52
73
from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
55
BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
56
BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
57
BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
60
# TODO: Maybe include checks for common corruption of newlines, etc?
62
# TODO: Some operations like log might retrieve the same revisions
63
# repeatedly to calculate deltas. We could perhaps have a weakref
64
# cache in memory to make this faster. In general anything can be
65
# cached in memory between lock and unlock operations. .. nb thats
66
# what the transaction identity map provides
69
######################################################################
76
class Branch(controldir.ControlComponent):
73
77
"""Branch holding a history of revisions.
76
Base directory/url of the branch.
78
hooks: An instance of BranchHooks.
80
Base directory/url of the branch; using control_url and
81
control_transport is more standardized.
82
:ivar hooks: An instance of BranchHooks.
83
:ivar _master_branch_cache: cached result of get_master_branch, see
80
86
# this is really an instance variable - FIXME move it there
84
# override this to set the strategy for storing tags
86
return DisabledTags(self)
88
def __init__(self, *ignored, **ignored_too):
89
self.tags = self._make_tags()
91
def control_transport(self):
92
return self._transport
95
def user_transport(self):
96
return self.bzrdir.user_transport
98
def __init__(self, possible_transports=None):
99
self.tags = self._format.make_tags(self)
90
100
self._revision_history_cache = None
91
101
self._revision_id_to_revno_cache = None
102
self._partial_revision_id_to_revno_cache = {}
103
self._partial_revision_history_cache = []
104
self._tags_bytes = None
92
105
self._last_revision_info_cache = None
106
self._master_branch_cache = None
107
self._merge_sorted_revisions_cache = None
108
self._open_hook(possible_transports)
109
hooks = Branch.hooks['open']
113
def _open_hook(self, possible_transports):
96
114
"""Called by init to allow simpler extension of the base class."""
116
def _activate_fallback_location(self, url, possible_transports):
117
"""Activate the branch/repository from url as a fallback repository."""
118
for existing_fallback_repo in self.repository._fallback_repositories:
119
if existing_fallback_repo.user_url == url:
120
# This fallback is already configured. This probably only
121
# happens because ControlDir.sprout is a horrible mess. To avoid
122
# confusing _unstack we don't add this a second time.
123
mutter('duplicate activation of fallback %r on %r', url, self)
125
repo = self._get_fallback_repository(url, possible_transports)
126
if repo.has_same_location(self.repository):
127
raise errors.UnstackableLocationError(self.user_url, url)
128
self.repository.add_fallback_repository(repo)
98
130
def break_lock(self):
99
131
"""Break a lock if one is present from another instance.
116
182
For instance, if the branch is at URL/.bzr/branch,
117
183
Branch.open(URL) -> a Branch instance.
119
control = bzrdir.BzrDir.open(base, _unsupported,
120
possible_transports=possible_transports)
121
return control.open_branch(_unsupported)
185
control = controldir.ControlDir.open(base,
186
possible_transports=possible_transports, _unsupported=_unsupported)
187
return control.open_branch(unsupported=_unsupported,
188
possible_transports=possible_transports)
124
def open_from_transport(transport, _unsupported=False):
191
def open_from_transport(transport, name=None, _unsupported=False,
192
possible_transports=None):
125
193
"""Open the branch rooted at transport"""
126
control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
127
return control.open_branch(_unsupported)
194
control = controldir.ControlDir.open_from_transport(transport, _unsupported)
195
return control.open_branch(name=name, unsupported=_unsupported,
196
possible_transports=possible_transports)
130
199
def open_containing(url, possible_transports=None):
131
200
"""Open an existing branch which contains url.
133
202
This probes for a branch at url, and searches upwards from there.
135
204
Basically we keep looking up until we find the control directory or
136
205
run into the root. If there isn't one, raises NotBranchError.
137
If there is one and it is either an unrecognised format or an unsupported
206
If there is one and it is either an unrecognised format or an unsupported
138
207
format, UnknownFormatError or UnsupportedFormatError are raised.
139
208
If there is one, it is returned, along with the unused portion of url.
141
control, relpath = bzrdir.BzrDir.open_containing(url,
210
control, relpath = controldir.ControlDir.open_containing(url,
142
211
possible_transports)
143
return control.open_branch(), relpath
212
branch = control.open_branch(possible_transports=possible_transports)
213
return (branch, relpath)
215
def _push_should_merge_tags(self):
216
"""Should _basic_push merge this branch's tags into the target?
218
The default implementation returns False if this branch has no tags,
219
and True the rest of the time. Subclasses may override this.
221
return self.supports_tags() and self.tags.get_tag_dict()
145
223
def get_config(self):
146
return BranchConfig(self)
149
return self.get_config().get_nickname()
224
"""Get a bzrlib.config.BranchConfig for this Branch.
226
This can then be used to get and set configuration options for the
229
:return: A bzrlib.config.BranchConfig.
231
return _mod_config.BranchConfig(self)
233
def get_config_stack(self):
234
"""Get a bzrlib.config.BranchStack for this Branch.
236
This can then be used to get and set configuration options for the
239
:return: A bzrlib.config.BranchStack.
241
return _mod_config.BranchStack(self)
243
def _get_config(self):
244
"""Get the concrete config for just the config in this branch.
246
This is not intended for client use; see Branch.get_config for the
251
:return: An object supporting get_option and set_option.
253
raise NotImplementedError(self._get_config)
255
def store_uncommitted(self, creator):
256
"""Store uncommitted changes from a ShelfCreator.
258
:param creator: The ShelfCreator containing uncommitted changes, or
259
None to delete any stored changes.
260
:raises: ChangesAlreadyStored if the branch already has changes.
262
raise NotImplementedError(self.store_uncommitted)
264
def get_unshelver(self, tree):
265
"""Return a shelf.Unshelver for this branch and tree.
267
:param tree: The tree to use to construct the Unshelver.
268
:return: an Unshelver or None if no changes are stored.
270
raise NotImplementedError(self.get_unshelver)
272
def _get_fallback_repository(self, url, possible_transports):
273
"""Get the repository we fallback to at url."""
274
url = urlutils.join(self.base, url)
275
a_branch = Branch.open(url, possible_transports=possible_transports)
276
return a_branch.repository
279
def _get_tags_bytes(self):
280
"""Get the bytes of a serialised tags dict.
282
Note that not all branches support tags, nor do all use the same tags
283
logic: this method is specific to BasicTags. Other tag implementations
284
may use the same method name and behave differently, safely, because
285
of the double-dispatch via
286
format.make_tags->tags_instance->get_tags_dict.
288
:return: The bytes of the tags file.
289
:seealso: Branch._set_tags_bytes.
291
if self._tags_bytes is None:
292
self._tags_bytes = self._transport.get_bytes('tags')
293
return self._tags_bytes
295
def _get_nick(self, local=False, possible_transports=None):
296
config = self.get_config()
297
# explicit overrides master, but don't look for master if local is True
298
if not local and not config.has_explicit_nickname():
300
master = self.get_master_branch(possible_transports)
301
if master and self.user_url == master.user_url:
302
raise errors.RecursiveBind(self.user_url)
303
if master is not None:
304
# return the master branch value
306
except errors.RecursiveBind, e:
308
except errors.BzrError, e:
309
# Silently fall back to local implicit nick if the master is
311
mutter("Could not connect to bound branch, "
312
"falling back to local nick.\n " + str(e))
313
return config.get_nickname()
151
315
def _set_nick(self, nick):
152
316
self.get_config().set_user_option('nickname', nick, warn_masked=True)
203
468
:return: A dictionary mapping revision_id => dotted revno.
205
last_revision = self.last_revision()
206
revision_graph = repository._old_get_graph(self.repository,
208
merge_sorted_revisions = tsort.merge_sort(
213
470
revision_id_to_revno = dict((rev_id, revno)
214
for seq_num, rev_id, depth, revno, end_of_merge
215
in merge_sorted_revisions)
471
for rev_id, depth, revno, end_of_merge
472
in self.iter_merge_sorted_revisions())
216
473
return revision_id_to_revno
476
def iter_merge_sorted_revisions(self, start_revision_id=None,
477
stop_revision_id=None, stop_rule='exclude', direction='reverse'):
478
"""Walk the revisions for a branch in merge sorted order.
480
Merge sorted order is the output from a merge-aware,
481
topological sort, i.e. all parents come before their
482
children going forward; the opposite for reverse.
484
:param start_revision_id: the revision_id to begin walking from.
485
If None, the branch tip is used.
486
:param stop_revision_id: the revision_id to terminate the walk
487
after. If None, the rest of history is included.
488
:param stop_rule: if stop_revision_id is not None, the precise rule
489
to use for termination:
491
* 'exclude' - leave the stop revision out of the result (default)
492
* 'include' - the stop revision is the last item in the result
493
* 'with-merges' - include the stop revision and all of its
494
merged revisions in the result
495
* 'with-merges-without-common-ancestry' - filter out revisions
496
that are in both ancestries
497
:param direction: either 'reverse' or 'forward':
499
* reverse means return the start_revision_id first, i.e.
500
start at the most recent revision and go backwards in history
501
* forward returns tuples in the opposite order to reverse.
502
Note in particular that forward does *not* do any intelligent
503
ordering w.r.t. depth as some clients of this API may like.
504
(If required, that ought to be done at higher layers.)
506
:return: an iterator over (revision_id, depth, revno, end_of_merge)
509
* revision_id: the unique id of the revision
510
* depth: How many levels of merging deep this node has been
512
* revno_sequence: This field provides a sequence of
513
revision numbers for all revisions. The format is:
514
(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
515
branch that the revno is on. From left to right the REVNO numbers
516
are the sequence numbers within that branch of the revision.
517
* end_of_merge: When True the next node (earlier in history) is
518
part of a different merge.
520
# Note: depth and revno values are in the context of the branch so
521
# we need the full graph to get stable numbers, regardless of the
523
if self._merge_sorted_revisions_cache is None:
524
last_revision = self.last_revision()
525
known_graph = self.repository.get_known_graph_ancestry(
527
self._merge_sorted_revisions_cache = known_graph.merge_sort(
529
filtered = self._filter_merge_sorted_revisions(
530
self._merge_sorted_revisions_cache, start_revision_id,
531
stop_revision_id, stop_rule)
532
# Make sure we don't return revisions that are not part of the
533
# start_revision_id ancestry.
534
filtered = self._filter_start_non_ancestors(filtered)
535
if direction == 'reverse':
537
if direction == 'forward':
538
return reversed(list(filtered))
540
raise ValueError('invalid direction %r' % direction)
542
def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
543
start_revision_id, stop_revision_id, stop_rule):
544
"""Iterate over an inclusive range of sorted revisions."""
545
rev_iter = iter(merge_sorted_revisions)
546
if start_revision_id is not None:
547
for node in rev_iter:
549
if rev_id != start_revision_id:
552
# The decision to include the start or not
553
# depends on the stop_rule if a stop is provided
554
# so pop this node back into the iterator
555
rev_iter = itertools.chain(iter([node]), rev_iter)
557
if stop_revision_id is None:
559
for node in rev_iter:
561
yield (rev_id, node.merge_depth, node.revno,
563
elif stop_rule == 'exclude':
564
for node in rev_iter:
566
if rev_id == stop_revision_id:
568
yield (rev_id, node.merge_depth, node.revno,
570
elif stop_rule == 'include':
571
for node in rev_iter:
573
yield (rev_id, node.merge_depth, node.revno,
575
if rev_id == stop_revision_id:
577
elif stop_rule == 'with-merges-without-common-ancestry':
578
# We want to exclude all revisions that are already part of the
579
# stop_revision_id ancestry.
580
graph = self.repository.get_graph()
581
ancestors = graph.find_unique_ancestors(start_revision_id,
583
for node in rev_iter:
585
if rev_id not in ancestors:
587
yield (rev_id, node.merge_depth, node.revno,
589
elif stop_rule == 'with-merges':
590
stop_rev = self.repository.get_revision(stop_revision_id)
591
if stop_rev.parent_ids:
592
left_parent = stop_rev.parent_ids[0]
594
left_parent = _mod_revision.NULL_REVISION
595
# left_parent is the actual revision we want to stop logging at,
596
# since we want to show the merged revisions after the stop_rev too
597
reached_stop_revision_id = False
598
revision_id_whitelist = []
599
for node in rev_iter:
601
if rev_id == left_parent:
602
# reached the left parent after the stop_revision
604
if (not reached_stop_revision_id or
605
rev_id in revision_id_whitelist):
606
yield (rev_id, node.merge_depth, node.revno,
608
if reached_stop_revision_id or rev_id == stop_revision_id:
609
# only do the merged revs of rev_id from now on
610
rev = self.repository.get_revision(rev_id)
612
reached_stop_revision_id = True
613
revision_id_whitelist.extend(rev.parent_ids)
615
raise ValueError('invalid stop_rule %r' % stop_rule)
617
def _filter_start_non_ancestors(self, rev_iter):
618
# If we started from a dotted revno, we want to consider it as a tip
619
# and don't want to yield revisions that are not part of its
620
# ancestry. Given the order guaranteed by the merge sort, we will see
621
# uninteresting descendants of the first parent of our tip before the
623
first = rev_iter.next()
624
(rev_id, merge_depth, revno, end_of_merge) = first
627
# We start at a mainline revision so by definition, all others
628
# revisions in rev_iter are ancestors
629
for node in rev_iter:
634
pmap = self.repository.get_parent_map([rev_id])
635
parents = pmap.get(rev_id, [])
637
whitelist.update(parents)
639
# If there is no parents, there is nothing of interest left
641
# FIXME: It's hard to test this scenario here as this code is never
642
# called in that case. -- vila 20100322
645
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
647
if rev_id in whitelist:
648
pmap = self.repository.get_parent_map([rev_id])
649
parents = pmap.get(rev_id, [])
650
whitelist.remove(rev_id)
651
whitelist.update(parents)
653
# We've reached the mainline, there is nothing left to
657
# A revision that is not part of the ancestry of our
660
yield (rev_id, merge_depth, revno, end_of_merge)
218
662
def leave_lock_in_place(self):
219
663
"""Tell this branch object not to release the physical lock when this
220
664
object is unlocked.
222
666
If lock_write doesn't return a token, then this method is not supported.
224
668
self.control_files.leave_in_place()
348
842
:raises UnstackableRepositoryFormat: If the repository does not support
351
raise NotImplementedError(self.set_stacked_on_url)
845
if not self._format.supports_stacking():
846
raise errors.UnstackableBranchFormat(self._format, self.user_url)
847
# XXX: Changing from one fallback repository to another does not check
848
# that all the data you need is present in the new fallback.
849
# Possibly it should.
850
self._check_stackable_repo()
853
old_url = self.get_stacked_on_url()
854
except (errors.NotStacked, errors.UnstackableBranchFormat,
855
errors.UnstackableRepositoryFormat):
859
self._activate_fallback_location(url,
860
possible_transports=[self.bzrdir.root_transport])
861
# write this out after the repository is stacked to avoid setting a
862
# stacked config that doesn't work.
863
self._set_config_location('stacked_on_location', url)
866
"""Change a branch to be unstacked, copying data as needed.
868
Don't call this directly, use set_stacked_on_url(None).
870
pb = ui.ui_factory.nested_progress_bar()
872
pb.update(gettext("Unstacking"))
873
# The basic approach here is to fetch the tip of the branch,
874
# including all available ghosts, from the existing stacked
875
# repository into a new repository object without the fallbacks.
877
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
878
# correct for CHKMap repostiories
879
old_repository = self.repository
880
if len(old_repository._fallback_repositories) != 1:
881
raise AssertionError("can't cope with fallback repositories "
882
"of %r (fallbacks: %r)" % (old_repository,
883
old_repository._fallback_repositories))
884
# Open the new repository object.
885
# Repositories don't offer an interface to remove fallback
886
# repositories today; take the conceptually simpler option and just
887
# reopen it. We reopen it starting from the URL so that we
888
# get a separate connection for RemoteRepositories and can
889
# stream from one of them to the other. This does mean doing
890
# separate SSH connection setup, but unstacking is not a
891
# common operation so it's tolerable.
892
new_bzrdir = controldir.ControlDir.open(
893
self.bzrdir.root_transport.base)
894
new_repository = new_bzrdir.find_repository()
895
if new_repository._fallback_repositories:
896
raise AssertionError("didn't expect %r to have "
897
"fallback_repositories"
898
% (self.repository,))
899
# Replace self.repository with the new repository.
900
# Do our best to transfer the lock state (i.e. lock-tokens and
901
# lock count) of self.repository to the new repository.
902
lock_token = old_repository.lock_write().repository_token
903
self.repository = new_repository
904
if isinstance(self, remote.RemoteBranch):
905
# Remote branches can have a second reference to the old
906
# repository that need to be replaced.
907
if self._real_branch is not None:
908
self._real_branch.repository = new_repository
909
self.repository.lock_write(token=lock_token)
910
if lock_token is not None:
911
old_repository.leave_lock_in_place()
912
old_repository.unlock()
913
if lock_token is not None:
914
# XXX: self.repository.leave_lock_in_place() before this
915
# function will not be preserved. Fortunately that doesn't
916
# affect the current default format (2a), and would be a
917
# corner-case anyway.
918
# - Andrew Bennetts, 2010/06/30
919
self.repository.dont_leave_lock_in_place()
923
old_repository.unlock()
924
except errors.LockNotHeld:
927
if old_lock_count == 0:
928
raise AssertionError(
929
'old_repository should have been locked at least once.')
930
for i in range(old_lock_count-1):
931
self.repository.lock_write()
932
# Fetch from the old repository into the new.
933
old_repository.lock_read()
935
# XXX: If you unstack a branch while it has a working tree
936
# with a pending merge, the pending-merged revisions will no
937
# longer be present. You can (probably) revert and remerge.
939
tags_to_fetch = set(self.tags.get_reverse_tag_dict())
940
except errors.TagsNotSupported:
941
tags_to_fetch = set()
942
fetch_spec = vf_search.NotInOtherForRevs(self.repository,
943
old_repository, required_ids=[self.last_revision()],
944
if_present_ids=tags_to_fetch, find_ghosts=True).execute()
945
self.repository.fetch(old_repository, fetch_spec=fetch_spec)
947
old_repository.unlock()
951
def _set_tags_bytes(self, bytes):
952
"""Mirror method for _get_tags_bytes.
954
:seealso: Branch._get_tags_bytes.
956
op = cleanup.OperationWithCleanups(self._set_tags_bytes_locked)
957
op.add_cleanup(self.lock_write().unlock)
958
return op.run_simple(bytes)
960
def _set_tags_bytes_locked(self, bytes):
961
self._tags_bytes = bytes
962
return self._transport.put_bytes('tags', bytes)
353
964
def _cache_revision_history(self, rev_history):
354
965
"""Set the cached revision history to rev_history.
440
1046
:return: A tuple (revno, revision_id).
442
1048
if self._last_revision_info_cache is None:
443
self._last_revision_info_cache = self._last_revision_info()
1049
self._last_revision_info_cache = self._read_last_revision_info()
444
1050
return self._last_revision_info_cache
446
def _last_revision_info(self):
447
rh = self.revision_history()
450
return (revno, rh[-1])
452
return (0, _mod_revision.NULL_REVISION)
454
@deprecated_method(deprecated_in((1, 6, 0)))
455
def missing_revisions(self, other, stop_revision=None):
456
"""Return a list of new revisions that would perfectly fit.
458
If self and other have not diverged, return a list of the revisions
459
present in other, but missing from self.
461
self_history = self.revision_history()
462
self_len = len(self_history)
463
other_history = other.revision_history()
464
other_len = len(other_history)
465
common_index = min(self_len, other_len) -1
466
if common_index >= 0 and \
467
self_history[common_index] != other_history[common_index]:
468
raise errors.DivergedBranches(self, other)
470
if stop_revision is None:
471
stop_revision = other_len
473
if stop_revision > other_len:
474
raise errors.NoSuchRevision(self, stop_revision)
475
return other_history[self_len:stop_revision]
478
def update_revisions(self, other, stop_revision=None, overwrite=False,
480
"""Pull in new perfect-fit revisions.
482
:param other: Another Branch to pull from
483
:param stop_revision: Updated until the given revision
484
:param overwrite: Always set the branch pointer, rather than checking
485
to see if it is a proper descendant.
486
:param graph: A Graph object that can be used to query history
487
information. This can be None.
492
other_revno, other_last_revision = other.last_revision_info()
493
stop_revno = None # unknown
494
if stop_revision is None:
495
stop_revision = other_last_revision
496
if _mod_revision.is_null(stop_revision):
497
# if there are no commits, we're done.
499
stop_revno = other_revno
501
# what's the current last revision, before we fetch [and change it
503
last_rev = _mod_revision.ensure_null(self.last_revision())
504
# we fetch here so that we don't process data twice in the common
505
# case of having something to pull, and so that the check for
506
# already merged can operate on the just fetched graph, which will
507
# be cached in memory.
508
self.fetch(other, stop_revision)
509
# Check to see if one is an ancestor of the other
512
graph = self.repository.get_graph()
513
if self._check_if_descendant_or_diverged(
514
stop_revision, last_rev, graph, other):
515
# stop_revision is a descendant of last_rev, but we aren't
516
# overwriting, so we're done.
518
if stop_revno is None:
520
graph = self.repository.get_graph()
521
this_revno, this_last_revision = self.last_revision_info()
522
stop_revno = graph.find_distance_to_null(stop_revision,
523
[(other_last_revision, other_revno),
524
(this_last_revision, this_revno)])
525
self.set_last_revision_info(stop_revno, stop_revision)
1052
def _read_last_revision_info(self):
1053
raise NotImplementedError(self._read_last_revision_info)
1055
def import_last_revision_info_and_tags(self, source, revno, revid,
1057
"""Set the last revision info, importing from another repo if necessary.
1059
This is used by the bound branch code to upload a revision to
1060
the master branch first before updating the tip of the local branch.
1061
Revisions referenced by source's tags are also transferred.
1063
:param source: Source branch to optionally fetch from
1064
:param revno: Revision number of the new tip
1065
:param revid: Revision id of the new tip
1066
:param lossy: Whether to discard metadata that can not be
1067
natively represented
1068
:return: Tuple with the new revision number and revision id
1069
(should only be different from the arguments when lossy=True)
1071
if not self.repository.has_same_location(source.repository):
1072
self.fetch(source, revid)
1073
self.set_last_revision_info(revno, revid)
1074
return (revno, revid)
529
1076
def revision_id_to_revno(self, revision_id):
530
1077
"""Given a revision id, return its revno"""
531
1078
if _mod_revision.is_null(revision_id):
533
history = self.revision_history()
1080
history = self._revision_history()
535
1082
return history.index(revision_id) + 1
536
1083
except ValueError:
537
1084
raise errors.NoSuchRevision(self, revision_id)
539
1087
def get_rev_id(self, revno, history=None):
540
1088
"""Find the revision id of the specified revno."""
542
1090
return _mod_revision.NULL_REVISION
544
history = self.revision_history()
545
if revno <= 0 or revno > len(history):
1091
last_revno, last_revid = self.last_revision_info()
1092
if revno == last_revno:
1094
if revno <= 0 or revno > last_revno:
546
1095
raise errors.NoSuchRevision(self, revno)
547
return history[revno - 1]
1096
distance_from_last = last_revno - revno
1097
if len(self._partial_revision_history_cache) <= distance_from_last:
1098
self._extend_partial_history(distance_from_last)
1099
return self._partial_revision_history_cache[distance_from_last]
549
1101
def pull(self, source, overwrite=False, stop_revision=None,
550
possible_transports=None, _override_hook_target=None):
1102
possible_transports=None, *args, **kwargs):
551
1103
"""Mirror source into this branch.
553
1105
This branch is considered to be 'local', having low latency.
555
1107
:returns: PullResult instance
557
raise NotImplementedError(self.pull)
1109
return InterBranch.get(source, self).pull(overwrite=overwrite,
1110
stop_revision=stop_revision,
1111
possible_transports=possible_transports, *args, **kwargs)
559
def push(self, target, overwrite=False, stop_revision=None):
1113
def push(self, target, overwrite=False, stop_revision=None, lossy=False,
560
1115
"""Mirror this branch into target.
562
1117
This branch is considered to be 'local', having low latency.
564
raise NotImplementedError(self.push)
1119
return InterBranch.get(self, target).push(overwrite, stop_revision,
1120
lossy, *args, **kwargs)
566
1122
def basis_tree(self):
567
1123
"""Return `Tree` object for last revision."""
685
1285
revision_id: if not None, the revision history in the new branch will
686
1286
be truncated to end with revision_id.
688
result = to_bzrdir.create_branch()
689
self.copy_content_into(result, revision_id=revision_id)
690
result.set_parent(self.bzrdir.root_transport.base)
1288
if (repository_policy is not None and
1289
repository_policy.requires_stacking()):
1290
to_bzrdir._format.require_stacking(_skip_repo=True)
1291
result = to_bzrdir.create_branch(repository=repository)
1294
if repository_policy is not None:
1295
repository_policy.configure_branch(result)
1296
self.copy_content_into(result, revision_id=revision_id)
1297
master_url = self.get_bound_location()
1298
if master_url is None:
1299
result.set_parent(self.bzrdir.root_transport.base)
1301
result.set_parent(master_url)
693
1306
def _synchronize_history(self, destination, revision_id):
694
1307
"""Synchronize last revision and revision history between branches.
696
1309
This version is most efficient when the destination is also a
697
BzrBranch5, but works for BzrBranch6 as long as the revision
698
history is the true lefthand parent history, and all of the revisions
699
are in the destination's repository. If not, set_revision_history
1310
BzrBranch6, but works for BzrBranch5, as long as the destination's
1311
repository contains all the lefthand ancestors of the intended
1312
last_revision. If not, set_last_revision_info will fail.
702
1314
:param destination: The branch to copy the history into
703
1315
:param revision_id: The revision-id to truncate history at. May
704
1316
be None to copy complete history.
706
if revision_id == _mod_revision.NULL_REVISION:
1318
source_revno, source_revision_id = self.last_revision_info()
1319
if revision_id is None:
1320
revno, revision_id = source_revno, source_revision_id
709
new_history = self.revision_history()
710
if revision_id is not None and new_history != []:
1322
graph = self.repository.get_graph()
712
new_history = new_history[:new_history.index(revision_id) + 1]
714
rev = self.repository.get_revision(revision_id)
715
new_history = rev.get_history(self.repository)[1:]
716
destination.set_revision_history(new_history)
1324
revno = graph.find_distance_to_null(revision_id,
1325
[(source_revision_id, source_revno)])
1326
except errors.GhostRevisionsHaveNoRevno:
1327
# Default to 1, if we can't find anything else
1329
destination.set_last_revision_info(revno, revision_id)
719
1331
def copy_content_into(self, destination, revision_id=None):
720
1332
"""Copy the content of self into destination.
722
1334
revision_id: if not None, the revision history in the new branch will
723
1335
be truncated to end with revision_id.
725
self._synchronize_history(destination, revision_id)
727
parent = self.get_parent()
728
except errors.InaccessibleParent, e:
729
mutter('parent was not accessible to copy: %s', e)
732
destination.set_parent(parent)
733
self.tags.merge_to(destination.tags)
1337
return InterBranch.get(self, destination).copy_content_into(
1338
revision_id=revision_id)
1340
def update_references(self, target):
1341
if not getattr(self._format, 'supports_reference_locations', False):
1343
reference_dict = self._get_all_reference_info()
1344
if len(reference_dict) == 0:
1346
old_base = self.base
1347
new_base = target.base
1348
target_reference_dict = target._get_all_reference_info()
1349
for file_id, (tree_path, branch_location) in (
1350
reference_dict.items()):
1351
branch_location = urlutils.rebase_url(branch_location,
1353
target_reference_dict.setdefault(
1354
file_id, (tree_path, branch_location))
1355
target._set_all_reference_info(target_reference_dict)
735
1357
@needs_read_lock
1358
def check(self, refs):
737
1359
"""Check consistency of the branch.
739
1361
In particular this checks that revisions given in the revision-history
740
do actually match up in the revision graph, and that they're all
1362
do actually match up in the revision graph, and that they're all
741
1363
present in the repository.
743
1365
Callers will typically also want to check the repository.
1367
:param refs: Calculated refs for this branch as specified by
1368
branch._get_check_refs()
745
1369
:return: A BranchCheckResult.
747
mainline_parent_id = None
1371
result = BranchCheckResult(self)
748
1372
last_revno, last_revision_id = self.last_revision_info()
749
real_rev_history = list(self.repository.iter_reverse_revision_history(
751
real_rev_history.reverse()
752
if len(real_rev_history) != last_revno:
753
raise errors.BzrCheckError('revno does not match len(mainline)'
754
' %s != %s' % (last_revno, len(real_rev_history)))
755
# TODO: We should probably also check that real_rev_history actually
756
# matches self.revision_history()
757
for revision_id in real_rev_history:
759
revision = self.repository.get_revision(revision_id)
760
except errors.NoSuchRevision, e:
761
raise errors.BzrCheckError("mainline revision {%s} not in repository"
763
# In general the first entry on the revision history has no parents.
764
# But it's not illegal for it to have parents listed; this can happen
765
# in imports from Arch when the parents weren't reachable.
766
if mainline_parent_id is not None:
767
if mainline_parent_id not in revision.parent_ids:
768
raise errors.BzrCheckError("previous revision {%s} not listed among "
770
% (mainline_parent_id, revision_id))
771
mainline_parent_id = revision_id
772
return BranchCheckResult(self)
1373
actual_revno = refs[('lefthand-distance', last_revision_id)]
1374
if actual_revno != last_revno:
1375
result.errors.append(errors.BzrCheckError(
1376
'revno does not match len(mainline) %s != %s' % (
1377
last_revno, actual_revno)))
1378
# TODO: We should probably also check that self.revision_history
1379
# matches the repository for older branch formats.
1380
# If looking for the code that cross-checks repository parents against
1381
# the Graph.iter_lefthand_ancestry output, that is now a repository
774
def _get_checkout_format(self):
1385
def _get_checkout_format(self, lightweight=False):
775
1386
"""Return the most suitable metadir for a checkout of this branch.
776
1387
Weaves are used if this branch's repository uses weaves.
778
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
779
from bzrlib.repofmt import weaverepo
780
format = bzrdir.BzrDirMetaFormat1()
781
format.repository_format = weaverepo.RepositoryFormat7()
783
format = self.repository.bzrdir.checkout_metadir()
784
format.set_branch_format(self._format)
1389
format = self.repository.bzrdir.checkout_metadir()
1390
format.set_branch_format(self._format)
1393
def create_clone_on_transport(self, to_transport, revision_id=None,
1394
stacked_on=None, create_prefix=False, use_existing_dir=False,
1396
"""Create a clone of this branch and its bzrdir.
1398
:param to_transport: The transport to clone onto.
1399
:param revision_id: The revision id to use as tip in the new branch.
1400
If None the tip is obtained from this branch.
1401
:param stacked_on: An optional URL to stack the clone on.
1402
:param create_prefix: Create any missing directories leading up to
1404
:param use_existing_dir: Use an existing directory if one exists.
1406
# XXX: Fix the bzrdir API to allow getting the branch back from the
1407
# clone call. Or something. 20090224 RBC/spiv.
1408
# XXX: Should this perhaps clone colocated branches as well,
1409
# rather than just the default branch? 20100319 JRV
1410
if revision_id is None:
1411
revision_id = self.last_revision()
1412
dir_to = self.bzrdir.clone_on_transport(to_transport,
1413
revision_id=revision_id, stacked_on=stacked_on,
1414
create_prefix=create_prefix, use_existing_dir=use_existing_dir,
1416
return dir_to.open_branch()
787
1418
def create_checkout(self, to_location, revision_id=None,
788
1419
lightweight=False, accelerator_tree=None,
789
1420
hardlink=False):
790
1421
"""Create a checkout of a branch.
792
1423
:param to_location: The url to produce the checkout at
793
1424
:param revision_id: The revision to check out
794
1425
:param lightweight: If True, produce a lightweight checkout, otherwise,
795
produce a bound branch (heavyweight checkout)
1426
produce a bound branch (heavyweight checkout)
796
1427
:param accelerator_tree: A tree which can be used for retrieving file
797
1428
contents more quickly than the revision tree, i.e. a workingtree.
798
1429
The revision tree will be used for cases where accelerator_tree's
889
1549
raise AssertionError("invalid heads: %r" % (heads,))
892
class BranchFormat(object):
1551
def heads_to_fetch(self):
1552
"""Return the heads that must and that should be fetched to copy this
1553
branch into another repo.
1555
:returns: a 2-tuple of (must_fetch, if_present_fetch). must_fetch is a
1556
set of heads that must be fetched. if_present_fetch is a set of
1557
heads that must be fetched if present, but no error is necessary if
1558
they are not present.
1560
# For bzr native formats must_fetch is just the tip, and
1561
# if_present_fetch are the tags.
1562
must_fetch = set([self.last_revision()])
1563
if_present_fetch = set()
1564
if self.get_config_stack().get('branch.fetch_tags'):
1566
if_present_fetch = set(self.tags.get_reverse_tag_dict())
1567
except errors.TagsNotSupported:
1569
must_fetch.discard(_mod_revision.NULL_REVISION)
1570
if_present_fetch.discard(_mod_revision.NULL_REVISION)
1571
return must_fetch, if_present_fetch
1574
class BranchFormat(controldir.ControlComponentFormat):
893
1575
"""An encapsulation of the initialization and open routines for a format.
895
1577
Formats provide three things:
896
1578
* An initialization routine,
1579
* a format description
898
1580
* an open routine.
900
Formats are placed in an dict by their format string for reference
901
during branch opening. Its not required that these be instances, they
902
can be classes themselves with class methods - it simply depends on
1582
Formats are placed in an dict by their format string for reference
1583
during branch opening. It's not required that these be instances, they
1584
can be classes themselves with class methods - it simply depends on
903
1585
whether state is needed for a given format or not.
905
1587
Once a format is deprecated, just deprecate the initialize and open
906
methods on the format class. Do not deprecate the object, as the
1588
methods on the format class. Do not deprecate the object, as the
907
1589
object will be created every time regardless.
910
_default_format = None
911
"""The default format used for new branches."""
914
"""The known formats."""
916
1592
def __eq__(self, other):
917
1593
return self.__class__ is other.__class__
919
1595
def __ne__(self, other):
920
1596
return not (self == other)
923
def find_format(klass, a_bzrdir):
924
"""Return the format for the branch object in a_bzrdir."""
926
transport = a_bzrdir.get_branch_transport(None)
927
format_string = transport.get("format").read()
928
return klass._formats[format_string]
929
except errors.NoSuchFile:
930
raise errors.NotBranchError(path=transport.base)
932
raise errors.UnknownFormatError(format=format_string, kind='branch')
935
def get_default_format(klass):
936
"""Return the current default format."""
937
return klass._default_format
939
def get_reference(self, a_bzrdir):
940
"""Get the target reference of the branch in a_bzrdir.
1598
def get_reference(self, controldir, name=None):
1599
"""Get the target reference of the branch in controldir.
942
1601
format probing must have been completed before calling
943
1602
this method - it is assumed that the format of the branch
944
in a_bzrdir is correct.
1603
in controldir is correct.
946
:param a_bzrdir: The bzrdir to get the branch data from.
1605
:param controldir: The controldir to get the branch data from.
1606
:param name: Name of the colocated branch to fetch
947
1607
:return: None if the branch is not a reference branch.
952
def set_reference(self, a_bzrdir, to_branch):
953
"""Set the target reference of the branch in a_bzrdir.
1612
def set_reference(self, controldir, name, to_branch):
1613
"""Set the target reference of the branch in controldir.
955
1615
format probing must have been completed before calling
956
1616
this method - it is assumed that the format of the branch
957
in a_bzrdir is correct.
1617
in controldir is correct.
959
:param a_bzrdir: The bzrdir to set the branch reference for.
1619
:param controldir: The controldir to set the branch reference for.
1620
:param name: Name of colocated branch to set, None for default
960
1621
:param to_branch: branch that the checkout is to reference
962
1623
raise NotImplementedError(self.set_reference)
964
def get_format_string(self):
965
"""Return the ASCII format string that identifies this format."""
966
raise NotImplementedError(self.get_format_string)
968
1625
def get_format_description(self):
969
1626
"""Return the short format description for this format."""
970
1627
raise NotImplementedError(self.get_format_description)
972
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
974
"""Initialize a branch in a bzrdir, with specified files
976
:param a_bzrdir: The bzrdir to initialize the branch in
977
:param utf8_files: The files to create as a list of
978
(filename, content) tuples
979
:param set_format: If True, set the format with
980
self.get_format_string. (BzrBranch4 has its format set
982
:return: a branch in this format
1629
def _run_post_branch_init_hooks(self, controldir, name, branch):
1630
hooks = Branch.hooks['post_branch_init']
1633
params = BranchInitHookParams(self, controldir, name, branch)
1637
def initialize(self, controldir, name=None, repository=None,
1638
append_revisions_only=None):
1639
"""Create a branch of this format in controldir.
1641
:param name: Name of the colocated branch to create.
984
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
985
branch_transport = a_bzrdir.get_branch_transport(self)
987
'metadir': ('lock', lockdir.LockDir),
988
'branch4': ('branch-lock', lockable_files.TransportLock),
990
lock_name, lock_class = lock_map[lock_type]
991
control_files = lockable_files.LockableFiles(branch_transport,
992
lock_name, lock_class)
993
control_files.create_lock()
994
control_files.lock_write()
996
utf8_files += [('format', self.get_format_string())]
998
for (filename, content) in utf8_files:
999
branch_transport.put_bytes(
1001
mode=a_bzrdir._get_file_mode())
1003
control_files.unlock()
1004
return self.open(a_bzrdir, _found=True)
1006
def initialize(self, a_bzrdir):
1007
"""Create a branch of this format in a_bzrdir."""
1008
1643
raise NotImplementedError(self.initialize)
1010
1645
def is_supported(self):
1011
1646
"""Is this format supported?
1013
1648
Supported formats can be initialized and opened.
1014
Unsupported formats may not support initialization or committing or
1649
Unsupported formats may not support initialization or committing or
1015
1650
some other features depending on the reason for not being supported.
1019
def open(self, a_bzrdir, _found=False):
1020
"""Return the branch object for a_bzrdir
1022
_found is a private parameter, do not use it. It is used to indicate
1023
if format probing has already be done.
1654
def make_tags(self, branch):
1655
"""Create a tags object for branch.
1657
This method is on BranchFormat, because BranchFormats are reflected
1658
over the wire via network_name(), whereas full Branch instances require
1659
multiple VFS method calls to operate at all.
1661
The default implementation returns a disabled-tags instance.
1663
Note that it is normal for branch to be a RemoteBranch when using tags
1666
return _mod_tag.DisabledTags(branch)
1668
def network_name(self):
1669
"""A simple byte string uniquely identifying this format for RPC calls.
1671
MetaDir branch formats use their disk format string to identify the
1672
repository over the wire. All in one formats such as bzr < 0.8, and
1673
foreign formats like svn/git and hg should use some marker which is
1674
unique and immutable.
1676
raise NotImplementedError(self.network_name)
1678
def open(self, controldir, name=None, _found=False, ignore_fallbacks=False,
1679
found_repository=None, possible_transports=None):
1680
"""Return the branch object for controldir.
1682
:param controldir: A ControlDir that contains a branch.
1683
:param name: Name of colocated branch to open
1684
:param _found: a private parameter, do not use it. It is used to
1685
indicate if format probing has already be done.
1686
:param ignore_fallbacks: when set, no fallback branches will be opened
1687
(if there are any). Default is to open fallbacks.
1025
1689
raise NotImplementedError(self.open)
1028
def register_format(klass, format):
1029
klass._formats[format.get_format_string()] = format
1032
def set_default_format(klass, format):
1033
klass._default_format = format
1691
def supports_set_append_revisions_only(self):
1692
"""True if this format supports set_append_revisions_only."""
1035
1695
def supports_stacking(self):
1036
1696
"""True if this format records a stacked-on branch."""
1040
def unregister_format(klass, format):
1041
del klass._formats[format.get_format_string()]
1699
def supports_leaving_lock(self):
1700
"""True if this format supports leaving locks in place."""
1701
return False # by default
1043
1703
def __str__(self):
1044
return self.get_format_string().rstrip()
1704
return self.get_format_description().rstrip()
1046
1706
def supports_tags(self):
1047
1707
"""True if this format supports tags stored in the branch"""
1048
1708
return False # by default
1710
def tags_are_versioned(self):
1711
"""Whether the tag container for this branch versions tags."""
1714
def supports_tags_referencing_ghosts(self):
1715
"""True if tags can reference ghost revisions."""
1719
class MetaDirBranchFormatFactory(registry._LazyObjectGetter):
1720
"""A factory for a BranchFormat object, permitting simple lazy registration.
1722
While none of the built in BranchFormats are lazy registered yet,
1723
bzrlib.tests.test_branch.TestMetaDirBranchFormatFactory demonstrates how to
1724
use it, and the bzr-loom plugin uses it as well (see
1725
bzrlib.plugins.loom.formats).
1728
def __init__(self, format_string, module_name, member_name):
1729
"""Create a MetaDirBranchFormatFactory.
1731
:param format_string: The format string the format has.
1732
:param module_name: Module to load the format class from.
1733
:param member_name: Attribute name within the module for the format class.
1735
registry._LazyObjectGetter.__init__(self, module_name, member_name)
1736
self._format_string = format_string
1738
def get_format_string(self):
1739
"""See BranchFormat.get_format_string."""
1740
return self._format_string
1743
"""Used for network_format_registry support."""
1744
return self.get_obj()()
1051
1747
class BranchHooks(Hooks):
1052
1748
"""A dictionary mapping hook name to a list of callables for branch hooks.
1054
e.g. ['set_rh'] Is the list of items to be called when the
1055
set_revision_history function is invoked.
1750
e.g. ['post_push'] Is the list of items to be called when the
1751
push function is invoked.
1058
1754
def __init__(self):
1061
1757
These are all empty initially, because by default nothing should get
1064
Hooks.__init__(self)
1065
# Introduced in 0.15:
1066
# invoked whenever the revision history has been set
1067
# with set_revision_history. The api signature is
1068
# (branch, revision_history), and the branch will
1071
# invoked after a push operation completes.
1072
# the api signature is
1074
# containing the members
1075
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1076
# where local is the local target branch or None, master is the target
1077
# master branch, and the rest should be self explanatory. The source
1078
# is read locked and the target branches write locked. Source will
1079
# be the local low-latency branch.
1080
self['post_push'] = []
1081
# invoked after a pull operation completes.
1082
# the api signature is
1084
# containing the members
1085
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1086
# where local is the local branch or None, master is the target
1087
# master branch, and the rest should be self explanatory. The source
1088
# is read locked and the target branches write locked. The local
1089
# branch is the low-latency branch.
1090
self['post_pull'] = []
1091
# invoked before a commit operation takes place.
1092
# the api signature is
1093
# (local, master, old_revno, old_revid, future_revno, future_revid,
1094
# tree_delta, future_tree).
1095
# old_revid is NULL_REVISION for the first commit to a branch
1096
# tree_delta is a TreeDelta object describing changes from the basis
1097
# revision, hooks MUST NOT modify this delta
1098
# future_tree is an in-memory tree obtained from
1099
# CommitBuilder.revision_tree() and hooks MUST NOT modify this tree
1100
self['pre_commit'] = []
1101
# invoked after a commit operation completes.
1102
# the api signature is
1103
# (local, master, old_revno, old_revid, new_revno, new_revid)
1104
# old_revid is NULL_REVISION for the first commit to a branch.
1105
self['post_commit'] = []
1106
# invoked after a uncommit operation completes.
1107
# the api signature is
1108
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1109
# local is the local branch or None, master is the target branch,
1110
# and an empty branch recieves new_revno of 0, new_revid of None.
1111
self['post_uncommit'] = []
1113
# Invoked before the tip of a branch changes.
1114
# the api signature is
1115
# (params) where params is a ChangeBranchTipParams with the members
1116
# (branch, old_revno, new_revno, old_revid, new_revid)
1117
self['pre_change_branch_tip'] = []
1119
# Invoked after the tip of a branch changes.
1120
# the api signature is
1121
# (params) where params is a ChangeBranchTipParams with the members
1122
# (branch, old_revno, new_revno, old_revid, new_revid)
1123
self['post_change_branch_tip'] = []
1760
Hooks.__init__(self, "bzrlib.branch", "Branch.hooks")
1761
self.add_hook('open',
1762
"Called with the Branch object that has been opened after a "
1763
"branch is opened.", (1, 8))
1764
self.add_hook('post_push',
1765
"Called after a push operation completes. post_push is called "
1766
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1767
"bzr client.", (0, 15))
1768
self.add_hook('post_pull',
1769
"Called after a pull operation completes. post_pull is called "
1770
"with a bzrlib.branch.PullResult object and only runs in the "
1771
"bzr client.", (0, 15))
1772
self.add_hook('pre_commit',
1773
"Called after a commit is calculated but before it is "
1774
"completed. pre_commit is called with (local, master, old_revno, "
1775
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1776
"). old_revid is NULL_REVISION for the first commit to a branch, "
1777
"tree_delta is a TreeDelta object describing changes from the "
1778
"basis revision. hooks MUST NOT modify this delta. "
1779
" future_tree is an in-memory tree obtained from "
1780
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1782
self.add_hook('post_commit',
1783
"Called in the bzr client after a commit has completed. "
1784
"post_commit is called with (local, master, old_revno, old_revid, "
1785
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1786
"commit to a branch.", (0, 15))
1787
self.add_hook('post_uncommit',
1788
"Called in the bzr client after an uncommit completes. "
1789
"post_uncommit is called with (local, master, old_revno, "
1790
"old_revid, new_revno, new_revid) where local is the local branch "
1791
"or None, master is the target branch, and an empty branch "
1792
"receives new_revno of 0, new_revid of None.", (0, 15))
1793
self.add_hook('pre_change_branch_tip',
1794
"Called in bzr client and server before a change to the tip of a "
1795
"branch is made. pre_change_branch_tip is called with a "
1796
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1797
"commit, uncommit will all trigger this hook.", (1, 6))
1798
self.add_hook('post_change_branch_tip',
1799
"Called in bzr client and server after a change to the tip of a "
1800
"branch is made. post_change_branch_tip is called with a "
1801
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1802
"commit, uncommit will all trigger this hook.", (1, 4))
1803
self.add_hook('transform_fallback_location',
1804
"Called when a stacked branch is activating its fallback "
1805
"locations. transform_fallback_location is called with (branch, "
1806
"url), and should return a new url. Returning the same url "
1807
"allows it to be used as-is, returning a different one can be "
1808
"used to cause the branch to stack on a closer copy of that "
1809
"fallback_location. Note that the branch cannot have history "
1810
"accessing methods called on it during this hook because the "
1811
"fallback locations have not been activated. When there are "
1812
"multiple hooks installed for transform_fallback_location, "
1813
"all are called with the url returned from the previous hook."
1814
"The order is however undefined.", (1, 9))
1815
self.add_hook('automatic_tag_name',
1816
"Called to determine an automatic tag name for a revision. "
1817
"automatic_tag_name is called with (branch, revision_id) and "
1818
"should return a tag name or None if no tag name could be "
1819
"determined. The first non-None tag name returned will be used.",
1821
self.add_hook('post_branch_init',
1822
"Called after new branch initialization completes. "
1823
"post_branch_init is called with a "
1824
"bzrlib.branch.BranchInitHookParams. "
1825
"Note that init, branch and checkout (both heavyweight and "
1826
"lightweight) will all trigger this hook.", (2, 2))
1827
self.add_hook('post_switch',
1828
"Called after a checkout switches branch. "
1829
"post_switch is called with a "
1830
"bzrlib.branch.SwitchHookParams.", (2, 2))
1126
1834
# install the default hooks into the Branch class.
1159
1867
def __eq__(self, other):
1160
1868
return self.__dict__ == other.__dict__
1162
1870
def __repr__(self):
1163
1871
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1164
self.__class__.__name__, self.branch,
1872
self.__class__.__name__, self.branch,
1165
1873
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1168
class BzrBranchFormat4(BranchFormat):
1169
"""Bzr branch format 4.
1172
- a revision-history file.
1173
- a branch-lock lock file [ to be shared with the bzrdir ]
1176
def get_format_description(self):
1177
"""See BranchFormat.get_format_description()."""
1178
return "Branch format 4"
1180
def initialize(self, a_bzrdir):
1181
"""Create a branch of this format in a_bzrdir."""
1182
utf8_files = [('revision-history', ''),
1183
('branch-name', ''),
1185
return self._initialize_helper(a_bzrdir, utf8_files,
1186
lock_type='branch4', set_format=False)
1876
class BranchInitHookParams(object):
1877
"""Object holding parameters passed to `*_branch_init` hooks.
1879
There are 4 fields that hooks may wish to access:
1881
:ivar format: the branch format
1882
:ivar bzrdir: the ControlDir where the branch will be/has been initialized
1883
:ivar name: name of colocated branch, if any (or None)
1884
:ivar branch: the branch created
1886
Note that for lightweight checkouts, the bzrdir and format fields refer to
1887
the checkout, hence they are different from the corresponding fields in
1888
branch, which refer to the original branch.
1891
def __init__(self, format, controldir, name, branch):
1892
"""Create a group of BranchInitHook parameters.
1894
:param format: the branch format
1895
:param controldir: the ControlDir where the branch will be/has been
1897
:param name: name of colocated branch, if any (or None)
1898
:param branch: the branch created
1900
Note that for lightweight checkouts, the bzrdir and format fields refer
1901
to the checkout, hence they are different from the corresponding fields
1902
in branch, which refer to the original branch.
1904
self.format = format
1905
self.bzrdir = controldir
1907
self.branch = branch
1909
def __eq__(self, other):
1910
return self.__dict__ == other.__dict__
1913
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1916
class SwitchHookParams(object):
1917
"""Object holding parameters passed to `*_switch` hooks.
1919
There are 4 fields that hooks may wish to access:
1921
:ivar control_dir: ControlDir of the checkout to change
1922
:ivar to_branch: branch that the checkout is to reference
1923
:ivar force: skip the check for local commits in a heavy checkout
1924
:ivar revision_id: revision ID to switch to (or None)
1927
def __init__(self, control_dir, to_branch, force, revision_id):
1928
"""Create a group of SwitchHook parameters.
1930
:param control_dir: ControlDir of the checkout to change
1931
:param to_branch: branch that the checkout is to reference
1932
:param force: skip the check for local commits in a heavy checkout
1933
:param revision_id: revision ID to switch to (or None)
1935
self.control_dir = control_dir
1936
self.to_branch = to_branch
1938
self.revision_id = revision_id
1940
def __eq__(self, other):
1941
return self.__dict__ == other.__dict__
1944
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1945
self.control_dir, self.to_branch,
1949
class BranchFormatMetadir(bzrdir.BzrFormat, BranchFormat):
1950
"""Base class for branch formats that live in meta directories.
1188
1953
def __init__(self):
1189
super(BzrBranchFormat4, self).__init__()
1190
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1192
def open(self, a_bzrdir, _found=False):
1193
"""Return the branch object for a_bzrdir
1195
_found is a private parameter, do not use it. It is used to indicate
1196
if format probing has already be done.
1199
# we are being called directly and must probe.
1200
raise NotImplementedError
1201
return BzrBranch(_format=self,
1202
_control_files=a_bzrdir._control_files,
1204
_repository=a_bzrdir.open_repository())
1207
return "Bazaar-NG branch format 4"
1210
class BranchFormatMetadir(BranchFormat):
1211
"""Common logic for meta-dir based branch formats."""
1954
BranchFormat.__init__(self)
1955
bzrdir.BzrFormat.__init__(self)
1958
def find_format(klass, controldir, name=None):
1959
"""Return the format for the branch object in controldir."""
1961
transport = controldir.get_branch_transport(None, name=name)
1962
except errors.NoSuchFile:
1963
raise errors.NotBranchError(path=name, bzrdir=controldir)
1965
format_string = transport.get_bytes("format")
1966
except errors.NoSuchFile:
1967
raise errors.NotBranchError(path=transport.base, bzrdir=controldir)
1968
return klass._find_format(format_registry, 'branch', format_string)
1213
1970
def _branch_class(self):
1214
1971
"""What class to instantiate on open calls."""
1215
1972
raise NotImplementedError(self._branch_class)
1217
def open(self, a_bzrdir, _found=False):
1218
"""Return the branch object for a_bzrdir.
1220
_found is a private parameter, do not use it. It is used to indicate
1221
if format probing has already be done.
1974
def _get_initial_config(self, append_revisions_only=None):
1975
if append_revisions_only:
1976
return "append_revisions_only = True\n"
1978
# Avoid writing anything if append_revisions_only is disabled,
1979
# as that is the default.
1982
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1984
"""Initialize a branch in a control dir, with specified files
1986
:param a_bzrdir: The bzrdir to initialize the branch in
1987
:param utf8_files: The files to create as a list of
1988
(filename, content) tuples
1989
:param name: Name of colocated branch to create, if any
1990
:return: a branch in this format
1993
name = a_bzrdir._get_selected_branch()
1994
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1995
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1996
control_files = lockable_files.LockableFiles(branch_transport,
1997
'lock', lockdir.LockDir)
1998
control_files.create_lock()
1999
control_files.lock_write()
2001
utf8_files += [('format', self.as_string())]
2002
for (filename, content) in utf8_files:
2003
branch_transport.put_bytes(
2005
mode=a_bzrdir._get_file_mode())
2007
control_files.unlock()
2008
branch = self.open(a_bzrdir, name, _found=True,
2009
found_repository=repository)
2010
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
2013
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False,
2014
found_repository=None, possible_transports=None):
2015
"""See BranchFormat.open()."""
2017
name = a_bzrdir._get_selected_branch()
1224
format = BranchFormat.find_format(a_bzrdir)
2019
format = BranchFormatMetadir.find_format(a_bzrdir, name=name)
1225
2020
if format.__class__ != self.__class__:
1226
2021
raise AssertionError("wrong format %r found for %r" %
1227
2022
(format, self))
2023
transport = a_bzrdir.get_branch_transport(None, name=name)
1229
transport = a_bzrdir.get_branch_transport(None)
1230
2025
control_files = lockable_files.LockableFiles(transport, 'lock',
1231
2026
lockdir.LockDir)
2027
if found_repository is None:
2028
found_repository = a_bzrdir.find_repository()
1232
2029
return self._branch_class()(_format=self,
1233
2030
_control_files=control_files,
1234
2032
a_bzrdir=a_bzrdir,
1235
_repository=a_bzrdir.find_repository())
2033
_repository=found_repository,
2034
ignore_fallbacks=ignore_fallbacks,
2035
possible_transports=possible_transports)
1236
2036
except errors.NoSuchFile:
1237
raise errors.NotBranchError(path=transport.base)
1240
super(BranchFormatMetadir, self).__init__()
1241
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1243
def supports_tags(self):
1247
class BzrBranchFormat5(BranchFormatMetadir):
1248
"""Bzr branch format 5.
1251
- a revision-history file.
1253
- a lock dir guarding the branch itself
1254
- all of this stored in a branch/ subdirectory
1255
- works with shared repositories.
1257
This format is new in bzr 0.8.
1260
def _branch_class(self):
1263
def get_format_string(self):
1264
"""See BranchFormat.get_format_string()."""
1265
return "Bazaar-NG branch format 5\n"
1267
def get_format_description(self):
1268
"""See BranchFormat.get_format_description()."""
1269
return "Branch format 5"
1271
def initialize(self, a_bzrdir):
1272
"""Create a branch of this format in a_bzrdir."""
1273
utf8_files = [('revision-history', ''),
1274
('branch-name', ''),
1276
return self._initialize_helper(a_bzrdir, utf8_files)
1278
def supports_tags(self):
2037
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
2040
def _matchingbzrdir(self):
2041
ret = bzrdir.BzrDirMetaFormat1()
2042
ret.set_branch_format(self)
2045
def supports_tags(self):
2048
def supports_leaving_lock(self):
2051
def check_support_status(self, allow_unsupported, recommend_upgrade=True,
2053
BranchFormat.check_support_status(self,
2054
allow_unsupported=allow_unsupported, recommend_upgrade=recommend_upgrade,
2056
bzrdir.BzrFormat.check_support_status(self, allow_unsupported=allow_unsupported,
2057
recommend_upgrade=recommend_upgrade, basedir=basedir)
1282
2060
class BzrBranchFormat6(BranchFormatMetadir):
1366
2201
"""See BranchFormat.get_format_description()."""
1367
2202
return "Checkout reference format 1"
1369
def get_reference(self, a_bzrdir):
2204
def get_reference(self, a_bzrdir, name=None):
1370
2205
"""See BranchFormat.get_reference()."""
1371
transport = a_bzrdir.get_branch_transport(None)
1372
return transport.get('location').read()
2206
transport = a_bzrdir.get_branch_transport(None, name=name)
2207
return transport.get_bytes('location')
1374
def set_reference(self, a_bzrdir, to_branch):
2209
def set_reference(self, a_bzrdir, name, to_branch):
1375
2210
"""See BranchFormat.set_reference()."""
1376
transport = a_bzrdir.get_branch_transport(None)
2211
transport = a_bzrdir.get_branch_transport(None, name=name)
1377
2212
location = transport.put_bytes('location', to_branch.base)
1379
def initialize(self, a_bzrdir, target_branch=None):
2214
def initialize(self, a_bzrdir, name=None, target_branch=None,
2215
repository=None, append_revisions_only=None):
1380
2216
"""Create a branch of this format in a_bzrdir."""
1381
2217
if target_branch is None:
1382
2218
# this format does not implement branch itself, thus the implicit
1383
2219
# creation contract must see it as uninitializable
1384
2220
raise errors.UninitializableFormat(self)
1385
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1386
branch_transport = a_bzrdir.get_branch_transport(self)
2221
mutter('creating branch reference in %s', a_bzrdir.user_url)
2222
if a_bzrdir._format.fixed_components:
2223
raise errors.IncompatibleFormat(self, a_bzrdir._format)
2225
name = a_bzrdir._get_selected_branch()
2226
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1387
2227
branch_transport.put_bytes('location',
1388
target_branch.bzrdir.root_transport.base)
1389
branch_transport.put_bytes('format', self.get_format_string())
1391
a_bzrdir, _found=True,
2228
target_branch.user_url)
2229
branch_transport.put_bytes('format', self.as_string())
2230
branch = self.open(a_bzrdir, name, _found=True,
1392
2231
possible_transports=[target_branch.bzrdir.root_transport])
1395
super(BranchReferenceFormat, self).__init__()
1396
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2232
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1398
2235
def _make_reference_clone_function(format, a_branch):
1399
2236
"""Create a clone() routine for a branch dynamically."""
1400
def clone(to_bzrdir, revision_id=None):
2237
def clone(to_bzrdir, revision_id=None,
2238
repository_policy=None):
1401
2239
"""See Branch.clone()."""
1402
return format.initialize(to_bzrdir, a_branch)
2240
return format.initialize(to_bzrdir, target_branch=a_branch)
1403
2241
# cannot obey revision_id limits when cloning a reference ...
1404
2242
# FIXME RBC 20060210 either nuke revision_id for clone, or
1405
2243
# emit some sort of warning/error to the caller ?!
1408
def open(self, a_bzrdir, _found=False, location=None,
1409
possible_transports=None):
2246
def open(self, a_bzrdir, name=None, _found=False, location=None,
2247
possible_transports=None, ignore_fallbacks=False,
2248
found_repository=None):
1410
2249
"""Return the branch that the branch reference in a_bzrdir points at.
1412
_found is a private parameter, do not use it. It is used to indicate
1413
if format probing has already be done.
2251
:param a_bzrdir: A BzrDir that contains a branch.
2252
:param name: Name of colocated branch to open, if any
2253
:param _found: a private parameter, do not use it. It is used to
2254
indicate if format probing has already be done.
2255
:param ignore_fallbacks: when set, no fallback branches will be opened
2256
(if there are any). Default is to open fallbacks.
2257
:param location: The location of the referenced branch. If
2258
unspecified, this will be determined from the branch reference in
2260
:param possible_transports: An optional reusable transports list.
2263
name = a_bzrdir._get_selected_branch()
1416
format = BranchFormat.find_format(a_bzrdir)
2265
format = BranchFormatMetadir.find_format(a_bzrdir, name=name)
1417
2266
if format.__class__ != self.__class__:
1418
2267
raise AssertionError("wrong format %r found for %r" %
1419
2268
(format, self))
1420
2269
if location is None:
1421
location = self.get_reference(a_bzrdir)
1422
real_bzrdir = bzrdir.BzrDir.open(
2270
location = self.get_reference(a_bzrdir, name)
2271
real_bzrdir = controldir.ControlDir.open(
1423
2272
location, possible_transports=possible_transports)
1424
result = real_bzrdir.open_branch()
2273
result = real_bzrdir.open_branch(ignore_fallbacks=ignore_fallbacks,
2274
possible_transports=possible_transports)
1425
2275
# this changes the behaviour of result.clone to create a new reference
1426
2276
# rather than a copy of the content of the branch.
1427
2277
# I did not use a proxy object because that needs much more extensive
2287
class BranchFormatRegistry(controldir.ControlComponentFormatRegistry):
2288
"""Branch format registry."""
2290
def __init__(self, other_registry=None):
2291
super(BranchFormatRegistry, self).__init__(other_registry)
2292
self._default_format = None
2294
def set_default(self, format):
2295
self._default_format = format
2297
def get_default(self):
2298
return self._default_format
2301
network_format_registry = registry.FormatRegistry()
2302
"""Registry of formats indexed by their network name.
2304
The network name for a branch format is an identifier that can be used when
2305
referring to formats with smart server operations. See
2306
BranchFormat.network_name() for more detail.
2309
format_registry = BranchFormatRegistry(network_format_registry)
1437
2312
# formats which have no format string are not discoverable
1438
2313
# and not independently creatable, so are not registered.
1439
__format5 = BzrBranchFormat5()
1440
2314
__format6 = BzrBranchFormat6()
1441
2315
__format7 = BzrBranchFormat7()
1442
BranchFormat.register_format(__format5)
1443
BranchFormat.register_format(BranchReferenceFormat())
1444
BranchFormat.register_format(__format6)
1445
BranchFormat.register_format(__format7)
1446
BranchFormat.set_default_format(__format6)
1447
_legacy_formats = [BzrBranchFormat4(),
1450
class BzrBranch(Branch):
2316
__format8 = BzrBranchFormat8()
2317
format_registry.register_lazy(
2318
"Bazaar-NG branch format 5\n", "bzrlib.branchfmt.fullhistory", "BzrBranchFormat5")
2319
format_registry.register(BranchReferenceFormat())
2320
format_registry.register(__format6)
2321
format_registry.register(__format7)
2322
format_registry.register(__format8)
2323
format_registry.set_default(__format7)
2326
class BranchWriteLockResult(LogicalLockResult):
2327
"""The result of write locking a branch.
2329
:ivar branch_token: The token obtained from the underlying branch lock, or
2331
:ivar unlock: A callable which will unlock the lock.
2334
def __init__(self, unlock, branch_token):
2335
LogicalLockResult.__init__(self, unlock)
2336
self.branch_token = branch_token
2339
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2343
class BzrBranch(Branch, _RelockDebugMixin):
1451
2344
"""A branch stored in the actual filesystem.
1453
2346
Note that it's "local" in the context of the filesystem; it doesn't
1454
2347
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1455
2348
it's writable, and can be accessed via the normal filesystem API.
1457
:ivar _transport: Transport for file operations on this branch's
2350
:ivar _transport: Transport for file operations on this branch's
1458
2351
control files, typically pointing to the .bzr/branch directory.
1459
2352
:ivar repository: Repository for this branch.
1460
:ivar base: The url of the base directory for this branch; the one
2353
:ivar base: The url of the base directory for this branch; the one
1461
2354
containing the .bzr directory.
2355
:ivar name: Optional colocated branch name as it exists in the control
1464
2359
def __init__(self, _format=None,
1465
_control_files=None, a_bzrdir=None, _repository=None):
2360
_control_files=None, a_bzrdir=None, name=None,
2361
_repository=None, ignore_fallbacks=False,
2362
possible_transports=None):
1466
2363
"""Create new branch object at a particular location."""
1467
2364
if a_bzrdir is None:
1468
2365
raise ValueError('a_bzrdir must be supplied')
1470
self.bzrdir = a_bzrdir
1471
self._base = self.bzrdir.transport.clone('..').base
1472
# XXX: We should be able to just do
1473
# self.base = self.bzrdir.root_transport.base
1474
# but this does not quite work yet -- mbp 20080522
2367
raise ValueError('name must be supplied')
2368
self.bzrdir = a_bzrdir
2369
self._user_transport = self.bzrdir.transport.clone('..')
2371
self._user_transport.set_segment_parameter(
2372
"branch", urlutils.escape(name))
2373
self._base = self._user_transport.base
1475
2375
self._format = _format
1476
2376
if _control_files is None:
1477
2377
raise ValueError('BzrBranch _control_files is None')
1478
2378
self.control_files = _control_files
1479
2379
self._transport = _control_files._transport
1480
2380
self.repository = _repository
1481
Branch.__init__(self)
2381
self.conf_store = None
2382
Branch.__init__(self, possible_transports)
1483
2384
def __str__(self):
1484
return '%s(%r)' % (self.__class__.__name__, self.base)
2385
return '%s(%s)' % (self.__class__.__name__, self.user_url)
1486
2387
__repr__ = __str__
1492
2393
base = property(_get_base, doc="The URL for the root of this branch.")
2396
def user_transport(self):
2397
return self._user_transport
2399
def _get_config(self):
2400
return _mod_config.TransportConfig(self._transport, 'branch.conf')
2402
def _get_config_store(self):
2403
if self.conf_store is None:
2404
self.conf_store = _mod_config.BranchStore(self)
2405
return self.conf_store
2407
def _uncommitted_branch(self):
2408
"""Return the branch that may contain uncommitted changes."""
2409
master = self.get_master_branch()
2410
if master is not None:
2415
def store_uncommitted(self, creator):
2416
"""Store uncommitted changes from a ShelfCreator.
2418
:param creator: The ShelfCreator containing uncommitted changes, or
2419
None to delete any stored changes.
2420
:raises: ChangesAlreadyStored if the branch already has changes.
2422
branch = self._uncommitted_branch()
2424
branch._transport.delete('stored-transform')
2426
if branch._transport.has('stored-transform'):
2427
raise errors.ChangesAlreadyStored
2428
transform = StringIO()
2429
creator.write_shelf(transform)
2431
branch._transport.put_file('stored-transform', transform)
2433
def get_unshelver(self, tree):
2434
"""Return a shelf.Unshelver for this branch and tree.
2436
:param tree: The tree to use to construct the Unshelver.
2437
:return: an Unshelver or None if no changes are stored.
2439
branch = self._uncommitted_branch()
2441
transform = branch._transport.get('stored-transform')
2442
except errors.NoSuchFile:
2444
return shelf.Unshelver.from_tree_and_shelf(tree, transform)
1494
2446
def is_locked(self):
1495
2447
return self.control_files.is_locked()
1497
2449
def lock_write(self, token=None):
1498
repo_token = self.repository.lock_write()
2450
"""Lock the branch for write operations.
2452
:param token: A token to permit reacquiring a previously held and
2454
:return: A BranchWriteLockResult.
2456
if not self.is_locked():
2457
self._note_lock('w')
2458
self.repository._warn_if_deprecated(self)
2459
self.repository.lock_write()
1500
token = self.control_files.lock_write(token=token)
2464
return BranchWriteLockResult(self.unlock,
2465
self.control_files.lock_write(token=token))
1502
self.repository.unlock()
2468
self.repository.unlock()
1506
2471
def lock_read(self):
1507
self.repository.lock_read()
2472
"""Lock the branch for read operations.
2474
:return: A bzrlib.lock.LogicalLockResult.
2476
if not self.is_locked():
2477
self._note_lock('r')
2478
self.repository._warn_if_deprecated(self)
2479
self.repository.lock_read()
1509
2484
self.control_files.lock_read()
2485
return LogicalLockResult(self.unlock)
1511
self.repository.unlock()
2488
self.repository.unlock()
2491
@only_raises(errors.LockNotHeld, errors.LockBroken)
1514
2492
def unlock(self):
1515
# TODO: test for failed two phase locks. This is known broken.
2493
if self.control_files._lock_count == 1 and self.conf_store is not None:
2494
self.conf_store.save_changes()
1517
2496
self.control_files.unlock()
1519
self.repository.unlock()
1520
if not self.control_files.is_locked():
1521
# we just released the lock
1522
self._clear_cached_state()
2498
if not self.control_files.is_locked():
2499
self.repository.unlock()
2500
# we just released the lock
2501
self._clear_cached_state()
1524
2503
def peek_lock_mode(self):
1525
2504
if self.control_files._lock_count == 0:
1535
2514
"""See Branch.print_file."""
1536
2515
return self.repository.print_file(file, revision_id)
1538
def _write_revision_history(self, history):
1539
"""Factored out of set_revision_history.
1541
This performs the actual writing to disk.
1542
It is intended to be called by BzrBranch5.set_revision_history."""
1543
self._transport.put_bytes(
1544
'revision-history', '\n'.join(history),
1545
mode=self.bzrdir._get_file_mode())
1548
def set_revision_history(self, rev_history):
1549
"""See Branch.set_revision_history."""
1550
if 'evil' in debug.debug_flags:
1551
mutter_callsite(3, "set_revision_history scales with history.")
1552
check_not_reserved_id = _mod_revision.check_not_reserved_id
1553
for rev_id in rev_history:
1554
check_not_reserved_id(rev_id)
1555
if Branch.hooks['post_change_branch_tip']:
1556
# Don't calculate the last_revision_info() if there are no hooks
1558
old_revno, old_revid = self.last_revision_info()
1559
if len(rev_history) == 0:
1560
revid = _mod_revision.NULL_REVISION
1562
revid = rev_history[-1]
1563
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
1564
self._write_revision_history(rev_history)
1565
self._clear_cached_state()
1566
self._cache_revision_history(rev_history)
1567
for hook in Branch.hooks['set_rh']:
1568
hook(self, rev_history)
1569
if Branch.hooks['post_change_branch_tip']:
1570
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
1572
def _run_pre_change_branch_tip_hooks(self, new_revno, new_revid):
1573
"""Run the pre_change_branch_tip hooks."""
1574
hooks = Branch.hooks['pre_change_branch_tip']
1577
old_revno, old_revid = self.last_revision_info()
1578
params = ChangeBranchTipParams(
1579
self, old_revno, new_revno, old_revid, new_revid)
1583
except errors.TipChangeRejected:
1586
exc_info = sys.exc_info()
1587
hook_name = Branch.hooks.get_hook_name(hook)
1588
raise errors.HookFailed(
1589
'pre_change_branch_tip', hook_name, exc_info)
1591
def _run_post_change_branch_tip_hooks(self, old_revno, old_revid):
1592
"""Run the post_change_branch_tip hooks."""
1593
hooks = Branch.hooks['post_change_branch_tip']
1596
new_revno, new_revid = self.last_revision_info()
1597
params = ChangeBranchTipParams(
1598
self, old_revno, new_revno, old_revid, new_revid)
1602
2517
@needs_write_lock
1603
2518
def set_last_revision_info(self, revno, revision_id):
1604
"""Set the last revision of this branch.
1606
The caller is responsible for checking that the revno is correct
1607
for this revision id.
1609
It may be possible to set the branch last revision to an id not
1610
present in the repository. However, branches can also be
1611
configured to check constraints on history, in which case this may not
2519
if not revision_id or not isinstance(revision_id, basestring):
2520
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
1614
2521
revision_id = _mod_revision.ensure_null(revision_id)
1615
# this old format stores the full history, but this api doesn't
1616
# provide it, so we must generate, and might as well check it's
1618
history = self._lefthand_history(revision_id)
1619
if len(history) != revno:
1620
raise AssertionError('%d != %d' % (len(history), revno))
1621
self.set_revision_history(history)
1623
def _gen_revision_history(self):
1624
history = self._transport.get_bytes('revision-history').split('\n')
1625
if history[-1:] == ['']:
1626
# There shouldn't be a trailing newline, but just in case.
1630
def _lefthand_history(self, revision_id, last_rev=None,
1632
if 'evil' in debug.debug_flags:
1633
mutter_callsite(4, "_lefthand_history scales with history.")
1634
# stop_revision must be a descendant of last_revision
1635
graph = self.repository.get_graph()
1636
if last_rev is not None:
1637
if not graph.is_ancestor(last_rev, revision_id):
1638
# our previous tip is not merged into stop_revision
1639
raise errors.DivergedBranches(self, other_branch)
1640
# make a new revision history from the graph
1641
parents_map = graph.get_parent_map([revision_id])
1642
if revision_id not in parents_map:
1643
raise errors.NoSuchRevision(self, revision_id)
1644
current_rev_id = revision_id
1646
check_not_reserved_id = _mod_revision.check_not_reserved_id
1647
# Do not include ghosts or graph origin in revision_history
1648
while (current_rev_id in parents_map and
1649
len(parents_map[current_rev_id]) > 0):
1650
check_not_reserved_id(current_rev_id)
1651
new_history.append(current_rev_id)
1652
current_rev_id = parents_map[current_rev_id][0]
1653
parents_map = graph.get_parent_map([current_rev_id])
1654
new_history.reverse()
1658
def generate_revision_history(self, revision_id, last_rev=None,
1660
"""Create a new revision history that will finish with revision_id.
1662
:param revision_id: the new tip to use.
1663
:param last_rev: The previous last_revision. If not None, then this
1664
must be a ancestory of revision_id, or DivergedBranches is raised.
1665
:param other_branch: The other branch that DivergedBranches should
1666
raise with respect to.
1668
self.set_revision_history(self._lefthand_history(revision_id,
1669
last_rev, other_branch))
2522
old_revno, old_revid = self.last_revision_info()
2523
if self.get_append_revisions_only():
2524
self._check_history_violation(revision_id)
2525
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2526
self._write_last_revision_info(revno, revision_id)
2527
self._clear_cached_state()
2528
self._last_revision_info_cache = revno, revision_id
2529
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
1671
2531
def basis_tree(self):
1672
2532
"""See Branch.basis_tree."""
1673
2533
return self.repository.revision_tree(self.last_revision())
1676
def pull(self, source, overwrite=False, stop_revision=None,
1677
_hook_master=None, run_hooks=True, possible_transports=None,
1678
_override_hook_target=None):
1681
:param _hook_master: Private parameter - set the branch to
1682
be supplied as the master to pull hooks.
1683
:param run_hooks: Private parameter - if false, this branch
1684
is being called because it's the master of the primary branch,
1685
so it should not run its hooks.
1686
:param _override_hook_target: Private parameter - set the branch to be
1687
supplied as the target_branch to pull hooks.
1689
result = PullResult()
1690
result.source_branch = source
1691
if _override_hook_target is None:
1692
result.target_branch = self
1694
result.target_branch = _override_hook_target
1697
# We assume that during 'pull' the local repository is closer than
1699
graph = self.repository.get_graph(source.repository)
1700
result.old_revno, result.old_revid = self.last_revision_info()
1701
self.update_revisions(source, stop_revision, overwrite=overwrite,
1703
result.tag_conflicts = source.tags.merge_to(self.tags, overwrite)
1704
result.new_revno, result.new_revid = self.last_revision_info()
1706
result.master_branch = _hook_master
1707
result.local_branch = result.target_branch
1709
result.master_branch = result.target_branch
1710
result.local_branch = None
1712
for hook in Branch.hooks['post_pull']:
1718
2535
def _get_parent_location(self):
1719
2536
_locs = ['parent', 'pull', 'x-pull']
1720
2537
for l in _locs:
1728
def push(self, target, overwrite=False, stop_revision=None,
1729
_override_hook_source_branch=None):
1732
This is the basic concrete implementation of push()
1734
:param _override_hook_source_branch: If specified, run
1735
the hooks passing this Branch as the source, rather than self.
1736
This is for use of RemoteBranch, where push is delegated to the
1737
underlying vfs-based Branch.
1739
# TODO: Public option to disable running hooks - should be trivial but
1743
result = self._push_with_bound_branches(target, overwrite,
1745
_override_hook_source_branch=_override_hook_source_branch)
1750
def _push_with_bound_branches(self, target, overwrite,
1752
_override_hook_source_branch=None):
1753
"""Push from self into target, and into target's master if any.
1755
This is on the base BzrBranch class even though it doesn't support
1756
bound branches because the *target* might be bound.
1759
if _override_hook_source_branch:
1760
result.source_branch = _override_hook_source_branch
1761
for hook in Branch.hooks['post_push']:
1764
bound_location = target.get_bound_location()
1765
if bound_location and target.base != bound_location:
1766
# there is a master branch.
1768
# XXX: Why the second check? Is it even supported for a branch to
1769
# be bound to itself? -- mbp 20070507
1770
master_branch = target.get_master_branch()
1771
master_branch.lock_write()
1773
# push into the master from this branch.
1774
self._basic_push(master_branch, overwrite, stop_revision)
1775
# and push into the target branch from this. Note that we push from
1776
# this branch again, because its considered the highest bandwidth
1778
result = self._basic_push(target, overwrite, stop_revision)
1779
result.master_branch = master_branch
1780
result.local_branch = target
1784
master_branch.unlock()
1787
result = self._basic_push(target, overwrite, stop_revision)
1788
# TODO: Why set master_branch and local_branch if there's no
1789
# binding? Maybe cleaner to just leave them unset? -- mbp
1791
result.master_branch = target
1792
result.local_branch = None
1796
def _basic_push(self, target, overwrite, stop_revision):
1797
"""Basic implementation of push without bound branches or hooks.
1799
Must be called with self read locked and target write locked.
1801
result = PushResult()
1802
result.source_branch = self
1803
result.target_branch = target
1804
result.old_revno, result.old_revid = target.last_revision_info()
1806
# We assume that during 'push' this repository is closer than
1808
graph = self.repository.get_graph(target.repository)
1809
target.update_revisions(self, stop_revision, overwrite=overwrite,
1811
result.tag_conflicts = self.tags.merge_to(target.tags, overwrite)
1812
result.new_revno, result.new_revid = target.last_revision_info()
1815
def get_parent(self):
1816
"""See Branch.get_parent."""
1817
parent = self._get_parent_location()
1820
# This is an old-format absolute path to a local branch
1821
# turn it into a url
1822
if parent.startswith('/'):
1823
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1825
return urlutils.join(self.base[:-1], parent)
1826
except errors.InvalidURLJoin, e:
1827
raise errors.InaccessibleParent(parent, self.base)
1829
2544
def get_stacked_on_url(self):
1830
raise errors.UnstackableBranchFormat(self._format, self.base)
2545
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1832
2547
def set_push_location(self, location):
1833
2548
"""See Branch.set_push_location."""
1860
2557
self._transport.put_bytes('parent', url + '\n',
1861
2558
mode=self.bzrdir._get_file_mode())
1863
def set_stacked_on_url(self, url):
1864
raise errors.UnstackableBranchFormat(self._format, self.base)
1867
class BzrBranch5(BzrBranch):
1868
"""A format 5 branch. This supports new features over plain branches.
1870
It has support for a master_branch which is the data for bound branches.
1874
def pull(self, source, overwrite=False, stop_revision=None,
1875
run_hooks=True, possible_transports=None,
1876
_override_hook_target=None):
1877
"""Pull from source into self, updating my master if any.
1879
:param run_hooks: Private parameter - if false, this branch
1880
is being called because it's the master of the primary branch,
1881
so it should not run its hooks.
1883
bound_location = self.get_bound_location()
1884
master_branch = None
1885
if bound_location and source.base != bound_location:
1886
# not pulling from master, so we need to update master.
1887
master_branch = self.get_master_branch(possible_transports)
1888
master_branch.lock_write()
1891
# pull from source into master.
1892
master_branch.pull(source, overwrite, stop_revision,
1894
return super(BzrBranch5, self).pull(source, overwrite,
1895
stop_revision, _hook_master=master_branch,
1896
run_hooks=run_hooks,
1897
_override_hook_target=_override_hook_target)
1900
master_branch.unlock()
1902
def get_bound_location(self):
1904
return self._transport.get_bytes('bound')[:-1]
1905
except errors.NoSuchFile:
1909
def get_master_branch(self, possible_transports=None):
1910
"""Return the branch we are bound to.
1912
:return: Either a Branch, or None
1914
This could memoise the branch, but if thats done
1915
it must be revalidated on each new lock.
1916
So for now we just don't memoise it.
1917
# RBC 20060304 review this decision.
1919
bound_loc = self.get_bound_location()
1923
return Branch.open(bound_loc,
1924
possible_transports=possible_transports)
1925
except (errors.NotBranchError, errors.ConnectionError), e:
1926
raise errors.BoundBranchConnectionFailure(
1930
def set_bound_location(self, location):
1931
"""Set the target where this branch is bound to.
1933
:param location: URL to the target branch
1936
self._transport.put_bytes('bound', location+'\n',
1937
mode=self.bzrdir._get_file_mode())
1940
self._transport.delete('bound')
1941
except errors.NoSuchFile:
2562
"""If bound, unbind"""
2563
return self.set_bound_location(None)
1945
2565
@needs_write_lock
1946
2566
def bind(self, other):
2050
2670
mode=self.bzrdir._get_file_mode())
2052
2672
@needs_write_lock
2053
def set_last_revision_info(self, revno, revision_id):
2054
revision_id = _mod_revision.ensure_null(revision_id)
2055
old_revno, old_revid = self.last_revision_info()
2056
if self._get_append_revisions_only():
2057
self._check_history_violation(revision_id)
2058
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2059
self._write_last_revision_info(revno, revision_id)
2060
self._clear_cached_state()
2061
self._last_revision_info_cache = revno, revision_id
2062
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2673
def update_feature_flags(self, updated_flags):
2674
"""Update the feature flags for this branch.
2676
:param updated_flags: Dictionary mapping feature names to necessities
2677
A necessity can be None to indicate the feature should be removed
2679
self._format._update_feature_flags(updated_flags)
2680
self.control_transport.put_bytes('format', self._format.as_string())
2683
class BzrBranch8(BzrBranch):
2684
"""A branch that stores tree-reference locations."""
2686
def _open_hook(self, possible_transports=None):
2687
if self._ignore_fallbacks:
2689
if possible_transports is None:
2690
possible_transports = [self.bzrdir.root_transport]
2692
url = self.get_stacked_on_url()
2693
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2694
errors.UnstackableBranchFormat):
2697
for hook in Branch.hooks['transform_fallback_location']:
2698
url = hook(self, url)
2700
hook_name = Branch.hooks.get_hook_name(hook)
2701
raise AssertionError(
2702
"'transform_fallback_location' hook %s returned "
2703
"None, not a URL." % hook_name)
2704
self._activate_fallback_location(url,
2705
possible_transports=possible_transports)
2707
def __init__(self, *args, **kwargs):
2708
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2709
super(BzrBranch8, self).__init__(*args, **kwargs)
2710
self._last_revision_info_cache = None
2711
self._reference_info = None
2713
def _clear_cached_state(self):
2714
super(BzrBranch8, self)._clear_cached_state()
2715
self._last_revision_info_cache = None
2716
self._reference_info = None
2064
2718
def _check_history_violation(self, revision_id):
2065
last_revision = _mod_revision.ensure_null(self.last_revision())
2719
current_revid = self.last_revision()
2720
last_revision = _mod_revision.ensure_null(current_revid)
2066
2721
if _mod_revision.is_null(last_revision):
2068
if last_revision not in self._lefthand_history(revision_id):
2069
raise errors.AppendRevisionsOnlyViolation(self.base)
2723
graph = self.repository.get_graph()
2724
for lh_ancestor in graph.iter_lefthand_ancestry(revision_id):
2725
if lh_ancestor == current_revid:
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2071
2729
def _gen_revision_history(self):
2072
2730
"""Generate the revision history from last revision
2130
2743
"""Set the parent branch"""
2131
2744
return self._get_config_location('parent_location')
2747
def _set_all_reference_info(self, info_dict):
2748
"""Replace all reference info stored in a branch.
2750
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2753
writer = rio.RioWriter(s)
2754
for key, (tree_path, branch_location) in info_dict.iteritems():
2755
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2756
branch_location=branch_location)
2757
writer.write_stanza(stanza)
2758
self._transport.put_bytes('references', s.getvalue())
2759
self._reference_info = info_dict
2762
def _get_all_reference_info(self):
2763
"""Return all the reference info stored in a branch.
2765
:return: A dict of {file_id: (tree_path, branch_location)}
2767
if self._reference_info is not None:
2768
return self._reference_info
2769
rio_file = self._transport.get('references')
2771
stanzas = rio.read_stanzas(rio_file)
2772
info_dict = dict((s['file_id'], (s['tree_path'],
2773
s['branch_location'])) for s in stanzas)
2776
self._reference_info = info_dict
2779
def set_reference_info(self, file_id, tree_path, branch_location):
2780
"""Set the branch location to use for a tree reference.
2782
:param file_id: The file-id of the tree reference.
2783
:param tree_path: The path of the tree reference in the tree.
2784
:param branch_location: The location of the branch to retrieve tree
2787
info_dict = self._get_all_reference_info()
2788
info_dict[file_id] = (tree_path, branch_location)
2789
if None in (tree_path, branch_location):
2790
if tree_path is not None:
2791
raise ValueError('tree_path must be None when branch_location'
2793
if branch_location is not None:
2794
raise ValueError('branch_location must be None when tree_path'
2796
del info_dict[file_id]
2797
self._set_all_reference_info(info_dict)
2799
def get_reference_info(self, file_id):
2800
"""Get the tree_path and branch_location for a tree reference.
2802
:return: a tuple of (tree_path, branch_location)
2804
return self._get_all_reference_info().get(file_id, (None, None))
2806
def reference_parent(self, file_id, path, possible_transports=None):
2807
"""Return the parent branch for a tree-reference file_id.
2809
:param file_id: The file_id of the tree reference
2810
:param path: The path of the file_id in the tree
2811
:return: A branch associated with the file_id
2813
branch_location = self.get_reference_info(file_id)[1]
2814
if branch_location is None:
2815
return Branch.reference_parent(self, file_id, path,
2816
possible_transports)
2817
branch_location = urlutils.join(self.user_url, branch_location)
2818
return Branch.open(branch_location,
2819
possible_transports=possible_transports)
2133
2821
def set_push_location(self, location):
2134
2822
"""See Branch.set_push_location."""
2135
2823
self._set_config_location('push_location', location)
2137
2825
def set_bound_location(self, location):
2138
2826
"""See Branch.set_push_location."""
2827
self._master_branch_cache = None
2140
config = self.get_config()
2829
conf = self.get_config_stack()
2141
2830
if location is None:
2142
if config.get_user_option('bound') != 'True':
2831
if not conf.get('bound'):
2145
config.set_user_option('bound', 'False', warn_masked=True)
2834
conf.set('bound', 'False')
2148
2837
self._set_config_location('bound_location', location,
2150
config.set_user_option('bound', 'True', warn_masked=True)
2839
conf.set('bound', 'True')
2153
2842
def _get_bound_location(self, bound):
2154
2843
"""Return the bound location in the config file.
2156
2845
Return None if the bound parameter does not match"""
2157
config = self.get_config()
2158
config_bound = (config.get_user_option('bound') == 'True')
2159
if config_bound != bound:
2846
conf = self.get_config_stack()
2847
if conf.get('bound') != bound:
2161
return self._get_config_location('bound_location', config=config)
2849
return self._get_config_location('bound_location', config=conf)
2163
2851
def get_bound_location(self):
2164
"""See Branch.set_push_location."""
2852
"""See Branch.get_bound_location."""
2165
2853
return self._get_bound_location(True)
2167
2855
def get_old_bound_location(self):
2169
2857
return self._get_bound_location(False)
2171
2859
def get_stacked_on_url(self):
2172
self._check_stackable_repo()
2173
stacked_url = self._get_config_location('stacked_on_location')
2860
# you can always ask for the URL; but you might not be able to use it
2861
# if the repo can't support stacking.
2862
## self._check_stackable_repo()
2863
# stacked_on_location is only ever defined in branch.conf, so don't
2864
# waste effort reading the whole stack of config files.
2865
conf = _mod_config.BranchOnlyStack(self)
2866
stacked_url = self._get_config_location('stacked_on_location',
2174
2868
if stacked_url is None:
2175
2869
raise errors.NotStacked(self)
2178
def set_append_revisions_only(self, enabled):
2183
self.get_config().set_user_option('append_revisions_only', value,
2186
def set_stacked_on_url(self, url):
2187
self._check_stackable_repo()
2190
old_url = self.get_stacked_on_url()
2191
except (errors.NotStacked, errors.UnstackableBranchFormat,
2192
errors.UnstackableRepositoryFormat):
2195
# repositories don't offer an interface to remove fallback
2196
# repositories today; take the conceptually simpler option and just
2198
self.repository = self.bzrdir.find_repository()
2199
# for every revision reference the branch has, ensure it is pulled
2201
source_repository = self._get_fallback_repository(old_url)
2202
for revision_id in chain([self.last_revision()],
2203
self.tags.get_reverse_tag_dict()):
2204
self.repository.fetch(source_repository, revision_id,
2207
self._activate_fallback_location(url)
2208
# write this out after the repository is stacked to avoid setting a
2209
# stacked config that doesn't work.
2210
self._set_config_location('stacked_on_location', url)
2212
def _get_append_revisions_only(self):
2213
value = self.get_config().get_user_option('append_revisions_only')
2214
return value == 'True'
2216
def _synchronize_history(self, destination, revision_id):
2217
"""Synchronize last revision and revision history between branches.
2219
This version is most efficient when the destination is also a
2220
BzrBranch6, but works for BzrBranch5, as long as the destination's
2221
repository contains all the lefthand ancestors of the intended
2222
last_revision. If not, set_last_revision_info will fail.
2224
:param destination: The branch to copy the history into
2225
:param revision_id: The revision-id to truncate history at. May
2226
be None to copy complete history.
2228
source_revno, source_revision_id = self.last_revision_info()
2229
if revision_id is None:
2230
revno, revision_id = source_revno, source_revision_id
2231
elif source_revision_id == revision_id:
2232
# we know the revno without needing to walk all of history
2233
revno = source_revno
2235
# To figure out the revno for a random revision, we need to build
2236
# the revision history, and count its length.
2237
# We don't care about the order, just how long it is.
2238
# Alternatively, we could start at the current location, and count
2239
# backwards. But there is no guarantee that we will find it since
2240
# it may be a merged revision.
2241
revno = len(list(self.repository.iter_reverse_revision_history(
2243
destination.set_last_revision_info(revno, revision_id)
2245
def _make_tags(self):
2246
return BasicTags(self)
2249
def generate_revision_history(self, revision_id, last_rev=None,
2251
"""See BzrBranch5.generate_revision_history"""
2252
history = self._lefthand_history(revision_id, last_rev, other_branch)
2253
revno = len(history)
2254
self.set_last_revision_info(revno, revision_id)
2870
return stacked_url.encode('utf-8')
2256
2872
@needs_read_lock
2257
2873
def get_rev_id(self, revno, history=None):
2324
2956
:ivar new_revno: Revision number after pull.
2325
2957
:ivar old_revid: Tip revision id before pull.
2326
2958
:ivar new_revid: Tip revision id after pull.
2327
:ivar source_branch: Source (local) branch object.
2959
:ivar source_branch: Source (local) branch object. (read locked)
2328
2960
:ivar master_branch: Master branch of the target, or the target if no
2330
2962
:ivar local_branch: target branch if there is a Master, else None
2331
:ivar target_branch: Target/destination branch object.
2963
:ivar target_branch: Target/destination branch object. (write locked)
2332
2964
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2965
:ivar tag_updates: A dict with new tags, see BasicTags.merge_to
2336
# DEPRECATED: pull used to return the change in revno
2337
return self.new_revno - self.old_revno
2339
2968
def report(self, to_file):
2969
tag_conflicts = getattr(self, "tag_conflicts", None)
2970
tag_updates = getattr(self, "tag_updates", None)
2340
2971
if not is_quiet():
2341
if self.old_revid == self.new_revid:
2342
to_file.write('No revisions to pull.\n')
2972
if self.old_revid != self.new_revid:
2344
2973
to_file.write('Now on revision %d.\n' % self.new_revno)
2975
to_file.write('%d tag(s) updated.\n' % len(tag_updates))
2976
if self.old_revid == self.new_revid and not tag_updates:
2977
if not tag_conflicts:
2978
to_file.write('No revisions or tags to pull.\n')
2980
to_file.write('No revisions to pull.\n')
2345
2981
self._show_tag_conficts(to_file)
2348
class PushResult(_Result):
2984
class BranchPushResult(_Result):
2349
2985
"""Result of a Branch.push operation.
2351
:ivar old_revno: Revision number before push.
2352
:ivar new_revno: Revision number after push.
2353
:ivar old_revid: Tip revision id before push.
2354
:ivar new_revid: Tip revision id after push.
2355
:ivar source_branch: Source branch object.
2356
:ivar master_branch: Master branch of the target, or None.
2357
:ivar target_branch: Target/destination branch object.
2987
:ivar old_revno: Revision number (eg 10) of the target before push.
2988
:ivar new_revno: Revision number (eg 12) of the target after push.
2989
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2991
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2993
:ivar source_branch: Source branch object that the push was from. This is
2994
read locked, and generally is a local (and thus low latency) branch.
2995
:ivar master_branch: If target is a bound branch, the master branch of
2996
target, or target itself. Always write locked.
2997
:ivar target_branch: The direct Branch where data is being sent (write
2999
:ivar local_branch: If the target is a bound branch this will be the
3000
target, otherwise it will be None.
2361
# DEPRECATED: push used to return the change in revno
2362
return self.new_revno - self.old_revno
2364
3003
def report(self, to_file):
2365
"""Write a human-readable description of the result."""
2366
if self.old_revid == self.new_revid:
2367
to_file.write('No new revisions to push.\n')
2369
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
3004
# TODO: This function gets passed a to_file, but then
3005
# ignores it and calls note() instead. This is also
3006
# inconsistent with PullResult(), which writes to stdout.
3007
# -- JRV20110901, bug #838853
3008
tag_conflicts = getattr(self, "tag_conflicts", None)
3009
tag_updates = getattr(self, "tag_updates", None)
3011
if self.old_revid != self.new_revid:
3012
note(gettext('Pushed up to revision %d.') % self.new_revno)
3014
note(ngettext('%d tag updated.', '%d tags updated.', len(tag_updates)) % len(tag_updates))
3015
if self.old_revid == self.new_revid and not tag_updates:
3016
if not tag_conflicts:
3017
note(gettext('No new revisions or tags to push.'))
3019
note(gettext('No new revisions to push.'))
2370
3020
self._show_tag_conficts(to_file)
2428
3088
format = BzrBranchFormat7()
2429
3089
branch._set_config_location('stacked_on_location', '')
2430
3090
# update target format
2431
branch._transport.put_bytes('format', format.get_format_string())
3091
branch._transport.put_bytes('format', format.as_string())
3094
class Converter7to8(object):
3095
"""Perform an in-place upgrade of format 7 to format 8"""
3097
def convert(self, branch):
3098
format = BzrBranchFormat8()
3099
branch._transport.put_bytes('references', '')
3100
# update target format
3101
branch._transport.put_bytes('format', format.as_string())
3104
class InterBranch(InterObject):
3105
"""This class represents operations taking place between two branches.
3107
Its instances have methods like pull() and push() and contain
3108
references to the source and target repositories these operations
3109
can be carried out on.
3113
"""The available optimised InterBranch types."""
3116
def _get_branch_formats_to_test(klass):
3117
"""Return an iterable of format tuples for testing.
3119
:return: An iterable of (from_format, to_format) to use when testing
3120
this InterBranch class. Each InterBranch class should define this
3123
raise NotImplementedError(klass._get_branch_formats_to_test)
3126
def pull(self, overwrite=False, stop_revision=None,
3127
possible_transports=None, local=False):
3128
"""Mirror source into target branch.
3130
The target branch is considered to be 'local', having low latency.
3132
:returns: PullResult instance
3134
raise NotImplementedError(self.pull)
3137
def push(self, overwrite=False, stop_revision=None, lossy=False,
3138
_override_hook_source_branch=None):
3139
"""Mirror the source branch into the target branch.
3141
The source branch is considered to be 'local', having low latency.
3143
raise NotImplementedError(self.push)
3146
def copy_content_into(self, revision_id=None):
3147
"""Copy the content of source into target
3149
revision_id: if not None, the revision history in the new branch will
3150
be truncated to end with revision_id.
3152
raise NotImplementedError(self.copy_content_into)
3155
def fetch(self, stop_revision=None, limit=None):
3158
:param stop_revision: Last revision to fetch
3159
:param limit: Optional rough limit of revisions to fetch
3161
raise NotImplementedError(self.fetch)
3164
def _fix_overwrite_type(overwrite):
3165
if isinstance(overwrite, bool):
3167
return ["history", "tags"]
3173
class GenericInterBranch(InterBranch):
3174
"""InterBranch implementation that uses public Branch functions."""
3177
def is_compatible(klass, source, target):
3178
# GenericBranch uses the public API, so always compatible
3182
def _get_branch_formats_to_test(klass):
3183
return [(format_registry.get_default(), format_registry.get_default())]
3186
def unwrap_format(klass, format):
3187
if isinstance(format, remote.RemoteBranchFormat):
3188
format._ensure_real()
3189
return format._custom_format
3193
def copy_content_into(self, revision_id=None):
3194
"""Copy the content of source into target
3196
revision_id: if not None, the revision history in the new branch will
3197
be truncated to end with revision_id.
3199
self.source.update_references(self.target)
3200
self.source._synchronize_history(self.target, revision_id)
3202
parent = self.source.get_parent()
3203
except errors.InaccessibleParent, e:
3204
mutter('parent was not accessible to copy: %s', e)
3207
self.target.set_parent(parent)
3208
if self.source._push_should_merge_tags():
3209
self.source.tags.merge_to(self.target.tags)
3212
def fetch(self, stop_revision=None, limit=None):
3213
if self.target.base == self.source.base:
3215
self.source.lock_read()
3217
fetch_spec_factory = fetch.FetchSpecFactory()
3218
fetch_spec_factory.source_branch = self.source
3219
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3220
fetch_spec_factory.source_repo = self.source.repository
3221
fetch_spec_factory.target_repo = self.target.repository
3222
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3223
fetch_spec_factory.limit = limit
3224
fetch_spec = fetch_spec_factory.make_fetch_spec()
3225
return self.target.repository.fetch(self.source.repository,
3226
fetch_spec=fetch_spec)
3228
self.source.unlock()
3231
def _update_revisions(self, stop_revision=None, overwrite=False,
3233
other_revno, other_last_revision = self.source.last_revision_info()
3234
stop_revno = None # unknown
3235
if stop_revision is None:
3236
stop_revision = other_last_revision
3237
if _mod_revision.is_null(stop_revision):
3238
# if there are no commits, we're done.
3240
stop_revno = other_revno
3242
# what's the current last revision, before we fetch [and change it
3244
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3245
# we fetch here so that we don't process data twice in the common
3246
# case of having something to pull, and so that the check for
3247
# already merged can operate on the just fetched graph, which will
3248
# be cached in memory.
3249
self.fetch(stop_revision=stop_revision)
3250
# Check to see if one is an ancestor of the other
3253
graph = self.target.repository.get_graph()
3254
if self.target._check_if_descendant_or_diverged(
3255
stop_revision, last_rev, graph, self.source):
3256
# stop_revision is a descendant of last_rev, but we aren't
3257
# overwriting, so we're done.
3259
if stop_revno is None:
3261
graph = self.target.repository.get_graph()
3262
this_revno, this_last_revision = \
3263
self.target.last_revision_info()
3264
stop_revno = graph.find_distance_to_null(stop_revision,
3265
[(other_last_revision, other_revno),
3266
(this_last_revision, this_revno)])
3267
self.target.set_last_revision_info(stop_revno, stop_revision)
3270
def pull(self, overwrite=False, stop_revision=None,
3271
possible_transports=None, run_hooks=True,
3272
_override_hook_target=None, local=False):
3273
"""Pull from source into self, updating my master if any.
3275
:param run_hooks: Private parameter - if false, this branch
3276
is being called because it's the master of the primary branch,
3277
so it should not run its hooks.
3279
bound_location = self.target.get_bound_location()
3280
if local and not bound_location:
3281
raise errors.LocalRequiresBoundBranch()
3282
master_branch = None
3283
source_is_master = False
3285
# bound_location comes from a config file, some care has to be
3286
# taken to relate it to source.user_url
3287
normalized = urlutils.normalize_url(bound_location)
3289
relpath = self.source.user_transport.relpath(normalized)
3290
source_is_master = (relpath == '')
3291
except (errors.PathNotChild, errors.InvalidURL):
3292
source_is_master = False
3293
if not local and bound_location and not source_is_master:
3294
# not pulling from master, so we need to update master.
3295
master_branch = self.target.get_master_branch(possible_transports)
3296
master_branch.lock_write()
3299
# pull from source into master.
3300
master_branch.pull(self.source, overwrite, stop_revision,
3302
return self._pull(overwrite,
3303
stop_revision, _hook_master=master_branch,
3304
run_hooks=run_hooks,
3305
_override_hook_target=_override_hook_target,
3306
merge_tags_to_master=not source_is_master)
3309
master_branch.unlock()
3311
def push(self, overwrite=False, stop_revision=None, lossy=False,
3312
_override_hook_source_branch=None):
3313
"""See InterBranch.push.
3315
This is the basic concrete implementation of push()
3317
:param _override_hook_source_branch: If specified, run the hooks
3318
passing this Branch as the source, rather than self. This is for
3319
use of RemoteBranch, where push is delegated to the underlying
3323
raise errors.LossyPushToSameVCS(self.source, self.target)
3324
# TODO: Public option to disable running hooks - should be trivial but
3327
op = cleanup.OperationWithCleanups(self._push_with_bound_branches)
3328
op.add_cleanup(self.source.lock_read().unlock)
3329
op.add_cleanup(self.target.lock_write().unlock)
3330
return op.run(overwrite, stop_revision,
3331
_override_hook_source_branch=_override_hook_source_branch)
3333
def _basic_push(self, overwrite, stop_revision):
3334
"""Basic implementation of push without bound branches or hooks.
3336
Must be called with source read locked and target write locked.
3338
result = BranchPushResult()
3339
result.source_branch = self.source
3340
result.target_branch = self.target
3341
result.old_revno, result.old_revid = self.target.last_revision_info()
3342
self.source.update_references(self.target)
3343
overwrite = _fix_overwrite_type(overwrite)
3344
if result.old_revid != stop_revision:
3345
# We assume that during 'push' this repository is closer than
3347
graph = self.source.repository.get_graph(self.target.repository)
3348
self._update_revisions(stop_revision,
3349
overwrite=("history" in overwrite),
3351
if self.source._push_should_merge_tags():
3352
result.tag_updates, result.tag_conflicts = (
3353
self.source.tags.merge_to(
3354
self.target.tags, "tags" in overwrite))
3355
result.new_revno, result.new_revid = self.target.last_revision_info()
3358
def _push_with_bound_branches(self, operation, overwrite, stop_revision,
3359
_override_hook_source_branch=None):
3360
"""Push from source into target, and into target's master if any.
3363
if _override_hook_source_branch:
3364
result.source_branch = _override_hook_source_branch
3365
for hook in Branch.hooks['post_push']:
3368
bound_location = self.target.get_bound_location()
3369
if bound_location and self.target.base != bound_location:
3370
# there is a master branch.
3372
# XXX: Why the second check? Is it even supported for a branch to
3373
# be bound to itself? -- mbp 20070507
3374
master_branch = self.target.get_master_branch()
3375
master_branch.lock_write()
3376
operation.add_cleanup(master_branch.unlock)
3377
# push into the master from the source branch.
3378
master_inter = InterBranch.get(self.source, master_branch)
3379
master_inter._basic_push(overwrite, stop_revision)
3380
# and push into the target branch from the source. Note that
3381
# we push from the source branch again, because it's considered
3382
# the highest bandwidth repository.
3383
result = self._basic_push(overwrite, stop_revision)
3384
result.master_branch = master_branch
3385
result.local_branch = self.target
3387
master_branch = None
3389
result = self._basic_push(overwrite, stop_revision)
3390
# TODO: Why set master_branch and local_branch if there's no
3391
# binding? Maybe cleaner to just leave them unset? -- mbp
3393
result.master_branch = self.target
3394
result.local_branch = None
3398
def _pull(self, overwrite=False, stop_revision=None,
3399
possible_transports=None, _hook_master=None, run_hooks=True,
3400
_override_hook_target=None, local=False,
3401
merge_tags_to_master=True):
3404
This function is the core worker, used by GenericInterBranch.pull to
3405
avoid duplication when pulling source->master and source->local.
3407
:param _hook_master: Private parameter - set the branch to
3408
be supplied as the master to pull hooks.
3409
:param run_hooks: Private parameter - if false, this branch
3410
is being called because it's the master of the primary branch,
3411
so it should not run its hooks.
3412
is being called because it's the master of the primary branch,
3413
so it should not run its hooks.
3414
:param _override_hook_target: Private parameter - set the branch to be
3415
supplied as the target_branch to pull hooks.
3416
:param local: Only update the local branch, and not the bound branch.
3418
# This type of branch can't be bound.
3420
raise errors.LocalRequiresBoundBranch()
3421
result = PullResult()
3422
result.source_branch = self.source
3423
if _override_hook_target is None:
3424
result.target_branch = self.target
3426
result.target_branch = _override_hook_target
3427
self.source.lock_read()
3429
# We assume that during 'pull' the target repository is closer than
3431
self.source.update_references(self.target)
3432
graph = self.target.repository.get_graph(self.source.repository)
3433
# TODO: Branch formats should have a flag that indicates
3434
# that revno's are expensive, and pull() should honor that flag.
3436
result.old_revno, result.old_revid = \
3437
self.target.last_revision_info()
3438
overwrite = _fix_overwrite_type(overwrite)
3439
self._update_revisions(stop_revision,
3440
overwrite=("history" in overwrite),
3442
# TODO: The old revid should be specified when merging tags,
3443
# so a tags implementation that versions tags can only
3444
# pull in the most recent changes. -- JRV20090506
3445
result.tag_updates, result.tag_conflicts = (
3446
self.source.tags.merge_to(self.target.tags,
3447
"tags" in overwrite,
3448
ignore_master=not merge_tags_to_master))
3449
result.new_revno, result.new_revid = self.target.last_revision_info()
3451
result.master_branch = _hook_master
3452
result.local_branch = result.target_branch
3454
result.master_branch = result.target_branch
3455
result.local_branch = None
3457
for hook in Branch.hooks['post_pull']:
3460
self.source.unlock()
3464
InterBranch.register_optimiser(GenericInterBranch)
added
removed
bzrlib/branch.py
