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??????????
 */
@Data
public 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: ?????
 */
@Slf4j
public 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: ?????
 */
@Slf4j
public 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();
    }
}