opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/config/yang/md/sal/binding/impl/RuntimeMappingModule.java

   1 /*
   2  * Copyright (c) 2014 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 package org.opendaylight.controller.config.yang.md.sal.binding.impl;
   9
  10 import java.util.Hashtable;
  11 import java.util.Map.Entry;
  12 import java.util.Set;
  13
  14 import org.opendaylight.controller.sal.binding.codegen.impl.SingletonHolder;
  15 import org.opendaylight.yangtools.concepts.Delegator;
  16 import org.opendaylight.yangtools.sal.binding.generator.impl.RuntimeGeneratedMappingServiceImpl;
  17 import org.opendaylight.yangtools.yang.binding.DataContainer;
  18 import org.opendaylight.yangtools.yang.binding.DataObject;
  19 import org.opendaylight.yangtools.yang.binding.RpcService;
  20 import org.opendaylight.yangtools.yang.common.QName;
  21 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
  22 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  23 import org.opendaylight.yangtools.yang.data.impl.codec.BindingIndependentMappingService;
  24 import org.opendaylight.yangtools.yang.data.impl.codec.CodecRegistry;
  25 import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
  26 import org.opendaylight.yangtools.yang.model.api.SchemaServiceListener;
  27 import org.osgi.framework.BundleContext;
  28 import org.osgi.framework.ServiceReference;
  29
  30 import com.google.common.base.Optional;
  31 import com.google.common.base.Preconditions;
  32
  33 /**
  34 *
  35 */
  36 public final class RuntimeMappingModule extends
  37         org.opendaylight.controller.config.yang.md.sal.binding.impl.AbstractRuntimeMappingModule {
  38
  39     private BundleContext bundleContext;
  40
  41     public RuntimeMappingModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier,
  42             org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
  43         super(identifier, dependencyResolver);
  44     }
  45
  46     public RuntimeMappingModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier,
  47             org.opendaylight.controller.config.api.DependencyResolver dependencyResolver,
  48             RuntimeMappingModule oldModule, java.lang.AutoCloseable oldInstance) {
  49         super(identifier, dependencyResolver, oldModule, oldInstance);
  50     }
  51
  52     @Override
  53     public void validate() {
  54         super.validate();
  55         Preconditions.checkNotNull(bundleContext);
  56         // Add custom validation for module attributes here.
  57     }
  58
  59     @Override
  60     public boolean canReuseInstance(AbstractRuntimeMappingModule oldModule) {
  61         return true;
  62     }
  63
  64     @Override
  65     public java.lang.AutoCloseable createInstance() {
  66
  67         RuntimeGeneratedMappingServiceProxy potential = tryToReuseGlobalInstance();
  68         if(potential != null) {
  69             return potential;
  70         }
  71         RuntimeGeneratedMappingServiceImpl service = new RuntimeGeneratedMappingServiceImpl();
  72         service.setPool(SingletonHolder.CLASS_POOL);
  73         service.init();
  74         bundleContext.registerService(SchemaServiceListener.class, service, new Hashtable<String,String>());
  75         return service;
  76     }
  77
  78     private RuntimeGeneratedMappingServiceProxy tryToReuseGlobalInstance() {
  79         ServiceReference<BindingIndependentMappingService> serviceRef = getBundleContext().getServiceReference(BindingIndependentMappingService.class);
  80         if(serviceRef == null) {
  81             return null;
  82         }
  83
  84         BindingIndependentMappingService delegate = bundleContext.getService(serviceRef);
  85         if (delegate == null) {
  86             return null;
  87         }
  88         return new RuntimeGeneratedMappingServiceProxy(getBundleContext(),serviceRef,delegate);
  89     }
  90
  91     private BundleContext getBundleContext() {
  92         return bundleContext;
  93     }
  94
  95     public void setBundleContext(BundleContext bundleContext) {
  96         this.bundleContext = bundleContext;
  97     }
  98
  99     private static final class RuntimeGeneratedMappingServiceProxy implements //
 100     BindingIndependentMappingService, //
 101     Delegator<BindingIndependentMappingService>, //
 102     AutoCloseable {
 103
 104         private BindingIndependentMappingService delegate;
 105         private ServiceReference<BindingIndependentMappingService> reference;
 106         private BundleContext bundleContext;
 107
 108         public RuntimeGeneratedMappingServiceProxy(BundleContext bundleContext,
 109                 ServiceReference<BindingIndependentMappingService> serviceRef,
 110                 BindingIndependentMappingService delegate) {
 111             this.bundleContext = Preconditions.checkNotNull(bundleContext);
 112             this.reference = Preconditions.checkNotNull(serviceRef);
 113             this.delegate = Preconditions.checkNotNull(delegate);
 114         }
 115
 116         @Override
 117         public CodecRegistry getCodecRegistry() {
 118             return delegate.getCodecRegistry();
 119         }
 120
 121         @Override
 122         public CompositeNode toDataDom(DataObject data) {
 123             return delegate.toDataDom(data);
 124         }
 125
 126         @Override
 127         public Entry<InstanceIdentifier, CompositeNode> toDataDom(
 128                 Entry<org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject>, DataObject> entry) {
 129             return delegate.toDataDom(entry);
 130         }
 131
 132         @Override
 133         public InstanceIdentifier toDataDom(
 134                 org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject> path) {
 135             return delegate.toDataDom(path);
 136         }
 137
 138         @Override
 139         public DataObject dataObjectFromDataDom(
 140                 org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject> path,
 141                 CompositeNode result) throws DeserializationException {
 142             return delegate.dataObjectFromDataDom(path, result);
 143         }
 144
 145         @Override
 146         public org.opendaylight.yangtools.yang.binding.InstanceIdentifier<?> fromDataDom(InstanceIdentifier entry)
 147                 throws DeserializationException {
 148             return delegate.fromDataDom(entry);
 149         }
 150
 151         @Override
 152         public Set<QName> getRpcQNamesFor(Class<? extends RpcService> service) {
 153             return delegate.getRpcQNamesFor(service);
 154         }
 155
 156         @Override
 157         public DataContainer dataObjectFromDataDom(Class<? extends DataContainer> inputClass, CompositeNode domInput) {
 158             return delegate.dataObjectFromDataDom(inputClass, domInput);
 159         }
 160
 161         @Override
 162         public Optional<Class<? extends RpcService>> getRpcServiceClassFor(String namespace, String revision) {
 163             return delegate.getRpcServiceClassFor(namespace, revision);
 164         }
 165
 166         @Override
 167         public void close() throws Exception {
 168             if(delegate != null) {
 169                 delegate = null;
 170                 bundleContext.ungetService(reference);
 171                 bundleContext= null;
 172                 reference = null;
 173             }
 174         }
 175
 176         @Override
 177         public BindingIndependentMappingService getDelegate() {
 178             return delegate;
 179         }
 180     }
 181 }