#!/bin/sh
#
# ganeti       ganeti node daemon starter script
#
# chkconfig: 345 20 80
# description: Ganeti Xen Cluster Manager
# processname: ganeti-noded
# processname: ganeti-masterd
# processname: ganeti-confd
# processname: ganeti-rapi

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

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ $NETWORKING = "no" ] && exit 0

# Check for and source configuration file otherwise set defaults
[ -f /etc/sysconfig/ganeti ] && . /etc/sysconfig/ganeti

# Configurations to the ganeti
[ -z "$GANETIRUNDIR" ] && GANETIRUNDIR="/var/run/ganeti"
[ -z "$GANETI_DEFAULTS_FILE" ] && GANETI_DEFAULTS_FILE="/etc/default/ganeti"
[ -z "$GANETI_STATEDIR" ] && GANETI_STATEDIR="/var/lib/ganeti"

[ -z "$NODED" ] && NODED="ganeti-noded"
[ -z "$NODED_ARGS" ] && NODED_ARGS=""

[ -z "$MASTERD" ] && MASTERD="ganeti-masterd"
[ -z "$MASTERD_ARGS" ] && MASTERD_ARGS=""

[ -z "$CONFD" ] && CONFD="ganeti-confd"
[ -z "$CONFD_ARGS" ] && CONFD_ARGS=""

[ -z "$RAPI" ] && RAPI="ganeti-rapi"
[ -z "$RAPI_ARGS" ] && RAPI_ARGS=""

test -f `type -path $NODED` || exit 0

if [ -s $GANETI_DEFAULTS_FILE ]; then
    . $GANETI_DEFAULTS_FILE
fi

RETVAL=0

check_config() {
    for fname in "$GANETI_STATEDIR/server.pem"
    do
        if ! [ -f "$fname" ]; then
            action $"Config $fname not there, will not run." false
            exit 0
        fi
    done
}

check_exitcode() {
    RC=$1
    case $RC in
        0)
            success && return 0
            ;;
        11)
            success $"not master" && return 0
            ;;
        *)
            failure $"exit code $RC" && return 1
            ;;
    esac
}

start_action() {
    # called as start_action daemon-name
    local daemon="$1"; shift
    echo -n $"Starting ${daemon}: "
    ${daemon} "$@"
    check_exitcode $?
    RETVAL=$?
    echo
    return $RETVAL
}

stop_action() {
    # called as stop_action daemon-name
    local daemon="$1"
    echo -n $"Stopping ${daemon}: "
    killproc -p "${GANETIRUNDIR}/${daemon}.pid" ${daemon}
    check_exitcode $?
    echo
    return $RETVAL
}

maybe_do() {
    requested="$1"; shift
    action="$1"; shift
    target="$1"
    if [ -z "$requested" -o "$requested" = "$target" ]; then
        $action "$@"
    fi
}

if [ -n "$2" -a \
    "$2" != "$NODED" -a \
    "$2" != "$MASTERD" -a \
    "$2" != "$RAPI" ]; then
    action $"Unknown daemon '$2' requested" false
    exit 1
fi

start() {
    check_config
    maybe_do "$2" start_action ${NODED} ${NODED_ARGS}
    RETVAL=$?
    maybe_do "$2" start_action ${MASTERD} ${MASTERD_ARGS}
#    maybe_do "$2" start_action ${CONFD} ${CONFD_ARGS}
    maybe_do "$2" start_action ${RAPI} ${RAPI_ARGS}
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/ganeti
    return $RETVAL
}

stop() {
    maybe_do "$2" stop_action ${RAPI}
#    maybe_do "$2" stop_action ${CONFD}
    maybe_do "$2" stop_action ${MASTERD}
    maybe_do "$2" stop_action ${NODED}
    RETVAL=$?
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/ganeti
    return $RETVAL
}

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

exit 0