Here is what I know about enhancer: Enhancer is a term in cglib, an enhancer is a subclass of original class which 'enhances' its functionality In Cloudstack, enhancer (and interceptor) is used to implement aspect-oriented features, e.g, transaction, events framework.. Classes that implement ComponentMethodInterceptable are actually instantiated with their enhancers
You can check com.cloud.utils.component.ComponentInstantiationPostProcessor for details about how enhancer co-work with method interceptors. And for interceptors: ActionEventInterceptor : implement annotation-based event framework TransactionContextBuilder: implement annotation-based transaction Regards Mice -----Original Message----- From: Mike Tutkowski [mailto:mike.tutkow...@solidfire.com] Sent: Thursday, May 09, 2013 12:37 PM To: dev@cloudstack.apache.org Subject: "_Enhancer" Question Hi, I was wondering if someone could explain to me the "_Enhancer" pattern we are using in CloudStack (below) and how this kind of class is created. class org.apache.cloudstack.storage.allocator.ZoneWideStoragePoolAllocator_EnhancerByCloudStack_4ff7ea3a Thanks! -- *Mike Tutkowski* *Senior CloudStack Developer, SolidFire Inc.* e: mike.tutkow...@solidfire.com o: 303.746.7302 Advancing the way the world uses the cloud<http://solidfire.com/solution/overview/?video=play> *™*
