policy-agent/src/main/java/org/oransc/policyagent/clients/SdncOnapA1Client.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.ArrayList;
  25 import java.util.List;
  26
  27 import org.oransc.policyagent.configuration.RicConfig;
  28 import org.oransc.policyagent.repository.Policy;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 import reactor.core.publisher.Flux;
  33 import reactor.core.publisher.Mono;
  34
  35 @SuppressWarnings("squid:S2629") // Invoke method(s) only conditionally
  36 public class SdncOnapA1Client implements A1Client {
  37     private static final String URL_PREFIX = "/A1-ADAPTER-API:";
  38
  39     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  40
  41     private final String a1ControllerUsername;
  42     private final String a1ControllerPassword;
  43     private final RicConfig ricConfig;
  44     private final AsyncRestClient restClient;
  45
  46     public SdncOnapA1Client(RicConfig ricConfig, String baseUrl, String username, String password) {
  47         this(ricConfig, username, password, new AsyncRestClient(baseUrl + "/restconf/operations"));
  48         logger.debug("SdncOnapA1Client for ric: {}, a1ControllerBaseUrl: {}", ricConfig.name(), baseUrl);
  49     }
  50
  51     public SdncOnapA1Client(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         return getPolicyTypeIds() //
  61             .collectList();
  62     }
  63
  64     @Override
  65     public Mono<List<String>> getPolicyIdentities() {
  66         return getPolicyTypeIds() //
  67             .flatMap(this::getPolicyIdentitiesByType) //
  68             .collectList();
  69     }
  70
  71     @Override
  72     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
  73         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
  74             .nearRtRicId(ricConfig.baseUrl()) //
  75             .policyTypeId(policyTypeId) //
  76             .build();
  77         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  78         logger.debug("POST getPolicyType inputJsonString = {}", inputJsonString);
  79
  80         return restClient
  81             .postWithAuthHeader(URL_PREFIX + "getPolicyType", inputJsonString, a1ControllerUsername,
  82                 a1ControllerPassword) //
  83             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type")) //
  84             .flatMap(JsonHelper::extractPolicySchema);
  85     }
  86
  87     @Override
  88     public Mono<String> putPolicy(Policy policy) {
  89         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
  90             .nearRtRicId(ricConfig.baseUrl()) //
  91             .policyTypeId(policy.type().name()) //
  92             .policyInstanceId(policy.id()) //
  93             .policyInstance(policy.json()) //
  94             .properties(new ArrayList<String>()) //
  95             .build();
  96
  97         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  98         logger.debug("POST putPolicy inputJsonString = {}", inputJsonString);
  99
 100         return restClient.postWithAuthHeader(URL_PREFIX + "createPolicyInstance", inputJsonString, a1ControllerUsername,
 101             a1ControllerPassword);
 102     }
 103
 104     @Override
 105     public Mono<String> deletePolicy(Policy policy) {
 106         return deletePolicyByTypeId(policy.type().name(), policy.id());
 107     }
 108
 109     @Override
 110     public Flux<String> deleteAllPolicies() {
 111         return getPolicyTypeIds() //
 112             .flatMap(this::deletePoliciesForType); //
 113     }
 114
 115     @Override
 116     public Mono<A1ProtocolType> getProtocolVersion() {
 117         return getPolicyTypeIdentities() //
 118             .flatMap(notUsed -> Mono.just(A1ProtocolType.SDNC_ONAP));
 119     }
 120
 121     @Override
 122     public Mono<String> getPolicyStatus(Policy policy) {
 123         return Mono.error(new Exception("Status not implemented in the controller"));
 124     }
 125
 126     private Flux<String> getPolicyTypeIds() {
 127         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 128             .nearRtRicId(ricConfig.baseUrl()) //
 129             .build();
 130         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 131         logger.debug("POST getPolicyTypeIdentities inputJsonString = {}", inputJsonString);
 132
 133         return restClient
 134             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyTypes", inputJsonString, a1ControllerUsername,
 135                 a1ControllerPassword) //
 136             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type-id-list")) //
 137             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 138     }
 139
 140     private Flux<String> getPolicyIdentitiesByType(String policyTypeId) {
 141         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 142             .nearRtRicId(ricConfig.baseUrl()) //
 143             .policyTypeId(policyTypeId) //
 144             .build();
 145         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 146         logger.debug("POST getPolicyIdentities inputJsonString = {}", inputJsonString);
 147
 148         return restClient
 149             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyInstances", inputJsonString, a1ControllerUsername,
 150                 a1ControllerPassword) //
 151             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-instance-id-list")) //
 152             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 153     }
 154
 155     private Flux<String> deletePoliciesForType(String typeId) {
 156         return getPolicyIdentitiesByType(typeId) //
 157             .flatMap(policyId -> deletePolicyByTypeId(typeId, policyId)); //
 158     }
 159
 160     private Mono<String> deletePolicyByTypeId(String policyTypeId, String policyId) {
 161         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 162             .nearRtRicId(ricConfig.baseUrl()) //
 163             .policyTypeId(policyTypeId) //
 164             .policyInstanceId(policyId) //
 165             .build();
 166         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 167         logger.debug("POST deletePolicy inputJsonString = {}", inputJsonString);
 168
 169         return restClient.postWithAuthHeader("/A1-ADAPTER-API:deletePolicyInstance", inputJsonString,
 170             a1ControllerUsername, a1ControllerPassword);
 171     }
 172 }