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.AbstractIllegalArgumentCodec;
28 import org.opendaylight.yangtools.concepts.IllegalArgumentCodec;
29 import org.opendaylight.yangtools.yang.binding.OpaqueData;
30 import org.opendaylight.yangtools.yang.binding.OpaqueObject;
31 import org.opendaylight.yangtools.yang.data.api.schema.AnydataNode;
32 import org.opendaylight.yangtools.yang.data.api.schema.DOMSourceAnyxmlNode;
33 import org.opendaylight.yangtools.yang.data.api.schema.ForeignDataNode;
34 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
35 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
36 import org.opendaylight.yangtools.yang.model.api.AnyDataSchemaNode;
37 import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
38 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
40 abstract class OpaqueNodeCodecContext<T extends OpaqueObject<T>> extends ValueNodeCodecContext
41 implements BindingOpaqueObjectCodecTreeNode<T> {
42 static final class AnyXml<T extends OpaqueObject<T>> extends OpaqueNodeCodecContext<T> {
43 AnyXml(final AnyXmlSchemaNode schema, final String getterName, final Class<T> bindingClass,
44 final CodecClassLoader loader) {
45 super(schema, getterName, bindingClass, loader);
49 ForeignDataNode<?, ?> serializedData(final OpaqueData<?> opaqueData) {
50 final Class<?> model = opaqueData.getObjectModel();
51 verify(DOMSource.class.isAssignableFrom(model), "Cannot just yet support object model %s", model);
52 return Builders.anyXmlBuilder().withNodeIdentifier(getDomPathArgument())
53 .withValue((DOMSource) opaqueData.getData()).build();
57 T deserialize(final ForeignDataNode<?, ?> foreignData) {
58 // Streaming cannot support anything but DOMSource-based AnyxmlNodes.
59 verify(foreignData instanceof DOMSourceAnyxmlNode, "Variable node %s not supported yet", foreignData);
60 return super.deserialize(foreignData);
64 static final class AnyData<T extends OpaqueObject<T>> extends OpaqueNodeCodecContext<T> {
65 AnyData(final AnyDataSchemaNode schema, final String getterName, final Class<T> bindingClass,
66 final CodecClassLoader loader) {
67 super(schema, getterName, bindingClass, loader);
71 AnydataNode<?> serializedData(final OpaqueData<?> opaqueData) {
72 return buildAnydata(opaqueData);
75 private <M> @NonNull AnydataNode<M> buildAnydata(final OpaqueData<M> opaqueData) {
76 return Builders.anydataBuilder(opaqueData.getObjectModel()).withNodeIdentifier(getDomPathArgument())
77 .withValue(opaqueData.getData()).build();
81 private static final MethodType CONSTRUCTOR_TYPE = MethodType.methodType(OpaqueObject.class,
83 @SuppressWarnings("rawtypes")
84 private static final Builder<CodecOpaqueObject> TEMPLATE = new ByteBuddy().subclass(CodecOpaqueObject.class)
85 .modifiers(Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL | Opcodes.ACC_SYNTHETIC);
87 private final IllegalArgumentCodec<Object, Object> valueCodec = new AbstractIllegalArgumentCodec<>() {
89 protected Object serializeImpl(final Object input) {
90 checkArgument(bindingClass.isInstance(input), "Unexpected input %s", input);
91 // FIXME: this works for DOMSource only, for generalization we need to pass down the object model, too
92 final OpaqueData<?> opaqueData = bindingClass.cast(input).getValue();
93 final Object data = opaqueData.getData();
94 checkArgument(data instanceof DOMSource, "Unexpected data %s", data);
99 protected Object deserializeImpl(final Object input) {
100 checkArgument(input instanceof NormalizedNode, "Unexpected input %s", input);
101 return OpaqueNodeCodecContext.this.deserializeObject((NormalizedNode<?, ?>) input);
105 private final MethodHandle proxyConstructor;
106 private final @NonNull Class<T> bindingClass;
108 OpaqueNodeCodecContext(final DataSchemaNode schema, final String getterName, final Class<T> bindingClass,
109 final CodecClassLoader loader) {
110 super(schema, getterName, null);
111 this.bindingClass = requireNonNull(bindingClass);
112 proxyConstructor = createImpl(loader, bindingClass);
116 public final Class<T> getBindingClass() {
121 public final T deserialize(final NormalizedNode<?, ?> data) {
122 checkArgument(data instanceof ForeignDataNode, "Unexpected value %s", data);
123 return deserialize((ForeignDataNode<?, ?>) data);
126 T deserialize(final ForeignDataNode<?, ?> foreignData) {
127 return bindingClass.cast(createBindingProxy(new ForeignOpaqueData<>(foreignData)));
131 public final ForeignDataNode<?, ?> serialize(final T data) {
132 final OpaqueData<?> opaqueData = data.getValue();
133 return opaqueData instanceof ForeignOpaqueData ? ((ForeignOpaqueData<?>) opaqueData).domData()
134 : serializedData(opaqueData);
138 protected final @NonNull Object deserializeObject(final NormalizedNode<?, ?> normalizedNode) {
139 return deserialize(normalizedNode);
143 IllegalArgumentCodec<Object, Object> getValueCodec() {
147 abstract @NonNull ForeignDataNode<?, ?> serializedData(OpaqueData<?> opaqueData);
149 @SuppressWarnings("checkstyle:illegalCatch")
150 private OpaqueObject<?> createBindingProxy(final OpaqueData<?> data) {
152 return (OpaqueObject<?>) proxyConstructor.invokeExact(data);
153 } catch (final Throwable e) {
154 Throwables.throwIfUnchecked(e);
155 throw new IllegalStateException(e);
159 private static MethodHandle createImpl(final CodecClassLoader rootLoader, final Class<?> bindingClass) {
160 final Class<?> proxyClass = rootLoader.generateClass(bindingClass, "codecImpl",
161 (loader, fqcn, bindingInterface) -> GeneratorResult.of(TEMPLATE
163 .implement(bindingInterface)
168 ctor = proxyClass.getDeclaredConstructor(OpaqueData.class);
169 } catch (NoSuchMethodException e) {
170 throw new LinkageError("Failed to acquire constructor for prototype " + proxyClass, e);
173 return MethodHandles.publicLookup().unreflectConstructor(ctor).asType(CONSTRUCTOR_TYPE);
174 } catch (IllegalAccessException e) {
175 throw new LinkageError("Failed to access constructor for prototype " + proxyClass, e);