#! /bin/sh
### BEGIN INIT INFO
# Provides:          tomcat
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: tomcat init script
# Description: tomcat init script
### END INIT INFO

#CATALINA_HOME=/opt/apache-tomcat-7.0.29
RUN_AS_USER=tomcat
#PID_FILE=/var/run/tomcat.pid


SCRIPT="$0"

# SCRIPT may be an arbitrarily deep series of symlinks. Loop until we have the concrete path.
while [ -h "$SCRIPT" ] ; do
  ls=`ls -ld "$SCRIPT"`
  # Drop everything prior to ->
  link=`expr "$ls" : '.*-> \(.*\)$'`
  if expr "$link" : '/.*' > /dev/null; then
    SCRIPT="$link"
  else
    SCRIPT=`dirname "$SCRIPT"`/"$link"
  fi
done

SCRIPT_DIR=`dirname "$SCRIPT"`

# Only set CATALINA_HOME if not already set
[ -z "$TOMCAT_HOME" ] && TOMCAT_HOME=`cd "$SCRIPT_DIR/.." >/dev/null; pwd`

# Only set PID_FILE if not already set
[ -z "$PID_FILE" ] && PID_FILE=`cd "$SCRIPT_DIR" >/dev/null; pwd`/tomcat.pid

export CATALINA_PID="$PID_FILE"

TOMCAT_SCRIPT="$TOMCAT_HOME/bin/catalina.sh"


# Check for tomcat script  
if [ ! -x "$TOMCAT_SCRIPT" ]; then
   echo "Cannot find $TOMCAT_SCRIPT"
   echo "The file is absent or does not have execute permission"
   exit 1
fi

start() {
  if [ -f "/sbin/runuser" ]; then
    /sbin/runuser $RUN_AS_USER -s /bin/sh -c "$TOMCAT_SCRIPT start"
  else
    su $RUN_AS_USER -s /bin/sh -c "$TOMCAT_SCRIPT start"
  fi
  RETVAL=$?
}

stop() {
  if [ -f "/sbin/runuser" ]; then
    /sbin/runuser $RUN_AS_USER -s /bin/sh -c "$TOMCAT_SCRIPT stop"
  else
    su $RUN_AS_USER -s /bin/sh -c "$TOMCAT_SCRIPT stop"
  fi
  RETVAL=$?
}

restart() {
  stop
  sleep 1
  start
}

status() {
  if [ -f $PID_FILE ]; then
    PID=`cat $PID_FILE`
    if [ -z "`ps axf | grep $PID | grep -v grep`" ]; then
      echo "Not running, but PID_FILE exists"
    else
      echo "Running ($PID)"
    fi
  else
    echo "Not running"
  fi
}

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

exit $RETVAL