782
857
old_repository = self.repository
783
858
if len(old_repository._fallback_repositories) != 1:
784
859
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
860
"of %r (fallbacks: %r)" % (old_repository,
861
old_repository._fallback_repositories))
862
# Open the new repository object.
863
# Repositories don't offer an interface to remove fallback
864
# repositories today; take the conceptually simpler option and just
865
# reopen it. We reopen it starting from the URL so that we
866
# get a separate connection for RemoteRepositories and can
867
# stream from one of them to the other. This does mean doing
868
# separate SSH connection setup, but unstacking is not a
869
# common operation so it's tolerable.
870
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
871
new_repository = new_bzrdir.find_repository()
872
if new_repository._fallback_repositories:
873
raise AssertionError("didn't expect %r to have "
874
"fallback_repositories"
875
% (self.repository,))
876
# Replace self.repository with the new repository.
877
# Do our best to transfer the lock state (i.e. lock-tokens and
878
# lock count) of self.repository to the new repository.
879
lock_token = old_repository.lock_write().repository_token
880
self.repository = new_repository
881
if isinstance(self, remote.RemoteBranch):
882
# Remote branches can have a second reference to the old
883
# repository that need to be replaced.
884
if self._real_branch is not None:
885
self._real_branch.repository = new_repository
886
self.repository.lock_write(token=lock_token)
887
if lock_token is not None:
888
old_repository.leave_lock_in_place()
787
889
old_repository.unlock()
890
if lock_token is not None:
891
# XXX: self.repository.leave_lock_in_place() before this
892
# function will not be preserved. Fortunately that doesn't
893
# affect the current default format (2a), and would be a
894
# corner-case anyway.
895
# - Andrew Bennetts, 2010/06/30
896
self.repository.dont_leave_lock_in_place()
900
old_repository.unlock()
901
except errors.LockNotHeld:
904
if old_lock_count == 0:
905
raise AssertionError(
906
'old_repository should have been locked at least once.')
907
for i in range(old_lock_count-1):
908
self.repository.lock_write()
909
# Fetch from the old repository into the new.
788
910
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
912
# XXX: If you unstack a branch while it has a working tree
809
913
# with a pending merge, the pending-merged revisions will no
810
914
# 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(),
916
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
917
except errors.TagsNotSupported:
918
tags_to_fetch = set()
919
fetch_spec = _mod_graph.NotInOtherForRevs(self.repository,
920
old_repository, required_ids=[self.last_revision()],
921
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
922
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
819
924
old_repository.unlock()
917
1028
:return: A tuple (revno, revision_id).
919
1030
if self._last_revision_info_cache is None:
920
self._last_revision_info_cache = self._last_revision_info()
1031
self._last_revision_info_cache = self._read_last_revision_info()
921
1032
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,
1034
def _read_last_revision_info(self):
1035
raise NotImplementedError(self._read_last_revision_info)
1037
@deprecated_method(deprecated_in((2, 4, 0)))
970
1038
def import_last_revision_info(self, source_repo, revno, revid):
971
1039
"""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
1041
:param source_repo: Source repository to optionally fetch from
977
1042
:param revno: Revision number of the new tip
978
1043
:param revid: Revision id of the new tip
1704
1782
These are all empty initially, because by default nothing should get
1707
Hooks.__init__(self)
1708
self.create_hook(HookPoint('set_rh',
1785
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1786
self.add_hook('set_rh',
1709
1787
"Invoked whenever the revision history has been set via "
1710
1788
"set_revision_history. The api signature is (branch, "
1711
1789
"revision_history), and the branch will be write-locked. "
1712
1790
"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',
1791
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1792
self.add_hook('open',
1715
1793
"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',
1794
"branch is opened.", (1, 8))
1795
self.add_hook('post_push',
1718
1796
"Called after a push operation completes. post_push is called "
1719
1797
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1720
"bzr client.", (0, 15), None))
1721
self.create_hook(HookPoint('post_pull',
1798
"bzr client.", (0, 15))
1799
self.add_hook('post_pull',
1722
1800
"Called after a pull operation completes. post_pull is called "
1723
1801
"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 "
1802
"bzr client.", (0, 15))
1803
self.add_hook('pre_commit',
1804
"Called after a commit is calculated but before it is "
1727
1805
"completed. pre_commit is called with (local, master, old_revno, "
1728
1806
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1729
1807
"). old_revid is NULL_REVISION for the first commit to a branch, "
1731
1809
"basis revision. hooks MUST NOT modify this delta. "
1732
1810
" future_tree is an in-memory tree obtained from "
1733
1811
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1813
self.add_hook('post_commit',
1736
1814
"Called in the bzr client after a commit has completed. "
1737
1815
"post_commit is called with (local, master, old_revno, old_revid, "
1738
1816
"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',
1817
"commit to a branch.", (0, 15))
1818
self.add_hook('post_uncommit',
1741
1819
"Called in the bzr client after an uncommit completes. "
1742
1820
"post_uncommit is called with (local, master, old_revno, "
1743
1821
"old_revid, new_revno, new_revid) where local is the local branch "
1744
1822
"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',
1823
"receives new_revno of 0, new_revid of None.", (0, 15))
1824
self.add_hook('pre_change_branch_tip',
1747
1825
"Called in bzr client and server before a change to the tip of a "
1748
1826
"branch is made. pre_change_branch_tip is called with a "
1749
1827
"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',
1828
"commit, uncommit will all trigger this hook.", (1, 6))
1829
self.add_hook('post_change_branch_tip',
1752
1830
"Called in bzr client and server after a change to the tip of a "
1753
1831
"branch is made. post_change_branch_tip is called with a "
1754
1832
"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',
1833
"commit, uncommit will all trigger this hook.", (1, 4))
1834
self.add_hook('transform_fallback_location',
1757
1835
"Called when a stacked branch is activating its fallback "
1758
1836
"locations. transform_fallback_location is called with (branch, "
1759
1837
"url), and should return a new url. Returning the same url "
2387
2497
"""See Branch.print_file."""
2388
2498
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
2500
@needs_write_lock
2454
2501
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
2502
if not revision_id or not isinstance(revision_id, basestring):
2503
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
2465
2504
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))
2505
old_revno, old_revid = self.last_revision_info()
2506
if self._get_append_revisions_only():
2507
self._check_history_violation(revision_id)
2508
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2509
self._write_last_revision_info(revno, revision_id)
2510
self._clear_cached_state()
2511
self._last_revision_info_cache = revno, revision_id
2512
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2495
2514
def basis_tree(self):
2496
2515
"""See Branch.basis_tree."""
2645
class BzrBranch8(BzrBranch5):
2636
def _read_last_revision_info(self):
2637
revision_string = self._transport.get_bytes('last-revision')
2638
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2639
revision_id = cache_utf8.get_cached_utf8(revision_id)
2641
return revno, revision_id
2643
def _write_last_revision_info(self, revno, revision_id):
2644
"""Simply write out the revision id, with no checks.
2646
Use set_last_revision_info to perform this safely.
2648
Does not update the revision_history cache.
2650
revision_id = _mod_revision.ensure_null(revision_id)
2651
out_string = '%d %s\n' % (revno, revision_id)
2652
self._transport.put_bytes('last-revision', out_string,
2653
mode=self.bzrdir._get_file_mode())
2656
class FullHistoryBzrBranch(BzrBranch):
2657
"""Bzr branch which contains the full revision history."""
2660
def set_last_revision_info(self, revno, revision_id):
2661
if not revision_id or not isinstance(revision_id, basestring):
2662
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
2663
revision_id = _mod_revision.ensure_null(revision_id)
2664
# this old format stores the full history, but this api doesn't
2665
# provide it, so we must generate, and might as well check it's
2667
history = self._lefthand_history(revision_id)
2668
if len(history) != revno:
2669
raise AssertionError('%d != %d' % (len(history), revno))
2670
self._set_revision_history(history)
2672
def _read_last_revision_info(self):
2673
rh = self.revision_history()
2676
return (revno, rh[-1])
2678
return (0, _mod_revision.NULL_REVISION)
2680
@deprecated_method(deprecated_in((2, 4, 0)))
2682
def set_revision_history(self, rev_history):
2683
"""See Branch.set_revision_history."""
2684
self._set_revision_history(rev_history)
2686
def _set_revision_history(self, rev_history):
2687
if 'evil' in debug.debug_flags:
2688
mutter_callsite(3, "set_revision_history scales with history.")
2689
check_not_reserved_id = _mod_revision.check_not_reserved_id
2690
for rev_id in rev_history:
2691
check_not_reserved_id(rev_id)
2692
if Branch.hooks['post_change_branch_tip']:
2693
# Don't calculate the last_revision_info() if there are no hooks
2695
old_revno, old_revid = self.last_revision_info()
2696
if len(rev_history) == 0:
2697
revid = _mod_revision.NULL_REVISION
2699
revid = rev_history[-1]
2700
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2701
self._write_revision_history(rev_history)
2702
self._clear_cached_state()
2703
self._cache_revision_history(rev_history)
2704
for hook in Branch.hooks['set_rh']:
2705
hook(self, rev_history)
2706
if Branch.hooks['post_change_branch_tip']:
2707
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2709
def _write_revision_history(self, history):
2710
"""Factored out of set_revision_history.
2712
This performs the actual writing to disk.
2713
It is intended to be called by set_revision_history."""
2714
self._transport.put_bytes(
2715
'revision-history', '\n'.join(history),
2716
mode=self.bzrdir._get_file_mode())
2718
def _gen_revision_history(self):
2719
history = self._transport.get_bytes('revision-history').split('\n')
2720
if history[-1:] == ['']:
2721
# There shouldn't be a trailing newline, but just in case.
2725
def _synchronize_history(self, destination, revision_id):
2726
if not isinstance(destination, FullHistoryBzrBranch):
2727
super(BzrBranch, self)._synchronize_history(
2728
destination, revision_id)
2730
if revision_id == _mod_revision.NULL_REVISION:
2733
new_history = self.revision_history()
2734
if revision_id is not None and new_history != []:
2736
new_history = new_history[:new_history.index(revision_id) + 1]
2738
rev = self.repository.get_revision(revision_id)
2739
new_history = rev.get_history(self.repository)[1:]
2740
destination._set_revision_history(new_history)
2743
def generate_revision_history(self, revision_id, last_rev=None,
2745
"""Create a new revision history that will finish with revision_id.
2747
:param revision_id: the new tip to use.
2748
:param last_rev: The previous last_revision. If not None, then this
2749
must be a ancestory of revision_id, or DivergedBranches is raised.
2750
:param other_branch: The other branch that DivergedBranches should
2751
raise with respect to.
2753
self._set_revision_history(self._lefthand_history(revision_id,
2754
last_rev, other_branch))
2757
class BzrBranch5(FullHistoryBzrBranch):
2758
"""A format 5 branch. This supports new features over plain branches.
2760
It has support for a master_branch which is the data for bound branches.
2764
class BzrBranch8(BzrBranch):
2646
2765
"""A branch that stores tree-reference locations."""
2648
2767
def _open_hook(self):
2674
2793
self._last_revision_info_cache = None
2675
2794
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
2796
def _check_history_violation(self, revision_id):
2723
last_revision = _mod_revision.ensure_null(self.last_revision())
2797
current_revid = self.last_revision()
2798
last_revision = _mod_revision.ensure_null(current_revid)
2724
2799
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)
2801
graph = self.repository.get_graph()
2802
for lh_ancestor in graph.iter_lefthand_ancestry(revision_id):
2803
if lh_ancestor == current_revid:
2805
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2729
2807
def _gen_revision_history(self):
2730
2808
"""Generate the revision history from last revision
3182
3242
raise NotImplementedError(self.push)
3245
def copy_content_into(self, revision_id=None):
3246
"""Copy the content of source into target
3248
revision_id: if not None, the revision history in the new branch will
3249
be truncated to end with revision_id.
3251
raise NotImplementedError(self.copy_content_into)
3254
def fetch(self, stop_revision=None):
3257
:param stop_revision: Last revision to fetch
3259
raise NotImplementedError(self.fetch)
3185
3262
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()."""
3263
"""InterBranch implementation that uses public Branch functions."""
3266
def is_compatible(klass, source, target):
3267
# GenericBranch uses the public API, so always compatible
3271
def _get_branch_formats_to_test(klass):
3272
return [(format_registry.get_default(), format_registry.get_default())]
3275
def unwrap_format(klass, format):
3276
if isinstance(format, remote.RemoteBranchFormat):
3277
format._ensure_real()
3278
return format._custom_format
3282
def copy_content_into(self, revision_id=None):
3283
"""Copy the content of source into target
3285
revision_id: if not None, the revision history in the new branch will
3286
be truncated to end with revision_id.
3288
self.source.update_references(self.target)
3289
self.source._synchronize_history(self.target, revision_id)
3291
parent = self.source.get_parent()
3292
except errors.InaccessibleParent, e:
3293
mutter('parent was not accessible to copy: %s', e)
3296
self.target.set_parent(parent)
3297
if self.source._push_should_merge_tags():
3298
self.source.tags.merge_to(self.target.tags)
3301
def fetch(self, stop_revision=None):
3302
if self.target.base == self.source.base:
3196
3304
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)
3306
fetch_spec_factory = fetch.FetchSpecFactory()
3307
fetch_spec_factory.source_branch = self.source
3308
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3309
fetch_spec_factory.source_repo = self.source.repository
3310
fetch_spec_factory.target_repo = self.target.repository
3311
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3312
fetch_spec = fetch_spec_factory.make_fetch_spec()
3313
return self.target.repository.fetch(self.source.repository,
3314
fetch_spec=fetch_spec)
3234
3316
self.source.unlock()
3319
def _update_revisions(self, stop_revision=None, overwrite=False,
3321
other_revno, other_last_revision = self.source.last_revision_info()
3322
stop_revno = None # unknown
3323
if stop_revision is None:
3324
stop_revision = other_last_revision
3325
if _mod_revision.is_null(stop_revision):
3326
# if there are no commits, we're done.
3328
stop_revno = other_revno
3330
# what's the current last revision, before we fetch [and change it
3332
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3333
# we fetch here so that we don't process data twice in the common
3334
# case of having something to pull, and so that the check for
3335
# already merged can operate on the just fetched graph, which will
3336
# be cached in memory.
3337
self.fetch(stop_revision=stop_revision)
3338
# Check to see if one is an ancestor of the other
3341
graph = self.target.repository.get_graph()
3342
if self.target._check_if_descendant_or_diverged(
3343
stop_revision, last_rev, graph, self.source):
3344
# stop_revision is a descendant of last_rev, but we aren't
3345
# overwriting, so we're done.
3347
if stop_revno is None:
3349
graph = self.target.repository.get_graph()
3350
this_revno, this_last_revision = \
3351
self.target.last_revision_info()
3352
stop_revno = graph.find_distance_to_null(stop_revision,
3353
[(other_last_revision, other_revno),
3354
(this_last_revision, this_revno)])
3355
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3358
def pull(self, overwrite=False, stop_revision=None,
3359
possible_transports=None, run_hooks=True,
3360
_override_hook_target=None, local=False):
3361
"""Pull from source into self, updating my master if any.
3363
:param run_hooks: Private parameter - if false, this branch
3364
is being called because it's the master of the primary branch,
3365
so it should not run its hooks.
3367
bound_location = self.target.get_bound_location()
3368
if local and not bound_location:
3369
raise errors.LocalRequiresBoundBranch()
3370
master_branch = None
3371
source_is_master = (self.source.user_url == bound_location)
3372
if not local and bound_location and not source_is_master:
3373
# not pulling from master, so we need to update master.
3374
master_branch = self.target.get_master_branch(possible_transports)
3375
master_branch.lock_write()
3378
# pull from source into master.
3379
master_branch.pull(self.source, overwrite, stop_revision,
3381
return self._pull(overwrite,
3382
stop_revision, _hook_master=master_branch,
3383
run_hooks=run_hooks,
3384
_override_hook_target=_override_hook_target,
3385
merge_tags_to_master=not source_is_master)
3388
master_branch.unlock()
3390
def push(self, overwrite=False, stop_revision=None, lossy=False,
3391
_override_hook_source_branch=None):
3392
"""See InterBranch.push.
3394
This is the basic concrete implementation of push()
3396
:param _override_hook_source_branch: If specified, run the hooks
3397
passing this Branch as the source, rather than self. This is for
3398
use of RemoteBranch, where push is delegated to the underlying
3402
raise errors.LossyPushToSameVCS(self.source, self.target)
3403
# TODO: Public option to disable running hooks - should be trivial but
3405
self.source.lock_read()
3407
return _run_with_write_locked_target(
3408
self.target, self._push_with_bound_branches, overwrite,
3410
_override_hook_source_branch=_override_hook_source_branch)
3412
self.source.unlock()
3414
def _basic_push(self, overwrite, stop_revision):
3415
"""Basic implementation of push without bound branches or hooks.
3417
Must be called with source read locked and target write locked.
3419
result = BranchPushResult()
3420
result.source_branch = self.source
3421
result.target_branch = self.target
3422
result.old_revno, result.old_revid = self.target.last_revision_info()
3423
self.source.update_references(self.target)
3424
if result.old_revid != stop_revision:
3425
# We assume that during 'push' this repository is closer than
3427
graph = self.source.repository.get_graph(self.target.repository)
3428
self._update_revisions(stop_revision, overwrite=overwrite,
3430
if self.source._push_should_merge_tags():
3431
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3433
result.new_revno, result.new_revid = self.target.last_revision_info()
3436
def _push_with_bound_branches(self, overwrite, stop_revision,
3437
_override_hook_source_branch=None):
3438
"""Push from source into target, and into target's master if any.
3441
if _override_hook_source_branch:
3442
result.source_branch = _override_hook_source_branch
3443
for hook in Branch.hooks['post_push']:
3446
bound_location = self.target.get_bound_location()
3447
if bound_location and self.target.base != bound_location:
3448
# there is a master branch.
3450
# XXX: Why the second check? Is it even supported for a branch to
3451
# be bound to itself? -- mbp 20070507
3452
master_branch = self.target.get_master_branch()
3453
master_branch.lock_write()
3455
# push into the master from the source branch.
3456
master_inter = InterBranch.get(self.source, master_branch)
3457
master_inter._basic_push(overwrite, stop_revision)
3458
# and push into the target branch from the source. Note that
3459
# we push from the source branch again, because it's considered
3460
# the highest bandwidth repository.
3461
result = self._basic_push(overwrite, stop_revision)
3462
result.master_branch = master_branch
3463
result.local_branch = self.target
3467
master_branch.unlock()
3470
result = self._basic_push(overwrite, stop_revision)
3471
# TODO: Why set master_branch and local_branch if there's no
3472
# binding? Maybe cleaner to just leave them unset? -- mbp
3474
result.master_branch = self.target
3475
result.local_branch = None
3479
def _pull(self, overwrite=False, stop_revision=None,
3237
3480
possible_transports=None, _hook_master=None, run_hooks=True,
3238
_override_hook_target=None, local=False):
3481
_override_hook_target=None, local=False,
3482
merge_tags_to_master=True):
3239
3483
"""See Branch.pull.
3485
This function is the core worker, used by GenericInterBranch.pull to
3486
avoid duplication when pulling source->master and source->local.
3241
3488
:param _hook_master: Private parameter - set the branch to
3242
3489
be supplied as the master to pull hooks.
3243
3490
:param run_hooks: Private parameter - if false, this branch
3244
3491
is being called because it's the master of the primary branch,
3245
3492
so it should not run its hooks.
3493
is being called because it's the master of the primary branch,
3494
so it should not run its hooks.
3246
3495
:param _override_hook_target: Private parameter - set the branch to be
3247
3496
supplied as the target_branch to pull hooks.
3248
3497
:param local: Only update the local branch, and not the bound branch.
3288
3537
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
3541
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)