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.util;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkState;
13 import com.google.common.base.Optional;
14 import com.google.common.base.Preconditions;
15 import com.google.common.cache.CacheBuilder;
16 import com.google.common.cache.CacheLoader;
17 import com.google.common.cache.LoadingCache;
18 import com.google.common.collect.BiMap;
19 import com.google.common.collect.HashBiMap;
20 import com.google.common.collect.ImmutableMap;
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;
29 import javax.annotation.Nullable;
30 import org.opendaylight.mdsal.binding.generator.api.BindingRuntimeTypes;
31 import org.opendaylight.mdsal.binding.generator.api.ClassLoadingStrategy;
32 import org.opendaylight.mdsal.binding.generator.impl.BindingGeneratorImpl;
33 import org.opendaylight.mdsal.binding.generator.impl.BindingSchemaContextUtils;
34 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
35 import org.opendaylight.mdsal.binding.model.api.MethodSignature;
36 import org.opendaylight.mdsal.binding.model.api.ParameterizedType;
37 import org.opendaylight.mdsal.binding.model.api.Type;
38 import org.opendaylight.mdsal.binding.model.api.JavaTypeName;
39 import org.opendaylight.mdsal.binding.model.api.type.builder.GeneratedTypeBuilder;
40 import org.opendaylight.mdsal.binding.model.util.ReferencedTypeImpl;
41 import org.opendaylight.yangtools.concepts.Immutable;
42 import org.opendaylight.yangtools.yang.binding.Augmentation;
43 import org.opendaylight.yangtools.yang.binding.BindingMapping;
44 import org.opendaylight.yangtools.yang.common.QName;
45 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
46 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
47 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
48 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
49 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
50 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
51 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
52 import org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus;
53 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
54 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
55 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
56 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
57 import org.opendaylight.yangtools.yang.model.util.EffectiveAugmentationSchema;
58 import org.opendaylight.yangtools.yang.model.util.SchemaNodeUtils;
59 import org.slf4j.Logger;
60 import org.slf4j.LoggerFactory;
64 * Runtime Context for Java YANG Binding classes
67 * Runtime Context provides additional insight in Java YANG Binding,
68 * binding classes and underlying YANG schema, it contains
69 * runtime information, which could not be derived from generated
70 * classes alone using {@link org.opendaylight.yangtools.yang.binding.util.BindingReflections}.
72 * Some of this information are for example list of all available
73 * children for cases {@link #getChoiceCaseChildren(DataNodeContainer)}, since
74 * choices are augmentable and new choices may be introduced by additional models.
76 * Same goes for all possible augmentations.
79 public class BindingRuntimeContext implements Immutable {
80 private static final Logger LOG = LoggerFactory.getLogger(BindingRuntimeContext.class);
81 private static final char DOT = '.';
83 private final BindingRuntimeTypes runtimeTypes;
84 private final ClassLoadingStrategy strategy;
85 private final SchemaContext schemaContext;
87 private final LoadingCache<QName, Class<?>> identityClasses = CacheBuilder.newBuilder().weakValues().build(
88 new CacheLoader<QName, Class<?>>() {
90 public Class<?> load(final QName key) {
91 final java.util.Optional<Type> identityType = runtimeTypes.findIdentity(key);
92 checkArgument(identityType.isPresent(), "Supplied QName %s is not a valid identity", key);
94 return strategy.loadClass(identityType.get());
95 } catch (final ClassNotFoundException e) {
96 throw new IllegalArgumentException("Required class " + identityType + "was not found.", e);
101 private BindingRuntimeContext(final ClassLoadingStrategy strategy, final SchemaContext schema) {
102 this.strategy = strategy;
103 this.schemaContext = schema;
104 runtimeTypes = new BindingGeneratorImpl().generateTypeMapping(schema);
109 * Creates Binding Runtime Context from supplied class loading strategy and schema context.
111 * @param strategy Class loading strategy to retrieve generated Binding classes
112 * @param ctx Schema Context which describes YANG model and to which Binding classes should be mapped
113 * @return Instance of BindingRuntimeContext for supplied schema context.
115 public static final BindingRuntimeContext create(final ClassLoadingStrategy strategy, final SchemaContext ctx) {
116 return new BindingRuntimeContext(strategy, ctx);
120 * Returns a class loading strategy associated with this binding runtime context
121 * which is used to load classes.
123 * @return Class loading strategy.
125 public ClassLoadingStrategy getStrategy() {
130 * Returns an stable immutable view of schema context associated with this Binding runtime context.
132 * @return stable view of schema context
134 public SchemaContext getSchemaContext() {
135 return schemaContext;
139 * Returns schema of augmentation
141 * Returned schema is schema definition from which augmentation class was generated.
142 * This schema is isolated from other augmentations. This means it contains
143 * augmentation definition as was present in original YANG module.
145 * Children of returned schema does not contain any additional augmentations,
146 * which may be present in runtime for them, thus returned schema is unsuitable
147 * for use for validation of data.
149 * For retrieving {@link AugmentationSchemaNode}, which will contains
150 * full model for child nodes, you should use method {@link #getResolvedAugmentationSchema(DataNodeContainer, Class)}
151 * which will return augmentation schema derived from supplied augmentation target
154 * @param augClass Augmentation class
155 * @return Schema of augmentation or null if augmentaiton is not known in this context
156 * @throws IllegalArgumentException If supplied class is not an augmentation
158 public @Nullable AugmentationSchemaNode getAugmentationDefinition(final Class<?> augClass) {
159 checkArgument(Augmentation.class.isAssignableFrom(augClass),
160 "Class %s does not represent augmentation", augClass);
161 return runtimeTypes.findAugmentation(referencedType(augClass)).orElse(null);
165 * Returns defining {@link DataSchemaNode} for supplied class.
168 * Returned schema is schema definition from which class was generated.
169 * This schema may be isolated from augmentations, if supplied class
170 * represent node, which was child of grouping or augmentation.
172 * For getting augmentation schema from augmentation class use
173 * {@link #getAugmentationDefinition(Class)} instead.
175 * @param cls Class which represents list, container, choice or case.
176 * @return Schema node, from which class was generated.
178 public DataSchemaNode getSchemaDefinition(final Class<?> cls) {
179 checkArgument(!Augmentation.class.isAssignableFrom(cls), "Supplied class must not be augmentation (%s is)",
181 return (DataSchemaNode) runtimeTypes.findSchema(referencedType(cls)).orElse(null);
184 public Entry<AugmentationIdentifier, AugmentationSchemaNode> getResolvedAugmentationSchema(
185 final DataNodeContainer target, final Class<? extends Augmentation<?>> aug) {
186 final AugmentationSchemaNode origSchema = getAugmentationDefinition(aug);
187 checkArgument(origSchema != null, "Augmentation %s is not known in current schema context", aug);
189 * FIXME: Validate augmentation schema lookup
191 * Currently this algorithm, does not verify if instantiated child nodes
192 * are real one derived from augmentation schema. The problem with
193 * full validation is, if user used copy builders, he may use
194 * augmentation which was generated for different place.
196 * If this augmentations have same definition, we emit same identifier
197 * with data and it is up to underlying user to validate data.
200 final Set<QName> childNames = new HashSet<>();
201 final Set<DataSchemaNode> realChilds = new HashSet<>();
202 for (final DataSchemaNode child : origSchema.getChildNodes()) {
203 final DataSchemaNode dataChildQNname = target.getDataChildByName(child.getQName());
204 final String childLocalName = child.getQName().getLocalName();
205 if (dataChildQNname == null) {
206 for (DataSchemaNode dataSchemaNode : target.getChildNodes()) {
207 if (childLocalName.equals(dataSchemaNode.getQName().getLocalName())) {
208 realChilds.add(dataSchemaNode);
209 childNames.add(dataSchemaNode.getQName());
213 realChilds.add(dataChildQNname);
214 childNames.add(child.getQName());
218 final AugmentationIdentifier identifier = new AugmentationIdentifier(childNames);
219 final AugmentationSchemaNode proxy = new EffectiveAugmentationSchema(origSchema, realChilds);
220 return new SimpleEntry<>(identifier, proxy);
225 * Returns resolved case schema for supplied class
227 * @param schema Resolved parent choice schema
228 * @param childClass Class representing case.
229 * @return Optionally a resolved case schema, absent if the choice is not legal in
231 * @throws IllegalArgumentException If supplied class does not represent case.
233 public Optional<CaseSchemaNode> getCaseSchemaDefinition(final ChoiceSchemaNode schema, final Class<?> childClass) {
234 final DataSchemaNode origSchema = getSchemaDefinition(childClass);
235 checkArgument(origSchema instanceof CaseSchemaNode, "Supplied schema %s is not case.", origSchema);
237 /* FIXME: Make sure that if there are multiple augmentations of same
238 * named case, with same structure we treat it as equals
239 * this is due property of Binding specification and copy builders
240 * that user may be unaware that he is using incorrect case
241 * which was generated for choice inside grouping.
243 final Optional<CaseSchemaNode> found = BindingSchemaContextUtils.findInstantiatedCase(schema,
244 (CaseSchemaNode) origSchema);
248 private static Type referencedType(final Class<?> type) {
249 return new ReferencedTypeImpl(JavaTypeName.create(type));
253 * Returns schema ({@link DataSchemaNode}, {@link AugmentationSchemaNode} or {@link TypeDefinition})
254 * from which supplied class was generated. Returned schema may be augmented with
255 * additional information, which was not available at compile type
256 * (e.g. third party augmentations).
258 * @param type Binding Class for which schema should be retrieved.
259 * @return Instance of generated type (definition of Java API), along with
260 * {@link DataSchemaNode}, {@link AugmentationSchemaNode} or {@link TypeDefinition}
261 * which was used to generate supplied class.
263 public Entry<GeneratedType, WithStatus> getTypeWithSchema(final Class<?> type) {
264 return getTypeWithSchema(referencedType(type));
267 private Entry<GeneratedType, WithStatus> getTypeWithSchema(final Type referencedType) {
268 final WithStatus schema = runtimeTypes.findSchema(referencedType).orElseThrow(
269 () -> new NullPointerException("Failed to find schema for type " + referencedType));
270 final Type definedType = runtimeTypes.findType(schema).orElseThrow(
271 () -> new NullPointerException("Failed to find defined type for " + referencedType + " schema " + schema));
273 if (definedType instanceof GeneratedTypeBuilder) {
274 return new SimpleEntry<>(((GeneratedTypeBuilder) definedType).build(), schema);
276 checkArgument(definedType instanceof GeneratedType, "Type %s is not a GeneratedType", referencedType);
277 return new SimpleEntry<>((GeneratedType) definedType, schema);
280 public ImmutableMap<Type, Entry<Type, Type>> getChoiceCaseChildren(final DataNodeContainer schema) {
281 final Map<Type, Entry<Type, Type>> childToCase = new HashMap<>();
283 for (final ChoiceSchemaNode choice : Iterables.filter(schema.getChildNodes(), ChoiceSchemaNode.class)) {
284 final ChoiceSchemaNode originalChoice = getOriginalSchema(choice);
285 final java.util.Optional<Type> optType = runtimeTypes.findType(originalChoice);
286 checkState(optType.isPresent(), "Failed to find generated type for choice %s", originalChoice);
287 final Type choiceType = optType.get();
289 for (Type caze : runtimeTypes.findCases(referencedType(choiceType))) {
290 final Entry<Type,Type> caseIdentifier = new SimpleEntry<>(choiceType, caze);
291 final HashSet<Type> caseChildren = new HashSet<>();
292 if (caze instanceof GeneratedTypeBuilder) {
293 caze = ((GeneratedTypeBuilder) caze).build();
295 collectAllContainerTypes((GeneratedType) caze, caseChildren);
296 for (final Type caseChild : caseChildren) {
297 childToCase.put(caseChild, caseIdentifier);
301 return ImmutableMap.copyOf(childToCase);
305 * Map enum constants: yang - java
307 * @param enumClass enum generated class
308 * @return mapped enum constants from yang with their corresponding values in generated binding classes
310 public BiMap<String, String> getEnumMapping(final Class<?> enumClass) {
311 final Entry<GeneratedType, WithStatus> typeWithSchema = getTypeWithSchema(enumClass);
312 return getEnumMapping(typeWithSchema);
315 private static BiMap<String, String> getEnumMapping(final Entry<GeneratedType, WithStatus> typeWithSchema) {
316 final TypeDefinition<?> typeDef = (TypeDefinition<?>) typeWithSchema.getValue();
318 Preconditions.checkArgument(typeDef instanceof EnumTypeDefinition);
319 final EnumTypeDefinition enumType = (EnumTypeDefinition) typeDef;
321 final HashBiMap<String, String> mappedEnums = HashBiMap.create();
323 for (final EnumTypeDefinition.EnumPair enumPair : enumType.getValues()) {
324 mappedEnums.put(enumPair.getName(), BindingMapping.getClassName(enumPair.getName()));
327 // TODO cache these maps for future use
331 public Set<Class<?>> getCases(final Class<?> choice) {
332 final Collection<Type> cazes = runtimeTypes.findCases(referencedType(choice));
333 final Set<Class<?>> ret = new HashSet<>(cazes.size());
334 for(final Type caze : cazes) {
336 final Class<?> c = strategy.loadClass(caze);
338 } catch (final ClassNotFoundException e) {
339 LOG.warn("Failed to load class for case {}, ignoring it", caze, e);
345 public Class<?> getClassForSchema(final SchemaNode childSchema) {
346 final SchemaNode origSchema = getOriginalSchema(childSchema);
347 final java.util.Optional<Type> clazzType = runtimeTypes.findType(origSchema);
348 checkArgument(clazzType.isPresent(), "Failed to find binding type for %s (original %s)",
349 childSchema, origSchema);
352 return strategy.loadClass(clazzType.get());
353 } catch (final ClassNotFoundException e) {
354 throw new IllegalStateException(e);
358 public ImmutableMap<AugmentationIdentifier, Type> getAvailableAugmentationTypes(final DataNodeContainer container) {
359 final Map<AugmentationIdentifier, Type> identifierToType = new HashMap<>();
360 if (container instanceof AugmentationTarget) {
361 final Set<AugmentationSchemaNode> augments = ((AugmentationTarget) container).getAvailableAugmentations();
362 for (final AugmentationSchemaNode augment : augments) {
363 // Augmentation must have child nodes if is to be used with Binding classes
364 AugmentationSchemaNode augOrig = augment;
365 while (augOrig.getOriginalDefinition().isPresent()) {
366 augOrig = augOrig.getOriginalDefinition().get();
369 if (!augment.getChildNodes().isEmpty()) {
370 final java.util.Optional<Type> augType = runtimeTypes.findType(augOrig);
371 if (augType.isPresent()) {
372 identifierToType.put(getAugmentationIdentifier(augment), augType.get());
378 return ImmutableMap.copyOf(identifierToType);
381 private static AugmentationIdentifier getAugmentationIdentifier(final AugmentationSchemaNode augment) {
382 final Set<QName> childNames = new HashSet<>();
383 for (final DataSchemaNode child : augment.getChildNodes()) {
384 childNames.add(child.getQName());
386 return new AugmentationIdentifier(childNames);
389 private static Type referencedType(final Type type) {
390 if (type instanceof ReferencedTypeImpl) {
393 return new ReferencedTypeImpl(type.getIdentifier());
396 private static Set<Type> collectAllContainerTypes(final GeneratedType type, final Set<Type> collection) {
397 for (final MethodSignature definition : type.getMethodDefinitions()) {
398 Type childType = definition.getReturnType();
399 if (childType instanceof ParameterizedType) {
400 childType = ((ParameterizedType) childType).getActualTypeArguments()[0];
402 if (childType instanceof GeneratedType || childType instanceof GeneratedTypeBuilder) {
403 collection.add(referencedType(childType));
406 for (final Type parent : type.getImplements()) {
407 if (parent instanceof GeneratedType) {
408 collectAllContainerTypes((GeneratedType) parent, collection);
414 private static <T extends SchemaNode> T getOriginalSchema(final T choice) {
415 @SuppressWarnings("unchecked")
416 final T original = (T) SchemaNodeUtils.getRootOriginalIfPossible(choice);
417 if (original != null) {
423 public Class<?> getIdentityClass(final QName input) {
424 return identityClasses.getUnchecked(input);