java - log4j2 中异步记录器的行为

Question

我的 log4j2.xml 包含同步和异步记录器。但是，当我使用异步记录器时，我只能打印第一个(共 5 个)log.debug 语句。

更新 3/28 -- 如果我介绍一个Thread.sleep(1)在 log.debug 调用之前..然后我能够获取通过 Async logger --> Rewrite Appender --> Rolling File Appender 记录的所有调试消息但不知道如何在没有 sleep 声明的情况下实现这一目标..

<Configuration status="WARN" packages="com.loggy.test">
  <Appenders>
    <Console name="Console" target="SYSTEM_OUT">
        <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
    </Console>

    <!--  Custom Appender Approach below -->
    <Stub name="myapp" fileName="/Users/loggy/logs/myapp.log"
                 filePattern="logs/myapp-%d{MM-dd-yyyy}.log.gz">
         <RegexFilter regex=".* special_log .*" onMatch="ACCEPT" onMismatch="DENY"/>
        <PatternLayout>
                    <pattern>%d %p %c{1.} [%t] %m%n</pattern>
          </PatternLayout>
          <TimeBasedTriggeringPolicy />
    </Stub>
    <!--  Custom Appender Approach above ends here -->

    <RollingFile name="RollingFile" fileName="/Users/loggy/logs/roll_file_app.log"
                 filePattern="logs/app-%d{MM-dd-yyyy}.log.gz">
           <PatternLayout>
                    <pattern>%d %p %c{1.} [%t] %m%n</pattern>
          </PatternLayout>
          <TimeBasedTriggeringPolicy />
    </RollingFile>


    <Rewrite name="Rewrite" ignoreExceptions = "false">
        <CookieAppenderPolicy cookieNeeded="true">
        </CookieAppenderPolicy>
        <AppenderRef ref="RollingFile"/>
    </Rewrite>
  </Appenders>
    <Loggers>
        <AsyncLogger name="com.loggy.test" level="debug" includeLocation="true">
            <AppenderRef ref="Rewrite" />
        </AsyncLogger>  
    <Root level="trace">
      <AppenderRef ref="Console"/>
    </Root>
  </Loggers>
</Configuration>




package com.loggy.test;

public class TestJ {
    @Inject
    public static void main(String[] args)
    {
        final Logger log4j = LogManager.getLogger(TestJ.class
                .getName());


        log4j.trace(" special_log Trace");

/* When Async logger is used, Only this line below gets printed to the Rewrite Appender and hence to the Rolling File appender */

        log4j.debug(" special_log debug published!");

    log4j.info(" special_log test info");


    log4j.debug(" sd_log test info");

   /* Following lines NEVER gets published to the rolling file appender or to the Rewrite Appender */

    log4j.debug(" special_log debug 2");

    log4j.debug(" special_log debug 3");

    log4j.debug(" special_log debug 4");

    log4j.debug(" special_log debug 5");

}

但是，如果我包含 <AppenderRef ref="Rewrite" />外<AsyncLogger>然后我就发布了所有的行。

关于应该对 log4j2.xml 进行哪些更改，以便在使用 AsyncLogger 时获得所有适当的行，有什么想法吗？

我还注意到 log4j2 包内有 AsyncLoggerConfig.java类代码永远不会到达 super.callAppenders(event); 。

我假设 super.callAppenders(event)必须为要调用的引用的附加程序工作吗？如何使这一行通过 log4j2.xml 执行？

/**  AsyncLoggerConfig.java
 * Passes on the event to a separate thread that will call
 * {@link #asyncCallAppenders(LogEvent)}.
 */
@Override
protected void callAppenders(final LogEvent event) {
    // populate lazily initialized fields
    event.getSource();

event.getThreadName();

// pass on the event to a separate thread
if (!helper.callAppendersFromAnotherThread(event)) {
    super.callAppenders(event);
}
}

<小时/>

Answer 1

此问题已在 Log4j 的更高版本中得到解决。解决方案是从版本 2.0-rc1 升级到最新版本(撰写本文时为 2.8.1)。