#!/bin/bash
# info: update httpd rrd
# options: PERIOD
#
# example: v-update-sys-rrd-httpd
#
# This function is for updating apache rrd database and graphic.

#----------------------------------------------------------#
#                Variables & Functions                     #
#----------------------------------------------------------#

# Argument definition
period=${1-daily}

# Includes
# shellcheck source=/etc/hestiacp/hestia.conf
source /etc/hestiacp/hestia.conf
# shellcheck source=/usr/local/hestia/func/main.sh
source $HESTIA/func/main.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"

#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

# Switching on time period
case $period in
	daily)
		start='-1d'
		end='now'
		grid='MINUTE:30:HOUR:1:HOUR:4:0:%H:%M'
		;;
	weekly)
		start='-7d'
		end='now'
		grid='HOUR:8:DAY:1:DAY:1:0:%a %d'
		;;
	monthly)
		start='-1m'
		end='now'
		grid='WEEK:1:WEEK:1:WEEK:1:0:%b %d'
		;;
	yearly)
		start='-1y'
		end='now'
		grid='MONTH:1:YEAR:1:MONTH:2:2419200:%b'
		;;
	*) exit "$E_RRD" ;;
esac

# Checking directory
if [ ! -d "$RRD/web" ]; then
	mkdir $RRD/web
fi

# Checking database
if [ ! -e "$RRD/web/httpd.rrd" ]; then
	# Adding database
	rrdtool create $RRD/web/httpd.rrd --step $RRD_STEP \
		DS:A:GAUGE:600:U:U \
		RRA:AVERAGE:0.5:1:600 \
		RRA:AVERAGE:0.5:6:700 \
		RRA:AVERAGE:0.5:24:775 \
		RRA:AVERAGE:0.5:288:797 \
		RRA:MAX:0.5:1:600 \
		RRA:MAX:0.5:6:700 \
		RRA:MAX:0.5:24:775 \
		RRA:MAX:0.5:288:797
fi

# Parsing data
if [ "$period" = 'daily' ]; then
	server_status=$(wget -qO- http://localhost:8081/server-status \
		| grep 'currently being processed' \
		| cut -f 2 -d '>' \
		| sed 's/requests currently being processed, //' \
		| cut -f 1,2 -d ' ')
	active=$(echo "$server_status" | cut -f 1 -d ' ')
	idle=$(echo "$server_status" | cut -f 1 -d ' ')
	a=$((active + idle))

	# Updating rrd database
	rrdtool update $RRD/web/httpd.rrd N:$a
fi

# Updating rrd graph
rrdtool graph $RRD/web/$period-httpd.png \
	--imgformat PNG \
	--height="150" \
	--width="670" \
	--start "$start" \
	--end "$end" \
	--vertical-label "Connections" \
	--x-grid "$grid" \
	-c "BACK#ffffff" \
	-c "SHADEA#ffffff" \
	-c "SHADEB#ffffff" \
	-c "FONT#555555" \
	-c "CANVAS#302c2d" \
	-c "GRID#666666" \
	-c "MGRID#AAAAAA" \
	-c "FRAME#302c2d" \
	-c "ARROW#FFFFFF" \
	DEF:a=$RRD/web/httpd.rrd:A:AVERAGE \
	COMMENT:'\r' \
	LINE1:a#fefda0:"Connections " \
	GPRINT:a:'LAST:Current\:''%8.0lf' \
	GPRINT:a:'MIN:Min\:''%8.0lf' \
	GPRINT:a:'MAX:Max\:''%8.0lf\j' &> /dev/null
result=$?

#----------------------------------------------------------#
#                       Hestia                             #
#----------------------------------------------------------#

if [ "$result" -ne 0 ]; then
	exit "$E_RRD"
fi

exit