Splitting large mongodb log with mtools.

split.py

#!/usr/bin/env python

import sys
from mtools.util.logfile import LogFile

log = LogFile(open(sys.argv[1], 'r'))
day = None
out = None
for line in log:
	d = line.datetime
	if d is None:
		continue
	if day != (d.year, d.month, d.day):
		day = (d.year, d.month, d.day)
		print d
		if out is not None:
			out.close()
		out = open(d.strftime('mongo-%y-%m-%d.log'),  'w')
	out.write(line.get_line_str())
	out.write('\n')