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  • Committer: John Arbash Meinel
  • Date: 2010-01-12 22:51:31 UTC
  • mto: This revision was merged to the branch mainline in revision 4955.
  • Revision ID: john@arbash-meinel.com-20100112225131-he8h411p6aeeb947
Delay grabbing an output stream until we actually go to show a diff.

This makes the test suite happy, but it also seems to be reasonable.
If we aren't going to write anything, we don't need to hold an
output stream open.

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1
 
# Copyright (C) 2006-2010 Canonical Ltd
 
1
# Copyright (C) 2006, 2007, 2008, 2009 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
27
27
    lock,
28
28
    lockdir,
29
29
    repository,
30
 
    repository as _mod_repository,
31
30
    revision,
32
31
    revision as _mod_revision,
33
 
    static_tuple,
34
32
    symbol_versioning,
35
33
)
36
34
from bzrlib.branch import BranchReferenceFormat
116
114
 
117
115
        self._probe_bzrdir()
118
116
 
119
 
    def __repr__(self):
120
 
        return '%s(%r)' % (self.__class__.__name__, self._client)
121
 
 
122
117
    def _probe_bzrdir(self):
123
118
        medium = self._client._medium
124
119
        path = self._path_for_remote_call(self._client)
244
239
        self._ensure_real()
245
240
        self._real_bzrdir.destroy_repository()
246
241
 
247
 
    def create_branch(self, name=None):
 
242
    def create_branch(self):
248
243
        # as per meta1 formats - just delegate to the format object which may
249
244
        # be parameterised.
250
 
        real_branch = self._format.get_branch_format().initialize(self,
251
 
            name=name)
 
245
        real_branch = self._format.get_branch_format().initialize(self)
252
246
        if not isinstance(real_branch, RemoteBranch):
253
 
            result = RemoteBranch(self, self.find_repository(), real_branch,
254
 
                                  name=name)
 
247
            result = RemoteBranch(self, self.find_repository(), real_branch)
255
248
        else:
256
249
            result = real_branch
257
250
        # BzrDir.clone_on_transport() uses the result of create_branch but does
263
256
        self._next_open_branch_result = result
264
257
        return result
265
258
 
266
 
    def destroy_branch(self, name=None):
 
259
    def destroy_branch(self):
267
260
        """See BzrDir.destroy_branch"""
268
261
        self._ensure_real()
269
 
        self._real_bzrdir.destroy_branch(name=name)
 
262
        self._real_bzrdir.destroy_branch()
270
263
        self._next_open_branch_result = None
271
264
 
272
265
    def create_workingtree(self, revision_id=None, from_branch=None):
291
284
    def _get_branch_reference(self):
292
285
        path = self._path_for_remote_call(self._client)
293
286
        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
 
287
        if not medium._is_remote_before((1, 13)):
302
288
            try:
303
 
                response = self._call(verb, path)
 
289
                response = self._call('BzrDir.open_branchV2', path)
 
290
                if response[0] not in ('ref', 'branch'):
 
291
                    raise errors.UnexpectedSmartServerResponse(response)
 
292
                return response
304
293
            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'):
 
294
                medium._remember_remote_is_before((1, 13))
 
295
        response = self._call('BzrDir.open_branch', path)
 
296
        if response[0] != 'ok':
318
297
            raise errors.UnexpectedSmartServerResponse(response)
319
 
        return response
 
298
        if response[1] != '':
 
299
            return ('ref', response[1])
 
300
        else:
 
301
            return ('branch', '')
320
302
 
321
303
    def _get_tree_branch(self):
322
304
        """See BzrDir._get_tree_branch()."""
323
305
        return None, self.open_branch()
324
306
 
325
 
    def open_branch(self, name=None, unsupported=False,
326
 
                    ignore_fallbacks=False):
327
 
        if unsupported:
 
307
    def open_branch(self, _unsupported=False, ignore_fallbacks=False):
 
308
        if _unsupported:
328
309
            raise NotImplementedError('unsupported flag support not implemented yet.')
329
310
        if self._next_open_branch_result is not None:
330
311
            # See create_branch for details.
335
316
        if response[0] == 'ref':
336
317
            # a branch reference, use the existing BranchReference logic.
337
318
            format = BranchReferenceFormat()
338
 
            return format.open(self, name=name, _found=True,
339
 
                location=response[1], ignore_fallbacks=ignore_fallbacks)
 
319
            return format.open(self, _found=True, location=response[1],
 
320
                ignore_fallbacks=ignore_fallbacks)
340
321
        branch_format_name = response[1]
341
322
        if not branch_format_name:
342
323
            branch_format_name = None
343
324
        format = RemoteBranchFormat(network_name=branch_format_name)
344
325
        return RemoteBranch(self, self.find_repository(), format=format,
345
 
            setup_stacking=not ignore_fallbacks, name=name)
 
326
            setup_stacking=not ignore_fallbacks)
346
327
 
347
328
    def _open_repo_v1(self, path):
348
329
        verb = 'BzrDir.find_repository'
425
406
        """Return the path to be used for this bzrdir in a remote call."""
426
407
        return client.remote_path_from_transport(self.root_transport)
427
408
 
428
 
    def get_branch_transport(self, branch_format, name=None):
 
409
    def get_branch_transport(self, branch_format):
429
410
        self._ensure_real()
430
 
        return self._real_bzrdir.get_branch_transport(branch_format, name=name)
 
411
        return self._real_bzrdir.get_branch_transport(branch_format)
431
412
 
432
413
    def get_repository_transport(self, repository_format):
433
414
        self._ensure_real()
643
624
        return self._custom_format._serializer
644
625
 
645
626
 
646
 
class RemoteRepository(_RpcHelper, lock._RelockDebugMixin,
647
 
    bzrdir.ControlComponent):
 
627
class RemoteRepository(_RpcHelper, lock._RelockDebugMixin):
648
628
    """Repository accessed over rpc.
649
629
 
650
630
    For the moment most operations are performed using local transport-backed
693
673
        # Additional places to query for data.
694
674
        self._fallback_repositories = []
695
675
 
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
676
    def __str__(self):
708
677
        return "%s(%s)" % (self.__class__.__name__, self.base)
709
678
 
917
886
        parents_provider = self._make_parents_provider(other_repository)
918
887
        return graph.Graph(parents_provider)
919
888
 
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
889
    def gather_stats(self, revid=None, committers=None):
930
890
        """See Repository.gather_stats()."""
931
891
        path = self.bzrdir._path_for_remote_call(self._client)
1240
1200
            # state, so always add a lock here. If a caller passes us a locked
1241
1201
            # repository, they are responsible for unlocking it later.
1242
1202
            repository.lock_read()
1243
 
        self._check_fallback_repository(repository)
1244
1203
        self._fallback_repositories.append(repository)
1245
1204
        # If self._real_repository was parameterised already (e.g. because a
1246
1205
        # _real_branch had its get_stacked_on_url method called), then the
1247
1206
        # repository to be added may already be in the _real_repositories list.
1248
1207
        if self._real_repository is not None:
1249
 
            fallback_locations = [repo.user_url for repo in
 
1208
            fallback_locations = [repo.bzrdir.root_transport.base for repo in
1250
1209
                self._real_repository._fallback_repositories]
1251
 
            if repository.user_url not in fallback_locations:
 
1210
            if repository.bzrdir.root_transport.base not in fallback_locations:
1252
1211
                self._real_repository.add_fallback_repository(repository)
1253
1212
 
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
1213
    def add_inventory(self, revid, inv, parents):
1265
1214
        self._ensure_real()
1266
1215
        return self._real_repository.add_inventory(revid, inv, parents)
1267
1216
 
1268
1217
    def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1269
 
            parents, basis_inv=None, propagate_caches=False):
 
1218
                               parents):
1270
1219
        self._ensure_real()
1271
1220
        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)
 
1221
            delta, new_revision_id, parents)
1274
1222
 
1275
1223
    def add_revision(self, rev_id, rev, inv=None, config=None):
1276
1224
        self._ensure_real()
1535
1483
        return self._real_repository.get_signature_text(revision_id)
1536
1484
 
1537
1485
    @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)
 
1486
    def get_inventory_xml(self, revision_id):
 
1487
        self._ensure_real()
 
1488
        return self._real_repository.get_inventory_xml(revision_id)
 
1489
 
 
1490
    def deserialise_inventory(self, revision_id, xml):
 
1491
        self._ensure_real()
 
1492
        return self._real_repository.deserialise_inventory(revision_id, xml)
1541
1493
 
1542
1494
    def reconcile(self, other=None, thorough=False):
1543
1495
        self._ensure_real()
1619
1571
        return self._real_repository.inventories
1620
1572
 
1621
1573
    @needs_write_lock
1622
 
    def pack(self, hint=None, clean_obsolete_packs=False):
 
1574
    def pack(self, hint=None):
1623
1575
        """Compress the data within the repository.
1624
1576
 
1625
1577
        This is not currently implemented within the smart server.
1626
1578
        """
1627
1579
        self._ensure_real()
1628
 
        return self._real_repository.pack(hint=hint, clean_obsolete_packs=clean_obsolete_packs)
 
1580
        return self._real_repository.pack(hint=hint)
1629
1581
 
1630
1582
    @property
1631
1583
    def revisions(self):
2059
2011
    def network_name(self):
2060
2012
        return self._network_name
2061
2013
 
2062
 
    def open(self, a_bzrdir, name=None, ignore_fallbacks=False):
2063
 
        return a_bzrdir.open_branch(name=name, 
2064
 
            ignore_fallbacks=ignore_fallbacks)
 
2014
    def open(self, a_bzrdir, ignore_fallbacks=False):
 
2015
        return a_bzrdir.open_branch(ignore_fallbacks=ignore_fallbacks)
2065
2016
 
2066
 
    def _vfs_initialize(self, a_bzrdir, name):
 
2017
    def _vfs_initialize(self, a_bzrdir):
2067
2018
        # Initialisation when using a local bzrdir object, or a non-vfs init
2068
2019
        # method is not available on the server.
2069
2020
        # self._custom_format is always set - the start of initialize ensures
2070
2021
        # that.
2071
2022
        if isinstance(a_bzrdir, RemoteBzrDir):
2072
2023
            a_bzrdir._ensure_real()
2073
 
            result = self._custom_format.initialize(a_bzrdir._real_bzrdir,
2074
 
                name)
 
2024
            result = self._custom_format.initialize(a_bzrdir._real_bzrdir)
2075
2025
        else:
2076
2026
            # We assume the bzrdir is parameterised; it may not be.
2077
 
            result = self._custom_format.initialize(a_bzrdir, name)
 
2027
            result = self._custom_format.initialize(a_bzrdir)
2078
2028
        if (isinstance(a_bzrdir, RemoteBzrDir) and
2079
2029
            not isinstance(result, RemoteBranch)):
2080
 
            result = RemoteBranch(a_bzrdir, a_bzrdir.find_repository(), result,
2081
 
                                  name=name)
 
2030
            result = RemoteBranch(a_bzrdir, a_bzrdir.find_repository(), result)
2082
2031
        return result
2083
2032
 
2084
 
    def initialize(self, a_bzrdir, name=None):
 
2033
    def initialize(self, a_bzrdir):
2085
2034
        # 1) get the network name to use.
2086
2035
        if self._custom_format:
2087
2036
            network_name = self._custom_format.network_name()
2093
2042
            network_name = reference_format.network_name()
2094
2043
        # Being asked to create on a non RemoteBzrDir:
2095
2044
        if not isinstance(a_bzrdir, RemoteBzrDir):
2096
 
            return self._vfs_initialize(a_bzrdir, name=name)
 
2045
            return self._vfs_initialize(a_bzrdir)
2097
2046
        medium = a_bzrdir._client._medium
2098
2047
        if medium._is_remote_before((1, 13)):
2099
 
            return self._vfs_initialize(a_bzrdir, name=name)
 
2048
            return self._vfs_initialize(a_bzrdir)
2100
2049
        # Creating on a remote bzr dir.
2101
2050
        # 2) try direct creation via RPC
2102
2051
        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
2052
        verb = 'BzrDir.create_branch'
2107
2053
        try:
2108
2054
            response = a_bzrdir._call(verb, path, network_name)
2109
2055
        except errors.UnknownSmartMethod:
2110
2056
            # Fallback - use vfs methods
2111
2057
            medium._remember_remote_is_before((1, 13))
2112
 
            return self._vfs_initialize(a_bzrdir, name=name)
 
2058
            return self._vfs_initialize(a_bzrdir)
2113
2059
        if response[0] != 'ok':
2114
2060
            raise errors.UnexpectedSmartServerResponse(response)
2115
2061
        # Turn the response into a RemoteRepository object.
2123
2069
                a_bzrdir._client)
2124
2070
        remote_repo = RemoteRepository(repo_bzrdir, repo_format)
2125
2071
        remote_branch = RemoteBranch(a_bzrdir, remote_repo,
2126
 
            format=format, setup_stacking=False, name=name)
 
2072
            format=format, setup_stacking=False)
2127
2073
        # XXX: We know this is a new branch, so it must have revno 0, revid
2128
2074
        # NULL_REVISION. Creating the branch locked would make this be unable
2129
2075
        # to be wrong; here its simply very unlikely to be wrong. RBC 20090225
2156
2102
    """
2157
2103
 
2158
2104
    def __init__(self, remote_bzrdir, remote_repository, real_branch=None,
2159
 
        _client=None, format=None, setup_stacking=True, name=None):
 
2105
        _client=None, format=None, setup_stacking=True):
2160
2106
        """Create a RemoteBranch instance.
2161
2107
 
2162
2108
        :param real_branch: An optional local implementation of the branch
2168
2114
        :param setup_stacking: If True make an RPC call to determine the
2169
2115
            stacked (or not) status of the branch. If False assume the branch
2170
2116
            is not stacked.
2171
 
        :param name: Colocated branch name
2172
2117
        """
2173
2118
        # We intentionally don't call the parent class's __init__, because it
2174
2119
        # will try to assign to self.tags, which is a property in this subclass.
2193
2138
            self._real_branch = None
2194
2139
        # Fill out expected attributes of branch for bzrlib API users.
2195
2140
        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
 
2141
        self.base = self.bzrdir.root_transport.base
2199
2142
        self._control_files = None
2200
2143
        self._lock_mode = None
2201
2144
        self._lock_token = None
2266
2209
                    'to use vfs implementation')
2267
2210
            self.bzrdir._ensure_real()
2268
2211
            self._real_branch = self.bzrdir._real_bzrdir.open_branch(
2269
 
                ignore_fallbacks=self._real_ignore_fallbacks, name=self._name)
 
2212
                ignore_fallbacks=self._real_ignore_fallbacks)
2270
2213
            if self.repository._real_repository is None:
2271
2214
                # Give the remote repository the matching real repo.
2272
2215
                real_repo = self._real_branch.repository
2880
2823
        raise NoSuchRevision(find('branch'), err.error_args[0])
2881
2824
    elif err.error_verb == 'nosuchrevision':
2882
2825
        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)
 
2826
    elif err.error_tuple == ('nobranch',):
 
2827
        raise errors.NotBranchError(path=find('bzrdir').root_transport.base)
2890
2828
    elif err.error_verb == 'norepository':
2891
2829
        raise errors.NoRepositoryPresent(find('bzrdir'))
2892
2830
    elif err.error_verb == 'LockContention':