로그 남기기 1

package com.general.gen.filters;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;
import org.springframework.util.StreamUtils;
import org.springframework.web.filter.OncePerRequestFilter;
import org.springframework.web.util.ContentCachingResponseWrapper;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.List;
import java.util.UUID;

@Component
public class LoggingFilter extends OncePerRequestFilter {
    protected static final Logger log = LoggerFactory.getLogger(LoggingFilter.class);

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
        MDC.put("traceId", UUID.randomUUID().toString());
        if (isAsyncDispatch(request)) {
            filterChain.doFilter(request, response);
        } else {
            doFilterWrapped(new RequestWrapper(request), new ResponseWrapper(response), filterChain);
        }
        MDC.clear();
    }

    protected void doFilterWrapped(RequestWrapper request, ContentCachingResponseWrapper response, FilterChain filterChain) throws ServletException, IOException {
        try {
            logRequest(request);
            filterChain.doFilter(request, response);
        } finally {
            logResponse(response);
            response.copyBodyToResponse();
        }
    }

    private static void logRequest(RequestWrapper request) throws IOException {
        String queryString = request.getQueryString();
        log.info("Request : {} uri=[{}] content-type=[{}] ip=[{}]",
                request.getMethod(),
                queryString == null ? request.getRequestURI() : request.getRequestURI() + queryString,
                request.getContentType(),
                request.getRemoteAddr()
        );

        logPayload("Request", request.getContentType(), request.getInputStream());
    }

    private static void logResponse(ContentCachingResponseWrapper response) throws IOException {
        logPayload("Response", response.getContentType(), response.getContentInputStream());
    }

    private static void logPayload(String prefix, String contentType, InputStream inputStream) throws IOException {
        boolean visible = isVisible(MediaType.valueOf(contentType == null ? "application/json" : contentType));
        if (visible) {
            byte[] content = StreamUtils.copyToByteArray(inputStream);
            if (content.length > 0) {
                String contentString = new String(content);
                log.info("{} Payload: {}", prefix, contentString);
            }
        } else {
            log.info("{} Payload: Binary Content", prefix);
        }
    }

    private static boolean isVisible(MediaType mediaType) {
        final List<MediaType> VISIBLE_TYPES = Arrays.asList(
                MediaType.valueOf("text/*"),
                MediaType.APPLICATION_FORM_URLENCODED,
                MediaType.APPLICATION_JSON,
                MediaType.APPLICATION_XML,
                MediaType.valueOf("application/*+json"),
                MediaType.valueOf("application/*+xml"),
                MediaType.MULTIPART_FORM_DATA
        );

        return VISIBLE_TYPES.stream()
                .anyMatch(visibleType -> visibleType.includes(mediaType));
    }
}

package com.general.gen.filters;

import org.springframework.util.StreamUtils;

import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

public class RequestWrapper extends HttpServletRequestWrapper {

    private byte[] cachedInputStream;

    public RequestWrapper(HttpServletRequest request) throws IOException {
        super(request);
        InputStream requestInputStream = request.getInputStream();
        this.cachedInputStream = StreamUtils.copyToByteArray(requestInputStream);
    }

    @Override
    public ServletInputStream getInputStream() {
        return new ServletInputStream() {
            private InputStream cachedBodyInputStream = new ByteArrayInputStream(cachedInputStream);

            @Override
            public boolean isFinished() {
                try {
                    return cachedBodyInputStream.available() == 0;
                } catch (IOException e) {
                    e.printStackTrace();
                }
                return false;
            }

            @Override
            public boolean isReady() {
                return true;
            }

            @Override
            public void setReadListener(ReadListener readListener) {
                throw new UnsupportedOperationException();
            }

            @Override
            public int read() throws IOException {
                return cachedBodyInputStream.read();
            }
        };
    }
}

package com.general.gen.filters;

import org.springframework.web.util.ContentCachingResponseWrapper;

import javax.servlet.http.HttpServletResponse;

public class ResponseWrapper extends ContentCachingResponseWrapper {
    public ResponseWrapper(HttpServletResponse response) {
        super(response);
    }
}

 

 

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

    <!--로그 파일 저장 위치-->
    <property name="LOGS_PATH" value="./logs"/>

    <!--    ‘fileAppender’는 RollingFileAppender 클래스를 이용해서 특정 파일에 로그를 출력한다-->
    <appender name="DAILY_ROLLING_FILE_APPENDER" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOGS_PATH}/logback.log</file>
        <encoder>
            <pattern>
                %d{yyyy-MM-dd HH:mm:ss.S} [%thread] [traceId=%X{traceId}] %-5level %logger{36}.%M - %msg%n
            </pattern>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOGS_PATH}/logback.%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <!-- or whenever the file size reaches 100MB -->
                <maxFileSize>100MB</maxFileSize>
                <!-- kb, mb, gb -->
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
    </appender>


<!--    ‘consoleAppender’는 ConsoleAppender 클래스를 이용해서 콘솔에 로그를 출력한다.-->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{HH:mm} %-5level %logger{36} - %msg%n</Pattern>
        </layout>
    </appender>
    <appender name="SAMPLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.S} [%thread] [traceId=%X{traceId}] %-5level %logger{36}.%M - %msg%n</pattern>
        </encoder>
    </appender>

    <springProfile name="!(dev | prod)">
        <root level="info">
            <appender-ref ref="DAILY_ROLLING_FILE_APPENDER"/>
        </root>
    </springProfile>

<!--    <logger name="com.general.gen" level="DEBUG">-->
<!--        <appender-ref ref="SAMPLE" />-->
<!--    </logger>-->
<!--    <logger name="com.general.gen" level="INFO">-->
<!--        <appender-ref ref="DAILY_ROLLING_FILE_APPENDER" />-->
<!--    </logger>-->
<!--    <root level="INFO">-->
<!--        <appender-ref ref="STDOUT" />-->
<!--        <appender-ref ref="DAILY_ROLLING_FILE_APPENDER" />-->
<!--    </root>-->
</configuration>

<!--        로그 파일 생성 위치(리눅스): /var/log/tomcat9/-->
<!--        로그 파일 생성 위치(개발환경): 프로젝트 루트/logs-->