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#!/bin/bash
#
# Copyright (c) 2014 Anand Subramanian anands@redhat.com
# Copyright (c) 2015 Red Hat Inc.
#                    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

if [ -n "$OCF_DEBUG_LIBRARY" ]; then
    . $OCF_DEBUG_LIBRARY
else
    : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
fi

ganesha_meta_data() {
        cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="ganesha_mon">
<version>1.0</version>

<longdesc lang="en">
This Linux-specific resource agent acts as a dummy
resource agent for nfs-ganesha.
</longdesc>

<shortdesc lang="en">Manages the user-space nfs-ganesha NFS server</shortdesc>

<parameters>
</parameters>

<actions>
<action name="start"   timeout="40s" />
<action name="stop"    timeout="40s" />
<action name="status" depth="0"  timeout="20s" interval="10s" />
<action name="monitor" depth="0"  timeout="10s" interval="10s" />
<action name="meta-data"  timeout="20s" />
</actions>
</resource-agent>
END

return $OCF_SUCCESS
}

ganesha_mon_usage() {
	echo "ganesha.nfsd USAGE"
}

# Make sure meta-data and usage always succeed
case $__OCF_ACTION in
	meta-data)	ganesha_meta_data
			exit $OCF_SUCCESS
			;;
	usage|help)	ganesha_usage
			exit $OCF_SUCCESS
			;;
	*)
			;;
esac

ganesha_mon_start()
{
	return $OCF_SUCCESS
}

ganesha_mon_stop()
{
	return $OCF_SUCCESS
}

ganesha_mon_monitor()
{
	local short_host=$(hostname -s)

	if [ -e /var/run/ganesha.nfsd.pid -a \
	     -d /proc/$(cat /var/run/ganesha.nfsd.pid) ]; then
		# logger "note: ganesha_mon_monitor() pcs resource delete ${short_host}-dead_ip-1"
		pcs resource delete ${short_host}-dead_ip-1
		# if [ $? -ne 0 ]; then
		# 	logger "warning: pcs resource delete ${short_host}-dead_ip-1"
		# fi

		sleep 1

		attrd_updater -n ganesha-active -v 1
		if [ $? -ne 0 ]; then
			logger "warning: attrd_updater -n ganesha-active -v 1 failed"
		fi

	else
		# logger "note: ganesha_mon_montor(), pcs resource create ${short_host}-dead_ip-1 ocf:heartbeat:Dummy"
		pcs resource create ${short_host}-dead_ip-1 ocf:heartbeat:Dummy
		if [ $? -ne 0 ]; then
			logger "warning: pcs resource create ${short_host}-dead_ip-1 ocf:heartbeat:Dummy failed"
		fi

		sleep 1

		attrd_updater -D -n ganesha-active
		if [ $? -ne 0 ]; then
			logger "warning: attrd_updater -D -n ganesha-active failed"
		fi
	fi

	return $OCF_SUCCESS
}

ganesha_mon_validate()
{
	return $OCF_SUCCESS
}

ganesha_mon_validate

# logger "ganesha_mon ${OCF_RESOURCE_INSTANCE} $__OCF_ACTION"

# Translate each action into the appropriate function call
case $__OCF_ACTION in
start)          ganesha_mon_start
		;;
stop)           ganesha_mon_stop
		;;
status|monitor) ganesha_mon_monitor
		;;
*)              ganesha_mon_usage
                exit $OCF_ERR_UNIMPLEMENTED
                ;;
esac

rc=$?

# The resource agent may optionally log a debug message
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION returned $rc"
exit $rc