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.base.Throwables;
11 import com.google.common.collect.Iterables;
12 import com.google.gson.stream.JsonReader;
13 import java.io.IOException;
14 import java.io.InputStream;
15 import java.io.InputStreamReader;
16 import java.lang.annotation.Annotation;
17 import java.lang.reflect.Type;
18 import java.nio.charset.StandardCharsets;
19 import java.util.ArrayList;
20 import java.util.List;
21 import java.util.Optional;
22 import javax.ws.rs.Consumes;
23 import javax.ws.rs.WebApplicationException;
24 import javax.ws.rs.core.MediaType;
25 import javax.ws.rs.core.MultivaluedMap;
26 import javax.ws.rs.ext.MessageBodyReader;
27 import javax.ws.rs.ext.Provider;
28 import org.opendaylight.netconf.sal.rest.api.Draft02;
29 import org.opendaylight.netconf.sal.rest.api.RestconfService;
30 import org.opendaylight.netconf.sal.restconf.impl.ControllerContext;
31 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
32 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
33 import org.opendaylight.restconf.common.util.RestUtil;
34 import org.opendaylight.yangtools.yang.common.ErrorTag;
35 import org.opendaylight.yangtools.yang.common.ErrorType;
36 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
37 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
38 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
39 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
40 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
41 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
42 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
43 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
44 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
45 import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream;
46 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
47 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
48 import org.opendaylight.yangtools.yang.data.impl.schema.ResultAlreadySetException;
49 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
50 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
51 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
52 import org.slf4j.Logger;
53 import org.slf4j.LoggerFactory;
57 Draft02.MediaTypes.DATA + RestconfService.JSON,
58 Draft02.MediaTypes.OPERATION + RestconfService.JSON,
59 MediaType.APPLICATION_JSON
61 public class JsonNormalizedNodeBodyReader
62 extends AbstractIdentifierAwareJaxRsProvider implements MessageBodyReader<NormalizedNodeContext> {
64 private static final Logger LOG = LoggerFactory.getLogger(JsonNormalizedNodeBodyReader.class);
66 public JsonNormalizedNodeBodyReader(final ControllerContext controllerContext) {
67 super(controllerContext);
71 public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations,
72 final MediaType mediaType) {
76 @SuppressWarnings("checkstyle:IllegalCatch")
78 public NormalizedNodeContext readFrom(final Class<NormalizedNodeContext> type, final Type genericType,
79 final Annotation[] annotations, final MediaType mediaType,
80 final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws
81 WebApplicationException {
83 return readFrom(getInstanceIdentifierContext(), entityStream, isPost());
84 } catch (final Exception e) {
85 propagateExceptionAs(e);
90 @SuppressWarnings("checkstyle:IllegalCatch")
91 public static NormalizedNodeContext readFrom(final String uriPath, final InputStream entityStream,
92 final boolean isPost, final ControllerContext controllerContext) throws RestconfDocumentedException {
95 return readFrom(controllerContext.toInstanceIdentifier(uriPath), entityStream, isPost);
96 } catch (final Exception e) {
97 propagateExceptionAs(e);
102 private static NormalizedNodeContext readFrom(final InstanceIdentifierContext path,
103 final InputStream entityStream, final boolean isPost)
105 final Optional<InputStream> nonEmptyInputStreamOptional = RestUtil.isInputStreamEmpty(entityStream);
106 if (nonEmptyInputStreamOptional.isEmpty()) {
107 return new NormalizedNodeContext(path, null);
109 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
110 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
112 final SchemaInferenceStack parentSchema;
114 // FIXME: We need dispatch for RPC.
115 parentSchema = SchemaInferenceStack.ofSchemaPath(path.getSchemaContext(), path.getSchemaNode().getPath());
116 } else if (path.getSchemaNode() instanceof SchemaContext
117 || SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
118 parentSchema = SchemaInferenceStack.of(path.getSchemaContext());
120 parentSchema = SchemaInferenceStack.ofSchemaPath(path.getSchemaContext(),
121 path.getSchemaNode().getPath().getParent());
124 final JsonParserStream jsonParser = JsonParserStream.create(writer,
125 JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02.getShared(path.getSchemaContext()),
126 parentSchema.toInference());
127 final JsonReader reader = new JsonReader(new InputStreamReader(nonEmptyInputStreamOptional.get(),
128 StandardCharsets.UTF_8));
129 jsonParser.parse(reader);
131 NormalizedNode result = resultHolder.getResult();
132 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
133 InstanceIdentifierContext newIIContext;
135 while (result instanceof AugmentationNode || result instanceof ChoiceNode) {
136 final Object childNode = ((DataContainerNode) result).body().iterator().next();
138 iiToDataList.add(result.getIdentifier());
140 result = (NormalizedNode) childNode;
144 if (result instanceof MapEntryNode) {
145 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getIdentifier().getNodeType()));
146 iiToDataList.add(result.getIdentifier());
148 iiToDataList.add(result.getIdentifier());
151 if (result instanceof MapNode) {
152 result = Iterables.getOnlyElement(((MapNode) result).body());
156 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
157 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
159 newIIContext = new InstanceIdentifierContext(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
160 path.getSchemaContext());
162 return new NormalizedNodeContext(newIIContext, result);
165 private static void propagateExceptionAs(final Exception exception) throws RestconfDocumentedException {
166 Throwables.throwIfInstanceOf(exception, RestconfDocumentedException.class);
167 LOG.debug("Error parsing json input", exception);
169 if (exception instanceof ResultAlreadySetException) {
170 throw new RestconfDocumentedException("Error parsing json input: Failed to create new parse result data. "
171 + "Are you creating multiple resources/subresources in POST request?", exception);
174 RestconfDocumentedException.throwIfYangError(exception);
175 throw new RestconfDocumentedException("Error parsing input: " + exception.getMessage(), ErrorType.PROTOCOL,
176 ErrorTag.MALFORMED_MESSAGE, exception);