sidekiq init script

#!/bin/bash
# sidekiq Init script for Sidekiq
# chkconfig: 345 100 75
#
# Description: Starts and Stops Sidekiq message processor for Stratus application.
#
# User-specified exit parameters used in this script:
#
# Exit Code 5 - Incorrect User ID
# Exit Code 6 - Directory not found


# You will need to modify these
APP="myapp"
AS_USER="myuser"
APP_DIR="/var/www/${APP}/current"

APP_CONFIG="${APP_DIR}/config"
LOG_FILE="$APP_DIR/log/sidekiq.log"
LOCK_FILE="$APP_DIR/${APP}-lock"
PID_FILE="$APP_DIR/${APP}.pid"
GEMFILE="$APP_DIR/Gemfile"
SIDEKIQ="sidekiq"
APP_ENV="production"
BUNDLE="bundle"

START_CMD="$BUNDLE exec $SIDEKIQ -e $APP_ENV -P $PID_FILE"
CMD="cd ${APP_DIR}; ${START_CMD} >> ${LOG_FILE} 2>&1 &"

RETVAL=0


start() {

 status
 if [ $? -eq 1 ]; then

 [ `id -u` == '0' ] || (echo "$SIDEKIQ runs as root only .."; exit 5)
 [ -d $APP_DIR ] || (echo "$APP_DIR not found!.. Exiting"; exit 6)
 cd $APP_DIR
 echo "Starting $SIDEKIQ message processor .. "

 su -c "$CMD" - $AS_USER

 RETVAL=$?
 #Sleeping for 8 seconds for process to be precisely visible in process table - See status ()
 sleep 8
 [ $RETVAL -eq 0 ] && touch $LOCK_FILE
 return $RETVAL
 else
 echo "$SIDEKIQ message processor is already running .. "
 fi


}

stop() {

 echo "Stopping $SIDEKIQ message processor .."
 SIG="INT"
 kill -$SIG `cat $PID_FILE`
 RETVAL=$?
 [ $RETVAL -eq 0 ] && rm -f $LOCK_FILE
 return $RETVAL
}

status() {

 ps -ef | grep 'sidekiq [0-9].[0-9].[0-9]' | grep -v grep
 return $?
}


case "$1" in
 start)
 start
 ;;
 stop)
 stop
 ;;
 status)
 status

 if [ $? -eq 0 ]; then
 echo "$SIDEKIQ message processor is running .."
 RETVAL=0
 else
 echo "$SIDEKIQ message processor is stopped .."
 RETVAL=1
 fi
 ;;
 *)
 echo "Usage: $0 {start|stop|status}"
 exit 0
 ;;
esac
exit $RETVAL