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 public class SdncOnapA1Client implements A1Client {
  36     private static final String URL_PREFIX = "/A1-ADAPTER-API:";
  37
  38     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  39
  40     private final String a1ControllerUsername;
  41     private final String a1ControllerPassword;
  42     private final RicConfig ricConfig;
  43     private final AsyncRestClient restClient;
  44
  45     public SdncOnapA1Client(RicConfig ricConfig, String baseUrl, String username, String password) {
  46         this(ricConfig, username, password, new AsyncRestClient(baseUrl + "/restconf/operations"));
  47         if (logger.isDebugEnabled()) {
  48             logger.debug("SdncOnapA1Client for ric: {}, a1ControllerBaseUrl: {}", ricConfig.name(), baseUrl);
  49         }
  50     }
  51
  52     public SdncOnapA1Client(RicConfig ricConfig, String username, String password, AsyncRestClient restClient) {
  53         this.ricConfig = ricConfig;
  54         this.a1ControllerUsername = username;
  55         this.a1ControllerPassword = password;
  56         this.restClient = restClient;
  57     }
  58
  59     @Override
  60     public Mono<List<String>> getPolicyTypeIdentities() {
  61         return getPolicyTypeIds() //
  62             .collectList();
  63     }
  64
  65     @Override
  66     public Mono<List<String>> getPolicyIdentities() {
  67         return getPolicyTypeIds() //
  68             .flatMap(this::getPolicyIdentitiesByType) //
  69             .collectList();
  70     }
  71
  72     @Override
  73     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
  74         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
  75             .nearRtRicId(ricConfig.baseUrl()) //
  76             .policyTypeId(policyTypeId) //
  77             .build();
  78         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  79         logger.debug("POST getPolicyType inputJsonString = {}", inputJsonString);
  80
  81         return restClient
  82             .postWithAuthHeader(URL_PREFIX + "getPolicyType", inputJsonString, a1ControllerUsername,
  83                 a1ControllerPassword) //
  84             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type")) //
  85             .flatMap(JsonHelper::extractPolicySchema);
  86     }
  87
  88     @Override
  89     public Mono<String> putPolicy(Policy policy) {
  90         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
  91             .nearRtRicId(ricConfig.baseUrl()) //
  92             .policyTypeId(policy.type().name()) //
  93             .policyInstanceId(policy.id()) //
  94             .policyInstance(policy.json()) //
  95             .properties(new ArrayList<String>()) //
  96             .build();
  97
  98         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  99         logger.debug("POST putPolicy inputJsonString = {}", inputJsonString);
 100
 101         return restClient.postWithAuthHeader(URL_PREFIX + "createPolicyInstance", inputJsonString, a1ControllerUsername,
 102             a1ControllerPassword);
 103     }
 104
 105     @Override
 106     public Mono<String> deletePolicy(Policy policy) {
 107         return deletePolicyByTypeId(policy.type().name(), policy.id());
 108     }
 109
 110     @Override
 111     public Flux<String> deleteAllPolicies() {
 112         return getPolicyTypeIds() //
 113             .flatMap(this::deletePoliciesForType); //
 114     }
 115
 116     @Override
 117     public Mono<A1ProtocolType> getProtocolVersion() {
 118         return getPolicyTypeIdentities() //
 119             .flatMap(notUsed -> Mono.just(A1ProtocolType.SDNC_ONAP));
 120     }
 121
 122     @Override
 123     public Mono<String> getPolicyStatus(Policy policy) {
 124         return Mono.error(new Exception("Status not implemented in the controller"));
 125     }
 126
 127     private Flux<String> getPolicyTypeIds() {
 128         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 129             .nearRtRicId(ricConfig.baseUrl()) //
 130             .build();
 131         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 132         logger.debug("POST getPolicyTypeIdentities inputJsonString = {}", inputJsonString);
 133
 134         return restClient
 135             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyTypes", inputJsonString, a1ControllerUsername,
 136                 a1ControllerPassword) //
 137             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type-id-list")) //
 138             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 139     }
 140
 141     private Flux<String> getPolicyIdentitiesByType(String policyTypeId) {
 142         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 143             .nearRtRicId(ricConfig.baseUrl()) //
 144             .policyTypeId(policyTypeId) //
 145             .build();
 146         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 147         logger.debug("POST getPolicyIdentities inputJsonString = {}", inputJsonString);
 148
 149         return restClient
 150             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyInstances", inputJsonString, a1ControllerUsername,
 151                 a1ControllerPassword) //
 152             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-instance-id-list")) //
 153             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 154     }
 155
 156     private Flux<String> deletePoliciesForType(String typeId) {
 157         return getPolicyIdentitiesByType(typeId) //
 158             .flatMap(policyId -> deletePolicyByTypeId(typeId, policyId)); //
 159     }
 160
 161     private Mono<String> deletePolicyByTypeId(String policyTypeId, String policyId) {
 162         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 163             .nearRtRicId(ricConfig.baseUrl()) //
 164             .policyTypeId(policyTypeId) //
 165             .policyInstanceId(policyId) //
 166             .build();
 167         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 168         logger.debug("POST deletePolicy inputJsonString = {}", inputJsonString);
 169
 170         return restClient.postWithAuthHeader("/A1-ADAPTER-API:deletePolicyInstance", inputJsonString,
 171             a1ControllerUsername, a1ControllerPassword);
 172     }
 173 }