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.base.Throwables;
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.collect.ImmutableCollection;
20 import com.google.common.util.concurrent.UncheckedExecutionException;
21 import java.lang.reflect.ParameterizedType;
22 import java.lang.reflect.Type;
23 import java.util.List;
24 import java.util.Optional;
25 import java.util.function.BiFunction;
26 import org.eclipse.jdt.annotation.NonNull;
27 import org.eclipse.jdt.annotation.Nullable;
28 import org.opendaylight.mdsal.binding.dom.codec.api.BindingDataObjectCodecTreeNode;
29 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeCachingCodec;
30 import org.opendaylight.mdsal.binding.dom.codec.api.IncorrectNestingException;
31 import org.opendaylight.mdsal.binding.model.api.JavaTypeName;
32 import org.opendaylight.mdsal.binding.runtime.api.ActionRuntimeType;
33 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeContext;
34 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeTypes;
35 import org.opendaylight.mdsal.binding.runtime.api.ChoiceRuntimeType;
36 import org.opendaylight.mdsal.binding.runtime.api.CompositeRuntimeType;
37 import org.opendaylight.mdsal.binding.runtime.api.ContainerLikeRuntimeType;
38 import org.opendaylight.mdsal.binding.runtime.api.DataRuntimeType;
39 import org.opendaylight.mdsal.binding.runtime.api.NotificationRuntimeType;
40 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
41 import org.opendaylight.yangtools.util.ClassLoaderUtils;
42 import org.opendaylight.yangtools.yang.binding.Action;
43 import org.opendaylight.yangtools.yang.binding.BindingObject;
44 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
45 import org.opendaylight.yangtools.yang.binding.DataContainer;
46 import org.opendaylight.yangtools.yang.binding.DataObject;
47 import org.opendaylight.yangtools.yang.binding.DataRoot;
48 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
49 import org.opendaylight.yangtools.yang.binding.KeyedListAction;
50 import org.opendaylight.yangtools.yang.binding.Notification;
51 import org.opendaylight.yangtools.yang.binding.RpcInput;
52 import org.opendaylight.yangtools.yang.binding.RpcOutput;
53 import org.opendaylight.yangtools.yang.binding.contract.Naming;
54 import org.opendaylight.yangtools.yang.common.QName;
55 import org.opendaylight.yangtools.yang.common.QNameModule;
56 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
57 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
58 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
59 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
60 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
61 import org.opendaylight.yangtools.yang.model.api.ContainerLike;
62 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
63 import org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus;
64 import org.opendaylight.yangtools.yang.model.api.Module;
65 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
66 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
67 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
69 final class RootCodecContext<D extends DataObject> extends DataContainerCodecContext<D, BindingRuntimeTypes>
70 implements BindingDataObjectCodecTreeNode<D> {
72 * Prototype for the root of YANG modeled world. This class only exists because DataContainerCodecContext requires
75 private static final class Prototype extends DataObjectCodecPrototype<BindingRuntimeTypes> {
76 private static final @NonNull NodeIdentifier ROOT_NODEID = NodeIdentifier.create(SchemaContext.NAME);
78 Prototype(final CodecContextFactory factory) {
79 super(DataRoot.class, ROOT_NODEID, factory.getRuntimeContext().getTypes(), factory);
83 DataContainerCodecContext<?, BindingRuntimeTypes> createInstance() {
84 throw new UnsupportedOperationException("Should never be invoked");
88 private final LoadingCache<Class<? extends DataObject>, DataContainerCodecContext<?, ?>> childrenByClass =
89 CacheBuilder.newBuilder().build(new CacheLoader<>() {
91 public DataContainerCodecContext<?, ?> load(final Class<? extends DataObject> key) {
92 return createDataTreeChildContext(key);
96 private final LoadingCache<Class<? extends Action<?, ?, ?>>, ActionCodecContext> actionsByClass =
97 CacheBuilder.newBuilder().build(new CacheLoader<>() {
99 public ActionCodecContext load(final Class<? extends Action<?, ?, ?>> key) {
100 return createActionContext(key);
104 private final LoadingCache<Class<? extends DataObject>, ChoiceCodecContext<?>> choicesByClass =
105 CacheBuilder.newBuilder().build(new CacheLoader<>() {
107 public ChoiceCodecContext<?> load(final Class<? extends DataObject> key) {
108 return createChoiceDataContext(key);
112 private final LoadingCache<Class<?>, NotificationCodecContext<?>> notificationsByClass = CacheBuilder.newBuilder()
113 .build(new CacheLoader<>() {
115 public NotificationCodecContext<?> load(final Class<?> key) {
116 // FIXME: sharpen check to an Notification.class
117 checkArgument(key.isInterface(), "Supplied class must be interface.");
119 // TODO: we should be able to work with bindingChild() instead of schemaTreeChild() here
120 final var qname = BindingReflections.findQName(key);
121 if (type().schemaTreeChild(qname) instanceof NotificationRuntimeType type) {
122 return new NotificationCodecContext<>(key, type, factory());
124 throw new IllegalArgumentException("Supplied " + key + " is not valid notification");
128 private final LoadingCache<Class<?>, ContainerLikeCodecContext<?>> rpcDataByClass = CacheBuilder.newBuilder()
129 .build(new CacheLoader<>() {
131 public ContainerLikeCodecContext<?> load(final Class<?> key) {
132 final BiFunction<BindingRuntimeTypes, QName, Optional<? extends ContainerLikeRuntimeType<?, ?>>> lookup;
133 if (RpcInput.class.isAssignableFrom(key)) {
134 lookup = BindingRuntimeTypes::findRpcInput;
135 } else if (RpcOutput.class.isAssignableFrom(key)) {
136 lookup = BindingRuntimeTypes::findRpcOutput;
138 throw new IllegalArgumentException(key + " does not represent an RPC container");
141 final CodecContextFactory factory = factory();
142 final BindingRuntimeContext context = factory.getRuntimeContext();
144 final QName qname = BindingReflections.findQName(key);
145 final QNameModule qnameModule = qname.getModule();
146 final Module module = context.getEffectiveModelContext().findModule(qnameModule)
147 .orElseThrow(() -> new IllegalArgumentException("Failed to find module for " + qnameModule));
148 final String className = Naming.getClassName(qname);
150 for (final RpcDefinition potential : module.getRpcs()) {
151 final QName potentialQName = potential.getQName();
153 * Check if rpc and class represents data from same module and then checks if rpc local name
154 * produces same class name as class name appended with Input/Output based on QName associated
155 * with binding class.
157 * FIXME: Rework this to have more precise logic regarding Binding Specification.
159 if (key.getSimpleName().equals(Naming.getClassName(potentialQName) + className)) {
160 final ContainerLike schema = getRpcDataSchema(potential, qname);
161 checkArgument(schema != null, "Schema for %s does not define input / output.", potentialQName);
163 final ContainerLikeRuntimeType<?, ?> type = lookup.apply(context.getTypes(), potentialQName)
164 .orElseThrow(() -> new IllegalArgumentException("Cannot find runtime type for " + key));
166 return (ContainerLikeCodecContext) DataContainerCodecPrototype.from(key,
167 (ContainerLikeRuntimeType<?, ?>) type, factory).get();
171 throw new IllegalArgumentException("Supplied class " + key + " is not valid RPC class.");
175 private final LoadingCache<QName, DataContainerCodecContext<?,?>> childrenByQName =
176 CacheBuilder.newBuilder().build(new CacheLoader<>() {
178 public DataContainerCodecContext<?, ?> load(final QName qname) throws ClassNotFoundException {
179 final var type = type();
180 final var child = childNonNull(type.schemaTreeChild(qname), qname,
181 "Argument %s is not valid child of %s", qname, type);
182 if (!(child instanceof DataRuntimeType)) {
183 throw new IncorrectNestingException("Argument %s is not valid data tree child of %s", qname, type);
186 // TODO: improve this check?
187 final var childSchema = child.statement();
188 if (childSchema instanceof DataNodeContainer || childSchema instanceof ChoiceSchemaNode) {
189 return getStreamChild(factory().getRuntimeContext().loadClass(child.javaType()));
192 throw new UnsupportedOperationException("Unsupported child type " + childSchema.getClass());
196 private final LoadingCache<Absolute, RpcInputCodec<?>> rpcDataByPath =
197 CacheBuilder.newBuilder().build(new CacheLoader<>() {
199 public RpcInputCodec<?> load(final Absolute key) {
200 final var rpcName = key.firstNodeIdentifier();
201 final var context = factory().getRuntimeContext();
203 final Class<? extends DataContainer> container = switch (key.lastNodeIdentifier().getLocalName()) {
204 case "input" -> context.getRpcInput(rpcName);
205 case "output" -> context.getRpcOutput(rpcName);
206 default -> throw new IllegalArgumentException("Unhandled path " + key);
209 return getRpc(container);
213 private final LoadingCache<Absolute, NotificationCodecContext<?>> notificationsByPath =
214 CacheBuilder.newBuilder().build(new CacheLoader<>() {
216 public NotificationCodecContext<?> load(final Absolute key) {
217 final var cls = factory().getRuntimeContext().getClassForSchema(key);
219 return getNotificationImpl(cls.asSubclass(Notification.class));
220 } catch (ClassCastException e) {
221 throw new IllegalArgumentException("Path " + key + " does not represent a notification", e);
226 RootCodecContext(final CodecContextFactory factory) {
227 super(new Prototype(factory));
231 public WithStatus getSchema() {
232 return type().getEffectiveModelContext();
236 @SuppressWarnings("unchecked")
237 public <C extends DataObject> DataContainerCodecContext<C, ?> getStreamChild(final Class<C> childClass) {
238 final var result = Notification.class.isAssignableFrom(childClass) ? getNotificationImpl(childClass)
239 : getOrRethrow(childrenByClass, childClass);
240 return (DataContainerCodecContext<C, ?>) result;
244 public <C extends DataObject> DataContainerCodecContext<C, ?> streamChild(final Class<C> childClass) {
245 // FIXME: implement this
246 throw new UnsupportedOperationException("Not supported");
250 public DataContainerCodecContext<?,?> yangPathArgumentChild(final PathArgument arg) {
251 return getOrRethrow(childrenByQName, arg.getNodeType());
255 public D deserialize(final NormalizedNode data) {
256 throw new UnsupportedOperationException("Could not create Binding data representation for root");
260 public NormalizedNode serialize(final D data) {
261 return serializeImpl(data);
264 ActionCodecContext getAction(final Class<? extends Action<?, ?, ?>> action) {
265 return getOrRethrow(actionsByClass, action);
268 NotificationCodecContext<?> getNotification(final Absolute notification) {
269 return getOrRethrow(notificationsByPath, notification);
272 NotificationCodecContext<?> getNotification(final Class<? extends Notification<?>> notification) {
273 return getNotificationImpl(notification);
276 private NotificationCodecContext<?> getNotificationImpl(final Class<?> notification) {
277 return getOrRethrow(notificationsByClass, notification);
280 ContainerLikeCodecContext<?> getRpc(final Class<? extends DataContainer> rpcInputOrOutput) {
281 return getOrRethrow(rpcDataByClass, rpcInputOrOutput);
284 RpcInputCodec<?> getRpc(final Absolute containerPath) {
285 return getOrRethrow(rpcDataByPath, containerPath);
288 DataContainerCodecContext<?, ?> createDataTreeChildContext(final Class<? extends DataObject> key) {
289 final var childSchema = childNonNull(type().bindingChild(JavaTypeName.create(key)), key,
290 "%s is not top-level item.", key);
291 if (childSchema instanceof CompositeRuntimeType composite && childSchema instanceof DataRuntimeType) {
292 return DataContainerCodecPrototype.from(key, composite, factory()).get();
294 throw new IncorrectNestingException("%s is not a valid data tree child of %s", key, this);
297 ActionCodecContext createActionContext(final Class<? extends Action<?, ?, ?>> action) {
298 if (KeyedListAction.class.isAssignableFrom(action)) {
299 return prepareActionContext(2, 3, 4, action, KeyedListAction.class);
300 } else if (Action.class.isAssignableFrom(action)) {
301 return prepareActionContext(1, 2, 3, action, Action.class);
303 throw new IllegalArgumentException("The specific action type does not exist for action " + action.getName());
306 private ActionCodecContext prepareActionContext(final int inputOffset, final int outputOffset,
307 final int expectedArgsLength, final Class<? extends Action<?, ?, ?>> action, final Class<?> actionType) {
308 final Optional<ParameterizedType> optParamType = ClassLoaderUtils.findParameterizedType(action, actionType);
309 checkState(optParamType.isPresent(), "%s does not specialize %s", action, actionType);
311 final ParameterizedType paramType = optParamType.orElseThrow();
312 final Type[] args = paramType.getActualTypeArguments();
313 checkArgument(args.length == expectedArgsLength, "Unexpected (%s) Action generatic arguments", args.length);
314 final ActionRuntimeType schema = factory().getRuntimeContext().getActionDefinition(action);
315 return new ActionCodecContext(
316 DataContainerCodecPrototype.from(asClass(args[inputOffset], RpcInput.class), schema.input(),
317 factory()).getDataObject(),
318 DataContainerCodecPrototype.from(asClass(args[outputOffset], RpcOutput.class), schema.output(),
319 factory()).getDataObject());
322 private static <T extends DataObject> Class<? extends T> asClass(final Type type, final Class<T> target) {
323 verify(type instanceof Class, "Type %s is not a class", type);
324 return ((Class<?>) type).asSubclass(target);
328 * Returns RPC input or output schema based on supplied QName.
330 * @param rpc RPC Definition
331 * @param qname input or output QName with namespace same as RPC
332 * @return input or output schema. Returns null if RPC does not have input/output specified.
334 private static @Nullable ContainerLike getRpcDataSchema(final @NonNull RpcDefinition rpc,
335 final @NonNull QName qname) {
336 requireNonNull(rpc, "Rpc Schema must not be null");
337 return switch (requireNonNull(qname, "QName must not be null").getLocalName()) {
338 case "input" -> rpc.getInput();
339 case "output" -> rpc.getOutput();
340 default -> throw new IllegalArgumentException(
341 "Supplied qname " + qname + " does not represent rpc input or output.");
345 ChoiceCodecContext<?> createChoiceDataContext(final Class<? extends DataObject> caseType) {
346 final var choiceClass = findCaseChoice(caseType);
347 if (choiceClass == null) {
348 throw new IllegalArgumentException(caseType + " is not a valid case representation");
351 final var runtimeType = factory().getRuntimeContext().getSchemaDefinition(choiceClass);
352 if (!(runtimeType instanceof ChoiceRuntimeType choiceType)) {
353 throw new IllegalArgumentException(caseType + " does not refer to a choice");
356 final var choice = DataContainerCodecPrototype.from(choiceClass, choiceType, factory()).get();
357 verify(choice instanceof ChoiceCodecContext);
358 return (ChoiceCodecContext<?>) choice;
362 protected Object deserializeObject(final NormalizedNode normalizedNode) {
363 throw new UnsupportedOperationException("Unable to deserialize root");
367 public InstanceIdentifier.PathArgument deserializePathArgument(final YangInstanceIdentifier.PathArgument arg) {
368 checkArgument(arg == null);
373 public YangInstanceIdentifier.PathArgument serializePathArgument(final InstanceIdentifier.PathArgument arg) {
374 checkArgument(arg == null);
379 public DataContainerCodecContext<?, ?> bindingPathArgumentChild(final InstanceIdentifier.PathArgument arg,
380 final List<PathArgument> builder) {
381 final var caseType = arg.getCaseType();
382 if (caseType.isPresent()) {
383 final @NonNull Class<? extends DataObject> type = caseType.orElseThrow();
384 final var choice = choicesByClass.getUnchecked(type);
385 choice.addYangPathArgument(arg, builder);
386 final var caze = choice.getStreamChild(type);
387 caze.addYangPathArgument(arg, builder);
388 return caze.bindingPathArgumentChild(arg, builder);
391 return super.bindingPathArgumentChild(arg, builder);
395 public BindingNormalizedNodeCachingCodec<D> createCachingCodec(
396 final ImmutableCollection<Class<? extends BindingObject>> cacheSpecifier) {
397 return createCachingCodec(this, cacheSpecifier);
400 private static Class<?> findCaseChoice(final Class<? extends DataObject> caseClass) {
401 for (var type : caseClass.getGenericInterfaces()) {
402 if (type instanceof Class<?> typeClass && ChoiceIn.class.isAssignableFrom(typeClass)) {
403 return typeClass.asSubclass(ChoiceIn.class);
409 private static <K,V> V getOrRethrow(final LoadingCache<K, V> cache, final K key) {
411 return cache.getUnchecked(key);
412 } catch (UncheckedExecutionException e) {
413 final var cause = e.getCause();
415 Throwables.throwIfUnchecked(cause);