nginx_log_to_gnuplot.py

import sys
import re
import datetime
import time

r = re.compile(r'\[([\.\d]+)\].+\[(\d+/\w+/\d+:\d+:\d+:\d+ \+0400)\].+Mistress')
with open(sys.argv[1]) as f:
	for line in f:
		line = line.strip()
		m = r.match(line)
		if m:
			d = datetime.datetime.strptime(m.group(2), "%d/%b/%Y:%H:%M:%S +0400")
			# print m.group(1), m.group(2), d, time.mktime(d.timetuple())
			d += datetime.timedelta(hours = 4)
			v = float(m.group(1))
			if v > 5:
				v = 5
			print time.mktime(d.timetuple()), v