challenge

#!/bin/bash
# ------------------------------------------------------------------
# [Jimenez] devops challenge
# ------------------------------------------------------------------

VERSION=0.1.0
SUBJECT=jimenez-devops-challenge
read -r -d '' USAGE << EOM
challenge: Operates the DevOps challenge Vagrantfile.
usage: challenge [options]
  -d (D)estroy the cluster (with confirmation)
  -u Start (u)p the cluster
  -p (P)rovision the cluster
  -s (S)top the cluster
  -e Susp(e)nd the cluster
  -r (R)esume the cluster
  -v Print script (v)ersion
  -h Print this (h)elp
EOM

# --- Options processing -------------------------------------------
if [ $# == 0 ] ; then
    echo -e "$USAGE"
    exit 1;
fi

while getopts ":duspervh" optname
  do
    case "$optname" in
      "d")
	echo -e "Destroying the cluster CANNOT be undone.\nYou WILL lose persistent storage! Are you sure?"
	select yn in "Yes" "No"; do
    	 case $yn in
        	Yes ) vagrant destroy -f; break;;
        	No ) exit;;
   	 esac
	done
	;;
      "u")
        vagrant up;
        ;;
      "p")
        vagrant provision;
        ;;
      "s")
        vagrant halt;
        ;;
      "e")
        vagrant suspend;
	;;
      "r")
	vagrant resume;
	;;
      "v")
        echo "challenge Version $VERSION"
        exit 0;
        ;;
      "h")
        echo -e "$USAGE"
        exit 0;
        ;;
      "?")
        echo "Unknown option $OPTARG"
        exit 0;
        ;;
      *)
        echo "Unknown error while processing options"
        exit 0;
        ;;
    esac
  done

shift $(($OPTIND - 1))

param1=$1
param2=$2

# --- Locks -------------------------------------------------------
LOCK_FILE=/tmp/$SUBJECT.lock
if [ -f "$LOCK_FILE" ]; then
   echo "Script is already running"
   exit
fi

trap "rm -f $LOCK_FILE" EXIT
touch $LOCK_FILE

# --- Body --------------------------------------------------------
#  SCRIPT LOGIC GOES HERE
echo $param1
echo $param2
# -----------------------------------------------------------------