是否动态更改日志添加器得筛选器？

Question

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
        <pattern>%d [%X{traceId}] [%thread] %-5level %logger{36} %marker - %msg%n</pattern>
    </encoder>
</appender>

<!-- Root Config -->
<root level="${log_level:-INFO}">
    <appender-ref ref="ASYNC-SERVICE"/>
    <appender-ref ref="STDOUT"/>
</root>

def setLogLevel(value: Level, loggerName: String = org.slf4j.Logger.ROOT_LOGGER_NAME) = {
  val logger = LoggerFactory.getLogger(loggerName).asInstanceOf[Logger]

  logger.setLevel(LogbackLevel.valueOf(value.toString))
}

我试着在附加程序上操作级别过滤器，但似乎没有太大作用

Answer 1

我最后做的是让根级别始终在Debug处日志,并为每个附加程序提供阈值过滤器：

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
     <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
    </filter>
    <encoder>
        <pattern>%d [%X{traceId}] [%thread] %-5level %logger{36} %marker - %msg%n</pattern>
    </encoder>
</appender>

<!-- Root Config -->
<root level="${log_level:-DEBUG}">
    <appender-ref ref="ASYNC-SERVICE"/>
    <appender-ref ref="STDOUT"/>
</root>

然后我使用groovy logback api中的ConfigurationDelegate类来查询附加项

 val context = LoggerFactory.getILoggerFactory.asInstanceOf[LoggerContext] 

 val configuration = {
    val delegate = new ConfigurationDelegate
    delegate.setContext(context)
    delegate
  }

  /**
   * Sets the log level for a particular appender
   * @param value
   * @param appenderName
   */
  def setAppenderLevel(value: Level, appenderName: String) = {
    appenders.find(_.getName == appenderName) match {
      case Some(appender) =>
        val filters = appender.getCopyOfAttachedFiltersList

        filters.find(_.isInstanceOf[ThresholdFilter]).foreach(m => m.asInstanceOf[ThresholdFilter].setLevel(value.toString))
      case None =>
    }
  }

我查找了阈值筛选器并手工设置了值。