com.netflix.spinnaker.gate.interceptors.RequestLoggingInterceptor.java Source code

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Here is the source code for com.netflix.spinnaker.gate.interceptors.RequestLoggingInterceptor.java

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/*
 * Copyright 2017 Netflix, Inc.
 *
 * 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.
 */
package com.netflix.spinnaker.gate.interceptors;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import org.springframework.web.util.ContentCachingResponseWrapper;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class RequestLoggingInterceptor extends HandlerInterceptorAdapter {

    private Logger log = LoggerFactory.getLogger(getClass());

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
            Exception ex) throws Exception {
        // 127.0.0.1 "GET /limecat.jpg HTTP/1.0" 200 2326
        log.debug(String.format("%s \"%s %s %s\" %d %d", sourceIpAddress(request), request.getMethod(),
                getRequestEndpoint(request), request.getProtocol(), response.getStatus(),
                getResponseSize(response)));
    }

    private static String sourceIpAddress(HttpServletRequest request) {
        String ip = request.getHeader("X-FORWARDED-FOR");
        if (ip == null) {
            return request.getRemoteAddr();
        }
        return ip;
    }

    private static String getRequestEndpoint(HttpServletRequest request) {
        String endpoint = request.getRequestURI();
        if (request.getQueryString() != null) {
            return endpoint + "?" + request.getQueryString();
        }
        return endpoint;
    }

    private static int getResponseSize(HttpServletResponse response) {
        if (response instanceof ContentCachingResponseWrapper) {
            return ((ContentCachingResponseWrapper) response).getContentAsByteArray().length;
        }
        return -1;
    }

}