#! /bin/sh

#######################################################################
# RCSIDENT("$SiLK: rwflowappend.init.d.in 14083 2009-04-21 16:34:30Z mthomas $")
#######################################################################

# rwflowappend start/control script
#
# /etc/init.d/rwflowappend
# chkconfig: - 20 95
# description: Start rwflowappend program

MYNAME=rwflowappend

# Determine whether our name has an addendum
BASENAME='s:\(.*/\)*\([^/]*\)$:\2:'
SEDEXT1='s/\(.*\)\.init\.d$/\1/'
SEDEXT2='s/\(.*\)\.sh$/\1/'
SCRIPTNAME=`echo $0 | sed ${BASENAME} | sed ${SEDEXT1} | sed ${SEDEXT2}`
PRETEST="\\(${MYNAME}\\)\\(-.*\\)*\$"
SUFTEST="${MYNAME}\\(-.*\\)\$"
PREFIX=`expr "x${SCRIPTNAME}" : "x${PRETEST}"`
SUFFIX=`expr "x${SCRIPTNAME}" : "x${SUFTEST}"`

if [ "x$PREFIX" != "x$MYNAME" ] ; then
    SUFFIX=
fi

# SCRIPT_CONFIG_LOCATION is the directory where the ${MYNAME}.conf
# file is located.  It can be set via an environment variable.  If the
# envar is not set, then DEFAULT_SCRIPT_CONFIG_LOCATION is used.  If
# that is not set as well, the --sysconfdir value passed to configure
# is used, which defaults to ${prefix}/etc.
DEFAULT_SCRIPT_CONFIG_LOCATION=
if [ "x$SCRIPT_CONFIG_LOCATION" = "x" ] ; then
    if [ "x$DEFAULT_SCRIPT_CONFIG_LOCATION" = "x" ] ; then
        prefix="/usr/local"
        SCRIPT_CONFIG_LOCATION="${prefix}/etc"
    else
        SCRIPT_CONFIG_LOCATION="$DEFAULT_SCRIPT_CONFIG_LOCATION"
    fi
fi
SCRIPT_CONFIG=${SCRIPT_CONFIG_LOCATION}/${MYNAME}${SUFFIX}.conf

#######################################################################

if [ ! -f "${SCRIPT_CONFIG}" ] ; then
    echo "$0: ${SCRIPT_CONFIG} does not exist."
    exit 0
fi

. "${SCRIPT_CONFIG}"

if [ "x$ENABLED" = "x" ] ; then
    exit 0
fi


check_empty()
{
    if [ "x$2" = "x" ] ; then
        echo "$0: the \${$1} variable has not been set."
        exit 1
    fi
}

check_dir()
{
    check_empty "$1" "$2"
    if [ ! -d "$2" ] ; then
        if [ "${CREATE_DIRECTORIES}" = "yes" ] ; then
            mkdir -p "$2" || { echo "$0: Could not create $2" ; exit 1 ; }
            chown -h "${USER}" "$2" || { echo "$0: Could not chown $2 to ${USER}"; exit 1 ; }
        else
            echo "$0: the $2 directory does not exist."
            exit 1
        fi
    else
        chown -h "${USER}" "$2" || { echo "$0: Could not chown $2 to ${USER}"; exit 1 ; }
    fi
}


RETVAL=0

PROG=rwflowappend
PROG_PATH="${APPENDER_BIN}/${PROG}"
PIDFILE="${PID_DIR}/${PROG}${SUFFIX}.pid"
LOG_BASENAME="${PROG}${SUFFIX}"
PROG_OPTIONS=""


if [ ! -x "${PROG_PATH}" ] ; then
    echo "$0: could not find an executable ${PROG_PATH}."
    exit 1
fi

check_dir   "PID_DIR"  "${PID_DIR}"

PROG_OPTIONS="${PROG_OPTIONS} --pidfile=${PIDFILE}"

case "${LOG_TYPE}" in 
    syslog) 
        LOG_EXTRA_OPTIONS="--log-destination=syslog"
        ;;
    legacy)
        check_dir "LOG_DIR" "${LOG_DIR}"
        LOG_EXTRA_OPTIONS="--log-directory=${LOG_DIR} --log-basename=${LOG_BASENAME}"
        ;;
    *) 
        echo "$0: Unexpected LOG_TYPE ${LOG_TYPE}."
        echo "Set to \"legacy\" or \"syslog\"."
        exit 1
        ;;
esac
PROG_OPTIONS="${PROG_OPTIONS} --log-level=${LOG_LEVEL} ${LOG_EXTRA_OPTIONS}"

check_dir "INCOMING_DIR"   "${INCOMING_DIR}"
check_dir "ERROR_DIR" "${ERROR_DIR}"
check_dir "DATA_ROOTDIR" "${DATA_ROOTDIR}"

PROG_OPTIONS="${PROG_OPTIONS} --incoming-directory=${INCOMING_DIR} --error-directory=${ERROR_DIR} --root-directory=${DATA_ROOTDIR}"

if [ "x${SITE_CONFIG}" != "x" ] ; then
    if [ -f "${SITE_CONFIG}" ] ; then
        PROG_OPTIONS="${PROG_OPTIONS} --site-config-file=${SITE_CONFIG}"
    else
        echo "$0: Site file ${SITE_CONFIG} does not exist."
        exit 1
    fi
fi

if [ "x${ARCHIVE_DIR}" != "x" ] ; then
    check_dir "ARCHIVE_DIR" "${ARCHIVE_DIR}"
    PROG_OPTIONS="${PROG_OPTIONS} --archive-directory=${ARCHIVE_DIR}"
fi
if [ "x${POST_COMMAND}" != "x" ]; then
    if [ "x${ARCHIVE_DIR}" = "x" ]; then
        echo "$0: Use of POST_COMMAND requires valid ARCHIVE_DIR"
        exit 1
    fi
    PROG_OPTIONS="${PROG_OPTIONS} --post-command='${POST_COMMAND}'"
fi
if [ "x${HOUR_COMMAND}" != "x" ]; then
    PROG_OPTIONS="${PROG_OPTIONS} --hour-file-command='${HOUR_COMMAND}'"
fi
if [ "x${COMPRESSION_TYPE}" != "x" ] ; then
    PROG_OPTIONS="${PROG_OPTIONS} --compression-method=${COMPRESSION_TYPE}"
fi
if [ "x${POLLING_INTERVAL}" != "x" ] ; then
    PROG_OPTIONS="${PROG_OPTIONS} --polling-interval=${POLLING_INTERVAL}"
fi



# Check if $pid is running
checkpid() {
    kill -0 $1 >/dev/null 2>&1 && return 0
    return 1
}


# Get the process id from the PIDFILE
getPid() {
    RETVAL=1
    if [ -f $PIDFILE ] ; then
        RETVAL=2
        read pid < ${PIDFILE}
        if [ "X$pid" != "X" ] ; then
            RETVAL=3
            # Found a pid
            if checkpid $pid ; then
                echo $pid
                RETVAL=0
            fi
        fi
    fi
    echo ""
    return $RETVAL
}


status() {
    if [ $# -gt 0 ] ; then
        doEcho=0
    else
        doEcho=1
    fi

    # first check if the process is running
    pid=`getPid`
    RETVAL=$?

    if [ $doEcho -eq 1 ] ; then
        case "$RETVAL" in
          0)
            echo "${PROG} is running with pid $pid"
            ;;
          1)
            echo "${PROG} is stopped"
            ;;
          *)
            echo "${PROG} is dead but pid file exists"
            ;;
        esac
    fi
    return $RETVAL
}


start() {
    (status 'silent')
    pStat=$?
    if [ $pStat -eq 0 ] ; then
        status
        return 0
    fi

    /bin/echo -n "Starting ${PROG}:	"
    /bin/rm -f ${PIDFILE} 2> /dev/null

    if [ X`whoami` = "X${USER}" ] ; then
        eval "${PROG_PATH} ${PROG_OPTIONS} ${EXTRA_OPTIONS} &"
    else
        su - ${USER} -c "${PROG_PATH} $PROG_OPTIONS $EXTRA_OPTIONS &"
    fi
    RETVAL=$?
    if [ "$RETVAL" -ne "0" ] ; then
        echo "[Failed]"
    else
        sleep 1
        PID=`getPid`
        if [ "x$PID" = "x" ] ; then
            echo "[Failed]"
            RETVAL=1
        else
            echo '[OK]'
        fi
    fi
    return $RETVAL
}


stop() {
    Pid=`getPid`
    if [ "X${Pid}" = "X" ] ; then
        echo "${PROG} not running"
        return 1
    fi
    /bin/echo -n "Stopping ${PROG}:	"
    /bin/kill -s INT $Pid
    # because rwflowpack waits to reap children, wait before testing
    echo WARNING sleeping for 10 seconds
    sleep 10
    if checkpid $Pid && sleep 5 \
        && checkpid $Pid && sleep 5 \
        && checkpid $Pid
    then
        /bin/kill -s KILL $Pid
        sleep 1
    fi
    (checkpid $Pid)
    RETVAL=$?
    [ "$RETVAL" -eq "1" ] && echo '[OK]' || echo '[FAILED]'
    /bin/rm -f ${PIDFILE} 2> /dev/null
    return $RETVAL
}


restart(){
    (stop)
    (start)
}


case "$1" in
  start)
    (start)
    RETVAL=$?
    ;;

  stop)
    (stop)
    RETVAL=$?
    ;;

  restart)
    (restart)
    RETVAL=$?
    ;;

  status)
    (status)
    RETVAL=$?
    ;;

  *)
    echo $"Usage: $0 {start|stop|status|restart}"
    RETVAL=1
    ;;
esac

exit $RETVAL


#######################################################################
# @OPENSOURCE_HEADER_START@
#
# Use of the SILK system and related source code is subject to the terms 
# of the following licenses:
#
# GNU Public License (GPL) Rights pursuant to Version 2, June 1991
# Government Purpose License Rights (GPLR) pursuant to DFARS 252.225-7013
#
# NO WARRANTY
#
# ANY INFORMATION, MATERIALS, SERVICES, INTELLECTUAL PROPERTY OR OTHER 
# PROPERTY OR RIGHTS GRANTED OR PROVIDED BY CARNEGIE MELLON UNIVERSITY 
# PURSUANT TO THIS LICENSE (HEREINAFTER THE "DELIVERABLES") ARE ON AN 
# "AS-IS" BASIS. CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY 
# KIND, EITHER EXPRESS OR IMPLIED AS TO ANY MATTER INCLUDING, BUT NOT 
# LIMITED TO, WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, 
# MERCHANTABILITY, INFORMATIONAL CONTENT, NONINFRINGEMENT, OR ERROR-FREE 
# OPERATION. CARNEGIE MELLON UNIVERSITY SHALL NOT BE LIABLE FOR INDIRECT, 
# SPECIAL OR CONSEQUENTIAL DAMAGES, SUCH AS LOSS OF PROFITS OR INABILITY 
# TO USE SAID INTELLECTUAL PROPERTY, UNDER THIS LICENSE, REGARDLESS OF 
# WHETHER SUCH PARTY WAS AWARE OF THE POSSIBILITY OF SUCH DAMAGES. 
# LICENSEE AGREES THAT IT WILL NOT MAKE ANY WARRANTY ON BEHALF OF 
# CARNEGIE MELLON UNIVERSITY, EXPRESS OR IMPLIED, TO ANY PERSON 
# CONCERNING THE APPLICATION OF OR THE RESULTS TO BE OBTAINED WITH THE 
# DELIVERABLES UNDER THIS LICENSE.
#
# Licensee hereby agrees to defend, indemnify, and hold harmless Carnegie 
# Mellon University, its trustees, officers, employees, and agents from 
# all claims or demands made against them (and any related losses, 
# expenses, or attorney's fees) arising out of, or relating to Licensee's 
# and/or its sub licensees' negligent use or willful misuse of or 
# negligent conduct or willful misconduct regarding the Software, 
# facilities, or other rights or assistance granted by Carnegie Mellon 
# University under this License, including, but not limited to, any 
# claims of product liability, personal injury, death, damage to 
# property, or violation of any laws or regulations.
#
# Carnegie Mellon University Software Engineering Institute authored 
# documents are sponsored by the U.S. Department of Defense under 
# Contract F19628-00-C-0003. Carnegie Mellon University retains 
# copyrights in all material produced under this contract. The U.S. 
# Government retains a non-exclusive, royalty-free license to publish or 
# reproduce these documents, or allow others to do so, for U.S. 
# Government purposes only pursuant to the copyright license under the 
# contract clause at 252.227.7013.
#
# @OPENSOURCE_HEADER_END@
#######################################################################
