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