init.d script for tomcat7 - something new but mostly borrowed

tomcat7.sh

#!/bin/bash
#
# tomcat
#
# chkconfig: 345 96 30
# description:  Start up the Tomcat servlet engine.
#
# processname: java
# pidfile: /var/run/tomcat.pid
#
### BEGIN INIT INFO
# Provides: tomcat
# Required-Start: $network $syslog
# Required-Stop: $network $syslog
# Should-Start: distcache
# Short-Description: start and stop Apache HTTP Server
# Description: implementation for Servlet 2.5 and JSP 2.1
## END INIT INFO

# Source function library.
. /etc/init.d/functions

## tomcat installation directory
PROCESS_NAME=tomcat7

CATALINA_HOME="/opt/tomcat7"

## run as a diffent user
TOMCAT_USER=tomcat

TOMCAT_BIN="$CATALINA_HOME/bin/catalina.sh"
# JRE_HOME=$JAVA_HOME
SHUTDOWN_WAIT=5;  # This is multiplied by two. The last half gets a countdown

##  Path to the pid, runnning info file
pidfile=${PIDFILE-/var/run/${PROCESS_NAME}.pid};
lockfile=${LOCKFILE-/var/lock/subsys/${PROCESS_NAME}};

RETVAL=0

case "$1" in
 start)
        PID=`pidofproc -p ${pidfile} ${PROCESS_NAME}`
        if [[ (-n ${PID}) && ($PID -gt 0) ]]; then
                logger -s "${PROCESS_NAME}(pid ${PID}) is  already running." >/dev/null 2>&1
                echo "${PROCESS_NAME}(pid ${PID}) is  already running."
                exit;
        fi
        if [ -f $CATALINA_HOME/bin/startup.sh ];
          then
            logger -s "Starting Tomcat" >/dev/null 2>&1
            echo "Starting tomcat"
            /bin/su -l ${TOMCAT_USER} -c "$CATALINA_HOME/bin/startup.sh -Dprocessname=${PROCESS_NAME}" >/dev/null 2>&1
            PID=`ps -eaf|grep processname=${PROCESS_NAME}|grep -v grep|awk '{print $2}'`
            RETVAL=$?
            [ $RETVAL = 0 ] && touch ${lockfile}
            [ $RETVAL = 0 ] && echo "${PID}" > ${pidfile}
            success
            echo "Tomcat has been started"
        fi
        ;;
stop)
  pid=`pidofproc -p ${pidfile} ${PROCESS_NAME}`

  if [ -n "$pid" ]
  then
    echo "Shutting down tomcat"

    su $TOMCAT_USER -c "JRE_HOME=$JRE_HOME $TOMCAT_BIN stop" >/dev/null 2>&1

    let kill_count=0;
    until [ "$(ps -p "$pid" | grep -c "$pid")" = '0' ] || [ $kill_count -gt $SHUTDOWN_WAIT ]
    do
      sleep 1
      let kill_count=$kill_count+1;
    done

    let kill_count=0;
    until [ "$(ps -p "$pid" | grep -c "$pid")" = '0' ] || [ $kill_count -gt $SHUTDOWN_WAIT ]
    do
      if [ $kill_count -lt 1 ];then
        echo -n "Killing in $SHUTDOWN_WAIT seconds"
      fi
      echo -n ".";
      sleep 1
      let kill_count=$kill_count+1;
    done


    if [ $kill_count -gt $SHUTDOWN_WAIT ];
    then
      echo ""
      /bin/kill -9 "$pid"
      sleep 1
    fi

    pid=`pidofproc -p ${pidfile} ${PROCESS_NAME}`
    if [ -n "$pid" ]
    then
      failure
      echo "Failed to shutdown Tomcat"
    fi
    success
    echo "Tomcat has been stopped"
  else
    echo "Tomcat is not running"
  fi
  ;;
 status)
        status -p ${pidfile} ${PROCESS_NAME}
        RETVAL=$?
        ;;
 restart)
         $0 stop
         $0 start
         ;;
version)
        if [ -f $CATALINA_HOME/bin/version.sh ];
          then
            logger -s "Display Tomcat Version"
            /bin/su -l ${TOMCAT_USER} -c "$CATALINA_HOME/bin/version.sh"
            RETVAL=$?
        fi
        ;;
 *)
         echo $"Usage: $0 {start|stop|restart|status|version}"
        exit 1
        ;;
esac
exit $RETVAL