policy-agent/src/main/java/org/oransc/policyagent/clients/SdnrOnapA1Client.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2019 Nordix Foundation
   6  * %%
   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
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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===================================
  19  */
  20
  21 package org.oransc.policyagent.clients;
  22
  23 import java.lang.invoke.MethodHandles;
  24 import java.util.ArrayList;
  25 import java.util.List;
  26
  27 import org.json.JSONArray;
  28 import org.json.JSONException;
  29 import org.json.JSONObject;
  30 import org.oransc.policyagent.configuration.RicConfig;
  31 import org.oransc.policyagent.repository.Policy;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 import reactor.core.publisher.Flux;
  36 import reactor.core.publisher.Mono;
  37
  38 public class SdnrOnapA1Client implements A1Client {
  39     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  40     private static final String A1_CONTROLLER_URL = "http://sdnc_controller_container:8181/restconf/operations";
  41     private static final String A1_CONTROLLER_USERNAME = "admin";
  42     private static final String A1_CONTROLLER_PASSWORD = "Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U";
  43
  44     private final RicConfig ricConfig;
  45     private final AsyncRestClient restClient;
  46
  47     public SdnrOnapA1Client(RicConfig ricConfig) {
  48         this.ricConfig = ricConfig;
  49         this.restClient = new AsyncRestClient(A1_CONTROLLER_URL);
  50         logger.debug("SdnrOnapA1Client for ric: {}", this.ricConfig.name());
  51     }
  52
  53     @Override
  54     public Mono<List<String>> getPolicyTypeIdentities() {
  55         JSONObject paramsJson = new JSONObject();
  56         paramsJson.put("near-rt-ric-id", ricConfig.baseUrl());
  57         String inputJsonString = createInputJsonString(paramsJson);
  58         logger.debug("POST getPolicyTypeIdentities inputJsonString = {}", inputJsonString);
  59
  60         return restClient
  61             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyTypes", inputJsonString, A1_CONTROLLER_USERNAME,
  62                 A1_CONTROLLER_PASSWORD) //
  63             .flatMap(response -> getValueFromResponse(response, "policy-type-id-list")) //
  64             .flatMap(this::parseJsonArrayOfString);
  65     }
  66
  67     @Override
  68     public Mono<List<String>> getPolicyIdentities() {
  69         return getPolicyTypeIdentities() //
  70             .flatMapMany(types -> Flux.fromIterable(types)) //
  71             .flatMap(type -> getPolicyIdentities(type)) //
  72             .flatMap(policyIds -> Flux.fromIterable(policyIds)) //
  73             .collectList();
  74     }
  75
  76     public Mono<List<String>> getPolicyIdentities(String policyTypeId) {
  77         JSONObject paramsJson = new JSONObject();
  78         paramsJson.put("near-rt-ric-id", ricConfig.baseUrl());
  79         paramsJson.put("policy-type-id", policyTypeId);
  80         String inputJsonString = createInputJsonString(paramsJson);
  81         logger.debug("POST getPolicyIdentities inputJsonString = {}", inputJsonString);
  82
  83         return restClient
  84             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyInstances", inputJsonString, A1_CONTROLLER_USERNAME,
  85                 A1_CONTROLLER_PASSWORD) //
  86             .flatMap(response -> getValueFromResponse(response, "policy-instance-id-list")) //
  87             .flatMap(this::parseJsonArrayOfString);
  88     }
  89
  90     @Override
  91     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
  92         JSONObject paramsJson = new JSONObject();
  93         paramsJson.put("near-rt-ric-id", ricConfig.baseUrl());
  94         paramsJson.put("policy-type-id", policyTypeId);
  95         String inputJsonString = createInputJsonString(paramsJson);
  96         logger.debug("POST getPolicyType inputJsonString = {}", inputJsonString);
  97
  98         return restClient
  99             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyType", inputJsonString, A1_CONTROLLER_USERNAME,
 100                 A1_CONTROLLER_PASSWORD) //
 101             .flatMap(response -> getValueFromResponse(response, "policy-type")) //
 102             .flatMap(this::extractPolicySchema);
 103     }
 104
 105     @Override
 106     public Mono<String> putPolicy(Policy policy) {
 107         JSONObject paramsJson = new JSONObject();
 108         paramsJson.put("near-rt-ric-id", ricConfig.baseUrl());
 109         paramsJson.put("policy-instance-id", policy.id());
 110         paramsJson.put("policy-type-id", policy.type().name());
 111         paramsJson.put("policy-instance", policy.json());
 112         paramsJson.put("properties", new JSONArray());
 113         String inputJsonString = createInputJsonString(paramsJson);
 114         logger.debug("POST putPolicy inputJsonString = {}", inputJsonString);
 115
 116         return restClient.postWithAuthHeader("/A1-ADAPTER-API:createPolicyInstance", inputJsonString,
 117             A1_CONTROLLER_USERNAME, A1_CONTROLLER_PASSWORD);
 118     }
 119
 120     public Mono<String> deletePolicy(String policyTypeId, String policyId) {
 121         JSONObject paramsJson = new JSONObject();
 122         paramsJson.put("near-rt-ric-id", ricConfig.baseUrl());
 123         paramsJson.put("policy-instance-id", policyId);
 124         paramsJson.put("policy-type-id", policyTypeId);
 125         String inputJsonString = createInputJsonString(paramsJson);
 126         logger.debug("POST deletePolicy inputJsonString = {}", inputJsonString);
 127
 128         return restClient.postWithAuthHeader("/A1-ADAPTER-API:deletePolicyInstance", inputJsonString,
 129             A1_CONTROLLER_USERNAME, A1_CONTROLLER_PASSWORD);
 130     }
 131
 132     @Override
 133     public Mono<String> deletePolicy(Policy policy) {
 134         return deletePolicy(policy.type().name(), policy.id());
 135     }
 136
 137     @Override
 138     public Flux<String> deleteAllPolicies() {
 139         return getPolicyTypeIdentities() //
 140             .flatMapMany(types -> Flux.fromIterable(types)) //
 141             .flatMap(typeId -> deletePoliciesForType(typeId)); //
 142     }
 143
 144     private Flux<String> deletePoliciesForType(String typeId) {
 145         return getPolicyIdentities(typeId) //
 146             .flatMapMany(policyIds -> Flux.fromIterable(policyIds)) //
 147             .flatMap(policyId -> deletePolicy(typeId, policyId)); //
 148     }
 149
 150     @Override
 151     public Mono<A1ProtocolType> getProtocolVersion() {
 152         return getPolicyTypeIdentities() //
 153             .flatMap(x -> Mono.just(A1ProtocolType.SDNR_ONAP));
 154     }
 155
 156     private String createInputJsonString(JSONObject paramsJson) {
 157         JSONObject inputJson = new JSONObject();
 158         inputJson.put("input", paramsJson);
 159         return inputJson.toString();
 160     }
 161
 162     private Mono<String> getValueFromResponse(String response, String key) {
 163         logger.debug("A1 client: response = {}", response);
 164         try {
 165             JSONObject outputJson = new JSONObject(response);
 166             JSONObject responseParams = outputJson.getJSONObject("output");
 167             String value = responseParams.get(key).toString();
 168             return Mono.just(value);
 169         } catch (JSONException ex) { // invalid json
 170             return Mono.error(ex);
 171         }
 172     }
 173
 174     private Mono<List<String>> parseJsonArrayOfString(String inputString) {
 175         try {
 176             List<String> arrayList = new ArrayList<>();
 177             JSONArray jsonArray = new JSONArray(inputString);
 178             for (int i = 0; i < jsonArray.length(); i++) {
 179                 arrayList.add(jsonArray.getString(i));
 180             }
 181             logger.debug("A1 client: received list = {}", arrayList);
 182             return Mono.just(arrayList);
 183         } catch (JSONException ex) { // invalid json
 184             return Mono.error(ex);
 185         }
 186     }
 187
 188     private Mono<String> extractPolicySchema(String inputString) {
 189         try {
 190             JSONObject jsonObject = new JSONObject(inputString);
 191             JSONObject schemaObject = jsonObject.getJSONObject("policySchema");
 192             String schemaString = schemaObject.toString();
 193             return Mono.just(schemaString);
 194         } catch (JSONException ex) { // invalid json
 195             return Mono.error(ex);
 196         }
 197     }
 198 }