2 * Copyright © 2018 Orange, 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
9 package org.opendaylight.transportpce.pce.gnpy;
11 import com.google.common.collect.FluentIterable;
12 import com.google.gson.Gson;
13 import com.google.gson.JsonObject;
14 import com.google.gson.JsonParser;
15 import com.google.gson.stream.JsonWriter;
16 import java.io.FileWriter;
17 import java.io.IOException;
18 import java.io.StringWriter;
19 import java.io.Writer;
20 import java.nio.charset.StandardCharsets;
21 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
22 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
23 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.GnpyApi;
24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
25 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
26 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
27 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory;
28 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier;
29 import org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter;
30 import org.opendaylight.yangtools.yang.data.codec.gson.JsonWriterFactory;
31 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
33 public class ServiceDataStoreOperationsImpl implements ServiceDataStoreOperations {
35 private static final JsonParser PARSER = new JsonParser();
36 private BindingDOMCodecServices bindingDOMCodecServices;
38 public ServiceDataStoreOperationsImpl(BindingDOMCodecServices bindingDOMCodecServices) throws GnpyException {
39 this.bindingDOMCodecServices = bindingDOMCodecServices;
43 public String createJsonStringFromDataObject(final InstanceIdentifier<GnpyApi> id, GnpyApi object)
44 throws GnpyException {
45 final SchemaPath scPath = SchemaPath.create(FluentIterable
46 .from(id.getPathArguments())
47 .transform(input -> BindingReflections.findQName(input.getType())), true);
49 * This function needs : - context - scPath.getParent() -
50 * scPath.getLastComponent().getNamespace(), -
51 * JsonWriterFactory.createJsonWriter(writer)
54 JSONCodecFactory codecFactory = JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02
55 .getShared(bindingDOMCodecServices.getRuntimeContext().getEffectiveModelContext());
56 try (Writer writer = new StringWriter();
57 JsonWriter jsonWriter = JsonWriterFactory.createJsonWriter(writer, 2);) {
58 NormalizedNodeStreamWriter jsonStreamWriter = JSONNormalizedNodeStreamWriter.createExclusiveWriter(
59 codecFactory, scPath.getParent(), scPath.getLastComponent().getNamespace(), jsonWriter);
60 try (NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(jsonStreamWriter)) {
61 nodeWriter.write(bindingDOMCodecServices.toNormalizedNode(id, object).getValue());
64 JsonObject asJsonObject = PARSER.parse(writer.toString()).getAsJsonObject();
65 return new Gson().toJson(asJsonObject);
66 } catch (IOException e) {
67 throw new GnpyException("Cannot convert data to Json string", e);
71 // Write the json as a string in a file
73 public void writeStringFile(String jsonString, String fileName) throws GnpyException {
74 try (FileWriter file = new FileWriter(fileName,StandardCharsets.UTF_8)) {
75 file.write(jsonString);
76 } catch (IOException e) {
77 throw new GnpyException("In ServiceDataStoreOperationsImpl : exception during file writing",e);