the disk format.
1243
Formats are placed in a registry by their format string for reference
1244
during opening. These should be subclasses of RepositoryFormat for
1247
Once a format is deprecated, just deprecate the initialize and open
1248
methods on the format class. Do not deprecate the object, as the
1249
object may be created even when a repository instance hasn't been
1252
Common instance attributes:
1253
_matchingcontroldir - the controldir format that the repository format was
1254
originally written to work with. This can be used if manually
1255
constructing a bzrdir and repository, or more commonly for test suite
1259
# Set to True or False in derived classes. True indicates that the format
1260
# supports ghosts gracefully.
1261
supports_ghosts = None
1262
# Can this repository be given external locations to lookup additional
1263
# data. Set to True or False in derived classes.
1264
supports_external_lookups = None
1265
# Does this format support CHK bytestring lookups. Set to True or False in
1267
supports_chks = None
1268
# Should fetch trigger a reconcile after the fetch? Only needed for
1269
# some repository formats that can suffer internal inconsistencies.
1270
_fetch_reconcile = False
1271
# Does this format have < O(tree_size) delta generation. Used to hint what
1272
# code path for commit, amongst other things.
1274
# Does doing a pack operation compress data? Useful for the pack UI command
1275
# (so if there is one pack, the operation can still proceed because it may
1276
# help), and for fetching when data won't have come from the same
1278
pack_compresses = False
1279
# Does the repository storage understand references to trees?
1280
supports_tree_reference = None
1281
# Is the format experimental ?
1282
experimental = False
1283
# Does this repository format escape funky characters, or does it create
1284
# files with similar names as the versioned files in its contents on disk
1286
supports_funky_characters = None
1287
# Does this repository format support leaving locks?
1288
supports_leaving_lock = None
1289
# Does this format support the full VersionedFiles interface?
1290
supports_full_versioned_files = None
1291
# Does this format support signing revision signatures?
1292
supports_revision_signatures = True
1293
# Can the revision graph have incorrect parents?
1294
revision_graph_can_have_wrong_parents = None
1295
# Does this format support setting revision ids?
1296
supports_setting_revision_ids = True
1297
# Does this format support rich root data?
1298
rich_root_data = None
1299
# Does this format support explicitly versioned directories?
1300
supports_versioned_directories = None
1301
# Can other repositories be nested into one of this format?
1302
supports_nesting_repositories = None
1303
# Is it possible for revisions to be present without being referenced
1305
supports_unreferenced_revisions = None
1306
# Does this format store the current Branch.nick in a revision when
1308
supports_storing_branch_nick = True
1309
# Does the format support overriding the transport to use
1310
supports_overriding_transport = True
1311
# Does the format support setting custom revision properties?
1312
supports_custom_revision_properties = True
1313
# Does the format record per-file revision metadata?
1314
records_per_file_revision = True
1317
return "%s()" % self.__class__.__name__
1319
def __eq__(self, other):
1320
# format objects are generally stateless
1321
return isinstance(other, self.__class__)
1323
def __ne__(self, other):
1324
return not self == other
1326
def get_format_description(self):
1327
"""Return the short description for this format."""
1328
raise NotImplementedError(self.get_format_description)
1330
def initialize(self, controldir, shared=False):
1331
"""Initialize a repository of this format in controldir.
1333
:param controldir: The controldir to put the new repository in it.
1334
:param shared: The repository should be initialized as a sharable one.
1335
:returns: The new repository object.
1337
This may raise UninitializableFormat if shared repository are not
1338
compatible the controldir.
1340
raise NotImplementedError(self.initialize)
1342
def is_supported(self):
1343
"""Is this format supported?
1345
Supported formats must be initializable and openable.
1346
Unsupported formats may not support initialization or committing or
1347
some other features depending on the reason for not being supported.
1351
def is_deprecated(self):
1352
"""Is this format deprecated?
1354
Deprecated formats may trigger a user-visible warning recommending
1355
the user to upgrade. They are still fully supported.
1359
def network_name(self):
1360
"""A simple byte string uniquely identifying this format for RPC calls.
1362
MetaDir repository formats use their disk format string to identify the
1363
repository over the wire. All in one formats such as bzr < 0.8, and
1364
foreign formats like svn/git and hg should use some marker which is
1365
unique and immutable.
1367
raise NotImplementedError(self.network_name)
1369
def check_conversion_target(self, target_format):
1370
if self.rich_root_data and not target_format.rich_root_data:
1371
raise errors.BadConversionTarget(
1372
'Does not support rich root data.', target_format,
1374
if (self.supports_tree_reference
1375
and not getattr(target_format, 'supports_tree_reference', False)):
1376
raise errors.BadConversionTarget(
1377
'Does not support nested trees', target_format,
1380
def open(self, controldir, _found=False):
1381
"""Return an instance of this format for a controldir.
1383
_found is a private parameter, do not use it.
1385
raise NotImplementedError(self.open)
1387
def _run_post_repo_init_hooks(self, repository, controldir, shared):
1388
from .controldir import ControlDir, RepoInitHookParams
1389
hooks = ControlDir.hooks['post_repo_init']
1392
params = RepoInitHookParams(repository, self, controldir, shared)
1397
# formats which have no format string are not discoverable or independently
1398
# creatable on disk, so are not registered in format_registry. They're
1399
# all in breezy.bzr.knitreponow. When an instance of one of these is
1400
# needed, it's constructed directly by the ControlDir. Non-native formats where
1401
# the repository is not separately opened are similar.
1403
format_registry.register_lazy(
1404
b'Bazaar-NG Knit Repository Format 1',
1405
'breezy.bzr.knitrepo',
1406
'RepositoryFormatKnit1',
1409
format_registry.register_lazy(
1410
b'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
1411
'breezy.bzr.knitrepo',
1412
'RepositoryFormatKnit3',
1415
format_registry.register_lazy(
1416
b'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
1417
'breezy.bzr.knitrepo',
1418
'RepositoryFormatKnit4',
1421
# Pack-based formats. There is one format for pre-subtrees, and one for
1422
# post-subtrees to allow ease of testing.
1423
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
1424
format_registry.register_lazy(
1425
b'Bazaar pack repository format 1 (needs bzr 0.92)\n',
1426
'breezy.bzr.knitpack_repo',
1427
'RepositoryFormatKnitPack1',
1429
format_registry.register_lazy(
1430
b'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
1431
'breezy.bzr.knitpack_repo',
1432
'RepositoryFormatKnitPack3',
1434
format_registry.register_lazy(
1435
b'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
1436
'breezy.bzr.knitpack_repo',
1437
'RepositoryFormatKnitPack4',
1439
format_registry.register_lazy(
1440
b'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
1441
'breezy.bzr.knitpack_repo',
1442
'RepositoryFormatKnitPack5',
1444
format_registry.register_lazy(
1445
b'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
1446
'breezy.bzr.knitpack_repo',
1447
'RepositoryFormatKnitPack5RichRoot',
1449
format_registry.register_lazy(
1450
b'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
1451
'breezy.bzr.knitpack_repo',
1452
'RepositoryFormatKnitPack5RichRootBroken',
1454
format_registry.register_lazy(
1455
b'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
1456
'breezy.bzr.knitpack_repo',
1457
'RepositoryFormatKnitPack6',
1459
format_registry.register_lazy(
1460
b'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
1461
'breezy.bzr.knitpack_repo',
1462
'RepositoryFormatKnitPack6RichRoot',
1464
format_registry.register_lazy(
1465
b'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
1466
'breezy.bzr.groupcompress_repo',
1467
'RepositoryFormat2a',
1470
# Development formats.
1471
# Check their docstrings to see if/when they are obsolete.
1472
format_registry.register_lazy(
1473
(b"Bazaar development format 2 with subtree support "
1474
b"(needs bzr.dev from before 1.8)\n"),
1475
'breezy.bzr.knitpack_repo',
1476
'RepositoryFormatPackDevelopment2Subtree',
1478
format_registry.register_lazy(
1479
b'Bazaar development format 8\n',
1480
'breezy.bzr.groupcompress_repo',
1481
'RepositoryFormat2aSubtree',
1485
class InterRepository(InterObject):
1486
"""This class represents operations taking place between two repositories.
1488
Its instances have methods like copy_content and fetch, and contain
1489
references to the source and target repositories these operations can be
1492
Often we will provide convenience methods on 'repository' which carry out
1493
operations with another repository - they will always forward to
1494
InterRepository.get(other).method_name(parameters).
1498
"""The available optimised InterRepository types."""
1500
def copy_content(self, revision_id=None):
1501
"""Make a complete copy of the content in self into destination.
1503
This is a destructive operation! Do not use it on existing
1506
:param revision_id: Only copy the content needed to construct
1507
revision_id and its parents.
1509
with self.lock_write():
1511
self.target.set_make_working_trees(
1512
self.source.make_working_trees())
1513
except NotImplementedError:
1515
self.target.fetch(self.source, revision_id=revision_id)
1517
def fetch(self, revision_id=None, find_ghosts=False, lossy=False):
1518
"""Fetch the content required to construct revision_id.
1520
The content is copied from self.source to self.target.
1522
:param revision_id: if None all content is copied, if NULL_REVISION no
1524
:return: FetchResult
1526
raise NotImplementedError(self.fetch)
1528
def search_missing_revision_ids(
1529
self, find_ghosts=True, revision_ids=None, if_present_ids=None,
1531
"""Return the revision ids that source has that target does not.
1533
:param revision_ids: return revision ids included by these
1534
revision_ids. NoSuchRevision will be raised if any of these
1535
revisions are not present.
1536
:param if_present_ids: like revision_ids, but will not cause
1537
NoSuchRevision if any of these are absent, instead they will simply
1538
not be in the result. This is useful for e.g. finding revisions
1539
to fetch for tags, which may reference absent revisions.
1540
:param find_ghosts: If True find missing revisions in deep history
1541
rather than just finding the surface difference.
1542
:param limit: Maximum number of revisions to return, topologically
1544
:return: A breezy.graph.SearchResult.
1546
raise NotImplementedError(self.search_missing_revision_ids)
1549
def _same_model(source, target):
1550
"""True if source and target have the same data representation.
1552
Note: this is always called on the base class; overriding it in a
1553
subclass will have no effect.
1556
InterRepository._assert_same_model(source, target)
1558
except errors.IncompatibleRepositories as e:
1562
def _assert_same_model(source, target):
1563
"""Raise an exception if two repositories do not use the same model.
1565
if source.supports_rich_root() != target.supports_rich_root():
1566
raise errors.IncompatibleRepositories(source, target,
1567
"different rich-root support")
1568
if source._serializer != target._serializer:
1569
raise errors.IncompatibleRepositories(source, target,
1570
"different serializers")
1573
class CopyConverter(object):
1574
"""A repository conversion tool which just performs a copy of the content.
1576
This is slow but quite reliable.
1579
def __init__(self, target_format):
1580
"""Create a CopyConverter.
1582
:param target_format: The format the resulting repository should be.
1584
self.target_format = target_format
1586
def convert(self, repo, pb):
1587
"""Perform the conversion of to_convert, giving feedback via pb.
1589
:param to_convert: The disk object to convert.
1590
:param pb: a progress bar to use for progress information.
1592
with ui.ui_factory.nested_progress_bar() as pb:
1595
# this is only useful with metadir layouts - separated repo content.
1596
# trigger an assertion if not such
1597
repo._format.get_format_string()
1598
self.repo_dir = repo.controldir
1599
pb.update(gettext('Moving repository to repository.backup'))
1600
self.repo_dir.transport.move('repository', 'repository.backup')
1601
backup_transport = self.repo_dir.transport.clone(
1602
'repository.backup')
1603
repo._format.check_conversion_target(self.target_format)
1604
self.source_repo = repo._format.open(self.repo_dir,
1606
_override_transport=backup_transport)
1607
pb.update(gettext('Creating new repository'))
1608
converted = self.target_format.initialize(self.repo_dir,
1609
self.source_repo.is_shared())
1610
with converted.lock_write():
1611
pb.update(gettext('Copying content'))
1612
self.source_repo.copy_content_into(converted)
1613
pb.update(gettext('Deleting old repository content'))
1614
self.repo_dir.transport.delete_tree('repository.backup')
1615
ui.ui_factory.note(gettext('repository converted'))
1618
def _strip_NULL_ghosts(revision_graph):
1619
"""Also don't use this. more compatibility code for unmigrated clients."""
1620
# Filter ghosts, and null:
1621
if _mod_revision.NULL_REVISION in revision_graph:
1622
del revision_graph[_mod_revision.NULL_REVISION]
1623
for key, parents in viewitems(revision_graph):
1624
revision_graph[key] = tuple(parent for parent in parents if parent
1626
return revision_graph
1629
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
1630
stop_revision=None):
1631
"""Extend the partial history to include a given index
1633
If a stop_index is supplied, stop when that index has been reached.
1634
If a stop_revision is supplied, stop when that revision is
1635
encountered. Otherwise, stop when the beginning of history is
1638
:param stop_index: The index which should be present. When it is
1639
present, history extension will stop.
1640
:param stop_revision: The revision id which should be present. When
1641
it is encountered, history extension will stop.
1643
start_revision = partial_history_cache[-1]
1644
graph = repo.get_graph()
1645
iterator = graph.iter_lefthand_ancestry(start_revision,
1646
(_mod_revision.NULL_REVISION,))
1648
# skip the last revision in the list
1651
if (stop_index is not None and
1652
len(partial_history_cache) > stop_index):
1654
if partial_history_cache[-1] == stop_revision:
1656
revision_id = next(iterator)
1657
partial_history_cache.append(revision_id)
1658
except StopIteration:
1663
class _LazyListJoin(object):
1664
"""An iterable yielding the contents of many lists as one list.
1666
Each iterator made from this will reflect the current contents of the lists
1667
at the time the iterator is made.
1669
This is used by Repository's _make_parents_provider implementation so that
1672
pp = repo._make_parents_provider() # uses a list of fallback repos
1673
pp.add_fallback_repository(other_repo) # appends to that list
1674
result = pp.get_parent_map(...)
1675
# The result will include revs from other_repo
1678
def __init__(self, *list_parts):
1679
self.list_parts = list_parts
1683
for list_part in self.list_parts:
1684
full_list.extend(list_part)
1685
return iter(full_list)
1688
return "%s.%s(%s)" % (self.__module__, self.__class__.__name__,
added
removed
breezy/repository.py
