[jira] [Created] (LOG4J2-152) NullPointerException in (...)appender.rolling.helper.FileRenameAction if filePattern does not contain a parent directory

["Remko Popma (JIRA)" <ji...@apache.org>]

Remko Popma created LOG4J2-152:
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             Summary: NullPointerException in (...)appender.rolling.helper.FileRenameAction if filePattern does not contain a parent directory
                 Key: LOG4J2-152
                 URL: https://issues.apache.org/jira/browse/LOG4J2-152
             Project: Log4j 2
          Issue Type: New Feature
          Components: Appenders
    Affects Versions: 2.0-beta2
            Reporter: Remko Popma


{code}
ERROR StatusLogger Error in synchronous task java.lang.NullPointerException
	at org.apache.logging.log4j.core.appender.rolling.helper.FileRenameAction.execute(FileRenameAction.java:85)
	at org.apache.logging.log4j.core.appender.rolling.helper.FileRenameAction.execute(FileRenameAction.java:71)
	at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.rollover(RollingFileManager.java:140)
	at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.checkRollover(RollingFileManager.java:97)
	at atlas.infra.log.RollingRandomAccessFileAppender.append(RollingRandomAccessFileAppender.java:52)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:98)
	at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:335)
	at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:316)
	at org.apache.logging.log4j.core.Logger$PrivateConfig.logEvent(Logger.java:304)
{code}

To reproduce, in log4j2.xml, specify a filePattern without a parent directory:
  <appenders>
    <RollingFile name="RollingFile" fileName="logs/app.log"
                 filePattern="fileWithoutParentDir-%d{MM-dd-yyyy}-%i.log.gz">


This can be fixed
in org.apache.logging.log4j.core.appender.rolling.helper.FileRenameAction#execute(File, File, boolean) (line 85)
by changing (CURRENT)  if (!parent.exists()) {
to (FIX) if (parent != null && !parent.exists()) {

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