gerrit.onap Code Review - dcaegen2/services/sdk.git/blob

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * DCAEGEN2-SERVICES-SDK
   4  * ================================================================================
   5  * Copyright (C) 2019-2021 Nokia. All rights reserved.
   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 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl;
  21
  22 import com.google.gson.JsonObject;
  23 import org.jetbrains.annotations.NotNull;
  24 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpMethod;
  25 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.HttpResponse;
  26 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.ImmutableHttpRequest;
  27 import org.onap.dcaegen2.services.sdk.rest.services.adapters.http.RxHttpClient;
  28 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient;
  29 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import reactor.core.publisher.Mono;
  33
  34 import java.net.InetSocketAddress;
  35 import java.net.MalformedURLException;
  36 import java.net.URL;
  37
  38 public class CbsClientRest implements CbsClient {
  39     private static final Logger LOGGER = LoggerFactory.getLogger(CbsClientRest.class);
  40     private final RxHttpClient httpClient;
  41     private final String serviceName;
  42     private final InetSocketAddress cbsAddress;
  43     private final String protocol;
  44
  45     public CbsClientRest(RxHttpClient httpClient, String serviceName, InetSocketAddress cbsAddress, String protocol) {
  46         this.httpClient = httpClient;
  47         this.serviceName = serviceName;
  48         this.cbsAddress = cbsAddress;
  49         this.protocol = protocol;
  50     }
  51
  52     @Override
  53     public @NotNull Mono<JsonObject> get(CbsRequest request) {
  54         return Mono.fromCallable(() -> constructUrl(request).toString())
  55                 .doOnNext(this::logRequestUrl)
  56                 .map(url -> ImmutableHttpRequest.builder()
  57                         .method(HttpMethod.GET)
  58                         .url(url)
  59                         .diagnosticContext(request.diagnosticContext())
  60                         .build())
  61                 .flatMap(httpClient::call)
  62                 .doOnNext(HttpResponse::throwIfUnsuccessful)
  63                 .map(resp -> resp.bodyAsJson(JsonObject.class))
  64                 .map(CbsClientEnvironmentParsing::processEnvironmentVariables)
  65                 .doOnNext(this::logCbsResponse);
  66     }
  67
  68     private void logRequestUrl(String url) {
  69         LOGGER.debug("Calling {} for configuration", url);
  70     }
  71
  72     private void logCbsResponse(JsonObject json) {
  73         LOGGER.info("Got successful response from Config Binding Service");
  74         LOGGER.debug("CBS response: {}", json);
  75     }
  76
  77     private URL constructUrl(CbsRequest request) {
  78         try {
  79             return new URL(
  80                     this.protocol,
  81                     cbsAddress.getHostString(),
  82                     cbsAddress.getPort(),
  83                     request.requestPath().getForService(serviceName));
  84         } catch (MalformedURLException e) {
  85             throw new IllegalArgumentException("Invalid CBS URL", e);
  86         }
  87     }
  88 }