salt-common/sls/xen/xendomains.initd

#!/sbin/openrc-run
# -*- mode: shell-script -*-
# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2


extra_commands="status bringup"

depend() {
    need xenstored
    after dhcp xend xenconsoled
}

get_domname() {
    local name_from_file=$(sed -rn 's/^name\W*=\W*\"?([[:alnum:]_\.-]+)\"?\W*;?/\1/p' "${1}" | tail -n 1)
    
    if [ -z ${name_from_file} ] ; then
	basename "${1}"
    else
	echo ${name_from_file}	
    fi
}

is_running() {
    /usr/sbin/xl list "${1}" >/dev/null 2>&1
}

using_screen() {
    yesno SCREEN
    use_screen=$?
    return $use_screen
}

set_screen_cmd() {
    screen_cmd="screen -c ${SCREENRC:-/dev/null} -q -r ${SCREEN_NAME:=xen} -X"
}

set_autodir() {
    AUTODIR="${AUTODIR:=/etc/xen/auto}"
}

domain_start() {
    local conf="${1}"
    local name="${2}"
    ebegin "Starting domain ${name}"
    if [ $use_screen -eq 0 ]; then
	${screen_cmd} screen -t "${name}" xl create "${conf}" -c
    else
	xl create --quiet "${conf}"
    fi
    eend $?
}

domain_stop() {
    local name="${1}"
    xl shutdown -w ${name} >/dev/null
}

bringup() {
    set_autodir
    if using_screen; then
	set_screen_cmd
    fi
    # Create all domains with config files in AUTODIR.
    for conf in $(ls "${AUTODIR}"/*.cfg 2>/dev/null | sort); do
	name=$(get_domname "${conf}")
	if ! is_running ${name}; then
	    eerror "Domain ${name} is not running"
	    domain_start "${conf}" ${name}
	fi
    done
}

start() {
    set_autodir
    einfo "Starting Xen domains from ${AUTODIR}"
    if using_screen; then
	set_screen_cmd
	if ! ${screen_cmd} sleep 0 >/dev/null 2>&1 ; then
	    ebegin "Creating screen session to hold domain consoles"
	    (  screen -c ${SCREENRC:-/dev/null} -d -m -S ${SCREEN_NAME} -t dom0 \
		    && sleep 5 \
		    && ${screen_cmd} zombie dr \
		    && logrotate -f /etc/xen/xen-consoles.logrotate \
		    && ${screen_cmd} logfile /var/log/xen-consoles/%t.log \
		    && ${screen_cmd} logfile flush ${SCREEN_LOG_INTERVAL:-1} \
		    && ${screen_cmd} log on \
		    && ${screen_cmd} deflog on ) >/dev/null
	fi
	if [ $? -ne 0 ] ; then
	    eend 1
	    return 1
	else
	    eend
	fi
    fi
    for conf in $(ls "${AUTODIR}"/*.cfg 2>/dev/null | sort); do
	name=$(get_domname "${conf}")
	if is_running "${name}"; then
	    einfo "Not starting domain ${name} - already running"
	else
	    domain_start "${conf}" ${name}
	fi
    done
}

stop() {
    set_autodir
    if using_screen; then
	set_screen_cmd
    fi
    einfo "Shutting down Xen domains from ${AUTODIR:=/etc/xen/auto}"
    # Stop all domains with config files in AUTODIR.
    DOMAINS="$(ls "${AUTODIR:=/etc/xen/auto}/"* 2>/dev/null | sort -r)"

    if yesno PARALLEL_SHUTDOWN; then
	for conf in $DOMAINS; do
	    name=$(get_domname "${conf}")
	    if is_running ${name} ; then
		einfo "Asking domain ${name} to shutdown"
		xl shutdown -w ${name} >/dev/null &
	    else
		einfo "Domain ${name} is not running"
	    fi
	done
	ebegin "Waiting for shutdown of domains"
	wait
	eend $?
    else
	for conf in $DOMAINS; do
	    name=$(get_domname "${conf}")
	    if is_running ${name} ; then
		ebegin "Waiting for domain ${name} to shutdown"
		xl shutdown -w ${name} >/dev/null
		eend $?
	    else
		einfo "Domain ${name} is not running"
	    fi
	done
    fi
    if [ $use_screen -eq 0 ]; then
	if ${screen_cmd} sleep 0 >/dev/null 2>&1 ; then
	    ebegin "Closing screen session ${SCREEN_NAME}"
	    ${screen_cmd} quit
	    eend $?
	fi
    fi
}

status() {
    ret=0
    for conf in $(ls "${AUTODIR}"/*.cfg 2>/dev/null | sort); do
	name=$(get_domname "${conf}")
	if is_running ${name}; then
	    einfo "Domain ${name} is running"
	else
	    eerror "Domain ${name} is not running"
	    ret=1
	fi
    done
    return $ret
}