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.ClassLoadingStrategy;
  14 import org.opendaylight.yangtools.sal.binding.generator.api.ModuleInfoRegistry;
  15 import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
  16 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  17 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
  18 import org.osgi.framework.BundleContext;
  19 import org.osgi.framework.ServiceRegistration;
  20
  21 /**
  22  * Update SchemaContext service in Service Registry each time new YangModuleInfo is added or removed.
  23  */
  24 public class RefreshingSCPModuleInfoRegistry implements ModuleInfoRegistry, AutoCloseable {
  25
  26     private final ModuleInfoRegistry moduleInfoRegistry;
  27     private final SchemaContextProvider schemaContextProvider;
  28     private final BindingContextProvider bindingContextProvider;
  29     private final ClassLoadingStrategy classLoadingStrat;
  30
  31     private final ServiceRegistration<SchemaContextProvider> osgiReg;
  32
  33     public RefreshingSCPModuleInfoRegistry(final ModuleInfoRegistry moduleInfoRegistry,
  34                                            final SchemaContextProvider schemaContextProvider, final ClassLoadingStrategy classLoadingStrat, final BindingContextProvider bindingContextProvider, final BundleContext bundleContext) {
  35         this.moduleInfoRegistry = moduleInfoRegistry;
  36         this.schemaContextProvider = schemaContextProvider;
  37         this.classLoadingStrat = classLoadingStrat;
  38         this.bindingContextProvider = bindingContextProvider;
  39         osgiReg = bundleContext.registerService(SchemaContextProvider.class, schemaContextProvider, new Hashtable<String, String>());
  40     }
  41
  42     private void updateService() {
  43         bindingContextProvider.update(classLoadingStrat, schemaContextProvider);
  44         osgiReg.setProperties(new Hashtable<String, Object>() {{
  45                 put(BindingRuntimeContext.class.getName(), bindingContextProvider.getBindingContext());
  46             }
  47         }); // send modifiedService event
  48     }
  49
  50     @Override
  51     public ObjectRegistration<YangModuleInfo> registerModuleInfo(YangModuleInfo yangModuleInfo) {
  52         ObjectRegistration<YangModuleInfo> yangModuleInfoObjectRegistration = moduleInfoRegistry.registerModuleInfo(yangModuleInfo);
  53         ObjectRegistrationWrapper wrapper = new ObjectRegistrationWrapper(yangModuleInfoObjectRegistration);
  54         updateService();
  55         return wrapper;
  56     }
  57
  58     @Override
  59     public void close() throws Exception {
  60         osgiReg.unregister();
  61     }
  62
  63     private class ObjectRegistrationWrapper implements ObjectRegistration<YangModuleInfo> {
  64         private final ObjectRegistration<YangModuleInfo> inner;
  65
  66         private ObjectRegistrationWrapper(ObjectRegistration<YangModuleInfo> inner) {
  67             this.inner = inner;
  68         }
  69
  70         @Override
  71         public YangModuleInfo getInstance() {
  72             return inner.getInstance();
  73         }
  74
  75         @Override
  76         public void close() throws Exception {
  77             inner.close();
  78             updateService();// send modify event when a bundle disappears
  79         }
  80
  81         @Override
  82         public String toString() {
  83             return inner.toString();
  84         }
  85     }
  86 }