792
857
old_repository = self.repository
793
858
if len(old_repository._fallback_repositories) != 1:
794
859
raise AssertionError("can't cope with fallback repositories "
795
"of %r" % (self.repository,))
796
# 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()
797
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.
798
910
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
912
# XXX: If you unstack a branch while it has a working tree
819
913
# with a pending merge, the pending-merged revisions will no
820
914
# 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(),
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)
829
924
old_repository.unlock()
927
1028
:return: A tuple (revno, revision_id).
929
1030
if self._last_revision_info_cache is None:
930
self._last_revision_info_cache = self._last_revision_info()
1031
self._last_revision_info_cache = self._read_last_revision_info()
931
1032
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,
1034
def _read_last_revision_info(self):
1035
raise NotImplementedError(self._read_last_revision_info)
1037
@deprecated_method(deprecated_in((2, 4, 0)))
980
1038
def import_last_revision_info(self, source_repo, revno, revid):
981
1039
"""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
1041
:param source_repo: Source repository to optionally fetch from
987
1042
:param revno: Revision number of the new tip
988
1043
:param revid: Revision id of the new tip
1718
1782
These are all empty initially, because by default nothing should get
1721
Hooks.__init__(self)
1722
self.create_hook(HookPoint('set_rh',
1785
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1786
self.add_hook('set_rh',
1723
1787
"Invoked whenever the revision history has been set via "
1724
1788
"set_revision_history. The api signature is (branch, "
1725
1789
"revision_history), and the branch will be write-locked. "
1726
1790
"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',
1791
"hook to use is Branch.post_change_branch_tip.", (0, 15))
1792
self.add_hook('open',
1729
1793
"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',
1794
"branch is opened.", (1, 8))
1795
self.add_hook('post_push',
1732
1796
"Called after a push operation completes. post_push is called "
1733
1797
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1734
"bzr client.", (0, 15), None))
1735
self.create_hook(HookPoint('post_pull',
1798
"bzr client.", (0, 15))
1799
self.add_hook('post_pull',
1736
1800
"Called after a pull operation completes. post_pull is called "
1737
1801
"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 "
1802
"bzr client.", (0, 15))
1803
self.add_hook('pre_commit',
1804
"Called after a commit is calculated but before it is "
1741
1805
"completed. pre_commit is called with (local, master, old_revno, "
1742
1806
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1743
1807
"). old_revid is NULL_REVISION for the first commit to a branch, "
1745
1809
"basis revision. hooks MUST NOT modify this delta. "
1746
1810
" future_tree is an in-memory tree obtained from "
1747
1811
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1748
"tree.", (0,91), None))
1749
self.create_hook(HookPoint('post_commit',
1813
self.add_hook('post_commit',
1750
1814
"Called in the bzr client after a commit has completed. "
1751
1815
"post_commit is called with (local, master, old_revno, old_revid, "
1752
1816
"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',
1817
"commit to a branch.", (0, 15))
1818
self.add_hook('post_uncommit',
1755
1819
"Called in the bzr client after an uncommit completes. "
1756
1820
"post_uncommit is called with (local, master, old_revno, "
1757
1821
"old_revid, new_revno, new_revid) where local is the local branch "
1758
1822
"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',
1823
"receives new_revno of 0, new_revid of None.", (0, 15))
1824
self.add_hook('pre_change_branch_tip',
1761
1825
"Called in bzr client and server before a change to the tip of a "
1762
1826
"branch is made. pre_change_branch_tip is called with a "
1763
1827
"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',
1828
"commit, uncommit will all trigger this hook.", (1, 6))
1829
self.add_hook('post_change_branch_tip',
1766
1830
"Called in bzr client and server after a change to the tip of a "
1767
1831
"branch is made. post_change_branch_tip is called with a "
1768
1832
"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',
1833
"commit, uncommit will all trigger this hook.", (1, 4))
1834
self.add_hook('transform_fallback_location',
1771
1835
"Called when a stacked branch is activating its fallback "
1772
1836
"locations. transform_fallback_location is called with (branch, "
1773
1837
"url), and should return a new url. Returning the same url "
2430
2497
"""See Branch.print_file."""
2431
2498
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
2500
@needs_write_lock
2497
2501
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
2502
if not revision_id or not isinstance(revision_id, basestring):
2503
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
2508
2504
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))
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)
2538
2514
def basis_tree(self):
2539
2515
"""See Branch.basis_tree."""
2688
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):
2689
2765
"""A branch that stores tree-reference locations."""
2691
2767
def _open_hook(self):
2717
2793
self._last_revision_info_cache = None
2718
2794
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
2796
def _check_history_violation(self, revision_id):
2766
last_revision = _mod_revision.ensure_null(self.last_revision())
2797
current_revid = self.last_revision()
2798
last_revision = _mod_revision.ensure_null(current_revid)
2767
2799
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)
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)
2772
2807
def _gen_revision_history(self):
2773
2808
"""Generate the revision history from last revision
3225
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)
3228
3262
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()."""
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:
3239
3304
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)
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)
3277
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)
3279
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,
3280
3480
possible_transports=None, _hook_master=None, run_hooks=True,
3281
_override_hook_target=None, local=False):
3481
_override_hook_target=None, local=False,
3482
merge_tags_to_master=True):
3282
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.
3284
3488
:param _hook_master: Private parameter - set the branch to
3285
3489
be supplied as the master to pull hooks.
3286
3490
:param run_hooks: Private parameter - if false, this branch
3287
3491
is being called because it's the master of the primary branch,
3288
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.
3289
3495
:param _override_hook_target: Private parameter - set the branch to be
3290
3496
supplied as the target_branch to pull hooks.
3291
3497
:param local: Only update the local branch, and not the bound branch.
3331
3537
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
3541
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)