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.yangtools.sal.binding.generator.util;
10 import com.google.common.base.Optional;
11 import com.google.common.base.Preconditions;
12 import com.google.common.cache.CacheBuilder;
13 import com.google.common.cache.CacheLoader;
14 import com.google.common.cache.LoadingCache;
15 import com.google.common.collect.BiMap;
16 import com.google.common.collect.FluentIterable;
17 import com.google.common.collect.HashBiMap;
18 import com.google.common.collect.HashMultimap;
19 import com.google.common.collect.ImmutableMap;
20 import com.google.common.collect.Multimap;
21 import java.util.AbstractMap.SimpleEntry;
22 import java.util.Collection;
23 import java.util.HashMap;
24 import java.util.HashSet;
26 import java.util.Map.Entry;
28 import javax.annotation.Nullable;
29 import org.opendaylight.yangtools.binding.generator.util.ReferencedTypeImpl;
30 import org.opendaylight.yangtools.concepts.Immutable;
31 import org.opendaylight.yangtools.sal.binding.generator.api.ClassLoadingStrategy;
32 import org.opendaylight.yangtools.sal.binding.generator.impl.BindingGeneratorImpl;
33 import org.opendaylight.yangtools.sal.binding.generator.impl.BindingSchemaContextUtils;
34 import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleContext;
35 import org.opendaylight.yangtools.sal.binding.model.api.GeneratedType;
36 import org.opendaylight.yangtools.sal.binding.model.api.MethodSignature;
37 import org.opendaylight.yangtools.sal.binding.model.api.ParameterizedType;
38 import org.opendaylight.yangtools.sal.binding.model.api.Type;
39 import org.opendaylight.yangtools.sal.binding.model.api.type.builder.GeneratedTypeBuilder;
40 import org.opendaylight.yangtools.yang.binding.Augmentation;
41 import org.opendaylight.yangtools.yang.binding.BindingMapping;
42 import org.opendaylight.yangtools.yang.common.QName;
43 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
44 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
45 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
46 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
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.Module;
51 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
52 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
53 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
54 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
55 import org.opendaylight.yangtools.yang.model.util.EffectiveAugmentationSchema;
56 import org.opendaylight.yangtools.yang.model.util.ExtendedType;
57 import org.opendaylight.yangtools.yang.model.util.SchemaNodeUtils;
58 import org.slf4j.Logger;
59 import org.slf4j.LoggerFactory;
62 * Runtime Context for Java YANG Binding classes
65 * Runtime Context provides additional insight in Java YANG Binding,
66 * binding classes and underlying YANG schema, it contains
67 * runtime information, which could not be derived from generated
68 * classes alone using {@link org.opendaylight.yangtools.yang.binding.util.BindingReflections}.
70 * Some of this information are for example list of all available
71 * children for cases {@link #getChoiceCaseChildren(DataNodeContainer)}, since
72 * choices are augmentable and new choices may be introduced by additional models.
74 * Same goes for all possible augmentations.
77 public class BindingRuntimeContext implements Immutable {
78 private static final Logger LOG = LoggerFactory.getLogger(BindingRuntimeContext.class);
79 private static final char DOT = '.';
80 private final ClassLoadingStrategy strategy;
81 private final SchemaContext schemaContext;
83 private final Map<Type, AugmentationSchema> augmentationToSchema = new HashMap<>();
84 private final BiMap<Type, Object> typeToDefiningSchema = HashBiMap.create();
85 private final Multimap<Type, Type> augmentableToAugmentations = HashMultimap.create();
86 private final Multimap<Type, Type> choiceToCases = HashMultimap.create();
87 private final Map<QName, Type> identities = new HashMap<>();
89 private final LoadingCache<QName, Class<?>> identityClasses = CacheBuilder.newBuilder().weakValues().build(
90 new CacheLoader<QName, Class<?>>() {
92 public Class<?> load(final QName key) {
93 final Type identityType = identities.get(key);
94 Preconditions.checkArgument(identityType != null, "Supplied QName %s is not a valid identity", key);
96 return strategy.loadClass(identityType);
97 } catch (final ClassNotFoundException e) {
98 throw new IllegalArgumentException("Required class " + identityType + "was not found.", e);
103 private BindingRuntimeContext(final ClassLoadingStrategy strategy, final SchemaContext schema) {
104 this.strategy = strategy;
105 this.schemaContext = schema;
107 final BindingGeneratorImpl generator = new BindingGeneratorImpl(false);
108 generator.generateTypes(schema);
109 final Map<Module, ModuleContext> modules = generator.getModuleContexts();
111 for (final ModuleContext ctx : modules.values()) {
112 augmentationToSchema.putAll(ctx.getTypeToAugmentation());
113 typeToDefiningSchema.putAll(ctx.getTypeToSchema());
116 augmentableToAugmentations.putAll(ctx.getAugmentableToAugmentations());
117 choiceToCases.putAll(ctx.getChoiceToCases());
118 identities.putAll(ctx.getIdentities());
124 * Creates Binding Runtime Context from supplied class loading strategy and schema context.
126 * @param strategy Class loading strategy to retrieve generated Binding classes
127 * @param ctx Schema Context which describes YANG model and to which Binding classes should be mapped
128 * @return Instance of BindingRuntimeContext for supplied schema context.
130 public static final BindingRuntimeContext create(final ClassLoadingStrategy strategy, final SchemaContext ctx) {
131 return new BindingRuntimeContext(strategy, ctx);
135 * Returns a class loading strategy associated with this binding runtime context
136 * which is used to load classes.
138 * @return Class loading strategy.
140 public ClassLoadingStrategy getStrategy() {
145 * Returns an stable immutable view of schema context associated with this Binding runtime context.
147 * @return stable view of schema context
149 public SchemaContext getSchemaContext() {
150 return schemaContext;
154 * Returns schema of augmentation
156 * Returned schema is schema definition from which augmentation class was generated.
157 * This schema is isolated from other augmentations. This means it contains
158 * augmentation definition as was present in original YANG module.
160 * Children of returned schema does not contain any additional augmentations,
161 * which may be present in runtime for them, thus returned schema is unsuitable
162 * for use for validation of data.
164 * For retrieving {@link AugmentationSchema}, which will contains
165 * full model for child nodes, you should use method {@link #getResolvedAugmentationSchema(DataNodeContainer, Class)}
166 * which will return augmentation schema derived from supplied augmentation target
169 * @param augClass Augmentation class
170 * @return Schema of augmentation or null if augmentaiton is not known in this context
171 * @throws IllegalArgumentException If supplied class is not an augmentation
173 public @Nullable AugmentationSchema getAugmentationDefinition(final Class<?> augClass) throws IllegalArgumentException {
174 Preconditions.checkArgument(Augmentation.class.isAssignableFrom(augClass), "Class %s does not represent augmentation", augClass);
175 return augmentationToSchema.get(referencedType(augClass));
179 * Returns defining {@link DataSchemaNode} for supplied class.
182 * Returned schema is schema definition from which class was generated.
183 * This schema may be isolated from augmentations, if supplied class
184 * represent node, which was child of grouping or augmentation.
186 * For getting augmentation schema from augmentation class use
187 * {@link #getAugmentationDefinition(Class)} instead.
189 * @param cls Class which represents list, container, choice or case.
190 * @return Schema node, from which class was generated.
192 public DataSchemaNode getSchemaDefinition(final Class<?> cls) {
193 Preconditions.checkArgument(!Augmentation.class.isAssignableFrom(cls),"Supplied class must not be augmentation (%s is)", cls);
194 return (DataSchemaNode) typeToDefiningSchema.get(referencedType(cls));
197 public Entry<AugmentationIdentifier, AugmentationSchema> getResolvedAugmentationSchema(final DataNodeContainer target,
198 final Class<? extends Augmentation<?>> aug) {
199 final AugmentationSchema origSchema = getAugmentationDefinition(aug);
200 Preconditions.checkArgument(origSchema != null, "Augmentation %s is not known in current schema context",aug);
202 * FIXME: Validate augmentation schema lookup
204 * Currently this algorithm, does not verify if instantiated child nodes
205 * are real one derived from augmentation schema. The problem with
206 * full validation is, if user used copy builders, he may use
207 * augmentation which was generated for different place.
209 * If this augmentations have same definition, we emit same identifier
210 * with data and it is up to underlying user to validate data.
213 final Set<QName> childNames = new HashSet<>();
214 final Set<DataSchemaNode> realChilds = new HashSet<>();
215 for (final DataSchemaNode child : origSchema.getChildNodes()) {
216 final DataSchemaNode dataChildQNname = target.getDataChildByName(child.getQName());
217 final String childLocalName = child.getQName().getLocalName();
218 if (dataChildQNname == null) {
219 for (DataSchemaNode dataSchemaNode : target.getChildNodes()) {
220 if (childLocalName.equals(dataSchemaNode.getQName().getLocalName())) {
221 realChilds.add(dataSchemaNode);
222 childNames.add(dataSchemaNode.getQName());
226 realChilds.add(dataChildQNname);
227 childNames.add(child.getQName());
231 final AugmentationIdentifier identifier = new AugmentationIdentifier(childNames);
232 final AugmentationSchema proxy = new EffectiveAugmentationSchema(origSchema, realChilds);
233 return new SimpleEntry<>(identifier, proxy);
238 * Returns resolved case schema for supplied class
240 * @param schema Resolved parent choice schema
241 * @param childClass Class representing case.
242 * @return Optionally a resolved case schema, absent if the choice is not legal in
244 * @throws IllegalArgumentException If supplied class does not represent case.
246 public Optional<ChoiceCaseNode> getCaseSchemaDefinition(final ChoiceSchemaNode schema, final Class<?> childClass) throws IllegalArgumentException {
247 final DataSchemaNode origSchema = getSchemaDefinition(childClass);
248 Preconditions.checkArgument(origSchema instanceof ChoiceCaseNode, "Supplied schema %s is not case.", origSchema);
250 /* FIXME: Make sure that if there are multiple augmentations of same
251 * named case, with same structure we treat it as equals
252 * this is due property of Binding specification and copy builders
253 * that user may be unaware that he is using incorrect case
254 * which was generated for choice inside grouping.
256 final Optional<ChoiceCaseNode> found = BindingSchemaContextUtils.findInstantiatedCase(schema,
257 (ChoiceCaseNode) origSchema);
261 private static Type referencedType(final Class<?> type) {
262 return new ReferencedTypeImpl(type.getPackage().getName(), type.getSimpleName());
265 static Type referencedType(final String type) {
266 final int packageClassSeparator = type.lastIndexOf(DOT);
267 return new ReferencedTypeImpl(type.substring(0, packageClassSeparator), type.substring(packageClassSeparator + 1));
271 * Returns schema ({@link DataSchemaNode}, {@link AugmentationSchema} or {@link TypeDefinition})
272 * from which supplied class was generated. Returned schema may be augmented with
273 * additional information, which was not available at compile type
274 * (e.g. third party augmentations).
276 * @param type Binding Class for which schema should be retrieved.
277 * @return Instance of generated type (definition of Java API), along with
278 * {@link DataSchemaNode}, {@link AugmentationSchema} or {@link TypeDefinition}
279 * which was used to generate supplied class.
281 public Entry<GeneratedType, Object> getTypeWithSchema(final Class<?> type) {
282 return getTypeWithSchema(referencedType(type));
285 public Entry<GeneratedType, Object> getTypeWithSchema(final String type) {
286 return getTypeWithSchema(referencedType(type));
289 private Entry<GeneratedType, Object> getTypeWithSchema(final Type referencedType) {
290 final Object schema = typeToDefiningSchema.get(referencedType);
291 final Type definedType = typeToDefiningSchema.inverse().get(schema);
292 Preconditions.checkNotNull(schema);
293 Preconditions.checkNotNull(definedType);
294 if(definedType instanceof GeneratedTypeBuilder) {
295 return new SimpleEntry<>(((GeneratedTypeBuilder) definedType).toInstance(), schema);
297 Preconditions.checkArgument(definedType instanceof GeneratedType,"Type {} is not GeneratedType", referencedType);
298 return new SimpleEntry<>((GeneratedType) definedType,schema);
301 public ImmutableMap<Type, Entry<Type, Type>> getChoiceCaseChildren(final DataNodeContainer schema) {
302 final Map<Type,Entry<Type,Type>> childToCase = new HashMap<>();
303 for (final ChoiceSchemaNode choice : FluentIterable.from(schema.getChildNodes()).filter(ChoiceSchemaNode.class)) {
304 final ChoiceSchemaNode originalChoice = getOriginalSchema(choice);
305 final Type choiceType = referencedType(typeToDefiningSchema.inverse().get(originalChoice));
306 final Collection<Type> cases = choiceToCases.get(choiceType);
308 for (Type caze : cases) {
309 final Entry<Type,Type> caseIdentifier = new SimpleEntry<>(choiceType,caze);
310 final HashSet<Type> caseChildren = new HashSet<>();
311 if (caze instanceof GeneratedTypeBuilder) {
312 caze = ((GeneratedTypeBuilder) caze).toInstance();
314 collectAllContainerTypes((GeneratedType) caze, caseChildren);
315 for (final Type caseChild : caseChildren) {
316 childToCase.put(caseChild, caseIdentifier);
320 return ImmutableMap.copyOf(childToCase);
324 * Map enum constants: yang - java
326 * @param enumClass enum generated class
327 * @return mapped enum constants from yang with their corresponding values in generated binding classes
329 public BiMap<String, String> getEnumMapping(final Class<?> enumClass) {
330 final Entry<GeneratedType, Object> typeWithSchema = getTypeWithSchema(enumClass);
331 return getEnumMapping(typeWithSchema);
335 * See {@link #getEnumMapping(Class)}}
337 public BiMap<String, String> getEnumMapping(final String enumClass) {
338 final Entry<GeneratedType, Object> typeWithSchema = getTypeWithSchema(enumClass);
339 return getEnumMapping(typeWithSchema);
342 private static BiMap<String, String> getEnumMapping(final Entry<GeneratedType, Object> typeWithSchema) {
343 final TypeDefinition<?> typeDef = (TypeDefinition<?>) typeWithSchema.getValue();
345 final EnumTypeDefinition enumType;
346 if(typeDef instanceof ExtendedType) {
347 enumType = (EnumTypeDefinition) ((ExtendedType) typeDef).getBaseType();
349 Preconditions.checkArgument(typeDef instanceof EnumTypeDefinition);
350 enumType = (EnumTypeDefinition) typeDef;
353 final HashBiMap<String, String> mappedEnums = HashBiMap.create();
355 for (final EnumTypeDefinition.EnumPair enumPair : enumType.getValues()) {
356 mappedEnums.put(enumPair.getName(), BindingMapping.getClassName(enumPair.getName()));
359 // TODO cache these maps for future use
363 public Set<Class<?>> getCases(final Class<?> choice) {
364 final Collection<Type> cazes = choiceToCases.get(referencedType(choice));
365 final Set<Class<?>> ret = new HashSet<>(cazes.size());
366 for(final Type caze : cazes) {
368 final Class<?> c = strategy.loadClass(caze);
370 } catch (final ClassNotFoundException e) {
371 LOG.warn("Failed to load class for case {}, ignoring it", caze, e);
377 public Class<?> getClassForSchema(final SchemaNode childSchema) {
378 final SchemaNode origSchema = getOriginalSchema(childSchema);
379 final Type clazzType = typeToDefiningSchema.inverse().get(origSchema);
381 return strategy.loadClass(clazzType);
382 } catch (final ClassNotFoundException e) {
383 throw new IllegalStateException(e);
387 public ImmutableMap<AugmentationIdentifier,Type> getAvailableAugmentationTypes(final DataNodeContainer container) {
388 final Map<AugmentationIdentifier,Type> identifierToType = new HashMap<>();
389 if (container instanceof AugmentationTarget) {
390 final Set<AugmentationSchema> augments = ((AugmentationTarget) container).getAvailableAugmentations();
391 for (final AugmentationSchema augment : augments) {
392 // Augmentation must have child nodes if is to be used with Binding classes
393 AugmentationSchema augOrig = augment;
394 while (augOrig.getOriginalDefinition().isPresent()) {
395 augOrig = augOrig.getOriginalDefinition().get();
398 if (!augment.getChildNodes().isEmpty()) {
399 final Type augType = typeToDefiningSchema.inverse().get(augOrig);
400 if (augType != null) {
401 identifierToType.put(getAugmentationIdentifier(augment),augType);
407 return ImmutableMap.copyOf(identifierToType);
410 private static AugmentationIdentifier getAugmentationIdentifier(final AugmentationSchema augment) {
411 final Set<QName> childNames = new HashSet<>();
412 for (final DataSchemaNode child : augment.getChildNodes()) {
413 childNames.add(child.getQName());
415 return new AugmentationIdentifier(childNames);
418 private static Type referencedType(final Type type) {
419 if(type instanceof ReferencedTypeImpl) {
422 return new ReferencedTypeImpl(type.getPackageName(), type.getName());
425 private static Set<Type> collectAllContainerTypes(final GeneratedType type, final Set<Type> collection) {
426 for (final MethodSignature definition : type.getMethodDefinitions()) {
427 Type childType = definition.getReturnType();
428 if(childType instanceof ParameterizedType) {
429 childType = ((ParameterizedType) childType).getActualTypeArguments()[0];
431 if(childType instanceof GeneratedType || childType instanceof GeneratedTypeBuilder) {
432 collection.add(referencedType(childType));
435 for (final Type parent : type.getImplements()) {
436 if (parent instanceof GeneratedType) {
437 collectAllContainerTypes((GeneratedType) parent, collection);
443 private static <T extends SchemaNode> T getOriginalSchema(final T choice) {
444 @SuppressWarnings("unchecked")
445 final T original = (T) SchemaNodeUtils.getRootOriginalIfPossible(choice);
446 if (original != null) {
452 public Class<?> getIdentityClass(final QName input) {
453 return identityClasses.getUnchecked(input);