#!/bin/bash

set -e

CASSANDRA_BIN_PATH="/opt/apache-cassandra/bin"
PID_FILE="/var/run/cassandra.pid"

stop_cassandra(){
	kill `cat $PID_FILE`
	rm -f $PID_FILE
}

if [ ! -d $CASSANDRA_BIN_PATH ]; then
	echo 
	echo "Cassandra is not installed on this machine!"
	echo "Please check cassandra installation or set var CASSANDRA_BIN_PATH properly"
	echo 
	exit 1
fi

case $1 in 
	start)
		echo  " * Starting Cassandra..."
       		$CASSANDRA_BIN_PATH/cassandra -p $PID_FILE > /dev/null 2>&1
		;;
	stop)
		echo  " * Stopping Cassandra..."
                stop_cassandra
		;;
	restart) 
		echo  " * Rerstarting Cassandra..."
                stop_cassandra
		sleep 3
                $CASSANDRA_BIN_PATH/cassandra -p $PID_FILE > /dev/null 2>&1
	        ;;
	*)   	
		echo  " * Please provide correct option between start|stop|restart"
		;;
esac