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.nb.rfc8040.jersey.providers;
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.InputStream;
14 import java.io.InputStreamReader;
15 import java.nio.charset.StandardCharsets;
16 import java.util.ArrayList;
17 import java.util.List;
18 import javax.ws.rs.Consumes;
19 import javax.ws.rs.WebApplicationException;
20 import javax.ws.rs.core.MediaType;
21 import javax.ws.rs.ext.Provider;
22 import org.eclipse.jdt.annotation.NonNull;
23 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
24 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
25 import org.opendaylight.restconf.common.context.NormalizedNodeContext;
26 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
27 import org.opendaylight.restconf.common.errors.RestconfError.ErrorTag;
28 import org.opendaylight.restconf.nb.rfc8040.MediaTypes;
29 import org.opendaylight.restconf.nb.rfc8040.handlers.SchemaContextHandler;
30 import org.opendaylight.yangtools.yang.common.ErrorType;
31 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
32 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
33 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
34 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
35 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
36 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
37 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
38 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
39 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
40 import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream;
41 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
42 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
43 import org.opendaylight.yangtools.yang.data.impl.schema.ResultAlreadySetException;
44 import org.opendaylight.yangtools.yang.model.api.EffectiveStatementInference;
45 import org.opendaylight.yangtools.yang.model.api.OperationDefinition;
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.api.meta.EffectiveStatement;
50 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
51 import org.slf4j.Logger;
52 import org.slf4j.LoggerFactory;
55 @Consumes({ MediaTypes.APPLICATION_YANG_DATA_JSON, MediaType.APPLICATION_JSON })
56 public class JsonNormalizedNodeBodyReader extends AbstractNormalizedNodeBodyReader {
57 private static final Logger LOG = LoggerFactory.getLogger(JsonNormalizedNodeBodyReader.class);
59 public JsonNormalizedNodeBodyReader(final SchemaContextHandler schemaContextHandler,
60 final DOMMountPointService mountPointService) {
61 super(schemaContextHandler, mountPointService);
64 @SuppressWarnings("checkstyle:IllegalCatch")
66 protected NormalizedNodeContext readBody(final InstanceIdentifierContext<?> path, final InputStream entityStream)
67 throws WebApplicationException {
69 return readFrom(path, entityStream, isPost());
70 } catch (final Exception e) {
71 propagateExceptionAs(e);
76 public static NormalizedNodeContext readFrom(
77 final InstanceIdentifierContext<?> path, final InputStream entityStream, final boolean isPost) {
78 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
79 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
81 final EffectiveStatementInference parentSchema;
83 parentSchema = SchemaInferenceStack.ofSchemaPath(path.getSchemaContext(),
84 path.getSchemaNode().getPath()).toInference();
85 } else if (path.getSchemaNode() instanceof SchemaContext
86 || SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
87 parentSchema = SchemaInferenceStack.of(path.getSchemaContext()).toInference();
89 parentSchema = SchemaInferenceStack.ofSchemaPath(path.getSchemaContext(),
90 path.getSchemaNode().getPath().getParent()).toInference();
93 final JsonParserStream jsonParser = JsonParserStream.create(writer,
94 JSONCodecFactorySupplier.RFC7951.getShared(path.getSchemaContext()), parentSchema);
96 final JsonReader reader = new JsonReader(new InputStreamReader(entityStream, StandardCharsets.UTF_8));
97 jsonParser.parse(reader);
99 NormalizedNode result = resultHolder.getResult();
100 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
101 InstanceIdentifierContext<? extends SchemaNode> newIIContext;
103 while (result instanceof AugmentationNode || result instanceof ChoiceNode) {
104 final Object childNode = ((DataContainerNode) result).body().iterator().next();
106 iiToDataList.add(result.getIdentifier());
108 result = (NormalizedNode) childNode;
112 if (result instanceof MapEntryNode) {
113 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getIdentifier().getNodeType()));
114 iiToDataList.add(result.getIdentifier());
116 final List<? extends @NonNull EffectiveStatement<?, ?>> parentPath = parentSchema.statementPath();
117 if (parentPath.isEmpty() || !(parentPath.get(parentPath.size() - 1) instanceof OperationDefinition)) {
118 iiToDataList.add(result.getIdentifier());
122 if (result instanceof MapNode) {
123 result = Iterables.getOnlyElement(((MapNode) result).body());
127 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
128 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
130 newIIContext = new InstanceIdentifierContext<>(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
131 path.getSchemaContext());
133 return new NormalizedNodeContext(newIIContext, result);
136 private static void propagateExceptionAs(final Exception exception) throws RestconfDocumentedException {
137 Throwables.throwIfInstanceOf(exception, RestconfDocumentedException.class);
138 LOG.debug("Error parsing json input", exception);
140 if (exception instanceof ResultAlreadySetException) {
141 throw new RestconfDocumentedException("Error parsing json input: Failed to create new parse result data. "
142 + "Are you creating multiple resources/subresources in POST request?", exception);
145 RestconfDocumentedException.throwIfYangError(exception);
146 throw new RestconfDocumentedException("Error parsing input: " + exception.getMessage(), ErrorType.PROTOCOL,
147 ErrorTag.MALFORMED_MESSAGE, exception);