opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/osgi/mapping/RefreshingSCPModuleInfoRegistry.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.config.manager.impl.osgi.mapping;
  10
  11 import org.opendaylight.yangtools.concepts.ObjectRegistration;
  12 import org.opendaylight.yangtools.sal.binding.generator.api.ModuleInfoRegistry;
  13 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  14 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
  15 import org.osgi.framework.BundleContext;
  16 import org.osgi.framework.ServiceRegistration;
  17
  18 import java.util.Hashtable;
  19
  20 /**
  21  * Update SchemaContext service in Service Registry each time new YangModuleInfo is added or removed.
  22  */
  23 public class RefreshingSCPModuleInfoRegistry implements ModuleInfoRegistry, AutoCloseable {
  24
  25     private final ModuleInfoRegistry moduleInfoRegistry;
  26     private final ServiceRegistration<SchemaContextProvider> osgiReg;
  27
  28     public RefreshingSCPModuleInfoRegistry(ModuleInfoRegistry moduleInfoRegistry,
  29                                            SchemaContextProvider schemaContextProvider, BundleContext bundleContext) {
  30         this.moduleInfoRegistry = moduleInfoRegistry;
  31         osgiReg = bundleContext.registerService(SchemaContextProvider.class, schemaContextProvider, new Hashtable<String, String>());
  32     }
  33
  34     private void updateService() {
  35         osgiReg.setProperties(null); // send modifiedService event
  36     }
  37
  38     @Override
  39     public ObjectRegistration<YangModuleInfo> registerModuleInfo(YangModuleInfo yangModuleInfo) {
  40         ObjectRegistration<YangModuleInfo> yangModuleInfoObjectRegistration = moduleInfoRegistry.registerModuleInfo(yangModuleInfo);
  41         ObjectRegistrationWrapper wrapper = new ObjectRegistrationWrapper(yangModuleInfoObjectRegistration);
  42         updateService();
  43         return wrapper;
  44     }
  45
  46
  47     @Override
  48     public void close() {
  49         osgiReg.unregister();
  50     }
  51
  52     private class ObjectRegistrationWrapper implements ObjectRegistration<YangModuleInfo> {
  53         private final ObjectRegistration<YangModuleInfo> inner;
  54
  55         private ObjectRegistrationWrapper(ObjectRegistration<YangModuleInfo> inner) {
  56             this.inner = inner;
  57         }
  58
  59         @Override
  60         public YangModuleInfo getInstance() {
  61             return inner.getInstance();
  62         }
  63
  64         @Override
  65         public void close() throws Exception {
  66             inner.close();
  67             updateService();// send modify event when a bundle disappears
  68         }
  69
  70
  71         @Override
  72         public String toString() {
  73             return inner.toString();
  74         }
  75     }
  76 }