// ------------------------------------------------------------
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//  Licensed under the MIT License (MIT). See License.txt in the repo root for license information.
// ------------------------------------------------------------
[

  {
    // example for an EnpointUrl is: opc.tcp://192.168.178.26:62541/Quickstarts/ReferenceServer
    "EndpointUrl": "opc.tcp://<your_opcua_server>:<your_opcua_server_port>/<your_opcua_server_path>",
    // allows to access the endpoint with SecurityPolicy.None when set to 'false' (no signing and encryption applied to the OPC UA communication), default is true
    "UseSecurity": true,
    "OpcNodes": [
      {
        // identifies the OPC node to publish in either NodeId format (contains "ns=") or ExpandedNodeId format (contains "nsu=")
        "Id": "i=2258",
        // specifies the sampling interval OPC Publisher requests the server to sample the node value
        "OpcSamplingInterval": 2000,
        // specifies the publishing interval OPC Publisher requests the server to publish the node value, it will only be published if the value has changed
        "OpcPublishingInterval": 5000,
        // specifies that there should be a heartbeat generated by OPC Publisher, this means that after the given interval the last message will be sent again with an updated SourceTimestamp value.
        "HeartbeatInterval": 3600,
        // specifies that the first event will not generate a telemetry event, this is useful when publishing a large amount of data to prevent a event flood at startup of OPC Publisher
        "SkipFirst": false
      }
    ]
  },

  {
    // example for an EnpointUrl is: opc.tcp://192.168.178.26:62541/Quickstarts/ReferenceServer
    "EndpointUrl": "opc.tcp://<your_opcua_server>:<your_opcua_server_port>/<your_opcua_server_path>",
    // allows to access the endpoint with SecurityPolicy.None when set to 'false' (no signing and encryption applied to the OPC UA communication), default is true
    "UseSecurity": true,
    "OpcNodes": [
      {
        // identifies the OPC node to publish using string based addressing e.g. for Siemens S7 "TCP".PLC_1.Motor_Simulation.M1.Motor_Drehzahl
        "Id": "ns=2;s=Siemens S7 \"TCP\".PLC_1.Motor_Simulation.M1.Motor_Drehzahl",
        // specifies the sampling interval OPC Publisher requests the server to sample the node value
        "OpcSamplingInterval": 2000,
        // specifies the publishing interval OPC Publisher requests the server to publish the node value, it will only be published if the value has changed
        "OpcPublishingInterval": 5000,
        // specifies that there should be a heartbeat generated by OPC Publisher, this means that after the given interval the last message will be sent again with an updated SourceTimestamp value.
        "HeartbeatInterval": 3600,
        // specifies that the first event will not generate a telemetry event, this is useful when publishing a large amount of data to prevent a event flood at startup of OPC Publisher
        "SkipFirst": false
      }
    ]
  },

  //
  // For completeness you will find the documentation of legacy formats below.
  //
  {
    // example for an EnpointUrl is: opc.tcp://win10iot:51210/UA/SampleServer
    "EndpointUrl": "opc.tcp://<your_opcua_server>:<your_opcua_server_port>/<your_opcua_server_path>",
    // Allows to access the endpoint with SecurityPolicy.None when set to 'false' (no signing and encryption applied to the OPC UA communication), default is true
    "UseSecurity": true,
    "OpcNodes": [
      // Publisher will request the server at EndpointUrl to sample the node with the OPC sampling interval specified on command line (or the default value: OPC publishing interval)
      // and the subscription will publish the node value with the OPC publishing interval specified on command line (or the default value: server revised publishing interval).
      {
        // The identifier specifies the NamespaceUri and the node identifier in XML notation as specified in Part 6 of the OPC UA specification in the XML Mapping section.
        "ExpandedNodeId": "nsu=http://opcfoundation.org/UA/;i=2258"
      },
      // Publisher will request the server at EndpointUrl to sample the node with the OPC sampling interval specified on command line (or the default value: OPC publishing interval)
      // and the subscription will publish the node value with an OPC publishing interval of 4 seconds.
      // Publisher will use for each dinstinct publishing interval (of nodes on the same EndpointUrl) a separate subscription. All nodes without a publishing interval setting,
      // will be on the same subscription and the OPC UA stack will publish with the lowest sampling interval of a node.
      {
        "ExpandedNodeId": "nsu=http://opcfoundation.org/UA/;i=2258",
        "OpcPublishingInterval": 4000
      },
      // Publisher will request the server at EndpointUrl to sample the node with the given sampling interval of 1 second
      // and the subscription will publish the node value with the OPC publishing interval specified on command line (or the default value: server revised interval).
      // If the OPC publishing interval is set to a lower value, Publisher will adjust the OPC publishing interval of the subscription to the OPC sampling interval value.
      {
        "ExpandedNodeId": "nsu=http://opcfoundation.org/UA/;i=2258",
        // the OPC sampling interval to use for this node.
        "OpcSamplingInterval": 1000
      }
    ]
  },

  // the format below (NodeId format) is only supported for backward compatibility. you need to ensure that the
  // OPC UA server on the configured EndpointUrl has the namespaceindex you expect with your configuration.
  // please use the ExpandedNodeId format as in the examples above instead.
  {
    "EndpointUrl": "opc.tcp://<your_opcua_server>:<your_opcua_server_port>/<your_opcua_server_path>",
    "NodeId": {
      "Identifier": "ns=0;i=2258"
    }
  }
  // please consult the OPC UA specification for details on how OPC monitored node sampling interval and OPC subscription publishing interval settings are handled by the OPC UA stack.
  // the publishing interval of the data to Azure IoTHub is controlled by the command line settings (or the default: publish data to IoTHub at least each 1 second).
]