792
815
old_repository = self.repository
793
816
if len(old_repository._fallback_repositories) != 1:
794
817
raise AssertionError("can't cope with fallback repositories "
795
"of %r" % (self.repository,))
796
# unlock it, including unlocking the fallback
818
"of %r (fallbacks: %r)" % (old_repository,
819
old_repository._fallback_repositories))
820
# Open the new repository object.
821
# Repositories don't offer an interface to remove fallback
822
# repositories today; take the conceptually simpler option and just
823
# reopen it. We reopen it starting from the URL so that we
824
# get a separate connection for RemoteRepositories and can
825
# stream from one of them to the other. This does mean doing
826
# separate SSH connection setup, but unstacking is not a
827
# common operation so it's tolerable.
828
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
829
new_repository = new_bzrdir.find_repository()
830
if new_repository._fallback_repositories:
831
raise AssertionError("didn't expect %r to have "
832
"fallback_repositories"
833
% (self.repository,))
834
# Replace self.repository with the new repository.
835
# Do our best to transfer the lock state (i.e. lock-tokens and
836
# lock count) of self.repository to the new repository.
837
lock_token = old_repository.lock_write().repository_token
838
self.repository = new_repository
839
if isinstance(self, remote.RemoteBranch):
840
# Remote branches can have a second reference to the old
841
# repository that need to be replaced.
842
if self._real_branch is not None:
843
self._real_branch.repository = new_repository
844
self.repository.lock_write(token=lock_token)
845
if lock_token is not None:
846
old_repository.leave_lock_in_place()
797
847
old_repository.unlock()
848
if lock_token is not None:
849
# XXX: self.repository.leave_lock_in_place() before this
850
# function will not be preserved. Fortunately that doesn't
851
# affect the current default format (2a), and would be a
852
# corner-case anyway.
853
# - Andrew Bennetts, 2010/06/30
854
self.repository.dont_leave_lock_in_place()
858
old_repository.unlock()
859
except errors.LockNotHeld:
862
if old_lock_count == 0:
863
raise AssertionError(
864
'old_repository should have been locked at least once.')
865
for i in range(old_lock_count-1):
866
self.repository.lock_write()
867
# Fetch from the old repository into the new.
798
868
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
870
# XXX: If you unstack a branch while it has a working tree
819
871
# with a pending merge, the pending-merged revisions will no
820
872
# 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(),
874
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
875
except errors.TagsNotSupported:
876
tags_to_fetch = set()
877
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
878
old_repository, required_ids=[self.last_revision()],
879
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
880
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
829
882
old_repository.unlock()
1579
1648
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1580
lock_type='metadir', set_format=True):
1581
1650
"""Initialize a branch in a bzrdir, with specified files
1583
1652
:param a_bzrdir: The bzrdir to initialize the branch in
1584
1653
:param utf8_files: The files to create as a list of
1585
1654
(filename, content) tuples
1586
1655
: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
1656
:return: a branch in this format
1592
1658
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1593
1659
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
1660
control_files = lockable_files.LockableFiles(branch_transport,
1600
lock_name, lock_class)
1661
'lock', lockdir.LockDir)
1601
1662
control_files.create_lock()
1663
control_files.lock_write()
1603
control_files.lock_write()
1604
except errors.LockContention:
1605
if lock_type != 'branch4':
1611
1665
utf8_files += [('format', self.get_format_string())]
1613
1666
for (filename, content) in utf8_files:
1614
1667
branch_transport.put_bytes(
1615
1668
filename, content,
1616
1669
mode=a_bzrdir._get_file_mode())
1619
control_files.unlock()
1620
branch = self.open(a_bzrdir, name, _found=True)
1671
control_files.unlock()
1672
branch = self.open(a_bzrdir, name, _found=True,
1673
found_repository=repository)
1621
1674
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1624
def initialize(self, a_bzrdir, name=None):
1677
def initialize(self, a_bzrdir, name=None, repository=None):
1625
1678
"""Create a branch of this format in a_bzrdir.
1627
1680
:param name: Name of the colocated branch to create.
1718
1808
These are all empty initially, because by default nothing should get
1721
Hooks.__init__(self)
1722
self.create_hook(HookPoint('set_rh',
1811
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1812
self.add_hook('set_rh',
1723
1813
"Invoked whenever the revision history has been set via "
1724
1814
"set_revision_history. The api signature is (branch, "
1725
1815
"revision_history), and the branch will be write-locked. "
1726
1816
"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',
1817
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1818
self.add_hook('open',
1729
1819
"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',
1820
"branch is opened.", (1, 8))
1821
self.add_hook('post_push',
1732
1822
"Called after a push operation completes. post_push is called "
1733
1823
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1734
"bzr client.", (0, 15), None))
1735
self.create_hook(HookPoint('post_pull',
1824
"bzr client.", (0, 15))
1825
self.add_hook('post_pull',
1736
1826
"Called after a pull operation completes. post_pull is called "
1737
1827
"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 "
1828
"bzr client.", (0, 15))
1829
self.add_hook('pre_commit',
1830
"Called after a commit is calculated but before it is "
1741
1831
"completed. pre_commit is called with (local, master, old_revno, "
1742
1832
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1743
1833
"). old_revid is NULL_REVISION for the first commit to a branch, "
1745
1835
"basis revision. hooks MUST NOT modify this delta. "
1746
1836
" future_tree is an in-memory tree obtained from "
1747
1837
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1748
"tree.", (0,91), None))
1749
self.create_hook(HookPoint('post_commit',
1839
self.add_hook('post_commit',
1750
1840
"Called in the bzr client after a commit has completed. "
1751
1841
"post_commit is called with (local, master, old_revno, old_revid, "
1752
1842
"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',
1843
"commit to a branch.", (0, 15))
1844
self.add_hook('post_uncommit',
1755
1845
"Called in the bzr client after an uncommit completes. "
1756
1846
"post_uncommit is called with (local, master, old_revno, "
1757
1847
"old_revid, new_revno, new_revid) where local is the local branch "
1758
1848
"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',
1849
"receives new_revno of 0, new_revid of None.", (0, 15))
1850
self.add_hook('pre_change_branch_tip',
1761
1851
"Called in bzr client and server before a change to the tip of a "
1762
1852
"branch is made. pre_change_branch_tip is called with a "
1763
1853
"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',
1854
"commit, uncommit will all trigger this hook.", (1, 6))
1855
self.add_hook('post_change_branch_tip',
1766
1856
"Called in bzr client and server after a change to the tip of a "
1767
1857
"branch is made. post_change_branch_tip is called with a "
1768
1858
"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',
1859
"commit, uncommit will all trigger this hook.", (1, 4))
1860
self.add_hook('transform_fallback_location',
1771
1861
"Called when a stacked branch is activating its fallback "
1772
1862
"locations. transform_fallback_location is called with (branch, "
1773
1863
"url), and should return a new url. Returning the same url "
1778
1868
"fallback locations have not been activated. When there are "
1779
1869
"multiple hooks installed for transform_fallback_location, "
1780
1870
"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."
1871
"The order is however undefined.", (1, 9))
1872
self.add_hook('automatic_tag_name',
1873
"Called to determine an automatic tag name for a revision. "
1784
1874
"automatic_tag_name is called with (branch, revision_id) and "
1785
1875
"should return a tag name or None if no tag name could be "
1786
1876
"determined. The first non-None tag name returned will be used.",
1788
self.create_hook(HookPoint('post_branch_init',
1878
self.add_hook('post_branch_init',
1789
1879
"Called after new branch initialization completes. "
1790
1880
"post_branch_init is called with a "
1791
1881
"bzrlib.branch.BranchInitHookParams. "
1792
1882
"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',
1883
"lightweight) will all trigger this hook.", (2, 2))
1884
self.add_hook('post_switch',
1795
1885
"Called after a checkout switches branch. "
1796
1886
"post_switch is called with a "
1797
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
1887
"bzrlib.branch.SwitchHookParams.", (2, 2))
3225
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, fetch_spec=None):
3325
:param stop_revision: Last revision to fetch
3326
:param fetch_spec: Fetch spec.
3328
raise NotImplementedError(self.fetch)
3228
3331
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
3332
"""InterBranch implementation that uses public Branch functions."""
3335
def is_compatible(klass, source, target):
3336
# GenericBranch uses the public API, so always compatible
3340
def _get_branch_formats_to_test(klass):
3341
return [(format_registry.get_default(), format_registry.get_default())]
3344
def unwrap_format(klass, format):
3345
if isinstance(format, remote.RemoteBranchFormat):
3346
format._ensure_real()
3347
return format._custom_format
3351
def copy_content_into(self, revision_id=None):
3352
"""Copy the content of source into target
3354
revision_id: if not None, the revision history in the new branch will
3355
be truncated to end with revision_id.
3357
self.source.update_references(self.target)
3358
self.source._synchronize_history(self.target, revision_id)
3360
parent = self.source.get_parent()
3361
except errors.InaccessibleParent, e:
3362
mutter('parent was not accessible to copy: %s', e)
3365
self.target.set_parent(parent)
3366
if self.source._push_should_merge_tags():
3367
self.source.tags.merge_to(self.target.tags)
3370
def fetch(self, stop_revision=None, fetch_spec=None):
3371
if fetch_spec is not None and stop_revision is not None:
3372
raise AssertionError(
3373
"fetch_spec and last_revision are mutually exclusive.")
3374
if self.target.base == self.source.base:
3376
self.source.lock_read()
3378
if stop_revision is None and fetch_spec is None:
3379
stop_revision = self.source.last_revision()
3380
stop_revision = _mod_revision.ensure_null(stop_revision)
3381
return self.target.repository.fetch(self.source.repository,
3382
revision_id=stop_revision, fetch_spec=fetch_spec)
3384
self.source.unlock()
3236
3387
def update_revisions(self, stop_revision=None, overwrite=False,
3388
graph=None, fetch_tags=True):
3238
3389
"""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()
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.
3407
fetch_spec_factory = fetch.FetchSpecFactory()
3408
fetch_spec_factory.source_branch = self.source
3409
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3410
fetch_spec_factory.source_repo = self.source.repository
3411
fetch_spec_factory.target_repo = self.target.repository
3412
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3413
fetch_spec = fetch_spec_factory.make_fetch_spec()
3415
fetch_spec = _mod_graph.NotInOtherForRevs(self.target.repository,
3416
self.source.repository, revision_ids=[stop_revision]).execute()
3417
self.target.fetch(self.source, fetch_spec=fetch_spec)
3418
# Check to see if one is an ancestor of the other
3421
graph = self.target.repository.get_graph()
3422
if self.target._check_if_descendant_or_diverged(
3423
stop_revision, last_rev, graph, self.source):
3424
# stop_revision is a descendant of last_rev, but we aren't
3425
# overwriting, so we're done.
3427
if stop_revno is None:
3429
graph = self.target.repository.get_graph()
3430
this_revno, this_last_revision = \
3431
self.target.last_revision_info()
3432
stop_revno = graph.find_distance_to_null(stop_revision,
3433
[(other_last_revision, other_revno),
3434
(this_last_revision, this_revno)])
3435
self.target.set_last_revision_info(stop_revno, stop_revision)
3279
3438
def pull(self, overwrite=False, stop_revision=None,
3280
possible_transports=None, _hook_master=None, run_hooks=True,
3439
possible_transports=None, run_hooks=True,
3281
3440
_override_hook_target=None, local=False):
3441
"""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
3443
:param run_hooks: Private parameter - if false, this branch
3287
3444
is being called because it's the master of the primary branch,
3288
3445
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.
3447
bound_location = self.target.get_bound_location()
3448
if local and not bound_location:
3295
3449
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()
3450
master_branch = None
3451
source_is_master = (self.source.user_url == bound_location)
3452
if not local and bound_location and not source_is_master:
3453
# not pulling from master, so we need to update master.
3454
master_branch = self.target.get_master_branch(possible_transports)
3455
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']:
3458
# pull from source into master.
3459
master_branch.pull(self.source, overwrite, stop_revision,
3461
return self._pull(overwrite,
3462
stop_revision, _hook_master=master_branch,
3463
run_hooks=run_hooks,
3464
_override_hook_target=_override_hook_target,
3465
merge_tags_to_master=not source_is_master)
3331
self.source.unlock()
3468
master_branch.unlock()
3334
3470
def push(self, overwrite=False, stop_revision=None,
3335
3471
_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.
3536
def _pull(self, overwrite=False, stop_revision=None,
3537
possible_transports=None, _hook_master=None, run_hooks=True,
3538
_override_hook_target=None, local=False,
3539
merge_tags_to_master=True):
3542
This function is the core worker, used by GenericInterBranch.pull to
3543
avoid duplication when pulling source->master and source->local.
3545
:param _hook_master: Private parameter - set the branch to
3546
be supplied as the master to pull hooks.
3417
3547
:param run_hooks: Private parameter - if false, this branch
3418
3548
is being called because it's the master of the primary branch,
3419
3549
so it should not run its hooks.
3550
is being called because it's the master of the primary branch,
3551
so it should not run its hooks.
3552
:param _override_hook_target: Private parameter - set the branch to be
3553
supplied as the target_branch to pull hooks.
3554
: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:
3556
# This type of branch can't be bound.
3423
3558
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()
3559
result = PullResult()
3560
result.source_branch = self.source
3561
if _override_hook_target is None:
3562
result.target_branch = self.target
3564
result.target_branch = _override_hook_target
3565
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)
3567
# We assume that during 'pull' the target repository is closer than
3569
self.source.update_references(self.target)
3570
graph = self.target.repository.get_graph(self.source.repository)
3571
# TODO: Branch formats should have a flag that indicates
3572
# that revno's are expensive, and pull() should honor that flag.
3574
result.old_revno, result.old_revid = \
3575
self.target.last_revision_info()
3576
self.target.update_revisions(self.source, stop_revision,
3577
overwrite=overwrite, graph=graph)
3578
# TODO: The old revid should be specified when merging tags,
3579
# so a tags implementation that versions tags can only
3580
# pull in the most recent changes. -- JRV20090506
3581
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3582
overwrite, ignore_master=not merge_tags_to_master)
3583
result.new_revno, result.new_revid = self.target.last_revision_info()
3585
result.master_branch = _hook_master
3586
result.local_branch = result.target_branch
3588
result.master_branch = result.target_branch
3589
result.local_branch = None
3591
for hook in Branch.hooks['post_pull']:
3440
master_branch.unlock()
3594
self.source.unlock()
3443
3598
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)