policy-agent/src/main/java/org/oransc/policyagent/clients/SdncOscA1Client.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2020 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.List;
  25 import org.oransc.policyagent.configuration.RicConfig;
  26 import org.oransc.policyagent.repository.Policy;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29 import reactor.core.publisher.Flux;
  30 import reactor.core.publisher.Mono;
  31
  32 public class SdncOscA1Client implements A1Client {
  33     private static final String URL_PREFIX = "/A1-ADAPTER-API:";
  34
  35     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  36
  37     private final String a1ControllerUsername;
  38     private final String a1ControllerPassword;
  39     private final RicConfig ricConfig;
  40     private final AsyncRestClient restClient;
  41
  42     public SdncOscA1Client(RicConfig ricConfig, String baseUrl, String username, String password) {
  43         this(ricConfig, username, password, new AsyncRestClient(baseUrl + "/restconf/operations"));
  44         if (logger.isDebugEnabled()) {
  45             logger.debug("SdncOscA1Client for ric: {}, a1ControllerBaseUrl: {}", ricConfig.name(), baseUrl);
  46         }
  47     }
  48
  49     public SdncOscA1Client(RicConfig ricConfig, String username, String password, AsyncRestClient restClient) {
  50         this.ricConfig = ricConfig;
  51         this.a1ControllerUsername = username;
  52         this.a1ControllerPassword = password;
  53         this.restClient = restClient;
  54     }
  55
  56     @Override
  57     public Mono<List<String>> getPolicyTypeIdentities() {
  58         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
  59             .nearRtRicUrl(ricConfig.baseUrl()) //
  60             .build();
  61         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  62         logger.debug("POST getPolicyTypeIdentities inputJsonString = {}", inputJsonString);
  63
  64         return restClient
  65             .postWithAuthHeader(URL_PREFIX + "getPolicyTypeIdentities", inputJsonString, a1ControllerUsername,
  66                 a1ControllerPassword) //
  67             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type-id-list")) //
  68             .flatMapMany(JsonHelper::parseJsonArrayOfString) //
  69             .collectList();
  70     }
  71
  72     @Override
  73     public Mono<List<String>> getPolicyIdentities() {
  74         return getPolicyIds() //
  75             .collectList();
  76     }
  77
  78     @Override
  79     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
  80         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
  81             .nearRtRicUrl(ricConfig.baseUrl()) //
  82             .policyTypeId(policyTypeId) //
  83             .build();
  84         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  85         logger.debug("POST getPolicyType inputJsonString = {}", inputJsonString);
  86
  87         return restClient
  88             .postWithAuthHeader(URL_PREFIX + "getPolicyType", inputJsonString, a1ControllerUsername,
  89                 a1ControllerPassword) //
  90             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type")) //
  91             .flatMap(JsonHelper::extractPolicySchema);
  92     }
  93
  94     @Override
  95     public Mono<String> putPolicy(Policy policy) {
  96         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
  97             .nearRtRicUrl(ricConfig.baseUrl()) //
  98             .policyTypeId(policy.type().name()) //
  99             .policyId(policy.id()) //
 100             .policy(policy.json()) //
 101             .build();
 102         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 103         logger.debug("POST putPolicy inputJsonString = {}", inputJsonString);
 104
 105         return restClient
 106             .postWithAuthHeader(URL_PREFIX + "putPolicy", inputJsonString, a1ControllerUsername, a1ControllerPassword)
 107             .flatMap(response -> JsonHelper.getValueFromResponse(response, "returned-policy")) //
 108             .flatMap(JsonHelper::validateJson);
 109     }
 110
 111     @Override
 112     public Mono<String> deletePolicy(Policy policy) {
 113         return deletePolicyById(policy.id());
 114     }
 115
 116     @Override
 117     public Flux<String> deleteAllPolicies() {
 118         return getPolicyIds() //
 119             .flatMap(this::deletePolicyById); //
 120     }
 121
 122     @Override
 123     public Mono<A1ProtocolType> getProtocolVersion() {
 124         return getPolicyTypeIdentities() //
 125             .flatMap(x -> Mono.just(A1ProtocolType.SDNC_OSC));
 126     }
 127
 128     @Override
 129     public Mono<String> getPolicyStatus(Policy policy) {
 130         return Mono.error(new Exception("Status not implemented in the SDNC controller"));
 131     }
 132
 133     private Flux<String> getPolicyIds() {
 134         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
 135             .nearRtRicUrl(ricConfig.baseUrl()) //
 136             .build();
 137         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 138         logger.debug("POST getPolicyIdentities inputJsonString = {}", inputJsonString);
 139
 140         return restClient
 141             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyIdentities", inputJsonString, a1ControllerUsername,
 142                 a1ControllerPassword) //
 143             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-id-list")) //
 144             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 145     }
 146
 147     private Mono<String> deletePolicyById(String policyId) {
 148         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
 149             .nearRtRicUrl(ricConfig.baseUrl()) //
 150             .policyId(policyId) //
 151             .build();
 152
 153         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 154         logger.debug("POST deletePolicy inputJsonString = {}", inputJsonString);
 155
 156         return restClient.postWithAuthHeader(URL_PREFIX + "deletePolicy", inputJsonString, a1ControllerUsername,
 157             a1ControllerPassword);
 158     }
 159 }