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.bundle import serializer
33
from breezy.i18n import gettext
41
from .decorators import only_raises
42
from .inter import InterObject
43
from .lock import _RelockDebugMixin, LogicalLockResult
49
log_exception_quietly, note, mutter, mutter_callsite, warning)
52
# Old formats display a warning, but only once
53
_deprecation_warning_done = False
56
class IsInWriteGroupError(errors.InternalBzrError):
58
_fmt = "May not refresh_data of repo %(repo)s while in a write group."
60
def __init__(self, repo):
61
errors.InternalBzrError.__init__(self, repo=repo)
64
class CannotSetRevisionId(errors.BzrError):
66
_fmt = "Repository format does not support setting revision ids."
69
class CommitBuilder(object):
70
"""Provides an interface to build up a commit.
72
This allows describing a tree to be committed without needing to
73
know the internals of the format of the repository.
76
# all clients should supply tree roots.
77
record_root_entry = True
78
# whether this commit builder will automatically update the branch that is
80
updates_branch = False
82
def __init__(self, repository, parents, config_stack, timestamp=None,
83
timezone=None, committer=None, revprops=None,
84
revision_id=None, lossy=False):
85
"""Initiate a CommitBuilder.
87
:param repository: Repository to commit to.
88
:param parents: Revision ids of the parents of the new revision.
89
:param timestamp: Optional timestamp recorded for commit.
90
:param timezone: Optional timezone for timestamp.
91
:param committer: Optional committer to set for commit.
92
:param revprops: Optional dictionary of revision properties.
93
:param revision_id: Optional revision id.
94
:param lossy: Whether to discard data that can not be natively
95
represented, when pushing to a foreign VCS
97
self._config_stack = config_stack
100
if committer is None:
101
self._committer = self._config_stack.get('email')
102
elif not isinstance(committer, text_type):
103
self._committer = committer.decode() # throw if non-ascii
105
self._committer = committer
107
self.parents = parents
108
self.repository = repository
111
if revprops is not None:
112
self._validate_revprops(revprops)
113
self._revprops.update(revprops)
115
if timestamp is None:
116
timestamp = time.time()
117
# Restrict resolution to 1ms
118
self._timestamp = round(timestamp, 3)
121
self._timezone = osutils.local_time_offset()
123
self._timezone = int(timezone)
125
self._generate_revision_if_needed(revision_id)
127
def any_changes(self):
128
"""Return True if any entries were changed.
130
This includes merge-only changes. It is the core for the --unchanged
133
:return: True if any changes have occured.
135
raise NotImplementedError(self.any_changes)
137
def _validate_unicode_text(self, text, context):
138
"""Verify things like commit messages don't have bogus characters."""
139
# TODO(jelmer): Make this repository-format specific
141
raise ValueError('Invalid value for %s: %r' % (context, text))
143
def _validate_revprops(self, revprops):
144
for key, value in viewitems(revprops):
145
# We know that the XML serializers do not round trip '\r'
146
# correctly, so refuse to accept them
147
if not isinstance(value, (text_type, str)):
148
raise ValueError('revision property (%s) is not a valid'
149
' (unicode) string: %r' % (key, value))
150
# TODO(jelmer): Make this repository-format specific
151
self._validate_unicode_text(value,
152
'revision property (%s)' % (key,))
154
def commit(self, message):
155
"""Make the actual commit.
157
:return: The revision id of the recorded revision.
159
raise NotImplementedError(self.commit)
162
"""Abort the commit that is being built.
164
raise NotImplementedError(self.abort)
166
def revision_tree(self):
167
"""Return the tree that was just committed.
169
After calling commit() this can be called to get a
170
RevisionTree representing the newly committed tree. This is
171
preferred to calling Repository.revision_tree() because that may
172
require deserializing the inventory, while we already have a copy in
175
raise NotImplementedError(self.revision_tree)
177
def finish_inventory(self):
178
"""Tell the builder that the inventory is finished.
180
:return: The inventory id in the repository, which can be used with
181
repository.get_inventory.
183
raise NotImplementedError(self.finish_inventory)
185
def _generate_revision_if_needed(self, revision_id):
186
"""Create a revision id if None was supplied.
188
If the repository can not support user-specified revision ids
189
they should override this function and raise CannotSetRevisionId
190
if _new_revision_id is not None.
192
:raises: CannotSetRevisionId
194
if not self.repository._format.supports_setting_revision_ids:
195
if revision_id is not None:
196
raise CannotSetRevisionId()
198
if revision_id is None:
199
self._new_revision_id = self._gen_revision_id()
200
self.random_revid = True
202
self._new_revision_id = revision_id
203
self.random_revid = False
205
def record_iter_changes(self, tree, basis_revision_id, iter_changes):
206
"""Record a new tree via iter_changes.
208
:param tree: The tree to obtain text contents from for changed objects.
209
:param basis_revision_id: The revision id of the tree the iter_changes
210
has been generated against. Currently assumed to be the same
211
as self.parents[0] - if it is not, errors may occur.
212
:param iter_changes: An iter_changes iterator with the changes to apply
213
to basis_revision_id. The iterator must not include any items with
214
a current kind of None - missing items must be either filtered out
215
or errored-on beefore record_iter_changes sees the item.
216
:return: A generator of (relpath, fs_hash) tuples for use with
219
raise NotImplementedError(self.record_iter_changes)
222
class RepositoryWriteLockResult(LogicalLockResult):
223
"""The result of write locking a repository.
225
:ivar repository_token: The token obtained from the underlying lock, or
227
:ivar unlock: A callable which will unlock the lock.
230
def __init__(self, unlock, repository_token):
231
LogicalLockResult.__init__(self, unlock)
232
self.repository_token = repository_token
235
return "RepositoryWriteLockResult(%s, %s)" % (self.repository_token,
239
######################################################################
243
class Repository(controldir.ControlComponent, _RelockDebugMixin):
244
"""Repository holding history for one or more branches.
246
The repository holds and retrieves historical information including
247
revisions and file history. It's normally accessed only by the Branch,
248
which views a particular line of development through that history.
250
See VersionedFileRepository in breezy.vf_repository for the
251
base class for most Bazaar repositories.
254
# Does this repository implementation support random access to
255
# items in the tree, or just bulk fetching/pushing of data?
256
supports_random_access = True
258
def abort_write_group(self, suppress_errors=False):
259
"""Commit the contents accrued within the current write group.
261
:param suppress_errors: if true, abort_write_group will catch and log
262
unexpected errors that happen during the abort, rather than
263
allowing them to propagate. Defaults to False.
265
:seealso: start_write_group.
267
if self._write_group is not self.get_transaction():
268
# has an unlock or relock occured ?
271
'(suppressed) mismatched lock context and write group. %r, %r',
272
self._write_group, self.get_transaction())
274
raise errors.BzrError(
275
'mismatched lock context and write group. %r, %r' %
276
(self._write_group, self.get_transaction()))
278
self._abort_write_group()
279
except Exception as exc:
280
self._write_group = None
281
if not suppress_errors:
283
mutter('abort_write_group failed')
284
log_exception_quietly()
285
note(gettext('brz: ERROR (ignored): %s'), exc)
286
self._write_group = None
288
def _abort_write_group(self):
289
"""Template method for per-repository write group cleanup.
291
This is called during abort before the write group is considered to be
292
finished and should cleanup any internal state accrued during the write
293
group. There is no requirement that data handed to the repository be
294
*not* made available - this is not a rollback - but neither should any
295
attempt be made to ensure that data added is fully commited. Abort is
296
invoked when an error has occured so futher disk or network operations
297
may not be possible or may error and if possible should not be
301
def add_fallback_repository(self, repository):
302
"""Add a repository to use for looking up data not held locally.
304
:param repository: A repository.
306
raise NotImplementedError(self.add_fallback_repository)
308
def _check_fallback_repository(self, repository):
309
"""Check that this repository can fallback to repository safely.
311
Raise an error if not.
313
:param repository: A repository to fallback to.
315
return InterRepository._assert_same_model(self, repository)
317
def all_revision_ids(self):
318
"""Returns a list of all the revision ids in the repository.
320
This is conceptually deprecated because code should generally work on
321
the graph reachable from a particular revision, and ignore any other
322
revisions that might be present. There is no direct replacement
325
if 'evil' in debug.debug_flags:
326
mutter_callsite(2, "all_revision_ids is linear with history.")
327
return self._all_revision_ids()
329
def _all_revision_ids(self):
330
"""Returns a list of all the revision ids in the repository.
332
These are in as much topological order as the underlying store can
335
raise NotImplementedError(self._all_revision_ids)
337
def break_lock(self):
338
"""Break a lock if one is present from another instance.
340
Uses the ui factory to ask for confirmation if the lock may be from
343
self.control_files.break_lock()
346
def create(controldir):
347
"""Construct the current default format repository in controldir."""
348
return RepositoryFormat.get_default_format().initialize(controldir)
350
def __init__(self, _format, controldir, control_files):
351
"""instantiate a Repository.
353
:param _format: The format of the repository on disk.
354
:param controldir: The ControlDir of the repository.
355
:param control_files: Control files to use for locking, etc.
357
# In the future we will have a single api for all stores for
358
# getting file texts, inventories and revisions, then
359
# this construct will accept instances of those things.
360
super(Repository, self).__init__()
361
self._format = _format
362
# the following are part of the public API for Repository:
363
self.controldir = controldir
364
self.control_files = control_files
366
self._write_group = None
367
# Additional places to query for data.
368
self._fallback_repositories = []
371
def user_transport(self):
372
return self.controldir.user_transport
375
def control_transport(self):
376
return self._transport
379
if self._fallback_repositories:
380
return '%s(%r, fallback_repositories=%r)' % (
381
self.__class__.__name__,
383
self._fallback_repositories)
385
return '%s(%r)' % (self.__class__.__name__,
388
def _has_same_fallbacks(self, other_repo):
389
"""Returns true if the repositories have the same fallbacks."""
390
my_fb = self._fallback_repositories
391
other_fb = other_repo._fallback_repositories
392
if len(my_fb) != len(other_fb):
394
for f, g in zip(my_fb, other_fb):
395
if not f.has_same_location(g):
399
def has_same_location(self, other):
400
"""Returns a boolean indicating if this repository is at the same
401
location as another repository.
403
This might return False even when two repository objects are accessing
404
the same physical repository via different URLs.
406
if self.__class__ is not other.__class__:
408
return (self.control_url == other.control_url)
410
def is_in_write_group(self):
411
"""Return True if there is an open write group.
413
:seealso: start_write_group.
415
return self._write_group is not None
418
return self.control_files.is_locked()
420
def is_write_locked(self):
421
"""Return True if this object is write locked."""
422
return self.is_locked() and self.control_files._lock_mode == 'w'
424
def lock_write(self, token=None):
425
"""Lock this repository for writing.
427
This causes caching within the repository obejct to start accumlating
428
data during reads, and allows a 'write_group' to be obtained. Write
429
groups must be used for actual data insertion.
431
A token should be passed in if you know that you have locked the object
432
some other way, and need to synchronise this object's state with that
435
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
437
:param token: if this is already locked, then lock_write will fail
438
unless the token matches the existing lock.
439
:returns: a token if this instance supports tokens, otherwise None.
440
:raises TokenLockingNotSupported: when a token is given but this
441
instance doesn't support using token locks.
442
:raises MismatchedToken: if the specified token doesn't match the token
443
of the existing lock.
444
:seealso: start_write_group.
445
:return: A RepositoryWriteLockResult.
447
locked = self.is_locked()
448
token = self.control_files.lock_write(token=token)
450
self._warn_if_deprecated()
452
for repo in self._fallback_repositories:
453
# Writes don't affect fallback repos
456
return RepositoryWriteLockResult(self.unlock, token)
459
"""Lock the repository for read operations.
461
:return: An object with an unlock method which will release the lock
464
locked = self.is_locked()
465
self.control_files.lock_read()
467
self._warn_if_deprecated()
469
for repo in self._fallback_repositories:
472
return LogicalLockResult(self.unlock)
474
def get_physical_lock_status(self):
475
return self.control_files.get_physical_lock_status()
477
def leave_lock_in_place(self):
478
"""Tell this repository not to release the physical lock when this
481
If lock_write doesn't return a token, then this method is not supported.
483
self.control_files.leave_in_place()
485
def dont_leave_lock_in_place(self):
486
"""Tell this repository to release the physical lock when this
487
object is unlocked, even if it didn't originally acquire it.
489
If lock_write doesn't return a token, then this method is not supported.
491
self.control_files.dont_leave_in_place()
493
def gather_stats(self, revid=None, committers=None):
494
"""Gather statistics from a revision id.
496
:param revid: The revision id to gather statistics from, if None, then
497
no revision specific statistics are gathered.
498
:param committers: Optional parameter controlling whether to grab
499
a count of committers from the revision specific statistics.
500
:return: A dictionary of statistics. Currently this contains:
501
committers: The number of committers if requested.
502
firstrev: A tuple with timestamp, timezone for the penultimate left
503
most ancestor of revid, if revid is not the NULL_REVISION.
504
latestrev: A tuple with timestamp, timezone for revid, if revid is
505
not the NULL_REVISION.
506
revisions: The total revision count in the repository.
507
size: An estimate disk size of the repository in bytes.
509
with self.lock_read():
511
if revid and committers:
512
result['committers'] = 0
513
if revid and revid != _mod_revision.NULL_REVISION:
514
graph = self.get_graph()
516
all_committers = set()
517
revisions = [r for (r, p) in graph.iter_ancestry([revid])
518
if r != _mod_revision.NULL_REVISION]
521
# ignore the revisions in the middle - just grab first and last
522
revisions = revisions[0], revisions[-1]
523
for revision in self.get_revisions(revisions):
524
if not last_revision:
525
last_revision = revision
527
all_committers.add(revision.committer)
528
first_revision = revision
530
result['committers'] = len(all_committers)
531
result['firstrev'] = (first_revision.timestamp,
532
first_revision.timezone)
533
result['latestrev'] = (last_revision.timestamp,
534
last_revision.timezone)
537
def find_branches(self, using=False):
538
"""Find branches underneath this repository.
540
This will include branches inside other branches.
542
:param using: If True, list only branches using this repository.
544
if using and not self.is_shared():
545
return self.controldir.list_branches()
547
class Evaluator(object):
550
self.first_call = True
552
def __call__(self, controldir):
553
# On the first call, the parameter is always the controldir
554
# containing the current repo.
555
if not self.first_call:
557
repository = controldir.open_repository()
558
except errors.NoRepositoryPresent:
561
return False, ([], repository)
562
self.first_call = False
563
value = (controldir.list_branches(), None)
567
for branches, repository in controldir.ControlDir.find_controldirs(
568
self.user_transport, evaluate=Evaluator()):
569
if branches is not None:
571
if not using and repository is not None:
572
ret.extend(repository.find_branches())
575
def search_missing_revision_ids(self, other,
576
find_ghosts=True, revision_ids=None, if_present_ids=None,
578
"""Return the revision ids that other has that this does not.
580
These are returned in topological order.
582
revision_ids: only return revision ids included by revision_id.
584
with self.lock_read():
585
return InterRepository.get(other, self).search_missing_revision_ids(
586
find_ghosts=find_ghosts, revision_ids=revision_ids,
587
if_present_ids=if_present_ids, limit=limit)
591
"""Open the repository rooted at base.
593
For instance, if the repository is at URL/.bzr/repository,
594
Repository.open(URL) -> a Repository instance.
596
control = controldir.ControlDir.open(base)
597
return control.open_repository()
599
def copy_content_into(self, destination, revision_id=None):
600
"""Make a complete copy of the content in self into destination.
602
This is a destructive operation! Do not use it on existing
605
return InterRepository.get(self, destination).copy_content(revision_id)
607
def commit_write_group(self):
608
"""Commit the contents accrued within the current write group.
610
:seealso: start_write_group.
612
:return: it may return an opaque hint that can be passed to 'pack'.
614
if self._write_group is not self.get_transaction():
615
# has an unlock or relock occured ?
616
raise errors.BzrError('mismatched lock context %r and '
618
(self.get_transaction(), self._write_group))
619
result = self._commit_write_group()
620
self._write_group = None
623
def _commit_write_group(self):
624
"""Template method for per-repository write group cleanup.
626
This is called before the write group is considered to be
627
finished and should ensure that all data handed to the repository
628
for writing during the write group is safely committed (to the
629
extent possible considering file system caching etc).
632
def suspend_write_group(self):
633
"""Suspend a write group.
635
:raise UnsuspendableWriteGroup: If the write group can not be
637
:return: List of tokens
639
raise errors.UnsuspendableWriteGroup(self)
641
def refresh_data(self):
642
"""Re-read any data needed to synchronise with disk.
644
This method is intended to be called after another repository instance
645
(such as one used by a smart server) has inserted data into the
646
repository. On all repositories this will work outside of write groups.
647
Some repository formats (pack and newer for breezy native formats)
648
support refresh_data inside write groups. If called inside a write
649
group on a repository that does not support refreshing in a write group
650
IsInWriteGroupError will be raised.
654
def resume_write_group(self, tokens):
655
if not self.is_write_locked():
656
raise errors.NotWriteLocked(self)
657
if self._write_group:
658
raise errors.BzrError('already in a write group')
659
self._resume_write_group(tokens)
660
# so we can detect unlock/relock - the write group is now entered.
661
self._write_group = self.get_transaction()
663
def _resume_write_group(self, tokens):
664
raise errors.UnsuspendableWriteGroup(self)
666
def fetch(self, source, revision_id=None, find_ghosts=False):
667
"""Fetch the content required to construct revision_id from source.
669
If revision_id is None, then all content is copied.
671
fetch() may not be used when the repository is in a write group -
672
either finish the current write group before using fetch, or use
673
fetch before starting the write group.
675
:param find_ghosts: Find and copy revisions in the source that are
676
ghosts in the target (and not reachable directly by walking out to
677
the first-present revision in target from revision_id).
678
:param revision_id: If specified, all the content needed for this
679
revision ID will be copied to the target. Fetch will determine for
680
itself which content needs to be copied.
682
if self.is_in_write_group():
683
raise errors.InternalBzrError(
684
"May not fetch while in a write group.")
685
# fast path same-url fetch operations
686
# TODO: lift out to somewhere common with RemoteRepository
687
# <https://bugs.launchpad.net/bzr/+bug/401646>
688
if (self.has_same_location(source)
689
and self._has_same_fallbacks(source)):
690
# check that last_revision is in 'from' and then return a
692
if (revision_id is not None and
693
not _mod_revision.is_null(revision_id)):
694
self.get_revision(revision_id)
696
inter = InterRepository.get(source, self)
697
return inter.fetch(revision_id=revision_id, find_ghosts=find_ghosts)
699
def create_bundle(self, target, base, fileobj, format=None):
700
return serializer.write_bundle(self, target, base, fileobj, format)
702
def get_commit_builder(self, branch, parents, config_stack, timestamp=None,
703
timezone=None, committer=None, revprops=None,
704
revision_id=None, lossy=False):
705
"""Obtain a CommitBuilder for this repository.
707
:param branch: Branch to commit to.
708
:param parents: Revision ids of the parents of the new revision.
709
:param config_stack: Configuration stack to use.
710
:param timestamp: Optional timestamp recorded for commit.
711
:param timezone: Optional timezone for timestamp.
712
:param committer: Optional committer to set for commit.
713
:param revprops: Optional dictionary of revision properties.
714
:param revision_id: Optional revision id.
715
:param lossy: Whether to discard data that can not be natively
716
represented, when pushing to a foreign VCS
718
raise NotImplementedError(self.get_commit_builder)
720
@only_raises(errors.LockNotHeld, errors.LockBroken)
722
if (self.control_files._lock_count == 1 and
723
self.control_files._lock_mode == 'w'):
724
if self._write_group is not None:
725
self.abort_write_group()
726
self.control_files.unlock()
727
raise errors.BzrError(
728
'Must end write groups before releasing write locks.')
729
self.control_files.unlock()
730
if self.control_files._lock_count == 0:
731
for repo in self._fallback_repositories:
734
def clone(self, controldir, revision_id=None):
735
"""Clone this repository into controldir using the current format.
737
Currently no check is made that the format of this repository and
738
the bzrdir format are compatible. FIXME RBC 20060201.
740
:return: The newly created destination repository.
742
with self.lock_read():
743
# TODO: deprecate after 0.16; cloning this with all its settings is
744
# probably not very useful -- mbp 20070423
745
dest_repo = self._create_sprouting_repo(
746
controldir, shared=self.is_shared())
747
self.copy_content_into(dest_repo, revision_id)
750
def start_write_group(self):
751
"""Start a write group in the repository.
753
Write groups are used by repositories which do not have a 1:1 mapping
754
between file ids and backend store to manage the insertion of data from
755
both fetch and commit operations.
757
A write lock is required around the
758
start_write_group/commit_write_group for the support of lock-requiring
761
One can only insert data into a repository inside a write group.
765
if not self.is_write_locked():
766
raise errors.NotWriteLocked(self)
767
if self._write_group:
768
raise errors.BzrError('already in a write group')
769
self._start_write_group()
770
# so we can detect unlock/relock - the write group is now entered.
771
self._write_group = self.get_transaction()
773
def _start_write_group(self):
774
"""Template method for per-repository write group startup.
776
This is called before the write group is considered to be
780
def sprout(self, to_bzrdir, revision_id=None):
781
"""Create a descendent repository for new development.
783
Unlike clone, this does not copy the settings of the repository.
785
with self.lock_read():
786
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
787
dest_repo.fetch(self, revision_id=revision_id)
790
def _create_sprouting_repo(self, a_controldir, shared):
792
a_controldir._format, self.controldir._format.__class__):
793
# use target default format.
794
dest_repo = a_controldir.create_repository()
796
# Most control formats need the repository to be specifically
797
# created, but on some old all-in-one formats it's not needed
799
dest_repo = self._format.initialize(
800
a_controldir, shared=shared)
801
except errors.UninitializableFormat:
802
dest_repo = a_controldir.open_repository()
805
def has_revision(self, revision_id):
806
"""True if this repository has a copy of the revision."""
807
with self.lock_read():
808
return revision_id in self.has_revisions((revision_id,))
810
def has_revisions(self, revision_ids):
811
"""Probe to find out the presence of multiple revisions.
813
:param revision_ids: An iterable of revision_ids.
814
:return: A set of the revision_ids that were present.
816
raise NotImplementedError(self.has_revisions)
818
def get_revision(self, revision_id):
819
"""Return the Revision object for a named revision."""
820
with self.lock_read():
821
return self.get_revisions([revision_id])[0]
823
def get_revision_reconcile(self, revision_id):
824
"""'reconcile' helper routine that allows access to a revision always.
826
This variant of get_revision does not cross check the weave graph
827
against the revision one as get_revision does: but it should only
828
be used by reconcile, or reconcile-alike commands that are correcting
829
or testing the revision graph.
831
raise NotImplementedError(self.get_revision_reconcile)
833
def get_revisions(self, revision_ids):
834
"""Get many revisions at once.
836
Repositories that need to check data on every revision read should
837
subclass this method.
840
for revid, rev in self.iter_revisions(revision_ids):
842
raise errors.NoSuchRevision(self, revid)
844
return [revs[revid] for revid in revision_ids]
846
def iter_revisions(self, revision_ids):
847
"""Iterate over revision objects.
849
:param revision_ids: An iterable of revisions to examine. None may be
850
passed to request all revisions known to the repository. Note that
851
not all repositories can find unreferenced revisions; for those
852
repositories only referenced ones will be returned.
853
:return: An iterator of (revid, revision) tuples. Absent revisions (
854
those asked for but not available) are returned as (revid, None).
855
N.B.: Revisions are not necessarily yielded in order.
857
raise NotImplementedError(self.iter_revisions)
859
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
860
"""Produce a generator of revision deltas.
862
Note that the input is a sequence of REVISIONS, not revision_ids.
863
Trees will be held in memory until the generator exits.
864
Each delta is relative to the revision's lefthand predecessor.
866
:param specific_fileids: if not None, the result is filtered
867
so that only those file-ids, their parents and their
868
children are included.
870
raise NotImplementedError(self.get_deltas_for_revisions)
872
def get_revision_delta(self, revision_id, specific_fileids=None):
873
"""Return the delta for one revision.
875
The delta is relative to the left-hand predecessor of the
878
:param specific_fileids: if not None, the result is filtered
879
so that only those file-ids, their parents and their
880
children are included.
882
with self.lock_read():
883
r = self.get_revision(revision_id)
884
return list(self.get_deltas_for_revisions(
885
[r], specific_fileids=specific_fileids))[0]
887
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
888
raise NotImplementedError(self.store_revision_signature)
890
def add_signature_text(self, revision_id, signature):
891
"""Store a signature text for a revision.
893
:param revision_id: Revision id of the revision
894
:param signature: Signature text.
896
raise NotImplementedError(self.add_signature_text)
898
def iter_files_bytes(self, desired_files):
899
"""Iterate through file versions.
901
Files will not necessarily be returned in the order they occur in
902
desired_files. No specific order is guaranteed.
904
Yields pairs of identifier, bytes_iterator. identifier is an opaque
905
value supplied by the caller as part of desired_files. It should
906
uniquely identify the file version in the caller's context. (Examples:
907
an index number or a TreeTransform trans_id.)
909
:param desired_files: a list of (file_id, revision_id, identifier)
912
raise NotImplementedError(self.iter_files_bytes)
914
def get_rev_id_for_revno(self, revno, known_pair):
915
"""Return the revision id of a revno, given a later (revno, revid)
916
pair in the same history.
918
:return: if found (True, revid). If the available history ran out
919
before reaching the revno, then this returns
920
(False, (closest_revno, closest_revid)).
922
known_revno, known_revid = known_pair
923
partial_history = [known_revid]
924
distance_from_known = known_revno - revno
925
if distance_from_known < 0:
927
'requested revno (%d) is later than given known revno (%d)'
928
% (revno, known_revno))
931
self, partial_history, stop_index=distance_from_known)
932
except errors.RevisionNotPresent as err:
933
if err.revision_id == known_revid:
934
# The start revision (known_revid) wasn't found.
936
# This is a stacked repository with no fallbacks, or a there's a
937
# left-hand ghost. Either way, even though the revision named in
938
# the error isn't in this repo, we know it's the next step in this
940
partial_history.append(err.revision_id)
941
if len(partial_history) <= distance_from_known:
942
# Didn't find enough history to get a revid for the revno.
943
earliest_revno = known_revno - len(partial_history) + 1
944
return (False, (earliest_revno, partial_history[-1]))
945
if len(partial_history) - 1 > distance_from_known:
946
raise AssertionError('_iter_for_revno returned too much history')
947
return (True, partial_history[-1])
950
"""Return True if this repository is flagged as a shared repository."""
951
raise NotImplementedError(self.is_shared)
953
def reconcile(self, other=None, thorough=False):
954
"""Reconcile this repository."""
955
raise NotImplementedError(self.reconcile)
957
def _refresh_data(self):
958
"""Helper called from lock_* to ensure coherency with disk.
960
The default implementation does nothing; it is however possible
961
for repositories to maintain loaded indices across multiple locks
962
by checking inside their implementation of this method to see
963
whether their indices are still valid. This depends of course on
964
the disk format being validatable in this manner. This method is
965
also called by the refresh_data() public interface to cause a refresh
966
to occur while in a write lock so that data inserted by a smart server
967
push operation is visible on the client's instance of the physical
971
def revision_tree(self, revision_id):
972
"""Return Tree for a revision on this branch.
974
`revision_id` may be NULL_REVISION for the empty tree revision.
976
raise NotImplementedError(self.revision_tree)
978
def revision_trees(self, revision_ids):
979
"""Return Trees for revisions in this repository.
981
:param revision_ids: a sequence of revision-ids;
982
a revision-id may not be None or b'null:'
984
raise NotImplementedError(self.revision_trees)
986
def pack(self, hint=None, clean_obsolete_packs=False):
987
"""Compress the data within the repository.
989
This operation only makes sense for some repository types. For other
990
types it should be a no-op that just returns.
992
This stub method does not require a lock, but subclasses should use
993
self.write_lock as this is a long running call it's reasonable to
994
implicitly lock for the user.
996
:param hint: If not supplied, the whole repository is packed.
997
If supplied, the repository may use the hint parameter as a
998
hint for the parts of the repository to pack. A hint can be
999
obtained from the result of commit_write_group(). Out of
1000
date hints are simply ignored, because concurrent operations
1001
can obsolete them rapidly.
1003
:param clean_obsolete_packs: Clean obsolete packs immediately after
1007
def get_transaction(self):
1008
return self.control_files.get_transaction()
1010
def get_parent_map(self, revision_ids):
1011
"""See graph.StackedParentsProvider.get_parent_map"""
1012
raise NotImplementedError(self.get_parent_map)
1014
def _get_parent_map_no_fallbacks(self, revision_ids):
1015
"""Same as Repository.get_parent_map except doesn't query fallbacks."""
1016
# revisions index works in keys; this just works in revisions
1017
# therefore wrap and unwrap
1020
for revision_id in revision_ids:
1021
if revision_id == _mod_revision.NULL_REVISION:
1022
result[revision_id] = ()
1023
elif revision_id is None:
1024
raise ValueError('get_parent_map(None) is not valid')
1026
query_keys.append((revision_id,))
1027
vf = self.revisions.without_fallbacks()
1028
for (revision_id,), parent_keys in viewitems(
1029
vf.get_parent_map(query_keys)):
1031
result[revision_id] = tuple([parent_revid
1032
for (parent_revid,) in parent_keys])
1034
result[revision_id] = (_mod_revision.NULL_REVISION,)
1037
def _make_parents_provider(self):
1038
if not self._format.supports_external_lookups:
1040
return graph.StackedParentsProvider(_LazyListJoin(
1041
[self._make_parents_provider_unstacked()],
1042
self._fallback_repositories))
1044
def _make_parents_provider_unstacked(self):
1045
return graph.CallableToParentsProviderAdapter(
1046
self._get_parent_map_no_fallbacks)
1048
def get_known_graph_ancestry(self, revision_ids):
1049
"""Return the known graph for a set of revision ids and their ancestors.
1051
raise NotImplementedError(self.get_known_graph_ancestry)
1053
def get_file_graph(self):
1054
"""Return the graph walker for files."""
1055
raise NotImplementedError(self.get_file_graph)
1057
def get_graph(self, other_repository=None):
1058
"""Return the graph walker for this repository format"""
1059
parents_provider = self._make_parents_provider()
1060
if (other_repository is not None and
1061
not self.has_same_location(other_repository)):
1062
parents_provider = graph.StackedParentsProvider(
1063
[parents_provider, other_repository._make_parents_provider()])
1064
return graph.Graph(parents_provider)
1066
def set_make_working_trees(self, new_value):
1067
"""Set the policy flag for making working trees when creating branches.
1069
This only applies to branches that use this repository.
1071
The default is 'True'.
1072
:param new_value: True to restore the default, False to disable making
1075
raise NotImplementedError(self.set_make_working_trees)
1077
def make_working_trees(self):
1078
"""Returns the policy for making working trees on new branches."""
1079
raise NotImplementedError(self.make_working_trees)
1081
def sign_revision(self, revision_id, gpg_strategy):
1082
raise NotImplementedError(self.sign_revision)
1084
def verify_revision_signature(self, revision_id, gpg_strategy):
1085
"""Verify the signature on a revision.
1087
:param revision_id: the revision to verify
1088
:gpg_strategy: the GPGStrategy object to used
1090
:return: gpg.SIGNATURE_VALID or a failed SIGNATURE_ value
1092
raise NotImplementedError(self.verify_revision_signature)
1094
def verify_revision_signatures(self, revision_ids, gpg_strategy):
1095
"""Verify revision signatures for a number of revisions.
1097
:param revision_id: the revision to verify
1098
:gpg_strategy: the GPGStrategy object to used
1099
:return: Iterator over tuples with revision id, result and keys
1101
with self.lock_read():
1102
for revid in revision_ids:
1103
(result, key) = self.verify_revision_signature(revid, gpg_strategy)
1104
yield revid, result, key
1106
def has_signature_for_revision_id(self, revision_id):
1107
"""Query for a revision signature for revision_id in the repository."""
1108
raise NotImplementedError(self.has_signature_for_revision_id)
1110
def get_signature_text(self, revision_id):
1111
"""Return the text for a signature."""
1112
raise NotImplementedError(self.get_signature_text)
1114
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
1115
"""Check consistency of all history of given revision_ids.
1117
Different repository implementations should override _check().
1119
:param revision_ids: A non-empty list of revision_ids whose ancestry
1120
will be checked. Typically the last revision_id of a branch.
1121
:param callback_refs: A dict of check-refs to resolve and callback
1122
the check/_check method on the items listed as wanting the ref.
1124
:param check_repo: If False do not check the repository contents, just
1125
calculate the data callback_refs requires and call them back.
1127
return self._check(revision_ids=revision_ids, callback_refs=callback_refs,
1128
check_repo=check_repo)
1130
def _check(self, revision_ids=None, callback_refs=None, check_repo=True):
1131
raise NotImplementedError(self.check)
1133
def _warn_if_deprecated(self, branch=None):
1134
if not self._format.is_deprecated():
1136
global _deprecation_warning_done
1137
if _deprecation_warning_done:
1141
conf = config.GlobalStack()
1143
conf = branch.get_config_stack()
1144
if 'format_deprecation' in conf.get('suppress_warnings'):
1146
warning("Format %s for %s is deprecated -"
1147
" please use 'brz upgrade' to get better performance"
1148
% (self._format, self.controldir.transport.base))
1150
_deprecation_warning_done = True
1152
def supports_rich_root(self):
1153
return self._format.rich_root_data
1155
def _check_ascii_revisionid(self, revision_id, method):
1156
"""Private helper for ascii-only repositories."""
1157
# weave repositories refuse to store revisionids that are non-ascii.
1158
if revision_id is not None:
1159
# weaves require ascii revision ids.
1160
if isinstance(revision_id, text_type):
1162
revision_id.encode('ascii')
1163
except UnicodeEncodeError:
1164
raise errors.NonAsciiRevisionId(method, self)
1167
revision_id.decode('ascii')
1168
except UnicodeDecodeError:
1169
raise errors.NonAsciiRevisionId(method, self)
1172
class RepositoryFormatRegistry(controldir.ControlComponentFormatRegistry):
1173
"""Repository format registry."""
1175
def get_default(self):
1176
"""Return the current default format."""
1177
return controldir.format_registry.make_controldir('default').repository_format
1180
network_format_registry = registry.FormatRegistry()
1181
"""Registry of formats indexed by their network name.
1183
The network name for a repository format is an identifier that can be used when
1184
referring to formats with smart server operations. See
1185
RepositoryFormat.network_name() for more detail.
1189
format_registry = RepositoryFormatRegistry(network_format_registry)
1190
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
1192
This can contain either format instances themselves, or classes/factories that
1193
can be called to obtain one.
1197
#####################################################################
1198
# Repository Formats
1200
class RepositoryFormat(controldir.ControlComponentFormat):
1201
"""A repository format.
1203
Formats provide four things:
1204
* An initialization routine to construct repository data on disk.
1205
* a optional format string which is used when the BzrDir supports
1207
* an open routine which returns a Repository instance.
1208
* A network name for referring to the format in smart server RPC
1211
There is one and only one Format subclass for each on-disk format. But
1212
there can be one Repository subclass that is used for several different
1213
formats. The _format attribute on a Repository instance can be used to
1214
determine the disk format.
1216
Formats are placed in a registry by their format string for reference
1217
during opening. These should be subclasses of RepositoryFormat for
1220
Once a format is deprecated, just deprecate the initialize and open
1221
methods on the format class. Do not deprecate the object, as the
1222
object may be created even when a repository instance hasn't been
1225
Common instance attributes:
1226
_matchingcontroldir - the controldir format that the repository format was
1227
originally written to work with. This can be used if manually
1228
constructing a bzrdir and repository, or more commonly for test suite
1232
# Set to True or False in derived classes. True indicates that the format
1233
# supports ghosts gracefully.
1234
supports_ghosts = None
1235
# Can this repository be given external locations to lookup additional
1236
# data. Set to True or False in derived classes.
1237
supports_external_lookups = None
1238
# Does this format support CHK bytestring lookups. Set to True or False in
1240
supports_chks = None
1241
# Should fetch trigger a reconcile after the fetch? Only needed for
1242
# some repository formats that can suffer internal inconsistencies.
1243
_fetch_reconcile = False
1244
# Does this format have < O(tree_size) delta generation. Used to hint what
1245
# code path for commit, amongst other things.
1247
# Does doing a pack operation compress data? Useful for the pack UI command
1248
# (so if there is one pack, the operation can still proceed because it may
1249
# help), and for fetching when data won't have come from the same
1251
pack_compresses = False
1252
# Does the repository storage understand references to trees?
1253
supports_tree_reference = None
1254
# Is the format experimental ?
1255
experimental = False
1256
# Does this repository format escape funky characters, or does it create
1257
# files with similar names as the versioned files in its contents on disk
1259
supports_funky_characters = None
1260
# Does this repository format support leaving locks?
1261
supports_leaving_lock = None
1262
# Does this format support the full VersionedFiles interface?
1263
supports_full_versioned_files = None
1264
# Does this format support signing revision signatures?
1265
supports_revision_signatures = True
1266
# Can the revision graph have incorrect parents?
1267
revision_graph_can_have_wrong_parents = None
1268
# Does this format support setting revision ids?
1269
supports_setting_revision_ids = True
1270
# Does this format support rich root data?
1271
rich_root_data = None
1272
# Does this format support explicitly versioned directories?
1273
supports_versioned_directories = None
1274
# Can other repositories be nested into one of this format?
1275
supports_nesting_repositories = None
1276
# Is it possible for revisions to be present without being referenced
1278
supports_unreferenced_revisions = None
1279
# Does this format store the current Branch.nick in a revision when
1281
supports_storing_branch_nick = True
1282
# Does the format support overriding the transport to use
1283
supports_overriding_transport = True
1284
# Does the format support setting custom revision properties?
1285
supports_custom_revision_properties = True
1286
# Does the format record per-file revision metadata?
1287
records_per_file_revision = True
1290
return "%s()" % self.__class__.__name__
1292
def __eq__(self, other):
1293
# format objects are generally stateless
1294
return isinstance(other, self.__class__)
1296
def __ne__(self, other):
1297
return not self == other
1299
def get_format_description(self):
1300
"""Return the short description for this format."""
1301
raise NotImplementedError(self.get_format_description)
1303
def initialize(self, controldir, shared=False):
1304
"""Initialize a repository of this format in controldir.
1306
:param controldir: The controldir to put the new repository in it.
1307
:param shared: The repository should be initialized as a sharable one.
1308
:returns: The new repository object.
1310
This may raise UninitializableFormat if shared repository are not
1311
compatible the controldir.
1313
raise NotImplementedError(self.initialize)
1315
def is_supported(self):
1316
"""Is this format supported?
1318
Supported formats must be initializable and openable.
1319
Unsupported formats may not support initialization or committing or
1320
some other features depending on the reason for not being supported.
1324
def is_deprecated(self):
1325
"""Is this format deprecated?
1327
Deprecated formats may trigger a user-visible warning recommending
1328
the user to upgrade. They are still fully supported.
1332
def network_name(self):
1333
"""A simple byte string uniquely identifying this format for RPC calls.
1335
MetaDir repository formats use their disk format string to identify the
1336
repository over the wire. All in one formats such as bzr < 0.8, and
1337
foreign formats like svn/git and hg should use some marker which is
1338
unique and immutable.
1340
raise NotImplementedError(self.network_name)
1342
def check_conversion_target(self, target_format):
1343
if self.rich_root_data and not target_format.rich_root_data:
1344
raise errors.BadConversionTarget(
1345
'Does not support rich root data.', target_format,
1347
if (self.supports_tree_reference
1348
and not getattr(target_format, 'supports_tree_reference', False)):
1349
raise errors.BadConversionTarget(
1350
'Does not support nested trees', target_format,
1353
def open(self, controldir, _found=False):
1354
"""Return an instance of this format for a controldir.
1356
_found is a private parameter, do not use it.
1358
raise NotImplementedError(self.open)
1360
def _run_post_repo_init_hooks(self, repository, controldir, shared):
1361
from .controldir import ControlDir, RepoInitHookParams
1362
hooks = ControlDir.hooks['post_repo_init']
1365
params = RepoInitHookParams(repository, self, controldir, shared)
1370
# formats which have no format string are not discoverable or independently
1371
# creatable on disk, so are not registered in format_registry. They're
1372
# all in breezy.bzr.knitreponow. When an instance of one of these is
1373
# needed, it's constructed directly by the ControlDir. Non-native formats where
1374
# the repository is not separately opened are similar.
1376
format_registry.register_lazy(
1377
b'Bazaar-NG Knit Repository Format 1',
1378
'breezy.bzr.knitrepo',
1379
'RepositoryFormatKnit1',
1382
format_registry.register_lazy(
1383
b'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
1384
'breezy.bzr.knitrepo',
1385
'RepositoryFormatKnit3',
1388
format_registry.register_lazy(
1389
b'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
1390
'breezy.bzr.knitrepo',
1391
'RepositoryFormatKnit4',
1394
# Pack-based formats. There is one format for pre-subtrees, and one for
1395
# post-subtrees to allow ease of testing.
1396
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
1397
format_registry.register_lazy(
1398
b'Bazaar pack repository format 1 (needs bzr 0.92)\n',
1399
'breezy.bzr.knitpack_repo',
1400
'RepositoryFormatKnitPack1',
1402
format_registry.register_lazy(
1403
b'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
1404
'breezy.bzr.knitpack_repo',
1405
'RepositoryFormatKnitPack3',
1407
format_registry.register_lazy(
1408
b'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
1409
'breezy.bzr.knitpack_repo',
1410
'RepositoryFormatKnitPack4',
1412
format_registry.register_lazy(
1413
b'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
1414
'breezy.bzr.knitpack_repo',
1415
'RepositoryFormatKnitPack5',
1417
format_registry.register_lazy(
1418
b'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
1419
'breezy.bzr.knitpack_repo',
1420
'RepositoryFormatKnitPack5RichRoot',
1422
format_registry.register_lazy(
1423
b'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
1424
'breezy.bzr.knitpack_repo',
1425
'RepositoryFormatKnitPack5RichRootBroken',
1427
format_registry.register_lazy(
1428
b'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
1429
'breezy.bzr.knitpack_repo',
1430
'RepositoryFormatKnitPack6',
1432
format_registry.register_lazy(
1433
b'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
1434
'breezy.bzr.knitpack_repo',
1435
'RepositoryFormatKnitPack6RichRoot',
1437
format_registry.register_lazy(
1438
b'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
1439
'breezy.bzr.groupcompress_repo',
1440
'RepositoryFormat2a',
1443
# Development formats.
1444
# Check their docstrings to see if/when they are obsolete.
1445
format_registry.register_lazy(
1446
(b"Bazaar development format 2 with subtree support "
1447
b"(needs bzr.dev from before 1.8)\n"),
1448
'breezy.bzr.knitpack_repo',
1449
'RepositoryFormatPackDevelopment2Subtree',
1451
format_registry.register_lazy(
1452
b'Bazaar development format 8\n',
1453
'breezy.bzr.groupcompress_repo',
1454
'RepositoryFormat2aSubtree',
1458
class InterRepository(InterObject):
1459
"""This class represents operations taking place between two repositories.
1461
Its instances have methods like copy_content and fetch, and contain
1462
references to the source and target repositories these operations can be
1465
Often we will provide convenience methods on 'repository' which carry out
1466
operations with another repository - they will always forward to
1467
InterRepository.get(other).method_name(parameters).
1471
"""The available optimised InterRepository types."""
1473
def copy_content(self, revision_id=None):
1474
"""Make a complete copy of the content in self into destination.
1476
This is a destructive operation! Do not use it on existing
1479
:param revision_id: Only copy the content needed to construct
1480
revision_id and its parents.
1482
with self.lock_write():
1484
self.target.set_make_working_trees(
1485
self.source.make_working_trees())
1486
except NotImplementedError:
1488
self.target.fetch(self.source, revision_id=revision_id)
1490
def fetch(self, revision_id=None, find_ghosts=False):
1491
"""Fetch the content required to construct revision_id.
1493
The content is copied from self.source to self.target.
1495
:param revision_id: if None all content is copied, if NULL_REVISION no
1499
raise NotImplementedError(self.fetch)
1501
def search_missing_revision_ids(
1502
self, find_ghosts=True, revision_ids=None, if_present_ids=None,
1504
"""Return the revision ids that source has that target does not.
1506
:param revision_ids: return revision ids included by these
1507
revision_ids. NoSuchRevision will be raised if any of these
1508
revisions are not present.
1509
:param if_present_ids: like revision_ids, but will not cause
1510
NoSuchRevision if any of these are absent, instead they will simply
1511
not be in the result. This is useful for e.g. finding revisions
1512
to fetch for tags, which may reference absent revisions.
1513
:param find_ghosts: If True find missing revisions in deep history
1514
rather than just finding the surface difference.
1515
:param limit: Maximum number of revisions to return, topologically
1517
:return: A breezy.graph.SearchResult.
1519
raise NotImplementedError(self.search_missing_revision_ids)
1522
def _same_model(source, target):
1523
"""True if source and target have the same data representation.
1525
Note: this is always called on the base class; overriding it in a
1526
subclass will have no effect.
1529
InterRepository._assert_same_model(source, target)
1531
except errors.IncompatibleRepositories as e:
1535
def _assert_same_model(source, target):
1536
"""Raise an exception if two repositories do not use the same model.
1538
if source.supports_rich_root() != target.supports_rich_root():
1539
raise errors.IncompatibleRepositories(source, target,
1540
"different rich-root support")
1541
if source._serializer != target._serializer:
1542
raise errors.IncompatibleRepositories(source, target,
1543
"different serializers")
1546
class CopyConverter(object):
1547
"""A repository conversion tool which just performs a copy of the content.
1549
This is slow but quite reliable.
1552
def __init__(self, target_format):
1553
"""Create a CopyConverter.
1555
:param target_format: The format the resulting repository should be.
1557
self.target_format = target_format
1559
def convert(self, repo, pb):
1560
"""Perform the conversion of to_convert, giving feedback via pb.
1562
:param to_convert: The disk object to convert.
1563
:param pb: a progress bar to use for progress information.
1565
with ui.ui_factory.nested_progress_bar() as pb:
1568
# this is only useful with metadir layouts - separated repo content.
1569
# trigger an assertion if not such
1570
repo._format.get_format_string()
1571
self.repo_dir = repo.controldir
1572
pb.update(gettext('Moving repository to repository.backup'))
1573
self.repo_dir.transport.move('repository', 'repository.backup')
1574
backup_transport = self.repo_dir.transport.clone(
1575
'repository.backup')
1576
repo._format.check_conversion_target(self.target_format)
1577
self.source_repo = repo._format.open(self.repo_dir,
1579
_override_transport=backup_transport)
1580
pb.update(gettext('Creating new repository'))
1581
converted = self.target_format.initialize(self.repo_dir,
1582
self.source_repo.is_shared())
1583
converted.lock_write()
1585
pb.update(gettext('Copying content'))
1586
self.source_repo.copy_content_into(converted)
1589
pb.update(gettext('Deleting old repository content'))
1590
self.repo_dir.transport.delete_tree('repository.backup')
1591
ui.ui_factory.note(gettext('repository converted'))
1594
def _strip_NULL_ghosts(revision_graph):
1595
"""Also don't use this. more compatibility code for unmigrated clients."""
1596
# Filter ghosts, and null:
1597
if _mod_revision.NULL_REVISION in revision_graph:
1598
del revision_graph[_mod_revision.NULL_REVISION]
1599
for key, parents in viewitems(revision_graph):
1600
revision_graph[key] = tuple(parent for parent in parents if parent
1602
return revision_graph
1605
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
1606
stop_revision=None):
1607
"""Extend the partial history to include a given index
1609
If a stop_index is supplied, stop when that index has been reached.
1610
If a stop_revision is supplied, stop when that revision is
1611
encountered. Otherwise, stop when the beginning of history is
1614
:param stop_index: The index which should be present. When it is
1615
present, history extension will stop.
1616
:param stop_revision: The revision id which should be present. When
1617
it is encountered, history extension will stop.
1619
start_revision = partial_history_cache[-1]
1620
graph = repo.get_graph()
1621
iterator = graph.iter_lefthand_ancestry(start_revision,
1622
(_mod_revision.NULL_REVISION,))
1624
# skip the last revision in the list
1627
if (stop_index is not None and
1628
len(partial_history_cache) > stop_index):
1630
if partial_history_cache[-1] == stop_revision:
1632
revision_id = next(iterator)
1633
partial_history_cache.append(revision_id)
1634
except StopIteration:
1639
class _LazyListJoin(object):
1640
"""An iterable yielding the contents of many lists as one list.
1642
Each iterator made from this will reflect the current contents of the lists
1643
at the time the iterator is made.
1645
This is used by Repository's _make_parents_provider implementation so that
1648
pp = repo._make_parents_provider() # uses a list of fallback repos
1649
pp.add_fallback_repository(other_repo) # appends to that list
1650
result = pp.get_parent_map(...)
1651
# The result will include revs from other_repo
1654
def __init__(self, *list_parts):
1655
self.list_parts = list_parts
1659
for list_part in self.list_parts:
1660
full_list.extend(list_part)
1661
return iter(full_list)
1664
return "%s.%s(%s)" % (self.__module__, self.__class__.__name__,
added
removed
breezy/repository.py
