Optimize active parameter as empty task code

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/springboot/starter/config/DiscoveryConfiguration.java

@@ -19,6 +19,7 @@ package cn.hippo4j.springboot.starter.config;
 
 import cn.hippo4j.common.model.InstanceInfo;
 import cn.hippo4j.core.toolkit.inet.InetUtils;
+import cn.hippo4j.springboot.starter.core.ClientShutdown;
 import cn.hippo4j.springboot.starter.core.DiscoveryClient;
 import cn.hippo4j.springboot.starter.provider.InstanceInfoProviderFactory;
 import cn.hippo4j.springboot.starter.remote.HttpAgent;
@@ -44,7 +45,14 @@ public class DiscoveryConfiguration {
     }
 
     @Bean
-    public DiscoveryClient hippo4JDiscoveryClient(HttpAgent httpAgent, InstanceInfo instanceInfo) {
+    public ClientShutdown hippo4jClientShutdown() {
-        return new DiscoveryClient(httpAgent, instanceInfo);
+        return new ClientShutdown();
+    }
+
+    @Bean
+    public DiscoveryClient hippo4JDiscoveryClient(HttpAgent httpAgent,
+                                                  InstanceInfo instanceInfo,
+                                                  ClientShutdown hippo4jClientShutdown) {
+        return new DiscoveryClient(httpAgent, instanceInfo, hippo4jClientShutdown);
     }
 }

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/springboot/starter/config/DynamicThreadPoolAutoConfiguration.java

@@ -114,9 +114,10 @@ public class DynamicThreadPoolAutoConfiguration {
     public ClientWorker hippo4jClientWorker(HttpAgent httpAgent,
                                             InetUtils hippo4JInetUtils,
                                             ServerHealthCheck serverHealthCheck,
-                                            DynamicThreadPoolBannerHandler dynamicThreadPoolBannerHandlers) {
+                                            DynamicThreadPoolBannerHandler dynamicThreadPoolBannerHandlers,
+                                            ClientShutdown hippo4jClientShutdown) {
         String identify = IdentifyUtil.generate(environment, hippo4JInetUtils);
-        return new ClientWorker(httpAgent, identify, serverHealthCheck, dynamicThreadPoolBannerHandlers.getVersion());
+        return new ClientWorker(httpAgent, identify, serverHealthCheck, dynamicThreadPoolBannerHandlers.getVersion(), hippo4jClientShutdown);
     }
 
     @Bean
@@ -247,9 +248,4 @@ public class DynamicThreadPoolAutoConfiguration {
     public ThreadPoolPluginRegisterPostProcessor threadPoolPluginRegisterPostProcessor() {
         return new ThreadPoolPluginRegisterPostProcessor();
     }
-
-    @Bean
-    public ClientShutdown hippo4jClientShutdown() {
-        return new ClientShutdown();
-    }
 }

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/springboot/starter/core/ClientShutdown.java

@@ -17,29 +17,48 @@
 
 package cn.hippo4j.springboot.starter.core;
 
+import lombok.Getter;
+
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
-import lombok.Getter;
 
 /**
- * Client Shutdown
+ * Called when the application is closed to avoid data exceptions caused by
+ * long polling on the client side.
+ *
+ * @version 1.5.0
+ * @see <a href="https://github.com/opengoofy/hippo4j/issues/1121" />
  */
 public class ClientShutdown {
 
     @Getter
     private volatile boolean prepareClose = false;
-
-    private CountDownLatch countDownLatch = new CountDownLatch(1);
-
     private final static Long TIME_OUT_SECOND = 1L;
 
+    private static final int DEFAULT_COUNT = 1;
+    private final CountDownLatch countDownLatch = new CountDownLatch(DEFAULT_COUNT);
+
+    /**
+     * Called when the application is closed.
+     *
+     * @throws InterruptedException
+     */
     public void prepareDestroy() throws InterruptedException {
         prepareClose = true;
         countDownLatch.await(TIME_OUT_SECOND, TimeUnit.SECONDS);
     }
 
+    /**
+     * Decrements the count of the latch, releasing all waiting threads if
+     * the count reaches zero.
+     *
+     * <p>If the current count is greater than zero then it is decremented.
+     * If the new count is zero then all waiting threads are re-enabled for
+     * thread scheduling purposes.
+     *
+     * <p>If the current count equals zero then nothing happens.
+     */
     public void countDown() {
         countDownLatch.countDown();
     }
-
 }

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/springboot/starter/core/ClientWorker.java

@@ -60,30 +60,30 @@ import static cn.hippo4j.common.constant.Constants.WORD_SEPARATOR;
 public class ClientWorker implements DisposableBean {
 
     private final long timeout;
-
-    private final HttpAgent agent;
-
     private final String identify;
-
     private final String version;
 
+    private final HttpAgent agent;
     private final ServerHealthCheck serverHealthCheck;
-
     private final ScheduledExecutorService executorService;
+    private final ClientShutdown hippo4jClientShutdown;
 
     private final CountDownLatch awaitApplicationComplete = new CountDownLatch(1);
-
     private final CountDownLatch cacheCondition = new CountDownLatch(1);
-
     private final ConcurrentHashMap<String, CacheData> cacheMap = new ConcurrentHashMap<>(16);
 
     @SuppressWarnings("all")
-    public ClientWorker(HttpAgent httpAgent, String identify, ServerHealthCheck serverHealthCheck, String version) {
+    public ClientWorker(HttpAgent httpAgent,
+                        String identify,
+                        ServerHealthCheck serverHealthCheck,
+                        String version,
+                        ClientShutdown hippo4jClientShutdown) {
         this.agent = httpAgent;
         this.identify = identify;
         this.timeout = CONFIG_LONG_POLL_TIMEOUT;
         this.version = version;
         this.serverHealthCheck = serverHealthCheck;
+        this.hippo4jClientShutdown = hippo4jClientShutdown;
         ScheduledExecutorService executor = Executors.newScheduledThreadPool(1, runnable -> {
             Thread thread = new Thread(runnable);
             thread.setName("client.worker.executor");
@@ -122,7 +122,9 @@ public class ClientWorker implements DisposableBean {
         @Override
         @SneakyThrows
         public void run() {
-            if (executorService.isShutdown()) {
+            if (executorService.isShutdown() || hippo4jClientShutdown.isPrepareClose()) {
+                hippo4jClientShutdown.countDown();
+                log.info("The task of monitoring dynamic thread pool changes has stopped.");
                 return;
             }
             if (cacheMapInitEmptyFlag) {

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/springboot/starter/core/DiscoveryClient.java

@@ -43,20 +43,18 @@ import static cn.hippo4j.common.constant.Constants.BASE_PATH;
 public class DiscoveryClient implements DisposableBean {
 
     private final ScheduledExecutorService scheduler;
-
     private final HttpAgent httpAgent;
-
     private final InstanceInfo instanceInfo;
+    private final ClientShutdown hippo4jClientShutdown;
 
     private volatile long lastSuccessfulHeartbeatTimestamp = -1;
-
     private static final String PREFIX = "DiscoveryClient_";
-
     private final String appPathIdentifier;
 
-    public DiscoveryClient(HttpAgent httpAgent, InstanceInfo instanceInfo) {
+    public DiscoveryClient(HttpAgent httpAgent, InstanceInfo instanceInfo, ClientShutdown hippo4jClientShutdown) {
         this.httpAgent = httpAgent;
         this.instanceInfo = instanceInfo;
+        this.hippo4jClientShutdown = hippo4jClientShutdown;
         this.appPathIdentifier = instanceInfo.getAppName().toUpperCase() + "/" + instanceInfo.getInstanceId();
         this.scheduler = new ScheduledThreadPoolExecutor(
                 new Integer(1),
@@ -115,9 +113,9 @@ public class DiscoveryClient implements DisposableBean {
     }
 
     private void prepareDestroy() throws InterruptedException {
-        this.scheduler.shutdownNow();
+        scheduler.shutdownNow();
-        // try to make sure the ClientWorker is closed first
+        // Try to make sure the ClientWorker is closed first.
-        ApplicationContextHolder.getBean(ClientShutdown.class).prepareDestroy();
+        hippo4jClientShutdown.prepareDestroy();
     }
 
     public class HeartbeatThread implements Runnable {
@@ -133,7 +131,7 @@ public class DiscoveryClient implements DisposableBean {
     private boolean renew() {
         Result renewResult;
         try {
-            if (this.scheduler.isShutdown()) {
+            if (scheduler.isShutdown()) {
                 return false;
             }
             InstanceInfo.InstanceRenew instanceRenew = new InstanceInfo.InstanceRenew()

hippo4j-spring-boot/hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/springboot/starter/remote/ServerHttpAgent.java

@@ -19,12 +19,11 @@ package cn.hippo4j.springboot.starter.remote;
 
 import cn.hippo4j.common.config.ApplicationContextHolder;
 import cn.hippo4j.common.constant.Constants;
+import cn.hippo4j.common.design.builder.ThreadFactoryBuilder;
 import cn.hippo4j.common.toolkit.StringUtil;
 import cn.hippo4j.common.toolkit.http.HttpUtil;
 import cn.hippo4j.common.web.base.Result;
-import cn.hippo4j.common.design.builder.ThreadFactoryBuilder;
 import cn.hippo4j.springboot.starter.config.BootstrapProperties;
-import cn.hippo4j.springboot.starter.core.ClientShutdown;
 import cn.hippo4j.springboot.starter.security.SecurityProxy;
 
 import java.util.HashMap;
@@ -32,12 +31,10 @@ import java.util.Map;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
-import lombok.extern.slf4j.Slf4j;
 
 /**
  * Server http agent.
  */
-@Slf4j
 public class ServerHttpAgent implements HttpAgent {
 
     private final BootstrapProperties dynamicThreadPoolProperties;
@@ -48,8 +45,6 @@ public class ServerHttpAgent implements HttpAgent {
 
     private ServerHealthCheck serverHealthCheck;
 
-    private ClientShutdown clientShutdown;
-
     private ScheduledExecutorService executorService;
 
     private final long securityInfoRefreshIntervalMills = TimeUnit.SECONDS.toMillis(5);
@@ -115,9 +110,6 @@ public class ServerHttpAgent implements HttpAgent {
     public Result httpPostByConfig(String path, Map<String, String> headers, Map<String, String> paramValues, long readTimeoutMs) {
         isHealthStatus();
         injectSecurityInfo(paramValues);
-        if (isPrepareClose()) {
-            return new Result();
-        }
         return HttpUtil.post(buildUrl(path), headers, paramValues, readTimeoutMs, Result.class);
     }
 
@@ -137,18 +129,6 @@ public class ServerHttpAgent implements HttpAgent {
         serverHealthCheck.isHealthStatus();
     }
 
-    private boolean isPrepareClose() {
-        if (clientShutdown == null) {
-            clientShutdown = ApplicationContextHolder.getBean(ClientShutdown.class);
-        }
-        if (clientShutdown.isPrepareClose()) {
-            clientShutdown.countDown();
-            log.info("client prepare shutdown");
-            return true;
-        }
-        return false;
-    }
-
     private Map injectSecurityInfo(Map<String, String> params) {
         if (StringUtil.isNotBlank(securityProxy.getAccessToken())) {
             params.put(Constants.ACCESS_TOKEN, securityProxy.getAccessToken());