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Graylog
There is a newer version: 6.0.2
/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see .
 */
package org.graylog2.indexer.cluster.jest;

import org.apache.http.HttpException;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpResponseInterceptor;
import org.apache.http.RequestLine;
import org.apache.http.StatusLine;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpCoreContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;

public class RequestResponseLogger implements HttpResponseInterceptor {

    private static final Logger LOG = LoggerFactory.getLogger(RequestResponseLogger.class);

    private final Logger logger;

    public RequestResponseLogger() {
        this(LOG);
    }

    public RequestResponseLogger(Logger logger) {
        this.logger = logger;
    }

    @Override
    public void process(HttpResponse response, HttpContext context) throws HttpException, IOException {
        // Avoid work if TRACE is not enabled for this class
        if (logger.isTraceEnabled()) {
            final StatusLine statusLine = response.getStatusLine();
            final HttpHost targetHost = (HttpHost) context.getAttribute(HttpCoreContext.HTTP_TARGET_HOST);
            final HttpRequest httpRequest = (HttpRequest) context
                    .getAttribute(HttpCoreContext.HTTP_REQUEST);
            final RequestLine request = httpRequest.getRequestLine();
            logger.trace("[{} {}]: {} {}{}",
                    statusLine.getStatusCode(),
                    statusLine.getReasonPhrase(),
                    request.getMethod(),
                    targetHost.toURI(),
                    request.getUri()
            );
        }
    }
}