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<dependency> <groupId>com.lmax</groupId> <artifactId>disruptor</artifactId> <version>3.2.1</version></dependency><dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.8</version> <optional>true</optional></dependency>package com.zhz.disruptor.event;import lombok.Data;/** * @author ：zhz * @date ：Created in 2020/12/30 * @version: V1.0 * @slogan: 天下风云出我辈，一入代码岁月催 * @description: 定义事件event 通过Disruptor 进行交换的数据类型。 **/@Datapublic class LongEvent { private Long value;}package com.zhz.disruptor.event;import com.lmax.disruptor.EventFactory;/** * @author ：zhz * @date ：Created in 2020/12/30 * @version: V1.0 * @slogan: 天下风云出我辈，一入代码岁月催 * @description: 定义事件工厂 **/public class LongEventFactory implements EventFactory<LongEvent> { @Override public LongEvent newInstance() { return new LongEvent(); }}package com.zhz.disruptor;import com.lmax.disruptor.EventHandler;import com.zhz.disruptor.event.LongEvent;import lombok.extern.slf4j.Slf4j;/** * @author ：zhz * @date ：Created in 2020/12/30 * @version: V1.0 * @slogan: 天下风云出我辈，一入代码岁月催 * @description: 事件消费者 **/@Slf4jpublic class LongEventHandler implements EventHandler<LongEvent> { private long serial = 0; public LongEventHandler(long serial){ this.serial = serial; } @Override public void onEvent(LongEvent event, long sequence, boolean endOfBatch) throws Exception { log.info("消费者-{}:{}",this.serial,event.getValue()); }}package com.zhz.disruptor;import com.lmax.disruptor.RingBuffer;import com.zhz.disruptor.event.LongEvent;import lombok.extern.slf4j.Slf4j;import java.nio.ByteBuffer;/** * @author ：zhz * @date ：Created in 2020/12/30 * @version: V1.0 * @slogan: 天下风云出我辈，一入代码岁月催 * @description: 事件生产者 **/@Slf4jpublic class LongEventProducer { public final RingBuffer<LongEvent> ringBuffer; public LongEventProducer(RingBuffer<LongEvent> ringBuffer) { this.ringBuffer = ringBuffer; } public void onData(ByteBuffer byteBuffer) { // 1.ringBuffer 事件队列 下一个槽 long sequence = ringBuffer.next(); Long data = null; try { //2.取出空的事件队列 LongEvent event = ringBuffer.get(sequence); //3.获取事件队列传递的数据 data = byteBuffer.getLong(0); event.setValue(data); try { Thread.sleep(10); } catch (InterruptedException e) { e.printStackTrace(); } } finally { log.info("生产者准备发送数据"); //4.发布事件, //注意，最后的 ringBuffer.publish 方法必须包含在 finally 中以确保必须得到调用； // 如果某个请求的 sequence 未被提交，将会堵塞后续的发布操作或者其它的 producer。 ringBuffer.publish(sequence); } }}package com.zhz.disruptor;import com.lmax.disruptor.EventFactory;import com.lmax.disruptor.RingBuffer;import com.lmax.disruptor.YieldingWaitStrategy;import com.lmax.disruptor.dsl.Disruptor;import com.lmax.disruptor.dsl.ProducerType;import com.zhz.disruptor.event.LongEvent;import com.zhz.disruptor.event.LongEventFactory;import java.nio.ByteBuffer;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;/** * @author ：zhz * @date ：Created in 2020/12/30 * @version: V1.0 * @slogan: 天下风云出我辈，一入代码岁月催 * @description: **/public class DisruptorMain { public static void main(String[] args) { // 1.创建一个可缓存的线程 提供线程来出发Consumer 的事件处理 ExecutorService executor = Executors.newCachedThreadPool(); // 2.创建工厂 EventFactory eventFactory = new LongEventFactory(); // 3.创建ringBuffer 大小,ringBufferSize大小一定要是2的N次方 int ringBufferSize = 1024; // 4.创建Disruptor Disruptor<LongEvent> disruptor = new Disruptor<LongEvent>(eventFactory, ringBufferSize, executor, ProducerType.SINGLE, new YieldingWaitStrategy()); // 5.连接消费端方法 disruptor.handleEventsWith(new LongEventHandler(1),new LongEventHandler(2)); // 6.启动 disruptor.start(); // 7.创建RingBuffer容器 RingBuffer<LongEvent> ringBuffer = disruptor.getRingBuffer(); // 8.创建生产者 LongEventProducer producer = new LongEventProducer(ringBuffer); // 9.指定缓冲区大小 ByteBuffer byteBuffer = ByteBuffer.allocate(8); for (int i = 1; i <= 10; i++) { byteBuffer.putLong(0,i); producer.onData(byteBuffer); } //10.关闭disruptor和executor disruptor.shutdown(); executor.shutdown(); }}我是小白弟弟，一个在互联网行业的小白，立志成为一名架构师
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