782
814
old_repository = self.repository
783
815
if len(old_repository._fallback_repositories) != 1:
784
816
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# 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()
787
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.
788
867
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
869
# XXX: If you unstack a branch while it has a working tree
809
870
# with a pending merge, the pending-merged revisions will no
810
871
# 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(),
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)
819
881
old_repository.unlock()
1562
1644
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):
1647
def initialize(self, a_bzrdir, name=None, repository=None):
1611
1648
"""Create a branch of this format in a_bzrdir.
1613
1650
:param name: Name of the colocated branch to create.
1704
1778
These are all empty initially, because by default nothing should get
1707
Hooks.__init__(self)
1708
self.create_hook(HookPoint('set_rh',
1781
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1782
self.add_hook('set_rh',
1709
1783
"Invoked whenever the revision history has been set via "
1710
1784
"set_revision_history. The api signature is (branch, "
1711
1785
"revision_history), and the branch will be write-locked. "
1712
1786
"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',
1787
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1788
self.add_hook('open',
1715
1789
"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',
1790
"branch is opened.", (1, 8))
1791
self.add_hook('post_push',
1718
1792
"Called after a push operation completes. post_push is called "
1719
1793
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1720
"bzr client.", (0, 15), None))
1721
self.create_hook(HookPoint('post_pull',
1794
"bzr client.", (0, 15))
1795
self.add_hook('post_pull',
1722
1796
"Called after a pull operation completes. post_pull is called "
1723
1797
"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 "
1798
"bzr client.", (0, 15))
1799
self.add_hook('pre_commit',
1800
"Called after a commit is calculated but before it is "
1727
1801
"completed. pre_commit is called with (local, master, old_revno, "
1728
1802
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1729
1803
"). old_revid is NULL_REVISION for the first commit to a branch, "
1731
1805
"basis revision. hooks MUST NOT modify this delta. "
1732
1806
" future_tree is an in-memory tree obtained from "
1733
1807
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1809
self.add_hook('post_commit',
1736
1810
"Called in the bzr client after a commit has completed. "
1737
1811
"post_commit is called with (local, master, old_revno, old_revid, "
1738
1812
"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',
1813
"commit to a branch.", (0, 15))
1814
self.add_hook('post_uncommit',
1741
1815
"Called in the bzr client after an uncommit completes. "
1742
1816
"post_uncommit is called with (local, master, old_revno, "
1743
1817
"old_revid, new_revno, new_revid) where local is the local branch "
1744
1818
"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',
1819
"receives new_revno of 0, new_revid of None.", (0, 15))
1820
self.add_hook('pre_change_branch_tip',
1747
1821
"Called in bzr client and server before a change to the tip of a "
1748
1822
"branch is made. pre_change_branch_tip is called with a "
1749
1823
"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',
1824
"commit, uncommit will all trigger this hook.", (1, 6))
1825
self.add_hook('post_change_branch_tip',
1752
1826
"Called in bzr client and server after a change to the tip of a "
1753
1827
"branch is made. post_change_branch_tip is called with a "
1754
1828
"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',
1829
"commit, uncommit will all trigger this hook.", (1, 4))
1830
self.add_hook('transform_fallback_location',
1757
1831
"Called when a stacked branch is activating its fallback "
1758
1832
"locations. transform_fallback_location is called with (branch, "
1759
1833
"url), and should return a new url. Returning the same url "
1764
1838
"fallback locations have not been activated. When there are "
1765
1839
"multiple hooks installed for transform_fallback_location, "
1766
1840
"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."
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. "
1770
1844
"automatic_tag_name is called with (branch, revision_id) and "
1771
1845
"should return a tag name or None if no tag name could be "
1772
1846
"determined. The first non-None tag name returned will be used.",
1774
self.create_hook(HookPoint('post_branch_init',
1848
self.add_hook('post_branch_init',
1775
1849
"Called after new branch initialization completes. "
1776
1850
"post_branch_init is called with a "
1777
1851
"bzrlib.branch.BranchInitHookParams. "
1778
1852
"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',
1853
"lightweight) will all trigger this hook.", (2, 2))
1854
self.add_hook('post_switch',
1781
1855
"Called after a checkout switches branch. "
1782
1856
"post_switch is called with a "
1783
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1857
"bzrlib.branch.SwitchHookParams.", (2, 2))
3182
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)
3185
3332
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
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()
3193
3388
def update_revisions(self, stop_revision=None, overwrite=False,
3389
graph=None, fetch_tags=True):
3195
3390
"""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()
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)
3236
3439
def pull(self, overwrite=False, stop_revision=None,
3237
possible_transports=None, _hook_master=None, run_hooks=True,
3440
possible_transports=None, run_hooks=True,
3238
3441
_override_hook_target=None, local=False):
3442
"""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
3444
:param run_hooks: Private parameter - if false, this branch
3244
3445
is being called because it's the master of the primary branch,
3245
3446
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.
3448
bound_location = self.target.get_bound_location()
3449
if local and not bound_location:
3252
3450
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()
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()
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']:
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)
3288
self.source.unlock()
3469
master_branch.unlock()
3291
3471
def push(self, overwrite=False, stop_revision=None,
3292
3472
_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.
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.
3374
3548
:param run_hooks: Private parameter - if false, this branch
3375
3549
is being called because it's the master of the primary branch,
3376
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.
3378
bound_location = self.target.get_bound_location()
3379
if local and not bound_location:
3557
# This type of branch can't be bound.
3380
3559
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()
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()
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)
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']:
3397
master_branch.unlock()
3595
self.source.unlock()
3400
3599
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)