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;
26 import com.google.gson.JsonElement;
27 import com.google.gson.JsonObject;
29 import java.util.ArrayList;
30 import java.util.List;
32 import org.json.JSONArray;
33 import org.json.JSONException;
34 import org.json.JSONObject;
36 import reactor.core.publisher.Flux;
37 import reactor.core.publisher.Mono;
40 * Common json functionality used by the SDNC clients
42 class SdncJsonHelper {
43 private static Gson gson = new GsonBuilder() //
44 .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES) //
47 private SdncJsonHelper() {
50 public static Flux<String> parseJsonArrayOfString(String inputString) {
52 List<String> arrayList = new ArrayList<>();
53 if (!inputString.isEmpty()) {
54 JSONArray jsonArray = new JSONArray(inputString);
55 for (int i = 0; i < jsonArray.length(); i++) {
56 arrayList.add(jsonArray.getString(i));
59 return Flux.fromIterable(arrayList);
60 } catch (JSONException ex) { // invalid json
61 return Flux.error(ex);
65 public static <T> String createInputJsonString(T params) {
66 JsonElement paramsJson = gson.toJsonTree(params);
67 JsonObject jsonObj = new JsonObject();
68 jsonObj.add("input", paramsJson);
69 return gson.toJson(jsonObj);
72 public static Mono<String> getValueFromResponse(String response, String key) {
74 JSONObject outputJson = new JSONObject(response);
75 JSONObject responseParams = outputJson.getJSONObject("output");
76 if (!responseParams.has(key)) {
79 String value = responseParams.get(key).toString();
80 return Mono.just(value);
81 } catch (JSONException ex) { // invalid json
82 return Mono.error(ex);
86 public static Mono<String> extractPolicySchema(String inputString) {
88 JSONObject jsonObject = new JSONObject(inputString);
89 JSONObject schemaObject = jsonObject.getJSONObject("policySchema");
90 String schemaString = schemaObject.toString();
91 return Mono.just(schemaString);
92 } catch (JSONException ex) { // invalid json
93 return Mono.error(ex);