启动NameServer
打开 org.apache.rocketmq.namesrv.NameServerInstanceTest 单元测试类，参考 #startup() 方法，我们编写 #main(String[] args) 静态方法，代码如下：
import org.apache.rocketmq.common.namesrv.NamesrvConfig;
import org.apache.rocketmq.remoting.netty.NettyServerConfig;
public class NameServerStart {
public static void main(String[] args) throws Exception {
// NamesrvConfig 配置
final NamesrvConfig namesrvConfig = new NamesrvConfig();
// NettyServerConfig 配置
final NettyServerConfig nettyServerConfig = new NettyServerConfig();
// 设置端口
nettyServerConfig.setListenPort(9876);
// 创建 NamesrvController 对象，并启动
NamesrvController namesrvController = new NamesrvController(namesrvConfig, nettyServerConfig);
namesrvController.initialize();
namesrvController.start();
// 睡觉，就不起来
Thread.sleep(DateUtils.MILLIS_PER_DAY);
}
}
然后，右键运行，RocketMQ Namesrv 就启动完成。输出日志如下：
20:25:36.373 [NettyEventExecutor] INFO RocketmqRemoting - NettyEventExecutor service started
20:25:36.373 [main] INFO RocketmqCommon - Try to start service thread:FileWatchService started:false lastThread:null
20:25:36.374 [FileWatchService] INFO RocketmqCommon - FileWatchService service started
最后，这是一个可选的步骤，命令行中输入 telnet 127.0.0.1 9876 ，看看是否能连接上 RocketMQ Namesrv 。
macs-MacBook-Pro-3:~ mac$ telnet 127.0.0.1 9876
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
启动 RocketMQ Broker
打开 org.apache.rocketmq.broker.BrokerControllerTest 单元测试类，参考 #testBrokerRestart() 方法，我们编写 #main(String[] args) 方法，代码如下：
import org.apache.commons.lang3.time.DateUtils;
import org.apache.rocketmq.common.BrokerConfig;
import org.apache.rocketmq.common.MQVersion;
import org.apache.rocketmq.remoting.netty.NettyClientConfig;
import org.apache.rocketmq.remoting.netty.NettyServerConfig;
import org.apache.rocketmq.remoting.protocol.RemotingCommand;
import org.apache.rocketmq.store.config.FlushDiskType;
import org.apache.rocketmq.store.config.MessageStoreConfig;
import static org.assertj.core.api.Assertions.assertThat;
public class BrokerStart {
public static void main(String[] args) throws Exception {
// 设置版本号
System.setProperty(RemotingCommand.REMOTING_VERSION_KEY, Integer.toString(MQVersion.CURRENT_VERSION));
// NettyServerConfig 配置
final NettyServerConfig nettyServerConfig = new NettyServerConfig();
nettyServerConfig.setListenPort(10911);
// BrokerConfig 配置
final BrokerConfig brokerConfig = new BrokerConfig();
brokerConfig.setBrokerName("broker-a");
brokerConfig.setNamesrvAddr("127.0.0.1:9876");
// MessageStoreConfig 配置
final MessageStoreConfig messageStoreConfig = new MessageStoreConfig();
messageStoreConfig.setDeleteWhen("04");
messageStoreConfig.setFileReservedTime(48);
messageStoreConfig.setFlushDiskType(FlushDiskType.ASYNC_FLUSH);
messageStoreConfig.setDuplicationEnable(false);
BrokerController brokerController = new BrokerController(
brokerConfig,
nettyServerConfig,
new NettyClientConfig(),
messageStoreConfig
);
assertThat(brokerController.initialize());
brokerController.start();
// 睡觉，就不起来
System.out.println("你猜");
Thread.sleep(DateUtils.MILLIS_PER_DAY);
}
}
然后，右键运行，RocketMQ Broker 就启动完成了。输出日志如下：
你猜
不要懵逼，我们打开下 RocketMQ Namesrv 那，已经输出日志如下
20:28:18.158 [RemotingExecutorThread_1] DEBUG RocketmqNamesrv - receive request, 103 127.0.0.1:52747 RemotingCommand [code=103, language=JAVA, version=333, opaque=0, flag(B)=0, remark=null, extFields={brokerId=0, bodyCrc32=28735049, clusterName=DefaultCluster, brokerAddr=192.168.60.33:10911, haServerAddr=192.168.60.33:10912, compressed=false, brokerName=broker-a}, serializeTypeCurrentRPC=JSON]
20:28:18.209 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, RMQ_SYS_TRANS_HALF_TOPIC QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=6, topicSynFlag=0]
20:28:18.209 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, %RETRY%please_rename_unique_group_name_4 QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=6, topicSynFlag=0]
20:28:18.209 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, BenchmarkTest QueueData [brokerName=broker-a, readQueueNums=1024, writeQueueNums=1024, perm=6, topicSynFlag=0]
20:28:18.209 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, OFFSET_MOVED_EVENT QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=6, topicSynFlag=0]
20:28:18.209 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, macs-MacBook-Pro.local QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=7, topicSynFlag=0]
20:28:18.209 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, TBW102 QueueData [brokerName=broker-a, readQueueNums=8, writeQueueNums=8, perm=7, topicSynFlag=0]
20:28:18.209 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, SELF_TEST_TOPIC QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=6, topicSynFlag=0]
20:28:18.210 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, DefaultCluster QueueData [brokerName=broker-a, readQueueNums=16, writeQueueNums=16, perm=7, topicSynFlag=0]
20:28:18.210 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, DefaultCluster_REPLY_TOPIC QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=6, topicSynFlag=0]
20:28:18.210 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, TopicTest QueueData [brokerName=broker-a, readQueueNums=4, writeQueueNums=4, perm=6, topicSynFlag=0]
20:28:18.210 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, broker-a QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=7, topicSynFlag=0]
20:28:18.210 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new topic registered, %RETRY%TOOLS_CONSUMER QueueData [brokerName=broker-a, readQueueNums=1, writeQueueNums=1, perm=6, topicSynFlag=0]
20:28:18.211 [RemotingExecutorThread_1] INFO RocketmqNamesrv - new broker registered, 192.168.60.33:10911 HAServer: 192.168.60.33:10912
最后，这是一个可选的步骤，命令行中输入 telnet 127.0.0.1 10911 ，看看是否能连接上 RocketMQ Broker 。
启动 RocketMQ Producer
打开 org.apache.rocketmq.example.quickstart.Producer 示例类，代码如下：
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.common.RemotingHelper;
/**
* This class demonstrates how to send messages to brokers using provided {@link DefaultMQProducer}.
*/
public class Producer {
public static void main(String[] args) throws MQClientException, InterruptedException {
/*
* Instantiate with a producer group name.
*/
DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
/*
* Specify name server addresses.
* <p/>
*
* Alternatively, you may specify name server addresses via exporting environmental variable: NAMESRV_ADDR
* <pre>
* {@code
* producer.setNamesrvAddr("name-server1-ip:9876;name-server2-ip:9876");
* }
* </pre>
*/
// <x> 哈哈哈哈
producer.setNamesrvAddr("127.0.0.1:9876");
/*
* Launch the instance.
*/
producer.start();
for (int i = 0; i < 1000; i++) {
try {
/*
* Create a message instance, specifying topic, tag and message body.
*/
Message msg = new Message("TopicTest" /* Topic */,
"TagA" /* Tag */,
("Hello RocketMQ " + i).getBytes(RemotingHelper.DEFAULT_CHARSET) /* Message body */
);
/*
* Call send message to deliver message to one of brokers.
*/
SendResult sendResult = producer.send(msg);
System.out.printf("%s%n", sendResult);
} catch (Exception e) {
e.printStackTrace();
Thread.sleep(1000);
}
}
/*
* Shut down once the producer instance is not longer in use.
*/
producer.shutdown();
}
}
然后，右键运行，RocketMQ Producer 就启动完成。输出日志如下：
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48303DB, offsetMsgId=C0A83C2100002A9F00000000000AB747, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=3], queueOffset=846]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48503DC, offsetMsgId=C0A83C2100002A9F00000000000AB82A, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=0], queueOffset=847]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48703DD, offsetMsgId=C0A83C2100002A9F00000000000AB90D, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=1], queueOffset=847]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48803DE, offsetMsgId=C0A83C2100002A9F00000000000AB9F0, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=2], queueOffset=847]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48A03DF, offsetMsgId=C0A83C2100002A9F00000000000ABAD3, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=3], queueOffset=847]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48B03E0, offsetMsgId=C0A83C2100002A9F00000000000ABBB6, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=0], queueOffset=848]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48D03E1, offsetMsgId=C0A83C2100002A9F00000000000ABC99, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=1], queueOffset=848]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F48E03E2, offsetMsgId=C0A83C2100002A9F00000000000ABD7C, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=2], queueOffset=848]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F49003E3, offsetMsgId=C0A83C2100002A9F00000000000ABE5F, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=3], queueOffset=848]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F49203E4, offsetMsgId=C0A83C2100002A9F00000000000ABF42, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=0], queueOffset=849]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F49503E5, offsetMsgId=C0A83C2100002A9F00000000000AC025, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=1], queueOffset=849]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F49703E6, offsetMsgId=C0A83C2100002A9F00000000000AC108, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=2], queueOffset=849]
SendResult [sendStatus=SEND_OK, msgId=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F49803E7, offsetMsgId=C0A83C2100002A9F00000000000AC1EB, messageQueue=MessageQueue [topic=TopicTest, brokerName=broker-a, queueId=3], queueOffset=849]
20:31:14.616 [NettyClientSelector_1] INFO RocketmqRemoting - closeChannel: close the connection to remote address[127.0.0.1:9876] result: true
20:31:14.622 [NettyClientSelector_1] INFO RocketmqRemoting - closeChannel: close the connection to remote address[192.168.60.33:10911] result: true
启动 RocketMQ Consumer
打开 org.apache.rocketmq.example.quickstart.Consumer 示例类，代码如下：
import java.util.List;
import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.MessageExt;
/**
* This example shows how to subscribe and consume messages using providing {@link DefaultMQPushConsumer}.
*/
public class Consumer {
public static void main(String[] args) throws InterruptedException, MQClientException {
/*
* Instantiate with specified consumer group name.
*/
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("please_rename_unique_group_name_4");
/*
* Specify name server addresses.
* <p/>
*
* Alternatively, you may specify name server addresses via exporting environmental variable: NAMESRV_ADDR
* <pre>
* {@code
* consumer.setNamesrvAddr("name-server1-ip:9876;name-server2-ip:9876");
* }
* </pre>
*/
consumer.setNamesrvAddr("127.0.0.1:9876"); // <x> 哈哈哈哈
/*
* Specify where to start in case the specified consumer group is a brand new one.
*/
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
/*
* Subscribe one more more topics to consume.
*/
consumer.subscribe("TopicTest", "*");
/*
* Register callback to execute on arrival of messages fetched from brokers.
*/
consumer.registerMessageListener(new MessageListenerConcurrently() {
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
ConsumeConcurrentlyContext context) {
System.out.printf("%s Receive New Messages: %s %n", Thread.currentThread().getName(), msgs);
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
});
/*
* Launch the consumer instance.
*/
consumer.start();
System.out.printf("Consumer Started.%n");
}
}
然后，右键运行，RocketMQ Consumer 就启动完成。输入日志如下：
ConsumeMessageThread_11 Receive New Messages: [MessageExt [queueId=1, storeSize=227, queueOffset=829, sysFlag=0, bornTimestamp=1575376274355, bornHost=/192.168.60.33:52799, storeTimestamp=1575376274356, storeHost=/192.168.60.33:10911, msgId=C0A83C2100002A9F00000000000A7935, commitLogOffset=686389, bodyCRC=157816852, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='TopicTest', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=850, CONSUME_START_TIME=1575376362962, UNIQ_KEY=FE800000000000007C285D2A69054BF6000014DAD5DC0EB3F3B30395, CLUSTER=DefaultCluster, WAIT=true, TAGS=TagA}, body=[72, 101, 108, 108, 111, 32, 82, 111, 99, 107, 101, 116, 77, 81, 32, 57, 49, 55], transactionId='null'}]]
