Rotating logs generated by a process that logs to stdin

I have a long running process, that writes its log file to stdout. I would like to save this output to different files, automatically maintain these files (like deleting/archiving the old ones), without restarting the main process.

On solution would be to send the output to a file (process > log.txt), and use logrotate on it, but logrotate needs to restart the program, which is not possible.

The other one is to pipe the output to cronolog (process | cronolog), but in this case older files won't get deleted / archived, meaning I have to make a program that will do the maintenance for me.

The best would be to be able to use both utilities, because with cronolog I don't need to restart the process, and logrotate will maintain the old log files exactly as I want. Is there a way to get these two programs to work with each other? If not, what is a good solution to this problem?

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  This serverfault.com/questions/189477/… probably answers your question – Iain Nov 3 '12 at 19:00
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  systemd and the journal should be able to fix this when they'll be available in production. systemd will redirect stdout to the journal and the journal will rotate the logs when needed. – Cristian Ciupitu Nov 3 '12 at 19:22