#!/bin/bash

# Author: Milen Kouylekov

# chkconfig: 35 92 15
# description: start/stop the Galaxy server and validate its dependencies

. /etc/init.d/functions

GALAXY_USER=laportal

start ()
{

## make sure the Galaxy tree is where we expect it
if [ ! -d /home/${GALAXY_USER}/galaxy ]
then
    echo "Error: \`/home/${GALAXY_USER}/galaxy' missing; exit."
    return 1
fi


## Check if memcached is running
if pgrep "memcached" > /dev/null
then
    :
else
    echo "Error: MEMCACHED is not running; exit."
    return 1
fi


## Check if HTTPD is running 
http_running="$(service httpd status)"
if [[ $http_running  != *"running"* ]]; then
    echo "Error: HTTPD is not running; exit."
    return 1
fi

## Check if MUNGE is running
if pgrep "munge" > /dev/null
then
    :
else
    echo "Error: MUNGE is not running; exit."
    return 1
fi

## Check if GOLD is running
if pgrep "goldd" > /dev/null
then
    :
else
    echo "Error: GOLD is not running; exit."
    return 1
fi

## Check if MongoDB is running
if pgrep "mongod" > /dev/null
then
    :
else
    echo "Error: MongoDB is not running; exit."
    return 1
fi

response=`wget http://localhost:8080/ -O /dev/null -S --quiet 2>&1`

if [[ $response == *"200"* ]]
then
    echo "Warning: GALAXY is currently running; trying shutdown."
    /home/${GALAXY_USER}/galaxy/run.sh --stop-daemon
    sleep 30 
    response=`wget http://localhost:8080/ -O /dev/null -S --quiet 2>&1`
    if [[ $response == *"PasteWSGIServer"* ]]
    then
        echo "Error: Unable to stop GALAXY; exit."
        return 1
    fi
fi

daemon --user=${GALAXY_USER} /home/${GALAXY_USER}/galaxy/run.sh --daemon

echo ""
i=0
sleep 10
while [ ${i} -lt 4 ]
do
    response=`wget http://localhost:8080/ -O /dev/null -S --quiet 2>&1`
    if [[ $response == *"PasteWSGIServer"* ]]
    then 
        echo "Success: GALAXY is talking to us." 
        return 0
    else
        sleep 5
        i=$[${i} + 1]
    fi
done

echo "Error: GALAXY is not responding after 30 seconds; check the log files."

return 1

}

stop ()
{
    /home/${GALAXY_USER}/galaxy/run.sh --stop-daemon
}


restart ()
{
    stop
    start
}


case "$1" in
    start) start; RETVAL=$? ;;
    stop) stop; RETVAL=$? ;;
    restart) restart; RETVAL=$? ;;
esac

exit $RETVAL