2 * Copyright (c) 2019 PANTHEON.tech, s.r.o. 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.dom.codec.impl;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Verify.verify;
12 import static java.util.Objects.requireNonNull;
14 import com.google.common.base.Throwables;
15 import java.lang.invoke.MethodHandle;
16 import java.lang.invoke.MethodHandles;
17 import java.lang.invoke.MethodType;
18 import java.lang.reflect.Constructor;
19 import javax.xml.transform.dom.DOMSource;
20 import net.bytebuddy.ByteBuddy;
21 import net.bytebuddy.dynamic.DynamicType.Builder;
22 import net.bytebuddy.jar.asm.Opcodes;
23 import org.eclipse.jdt.annotation.NonNull;
24 import org.opendaylight.mdsal.binding.dom.codec.api.BindingOpaqueObjectCodecTreeNode;
25 import org.opendaylight.mdsal.binding.dom.codec.loader.CodecClassLoader;
26 import org.opendaylight.mdsal.binding.dom.codec.loader.CodecClassLoader.GeneratorResult;
27 import org.opendaylight.yangtools.concepts.Codec;
28 import org.opendaylight.yangtools.yang.binding.OpaqueData;
29 import org.opendaylight.yangtools.yang.binding.OpaqueObject;
30 import org.opendaylight.yangtools.yang.data.api.schema.AnyXmlNode;
31 import org.opendaylight.yangtools.yang.data.api.schema.ForeignDataNode;
32 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
33 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
34 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
35 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
37 abstract class OpaqueNodeCodecContext<T extends OpaqueObject<T>> extends ValueNodeCodecContext
38 implements BindingOpaqueObjectCodecTreeNode<T> {
39 static final class AnyXml<T extends OpaqueObject<T>> extends OpaqueNodeCodecContext<T> {
40 AnyXml(final AnyXmlSchemaNode schema, final String getterName, final Class<T> bindingClass,
41 final CodecClassLoader loader) {
42 super(schema, getterName, bindingClass, loader);
46 ForeignDataNode<?, ?> serializedData(final OpaqueData<?> opaqueData) {
47 final Class<?> model = opaqueData.getObjectModel();
48 verify(DOMSource.class.isAssignableFrom(model), "Cannot just yet support object model %s", model);
49 return Builders.anyXmlBuilder().withNodeIdentifier(getDomPathArgument())
50 .withValue((DOMSource) opaqueData.getData()).build();
54 private static final MethodType CONSTRUCTOR_TYPE = MethodType.methodType(OpaqueObject.class,
56 @SuppressWarnings("rawtypes")
57 private static final Builder<CodecOpaqueObject> TEMPLATE = new ByteBuddy().subclass(CodecOpaqueObject.class)
58 .modifiers(Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL | Opcodes.ACC_SYNTHETIC);
60 private final Codec<Object, Object> valueCodec = new Codec<Object, Object>() {
62 public Object serialize(final Object input) {
63 checkArgument(bindingClass.isInstance(input), "Unexpected input %s", input);
64 // FIXME: this works for DOMSource only, for generalization we need to pass down the object model, too
65 final OpaqueData<?> opaqueData = bindingClass.cast(input).getValue();
66 final Object data = opaqueData.getData();
67 checkArgument(data instanceof DOMSource, "Unexpected data %s", data);
72 public Object deserialize(final Object input) {
73 checkArgument(input instanceof NormalizedNode, "Unexpected input %s", input);
74 return OpaqueNodeCodecContext.this.deserializeObject((NormalizedNode<?, ?>) input);
78 private final MethodHandle proxyConstructor;
79 private final @NonNull Class<T> bindingClass;
81 OpaqueNodeCodecContext(final DataSchemaNode schema, final String getterName, final Class<T> bindingClass,
82 final CodecClassLoader loader) {
83 super(schema, getterName, null);
84 this.bindingClass = requireNonNull(bindingClass);
85 proxyConstructor = createImpl(loader, bindingClass);
89 public final Class<T> getBindingClass() {
94 public final T deserialize(final NormalizedNode<?, ?> data) {
95 checkArgument(data instanceof ForeignDataNode, "Unexpected value %s", data);
96 final ForeignDataNode<?, ?> foreignData = (ForeignDataNode<?, ?>) data;
97 // Streaming cannot support anything but DOMSource-based AnyxmlNodes.
98 verify(foreignData instanceof AnyXmlNode, "Variable node %s not supported yet", foreignData);
100 return bindingClass.cast(createBindingProxy(new ForeignOpaqueData<>(foreignData)));
104 public final ForeignDataNode<?, ?> serialize(final T data) {
105 final OpaqueData<?> opaqueData = data.getValue();
106 return opaqueData instanceof ForeignOpaqueData ? ((ForeignOpaqueData<?>) opaqueData).domData()
107 : serializedData(opaqueData);
111 protected final @NonNull Object deserializeObject(final NormalizedNode<?, ?> normalizedNode) {
112 return deserialize(normalizedNode);
116 Codec<Object, Object> getValueCodec() {
120 abstract @NonNull ForeignDataNode<?, ?> serializedData(OpaqueData<?> opaqueData);
122 @SuppressWarnings("checkstyle:illegalCatch")
123 private OpaqueObject<?> createBindingProxy(final OpaqueData<?> data) {
125 return (OpaqueObject<?>) proxyConstructor.invokeExact(data);
126 } catch (final Throwable e) {
127 Throwables.throwIfUnchecked(e);
128 throw new IllegalStateException(e);
132 private static MethodHandle createImpl(final CodecClassLoader rootLoader, final Class<?> bindingClass) {
133 final Class<?> proxyClass = rootLoader.generateClass(bindingClass, "codecImpl",
134 (loader, fqcn, bindingInterface) -> GeneratorResult.of(TEMPLATE
136 .implement(bindingInterface)
141 ctor = proxyClass.getDeclaredConstructor(OpaqueData.class);
142 } catch (NoSuchMethodException e) {
143 throw new LinkageError("Failed to acquire constructor for prototype " + proxyClass, e);
146 return MethodHandles.publicLookup().unreflectConstructor(ctor).asType(CONSTRUCTOR_TYPE);
147 } catch (IllegalAccessException e) {
148 throw new LinkageError("Failed to access constructor for prototype " + proxyClass, e);