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()
2359
class BranchFormatRegistry(registry.FormatRegistry):
2360
"""Branch format registry."""
2362
def __init__(self, other_registry=None):
2363
super(BranchFormatRegistry, self).__init__(other_registry)
2364
self._default_format = None
2365
self._extra_formats = []
2367
def register(self, format):
2368
"""Register a new branch format."""
2369
super(BranchFormatRegistry, self).register(
2370
format.get_format_string(), format)
2372
def remove(self, format):
2373
"""Remove a registered branch format."""
2374
super(BranchFormatRegistry, self).remove(
2375
format.get_format_string())
2377
def register_extra(self, format):
2378
"""Register a branch format that can not be part of a metadir.
2380
This is mainly useful to allow custom branch formats, such as
2381
older Bazaar formats and foreign formats, to be tested
2383
self._extra_formats.append(registry._ObjectGetter(format))
2384
network_format_registry.register(
2385
format.network_name(), format.__class__)
2387
def register_extra_lazy(self, module_name, member_name):
2388
"""Register a branch format lazily.
2390
self._extra_formats.append(
2391
registry._LazyObjectGetter(module_name, member_name))
2394
def unregister_extra(self, format):
2395
self._extra_formats.remove(registry._ObjectGetter(format))
2399
for name, fmt in self.iteritems():
2403
for objgetter in self._extra_formats:
2404
fmt = objgetter.get_obj()
2410
def set_default(self, format):
2411
self._default_format = format
2413
def get_default(self):
2414
return self._default_format
2241
2417
network_format_registry = registry.FormatRegistry()
2242
2418
"""Registry of formats indexed by their network name.
3182
3417
raise NotImplementedError(self.push)
3420
def copy_content_into(self, revision_id=None):
3421
"""Copy the content of source into target
3423
revision_id: if not None, the revision history in the new branch will
3424
be truncated to end with revision_id.
3426
raise NotImplementedError(self.copy_content_into)
3185
3429
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
3430
"""InterBranch implementation that uses public Branch functions."""
3433
def is_compatible(klass, source, target):
3434
# GenericBranch uses the public API, so always compatible
3438
def _get_branch_formats_to_test(klass):
3439
return [(format_registry.get_default(), format_registry.get_default())]
3442
def unwrap_format(klass, format):
3443
if isinstance(format, remote.RemoteBranchFormat):
3444
format._ensure_real()
3445
return format._custom_format
3449
def copy_content_into(self, revision_id=None):
3450
"""Copy the content of source into target
3452
revision_id: if not None, the revision history in the new branch will
3453
be truncated to end with revision_id.
3455
self.source.update_references(self.target)
3456
self.source._synchronize_history(self.target, revision_id)
3458
parent = self.source.get_parent()
3459
except errors.InaccessibleParent, e:
3460
mutter('parent was not accessible to copy: %s', e)
3463
self.target.set_parent(parent)
3464
if self.source._push_should_merge_tags():
3465
self.source.tags.merge_to(self.target.tags)
3193
3468
def update_revisions(self, stop_revision=None, overwrite=False,
3469
graph=None, fetch_tags=True):
3195
3470
"""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()
3471
other_revno, other_last_revision = self.source.last_revision_info()
3472
stop_revno = None # unknown
3473
if stop_revision is None:
3474
stop_revision = other_last_revision
3475
if _mod_revision.is_null(stop_revision):
3476
# if there are no commits, we're done.
3478
stop_revno = other_revno
3480
# what's the current last revision, before we fetch [and change it
3482
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3483
# we fetch here so that we don't process data twice in the common
3484
# case of having something to pull, and so that the check for
3485
# already merged can operate on the just fetched graph, which will
3486
# be cached in memory.
3488
fetch_spec_factory = fetch.FetchSpecFactory()
3489
fetch_spec_factory.source_branch = self.source
3490
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3491
fetch_spec_factory.source_repo = self.source.repository
3492
fetch_spec_factory.target_repo = self.target.repository
3493
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3494
fetch_spec = fetch_spec_factory.make_fetch_spec()
3496
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3497
self.source.repository, revision_ids=[stop_revision]).execute()
3498
self.target.fetch(self.source, fetch_spec=fetch_spec)
3499
# Check to see if one is an ancestor of the other
3502
graph = self.target.repository.get_graph()
3503
if self.target._check_if_descendant_or_diverged(
3504
stop_revision, last_rev, graph, self.source):
3505
# stop_revision is a descendant of last_rev, but we aren't
3506
# overwriting, so we're done.
3508
if stop_revno is None:
3510
graph = self.target.repository.get_graph()
3511
this_revno, this_last_revision = \
3512
self.target.last_revision_info()
3513
stop_revno = graph.find_distance_to_null(stop_revision,
3514
[(other_last_revision, other_revno),
3515
(this_last_revision, this_revno)])
3516
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3519
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3520
possible_transports=None, run_hooks=True,
3238
3521
_override_hook_target=None, local=False):
3522
"""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
3524
:param run_hooks: Private parameter - if false, this branch
3244
3525
is being called because it's the master of the primary branch,
3245
3526
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.
3528
bound_location = self.target.get_bound_location()
3529
if local and not bound_location:
3252
3530
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()
3531
master_branch = None
3532
source_is_master = (self.source.user_url == bound_location)
3533
if not local and bound_location and not source_is_master:
3534
# not pulling from master, so we need to update master.
3535
master_branch = self.target.get_master_branch(possible_transports)
3536
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']:
3539
# pull from source into master.
3540
master_branch.pull(self.source, overwrite, stop_revision,
3542
return self._pull(overwrite,
3543
stop_revision, _hook_master=master_branch,
3544
run_hooks=run_hooks,
3545
_override_hook_target=_override_hook_target,
3546
merge_tags_to_master=not source_is_master)
3288
self.source.unlock()
3549
master_branch.unlock()
3291
3551
def push(self, overwrite=False, stop_revision=None,
3292
3552
_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.
3617
def _pull(self, overwrite=False, stop_revision=None,
3618
possible_transports=None, _hook_master=None, run_hooks=True,
3619
_override_hook_target=None, local=False,
3620
merge_tags_to_master=True):
3623
This function is the core worker, used by GenericInterBranch.pull to
3624
avoid duplication when pulling source->master and source->local.
3626
:param _hook_master: Private parameter - set the branch to
3627
be supplied as the master to pull hooks.
3374
3628
:param run_hooks: Private parameter - if false, this branch
3375
3629
is being called because it's the master of the primary branch,
3376
3630
so it should not run its hooks.
3631
is being called because it's the master of the primary branch,
3632
so it should not run its hooks.
3633
:param _override_hook_target: Private parameter - set the branch to be
3634
supplied as the target_branch to pull hooks.
3635
: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:
3637
# This type of branch can't be bound.
3380
3639
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()
3640
result = PullResult()
3641
result.source_branch = self.source
3642
if _override_hook_target is None:
3643
result.target_branch = self.target
3645
result.target_branch = _override_hook_target
3646
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)
3648
# We assume that during 'pull' the target repository is closer than
3650
self.source.update_references(self.target)
3651
graph = self.target.repository.get_graph(self.source.repository)
3652
# TODO: Branch formats should have a flag that indicates
3653
# that revno's are expensive, and pull() should honor that flag.
3655
result.old_revno, result.old_revid = \
3656
self.target.last_revision_info()
3657
self.target.update_revisions(self.source, stop_revision,
3658
overwrite=overwrite, graph=graph)
3659
# TODO: The old revid should be specified when merging tags,
3660
# so a tags implementation that versions tags can only
3661
# pull in the most recent changes. -- JRV20090506
3662
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3663
overwrite, ignore_master=not merge_tags_to_master)
3664
result.new_revno, result.new_revid = self.target.last_revision_info()
3666
result.master_branch = _hook_master
3667
result.local_branch = result.target_branch
3669
result.master_branch = result.target_branch
3670
result.local_branch = None
3672
for hook in Branch.hooks['post_pull']:
3397
master_branch.unlock()
3675
self.source.unlock()
3400
3679
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)