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.controller.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.controller.sal.rest.api.Draft02;
26 import org.opendaylight.controller.sal.rest.api.RestconfService;
27 import org.opendaylight.controller.sal.restconf.impl.ControllerContext;
28 import org.opendaylight.controller.sal.restconf.impl.InstanceIdentifierContext;
29 import org.opendaylight.controller.sal.restconf.impl.NormalizedNodeContext;
30 import org.opendaylight.controller.sal.restconf.impl.RestconfDocumentedException;
31 import org.opendaylight.controller.sal.restconf.impl.RestconfError.ErrorTag;
32 import org.opendaylight.controller.sal.restconf.impl.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 extends AbstractIdentifierAwareJaxRsProvider implements MessageBodyReader<NormalizedNodeContext> {
57 private final static Logger LOG = LoggerFactory.getLogger(JsonNormalizedNodeBodyReader.class);
60 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
61 final MediaType mediaType) {
66 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
67 final Annotation[] annotations, final MediaType mediaType,
68 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream)
69 throws WebApplicationException, IOException {
71 return readFrom(getInstanceIdentifierContext(), entityStream, isPost());
72 } catch (final Exception e) {
73 propagateExceptionAs(e);
78 private static void propagateExceptionAs(Exception e) throws RestconfDocumentedException {
79 if(e instanceof RestconfDocumentedException) {
80 throw (RestconfDocumentedException)e;
83 if(e instanceof ResultAlreadySetException) {
84 LOG.debug("Error parsing json input:", e);
86 throw new RestconfDocumentedException("Error parsing json input: Failed to create new parse result data. " +
87 "Are you creating multiple resources/subresources in POST request?");
90 LOG.debug("Error parsing json input", e);
92 throw new RestconfDocumentedException("Error parsing input: " + e.getMessage(), ErrorType.PROTOCOL,
93 ErrorTag.MALFORMED_MESSAGE, e);
96 public static NormalizedNodeContext readFrom(final String uriPath, final InputStream entityStream,
97 final boolean isPost) throws RestconfDocumentedException {
100 return readFrom(ControllerContext.getInstance().toInstanceIdentifier(uriPath), entityStream, isPost);
101 } catch (final Exception e) {
102 propagateExceptionAs(e);
103 return null; // no-op
107 private static NormalizedNodeContext readFrom(final InstanceIdentifierContext<?> path, final InputStream entityStream,
108 final boolean isPost) throws IOException {
109 if (entityStream.available() < 1) {
110 return new NormalizedNodeContext(path, null);
112 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
113 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
115 final SchemaNode parentSchema;
117 // FIXME: We need dispatch for RPC.
118 parentSchema = path.getSchemaNode();
119 } else if(path.getSchemaNode() instanceof SchemaContext) {
120 parentSchema = path.getSchemaContext();
122 if (SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
123 parentSchema = path.getSchemaContext();
125 parentSchema = SchemaContextUtil.findDataSchemaNode(path.getSchemaContext(), path.getSchemaNode().getPath().getParent());
129 final JsonParserStream jsonParser = JsonParserStream.create(writer, path.getSchemaContext(), parentSchema);
130 final JsonReader reader = new JsonReader(new InputStreamReader(entityStream));
131 jsonParser.parse(reader);
133 NormalizedNode<?, ?> result = resultHolder.getResult();
134 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
135 InstanceIdentifierContext<? extends SchemaNode> newIIContext;
137 while (result instanceof AugmentationNode || result instanceof ChoiceNode) {
138 final Object childNode = ((DataContainerNode) result).getValue().iterator().next();
140 iiToDataList.add(result.getIdentifier());
142 result = (NormalizedNode<?, ?>) childNode;
146 if (result instanceof MapEntryNode) {
147 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getNodeType()));
148 iiToDataList.add(result.getIdentifier());
150 iiToDataList.add(result.getIdentifier());
153 if (result instanceof MapNode) {
154 result = Iterables.getOnlyElement(((MapNode) result).getValue());
158 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
159 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
161 newIIContext = new InstanceIdentifierContext<>(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
162 path.getSchemaContext());
164 return new NormalizedNodeContext(newIIContext, result);