We are developing a Spring Boot application which subscribed to a Google pub-sub topic. Below is my code -
pom.xml which has GCP-Spring Boot related dependencies
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-gcp-starter-pubsub</artifactId>
</dependency>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-gcp-dependencies</artifactId>
<version>1.2.5.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
application.yml file
spring:
cloud:
gcp:
project-id: project-dev
credentials:
location: file:C:/Users/project-dev.json
gcp:
pubsub:
subscription: dev-topic-sub
Configuration class to define beans
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.gcp.pubsub.core.PubSubTemplate;
import org.springframework.cloud.gcp.pubsub.integration.AckMode;
import org.springframework.cloud.gcp.pubsub.integration.inbound.PubSubInboundChannelAdapter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.messaging.MessageChannel;
@Configuration
public class GCPPubSubConfig {
@Value("${gcp.pubsub.subscription}")
private String subscriptionId;
@Bean
public PubSubInboundChannelAdapter messageChannelAdapter(
@Qualifier("gcpChannel") MessageChannel inputChannel, PubSubTemplate pubSubTemplate) {
PubSubInboundChannelAdapter adapter = new PubSubInboundChannelAdapter(pubSubTemplate, subscriptionId);
adapter.setOutputChannel(inputChannel);
adapter.setAckMode(AckMode.AUTO);
adapter.setPayloadType(String.class);
return adapter;
}
@Bean
public MessageChannel gcpChannel() {
return new DirectChannel();
}
}
This is my listener class
@Slf4j
@Component
public class GCPPubSubSubscriber {
@ServiceActivator(inputChannel = "gcpChannel")
public void messageReceiver(String payload) {
log.info(payload);
}
}
Where the above code worked fine for me in my local system. I am able to start my application, subscribe to the channel, listen to the messages in my ServiceActivator method and able to print them.
When I deploy them to Azure cloud, able to subscribe to the channel, started the application but while listening to the message, getting the below exception
08:10:42.213 INFO [,,,] 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8085 (http) with context path ''
08:10:42.233 INFO [,,,] 1 --- [ main] .a.e.t.d.t.b.Application : Started Application in 49.345 seconds (JVM running for 52.997)
08:10:43.098 ERROR [,,,] 1 --- [bscriber-SE-1-4] c.g.c.p.v.StreamingSubscriberConnection : terminated streaming with exception
com.google.api.gax.rpc.UnknownException: com.google.api.gax.rpc.UnknownException: io.grpc.StatusRuntimeException: UNKNOWN: Channel Pipeline: [WriteBufferingAndExceptionHandler#0, DefaultChannelPipeline$TailContext#0]
at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:47) ~[gax-1.49.1.jar!/:1.49.1]
at com.google.cloud.pubsub.v1.StreamingSubscriberConnection$1.onFailure(StreamingSubscriberConnection.java:238) ~[google-cloud-pubsub-1.101.0.jar!/:1.101.0]
at com.google.api.core.ApiFutures$1.onFailure(ApiFutures.java:68) [api-common-1.8.1.jar!/:na]
at com.google.common.util.concurrent.Futures$CallbackListener.run(Futures.java:1083) [guava-29.0-jre.jar!/:na]
at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30) [guava-29.0-jre.jar!/:na]
at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1174) [guava-29.0-jre.jar!/:na]
at com.google.common.util.concurrent.AbstractFuture.complete(AbstractFuture.java:969) [guava-29.0-jre.jar!/:na]
at com.google.common.util.concurrent.AbstractFuture.setException(AbstractFuture.java:760) [guava-29.0-jre.jar!/:na]
at com.google.api.core.AbstractApiFuture$InternalSettableFuture.setException(AbstractApiFuture.java:95) [api-common-1.8.1.jar!/:na]
at com.google.api.core.AbstractApiFuture.setException(AbstractApiFuture.java:77) [api-common-1.8.1.jar!/:na]
at com.google.api.core.SettableApiFuture.setException(SettableApiFuture.java:52) [api-common-1.8.1.jar!/:na]
at com.google.cloud.pubsub.v1.StreamingSubscriberConnection$StreamingPullResponseObserver.onError(StreamingSubscriberConnection.java:174) [google-cloud-pubsub-1.101.0.jar!/:1.101.0]
at com.google.api.gax.tracing.TracedResponseObserver.onError(TracedResponseObserver.java:103) [gax-1.49.1.jar!/:1.49.1]
at com.google.api.gax.grpc.ExceptionResponseObserver.onErrorImpl(ExceptionResponseObserver.java:84) [gax-grpc-1.49.1.jar!/:1.49.1]
at com.google.api.gax.rpc.StateCheckingResponseObserver.onError(StateCheckingResponseObserver.java:86) [gax-1.49.1.jar!/:1.49.1]
at com.google.api.gax.grpc.GrpcDirectStreamController$ResponseObserverAdapter.onClose(GrpcDirectStreamController.java:149) [gax-grpc-1.49.1.jar!/:1.49.1]
at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:426) [grpc-core-1.30.2.jar!/:1.30.2]
at io.grpc.internal.ClientCallImpl.access$500(ClientCallImpl.java:66) [grpc-core-1.30.2.jar!/:1.30.2]
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:689) [grpc-core-1.30.2.jar!/:1.30.2]
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$900(ClientCallImpl.java:577) [grpc-core-1.30.2.jar!/:1.30.2]
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal(ClientCallImpl.java:751) [grpc-core-1.30.2.jar!/:1.30.2]
at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:740) [grpc-core-1.30.2.jar!/:1.30.2]
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37) [grpc-core-1.30.2.jar!/:1.30.2]
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123) [grpc-core-1.30.2.jar!/:1.30.2]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_275]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_275]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_275]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_275]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_275]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_275]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_275]
Caused by: com.google.api.gax.rpc.UnknownException: io.grpc.StatusRuntimeException: UNKNOWN: Channel Pipeline: [WriteBufferingAndExceptionHandler#0, DefaultChannelPipeline$TailContext#0]
at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:47) ~[gax-1.49.1.jar!/:1.49.1]
at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:72) ~[gax-grpc-1.49.1.jar!/:1.49.1]
at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:60) ~[gax-grpc-1.49.1.jar!/:1.49.1]
at com.google.api.gax.grpc.ExceptionResponseObserver.onErrorImpl(ExceptionResponseObserver.java:82) [gax-grpc-1.49.1.jar!/:1.49.1]
... 17 common frames omitted
Caused by: io.grpc.StatusRuntimeException: UNKNOWN: Channel Pipeline: [WriteBufferingAndExceptionHandler#0, DefaultChannelPipeline$TailContext#0]
at io.grpc.Status.asRuntimeException(Status.java:533) ~[grpc-api-1.30.2.jar!/:1.30.2]
... 16 common frames omitted
Caused by: io.grpc.netty.shaded.io.netty.channel.ChannelPipelineException: io.grpc.netty.shaded.io.grpc.netty.ProtocolNegotiators$ClientTlsHandler.handlerAdded() has thrown an exception; removed.
at io.grpc.netty.shaded.io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:624) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.DefaultChannelPipeline.replace(DefaultChannelPipeline.java:572) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.DefaultChannelPipeline.replace(DefaultChannelPipeline.java:515) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.grpc.netty.ProtocolNegotiators$ProtocolNegotiationHandler.fireProtocolNegotiationEvent(ProtocolNegotiators.java:767) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.grpc.netty.ProtocolNegotiators$WaitUntilActiveHandler.channelActive(ProtocolNegotiators.java:676) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:230) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:216) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:209) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.DefaultChannelPipeline$HeadContext.channelActive(DefaultChannelPipeline.java:1398) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:230) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:216) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.DefaultChannelPipeline.fireChannelActive(DefaultChannelPipeline.java:895) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.fulfillConnectPromise(AbstractEpollChannel.java:620) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:653) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:529) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:465) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
... 1 common frames omitted
Caused by: java.lang.RuntimeException: ALPN unsupported. Is your classpath configured correctly? For Conscrypt, add the appropriate Conscrypt JAR to classpath and set the security provider. For Jetty-ALPN, see http://www.eclipse.org/jetty/documentation/current/alpn-chapter.html#alpn-starting
at io.grpc.netty.shaded.io.netty.handler.ssl.JdkAlpnApplicationProtocolNegotiator$FailureWrapper.wrapSslEngine(JdkAlpnApplicationProtocolNegotiator.java:122) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.handler.ssl.JdkSslContext.configureAndWrapEngine(JdkSslContext.java:360) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.handler.ssl.JdkSslContext.newEngine(JdkSslContext.java:335) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.grpc.netty.ProtocolNegotiators$ClientTlsHandler.handlerAdded0(ProtocolNegotiators.java:348) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.grpc.netty.ProtocolNegotiators$ProtocolNegotiationHandler.handlerAdded(ProtocolNegotiators.java:726) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.AbstractChannelHandlerContext.callHandlerAdded(AbstractChannelHandlerContext.java:971) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
at io.grpc.netty.shaded.io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:609) ~[grpc-netty-shaded-1.30.2.jar!/:1.30.2]
... 20 common frames omitted
As per the exception I suspected that there might be an issue with Java version hence checked the details
Java version details in my local system -
Desktop>java -version
openjdk version "1.8.0_265"
OpenJDK Runtime Environment (build 1.8.0_265-b01)
OpenJDK 64-Bit Server VM (build 25.265-b01, mixed mode)
Java version details in Azure -
/home/aksuser $ java -version
openjdk version "1.8.0_275"
OpenJDK Runtime Environment (IcedTea 3.17.1) (Alpine 8.275.01-r0)
OpenJDK 64-Bit Server VM (build 25.275-b01, mixed mode)
/home/aksuser $
Is there any chance that the issue is with the Java version? as it is working fine in local but not in Azure. Why ALPN comes into picture when working with GCP? If the issue is with Java version that doesn't support ALPN then what are the possibilities to resolve the error?
Ideally the ALPN supported Java version need to be installed to make this work. As you have deployed your application in a container based environment please try customizing your application alone with the ALPN supported JDK image so that the other applications in the environment is not interrupted.
you can check if your java version is GCP compatible or not from this link -