code-generator/binding-data-codec/src/main/java/org/opendaylight/yangtools/binding/data/codec/impl/BindingNormalizedNodeCodecRegistry.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.yangtools.binding.data.codec.impl;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.cache.CacheBuilder;
  12 import com.google.common.cache.CacheLoader;
  13 import com.google.common.cache.LoadingCache;
  14
  15 import java.util.AbstractMap.SimpleEntry;
  16 import java.util.LinkedList;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Map.Entry;
  20
  21 import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeSerializer;
  22 import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeWriterFactory;
  23 import org.opendaylight.yangtools.binding.data.codec.gen.impl.DataObjectSerializerGenerator;
  24 import org.opendaylight.yangtools.concepts.Delegator;
  25 import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
  26 import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
  27 import org.opendaylight.yangtools.yang.binding.DataObject;
  28 import org.opendaylight.yangtools.yang.binding.DataObjectSerializer;
  29 import org.opendaylight.yangtools.yang.binding.DataObjectSerializerImplementation;
  30 import org.opendaylight.yangtools.yang.binding.DataObjectSerializerRegistry;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  33 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  34 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  35 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
  36 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
  37
  38 public class BindingNormalizedNodeCodecRegistry implements DataObjectSerializerRegistry, BindingNormalizedNodeWriterFactory, BindingNormalizedNodeSerializer {
  39
  40     private final DataObjectSerializerGenerator generator;
  41     private final LoadingCache<Class<? extends DataObject>, DataObjectSerializer> serializers;
  42     private BindingCodecContext codecContext;
  43
  44     public BindingNormalizedNodeCodecRegistry(final DataObjectSerializerGenerator generator) {
  45         this.generator = Preconditions.checkNotNull(generator);
  46         this.serializers = CacheBuilder.newBuilder().weakKeys().build(new GeneratorLoader());
  47     }
  48
  49     @Override
  50     public DataObjectSerializer getSerializer(final Class<? extends DataObject> type) {
  51         return serializers.getUnchecked(type);
  52     }
  53
  54     public BindingCodecContext getCodecContext() {
  55         return codecContext;
  56     }
  57
  58     public void onBindingRuntimeContextUpdated(final BindingRuntimeContext context) {
  59         codecContext = new BindingCodecContext(context);
  60         generator.onBindingRuntimeContextUpdated(context);
  61     }
  62
  63
  64     @Override
  65     public YangInstanceIdentifier toYangInstanceIdentifier(final InstanceIdentifier<?> binding) {
  66         List<YangInstanceIdentifier.PathArgument> builder = new LinkedList<>();
  67         codecContext.getCodecContextNode(binding, builder);
  68         return codecContext.getInstanceIdentifierCodec().serialize(binding);
  69     }
  70
  71     @Override
  72     public InstanceIdentifier<?> fromYangInstanceIdentifier(final YangInstanceIdentifier dom) {
  73         return codecContext.getInstanceIdentifierCodec().deserialize(dom);
  74    }
  75
  76     @Override
  77     public <T extends DataObject> Entry<YangInstanceIdentifier,NormalizedNode<?,?>> toNormalizedNode(final InstanceIdentifier<T> path, final T data) {
  78         NormalizedNodeResult result = new NormalizedNodeResult();
  79         // We create dom stream writer which produces normalized nodes
  80         NormalizedNodeStreamWriter domWriter = ImmutableNormalizedNodeStreamWriter.from(result);
  81
  82         // We create Binding Stream Writer wchich translates from Binding to Normalized Nodes
  83         Entry<YangInstanceIdentifier, BindingStreamEventWriter> writeCtx = codecContext.newWriter(path, domWriter);
  84
  85         // We get serializer which reads binding data and uses Binding To NOrmalized Node writer to write result
  86         getSerializer(path.getTargetType()).serialize(data, writeCtx.getValue());
  87         return new SimpleEntry<YangInstanceIdentifier,NormalizedNode<?,?>>(writeCtx.getKey(),result.getResult());
  88     }
  89
  90     @Override
  91     public Entry<InstanceIdentifier<?>, DataObject> fromNormalizedNode(final YangInstanceIdentifier path,
  92             final NormalizedNode<?, ?> data) {
  93         throw new UnsupportedOperationException("Not implemented yet");
  94     }
  95
  96     @Override
  97     public Map<InstanceIdentifier<?>, DataObject> fromNormalizedNodes(
  98             final Map<YangInstanceIdentifier, NormalizedNode<?, ?>> dom) {
  99         throw new UnsupportedOperationException("Not implemented yet");
 100     }
 101
 102     @Override
 103     public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriterAndIdentifier(final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
 104         return codecContext.newWriter(path, domWriter);
 105     }
 106
 107     @Override
 108     public BindingStreamEventWriter newWriter(final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
 109         return codecContext.newWriterWithoutIdentifier(path, domWriter);
 110     }
 111
 112     private class GeneratorLoader extends CacheLoader<Class<? extends DataObject>, DataObjectSerializer> {
 113
 114         @Override
 115         public DataObjectSerializer load(final Class<? extends DataObject> key) throws Exception {
 116             DataObjectSerializerImplementation prototype = generator.getSerializer(key);
 117             return new DataObjectSerializerProxy(prototype);
 118         }
 119     }
 120
 121     private class DataObjectSerializerProxy implements DataObjectSerializer,
 122             Delegator<DataObjectSerializerImplementation> {
 123
 124         private final DataObjectSerializerImplementation delegate;
 125
 126         DataObjectSerializerProxy(final DataObjectSerializerImplementation delegate) {
 127             this.delegate = delegate;
 128         }
 129
 130         @Override
 131         public DataObjectSerializerImplementation getDelegate() {
 132             return delegate;
 133         }
 134
 135         @Override
 136         public void serialize(final DataObject obj, final BindingStreamEventWriter stream) {
 137             delegate.serialize(BindingNormalizedNodeCodecRegistry.this, obj, stream);
 138         }
 139     }
 140
 141 }