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 import org.oransc.policyagent.configuration.RicConfig;
  27 import org.oransc.policyagent.repository.Policy;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30 import reactor.core.publisher.Flux;
  31 import reactor.core.publisher.Mono;
  32
  33 public class SdncOnapA1Client implements A1Client {
  34     private static final String URL_PREFIX = "/A1-ADAPTER-API:";
  35
  36     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  37
  38     private final String a1ControllerUsername;
  39     private final String a1ControllerPassword;
  40     private final RicConfig ricConfig;
  41     private final AsyncRestClient restClient;
  42
  43     public SdncOnapA1Client(RicConfig ricConfig, String baseUrl, String username, String password) {
  44         this(ricConfig, username, password, new AsyncRestClient(baseUrl + "/restconf/operations"));
  45         if (logger.isDebugEnabled()) {
  46             logger.debug("SdnrOnapA1Client for ric: {}, a1ControllerBaseUrl: {}", ricConfig.name(), baseUrl);
  47         }
  48     }
  49
  50     public SdncOnapA1Client(RicConfig ricConfig, String username, String password, AsyncRestClient restClient) {
  51         this.ricConfig = ricConfig;
  52         this.a1ControllerUsername = username;
  53         this.a1ControllerPassword = password;
  54         this.restClient = restClient;
  55     }
  56
  57     @Override
  58     public Mono<List<String>> getPolicyTypeIdentities() {
  59         return getPolicyTypeIds() //
  60             .collectList();
  61     }
  62
  63     @Override
  64     public Mono<List<String>> getPolicyIdentities() {
  65         return getPolicyTypeIds() //
  66             .flatMap(this::getPolicyIdentitiesByType) //
  67             .collectList();
  68     }
  69
  70     @Override
  71     public Mono<String> getPolicyTypeSchema(String policyTypeId) {
  72         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
  73             .nearRtRicId(ricConfig.baseUrl()) //
  74             .policyTypeId(policyTypeId) //
  75             .build();
  76         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  77         logger.debug("POST getPolicyType inputJsonString = {}", inputJsonString);
  78
  79         return restClient
  80             .postWithAuthHeader(URL_PREFIX + "getPolicyType", inputJsonString, a1ControllerUsername,
  81                 a1ControllerPassword) //
  82             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type")) //
  83             .flatMap(JsonHelper::extractPolicySchema);
  84     }
  85
  86     @Override
  87     public Mono<String> putPolicy(Policy policy) {
  88         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
  89             .nearRtRicId(ricConfig.baseUrl()) //
  90             .policyTypeId(policy.type().name()) //
  91             .policyInstanceId(policy.id()) //
  92             .policyInstance(policy.json()) //
  93             .properties(new ArrayList<String>()) //
  94             .build();
  95
  96         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
  97         logger.debug("POST putPolicy inputJsonString = {}", inputJsonString);
  98
  99         return restClient.postWithAuthHeader(URL_PREFIX + "createPolicyInstance", inputJsonString,
 100             a1ControllerUsername, a1ControllerPassword);
 101     }
 102
 103     @Override
 104     public Mono<String> deletePolicy(Policy policy) {
 105         return deletePolicyByTypeId(policy.type().name(), policy.id());
 106     }
 107
 108     @Override
 109     public Flux<String> deleteAllPolicies() {
 110         return getPolicyTypeIds() //
 111             .flatMap(this::deletePoliciesForType); //
 112     }
 113
 114     @Override
 115     public Mono<A1ProtocolType> getProtocolVersion() {
 116         return getPolicyTypeIdentities() //
 117             .flatMap(notUsed -> Mono.just(A1ProtocolType.SDNC_ONAP));
 118     }
 119
 120     @Override
 121     public Mono<String> getPolicyStatus(Policy policy) {
 122         return Mono.error(new Exception("Status not implemented in the controller"));
 123     }
 124
 125     private Flux<String> getPolicyTypeIds() {
 126         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 127             .nearRtRicId(ricConfig.baseUrl()) //
 128             .build();
 129         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 130         logger.debug("POST getPolicyTypeIdentities inputJsonString = {}", inputJsonString);
 131
 132         return restClient
 133             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyTypes", inputJsonString, a1ControllerUsername,
 134                 a1ControllerPassword) //
 135             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-type-id-list")) //
 136             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 137     }
 138
 139     private Flux<String> getPolicyIdentitiesByType(String policyTypeId) {
 140         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 141             .nearRtRicId(ricConfig.baseUrl()) //
 142             .policyTypeId(policyTypeId) //
 143             .build();
 144         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 145         logger.debug("POST getPolicyIdentities inputJsonString = {}", inputJsonString);
 146
 147         return restClient
 148             .postWithAuthHeader("/A1-ADAPTER-API:getPolicyInstances", inputJsonString, a1ControllerUsername,
 149                 a1ControllerPassword) //
 150             .flatMap(response -> JsonHelper.getValueFromResponse(response, "policy-instance-id-list")) //
 151             .flatMapMany(JsonHelper::parseJsonArrayOfString);
 152     }
 153
 154     private Flux<String> deletePoliciesForType(String typeId) {
 155         return getPolicyIdentitiesByType(typeId) //
 156             .flatMap(policyId -> deletePolicyByTypeId(typeId, policyId)); //
 157     }
 158
 159     private Mono<String> deletePolicyByTypeId(String policyTypeId, String policyId) {
 160         SdncOnapAdapterInput inputParams = ImmutableSdncOnapAdapterInput.builder() //
 161             .nearRtRicId(ricConfig.baseUrl()) //
 162             .policyTypeId(policyTypeId) //
 163             .policyInstanceId(policyId) //
 164             .build();
 165         String inputJsonString = JsonHelper.createInputJsonString(inputParams);
 166         logger.debug("POST deletePolicy inputJsonString = {}", inputJsonString);
 167
 168         return restClient.postWithAuthHeader("/A1-ADAPTER-API:deletePolicyInstance", inputJsonString,
 169             a1ControllerUsername, a1ControllerPassword);
 170     }
 171 }