:art: #2663 优化重复消息检查器多实例导致多守护线程的问题，修改成单例+定时任务线程池处理

weixin-java-common/src/main/java/me/chanjar/weixin/common/api/WxMessageInMemoryDuplicateChecker.java

@@ -8,10 +8,12 @@ import java.util.concurrent.atomic.AtomicBoolean;
  * <pre>
  * 默认消息重复检查器.
  * 将每个消息id保存在内存里，每隔5秒清理已经过期的消息id，每个消息id的过期时间是15秒
+ * 替换类WxMessageInMemoryDuplicateCheckerSingleton
  * </pre>
  *
  * @author Daniel Qian
  */
+@Deprecated
 public class WxMessageInMemoryDuplicateChecker implements WxMessageDuplicateChecker {
 
   /**

weixin-java-common/src/main/java/me/chanjar/weixin/common/api/WxMessageInMemoryDuplicateCheckerSingleton.java

@@ -0,0 +1,91 @@
+package me.chanjar.weixin.common.api;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @author jiangby
+ * @version 1.0
+ * <p>
+ *   消息去重，记录消息ID首次出现时的时间戳，
+ *   15S后定时任务触发时废除该记录消息ID
+ * </p>
+ * @date 2022/5/26 1:32
+ */
+@Slf4j
+public class WxMessageInMemoryDuplicateCheckerSingleton implements WxMessageDuplicateChecker {
+
+  /**
+   * 一个消息ID在内存的过期时间：15秒.
+   */
+  private static final Long TIME_TO_LIVE = 15L;
+
+  /**
+   * 每隔多少周期检查消息ID是否过期：5秒.
+   */
+  private static final Long CLEAR_PERIOD = 5L;
+
+  /**
+   * 线程池
+   */
+  private static final ScheduledThreadPoolExecutor SCHEDULED_THREAD_POOL_EXECUTOR = new ScheduledThreadPoolExecutor(1,
+    new ThreadFactoryBuilder().setNameFormat("wxMessage-memory-pool-%d").build(), new ThreadPoolExecutor.AbortPolicy());
+
+  /**
+   * 消息id->消息时间戳的map.
+   */
+  private static final ConcurrentHashMap<String, Long> MSG_ID_2_TIMESTAMP = new ConcurrentHashMap<>();
+
+  static {
+    SCHEDULED_THREAD_POOL_EXECUTOR.scheduleAtFixedRate(() -> {
+      try {
+        Long now = System.currentTimeMillis();
+        MSG_ID_2_TIMESTAMP.entrySet().removeIf(entry -> now - entry.getValue() > TIME_TO_LIVE * 1000);
+      } catch (Exception ex) {
+        log.error("重复消息去重任务出现异常", ex);
+      }
+    }, 1, CLEAR_PERIOD, TimeUnit.SECONDS);
+  }
+
+  /**
+   * 私有化构造方法，避免外部调用
+   */
+  private WxMessageInMemoryDuplicateCheckerSingleton() {
+  }
+
+  /**
+   * 获取单例
+   *
+   * @return 单例对象
+   */
+  public static WxMessageInMemoryDuplicateCheckerSingleton getInstance() {
+    return WxMessageInnerClass.CHECKER_SINGLETON;
+  }
+
+  /**
+   * 内部类实现单例
+   */
+  private static class WxMessageInnerClass {
+     static final WxMessageInMemoryDuplicateCheckerSingleton CHECKER_SINGLETON = new WxMessageInMemoryDuplicateCheckerSingleton();
+  }
+
+  /**
+   * messageId是否重复
+   *
+   * @param messageId messageId
+   * @return 是否
+   */
+  @Override
+  public boolean isDuplicate(String messageId) {
+    if (messageId == null) {
+      return false;
+    }
+    Long timestamp = MSG_ID_2_TIMESTAMP.putIfAbsent(messageId, System.currentTimeMillis());
+    return timestamp != null;
+  }
+}

weixin-java-common/src/test/java/me/chanjar/weixin/common/api/WxMessageInMemoryDuplicateCheckerSingletonTest.java

@@ -0,0 +1,45 @@
+package me.chanjar.weixin.common.api;
+
+import org.testng.annotations.Test;
+
+import java.util.concurrent.TimeUnit;
+
+import static org.testng.Assert.assertFalse;
+import static org.testng.Assert.assertTrue;
+
+/**
+ * @author jiangby
+ * @version 1.0
+ * @description: 作用
+ * @date 2022/5/26 1:46
+ */
+@Test
+public class WxMessageInMemoryDuplicateCheckerSingletonTest {
+
+  private static WxMessageInMemoryDuplicateCheckerSingleton checkerSingleton = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
+
+  public void test() throws InterruptedException {
+    Long[] msgIds = new Long[]{1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L};
+
+    // 第一次检查
+    for (Long msgId : msgIds) {
+      boolean result = checkerSingleton.isDuplicate(String.valueOf(msgId));
+      assertFalse(result);
+    }
+
+    // 初始化后1S进行检查 每五秒检查一次，过期时间为15秒，过15秒再检查
+    TimeUnit.SECONDS.sleep(15);
+    for (Long msgId : msgIds) {
+      boolean result = checkerSingleton.isDuplicate(String.valueOf(msgId));
+      assertTrue(result);
+    }
+
+    // 过6秒再检查
+    TimeUnit.SECONDS.sleep(6);
+    for (Long msgId : msgIds) {
+      boolean result = checkerSingleton.isDuplicate(String.valueOf(msgId));
+      assertFalse(result);
+    }
+
+  }
+}

weixin-java-cp/src/main/java/me/chanjar/weixin/cp/message/WxCpMessageRouter.java

@@ -5,6 +5,7 @@ import lombok.extern.slf4j.Slf4j;
 import me.chanjar.weixin.common.api.WxErrorExceptionHandler;
 import me.chanjar.weixin.common.api.WxMessageDuplicateChecker;
 import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateChecker;
+import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateCheckerSingleton;
 import me.chanjar.weixin.common.session.InternalSession;
 import me.chanjar.weixin.common.session.InternalSessionManager;
 import me.chanjar.weixin.common.session.WxSessionManager;
@@ -71,7 +72,7 @@ public class WxCpMessageRouter {
     ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("WxCpMessageRouter-pool-%d").build();
     this.executorService = new ThreadPoolExecutor(DEFAULT_THREAD_POOL_SIZE, DEFAULT_THREAD_POOL_SIZE,
       0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(), namedThreadFactory);
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
     this.sessionManager = wxCpService.getSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
   }
@@ -82,7 +83,7 @@ public class WxCpMessageRouter {
   public WxCpMessageRouter(WxCpService wxMpService, ExecutorService executorService) {
     this.wxCpService = wxMpService;
     this.executorService = executorService;
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
     this.sessionManager = wxCpService.getSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
   }

weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/message/WxCpTpMessageRouter.java

@@ -5,6 +5,7 @@ import lombok.extern.slf4j.Slf4j;
 import me.chanjar.weixin.common.api.WxErrorExceptionHandler;
 import me.chanjar.weixin.common.api.WxMessageDuplicateChecker;
 import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateChecker;
+import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateCheckerSingleton;
 import me.chanjar.weixin.common.session.InternalSession;
 import me.chanjar.weixin.common.session.InternalSessionManager;
 import me.chanjar.weixin.common.session.WxSessionManager;
@@ -73,7 +74,7 @@ public class WxCpTpMessageRouter {
     ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("WxCpTpMessageRouter-pool-%d").build();
     this.executorService = new ThreadPoolExecutor(DEFAULT_THREAD_POOL_SIZE, DEFAULT_THREAD_POOL_SIZE,
       0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(), namedThreadFactory);
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
     this.sessionManager = wxCpTpService.getSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
   }
@@ -84,7 +85,7 @@ public class WxCpTpMessageRouter {
   public WxCpTpMessageRouter(WxCpTpService wxCpTpService, ExecutorService executorService) {
     this.wxCpTpService = wxCpTpService;
     this.executorService = executorService;
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
     this.sessionManager = wxCpTpService.getSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
   }

weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/message/WxMaMessageRouter.java

@@ -7,6 +7,7 @@ import lombok.Data;
 import me.chanjar.weixin.common.api.WxErrorExceptionHandler;
 import me.chanjar.weixin.common.api.WxMessageDuplicateChecker;
 import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateChecker;
+import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateCheckerSingleton;
 import me.chanjar.weixin.common.session.InternalSession;
 import me.chanjar.weixin.common.session.InternalSessionManager;
 import me.chanjar.weixin.common.session.StandardSessionManager;
@@ -48,7 +49,7 @@ public class WxMaMessageRouter {
       0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(), namedThreadFactory);
     this.sessionManager = new StandardSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
   }
 
   /**
@@ -59,7 +60,7 @@ public class WxMaMessageRouter {
     this.executorService = executorService;
     this.sessionManager = new StandardSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
   }
 
   /**

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMessageRouter.java

@@ -6,6 +6,7 @@ import lombok.extern.slf4j.Slf4j;
 import me.chanjar.weixin.common.api.WxErrorExceptionHandler;
 import me.chanjar.weixin.common.api.WxMessageDuplicateChecker;
 import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateChecker;
+import me.chanjar.weixin.common.api.WxMessageInMemoryDuplicateCheckerSingleton;
 import me.chanjar.weixin.common.session.InternalSession;
 import me.chanjar.weixin.common.session.InternalSessionManager;
 import me.chanjar.weixin.common.session.StandardSessionManager;
@@ -72,7 +73,7 @@ public class WxMpMessageRouter {
     ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("WxMpMessageRouter-pool-%d").build();
     this.executorService = new ThreadPoolExecutor(DEFAULT_THREAD_POOL_SIZE, DEFAULT_THREAD_POOL_SIZE,
       0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(), namedThreadFactory);
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
     this.sessionManager = new StandardSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
   }
@@ -83,7 +84,7 @@ public class WxMpMessageRouter {
   public WxMpMessageRouter(WxMpService wxMpService, ExecutorService executorService) {
     this.wxMpService = wxMpService;
     this.executorService = executorService;
-    this.messageDuplicateChecker = new WxMessageInMemoryDuplicateChecker();
+    this.messageDuplicateChecker = WxMessageInMemoryDuplicateCheckerSingleton.getInstance();
     this.sessionManager = new StandardSessionManager();
     this.exceptionHandler = new LogExceptionHandler();
   }