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.api.util.NetconfConstants;
  16 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactory;
  17 import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
  18 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
  19 import org.osgi.framework.BundleActivator;
  20 import org.osgi.framework.BundleContext;
  21 import org.osgi.framework.ServiceReference;
  22 import org.osgi.framework.ServiceRegistration;
  23 import org.osgi.util.tracker.ServiceTracker;
  24 import org.osgi.util.tracker.ServiceTrackerCustomizer;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class Activator implements BundleActivator {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(Activator.class);
  31
  32     private BundleContext context;
  33     private ServiceRegistration<?> osgiRegistration;
  34     private ConfigRegistryLookupThread configRegistryLookup = null;
  35
  36     @Override
  37     public void start(final BundleContext context) throws Exception {
  38         this.context = context;
  39
  40         ServiceTrackerCustomizer<SchemaContextProvider, ConfigRegistryLookupThread> customizer = new ServiceTrackerCustomizer<SchemaContextProvider, ConfigRegistryLookupThread>() {
  41             @Override
  42             public ConfigRegistryLookupThread addingService(ServiceReference<SchemaContextProvider> reference) {
  43                 LOG.debug("Got addingService(SchemaContextProvider) event, starting ConfigRegistryLookupThread");
  44                 checkState(configRegistryLookup == null, "More than one onYangStoreAdded received");
  45
  46                 SchemaContextProvider schemaContextProvider = reference.getBundle().getBundleContext().getService(reference);
  47
  48                 YangStoreService yangStoreService = new YangStoreService(schemaContextProvider, context);
  49                 configRegistryLookup = new ConfigRegistryLookupThread(yangStoreService);
  50                 configRegistryLookup.start();
  51                 return configRegistryLookup;
  52             }
  53
  54             @Override
  55             public void modifiedService(ServiceReference<SchemaContextProvider> reference, ConfigRegistryLookupThread configRegistryLookup) {
  56                 LOG.debug("Got modifiedService(SchemaContextProvider) event");
  57                 final BindingRuntimeContext runtimeContext = (BindingRuntimeContext) reference.getProperty(BindingRuntimeContext.class.getName());
  58                 LOG.debug("BindingRuntimeContext retrieved as {}", runtimeContext);
  59                 configRegistryLookup.yangStoreService.refresh(runtimeContext);
  60
  61             }
  62
  63             @Override
  64             public void removedService(ServiceReference<SchemaContextProvider> reference, ConfigRegistryLookupThread configRegistryLookup) {
  65                 configRegistryLookup.interrupt();
  66                 if (osgiRegistration != null) {
  67                     osgiRegistration.unregister();
  68                 }
  69                 osgiRegistration = null;
  70                 Activator.this.configRegistryLookup = null;
  71             }
  72         };
  73
  74         ServiceTracker<SchemaContextProvider, ConfigRegistryLookupThread> listenerTracker = new ServiceTracker<>(context, SchemaContextProvider.class, customizer);
  75         listenerTracker.open();
  76     }
  77
  78     @Override
  79     public void stop(BundleContext context) {
  80         if (configRegistryLookup != null) {
  81             configRegistryLookup.interrupt();
  82         }
  83     }
  84
  85     private class ConfigRegistryLookupThread extends Thread {
  86         private final YangStoreService yangStoreService;
  87
  88         private ConfigRegistryLookupThread(YangStoreService yangStoreService) {
  89             super("config-registry-lookup");
  90             this.yangStoreService = yangStoreService;
  91         }
  92
  93         @Override
  94         public void run() {
  95             NetconfOperationServiceFactoryImpl factory = new NetconfOperationServiceFactoryImpl(yangStoreService);
  96             LOG.debug("Registering into OSGi");
  97             Dictionary<String, String> properties = new Hashtable<>();
  98             properties.put(NetconfConstants.SERVICE_NAME, NetconfConstants.CONFIG_NETCONF_CONNECTOR);
  99             osgiRegistration = context.registerService(NetconfOperationServiceFactory.class, factory, properties);
 100         }
 101     }
 102 }