java - Vertx 测试部署 Verticle 的上下文问题

Question

所以这有点偷偷摸摸，它不会 100% 发生，但情况是这样的:

我创建了一个 JUnit 集成类，声明了一个 Rule 在上下文中运行，然后我从规则中提取了 vertx 对象。然后我将新的 verticle 部署到 vertx，如果尝试部署超过 ~3-4 个 verticle，我会为每个 verticle 得到这个:

Jan 09, 2017 2:43:33 PM io.vertx.core.impl.ContextImpl
SEVERE: Unhandled exception
java.lang.IllegalStateException: Result is already complete: succeeded
    at io.vertx.core.impl.FutureImpl.checkComplete(FutureImpl.java:164)
    at io.vertx.core.impl.FutureImpl.complete(FutureImpl.java:108)
    at io.vertx.core.impl.FutureImpl.handle(FutureImpl.java:135)
    at io.vertx.core.impl.FutureImpl.handle(FutureImpl.java:23)
    at io.vertx.core.eventbus.impl.EventBusImpl.lambda$callCompletionHandlerAsync$2(EventBusImpl.java:340)
    at io.vertx.core.impl.ContextImpl.lambda$wrapTask$2(ContextImpl.java:316)
    at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:440)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873)
    at java.lang.Thread.run(Thread.java:745)

导致此问题的代码如下所示:

@RunWith(VertxUnitRunner.class)
public class VertxTest {

    @Rule
    public RunTestOnContext rule = new RunTestOnContext(Vertx::vertx);

    @Test
    public void testLinearExecution(TestContext context) {
        Vertx vertx = rule.vertx();
        vertx.deployVerticle(new AbstractVerticle() {
            @Override
            public void start() throws Exception {
                this.vertx.eventBus().consumer("bla", event -> {});
            }
        });
        vertx.deployVerticle(new AbstractVerticle() {
            @Override
            public void start() throws Exception {
                this.vertx.eventBus().consumer("bla", event -> {});
            }
        });
        vertx.deployVerticle(new AbstractVerticle() {
            @Override
            public void start() throws Exception {
                this.vertx.eventBus().consumer("bla", event -> {});
            }
        });
        vertx.deployVerticle(new AbstractVerticle() {
            @Override
            public void start() throws Exception {
                this.vertx.eventBus().consumer("bla", event -> {});
            }
        });
        vertx.deployVerticle(new AbstractVerticle() {
            @Override
            public void start() throws Exception {
                this.vertx.eventBus().consumer("bla", event -> {});
            }
        });
        vertx.deployVerticle(new AbstractVerticle() {
            @Override
            public void start() throws Exception {
                this.vertx.eventBus().consumer("bla", event -> {});
            }
        });
    }

}

这可能取决于运行它的机器，但我的猜测是，如果它没有重现，请添加更多这样的人以使其更有可能出现:

vertx.deployVerticle(new AbstractVerticle() {
    @Override
    public void start() throws Exception {
        this.vertx.eventBus().consumer("bla", event -> {});
    }
});

另一件事要提的是，如果我用 Vertx vertx = Vertx.vertx(); 更改 Vertx vertx = Rule.vertx(); ，我会收到警告消息到控制台，但问题消失了。

所以，我做错了什么吗？这是一个问题吗？

Answer 1

您使用的是3.3.3版本吗？您可能会遇到以下问题:https://github.com/eclipse/vert.x/issues/1625 (已在 master 中修复)