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
  72         final RuntimeGeneratedMappingServiceImpl service = new RuntimeGeneratedMappingServiceImpl(SingletonHolder.CLASS_POOL);
  73         bundleContext.registerService(SchemaServiceListener.class, service, new Hashtable<String,String>());
  74         return service;
  75     }
  76
  77     private RuntimeGeneratedMappingServiceProxy tryToReuseGlobalInstance() {
  78         ServiceReference<BindingIndependentMappingService> serviceRef = getBundleContext().getServiceReference(BindingIndependentMappingService.class);
  79         if(serviceRef == null) {
  80             return null;
  81         }
  82
  83         BindingIndependentMappingService delegate = bundleContext.getService(serviceRef);
  84         if (delegate == null) {
  85             return null;
  86         }
  87         return new RuntimeGeneratedMappingServiceProxy(getBundleContext(),serviceRef,delegate);
  88     }
  89
  90     private BundleContext getBundleContext() {
  91         return bundleContext;
  92     }
  93
  94     public void setBundleContext(BundleContext bundleContext) {
  95         this.bundleContext = bundleContext;
  96     }
  97
  98     private static final class RuntimeGeneratedMappingServiceProxy implements //
  99     BindingIndependentMappingService, //
 100     Delegator<BindingIndependentMappingService>, //
 101     AutoCloseable {
 102
 103         private BindingIndependentMappingService delegate;
 104         private ServiceReference<BindingIndependentMappingService> reference;
 105         private BundleContext bundleContext;
 106
 107         public RuntimeGeneratedMappingServiceProxy(BundleContext bundleContext,
 108                 ServiceReference<BindingIndependentMappingService> serviceRef,
 109                 BindingIndependentMappingService delegate) {
 110             this.bundleContext = Preconditions.checkNotNull(bundleContext);
 111             this.reference = Preconditions.checkNotNull(serviceRef);
 112             this.delegate = Preconditions.checkNotNull(delegate);
 113         }
 114
 115         @Override
 116         public CodecRegistry getCodecRegistry() {
 117             return delegate.getCodecRegistry();
 118         }
 119
 120         @Override
 121         public CompositeNode toDataDom(DataObject data) {
 122             return delegate.toDataDom(data);
 123         }
 124
 125         @Override
 126         public Entry<InstanceIdentifier, CompositeNode> toDataDom(
 127                 Entry<org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject>, DataObject> entry) {
 128             return delegate.toDataDom(entry);
 129         }
 130
 131         @Override
 132         public InstanceIdentifier toDataDom(
 133                 org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject> path) {
 134             return delegate.toDataDom(path);
 135         }
 136
 137         @Override
 138         public DataObject dataObjectFromDataDom(
 139                 org.opendaylight.yangtools.yang.binding.InstanceIdentifier<? extends DataObject> path,
 140                 CompositeNode result) throws DeserializationException {
 141             return delegate.dataObjectFromDataDom(path, result);
 142         }
 143
 144         @Override
 145         public org.opendaylight.yangtools.yang.binding.InstanceIdentifier<?> fromDataDom(InstanceIdentifier entry)
 146                 throws DeserializationException {
 147             return delegate.fromDataDom(entry);
 148         }
 149
 150         @Override
 151         public Set<QName> getRpcQNamesFor(Class<? extends RpcService> service) {
 152             return delegate.getRpcQNamesFor(service);
 153         }
 154
 155         @Override
 156         public Optional<Class<? extends RpcService>> getRpcServiceClassFor(String namespace, String revision) {
 157             return delegate.getRpcServiceClassFor(namespace,revision);
 158         }
 159
 160         @Override
 161         public DataContainer dataObjectFromDataDom(Class<? extends DataContainer> inputClass, CompositeNode domInput) {
 162             return delegate.dataObjectFromDataDom(inputClass, domInput);
 163         }
 164
 165         @Override
 166         public void close() throws Exception {
 167             if(delegate != null) {
 168                 delegate = null;
 169                 bundleContext.ungetService(reference);
 170                 bundleContext= null;
 171                 reference = null;
 172             }
 173         }
 174
 175         @Override
 176         public BindingIndependentMappingService getDelegate() {
 177             return delegate;
 178         }
 179     }
 180 }