def test_combination_federate():

    broker = createBroker()

    cfed = h.helicsCreateCombinationFederateFromConfig(
        os.path.join(CURRENT_DIRECTORY, "combinationfederate.json"))

    assert h.helicsFederateIsValid(cfed)

    assert h.helicsFederateGetEndpointCount(cfed) == 2
    assert h.helicsFederateGetFilterCount(cfed) == 0
    assert h.helicsFederateGetInputCount(cfed) == 2

    ept = h.helicsFederateGetEndpointByIndex(cfed, 0)

    assert h.helicsEndpointGetName(ept) == "ept1"

    ipt = h.helicsFederateGetInputByIndex(cfed, 1)
    assert h.helicsInputGetExtractionUnits(ipt) == ""
    assert h.helicsSubscriptionGetKey(ipt) == "comboFed/pub2"

    h.helicsEndpointClearMessages(ept)

    h.helicsFederateDestroy(cfed)
    h.helicsFederateFree(cfed)
    h.helicsBrokerDestroy(broker)
    h.helicsCloseLibrary()
Beispiel #2
0
def test_valuefederate_test_file_load():

    filename = os.path.join(CURRENT_DIRECTORY, "valuefederate.json")
    vFed = h.helicsCreateValueFederateFromConfig(filename)

    name = h.helicsFederateGetName(vFed)
    assert name == "valueFed"

    assert h.helicsFederateGetInputCount(vFed) == 3
    assert h.helicsFederateGetPublicationCount(vFed) == 2

    h.helicsFederateFinalize(vFed)
    h.helicsFederateFree(vFed)
    h.helicsCloseLibrary()
Beispiel #3
0
    measured_R = charging_V / measured_A
    SOC_estimate = np.interp(measured_R, effective_R, socs)

    return SOC_estimate


if __name__ == "__main__":
    np.random.seed(1490)

    ##############  Registering  federate from json  ##########################
    fed = h.helicsCreateCombinationFederateFromConfig("ChargerConfig.json")
    federate_name = h.helicsFederateGetName(fed)
    logger.info(f'Created federate {federate_name}')
    end_count = h.helicsFederateGetEndpointCount(fed)
    logger.info(f'\tNumber of endpoints: {end_count}')
    sub_count = h.helicsFederateGetInputCount(fed)
    logger.info(f'\tNumber of subscriptions: {sub_count}')
    pub_count = h.helicsFederateGetPublicationCount(fed)
    logger.info(f'\tNumber of publications: {pub_count}')
    print(f'Created federate {federate_name}')
    print(f'\tNumber of endpoints: {end_count}')
    print(f'\tNumber of subscriptions: {sub_count}')
    print(f'\tNumber of publications: {pub_count}')

    # Diagnostics to confirm JSON config correctly added the required
    #   endpoints, publications, and subscriptions.
    endid = {}
    for i in range(0, end_count):
        endid[i] = h.helicsFederateGetEndpointByIndex(fed, i)
        end_name = h.helicsEndpointGetName(endid[i])
        logger.debug(f'\tRegistered Endpoint ---> {end_name}')
Beispiel #4
0
def test_misc_api():
    fedInfo1 = h.helicsCreateFederateInfo()
    h.helicsFederateInfoSetCoreInitString(fedInfo1, "-f 1")
    h.helicsFederateInfoSetCoreName(fedInfo1, "core3")
    h.helicsFederateInfoSetCoreType(fedInfo1, 3)
    h.helicsFederateInfoSetCoreTypeFromString(fedInfo1, "zmq")
    h.helicsFederateInfoSetFlagOption(fedInfo1, 1, True)
    h.helicsFederateInfoSetTimeProperty(fedInfo1,
                                        h.HELICS_PROPERTY_TIME_INPUT_DELAY,
                                        1.0)
    h.helicsFederateInfoSetIntegerProperty(fedInfo1,
                                           h.HELICS_PROPERTY_INT_LOG_LEVEL, 1)
    h.helicsFederateInfoSetIntegerProperty(
        fedInfo1, h.HELICS_PROPERTY_INT_MAX_ITERATIONS, 100)
    h.helicsFederateInfoSetTimeProperty(fedInfo1,
                                        h.HELICS_PROPERTY_TIME_OUTPUT_DELAY,
                                        1.0)
    h.helicsFederateInfoSetTimeProperty(fedInfo1,
                                        h.HELICS_PROPERTY_TIME_PERIOD, 1.0)
    h.helicsFederateInfoSetTimeProperty(fedInfo1, h.HELICS_PROPERTY_TIME_DELTA,
                                        1.0)
    h.helicsFederateInfoSetTimeProperty(fedInfo1,
                                        h.HELICS_PROPERTY_TIME_OFFSET, 0.1)
    h.helicsFederateInfoFree(fedInfo1)

    broker3 = h.helicsCreateBroker("zmq", "broker3",
                                   "--federates 1 --loglevel 1")
    fedInfo2 = h.helicsCreateFederateInfo()
    coreInitString = "--federates 1"
    h.helicsFederateInfoSetCoreInitString(fedInfo2, coreInitString)
    h.helicsFederateInfoSetCoreTypeFromString(fedInfo2, "zmq")
    h.helicsFederateInfoSetIntegerProperty(fedInfo2,
                                           h.HELICS_PROPERTY_INT_LOG_LEVEL, 1)
    h.helicsFederateInfoSetTimeProperty(fedInfo2, h.HELICS_PROPERTY_TIME_DELTA,
                                        1.0)
    fed1 = h.helicsCreateCombinationFederate("fed1", fedInfo2)
    fed2 = h.helicsFederateClone(fed1)
    _ = h.helicsGetFederateByName("fed1")
    h.helicsFederateSetFlagOption(fed2, 1, False)

    h.helicsFederateSetTimeProperty(fed2, h.HELICS_PROPERTY_TIME_INPUT_DELAY,
                                    1.0)
    h.helicsFederateSetIntegerProperty(fed1, h.HELICS_PROPERTY_INT_LOG_LEVEL,
                                       1)
    h.helicsFederateSetIntegerProperty(fed2,
                                       h.HELICS_PROPERTY_INT_MAX_ITERATIONS,
                                       100)
    h.helicsFederateSetTimeProperty(fed2, h.HELICS_PROPERTY_TIME_OUTPUT_DELAY,
                                    1.0)
    h.helicsFederateSetTimeProperty(fed2, h.HELICS_PROPERTY_TIME_PERIOD, 0.0)
    h.helicsFederateSetTimeProperty(fed2, h.HELICS_PROPERTY_TIME_DELTA, 1.0)

    _ = h.helicsFederateRegisterCloningFilter(fed1, "fed1/Ep1")
    fed1DestinationFilter = h.helicsFederateRegisterFilter(
        fed1, h.HELICS_FILTER_TYPE_DELAY, "fed1DestinationFilter")
    h.helicsFilterAddDestinationTarget(fed1DestinationFilter, "Ep2")

    ep1 = h.helicsFederateRegisterEndpoint(fed1, "Ep1", "string")
    ep2 = h.helicsFederateRegisterGlobalEndpoint(fed1, "Ep2", "string")
    pub1 = h.helicsFederateRegisterGlobalPublication(fed1, "pub1",
                                                     h.HELICS_DATA_TYPE_DOUBLE,
                                                     "")
    pub2 = h.helicsFederateRegisterGlobalTypePublication(
        fed1, "pub2", "complex", "")

    sub1 = h.helicsFederateRegisterSubscription(fed1, "pub1")
    sub2 = h.helicsFederateRegisterSubscription(fed1, "pub2")
    h.helicsInputAddTarget(sub2, "Ep2")
    pub3 = h.helicsFederateRegisterPublication(fed1, "pub3",
                                               h.HELICS_DATA_TYPE_STRING, "")

    pub1KeyString = h.helicsPublicationGetKey(pub1)
    pub1TypeString = h.helicsPublicationGetType(pub1)
    pub1UnitsString = h.helicsPublicationGetUnits(pub1)
    sub1KeyString = h.helicsSubscriptionGetKey(sub1)
    sub1UnitsString = h.helicsInputGetUnits(sub1)
    assert "pub1" == pub1KeyString
    assert "double" == pub1TypeString
    assert "" == pub1UnitsString
    assert "pub1" == sub1KeyString
    assert "" == sub1UnitsString

    fed1SourceFilter = h.helicsFederateRegisterFilter(
        fed1, h.HELICS_FILTER_TYPE_DELAY, "fed1SourceFilter")
    h.helicsFilterAddSourceTarget(fed1SourceFilter, "Ep2")
    h.helicsFilterAddDestinationTarget(fed1SourceFilter, "fed1/Ep1")
    h.helicsFilterRemoveTarget(fed1SourceFilter, "fed1/Ep1")
    h.helicsFilterAddSourceTarget(fed1SourceFilter, "Ep2")
    h.helicsFilterRemoveTarget(fed1SourceFilter, "Ep2")

    fed1SourceFilterNameString = h.helicsFilterGetName(fed1SourceFilter)
    assert fed1SourceFilterNameString == "fed1/fed1SourceFilter"

    sub3 = h.helicsFederateRegisterSubscription(fed1, "fed1/pub3", "")
    pub4 = h.helicsFederateRegisterTypePublication(fed1, "pub4", "int", "")

    sub4 = h.helicsFederateRegisterSubscription(fed1, "fed1/pub4", "")
    pub5 = h.helicsFederateRegisterGlobalTypePublication(
        fed1, "pub5", "boolean", "")

    sub5 = h.helicsFederateRegisterSubscription(fed1, "pub5", "")
    pub6 = h.helicsFederateRegisterGlobalPublication(fed1, "pub6",
                                                     h.HELICS_DATA_TYPE_VECTOR,
                                                     "")
    sub6 = h.helicsFederateRegisterSubscription(fed1, "pub6", "")
    pub7 = h.helicsFederateRegisterGlobalPublication(
        fed1, "pub7", h.HELICS_DATA_TYPE_NAMED_POINT, "")
    sub7 = h.helicsFederateRegisterSubscription(fed1, "pub7", "")

    assert """helics.HelicsPublication(name = "pub1", type = "double", units = "", info = "")""" in repr(
        pub1)
    assert """helics.HelicsPublication(name = "pub2", type = "complex", units = "", info = "")""" in repr(
        pub2)
    assert """helics.HelicsPublication(name = "fed1/pub3", type = "string", units = "", info = "")""" in repr(
        pub3)
    assert """helics.HelicsPublication(name = "fed1/pub4", type = "int", units = "", info = "")""" in repr(
        pub4)
    assert """helics.HelicsPublication(name = "pub5", type = "boolean", units = "", info = "")""" in repr(
        pub5)
    assert """helics.HelicsPublication(name = "pub6", type = "double_vector", units = "", info = "")""" in repr(
        pub6)
    assert """helics.HelicsPublication(name = "pub7", type = "named_point", units = "", info = "")""" in repr(
        pub7)
    assert (
        """helics.HelicsInput(name = "_input_18", units = "", injection_units = "", publication_type = "", type = "", target = "pub7", info = "")"""
        in repr(sub7))

    h.helicsInputSetDefaultBoolean(sub5, False)
    h.helicsInputSetDefaultComplex(sub2, -9.9 + 2.5j)
    h.helicsInputSetDefaultDouble(sub1, 3.4)
    h.helicsInputSetDefaultInteger(sub4, 6)
    h.helicsInputSetDefaultNamedPoint(sub7, "hollow", 20.0)
    h.helicsInputSetDefaultString(sub3, "default")
    sub6Default = [3.4, 90.9, 4.5]
    h.helicsInputSetDefaultVector(sub6, sub6Default)
    h.helicsEndpointSubscribe(ep2, "fed1/pub3")
    h.helicsFederateEnterInitializingModeAsync(fed1)
    rs = h.helicsFederateIsAsyncOperationCompleted(fed1)
    if rs == 0:
        time.sleep(0.500)
        rs = h.helicsFederateIsAsyncOperationCompleted(fed1)
        if rs == 0:
            time.sleep(0.500)
            rs = h.helicsFederateIsAsyncOperationCompleted(fed1)
            if rs == 0:
                assert True is False
    h.helicsFederateEnterInitializingModeComplete(fed1)
    h.helicsFederateEnterExecutingModeAsync(fed1)
    h.helicsFederateEnterExecutingModeComplete(fed1)

    assert (
        """helics.HelicsInput(name = "_input_18", units = "", injection_units = "", publication_type = "named_point", type = "", target = "pub7", info = "")"""
        in repr(sub7))

    mesg1 = h.helicsFederateCreateMessage(fed1)
    h.helicsMessageSetString(mesg1, "Hello")
    h.helicsMessageSetSource(mesg1, "fed1/Ep1")
    h.helicsMessageSetOriginalSource(mesg1, "fed1/Ep1")
    h.helicsMessageSetDestination(mesg1, "Ep2")
    h.helicsMessageSetOriginalDestination(mesg1, "Ep2")

    h.helicsEndpointSendMessage(ep1, mesg1)
    mesg1 = h.helicsFederateCreateMessage(fed1)
    h.helicsMessageSetString(mesg1, "There")
    h.helicsMessageSetSource(mesg1, "fed1/Ep1")
    h.helicsMessageSetOriginalSource(mesg1, "fed1/Ep1")
    h.helicsMessageSetDestination(mesg1, "Ep2")
    h.helicsMessageSetOriginalDestination(mesg1, "Ep2")
    h.helicsEndpointSendMessage(ep1, mesg1)
    h.helicsEndpointSetDefaultDestination(ep2, "fed1/Ep1")

    ep1NameString = h.helicsEndpointGetName(ep1)
    ep1TypeString = h.helicsEndpointGetType(ep1)

    assert ep1NameString == "fed1/Ep1"
    assert ep1TypeString == "string"

    _ = h.helicsFederateGetCoreObject(fed1)

    fed1Time = h.helicsFederateGetCurrentTime(fed1)
    assert fed1Time == 0.0
    fed1EndpointCount = h.helicsFederateGetEndpointCount(fed1)
    assert fed1EndpointCount == 2

    fed1NameString = h.helicsFederateGetName(fed1)
    assert fed1NameString == "fed1"

    fed1State = h.helicsFederateGetState(fed1)
    assert fed1State == 2
    fed1PubCount = h.helicsFederateGetPublicationCount(fed1)
    assert fed1PubCount == 7
    fed1SubCount = h.helicsFederateGetInputCount(fed1)
    assert fed1SubCount == 7

    h.helicsPublicationPublishBoolean(pub5, True)
    h.helicsPublicationPublishComplex(pub2, 5.6 + -0.67j)
    h.helicsPublicationPublishDouble(pub1, 457.234)
    h.helicsPublicationPublishInteger(pub4, 1)
    h.helicsPublicationPublishNamedPoint(pub7, "Blah Blah", 20.0)
    h.helicsPublicationPublishString(pub3, "Mayhem")
    pub6Vector = [4.5, 56.5]
    h.helicsPublicationPublishVector(pub6, pub6Vector)
    time.sleep(0.500)
    h.helicsFederateRequestTimeAsync(fed1, 1.0)

    returnTime = h.helicsFederateRequestTimeComplete(fed1)
    assert returnTime == 1.0
    ep2MsgCount = h.helicsEndpointPendingMessages(ep2)
    assert ep2MsgCount == 2
    ep2HasMsg = h.helicsEndpointHasMessage(ep2)
    assert ep2HasMsg == 1

    msg2 = h.helicsEndpointGetMessage(ep2)
    assert h.helicsMessageGetTime(msg2) == 1.0
    assert h.helicsMessageGetString(msg2) == "Hello"
    assert h.helicsMessageGetOriginalSource(msg2) == "fed1/Ep1"
    assert h.helicsMessageGetSource(msg2) == "fed1/Ep1"
    assert h.helicsMessageGetDestination(msg2) == "Ep2"
    assert h.helicsMessageGetOriginalDestination(msg2) == "Ep2"

    fed1MsgCount = h.helicsFederatePendingMessages(fed1)
    assert fed1MsgCount == 1

    assert h.helicsFederateHasMessage(fed1) == 1

    msg3 = h.helicsFederateGetMessage(fed1)
    assert h.helicsMessageGetTime(msg3) == 1.0
    assert h.helicsMessageGetString(msg3) == "There"
    assert h.helicsMessageGetOriginalSource(msg3) == "fed1/Ep1"
    assert h.helicsMessageGetSource(msg3) == "fed1/Ep1"
    assert h.helicsMessageGetDestination(msg3) == "Ep2"
    assert h.helicsMessageGetOriginalDestination(msg3) == "Ep2"

    sub1Updated = h.helicsInputIsUpdated(sub1)
    # TODO: figure out why this test is broken
    assert sub1Updated is False

    # TODO: figure out why this test is broken
    assert h.helicsInputLastUpdateTime(sub2) == 0.0

    # assert h.helicsInputGetComplex(sub2) == 5.6 - 0.67j

    # assert h.helicsInputGetDouble(sub1) == 457.234
    # assert h.helicsInputGetInteger(sub4) == 1
    sub7PointString, sub7DoubleValue = h.helicsInputGetNamedPoint(sub7)
    # assert sub7PointString == "Blah Blah"
    assert sub7DoubleValue == 20.0
    # assert h.helicsInputGetBoolean(sub5) == True
    # assert h.helicsInputGetString(sub3) == "Mayhem"

    sub3ValueSize = h.helicsInputGetRawValueSize(sub3)
    # assert sub3ValueSize == 6

    # assert h.helicsInputGetVector(sub6) == [4.5, 56.5]

    h.helicsFederateFinalize(fed1)
    h.helicsFederateFinalize(fed2)
    h.helicsFederateFree(fed1)
    h.helicsFederateFinalize(fed2)
    h.helicsFederateFree(fed2)
    h.helicsFederateInfoFree(fedInfo2)
    h.helicsBrokerDisconnect(broker3)

    h.helicsBrokerFree(broker3)

    h.helicsCleanupLibrary()
    h.helicsCloseLibrary()
Beispiel #5
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def federate_example(config_path):
    # Registering  federate from json

    try:
        fed = h.helicsCreateCombinationFederateFromConfig(config_path)
    except h._helics.HelicsException as exc:
        print("Exception occured".format(exc))
        exit(-1)
    federate_name = h.helicsFederateGetName(fed)
    print(federate_name)
    endpoint_count = h.helicsFederateGetEndpointCount(fed)
    subkeys_count = h.helicsFederateGetInputCount(fed)
    pubkeys_count = h.helicsFederateGetPublicationCount(fed)

    # Reference to Publications and Subscription form index
    endid = {}
    subid = {}
    pubid = {}
    for i in range(0,endpoint_count):
        endid["m{}".format(i)] = h.helicsFederateGetEndpointByIndex(fed, i)
        end_name = h.helicsEndpointGetName(endid["m{}".format(i)])
        logger.info( 'Registered Endpoint ---> {}'.format(end_name))

    for i in range(0, subkeys_count):
        idx = h.helicsFederateGetInputByIndex(fed, i)
        subid["m{}".format(i)] = idx
        status = h.helicsInputSetDefaultComplex(subid["m{}".format(i)], 0, 0)
        sub_key = h.helicsSubscriptionGetKey(idx)
        logger.info( 'Registered Subscription ---> {}'.format(sub_key))

    for i in range(0, pubkeys_count):
        idx = h.helicsFederateGetPublicationByIndex(fed, i)
        pubid["m{}".format(i)] = idx
        pub_key = h.helicsPublicationGetKey(idx)
        logger.info( 'Registered Publications ---> {}'.format(pub_key))

    print('###############################################################################################')
    print('########################   Entering Execution Mode  ##########################################')
    # Entering Execution Mode
    h.helicsFederateEnterExecutingMode(fed)
    print('###############################################################################################')

    hours = 0.1
    total_inteval = int(60 * 60 * hours)
    grantedtime = -1
    update_interval = 1 # 5*60
    k = 0
    data ={}
    time.sleep(5)
    time_sim = []
    real = 0
    for t in range(0, total_inteval, update_interval):
        while grantedtime < t:
            grantedtime = h.helicsFederateRequestTime (fed, t)
        time.sleep(0.1)
        print('########################   Time interval {}  ##########################################'.format(t))
        print('########################   Publishing to topics  ######################################')
        real = real + 1
        for i in range(0, pubkeys_count):
            idx = pubid["m{}".format(i)]
            h.helicsPublicationPublishComplex(idx, real*i, 78)

        print( '########################   Get input from subscribed topics  #########################')
        for i in range(0, subkeys_count):
            idx = subid["m{}".format(i)]
            value = h.helicsInputGetDouble(idx)
            key = h.helicsSubscriptionGetKey(idx)
            print("Value for key: {} is {}".format(key, value))

        print('########################   Get from Endpoint  #########################################')
        idx = endid["m{}".format(0)]
        while h.helicsEndpointHasMessage(idx):            
            msg = h.helicsEndpointGetMessage(idx)
            end_name = h.helicsEndpointGetName(idx)
            print("Value from endpoint name: {} is {}".format(end_name, msg.data))

        print('########################   Send to VOLTTRON Endpoint  #################################')
        for i in range(0, endpoint_count):
            idx = endid["m{}".format(i)]
            value = i + random.randint(1, 101) + 89.7
            end_name = h.helicsEndpointGetName(idx)
            print("Sending Value:{0} for endpoint: {1}".format(value, end_name))
            h.helicsEndpointSendEventRaw(idx, '', str(value), t)
            end_name = h.helicsEndpointGetName(idx)

    logger.info("Destroying federate")
    destroy_federate(fed)
Beispiel #6
0
    def register_inputs(self, config=None, callback=None, **kwargs):
        """
        Register configuration parameters with HELICS. The config parameters may include
        but not limited to:
        1. Name of the federate
        2. simulation length
        2. Type of core to use (zmq/tcp/udp etc)
        3. list (and type) of subscriptions
        4. list (and type) of publications
        5. broker address (if not default)
        :param config: config parameters
        :param callback: Register agent callback method
        :return:
        """
        self._work_callback = callback
        # Build HELICS config from agent config
        helics_config = deepcopy(config)

        properties = helics_config.pop('properties', {})
        if not properties:
            raise RuntimeError(
                "Invalid configuration. Missing properties dictionary")
        self._simulation_delta = properties.pop('timeDelta', 1.0)  # seconds
        self._simulation_length = properties.pop('simulation_length',
                                                 3600)  # seconds

        for key, value in properties.items():
            helics_config[key] = value
        subscriptions = helics_config.pop('outputs', [])
        for sub in subscriptions:
            volttron_topic = sub.pop('volttron_topic', None)
            if volttron_topic is not None:
                self.helics_to_volttron_publish[sub.get(
                    'key')] = volttron_topic
            sub['key'] = sub.pop('sim_topic')
        # Replace 'outputs' key with 'subscriptions' key
        if subscriptions:
            helics_config['subscriptions'] = subscriptions

        publications = helics_config.pop('inputs', [])
        for pub in publications:
            volttron_topic = pub.pop('volttron_topic', None)
            pub['key'] = pub.pop('sim_topic')
        # Replace 'inputs' key with 'publications' key
        if publications:
            helics_config['publications'] = publications
        _log.debug("new config: {}".format(helics_config))

        # Create a temporary json file
        tmp_file = os.path.join(os.getcwd(), 'fed_cfg.json')
        _log.debug("tmp file: {}".format(tmp_file))
        with open(tmp_file, 'w') as fout:
            fout.write(jsonapi.dumps(helics_config))

        _log.debug("Create Combination Federate")
        # Create federate from provided config parameters
        try:
            self.fed = h.helicsCreateCombinationFederateFromConfig(tmp_file)
        except h._helics.HelicsException as e:
            _log.exception("Error parsing HELICS config {}".format(e))

        # Check if HELICS broker correctly registered inputs
        federate_name = h.helicsFederateGetName(self.fed)
        _log.debug("Federate name: {}".format(federate_name))
        endpoint_count = h.helicsFederateGetEndpointCount(self.fed)
        _log.debug("Endpoint count: {}".format(endpoint_count))
        subkeys_count = h.helicsFederateGetInputCount(self.fed)
        _log.debug("Subscription key count: {}".format(subkeys_count))
        pubkeys_count = h.helicsFederateGetPublicationCount(self.fed)
        _log.debug("Publication key count: {}".format(endpoint_count))

        for i in range(0, endpoint_count):
            try:
                endpt_idx = h.helicsFederateGetEndpointByIndex(self.fed, i)
                endpt_name = h.helicsEndpointGetName(endpt_idx)
                self.endpoints[endpt_name] = endpt_idx
            except h._helics.HelicsException as e:
                _log.exception(
                    "Error getting helics endpoint index: {}".format(e))

        for i in range(0, subkeys_count):
            inputs = dict()
            try:
                idx = h.helicsFederateGetInputByIndex(self.fed, i)
                inputs['sub_id'] = idx
                inputs['type'] = h.helicsInputGetType(idx)
                inputs['key'] = h.helicsSubscriptionGetKey(idx)
                self.inputs.append(inputs)
                data = dict(type=inputs['type'], value=None)
            except h._helics.HelicsException as e:
                _log.exception(
                    "Error getting helics input index: {}".format(e))

        for i in range(0, pubkeys_count):
            outputs = dict()
            try:
                idx = h.helicsFederateGetPublicationByIndex(self.fed, i)
                outputs['pub_id'] = idx
                outputs['type'] = h.helicsPublicationGetType(idx)
                pub_key = h.helicsPublicationGetKey(idx)
                _log.debug("Publication: {}".format(pub_key))
                self.outputs[pub_key] = outputs
                data = dict(type=outputs['type'], value=None)
            except h._helics.HelicsException as e:
                _log.exception(
                    "Error getting helics publication index: {}".format(e))