Device Twin Modification Result

This topic is used to subscribe to the result of modifying device twins.

Topic

$hw/events/device/{device_id}/twin/update/result

Parameter	Type	Description
device_id	String	End device ID.

Usage

Use an MQTT client to subscribe to this topic. This topic must be used together with Device Twin Modification.

Parameter Description

Parameter	Type	Description
event_id	String	Event ID.
timestamp	Int64	Timestamp when the event occurred.
twin	Object	A set of modified device twins. Each twin is in the key-value pair format. The value contains the option flag, the twin metadata contains the value type, the expected status contains the expected value and update time, and the actual status contains the actual value and update time.

Example

$hw/events/device/ab39361a-6fc0-4c94-b919-72b1e08ca690/twin/update/result

{
     "event_id":"123457",
     "timestamp":1557317614026,
     "twin":{
         "state":{
             "actual":{
                 "value":"stop",
                 "metadata":{
                     "timestamp":1557317614026
                 }
             },
             "optional":true,
             "metadata":{
                 "type":"string"
             }
         }
     }
 }