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.collect.Iterables;
11 import java.io.IOException;
12 import java.io.InputStream;
13 import java.lang.annotation.Annotation;
14 import java.lang.reflect.Type;
15 import java.util.ArrayDeque;
16 import java.util.ArrayList;
17 import java.util.Collection;
18 import java.util.Collections;
19 import java.util.Deque;
20 import java.util.List;
21 import javax.ws.rs.Consumes;
22 import javax.ws.rs.WebApplicationException;
23 import javax.ws.rs.core.MediaType;
24 import javax.ws.rs.core.MultivaluedMap;
25 import javax.ws.rs.ext.MessageBodyReader;
26 import javax.ws.rs.ext.Provider;
27 import javax.xml.parsers.DocumentBuilder;
28 import javax.xml.parsers.DocumentBuilderFactory;
29 import javax.xml.parsers.ParserConfigurationException;
30 import org.opendaylight.netconf.sal.rest.api.Draft02;
31 import org.opendaylight.netconf.sal.rest.api.RestconfService;
32 import org.opendaylight.netconf.sal.restconf.impl.InstanceIdentifierContext;
33 import org.opendaylight.netconf.sal.restconf.impl.NormalizedNodeContext;
34 import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
35 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
36 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorType;
37 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
38 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
39 import org.opendaylight.yangtools.yang.data.impl.codec.xml.XmlUtils;
40 import org.opendaylight.yangtools.yang.data.impl.schema.SchemaUtils;
41 import org.opendaylight.yangtools.yang.data.impl.schema.transform.dom.parser.DomToNormalizedNodeParserFactory;
42 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
43 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
44 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
45 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
46 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
47 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
48 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
49 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
50 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
51 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
52 import org.slf4j.Logger;
53 import org.slf4j.LoggerFactory;
54 import org.w3c.dom.Document;
55 import org.w3c.dom.Element;
56 import org.xml.sax.SAXException;
59 @Consumes({ Draft02.MediaTypes.DATA + RestconfService.XML, Draft02.MediaTypes.OPERATION + RestconfService.XML,
60 MediaType.APPLICATION_XML, MediaType.TEXT_XML })
61 public class XmlNormalizedNodeBodyReader extends AbstractIdentifierAwareJaxRsProvider implements MessageBodyReader<NormalizedNodeContext> {
63 private final static Logger LOG = LoggerFactory.getLogger(XmlNormalizedNodeBodyReader.class);
64 private static final DocumentBuilderFactory BUILDERFACTORY;
67 final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
69 factory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
70 factory.setFeature("http://xml.org/sax/features/external-general-entities", false);
71 factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
72 factory.setXIncludeAware(false);
73 factory.setExpandEntityReferences(false);
74 } catch (final ParserConfigurationException e) {
75 throw new ExceptionInInitializerError(e);
77 factory.setNamespaceAware(true);
78 factory.setCoalescing(true);
79 factory.setIgnoringElementContentWhitespace(true);
80 factory.setIgnoringComments(true);
81 BUILDERFACTORY = factory;
85 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
86 final MediaType mediaType) {
91 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
92 final Annotation[] annotations, final MediaType mediaType,
93 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws IOException,
94 WebApplicationException {
96 if (getUriInfo().getAbsolutePath().getPath().contains("restconf/16")) {
97 final org.opendaylight.restconf.jersey.providers.XmlNormalizedNodeBodyReader xmlReaderNewRest =
98 new org.opendaylight.restconf.jersey.providers.XmlNormalizedNodeBodyReader();
99 xmlReaderNewRest.injectParams(getUriInfo(), getRequest());
100 return xmlReaderNewRest.readFrom(type, genericType, annotations, mediaType, httpHeaders, entityStream);
102 return readFrom(entityStream);
104 } catch (final RestconfDocumentedException e){
106 } catch (final Exception e) {
107 LOG.debug("Error parsing xml input", e);
109 throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
110 ErrorTag.MALFORMED_MESSAGE);
114 private NormalizedNodeContext readFrom(final InputStream entityStream) throws IOException, SAXException {
115 final InstanceIdentifierContext<?> path = getInstanceIdentifierContext();
117 if (entityStream.available() < 1) {
118 // represent empty nopayload input
119 return new NormalizedNodeContext(path, null);
122 final DocumentBuilder dBuilder;
124 dBuilder = BUILDERFACTORY.newDocumentBuilder();
125 } catch (final ParserConfigurationException e) {
126 throw new RuntimeException("Failed to parse XML document", e);
128 final Document doc = dBuilder.parse(entityStream);
130 return parse(path,doc);
133 private NormalizedNodeContext parse(final InstanceIdentifierContext<?> pathContext,final Document doc) {
135 final List<Element> elements = Collections.singletonList(doc.getDocumentElement());
136 final SchemaNode schemaNodeContext = pathContext.getSchemaNode();
137 DataSchemaNode schemaNode;
138 boolean isRpc = false;
139 if (schemaNodeContext instanceof RpcDefinition) {
140 schemaNode = ((RpcDefinition) schemaNodeContext).getInput();
142 } else if (schemaNodeContext instanceof DataSchemaNode) {
143 schemaNode = (DataSchemaNode) schemaNodeContext;
145 throw new IllegalStateException("Unknown SchemaNode");
148 final String docRootElm = doc.getDocumentElement().getLocalName();
149 final String docRootNamespace = doc.getDocumentElement().getNamespaceURI();
150 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
151 InstanceIdentifierContext<? extends SchemaNode> outIIContext;
154 // FIXME the factory instance should be cached if the schema context is the same
155 final DomToNormalizedNodeParserFactory parserFactory =
156 DomToNormalizedNodeParserFactory.getInstance(XmlUtils.DEFAULT_XML_CODEC_PROVIDER, pathContext.getSchemaContext());
158 if (isPost() && !isRpc) {
159 final Deque<Object> foundSchemaNodes = findPathToSchemaNodeByName(schemaNode, docRootElm, docRootNamespace);
160 if (foundSchemaNodes.isEmpty()) {
161 throw new IllegalStateException(String.format("Child \"%s\" was not found in parent schema node \"%s\"",
162 docRootElm, schemaNode.getQName()));
164 while (!foundSchemaNodes.isEmpty()) {
165 final Object child = foundSchemaNodes.pop();
166 if (child instanceof AugmentationSchema) {
167 final AugmentationSchema augmentSchemaNode = (AugmentationSchema) child;
168 iiToDataList.add(SchemaUtils.getNodeIdentifierForAugmentation(augmentSchemaNode));
169 } else if (child instanceof DataSchemaNode) {
170 schemaNode = (DataSchemaNode) child;
171 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(schemaNode.getQName()));
176 NormalizedNode<?, ?> parsed = null;
178 if (schemaNode instanceof ContainerSchemaNode) {
179 parsed = parserFactory.getContainerNodeParser().parse(Collections.singletonList(doc.getDocumentElement()), (ContainerSchemaNode) schemaNode);
180 } else if(schemaNode instanceof ListSchemaNode) {
181 final ListSchemaNode casted = (ListSchemaNode) schemaNode;
182 parsed = parserFactory.getMapEntryNodeParser().parse(elements, casted);
184 iiToDataList.add(parsed.getIdentifier());
187 // FIXME : add another DataSchemaNode extensions e.g. LeafSchemaNode
189 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
190 pathContext.getInstanceIdentifier().getPathArguments(), iiToDataList));
192 outIIContext = new InstanceIdentifierContext<>(fullIIToData, pathContext.getSchemaNode(), pathContext.getMountPoint(),
193 pathContext.getSchemaContext());
195 return new NormalizedNodeContext(outIIContext, parsed);
198 private static Deque<Object> findPathToSchemaNodeByName(final DataSchemaNode schemaNode, final String elementName,
199 final String namespace) {
200 final Deque<Object> result = new ArrayDeque<>();
201 final ArrayList<ChoiceSchemaNode> choiceSchemaNodes = new ArrayList<>();
202 final Collection<DataSchemaNode> children = ((DataNodeContainer) schemaNode).getChildNodes();
203 for (final DataSchemaNode child : children) {
204 if (child instanceof ChoiceSchemaNode) {
205 choiceSchemaNodes.add((ChoiceSchemaNode) child);
206 } else if (child.getQName().getLocalName().equalsIgnoreCase(elementName)
207 && child.getQName().getNamespace().toString().equalsIgnoreCase(namespace)) {
208 // add child to result
212 if (child.isAugmenting()) {
213 final AugmentationSchema augment = findCorrespondingAugment(schemaNode, child);
214 if (augment != null) {
215 result.push(augment);
224 for (final ChoiceSchemaNode choiceNode : choiceSchemaNodes) {
225 for (final ChoiceCaseNode caseNode : choiceNode.getCases()) {
226 final Deque<Object> resultFromRecursion = findPathToSchemaNodeByName(caseNode, elementName, namespace);
227 if (!resultFromRecursion.isEmpty()) {
228 resultFromRecursion.push(choiceNode);
229 if (choiceNode.isAugmenting()) {
230 final AugmentationSchema augment = findCorrespondingAugment(schemaNode, choiceNode);
231 if (augment != null) {
232 resultFromRecursion.push(augment);
235 return resultFromRecursion;
242 private static AugmentationSchema findCorrespondingAugment(final DataSchemaNode parent, final DataSchemaNode child) {
243 if ((parent instanceof AugmentationTarget) && !(parent instanceof ChoiceSchemaNode)) {
244 for (final AugmentationSchema augmentation : ((AugmentationTarget) parent).getAvailableAugmentations()) {
245 final DataSchemaNode childInAugmentation = augmentation.getDataChildByName(child.getQName());
246 if (childInAugmentation != null) {