source: npl/phone/custom_scripts/asterisk_guardian_peers/asterisk_guard_peers.sh

#!/bin/bash
#(C) 2009 DatuX HR Meertens
#This script monitores system values and generates snmptraps

source /etc/asterisk_guard_peers.conf

function retrieveData {
        OUTPUT=`asterisk -r -x "sip show peers" | grep "sip peers"`;    
        VALUE1=`echo $OUTPUT | cut -d ' ' -f 5`;
        VALUE2=`echo $OUTPUT | cut -d ' ' -f 10`;
        return `echo "$VALUE1 + $VALUE2" | bc` ;

        #return `asterisk -r -x "show channels" | grep "active call" | cut -d ' ' -f 1`
        #return `asterisk -r -x "sip show peers" | grep "active call" | cut -d ' ' -f 1`
        
}
function sendSnmpTrap {
        #`snmptrap -e $EngineID -v 3 -u $Username -a MD5 -A $Password -l authNoPriv $Hostname "" snmpTrap .1.3.6.1.4.1.22736.1.2.5 i $1`
        `snmptrap -v 2c -c public $Hostname "" snmpTrap .1.3.6.1.4.1.22736.1.2.5 i $1`
}
function retrieveUptime()
{
        return `asterisk -r -x "core show uptime seconds" | grep uptime | cut -d ' ' -f 3`;
}
function sendDeviateSyn3State {

        if [ "$1" == "OK" ]; then
                syn3-state "Asterisk_active_peers" "OK" "Er is geen abnormale afwijking in het aantal actieve peers";
        else
                syn3-state "Asterisk_active_peers" "ALERT" "Er is een TE grote afwijking in het aantal actieve peers - vorige meting: $2 huidige meting: $3";
        fi
}


#initial check
retrieveData
PreviousActiveCalls=$?
timer=0
sleep 2;

while(true);
do



        retrieveData
        activeCalls=$?
        if [ $activeCalls -ge `echo "$PreviousActiveCalls+$CallDeviateValue" | bc` ]; then
                deviatedStatus=1;
        else
                deviatedStatus=0;
        fi
        if [ $activeCalls -le `echo "$PreviousActiveCalls-$CallDeviateValue" | bc ` ]; then
                deviatedStatus=1;
        else
                deviatedStatus=0;
        fi
        retrieveUptime
        uptime=$?
        if [ $FreezeTimeAfterRestart -le $uptime ]; then
                if [ "$deviatedStatus" == "1" ]; then
                        echo "ALERT";
                        sendDeviateSyn3State "ALERT" $PreviousActiveCalls $activeCalls; 
                else
                        echo "OK";
                        sendDeviateSyn3State "OK" $PreviousActiveCalls $activeCalls;    
                fi
        fi
        #if [ $timer -ge $SendActiveCallsStatusInterval ]; then
        #       #Retrieve active calls
        #       retrieveActiveCalls
        #       activeCalls=$?
        #       #verstuur snmp trap.
        #       #sendSnmpTrap $activeCalls
        #       #reset timer
        #       timer=0
        #fi
        PreviousActiveCalls=$activeCalls
        sleep $CallDeviateCheckInterval
        #timer=`echo "$CallDeviateCheckInterval+$timer" |bc`
done