unicorn service script

unicorn.sh

#! /usr/bin/env bash
# 
# Control unicorn server
#
# NOTICE:
# Environment -> production
#
# Author: Tony
#

# Model
RAILS_ENV=production                                                                                    
export RAILS_ENV

# Relative url root
# deploying to a subdirectory
#export RAILS_RELATIVE_URL_ROOT=/app

# Secret key
SECRET_KEY_BASE=72fbdb1f8562281cef4c7095374d6ba5dbbf1271
export SECRET_KEY_BASE

# Unicorn
# work_path
WORK_PATH=${TMPDIR:-/tmp/${PWD##*/}}
export WORK_PATH

mkdir -p "$WORK_PATH/log"

UNICORN_PID="${WORK_PATH}/unicorn.pid"

ACTION=$1

running(){
	if [ -f "$1" ]
	then
		local PID=$(cat "$1" 2>/dev/null) || return 1
		kill -0 "$PID" 2>/dev/null
		return
	fi                                                                                                    
	rm -f "$1"
	return 1
}

stop(){
if running $UNICORN_PID
then
	kill $(cat "$UNICORN_PID")
	sleep 1
fi
rm -f "$UNICORN_PID"
echo OK
}

start(){
	if running $UNICORN_PID
	then
		echo "Already Running $(cat $UNICORN_PID)!"
		exit 1
	fi
	# assets                                                                                                
	bundle exec rake assets:precompile
	unicorn_rails -D -c config/unicorn.rb
	if [[ "$?" -eq 0 ]]
	then
		echo OK.
	else
		echo FAILED.
	fi
}


################################
# Do the action
################################
case "$ACTION" in
	start)
		echo "Start unicorn server..."
		start
		;;
	stop)
		echo "Stop unicorn server..."
		stop
		;;
	restart)
		"$0" stop
		"$0" start
		;;
	*)
		echo "Usage: ${0} {start|stop|restart}"
		;;
esac

exit 0