150
191
possible_transports)
151
192
return control.open_branch(), relpath
194
def _push_should_merge_tags(self):
195
"""Should _basic_push merge this branch's tags into the target?
197
The default implementation returns False if this branch has no tags,
198
and True the rest of the time. Subclasses may override this.
200
return self.supports_tags() and self.tags.get_tag_dict()
153
202
def get_config(self):
154
203
return BranchConfig(self)
157
return self.get_config().get_nickname()
205
def _get_config(self):
206
"""Get the concrete config for just the config in this branch.
208
This is not intended for client use; see Branch.get_config for the
213
:return: An object supporting get_option and set_option.
215
raise NotImplementedError(self._get_config)
217
def _get_fallback_repository(self, url):
218
"""Get the repository we fallback to at url."""
219
url = urlutils.join(self.base, url)
220
a_bzrdir = bzrdir.BzrDir.open(url,
221
possible_transports=[self.bzrdir.root_transport])
222
return a_bzrdir.open_branch().repository
224
def _get_tags_bytes(self):
225
"""Get the bytes of a serialised tags dict.
227
Note that not all branches support tags, nor do all use the same tags
228
logic: this method is specific to BasicTags. Other tag implementations
229
may use the same method name and behave differently, safely, because
230
of the double-dispatch via
231
format.make_tags->tags_instance->get_tags_dict.
233
:return: The bytes of the tags file.
234
:seealso: Branch._set_tags_bytes.
236
return self._transport.get_bytes('tags')
238
def _get_nick(self, local=False, possible_transports=None):
239
config = self.get_config()
240
# explicit overrides master, but don't look for master if local is True
241
if not local and not config.has_explicit_nickname():
243
master = self.get_master_branch(possible_transports)
244
if master is not None:
245
# return the master branch value
247
except errors.BzrError, e:
248
# Silently fall back to local implicit nick if the master is
250
mutter("Could not connect to bound branch, "
251
"falling back to local nick.\n " + str(e))
252
return config.get_nickname()
159
254
def _set_nick(self, nick):
160
255
self.get_config().set_user_option('nickname', nick, warn_masked=True)
181
303
raise NotImplementedError(self.get_physical_lock_status)
306
def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
307
"""Return the revision_id for a dotted revno.
309
:param revno: a tuple like (1,) or (1,1,2)
310
:param _cache_reverse: a private parameter enabling storage
311
of the reverse mapping in a top level cache. (This should
312
only be done in selective circumstances as we want to
313
avoid having the mapping cached multiple times.)
314
:return: the revision_id
315
:raises errors.NoSuchRevision: if the revno doesn't exist
317
rev_id = self._do_dotted_revno_to_revision_id(revno)
319
self._partial_revision_id_to_revno_cache[rev_id] = revno
322
def _do_dotted_revno_to_revision_id(self, revno):
323
"""Worker function for dotted_revno_to_revision_id.
325
Subclasses should override this if they wish to
326
provide a more efficient implementation.
329
return self.get_rev_id(revno[0])
330
revision_id_to_revno = self.get_revision_id_to_revno_map()
331
revision_ids = [revision_id for revision_id, this_revno
332
in revision_id_to_revno.iteritems()
333
if revno == this_revno]
334
if len(revision_ids) == 1:
335
return revision_ids[0]
337
revno_str = '.'.join(map(str, revno))
338
raise errors.NoSuchRevision(self, revno_str)
341
def revision_id_to_dotted_revno(self, revision_id):
342
"""Given a revision id, return its dotted revno.
344
:return: a tuple like (1,) or (400,1,3).
346
return self._do_revision_id_to_dotted_revno(revision_id)
348
def _do_revision_id_to_dotted_revno(self, revision_id):
349
"""Worker function for revision_id_to_revno."""
350
# Try the caches if they are loaded
351
result = self._partial_revision_id_to_revno_cache.get(revision_id)
352
if result is not None:
354
if self._revision_id_to_revno_cache:
355
result = self._revision_id_to_revno_cache.get(revision_id)
357
raise errors.NoSuchRevision(self, revision_id)
358
# Try the mainline as it's optimised
360
revno = self.revision_id_to_revno(revision_id)
362
except errors.NoSuchRevision:
363
# We need to load and use the full revno map after all
364
result = self.get_revision_id_to_revno_map().get(revision_id)
366
raise errors.NoSuchRevision(self, revision_id)
184
370
def get_revision_id_to_revno_map(self):
185
371
"""Return the revision_id => dotted revno map.
211
397
:return: A dictionary mapping revision_id => dotted revno.
213
last_revision = self.last_revision()
214
revision_graph = self.repository.get_revision_graph(last_revision)
215
merge_sorted_revisions = tsort.merge_sort(
220
399
revision_id_to_revno = dict((rev_id, revno)
221
for seq_num, rev_id, depth, revno, end_of_merge
222
in merge_sorted_revisions)
400
for rev_id, depth, revno, end_of_merge
401
in self.iter_merge_sorted_revisions())
223
402
return revision_id_to_revno
405
def iter_merge_sorted_revisions(self, start_revision_id=None,
406
stop_revision_id=None, stop_rule='exclude', direction='reverse'):
407
"""Walk the revisions for a branch in merge sorted order.
409
Merge sorted order is the output from a merge-aware,
410
topological sort, i.e. all parents come before their
411
children going forward; the opposite for reverse.
413
:param start_revision_id: the revision_id to begin walking from.
414
If None, the branch tip is used.
415
:param stop_revision_id: the revision_id to terminate the walk
416
after. If None, the rest of history is included.
417
:param stop_rule: if stop_revision_id is not None, the precise rule
418
to use for termination:
419
* 'exclude' - leave the stop revision out of the result (default)
420
* 'include' - the stop revision is the last item in the result
421
* 'with-merges' - include the stop revision and all of its
422
merged revisions in the result
423
:param direction: either 'reverse' or 'forward':
424
* reverse means return the start_revision_id first, i.e.
425
start at the most recent revision and go backwards in history
426
* forward returns tuples in the opposite order to reverse.
427
Note in particular that forward does *not* do any intelligent
428
ordering w.r.t. depth as some clients of this API may like.
429
(If required, that ought to be done at higher layers.)
431
:return: an iterator over (revision_id, depth, revno, end_of_merge)
434
* revision_id: the unique id of the revision
435
* depth: How many levels of merging deep this node has been
437
* revno_sequence: This field provides a sequence of
438
revision numbers for all revisions. The format is:
439
(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
440
branch that the revno is on. From left to right the REVNO numbers
441
are the sequence numbers within that branch of the revision.
442
* end_of_merge: When True the next node (earlier in history) is
443
part of a different merge.
445
# Note: depth and revno values are in the context of the branch so
446
# we need the full graph to get stable numbers, regardless of the
448
if self._merge_sorted_revisions_cache is None:
449
last_revision = self.last_revision()
450
last_key = (last_revision,)
451
known_graph = self.repository.revisions.get_known_graph_ancestry(
453
self._merge_sorted_revisions_cache = known_graph.merge_sort(
455
filtered = self._filter_merge_sorted_revisions(
456
self._merge_sorted_revisions_cache, start_revision_id,
457
stop_revision_id, stop_rule)
458
if direction == 'reverse':
460
if direction == 'forward':
461
return reversed(list(filtered))
463
raise ValueError('invalid direction %r' % direction)
465
def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
466
start_revision_id, stop_revision_id, stop_rule):
467
"""Iterate over an inclusive range of sorted revisions."""
468
rev_iter = iter(merge_sorted_revisions)
469
if start_revision_id is not None:
470
for node in rev_iter:
471
rev_id = node.key[-1]
472
if rev_id != start_revision_id:
475
# The decision to include the start or not
476
# depends on the stop_rule if a stop is provided
477
# so pop this node back into the iterator
478
rev_iter = chain(iter([node]), rev_iter)
480
if stop_revision_id is None:
482
for node in rev_iter:
483
rev_id = node.key[-1]
484
yield (rev_id, node.merge_depth, node.revno,
486
elif stop_rule == 'exclude':
487
for node in rev_iter:
488
rev_id = node.key[-1]
489
if rev_id == stop_revision_id:
491
yield (rev_id, node.merge_depth, node.revno,
493
elif stop_rule == 'include':
494
for node in rev_iter:
495
rev_id = node.key[-1]
496
yield (rev_id, node.merge_depth, node.revno,
498
if rev_id == stop_revision_id:
500
elif stop_rule == 'with-merges':
501
stop_rev = self.repository.get_revision(stop_revision_id)
502
if stop_rev.parent_ids:
503
left_parent = stop_rev.parent_ids[0]
505
left_parent = _mod_revision.NULL_REVISION
506
# left_parent is the actual revision we want to stop logging at,
507
# since we want to show the merged revisions after the stop_rev too
508
reached_stop_revision_id = False
509
revision_id_whitelist = []
510
for node in rev_iter:
511
rev_id = node.key[-1]
512
if rev_id == left_parent:
513
# reached the left parent after the stop_revision
515
if (not reached_stop_revision_id or
516
rev_id in revision_id_whitelist):
517
yield (rev_id, node.merge_depth, node.revno,
519
if reached_stop_revision_id or rev_id == stop_revision_id:
520
# only do the merged revs of rev_id from now on
521
rev = self.repository.get_revision(rev_id)
523
reached_stop_revision_id = True
524
revision_id_whitelist.extend(rev.parent_ids)
526
raise ValueError('invalid stop_rule %r' % stop_rule)
225
528
def leave_lock_in_place(self):
226
529
"""Tell this branch object not to release the physical lock when this
227
530
object is unlocked.
229
532
If lock_write doesn't return a token, then this method is not supported.
231
534
self.control_files.leave_in_place()
357
661
def set_revision_history(self, rev_history):
358
662
raise NotImplementedError(self.set_revision_history)
665
def set_parent(self, url):
666
"""See Branch.set_parent."""
667
# TODO: Maybe delete old location files?
668
# URLs should never be unicode, even on the local fs,
669
# FIXUP this and get_parent in a future branch format bump:
670
# read and rewrite the file. RBC 20060125
672
if isinstance(url, unicode):
674
url = url.encode('ascii')
675
except UnicodeEncodeError:
676
raise errors.InvalidURL(url,
677
"Urls must be 7-bit ascii, "
678
"use bzrlib.urlutils.escape")
679
url = urlutils.relative_url(self.base, url)
680
self._set_parent_location(url)
683
def set_stacked_on_url(self, url):
684
"""Set the URL this branch is stacked against.
686
:raises UnstackableBranchFormat: If the branch does not support
688
:raises UnstackableRepositoryFormat: If the repository does not support
691
if not self._format.supports_stacking():
692
raise errors.UnstackableBranchFormat(self._format, self.base)
693
# XXX: Changing from one fallback repository to another does not check
694
# that all the data you need is present in the new fallback.
695
# Possibly it should.
696
self._check_stackable_repo()
699
old_url = self.get_stacked_on_url()
700
except (errors.NotStacked, errors.UnstackableBranchFormat,
701
errors.UnstackableRepositoryFormat):
705
self._activate_fallback_location(url)
706
# write this out after the repository is stacked to avoid setting a
707
# stacked config that doesn't work.
708
self._set_config_location('stacked_on_location', url)
711
"""Change a branch to be unstacked, copying data as needed.
713
Don't call this directly, use set_stacked_on_url(None).
715
pb = ui.ui_factory.nested_progress_bar()
717
pb.update("Unstacking")
718
# The basic approach here is to fetch the tip of the branch,
719
# including all available ghosts, from the existing stacked
720
# repository into a new repository object without the fallbacks.
722
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
723
# correct for CHKMap repostiories
724
old_repository = self.repository
725
if len(old_repository._fallback_repositories) != 1:
726
raise AssertionError("can't cope with fallback repositories "
727
"of %r" % (self.repository,))
728
# unlock it, including unlocking the fallback
729
old_repository.unlock()
730
old_repository.lock_read()
732
# Repositories don't offer an interface to remove fallback
733
# repositories today; take the conceptually simpler option and just
734
# reopen it. We reopen it starting from the URL so that we
735
# get a separate connection for RemoteRepositories and can
736
# stream from one of them to the other. This does mean doing
737
# separate SSH connection setup, but unstacking is not a
738
# common operation so it's tolerable.
739
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
740
new_repository = new_bzrdir.find_repository()
741
self.repository = new_repository
742
if self.repository._fallback_repositories:
743
raise AssertionError("didn't expect %r to have "
744
"fallback_repositories"
745
% (self.repository,))
746
# this is not paired with an unlock because it's just restoring
747
# the previous state; the lock's released when set_stacked_on_url
749
self.repository.lock_write()
750
# XXX: If you unstack a branch while it has a working tree
751
# with a pending merge, the pending-merged revisions will no
752
# longer be present. You can (probably) revert and remerge.
754
# XXX: This only fetches up to the tip of the repository; it
755
# doesn't bring across any tags. That's fairly consistent
756
# with how branch works, but perhaps not ideal.
757
self.repository.fetch(old_repository,
758
revision_id=self.last_revision(),
761
old_repository.unlock()
765
def _set_tags_bytes(self, bytes):
766
"""Mirror method for _get_tags_bytes.
768
:seealso: Branch._get_tags_bytes.
770
return _run_with_write_locked_target(self, self._transport.put_bytes,
360
773
def _cache_revision_history(self, rev_history):
361
774
"""Set the cached revision history to rev_history.
497
933
except ValueError:
498
934
raise errors.NoSuchRevision(self, revision_id)
500
937
def get_rev_id(self, revno, history=None):
501
938
"""Find the revision id of the specified revno."""
503
940
return _mod_revision.NULL_REVISION
505
history = self.revision_history()
506
if revno <= 0 or revno > len(history):
941
last_revno, last_revid = self.last_revision_info()
942
if revno == last_revno:
944
if revno <= 0 or revno > last_revno:
507
945
raise errors.NoSuchRevision(self, revno)
508
return history[revno - 1]
946
distance_from_last = last_revno - revno
947
if len(self._partial_revision_history_cache) <= distance_from_last:
948
self._extend_partial_history(distance_from_last)
949
return self._partial_revision_history_cache[distance_from_last]
510
952
def pull(self, source, overwrite=False, stop_revision=None,
511
possible_transports=None):
953
possible_transports=None, *args, **kwargs):
512
954
"""Mirror source into this branch.
514
956
This branch is considered to be 'local', having low latency.
516
958
:returns: PullResult instance
518
raise NotImplementedError(self.pull)
960
return InterBranch.get(source, self).pull(overwrite=overwrite,
961
stop_revision=stop_revision,
962
possible_transports=possible_transports, *args, **kwargs)
520
def push(self, target, overwrite=False, stop_revision=None):
964
def push(self, target, overwrite=False, stop_revision=None, *args,
521
966
"""Mirror this branch into target.
523
968
This branch is considered to be 'local', having low latency.
525
raise NotImplementedError(self.push)
970
return InterBranch.get(self, target).push(overwrite, stop_revision,
973
def lossy_push(self, target, stop_revision=None):
974
"""Push deltas into another branch.
976
:note: This does not, like push, retain the revision ids from
977
the source branch and will, rather than adding bzr-specific
978
metadata, push only those semantics of the revision that can be
979
natively represented by this branch' VCS.
981
:param target: Target branch
982
:param stop_revision: Revision to push, defaults to last revision.
983
:return: BranchPushResult with an extra member revidmap:
984
A dictionary mapping revision ids from the target branch
985
to new revision ids in the target branch, for each
986
revision that was pushed.
988
inter = InterBranch.get(self, target)
989
lossy_push = getattr(inter, "lossy_push", None)
990
if lossy_push is None:
991
raise errors.LossyPushToSameVCS(self, target)
992
return lossy_push(stop_revision)
527
994
def basis_tree(self):
528
995
"""Return `Tree` object for last revision."""
529
996
return self.repository.revision_tree(self.last_revision())
531
def rename_one(self, from_rel, to_rel):
534
This can change the directory or the filename or both.
536
raise NotImplementedError(self.rename_one)
538
def move(self, from_paths, to_name):
541
to_name must exist as a versioned directory.
543
If to_name exists and is a directory, the files are moved into
544
it, keeping their old names. If it is a directory,
546
Note that to_name is only the last component of the new name;
547
this doesn't change the directory.
549
This returns a list of (from_path, to_path) pairs for each
552
raise NotImplementedError(self.move)
554
998
def get_parent(self):
555
999
"""Return the parent location of the branch.
557
This is the default location for push/pull/missing. The usual
1001
This is the default location for pull/missing. The usual
558
1002
pattern is that the user can override it by specifying a
561
raise NotImplementedError(self.get_parent)
1005
parent = self._get_parent_location()
1008
# This is an old-format absolute path to a local branch
1009
# turn it into a url
1010
if parent.startswith('/'):
1011
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1013
return urlutils.join(self.base[:-1], parent)
1014
except errors.InvalidURLJoin, e:
1015
raise errors.InaccessibleParent(parent, self.base)
1017
def _get_parent_location(self):
1018
raise NotImplementedError(self._get_parent_location)
563
1020
def _set_config_location(self, name, url, config=None,
564
1021
make_relative=False):
642
1122
self.check_real_revno(revno)
644
1124
def check_real_revno(self, revno):
646
1126
Check whether a revno corresponds to a real revision.
647
1127
Zero (the NULL revision) is considered invalid
649
1129
if revno < 1 or revno > self.revno():
650
raise InvalidRevisionNumber(revno)
1130
raise errors.InvalidRevisionNumber(revno)
652
1132
@needs_read_lock
653
def clone(self, to_bzrdir, revision_id=None):
1133
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
654
1134
"""Clone this branch into to_bzrdir preserving all semantic values.
1136
Most API users will want 'create_clone_on_transport', which creates a
1137
new bzrdir and branch on the fly.
656
1139
revision_id: if not None, the revision history in the new branch will
657
1140
be truncated to end with revision_id.
659
result = self._format.initialize(to_bzrdir)
660
self.copy_content_into(result, revision_id=revision_id)
1142
result = to_bzrdir.create_branch()
1145
if repository_policy is not None:
1146
repository_policy.configure_branch(result)
1147
self.copy_content_into(result, revision_id=revision_id)
663
1152
@needs_read_lock
664
def sprout(self, to_bzrdir, revision_id=None):
1153
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
665
1154
"""Create a new line of development from the branch, into to_bzrdir.
1156
to_bzrdir controls the branch format.
667
1158
revision_id: if not None, the revision history in the new branch will
668
1159
be truncated to end with revision_id.
670
result = self._format.initialize(to_bzrdir)
671
self.copy_content_into(result, revision_id=revision_id)
672
result.set_parent(self.bzrdir.root_transport.base)
1161
if (repository_policy is not None and
1162
repository_policy.requires_stacking()):
1163
to_bzrdir._format.require_stacking(_skip_repo=True)
1164
result = to_bzrdir.create_branch()
1167
if repository_policy is not None:
1168
repository_policy.configure_branch(result)
1169
self.copy_content_into(result, revision_id=revision_id)
1170
result.set_parent(self.bzrdir.root_transport.base)
675
1175
def _synchronize_history(self, destination, revision_id):
676
1176
"""Synchronize last revision and revision history between branches.
678
1178
This version is most efficient when the destination is also a
679
BzrBranch5, but works for BzrBranch6 as long as the revision
680
history is the true lefthand parent history, and all of the revisions
681
are in the destination's repository. If not, set_revision_history
1179
BzrBranch6, but works for BzrBranch5, as long as the destination's
1180
repository contains all the lefthand ancestors of the intended
1181
last_revision. If not, set_last_revision_info will fail.
684
1183
:param destination: The branch to copy the history into
685
1184
:param revision_id: The revision-id to truncate history at. May
686
1185
be None to copy complete history.
688
if revision_id == _mod_revision.NULL_REVISION:
690
new_history = self.revision_history()
691
if revision_id is not None and new_history != []:
1187
source_revno, source_revision_id = self.last_revision_info()
1188
if revision_id is None:
1189
revno, revision_id = source_revno, source_revision_id
1191
graph = self.repository.get_graph()
693
new_history = new_history[:new_history.index(revision_id) + 1]
695
rev = self.repository.get_revision(revision_id)
696
new_history = rev.get_history(self.repository)[1:]
697
destination.set_revision_history(new_history)
1193
revno = graph.find_distance_to_null(revision_id,
1194
[(source_revision_id, source_revno)])
1195
except errors.GhostRevisionsHaveNoRevno:
1196
# Default to 1, if we can't find anything else
1198
destination.set_last_revision_info(revno, revision_id)
699
1200
@needs_read_lock
700
1201
def copy_content_into(self, destination, revision_id=None):
713
1215
destination.set_parent(parent)
714
self.tags.merge_to(destination.tags)
1216
if self._push_should_merge_tags():
1217
self.tags.merge_to(destination.tags)
1219
def update_references(self, target):
1220
if not getattr(self._format, 'supports_reference_locations', False):
1222
reference_dict = self._get_all_reference_info()
1223
if len(reference_dict) == 0:
1225
old_base = self.base
1226
new_base = target.base
1227
target_reference_dict = target._get_all_reference_info()
1228
for file_id, (tree_path, branch_location) in (
1229
reference_dict.items()):
1230
branch_location = urlutils.rebase_url(branch_location,
1232
target_reference_dict.setdefault(
1233
file_id, (tree_path, branch_location))
1234
target._set_all_reference_info(target_reference_dict)
716
1236
@needs_read_lock
1237
def check(self, refs):
718
1238
"""Check consistency of the branch.
720
1240
In particular this checks that revisions given in the revision-history
721
do actually match up in the revision graph, and that they're all
1241
do actually match up in the revision graph, and that they're all
722
1242
present in the repository.
724
1244
Callers will typically also want to check the repository.
1246
:param refs: Calculated refs for this branch as specified by
1247
branch._get_check_refs()
726
1248
:return: A BranchCheckResult.
728
mainline_parent_id = None
729
for revision_id in self.revision_history():
731
revision = self.repository.get_revision(revision_id)
732
except errors.NoSuchRevision, e:
733
raise errors.BzrCheckError("mainline revision {%s} not in repository"
735
# In general the first entry on the revision history has no parents.
736
# But it's not illegal for it to have parents listed; this can happen
737
# in imports from Arch when the parents weren't reachable.
738
if mainline_parent_id is not None:
739
if mainline_parent_id not in revision.parent_ids:
740
raise errors.BzrCheckError("previous revision {%s} not listed among "
742
% (mainline_parent_id, revision_id))
743
mainline_parent_id = revision_id
744
return BranchCheckResult(self)
1250
result = BranchCheckResult(self)
1251
last_revno, last_revision_id = self.last_revision_info()
1252
actual_revno = refs[('lefthand-distance', last_revision_id)]
1253
if actual_revno != last_revno:
1254
result.errors.append(errors.BzrCheckError(
1255
'revno does not match len(mainline) %s != %s' % (
1256
last_revno, actual_revno)))
1257
# TODO: We should probably also check that self.revision_history
1258
# matches the repository for older branch formats.
1259
# If looking for the code that cross-checks repository parents against
1260
# the iter_reverse_revision_history output, that is now a repository
746
1264
def _get_checkout_format(self):
747
1265
"""Return the most suitable metadir for a checkout of this branch.
794
1344
basis_tree.unlock()
797
def reference_parent(self, file_id, path):
1348
def reconcile(self, thorough=True):
1349
"""Make sure the data stored in this branch is consistent."""
1350
from bzrlib.reconcile import BranchReconciler
1351
reconciler = BranchReconciler(self, thorough=thorough)
1352
reconciler.reconcile()
1355
def reference_parent(self, file_id, path, possible_transports=None):
798
1356
"""Return the parent branch for a tree-reference file_id
799
1357
:param file_id: The file_id of the tree reference
800
1358
:param path: The path of the file_id in the tree
801
1359
:return: A branch associated with the file_id
803
1361
# FIXME should provide multiple branches, based on config
804
return Branch.open(self.bzrdir.root_transport.clone(path).base)
1362
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1363
possible_transports=possible_transports)
806
1365
def supports_tags(self):
807
1366
return self._format.supports_tags()
1368
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1370
"""Ensure that revision_b is a descendant of revision_a.
1372
This is a helper function for update_revisions.
1374
:raises: DivergedBranches if revision_b has diverged from revision_a.
1375
:returns: True if revision_b is a descendant of revision_a.
1377
relation = self._revision_relations(revision_a, revision_b, graph)
1378
if relation == 'b_descends_from_a':
1380
elif relation == 'diverged':
1381
raise errors.DivergedBranches(self, other_branch)
1382
elif relation == 'a_descends_from_b':
1385
raise AssertionError("invalid relation: %r" % (relation,))
1387
def _revision_relations(self, revision_a, revision_b, graph):
1388
"""Determine the relationship between two revisions.
1390
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1392
heads = graph.heads([revision_a, revision_b])
1393
if heads == set([revision_b]):
1394
return 'b_descends_from_a'
1395
elif heads == set([revision_a, revision_b]):
1396
# These branches have diverged
1398
elif heads == set([revision_a]):
1399
return 'a_descends_from_b'
1401
raise AssertionError("invalid heads: %r" % (heads,))
810
1404
class BranchFormat(object):
811
1405
"""An encapsulation of the initialization and open routines for a format.
914
1533
"""Is this format supported?
916
1535
Supported formats can be initialized and opened.
917
Unsupported formats may not support initialization or committing or
1536
Unsupported formats may not support initialization or committing or
918
1537
some other features depending on the reason for not being supported.
922
def open(self, a_bzrdir, _found=False):
1541
def make_tags(self, branch):
1542
"""Create a tags object for branch.
1544
This method is on BranchFormat, because BranchFormats are reflected
1545
over the wire via network_name(), whereas full Branch instances require
1546
multiple VFS method calls to operate at all.
1548
The default implementation returns a disabled-tags instance.
1550
Note that it is normal for branch to be a RemoteBranch when using tags
1553
return DisabledTags(branch)
1555
def network_name(self):
1556
"""A simple byte string uniquely identifying this format for RPC calls.
1558
MetaDir branch formats use their disk format string to identify the
1559
repository over the wire. All in one formats such as bzr < 0.8, and
1560
foreign formats like svn/git and hg should use some marker which is
1561
unique and immutable.
1563
raise NotImplementedError(self.network_name)
1565
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
923
1566
"""Return the branch object for a_bzrdir
925
_found is a private parameter, do not use it. It is used to indicate
926
if format probing has already be done.
1568
:param a_bzrdir: A BzrDir that contains a branch.
1569
:param _found: a private parameter, do not use it. It is used to
1570
indicate if format probing has already be done.
1571
:param ignore_fallbacks: when set, no fallback branches will be opened
1572
(if there are any). Default is to open fallbacks.
928
1574
raise NotImplementedError(self.open)
931
1577
def register_format(klass, format):
1578
"""Register a metadir format."""
932
1579
klass._formats[format.get_format_string()] = format
1580
# Metadir formats have a network name of their format string, and get
1581
# registered as class factories.
1582
network_format_registry.register(format.get_format_string(), format.__class__)
935
1585
def set_default_format(klass, format):
936
1586
klass._default_format = format
1588
def supports_set_append_revisions_only(self):
1589
"""True if this format supports set_append_revisions_only."""
1592
def supports_stacking(self):
1593
"""True if this format records a stacked-on branch."""
939
1597
def unregister_format(klass, format):
940
assert klass._formats[format.get_format_string()] is format
941
1598
del klass._formats[format.get_format_string()]
943
1600
def __str__(self):
944
return self.get_format_string().rstrip()
1601
return self.get_format_description().rstrip()
946
1603
def supports_tags(self):
947
1604
"""True if this format supports tags stored in the branch"""
948
1605
return False # by default
950
# XXX: Probably doesn't really belong here -- mbp 20070212
951
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
953
branch_transport = a_bzrdir.get_branch_transport(self)
954
control_files = lockable_files.LockableFiles(branch_transport,
955
lock_filename, lock_class)
956
control_files.create_lock()
957
control_files.lock_write()
959
for filename, content in utf8_files:
960
control_files.put_utf8(filename, content)
962
control_files.unlock()
965
1608
class BranchHooks(Hooks):
966
1609
"""A dictionary mapping hook name to a list of callables for branch hooks.
968
1611
e.g. ['set_rh'] Is the list of items to be called when the
969
1612
set_revision_history function is invoked.
978
1621
Hooks.__init__(self)
979
# Introduced in 0.15:
980
# invoked whenever the revision history has been set
981
# with set_revision_history. The api signature is
982
# (branch, revision_history), and the branch will
985
# invoked after a push operation completes.
986
# the api signature is
988
# containing the members
989
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
990
# where local is the local target branch or None, master is the target
991
# master branch, and the rest should be self explanatory. The source
992
# is read locked and the target branches write locked. Source will
993
# be the local low-latency branch.
994
self['post_push'] = []
995
# invoked after a pull operation completes.
996
# the api signature is
998
# containing the members
999
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1000
# where local is the local branch or None, master is the target
1001
# master branch, and the rest should be self explanatory. The source
1002
# is read locked and the target branches write locked. The local
1003
# branch is the low-latency branch.
1004
self['post_pull'] = []
1005
# invoked before a commit operation takes place.
1006
# the api signature is
1007
# (local, master, old_revno, old_revid, future_revno, future_revid,
1008
# tree_delta, future_tree).
1009
# old_revid is NULL_REVISION for the first commit to a branch
1010
# tree_delta is a TreeDelta object describing changes from the basis
1011
# revision, hooks MUST NOT modify this delta
1012
# future_tree is an in-memory tree obtained from
1013
# CommitBuilder.revision_tree() and hooks MUST NOT modify this tree
1014
self['pre_commit'] = []
1015
# invoked after a commit operation completes.
1016
# the api signature is
1017
# (local, master, old_revno, old_revid, new_revno, new_revid)
1018
# old_revid is NULL_REVISION for the first commit to a branch.
1019
self['post_commit'] = []
1020
# invoked after a uncommit operation completes.
1021
# the api signature is
1022
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1023
# local is the local branch or None, master is the target branch,
1024
# and an empty branch recieves new_revno of 0, new_revid of None.
1025
self['post_uncommit'] = []
1622
self.create_hook(HookPoint('set_rh',
1623
"Invoked whenever the revision history has been set via "
1624
"set_revision_history. The api signature is (branch, "
1625
"revision_history), and the branch will be write-locked. "
1626
"The set_rh hook can be expensive for bzr to trigger, a better "
1627
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1628
self.create_hook(HookPoint('open',
1629
"Called with the Branch object that has been opened after a "
1630
"branch is opened.", (1, 8), None))
1631
self.create_hook(HookPoint('post_push',
1632
"Called after a push operation completes. post_push is called "
1633
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1634
"bzr client.", (0, 15), None))
1635
self.create_hook(HookPoint('post_pull',
1636
"Called after a pull operation completes. post_pull is called "
1637
"with a bzrlib.branch.PullResult object and only runs in the "
1638
"bzr client.", (0, 15), None))
1639
self.create_hook(HookPoint('pre_commit',
1640
"Called after a commit is calculated but before it is is "
1641
"completed. pre_commit is called with (local, master, old_revno, "
1642
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1643
"). old_revid is NULL_REVISION for the first commit to a branch, "
1644
"tree_delta is a TreeDelta object describing changes from the "
1645
"basis revision. hooks MUST NOT modify this delta. "
1646
" future_tree is an in-memory tree obtained from "
1647
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1648
"tree.", (0,91), None))
1649
self.create_hook(HookPoint('post_commit',
1650
"Called in the bzr client after a commit has completed. "
1651
"post_commit is called with (local, master, old_revno, old_revid, "
1652
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1653
"commit to a branch.", (0, 15), None))
1654
self.create_hook(HookPoint('post_uncommit',
1655
"Called in the bzr client after an uncommit completes. "
1656
"post_uncommit is called with (local, master, old_revno, "
1657
"old_revid, new_revno, new_revid) where local is the local branch "
1658
"or None, master is the target branch, and an empty branch "
1659
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1660
self.create_hook(HookPoint('pre_change_branch_tip',
1661
"Called in bzr client and server before a change to the tip of a "
1662
"branch is made. pre_change_branch_tip is called with a "
1663
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1664
"commit, uncommit will all trigger this hook.", (1, 6), None))
1665
self.create_hook(HookPoint('post_change_branch_tip',
1666
"Called in bzr client and server after a change to the tip of a "
1667
"branch is made. post_change_branch_tip is called with a "
1668
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1669
"commit, uncommit will all trigger this hook.", (1, 4), None))
1670
self.create_hook(HookPoint('transform_fallback_location',
1671
"Called when a stacked branch is activating its fallback "
1672
"locations. transform_fallback_location is called with (branch, "
1673
"url), and should return a new url. Returning the same url "
1674
"allows it to be used as-is, returning a different one can be "
1675
"used to cause the branch to stack on a closer copy of that "
1676
"fallback_location. Note that the branch cannot have history "
1677
"accessing methods called on it during this hook because the "
1678
"fallback locations have not been activated. When there are "
1679
"multiple hooks installed for transform_fallback_location, "
1680
"all are called with the url returned from the previous hook."
1681
"The order is however undefined.", (1, 9), None))
1028
1684
# install the default hooks into the Branch class.
1029
1685
Branch.hooks = BranchHooks()
1688
class ChangeBranchTipParams(object):
1689
"""Object holding parameters passed to *_change_branch_tip hooks.
1691
There are 5 fields that hooks may wish to access:
1693
:ivar branch: the branch being changed
1694
:ivar old_revno: revision number before the change
1695
:ivar new_revno: revision number after the change
1696
:ivar old_revid: revision id before the change
1697
:ivar new_revid: revision id after the change
1699
The revid fields are strings. The revno fields are integers.
1702
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1703
"""Create a group of ChangeBranchTip parameters.
1705
:param branch: The branch being changed.
1706
:param old_revno: Revision number before the change.
1707
:param new_revno: Revision number after the change.
1708
:param old_revid: Tip revision id before the change.
1709
:param new_revid: Tip revision id after the change.
1711
self.branch = branch
1712
self.old_revno = old_revno
1713
self.new_revno = new_revno
1714
self.old_revid = old_revid
1715
self.new_revid = new_revid
1717
def __eq__(self, other):
1718
return self.__dict__ == other.__dict__
1721
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1722
self.__class__.__name__, self.branch,
1723
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1032
1726
class BzrBranchFormat4(BranchFormat):
1033
1727
"""Bzr branch format 4.
1146
1867
def initialize(self, a_bzrdir):
1147
1868
"""Create a branch of this format in a_bzrdir."""
1148
1869
utf8_files = [('last-revision', '0 null:\n'),
1149
('branch-name', ''),
1150
('branch.conf', ''),
1153
return self._initialize_helper(a_bzrdir, utf8_files)
1155
def open(self, a_bzrdir, _found=False):
1156
"""Return the branch object for a_bzrdir
1158
_found is a private parameter, do not use it. It is used to indicate
1159
if format probing has already be done.
1162
format = BranchFormat.find_format(a_bzrdir)
1163
assert format.__class__ == self.__class__
1164
transport = a_bzrdir.get_branch_transport(None)
1165
control_files = lockable_files.LockableFiles(transport, 'lock',
1167
return BzrBranch6(_format=self,
1168
_control_files=control_files,
1170
_repository=a_bzrdir.find_repository())
1172
def supports_tags(self):
1870
('branch.conf', ''),
1873
return self._initialize_helper(a_bzrdir, utf8_files)
1875
def make_tags(self, branch):
1876
"""See bzrlib.branch.BranchFormat.make_tags()."""
1877
return BasicTags(branch)
1879
def supports_set_append_revisions_only(self):
1883
class BzrBranchFormat8(BranchFormatMetadir):
1884
"""Metadir format supporting storing locations of subtree branches."""
1886
def _branch_class(self):
1889
def get_format_string(self):
1890
"""See BranchFormat.get_format_string()."""
1891
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1893
def get_format_description(self):
1894
"""See BranchFormat.get_format_description()."""
1895
return "Branch format 8"
1897
def initialize(self, a_bzrdir):
1898
"""Create a branch of this format in a_bzrdir."""
1899
utf8_files = [('last-revision', '0 null:\n'),
1900
('branch.conf', ''),
1904
return self._initialize_helper(a_bzrdir, utf8_files)
1907
super(BzrBranchFormat8, self).__init__()
1908
self._matchingbzrdir.repository_format = \
1909
RepositoryFormatKnitPack5RichRoot()
1911
def make_tags(self, branch):
1912
"""See bzrlib.branch.BranchFormat.make_tags()."""
1913
return BasicTags(branch)
1915
def supports_set_append_revisions_only(self):
1918
def supports_stacking(self):
1921
supports_reference_locations = True
1924
class BzrBranchFormat7(BzrBranchFormat8):
1925
"""Branch format with last-revision, tags, and a stacked location pointer.
1927
The stacked location pointer is passed down to the repository and requires
1928
a repository format with supports_external_lookups = True.
1930
This format was introduced in bzr 1.6.
1933
def initialize(self, a_bzrdir):
1934
"""Create a branch of this format in a_bzrdir."""
1935
utf8_files = [('last-revision', '0 null:\n'),
1936
('branch.conf', ''),
1939
return self._initialize_helper(a_bzrdir, utf8_files)
1941
def _branch_class(self):
1944
def get_format_string(self):
1945
"""See BranchFormat.get_format_string()."""
1946
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
1948
def get_format_description(self):
1949
"""See BranchFormat.get_format_description()."""
1950
return "Branch format 7"
1952
def supports_set_append_revisions_only(self):
1955
supports_reference_locations = False
1176
1958
class BranchReferenceFormat(BranchFormat):
2054
network_format_registry = registry.FormatRegistry()
2055
"""Registry of formats indexed by their network name.
2057
The network name for a branch format is an identifier that can be used when
2058
referring to formats with smart server operations. See
2059
BranchFormat.network_name() for more detail.
1252
2063
# formats which have no format string are not discoverable
1253
2064
# and not independently creatable, so are not registered.
1254
2065
__format5 = BzrBranchFormat5()
1255
2066
__format6 = BzrBranchFormat6()
2067
__format7 = BzrBranchFormat7()
2068
__format8 = BzrBranchFormat8()
1256
2069
BranchFormat.register_format(__format5)
1257
2070
BranchFormat.register_format(BranchReferenceFormat())
1258
2071
BranchFormat.register_format(__format6)
1259
BranchFormat.set_default_format(__format6)
2072
BranchFormat.register_format(__format7)
2073
BranchFormat.register_format(__format8)
2074
BranchFormat.set_default_format(__format7)
1260
2075
_legacy_formats = [BzrBranchFormat4(),
1263
class BzrBranch(Branch):
2077
network_format_registry.register(
2078
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2081
class BzrBranch(Branch, _RelockDebugMixin):
1264
2082
"""A branch stored in the actual filesystem.
1266
2084
Note that it's "local" in the context of the filesystem; it doesn't
1267
2085
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1268
2086
it's writable, and can be accessed via the normal filesystem API.
2088
:ivar _transport: Transport for file operations on this branch's
2089
control files, typically pointing to the .bzr/branch directory.
2090
:ivar repository: Repository for this branch.
2091
:ivar base: The url of the base directory for this branch; the one
2092
containing the .bzr directory.
1271
2095
def __init__(self, _format=None,
1272
_control_files=None, a_bzrdir=None, _repository=None):
2096
_control_files=None, a_bzrdir=None, _repository=None,
2097
ignore_fallbacks=False):
1273
2098
"""Create new branch object at a particular location."""
1274
Branch.__init__(self)
1275
2099
if a_bzrdir is None:
1276
2100
raise ValueError('a_bzrdir must be supplied')
1278
2102
self.bzrdir = a_bzrdir
1279
# self._transport used to point to the directory containing the
1280
# control directory, but was not used - now it's just the transport
1281
# for the branch control files. mbp 20070212
1282
2103
self._base = self.bzrdir.transport.clone('..').base
2104
# XXX: We should be able to just do
2105
# self.base = self.bzrdir.root_transport.base
2106
# but this does not quite work yet -- mbp 20080522
1283
2107
self._format = _format
1284
2108
if _control_files is None:
1285
2109
raise ValueError('BzrBranch _control_files is None')
1286
2110
self.control_files = _control_files
1287
2111
self._transport = _control_files._transport
1288
2112
self.repository = _repository
2113
Branch.__init__(self)
1290
2115
def __str__(self):
1291
2116
return '%s(%r)' % (self.__class__.__name__, self.base)
1360
2199
This performs the actual writing to disk.
1361
2200
It is intended to be called by BzrBranch5.set_revision_history."""
1362
self.control_files.put_bytes(
1363
'revision-history', '\n'.join(history))
2201
self._transport.put_bytes(
2202
'revision-history', '\n'.join(history),
2203
mode=self.bzrdir._get_file_mode())
1365
2205
@needs_write_lock
1366
2206
def set_revision_history(self, rev_history):
1367
2207
"""See Branch.set_revision_history."""
1368
2208
if 'evil' in debug.debug_flags:
1369
2209
mutter_callsite(3, "set_revision_history scales with history.")
1370
self._clear_cached_state()
2210
check_not_reserved_id = _mod_revision.check_not_reserved_id
2211
for rev_id in rev_history:
2212
check_not_reserved_id(rev_id)
2213
if Branch.hooks['post_change_branch_tip']:
2214
# Don't calculate the last_revision_info() if there are no hooks
2216
old_revno, old_revid = self.last_revision_info()
2217
if len(rev_history) == 0:
2218
revid = _mod_revision.NULL_REVISION
2220
revid = rev_history[-1]
2221
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
1371
2222
self._write_revision_history(rev_history)
2223
self._clear_cached_state()
1372
2224
self._cache_revision_history(rev_history)
1373
2225
for hook in Branch.hooks['set_rh']:
1374
2226
hook(self, rev_history)
2227
if Branch.hooks['post_change_branch_tip']:
2228
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2230
def _synchronize_history(self, destination, revision_id):
2231
"""Synchronize last revision and revision history between branches.
2233
This version is most efficient when the destination is also a
2234
BzrBranch5, but works for BzrBranch6 as long as the revision
2235
history is the true lefthand parent history, and all of the revisions
2236
are in the destination's repository. If not, set_revision_history
2239
:param destination: The branch to copy the history into
2240
:param revision_id: The revision-id to truncate history at. May
2241
be None to copy complete history.
2243
if not isinstance(destination._format, BzrBranchFormat5):
2244
super(BzrBranch, self)._synchronize_history(
2245
destination, revision_id)
2247
if revision_id == _mod_revision.NULL_REVISION:
2250
new_history = self.revision_history()
2251
if revision_id is not None and new_history != []:
2253
new_history = new_history[:new_history.index(revision_id) + 1]
2255
rev = self.repository.get_revision(revision_id)
2256
new_history = rev.get_history(self.repository)[1:]
2257
destination.set_revision_history(new_history)
1376
2259
@needs_write_lock
1377
2260
def set_last_revision_info(self, revno, revision_id):
1433
2298
self.set_revision_history(self._lefthand_history(revision_id,
1434
2299
last_rev, other_branch))
1437
def update_revisions(self, other, stop_revision=None):
1438
"""See Branch.update_revisions."""
1441
if stop_revision is None:
1442
stop_revision = other.last_revision()
1443
if stop_revision is None:
1444
# if there are no commits, we're done.
1446
# whats the current last revision, before we fetch [and change it
1448
last_rev = _mod_revision.ensure_null(self.last_revision())
1449
# we fetch here so that we don't process data twice in the common
1450
# case of having something to pull, and so that the check for
1451
# already merged can operate on the just fetched graph, which will
1452
# be cached in memory.
1453
self.fetch(other, stop_revision)
1454
if self.repository.get_graph().is_ancestor(stop_revision,
1457
self.generate_revision_history(stop_revision, last_rev=last_rev,
1462
2301
def basis_tree(self):
1463
2302
"""See Branch.basis_tree."""
1464
2303
return self.repository.revision_tree(self.last_revision())
1467
def pull(self, source, overwrite=False, stop_revision=None,
1468
_hook_master=None, run_hooks=True, possible_transports=None):
1471
:param _hook_master: Private parameter - set the branch to
1472
be supplied as the master to push hooks.
1473
:param run_hooks: Private parameter - if false, this branch
1474
is being called because it's the master of the primary branch,
1475
so it should not run its hooks.
1477
result = PullResult()
1478
result.source_branch = source
1479
result.target_branch = self
1482
result.old_revno, result.old_revid = self.last_revision_info()
1484
self.update_revisions(source, stop_revision)
1485
except DivergedBranches:
1489
if stop_revision is None:
1490
stop_revision = source.last_revision()
1491
self.generate_revision_history(stop_revision)
1492
result.tag_conflicts = source.tags.merge_to(self.tags, overwrite)
1493
result.new_revno, result.new_revid = self.last_revision_info()
1495
result.master_branch = _hook_master
1496
result.local_branch = self
1498
result.master_branch = self
1499
result.local_branch = None
1501
for hook in Branch.hooks['post_pull']:
1507
2305
def _get_parent_location(self):
1508
2306
_locs = ['parent', 'pull', 'x-pull']
1509
2307
for l in _locs:
1511
return self.control_files.get(l).read().strip('\n')
2309
return self._transport.get_bytes(l).strip('\n')
2310
except errors.NoSuchFile:
1517
def push(self, target, overwrite=False, stop_revision=None,
1518
_override_hook_source_branch=None):
1521
This is the basic concrete implementation of push()
1523
:param _override_hook_source_branch: If specified, run
1524
the hooks passing this Branch as the source, rather than self.
1525
This is for use of RemoteBranch, where push is delegated to the
1526
underlying vfs-based Branch.
1528
# TODO: Public option to disable running hooks - should be trivial but
1532
result = self._push_with_bound_branches(target, overwrite,
1534
_override_hook_source_branch=_override_hook_source_branch)
1539
def _push_with_bound_branches(self, target, overwrite,
1541
_override_hook_source_branch=None):
1542
"""Push from self into target, and into target's master if any.
1544
This is on the base BzrBranch class even though it doesn't support
1545
bound branches because the *target* might be bound.
1548
if _override_hook_source_branch:
1549
result.source_branch = _override_hook_source_branch
1550
for hook in Branch.hooks['post_push']:
1553
bound_location = target.get_bound_location()
1554
if bound_location and target.base != bound_location:
1555
# there is a master branch.
1557
# XXX: Why the second check? Is it even supported for a branch to
1558
# be bound to itself? -- mbp 20070507
1559
master_branch = target.get_master_branch()
1560
master_branch.lock_write()
1562
# push into the master from this branch.
1563
self._basic_push(master_branch, overwrite, stop_revision)
1564
# and push into the target branch from this. Note that we push from
1565
# this branch again, because its considered the highest bandwidth
1567
result = self._basic_push(target, overwrite, stop_revision)
1568
result.master_branch = master_branch
1569
result.local_branch = target
1573
master_branch.unlock()
1576
result = self._basic_push(target, overwrite, stop_revision)
1577
# TODO: Why set master_branch and local_branch if there's no
1578
# binding? Maybe cleaner to just leave them unset? -- mbp
1580
result.master_branch = target
1581
result.local_branch = None
1585
2314
def _basic_push(self, target, overwrite, stop_revision):
1586
2315
"""Basic implementation of push without bound branches or hooks.
1588
Must be called with self read locked and target write locked.
2317
Must be called with source read locked and target write locked.
1590
result = PushResult()
2319
result = BranchPushResult()
1591
2320
result.source_branch = self
1592
2321
result.target_branch = target
1593
2322
result.old_revno, result.old_revid = target.last_revision_info()
1595
target.update_revisions(self, stop_revision)
1596
except DivergedBranches:
1600
target.set_revision_history(self.revision_history())
1601
result.tag_conflicts = self.tags.merge_to(target.tags, overwrite)
2323
self.update_references(target)
2324
if result.old_revid != self.last_revision():
2325
# We assume that during 'push' this repository is closer than
2327
graph = self.repository.get_graph(target.repository)
2328
target.update_revisions(self, stop_revision,
2329
overwrite=overwrite, graph=graph)
2330
if self._push_should_merge_tags():
2331
result.tag_conflicts = self.tags.merge_to(target.tags,
1602
2333
result.new_revno, result.new_revid = target.last_revision_info()
1605
def get_parent(self):
1606
"""See Branch.get_parent."""
1608
assert self.base[-1] == '/'
1609
parent = self._get_parent_location()
1612
# This is an old-format absolute path to a local branch
1613
# turn it into a url
1614
if parent.startswith('/'):
1615
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1617
return urlutils.join(self.base[:-1], parent)
1618
except errors.InvalidURLJoin, e:
1619
raise errors.InaccessibleParent(parent, self.base)
2336
def get_stacked_on_url(self):
2337
raise errors.UnstackableBranchFormat(self._format, self.base)
1621
2339
def set_push_location(self, location):
1622
2340
"""See Branch.set_push_location."""
1804
class BzrBranchExperimental(BzrBranch5):
1805
"""Bzr experimental branch format
1808
- a revision-history file.
1810
- a lock dir guarding the branch itself
1811
- all of this stored in a branch/ subdirectory
1812
- works with shared repositories.
1813
- a tag dictionary in the branch
1815
This format is new in bzr 0.15, but shouldn't be used for real data,
1818
This class acts as it's own BranchFormat.
1821
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1824
def get_format_string(cls):
1825
"""See BranchFormat.get_format_string()."""
1826
return "Bazaar-NG branch format experimental\n"
1829
def get_format_description(cls):
1830
"""See BranchFormat.get_format_description()."""
1831
return "Experimental branch format"
1834
def get_reference(cls, a_bzrdir):
1835
"""Get the target reference of the branch in a_bzrdir.
1837
format probing must have been completed before calling
1838
this method - it is assumed that the format of the branch
1839
in a_bzrdir is correct.
1841
:param a_bzrdir: The bzrdir to get the branch data from.
1842
:return: None if the branch is not a reference branch.
1847
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1849
branch_transport = a_bzrdir.get_branch_transport(cls)
1850
control_files = lockable_files.LockableFiles(branch_transport,
1851
lock_filename, lock_class)
1852
control_files.create_lock()
1853
control_files.lock_write()
2451
class BzrBranch8(BzrBranch5):
2452
"""A branch that stores tree-reference locations."""
2454
def _open_hook(self):
2455
if self._ignore_fallbacks:
1855
for filename, content in utf8_files:
1856
control_files.put_utf8(filename, content)
1858
control_files.unlock()
1861
def initialize(cls, a_bzrdir):
1862
"""Create a branch of this format in a_bzrdir."""
1863
utf8_files = [('format', cls.get_format_string()),
1864
('revision-history', ''),
1865
('branch-name', ''),
1868
cls._initialize_control_files(a_bzrdir, utf8_files,
1869
'lock', lockdir.LockDir)
1870
return cls.open(a_bzrdir, _found=True)
1873
def open(cls, a_bzrdir, _found=False):
1874
"""Return the branch object for a_bzrdir
1876
_found is a private parameter, do not use it. It is used to indicate
1877
if format probing has already be done.
1880
format = BranchFormat.find_format(a_bzrdir)
1881
assert format.__class__ == cls
1882
transport = a_bzrdir.get_branch_transport(None)
1883
control_files = lockable_files.LockableFiles(transport, 'lock',
1885
return cls(_format=cls,
1886
_control_files=control_files,
1888
_repository=a_bzrdir.find_repository())
1891
def is_supported(cls):
1894
def _make_tags(self):
1895
return BasicTags(self)
1898
def supports_tags(cls):
1902
BranchFormat.register_format(BzrBranchExperimental)
1905
class BzrBranch6(BzrBranch5):
1908
def last_revision_info(self):
1909
revision_string = self.control_files.get('last-revision').read()
2458
url = self.get_stacked_on_url()
2459
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2460
errors.UnstackableBranchFormat):
2463
for hook in Branch.hooks['transform_fallback_location']:
2464
url = hook(self, url)
2466
hook_name = Branch.hooks.get_hook_name(hook)
2467
raise AssertionError(
2468
"'transform_fallback_location' hook %s returned "
2469
"None, not a URL." % hook_name)
2470
self._activate_fallback_location(url)
2472
def __init__(self, *args, **kwargs):
2473
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2474
super(BzrBranch8, self).__init__(*args, **kwargs)
2475
self._last_revision_info_cache = None
2476
self._reference_info = None
2478
def _clear_cached_state(self):
2479
super(BzrBranch8, self)._clear_cached_state()
2480
self._last_revision_info_cache = None
2481
self._reference_info = None
2483
def _last_revision_info(self):
2484
revision_string = self._transport.get_bytes('last-revision')
1910
2485
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1911
2486
revision_id = cache_utf8.get_cached_utf8(revision_id)
1912
2487
revno = int(revno)
1913
2488
return revno, revision_id
1915
def last_revision(self):
1916
"""Return last revision id, or None"""
1917
revision_id = self.last_revision_info()[1]
1920
2490
def _write_last_revision_info(self, revno, revision_id):
1921
2491
"""Simply write out the revision id, with no checks.
1979
2565
"""Set the parent branch"""
1980
2566
return self._get_config_location('parent_location')
2569
def _set_all_reference_info(self, info_dict):
2570
"""Replace all reference info stored in a branch.
2572
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2575
writer = rio.RioWriter(s)
2576
for key, (tree_path, branch_location) in info_dict.iteritems():
2577
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2578
branch_location=branch_location)
2579
writer.write_stanza(stanza)
2580
self._transport.put_bytes('references', s.getvalue())
2581
self._reference_info = info_dict
2584
def _get_all_reference_info(self):
2585
"""Return all the reference info stored in a branch.
2587
:return: A dict of {file_id: (tree_path, branch_location)}
2589
if self._reference_info is not None:
2590
return self._reference_info
2591
rio_file = self._transport.get('references')
2593
stanzas = rio.read_stanzas(rio_file)
2594
info_dict = dict((s['file_id'], (s['tree_path'],
2595
s['branch_location'])) for s in stanzas)
2598
self._reference_info = info_dict
2601
def set_reference_info(self, file_id, tree_path, branch_location):
2602
"""Set the branch location to use for a tree reference.
2604
:param file_id: The file-id of the tree reference.
2605
:param tree_path: The path of the tree reference in the tree.
2606
:param branch_location: The location of the branch to retrieve tree
2609
info_dict = self._get_all_reference_info()
2610
info_dict[file_id] = (tree_path, branch_location)
2611
if None in (tree_path, branch_location):
2612
if tree_path is not None:
2613
raise ValueError('tree_path must be None when branch_location'
2615
if branch_location is not None:
2616
raise ValueError('branch_location must be None when tree_path'
2618
del info_dict[file_id]
2619
self._set_all_reference_info(info_dict)
2621
def get_reference_info(self, file_id):
2622
"""Get the tree_path and branch_location for a tree reference.
2624
:return: a tuple of (tree_path, branch_location)
2626
return self._get_all_reference_info().get(file_id, (None, None))
2628
def reference_parent(self, file_id, path, possible_transports=None):
2629
"""Return the parent branch for a tree-reference file_id.
2631
:param file_id: The file_id of the tree reference
2632
:param path: The path of the file_id in the tree
2633
:return: A branch associated with the file_id
2635
branch_location = self.get_reference_info(file_id)[1]
2636
if branch_location is None:
2637
return Branch.reference_parent(self, file_id, path,
2638
possible_transports)
2639
branch_location = urlutils.join(self.base, branch_location)
2640
return Branch.open(branch_location,
2641
possible_transports=possible_transports)
1982
2643
def set_push_location(self, location):
1983
2644
"""See Branch.set_push_location."""
1984
2645
self._set_config_location('push_location', location)
2017
2678
"""See Branch.get_old_bound_location"""
2018
2679
return self._get_bound_location(False)
2020
def set_append_revisions_only(self, enabled):
2025
self.get_config().set_user_option('append_revisions_only', value,
2681
def get_stacked_on_url(self):
2682
# you can always ask for the URL; but you might not be able to use it
2683
# if the repo can't support stacking.
2684
## self._check_stackable_repo()
2685
stacked_url = self._get_config_location('stacked_on_location')
2686
if stacked_url is None:
2687
raise errors.NotStacked(self)
2028
2690
def _get_append_revisions_only(self):
2029
2691
value = self.get_config().get_user_option('append_revisions_only')
2030
2692
return value == 'True'
2032
def _synchronize_history(self, destination, revision_id):
2033
"""Synchronize last revision and revision history between branches.
2035
This version is most efficient when the destination is also a
2036
BzrBranch6, but works for BzrBranch5, as long as the destination's
2037
repository contains all the lefthand ancestors of the intended
2038
last_revision. If not, set_last_revision_info will fail.
2040
:param destination: The branch to copy the history into
2041
:param revision_id: The revision-id to truncate history at. May
2042
be None to copy complete history.
2044
source_revno, source_revision_id = self.last_revision_info()
2045
if revision_id is None:
2046
revno, revision_id = source_revno, source_revision_id
2047
elif source_revision_id == revision_id:
2048
# we know the revno without needing to walk all of history
2049
revno = source_revno
2695
def generate_revision_history(self, revision_id, last_rev=None,
2697
"""See BzrBranch5.generate_revision_history"""
2698
history = self._lefthand_history(revision_id, last_rev, other_branch)
2699
revno = len(history)
2700
self.set_last_revision_info(revno, revision_id)
2703
def get_rev_id(self, revno, history=None):
2704
"""Find the revision id of the specified revno."""
2706
return _mod_revision.NULL_REVISION
2708
last_revno, last_revision_id = self.last_revision_info()
2709
if revno <= 0 or revno > last_revno:
2710
raise errors.NoSuchRevision(self, revno)
2712
if history is not None:
2713
return history[revno - 1]
2715
index = last_revno - revno
2716
if len(self._partial_revision_history_cache) <= index:
2717
self._extend_partial_history(stop_index=index)
2718
if len(self._partial_revision_history_cache) > index:
2719
return self._partial_revision_history_cache[index]
2051
# To figure out the revno for a random revision, we need to build
2052
# the revision history, and count its length.
2053
# We don't care about the order, just how long it is.
2054
# Alternatively, we could start at the current location, and count
2055
# backwards. But there is no guarantee that we will find it since
2056
# it may be a merged revision.
2057
revno = len(list(self.repository.iter_reverse_revision_history(
2059
destination.set_last_revision_info(revno, revision_id)
2061
def _make_tags(self):
2062
return BasicTags(self)
2721
raise errors.NoSuchRevision(self, revno)
2724
def revision_id_to_revno(self, revision_id):
2725
"""Given a revision id, return its revno"""
2726
if _mod_revision.is_null(revision_id):
2729
index = self._partial_revision_history_cache.index(revision_id)
2731
self._extend_partial_history(stop_revision=revision_id)
2732
index = len(self._partial_revision_history_cache) - 1
2733
if self._partial_revision_history_cache[index] != revision_id:
2734
raise errors.NoSuchRevision(self, revision_id)
2735
return self.revno() - index
2738
class BzrBranch7(BzrBranch8):
2739
"""A branch with support for a fallback repository."""
2741
def set_reference_info(self, file_id, tree_path, branch_location):
2742
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2744
def get_reference_info(self, file_id):
2745
Branch.get_reference_info(self, file_id)
2747
def reference_parent(self, file_id, path, possible_transports=None):
2748
return Branch.reference_parent(self, file_id, path,
2749
possible_transports)
2752
class BzrBranch6(BzrBranch7):
2753
"""See BzrBranchFormat6 for the capabilities of this branch.
2755
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2759
def get_stacked_on_url(self):
2760
raise errors.UnstackableBranchFormat(self._format, self.base)
2065
2763
######################################################################
2163
2874
new_branch.tags._set_tag_dict({})
2165
2876
# Copying done; now update target format
2166
new_branch.control_files.put_utf8('format',
2167
format.get_format_string())
2877
new_branch._transport.put_bytes('format',
2878
format.get_format_string(),
2879
mode=new_branch.bzrdir._get_file_mode())
2169
2881
# Clean up old files
2170
new_branch.control_files._transport.delete('revision-history')
2882
new_branch._transport.delete('revision-history')
2172
2884
branch.set_parent(None)
2885
except errors.NoSuchFile:
2175
2887
branch.set_bound_location(None)
2890
class Converter6to7(object):
2891
"""Perform an in-place upgrade of format 6 to format 7"""
2893
def convert(self, branch):
2894
format = BzrBranchFormat7()
2895
branch._set_config_location('stacked_on_location', '')
2896
# update target format
2897
branch._transport.put_bytes('format', format.get_format_string())
2900
class Converter7to8(object):
2901
"""Perform an in-place upgrade of format 6 to format 7"""
2903
def convert(self, branch):
2904
format = BzrBranchFormat8()
2905
branch._transport.put_bytes('references', '')
2906
# update target format
2907
branch._transport.put_bytes('format', format.get_format_string())
2910
def _run_with_write_locked_target(target, callable, *args, **kwargs):
2911
"""Run ``callable(*args, **kwargs)``, write-locking target for the
2914
_run_with_write_locked_target will attempt to release the lock it acquires.
2916
If an exception is raised by callable, then that exception *will* be
2917
propagated, even if the unlock attempt raises its own error. Thus
2918
_run_with_write_locked_target should be preferred to simply doing::
2922
return callable(*args, **kwargs)
2927
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
2928
# should share code?
2931
result = callable(*args, **kwargs)
2933
exc_info = sys.exc_info()
2937
raise exc_info[0], exc_info[1], exc_info[2]
2943
class InterBranch(InterObject):
2944
"""This class represents operations taking place between two branches.
2946
Its instances have methods like pull() and push() and contain
2947
references to the source and target repositories these operations
2948
can be carried out on.
2952
"""The available optimised InterBranch types."""
2955
def _get_branch_formats_to_test():
2956
"""Return a tuple with the Branch formats to use when testing."""
2957
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
2959
def pull(self, overwrite=False, stop_revision=None,
2960
possible_transports=None, local=False):
2961
"""Mirror source into target branch.
2963
The target branch is considered to be 'local', having low latency.
2965
:returns: PullResult instance
2967
raise NotImplementedError(self.pull)
2969
def update_revisions(self, stop_revision=None, overwrite=False,
2971
"""Pull in new perfect-fit revisions.
2973
:param stop_revision: Updated until the given revision
2974
:param overwrite: Always set the branch pointer, rather than checking
2975
to see if it is a proper descendant.
2976
:param graph: A Graph object that can be used to query history
2977
information. This can be None.
2980
raise NotImplementedError(self.update_revisions)
2982
def push(self, overwrite=False, stop_revision=None,
2983
_override_hook_source_branch=None):
2984
"""Mirror the source branch into the target branch.
2986
The source branch is considered to be 'local', having low latency.
2988
raise NotImplementedError(self.push)
2991
class GenericInterBranch(InterBranch):
2992
"""InterBranch implementation that uses public Branch functions.
2996
def _get_branch_formats_to_test():
2997
return BranchFormat._default_format, BranchFormat._default_format
2999
def update_revisions(self, stop_revision=None, overwrite=False,
3001
"""See InterBranch.update_revisions()."""
3002
self.source.lock_read()
3004
other_revno, other_last_revision = self.source.last_revision_info()
3005
stop_revno = None # unknown
3006
if stop_revision is None:
3007
stop_revision = other_last_revision
3008
if _mod_revision.is_null(stop_revision):
3009
# if there are no commits, we're done.
3011
stop_revno = other_revno
3013
# what's the current last revision, before we fetch [and change it
3015
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3016
# we fetch here so that we don't process data twice in the common
3017
# case of having something to pull, and so that the check for
3018
# already merged can operate on the just fetched graph, which will
3019
# be cached in memory.
3020
self.target.fetch(self.source, stop_revision)
3021
# Check to see if one is an ancestor of the other
3024
graph = self.target.repository.get_graph()
3025
if self.target._check_if_descendant_or_diverged(
3026
stop_revision, last_rev, graph, self.source):
3027
# stop_revision is a descendant of last_rev, but we aren't
3028
# overwriting, so we're done.
3030
if stop_revno is None:
3032
graph = self.target.repository.get_graph()
3033
this_revno, this_last_revision = \
3034
self.target.last_revision_info()
3035
stop_revno = graph.find_distance_to_null(stop_revision,
3036
[(other_last_revision, other_revno),
3037
(this_last_revision, this_revno)])
3038
self.target.set_last_revision_info(stop_revno, stop_revision)
3040
self.source.unlock()
3042
def pull(self, overwrite=False, stop_revision=None,
3043
possible_transports=None, _hook_master=None, run_hooks=True,
3044
_override_hook_target=None, local=False):
3047
:param _hook_master: Private parameter - set the branch to
3048
be supplied as the master to pull hooks.
3049
:param run_hooks: Private parameter - if false, this branch
3050
is being called because it's the master of the primary branch,
3051
so it should not run its hooks.
3052
:param _override_hook_target: Private parameter - set the branch to be
3053
supplied as the target_branch to pull hooks.
3054
:param local: Only update the local branch, and not the bound branch.
3056
# This type of branch can't be bound.
3058
raise errors.LocalRequiresBoundBranch()
3059
result = PullResult()
3060
result.source_branch = self.source
3061
if _override_hook_target is None:
3062
result.target_branch = self.target
3064
result.target_branch = _override_hook_target
3065
self.source.lock_read()
3067
# We assume that during 'pull' the target repository is closer than
3069
self.source.update_references(self.target)
3070
graph = self.target.repository.get_graph(self.source.repository)
3071
# TODO: Branch formats should have a flag that indicates
3072
# that revno's are expensive, and pull() should honor that flag.
3074
result.old_revno, result.old_revid = \
3075
self.target.last_revision_info()
3076
self.target.update_revisions(self.source, stop_revision,
3077
overwrite=overwrite, graph=graph)
3078
# TODO: The old revid should be specified when merging tags,
3079
# so a tags implementation that versions tags can only
3080
# pull in the most recent changes. -- JRV20090506
3081
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3083
result.new_revno, result.new_revid = self.target.last_revision_info()
3085
result.master_branch = _hook_master
3086
result.local_branch = result.target_branch
3088
result.master_branch = result.target_branch
3089
result.local_branch = None
3091
for hook in Branch.hooks['post_pull']:
3094
self.source.unlock()
3097
def push(self, overwrite=False, stop_revision=None,
3098
_override_hook_source_branch=None):
3099
"""See InterBranch.push.
3101
This is the basic concrete implementation of push()
3103
:param _override_hook_source_branch: If specified, run
3104
the hooks passing this Branch as the source, rather than self.
3105
This is for use of RemoteBranch, where push is delegated to the
3106
underlying vfs-based Branch.
3108
# TODO: Public option to disable running hooks - should be trivial but
3110
self.source.lock_read()
3112
return _run_with_write_locked_target(
3113
self.target, self._push_with_bound_branches, overwrite,
3115
_override_hook_source_branch=_override_hook_source_branch)
3117
self.source.unlock()
3119
def _push_with_bound_branches(self, overwrite, stop_revision,
3120
_override_hook_source_branch=None):
3121
"""Push from source into target, and into target's master if any.
3124
if _override_hook_source_branch:
3125
result.source_branch = _override_hook_source_branch
3126
for hook in Branch.hooks['post_push']:
3129
bound_location = self.target.get_bound_location()
3130
if bound_location and self.target.base != bound_location:
3131
# there is a master branch.
3133
# XXX: Why the second check? Is it even supported for a branch to
3134
# be bound to itself? -- mbp 20070507
3135
master_branch = self.target.get_master_branch()
3136
master_branch.lock_write()
3138
# push into the master from the source branch.
3139
self.source._basic_push(master_branch, overwrite, stop_revision)
3140
# and push into the target branch from the source. Note that we
3141
# push from the source branch again, because its considered the
3142
# highest bandwidth repository.
3143
result = self.source._basic_push(self.target, overwrite,
3145
result.master_branch = master_branch
3146
result.local_branch = self.target
3150
master_branch.unlock()
3153
result = self.source._basic_push(self.target, overwrite,
3155
# TODO: Why set master_branch and local_branch if there's no
3156
# binding? Maybe cleaner to just leave them unset? -- mbp
3158
result.master_branch = self.target
3159
result.local_branch = None
3164
def is_compatible(self, source, target):
3165
# GenericBranch uses the public API, so always compatible
3169
class InterToBranch5(GenericInterBranch):
3172
def _get_branch_formats_to_test():
3173
return BranchFormat._default_format, BzrBranchFormat5()
3175
def pull(self, overwrite=False, stop_revision=None,
3176
possible_transports=None, run_hooks=True,
3177
_override_hook_target=None, local=False):
3178
"""Pull from source into self, updating my master if any.
3180
:param run_hooks: Private parameter - if false, this branch
3181
is being called because it's the master of the primary branch,
3182
so it should not run its hooks.
3184
bound_location = self.target.get_bound_location()
3185
if local and not bound_location:
3186
raise errors.LocalRequiresBoundBranch()
3187
master_branch = None
3188
if not local and bound_location and self.source.base != bound_location:
3189
# not pulling from master, so we need to update master.
3190
master_branch = self.target.get_master_branch(possible_transports)
3191
master_branch.lock_write()
3194
# pull from source into master.
3195
master_branch.pull(self.source, overwrite, stop_revision,
3197
return super(InterToBranch5, self).pull(overwrite,
3198
stop_revision, _hook_master=master_branch,
3199
run_hooks=run_hooks,
3200
_override_hook_target=_override_hook_target)
3203
master_branch.unlock()
3206
InterBranch.register_optimiser(GenericInterBranch)
3207
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
