Beispiel #1
0
    def run_scenario(self):
        if 'heartbeatFrequencyMS' in scenario_def:
            frequency = int(scenario_def['heartbeatFrequencyMS']) / 1000.0
        else:
            frequency = HEARTBEAT_FREQUENCY

        # Initialize topologies.
        seeds, hosts = get_addresses(
            scenario_def['topology_description']['servers'])

        topology = Topology(
            TopologySettings(seeds=seeds,
                             monitor_class=MockMonitor,
                             pool_class=MockPool,
                             heartbeat_frequency=frequency))

        # Update topologies with server descriptions.
        for server in scenario_def['topology_description']['servers']:
            server_description = make_server_description(server, hosts)
            topology.on_change(server_description)

        # Create server selector.
        # Make first letter lowercase to match read_pref's modes.
        pref_def = scenario_def['read_preference']
        mode_string = pref_def.get('mode', 'primary')
        mode_string = mode_string[:1].lower() + mode_string[1:]
        mode = read_preferences.read_pref_mode_from_name(mode_string)
        max_staleness = pref_def.get('maxStalenessSeconds', -1)
        tag_sets = pref_def.get('tag_sets')

        if scenario_def.get('error'):
            with self.assertRaises(ConfigurationError):
                # Error can be raised when making Read Pref or selecting.
                pref = read_preferences.make_read_preference(
                    mode, tag_sets=tag_sets, max_staleness=max_staleness)

                topology.select_server(pref)
            return

        expected_addrs = set([
            server['address'] for server in scenario_def['in_latency_window']])

        # Select servers.
        pref = read_preferences.make_read_preference(
            mode, tag_sets=tag_sets, max_staleness=max_staleness)

        if not expected_addrs:
            with self.assertRaises(ConnectionFailure):
                topology.select_servers(pref, server_selection_timeout=0)
            return

        servers = topology.select_servers(pref, server_selection_timeout=0)
        actual_addrs = set(['%s:%d' % s.description.address for s in servers])

        for unexpected in actual_addrs - expected_addrs:
            self.fail("'%s' shouldn't have been selected, but was" % unexpected)

        for unselected in expected_addrs - actual_addrs:
            self.fail("'%s' should have been selected, but wasn't" % unselected)
    def run_scenario(self):
        if 'heartbeatFrequencyMS' in scenario_def:
            frequency = int(scenario_def['heartbeatFrequencyMS']) / 1000.0
        else:
            frequency = HEARTBEAT_FREQUENCY

        # Initialize topologies.
        seeds, hosts = get_addresses(
            scenario_def['topology_description']['servers'])

        topology = Topology(
            TopologySettings(seeds=seeds,
                             monitor_class=MockMonitor,
                             pool_class=MockPool,
                             heartbeat_frequency=frequency))

        # Update topologies with server descriptions.
        for server in scenario_def['topology_description']['servers']:
            server_description = make_server_description(server, hosts)
            topology.on_change(server_description)

        # Create server selector.
        # Make first letter lowercase to match read_pref's modes.
        pref_def = scenario_def['read_preference']
        mode_string = pref_def.get('mode', 'primary')
        mode_string = mode_string[:1].lower() + mode_string[1:]
        mode = read_preferences.read_pref_mode_from_name(mode_string)
        max_staleness = pref_def.get('maxStalenessMS', 0) / 1000.0
        tag_sets = pref_def.get('tag_sets')

        if scenario_def.get('error'):
            with self.assertRaises(ConfigurationError):
                # Error can be raised when making Read Pref or selecting.
                pref = read_preferences.make_read_preference(
                    mode, tag_sets=tag_sets, max_staleness=max_staleness)

                topology.select_server(pref)
            return

        expected_addrs = set([
            server['address'] for server in scenario_def['in_latency_window']])

        # Select servers.
        pref = read_preferences.make_read_preference(
            mode, tag_sets=tag_sets, max_staleness=max_staleness)

        if not expected_addrs:
            with self.assertRaises(ConnectionFailure):
                topology.select_servers(pref, server_selection_timeout=0)
            return

        servers = topology.select_servers(pref, server_selection_timeout=0)
        actual_addrs = set(['%s:%d' % s.description.address for s in servers])

        for unexpected in actual_addrs - expected_addrs:
            self.fail("'%s' shouldn't have been selected, but was" % unexpected)

        for unselected in expected_addrs - actual_addrs:
            self.fail("'%s' should have been selected, but wasn't" % unselected)
Beispiel #3
0
    def test(self):
        ismaster_with_version = ismaster.copy()
        ismaster_with_version['maxWireVersion'] = operation.wire_version
        self.server.autoresponds('ismaster', **ismaster_with_version)
        if operation.op_type == 'always-use-secondary':
            slave_ok = True
        elif operation.op_type == 'may-use-secondary':
            slave_ok = mode != 'primary' or server_type != 'mongos'
        elif operation.op_type == 'must-use-primary':
            slave_ok = server_type != 'mongos'
        else:
            assert False, 'unrecognized op_type %r' % operation.op_type

        pref = make_read_preference(read_pref_mode_from_name(mode),
                                    tag_sets=None)

        client = MongoClient(self.server.uri, read_preference=pref)
        self.addCleanup(client.close)
        with going(operation.function, client):
            request = self.server.receive()
            request.reply(operation.reply)

        self.assertEqual(topology_type_name(client), 'Single')
        if slave_ok:
            self.assertTrue(request.slave_ok, 'SlaveOkay not set')
        else:
            self.assertFalse(request.slave_ok, 'SlaveOkay set')
    def test(self):
        server = MockupDB()
        self.addCleanup(server.stop)
        server.run()
        server.autoresponds('ismaster', ismaster=True, msg='isdbgrid',
                            minWireVersion=2, maxWireVersion=6)

        pref = make_read_preference(read_pref_mode_from_name(mode),
                                    tag_sets=None)

        client = MongoClient(server.uri, read_preference=pref)
        self.addCleanup(client.close)

        with going(operation.function, client):
            request = server.receive()
            request.reply(operation.reply)

        if operation.op_type == 'always-use-secondary':
            self.assertEqual(ReadPreference.SECONDARY.document,
                             request.doc.get('$readPreference'))
            slave_ok = mode != 'primary'
        elif operation.op_type == 'must-use-primary':
            slave_ok = False
        elif operation.op_type == 'may-use-secondary':
            slave_ok = mode != 'primary'
            self.assertEqual(pref.document,
                             request.doc.get('$readPreference'))
        else:
            self.fail('unrecognized op_type %r' % operation.op_type)

        if slave_ok:
            self.assertTrue(request.slave_ok, 'SlaveOkay not set')
        else:
            self.assertFalse(request.slave_ok, 'SlaveOkay set')
Beispiel #5
0
    def test(self):
        pref = make_read_preference(read_pref_mode_from_name(mode),
                                    tag_sets=None)

        client = self.setup_client(read_preference=pref)

        if operation.op_type == 'always-use-secondary':
            expected_server = self.secondary
            expected_pref = ReadPreference.SECONDARY
        elif operation.op_type == 'must-use-primary':
            expected_server = self.primary
            expected_pref = ReadPreference.PRIMARY
        elif operation.op_type == 'may-use-secondary':
            if mode in ('primary', 'primaryPreferred'):
                expected_server = self.primary
            else:
                expected_server = self.secondary
            expected_pref = pref
        else:
            self.fail('unrecognized op_type %r' % operation.op_type)

        # For single mongod we send primaryPreferred instead of primary.
        if expected_pref == ReadPreference.PRIMARY and self.single_mongod:
            expected_pref = ReadPreference.PRIMARY_PREFERRED

        with going(operation.function, client) as future:
            request = expected_server.receive()
            request.reply(operation.reply)

        future()  # No error.

        self.assertEqual(expected_pref.document,
                         request.doc.get('$readPreference'))
        self.assertNotIn('$query', request.doc)
Beispiel #6
0
def _parse_read_preference(options):
    """Parse read preference options."""
    if 'read_preference' in options:
        return options['read_preference']

    mode = options.get('readpreference', 0)
    tags = options.get('readpreferencetags')
    return make_read_preference(mode, tags)
def _parse_read_preference(options):
    """Parse read preference options."""
    if "read_preference" in options:
        return options["read_preference"]

    mode = options.get("readpreference", 0)
    tags = options.get("readpreferencetags")
    return make_read_preference(mode, tags)
def _parse_read_preference(options):
    """Parse read preference options."""
    if 'read_preference' in options:
        return options['read_preference']

    mode = options.get('readpreference', 0)
    tags = options.get('readpreferencetags')
    return make_read_preference(mode, tags)
def parse_read_preference(pref):
    # Make first letter lowercase to match read_pref's modes.
    mode_string = pref.get('mode', 'primary')
    mode_string = mode_string[:1].lower() + mode_string[1:]
    mode = read_preferences.read_pref_mode_from_name(mode_string)
    max_staleness = pref.get('maxStalenessSeconds', -1)
    tag_sets = pref.get('tag_sets')
    return read_preferences.make_read_preference(
        mode, tag_sets=tag_sets, max_staleness=max_staleness)
def _parse_read_preference(options):
    """Parse read preference options."""
    if 'read_preference' in options:
        return options['read_preference']

    mode = options.get('readpreference', 0)
    tags = options.get('readpreferencetags')
    max_staleness = options.get('maxstalenessseconds', -1)
    return make_read_preference(mode, tags, max_staleness)
def parse_read_preference(pref):
    # Make first letter lowercase to match read_pref's modes.
    mode_string = pref.get('mode', 'primary')
    mode_string = mode_string[:1].lower() + mode_string[1:]
    mode = read_preferences.read_pref_mode_from_name(mode_string)
    max_staleness = pref.get('maxStalenessSeconds', -1)
    tag_sets = pref.get('tag_sets')
    return read_preferences.make_read_preference(
        mode, tag_sets=tag_sets, max_staleness=max_staleness)
Beispiel #12
0
def _parse_read_preference(options):
    """Parse read preference options."""
    if 'read_preference' in options:
        return options['read_preference']

    name = options.get('readpreference', 'primary')
    mode = read_pref_mode_from_name(name)
    tags = options.get('readpreferencetags')
    max_staleness = options.get('maxstalenessseconds', -1)
    return make_read_preference(mode, tags, max_staleness)
def _parse_read_preference(options):
    """Parse read preference options."""
    if 'read_preference' in options:
        return options['read_preference']

    mode = options.get('readpreference', 0)
    tags = options.get('readpreferencetags')
    # common.validate() has converted from ms to seconds.
    max_staleness = options.get('maxstalenessms')
    return make_read_preference(mode, tags, max_staleness)
def _parse_read_preference(options):
    """Parse read preference options."""
    if 'read_preference' in options:
        return options['read_preference']

    mode = options.get('readpreference', 0)
    tags = options.get('readpreferencetags')
    # common.validate() has converted from ms to seconds.
    max_staleness = options.get('maxstalenessms', 0)
    return make_read_preference(mode, tags, max_staleness)
Beispiel #15
0
def _parse_read_preference(options):
    """Parse read preference options."""
    if 'read_preference' in options:
        return options['read_preference']

    name = options.get('readpreference', 'primary')
    mode = read_pref_mode_from_name(name)
    tags = options.get('readpreferencetags')
    max_staleness = options.get('maxstalenessseconds', -1)
    return make_read_preference(mode, tags, max_staleness)
Beispiel #16
0
def _parse_read_preference(options):
    """Parse read preference options."""
    if "read_preference" in options:
        return options["read_preference"]

    name = options.get("readpreference", "primary")
    mode = read_pref_mode_from_name(name)
    tags = options.get("readpreferencetags")
    max_staleness = options.get("maxstalenessseconds", -1)
    return make_read_preference(mode, tags, max_staleness)
    def test(self):
        self.setup_server(operation.wire_version)
        if operation.op_type == 'always-use-secondary':
            slave_ok = True
        elif operation.op_type == 'may-use-secondary':
            slave_ok = mode != 'primary'
        elif operation.op_type == 'must-use-primary':
            slave_ok = False
        else:
            assert False, 'unrecognized op_type %r' % operation.op_type

        pref = make_read_preference(read_pref_mode_from_name(mode),
                                    tag_sets=None)

        client = MongoClient(self.mongoses_uri, read_preference=pref)
        self.addCleanup(client.close)
        with going(operation.function, client):
            request = self.q.get(timeout=1)
            request.reply(operation.reply)

        if slave_ok:
            self.assertTrue(request.slave_ok, 'SlaveOkay not set')
        else:
            self.assertFalse(request.slave_ok, 'SlaveOkay set')
    def run_scenario(self):

        # Initialize topologies.
        seeds, hosts = get_addresses(
            scenario_def['topology_description']['servers'])

        # "Eligible servers" is defined in the server selection spec as
        # the set of servers matching both the ReadPreference's mode
        # and tag sets.
        top_latency = Topology(
            TopologySettings(seeds=seeds, monitor_class=MockMonitor,
                             pool_class=MockPool))
        # "In latency window" is defined in the server selection
        # spec as the subset of suitable_servers that falls within the
        # allowable latency window.
        top_suitable = Topology(
            TopologySettings(seeds=seeds, local_threshold_ms=1000000,
                             monitor_class=MockMonitor,
                             pool_class=MockPool))

        # Update topologies with server descriptions.
        for server in scenario_def['topology_description']['servers']:
            server_description = make_server_description(server, hosts)
            top_suitable.on_change(server_description)
            top_latency.on_change(server_description)

        # Create server selector.
        if scenario_def["operation"] == "write":
            instance = writable_server_selector
        else:
            # Make first letter lowercase to match read_pref's modes.
            mode_string = scenario_def['read_preference']['mode']
            if mode_string:
                mode_string = mode_string[:1].lower() + mode_string[1:]

            mode = read_preferences.read_pref_mode_from_name(mode_string)
            tag_sets = None
            if scenario_def['read_preference']['tag_sets'][0]:
                tag_sets = scenario_def['read_preference']['tag_sets']
            instance = read_preferences.make_read_preference(mode, tag_sets)

        # Select servers.
        if not scenario_def['suitable_servers']:
            self.assertRaises(AutoReconnect, top_suitable.select_server,
                              instance,
                              server_selection_timeout=0)
            return

        if not scenario_def['in_latency_window']:
            self.assertRaises(AutoReconnect, top_latency.select_server,
                              instance,
                              server_selection_timeout=0)
            return

        actual_suitable_s = top_suitable.select_servers(instance,
                                                    server_selection_timeout=0)
        actual_latency_s = top_latency.select_servers(instance,
                                                    server_selection_timeout=0)

        expected_suitable_servers = {}
        for server in scenario_def['suitable_servers']:
            server_description = make_server_description(server, hosts)
            expected_suitable_servers[server['address']] = server_description

        actual_suitable_servers = {}
        for s in actual_suitable_s:
            actual_suitable_servers["%s:%d" % (s.description.address[0],
                                    s.description.address[1])] = s.description

        self.assertEqual(len(actual_suitable_servers),
                         len(expected_suitable_servers))
        for k, actual in actual_suitable_servers.items():
            expected = expected_suitable_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)

        expected_latency_servers = {}
        for server in scenario_def['in_latency_window']:
            server_description = make_server_description(server, hosts)
            expected_latency_servers[server['address']] = server_description

        actual_latency_servers = {}
        for s in actual_latency_s:
            actual_latency_servers["%s:%d" %
                                   (s.description.address[0],
                                    s.description.address[1])] = s.description

        self.assertEqual(len(actual_latency_servers),
                         len(expected_latency_servers))
        for k, actual in actual_latency_servers.items():
            expected = expected_latency_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)
    def run_scenario(self):
        # Initialize topologies.
        if 'heartbeatFrequencyMS' in scenario_def:
            frequency = int(scenario_def['heartbeatFrequencyMS']) / 1000.0
        else:
            frequency = HEARTBEAT_FREQUENCY

        settings = dict(
            monitor_class=MockMonitor,
            heartbeat_frequency=frequency,
            pool_class=MockPool)

        settings['seeds'], hosts = get_addresses(
            scenario_def['topology_description']['servers'])

        # "Eligible servers" is defined in the server selection spec as
        # the set of servers matching both the ReadPreference's mode
        # and tag sets.
        top_latency = Topology(TopologySettings(**settings))

        # "In latency window" is defined in the server selection
        # spec as the subset of suitable_servers that falls within the
        # allowable latency window.
        settings['local_threshold_ms'] = 1000000
        top_suitable = Topology(TopologySettings(**settings))

        # Update topologies with server descriptions.
        for server in scenario_def['topology_description']['servers']:
            server_description = make_server_description(server, hosts)
            top_suitable.on_change(server_description)
            top_latency.on_change(server_description)

        # Create server selector.
        if scenario_def.get("operation") == "write":
            pref = writable_server_selector
        else:
            # Make first letter lowercase to match read_pref's modes.
            pref_def = scenario_def['read_preference']
            mode_string = pref_def.get('mode', 'primary')
            mode_string = mode_string[:1].lower() + mode_string[1:]
            mode = read_preferences.read_pref_mode_from_name(mode_string)
            max_staleness = pref_def.get('maxStalenessSeconds', -1)
            tag_sets = pref_def.get('tag_sets')

            if scenario_def.get('error'):
                with self.assertRaises((ConfigurationError, ValueError)):
                    # Error can be raised when making Read Pref or selecting.
                    pref = read_preferences.make_read_preference(
                        mode, tag_sets=tag_sets, max_staleness=max_staleness)

                    top_latency.select_server(pref)
                return

            pref = read_preferences.make_read_preference(
                mode, tag_sets=tag_sets, max_staleness=max_staleness)

        # Select servers.
        if not scenario_def.get('suitable_servers'):
            with self.assertRaises(AutoReconnect):
                top_suitable.select_server(pref, server_selection_timeout=0)

            return

        if not scenario_def['in_latency_window']:
            with self.assertRaises(AutoReconnect):
                top_latency.select_server(pref, server_selection_timeout=0)

            return

        actual_suitable_s = top_suitable.select_servers(
            pref, server_selection_timeout=0)
        actual_latency_s = top_latency.select_servers(
            pref, server_selection_timeout=0)

        expected_suitable_servers = {}
        for server in scenario_def['suitable_servers']:
            server_description = make_server_description(server, hosts)
            expected_suitable_servers[server['address']] = server_description

        actual_suitable_servers = {}
        for s in actual_suitable_s:
            actual_suitable_servers["%s:%d" % (s.description.address[0],
                                    s.description.address[1])] = s.description

        self.assertEqual(len(actual_suitable_servers),
                         len(expected_suitable_servers))
        for k, actual in actual_suitable_servers.items():
            expected = expected_suitable_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)

        expected_latency_servers = {}
        for server in scenario_def['in_latency_window']:
            server_description = make_server_description(server, hosts)
            expected_latency_servers[server['address']] = server_description

        actual_latency_servers = {}
        for s in actual_latency_s:
            actual_latency_servers["%s:%d" %
                                   (s.description.address[0],
                                    s.description.address[1])] = s.description

        self.assertEqual(len(actual_latency_servers),
                         len(expected_latency_servers))
        for k, actual in actual_latency_servers.items():
            expected = expected_latency_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)
    def run_scenario(self):
        dbname = scenario_def['database_name']
        collname = scenario_def['collection_name']

        coll = self.client[dbname][collname]
        coll.drop()
        coll.insert_many(scenario_def['data'])
        self.listener.results.clear()
        name = camel_to_snake(test['operation']['name'])
        if 'read_preference' in test['operation']:
            mode = read_pref_mode_from_name(
                test['operation']['read_preference']['mode'])
            coll = coll.with_options(
                read_preference=make_read_preference(mode, None))

        test_args = test['operation']['arguments']
        if 'writeConcern' in test_args:
            concern = test_args.pop('writeConcern')
            coll = coll.with_options(write_concern=WriteConcern(**concern))
        args = {}
        for arg in test_args:
            args[camel_to_snake(arg)] = test_args[arg]

        if name == 'bulk_write':
            bulk_args = []
            for request in args['requests']:
                opname = next(iter(request))
                klass = opname[0:1].upper() + opname[1:]
                arg = getattr(pymongo, klass)(**request[opname])
                bulk_args.append(arg)
            try:
                coll.bulk_write(bulk_args, args.get('ordered', True))
            except OperationFailure:
                pass
        elif name == 'find':
            if 'sort' in args:
                args['sort'] = list(args['sort'].items())
            for arg in 'skip', 'limit':
                if arg in args:
                    args[arg] = int(args[arg])
            try:
                # Iterate the cursor.
                tuple(coll.find(**args))
            except OperationFailure:
                pass
            # Wait for the killCursors thread to run if necessary.
            if 'limit' in args and client_context.version[:2] < (3, 1):
                self.client._kill_cursors_executor.wake()
                started = self.listener.results['started']
                succeeded = self.listener.results['succeeded']
                wait_until(lambda: started[-1].command_name == 'killCursors',
                           "publish a start event for killCursors.")
                wait_until(lambda: succeeded[-1].command_name == 'killCursors',
                           "publish a succeeded event for killCursors.")
        else:
            try:
                getattr(coll, name)(**args)
            except OperationFailure:
                pass

        res = self.listener.results
        for expectation in test['expectations']:
            event_type = next(iter(expectation))
            if event_type == "command_started_event":
                event = res['started'][0] if len(res['started']) else None
                if event is not None:
                    # The tests substitute 42 for any number other than 0.
                    if (event.command_name == 'getMore'
                            and event.command['getMore']):
                        event.command['getMore'] = 42
                    elif event.command_name == 'killCursors':
                        event.command['cursors'] = [42]
            elif event_type == "command_succeeded_event":
                event = (res['succeeded'].pop(0)
                         if len(res['succeeded']) else None)
                if event is not None:
                    reply = event.reply
                    # The tests substitute 42 for any number other than 0,
                    # and "" for any error message.
                    if 'writeErrors' in reply:
                        for doc in reply['writeErrors']:
                            doc['code'] = 42
                            doc['errmsg'] = ""
                    elif 'cursor' in reply:
                        if reply['cursor']['id']:
                            reply['cursor']['id'] = 42
                    elif event.command_name == 'killCursors':
                        # Make the tests continue to pass when the killCursors
                        # command is actually in use.
                        if 'cursorsKilled' in reply:
                            reply.pop('cursorsKilled')
                        reply['cursorsUnknown'] = [42]
                    # Found succeeded event. Pop related started event.
                    res['started'].pop(0)
            elif event_type == "command_failed_event":
                event = res['failed'].pop(0) if len(res['failed']) else None
                if event is not None:
                    # Found failed event. Pop related started event.
                    res['started'].pop(0)
            else:
                self.fail("Unknown event type")

            if event is None:
                event_name = event_type.split('_')[1]
                self.fail("Expected %s event for %s command. Actual "
                          "results:%s" %
                          (event_name, expectation[event_type]['command_name'],
                           format_actual_results(res)))

            for attr, expected in expectation[event_type].items():
                actual = getattr(event, attr)
                if isinstance(expected, dict):
                    for key, val in expected.items():
                        self.assertEqual(val, actual[key])
                else:
                    self.assertEqual(actual, expected)
    def run_scenario(self):
        self.assertTrue(scenario_def['tests'], "tests cannot be empty")
        dbname = scenario_def['database_name']
        collname = scenario_def['collection_name']

        # Clear the kill cursors queue.
        self.client._kill_cursors_executor.wake()

        for test in scenario_def['tests']:
            coll = self.client[dbname][collname]
            coll.drop()
            coll.insert_many(scenario_def['data'])
            self.listener.results.clear()
            name = camel_to_snake(test['operation']['name'])
            args = test['operation']['arguments']
            # Don't send $readPreference to mongos before 2.4.
            if (client_context.version.at_least(2, 4, 0)
                    and 'readPreference' in args):
                pref = make_read_preference(
                    args['readPreference']['mode'], None)
                coll = coll.with_options(read_preference=pref)
            if 'writeConcern' in args:
                coll = coll.with_options(
                    write_concern=WriteConcern(**args['writeConcern']))
            for arg in args:
                args[camel_to_snake(arg)] = args.pop(arg)

            if name == 'bulk_write':
                bulk_args = []
                for request in args['requests']:
                    opname = next(iter(request))
                    klass = opname[0:1].upper() + opname[1:]
                    arg = getattr(pymongo, klass)(**request[opname])
                    bulk_args.append(arg)
                try:
                    coll.bulk_write(bulk_args, args.get('ordered', True))
                except OperationFailure:
                    pass
            elif name == 'find':
                if 'sort' in args:
                    args['sort'] = list(args['sort'].items())
                try:
                    # Iterate the cursor.
                    tuple(coll.find(**args))
                except OperationFailure:
                    pass
                # Wait for the killCursors thread to run.
                if 'limit' in args:
                    started = self.listener.results['started']
                    wait_until(
                        lambda: started[-1].command_name == 'killCursors',
                        "publish a start event for killCursors.")
            else:
                try:
                    getattr(coll, name)(**args)
                except OperationFailure:
                    pass

            for expectation in test['expectations']:
                event_type = next(iter(expectation))
                if event_type == "command_started_event":
                    event = self.listener.results['started'].pop(0)
                    # The tests substitute 42 for any number other than 0.
                    if event.command_name == 'getMore':
                        event.command['getMore'] = 42
                    elif event.command_name == 'killCursors':
                        event.command['cursors'] = [42]
                elif event_type == "command_succeeded_event":
                    event = self.listener.results['succeeded'].pop(0)
                    reply = event.reply
                    # The tests substitute 42 for any number other than 0,
                    # and "" for any error message.
                    if 'writeErrors' in reply:
                        for doc in reply['writeErrors']:
                            doc['code'] = 42
                            doc['errmsg'] = ""
                    elif 'cursor' in reply:
                        if reply['cursor']['id']:
                            reply['cursor']['id'] = 42
                    elif event.command_name == 'killCursors':
                        # Make the tests continue to pass when the killCursors
                        # command is actually in use.
                        if 'cursorsKilled' in reply:
                            reply.pop('cursorsKilled')
                        reply['cursorsUnknown'] = [42]
                elif event_type == "command_failed_event":
                    event = self.listener.results['failed'].pop(0)
                else:
                    self.fail("Unknown event type")
                for attr, expected in expectation[event_type].items():
                    actual = getattr(event, attr)
                    if isinstance(expected, dict):
                        for key, val in expected.items():
                            self.assertEqual(val, actual[key])
                    else:
                        self.assertEqual(actual, expected)
    def run_scenario(self):
        dbname = scenario_def['database_name']
        collname = scenario_def['collection_name']

        coll = self.client[dbname][collname]
        coll.drop()
        coll.insert_many(scenario_def['data'])
        self.listener.results.clear()
        name = camel_to_snake(test['operation']['name'])
        # Don't send $readPreference to mongos before 2.4.
        if (client_context.version.at_least(2, 4, 0)
                and 'read_preference' in test['operation']):
            mode = read_pref_mode_from_name(
                test['operation']['read_preference']['mode'])
            coll = coll.with_options(
                read_preference=make_read_preference(mode, None))

        test_args = test['operation']['arguments']
        if 'writeConcern' in test_args:
            concern = test_args.pop('writeConcern')
            coll = coll.with_options(
                write_concern=WriteConcern(**concern))
        args = {}
        for arg in test_args:
            args[camel_to_snake(arg)] = test_args[arg]

        if name == 'bulk_write':
            bulk_args = []
            for request in args['requests']:
                opname = next(iter(request))
                klass = opname[0:1].upper() + opname[1:]
                arg = getattr(pymongo, klass)(**request[opname])
                bulk_args.append(arg)
            try:
                coll.bulk_write(bulk_args, args.get('ordered', True))
            except OperationFailure:
                pass
        elif name == 'find':
            if 'sort' in args:
                args['sort'] = list(args['sort'].items())
            try:
                # Iterate the cursor.
                tuple(coll.find(**args))
            except OperationFailure:
                pass
            # Wait for the killCursors thread to run if necessary.
            if 'limit' in args and client_context.version[:2] < (3, 1):
                self.client._kill_cursors_executor.wake()
                started = self.listener.results['started']
                succeeded = self.listener.results['succeeded']
                wait_until(
                    lambda: started[-1].command_name == 'killCursors',
                    "publish a start event for killCursors.")
                wait_until(
                    lambda: succeeded[-1].command_name == 'killCursors',
                    "publish a succeeded event for killCursors.")
        else:
            try:
                getattr(coll, name)(**args)
            except OperationFailure:
                pass

        res = self.listener.results
        for expectation in test['expectations']:
            event_type = next(iter(expectation))
            if event_type == "command_started_event":
                event = res['started'][0] if len(res['started']) else None
                if event is not None:
                    # The tests substitute 42 for any number other than 0.
                    if (event.command_name == 'getMore'
                            and event.command['getMore']):
                        event.command['getMore'] = 42
                    elif event.command_name == 'killCursors':
                        event.command['cursors'] = [42]
            elif event_type == "command_succeeded_event":
                event = (
                    res['succeeded'].pop(0) if len(res['succeeded']) else None)
                if event is not None:
                    reply = event.reply
                    # The tests substitute 42 for any number other than 0,
                    # and "" for any error message.
                    if 'writeErrors' in reply:
                        for doc in reply['writeErrors']:
                            doc['code'] = 42
                            doc['errmsg'] = ""
                    elif 'cursor' in reply:
                        if reply['cursor']['id']:
                            reply['cursor']['id'] = 42
                    elif event.command_name == 'killCursors':
                        # Make the tests continue to pass when the killCursors
                        # command is actually in use.
                        if 'cursorsKilled' in reply:
                            reply.pop('cursorsKilled')
                        reply['cursorsUnknown'] = [42]
                    # Found succeeded event. Pop related started event.
                    res['started'].pop(0)
            elif event_type == "command_failed_event":
                event = res['failed'].pop(0) if len(res['failed']) else None
                if event is not None:
                    # Found failed event. Pop related started event.
                    res['started'].pop(0)
            else:
                self.fail("Unknown event type")

            if event is None:
                event_name = event_type.split('_')[1]
                self.fail(
                    "Expected %s event for %s command. Actual "
                    "results:%s" % (
                        event_name,
                        expectation[event_type]['command_name'],
                        format_actual_results(res)))

            for attr, expected in expectation[event_type].items():
                actual = getattr(event, attr)
                if isinstance(expected, dict):
                    for key, val in expected.items():
                        self.assertEqual(val, actual[key])
                else:
                    self.assertEqual(actual, expected)
    def run_scenario(self):
        self.assertTrue(scenario_def['tests'], "tests cannot be empty")
        dbname = scenario_def['database_name']
        collname = scenario_def['collection_name']

        # Clear the kill cursors queue.
        self.client._kill_cursors_executor.wake()

        for test in scenario_def['tests']:
            coll = self.client[dbname][collname]
            coll.drop()
            coll.insert_many(scenario_def['data'])
            self.listener.results.clear()
            name = camel_to_snake(test['operation']['name'])
            args = test['operation']['arguments']
            # Don't send $readPreference to mongos before 2.4.
            if (client_context.version.at_least(2, 4, 0)
                    and 'readPreference' in args):
                pref = make_read_preference(args['readPreference']['mode'],
                                            None)
                coll = coll.with_options(read_preference=pref)
            if 'writeConcern' in args:
                coll = coll.with_options(write_concern=WriteConcern(
                    **args['writeConcern']))
            for arg in args:
                args[camel_to_snake(arg)] = args.pop(arg)

            if name == 'bulk_write':
                bulk_args = []
                for request in args['requests']:
                    opname = next(iter(request))
                    klass = opname[0:1].upper() + opname[1:]
                    arg = getattr(pymongo, klass)(**request[opname])
                    bulk_args.append(arg)
                try:
                    coll.bulk_write(bulk_args, args.get('ordered', True))
                except OperationFailure:
                    pass
            elif name == 'find':
                if 'limit' in args:
                    # XXX: Skip killCursors test when using the find command.
                    if client_context.version.at_least(3, 1, 1):
                        continue
                    self.listener.remove_command_filter('killCursors')
                if 'sort' in args:
                    args['sort'] = list(args['sort'].items())
                try:
                    # Iterate the cursor.
                    tuple(coll.find(**args))
                except OperationFailure:
                    pass
                # Wait for the killCursors thread to run.
                if 'limit' in args:
                    started = self.listener.results['started']
                    wait_until(
                        lambda: started[-1].command_name == 'killCursors',
                        "publish a start event for killCursors.")
                    self.listener.add_command_filter('killCursors')
            else:
                try:
                    getattr(coll, name)(**args)
                except OperationFailure:
                    pass

            for expectation in test['expectations']:
                event_type = next(iter(expectation))
                if event_type == "command_started_event":
                    event = self.listener.results['started'].pop(0)
                    # The tests substitute 42 for any number other than 0.
                    if event.command_name == 'getMore':
                        event.command['getMore'] = 42
                    elif event.command_name == 'killCursors':
                        event.command['cursors'] = [42]
                elif event_type == "command_succeeded_event":
                    event = self.listener.results['succeeded'].pop(0)
                    reply = event.reply
                    # The tests substitute 42 for any number other than 0,
                    # and "" for any error message.
                    if 'writeErrors' in reply:
                        for doc in reply['writeErrors']:
                            doc['code'] = 42
                            doc['errmsg'] = ""
                    elif 'cursor' in reply:
                        if reply['cursor']['id']:
                            reply['cursor']['id'] = 42
                    elif event.command_name == 'killCursors':
                        # Make the tests continue to pass when the killCursors
                        # command is actually in use.
                        if 'cursorsKilled' in reply:
                            reply.pop('cursorsKilled')
                        reply['cursorsUnknown'] = [42]
                elif event_type == "command_failed_event":
                    event = self.listener.results['failed'].pop(0)
                else:
                    self.fail("Unknown event type")
                for attr, expected in expectation[event_type].items():
                    actual = getattr(event, attr)
                    if isinstance(expected, dict):
                        for key, val in expected.items():
                            self.assertEqual(val, actual[key])
                    else:
                        self.assertEqual(actual, expected)
Beispiel #24
0
    def run_scenario(self):

        # Initialize topologies.
        seeds, hosts = get_addresses(
            scenario_def['topology_description']['servers'])

        # "Eligible servers" is defined in the server selection spec as
        # the set of servers matching both the ReadPreference's mode
        # and tag sets.
        top_latency = Topology(
            TopologySettings(seeds=seeds,
                             monitor_class=MockMonitor,
                             pool_class=MockPool))
        # "In latency window" is defined in the server selection
        # spec as the subset of suitable_servers that falls within the
        # allowable latency window.
        top_suitable = Topology(
            TopologySettings(seeds=seeds,
                             local_threshold_ms=1000000,
                             monitor_class=MockMonitor,
                             pool_class=MockPool))

        # Update topologies with server descriptions.
        for server in scenario_def['topology_description']['servers']:
            server_description = make_server_description(server, hosts)
            top_suitable.on_change(server_description)
            top_latency.on_change(server_description)

        # Create server selector.
        if scenario_def["operation"] == "write":
            instance = writable_server_selector
        else:
            # Make first letter lowercase to match read_pref's modes.
            mode_string = scenario_def['read_preference']['mode']
            if mode_string:
                mode_string = mode_string[:1].lower() + mode_string[1:]

            mode = read_preferences.read_pref_mode_from_name(mode_string)
            tag_sets = None
            if scenario_def['read_preference']['tag_sets'][0]:
                tag_sets = scenario_def['read_preference']['tag_sets']
            instance = read_preferences.make_read_preference(mode, tag_sets)

        # Select servers.
        if not scenario_def['suitable_servers']:
            self.assertRaises(AutoReconnect,
                              top_suitable.select_server,
                              instance,
                              server_selection_timeout=0)
            return

        if not scenario_def['in_latency_window']:
            self.assertRaises(AutoReconnect,
                              top_latency.select_server,
                              instance,
                              server_selection_timeout=0)
            return

        actual_suitable_s = top_suitable.select_servers(
            instance, server_selection_timeout=0)
        actual_latency_s = top_latency.select_servers(
            instance, server_selection_timeout=0)

        expected_suitable_servers = {}
        for server in scenario_def['suitable_servers']:
            server_description = make_server_description(server, hosts)
            expected_suitable_servers[server['address']] = server_description

        actual_suitable_servers = {}
        for s in actual_suitable_s:
            actual_suitable_servers["%s:%d" %
                                    (s.description.address[0],
                                     s.description.address[1])] = s.description

        self.assertEqual(len(actual_suitable_servers),
                         len(expected_suitable_servers))
        for k, actual in actual_suitable_servers.items():
            expected = expected_suitable_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)

        expected_latency_servers = {}
        for server in scenario_def['in_latency_window']:
            server_description = make_server_description(server, hosts)
            expected_latency_servers[server['address']] = server_description

        actual_latency_servers = {}
        for s in actual_latency_s:
            actual_latency_servers["%s:%d" %
                                   (s.description.address[0],
                                    s.description.address[1])] = s.description

        self.assertEqual(len(actual_latency_servers),
                         len(expected_latency_servers))
        for k, actual in actual_latency_servers.items():
            expected = expected_latency_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)
Beispiel #25
0
    def run_scenario(self):
        # Initialize topologies.
        if 'heartbeatFrequencyMS' in scenario_def:
            frequency = int(scenario_def['heartbeatFrequencyMS']) / 1000.0
        else:
            frequency = HEARTBEAT_FREQUENCY

        settings = dict(monitor_class=MockMonitor,
                        heartbeat_frequency=frequency,
                        pool_class=MockPool)

        settings['seeds'], hosts = get_addresses(
            scenario_def['topology_description']['servers'])

        # "Eligible servers" is defined in the server selection spec as
        # the set of servers matching both the ReadPreference's mode
        # and tag sets.
        top_latency = Topology(TopologySettings(**settings))
        top_latency.open()

        # "In latency window" is defined in the server selection
        # spec as the subset of suitable_servers that falls within the
        # allowable latency window.
        settings['local_threshold_ms'] = 1000000
        top_suitable = Topology(TopologySettings(**settings))
        top_suitable.open()

        # Update topologies with server descriptions.
        for server in scenario_def['topology_description']['servers']:
            server_description = make_server_description(server, hosts)
            top_suitable.on_change(server_description)
            top_latency.on_change(server_description)

        # Create server selector.
        if scenario_def.get("operation") == "write":
            pref = writable_server_selector
        else:
            # Make first letter lowercase to match read_pref's modes.
            pref_def = scenario_def['read_preference']
            mode_string = pref_def.get('mode', 'primary')
            mode_string = mode_string[:1].lower() + mode_string[1:]
            mode = read_preferences.read_pref_mode_from_name(mode_string)
            max_staleness = pref_def.get('maxStalenessSeconds', -1)
            tag_sets = pref_def.get('tag_sets')

            if scenario_def.get('error'):
                with self.assertRaises((ConfigurationError, ValueError)):
                    # Error can be raised when making Read Pref or selecting.
                    pref = read_preferences.make_read_preference(
                        mode, tag_sets=tag_sets, max_staleness=max_staleness)

                    top_latency.select_server(pref)
                return

            pref = read_preferences.make_read_preference(
                mode, tag_sets=tag_sets, max_staleness=max_staleness)

        # Select servers.
        if not scenario_def.get('suitable_servers'):
            with self.assertRaises(AutoReconnect):
                top_suitable.select_server(pref, server_selection_timeout=0)

            return

        if not scenario_def['in_latency_window']:
            with self.assertRaises(AutoReconnect):
                top_latency.select_server(pref, server_selection_timeout=0)

            return

        actual_suitable_s = top_suitable.select_servers(
            pref, server_selection_timeout=0)
        actual_latency_s = top_latency.select_servers(
            pref, server_selection_timeout=0)

        expected_suitable_servers = {}
        for server in scenario_def['suitable_servers']:
            server_description = make_server_description(server, hosts)
            expected_suitable_servers[server['address']] = server_description

        actual_suitable_servers = {}
        for s in actual_suitable_s:
            actual_suitable_servers["%s:%d" %
                                    (s.description.address[0],
                                     s.description.address[1])] = s.description

        self.assertEqual(len(actual_suitable_servers),
                         len(expected_suitable_servers))
        for k, actual in actual_suitable_servers.items():
            expected = expected_suitable_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)

        expected_latency_servers = {}
        for server in scenario_def['in_latency_window']:
            server_description = make_server_description(server, hosts)
            expected_latency_servers[server['address']] = server_description

        actual_latency_servers = {}
        for s in actual_latency_s:
            actual_latency_servers["%s:%d" %
                                   (s.description.address[0],
                                    s.description.address[1])] = s.description

        self.assertEqual(len(actual_latency_servers),
                         len(expected_latency_servers))
        for k, actual in actual_latency_servers.items():
            expected = expected_latency_servers[k]
            self.assertEqual(expected.address, actual.address)
            self.assertEqual(expected.server_type, actual.server_type)
            self.assertEqual(expected.round_trip_time, actual.round_trip_time)
            self.assertEqual(expected.tags, actual.tags)
            self.assertEqual(expected.all_hosts, actual.all_hosts)
    def run_scenario(self):
        self.assertTrue(scenario_def['tests'], "tests cannot be empty")
        dbname = scenario_def['database_name']
        collname = scenario_def['collection_name']

        for test in scenario_def['tests']:
            ver = client_context.version[:2]
            if "ignore_if_server_version_greater_than" in test:
                version = test["ignore_if_server_version_greater_than"]
                if ver > tuple(map(int, version.split("."))):
                    continue
            if "ignore_if_server_version_less_than" in test:
                version = test["ignore_if_server_version_less_than"]
                if ver < tuple(map(int, version.split("."))):
                    continue
            if "ignore_if_topology_type" in test:
                types = set(test["ignore_if_topology_type"])
                if "sharded" in types and client_context.is_mongos:
                    continue

            coll = self.client[dbname][collname]
            coll.drop()
            coll.insert_many(scenario_def['data'])
            self.listener.results.clear()
            name = camel_to_snake(test['operation']['name'])
            # Don't send $readPreference to mongos before 2.4.
            if (client_context.version.at_least(2, 4, 0)
                    and 'read_preference' in test['operation']):
                mode = read_pref_mode_from_name(
                    test['operation']['read_preference']['mode'])
                coll = coll.with_options(
                    read_preference=make_read_preference(mode, None))

            test_args = test['operation']['arguments']
            if 'writeConcern' in test_args:
                concern = test_args.pop('writeConcern')
                coll = coll.with_options(write_concern=WriteConcern(**concern))
            args = {}
            for arg in test_args:
                args[camel_to_snake(arg)] = test_args[arg]

            if name == 'bulk_write':
                bulk_args = []
                for request in args['requests']:
                    opname = next(iter(request))
                    klass = opname[0:1].upper() + opname[1:]
                    arg = getattr(pymongo, klass)(**request[opname])
                    bulk_args.append(arg)
                try:
                    coll.bulk_write(bulk_args, args.get('ordered', True))
                except OperationFailure:
                    pass
            elif name == 'find':
                if 'sort' in args:
                    args['sort'] = list(args['sort'].items())
                try:
                    # Iterate the cursor.
                    tuple(coll.find(**args))
                except OperationFailure:
                    pass
                # Wait for the killCursors thread to run if necessary.
                if 'limit' in args and client_context.version[:2] < (3, 1):
                    self.client._kill_cursors_executor.wake()
                    started = self.listener.results['started']
                    wait_until(
                        lambda: started[-1].command_name == 'killCursors',
                        "publish a start event for killCursors.")
            else:
                try:
                    getattr(coll, name)(**args)
                except OperationFailure:
                    pass

            for expectation in test['expectations']:
                event_type = next(iter(expectation))
                if event_type == "command_started_event":
                    event = self.listener.results['started'].pop(0)
                    # The tests substitute 42 for any number other than 0.
                    if (event.command_name == 'getMore'
                            and event.command['getMore']):
                        event.command['getMore'] = 42
                    elif event.command_name == 'killCursors':
                        event.command['cursors'] = [42]
                elif event_type == "command_succeeded_event":
                    event = self.listener.results['succeeded'].pop(0)
                    reply = event.reply
                    # The tests substitute 42 for any number other than 0,
                    # and "" for any error message.
                    if 'writeErrors' in reply:
                        for doc in reply['writeErrors']:
                            doc['code'] = 42
                            doc['errmsg'] = ""
                    elif 'cursor' in reply:
                        if reply['cursor']['id']:
                            reply['cursor']['id'] = 42
                    elif event.command_name == 'killCursors':
                        # Make the tests continue to pass when the killCursors
                        # command is actually in use.
                        if 'cursorsKilled' in reply:
                            reply.pop('cursorsKilled')
                        reply['cursorsUnknown'] = [42]
                elif event_type == "command_failed_event":
                    event = self.listener.results['failed'].pop(0)
                else:
                    self.fail("Unknown event type")
                for attr, expected in expectation[event_type].items():
                    actual = getattr(event, attr)
                    if isinstance(expected, dict):
                        for key, val in expected.items():
                            self.assertEqual(val, actual[key])
                    else:
                        self.assertEqual(actual, expected)
    def run_operation(self, sessions, collection, operation):
        session = None
        name = camel_to_snake(operation['name'])
        self.transaction_test_debug(name)
        session_name = operation['arguments'].pop('session', None)
        if session_name:
            session = sessions[session_name]

        # Combine arguments with options and handle special cases.
        arguments = operation['arguments']
        arguments.update(arguments.pop("options", {}))
        pref = write_c = read_c = None
        if 'readPreference' in arguments:
            pref = make_read_preference(read_pref_mode_from_name(
                arguments.pop('readPreference')['mode']),
                                        tag_sets=None)

        if 'writeConcern' in arguments:
            write_c = WriteConcern(**dict(arguments.pop('writeConcern')))

        if 'readConcern' in arguments:
            read_c = ReadConcern(**dict(arguments.pop('readConcern')))

        if name == 'start_transaction':
            cmd = partial(session.start_transaction,
                          write_concern=write_c,
                          read_concern=read_c)
        elif name in ('commit_transaction', 'abort_transaction'):
            cmd = getattr(session, name)
        else:
            collection = collection.with_options(write_concern=write_c,
                                                 read_concern=read_c,
                                                 read_preference=pref)

            cmd = getattr(collection, name)
            arguments['session'] = session

        for arg_name in list(arguments):
            c2s = camel_to_snake(arg_name)
            # PyMongo accepts sort as list of tuples. Asserting len=1
            # because ordering dicts from JSON in 2.6 is unwieldy.
            if arg_name == "sort":
                sort_dict = arguments[arg_name]
                assert len(sort_dict) == 1, 'test can only have 1 sort key'
                arguments[arg_name] = list(iteritems(sort_dict))
            # Named "key" instead not fieldName.
            if arg_name == "fieldName":
                arguments["key"] = arguments.pop(arg_name)
            # Aggregate uses "batchSize", while find uses batch_size.
            elif arg_name == "batchSize" and name == "aggregate":
                continue
            # Requires boolean returnDocument.
            elif arg_name == "returnDocument":
                arguments[c2s] = arguments[arg_name] == "After"
            elif c2s == "requests":
                # Parse each request into a bulk write model.
                requests = []
                for request in arguments["requests"]:
                    bulk_model = camel_to_upper_camel(request["name"])
                    bulk_class = getattr(operations, bulk_model)
                    bulk_arguments = camel_to_snake_args(request["arguments"])
                    requests.append(bulk_class(**dict(bulk_arguments)))
                arguments["requests"] = requests
            else:
                arguments[c2s] = arguments.pop(arg_name)

        result = cmd(**dict(arguments))

        if name == "aggregate":
            if arguments["pipeline"] and "$out" in arguments["pipeline"][-1]:
                out = collection.database[arguments["pipeline"][-1]["$out"]]
                return out.find()

        if isinstance(result, Cursor) or isinstance(result, CommandCursor):
            return list(result)

        return result