#!/bin/sh
#
# ganeti       ganeti node daemon starter script
#
# chkconfig: 345 97 03
# description: Ganeti Cluster Manager
# processname: ganeti-noded
# processname: ganeti-masterd
# processname: ganeti-rapi
# processname: ganeti-confd

# 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 "$DAEMON_UTIL" ] && DAEMON_UTIL="/usr/lib/ganeti/daemon-util"

test -f ${DAEMON_UTIL} || exit 0

RETVAL=0

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";
    echo -n $"Starting ${daemon}: "
    ${DAEMON_UTIL} start "$@"
    check_exitcode $?
    RETVAL=$?
    echo
    return $RETVAL
}

stop_action() {
    # called as stop_action daemon-name
    local daemon="$1"
    echo -n $"Stopping ${daemon}: "
    ${DAEMON_UTIL} stop "$@"
    check_exitcode $?
    echo
    return $RETVAL
}

status_action() {
    # called as status_action daemon-name
    local daemon="$1"
    ${DAEMON_UTIL} check "${@}"
    return $?
}

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

start_all() {
    if ! ${DAEMON_UTIL} check-config; then
        action "Incomplete configuration, will not run." false
        exit 0
    fi

    for i in $(${DAEMON_UTIL} list-start-daemons); do
        maybe_do "$1" start_action $i
    done
    RETVAL=$?
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/ganeti
    return $RETVAL
}

stop_all() {
    for i in $(${DAEMON_UTIL} list-stop-daemons); do
        maybe_do "$1" stop_action $i
    done
    RETVAL=$?
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/ganeti
    return $RETVAL
}

status_all() {
    for i in $(${DAEMON_UTIL} list-start-daemons); do
        maybe_do "$1" status_action $i
    done
    RETVAL=$?
    return $RETVAL
}

if [ -n "$2" ] && ! errmsg=$(${DAEMON_UTIL} is-daemon-name "$2" 2>&1); then
    action "${errmsg}" false
    exit 1
fi

case "$1" in
    start)
        start_all "$2"
        ;;
    stop)
        stop_all "$2"
        ;;
    restart|force-reload)
        stop_all "$2"
        start_all "$2"
        ;;
    status)
        status_all "$2"
        ;;
    *)
        echo "Usage: $0 {start|stop|force-reload|restart|status}"
        exit 1
        ;;
esac

exit 0