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.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  19 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceProvider;
  20 import org.osgi.framework.BundleContext;
  21 import org.osgi.framework.ServiceRegistration;
  22
  23 /**
  24  * Update SchemaContext service in Service Registry each time new YangModuleInfo is added or removed.
  25  */
  26 public class RefreshingSCPModuleInfoRegistry implements ModuleInfoRegistry, AutoCloseable {
  27
  28     private final ModuleInfoRegistry moduleInfoRegistry;
  29     private final SchemaContextProvider schemaContextProvider;
  30     private final SchemaSourceProvider<YangTextSchemaSource> sourceProvider;
  31     private final BindingContextProvider bindingContextProvider;
  32     private final ClassLoadingStrategy classLoadingStrat;
  33
  34     private final ServiceRegistration<SchemaContextProvider> osgiReg;
  35
  36     public RefreshingSCPModuleInfoRegistry(final ModuleInfoRegistry moduleInfoRegistry,
  37         final SchemaContextProvider schemaContextProvider, final ClassLoadingStrategy classLoadingStrat,
  38         final SchemaSourceProvider<YangTextSchemaSource> sourceProvider, final BindingContextProvider bindingContextProvider,
  39         final BundleContext bundleContext) {
  40
  41         this.moduleInfoRegistry = moduleInfoRegistry;
  42         this.schemaContextProvider = schemaContextProvider;
  43         this.classLoadingStrat = classLoadingStrat;
  44         this.sourceProvider = sourceProvider;
  45         this.bindingContextProvider = bindingContextProvider;
  46         osgiReg = bundleContext
  47             .registerService(SchemaContextProvider.class, schemaContextProvider, new Hashtable<String, String>());
  48     }
  49
  50     private void updateService() {
  51         bindingContextProvider.update(classLoadingStrat, schemaContextProvider);
  52         osgiReg.setProperties(new Hashtable<String, Object>() {{
  53                 put(BindingRuntimeContext.class.getName(), bindingContextProvider.getBindingContext());
  54                 put(SchemaSourceProvider.class.getName(), sourceProvider);
  55             }
  56         }); // send modifiedService event
  57     }
  58
  59     @Override
  60     public ObjectRegistration<YangModuleInfo> registerModuleInfo(YangModuleInfo yangModuleInfo) {
  61         ObjectRegistration<YangModuleInfo> yangModuleInfoObjectRegistration = moduleInfoRegistry.registerModuleInfo(yangModuleInfo);
  62         ObjectRegistrationWrapper wrapper = new ObjectRegistrationWrapper(yangModuleInfoObjectRegistration);
  63         updateService();
  64         return wrapper;
  65     }
  66
  67     @Override
  68     public void close() throws Exception {
  69         osgiReg.unregister();
  70     }
  71
  72     private class ObjectRegistrationWrapper implements ObjectRegistration<YangModuleInfo> {
  73         private final ObjectRegistration<YangModuleInfo> inner;
  74
  75         private ObjectRegistrationWrapper(ObjectRegistration<YangModuleInfo> inner) {
  76             this.inner = inner;
  77         }
  78
  79         @Override
  80         public YangModuleInfo getInstance() {
  81             return inner.getInstance();
  82         }
  83
  84         @Override
  85         public void close() throws Exception {
  86             inner.close();
  87             updateService();// send modify event when a bundle disappears
  88         }
  89
  90         @Override
  91         public String toString() {
  92             return inner.toString();
  93         }
  94     }
  95 }