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.mdsal.binding.dom.codec.impl;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkState;
12 import static com.google.common.base.Verify.verify;
13 import static java.util.Objects.requireNonNull;
15 import com.google.common.cache.CacheBuilder;
16 import com.google.common.cache.CacheLoader;
17 import com.google.common.cache.LoadingCache;
18 import com.google.common.collect.ImmutableMap;
19 import java.io.IOException;
20 import java.lang.reflect.Field;
21 import java.lang.reflect.Method;
22 import java.lang.reflect.ParameterizedType;
23 import java.lang.reflect.Type;
24 import java.util.AbstractMap.SimpleEntry;
25 import java.util.Collection;
26 import java.util.HashMap;
27 import java.util.LinkedList;
28 import java.util.List;
30 import java.util.Map.Entry;
31 import java.util.Optional;
32 import java.util.concurrent.Callable;
33 import java.util.concurrent.ExecutionException;
34 import org.eclipse.jdt.annotation.NonNull;
35 import org.eclipse.jdt.annotation.Nullable;
36 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
37 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeNode;
38 import org.opendaylight.mdsal.binding.dom.codec.api.BindingDataObjectCodecTreeNode;
39 import org.opendaylight.mdsal.binding.dom.codec.impl.NodeCodecContext.CodecContextFactory;
40 import org.opendaylight.mdsal.binding.dom.codec.loader.CodecClassLoader;
41 import org.opendaylight.mdsal.binding.dom.codec.util.BindingSchemaMapping;
42 import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
43 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
44 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
45 import org.opendaylight.yangtools.concepts.Codec;
46 import org.opendaylight.yangtools.concepts.Delegator;
47 import org.opendaylight.yangtools.concepts.Immutable;
48 import org.opendaylight.yangtools.util.ClassLoaderUtils;
49 import org.opendaylight.yangtools.yang.binding.Action;
50 import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
51 import org.opendaylight.yangtools.yang.binding.DataContainer;
52 import org.opendaylight.yangtools.yang.binding.DataObject;
53 import org.opendaylight.yangtools.yang.binding.DataObjectSerializer;
54 import org.opendaylight.yangtools.yang.binding.DataObjectSerializerRegistry;
55 import org.opendaylight.yangtools.yang.binding.Identifiable;
56 import org.opendaylight.yangtools.yang.binding.Identifier;
57 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
58 import org.opendaylight.yangtools.yang.binding.Notification;
59 import org.opendaylight.yangtools.yang.binding.OpaqueObject;
60 import org.opendaylight.yangtools.yang.common.QName;
61 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
62 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
63 import org.opendaylight.yangtools.yang.model.api.AnyDataSchemaNode;
64 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
65 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
66 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
67 import org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus;
68 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
69 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
70 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
71 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
72 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
73 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
74 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
75 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
76 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
77 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
78 import org.slf4j.Logger;
79 import org.slf4j.LoggerFactory;
81 final class BindingCodecContext implements CodecContextFactory, BindingCodecTree, DataObjectSerializerRegistry,
83 private final class DataObjectSerializerProxy implements DataObjectSerializer, Delegator<DataObjectStreamer<?>> {
84 private final @NonNull DataObjectStreamer<?> delegate;
86 DataObjectSerializerProxy(final DataObjectStreamer<?> delegate) {
87 this.delegate = requireNonNull(delegate);
91 public DataObjectStreamer<?> getDelegate() {
96 public void serialize(final DataObject obj, final BindingStreamEventWriter stream) throws IOException {
97 delegate.serialize(BindingCodecContext.this, obj, stream);
101 private static final Logger LOG = LoggerFactory.getLogger(BindingCodecContext.class);
103 private final LoadingCache<Class<?>, DataObjectStreamer<?>> streamers = CacheBuilder.newBuilder().build(
104 new CacheLoader<Class<?>, DataObjectStreamer<?>>() {
106 public DataObjectStreamer<?> load(final Class<?> key) throws ReflectiveOperationException {
107 final Class<?> streamer = DataObjectStreamerGenerator.generateStreamer(loader, BindingCodecContext.this,
109 final Field instance = streamer.getDeclaredField(DataObjectStreamerGenerator.INSTANCE_FIELD);
110 return (DataObjectStreamer<?>) instance.get(null);
113 private final LoadingCache<Class<?>, DataObjectSerializer> serializers = CacheBuilder.newBuilder().build(
114 new CacheLoader<Class<?>, DataObjectSerializer>() {
116 public DataObjectSerializer load(final Class<?> key) throws ExecutionException {
117 return new DataObjectSerializerProxy(streamers.get(key));
121 private final @NonNull CodecClassLoader loader = CodecClassLoader.create();
122 private final InstanceIdentifierCodec instanceIdentifierCodec;
123 private final @NonNull IdentityCodec identityCodec;
124 private final BindingNormalizedNodeCodecRegistry registry;
125 private final BindingRuntimeContext context;
126 private final SchemaRootCodecContext<?> root;
128 BindingCodecContext(final BindingRuntimeContext context, final BindingNormalizedNodeCodecRegistry registry) {
129 this.context = requireNonNull(context, "Binding Runtime Context is required.");
130 this.root = SchemaRootCodecContext.create(this);
131 this.identityCodec = new IdentityCodec(context);
132 this.instanceIdentifierCodec = new InstanceIdentifierCodec(this);
133 this.registry = requireNonNull(registry);
137 public BindingRuntimeContext getRuntimeContext() {
142 public CodecClassLoader getLoader() {
146 InstanceIdentifierCodec getInstanceIdentifierCodec() {
147 return instanceIdentifierCodec;
151 public IdentityCodec getIdentityCodec() {
152 return identityCodec;
155 @SuppressWarnings({"rawtypes", "unchecked"})
157 public DataObjectSerializer getEventStreamSerializer(final Class<?> type) {
158 return registry.getSerializer((Class) type);
162 public DataObjectStreamer<?> getDataObjectSerializer(final Class<?> type) {
163 return streamers.getUnchecked(type);
167 public DataObjectSerializer getSerializer(final Class<? extends DataObject> type) {
168 return serializers.getUnchecked(type);
171 public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriter(final InstanceIdentifier<?> path,
172 final NormalizedNodeStreamWriter domWriter) {
173 final List<YangInstanceIdentifier.PathArgument> yangArgs = new LinkedList<>();
174 final DataContainerCodecContext<?,?> codecContext = getCodecContextNode(path, yangArgs);
175 return new SimpleEntry<>(YangInstanceIdentifier.create(yangArgs), codecContext.createWriter(domWriter));
178 public BindingStreamEventWriter newWriterWithoutIdentifier(final InstanceIdentifier<?> path,
179 final NormalizedNodeStreamWriter domWriter) {
180 return getCodecContextNode(path, null).createWriter(domWriter);
183 BindingStreamEventWriter newRpcWriter(final Class<? extends DataContainer> rpcInputOrOutput,
184 final NormalizedNodeStreamWriter domWriter) {
185 return root.getRpc(rpcInputOrOutput).createWriter(domWriter);
188 BindingStreamEventWriter newNotificationWriter(final Class<? extends Notification> notification,
189 final NormalizedNodeStreamWriter domWriter) {
190 return root.getNotification(notification).createWriter(domWriter);
193 public DataContainerCodecContext<?,?> getCodecContextNode(final InstanceIdentifier<?> binding,
194 final List<YangInstanceIdentifier.PathArgument> builder) {
195 DataContainerCodecContext<?,?> currentNode = root;
196 for (final InstanceIdentifier.PathArgument bindingArg : binding.getPathArguments()) {
197 currentNode = currentNode.bindingPathArgumentChild(bindingArg, builder);
198 checkArgument(currentNode != null, "Supplied Instance Identifier %s is not valid.", binding);
204 * Multi-purpose utility function. Traverse the codec tree, looking for
205 * the appropriate codec for the specified {@link YangInstanceIdentifier}.
206 * As a side-effect, gather all traversed binding {@link InstanceIdentifier.PathArgument}s
207 * into the supplied collection.
209 * @param dom {@link YangInstanceIdentifier} which is to be translated
210 * @param bindingArguments Collection for traversed path arguments
211 * @return Codec for target node, or @null if the node does not have a
212 * binding representation (choice, case, leaf).
215 @Nullable BindingDataObjectCodecTreeNode<?> getCodecContextNode(final @NonNull YangInstanceIdentifier dom,
216 final @Nullable Collection<InstanceIdentifier.PathArgument> bindingArguments) {
217 NodeCodecContext currentNode = root;
218 ListNodeCodecContext<?> currentList = null;
220 for (final YangInstanceIdentifier.PathArgument domArg : dom.getPathArguments()) {
221 checkArgument(currentNode instanceof DataContainerCodecContext,
222 "Unexpected child of non-container node %s", currentNode);
223 final DataContainerCodecContext<?,?> previous = (DataContainerCodecContext<?, ?>) currentNode;
224 final NodeCodecContext nextNode = previous.yangPathArgumentChild(domArg);
227 * List representation in YANG Instance Identifier consists of two
228 * arguments: first is list as a whole, second is list as an item so
229 * if it is /list it means list as whole, if it is /list/list - it
230 * is wildcarded and if it is /list/list[key] it is concrete item,
231 * all this variations are expressed in Binding Aware Instance
232 * Identifier as Item or IdentifiableItem
234 if (currentList != null) {
235 checkArgument(currentList == nextNode,
236 "List should be referenced two times in YANG Instance Identifier %s", dom);
238 // We entered list, so now we have all information to emit
239 // list path using second list argument.
240 if (bindingArguments != null) {
241 bindingArguments.add(currentList.getBindingPathArgument(domArg));
244 currentNode = nextNode;
245 } else if (nextNode instanceof ListNodeCodecContext) {
246 // We enter list, we do not update current Node yet,
247 // since we need to verify
248 currentList = (ListNodeCodecContext<?>) nextNode;
249 } else if (nextNode instanceof ChoiceNodeCodecContext) {
250 // We do not add path argument for choice, since
251 // it is not supported by binding instance identifier.
252 currentNode = nextNode;
253 } else if (nextNode instanceof DataContainerCodecContext) {
254 if (bindingArguments != null) {
255 bindingArguments.add(((DataContainerCodecContext<?, ?>) nextNode).getBindingPathArgument(domArg));
257 currentNode = nextNode;
258 } else if (nextNode instanceof ValueNodeCodecContext) {
259 LOG.debug("Instance identifier referencing a leaf is not representable ({})", dom);
264 // Algorithm ended in list as whole representation
265 // we sill need to emit identifier for list
266 if (currentNode instanceof ChoiceNodeCodecContext) {
267 LOG.debug("Instance identifier targeting a choice is not representable ({})", dom);
270 if (currentNode instanceof CaseNodeCodecContext) {
271 LOG.debug("Instance identifier targeting a case is not representable ({})", dom);
275 if (currentList != null) {
276 if (bindingArguments != null) {
277 bindingArguments.add(currentList.getBindingPathArgument(null));
281 if (currentNode != null) {
282 verify(currentNode instanceof BindingDataObjectCodecTreeNode, "Illegal return node %s for identifier %s",
284 return (BindingDataObjectCodecTreeNode<?>) currentNode;
289 NotificationCodecContext<?> getNotificationContext(final SchemaPath notification) {
290 return root.getNotification(notification);
293 RpcInputCodec<?> getRpcInputCodec(final SchemaPath path) {
294 return root.getRpc(path);
297 ActionCodecContext getActionCodec(final Class<? extends Action<?, ?, ?>> action) {
298 return root.getAction(action);
302 public ImmutableMap<Method, ValueNodeCodecContext> getLeafNodes(final Class<?> parentClass,
303 final DataNodeContainer childSchema) {
304 final Map<String, DataSchemaNode> getterToLeafSchema = new HashMap<>();
305 for (final DataSchemaNode leaf : childSchema.getChildNodes()) {
306 if (leaf instanceof TypedDataSchemaNode || leaf instanceof AnyXmlSchemaNode
307 || leaf instanceof AnyDataSchemaNode) {
308 getterToLeafSchema.put(BindingSchemaMapping.getGetterMethodName(leaf), leaf);
311 return getLeafNodesUsingReflection(parentClass, getterToLeafSchema);
314 private ImmutableMap<Method, ValueNodeCodecContext> getLeafNodesUsingReflection(
315 final Class<?> parentClass, final Map<String, DataSchemaNode> getterToLeafSchema) {
316 final Map<Method, ValueNodeCodecContext> leaves = new HashMap<>();
317 for (final Method method : parentClass.getMethods()) {
318 if (method.getParameterCount() == 0) {
319 final DataSchemaNode schema = getterToLeafSchema.get(method.getName());
321 final ValueNodeCodecContext valueNode;
322 if (schema instanceof LeafSchemaNode) {
323 final LeafSchemaNode leafSchema = (LeafSchemaNode) schema;
325 final Class<?> valueType = method.getReturnType();
326 final Codec<Object, Object> codec = getCodec(valueType, leafSchema.getType());
327 valueNode = LeafNodeCodecContext.of(leafSchema, codec, method.getName(), valueType,
328 context.getSchemaContext());
329 } else if (schema instanceof LeafListSchemaNode) {
330 final Optional<Type> optType = ClassLoaderUtils.getFirstGenericParameter(
331 method.getGenericReturnType());
332 checkState(optType.isPresent(), "Failed to find return type for %s", method);
334 final Class<?> valueType;
335 final Type genericType = optType.get();
336 if (genericType instanceof Class<?>) {
337 valueType = (Class<?>) genericType;
338 } else if (genericType instanceof ParameterizedType) {
339 valueType = (Class<?>) ((ParameterizedType) genericType).getRawType();
341 throw new IllegalStateException("Unexpected return type " + genericType);
344 final LeafListSchemaNode leafListSchema = (LeafListSchemaNode) schema;
345 final Codec<Object, Object> codec = getCodec(valueType, leafListSchema.getType());
346 valueNode = new LeafSetNodeCodecContext(leafListSchema, codec, method.getName());
347 } else if (schema instanceof AnyXmlSchemaNode) {
348 valueNode = new OpaqueNodeCodecContext.AnyXml<>((AnyXmlSchemaNode) schema, method.getName(),
349 opaqueReturnType(method), loader);
350 } else if (schema instanceof AnyDataSchemaNode) {
351 valueNode = new OpaqueNodeCodecContext.AnyData<>((AnyDataSchemaNode) schema, method.getName(),
352 opaqueReturnType(method), loader);
354 verify(schema == null, "Unhandled schema %s for method %s", schema, method);
355 // We do not have schema for leaf, so we will ignore it (e.g. getClass).
359 leaves.put(method, valueNode);
362 return ImmutableMap.copyOf(leaves);
365 Codec<Object, Object> getCodec(final Class<?> valueType, final TypeDefinition<?> instantiatedType) {
366 if (Class.class.equals(valueType)) {
367 @SuppressWarnings({ "unchecked", "rawtypes" })
368 final Codec<Object, Object> casted = (Codec) identityCodec;
370 } else if (InstanceIdentifier.class.equals(valueType)) {
371 @SuppressWarnings({ "unchecked", "rawtypes" })
372 final Codec<Object, Object> casted = (Codec) instanceIdentifierCodec;
374 } else if (BindingReflections.isBindingClass(valueType)) {
375 return getCodecForBindingClass(valueType, instantiatedType);
377 return ValueTypeCodec.NOOP_CODEC;
380 @SuppressWarnings("checkstyle:illegalCatch")
381 private Codec<Object, Object> getCodecForBindingClass(final Class<?> valueType, final TypeDefinition<?> typeDef) {
382 if (typeDef instanceof IdentityrefTypeDefinition) {
383 return ValueTypeCodec.encapsulatedValueCodecFor(valueType, typeDef, identityCodec);
384 } else if (typeDef instanceof InstanceIdentifierTypeDefinition) {
385 return ValueTypeCodec.encapsulatedValueCodecFor(valueType, typeDef, instanceIdentifierCodec);
386 } else if (typeDef instanceof UnionTypeDefinition) {
387 final Callable<UnionTypeCodec> unionLoader = UnionTypeCodec.loader(valueType, (UnionTypeDefinition) typeDef,
390 return unionLoader.call();
391 } catch (final Exception e) {
392 throw new IllegalStateException("Unable to load codec for " + valueType, e);
394 } else if (typeDef instanceof LeafrefTypeDefinition) {
395 final Entry<GeneratedType, WithStatus> typeWithSchema = context.getTypeWithSchema(valueType);
396 final WithStatus schema = typeWithSchema.getValue();
397 checkState(schema instanceof TypeDefinition);
398 return getCodec(valueType, (TypeDefinition<?>) schema);
400 return ValueTypeCodec.getCodecFor(valueType, typeDef);
404 public IdentifiableItemCodec getPathArgumentCodec(final Class<?> listClz, final ListSchemaNode schema) {
405 final Optional<Class<Identifier<?>>> optIdentifier = ClassLoaderUtils.findFirstGenericArgument(listClz,
407 checkState(optIdentifier.isPresent(), "Failed to find identifier for %s", listClz);
409 final Class<Identifier<?>> identifier = optIdentifier.get();
410 final Map<QName, ValueContext> valueCtx = new HashMap<>();
411 for (final ValueNodeCodecContext leaf : getLeafNodes(identifier, schema).values()) {
412 final QName name = leaf.getDomPathArgument().getNodeType();
413 valueCtx.put(name, new ValueContext(identifier, leaf));
415 return IdentifiableItemCodec.of(schema, identifier, listClz, valueCtx);
418 @SuppressWarnings("unchecked")
420 public <T extends DataObject> BindingDataObjectCodecTreeNode<T> getSubtreeCodec(final InstanceIdentifier<T> path) {
421 // TODO Do we need defensive check here?
422 return (BindingDataObjectCodecTreeNode<T>) getCodecContextNode(path, null);
426 public BindingCodecTreeNode getSubtreeCodec(final YangInstanceIdentifier path) {
427 return getCodecContextNode(path, null);
431 public BindingCodecTreeNode getSubtreeCodec(final SchemaPath path) {
432 throw new UnsupportedOperationException("Not implemented yet.");
435 @SuppressWarnings("rawtypes")
436 private static Class<? extends OpaqueObject> opaqueReturnType(final Method method) {
437 final Class<?> valueType = method.getReturnType();
438 verify(OpaqueObject.class.isAssignableFrom(valueType), "Illegal value type %s", valueType);
439 return valueType.asSubclass(OpaqueObject.class);