#! /bin/sh
#
# Copyright (c) 2014 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#
# chkconfig: - 87 87
# processname: sm-watchdog
# description: Service Management Watchdog
#
### BEGIN INIT INFO
# Description: sm-watchdog
#
# Short-Description: Service Management Watchdog
# Provides: sm-watchdog
# Required-Start: $network
# Should-Start: $syslog
# Required-Stop: $network
# Default-Start: 3 5
# Default-Stop: 0 6
### END INIT INFO

. /etc/init.d/functions

RETVAL=0

SM_WATCHDOG_NAME="sm-watchdog"
SM_WATCHDOG="/usr/bin/${SM_WATCHDOG_NAME}"
SM_WATCHDOG_PIDFILE="/var/run/${SM_WATCHDOG_NAME}.pid"

if [ ! -e "${SM_WATCHDOG}" ]
then
    logger "${SM_WATCHDOG} is missing"
    exit 5 
fi

PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/bin

case "$1" in
    start)
        echo -n "Starting ${SM_WATCHDOG_NAME}: "
        if [ -n "`pidof ${SM_WATCHDOG}`" ]
        then
           # PMOND might have restarted SM-WATCHDOG already.
            RETVAL=0
        else
            start-stop-daemon --start -b -x ${SM_WATCHDOG}
            RETVAL=$?
        fi
        if [ ${RETVAL} -eq 0 ]
        then
            echo "OK"
        else
            echo "FAIL"
            RETVAL=1
        fi
        ;;

    stop)
        echo -n "Stopping ${SM_WATCHDOG_NAME}: "
        if [ -n "`pidof ${SM_WATCHDOG}`" ]
        then
            killproc ${SM_WATCHDOG}
        fi

        SHUTDOWN_TIMEOUT=5
        count=0
        while [ ${count} -lt ${SHUTDOWN_TIMEOUT} ]
        do
            pidof ${SM_WATCHDOG} &> /dev/null
            rc=$?
            if [ ${rc} -eq 1 ]
            then
                echo "OK"
                break
            fi
            count=`expr ${count} + 1`
            sleep 1
        done

        pidof ${SM_WATCHDOG} &> /dev/null
        rc=$?
        if [ ${rc} -eq 0 ]
        then
            echo "FAIL"
            RETVAL=7
        fi

        rm -f ${SM_WATCHDOG_PIDFILE}
        ;;

    status)
        pid=`cat ${SM_WATCHDOG_PIDFILE} 2>/dev/null`
        if [ -n "${pid}" ]
        then
           if ps -p ${pid} &>/dev/null
           then
              echo "${SM_WATCHDOG_NAME} is running"
              RETVAL=0
           else
              echo "${SM_WATCHDOG_NAME} is not running but has pid file"
              RETVAL=1
           fi
        else
           echo "${SM_WATCHDOG_NAME} is not running"
           RETVAL=3
        fi
        ;;

    restart)
        $0 stop
        sleep 1
        $0 start
        ;;

    reload)
        echo "${SM_WATCHDOG_NAME} reload"
        $0 restart
        ;;

    force-reload)
        echo "${SM_WATCHDOG_NAME} force-reload"
        $0 restart
        ;;

    *)
        echo "usage: $0 { start | stop | status | restart | reload | force-reload }"
        ;;
esac

exit ${RETVAL}