feat: 心跳

src/main/java/org/jetlinks/protocol/official/TopicMessageCodec.java

 package org.jetlinks.protocol.official;
 
+import com.alibaba.fastjson.JSONObject;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.SneakyThrows;
 import org.hswebframework.web.bean.FastBeanCopier;
@@ -21,10 +22,8 @@ import org.reactivestreams.Publisher;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Optional;
-import java.util.StringJoiner;
+import java.nio.charset.StandardCharsets;
+import java.util.*;
 import java.util.function.Function;
 
 public enum TopicMessageCodec {
@@ -282,6 +281,22 @@ public enum TopicMessageCodec {
     //状态检查
     stateCheck("/*/state-check", DeviceStateCheckMessage.class),
     stateCheckReply("/*/state-check/reply", DeviceStateCheckMessageReply.class),
+    //心跳
+    heartbeat("/*/heartbeat", DeviceLogMessage.class) {
+        @Override
+        Publisher<DeviceMessage> doDecode(ObjectMapper mapper, String[] topic, byte[] payload) {
+            JSONObject jsonObject = JSONObject.parseObject(new String(payload, StandardCharsets.UTF_8));
+            JSONObject properties = jsonObject.getJSONObject("payload");
+            DeviceLogMessage msg = new DeviceLogMessage();
+            Map<String, Object> content = new HashMap<>();
+            content.put("deviceId", topic[1]);
+            content.put("messageType", "HEARTBEAT");
+            content.put("properties", properties.getInnerMap());
+            content.put("timestamp", msg.getTimestamp());
+            msg.setLog(JSONObject.toJSONString(content));
+            return Mono.just(msg);
+        }
+    },
     ;
 
     TopicMessageCodec(String topic,