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 com.google.gson.stream.JsonReader;
12 import java.io.IOException;
13 import java.io.InputStream;
14 import java.io.InputStreamReader;
15 import java.lang.annotation.Annotation;
16 import java.lang.reflect.Type;
17 import java.util.ArrayList;
18 import java.util.List;
19 import javax.ws.rs.Consumes;
20 import javax.ws.rs.WebApplicationException;
21 import javax.ws.rs.core.MediaType;
22 import javax.ws.rs.core.MultivaluedMap;
23 import javax.ws.rs.ext.MessageBodyReader;
24 import javax.ws.rs.ext.Provider;
25 import org.opendaylight.netconf.sal.rest.api.Draft02;
26 import org.opendaylight.netconf.sal.rest.api.RestconfService;
27 import org.opendaylight.netconf.sal.restconf.impl.ControllerContext;
28 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
29 import org.opendaylight.restconf.common.context.NormalizedNodeContext;
30 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
31 import org.opendaylight.restconf.common.errors.RestconfError.ErrorTag;
32 import org.opendaylight.restconf.common.errors.RestconfError.ErrorType;
33 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
34 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
35 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
36 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
37 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
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.gson.JsonParserStream;
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.ResultAlreadySetException;
45 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
46 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
47 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
48 import org.opendaylight.yangtools.yang.model.util.SchemaContextUtil;
49 import org.slf4j.Logger;
50 import org.slf4j.LoggerFactory;
53 @Consumes({ Draft02.MediaTypes.DATA + RestconfService.JSON, Draft02.MediaTypes.OPERATION + RestconfService.JSON,
54 MediaType.APPLICATION_JSON })
55 public class JsonNormalizedNodeBodyReader
56 extends AbstractIdentifierAwareJaxRsProvider implements MessageBodyReader<NormalizedNodeContext> {
58 private static final Logger LOG = LoggerFactory.getLogger(JsonNormalizedNodeBodyReader.class);
61 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
62 final MediaType mediaType) {
66 @SuppressWarnings("checkstyle:IllegalCatch")
68 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
69 final Annotation[] annotations, final MediaType mediaType,
70 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws IOException,
71 WebApplicationException {
73 return readFrom(getInstanceIdentifierContext(), entityStream, isPost());
74 } catch (final Exception e) {
75 propagateExceptionAs(e);
80 @SuppressWarnings("checkstyle:IllegalCatch")
81 public static NormalizedNodeContext readFrom(final String uriPath, final InputStream entityStream,
82 final boolean isPost) throws RestconfDocumentedException {
85 return readFrom(ControllerContext.getInstance().toInstanceIdentifier(uriPath), entityStream, isPost);
86 } catch (final Exception e) {
87 propagateExceptionAs(e);
92 private static NormalizedNodeContext readFrom(final InstanceIdentifierContext<?> path,
93 final InputStream entityStream, final boolean isPost)
95 if (entityStream.available() < 1) {
96 return new NormalizedNodeContext(path, null);
98 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
99 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
101 final SchemaNode parentSchema;
103 // FIXME: We need dispatch for RPC.
104 parentSchema = path.getSchemaNode();
105 } else if (path.getSchemaNode() instanceof SchemaContext) {
106 parentSchema = path.getSchemaContext();
108 if (SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
109 parentSchema = path.getSchemaContext();
111 parentSchema = SchemaContextUtil
112 .findDataSchemaNode(path.getSchemaContext(), path.getSchemaNode().getPath().getParent());
116 final JsonParserStream jsonParser = JsonParserStream.create(writer, path.getSchemaContext(), parentSchema);
117 final JsonReader reader = new JsonReader(new InputStreamReader(entityStream));
118 jsonParser.parse(reader);
120 NormalizedNode<?, ?> result = resultHolder.getResult();
121 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
122 InstanceIdentifierContext<? extends SchemaNode> newIIContext;
124 while (result instanceof AugmentationNode || result instanceof ChoiceNode) {
125 final Object childNode = ((DataContainerNode<?>) result).getValue().iterator().next();
127 iiToDataList.add(result.getIdentifier());
129 result = (NormalizedNode<?, ?>) childNode;
133 if (result instanceof MapEntryNode) {
134 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getNodeType()));
135 iiToDataList.add(result.getIdentifier());
137 iiToDataList.add(result.getIdentifier());
140 if (result instanceof MapNode) {
141 result = Iterables.getOnlyElement(((MapNode) result).getValue());
145 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
146 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
148 newIIContext = new InstanceIdentifierContext<>(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
149 path.getSchemaContext());
151 return new NormalizedNodeContext(newIIContext, result);
154 private static void propagateExceptionAs(final Exception exception) throws RestconfDocumentedException {
155 if (exception instanceof RestconfDocumentedException) {
156 throw (RestconfDocumentedException)exception;
159 if (exception instanceof ResultAlreadySetException) {
160 LOG.debug("Error parsing json input:", exception);
162 throw new RestconfDocumentedException("Error parsing json input: Failed to create new parse result data. "
163 + "Are you creating multiple resources/subresources in POST request?", exception);
166 LOG.debug("Error parsing json input", exception);
168 throw new RestconfDocumentedException("Error parsing input: " + exception.getMessage(), ErrorType.PROTOCOL,
169 ErrorTag.MALFORMED_MESSAGE, exception);