782
879
old_repository = self.repository
783
880
if len(old_repository._fallback_repositories) != 1:
784
881
raise AssertionError("can't cope with fallback repositories "
785
"of %r" % (self.repository,))
786
# unlock it, including unlocking the fallback
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()
787
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.
788
933
old_repository.lock_read()
790
# Repositories don't offer an interface to remove fallback
791
# repositories today; take the conceptually simpler option and just
792
# reopen it. We reopen it starting from the URL so that we
793
# get a separate connection for RemoteRepositories and can
794
# stream from one of them to the other. This does mean doing
795
# separate SSH connection setup, but unstacking is not a
796
# common operation so it's tolerable.
797
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
798
new_repository = new_bzrdir.find_repository()
799
self.repository = new_repository
800
if self.repository._fallback_repositories:
801
raise AssertionError("didn't expect %r to have "
802
"fallback_repositories"
803
% (self.repository,))
804
# this is not paired with an unlock because it's just restoring
805
# the previous state; the lock's released when set_stacked_on_url
807
self.repository.lock_write()
808
935
# XXX: If you unstack a branch while it has a working tree
809
936
# with a pending merge, the pending-merged revisions will no
810
937
# longer be present. You can (probably) revert and remerge.
812
# XXX: This only fetches up to the tip of the repository; it
813
# doesn't bring across any tags. That's fairly consistent
814
# with how branch works, but perhaps not ideal.
815
self.repository.fetch(old_repository,
816
revision_id=self.last_revision(),
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)
819
947
old_repository.unlock()
917
1056
:return: A tuple (revno, revision_id).
919
1058
if self._last_revision_info_cache is None:
920
self._last_revision_info_cache = self._last_revision_info()
1059
self._last_revision_info_cache = self._read_last_revision_info()
921
1060
return self._last_revision_info_cache
923
def _last_revision_info(self):
924
rh = self.revision_history()
927
return (revno, rh[-1])
929
return (0, _mod_revision.NULL_REVISION)
931
@deprecated_method(deprecated_in((1, 6, 0)))
932
def missing_revisions(self, other, stop_revision=None):
933
"""Return a list of new revisions that would perfectly fit.
935
If self and other have not diverged, return a list of the revisions
936
present in other, but missing from self.
938
self_history = self.revision_history()
939
self_len = len(self_history)
940
other_history = other.revision_history()
941
other_len = len(other_history)
942
common_index = min(self_len, other_len) -1
943
if common_index >= 0 and \
944
self_history[common_index] != other_history[common_index]:
945
raise errors.DivergedBranches(self, other)
947
if stop_revision is None:
948
stop_revision = other_len
950
if stop_revision > other_len:
951
raise errors.NoSuchRevision(self, stop_revision)
952
return other_history[self_len:stop_revision]
955
def update_revisions(self, other, stop_revision=None, overwrite=False,
957
"""Pull in new perfect-fit revisions.
959
:param other: Another Branch to pull from
960
:param stop_revision: Updated until the given revision
961
:param overwrite: Always set the branch pointer, rather than checking
962
to see if it is a proper descendant.
963
:param graph: A Graph object that can be used to query history
964
information. This can be None.
967
return InterBranch.get(other, self).update_revisions(stop_revision,
1062
def _read_last_revision_info(self):
1063
raise NotImplementedError(self._read_last_revision_info)
1065
@deprecated_method(deprecated_in((2, 4, 0)))
970
1066
def import_last_revision_info(self, source_repo, revno, revid):
971
1067
"""Set the last revision info, importing from another repo if necessary.
973
This is used by the bound branch code to upload a revision to
974
the master branch first before updating the tip of the local branch.
976
1069
:param source_repo: Source repository to optionally fetch from
977
1070
:param revno: Revision number of the new tip
978
1071
:param revid: Revision id of the new tip
1505
1603
return not (self == other)
1508
def find_format(klass, a_bzrdir, name=None):
1509
"""Return the format for the branch object in a_bzrdir."""
1511
transport = a_bzrdir.get_branch_transport(None, name=name)
1512
format_string = transport.get_bytes("format")
1513
return klass._formats[format_string]
1514
except errors.NoSuchFile:
1515
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1517
raise errors.UnknownFormatError(format=format_string, kind='branch')
1606
@deprecated_method(deprecated_in((2, 4, 0)))
1520
1607
def get_default_format(klass):
1521
1608
"""Return the current default format."""
1522
return klass._default_format
1524
def get_reference(self, a_bzrdir):
1525
"""Get the target reference of the branch in a_bzrdir.
1609
return format_registry.get_default()
1612
@deprecated_method(deprecated_in((2, 4, 0)))
1613
def get_formats(klass):
1614
"""Get all the known formats.
1616
Warning: This triggers a load of all lazy registered formats: do not
1617
use except when that is desireed.
1619
return format_registry._get_all()
1621
def get_reference(self, controldir, name=None):
1622
"""Get the target reference of the branch in controldir.
1527
1624
format probing must have been completed before calling
1528
1625
this method - it is assumed that the format of the branch
1529
in a_bzrdir is correct.
1626
in controldir is correct.
1531
:param a_bzrdir: The bzrdir to get the branch data from.
1628
:param controldir: The controldir to get the branch data from.
1629
:param name: Name of the colocated branch to fetch
1532
1630
:return: None if the branch is not a reference branch.
1537
def set_reference(self, a_bzrdir, to_branch):
1538
"""Set the target reference of the branch in a_bzrdir.
1635
def set_reference(self, controldir, name, to_branch):
1636
"""Set the target reference of the branch in controldir.
1540
1638
format probing must have been completed before calling
1541
1639
this method - it is assumed that the format of the branch
1542
in a_bzrdir is correct.
1640
in controldir is correct.
1544
:param a_bzrdir: The bzrdir to set the branch reference for.
1642
:param controldir: The controldir to set the branch reference for.
1643
:param name: Name of colocated branch to set, None for default
1545
1644
:param to_branch: branch that the checkout is to reference
1547
1646
raise NotImplementedError(self.set_reference)
1549
def get_format_string(self):
1550
"""Return the ASCII format string that identifies this format."""
1551
raise NotImplementedError(self.get_format_string)
1553
1648
def get_format_description(self):
1554
1649
"""Return the short format description for this format."""
1555
1650
raise NotImplementedError(self.get_format_description)
1557
def _run_post_branch_init_hooks(self, a_bzrdir, name, branch):
1652
def _run_post_branch_init_hooks(self, controldir, name, branch):
1558
1653
hooks = Branch.hooks['post_branch_init']
1561
params = BranchInitHookParams(self, a_bzrdir, name, branch)
1656
params = BranchInitHookParams(self, controldir, name, branch)
1562
1657
for hook in hooks:
1565
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
1566
lock_type='metadir', set_format=True):
1567
"""Initialize a branch in a bzrdir, with specified files
1569
:param a_bzrdir: The bzrdir to initialize the branch in
1570
:param utf8_files: The files to create as a list of
1571
(filename, content) tuples
1572
:param name: Name of colocated branch to create, if any
1573
:param set_format: If True, set the format with
1574
self.get_format_string. (BzrBranch4 has its format set
1576
:return: a branch in this format
1578
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
1579
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1581
'metadir': ('lock', lockdir.LockDir),
1582
'branch4': ('branch-lock', lockable_files.TransportLock),
1584
lock_name, lock_class = lock_map[lock_type]
1585
control_files = lockable_files.LockableFiles(branch_transport,
1586
lock_name, lock_class)
1587
control_files.create_lock()
1589
control_files.lock_write()
1590
except errors.LockContention:
1591
if lock_type != 'branch4':
1597
utf8_files += [('format', self.get_format_string())]
1599
for (filename, content) in utf8_files:
1600
branch_transport.put_bytes(
1602
mode=a_bzrdir._get_file_mode())
1605
control_files.unlock()
1606
branch = self.open(a_bzrdir, name, _found=True)
1607
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1610
def initialize(self, a_bzrdir, name=None):
1611
"""Create a branch of this format in a_bzrdir.
1660
def initialize(self, controldir, name=None, repository=None,
1661
append_revisions_only=None):
1662
"""Create a branch of this format in controldir.
1613
1664
:param name: Name of the colocated branch to create.
1615
1666
raise NotImplementedError(self.initialize)
1731
1827
"basis revision. hooks MUST NOT modify this delta. "
1732
1828
" future_tree is an in-memory tree obtained from "
1733
1829
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1734
"tree.", (0,91), None))
1735
self.create_hook(HookPoint('post_commit',
1831
self.add_hook('post_commit',
1736
1832
"Called in the bzr client after a commit has completed. "
1737
1833
"post_commit is called with (local, master, old_revno, old_revid, "
1738
1834
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1739
"commit to a branch.", (0, 15), None))
1740
self.create_hook(HookPoint('post_uncommit',
1835
"commit to a branch.", (0, 15))
1836
self.add_hook('post_uncommit',
1741
1837
"Called in the bzr client after an uncommit completes. "
1742
1838
"post_uncommit is called with (local, master, old_revno, "
1743
1839
"old_revid, new_revno, new_revid) where local is the local branch "
1744
1840
"or None, master is the target branch, and an empty branch "
1745
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1746
self.create_hook(HookPoint('pre_change_branch_tip',
1841
"receives new_revno of 0, new_revid of None.", (0, 15))
1842
self.add_hook('pre_change_branch_tip',
1747
1843
"Called in bzr client and server before a change to the tip of a "
1748
1844
"branch is made. pre_change_branch_tip is called with a "
1749
1845
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1750
"commit, uncommit will all trigger this hook.", (1, 6), None))
1751
self.create_hook(HookPoint('post_change_branch_tip',
1846
"commit, uncommit will all trigger this hook.", (1, 6))
1847
self.add_hook('post_change_branch_tip',
1752
1848
"Called in bzr client and server after a change to the tip of a "
1753
1849
"branch is made. post_change_branch_tip is called with a "
1754
1850
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1755
"commit, uncommit will all trigger this hook.", (1, 4), None))
1756
self.create_hook(HookPoint('transform_fallback_location',
1851
"commit, uncommit will all trigger this hook.", (1, 4))
1852
self.add_hook('transform_fallback_location',
1757
1853
"Called when a stacked branch is activating its fallback "
1758
1854
"locations. transform_fallback_location is called with (branch, "
1759
1855
"url), and should return a new url. Returning the same url "
1904
1995
self.revision_id)
1907
class BzrBranchFormat4(BranchFormat):
1908
"""Bzr branch format 4.
1911
- a revision-history file.
1912
- a branch-lock lock file [ to be shared with the bzrdir ]
1998
class BranchFormatMetadir(bzrdir.BzrFormat, BranchFormat):
1999
"""Base class for branch formats that live in meta directories.
1915
def get_format_description(self):
1916
"""See BranchFormat.get_format_description()."""
1917
return "Branch format 4"
1919
def initialize(self, a_bzrdir, name=None):
1920
"""Create a branch of this format in a_bzrdir."""
1921
utf8_files = [('revision-history', ''),
1922
('branch-name', ''),
1924
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
1925
lock_type='branch4', set_format=False)
1927
2002
def __init__(self):
1928
super(BzrBranchFormat4, self).__init__()
1929
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1931
def network_name(self):
1932
"""The network name for this format is the control dirs disk label."""
1933
return self._matchingbzrdir.get_format_string()
1935
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1936
"""See BranchFormat.open()."""
1938
# we are being called directly and must probe.
1939
raise NotImplementedError
1940
return BzrBranch(_format=self,
1941
_control_files=a_bzrdir._control_files,
1944
_repository=a_bzrdir.open_repository())
1947
return "Bazaar-NG branch format 4"
1950
class BranchFormatMetadir(BranchFormat):
1951
"""Common logic for meta-dir based branch formats."""
2003
BranchFormat.__init__(self)
2004
bzrdir.BzrFormat.__init__(self)
2007
def find_format(klass, controldir, name=None):
2008
"""Return the format for the branch object in controldir."""
2010
transport = controldir.get_branch_transport(None, name=name)
2011
except errors.NoSuchFile:
2012
raise errors.NotBranchError(path=name, bzrdir=controldir)
2014
format_string = transport.get_bytes("format")
2015
except errors.NoSuchFile:
2016
raise errors.NotBranchError(path=transport.base, bzrdir=controldir)
2017
return klass._find_format(format_registry, 'branch', format_string)
1953
2019
def _branch_class(self):
1954
2020
"""What class to instantiate on open calls."""
1955
2021
raise NotImplementedError(self._branch_class)
1957
def network_name(self):
1958
"""A simple byte string uniquely identifying this format for RPC calls.
1960
Metadir branch formats use their format string.
2023
def _get_initial_config(self, append_revisions_only=None):
2024
if append_revisions_only:
2025
return "append_revisions_only = True\n"
2027
# Avoid writing anything if append_revisions_only is disabled,
2028
# as that is the default.
2031
def _initialize_helper(self, a_bzrdir, utf8_files, name=None,
2033
"""Initialize a branch in a bzrdir, with specified files
2035
:param a_bzrdir: The bzrdir to initialize the branch in
2036
:param utf8_files: The files to create as a list of
2037
(filename, content) tuples
2038
:param name: Name of colocated branch to create, if any
2039
:return: a branch in this format
1962
return self.get_format_string()
2041
mutter('creating branch %r in %s', self, a_bzrdir.user_url)
2042
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
2043
control_files = lockable_files.LockableFiles(branch_transport,
2044
'lock', lockdir.LockDir)
2045
control_files.create_lock()
2046
control_files.lock_write()
2048
utf8_files += [('format', self.as_string())]
2049
for (filename, content) in utf8_files:
2050
branch_transport.put_bytes(
2052
mode=a_bzrdir._get_file_mode())
2054
control_files.unlock()
2055
branch = self.open(a_bzrdir, name, _found=True,
2056
found_repository=repository)
2057
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1964
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
2060
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False,
2061
found_repository=None, possible_transports=None):
1965
2062
"""See BranchFormat.open()."""
1967
format = BranchFormat.find_format(a_bzrdir, name=name)
2064
format = BranchFormatMetadir.find_format(a_bzrdir, name=name)
1968
2065
if format.__class__ != self.__class__:
1969
2066
raise AssertionError("wrong format %r found for %r" %
1970
2067
(format, self))
2157
2285
"""See BranchFormat.get_format_description()."""
2158
2286
return "Checkout reference format 1"
2160
def get_reference(self, a_bzrdir):
2288
def get_reference(self, a_bzrdir, name=None):
2161
2289
"""See BranchFormat.get_reference()."""
2162
transport = a_bzrdir.get_branch_transport(None)
2290
transport = a_bzrdir.get_branch_transport(None, name=name)
2163
2291
return transport.get_bytes('location')
2165
def set_reference(self, a_bzrdir, to_branch):
2293
def set_reference(self, a_bzrdir, name, to_branch):
2166
2294
"""See BranchFormat.set_reference()."""
2167
transport = a_bzrdir.get_branch_transport(None)
2295
transport = a_bzrdir.get_branch_transport(None, name=name)
2168
2296
location = transport.put_bytes('location', to_branch.base)
2170
def initialize(self, a_bzrdir, name=None, target_branch=None):
2298
def initialize(self, a_bzrdir, name=None, target_branch=None,
2299
repository=None, append_revisions_only=None):
2171
2300
"""Create a branch of this format in a_bzrdir."""
2172
2301
if target_branch is None:
2173
2302
# this format does not implement branch itself, thus the implicit
2174
2303
# creation contract must see it as uninitializable
2175
2304
raise errors.UninitializableFormat(self)
2176
2305
mutter('creating branch reference in %s', a_bzrdir.user_url)
2306
if a_bzrdir._format.fixed_components:
2307
raise errors.IncompatibleFormat(self, a_bzrdir._format)
2177
2308
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
2178
2309
branch_transport.put_bytes('location',
2179
target_branch.bzrdir.user_url)
2180
branch_transport.put_bytes('format', self.get_format_string())
2310
target_branch.user_url)
2311
branch_transport.put_bytes('format', self.as_string())
2181
2312
branch = self.open(
2182
2313
a_bzrdir, name, _found=True,
2183
2314
possible_transports=[target_branch.bzrdir.root_transport])
2184
2315
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
2188
super(BranchReferenceFormat, self).__init__()
2189
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2190
self._matchingbzrdir.set_branch_format(self)
2192
2318
def _make_reference_clone_function(format, a_branch):
2193
2319
"""Create a clone() routine for a branch dynamically."""
2194
2320
def clone(to_bzrdir, revision_id=None,
2387
2566
"""See Branch.print_file."""
2388
2567
return self.repository.print_file(file, revision_id)
2390
def _write_revision_history(self, history):
2391
"""Factored out of set_revision_history.
2393
This performs the actual writing to disk.
2394
It is intended to be called by BzrBranch5.set_revision_history."""
2395
self._transport.put_bytes(
2396
'revision-history', '\n'.join(history),
2397
mode=self.bzrdir._get_file_mode())
2400
def set_revision_history(self, rev_history):
2401
"""See Branch.set_revision_history."""
2402
if 'evil' in debug.debug_flags:
2403
mutter_callsite(3, "set_revision_history scales with history.")
2404
check_not_reserved_id = _mod_revision.check_not_reserved_id
2405
for rev_id in rev_history:
2406
check_not_reserved_id(rev_id)
2407
if Branch.hooks['post_change_branch_tip']:
2408
# Don't calculate the last_revision_info() if there are no hooks
2410
old_revno, old_revid = self.last_revision_info()
2411
if len(rev_history) == 0:
2412
revid = _mod_revision.NULL_REVISION
2414
revid = rev_history[-1]
2415
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2416
self._write_revision_history(rev_history)
2417
self._clear_cached_state()
2418
self._cache_revision_history(rev_history)
2419
for hook in Branch.hooks['set_rh']:
2420
hook(self, rev_history)
2421
if Branch.hooks['post_change_branch_tip']:
2422
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2424
def _synchronize_history(self, destination, revision_id):
2425
"""Synchronize last revision and revision history between branches.
2427
This version is most efficient when the destination is also a
2428
BzrBranch5, but works for BzrBranch6 as long as the revision
2429
history is the true lefthand parent history, and all of the revisions
2430
are in the destination's repository. If not, set_revision_history
2433
:param destination: The branch to copy the history into
2434
:param revision_id: The revision-id to truncate history at. May
2435
be None to copy complete history.
2437
if not isinstance(destination._format, BzrBranchFormat5):
2438
super(BzrBranch, self)._synchronize_history(
2439
destination, revision_id)
2441
if revision_id == _mod_revision.NULL_REVISION:
2444
new_history = self.revision_history()
2445
if revision_id is not None and new_history != []:
2447
new_history = new_history[:new_history.index(revision_id) + 1]
2449
rev = self.repository.get_revision(revision_id)
2450
new_history = rev.get_history(self.repository)[1:]
2451
destination.set_revision_history(new_history)
2453
2569
@needs_write_lock
2454
2570
def set_last_revision_info(self, revno, revision_id):
2455
"""Set the last revision of this branch.
2457
The caller is responsible for checking that the revno is correct
2458
for this revision id.
2460
It may be possible to set the branch last revision to an id not
2461
present in the repository. However, branches can also be
2462
configured to check constraints on history, in which case this may not
2571
if not revision_id or not isinstance(revision_id, basestring):
2572
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
2465
2573
revision_id = _mod_revision.ensure_null(revision_id)
2466
# this old format stores the full history, but this api doesn't
2467
# provide it, so we must generate, and might as well check it's
2469
history = self._lefthand_history(revision_id)
2470
if len(history) != revno:
2471
raise AssertionError('%d != %d' % (len(history), revno))
2472
self.set_revision_history(history)
2474
def _gen_revision_history(self):
2475
history = self._transport.get_bytes('revision-history').split('\n')
2476
if history[-1:] == ['']:
2477
# There shouldn't be a trailing newline, but just in case.
2482
def generate_revision_history(self, revision_id, last_rev=None,
2484
"""Create a new revision history that will finish with revision_id.
2486
:param revision_id: the new tip to use.
2487
:param last_rev: The previous last_revision. If not None, then this
2488
must be a ancestory of revision_id, or DivergedBranches is raised.
2489
:param other_branch: The other branch that DivergedBranches should
2490
raise with respect to.
2492
self.set_revision_history(self._lefthand_history(revision_id,
2493
last_rev, other_branch))
2574
old_revno, old_revid = self.last_revision_info()
2575
if self.get_append_revisions_only():
2576
self._check_history_violation(revision_id)
2577
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2578
self._write_last_revision_info(revno, revision_id)
2579
self._clear_cached_state()
2580
self._last_revision_info_cache = revno, revision_id
2581
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2495
2583
def basis_tree(self):
2496
2584
"""See Branch.basis_tree."""
2645
class BzrBranch8(BzrBranch5):
2705
def _read_last_revision_info(self):
2706
revision_string = self._transport.get_bytes('last-revision')
2707
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2708
revision_id = cache_utf8.get_cached_utf8(revision_id)
2710
return revno, revision_id
2712
def _write_last_revision_info(self, revno, revision_id):
2713
"""Simply write out the revision id, with no checks.
2715
Use set_last_revision_info to perform this safely.
2717
Does not update the revision_history cache.
2719
revision_id = _mod_revision.ensure_null(revision_id)
2720
out_string = '%d %s\n' % (revno, revision_id)
2721
self._transport.put_bytes('last-revision', out_string,
2722
mode=self.bzrdir._get_file_mode())
2725
def update_feature_flags(self, updated_flags):
2726
"""Update the feature flags for this branch.
2728
:param updated_flags: Dictionary mapping feature names to necessities
2729
A necessity can be None to indicate the feature should be removed
2731
self._format._update_feature_flags(updated_flags)
2732
self.control_transport.put_bytes('format', self._format.as_string())
2735
class FullHistoryBzrBranch(BzrBranch):
2736
"""Bzr branch which contains the full revision history."""
2739
def set_last_revision_info(self, revno, revision_id):
2740
if not revision_id or not isinstance(revision_id, basestring):
2741
raise errors.InvalidRevisionId(revision_id=revision_id, branch=self)
2742
revision_id = _mod_revision.ensure_null(revision_id)
2743
# this old format stores the full history, but this api doesn't
2744
# provide it, so we must generate, and might as well check it's
2746
history = self._lefthand_history(revision_id)
2747
if len(history) != revno:
2748
raise AssertionError('%d != %d' % (len(history), revno))
2749
self._set_revision_history(history)
2751
def _read_last_revision_info(self):
2752
rh = self._revision_history()
2755
return (revno, rh[-1])
2757
return (0, _mod_revision.NULL_REVISION)
2759
@deprecated_method(deprecated_in((2, 4, 0)))
2761
def set_revision_history(self, rev_history):
2762
"""See Branch.set_revision_history."""
2763
self._set_revision_history(rev_history)
2765
def _set_revision_history(self, rev_history):
2766
if 'evil' in debug.debug_flags:
2767
mutter_callsite(3, "set_revision_history scales with history.")
2768
check_not_reserved_id = _mod_revision.check_not_reserved_id
2769
for rev_id in rev_history:
2770
check_not_reserved_id(rev_id)
2771
if Branch.hooks['post_change_branch_tip']:
2772
# Don't calculate the last_revision_info() if there are no hooks
2774
old_revno, old_revid = self.last_revision_info()
2775
if len(rev_history) == 0:
2776
revid = _mod_revision.NULL_REVISION
2778
revid = rev_history[-1]
2779
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2780
self._write_revision_history(rev_history)
2781
self._clear_cached_state()
2782
self._cache_revision_history(rev_history)
2783
for hook in Branch.hooks['set_rh']:
2784
hook(self, rev_history)
2785
if Branch.hooks['post_change_branch_tip']:
2786
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2788
def _write_revision_history(self, history):
2789
"""Factored out of set_revision_history.
2791
This performs the actual writing to disk.
2792
It is intended to be called by set_revision_history."""
2793
self._transport.put_bytes(
2794
'revision-history', '\n'.join(history),
2795
mode=self.bzrdir._get_file_mode())
2797
def _gen_revision_history(self):
2798
history = self._transport.get_bytes('revision-history').split('\n')
2799
if history[-1:] == ['']:
2800
# There shouldn't be a trailing newline, but just in case.
2804
def _synchronize_history(self, destination, revision_id):
2805
if not isinstance(destination, FullHistoryBzrBranch):
2806
super(BzrBranch, self)._synchronize_history(
2807
destination, revision_id)
2809
if revision_id == _mod_revision.NULL_REVISION:
2812
new_history = self._revision_history()
2813
if revision_id is not None and new_history != []:
2815
new_history = new_history[:new_history.index(revision_id) + 1]
2817
rev = self.repository.get_revision(revision_id)
2818
new_history = rev.get_history(self.repository)[1:]
2819
destination._set_revision_history(new_history)
2822
def generate_revision_history(self, revision_id, last_rev=None,
2824
"""Create a new revision history that will finish with revision_id.
2826
:param revision_id: the new tip to use.
2827
:param last_rev: The previous last_revision. If not None, then this
2828
must be a ancestory of revision_id, or DivergedBranches is raised.
2829
:param other_branch: The other branch that DivergedBranches should
2830
raise with respect to.
2832
self._set_revision_history(self._lefthand_history(revision_id,
2833
last_rev, other_branch))
2836
class BzrBranch5(FullHistoryBzrBranch):
2837
"""A format 5 branch. This supports new features over plain branches.
2839
It has support for a master_branch which is the data for bound branches.
2843
class BzrBranch8(BzrBranch):
2646
2844
"""A branch that stores tree-reference locations."""
2648
def _open_hook(self):
2846
def _open_hook(self, possible_transports=None):
2649
2847
if self._ignore_fallbacks:
2849
if possible_transports is None:
2850
possible_transports = [self.bzrdir.root_transport]
2652
2852
url = self.get_stacked_on_url()
2653
2853
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2674
2875
self._last_revision_info_cache = None
2675
2876
self._reference_info = None
2677
def _last_revision_info(self):
2678
revision_string = self._transport.get_bytes('last-revision')
2679
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2680
revision_id = cache_utf8.get_cached_utf8(revision_id)
2682
return revno, revision_id
2684
def _write_last_revision_info(self, revno, revision_id):
2685
"""Simply write out the revision id, with no checks.
2687
Use set_last_revision_info to perform this safely.
2689
Does not update the revision_history cache.
2690
Intended to be called by set_last_revision_info and
2691
_write_revision_history.
2693
revision_id = _mod_revision.ensure_null(revision_id)
2694
out_string = '%d %s\n' % (revno, revision_id)
2695
self._transport.put_bytes('last-revision', out_string,
2696
mode=self.bzrdir._get_file_mode())
2699
def set_last_revision_info(self, revno, revision_id):
2700
revision_id = _mod_revision.ensure_null(revision_id)
2701
old_revno, old_revid = self.last_revision_info()
2702
if self._get_append_revisions_only():
2703
self._check_history_violation(revision_id)
2704
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2705
self._write_last_revision_info(revno, revision_id)
2706
self._clear_cached_state()
2707
self._last_revision_info_cache = revno, revision_id
2708
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2710
def _synchronize_history(self, destination, revision_id):
2711
"""Synchronize last revision and revision history between branches.
2713
:see: Branch._synchronize_history
2715
# XXX: The base Branch has a fast implementation of this method based
2716
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2717
# that uses set_revision_history. This class inherits from BzrBranch5,
2718
# but wants the fast implementation, so it calls
2719
# Branch._synchronize_history directly.
2720
Branch._synchronize_history(self, destination, revision_id)
2722
2878
def _check_history_violation(self, revision_id):
2723
last_revision = _mod_revision.ensure_null(self.last_revision())
2879
current_revid = self.last_revision()
2880
last_revision = _mod_revision.ensure_null(current_revid)
2724
2881
if _mod_revision.is_null(last_revision):
2726
if last_revision not in self._lefthand_history(revision_id):
2727
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2883
graph = self.repository.get_graph()
2884
for lh_ancestor in graph.iter_lefthand_ancestry(revision_id):
2885
if lh_ancestor == current_revid:
2887
raise errors.AppendRevisionsOnlyViolation(self.user_url)
2729
2889
def _gen_revision_history(self):
2730
2890
"""Generate the revision history from last revision
3182
3323
raise NotImplementedError(self.push)
3326
def copy_content_into(self, revision_id=None):
3327
"""Copy the content of source into target
3329
revision_id: if not None, the revision history in the new branch will
3330
be truncated to end with revision_id.
3332
raise NotImplementedError(self.copy_content_into)
3335
def fetch(self, stop_revision=None, limit=None):
3338
:param stop_revision: Last revision to fetch
3339
:param limit: Optional rough limit of revisions to fetch
3341
raise NotImplementedError(self.fetch)
3185
3344
class GenericInterBranch(InterBranch):
3186
"""InterBranch implementation that uses public Branch functions.
3190
def _get_branch_formats_to_test():
3191
return BranchFormat._default_format, BranchFormat._default_format
3193
def update_revisions(self, stop_revision=None, overwrite=False,
3195
"""See InterBranch.update_revisions()."""
3345
"""InterBranch implementation that uses public Branch functions."""
3348
def is_compatible(klass, source, target):
3349
# GenericBranch uses the public API, so always compatible
3353
def _get_branch_formats_to_test(klass):
3354
return [(format_registry.get_default(), format_registry.get_default())]
3357
def unwrap_format(klass, format):
3358
if isinstance(format, remote.RemoteBranchFormat):
3359
format._ensure_real()
3360
return format._custom_format
3364
def copy_content_into(self, revision_id=None):
3365
"""Copy the content of source into target
3367
revision_id: if not None, the revision history in the new branch will
3368
be truncated to end with revision_id.
3370
self.source.update_references(self.target)
3371
self.source._synchronize_history(self.target, revision_id)
3373
parent = self.source.get_parent()
3374
except errors.InaccessibleParent, e:
3375
mutter('parent was not accessible to copy: %s', e)
3378
self.target.set_parent(parent)
3379
if self.source._push_should_merge_tags():
3380
self.source.tags.merge_to(self.target.tags)
3383
def fetch(self, stop_revision=None, limit=None):
3384
if self.target.base == self.source.base:
3196
3386
self.source.lock_read()
3198
other_revno, other_last_revision = self.source.last_revision_info()
3199
stop_revno = None # unknown
3200
if stop_revision is None:
3201
stop_revision = other_last_revision
3202
if _mod_revision.is_null(stop_revision):
3203
# if there are no commits, we're done.
3205
stop_revno = other_revno
3207
# what's the current last revision, before we fetch [and change it
3209
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3210
# we fetch here so that we don't process data twice in the common
3211
# case of having something to pull, and so that the check for
3212
# already merged can operate on the just fetched graph, which will
3213
# be cached in memory.
3214
self.target.fetch(self.source, stop_revision)
3215
# Check to see if one is an ancestor of the other
3218
graph = self.target.repository.get_graph()
3219
if self.target._check_if_descendant_or_diverged(
3220
stop_revision, last_rev, graph, self.source):
3221
# stop_revision is a descendant of last_rev, but we aren't
3222
# overwriting, so we're done.
3224
if stop_revno is None:
3226
graph = self.target.repository.get_graph()
3227
this_revno, this_last_revision = \
3228
self.target.last_revision_info()
3229
stop_revno = graph.find_distance_to_null(stop_revision,
3230
[(other_last_revision, other_revno),
3231
(this_last_revision, this_revno)])
3232
self.target.set_last_revision_info(stop_revno, stop_revision)
3388
fetch_spec_factory = fetch.FetchSpecFactory()
3389
fetch_spec_factory.source_branch = self.source
3390
fetch_spec_factory.source_branch_stop_revision_id = stop_revision
3391
fetch_spec_factory.source_repo = self.source.repository
3392
fetch_spec_factory.target_repo = self.target.repository
3393
fetch_spec_factory.target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
3394
fetch_spec_factory.limit = limit
3395
fetch_spec = fetch_spec_factory.make_fetch_spec()
3396
return self.target.repository.fetch(self.source.repository,
3397
fetch_spec=fetch_spec)
3234
3399
self.source.unlock()
3402
def _update_revisions(self, stop_revision=None, overwrite=False,
3404
other_revno, other_last_revision = self.source.last_revision_info()
3405
stop_revno = None # unknown
3406
if stop_revision is None:
3407
stop_revision = other_last_revision
3408
if _mod_revision.is_null(stop_revision):
3409
# if there are no commits, we're done.
3411
stop_revno = other_revno
3413
# what's the current last revision, before we fetch [and change it
3415
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3416
# we fetch here so that we don't process data twice in the common
3417
# case of having something to pull, and so that the check for
3418
# already merged can operate on the just fetched graph, which will
3419
# be cached in memory.
3420
self.fetch(stop_revision=stop_revision)
3421
# Check to see if one is an ancestor of the other
3424
graph = self.target.repository.get_graph()
3425
if self.target._check_if_descendant_or_diverged(
3426
stop_revision, last_rev, graph, self.source):
3427
# stop_revision is a descendant of last_rev, but we aren't
3428
# overwriting, so we're done.
3430
if stop_revno is None:
3432
graph = self.target.repository.get_graph()
3433
this_revno, this_last_revision = \
3434
self.target.last_revision_info()
3435
stop_revno = graph.find_distance_to_null(stop_revision,
3436
[(other_last_revision, other_revno),
3437
(this_last_revision, this_revno)])
3438
self.target.set_last_revision_info(stop_revno, stop_revision)
3236
3441
def pull(self, overwrite=False, stop_revision=None,
3442
possible_transports=None, run_hooks=True,
3443
_override_hook_target=None, local=False):
3444
"""Pull from source into self, updating my master if any.
3446
:param run_hooks: Private parameter - if false, this branch
3447
is being called because it's the master of the primary branch,
3448
so it should not run its hooks.
3450
bound_location = self.target.get_bound_location()
3451
if local and not bound_location:
3452
raise errors.LocalRequiresBoundBranch()
3453
master_branch = None
3454
source_is_master = False
3456
# bound_location comes from a config file, some care has to be
3457
# taken to relate it to source.user_url
3458
normalized = urlutils.normalize_url(bound_location)
3460
relpath = self.source.user_transport.relpath(normalized)
3461
source_is_master = (relpath == '')
3462
except (errors.PathNotChild, errors.InvalidURL):
3463
source_is_master = False
3464
if not local and bound_location and not source_is_master:
3465
# not pulling from master, so we need to update master.
3466
master_branch = self.target.get_master_branch(possible_transports)
3467
master_branch.lock_write()
3470
# pull from source into master.
3471
master_branch.pull(self.source, overwrite, stop_revision,
3473
return self._pull(overwrite,
3474
stop_revision, _hook_master=master_branch,
3475
run_hooks=run_hooks,
3476
_override_hook_target=_override_hook_target,
3477
merge_tags_to_master=not source_is_master)
3480
master_branch.unlock()
3482
def push(self, overwrite=False, stop_revision=None, lossy=False,
3483
_override_hook_source_branch=None):
3484
"""See InterBranch.push.
3486
This is the basic concrete implementation of push()
3488
:param _override_hook_source_branch: If specified, run the hooks
3489
passing this Branch as the source, rather than self. This is for
3490
use of RemoteBranch, where push is delegated to the underlying
3494
raise errors.LossyPushToSameVCS(self.source, self.target)
3495
# TODO: Public option to disable running hooks - should be trivial but
3498
op = cleanup.OperationWithCleanups(self._push_with_bound_branches)
3499
op.add_cleanup(self.source.lock_read().unlock)
3500
op.add_cleanup(self.target.lock_write().unlock)
3501
return op.run(overwrite, stop_revision,
3502
_override_hook_source_branch=_override_hook_source_branch)
3504
def _basic_push(self, overwrite, stop_revision):
3505
"""Basic implementation of push without bound branches or hooks.
3507
Must be called with source read locked and target write locked.
3509
result = BranchPushResult()
3510
result.source_branch = self.source
3511
result.target_branch = self.target
3512
result.old_revno, result.old_revid = self.target.last_revision_info()
3513
self.source.update_references(self.target)
3514
if result.old_revid != stop_revision:
3515
# We assume that during 'push' this repository is closer than
3517
graph = self.source.repository.get_graph(self.target.repository)
3518
self._update_revisions(stop_revision, overwrite=overwrite,
3520
if self.source._push_should_merge_tags():
3521
result.tag_updates, result.tag_conflicts = (
3522
self.source.tags.merge_to(self.target.tags, overwrite))
3523
result.new_revno, result.new_revid = self.target.last_revision_info()
3526
def _push_with_bound_branches(self, operation, overwrite, stop_revision,
3527
_override_hook_source_branch=None):
3528
"""Push from source into target, and into target's master if any.
3531
if _override_hook_source_branch:
3532
result.source_branch = _override_hook_source_branch
3533
for hook in Branch.hooks['post_push']:
3536
bound_location = self.target.get_bound_location()
3537
if bound_location and self.target.base != bound_location:
3538
# there is a master branch.
3540
# XXX: Why the second check? Is it even supported for a branch to
3541
# be bound to itself? -- mbp 20070507
3542
master_branch = self.target.get_master_branch()
3543
master_branch.lock_write()
3544
operation.add_cleanup(master_branch.unlock)
3545
# push into the master from the source branch.
3546
master_inter = InterBranch.get(self.source, master_branch)
3547
master_inter._basic_push(overwrite, stop_revision)
3548
# and push into the target branch from the source. Note that
3549
# we push from the source branch again, because it's considered
3550
# the highest bandwidth repository.
3551
result = self._basic_push(overwrite, stop_revision)
3552
result.master_branch = master_branch
3553
result.local_branch = self.target
3555
master_branch = None
3557
result = self._basic_push(overwrite, stop_revision)
3558
# TODO: Why set master_branch and local_branch if there's no
3559
# binding? Maybe cleaner to just leave them unset? -- mbp
3561
result.master_branch = self.target
3562
result.local_branch = None
3566
def _pull(self, overwrite=False, stop_revision=None,
3237
3567
possible_transports=None, _hook_master=None, run_hooks=True,
3238
_override_hook_target=None, local=False):
3568
_override_hook_target=None, local=False,
3569
merge_tags_to_master=True):
3239
3570
"""See Branch.pull.
3572
This function is the core worker, used by GenericInterBranch.pull to
3573
avoid duplication when pulling source->master and source->local.
3241
3575
:param _hook_master: Private parameter - set the branch to
3242
3576
be supplied as the master to pull hooks.
3243
3577
:param run_hooks: Private parameter - if false, this branch
3244
3578
is being called because it's the master of the primary branch,
3245
3579
so it should not run its hooks.
3580
is being called because it's the master of the primary branch,
3581
so it should not run its hooks.
3246
3582
:param _override_hook_target: Private parameter - set the branch to be
3247
3583
supplied as the target_branch to pull hooks.
3248
3584
:param local: Only update the local branch, and not the bound branch.
3288
3625
self.source.unlock()
3291
def push(self, overwrite=False, stop_revision=None,
3292
_override_hook_source_branch=None):
3293
"""See InterBranch.push.
3295
This is the basic concrete implementation of push()
3297
:param _override_hook_source_branch: If specified, run
3298
the hooks passing this Branch as the source, rather than self.
3299
This is for use of RemoteBranch, where push is delegated to the
3300
underlying vfs-based Branch.
3302
# TODO: Public option to disable running hooks - should be trivial but
3304
self.source.lock_read()
3306
return _run_with_write_locked_target(
3307
self.target, self._push_with_bound_branches, overwrite,
3309
_override_hook_source_branch=_override_hook_source_branch)
3311
self.source.unlock()
3313
def _push_with_bound_branches(self, overwrite, stop_revision,
3314
_override_hook_source_branch=None):
3315
"""Push from source into target, and into target's master if any.
3318
if _override_hook_source_branch:
3319
result.source_branch = _override_hook_source_branch
3320
for hook in Branch.hooks['post_push']:
3323
bound_location = self.target.get_bound_location()
3324
if bound_location and self.target.base != bound_location:
3325
# there is a master branch.
3327
# XXX: Why the second check? Is it even supported for a branch to
3328
# be bound to itself? -- mbp 20070507
3329
master_branch = self.target.get_master_branch()
3330
master_branch.lock_write()
3332
# push into the master from the source branch.
3333
self.source._basic_push(master_branch, overwrite, stop_revision)
3334
# and push into the target branch from the source. Note that we
3335
# push from the source branch again, because its considered the
3336
# highest bandwidth repository.
3337
result = self.source._basic_push(self.target, overwrite,
3339
result.master_branch = master_branch
3340
result.local_branch = self.target
3344
master_branch.unlock()
3347
result = self.source._basic_push(self.target, overwrite,
3349
# TODO: Why set master_branch and local_branch if there's no
3350
# binding? Maybe cleaner to just leave them unset? -- mbp
3352
result.master_branch = self.target
3353
result.local_branch = None
3358
def is_compatible(self, source, target):
3359
# GenericBranch uses the public API, so always compatible
3363
class InterToBranch5(GenericInterBranch):
3366
def _get_branch_formats_to_test():
3367
return BranchFormat._default_format, BzrBranchFormat5()
3369
def pull(self, overwrite=False, stop_revision=None,
3370
possible_transports=None, run_hooks=True,
3371
_override_hook_target=None, local=False):
3372
"""Pull from source into self, updating my master if any.
3374
:param run_hooks: Private parameter - if false, this branch
3375
is being called because it's the master of the primary branch,
3376
so it should not run its hooks.
3378
bound_location = self.target.get_bound_location()
3379
if local and not bound_location:
3380
raise errors.LocalRequiresBoundBranch()
3381
master_branch = None
3382
if not local and bound_location and self.source.user_url != bound_location:
3383
# not pulling from master, so we need to update master.
3384
master_branch = self.target.get_master_branch(possible_transports)
3385
master_branch.lock_write()
3388
# pull from source into master.
3389
master_branch.pull(self.source, overwrite, stop_revision,
3391
return super(InterToBranch5, self).pull(overwrite,
3392
stop_revision, _hook_master=master_branch,
3393
run_hooks=run_hooks,
3394
_override_hook_target=_override_hook_target)
3397
master_branch.unlock()
3400
3629
InterBranch.register_optimiser(GenericInterBranch)
3401
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
