Question

我使用GCloud文档中的示例代码段作为订阅者接收消息。我的pubsub gcloud jar版本是0.19.0-alpha

问题是我可以收到带有属性映射的msg，但我一直有这个例外：

2017-07-12 16：52：25,219 [grpc-default-worker-ELG-1-16] WARN io.netty.util.concurrent.DefaultPromise - io.grpc.netty.NettyClientHandler $ 3抛出异常.operationComplete（） java.util.concurrent.RejectedExecutionException：java.util.concurrent.ScheduledThreadPoolExecutor@25cbe860中的任务java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@fbf4a6d [已终止，池大小= 35，活动线程= 0，排队任务= 0，已完成tasks = 2403] at java.util.concurrent.ThreadPoolExecutor $ AbortPolicy.rejectedExecution（ThreadPoolExecutor.java:2047） at java.util.concurrent.ThreadPoolExecutor.reject（ThreadPoolExecutor.java:823） at java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute（ScheduledThreadPoolExecutor.java:326） at java.util.concurrent.ScheduledThreadPoolExecutor.schedule（ScheduledThreadPoolExecutor.java:533） at java.util.concurrent.ScheduledThreadPoolExecutor.execute（ScheduledThreadPoolExecutor.java:622） at java.util.concurrent.Executors $ DelegatedExecutorService.execute（Executors.java:668）在io.grpc.internal.SerializingExecutor.execute（SerializingExecutor.java:110）在io.grpc.internal.ClientCallImpl $ ClientStreamListenerImpl.onReady（ClientCallImpl.java:573） at io.grpc.internal.DelayedStream $ DelayedStreamListener.onReady（DelayedStream.java:398）在io.grpc.internal.AbstractStream2 $ TransportState.notifyIfReady（AbstractStream2.java:305）在io.grpc.internal.AbstractStream2 $ TransportState.onStreamAllocated（AbstractStream2.java:248） at io.grpc.netty.NettyClientStream $ TransportState.setHttp2Stream（NettyClientStream.java:227）在io.grpc.netty.NettyClientHandler $ 3.operationComplete（NettyClientHandler.java:429）在io.grpc.netty.NettyClientHandler $ 3.operationComplete（NettyClientHandler.java:417） at io.netty.util.concurrent.DefaultPromise.notifyListener0（DefaultPromise.java:507） at io.netty.util.concurrent.DefaultPromise.notifyListenersNow（DefaultPromise.java:481）在io.netty.util.concurrent.DefaultPromise.notifyListeners（DefaultPromise.java:420）在io.netty.util.concurrent.DefaultPromise.trySuccess（DefaultPromise.java:104）

之后，程序关闭并停止监听并获取消息。如何解决这个中断，我甚至摆脱了具有subscriber.stopAsync（）。

的finally子句

Answer 1

他们提供的代码段中有一个错误。您需要在messaegeIdFuture上调用get（）。以下代码解决了该问题：

Publisher publisher = null;
String projectId = ServiceOptions.getDefaultProjectId();
ProjectTopicName topic = ProjectTopicName.of(projectId, "test");
ApiFuture<String> messageIdFuture = null;
try {
       publisher = Publisher.newBuilder(topic).build();
       ByteString data = ByteString.copyFromUtf8("my-message");
       PubsubMessage pubsubMessage = PubsubMessage.newBuilder().setData(data).build();
       messageIdFuture = publisher.publish(pubsubMessage);
    } catch (IOException e) {
       e.printStackTrace();
    } finally {
        messageIdFuture.get();    //This resolves this issue.
        // Wait on any pending requests
        if (publisher != null) {
            publisher.shutdown();
            //publisher.awaitTermination(1, TimeUnit.SECONDS);
        }
    }

Gcloud PubSub Java实现 - java.util.concurrent.RejectedExecutionException

1 个答案: