[LOG4J2-2760] RollingFileAppender with DirectWriteRolloverStrategy does not work with HtmlLayout

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.13.1
• Component/s: Appenders
• Assignee: Unassigned
• Reporter: Christoph Kaser
• Created: 15/Jan/20 10:17
• Updated: 15/Feb/20 22:39
• Resolved: 10/Feb/20 16:11

Description

When I try to use the RollingFileAppender with a DirectWriteRolloverStrategy and a HtmlLayout, I encountered a bug: The first file that is written does not start with the header from the layout.

If I try to specify append=false to work around that issue, I encountered a NullPointerException instead:

java.lang.NullPointerException
 at java.io.File.<init>(File.java:277)
 at org.apache.logging.log4j.core.appender.FileManager.createOutputStream(FileManager.java:140)
 at org.apache.logging.log4j.core.appender.OutputStreamManager.getOutputStream(OutputStreamManager.java:166)
 at org.apache.logging.log4j.core.appender.OutputStreamManager.<init>(OutputStreamManager.java:95)
 at org.apache.logging.log4j.core.appender.FileManager.<init>(FileManager.java:72)
 at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.<init>(RollingFileManager.java:98)
 at org.apache.logging.log4j.core.appender.rolling.RollingFileManager$RollingFileManagerFactory.createManager(RollingFileManager.java:627)
 at org.apache.logging.log4j.core.appender.rolling.RollingFileManager$RollingFileManagerFactory.createManager(RollingFileManager.java:588)
 at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:113)
 at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:114)
 at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.getFileManager(RollingFileManager.java:163)
 at org.apache.logging.log4j.core.appender.RollingFileAppender$Builder.build(RollingFileAppender.java:142)

I will create a PR in github with a TestCase and a fix and attach it to this bug report.

Issue Links

• is duplicated by: LOG4J2-2778 Using header in PatternLayout with DirectWriteRolloverStrategy
• links to: GitHub Pull Request #332