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<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration>
<!-- scan: 扫描配置文件是否有变动(默认1分钟1次) -->
<configuration scan="true">
    <!-- 包含配置logger的文件 -->
    <!--    <include file="config/logback-logger.xml"/>-->

    <!-- 引入变量属性文件 -->
    <!--    <variable file="config/logback-var.properties"/>-->

    <variable name="CONSOLE_LOG_PATTERN" value="%d{HH:mm:ss.SSS}[%5p]%m---%c%n"/>
    <variable name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd HH:mm:ss.SSS}[%5p]%m---%c %t%n"/>
    <variable name="LOG_FILE_NAME_PATTERN" value="logs/%d{yyyyMMdd}/%d{yyyyMMddHH}-%i.log.gz"/>
    <variable name="ERR_FILE_NAME_PATTERN" value="logs/%d{yyyyMMdd}/%d{yyyyMMddHH}-%i.err.gz"/>
    <variable name="ASYNC_QUEUE_SIZE" value="512"/>

    <!-- 引入需要用到的类 -->
    <import class="ch.qos.logback.classic.jul.LevelChangePropagator"/>
    <import class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"/>
    <import class="ch.qos.logback.core.ConsoleAppender"/>
    <import class="ch.qos.logback.core.rolling.RollingFileAppender"/>
    <import class="ch.qos.logback.classic.filter.ThresholdFilter"/>
    <import class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy"/>

    <!-- 优化jul转换的性能 -->
    <contextListener class="LevelChangePropagator">
        <!-- 重置jul的配置 -->
        <resetJUL>true</resetJUL>
    </contextListener>

    <!-- 输出到控制台 -->
    <appender name="console" class="ConsoleAppender">
        <encoder class="PatternLayoutEncoder">
            <pattern>${CONSOLE_LOG_PATTERN}</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <!-- 输出trace/debug/info/warn/error所有级别的日志到文件，按每小时或者超过5MB分割 -->
    <appender name="file-log" class="RollingFileAppender">
        <file>logs/current.log</file>
        <rollingPolicy class="SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_FILE_NAME_PATTERN}</fileNamePattern>
            <maxFileSize>5MB</maxFileSize>
        </rollingPolicy>
        <encoder class="PatternLayoutEncoder">
            <pattern>${FILE_LOG_PATTERN}</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <!-- 只输出warn/error级别的日志到文件，按每小时或者超过5MB分割 -->
    <appender name="file-err" class="RollingFileAppender">
        <file>logs/current.err</file>
        <rollingPolicy class="SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${ERR_FILE_NAME_PATTERN}</fileNamePattern>
            <maxFileSize>5MB</maxFileSize>
        </rollingPolicy>
        <encoder class="PatternLayoutEncoder">
            <pattern>${FILE_LOG_PATTERN}</pattern>
            <charset>UTF-8</charset>
        </encoder>
        <filter class="ThresholdFilter">
            <level>WARN</level>
        </filter>
    </appender>

    <!-- 异步文件日志输出 -->
    <appender name="async-file-log" class="ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold>0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>${ASYNC_QUEUE_SIZE}</queueSize>
        <!-- 添加附加的appender,最多只能添加一个 -->
        <appender-ref ref="file-log"/>
    </appender>

    <!-- 异步文件错误输出 -->
    <appender name="async-file-err" class="ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold>0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>${ASYNC_QUEUE_SIZE}</queueSize>
        <!-- 添加附加的appender,最多只能添加一个 -->
        <appender-ref ref="file-err"/>
    </appender>

    <root level="DEBUG">
        <appender-ref ref="console"/>
        <!--        <if condition='isDefined("log.async")&amp;&amp;property("log.async").equals("true")'>-->
        <!--            <then>-->
        <!--                <appender-ref ref="async-file-log"/>-->
        <!--                <appender-ref ref="async-file-err"/>-->
        <!--            </then>-->
        <!--            <else>-->
        <appender-ref ref="file-log"/>
        <appender-ref ref="file-err"/>
        <!--            </else>-->
        <!--        </if>-->
    </root>
</configuration>