Disruptor?????????????????????

1. ?????????

1.1 ????

??????Disruptor?????????????????????


       
    
     com.lmax
        
    
     disruptor
        
    
     3.2.1
    
   
       
    
     org.project.lombok
        
    
     lombok
        
    
     1.18.8
        
    
     true

1.2 ??Event

?com.zhz.disruptor.event???????LongEvent?

package com.zhz.disruptor.event;import lombok.Data;/** * @author : zhz * @date : Created in 2020/12/30 * @version: V1.0 * @slogan: ??????????????? * @description: ????event ??Disruptor?????????? */@Datapublic class LongEvent {    private Long value;}

1.3 ??EventFactory

?com.zhz.disruptor.event????????LongEventFactory?

package com.zhz.disruptor.event;import com.lmax.disruptor.EventFactory;/** * @author : zhz * @date : Created in 2020/12/30 * @version: V1.0 * @slogan: ??????????????? * @description: ?????? */public class LongEventFactory implements EventFactory
   
     {    @Override    public LongEvent newInstance() {        return new LongEvent();    }}

1.4 ???????

?com.zhz.disruptor?????????LongEventHandler?

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: ??????????????? * @description: ????? */@Slf4jpublic class LongEventHandler implements EventHandler
   
     {    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("???-{}: {}", this.serial, event.getValue());    }}

1.5 ?????

?com.zhz.disruptor?????????LongEventProducer?

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: ??????????????? * @description: ????? */@Slf4jpublic class LongEventProducer {    private final RingBuffer ringBuffer;    public LongEventProducer(RingBuffer ringBuffer) {        this.ringBuffer = ringBuffer;    }    public void onData(ByteBuffer byteBuffer) {        long sequence = ringBuffer.next();        Long data = null;        try {            LongEvent event = ringBuffer.get(sequence);            data = byteBuffer.getLong(0);            event.setValue(data);            try {                Thread.sleep(10);            } catch (InterruptedException e) {                e.printStackTrace();            }        } finally {            log.info("?????????");            ringBuffer.publish(sequence);        }    }}

1.6 ??Main??

?com.zhz.disruptor???????DisruptorMain?

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: ??????????????? * @description:  */public class DisruptorMain {    public static void main(String[] args) {        // ?????????????????Consumer?????        ExecutorService executor = Executors.newCachedThreadPool();        // ????        EventFactory
   
     eventFactory = new LongEventFactory();        // ??ringBuffer???????2?N??        int ringBufferSize = 1024;        // ??Disruptor        Disruptor
    
      disruptor = new Disruptor<>(eventFactory, ringBufferSize, executor, ProducerType.SINGLE, new YieldingWaitStrategy());        // ???????        disruptor.handleEventsWith(new LongEventHandler(1), new LongEventHandler(2));        // ??        disruptor.start();        // ??RingBuffer??        RingBuffer
     
       ringBuffer = disruptor.getRingBuffer();        // ?????        LongEventProducer producer = new LongEventProducer(ringBuffer);        // ???????        ByteBuffer byteBuffer = ByteBuffer.allocate(8);        for (int i = 1; i <= 10; i++) {            byteBuffer.putLong(0, i);            producer.onData(byteBuffer);        }        //??disruptor?executor        disruptor.shutdown();        executor.shutdown();    }}