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Currency rate monitor script

December 10th, 2008 Leave a comment Go to comments

Using Nagios I am able to monitor the currency conversion rate, so I can know exactly when to sell my currency and to buy my currency. I wrote a creative plugin to nagios that does just that!
Its not my best bash code, I should really rewrite in perl. But the idea is here, and it works.
Anyone wants to build a nagios just to monitor and graph currency exchange rates? I am up for it.
Example:
bash currencymon.sh
Usage: currencymon.sh [–minwarn value] [–maxwarn value] [–mincrit value] [–maxcrit value] [-v|–verbose]
# bash currencymon.sh 2.65 2.95 2.55 3.15
MONEYX OK: Value of EURO is – 3.1623
The current conversion is from Euro x Real, inside the script there is a parameter to change it.
currencymon.sh

#!/bin/bash
#Script to monitor Money Conversion Rates
#####################################################
# Nagios plugin to monitor currency exchange value #
#####################################################
#Author Felipe Ferreira Version: 1.0 Date: 16/10/2008
#Melhoras:
#Allow passing the Conversion Type as Param
#Allow graphing inside Nagios

VERBOSE=0
MINCRIT=0
MINWARN=0
MAXCRIT=99999999
MAXWARN=99999999
VALUE=0
CONVERSION=”EURBRL”
#CONVERSION=”BRLEUR”

# Test if Arguments are passed to script
outputDebug() {
if [ $VERBOSE -gt 0 ] ; then
echo $1
fi
}
# no args passed, TEMP output string variable
if [ $# -eq 0 ] ; then
TEMP=”-h”
#getpot parses the args
else
TEMP=`getopt -o vhm -l ‘help,verbose,minwarn:,mincrit:,maxwarn:,maxcrit:’ — “$@”`
fi

outputDebug “Processing Args $TEMP”
if [ $? != 0 ] ; then echo “Terminating…” >&2 ; exit 1 ; fi
eval set — “$TEMP”

while true ; do
case “$1” in
-v|–verbose) VERBOSE=1 ; outputDebug “Verbose Mode ON” ; shift ;;
-h|–help) echo “Usage: $0 [–minwarn value] [–maxwarn value] [–mincrit value] [–maxcrit value] [-v|–verbose] ” ; exit 0;;
–minwarn) outputDebug “Option $1 is $2” ; MINWARN=$2 ; shift 2;;
–maxwarn) outputDebug “Option $1 is $2” ; MAXWARN=$2 ; shift 2;;
–mincrit) outputDebug “Option $1 is $2” ; MINCRIT=$2 ; shift 2;;
–maxcrit) outputDebug “Option $1 is $2” ; MAXCRIT=$2 ; shift 2;;
# –conv) outputDebug “Option $1 is $2” ; CONVERSION=$2 ; shift 2;;
–) shift ; break ;;
*) echo “Internal error! – found $1 and $2” ; exit 3 ;;
esac
done

#echo “CONVERSION is $CONVERSION”

assertSizeOK() {
outputDebug ” EURO is $1 validating ”
if awk ‘BEGIN{if(0+’$1’<'$MINCRIT'+0)exit 0;exit 1}' then echo "MONEYX Critical: Min Crit is $MINCRIT and Value of EURO - $VALUE" ; exit 2 fi if awk 'BEGIN{if(0+'$1'<'$MINWARN'+0)exit 0;exit 1}' then echo "MONEYX Warning: Min Warn is $MINWARN and Value of EURO - $VALUE" ; exit 1 fi if awk 'BEGIN{if(0+'$1'>‘$MAXCRIT’+0)exit 0;exit 1}’
then
echo “MONEYX Critical: Max Cirtical is $MAXCRIT and Value of EURO – $VALUE” ; exit 2
fi
if awk ‘BEGIN{if(0+’$1’>’$MAXWARN’+0)exit 0;exit 1}’
then
echo “MONEYX Warning: Max warn $MAXWARN Value of EURO – $VALUE” ; exit 1
fi
}

getValue()
{
cd /tmp
#Get the info from yahoo
wget -q -O euro.csv wget “http://download.finance.yahoo.com/d/quotes.csv?s=$CONVERSION=X&f=l1&e=.csv”
VALUE=`cat euro.csv`
#Should remove .
#cat euro.csv | sed -e “s/./_/” >>euro2.txt
#cat euro.csv | sed -i e ‘s/./_/g’>>euro2.txt
#VALUE=`cat euro2.txt`
#echo $VALUE
}

getValue
assertSizeOK $VALUE $1
echo “MONEYX OK: Value of EURO is – $VALUE”
exit 0

  1. Greg
    March 2nd, 2009 at 23:01 | #1

    Felipe, the writer of curl was on floss weekly podcast a few weeks back. He said he wrote curl because he needed to automate the collection of currency rates. Perhaps you will find that interesting…

    Greg

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