测试ActiveMQ主从复制

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前天搭建了一个避免单点故障的基于zokeeper和leveldb的store。昨天测过了，kill掉Master，客户端确实是可以自动切换到被新推举出来的broker。但是消息是否也被复制过去了？会不会造成消息的丢失还需要测试一下。

测试流程

1.编写Sender和Receiver代码，通过客户端配置failover 进行一次正常的消息的发送和收，确保消息的传递是正常的。
2.通过Sender发送一段正常的消息到broker，但是不接受，然后kill 掉当前主broker，然后在运行Receiver代码，查看消息是否接受到。

步骤一

package com.shiquanjiumei.test;import javax.jms.Connection;import javax.jms.ConnectionFactory;import javax.jms.DeliveryMode;import javax.jms.Destination;import javax.jms.MessageProducer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnection;import org.apache.activemq.ActiveMQConnectionFactory;public class TestMQSender {     private static final int SEND_NUMBER = 5;        public static void main(String[] args) {            // ConnectionFactory ：连接工厂，JMS 用它创建连接            ConnectionFactory connectionFactory;            // Connection ：JMS 客户端到JMS Provider 的连接            Connection connection = null;            // Session： 一个发送或接收消息的线程            Session session;            // Destination ：消息的目的地;消息发送给谁.            Destination destination;            // MessageProducer：消息发送者            MessageProducer producer;            // TextMessage message;            // 构造ConnectionFactory实例对象，此处采用ActiveMq的实现jar            connectionFactory = new ActiveMQConnectionFactory(                    ActiveMQConnection.DEFAULT_USER,                    ActiveMQConnection.DEFAULT_PASSWORD,                    "failover:(tcp://IP:61616,tcp://IP:61617,tcp://IP:61618)");            try {                // 构造从工厂得到连接对象                connection = connectionFactory.createConnection();                // 启动                connection.start();                // 获取操作连接                session = connection.createSession(Boolean.TRUE,                        Session.AUTO_ACKNOWLEDGE);                // 获取session注意参数值xingbo.xu-queue是一个服务器的queue，须在在ActiveMq的console配置                destination = session.createQueue("FirstQueue");                // 得到消息生成者【发送者】                producer = session.createProducer(destination);                // 设置不持久化，此处学习，实际根据项目决定                producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);                // 构造消息，此处写死，项目就是参数，或者方法获取                sendMessage(session, producer);                session.commit();            } catch (Exception e) {                e.printStackTrace();            } finally {                try {                    if (null != connection)                        connection.close();                } catch (Throwable ignore) {                }            }        }        public static void sendMessage(Session session, MessageProducer producer)                throws Exception {//          for (int i = 1; i <= SEND_NUMBER; i++) {                TextMessage message = session                        .createTextMessage("ActiveMq 发送的消息:yivan" /*+ i*/);                // 发送消息到目的地方                System.out.println("发送消息：" + "ActiveMq 发送的消息：yivan" /*+ i*/);                producer.send(message);//          }        }}

接受端代码

package com.shiquanjiumei.test;import javax.jms.Connection;import javax.jms.ConnectionFactory;import javax.jms.Destination;import javax.jms.MessageConsumer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnection;import org.apache.activemq.ActiveMQConnectionFactory;public class TestMQReceiver {     public static void main(String[] args) {            // ConnectionFactory ：连接工厂，JMS 用它创建连接            ConnectionFactory connectionFactory;            // Connection ：JMS 客户端到JMS Provider 的连接            Connection connection = null;            // Session： 一个发送或接收消息的线程            Session session;            // Destination ：消息的目的地;消息发送给谁.            Destination destination;            // 消费者，消息接收者            MessageConsumer consumer;            connectionFactory = new ActiveMQConnectionFactory(                    ActiveMQConnection.DEFAULT_USER,                    ActiveMQConnection.DEFAULT_PASSWORD,                    "failover:(tcp://IP:61616,tcp://IP:61617,tcp://IP:61618)");            try {                // 构造从工厂得到连接对象                connection = connectionFactory.createConnection();                // 启动                connection.start();                // 获取操作连接                session = connection.createSession(Boolean.FALSE,                        Session.AUTO_ACKNOWLEDGE);                // 获取session注意参数值xingbo.xu-queue是一个服务器的queue，须在在ActiveMq的console配置                destination = session.createQueue("FirstQueue");                consumer = session.createConsumer(destination);                while (true) {                    //设置接收者接收消息的时间，为了便于测试，这里谁定为100s                    TextMessage message = (TextMessage) consumer.receive(100000);                    if (null != message) {                        System.out.println("收到消息" + message.getText());                    } else {                        break;                    }                }            } catch (Exception e) {                e.printStackTrace();            } finally {                try {                    if (null != connection)                        connection.close();                } catch (Throwable ignore) {                }            }        }}

步骤一比较简单,结果表明现阶段运行时正常的

发送消息：ActiveMq 发送的消息：yivan

步骤二

先运行Sender，向队列中发送消息，可以看到有一条待消费信息，但是没有消费者。
这里写图片描述

接下来，登录linux kill掉主Master，我现在的Master是61617.通过观察日志
在杀死主进程的一刹那是拒绝链接的，最后当61618被推出来当主的时候，又正常了。

DEBUG 2015-12-09 15:07:12,718 org.apache.activemq.util.ThreadPoolUtils: Forcing shutdown of ExecutorService: java.util.concurrent.ThreadPoolExecutor@288c2c89[Running, pool size = 1, active threads = 0, queued tasks = 0, completed tasks = 1]DEBUG 2015-12-09 15:07:12,718 org.apache.activemq.transport.failover.FailoverTransport: Attempting  7th  connect to: tcp://127.0.0.1:61616DEBUG 2015-12-09 15:07:12,719 org.apache.activemq.transport.failover.FailoverTransport: Connect fail to: tcp://127.0.0.1:61616, reason: java.net.ConnectException: 拒绝连接DEBUG 2015-12-09 15:07:12,719 org.apache.activemq.transport.tcp.TcpTransport: Stopping transport tcp://127.0.0.1:61616DEBUG 2015-12-09 15:07:12,719 org.apache.activemq.thread.TaskRunnerFactory: Initialized TaskRunnerFactory[ActiveMQ Task] using ExecutorService: java.util.concurrent.ThreadPoolExecutor@61501cb0[Running, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0]DEBUG 2015-12-09 15:07:12,722 org.apache.activemq.transport.tcp.TcpTransport$1: Closed socket Socket[unconnected]DEBUG 2015-12-09 15:07:12,722 org.apache.activemq.util.ThreadPoolUtils: Forcing shutdown of ExecutorService: java.util.concurrent.ThreadPoolExecutor@61501cb0[Running, pool size = 1, active threads = 0, queued tasks = 0, completed tasks = 1]DEBUG 2015-12-09 15:07:12,722 org.apache.activemq.transport.failover.FailoverTransport: Attempting  7th  connect to: tcp://127.0.0.1:61617DEBUG 2015-12-09 15:07:12,723 org.apache.activemq.transport.failover.FailoverTransport: Connect fail to: tcp://127.0.0.1:61617, reason: java.net.ConnectException: 拒绝连接DEBUG 2015-12-09 15:07:12,724 org.apache.activemq.transport.tcp.TcpTransport: Stopping transport tcp://127.0.0.1:61617DEBUG 2015-12-09 15:07:12,724 org.apache.activemq.thread.TaskRunnerFactory: Initialized TaskRunnerFactory[ActiveMQ Task] using ExecutorService: java.util.concurrent.ThreadPoolExecutor@4a66875b[Running, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0]DEBUG 2015-12-09 15:07:12,724 org.apache.activemq.transport.tcp.TcpTransport$1: Closed socket Socket[unconnected]DEBUG 2015-12-09 15:07:12,724 org.apache.activemq.util.ThreadPoolUtils: Forcing shutdown of ExecutorService: java.util.concurrent.ThreadPoolExecutor@4a66875b[Running, pool size = 1, active threads = 0, queued tasks = 0, completed tasks = 1]DEBUG 2015-12-09 15:07:12,725 org.apache.activemq.transport.failover.FailoverTransport: Waiting 1280 ms before attempting connectionDEBUG 2015-12-09 15:07:14,006 org.apache.activemq.transport.failover.FailoverTransport: urlList connectionList:[tcp://127.0.0.1:61618, tcp://127.0.0.1:61616, tcp://127.0.0.1:61617], from: [tcp://127.0.0.1:61616, tcp://127.0.0.1:61617, tcp://127.0.0.1:61618]DEBUG 2015-12-09 15:07:14,006 org.apache.activemq.transport.failover.FailoverTransport: Waiting 2560 ms before attempting connection. DEBUG 2015-12-09 15:07:16,196 org.springframework.web.servlet.DispatcherServlet: DispatcherServlet with name 'front' processing POST request for [/clouds/customer/getcustomerdata.shtml]DEBUG 2015-12-09 15:07:16,196 org.springframework.web.servlet.handler.AbstractUrlHandlerMapping: Mapping [/customer/getcustomerdata.shtml] to HandlerExecutionChain with handler [com.shiquanjiumei.controller.interfaces.CustomerDataController@58c8b978] and 1 interceptorDEBUG 2015-12-09 15:07:16,197 org.springframework.web.bind.annotation.support.HandlerMethodInvoker: Invoking request handler method: public void com.shiquanjiumei.controller.interfaces.CustomerDataController.getCustomerMessage(java.lang.String,java.lang.String,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.net.UnknownHostExceptionDEBUG 2015-12-09 15:07:16,197 org.springframework.beans.factory.support.AbstractBeanFactory: Returning cached instance of singleton bean 'transactionManager'DEBUG 2015-12-09 15:07:16,197 org.springframework.transaction.support.AbstractPlatformTransactionManager: Creating new transaction with name [com.shiquanjiumei.service.impl.BaseSetingServiceImpl.getCustomerMessage]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''DEBUG 2015-12-09 15:07:16,197 com.mchange.v2.resourcepool.BasicResourcePool: trace com.mchange.v2.resourcepool.BasicResourcePool@1db6ed76 [managed: 6, unused: 5, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@20f78840)DEBUG 2015-12-09 15:07:16,197 org.springframework.jdbc.datasource.DataSourceTransactionManager: Acquired Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@1fc9a6ad] for JDBC transactionDEBUG 2015-12-09 15:07:16,197 org.springframework.jdbc.datasource.DataSourceTransactionManager: Switching JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@1fc9a6ad] to manual commitDEBUG 2015-12-09 15:07:16,198 org.mybatis.spring.SqlSessionUtils: Creating a new SqlSessionDEBUG 2015-12-09 15:07:16,198 org.mybatis.spring.SqlSessionUtils: Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@6fddb828]DEBUG 2015-12-09 15:07:16,198 org.mybatis.spring.transaction.SpringManagedTransaction: JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@1fc9a6ad] will be managed by SpringDEBUG 2015-12-09 15:07:16,199 org.apache.ibatis.logging.jdbc.BaseJdbcLogger: ==>  Preparing: select * from t_customer where registerTime between ? and ? DEBUG 2015-12-09 15:07:16,199 org.apache.ibatis.logging.jdbc.BaseJdbcLogger: ==> Parameters: 2015-12-09 03:07:30(String), 2015-12-09 03:07:40(String)DEBUG 2015-12-09 15:07:16,200 org.apache.ibatis.logging.jdbc.BaseJdbcLogger: <==      Total: 0DEBUG 2015-12-09 15:07:16,200 org.mybatis.spring.SqlSessionUtils: Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@6fddb828]DEBUG 2015-12-09 15:07:16,200 org.mybatis.spring.SqlSessionUtils$SqlSessionSynchronization: Transaction synchronization committing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@6fddb828]DEBUG 2015-12-09 15:07:16,200 org.mybatis.spring.SqlSessionUtils$SqlSessionSynchronization: Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@6fddb828]DEBUG 2015-12-09 15:07:16,200 org.mybatis.spring.SqlSessionUtils$SqlSessionSynchronization: Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@6fddb828]DEBUG 2015-12-09 15:07:16,200 org.springframework.transaction.support.AbstractPlatformTransactionManager: Initiating transaction commitDEBUG 2015-12-09 15:07:16,200 org.springframework.jdbc.datasource.DataSourceTransactionManager: Committing JDBC transaction on Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@1fc9a6ad]DEBUG 2015-12-09 15:07:16,201 org.springframework.jdbc.datasource.DataSourceTransactionManager: Releasing JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@1fc9a6ad] after transactionDEBUG 2015-12-09 15:07:16,201 org.springframework.jdbc.datasource.DataSourceUtils: Returning JDBC Connection to DataSourceDEBUG 2015-12-09 15:07:16,201 com.mchange.v2.resourcepool.BasicResourcePool: trace com.mchange.v2.resourcepool.BasicResourcePool@1db6ed76 [managed: 6, unused: 5, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@20f78840)DEBUG 2015-12-09 15:07:16,201 org.springframework.web.servlet.DispatcherServlet: Null ModelAndView returned to DispatcherServlet with name 'front': assuming HandlerAdapter completed request handlingDEBUG 2015-12-09 15:07:16,202 org.springframework.web.servlet.FrameworkServlet: Successfully completed requestDEBUG 2015-12-09 15:07:16,566 org.apache.activemq.transport.failover.FailoverTransport: Attempting  8th  connect to: tcp://127.0.0.1:61618

但是当我查看后台或者运行接受Receiveder代码的时候，原来的消息丢失了。这怎么可以，这还怎么玩。
这里写图片描述

其实问题在Sender的代码中
将NON_PERSISTENT 改为PERSISTENT

  // 设置不持久化，实际根据项目决定  producer.setDeliveryMode(DeliveryMode.PERSISTENT);

在运行一遍测试流程2，发现及时当时收到消息的是server1 ，你讲server1 kill 掉后，用Recevieder的代码从新的broker中接受依旧能接受到，原因就是他进行了LevelDB本地存贮，这种文件系统是从ActiveMQ5.8之后引进的，它和KahaDB非常相似，也是基于文件的本地数据库储存形式，但是它提供比KahaDB更快的持久性。

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