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