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 com.google.common.base.Preconditions;
11 import com.google.common.collect.ImmutableMap;
12 import java.lang.reflect.Method;
13 import java.lang.reflect.ParameterizedType;
14 import java.lang.reflect.Type;
15 import java.util.AbstractMap.SimpleEntry;
16 import java.util.Collection;
17 import java.util.HashMap;
18 import java.util.LinkedList;
19 import java.util.List;
21 import java.util.Map.Entry;
22 import java.util.concurrent.Callable;
23 import javax.annotation.Nonnull;
24 import javax.annotation.Nullable;
25 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
26 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeNode;
27 import org.opendaylight.mdsal.binding.dom.codec.impl.NodeCodecContext.CodecContextFactory;
28 import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
29 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
30 import org.opendaylight.yangtools.concepts.Codec;
31 import org.opendaylight.yangtools.concepts.Immutable;
32 import org.opendaylight.yangtools.util.ClassLoaderUtils;
33 import org.opendaylight.yangtools.yang.binding.BindingMapping;
34 import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
35 import org.opendaylight.yangtools.yang.binding.DataContainer;
36 import org.opendaylight.yangtools.yang.binding.DataObject;
37 import org.opendaylight.yangtools.yang.binding.DataObjectSerializer;
38 import org.opendaylight.yangtools.yang.binding.Identifiable;
39 import org.opendaylight.yangtools.yang.binding.Identifier;
40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
41 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.IdentifiableItem;
42 import org.opendaylight.yangtools.yang.binding.Notification;
43 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
44 import org.opendaylight.yangtools.yang.common.QName;
45 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
46 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
47 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
48 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
49 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
50 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
51 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
52 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
53 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
54 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
55 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
56 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
57 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
58 import org.opendaylight.yangtools.yang.model.api.type.EmptyTypeDefinition;
59 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
60 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
61 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
62 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
63 import org.slf4j.Logger;
64 import org.slf4j.LoggerFactory;
66 final class BindingCodecContext implements CodecContextFactory, BindingCodecTree, Immutable {
67 private static final Logger LOG = LoggerFactory.getLogger(BindingCodecContext.class);
69 private final Codec<YangInstanceIdentifier, InstanceIdentifier<?>> instanceIdentifierCodec;
70 private final Codec<QName, Class<?>> identityCodec;
71 private final BindingNormalizedNodeCodecRegistry registry;
72 private final BindingRuntimeContext context;
73 private final SchemaRootCodecContext<?> root;
75 BindingCodecContext(final BindingRuntimeContext context, final BindingNormalizedNodeCodecRegistry registry) {
76 this.context = Preconditions.checkNotNull(context, "Binding Runtime Context is required.");
77 this.root = SchemaRootCodecContext.create(this);
78 this.identityCodec = new IdentityCodec(context);
79 this.instanceIdentifierCodec = new InstanceIdentifierCodec(this);
80 this.registry = Preconditions.checkNotNull(registry);
84 public BindingRuntimeContext getRuntimeContext() {
88 Codec<YangInstanceIdentifier, InstanceIdentifier<?>> getInstanceIdentifierCodec() {
89 return instanceIdentifierCodec;
92 public Codec<QName, Class<?>> getIdentityCodec() {
96 @SuppressWarnings({"rawtypes", "unchecked"})
98 public DataObjectSerializer getEventStreamSerializer(final Class<?> type) {
99 return registry.getSerializer((Class) type);
102 public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriter(final InstanceIdentifier<?> path,
103 final NormalizedNodeStreamWriter domWriter) {
104 final List<YangInstanceIdentifier.PathArgument> yangArgs = new LinkedList<>();
105 final DataContainerCodecContext<?,?> codecContext = getCodecContextNode(path, yangArgs);
106 return new SimpleEntry<>(YangInstanceIdentifier.create(yangArgs), codecContext.createWriter(domWriter));
109 public BindingStreamEventWriter newWriterWithoutIdentifier(final InstanceIdentifier<?> path,
110 final NormalizedNodeStreamWriter domWriter) {
111 return getCodecContextNode(path, null).createWriter(domWriter);
114 BindingStreamEventWriter newRpcWriter(final Class<? extends DataContainer> rpcInputOrOutput,
115 final NormalizedNodeStreamWriter domWriter) {
116 return root.getRpc(rpcInputOrOutput).createWriter(domWriter);
119 BindingStreamEventWriter newNotificationWriter(final Class<? extends Notification> notification,
120 final NormalizedNodeStreamWriter domWriter) {
121 return root.getNotification(notification).createWriter(domWriter);
124 public DataContainerCodecContext<?,?> getCodecContextNode(final InstanceIdentifier<?> binding,
125 final List<YangInstanceIdentifier.PathArgument> builder) {
126 DataContainerCodecContext<?,?> currentNode = root;
127 for (final InstanceIdentifier.PathArgument bindingArg : binding.getPathArguments()) {
128 currentNode = currentNode.bindingPathArgumentChild(bindingArg, builder);
129 Preconditions.checkArgument(currentNode != null, "Supplied Instance Identifier %s is not valid.", binding);
135 * Multi-purpose utility function. Traverse the codec tree, looking for
136 * the appropriate codec for the specified {@link YangInstanceIdentifier}.
137 * As a side-effect, gather all traversed binding {@link InstanceIdentifier.PathArgument}s
138 * into the supplied collection.
140 * @param dom {@link YangInstanceIdentifier} which is to be translated
141 * @param bindingArguments Collection for traversed path arguments
142 * @return Codec for target node, or @null if the node does not have a
143 * binding representation (choice, case, leaf).
146 @Nullable NodeCodecContext<?> getCodecContextNode(final @Nonnull YangInstanceIdentifier dom,
147 final @Nullable Collection<InstanceIdentifier.PathArgument> bindingArguments) {
148 NodeCodecContext<?> currentNode = root;
149 ListNodeCodecContext<?> currentList = null;
151 for (final YangInstanceIdentifier.PathArgument domArg : dom.getPathArguments()) {
152 Preconditions.checkArgument(currentNode instanceof DataContainerCodecContext<?,?>,
153 "Unexpected child of non-container node %s", currentNode);
154 final DataContainerCodecContext<?,?> previous = (DataContainerCodecContext<?,?>) currentNode;
155 final NodeCodecContext<?> nextNode = previous.yangPathArgumentChild(domArg);
158 * List representation in YANG Instance Identifier consists of two
159 * arguments: first is list as a whole, second is list as an item so
160 * if it is /list it means list as whole, if it is /list/list - it
161 * is wildcarded and if it is /list/list[key] it is concrete item,
162 * all this variations are expressed in Binding Aware Instance
163 * Identifier as Item or IdentifiableItem
165 if (currentList != null) {
166 Preconditions.checkArgument(currentList == nextNode,
167 "List should be referenced two times in YANG Instance Identifier %s", dom);
169 // We entered list, so now we have all information to emit
170 // list path using second list argument.
171 if (bindingArguments != null) {
172 bindingArguments.add(currentList.getBindingPathArgument(domArg));
175 currentNode = nextNode;
176 } else if (nextNode instanceof ListNodeCodecContext) {
177 // We enter list, we do not update current Node yet,
178 // since we need to verify
179 currentList = (ListNodeCodecContext<?>) nextNode;
180 } else if (nextNode instanceof ChoiceNodeCodecContext) {
181 // We do not add path argument for choice, since
182 // it is not supported by binding instance identifier.
183 currentNode = nextNode;
184 } else if (nextNode instanceof DataContainerCodecContext<?,?>) {
185 if (bindingArguments != null) {
186 bindingArguments.add(((DataContainerCodecContext<?,?>) nextNode).getBindingPathArgument(domArg));
188 currentNode = nextNode;
189 } else if (nextNode instanceof LeafNodeCodecContext) {
190 LOG.debug("Instance identifier referencing a leaf is not representable (%s)", dom);
195 // Algorithm ended in list as whole representation
196 // we sill need to emit identifier for list
197 if (currentNode instanceof ChoiceNodeCodecContext) {
198 LOG.debug("Instance identifier targeting a choice is not representable (%s)", dom);
201 if (currentNode instanceof CaseNodeCodecContext) {
202 LOG.debug("Instance identifier targeting a case is not representable (%s)", dom);
206 if (currentList != null) {
207 if (bindingArguments != null) {
208 bindingArguments.add(currentList.getBindingPathArgument(null));
215 NotificationCodecContext<?> getNotificationContext(final SchemaPath notification) {
216 return root.getNotification(notification);
219 RpcInputCodec<?> getRpcInputCodec(final SchemaPath path) {
220 return root.getRpc(path);
224 public ImmutableMap<String, LeafNodeCodecContext<?>> getLeafNodes(final Class<?> parentClass,
225 final DataNodeContainer childSchema) {
226 final Map<String, DataSchemaNode> getterToLeafSchema = new HashMap<>();
227 for (final DataSchemaNode leaf : childSchema.getChildNodes()) {
228 if (leaf instanceof TypedDataSchemaNode) {
229 getterToLeafSchema.put(getGetterName(leaf, ((TypedDataSchemaNode) leaf).getType()), leaf);
232 return getLeafNodesUsingReflection(parentClass, getterToLeafSchema);
235 private static String getGetterName(final SchemaNode node, final TypeDefinition<?> typeDef) {
236 final String suffix = BindingMapping.getGetterSuffix(node.getQName());
237 // Bug 8903: If it is a derived type of boolean or empty, not an inner type, then the return type
238 // of method would be the generated type of typedef not build-in types, so here it should be 'get'.
239 if ((typeDef instanceof BooleanTypeDefinition || typeDef instanceof EmptyTypeDefinition)
240 && (typeDef.getPath().equals(node.getPath()) || typeDef.getBaseType() == null)) {
241 return "is" + suffix;
243 return "get" + suffix;
246 private ImmutableMap<String, LeafNodeCodecContext<?>> getLeafNodesUsingReflection(final Class<?> parentClass,
247 final Map<String, DataSchemaNode> getterToLeafSchema) {
248 final Map<String, LeafNodeCodecContext<?>> leaves = new HashMap<>();
249 for (final Method method : parentClass.getMethods()) {
250 if (method.getParameterTypes().length == 0) {
251 final DataSchemaNode schema = getterToLeafSchema.get(method.getName());
252 final Class<?> valueType;
253 if (schema instanceof LeafSchemaNode) {
254 valueType = method.getReturnType();
255 } else if (schema instanceof LeafListSchemaNode) {
256 final Type genericType = ClassLoaderUtils.getFirstGenericParameter(method.getGenericReturnType());
258 if (genericType instanceof Class<?>) {
259 valueType = (Class<?>) genericType;
260 } else if (genericType instanceof ParameterizedType) {
261 valueType = (Class<?>) ((ParameterizedType) genericType).getRawType();
263 throw new IllegalStateException("Unexpected return type " + genericType);
266 // We do not have schema for leaf, so we will ignore it (eg. getClass, getImplementedInterface).
269 final Codec<Object, Object> codec = getCodec(valueType, schema);
270 final LeafNodeCodecContext<?> leafNode = new LeafNodeCodecContext<>(schema, codec, method,
271 context.getSchemaContext());
272 leaves.put(schema.getQName().getLocalName(), leafNode);
275 return ImmutableMap.copyOf(leaves);
278 private Codec<Object, Object> getCodec(final Class<?> valueType, final DataSchemaNode schema) {
279 Preconditions.checkArgument(schema instanceof TypedDataSchemaNode, "Unsupported leaf node type %s", schema);
281 return getCodec(valueType, ((TypedDataSchemaNode)schema).getType());
284 Codec<Object, Object> getCodec(final Class<?> valueType, final TypeDefinition<?> instantiatedType) {
285 if (Class.class.equals(valueType)) {
286 @SuppressWarnings({ "unchecked", "rawtypes" })
287 final Codec<Object, Object> casted = (Codec) identityCodec;
289 } else if (InstanceIdentifier.class.equals(valueType)) {
290 @SuppressWarnings({ "unchecked", "rawtypes" })
291 final Codec<Object, Object> casted = (Codec) instanceIdentifierCodec;
293 } else if (Boolean.class.equals(valueType)) {
294 if (instantiatedType instanceof EmptyTypeDefinition) {
295 return ValueTypeCodec.EMPTY_CODEC;
297 } else if (BindingReflections.isBindingClass(valueType)) {
298 return getCodecForBindingClass(valueType, instantiatedType);
300 return ValueTypeCodec.NOOP_CODEC;
303 @SuppressWarnings("checkstyle:illegalCatch")
304 private Codec<Object, Object> getCodecForBindingClass(final Class<?> valueType, final TypeDefinition<?> typeDef) {
305 if (typeDef instanceof IdentityrefTypeDefinition) {
306 return ValueTypeCodec.encapsulatedValueCodecFor(valueType, typeDef, identityCodec);
307 } else if (typeDef instanceof InstanceIdentifierTypeDefinition) {
308 return ValueTypeCodec.encapsulatedValueCodecFor(valueType, typeDef, instanceIdentifierCodec);
309 } else if (typeDef instanceof UnionTypeDefinition) {
310 final Callable<UnionTypeCodec> loader = UnionTypeCodec.loader(valueType, (UnionTypeDefinition) typeDef,
313 return loader.call();
314 } catch (final Exception e) {
315 throw new IllegalStateException("Unable to load codec for " + valueType, e);
317 } else if (typeDef instanceof LeafrefTypeDefinition) {
318 final Entry<GeneratedType, Object> typeWithSchema = context.getTypeWithSchema(valueType);
319 final Object schema = typeWithSchema.getValue();
320 Preconditions.checkState(schema instanceof TypeDefinition<?>);
321 return getCodec(valueType, (TypeDefinition<?>) schema);
323 return ValueTypeCodec.getCodecFor(valueType, typeDef);
327 public Codec<NodeIdentifierWithPredicates, IdentifiableItem<?, ?>> getPathArgumentCodec(final Class<?> listClz,
328 final ListSchemaNode schema) {
329 final Class<? extends Identifier<?>> identifier = ClassLoaderUtils.findFirstGenericArgument(listClz,
331 final Map<QName, ValueContext> valueCtx = new HashMap<>();
332 for (final LeafNodeCodecContext<?> leaf : getLeafNodes(identifier, schema).values()) {
333 final QName name = leaf.getDomPathArgument().getNodeType();
334 valueCtx.put(name, new ValueContext(identifier, leaf));
336 return new IdentifiableItemCodec(schema, identifier, listClz, valueCtx);
339 @SuppressWarnings("unchecked")
341 public <T extends DataObject> BindingCodecTreeNode<T> getSubtreeCodec(final InstanceIdentifier<T> path) {
342 // TODO Do we need defensive check here?
343 return (BindingCodecTreeNode<T>) getCodecContextNode(path, null);
347 public BindingCodecTreeNode<?> getSubtreeCodec(final YangInstanceIdentifier path) {
348 return getCodecContextNode(path, null);
352 public BindingCodecTreeNode<?> getSubtreeCodec(final SchemaPath path) {
353 throw new UnsupportedOperationException("Not implemented yet.");