792
814
old_repository = self.repository
793
815
if len(old_repository._fallback_repositories) != 1:
794
816
raise AssertionError("can't cope with fallback repositories "
795
"of %r" % (self.repository,))
796
# unlock it, including unlocking the fallback
817
"of %r (fallbacks: %r)" % (old_repository,
818
old_repository._fallback_repositories))
819
# Open the new repository object.
820
# Repositories don't offer an interface to remove fallback
821
# repositories today; take the conceptually simpler option and just
822
# reopen it. We reopen it starting from the URL so that we
823
# get a separate connection for RemoteRepositories and can
824
# stream from one of them to the other. This does mean doing
825
# separate SSH connection setup, but unstacking is not a
826
# common operation so it's tolerable.
827
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
828
new_repository = new_bzrdir.find_repository()
829
if new_repository._fallback_repositories:
830
raise AssertionError("didn't expect %r to have "
831
"fallback_repositories"
832
% (self.repository,))
833
# Replace self.repository with the new repository.
834
# Do our best to transfer the lock state (i.e. lock-tokens and
835
# lock count) of self.repository to the new repository.
836
lock_token = old_repository.lock_write().repository_token
837
self.repository = new_repository
838
if isinstance(self, remote.RemoteBranch):
839
# Remote branches can have a second reference to the old
840
# repository that need to be replaced.
841
if self._real_branch is not None:
842
self._real_branch.repository = new_repository
843
self.repository.lock_write(token=lock_token)
844
if lock_token is not None:
845
old_repository.leave_lock_in_place()
797
846
old_repository.unlock()
847
if lock_token is not None:
848
# XXX: self.repository.leave_lock_in_place() before this
849
# function will not be preserved. Fortunately that doesn't
850
# affect the current default format (2a), and would be a
851
# corner-case anyway.
852
# - Andrew Bennetts, 2010/06/30
853
self.repository.dont_leave_lock_in_place()
857
old_repository.unlock()
858
except errors.LockNotHeld:
861
if old_lock_count == 0:
862
raise AssertionError(
863
'old_repository should have been locked at least once.')
864
for i in range(old_lock_count-1):
865
self.repository.lock_write()
866
# Fetch from the old repository into the new.
798
867
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
869
# XXX: If you unstack a branch while it has a working tree
819
870
# with a pending merge, the pending-merged revisions will no
820
871
# 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(),
873
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
874
except errors.TagsNotSupported:
875
tags_to_fetch = set()
876
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
877
old_repository, required_ids=[self.last_revision()],
878
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
879
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
829
881
old_repository.unlock()
1576
1644
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):
1647
def initialize(self, a_bzrdir, name=None, repository=None):
1625
1648
"""Create a branch of this format in a_bzrdir.
1627
1650
:param name: Name of the colocated branch to create.
1718
1778
These are all empty initially, because by default nothing should get
1721
Hooks.__init__(self)
1722
self.create_hook(HookPoint('set_rh',
1781
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1782
self.add_hook('set_rh',
1723
1783
"Invoked whenever the revision history has been set via "
1724
1784
"set_revision_history. The api signature is (branch, "
1725
1785
"revision_history), and the branch will be write-locked. "
1726
1786
"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',
1787
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1788
self.add_hook('open',
1729
1789
"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',
1790
"branch is opened.", (1, 8))
1791
self.add_hook('post_push',
1732
1792
"Called after a push operation completes. post_push is called "
1733
1793
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1734
"bzr client.", (0, 15), None))
1735
self.create_hook(HookPoint('post_pull',
1794
"bzr client.", (0, 15))
1795
self.add_hook('post_pull',
1736
1796
"Called after a pull operation completes. post_pull is called "
1737
1797
"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 "
1798
"bzr client.", (0, 15))
1799
self.add_hook('pre_commit',
1800
"Called after a commit is calculated but before it is "
1741
1801
"completed. pre_commit is called with (local, master, old_revno, "
1742
1802
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1743
1803
"). old_revid is NULL_REVISION for the first commit to a branch, "
1745
1805
"basis revision. hooks MUST NOT modify this delta. "
1746
1806
" future_tree is an in-memory tree obtained from "
1747
1807
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1748
"tree.", (0,91), None))
1749
self.create_hook(HookPoint('post_commit',
1809
self.add_hook('post_commit',
1750
1810
"Called in the bzr client after a commit has completed. "
1751
1811
"post_commit is called with (local, master, old_revno, old_revid, "
1752
1812
"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',
1813
"commit to a branch.", (0, 15))
1814
self.add_hook('post_uncommit',
1755
1815
"Called in the bzr client after an uncommit completes. "
1756
1816
"post_uncommit is called with (local, master, old_revno, "
1757
1817
"old_revid, new_revno, new_revid) where local is the local branch "
1758
1818
"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',
1819
"receives new_revno of 0, new_revid of None.", (0, 15))
1820
self.add_hook('pre_change_branch_tip',
1761
1821
"Called in bzr client and server before a change to the tip of a "
1762
1822
"branch is made. pre_change_branch_tip is called with a "
1763
1823
"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',
1824
"commit, uncommit will all trigger this hook.", (1, 6))
1825
self.add_hook('post_change_branch_tip',
1766
1826
"Called in bzr client and server after a change to the tip of a "
1767
1827
"branch is made. post_change_branch_tip is called with a "
1768
1828
"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',
1829
"commit, uncommit will all trigger this hook.", (1, 4))
1830
self.add_hook('transform_fallback_location',
1771
1831
"Called when a stacked branch is activating its fallback "
1772
1832
"locations. transform_fallback_location is called with (branch, "
1773
1833
"url), and should return a new url. Returning the same url "
1778
1838
"fallback locations have not been activated. When there are "
1779
1839
"multiple hooks installed for transform_fallback_location, "
1780
1840
"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."
1841
"The order is however undefined.", (1, 9))
1842
self.add_hook('automatic_tag_name',
1843
"Called to determine an automatic tag name for a revision. "
1784
1844
"automatic_tag_name is called with (branch, revision_id) and "
1785
1845
"should return a tag name or None if no tag name could be "
1786
1846
"determined. The first non-None tag name returned will be used.",
1788
self.create_hook(HookPoint('post_branch_init',
1848
self.add_hook('post_branch_init',
1789
1849
"Called after new branch initialization completes. "
1790
1850
"post_branch_init is called with a "
1791
1851
"bzrlib.branch.BranchInitHookParams. "
1792
1852
"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',
1853
"lightweight) will all trigger this hook.", (2, 2))
1854
self.add_hook('post_switch',
1795
1855
"Called after a checkout switches branch. "
1796
1856
"post_switch is called with a "
1797
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1857
"bzrlib.branch.SwitchHookParams.", (2, 2))
3225
3311
raise NotImplementedError(self.push)
3314
def copy_content_into(self, revision_id=None):
3315
"""Copy the content of source into target
3317
revision_id: if not None, the revision history in the new branch will
3318
be truncated to end with revision_id.
3320
raise NotImplementedError(self.copy_content_into)
3323
def fetch(self, stop_revision=None, fetch_spec=None):
3326
:param stop_revision: Last revision to fetch
3327
:param fetch_spec: Fetch spec.
3329
raise NotImplementedError(self.fetch)
3228
3332
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
3333
"""InterBranch implementation that uses public Branch functions."""
3336
def is_compatible(klass, source, target):
3337
# GenericBranch uses the public API, so always compatible
3341
def _get_branch_formats_to_test(klass):
3342
return [(format_registry.get_default(), format_registry.get_default())]
3345
def unwrap_format(klass, format):
3346
if isinstance(format, remote.RemoteBranchFormat):
3347
format._ensure_real()
3348
return format._custom_format
3352
def copy_content_into(self, revision_id=None):
3353
"""Copy the content of source into target
3355
revision_id: if not None, the revision history in the new branch will
3356
be truncated to end with revision_id.
3358
self.source.update_references(self.target)
3359
self.source._synchronize_history(self.target, revision_id)
3361
parent = self.source.get_parent()
3362
except errors.InaccessibleParent, e:
3363
mutter('parent was not accessible to copy: %s', e)
3366
self.target.set_parent(parent)
3367
if self.source._push_should_merge_tags():
3368
self.source.tags.merge_to(self.target.tags)
3371
def fetch(self, stop_revision=None, fetch_spec=None):
3372
if fetch_spec is not None and stop_revision is not None:
3373
raise AssertionError(
3374
"fetch_spec and last_revision are mutually exclusive.")
3375
if self.target.base == self.source.base:
3377
self.source.lock_read()
3379
if stop_revision is None and fetch_spec is None:
3380
stop_revision = self.source.last_revision()
3381
stop_revision = _mod_revision.ensure_null(stop_revision)
3382
return self.target.repository.fetch(self.source.repository,
3383
revision_id=stop_revision, fetch_spec=fetch_spec)
3385
self.source.unlock()
3236
3388
def update_revisions(self, stop_revision=None, overwrite=False,
3389
graph=None, fetch_tags=True):
3238
3390
"""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()
3391
other_revno, other_last_revision = self.source.last_revision_info()
3392
stop_revno = None # unknown
3393
if stop_revision is None:
3394
stop_revision = other_last_revision
3395
if _mod_revision.is_null(stop_revision):
3396
# if there are no commits, we're done.
3398
stop_revno = other_revno
3400
# what's the current last revision, before we fetch [and change it
3402
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3403
# we fetch here so that we don't process data twice in the common
3404
# case of having something to pull, and so that the check for
3405
# already merged can operate on the just fetched graph, which will
3406
# be cached in memory.
3408
fetch_spec_factory = fetch.FetchSpecFactory()
3409
fetch_spec_factory.source_branch = self.source
3410
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3411
fetch_spec_factory.source_repo = self.source.repository
3412
fetch_spec_factory.target_repo = self.target.repository
3413
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3414
fetch_spec = fetch_spec_factory.make_fetch_spec()
3416
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3417
self.source.repository, revision_ids=[stop_revision]).execute()
3418
self.target.fetch(self.source, fetch_spec=fetch_spec)
3419
# Check to see if one is an ancestor of the other
3422
graph = self.target.repository.get_graph()
3423
if self.target._check_if_descendant_or_diverged(
3424
stop_revision, last_rev, graph, self.source):
3425
# stop_revision is a descendant of last_rev, but we aren't
3426
# overwriting, so we're done.
3428
if stop_revno is None:
3430
graph = self.target.repository.get_graph()
3431
this_revno, this_last_revision = \
3432
self.target.last_revision_info()
3433
stop_revno = graph.find_distance_to_null(stop_revision,
3434
[(other_last_revision, other_revno),
3435
(this_last_revision, this_revno)])
3436
self.target.set_last_revision_info(stop_revno, stop_revision)
3279
3439
def pull(self, overwrite=False, stop_revision=None,
3280
possible_transports=None, _hook_master=None, run_hooks=True,
3440
possible_transports=None, run_hooks=True,
3281
3441
_override_hook_target=None, local=False):
3442
"""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
3444
:param run_hooks: Private parameter - if false, this branch
3287
3445
is being called because it's the master of the primary branch,
3288
3446
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.
3448
bound_location = self.target.get_bound_location()
3449
if local and not bound_location:
3295
3450
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()
3451
master_branch = None
3452
source_is_master = (self.source.user_url == bound_location)
3453
if not local and bound_location and not source_is_master:
3454
# not pulling from master, so we need to update master.
3455
master_branch = self.target.get_master_branch(possible_transports)
3456
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']:
3459
# pull from source into master.
3460
master_branch.pull(self.source, overwrite, stop_revision,
3462
return self._pull(overwrite,
3463
stop_revision, _hook_master=master_branch,
3464
run_hooks=run_hooks,
3465
_override_hook_target=_override_hook_target,
3466
merge_tags_to_master=not source_is_master)
3331
self.source.unlock()
3469
master_branch.unlock()
3334
3471
def push(self, overwrite=False, stop_revision=None,
3335
3472
_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.
3537
def _pull(self, overwrite=False, stop_revision=None,
3538
possible_transports=None, _hook_master=None, run_hooks=True,
3539
_override_hook_target=None, local=False,
3540
merge_tags_to_master=True):
3543
This function is the core worker, used by GenericInterBranch.pull to
3544
avoid duplication when pulling source->master and source->local.
3546
:param _hook_master: Private parameter - set the branch to
3547
be supplied as the master to pull hooks.
3417
3548
:param run_hooks: Private parameter - if false, this branch
3418
3549
is being called because it's the master of the primary branch,
3419
3550
so it should not run its hooks.
3551
is being called because it's the master of the primary branch,
3552
so it should not run its hooks.
3553
:param _override_hook_target: Private parameter - set the branch to be
3554
supplied as the target_branch to pull hooks.
3555
: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:
3557
# This type of branch can't be bound.
3423
3559
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()
3560
result = PullResult()
3561
result.source_branch = self.source
3562
if _override_hook_target is None:
3563
result.target_branch = self.target
3565
result.target_branch = _override_hook_target
3566
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)
3568
# We assume that during 'pull' the target repository is closer than
3570
self.source.update_references(self.target)
3571
graph = self.target.repository.get_graph(self.source.repository)
3572
# TODO: Branch formats should have a flag that indicates
3573
# that revno's are expensive, and pull() should honor that flag.
3575
result.old_revno, result.old_revid = \
3576
self.target.last_revision_info()
3577
self.target.update_revisions(self.source, stop_revision,
3578
overwrite=overwrite, graph=graph)
3579
# TODO: The old revid should be specified when merging tags,
3580
# so a tags implementation that versions tags can only
3581
# pull in the most recent changes. -- JRV20090506
3582
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3583
overwrite, ignore_master=not merge_tags_to_master)
3584
result.new_revno, result.new_revid = self.target.last_revision_info()
3586
result.master_branch = _hook_master
3587
result.local_branch = result.target_branch
3589
result.master_branch = result.target_branch
3590
result.local_branch = None
3592
for hook in Branch.hooks['post_pull']:
3440
master_branch.unlock()
3595
self.source.unlock()
3443
3599
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)