Updated on 2022-08-11 GMT+08:00

Device Twin Acquisition Result

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

Topic

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

Parameter

Type

Description

device_id

String

Device ID.

Usage

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

Parameter Description

Parameter

Type

Description

event_id

String

Event ID.

timestamp

Int64

Timestamp when the event occurred.

twin

Object

A set of end device twin information. 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/get/result

{
     "event_id":"123456",
     "timestamp":1557317510926,
     "twin":{
         "state":{
             "expected":{
                 "value":"stop",
                 "metadata":{
                     "timestamp":1557316778931
                 }
             },
             "optional":true,
             "metadata":{
                 "type":"string"
             }
         }
     }
 }