opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/osgi/mapping/RefreshingSCPModuleInfoRegistry.java

   1 /*
   2  * Copyright (c) 2013, 2017 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.Dictionary;
  12 import java.util.Hashtable;
  13 import org.opendaylight.mdsal.binding.generator.api.ClassLoadingStrategy;
  14 import org.opendaylight.mdsal.binding.generator.api.ModuleInfoRegistry;
  15 import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
  16 import org.opendaylight.yangtools.concepts.ObjectRegistration;
  17 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  18 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
  19 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  20 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceProvider;
  21 import org.osgi.framework.BundleContext;
  22 import org.osgi.framework.ServiceRegistration;
  23
  24 /**
  25  * Update SchemaContext service in Service Registry each time new YangModuleInfo
  26  * is added or removed.
  27  */
  28 public class RefreshingSCPModuleInfoRegistry implements ModuleInfoRegistry, AutoCloseable {
  29     private final ModuleInfoRegistry moduleInfoRegistry;
  30     private final SchemaContextProvider schemaContextProvider;
  31     private final SchemaSourceProvider<YangTextSchemaSource> sourceProvider;
  32     private final BindingContextProvider bindingContextProvider;
  33     private final ClassLoadingStrategy classLoadingStrat;
  34
  35     private volatile ServiceRegistration<SchemaContextProvider> osgiReg;
  36
  37     public RefreshingSCPModuleInfoRegistry(final ModuleInfoRegistry moduleInfoRegistry,
  38             final SchemaContextProvider schemaContextProvider, final ClassLoadingStrategy classLoadingStrat,
  39             final SchemaSourceProvider<YangTextSchemaSource> sourceProvider,
  40             final BindingContextProvider bindingContextProvider, final BundleContext bundleContext) {
  41
  42         this.moduleInfoRegistry = moduleInfoRegistry;
  43         this.schemaContextProvider = schemaContextProvider;
  44         this.classLoadingStrat = classLoadingStrat;
  45         this.sourceProvider = sourceProvider;
  46         this.bindingContextProvider = bindingContextProvider;
  47         this.osgiReg = bundleContext.registerService(SchemaContextProvider.class, schemaContextProvider,
  48                 new Hashtable<String, String>());
  49     }
  50
  51     public synchronized void updateService() {
  52         if (this.osgiReg != null) {
  53             this.bindingContextProvider.update(this.classLoadingStrat, this.schemaContextProvider);
  54
  55             final Dictionary<String, Object> props = new Hashtable<>();
  56             props.put(BindingRuntimeContext.class.getName(), this.bindingContextProvider.getBindingContext());
  57             props.put(SchemaSourceProvider.class.getName(), this.sourceProvider);
  58             // send modifiedService event
  59             this.osgiReg.setProperties(props);
  60         }
  61     }
  62
  63     @Override
  64     public ObjectRegistration<YangModuleInfo> registerModuleInfo(final YangModuleInfo yangModuleInfo) {
  65         final ObjectRegistration<YangModuleInfo> yangModuleInfoObjectRegistration = this.moduleInfoRegistry
  66                 .registerModuleInfo(yangModuleInfo);
  67         return new ObjectRegistrationWrapper(yangModuleInfoObjectRegistration);
  68     }
  69
  70     @Override
  71     public synchronized void close() throws Exception {
  72         if (this.osgiReg != null) {
  73             this.osgiReg.unregister();
  74         }
  75
  76         this.osgiReg = null;
  77     }
  78
  79     private class ObjectRegistrationWrapper implements ObjectRegistration<YangModuleInfo> {
  80         private final ObjectRegistration<YangModuleInfo> inner;
  81
  82         ObjectRegistrationWrapper(final ObjectRegistration<YangModuleInfo> inner) {
  83             this.inner = inner;
  84         }
  85
  86         @Override
  87         public YangModuleInfo getInstance() {
  88             return this.inner.getInstance();
  89         }
  90
  91         @Override
  92         public void close() {
  93             this.inner.close();
  94             // send modify event when a bundle disappears
  95             updateService();
  96         }
  97
  98         @Override
  99         public String toString() {
 100             return this.inner.toString();
 101         }
 102     }
 103 }