puma init script

etc init.d puma

#!/bin/sh
### BEGIN INIT INFO
# Provides:          puma
# Required-Start:    $remote_fs $network $syslog
# Required-Stop:     $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start daemon at boot time
# Description:       Enable service provided by daemon.
### END INIT INFO
export LANG=en_US.UTF-8
work_dir=/var/www/discuss_it
dir=/var/www/discuss_it/current
user="theoretick"

name=`basename $0`
pid_file=$work_dir/shared/pids/puma.pid
stdout_log=$work_dir/shared/log/discuss_it.log
stderr_log=$work_dir/shared/log/discuss_it.log
app_env="RACK_ENV=production"

get_pid() {
    cat "$pid_file"
}

is_running() {
    [ -f "$pid_file" ] && ps `get_pid` > /dev/null 2>&1
}

case "$1" in
    start)
    if is_running; then
        echo "Already started"
    else
        echo "Starting $name"
        cd $dir
        sudo -u theoretick -H bash -l -c "cd $dir && $app_env bundle exec $dir/bin/server" &

        sleep 5s
        if ! is_running; then
            echo "Unable to start, see $stdout_log"
            exit 1
        fi
    fi
    ;;
    stop)
    if is_running; then
        echo -n "Stopping $name.."
        sudo -u theoretick -H bash -l -c "cd $dir && $app_env bundle exec pumactl -P $work_dir/shared/pids/puma.pid stop"

        for i in {1..20}
        do
            if ! is_running; then
                break
            fi

            echo -n "."
            sleep 1
        done
        echo

        if is_running; then
            echo "Not stopped; force killing."
            kill -9 `get_pid`
            if [ -f "$pid_file" ]; then
                rm "$pid_file"
            fi
            exit 1
        else
            echo "Stopped"
            if [ -f "$pid_file" ]; then
                rm "$pid_file"
            fi
        fi
    else
        echo "Not running"
    fi
    ;;
    restart)
    $0 stop
    if is_running; then
        echo "Unable to stop, will not attempt to start"
        exit 1
    fi
    $0 start
    ;;
    status)
    if is_running; then
        echo "Running"
    else
        echo "Stopped"
        exit 1
    fi
    ;;
    *)
    echo "Usage: $0 {start|stop|restart|status}"
    exit 1
    ;;
esac

exit 0