dklab_realplexor.init

#!/bin/bash
# Start/stop the dklab_realplexor daemon.
#
# chkconfig: - 85 15
# description: Dklab Realplexor: Comet server which handles 1000000+ parallel browser connections.
# processname: dklab_realplexor.pl
# config: /etc/dklab_realplexor.conf
# pidfile: /var/run/dklab_realplexor_*.pid
#
### BEGIN INIT INFO
# Provides:          dklab_realplexor
# Required-Start:
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      1
# Short-Description: Dklab Realplexor Comet Server.
# Description:       Dklab Realplexor: Comet server which handles 1000000+ parallel browser connections.
### END INIT INFO

#
# If you store dklab_realplexor in a different location,
# it is recommended not to change CWD, but run:
#
# ln -s /path/to/your/dklab_realplexor /opt/dklab_realplexor
#
# If you want to change some variables, it is recommended
# to put these changes to /etc/default/YOUR_INIT_SCRIPT_NAME
# (typically /etc/default/dklab_realplexor). All variables
# defined there will override current script.
#
CWD="/opt/dklab_realplexor"

# Same as with additional config: better create symlink in /etc.
ADDCONFIG="/etc/dklab_realplexor.conf"

# Logging options. By default syslog is used, it allows easy log rotation.
# You may use $CONF variable to refer to the full config file path.
LOGTAG='realplexor/`basename $CONF`'
LOGPRI='local3.info'

# Prefix for PID file.
PIDPREFIX="/var/run/dklab_realplexor"

# Override settings if needed.
NAME=`basename $0`
if [ ${NAME:0:1} = "S" -o ${NAME:0:1} = "K" ]; then
    NAME=${NAME:3}
fi
[ -f /etc/default/${NAME} ] && . /etc/default/${NAME}
[ -f /etc/sysconfig/${NAME} ] && . /etc/sysconfig/${NAME}

# Script to execute.
if [ -x $CWD/dklab_realplexor ]; then
    BIN="$CWD/dklab_realplexor"
else
    BIN="/usr/bin/perl $CWD/dklab_realplexor.pl"
fi


start () {
    export CONF
    for CONF in $ADDCONFIG; do
        PIDFILE=${PIDPREFIX}_`basename $CONF`.pid
        PID=`cat $PIDFILE 2>/dev/null`
        if [ "$PID" != "" ] && kill -s 0 $PID 2>/dev/null; then
            echo "dklab_realplexor for $CONF is already running"
        else
            rm -f $PIDFILE 2>/dev/null
            cd $CWD && $BIN $CONF -p $PIDFILE 2>&1 | logger -p `eval "echo $LOGPRI"` -t `eval "echo $LOGTAG"` &
            sleep 1
            PID=`cat $PIDFILE 2>/dev/null`
            if [ "$PID" != "" ]; then
                echo "OK: $CONF"
            else
                echo "FAILED: $CONF; see logs"
            fi
        fi
    done
}

stop () {
    for CONF in $ADDCONFIG; do
        PIDFILE=${PIDPREFIX}_`basename $CONF`.pid
        PID=`cat $PIDFILE 2>/dev/null`
        if [ "$PID" == "" ]; then
            echo "dklab_realplexor for $CONF is not running (pid file is empty)"
        else
            kill $PID
            echo "OK: $CONF"
        fi
    done
}

reload () {
    for CONF in $ADDCONFIG; do
        PIDFILE=${PIDPREFIX}_`basename $CONF`.pid
        PID=`cat $PIDFILE 2>/dev/null`
        if [ "$PID" == "" ]; then
            echo "dklab_realplexor for $CONF is not running (pid file is empty)"
            start
        else
            # Send SIGHUP to process group.
            kill -s 1 $PID
            echo "OK: $CONF"
        fi
    done
}

case $1 in
    start)
        start
    ;;
    stop)
        stop
    ;;
    restart)
        stop
        sleep 2
        start
    ;;
    reload)
        reload
    ;;
    *)
        echo "Usage:"
        echo "  $0 {start|stop|restart|reload}"
        exit 1
    ;;
esac