gerrit.onap Code Review - policy/clamp.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2022 Nordix Foundation.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.policy.clamp.acm.participant.a1pms.webclient;
  22
  23 import java.lang.invoke.MethodHandles;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.Objects;
  27 import java.util.function.Predicate;
  28 import lombok.RequiredArgsConstructor;
  29 import org.onap.policy.clamp.acm.participant.a1pms.exception.A1PolicyServiceException;
  30 import org.onap.policy.clamp.acm.participant.a1pms.models.A1PolicyServiceEntity;
  31 import org.onap.policy.clamp.acm.participant.a1pms.parameters.A1PmsParameters;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34 import org.springframework.http.HttpHeaders;
  35 import org.springframework.http.HttpMethod;
  36 import org.springframework.http.HttpStatus;
  37 import org.springframework.stereotype.Component;
  38 import org.springframework.web.reactive.function.client.WebClient;
  39 import org.springframework.web.reactive.function.client.WebClientResponseException;
  40 import reactor.core.publisher.Mono;
  41
  42 @Component
  43 @RequiredArgsConstructor
  44 public class AcA1PmsClient {
  45
  46     private final A1PmsParameters a1PmsParameters;
  47
  48     private static final Logger LOGGER = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  49
  50     /**
  51      * Get webclient for A1PMS.
  52      *
  53      * @return webClient
  54      */
  55     private WebClient getPmsClient() {
  56         return WebClient.builder().baseUrl(a1PmsParameters.getBaseUrl())
  57                        .defaultHeaders(httpHeaders -> httpHeaders.addAll(createHeaders())).build();
  58     }
  59
  60     /**
  61      * Get A1PMS health status.
  62      *
  63      * @return whether A1PMS is healthy
  64      */
  65     public boolean isPmsHealthy() {
  66         return Objects.equals(Boolean.TRUE,
  67                 getPmsClient().method(HttpMethod.GET).uri(a1PmsParameters.getEndpoints().getHealth())
  68                         .exchangeToMono(clientResponse -> Mono.just(clientResponse.statusCode().is2xxSuccessful()))
  69                         .block());
  70     }
  71
  72
  73     /**
  74      * Create service in A1PMS.
  75      * @param policyServiceEntities List of service entities
  76      * @throws A1PolicyServiceException Exception on creating service
  77      */
  78     public void createService(List<A1PolicyServiceEntity> policyServiceEntities) throws A1PolicyServiceException {
  79         policyServiceEntities.forEach(
  80                 a1PolicyServiceEntity -> getPmsClient().method(HttpMethod.PUT)
  81                                            .uri(a1PmsParameters.getEndpoints().getServices())
  82                                            .bodyValue(a1PolicyServiceEntity).retrieve()
  83                                            .onStatus(Predicate.isEqual(HttpStatus.OK),
  84                                                    clientResponse -> {
  85                                                        LOGGER.warn("Client {} already exists and the configuration "
  86                                                                            + "is updated",
  87                                                                a1PolicyServiceEntity.getClientId());
  88                                                        return Mono.empty();
  89                                                    })
  90                                            .toBodilessEntity()
  91                                            .onErrorResume(WebClientResponseException.class,
  92                                                    clientResponse -> Mono.error(new A1PolicyServiceException(
  93                                                                clientResponse.getStatusCode().value(),
  94                                                                "Error in creating policy service")))
  95                                            .block());
  96     }
  97
  98     /**
  99      * Delete service in A1PMS.
 100      * @param policyServiceEntities List of service entities
 101      * @throws A1PolicyServiceException Exception on deleting service
 102      */
 103     public void deleteService(List<A1PolicyServiceEntity> policyServiceEntities) throws A1PolicyServiceException {
 104         policyServiceEntities.forEach(
 105                 a1PolicyServiceEntity -> getPmsClient().method(HttpMethod.DELETE)
 106                                              .uri(a1PmsParameters.getEndpoints().getService(),
 107                                                      a1PolicyServiceEntity.getClientId())
 108                                              .bodyValue(a1PolicyServiceEntity).retrieve()
 109                                              .toBodilessEntity()
 110                                             .onErrorResume(WebClientResponseException.class,
 111                                                     clientResponse -> Mono.error(new A1PolicyServiceException(
 112                                                             clientResponse.getStatusCode().value(),
 113                                                             "Error in deleting policy service")))
 114                                              .block());
 115     }
 116
 117     /**
 118      * Prepare the Http headers to call A1PMS.
 119      *
 120      * @return httpHeaders
 121      */
 122     private HttpHeaders createHeaders() {
 123         var headers = new HttpHeaders();
 124         for (Map.Entry<String, String> entry : a1PmsParameters.getHeaders().entrySet()) {
 125             headers.add(entry.getKey(), entry.getValue());
 126         }
 127         return headers;
 128     }
 129 }