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 bzrlib.lazy_import import lazy_import
20
lazy_import(globals(), """
33
revision as _mod_revision,
34
testament as _mod_testament,
38
from bzrlib.bundle import serializer
39
from bzrlib.i18n import gettext
49
from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
50
from bzrlib.inter import InterObject
51
from bzrlib.lock import _RelockDebugMixin, LogicalLockResult
52
from bzrlib.trace import (
53
log_exception_quietly, note, mutter, mutter_callsite, warning)
56
# Old formats display a warning, but only once
57
_deprecation_warning_done = False
60
class IsInWriteGroupError(errors.InternalBzrError):
62
_fmt = "May not refresh_data of repo %(repo)s while in a write group."
64
def __init__(self, repo):
65
errors.InternalBzrError.__init__(self, repo=repo)
68
class CommitBuilder(object):
69
"""Provides an interface to build up a commit.
71
This allows describing a tree to be committed without needing to
72
know the internals of the format of the repository.
75
# all clients should supply tree roots.
76
record_root_entry = True
77
# whether this commit builder supports the record_entry_contents interface
78
supports_record_entry_contents = False
79
# whether this commit builder will automatically update the branch that is
81
updates_branch = False
83
def __init__(self, repository, parents, config_stack, timestamp=None,
84
timezone=None, committer=None, revprops=None,
85
revision_id=None, lossy=False):
86
"""Initiate a CommitBuilder.
88
:param repository: Repository to commit to.
89
:param parents: Revision ids of the parents of the new revision.
90
:param timestamp: Optional timestamp recorded for commit.
91
:param timezone: Optional timezone for timestamp.
92
:param committer: Optional committer to set for commit.
93
:param revprops: Optional dictionary of revision properties.
94
:param revision_id: Optional revision id.
95
:param lossy: Whether to discard data that can not be natively
96
represented, when pushing to a foreign VCS
98
self._config_stack = config_stack
101
if committer is None:
102
self._committer = self._config_stack.get('email')
103
elif not isinstance(committer, unicode):
104
self._committer = committer.decode() # throw if non-ascii
106
self._committer = committer
108
self._new_revision_id = revision_id
109
self.parents = parents
110
self.repository = repository
113
if revprops is not None:
114
self._validate_revprops(revprops)
115
self._revprops.update(revprops)
117
if timestamp is None:
118
timestamp = time.time()
119
# Restrict resolution to 1ms
120
self._timestamp = round(timestamp, 3)
123
self._timezone = osutils.local_time_offset()
125
self._timezone = int(timezone)
127
self._generate_revision_if_needed()
129
def any_changes(self):
130
"""Return True if any entries were changed.
132
This includes merge-only changes. It is the core for the --unchanged
135
:return: True if any changes have occured.
137
raise NotImplementedError(self.any_changes)
139
def _validate_unicode_text(self, text, context):
140
"""Verify things like commit messages don't have bogus characters."""
142
raise ValueError('Invalid value for %s: %r' % (context, text))
144
def _validate_revprops(self, revprops):
145
for key, value in revprops.iteritems():
146
# We know that the XML serializers do not round trip '\r'
147
# correctly, so refuse to accept them
148
if not isinstance(value, basestring):
149
raise ValueError('revision property (%s) is not a valid'
150
' (unicode) string: %r' % (key, value))
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 _gen_revision_id(self):
186
"""Return new revision-id."""
187
return generate_ids.gen_revision_id(self._committer, self._timestamp)
189
def _generate_revision_if_needed(self):
190
"""Create a revision id if None was supplied.
192
If the repository can not support user-specified revision ids
193
they should override this function and raise CannotSetRevisionId
194
if _new_revision_id is not None.
196
:raises: CannotSetRevisionId
198
if self._new_revision_id is None:
199
self._new_revision_id = self._gen_revision_id()
200
self.random_revid = True
202
self.random_revid = False
204
def will_record_deletes(self):
205
"""Tell the commit builder that deletes are being notified.
207
This enables the accumulation of an inventory delta; for the resulting
208
commit to be valid, deletes against the basis MUST be recorded via
209
builder.record_delete().
211
raise NotImplementedError(self.will_record_deletes)
213
def record_iter_changes(self, tree, basis_revision_id, iter_changes):
214
"""Record a new tree via iter_changes.
216
:param tree: The tree to obtain text contents from for changed objects.
217
:param basis_revision_id: The revision id of the tree the iter_changes
218
has been generated against. Currently assumed to be the same
219
as self.parents[0] - if it is not, errors may occur.
220
:param iter_changes: An iter_changes iterator with the changes to apply
221
to basis_revision_id. The iterator must not include any items with
222
a current kind of None - missing items must be either filtered out
223
or errored-on beefore record_iter_changes sees the item.
224
:return: A generator of (file_id, relpath, fs_hash) tuples for use with
227
raise NotImplementedError(self.record_iter_changes)
230
class RepositoryWriteLockResult(LogicalLockResult):
231
"""The result of write locking a repository.
233
:ivar repository_token: The token obtained from the underlying lock, or
235
:ivar unlock: A callable which will unlock the lock.
238
def __init__(self, unlock, repository_token):
239
LogicalLockResult.__init__(self, unlock)
240
self.repository_token = repository_token
243
return "RepositoryWriteLockResult(%s, %s)" % (self.repository_token,
247
######################################################################
251
class Repository(_RelockDebugMixin, controldir.ControlComponent):
252
"""Repository holding history for one or more branches.
254
The repository holds and retrieves historical information including
255
revisions and file history. It's normally accessed only by the Branch,
256
which views a particular line of development through that history.
258
See VersionedFileRepository in bzrlib.vf_repository for the
259
base class for most Bazaar repositories.
262
def abort_write_group(self, suppress_errors=False):
263
"""Commit the contents accrued within the current write group.
265
:param suppress_errors: if true, abort_write_group will catch and log
266
unexpected errors that happen during the abort, rather than
267
allowing them to propagate. Defaults to False.
269
:seealso: start_write_group.
271
if self._write_group is not self.get_transaction():
272
# has an unlock or relock occured ?
275
'(suppressed) mismatched lock context and write group. %r, %r',
276
self._write_group, self.get_transaction())
278
raise errors.BzrError(
279
'mismatched lock context and write group. %r, %r' %
280
(self._write_group, self.get_transaction()))
282
self._abort_write_group()
283
except Exception, exc:
284
self._write_group = None
285
if not suppress_errors:
287
mutter('abort_write_group failed')
288
log_exception_quietly()
289
note(gettext('bzr: ERROR (ignored): %s'), exc)
290
self._write_group = None
292
def _abort_write_group(self):
293
"""Template method for per-repository write group cleanup.
295
This is called during abort before the write group is considered to be
296
finished and should cleanup any internal state accrued during the write
297
group. There is no requirement that data handed to the repository be
298
*not* made available - this is not a rollback - but neither should any
299
attempt be made to ensure that data added is fully commited. Abort is
300
invoked when an error has occured so futher disk or network operations
301
may not be possible or may error and if possible should not be
305
def add_fallback_repository(self, repository):
306
"""Add a repository to use for looking up data not held locally.
308
:param repository: A repository.
310
raise NotImplementedError(self.add_fallback_repository)
312
def _check_fallback_repository(self, repository):
313
"""Check that this repository can fallback to repository safely.
315
Raise an error if not.
317
:param repository: A repository to fallback to.
319
return InterRepository._assert_same_model(self, repository)
321
def all_revision_ids(self):
322
"""Returns a list of all the revision ids in the repository.
324
This is conceptually deprecated because code should generally work on
325
the graph reachable from a particular revision, and ignore any other
326
revisions that might be present. There is no direct replacement
329
if 'evil' in debug.debug_flags:
330
mutter_callsite(2, "all_revision_ids is linear with history.")
331
return self._all_revision_ids()
333
def _all_revision_ids(self):
334
"""Returns a list of all the revision ids in the repository.
336
These are in as much topological order as the underlying store can
339
raise NotImplementedError(self._all_revision_ids)
341
def break_lock(self):
342
"""Break a lock if one is present from another instance.
344
Uses the ui factory to ask for confirmation if the lock may be from
347
self.control_files.break_lock()
350
def create(controldir):
351
"""Construct the current default format repository in controldir."""
352
return RepositoryFormat.get_default_format().initialize(controldir)
354
def __init__(self, _format, controldir, control_files):
355
"""instantiate a Repository.
357
:param _format: The format of the repository on disk.
358
:param controldir: The ControlDir of the repository.
359
:param control_files: Control files to use for locking, etc.
361
# In the future we will have a single api for all stores for
362
# getting file texts, inventories and revisions, then
363
# this construct will accept instances of those things.
364
super(Repository, self).__init__()
365
self._format = _format
366
# the following are part of the public API for Repository:
367
self.bzrdir = controldir
368
self.control_files = control_files
370
self._write_group = None
371
# Additional places to query for data.
372
self._fallback_repositories = []
375
def user_transport(self):
376
return self.bzrdir.user_transport
379
def control_transport(self):
380
return self._transport
383
if self._fallback_repositories:
384
return '%s(%r, fallback_repositories=%r)' % (
385
self.__class__.__name__,
387
self._fallback_repositories)
389
return '%s(%r)' % (self.__class__.__name__,
392
def _has_same_fallbacks(self, other_repo):
393
"""Returns true if the repositories have the same fallbacks."""
394
my_fb = self._fallback_repositories
395
other_fb = other_repo._fallback_repositories
396
if len(my_fb) != len(other_fb):
398
for f, g in zip(my_fb, other_fb):
399
if not f.has_same_location(g):
403
def has_same_location(self, other):
404
"""Returns a boolean indicating if this repository is at the same
405
location as another repository.
407
This might return False even when two repository objects are accessing
408
the same physical repository via different URLs.
410
if self.__class__ is not other.__class__:
412
return (self.control_url == other.control_url)
414
def is_in_write_group(self):
415
"""Return True if there is an open write group.
417
:seealso: start_write_group.
419
return self._write_group is not None
422
return self.control_files.is_locked()
424
def is_write_locked(self):
425
"""Return True if this object is write locked."""
426
return self.is_locked() and self.control_files._lock_mode == 'w'
428
def lock_write(self, token=None):
429
"""Lock this repository for writing.
431
This causes caching within the repository obejct to start accumlating
432
data during reads, and allows a 'write_group' to be obtained. Write
433
groups must be used for actual data insertion.
435
A token should be passed in if you know that you have locked the object
436
some other way, and need to synchronise this object's state with that
439
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
441
:param token: if this is already locked, then lock_write will fail
442
unless the token matches the existing lock.
443
:returns: a token if this instance supports tokens, otherwise None.
444
:raises TokenLockingNotSupported: when a token is given but this
445
instance doesn't support using token locks.
446
:raises MismatchedToken: if the specified token doesn't match the token
447
of the existing lock.
448
:seealso: start_write_group.
449
:return: A RepositoryWriteLockResult.
451
locked = self.is_locked()
452
token = self.control_files.lock_write(token=token)
454
self._warn_if_deprecated()
456
for repo in self._fallback_repositories:
457
# Writes don't affect fallback repos
460
return RepositoryWriteLockResult(self.unlock, token)
463
"""Lock the repository for read operations.
465
:return: An object with an unlock method which will release the lock
468
locked = self.is_locked()
469
self.control_files.lock_read()
471
self._warn_if_deprecated()
473
for repo in self._fallback_repositories:
476
return LogicalLockResult(self.unlock)
478
def get_physical_lock_status(self):
479
return self.control_files.get_physical_lock_status()
481
def leave_lock_in_place(self):
482
"""Tell this repository not to release the physical lock when this
485
If lock_write doesn't return a token, then this method is not supported.
487
self.control_files.leave_in_place()
489
def dont_leave_lock_in_place(self):
490
"""Tell this repository to release the physical lock when this
491
object is unlocked, even if it didn't originally acquire it.
493
If lock_write doesn't return a token, then this method is not supported.
495
self.control_files.dont_leave_in_place()
498
def gather_stats(self, revid=None, committers=None):
499
"""Gather statistics from a revision id.
501
:param revid: The revision id to gather statistics from, if None, then
502
no revision specific statistics are gathered.
503
:param committers: Optional parameter controlling whether to grab
504
a count of committers from the revision specific statistics.
505
:return: A dictionary of statistics. Currently this contains:
506
committers: The number of committers if requested.
507
firstrev: A tuple with timestamp, timezone for the penultimate left
508
most ancestor of revid, if revid is not the NULL_REVISION.
509
latestrev: A tuple with timestamp, timezone for revid, if revid is
510
not the NULL_REVISION.
511
revisions: The total revision count in the repository.
512
size: An estimate disk size of the repository in bytes.
515
if revid and committers:
516
result['committers'] = 0
517
if revid and revid != _mod_revision.NULL_REVISION:
518
graph = self.get_graph()
520
all_committers = set()
521
revisions = [r for (r, p) in graph.iter_ancestry([revid])
522
if r != _mod_revision.NULL_REVISION]
525
# ignore the revisions in the middle - just grab first and last
526
revisions = revisions[0], revisions[-1]
527
for revision in self.get_revisions(revisions):
528
if not last_revision:
529
last_revision = revision
531
all_committers.add(revision.committer)
532
first_revision = revision
534
result['committers'] = len(all_committers)
535
result['firstrev'] = (first_revision.timestamp,
536
first_revision.timezone)
537
result['latestrev'] = (last_revision.timestamp,
538
last_revision.timezone)
541
def find_branches(self, using=False):
542
"""Find branches underneath this repository.
544
This will include branches inside other branches.
546
:param using: If True, list only branches using this repository.
548
if using and not self.is_shared():
549
return self.bzrdir.list_branches()
550
class Evaluator(object):
553
self.first_call = True
555
def __call__(self, controldir):
556
# On the first call, the parameter is always the controldir
557
# containing the current repo.
558
if not self.first_call:
560
repository = controldir.open_repository()
561
except errors.NoRepositoryPresent:
564
return False, ([], repository)
565
self.first_call = False
566
value = (controldir.list_branches(), None)
570
for branches, repository in controldir.ControlDir.find_bzrdirs(
571
self.user_transport, evaluate=Evaluator()):
572
if branches is not None:
574
if not using and repository is not None:
575
ret.extend(repository.find_branches())
579
def search_missing_revision_ids(self, other,
580
revision_id=symbol_versioning.DEPRECATED_PARAMETER,
581
find_ghosts=True, revision_ids=None, if_present_ids=None,
583
"""Return the revision ids that other has that this does not.
585
These are returned in topological order.
587
revision_id: only return revision ids included by revision_id.
589
if symbol_versioning.deprecated_passed(revision_id):
590
symbol_versioning.warn(
591
'search_missing_revision_ids(revision_id=...) was '
592
'deprecated in 2.4. Use revision_ids=[...] instead.',
593
DeprecationWarning, stacklevel=3)
594
if revision_ids is not None:
595
raise AssertionError(
596
'revision_ids is mutually exclusive with revision_id')
597
if revision_id is not None:
598
revision_ids = [revision_id]
599
return InterRepository.get(other, self).search_missing_revision_ids(
600
find_ghosts=find_ghosts, revision_ids=revision_ids,
601
if_present_ids=if_present_ids, limit=limit)
605
"""Open the repository rooted at base.
607
For instance, if the repository is at URL/.bzr/repository,
608
Repository.open(URL) -> a Repository instance.
610
control = controldir.ControlDir.open(base)
611
return control.open_repository()
613
def copy_content_into(self, destination, revision_id=None):
614
"""Make a complete copy of the content in self into destination.
616
This is a destructive operation! Do not use it on existing
619
return InterRepository.get(self, destination).copy_content(revision_id)
621
def commit_write_group(self):
622
"""Commit the contents accrued within the current write group.
624
:seealso: start_write_group.
626
:return: it may return an opaque hint that can be passed to 'pack'.
628
if self._write_group is not self.get_transaction():
629
# has an unlock or relock occured ?
630
raise errors.BzrError('mismatched lock context %r and '
632
(self.get_transaction(), self._write_group))
633
result = self._commit_write_group()
634
self._write_group = None
637
def _commit_write_group(self):
638
"""Template method for per-repository write group cleanup.
640
This is called before the write group is considered to be
641
finished and should ensure that all data handed to the repository
642
for writing during the write group is safely committed (to the
643
extent possible considering file system caching etc).
646
def suspend_write_group(self):
647
"""Suspend a write group.
649
:raise UnsuspendableWriteGroup: If the write group can not be
651
:return: List of tokens
653
raise errors.UnsuspendableWriteGroup(self)
655
def refresh_data(self):
656
"""Re-read any data needed to synchronise with disk.
658
This method is intended to be called after another repository instance
659
(such as one used by a smart server) has inserted data into the
660
repository. On all repositories this will work outside of write groups.
661
Some repository formats (pack and newer for bzrlib native formats)
662
support refresh_data inside write groups. If called inside a write
663
group on a repository that does not support refreshing in a write group
664
IsInWriteGroupError will be raised.
668
def resume_write_group(self, tokens):
669
if not self.is_write_locked():
670
raise errors.NotWriteLocked(self)
671
if self._write_group:
672
raise errors.BzrError('already in a write group')
673
self._resume_write_group(tokens)
674
# so we can detect unlock/relock - the write group is now entered.
675
self._write_group = self.get_transaction()
677
def _resume_write_group(self, tokens):
678
raise errors.UnsuspendableWriteGroup(self)
680
def fetch(self, source, revision_id=None, find_ghosts=False):
681
"""Fetch the content required to construct revision_id from source.
683
If revision_id is None, then all content is copied.
685
fetch() may not be used when the repository is in a write group -
686
either finish the current write group before using fetch, or use
687
fetch before starting the write group.
689
:param find_ghosts: Find and copy revisions in the source that are
690
ghosts in the target (and not reachable directly by walking out to
691
the first-present revision in target from revision_id).
692
:param revision_id: If specified, all the content needed for this
693
revision ID will be copied to the target. Fetch will determine for
694
itself which content needs to be copied.
696
if self.is_in_write_group():
697
raise errors.InternalBzrError(
698
"May not fetch while in a write group.")
699
# fast path same-url fetch operations
700
# TODO: lift out to somewhere common with RemoteRepository
701
# <https://bugs.launchpad.net/bzr/+bug/401646>
702
if (self.has_same_location(source)
703
and self._has_same_fallbacks(source)):
704
# check that last_revision is in 'from' and then return a
706
if (revision_id is not None and
707
not _mod_revision.is_null(revision_id)):
708
self.get_revision(revision_id)
710
inter = InterRepository.get(source, self)
711
return inter.fetch(revision_id=revision_id, find_ghosts=find_ghosts)
713
def create_bundle(self, target, base, fileobj, format=None):
714
return serializer.write_bundle(self, target, base, fileobj, format)
716
def get_commit_builder(self, branch, parents, config_stack, timestamp=None,
717
timezone=None, committer=None, revprops=None,
718
revision_id=None, lossy=False):
719
"""Obtain a CommitBuilder for this repository.
721
:param branch: Branch to commit to.
722
:param parents: Revision ids of the parents of the new revision.
723
:param config_stack: Configuration stack to use.
724
:param timestamp: Optional timestamp recorded for commit.
725
:param timezone: Optional timezone for timestamp.
726
:param committer: Optional committer to set for commit.
727
:param revprops: Optional dictionary of revision properties.
728
:param revision_id: Optional revision id.
729
:param lossy: Whether to discard data that can not be natively
730
represented, when pushing to a foreign VCS
732
raise NotImplementedError(self.get_commit_builder)
734
@only_raises(errors.LockNotHeld, errors.LockBroken)
736
if (self.control_files._lock_count == 1 and
737
self.control_files._lock_mode == 'w'):
738
if self._write_group is not None:
739
self.abort_write_group()
740
self.control_files.unlock()
741
raise errors.BzrError(
742
'Must end write groups before releasing write locks.')
743
self.control_files.unlock()
744
if self.control_files._lock_count == 0:
745
for repo in self._fallback_repositories:
749
def clone(self, controldir, revision_id=None):
750
"""Clone this repository into controldir using the current format.
752
Currently no check is made that the format of this repository and
753
the bzrdir format are compatible. FIXME RBC 20060201.
755
:return: The newly created destination repository.
757
# TODO: deprecate after 0.16; cloning this with all its settings is
758
# probably not very useful -- mbp 20070423
759
dest_repo = self._create_sprouting_repo(
760
controldir, shared=self.is_shared())
761
self.copy_content_into(dest_repo, revision_id)
764
def start_write_group(self):
765
"""Start a write group in the repository.
767
Write groups are used by repositories which do not have a 1:1 mapping
768
between file ids and backend store to manage the insertion of data from
769
both fetch and commit operations.
771
A write lock is required around the start_write_group/commit_write_group
772
for the support of lock-requiring repository formats.
774
One can only insert data into a repository inside a write group.
778
if not self.is_write_locked():
779
raise errors.NotWriteLocked(self)
780
if self._write_group:
781
raise errors.BzrError('already in a write group')
782
self._start_write_group()
783
# so we can detect unlock/relock - the write group is now entered.
784
self._write_group = self.get_transaction()
786
def _start_write_group(self):
787
"""Template method for per-repository write group startup.
789
This is called before the write group is considered to be
794
def sprout(self, to_bzrdir, revision_id=None):
795
"""Create a descendent repository for new development.
797
Unlike clone, this does not copy the settings of the repository.
799
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
800
dest_repo.fetch(self, revision_id=revision_id)
803
def _create_sprouting_repo(self, a_bzrdir, shared):
804
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
805
# use target default format.
806
dest_repo = a_bzrdir.create_repository()
808
# Most control formats need the repository to be specifically
809
# created, but on some old all-in-one formats it's not needed
811
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
812
except errors.UninitializableFormat:
813
dest_repo = a_bzrdir.open_repository()
817
def has_revision(self, revision_id):
818
"""True if this repository has a copy of the revision."""
819
return revision_id in self.has_revisions((revision_id,))
822
def has_revisions(self, revision_ids):
823
"""Probe to find out the presence of multiple revisions.
825
:param revision_ids: An iterable of revision_ids.
826
:return: A set of the revision_ids that were present.
828
raise NotImplementedError(self.has_revisions)
831
def get_revision(self, revision_id):
832
"""Return the Revision object for a named revision."""
833
return self.get_revisions([revision_id])[0]
835
def get_revision_reconcile(self, revision_id):
836
"""'reconcile' helper routine that allows access to a revision always.
838
This variant of get_revision does not cross check the weave graph
839
against the revision one as get_revision does: but it should only
840
be used by reconcile, or reconcile-alike commands that are correcting
841
or testing the revision graph.
843
raise NotImplementedError(self.get_revision_reconcile)
845
def get_revisions(self, revision_ids):
846
"""Get many revisions at once.
848
Repositories that need to check data on every revision read should
849
subclass this method.
851
raise NotImplementedError(self.get_revisions)
853
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
854
"""Produce a generator of revision deltas.
856
Note that the input is a sequence of REVISIONS, not revision_ids.
857
Trees will be held in memory until the generator exits.
858
Each delta is relative to the revision's lefthand predecessor.
860
:param specific_fileids: if not None, the result is filtered
861
so that only those file-ids, their parents and their
862
children are included.
864
# Get the revision-ids of interest
865
required_trees = set()
866
for revision in revisions:
867
required_trees.add(revision.revision_id)
868
required_trees.update(revision.parent_ids[:1])
870
# Get the matching filtered trees. Note that it's more
871
# efficient to pass filtered trees to changes_from() rather
872
# than doing the filtering afterwards. changes_from() could
873
# arguably do the filtering itself but it's path-based, not
874
# file-id based, so filtering before or afterwards is
876
if specific_fileids is None:
877
trees = dict((t.get_revision_id(), t) for
878
t in self.revision_trees(required_trees))
880
trees = dict((t.get_revision_id(), t) for
881
t in self._filtered_revision_trees(required_trees,
884
# Calculate the deltas
885
for revision in revisions:
886
if not revision.parent_ids:
887
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
889
old_tree = trees[revision.parent_ids[0]]
890
yield trees[revision.revision_id].changes_from(old_tree)
893
def get_revision_delta(self, revision_id, specific_fileids=None):
894
"""Return the delta for one revision.
896
The delta is relative to the left-hand predecessor of the
899
:param specific_fileids: if not None, the result is filtered
900
so that only those file-ids, their parents and their
901
children are included.
903
r = self.get_revision(revision_id)
904
return list(self.get_deltas_for_revisions([r],
905
specific_fileids=specific_fileids))[0]
908
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
909
signature = gpg_strategy.sign(plaintext)
910
self.add_signature_text(revision_id, signature)
912
def add_signature_text(self, revision_id, signature):
913
"""Store a signature text for a revision.
915
:param revision_id: Revision id of the revision
916
:param signature: Signature text.
918
raise NotImplementedError(self.add_signature_text)
920
def _find_parent_ids_of_revisions(self, revision_ids):
921
"""Find all parent ids that are mentioned in the revision graph.
923
:return: set of revisions that are parents of revision_ids which are
924
not part of revision_ids themselves
926
parent_map = self.get_parent_map(revision_ids)
928
map(parent_ids.update, parent_map.itervalues())
929
parent_ids.difference_update(revision_ids)
930
parent_ids.discard(_mod_revision.NULL_REVISION)
933
def iter_files_bytes(self, desired_files):
934
"""Iterate through file versions.
936
Files will not necessarily be returned in the order they occur in
937
desired_files. No specific order is guaranteed.
939
Yields pairs of identifier, bytes_iterator. identifier is an opaque
940
value supplied by the caller as part of desired_files. It should
941
uniquely identify the file version in the caller's context. (Examples:
942
an index number or a TreeTransform trans_id.)
944
:param desired_files: a list of (file_id, revision_id, identifier)
947
raise NotImplementedError(self.iter_files_bytes)
949
def get_rev_id_for_revno(self, revno, known_pair):
950
"""Return the revision id of a revno, given a later (revno, revid)
951
pair in the same history.
953
:return: if found (True, revid). If the available history ran out
954
before reaching the revno, then this returns
955
(False, (closest_revno, closest_revid)).
957
known_revno, known_revid = known_pair
958
partial_history = [known_revid]
959
distance_from_known = known_revno - revno
960
if distance_from_known < 0:
962
'requested revno (%d) is later than given known revno (%d)'
963
% (revno, known_revno))
966
self, partial_history, stop_index=distance_from_known)
967
except errors.RevisionNotPresent, err:
968
if err.revision_id == known_revid:
969
# The start revision (known_revid) wasn't found.
971
# This is a stacked repository with no fallbacks, or a there's a
972
# left-hand ghost. Either way, even though the revision named in
973
# the error isn't in this repo, we know it's the next step in this
975
partial_history.append(err.revision_id)
976
if len(partial_history) <= distance_from_known:
977
# Didn't find enough history to get a revid for the revno.
978
earliest_revno = known_revno - len(partial_history) + 1
979
return (False, (earliest_revno, partial_history[-1]))
980
if len(partial_history) - 1 > distance_from_known:
981
raise AssertionError('_iter_for_revno returned too much history')
982
return (True, partial_history[-1])
985
"""Return True if this repository is flagged as a shared repository."""
986
raise NotImplementedError(self.is_shared)
989
def reconcile(self, other=None, thorough=False):
990
"""Reconcile this repository."""
991
from bzrlib.reconcile import RepoReconciler
992
reconciler = RepoReconciler(self, thorough=thorough)
993
reconciler.reconcile()
996
def _refresh_data(self):
997
"""Helper called from lock_* to ensure coherency with disk.
999
The default implementation does nothing; it is however possible
1000
for repositories to maintain loaded indices across multiple locks
1001
by checking inside their implementation of this method to see
1002
whether their indices are still valid. This depends of course on
1003
the disk format being validatable in this manner. This method is
1004
also called by the refresh_data() public interface to cause a refresh
1005
to occur while in a write lock so that data inserted by a smart server
1006
push operation is visible on the client's instance of the physical
1011
def revision_tree(self, revision_id):
1012
"""Return Tree for a revision on this branch.
1014
`revision_id` may be NULL_REVISION for the empty tree revision.
1016
raise NotImplementedError(self.revision_tree)
1018
def revision_trees(self, revision_ids):
1019
"""Return Trees for revisions in this repository.
1021
:param revision_ids: a sequence of revision-ids;
1022
a revision-id may not be None or 'null:'
1024
raise NotImplementedError(self.revision_trees)
1027
@symbol_versioning.deprecated_method(
1028
symbol_versioning.deprecated_in((2, 4, 0)))
1029
def get_ancestry(self, revision_id, topo_sorted=True):
1030
"""Return a list of revision-ids integrated by a revision.
1032
The first element of the list is always None, indicating the origin
1033
revision. This might change when we have history horizons, or
1034
perhaps we should have a new API.
1036
This is topologically sorted.
1038
if 'evil' in debug.debug_flags:
1039
mutter_callsite(2, "get_ancestry is linear with history.")
1040
if _mod_revision.is_null(revision_id):
1042
if not self.has_revision(revision_id):
1043
raise errors.NoSuchRevision(self, revision_id)
1044
graph = self.get_graph()
1046
search = graph._make_breadth_first_searcher([revision_id])
1049
found, ghosts = search.next_with_ghosts()
1050
except StopIteration:
1053
if _mod_revision.NULL_REVISION in keys:
1054
keys.remove(_mod_revision.NULL_REVISION)
1056
parent_map = graph.get_parent_map(keys)
1057
keys = tsort.topo_sort(parent_map)
1058
return [None] + list(keys)
1060
def pack(self, hint=None, clean_obsolete_packs=False):
1061
"""Compress the data within the repository.
1063
This operation only makes sense for some repository types. For other
1064
types it should be a no-op that just returns.
1066
This stub method does not require a lock, but subclasses should use
1067
@needs_write_lock as this is a long running call it's reasonable to
1068
implicitly lock for the user.
1070
:param hint: If not supplied, the whole repository is packed.
1071
If supplied, the repository may use the hint parameter as a
1072
hint for the parts of the repository to pack. A hint can be
1073
obtained from the result of commit_write_group(). Out of
1074
date hints are simply ignored, because concurrent operations
1075
can obsolete them rapidly.
1077
:param clean_obsolete_packs: Clean obsolete packs immediately after
1081
def get_transaction(self):
1082
return self.control_files.get_transaction()
1084
def get_parent_map(self, revision_ids):
1085
"""See graph.StackedParentsProvider.get_parent_map"""
1086
raise NotImplementedError(self.get_parent_map)
1088
def _get_parent_map_no_fallbacks(self, revision_ids):
1089
"""Same as Repository.get_parent_map except doesn't query fallbacks."""
1090
# revisions index works in keys; this just works in revisions
1091
# therefore wrap and unwrap
1094
for revision_id in revision_ids:
1095
if revision_id == _mod_revision.NULL_REVISION:
1096
result[revision_id] = ()
1097
elif revision_id is None:
1098
raise ValueError('get_parent_map(None) is not valid')
1100
query_keys.append((revision_id ,))
1101
vf = self.revisions.without_fallbacks()
1102
for ((revision_id,), parent_keys) in \
1103
vf.get_parent_map(query_keys).iteritems():
1105
result[revision_id] = tuple([parent_revid
1106
for (parent_revid,) in parent_keys])
1108
result[revision_id] = (_mod_revision.NULL_REVISION,)
1111
def _make_parents_provider(self):
1112
if not self._format.supports_external_lookups:
1114
return graph.StackedParentsProvider(_LazyListJoin(
1115
[self._make_parents_provider_unstacked()],
1116
self._fallback_repositories))
1118
def _make_parents_provider_unstacked(self):
1119
return graph.CallableToParentsProviderAdapter(
1120
self._get_parent_map_no_fallbacks)
1123
def get_known_graph_ancestry(self, revision_ids):
1124
"""Return the known graph for a set of revision ids and their ancestors.
1126
raise NotImplementedError(self.get_known_graph_ancestry)
1128
def get_file_graph(self):
1129
"""Return the graph walker for files."""
1130
raise NotImplementedError(self.get_file_graph)
1132
def get_graph(self, other_repository=None):
1133
"""Return the graph walker for this repository format"""
1134
parents_provider = self._make_parents_provider()
1135
if (other_repository is not None and
1136
not self.has_same_location(other_repository)):
1137
parents_provider = graph.StackedParentsProvider(
1138
[parents_provider, other_repository._make_parents_provider()])
1139
return graph.Graph(parents_provider)
1142
def set_make_working_trees(self, new_value):
1143
"""Set the policy flag for making working trees when creating branches.
1145
This only applies to branches that use this repository.
1147
The default is 'True'.
1148
:param new_value: True to restore the default, False to disable making
1151
raise NotImplementedError(self.set_make_working_trees)
1153
def make_working_trees(self):
1154
"""Returns the policy for making working trees on new branches."""
1155
raise NotImplementedError(self.make_working_trees)
1158
def sign_revision(self, revision_id, gpg_strategy):
1159
testament = _mod_testament.Testament.from_revision(self, revision_id)
1160
plaintext = testament.as_short_text()
1161
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1164
def verify_revision_signature(self, revision_id, gpg_strategy):
1165
"""Verify the signature on a revision.
1167
:param revision_id: the revision to verify
1168
:gpg_strategy: the GPGStrategy object to used
1170
:return: gpg.SIGNATURE_VALID or a failed SIGNATURE_ value
1172
if not self.has_signature_for_revision_id(revision_id):
1173
return gpg.SIGNATURE_NOT_SIGNED, None
1174
signature = self.get_signature_text(revision_id)
1176
testament = _mod_testament.Testament.from_revision(self, revision_id)
1177
plaintext = testament.as_short_text()
1179
return gpg_strategy.verify(signature, plaintext)
1182
def verify_revision_signatures(self, revision_ids, gpg_strategy):
1183
"""Verify revision signatures for a number of revisions.
1185
:param revision_id: the revision to verify
1186
:gpg_strategy: the GPGStrategy object to used
1187
:return: Iterator over tuples with revision id, result and keys
1189
for revid in revision_ids:
1190
(result, key) = self.verify_revision_signature(revid, gpg_strategy)
1191
yield revid, result, key
1193
def has_signature_for_revision_id(self, revision_id):
1194
"""Query for a revision signature for revision_id in the repository."""
1195
raise NotImplementedError(self.has_signature_for_revision_id)
1197
def get_signature_text(self, revision_id):
1198
"""Return the text for a signature."""
1199
raise NotImplementedError(self.get_signature_text)
1201
def check(self, revision_ids=None, callback_refs=None, check_repo=True):
1202
"""Check consistency of all history of given revision_ids.
1204
Different repository implementations should override _check().
1206
:param revision_ids: A non-empty list of revision_ids whose ancestry
1207
will be checked. Typically the last revision_id of a branch.
1208
:param callback_refs: A dict of check-refs to resolve and callback
1209
the check/_check method on the items listed as wanting the ref.
1211
:param check_repo: If False do not check the repository contents, just
1212
calculate the data callback_refs requires and call them back.
1214
return self._check(revision_ids=revision_ids, callback_refs=callback_refs,
1215
check_repo=check_repo)
1217
def _check(self, revision_ids=None, callback_refs=None, check_repo=True):
1218
raise NotImplementedError(self.check)
1220
def _warn_if_deprecated(self, branch=None):
1221
if not self._format.is_deprecated():
1223
global _deprecation_warning_done
1224
if _deprecation_warning_done:
1228
conf = config.GlobalStack()
1230
conf = branch.get_config_stack()
1231
if 'format_deprecation' in conf.get('suppress_warnings'):
1233
warning("Format %s for %s is deprecated -"
1234
" please use 'bzr upgrade' to get better performance"
1235
% (self._format, self.bzrdir.transport.base))
1237
_deprecation_warning_done = True
1239
def supports_rich_root(self):
1240
return self._format.rich_root_data
1242
def _check_ascii_revisionid(self, revision_id, method):
1243
"""Private helper for ascii-only repositories."""
1244
# weave repositories refuse to store revisionids that are non-ascii.
1245
if revision_id is not None:
1246
# weaves require ascii revision ids.
1247
if isinstance(revision_id, unicode):
1249
revision_id.encode('ascii')
1250
except UnicodeEncodeError:
1251
raise errors.NonAsciiRevisionId(method, self)
1254
revision_id.decode('ascii')
1255
except UnicodeDecodeError:
1256
raise errors.NonAsciiRevisionId(method, self)
1259
class MetaDirRepository(Repository):
1260
"""Repositories in the new meta-dir layout.
1262
:ivar _transport: Transport for access to repository control files,
1263
typically pointing to .bzr/repository.
1266
def __init__(self, _format, a_bzrdir, control_files):
1267
super(MetaDirRepository, self).__init__(_format, a_bzrdir, control_files)
1268
self._transport = control_files._transport
1270
def is_shared(self):
1271
"""Return True if this repository is flagged as a shared repository."""
1272
return self._transport.has('shared-storage')
1275
def set_make_working_trees(self, new_value):
1276
"""Set the policy flag for making working trees when creating branches.
1278
This only applies to branches that use this repository.
1280
The default is 'True'.
1281
:param new_value: True to restore the default, False to disable making
1286
self._transport.delete('no-working-trees')
1287
except errors.NoSuchFile:
1290
self._transport.put_bytes('no-working-trees', '',
1291
mode=self.bzrdir._get_file_mode())
1293
def make_working_trees(self):
1294
"""Returns the policy for making working trees on new branches."""
1295
return not self._transport.has('no-working-trees')
1298
def update_feature_flags(self, updated_flags):
1299
"""Update the feature flags for this branch.
1301
:param updated_flags: Dictionary mapping feature names to necessities
1302
A necessity can be None to indicate the feature should be removed
1304
self._format._update_feature_flags(updated_flags)
1305
self.control_transport.put_bytes('format', self._format.as_string())
1308
class RepositoryFormatRegistry(controldir.ControlComponentFormatRegistry):
1309
"""Repository format registry."""
1311
def get_default(self):
1312
"""Return the current default format."""
1313
return controldir.format_registry.make_bzrdir('default').repository_format
1316
network_format_registry = registry.FormatRegistry()
1317
"""Registry of formats indexed by their network name.
1319
The network name for a repository format is an identifier that can be used when
1320
referring to formats with smart server operations. See
1321
RepositoryFormat.network_name() for more detail.
1325
format_registry = RepositoryFormatRegistry(network_format_registry)
1326
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
1328
This can contain either format instances themselves, or classes/factories that
1329
can be called to obtain one.
1333
#####################################################################
1334
# Repository Formats
1336
class RepositoryFormat(controldir.ControlComponentFormat):
1337
"""A repository format.
1339
Formats provide four things:
1340
* An initialization routine to construct repository data on disk.
1341
* a optional format string which is used when the BzrDir supports
1343
* an open routine which returns a Repository instance.
1344
* A network name for referring to the format in smart server RPC
1347
There is one and only one Format subclass for each on-disk format. But
1348
there can be one Repository subclass that is used for several different
1349
formats. The _format attribute on a Repository instance can be used to
1350
determine the disk format.
1352
Formats are placed in a registry by their format string for reference
1353
during opening. These should be subclasses of RepositoryFormat for
1356
Once a format is deprecated, just deprecate the initialize and open
1357
methods on the format class. Do not deprecate the object, as the
1358
object may be created even when a repository instance hasn't been
1361
Common instance attributes:
1362
_matchingbzrdir - the controldir format that the repository format was
1363
originally written to work with. This can be used if manually
1364
constructing a bzrdir and repository, or more commonly for test suite
1368
# Set to True or False in derived classes. True indicates that the format
1369
# supports ghosts gracefully.
1370
supports_ghosts = None
1371
# Can this repository be given external locations to lookup additional
1372
# data. Set to True or False in derived classes.
1373
supports_external_lookups = None
1374
# Does this format support CHK bytestring lookups. Set to True or False in
1376
supports_chks = None
1377
# Should fetch trigger a reconcile after the fetch? Only needed for
1378
# some repository formats that can suffer internal inconsistencies.
1379
_fetch_reconcile = False
1380
# Does this format have < O(tree_size) delta generation. Used to hint what
1381
# code path for commit, amongst other things.
1383
# Does doing a pack operation compress data? Useful for the pack UI command
1384
# (so if there is one pack, the operation can still proceed because it may
1385
# help), and for fetching when data won't have come from the same
1387
pack_compresses = False
1388
# Does the repository storage understand references to trees?
1389
supports_tree_reference = None
1390
# Is the format experimental ?
1391
experimental = False
1392
# Does this repository format escape funky characters, or does it create
1393
# files with similar names as the versioned files in its contents on disk
1395
supports_funky_characters = None
1396
# Does this repository format support leaving locks?
1397
supports_leaving_lock = None
1398
# Does this format support the full VersionedFiles interface?
1399
supports_full_versioned_files = None
1400
# Does this format support signing revision signatures?
1401
supports_revision_signatures = True
1402
# Can the revision graph have incorrect parents?
1403
revision_graph_can_have_wrong_parents = None
1404
# Does this format support rich root data?
1405
rich_root_data = None
1406
# Does this format support explicitly versioned directories?
1407
supports_versioned_directories = None
1408
# Can other repositories be nested into one of this format?
1409
supports_nesting_repositories = None
1410
# Is it possible for revisions to be present without being referenced
1412
supports_unreferenced_revisions = None
1415
return "%s()" % self.__class__.__name__
1417
def __eq__(self, other):
1418
# format objects are generally stateless
1419
return isinstance(other, self.__class__)
1421
def __ne__(self, other):
1422
return not self == other
1424
def get_format_description(self):
1425
"""Return the short description for this format."""
1426
raise NotImplementedError(self.get_format_description)
1428
def initialize(self, controldir, shared=False):
1429
"""Initialize a repository of this format in controldir.
1431
:param controldir: The controldir to put the new repository in it.
1432
:param shared: The repository should be initialized as a sharable one.
1433
:returns: The new repository object.
1435
This may raise UninitializableFormat if shared repository are not
1436
compatible the controldir.
1438
raise NotImplementedError(self.initialize)
1440
def is_supported(self):
1441
"""Is this format supported?
1443
Supported formats must be initializable and openable.
1444
Unsupported formats may not support initialization or committing or
1445
some other features depending on the reason for not being supported.
1449
def is_deprecated(self):
1450
"""Is this format deprecated?
1452
Deprecated formats may trigger a user-visible warning recommending
1453
the user to upgrade. They are still fully supported.
1457
def network_name(self):
1458
"""A simple byte string uniquely identifying this format for RPC calls.
1460
MetaDir repository formats use their disk format string to identify the
1461
repository over the wire. All in one formats such as bzr < 0.8, and
1462
foreign formats like svn/git and hg should use some marker which is
1463
unique and immutable.
1465
raise NotImplementedError(self.network_name)
1467
def check_conversion_target(self, target_format):
1468
if self.rich_root_data and not target_format.rich_root_data:
1469
raise errors.BadConversionTarget(
1470
'Does not support rich root data.', target_format,
1472
if (self.supports_tree_reference and
1473
not getattr(target_format, 'supports_tree_reference', False)):
1474
raise errors.BadConversionTarget(
1475
'Does not support nested trees', target_format,
1478
def open(self, controldir, _found=False):
1479
"""Return an instance of this format for a controldir.
1481
_found is a private parameter, do not use it.
1483
raise NotImplementedError(self.open)
1485
def _run_post_repo_init_hooks(self, repository, controldir, shared):
1486
from bzrlib.controldir import ControlDir, RepoInitHookParams
1487
hooks = ControlDir.hooks['post_repo_init']
1490
params = RepoInitHookParams(repository, self, controldir, shared)
1495
class RepositoryFormatMetaDir(bzrdir.BzrFormat, RepositoryFormat):
1496
"""Common base class for the new repositories using the metadir layout."""
1498
rich_root_data = False
1499
supports_tree_reference = False
1500
supports_external_lookups = False
1501
supports_leaving_lock = True
1502
supports_nesting_repositories = True
1505
def _matchingbzrdir(self):
1506
matching = bzrdir.BzrDirMetaFormat1()
1507
matching.repository_format = self
1511
RepositoryFormat.__init__(self)
1512
bzrdir.BzrFormat.__init__(self)
1514
def _create_control_files(self, a_bzrdir):
1515
"""Create the required files and the initial control_files object."""
1516
# FIXME: RBC 20060125 don't peek under the covers
1517
# NB: no need to escape relative paths that are url safe.
1518
repository_transport = a_bzrdir.get_repository_transport(self)
1519
control_files = lockable_files.LockableFiles(repository_transport,
1520
'lock', lockdir.LockDir)
1521
control_files.create_lock()
1522
return control_files
1524
def _upload_blank_content(self, a_bzrdir, dirs, files, utf8_files, shared):
1525
"""Upload the initial blank content."""
1526
control_files = self._create_control_files(a_bzrdir)
1527
control_files.lock_write()
1528
transport = control_files._transport
1530
utf8_files += [('shared-storage', '')]
1532
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
1533
for (filename, content_stream) in files:
1534
transport.put_file(filename, content_stream,
1535
mode=a_bzrdir._get_file_mode())
1536
for (filename, content_bytes) in utf8_files:
1537
transport.put_bytes_non_atomic(filename, content_bytes,
1538
mode=a_bzrdir._get_file_mode())
1540
control_files.unlock()
1543
def find_format(klass, a_bzrdir):
1544
"""Return the format for the repository object in a_bzrdir.
1546
This is used by bzr native formats that have a "format" file in
1547
the repository. Other methods may be used by different types of
1551
transport = a_bzrdir.get_repository_transport(None)
1552
format_string = transport.get_bytes("format")
1553
except errors.NoSuchFile:
1554
raise errors.NoRepositoryPresent(a_bzrdir)
1555
return klass._find_format(format_registry, 'repository', format_string)
1557
def check_support_status(self, allow_unsupported, recommend_upgrade=True,
1559
RepositoryFormat.check_support_status(self,
1560
allow_unsupported=allow_unsupported, recommend_upgrade=recommend_upgrade,
1562
bzrdir.BzrFormat.check_support_status(self, allow_unsupported=allow_unsupported,
1563
recommend_upgrade=recommend_upgrade, basedir=basedir)
1566
# formats which have no format string are not discoverable or independently
1567
# creatable on disk, so are not registered in format_registry. They're
1568
# all in bzrlib.repofmt.knitreponow. When an instance of one of these is
1569
# needed, it's constructed directly by the ControlDir. Non-native formats where
1570
# the repository is not separately opened are similar.
1572
format_registry.register_lazy(
1573
'Bazaar-NG Knit Repository Format 1',
1574
'bzrlib.repofmt.knitrepo',
1575
'RepositoryFormatKnit1',
1578
format_registry.register_lazy(
1579
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
1580
'bzrlib.repofmt.knitrepo',
1581
'RepositoryFormatKnit3',
1584
format_registry.register_lazy(
1585
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
1586
'bzrlib.repofmt.knitrepo',
1587
'RepositoryFormatKnit4',
1590
# Pack-based formats. There is one format for pre-subtrees, and one for
1591
# post-subtrees to allow ease of testing.
1592
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
1593
format_registry.register_lazy(
1594
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
1595
'bzrlib.repofmt.knitpack_repo',
1596
'RepositoryFormatKnitPack1',
1598
format_registry.register_lazy(
1599
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
1600
'bzrlib.repofmt.knitpack_repo',
1601
'RepositoryFormatKnitPack3',
1603
format_registry.register_lazy(
1604
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
1605
'bzrlib.repofmt.knitpack_repo',
1606
'RepositoryFormatKnitPack4',
1608
format_registry.register_lazy(
1609
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
1610
'bzrlib.repofmt.knitpack_repo',
1611
'RepositoryFormatKnitPack5',
1613
format_registry.register_lazy(
1614
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
1615
'bzrlib.repofmt.knitpack_repo',
1616
'RepositoryFormatKnitPack5RichRoot',
1618
format_registry.register_lazy(
1619
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
1620
'bzrlib.repofmt.knitpack_repo',
1621
'RepositoryFormatKnitPack5RichRootBroken',
1623
format_registry.register_lazy(
1624
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
1625
'bzrlib.repofmt.knitpack_repo',
1626
'RepositoryFormatKnitPack6',
1628
format_registry.register_lazy(
1629
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
1630
'bzrlib.repofmt.knitpack_repo',
1631
'RepositoryFormatKnitPack6RichRoot',
1633
format_registry.register_lazy(
1634
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
1635
'bzrlib.repofmt.groupcompress_repo',
1636
'RepositoryFormat2a',
1639
# Development formats.
1640
# Check their docstrings to see if/when they are obsolete.
1641
format_registry.register_lazy(
1642
("Bazaar development format 2 with subtree support "
1643
"(needs bzr.dev from before 1.8)\n"),
1644
'bzrlib.repofmt.knitpack_repo',
1645
'RepositoryFormatPackDevelopment2Subtree',
1647
format_registry.register_lazy(
1648
'Bazaar development format 8\n',
1649
'bzrlib.repofmt.groupcompress_repo',
1650
'RepositoryFormat2aSubtree',
1654
class InterRepository(InterObject):
1655
"""This class represents operations taking place between two repositories.
1657
Its instances have methods like copy_content and fetch, and contain
1658
references to the source and target repositories these operations can be
1661
Often we will provide convenience methods on 'repository' which carry out
1662
operations with another repository - they will always forward to
1663
InterRepository.get(other).method_name(parameters).
1667
"""The available optimised InterRepository types."""
1670
def copy_content(self, revision_id=None):
1671
"""Make a complete copy of the content in self into destination.
1673
This is a destructive operation! Do not use it on existing
1676
:param revision_id: Only copy the content needed to construct
1677
revision_id and its parents.
1680
self.target.set_make_working_trees(self.source.make_working_trees())
1681
except NotImplementedError:
1683
self.target.fetch(self.source, revision_id=revision_id)
1686
def fetch(self, revision_id=None, find_ghosts=False):
1687
"""Fetch the content required to construct revision_id.
1689
The content is copied from self.source to self.target.
1691
:param revision_id: if None all content is copied, if NULL_REVISION no
1695
raise NotImplementedError(self.fetch)
1698
def search_missing_revision_ids(self,
1699
revision_id=symbol_versioning.DEPRECATED_PARAMETER,
1700
find_ghosts=True, revision_ids=None, if_present_ids=None,
1702
"""Return the revision ids that source has that target does not.
1704
:param revision_id: only return revision ids included by this
1706
:param revision_ids: return revision ids included by these
1707
revision_ids. NoSuchRevision will be raised if any of these
1708
revisions are not present.
1709
:param if_present_ids: like revision_ids, but will not cause
1710
NoSuchRevision if any of these are absent, instead they will simply
1711
not be in the result. This is useful for e.g. finding revisions
1712
to fetch for tags, which may reference absent revisions.
1713
:param find_ghosts: If True find missing revisions in deep history
1714
rather than just finding the surface difference.
1715
:param limit: Maximum number of revisions to return, topologically
1717
:return: A bzrlib.graph.SearchResult.
1719
raise NotImplementedError(self.search_missing_revision_ids)
1722
def _same_model(source, target):
1723
"""True if source and target have the same data representation.
1725
Note: this is always called on the base class; overriding it in a
1726
subclass will have no effect.
1729
InterRepository._assert_same_model(source, target)
1731
except errors.IncompatibleRepositories, e:
1735
def _assert_same_model(source, target):
1736
"""Raise an exception if two repositories do not use the same model.
1738
if source.supports_rich_root() != target.supports_rich_root():
1739
raise errors.IncompatibleRepositories(source, target,
1740
"different rich-root support")
1741
if source._serializer != target._serializer:
1742
raise errors.IncompatibleRepositories(source, target,
1743
"different serializers")
1746
class CopyConverter(object):
1747
"""A repository conversion tool which just performs a copy of the content.
1749
This is slow but quite reliable.
1752
def __init__(self, target_format):
1753
"""Create a CopyConverter.
1755
:param target_format: The format the resulting repository should be.
1757
self.target_format = target_format
1759
def convert(self, repo, pb):
1760
"""Perform the conversion of to_convert, giving feedback via pb.
1762
:param to_convert: The disk object to convert.
1763
:param pb: a progress bar to use for progress information.
1765
pb = ui.ui_factory.nested_progress_bar()
1768
# this is only useful with metadir layouts - separated repo content.
1769
# trigger an assertion if not such
1770
repo._format.get_format_string()
1771
self.repo_dir = repo.bzrdir
1772
pb.update(gettext('Moving repository to repository.backup'))
1773
self.repo_dir.transport.move('repository', 'repository.backup')
1774
backup_transport = self.repo_dir.transport.clone('repository.backup')
1775
repo._format.check_conversion_target(self.target_format)
1776
self.source_repo = repo._format.open(self.repo_dir,
1778
_override_transport=backup_transport)
1779
pb.update(gettext('Creating new repository'))
1780
converted = self.target_format.initialize(self.repo_dir,
1781
self.source_repo.is_shared())
1782
converted.lock_write()
1784
pb.update(gettext('Copying content'))
1785
self.source_repo.copy_content_into(converted)
1788
pb.update(gettext('Deleting old repository content'))
1789
self.repo_dir.transport.delete_tree('repository.backup')
1790
ui.ui_factory.note(gettext('repository converted'))
1794
def _strip_NULL_ghosts(revision_graph):
1795
"""Also don't use this. more compatibility code for unmigrated clients."""
1796
# Filter ghosts, and null:
1797
if _mod_revision.NULL_REVISION in revision_graph:
1798
del revision_graph[_mod_revision.NULL_REVISION]
1799
for key, parents in revision_graph.items():
1800
revision_graph[key] = tuple(parent for parent in parents if parent
1802
return revision_graph
1805
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
1806
stop_revision=None):
1807
"""Extend the partial history to include a given index
1809
If a stop_index is supplied, stop when that index has been reached.
1810
If a stop_revision is supplied, stop when that revision is
1811
encountered. Otherwise, stop when the beginning of history is
1814
:param stop_index: The index which should be present. When it is
1815
present, history extension will stop.
1816
:param stop_revision: The revision id which should be present. When
1817
it is encountered, history extension will stop.
1819
start_revision = partial_history_cache[-1]
1820
graph = repo.get_graph()
1821
iterator = graph.iter_lefthand_ancestry(start_revision,
1822
(_mod_revision.NULL_REVISION,))
1824
# skip the last revision in the list
1827
if (stop_index is not None and
1828
len(partial_history_cache) > stop_index):
1830
if partial_history_cache[-1] == stop_revision:
1832
revision_id = iterator.next()
1833
partial_history_cache.append(revision_id)
1834
except StopIteration:
1839
class _LazyListJoin(object):
1840
"""An iterable yielding the contents of many lists as one list.
1842
Each iterator made from this will reflect the current contents of the lists
1843
at the time the iterator is made.
1845
This is used by Repository's _make_parents_provider implementation so that
1848
pp = repo._make_parents_provider() # uses a list of fallback repos
1849
pp.add_fallback_repository(other_repo) # appends to that list
1850
result = pp.get_parent_map(...)
1851
# The result will include revs from other_repo
1854
def __init__(self, *list_parts):
1855
self.list_parts = list_parts
1859
for list_part in self.list_parts:
1860
full_list.extend(list_part)
1861
return iter(full_list)
1864
return "%s.%s(%s)" % (self.__module__, self.__class__.__name__,
added
removed
bzrlib/repository.py
