[SpringBoot3 + Log4j2] Routing 활용하여 요청별 로그파일 생성

1.  gradle 설정

spring-boot-stater-logging exclude 처리

spring-boot-stater-log4j2 추가

plugins {
    id 'java'
    id 'org.springframework.boot' version '3.1.2'
    id 'io.spring.dependency-management' version '1.1.2'
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'

java {
    sourceCompatibility = '17'
}

configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
    all {
        exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
    }
}

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-log4j2'
    compileOnly 'org.projectlombok:lombok'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    annotationProcessor 'org.projectlombok:lombok'

}

tasks.named('test') {
    useJUnitPlatform()
}

 

 

2. log4j2.xml 설정

jobId를 기준으로 로그파일 생성되게끔 Routing Appender 생성

<Configuration status="INFO">
    <Properties>
        <Property name="LOG_FORMAT">%d{yyyy-MMM-dd HH:mm:ss a} [%t] %-5level %logger{36} - %msg%n</Property>
        <Property name="baseDir">/Users/beomun-park/IdeaProjects/logs</Property>
    </Properties>
    
    <Appenders>
        <Routing name="Routing">
            <Routes pattern="$${ctx:jobId}">
                <Route>
                    <RollingFile name="Rolling-${ctx:jobId}"
                    fileName="${baseDir}/thread-${ctx:jobId}.log"
                    filePattern="${baseDir}/thread-${ctx:jobId}.log.%d{yyyy-MM-dd}">
                        <PatternLayout pattern="${LOG_FORMAT}"/>
                        <TimeBasedTriggeringPolicy/>
                    </RollingFile>
                </Route>
            </Routes>
        </Routing>
        <Console name="Console" target="SYSTEM_OUT" follow="true">
            <PatternLayout pattern="%-5level [%F:%L]- %msg%n" />
        </Console>
    </Appenders>
    <Loggers>

        <logger name="org.springframework" level="info" additivity="false" >
            <AppenderRef ref="Console" />
        </logger>

        <Root level="INFO">
            <AppenderRef ref="Routing"/>
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>

 

3. ThreadContext 에 jobId 입력 

요청마다 jobId를 부여하여 log를 분리

    public static void main(String[] args) {
        SpringApplication.run(CustomAppenderSampleApplication.class, args);

        ThreadContext.put("jobId", "jobId1");
        log.info("thread1 log");

        ThreadContext.put("jobId", "jobId2");
        log.info("thread2 log");


    }

 

4. 결과

$ ls
thread-jobId1.log       thread-jobId2.log