opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/sal/dom/broker/osgi/ProxyFactory.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.sal.dom.broker.osgi;
   9
  10 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  11 import org.opendaylight.controller.md.sal.dom.api.DOMMountPointService;
  12 import org.opendaylight.controller.sal.core.api.BrokerService;
  13 import org.osgi.framework.ServiceReference;
  14
  15 @SuppressWarnings("unchecked")
  16 public final class ProxyFactory {
  17
  18     private ProxyFactory() {
  19     }
  20
  21     public static <T extends BrokerService> T createProxy(final ServiceReference<T> serviceRef, final T service) {
  22
  23         Object createProxyImpl = ProxyFactory.createProxyImpl(serviceRef, service);
  24         return (T) createProxyImpl;
  25     }
  26
  27     private static Object createProxyImpl(final ServiceReference<?> ref, final DOMMountPointService service) {
  28
  29         return new DOMMountPointServiceProxy((ServiceReference<DOMMountPointService>) ref, service);
  30     }
  31
  32     private static DOMDataBrokerProxy createProxyImpl(final ServiceReference<?> ref, final DOMDataBroker service) {
  33
  34         return new DOMDataBrokerProxy((ServiceReference<DOMDataBroker>) ref, service);
  35     }
  36
  37     private static Object createProxyImpl(final ServiceReference<?> ref, final BrokerService service) {
  38         if (service == null) {
  39             throw new IllegalArgumentException("service can't be null");
  40         }
  41
  42         if (service instanceof DOMDataBroker) {
  43             return createProxyImpl(ref, (DOMDataBroker) service);
  44         } else if (service instanceof DOMMountPointService) {
  45             return createProxyImpl(ref, (DOMMountPointService) service);
  46         }
  47
  48         return createProxyImplFallback(ref, service);
  49     }
  50
  51     private static Object createProxyImplFallback(final ServiceReference<?> reference, final BrokerService service) {
  52
  53         return service;
  54     }
  55 }