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
3326
raise NotImplementedError(self.push)
3329
def copy_content_into(self, revision_id=None):
3330
"""Copy the content of source into target
3332
revision_id: if not None, the revision history in the new branch will
3333
be truncated to end with revision_id.
3335
raise NotImplementedError(self.copy_content_into)
3338
def fetch(self, stop_revision=None, fetch_spec=None):
3341
:param stop_revision: Last revision to fetch
3342
:param fetch_spec: Fetch spec.
3344
raise NotImplementedError(self.fetch)
3228
3347
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
3348
"""InterBranch implementation that uses public Branch functions."""
3351
def is_compatible(klass, source, target):
3352
# GenericBranch uses the public API, so always compatible
3356
def _get_branch_formats_to_test(klass):
3357
return [(format_registry.get_default(), format_registry.get_default())]
3360
def unwrap_format(klass, format):
3361
if isinstance(format, remote.RemoteBranchFormat):
3362
format._ensure_real()
3363
return format._custom_format
3367
def copy_content_into(self, revision_id=None):
3368
"""Copy the content of source into target
3370
revision_id: if not None, the revision history in the new branch will
3371
be truncated to end with revision_id.
3373
self.source.update_references(self.target)
3374
self.source._synchronize_history(self.target, revision_id)
3376
parent = self.source.get_parent()
3377
except errors.InaccessibleParent, e:
3378
mutter('parent was not accessible to copy: %s', e)
3381
self.target.set_parent(parent)
3382
if self.source._push_should_merge_tags():
3383
self.source.tags.merge_to(self.target.tags)
3386
def fetch(self, stop_revision=None, fetch_spec=None):
3387
if fetch_spec is not None and stop_revision is not None:
3388
raise AssertionError(
3389
"fetch_spec and last_revision are mutually exclusive.")
3390
if self.target.base == self.source.base:
3392
self.source.lock_read()
3394
if stop_revision is None and fetch_spec is None:
3395
stop_revision = self.source.last_revision()
3396
stop_revision = _mod_revision.ensure_null(stop_revision)
3397
return self.target.repository.fetch(self.source.repository,
3398
revision_id=stop_revision, fetch_spec=fetch_spec)
3400
self.source.unlock()
3236
3403
def update_revisions(self, stop_revision=None, overwrite=False,
3404
graph=None, fetch_tags=True):
3238
3405
"""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()
3406
other_revno, other_last_revision = self.source.last_revision_info()
3407
stop_revno = None # unknown
3408
if stop_revision is None:
3409
stop_revision = other_last_revision
3410
if _mod_revision.is_null(stop_revision):
3411
# if there are no commits, we're done.
3413
stop_revno = other_revno
3415
# what's the current last revision, before we fetch [and change it
3417
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3418
# we fetch here so that we don't process data twice in the common
3419
# case of having something to pull, and so that the check for
3420
# already merged can operate on the just fetched graph, which will
3421
# be cached in memory.
3423
fetch_spec_factory = fetch.FetchSpecFactory()
3424
fetch_spec_factory.source_branch = self.source
3425
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3426
fetch_spec_factory.source_repo = self.source.repository
3427
fetch_spec_factory.target_repo = self.target.repository
3428
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3429
fetch_spec = fetch_spec_factory.make_fetch_spec()
3431
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3432
self.source.repository, revision_ids=[stop_revision]).execute()
3433
self.target.fetch(self.source, fetch_spec=fetch_spec)
3434
# Check to see if one is an ancestor of the other
3437
graph = self.target.repository.get_graph()
3438
if self.target._check_if_descendant_or_diverged(
3439
stop_revision, last_rev, graph, self.source):
3440
# stop_revision is a descendant of last_rev, but we aren't
3441
# overwriting, so we're done.
3443
if stop_revno is None:
3445
graph = self.target.repository.get_graph()
3446
this_revno, this_last_revision = \
3447
self.target.last_revision_info()
3448
stop_revno = graph.find_distance_to_null(stop_revision,
3449
[(other_last_revision, other_revno),
3450
(this_last_revision, this_revno)])
3451
self.target.set_last_revision_info(stop_revno, stop_revision)
3279
3454
def pull(self, overwrite=False, stop_revision=None,
3280
possible_transports=None, _hook_master=None, run_hooks=True,
3455
possible_transports=None, run_hooks=True,
3281
3456
_override_hook_target=None, local=False):
3457
"""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
3459
:param run_hooks: Private parameter - if false, this branch
3287
3460
is being called because it's the master of the primary branch,
3288
3461
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.
3463
bound_location = self.target.get_bound_location()
3464
if local and not bound_location:
3295
3465
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()
3466
master_branch = None
3467
source_is_master = (self.source.user_url == bound_location)
3468
if not local and bound_location and not source_is_master:
3469
# not pulling from master, so we need to update master.
3470
master_branch = self.target.get_master_branch(possible_transports)
3471
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']:
3474
# pull from source into master.
3475
master_branch.pull(self.source, overwrite, stop_revision,
3477
return self._pull(overwrite,
3478
stop_revision, _hook_master=master_branch,
3479
run_hooks=run_hooks,
3480
_override_hook_target=_override_hook_target,
3481
merge_tags_to_master=not source_is_master)
3331
self.source.unlock()
3484
master_branch.unlock()
3334
3486
def push(self, overwrite=False, stop_revision=None,
3335
3487
_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.
3552
def _pull(self, overwrite=False, stop_revision=None,
3553
possible_transports=None, _hook_master=None, run_hooks=True,
3554
_override_hook_target=None, local=False,
3555
merge_tags_to_master=True):
3558
This function is the core worker, used by GenericInterBranch.pull to
3559
avoid duplication when pulling source->master and source->local.
3561
:param _hook_master: Private parameter - set the branch to
3562
be supplied as the master to pull hooks.
3417
3563
:param run_hooks: Private parameter - if false, this branch
3418
3564
is being called because it's the master of the primary branch,
3419
3565
so it should not run its hooks.
3566
is being called because it's the master of the primary branch,
3567
so it should not run its hooks.
3568
:param _override_hook_target: Private parameter - set the branch to be
3569
supplied as the target_branch to pull hooks.
3570
: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:
3572
# This type of branch can't be bound.
3423
3574
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()
3575
result = PullResult()
3576
result.source_branch = self.source
3577
if _override_hook_target is None:
3578
result.target_branch = self.target
3580
result.target_branch = _override_hook_target
3581
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)
3583
# We assume that during 'pull' the target repository is closer than
3585
self.source.update_references(self.target)
3586
graph = self.target.repository.get_graph(self.source.repository)
3587
# TODO: Branch formats should have a flag that indicates
3588
# that revno's are expensive, and pull() should honor that flag.
3590
result.old_revno, result.old_revid = \
3591
self.target.last_revision_info()
3592
self.target.update_revisions(self.source, stop_revision,
3593
overwrite=overwrite, graph=graph)
3594
# TODO: The old revid should be specified when merging tags,
3595
# so a tags implementation that versions tags can only
3596
# pull in the most recent changes. -- JRV20090506
3597
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3598
overwrite, ignore_master=not merge_tags_to_master)
3599
result.new_revno, result.new_revid = self.target.last_revision_info()
3601
result.master_branch = _hook_master
3602
result.local_branch = result.target_branch
3604
result.master_branch = result.target_branch
3605
result.local_branch = None
3607
for hook in Branch.hooks['post_pull']:
3440
master_branch.unlock()
3610
self.source.unlock()
3443
3614
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)