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.base.Verify;
17 import com.google.common.cache.CacheBuilder;
18 import com.google.common.cache.CacheLoader;
19 import com.google.common.cache.LoadingCache;
20 import com.google.common.util.concurrent.UncheckedExecutionException;
21 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
22 import java.lang.reflect.ParameterizedType;
23 import java.lang.reflect.Type;
24 import java.util.Iterator;
25 import java.util.List;
26 import java.util.Optional;
27 import org.eclipse.jdt.annotation.NonNull;
28 import org.eclipse.jdt.annotation.Nullable;
29 import org.opendaylight.mdsal.binding.spec.naming.BindingMapping;
30 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
31 import org.opendaylight.yangtools.util.ClassLoaderUtils;
32 import org.opendaylight.yangtools.yang.binding.Action;
33 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
34 import org.opendaylight.yangtools.yang.binding.DataContainer;
35 import org.opendaylight.yangtools.yang.binding.DataObject;
36 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
37 import org.opendaylight.yangtools.yang.binding.KeyedListAction;
38 import org.opendaylight.yangtools.yang.binding.Notification;
39 import org.opendaylight.yangtools.yang.binding.RpcInput;
40 import org.opendaylight.yangtools.yang.binding.RpcOutput;
41 import org.opendaylight.yangtools.yang.common.QName;
42 import org.opendaylight.yangtools.yang.common.QNameModule;
43 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
44 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
45 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
46 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
47 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
48 import org.opendaylight.yangtools.yang.model.api.ContainerLike;
49 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
50 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
51 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
52 import org.opendaylight.yangtools.yang.model.api.Module;
53 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
54 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
55 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
56 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeEffectiveStatement;
58 final class SchemaRootCodecContext<D extends DataObject> extends DataContainerCodecContext<D, EffectiveModelContext> {
60 private final LoadingCache<Class<? extends DataObject>, DataContainerCodecContext<?, ?>> childrenByClass =
61 CacheBuilder.newBuilder().build(new CacheLoader<>() {
63 public DataContainerCodecContext<?, ?> load(final Class<? extends DataObject> key) {
64 if (Notification.class.isAssignableFrom(key)) {
65 checkArgument(key.isInterface(), "Supplied class must be interface.");
66 final QName qname = BindingReflections.findQName(key);
67 final NotificationDefinition schema = getSchema().findNotification(qname).orElseThrow(
68 () -> new IllegalArgumentException("Supplied " + key + " is not valid notification"));
69 return new NotificationCodecContext<>(key, schema, factory());
71 return createDataTreeChildContext(key);
75 private final LoadingCache<Class<? extends Action<?, ?, ?>>, ActionCodecContext> actionsByClass =
76 CacheBuilder.newBuilder().build(new CacheLoader<>() {
78 public ActionCodecContext load(final Class<? extends Action<?, ?, ?>> key) {
79 return createActionContext(key);
83 private final LoadingCache<Class<? extends DataObject>, ChoiceNodeCodecContext<?>> choicesByClass =
84 CacheBuilder.newBuilder().build(new CacheLoader<>() {
86 public ChoiceNodeCodecContext<?> load(final Class<? extends DataObject> key) {
87 return createChoiceDataContext(key);
91 private final LoadingCache<Class<?>, ContainerNodeCodecContext<?>> rpcDataByClass = CacheBuilder.newBuilder()
92 .build(new CacheLoader<Class<?>, ContainerNodeCodecContext<?>>() {
94 public ContainerNodeCodecContext<?> load(final Class<?> key) {
95 final QName qname = BindingReflections.findQName(key);
96 final QNameModule qnameModule = qname.getModule();
97 final Module module = getSchema().findModule(qnameModule).orElseThrow(
98 () -> new IllegalArgumentException("Failed to find module for " + qnameModule));
99 final String className = BindingMapping.getClassName(qname);
101 for (final RpcDefinition potential : module.getRpcs()) {
102 final QName potentialQName = potential.getQName();
104 * Check if rpc and class represents data from same module and then checks if rpc local name
105 * produces same class name as class name appended with Input/Output based on QName associated
106 * with binding class.
108 * FIXME: Rework this to have more precise logic regarding Binding Specification.
110 if (key.getSimpleName().equals(BindingMapping.getClassName(potentialQName) + className)) {
111 final ContainerLike schema = getRpcDataSchema(potential, qname);
112 checkArgument(schema != null, "Schema for %s does not define input / output.", potentialQName);
113 return (ContainerNodeCodecContext<?>) DataContainerCodecPrototype.from(key, schema, factory())
118 throw new IllegalArgumentException("Supplied class " + key + " is not valid RPC class.");
122 private final LoadingCache<QName, DataContainerCodecContext<?,?>> childrenByQName =
123 CacheBuilder.newBuilder().build(new CacheLoader<>() {
125 public DataContainerCodecContext<?, ?> load(final QName qname) {
126 final DataSchemaNode childSchema = getSchema().dataChildByName(qname);
127 childNonNull(childSchema, qname, "Argument %s is not valid child of %s", qname, getSchema());
128 if (childSchema instanceof DataNodeContainer || childSchema instanceof ChoiceSchemaNode) {
129 @SuppressWarnings("unchecked")
130 final Class<? extends DataObject> childCls = (Class<? extends DataObject>)
131 factory().getRuntimeContext().getClassForSchema(childSchema);
132 return streamChild(childCls);
135 throw new UnsupportedOperationException("Unsupported child type " + childSchema.getClass());
139 private final LoadingCache<Absolute, RpcInputCodec<?>> rpcDataByPath =
140 CacheBuilder.newBuilder().build(new CacheLoader<>() {
142 public RpcInputCodec<?> load(final Absolute key) {
143 final ContainerLike schema = getRpcDataSchema(getSchema(), key);
144 @SuppressWarnings("unchecked")
145 final Class<? extends DataContainer> cls = (Class<? extends DataContainer>)
146 factory().getRuntimeContext().getClassForSchema(schema);
151 private final LoadingCache<Absolute, NotificationCodecContext<?>> notificationsByPath =
152 CacheBuilder.newBuilder().build(new CacheLoader<>() {
154 public NotificationCodecContext<?> load(final Absolute key) {
155 final SchemaTreeEffectiveStatement<?> stmt = getSchema().findSchemaTreeNode(key)
156 .orElseThrow(() -> new IllegalArgumentException("Cannot find statement at " + key));
157 checkArgument(stmt instanceof NotificationDefinition, "Statement %s is not a notification", stmt);
159 @SuppressWarnings("unchecked")
160 final Class<? extends Notification<?>> clz = (Class<? extends Notification<?>>)
161 factory().getRuntimeContext().getClassForSchema((NotificationDefinition) stmt);
162 return getNotification(clz);
166 private SchemaRootCodecContext(final DataContainerCodecPrototype<EffectiveModelContext> dataPrototype) {
167 super(dataPrototype);
171 * Creates RootNode from supplied CodecContextFactory.
174 * CodecContextFactory
175 * @return A new root node
177 static SchemaRootCodecContext<?> create(final CodecContextFactory factory) {
178 return new SchemaRootCodecContext<>(DataContainerCodecPrototype.rootPrototype(factory));
181 @SuppressWarnings("unchecked")
183 public <C extends DataObject> DataContainerCodecContext<C, ?> streamChild(final Class<C> childClass) {
184 return (DataContainerCodecContext<C, ?>) getOrRethrow(childrenByClass, childClass);
188 public <C extends DataObject> Optional<DataContainerCodecContext<C, ?>> possibleStreamChild(
189 final Class<C> childClass) {
190 throw new UnsupportedOperationException("Not supported");
194 public DataContainerCodecContext<?,?> yangPathArgumentChild(final PathArgument arg) {
195 return getOrRethrow(childrenByQName, arg.getNodeType());
199 public D deserialize(final NormalizedNode normalizedNode) {
200 throw new UnsupportedOperationException("Could not create Binding data representation for root");
203 ActionCodecContext getAction(final Class<? extends Action<?, ?, ?>> action) {
204 return getOrRethrow(actionsByClass, action);
207 NotificationCodecContext<?> getNotification(final Class<? extends Notification<?>> notification) {
208 return (NotificationCodecContext<?>) streamChild((Class<? extends DataObject>)notification);
211 NotificationCodecContext<?> getNotification(final Absolute notification) {
212 return getOrRethrow(notificationsByPath, notification);
215 ContainerNodeCodecContext<?> getRpc(final Class<? extends DataContainer> rpcInputOrOutput) {
216 return getOrRethrow(rpcDataByClass, rpcInputOrOutput);
219 RpcInputCodec<?> getRpc(final Absolute containerPath) {
220 return getOrRethrow(rpcDataByPath, containerPath);
223 DataContainerCodecContext<?, ?> createDataTreeChildContext(final Class<? extends DataObject> key) {
224 final QName qname = BindingReflections.findQName(key);
225 final DataSchemaNode childSchema = childNonNull(getSchema().dataChildByName(qname), key,
226 "%s is not top-level item.", key);
227 return DataContainerCodecPrototype.from(key, childSchema, factory()).get();
230 ActionCodecContext createActionContext(final Class<? extends Action<?, ?, ?>> action) {
231 if (KeyedListAction.class.isAssignableFrom(action)) {
232 return prepareActionContext(2, 3, 4, action, KeyedListAction.class);
233 } else if (Action.class.isAssignableFrom(action)) {
234 return prepareActionContext(1, 2, 3, action, Action.class);
236 throw new IllegalArgumentException("The specific action type does not exist for action " + action.getName());
239 private ActionCodecContext prepareActionContext(final int inputOffset, final int outputOffset,
240 final int expectedArgsLength, final Class<? extends Action<?, ?, ?>> action, final Class<?> actionType) {
241 final Optional<ParameterizedType> optParamType = ClassLoaderUtils.findParameterizedType(action, actionType);
242 checkState(optParamType.isPresent(), "%s does not specialize %s", action, actionType);
244 final ParameterizedType paramType = optParamType.get();
245 final Type[] args = paramType.getActualTypeArguments();
246 checkArgument(args.length == expectedArgsLength, "Unexpected (%s) Action generatic arguments", args.length);
247 final ActionDefinition schema = factory().getRuntimeContext().getActionDefinition(action);
248 return new ActionCodecContext(
249 DataContainerCodecPrototype.from(asClass(args[inputOffset], RpcInput.class), schema.getInput(),
251 DataContainerCodecPrototype.from(asClass(args[outputOffset], RpcOutput.class), schema.getOutput(),
255 private static <T extends DataObject> Class<? extends T> asClass(final Type type, final Class<T> target) {
256 verify(type instanceof Class, "Type %s is not a class", type);
257 return ((Class<?>) type).asSubclass(target);
261 * Returns RPC input or output schema based on supplied QName.
263 * @param rpc RPC Definition
264 * @param qname input or output QName with namespace same as RPC
265 * @return input or output schema. Returns null if RPC does not have input/output specified.
267 private static @Nullable ContainerLike getRpcDataSchema(final @NonNull RpcDefinition rpc,
268 final @NonNull QName qname) {
269 requireNonNull(rpc, "Rpc Schema must not be null");
270 switch (requireNonNull(qname, "QName must not be null").getLocalName()) {
272 return rpc.getInput();
274 return rpc.getOutput();
276 throw new IllegalArgumentException("Supplied qname " + qname
277 + " does not represent rpc input or output.");
282 * Returns RPC Input or Output Data container from RPC definition.
284 * @param schema SchemaContext in which lookup should be performed.
285 * @param path Schema path of RPC input/output data container
286 * @return Notification schema or null, if notification is not present in schema context.
288 @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
289 justification = "https://github.com/spotbugs/spotbugs/issues/811")
290 private static @Nullable ContainerLike getRpcDataSchema(final @NonNull EffectiveModelContext schema,
291 final @NonNull Absolute path) {
292 requireNonNull(schema, "Schema context must not be null.");
293 requireNonNull(path, "Schema path must not be null.");
294 final Iterator<QName> it = path.getNodeIdentifiers().iterator();
295 checkArgument(it.hasNext(), "Rpc must have QName.");
296 final QName rpcName = it.next();
297 checkArgument(it.hasNext(), "input or output must be part of path.");
298 final QName inOrOut = it.next();
299 for (final RpcDefinition potential : schema.getOperations()) {
300 if (rpcName.equals(potential.getQName())) {
301 return getRpcDataSchema(potential, inOrOut);
307 ChoiceNodeCodecContext<?> createChoiceDataContext(final Class<? extends DataObject> caseType) {
308 final Class<?> choiceClass = findCaseChoice(caseType);
309 checkArgument(choiceClass != null, "Class %s is not a valid case representation", caseType);
310 final DataSchemaNode schema = factory().getRuntimeContext().getSchemaDefinition(choiceClass);
311 checkArgument(schema instanceof ChoiceSchemaNode, "Class %s does not refer to a choice", caseType);
313 final DataContainerCodecContext<?, ChoiceSchemaNode> choice = DataContainerCodecPrototype.from(choiceClass,
314 (ChoiceSchemaNode)schema, factory()).get();
315 Verify.verify(choice instanceof ChoiceNodeCodecContext);
316 return (ChoiceNodeCodecContext<?>) choice;
320 protected Object deserializeObject(final NormalizedNode normalizedNode) {
321 throw new UnsupportedOperationException("Unable to deserialize root");
325 public InstanceIdentifier.PathArgument deserializePathArgument(final YangInstanceIdentifier.PathArgument arg) {
326 checkArgument(arg == null);
331 public YangInstanceIdentifier.PathArgument serializePathArgument(final InstanceIdentifier.PathArgument arg) {
332 checkArgument(arg == null);
337 public DataContainerCodecContext<?, ?> bindingPathArgumentChild(final InstanceIdentifier.PathArgument arg,
338 final List<PathArgument> builder) {
339 final Optional<? extends Class<? extends DataObject>> caseType = arg.getCaseType();
340 if (caseType.isPresent()) {
341 final @NonNull Class<? extends DataObject> type = caseType.orElseThrow();
342 final ChoiceNodeCodecContext<?> choice = choicesByClass.getUnchecked(type);
343 choice.addYangPathArgument(arg, builder);
344 final DataContainerCodecContext<?, ?> caze = choice.streamChild(type);
345 caze.addYangPathArgument(arg, builder);
346 return caze.bindingPathArgumentChild(arg, builder);
349 return super.bindingPathArgumentChild(arg, builder);
352 private static Class<?> findCaseChoice(final Class<? extends DataObject> caseClass) {
353 for (Type type : caseClass.getGenericInterfaces()) {
354 if (type instanceof Class) {
355 final Class<?> typeClass = (Class<?>) type;
356 if (ChoiceIn.class.isAssignableFrom(typeClass)) {
357 return typeClass.asSubclass(ChoiceIn.class);
365 private static <K,V> V getOrRethrow(final LoadingCache<K, V> cache, final K key) {
367 return cache.getUnchecked(key);
368 } catch (final UncheckedExecutionException e) {
369 final Throwable cause = e.getCause();
371 Throwables.throwIfUnchecked(cause);