792
817
old_repository = self.repository
793
818
if len(old_repository._fallback_repositories) != 1:
794
819
raise AssertionError("can't cope with fallback repositories "
795
"of %r" % (self.repository,))
796
# unlock it, including unlocking the fallback
820
"of %r (fallbacks: %r)" % (old_repository,
821
old_repository._fallback_repositories))
822
# Open the new repository object.
823
# Repositories don't offer an interface to remove fallback
824
# repositories today; take the conceptually simpler option and just
825
# reopen it. We reopen it starting from the URL so that we
826
# get a separate connection for RemoteRepositories and can
827
# stream from one of them to the other. This does mean doing
828
# separate SSH connection setup, but unstacking is not a
829
# common operation so it's tolerable.
830
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
831
new_repository = new_bzrdir.find_repository()
832
if new_repository._fallback_repositories:
833
raise AssertionError("didn't expect %r to have "
834
"fallback_repositories"
835
% (self.repository,))
836
# Replace self.repository with the new repository.
837
# Do our best to transfer the lock state (i.e. lock-tokens and
838
# lock count) of self.repository to the new repository.
839
lock_token = old_repository.lock_write().repository_token
840
self.repository = new_repository
841
if isinstance(self, remote.RemoteBranch):
842
# Remote branches can have a second reference to the old
843
# repository that need to be replaced.
844
if self._real_branch is not None:
845
self._real_branch.repository = new_repository
846
self.repository.lock_write(token=lock_token)
847
if lock_token is not None:
848
old_repository.leave_lock_in_place()
797
849
old_repository.unlock()
850
if lock_token is not None:
851
# XXX: self.repository.leave_lock_in_place() before this
852
# function will not be preserved. Fortunately that doesn't
853
# affect the current default format (2a), and would be a
854
# corner-case anyway.
855
# - Andrew Bennetts, 2010/06/30
856
self.repository.dont_leave_lock_in_place()
860
old_repository.unlock()
861
except errors.LockNotHeld:
864
if old_lock_count == 0:
865
raise AssertionError(
866
'old_repository should have been locked at least once.')
867
for i in range(old_lock_count-1):
868
self.repository.lock_write()
869
# Fetch from the old repository into the new.
798
870
old_repository.lock_read()
800
# Repositories don't offer an interface to remove fallback
801
# repositories today; take the conceptually simpler option and just
802
# reopen it. We reopen it starting from the URL so that we
803
# get a separate connection for RemoteRepositories and can
804
# stream from one of them to the other. This does mean doing
805
# separate SSH connection setup, but unstacking is not a
806
# common operation so it's tolerable.
807
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
808
new_repository = new_bzrdir.find_repository()
809
self.repository = new_repository
810
if self.repository._fallback_repositories:
811
raise AssertionError("didn't expect %r to have "
812
"fallback_repositories"
813
% (self.repository,))
814
# this is not paired with an unlock because it's just restoring
815
# the previous state; the lock's released when set_stacked_on_url
817
self.repository.lock_write()
818
872
# XXX: If you unstack a branch while it has a working tree
819
873
# with a pending merge, the pending-merged revisions will no
820
874
# longer be present. You can (probably) revert and remerge.
822
# XXX: This only fetches up to the tip of the repository; it
823
# doesn't bring across any tags. That's fairly consistent
824
# with how branch works, but perhaps not ideal.
825
self.repository.fetch(old_repository,
826
revision_id=self.last_revision(),
876
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
877
except errors.TagsNotSupported:
878
tags_to_fetch = set()
879
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
880
old_repository, required_ids=[self.last_revision()],
881
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
882
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
829
884
old_repository.unlock()
1576
1653
for hook in hooks:
1579
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1580
lock_type='metadir', set_format=True):
1581
"""Initialize a branch in a bzrdir, with specified files
1583
:param a_bzrdir: The bzrdir to initialize the branch in
1584
:param utf8_files: The files to create as a list of
1585
(filename, content) tuples
1586
:param name: Name of colocated branch to create, if any
1587
:param set_format: If True, set the format with
1588
self.get_format_string. (BzrBranch4 has its format set
1590
:return: a branch in this format
1592
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1593
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1595
'metadir': ('lock', lockdir.LockDir),
1596
'branch4': ('branch-lock', lockable_files.TransportLock),
1598
lock_name, lock_class = lock_map[lock_type]
1599
control_files = lockable_files.LockableFiles(branch_transport,
1600
lock_name, lock_class)
1601
control_files.create_lock()
1603
control_files.lock_write()
1604
except errors.LockContention:
1605
if lock_type != 'branch4':
1611
utf8_files += [('format', self.get_format_string())]
1613
for (filename, content) in utf8_files:
1614
branch_transport.put_bytes(
1616
mode=a_bzrdir._get_file_mode())
1619
control_files.unlock()
1620
branch = self.open(a_bzrdir, name, _found=True)
1621
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1624
def initialize(self, a_bzrdir, name=None):
1656
def initialize(self, a_bzrdir, name=None, repository=None):
1625
1657
"""Create a branch of this format in a_bzrdir.
1627
1659
:param name: Name of the colocated branch to create.
1718
1787
These are all empty initially, because by default nothing should get
1721
Hooks.__init__(self)
1722
self.create_hook(HookPoint('set_rh',
1790
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1791
self.add_hook('set_rh',
1723
1792
"Invoked whenever the revision history has been set via "
1724
1793
"set_revision_history. The api signature is (branch, "
1725
1794
"revision_history), and the branch will be write-locked. "
1726
1795
"The set_rh hook can be expensive for bzr to trigger, a better "
1727
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1728
self.create_hook(HookPoint('open',
1796
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1797
self.add_hook('open',
1729
1798
"Called with the Branch object that has been opened after a "
1730
"branch is opened.", (1, 8), None))
1731
self.create_hook(HookPoint('post_push',
1799
"branch is opened.", (1, 8))
1800
self.add_hook('post_push',
1732
1801
"Called after a push operation completes. post_push is called "
1733
1802
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1734
"bzr client.", (0, 15), None))
1735
self.create_hook(HookPoint('post_pull',
1803
"bzr client.", (0, 15))
1804
self.add_hook('post_pull',
1736
1805
"Called after a pull operation completes. post_pull is called "
1737
1806
"with a bzrlib.branch.PullResult object and only runs in the "
1738
"bzr client.", (0, 15), None))
1739
self.create_hook(HookPoint('pre_commit',
1740
"Called after a commit is calculated but before it is is "
1807
"bzr client.", (0, 15))
1808
self.add_hook('pre_commit',
1809
"Called after a commit is calculated but before it is "
1741
1810
"completed. pre_commit is called with (local, master, old_revno, "
1742
1811
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1743
1812
"). old_revid is NULL_REVISION for the first commit to a branch, "
1745
1814
"basis revision. hooks MUST NOT modify this delta. "
1746
1815
" future_tree is an in-memory tree obtained from "
1747
1816
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1748
"tree.", (0,91), None))
1749
self.create_hook(HookPoint('post_commit',
1818
self.add_hook('post_commit',
1750
1819
"Called in the bzr client after a commit has completed. "
1751
1820
"post_commit is called with (local, master, old_revno, old_revid, "
1752
1821
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1753
"commit to a branch.", (0, 15), None))
1754
self.create_hook(HookPoint('post_uncommit',
1822
"commit to a branch.", (0, 15))
1823
self.add_hook('post_uncommit',
1755
1824
"Called in the bzr client after an uncommit completes. "
1756
1825
"post_uncommit is called with (local, master, old_revno, "
1757
1826
"old_revid, new_revno, new_revid) where local is the local branch "
1758
1827
"or None, master is the target branch, and an empty branch "
1759
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1760
self.create_hook(HookPoint('pre_change_branch_tip',
1828
"receives new_revno of 0, new_revid of None.", (0, 15))
1829
self.add_hook('pre_change_branch_tip',
1761
1830
"Called in bzr client and server before a change to the tip of a "
1762
1831
"branch is made. pre_change_branch_tip is called with a "
1763
1832
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1764
"commit, uncommit will all trigger this hook.", (1, 6), None))
1765
self.create_hook(HookPoint('post_change_branch_tip',
1833
"commit, uncommit will all trigger this hook.", (1, 6))
1834
self.add_hook('post_change_branch_tip',
1766
1835
"Called in bzr client and server after a change to the tip of a "
1767
1836
"branch is made. post_change_branch_tip is called with a "
1768
1837
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1769
"commit, uncommit will all trigger this hook.", (1, 4), None))
1770
self.create_hook(HookPoint('transform_fallback_location',
1838
"commit, uncommit will all trigger this hook.", (1, 4))
1839
self.add_hook('transform_fallback_location',
1771
1840
"Called when a stacked branch is activating its fallback "
1772
1841
"locations. transform_fallback_location is called with (branch, "
1773
1842
"url), and should return a new url. Returning the same url "
1778
1847
"fallback locations have not been activated. When there are "
1779
1848
"multiple hooks installed for transform_fallback_location, "
1780
1849
"all are called with the url returned from the previous hook."
1781
"The order is however undefined.", (1, 9), None))
1782
self.create_hook(HookPoint('automatic_tag_name',
1783
"Called to determine an automatic tag name for a revision."
1850
"The order is however undefined.", (1, 9))
1851
self.add_hook('automatic_tag_name',
1852
"Called to determine an automatic tag name for a revision. "
1784
1853
"automatic_tag_name is called with (branch, revision_id) and "
1785
1854
"should return a tag name or None if no tag name could be "
1786
1855
"determined. The first non-None tag name returned will be used.",
1788
self.create_hook(HookPoint('post_branch_init',
1857
self.add_hook('post_branch_init',
1789
1858
"Called after new branch initialization completes. "
1790
1859
"post_branch_init is called with a "
1791
1860
"bzrlib.branch.BranchInitHookParams. "
1792
1861
"Note that init, branch and checkout (both heavyweight and "
1793
"lightweight) will all trigger this hook.", (2, 2), None))
1794
self.create_hook(HookPoint('post_switch',
1862
"lightweight) will all trigger this hook.", (2, 2))
1863
self.add_hook('post_switch',
1795
1864
"Called after a checkout switches branch. "
1796
1865
"post_switch is called with a "
1797
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1866
"bzrlib.branch.SwitchHookParams.", (2, 2))
3225
3320
raise NotImplementedError(self.push)
3323
def copy_content_into(self, revision_id=None):
3324
"""Copy the content of source into target
3326
revision_id: if not None, the revision history in the new branch will
3327
be truncated to end with revision_id.
3329
raise NotImplementedError(self.copy_content_into)
3332
def fetch(self, stop_revision=None, fetch_spec=None):
3335
:param stop_revision: Last revision to fetch
3336
:param fetch_spec: Fetch spec.
3338
raise NotImplementedError(self.fetch)
3228
3341
class GenericInterBranch(InterBranch):
3229
"""InterBranch implementation that uses public Branch functions.
3233
def _get_branch_formats_to_test():
3234
return BranchFormat._default_format, BranchFormat._default_format
3342
"""InterBranch implementation that uses public Branch functions."""
3345
def is_compatible(klass, source, target):
3346
# GenericBranch uses the public API, so always compatible
3350
def _get_branch_formats_to_test(klass):
3351
return [(format_registry.get_default(), format_registry.get_default())]
3354
def unwrap_format(klass, format):
3355
if isinstance(format, remote.RemoteBranchFormat):
3356
format._ensure_real()
3357
return format._custom_format
3361
def copy_content_into(self, revision_id=None):
3362
"""Copy the content of source into target
3364
revision_id: if not None, the revision history in the new branch will
3365
be truncated to end with revision_id.
3367
self.source.update_references(self.target)
3368
self.source._synchronize_history(self.target, revision_id)
3370
parent = self.source.get_parent()
3371
except errors.InaccessibleParent, e:
3372
mutter('parent was not accessible to copy: %s', e)
3375
self.target.set_parent(parent)
3376
if self.source._push_should_merge_tags():
3377
self.source.tags.merge_to(self.target.tags)
3380
def fetch(self, stop_revision=None, fetch_spec=None):
3381
if fetch_spec is not None and stop_revision is not None:
3382
raise AssertionError(
3383
"fetch_spec and last_revision are mutually exclusive.")
3384
if self.target.base == self.source.base:
3386
self.source.lock_read()
3388
if stop_revision is None and fetch_spec is None:
3389
stop_revision = self.source.last_revision()
3390
stop_revision = _mod_revision.ensure_null(stop_revision)
3391
return self.target.repository.fetch(self.source.repository,
3392
revision_id=stop_revision, fetch_spec=fetch_spec)
3394
self.source.unlock()
3236
3397
def update_revisions(self, stop_revision=None, overwrite=False,
3398
graph=None, fetch_tags=True):
3238
3399
"""See InterBranch.update_revisions()."""
3239
self.source.lock_read()
3241
other_revno, other_last_revision = self.source.last_revision_info()
3242
stop_revno = None # unknown
3243
if stop_revision is None:
3244
stop_revision = other_last_revision
3245
if _mod_revision.is_null(stop_revision):
3246
# if there are no commits, we're done.
3248
stop_revno = other_revno
3250
# what's the current last revision, before we fetch [and change it
3252
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3253
# we fetch here so that we don't process data twice in the common
3254
# case of having something to pull, and so that the check for
3255
# already merged can operate on the just fetched graph, which will
3256
# be cached in memory.
3257
self.target.fetch(self.source, stop_revision)
3258
# Check to see if one is an ancestor of the other
3261
graph = self.target.repository.get_graph()
3262
if self.target._check_if_descendant_or_diverged(
3263
stop_revision, last_rev, graph, self.source):
3264
# stop_revision is a descendant of last_rev, but we aren't
3265
# overwriting, so we're done.
3267
if stop_revno is None:
3269
graph = self.target.repository.get_graph()
3270
this_revno, this_last_revision = \
3271
self.target.last_revision_info()
3272
stop_revno = graph.find_distance_to_null(stop_revision,
3273
[(other_last_revision, other_revno),
3274
(this_last_revision, this_revno)])
3275
self.target.set_last_revision_info(stop_revno, stop_revision)
3277
self.source.unlock()
3400
other_revno, other_last_revision = self.source.last_revision_info()
3401
stop_revno = None # unknown
3402
if stop_revision is None:
3403
stop_revision = other_last_revision
3404
if _mod_revision.is_null(stop_revision):
3405
# if there are no commits, we're done.
3407
stop_revno = other_revno
3409
# what's the current last revision, before we fetch [and change it
3411
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3412
# we fetch here so that we don't process data twice in the common
3413
# case of having something to pull, and so that the check for
3414
# already merged can operate on the just fetched graph, which will
3415
# be cached in memory.
3417
fetch_spec_factory = fetch.FetchSpecFactory()
3418
fetch_spec_factory.source_branch = self.source
3419
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3420
fetch_spec_factory.source_repo = self.source.repository
3421
fetch_spec_factory.target_repo = self.target.repository
3422
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3423
fetch_spec = fetch_spec_factory.make_fetch_spec()
3425
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3426
self.source.repository, revision_ids=[stop_revision]).execute()
3427
self.target.fetch(self.source, fetch_spec=fetch_spec)
3428
# Check to see if one is an ancestor of the other
3431
graph = self.target.repository.get_graph()
3432
if self.target._check_if_descendant_or_diverged(
3433
stop_revision, last_rev, graph, self.source):
3434
# stop_revision is a descendant of last_rev, but we aren't
3435
# overwriting, so we're done.
3437
if stop_revno is None:
3439
graph = self.target.repository.get_graph()
3440
this_revno, this_last_revision = \
3441
self.target.last_revision_info()
3442
stop_revno = graph.find_distance_to_null(stop_revision,
3443
[(other_last_revision, other_revno),
3444
(this_last_revision, this_revno)])
3445
self.target.set_last_revision_info(stop_revno, stop_revision)
3279
3448
def pull(self, overwrite=False, stop_revision=None,
3280
possible_transports=None, _hook_master=None, run_hooks=True,
3449
possible_transports=None, run_hooks=True,
3281
3450
_override_hook_target=None, local=False):
3451
"""Pull from source into self, updating my master if any.
3284
:param _hook_master: Private parameter - set the branch to
3285
be supplied as the master to pull hooks.
3286
3453
:param run_hooks: Private parameter - if false, this branch
3287
3454
is being called because it's the master of the primary branch,
3288
3455
so it should not run its hooks.
3289
:param _override_hook_target: Private parameter - set the branch to be
3290
supplied as the target_branch to pull hooks.
3291
:param local: Only update the local branch, and not the bound branch.
3293
# This type of branch can't be bound.
3457
bound_location = self.target.get_bound_location()
3458
if local and not bound_location:
3295
3459
raise errors.LocalRequiresBoundBranch()
3296
result = PullResult()
3297
result.source_branch = self.source
3298
if _override_hook_target is None:
3299
result.target_branch = self.target
3301
result.target_branch = _override_hook_target
3302
self.source.lock_read()
3460
master_branch = None
3461
source_is_master = (self.source.user_url == bound_location)
3462
if not local and bound_location and not source_is_master:
3463
# not pulling from master, so we need to update master.
3464
master_branch = self.target.get_master_branch(possible_transports)
3465
master_branch.lock_write()
3304
# We assume that during 'pull' the target repository is closer than
3306
self.source.update_references(self.target)
3307
graph = self.target.repository.get_graph(self.source.repository)
3308
# TODO: Branch formats should have a flag that indicates
3309
# that revno's are expensive, and pull() should honor that flag.
3311
result.old_revno, result.old_revid = \
3312
self.target.last_revision_info()
3313
self.target.update_revisions(self.source, stop_revision,
3314
overwrite=overwrite, graph=graph)
3315
# TODO: The old revid should be specified when merging tags,
3316
# so a tags implementation that versions tags can only
3317
# pull in the most recent changes. -- JRV20090506
3318
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3320
result.new_revno, result.new_revid = self.target.last_revision_info()
3322
result.master_branch = _hook_master
3323
result.local_branch = result.target_branch
3325
result.master_branch = result.target_branch
3326
result.local_branch = None
3328
for hook in Branch.hooks['post_pull']:
3468
# pull from source into master.
3469
master_branch.pull(self.source, overwrite, stop_revision,
3471
return self._pull(overwrite,
3472
stop_revision, _hook_master=master_branch,
3473
run_hooks=run_hooks,
3474
_override_hook_target=_override_hook_target,
3475
merge_tags_to_master=not source_is_master)
3331
self.source.unlock()
3478
master_branch.unlock()
3334
3480
def push(self, overwrite=False, stop_revision=None,
3335
3481
_override_hook_source_branch=None):
3401
def is_compatible(self, source, target):
3402
# GenericBranch uses the public API, so always compatible
3406
class InterToBranch5(GenericInterBranch):
3409
def _get_branch_formats_to_test():
3410
return BranchFormat._default_format, BzrBranchFormat5()
3412
def pull(self, overwrite=False, stop_revision=None,
3413
possible_transports=None, run_hooks=True,
3414
_override_hook_target=None, local=False):
3415
"""Pull from source into self, updating my master if any.
3546
def _pull(self, overwrite=False, stop_revision=None,
3547
possible_transports=None, _hook_master=None, run_hooks=True,
3548
_override_hook_target=None, local=False,
3549
merge_tags_to_master=True):
3552
This function is the core worker, used by GenericInterBranch.pull to
3553
avoid duplication when pulling source->master and source->local.
3555
:param _hook_master: Private parameter - set the branch to
3556
be supplied as the master to pull hooks.
3417
3557
:param run_hooks: Private parameter - if false, this branch
3418
3558
is being called because it's the master of the primary branch,
3419
3559
so it should not run its hooks.
3560
is being called because it's the master of the primary branch,
3561
so it should not run its hooks.
3562
:param _override_hook_target: Private parameter - set the branch to be
3563
supplied as the target_branch to pull hooks.
3564
:param local: Only update the local branch, and not the bound branch.
3421
bound_location = self.target.get_bound_location()
3422
if local and not bound_location:
3566
# This type of branch can't be bound.
3423
3568
raise errors.LocalRequiresBoundBranch()
3424
master_branch = None
3425
if not local and bound_location and self.source.user_url != bound_location:
3426
# not pulling from master, so we need to update master.
3427
master_branch = self.target.get_master_branch(possible_transports)
3428
master_branch.lock_write()
3569
result = PullResult()
3570
result.source_branch = self.source
3571
if _override_hook_target is None:
3572
result.target_branch = self.target
3574
result.target_branch = _override_hook_target
3575
self.source.lock_read()
3431
# pull from source into master.
3432
master_branch.pull(self.source, overwrite, stop_revision,
3434
return super(InterToBranch5, self).pull(overwrite,
3435
stop_revision, _hook_master=master_branch,
3436
run_hooks=run_hooks,
3437
_override_hook_target=_override_hook_target)
3577
# We assume that during 'pull' the target repository is closer than
3579
self.source.update_references(self.target)
3580
graph = self.target.repository.get_graph(self.source.repository)
3581
# TODO: Branch formats should have a flag that indicates
3582
# that revno's are expensive, and pull() should honor that flag.
3584
result.old_revno, result.old_revid = \
3585
self.target.last_revision_info()
3586
self.target.update_revisions(self.source, stop_revision,
3587
overwrite=overwrite, graph=graph)
3588
# TODO: The old revid should be specified when merging tags,
3589
# so a tags implementation that versions tags can only
3590
# pull in the most recent changes. -- JRV20090506
3591
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3592
overwrite, ignore_master=not merge_tags_to_master)
3593
result.new_revno, result.new_revid = self.target.last_revision_info()
3595
result.master_branch = _hook_master
3596
result.local_branch = result.target_branch
3598
result.master_branch = result.target_branch
3599
result.local_branch = None
3601
for hook in Branch.hooks['post_pull']:
3440
master_branch.unlock()
3604
self.source.unlock()
3443
3608
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)