Device Member Update

This topic is used to subscribe to updates on bindings between end devices and edge nodes.

Topic

$hw/events/node/{node_id}/membership/updated

Parameter	Type	Description
node_id	String	Node ID.

Usage

Use an MQTT client to subscribe to this topic.

Parameter Description

Parameter	Type	Description
event_id	String	Event ID.
timestamp	Int64	Timestamp when the event occurred.
added_devices	Array	Information about end devices, including the device ID, name, properties, and twin properties.
removed_devices	Array	Information about end devices, including the device ID, name, properties, and twin properties.

Example

When an end device is bound to an edge node, the following message is received:

$hw/events/node/{node_id}/membership/updated

{
     "event_id":"04a975ab-fd51-49be-85f5-5967e994f640",
     "timestamp":1557314742136,
     "added_devices":[
         {
             "id":"ab39361a-6fc0-4c94-b919-72b1e08ca690",
             "name":"IEF-device",
             "state":"unknown",
             "attributes":{
                 "address":{
                     "value":"shenzhen",
                     "optional":true,
                     "metadata":{
                         "type":"string"
                     }
                 }
             },
             "twin":{
                 "state":{
                     "expected":{
                         "value":"running",
                         "metadata":{
                             "timestamp":1557314434570
                         }
                     },
                     "optional":true,
                     "metadata":{
                         "type":"string"
                     }
                 }
             }
         }
     ],
     "removed_devices":null
 }