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/*-
* ============LICENSE_START======================================================================
* Copyright (C) 2018 NOKIA Intellectual Property, 2018-2019 Nordix Foundation. All rights reserved.
* ===============================================================================================
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
* ============LICENSE_END========================================================================
*/
package org.onap.dcaegen2.collectors.datafile.service;
import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.RESPONSE_CODE;
import static org.onap.dcaegen2.services.sdk.rest.services.model.logging.MdcVariables.SERVICE_NAME;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapCustomConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.springframework.http.HttpHeaders;
import org.springframework.web.reactive.function.client.ClientRequest;
import org.springframework.web.reactive.function.client.ClientResponse;
import org.springframework.web.reactive.function.client.ExchangeFilterFunction;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.reactive.function.client.WebClient.Builder;
import reactor.core.publisher.Mono;
/**
* Web client for the DMaaP MessageRouter.
*
* @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 7/4/18
*/
public class DmaapWebClient {
private static final Logger logger = LoggerFactory.getLogger(DmaapWebClient.class);
private String contentType;
/**
* Creating DmaapReactiveWebClient passing to them basic DmaapConfig.
*
* @param dmaapCustomConfig - configuration object
* @return DmaapReactiveWebClient
*/
public DmaapWebClient fromConfiguration(DmaapCustomConfig dmaapCustomConfig) {
this.contentType = dmaapCustomConfig.dmaapContentType();
return this;
}
/**
* Construct Reactive WebClient with appropriate settings.
*
* @return WebClient
*/
public WebClient build() {
Builder webClientBuilder = WebClient.builder() //
.defaultHeader(HttpHeaders.CONTENT_TYPE, contentType) //
.filter(getRequestFilter()) //
.filter(getResponseFilter());
return webClientBuilder.build();
}
private ExchangeFilterFunction getResponseFilter() {
return ExchangeFilterFunction.ofResponseProcessor(this::logResponse);
}
Mono<ClientResponse> logResponse(ClientResponse clientResponse) {
MDC.put(RESPONSE_CODE, String.valueOf(clientResponse.statusCode()));
logger.trace("Response Status {}", clientResponse.statusCode());
MDC.remove(RESPONSE_CODE);
return Mono.just(clientResponse);
}
private ExchangeFilterFunction getRequestFilter() {
return ExchangeFilterFunction.ofRequestProcessor(this::logRequest);
}
Mono<ClientRequest> logRequest(ClientRequest clientRequest) {
MDC.put(SERVICE_NAME, String.valueOf(clientRequest.url()));
logger.trace("Request: {} {}", clientRequest.method(), clientRequest.url());
logger.trace("HTTP request headers: {}", clientRequest.headers());
MDC.remove(SERVICE_NAME);
return Mono.just(clientRequest);
}
}
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