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 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 org.opendaylight.netconf.sal.rest.api.Draft02;
27 import org.opendaylight.netconf.sal.rest.api.RestconfService;
28 import org.opendaylight.netconf.sal.restconf.impl.ControllerContext;
29 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
30 import org.opendaylight.restconf.common.context.NormalizedNodeContext;
31 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
32 import org.opendaylight.restconf.common.errors.RestconfError.ErrorTag;
33 import org.opendaylight.restconf.common.errors.RestconfError.ErrorType;
34 import org.opendaylight.restconf.common.util.RestUtil;
35 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
36 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
37 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
38 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
39 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
40 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
41 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
42 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
43 import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream;
44 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
45 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
46 import org.opendaylight.yangtools.yang.data.impl.schema.ResultAlreadySetException;
47 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
48 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
49 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
50 import org.opendaylight.yangtools.yang.model.util.SchemaContextUtil;
51 import org.slf4j.Logger;
52 import org.slf4j.LoggerFactory;
55 @Consumes({ Draft02.MediaTypes.DATA + RestconfService.JSON, Draft02.MediaTypes.OPERATION + RestconfService.JSON,
56 MediaType.APPLICATION_JSON })
57 public class JsonNormalizedNodeBodyReader
58 extends AbstractIdentifierAwareJaxRsProvider implements MessageBodyReader<NormalizedNodeContext> {
60 private static final Logger LOG = LoggerFactory.getLogger(JsonNormalizedNodeBodyReader.class);
63 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
64 final MediaType mediaType) {
68 @SuppressWarnings("checkstyle:IllegalCatch")
70 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
71 final Annotation[] annotations, final MediaType mediaType,
72 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws IOException,
73 WebApplicationException {
75 return readFrom(getInstanceIdentifierContext(), entityStream, isPost());
76 } catch (final Exception e) {
77 propagateExceptionAs(e);
82 @SuppressWarnings("checkstyle:IllegalCatch")
83 public static NormalizedNodeContext readFrom(final String uriPath, final InputStream entityStream,
84 final boolean isPost) throws RestconfDocumentedException {
87 return readFrom(ControllerContext.getInstance().toInstanceIdentifier(uriPath), entityStream, isPost);
88 } catch (final Exception e) {
89 propagateExceptionAs(e);
94 private static NormalizedNodeContext readFrom(final InstanceIdentifierContext<?> path,
95 final InputStream entityStream, final boolean isPost)
97 final Optional<InputStream> nonEmptyInputStreamOptional = RestUtil.isInputStreamEmpty(entityStream);
98 if (!nonEmptyInputStreamOptional.isPresent()) {
99 return new NormalizedNodeContext(path, null);
101 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
102 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
104 final SchemaNode parentSchema;
106 // FIXME: We need dispatch for RPC.
107 parentSchema = path.getSchemaNode();
108 } else if (path.getSchemaNode() instanceof SchemaContext) {
109 parentSchema = path.getSchemaContext();
111 if (SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
112 parentSchema = path.getSchemaContext();
114 parentSchema = SchemaContextUtil
115 .findDataSchemaNode(path.getSchemaContext(), path.getSchemaNode().getPath().getParent());
119 final JsonParserStream jsonParser = JsonParserStream.create(writer, path.getSchemaContext(), parentSchema);
120 final JsonReader reader = new JsonReader(new InputStreamReader(nonEmptyInputStreamOptional.get()));
121 jsonParser.parse(reader);
123 NormalizedNode<?, ?> result = resultHolder.getResult();
124 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
125 InstanceIdentifierContext<? extends SchemaNode> newIIContext;
127 while (result instanceof AugmentationNode || result instanceof ChoiceNode) {
128 final Object childNode = ((DataContainerNode<?>) result).getValue().iterator().next();
130 iiToDataList.add(result.getIdentifier());
132 result = (NormalizedNode<?, ?>) childNode;
136 if (result instanceof MapEntryNode) {
137 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getNodeType()));
138 iiToDataList.add(result.getIdentifier());
140 iiToDataList.add(result.getIdentifier());
143 if (result instanceof MapNode) {
144 result = Iterables.getOnlyElement(((MapNode) result).getValue());
148 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
149 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
151 newIIContext = new InstanceIdentifierContext<>(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
152 path.getSchemaContext());
154 return new NormalizedNodeContext(newIIContext, result);
157 private static void propagateExceptionAs(final Exception exception) throws RestconfDocumentedException {
158 if (exception instanceof RestconfDocumentedException) {
159 throw (RestconfDocumentedException)exception;
162 if (exception instanceof ResultAlreadySetException) {
163 LOG.debug("Error parsing json input:", exception);
165 throw new RestconfDocumentedException("Error parsing json input: Failed to create new parse result data. "
166 + "Are you creating multiple resources/subresources in POST request?", exception);
169 LOG.debug("Error parsing json input", exception);
171 throw new RestconfDocumentedException("Error parsing input: " + exception.getMessage(), ErrorType.PROTOCOL,
172 ErrorTag.MALFORMED_MESSAGE, exception);