Python utils.single_client函数代码示例

    def test_mongos_max_staleness(self):
        # Sanity check that we're sending maxStalenessSeconds
        coll = client_context.client.pymongo_test.get_collection(
            "test", read_preference=SecondaryPreferred(max_staleness=120))
        # No error
        coll.find_one()

        coll = client_context.client.pymongo_test.get_collection(
            "test", read_preference=SecondaryPreferred(max_staleness=10))
        try:
            coll.find_one()
        except OperationFailure as exc:
            self.assertEqual(160, exc.code)
        else:
            self.fail("mongos accepted invalid staleness")

        coll = single_client(
            readPreference='secondaryPreferred',
            maxStalenessSeconds=120).pymongo_test.test
        # No error
        coll.find_one()

        coll = single_client(
            readPreference='secondaryPreferred',
            maxStalenessSeconds=10).pymongo_test.test
        try:
            coll.find_one()
        except OperationFailure as exc:
            self.assertEqual(160, exc.code)
        else:
            self.fail("mongos accepted invalid staleness")

    def test_mongo_client(self):
        pair = client_context.pair
        m = rs_or_single_client(w=0)
        coll = m.pymongo_test.write_concern_test
        coll.drop()
        doc = {"_id": ObjectId()}
        coll.insert_one(doc)
        self.assertTrue(coll.insert_one(doc))
        coll = coll.with_options(write_concern=WriteConcern(w=1))
        self.assertRaises(OperationFailure, coll.insert_one, doc)

        m = rs_or_single_client()
        coll = m.pymongo_test.write_concern_test
        new_coll = coll.with_options(write_concern=WriteConcern(w=0))
        self.assertTrue(new_coll.insert_one(doc))
        self.assertRaises(OperationFailure, coll.insert_one, doc)

        m = rs_or_single_client("mongodb://%s/" % (pair,),
                                replicaSet=client_context.replica_set_name)

        coll = m.pymongo_test.write_concern_test
        self.assertRaises(OperationFailure, coll.insert_one, doc)
        m = rs_or_single_client("mongodb://%s/?w=0" % (pair,),
                                replicaSet=client_context.replica_set_name)

        coll = m.pymongo_test.write_concern_test
        coll.insert_one(doc)

        # Equality tests
        direct = connected(single_client(w=0))
        direct2 = connected(single_client("mongodb://%s/?w=0" % (pair,),
                                          **self.credentials))
        self.assertEqual(direct, direct2)
        self.assertFalse(direct != direct2)

    def test_gridfs_secondary(self):
        primary_host, primary_port = self.primary
        primary_connection = single_client(primary_host, primary_port)

        secondary_host, secondary_port = one(self.secondaries)
        secondary_connection = single_client(
            secondary_host, secondary_port,
            read_preference=ReadPreference.SECONDARY)

        # Should detect it's connected to secondary and not attempt to
        # create index
        fs = gridfs.GridFS(secondary_connection.gfsreplica, 'gfssecondarytest')

        # This won't detect secondary, raises error
        self.assertRaises(ConnectionFailure, fs.put, b'foo')

 def test_not_master_error(self):
     address = next(iter(self.client.secondaries))
     client = single_client(*address)
     # Clear authentication command results from the listener.
     client.admin.command('ismaster')
     self.listener.results = {}
     error = None
     try:
         client.pymongo_test.test.find_one_and_delete({})
     except NotMasterError as exc:
         error = exc.errors
     results = self.listener.results
     started = results.get('started')
     failed = results.get('failed')
     self.assertIsNone(results.get('succeeded'))
     self.assertTrue(
         isinstance(started, monitoring.CommandStartedEvent))
     self.assertTrue(
         isinstance(failed, monitoring.CommandFailedEvent))
     self.assertEqual('findAndModify', failed.command_name)
     self.assertEqual(address, failed.connection_id)
     self.assertEqual(0, failed.failure.get('ok'))
     self.assertTrue(isinstance(failed.request_id, int))
     self.assertTrue(isinstance(failed.duration_micros, int))
     self.assertEqual(error, failed.failure)

 def setUpClass(cls):
     cls.listener = EventListener()
     cls.saved_listeners = monitoring._LISTENERS
     # Don't use any global subscribers.
     monitoring._LISTENERS = monitoring._Listeners([], [], [], [])
     cls.client = single_client(event_listeners=[cls.listener])
     cls.db = cls.client.pymongo_test

    def test_cache(self):
        client = single_client()
        # Force authentication.
        client.admin.command('ismaster')
        all_credentials = client._MongoClient__all_credentials
        credentials = all_credentials.get('admin')
        cache = credentials.cache
        self.assertIsNotNone(cache)
        data = cache.data
        self.assertIsNotNone(data)
        self.assertEqual(len(data), 4)
        ckey, skey, salt, iterations = data
        self.assertIsInstance(ckey, bytes)
        self.assertIsInstance(skey, bytes)
        self.assertIsInstance(salt, bytes)
        self.assertIsInstance(iterations, int)

        pool = next(iter(client._topology._servers.values()))._pool
        with pool.get_socket(all_credentials) as sock_info:
            authset = sock_info.authset
        cached = set(all_credentials.values())
        self.assertEqual(len(cached), 1)
        self.assertFalse(authset - cached)
        self.assertFalse(cached - authset)

        sock_credentials = next(iter(authset))
        sock_cache = sock_credentials.cache
        self.assertIsNotNone(sock_cache)
        self.assertEqual(sock_cache.data, data)

    def create_mock_monitor(self, responses, uri, expected_results):
        with client_knobs(heartbeat_frequency=0.1, events_queue_frequency=0.1):
            class MockMonitor(Monitor):
                def _check_with_socket(self, sock_info):
                    if isinstance(responses[1], Exception):
                        raise responses[1]
                    return IsMaster(responses[1]), 99

            m = single_client(h=uri,
                              event_listeners=(self.all_listener,),
                              _monitor_class=MockMonitor,
                              _pool_class=MockPool
                              )

            expected_len = len(expected_results)
            wait_until(lambda: len(self.all_listener.results) == expected_len,
                       "publish all events", timeout=15)

        try:
            for i in range(len(expected_results)):
                result = self.all_listener.results[i] if len(
                    self.all_listener.results) > i else None
                self.assertEqual(expected_results[i],
                                 result.__class__.__name__)
                self.assertEqual(result.connection_id,
                                 responses[0])
                if expected_results[i] != 'ServerHeartbeatStartedEvent':
                    if isinstance(result.reply, IsMaster):
                        self.assertEqual(result.duration, 99)
                        self.assertEqual(result.reply._doc, responses[1])
                    else:
                        self.assertEqual(result.reply, responses[1])

        finally:
            m.close()

    def test_reads_from_secondary(self):

        host, port = next(iter(self.client.secondaries))
        # Direct connection to a secondary.
        client = single_client(host, port)
        self.assertFalse(client.is_primary)

        # Regardless of read preference, we should be able to do
        # "reads" with a direct connection to a secondary.
        # See server-selection.rst#topology-type-single.
        self.assertEqual(client.read_preference, ReadPreference.PRIMARY)

        db = client.pymongo_test
        coll = db.test

        # Test find and find_one.
        self.assertIsNotNone(coll.find_one())
        self.assertEqual(10, len(list(coll.find())))

        # Test some database helpers.
        self.assertIsNotNone(db.collection_names())
        self.assertIsNotNone(db.validate_collection("test"))
        self.assertIsNotNone(db.command("count", "test"))

        # Test some collection helpers.
        self.assertEqual(10, coll.count())
        self.assertEqual(10, len(coll.distinct("_id")))
        self.assertIsNotNone(coll.aggregate([]))
        self.assertIsNotNone(coll.index_information())

        # Test some "magic" namespace helpers.
        self.assertIsNotNone(db.current_op())

    def test_gridfs_secondary(self):
        primary_host, primary_port = self.primary
        primary_connection = single_client(primary_host, primary_port)

        secondary_host, secondary_port = one(self.secondaries)
        secondary_connection = single_client(secondary_host, secondary_port, read_preference=ReadPreference.SECONDARY)

        primary_connection.pymongo_test.drop_collection("fs.files")
        primary_connection.pymongo_test.drop_collection("fs.chunks")

        # Should detect it's connected to secondary and not attempt to
        # create index
        fs = gridfs.GridFS(secondary_connection.pymongo_test)

        # This won't detect secondary, raises error
        self.assertRaises(ConnectionFailure, fs.put, b"foo")

    def test_bool(self):
        client = single_client()

        wait_until(lambda: client.address, "discover primary")
        selection = Selection.from_topology_description(
            client._topology.description)

        self.assertTrue(selection)
        self.assertFalse(selection.with_server_descriptions([]))

 def setUpClass(cls):
     super(TransactionsBase, cls).setUpClass()
     # Speed up tests by reducing SDAM waiting time after a network error.
     cls.knobs = client_knobs(min_heartbeat_interval=0.1)
     cls.knobs.enable()
     cls.mongos_clients = []
     if client_context.supports_transactions():
         for address in client_context.mongoses:
             cls.mongos_clients.append(single_client('%s:%s' % address))

    def test_not_master_error(self):
        secondary_address = one(self.secondaries)
        direct_client = single_client(*secondary_address)

        with self.assertRaises(NotMasterError):
            direct_client.pymongo_test.collection.insert_one({})

        db = direct_client.get_database(
                "pymongo_test", write_concern=WriteConcern(w=0))
        with self.assertRaises(NotMasterError):
            db.collection.insert_one({})

    def test_gridfs_secondary_lazy(self):
        # Should detect it's connected to secondary and not attempt to
        # create index.
        secondary_host, secondary_port = one(self.secondaries)
        client = single_client(secondary_host, secondary_port, read_preference=ReadPreference.SECONDARY, connect=False)

        # Still no connection.
        fs = gridfs.GridFS(client.test_gridfs_secondary_lazy)

        # Connects, doesn't create index.
        self.assertRaises(NoFile, fs.get_last_version)
        self.assertRaises(ConnectionFailure, fs.put, "data")

    def test_atexit_hook(self):
        client = single_client(client_context.host, client_context.port)
        executor = one(client._topology._servers.values())._monitor._executor
        connected(client)

        # The executor stores a weakref to itself in _EXECUTORS.
        ref = one([r for r in _EXECUTORS.copy() if r() is executor])

        del executor
        del client

        wait_until(partial(unregistered, ref), 'unregister executor',
                   timeout=5)

    def setUpClass(cls):
        super(TestBulkWriteConcern, cls).setUpClass()
        cls.w = client_context.w
        cls.secondary = None
        if cls.w > 1:
            for member in client_context.ismaster['hosts']:
                if member != client_context.ismaster['primary']:
                    cls.secondary = single_client(*partition_node(member))
                    break

        # We tested wtimeout errors by specifying a write concern greater than
        # the number of members, but in MongoDB 2.7.8+ this causes a different
        # sort of error, "Not enough data-bearing nodes". In recent servers we
        # use a failpoint to pause replication on a secondary.
        cls.need_replication_stopped = client_context.version.at_least(2, 7, 8)