使用Java 8和Netty 4.1.1.Final,我希望以下测试用例能够成功,但它会超时。什么是我不明白w.r.t. nettys事件循环和任务调度?
public class SchedulerTest {
CountDownLatch latch;
TimerHandler handler;
static class TimerHandler extends ChannelInboundHandlerAdapter {
ChannelHandlerContext ctx;
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
super.channelActive(ctx);
this.ctx = ctx;
}
private void timeout(final long ms) {
ctx.executor().schedule(() -> {
ctx.fireUserEventTriggered(ms);
}, ms, TimeUnit.MILLISECONDS);
}
}
static class TimeoutReactor extends ChannelInboundHandlerAdapter {
CountDownLatch latch;
public TimeoutReactor(CountDownLatch latch) {
super();
this.latch = latch;
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
System.out.println("userEventTriggered");
latch.countDown();
super.userEventTriggered(ctx, evt);
}
}
@Before
public void setUp() throws Exception {
latch = new CountDownLatch(2);
handler = new TimerHandler();
TimeoutReactor reactor = new TimeoutReactor(latch);
new EmbeddedChannel(handler, reactor);
}
@Test(timeout = 1000)
public void test() throws InterruptedException {
handler.timeout(30);
handler.timeout(20);
latch.await();
}
}
答案 0 :(得分:2)
因为EmbeddedChannel不是真实的"通道实现主要用于测试和嵌入式ChannelHandler。你需要调用" runPendingTasks()"在给定的时间范围之后运行它。如果您使用"真实"通道实现它可以在没有任何额外方法调用的情况下工作。