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I am using type variables in my abstract parent service class where I have some service methods. I am using @HystrixCommand annotation to use some fallback method.

Here is my sample code

@Service
public abstract class MyAbstractParentClass<T extends IModel<T>,S extends Serializable> implements IService<T, S>, InitializingBean{


private MyRepo<T, S > repo;

@Override
@HystrixCommand(fallbackMethod="handleError", groupKey="MyClass", commandKey="findUserTest")
public T findUserTest(S userId){
    String str = null;
    System.out.println(str.length());// intentional nullpointer exception
    T user  = repo.findOne(userId);
    return user;
}

public T handleError(S userId){
    T user  = repo.findOne(userId);
    return user;
}

public abstract MyRepo<T, S> getRepository();

@Override
public void afterPropertiesSet() throws Exception {
    repo = getRepository();

}
}

But unfortunately after using the annotation my api is not working it is giving the below java heap space error.

{ "timestamp": 1500581418921, "status": 500, "error": "Internal Server Error", "exception": "java.lang.OutOfMemoryError", "message": "Java heap space", "path": "/rest/api/path" }

If I do not use any type variables it is working fine in the parent class 

@HystrixCommand(fallbackMethod="handleError", groupKey="MyClass", commandKey="findUserTest")
public String findUserTest(String userId){
    String str = null;
    System.out.println(str.length());

    return userId;
}

public String handleError(String userId){

    return "Error Handled";
}

If I use this annotation in any of my child classes service methods, fallback mechanism is working fine.
Any help will be appreciated

Angshuman
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  • Does it have to do with the type or the fact it's defined in an abstract class? – spencergibb Jul 20 '17 at 21:04
  • @spencergibb It is not due to the abstract class. Because I checked in the abstract class by removing all Type variables. Fallback is working fine. I have added bit more details. – Angshuman Jul 20 '17 at 21:58

0 Answers0