!353 feat：新增当审计消息达到一定数量时，发送审计消息的收集器。

Merge pull request !353 from 王帅/main

mybatis-flex-core/src/main/java/com/mybatisflex/core/audit/AbstractMessageCollector.java

@@ -0,0 +1,77 @@
+/*
+ *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package com.mybatisflex.core.audit;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/**
+ * 抽象消息收集器。
+ *
+ * @author 王帅
+ * @since 2023-09-28
+ */
+public abstract class AbstractMessageCollector implements MessageCollector {
+
+    private final MessageReporter messageSender;
+    private final List<AuditMessage> messages = Collections.synchronizedList(new ArrayList<>());
+    private final ReentrantReadWriteLock rrwLock = new ReentrantReadWriteLock();
+
+    protected AbstractMessageCollector(MessageReporter messageSender) {
+        this.messageSender = messageSender;
+    }
+
+    @Override
+    public void collect(AuditMessage message) {
+        try {
+            rrwLock.readLock().lock();
+            messages.add(message);
+        } finally {
+            rrwLock.readLock().unlock();
+        }
+    }
+
+    protected void doSendMessages() {
+        if (messages.isEmpty()) {
+            return;
+        }
+        List<AuditMessage> sendMessages;
+        try {
+            rrwLock.writeLock().lock();
+            sendMessages = new ArrayList<>(messages);
+            messages.clear();
+        } finally {
+            rrwLock.writeLock().unlock();
+        }
+        messageSender.sendMessages(sendMessages);
+    }
+
+    public void release() {
+        doSendMessages();
+    }
+
+    protected List<AuditMessage> getMessages() {
+        return messages;
+    }
+
+    protected MessageReporter getMessageSender() {
+        return messageSender;
+    }
+
+}

mybatis-flex-core/src/main/java/com/mybatisflex/core/audit/CountableMessageCollector.java

@@ -0,0 +1,45 @@
+/*
+ *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.mybatisflex.core.audit;
+
+/**
+ * 计数消息收集器，当消息达到指定数量时发送消息。
+ *
+ * @author 王帅
+ * @since 2023-09-28
+ */
+public class CountableMessageCollector extends AbstractMessageCollector {
+
+    private final int count;
+
+    public CountableMessageCollector() {
+        this(1000, new ConsoleMessageReporter());
+    }
+
+    public CountableMessageCollector(int count, MessageReporter messageSender) {
+        super(messageSender);
+        this.count = count;
+    }
+
+    @Override
+    public void collect(AuditMessage message) {
+        super.collect(message);
+        if (getMessages().size() >= count) {
+            new Thread(this::doSendMessages).start();
+        }
+    }
+
+}

mybatis-flex-core/src/main/java/com/mybatisflex/core/audit/ScheduledMessageCollector.java

@@ -15,24 +15,16 @@
  */
 package com.mybatisflex.core.audit;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
-import java.util.concurrent.locks.ReentrantReadWriteLock;
 
 /**
  * 默认的审计消息收集器，其收集消息后，定时通过消息发送器{@link MessageReporter}把消息发送过去
  */
-public class ScheduledMessageCollector implements MessageCollector, Runnable {
+public class ScheduledMessageCollector extends AbstractMessageCollector {
 
     private final ScheduledExecutorService scheduler;
-    private final MessageReporter messageSender;
-
-    private final List<AuditMessage> messages = Collections.synchronizedList(new ArrayList<>());
-    private final ReentrantReadWriteLock rrwLock = new ReentrantReadWriteLock();
 
     public ScheduledMessageCollector() {
         this(10, new ConsoleMessageReporter());
@@ -40,45 +32,17 @@ public class ScheduledMessageCollector implements MessageCollector, Runnable {
 
 
     public ScheduledMessageCollector(long period, MessageReporter messageSender) {
-        this.messageSender = messageSender;
+        super(messageSender);
         this.scheduler = Executors.newSingleThreadScheduledExecutor(runnable -> {
             Thread thread = new Thread(runnable, "ScheduledMessageCollector");
             thread.setDaemon(true);
             return thread;
         });
-        this.scheduler.scheduleAtFixedRate(this, period, period, TimeUnit.SECONDS);
+        this.scheduler.scheduleAtFixedRate(this::doSendMessages, period, period, TimeUnit.SECONDS);
-    }
-
-
-    @Override
-    public void collect(AuditMessage message) {
-        try {
-            rrwLock.readLock().lock();
-            messages.add(message);
-        } finally {
-            rrwLock.readLock().unlock();
-        }
-    }
-
-
-    @Override
-    public void run() {
-        if (messages.isEmpty()) {
-            return;
-        }
-        List<AuditMessage> sendMessages;
-        try {
-            rrwLock.writeLock().lock();
-            sendMessages = new ArrayList<>(messages);
-            messages.clear();
-        } finally {
-            rrwLock.writeLock().unlock();
-        }
-        messageSender.sendMessages(sendMessages);
     }
 
     public void release() {
-        run(); //clear the messages
+        doSendMessages(); //clear the messages
         scheduler.shutdown();
     }