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.mdsal.binding.dom.codec.impl;
10 import static com.google.common.base.Verify.verify;
11 import static java.util.Objects.requireNonNull;
13 import java.lang.invoke.MethodHandles;
14 import java.lang.invoke.VarHandle;
15 import org.eclipse.jdt.annotation.NonNull;
16 import org.opendaylight.mdsal.binding.dom.codec.api.CommonDataObjectCodecTreeNode.ChildAddressabilitySummary;
17 import org.opendaylight.mdsal.binding.dom.codec.impl.NodeCodecContext.CodecContextFactory;
18 import org.opendaylight.mdsal.binding.runtime.api.CompositeRuntimeType;
19 import org.opendaylight.mdsal.binding.runtime.api.NotificationRuntimeType;
20 import org.opendaylight.mdsal.binding.runtime.api.RuntimeType;
21 import org.opendaylight.mdsal.binding.runtime.api.RuntimeTypeContainer;
22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.Item;
23 import org.opendaylight.yangtools.yang.common.QName;
24 import org.opendaylight.yangtools.yang.common.QNameModule;
25 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
26 import org.opendaylight.yangtools.yang.model.api.AnydataSchemaNode;
27 import org.opendaylight.yangtools.yang.model.api.AnyxmlSchemaNode;
28 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
29 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
30 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
31 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
32 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
33 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
34 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
35 import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
36 import org.slf4j.Logger;
37 import org.slf4j.LoggerFactory;
39 abstract sealed class DataContainerCodecPrototype<T extends RuntimeTypeContainer> implements NodeContextSupplier
40 permits AugmentationCodecPrototype, DataObjectCodecPrototype {
41 private static final Logger LOG = LoggerFactory.getLogger(DataContainerCodecPrototype.class);
43 private static final VarHandle INSTANCE;
47 INSTANCE = MethodHandles.lookup().findVarHandle(DataContainerCodecPrototype.class,
48 "instance", DataContainerCodecContext.class);
49 } catch (NoSuchFieldException | IllegalAccessException e) {
50 throw new ExceptionInInitializerError(e);
54 private final @NonNull T type;
55 private final @NonNull QNameModule namespace;
56 private final @NonNull CodecContextFactory factory;
57 private final @NonNull Item<?> bindingArg;
58 private final @NonNull ChildAddressabilitySummary childAddressabilitySummary;
60 // multiple paths represent augmentation wrapper
61 // FIXME: this means it is either this or 'childArgs'
63 // Accessed via INSTANCE
64 @SuppressWarnings("unused")
65 private volatile DataContainerCodecContext<?, T> instance;
67 DataContainerCodecPrototype(final Item<?> bindingArg, final QNameModule namespace, final T type,
68 final CodecContextFactory factory) {
69 this.bindingArg = requireNonNull(bindingArg);
70 this.namespace = requireNonNull(namespace);
71 this.type = requireNonNull(type);
72 this.factory = requireNonNull(factory);
74 childAddressabilitySummary = type instanceof RuntimeType runtimeType
75 ? computeChildAddressabilitySummary(runtimeType.statement())
76 // BindingRuntimeTypes, does not matter
77 : ChildAddressabilitySummary.MIXED;
80 private static @NonNull ChildAddressabilitySummary computeChildAddressabilitySummary(final Object nodeSchema) {
81 // FIXME: rework this to work on EffectiveStatements
82 if (nodeSchema instanceof DataNodeContainer contaner) {
83 boolean haveAddressable = false;
84 boolean haveUnaddressable = false;
85 for (DataSchemaNode child : contaner.getChildNodes()) {
86 if (child instanceof ContainerSchemaNode || child instanceof AugmentationSchemaNode) {
87 haveAddressable = true;
88 } else if (child instanceof ListSchemaNode list) {
89 if (list.getKeyDefinition().isEmpty()) {
90 haveUnaddressable = true;
92 haveAddressable = true;
94 } else if (child instanceof AnydataSchemaNode || child instanceof AnyxmlSchemaNode
95 || child instanceof TypedDataSchemaNode) {
96 haveUnaddressable = true;
97 } else if (child instanceof ChoiceSchemaNode choice) {
98 switch (computeChildAddressabilitySummary(choice)) {
99 case ADDRESSABLE -> haveAddressable = true;
100 case UNADDRESSABLE -> haveUnaddressable = true;
102 haveAddressable = true;
103 haveUnaddressable = true;
105 default -> throw new IllegalStateException("Unhandled accessibility summary for " + child);
108 LOG.warn("Unhandled child node {}", child);
112 if (!haveAddressable) {
113 // Empty or all are unaddressable
114 return ChildAddressabilitySummary.UNADDRESSABLE;
117 return haveUnaddressable ? ChildAddressabilitySummary.MIXED : ChildAddressabilitySummary.ADDRESSABLE;
118 } else if (nodeSchema instanceof ChoiceSchemaNode choice) {
119 return computeChildAddressabilitySummary(choice);
122 // No child nodes possible: return unaddressable
123 return ChildAddressabilitySummary.UNADDRESSABLE;
126 private static @NonNull ChildAddressabilitySummary computeChildAddressabilitySummary(
127 final ChoiceSchemaNode choice) {
128 boolean haveAddressable = false;
129 boolean haveUnaddressable = false;
130 for (CaseSchemaNode child : choice.getCases()) {
131 switch (computeChildAddressabilitySummary(child)) {
133 haveAddressable = true;
136 haveUnaddressable = true;
139 // A child is mixed, which means we are mixed, too
140 return ChildAddressabilitySummary.MIXED;
142 throw new IllegalStateException("Unhandled accessibility summary for " + child);
146 if (!haveAddressable) {
147 // Empty or all are unaddressable
148 return ChildAddressabilitySummary.UNADDRESSABLE;
151 return haveUnaddressable ? ChildAddressabilitySummary.MIXED : ChildAddressabilitySummary.ADDRESSABLE;
154 static <T extends CompositeRuntimeType> DataContainerCodecPrototype<T> from(final Class<?> cls, final T type,
155 final CodecContextFactory factory) {
156 return new DataObjectCodecPrototype<>(cls, createIdentifier(type), type, factory);
159 static <T extends CompositeRuntimeType> DataContainerCodecPrototype<T> from(final Item<?> bindingArg, final T type,
160 final CodecContextFactory factory) {
161 return new DataObjectCodecPrototype<>(bindingArg, createIdentifier(type), type, factory);
164 static DataContainerCodecPrototype<NotificationRuntimeType> from(final Class<?> augClass,
165 final NotificationRuntimeType schema, final CodecContextFactory factory) {
166 return new DataObjectCodecPrototype<>(augClass, NodeIdentifier.create(schema.statement().argument()), schema,
170 private static @NonNull NodeIdentifier createIdentifier(final CompositeRuntimeType type) {
171 final Object arg = type.statement().argument();
172 verify(arg instanceof QName, "Unexpected type %s argument %s", type, arg);
173 return NodeIdentifier.create((QName) arg);
176 final @NonNull T getType() {
180 final @NonNull ChildAddressabilitySummary getChildAddressabilitySummary() {
181 return childAddressabilitySummary;
184 final @NonNull QNameModule getNamespace() {
188 final @NonNull CodecContextFactory getFactory() {
192 final @NonNull Class<?> getBindingClass() {
193 return bindingArg.getType();
196 final @NonNull Item<?> getBindingArg() {
200 abstract @NonNull NodeIdentifier getYangArg();
203 public final DataContainerCodecContext<?, T> get() {
204 final var existing = (DataContainerCodecContext<?, T>) INSTANCE.getAcquire(this);
205 return existing != null ? existing : loadInstance();
208 @SuppressWarnings("unchecked")
209 final <R extends CompositeRuntimeType> DataObjectCodecContext<?, R> getDataObject() {
210 final var context = get();
211 verify(context instanceof DataObjectCodecContext, "Unexpected instance %s", context);
212 return (DataObjectCodecContext<?, R>) context;
215 private @NonNull DataContainerCodecContext<?, T> loadInstance() {
216 final var tmp = createInstance();
217 final var witness = (DataContainerCodecContext<?, T>) INSTANCE.compareAndExchangeRelease(this, null, tmp);
218 return witness == null ? tmp : witness;
221 // This method must allow concurrent loading, i.e. nothing in it may have effects outside of the loaded object
222 abstract @NonNull DataContainerCodecContext<?, T> createInstance();