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