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[/] [trunk/] [statistiky/] [opt/] [statistiky/] [collect_crusader.sh.20070127] - Rev 1
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#!/bin/bash3
#
#
# 2005-11-27/Libor Predelano cteni seriaku. Ted si ho otevre jako filedescriptor
# a cte z nej jako ze souboru. Na Marvinovi se tim (snad) uplne
# odstranily chly do nuly, ktere byly nejspis zpusobeny
# rychlosti (pomalosti) Marvina. (800MHz VIA C3)
# 2005-11-02/Libor konfiguracni skripty na prehazovani primarni FSO <-> backup WiFi
# logovani do /var/statistiky/crusader/crusader.log
# bash3, nevim proc, ale na Marvinovi mi to s dvojkou nechodilo kvuliva
# porovnavani desetinnych cisel pomoci if [ $neco -le $rss ]...
# 2005-10-27/Libor pridano prehazovani na WiFi zalohu pri signalu < 300
#
#
if [ $# -eq 1 ]; then
crusader_number=$1
fi
if [ $# -gt 1 ]; then
echo "ERROR: more than 1 option" >&2
fi
if [ $# -lt 1 ]; then
crusader_number=0
fi
stat_dir="/var/statistiky/crusader"
logfile="$stat_dir/crusader.log"
mkdir -p $stat_dir
config_file=/opt/statistiky/collect_crusader.conf
script_set_main=/opt/statistiky/crusader_set_main.sh
script_set_backup=/opt/statistiky/crusader_set_backup.sh
function Log()
# $1 ... message
{
timenow=`date +"%Y-%m-%d %T"`
echo "$timenow $1"
echo "$timenow $1" >>$logfile
}
Log "Crusader start ====="
Log "Using config file: $config_file"
if [ ! -f $config_file ]
then
Log "Missing config file $config_file, exiting."
exit 1;
fi
if [ ! -x $script_set_main ]; then
Log "Script set up main is not executable: $script_set_main"
exit 1;
fi
if [ ! -x $script_set_backup ]; then
Log "Script set up main is not executable: $script_set_backup"
exit 1;
fi
cd $stat_dir
function create()
# $1 ... netdevice
{
local file=$1
Log "Creating RRD archive $file"
# step = 5s
# za posledni 2,5 hodiny chceme vsechny PDP => 2,5 * 3600 / 5 = 1800 hodnot/radku
# 20s ~ agregace ze ctyr hodnot (PDP)
# za poslednich 10 hodin chceme 20s udaje => 10*3600/20 = 1800 generaci/radku
# za poslednich 30 hodin chceme 60s udaje => 30*3600/60 = 1800 generaci/radku
# 5 minut = 12 PDP za minutu * 5 minut = 60 PDP
# za posledni tyden (9dni) chceme 5minutove udaje => 12*24*9 = 2592 radku (rows)
# 20min ~ agregace z 240 PDP
# za posledni mesic (38dni) chceme 20minutove useky => 3*24*38 = 2736 radku
# dve hodiny ~ 1440 PDP
# za posledni rok chceme dvouhodinove useky => 12*400 = 4800 radku
rrdtool create ${file}.rrd --step 5 --start `date +%s` \
DS:rss_avg:GAUGE:10:0:999 \
DS:rss_min:GAUGE:10:0:999 \
DS:rss_max:GAUGE:10:0:999 \
RRA:AVERAGE:0.7:1:1800 \
RRA:MAX:0.7:1:1800 \
RRA:MIN:0.7:1:1800 \
RRA:AVERAGE:0.7:4:2880 \
RRA:MAX:0.7:4:2880 \
RRA:MIN:0.7:4:2880 \
RRA:AVERAGE:0.7:12:1800 \
RRA:MAX:0.7:12:1800 \
RRA:MIN:0.7:12:1800 \
RRA:AVERAGE:0.7:60:2592 \
RRA:MAX:0.7:60:2592 \
RRA:MIN:0.7:60:2592 \
RRA:AVERAGE:0.7:240:2736 \
RRA:MAX:0.7:240:2736 \
RRA:MIN:0.7:240:2736 \
RRA:AVERAGE:0.7:1440:4800 \
RRA:MAX:0.7:1440:4800 \
RRA:MIN:0.7:1440:4800
}
function wait_to()
# $1 date for waiting to
{
local time_now=`date +%s`;
while [ $time_now -lt $1 ]
do
time_now=`date +%s`
sleep 1;
done
}
function activate_wifi()
{
$script_set_backup
# ip route del default
# ip route add default via 10.23.13.1
echo "Activated WiFi backup"
}
function activate_fso()
{
$script_set_main
# ip route del default
# ip route add default via 10.23.192.53
echo "Activated FSO primary link"
}
function rss_check_status()
# $1 ... jmeno rusaderu (napr. crusader0)
# $2 je sila signalu RSS
{
local name=$1
local rss=$2
if [ $rss -ge $rss_low_threshold ]; then
echo "RSS($rss) >= low_threshold ($rss_low_threshold), erasing rss_low_count"
rss_low_count="0"
fi
if [ $rss -le $rss_good_threshold ]; then
echo "RSS($rss) <= good_threshold ($rss_good_threshold), erasing rss_good_count"
rss_good_count="0"
fi
if [ "$rss_status" == "good" ] && [ $rss -lt $rss_low_threshold ]; then
let rss_low_count+=1
echo "RSS($rss) < low_threshold ($rss_low_threshold), increasing rss_low_count to $rss_low_count"
fi
if [ "$rss_status" == "low" ] && [ $rss -gt $rss_good_threshold ]; then
let rss_good_count+=1
echo "RSS($rss) > good_threshold ($rss_good_threshold), increasing rss_good_count to $rss_good_count"
fi
if [ "$rss_status" == "good" ] && [ $rss_low_count -ge $rss_low_counter_go_backup ]; then
echo "FSO link goes down"
rss_status="low"
activate_wifi
Log "Crusader $crusader_number: goes down, activating WiFi backup (RSS $rss)"
fi
if [ "$rss_status" == "low" ] && [ $rss_good_count -ge $rss_good_counter_go_main ]; then
echo "FSO link goes up"
rss_status="good"
activate_fso
Log "Crusader $crusader_number: goes up, activating FSO (RSS $rss)"
fi
}
function load_config()
{
. ${config_file}
rss_low_threshold=${RSS_LOW_THRESHOLD[$crusader_number]}
rss_good_threshold=${RSS_GOOD_THRESHOLD[$crusader_number]}
rss_low_counter_go_backup=${RSS_LOW_COUNTER_TO_GO_BACKUP[$crusader_number]}
rss_good_counter_go_main=${RSS_GOOD_COUNTER_TO_GO_MAIN[$crusader_number]}
device=${DEVICE[$crusader_number]}
name=${NAME[$crusader_number]}${crusader_number}
}
print_config()
{
Log "Crusader $crusader_number"
Log " RSS low threshold = $rss_low_threshold"
Log " RSS good threshold = $rss_good_threshold"
Log " RSS low counter go backup = $rss_low_counter_go_backup"
Log " RSS good counter go main = $rss_good_counter_go_main"
Log " Seriak: $device"
}
# Inicializace
load_config
print_config
# otevri seriak jako filedescriptor
exec 10<${device}
read rest <&10 # synchronizacni cteni
j=0
rv=2
while [ $rv -eq 2 ] # pokud vyjde 2, pak to neni cislo a test selhal
do
let j=$j+1
read -t 1 rss rest <&10
test $rss -ge 0 2>/dev/null # slouzi k otestovani, ze rss obsahuje numerickou hodnoru
rv=$?
done
echo "Pocet pokusu: $j"
Log " Sila signalu pri startu (RSS): $rss"
if [ $rss -gt $rss_good_threshold ]; then
Log " Preliminary setting to FSO"
activate_fso
rss_status="good"
rss_status_last="good"
else
Log " Preliminary set to WiFi backup"
activate_wifi
rss_status="low"
rss_status_last="low"
fi
# kolikrat byl signal nizsi nez rss_low_threshold opakovane v rade po sobe
rss_low_counter=0
# kolikrat byl signal vyssi nez rss_good_threshold opakovane v rade po sobe
rss_good_counter=0
start_time=`date +%s`
interval=$(( $start_time / 5 * 5 + 5 ))
# Hlavni smycka
while [ true ] ; do
old_device=${device}
load_config
if [ "$device" != "${old_device}" ]; then
Log "Crusader $crusader_number: Zmena seriaku ${old_device} -> ${device}"
# zavri seriak
exec 10<&-
# otevri novy seriak
exec 10<${device}
fi
rrdfile=${name}
if [ ! -f $rrdfile.rrd ] ; then
create $rrdfile
fi
soucet_rss="0"
rss_min="1000" # ma to jen tri cifry, tj. max 999 => 1000 je vic nez maximum
rss_max="0"
pocet="0"
read rest <&10 # pouze synchronizace, holt o jeden radek prijdeme
time_now=`date +%s`
while [ $time_now -lt $interval ]; do # cekame na zacatek dalsiho intervalu
time_now=`date +%s`
read -t 1 rss rest <&10 # tady cteme z file descriptoru (seriak)
# echo "rss: '$rss' and the rest of line: '$rest'"
test $rss -ge 0 2>/dev/null # slouzi k otestovani, ze rss obsahuje numerickou hodnoru
if [ $? -lt 2 ] # pokud vyjde 2, pak to neni cislo a test selhal
then
soucet_rss=$(( $soucet_rss + $rss ))
pocet=$(( $pocet + 1 ))
if [ $rss -lt $rss_min ]; then
rss_min=$rss
fi
if [ $rss -gt $rss_max ]; then
rss_max=$rss
fi
fi
done
if [ $pocet -gt 0 ]
then
prumer=`echo "${soucet_rss}/${pocet}" | bc -l`
echo "prumer: $prumer min: $rss_min max: $rss_max"
rrdtool update $rrdfile.rrd -t rss_avg:rss_min:rss_max $interval:$prumer:$rss_min:$rss_max
prumer=`echo $prumer | cut -d '.' -f 1`
rss_check_status ${name} $prumer
else
echo "NaN"
rrdtool update $rrdfile.rrd -t rss_avg:rss_min:rss_max $interval:U:U:U
rss_check_status ${name} 0
fi
interval=$(( $interval + 5 ))
done
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