Add another PropertyResourceConfigurer programatically with spring-boot - spring

Question

We're setting up an advanced/complex multimodule build with gradle, groovy and spring-boot.
In addition to using #EnableAutoConfiguration to automatically pick up application*.yml files, we would like to register a "custom" PropertyResourceConfigurer to handle common properties placed in a separate "config" module which can be reused across several spring- boot apps.
However, when adding the following in a #Configuration annotated class, startup fails with an exception
#Configuration
class CommonConfig {
#Autowired
Environment env;
#Bean (name = 'geit')
PropertyResourceConfigurer geitProperties() {
PropertyResourceConfigurer configurer = new PropertyPlaceholderConfigurer();
Resource[] resources = new Resource[env.activeProfiles.length];
println "Environment2 : ${env}"
env.activeProfiles.eachWithIndex() {
env, i -> resources[i] = new UrlResource(getURL(String.format("classpath:environment/%s.properties", env)))
}
configurer.setLocations(resources)
return configurer
}
}
the exception is
4fa8a851930816b4d09ecb1/springloaded-1.2.1.RELEASE.jar]
at org.codehaus.groovy.runtime.NullObject.getProperty(NullObject.java:57)
2014-11-04 14:13:56.975 ERROR 48941 --- [ main] o.s.boot.SpringApplication : Application startup failed
at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:168)
at org.codehaus.groovy.runtime.callsite.NullCallSite.getProperty(NullCallSite.java:44)
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'geit' defined in class path resource [geit/config/CommonConfig.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.beans.factory.config.PropertyResourceConfigurer geit.config.CommonConfig.geitProperties()] threw exception; nested exception is java.lang.NullPointerException: Cannot get property 'activeProfiles' on null object
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:227)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:601)
at geit.config.CommonConfig.geitProperties(CommonConfig.groovy:55)
at geit.config.CommonConfig$$EnhancerBySpringCGLIB$$c13414af.CGLIB$geitProperties$21(<generated>)
at geit.config.CommonConfig$$EnhancerBySpringCGLIB$$c13414af$$FastClassBySpringCGLIB$$e7b06e5c.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1113)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:312)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFaat geit.config.CommonConfig$$EnhancerBySpringCGLIB$$c13414af.geitProperties(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
ry.java:1008)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:505)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
... 22 more
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:150)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:606)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:462)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:109)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:692)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:322)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:962)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:951)
at org.springframework.boot.SpringApplication$run.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:120)
at geit.AdminApplication.main(AdminApplication.groovy:19)
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.beans.factory.config.PropertyResourceConfigurer geit.config.CommonConfig.geitProperties()] threw exception; nested exception is java.lang.NullPointerException: Cannot get property 'activeProfiles' on null object
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:188)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:590)
... 21 common frames omitted
Caused by: java.lang.NullPointerException: Cannot get property 'activeProfiles' on null object
at org.codehaus.groovy.runtime.NullObject.getProperty(NullObject.java:57)
at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:168)
at org.codehaus.groovy.runtime.callsite.NullCallSite.getProperty(NullCallSite.java:44)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:227)
at geit.config.CommonConfig.geitProperties(CommonConfig.groovy:55)
at geit.config.CommonConfig$$EnhancerBySpringCGLIB$$c13414af.CGLIB$geitProperties$21(<generated>)
at geit.config.CommonConfig$$EnhancerBySpringCGLIB$$c13414af$$FastClassBySpringCGLIB$$e7b06e5c.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:312)
at geit.config.CommonConfig$$EnhancerBySpringCGLIB$$c13414af.geitProperties(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.iate(SimpleInstantiationStrategy.java:166)
... 22 common frames omitted
However, when adding the following to CommonConfig
#Bean
public String profileConfigBean() {
println "Environment : ${env}"
env.activeProfiles.each {
println it
}
'devprofilebean'
}
this correctly prints all active profiles.
Even adding an empty PropertyResourceConfigurer causes startup to fail

Answer 1

Found a working solution.
I added a class annotated with #PropertySource for each environment pluss one for default properties.
examples:
One for DEV
#Configuration
#Profile(Profiles.DEV)
#PropertySource("classpath:/environment/dev.properties")
class CommonDevConfig {
}
and the one for default
#Configuration
#PropertySource("classpath:/environment/default.properties")
class CommonConfig {
}