Question

我希望能够在logback中动态更改单个appender的过滤级别

例如，如果我有

<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>

我如何在运行时更改STDOUT appender以允许调试vs信息？

我可以轻松地全局更改根级别：

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))
}

但是我真的想控制哪个appender动态地获得哪个级别。

我尝试在appender上操作级别过滤器，但这似乎没有做太多

Answer 1

我最终做的是让根级别始终记录在Debug并为每个appender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>

然后我使用了groovy logback api中的ConfigurationDelegate类来查询appenders

 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 =>
    }
  }

我查找了阈值过滤器并手动设置了值。

动态更改logback appender的过滤器？

1 个答案: