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