initd unicorn script fauna

unicorn

#!/bin/bash
# /etc/init.d/unicorn

# ### BEGIN INIT INFO
# Provides:          unicorn
# Required-Start:    $network $remote_fs $local_fs
# Required-Stop:     $network $remote_fs $local_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Stop/start unicorn
### END INIT INFO

set -e

PROJ_NAME="fauna-reisen.de"
PROJ_DIR="/var/www/vhosts/$PROJ_NAME/app/current"
PID_FILE="$PROJ_DIR/tmp/pids/unicorn.pid"
OLD_PID_FILE="$PID_FILE.oldbin"
TAG='[unicorn]'
UNICORN_CONFIG="config/unicorn.rb"
DEPLOY_USER="rails"
RAILS_ENV="production"
RBENV_ROOT="/home/$DEPLOY_USER/.rbenv"
RBENV_RUBY_VERSION="1.9.3p448"
PATH="$RBENV_ROOT/bin:$RBENV_ROOT/shims:$PATH"
SET_PATH="cd $PROJ_DIR; rbenv rehash; rbenv local $RBENV_RUBY_VERSION"
DAEMON="bundle exec unicorn_rails"
DAEMON_OPTS="-c $PROJ_DIR/$UNICORN_CONFIG -E $RAILS_ENV -D"
CMD="cd $PROJ_DIR && $DAEMON $DAEMON_OPTS"
NAME="unicorn"
DESC="Unicorn app for $APP_NAME"

# Start the service
start() {
    if [[ -f $PID_FILE ]]; then
        logger -sit $TAG "There is a PID file in $PID_FILE. Service should be running"
        exit 1
    else
        logger -sit "$TAG" "Trying to start server..."
        su $DEPLOY_USER -c "$CMD"
        if [[ $? == 0 ]]; then
            logger -sit "$TAG" "server started"
        CMD
            logger -sit "$TAG" "FAILED to start server"
            exit 1
        fi
    fi
}

# Stop the service
stop() {
        su $DEPLOY_USER -c "kill -TERM $(cat $PID_FILE)"
        sleep 2
        if [[ ! -f $PID_FILE ]]; then
                logger -sit "$TAG" "Server stoped"
        else
                logger -sit "$TAG" "FAILED to stop server"
                exit 1
        fi
}

# Reload service
reload() {
    logger -sit "$TAG" "Trying to reload server"
    kill -USR2 $(cat $PID_FILE)
    sleep 1
    if [[ -f $OLD_PID_FILE ]]; then
        logger -sit "$TAG" "Server reloaded"
    else
        logger -sit "$TAG" "FAILED to reload server"
        exit 1
    fi
}

restart() {
        logger -sit "$TAG" "Restarting server"
        kill -HUP $(cat $PID_FILE)
}

### main logic ###
case "$1" in
    start)
        start
        ;;

    stop)
        stop
        ;;

    restart)
        restart
        ;;
    reload)
        reload
        ;;
    *)
        echo $"Usage: $0 {start|stop|restart|reload}"
        exit 1
esac

exit 0