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
2398
BranchFormat.network_name() for more detail.
2401
format_registry = BranchFormatRegistry(network_format_registry)
2250
2404
# formats which have no format string are not discoverable
2251
2405
# and not independently creatable, so are not registered.
2406
__format4 = BzrBranchFormat4()
2252
2407
__format5 = BzrBranchFormat5()
2253
2408
__format6 = BzrBranchFormat6()
2254
2409
__format7 = BzrBranchFormat7()
2255
2410
__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__)
2411
format_registry.register(__format5)
2412
format_registry.register(BranchReferenceFormat())
2413
format_registry.register(__format6)
2414
format_registry.register(__format7)
2415
format_registry.register(__format8)
2416
format_registry.set_default(__format7)
2417
format_registry.register_extra(__format4)
2418
network_format_registry.register(__format4.network_name(), __format4)
2421
class BranchWriteLockResult(LogicalLockResult):
2422
"""The result of write locking a branch.
2424
:ivar branch_token: The token obtained from the underlying branch lock, or
2426
:ivar unlock: A callable which will unlock the lock.
2429
def __init__(self, unlock, branch_token):
2430
LogicalLockResult.__init__(self, unlock)
2431
self.branch_token = branch_token
2434
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2268
2438
class BzrBranch(Branch, _RelockDebugMixin):
3182
3398
raise NotImplementedError(self.push)
3401
def copy_content_into(self, revision_id=None):
3402
"""Copy the content of source into target
3404
revision_id: if not None, the revision history in the new branch will
3405
be truncated to end with revision_id.
3407
raise NotImplementedError(self.copy_content_into)
3185
3410
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
3411
"""InterBranch implementation that uses public Branch functions."""
3414
def is_compatible(klass, source, target):
3415
# GenericBranch uses the public API, so always compatible
3419
def _get_branch_formats_to_test(klass):
3420
return [(format_registry.get_default(), format_registry.get_default())]
3423
def unwrap_format(klass, format):
3424
if isinstance(format, remote.RemoteBranchFormat):
3425
format._ensure_real()
3426
return format._custom_format
3430
def copy_content_into(self, revision_id=None):
3431
"""Copy the content of source into target
3433
revision_id: if not None, the revision history in the new branch will
3434
be truncated to end with revision_id.
3436
self.source.update_references(self.target)
3437
self.source._synchronize_history(self.target, revision_id)
3439
parent = self.source.get_parent()
3440
except errors.InaccessibleParent, e:
3441
mutter('parent was not accessible to copy: %s', e)
3444
self.target.set_parent(parent)
3445
if self.source._push_should_merge_tags():
3446
self.source.tags.merge_to(self.target.tags)
3193
3449
def update_revisions(self, stop_revision=None, overwrite=False,
3450
graph=None, fetch_tags=True):
3195
3451
"""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()
3452
other_revno, other_last_revision = self.source.last_revision_info()
3453
stop_revno = None # unknown
3454
if stop_revision is None:
3455
stop_revision = other_last_revision
3456
if _mod_revision.is_null(stop_revision):
3457
# if there are no commits, we're done.
3459
stop_revno = other_revno
3461
# what's the current last revision, before we fetch [and change it
3463
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3464
# we fetch here so that we don't process data twice in the common
3465
# case of having something to pull, and so that the check for
3466
# already merged can operate on the just fetched graph, which will
3467
# be cached in memory.
3469
fetch_spec_factory = fetch.FetchSpecFactory()
3470
fetch_spec_factory.source_branch = self.source
3471
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3472
fetch_spec_factory.source_repo = self.source.repository
3473
fetch_spec_factory.target_repo = self.target.repository
3474
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3475
fetch_spec = fetch_spec_factory.make_fetch_spec()
3477
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3478
self.source.repository, revision_ids=[stop_revision]).execute()
3479
self.target.fetch(self.source, fetch_spec=fetch_spec)
3480
# Check to see if one is an ancestor of the other
3483
graph = self.target.repository.get_graph()
3484
if self.target._check_if_descendant_or_diverged(
3485
stop_revision, last_rev, graph, self.source):
3486
# stop_revision is a descendant of last_rev, but we aren't
3487
# overwriting, so we're done.
3489
if stop_revno is None:
3491
graph = self.target.repository.get_graph()
3492
this_revno, this_last_revision = \
3493
self.target.last_revision_info()
3494
stop_revno = graph.find_distance_to_null(stop_revision,
3495
[(other_last_revision, other_revno),
3496
(this_last_revision, this_revno)])
3497
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3500
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3501
possible_transports=None, run_hooks=True,
3238
3502
_override_hook_target=None, local=False):
3503
"""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
3505
:param run_hooks: Private parameter - if false, this branch
3244
3506
is being called because it's the master of the primary branch,
3245
3507
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.
3509
bound_location = self.target.get_bound_location()
3510
if local and not bound_location:
3252
3511
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()
3512
master_branch = None
3513
source_is_master = (self.source.user_url == bound_location)
3514
if not local and bound_location and not source_is_master:
3515
# not pulling from master, so we need to update master.
3516
master_branch = self.target.get_master_branch(possible_transports)
3517
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']:
3520
# pull from source into master.
3521
master_branch.pull(self.source, overwrite, stop_revision,
3523
return self._pull(overwrite,
3524
stop_revision, _hook_master=master_branch,
3525
run_hooks=run_hooks,
3526
_override_hook_target=_override_hook_target,
3527
merge_tags_to_master=not source_is_master)
3288
self.source.unlock()
3530
master_branch.unlock()
3291
3532
def push(self, overwrite=False, stop_revision=None,
3292
3533
_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.
3598
def _pull(self, overwrite=False, stop_revision=None,
3599
possible_transports=None, _hook_master=None, run_hooks=True,
3600
_override_hook_target=None, local=False,
3601
merge_tags_to_master=True):
3604
This function is the core worker, used by GenericInterBranch.pull to
3605
avoid duplication when pulling source->master and source->local.
3607
:param _hook_master: Private parameter - set the branch to
3608
be supplied as the master to pull hooks.
3374
3609
:param run_hooks: Private parameter - if false, this branch
3375
3610
is being called because it's the master of the primary branch,
3376
3611
so it should not run its hooks.
3612
is being called because it's the master of the primary branch,
3613
so it should not run its hooks.
3614
:param _override_hook_target: Private parameter - set the branch to be
3615
supplied as the target_branch to pull hooks.
3616
: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:
3618
# This type of branch can't be bound.
3380
3620
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()
3621
result = PullResult()
3622
result.source_branch = self.source
3623
if _override_hook_target is None:
3624
result.target_branch = self.target
3626
result.target_branch = _override_hook_target
3627
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)
3629
# We assume that during 'pull' the target repository is closer than
3631
self.source.update_references(self.target)
3632
graph = self.target.repository.get_graph(self.source.repository)
3633
# TODO: Branch formats should have a flag that indicates
3634
# that revno's are expensive, and pull() should honor that flag.
3636
result.old_revno, result.old_revid = \
3637
self.target.last_revision_info()
3638
self.target.update_revisions(self.source, stop_revision,
3639
overwrite=overwrite, graph=graph)
3640
# TODO: The old revid should be specified when merging tags,
3641
# so a tags implementation that versions tags can only
3642
# pull in the most recent changes. -- JRV20090506
3643
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3644
overwrite, ignore_master=not merge_tags_to_master)
3645
result.new_revno, result.new_revid = self.target.last_revision_info()
3647
result.master_branch = _hook_master
3648
result.local_branch = result.target_branch
3650
result.master_branch = result.target_branch
3651
result.local_branch = None
3653
for hook in Branch.hooks['post_pull']:
3397
master_branch.unlock()
3656
self.source.unlock()
3400
3660
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)