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.Function;
  11 import com.google.common.base.Optional;
  12 import com.google.common.base.Preconditions;
  13 import com.google.common.cache.CacheBuilder;
  14 import com.google.common.cache.CacheLoader;
  15 import com.google.common.cache.LoadingCache;
  16
  17 import java.io.IOException;
  18 import java.util.AbstractMap.SimpleEntry;
  19 import java.util.LinkedList;
  20 import java.util.List;
  21 import java.util.Map;
  22 import java.util.Map.Entry;
  23
  24 import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeSerializer;
  25 import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeWriterFactory;
  26 import org.opendaylight.yangtools.binding.data.codec.gen.impl.DataObjectSerializerGenerator;
  27 import org.opendaylight.yangtools.concepts.Delegator;
  28 import org.opendaylight.yangtools.sal.binding.generator.util.BindingRuntimeContext;
  29 import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
  30 import org.opendaylight.yangtools.yang.binding.DataObject;
  31 import org.opendaylight.yangtools.yang.binding.DataObjectSerializer;
  32 import org.opendaylight.yangtools.yang.binding.DataObjectSerializerImplementation;
  33 import org.opendaylight.yangtools.yang.binding.DataObjectSerializerRegistry;
  34 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  35 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.PathArgument;
  36 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  37 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
  38 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
  39 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  40 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  41 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  42 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
  43 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
  44 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 public class BindingNormalizedNodeCodecRegistry implements DataObjectSerializerRegistry, BindingNormalizedNodeWriterFactory, BindingNormalizedNodeSerializer {
  49     private static final Logger LOG = LoggerFactory.getLogger(BindingNormalizedNodeCodecRegistry.class);
  50
  51     private final DataObjectSerializerGenerator generator;
  52     private final LoadingCache<Class<? extends DataObject>, DataObjectSerializer> serializers;
  53     private BindingCodecContext codecContext;
  54
  55     public BindingNormalizedNodeCodecRegistry(final DataObjectSerializerGenerator generator) {
  56         this.generator = Preconditions.checkNotNull(generator);
  57         this.serializers = CacheBuilder.newBuilder().weakKeys().build(new GeneratorLoader());
  58     }
  59
  60     @Override
  61     public DataObjectSerializer getSerializer(final Class<? extends DataObject> type) {
  62         return serializers.getUnchecked(type);
  63     }
  64
  65     public BindingCodecContext getCodecContext() {
  66         return codecContext;
  67     }
  68
  69     public void onBindingRuntimeContextUpdated(final BindingRuntimeContext context) {
  70         codecContext = new BindingCodecContext(context);
  71         generator.onBindingRuntimeContextUpdated(context);
  72     }
  73
  74
  75     @Override
  76     public YangInstanceIdentifier toYangInstanceIdentifier(final InstanceIdentifier<?> binding) {
  77         List<YangInstanceIdentifier.PathArgument> builder = new LinkedList<>();
  78         codecContext.getCodecContextNode(binding, builder);
  79         return codecContext.getInstanceIdentifierCodec().serialize(binding);
  80     }
  81
  82     @Override
  83     public InstanceIdentifier<?> fromYangInstanceIdentifier(final YangInstanceIdentifier dom) {
  84         return codecContext.getInstanceIdentifierCodec().deserialize(dom);
  85    }
  86
  87     @Override
  88     public <T extends DataObject> Entry<YangInstanceIdentifier,NormalizedNode<?,?>> toNormalizedNode(final InstanceIdentifier<T> path, final T data) {
  89         NormalizedNodeResult result = new NormalizedNodeResult();
  90         // We create dom stream writer which produces normalized nodes
  91         NormalizedNodeStreamWriter domWriter = ImmutableNormalizedNodeStreamWriter.from(result);
  92
  93         // We create Binding Stream Writer wchich translates from Binding to Normalized Nodes
  94         Entry<YangInstanceIdentifier, BindingStreamEventWriter> writeCtx = codecContext.newWriter(path, domWriter);
  95
  96         // We get serializer which reads binding data and uses Binding To Normalized Node writer to write result
  97         try {
  98             getSerializer(path.getTargetType()).serialize(data, writeCtx.getValue());
  99         } catch (IOException e) {
 100             LOG.error("Unexpected failure while serializing path {} data {}", path, data, e);
 101             throw new IllegalStateException("Failed to create normalized node", e);
 102         }
 103         return new SimpleEntry<YangInstanceIdentifier,NormalizedNode<?,?>>(writeCtx.getKey(),result.getResult());
 104     }
 105
 106     private boolean isBindingRepresentable(final NormalizedNode<?, ?> data) {
 107         return !(data instanceof MapNode) && !(data instanceof UnkeyedListNode) && !(data instanceof LeafSetNode) && !(data instanceof LeafNode<?>);
 108     }
 109
 110
 111     @Override
 112     public Entry<InstanceIdentifier<?>, DataObject> fromNormalizedNode(final YangInstanceIdentifier path,
 113             final NormalizedNode<?, ?> data) {
 114         List<PathArgument> builder = new LinkedList<>();
 115         if(isBindingRepresentable(data)) {
 116             DataObject lazyObj = (DataObject) codecContext.getCodecContextNode(path, builder).dataFromNormalizedNode(data);
 117             InstanceIdentifier<?> bindingPath = InstanceIdentifier.create(builder);
 118             return new SimpleEntry<InstanceIdentifier<?>, DataObject>(bindingPath,lazyObj);
 119         }
 120         return null;
 121     }
 122
 123     @Override
 124     public Map<InstanceIdentifier<?>, DataObject> fromNormalizedNodes(
 125             final Map<YangInstanceIdentifier, NormalizedNode<?, ?>> dom) {
 126         throw new UnsupportedOperationException("Not implemented yet");
 127     }
 128
 129     @Override
 130     public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriterAndIdentifier(final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
 131         return codecContext.newWriter(path, domWriter);
 132     }
 133
 134     @Override
 135     public BindingStreamEventWriter newWriter(final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
 136         return codecContext.newWriterWithoutIdentifier(path, domWriter);
 137     }
 138
 139
 140     public <T extends DataObject> Function<Optional<NormalizedNode<?, ?>>, Optional<T>>  deserializeFunction(final InstanceIdentifier<T> path) {
 141         DataObjectCodecContext<?> ctx = (DataObjectCodecContext<?>) codecContext.getCodecContextNode(path, null);
 142         return new DeserializeFunction<T>(ctx);
 143     }
 144
 145
 146     private static class DeserializeFunction<T> implements Function<Optional<NormalizedNode<?, ?>>, Optional<T>> {
 147
 148         private final DataObjectCodecContext<?> ctx;
 149         public DeserializeFunction(final DataObjectCodecContext<?> ctx) {
 150             super();
 151             this.ctx = ctx;
 152         }
 153
 154         @SuppressWarnings("unchecked")
 155         @Override
 156         public Optional<T> apply(final Optional<NormalizedNode<?, ?>> input) {
 157             if(input.isPresent()) {
 158                 return Optional.of((T) ctx.dataFromNormalizedNode(input.get()));
 159             }
 160             return Optional.absent();
 161         }
 162
 163
 164     }
 165
 166     private class GeneratorLoader extends CacheLoader<Class<? extends DataObject>, DataObjectSerializer> {
 167
 168         @Override
 169         public DataObjectSerializer load(final Class<? extends DataObject> key) throws Exception {
 170             DataObjectSerializerImplementation prototype = generator.getSerializer(key);
 171             return new DataObjectSerializerProxy(prototype);
 172         }
 173     }
 174
 175     private class DataObjectSerializerProxy implements DataObjectSerializer,
 176             Delegator<DataObjectSerializerImplementation> {
 177
 178         private final DataObjectSerializerImplementation delegate;
 179
 180         DataObjectSerializerProxy(final DataObjectSerializerImplementation delegate) {
 181             this.delegate = delegate;
 182         }
 183
 184         @Override
 185         public DataObjectSerializerImplementation getDelegate() {
 186             return delegate;
 187         }
 188
 189         @Override
 190         public void serialize(final DataObject obj, final BindingStreamEventWriter stream) throws IOException {
 191             delegate.serialize(BindingNormalizedNodeCodecRegistry.this, obj, stream);
 192         }
 193     }
 194
 195 }