NGSI to dashboard

This custom node is a simple node that allows to transform context data to data for the dashboard node.

Properties

• name: a name for a node instance
• Input type: an input type: Entity (normalized), Notification or Historical context
• Attributes: list of attributes
• Name to replace: list of names to replace attribute names

Inputs / Outputs

NGSI Entity node

input

If you want to transform context data received form NGSI Entity node, set Entity (normalized) to Input type.

{
  "id": "urn:ngsi-ld:WeatherObserved:sensor001",
  "type": "Sensor",
  "relativeHumidity": {
    "type": "Number",
    "value": 32,
    "metadata": {
      "TimeInstant": {
        "type": "DateTime",
        "value": "2023-01-28T04:53:13.301Z"
      }
    }
  },
  "temperature": {
    "type": "Number",
    "value": 22.4,
    "metadata": {
      "TimeInstant": {
        "type": "DateTime",
        "value": "2023-01-28T04:53:13.301Z"
      }
    }
  }
}

Output

A msg contains data for the dashboard node.

{ "payload": 22.4, "topic": "temperature", "timestamp": 1674881593301 }
{ "payload": 32, "topic": "relativeHumidity", "timestamp": 1674881593301 }

Notification

input

If you want to transform notification data received from Orion Context Broker, set Notification to Input type.

{
  "subscriptionId": "57edf55231cee478fe9fff1f",
  "data": [
    {
      "id": "urn:ngsi-ld:WeatherObserved:sensor001",
      "type": "Sensor",
      "relativeHumidity": {
        "type": "Number",
        "value": 32,
        "metadata": {
          "dateModified": {
            "type": "DateTime",
            "value": "2023-01-28T04:53:13.301Z"
          }
        }
      },
      "temperature": {
        "type": "Number",
        "value": 22.4,
        "metadata": {
          "dateModified": {
            "type": "DateTime",
            "value": "2023-01-28T04:53:13.301Z"
          }
        }
      }
    }
  ]
}

Output

A msg contains data for the dashboard node.

{ "payload": 22.4, "topic": "temperature", "timestamp": 1674881593301 }
{ "payload": 32, "topic": "relativeHumidity", "timestamp": 1674881593301 }

Historical context node

input

If you want to transform historical context data received form Historical context node, set Historical to Input type.

{
  "attrName": "temperature",
  "dataType": "raw",
  "type": "StructuredValue",
  "value": [
    {
      "_id": "63d45c3587f5b27f576ed498",
      "attrName": "temperature",
      "attrType": "Number",
      "attrValue": 22.2,
      "recvTime": "2023-01-27T23:20:21.201Z"
    },
    {
      "_id": "63d45c3787f5b27f576ed49e",
      "attrName": "temperature",
      "attrType": "Number",
      "attrValue": 22.2,
      "recvTime": "2023-01-27T23:20:23.199Z"
    },
    {
      "_id": "63d45c3987f5b27f576ed4a4",
      "attrName": "temperature",
      "attrType": "Number",
      "attrValue": 22.2,
      "recvTime": "2023-01-27T23:20:25.201Z"
    }
  ]
}

Output

A msg contains data for the dashboard node.

[
  {
    "series": [
      "temperature"
    ],
    "labels": [],
    "data": [
      [
        {
          "x": 1674861621201,
          "y": 22.2
        },
        {
          "x": 1674861623199,
          "y": 22.2
        },
        {
          "x": 1674861625201,
          "y": 22.2
        }
      ]
    ]
  }
]