Grasscutter/src/main/resources/logback.xml

<Configuration>
  <variable name="LOG_LEVEL" value="${LOG_LEVEL:-INFO}" />

  <appender name="STDOUT" class="emu.grasscutter.utils.JlineLogbackAppender">
    <encoder>
      <pattern>%d{HH:mm:ss} &lt;%highlight(%level):%gray(%class{0})&gt; %msg%n</pattern>
    </encoder>
  </appender>

  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>logs/latest.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>logs/log.%d{yyyy-MM-dd}_%d{HH}.log.gz</fileNamePattern>
      <maxHistory>24</maxHistory>
    </rollingPolicy>
    <encoder>
      <pattern>%d{yyyy-MM-dd'T'HH:mm:ss'Z'} &lt;%level:%class&gt; %m%n</pattern>
    </encoder>
  </appender>

  <appender name="SERVEREVENT" class="emu.grasscutter.utils.ServerLogEventAppender">
    <encoder>
      <pattern>%d{HH:mm:ss} &lt;%highlight(%level):%gray(%class{0})&gt; %msg%n</pattern>
    </encoder>
  </appender>

  <logger name="io.javalin" level="OFF" />
  <logger name="org.quartz" level="OFF" />
  <logger name="org.reflections" level="OFF" />
  <logger name="org.eclipse.jetty" level="OFF" />

  <logger name="emu.grasscutter" level="${LOG_LEVEL}" />

  <root level="INFO">
    <appender-ref ref="STDOUT" />
    <appender-ref ref="FILE" />
    <appender-ref ref="SERVEREVENT" />
  </root>
</Configuration>