fmLogAnalyser: Add automatic log archiving

[mrwatson-de]

Wouldn't it be good, if fmLogAnalyser could automatically reduce the size of the import.log file, so that processing times remain small?!

Automatically archive file

Trigger on?

• Date
  • ...by year/quarter/month
• Size
  • max size MB reached
• Processing Time
  • when load time > # Seconds

And do what?

• delete file
• archive & delete file
• archive half (or # %) of the data (so that recent errors are not removed / overlooked)

archived file?

• overwrite
• append date / timestamp
• append YYYY or YYYYMM or YYYYQ# depending on time-trigger
• append YYYYMMDD representing the date of the contents (when % of data written)