opendaylight/netconf/config-netconf-connector/src/main/java/org/opendaylight/controller/netconf/confignetconfconnector/osgi/Activator.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
   9 package org.opendaylight.controller.netconf.confignetconfconnector.osgi;
  10
  11 import org.opendaylight.controller.config.yang.store.api.YangStoreService;
  12 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactory;
  13 import org.osgi.framework.BundleActivator;
  14 import org.osgi.framework.BundleContext;
  15 import org.osgi.framework.ServiceRegistration;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 import java.util.Hashtable;
  20
  21 import static com.google.common.base.Preconditions.checkState;
  22
  23 public class Activator implements BundleActivator, YangStoreServiceTracker.YangStoreTrackerListener {
  24
  25     private static final Logger logger = LoggerFactory.getLogger(Activator.class);
  26
  27     private BundleContext context;
  28     private ServiceRegistration osgiRegistration;
  29     private ConfigRegistryLookupThread configRegistryLookup = null;
  30
  31     @Override
  32     public void start(BundleContext context) throws Exception {
  33         this.context = context;
  34         YangStoreServiceTracker tracker = new YangStoreServiceTracker(context, this);
  35         tracker.open();
  36     }
  37
  38     @Override
  39     public void stop(BundleContext context) throws Exception {
  40         if (configRegistryLookup != null) {
  41             configRegistryLookup.interrupt();
  42         }
  43     }
  44
  45     @Override
  46     public synchronized void onYangStoreAdded(YangStoreService yangStoreService) {
  47         checkState(configRegistryLookup  == null, "More than one onYangStoreAdded received");
  48         configRegistryLookup = new ConfigRegistryLookupThread(yangStoreService);
  49         configRegistryLookup.start();
  50     }
  51
  52     @Override
  53     public synchronized void onYangStoreRemoved() {
  54         configRegistryLookup.interrupt();
  55         if (osgiRegistration != null) {
  56             osgiRegistration.unregister();
  57         }
  58         osgiRegistration = null;
  59         configRegistryLookup = null;
  60     }
  61
  62     private class ConfigRegistryLookupThread extends Thread {
  63         private final YangStoreService yangStoreService;
  64
  65         private ConfigRegistryLookupThread(YangStoreService yangStoreService) {
  66             super("config-registry-lookup");
  67             this.yangStoreService = yangStoreService;
  68         }
  69
  70         @Override
  71         public void run() {
  72             NetconfOperationServiceFactoryImpl factory = new NetconfOperationServiceFactoryImpl(yangStoreService);
  73             logger.debug("Registering into OSGi");
  74             osgiRegistration = context.registerService(new String[]{NetconfOperationServiceFactory.class.getName()}, factory,
  75                     new Hashtable<String, Object>());
  76         }
  77     }
  78 }