Rest Application Integration

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Mohammed Yousuff

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Jul 10, 2013, 9:29:19 AM7/10/13
to togglz...@googlegroups.com
Hi All,

In our projects, we had thought to move towards feature based development. When I was searching related feature based development, I can come to know toggles framework which what we are looking for ..

For the last few weeks I have been trying harder to implement this in our code base.. Below is the code we have written and I am not sure how to proceed further. 

Can you please help us here ?....

Server : apache-tomcat-5.5.35-service
JDK : 1.6
Application Type : Rest (not a Web -Application)





public enum MyFeatures implements Feature {

    @EnabledByDefault
    @Label("First Feature")
    THREAD_LINK,
    
    @Label("Second Feature")
    JOBS;
    
    public boolean isActive() {
    System.out.println("active");
        return FeatureContext.getFeatureManager().isActive(this);
    }
    
}


Spring Config :

<bean id="userProvider" class="org.togglz.core.user.NoOpUserProvider" />
 
 <bean id="stateRepository" class="org.togglz.core.repository.mem.InMemoryStateRepository" />
 
 <bean id="featureManager" class="org.togglz.spring.manager.FeatureManagerFactory">
   <property name="featureEnum" value="com.xxx.common.togglz.MyFeatures" /> 
   <property name="stateRepository" ref="stateRepository" />
   <property name="userProvider" ref="userProvider" />
 </bean>


Lib:

\togglz-console-2.0.0.RC1.jar
\togglz-core-2.0.0.RC1.jar
\togglz-servlet-2.0.0.RC1.jar
\togglz-spring-2.0.0.RC1.jar




Caller Code :

MyFeatures.THREAD_LINK.isActive() 


When above code gets executed it throws following exception...



org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'featureManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.reflect.MalformedParameterizedTypeException

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:480)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)




Christian Kaltepoth

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Jul 10, 2013, 10:56:03 AM7/10/13
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Hey,

could you post the full stacktrace including all "caused by" exceptions?

Christian


2013/7/10 Mohammed Yousuff <java...@gmail.com>



--
Christian Kaltepoth

Christian Kaltepoth

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Jul 10, 2013, 1:18:53 PM7/10/13
to togglz...@googlegroups.com
This looks weird:

.... nested exception is java.lang.reflect.MalformedParameterizedTypeException

I would be interested to see the details of this nested exception.

Christian



2013/7/10 Christian Kaltepoth <chri...@kaltepoth.de>

Christian Kaltepoth

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Jul 11, 2013, 6:46:58 AM7/11/13
to togglz...@googlegroups.com, Mohammed Yousuff
Hmmmm, that's weird. Which Spring version are you using?

My only guess is that the exception is caused by this line here:


You could try to copy this class into your project and modify it by replacing the marked line with:

  public void setFeatureEnum(Class<Feature> featureEnum) {

Or perhaps even:

  public void setFeatureEnum(Class<MyFeatures> featureEnum) {

And then of cause use your own version of the factory in the configuration:

   <bean id="featureManager" class="com.xxx.common.togglz.MyFeatureManagerFactory">
    ...
   </bean>

This will eliminate the wildcard in the generic type. So perhaps this will fix this problem.

This is really weird, because I've created an integration test that tests this and it works fine there:


I'm using Spring 3.0.7.RELEASE in the integration tests.

Christian



2013/7/11 Mohammed Yousuff <java...@gmail.com>
Here you go:


2013-07-10 18:18:01,974 WARN  main [support.DisposableBeanAdapter] - Invocation of destroy method 'shutdown' failed on bean with name 'cxf': org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name 'dataSource': Singleton bean creation not allowed while the singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)
2013-07-10 18:18:01,976 ERROR main [context.ContextLoader] - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'featureManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.reflect.MalformedParameterizedTypeException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:480)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3795)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4252)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:884)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:737)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1203)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.reflect.MalformedParameterizedTypeException
at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.validateConstructorArguments(ParameterizedTypeImpl.java:42)
at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.<init>(ParameterizedTypeImpl.java:35)
at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.make(ParameterizedTypeImpl.java:77)
at sun.reflect.generics.factory.CoreReflectionFactory.makeParameterizedType(CoreReflectionFactory.java:86)
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:122)
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:31)
at sun.reflect.generics.repository.ClassRepository.getSuperInterfaces(ClassRepository.java:82)
at java.lang.Class.getGenericInterfaces(Class.java:794)
at org.springframework.core.GenericTypeResolver.getTypeVariableMap(GenericTypeResolver.java:151)
at org.springframework.core.GenericTypeResolver.resolveParameterType(GenericTypeResolver.java:81)
at org.springframework.beans.GenericTypeAwarePropertyDescriptor.getWriteMethodParameter(GenericTypeAwarePropertyDescriptor.java:97)
at org.springframework.beans.GenericTypeAwarePropertyDescriptor.getPropertyType(GenericTypeAwarePropertyDescriptor.java:79)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:138)
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:386)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1288)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1249)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
... 38 more
2013-07-10 18:18:01,977 ERROR main [[/services-2.0]] - Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'featureManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.reflect.MalformedParameterizedTypeException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:480)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3795)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4252)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:884)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:737)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1203)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.reflect.MalformedParameterizedTypeException
at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.validateConstructorArguments(ParameterizedTypeImpl.java:42)
at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.<init>(ParameterizedTypeImpl.java:35)
at sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl.make(ParameterizedTypeImpl.java:77)
at sun.reflect.generics.factory.CoreReflectionFactory.makeParameterizedType(CoreReflectionFactory.java:86)
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:122)
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:31)
at sun.reflect.generics.repository.ClassRepository.getSuperInterfaces(ClassRepository.java:82)
at java.lang.Class.getGenericInterfaces(Class.java:794)
at org.springframework.core.GenericTypeResolver.getTypeVariableMap(GenericTypeResolver.java:151)
at org.springframework.core.GenericTypeResolver.resolveParameterType(GenericTypeResolver.java:81)
at org.springframework.beans.GenericTypeAwarePropertyDescriptor.getWriteMethodParameter(GenericTypeAwarePropertyDescriptor.java:97)
at org.springframework.beans.GenericTypeAwarePropertyDescriptor.getPropertyType(GenericTypeAwarePropertyDescriptor.java:79)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:138)
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:386)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1288)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1249)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
... 38 more

Christian Kaltepoth

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Jul 15, 2013, 1:25:09 AM7/15/13
to togglz...@googlegroups.com, Mohammed Yousuff
Let me know if this worked for you. I would be interested to know if this is a problem with older Spring versions.


2013/7/11 Christian Kaltepoth <chri...@kaltepoth.de>

Mohammed Yousuff

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Jul 15, 2013, 4:33:10 AM7/15/13
to Christian Kaltepoth, togglz...@googlegroups.com
Thanks for your help..

I finally setup togglz using servlet implementation. i have not tried the spring way again..

Personally I feel the  tool was awesome but It requires some more documentation for easy integration :)

Christian Kaltepoth

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Jul 15, 2013, 5:08:03 AM7/15/13
to Mohammed Yousuff, togglz...@googlegroups.com
Hey,

OK, I created a ticket to track the Spring issue:


Could you tell me which version of Spring you are using? This would help me to find the real cause for this.

Thanks

Christian



2013/7/15 Mohammed Yousuff <java...@gmail.com>
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