BeanCreationException when putting the jar into the classpath (but not adding an annotation)

[Paŭlo Ebermann]

Wrong behavior
When just putting the jar into the classpath (e.g. by adding a maven dependency), but not adding the @EnableNakadiProducer annotation, a spring-boot app will fail during the startup.

Error message:

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springSecurityFilterChain' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'endpointHandlerMapping' defined in class path resource [org/springframework/boot/actuate/autoconfigure/EndpointWebMvcManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.mvc.EndpointHandlerMapping]: Factory method 'endpointHandlerMapping' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcEndpoints' defined in class path resource [org/springframework/boot/actuate/autoconfigure/EndpointWebMvcManagementContextConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'snapshotEventCreationMvcEndpoint' defined in class path resource [org/zalando/nakadiproducer/NakadiProducerAutoConfiguration$ManagementEndpointConfiguration.class]: Unsatisfied dependency expressed through method 'snapshotEventCreationMvcEndpoint' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'snapshotEventCreationEndpoint' defined in class path resource [org/zalando/nakadiproducer/NakadiProducerAutoConfiguration$ManagementEndpointConfiguration.class]: Unsatisfied dependency expressed through method 'snapshotEventCreationEndpoint' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.zalando.nakadiproducer.snapshots.impl.SnapshotCreationService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 0 of method snapshotEventCreationEndpoint in
 org.zalando.nakadiproducer.NakadiProducerAutoConfiguration$ManagementEndpointConfiguration
 required a bean of type 'org.zalando.nakadiproducer.snapshots.impl.SnapshotCreationService' that
 could not be found.


Action:

Consider defining a bean of type 'org.zalando.nakadiproducer.snapshots.impl.SnapshotCreationService'
 in your configuration.

Analysis

The main thing NakadiProducerAutoConfiguration is only activated when the @EnableNakadiProducer annotation is used. But it looks like the inner class ManagementEndpointConfiguration (which is annotated with @ManagementContextConfiguration) is used anyways (maybe just in some circumstances), and this fails because the SnapshotCreationService bean is then missing.

This might be related to the spring.factories file which mentions it.

[Paŭlo Ebermann]

If my analysis above is correct, this should now be solved in the 20.0.0 release for spring-boot 2 (because that is not using the @ManagementContextConfiguration anymore).

It is still open in the 4.x release series.