Skip to content

logback-rolling-policy.md

Latest commit

 

History

History
87 lines (70 loc) · 2.83 KB

logback-rolling-policy.md

File metadata and controls

87 lines (70 loc) · 2.83 KB

Logback Rolling Policy

시간, 사이즈로 로그 파일 나누기

1.1.7 이전 버전:

예전에는 TimeBasedRollingPolicy에 SizeAndTimeBasedFNATP를 적용해서 maxFileSize 옵션을 적용했었다. 현재 이 방법은 공식 문서에서 삭제되었으나, 작동은 한다. %d와 %i는 필수로 지정해야 한다.

...
  <appender name="ROLLING" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>mylog.txt</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>mylog-%d{yyyy-MM-dd}.%i.txt</fileNamePattern>
      <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
        <maxFileSize>10MB</maxFileSize>
      </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>
  </appender>
...

현재:

SizeAndTimeBasedRollingPolicy에 maxFileSize 옵션으로 각 파일당 사이즈를 지정하도록 수정되었다. SizeAndtimeBasedRollingPolicy.java를 보면 SizeAndTimeBasedFNATP를 변수로 가지고 있다.

<configuration>
  <appender name="ROLLING" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>mylog.txt</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
      <!-- rollover daily -->
      <fileNamePattern>mylog-%d{yyyy-MM-dd}.%i.txt</fileNamePattern>
       <!-- each file should be at most 100MB, keep 60 days worth of history, but at most 20GB -->
       <maxFileSize>100MB</maxFileSize>
       <maxHistory>60</maxHistory>
       <totalSizeCap>20GB</totalSizeCap>
    </rollingPolicy>
    <encoder>
      <pattern>%msg%n</pattern>
    </encoder>
  </appender>


  <root level="DEBUG">
    <appender-ref ref="ROLLING" />
  </root>

</configuration>

10분 단위로 롤링하기

<appender name="TenMinuteRollingFileAppender" class="com.raegon.logger.TenMinuteAppender">
    <file>server.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <pattern>%msg%n</pattern>
    </encoder>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <fileNamePattern>server.log.%d{yyyyMMddHHmm}</fileNamePattern>
    </rollingPolicy>
</appender>

<root level="INFO">
    <appender-ref ref="STDOUT"/>
    <appender-ref ref="TenMinuteRollingFileAppender"/>
</root>
@Slf4j
public class TenMinuteAppender<E> extends RollingFileAppender<E> {

    private static LocalDateTime start = LocalDateTime.now();

    @Override
    public void rollover() {
        LocalDateTime now = LocalDateTime.now();
        if(now.isAfter(start.plusMinutes(10))) {
            start = now;
            super.rollover();
        }
    }

}