dm-fs-service

#!/bin/sh

#
# dm-fs-service
#
# Starts the DM FileSystem Service
#
# chkconfig: 345 98 98
# description: controls DM FileSystem Service

### BEGIN INIT INFO
# Provides: dm-fs-service
# Required-Start: $local_fs dm-postgresql
# Required-Stop: $local_fs
# Default-Start:  2 3 4 5
# Default-Stop: 0 1 6
# Description: controls DM FileSystem Service
### END INIT INFO

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

# For SELinux we need to use 'runuser' not 'su'
SU=su
if [ -x /sbin/runuser ]; then
    SU=runuser
fi

# Check if we are root before running command
runCommand() {
    _cmd="$@"
    echo "COMMAND: $_cmd"
    if [ `id -u` = 0 ]; then
        $SU -l $DM_USER -c "_$cmd" 
    else
        eval "$_cmd" 
    fi
}

# Set defaults for configuration variables
if [ -z $DM_ROOT_DIR ]; then
    myDir=`dirname $0`
    currentDir=`pwd` && cd $myDir/../..
    export DM_ROOT_DIR=`pwd`
    cd $currentDir
fi
DM_SETUP_FILE=$DM_ROOT_DIR/setup.sh
if [ ! -f $DM_SETUP_FILE ]; then
    echo "Setup file $DM_SETUP_FILE does not exist."
    exit 2
fi
. $DM_SETUP_FILE > /dev/null

mkdir -p ${DM_ROOT_DIR}/var/run
mkdir -p ${DM_ROOT_DIR}/var/log

#DM_USER=dm
DM_USER=`whoami`
DM_PORT=22236   # 222-DM
DM_HOST=0.0.0.0
DAEMON_CMD=${DM_ROOT_DIR}/lib/python/dm/fs_service/service/fsService.py
DAEMON_NAME="DmFsService"
PIDFILE=${DM_ROOT_DIR}/var/run/dm_fs_service.pid
DAEMON_ARGS="-d -p $PIDFILE --port $DM_PORT --host $DM_HOST --n-server-threads 12"
export DM_LOG_CONFIG_FILE=${DM_ROOT_DIR}/etc/dm.fsService.log.conf

# Determine SSL flags:
#   DM_SERVICE_PROTOCOL=https
#   DM_SERVICE_SSL_CERT_FILE=<cert path>
#   DM_SERVICE_SSL_KEY_FILE=<key path>
#   DM_SSL_CA_CERT_FILE=<ca cert path> (enables checking client certificates)

if [ "$DM_SERVICE_PROTOCOL" = "https" ]; then
    if [ -z "$DM_SERVICE_SSL_CERT_FILE" ]; then
        echo "Cannot start service using SSL: DM_SERVICE_SSL_CERT_FILE is not defined." && exit 2
    fi
    if [ -z "$DM_SERVICE_SSL_KEY_FILE" ]; then
        echo "Cannot start service using SSL: DM_SERVICE_SSL_KEY_FILE is not defined." && exit 2
    fi
    DAEMON_ARGS="$DAEMON_ARGS -c $DM_SERVICE_SSL_CERT_FILE -k $DM_SERVICE_SSL_KEY_FILE"

    # Client certificate will be checked if DM_SSL_CA_CERT_FILE is provided.
    if [ ! -z "$DM_SSL_CA_CERT_FILE" ]; then
        DAEMON_ARGS="$DAEMON_ARGS -C $DM_SSL_CA_CERT_FILE"
    fi
fi

RETVAL=0
start() {
    # Check if service is already running
    status -p $PIDFILE > /dev/null 2>&1
    if [ $? -ne 0 ]; then
        echo -n $"Starting $DAEMON_NAME daemon: "   
        runCommand ${DAEMON_CMD} ${DAEMON_ARGS}
        RETVAL=$?
        [ $RETVAL -eq 0 ] &&  success $"$DAEMON_NAME startup" || failure $"$DAEMON_NAME startup"
        echo
    fi
    return $RETVAL
}

stop() {
    status -p $PIDFILE > /dev/null 2>&1
    if [ $? -eq 0 ]; then
        echo -n $"Stopping $DAEMON_NAME daemon: "
        PID=`cat $PIDFILE`
        kill $PID
        RETVAL=$?
        [ $RETVAL -eq 0 ] && rm -f $PIDFILE && success $"$DAEMON_NAME shutdown" || failure $"$DAEMON_NAME shutdown"
        echo
    fi
    return $RETVAL
}

restart() {
    stop
    start
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        restart
        ;;
    status)
        status -p $PIDFILE "$DAEMON_NAME"
        RETVAL=$?
        ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart}"
        RETVAL=2
esac

exit $RETVAL