binding/mdsal-binding-dom-codec/src/main/java/org/opendaylight/mdsal/binding/dom/codec/impl/BindingCodecContext.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.mdsal.binding.dom.codec.impl;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11 import static com.google.common.base.Preconditions.checkState;
  12 import static com.google.common.base.Verify.verify;
  13 import static com.google.common.base.Verify.verifyNotNull;
  14 import static java.util.Objects.requireNonNull;
  15
  16 import com.google.common.base.Strings;
  17 import com.google.common.base.Throwables;
  18 import com.google.common.cache.CacheBuilder;
  19 import com.google.common.cache.CacheLoader;
  20 import com.google.common.cache.LoadingCache;
  21 import com.google.common.collect.ImmutableList;
  22 import com.google.common.collect.ImmutableMap;
  23 import com.google.common.util.concurrent.UncheckedExecutionException;
  24 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  25 import java.io.File;
  26 import java.io.IOException;
  27 import java.lang.reflect.Method;
  28 import java.lang.reflect.ParameterizedType;
  29 import java.lang.reflect.Type;
  30 import java.lang.reflect.WildcardType;
  31 import java.time.Instant;
  32 import java.util.ArrayList;
  33 import java.util.Collection;
  34 import java.util.HashMap;
  35 import java.util.List;
  36 import java.util.Map;
  37 import java.util.Map.Entry;
  38 import java.util.Optional;
  39 import java.util.ServiceLoader;
  40 import java.util.concurrent.ExecutionException;
  41 import org.eclipse.jdt.annotation.NonNull;
  42 import org.eclipse.jdt.annotation.Nullable;
  43 import org.kohsuke.MetaInfServices;
  44 import org.opendaylight.mdsal.binding.dom.codec.api.BindingAugmentationCodecTreeNode;
  45 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeNode;
  46 import org.opendaylight.mdsal.binding.dom.codec.api.BindingDataObjectCodecTreeNode;
  47 import org.opendaylight.mdsal.binding.dom.codec.api.BindingInstanceIdentifierCodec;
  48 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeWriterFactory;
  49 import org.opendaylight.mdsal.binding.dom.codec.api.BindingStreamEventWriter;
  50 import org.opendaylight.mdsal.binding.dom.codec.api.BindingYangDataCodecTreeNode;
  51 import org.opendaylight.mdsal.binding.dom.codec.api.CommonDataObjectCodecTreeNode;
  52 import org.opendaylight.mdsal.binding.dom.codec.api.IncorrectNestingException;
  53 import org.opendaylight.mdsal.binding.dom.codec.api.MissingSchemaException;
  54 import org.opendaylight.mdsal.binding.dom.codec.spi.AbstractBindingNormalizedNodeSerializer;
  55 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
  56 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingSchemaMapping;
  57 import org.opendaylight.mdsal.binding.loader.BindingClassLoader;
  58 import org.opendaylight.mdsal.binding.model.api.JavaTypeName;
  59 import org.opendaylight.mdsal.binding.runtime.api.ActionRuntimeType;
  60 import org.opendaylight.mdsal.binding.runtime.api.BindingRuntimeContext;
  61 import org.opendaylight.mdsal.binding.runtime.api.ChoiceRuntimeType;
  62 import org.opendaylight.mdsal.binding.runtime.api.ContainerLikeRuntimeType;
  63 import org.opendaylight.mdsal.binding.runtime.api.ContainerRuntimeType;
  64 import org.opendaylight.mdsal.binding.runtime.api.DataRuntimeType;
  65 import org.opendaylight.mdsal.binding.runtime.api.InputRuntimeType;
  66 import org.opendaylight.mdsal.binding.runtime.api.ListRuntimeType;
  67 import org.opendaylight.mdsal.binding.runtime.api.NotificationRuntimeType;
  68 import org.opendaylight.mdsal.binding.runtime.api.OutputRuntimeType;
  69 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
  70 import org.opendaylight.yangtools.concepts.Immutable;
  71 import org.opendaylight.yangtools.util.ClassLoaderUtils;
  72 import org.opendaylight.yangtools.yang.binding.Action;
  73 import org.opendaylight.yangtools.yang.binding.Augmentation;
  74 import org.opendaylight.yangtools.yang.binding.BaseIdentity;
  75 import org.opendaylight.yangtools.yang.binding.BaseNotification;
  76 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
  77 import org.opendaylight.yangtools.yang.binding.DataContainer;
  78 import org.opendaylight.yangtools.yang.binding.DataObject;
  79 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  80 import org.opendaylight.yangtools.yang.binding.Key;
  81 import org.opendaylight.yangtools.yang.binding.KeyAware;
  82 import org.opendaylight.yangtools.yang.binding.KeyedListAction;
  83 import org.opendaylight.yangtools.yang.binding.Notification;
  84 import org.opendaylight.yangtools.yang.binding.OpaqueObject;
  85 import org.opendaylight.yangtools.yang.binding.RpcInput;
  86 import org.opendaylight.yangtools.yang.binding.RpcOutput;
  87 import org.opendaylight.yangtools.yang.binding.YangData;
  88 import org.opendaylight.yangtools.yang.common.QName;
  89 import org.opendaylight.yangtools.yang.common.YangDataName;
  90 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  91 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  92 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
  93 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  94 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
  95 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  96 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
  97 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  98 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  99 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
 100 import org.opendaylight.yangtools.yang.data.api.schema.ValueNode;
 101 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
 102 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
 103 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizationResultHolder;
 104 import org.opendaylight.yangtools.yang.model.api.AnydataSchemaNode;
 105 import org.opendaylight.yangtools.yang.model.api.AnyxmlSchemaNode;
 106 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
 107 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
 108 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
 109 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
 110 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
 111 import org.opendaylight.yangtools.yang.model.api.TypeAware;
 112 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
 113 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
 114 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
 115 import org.opendaylight.yangtools.yang.model.api.stmt.PresenceEffectiveStatement;
 116 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
 117 import org.opendaylight.yangtools.yang.model.api.stmt.TypeDefinitionAware;
 118 import org.opendaylight.yangtools.yang.model.api.type.IdentityrefTypeDefinition;
 119 import org.opendaylight.yangtools.yang.model.api.type.InstanceIdentifierTypeDefinition;
 120 import org.opendaylight.yangtools.yang.model.api.type.LeafrefTypeDefinition;
 121 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
 122 import org.slf4j.Logger;
 123 import org.slf4j.LoggerFactory;
 124
 125 @MetaInfServices(value = BindingDOMCodecServices.class)
 126 public final class BindingCodecContext extends AbstractBindingNormalizedNodeSerializer
 127         implements BindingDOMCodecServices, Immutable, CodecContextFactory, DataContainerSerializerRegistry {
 128     private static final Logger LOG = LoggerFactory.getLogger(BindingCodecContext.class);
 129     private static final @NonNull NodeIdentifier FAKE_NODEID = new NodeIdentifier(QName.create("fake", "fake"));
 130     private static final File BYTECODE_DIRECTORY;
 131
 132     static {
 133         final String dir = System.getProperty("org.opendaylight.mdsal.binding.dom.codec.loader.bytecodeDumpDirectory");
 134         BYTECODE_DIRECTORY = Strings.isNullOrEmpty(dir) ? null : new File(dir);
 135     }
 136
 137     private final LoadingCache<Class<?>, DataContainerStreamer<?>> streamers = CacheBuilder.newBuilder()
 138         .build(new CacheLoader<>() {
 139             @Override
 140             public DataContainerStreamer<?> load(final Class<?> key) throws ReflectiveOperationException {
 141                 final var streamer = DataContainerStreamerGenerator.generateStreamer(loader, BindingCodecContext.this,
 142                     key);
 143                 final var instance = streamer.getDeclaredField(DataContainerStreamerGenerator.INSTANCE_FIELD);
 144                 return (DataContainerStreamer<?>) instance.get(null);
 145             }
 146         });
 147     private final LoadingCache<Class<?>, DataContainerSerializer> serializers = CacheBuilder.newBuilder()
 148         .build(new CacheLoader<>() {
 149             @Override
 150             public DataContainerSerializer load(final Class<?> key) throws ExecutionException {
 151                 return new DataContainerSerializer(BindingCodecContext.this, streamers.get(key));
 152             }
 153         });
 154     private final LoadingCache<Class<? extends DataObject>, DataContainerCodecContext<?, ?, ?>> childrenByClass =
 155         CacheBuilder.newBuilder().build(new CacheLoader<>() {
 156             @Override
 157             public DataContainerCodecContext<?, ?, ?> load(final Class<? extends DataObject> key) {
 158                 final var childSchema = context.getTypes().bindingChild(JavaTypeName.create(key));
 159                 if (childSchema instanceof ContainerLikeRuntimeType containerLike) {
 160                     if (childSchema instanceof ContainerRuntimeType container
 161                         && container.statement().findFirstEffectiveSubstatement(PresenceEffectiveStatement.class)
 162                             .isEmpty()) {
 163                         return new StructuralContainerCodecContext<>(key, container, BindingCodecContext.this);
 164                     }
 165                     return new ContainerLikeCodecContext<>(key, containerLike, BindingCodecContext.this);
 166                 } else if (childSchema instanceof ListRuntimeType list) {
 167                     return list.keyType() == null ? new ListCodecContext<>(key, list, BindingCodecContext.this)
 168                         : MapCodecContext.of(key, list, BindingCodecContext.this);
 169                 } else if (childSchema instanceof ChoiceRuntimeType choice) {
 170                     return new ChoiceCodecContext<>(key.asSubclass(ChoiceIn.class), choice, BindingCodecContext.this);
 171                 } else if (childSchema == null) {
 172                     throw DataContainerCodecContext.childNullException(context, key, "%s is not top-level item.", key);
 173                 } else {
 174                     throw new IncorrectNestingException("%s is not a valid data tree child of %s", key, this);
 175                 }
 176             }
 177         });
 178
 179     // FIXME: this could also be a leaf!
 180     private final LoadingCache<QName, DataContainerCodecContext<?, ?, ?>> childrenByDomArg =
 181         CacheBuilder.newBuilder().build(new CacheLoader<>() {
 182             @Override
 183             public DataContainerCodecContext<?, ?, ?> load(final QName qname) throws ClassNotFoundException {
 184                 final var type = context.getTypes();
 185                 final var child = type.schemaTreeChild(qname);
 186                 if (child == null) {
 187                     final var module = qname.getModule();
 188                     if (context.modelContext().findModule(module).isEmpty()) {
 189                         throw new MissingSchemaException(
 190                             "Module " + module + " is not present in current schema context.");
 191                     }
 192                     throw new IncorrectNestingException("Argument %s is not valid child of %s", qname, type);
 193                 }
 194
 195                 if (!(child instanceof DataRuntimeType)) {
 196                     throw new IncorrectNestingException("Argument %s is not valid data tree child of %s", qname, type);
 197                 }
 198
 199                 // TODO: improve this check?
 200                 final var childSchema = child.statement();
 201                 if (childSchema instanceof DataNodeContainer || childSchema instanceof ChoiceSchemaNode) {
 202                     return getStreamChild(context.loadClass(child.javaType()));
 203                 }
 204
 205                 throw new UnsupportedOperationException("Unsupported child type " + childSchema.getClass());
 206             }
 207         });
 208
 209     private final LoadingCache<Class<? extends DataObject>, ChoiceCodecContext<?>> choicesByClass =
 210         CacheBuilder.newBuilder().build(new CacheLoader<>() {
 211             @Override
 212             public ChoiceCodecContext<?> load(final Class<? extends DataObject> caseType) {
 213                 final var choiceClass = findCaseChoice(caseType);
 214                 if (choiceClass == null) {
 215                     throw new IllegalArgumentException(caseType + " is not a valid case representation");
 216                 }
 217                 if (context.getSchemaDefinition(choiceClass) instanceof ChoiceRuntimeType choiceType) {
 218                     // FIXME: accurate type!
 219                     return new ChoiceCodecContext(choiceClass, choiceType, BindingCodecContext.this);
 220                 }
 221                 throw new IllegalArgumentException(caseType + " does not refer to a choice");
 222             }
 223
 224             private static Class<?> findCaseChoice(final Class<? extends DataObject> caseClass) {
 225                 for (var type : caseClass.getGenericInterfaces()) {
 226                     if (type instanceof Class<?> typeClass && ChoiceIn.class.isAssignableFrom(typeClass)) {
 227                         return typeClass.asSubclass(ChoiceIn.class);
 228                     }
 229                 }
 230                 return null;
 231             }
 232         });
 233
 234     private final LoadingCache<Class<? extends Action<?, ?, ?>>, ActionCodecContext> actionsByClass =
 235         CacheBuilder.newBuilder().build(new CacheLoader<>() {
 236             @Override
 237             public ActionCodecContext load(final Class<? extends Action<?, ?, ?>> action) {
 238                 if (KeyedListAction.class.isAssignableFrom(action)) {
 239                     return prepareActionContext(2, 3, 4, action, KeyedListAction.class);
 240                 } else if (Action.class.isAssignableFrom(action)) {
 241                     return prepareActionContext(1, 2, 3, action, Action.class);
 242                 }
 243                 throw new IllegalArgumentException("The specific action type does not exist for action "
 244                     + action.getName());
 245             }
 246
 247             private ActionCodecContext prepareActionContext(final int inputOffset, final int outputOffset,
 248                     final int expectedArgsLength, final Class<? extends Action<?, ?, ?>> action,
 249                     final Class<?> actionType) {
 250                 final var args = ClassLoaderUtils.findParameterizedType(action, actionType)
 251                     .orElseThrow(() -> new IllegalStateException(action + " does not specialize " + actionType))
 252                     .getActualTypeArguments();
 253                 checkArgument(args.length == expectedArgsLength, "Unexpected (%s) Action generatic arguments",
 254                     args.length);
 255                 final ActionRuntimeType schema = context.getActionDefinition(action);
 256                 return new ActionCodecContext(
 257                     new ContainerLikeCodecContext(asClass(args[inputOffset], RpcInput.class), schema.input(),
 258                         BindingCodecContext.this),
 259                     new ContainerLikeCodecContext(asClass(args[outputOffset], RpcOutput.class), schema.output(),
 260                         BindingCodecContext.this));
 261             }
 262
 263             private static <T extends DataObject> Class<? extends T> asClass(final Type type, final Class<T> target) {
 264                 verify(type instanceof Class, "Type %s is not a class", type);
 265                 return ((Class<?>) type).asSubclass(target);
 266             }
 267         });
 268
 269     private final LoadingCache<Class<?>, NotificationCodecContext<?>> notificationsByClass = CacheBuilder.newBuilder()
 270         .build(new CacheLoader<>() {
 271             @Override
 272             public NotificationCodecContext<?> load(final Class<?> key) {
 273                 final var runtimeType = context.getTypes().bindingChild(JavaTypeName.create(key));
 274                 if (runtimeType instanceof NotificationRuntimeType notification) {
 275                     return new NotificationCodecContext<>(key, notification, BindingCodecContext.this);
 276                 } if (runtimeType != null) {
 277                     throw new IllegalArgumentException(key + " maps to unexpected " + runtimeType);
 278                 }
 279                 throw new IllegalArgumentException(key + " is not a known class");
 280             }
 281         });
 282     private final LoadingCache<Absolute, NotificationCodecContext<?>> notificationsByPath =
 283         CacheBuilder.newBuilder().build(new CacheLoader<>() {
 284             @Override
 285             public NotificationCodecContext<?> load(final Absolute key) {
 286                 final var cls = context.getClassForSchema(key);
 287                 try {
 288                     return getNotificationContext(cls.asSubclass(Notification.class));
 289                 } catch (ClassCastException e) {
 290                     throw new IllegalArgumentException("Path " + key + " does not represent a notification", e);
 291                 }
 292             }
 293         });
 294
 295     private final LoadingCache<Class<?>, ContainerLikeCodecContext<?>> rpcDataByClass =
 296         CacheBuilder.newBuilder().build(new CacheLoader<>() {
 297             @Override
 298             public ContainerLikeCodecContext<?> load(final Class<?> key) {
 299                 final var runtimeType = context.getTypes().findSchema(JavaTypeName.create(key))
 300                     .orElseThrow(() -> new IllegalArgumentException(key + " is not a known class"));
 301                 if (RpcInput.class.isAssignableFrom(key) && runtimeType instanceof InputRuntimeType input) {
 302                     // FIXME: accurate type
 303                     return new ContainerLikeCodecContext(key, input, BindingCodecContext.this);
 304                 } else if (RpcOutput.class.isAssignableFrom(key) && runtimeType instanceof OutputRuntimeType output) {
 305                     // FIXME: accurate type
 306                     return new ContainerLikeCodecContext(key, output, BindingCodecContext.this);
 307                 } else {
 308                     throw new IllegalArgumentException(key + " maps to unexpected " + runtimeType);
 309                 }
 310             }
 311         });
 312     private final LoadingCache<Absolute, RpcInputCodec<?>> rpcDataByPath =
 313         CacheBuilder.newBuilder().build(new CacheLoader<>() {
 314             @Override
 315             public RpcInputCodec<?> load(final Absolute key) {
 316                 final var rpcName = key.firstNodeIdentifier();
 317
 318                 final Class<? extends DataContainer> container = switch (key.lastNodeIdentifier().getLocalName()) {
 319                     case "input" -> context.getRpcInput(rpcName);
 320                     case "output" -> context.getRpcOutput(rpcName);
 321                     default -> throw new IllegalArgumentException("Unhandled path " + key);
 322                 };
 323
 324                 return getRpc(container);
 325             }
 326         });
 327
 328     private final @NonNull BindingClassLoader loader =
 329         BindingClassLoader.create(BindingCodecContext.class, BYTECODE_DIRECTORY);
 330     private final @NonNull InstanceIdentifierCodec instanceIdentifierCodec;
 331     private final @NonNull IdentityCodec identityCodec;
 332     private final @NonNull BindingRuntimeContext context;
 333
 334     public BindingCodecContext() {
 335         this(ServiceLoader.load(BindingRuntimeContext.class).findFirst()
 336             .orElseThrow(() -> new IllegalStateException("Failed to load BindingRuntimeContext")));
 337     }
 338
 339     public BindingCodecContext(final BindingRuntimeContext context) {
 340         this.context = requireNonNull(context, "Binding Runtime Context is required.");
 341         identityCodec = new IdentityCodec(context);
 342         instanceIdentifierCodec = new InstanceIdentifierCodec(this);
 343     }
 344
 345     @Override
 346     public BindingRuntimeContext getRuntimeContext() {
 347         return context;
 348     }
 349
 350     @Override
 351     public BindingClassLoader getLoader() {
 352         return loader;
 353     }
 354
 355     @Override
 356     public IdentityCodec getIdentityCodec() {
 357         return identityCodec;
 358     }
 359
 360     @Override
 361     public BindingInstanceIdentifierCodec getInstanceIdentifierCodec() {
 362         return instanceIdentifierCodec;
 363     }
 364
 365     @Override
 366     public <T extends YangData<T>> BindingYangDataCodecTreeNode<T> getYangDataCodec(final Class<T> yangDataClass) {
 367         throw new UnsupportedOperationException("Not implemented yet");
 368     }
 369
 370     @Override
 371     public BindingYangDataCodecTreeNode<?> getYangDataCodec(final YangDataName yangDataName) {
 372         throw new UnsupportedOperationException("Not implemented yet");
 373     }
 374
 375     @Override
 376     public DataContainerSerializer getEventStreamSerializer(final Class<?> type) {
 377         return serializers.getUnchecked(type);
 378     }
 379
 380     @Override
 381     public DataContainerStreamer<?> getDataContainerStreamer(final Class<?> type) {
 382         return streamers.getUnchecked(type);
 383     }
 384
 385     @Override
 386     public DataContainerSerializer getSerializer(final Class<? extends DataContainer> type) {
 387         return serializers.getUnchecked(type);
 388     }
 389
 390     @Override
 391     public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriterAndIdentifier(
 392             final InstanceIdentifier<?> path, final NormalizedNodeStreamWriter domWriter) {
 393         final var yangArgs = new ArrayList<PathArgument>();
 394         final var codecContext = getCodecContextNode(path, yangArgs);
 395         return Map.entry(YangInstanceIdentifier.of(yangArgs),
 396             new BindingToNormalizedStreamWriter(codecContext, domWriter));
 397     }
 398
 399     @Override
 400     public BindingStreamEventWriter newWriter(final InstanceIdentifier<?> path,
 401             final NormalizedNodeStreamWriter domWriter) {
 402         return new BindingToNormalizedStreamWriter(getCodecContextNode(path, null), domWriter);
 403     }
 404
 405     @Override
 406     public BindingStreamEventWriter newRpcWriter(final Class<? extends DataContainer> rpcInputOrOutput,
 407             final NormalizedNodeStreamWriter domWriter) {
 408         return new BindingToNormalizedStreamWriter(getRpc(rpcInputOrOutput), domWriter);
 409     }
 410
 411     @Override
 412     public BindingStreamEventWriter newNotificationWriter(final Class<? extends Notification<?>> notification,
 413             final NormalizedNodeStreamWriter domWriter) {
 414         return new BindingToNormalizedStreamWriter(getNotificationContext(notification), domWriter);
 415     }
 416
 417     @Override
 418     public BindingStreamEventWriter newActionInputWriter(final Class<? extends Action<?, ?, ?>> action,
 419             final NormalizedNodeStreamWriter domWriter) {
 420         return new BindingToNormalizedStreamWriter(getActionCodec(action).input(), domWriter);
 421     }
 422
 423     @Override
 424     public BindingStreamEventWriter newActionOutputWriter(final Class<? extends Action<?, ?, ?>> action,
 425             final NormalizedNodeStreamWriter domWriter) {
 426         return new BindingToNormalizedStreamWriter(getActionCodec(action).output(), domWriter);
 427     }
 428
 429     @NonNull DataContainerCodecContext<?, ?, ?> getCodecContextNode(final InstanceIdentifier<?> binding,
 430             final List<PathArgument> builder) {
 431         final var it = binding.getPathArguments().iterator();
 432         final var arg = it.next();
 433
 434         DataContainerCodecContext<?, ?, ?> current;
 435         final var caseType = arg.getCaseType();
 436         if (caseType.isPresent()) {
 437             final @NonNull Class<? extends DataObject> type = caseType.orElseThrow();
 438             final var choice = choicesByClass.getUnchecked(type);
 439             choice.addYangPathArgument(arg, builder);
 440             final var caze = choice.getStreamChild(type);
 441             caze.addYangPathArgument(arg, builder);
 442             current = caze.bindingPathArgumentChild(arg, builder);
 443         } else {
 444             final var child = getStreamChild(arg.getType());
 445             child.addYangPathArgument(arg, builder);
 446             current = child;
 447         }
 448
 449         while (it.hasNext()) {
 450             current = current.bindingPathArgumentChild(it.next(), builder);
 451         }
 452         return current;
 453     }
 454
 455     /**
 456      * Multi-purpose utility function. Traverse the codec tree, looking for
 457      * the appropriate codec for the specified {@link YangInstanceIdentifier}.
 458      * As a side-effect, gather all traversed binding {@link InstanceIdentifier.PathArgument}s
 459      * into the supplied collection.
 460      *
 461      * @param dom {@link YangInstanceIdentifier} which is to be translated
 462      * @param bindingArguments Collection for traversed path arguments
 463      * @return Codec for target node, or {@code null} if the node does not have a binding representation (choice, case,
 464      *         leaf).
 465      * @throws IllegalArgumentException if {@code dom} is empty
 466      */
 467     @Nullable BindingDataObjectCodecTreeNode<?> getCodecContextNode(final @NonNull YangInstanceIdentifier dom,
 468             final @Nullable Collection<InstanceIdentifier.PathArgument> bindingArguments) {
 469         final var it = dom.getPathArguments().iterator();
 470         if (!it.hasNext()) {
 471             throw new IllegalArgumentException("Path may not be empty");
 472         }
 473
 474         // First item is somewhat special:
 475         // 1. it has to be a NodeIdentifier, otherwise it is a malformed identifier and we do not find it
 476         var domArg = it.next();
 477         if (!(domArg instanceof NodeIdentifier)) {
 478             return null;
 479         }
 480         CodecContext nextNode = getOrRethrow(childrenByDomArg, domArg.getNodeType());
 481
 482         CodecContext currentNode;
 483         if (nextNode instanceof ListCodecContext<?> listNode) {
 484             // 2. if it is a list, we need to see if we are consuming another item.
 485             if (!it.hasNext()) {
 486                 // 2a: not further items: it boils down to a wildcard
 487                 if (bindingArguments != null) {
 488                     bindingArguments.add(listNode.getBindingPathArgument(null));
 489                 }
 490                 return listNode;
 491             }
 492
 493             // 2b: there is a next item: it should either be a NodeIdentifier or a NodeIdentifierWithPredicates, but it
 494             //     has to have the same node type
 495             final var nextArg = it.next();
 496             if (nextArg instanceof NodeWithValue || !nextArg.getNodeType().equals(domArg.getNodeType())) {
 497                 throw new IllegalArgumentException(
 498                     "List should be referenced two times in YANG Instance Identifier " + dom);
 499             }
 500             if (bindingArguments != null) {
 501                 bindingArguments.add(listNode.getBindingPathArgument(nextArg));
 502             }
 503             currentNode = nextNode;
 504         } else if (nextNode instanceof ChoiceCodecContext) {
 505             currentNode = nextNode;
 506         } else if (nextNode instanceof CommonDataObjectCodecContext<?, ?> firstContainer) {
 507             if (bindingArguments != null) {
 508                 bindingArguments.add(firstContainer.getBindingPathArgument(domArg));
 509             }
 510             currentNode = nextNode;
 511         } else {
 512             return null;
 513         }
 514
 515         ListCodecContext<?> currentList = null;
 516         while (it.hasNext()) {
 517             domArg = it.next();
 518             if (!(currentNode instanceof DataContainerCodecContext previous)) {
 519                 throw new IllegalArgumentException("Unexpected child of non-container node " + currentNode);
 520             }
 521
 522             nextNode = previous.yangPathArgumentChild(domArg);
 523
 524             /**
 525              * Compatibility case: if it's determined the node belongs to augmentation
 526              * then insert augmentation path argument in between.
 527              */
 528             if (nextNode instanceof AugmentationCodecContext<?> augmContext) {
 529                 if (bindingArguments != null) {
 530                     bindingArguments.add(augmContext.bindingArg());
 531                 }
 532                 currentNode = nextNode;
 533                 nextNode = augmContext.yangPathArgumentChild(domArg);
 534             }
 535
 536             /*
 537              * List representation in YANG Instance Identifier consists of two arguments: first is list as a whole,
 538              * second is list as an item so if it is /list it means list as whole, if it is /list/list - it is
 539              * wildcarded and if it is /list/list[key] it is concrete item, all this variations are expressed in
 540              * InstanceIdentifier as Item or IdentifiableItem
 541              */
 542             if (currentList != null) {
 543                 checkArgument(currentList == nextNode,
 544                         "List should be referenced two times in YANG Instance Identifier %s", dom);
 545
 546                 // We entered list, so now we have all information to emit
 547                 // list path using second list argument.
 548                 if (bindingArguments != null) {
 549                     bindingArguments.add(currentList.getBindingPathArgument(domArg));
 550                 }
 551                 currentList = null;
 552                 currentNode = nextNode;
 553             } else if (nextNode instanceof ListCodecContext<?> listNode) {
 554                 // We enter list, we do not update current Node yet,
 555                 // since we need to verify
 556                 currentList = listNode;
 557             } else if (nextNode instanceof ChoiceCodecContext) {
 558                 // We do not add path argument for choice, since
 559                 // it is not supported by binding instance identifier.
 560                 currentNode = nextNode;
 561             } else if (nextNode instanceof CommonDataObjectCodecContext<?, ?> containerNode) {
 562                 if (bindingArguments != null) {
 563                     bindingArguments.add(containerNode.getBindingPathArgument(domArg));
 564                 }
 565                 currentNode = nextNode;
 566             } else if (nextNode instanceof ValueNodeCodecContext) {
 567                 LOG.debug("Instance identifier referencing a leaf is not representable ({})", dom);
 568                 return null;
 569             }
 570         }
 571
 572         // Algorithm ended in list as whole representation
 573         // we sill need to emit identifier for list
 574         if (currentNode instanceof ChoiceCodecContext) {
 575             LOG.debug("Instance identifier targeting a choice is not representable ({})", dom);
 576             return null;
 577         }
 578         if (currentNode instanceof CaseCodecContext) {
 579             LOG.debug("Instance identifier targeting a case is not representable ({})", dom);
 580             return null;
 581         }
 582
 583         if (currentList != null) {
 584             if (bindingArguments != null) {
 585                 bindingArguments.add(currentList.getBindingPathArgument(null));
 586             }
 587             return currentList;
 588         }
 589         if (currentNode != null) {
 590             verify(currentNode instanceof BindingDataObjectCodecTreeNode, "Illegal return node %s for identifier %s",
 591                 currentNode, dom);
 592             return (BindingDataObjectCodecTreeNode<?>) currentNode;
 593         }
 594         return null;
 595     }
 596
 597     NotificationCodecContext<?> getNotificationContext(final Absolute notification) {
 598         return getOrRethrow(notificationsByPath, notification);
 599     }
 600
 601     private NotificationCodecContext<?> getNotificationContext(final Class<?> notification) {
 602         return getOrRethrow(notificationsByClass, notification);
 603     }
 604
 605     ContainerLikeCodecContext<?> getRpc(final Class<? extends DataContainer> rpcInputOrOutput) {
 606         return getOrRethrow(rpcDataByClass, rpcInputOrOutput);
 607     }
 608
 609     RpcInputCodec<?> getRpcInputCodec(final Absolute containerPath) {
 610         return getOrRethrow(rpcDataByPath, containerPath);
 611     }
 612
 613     ActionCodecContext getActionCodec(final Class<? extends Action<?, ?, ?>> action) {
 614         return getOrRethrow(actionsByClass, action);
 615     }
 616
 617     @Override
 618     public ImmutableMap<Method, ValueNodeCodecContext> getLeafNodes(final Class<?> type,
 619             final EffectiveStatement<?, ?> schema) {
 620         final var getterToLeafSchema = new HashMap<String, DataSchemaNode>();
 621         for (var stmt : schema.effectiveSubstatements()) {
 622             if (stmt instanceof TypedDataSchemaNode typedSchema) {
 623                 putLeaf(getterToLeafSchema, typedSchema);
 624             } else if (stmt instanceof AnydataSchemaNode anydataSchema) {
 625                 putLeaf(getterToLeafSchema, anydataSchema);
 626             } else if (stmt instanceof AnyxmlSchemaNode anyxmlSchema) {
 627                 putLeaf(getterToLeafSchema, anyxmlSchema);
 628             }
 629         }
 630         return getLeafNodesUsingReflection(type, getterToLeafSchema);
 631     }
 632
 633     private static void putLeaf(final Map<String, DataSchemaNode> map, final DataSchemaNode leaf) {
 634         map.put(BindingSchemaMapping.getGetterMethodName(leaf), leaf);
 635     }
 636
 637     private ImmutableMap<Method, ValueNodeCodecContext> getLeafNodesUsingReflection(
 638             final Class<?> parentClass, final Map<String, DataSchemaNode> getterToLeafSchema) {
 639         final var leaves = new HashMap<Method, ValueNodeCodecContext>();
 640         for (var method : parentClass.getMethods()) {
 641             // Only consider non-bridge methods with no arguments
 642             if (method.getParameterCount() == 0 && !method.isBridge()) {
 643                 final DataSchemaNode schema = getterToLeafSchema.get(method.getName());
 644
 645                 final ValueNodeCodecContext valueNode;
 646                 if (schema instanceof LeafSchemaNode leafSchema) {
 647                     // FIXME: MDSAL-670: this is not right as we need to find a concrete type, but this may return
 648                     //                   Object.class
 649                     final Class<?> valueType = method.getReturnType();
 650                     final ValueCodec<Object, Object> codec = getCodec(valueType, leafSchema.getType());
 651                     valueNode = LeafNodeCodecContext.of(leafSchema, codec, method.getName(), valueType,
 652                         context.modelContext());
 653                 } else if (schema instanceof LeafListSchemaNode leafListSchema) {
 654                     final Optional<Type> optType = ClassLoaderUtils.getFirstGenericParameter(
 655                         method.getGenericReturnType());
 656                     checkState(optType.isPresent(), "Failed to find return type for %s", method);
 657
 658                     final Class<?> valueType;
 659                     final Type genericType = optType.orElseThrow();
 660                     if (genericType instanceof Class<?> clazz) {
 661                         valueType = clazz;
 662                     } else if (genericType instanceof ParameterizedType parameterized) {
 663                         valueType = (Class<?>) parameterized.getRawType();
 664                     } else if (genericType instanceof WildcardType) {
 665                         // FIXME: MDSAL-670: this is not right as we need to find a concrete type
 666                         valueType = Object.class;
 667                     } else {
 668                         throw new IllegalStateException("Unexpected return type " + genericType);
 669                     }
 670
 671                     final ValueCodec<Object, Object> codec = getCodec(valueType, leafListSchema.getType());
 672                     valueNode = new LeafSetNodeCodecContext(leafListSchema, codec, method.getName());
 673                 } else if (schema instanceof AnyxmlSchemaNode anyxmlSchema) {
 674                     valueNode = new AnyxmlCodecContext<>(anyxmlSchema, method.getName(), opaqueReturnType(method),
 675                         loader);
 676                 } else if (schema instanceof AnydataSchemaNode anydataSchema) {
 677                     valueNode = new AnydataCodecContext<>(anydataSchema, method.getName(), opaqueReturnType(method),
 678                         loader);
 679                 } else {
 680                     verify(schema == null, "Unhandled schema %s for method %s", schema, method);
 681                     // We do not have schema for leaf, so we will ignore it (e.g. getClass).
 682                     continue;
 683                 }
 684
 685                 leaves.put(method, valueNode);
 686             }
 687         }
 688         return ImmutableMap.copyOf(leaves);
 689     }
 690
 691     // FIXME: this is probably not right w.r.t. nulls
 692     ValueCodec<Object, Object> getCodec(final Class<?> valueType, final TypeDefinition<?> instantiatedType) {
 693         if (BaseIdentity.class.isAssignableFrom(valueType)) {
 694             @SuppressWarnings({ "unchecked", "rawtypes" })
 695             final ValueCodec<Object, Object> casted = (ValueCodec) identityCodec;
 696             return casted;
 697         } else if (InstanceIdentifier.class.equals(valueType)) {
 698             @SuppressWarnings({ "unchecked", "rawtypes" })
 699             final ValueCodec<Object, Object> casted = (ValueCodec) instanceIdentifierCodec;
 700             return casted;
 701         } else if (BindingReflections.isBindingClass(valueType)) {
 702             return getCodecForBindingClass(valueType, instantiatedType);
 703         }
 704         // FIXME: MDSAL-670: this is right for most situations, but we must never return NOOP_CODEC for
 705         //                   valueType=Object.class
 706         return SchemaUnawareCodec.NOOP_CODEC;
 707     }
 708
 709     @SuppressWarnings("checkstyle:illegalCatch")
 710     // FIXME: this is probably not right w.r.t. nulls
 711     private ValueCodec<Object, Object> getCodecForBindingClass(final Class<?> valueType,
 712             final TypeDefinition<?> typeDef) {
 713         if (typeDef instanceof IdentityrefTypeDefinition) {
 714             return new CompositeValueCodec.OfIdentity(valueType, identityCodec);
 715         } else if (typeDef instanceof InstanceIdentifierTypeDefinition) {
 716             return new CompositeValueCodec.OfInstanceIdentifier(valueType, instanceIdentifierCodec);
 717         } else if (typeDef instanceof UnionTypeDefinition unionType) {
 718             try {
 719                 return UnionTypeCodec.of(valueType, unionType, this);
 720             } catch (Exception e) {
 721                 throw new IllegalStateException("Unable to load codec for " + valueType, e);
 722             }
 723         } else if (typeDef instanceof LeafrefTypeDefinition) {
 724             final var typeWithSchema = context.getTypeWithSchema(valueType);
 725             final var schema = typeWithSchema.statement();
 726             final TypeDefinition<?> def;
 727             if (schema instanceof TypeDefinitionAware typeDefAware) {
 728                 def = typeDefAware.getTypeDefinition();
 729             } else if (schema instanceof TypeAware typeAware) {
 730                 def = typeAware.getType();
 731             } else {
 732                 throw new IllegalStateException("Unexpected schema " + schema);
 733             }
 734             return getCodec(valueType, def);
 735         }
 736         return SchemaUnawareCodec.of(valueType, typeDef);
 737     }
 738
 739     @Override
 740     public IdentifiableItemCodec getPathArgumentCodec(final Class<?> listClz, final ListRuntimeType type) {
 741         final Optional<Class<Key<?>>> optIdentifier = ClassLoaderUtils.findFirstGenericArgument(listClz,
 742                 KeyAware.class);
 743         checkState(optIdentifier.isPresent(), "Failed to find identifier for %s", listClz);
 744
 745         final Class<Key<?>> identifier = optIdentifier.orElseThrow();
 746         final Map<QName, ValueContext> valueCtx = new HashMap<>();
 747         for (final ValueNodeCodecContext leaf : getLeafNodes(identifier, type.statement()).values()) {
 748             final QName name = leaf.getDomPathArgument().getNodeType();
 749             valueCtx.put(name, new ValueContext(identifier, leaf));
 750         }
 751         return IdentifiableItemCodec.of(type.statement(), identifier, listClz, valueCtx);
 752     }
 753
 754     @Override
 755     @SuppressWarnings("unchecked")
 756     public <E extends DataObject> DataContainerCodecContext<E, ?, ?> getStreamChild(final Class<E> childClass) {
 757         final var result = Notification.class.isAssignableFrom(childClass) ? getNotificationContext(childClass)
 758             : getOrRethrow(childrenByClass, childClass);
 759         return (DataContainerCodecContext<E, ?, ?>) result;
 760     }
 761
 762     @Override
 763     @SuppressWarnings("unchecked")
 764     public <A extends Augmentation<?>> BindingAugmentationCodecTreeNode<A> getAugmentationCodec(
 765             final InstanceIdentifier<A> path) {
 766         final var codecContext = getCodecContextNode(path, null);
 767         if (codecContext instanceof BindingAugmentationCodecTreeNode) {
 768             return (BindingAugmentationCodecTreeNode<A>) codecContext;
 769         }
 770         throw new IllegalArgumentException(path + " does not refer to an Augmentation");
 771     }
 772
 773     @Override
 774     @SuppressWarnings("unchecked")
 775     public <T extends DataObject> BindingDataObjectCodecTreeNode<T> getDataObjectCodec(
 776             final InstanceIdentifier<T> path) {
 777         final var codecContext = getCodecContextNode(path, null);
 778         if (codecContext instanceof BindingDataObjectCodecTreeNode) {
 779             return (BindingDataObjectCodecTreeNode<T>) codecContext;
 780         }
 781         throw new IllegalArgumentException(path + " does not refer to a plain DataObject");
 782     }
 783
 784     @Override
 785     @SuppressWarnings("unchecked")
 786     public <T extends DataObject> CodecWithPath<T> getSubtreeCodecWithPath(final InstanceIdentifier<T> path) {
 787         final var yangArgs = new ArrayList<PathArgument>();
 788         final var codecContext = getCodecContextNode(path, yangArgs);
 789
 790         // TODO Do we need defensive check here?
 791         return new CodecWithPath<>((CommonDataObjectCodecTreeNode<T>) codecContext,
 792             YangInstanceIdentifier.of(yangArgs));
 793     }
 794
 795     @Override
 796     @SuppressWarnings("unchecked")
 797     public <T extends DataObject> CommonDataObjectCodecTreeNode<T> getSubtreeCodec(final InstanceIdentifier<T> path) {
 798         // TODO Do we need defensive check here?
 799         return (CommonDataObjectCodecTreeNode<T>) getCodecContextNode(path, null);
 800     }
 801
 802     @Override
 803     public BindingCodecTreeNode getSubtreeCodec(final YangInstanceIdentifier path) {
 804         return getCodecContextNode(requireNonNull(path), null);
 805     }
 806
 807     @Override
 808     public BindingCodecTreeNode getSubtreeCodec(final Absolute path) {
 809         throw new UnsupportedOperationException("Not implemented yet.");
 810     }
 811
 812     @Override
 813     public YangInstanceIdentifier toYangInstanceIdentifier(final InstanceIdentifier<?> binding) {
 814         return instanceIdentifierCodec.fromBinding(binding);
 815     }
 816
 817     @Override
 818     public <T extends DataObject> InstanceIdentifier<T> fromYangInstanceIdentifier(final YangInstanceIdentifier dom) {
 819         return instanceIdentifierCodec.toBinding(dom);
 820     }
 821
 822     @Override
 823     public <A extends Augmentation<?>> AugmentationResult toNormalizedAugmentation(final InstanceIdentifier<A> path,
 824             final A data) {
 825         final var result = toNormalizedNode(path, data);
 826         if (result instanceof AugmentationResult augment) {
 827             return augment;
 828         }
 829         throw new IllegalArgumentException(path + " does not identify an Augmentation");
 830     }
 831
 832     @Override
 833     public <T extends DataObject> NodeResult toNormalizedDataObject(final InstanceIdentifier<T> path, final T data) {
 834         final var result = toNormalizedNode(path, data);
 835         if (result instanceof NodeResult node) {
 836             return node;
 837         }
 838         throw new IllegalArgumentException(path + " does not identify a plain DataObject");
 839     }
 840
 841     @Override
 842     public <T extends DataObject> NormalizedResult toNormalizedNode(final InstanceIdentifier<T> path, final T data) {
 843         // We create Binding Stream Writer which translates from Binding to Normalized Nodes
 844         final var yangArgs = new ArrayList<PathArgument>();
 845         final var codecContext = getCodecContextNode(path, yangArgs);
 846         final var yangPath = YangInstanceIdentifier.of(yangArgs);
 847
 848         // We create DOM stream writer which produces normalized nodes
 849         final var result = new NormalizationResultHolder();
 850         final var domWriter = ImmutableNormalizedNodeStreamWriter.from(result);
 851         final var bindingWriter = new BindingToNormalizedStreamWriter(codecContext, domWriter);
 852         final var augment = codecContext instanceof BindingAugmentationCodecTreeNode<?> augmentNode ? augmentNode
 853             : null;
 854
 855         try {
 856             // Augmentations do not have a representation, so we are faking a ContainerNode as the parent and we will be
 857             // extracting the resulting children.
 858             if (augment != null) {
 859                 domWriter.startContainerNode(FAKE_NODEID, NormalizedNodeStreamWriter.UNKNOWN_SIZE);
 860             }
 861
 862             // We get serializer which reads binding data and uses Binding To Normalized Node writer to write result
 863             getSerializer(path.getTargetType()).serialize(data, bindingWriter);
 864
 865             if (augment != null) {
 866                 domWriter.endNode();
 867             }
 868         } catch (final IOException e) {
 869             LOG.error("Unexpected failure while serializing path {} data {}", path, data, e);
 870             throw new IllegalStateException("Failed to create normalized node", e);
 871         }
 872
 873         // Terminate the fake container and extract it to the result
 874         if (augment != null) {
 875             return new AugmentationResult(yangPath, augment.childPathArguments(),
 876                 ImmutableList.copyOf(((ContainerNode) result.getResult().data()).body()));
 877         }
 878         return new NodeResult(yangPath, result.getResult().data());
 879     }
 880
 881     @Override
 882     public Entry<InstanceIdentifier<?>, DataObject> fromNormalizedNode(final YangInstanceIdentifier path,
 883             final NormalizedNode data) {
 884         if (notBindingRepresentable(data)) {
 885             return null;
 886         }
 887
 888         final var builder = new ArrayList<InstanceIdentifier.PathArgument>();
 889         final var codec = getCodecContextNode(path, builder);
 890         if (codec == null) {
 891             if (data != null) {
 892                 LOG.warn("Path {} does not have a binding equivalent, should have been caught earlier ({})", path,
 893                     data.getClass());
 894             }
 895             return null;
 896         }
 897
 898         final DataObject lazyObj = codec.deserialize(data);
 899         final InstanceIdentifier<?> bindingPath = InstanceIdentifier.unsafeOf(builder);
 900         return Map.entry(bindingPath, lazyObj);
 901     }
 902
 903     @Override
 904     public BaseNotification fromNormalizedNodeNotification(final Absolute path, final ContainerNode data) {
 905         return getNotificationContext(path).deserialize(data);
 906     }
 907
 908     @Override
 909     public BaseNotification fromNormalizedNodeNotification(final Absolute path, final ContainerNode data,
 910             final Instant eventInstant) {
 911         return eventInstant == null ? fromNormalizedNodeNotification(path, data)
 912                 : getNotificationContext(path).deserialize(data, eventInstant);
 913     }
 914
 915     @Override
 916     public DataObject fromNormalizedNodeRpcData(final Absolute containerPath, final ContainerNode data) {
 917         return getRpcInputCodec(containerPath).deserialize(data);
 918     }
 919
 920     @Override
 921     public <T extends RpcInput> T fromNormalizedNodeActionInput(final Class<? extends Action<?, ?, ?>> action,
 922             final ContainerNode input) {
 923         return (T) requireNonNull(getActionCodec(action).input().deserialize(requireNonNull(input)));
 924     }
 925
 926     @Override
 927     public <T extends RpcOutput> T fromNormalizedNodeActionOutput(final Class<? extends Action<?, ?, ?>> action,
 928             final ContainerNode output) {
 929         return (T) requireNonNull(getActionCodec(action).output().deserialize(requireNonNull(output)));
 930     }
 931
 932     @Override
 933     @SuppressFBWarnings("BC_UNCONFIRMED_CAST")
 934     public ContainerNode toNormalizedNodeNotification(final Notification<?> data) {
 935         // FIXME: Should the cast to DataObject be necessary?
 936         return serializeDataObject((DataObject) data,
 937             (ctx, iface, domWriter) -> ctx.newNotificationWriter(
 938                 (Class<? extends Notification<?>>) iface.asSubclass(Notification.class), domWriter));
 939     }
 940
 941     @Override
 942     public ContainerNode toNormalizedNodeNotification(final Absolute path, final BaseNotification data) {
 943         checkArgument(data instanceof DataObject, "Unexpected data %s", data);
 944         @SuppressWarnings("rawtypes")
 945         final NotificationCodecContext notifContext = getNotificationContext(path);
 946         @SuppressWarnings("unchecked")
 947         final var result = notifContext.serialize((DataObject) data);
 948         verify(result instanceof ContainerNode, "Unexpected result %s from %s", result, data);
 949         return (ContainerNode) result;
 950     }
 951
 952     @Override
 953     @SuppressFBWarnings("BC_UNCONFIRMED_CAST")
 954     public ContainerNode toNormalizedNodeRpcData(final DataContainer data) {
 955         // FIXME: Should the cast to DataObject be necessary?
 956         return serializeDataObject((DataObject) data, BindingNormalizedNodeWriterFactory::newRpcWriter);
 957     }
 958
 959     @Override
 960     public ContainerNode toNormalizedNodeActionInput(final Class<? extends Action<?, ?, ?>> action,
 961             final RpcInput input) {
 962         return serializeDataObject(input,(ctx, iface, domWriter) -> ctx.newActionInputWriter(action, domWriter));
 963     }
 964
 965     @Override
 966     public ContainerNode toNormalizedNodeActionOutput(final Class<? extends Action<?, ?, ?>> action,
 967             final RpcOutput output) {
 968         return serializeDataObject(output, (ctx, iface, domWriter) -> ctx.newActionOutputWriter(action, domWriter));
 969     }
 970
 971     @Override
 972     protected NodeIdentifier actionInputName(final Class<? extends Action<?, ?, ?>> action) {
 973         return verifyNotNull(getActionCodec(action).input().getDomPathArgument());
 974     }
 975
 976     @Override
 977     protected NodeIdentifier actionOutputName(final Class<? extends Action<?, ?, ?>> action) {
 978         return verifyNotNull(getActionCodec(action).output().getDomPathArgument());
 979     }
 980
 981     private <T extends DataContainer> @NonNull ContainerNode serializeDataObject(final DataObject data,
 982             final WriterFactoryMethod<T> newWriter) {
 983         final var result = new NormalizationResultHolder();
 984         // We create DOM stream writer which produces normalized nodes
 985         final var domWriter = ImmutableNormalizedNodeStreamWriter.from(result);
 986         final Class<? extends DataObject> type = data.implementedInterface();
 987         @SuppressWarnings("unchecked")
 988         final BindingStreamEventWriter writer = newWriter.createWriter(this, (Class<T>) type, domWriter);
 989         try {
 990             getSerializer(type).serialize(data, writer);
 991         } catch (final IOException e) {
 992             LOG.error("Unexpected failure while serializing data {}", data, e);
 993             throw new IllegalStateException("Failed to create normalized node", e);
 994         }
 995         return (ContainerNode) result.getResult().data();
 996     }
 997
 998     private static boolean notBindingRepresentable(final NormalizedNode data) {
 999         // ValueNode covers LeafNode and LeafSetEntryNode
1000         return data instanceof ValueNode
1001             || data instanceof MapNode || data instanceof UnkeyedListNode
1002             || data instanceof ChoiceNode
1003             || data instanceof LeafSetNode;
1004     }
1005
1006     private static <K,V> V getOrRethrow(final LoadingCache<K, V> cache, final K key) {
1007         try {
1008             return cache.getUnchecked(key);
1009         } catch (UncheckedExecutionException e) {
1010             final var cause = e.getCause();
1011             if (cause != null) {
1012                 Throwables.throwIfUnchecked(cause);
1013             }
1014             throw e;
1015         }
1016     }
1017
1018     @SuppressWarnings("rawtypes")
1019     private static Class<? extends OpaqueObject> opaqueReturnType(final Method method) {
1020         final Class<?> valueType = method.getReturnType();
1021         verify(OpaqueObject.class.isAssignableFrom(valueType), "Illegal value type %s", valueType);
1022         return valueType.asSubclass(OpaqueObject.class);
1023     }
1024
1025     @FunctionalInterface
1026     private interface WriterFactoryMethod<T extends DataContainer> {
1027         BindingStreamEventWriter createWriter(@NonNull BindingNormalizedNodeWriterFactory factory,
1028                 @NonNull Class<? extends T> bindingClass, @NonNull NormalizedNodeStreamWriter domWriter);
1029     }
1030 }