check-access-log.sh

#!/bin/bash
# Checks the requests status available in an access.log file and outputs the first 20 lowest responses.
# The following pattern is expected: '%h %l %u %t "%r" %s %b "%{Referer}i" "%{User-Agent}i" %Dms'
# Author: Thiago Ferreira (https://github.com/tfc1304)
# Example of command to use it: ./check-access-log.sh '/my-path/services/rest/users' '/tmp/access_log.2017-03-03'

RED='\033[0;31m'
BLUE='\033[1;34m'
GREEN='\033[1;32m'
YELLOW='\033[1;33m'
NO_COLOR='\033[0m'

SCREEN_REFRESH_TIME=30

log="/var/log/tomcat/logs/access_log.log"
logLines=10000

if [ -z "$1" ]
then
  echo -e "\n Please inform the PATH which will be used by the query!\n"
  exit 3
fi

if [ ! -z "$2" ]
then
  log=$2
fi

if [ -z "$3" ]
then
  logLines=`wc -l ${log} | awk '{ print $NR }'`
fi

echo $logLines
fragmentPath=$1

function checkstatus() {
	CMD_STATUS_200="tail -n $logLines $log | grep '$fragmentPath' | grep ' 200 ' | wc -l"
	CMD_STATUS_400="tail -n $logLines $log | grep '$fragmentPath' | grep ' 400 ' | wc -l"
	CMD_STATUS_404="tail -n $logLines $log | grep '$fragmentPath' | grep ' 404 ' | wc -l"
	CMD_STATUS_500="tail -n $logLines $log | grep '$fragmentPath' | grep ' 500 ' | wc -l"

	CMD_SUM="tail -n $logLines $log | grep '$fragmentPath' | awk '{ print \$NF }'  |sed 's/ms//g' |  awk '{sum+=\$1} END { print sum }'"
	CMD_TOP_20="tail -n $logLines $log | grep '$fragmentPath' | awk '{ print \$NF \" \" \$7 }' | sed 's/ms//g' | sort -nr | head -n 20"

	`eval $CMD_TEST`
	top_20=`eval $CMD_TOP_20`

	status_200=`eval $CMD_STATUS_200`
	status_400=`eval $CMD_STATUS_400`
	status_404=`eval $CMD_STATUS_404`
	status_500=`eval $CMD_STATUS_500`

	sum=`eval $CMD_SUM`
	average=`expr $sum / $logLines`
	
	clear

	echo ""
	echo ""
	echo -e "################################################################"
	echo -e "#                      CHECK                                   #"
	echo -e "################################################################"
	echo -e "# ${GREEN} HTTP 200: $status_200 ${NO_COLOR}"
	echo -e "# ${YELLOW} HTTP 400: $status_400 ${NO_COLOR}"
	echo -e "# ${YELLOW} HTTP 404: $status_404 ${NO_COLOR}"
	echo -e "# ${RED} HTTP 500: $status_500 ${NO_COLOR}"
	echo -e "################################################################"
	echo -e "# ${BLUE} Response average time: ${NO_COLOR} ${YELLOW}${average} ms${NO_COLOR}"
	echo -e "################################################################"

	echo -e "$top_20"
	echo ""
	echo ""
}

checkstatus

while sleep $SCREEN_REFRESH_TIME; do clear; checkstatus; done