class InvokerInvocationHandler implements InvocationHandler {

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        if (method.getDeclaringClass() == Object.class) {
            return method.invoke(invoker, args);
        }
        String methodName = method.getName();
        Class<?>[] parameterTypes = method.getParameterTypes();
        if (parameterTypes.length == 0) {
            if ("toString".equals(methodName)) {
                return invoker.toString();
            } else if ("$destroy".equals(methodName)) {
                invoker.destroy();
                return null;
            } else if ("hashCode".equals(methodName)) {
                return invoker.hashCode();
            }
        } else if (parameterTypes.length == 1 && "equals".equals(methodName)) {
            return invoker.equals(args[0]);
        }
        RpcInvocation rpcInvocation = new RpcInvocation(method, invoker.getInterface().getName(), protocolServiceKey, args);
        String serviceKey = invoker.getUrl().getServiceKey();
        rpcInvocation.setTargetServiceUniqueName(serviceKey);

        // invoker.getUrl() returns consumer url.
        RpcContext.setRpcContext(invoker.getUrl());

        if (consumerModel != null) {
            rpcInvocation.put(Constants.CONSUMER_MODEL, consumerModel);
            rpcInvocation.put(Constants.METHOD_MODEL, consumerModel.getMethodModel(method));
        }

        return invoker.invoke(rpcInvocation).recreate();
    }

    public  InvokerInvocationHandler(Invoker<?> handler);

}