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#!@BASH_SHELL@
#
#
# LXD Registration Service OCF Resource Agent
# It records (in the CIB) various attributes of a node
#
# Copyright (c) 2017 Mathieu Grzybek
# All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
#######################################################################
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
# Parameter defaults
OCF_RESKEY_pidfile_default="$HA_RSCTMP/LXDInfo-${OCF_RESOURCE_INSTANCE}"
OCF_RESKEY_delay_default="0s"
OCF_RESKEY_clone_default="0"
: ${OCF_RESKEY_pidfile=${OCF_RESKEY_pidfile_default}}
: ${OCF_RESKEY_delay=${OCF_RESKEY_delay_default}}
: ${OCF_RESKEY_clone=${OCF_RESKEY_clone_default}}
#######################################################################
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="lxd-info" version="1.0">
<version>1.0</version>
<longdesc lang="en">
This is a LXD Registration Service Resource Agent.
It records (in the CIB) attributes about the number of running LXD containers
running on the node.
Sample output:
lxd_containers: 5
</longdesc>
<shortdesc lang="en">Records various node attributes in the CIB</shortdesc>
<parameters>
<parameter name="pidfile" unique="0">
<longdesc lang="en">PID file</longdesc>
<shortdesc lang="en">PID file</shortdesc>
<content type="string" default="${OCF_RESKEY_pidfile_default}" />
</parameter>
<parameter name="delay" unique="0">
<longdesc lang="en">Interval to allow values to stabilize</longdesc>
<shortdesc lang="en">Dampening Delay</shortdesc>
<content type="string" default="${OCF_RESKEY_delay_default}" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="20s" />
<action name="stop" timeout="20s" />
<action name="monitor" timeout="20s" interval="60s"/>
<action name="meta-data" timeout="5s" />
<action name="validate-all" timeout="20s" />
</actions>
</resource-agent>
END
}
#######################################################################
LXDInfoStats() {
value=$(lxc list|grep -ci RUNNING)
echo -e "lxd_containers:\t$value"
${HA_SBIN_DIR}/attrd_updater ${OCF_RESKEY_delay} -S status -n lxd_containers -v $value
}
LXDInfo_usage() {
cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}
Expects to have a fully populated OCF RA-compliant environment set.
END
}
LXDInfo_start() {
echo $OCF_RESKEY_clone > $OCF_RESKEY_pidfile
LXDInfoStats
exit $OCF_SUCCESS
}
LXDInfo_stop() {
rm -f $OCF_RESKEY_pidfile
${HA_SBIN_DIR}/attrd_updater ${OCF_RESKEY_delay} -D -S state -n lxd_containers
exit $OCF_SUCCESS
}
LXDInfo_monitor() {
if [ -f "$OCF_RESKEY_pidfile" ] ; then
LXDInfoStats
exit $OCF_RUNNING
fi
exit $OCF_NOT_RUNNING
}
LXDInfo_validate() {
return $OCF_SUCCESS
}
if [ $# -ne 1 ]; then
LXDInfo_usage
exit $OCF_ERR_ARGS
fi
if [ x != x${OCF_RESKEY_delay} ]; then
OCF_RESKEY_delay="-d ${OCF_RESKEY_delay}"
fi
case $__OCF_ACTION in
meta-data) meta_data
exit $OCF_SUCCESS
;;
start) LXDInfo_start
;;
stop) LXDInfo_stop
;;
monitor) LXDInfo_monitor
;;
validate-all) LXDInfo_validate
;;
usage|help) LXDInfo_usage
exit $OCF_SUCCESS
;;
*) LXDInfo_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
exit $?

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