846
870
# versioned roots do not change unless the tree found a change.
873
class RepositoryWriteLockResult(LogicalLockResult):
874
"""The result of write locking a repository.
876
:ivar repository_token: The token obtained from the underlying lock, or
878
:ivar unlock: A callable which will unlock the lock.
881
def __init__(self, unlock, repository_token):
882
LogicalLockResult.__init__(self, unlock)
883
self.repository_token = repository_token
886
return "RepositoryWriteLockResult(%s, %s)" % (self.repository_token,
849
890
######################################################################
853
class Repository(object):
894
class Repository(_RelockDebugMixin, bzrdir.ControlComponent):
854
895
"""Repository holding history for one or more branches.
856
897
The repository holds and retrieves historical information including
1293
1333
self._reconcile_does_inventory_gc = True
1294
1334
self._reconcile_fixes_text_parents = False
1295
1335
self._reconcile_backsup_inventory = True
1296
# not right yet - should be more semantically clear ?
1298
# TODO: make sure to construct the right store classes, etc, depending
1299
# on whether escaping is required.
1300
self._warn_if_deprecated()
1301
1336
self._write_group = None
1302
1337
# Additional places to query for data.
1303
1338
self._fallback_repositories = []
1304
1339
# An InventoryEntry cache, used during deserialization
1305
1340
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1341
# Is it safe to return inventory entries directly from the entry cache,
1342
# rather copying them?
1343
self._safe_to_return_from_cache = False
1346
def user_transport(self):
1347
return self.bzrdir.user_transport
1350
def control_transport(self):
1351
return self._transport
1307
1353
def __repr__(self):
1308
1354
if self._fallback_repositories:
1365
1417
:raises MismatchedToken: if the specified token doesn't match the token
1366
1418
of the existing lock.
1367
1419
:seealso: start_write_group.
1369
A token should be passed in if you know that you have locked the object
1370
some other way, and need to synchronise this object's state with that
1373
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
1420
:return: A RepositoryWriteLockResult.
1375
1422
locked = self.is_locked()
1376
result = self.control_files.lock_write(token=token)
1423
token = self.control_files.lock_write(token=token)
1425
self._warn_if_deprecated()
1426
self._note_lock('w')
1378
1427
for repo in self._fallback_repositories:
1379
1428
# Writes don't affect fallback repos
1380
1429
repo.lock_read()
1381
1430
self._refresh_data()
1431
return RepositoryWriteLockResult(self.unlock, token)
1384
1433
def lock_read(self):
1434
"""Lock the repository for read operations.
1436
:return: An object with an unlock method which will release the lock
1385
1439
locked = self.is_locked()
1386
1440
self.control_files.lock_read()
1442
self._warn_if_deprecated()
1443
self._note_lock('r')
1388
1444
for repo in self._fallback_repositories:
1389
1445
repo.lock_read()
1390
1446
self._refresh_data()
1447
return LogicalLockResult(self.unlock)
1392
1449
def get_physical_lock_status(self):
1393
1450
return self.control_files.get_physical_lock_status()
1487
1541
except errors.NoRepositoryPresent:
1490
return False, (None, repository)
1544
return False, ([], repository)
1491
1545
self.first_call = False
1493
value = (bzrdir.open_branch(), None)
1494
except errors.NotBranchError:
1495
value = (None, None)
1546
value = (bzrdir.list_branches(), None)
1496
1547
return True, value
1499
for branch, repository in bzrdir.BzrDir.find_bzrdirs(
1500
self.bzrdir.root_transport, evaluate=Evaluator()):
1501
if branch is not None:
1502
branches.append(branch)
1550
for branches, repository in bzrdir.BzrDir.find_bzrdirs(
1551
self.user_transport, evaluate=Evaluator()):
1552
if branches is not None:
1553
ret.extend(branches)
1503
1554
if not using and repository is not None:
1504
branches.extend(repository.find_branches())
1555
ret.extend(repository.find_branches())
1507
1558
@needs_read_lock
1508
1559
def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
1617
1668
return missing_keys
1619
1670
def refresh_data(self):
1620
"""Re-read any data needed to to synchronise with disk.
1671
"""Re-read any data needed to synchronise with disk.
1622
1673
This method is intended to be called after another repository instance
1623
1674
(such as one used by a smart server) has inserted data into the
1624
repository. It may not be called during a write group, but may be
1625
called at any other time.
1675
repository. On all repositories this will work outside of write groups.
1676
Some repository formats (pack and newer for bzrlib native formats)
1677
support refresh_data inside write groups. If called inside a write
1678
group on a repository that does not support refreshing in a write group
1679
IsInWriteGroupError will be raised.
1627
if self.is_in_write_group():
1628
raise errors.InternalBzrError(
1629
"May not refresh_data while in a write group.")
1630
1681
self._refresh_data()
1632
1683
def resume_write_group(self, tokens):
1885
1937
rev = self._serializer.read_revision_from_string(text)
1886
1938
yield (revid, rev)
1889
def get_revision_xml(self, revision_id):
1890
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1891
# would have already do it.
1892
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1893
# TODO: this can't just be replaced by:
1894
# return self._serializer.write_revision_to_string(
1895
# self.get_revision(revision_id))
1896
# as cStringIO preservers the encoding unlike write_revision_to_string
1897
# or some other call down the path.
1898
rev = self.get_revision(revision_id)
1899
rev_tmp = cStringIO.StringIO()
1900
# the current serializer..
1901
self._serializer.write_revision(rev, rev_tmp)
1903
return rev_tmp.getvalue()
1905
1940
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1906
1941
"""Produce a generator of revision deltas.
2410
2441
next_key = None
2413
def deserialise_inventory(self, revision_id, xml):
2444
def _deserialise_inventory(self, revision_id, xml):
2414
2445
"""Transform the xml into an inventory object.
2416
2447
:param revision_id: The expected revision id of the inventory.
2417
2448
:param xml: A serialised inventory.
2419
2450
result = self._serializer.read_inventory_from_string(xml, revision_id,
2420
entry_cache=self._inventory_entry_cache)
2451
entry_cache=self._inventory_entry_cache,
2452
return_from_cache=self._safe_to_return_from_cache)
2421
2453
if result.revision_id != revision_id:
2422
2454
raise AssertionError('revision id mismatch %s != %s' % (
2423
2455
result.revision_id, revision_id))
2426
def serialise_inventory(self, inv):
2427
return self._serializer.write_inventory_to_string(inv)
2429
def _serialise_inventory_to_lines(self, inv):
2430
return self._serializer.write_inventory_to_lines(inv)
2432
2458
def get_serializer_format(self):
2433
2459
return self._serializer.format_num
2435
2461
@needs_read_lock
2436
def get_inventory_xml(self, revision_id):
2437
"""Get inventory XML as a file object."""
2462
def _get_inventory_xml(self, revision_id):
2463
"""Get serialized inventory as a string."""
2438
2464
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2440
2466
text, revision_id = texts.next()
2505
2525
next_id = parents[0]
2508
def get_revision_inventory(self, revision_id):
2509
"""Return inventory of a past revision."""
2510
# TODO: Unify this with get_inventory()
2511
# bzr 0.0.6 and later imposes the constraint that the inventory_id
2512
# must be the same as its revision, so this is trivial.
2513
if revision_id is None:
2514
# This does not make sense: if there is no revision,
2515
# then it is the current tree inventory surely ?!
2516
# and thus get_root_id() is something that looks at the last
2517
# commit on the branch, and the get_root_id is an inventory check.
2518
raise NotImplementedError
2519
# return Inventory(self.get_root_id())
2521
return self.get_inventory(revision_id)
2523
2527
def is_shared(self):
2524
2528
"""Return True if this repository is flagged as a shared repository."""
2525
2529
raise NotImplementedError(self.is_shared)
2764
2780
result.check(callback_refs)
2767
def _warn_if_deprecated(self):
2783
def _warn_if_deprecated(self, branch=None):
2768
2784
global _deprecation_warning_done
2769
2785
if _deprecation_warning_done:
2771
_deprecation_warning_done = True
2772
warning("Format %s for %s is deprecated - please use 'bzr upgrade' to get better performance"
2773
% (self._format, self.bzrdir.transport.base))
2789
conf = config.GlobalConfig()
2791
conf = branch.get_config()
2792
if conf.suppress_warning('format_deprecation'):
2794
warning("Format %s for %s is deprecated -"
2795
" please use 'bzr upgrade' to get better performance"
2796
% (self._format, self.bzrdir.transport.base))
2798
_deprecation_warning_done = True
2775
2800
def supports_rich_root(self):
2776
2801
return self._format.rich_root_data
3166
3195
raise NotImplementedError(self.network_name)
3168
3197
def check_conversion_target(self, target_format):
3169
raise NotImplementedError(self.check_conversion_target)
3198
if self.rich_root_data and not target_format.rich_root_data:
3199
raise errors.BadConversionTarget(
3200
'Does not support rich root data.', target_format,
3202
if (self.supports_tree_reference and
3203
not getattr(target_format, 'supports_tree_reference', False)):
3204
raise errors.BadConversionTarget(
3205
'Does not support nested trees', target_format,
3171
3208
def open(self, a_bzrdir, _found=False):
3172
3209
"""Return an instance of this format for the bzrdir a_bzrdir.
3386
3432
:param revision_id: if None all content is copied, if NULL_REVISION no
3387
3433
content is copied.
3388
:param pb: optional progress bar to use for progress reports. If not
3389
provided a default one will be created.
3437
ui.ui_factory.warn_experimental_format_fetch(self)
3392
3438
from bzrlib.fetch import RepoFetcher
3439
# See <https://launchpad.net/bugs/456077> asking for a warning here
3440
if self.source._format.network_name() != self.target._format.network_name():
3441
ui.ui_factory.show_user_warning('cross_format_fetch',
3442
from_format=self.source._format,
3443
to_format=self.target._format)
3393
3444
f = RepoFetcher(to_repository=self.target,
3394
3445
from_repository=self.source,
3395
3446
last_revision=revision_id,
3396
3447
fetch_spec=fetch_spec,
3397
pb=pb, find_ghosts=find_ghosts)
3448
find_ghosts=find_ghosts)
3399
3450
def _walk_to_common_revisions(self, revision_ids):
3400
3451
"""Walk out from revision_ids in source to revisions target has.
3725
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3776
def _get_trees(self, revision_ids, cache):
3778
for rev_id in revision_ids:
3780
possible_trees.append((rev_id, cache[rev_id]))
3782
# Not cached, but inventory might be present anyway.
3784
tree = self.source.revision_tree(rev_id)
3785
except errors.NoSuchRevision:
3786
# Nope, parent is ghost.
3789
cache[rev_id] = tree
3790
possible_trees.append((rev_id, tree))
3791
return possible_trees
3793
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3726
3794
"""Get the best delta and base for this revision.
3728
3796
:return: (basis_id, delta)
3730
possible_trees = [(parent_id, cache[parent_id])
3731
for parent_id in parent_ids
3732
if parent_id in cache]
3733
if len(possible_trees) == 0:
3734
# There either aren't any parents, or the parents aren't in the
3735
# cache, so just use the last converted tree
3736
possible_trees.append((basis_id, cache[basis_id]))
3799
# Generate deltas against each tree, to find the shortest.
3800
texts_possibly_new_in_tree = set()
3738
3801
for basis_id, basis_tree in possible_trees:
3739
3802
delta = tree.inventory._make_delta(basis_tree.inventory)
3803
for old_path, new_path, file_id, new_entry in delta:
3804
if new_path is None:
3805
# This file_id isn't present in the new rev, so we don't
3809
# Rich roots are handled elsewhere...
3811
kind = new_entry.kind
3812
if kind != 'directory' and kind != 'file':
3813
# No text record associated with this inventory entry.
3815
# This is a directory or file that has changed somehow.
3816
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3740
3817
deltas.append((len(delta), basis_id, delta))
3742
3819
return deltas[0][1:]
3744
def _fetch_batch(self, revision_ids, basis_id, cache):
3821
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3822
"""Find all parent revisions that are absent, but for which the
3823
inventory is present, and copy those inventories.
3825
This is necessary to preserve correctness when the source is stacked
3826
without fallbacks configured. (Note that in cases like upgrade the
3827
source may be not have _fallback_repositories even though it is
3831
for parents in parent_map.values():
3832
parent_revs.update(parents)
3833
present_parents = self.source.get_parent_map(parent_revs)
3834
absent_parents = set(parent_revs).difference(present_parents)
3835
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3836
(rev_id,) for rev_id in absent_parents)
3837
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3838
for parent_tree in self.source.revision_trees(parent_inv_ids):
3839
current_revision_id = parent_tree.get_revision_id()
3840
parents_parents_keys = parent_invs_keys_for_stacking[
3841
(current_revision_id,)]
3842
parents_parents = [key[-1] for key in parents_parents_keys]
3843
basis_id = _mod_revision.NULL_REVISION
3844
basis_tree = self.source.revision_tree(basis_id)
3845
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3846
self.target.add_inventory_by_delta(
3847
basis_id, delta, current_revision_id, parents_parents)
3848
cache[current_revision_id] = parent_tree
3850
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3745
3851
"""Fetch across a few revisions.
3747
3853
:param revision_ids: The revisions to copy
3748
3854
:param basis_id: The revision_id of a tree that must be in cache, used
3749
3855
as a basis for delta when no other base is available
3750
3856
:param cache: A cache of RevisionTrees that we can use.
3857
:param a_graph: A Graph object to determine the heads() of the
3858
rich-root data stream.
3751
3859
:return: The revision_id of the last converted tree. The RevisionTree
3752
3860
for it will be in cache
3759
3867
pending_deltas = []
3760
3868
pending_revisions = []
3761
3869
parent_map = self.source.get_parent_map(revision_ids)
3870
self._fetch_parent_invs_for_stacking(parent_map, cache)
3871
self.source._safe_to_return_from_cache = True
3762
3872
for tree in self.source.revision_trees(revision_ids):
3873
# Find a inventory delta for this revision.
3874
# Find text entries that need to be copied, too.
3763
3875
current_revision_id = tree.get_revision_id()
3764
3876
parent_ids = parent_map.get(current_revision_id, ())
3877
parent_trees = self._get_trees(parent_ids, cache)
3878
possible_trees = list(parent_trees)
3879
if len(possible_trees) == 0:
3880
# There either aren't any parents, or the parents are ghosts,
3881
# so just use the last converted tree.
3882
possible_trees.append((basis_id, cache[basis_id]))
3765
3883
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3885
revision = self.source.get_revision(current_revision_id)
3886
pending_deltas.append((basis_id, delta,
3887
current_revision_id, revision.parent_ids))
3767
3888
if self._converting_to_rich_root:
3768
3889
self._revision_id_to_root_id[current_revision_id] = \
3769
3890
tree.get_root_id()
3770
# Find text entries that need to be copied
3891
# Determine which texts are in present in this revision but not in
3892
# any of the available parents.
3893
texts_possibly_new_in_tree = set()
3771
3894
for old_path, new_path, file_id, entry in delta:
3772
if new_path is not None:
3775
if not self.target.supports_rich_root():
3776
# The target doesn't support rich root, so we don't
3779
if self._converting_to_rich_root:
3780
# This can't be copied normally, we have to insert
3782
root_keys_to_create.add((file_id, entry.revision))
3784
text_keys.add((file_id, entry.revision))
3785
revision = self.source.get_revision(current_revision_id)
3786
pending_deltas.append((basis_id, delta,
3787
current_revision_id, revision.parent_ids))
3895
if new_path is None:
3896
# This file_id isn't present in the new rev
3900
if not self.target.supports_rich_root():
3901
# The target doesn't support rich root, so we don't
3904
if self._converting_to_rich_root:
3905
# This can't be copied normally, we have to insert
3907
root_keys_to_create.add((file_id, entry.revision))
3910
texts_possibly_new_in_tree.add((file_id, entry.revision))
3911
for basis_id, basis_tree in possible_trees:
3912
basis_inv = basis_tree.inventory
3913
for file_key in list(texts_possibly_new_in_tree):
3914
file_id, file_revision = file_key
3916
entry = basis_inv[file_id]
3917
except errors.NoSuchId:
3919
if entry.revision == file_revision:
3920
texts_possibly_new_in_tree.remove(file_key)
3921
text_keys.update(texts_possibly_new_in_tree)
3788
3922
pending_revisions.append(revision)
3789
3923
cache[current_revision_id] = tree
3790
3924
basis_id = current_revision_id
3925
self.source._safe_to_return_from_cache = False
3791
3926
# Copy file texts
3792
3927
from_texts = self.source.texts
3793
3928
to_texts = self.target.texts
3794
3929
if root_keys_to_create:
3795
from bzrlib.fetch import _new_root_data_stream
3796
root_stream = _new_root_data_stream(
3930
root_stream = _mod_fetch._new_root_data_stream(
3797
3931
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3932
self.source, graph=a_graph)
3799
3933
to_texts.insert_record_stream(root_stream)
3800
3934
to_texts.insert_record_stream(from_texts.get_record_stream(
3801
3935
text_keys, self.target._format._fetch_order,
3823
3957
for parent_tree in self.source.revision_trees(parent_map):
3824
3958
current_revision_id = parent_tree.get_revision_id()
3825
3959
parents_parents = parent_map[current_revision_id]
3960
possible_trees = self._get_trees(parents_parents, cache)
3961
if len(possible_trees) == 0:
3962
# There either aren't any parents, or the parents are
3963
# ghosts, so just use the last converted tree.
3964
possible_trees.append((basis_id, cache[basis_id]))
3826
3965
basis_id, delta = self._get_delta_for_revision(parent_tree,
3827
parents_parents, basis_id, cache)
3966
parents_parents, possible_trees)
3828
3967
self.target.add_inventory_by_delta(
3829
3968
basis_id, delta, current_revision_id, parents_parents)
3830
3969
# insert signatures and revisions
3853
3992
cache[basis_id] = basis_tree
3854
3993
del basis_tree # We don't want to hang on to it here
3995
if self._converting_to_rich_root and len(revision_ids) > 100:
3996
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3856
4001
for offset in range(0, len(revision_ids), batch_size):
3857
4002
self.target.start_write_group()
3859
4004
pb.update('Transferring revisions', offset,
3860
4005
len(revision_ids))
3861
4006
batch = revision_ids[offset:offset+batch_size]
3862
basis_id = self._fetch_batch(batch, basis_id, cache)
4007
basis_id = self._fetch_batch(batch, basis_id, cache,
4010
self.source._safe_to_return_from_cache = False
3864
4011
self.target.abort_write_group()
3878
4025
"""See InterRepository.fetch()."""
3879
4026
if fetch_spec is not None:
3880
4027
raise AssertionError("Not implemented yet...")
4028
ui.ui_factory.warn_experimental_format_fetch(self)
3881
4029
if (not self.source.supports_rich_root()
3882
4030
and self.target.supports_rich_root()):
3883
4031
self._converting_to_rich_root = True
3884
4032
self._revision_id_to_root_id = {}
3886
4034
self._converting_to_rich_root = False
4035
# See <https://launchpad.net/bugs/456077> asking for a warning here
4036
if self.source._format.network_name() != self.target._format.network_name():
4037
ui.ui_factory.show_user_warning('cross_format_fetch',
4038
from_format=self.source._format,
4039
to_format=self.target._format)
3887
4040
revision_ids = self.target.search_missing_revision_ids(self.source,
3888
4041
revision_id, find_ghosts=find_ghosts).get_keys()
3889
4042
if not revision_ids:
3958
4111
:param to_convert: The disk object to convert.
3959
4112
:param pb: a progress bar to use for progress information.
4114
pb = ui.ui_factory.nested_progress_bar()
3964
4117
# this is only useful with metadir layouts - separated repo content.
3965
4118
# trigger an assertion if not such
3966
4119
repo._format.get_format_string()
3967
4120
self.repo_dir = repo.bzrdir
3968
self.step('Moving repository to repository.backup')
4121
pb.update('Moving repository to repository.backup')
3969
4122
self.repo_dir.transport.move('repository', 'repository.backup')
3970
4123
backup_transport = self.repo_dir.transport.clone('repository.backup')
3971
4124
repo._format.check_conversion_target(self.target_format)
3972
4125
self.source_repo = repo._format.open(self.repo_dir,
3974
4127
_override_transport=backup_transport)
3975
self.step('Creating new repository')
4128
pb.update('Creating new repository')
3976
4129
converted = self.target_format.initialize(self.repo_dir,
3977
4130
self.source_repo.is_shared())
3978
4131
converted.lock_write()
3980
self.step('Copying content into repository.')
4133
pb.update('Copying content')
3981
4134
self.source_repo.copy_content_into(converted)
3983
4136
converted.unlock()
3984
self.step('Deleting old repository content.')
4137
pb.update('Deleting old repository content')
3985
4138
self.repo_dir.transport.delete_tree('repository.backup')
3986
self.pb.note('repository converted')
3988
def step(self, message):
3989
"""Update the pb by a step."""
3991
self.pb.update(message, self.count, self.total)
4139
ui.ui_factory.note('repository converted')
3994
4143
_unescape_map = {
4481
4637
def _get_convertable_inventory_stream(self, revision_ids,
4482
4638
delta_versus_null=False):
4483
# The source is using CHKs, but the target either doesn't or it has a
4484
# different serializer. The StreamSink code expects to be able to
4639
# The two formats are sufficiently different that there is no fast
4640
# path, so we need to send just inventorydeltas, which any
4641
# sufficiently modern client can insert into any repository.
4642
# The StreamSink code expects to be able to
4485
4643
# convert on the target, so we need to put bytes-on-the-wire that can
4486
4644
# be converted. That means inventory deltas (if the remote is <1.19,
4487
4645
# RemoteStreamSink will fallback to VFS to insert the deltas).