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.gson.stream.JsonWriter;
11 import java.io.IOException;
12 import java.io.OutputStream;
13 import javax.ws.rs.Produces;
14 import javax.ws.rs.core.MediaType;
15 import javax.ws.rs.ext.Provider;
16 import org.eclipse.jdt.annotation.Nullable;
17 import org.opendaylight.restconf.api.FormatParameters;
18 import org.opendaylight.restconf.api.MediaTypes;
19 import org.opendaylight.restconf.nb.rfc8040.jersey.providers.api.RestconfNormalizedNodeWriter;
20 import org.opendaylight.restconf.nb.rfc8040.legacy.WriterParameters;
21 import org.opendaylight.restconf.server.spi.FormattableBodySupport;
22 import org.opendaylight.yangtools.yang.common.XMLNamespace;
23 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
24 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
25 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
26 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
27 import org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter;
28 import org.opendaylight.yangtools.yang.data.spi.node.ImmutableNodes;
29 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
30 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.Inference;
33 @Produces({ MediaTypes.APPLICATION_YANG_DATA_JSON, MediaType.APPLICATION_JSON })
34 public final class JsonNormalizedNodeBodyWriter extends AbstractNormalizedNodeBodyWriter {
36 void writeData(final SchemaInferenceStack stack, final NormalizedNode data, final WriterParameters writerParameters,
37 final FormatParameters format, final OutputStream out) throws IOException {
38 if (!stack.isEmpty()) {
42 // RESTCONF allows returning one list item. We need to wrap it in map node in order to serialize it properly
43 final var toSerialize = data instanceof MapEntryNode mapEntry
44 ? ImmutableNodes.newSystemMapBuilder()
45 .withNodeIdentifier(new NodeIdentifier(data.name().getNodeType()))
50 try (var jsonWriter = FormattableBodySupport.createJsonWriter(out, format)) {
51 jsonWriter.beginObject();
53 final var nnWriter = createNormalizedNodeWriter(stack.toInference(), jsonWriter, writerParameters, null);
54 nnWriter.write(toSerialize);
57 jsonWriter.endObject().flush();
61 private static RestconfNormalizedNodeWriter createNormalizedNodeWriter(final Inference inference,
62 final JsonWriter jsonWriter, final WriterParameters writerParameters,
63 final @Nullable XMLNamespace initialNamespace) {
64 // TODO: Performance: Cache JSON Codec factory and schema context
65 final var codecs = JSONCodecFactorySupplier.RFC7951.getShared(inference.modelContext());
66 return ParameterAwareNormalizedNodeWriter.forStreamWriter(
67 JSONNormalizedNodeStreamWriter.createNestedWriter(codecs, inference,
68 initialNamespace, jsonWriter), writerParameters.depth(), writerParameters.fields());