Hello! :wave: I’m hitting a problem with condition...

# spring

[Dariusz Kuc]

Hello! 👋
I’m hitting a problem with conditional bean creation order - I’m writing custom bean registrar to generate and register some beans based on the configuration properties and I provide some default beans as a fallback. Basically
• I got an annotation for explicit opt-in where I import my registrar and fallback config
• registrar is environment aware so it can bind my properties and uses factory bean to create target beans (e.g. BeanDefinitionBuilder.genericBeanDefinition(MyFactoryBean::class.java)
• MyFactoryBean is application context aware and it attempts to retrieve FallbackBean from context (e.g. using applicationContext.getBean(FallbackBean::class.java)
• within a @SpringBootTest I’m explicitly creating SomeBean in a configuration class
So my problem is that conditional logic (i.e. @ConditionalOnBean ) is evaluated BEFORE attempting to create the SomeBean in test configuration…. Sample code in the thread. Any ideas what I might be missing?

[Dariusz Kuc]

@Retention(AnnotationRetention.RUNTIME)
@Target(AnnotationTarget.CLASS)
@Import(MyBeanRegistrar::class, MyFallbackConfiguration::class)
@EnableConfigurationProperties(MyProperties::class)
annotation class EnableMyAutoConfiguration

@ConditionalOnBean(SomeBean::class)
@Configuration
class MyFallbackConfiguration {

    @Bean
    @ConditionalOnMissingBean
    fun fallbackBean(someBean: SomeBean): FallbackBean = DefaultFallbackBean(someBean)
}

@SpringBootTest(classes = [MyConfigurationIT.MyTestConfiguration::class])
class MyConfigurationIT {

    @Configuration
    @EnableAutoConfiguration
    @EnableMyAutoConfiguration
    class MyTestConfiguration {

        @Bean
        fun someBean(): SomeBean = SomeBean()   // <== this gets created AFTER conditional evaluation
    }

    @Test
    fun `context loads`() {
    }
}

[Dariusz Kuc]

if anyone is looking for the similar problem -> I solved the issue by making MyFallbackConfiguration a spring auto configuration (i.e. configuring it in META-INF/spring.factories and removing the explicit import from the annotation)