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
1639
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):
1642
def initialize(self, a_bzrdir, name=None, repository=None):
1611
1643
"""Create a branch of this format in a_bzrdir.
1613
1645
:param name: Name of the colocated branch to create.
1704
1773
These are all empty initially, because by default nothing should get
1707
Hooks.__init__(self)
1708
self.create_hook(HookPoint('set_rh',
1776
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1777
self.add_hook('set_rh',
1709
1778
"Invoked whenever the revision history has been set via "
1710
1779
"set_revision_history. The api signature is (branch, "
1711
1780
"revision_history), and the branch will be write-locked. "
1712
1781
"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',
1782
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1783
self.add_hook('open',
1715
1784
"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',
1785
"branch is opened.", (1, 8))
1786
self.add_hook('post_push',
1718
1787
"Called after a push operation completes. post_push is called "
1719
1788
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1720
"bzr client.", (0, 15), None))
1721
self.create_hook(HookPoint('post_pull',
1789
"bzr client.", (0, 15))
1790
self.add_hook('post_pull',
1722
1791
"Called after a pull operation completes. post_pull is called "
1723
1792
"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 "
1793
"bzr client.", (0, 15))
1794
self.add_hook('pre_commit',
1795
"Called after a commit is calculated but before it is "
1727
1796
"completed. pre_commit is called with (local, master, old_revno, "
1728
1797
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1729
1798
"). old_revid is NULL_REVISION for the first commit to a branch, "
1731
1800
"basis revision. hooks MUST NOT modify this delta. "
1732
1801
" future_tree is an in-memory tree obtained from "
1733
1802
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1804
self.add_hook('post_commit',
1736
1805
"Called in the bzr client after a commit has completed. "
1737
1806
"post_commit is called with (local, master, old_revno, old_revid, "
1738
1807
"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',
1808
"commit to a branch.", (0, 15))
1809
self.add_hook('post_uncommit',
1741
1810
"Called in the bzr client after an uncommit completes. "
1742
1811
"post_uncommit is called with (local, master, old_revno, "
1743
1812
"old_revid, new_revno, new_revid) where local is the local branch "
1744
1813
"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',
1814
"receives new_revno of 0, new_revid of None.", (0, 15))
1815
self.add_hook('pre_change_branch_tip',
1747
1816
"Called in bzr client and server before a change to the tip of a "
1748
1817
"branch is made. pre_change_branch_tip is called with a "
1749
1818
"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',
1819
"commit, uncommit will all trigger this hook.", (1, 6))
1820
self.add_hook('post_change_branch_tip',
1752
1821
"Called in bzr client and server after a change to the tip of a "
1753
1822
"branch is made. post_change_branch_tip is called with a "
1754
1823
"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',
1824
"commit, uncommit will all trigger this hook.", (1, 4))
1825
self.add_hook('transform_fallback_location',
1757
1826
"Called when a stacked branch is activating its fallback "
1758
1827
"locations. transform_fallback_location is called with (branch, "
1759
1828
"url), and should return a new url. Returning the same url "
1764
1833
"fallback locations have not been activated. When there are "
1765
1834
"multiple hooks installed for transform_fallback_location, "
1766
1835
"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."
1836
"The order is however undefined.", (1, 9))
1837
self.add_hook('automatic_tag_name',
1838
"Called to determine an automatic tag name for a revision. "
1770
1839
"automatic_tag_name is called with (branch, revision_id) and "
1771
1840
"should return a tag name or None if no tag name could be "
1772
1841
"determined. The first non-None tag name returned will be used.",
1774
self.create_hook(HookPoint('post_branch_init',
1843
self.add_hook('post_branch_init',
1775
1844
"Called after new branch initialization completes. "
1776
1845
"post_branch_init is called with a "
1777
1846
"bzrlib.branch.BranchInitHookParams. "
1778
1847
"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',
1848
"lightweight) will all trigger this hook.", (2, 2))
1849
self.add_hook('post_switch',
1781
1850
"Called after a checkout switches branch. "
1782
1851
"post_switch is called with a "
1783
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1852
"bzrlib.branch.SwitchHookParams.", (2, 2))
3182
3310
raise NotImplementedError(self.push)
3313
def copy_content_into(self, revision_id=None):
3314
"""Copy the content of source into target
3316
revision_id: if not None, the revision history in the new branch will
3317
be truncated to end with revision_id.
3319
raise NotImplementedError(self.copy_content_into)
3322
def fetch(self, stop_revision=None):
3325
:param stop_revision: Last revision to fetch
3327
raise NotImplementedError(self.fetch)
3185
3330
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
3331
"""InterBranch implementation that uses public Branch functions."""
3334
def is_compatible(klass, source, target):
3335
# GenericBranch uses the public API, so always compatible
3339
def _get_branch_formats_to_test(klass):
3340
return [(format_registry.get_default(), format_registry.get_default())]
3343
def unwrap_format(klass, format):
3344
if isinstance(format, remote.RemoteBranchFormat):
3345
format._ensure_real()
3346
return format._custom_format
3350
def copy_content_into(self, revision_id=None):
3351
"""Copy the content of source into target
3353
revision_id: if not None, the revision history in the new branch will
3354
be truncated to end with revision_id.
3356
self.source.update_references(self.target)
3357
self.source._synchronize_history(self.target, revision_id)
3359
parent = self.source.get_parent()
3360
except errors.InaccessibleParent, e:
3361
mutter('parent was not accessible to copy: %s', e)
3364
self.target.set_parent(parent)
3365
if self.source._push_should_merge_tags():
3366
self.source.tags.merge_to(self.target.tags)
3369
def fetch(self, stop_revision=None):
3370
if self.target.base == self.source.base:
3372
self.source.lock_read()
3374
fetch_spec_factory = fetch.FetchSpecFactory()
3375
fetch_spec_factory.source_branch = self.source
3376
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3377
fetch_spec_factory.source_repo = self.source.repository
3378
fetch_spec_factory.target_repo = self.target.repository
3379
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3380
fetch_spec = fetch_spec_factory.make_fetch_spec()
3381
return self.target.repository.fetch(self.source.repository,
3382
fetch_spec=fetch_spec)
3384
self.source.unlock()
3193
3387
def update_revisions(self, stop_revision=None, overwrite=False,
3195
3389
"""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()
3390
other_revno, other_last_revision = self.source.last_revision_info()
3391
stop_revno = None # unknown
3392
if stop_revision is None:
3393
stop_revision = other_last_revision
3394
if _mod_revision.is_null(stop_revision):
3395
# if there are no commits, we're done.
3397
stop_revno = other_revno
3399
# what's the current last revision, before we fetch [and change it
3401
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3402
# we fetch here so that we don't process data twice in the common
3403
# case of having something to pull, and so that the check for
3404
# already merged can operate on the just fetched graph, which will
3405
# be cached in memory.
3406
self.fetch(stop_revision=stop_revision)
3407
# Check to see if one is an ancestor of the other
3410
graph = self.target.repository.get_graph()
3411
if self.target._check_if_descendant_or_diverged(
3412
stop_revision, last_rev, graph, self.source):
3413
# stop_revision is a descendant of last_rev, but we aren't
3414
# overwriting, so we're done.
3416
if stop_revno is None:
3418
graph = self.target.repository.get_graph()
3419
this_revno, this_last_revision = \
3420
self.target.last_revision_info()
3421
stop_revno = graph.find_distance_to_null(stop_revision,
3422
[(other_last_revision, other_revno),
3423
(this_last_revision, this_revno)])
3424
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3427
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3428
possible_transports=None, run_hooks=True,
3238
3429
_override_hook_target=None, local=False):
3430
"""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
3432
:param run_hooks: Private parameter - if false, this branch
3244
3433
is being called because it's the master of the primary branch,
3245
3434
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.
3436
bound_location = self.target.get_bound_location()
3437
if local and not bound_location:
3252
3438
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()
3439
master_branch = None
3440
source_is_master = (self.source.user_url == bound_location)
3441
if not local and bound_location and not source_is_master:
3442
# not pulling from master, so we need to update master.
3443
master_branch = self.target.get_master_branch(possible_transports)
3444
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']:
3447
# pull from source into master.
3448
master_branch.pull(self.source, overwrite, stop_revision,
3450
return self._pull(overwrite,
3451
stop_revision, _hook_master=master_branch,
3452
run_hooks=run_hooks,
3453
_override_hook_target=_override_hook_target,
3454
merge_tags_to_master=not source_is_master)
3288
self.source.unlock()
3457
master_branch.unlock()
3291
3459
def push(self, overwrite=False, stop_revision=None,
3292
3460
_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.
3525
def _pull(self, overwrite=False, stop_revision=None,
3526
possible_transports=None, _hook_master=None, run_hooks=True,
3527
_override_hook_target=None, local=False,
3528
merge_tags_to_master=True):
3531
This function is the core worker, used by GenericInterBranch.pull to
3532
avoid duplication when pulling source->master and source->local.
3534
:param _hook_master: Private parameter - set the branch to
3535
be supplied as the master to pull hooks.
3374
3536
:param run_hooks: Private parameter - if false, this branch
3375
3537
is being called because it's the master of the primary branch,
3376
3538
so it should not run its hooks.
3539
is being called because it's the master of the primary branch,
3540
so it should not run its hooks.
3541
:param _override_hook_target: Private parameter - set the branch to be
3542
supplied as the target_branch to pull hooks.
3543
: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:
3545
# This type of branch can't be bound.
3380
3547
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()
3548
result = PullResult()
3549
result.source_branch = self.source
3550
if _override_hook_target is None:
3551
result.target_branch = self.target
3553
result.target_branch = _override_hook_target
3554
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)
3556
# We assume that during 'pull' the target repository is closer than
3558
self.source.update_references(self.target)
3559
graph = self.target.repository.get_graph(self.source.repository)
3560
# TODO: Branch formats should have a flag that indicates
3561
# that revno's are expensive, and pull() should honor that flag.
3563
result.old_revno, result.old_revid = \
3564
self.target.last_revision_info()
3565
self.target.update_revisions(self.source, stop_revision,
3566
overwrite=overwrite, graph=graph)
3567
# TODO: The old revid should be specified when merging tags,
3568
# so a tags implementation that versions tags can only
3569
# pull in the most recent changes. -- JRV20090506
3570
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3571
overwrite, ignore_master=not merge_tags_to_master)
3572
result.new_revno, result.new_revid = self.target.last_revision_info()
3574
result.master_branch = _hook_master
3575
result.local_branch = result.target_branch
3577
result.master_branch = result.target_branch
3578
result.local_branch = None
3580
for hook in Branch.hooks['post_pull']:
3397
master_branch.unlock()
3583
self.source.unlock()
3400
3587
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)