#!/bin/sh
#
# lxc Start/Stop LXC autoboot containers
#
# chkconfig: 345 99 01
# description: Starts/Stops all LXC containers configured for autostart.
#
### BEGIN INIT INFO
# Provides: lxc
# Default-Start: 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Bring up/down LXC autostart containers
# Description: Bring up/down LXC autostart containers
### END INIT INFO

# set -x

sysconfdir="/etc"
bindir="/usr/bin"
localstatedir="/var"

# These can be overridden in /etc/sysconfig/lxc

# BOOTGROUPS - What groups should start on bootup?
#	Comma separated list of groups.
#	Leading comma, trailing comma or embedded double
#	comma indicates when the NULL group should be run.
# Example (default): boot the onboot group first then the NULL group
BOOTGROUPS="onboot,"

# SHUTDOWNDELAY - Wait time for a container to shut down.
#	ner shutdown can result in lengthy system
#	shutdown times.  Even 5 seconds per container can be
#	too long.
SHUTDOWNDELAY=5

# OPTIONS can be used for anything else.
#	If you want to boot everything then
#	options can be "-a" or "-a -A".
OPTIONS=

# STOPOPTS are stop options.  The can be used for anything else to stop.
#	If you want to kill containers fast, use -k
# --all         list all auto-started containers (ignore groups)
# --shutdown    shutdown the containers instead of starting them
STOPOPTS="--all --shutdown"

# Source function library.
test ! -r "$sysconfdir"/rc.d/init.d/functions ||
        . "$sysconfdir"/rc.d/init.d/functions

# Source any configurable options
test ! -r "$sysconfdir"/sysconfig/lxc ||
        . "$sysconfdir"/sysconfig/lxc

# Check for needed utility program
[ -x "$bindir"/lxc-autostart ] || exit 1

# If libvirtd is providing the bridge, it might not be
# immediately available, so wait a bit for it before starting
# up the containers or else any that use the bridge will fail
# to start
wait_for_bridge()
{
    [ -f "$sysconfdir"/lxc/default.conf ] || { return 0; }

    which ifconfig >/dev/null 2>&1
    if [ $? = 0 ]; then
        cmd="ifconfig -a"
    else
        which ip >/dev/null 2>&1
        if [ $? = 0 ]; then
            cmd="ip link list"
        fi
    fi
    [ -n cmd ] || { return 0; }

    BRNAME=`grep '^[ 	]*lxc.network.link' "$sysconfdir"/lxc/default.conf | sed 's/^.*=[ 	]*//'`
    if [ -z "$BRNAME" ]; then
	return 0
    fi

    for try in `seq 1 30`; do
	eval $cmd |grep "^$BRNAME" >/dev/null 2>&1
	if [ $? = 0 ]; then
	    return
	fi
	sleep 1
    done
}

# See how we were called.
case "$1" in
  start)
	[ ! -f "$localstatedir"/lock/subsys/lxc ] || { exit 0; }

	if [ -n "$BOOTGROUPS" ]
	then
		BOOTGROUPS="-g $BOOTGROUPS"
	fi

	# Start containers
	CONTAINERS_LIST=`/usr/bin/lxc-autostart $OPTIONS $BOOTGROUPS --list | tr '\n' ' '`
	# echo "DEBUG: CONTAINERS_LIST=${CONTAINERS_LIST}"
        run_cmd "$(nls "Starting LXC containers (%s) from groups: %s " "$CONTAINERS_LIST" "$BOOTGROUPS")" /usr/bin/lxc-autostart $OPTIONS $BOOTGROUPS
	touch "$localstatedir"/lock/subsys/lxc
	;;
  stop)
	if [ -n "$SHUTDOWNDELAY" ]
	then
		SHUTDOWNDELAY="-t $SHUTDOWNDELAY"
	fi

	# The stop is serialized and can take excessive time.  We need to avoid
	# delaying the system shutdown / reboot as much as we can since it's not
	# parallelized...  Even 5 second timout may be too long.
	CONTAINERS_LIST=`/usr/bin/lxc-autostart $STOPOPTS --list | tr '\n' ' '`
	run_cmd "$(nls "Stopping running LXC containers (%s) " "$CONTAINERS_LIST")" /usr/bin/lxc-autostart $STOPOPTS $SHUTDOWNDELAY
	rm -f "$localstatedir"/lock/subsys/lxc
	;;
  restart|reload|force-reload)
	$0 stop
	$0 start
	;;
  status)
	lxc-ls --fancy  --fancy-format name,state,pid,ipv4,ipv6,memory,ram,swap    # NOTE: python3-lxc is needed for lxc-ls
	;;
  *)
	echo $"Usage: $0 {start|stop|restart|reload|force-reload}"
	exit 2
esac
exit $?