2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.yangtools.binding.data.codec.impl;
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;
17 import java.io.IOException;
18 import java.util.AbstractMap.SimpleEntry;
19 import java.util.ArrayList;
20 import java.util.List;
22 import java.util.Map.Entry;
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.ChoiceNode;
38 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
39 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
40 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
41 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
42 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
43 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
44 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
45 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
46 import org.slf4j.Logger;
47 import org.slf4j.LoggerFactory;
49 public class BindingNormalizedNodeCodecRegistry implements DataObjectSerializerRegistry, BindingNormalizedNodeWriterFactory, BindingNormalizedNodeSerializer {
50 private static final Logger LOG = LoggerFactory.getLogger(BindingNormalizedNodeCodecRegistry.class);
52 private final DataObjectSerializerGenerator generator;
53 private final LoadingCache<Class<? extends DataObject>, DataObjectSerializer> serializers;
54 private BindingCodecContext codecContext;
56 public BindingNormalizedNodeCodecRegistry(final DataObjectSerializerGenerator generator) {
57 this.generator = Preconditions.checkNotNull(generator);
58 this.serializers = CacheBuilder.newBuilder().weakKeys().build(new GeneratorLoader());
62 public DataObjectSerializer getSerializer(final Class<? extends DataObject> type) {
63 return serializers.getUnchecked(type);
66 public BindingCodecContext getCodecContext() {
70 public void onBindingRuntimeContextUpdated(final BindingRuntimeContext context) {
71 codecContext = new BindingCodecContext(context);
72 generator.onBindingRuntimeContextUpdated(context);
77 public YangInstanceIdentifier toYangInstanceIdentifier(final InstanceIdentifier<?> binding) {
78 return codecContext.getInstanceIdentifierCodec().serialize(binding);
82 public InstanceIdentifier<?> fromYangInstanceIdentifier(final YangInstanceIdentifier dom) {
83 return codecContext.getInstanceIdentifierCodec().deserialize(dom);
87 public <T extends DataObject> Entry<YangInstanceIdentifier,NormalizedNode<?,?>> toNormalizedNode(final InstanceIdentifier<T> path, final T data) {
88 NormalizedNodeResult result = new NormalizedNodeResult();
89 // We create DOM stream writer which produces normalized nodes
90 NormalizedNodeStreamWriter domWriter = ImmutableNormalizedNodeStreamWriter.from(result);
92 // We create Binding Stream Writer which translates from Binding to Normalized Nodes
93 Entry<YangInstanceIdentifier, BindingStreamEventWriter> writeCtx = codecContext.newWriter(path, domWriter);
95 // We get serializer which reads binding data and uses Binding To Normalized Node writer to write result
97 getSerializer(path.getTargetType()).serialize(data, writeCtx.getValue());
98 } catch (IOException e) {
99 LOG.error("Unexpected failure while serializing path {} data {}", path, data, e);
100 throw new IllegalStateException("Failed to create normalized node", e);
102 return new SimpleEntry<YangInstanceIdentifier,NormalizedNode<?,?>>(writeCtx.getKey(),result.getResult());
105 private static boolean isBindingRepresentable(final NormalizedNode<?, ?> data) {
106 if (data instanceof ChoiceNode) {
109 if (data instanceof LeafNode<?>) {
112 if (data instanceof LeafSetNode) {
115 if (data instanceof MapNode) {
118 if (data instanceof UnkeyedListNode) {
126 public Entry<InstanceIdentifier<?>, DataObject> fromNormalizedNode(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
127 if (!isBindingRepresentable(data)) {
131 final List<PathArgument> builder = new ArrayList<>();
132 final NodeCodecContext codec = codecContext.getCodecContextNode(path, builder);
135 LOG.warn("Path {} does not have a binding equivalent, should have been caught earlier ({})", path, data.getClass());
140 final DataObject lazyObj = (DataObject) codec.dataFromNormalizedNode(data);
141 final InstanceIdentifier<?> bindingPath = InstanceIdentifier.create(builder);
142 return new SimpleEntry<InstanceIdentifier<?>, DataObject>(bindingPath, lazyObj);
146 public Map<InstanceIdentifier<?>, DataObject> fromNormalizedNodes(final Map<YangInstanceIdentifier, NormalizedNode<?, ?>> dom) {
147 throw new UnsupportedOperationException("Not implemented yet");
151 public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriterAndIdentifier(final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
152 return codecContext.newWriter(path, domWriter);
156 public BindingStreamEventWriter newWriter(final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
157 return codecContext.newWriterWithoutIdentifier(path, domWriter);
161 public <T extends DataObject> Function<Optional<NormalizedNode<?, ?>>, Optional<T>> deserializeFunction(final InstanceIdentifier<T> path) {
162 DataObjectCodecContext<?> ctx = (DataObjectCodecContext<?>) codecContext.getCodecContextNode(path, null);
163 return new DeserializeFunction<T>(ctx);
167 private static class DeserializeFunction<T> implements Function<Optional<NormalizedNode<?, ?>>, Optional<T>> {
168 private final DataObjectCodecContext<?> ctx;
170 public DeserializeFunction(final DataObjectCodecContext<?> ctx) {
175 @SuppressWarnings("unchecked")
177 public Optional<T> apply(final Optional<NormalizedNode<?, ?>> input) {
178 if(input.isPresent()) {
179 return Optional.of((T) ctx.dataFromNormalizedNode(input.get()));
181 return Optional.absent();
185 private class GeneratorLoader extends CacheLoader<Class<? extends DataObject>, DataObjectSerializer> {
188 public DataObjectSerializer load(final Class<? extends DataObject> key) throws Exception {
189 DataObjectSerializerImplementation prototype = generator.getSerializer(key);
190 return new DataObjectSerializerProxy(prototype);
194 private class DataObjectSerializerProxy implements DataObjectSerializer,
195 Delegator<DataObjectSerializerImplementation> {
197 private final DataObjectSerializerImplementation delegate;
199 DataObjectSerializerProxy(final DataObjectSerializerImplementation delegate) {
200 this.delegate = delegate;
204 public DataObjectSerializerImplementation getDelegate() {
209 public void serialize(final DataObject obj, final BindingStreamEventWriter stream) throws IOException {
210 delegate.serialize(BindingNormalizedNodeCodecRegistry.this, obj, stream);