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.controller.sal.rest.impl;
10 import java.io.IOException;
11 import java.io.InputStream;
12 import java.lang.annotation.Annotation;
13 import java.lang.reflect.Type;
14 import java.util.ArrayList;
15 import java.util.Collection;
16 import java.util.Collections;
17 import java.util.List;
18 import javax.ws.rs.Consumes;
19 import javax.ws.rs.WebApplicationException;
20 import javax.ws.rs.core.MediaType;
21 import javax.ws.rs.core.MultivaluedMap;
22 import javax.ws.rs.ext.MessageBodyReader;
23 import javax.ws.rs.ext.Provider;
24 import javax.xml.parsers.DocumentBuilder;
25 import javax.xml.parsers.DocumentBuilderFactory;
26 import javax.xml.parsers.ParserConfigurationException;
27 import org.opendaylight.controller.sal.rest.api.Draft02;
28 import org.opendaylight.controller.sal.rest.api.RestconfService;
29 import org.opendaylight.controller.sal.restconf.impl.InstanceIdentifierContext;
30 import org.opendaylight.controller.sal.restconf.impl.NormalizedNodeContext;
31 import org.opendaylight.controller.sal.restconf.impl.RestconfDocumentedException;
32 import org.opendaylight.controller.sal.restconf.impl.RestconfError.ErrorTag;
33 import org.opendaylight.controller.sal.restconf.impl.RestconfError.ErrorType;
34 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
35 import org.opendaylight.yangtools.yang.data.impl.codec.xml.XmlUtils;
36 import org.opendaylight.yangtools.yang.data.impl.schema.transform.dom.parser.DomToNormalizedNodeParserFactory;
37 import org.opendaylight.yangtools.yang.model.api.ChoiceCaseNode;
38 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
39 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
40 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
41 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
42 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
43 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
44 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
47 import org.w3c.dom.Document;
48 import org.w3c.dom.Element;
51 @Consumes({ Draft02.MediaTypes.DATA + RestconfService.XML, Draft02.MediaTypes.OPERATION + RestconfService.XML,
52 MediaType.APPLICATION_XML, MediaType.TEXT_XML })
53 public class XmlNormalizedNodeBodyReader extends AbstractIdentifierAwareJaxRsProvider implements MessageBodyReader<NormalizedNodeContext> {
55 private final static Logger LOG = LoggerFactory.getLogger(XmlNormalizedNodeBodyReader.class);
56 private static final DocumentBuilderFactory BUILDERFACTORY;
59 final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
61 factory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
62 factory.setFeature("http://xml.org/sax/features/external-general-entities", false);
63 factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
64 factory.setXIncludeAware(false);
65 factory.setExpandEntityReferences(false);
66 } catch (final ParserConfigurationException e) {
67 throw new ExceptionInInitializerError(e);
69 factory.setNamespaceAware(true);
70 factory.setCoalescing(true);
71 factory.setIgnoringElementContentWhitespace(true);
72 factory.setIgnoringComments(true);
73 BUILDERFACTORY = factory;
77 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
78 final MediaType mediaType) {
83 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
84 final Annotation[] annotations, final MediaType mediaType,
85 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws IOException,
86 WebApplicationException {
88 final InstanceIdentifierContext<?> path = getInstanceIdentifierContext();
90 if (entityStream.available() < 1) {
91 // represent empty nopayload input
92 return new NormalizedNodeContext(path, null);
95 final DocumentBuilder dBuilder;
97 dBuilder = BUILDERFACTORY.newDocumentBuilder();
98 } catch (final ParserConfigurationException e) {
99 throw new RuntimeException("Failed to parse XML document", e);
101 final Document doc = dBuilder.parse(entityStream);
103 final NormalizedNode<?, ?> result = parse(path,doc);
104 return new NormalizedNodeContext(path,result);
105 } catch (final Exception e) {
106 LOG.debug("Error parsing xml input", e);
108 throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
109 ErrorTag.MALFORMED_MESSAGE);
113 private static NormalizedNode<?,?> parse(final InstanceIdentifierContext<?> pathContext,final Document doc) {
115 final List<Element> elements = Collections.singletonList(doc.getDocumentElement());
116 final SchemaNode schemaNodeContext = pathContext.getSchemaNode();
117 DataSchemaNode schemaNode;
118 if (schemaNodeContext instanceof RpcDefinition) {
119 schemaNode = ((RpcDefinition) schemaNodeContext).getInput();
120 } else if (schemaNodeContext instanceof DataSchemaNode) {
121 schemaNode = (DataSchemaNode) schemaNodeContext;
123 throw new IllegalStateException("Unknow SchemaNode");
126 final String docRootElm = doc.getDocumentElement().getLocalName();
127 final String schemaNodeName = pathContext.getSchemaNode().getQName().getLocalName();
129 if (!schemaNodeName.equalsIgnoreCase(docRootElm)) {
130 final DataSchemaNode foundSchemaNode = findSchemaNodeOrParentChoiceByName(schemaNode, docRootElm);
131 if (foundSchemaNode != null) {
132 schemaNode = foundSchemaNode;
136 // FIXME the factory instance should be cached if the schema context is the same
137 final DomToNormalizedNodeParserFactory parserFactory =
138 DomToNormalizedNodeParserFactory.getInstance(XmlUtils.DEFAULT_XML_CODEC_PROVIDER, pathContext.getSchemaContext());
140 NormalizedNode<?, ?> parsed = null;
141 if(schemaNode instanceof ContainerSchemaNode) {
142 return parserFactory.getContainerNodeParser().parse(Collections.singletonList(doc.getDocumentElement()), (ContainerSchemaNode) schemaNode);
143 } else if(schemaNode instanceof ListSchemaNode) {
144 final ListSchemaNode casted = (ListSchemaNode) schemaNode;
145 return parserFactory.getMapEntryNodeParser().parse(elements, casted);
146 } else if (schemaNode instanceof ChoiceSchemaNode) {
147 final ChoiceSchemaNode casted = (ChoiceSchemaNode) schemaNode;
148 return parserFactory.getChoiceNodeParser().parse(elements, casted);
151 // FIXME : add another DataSchemaNode extensions e.g. LeafSchemaNode
156 private static DataSchemaNode findSchemaNodeOrParentChoiceByName(DataSchemaNode schemaNode, String elementName) {
157 final ArrayList<ChoiceSchemaNode> choiceSchemaNodes = new ArrayList<>();
158 final Collection<DataSchemaNode> children = ((DataNodeContainer) schemaNode).getChildNodes();
159 for (final DataSchemaNode child : children) {
160 if (child instanceof ChoiceSchemaNode) {
161 choiceSchemaNodes.add((ChoiceSchemaNode) child);
162 } else if (child.getQName().getLocalName().equalsIgnoreCase(elementName)) {
167 for (final ChoiceSchemaNode choiceNode : choiceSchemaNodes) {
168 for (final ChoiceCaseNode caseNode : choiceNode.getCases()) {
169 final DataSchemaNode resultFromRecursion = findSchemaNodeOrParentChoiceByName(caseNode, elementName);
170 if (resultFromRecursion != null) {
171 // this returns top choice node in which child element is found