Exception thrown when publishing an event using DaprClient from Java SDK of Dapr

In what area(s)?

I am using io.dapr.client.DaprClient -> publishEvent(String var1, Object var2):

com.fasterxml.jackson.databind.ObjectMapper om = ObjectMapper();
...
try {
            publisher.publishEvent(
                    "core.adapters.delete",
                    om.writeValueAsBytes(bc)).doOnError(
                        throwable -> LOG.error(throwable.getMessage(), throwable))
                        .subscribe(
                                value -> LOG.trace("Subscribed to published event: {}", value),
                                err -> LOG.error(err.getMessage(), err),
                                () -> LOG.trace("Publishing completed")
                        );
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }

I tried the code yesterday with a topic that already exists. Yesterday it was successful. Tried it today with a new topic, then the exception occurred. Then tried again the old topic, also in this case the exception occurs. There comes no exception at startup. When I call the above code to publish an event, the exception occurrs.

/area runtime Windows Java JDK 12.0.2 No company proxy involved. On local machine

What version of Dapr?

dapr java sdk 0.3.0

Expected Behavior

Events can be published without exception

Actual Behavior

When an event is published, I get following exception: 2020/03/25T16:03:55.697 core [http-nio-8081-exec-2] ERROR c.b.r.s.r.a.s.BundlesServiceImplementation.lambda$publishAdapterEvent$3(486) - io.grpc.StatusRuntimeException: UNAVAILABLE: io exception [161818, , Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36] java.util.concurrent.ExecutionException: io.grpc.StatusRuntimeException: UNAVAILABLE: io exception at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:552) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:533) at io.dapr.client.DaprClientGrpc.lambda$publishEvent$0(DaprClientGrpc.java:91) at reactor.core.publisher.MonoCallable.subscribe(MonoCallable.java:56) at reactor.core.publisher.Mono.subscribe(Mono.java:4087) at reactor.core.publisher.Mono.subscribeWith(Mono.java:4193) at reactor.core.publisher.Mono.subscribe(Mono.java:4059) at reactor.core.publisher.Mono.subscribe(Mono.java:3995) at com.bosch.riot.server.ServiceImpl.publishAdapterEvent(ServiceImpl.java:487) at com.bosch.riot.server.Controller$$FastClassBySpringCGLIB$$de67ea92.invoke(<generated>) … at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:835) Caused by: io.grpc.StatusRuntimeException: UNAVAILABLE: io exception at io.grpc.Status.asRuntimeException(Status.java:533) at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:495) at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39) at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23) at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40) at io.grpc.internal.CensusStatsModule$StatsClientInterceptor$1$1.onClose(CensusStatsModule.java:700) at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39) at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23) at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40) at io.grpc.internal.CensusTracingModule$TracingClientInterceptor$1$1.onClose(CensusTracingModule.java:399) at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:510) at io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:66) at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:630) at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$700(ClientCallImpl.java:518) at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal(ClientCallImpl.java:692) at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:681) at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37) at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) … 1 common frames omitted Caused by: io.grpc.netty.shaded.io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: /127.0.0.1:50051 Caused by: java.net.ConnectException: Connection refused: no further information at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:779) at io.grpc.netty.shaded.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327) at io.grpc.netty.shaded.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334) at io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:688) at io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:635) at io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:552) at io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:514) at io.grpc.netty.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1044) at io.grpc.netty.shaded.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.grpc.netty.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.base/java.lang.Thread.run(Thread.java:835)

Steps to Reproduce the Problem

• local components folder contains a pubsub.yaml file with following config:

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: messagebus
spec:
  type: pubsub.azure.servicebus
  metadata:
    - name: connectionString
      value: "Endpoint=sb://riot...-> from azure portal primary connection string"

Started first the normal java application (that has no subscription endpoints). Then the Dapr side car. When I call then the exposed REST API from the java application an event should be published. Yesterday with the known topic this worked. Today I had to use a new topic, then the exception occurred.

[artursouza]

That explains it. We are fixing that today.

[pagufler]

Hi @artursouza,

seams that yesterday my head was not really working… Mistakenly took a connection string that was already taken by someone else. Then we get this error msg. Would be good to have a hint, that a connection string is used twice.

This bug can therefore be closed