/// <summary>
/// Decode the stream from decoder parameter and produce a Dataset
/// </summary>
/// <param name="jsonDecoder"></param>
/// <param name="dataSetReaders"></param>
/// <returns></returns>
public void DecodeSubscribedDataSets(JsonDecoder jsonDecoder, IEnumerable <DataSetReaderDataType> dataSetReaders)
{
try
{
List <DataSetReaderDataType> dataSetReadersFiltered = new List <DataSetReaderDataType>();
// 1. decode network message header (PublisherId & DataSetClassId)
DecodeNetworkMessageHeader(jsonDecoder);
// ignore network messages that are not dataSet messages
if (m_jsonNetworkMessageType != JSONNetworkMessageType.DataSetMessage)
{
return;
}
//* 6.2.8.1 PublisherId
// The parameter PublisherId defines the Publisher to receive NetworkMessages from.
// If the value is null, the parameter shall be ignored and all received NetworkMessages pass the PublisherId filter. */
foreach (DataSetReaderDataType dataSetReader in dataSetReaders)
{
if (dataSetReader.PublisherId == Variant.Null)
{
dataSetReadersFiltered.Add(dataSetReader);
}
// publisher id
else if ((NetworkMessageContentMask & JsonNetworkMessageContentMask.PublisherId) != 0 &&
PublisherId != null &&
PublisherId.Equals(dataSetReader.PublisherId.Value.ToString()))
{
dataSetReadersFiltered.Add(dataSetReader);
}
}
if (dataSetReadersFiltered.Count == 0)
{
return;
}
dataSetReaders = dataSetReadersFiltered;
object messagesToken = null;
List <object> messagesList = null;
string messagesListName = string.Empty;
if (jsonDecoder.ReadField(kFieldMessages, out messagesToken))
{
messagesList = messagesToken as List <object>;
if (messagesList == null)
{
// this is a SingleDataSetMessage encoded as the conteten of Messages
jsonDecoder.PushStructure(kFieldMessages);
messagesList = new List <object>();
}
else
{
messagesListName = kFieldMessages;
}
}
else if (jsonDecoder.ReadField(JsonDecoder.RootArrayName, out messagesToken))
{
messagesList = messagesToken as List <object>;
messagesListName = JsonDecoder.RootArrayName;
}
else
{
// this is a SingleDataSetMessage encoded as the conteten of json
messagesList = new List <object>();
}
if (messagesList != null)
{
// atempt decoding for each data set reader
foreach (DataSetReaderDataType dataSetReader in dataSetReaders)
{
JsonDataSetReaderMessageDataType jsonMessageSettings = ExtensionObject.ToEncodeable(dataSetReader.MessageSettings)
as JsonDataSetReaderMessageDataType;
if (jsonMessageSettings == null)
{
// The reader MessageSettings is not set up corectly
continue;
}
JsonNetworkMessageContentMask networkMessageContentMask =
(JsonNetworkMessageContentMask)jsonMessageSettings.NetworkMessageContentMask;
if ((networkMessageContentMask & NetworkMessageContentMask) != NetworkMessageContentMask)
{
// The reader MessageSettings.NetworkMessageContentMask is not set up corectly
continue;
}
// initialize the dataset message
JsonDataSetMessage jsonDataSetMessage = new JsonDataSetMessage();
jsonDataSetMessage.DataSetMessageContentMask = (JsonDataSetMessageContentMask)jsonMessageSettings.DataSetMessageContentMask;
jsonDataSetMessage.SetFieldContentMask((DataSetFieldContentMask)dataSetReader.DataSetFieldContentMask);
// set the flag that indicates if dataset message shall have a header
jsonDataSetMessage.HasDataSetMessageHeader = (networkMessageContentMask & JsonNetworkMessageContentMask.DataSetMessageHeader) != 0;
jsonDataSetMessage.DecodePossibleDataSetReader(jsonDecoder, messagesList.Count, messagesListName, dataSetReader);
if (jsonDataSetMessage.DataSet != null)
{
m_uaDataSetMessages.Add(jsonDataSetMessage);
}
}
}
}
catch (Exception ex)
{
// Unexpected exception in DecodeSubscribedDataSets
Utils.Trace(ex, "JsonNetworkMessage.DecodeSubscribedDataSets");
}
}
/// <summary>
/// Creates a Subscriber PubSubConfiguration object for MQTT & Json programmatically.
/// </summary>
/// <returns></returns>
private static PubSubConfigurationDataType CreateSubscriberConfiguration_MqttJson(string urlAddress)
{
// Define a PubSub connection with PublisherId 2
PubSubConnectionDataType pubSubConnection1 = new PubSubConnectionDataType();
pubSubConnection1.Name = "Subscriber Connection MQTT Json";
pubSubConnection1.Enabled = true;
pubSubConnection1.PublisherId = (UInt16)2;
pubSubConnection1.TransportProfileUri = Profiles.PubSubMqttJsonTransport;
NetworkAddressUrlDataType address = new NetworkAddressUrlDataType();
// Specify the local Network interface name to be used
// e.g. address.NetworkInterface = "Ethernet";
// Leave empty to subscribe on all available local interfaces.
address.NetworkInterface = String.Empty;
address.Url = urlAddress;
pubSubConnection1.Address = new ExtensionObject(address);
// Configure the mqtt specific configuration with the MQTTbroker
ITransportProtocolConfiguration mqttConfiguration = new MqttClientProtocolConfiguration(version: EnumMqttProtocolVersion.V500);
pubSubConnection1.ConnectionProperties = mqttConfiguration.ConnectionProperties;
string brokerQueueName = "Json_WriterGroup_1";
string brokerMetaData = "$Metadata";
#region Define ReaderGroup1
ReaderGroupDataType readerGroup1 = new ReaderGroupDataType();
readerGroup1.Name = "ReaderGroup 1";
readerGroup1.Enabled = true;
readerGroup1.MaxNetworkMessageSize = 1500;
readerGroup1.MessageSettings = new ExtensionObject(new ReaderGroupMessageDataType());
readerGroup1.TransportSettings = new ExtensionObject(new ReaderGroupTransportDataType());
#region Define DataSetReader1 'Simple' for PublisherId = (UInt16)2, DataSetWriterId = 1
DataSetReaderDataType dataSetReaderSimple = new DataSetReaderDataType();
dataSetReaderSimple.Name = "Reader 1 MQTT JSON Variant Encoding";
dataSetReaderSimple.PublisherId = (UInt16)2;
dataSetReaderSimple.WriterGroupId = 1;
dataSetReaderSimple.DataSetWriterId = 1;
dataSetReaderSimple.Enabled = true;
dataSetReaderSimple.DataSetFieldContentMask = (uint)DataSetFieldContentMask.None;// Variant encoding;
dataSetReaderSimple.KeyFrameCount = 3;
JsonDataSetReaderMessageDataType jsonDataSetReaderMessage = new JsonDataSetReaderMessageDataType()
{
NetworkMessageContentMask = (uint)(uint)(JsonNetworkMessageContentMask.NetworkMessageHeader
| JsonNetworkMessageContentMask.DataSetMessageHeader
| JsonNetworkMessageContentMask.PublisherId
| JsonNetworkMessageContentMask.DataSetClassId
| JsonNetworkMessageContentMask.ReplyTo),
DataSetMessageContentMask = (uint)(JsonDataSetMessageContentMask.DataSetWriterId
| JsonDataSetMessageContentMask.MetaDataVersion
| JsonDataSetMessageContentMask.SequenceNumber
| JsonDataSetMessageContentMask.Status
| JsonDataSetMessageContentMask.Timestamp),
};
dataSetReaderSimple.MessageSettings = new ExtensionObject(jsonDataSetReaderMessage);
BrokerDataSetReaderTransportDataType brokerTransportSettings = new BrokerDataSetReaderTransportDataType()
{
QueueName = brokerQueueName,
RequestedDeliveryGuarantee = BrokerTransportQualityOfService.BestEffort,
MetaDataQueueName = $"{brokerQueueName}/{brokerMetaData}",
};
dataSetReaderSimple.TransportSettings = new ExtensionObject(brokerTransportSettings);
// Create and set DataSetMetaData for DataSet Simple
DataSetMetaDataType simpleMetaData = CreateDataSetMetaDataSimple();
dataSetReaderSimple.DataSetMetaData = simpleMetaData;
// Create and set SubscribedDataSet
TargetVariablesDataType subscribedDataSet = new TargetVariablesDataType();
subscribedDataSet.TargetVariables = new FieldTargetDataTypeCollection();
foreach (var fieldMetaData in simpleMetaData.Fields)
{
subscribedDataSet.TargetVariables.Add(new FieldTargetDataType()
{
DataSetFieldId = fieldMetaData.DataSetFieldId,
TargetNodeId = new NodeId(fieldMetaData.Name, NamespaceIndexSimple),
AttributeId = Attributes.Value,
OverrideValueHandling = OverrideValueHandling.OverrideValue,
OverrideValue = new Variant(TypeInfo.GetDefaultValue(fieldMetaData.DataType, (int)ValueRanks.Scalar))
});
}
dataSetReaderSimple.SubscribedDataSet = new ExtensionObject(subscribedDataSet);
#endregion
readerGroup1.DataSetReaders.Add(dataSetReaderSimple);
#region Define DataSetReader2 'AllTypes' for PublisherId = (UInt16)2, DataSetWriterId = 2
DataSetReaderDataType dataSetReaderAllTypes = new DataSetReaderDataType();
dataSetReaderAllTypes.Name = "Reader 2 MQTT JSON RawData Encoding";
dataSetReaderAllTypes.PublisherId = (UInt16)2;
dataSetReaderAllTypes.WriterGroupId = 1;
dataSetReaderAllTypes.DataSetWriterId = 2;
dataSetReaderAllTypes.Enabled = true;
dataSetReaderAllTypes.DataSetFieldContentMask = (uint)DataSetFieldContentMask.RawData;// RawData encoding;
dataSetReaderAllTypes.KeyFrameCount = 1;
jsonDataSetReaderMessage = new JsonDataSetReaderMessageDataType()
{
NetworkMessageContentMask = (uint)(JsonNetworkMessageContentMask.NetworkMessageHeader
| JsonNetworkMessageContentMask.DataSetMessageHeader
| JsonNetworkMessageContentMask.PublisherId
| JsonNetworkMessageContentMask.DataSetClassId
| JsonNetworkMessageContentMask.ReplyTo),
DataSetMessageContentMask = (uint)(JsonDataSetMessageContentMask.DataSetWriterId
| JsonDataSetMessageContentMask.MetaDataVersion
| JsonDataSetMessageContentMask.SequenceNumber
| JsonDataSetMessageContentMask.Status
| JsonDataSetMessageContentMask.Timestamp),
};
dataSetReaderAllTypes.MessageSettings = new ExtensionObject(jsonDataSetReaderMessage);
brokerTransportSettings = new BrokerDataSetReaderTransportDataType()
{
QueueName = brokerQueueName,
RequestedDeliveryGuarantee = BrokerTransportQualityOfService.BestEffort,
MetaDataQueueName = $"{brokerQueueName}/{brokerMetaData}",
};
dataSetReaderAllTypes.TransportSettings = new ExtensionObject(brokerTransportSettings);
// Create and set DataSetMetaData for DataSet AllTypes
DataSetMetaDataType allTypesMetaData = CreateDataSetMetaDataAllTypes();
dataSetReaderAllTypes.DataSetMetaData = allTypesMetaData;
// Create and set SubscribedDataSet
subscribedDataSet = new TargetVariablesDataType();
subscribedDataSet.TargetVariables = new FieldTargetDataTypeCollection();
foreach (var fieldMetaData in allTypesMetaData.Fields)
{
subscribedDataSet.TargetVariables.Add(new FieldTargetDataType()
{
DataSetFieldId = fieldMetaData.DataSetFieldId,
TargetNodeId = new NodeId(fieldMetaData.Name, NamespaceIndexAllTypes),
AttributeId = Attributes.Value,
OverrideValueHandling = OverrideValueHandling.OverrideValue,
OverrideValue = new Variant(TypeInfo.GetDefaultValue(fieldMetaData.DataType, (int)ValueRanks.Scalar))
});
}
dataSetReaderAllTypes.SubscribedDataSet = new ExtensionObject(subscribedDataSet);
#endregion
readerGroup1.DataSetReaders.Add(dataSetReaderAllTypes);
#endregion
pubSubConnection1.ReaderGroups.Add(readerGroup1);
//create pub sub configuration root object
PubSubConfigurationDataType pubSubConfiguration = new PubSubConfigurationDataType();
pubSubConfiguration.Connections = new PubSubConnectionDataTypeCollection()
{
pubSubConnection1
};
return(pubSubConfiguration);
}
