send heartbeat if healthcheck url not configured

spring-cloud-tencent-starters/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java

@@ -177,22 +177,28 @@ public class PolarisServiceRegistry implements ServiceRegistry<Registration> {
      * @param heartbeatRequest 心跳请求
      */
     public void heartbeat(InstanceHeartbeatRequest heartbeatRequest) {
-        heartbeatExecutor.scheduleWithFixedDelay(new Runnable() {
-            @Override
-            public void run() {
-                try {
-                    String healthCheckUrl = String.format("http://%s:%s%s", heartbeatRequest.getHost(), heartbeatRequest.getPort(), polarisProperties.getHealthCheckUrl());
-                    //先判断是否配置了health-check-url，如果配置了，需要先进行服务实例健康检查，如果健康检查通过，则进行心跳上报，如果不通过，则不上报心跳
-                    if (Strings.isNotEmpty(healthCheckUrl) && !OkHttpUtil.get(healthCheckUrl, null)){
-                        log.error("polaris health check failed");
+        heartbeatExecutor.scheduleWithFixedDelay(() -> {
+            try {
+                String healthCheckEndpoint = polarisProperties.getHealthCheckUrl();
+                //先判断是否配置了health-check-url，如果配置了，需要先进行服务实例健康检查，如果健康检查通过，则进行心跳上报，如果不通过，则不上报心跳
+                if (Strings.isNotEmpty(healthCheckEndpoint)) {
+                    if (!healthCheckEndpoint.startsWith("/")) {
+                        healthCheckEndpoint = "/" + healthCheckEndpoint;
+                    }
+
+                    String healthCheckUrl = String.format("http://%s:%s%s", heartbeatRequest.getHost(), heartbeatRequest.getPort(), healthCheckEndpoint);
+
+                    if (!OkHttpUtil.get(healthCheckUrl, null)){
+                        log.error("backend service health check failed. health check endpoint = {}", healthCheckEndpoint);
                         return;
                     }
-                    polarisDiscoveryHandler.getProviderAPI().heartbeat(heartbeatRequest);
-                } catch (PolarisException e) {
-                    log.error("polaris heartbeat[{}]", e.getCode(), e);
-                } catch (Exception e) {
-                    log.error("polaris heartbeat runtime error", e);
                 }
+
+                polarisDiscoveryHandler.getProviderAPI().heartbeat(heartbeatRequest);
+            } catch (PolarisException e) {
+                log.error("polaris heartbeat[{}]", e.getCode(), e);
+            } catch (Exception e) {
+                log.error("polaris heartbeat runtime error", e);
             }
         }, 0, ttl, TimeUnit.SECONDS);
     }