MQTT Asset Connection

Supported Providers

• ValueProvider

  • read ❌

  • write ✔️

• OperationProvider ❌

• SubscriptionProvider ✔️

Configuration Parameters

Asset Connection

Name	Allowed Value	Description
serverUri	String	URL of the MQTT server, e.g. tcp://localhost:1883
clientId	String	optional Id of the MQTT client used to connect to the server, default: random value
username	String	optional Username for connecting to the MQTT server
password	String	optional Password for connecting to the MQTT server

Value Provider

Name	Allowed Value	Description
format	JSON|XML	Content format of payload
topic	String	MQTT topic to use
template	String	optional Template used to format payload

Example

{
	"format": "JSON",
	"topic": "example/myTopic",
	"template": "{\"foo\" : \"${value}\"}"
}

Subscription Provider

Name	Allowed Value	Description
format	JSON|XML	Content format of payload
topic	String	MQTT topic to use
query	String	optional Additional information how to extract actual value from received messages, depends on format, e.g. for JSON this is a JSON Path expression.

Example

{
	"format": "JSON",
	"topic": "example/myTopic",
	"query": "$.foo"
}