793
816
old_repository = self.repository
794
817
if len(old_repository._fallback_repositories) != 1:
795
818
raise AssertionError("can't cope with fallback repositories "
796
"of %r" % (self.repository,))
797
# unlock it, including unlocking the fallback
819
"of %r (fallbacks: %r)" % (old_repository,
820
old_repository._fallback_repositories))
821
# Open the new repository object.
822
# Repositories don't offer an interface to remove fallback
823
# repositories today; take the conceptually simpler option and just
824
# reopen it. We reopen it starting from the URL so that we
825
# get a separate connection for RemoteRepositories and can
826
# stream from one of them to the other. This does mean doing
827
# separate SSH connection setup, but unstacking is not a
828
# common operation so it's tolerable.
829
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
830
new_repository = new_bzrdir.find_repository()
831
if new_repository._fallback_repositories:
832
raise AssertionError("didn't expect %r to have "
833
"fallback_repositories"
834
% (self.repository,))
835
# Replace self.repository with the new repository.
836
# Do our best to transfer the lock state (i.e. lock-tokens and
837
# lock count) of self.repository to the new repository.
838
lock_token = old_repository.lock_write().repository_token
839
self.repository = new_repository
840
if isinstance(self, remote.RemoteBranch):
841
# Remote branches can have a second reference to the old
842
# repository that need to be replaced.
843
if self._real_branch is not None:
844
self._real_branch.repository = new_repository
845
self.repository.lock_write(token=lock_token)
846
if lock_token is not None:
847
old_repository.leave_lock_in_place()
798
848
old_repository.unlock()
849
if lock_token is not None:
850
# XXX: self.repository.leave_lock_in_place() before this
851
# function will not be preserved. Fortunately that doesn't
852
# affect the current default format (2a), and would be a
853
# corner-case anyway.
854
# - Andrew Bennetts, 2010/06/30
855
self.repository.dont_leave_lock_in_place()
859
old_repository.unlock()
860
except errors.LockNotHeld:
863
if old_lock_count == 0:
864
raise AssertionError(
865
'old_repository should have been locked at least once.')
866
for i in range(old_lock_count-1):
867
self.repository.lock_write()
868
# Fetch from the old repository into the new.
799
869
old_repository.lock_read()
801
# Repositories don't offer an interface to remove fallback
802
# repositories today; take the conceptually simpler option and just
803
# reopen it. We reopen it starting from the URL so that we
804
# get a separate connection for RemoteRepositories and can
805
# stream from one of them to the other. This does mean doing
806
# separate SSH connection setup, but unstacking is not a
807
# common operation so it's tolerable.
808
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
809
new_repository = new_bzrdir.find_repository()
810
self.repository = new_repository
811
if self.repository._fallback_repositories:
812
raise AssertionError("didn't expect %r to have "
813
"fallback_repositories"
814
% (self.repository,))
815
# this is not paired with an unlock because it's just restoring
816
# the previous state; the lock's released when set_stacked_on_url
818
self.repository.lock_write()
819
871
# XXX: If you unstack a branch while it has a working tree
820
872
# with a pending merge, the pending-merged revisions will no
821
873
# longer be present. You can (probably) revert and remerge.
3223
3360
raise NotImplementedError(self.push)
3363
def copy_content_into(self, revision_id=None):
3364
"""Copy the content of source into target
3366
revision_id: if not None, the revision history in the new branch will
3367
be truncated to end with revision_id.
3369
raise NotImplementedError(self.copy_content_into)
3226
3372
class GenericInterBranch(InterBranch):
3227
"""InterBranch implementation that uses public Branch functions.
3231
def _get_branch_formats_to_test():
3232
return BranchFormat._default_format, BranchFormat._default_format
3373
"""InterBranch implementation that uses public Branch functions."""
3376
def is_compatible(klass, source, target):
3377
# GenericBranch uses the public API, so always compatible
3381
def _get_branch_formats_to_test(klass):
3382
return [(BranchFormat._default_format, BranchFormat._default_format)]
3385
def unwrap_format(klass, format):
3386
if isinstance(format, remote.RemoteBranchFormat):
3387
format._ensure_real()
3388
return format._custom_format
3392
def copy_content_into(self, revision_id=None):
3393
"""Copy the content of source into target
3395
revision_id: if not None, the revision history in the new branch will
3396
be truncated to end with revision_id.
3398
self.source.update_references(self.target)
3399
self.source._synchronize_history(self.target, revision_id)
3401
parent = self.source.get_parent()
3402
except errors.InaccessibleParent, e:
3403
mutter('parent was not accessible to copy: %s', e)
3406
self.target.set_parent(parent)
3407
if self.source._push_should_merge_tags():
3408
self.source.tags.merge_to(self.target.tags)
3234
3411
def update_revisions(self, stop_revision=None, overwrite=False,
3236
3413
"""See InterBranch.update_revisions()."""
3237
self.source.lock_read()
3239
other_revno, other_last_revision = self.source.last_revision_info()
3240
stop_revno = None # unknown
3241
if stop_revision is None:
3242
stop_revision = other_last_revision
3243
if _mod_revision.is_null(stop_revision):
3244
# if there are no commits, we're done.
3246
stop_revno = other_revno
3248
# what's the current last revision, before we fetch [and change it
3250
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3251
# we fetch here so that we don't process data twice in the common
3252
# case of having something to pull, and so that the check for
3253
# already merged can operate on the just fetched graph, which will
3254
# be cached in memory.
3255
self.target.fetch(self.source, stop_revision)
3256
# Check to see if one is an ancestor of the other
3259
graph = self.target.repository.get_graph()
3260
if self.target._check_if_descendant_or_diverged(
3261
stop_revision, last_rev, graph, self.source):
3262
# stop_revision is a descendant of last_rev, but we aren't
3263
# overwriting, so we're done.
3265
if stop_revno is None:
3267
graph = self.target.repository.get_graph()
3268
this_revno, this_last_revision = \
3269
self.target.last_revision_info()
3270
stop_revno = graph.find_distance_to_null(stop_revision,
3271
[(other_last_revision, other_revno),
3272
(this_last_revision, this_revno)])
3273
self.target.set_last_revision_info(stop_revno, stop_revision)
3275
self.source.unlock()
3414
other_revno, other_last_revision = self.source.last_revision_info()
3415
stop_revno = None # unknown
3416
if stop_revision is None:
3417
stop_revision = other_last_revision
3418
if _mod_revision.is_null(stop_revision):
3419
# if there are no commits, we're done.
3421
stop_revno = other_revno
3423
# what's the current last revision, before we fetch [and change it
3425
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3426
# we fetch here so that we don't process data twice in the common
3427
# case of having something to pull, and so that the check for
3428
# already merged can operate on the just fetched graph, which will
3429
# be cached in memory.
3430
self.target.fetch(self.source, stop_revision)
3431
# Check to see if one is an ancestor of the other
3434
graph = self.target.repository.get_graph()
3435
if self.target._check_if_descendant_or_diverged(
3436
stop_revision, last_rev, graph, self.source):
3437
# stop_revision is a descendant of last_rev, but we aren't
3438
# overwriting, so we're done.
3440
if stop_revno is None:
3442
graph = self.target.repository.get_graph()
3443
this_revno, this_last_revision = \
3444
self.target.last_revision_info()
3445
stop_revno = graph.find_distance_to_null(stop_revision,
3446
[(other_last_revision, other_revno),
3447
(this_last_revision, this_revno)])
3448
self.target.set_last_revision_info(stop_revno, stop_revision)
3277
3451
def pull(self, overwrite=False, stop_revision=None,
3278
possible_transports=None, _hook_master=None, run_hooks=True,
3452
possible_transports=None, run_hooks=True,
3279
3453
_override_hook_target=None, local=False):
3454
"""Pull from source into self, updating my master if any.
3282
:param _hook_master: Private parameter - set the branch to
3283
be supplied as the master to pull hooks.
3284
3456
:param run_hooks: Private parameter - if false, this branch
3285
3457
is being called because it's the master of the primary branch,
3286
3458
so it should not run its hooks.
3287
:param _override_hook_target: Private parameter - set the branch to be
3288
supplied as the target_branch to pull hooks.
3289
:param local: Only update the local branch, and not the bound branch.
3291
# This type of branch can't be bound.
3460
bound_location = self.target.get_bound_location()
3461
if local and not bound_location:
3293
3462
raise errors.LocalRequiresBoundBranch()
3294
result = PullResult()
3295
result.source_branch = self.source
3296
if _override_hook_target is None:
3297
result.target_branch = self.target
3299
result.target_branch = _override_hook_target
3300
self.source.lock_read()
3463
master_branch = None
3464
source_is_master = (self.source.user_url == bound_location)
3465
if not local and bound_location and not source_is_master:
3466
# not pulling from master, so we need to update master.
3467
master_branch = self.target.get_master_branch(possible_transports)
3468
master_branch.lock_write()
3302
# We assume that during 'pull' the target repository is closer than
3304
self.source.update_references(self.target)
3305
graph = self.target.repository.get_graph(self.source.repository)
3306
# TODO: Branch formats should have a flag that indicates
3307
# that revno's are expensive, and pull() should honor that flag.
3309
result.old_revno, result.old_revid = \
3310
self.target.last_revision_info()
3311
self.target.update_revisions(self.source, stop_revision,
3312
overwrite=overwrite, graph=graph)
3313
# TODO: The old revid should be specified when merging tags,
3314
# so a tags implementation that versions tags can only
3315
# pull in the most recent changes. -- JRV20090506
3316
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3318
result.new_revno, result.new_revid = self.target.last_revision_info()
3320
result.master_branch = _hook_master
3321
result.local_branch = result.target_branch
3323
result.master_branch = result.target_branch
3324
result.local_branch = None
3326
for hook in Branch.hooks['post_pull']:
3471
# pull from source into master.
3472
master_branch.pull(self.source, overwrite, stop_revision,
3474
return self._pull(overwrite,
3475
stop_revision, _hook_master=master_branch,
3476
run_hooks=run_hooks,
3477
_override_hook_target=_override_hook_target,
3478
merge_tags_to_master=not source_is_master)
3329
self.source.unlock()
3481
master_branch.unlock()
3332
3483
def push(self, overwrite=False, stop_revision=None,
3333
3484
_override_hook_source_branch=None):
3399
def is_compatible(self, source, target):
3400
# GenericBranch uses the public API, so always compatible
3404
class InterToBranch5(GenericInterBranch):
3407
def _get_branch_formats_to_test():
3408
return BranchFormat._default_format, BzrBranchFormat5()
3410
def pull(self, overwrite=False, stop_revision=None,
3411
possible_transports=None, run_hooks=True,
3412
_override_hook_target=None, local=False):
3413
"""Pull from source into self, updating my master if any.
3549
def _pull(self, overwrite=False, stop_revision=None,
3550
possible_transports=None, _hook_master=None, run_hooks=True,
3551
_override_hook_target=None, local=False,
3552
merge_tags_to_master=True):
3555
This function is the core worker, used by GenericInterBranch.pull to
3556
avoid duplication when pulling source->master and source->local.
3558
:param _hook_master: Private parameter - set the branch to
3559
be supplied as the master to pull hooks.
3415
3560
:param run_hooks: Private parameter - if false, this branch
3416
3561
is being called because it's the master of the primary branch,
3417
3562
so it should not run its hooks.
3563
:param _override_hook_target: Private parameter - set the branch to be
3564
supplied as the target_branch to pull hooks.
3565
:param local: Only update the local branch, and not the bound branch.
3419
bound_location = self.target.get_bound_location()
3420
if local and not bound_location:
3567
# This type of branch can't be bound.
3421
3569
raise errors.LocalRequiresBoundBranch()
3422
master_branch = None
3423
if not local and bound_location and self.source.user_url != bound_location:
3424
# not pulling from master, so we need to update master.
3425
master_branch = self.target.get_master_branch(possible_transports)
3426
master_branch.lock_write()
3570
result = PullResult()
3571
result.source_branch = self.source
3572
if _override_hook_target is None:
3573
result.target_branch = self.target
3575
result.target_branch = _override_hook_target
3576
self.source.lock_read()
3429
# pull from source into master.
3430
master_branch.pull(self.source, overwrite, stop_revision,
3432
return super(InterToBranch5, self).pull(overwrite,
3433
stop_revision, _hook_master=master_branch,
3434
run_hooks=run_hooks,
3435
_override_hook_target=_override_hook_target)
3578
# We assume that during 'pull' the target repository is closer than
3580
self.source.update_references(self.target)
3581
graph = self.target.repository.get_graph(self.source.repository)
3582
# TODO: Branch formats should have a flag that indicates
3583
# that revno's are expensive, and pull() should honor that flag.
3585
result.old_revno, result.old_revid = \
3586
self.target.last_revision_info()
3587
self.target.update_revisions(self.source, stop_revision,
3588
overwrite=overwrite, graph=graph)
3589
# TODO: The old revid should be specified when merging tags,
3590
# so a tags implementation that versions tags can only
3591
# pull in the most recent changes. -- JRV20090506
3592
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3593
overwrite, ignore_master=not merge_tags_to_master)
3594
result.new_revno, result.new_revid = self.target.last_revision_info()
3596
result.master_branch = _hook_master
3597
result.local_branch = result.target_branch
3599
result.master_branch = result.target_branch
3600
result.local_branch = None
3602
for hook in Branch.hooks['post_pull']:
3438
master_branch.unlock()
3605
self.source.unlock()
3441
3609
InterBranch.register_optimiser(GenericInterBranch)
3442
InterBranch.register_optimiser(InterToBranch5)