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.netconf.sal.restconf.impl.InstanceIdentifierContext;
29 import org.opendaylight.netconf.sal.restconf.impl.NormalizedNodeContext;
30 import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
31 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
32 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorType;
33 import org.opendaylight.restconf.Draft17;
34 import org.opendaylight.restconf.utils.RestconfConstants;
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 Draft17.MediaTypes.DATA + RestconfConstants.JSON, MediaType.APPLICATION_JSON })
57 public class JsonNormalizedNodeBodyReader extends AbstractIdentifierAwareJaxRsProvider implements MessageBodyReader<NormalizedNodeContext> {
59 private final static Logger LOG = LoggerFactory.getLogger(JsonNormalizedNodeBodyReader.class);
62 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
63 final MediaType mediaType) {
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 void propagateExceptionAs(final Exception e) throws RestconfDocumentedException {
81 if(e instanceof RestconfDocumentedException) {
82 throw (RestconfDocumentedException)e;
85 if(e instanceof ResultAlreadySetException) {
86 LOG.debug("Error parsing json input:", e);
88 throw new RestconfDocumentedException("Error parsing json input: Failed to create new parse result data. " +
89 "Are you creating multiple resources/subresources in POST request?");
92 LOG.debug("Error parsing json input", e);
94 throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
95 ErrorTag.MALFORMED_MESSAGE, e);
98 public static NormalizedNodeContext readFrom(final String uriPath, final InputStream entityStream,
99 final boolean isPost) throws RestconfDocumentedException {
102 return readFrom(ControllerContext.getInstance().toInstanceIdentifier(uriPath), entityStream, isPost);
103 } catch (final Exception e) {
104 propagateExceptionAs(e);
105 return null; // no-op
109 private static NormalizedNodeContext readFrom(final InstanceIdentifierContext<?> path, final InputStream entityStream,
110 final boolean isPost) throws IOException {
111 if (entityStream.available() < 1) {
112 return new NormalizedNodeContext(path, null);
114 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
115 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
117 final SchemaNode parentSchema;
119 // FIXME: We need dispatch for RPC.
120 parentSchema = path.getSchemaNode();
121 } else if(path.getSchemaNode() instanceof SchemaContext) {
122 parentSchema = path.getSchemaContext();
124 if (SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
125 parentSchema = path.getSchemaContext();
127 parentSchema = SchemaContextUtil.findDataSchemaNode(path.getSchemaContext(), path.getSchemaNode().getPath().getParent());
131 final JsonParserStream jsonParser = JsonParserStream.create(writer, path.getSchemaContext(), parentSchema);
132 final JsonReader reader = new JsonReader(new InputStreamReader(entityStream));
133 jsonParser.parse(reader);
135 NormalizedNode<?, ?> result = resultHolder.getResult();
136 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
137 InstanceIdentifierContext<? extends SchemaNode> newIIContext;
139 while ((result instanceof AugmentationNode) || (result instanceof ChoiceNode)) {
140 final Object childNode = ((DataContainerNode) result).getValue().iterator().next();
142 iiToDataList.add(result.getIdentifier());
144 result = (NormalizedNode<?, ?>) childNode;
148 if (result instanceof MapEntryNode) {
149 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getNodeType()));
150 iiToDataList.add(result.getIdentifier());
152 iiToDataList.add(result.getIdentifier());
155 if (result instanceof MapNode) {
156 result = Iterables.getOnlyElement(((MapNode) result).getValue());
160 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
161 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
163 newIIContext = new InstanceIdentifierContext<>(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
164 path.getSchemaContext());
166 return new NormalizedNodeContext(newIIContext, result);