net.anotheria.moskito.core.dynamic

Class MoskitoInvokationProxy<S extends IStats>

java.lang.Object

net.anotheria.moskito.core.dynamic.MoskitoInvokationProxy<S>

All Implemented Interfaces:

java.lang.reflect.InvocationHandler

public class MoskitoInvokationProxy<S extends IStats>
extends java.lang.Object
implements java.lang.reflect.InvocationHandler

This is an InvocationHandler which is used whenever you want to monitor an impementation of an interface in a AOP way. Using this proxy you can inject monitoring to any code by just 'surrounding' the impl with measuring proxy.

 For example if you have an 
 public interface IImagesService {
        List<Image> getImages() throws ImagesServiceException;
 }
 and an implementation of it : ImageServiceImpl, with whatever implementation details, and you want to monitor all calls to this impl, and you typically have an ImageServiceFactory
 all you need to do is (example code):
 public class ImagesServiceFactory{

        private static AtomicInteger instanceCounter = new AtomicInteger(0);

        public static IImagesService createImagesService(){
                MoskitoInvokationProxy proxy = new MoskitoInvokationProxy(
                        createInstance(),
                        new ServiceStatsCallHandler(),
                        new ServiceStatsFactory(),
                        "IImagesService-"+instanceCounter.incrementAndGet(),
                        "service",
                        "asg",
                        IImagesService.class, ASGService.class
                );
                return (IImagesService) proxy.createProxy();
        }

        private static IImagesService createInstance(){
                return ImagesServiceImpl.getInstance();
        }
  
 

Author:

lrosenberg

Constructor Summary

Constructors

Constructor and Description
MoskitoInvokationProxy(java.lang.Object anImplementation, IOnDemandCallHandler aHandler, IOnDemandStatsFactory<S> factory, java.lang.String producerId, java.lang.String category, java.lang.String subsystem, java.lang.Class<?>... interfaces) Creates a new MoskitoInvocationProxy with given implementation, handler and stats factory, and interfaces to monitor.
MoskitoInvokationProxy(java.lang.Object anImplementation, IOnDemandCallHandler aHandler, IOnDemandStatsFactory factory, java.lang.Class<?>... interfaces) Creates a new MoskitoInvokationProxy.
MoskitoInvokationProxy(java.lang.Object anImplementation, IOnDemandCallHandler aHandler, IOnDemandStatsFactory factory, java.lang.String category, java.lang.String subsystem, java.lang.Class<?>... interfaces) Creates a new MoskitoInvokationProxy.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	createProxy() Creates the actual proxy object.
java.lang.Object	createProxy(java.lang.ClassLoader classLoader) Creates the proxy with the submitted classloader.
java.lang.Object	getImplementation() Returns the internally used implementation of the interfaces.
IStatsProducer	getProducer() Returns the producer.
java.lang.Object	invoke(java.lang.Object aProxy, java.lang.reflect.Method aMethod, java.lang.Object[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MoskitoInvokationProxy

public MoskitoInvokationProxy(java.lang.Object anImplementation,
                              IOnDemandCallHandler aHandler,
                              IOnDemandStatsFactory<S> factory,
                              java.lang.String producerId,
                              java.lang.String category,
                              java.lang.String subsystem,
                              java.lang.Class<?>... interfaces)

Creates a new MoskitoInvocationProxy with given implementation, handler and stats factory, and interfaces to monitor.

Parameters:

anImplementation - Implementation object for all interfaces, i.e. MyServiceImpl

aHandler - the call handler, i.e. net.java.dev.moskito.core.predefined.ServiceStatsCallHandler

factory - the factory for the stats, i.e. net.java.dev.moskito.core.predefined.ServiceStatsFactory

producerId - the id of the producer (for ui) i.e. MyService or MyService-1 ...

category - the key/name/id for the monitored category i.e. service,api,controller,persistence

subsystem - the key/name/id for the monitored i.e. user,shop,messaging

interfaces - interfaces which can be called from outside, i.e. MyService

MoskitoInvokationProxy

public MoskitoInvokationProxy(java.lang.Object anImplementation,
                              IOnDemandCallHandler aHandler,
                              IOnDemandStatsFactory factory,
                              java.lang.Class<?>... interfaces)

Creates a new MoskitoInvokationProxy.

Parameters:

anImplementation - object for monitoring. Should implement the supplied interfaces.

aHandler - a handler.

factory - factory for stats objects.

interfaces - multiple interfaces that should be supported.

MoskitoInvokationProxy

public MoskitoInvokationProxy(java.lang.Object anImplementation,
                              IOnDemandCallHandler aHandler,
                              IOnDemandStatsFactory factory,
                              java.lang.String category,
                              java.lang.String subsystem,
                              java.lang.Class<?>... interfaces)

Creates a new MoskitoInvokationProxy.

Parameters:

anImplementation - object for monitoring. Should implement the supplied interfaces.

aHandler - a handler.

factory - factory for stats objects.

category - category for presentation.

subsystem - subsystem for presentation.

interfaces - multiple interfaces that should be supported.

Method Detail

invoke

public java.lang.Object invoke(java.lang.Object aProxy,
                               java.lang.reflect.Method aMethod,
                               java.lang.Object[] args)
                        throws java.lang.Throwable

Specified by:

invoke in interface java.lang.reflect.InvocationHandler

Throws:

java.lang.Throwable

createProxy

public java.lang.Object createProxy()

Creates the actual proxy object.

Returns:

createProxy

public java.lang.Object createProxy(java.lang.ClassLoader classLoader)

Creates the proxy with the submitted classloader.

Parameters:

classLoader -

Returns:

getImplementation

public java.lang.Object getImplementation()

Returns the internally used implementation of the interfaces.

Returns:

getProducer

public IStatsProducer getProducer()

Returns the producer.

Returns: