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#!/bin/bash
#cpu idle percent
cpu_idle=`top -b -d 1 -n 2 | grep Cpu | awk 'NR>1{print $5}' | cut -f 1 -d "."`

if [ -d "/opt/scripts/log" ]
then
   cd /opt/scripts
else
   mkdir /opt/scripts/log
fi

count=0
condition=true
while condition
do
        if [ $cpu_idle -le 20 ]
        then
           pids=`top -b -d 1 -n 1 | grep java | awk '{if($9 > 80) print $1}'`
           for ((a = 1; a < 10; a++))
           do
              for pid in $pids
              doi
                 #involve jdk existence check later
                 date=`date +%Y%m%d%H%M`
                 sh showstack.sh -c 30 -p $pid > log/stack_$pid_$date.log
                 jstat -gcutil $pid > log/gc_$pid_$date.log
              done
           done
           for pid in $pids
           do
              date=`date +%Y%m%d%H%M`
              jmap -heap $pid > log/heap_$pid_$date.log
           done
           count++
           cpu_idle=`top -b -d 1 -n 2 | grep Cpu | awk 'NR>1{print $5}' | cut -f 1 -d "."`
           if [ $count -ge 3]
           then
              #send emaili
              #server ip address
              ip=`ifconfig eth0 | grep "inet addr" | cut -f 2 -d ":" | cut -f 1 -d " "`
              condition=false
              count=0
           fi
        else
           condition=false
           count=0
        fi
done