Closed
Description
Affects Version(s): 5.1.3
Bug report
It is possible to start a flow from an interface class with IntegrationFlows.from(Class).
That interface must not be annotated with @MessagingGateway. However, if I use it that way, the errorChannel becomes the default "", which leads to problems with error handling subsequently in org.springframework.integration.channel.MessagePublishingErrorHandler#resolveErrorChannel.
If I do annotate the interface with @MessagingGateway and supply an error channel, it also wants me to define a request channel, which defeats the purpose of IntegrationFlows.from(Class).
I should note that my interface has a single void method.
Exception in thread "pool-1-thread-1" org.springframework.messaging.core.DestinationResolutionException: failed to look up MessageChannel with name '' in the BeanFactory.; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named '' available
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:117)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:46)
at org.springframework.integration.channel.MessagePublishingErrorHandler.resolveErrorChannel(MessagePublishingErrorHandler.java:144)
at org.springframework.integration.channel.MessagePublishingErrorHandler.handleError(MessagePublishingErrorHandler.java:91)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.lambda$execute$0(ErrorHandlingTaskExecutor.java:60)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named '' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:775)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1221)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:273)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:89)
... 7 more
Expected: the errorChannel should be undefined or set to a sensible default value, not to an empty string.