太多消息被发送到了Cloud PubSub主题中 [Spring Boot]

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英文:

Too many messages are sent to the topic in Cloud PubSub [Spring Boot]

问题

我正在使用GCP和Cloud PubSub开发一个聊天服务器。

我想要从一个使用Spring Integration的实例向Cloud PubSub中的主题发送消息,但它发送了太多消息。

这是实例的代码。

创建一个入站通道适配器以侦听订阅chat-sub并将消息发送到输入消息通道。

@Bean
fun inboundChannelAdapter(
    @Qualifier("inputMessageChannel") messageChannel: MessageChannel?,
    pubSubTemplate: PubSubTemplate?
): PubSubInboundChannelAdapter? {
    val adapter = PubSubInboundChannelAdapter(pubSubTemplate, "chat-sub")
    adapter.outputChannel = messageChannel
    adapter.ackMode = AckMode.AUTO
    adapter.payloadType = String::class.java
    return adapter
}

定义消息到达消息通道时发生的操作。

@ServiceActivator(inputChannel = "inputMessageChannel")
fun messageReceiver(
    payload: String,
    @Header(GcpPubSubHeaders.ORIGINAL_MESSAGE) message: BasicAcknowledgeablePubsubMessage
) {
    val model = gson.fromJson(payload, ChatMessageToPubSub::class.java)
    
    messagingTemplate.convertAndSend("/sub/message/" + model.roomId.toString(), ChatMessageToClient(model.userId, model.message))
    message.ack()
}

创建一个出站通道适配器,将输入消息通道中的消息发送到主题chat

@Bean
@ServiceActivator(inputChannel = "inputMessageChannel")
fun messageSender(pubsubTemplate: PubSubTemplate?): MessageHandler? {
    val adapter = PubSubMessageHandler(pubsubTemplate, "chat")
    adapter.setSuccessCallback { ackId, message -> println("send success : " + message.payload) }
    adapter.setFailureCallback { cause, message -> println("send fail : " + message.payload) }
    return adapter
}

MessagingGateway接口用于向Pubsub发送消息。

@MessagingGateway(defaultRequestChannel = "inputMessageChannel")
interface PubSubOutBoundGateway {
    @Throws(MessagingException::class)
    fun sendToPubsub(text: String)
}

当我关闭实例时,我在客户端收到了大约200条消息。

第一个错误是:

org.springframework.messaging.MessageHandlingException: Missing header 'gcp_pubsub_original_message' for method parameter type [interface com.google.cloud.spring.pubsub.support.BasicAcknowledgeablePubsubMessage]

我认为这是消息重发的关键,所以我尝试添加了GcpPubSubHeaders.ORIGINAL_MESSAGE头。但我找不到实现BasicAcknowledgeablePubsubMessage的类来生成对象。

我现在漏掉了什么?

或者是否有停止重试的方法当发生异常时?

英文:

I'm using GCP and Cloud PubSub to develop a chatting server now.

I wanted to send a message to the topic in Cloud PubSub from an instance using Spring Integration, but it sent too many messages.

DEFAULT 2023-06-14T18:53:50.785528Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:50.785542Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
ERROR 2023-06-14T18:53:51.690026Z org.springframework.messaging.MessageHandlingException: Missing header 'gcp_pubsub_original_message' for method parameter type [interface com.google.cloud.spring.pubsub.support.BasicAcknowledgeablePubsubMessage], failedMessage=GenericMessage [payload={"roomId":1,"userId":1,"message":"zxcv"}, headers={replyChannel=nullChannel, errorChannel=, id=8e1e8628-36cf-ebd5-bd36-925668f6644c, timestamp=1686768830200}] at org.springframework.messaging.handler.annotation.support.HeaderMethodArgumentResolver.handleMissingValue(HeaderMethodArgumentResolver.java:111) at org.springframework.messaging.handler.annotation.support.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:108) at org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:118) at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:147) at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:115) at org.springframework.integration.handler.support.MessagingMethodInvokerHelper$HandlerMethod.invoke(MessagingMethodInvokerHelper.java:1075) at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.invokeHandlerMethod(MessagingMethodInvokerHelper.java:558) at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.processInternal(MessagingMethodInvokerHelper.java:476) at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.process(MessagingMethodInvokerHelper.java:354) at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:114) at org.springframework.integration.handler.ServiceActivatingHandler.handleRequestMessage(ServiceActivatingHandler.java:95) at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:136) at org.springframework.integration.handler.AbstractMessageHandler.doHandleMessage(AbstractMessageHandler.java:105) at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:73) at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:222) at org.springframework.integration.dispatcher.BroadcastingDispatcher.…
DEFAULT 2023-06-14T18:53:52.215535Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.215551Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.355030Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.355046Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.516490Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.516506Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.662022Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.662037Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.789312Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.789327Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.991170Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:52.991186Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.115730Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.115747Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.241358Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.241373Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.358250Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.358270Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.504470Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.504486Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.637282Z 2023-06-15T03:53:53.631+09:00 WARN 1 --- [bscriber-SE-1-0] c.g.c.p.v.StreamingSubscriberConnection : failed to send operations
ERROR 2023-06-14T18:53:53.637335Z com.google.api.gax.rpc.InvalidArgumentException: io.grpc.StatusRuntimeException: INVALID_ARGUMENT: Some acknowledgement ids in the request were invalid. This could be because the acknowledgement ids have expired or the acknowledgement ids were malformed. at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:92) ~[gax-2.23.3.jar!/:2.23.3] at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:98) ~[gax-grpc-2.23.3.jar!/:2.23.3] at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:66) ~[gax-grpc-2.23.3.jar!/:2.23.3] at com.google.api.gax.grpc.GrpcExceptionCallable$ExceptionTransformingFuture.onFailure(GrpcExceptionCallable.java:97) ~[gax-grpc-2.23.3.jar!/:2.23.3] at com.google.api.core.ApiFutures$1.onFailure(ApiFutures.java:67) ~[api-common-2.6.3.jar!/:2.6.3] at com.google.common.util.concurrent.Futures$CallbackListener.run(Futures.java:1132) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:31) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1270) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.AbstractFuture.complete(AbstractFuture.java:1038) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.AbstractFuture.setException(AbstractFuture.java:808) ~[guava-31.1-jre.jar!/:na] at io.grpc.stub.ClientCalls$GrpcFuture.setException(ClientCalls.java:574) ~[grpc-stub-1.53.0.jar!/:1.53.0] at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:544) ~[grpc-stub-1.53.0.jar!/:1.53.0] at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39) ~[grpc-api-1.53.0.jar!/:1.53.0] at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23) ~[grpc-api-1.53.0.jar!/:1.53.0] at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40) ~[grpc-api-1.53.0.jar!/:1.53.0] at com.google.api.gax.grpc.ChannelPool$ReleasingClientCall$1.onClose(ChannelPool.java:541) ~[gax-grpc-2.23.3.jar!/:2.23.3] at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:576) ~[grpc-core-1.53.0.jar!/:1.53.0] at io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:70) ~[grpc-core-1.53.0.jar!/:1.53.0] at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal…
DEFAULT 2023-06-14T18:53:53.637519Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.637531Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.649037Z 2023-06-15T03:53:53.648+09:00 INFO 1 --- [bscriber-SE-1-0] c.g.c.p.v.StreamingSubscriberConnection : Permanent error invalid ack id message, will not resend
DEFAULT 2023-06-14T18:53:53.786696Z 2023-06-15T03:53:53.784+09:00 WARN 1 --- [bscriber-SE-1-1] c.g.c.p.v.StreamingSubscriberConnection : failed to send operations
ERROR 2023-06-14T18:53:53.786742Z com.google.api.gax.rpc.InvalidArgumentException: io.grpc.StatusRuntimeException: INVALID_ARGUMENT: Some acknowledgement ids in the request were invalid. This could be because the acknowledgement ids have expired or the acknowledgement ids were malformed. at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:92) ~[gax-2.23.3.jar!/:2.23.3] at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:98) ~[gax-grpc-2.23.3.jar!/:2.23.3] at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:66) ~[gax-grpc-2.23.3.jar!/:2.23.3] at com.google.api.gax.grpc.GrpcExceptionCallable$ExceptionTransformingFuture.onFailure(GrpcExceptionCallable.java:97) ~[gax-grpc-2.23.3.jar!/:2.23.3] at com.google.api.core.ApiFutures$1.onFailure(ApiFutures.java:67) ~[api-common-2.6.3.jar!/:2.6.3] at com.google.common.util.concurrent.Futures$CallbackListener.run(Futures.java:1132) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:31) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1270) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.AbstractFuture.complete(AbstractFuture.java:1038) ~[guava-31.1-jre.jar!/:na] at com.google.common.util.concurrent.AbstractFuture.setException(AbstractFuture.java:808) ~[guava-31.1-jre.jar!/:na] at io.grpc.stub.ClientCalls$GrpcFuture.setException(ClientCalls.java:574) ~[grpc-stub-1.53.0.jar!/:1.53.0] at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:544) ~[grpc-stub-1.53.0.jar!/:1.53.0] at io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39) ~[grpc-api-1.53.0.jar!/:1.53.0] at io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23) ~[grpc-api-1.53.0.jar!/:1.53.0] at io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40) ~[grpc-api-1.53.0.jar!/:1.53.0] at com.google.api.gax.grpc.ChannelPool$ReleasingClientCall$1.onClose(ChannelPool.java:541) ~[gax-grpc-2.23.3.jar!/:2.23.3] at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:576) ~[grpc-core-1.53.0.jar!/:1.53.0] at io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:70) ~[grpc-core-1.53.0.jar!/:1.53.0] at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal…
DEFAULT 2023-06-14T18:53:53.786965Z 2023-06-15T03:53:53.786+09:00 INFO 1 --- [bscriber-SE-1-1] c.g.c.p.v.StreamingSubscriberConnection : Permanent error invalid ack id message, will not resend
DEFAULT 2023-06-14T18:53:53.827465Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.827481Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.973948Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:53.973962Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:54.116426Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:54.116443Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:54.237137Z send success : {"roomId":1,"userId":1,"message":"zxcv"}
DEFAULT 2023-06-14T18:53:54.237158Z send fail : {"roomId":1,"userId":1,"message":"zxcv"}

This is the code of the instance.

    // Create an inbound channel adapter to listen to the subscription `chat-sub` and send
// messages to the input message channel.
@Bean
fun inboundChannelAdapter(
@Qualifier("inputMessageChannel") messageChannel: MessageChannel?,
pubSubTemplate: PubSubTemplate?
): PubSubInboundChannelAdapter? {
val adapter = PubSubInboundChannelAdapter(pubSubTemplate, "chat-sub")
adapter.outputChannel = messageChannel
adapter.ackMode = AckMode.AUTO
adapter.payloadType = String::class.java
return adapter
}
// Define what happens to the messages arriving in the message channel.
@ServiceActivator(inputChannel = "inputMessageChannel")
fun messageReceiver(
payload: String,
@Header(GcpPubSubHeaders.ORIGINAL_MESSAGE) message: BasicAcknowledgeablePubsubMessage
) {
val model = gson.fromJson(payload, ChatMessageToPubSub::class.java)
messagingTemplate.convertAndSend("/sub/message/" + model.roomId.toString(), ChatMessageToClient(model.userId, model.message))
message.ack()
//LOGGER.info("Message arrived via an inbound channel adapter from chat-sub! Payload: $payload")
}
// Create an outbound channel adapter to send messages from the input message channel to the
// topic `chat`.
@Bean
@ServiceActivator(inputChannel = "inputMessageChannel")
fun messageSender(pubsubTemplate: PubSubTemplate?): MessageHandler? {
val adapter = PubSubMessageHandler(pubsubTemplate, "chat")
adapter.setSuccessCallback { ackId, message -> println("send success : " + message.payload) }
adapter.setFailureCallback { cause, message -> println("send fail : " + message.payload) }
return adapter
}
@MessagingGateway(defaultRequestChannel = "inputMessageChannel")
interface PubSubOutBoundGateway {
@kotlin.jvm.Throws(MessagingException::class)
fun sendToPubsub(text : String)
}

So I received about 200 messages at my client side by shutting down the instance.

The first error is

org.springframework.messaging.MessageHandlingException: Missing header 'gcp_pubsub_original_message' for method parameter type [interface com.google.cloud.spring.pubsub.support.BasicAcknowledgeablePubsubMessage]

I thought it is the key of the message resending, so I tried to add GcpPubSubHeaders.ORIGINAL_MESSAGE header.
But I could not find the class that implements BasicAcknowledgeablePubsubMessage to generate the object.

What am I missing now?

Or is there any way stopping retrying when exception occurs?

答案1

得分: 1

这是翻译后的部分:

"因为发送到主题的消息会返回到 inputMessageChannel,所以 messageSender 适配器再次工作。

因此,我将入站通道和出站通道分开,所以代码看起来像这样。

@Bean
fun inputMessageChannel(): MessageChannel? {
    return PublishSubscribeChannel()
}

@Bean
fun outputMessageChannel(): MessageChannel? {
    return PublishSubscribeChannel()
}

// 创建入站通道适配器以侦听订阅 `chat-sub` 并将消息发送到输入消息通道。
@Bean
fun inboundChannelAdapter(
    @Qualifier("inputMessageChannel") messageChannel: MessageChannel?,
    pubSubTemplate: PubSubTemplate?
): PubSubInboundChannelAdapter? {
    val adapter = PubSubInboundChannelAdapter(pubSubTemplate, "chat-sub")
    adapter.outputChannel = messageChannel
    adapter.ackMode = AckMode.MANUAL
    adapter.payloadType = String::class.java
    return adapter
}

// 定义消息到达消息通道时发生的操作。
@ServiceActivator(inputChannel = "inputMessageChannel")
fun messageReceiver(
    payload: String,
    @Header(GcpPubSubHeaders.ORIGINAL_MESSAGE) message: BasicAcknowledgeablePubsubMessage
) {
    val model = gson.fromJson(payload, ChatMessageToPubSub::class.java)
    println("received message : " + message.pubsubMessage.data.toStringUtf8())
    println(message.pubsubMessage.attributesMap)
    message.ack()
    messagingTemplate.convertAndSend("/sub/message/" + model.roomId.toString(), ChatMessageToClient(model.userId, model.message))
    //LOGGER.info("Message arrived via an inbound channel adapter from chat-sub! Payload: $payload")
}

// 创建出站通道适配器,将消息从输入消息通道发送到主题 `chat`。
@Bean
@ServiceActivator(inputChannel = "outputMessageChannel")
fun messageSender(pubsubTemplate: PubSubTemplate?): MessageHandler? {
    val adapter = PubSubMessageHandler(pubsubTemplate, "chat")
    adapter.setSuccessCallback { ackId, message -> println("send success : " + ackId + " - " + message.payload) }
    adapter.setFailureCallback { cause, message -> println("send fail : " + cause.stackTraceToString() + " - " + message.payload) }
    adapter.setPublishTimeoutExpressionString("500")
    return adapter
}
@MessagingGateway(defaultRequestTimeout = "500", defaultRequestChannel = "outputMessageChannel", errorChannel = "errorChannel")
interface PubSubOutBoundGateway {
    @kotlin.jvm.Throws(MessagingException::class, MessageHandlingException::class)
    fun sendToPubsub(text: String)
}

然后它就能正常工作。"

英文:

It is because the message sent to the topic goes back to inputMessageChannel, so messageSender adapter works again.

So I separate inbound channel and outbound channel, so the code looks like this.

    @Bean
fun inputMessageChannel(): MessageChannel? {
return PublishSubscribeChannel()
}
@Bean
fun outputMessageChannel(): MessageChannel? {
return PublishSubscribeChannel()
}
// Create an inbound channel adapter to listen to the subscription `chat-sub` and send
// messages to the input message channel.
@Bean
fun inboundChannelAdapter(
@Qualifier("inputMessageChannel") messageChannel: MessageChannel?,
pubSubTemplate: PubSubTemplate?
): PubSubInboundChannelAdapter? {
val adapter = PubSubInboundChannelAdapter(pubSubTemplate, "chat-sub")
adapter.outputChannel = messageChannel
adapter.ackMode = AckMode.MANUAL
adapter.payloadType = String::class.java
return adapter
}
// Define what happens to the messages arriving in the message channel.
@ServiceActivator(inputChannel = "inputMessageChannel")
fun messageReceiver(
payload: String,
@Header(GcpPubSubHeaders.ORIGINAL_MESSAGE) message: BasicAcknowledgeablePubsubMessage
) {
val model = gson.fromJson(payload, ChatMessageToPubSub::class.java)
println("received message : " + message.pubsubMessage.data.toStringUtf8())
println(message.pubsubMessage.attributesMap)
message.ack()
messagingTemplate.convertAndSend("/sub/message/" + model.roomId.toString(), ChatMessageToClient(model.userId, model.message))
//LOGGER.info("Message arrived via an inbound channel adapter from chat-sub! Payload: $payload")
}
// Create an outbound channel adapter to send messages from the input message channel to the
// topic `chat`.
@Bean
@ServiceActivator(inputChannel = "outputMessageChannel")
fun messageSender(pubsubTemplate: PubSubTemplate?): MessageHandler? {
val adapter = PubSubMessageHandler(pubsubTemplate, "chat")
adapter.setSuccessCallback { ackId, message -> println("send success : " + ackId + " - " + message.payload) }
adapter.setFailureCallback { cause, message -> println("send fail : " + cause.stackTraceToString() + " - " + message.payload) }
adapter.setPublishTimeoutExpressionString("500")
return adapter
}
@MessagingGateway(defaultRequestTimeout = "500", defaultRequestChannel = "outputMessageChannel", errorChannel = "errorChannel")
interface PubSubOutBoundGateway {
@kotlin.jvm.Throws(MessagingException::class, MessageHandlingException::class)
fun sendToPubsub(text : String)
}

Then it works.

huangapple
  • 本文由 发表于 2023年6月19日 20:46:01
  • 转载请务必保留本文链接:https://go.coder-hub.com/76506765.html
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