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aliyun-iot-device-sdk
Advanced tools
Aliyun IoT Device SDK由阿里云提供给开发者然设备接入到阿里云IoT物联网平台(LinkPlatform )的工具。如果有使用问题可以反馈到linkplatform@alibaba-inc.com,关于IoT物联网平台更多功能和功能详细说明,参考官网文档 https://help.aliyun.com/product/30520.html?spm=a2c4g.11186623.6.540.3cb468d0Y2JGB2
安装 Node.js 运行环境,版本
>=4.0.0
。
通过 npm 包管理工具安装:
npm install aliyun-iot-device-sdk --save
var aliyunIot = require('aliyun-iot-device-sdk');
var device = aliyunIot.device({
productKey: '<productKey>',
deviceName: '<deviceName>',
deviceSecret: '<deviceSecret>'
});
device.on('connect', () => {
console.log('connect successfully!');
});
device.publish('/<productKey>/<deviceName>/update', 'hello world!');
device.subscribe('/<productKey>/<deviceName>/get');
device.on('message', (topic, payload) => {
console.log(topic, payload.toString());
});
IoT 套件高级版封装了物模型定义与 Alink 异步协议,SDK 封装使得设备与云端通信时不需要关心 MQTT topic,只需要调用属性上报(aliyunIot.device#postProps()
)、服务监听(aliyunIot.device#onService()
)、事件上报(aliyunIot.device#postEvent()
)等相关 API。
device.postProps({
'LightSwitch': 0
}, (res) => {
console.log("上报数据成功")
});
调用 device.postProps()
等同于执行以下代码:
// 发布属性上报 topic
device.publish('/sys/<productKey>/<deviceName>/thing/event/property/post', JSON.stringify({
{
id: msgId,
version: '1.0',
params: {
'LightSwitch': 25,
},
method: 'thing.event.property.post'
}
}));
// 监听属性上报响应 topic
device.subscribe('/sys/<productKey>/<deviceName>/thing/event/property/post_reply');
device.on('message', function(topic, message){
var res = message.toString();
if (res.id === msgId) {
// 在这里处理服务端响应
console.log(res.data);
}
});
// 监听云端设置属性wakeup_async服务消息
device.onService('wakeup_async', function (res) {
// 处理服务参数
console.log('1^:device.serve',res);
});
其他更多功能,请查api列表,值得注意的是
设备相关
网关相关(网关也可以使用设备相关的api)
aliyunIot.gateway()
aliyunIot.gateway#addTopo()
aliyunIot.gateway#getTopo()
aliyunIot.gateway#removeTopo()
aliyunIot.gateway#login()
aliyunIot.gateway#logout()
子设备
动态注册
和云端建立连接,返回一个 Device
连接实例,入参:
options
productKey
(String
)deviceName
(String
)deviceSecret
(String
)region
(String
) 阿里云 region,默认值:cn-shanghaitls
(Bool
) 是否开启 TLS 加密,Node.js 中如果开启将使用 TLS 协议进行连接,浏览器如果开启将上使用 WSS 协议keepalive
(int
) 心跳报文时间间隔,默认值60秒clean
(bool
) cleansession,是否清除连接session设置,默认值falsevar device = aliyunIot.device({
productKey: '<productKey>',
deviceName: '<deviceName>',
deviceSecret: '<deviceSecret>'
});
'connect'
function(connack) {}
当连接到云端成功时触发。
var aliyunIot = require('aliyun-iot-device-sdk');
var device = aliyunIot.device({
productKey: '<productKey>',
deviceName: '<deviceName>',
deviceSecret: '<deviceSecret>'
});
device.on('connect', () => {
console.log('connected!');
});
'message'
function(topic, message) {}
当接受到云端消息时触发,回调函数参数:
topic
消息主题message
消息 payloaddevice.on('message', (res) => {
console.log('msg:',res);
});
'error'
注意:由于nodejs的event机制,如果未监听error事件,当出现错误时会throw一个error,未try catch会导致程序终止,建议error事件需要监听
node对于这个error处理的解释: When an error occurs within an EventEmitter instance, the typical action is for an 'error' event to be emitted. These are treated as special cases within Node.js. If an EventEmitter does not have at least one listener registered for the 'error' event, and an 'error' event is emitted, the error is thrown, a stack trace is printed, and the Node.js process exits. 原文地址:https://nodejs.org/api/events.html
device.on('error', (err) => {
console.log('error:',err);
});
当连接出错触发
向topic发送消息,等同于 mqtt.Client#publish() 方法。
订阅消息,等同于 mqtt.Client#subscribe() 方法。
取消订阅消息等同于 mqtt.Client#unsubscribe() 方法。
上报物模型属性:
params
属性参数,Object
类型callback
res
服务端 reply 消息内容// 上报设备属性
device.postProps({
LightSwitch: 0
}, (res) => {
console.log(res);
});
上报物模型事件:
eventName
事件名称 String
类型params
事件参数,Object
类型callback
err
错误,比如超时res
服务端 reply 消息内容// 上报设备事件
device.postEvent("lowpower", {
power: 10,
}, (res) => {
console.log(`postEvent:${res}`);
})
监听物模型服务:
seviceName
服务名称,String
类型callback
params
服务参数device.onService('turnOn', function(res) {
// 收到设备服务调用消息
});
设备或网关断开连接,等同于 mqtt.Client#end() 方法。
上报设备标签:
params
属性对象数组,array
类型,内容格式示例 [ {attrKey:'xxx',attrValue:'xxx'},{}...]
attrKey
错误,比如超时或者 res.code !== 200
attrValue
服务端 reply 消息内容callback
res
服务端 reply 消息内容const tags = [
{
"attrKey": "Temperature",
"attrValue": "36.8"
}
]
device.postTags(
tags,
(res) => {
console.log(`add tag ok res:${res.id}`);
done()
}
);
删除设备标签:
tags
属性参数,array
类型,内容格式 [ 'string','string',....]
string
内外为tag的标签名称device.deleteTags(['tagA','tagB']);
获取设备标签:
callback
回调函数
device.getConfig((res) => {
console.log(`getConfig:${res.data.toString()}`);
});
订阅设备影子回调函数方法:
callback
回调函数
device.onShadow((res) => {
console.log('获取最新设备影子,%o', res);
})
获取设备影子最新:
// 设备主动获取影子,回调函数会触发onShadow方法,返回设备影子信息
device.getShadow();
上报设备影子数据
params
上报影子设备的实际值// 上报成功或错误都会触发onShadow方法,返回设备影子信息
device.postShadow({
a: "avalue"
});
删除影子设备的属性值
keys
需要删除设备影子的属性的key数组// 删除单个影子设备属性
device.deleteShadow("a");
// 删除多个影子设备属性
device.deleteShadow(["a","b"]);
// 删除所有影子设备属性
device.deleteShadow()
和云端建立连接,返回一个网关 Gateway
类连接实例,继承自 Device
类。网关可以使用设备的所有方法
options
productKey
(String
)deviceName
(String
)deviceSecret
(String
)region
(String
) 阿里云 region,默认值:cn-shanghaitls
(Bool
) 是否开启 TLS 加密,Node.js 中如果开启将使用 TLS 协议进行连接,浏览器如果开启将上使用 WSS 协议keepalive
(int
) 心跳报文时间间隔,默认值60秒clean
(bool
) cleansession,是否清除连接session设置,默认值falsevar device = aliyunIot.gateway({
productKey: '<productKey>',
deviceName: '<deviceName>',
deviceSecret: '<deviceSecret>'
});
添加子设备到拓扑
params
子设备三元组数组,[{productKey,deviceName,deviceSecret},{productKey,deviceName,deviceSecret},]callback
res
服务端 reply 消息内容gateway.addTopo(
[sub_device1,sub_device2],
(res)=>{console.log('>>>>>getTopo',res.message,res.data);}
);
添加子设备到拓扑关系
callback
res
服务端 reply 消息内容gateway.getTopo(
(res)=>{
console.log(res)
}
);
从拓扑关系里移除子设备
params
移除设备参数的数组,示例:[{"deviceName": "xx","productKey": "xx"},{"deviceName": "xx","productKey": "xx"},....]
productKey
deviceName
callback
res
服务端 reply 消息内容gateway.removeTopo(
[{"deviceName": "xx","productKey": "xx"},{"deviceName": "xx","productKey": "xx"}],
(res)=>{
console.log('>>>>>getTopo')
console.log(res.message)
console.log(res.data)
}
);
子设备上线
params
登录的设备信息示例:{"deviceName": "xx","productKey": "xx"}
productKey
(String
)deviceName
(String
)deviceSecret
(String
)callback
res
服务端 reply 消息内容返回值
返回一个子设备,子设备可以使用设备的api,做相关的操作
gateway.on('connect', () => {
//子设备登录ok
sub1 = gateway.login(
{"deviceName":"xx","productKey":"xx","deviceSecret":"xxx"},
(res) => {
console.log('>>>>>login', res);
}
);
// 子设备连接状态
sub1.on('connect', () => {
console.log(">>>>sub connected!");
// do something
sub1.postProps({
LightSwitch: 0
},(res)=>{
console.log(">>>>sub postProps!");
console.log(res);
});
});
});
子设备下线
params
子设备身份
productKey
(String
)deviceName
(String
)callback
res
服务端 reply 消息内容gateway.logout(
{"productKey": "xxxxx","deviceName": "xxxxx"},
(res) => {
console.log('>>>>>logout', res);
}
直连设备动态注册
params
子设备身份 object 实例 productKey:"a15YDgQGhU0",
productSecret
productKey
deviceName
callback
res
服务端 reply 消息内容,包含设备三元组const params = {
productKey:"xxxxxx",
productSecret:"xxxxxx",
deviceName:"xxxxxx"
}
aliyunIot.register(params,(res)=>{
console.log("register:",res);
if(res.code == '200'){
// 注册成功请保存设备三元组,只会返回一次
}
})
通过网关注册子设备
params
子设备身份信息,可以是单个{productKey,deviceName}
或者是一组[{productKey,deviceName},{productKey2,deviceName2}]
进行批量注册
productKey
deviceName
callback
res
服务端 reply 消息内容const gateway = aliyunIot.gateway({
productKey: '<productKey>',
deviceName: '<deviceName>',
deviceSecret: '<deviceSecret>'}
);
gateway.on('connect', () => {
gateway.regiestSubDevice([{"deviceName": "xxx","productKey": "xxx"}],(res)=>{
if(res.code == '200'){
// 注册成功请保存设备三元组,只会返回一次
}
});
});
id
发送请求的消息id,sdk中会自动生成message
返回的消息data
返回的数据code
服务端返回消息的状态码,常见code如下
200
成功400
内部服务错误, 处理时发生内部错误429
请求过于频繁,设备端处理不过来时可以使用460
请求参数错误520
子设备会话不存在// aliyunIot.gateway#postSubDeviceProps()
// aliyunIot.gateway#postSubDeviceEvent()
// aliyunIot.gateway#serveSubDeviceService()
const sub = gateway.login(
sub_device1,
(res)=>{console.log('>>>>>login',res);}
);
sub.on('connect', () => {
console.log(">>>>sub connected!");
sub.postProps({
LightSwitch: 0
},(res)=>{
console.log(">>>>sub postProps!");
console.log(res);
});
});
setTimeout(()=>{
gateway.logout(
sub_device1,
(res)=>{console.log('>>>>>logout',res);}
);
},5000)
1:初始化连接option选择增加支持keepalive和clean(cleansession)配置 2:修改regionId为region,并兼容之前的regionId参数
FAQs
aliyun iot device sdk
We found that aliyun-iot-device-sdk demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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