2 * Copyright (c) 2016 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.restconf.jersey.providers;
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.core.Request;
24 import javax.ws.rs.core.UriInfo;
25 import javax.ws.rs.ext.MessageBodyReader;
26 import javax.ws.rs.ext.Provider;
27 import org.opendaylight.netconf.sal.restconf.impl.InstanceIdentifierContext;
28 import org.opendaylight.netconf.sal.restconf.impl.NormalizedNodeContext;
29 import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
30 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
31 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorType;
32 import org.opendaylight.restconf.Rfc8040;
33 import org.opendaylight.restconf.utils.RestconfConstants;
34 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
35 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
36 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
37 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
38 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
39 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
40 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
41 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
42 import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream;
43 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
44 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
45 import org.opendaylight.yangtools.yang.data.impl.schema.ResultAlreadySetException;
46 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
47 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
48 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
49 import org.opendaylight.yangtools.yang.model.util.SchemaContextUtil;
50 import org.slf4j.Logger;
51 import org.slf4j.LoggerFactory;
54 @Consumes({ Rfc8040.MediaTypes.DATA + RestconfConstants.JSON, MediaType.APPLICATION_JSON })
55 public class JsonNormalizedNodeBodyReader extends AbstractIdentifierAwareJaxRsProvider
56 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 private static NormalizedNodeContext readFrom(
81 final InstanceIdentifierContext<?> path, final InputStream entityStream, final boolean isPost)
83 if (entityStream.available() < 1) {
84 return new NormalizedNodeContext(path, null);
86 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
87 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
89 final SchemaNode parentSchema;
91 parentSchema = path.getSchemaNode();
92 } else if (path.getSchemaNode() instanceof SchemaContext) {
93 parentSchema = path.getSchemaContext();
95 if (SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
96 parentSchema = path.getSchemaContext();
98 parentSchema = SchemaContextUtil
99 .findDataSchemaNode(path.getSchemaContext(), path.getSchemaNode().getPath().getParent());
103 final JsonParserStream jsonParser = JsonParserStream.create(writer, path.getSchemaContext(), parentSchema);
104 final JsonReader reader = new JsonReader(new InputStreamReader(entityStream));
105 jsonParser.parse(reader);
107 NormalizedNode<?, ?> result = resultHolder.getResult();
108 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
109 InstanceIdentifierContext<? extends SchemaNode> newIIContext;
111 while (result instanceof AugmentationNode || result instanceof ChoiceNode) {
112 final Object childNode = ((DataContainerNode<?>) result).getValue().iterator().next();
114 iiToDataList.add(result.getIdentifier());
116 result = (NormalizedNode<?, ?>) childNode;
120 if (result instanceof MapEntryNode) {
121 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getNodeType()));
122 iiToDataList.add(result.getIdentifier());
124 iiToDataList.add(result.getIdentifier());
127 if (result instanceof MapNode) {
128 result = Iterables.getOnlyElement(((MapNode) result).getValue());
132 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
133 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
135 newIIContext = new InstanceIdentifierContext<>(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
136 path.getSchemaContext());
138 return new NormalizedNodeContext(newIIContext, result);
141 private static void propagateExceptionAs(final Exception exception) throws RestconfDocumentedException {
142 if (exception instanceof RestconfDocumentedException) {
143 throw (RestconfDocumentedException)exception;
146 if (exception instanceof ResultAlreadySetException) {
147 LOG.debug("Error parsing json input:", exception);
149 throw new RestconfDocumentedException("Error parsing json input: Failed to create new parse result data. "
150 + "Are you creating multiple resources/subresources in POST request?");
153 LOG.debug("Error parsing json input", exception);
155 throw new RestconfDocumentedException("Error parsing input: " + exception.getMessage(), ErrorType.PROTOCOL,
156 ErrorTag.MALFORMED_MESSAGE, exception);
159 public void injectParams(final UriInfo uriInfo, final Request request) {