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.generator.api;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkState;
12 import static java.util.Objects.requireNonNull;
14 import com.google.common.annotations.Beta;
15 import com.google.common.base.MoreObjects;
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.ImmutableMap;
20 import com.google.common.collect.ImmutableSet;
21 import com.google.common.collect.Iterables;
22 import java.util.AbstractMap.SimpleEntry;
23 import java.util.Collection;
24 import java.util.HashMap;
25 import java.util.HashSet;
27 import java.util.Map.Entry;
28 import java.util.Optional;
30 import org.eclipse.jdt.annotation.NonNull;
31 import org.eclipse.jdt.annotation.Nullable;
32 import org.opendaylight.mdsal.binding.model.api.DefaultType;
33 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
34 import org.opendaylight.mdsal.binding.model.api.MethodSignature;
35 import org.opendaylight.mdsal.binding.model.api.ParameterizedType;
36 import org.opendaylight.mdsal.binding.model.api.Type;
37 import org.opendaylight.mdsal.binding.model.api.type.builder.GeneratedTypeBuilder;
38 import org.opendaylight.yangtools.concepts.Immutable;
39 import org.opendaylight.yangtools.yang.binding.Action;
40 import org.opendaylight.yangtools.yang.binding.Augmentation;
41 import org.opendaylight.yangtools.yang.common.QName;
42 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
43 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
44 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
45 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
46 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
47 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
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.DocumentedNode.WithStatus;
51 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
52 import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
53 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
54 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
55 import org.opendaylight.yangtools.yang.model.util.EffectiveAugmentationSchema;
56 import org.opendaylight.yangtools.yang.model.util.SchemaNodeUtils;
57 import org.slf4j.Logger;
58 import org.slf4j.LoggerFactory;
61 * Runtime Context for Java YANG Binding classes. It provides information derived from the backing effective model,
62 * which is not captured in generated classes (and hence cannot be obtained from {@code BindingReflections}.
64 * <p>Some of this information are for example list of all available children for cases
65 * {@link #getChoiceCaseChildren(DataNodeContainer)}, since choices are augmentable and new choices may be introduced
66 * by additional models. Same goes for all possible augmentations.
69 public final class BindingRuntimeContext implements SchemaContextProvider, Immutable {
70 private static final Logger LOG = LoggerFactory.getLogger(BindingRuntimeContext.class);
72 private final @NonNull BindingRuntimeTypes runtimeTypes;
73 private final @NonNull ClassLoadingStrategy strategy;
75 private final LoadingCache<QName, Class<?>> identityClasses = CacheBuilder.newBuilder().weakValues().build(
76 new CacheLoader<QName, Class<?>>() {
78 public Class<?> load(final QName key) {
79 final Optional<Type> identityType = runtimeTypes.findIdentity(key);
80 checkArgument(identityType.isPresent(), "Supplied QName %s is not a valid identity", key);
82 return strategy.loadClass(identityType.get());
83 } catch (final ClassNotFoundException e) {
84 throw new IllegalArgumentException("Required class " + identityType + "was not found.", e);
89 private BindingRuntimeContext(final BindingRuntimeTypes runtimeTypes, final ClassLoadingStrategy strategy) {
90 this.runtimeTypes = requireNonNull(runtimeTypes);
91 this.strategy = requireNonNull(strategy);
95 * Creates Binding Runtime Context from supplied class loading strategy and schema context.
97 * @param strategy Class loading strategy to retrieve generated Binding classes
98 * @param runtimeTypes Binding classes to YANG schema mapping
99 * @return A new instance
101 public static @NonNull BindingRuntimeContext create(final BindingRuntimeTypes runtimeTypes,
102 final ClassLoadingStrategy strategy) {
103 return new BindingRuntimeContext(runtimeTypes, strategy);
107 * Returns a class loading strategy associated with this binding runtime context
108 * which is used to load classes.
110 * @return Class loading strategy.
112 public @NonNull ClassLoadingStrategy getStrategy() {
117 * Returns an stable immutable view of schema context associated with this Binding runtime context.
119 * @return stable view of schema context
122 public SchemaContext getSchemaContext() {
123 return runtimeTypes.getSchemaContext();
127 * Returns schema of augmentation.
129 * <p>Returned schema is schema definition from which augmentation class was generated.
130 * This schema is isolated from other augmentations. This means it contains
131 * augmentation definition as was present in original YANG module.
133 * <p>Children of returned schema does not contain any additional augmentations,
134 * which may be present in runtime for them, thus returned schema is unsuitable
135 * for use for validation of data.
137 * <p>For retrieving {@link AugmentationSchemaNode}, which will contains
138 * full model for child nodes, you should use method
139 * {@link #getResolvedAugmentationSchema(DataNodeContainer, Class)}
140 * which will return augmentation schema derived from supplied augmentation target
143 * @param augClass Augmentation class
144 * @return Schema of augmentation or null if augmentaiton is not known in this context
145 * @throws IllegalArgumentException If supplied class is not an augmentation
147 public @Nullable AugmentationSchemaNode getAugmentationDefinition(final Class<?> augClass) {
148 checkArgument(Augmentation.class.isAssignableFrom(augClass),
149 "Class %s does not represent augmentation", augClass);
150 return runtimeTypes.findAugmentation(DefaultType.of(augClass)).orElse(null);
154 * Returns defining {@link DataSchemaNode} for supplied class.
156 * <p>Returned schema is schema definition from which class was generated.
157 * This schema may be isolated from augmentations, if supplied class
158 * represent node, which was child of grouping or augmentation.
160 * <p>For getting augmentation schema from augmentation class use
161 * {@link #getAugmentationDefinition(Class)} instead.
163 * @param cls Class which represents list, container, choice or case.
164 * @return Schema node, from which class was generated.
166 public DataSchemaNode getSchemaDefinition(final Class<?> cls) {
167 checkArgument(!Augmentation.class.isAssignableFrom(cls), "Supplied class must not be an augmentation (%s is)",
169 checkArgument(!Action.class.isAssignableFrom(cls), "Supplied class must not be an action (%s is)", cls);
170 return (DataSchemaNode) runtimeTypes.findSchema(DefaultType.of(cls)).orElse(null);
173 public ActionDefinition getActionDefinition(final Class<? extends Action<?, ?, ?>> cls) {
174 return (ActionDefinition) runtimeTypes.findSchema(DefaultType.of(cls)).orElse(null);
177 public Entry<AugmentationIdentifier, AugmentationSchemaNode> getResolvedAugmentationSchema(
178 final DataNodeContainer target, final Class<? extends Augmentation<?>> aug) {
179 final AugmentationSchemaNode origSchema = getAugmentationDefinition(aug);
180 checkArgument(origSchema != null, "Augmentation %s is not known in current schema context", aug);
182 * FIXME: Validate augmentation schema lookup
184 * Currently this algorithm, does not verify if instantiated child nodes
185 * are real one derived from augmentation schema. The problem with
186 * full validation is, if user used copy builders, he may use
187 * augmentation which was generated for different place.
189 * If this augmentations have same definition, we emit same identifier
190 * with data and it is up to underlying user to validate data.
193 final Set<QName> childNames = new HashSet<>();
194 final Set<DataSchemaNode> realChilds = new HashSet<>();
195 for (final DataSchemaNode child : origSchema.getChildNodes()) {
196 final DataSchemaNode dataChildQNname = target.getDataChildByName(child.getQName());
197 final String childLocalName = child.getQName().getLocalName();
198 if (dataChildQNname == null) {
199 for (DataSchemaNode dataSchemaNode : target.getChildNodes()) {
200 if (childLocalName.equals(dataSchemaNode.getQName().getLocalName())) {
201 realChilds.add(dataSchemaNode);
202 childNames.add(dataSchemaNode.getQName());
206 realChilds.add(dataChildQNname);
207 childNames.add(child.getQName());
211 final AugmentationIdentifier identifier = AugmentationIdentifier.create(childNames);
212 final AugmentationSchemaNode proxy = new EffectiveAugmentationSchema(origSchema, realChilds);
213 return new SimpleEntry<>(identifier, proxy);
217 * Returns resolved case schema for supplied class.
219 * @param schema Resolved parent choice schema
220 * @param childClass Class representing case.
221 * @return Optionally a resolved case schema,.empty if the choice is not legal in
223 * @throws IllegalArgumentException If supplied class does not represent case.
225 public Optional<CaseSchemaNode> getCaseSchemaDefinition(final ChoiceSchemaNode schema, final Class<?> childClass) {
226 final DataSchemaNode origSchema = getSchemaDefinition(childClass);
227 checkArgument(origSchema instanceof CaseSchemaNode, "Supplied schema %s is not case.", origSchema);
229 /* FIXME: Make sure that if there are multiple augmentations of same
230 * named case, with same structure we treat it as equals
231 * this is due property of Binding specification and copy builders
232 * that user may be unaware that he is using incorrect case
233 * which was generated for choice inside grouping.
235 final Optional<CaseSchemaNode> found = findInstantiatedCase(schema, (CaseSchemaNode) origSchema);
240 * Returns schema ({@link DataSchemaNode}, {@link AugmentationSchemaNode} or {@link TypeDefinition})
241 * from which supplied class was generated. Returned schema may be augmented with
242 * additional information, which was not available at compile type
243 * (e.g. third party augmentations).
245 * @param type Binding Class for which schema should be retrieved.
246 * @return Instance of generated type (definition of Java API), along with
247 * {@link DataSchemaNode}, {@link AugmentationSchemaNode} or {@link TypeDefinition}
248 * which was used to generate supplied class.
250 public Entry<GeneratedType, WithStatus> getTypeWithSchema(final Class<?> type) {
251 return getTypeWithSchema(DefaultType.of(type));
254 private Entry<GeneratedType, WithStatus> getTypeWithSchema(final Type referencedType) {
255 final WithStatus schema = runtimeTypes.findSchema(referencedType).orElseThrow(
256 () -> new NullPointerException("Failed to find schema for type " + referencedType));
257 final Type definedType = runtimeTypes.findType(schema).orElseThrow(
258 () -> new NullPointerException("Failed to find defined type for " + referencedType + " schema " + schema));
260 if (definedType instanceof GeneratedTypeBuilder) {
261 return new SimpleEntry<>(((GeneratedTypeBuilder) definedType).build(), schema);
263 checkArgument(definedType instanceof GeneratedType, "Type %s is not a GeneratedType", referencedType);
264 return new SimpleEntry<>((GeneratedType) definedType, schema);
267 public ImmutableMap<Type, Entry<Type, Type>> getChoiceCaseChildren(final DataNodeContainer schema) {
268 final Map<Type, Entry<Type, Type>> childToCase = new HashMap<>();
270 for (final ChoiceSchemaNode choice : Iterables.filter(schema.getChildNodes(), ChoiceSchemaNode.class)) {
271 final ChoiceSchemaNode originalChoice = getOriginalSchema(choice);
272 final Optional<Type> optType = runtimeTypes.findType(originalChoice);
273 checkState(optType.isPresent(), "Failed to find generated type for choice %s", originalChoice);
274 final Type choiceType = optType.get();
276 for (Type caze : runtimeTypes.findCases(choiceType)) {
277 final Entry<Type,Type> caseIdentifier = new SimpleEntry<>(choiceType, caze);
278 final HashSet<Type> caseChildren = new HashSet<>();
279 if (caze instanceof GeneratedTypeBuilder) {
280 caze = ((GeneratedTypeBuilder) caze).build();
282 collectAllContainerTypes((GeneratedType) caze, caseChildren);
283 for (final Type caseChild : caseChildren) {
284 childToCase.put(caseChild, caseIdentifier);
288 return ImmutableMap.copyOf(childToCase);
291 public Set<Class<?>> getCases(final Class<?> choice) {
292 final Collection<Type> cazes = runtimeTypes.findCases(DefaultType.of(choice));
293 final Set<Class<?>> ret = new HashSet<>(cazes.size());
294 for (final Type caze : cazes) {
296 final Class<?> c = strategy.loadClass(caze);
298 } catch (final ClassNotFoundException e) {
299 LOG.warn("Failed to load class for case {}, ignoring it", caze, e);
305 public Class<?> getClassForSchema(final SchemaNode childSchema) {
306 final SchemaNode origSchema = getOriginalSchema(childSchema);
307 final Optional<Type> clazzType = runtimeTypes.findType(origSchema);
308 checkArgument(clazzType.isPresent(), "Failed to find binding type for %s (original %s)",
309 childSchema, origSchema);
312 return strategy.loadClass(clazzType.get());
313 } catch (final ClassNotFoundException e) {
314 throw new IllegalStateException(e);
318 public ImmutableMap<AugmentationIdentifier, Type> getAvailableAugmentationTypes(final DataNodeContainer container) {
319 final Map<AugmentationIdentifier, Type> identifierToType = new HashMap<>();
320 if (container instanceof AugmentationTarget) {
321 for (final AugmentationSchemaNode augment : ((AugmentationTarget) container).getAvailableAugmentations()) {
322 // Augmentation must have child nodes if is to be used with Binding classes
323 AugmentationSchemaNode augOrig = augment;
324 while (augOrig.getOriginalDefinition().isPresent()) {
325 augOrig = augOrig.getOriginalDefinition().get();
328 if (!augment.getChildNodes().isEmpty()) {
329 final Optional<Type> augType = runtimeTypes.findType(augOrig);
330 if (augType.isPresent()) {
331 identifierToType.put(getAugmentationIdentifier(augment), augType.get());
337 return ImmutableMap.copyOf(identifierToType);
340 public Class<?> getIdentityClass(final QName input) {
341 return identityClasses.getUnchecked(input);
345 public String toString() {
346 return MoreObjects.toStringHelper(this)
347 .add("ClassLoadingStrategy", strategy)
348 .add("runtimeTypes", runtimeTypes)
352 private static AugmentationIdentifier getAugmentationIdentifier(final AugmentationSchemaNode augment) {
353 // FIXME: use DataSchemaContextNode.augmentationIdentifierFrom() once it does caching
354 return AugmentationIdentifier.create(augment.getChildNodes().stream().map(DataSchemaNode::getQName)
355 .collect(ImmutableSet.toImmutableSet()));
358 private static Set<Type> collectAllContainerTypes(final GeneratedType type, final Set<Type> collection) {
359 for (final MethodSignature definition : type.getMethodDefinitions()) {
360 Type childType = definition.getReturnType();
361 if (childType instanceof ParameterizedType) {
362 childType = ((ParameterizedType) childType).getActualTypeArguments()[0];
364 if (childType instanceof GeneratedType || childType instanceof GeneratedTypeBuilder) {
365 collection.add(childType);
368 for (final Type parent : type.getImplements()) {
369 if (parent instanceof GeneratedType) {
370 collectAllContainerTypes((GeneratedType) parent, collection);
376 private static <T extends SchemaNode> T getOriginalSchema(final T choice) {
377 @SuppressWarnings("unchecked")
378 final T original = (T) SchemaNodeUtils.getRootOriginalIfPossible(choice);
379 if (original != null) {
385 private static Optional<CaseSchemaNode> findInstantiatedCase(final ChoiceSchemaNode instantiatedChoice,
386 final CaseSchemaNode originalDefinition) {
387 CaseSchemaNode potential = instantiatedChoice.getCaseNodeByName(originalDefinition.getQName());
388 if (originalDefinition.equals(potential)) {
389 return Optional.of(potential);
391 if (potential != null) {
392 SchemaNode potentialRoot = SchemaNodeUtils.getRootOriginalIfPossible(potential);
393 if (originalDefinition.equals(potentialRoot)) {
394 return Optional.of(potential);
398 // We try to find case by name, then lookup its root definition
399 // and compare it with original definition
400 // This solves case, if choice was inside grouping
401 // which was used in different module and thus namespaces are
402 // different, but local names are still same.
404 // Still we need to check equality of definition, because local name is not
405 // sufficient to uniquelly determine equality of cases
407 for (CaseSchemaNode caze : instantiatedChoice.findCaseNodes(originalDefinition.getQName().getLocalName())) {
408 if (originalDefinition.equals(SchemaNodeUtils.getRootOriginalIfPossible(caze))) {
409 return Optional.of(caze);
412 return Optional.empty();