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#! /bin/sh

if test -f /etc/sysconfig/kvm; then
  . /etc/sysconfig/kvm
fi

: ${THRESHOLD:=0}
COUNT=$1
EVENT=$2

if [ "$THRESHOLD" -eq 0 ]; then
  level=user.debug
else
  level=user.info
fi

subscr_msg="your Red Hat Enterprise Linux subscription limit is $THRESHOLD"
subscr_msg="$subscr_msg guests. Please review your Red Hat Enterprise Linux"
subscr_msg="$subscr_msg subscription agreement or contact your Red Hat"
subscr_msg="$subscr_msg support representative for more information. You"
subscr_msg="$subscr_msg may review the Red Hat Enterprise subscription"
subscr_msg="$subscr_msg limits at http://www.redhat.com/rhel-virt-limits"

case $COUNT in
  1) guests=guest ;;
  *) guests=guests ;;
esac

case $EVENT in
  create)
    if [ "$THRESHOLD" -eq 0 ]; then
      msg="$COUNT $guests now active"
    elif [ $COUNT -gt "$THRESHOLD" ]; then
      level=user.warning
      msg="$COUNT $guests are currently active; $subscr_msg"
    fi
    ;;
  terminate)
    if [ $COUNT -ge "$THRESHOLD" ]; then
      msg="$COUNT $guests now active"
    fi
    ;;
esac

if [ -n "$msg" ]; then
  logger -p $level "KVM: $msg"
fi
exit 0