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;
37 public class JsonHelper {
38 private static Gson gson = new GsonBuilder() //
39 .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES) //
42 private JsonHelper() {
46 public static Flux<String> parseJsonArrayOfString(String inputString) {
48 List<String> arrayList = new ArrayList<>();
49 if (!inputString.isEmpty()) {
50 JSONArray jsonArray = new JSONArray(inputString);
51 for (int i = 0; i < jsonArray.length(); i++) {
52 arrayList.add(jsonArray.getString(i));
55 return Flux.fromIterable(arrayList);
56 } catch (JSONException ex) { // invalid json
57 return Flux.error(ex);
61 public static <T> String createInputJsonString(T params) {
62 JSONObject inputJson = new JSONObject();
63 inputJson.put("input", gson.toJson(params));
64 return inputJson.toString();
67 public static Mono<String> getValueFromResponse(String response, String key) {
69 JSONObject outputJson = new JSONObject(response);
70 JSONObject responseParams = outputJson.getJSONObject("output");
71 if (!responseParams.has(key)) {
74 String value = responseParams.get(key).toString();
75 return Mono.just(value);
76 } catch (JSONException ex) { // invalid json
77 return Mono.error(ex);
81 public static Mono<String> extractPolicySchema(String inputString) {
83 JSONObject jsonObject = new JSONObject(inputString);
84 JSONObject schemaObject = jsonObject.getJSONObject("policySchema");
85 String schemaString = schemaObject.toString();
86 return Mono.just(schemaString);
87 } catch (JSONException ex) { // invalid json
88 return Mono.error(ex);
92 public static Mono<String> validateJson(String inputString) {
94 new JSONObject(inputString);
95 return Mono.just(inputString);
96 } catch (JSONException ex) { // invalid json
97 return Mono.error(ex);