netconf/netconf-impl/src/main/java/org/opendaylight/netconf/impl/osgi/NetconfOperationServiceFactoryTracker.java

   1 /*
   2  * Copyright (c) 2013 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.netconf.impl.osgi;
   9
  10 import org.opendaylight.netconf.api.util.NetconfConstants;
  11 import org.opendaylight.netconf.mapping.api.NetconfOperationServiceFactory;
  12 import org.opendaylight.netconf.mapping.api.NetconfOperationServiceFactoryListener;
  13 import org.osgi.framework.BundleContext;
  14 import org.osgi.framework.ServiceReference;
  15 import org.osgi.util.tracker.ServiceTracker;
  16
  17 class NetconfOperationServiceFactoryTracker extends
  18         ServiceTracker<NetconfOperationServiceFactory, NetconfOperationServiceFactory> {
  19     private final NetconfOperationServiceFactoryListener factoriesListener;
  20
  21     NetconfOperationServiceFactoryTracker(BundleContext context,
  22                                           final NetconfOperationServiceFactoryListener factoriesListener) {
  23         super(context, NetconfOperationServiceFactory.class, null);
  24         this.factoriesListener = factoriesListener;
  25     }
  26
  27     @Override
  28     public NetconfOperationServiceFactory addingService(ServiceReference<NetconfOperationServiceFactory> reference) {
  29         Object property = reference.getProperty(NetconfConstants.SERVICE_NAME);
  30         if (property != null && isMarkedForConfig(property)) {
  31             NetconfOperationServiceFactory netconfOperationServiceFactory = super.addingService(reference);
  32             factoriesListener.onAddNetconfOperationServiceFactory(netconfOperationServiceFactory);
  33             return netconfOperationServiceFactory;
  34         }
  35
  36         return null;
  37     }
  38
  39     @Override
  40     public void removedService(ServiceReference<NetconfOperationServiceFactory> reference,
  41                                NetconfOperationServiceFactory netconfOperationServiceFactory) {
  42         if (netconfOperationServiceFactory != null) {
  43             factoriesListener.onRemoveNetconfOperationServiceFactory(netconfOperationServiceFactory);
  44         }
  45     }
  46
  47     private boolean isMarkedForConfig(Object property) {
  48         return NetconfConstants.CONFIG_SERVICE_MARKERS.contains(property);
  49     }
  50
  51 }