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;
14 import com.google.common.base.Throwables;
15 import com.google.common.base.Verify;
16 import com.google.common.cache.CacheBuilder;
17 import com.google.common.cache.CacheLoader;
18 import com.google.common.cache.LoadingCache;
19 import com.google.common.util.concurrent.UncheckedExecutionException;
20 import java.lang.reflect.ParameterizedType;
21 import java.lang.reflect.Type;
22 import java.util.List;
23 import java.util.Optional;
24 import org.eclipse.jdt.annotation.NonNull;
25 import org.opendaylight.mdsal.binding.spec.naming.BindingMapping;
26 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
27 import org.opendaylight.yangtools.util.ClassLoaderUtils;
28 import org.opendaylight.yangtools.yang.binding.Action;
29 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
30 import org.opendaylight.yangtools.yang.binding.DataContainer;
31 import org.opendaylight.yangtools.yang.binding.DataObject;
32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
33 import org.opendaylight.yangtools.yang.binding.KeyedListAction;
34 import org.opendaylight.yangtools.yang.binding.Notification;
35 import org.opendaylight.yangtools.yang.binding.RpcInput;
36 import org.opendaylight.yangtools.yang.binding.RpcOutput;
37 import org.opendaylight.yangtools.yang.common.QName;
38 import org.opendaylight.yangtools.yang.common.QNameModule;
39 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
40 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
41 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
42 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
43 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
44 import org.opendaylight.yangtools.yang.model.api.ContainerLike;
45 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
46 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
47 import org.opendaylight.yangtools.yang.model.api.Module;
48 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
49 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
50 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
51 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
52 import org.opendaylight.yangtools.yang.model.util.SchemaContextUtil;
53 import org.opendaylight.yangtools.yang.model.util.SchemaNodeUtils;
55 final class SchemaRootCodecContext<D extends DataObject> extends DataContainerCodecContext<D,SchemaContext> {
57 private final LoadingCache<Class<?>, DataContainerCodecContext<?, ?>> childrenByClass =
58 CacheBuilder.newBuilder()
59 .build(new CacheLoader<Class<?>, DataContainerCodecContext<?,?>>() {
61 public DataContainerCodecContext<?,?> load(final Class<?> key) {
62 return createDataTreeChildContext(key);
66 private final LoadingCache<Class<? extends Action<?, ?, ?>>, ActionCodecContext> actionsByClass =
67 CacheBuilder.newBuilder().build(new CacheLoader<>() {
69 public ActionCodecContext load(final Class<? extends Action<?, ?, ?>> key) {
70 return createActionContext(key);
74 private final LoadingCache<Class<?>, ContainerNodeCodecContext<?>> rpcDataByClass = CacheBuilder.newBuilder().build(
75 new CacheLoader<Class<?>, ContainerNodeCodecContext<?>>() {
77 public ContainerNodeCodecContext<?> load(final Class<?> key) {
78 return createRpcDataContext(key);
82 private final LoadingCache<Class<?>, NotificationCodecContext<?>> notificationsByClass = CacheBuilder.newBuilder()
83 .build(new CacheLoader<Class<?>, NotificationCodecContext<?>>() {
85 public NotificationCodecContext<?> load(final Class<?> key) {
86 return createNotificationDataContext(key);
90 private final LoadingCache<Class<? extends DataObject>, ChoiceNodeCodecContext<?>> choicesByClass =
91 CacheBuilder.newBuilder().build(new CacheLoader<>() {
93 public ChoiceNodeCodecContext<?> load(final Class<? extends DataObject> key) {
94 return createChoiceDataContext(key);
98 private final LoadingCache<QName, DataContainerCodecContext<?,?>> childrenByQName =
99 CacheBuilder.newBuilder().build(new CacheLoader<>() {
101 public DataContainerCodecContext<?, ?> load(final QName qname) {
102 final DataSchemaNode childSchema = getSchema().getDataChildByName(qname);
103 childNonNull(childSchema, qname, "Argument %s is not valid child of %s", qname, getSchema());
104 if (childSchema instanceof DataNodeContainer || childSchema instanceof ChoiceSchemaNode) {
105 @SuppressWarnings("unchecked")
106 final Class<? extends DataObject> childCls = (Class<? extends DataObject>)
107 factory().getRuntimeContext().getClassForSchema(childSchema);
108 return streamChild(childCls);
111 throw new UnsupportedOperationException("Unsupported child type " + childSchema.getClass());
115 private final LoadingCache<Absolute, RpcInputCodec<?>> rpcDataByPath =
116 CacheBuilder.newBuilder().build(new CacheLoader<>() {
118 public RpcInputCodec<?> load(final Absolute key) {
119 final ContainerLike schema = SchemaContextUtil.getRpcDataSchema(getSchema(), key.asSchemaPath());
120 @SuppressWarnings("unchecked")
121 final Class<? extends DataContainer> cls = (Class<? extends DataContainer>)
122 factory().getRuntimeContext().getClassForSchema(schema);
127 private final LoadingCache<Absolute, NotificationCodecContext<?>> notificationsByPath =
128 CacheBuilder.newBuilder().build(new CacheLoader<>() {
130 public NotificationCodecContext<?> load(final Absolute key) {
131 final NotificationDefinition schema = SchemaContextUtil.getNotificationSchema(getSchema(),
132 // FIXME: do not convert here!
134 @SuppressWarnings("unchecked")
135 final Class<? extends Notification> clz = (Class<? extends Notification>)
136 factory().getRuntimeContext().getClassForSchema(schema);
137 return getNotification(clz);
141 private SchemaRootCodecContext(final DataContainerCodecPrototype<SchemaContext> dataPrototype) {
142 super(dataPrototype);
146 * Creates RootNode from supplied CodecContextFactory.
149 * CodecContextFactory
150 * @return A new root node
152 static SchemaRootCodecContext<?> create(final CodecContextFactory factory) {
153 final DataContainerCodecPrototype<SchemaContext> prototype = DataContainerCodecPrototype.rootPrototype(factory);
154 return new SchemaRootCodecContext<>(prototype);
158 @SuppressWarnings("unchecked")
160 public <C extends DataObject> DataContainerCodecContext<C, ?> streamChild(final Class<C> childClass) {
161 /* FIXME: This is still not solved for RPCs
162 * TODO: Probably performance wise RPC, Data and Notification loading cache
163 * should be merge for performance resons. Needs microbenchmark to
164 * determine which is faster (keeping them separate or in same cache).
166 if (Notification.class.isAssignableFrom(childClass)) {
167 return (DataContainerCodecContext<C, ?>) getNotification((Class<? extends Notification>)childClass);
169 return (DataContainerCodecContext<C, ?>) getOrRethrow(childrenByClass,childClass);
173 public <C extends DataObject> Optional<DataContainerCodecContext<C, ?>> possibleStreamChild(
174 final Class<C> childClass) {
175 throw new UnsupportedOperationException("Not supported");
179 public DataContainerCodecContext<?,?> yangPathArgumentChild(final PathArgument arg) {
180 return getOrRethrow(childrenByQName, arg.getNodeType());
184 public D deserialize(final NormalizedNode<?, ?> normalizedNode) {
185 throw new UnsupportedOperationException("Could not create Binding data representation for root");
188 ActionCodecContext getAction(final Class<? extends Action<?, ?, ?>> action) {
189 return getOrRethrow(actionsByClass, action);
192 NotificationCodecContext<?> getNotification(final Class<? extends Notification> notification) {
193 return getOrRethrow(notificationsByClass, notification);
196 NotificationCodecContext<?> getNotification(final Absolute notification) {
197 return getOrRethrow(notificationsByPath, notification);
200 ContainerNodeCodecContext<?> getRpc(final Class<? extends DataContainer> rpcInputOrOutput) {
201 return getOrRethrow(rpcDataByClass, rpcInputOrOutput);
204 RpcInputCodec<?> getRpc(final Absolute containerPath) {
205 return getOrRethrow(rpcDataByPath, containerPath);
208 DataContainerCodecContext<?,?> createDataTreeChildContext(final Class<?> key) {
209 final QName qname = BindingReflections.findQName(key);
210 final DataSchemaNode childSchema = childNonNull(getSchema().getDataChildByName(qname), key,
211 "%s is not top-level item.", key);
212 return DataContainerCodecPrototype.from(key, childSchema, factory()).get();
215 ActionCodecContext createActionContext(final Class<? extends Action<?, ?, ?>> action) {
216 if (KeyedListAction.class.isAssignableFrom(action)) {
217 return prepareActionContext(2, 3, 4, action, KeyedListAction.class);
218 } else if (Action.class.isAssignableFrom(action)) {
219 return prepareActionContext(1, 2, 3, action, Action.class);
221 throw new IllegalArgumentException("The specific action type does not exist for action " + action.getName());
224 private ActionCodecContext prepareActionContext(final int inputOffset, final int outputOffset,
225 final int expectedArgsLength, final Class<? extends Action<?, ?, ?>> action, final Class<?> actionType) {
226 final Optional<ParameterizedType> optParamType = ClassLoaderUtils.findParameterizedType(action, actionType);
227 checkState(optParamType.isPresent(), "%s does not specialize %s", action, actionType);
229 final ParameterizedType paramType = optParamType.get();
230 final Type[] args = paramType.getActualTypeArguments();
231 checkArgument(args.length == expectedArgsLength, "Unexpected (%s) Action generatic arguments", args.length);
232 final ActionDefinition schema = factory().getRuntimeContext().getActionDefinition(action);
233 return new ActionCodecContext(
234 DataContainerCodecPrototype.from(asClass(args[inputOffset], RpcInput.class), schema.getInput(),
236 DataContainerCodecPrototype.from(asClass(args[outputOffset], RpcOutput.class), schema.getOutput(),
240 private static <T extends DataObject> Class<? extends T> asClass(final Type type, final Class<T> target) {
241 verify(type instanceof Class, "Type %s is not a class", type);
242 return ((Class<?>) type).asSubclass(target);
245 ContainerNodeCodecContext<?> createRpcDataContext(final Class<?> key) {
246 checkArgument(DataContainer.class.isAssignableFrom(key));
247 final QName qname = BindingReflections.findQName(key);
248 final QNameModule qnameModule = qname.getModule();
249 final Module module = getSchema().findModule(qnameModule)
250 .orElseThrow(() -> new IllegalArgumentException("Failed to find module for " + qnameModule));
251 final String className = BindingMapping.getClassName(qname);
253 for (final RpcDefinition potential : module.getRpcs()) {
254 final QName potentialQName = potential.getQName();
256 * Check if rpc and class represents data from same module and then checks if rpc local name produces same
257 * class name as class name appended with Input/Output based on QName associated with binding class.
259 * FIXME: Rework this to have more precise logic regarding Binding Specification.
261 if (key.getSimpleName().equals(BindingMapping.getClassName(potentialQName) + className)) {
262 final ContainerLike schema = SchemaNodeUtils.getRpcDataSchema(potential, qname);
263 checkArgument(schema != null, "Schema for %s does not define input / output.", potential.getQName());
264 return (ContainerNodeCodecContext<?>) DataContainerCodecPrototype.from(key, schema, factory()).get();
268 throw new IllegalArgumentException("Supplied class " + key + " is not valid RPC class.");
271 NotificationCodecContext<?> createNotificationDataContext(final Class<?> notificationType) {
272 checkArgument(Notification.class.isAssignableFrom(notificationType));
273 checkArgument(notificationType.isInterface(), "Supplied class must be interface.");
274 final QName qname = BindingReflections.findQName(notificationType);
275 final NotificationDefinition schema = getSchema().findNotification(qname).orElseThrow(
276 () -> new IllegalArgumentException("Supplied " + notificationType + " is not valid notification"));
277 return new NotificationCodecContext<>(notificationType, schema, factory());
280 ChoiceNodeCodecContext<?> createChoiceDataContext(final Class<? extends DataObject> caseType) {
281 final Class<?> choiceClass = findCaseChoice(caseType);
282 checkArgument(choiceClass != null, "Class %s is not a valid case representation", caseType);
283 final DataSchemaNode schema = factory().getRuntimeContext().getSchemaDefinition(choiceClass);
284 checkArgument(schema instanceof ChoiceSchemaNode, "Class %s does not refer to a choice", caseType);
286 final DataContainerCodecContext<?, ChoiceSchemaNode> choice = DataContainerCodecPrototype.from(choiceClass,
287 (ChoiceSchemaNode)schema, factory()).get();
288 Verify.verify(choice instanceof ChoiceNodeCodecContext);
289 return (ChoiceNodeCodecContext<?>) choice;
293 protected Object deserializeObject(final NormalizedNode<?, ?> normalizedNode) {
294 throw new UnsupportedOperationException("Unable to deserialize root");
298 public InstanceIdentifier.PathArgument deserializePathArgument(final YangInstanceIdentifier.PathArgument arg) {
299 checkArgument(arg == null);
304 public YangInstanceIdentifier.PathArgument serializePathArgument(final InstanceIdentifier.PathArgument arg) {
305 checkArgument(arg == null);
310 public DataContainerCodecContext<?, ?> bindingPathArgumentChild(final InstanceIdentifier.PathArgument arg,
311 final List<PathArgument> builder) {
312 final Optional<? extends Class<? extends DataObject>> caseType = arg.getCaseType();
313 if (caseType.isPresent()) {
314 final @NonNull Class<? extends DataObject> type = caseType.orElseThrow();
315 final ChoiceNodeCodecContext<?> choice = choicesByClass.getUnchecked(type);
316 choice.addYangPathArgument(arg, builder);
317 final DataContainerCodecContext<?, ?> caze = choice.streamChild(type);
318 caze.addYangPathArgument(arg, builder);
319 return caze.bindingPathArgumentChild(arg, builder);
322 return super.bindingPathArgumentChild(arg, builder);
325 private static Class<?> findCaseChoice(final Class<? extends DataObject> caseClass) {
326 for (Type type : caseClass.getGenericInterfaces()) {
327 if (type instanceof Class) {
328 final Class<?> typeClass = (Class<?>) type;
329 if (ChoiceIn.class.isAssignableFrom(typeClass)) {
330 return typeClass.asSubclass(ChoiceIn.class);
338 private static <K,V> V getOrRethrow(final LoadingCache<K, V> cache, final K key) {
340 return cache.getUnchecked(key);
341 } catch (final UncheckedExecutionException e) {
342 final Throwable cause = e.getCause();
344 Throwables.throwIfUnchecked(cause);