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()
1565
1632
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1566
lock_type='metadir', set_format=True):
1567
1634
"""Initialize a branch in a bzrdir, with specified files
1569
1636
:param a_bzrdir: The bzrdir to initialize the branch in
1570
1637
:param utf8_files: The files to create as a list of
1571
1638
(filename, content) tuples
1572
1639
:param name: Name of colocated branch to create, if any
1573
:param set_format: If True, set the format with
1574
self.get_format_string. (BzrBranch4 has its format set
1576
1640
:return: a branch in this format
1578
1642
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1579
1643
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1581
'metadir': ('lock', lockdir.LockDir),
1582
'branch4': ('branch-lock', lockable_files.TransportLock),
1584
lock_name, lock_class = lock_map[lock_type]
1585
1644
control_files = lockable_files.LockableFiles(branch_transport,
1586
lock_name, lock_class)
1645
'lock', lockdir.LockDir)
1587
1646
control_files.create_lock()
1647
control_files.lock_write()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
1597
1649
utf8_files += [('format', self.get_format_string())]
1599
1650
for (filename, content) in utf8_files:
1600
1651
branch_transport.put_bytes(
1601
1652
filename, content,
1602
1653
mode=a_bzrdir._get_file_mode())
1605
control_files.unlock()
1606
branch = self.open(a_bzrdir, name, _found=True)
1655
control_files.unlock()
1656
branch = self.open(a_bzrdir, name, _found=True,
1657
found_repository=repository)
1607
1658
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1610
def initialize(self, a_bzrdir, name=None):
1661
def initialize(self, a_bzrdir, name=None, repository=None):
1611
1662
"""Create a branch of this format in a_bzrdir.
1613
1664
:param name: Name of the colocated branch to create.
2246
2308
BranchFormat.network_name() for more detail.
2311
format_registry = BranchFormatRegistry(network_format_registry)
2250
2314
# formats which have no format string are not discoverable
2251
2315
# and not independently creatable, so are not registered.
2316
__format4 = BzrBranchFormat4()
2252
2317
__format5 = BzrBranchFormat5()
2253
2318
__format6 = BzrBranchFormat6()
2254
2319
__format7 = BzrBranchFormat7()
2255
2320
__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__)
2321
format_registry.register(__format5)
2322
format_registry.register(BranchReferenceFormat())
2323
format_registry.register(__format6)
2324
format_registry.register(__format7)
2325
format_registry.register(__format8)
2326
format_registry.set_default(__format7)
2329
class BranchWriteLockResult(LogicalLockResult):
2330
"""The result of write locking a branch.
2332
:ivar branch_token: The token obtained from the underlying branch lock, or
2334
:ivar unlock: A callable which will unlock the lock.
2337
def __init__(self, unlock, branch_token):
2338
LogicalLockResult.__init__(self, unlock)
2339
self.branch_token = branch_token
2342
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2268
2346
class BzrBranch(Branch, _RelockDebugMixin):
3182
3303
raise NotImplementedError(self.push)
3306
def copy_content_into(self, revision_id=None):
3307
"""Copy the content of source into target
3309
revision_id: if not None, the revision history in the new branch will
3310
be truncated to end with revision_id.
3312
raise NotImplementedError(self.copy_content_into)
3185
3315
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
3316
"""InterBranch implementation that uses public Branch functions."""
3319
def is_compatible(klass, source, target):
3320
# GenericBranch uses the public API, so always compatible
3324
def _get_branch_formats_to_test(klass):
3325
return [(format_registry.get_default(), format_registry.get_default())]
3328
def unwrap_format(klass, format):
3329
if isinstance(format, remote.RemoteBranchFormat):
3330
format._ensure_real()
3331
return format._custom_format
3335
def copy_content_into(self, revision_id=None):
3336
"""Copy the content of source into target
3338
revision_id: if not None, the revision history in the new branch will
3339
be truncated to end with revision_id.
3341
self.source.update_references(self.target)
3342
self.source._synchronize_history(self.target, revision_id)
3344
parent = self.source.get_parent()
3345
except errors.InaccessibleParent, e:
3346
mutter('parent was not accessible to copy: %s', e)
3349
self.target.set_parent(parent)
3350
if self.source._push_should_merge_tags():
3351
self.source.tags.merge_to(self.target.tags)
3193
3354
def update_revisions(self, stop_revision=None, overwrite=False,
3355
graph=None, fetch_tags=True):
3195
3356
"""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()
3357
other_revno, other_last_revision = self.source.last_revision_info()
3358
stop_revno = None # unknown
3359
if stop_revision is None:
3360
stop_revision = other_last_revision
3361
if _mod_revision.is_null(stop_revision):
3362
# if there are no commits, we're done.
3364
stop_revno = other_revno
3366
# what's the current last revision, before we fetch [and change it
3368
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3369
# we fetch here so that we don't process data twice in the common
3370
# case of having something to pull, and so that the check for
3371
# already merged can operate on the just fetched graph, which will
3372
# be cached in memory.
3374
fetch_spec_factory = fetch.FetchSpecFactory()
3375
fetch_spec_factory.source_branch = self.source
3376
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3377
fetch_spec_factory.source_repo = self.source.repository
3378
fetch_spec_factory.target_repo = self.target.repository
3379
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3380
fetch_spec = fetch_spec_factory.make_fetch_spec()
3382
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3383
self.source.repository, revision_ids=[stop_revision]).execute()
3384
self.target.fetch(self.source, fetch_spec=fetch_spec)
3385
# Check to see if one is an ancestor of the other
3388
graph = self.target.repository.get_graph()
3389
if self.target._check_if_descendant_or_diverged(
3390
stop_revision, last_rev, graph, self.source):
3391
# stop_revision is a descendant of last_rev, but we aren't
3392
# overwriting, so we're done.
3394
if stop_revno is None:
3396
graph = self.target.repository.get_graph()
3397
this_revno, this_last_revision = \
3398
self.target.last_revision_info()
3399
stop_revno = graph.find_distance_to_null(stop_revision,
3400
[(other_last_revision, other_revno),
3401
(this_last_revision, this_revno)])
3402
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3405
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3406
possible_transports=None, run_hooks=True,
3238
3407
_override_hook_target=None, local=False):
3408
"""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
3410
:param run_hooks: Private parameter - if false, this branch
3244
3411
is being called because it's the master of the primary branch,
3245
3412
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.
3414
bound_location = self.target.get_bound_location()
3415
if local and not bound_location:
3252
3416
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()
3417
master_branch = None
3418
source_is_master = (self.source.user_url == bound_location)
3419
if not local and bound_location and not source_is_master:
3420
# not pulling from master, so we need to update master.
3421
master_branch = self.target.get_master_branch(possible_transports)
3422
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']:
3425
# pull from source into master.
3426
master_branch.pull(self.source, overwrite, stop_revision,
3428
return self._pull(overwrite,
3429
stop_revision, _hook_master=master_branch,
3430
run_hooks=run_hooks,
3431
_override_hook_target=_override_hook_target,
3432
merge_tags_to_master=not source_is_master)
3288
self.source.unlock()
3435
master_branch.unlock()
3291
3437
def push(self, overwrite=False, stop_revision=None,
3292
3438
_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.
3503
def _pull(self, overwrite=False, stop_revision=None,
3504
possible_transports=None, _hook_master=None, run_hooks=True,
3505
_override_hook_target=None, local=False,
3506
merge_tags_to_master=True):
3509
This function is the core worker, used by GenericInterBranch.pull to
3510
avoid duplication when pulling source->master and source->local.
3512
:param _hook_master: Private parameter - set the branch to
3513
be supplied as the master to pull hooks.
3374
3514
:param run_hooks: Private parameter - if false, this branch
3375
3515
is being called because it's the master of the primary branch,
3376
3516
so it should not run its hooks.
3517
is being called because it's the master of the primary branch,
3518
so it should not run its hooks.
3519
:param _override_hook_target: Private parameter - set the branch to be
3520
supplied as the target_branch to pull hooks.
3521
: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:
3523
# This type of branch can't be bound.
3380
3525
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()
3526
result = PullResult()
3527
result.source_branch = self.source
3528
if _override_hook_target is None:
3529
result.target_branch = self.target
3531
result.target_branch = _override_hook_target
3532
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)
3534
# We assume that during 'pull' the target repository is closer than
3536
self.source.update_references(self.target)
3537
graph = self.target.repository.get_graph(self.source.repository)
3538
# TODO: Branch formats should have a flag that indicates
3539
# that revno's are expensive, and pull() should honor that flag.
3541
result.old_revno, result.old_revid = \
3542
self.target.last_revision_info()
3543
self.target.update_revisions(self.source, stop_revision,
3544
overwrite=overwrite, graph=graph)
3545
# TODO: The old revid should be specified when merging tags,
3546
# so a tags implementation that versions tags can only
3547
# pull in the most recent changes. -- JRV20090506
3548
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3549
overwrite, ignore_master=not merge_tags_to_master)
3550
result.new_revno, result.new_revid = self.target.last_revision_info()
3552
result.master_branch = _hook_master
3553
result.local_branch = result.target_branch
3555
result.master_branch = result.target_branch
3556
result.local_branch = None
3558
for hook in Branch.hooks['post_pull']:
3397
master_branch.unlock()
3561
self.source.unlock()
3400
3565
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)