#!/bin/sh
#
# Plugin to monitor the number of people who connected in the last 30 minutes
# (we do not have a precise way to know who is still connected)
#
# Parameters:
# 	
# 	config
# 	autoconf
#
# Configuration variables
#
#	mysqlopts    - Options to pass to mysql which should include the
#  			username, password, host and alternc database.
#
# Example of the entry in plugin-conf.d/munin-node
#	[alternc*]
#	user root
#	env.mysqlopts --defaults-file=/etc/mysql/alternc.cnf
#
#
#%# family=auto
#%# capabilities=autoconf

MYSQLOPTS="$mysqlopts"
MYSQL=${mysql:-mysql}

if [ "$1" = "autoconf" ]; then
        $MYSQL --version 2>/dev/null >/dev/null
        if [ $? -eq 0 ]
        then
                $MYSQL $MYSQLOPTS -N -B -e 'SELECT COUNT(*) FROM domaines' 2>/dev/null >/dev/null
                if [ $? -eq 0 ]
                then
                        echo yes
                        exit 0
                else
                        echo "no (could not connect to mysql)"
                fi
        else
                echo "no (mysql client not found)"
        fi
        exit 1
fi

if [ "$1" = "config" ]; then
	echo 'graph_title AlternC - number of connected users'
	echo 'graph_vlabel quantity'
	echo 'graph_category alternc'
	echo 'totalusers.label total of connected users'
	exit 0
fi

/usr/bin/printf "totalusers.value "
$MYSQL $MYSQLOPTS -N -B -e "select count(*) from membres where lastlogin > DATE_SUB(NOW(), interval 30 minute)" 2>/dev/null | awk '{print $1}';