757
613
self._ensure_real()
758
614
return self._real_repository.suspend_write_group()
760
def get_missing_parent_inventories(self, check_for_missing_texts=True):
762
return self._real_repository.get_missing_parent_inventories(
763
check_for_missing_texts=check_for_missing_texts)
765
def _get_rev_id_for_revno_vfs(self, revno, known_pair):
767
return self._real_repository.get_rev_id_for_revno(
770
def get_rev_id_for_revno(self, revno, known_pair):
771
"""See Repository.get_rev_id_for_revno."""
772
path = self.bzrdir._path_for_remote_call(self._client)
774
if self._client._medium._is_remote_before((1, 17)):
775
return self._get_rev_id_for_revno_vfs(revno, known_pair)
776
response = self._call(
777
'Repository.get_rev_id_for_revno', path, revno, known_pair)
778
except errors.UnknownSmartMethod:
779
self._client._medium._remember_remote_is_before((1, 17))
780
return self._get_rev_id_for_revno_vfs(revno, known_pair)
781
if response[0] == 'ok':
782
return True, response[1]
783
elif response[0] == 'history-incomplete':
784
known_pair = response[1:3]
785
for fallback in self._fallback_repositories:
786
found, result = fallback.get_rev_id_for_revno(revno, known_pair)
791
# Not found in any fallbacks
792
return False, known_pair
794
raise errors.UnexpectedSmartServerResponse(response)
796
616
def _ensure_real(self):
797
617
"""Ensure that there is a _real_repository set.
799
619
Used before calls to self._real_repository.
801
Note that _ensure_real causes many roundtrips to the server which are
802
not desirable, and prevents the use of smart one-roundtrip RPC's to
803
perform complex operations (such as accessing parent data, streaming
804
revisions etc). Adding calls to _ensure_real should only be done when
805
bringing up new functionality, adding fallbacks for smart methods that
806
require a fallback path, and never to replace an existing smart method
807
invocation. If in doubt chat to the bzr network team.
809
621
if self._real_repository is None:
810
if 'hpssvfs' in debug.debug_flags:
812
warning('VFS Repository access triggered\n%s',
813
''.join(traceback.format_stack()))
814
self._unstacked_provider.missing_keys.clear()
815
622
self.bzrdir._ensure_real()
816
623
self._set_real_repository(
817
624
self.bzrdir._real_bzrdir.open_repository())
877
689
"""Return a source for streaming from this repository."""
878
690
return RemoteStreamSource(self, to_format)
881
692
def has_revision(self, revision_id):
882
"""True if this repository has a copy of the revision."""
883
# Copy of bzrlib.repository.Repository.has_revision
884
return revision_id in self.has_revisions((revision_id,))
693
"""See Repository.has_revision()."""
694
if revision_id == NULL_REVISION:
695
# The null revision is always present.
697
path = self.bzrdir._path_for_remote_call(self._client)
698
response = self._call('Repository.has_revision', path, revision_id)
699
if response[0] not in ('yes', 'no'):
700
raise errors.UnexpectedSmartServerResponse(response)
701
if response[0] == 'yes':
703
for fallback_repo in self._fallback_repositories:
704
if fallback_repo.has_revision(revision_id):
887
708
def has_revisions(self, revision_ids):
888
"""Probe to find out the presence of multiple revisions.
890
:param revision_ids: An iterable of revision_ids.
891
:return: A set of the revision_ids that were present.
893
# Copy of bzrlib.repository.Repository.has_revisions
894
parent_map = self.get_parent_map(revision_ids)
895
result = set(parent_map)
896
if _mod_revision.NULL_REVISION in revision_ids:
897
result.add(_mod_revision.NULL_REVISION)
709
"""See Repository.has_revisions()."""
710
# FIXME: This does many roundtrips, particularly when there are
711
# fallback repositories. -- mbp 20080905
713
for revision_id in revision_ids:
714
if self.has_revision(revision_id):
715
result.add(revision_id)
900
def _has_same_fallbacks(self, other_repo):
901
"""Returns true if the repositories have the same fallbacks."""
902
# XXX: copied from Repository; it should be unified into a base class
903
# <https://bugs.launchpad.net/bzr/+bug/401622>
904
my_fb = self._fallback_repositories
905
other_fb = other_repo._fallback_repositories
906
if len(my_fb) != len(other_fb):
908
for f, g in zip(my_fb, other_fb):
909
if not f.has_same_location(g):
913
718
def has_same_location(self, other):
914
# TODO: Move to RepositoryBase and unify with the regular Repository
915
# one; unfortunately the tests rely on slightly different behaviour at
916
# present -- mbp 20090710
917
719
return (self.__class__ is other.__class__ and
918
720
self.bzrdir.transport.base == other.bzrdir.transport.base)
1240
996
:param repository: A repository.
1242
if not self._format.supports_external_lookups:
1243
raise errors.UnstackableRepositoryFormat(
1244
self._format.network_name(), self.base)
998
# XXX: At the moment the RemoteRepository will allow fallbacks
999
# unconditionally - however, a _real_repository will usually exist,
1000
# and may raise an error if it's not accommodated by the underlying
1001
# format. Eventually we should check when opening the repository
1002
# whether it's willing to allow them or not.
1245
1004
# We need to accumulate additional repositories here, to pass them in
1246
1005
# on various RPC's.
1248
if self.is_locked():
1249
# We will call fallback.unlock() when we transition to the unlocked
1250
# state, so always add a lock here. If a caller passes us a locked
1251
# repository, they are responsible for unlocking it later.
1252
repository.lock_read()
1253
self._check_fallback_repository(repository)
1254
1007
self._fallback_repositories.append(repository)
1255
1008
# If self._real_repository was parameterised already (e.g. because a
1256
1009
# _real_branch had its get_stacked_on_url method called), then the
1257
1010
# repository to be added may already be in the _real_repositories list.
1258
1011
if self._real_repository is not None:
1259
fallback_locations = [repo.user_url for repo in
1260
self._real_repository._fallback_repositories]
1261
if repository.user_url not in fallback_locations:
1012
if repository not in self._real_repository._fallback_repositories:
1262
1013
self._real_repository.add_fallback_repository(repository)
1264
def _check_fallback_repository(self, repository):
1265
"""Check that this repository can fallback to repository safely.
1267
Raise an error if not.
1269
:param repository: A repository to fallback to.
1271
return _mod_repository.InterRepository._assert_same_model(
1015
# They are also seen by the fallback repository. If it doesn't
1016
# exist yet they'll be added then. This implicitly copies them.
1274
1019
def add_inventory(self, revid, inv, parents):
1275
1020
self._ensure_real()
1276
1021
return self._real_repository.add_inventory(revid, inv, parents)
1278
1023
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1279
parents, basis_inv=None, propagate_caches=False):
1280
1025
self._ensure_real()
1281
1026
return self._real_repository.add_inventory_by_delta(basis_revision_id,
1282
delta, new_revision_id, parents, basis_inv=basis_inv,
1283
propagate_caches=propagate_caches)
1027
delta, new_revision_id, parents)
1285
1029
def add_revision(self, rev_id, rev, inv=None, config=None):
1286
1030
self._ensure_real()
1792
1501
def insert_stream(self, stream, src_format, resume_tokens):
1793
target = self.target_repo
1794
target._unstacked_provider.missing_keys.clear()
1795
candidate_calls = [('Repository.insert_stream_1.19', (1, 19))]
1796
if target._lock_token:
1797
candidate_calls.append(('Repository.insert_stream_locked', (1, 14)))
1798
lock_args = (target._lock_token or '',)
1800
candidate_calls.append(('Repository.insert_stream', (1, 13)))
1802
client = target._client
1502
repo = self.target_repo
1503
client = repo._client
1803
1504
medium = client._medium
1804
path = target.bzrdir._path_for_remote_call(client)
1805
# Probe for the verb to use with an empty stream before sending the
1806
# real stream to it. We do this both to avoid the risk of sending a
1807
# large request that is then rejected, and because we don't want to
1808
# implement a way to buffer, rewind, or restart the stream.
1810
for verb, required_version in candidate_calls:
1811
if medium._is_remote_before(required_version):
1814
# We've already done the probing (and set _is_remote_before) on
1815
# a previous insert.
1505
if medium._is_remote_before((1, 13)):
1506
# No possible way this can work.
1507
return self._insert_real(stream, src_format, resume_tokens)
1508
path = repo.bzrdir._path_for_remote_call(client)
1509
if not resume_tokens:
1510
# XXX: Ugly but important for correctness, *will* be fixed during
1511
# 1.13 cycle. Pushing a stream that is interrupted results in a
1512
# fallback to the _real_repositories sink *with a partial stream*.
1513
# Thats bad because we insert less data than bzr expected. To avoid
1514
# this we do a trial push to make sure the verb is accessible, and
1515
# do not fallback when actually pushing the stream. A cleanup patch
1516
# is going to look at rewinding/restarting the stream/partial
1818
1518
byte_stream = smart_repo._stream_to_byte_stream([], src_format)
1820
1520
response = client.call_with_body_stream(
1821
(verb, path, '') + lock_args, byte_stream)
1521
('Repository.insert_stream', path, ''), byte_stream)
1822
1522
except errors.UnknownSmartMethod:
1823
medium._remember_remote_is_before(required_version)
1829
return self._insert_real(stream, src_format, resume_tokens)
1830
self._last_inv_record = None
1831
self._last_substream = None
1832
if required_version < (1, 19):
1833
# Remote side doesn't support inventory deltas. Wrap the stream to
1834
# make sure we don't send any. If the stream contains inventory
1835
# deltas we'll interrupt the smart insert_stream request and
1837
stream = self._stop_stream_if_inventory_delta(stream)
1523
medium._remember_remote_is_before((1,13))
1524
return self._insert_real(stream, src_format, resume_tokens)
1838
1525
byte_stream = smart_repo._stream_to_byte_stream(
1839
1526
stream, src_format)
1840
1527
resume_tokens = ' '.join(resume_tokens)
1841
1528
response = client.call_with_body_stream(
1842
(verb, path, resume_tokens) + lock_args, byte_stream)
1529
('Repository.insert_stream', path, resume_tokens), byte_stream)
1843
1530
if response[0][0] not in ('ok', 'missing-basis'):
1844
1531
raise errors.UnexpectedSmartServerResponse(response)
1845
if self._last_substream is not None:
1846
# The stream included an inventory-delta record, but the remote
1847
# side isn't new enough to support them. So we need to send the
1848
# rest of the stream via VFS.
1849
self.target_repo.refresh_data()
1850
return self._resume_stream_with_vfs(response, src_format)
1851
1532
if response[0][0] == 'missing-basis':
1852
1533
tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])
1853
1534
resume_tokens = tokens
1854
return resume_tokens, set(missing_keys)
1535
return resume_tokens, missing_keys
1856
self.target_repo.refresh_data()
1537
if self.target_repo._real_repository is not None:
1538
collection = getattr(self.target_repo._real_repository,
1539
'_pack_collection', None)
1540
if collection is not None:
1541
collection.reload_pack_names()
1857
1542
return [], set()
1859
def _resume_stream_with_vfs(self, response, src_format):
1860
"""Resume sending a stream via VFS, first resending the record and
1861
substream that couldn't be sent via an insert_stream verb.
1863
if response[0][0] == 'missing-basis':
1864
tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])
1865
# Ignore missing_keys, we haven't finished inserting yet
1868
def resume_substream():
1869
# Yield the substream that was interrupted.
1870
for record in self._last_substream:
1872
self._last_substream = None
1873
def resume_stream():
1874
# Finish sending the interrupted substream
1875
yield ('inventory-deltas', resume_substream())
1876
# Then simply continue sending the rest of the stream.
1877
for substream_kind, substream in self._last_stream:
1878
yield substream_kind, substream
1879
return self._insert_real(resume_stream(), src_format, tokens)
1881
def _stop_stream_if_inventory_delta(self, stream):
1882
"""Normally this just lets the original stream pass-through unchanged.
1884
However if any 'inventory-deltas' substream occurs it will stop
1885
streaming, and store the interrupted substream and stream in
1886
self._last_substream and self._last_stream so that the stream can be
1887
resumed by _resume_stream_with_vfs.
1890
stream_iter = iter(stream)
1891
for substream_kind, substream in stream_iter:
1892
if substream_kind == 'inventory-deltas':
1893
self._last_substream = substream
1894
self._last_stream = stream_iter
1897
yield substream_kind, substream
1900
1545
class RemoteStreamSource(repository.StreamSource):
1901
1546
"""Stream data from a remote server."""
1903
1548
def get_stream(self, search):
1904
if (self.from_repository._fallback_repositories and
1905
self.to_format._fetch_order == 'topological'):
1906
return self._real_stream(self.from_repository, search)
1909
repos = [self.from_repository]
1915
repos.extend(repo._fallback_repositories)
1916
sources.append(repo)
1917
return self.missing_parents_chain(search, sources)
1919
def get_stream_for_missing_keys(self, missing_keys):
1920
self.from_repository._ensure_real()
1921
real_repo = self.from_repository._real_repository
1922
real_source = real_repo._get_source(self.to_format)
1923
return real_source.get_stream_for_missing_keys(missing_keys)
1925
def _real_stream(self, repo, search):
1926
"""Get a stream for search from repo.
1928
This never called RemoteStreamSource.get_stream, and is a heler
1929
for RemoteStreamSource._get_stream to allow getting a stream
1930
reliably whether fallback back because of old servers or trying
1931
to stream from a non-RemoteRepository (which the stacked support
1934
source = repo._get_source(self.to_format)
1935
if isinstance(source, RemoteStreamSource):
1937
source = repo._real_repository._get_source(self.to_format)
1938
return source.get_stream(search)
1940
def _get_stream(self, repo, search):
1941
"""Core worker to get a stream from repo for search.
1943
This is used by both get_stream and the stacking support logic. It
1944
deliberately gets a stream for repo which does not need to be
1945
self.from_repository. In the event that repo is not Remote, or
1946
cannot do a smart stream, a fallback is made to the generic
1947
repository._get_stream() interface, via self._real_stream.
1949
In the event of stacking, streams from _get_stream will not
1950
contain all the data for search - this is normal (see get_stream).
1952
:param repo: A repository.
1953
:param search: A search.
1955
# Fallbacks may be non-smart
1956
if not isinstance(repo, RemoteRepository):
1957
return self._real_stream(repo, search)
1549
# streaming with fallback repositories is not well defined yet: The
1550
# remote repository cannot see the fallback repositories, and thus
1551
# cannot satisfy the entire search in the general case. Likewise the
1552
# fallback repositories cannot reify the search to determine what they
1553
# should send. It likely needs a return value in the stream listing the
1554
# edge of the search to resume from in fallback repositories.
1555
if self.from_repository._fallback_repositories:
1556
return repository.StreamSource.get_stream(self, search)
1557
repo = self.from_repository
1958
1558
client = repo._client
1959
1559
medium = client._medium
1560
if medium._is_remote_before((1, 13)):
1561
# No possible way this can work.
1562
return repository.StreamSource.get_stream(self, search)
1960
1563
path = repo.bzrdir._path_for_remote_call(client)
1961
search_bytes = repo._serialise_search_result(search)
1962
args = (path, self.to_format.network_name())
1964
('Repository.get_stream_1.19', (1, 19)),
1965
('Repository.get_stream', (1, 13))]
1967
for verb, version in candidate_verbs:
1968
if medium._is_remote_before(version):
1971
response = repo._call_with_body_bytes_expecting_body(
1972
verb, args, search_bytes)
1973
except errors.UnknownSmartMethod:
1974
medium._remember_remote_is_before(version)
1976
response_tuple, response_handler = response
1980
return self._real_stream(repo, search)
1565
search_bytes = repo._serialise_search_result(search)
1566
response = repo._call_with_body_bytes_expecting_body(
1567
'Repository.get_stream',
1568
(path, self.to_format.network_name()), search_bytes)
1569
response_tuple, response_handler = response
1570
except errors.UnknownSmartMethod:
1571
medium._remember_remote_is_before((1,13))
1572
return repository.StreamSource.get_stream(self, search)
1981
1573
if response_tuple[0] != 'ok':
1982
1574
raise errors.UnexpectedSmartServerResponse(response_tuple)
1983
1575
byte_stream = response_handler.read_streamed_body()
1984
src_format, stream = smart_repo._byte_stream_to_stream(byte_stream,
1985
self._record_counter)
1576
src_format, stream = smart_repo._byte_stream_to_stream(byte_stream)
1986
1577
if src_format.network_name() != repo._format.network_name():
1987
1578
raise AssertionError(
1988
1579
"Mismatched RemoteRepository and stream src %r, %r" % (
1989
1580
src_format.network_name(), repo._format.network_name()))
1992
def missing_parents_chain(self, search, sources):
1993
"""Chain multiple streams together to handle stacking.
1995
:param search: The overall search to satisfy with streams.
1996
:param sources: A list of Repository objects to query.
1998
self.from_serialiser = self.from_repository._format._serializer
1999
self.seen_revs = set()
2000
self.referenced_revs = set()
2001
# If there are heads in the search, or the key count is > 0, we are not
2003
while not search.is_empty() and len(sources) > 1:
2004
source = sources.pop(0)
2005
stream = self._get_stream(source, search)
2006
for kind, substream in stream:
2007
if kind != 'revisions':
2008
yield kind, substream
2010
yield kind, self.missing_parents_rev_handler(substream)
2011
search = search.refine(self.seen_revs, self.referenced_revs)
2012
self.seen_revs = set()
2013
self.referenced_revs = set()
2014
if not search.is_empty():
2015
for kind, stream in self._get_stream(sources[0], search):
2018
def missing_parents_rev_handler(self, substream):
2019
for content in substream:
2020
revision_bytes = content.get_bytes_as('fulltext')
2021
revision = self.from_serialiser.read_revision_from_string(
2023
self.seen_revs.add(content.key[-1])
2024
self.referenced_revs.update(revision.parent_ids)
2028
1584
class RemoteBranchLockableFiles(LockableFiles):
2029
1585
"""A 'LockableFiles' implementation that talks to a smart server.
2739
2226
return self._real_branch.set_push_location(location)
2742
class RemoteConfig(object):
2743
"""A Config that reads and writes from smart verbs.
2745
It is a low-level object that considers config data to be name/value pairs
2746
that may be associated with a section. Assigning meaning to the these
2747
values is done at higher levels like bzrlib.config.TreeConfig.
2750
def get_option(self, name, section=None, default=None):
2751
"""Return the value associated with a named option.
2753
:param name: The name of the value
2754
:param section: The section the option is in (if any)
2755
:param default: The value to return if the value is not set
2756
:return: The value or default value
2759
configobj = self._get_configobj()
2761
section_obj = configobj
2764
section_obj = configobj[section]
2767
return section_obj.get(name, default)
2768
except errors.UnknownSmartMethod:
2769
return self._vfs_get_option(name, section, default)
2771
def _response_to_configobj(self, response):
2772
if len(response[0]) and response[0][0] != 'ok':
2773
raise errors.UnexpectedSmartServerResponse(response)
2774
lines = response[1].read_body_bytes().splitlines()
2775
return config.ConfigObj(lines, encoding='utf-8')
2778
class RemoteBranchConfig(RemoteConfig):
2779
"""A RemoteConfig for Branches."""
2781
def __init__(self, branch):
2782
self._branch = branch
2784
def _get_configobj(self):
2785
path = self._branch._remote_path()
2786
response = self._branch._client.call_expecting_body(
2787
'Branch.get_config_file', path)
2788
return self._response_to_configobj(response)
2790
def set_option(self, value, name, section=None):
2791
"""Set the value associated with a named option.
2793
:param value: The value to set
2794
:param name: The name of the value to set
2795
:param section: The section the option is in (if any)
2797
medium = self._branch._client._medium
2798
if medium._is_remote_before((1, 14)):
2799
return self._vfs_set_option(value, name, section)
2800
if isinstance(value, dict):
2801
if medium._is_remote_before((2, 2)):
2802
return self._vfs_set_option(value, name, section)
2803
return self._set_config_option_dict(value, name, section)
2805
return self._set_config_option(value, name, section)
2807
def _set_config_option(self, value, name, section):
2809
path = self._branch._remote_path()
2810
response = self._branch._client.call('Branch.set_config_option',
2811
path, self._branch._lock_token, self._branch._repo_lock_token,
2812
value.encode('utf8'), name, section or '')
2813
except errors.UnknownSmartMethod:
2814
medium = self._branch._client._medium
2815
medium._remember_remote_is_before((1, 14))
2816
return self._vfs_set_option(value, name, section)
2818
raise errors.UnexpectedSmartServerResponse(response)
2820
def _serialize_option_dict(self, option_dict):
2822
for key, value in option_dict.items():
2823
if isinstance(key, unicode):
2824
key = key.encode('utf8')
2825
if isinstance(value, unicode):
2826
value = value.encode('utf8')
2827
utf8_dict[key] = value
2828
return bencode.bencode(utf8_dict)
2830
def _set_config_option_dict(self, value, name, section):
2832
path = self._branch._remote_path()
2833
serialised_dict = self._serialize_option_dict(value)
2834
response = self._branch._client.call(
2835
'Branch.set_config_option_dict',
2836
path, self._branch._lock_token, self._branch._repo_lock_token,
2837
serialised_dict, name, section or '')
2838
except errors.UnknownSmartMethod:
2839
medium = self._branch._client._medium
2840
medium._remember_remote_is_before((2, 2))
2841
return self._vfs_set_option(value, name, section)
2843
raise errors.UnexpectedSmartServerResponse(response)
2845
def _real_object(self):
2846
self._branch._ensure_real()
2847
return self._branch._real_branch
2849
def _vfs_set_option(self, value, name, section=None):
2850
return self._real_object()._get_config().set_option(
2851
value, name, section)
2854
class RemoteBzrDirConfig(RemoteConfig):
2855
"""A RemoteConfig for BzrDirs."""
2857
def __init__(self, bzrdir):
2858
self._bzrdir = bzrdir
2860
def _get_configobj(self):
2861
medium = self._bzrdir._client._medium
2862
verb = 'BzrDir.get_config_file'
2863
if medium._is_remote_before((1, 15)):
2864
raise errors.UnknownSmartMethod(verb)
2865
path = self._bzrdir._path_for_remote_call(self._bzrdir._client)
2866
response = self._bzrdir._call_expecting_body(
2868
return self._response_to_configobj(response)
2870
def _vfs_get_option(self, name, section, default):
2871
return self._real_object()._get_config().get_option(
2872
name, section, default)
2874
def set_option(self, value, name, section=None):
2875
"""Set the value associated with a named option.
2877
:param value: The value to set
2878
:param name: The name of the value to set
2879
:param section: The section the option is in (if any)
2881
return self._real_object()._get_config().set_option(
2882
value, name, section)
2884
def _real_object(self):
2885
self._bzrdir._ensure_real()
2886
return self._bzrdir._real_bzrdir
2890
2229
def _extract_tar(tar, to_dir):
2891
2230
"""Extract all the contents of a tarfile object.