2 * Copyright (c) 2016 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.restconf.nb.rfc8040.jersey.providers;
10 import com.google.common.base.Preconditions;
11 import com.google.common.collect.Iterables;
12 import java.io.IOException;
13 import java.io.InputStream;
14 import java.net.URISyntaxException;
15 import java.util.ArrayDeque;
16 import java.util.ArrayList;
17 import java.util.Collection;
18 import java.util.Deque;
19 import java.util.List;
20 import javax.ws.rs.Consumes;
21 import javax.ws.rs.WebApplicationException;
22 import javax.ws.rs.core.MediaType;
23 import javax.ws.rs.ext.Provider;
24 import javax.xml.parsers.ParserConfigurationException;
25 import javax.xml.stream.XMLStreamException;
26 import javax.xml.transform.dom.DOMSource;
27 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
28 import org.opendaylight.restconf.common.context.NormalizedNodeContext;
29 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
30 import org.opendaylight.restconf.common.errors.RestconfError.ErrorTag;
31 import org.opendaylight.restconf.common.errors.RestconfError.ErrorType;
32 import org.opendaylight.restconf.nb.rfc8040.Rfc8040;
33 import org.opendaylight.restconf.nb.rfc8040.jersey.providers.spi.AbstractNormalizedNodeBodyReader;
34 import org.opendaylight.restconf.nb.rfc8040.utils.RestconfConstants;
35 import org.opendaylight.yangtools.util.xml.UntrustedXML;
36 import org.opendaylight.yangtools.yang.common.QName;
37 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
38 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
39 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
40 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
41 import org.opendaylight.yangtools.yang.data.codec.xml.XmlParserStream;
42 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
43 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
44 import org.opendaylight.yangtools.yang.data.impl.schema.SchemaUtils;
45 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
46 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
47 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
48 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
49 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
50 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
51 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
52 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
53 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
54 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
55 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
56 import org.slf4j.Logger;
57 import org.slf4j.LoggerFactory;
58 import org.w3c.dom.Document;
59 import org.xml.sax.SAXException;
62 @Consumes({ Rfc8040.MediaTypes.DATA + RestconfConstants.XML, MediaType.APPLICATION_XML, MediaType.TEXT_XML })
63 public class XmlNormalizedNodeBodyReader extends AbstractNormalizedNodeBodyReader {
64 private static final Logger LOG = LoggerFactory.getLogger(XmlNormalizedNodeBodyReader.class);
66 @SuppressWarnings("checkstyle:IllegalCatch")
68 protected NormalizedNodeContext readBody(final InstanceIdentifierContext<?> path, final InputStream entityStream)
69 throws IOException, WebApplicationException {
71 final Document doc = UntrustedXML.newDocumentBuilder().parse(entityStream);
72 return parse(path,doc);
73 } catch (final RestconfDocumentedException e) {
75 } catch (final Exception e) {
76 LOG.debug("Error parsing xml input", e);
78 throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
79 ErrorTag.MALFORMED_MESSAGE, e);
83 private NormalizedNodeContext parse(final InstanceIdentifierContext<?> pathContext, final Document doc)
84 throws XMLStreamException, IOException, ParserConfigurationException, SAXException, URISyntaxException {
85 final SchemaNode schemaNodeContext = pathContext.getSchemaNode();
86 DataSchemaNode schemaNode;
87 boolean isRpc = false;
88 if (schemaNodeContext instanceof RpcDefinition) {
89 schemaNode = ((RpcDefinition) schemaNodeContext).getInput();
91 } else if (schemaNodeContext instanceof DataSchemaNode) {
92 schemaNode = (DataSchemaNode) schemaNodeContext;
94 throw new IllegalStateException("Unknown SchemaNode");
97 final String docRootElm = doc.getDocumentElement().getLocalName();
98 final String docRootNamespace = doc.getDocumentElement().getNamespaceURI();
99 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
101 if (isPost() && !isRpc) {
102 final Deque<Object> foundSchemaNodes = findPathToSchemaNodeByName(schemaNode, docRootElm, docRootNamespace);
103 if (foundSchemaNodes.isEmpty()) {
104 throw new IllegalStateException(String.format("Child \"%s\" was not found in parent schema node \"%s\"",
105 docRootElm, schemaNode.getQName()));
107 while (!foundSchemaNodes.isEmpty()) {
108 final Object child = foundSchemaNodes.pop();
109 if (child instanceof AugmentationSchemaNode) {
110 final AugmentationSchemaNode augmentSchemaNode = (AugmentationSchemaNode) child;
111 iiToDataList.add(SchemaUtils.getNodeIdentifierForAugmentation(augmentSchemaNode));
112 } else if (child instanceof DataSchemaNode) {
113 schemaNode = (DataSchemaNode) child;
114 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(schemaNode.getQName()));
119 final QName scQName = schemaNode.getQName();
120 Preconditions.checkState(
121 docRootElm.equals(scQName.getLocalName())
122 && docRootNamespace.equals(scQName.getNamespace().toASCIIString()),
123 String.format("Not correct message root element \"%s\", should be \"%s\"",
124 docRootElm, scQName));
127 NormalizedNode<?, ?> parsed;
128 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
129 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
131 if (schemaNode instanceof ContainerSchemaNode || schemaNode instanceof ListSchemaNode
132 || schemaNode instanceof LeafSchemaNode) {
133 final XmlParserStream xmlParser = XmlParserStream.create(writer, pathContext.getSchemaContext(),
135 xmlParser.traverse(new DOMSource(doc.getDocumentElement()));
136 parsed = resultHolder.getResult();
138 // When parsing an XML source with a list root node
139 // the new XML parser always returns a MapNode with one MapEntryNode inside.
140 // However, the old XML parser returned a MapEntryNode directly in this place.
141 // Therefore we now have to extract the MapEntryNode from the parsed MapNode.
142 if (parsed instanceof MapNode) {
143 final MapNode mapNode = (MapNode) parsed;
144 // extracting the MapEntryNode
145 parsed = mapNode.getValue().iterator().next();
148 if (schemaNode instanceof ListSchemaNode && isPost()) {
149 iiToDataList.add(parsed.getIdentifier());
152 LOG.warn("Unknown schema node extension {} was not parsed", schemaNode.getClass());
156 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
157 pathContext.getInstanceIdentifier().getPathArguments(), iiToDataList));
159 final InstanceIdentifierContext<? extends SchemaNode> outIIContext = new InstanceIdentifierContext<>(
160 fullIIToData, pathContext.getSchemaNode(), pathContext.getMountPoint(), pathContext.getSchemaContext());
162 return new NormalizedNodeContext(outIIContext, parsed);
165 private static Deque<Object> findPathToSchemaNodeByName(final DataSchemaNode schemaNode, final String elementName,
166 final String namespace) {
167 final Deque<Object> result = new ArrayDeque<>();
168 final ArrayList<ChoiceSchemaNode> choiceSchemaNodes = new ArrayList<>();
169 final Collection<DataSchemaNode> children = ((DataNodeContainer) schemaNode).getChildNodes();
170 for (final DataSchemaNode child : children) {
171 if (child instanceof ChoiceSchemaNode) {
172 choiceSchemaNodes.add((ChoiceSchemaNode) child);
173 } else if (child.getQName().getLocalName().equalsIgnoreCase(elementName)
174 && child.getQName().getNamespace().toString().equalsIgnoreCase(namespace)) {
175 // add child to result
179 if (child.isAugmenting()) {
180 final AugmentationSchemaNode augment = findCorrespondingAugment(schemaNode, child);
181 if (augment != null) {
182 result.push(augment);
191 for (final ChoiceSchemaNode choiceNode : choiceSchemaNodes) {
192 for (final CaseSchemaNode caseNode : choiceNode.getCases().values()) {
193 final Deque<Object> resultFromRecursion = findPathToSchemaNodeByName(caseNode, elementName, namespace);
194 if (!resultFromRecursion.isEmpty()) {
195 resultFromRecursion.push(choiceNode);
196 if (choiceNode.isAugmenting()) {
197 final AugmentationSchemaNode augment = findCorrespondingAugment(schemaNode, choiceNode);
198 if (augment != null) {
199 resultFromRecursion.push(augment);
202 return resultFromRecursion;
209 private static AugmentationSchemaNode findCorrespondingAugment(final DataSchemaNode parent,
210 final DataSchemaNode child) {
211 if (parent instanceof AugmentationTarget && !(parent instanceof ChoiceSchemaNode)) {
212 for (final AugmentationSchemaNode augmentation
213 : ((AugmentationTarget) parent).getAvailableAugmentations()) {
214 final DataSchemaNode childInAugmentation = augmentation.getDataChildByName(child.getQName());
215 if (childInAugmentation != null) {