resque-scheduler.sh

#!/bin/sh
#
# This script starts and stops the Resque scheduler plugin daemon
# This script belongs in /engineyard/bin/resque
#
PATH=/bin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:$PATH

usage() {
  echo "Usage: $0 <appname> <env> {start|stop}"
  exit 1
}

if [ $# -lt 3 ]; then usage; fi

if [ "`whoami`" != "root" ]; then
  logger -t `basename $0` -s "Must be run as root"
  exit 1
fi

APP=$1
ENV=$2
ACTION=$3

# use rvm if application was configured as rvm alias
rvm_path=/usr/local/rvm
if [[ -s "${rvm_path}/environments/${APP}" ]]; then
  PATH=${rvm_path}/wrappers/${$APP}:$PATH
fi

APP_DIR="/data/${APP}"
APP_ROOT="${APP_DIR}/current"

USER=`stat -c"%U" $APP_DIR`
HOME="/home/$USER" ; export HOME

GEMFILE="$APP_ROOT/Gemfile"
BUNDLER=""
if [ -f $GEMFILE ];then
  BUNDLER="bundle exec"
fi

LOG_FILE="/var/log/engineyard/resque/$APP/resque-scheduler.log"
COMMAND="RAILS_ENV=$ENV $BUNDLER rake resque:scheduler --trace"
PID_FILE="/var/run/engineyard/resque/$APP/resque-scheduler.pid"

# handle the third param, don't start if already existing
case "$ACTION" in
  start)
    echo "Starting Resque Scheduler"
    cd $APP_ROOT
    if [ -f $PID_FILE ]; then
      PID=`cat $PID_FILE`
      if [ -d /proc/$PID ]; then
        echo "Resque Scheduler is already running."
        exit 1
      fi
      rm -f $PID_FILE
    fi
    touch $LOG_FILE
    logger -t "monit-resque-scheduler[$$]" "Starting with: ${COMMAND}"
    exec su -c"$COMMAND" $USER >> $LOG_FILE 2>&1 &
    echo $! > $PID_FILE
    ;;
  stop)
    echo "Stopping Resque Scheduler"
    if [ -f $PID_FILE ]; then
      kill -15 `cat $PID_FILE` 2>/dev/null; true
    fi
    [ -e "$PID_FILE" ] && rm -f $PID_FILE
    exit 0
    ;;
  *)
    usage
    ;;
esac