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

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * DCAEGEN2-SERVICES-SDK
   4  * ================================================================================
   5  * Copyright (C) 2018 NOKIA Intellectual Property. 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
  21 package org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.service.consumer;
  22
  23 import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.RESPONSE_CODE;
  24 import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.SERVICE_NAME;
  25
  26 import io.netty.handler.ssl.SslContext;
  27 import javax.net.ssl.SSLException;
  28 import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapConsumerConfiguration;
  29 import org.onap.dcaegen2.services.sdk.rest.services.ssl.SslFactory;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import org.slf4j.MDC;
  33 import org.springframework.http.client.reactive.ClientHttpConnector;
  34 import org.springframework.http.client.reactive.ReactorClientHttpConnector;
  35 import org.springframework.web.reactive.function.client.ExchangeFilterFunction;
  36 import org.springframework.web.reactive.function.client.WebClient;
  37 import reactor.core.publisher.Mono;
  38 import reactor.netty.http.client.HttpClient;
  39
  40 /**
  41  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 7/4/18
  42  */
  43 public class DMaaPReactiveWebClientFactory {
  44
  45     private final Logger logger = LoggerFactory.getLogger(this.getClass());
  46
  47     private final SslFactory sslFactory;
  48
  49     public DMaaPReactiveWebClientFactory() {
  50         this(new SslFactory());
  51     }
  52
  53     DMaaPReactiveWebClientFactory(SslFactory sslFactory) {
  54         this.sslFactory = sslFactory;
  55     }
  56
  57     /**
  58      * Construct Reactive WebClient with appropriate settings.
  59      *
  60      * @return WebClient
  61      */
  62     public WebClient build(DmaapConsumerConfiguration consumerConfiguration) throws SSLException {
  63         SslContext sslContext = createSslContext(consumerConfiguration);
  64         ClientHttpConnector reactorClientHttpConnector = new ReactorClientHttpConnector(
  65                 HttpClient.create().secure(sslContextSpec -> sslContextSpec.sslContext(sslContext)));
  66         return WebClient.builder()
  67                 .clientConnector(reactorClientHttpConnector)
  68                 .filter(logRequest())
  69                 .filter(logResponse())
  70                 .build();
  71     }
  72
  73     private SslContext createSslContext(DmaapConsumerConfiguration consumerConfiguration) throws SSLException {
  74         if (consumerConfiguration.enableDmaapCertAuth()) {
  75             return sslFactory.createSecureContext(
  76                     consumerConfiguration.keyStorePath(), consumerConfiguration.keyStorePasswordPath(),
  77                     consumerConfiguration.trustStorePath(), consumerConfiguration.trustStorePasswordPath()
  78             );
  79         }
  80         return sslFactory.createInsecureContext();
  81     }
  82
  83     private ExchangeFilterFunction logResponse() {
  84         return ExchangeFilterFunction.ofResponseProcessor(clientResponse -> {
  85             MDC.put(RESPONSE_CODE, String.valueOf(clientResponse.statusCode()));
  86             logger.info("Response Status {}", clientResponse.statusCode());
  87             MDC.remove(RESPONSE_CODE);
  88             return Mono.just(clientResponse);
  89         });
  90     }
  91
  92     private ExchangeFilterFunction logRequest() {
  93         return ExchangeFilterFunction.ofRequestProcessor(clientRequest -> {
  94             MDC.put(SERVICE_NAME, String.valueOf(clientRequest.url()));
  95             logger.info("Request: {} {}", clientRequest.method(), clientRequest.url());
  96             clientRequest.headers()
  97                 .forEach((name, values) -> values.forEach(value -> logger.info("{}={}", name, value)));
  98             MDC.remove(SERVICE_NAME);
  99             return Mono.just(clientRequest);
 100         });
 101     }
 102
 103 }