本页目录

• Connector configuration: xmpp.json
  • Section “server”
  • Section “devices”
    • Device subsection
    • Attribute updates subsection
    • Server side RPC subsection
• Next steps

This guide will help you to get familiar with MQTT Connector configuration for ThingsBoard IoT Gateway. Use general configuration to enable this Connector. The purpose of this connector is to collect data from IoT devices using XMPP protocol.

We will describe connector configuration file below.

Connector configuration: xmpp.json

Connector configuration is a JSON file that contains information about how to connect to devices, how to process the data and other service features. Let’s review the format of the configuration file using example below.

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{
  "server": {
    "jid": "gateway@localhost",
    "password": "password",
    "host": "localhost",
    "port": 5222,
    "use_ssl": false,
    "disable_starttls": false,
    "force_starttls": true,
    "timeout": 10000,
    "plugins": [
      "xep_0030",
      "xep_0323",
      "xep_0325"
    ]
  },
  "devices": [
    {
      "jid": "device@localhost/TMP_1101",
      "deviceNameExpression": "${serialNumber}",
      "deviceTypeExpression": "default",
      "attributes": [
        {
          "key": "temperature",
          "value": "${temp}"
        }
      ],
      "timeseries": [
        {
          "key": "humidity",
          "value": "${hum}"
        },
        {
          "key": "combination",
          "value": "${temp}:${hum}"
        }
      ],
      "attributeUpdates": [
        {
          "attributeOnThingsBoard": "shared",
          "valueExpression": "{\"${attributeKey}\":\"${attributeValue}\"}"
        }
      ],
      "serverSideRpc": [
        {
          "methodRPC": "rpc1",
          "withResponse": true,
          "valueExpression": "${params}"
        }
      ]
    }
  ]
}

Section “server”

This configuration section using for configure Gateway XMPP device and connection to XMPP server.

Configuration section will look like:

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{
  "server": {
    "jid": "gateway@localhost",
    "password": "password",
    "host": "localhost",
    "port": 5222,
    "use_ssl": false,
    "disable_starttls": false,
    "force_starttls": true,
    "timeout": 10000,
    "plugins": [
      "xep_0030",
      "xep_0323",
      "xep_0325"
    ]
  }
}

Section “devices”

This configuration section contains an array of devices that can be connected to the connector and send the data. It is mean that connector reject all device connections, which JID is not included in this array.

Device subsection

This object configuration section includes the parameters of how to proceed with incoming data.

Example:

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{
  "jid": "device@localhost/TMP_1101",
  "deviceNameExpression": "${serialNumber}",
  "deviceTypeExpression": "default",
  "attributes": [
    {
      "key": "temperature",
      "value": "${temp}"
    }
  ],
  "timeseries": [
    {
      "key": "humidity",
      "value": "${hum}"
    },
    {
      "key": "combination",
      "value": "${temp}:${hum}"
    }
  ]
}

Attribute updates subsection

This configuration section is optional. ThingsBoard allows provisioning device attributes and fetch some of them from the device application. You can treat this as a remote configuration for devices. Your devices are able to request shared attributes from ThingsBoard. See user guide for more details.

The “attributeUpdates” configuration allows configuring the format of the corresponding attribute data that will be sending to the XMPP device.

This section in configuration file looks like:

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"attributeUpdates": [
  {
    "attributeOnThingsBoard": "shared",
    "valueExpression": "{\"${attributeKey}\":\"${attributeValue}\"}"
  }
]

Server side RPC subsection

ThingsBoard allows sending RPC commands to the device that is connected to ThingsBoard directly or via Gateway.

Configuration, provided in this section uses for sending RPC requests from ThingsBoard to device.

This subsection in configuration file looks like:

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"serverSideRpc": [
  {
    "methodRPC": "rpc1",
    "withResponse": true,
    "valueExpression": "${params}"
  }
]

Next steps

Explore guides related to main ThingsBoard features:

• Data Visualization - how to visualize collected data.
• Device attributes - how to use device attributes.
• Telemetry data collection - how to collect telemetry data.
• Using RPC capabilities - how to send commands to/from devices.
• Rule Engine - how to use rule engine to analyze data from devices.