#!/bin/sh
# Produce statistics from nginx access_log
# $1 = logfile
[ $1 ] || exit 0
logfile=$1

# assume we haven't had more than 1000 rps over the past 5 minutes
# 5*60*1000=300,000
tail -300000 $logfile | cut -f4 -d ' ' | uniq -c > /tmp/statsnginx.1.$$
#we sort above in case timetamp jumps around - yes I've seen it
#Now we have raw data in /tmp/statsnginx.1.$$
#10 sec = last 10 lines
#1 min = last 60 lines
#5 min = last 300 lines

#Concise output on one line
#last 10s
c10s=`tail -10 /tmp/statsnginx.1.$$ | awk '{ s += $1 } END  { print int(s/NR) }'`
#last 1m
c1m=`tail -60 /tmp/statsnginx.1.$$ | awk '{ s += $1 } END  { print int(s/NR) }'`
#last 5m
c5m=`tail -300 /tmp/statsnginx.1.$$ | awk '{ s += $1 } END  { print int(s/NR) }'`
echo -n "c10s:${c10s}"
echo -n " "
echo -n "c1m:${c1m}"
echo -n " "
echo -n "c5m:${c5m}"
echo ""

rm -f /tmp/statsnginx.1.$$
exit 0