#!/bin/sh
# ganeti node daemon starter script
# based on skeleton from Debian GNU/Linux
### BEGIN INIT INFO
# Provides:          ganeti
# Required-Start:    $syslog $remote_fs xend
# Required-Stop:     $syslog $remote_fs xend
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Ganeti Xen Cluster Manager
# Description:       Ganeti Xen Cluster Manager
### END INIT INFO

PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
DESC="Ganeti cluster"

GANETIRUNDIR="@LOCALSTATEDIR@/run/ganeti"

GANETI_DEFAULTS_FILE="@SYSCONFDIR@/default/ganeti"

NODED_NAME="ganeti-noded"
NODED="@PREFIX@/sbin/${NODED_NAME}"
NODED_PID="${GANETIRUNDIR}/${NODED_NAME}.pid"
NODED_ARGS=""

MASTERD_NAME="ganeti-masterd"
MASTERD="@PREFIX@/sbin/${MASTERD_NAME}"
MASTERD_PID="${GANETIRUNDIR}/${MASTERD_NAME}.pid"
MASTERD_ARGS=""

RAPI_NAME="ganeti-rapi"
RAPI="@PREFIX@/sbin/${RAPI_NAME}"
RAPI_PID="${GANETIRUNDIR}/${RAPI_NAME}.pid"
RAPI_ARGS=""

SCRIPTNAME="@SYSCONFDIR@/init.d/ganeti"

test -f $NODED || exit 0

. /lib/lsb/init-functions

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

check_config() {
    for fname in \
        "@LOCALSTATEDIR@/lib/ganeti/server.pem"
    do
        if ! [ -f "$fname" ]; then
            log_end_msg 0
            log_warning_msg "Config $fname not there, will not run."
            exit 0
        fi
    done
}

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

start_action() {
    # called as start_action daemon pidfile
    local daemon="$1"; shift
    local pidfile="$1"; shift
    log_action_begin_msg "$daemon"
    start-stop-daemon --start --quiet --exec "$daemon" --pidfile "$pidfile" \
        -- "$@"
    check_exitcode $?
}

stop_action() {
    # called as stop_action daemon pidfile
    log_action_begin_msg "$1"
    start-stop-daemon --stop --quiet --oknodo \
        --retry 30 --pidfile "$2"
    check_exitcode $?
}


case "$1" in
    start)
        log_daemon_msg "Starting $DESC" "$NAME"
        check_config
        start_action $NODED $NODED_PID $NODED_ARGS
        start_action $MASTERD $MASTERD_PID $MASTERD_ARGS
        start_action $RAPI $RAPI_PID $RAPI_ARGS
        ;;
    stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        stop_action $RAPI $RAPI_PID
        stop_action $MASTERD $MASTERD_PID
        stop_action $NODED $NODED_PID
        ;;
    restart|force-reload)
        log_daemon_msg "Reloading $DESC"
        stop_action $RAPI $RAPI_PID
        stop_action $MASTERD $MASTERD_PID
        stop_action $NODED $NODED_PID
        check_config
        start_action $NODED $NODED_PID
        start_action $MASTERD $MASTERD_PID
        start_action $RAPI $RAPI_PID
        ;;
    *)
        log_success_msg "Usage: $SCRIPTNAME {start|stop|force-reload|restart}"
        exit 1
        ;;
esac

exit 0