#!/bin/bash#define the delta limit - difference between previous and current check#this is the difference in drop, not in raise.baddelta="100"#define the bad value limit - the minimum value size we will accept as being#normal - i.e. if the current value is less than $badval then there is an issue.badval="100"################################################################################# End user should not need to change anything below this line.#################################################################################Lets pull in and define some variables.#The hostname of the machine we will be checkingHOST=$1#The type of machine we are checking - streamer, catalogueTYPE=$2#The attribute we are checking - anon, sub, cacheATTR=$3#set default values to avoid if issuesdelta="0"curdelta="0"value="0"#set our temp file, this file is used for storing the previous $value#one temp file per host per type per attribute - saves confusion.#it will be inherited as $oldvaltmp=/tmp/$HOST.$TYPE.$ATTR.jmx.get.tmp#general sanity checkif [ -z $HOST ] || [ -z $TYPE ] || [ -z $ATTR ]then echo "Missing Parameters" exit 2fi#more silly sanity checkingtouch $tmp#inherit our $oldval from the temp file. $tmp#check what type we are dealing with and assign the correct url dependant on typeif [ $TYPE == "streamer" ]then urltype="fm.last.ticketstream.monitor.Status"elif [ $TYPE == "catalogue" ]then urltype="fm.last.catalogue.monitor.Status"fi#same for attribute.if [ $ATTR == "anon" ]then attribute="NumAnon"elif [ $ATTR == "sub" ]then attribute="NumLoggedIn"elif [ $ATTR == "cache" ]then attribute="CacheSizes"else #I dont know, it could happen... echo "OMG, Its a Lion on line 59..." exit 2fi#sanity check for the $oldval inheritance - first run this wont be set#so we will set it to zero if that is the case.if [ -z $oldval ]then oldval=0fi#create our URL.URL="http://gimli.int.last.fm:4041/getattribute?objectname="$HOST""$TYPE":type="$urltype"&attribute="$attribute""#nitty gritty begins...function getvalue {##this is the most pointless function ever, but, using a function just in case it gets complicated.#declare only valid for this function, stripping everything but the value out#with cut and passing to a global.value=$(GET "$URL" | grep -o "value=\".*\"" | sed -e 's/\"//g' | cut -d"=" -f2)}#figure out what the delta is.function getdelta { if [ $oldval -lt $value ] then #Because I am paranoid, and I can. touch $tmp #<= is important, saves hitting line 97 repeatedly elif [ $value -le $oldval ] then delta="$(( $oldval - $value ))" else #it would be thoroughly bad to arrive here, we shouldnt, but, we could. echo "We really shouldnt be on line 97" exit 2 fi}function rotate { #export our oldvalue to the temp file for use next time around echo "oldval=$value" > $tmp}function checkerr { #let the error checking commence if [ $value -lt $badval ] then #if the value is less than our bad value, then this is bad. echo "Value is less than expected - $value" exit 2 elif [ $delta -gt $baddelta ] then #if the delta is out of range, this is also bad. echo "Delta is too large - $delta" exit 2 else #all is good. echo "Value is - $value, Delta is - $delta" exit 0 fi}getvaluegetdeltarotatecheckerr