Spring 集成 - 停止入站适配器 - 观察到异常

Question

使用 Spring 集成 SFTP 功能和入站通道适配器，下载远程文件进行处理。

虽然我使用以下启动和停止例程来启动/停止入站通道适配器。

    public void startInboundAdapter() throws ApplicationException {
        SourcePollingChannelAdapter streamInboundAdapter = appContext.getBean("streamInboundAdapter", SourcePollingChannelAdapter.class);
        streamInboundAdapter.start();
    }

    public void stopInboundAdapter() throws ApplicationException {
        SourcePollingChannelAdapter streamInboundAdapter = appContext.getBean("streamInboundAdapter", SourcePollingChannelAdapter.class);
        streamInboundAdapter.stop();
    }

但是我观察到在所有文件处理完成后调用停止入站适配器后出现异常。 我被困在这里并寻找解决方案，请提出建议。

堆栈跟踪

2020-08-15 15:44:24.298  INFO 9976 --- [   scheduling-1] o.s.i.e.SourcePollingChannelAdapter      : stopped bean 'streamInboundAdapter'
2020-08-15 15:44:24.298 ERROR 9976 --- [   scheduling-1] o.s.integration.handler.LoggingHandler   : org.springframework.messaging.MessageHandlingException: error occurred in message handler [bean 'aggregatorFactoryBean'; defined in: 'class path resource [com/config/SFTPConfig.class]'; from source: 'org.springframework.core.type.classreading.SimpleMethodMetadata@40dd3977']; nested exception is org.springframework.messaging.MessagingException: Interrupted while obtaining lock; nested exception is java.lang.InterruptedException, failedMessage=GenericMessage [payload=sftp-inbound\upload_file.csv.bburpt.xls, headers={file_remoteHostPort=sftp.bloomberg.com:22, file_name=upload_file.csv.bburpt.xls, file_remoteDirectory=//report, file_originalFile=sftp-inbound\upload_file.csv.bburpt.xls, id=615015fe-b403-d247-c86e-f026a6ab3ad2, file_relativePath=upload_file.csv.bburpt.xls, file_remoteFile=upload_file.csv.bburpt.xls, timestamp=1597520532363}]
    at org.springframework.integration.support.utils.IntegrationUtils.wrapInHandlingExceptionIfNecessary(IntegrationUtils.java:191)
    at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:187)
    at org.springframework.integration.handler.ReplyProducingMessageHandlerWrapper.handleRequestMessage(ReplyProducingMessageHandlerWrapper.java:49)
    at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:127)
    at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:170)
    at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:115)
    at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:133)
    at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:106)
    at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:73)
    at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:453)
    at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:403)
    at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:187)
    at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:166)
    at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47)
    at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:109)
    at org.springframework.integration.endpoint.SourcePollingChannelAdapter.handleMessage(SourcePollingChannelAdapter.java:234)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.messageReceived(AbstractPollingEndpoint.java:396)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:380)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.pollForMessage(AbstractPollingEndpoint.java:328)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$null$1(AbstractPollingEndpoint.java:275)
    at org.springframework.integration.util.ErrorHandlingTaskExecutor.lambda$execute$0(ErrorHandlingTaskExecutor.java:57)
    at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
    at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:55)
    at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$createPoller$2(AbstractPollingEndpoint.java:272)
    at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
    at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
    at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java)
    at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.springframework.messaging.MessagingException: Interrupted while obtaining lock; nested exception is java.lang.InterruptedException
    at org.springframework.integration.store.SimpleMessageStore.completeGroup(SimpleMessageStore.java:426)
    at org.springframework.integration.aggregator.AggregatingMessageHandler.afterRelease(AggregatingMessageHandler.java:80)
    at org.springframework.integration.aggregator.AbstractCorrelatingMessageHandler.processMessageForGroup(AbstractCorrelatingMessageHandler.java:503)
    at org.springframework.integration.aggregator.AbstractCorrelatingMessageHandler.handleMessageInternal(AbstractCorrelatingMe ssageHandler.java:471)
    at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:170)
    ... 31 more
Caused by: java.lang.InterruptedException
    at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1261)
    at java.base/java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:317)
    at org.springframework.integration.store.SimpleMessageStore.completeGroup(SimpleMessageStore.java:412)
    ... 35 more

Answer 1

停止是立即的，如果您有一个可中断的进程中任务，它将被中断。

请在 GitHub 上添加新功能建议问题。

我们应该实现Pausable允许您等到它暂停后再停止，或者为停止添加“有序”选项。