transaction

whatsmars-mq/whatsmars-mq-rocketmq/src/main/java/org/hongxi/whatsmars/mq/rocketmq/transaction/TransactionListenerImpl.java

+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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 org.hongxi.whatsmars.mq.rocketmq.transaction;
+
+import org.apache.rocketmq.client.producer.LocalTransactionState;
+import org.apache.rocketmq.client.producer.TransactionListener;
+import org.apache.rocketmq.common.message.Message;
+import org.apache.rocketmq.common.message.MessageExt;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class TransactionListenerImpl implements TransactionListener {
+    private AtomicInteger transactionIndex = new AtomicInteger(0);
+
+    private ConcurrentHashMap<String, Integer> localTrans = new ConcurrentHashMap<>();
+
+    @Override
+    public LocalTransactionState executeLocalTransaction(Message msg, Object arg) {
+        int value = transactionIndex.getAndIncrement();
+        int status = value % 3;
+        localTrans.put(msg.getTransactionId(), status);
+        return LocalTransactionState.UNKNOW;
+    }
+
+    @Override
+    public LocalTransactionState checkLocalTransaction(MessageExt msg) {
+        Integer status = localTrans.get(msg.getTransactionId());
+        if (null != status) {
+            switch (status) {
+                case 0:
+                    return LocalTransactionState.UNKNOW;
+                case 1:
+                    return LocalTransactionState.COMMIT_MESSAGE;
+                case 2:
+                    return LocalTransactionState.ROLLBACK_MESSAGE;
+                default:
+                    return LocalTransactionState.COMMIT_MESSAGE;
+            }
+        }
+        return LocalTransactionState.COMMIT_MESSAGE;
+    }
+}
\ No newline at end of file

whatsmars-mq/whatsmars-mq-rocketmq/src/main/java/org/hongxi/whatsmars/mq/rocketmq/transaction/TransactionProducer.java

+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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 org.hongxi.whatsmars.mq.rocketmq.transaction;
+
+import org.apache.rocketmq.client.exception.MQClientException;
+import org.apache.rocketmq.client.producer.SendResult;
+import org.apache.rocketmq.client.producer.TransactionListener;
+import org.apache.rocketmq.client.producer.TransactionMQProducer;
+import org.apache.rocketmq.common.message.Message;
+import org.apache.rocketmq.remoting.common.RemotingHelper;
+
+import java.io.UnsupportedEncodingException;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+public class TransactionProducer {
+    public static void main(String[] args) throws MQClientException, InterruptedException {
+        TransactionListener transactionListener = new TransactionListenerImpl();
+        TransactionMQProducer producer = new TransactionMQProducer("please_rename_unique_group_name");
+        ExecutorService executorService = new ThreadPoolExecutor(2, 5, 100, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(2000), new ThreadFactory() {
+            @Override
+            public Thread newThread(Runnable r) {
+                Thread thread = new Thread(r);
+                thread.setName("client-transaction-msg-check-thread");
+                return thread;
+            }
+        });
+
+        producer.setExecutorService(executorService);
+        producer.setTransactionListener(transactionListener);
+        producer.start();
+
+        String[] tags = new String[] {"TagA", "TagB", "TagC", "TagD", "TagE"};
+        for (int i = 0; i < 10; i++) {
+            try {
+                Message msg =
+                    new Message("TopicTest1234", tags[i % tags.length], "KEY" + i,
+                        ("Hello RocketMQ " + i).getBytes(RemotingHelper.DEFAULT_CHARSET));
+                SendResult sendResult = producer.sendMessageInTransaction(msg, null);
+                System.out.printf("%s%n", sendResult);
+
+                Thread.sleep(10);
+            } catch (MQClientException | UnsupportedEncodingException e) {
+                e.printStackTrace();
+            }
+        }
+
+        for (int i = 0; i < 100000; i++) {
+            Thread.sleep(1000);
+        }
+        producer.shutdown();
+    }
+}
\ No newline at end of file