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.controller.md.sal.binding.impl;
10 import com.google.common.base.Function;
11 import com.google.common.base.Optional;
12 import com.google.common.base.Preconditions;
13 import com.google.common.cache.CacheBuilder;
14 import com.google.common.cache.CacheLoader;
15 import com.google.common.cache.LoadingCache;
16 import com.google.common.collect.ImmutableBiMap;
17 import java.lang.reflect.Method;
18 import java.util.AbstractMap.SimpleEntry;
19 import java.util.Collection;
20 import java.util.HashSet;
21 import java.util.Iterator;
23 import java.util.Map.Entry;
25 import java.util.concurrent.TimeUnit;
26 import javax.annotation.Nonnull;
27 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizationException;
28 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizationOperation;
29 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizer;
30 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
31 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeFactory;
32 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeNode;
33 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
34 import org.opendaylight.mdsal.binding.dom.codec.impl.BindingNormalizedNodeCodecRegistry;
35 import org.opendaylight.mdsal.binding.dom.codec.impl.MissingSchemaException;
36 import org.opendaylight.mdsal.binding.generator.api.ClassLoadingStrategy;
37 import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
38 import org.opendaylight.yangtools.yang.binding.BindingMapping;
39 import org.opendaylight.yangtools.yang.binding.DataContainer;
40 import org.opendaylight.yangtools.yang.binding.DataObject;
41 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
42 import org.opendaylight.yangtools.yang.binding.Notification;
43 import org.opendaylight.yangtools.yang.binding.RpcService;
44 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
45 import org.opendaylight.yangtools.yang.common.QNameModule;
46 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
47 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
48 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
49 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
50 import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
51 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
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.SchemaContext;
56 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
57 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
58 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
59 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
60 import org.slf4j.Logger;
61 import org.slf4j.LoggerFactory;
63 public class BindingToNormalizedNodeCodec
64 implements BindingCodecTreeFactory, BindingNormalizedNodeSerializer, SchemaContextListener, AutoCloseable {
66 private static final long WAIT_DURATION_SEC = 5;
67 private static final Logger LOG = LoggerFactory.getLogger(BindingToNormalizedNodeCodec.class);
69 private final BindingNormalizedNodeCodecRegistry codecRegistry;
71 private final ClassLoadingStrategy classLoadingStrategy;
72 private final FutureSchema futureSchema;
73 private final LoadingCache<InstanceIdentifier<?>, YangInstanceIdentifier> iiCache = CacheBuilder.newBuilder()
74 .softValues().build(new CacheLoader<InstanceIdentifier<?>, YangInstanceIdentifier>() {
77 public YangInstanceIdentifier load(final InstanceIdentifier<?> key) throws Exception {
78 return toYangInstanceIdentifierBlocking(key);
83 private DataNormalizer legacyToNormalized;
85 public BindingToNormalizedNodeCodec(final ClassLoadingStrategy classLoadingStrategy,
86 final BindingNormalizedNodeCodecRegistry codecRegistry) {
87 this(classLoadingStrategy, codecRegistry, false);
91 public BindingToNormalizedNodeCodec(final ClassLoadingStrategy classLoadingStrategy,
92 final BindingNormalizedNodeCodecRegistry codecRegistry, final boolean waitForSchema) {
93 this.classLoadingStrategy = Preconditions.checkNotNull(classLoadingStrategy, "classLoadingStrategy");
94 this.codecRegistry = Preconditions.checkNotNull(codecRegistry, "codecRegistry");
95 this.futureSchema = new FutureSchema(WAIT_DURATION_SEC, TimeUnit.SECONDS, waitForSchema);
98 public YangInstanceIdentifier
99 toYangInstanceIdentifierBlocking(final InstanceIdentifier<? extends DataObject> binding) {
101 return this.codecRegistry.toYangInstanceIdentifier(binding);
102 } catch (final MissingSchemaException e) {
103 waitForSchema(decompose(binding), e);
104 return this.codecRegistry.toYangInstanceIdentifier(binding);
109 * Translates supplied Binding Instance Identifier into NormalizedNode
110 * instance identifier.
113 * Binding Instance Identifier
114 * @return DOM Instance Identifier
115 * @throws IllegalArgumentException
116 * If supplied Instance Identifier is not valid.
118 public YangInstanceIdentifier toNormalized(final InstanceIdentifier<? extends DataObject> binding) {
119 return this.codecRegistry.toYangInstanceIdentifier(binding);
123 public YangInstanceIdentifier toYangInstanceIdentifier(final InstanceIdentifier<?> binding) {
124 return this.codecRegistry.toYangInstanceIdentifier(binding);
127 public YangInstanceIdentifier toYangInstanceIdentifierCached(final InstanceIdentifier<?> binding) {
128 return this.iiCache.getUnchecked(binding);
132 public <T extends DataObject> Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> toNormalizedNode(
133 final InstanceIdentifier<T> path, final T data) {
134 return this.codecRegistry.toNormalizedNode(path, data);
138 * Converts Binding Map.Entry to DOM Map.Entry
141 * Same as {@link #toNormalizedNode(InstanceIdentifier, DataObject)}.
143 * @param binding Map Entry with InstanceIdentifier as key and DataObject as value.
144 * @return DOM Map Entry with {@link YangInstanceIdentifier} as key and {@link NormalizedNode}
147 @SuppressWarnings({ "unchecked", "rawtypes" })
148 public Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> toNormalizedNode(
149 final Entry<InstanceIdentifier<? extends DataObject>, DataObject> binding) {
150 return toNormalizedNode((InstanceIdentifier) binding.getKey(), binding.getValue());
154 public Entry<InstanceIdentifier<?>, DataObject> fromNormalizedNode(final YangInstanceIdentifier path,
155 final NormalizedNode<?, ?> data) {
156 return this.codecRegistry.fromNormalizedNode(path, data);
160 public Notification fromNormalizedNodeNotification(final SchemaPath path, final ContainerNode data) {
161 return this.codecRegistry.fromNormalizedNodeNotification(path, data);
165 public DataObject fromNormalizedNodeRpcData(final SchemaPath path, final ContainerNode data) {
166 return this.codecRegistry.fromNormalizedNodeRpcData(path, data);
170 public InstanceIdentifier<?> fromYangInstanceIdentifier(final YangInstanceIdentifier dom) {
171 return this.codecRegistry.fromYangInstanceIdentifier(dom);
175 public ContainerNode toNormalizedNodeNotification(final Notification data) {
176 return this.codecRegistry.toNormalizedNodeNotification(data);
180 public ContainerNode toNormalizedNodeRpcData(final DataContainer data) {
181 return this.codecRegistry.toNormalizedNodeRpcData(data);
184 public DataNormalizer getDataNormalizer() {
185 return this.legacyToNormalized;
189 * Returns a Binding-Aware instance identifier from normalized
190 * instance-identifier if it is possible to create representation.
193 * Returns Optional.absent for cases where target is mixin node except
197 public Optional<InstanceIdentifier<? extends DataObject>> toBinding(final YangInstanceIdentifier normalized)
198 throws DeserializationException {
200 return Optional.<InstanceIdentifier<? extends DataObject>>fromNullable(
201 this.codecRegistry.fromYangInstanceIdentifier(normalized));
202 } catch (final IllegalArgumentException e) {
203 return Optional.absent();
207 public Optional<Entry<InstanceIdentifier<? extends DataObject>, DataObject>> toBinding(
208 @Nonnull final Entry<YangInstanceIdentifier, ? extends NormalizedNode<?, ?>> normalized)
209 throws DeserializationException {
212 * This cast is required, due to generics behaviour in openjdk / oracle javac
214 * InstanceIdentifier has definition InstanceIdentifier<T extends DataObject>,
215 * this means '?' is always  <? extends DataObject>. Eclipse compiler
216 * is able to determine this relationship and treats
217 * Entry<InstanceIdentifier<?>,DataObject> and Entry<InstanceIdentifier<? extends DataObject,DataObject>
218 * as assignable. However openjdk / oracle javac treats this two types
219 * as incompatible and issues a compile error.
221 * It is safe to loose generic information and cast it to other generic signature.
224 @SuppressWarnings("unchecked")
225 final Entry<InstanceIdentifier<? extends DataObject>, DataObject> binding =
226 Entry.class.cast(this.codecRegistry.fromNormalizedNode(normalized.getKey(), normalized.getValue()));
227 return Optional.fromNullable(binding);
228 } catch (final IllegalArgumentException e) {
229 return Optional.absent();
234 public void onGlobalContextUpdated(final SchemaContext schemaContext) {
235 this.legacyToNormalized = new DataNormalizer(schemaContext);
236 final BindingRuntimeContext runtimeContext =
237 BindingRuntimeContext.create(this.classLoadingStrategy, schemaContext);
238 this.codecRegistry.onBindingRuntimeContextUpdated(runtimeContext);
239 this.futureSchema.onRuntimeContextUpdated(runtimeContext);
242 public <T extends DataObject> Function<Optional<NormalizedNode<?, ?>>, Optional<T>>
243 deserializeFunction(final InstanceIdentifier<T> path) {
244 return this.codecRegistry.deserializeFunction(path);
248 * Returns an default object according to YANG schema for supplied path.
250 * @param path DOM Path
251 * @return Node with defaults set on.
253 public NormalizedNode<?, ?> getDefaultNodeFor(final YangInstanceIdentifier path) {
254 final Iterator<PathArgument> iterator = path.getPathArguments().iterator();
255 DataNormalizationOperation<?> currentOp = this.legacyToNormalized.getRootOperation();
256 while (iterator.hasNext()) {
257 final PathArgument currentArg = iterator.next();
259 currentOp = currentOp.getChild(currentArg);
260 } catch (final DataNormalizationException e) {
261 throw new IllegalArgumentException(String.format("Invalid child encountered in path %s", path), e);
264 return currentOp.createDefault(path.getLastPathArgument());
267 public BindingNormalizedNodeCodecRegistry getCodecRegistry() {
268 return this.codecRegistry;
272 public void close() {
273 // NOOP Intentionally
276 public BindingNormalizedNodeCodecRegistry getCodecFactory() {
277 return this.codecRegistry;
280 // FIXME: This should be probably part of Binding Runtime context
281 public ImmutableBiMap<Method, SchemaPath> getRpcMethodToSchemaPath(final Class<? extends RpcService> key) {
282 final Module module = getModuleBlocking(key);
283 final ImmutableBiMap.Builder<Method, SchemaPath> ret = ImmutableBiMap.<Method, SchemaPath>builder();
285 for (final RpcDefinition rpcDef : module.getRpcs()) {
286 final Method method = findRpcMethod(key, rpcDef);
287 ret.put(method, rpcDef.getPath());
289 } catch (final NoSuchMethodException e) {
290 throw new IllegalStateException("Rpc defined in model does not have representation in generated class.", e);
295 public ImmutableBiMap<Method, RpcDefinition> getRpcMethodToSchema(final Class<? extends RpcService> key) {
296 final Module module = getModuleBlocking(key);
297 final ImmutableBiMap.Builder<Method, RpcDefinition> ret = ImmutableBiMap.builder();
299 for (final RpcDefinition rpcDef : module.getRpcs()) {
300 final Method method = findRpcMethod(key, rpcDef);
301 ret.put(method, rpcDef);
303 } catch (final NoSuchMethodException e) {
304 throw new IllegalStateException("Rpc defined in model does not have representation in generated class.", e);
309 private Module getModuleBlocking(final Class<?> modeledClass) {
310 final QNameModule moduleName = BindingReflections.getQNameModule(modeledClass);
311 Module module = runtimeContext().getSchemaContext().findModule(moduleName).orElse(null);
312 if (module == null && this.futureSchema.waitForSchema(moduleName)) {
313 module = runtimeContext().getSchemaContext().findModule(moduleName).orElse(null);
315 Preconditions.checkState(module != null, "Schema for %s is not available.", modeledClass);
319 private void waitForSchema(final Collection<Class<?>> binding, final MissingSchemaException ex) {
320 LOG.warn("Blocking thread to wait for schema convergence updates for {} {}", this.futureSchema.getDuration(),
321 this.futureSchema.getUnit());
322 if (this.futureSchema.waitForSchema(binding)) {
329 private Method findRpcMethod(final Class<? extends RpcService> key, final RpcDefinition rpcDef)
330 throws NoSuchMethodException {
331 final String methodName = BindingMapping.getMethodName(rpcDef.getQName());
332 if (rpcDef.getInput() != null && isExplicitStatement(rpcDef.getInput())) {
333 final Class<?> inputClz = runtimeContext().getClassForSchema(rpcDef.getInput());
334 return key.getMethod(methodName, inputClz);
336 return key.getMethod(methodName);
339 private static boolean isExplicitStatement(final ContainerSchemaNode node) {
340 return node instanceof EffectiveStatement
341 && ((EffectiveStatement) node).getDeclared().getStatementSource() == StatementSource.DECLARATION;
344 private BindingRuntimeContext runtimeContext() {
345 return this.futureSchema.runtimeContext();
349 public BindingCodecTree create(final BindingRuntimeContext context) {
350 return this.codecRegistry.create(context);
354 public BindingCodecTree create(final SchemaContext context, final Class<?>... bindingClasses) {
355 return this.codecRegistry.create(context, bindingClasses);
359 public Map.Entry<InstanceIdentifier<?>, BindingCodecTreeNode<?>>
360 getSubtreeCodec(final YangInstanceIdentifier domIdentifier) {
362 final BindingCodecTree currentCodecTree = this.codecRegistry.getCodecContext();
363 final InstanceIdentifier<?> bindingPath = this.codecRegistry.fromYangInstanceIdentifier(domIdentifier);
364 Preconditions.checkArgument(bindingPath != null);
366 * If we are able to deserialize YANG instance identifier, getSubtreeCodec must
367 * return non-null value.
369 final BindingCodecTreeNode<?> codecContext = currentCodecTree.getSubtreeCodec(bindingPath);
370 return new SimpleEntry<>(bindingPath, codecContext);
373 @SuppressWarnings("unchecked")
374 public Set<Class<? extends Notification>> getNotificationClasses(final Set<SchemaPath> interested) {
375 final Set<Class<? extends Notification>> result = new HashSet<>();
376 final Set<NotificationDefinition> knownNotifications = runtimeContext().getSchemaContext().getNotifications();
377 for (final NotificationDefinition notification : knownNotifications) {
378 if (interested.contains(notification.getPath())) {
380 result.add((Class<? extends Notification>) runtimeContext().getClassForSchema(notification));
381 } catch (final IllegalStateException e) {
383 LOG.warn("Class for {} is currently not known.", notification.getPath(), e);
390 private static Collection<Class<?>> decompose(final InstanceIdentifier<?> path) {
391 final Set<Class<?>> clazzes = new HashSet<>();
392 for (final InstanceIdentifier.PathArgument arg : path.getPathArguments()) {
393 clazzes.add(arg.getType());