782
826
old_repository = self.repository
783
827
if len(old_repository._fallback_repositories) != 1:
784
828
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
829
"of %r (fallbacks: %r)" % (old_repository,
830
old_repository._fallback_repositories))
831
# Open the new repository object.
832
# Repositories don't offer an interface to remove fallback
833
# repositories today; take the conceptually simpler option and just
834
# reopen it. We reopen it starting from the URL so that we
835
# get a separate connection for RemoteRepositories and can
836
# stream from one of them to the other. This does mean doing
837
# separate SSH connection setup, but unstacking is not a
838
# common operation so it's tolerable.
839
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
840
new_repository = new_bzrdir.find_repository()
841
if new_repository._fallback_repositories:
842
raise AssertionError("didn't expect %r to have "
843
"fallback_repositories"
844
% (self.repository,))
845
# Replace self.repository with the new repository.
846
# Do our best to transfer the lock state (i.e. lock-tokens and
847
# lock count) of self.repository to the new repository.
848
lock_token = old_repository.lock_write().repository_token
849
self.repository = new_repository
850
if isinstance(self, remote.RemoteBranch):
851
# Remote branches can have a second reference to the old
852
# repository that need to be replaced.
853
if self._real_branch is not None:
854
self._real_branch.repository = new_repository
855
self.repository.lock_write(token=lock_token)
856
if lock_token is not None:
857
old_repository.leave_lock_in_place()
787
858
old_repository.unlock()
859
if lock_token is not None:
860
# XXX: self.repository.leave_lock_in_place() before this
861
# function will not be preserved. Fortunately that doesn't
862
# affect the current default format (2a), and would be a
863
# corner-case anyway.
864
# - Andrew Bennetts, 2010/06/30
865
self.repository.dont_leave_lock_in_place()
869
old_repository.unlock()
870
except errors.LockNotHeld:
873
if old_lock_count == 0:
874
raise AssertionError(
875
'old_repository should have been locked at least once.')
876
for i in range(old_lock_count-1):
877
self.repository.lock_write()
878
# Fetch from the old repository into the new.
788
879
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
881
# XXX: If you unstack a branch while it has a working tree
809
882
# with a pending merge, the pending-merged revisions will no
810
883
# 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(),
885
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
886
except errors.TagsNotSupported:
887
tags_to_fetch = set()
888
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
889
old_repository, required_ids=[self.last_revision()],
890
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
891
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
819
893
old_repository.unlock()
1565
1658
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1566
lock_type='metadir', set_format=True):
1567
1660
"""Initialize a branch in a bzrdir, with specified files
1569
1662
:param a_bzrdir: The bzrdir to initialize the branch in
1570
1663
:param utf8_files: The files to create as a list of
1571
1664
(filename, content) tuples
1572
1665
: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
1666
:return: a branch in this format
1578
1668
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1579
1669
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
1670
control_files = lockable_files.LockableFiles(branch_transport,
1586
lock_name, lock_class)
1671
'lock', lockdir.LockDir)
1587
1672
control_files.create_lock()
1673
control_files.lock_write()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
1597
1675
utf8_files += [('format', self.get_format_string())]
1599
1676
for (filename, content) in utf8_files:
1600
1677
branch_transport.put_bytes(
1601
1678
filename, content,
1602
1679
mode=a_bzrdir._get_file_mode())
1605
control_files.unlock()
1606
branch = self.open(a_bzrdir, name, _found=True)
1681
control_files.unlock()
1682
branch = self.open(a_bzrdir, name, _found=True,
1683
found_repository=repository)
1607
1684
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1610
def initialize(self, a_bzrdir, name=None):
1687
def initialize(self, a_bzrdir, name=None, repository=None):
1611
1688
"""Create a branch of this format in a_bzrdir.
1613
1690
:param name: Name of the colocated branch to create.
2253
2343
__format6 = BzrBranchFormat6()
2254
2344
__format7 = BzrBranchFormat7()
2255
2345
__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__)
2346
format_registry.register(__format5)
2347
format_registry.register(BranchReferenceFormat())
2348
format_registry.register(__format6)
2349
format_registry.register(__format7)
2350
format_registry.register(__format8)
2351
format_registry.set_default(__format7)
2352
format_registry.register_extra_lazy("bzrlib.branch_weave",
2354
network_format_registry.register_lazy("Bazaar-NG branch, format 6\n",
2355
"bzrlib.branch_weave", "BzrBranchFormat4")
2358
class BranchWriteLockResult(LogicalLockResult):
2359
"""The result of write locking a branch.
2361
:ivar branch_token: The token obtained from the underlying branch lock, or
2363
:ivar unlock: A callable which will unlock the lock.
2366
def __init__(self, unlock, branch_token):
2367
LogicalLockResult.__init__(self, unlock)
2368
self.branch_token = branch_token
2371
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2268
2375
class BzrBranch(Branch, _RelockDebugMixin):
3182
3322
raise NotImplementedError(self.push)
3325
def copy_content_into(self, revision_id=None):
3326
"""Copy the content of source into target
3328
revision_id: if not None, the revision history in the new branch will
3329
be truncated to end with revision_id.
3331
raise NotImplementedError(self.copy_content_into)
3185
3334
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
3335
"""InterBranch implementation that uses public Branch functions."""
3338
def is_compatible(klass, source, target):
3339
# GenericBranch uses the public API, so always compatible
3343
def _get_branch_formats_to_test(klass):
3344
return [(format_registry.get_default(), format_registry.get_default())]
3347
def unwrap_format(klass, format):
3348
if isinstance(format, remote.RemoteBranchFormat):
3349
format._ensure_real()
3350
return format._custom_format
3354
def copy_content_into(self, revision_id=None):
3355
"""Copy the content of source into target
3357
revision_id: if not None, the revision history in the new branch will
3358
be truncated to end with revision_id.
3360
self.source.update_references(self.target)
3361
self.source._synchronize_history(self.target, revision_id)
3363
parent = self.source.get_parent()
3364
except errors.InaccessibleParent, e:
3365
mutter('parent was not accessible to copy: %s', e)
3368
self.target.set_parent(parent)
3369
if self.source._push_should_merge_tags():
3370
self.source.tags.merge_to(self.target.tags)
3193
3373
def update_revisions(self, stop_revision=None, overwrite=False,
3374
graph=None, fetch_tags=True):
3195
3375
"""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()
3376
other_revno, other_last_revision = self.source.last_revision_info()
3377
stop_revno = None # unknown
3378
if stop_revision is None:
3379
stop_revision = other_last_revision
3380
if _mod_revision.is_null(stop_revision):
3381
# if there are no commits, we're done.
3383
stop_revno = other_revno
3385
# what's the current last revision, before we fetch [and change it
3387
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3388
# we fetch here so that we don't process data twice in the common
3389
# case of having something to pull, and so that the check for
3390
# already merged can operate on the just fetched graph, which will
3391
# be cached in memory.
3393
fetch_spec_factory = fetch.FetchSpecFactory()
3394
fetch_spec_factory.source_branch = self.source
3395
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3396
fetch_spec_factory.source_repo = self.source.repository
3397
fetch_spec_factory.target_repo = self.target.repository
3398
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3399
fetch_spec = fetch_spec_factory.make_fetch_spec()
3401
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3402
self.source.repository, revision_ids=[stop_revision]).execute()
3403
self.target.fetch(self.source, fetch_spec=fetch_spec)
3404
# Check to see if one is an ancestor of the other
3407
graph = self.target.repository.get_graph()
3408
if self.target._check_if_descendant_or_diverged(
3409
stop_revision, last_rev, graph, self.source):
3410
# stop_revision is a descendant of last_rev, but we aren't
3411
# overwriting, so we're done.
3413
if stop_revno is None:
3415
graph = self.target.repository.get_graph()
3416
this_revno, this_last_revision = \
3417
self.target.last_revision_info()
3418
stop_revno = graph.find_distance_to_null(stop_revision,
3419
[(other_last_revision, other_revno),
3420
(this_last_revision, this_revno)])
3421
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3424
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3425
possible_transports=None, run_hooks=True,
3238
3426
_override_hook_target=None, local=False):
3427
"""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
3429
:param run_hooks: Private parameter - if false, this branch
3244
3430
is being called because it's the master of the primary branch,
3245
3431
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.
3433
bound_location = self.target.get_bound_location()
3434
if local and not bound_location:
3252
3435
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()
3436
master_branch = None
3437
source_is_master = (self.source.user_url == bound_location)
3438
if not local and bound_location and not source_is_master:
3439
# not pulling from master, so we need to update master.
3440
master_branch = self.target.get_master_branch(possible_transports)
3441
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']:
3444
# pull from source into master.
3445
master_branch.pull(self.source, overwrite, stop_revision,
3447
return self._pull(overwrite,
3448
stop_revision, _hook_master=master_branch,
3449
run_hooks=run_hooks,
3450
_override_hook_target=_override_hook_target,
3451
merge_tags_to_master=not source_is_master)
3288
self.source.unlock()
3454
master_branch.unlock()
3291
3456
def push(self, overwrite=False, stop_revision=None,
3292
3457
_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.
3522
def _pull(self, overwrite=False, stop_revision=None,
3523
possible_transports=None, _hook_master=None, run_hooks=True,
3524
_override_hook_target=None, local=False,
3525
merge_tags_to_master=True):
3528
This function is the core worker, used by GenericInterBranch.pull to
3529
avoid duplication when pulling source->master and source->local.
3531
:param _hook_master: Private parameter - set the branch to
3532
be supplied as the master to pull hooks.
3374
3533
:param run_hooks: Private parameter - if false, this branch
3375
3534
is being called because it's the master of the primary branch,
3376
3535
so it should not run its hooks.
3536
is being called because it's the master of the primary branch,
3537
so it should not run its hooks.
3538
:param _override_hook_target: Private parameter - set the branch to be
3539
supplied as the target_branch to pull hooks.
3540
: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:
3542
# This type of branch can't be bound.
3380
3544
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()
3545
result = PullResult()
3546
result.source_branch = self.source
3547
if _override_hook_target is None:
3548
result.target_branch = self.target
3550
result.target_branch = _override_hook_target
3551
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)
3553
# We assume that during 'pull' the target repository is closer than
3555
self.source.update_references(self.target)
3556
graph = self.target.repository.get_graph(self.source.repository)
3557
# TODO: Branch formats should have a flag that indicates
3558
# that revno's are expensive, and pull() should honor that flag.
3560
result.old_revno, result.old_revid = \
3561
self.target.last_revision_info()
3562
self.target.update_revisions(self.source, stop_revision,
3563
overwrite=overwrite, graph=graph)
3564
# TODO: The old revid should be specified when merging tags,
3565
# so a tags implementation that versions tags can only
3566
# pull in the most recent changes. -- JRV20090506
3567
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3568
overwrite, ignore_master=not merge_tags_to_master)
3569
result.new_revno, result.new_revid = self.target.last_revision_info()
3571
result.master_branch = _hook_master
3572
result.local_branch = result.target_branch
3574
result.master_branch = result.target_branch
3575
result.local_branch = None
3577
for hook in Branch.hooks['post_pull']:
3397
master_branch.unlock()
3580
self.source.unlock()
3400
3584
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)