188
142
possible_transports)
189
143
return control.open_branch(), relpath
191
def _push_should_merge_tags(self):
192
"""Should _basic_push merge this branch's tags into the target?
194
The default implementation returns False if this branch has no tags,
195
and True the rest of the time. Subclasses may override this.
197
return self.supports_tags() and self.tags.get_tag_dict()
199
145
def get_config(self):
200
146
return BranchConfig(self)
202
def _get_config(self):
203
"""Get the concrete config for just the config in this branch.
205
This is not intended for client use; see Branch.get_config for the
210
:return: An object supporting get_option and set_option.
212
raise NotImplementedError(self._get_config)
214
def _get_fallback_repository(self, url):
215
"""Get the repository we fallback to at url."""
216
url = urlutils.join(self.base, url)
217
a_branch = Branch.open(url,
218
possible_transports=[self.bzrdir.root_transport])
219
return a_branch.repository
221
def _get_tags_bytes(self):
222
"""Get the bytes of a serialised tags dict.
224
Note that not all branches support tags, nor do all use the same tags
225
logic: this method is specific to BasicTags. Other tag implementations
226
may use the same method name and behave differently, safely, because
227
of the double-dispatch via
228
format.make_tags->tags_instance->get_tags_dict.
230
:return: The bytes of the tags file.
231
:seealso: Branch._set_tags_bytes.
233
return self._transport.get_bytes('tags')
235
def _get_nick(self, local=False, possible_transports=None):
236
config = self.get_config()
237
# explicit overrides master, but don't look for master if local is True
238
if not local and not config.has_explicit_nickname():
240
master = self.get_master_branch(possible_transports)
241
if master is not None:
242
# return the master branch value
244
except errors.BzrError, e:
245
# Silently fall back to local implicit nick if the master is
247
mutter("Could not connect to bound branch, "
248
"falling back to local nick.\n " + str(e))
249
return config.get_nickname()
149
return self.get_config().get_nickname()
251
151
def _set_nick(self, nick):
252
152
self.get_config().set_user_option('nickname', nick, warn_masked=True)
311
173
raise NotImplementedError(self.get_physical_lock_status)
314
def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
315
"""Return the revision_id for a dotted revno.
317
:param revno: a tuple like (1,) or (1,1,2)
318
:param _cache_reverse: a private parameter enabling storage
319
of the reverse mapping in a top level cache. (This should
320
only be done in selective circumstances as we want to
321
avoid having the mapping cached multiple times.)
322
:return: the revision_id
323
:raises errors.NoSuchRevision: if the revno doesn't exist
325
rev_id = self._do_dotted_revno_to_revision_id(revno)
327
self._partial_revision_id_to_revno_cache[rev_id] = revno
330
def _do_dotted_revno_to_revision_id(self, revno):
331
"""Worker function for dotted_revno_to_revision_id.
333
Subclasses should override this if they wish to
334
provide a more efficient implementation.
337
return self.get_rev_id(revno[0])
338
revision_id_to_revno = self.get_revision_id_to_revno_map()
339
revision_ids = [revision_id for revision_id, this_revno
340
in revision_id_to_revno.iteritems()
341
if revno == this_revno]
342
if len(revision_ids) == 1:
343
return revision_ids[0]
345
revno_str = '.'.join(map(str, revno))
346
raise errors.NoSuchRevision(self, revno_str)
349
def revision_id_to_dotted_revno(self, revision_id):
350
"""Given a revision id, return its dotted revno.
352
:return: a tuple like (1,) or (400,1,3).
354
return self._do_revision_id_to_dotted_revno(revision_id)
356
def _do_revision_id_to_dotted_revno(self, revision_id):
357
"""Worker function for revision_id_to_revno."""
358
# Try the caches if they are loaded
359
result = self._partial_revision_id_to_revno_cache.get(revision_id)
360
if result is not None:
362
if self._revision_id_to_revno_cache:
363
result = self._revision_id_to_revno_cache.get(revision_id)
365
raise errors.NoSuchRevision(self, revision_id)
366
# Try the mainline as it's optimised
368
revno = self.revision_id_to_revno(revision_id)
370
except errors.NoSuchRevision:
371
# We need to load and use the full revno map after all
372
result = self.get_revision_id_to_revno_map().get(revision_id)
374
raise errors.NoSuchRevision(self, revision_id)
378
176
def get_revision_id_to_revno_map(self):
379
177
"""Return the revision_id => dotted revno map.
405
203
:return: A dictionary mapping revision_id => dotted revno.
205
last_revision = self.last_revision()
206
revision_graph = repository._old_get_graph(self.repository,
208
merge_sorted_revisions = tsort.merge_sort(
407
213
revision_id_to_revno = dict((rev_id, revno)
408
for rev_id, depth, revno, end_of_merge
409
in self.iter_merge_sorted_revisions())
214
for seq_num, rev_id, depth, revno, end_of_merge
215
in merge_sorted_revisions)
410
216
return revision_id_to_revno
413
def iter_merge_sorted_revisions(self, start_revision_id=None,
414
stop_revision_id=None, stop_rule='exclude', direction='reverse'):
415
"""Walk the revisions for a branch in merge sorted order.
417
Merge sorted order is the output from a merge-aware,
418
topological sort, i.e. all parents come before their
419
children going forward; the opposite for reverse.
421
:param start_revision_id: the revision_id to begin walking from.
422
If None, the branch tip is used.
423
:param stop_revision_id: the revision_id to terminate the walk
424
after. If None, the rest of history is included.
425
:param stop_rule: if stop_revision_id is not None, the precise rule
426
to use for termination:
427
* 'exclude' - leave the stop revision out of the result (default)
428
* 'include' - the stop revision is the last item in the result
429
* 'with-merges' - include the stop revision and all of its
430
merged revisions in the result
431
* 'with-merges-without-common-ancestry' - filter out revisions
432
that are in both ancestries
433
:param direction: either 'reverse' or 'forward':
434
* reverse means return the start_revision_id first, i.e.
435
start at the most recent revision and go backwards in history
436
* forward returns tuples in the opposite order to reverse.
437
Note in particular that forward does *not* do any intelligent
438
ordering w.r.t. depth as some clients of this API may like.
439
(If required, that ought to be done at higher layers.)
441
:return: an iterator over (revision_id, depth, revno, end_of_merge)
444
* revision_id: the unique id of the revision
445
* depth: How many levels of merging deep this node has been
447
* revno_sequence: This field provides a sequence of
448
revision numbers for all revisions. The format is:
449
(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
450
branch that the revno is on. From left to right the REVNO numbers
451
are the sequence numbers within that branch of the revision.
452
* end_of_merge: When True the next node (earlier in history) is
453
part of a different merge.
455
# Note: depth and revno values are in the context of the branch so
456
# we need the full graph to get stable numbers, regardless of the
458
if self._merge_sorted_revisions_cache is None:
459
last_revision = self.last_revision()
460
known_graph = self.repository.get_known_graph_ancestry(
462
self._merge_sorted_revisions_cache = known_graph.merge_sort(
464
filtered = self._filter_merge_sorted_revisions(
465
self._merge_sorted_revisions_cache, start_revision_id,
466
stop_revision_id, stop_rule)
467
# Make sure we don't return revisions that are not part of the
468
# start_revision_id ancestry.
469
filtered = self._filter_start_non_ancestors(filtered)
470
if direction == 'reverse':
472
if direction == 'forward':
473
return reversed(list(filtered))
475
raise ValueError('invalid direction %r' % direction)
477
def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
478
start_revision_id, stop_revision_id, stop_rule):
479
"""Iterate over an inclusive range of sorted revisions."""
480
rev_iter = iter(merge_sorted_revisions)
481
if start_revision_id is not None:
482
for node in rev_iter:
483
rev_id = node.key[-1]
484
if rev_id != start_revision_id:
487
# The decision to include the start or not
488
# depends on the stop_rule if a stop is provided
489
# so pop this node back into the iterator
490
rev_iter = chain(iter([node]), rev_iter)
492
if stop_revision_id is None:
494
for node in rev_iter:
495
rev_id = node.key[-1]
496
yield (rev_id, node.merge_depth, node.revno,
498
elif stop_rule == 'exclude':
499
for node in rev_iter:
500
rev_id = node.key[-1]
501
if rev_id == stop_revision_id:
503
yield (rev_id, node.merge_depth, node.revno,
505
elif stop_rule == 'include':
506
for node in rev_iter:
507
rev_id = node.key[-1]
508
yield (rev_id, node.merge_depth, node.revno,
510
if rev_id == stop_revision_id:
512
elif stop_rule == 'with-merges-without-common-ancestry':
513
# We want to exclude all revisions that are already part of the
514
# stop_revision_id ancestry.
515
graph = self.repository.get_graph()
516
ancestors = graph.find_unique_ancestors(start_revision_id,
518
for node in rev_iter:
519
rev_id = node.key[-1]
520
if rev_id not in ancestors:
522
yield (rev_id, node.merge_depth, node.revno,
524
elif stop_rule == 'with-merges':
525
stop_rev = self.repository.get_revision(stop_revision_id)
526
if stop_rev.parent_ids:
527
left_parent = stop_rev.parent_ids[0]
529
left_parent = _mod_revision.NULL_REVISION
530
# left_parent is the actual revision we want to stop logging at,
531
# since we want to show the merged revisions after the stop_rev too
532
reached_stop_revision_id = False
533
revision_id_whitelist = []
534
for node in rev_iter:
535
rev_id = node.key[-1]
536
if rev_id == left_parent:
537
# reached the left parent after the stop_revision
539
if (not reached_stop_revision_id or
540
rev_id in revision_id_whitelist):
541
yield (rev_id, node.merge_depth, node.revno,
543
if reached_stop_revision_id or rev_id == stop_revision_id:
544
# only do the merged revs of rev_id from now on
545
rev = self.repository.get_revision(rev_id)
547
reached_stop_revision_id = True
548
revision_id_whitelist.extend(rev.parent_ids)
550
raise ValueError('invalid stop_rule %r' % stop_rule)
552
def _filter_start_non_ancestors(self, rev_iter):
553
# If we started from a dotted revno, we want to consider it as a tip
554
# and don't want to yield revisions that are not part of its
555
# ancestry. Given the order guaranteed by the merge sort, we will see
556
# uninteresting descendants of the first parent of our tip before the
558
first = rev_iter.next()
559
(rev_id, merge_depth, revno, end_of_merge) = first
562
# We start at a mainline revision so by definition, all others
563
# revisions in rev_iter are ancestors
564
for node in rev_iter:
569
pmap = self.repository.get_parent_map([rev_id])
570
parents = pmap.get(rev_id, [])
572
whitelist.update(parents)
574
# If there is no parents, there is nothing of interest left
576
# FIXME: It's hard to test this scenario here as this code is never
577
# called in that case. -- vila 20100322
580
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
582
if rev_id in whitelist:
583
pmap = self.repository.get_parent_map([rev_id])
584
parents = pmap.get(rev_id, [])
585
whitelist.remove(rev_id)
586
whitelist.update(parents)
588
# We've reached the mainline, there is nothing left to
592
# A revision that is not part of the ancestry of our
595
yield (rev_id, merge_depth, revno, end_of_merge)
597
218
def leave_lock_in_place(self):
598
219
"""Tell this branch object not to release the physical lock when this
599
220
object is unlocked.
601
222
If lock_write doesn't return a token, then this method is not supported.
603
224
self.control_files.leave_in_place()
757
348
:raises UnstackableRepositoryFormat: If the repository does not support
760
if not self._format.supports_stacking():
761
raise errors.UnstackableBranchFormat(self._format, self.user_url)
762
# XXX: Changing from one fallback repository to another does not check
763
# that all the data you need is present in the new fallback.
764
# Possibly it should.
765
self._check_stackable_repo()
768
old_url = self.get_stacked_on_url()
769
except (errors.NotStacked, errors.UnstackableBranchFormat,
770
errors.UnstackableRepositoryFormat):
774
self._activate_fallback_location(url)
775
# write this out after the repository is stacked to avoid setting a
776
# stacked config that doesn't work.
777
self._set_config_location('stacked_on_location', url)
780
"""Change a branch to be unstacked, copying data as needed.
782
Don't call this directly, use set_stacked_on_url(None).
784
pb = ui.ui_factory.nested_progress_bar()
786
pb.update("Unstacking")
787
# The basic approach here is to fetch the tip of the branch,
788
# including all available ghosts, from the existing stacked
789
# repository into a new repository object without the fallbacks.
791
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
792
# correct for CHKMap repostiories
793
old_repository = self.repository
794
if len(old_repository._fallback_repositories) != 1:
795
raise AssertionError("can't cope with fallback repositories "
796
"of %r" % (self.repository,))
797
# unlock it, including unlocking the fallback
798
old_repository.unlock()
799
old_repository.lock_read()
801
# Repositories don't offer an interface to remove fallback
802
# repositories today; take the conceptually simpler option and just
803
# reopen it. We reopen it starting from the URL so that we
804
# get a separate connection for RemoteRepositories and can
805
# stream from one of them to the other. This does mean doing
806
# separate SSH connection setup, but unstacking is not a
807
# common operation so it's tolerable.
808
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
809
new_repository = new_bzrdir.find_repository()
810
self.repository = new_repository
811
if self.repository._fallback_repositories:
812
raise AssertionError("didn't expect %r to have "
813
"fallback_repositories"
814
% (self.repository,))
815
# this is not paired with an unlock because it's just restoring
816
# the previous state; the lock's released when set_stacked_on_url
818
self.repository.lock_write()
819
# XXX: If you unstack a branch while it has a working tree
820
# with a pending merge, the pending-merged revisions will no
821
# longer be present. You can (probably) revert and remerge.
823
# XXX: This only fetches up to the tip of the repository; it
824
# doesn't bring across any tags. That's fairly consistent
825
# with how branch works, but perhaps not ideal.
826
self.repository.fetch(old_repository,
827
revision_id=self.last_revision(),
830
old_repository.unlock()
834
def _set_tags_bytes(self, bytes):
835
"""Mirror method for _get_tags_bytes.
837
:seealso: Branch._get_tags_bytes.
839
return _run_with_write_locked_target(self, self._transport.put_bytes,
351
raise NotImplementedError(self.set_stacked_on_url)
842
353
def _cache_revision_history(self, rev_history):
843
354
"""Set the cached revision history to rev_history.
975
487
information. This can be None.
978
return InterBranch.get(other, self).update_revisions(stop_revision,
981
def import_last_revision_info(self, source_repo, revno, revid):
982
"""Set the last revision info, importing from another repo if necessary.
984
This is used by the bound branch code to upload a revision to
985
the master branch first before updating the tip of the local branch.
987
:param source_repo: Source repository to optionally fetch from
988
:param revno: Revision number of the new tip
989
:param revid: Revision id of the new tip
991
if not self.repository.has_same_location(source_repo):
992
self.repository.fetch(source_repo, revision_id=revid)
993
self.set_last_revision_info(revno, revid)
492
other_revno, other_last_revision = other.last_revision_info()
493
stop_revno = None # unknown
494
if stop_revision is None:
495
stop_revision = other_last_revision
496
if _mod_revision.is_null(stop_revision):
497
# if there are no commits, we're done.
499
stop_revno = other_revno
501
# what's the current last revision, before we fetch [and change it
503
last_rev = _mod_revision.ensure_null(self.last_revision())
504
# we fetch here so that we don't process data twice in the common
505
# case of having something to pull, and so that the check for
506
# already merged can operate on the just fetched graph, which will
507
# be cached in memory.
508
self.fetch(other, stop_revision)
509
# Check to see if one is an ancestor of the other
512
graph = self.repository.get_graph()
513
if self._check_if_descendant_or_diverged(
514
stop_revision, last_rev, graph, other):
515
# stop_revision is a descendant of last_rev, but we aren't
516
# overwriting, so we're done.
518
if stop_revno is None:
520
graph = self.repository.get_graph()
521
this_revno, this_last_revision = self.last_revision_info()
522
stop_revno = graph.find_distance_to_null(stop_revision,
523
[(other_last_revision, other_revno),
524
(this_last_revision, this_revno)])
525
self.set_last_revision_info(stop_revno, stop_revision)
995
529
def revision_id_to_revno(self, revision_id):
996
530
"""Given a revision id, return its revno"""
1002
536
except ValueError:
1003
537
raise errors.NoSuchRevision(self, revision_id)
1006
539
def get_rev_id(self, revno, history=None):
1007
540
"""Find the revision id of the specified revno."""
1009
542
return _mod_revision.NULL_REVISION
1010
last_revno, last_revid = self.last_revision_info()
1011
if revno == last_revno:
1013
if revno <= 0 or revno > last_revno:
544
history = self.revision_history()
545
if revno <= 0 or revno > len(history):
1014
546
raise errors.NoSuchRevision(self, revno)
1015
distance_from_last = last_revno - revno
1016
if len(self._partial_revision_history_cache) <= distance_from_last:
1017
self._extend_partial_history(distance_from_last)
1018
return self._partial_revision_history_cache[distance_from_last]
547
return history[revno - 1]
1021
549
def pull(self, source, overwrite=False, stop_revision=None,
1022
possible_transports=None, *args, **kwargs):
550
possible_transports=None, _override_hook_target=None):
1023
551
"""Mirror source into this branch.
1025
553
This branch is considered to be 'local', having low latency.
1027
555
:returns: PullResult instance
1029
return InterBranch.get(source, self).pull(overwrite=overwrite,
1030
stop_revision=stop_revision,
1031
possible_transports=possible_transports, *args, **kwargs)
557
raise NotImplementedError(self.pull)
1033
def push(self, target, overwrite=False, stop_revision=None, *args,
559
def push(self, target, overwrite=False, stop_revision=None):
1035
560
"""Mirror this branch into target.
1037
562
This branch is considered to be 'local', having low latency.
1039
return InterBranch.get(self, target).push(overwrite, stop_revision,
1042
def lossy_push(self, target, stop_revision=None):
1043
"""Push deltas into another branch.
1045
:note: This does not, like push, retain the revision ids from
1046
the source branch and will, rather than adding bzr-specific
1047
metadata, push only those semantics of the revision that can be
1048
natively represented by this branch' VCS.
1050
:param target: Target branch
1051
:param stop_revision: Revision to push, defaults to last revision.
1052
:return: BranchPushResult with an extra member revidmap:
1053
A dictionary mapping revision ids from the target branch
1054
to new revision ids in the target branch, for each
1055
revision that was pushed.
1057
inter = InterBranch.get(self, target)
1058
lossy_push = getattr(inter, "lossy_push", None)
1059
if lossy_push is None:
1060
raise errors.LossyPushToSameVCS(self, target)
1061
return lossy_push(stop_revision)
564
raise NotImplementedError(self.push)
1063
566
def basis_tree(self):
1064
567
"""Return `Tree` object for last revision."""
1199
666
raise errors.InvalidRevisionNumber(revno)
1201
668
@needs_read_lock
1202
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
669
def clone(self, to_bzrdir, revision_id=None):
1203
670
"""Clone this branch into to_bzrdir preserving all semantic values.
1205
Most API users will want 'create_clone_on_transport', which creates a
1206
new bzrdir and branch on the fly.
1208
672
revision_id: if not None, the revision history in the new branch will
1209
673
be truncated to end with revision_id.
1211
result = to_bzrdir.create_branch()
1214
if repository_policy is not None:
1215
repository_policy.configure_branch(result)
1216
self.copy_content_into(result, revision_id=revision_id)
675
result = self._format.initialize(to_bzrdir)
676
self.copy_content_into(result, revision_id=revision_id)
1221
679
@needs_read_lock
1222
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
680
def sprout(self, to_bzrdir, revision_id=None):
1223
681
"""Create a new line of development from the branch, into to_bzrdir.
1225
to_bzrdir controls the branch format.
1227
683
revision_id: if not None, the revision history in the new branch will
1228
684
be truncated to end with revision_id.
1230
if (repository_policy is not None and
1231
repository_policy.requires_stacking()):
1232
to_bzrdir._format.require_stacking(_skip_repo=True)
1233
result = to_bzrdir.create_branch()
1236
if repository_policy is not None:
1237
repository_policy.configure_branch(result)
1238
self.copy_content_into(result, revision_id=revision_id)
1239
result.set_parent(self.bzrdir.root_transport.base)
686
result = self._format.initialize(to_bzrdir)
687
self.copy_content_into(result, revision_id=revision_id)
688
result.set_parent(self.bzrdir.root_transport.base)
1244
691
def _synchronize_history(self, destination, revision_id):
1245
692
"""Synchronize last revision and revision history between branches.
1247
694
This version is most efficient when the destination is also a
1248
BzrBranch6, but works for BzrBranch5, as long as the destination's
1249
repository contains all the lefthand ancestors of the intended
1250
last_revision. If not, set_last_revision_info will fail.
695
BzrBranch5, but works for BzrBranch6 as long as the revision
696
history is the true lefthand parent history, and all of the revisions
697
are in the destination's repository. If not, set_revision_history
1252
700
:param destination: The branch to copy the history into
1253
701
:param revision_id: The revision-id to truncate history at. May
1254
702
be None to copy complete history.
1256
source_revno, source_revision_id = self.last_revision_info()
1257
if revision_id is None:
1258
revno, revision_id = source_revno, source_revision_id
1260
graph = self.repository.get_graph()
704
if revision_id == _mod_revision.NULL_REVISION:
706
new_history = self.revision_history()
707
if revision_id is not None and new_history != []:
1262
revno = graph.find_distance_to_null(revision_id,
1263
[(source_revision_id, source_revno)])
1264
except errors.GhostRevisionsHaveNoRevno:
1265
# Default to 1, if we can't find anything else
1267
destination.set_last_revision_info(revno, revision_id)
709
new_history = new_history[:new_history.index(revision_id) + 1]
711
rev = self.repository.get_revision(revision_id)
712
new_history = rev.get_history(self.repository)[1:]
713
destination.set_revision_history(new_history)
1269
715
@needs_read_lock
1270
716
def copy_content_into(self, destination, revision_id=None):
1284
729
destination.set_parent(parent)
1285
if self._push_should_merge_tags():
1286
self.tags.merge_to(destination.tags)
1288
def update_references(self, target):
1289
if not getattr(self._format, 'supports_reference_locations', False):
1291
reference_dict = self._get_all_reference_info()
1292
if len(reference_dict) == 0:
1294
old_base = self.base
1295
new_base = target.base
1296
target_reference_dict = target._get_all_reference_info()
1297
for file_id, (tree_path, branch_location) in (
1298
reference_dict.items()):
1299
branch_location = urlutils.rebase_url(branch_location,
1301
target_reference_dict.setdefault(
1302
file_id, (tree_path, branch_location))
1303
target._set_all_reference_info(target_reference_dict)
730
self.tags.merge_to(destination.tags)
1305
732
@needs_read_lock
1306
def check(self, refs):
1307
734
"""Check consistency of the branch.
1309
736
In particular this checks that revisions given in the revision-history
1310
do actually match up in the revision graph, and that they're all
737
do actually match up in the revision graph, and that they're all
1311
738
present in the repository.
1313
740
Callers will typically also want to check the repository.
1315
:param refs: Calculated refs for this branch as specified by
1316
branch._get_check_refs()
1317
742
:return: A BranchCheckResult.
1319
result = BranchCheckResult(self)
744
mainline_parent_id = None
1320
745
last_revno, last_revision_id = self.last_revision_info()
1321
actual_revno = refs[('lefthand-distance', last_revision_id)]
1322
if actual_revno != last_revno:
1323
result.errors.append(errors.BzrCheckError(
1324
'revno does not match len(mainline) %s != %s' % (
1325
last_revno, actual_revno)))
1326
# TODO: We should probably also check that self.revision_history
1327
# matches the repository for older branch formats.
1328
# If looking for the code that cross-checks repository parents against
1329
# the iter_reverse_revision_history output, that is now a repository
746
real_rev_history = list(self.repository.iter_reverse_revision_history(
748
real_rev_history.reverse()
749
if len(real_rev_history) != last_revno:
750
raise errors.BzrCheckError('revno does not match len(mainline)'
751
' %s != %s' % (last_revno, len(real_rev_history)))
752
# TODO: We should probably also check that real_rev_history actually
753
# matches self.revision_history()
754
for revision_id in real_rev_history:
756
revision = self.repository.get_revision(revision_id)
757
except errors.NoSuchRevision, e:
758
raise errors.BzrCheckError("mainline revision {%s} not in repository"
760
# In general the first entry on the revision history has no parents.
761
# But it's not illegal for it to have parents listed; this can happen
762
# in imports from Arch when the parents weren't reachable.
763
if mainline_parent_id is not None:
764
if mainline_parent_id not in revision.parent_ids:
765
raise errors.BzrCheckError("previous revision {%s} not listed among "
767
% (mainline_parent_id, revision_id))
768
mainline_parent_id = revision_id
769
return BranchCheckResult(self)
1333
771
def _get_checkout_format(self):
1334
772
"""Return the most suitable metadir for a checkout of this branch.
1612
997
filename, content,
1613
998
mode=a_bzrdir._get_file_mode())
1616
control_files.unlock()
1617
branch = self.open(a_bzrdir, name, _found=True)
1618
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1000
control_files.unlock()
1001
return self.open(a_bzrdir, _found=True)
1621
def initialize(self, a_bzrdir, name=None):
1622
"""Create a branch of this format in a_bzrdir.
1624
:param name: Name of the colocated branch to create.
1003
def initialize(self, a_bzrdir):
1004
"""Create a branch of this format in a_bzrdir."""
1626
1005
raise NotImplementedError(self.initialize)
1628
1007
def is_supported(self):
1629
1008
"""Is this format supported?
1631
1010
Supported formats can be initialized and opened.
1632
Unsupported formats may not support initialization or committing or
1011
Unsupported formats may not support initialization or committing or
1633
1012
some other features depending on the reason for not being supported.
1637
def make_tags(self, branch):
1638
"""Create a tags object for branch.
1640
This method is on BranchFormat, because BranchFormats are reflected
1641
over the wire via network_name(), whereas full Branch instances require
1642
multiple VFS method calls to operate at all.
1644
The default implementation returns a disabled-tags instance.
1646
Note that it is normal for branch to be a RemoteBranch when using tags
1649
return DisabledTags(branch)
1651
def network_name(self):
1652
"""A simple byte string uniquely identifying this format for RPC calls.
1654
MetaDir branch formats use their disk format string to identify the
1655
repository over the wire. All in one formats such as bzr < 0.8, and
1656
foreign formats like svn/git and hg should use some marker which is
1657
unique and immutable.
1659
raise NotImplementedError(self.network_name)
1661
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1016
def open(self, a_bzrdir, _found=False):
1662
1017
"""Return the branch object for a_bzrdir
1664
:param a_bzrdir: A BzrDir that contains a branch.
1665
:param name: Name of colocated branch to open
1666
:param _found: a private parameter, do not use it. It is used to
1667
indicate if format probing has already be done.
1668
:param ignore_fallbacks: when set, no fallback branches will be opened
1669
(if there are any). Default is to open fallbacks.
1019
_found is a private parameter, do not use it. It is used to indicate
1020
if format probing has already be done.
1671
1022
raise NotImplementedError(self.open)
1674
1025
def register_format(klass, format):
1675
"""Register a metadir format."""
1676
1026
klass._formats[format.get_format_string()] = format
1677
# Metadir formats have a network name of their format string, and get
1678
# registered as class factories.
1679
network_format_registry.register(format.get_format_string(), format.__class__)
1682
1029
def set_default_format(klass, format):
1683
1030
klass._default_format = format
1685
def supports_set_append_revisions_only(self):
1686
"""True if this format supports set_append_revisions_only."""
1689
1032
def supports_stacking(self):
1690
1033
"""True if this format records a stacked-on branch."""
1718
1061
Hooks.__init__(self)
1719
self.create_hook(HookPoint('set_rh',
1720
"Invoked whenever the revision history has been set via "
1721
"set_revision_history. The api signature is (branch, "
1722
"revision_history), and the branch will be write-locked. "
1723
"The set_rh hook can be expensive for bzr to trigger, a better "
1724
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1725
self.create_hook(HookPoint('open',
1726
"Called with the Branch object that has been opened after a "
1727
"branch is opened.", (1, 8), None))
1728
self.create_hook(HookPoint('post_push',
1729
"Called after a push operation completes. post_push is called "
1730
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1731
"bzr client.", (0, 15), None))
1732
self.create_hook(HookPoint('post_pull',
1733
"Called after a pull operation completes. post_pull is called "
1734
"with a bzrlib.branch.PullResult object and only runs in the "
1735
"bzr client.", (0, 15), None))
1736
self.create_hook(HookPoint('pre_commit',
1737
"Called after a commit is calculated but before it is is "
1738
"completed. pre_commit is called with (local, master, old_revno, "
1739
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1740
"). old_revid is NULL_REVISION for the first commit to a branch, "
1741
"tree_delta is a TreeDelta object describing changes from the "
1742
"basis revision. hooks MUST NOT modify this delta. "
1743
" future_tree is an in-memory tree obtained from "
1744
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1745
"tree.", (0,91), None))
1746
self.create_hook(HookPoint('post_commit',
1747
"Called in the bzr client after a commit has completed. "
1748
"post_commit is called with (local, master, old_revno, old_revid, "
1749
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1750
"commit to a branch.", (0, 15), None))
1751
self.create_hook(HookPoint('post_uncommit',
1752
"Called in the bzr client after an uncommit completes. "
1753
"post_uncommit is called with (local, master, old_revno, "
1754
"old_revid, new_revno, new_revid) where local is the local branch "
1755
"or None, master is the target branch, and an empty branch "
1756
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1757
self.create_hook(HookPoint('pre_change_branch_tip',
1758
"Called in bzr client and server before a change to the tip of a "
1759
"branch is made. pre_change_branch_tip is called with a "
1760
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1761
"commit, uncommit will all trigger this hook.", (1, 6), None))
1762
self.create_hook(HookPoint('post_change_branch_tip',
1763
"Called in bzr client and server after a change to the tip of a "
1764
"branch is made. post_change_branch_tip is called with a "
1765
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1766
"commit, uncommit will all trigger this hook.", (1, 4), None))
1767
self.create_hook(HookPoint('transform_fallback_location',
1768
"Called when a stacked branch is activating its fallback "
1769
"locations. transform_fallback_location is called with (branch, "
1770
"url), and should return a new url. Returning the same url "
1771
"allows it to be used as-is, returning a different one can be "
1772
"used to cause the branch to stack on a closer copy of that "
1773
"fallback_location. Note that the branch cannot have history "
1774
"accessing methods called on it during this hook because the "
1775
"fallback locations have not been activated. When there are "
1776
"multiple hooks installed for transform_fallback_location, "
1777
"all are called with the url returned from the previous hook."
1778
"The order is however undefined.", (1, 9), None))
1779
self.create_hook(HookPoint('automatic_tag_name',
1780
"Called to determine an automatic tag name for a revision."
1781
"automatic_tag_name is called with (branch, revision_id) and "
1782
"should return a tag name or None if no tag name could be "
1783
"determined. The first non-None tag name returned will be used.",
1785
self.create_hook(HookPoint('post_branch_init',
1786
"Called after new branch initialization completes. "
1787
"post_branch_init is called with a "
1788
"bzrlib.branch.BranchInitHookParams. "
1789
"Note that init, branch and checkout (both heavyweight and "
1790
"lightweight) will all trigger this hook.", (2, 2), None))
1791
self.create_hook(HookPoint('post_switch',
1792
"Called after a checkout switches branch. "
1793
"post_switch is called with a "
1794
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1062
# Introduced in 0.15:
1063
# invoked whenever the revision history has been set
1064
# with set_revision_history. The api signature is
1065
# (branch, revision_history), and the branch will
1068
# invoked after a push operation completes.
1069
# the api signature is
1071
# containing the members
1072
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1073
# where local is the local target branch or None, master is the target
1074
# master branch, and the rest should be self explanatory. The source
1075
# is read locked and the target branches write locked. Source will
1076
# be the local low-latency branch.
1077
self['post_push'] = []
1078
# invoked after a pull operation completes.
1079
# the api signature is
1081
# containing the members
1082
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1083
# where local is the local branch or None, master is the target
1084
# master branch, and the rest should be self explanatory. The source
1085
# is read locked and the target branches write locked. The local
1086
# branch is the low-latency branch.
1087
self['post_pull'] = []
1088
# invoked before a commit operation takes place.
1089
# the api signature is
1090
# (local, master, old_revno, old_revid, future_revno, future_revid,
1091
# tree_delta, future_tree).
1092
# old_revid is NULL_REVISION for the first commit to a branch
1093
# tree_delta is a TreeDelta object describing changes from the basis
1094
# revision, hooks MUST NOT modify this delta
1095
# future_tree is an in-memory tree obtained from
1096
# CommitBuilder.revision_tree() and hooks MUST NOT modify this tree
1097
self['pre_commit'] = []
1098
# invoked after a commit operation completes.
1099
# the api signature is
1100
# (local, master, old_revno, old_revid, new_revno, new_revid)
1101
# old_revid is NULL_REVISION for the first commit to a branch.
1102
self['post_commit'] = []
1103
# invoked after a uncommit operation completes.
1104
# the api signature is
1105
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1106
# local is the local branch or None, master is the target branch,
1107
# and an empty branch recieves new_revno of 0, new_revid of None.
1108
self['post_uncommit'] = []
1110
# Invoked before the tip of a branch changes.
1111
# the api signature is
1112
# (params) where params is a ChangeBranchTipParams with the members
1113
# (branch, old_revno, new_revno, old_revid, new_revid)
1114
self['pre_change_branch_tip'] = []
1116
# Invoked after the tip of a branch changes.
1117
# the api signature is
1118
# (params) where params is a ChangeBranchTipParams with the members
1119
# (branch, old_revno, new_revno, old_revid, new_revid)
1120
self['post_change_branch_tip'] = []
1798
1123
# install the default hooks into the Branch class.
1831
1156
def __eq__(self, other):
1832
1157
return self.__dict__ == other.__dict__
1834
1159
def __repr__(self):
1835
1160
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1836
self.__class__.__name__, self.branch,
1161
self.__class__.__name__, self.branch,
1837
1162
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1840
class BranchInitHookParams(object):
1841
"""Object holding parameters passed to *_branch_init hooks.
1843
There are 4 fields that hooks may wish to access:
1845
:ivar format: the branch format
1846
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1847
:ivar name: name of colocated branch, if any (or None)
1848
:ivar branch: the branch created
1850
Note that for lightweight checkouts, the bzrdir and format fields refer to
1851
the checkout, hence they are different from the corresponding fields in
1852
branch, which refer to the original branch.
1855
def __init__(self, format, a_bzrdir, name, branch):
1856
"""Create a group of BranchInitHook parameters.
1858
:param format: the branch format
1859
:param a_bzrdir: the BzrDir where the branch will be/has been
1861
:param name: name of colocated branch, if any (or None)
1862
:param branch: the branch created
1864
Note that for lightweight checkouts, the bzrdir and format fields refer
1865
to the checkout, hence they are different from the corresponding fields
1866
in branch, which refer to the original branch.
1868
self.format = format
1869
self.bzrdir = a_bzrdir
1871
self.branch = branch
1873
def __eq__(self, other):
1874
return self.__dict__ == other.__dict__
1878
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1880
return "<%s of format:%s bzrdir:%s>" % (
1881
self.__class__.__name__, self.branch,
1882
self.format, self.bzrdir)
1885
class SwitchHookParams(object):
1886
"""Object holding parameters passed to *_switch hooks.
1888
There are 4 fields that hooks may wish to access:
1890
:ivar control_dir: BzrDir of the checkout to change
1891
:ivar to_branch: branch that the checkout is to reference
1892
:ivar force: skip the check for local commits in a heavy checkout
1893
:ivar revision_id: revision ID to switch to (or None)
1896
def __init__(self, control_dir, to_branch, force, revision_id):
1897
"""Create a group of SwitchHook parameters.
1899
:param control_dir: BzrDir of the checkout to change
1900
:param to_branch: branch that the checkout is to reference
1901
:param force: skip the check for local commits in a heavy checkout
1902
:param revision_id: revision ID to switch to (or None)
1904
self.control_dir = control_dir
1905
self.to_branch = to_branch
1907
self.revision_id = revision_id
1909
def __eq__(self, other):
1910
return self.__dict__ == other.__dict__
1913
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1914
self.control_dir, self.to_branch,
1918
1165
class BzrBranchFormat4(BranchFormat):
1919
1166
"""Bzr branch format 4.
2058
1298
"""See BranchFormat.get_format_description()."""
2059
1299
return "Branch format 6"
2061
def initialize(self, a_bzrdir, name=None):
2062
"""Create a branch of this format in a_bzrdir."""
2063
utf8_files = [('last-revision', '0 null:\n'),
2064
('branch.conf', ''),
2067
return self._initialize_helper(a_bzrdir, utf8_files, name)
2069
def make_tags(self, branch):
2070
"""See bzrlib.branch.BranchFormat.make_tags()."""
2071
return BasicTags(branch)
2073
def supports_set_append_revisions_only(self):
2077
class BzrBranchFormat8(BranchFormatMetadir):
2078
"""Metadir format supporting storing locations of subtree branches."""
2080
def _branch_class(self):
2083
def get_format_string(self):
2084
"""See BranchFormat.get_format_string()."""
2085
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2087
def get_format_description(self):
2088
"""See BranchFormat.get_format_description()."""
2089
return "Branch format 8"
2091
def initialize(self, a_bzrdir, name=None):
2092
"""Create a branch of this format in a_bzrdir."""
2093
utf8_files = [('last-revision', '0 null:\n'),
2094
('branch.conf', ''),
2098
return self._initialize_helper(a_bzrdir, utf8_files, name)
2101
super(BzrBranchFormat8, self).__init__()
2102
self._matchingbzrdir.repository_format = \
2103
RepositoryFormatKnitPack5RichRoot()
2105
def make_tags(self, branch):
2106
"""See bzrlib.branch.BranchFormat.make_tags()."""
2107
return BasicTags(branch)
2109
def supports_set_append_revisions_only(self):
2112
def supports_stacking(self):
2115
supports_reference_locations = True
2118
class BzrBranchFormat7(BzrBranchFormat8):
1301
def initialize(self, a_bzrdir):
1302
"""Create a branch of this format in a_bzrdir."""
1303
utf8_files = [('last-revision', '0 null:\n'),
1304
('branch.conf', ''),
1307
return self._initialize_helper(a_bzrdir, utf8_files)
1310
class BzrBranchFormat7(BranchFormatMetadir):
2119
1311
"""Branch format with last-revision, tags, and a stacked location pointer.
2121
1313
The stacked location pointer is passed down to the repository and requires
2171
1366
def get_reference(self, a_bzrdir):
2172
1367
"""See BranchFormat.get_reference()."""
2173
1368
transport = a_bzrdir.get_branch_transport(None)
2174
return transport.get_bytes('location')
1369
return transport.get('location').read()
2176
1371
def set_reference(self, a_bzrdir, to_branch):
2177
1372
"""See BranchFormat.set_reference()."""
2178
1373
transport = a_bzrdir.get_branch_transport(None)
2179
1374
location = transport.put_bytes('location', to_branch.base)
2181
def initialize(self, a_bzrdir, name=None, target_branch=None):
1376
def initialize(self, a_bzrdir, target_branch=None):
2182
1377
"""Create a branch of this format in a_bzrdir."""
2183
1378
if target_branch is None:
2184
1379
# this format does not implement branch itself, thus the implicit
2185
1380
# creation contract must see it as uninitializable
2186
1381
raise errors.UninitializableFormat(self)
2187
mutter('creating branch reference in %s', a_bzrdir.user_url)
2188
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1382
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1383
branch_transport = a_bzrdir.get_branch_transport(self)
2189
1384
branch_transport.put_bytes('location',
2190
target_branch.bzrdir.user_url)
1385
target_branch.bzrdir.root_transport.base)
2191
1386
branch_transport.put_bytes('format', self.get_format_string())
2193
a_bzrdir, name, _found=True,
1388
a_bzrdir, _found=True,
2194
1389
possible_transports=[target_branch.bzrdir.root_transport])
2195
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
2198
1391
def __init__(self):
2199
1392
super(BranchReferenceFormat, self).__init__()
2200
1393
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2201
self._matchingbzrdir.set_branch_format(self)
2203
1395
def _make_reference_clone_function(format, a_branch):
2204
1396
"""Create a clone() routine for a branch dynamically."""
2205
def clone(to_bzrdir, revision_id=None,
2206
repository_policy=None):
1397
def clone(to_bzrdir, revision_id=None):
2207
1398
"""See Branch.clone()."""
2208
return format.initialize(to_bzrdir, target_branch=a_branch)
1399
return format.initialize(to_bzrdir, a_branch)
2209
1400
# cannot obey revision_id limits when cloning a reference ...
2210
1401
# FIXME RBC 20060210 either nuke revision_id for clone, or
2211
1402
# emit some sort of warning/error to the caller ?!
2214
def open(self, a_bzrdir, name=None, _found=False, location=None,
2215
possible_transports=None, ignore_fallbacks=False):
1405
def open(self, a_bzrdir, _found=False, location=None,
1406
possible_transports=None):
2216
1407
"""Return the branch that the branch reference in a_bzrdir points at.
2218
:param a_bzrdir: A BzrDir that contains a branch.
2219
:param name: Name of colocated branch to open, if any
2220
:param _found: a private parameter, do not use it. It is used to
2221
indicate if format probing has already be done.
2222
:param ignore_fallbacks: when set, no fallback branches will be opened
2223
(if there are any). Default is to open fallbacks.
2224
:param location: The location of the referenced branch. If
2225
unspecified, this will be determined from the branch reference in
2227
:param possible_transports: An optional reusable transports list.
1409
_found is a private parameter, do not use it. It is used to indicate
1410
if format probing has already be done.
2230
format = BranchFormat.find_format(a_bzrdir, name=name)
1413
format = BranchFormat.find_format(a_bzrdir)
2231
1414
if format.__class__ != self.__class__:
2232
1415
raise AssertionError("wrong format %r found for %r" %
2233
1416
(format, self))
2252
network_format_registry = registry.FormatRegistry()
2253
"""Registry of formats indexed by their network name.
2255
The network name for a branch format is an identifier that can be used when
2256
referring to formats with smart server operations. See
2257
BranchFormat.network_name() for more detail.
2261
1434
# formats which have no format string are not discoverable
2262
1435
# and not independently creatable, so are not registered.
2263
1436
__format5 = BzrBranchFormat5()
2264
1437
__format6 = BzrBranchFormat6()
2265
1438
__format7 = BzrBranchFormat7()
2266
__format8 = BzrBranchFormat8()
2267
1439
BranchFormat.register_format(__format5)
2268
1440
BranchFormat.register_format(BranchReferenceFormat())
2269
1441
BranchFormat.register_format(__format6)
2270
1442
BranchFormat.register_format(__format7)
2271
BranchFormat.register_format(__format8)
2272
BranchFormat.set_default_format(__format7)
1443
BranchFormat.set_default_format(__format6)
2273
1444
_legacy_formats = [BzrBranchFormat4(),
2275
network_format_registry.register(
2276
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2279
class BranchWriteLockResult(object):
2280
"""The result of write locking a branch.
2282
:ivar branch_token: The token obtained from the underlying branch lock, or
2284
:ivar unlock: A callable which will unlock the lock.
2287
def __init__(self, unlock, branch_token):
2288
self.branch_token = branch_token
2289
self.unlock = unlock
2292
class BzrBranch(Branch, _RelockDebugMixin):
1447
class BzrBranch(Branch):
2293
1448
"""A branch stored in the actual filesystem.
2295
1450
Note that it's "local" in the context of the filesystem; it doesn't
2296
1451
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2297
1452
it's writable, and can be accessed via the normal filesystem API.
2299
:ivar _transport: Transport for file operations on this branch's
1454
:ivar _transport: Transport for file operations on this branch's
2300
1455
control files, typically pointing to the .bzr/branch directory.
2301
1456
:ivar repository: Repository for this branch.
2302
:ivar base: The url of the base directory for this branch; the one
1457
:ivar base: The url of the base directory for this branch; the one
2303
1458
containing the .bzr directory.
2304
:ivar name: Optional colocated branch name as it exists in the control
2308
1461
def __init__(self, _format=None,
2309
_control_files=None, a_bzrdir=None, name=None,
2310
_repository=None, ignore_fallbacks=False):
1462
_control_files=None, a_bzrdir=None, _repository=None):
2311
1463
"""Create new branch object at a particular location."""
2312
1464
if a_bzrdir is None:
2313
1465
raise ValueError('a_bzrdir must be supplied')
2315
1467
self.bzrdir = a_bzrdir
2316
1468
self._base = self.bzrdir.transport.clone('..').base
2318
1469
# XXX: We should be able to just do
2319
1470
# self.base = self.bzrdir.root_transport.base
2320
1471
# but this does not quite work yet -- mbp 20080522
2342
1489
base = property(_get_base, doc="The URL for the root of this branch.")
2344
def _get_config(self):
2345
return TransportConfig(self._transport, 'branch.conf')
2347
1491
def is_locked(self):
2348
1492
return self.control_files.is_locked()
2350
1494
def lock_write(self, token=None):
2351
"""Lock the branch for write operations.
2353
:param token: A token to permit reacquiring a previously held and
2355
:return: A BranchWriteLockResult.
2357
if not self.is_locked():
2358
self._note_lock('w')
2359
# All-in-one needs to always unlock/lock.
2360
repo_control = getattr(self.repository, 'control_files', None)
2361
if self.control_files == repo_control or not self.is_locked():
2362
self.repository._warn_if_deprecated(self)
2363
self.repository.lock_write()
1495
repo_token = self.repository.lock_write()
2368
return BranchWriteLockResult(self.unlock,
2369
self.control_files.lock_write(token=token))
1497
token = self.control_files.lock_write(token=token)
2372
self.repository.unlock()
1499
self.repository.unlock()
2375
1503
def lock_read(self):
2376
"""Lock the branch for read operations.
2378
:return: An object with an unlock method which will release the lock
2381
if not self.is_locked():
2382
self._note_lock('r')
2383
# All-in-one needs to always unlock/lock.
2384
repo_control = getattr(self.repository, 'control_files', None)
2385
if self.control_files == repo_control or not self.is_locked():
2386
self.repository._warn_if_deprecated(self)
2387
self.repository.lock_read()
1504
self.repository.lock_read()
2392
1506
self.control_files.lock_read()
2396
self.repository.unlock()
1508
self.repository.unlock()
2399
@only_raises(errors.LockNotHeld, errors.LockBroken)
2400
1511
def unlock(self):
1512
# TODO: test for failed two phase locks. This is known broken.
2402
1514
self.control_files.unlock()
2404
# All-in-one needs to always unlock/lock.
2405
repo_control = getattr(self.repository, 'control_files', None)
2406
if (self.control_files == repo_control or
2407
not self.control_files.is_locked()):
2408
self.repository.unlock()
2409
if not self.control_files.is_locked():
2410
# we just released the lock
2411
self._clear_cached_state()
1516
self.repository.unlock()
1517
if not self.control_files.is_locked():
1518
# we just released the lock
1519
self._clear_cached_state()
2413
1521
def peek_lock_mode(self):
2414
1522
if self.control_files._lock_count == 0:
2458
1566
if Branch.hooks['post_change_branch_tip']:
2459
1567
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2461
def _synchronize_history(self, destination, revision_id):
2462
"""Synchronize last revision and revision history between branches.
2464
This version is most efficient when the destination is also a
2465
BzrBranch5, but works for BzrBranch6 as long as the revision
2466
history is the true lefthand parent history, and all of the revisions
2467
are in the destination's repository. If not, set_revision_history
2470
:param destination: The branch to copy the history into
2471
:param revision_id: The revision-id to truncate history at. May
2472
be None to copy complete history.
2474
if not isinstance(destination._format, BzrBranchFormat5):
2475
super(BzrBranch, self)._synchronize_history(
2476
destination, revision_id)
1569
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1570
"""Run the pre_change_branch_tip hooks."""
1571
hooks = Branch.hooks['pre_change_branch_tip']
2478
if revision_id == _mod_revision.NULL_REVISION:
2481
new_history = self.revision_history()
2482
if revision_id is not None and new_history != []:
1574
old_revno, old_revid = self.last_revision_info()
1575
params = ChangeBranchTipParams(
1576
self, old_revno, new_revno, old_revid, new_revid)
2484
new_history = new_history[:new_history.index(revision_id) + 1]
2486
rev = self.repository.get_revision(revision_id)
2487
new_history = rev.get_history(self.repository)[1:]
2488
destination.set_revision_history(new_history)
1580
except errors.TipChangeRejected:
1583
exc_info = sys.exc_info()
1584
hook_name = Branch.hooks.get_hook_name(hook)
1585
raise errors.HookFailed(
1586
'pre_change_branch_tip', hook_name, exc_info)
1588
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1589
"""Run the post_change_branch_tip hooks."""
1590
hooks = Branch.hooks['post_change_branch_tip']
1593
new_revno, new_revid = self.last_revision_info()
1594
params = ChangeBranchTipParams(
1595
self, old_revno, new_revno, old_revid, new_revid)
2490
1599
@needs_write_lock
2491
1600
def set_last_revision_info(self, revno, revision_id):
2492
1601
"""Set the last revision of this branch.
1725
def push(self, target, overwrite=False, stop_revision=None,
1726
_override_hook_source_branch=None):
1729
This is the basic concrete implementation of push()
1731
:param _override_hook_source_branch: If specified, run
1732
the hooks passing this Branch as the source, rather than self.
1733
This is for use of RemoteBranch, where push is delegated to the
1734
underlying vfs-based Branch.
1736
# TODO: Public option to disable running hooks - should be trivial but
1740
result = self._push_with_bound_branches(target, overwrite,
1742
_override_hook_source_branch=_override_hook_source_branch)
1747
def _push_with_bound_branches(self, target, overwrite,
1749
_override_hook_source_branch=None):
1750
"""Push from self into target, and into target's master if any.
1752
This is on the base BzrBranch class even though it doesn't support
1753
bound branches because the *target* might be bound.
1756
if _override_hook_source_branch:
1757
result.source_branch = _override_hook_source_branch
1758
for hook in Branch.hooks['post_push']:
1761
bound_location = target.get_bound_location()
1762
if bound_location and target.base != bound_location:
1763
# there is a master branch.
1765
# XXX: Why the second check? Is it even supported for a branch to
1766
# be bound to itself? -- mbp 20070507
1767
master_branch = target.get_master_branch()
1768
master_branch.lock_write()
1770
# push into the master from this branch.
1771
self._basic_push(master_branch, overwrite, stop_revision)
1772
# and push into the target branch from this. Note that we push from
1773
# this branch again, because its considered the highest bandwidth
1775
result = self._basic_push(target, overwrite, stop_revision)
1776
result.master_branch = master_branch
1777
result.local_branch = target
1781
master_branch.unlock()
1784
result = self._basic_push(target, overwrite, stop_revision)
1785
# TODO: Why set master_branch and local_branch if there's no
1786
# binding? Maybe cleaner to just leave them unset? -- mbp
1788
result.master_branch = target
1789
result.local_branch = None
2545
1793
def _basic_push(self, target, overwrite, stop_revision):
2546
1794
"""Basic implementation of push without bound branches or hooks.
2548
Must be called with source read locked and target write locked.
1796
Must be called with self read locked and target write locked.
2550
result = BranchPushResult()
1798
result = PushResult()
2551
1799
result.source_branch = self
2552
1800
result.target_branch = target
2553
1801
result.old_revno, result.old_revid = target.last_revision_info()
2554
self.update_references(target)
2555
if result.old_revid != self.last_revision():
2556
# We assume that during 'push' this repository is closer than
2558
graph = self.repository.get_graph(target.repository)
2559
target.update_revisions(self, stop_revision,
2560
overwrite=overwrite, graph=graph)
2561
if self._push_should_merge_tags():
2562
result.tag_conflicts = self.tags.merge_to(target.tags,
1803
# We assume that during 'push' this repository is closer than
1805
graph = self.repository.get_graph(target.repository)
1806
target.update_revisions(self, stop_revision, overwrite=overwrite,
1808
result.tag_conflicts = self.tags.merge_to(target.tags, overwrite)
2564
1809
result.new_revno, result.new_revid = target.last_revision_info()
1812
def get_parent(self):
1813
"""See Branch.get_parent."""
1814
parent = self._get_parent_location()
1817
# This is an old-format absolute path to a local branch
1818
# turn it into a url
1819
if parent.startswith('/'):
1820
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1822
return urlutils.join(self.base[:-1], parent)
1823
except errors.InvalidURLJoin, e:
1824
raise errors.InaccessibleParent(parent, self.base)
2567
1826
def get_stacked_on_url(self):
2568
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1827
raise errors.UnstackableBranchFormat(self._format, self.base)
2570
1829
def set_push_location(self, location):
2571
1830
"""See Branch.set_push_location."""
2682
class BzrBranch8(BzrBranch5):
2683
"""A branch that stores tree-reference locations."""
1991
class BzrBranch7(BzrBranch5):
1992
"""A branch with support for a fallback repository."""
1994
def _get_fallback_repository(self, url):
1995
"""Get the repository we fallback to at url."""
1996
url = urlutils.join(self.base, url)
1997
return bzrdir.BzrDir.open(url).open_branch().repository
1999
def _activate_fallback_location(self, url):
2000
"""Activate the branch/repository from url as a fallback repository."""
2001
self.repository.add_fallback_repository(
2002
self._get_fallback_repository(url))
2685
2004
def _open_hook(self):
2686
if self._ignore_fallbacks:
2689
2006
url = self.get_stacked_on_url()
2690
2007
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2691
2008
errors.UnstackableBranchFormat):
2694
for hook in Branch.hooks['transform_fallback_location']:
2695
url = hook(self, url)
2697
hook_name = Branch.hooks.get_hook_name(hook)
2698
raise AssertionError(
2699
"'transform_fallback_location' hook %s returned "
2700
"None, not a URL." % hook_name)
2701
2011
self._activate_fallback_location(url)
2013
def _check_stackable_repo(self):
2014
if not self.repository._format.supports_external_lookups:
2015
raise errors.UnstackableRepositoryFormat(self.repository._format,
2016
self.repository.base)
2703
2018
def __init__(self, *args, **kwargs):
2704
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2705
super(BzrBranch8, self).__init__(*args, **kwargs)
2019
super(BzrBranch7, self).__init__(*args, **kwargs)
2706
2020
self._last_revision_info_cache = None
2707
self._reference_info = None
2021
self._partial_revision_history_cache = []
2709
2023
def _clear_cached_state(self):
2710
super(BzrBranch8, self)._clear_cached_state()
2024
super(BzrBranch7, self)._clear_cached_state()
2711
2025
self._last_revision_info_cache = None
2712
self._reference_info = None
2026
self._partial_revision_history_cache = []
2714
2028
def _last_revision_info(self):
2715
2029
revision_string = self._transport.get_bytes('last-revision')
2796
2127
"""Set the parent branch"""
2797
2128
return self._get_config_location('parent_location')
2800
def _set_all_reference_info(self, info_dict):
2801
"""Replace all reference info stored in a branch.
2803
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2806
writer = rio.RioWriter(s)
2807
for key, (tree_path, branch_location) in info_dict.iteritems():
2808
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2809
branch_location=branch_location)
2810
writer.write_stanza(stanza)
2811
self._transport.put_bytes('references', s.getvalue())
2812
self._reference_info = info_dict
2815
def _get_all_reference_info(self):
2816
"""Return all the reference info stored in a branch.
2818
:return: A dict of {file_id: (tree_path, branch_location)}
2820
if self._reference_info is not None:
2821
return self._reference_info
2822
rio_file = self._transport.get('references')
2824
stanzas = rio.read_stanzas(rio_file)
2825
info_dict = dict((s['file_id'], (s['tree_path'],
2826
s['branch_location'])) for s in stanzas)
2829
self._reference_info = info_dict
2832
def set_reference_info(self, file_id, tree_path, branch_location):
2833
"""Set the branch location to use for a tree reference.
2835
:param file_id: The file-id of the tree reference.
2836
:param tree_path: The path of the tree reference in the tree.
2837
:param branch_location: The location of the branch to retrieve tree
2840
info_dict = self._get_all_reference_info()
2841
info_dict[file_id] = (tree_path, branch_location)
2842
if None in (tree_path, branch_location):
2843
if tree_path is not None:
2844
raise ValueError('tree_path must be None when branch_location'
2846
if branch_location is not None:
2847
raise ValueError('branch_location must be None when tree_path'
2849
del info_dict[file_id]
2850
self._set_all_reference_info(info_dict)
2852
def get_reference_info(self, file_id):
2853
"""Get the tree_path and branch_location for a tree reference.
2855
:return: a tuple of (tree_path, branch_location)
2857
return self._get_all_reference_info().get(file_id, (None, None))
2859
def reference_parent(self, file_id, path, possible_transports=None):
2860
"""Return the parent branch for a tree-reference file_id.
2862
:param file_id: The file_id of the tree reference
2863
:param path: The path of the file_id in the tree
2864
:return: A branch associated with the file_id
2866
branch_location = self.get_reference_info(file_id)[1]
2867
if branch_location is None:
2868
return Branch.reference_parent(self, file_id, path,
2869
possible_transports)
2870
branch_location = urlutils.join(self.user_url, branch_location)
2871
return Branch.open(branch_location,
2872
possible_transports=possible_transports)
2874
2130
def set_push_location(self, location):
2875
2131
"""See Branch.set_push_location."""
2876
2132
self._set_config_location('push_location', location)
2910
2166
return self._get_bound_location(False)
2912
2168
def get_stacked_on_url(self):
2913
# you can always ask for the URL; but you might not be able to use it
2914
# if the repo can't support stacking.
2915
## self._check_stackable_repo()
2169
self._check_stackable_repo()
2916
2170
stacked_url = self._get_config_location('stacked_on_location')
2917
2171
if stacked_url is None:
2918
2172
raise errors.NotStacked(self)
2919
2173
return stacked_url
2175
def set_append_revisions_only(self, enabled):
2180
self.get_config().set_user_option('append_revisions_only', value,
2183
def set_stacked_on_url(self, url):
2184
self._check_stackable_repo()
2187
old_url = self.get_stacked_on_url()
2188
except (errors.NotStacked, errors.UnstackableBranchFormat,
2189
errors.UnstackableRepositoryFormat):
2192
# repositories don't offer an interface to remove fallback
2193
# repositories today; take the conceptually simpler option and just
2195
self.repository = self.bzrdir.find_repository()
2196
# for every revision reference the branch has, ensure it is pulled
2198
source_repository = self._get_fallback_repository(old_url)
2199
for revision_id in chain([self.last_revision()],
2200
self.tags.get_reverse_tag_dict()):
2201
self.repository.fetch(source_repository, revision_id,
2204
self._activate_fallback_location(url)
2205
# write this out after the repository is stacked to avoid setting a
2206
# stacked config that doesn't work.
2207
self._set_config_location('stacked_on_location', url)
2921
2209
def _get_append_revisions_only(self):
2922
return self.get_config(
2923
).get_user_option_as_bool('append_revisions_only')
2210
value = self.get_config().get_user_option('append_revisions_only')
2211
return value == 'True'
2213
def _synchronize_history(self, destination, revision_id):
2214
"""Synchronize last revision and revision history between branches.
2216
This version is most efficient when the destination is also a
2217
BzrBranch6, but works for BzrBranch5, as long as the destination's
2218
repository contains all the lefthand ancestors of the intended
2219
last_revision. If not, set_last_revision_info will fail.
2221
:param destination: The branch to copy the history into
2222
:param revision_id: The revision-id to truncate history at. May
2223
be None to copy complete history.
2225
source_revno, source_revision_id = self.last_revision_info()
2226
if revision_id is None:
2227
revno, revision_id = source_revno, source_revision_id
2228
elif source_revision_id == revision_id:
2229
# we know the revno without needing to walk all of history
2230
revno = source_revno
2232
# To figure out the revno for a random revision, we need to build
2233
# the revision history, and count its length.
2234
# We don't care about the order, just how long it is.
2235
# Alternatively, we could start at the current location, and count
2236
# backwards. But there is no guarantee that we will find it since
2237
# it may be a merged revision.
2238
revno = len(list(self.repository.iter_reverse_revision_history(
2240
destination.set_last_revision_info(revno, revision_id)
2242
def _make_tags(self):
2243
return BasicTags(self)
2925
2245
@needs_write_lock
2926
2246
def generate_revision_history(self, revision_id, last_rev=None,
3126
2426
branch._set_config_location('stacked_on_location', '')
3127
2427
# update target format
3128
2428
branch._transport.put_bytes('format', format.get_format_string())
3131
class Converter7to8(object):
3132
"""Perform an in-place upgrade of format 6 to format 7"""
3134
def convert(self, branch):
3135
format = BzrBranchFormat8()
3136
branch._transport.put_bytes('references', '')
3137
# update target format
3138
branch._transport.put_bytes('format', format.get_format_string())
3141
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3142
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3145
_run_with_write_locked_target will attempt to release the lock it acquires.
3147
If an exception is raised by callable, then that exception *will* be
3148
propagated, even if the unlock attempt raises its own error. Thus
3149
_run_with_write_locked_target should be preferred to simply doing::
3153
return callable(*args, **kwargs)
3158
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3159
# should share code?
3162
result = callable(*args, **kwargs)
3164
exc_info = sys.exc_info()
3168
raise exc_info[0], exc_info[1], exc_info[2]
3174
class InterBranch(InterObject):
3175
"""This class represents operations taking place between two branches.
3177
Its instances have methods like pull() and push() and contain
3178
references to the source and target repositories these operations
3179
can be carried out on.
3183
"""The available optimised InterBranch types."""
3186
def _get_branch_formats_to_test():
3187
"""Return a tuple with the Branch formats to use when testing."""
3188
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3190
def pull(self, overwrite=False, stop_revision=None,
3191
possible_transports=None, local=False):
3192
"""Mirror source into target branch.
3194
The target branch is considered to be 'local', having low latency.
3196
:returns: PullResult instance
3198
raise NotImplementedError(self.pull)
3200
def update_revisions(self, stop_revision=None, overwrite=False,
3202
"""Pull in new perfect-fit revisions.
3204
:param stop_revision: Updated until the given revision
3205
:param overwrite: Always set the branch pointer, rather than checking
3206
to see if it is a proper descendant.
3207
:param graph: A Graph object that can be used to query history
3208
information. This can be None.
3211
raise NotImplementedError(self.update_revisions)
3213
def push(self, overwrite=False, stop_revision=None,
3214
_override_hook_source_branch=None):
3215
"""Mirror the source branch into the target branch.
3217
The source branch is considered to be 'local', having low latency.
3219
raise NotImplementedError(self.push)
3222
class GenericInterBranch(InterBranch):
3223
"""InterBranch implementation that uses public Branch functions.
3227
def _get_branch_formats_to_test():
3228
return BranchFormat._default_format, BranchFormat._default_format
3230
def update_revisions(self, stop_revision=None, overwrite=False,
3232
"""See InterBranch.update_revisions()."""
3233
self.source.lock_read()
3235
other_revno, other_last_revision = self.source.last_revision_info()
3236
stop_revno = None # unknown
3237
if stop_revision is None:
3238
stop_revision = other_last_revision
3239
if _mod_revision.is_null(stop_revision):
3240
# if there are no commits, we're done.
3242
stop_revno = other_revno
3244
# what's the current last revision, before we fetch [and change it
3246
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3247
# we fetch here so that we don't process data twice in the common
3248
# case of having something to pull, and so that the check for
3249
# already merged can operate on the just fetched graph, which will
3250
# be cached in memory.
3251
self.target.fetch(self.source, stop_revision)
3252
# Check to see if one is an ancestor of the other
3255
graph = self.target.repository.get_graph()
3256
if self.target._check_if_descendant_or_diverged(
3257
stop_revision, last_rev, graph, self.source):
3258
# stop_revision is a descendant of last_rev, but we aren't
3259
# overwriting, so we're done.
3261
if stop_revno is None:
3263
graph = self.target.repository.get_graph()
3264
this_revno, this_last_revision = \
3265
self.target.last_revision_info()
3266
stop_revno = graph.find_distance_to_null(stop_revision,
3267
[(other_last_revision, other_revno),
3268
(this_last_revision, this_revno)])
3269
self.target.set_last_revision_info(stop_revno, stop_revision)
3271
self.source.unlock()
3273
def pull(self, overwrite=False, stop_revision=None,
3274
possible_transports=None, _hook_master=None, run_hooks=True,
3275
_override_hook_target=None, local=False):
3278
:param _hook_master: Private parameter - set the branch to
3279
be supplied as the master to pull hooks.
3280
:param run_hooks: Private parameter - if false, this branch
3281
is being called because it's the master of the primary branch,
3282
so it should not run its hooks.
3283
:param _override_hook_target: Private parameter - set the branch to be
3284
supplied as the target_branch to pull hooks.
3285
:param local: Only update the local branch, and not the bound branch.
3287
# This type of branch can't be bound.
3289
raise errors.LocalRequiresBoundBranch()
3290
result = PullResult()
3291
result.source_branch = self.source
3292
if _override_hook_target is None:
3293
result.target_branch = self.target
3295
result.target_branch = _override_hook_target
3296
self.source.lock_read()
3298
# We assume that during 'pull' the target repository is closer than
3300
self.source.update_references(self.target)
3301
graph = self.target.repository.get_graph(self.source.repository)
3302
# TODO: Branch formats should have a flag that indicates
3303
# that revno's are expensive, and pull() should honor that flag.
3305
result.old_revno, result.old_revid = \
3306
self.target.last_revision_info()
3307
self.target.update_revisions(self.source, stop_revision,
3308
overwrite=overwrite, graph=graph)
3309
# TODO: The old revid should be specified when merging tags,
3310
# so a tags implementation that versions tags can only
3311
# pull in the most recent changes. -- JRV20090506
3312
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3314
result.new_revno, result.new_revid = self.target.last_revision_info()
3316
result.master_branch = _hook_master
3317
result.local_branch = result.target_branch
3319
result.master_branch = result.target_branch
3320
result.local_branch = None
3322
for hook in Branch.hooks['post_pull']:
3325
self.source.unlock()
3328
def push(self, overwrite=False, stop_revision=None,
3329
_override_hook_source_branch=None):
3330
"""See InterBranch.push.
3332
This is the basic concrete implementation of push()
3334
:param _override_hook_source_branch: If specified, run
3335
the hooks passing this Branch as the source, rather than self.
3336
This is for use of RemoteBranch, where push is delegated to the
3337
underlying vfs-based Branch.
3339
# TODO: Public option to disable running hooks - should be trivial but
3341
self.source.lock_read()
3343
return _run_with_write_locked_target(
3344
self.target, self._push_with_bound_branches, overwrite,
3346
_override_hook_source_branch=_override_hook_source_branch)
3348
self.source.unlock()
3350
def _push_with_bound_branches(self, overwrite, stop_revision,
3351
_override_hook_source_branch=None):
3352
"""Push from source into target, and into target's master if any.
3355
if _override_hook_source_branch:
3356
result.source_branch = _override_hook_source_branch
3357
for hook in Branch.hooks['post_push']:
3360
bound_location = self.target.get_bound_location()
3361
if bound_location and self.target.base != bound_location:
3362
# there is a master branch.
3364
# XXX: Why the second check? Is it even supported for a branch to
3365
# be bound to itself? -- mbp 20070507
3366
master_branch = self.target.get_master_branch()
3367
master_branch.lock_write()
3369
# push into the master from the source branch.
3370
self.source._basic_push(master_branch, overwrite, stop_revision)
3371
# and push into the target branch from the source. Note that we
3372
# push from the source branch again, because its considered the
3373
# highest bandwidth repository.
3374
result = self.source._basic_push(self.target, overwrite,
3376
result.master_branch = master_branch
3377
result.local_branch = self.target
3381
master_branch.unlock()
3384
result = self.source._basic_push(self.target, overwrite,
3386
# TODO: Why set master_branch and local_branch if there's no
3387
# binding? Maybe cleaner to just leave them unset? -- mbp
3389
result.master_branch = self.target
3390
result.local_branch = None
3395
def is_compatible(self, source, target):
3396
# GenericBranch uses the public API, so always compatible
3400
class InterToBranch5(GenericInterBranch):
3403
def _get_branch_formats_to_test():
3404
return BranchFormat._default_format, BzrBranchFormat5()
3406
def pull(self, overwrite=False, stop_revision=None,
3407
possible_transports=None, run_hooks=True,
3408
_override_hook_target=None, local=False):
3409
"""Pull from source into self, updating my master if any.
3411
:param run_hooks: Private parameter - if false, this branch
3412
is being called because it's the master of the primary branch,
3413
so it should not run its hooks.
3415
bound_location = self.target.get_bound_location()
3416
if local and not bound_location:
3417
raise errors.LocalRequiresBoundBranch()
3418
master_branch = None
3419
if not local and bound_location and self.source.user_url != bound_location:
3420
# not pulling from master, so we need to update master.
3421
master_branch = self.target.get_master_branch(possible_transports)
3422
master_branch.lock_write()
3425
# pull from source into master.
3426
master_branch.pull(self.source, overwrite, stop_revision,
3428
return super(InterToBranch5, self).pull(overwrite,
3429
stop_revision, _hook_master=master_branch,
3430
run_hooks=run_hooks,
3431
_override_hook_target=_override_hook_target)
3434
master_branch.unlock()
3437
InterBranch.register_optimiser(GenericInterBranch)
3438
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
