792
859
old_repository = self.repository
793
860
if len(old_repository._fallback_repositories) != 1:
794
861
raise AssertionError("can't cope with fallback repositories "
795
"of %r" % (self.repository,))
796
# 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()
797
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.
798
912
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
914
# XXX: If you unstack a branch while it has a working tree
819
915
# with a pending merge, the pending-merged revisions will no
820
916
# 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(),
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)
829
926
old_repository.unlock()
927
1031
:return: A tuple (revno, revision_id).
929
1033
if self._last_revision_info_cache is None:
930
self._last_revision_info_cache = self._last_revision_info()
1034
self._last_revision_info_cache = self._read_last_revision_info()
931
1035
return self._last_revision_info_cache
933
def _last_revision_info(self):
934
rh = self.revision_history()
937
return (revno, rh[-1])
939
return (0, _mod_revision.NULL_REVISION)
941
@deprecated_method(deprecated_in((1, 6, 0)))
942
def missing_revisions(self, other, stop_revision=None):
943
"""Return a list of new revisions that would perfectly fit.
945
If self and other have not diverged, return a list of the revisions
946
present in other, but missing from self.
948
self_history = self.revision_history()
949
self_len = len(self_history)
950
other_history = other.revision_history()
951
other_len = len(other_history)
952
common_index = min(self_len, other_len) -1
953
if common_index >= 0 and \
954
self_history[common_index] != other_history[common_index]:
955
raise errors.DivergedBranches(self, other)
957
if stop_revision is None:
958
stop_revision = other_len
960
if stop_revision > other_len:
961
raise errors.NoSuchRevision(self, stop_revision)
962
return other_history[self_len:stop_revision]
965
def update_revisions(self, other, stop_revision=None, overwrite=False,
967
"""Pull in new perfect-fit revisions.
969
:param other: Another Branch to pull from
970
:param stop_revision: Updated until the given revision
971
:param overwrite: Always set the branch pointer, rather than checking
972
to see if it is a proper descendant.
973
:param graph: A Graph object that can be used to query history
974
information. This can be None.
977
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)))
980
1041
def import_last_revision_info(self, source_repo, revno, revid):
981
1042
"""Set the last revision info, importing from another repo if necessary.
983
This is used by the bound branch code to upload a revision to
984
the master branch first before updating the tip of the local branch.
986
1044
:param source_repo: Source repository to optionally fetch from
987
1045
:param revno: Revision number of the new tip
988
1046
:param revid: Revision id of the new tip
1718
1785
These are all empty initially, because by default nothing should get
1721
Hooks.__init__(self)
1722
self.create_hook(HookPoint('set_rh',
1788
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1789
self.add_hook('set_rh',
1723
1790
"Invoked whenever the revision history has been set via "
1724
1791
"set_revision_history. The api signature is (branch, "
1725
1792
"revision_history), and the branch will be write-locked. "
1726
1793
"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',
1794
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1795
self.add_hook('open',
1729
1796
"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',
1797
"branch is opened.", (1, 8))
1798
self.add_hook('post_push',
1732
1799
"Called after a push operation completes. post_push is called "
1733
1800
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1734
"bzr client.", (0, 15), None))
1735
self.create_hook(HookPoint('post_pull',
1801
"bzr client.", (0, 15))
1802
self.add_hook('post_pull',
1736
1803
"Called after a pull operation completes. post_pull is called "
1737
1804
"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 "
1805
"bzr client.", (0, 15))
1806
self.add_hook('pre_commit',
1807
"Called after a commit is calculated but before it is "
1741
1808
"completed. pre_commit is called with (local, master, old_revno, "
1742
1809
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1743
1810
"). old_revid is NULL_REVISION for the first commit to a branch, "
1745
1812
"basis revision. hooks MUST NOT modify this delta. "
1746
1813
" future_tree is an in-memory tree obtained from "
1747
1814
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1748
"tree.", (0,91), None))
1749
self.create_hook(HookPoint('post_commit',
1816
self.add_hook('post_commit',
1750
1817
"Called in the bzr client after a commit has completed. "
1751
1818
"post_commit is called with (local, master, old_revno, old_revid, "
1752
1819
"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',
1820
"commit to a branch.", (0, 15))
1821
self.add_hook('post_uncommit',
1755
1822
"Called in the bzr client after an uncommit completes. "
1756
1823
"post_uncommit is called with (local, master, old_revno, "
1757
1824
"old_revid, new_revno, new_revid) where local is the local branch "
1758
1825
"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',
1826
"receives new_revno of 0, new_revid of None.", (0, 15))
1827
self.add_hook('pre_change_branch_tip',
1761
1828
"Called in bzr client and server before a change to the tip of a "
1762
1829
"branch is made. pre_change_branch_tip is called with a "
1763
1830
"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',
1831
"commit, uncommit will all trigger this hook.", (1, 6))
1832
self.add_hook('post_change_branch_tip',
1766
1833
"Called in bzr client and server after a change to the tip of a "
1767
1834
"branch is made. post_change_branch_tip is called with a "
1768
1835
"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',
1836
"commit, uncommit will all trigger this hook.", (1, 4))
1837
self.add_hook('transform_fallback_location',
1771
1838
"Called when a stacked branch is activating its fallback "
1772
1839
"locations. transform_fallback_location is called with (branch, "
1773
1840
"url), and should return a new url. Returning the same url "
2430
2500
"""See Branch.print_file."""
2431
2501
return self.repository.print_file(file, revision_id)
2433
def _write_revision_history(self, history):
2434
"""Factored out of set_revision_history.
2436
This performs the actual writing to disk.
2437
It is intended to be called by BzrBranch5.set_revision_history."""
2438
self._transport.put_bytes(
2439
'revision-history', '\n'.join(history),
2440
mode=self.bzrdir._get_file_mode())
2443
def set_revision_history(self, rev_history):
2444
"""See Branch.set_revision_history."""
2445
if 'evil' in debug.debug_flags:
2446
mutter_callsite(3, "set_revision_history scales with history.")
2447
check_not_reserved_id = _mod_revision.check_not_reserved_id
2448
for rev_id in rev_history:
2449
check_not_reserved_id(rev_id)
2450
if Branch.hooks['post_change_branch_tip']:
2451
# Don't calculate the last_revision_info() if there are no hooks
2453
old_revno, old_revid = self.last_revision_info()
2454
if len(rev_history) == 0:
2455
revid = _mod_revision.NULL_REVISION
2457
revid = rev_history[-1]
2458
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2459
self._write_revision_history(rev_history)
2460
self._clear_cached_state()
2461
self._cache_revision_history(rev_history)
2462
for hook in Branch.hooks['set_rh']:
2463
hook(self, rev_history)
2464
if Branch.hooks['post_change_branch_tip']:
2465
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2467
def _synchronize_history(self, destination, revision_id):
2468
"""Synchronize last revision and revision history between branches.
2470
This version is most efficient when the destination is also a
2471
BzrBranch5, but works for BzrBranch6 as long as the revision
2472
history is the true lefthand parent history, and all of the revisions
2473
are in the destination's repository. If not, set_revision_history
2476
:param destination: The branch to copy the history into
2477
:param revision_id: The revision-id to truncate history at. May
2478
be None to copy complete history.
2480
if not isinstance(destination._format, BzrBranchFormat5):
2481
super(BzrBranch, self)._synchronize_history(
2482
destination, revision_id)
2484
if revision_id == _mod_revision.NULL_REVISION:
2487
new_history = self.revision_history()
2488
if revision_id is not None and new_history != []:
2490
new_history = new_history[:new_history.index(revision_id) + 1]
2492
rev = self.repository.get_revision(revision_id)
2493
new_history = rev.get_history(self.repository)[1:]
2494
destination.set_revision_history(new_history)
2496
2503
@needs_write_lock
2497
2504
def set_last_revision_info(self, revno, revision_id):
2498
"""Set the last revision of this branch.
2500
The caller is responsible for checking that the revno is correct
2501
for this revision id.
2503
It may be possible to set the branch last revision to an id not
2504
present in the repository. However, branches can also be
2505
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)
2508
2507
revision_id = _mod_revision.ensure_null(revision_id)
2509
# this old format stores the full history, but this api doesn't
2510
# provide it, so we must generate, and might as well check it's
2512
history = self._lefthand_history(revision_id)
2513
if len(history) != revno:
2514
raise AssertionError('%d != %d' % (len(history), revno))
2515
self.set_revision_history(history)
2517
def _gen_revision_history(self):
2518
history = self._transport.get_bytes('revision-history').split('\n')
2519
if history[-1:] == ['']:
2520
# There shouldn't be a trailing newline, but just in case.
2525
def generate_revision_history(self, revision_id, last_rev=None,
2527
"""Create a new revision history that will finish with revision_id.
2529
:param revision_id: the new tip to use.
2530
:param last_rev: The previous last_revision. If not None, then this
2531
must be a ancestory of revision_id, or DivergedBranches is raised.
2532
:param other_branch: The other branch that DivergedBranches should
2533
raise with respect to.
2535
self.set_revision_history(self._lefthand_history(revision_id,
2536
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)
2538
2517
def basis_tree(self):
2539
2518
"""See Branch.basis_tree."""
2688
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):
2689
2768
"""A branch that stores tree-reference locations."""
2691
2770
def _open_hook(self):
2717
2796
self._last_revision_info_cache = None
2718
2797
self._reference_info = None
2720
def _last_revision_info(self):
2721
revision_string = self._transport.get_bytes('last-revision')
2722
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2723
revision_id = cache_utf8.get_cached_utf8(revision_id)
2725
return revno, revision_id
2727
def _write_last_revision_info(self, revno, revision_id):
2728
"""Simply write out the revision id, with no checks.
2730
Use set_last_revision_info to perform this safely.
2732
Does not update the revision_history cache.
2733
Intended to be called by set_last_revision_info and
2734
_write_revision_history.
2736
revision_id = _mod_revision.ensure_null(revision_id)
2737
out_string = '%d %s\n' % (revno, revision_id)
2738
self._transport.put_bytes('last-revision', out_string,
2739
mode=self.bzrdir._get_file_mode())
2742
def set_last_revision_info(self, revno, revision_id):
2743
revision_id = _mod_revision.ensure_null(revision_id)
2744
old_revno, old_revid = self.last_revision_info()
2745
if self._get_append_revisions_only():
2746
self._check_history_violation(revision_id)
2747
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2748
self._write_last_revision_info(revno, revision_id)
2749
self._clear_cached_state()
2750
self._last_revision_info_cache = revno, revision_id
2751
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2753
def _synchronize_history(self, destination, revision_id):
2754
"""Synchronize last revision and revision history between branches.
2756
:see: Branch._synchronize_history
2758
# XXX: The base Branch has a fast implementation of this method based
2759
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2760
# that uses set_revision_history. This class inherits from BzrBranch5,
2761
# but wants the fast implementation, so it calls
2762
# Branch._synchronize_history directly.
2763
Branch._synchronize_history(self, destination, revision_id)
2765
2799
def _check_history_violation(self, revision_id):
2766
last_revision = _mod_revision.ensure_null(self.last_revision())
2800
current_revid = self.last_revision()
2801
last_revision = _mod_revision.ensure_null(current_revid)
2767
2802
if _mod_revision.is_null(last_revision):
2769
if last_revision not in self._lefthand_history(revision_id):
2770
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)
2772
2810
def _gen_revision_history(self):
2773
2811
"""Generate the revision history from last revision
3225
3212
raise NotImplementedError(self.push)
3215
def copy_content_into(self, revision_id=None):
3216
"""Copy the content of source into target
3218
revision_id: if not None, the revision history in the new branch will
3219
be truncated to end with revision_id.
3221
raise NotImplementedError(self.copy_content_into)
3224
def fetch(self, stop_revision=None, limit=None):
3227
:param stop_revision: Last revision to fetch
3228
:param limit: Optional rough limit of revisions to fetch
3230
raise NotImplementedError(self.fetch)
3228
3233
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
3236
def update_revisions(self, stop_revision=None, overwrite=False,
3238
"""See InterBranch.update_revisions()."""
3234
"""InterBranch implementation that uses public Branch functions."""
3237
def is_compatible(klass, source, target):
3238
# GenericBranch uses the public API, so always compatible
3242
def _get_branch_formats_to_test(klass):
3243
return [(format_registry.get_default(), format_registry.get_default())]
3246
def unwrap_format(klass, format):
3247
if isinstance(format, remote.RemoteBranchFormat):
3248
format._ensure_real()
3249
return format._custom_format
3253
def copy_content_into(self, revision_id=None):
3254
"""Copy the content of source into target
3256
revision_id: if not None, the revision history in the new branch will
3257
be truncated to end with revision_id.
3259
self.source.update_references(self.target)
3260
self.source._synchronize_history(self.target, revision_id)
3262
parent = self.source.get_parent()
3263
except errors.InaccessibleParent, e:
3264
mutter('parent was not accessible to copy: %s', e)
3267
self.target.set_parent(parent)
3268
if self.source._push_should_merge_tags():
3269
self.source.tags.merge_to(self.target.tags)
3272
def fetch(self, stop_revision=None, limit=None):
3273
if self.target.base == self.source.base:
3239
3275
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
fetch_spec_factory = fetch.FetchSpecFactory()
3278
fetch_spec_factory.source_branch = self.source
3279
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3280
fetch_spec_factory.source_repo = self.source.repository
3281
fetch_spec_factory.target_repo = self.target.repository
3282
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3283
fetch_spec_factory.limit = limit
3284
fetch_spec = fetch_spec_factory.make_fetch_spec()
3285
return self.target.repository.fetch(self.source.repository,
3286
fetch_spec=fetch_spec)
3277
3288
self.source.unlock()
3291
def _update_revisions(self, stop_revision=None, overwrite=False,
3293
other_revno, other_last_revision = self.source.last_revision_info()
3294
stop_revno = None # unknown
3295
if stop_revision is None:
3296
stop_revision = other_last_revision
3297
if _mod_revision.is_null(stop_revision):
3298
# if there are no commits, we're done.
3300
stop_revno = other_revno
3302
# what's the current last revision, before we fetch [and change it
3304
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3305
# we fetch here so that we don't process data twice in the common
3306
# case of having something to pull, and so that the check for
3307
# already merged can operate on the just fetched graph, which will
3308
# be cached in memory.
3309
self.fetch(stop_revision=stop_revision)
3310
# Check to see if one is an ancestor of the other
3313
graph = self.target.repository.get_graph()
3314
if self.target._check_if_descendant_or_diverged(
3315
stop_revision, last_rev, graph, self.source):
3316
# stop_revision is a descendant of last_rev, but we aren't
3317
# overwriting, so we're done.
3319
if stop_revno is None:
3321
graph = self.target.repository.get_graph()
3322
this_revno, this_last_revision = \
3323
self.target.last_revision_info()
3324
stop_revno = graph.find_distance_to_null(stop_revision,
3325
[(other_last_revision, other_revno),
3326
(this_last_revision, this_revno)])
3327
self.target.set_last_revision_info(stop_revno, stop_revision)
3279
3330
def pull(self, overwrite=False, stop_revision=None,
3331
possible_transports=None, run_hooks=True,
3332
_override_hook_target=None, local=False):
3333
"""Pull from source into self, updating my master if any.
3335
:param run_hooks: Private parameter - if false, this branch
3336
is being called because it's the master of the primary branch,
3337
so it should not run its hooks.
3339
bound_location = self.target.get_bound_location()
3340
if local and not bound_location:
3341
raise errors.LocalRequiresBoundBranch()
3342
master_branch = None
3343
source_is_master = (self.source.user_url == bound_location)
3344
if not local and bound_location and not source_is_master:
3345
# not pulling from master, so we need to update master.
3346
master_branch = self.target.get_master_branch(possible_transports)
3347
master_branch.lock_write()
3350
# pull from source into master.
3351
master_branch.pull(self.source, overwrite, stop_revision,
3353
return self._pull(overwrite,
3354
stop_revision, _hook_master=master_branch,
3355
run_hooks=run_hooks,
3356
_override_hook_target=_override_hook_target,
3357
merge_tags_to_master=not source_is_master)
3360
master_branch.unlock()
3362
def push(self, overwrite=False, stop_revision=None, lossy=False,
3363
_override_hook_source_branch=None):
3364
"""See InterBranch.push.
3366
This is the basic concrete implementation of push()
3368
:param _override_hook_source_branch: If specified, run the hooks
3369
passing this Branch as the source, rather than self. This is for
3370
use of RemoteBranch, where push is delegated to the underlying
3374
raise errors.LossyPushToSameVCS(self.source, self.target)
3375
# TODO: Public option to disable running hooks - should be trivial but
3378
op = cleanup.OperationWithCleanups(self._push_with_bound_branches)
3379
op.add_cleanup(self.source.lock_read().unlock)
3380
op.add_cleanup(self.target.lock_write().unlock)
3381
return op.run(overwrite, stop_revision,
3382
_override_hook_source_branch=_override_hook_source_branch)
3384
def _basic_push(self, overwrite, stop_revision):
3385
"""Basic implementation of push without bound branches or hooks.
3387
Must be called with source read locked and target write locked.
3389
result = BranchPushResult()
3390
result.source_branch = self.source
3391
result.target_branch = self.target
3392
result.old_revno, result.old_revid = self.target.last_revision_info()
3393
self.source.update_references(self.target)
3394
if result.old_revid != stop_revision:
3395
# We assume that during 'push' this repository is closer than
3397
graph = self.source.repository.get_graph(self.target.repository)
3398
self._update_revisions(stop_revision, overwrite=overwrite,
3400
if self.source._push_should_merge_tags():
3401
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3403
result.new_revno, result.new_revid = self.target.last_revision_info()
3406
def _push_with_bound_branches(self, operation, overwrite, stop_revision,
3407
_override_hook_source_branch=None):
3408
"""Push from source into target, and into target's master if any.
3411
if _override_hook_source_branch:
3412
result.source_branch = _override_hook_source_branch
3413
for hook in Branch.hooks['post_push']:
3416
bound_location = self.target.get_bound_location()
3417
if bound_location and self.target.base != bound_location:
3418
# there is a master branch.
3420
# XXX: Why the second check? Is it even supported for a branch to
3421
# be bound to itself? -- mbp 20070507
3422
master_branch = self.target.get_master_branch()
3423
master_branch.lock_write()
3424
operation.add_cleanup(master_branch.unlock)
3425
# push into the master from the source branch.
3426
master_inter = InterBranch.get(self.source, master_branch)
3427
master_inter._basic_push(overwrite, stop_revision)
3428
# and push into the target branch from the source. Note that
3429
# we push from the source branch again, because it's considered
3430
# the highest bandwidth repository.
3431
result = self._basic_push(overwrite, stop_revision)
3432
result.master_branch = master_branch
3433
result.local_branch = self.target
3435
master_branch = None
3437
result = self._basic_push(overwrite, stop_revision)
3438
# TODO: Why set master_branch and local_branch if there's no
3439
# binding? Maybe cleaner to just leave them unset? -- mbp
3441
result.master_branch = self.target
3442
result.local_branch = None
3446
def _pull(self, overwrite=False, stop_revision=None,
3280
3447
possible_transports=None, _hook_master=None, run_hooks=True,
3281
_override_hook_target=None, local=False):
3448
_override_hook_target=None, local=False,
3449
merge_tags_to_master=True):
3282
3450
"""See Branch.pull.
3452
This function is the core worker, used by GenericInterBranch.pull to
3453
avoid duplication when pulling source->master and source->local.
3284
3455
:param _hook_master: Private parameter - set the branch to
3285
3456
be supplied as the master to pull hooks.
3286
3457
:param run_hooks: Private parameter - if false, this branch
3287
3458
is being called because it's the master of the primary branch,
3288
3459
so it should not run its hooks.
3460
is being called because it's the master of the primary branch,
3461
so it should not run its hooks.
3289
3462
:param _override_hook_target: Private parameter - set the branch to be
3290
3463
supplied as the target_branch to pull hooks.
3291
3464
:param local: Only update the local branch, and not the bound branch.
3331
3504
self.source.unlock()
3334
def push(self, overwrite=False, stop_revision=None,
3335
_override_hook_source_branch=None):
3336
"""See InterBranch.push.
3338
This is the basic concrete implementation of push()
3340
:param _override_hook_source_branch: If specified, run
3341
the hooks passing this Branch as the source, rather than self.
3342
This is for use of RemoteBranch, where push is delegated to the
3343
underlying vfs-based Branch.
3345
# TODO: Public option to disable running hooks - should be trivial but
3347
self.source.lock_read()
3349
return _run_with_write_locked_target(
3350
self.target, self._push_with_bound_branches, overwrite,
3352
_override_hook_source_branch=_override_hook_source_branch)
3354
self.source.unlock()
3356
def _push_with_bound_branches(self, overwrite, stop_revision,
3357
_override_hook_source_branch=None):
3358
"""Push from source into target, and into target's master if any.
3361
if _override_hook_source_branch:
3362
result.source_branch = _override_hook_source_branch
3363
for hook in Branch.hooks['post_push']:
3366
bound_location = self.target.get_bound_location()
3367
if bound_location and self.target.base != bound_location:
3368
# there is a master branch.
3370
# XXX: Why the second check? Is it even supported for a branch to
3371
# be bound to itself? -- mbp 20070507
3372
master_branch = self.target.get_master_branch()
3373
master_branch.lock_write()
3375
# push into the master from the source branch.
3376
self.source._basic_push(master_branch, overwrite, stop_revision)
3377
# and push into the target branch from the source. Note that we
3378
# push from the source branch again, because its considered the
3379
# highest bandwidth repository.
3380
result = self.source._basic_push(self.target, overwrite,
3382
result.master_branch = master_branch
3383
result.local_branch = self.target
3387
master_branch.unlock()
3390
result = self.source._basic_push(self.target, overwrite,
3392
# TODO: Why set master_branch and local_branch if there's no
3393
# binding? Maybe cleaner to just leave them unset? -- mbp
3395
result.master_branch = self.target
3396
result.local_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.
3417
:param run_hooks: Private parameter - if false, this branch
3418
is being called because it's the master of the primary branch,
3419
so it should not run its hooks.
3421
bound_location = self.target.get_bound_location()
3422
if local and not bound_location:
3423
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()
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)
3440
master_branch.unlock()
3443
3508
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)