How to configure log4j to only keep log files for the last seven days?

Question

I have the following logging problem with several Java applications using log4j for logging:

I want log files to be rotated daily, like

Answer 1

I came across this appender here that does what you want, it can be configured to keep a specific number of files that have been rolled over by date.

Download: http://www.simonsite.org.uk/download.htm

Example (groovy):

new TimeAndSizeRollingAppender(name: 'timeAndSizeRollingAppender',
   file: 'logs/app.log', datePattern: '.yyyy-MM-dd',
   maxRollFileCount: 7, compressionAlgorithm: 'GZ',
   compressionMinQueueSize: 2,
   layout: pattern(conversionPattern: "%d [%t] %-5p %c{2} %x - %m%n"))