阿里云IoT物模型-属性，服务，事件通信的topic和payload详解

0.阿里云IoT物模型

物模型定义了产品的属性、服务、事件通信协议，IoT设备和云端需要按约定规则通信，才能实现物模型转化。

1.设备属性通信

1.1 设备上报属性

设备上报pubTopic

/sys/{productKey}/{deviceName}/thing/event/property/post

设备上报payload格式

{

"id": 3536123,

"version": "1.0",

"params": {

"属性key1": "属性value1",

"属性key2": "属性value2"

},

"method": "thing.event.property.post"

}

IoT云端响应replyTopic

/sys/{productKey}/{deviceName}/thing/event/property/post_reply

云端响应payload格式

"code": 200,

"data": {}

1.2 云端设置设备属性

设备订阅subTopic

/sys/{productKey}/{deviceName}/thing/service/property/set

IoT云端下行的payload格式

"method": "thing.service.property.set"

设备响应replyTopic

/sys/{productKey}/{deviceName}/thing/service/property/set_reply

设备响应payload格式

1.3 云端获取设备属性

/sys/{productKey}/{deviceName}/thing/service/property/get

"params": [

"属性key1",

"属性key2"

],

"method": "thing.service.property.get"

/sys/{productKey}/{deviceName}/thing/service/property/get_reply

"data": {

2.设备服务调用

2.1 服务的异步调用

注意：服务订阅Topic这里不支持+通配符

/sys/{productKey}/{deviceName}/thing/service/{tsl.service.identifier}

或者订阅指定service

"入参key1": "入参value1",

"入参key2": "入参value2"

"method": "thing.service.{tsl.service.identifier}"

/sys/{productKey}/{deviceName}/thing/service/{tsl.service.identifier}_reply

"出参key1": "出参value1",

"出参key2": "出参value2"

2.2 服务的同步调用

注意：服务同步调用API是InvokeThingService

/sys/${productKey}/${deviceName}/rrpc/request/+

/sys/${productKey}/${deviceName}/rrpc/response/request的消息Id

3.设备事件上报

3.1 事件上报

/sys/{productKey}/{deviceName}/thing/event/{tsl.event.identifier}/post

"method": "thing.event.{tsl.event.identifier}.post"

/sys/{productKey}/{deviceName}/thing/event/{tsl.event.identifier}/post_reply