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 static com.google.common.base.Preconditions.checkState;
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.ArrayList;
18 import java.util.List;
19 import java.util.Optional;
20 import javax.ws.rs.Consumes;
21 import javax.ws.rs.WebApplicationException;
22 import javax.ws.rs.core.MediaType;
23 import javax.ws.rs.core.MultivaluedMap;
24 import javax.ws.rs.ext.MessageBodyReader;
25 import javax.ws.rs.ext.Provider;
26 import javax.xml.parsers.ParserConfigurationException;
27 import javax.xml.stream.XMLStreamException;
28 import javax.xml.transform.dom.DOMSource;
29 import org.opendaylight.netconf.sal.rest.api.Draft02;
30 import org.opendaylight.netconf.sal.rest.api.RestconfService;
31 import org.opendaylight.netconf.sal.restconf.impl.ControllerContext;
32 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
33 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
34 import org.opendaylight.restconf.common.util.RestUtil;
35 import org.opendaylight.yangtools.util.xml.UntrustedXML;
36 import org.opendaylight.yangtools.yang.common.ErrorTag;
37 import org.opendaylight.yangtools.yang.common.ErrorType;
38 import org.opendaylight.yangtools.yang.common.QName;
39 import org.opendaylight.yangtools.yang.common.XMLNamespace;
40 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
41 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
42 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
43 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
44 import org.opendaylight.yangtools.yang.data.codec.xml.XmlParserStream;
45 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
46 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
47 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
48 import org.opendaylight.yangtools.yang.model.api.ContainerLike;
49 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
50 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
51 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
52 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
53 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
54 import org.opendaylight.yangtools.yang.model.api.stmt.ListEffectiveStatement;
55 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.Inference;
56 import org.slf4j.Logger;
57 import org.slf4j.LoggerFactory;
58 import org.w3c.dom.Document;
59 import org.xml.sax.SAXException;
63 Draft02.MediaTypes.DATA + RestconfService.XML,
64 Draft02.MediaTypes.OPERATION + RestconfService.XML,
65 MediaType.APPLICATION_XML,
68 public class XmlNormalizedNodeBodyReader extends AbstractIdentifierAwareJaxRsProvider
69 implements MessageBodyReader<NormalizedNodeContext> {
71 private static final Logger LOG = LoggerFactory.getLogger(XmlNormalizedNodeBodyReader.class);
73 public XmlNormalizedNodeBodyReader(final ControllerContext controllerContext) {
74 super(controllerContext);
78 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
79 final MediaType mediaType) {
83 @SuppressWarnings("checkstyle:IllegalCatch")
85 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
86 final Annotation[] annotations, final MediaType mediaType,
87 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws
88 WebApplicationException {
90 return readFrom(entityStream);
91 } catch (final RestconfDocumentedException e) {
93 } catch (final Exception e) {
94 LOG.debug("Error parsing xml input", e);
95 RestconfDocumentedException.throwIfYangError(e);
96 throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
97 ErrorTag.MALFORMED_MESSAGE, e);
101 private NormalizedNodeContext readFrom(final InputStream entityStream) throws IOException, SAXException,
102 XMLStreamException, ParserConfigurationException, URISyntaxException {
103 final InstanceIdentifierContext path = getInstanceIdentifierContext();
104 final Optional<InputStream> nonEmptyInputStreamOptional = RestUtil.isInputStreamEmpty(entityStream);
105 if (nonEmptyInputStreamOptional.isEmpty()) {
106 // represent empty nopayload input
107 return new NormalizedNodeContext(path, null);
110 final Document doc = UntrustedXML.newDocumentBuilder().parse(nonEmptyInputStreamOptional.get());
111 return parse(path, doc);
114 private NormalizedNodeContext parse(final InstanceIdentifierContext pathContext,final Document doc)
115 throws XMLStreamException, IOException, SAXException, URISyntaxException {
116 final SchemaNode schemaNodeContext = pathContext.getSchemaNode();
117 DataSchemaNode schemaNode;
118 final List<PathArgument> iiToDataList = new ArrayList<>();
120 if (schemaNodeContext instanceof RpcDefinition) {
121 schemaNode = ((RpcDefinition) schemaNodeContext).getInput();
122 inference = pathContext.inference();
123 } else if (schemaNodeContext instanceof DataSchemaNode) {
124 schemaNode = (DataSchemaNode) schemaNodeContext;
126 final String docRootElm = doc.getDocumentElement().getLocalName();
127 final XMLNamespace docRootNamespace = XMLNamespace.of(doc.getDocumentElement().getNamespaceURI());
130 final var context = pathContext.getSchemaContext();
131 final var it = context.findModuleStatements(docRootNamespace).iterator();
132 checkState(it.hasNext(), "Failed to find module for %s", docRootNamespace);
133 final var qname = QName.create(it.next().localQNameModule(), docRootElm);
135 final var nodeAndStack = DataSchemaContextTree.from(context)
136 .enterPath(pathContext.getInstanceIdentifier()).orElseThrow();
138 final var stack = nodeAndStack.stack();
139 var current = nodeAndStack.node();
141 final var next = current.enterChild(stack, qname);
142 checkState(next != null, "Child \"%s\" was not found in parent schema node \"%s\"", qname,
144 iiToDataList.add(next.getIdentifier());
145 schemaNode = next.getDataSchemaNode();
147 } while (current.isMixin());
149 // We need to unwind the last identifier if it a NodeIdentifierWithPredicates, as it does not have
150 // any predicates at all. The real identifier is then added below
151 if (stack.currentStatement() instanceof ListEffectiveStatement) {
152 iiToDataList.remove(iiToDataList.size() - 1);
155 inference = stack.toInference();
159 final QName scQName = schemaNode.getQName();
160 checkState(docRootElm.equals(scQName.getLocalName()) && docRootNamespace.equals(scQName.getNamespace()),
161 "Not correct message root element \"%s\", should be \"%s\"", docRootElm, scQName);
162 inference = pathContext.inference();
165 throw new IllegalStateException("Unknown SchemaNode");
169 NormalizedNode parsed;
170 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
171 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
173 if (schemaNode instanceof ContainerLike || schemaNode instanceof ListSchemaNode
174 || schemaNode instanceof LeafSchemaNode) {
175 final XmlParserStream xmlParser = XmlParserStream.create(writer, inference);
176 xmlParser.traverse(new DOMSource(doc.getDocumentElement()));
177 parsed = resultHolder.getResult();
179 // When parsing an XML source with a list root node
180 // the new XML parser always returns a MapNode with one MapEntryNode inside.
181 // However, the old XML parser returned a MapEntryNode directly in this place.
182 // Therefore we now have to extract the MapEntryNode from the parsed MapNode.
183 if (parsed instanceof MapNode) {
184 final MapNode mapNode = (MapNode) parsed;
185 // extracting the MapEntryNode
186 parsed = mapNode.body().iterator().next();
189 if (schemaNode instanceof ListSchemaNode && isPost()) {
190 iiToDataList.add(parsed.getIdentifier());
193 LOG.warn("Unknown schema node extension {} was not parsed", schemaNode.getClass());
197 return new NormalizedNodeContext(pathContext.withConcatenatedArgs(iiToDataList), parsed);