psm_init.template #2

#!/bin/bash

# Use chkconfig --add psm to set up the script to start and stop automatically.
# P4Search Init Script.
# chkconfig: 345 91 29
# description: Start P4Search Monitor for instance REPL_SDP_INSTANCE.

# Load SDP controlled shell environment.
source /p4/common/bin/p4_vars REPL_SDP_INSTANCE ||\
   { echo -e "\nError: Failed to load SDP environment for instance REPL_SDP_INSTANCE.\n"; exit 1; }

source $P4CBIN/ps_functions.sh ||\
   { echo -e "\nError: Failed to load SDP ps_functions.sh lib.\n"; exit 1; }

if [[ $(id -u) -eq 0 ]]; then
   exec su - $OSUSER -c "$0 $*"
elif [[ $(id -u -n) != $OSUSER ]]; then
   echo "$0 can only be run by root or $OSUSER"
   exit 1
fi

export PSM_ROOT=${P4HOME}}/psm/
export RACK_ENV=production
export THISSCRIPT=${0##*/}

pid=0
GetPID() {
     pid=`ps ax | grep ruby | grep psm | grep -v grep | awk '{print $1;}'`
}

Status() {
     GetPID
     if [ "q$pid" = q ] ; then
      echo "psm is stopped"
     else
      echo "psm ($pid) is running"
     fi
     exit 0
}

Start() {
     psm &
     exit $?
}

Stop() {
     GetPID
     kill $pid
     exit $?
}

Usage() {
     echo -e "\nUsage: $THISSCRIPT {start|stop|status|restart}\n"
     exit 100
}

if [ $# != 1 ] ; then
     Usage
fi
case ${1:-status} in
     reload)
      GetPID
      kill -HUP $pid
      opid=$pid
      GetPID
      if [ "q$pid" != q -a $pid = $opid ] ; then
        echo "psm reloaded"
      else
        echo "psm not running"
      fi
      ;;
     restart)
      Stop
      Start
      ;;
     start)
      Start
      ;;
     status)
      Status
      ;;
     stop)
      Stop
      ;;
     *)
      Usage
      ;;
esac