782
859
old_repository = self.repository
783
860
if len(old_repository._fallback_repositories) != 1:
784
861
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
862
"of %r (fallbacks: %r)" % (old_repository,
863
old_repository._fallback_repositories))
864
# Open the new repository object.
865
# Repositories don't offer an interface to remove fallback
866
# repositories today; take the conceptually simpler option and just
867
# reopen it. We reopen it starting from the URL so that we
868
# get a separate connection for RemoteRepositories and can
869
# stream from one of them to the other. This does mean doing
870
# separate SSH connection setup, but unstacking is not a
871
# common operation so it's tolerable.
872
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
873
new_repository = new_bzrdir.find_repository()
874
if new_repository._fallback_repositories:
875
raise AssertionError("didn't expect %r to have "
876
"fallback_repositories"
877
% (self.repository,))
878
# Replace self.repository with the new repository.
879
# Do our best to transfer the lock state (i.e. lock-tokens and
880
# lock count) of self.repository to the new repository.
881
lock_token = old_repository.lock_write().repository_token
882
self.repository = new_repository
883
if isinstance(self, remote.RemoteBranch):
884
# Remote branches can have a second reference to the old
885
# repository that need to be replaced.
886
if self._real_branch is not None:
887
self._real_branch.repository = new_repository
888
self.repository.lock_write(token=lock_token)
889
if lock_token is not None:
890
old_repository.leave_lock_in_place()
787
891
old_repository.unlock()
892
if lock_token is not None:
893
# XXX: self.repository.leave_lock_in_place() before this
894
# function will not be preserved. Fortunately that doesn't
895
# affect the current default format (2a), and would be a
896
# corner-case anyway.
897
# - Andrew Bennetts, 2010/06/30
898
self.repository.dont_leave_lock_in_place()
902
old_repository.unlock()
903
except errors.LockNotHeld:
906
if old_lock_count == 0:
907
raise AssertionError(
908
'old_repository should have been locked at least once.')
909
for i in range(old_lock_count-1):
910
self.repository.lock_write()
911
# Fetch from the old repository into the new.
788
912
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
914
# XXX: If you unstack a branch while it has a working tree
809
915
# with a pending merge, the pending-merged revisions will no
810
916
# 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(),
918
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
919
except errors.TagsNotSupported:
920
tags_to_fetch = set()
921
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
922
old_repository, required_ids=[self.last_revision()],
923
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
924
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
819
926
old_repository.unlock()
917
1031
:return: A tuple (revno, revision_id).
919
1033
if self._last_revision_info_cache is None:
920
self._last_revision_info_cache = self._last_revision_info()
1034
self._last_revision_info_cache = self._read_last_revision_info()
921
1035
return self._last_revision_info_cache
923
def _last_revision_info(self):
924
rh = self.revision_history()
927
return (revno, rh[-1])
929
return (0, _mod_revision.NULL_REVISION)
931
@deprecated_method(deprecated_in((1, 6, 0)))
932
def missing_revisions(self, other, stop_revision=None):
933
"""Return a list of new revisions that would perfectly fit.
935
If self and other have not diverged, return a list of the revisions
936
present in other, but missing from self.
938
self_history = self.revision_history()
939
self_len = len(self_history)
940
other_history = other.revision_history()
941
other_len = len(other_history)
942
common_index = min(self_len, other_len) -1
943
if common_index >= 0 and \
944
self_history[common_index] != other_history[common_index]:
945
raise errors.DivergedBranches(self, other)
947
if stop_revision is None:
948
stop_revision = other_len
950
if stop_revision > other_len:
951
raise errors.NoSuchRevision(self, stop_revision)
952
return other_history[self_len:stop_revision]
955
def update_revisions(self, other, stop_revision=None, overwrite=False,
957
"""Pull in new perfect-fit revisions.
959
:param other: Another Branch to pull from
960
:param stop_revision: Updated until the given revision
961
:param overwrite: Always set the branch pointer, rather than checking
962
to see if it is a proper descendant.
963
:param graph: A Graph object that can be used to query history
964
information. This can be None.
967
return InterBranch.get(other, self).update_revisions(stop_revision,
1037
def _read_last_revision_info(self):
1038
raise NotImplementedError(self._read_last_revision_info)
1040
@deprecated_method(deprecated_in((2, 4, 0)))
970
1041
def import_last_revision_info(self, source_repo, revno, revid):
971
1042
"""Set the last revision info, importing from another repo if necessary.
973
This is used by the bound branch code to upload a revision to
974
the master branch first before updating the tip of the local branch.
976
1044
:param source_repo: Source repository to optionally fetch from
977
1045
:param revno: Revision number of the new tip
978
1046
:param revid: Revision id of the new tip
1704
1785
These are all empty initially, because by default nothing should get
1707
Hooks.__init__(self)
1708
self.create_hook(HookPoint('set_rh',
1788
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1789
self.add_hook('set_rh',
1709
1790
"Invoked whenever the revision history has been set via "
1710
1791
"set_revision_history. The api signature is (branch, "
1711
1792
"revision_history), and the branch will be write-locked. "
1712
1793
"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',
1794
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1795
self.add_hook('open',
1715
1796
"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',
1797
"branch is opened.", (1, 8))
1798
self.add_hook('post_push',
1718
1799
"Called after a push operation completes. post_push is called "
1719
1800
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1720
"bzr client.", (0, 15), None))
1721
self.create_hook(HookPoint('post_pull',
1801
"bzr client.", (0, 15))
1802
self.add_hook('post_pull',
1722
1803
"Called after a pull operation completes. post_pull is called "
1723
1804
"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 "
1805
"bzr client.", (0, 15))
1806
self.add_hook('pre_commit',
1807
"Called after a commit is calculated but before it is "
1727
1808
"completed. pre_commit is called with (local, master, old_revno, "
1728
1809
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1729
1810
"). old_revid is NULL_REVISION for the first commit to a branch, "
1731
1812
"basis revision. hooks MUST NOT modify this delta. "
1732
1813
" future_tree is an in-memory tree obtained from "
1733
1814
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1816
self.add_hook('post_commit',
1736
1817
"Called in the bzr client after a commit has completed. "
1737
1818
"post_commit is called with (local, master, old_revno, old_revid, "
1738
1819
"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',
1820
"commit to a branch.", (0, 15))
1821
self.add_hook('post_uncommit',
1741
1822
"Called in the bzr client after an uncommit completes. "
1742
1823
"post_uncommit is called with (local, master, old_revno, "
1743
1824
"old_revid, new_revno, new_revid) where local is the local branch "
1744
1825
"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',
1826
"receives new_revno of 0, new_revid of None.", (0, 15))
1827
self.add_hook('pre_change_branch_tip',
1747
1828
"Called in bzr client and server before a change to the tip of a "
1748
1829
"branch is made. pre_change_branch_tip is called with a "
1749
1830
"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',
1831
"commit, uncommit will all trigger this hook.", (1, 6))
1832
self.add_hook('post_change_branch_tip',
1752
1833
"Called in bzr client and server after a change to the tip of a "
1753
1834
"branch is made. post_change_branch_tip is called with a "
1754
1835
"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',
1836
"commit, uncommit will all trigger this hook.", (1, 4))
1837
self.add_hook('transform_fallback_location',
1757
1838
"Called when a stacked branch is activating its fallback "
1758
1839
"locations. transform_fallback_location is called with (branch, "
1759
1840
"url), and should return a new url. Returning the same url "
2387
2500
"""See Branch.print_file."""
2388
2501
return self.repository.print_file(file, revision_id)
2390
def _write_revision_history(self, history):
2391
"""Factored out of set_revision_history.
2393
This performs the actual writing to disk.
2394
It is intended to be called by BzrBranch5.set_revision_history."""
2395
self._transport.put_bytes(
2396
'revision-history', '\n'.join(history),
2397
mode=self.bzrdir._get_file_mode())
2400
def set_revision_history(self, rev_history):
2401
"""See Branch.set_revision_history."""
2402
if 'evil' in debug.debug_flags:
2403
mutter_callsite(3, "set_revision_history scales with history.")
2404
check_not_reserved_id = _mod_revision.check_not_reserved_id
2405
for rev_id in rev_history:
2406
check_not_reserved_id(rev_id)
2407
if Branch.hooks['post_change_branch_tip']:
2408
# Don't calculate the last_revision_info() if there are no hooks
2410
old_revno, old_revid = self.last_revision_info()
2411
if len(rev_history) == 0:
2412
revid = _mod_revision.NULL_REVISION
2414
revid = rev_history[-1]
2415
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2416
self._write_revision_history(rev_history)
2417
self._clear_cached_state()
2418
self._cache_revision_history(rev_history)
2419
for hook in Branch.hooks['set_rh']:
2420
hook(self, rev_history)
2421
if Branch.hooks['post_change_branch_tip']:
2422
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2424
def _synchronize_history(self, destination, revision_id):
2425
"""Synchronize last revision and revision history between branches.
2427
This version is most efficient when the destination is also a
2428
BzrBranch5, but works for BzrBranch6 as long as the revision
2429
history is the true lefthand parent history, and all of the revisions
2430
are in the destination's repository. If not, set_revision_history
2433
:param destination: The branch to copy the history into
2434
:param revision_id: The revision-id to truncate history at. May
2435
be None to copy complete history.
2437
if not isinstance(destination._format, BzrBranchFormat5):
2438
super(BzrBranch, self)._synchronize_history(
2439
destination, revision_id)
2441
if revision_id == _mod_revision.NULL_REVISION:
2444
new_history = self.revision_history()
2445
if revision_id is not None and new_history != []:
2447
new_history = new_history[:new_history.index(revision_id) + 1]
2449
rev = self.repository.get_revision(revision_id)
2450
new_history = rev.get_history(self.repository)[1:]
2451
destination.set_revision_history(new_history)
2453
2503
@needs_write_lock
2454
2504
def set_last_revision_info(self, revno, revision_id):
2455
"""Set the last revision of this branch.
2457
The caller is responsible for checking that the revno is correct
2458
for this revision id.
2460
It may be possible to set the branch last revision to an id not
2461
present in the repository. However, branches can also be
2462
configured to check constraints on history, in which case this may not
2505
if not revision_id or not isinstance(revision_id, basestring):
2506
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
2465
2507
revision_id = _mod_revision.ensure_null(revision_id)
2466
# this old format stores the full history, but this api doesn't
2467
# provide it, so we must generate, and might as well check it's
2469
history = self._lefthand_history(revision_id)
2470
if len(history) != revno:
2471
raise AssertionError('%d != %d' % (len(history), revno))
2472
self.set_revision_history(history)
2474
def _gen_revision_history(self):
2475
history = self._transport.get_bytes('revision-history').split('\n')
2476
if history[-1:] == ['']:
2477
# There shouldn't be a trailing newline, but just in case.
2482
def generate_revision_history(self, revision_id, last_rev=None,
2484
"""Create a new revision history that will finish with revision_id.
2486
:param revision_id: the new tip to use.
2487
:param last_rev: The previous last_revision. If not None, then this
2488
must be a ancestory of revision_id, or DivergedBranches is raised.
2489
:param other_branch: The other branch that DivergedBranches should
2490
raise with respect to.
2492
self.set_revision_history(self._lefthand_history(revision_id,
2493
last_rev, other_branch))
2508
old_revno, old_revid = self.last_revision_info()
2509
if self._get_append_revisions_only():
2510
self._check_history_violation(revision_id)
2511
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2512
self._write_last_revision_info(revno, revision_id)
2513
self._clear_cached_state()
2514
self._last_revision_info_cache = revno, revision_id
2515
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2495
2517
def basis_tree(self):
2496
2518
"""See Branch.basis_tree."""
2645
class BzrBranch8(BzrBranch5):
2639
def _read_last_revision_info(self):
2640
revision_string = self._transport.get_bytes('last-revision')
2641
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2642
revision_id = cache_utf8.get_cached_utf8(revision_id)
2644
return revno, revision_id
2646
def _write_last_revision_info(self, revno, revision_id):
2647
"""Simply write out the revision id, with no checks.
2649
Use set_last_revision_info to perform this safely.
2651
Does not update the revision_history cache.
2653
revision_id = _mod_revision.ensure_null(revision_id)
2654
out_string = '%d %s\n' % (revno, revision_id)
2655
self._transport.put_bytes('last-revision', out_string,
2656
mode=self.bzrdir._get_file_mode())
2659
class FullHistoryBzrBranch(BzrBranch):
2660
"""Bzr branch which contains the full revision history."""
2663
def set_last_revision_info(self, revno, revision_id):
2664
if not revision_id or not isinstance(revision_id, basestring):
2665
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
2666
revision_id = _mod_revision.ensure_null(revision_id)
2667
# this old format stores the full history, but this api doesn't
2668
# provide it, so we must generate, and might as well check it's
2670
history = self._lefthand_history(revision_id)
2671
if len(history) != revno:
2672
raise AssertionError('%d != %d' % (len(history), revno))
2673
self._set_revision_history(history)
2675
def _read_last_revision_info(self):
2676
rh = self.revision_history()
2679
return (revno, rh[-1])
2681
return (0, _mod_revision.NULL_REVISION)
2683
@deprecated_method(deprecated_in((2, 4, 0)))
2685
def set_revision_history(self, rev_history):
2686
"""See Branch.set_revision_history."""
2687
self._set_revision_history(rev_history)
2689
def _set_revision_history(self, rev_history):
2690
if 'evil' in debug.debug_flags:
2691
mutter_callsite(3, "set_revision_history scales with history.")
2692
check_not_reserved_id = _mod_revision.check_not_reserved_id
2693
for rev_id in rev_history:
2694
check_not_reserved_id(rev_id)
2695
if Branch.hooks['post_change_branch_tip']:
2696
# Don't calculate the last_revision_info() if there are no hooks
2698
old_revno, old_revid = self.last_revision_info()
2699
if len(rev_history) == 0:
2700
revid = _mod_revision.NULL_REVISION
2702
revid = rev_history[-1]
2703
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2704
self._write_revision_history(rev_history)
2705
self._clear_cached_state()
2706
self._cache_revision_history(rev_history)
2707
for hook in Branch.hooks['set_rh']:
2708
hook(self, rev_history)
2709
if Branch.hooks['post_change_branch_tip']:
2710
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2712
def _write_revision_history(self, history):
2713
"""Factored out of set_revision_history.
2715
This performs the actual writing to disk.
2716
It is intended to be called by set_revision_history."""
2717
self._transport.put_bytes(
2718
'revision-history', '\n'.join(history),
2719
mode=self.bzrdir._get_file_mode())
2721
def _gen_revision_history(self):
2722
history = self._transport.get_bytes('revision-history').split('\n')
2723
if history[-1:] == ['']:
2724
# There shouldn't be a trailing newline, but just in case.
2728
def _synchronize_history(self, destination, revision_id):
2729
if not isinstance(destination, FullHistoryBzrBranch):
2730
super(BzrBranch, self)._synchronize_history(
2731
destination, revision_id)
2733
if revision_id == _mod_revision.NULL_REVISION:
2736
new_history = self.revision_history()
2737
if revision_id is not None and new_history != []:
2739
new_history = new_history[:new_history.index(revision_id) + 1]
2741
rev = self.repository.get_revision(revision_id)
2742
new_history = rev.get_history(self.repository)[1:]
2743
destination._set_revision_history(new_history)
2746
def generate_revision_history(self, revision_id, last_rev=None,
2748
"""Create a new revision history that will finish with revision_id.
2750
:param revision_id: the new tip to use.
2751
:param last_rev: The previous last_revision. If not None, then this
2752
must be a ancestory of revision_id, or DivergedBranches is raised.
2753
:param other_branch: The other branch that DivergedBranches should
2754
raise with respect to.
2756
self._set_revision_history(self._lefthand_history(revision_id,
2757
last_rev, other_branch))
2760
class BzrBranch5(FullHistoryBzrBranch):
2761
"""A format 5 branch. This supports new features over plain branches.
2763
It has support for a master_branch which is the data for bound branches.
2767
class BzrBranch8(BzrBranch):
2646
2768
"""A branch that stores tree-reference locations."""
2648
2770
def _open_hook(self):
2674
2796
self._last_revision_info_cache = None
2675
2797
self._reference_info = None
2677
def _last_revision_info(self):
2678
revision_string = self._transport.get_bytes('last-revision')
2679
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2680
revision_id = cache_utf8.get_cached_utf8(revision_id)
2682
return revno, revision_id
2684
def _write_last_revision_info(self, revno, revision_id):
2685
"""Simply write out the revision id, with no checks.
2687
Use set_last_revision_info to perform this safely.
2689
Does not update the revision_history cache.
2690
Intended to be called by set_last_revision_info and
2691
_write_revision_history.
2693
revision_id = _mod_revision.ensure_null(revision_id)
2694
out_string = '%d %s\n' % (revno, revision_id)
2695
self._transport.put_bytes('last-revision', out_string,
2696
mode=self.bzrdir._get_file_mode())
2699
def set_last_revision_info(self, revno, revision_id):
2700
revision_id = _mod_revision.ensure_null(revision_id)
2701
old_revno, old_revid = self.last_revision_info()
2702
if self._get_append_revisions_only():
2703
self._check_history_violation(revision_id)
2704
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2705
self._write_last_revision_info(revno, revision_id)
2706
self._clear_cached_state()
2707
self._last_revision_info_cache = revno, revision_id
2708
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2710
def _synchronize_history(self, destination, revision_id):
2711
"""Synchronize last revision and revision history between branches.
2713
:see: Branch._synchronize_history
2715
# XXX: The base Branch has a fast implementation of this method based
2716
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2717
# that uses set_revision_history. This class inherits from BzrBranch5,
2718
# but wants the fast implementation, so it calls
2719
# Branch._synchronize_history directly.
2720
Branch._synchronize_history(self, destination, revision_id)
2722
2799
def _check_history_violation(self, revision_id):
2723
last_revision = _mod_revision.ensure_null(self.last_revision())
2800
current_revid = self.last_revision()
2801
last_revision = _mod_revision.ensure_null(current_revid)
2724
2802
if _mod_revision.is_null(last_revision):
2726
if last_revision not in self._lefthand_history(revision_id):
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2804
graph = self.repository.get_graph()
2805
for lh_ancestor in graph.iter_lefthand_ancestry(revision_id):
2806
if lh_ancestor == current_revid:
2808
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2729
2810
def _gen_revision_history(self):
2730
2811
"""Generate the revision history from last revision
3182
3216
raise NotImplementedError(self.push)
3219
def copy_content_into(self, revision_id=None):
3220
"""Copy the content of source into target
3222
revision_id: if not None, the revision history in the new branch will
3223
be truncated to end with revision_id.
3225
raise NotImplementedError(self.copy_content_into)
3228
def fetch(self, stop_revision=None, limit=None):
3231
:param stop_revision: Last revision to fetch
3232
:param limit: Optional rough limit of revisions to fetch
3234
raise NotImplementedError(self.fetch)
3185
3237
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
3193
def update_revisions(self, stop_revision=None, overwrite=False,
3195
"""See InterBranch.update_revisions()."""
3238
"""InterBranch implementation that uses public Branch functions."""
3241
def is_compatible(klass, source, target):
3242
# GenericBranch uses the public API, so always compatible
3246
def _get_branch_formats_to_test(klass):
3247
return [(format_registry.get_default(), format_registry.get_default())]
3250
def unwrap_format(klass, format):
3251
if isinstance(format, remote.RemoteBranchFormat):
3252
format._ensure_real()
3253
return format._custom_format
3257
def copy_content_into(self, revision_id=None):
3258
"""Copy the content of source into target
3260
revision_id: if not None, the revision history in the new branch will
3261
be truncated to end with revision_id.
3263
self.source.update_references(self.target)
3264
self.source._synchronize_history(self.target, revision_id)
3266
parent = self.source.get_parent()
3267
except errors.InaccessibleParent, e:
3268
mutter('parent was not accessible to copy: %s', e)
3271
self.target.set_parent(parent)
3272
if self.source._push_should_merge_tags():
3273
self.source.tags.merge_to(self.target.tags)
3276
def fetch(self, stop_revision=None, limit=None):
3277
if self.target.base == self.source.base:
3196
3279
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)
3281
fetch_spec_factory = fetch.FetchSpecFactory()
3282
fetch_spec_factory.source_branch = self.source
3283
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3284
fetch_spec_factory.source_repo = self.source.repository
3285
fetch_spec_factory.target_repo = self.target.repository
3286
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3287
fetch_spec_factory.limit = limit
3288
fetch_spec = fetch_spec_factory.make_fetch_spec()
3289
return self.target.repository.fetch(self.source.repository,
3290
fetch_spec=fetch_spec)
3234
3292
self.source.unlock()
3295
def _update_revisions(self, stop_revision=None, overwrite=False,
3297
other_revno, other_last_revision = self.source.last_revision_info()
3298
stop_revno = None # unknown
3299
if stop_revision is None:
3300
stop_revision = other_last_revision
3301
if _mod_revision.is_null(stop_revision):
3302
# if there are no commits, we're done.
3304
stop_revno = other_revno
3306
# what's the current last revision, before we fetch [and change it
3308
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3309
# we fetch here so that we don't process data twice in the common
3310
# case of having something to pull, and so that the check for
3311
# already merged can operate on the just fetched graph, which will
3312
# be cached in memory.
3313
self.fetch(stop_revision=stop_revision)
3314
# Check to see if one is an ancestor of the other
3317
graph = self.target.repository.get_graph()
3318
if self.target._check_if_descendant_or_diverged(
3319
stop_revision, last_rev, graph, self.source):
3320
# stop_revision is a descendant of last_rev, but we aren't
3321
# overwriting, so we're done.
3323
if stop_revno is None:
3325
graph = self.target.repository.get_graph()
3326
this_revno, this_last_revision = \
3327
self.target.last_revision_info()
3328
stop_revno = graph.find_distance_to_null(stop_revision,
3329
[(other_last_revision, other_revno),
3330
(this_last_revision, this_revno)])
3331
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3334
def pull(self, overwrite=False, stop_revision=None,
3335
possible_transports=None, run_hooks=True,
3336
_override_hook_target=None, local=False):
3337
"""Pull from source into self, updating my master if any.
3339
:param run_hooks: Private parameter - if false, this branch
3340
is being called because it's the master of the primary branch,
3341
so it should not run its hooks.
3343
bound_location = self.target.get_bound_location()
3344
if local and not bound_location:
3345
raise errors.LocalRequiresBoundBranch()
3346
master_branch = None
3347
source_is_master = (self.source.user_url == bound_location)
3348
if not local and bound_location and not source_is_master:
3349
# not pulling from master, so we need to update master.
3350
master_branch = self.target.get_master_branch(possible_transports)
3351
master_branch.lock_write()
3354
# pull from source into master.
3355
master_branch.pull(self.source, overwrite, stop_revision,
3357
return self._pull(overwrite,
3358
stop_revision, _hook_master=master_branch,
3359
run_hooks=run_hooks,
3360
_override_hook_target=_override_hook_target,
3361
merge_tags_to_master=not source_is_master)
3364
master_branch.unlock()
3366
def push(self, overwrite=False, stop_revision=None, lossy=False,
3367
_override_hook_source_branch=None):
3368
"""See InterBranch.push.
3370
This is the basic concrete implementation of push()
3372
:param _override_hook_source_branch: If specified, run the hooks
3373
passing this Branch as the source, rather than self. This is for
3374
use of RemoteBranch, where push is delegated to the underlying
3378
raise errors.LossyPushToSameVCS(self.source, self.target)
3379
# TODO: Public option to disable running hooks - should be trivial but
3382
op = cleanup.OperationWithCleanups(self._push_with_bound_branches)
3383
op.add_cleanup(self.source.lock_read().unlock)
3384
op.add_cleanup(self.target.lock_write().unlock)
3385
return op.run(overwrite, stop_revision,
3386
_override_hook_source_branch=_override_hook_source_branch)
3388
def _basic_push(self, overwrite, stop_revision):
3389
"""Basic implementation of push without bound branches or hooks.
3391
Must be called with source read locked and target write locked.
3393
result = BranchPushResult()
3394
result.source_branch = self.source
3395
result.target_branch = self.target
3396
result.old_revno, result.old_revid = self.target.last_revision_info()
3397
self.source.update_references(self.target)
3398
if result.old_revid != stop_revision:
3399
# We assume that during 'push' this repository is closer than
3401
graph = self.source.repository.get_graph(self.target.repository)
3402
self._update_revisions(stop_revision, overwrite=overwrite,
3404
if self.source._push_should_merge_tags():
3405
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3407
result.new_revno, result.new_revid = self.target.last_revision_info()
3410
def _push_with_bound_branches(self, operation, overwrite, stop_revision,
3411
_override_hook_source_branch=None):
3412
"""Push from source into target, and into target's master if any.
3415
if _override_hook_source_branch:
3416
result.source_branch = _override_hook_source_branch
3417
for hook in Branch.hooks['post_push']:
3420
bound_location = self.target.get_bound_location()
3421
if bound_location and self.target.base != bound_location:
3422
# there is a master branch.
3424
# XXX: Why the second check? Is it even supported for a branch to
3425
# be bound to itself? -- mbp 20070507
3426
master_branch = self.target.get_master_branch()
3427
master_branch.lock_write()
3428
operation.add_cleanup(master_branch.unlock)
3429
# push into the master from the source branch.
3430
master_inter = InterBranch.get(self.source, master_branch)
3431
master_inter._basic_push(overwrite, stop_revision)
3432
# and push into the target branch from the source. Note that
3433
# we push from the source branch again, because it's considered
3434
# the highest bandwidth repository.
3435
result = self._basic_push(overwrite, stop_revision)
3436
result.master_branch = master_branch
3437
result.local_branch = self.target
3439
master_branch = None
3441
result = self._basic_push(overwrite, stop_revision)
3442
# TODO: Why set master_branch and local_branch if there's no
3443
# binding? Maybe cleaner to just leave them unset? -- mbp
3445
result.master_branch = self.target
3446
result.local_branch = None
3450
def _pull(self, overwrite=False, stop_revision=None,
3237
3451
possible_transports=None, _hook_master=None, run_hooks=True,
3238
_override_hook_target=None, local=False):
3452
_override_hook_target=None, local=False,
3453
merge_tags_to_master=True):
3239
3454
"""See Branch.pull.
3456
This function is the core worker, used by GenericInterBranch.pull to
3457
avoid duplication when pulling source->master and source->local.
3241
3459
:param _hook_master: Private parameter - set the branch to
3242
3460
be supplied as the master to pull hooks.
3243
3461
:param run_hooks: Private parameter - if false, this branch
3244
3462
is being called because it's the master of the primary branch,
3245
3463
so it should not run its hooks.
3464
is being called because it's the master of the primary branch,
3465
so it should not run its hooks.
3246
3466
:param _override_hook_target: Private parameter - set the branch to be
3247
3467
supplied as the target_branch to pull hooks.
3248
3468
:param local: Only update the local branch, and not the bound branch.
3288
3508
self.source.unlock()
3291
def push(self, overwrite=False, stop_revision=None,
3292
_override_hook_source_branch=None):
3293
"""See InterBranch.push.
3295
This is the basic concrete implementation of push()
3297
:param _override_hook_source_branch: If specified, run
3298
the hooks passing this Branch as the source, rather than self.
3299
This is for use of RemoteBranch, where push is delegated to the
3300
underlying vfs-based Branch.
3302
# TODO: Public option to disable running hooks - should be trivial but
3304
self.source.lock_read()
3306
return _run_with_write_locked_target(
3307
self.target, self._push_with_bound_branches, overwrite,
3309
_override_hook_source_branch=_override_hook_source_branch)
3311
self.source.unlock()
3313
def _push_with_bound_branches(self, overwrite, stop_revision,
3314
_override_hook_source_branch=None):
3315
"""Push from source into target, and into target's master if any.
3318
if _override_hook_source_branch:
3319
result.source_branch = _override_hook_source_branch
3320
for hook in Branch.hooks['post_push']:
3323
bound_location = self.target.get_bound_location()
3324
if bound_location and self.target.base != bound_location:
3325
# there is a master branch.
3327
# XXX: Why the second check? Is it even supported for a branch to
3328
# be bound to itself? -- mbp 20070507
3329
master_branch = self.target.get_master_branch()
3330
master_branch.lock_write()
3332
# push into the master from the source branch.
3333
self.source._basic_push(master_branch, overwrite, stop_revision)
3334
# and push into the target branch from the source. Note that we
3335
# push from the source branch again, because its considered the
3336
# highest bandwidth repository.
3337
result = self.source._basic_push(self.target, overwrite,
3339
result.master_branch = master_branch
3340
result.local_branch = self.target
3344
master_branch.unlock()
3347
result = self.source._basic_push(self.target, overwrite,
3349
# TODO: Why set master_branch and local_branch if there's no
3350
# binding? Maybe cleaner to just leave them unset? -- mbp
3352
result.master_branch = self.target
3353
result.local_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.
3374
:param run_hooks: Private parameter - if false, this branch
3375
is being called because it's the master of the primary branch,
3376
so it should not run its hooks.
3378
bound_location = self.target.get_bound_location()
3379
if local and not bound_location:
3380
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()
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)
3397
master_branch.unlock()
3400
3512
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
