2 * ========================LICENSE_START=================================
5 * Copyright (C) 2020 Nordix Foundation
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ========================LICENSE_END===================================
21 package org.oransc.policyagent.clients;
23 import com.google.gson.FieldNamingPolicy;
24 import com.google.gson.Gson;
25 import com.google.gson.GsonBuilder;
27 import java.util.ArrayList;
28 import java.util.List;
30 import org.json.JSONArray;
31 import org.json.JSONException;
32 import org.json.JSONObject;
34 import reactor.core.publisher.Flux;
35 import reactor.core.publisher.Mono;
38 * Common json functionality used by the SDNC clients
40 class SdncJsonHelper {
41 private static Gson gson = new GsonBuilder() //
42 .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES) //
45 private SdncJsonHelper() {
48 public static Flux<String> parseJsonArrayOfString(String inputString) {
50 List<String> arrayList = new ArrayList<>();
51 if (!inputString.isEmpty()) {
52 JSONArray jsonArray = new JSONArray(inputString);
53 for (int i = 0; i < jsonArray.length(); i++) {
54 arrayList.add(jsonArray.getString(i));
57 return Flux.fromIterable(arrayList);
58 } catch (JSONException ex) { // invalid json
59 return Flux.error(ex);
63 public static <T> String createInputJsonString(T params) {
64 JSONObject inputJson = new JSONObject();
65 inputJson.put("input", gson.toJson(params));
66 return inputJson.toString();
69 public static Mono<String> getValueFromResponse(String response, String key) {
71 JSONObject outputJson = new JSONObject(response);
72 JSONObject responseParams = outputJson.getJSONObject("output");
73 if (!responseParams.has(key)) {
76 String value = responseParams.get(key).toString();
77 return Mono.just(value);
78 } catch (JSONException ex) { // invalid json
79 return Mono.error(ex);
83 public static Mono<String> extractPolicySchema(String inputString) {
85 JSONObject jsonObject = new JSONObject(inputString);
86 JSONObject schemaObject = jsonObject.getJSONObject("policySchema");
87 String schemaString = schemaObject.toString();
88 return Mono.just(schemaString);
89 } catch (JSONException ex) { // invalid json
90 return Mono.error(ex);