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public class Test { private static Logger logger = LogManager.getLogger(); @SuppressWarnings("unchecked") public static void main(String[] args) throws InterruptedException { // The factory for the event TestEventFactory factory = new TestEventFactory(); // Specify the size of the ring buffer, must be power of 2. int bufferSize = 1024; // Construct the Disruptor Disruptor<TestEvent> disruptor = new Disruptor<TestEvent>(factory, bufferSize, DaemonThreadFactory.INSTANCE, ProducerType.SINGLE, new BlockingWaitStrategy()); // Create EventHandler TestEventHandler handler1 = new TestEventHandler("handler1"); TestEventHandler handler2 = new TestEventHandler("handler2"); TestEventHandler handler3 = new TestEventHandler("handler3"); TestEventHandler handler4 = new TestEventHandler("handler4"); // Connect the handler int count = 100; // Unicast采取WorkPool方式,3个WorkHandler 累计执行100次。 // Event到达时,哪个WorkHandler被调度不确定。 // disruptor.handleEventsWithWorkerPool(handler1, handler2, handler3); // MulticastTest并发处理方式,3个EventHandler,各执行100次,累计300次; // 每个Event到达时,EventHandler的处理顺序不确定。 // 并发( handler1, handler2, handler3) // EventHandler:handler1--85:k-v // EventHandler:handler3--85:k-v // EventHandler:handler2--85:k-v // EventHandler:handler1--86:k-v // EventHandler:handler3--86:k-v // EventHandler:handler2--86:k-v <-----并发顺序不确定 // EventHandler:handler2--87:k-v <-----并发顺序不确定 // EventHandler:handler1--87:k-v // EventHandler:handler3--87:k-v // EventHandler:handler3--88:k-v // EventHandler:handler2--88:k-v // EventHandler:handler1--88:k-v // disruptor.handleEventsWith(handler1, handler2, handler3); // Pipeline串行处理方式,3个EventHandler,各执行100次,累计300次。 // 每个Event到达时,EventHandler的处理顺序与handleEventsWith的顺序一致。 // 顺序:handler1->handler2->handler3 // EventHandler:handler1--97:k-v // EventHandler:handler2--97:k-v // EventHandler:handler3--97:k-v // EventHandler:handler1--98:k-v // EventHandler:handler2--98:k-v // EventHandler:handler3--98:k-v // EventHandler:handler1--99:k-v // EventHandler:handler2--99:k-v // EventHandler:handler3--99:k-v // EventHandler:handler1--100:k-v // EventHandler:handler2--100:k-v // EventHandler:handler3--100:k-v //disruptor.handleEventsWith(handler1).handleEventsWith(handler2).handleEventsWith(handler3); //Diamond //按照 handler1-> 并发(handler2, hander3) ->handler4 调度 disruptor.handleEventsWith(handler1).handleEventsWith(handler2,handler3).handleEventsWith(handler4); // Start the Disruptor, starts all threads running disruptor.start(); // Get the ring buffer from the Disruptor to be used for publishing. RingBuffer<TestEvent> ringBuffer = disruptor.getRingBuffer(); TestEventProducer producer = new TestEventProducer(ringBuffer); for (int i = 1; i <= count; i++) { producer.onEvent("k", "v"); Thread.sleep(100); } Thread.sleep(10000); } }
public class TestEvent implements Event { private String key; private String value; public String getKey() { return key; } public void setKey(String key) { this.key = key; } public String getValue() { return value; } public void setValue(String value) { this.value = value; } }
package com.lands.disruptor.unicast; import com.lmax.disruptor.EventFactory; public class TestEventFactory implements EventFactory<TestEvent> { public TestEvent newInstance() { return new TestEvent(); } }
package com.lands.disruptor.unicast; import java.util.concurrent.atomic.AtomicInteger; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; import com.lmax.disruptor.EventHandler; import com.lmax.disruptor.WorkHandler; public class TestEventHandler implements EventHandler<TestEvent>, WorkHandler<TestEvent> { private static Logger logger = LogManager.getLogger(); private String handlerName; private AtomicInteger count = new AtomicInteger(); public TestEventHandler(String name) { this.handlerName = name; } public String getHandlerName() { return handlerName; } public void onEvent(TestEvent event) throws Exception { logger.info("WorkHandler:" + this.handlerName + "-" + count.decrementAndGet() + ":" + event.getKey() + "-" + event.getValue()); //Thread.sleep(100); } public void onEvent(TestEvent event, long sequence, boolean endOfBatch) throws Exception { logger.info("EventHandler:" + this.handlerName + "-" + count.decrementAndGet() + ":" + event.getKey() + "-" + event.getValue()); //Thread.sleep(100); } }
package com.lands.disruptor.unicast; import com.lands.disruptor.EventProducer; import com.lmax.disruptor.RingBuffer; public class TestEventProducer extends EventProducer<TestEvent> { public TestEventProducer(RingBuffer<TestEvent> ringBuffer) { super(ringBuffer); } @Override public void process(TestEvent event, String... data) { event.setKey(data[0]); event.setValue(data[1]); } }
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