782
812
old_repository = self.repository
783
813
if len(old_repository._fallback_repositories) != 1:
784
814
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
815
"of %r (fallbacks: %r)" % (old_repository,
816
old_repository._fallback_repositories))
817
# Open the new repository object.
818
# Repositories don't offer an interface to remove fallback
819
# repositories today; take the conceptually simpler option and just
820
# reopen it. We reopen it starting from the URL so that we
821
# get a separate connection for RemoteRepositories and can
822
# stream from one of them to the other. This does mean doing
823
# separate SSH connection setup, but unstacking is not a
824
# common operation so it's tolerable.
825
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
826
new_repository = new_bzrdir.find_repository()
827
if new_repository._fallback_repositories:
828
raise AssertionError("didn't expect %r to have "
829
"fallback_repositories"
830
% (self.repository,))
831
# Replace self.repository with the new repository.
832
# Do our best to transfer the lock state (i.e. lock-tokens and
833
# lock count) of self.repository to the new repository.
834
lock_token = old_repository.lock_write().repository_token
835
self.repository = new_repository
836
if isinstance(self, remote.RemoteBranch):
837
# Remote branches can have a second reference to the old
838
# repository that need to be replaced.
839
if self._real_branch is not None:
840
self._real_branch.repository = new_repository
841
self.repository.lock_write(token=lock_token)
842
if lock_token is not None:
843
old_repository.leave_lock_in_place()
787
844
old_repository.unlock()
845
if lock_token is not None:
846
# XXX: self.repository.leave_lock_in_place() before this
847
# function will not be preserved. Fortunately that doesn't
848
# affect the current default format (2a), and would be a
849
# corner-case anyway.
850
# - Andrew Bennetts, 2010/06/30
851
self.repository.dont_leave_lock_in_place()
855
old_repository.unlock()
856
except errors.LockNotHeld:
859
if old_lock_count == 0:
860
raise AssertionError(
861
'old_repository should have been locked at least once.')
862
for i in range(old_lock_count-1):
863
self.repository.lock_write()
864
# Fetch from the old repository into the new.
788
865
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
867
# XXX: If you unstack a branch while it has a working tree
809
868
# with a pending merge, the pending-merged revisions will no
810
869
# 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(),
871
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
872
except errors.TagsNotSupported:
873
tags_to_fetch = set()
874
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
875
old_repository, required_ids=[self.last_revision()],
876
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
877
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
819
879
old_repository.unlock()
1562
1643
for hook in hooks:
1565
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1566
lock_type='metadir', set_format=True):
1567
"""Initialize a branch in a bzrdir, with specified files
1569
:param a_bzrdir: The bzrdir to initialize the branch in
1570
:param utf8_files: The files to create as a list of
1571
(filename, content) tuples
1572
: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
:return: a branch in this format
1578
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1579
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
control_files = lockable_files.LockableFiles(branch_transport,
1586
lock_name, lock_class)
1587
control_files.create_lock()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
1597
utf8_files += [('format', self.get_format_string())]
1599
for (filename, content) in utf8_files:
1600
branch_transport.put_bytes(
1602
mode=a_bzrdir._get_file_mode())
1605
control_files.unlock()
1606
branch = self.open(a_bzrdir, name, _found=True)
1607
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1610
def initialize(self, a_bzrdir, name=None):
1646
def initialize(self, a_bzrdir, name=None, repository=None):
1611
1647
"""Create a branch of this format in a_bzrdir.
1613
1649
:param name: Name of the colocated branch to create.
1704
1777
These are all empty initially, because by default nothing should get
1707
Hooks.__init__(self)
1708
self.create_hook(HookPoint('set_rh',
1780
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1781
self.add_hook('set_rh',
1709
1782
"Invoked whenever the revision history has been set via "
1710
1783
"set_revision_history. The api signature is (branch, "
1711
1784
"revision_history), and the branch will be write-locked. "
1712
1785
"The set_rh hook can be expensive for bzr to trigger, a better "
1713
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1714
self.create_hook(HookPoint('open',
1786
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1787
self.add_hook('open',
1715
1788
"Called with the Branch object that has been opened after a "
1716
"branch is opened.", (1, 8), None))
1717
self.create_hook(HookPoint('post_push',
1789
"branch is opened.", (1, 8))
1790
self.add_hook('post_push',
1718
1791
"Called after a push operation completes. post_push is called "
1719
1792
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1720
"bzr client.", (0, 15), None))
1721
self.create_hook(HookPoint('post_pull',
1793
"bzr client.", (0, 15))
1794
self.add_hook('post_pull',
1722
1795
"Called after a pull operation completes. post_pull is called "
1723
1796
"with a bzrlib.branch.PullResult object and only runs in the "
1724
"bzr client.", (0, 15), None))
1725
self.create_hook(HookPoint('pre_commit',
1726
"Called after a commit is calculated but before it is is "
1797
"bzr client.", (0, 15))
1798
self.add_hook('pre_commit',
1799
"Called after a commit is calculated but before it is "
1727
1800
"completed. pre_commit is called with (local, master, old_revno, "
1728
1801
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1729
1802
"). old_revid is NULL_REVISION for the first commit to a branch, "
1731
1804
"basis revision. hooks MUST NOT modify this delta. "
1732
1805
" future_tree is an in-memory tree obtained from "
1733
1806
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1808
self.add_hook('post_commit',
1736
1809
"Called in the bzr client after a commit has completed. "
1737
1810
"post_commit is called with (local, master, old_revno, old_revid, "
1738
1811
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1739
"commit to a branch.", (0, 15), None))
1740
self.create_hook(HookPoint('post_uncommit',
1812
"commit to a branch.", (0, 15))
1813
self.add_hook('post_uncommit',
1741
1814
"Called in the bzr client after an uncommit completes. "
1742
1815
"post_uncommit is called with (local, master, old_revno, "
1743
1816
"old_revid, new_revno, new_revid) where local is the local branch "
1744
1817
"or None, master is the target branch, and an empty branch "
1745
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1746
self.create_hook(HookPoint('pre_change_branch_tip',
1818
"receives new_revno of 0, new_revid of None.", (0, 15))
1819
self.add_hook('pre_change_branch_tip',
1747
1820
"Called in bzr client and server before a change to the tip of a "
1748
1821
"branch is made. pre_change_branch_tip is called with a "
1749
1822
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1750
"commit, uncommit will all trigger this hook.", (1, 6), None))
1751
self.create_hook(HookPoint('post_change_branch_tip',
1823
"commit, uncommit will all trigger this hook.", (1, 6))
1824
self.add_hook('post_change_branch_tip',
1752
1825
"Called in bzr client and server after a change to the tip of a "
1753
1826
"branch is made. post_change_branch_tip is called with a "
1754
1827
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1755
"commit, uncommit will all trigger this hook.", (1, 4), None))
1756
self.create_hook(HookPoint('transform_fallback_location',
1828
"commit, uncommit will all trigger this hook.", (1, 4))
1829
self.add_hook('transform_fallback_location',
1757
1830
"Called when a stacked branch is activating its fallback "
1758
1831
"locations. transform_fallback_location is called with (branch, "
1759
1832
"url), and should return a new url. Returning the same url "
1764
1837
"fallback locations have not been activated. When there are "
1765
1838
"multiple hooks installed for transform_fallback_location, "
1766
1839
"all are called with the url returned from the previous hook."
1767
"The order is however undefined.", (1, 9), None))
1768
self.create_hook(HookPoint('automatic_tag_name',
1769
"Called to determine an automatic tag name for a revision."
1840
"The order is however undefined.", (1, 9))
1841
self.add_hook('automatic_tag_name',
1842
"Called to determine an automatic tag name for a revision. "
1770
1843
"automatic_tag_name is called with (branch, revision_id) and "
1771
1844
"should return a tag name or None if no tag name could be "
1772
1845
"determined. The first non-None tag name returned will be used.",
1774
self.create_hook(HookPoint('post_branch_init',
1847
self.add_hook('post_branch_init',
1775
1848
"Called after new branch initialization completes. "
1776
1849
"post_branch_init is called with a "
1777
1850
"bzrlib.branch.BranchInitHookParams. "
1778
1851
"Note that init, branch and checkout (both heavyweight and "
1779
"lightweight) will all trigger this hook.", (2, 2), None))
1780
self.create_hook(HookPoint('post_switch',
1852
"lightweight) will all trigger this hook.", (2, 2))
1853
self.add_hook('post_switch',
1781
1854
"Called after a checkout switches branch. "
1782
1855
"post_switch is called with a "
1783
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1856
"bzrlib.branch.SwitchHookParams.", (2, 2))
3182
3314
raise NotImplementedError(self.push)
3317
def copy_content_into(self, revision_id=None):
3318
"""Copy the content of source into target
3320
revision_id: if not None, the revision history in the new branch will
3321
be truncated to end with revision_id.
3323
raise NotImplementedError(self.copy_content_into)
3326
def fetch(self, stop_revision=None):
3329
:param stop_revision: Last revision to fetch
3331
raise NotImplementedError(self.fetch)
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)
3373
def fetch(self, stop_revision=None):
3374
if self.target.base == self.source.base:
3376
self.source.lock_read()
3378
fetch_spec_factory = fetch.FetchSpecFactory()
3379
fetch_spec_factory.source_branch = self.source
3380
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3381
fetch_spec_factory.source_repo = self.source.repository
3382
fetch_spec_factory.target_repo = self.target.repository
3383
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3384
fetch_spec = fetch_spec_factory.make_fetch_spec()
3385
return self.target.repository.fetch(self.source.repository,
3386
fetch_spec=fetch_spec)
3388
self.source.unlock()
3193
3391
def update_revisions(self, stop_revision=None, overwrite=False,
3195
3393
"""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()
3394
other_revno, other_last_revision = self.source.last_revision_info()
3395
stop_revno = None # unknown
3396
if stop_revision is None:
3397
stop_revision = other_last_revision
3398
if _mod_revision.is_null(stop_revision):
3399
# if there are no commits, we're done.
3401
stop_revno = other_revno
3403
# what's the current last revision, before we fetch [and change it
3405
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3406
# we fetch here so that we don't process data twice in the common
3407
# case of having something to pull, and so that the check for
3408
# already merged can operate on the just fetched graph, which will
3409
# be cached in memory.
3410
self.fetch(stop_revision=stop_revision)
3411
# Check to see if one is an ancestor of the other
3414
graph = self.target.repository.get_graph()
3415
if self.target._check_if_descendant_or_diverged(
3416
stop_revision, last_rev, graph, self.source):
3417
# stop_revision is a descendant of last_rev, but we aren't
3418
# overwriting, so we're done.
3420
if stop_revno is None:
3422
graph = self.target.repository.get_graph()
3423
this_revno, this_last_revision = \
3424
self.target.last_revision_info()
3425
stop_revno = graph.find_distance_to_null(stop_revision,
3426
[(other_last_revision, other_revno),
3427
(this_last_revision, this_revno)])
3428
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3431
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3432
possible_transports=None, run_hooks=True,
3238
3433
_override_hook_target=None, local=False):
3434
"""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
3436
:param run_hooks: Private parameter - if false, this branch
3244
3437
is being called because it's the master of the primary branch,
3245
3438
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.
3440
bound_location = self.target.get_bound_location()
3441
if local and not bound_location:
3252
3442
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()
3443
master_branch = None
3444
source_is_master = (self.source.user_url == bound_location)
3445
if not local and bound_location and not source_is_master:
3446
# not pulling from master, so we need to update master.
3447
master_branch = self.target.get_master_branch(possible_transports)
3448
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']:
3451
# pull from source into master.
3452
master_branch.pull(self.source, overwrite, stop_revision,
3454
return self._pull(overwrite,
3455
stop_revision, _hook_master=master_branch,
3456
run_hooks=run_hooks,
3457
_override_hook_target=_override_hook_target,
3458
merge_tags_to_master=not source_is_master)
3288
self.source.unlock()
3461
master_branch.unlock()
3291
3463
def push(self, overwrite=False, stop_revision=None,
3292
3464
_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.
3529
def _pull(self, overwrite=False, stop_revision=None,
3530
possible_transports=None, _hook_master=None, run_hooks=True,
3531
_override_hook_target=None, local=False,
3532
merge_tags_to_master=True):
3535
This function is the core worker, used by GenericInterBranch.pull to
3536
avoid duplication when pulling source->master and source->local.
3538
:param _hook_master: Private parameter - set the branch to
3539
be supplied as the master to pull hooks.
3374
3540
:param run_hooks: Private parameter - if false, this branch
3375
3541
is being called because it's the master of the primary branch,
3376
3542
so it should not run its hooks.
3543
is being called because it's the master of the primary branch,
3544
so it should not run its hooks.
3545
:param _override_hook_target: Private parameter - set the branch to be
3546
supplied as the target_branch to pull hooks.
3547
: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:
3549
# This type of branch can't be bound.
3380
3551
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()
3552
result = PullResult()
3553
result.source_branch = self.source
3554
if _override_hook_target is None:
3555
result.target_branch = self.target
3557
result.target_branch = _override_hook_target
3558
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)
3560
# We assume that during 'pull' the target repository is closer than
3562
self.source.update_references(self.target)
3563
graph = self.target.repository.get_graph(self.source.repository)
3564
# TODO: Branch formats should have a flag that indicates
3565
# that revno's are expensive, and pull() should honor that flag.
3567
result.old_revno, result.old_revid = \
3568
self.target.last_revision_info()
3569
self.target.update_revisions(self.source, stop_revision,
3570
overwrite=overwrite, graph=graph)
3571
# TODO: The old revid should be specified when merging tags,
3572
# so a tags implementation that versions tags can only
3573
# pull in the most recent changes. -- JRV20090506
3574
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3575
overwrite, ignore_master=not merge_tags_to_master)
3576
result.new_revno, result.new_revid = self.target.last_revision_info()
3578
result.master_branch = _hook_master
3579
result.local_branch = result.target_branch
3581
result.master_branch = result.target_branch
3582
result.local_branch = None
3584
for hook in Branch.hooks['post_pull']:
3397
master_branch.unlock()
3587
self.source.unlock()
3400
3591
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)