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.netconf.sal.rest.impl;
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.lang.annotation.Annotation;
15 import java.lang.reflect.Type;
16 import java.net.URISyntaxException;
17 import java.util.ArrayDeque;
18 import java.util.ArrayList;
19 import java.util.Collection;
20 import java.util.Deque;
21 import java.util.List;
22 import javax.ws.rs.Consumes;
23 import javax.ws.rs.WebApplicationException;
24 import javax.ws.rs.core.MediaType;
25 import javax.ws.rs.core.MultivaluedMap;
26 import javax.ws.rs.ext.MessageBodyReader;
27 import javax.ws.rs.ext.Provider;
28 import javax.xml.parsers.ParserConfigurationException;
29 import javax.xml.stream.XMLStreamException;
30 import javax.xml.transform.dom.DOMSource;
31 import org.opendaylight.netconf.sal.rest.api.Draft02;
32 import org.opendaylight.netconf.sal.rest.api.RestconfService;
33 import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
34 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
35 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorType;
36 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
37 import org.opendaylight.restconf.common.context.NormalizedNodeContext;
38 import org.opendaylight.restconf.utils.RestconfConstants;
39 import org.opendaylight.yangtools.util.xml.UntrustedXML;
40 import org.opendaylight.yangtools.yang.common.QName;
41 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
42 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
43 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
44 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
45 import org.opendaylight.yangtools.yang.data.codec.xml.XmlParserStream;
46 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
47 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
48 import org.opendaylight.yangtools.yang.data.impl.schema.SchemaUtils;
49 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
50 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
51 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
52 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
53 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
54 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
55 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
56 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
57 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
58 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
59 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
60 import org.slf4j.Logger;
61 import org.slf4j.LoggerFactory;
62 import org.w3c.dom.Document;
63 import org.xml.sax.SAXException;
66 @Consumes({ Draft02.MediaTypes.DATA + RestconfService.XML, Draft02.MediaTypes.OPERATION + RestconfService.XML,
67 MediaType.APPLICATION_XML, MediaType.TEXT_XML })
68 public class XmlNormalizedNodeBodyReader extends AbstractIdentifierAwareJaxRsProvider
69 implements MessageBodyReader<NormalizedNodeContext> {
71 private static final Logger LOG = LoggerFactory.getLogger(XmlNormalizedNodeBodyReader.class);
74 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
75 final MediaType mediaType) {
79 @SuppressWarnings("checkstyle:IllegalCatch")
81 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
82 final Annotation[] annotations, final MediaType mediaType,
83 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws IOException,
84 WebApplicationException {
86 if (getUriInfo().getAbsolutePath().getPath().contains(RestconfConstants.DRAFT_PATTERN)) {
87 final org.opendaylight.restconf.jersey.providers.XmlNormalizedNodeBodyReader xmlReaderNewRest =
88 new org.opendaylight.restconf.jersey.providers.XmlNormalizedNodeBodyReader();
89 xmlReaderNewRest.injectParams(getUriInfo(), getRequest());
90 return xmlReaderNewRest.readFrom(type, genericType, annotations, mediaType, httpHeaders, entityStream);
92 return readFrom(entityStream);
94 } catch (final RestconfDocumentedException e) {
96 } catch (final Exception e) {
97 LOG.debug("Error parsing xml input", e);
99 throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
100 ErrorTag.MALFORMED_MESSAGE, e);
104 private NormalizedNodeContext readFrom(final InputStream entityStream) throws IOException, SAXException,
105 XMLStreamException, ParserConfigurationException, URISyntaxException {
106 final InstanceIdentifierContext<?> path = getInstanceIdentifierContext();
108 if (entityStream.available() < 1) {
109 // represent empty nopayload input
110 return new NormalizedNodeContext(path, null);
113 final Document doc = UntrustedXML.newDocumentBuilder().parse(entityStream);
114 return parse(path, doc);
117 private NormalizedNodeContext parse(final InstanceIdentifierContext<?> pathContext,final Document doc)
118 throws XMLStreamException, IOException, ParserConfigurationException, SAXException, URISyntaxException {
119 final SchemaNode schemaNodeContext = pathContext.getSchemaNode();
120 DataSchemaNode schemaNode;
121 boolean isRpc = false;
122 if (schemaNodeContext instanceof RpcDefinition) {
123 schemaNode = ((RpcDefinition) schemaNodeContext).getInput();
125 } else if (schemaNodeContext instanceof DataSchemaNode) {
126 schemaNode = (DataSchemaNode) schemaNodeContext;
128 throw new IllegalStateException("Unknown SchemaNode");
131 final String docRootElm = doc.getDocumentElement().getLocalName();
132 final String docRootNamespace = doc.getDocumentElement().getNamespaceURI();
133 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
135 if (isPost() && !isRpc) {
136 final Deque<Object> foundSchemaNodes = findPathToSchemaNodeByName(schemaNode, docRootElm, docRootNamespace);
137 if (foundSchemaNodes.isEmpty()) {
138 throw new IllegalStateException(String.format("Child \"%s\" was not found in parent schema node \"%s\"",
139 docRootElm, schemaNode.getQName()));
141 while (!foundSchemaNodes.isEmpty()) {
142 final Object child = foundSchemaNodes.pop();
143 if (child instanceof AugmentationSchema) {
144 final AugmentationSchema augmentSchemaNode = (AugmentationSchema) child;
145 iiToDataList.add(SchemaUtils.getNodeIdentifierForAugmentation(augmentSchemaNode));
146 } else if (child instanceof DataSchemaNode) {
147 schemaNode = (DataSchemaNode) child;
148 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(schemaNode.getQName()));
153 final QName scQName = schemaNode.getQName();
154 Preconditions.checkState(
155 docRootElm.equals(scQName.getLocalName())
156 && docRootNamespace.equals(scQName.getNamespace().toASCIIString()),
157 String.format("Not correct message root element \"%s\", should be \"%s\"",
158 docRootElm, scQName));
161 NormalizedNode<?, ?> parsed;
162 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
163 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
165 if (schemaNode instanceof ContainerSchemaNode || schemaNode instanceof ListSchemaNode
166 || schemaNode instanceof LeafSchemaNode) {
167 final XmlParserStream xmlParser = XmlParserStream.create(writer, pathContext.getSchemaContext(),
169 xmlParser.traverse(new DOMSource(doc.getDocumentElement()));
170 parsed = resultHolder.getResult();
172 // When parsing an XML source with a list root node
173 // the new XML parser always returns a MapNode with one MapEntryNode inside.
174 // However, the old XML parser returned a MapEntryNode directly in this place.
175 // Therefore we now have to extract the MapEntryNode from the parsed MapNode.
176 if (parsed instanceof MapNode) {
177 final MapNode mapNode = (MapNode) parsed;
178 // extracting the MapEntryNode
179 parsed = mapNode.getValue().iterator().next();
182 if (schemaNode instanceof ListSchemaNode && isPost()) {
183 iiToDataList.add(parsed.getIdentifier());
186 LOG.warn("Unknown schema node extension {} was not parsed", schemaNode.getClass());
190 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
191 pathContext.getInstanceIdentifier().getPathArguments(), iiToDataList));
193 final InstanceIdentifierContext<? extends SchemaNode> outIIContext = new InstanceIdentifierContext<>(
194 fullIIToData, pathContext.getSchemaNode(), pathContext.getMountPoint(), pathContext.getSchemaContext());
196 return new NormalizedNodeContext(outIIContext, parsed);
199 private static Deque<Object> findPathToSchemaNodeByName(final DataSchemaNode schemaNode, final String elementName,
200 final String namespace) {
201 final Deque<Object> result = new ArrayDeque<>();
202 final ArrayList<ChoiceSchemaNode> choiceSchemaNodes = new ArrayList<>();
203 final Collection<DataSchemaNode> children = ((DataNodeContainer) schemaNode).getChildNodes();
204 for (final DataSchemaNode child : children) {
205 if (child instanceof ChoiceSchemaNode) {
206 choiceSchemaNodes.add((ChoiceSchemaNode) child);
207 } else if (child.getQName().getLocalName().equalsIgnoreCase(elementName)
208 && child.getQName().getNamespace().toString().equalsIgnoreCase(namespace)) {
209 // add child to result
213 if (child.isAugmenting()) {
214 final AugmentationSchema augment = findCorrespondingAugment(schemaNode, child);
215 if (augment != null) {
216 result.push(augment);
225 for (final ChoiceSchemaNode choiceNode : choiceSchemaNodes) {
226 for (final ChoiceCaseNode caseNode : choiceNode.getCases()) {
227 final Deque<Object> resultFromRecursion = findPathToSchemaNodeByName(caseNode, elementName, namespace);
228 if (!resultFromRecursion.isEmpty()) {
229 resultFromRecursion.push(choiceNode);
230 if (choiceNode.isAugmenting()) {
231 final AugmentationSchema augment = findCorrespondingAugment(schemaNode, choiceNode);
232 if (augment != null) {
233 resultFromRecursion.push(augment);
236 return resultFromRecursion;
243 private static AugmentationSchema findCorrespondingAugment(final DataSchemaNode parent,
244 final DataSchemaNode child) {
245 if ((parent instanceof AugmentationTarget) && !(parent instanceof ChoiceSchemaNode)) {
246 for (final AugmentationSchema augmentation : ((AugmentationTarget) parent).getAvailableAugmentations()) {
247 final DataSchemaNode childInAugmentation = augmentation.getDataChildByName(child.getQName());
248 if (childInAugmentation != null) {