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  • Committer: Martin Pool
  • Date: 2009-06-19 09:06:56 UTC
  • mfrom: (4463 +trunk)
  • mto: This revision was merged to the branch mainline in revision 4464.
  • Revision ID: mbp@sourcefrog.net-20090619090656-d5weqeecyscv8kqp
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bzrlib/remote.py
1
 
# Copyright (C) 2006-2010 Canonical Ltd
 
1
# Copyright (C) 2006, 2007, 2008 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16
16
 
 
17
# TODO: At some point, handle upgrades by just passing the whole request
 
18
# across to run on the server.
 
19
 
17
20
import bz2
18
21
 
19
22
from bzrlib import (
24
27
    debug,
25
28
    errors,
26
29
    graph,
27
 
    lock,
28
30
    lockdir,
29
31
    repository,
30
 
    repository as _mod_repository,
31
32
    revision,
32
33
    revision as _mod_revision,
33
 
    static_tuple,
34
34
    symbol_versioning,
35
35
)
36
36
from bzrlib.branch import BranchReferenceFormat
37
37
from bzrlib.bzrdir import BzrDir, RemoteBzrDirFormat
38
 
from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
 
38
from bzrlib.decorators import needs_read_lock, needs_write_lock
39
39
from bzrlib.errors import (
40
40
    NoSuchRevision,
41
41
    SmartProtocolError,
61
61
        except errors.ErrorFromSmartServer, err:
62
62
            self._translate_error(err, **err_context)
63
63
 
64
 
    def _call_with_body_bytes(self, method, args, body_bytes, **err_context):
65
 
        try:
66
 
            return self._client.call_with_body_bytes(method, args, body_bytes)
67
 
        except errors.ErrorFromSmartServer, err:
68
 
            self._translate_error(err, **err_context)
69
 
 
70
64
    def _call_with_body_bytes_expecting_body(self, method, args, body_bytes,
71
65
                                             **err_context):
72
66
        try:
91
85
class RemoteBzrDir(BzrDir, _RpcHelper):
92
86
    """Control directory on a remote server, accessed via bzr:// or similar."""
93
87
 
94
 
    def __init__(self, transport, format, _client=None, _force_probe=False):
 
88
    def __init__(self, transport, format, _client=None):
95
89
        """Construct a RemoteBzrDir.
96
90
 
97
91
        :param _client: Private parameter for testing. Disables probing and the
101
95
        # this object holds a delegated bzrdir that uses file-level operations
102
96
        # to talk to the other side
103
97
        self._real_bzrdir = None
104
 
        self._has_working_tree = None
105
98
        # 1-shot cache for the call pattern 'create_branch; open_branch' - see
106
99
        # create_branch for details.
107
100
        self._next_open_branch_result = None
111
104
            self._client = client._SmartClient(medium)
112
105
        else:
113
106
            self._client = _client
114
 
            if not _force_probe:
115
 
                return
116
 
 
117
 
        self._probe_bzrdir()
118
 
 
119
 
    def __repr__(self):
120
 
        return '%s(%r)' % (self.__class__.__name__, self._client)
121
 
 
122
 
    def _probe_bzrdir(self):
123
 
        medium = self._client._medium
 
107
            return
 
108
 
124
109
        path = self._path_for_remote_call(self._client)
125
 
        if medium._is_remote_before((2, 1)):
126
 
            self._rpc_open(path)
127
 
            return
128
 
        try:
129
 
            self._rpc_open_2_1(path)
130
 
            return
131
 
        except errors.UnknownSmartMethod:
132
 
            medium._remember_remote_is_before((2, 1))
133
 
            self._rpc_open(path)
134
 
 
135
 
    def _rpc_open_2_1(self, path):
136
 
        response = self._call('BzrDir.open_2.1', path)
137
 
        if response == ('no',):
138
 
            raise errors.NotBranchError(path=self.root_transport.base)
139
 
        elif response[0] == 'yes':
140
 
            if response[1] == 'yes':
141
 
                self._has_working_tree = True
142
 
            elif response[1] == 'no':
143
 
                self._has_working_tree = False
144
 
            else:
145
 
                raise errors.UnexpectedSmartServerResponse(response)
146
 
        else:
147
 
            raise errors.UnexpectedSmartServerResponse(response)
148
 
 
149
 
    def _rpc_open(self, path):
150
110
        response = self._call('BzrDir.open', path)
151
111
        if response not in [('yes',), ('no',)]:
152
112
            raise errors.UnexpectedSmartServerResponse(response)
153
113
        if response == ('no',):
154
 
            raise errors.NotBranchError(path=self.root_transport.base)
 
114
            raise errors.NotBranchError(path=transport.base)
155
115
 
156
116
    def _ensure_real(self):
157
117
        """Ensure that there is a _real_bzrdir set.
159
119
        Used before calls to self._real_bzrdir.
160
120
        """
161
121
        if not self._real_bzrdir:
162
 
            if 'hpssvfs' in debug.debug_flags:
163
 
                import traceback
164
 
                warning('VFS BzrDir access triggered\n%s',
165
 
                    ''.join(traceback.format_stack()))
166
122
            self._real_bzrdir = BzrDir.open_from_transport(
167
123
                self.root_transport, _server_formats=False)
168
124
            self._format._network_name = \
244
200
        self._ensure_real()
245
201
        self._real_bzrdir.destroy_repository()
246
202
 
247
 
    def create_branch(self, name=None):
 
203
    def create_branch(self):
248
204
        # as per meta1 formats - just delegate to the format object which may
249
205
        # be parameterised.
250
 
        real_branch = self._format.get_branch_format().initialize(self,
251
 
            name=name)
 
206
        real_branch = self._format.get_branch_format().initialize(self)
252
207
        if not isinstance(real_branch, RemoteBranch):
253
 
            result = RemoteBranch(self, self.find_repository(), real_branch,
254
 
                                  name=name)
 
208
            result = RemoteBranch(self, self.find_repository(), real_branch)
255
209
        else:
256
210
            result = real_branch
257
211
        # BzrDir.clone_on_transport() uses the result of create_branch but does
263
217
        self._next_open_branch_result = result
264
218
        return result
265
219
 
266
 
    def destroy_branch(self, name=None):
 
220
    def destroy_branch(self):
267
221
        """See BzrDir.destroy_branch"""
268
222
        self._ensure_real()
269
 
        self._real_bzrdir.destroy_branch(name=name)
 
223
        self._real_bzrdir.destroy_branch()
270
224
        self._next_open_branch_result = None
271
225
 
272
226
    def create_workingtree(self, revision_id=None, from_branch=None):
291
245
    def _get_branch_reference(self):
292
246
        path = self._path_for_remote_call(self._client)
293
247
        medium = self._client._medium
294
 
        candidate_calls = [
295
 
            ('BzrDir.open_branchV3', (2, 1)),
296
 
            ('BzrDir.open_branchV2', (1, 13)),
297
 
            ('BzrDir.open_branch', None),
298
 
            ]
299
 
        for verb, required_version in candidate_calls:
300
 
            if required_version and medium._is_remote_before(required_version):
301
 
                continue
 
248
        if not medium._is_remote_before((1, 13)):
302
249
            try:
303
 
                response = self._call(verb, path)
 
250
                response = self._call('BzrDir.open_branchV2', path)
 
251
                if response[0] not in ('ref', 'branch'):
 
252
                    raise errors.UnexpectedSmartServerResponse(response)
 
253
                return response
304
254
            except errors.UnknownSmartMethod:
305
 
                if required_version is None:
306
 
                    raise
307
 
                medium._remember_remote_is_before(required_version)
308
 
            else:
309
 
                break
310
 
        if verb == 'BzrDir.open_branch':
311
 
            if response[0] != 'ok':
312
 
                raise errors.UnexpectedSmartServerResponse(response)
313
 
            if response[1] != '':
314
 
                return ('ref', response[1])
315
 
            else:
316
 
                return ('branch', '')
317
 
        if response[0] not in ('ref', 'branch'):
 
255
                medium._remember_remote_is_before((1, 13))
 
256
        response = self._call('BzrDir.open_branch', path)
 
257
        if response[0] != 'ok':
318
258
            raise errors.UnexpectedSmartServerResponse(response)
319
 
        return response
 
259
        if response[1] != '':
 
260
            return ('ref', response[1])
 
261
        else:
 
262
            return ('branch', '')
320
263
 
321
264
    def _get_tree_branch(self):
322
265
        """See BzrDir._get_tree_branch()."""
323
266
        return None, self.open_branch()
324
267
 
325
 
    def open_branch(self, name=None, unsupported=False,
326
 
                    ignore_fallbacks=False):
327
 
        if unsupported:
 
268
    def open_branch(self, _unsupported=False, ignore_fallbacks=False):
 
269
        if _unsupported:
328
270
            raise NotImplementedError('unsupported flag support not implemented yet.')
329
271
        if self._next_open_branch_result is not None:
330
272
            # See create_branch for details.
335
277
        if response[0] == 'ref':
336
278
            # a branch reference, use the existing BranchReference logic.
337
279
            format = BranchReferenceFormat()
338
 
            return format.open(self, name=name, _found=True,
339
 
                location=response[1], ignore_fallbacks=ignore_fallbacks)
 
280
            return format.open(self, _found=True, location=response[1],
 
281
                ignore_fallbacks=ignore_fallbacks)
340
282
        branch_format_name = response[1]
341
283
        if not branch_format_name:
342
284
            branch_format_name = None
343
285
        format = RemoteBranchFormat(network_name=branch_format_name)
344
286
        return RemoteBranch(self, self.find_repository(), format=format,
345
 
            setup_stacking=not ignore_fallbacks, name=name)
 
287
            setup_stacking=not ignore_fallbacks)
346
288
 
347
289
    def _open_repo_v1(self, path):
348
290
        verb = 'BzrDir.find_repository'
409
351
        else:
410
352
            raise errors.NoRepositoryPresent(self)
411
353
 
412
 
    def has_workingtree(self):
413
 
        if self._has_working_tree is None:
414
 
            self._ensure_real()
415
 
            self._has_working_tree = self._real_bzrdir.has_workingtree()
416
 
        return self._has_working_tree
417
 
 
418
354
    def open_workingtree(self, recommend_upgrade=True):
419
 
        if self.has_workingtree():
 
355
        self._ensure_real()
 
356
        if self._real_bzrdir.has_workingtree():
420
357
            raise errors.NotLocalUrl(self.root_transport)
421
358
        else:
422
359
            raise errors.NoWorkingTree(self.root_transport.base)
425
362
        """Return the path to be used for this bzrdir in a remote call."""
426
363
        return client.remote_path_from_transport(self.root_transport)
427
364
 
428
 
    def get_branch_transport(self, branch_format, name=None):
 
365
    def get_branch_transport(self, branch_format):
429
366
        self._ensure_real()
430
 
        return self._real_bzrdir.get_branch_transport(branch_format, name=name)
 
367
        return self._real_bzrdir.get_branch_transport(branch_format)
431
368
 
432
369
    def get_repository_transport(self, repository_format):
433
370
        self._ensure_real()
485
422
        self._custom_format = None
486
423
        self._network_name = None
487
424
        self._creating_bzrdir = None
488
 
        self._supports_chks = None
489
425
        self._supports_external_lookups = None
490
426
        self._supports_tree_reference = None
491
427
        self._rich_root_data = None
492
428
 
493
 
    def __repr__(self):
494
 
        return "%s(_network_name=%r)" % (self.__class__.__name__,
495
 
            self._network_name)
496
 
 
497
429
    @property
498
430
    def fast_deltas(self):
499
431
        self._ensure_real()
507
439
        return self._rich_root_data
508
440
 
509
441
    @property
510
 
    def supports_chks(self):
511
 
        if self._supports_chks is None:
512
 
            self._ensure_real()
513
 
            self._supports_chks = self._custom_format.supports_chks
514
 
        return self._supports_chks
515
 
 
516
 
    @property
517
442
    def supports_external_lookups(self):
518
443
        if self._supports_external_lookups is None:
519
444
            self._ensure_real()
620
545
        return self._custom_format._fetch_reconcile
621
546
 
622
547
    def get_format_description(self):
623
 
        self._ensure_real()
624
 
        return 'Remote: ' + self._custom_format.get_format_description()
 
548
        return 'bzr remote repository'
625
549
 
626
550
    def __eq__(self, other):
627
551
        return self.__class__ is other.__class__
628
552
 
 
553
    def check_conversion_target(self, target_format):
 
554
        if self.rich_root_data and not target_format.rich_root_data:
 
555
            raise errors.BadConversionTarget(
 
556
                'Does not support rich root data.', target_format)
 
557
        if (self.supports_tree_reference and
 
558
            not getattr(target_format, 'supports_tree_reference', False)):
 
559
            raise errors.BadConversionTarget(
 
560
                'Does not support nested trees', target_format)
 
561
 
629
562
    def network_name(self):
630
563
        if self._network_name:
631
564
            return self._network_name
633
566
        return self._creating_repo._real_repository._format.network_name()
634
567
 
635
568
    @property
636
 
    def pack_compresses(self):
637
 
        self._ensure_real()
638
 
        return self._custom_format.pack_compresses
639
 
 
640
 
    @property
641
569
    def _serializer(self):
642
570
        self._ensure_real()
643
571
        return self._custom_format._serializer
644
572
 
645
573
 
646
 
class RemoteRepository(_RpcHelper, lock._RelockDebugMixin,
647
 
    bzrdir.ControlComponent):
 
574
class RemoteRepository(_RpcHelper):
648
575
    """Repository accessed over rpc.
649
576
 
650
577
    For the moment most operations are performed using local transport-backed
693
620
        # Additional places to query for data.
694
621
        self._fallback_repositories = []
695
622
 
696
 
    @property
697
 
    def user_transport(self):
698
 
        return self.bzrdir.user_transport
699
 
 
700
 
    @property
701
 
    def control_transport(self):
702
 
        # XXX: Normally you shouldn't directly get at the remote repository
703
 
        # transport, but I'm not sure it's worth making this method
704
 
        # optional -- mbp 2010-04-21
705
 
        return self.bzrdir.get_repository_transport(None)
706
 
        
707
623
    def __str__(self):
708
624
        return "%s(%s)" % (self.__class__.__name__, self.base)
709
625
 
802
718
        invocation. If in doubt chat to the bzr network team.
803
719
        """
804
720
        if self._real_repository is None:
805
 
            if 'hpssvfs' in debug.debug_flags:
 
721
            if 'hpss' in debug.debug_flags:
806
722
                import traceback
807
723
                warning('VFS Repository access triggered\n%s',
808
724
                    ''.join(traceback.format_stack()))
892
808
            result.add(_mod_revision.NULL_REVISION)
893
809
        return result
894
810
 
895
 
    def _has_same_fallbacks(self, other_repo):
896
 
        """Returns true if the repositories have the same fallbacks."""
897
 
        # XXX: copied from Repository; it should be unified into a base class
898
 
        # <https://bugs.edge.launchpad.net/bzr/+bug/401622>
899
 
        my_fb = self._fallback_repositories
900
 
        other_fb = other_repo._fallback_repositories
901
 
        if len(my_fb) != len(other_fb):
902
 
            return False
903
 
        for f, g in zip(my_fb, other_fb):
904
 
            if not f.has_same_location(g):
905
 
                return False
906
 
        return True
907
 
 
908
811
    def has_same_location(self, other):
909
 
        # TODO: Move to RepositoryBase and unify with the regular Repository
910
 
        # one; unfortunately the tests rely on slightly different behaviour at
911
 
        # present -- mbp 20090710
912
812
        return (self.__class__ is other.__class__ and
913
813
                self.bzrdir.transport.base == other.bzrdir.transport.base)
914
814
 
917
817
        parents_provider = self._make_parents_provider(other_repository)
918
818
        return graph.Graph(parents_provider)
919
819
 
920
 
    @needs_read_lock
921
 
    def get_known_graph_ancestry(self, revision_ids):
922
 
        """Return the known graph for a set of revision ids and their ancestors.
923
 
        """
924
 
        st = static_tuple.StaticTuple
925
 
        revision_keys = [st(r_id).intern() for r_id in revision_ids]
926
 
        known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
927
 
        return graph.GraphThunkIdsToKeys(known_graph)
928
 
 
929
820
    def gather_stats(self, revid=None, committers=None):
930
821
        """See Repository.gather_stats()."""
931
822
        path = self.bzrdir._path_for_remote_call(self._client)
991
882
    def is_write_locked(self):
992
883
        return self._lock_mode == 'w'
993
884
 
994
 
    def _warn_if_deprecated(self, branch=None):
995
 
        # If we have a real repository, the check will be done there, if we
996
 
        # don't the check will be done remotely.
997
 
        pass
998
 
 
999
885
    def lock_read(self):
1000
886
        # wrong eventually - want a local lock cache context
1001
887
        if not self._lock_mode:
1002
 
            self._note_lock('r')
1003
888
            self._lock_mode = 'r'
1004
889
            self._lock_count = 1
1005
890
            self._unstacked_provider.enable_cache(cache_misses=True)
1025
910
 
1026
911
    def lock_write(self, token=None, _skip_rpc=False):
1027
912
        if not self._lock_mode:
1028
 
            self._note_lock('w')
1029
913
            if _skip_rpc:
1030
914
                if self._lock_token is not None:
1031
915
                    if token != self._lock_token:
1134
1018
        else:
1135
1019
            raise errors.UnexpectedSmartServerResponse(response)
1136
1020
 
1137
 
    @only_raises(errors.LockNotHeld, errors.LockBroken)
1138
1021
    def unlock(self):
1139
1022
        if not self._lock_count:
1140
 
            return lock.cant_unlock_not_held(self)
 
1023
            raise errors.LockNotHeld(self)
1141
1024
        self._lock_count -= 1
1142
1025
        if self._lock_count > 0:
1143
1026
            return
1240
1123
            # state, so always add a lock here. If a caller passes us a locked
1241
1124
            # repository, they are responsible for unlocking it later.
1242
1125
            repository.lock_read()
1243
 
        self._check_fallback_repository(repository)
1244
1126
        self._fallback_repositories.append(repository)
1245
1127
        # If self._real_repository was parameterised already (e.g. because a
1246
1128
        # _real_branch had its get_stacked_on_url method called), then the
1247
1129
        # repository to be added may already be in the _real_repositories list.
1248
1130
        if self._real_repository is not None:
1249
 
            fallback_locations = [repo.user_url for repo in
 
1131
            fallback_locations = [repo.bzrdir.root_transport.base for repo in
1250
1132
                self._real_repository._fallback_repositories]
1251
 
            if repository.user_url not in fallback_locations:
 
1133
            if repository.bzrdir.root_transport.base not in fallback_locations:
1252
1134
                self._real_repository.add_fallback_repository(repository)
1253
1135
 
1254
 
    def _check_fallback_repository(self, repository):
1255
 
        """Check that this repository can fallback to repository safely.
1256
 
 
1257
 
        Raise an error if not.
1258
 
 
1259
 
        :param repository: A repository to fallback to.
1260
 
        """
1261
 
        return _mod_repository.InterRepository._assert_same_model(
1262
 
            self, repository)
1263
 
 
1264
1136
    def add_inventory(self, revid, inv, parents):
1265
1137
        self._ensure_real()
1266
1138
        return self._real_repository.add_inventory(revid, inv, parents)
1267
1139
 
1268
1140
    def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1269
 
            parents, basis_inv=None, propagate_caches=False):
 
1141
                               parents):
1270
1142
        self._ensure_real()
1271
1143
        return self._real_repository.add_inventory_by_delta(basis_revision_id,
1272
 
            delta, new_revision_id, parents, basis_inv=basis_inv,
1273
 
            propagate_caches=propagate_caches)
 
1144
            delta, new_revision_id, parents)
1274
1145
 
1275
1146
    def add_revision(self, rev_id, rev, inv=None, config=None):
1276
1147
        self._ensure_real()
1282
1153
        self._ensure_real()
1283
1154
        return self._real_repository.get_inventory(revision_id)
1284
1155
 
1285
 
    def iter_inventories(self, revision_ids, ordering=None):
 
1156
    def iter_inventories(self, revision_ids):
1286
1157
        self._ensure_real()
1287
 
        return self._real_repository.iter_inventories(revision_ids, ordering)
 
1158
        return self._real_repository.iter_inventories(revision_ids)
1288
1159
 
1289
1160
    @needs_read_lock
1290
1161
    def get_revision(self, revision_id):
1354
1225
            raise errors.InternalBzrError(
1355
1226
                "May not fetch while in a write group.")
1356
1227
        # fast path same-url fetch operations
1357
 
        if (self.has_same_location(source)
1358
 
            and fetch_spec is None
1359
 
            and self._has_same_fallbacks(source)):
 
1228
        if self.has_same_location(source) and fetch_spec is None:
1360
1229
            # check that last_revision is in 'from' and then return a
1361
1230
            # no-operation.
1362
1231
            if (revision_id is not None and
1535
1404
        return self._real_repository.get_signature_text(revision_id)
1536
1405
 
1537
1406
    @needs_read_lock
1538
 
    def _get_inventory_xml(self, revision_id):
1539
 
        self._ensure_real()
1540
 
        return self._real_repository._get_inventory_xml(revision_id)
 
1407
    def get_inventory_xml(self, revision_id):
 
1408
        self._ensure_real()
 
1409
        return self._real_repository.get_inventory_xml(revision_id)
 
1410
 
 
1411
    def deserialise_inventory(self, revision_id, xml):
 
1412
        self._ensure_real()
 
1413
        return self._real_repository.deserialise_inventory(revision_id, xml)
1541
1414
 
1542
1415
    def reconcile(self, other=None, thorough=False):
1543
1416
        self._ensure_real()
1570
1443
        return self._real_repository.get_revision_reconcile(revision_id)
1571
1444
 
1572
1445
    @needs_read_lock
1573
 
    def check(self, revision_ids=None, callback_refs=None, check_repo=True):
 
1446
    def check(self, revision_ids=None):
1574
1447
        self._ensure_real()
1575
 
        return self._real_repository.check(revision_ids=revision_ids,
1576
 
            callback_refs=callback_refs, check_repo=check_repo)
 
1448
        return self._real_repository.check(revision_ids=revision_ids)
1577
1449
 
1578
1450
    def copy_content_into(self, destination, revision_id=None):
1579
1451
        self._ensure_real()
1619
1491
        return self._real_repository.inventories
1620
1492
 
1621
1493
    @needs_write_lock
1622
 
    def pack(self, hint=None, clean_obsolete_packs=False):
 
1494
    def pack(self):
1623
1495
        """Compress the data within the repository.
1624
1496
 
1625
1497
        This is not currently implemented within the smart server.
1626
1498
        """
1627
1499
        self._ensure_real()
1628
 
        return self._real_repository.pack(hint=hint, clean_obsolete_packs=clean_obsolete_packs)
 
1500
        return self._real_repository.pack()
1629
1501
 
1630
1502
    @property
1631
1503
    def revisions(self):
1719
1591
        self._ensure_real()
1720
1592
        return self._real_repository.revision_graph_can_have_wrong_parents()
1721
1593
 
1722
 
    def _find_inconsistent_revision_parents(self, revisions_iterator=None):
 
1594
    def _find_inconsistent_revision_parents(self):
1723
1595
        self._ensure_real()
1724
 
        return self._real_repository._find_inconsistent_revision_parents(
1725
 
            revisions_iterator)
 
1596
        return self._real_repository._find_inconsistent_revision_parents()
1726
1597
 
1727
1598
    def _check_for_inconsistent_revision_parents(self):
1728
1599
        self._ensure_real()
1782
1653
    def insert_stream(self, stream, src_format, resume_tokens):
1783
1654
        target = self.target_repo
1784
1655
        target._unstacked_provider.missing_keys.clear()
1785
 
        candidate_calls = [('Repository.insert_stream_1.19', (1, 19))]
1786
1656
        if target._lock_token:
1787
 
            candidate_calls.append(('Repository.insert_stream_locked', (1, 14)))
1788
 
            lock_args = (target._lock_token or '',)
 
1657
            verb = 'Repository.insert_stream_locked'
 
1658
            extra_args = (target._lock_token or '',)
 
1659
            required_version = (1, 14)
1789
1660
        else:
1790
 
            candidate_calls.append(('Repository.insert_stream', (1, 13)))
1791
 
            lock_args = ()
 
1661
            verb = 'Repository.insert_stream'
 
1662
            extra_args = ()
 
1663
            required_version = (1, 13)
1792
1664
        client = target._client
1793
1665
        medium = client._medium
 
1666
        if medium._is_remote_before(required_version):
 
1667
            # No possible way this can work.
 
1668
            return self._insert_real(stream, src_format, resume_tokens)
1794
1669
        path = target.bzrdir._path_for_remote_call(client)
1795
 
        # Probe for the verb to use with an empty stream before sending the
1796
 
        # real stream to it.  We do this both to avoid the risk of sending a
1797
 
        # large request that is then rejected, and because we don't want to
1798
 
        # implement a way to buffer, rewind, or restart the stream.
1799
 
        found_verb = False
1800
 
        for verb, required_version in candidate_calls:
1801
 
            if medium._is_remote_before(required_version):
1802
 
                continue
1803
 
            if resume_tokens:
1804
 
                # We've already done the probing (and set _is_remote_before) on
1805
 
                # a previous insert.
1806
 
                found_verb = True
1807
 
                break
 
1670
        if not resume_tokens:
 
1671
            # XXX: Ugly but important for correctness, *will* be fixed during
 
1672
            # 1.13 cycle. Pushing a stream that is interrupted results in a
 
1673
            # fallback to the _real_repositories sink *with a partial stream*.
 
1674
            # Thats bad because we insert less data than bzr expected. To avoid
 
1675
            # this we do a trial push to make sure the verb is accessible, and
 
1676
            # do not fallback when actually pushing the stream. A cleanup patch
 
1677
            # is going to look at rewinding/restarting the stream/partial
 
1678
            # buffering etc.
1808
1679
            byte_stream = smart_repo._stream_to_byte_stream([], src_format)
1809
1680
            try:
1810
1681
                response = client.call_with_body_stream(
1811
 
                    (verb, path, '') + lock_args, byte_stream)
 
1682
                    (verb, path, '') + extra_args, byte_stream)
1812
1683
            except errors.UnknownSmartMethod:
1813
1684
                medium._remember_remote_is_before(required_version)
1814
 
            else:
1815
 
                found_verb = True
1816
 
                break
1817
 
        if not found_verb:
1818
 
            # Have to use VFS.
1819
 
            return self._insert_real(stream, src_format, resume_tokens)
1820
 
        self._last_inv_record = None
1821
 
        self._last_substream = None
1822
 
        if required_version < (1, 19):
1823
 
            # Remote side doesn't support inventory deltas.  Wrap the stream to
1824
 
            # make sure we don't send any.  If the stream contains inventory
1825
 
            # deltas we'll interrupt the smart insert_stream request and
1826
 
            # fallback to VFS.
1827
 
            stream = self._stop_stream_if_inventory_delta(stream)
 
1685
                return self._insert_real(stream, src_format, resume_tokens)
1828
1686
        byte_stream = smart_repo._stream_to_byte_stream(
1829
1687
            stream, src_format)
1830
1688
        resume_tokens = ' '.join(resume_tokens)
1831
1689
        response = client.call_with_body_stream(
1832
 
            (verb, path, resume_tokens) + lock_args, byte_stream)
 
1690
            (verb, path, resume_tokens) + extra_args, byte_stream)
1833
1691
        if response[0][0] not in ('ok', 'missing-basis'):
1834
1692
            raise errors.UnexpectedSmartServerResponse(response)
1835
 
        if self._last_substream is not None:
1836
 
            # The stream included an inventory-delta record, but the remote
1837
 
            # side isn't new enough to support them.  So we need to send the
1838
 
            # rest of the stream via VFS.
1839
 
            self.target_repo.refresh_data()
1840
 
            return self._resume_stream_with_vfs(response, src_format)
1841
1693
        if response[0][0] == 'missing-basis':
1842
1694
            tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])
1843
1695
            resume_tokens = tokens
1846
1698
            self.target_repo.refresh_data()
1847
1699
            return [], set()
1848
1700
 
1849
 
    def _resume_stream_with_vfs(self, response, src_format):
1850
 
        """Resume sending a stream via VFS, first resending the record and
1851
 
        substream that couldn't be sent via an insert_stream verb.
1852
 
        """
1853
 
        if response[0][0] == 'missing-basis':
1854
 
            tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])
1855
 
            # Ignore missing_keys, we haven't finished inserting yet
1856
 
        else:
1857
 
            tokens = []
1858
 
        def resume_substream():
1859
 
            # Yield the substream that was interrupted.
1860
 
            for record in self._last_substream:
1861
 
                yield record
1862
 
            self._last_substream = None
1863
 
        def resume_stream():
1864
 
            # Finish sending the interrupted substream
1865
 
            yield ('inventory-deltas', resume_substream())
1866
 
            # Then simply continue sending the rest of the stream.
1867
 
            for substream_kind, substream in self._last_stream:
1868
 
                yield substream_kind, substream
1869
 
        return self._insert_real(resume_stream(), src_format, tokens)
1870
 
 
1871
 
    def _stop_stream_if_inventory_delta(self, stream):
1872
 
        """Normally this just lets the original stream pass-through unchanged.
1873
 
 
1874
 
        However if any 'inventory-deltas' substream occurs it will stop
1875
 
        streaming, and store the interrupted substream and stream in
1876
 
        self._last_substream and self._last_stream so that the stream can be
1877
 
        resumed by _resume_stream_with_vfs.
1878
 
        """
1879
 
                    
1880
 
        stream_iter = iter(stream)
1881
 
        for substream_kind, substream in stream_iter:
1882
 
            if substream_kind == 'inventory-deltas':
1883
 
                self._last_substream = substream
1884
 
                self._last_stream = stream_iter
1885
 
                return
1886
 
            else:
1887
 
                yield substream_kind, substream
1888
 
            
1889
1701
 
1890
1702
class RemoteStreamSource(repository.StreamSource):
1891
1703
    """Stream data from a remote server."""
1894
1706
        if (self.from_repository._fallback_repositories and
1895
1707
            self.to_format._fetch_order == 'topological'):
1896
1708
            return self._real_stream(self.from_repository, search)
1897
 
        sources = []
1898
 
        seen = set()
1899
 
        repos = [self.from_repository]
1900
 
        while repos:
1901
 
            repo = repos.pop(0)
1902
 
            if repo in seen:
1903
 
                continue
1904
 
            seen.add(repo)
1905
 
            repos.extend(repo._fallback_repositories)
1906
 
            sources.append(repo)
1907
 
        return self.missing_parents_chain(search, sources)
1908
 
 
1909
 
    def get_stream_for_missing_keys(self, missing_keys):
1910
 
        self.from_repository._ensure_real()
1911
 
        real_repo = self.from_repository._real_repository
1912
 
        real_source = real_repo._get_source(self.to_format)
1913
 
        return real_source.get_stream_for_missing_keys(missing_keys)
 
1709
        return self.missing_parents_chain(search, [self.from_repository] +
 
1710
            self.from_repository._fallback_repositories)
1914
1711
 
1915
1712
    def _real_stream(self, repo, search):
1916
1713
        """Get a stream for search from repo.
1923
1720
        """
1924
1721
        source = repo._get_source(self.to_format)
1925
1722
        if isinstance(source, RemoteStreamSource):
1926
 
            repo._ensure_real()
1927
 
            source = repo._real_repository._get_source(self.to_format)
 
1723
            return repository.StreamSource.get_stream(source, search)
1928
1724
        return source.get_stream(search)
1929
1725
 
1930
1726
    def _get_stream(self, repo, search):
1947
1743
            return self._real_stream(repo, search)
1948
1744
        client = repo._client
1949
1745
        medium = client._medium
 
1746
        if medium._is_remote_before((1, 13)):
 
1747
            # streaming was added in 1.13
 
1748
            return self._real_stream(repo, search)
1950
1749
        path = repo.bzrdir._path_for_remote_call(client)
1951
 
        search_bytes = repo._serialise_search_result(search)
1952
 
        args = (path, self.to_format.network_name())
1953
 
        candidate_verbs = [
1954
 
            ('Repository.get_stream_1.19', (1, 19)),
1955
 
            ('Repository.get_stream', (1, 13))]
1956
 
        found_verb = False
1957
 
        for verb, version in candidate_verbs:
1958
 
            if medium._is_remote_before(version):
1959
 
                continue
1960
 
            try:
1961
 
                response = repo._call_with_body_bytes_expecting_body(
1962
 
                    verb, args, search_bytes)
1963
 
            except errors.UnknownSmartMethod:
1964
 
                medium._remember_remote_is_before(version)
1965
 
            else:
1966
 
                response_tuple, response_handler = response
1967
 
                found_verb = True
1968
 
                break
1969
 
        if not found_verb:
 
1750
        try:
 
1751
            search_bytes = repo._serialise_search_result(search)
 
1752
            response = repo._call_with_body_bytes_expecting_body(
 
1753
                'Repository.get_stream',
 
1754
                (path, self.to_format.network_name()), search_bytes)
 
1755
            response_tuple, response_handler = response
 
1756
        except errors.UnknownSmartMethod:
 
1757
            medium._remember_remote_is_before((1,13))
1970
1758
            return self._real_stream(repo, search)
1971
1759
        if response_tuple[0] != 'ok':
1972
1760
            raise errors.UnexpectedSmartServerResponse(response_tuple)
1984
1772
        :param search: The overall search to satisfy with streams.
1985
1773
        :param sources: A list of Repository objects to query.
1986
1774
        """
1987
 
        self.from_serialiser = self.from_repository._format._serializer
 
1775
        self.serialiser = self.to_format._serializer
1988
1776
        self.seen_revs = set()
1989
1777
        self.referenced_revs = set()
1990
1778
        # If there are heads in the search, or the key count is > 0, we are not
2007
1795
    def missing_parents_rev_handler(self, substream):
2008
1796
        for content in substream:
2009
1797
            revision_bytes = content.get_bytes_as('fulltext')
2010
 
            revision = self.from_serialiser.read_revision_from_string(
2011
 
                revision_bytes)
 
1798
            revision = self.serialiser.read_revision_from_string(revision_bytes)
2012
1799
            self.seen_revs.add(content.key[-1])
2013
1800
            self.referenced_revs.update(revision.parent_ids)
2014
1801
            yield content
2053
1840
                self._network_name)
2054
1841
 
2055
1842
    def get_format_description(self):
2056
 
        self._ensure_real()
2057
 
        return 'Remote: ' + self._custom_format.get_format_description()
 
1843
        return 'Remote BZR Branch'
2058
1844
 
2059
1845
    def network_name(self):
2060
1846
        return self._network_name
2061
1847
 
2062
 
    def open(self, a_bzrdir, name=None, ignore_fallbacks=False):
2063
 
        return a_bzrdir.open_branch(name=name, 
2064
 
            ignore_fallbacks=ignore_fallbacks)
 
1848
    def open(self, a_bzrdir, ignore_fallbacks=False):
 
1849
        return a_bzrdir.open_branch(ignore_fallbacks=ignore_fallbacks)
2065
1850
 
2066
 
    def _vfs_initialize(self, a_bzrdir, name):
 
1851
    def _vfs_initialize(self, a_bzrdir):
2067
1852
        # Initialisation when using a local bzrdir object, or a non-vfs init
2068
1853
        # method is not available on the server.
2069
1854
        # self._custom_format is always set - the start of initialize ensures
2070
1855
        # that.
2071
1856
        if isinstance(a_bzrdir, RemoteBzrDir):
2072
1857
            a_bzrdir._ensure_real()
2073
 
            result = self._custom_format.initialize(a_bzrdir._real_bzrdir,
2074
 
                name)
 
1858
            result = self._custom_format.initialize(a_bzrdir._real_bzrdir)
2075
1859
        else:
2076
1860
            # We assume the bzrdir is parameterised; it may not be.
2077
 
            result = self._custom_format.initialize(a_bzrdir, name)
 
1861
            result = self._custom_format.initialize(a_bzrdir)
2078
1862
        if (isinstance(a_bzrdir, RemoteBzrDir) and
2079
1863
            not isinstance(result, RemoteBranch)):
2080
 
            result = RemoteBranch(a_bzrdir, a_bzrdir.find_repository(), result,
2081
 
                                  name=name)
 
1864
            result = RemoteBranch(a_bzrdir, a_bzrdir.find_repository(), result)
2082
1865
        return result
2083
1866
 
2084
 
    def initialize(self, a_bzrdir, name=None):
 
1867
    def initialize(self, a_bzrdir):
2085
1868
        # 1) get the network name to use.
2086
1869
        if self._custom_format:
2087
1870
            network_name = self._custom_format.network_name()
2093
1876
            network_name = reference_format.network_name()
2094
1877
        # Being asked to create on a non RemoteBzrDir:
2095
1878
        if not isinstance(a_bzrdir, RemoteBzrDir):
2096
 
            return self._vfs_initialize(a_bzrdir, name=name)
 
1879
            return self._vfs_initialize(a_bzrdir)
2097
1880
        medium = a_bzrdir._client._medium
2098
1881
        if medium._is_remote_before((1, 13)):
2099
 
            return self._vfs_initialize(a_bzrdir, name=name)
 
1882
            return self._vfs_initialize(a_bzrdir)
2100
1883
        # Creating on a remote bzr dir.
2101
1884
        # 2) try direct creation via RPC
2102
1885
        path = a_bzrdir._path_for_remote_call(a_bzrdir._client)
2103
 
        if name is not None:
2104
 
            # XXX JRV20100304: Support creating colocated branches
2105
 
            raise errors.NoColocatedBranchSupport(self)
2106
1886
        verb = 'BzrDir.create_branch'
2107
1887
        try:
2108
1888
            response = a_bzrdir._call(verb, path, network_name)
2109
1889
        except errors.UnknownSmartMethod:
2110
1890
            # Fallback - use vfs methods
2111
1891
            medium._remember_remote_is_before((1, 13))
2112
 
            return self._vfs_initialize(a_bzrdir, name=name)
 
1892
            return self._vfs_initialize(a_bzrdir)
2113
1893
        if response[0] != 'ok':
2114
1894
            raise errors.UnexpectedSmartServerResponse(response)
2115
1895
        # Turn the response into a RemoteRepository object.
2123
1903
                a_bzrdir._client)
2124
1904
        remote_repo = RemoteRepository(repo_bzrdir, repo_format)
2125
1905
        remote_branch = RemoteBranch(a_bzrdir, remote_repo,
2126
 
            format=format, setup_stacking=False, name=name)
 
1906
            format=format, setup_stacking=False)
2127
1907
        # XXX: We know this is a new branch, so it must have revno 0, revid
2128
1908
        # NULL_REVISION. Creating the branch locked would make this be unable
2129
1909
        # to be wrong; here its simply very unlikely to be wrong. RBC 20090225
2149
1929
        return self._custom_format.supports_set_append_revisions_only()
2150
1930
 
2151
1931
 
2152
 
class RemoteBranch(branch.Branch, _RpcHelper, lock._RelockDebugMixin):
 
1932
class RemoteBranch(branch.Branch, _RpcHelper):
2153
1933
    """Branch stored on a server accessed by HPSS RPC.
2154
1934
 
2155
1935
    At the moment most operations are mapped down to simple file operations.
2156
1936
    """
2157
1937
 
2158
1938
    def __init__(self, remote_bzrdir, remote_repository, real_branch=None,
2159
 
        _client=None, format=None, setup_stacking=True, name=None):
 
1939
        _client=None, format=None, setup_stacking=True):
2160
1940
        """Create a RemoteBranch instance.
2161
1941
 
2162
1942
        :param real_branch: An optional local implementation of the branch
2168
1948
        :param setup_stacking: If True make an RPC call to determine the
2169
1949
            stacked (or not) status of the branch. If False assume the branch
2170
1950
            is not stacked.
2171
 
        :param name: Colocated branch name
2172
1951
        """
2173
1952
        # We intentionally don't call the parent class's __init__, because it
2174
1953
        # will try to assign to self.tags, which is a property in this subclass.
2193
1972
            self._real_branch = None
2194
1973
        # Fill out expected attributes of branch for bzrlib API users.
2195
1974
        self._clear_cached_state()
2196
 
        # TODO: deprecate self.base in favor of user_url
2197
 
        self.base = self.bzrdir.user_url
2198
 
        self._name = name
 
1975
        self.base = self.bzrdir.root_transport.base
2199
1976
        self._control_files = None
2200
1977
        self._lock_mode = None
2201
1978
        self._lock_token = None
2212
1989
                    self._real_branch._format.network_name()
2213
1990
        else:
2214
1991
            self._format = format
2215
 
        # when we do _ensure_real we may need to pass ignore_fallbacks to the
2216
 
        # branch.open_branch method.
2217
 
        self._real_ignore_fallbacks = not setup_stacking
2218
1992
        if not self._format._network_name:
2219
1993
            # Did not get from open_branchV2 - old server.
2220
1994
            self._ensure_real()
2265
2039
                raise AssertionError('smart server vfs must be enabled '
2266
2040
                    'to use vfs implementation')
2267
2041
            self.bzrdir._ensure_real()
2268
 
            self._real_branch = self.bzrdir._real_bzrdir.open_branch(
2269
 
                ignore_fallbacks=self._real_ignore_fallbacks, name=self._name)
 
2042
            self._real_branch = self.bzrdir._real_bzrdir.open_branch()
2270
2043
            if self.repository._real_repository is None:
2271
2044
                # Give the remote repository the matching real repo.
2272
2045
                real_repo = self._real_branch.repository
2368
2141
            return self._vfs_get_tags_bytes()
2369
2142
        return response[0]
2370
2143
 
2371
 
    def _vfs_set_tags_bytes(self, bytes):
2372
 
        self._ensure_real()
2373
 
        return self._real_branch._set_tags_bytes(bytes)
2374
 
 
2375
 
    def _set_tags_bytes(self, bytes):
2376
 
        medium = self._client._medium
2377
 
        if medium._is_remote_before((1, 18)):
2378
 
            self._vfs_set_tags_bytes(bytes)
2379
 
            return
2380
 
        try:
2381
 
            args = (
2382
 
                self._remote_path(), self._lock_token, self._repo_lock_token)
2383
 
            response = self._call_with_body_bytes(
2384
 
                'Branch.set_tags_bytes', args, bytes)
2385
 
        except errors.UnknownSmartMethod:
2386
 
            medium._remember_remote_is_before((1, 18))
2387
 
            self._vfs_set_tags_bytes(bytes)
2388
 
 
2389
2144
    def lock_read(self):
2390
2145
        self.repository.lock_read()
2391
2146
        if not self._lock_mode:
2392
 
            self._note_lock('r')
2393
2147
            self._lock_mode = 'r'
2394
2148
            self._lock_count = 1
2395
2149
            if self._real_branch is not None:
2415
2169
 
2416
2170
    def lock_write(self, token=None):
2417
2171
        if not self._lock_mode:
2418
 
            self._note_lock('w')
2419
2172
            # Lock the branch and repo in one remote call.
2420
2173
            remote_tokens = self._remote_lock_write(token)
2421
2174
            self._lock_token, self._repo_lock_token = remote_tokens
2447
2200
            self.repository.lock_write(self._repo_lock_token)
2448
2201
        return self._lock_token or None
2449
2202
 
 
2203
    def _set_tags_bytes(self, bytes):
 
2204
        self._ensure_real()
 
2205
        return self._real_branch._set_tags_bytes(bytes)
 
2206
 
2450
2207
    def _unlock(self, branch_token, repo_token):
2451
2208
        err_context = {'token': str((branch_token, repo_token))}
2452
2209
        response = self._call(
2456
2213
            return
2457
2214
        raise errors.UnexpectedSmartServerResponse(response)
2458
2215
 
2459
 
    @only_raises(errors.LockNotHeld, errors.LockBroken)
2460
2216
    def unlock(self):
2461
2217
        try:
2462
2218
            self._lock_count -= 1
2502
2258
            raise NotImplementedError(self.dont_leave_lock_in_place)
2503
2259
        self._leave_lock = False
2504
2260
 
2505
 
    @needs_read_lock
2506
2261
    def get_rev_id(self, revno, history=None):
2507
2262
        if revno == 0:
2508
2263
            return _mod_revision.NULL_REVISION
2873
2628
                    'Missing key %r in context %r', key_err.args[0], context)
2874
2629
                raise err
2875
2630
 
2876
 
    if err.error_verb == 'IncompatibleRepositories':
2877
 
        raise errors.IncompatibleRepositories(err.error_args[0],
2878
 
            err.error_args[1], err.error_args[2])
2879
 
    elif err.error_verb == 'NoSuchRevision':
 
2631
    if err.error_verb == 'NoSuchRevision':
2880
2632
        raise NoSuchRevision(find('branch'), err.error_args[0])
2881
2633
    elif err.error_verb == 'nosuchrevision':
2882
2634
        raise NoSuchRevision(find('repository'), err.error_args[0])
2883
 
    elif err.error_verb == 'nobranch':
2884
 
        if len(err.error_args) >= 1:
2885
 
            extra = err.error_args[0]
2886
 
        else:
2887
 
            extra = None
2888
 
        raise errors.NotBranchError(path=find('bzrdir').root_transport.base,
2889
 
            detail=extra)
 
2635
    elif err.error_tuple == ('nobranch',):
 
2636
        raise errors.NotBranchError(path=find('bzrdir').root_transport.base)
2890
2637
    elif err.error_verb == 'norepository':
2891
2638
        raise errors.NoRepositoryPresent(find('bzrdir'))
2892
2639
    elif err.error_verb == 'LockContention':