概述
您可以使用規則引擎,将物聯網平台資料轉發到消息隊列(RocketMQ)中存儲。進而實作消息從裝置、物聯網平台、RocketMQ到應用伺服器之間的全鍊路高可靠傳輸能力。文本從物聯網平台的産品及裝置的建立開始,逐漸介紹整個鍊路的完整實作。
操作步驟
1、建立物聯網産品及裝置
參考 阿裡雲物聯網平台Qucik Start 快速建立産品和裝置。
2、
RocketMQ控制台建立執行個體、Topic和Group,這個為了友善本地測試消費MQ的消息,選擇在公網區域建立相關資源
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阿裡雲物聯網平台裝置資料轉發到消息隊列RocketMQ全鍊路測試
3、配置規則引擎
a、配置總覽
b、處理資料
c、轉發資料
d、配置完開啟規則引擎
相關參考:
SQL語句參考 資料轉發到消息隊列RocketMQ裝置上報屬性消息
import com.alibaba.taro.AliyunIoTSignUtil;
import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import java.util.HashMap;
import java.util.Map;
public class IoTDemoPubSubDemo1 {
public static String productKey = "*********";
public static String deviceName = "*********";
public static String deviceSecret = "*********";
public static String regionId = "cn-shanghai";
// 物模型-屬性上報topic
private static String pubTopic = "/sys/" + productKey + "/" + deviceName + "/thing/event/property/post";
private static MqttClient mqttClient;
public static void main(String [] args){
// 初始化Mqtt Client對象
initAliyunIoTClient();
// 彙報屬性
postDeviceProperties();
}
/**
* 初始化 Client 對象
*/
private static void initAliyunIoTClient() {
try {
// 構造連接配接需要的參數
String clientId = "java" + System.currentTimeMillis();
Map<String, String> params = new HashMap<>(16);
params.put("productKey", productKey);
params.put("deviceName", deviceName);
params.put("clientId", clientId);
String timestamp = String.valueOf(System.currentTimeMillis());
params.put("timestamp", timestamp);
// cn-shanghai
String targetServer = "tcp://" + productKey + ".iot-as-mqtt."+regionId+".aliyuncs.com:1883";
String mqttclientId = clientId + "|securemode=3,signmethod=hmacsha1,timestamp=" + timestamp + "|";
String mqttUsername = deviceName + "&" + productKey;
String mqttPassword = AliyunIoTSignUtil.sign(params, deviceSecret, "hmacsha1");
connectMqtt(targetServer, mqttclientId, mqttUsername, mqttPassword);
} catch (Exception e) {
System.out.println("initAliyunIoTClient error " + e.getMessage());
}
}
public static void connectMqtt(String url, String clientId, String mqttUsername, String mqttPassword) throws Exception {
MemoryPersistence persistence = new MemoryPersistence();
mqttClient = new MqttClient(url, clientId, persistence);
MqttConnectOptions connOpts = new MqttConnectOptions();
// MQTT 3.1.1
connOpts.setMqttVersion(4);
connOpts.setAutomaticReconnect(false);
// connOpts.setCleanSession(true);
connOpts.setCleanSession(false);
connOpts.setUserName(mqttUsername);
connOpts.setPassword(mqttPassword.toCharArray());
connOpts.setKeepAliveInterval(60);
mqttClient.connect(connOpts);
}
/**
* 彙報屬性
*/
private static void postDeviceProperties() {
try {
//上報資料
//進階版 物模型-屬性上報payload
System.out.println("上報屬性值");
String payloadJson = "{\"params\":{\"Status\":1,\"Data\":\"33\"}}";
MqttMessage message = new MqttMessage(payloadJson.getBytes("utf-8"));
message.setQos(1);
mqttClient.publish(pubTopic, message);
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
}
運作狀态顯示
參考連結: 基于開源JAVA MQTT Client連接配接阿裡雲IoT
MQ Topic消息訂閱
1、pom.xml
<dependencies>
<dependency>
<groupId>com.aliyun.openservices</groupId>
<artifactId>ons-client</artifactId>
<version>1.8.0.Final</version>
</dependency>
</dependencies>
2、Code Sample
import com.aliyun.openservices.ons.api.*;
import java.util.Properties;
public class ConsumerTest {
public static void main(String[] args) {
Properties properties = new Properties();
// 您在控制台建立的 Group ID
properties.put(PropertyKeyConst.GROUP_ID, "GID_****");
// AccessKey 阿裡雲身份驗證,在阿裡雲伺服器管理控制台建立
properties.put(PropertyKeyConst.AccessKey,"********");
// SecretKey 阿裡雲身份驗證,在阿裡雲伺服器管理控制台建立
properties.put(PropertyKeyConst.SecretKey, "********");
properties.put(PropertyKeyConst.ConsumeThreadNums,50);
// 設定 TCP 接入域名,進入控制台的執行個體管理頁面的“擷取接入點資訊”區域檢視
properties.put(PropertyKeyConst.NAMESRV_ADDR,
"http://MQ_INST_184821781661****_BaQU****.mq-internet-access.mq-internet.aliyuncs.com:80");
Consumer consumer = ONSFactory.createConsumer(properties);
consumer.subscribe("Topic_MQDemo", "*", new MessageListener() { //訂閱多個 Tag
public Action consume(Message message, ConsumeContext context) {
System.out.println("Receive: " + message);
System.out.println("Message : " + new String(message.getBody()));//列印輸出消息
return Action.CommitMessage;
}
});
consumer.start();
System.out.println("Consumer Started");
}
}
3、測試結果
Receive: Message [topic=Topic_MQDemo, systemProperties={KEYS=1202850299555940352, __KEY=1202850299555940352, __RECONSUMETIMES=0, __BORNHOST=/11.115.104.187:51935, __MSGID=0B7368BB19AF531D72CA1D0A9B540077, MIN_OFFSET=520, __BORNTIMESTAMP=1575616834388, MAX_OFFSET=525}, userProperties={UNIQ_KEY=0B7368BB19AF531D72CA1D0A9B540077, MSG_REGION=cn-qingdao-publictest, eagleTraceId=0bc5f2c215756168339094214d0a1b, TRACE_ON=true, eagleData=s3bef5fb6, CONSUME_START_TIME=1575616834470, eagleRpcId=0.1.11.10.10.1.1.1.1}, body=38]
Message : {"data1":"33","deviceName":"MQDevice"}
日志查詢(友善對問題進行跟蹤定位排查)
1、物聯網平台 -》 運維監控 -》 日志服務 -》 上行日志
2、消息隊列RocketMQ -》 消息查詢
AMQP服務端訂閱
1、管理門戶配置
2、代碼訂閱,參考
連結3、Code Sample
import java.net.URI;
import java.util.Hashtable;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.naming.Context;
import javax.naming.InitialContext;
import org.apache.commons.codec.binary.Base64;
import org.apache.qpid.jms.JmsConnection;
import org.apache.qpid.jms.JmsConnectionListener;
import org.apache.qpid.jms.message.JmsInboundMessageDispatch;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class AmqpJavaClientDemo {
private final static Logger logger = LoggerFactory.getLogger(AmqpJavaClientDemo.class);
public static void main(String[] args) throws Exception {
//參數說明,請參見上一篇文檔:AMQP用戶端接入說明。
String accessKey = "******";
String accessSecret = "******";
String consumerGroupId = "******";
long timeStamp = System.currentTimeMillis();
//簽名方法:支援hmacmd5,hmacsha1和hmacsha256
String signMethod = "hmacsha1";
//控制台服務端訂閱中消費組狀态頁用戶端ID一欄将顯示clientId參數。
//建議使用機器UUID、MAC位址、IP等唯一辨別等作為clientId。便于您區分識别不同的用戶端。
String clientId = "yutaodemotest";
logger.debug("demo");
logger.error("error","this is my test error info.");
logger.info("info");
logger.error("error");
//UserName組裝方法,請參見上一篇文檔:AMQP用戶端接入說明。
String userName = clientId + "|authMode=aksign"
+ ",signMethod=" + signMethod
+ ",timestamp=" + timeStamp
+ ",authId=" + accessKey
+ ",consumerGroupId=" + consumerGroupId
+ "|";
//password組裝方法,請參見上一篇文檔:AMQP用戶端接入說明。
String signContent = "authId=" + accessKey + "×tamp=" + timeStamp;
String password = doSign(signContent,accessSecret, signMethod);
//按照qpid-jms的規範,組裝連接配接URL。
String connectionUrl = "failover:(amqps://******.iot-amqp.cn-shanghai.aliyuncs.com?amqp.idleTimeout=80000)"
+ "?failover.maxReconnectAttempts=10&failover.reconnectDelay=30";
Hashtable<String, String> hashtable = new Hashtable<>();
hashtable.put("connectionfactory.SBCF",connectionUrl);
hashtable.put("queue.QUEUE", "default");
hashtable.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.qpid.jms.jndi.JmsInitialContextFactory");
Context context = new InitialContext(hashtable);
ConnectionFactory cf = (ConnectionFactory)context.lookup("SBCF");
Destination queue = (Destination)context.lookup("QUEUE");
// Create Connection
Connection connection = cf.createConnection(userName, password);
((JmsConnection) connection).addConnectionListener(myJmsConnectionListener);
// Create Session
// Session.CLIENT_ACKNOWLEDGE: 收到消息後,需要手動調用message.acknowledge()
// Session.AUTO_ACKNOWLEDGE: SDK自動ACK(推薦)
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
connection.start();
// Create Receiver Link
MessageConsumer consumer = session.createConsumer(queue);
consumer.setMessageListener(messageListener);
}
private static MessageListener messageListener = new MessageListener() {
@Override
public void onMessage(Message message) {
try {
byte[] body = message.getBody(byte[].class);
String content = new String(body);
String topic = message.getStringProperty("topic");
String messageId = message.getStringProperty("messageId");
System.out.println("Content:" + content);
logger.info("receive message"
+ ", topic = " + topic
+ ", messageId = " + messageId
+ ", content = " + content);
//如果建立Session選擇的是Session.CLIENT_ACKNOWLEDGE,這裡需要手動ACK。
//message.acknowledge();
//如果要對收到的消息做耗時的處理,請異步處理,確定這裡不要有耗時邏輯。
} catch (Exception e) {
e.printStackTrace();
}
}
};
private static JmsConnectionListener myJmsConnectionListener = new JmsConnectionListener() {
/**
* 連接配接成功建立。
*/
@Override
public void onConnectionEstablished(URI remoteURI) {
logger.info("onConnectionEstablished, remoteUri:{}", remoteURI);
}
/**
* 嘗試過最大重試次數之後,最終連接配接失敗。
*/
@Override
public void onConnectionFailure(Throwable error) {
logger.error("onConnectionFailure, {}", error.getMessage());
}
/**
* 連接配接中斷。
*/
@Override
public void onConnectionInterrupted(URI remoteURI) {
logger.info("onConnectionInterrupted, remoteUri:{}", remoteURI);
}
/**
* 連接配接中斷後又自動重連上。
*/
@Override
public void onConnectionRestored(URI remoteURI) {
logger.info("onConnectionRestored, remoteUri:{}", remoteURI);
}
@Override
public void onInboundMessage(JmsInboundMessageDispatch envelope) {}
@Override
public void onSessionClosed(Session session, Throwable cause) {}
@Override
public void onConsumerClosed(MessageConsumer consumer, Throwable cause) {}
@Override
public void onProducerClosed(MessageProducer producer, Throwable cause) {}
};
/**
* password簽名計算方法,請參見上一篇文檔:AMQP用戶端接入說明。
*/
private static String doSign(String toSignString, String secret, String signMethod) throws Exception {
SecretKeySpec signingKey = new SecretKeySpec(secret.getBytes(), signMethod);
Mac mac = Mac.getInstance(signMethod);
mac.init(signingKey);
byte[] rawHmac = mac.doFinal(toSignString.getBytes());
return Base64.encodeBase64String(rawHmac);
}
}
4、測試結果
Content:{"deviceType":"None","iotId":"QyLOC9FsRiJePV*********","requestId":"null","productKey":"a1QVZRPkS5g","gmtCreate":1575632021248,"deviceName":"MQDevice","items":{"Status":{"value":1,"time":1575632021255},"Data":{"value":"33","time":1575632021255}}}
5、服務端訂閱門戶監控