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
  26 import org.oransc.policyagent.configuration.RicConfig;
  27 import org.oransc.policyagent.repository.Policy;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import reactor.core.publisher.Flux;
  32 import reactor.core.publisher.Mono;
  33
  34 public class SdncOscA1Client implements A1Client {
  35     private static final String URL_PREFIX = "/A1-ADAPTER-API:";
  36
  37     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  38
  39     private final String a1ControllerUsername;
  40     private final String a1ControllerPassword;
  41     private final RicConfig ricConfig;
  42     private final AsyncRestClient restClient;
  43
  44     public SdncOscA1Client(RicConfig ricConfig, String baseUrl, String username, String password) {
  45         this(ricConfig, username, password, new AsyncRestClient(baseUrl + "/restconf/operations"));
  46         if (logger.isDebugEnabled()) {
  47             logger.debug("SdncOscA1Client for ric: {}, a1ControllerBaseUrl: {}", ricConfig.name(), baseUrl);
  48         }
  49     }
  50
  51     public SdncOscA1Client(RicConfig ricConfig, String username, String password, AsyncRestClient restClient) {
  52         this.ricConfig = ricConfig;
  53         this.a1ControllerUsername = username;
  54         this.a1ControllerPassword = password;
  55         this.restClient = restClient;
  56     }
  57
  58     @Override
  59     public Mono<List<String>> getPolicyTypeIdentities() {
  60         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
  61             .nearRtRicUrl(ricConfig.baseUrl()) //
  62             .build();
  63         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  64         logger.debug("POST getPolicyTypeIdentities inputJsonString = {}", inputJsonString);
  65
  66         return restClient
  67             .postWithAuthHeader(URL_PREFIX + "getPolicyTypeIdentities", inputJsonString, a1ControllerUsername,
  68                 a1ControllerPassword) //
  69             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type-id-list")) //
  70             .flatMapMany(JsonHelper::parseJsonArrayOfString) //
  71             .collectList();
  72     }
  73
  74     @Override
  75     public Mono<List<String>> getPolicyIdentities() {
  76         return getPolicyIds() //
  77             .collectList();
  78     }
  79
  80     @Override
  81     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
  82         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
  83             .nearRtRicUrl(ricConfig.baseUrl()) //
  84             .policyTypeId(policyTypeId) //
  85             .build();
  86         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  87         logger.debug("POST getPolicyType inputJsonString = {}", inputJsonString);
  88
  89         return restClient
  90             .postWithAuthHeader(URL_PREFIX + "getPolicyType", inputJsonString, a1ControllerUsername,
  91                 a1ControllerPassword) //
  92             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type")) //
  93             .flatMap(JsonHelper::extractPolicySchema);
  94     }
  95
  96     @Override
  97     public Mono<String> putPolicy(Policy policy) {
  98         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
  99             .nearRtRicUrl(ricConfig.baseUrl()) //
 100             .policyTypeId(policy.type().name()) //
 101             .policyId(policy.id()) //
 102             .policy(policy.json()) //
 103             .build();
 104         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 105         logger.debug("POST putPolicy inputJsonString = {}", inputJsonString);
 106
 107         return restClient
 108             .postWithAuthHeader(URL_PREFIX + "putPolicy", inputJsonString, a1ControllerUsername, a1ControllerPassword)
 109             .flatMap(response -> JsonHelper.getValueFromResponse(response, "returned-policy")) //
 110             .flatMap(JsonHelper::validateJson);
 111     }
 112
 113     @Override
 114     public Mono<String> deletePolicy(Policy policy) {
 115         return deletePolicyById(policy.id());
 116     }
 117
 118     @Override
 119     public Flux<String> deleteAllPolicies() {
 120         return getPolicyIds() //
 121             .flatMap(this::deletePolicyById); //
 122     }
 123
 124     @Override
 125     public Mono<A1ProtocolType> getProtocolVersion() {
 126         return getPolicyTypeIdentities() //
 127             .flatMap(x -> Mono.just(A1ProtocolType.SDNC_OSC));
 128     }
 129
 130     @Override
 131     public Mono<String> getPolicyStatus(Policy policy) {
 132         return Mono.error(new Exception("Status not implemented in the SDNC controller"));
 133     }
 134
 135     private Flux<String> getPolicyIds() {
 136         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
 137             .nearRtRicUrl(ricConfig.baseUrl()) //
 138             .build();
 139         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 140         logger.debug("POST getPolicyIdentities inputJsonString = {}", inputJsonString);
 141
 142         return restClient
 143             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyIdentities", inputJsonString, a1ControllerUsername,
 144                 a1ControllerPassword) //
 145             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-id-list")) //
 146             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 147     }
 148
 149     private Mono<String> deletePolicyById(String policyId) {
 150         SdncOscAdapterInput inputParams = ImmutableSdncOscAdapterInput.builder() //
 151             .nearRtRicUrl(ricConfig.baseUrl()) //
 152             .policyId(policyId) //
 153             .build();
 154
 155         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 156         logger.debug("POST deletePolicy inputJsonString = {}", inputJsonString);
 157
 158         return restClient.postWithAuthHeader(URL_PREFIX + "deletePolicy", inputJsonString, a1ControllerUsername,
 159             a1ControllerPassword);
 160     }
 161 }