stop

#! /bin/bash

######GLOBAL CONSTANTS AND FUNCTIONS
COLOR='\e[0;32m'
STATUS_COLOR='\e[0;32m'
ERROR_COLOR='\e[0;31m'
NC='\e[0m'

echo_Status () {
	echo -e "${STATUS_COLOR}${1}${NC}"
}

echo_Error () {
	echo -e "${ERROR_COLOR}${1}${NC}"
}

stop_historicalTweets () {
##### STOPPING historicalTweets.py
echo_Status "Checking for running instance of historicalTweets.py"
historicalTweets_running=`pgrep -f historicalTweets.py | wc -l`
if [[ $historicalTweets_running -eq 0 ]]
then  	echo_Status "historicalTweets.py is not running"
	echo_Status "Proceeding with execution..."
else	echo_Status "Running instance of historicalTweets.py detected."
	echo_Status "Killing existing instance..."
	pgrep -f historicalTweets.py | xargs kill
fi
echo_Status "Historical Tweets instance killed"
##### STOPPING historicalTweets.py ends
}

stop_crisisServer () {
##### STOPPING crisisServer.py
echo_Status "Checking for running instance of crisisSever"
crisisServer_running=`pgrep -f crisisServer.py | wc -l`
if [[ $crisisServer_running -eq 0 ]]
then  	echo_Status "crisisServer is not running"
	echo_Status "Proceeding with execution..."
else	echo_Status "Running instance of crisisServer detected."
	echo_Status "Killing existing instance..."
	pgrep -f crisisServer.py | xargs kill
fi
echo -e "${COLOR}Crisis Server instance killed."
##### STOPPING crisisServer.py ends
}

stop_mongodb () {
###### STOP MONGOD
echo_Status "Checking for running instance of Mongo DB server."
mongod_running=`pgrep -f mongod | wc -l`
if [[ $mongod_running -eq 0 ]]
then  	echo_Status "Mongo DB server is not running"
	echo_Status "Proceeding with execution..."
else	echo_Status "Running instance of Mongo DB server detected."
#	sudo ${folder_mongo_root}/bin/mongod --shutdown
	mongo << EOF
use admin
db.shutdownServer()
exit
EOF
	echo_Status "Stopped Mongo DB server"
fi
###### STOP MONGOD ends
}

######GLOBAL CONSTANTS AND FUNCTIONS ends

######PARSE COMMANDLINE PARAMETERS 
###Note to developers - if you dont pass parameters to this file, just ignore this bit
stop_mongodb="N"
stop_crisisServer="N"
stop_historicalTweets="N"

if [[ $# -eq 0 ]]
then
	stop_crisisServer="Y"
	stop_historicalTweets="Y"
else
	while getopts "mch" OPTION 
	do
	    case $OPTION in
	        c) stop_crisisServer="Y";;
       		h) stop_historicalTweets="Y";;
	        m) stop_mongodb="Y"
		   stop_crisisServer="Y"
		   stop_historicalTweets="Y";;
        	# Unknown option. No need for an error, getopts informs
        	# the user itself.
        	\?) exit 99;;
    		esac
	done
fi

#echo $stop_crisisServer, $stop_historicalTweets, $stop_mongodb
######PARSE COMMANDLINE PARAMETERS ends

##################MAIN PROGRAM BEGINS##################

######INITIALIZATION CODE = Derive/validate paths.
folder_mongo_root=`sudo which mongod`
if [ "${folder_mongo_root}" = "" ] #Check mongod was found
then
	echo_Error"Could not find location of mongod"
	exit 1
else
	folder_mongo_root=${folder_mongo_root%\/mongod}
fi

######INITIALIZATION CODE ends

if [[ $stop_crisisServer = "Y" ]]
then 	stop_crisisServer
else 	echo_Status "Skipped stopping of crisisServer"
fi
if [[ $stop_historicalTweets = "Y" ]]
then 	stop_historicalTweets
else 	echo_Status "Skipped stopping of historicalTweets"
fi
if [[ $stop_crisisServer = "Y" && $stop_historicalTweets = "Y" ]]
then 	rm -f nohup.out
fi
if [[ $stop_mongodb = "Y" ]]
then 	stop_mongodb
else 	echo_Status "Skipped stopping of monogo DB"
fi
echo_Status "Execution finished. Exiting..."