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.netconf.mapping.api.NetconfOperationServiceFactory;
  12 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
  13 import org.osgi.framework.BundleActivator;
  14 import org.osgi.framework.BundleContext;
  15 import org.osgi.framework.ServiceReference;
  16 import org.osgi.framework.ServiceRegistration;
  17 import org.osgi.util.tracker.ServiceTracker;
  18 import org.osgi.util.tracker.ServiceTrackerCustomizer;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 import java.util.Dictionary;
  23 import java.util.Hashtable;
  24
  25 import static com.google.common.base.Preconditions.checkState;
  26
  27 public class Activator implements BundleActivator {
  28
  29     private static final Logger logger = LoggerFactory.getLogger(Activator.class);
  30
  31     private BundleContext context;
  32     private ServiceRegistration osgiRegistration;
  33     private ConfigRegistryLookupThread configRegistryLookup = null;
  34
  35     @Override
  36     public void start(final BundleContext context) throws Exception {
  37         this.context = context;
  38
  39         ServiceTrackerCustomizer<SchemaContextProvider, ConfigRegistryLookupThread> customizer = new ServiceTrackerCustomizer<SchemaContextProvider, ConfigRegistryLookupThread>() {
  40             @Override
  41             public ConfigRegistryLookupThread addingService(ServiceReference<SchemaContextProvider> reference) {
  42                 logger.debug("Got addingService(SchemaContextProvider) event, starting ConfigRegistryLookupThread");
  43                 checkState(configRegistryLookup == null, "More than one onYangStoreAdded received");
  44
  45                 SchemaContextProvider schemaContextProvider = reference.getBundle().getBundleContext().getService(reference);
  46
  47                 YangStoreServiceImpl yangStoreService = new YangStoreServiceImpl(schemaContextProvider);
  48                 configRegistryLookup = new ConfigRegistryLookupThread(yangStoreService);
  49                 configRegistryLookup.start();
  50                 return configRegistryLookup;
  51             }
  52
  53             @Override
  54             public void modifiedService(ServiceReference<SchemaContextProvider> reference, ConfigRegistryLookupThread configRegistryLookup) {
  55                 logger.debug("Got modifiedService(SchemaContextProvider) event");
  56                 configRegistryLookup.yangStoreService.refresh();
  57
  58             }
  59
  60             @Override
  61             public void removedService(ServiceReference<SchemaContextProvider> reference, ConfigRegistryLookupThread configRegistryLookup) {
  62                 configRegistryLookup.interrupt();
  63                 if (osgiRegistration != null) {
  64                     osgiRegistration.unregister();
  65                 }
  66                 osgiRegistration = null;
  67                 Activator.this.configRegistryLookup = null;
  68             }
  69         };
  70
  71         ServiceTracker<SchemaContextProvider, ConfigRegistryLookupThread> listenerTracker = new ServiceTracker<>(context, SchemaContextProvider.class, customizer);
  72         listenerTracker.open();
  73     }
  74
  75     @Override
  76     public void stop(BundleContext context) {
  77         if (configRegistryLookup != null) {
  78             configRegistryLookup.interrupt();
  79         }
  80     }
  81
  82     private class ConfigRegistryLookupThread extends Thread {
  83         private final YangStoreServiceImpl yangStoreService;
  84
  85         private ConfigRegistryLookupThread(YangStoreServiceImpl yangStoreService) {
  86             super("config-registry-lookup");
  87             this.yangStoreService = yangStoreService;
  88         }
  89
  90         @Override
  91         public void run() {
  92             NetconfOperationServiceFactoryImpl factory = new NetconfOperationServiceFactoryImpl(yangStoreService);
  93             logger.debug("Registering into OSGi");
  94             Dictionary<String, String> properties = new Hashtable<>();
  95             properties.put("name", "config-netconf-connector");
  96             osgiRegistration = context.registerService(NetconfOperationServiceFactory.class, factory, properties);
  97         }
  98     }
  99 }