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.runtime.api;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkState;
13 import com.google.common.annotations.Beta;
14 import com.google.common.cache.CacheBuilder;
15 import com.google.common.cache.CacheLoader;
16 import com.google.common.cache.LoadingCache;
17 import com.google.common.collect.ImmutableMap;
18 import com.google.common.collect.ImmutableSet;
19 import com.google.common.collect.Iterables;
20 import java.util.AbstractMap.SimpleEntry;
21 import java.util.Collection;
22 import java.util.HashMap;
23 import java.util.HashSet;
25 import java.util.Map.Entry;
26 import java.util.Optional;
28 import org.eclipse.jdt.annotation.NonNull;
29 import org.eclipse.jdt.annotation.Nullable;
30 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
31 import org.opendaylight.mdsal.binding.model.api.MethodSignature;
32 import org.opendaylight.mdsal.binding.model.api.ParameterizedType;
33 import org.opendaylight.mdsal.binding.model.api.Type;
34 import org.opendaylight.mdsal.binding.model.api.type.builder.GeneratedTypeBuilder;
35 import org.opendaylight.yangtools.yang.binding.Action;
36 import org.opendaylight.yangtools.yang.binding.Augmentation;
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.AugmentationIdentifier;
40 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
41 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
42 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
43 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
44 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
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.DerivableSchemaNode;
48 import org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus;
49 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
50 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
51 import org.opendaylight.yangtools.yang.model.util.EffectiveAugmentationSchema;
52 import org.slf4j.Logger;
53 import org.slf4j.LoggerFactory;
56 * Runtime Context for Java YANG Binding classes. It provides information derived from the backing effective model,
57 * which is not captured in generated classes (and hence cannot be obtained from {@code BindingReflections}.
59 * <p>Some of this information are for example list of all available children for cases
60 * {@link #getChoiceCaseChildren(DataNodeContainer)}, since choices are augmentable and new choices may be introduced
61 * by additional models. Same goes for all possible augmentations.
64 public abstract class AbstractBindingRuntimeContext implements BindingRuntimeContext {
65 private static final Logger LOG = LoggerFactory.getLogger(AbstractBindingRuntimeContext.class);
67 private final LoadingCache<QName, Class<?>> identityClasses = CacheBuilder.newBuilder().weakValues().build(
68 new CacheLoader<QName, Class<?>>() {
70 public Class<?> load(final QName key) {
71 final Optional<Type> identityType = getTypes().findIdentity(key);
72 checkArgument(identityType.isPresent(), "Supplied QName %s is not a valid identity", key);
74 return loadClass(identityType.get());
75 } catch (final ClassNotFoundException e) {
76 throw new IllegalArgumentException("Required class " + identityType + "was not found.", e);
82 public final <T extends Augmentation<?>> AugmentationSchemaNode getAugmentationDefinition(final Class<T> augClass) {
83 return getTypes().findAugmentation(Type.of(augClass)).orElse(null);
87 public final DataSchemaNode getSchemaDefinition(final Class<?> cls) {
88 checkArgument(!Augmentation.class.isAssignableFrom(cls), "Supplied class must not be an augmentation (%s is)",
90 checkArgument(!Action.class.isAssignableFrom(cls), "Supplied class must not be an action (%s is)", cls);
91 return (DataSchemaNode) getTypes().findSchema(Type.of(cls)).orElse(null);
95 public final DataSchemaNode findChildSchemaDefinition(final DataNodeContainer parentSchema,
96 final QNameModule parentNamespace, final Class<?> childClass) {
97 final DataSchemaNode origDef = getSchemaDefinition(childClass);
98 // Direct instantiation or use in same module in which grouping was defined.
99 DataSchemaNode sameName;
101 sameName = parentSchema.dataChildByName(origDef.getQName());
102 } catch (final IllegalArgumentException e) {
103 LOG.trace("Failed to find schema for {}", origDef, e);
107 final DataSchemaNode childSchema;
108 if (sameName != null) {
110 // - exactly same schema node, or
111 // - instantiated node was added via uses statement and is instantiation of same grouping
112 if (origDef.equals(sameName) || origDef.equals(getRootOriginalIfPossible(sameName))) {
113 childSchema = sameName;
115 // Node has same name, but clearly is different
119 // We are looking for instantiation via uses in other module
120 final QName instantiedName = origDef.getQName().bindTo(parentNamespace);
121 final DataSchemaNode potential = parentSchema.dataChildByName(instantiedName);
122 // We check if it is really instantiated from same definition as class was derived
123 if (potential != null && origDef.equals(getRootOriginalIfPossible(potential))) {
124 childSchema = potential;
133 private static @Nullable SchemaNode getRootOriginalIfPossible(final SchemaNode data) {
134 SchemaNode previous = null;
135 SchemaNode next = getOriginalIfPossible(data);
136 while (next != null) {
138 next = getOriginalIfPossible(next);
143 private static @Nullable SchemaNode getOriginalIfPossible(final SchemaNode node) {
144 return node instanceof DerivableSchemaNode ? ((DerivableSchemaNode) node).getOriginal().orElse(null) : null;
148 public final ActionDefinition getActionDefinition(final Class<? extends Action<?, ?, ?>> cls) {
149 return (ActionDefinition) getTypes().findSchema(Type.of(cls)).orElse(null);
153 public final Absolute getActionIdentifier(final Class<? extends Action<?, ?, ?>> cls) {
154 return getTypes().findSchemaNodeIdentifier(Type.of(cls)).orElse(null);
158 public final Entry<AugmentationIdentifier, AugmentationSchemaNode> getResolvedAugmentationSchema(
159 final DataNodeContainer target, final Class<? extends Augmentation<?>> aug) {
160 final AugmentationSchemaNode origSchema = getAugmentationDefinition(aug);
161 checkArgument(origSchema != null, "Augmentation %s is not known in current schema context", aug);
163 * FIXME: Validate augmentation schema lookup
165 * Currently this algorithm, does not verify if instantiated child nodes
166 * are real one derived from augmentation schema. The problem with
167 * full validation is, if user used copy builders, he may use
168 * augmentation which was generated for different place.
170 * If this augmentations have same definition, we emit same identifier
171 * with data and it is up to underlying user to validate data.
174 final Set<QName> childNames = new HashSet<>();
175 final Set<DataSchemaNode> realChilds = new HashSet<>();
176 for (final DataSchemaNode child : origSchema.getChildNodes()) {
177 final DataSchemaNode dataChildQNname = target.dataChildByName(child.getQName());
178 final String childLocalName = child.getQName().getLocalName();
179 if (dataChildQNname == null) {
180 for (DataSchemaNode dataSchemaNode : target.getChildNodes()) {
181 if (childLocalName.equals(dataSchemaNode.getQName().getLocalName())) {
182 realChilds.add(dataSchemaNode);
183 childNames.add(dataSchemaNode.getQName());
187 realChilds.add(dataChildQNname);
188 childNames.add(child.getQName());
192 final AugmentationIdentifier identifier = AugmentationIdentifier.create(childNames);
193 final AugmentationSchemaNode proxy = new EffectiveAugmentationSchema(origSchema, realChilds);
194 return new SimpleEntry<>(identifier, proxy);
198 public final Optional<CaseSchemaNode> getCaseSchemaDefinition(final ChoiceSchemaNode schema,
199 final Class<?> childClass) {
200 final DataSchemaNode origSchema = getSchemaDefinition(childClass);
201 checkArgument(origSchema instanceof CaseSchemaNode, "Supplied schema %s is not case.", origSchema);
203 /* FIXME: Make sure that if there are multiple augmentations of same
204 * named case, with same structure we treat it as equals
205 * this is due property of Binding specification and copy builders
206 * that user may be unaware that he is using incorrect case
207 * which was generated for choice inside grouping.
209 return findInstantiatedCase(schema, (CaseSchemaNode) origSchema);
213 public final Entry<GeneratedType, WithStatus> getTypeWithSchema(final Class<?> type) {
214 return getTypeWithSchema(getTypes(), Type.of(type));
217 private static @NonNull Entry<GeneratedType, WithStatus> getTypeWithSchema(final BindingRuntimeTypes types,
218 final Type referencedType) {
219 final WithStatus schema = types.findSchema(referencedType).orElseThrow(
220 () -> new NullPointerException("Failed to find schema for type " + referencedType));
221 final Type definedType = types.findType(schema).orElseThrow(
222 () -> new NullPointerException("Failed to find defined type for " + referencedType + " schema " + schema));
224 if (definedType instanceof GeneratedTypeBuilder) {
225 return new SimpleEntry<>(((GeneratedTypeBuilder) definedType).build(), schema);
227 checkArgument(definedType instanceof GeneratedType, "Type %s is not a GeneratedType", referencedType);
228 return new SimpleEntry<>((GeneratedType) definedType, schema);
232 public final Map<Type, Entry<Type, Type>> getChoiceCaseChildren(final DataNodeContainer schema) {
233 return getChoiceCaseChildren(getTypes(), schema);
236 private static @NonNull ImmutableMap<Type, Entry<Type, Type>> getChoiceCaseChildren(final BindingRuntimeTypes types,
237 final DataNodeContainer schema) {
238 final Map<Type, Entry<Type, Type>> childToCase = new HashMap<>();
240 for (final ChoiceSchemaNode choice : Iterables.filter(schema.getChildNodes(), ChoiceSchemaNode.class)) {
241 final ChoiceSchemaNode originalChoice = getOriginalSchema(choice);
242 final Optional<Type> optType = types.findType(originalChoice);
243 checkState(optType.isPresent(), "Failed to find generated type for choice %s", originalChoice);
244 final Type choiceType = optType.get();
246 for (Type caze : types.findCases(choiceType)) {
247 final Entry<Type,Type> caseIdentifier = new SimpleEntry<>(choiceType, caze);
248 final HashSet<Type> caseChildren = new HashSet<>();
249 if (caze instanceof GeneratedTypeBuilder) {
250 caze = ((GeneratedTypeBuilder) caze).build();
252 collectAllContainerTypes((GeneratedType) caze, caseChildren);
253 for (final Type caseChild : caseChildren) {
254 childToCase.put(caseChild, caseIdentifier);
258 return ImmutableMap.copyOf(childToCase);
262 public final Set<Class<?>> getCases(final Class<?> choice) {
263 final Collection<Type> cazes = getTypes().findCases(Type.of(choice));
264 final Set<Class<?>> ret = new HashSet<>(cazes.size());
265 for (final Type caze : cazes) {
267 ret.add(loadClass(caze));
268 } catch (final ClassNotFoundException e) {
269 LOG.warn("Failed to load class for case {}, ignoring it", caze, e);
276 public final Class<?> getClassForSchema(final SchemaNode childSchema) {
277 final SchemaNode origSchema = getOriginalSchema(childSchema);
278 final Optional<Type> clazzType = getTypes().findType(origSchema);
279 checkArgument(clazzType.isPresent(), "Failed to find binding type for %s (original %s)",
280 childSchema, origSchema);
283 return loadClass(clazzType.get());
284 } catch (final ClassNotFoundException e) {
285 throw new IllegalStateException(e);
290 public final ImmutableMap<AugmentationIdentifier, Type> getAvailableAugmentationTypes(
291 final DataNodeContainer container) {
292 if (container instanceof AugmentationTarget) {
293 final Map<AugmentationIdentifier, Type> identifierToType = new HashMap<>();
294 final BindingRuntimeTypes types = getTypes();
295 for (final AugmentationSchemaNode augment : ((AugmentationTarget) container).getAvailableAugmentations()) {
296 // Augmentation must have child nodes if is to be used with Binding classes
297 AugmentationSchemaNode augOrig = augment;
298 while (augOrig.getOriginalDefinition().isPresent()) {
299 augOrig = augOrig.getOriginalDefinition().get();
302 if (!augment.getChildNodes().isEmpty()) {
303 final Optional<Type> augType = types.findType(augOrig);
304 if (augType.isPresent()) {
305 identifierToType.put(getAugmentationIdentifier(augment), augType.get());
309 return ImmutableMap.copyOf(identifierToType);
312 return ImmutableMap.of();
316 public final Class<?> getIdentityClass(final QName input) {
317 return identityClasses.getUnchecked(input);
320 private static AugmentationIdentifier getAugmentationIdentifier(final AugmentationSchemaNode augment) {
321 // FIXME: use DataSchemaContextNode.augmentationIdentifierFrom() once it does caching
322 return AugmentationIdentifier.create(augment.getChildNodes().stream().map(DataSchemaNode::getQName)
323 .collect(ImmutableSet.toImmutableSet()));
326 private static Set<Type> collectAllContainerTypes(final GeneratedType type, final Set<Type> collection) {
327 for (final MethodSignature definition : type.getMethodDefinitions()) {
328 Type childType = definition.getReturnType();
329 if (childType instanceof ParameterizedType) {
330 childType = ((ParameterizedType) childType).getActualTypeArguments()[0];
332 if (childType instanceof GeneratedType || childType instanceof GeneratedTypeBuilder) {
333 collection.add(childType);
336 for (final Type parent : type.getImplements()) {
337 if (parent instanceof GeneratedType) {
338 collectAllContainerTypes((GeneratedType) parent, collection);
344 private static <T extends SchemaNode> T getOriginalSchema(final T choice) {
345 @SuppressWarnings("unchecked")
346 final T original = (T) originalNodeOf(choice);
347 if (original != null) {
353 private static @NonNull Optional<CaseSchemaNode> findInstantiatedCase(final ChoiceSchemaNode instantiatedChoice,
354 final CaseSchemaNode originalDefinition) {
355 CaseSchemaNode potential = instantiatedChoice.findCase(originalDefinition.getQName()).orElse(null);
356 if (originalDefinition.equals(potential)) {
357 return Optional.of(potential);
359 if (potential != null) {
360 SchemaNode potentialRoot = originalNodeOf(potential);
361 if (originalDefinition.equals(potentialRoot)) {
362 return Optional.of(potential);
366 // We try to find case by name, then lookup its root definition
367 // and compare it with original definition
368 // This solves case, if choice was inside grouping
369 // which was used in different module and thus namespaces are
370 // different, but local names are still same.
372 // Still we need to check equality of definition, because local name is not
373 // sufficient to uniquelly determine equality of cases
375 for (CaseSchemaNode caze : instantiatedChoice.findCaseNodes(originalDefinition.getQName().getLocalName())) {
376 if (originalDefinition.equals(originalNodeOf(caze))) {
377 return Optional.of(caze);
380 return Optional.empty();
383 private static @Nullable SchemaNode originalNodeOf(final SchemaNode node) {
384 return node instanceof DerivableSchemaNode ? ((DerivableSchemaNode) node).getOriginal().orElse(null) : null;