782
820
old_repository = self.repository
783
821
if len(old_repository._fallback_repositories) != 1:
784
822
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
823
"of %r (fallbacks: %r)" % (old_repository,
824
old_repository._fallback_repositories))
825
# Open the new repository object.
826
# Repositories don't offer an interface to remove fallback
827
# repositories today; take the conceptually simpler option and just
828
# reopen it. We reopen it starting from the URL so that we
829
# get a separate connection for RemoteRepositories and can
830
# stream from one of them to the other. This does mean doing
831
# separate SSH connection setup, but unstacking is not a
832
# common operation so it's tolerable.
833
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
834
new_repository = new_bzrdir.find_repository()
835
if new_repository._fallback_repositories:
836
raise AssertionError("didn't expect %r to have "
837
"fallback_repositories"
838
% (self.repository,))
839
# Replace self.repository with the new repository.
840
# Do our best to transfer the lock state (i.e. lock-tokens and
841
# lock count) of self.repository to the new repository.
842
lock_token = old_repository.lock_write().repository_token
843
self.repository = new_repository
844
if isinstance(self, remote.RemoteBranch):
845
# Remote branches can have a second reference to the old
846
# repository that need to be replaced.
847
if self._real_branch is not None:
848
self._real_branch.repository = new_repository
849
self.repository.lock_write(token=lock_token)
850
if lock_token is not None:
851
old_repository.leave_lock_in_place()
787
852
old_repository.unlock()
853
if lock_token is not None:
854
# XXX: self.repository.leave_lock_in_place() before this
855
# function will not be preserved. Fortunately that doesn't
856
# affect the current default format (2a), and would be a
857
# corner-case anyway.
858
# - Andrew Bennetts, 2010/06/30
859
self.repository.dont_leave_lock_in_place()
863
old_repository.unlock()
864
except errors.LockNotHeld:
867
if old_lock_count == 0:
868
raise AssertionError(
869
'old_repository should have been locked at least once.')
870
for i in range(old_lock_count-1):
871
self.repository.lock_write()
872
# Fetch from the old repository into the new.
788
873
old_repository.lock_read()
790
# Repositories don't offer an interface to remove fallback
791
# repositories today; take the conceptually simpler option and just
792
# reopen it. We reopen it starting from the URL so that we
793
# get a separate connection for RemoteRepositories and can
794
# stream from one of them to the other. This does mean doing
795
# separate SSH connection setup, but unstacking is not a
796
# common operation so it's tolerable.
797
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
798
new_repository = new_bzrdir.find_repository()
799
self.repository = new_repository
800
if self.repository._fallback_repositories:
801
raise AssertionError("didn't expect %r to have "
802
"fallback_repositories"
803
% (self.repository,))
804
# this is not paired with an unlock because it's just restoring
805
# the previous state; the lock's released when set_stacked_on_url
807
self.repository.lock_write()
808
875
# XXX: If you unstack a branch while it has a working tree
809
876
# with a pending merge, the pending-merged revisions will no
810
877
# longer be present. You can (probably) revert and remerge.
812
# XXX: This only fetches up to the tip of the repository; it
813
# doesn't bring across any tags. That's fairly consistent
814
# with how branch works, but perhaps not ideal.
815
self.repository.fetch(old_repository,
816
revision_id=self.last_revision(),
879
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
880
except errors.TagsNotSupported:
881
tags_to_fetch = set()
882
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
883
old_repository, required_ids=[self.last_revision()],
884
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
885
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
819
887
old_repository.unlock()
2246
2378
BranchFormat.network_name() for more detail.
2381
format_registry = BranchFormatRegistry(network_format_registry)
2250
2384
# formats which have no format string are not discoverable
2251
2385
# and not independently creatable, so are not registered.
2386
__format4 = BzrBranchFormat4()
2252
2387
__format5 = BzrBranchFormat5()
2253
2388
__format6 = BzrBranchFormat6()
2254
2389
__format7 = BzrBranchFormat7()
2255
2390
__format8 = BzrBranchFormat8()
2256
BranchFormat.register_format(__format5)
2257
BranchFormat.register_format(BranchReferenceFormat())
2258
BranchFormat.register_format(__format6)
2259
BranchFormat.register_format(__format7)
2260
BranchFormat.register_format(__format8)
2261
BranchFormat.set_default_format(__format7)
2262
_legacy_formats = [BzrBranchFormat4(),
2264
network_format_registry.register(
2265
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2391
format_registry.register(__format5)
2392
format_registry.register(BranchReferenceFormat())
2393
format_registry.register(__format6)
2394
format_registry.register(__format7)
2395
format_registry.register(__format8)
2396
format_registry.set_default(__format7)
2397
format_registry.register_extra(__format4)
2398
network_format_registry.register(__format4.network_name(), __format4)
2401
class BranchWriteLockResult(LogicalLockResult):
2402
"""The result of write locking a branch.
2404
:ivar branch_token: The token obtained from the underlying branch lock, or
2406
:ivar unlock: A callable which will unlock the lock.
2409
def __init__(self, unlock, branch_token):
2410
LogicalLockResult.__init__(self, unlock)
2411
self.branch_token = branch_token
2414
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2268
2418
class BzrBranch(Branch, _RelockDebugMixin):
3182
3375
raise NotImplementedError(self.push)
3378
def copy_content_into(self, revision_id=None):
3379
"""Copy the content of source into target
3381
revision_id: if not None, the revision history in the new branch will
3382
be truncated to end with revision_id.
3384
raise NotImplementedError(self.copy_content_into)
3185
3387
class GenericInterBranch(InterBranch):
3186
"""InterBranch implementation that uses public Branch functions.
3190
def _get_branch_formats_to_test():
3191
return BranchFormat._default_format, BranchFormat._default_format
3388
"""InterBranch implementation that uses public Branch functions."""
3391
def is_compatible(klass, source, target):
3392
# GenericBranch uses the public API, so always compatible
3396
def _get_branch_formats_to_test(klass):
3397
return [(format_registry.get_default(), format_registry.get_default())]
3400
def unwrap_format(klass, format):
3401
if isinstance(format, remote.RemoteBranchFormat):
3402
format._ensure_real()
3403
return format._custom_format
3407
def copy_content_into(self, revision_id=None):
3408
"""Copy the content of source into target
3410
revision_id: if not None, the revision history in the new branch will
3411
be truncated to end with revision_id.
3413
self.source.update_references(self.target)
3414
self.source._synchronize_history(self.target, revision_id)
3416
parent = self.source.get_parent()
3417
except errors.InaccessibleParent, e:
3418
mutter('parent was not accessible to copy: %s', e)
3421
self.target.set_parent(parent)
3422
if self.source._push_should_merge_tags():
3423
self.source.tags.merge_to(self.target.tags)
3193
3426
def update_revisions(self, stop_revision=None, overwrite=False,
3427
graph=None, fetch_tags=True):
3195
3428
"""See InterBranch.update_revisions()."""
3196
self.source.lock_read()
3198
other_revno, other_last_revision = self.source.last_revision_info()
3199
stop_revno = None # unknown
3200
if stop_revision is None:
3201
stop_revision = other_last_revision
3202
if _mod_revision.is_null(stop_revision):
3203
# if there are no commits, we're done.
3205
stop_revno = other_revno
3207
# what's the current last revision, before we fetch [and change it
3209
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3210
# we fetch here so that we don't process data twice in the common
3211
# case of having something to pull, and so that the check for
3212
# already merged can operate on the just fetched graph, which will
3213
# be cached in memory.
3214
self.target.fetch(self.source, stop_revision)
3215
# Check to see if one is an ancestor of the other
3218
graph = self.target.repository.get_graph()
3219
if self.target._check_if_descendant_or_diverged(
3220
stop_revision, last_rev, graph, self.source):
3221
# stop_revision is a descendant of last_rev, but we aren't
3222
# overwriting, so we're done.
3224
if stop_revno is None:
3226
graph = self.target.repository.get_graph()
3227
this_revno, this_last_revision = \
3228
self.target.last_revision_info()
3229
stop_revno = graph.find_distance_to_null(stop_revision,
3230
[(other_last_revision, other_revno),
3231
(this_last_revision, this_revno)])
3232
self.target.set_last_revision_info(stop_revno, stop_revision)
3234
self.source.unlock()
3429
other_revno, other_last_revision = self.source.last_revision_info()
3430
stop_revno = None # unknown
3431
if stop_revision is None:
3432
stop_revision = other_last_revision
3433
if _mod_revision.is_null(stop_revision):
3434
# if there are no commits, we're done.
3436
stop_revno = other_revno
3438
# what's the current last revision, before we fetch [and change it
3440
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3441
# we fetch here so that we don't process data twice in the common
3442
# case of having something to pull, and so that the check for
3443
# already merged can operate on the just fetched graph, which will
3444
# be cached in memory.
3446
fetch_spec_factory = fetch.FetchSpecFactory()
3447
fetch_spec_factory.source_branch = self.source
3448
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3449
fetch_spec_factory.source_repo = self.source.repository
3450
fetch_spec_factory.target_repo = self.target.repository
3451
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3452
fetch_spec = fetch_spec_factory.make_fetch_spec()
3454
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3455
self.source.repository, revision_ids=[stop_revision]).execute()
3456
self.target.fetch(self.source, fetch_spec=fetch_spec)
3457
# Check to see if one is an ancestor of the other
3460
graph = self.target.repository.get_graph()
3461
if self.target._check_if_descendant_or_diverged(
3462
stop_revision, last_rev, graph, self.source):
3463
# stop_revision is a descendant of last_rev, but we aren't
3464
# overwriting, so we're done.
3466
if stop_revno is None:
3468
graph = self.target.repository.get_graph()
3469
this_revno, this_last_revision = \
3470
self.target.last_revision_info()
3471
stop_revno = graph.find_distance_to_null(stop_revision,
3472
[(other_last_revision, other_revno),
3473
(this_last_revision, this_revno)])
3474
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3477
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3478
possible_transports=None, run_hooks=True,
3238
3479
_override_hook_target=None, local=False):
3480
"""Pull from source into self, updating my master if any.
3241
:param _hook_master: Private parameter - set the branch to
3242
be supplied as the master to pull hooks.
3243
3482
:param run_hooks: Private parameter - if false, this branch
3244
3483
is being called because it's the master of the primary branch,
3245
3484
so it should not run its hooks.
3246
:param _override_hook_target: Private parameter - set the branch to be
3247
supplied as the target_branch to pull hooks.
3248
:param local: Only update the local branch, and not the bound branch.
3250
# This type of branch can't be bound.
3486
bound_location = self.target.get_bound_location()
3487
if local and not bound_location:
3252
3488
raise errors.LocalRequiresBoundBranch()
3253
result = PullResult()
3254
result.source_branch = self.source
3255
if _override_hook_target is None:
3256
result.target_branch = self.target
3258
result.target_branch = _override_hook_target
3259
self.source.lock_read()
3489
master_branch = None
3490
source_is_master = (self.source.user_url == bound_location)
3491
if not local and bound_location and not source_is_master:
3492
# not pulling from master, so we need to update master.
3493
master_branch = self.target.get_master_branch(possible_transports)
3494
master_branch.lock_write()
3261
# We assume that during 'pull' the target repository is closer than
3263
self.source.update_references(self.target)
3264
graph = self.target.repository.get_graph(self.source.repository)
3265
# TODO: Branch formats should have a flag that indicates
3266
# that revno's are expensive, and pull() should honor that flag.
3268
result.old_revno, result.old_revid = \
3269
self.target.last_revision_info()
3270
self.target.update_revisions(self.source, stop_revision,
3271
overwrite=overwrite, graph=graph)
3272
# TODO: The old revid should be specified when merging tags,
3273
# so a tags implementation that versions tags can only
3274
# pull in the most recent changes. -- JRV20090506
3275
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3277
result.new_revno, result.new_revid = self.target.last_revision_info()
3279
result.master_branch = _hook_master
3280
result.local_branch = result.target_branch
3282
result.master_branch = result.target_branch
3283
result.local_branch = None
3285
for hook in Branch.hooks['post_pull']:
3497
# pull from source into master.
3498
master_branch.pull(self.source, overwrite, stop_revision,
3500
return self._pull(overwrite,
3501
stop_revision, _hook_master=master_branch,
3502
run_hooks=run_hooks,
3503
_override_hook_target=_override_hook_target,
3504
merge_tags_to_master=not source_is_master)
3288
self.source.unlock()
3507
master_branch.unlock()
3291
3509
def push(self, overwrite=False, stop_revision=None,
3292
3510
_override_hook_source_branch=None):
3358
def is_compatible(self, source, target):
3359
# GenericBranch uses the public API, so always compatible
3363
class InterToBranch5(GenericInterBranch):
3366
def _get_branch_formats_to_test():
3367
return BranchFormat._default_format, BzrBranchFormat5()
3369
def pull(self, overwrite=False, stop_revision=None,
3370
possible_transports=None, run_hooks=True,
3371
_override_hook_target=None, local=False):
3372
"""Pull from source into self, updating my master if any.
3575
def _pull(self, overwrite=False, stop_revision=None,
3576
possible_transports=None, _hook_master=None, run_hooks=True,
3577
_override_hook_target=None, local=False,
3578
merge_tags_to_master=True):
3581
This function is the core worker, used by GenericInterBranch.pull to
3582
avoid duplication when pulling source->master and source->local.
3584
:param _hook_master: Private parameter - set the branch to
3585
be supplied as the master to pull hooks.
3374
3586
:param run_hooks: Private parameter - if false, this branch
3375
3587
is being called because it's the master of the primary branch,
3376
3588
so it should not run its hooks.
3589
is being called because it's the master of the primary branch,
3590
so it should not run its hooks.
3591
:param _override_hook_target: Private parameter - set the branch to be
3592
supplied as the target_branch to pull hooks.
3593
:param local: Only update the local branch, and not the bound branch.
3378
bound_location = self.target.get_bound_location()
3379
if local and not bound_location:
3595
# This type of branch can't be bound.
3380
3597
raise errors.LocalRequiresBoundBranch()
3381
master_branch = None
3382
if not local and bound_location and self.source.user_url != bound_location:
3383
# not pulling from master, so we need to update master.
3384
master_branch = self.target.get_master_branch(possible_transports)
3385
master_branch.lock_write()
3598
result = PullResult()
3599
result.source_branch = self.source
3600
if _override_hook_target is None:
3601
result.target_branch = self.target
3603
result.target_branch = _override_hook_target
3604
self.source.lock_read()
3388
# pull from source into master.
3389
master_branch.pull(self.source, overwrite, stop_revision,
3391
return super(InterToBranch5, self).pull(overwrite,
3392
stop_revision, _hook_master=master_branch,
3393
run_hooks=run_hooks,
3394
_override_hook_target=_override_hook_target)
3606
# We assume that during 'pull' the target repository is closer than
3608
self.source.update_references(self.target)
3609
graph = self.target.repository.get_graph(self.source.repository)
3610
# TODO: Branch formats should have a flag that indicates
3611
# that revno's are expensive, and pull() should honor that flag.
3613
result.old_revno, result.old_revid = \
3614
self.target.last_revision_info()
3615
self.target.update_revisions(self.source, stop_revision,
3616
overwrite=overwrite, graph=graph)
3617
# TODO: The old revid should be specified when merging tags,
3618
# so a tags implementation that versions tags can only
3619
# pull in the most recent changes. -- JRV20090506
3620
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3621
overwrite, ignore_master=not merge_tags_to_master)
3622
result.new_revno, result.new_revid = self.target.last_revision_info()
3624
result.master_branch = _hook_master
3625
result.local_branch = result.target_branch
3627
result.master_branch = result.target_branch
3628
result.local_branch = None
3630
for hook in Branch.hooks['post_pull']:
3397
master_branch.unlock()
3633
self.source.unlock()
3400
3637
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)