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.errors.RestconfDocumentedException;
26 import org.opendaylight.restconf.nb.rfc8040.MediaTypes;
27 import org.opendaylight.restconf.nb.rfc8040.handlers.SchemaContextHandler;
28 import org.opendaylight.restconf.nb.rfc8040.legacy.NormalizedNodePayload;
29 import org.opendaylight.yangtools.yang.common.ErrorTag;
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.SchemaPath;
48 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
49 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
50 import org.slf4j.Logger;
51 import org.slf4j.LoggerFactory;
54 @Consumes({ MediaTypes.APPLICATION_YANG_DATA_JSON, MediaType.APPLICATION_JSON })
55 public class JsonNormalizedNodeBodyReader extends AbstractNormalizedNodeBodyReader {
56 private static final Logger LOG = LoggerFactory.getLogger(JsonNormalizedNodeBodyReader.class);
58 public JsonNormalizedNodeBodyReader(final SchemaContextHandler schemaContextHandler,
59 final DOMMountPointService mountPointService) {
60 super(schemaContextHandler, mountPointService);
63 @SuppressWarnings("checkstyle:IllegalCatch")
65 protected NormalizedNodePayload readBody(final InstanceIdentifierContext path, final InputStream entityStream)
66 throws WebApplicationException {
68 return readFrom(path, entityStream, isPost());
69 } catch (final Exception e) {
70 propagateExceptionAs(e);
75 public static NormalizedNodePayload readFrom(
76 final InstanceIdentifierContext path, final InputStream entityStream, final boolean isPost) {
77 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
78 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
80 final EffectiveStatementInference parentSchema;
82 parentSchema = SchemaInferenceStack.ofSchemaPath(path.getSchemaContext(),
83 path.getSchemaNode().getPath()).toInference();
84 } else if (path.getSchemaNode() instanceof SchemaContext
85 || SchemaPath.ROOT.equals(path.getSchemaNode().getPath().getParent())) {
86 parentSchema = SchemaInferenceStack.of(path.getSchemaContext()).toInference();
88 parentSchema = SchemaInferenceStack.ofSchemaPath(path.getSchemaContext(),
89 path.getSchemaNode().getPath().getParent()).toInference();
92 final JsonParserStream jsonParser = JsonParserStream.create(writer,
93 JSONCodecFactorySupplier.RFC7951.getShared(path.getSchemaContext()), parentSchema);
95 final JsonReader reader = new JsonReader(new InputStreamReader(entityStream, StandardCharsets.UTF_8));
96 jsonParser.parse(reader);
98 NormalizedNode result = resultHolder.getResult();
99 final List<YangInstanceIdentifier.PathArgument> iiToDataList = new ArrayList<>();
100 InstanceIdentifierContext newIIContext;
102 while (result instanceof AugmentationNode || result instanceof ChoiceNode) {
103 final Object childNode = ((DataContainerNode) result).body().iterator().next();
105 iiToDataList.add(result.getIdentifier());
107 result = (NormalizedNode) childNode;
111 if (result instanceof MapEntryNode) {
112 iiToDataList.add(new YangInstanceIdentifier.NodeIdentifier(result.getIdentifier().getNodeType()));
113 iiToDataList.add(result.getIdentifier());
115 final List<? extends @NonNull EffectiveStatement<?, ?>> parentPath = parentSchema.statementPath();
116 if (parentPath.isEmpty() || !(parentPath.get(parentPath.size() - 1) instanceof OperationDefinition)) {
117 iiToDataList.add(result.getIdentifier());
121 if (result instanceof MapNode) {
122 result = Iterables.getOnlyElement(((MapNode) result).body());
126 final YangInstanceIdentifier fullIIToData = YangInstanceIdentifier.create(Iterables.concat(
127 path.getInstanceIdentifier().getPathArguments(), iiToDataList));
129 newIIContext = new InstanceIdentifierContext(fullIIToData, path.getSchemaNode(), path.getMountPoint(),
130 path.getSchemaContext());
132 // FIXME: can result really be null?
133 return NormalizedNodePayload.ofNullable(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);