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 static com.google.common.base.Preconditions.checkState;
  12
  13 import java.util.Dictionary;
  14 import java.util.Hashtable;
  15 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactory;
  16 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
  17 import org.osgi.framework.BundleActivator;
  18 import org.osgi.framework.BundleContext;
  19 import org.osgi.framework.ServiceReference;
  20 import org.osgi.framework.ServiceRegistration;
  21 import org.osgi.util.tracker.ServiceTracker;
  22 import org.osgi.util.tracker.ServiceTrackerCustomizer;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 public class Activator implements BundleActivator {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(Activator.class);
  29
  30     private BundleContext context;
  31     private ServiceRegistration<?> osgiRegistration;
  32     private ConfigRegistryLookupThread configRegistryLookup = null;
  33
  34     @Override
  35     public void start(final BundleContext context) throws Exception {
  36         this.context = context;
  37
  38         ServiceTrackerCustomizer<SchemaContextProvider, ConfigRegistryLookupThread> customizer = new ServiceTrackerCustomizer<SchemaContextProvider, ConfigRegistryLookupThread>() {
  39             @Override
  40             public ConfigRegistryLookupThread addingService(ServiceReference<SchemaContextProvider> reference) {
  41                 LOG.debug("Got addingService(SchemaContextProvider) event, starting ConfigRegistryLookupThread");
  42                 checkState(configRegistryLookup == null, "More than one onYangStoreAdded received");
  43
  44                 SchemaContextProvider schemaContextProvider = reference.getBundle().getBundleContext().getService(reference);
  45
  46                 YangStoreService yangStoreService = new YangStoreService(schemaContextProvider, context);
  47                 configRegistryLookup = new ConfigRegistryLookupThread(yangStoreService);
  48                 configRegistryLookup.start();
  49                 return configRegistryLookup;
  50             }
  51
  52             @Override
  53             public void modifiedService(ServiceReference<SchemaContextProvider> reference, ConfigRegistryLookupThread configRegistryLookup) {
  54                 LOG.debug("Got modifiedService(SchemaContextProvider) event");
  55                 configRegistryLookup.yangStoreService.refresh();
  56
  57             }
  58
  59             @Override
  60             public void removedService(ServiceReference<SchemaContextProvider> reference, ConfigRegistryLookupThread configRegistryLookup) {
  61                 configRegistryLookup.interrupt();
  62                 if (osgiRegistration != null) {
  63                     osgiRegistration.unregister();
  64                 }
  65                 osgiRegistration = null;
  66                 Activator.this.configRegistryLookup = null;
  67             }
  68         };
  69
  70         ServiceTracker<SchemaContextProvider, ConfigRegistryLookupThread> listenerTracker = new ServiceTracker<>(context, SchemaContextProvider.class, customizer);
  71         listenerTracker.open();
  72     }
  73
  74     @Override
  75     public void stop(BundleContext context) {
  76         if (configRegistryLookup != null) {
  77             configRegistryLookup.interrupt();
  78         }
  79     }
  80
  81     private class ConfigRegistryLookupThread extends Thread {
  82         private final YangStoreService yangStoreService;
  83
  84         private ConfigRegistryLookupThread(YangStoreService yangStoreService) {
  85             super("config-registry-lookup");
  86             this.yangStoreService = yangStoreService;
  87         }
  88
  89         @Override
  90         public void run() {
  91             NetconfOperationServiceFactoryImpl factory = new NetconfOperationServiceFactoryImpl(yangStoreService);
  92             LOG.debug("Registering into OSGi");
  93             Dictionary<String, String> properties = new Hashtable<>();
  94             properties.put("name", "config-netconf-connector");
  95             osgiRegistration = context.registerService(NetconfOperationServiceFactory.class, factory, properties);
  96         }
  97     }
  98 }