#!/bin/sh

. ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs

ME=NONEXISTENT
OTHER=NONEXISTENT
[ -f "${OCF_RESKEY_config}" ] && . "${OCF_RESKEY_config}"

do_metadata()
{
	cat << EOF
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="Hetzner-failover-ip" version="0.9">
<version>1.0</version>

<longdesc lang="en">
Updates DNS record relay for a failover address.
</longdesc>
<shortdesc lang="en">DNS updater</shortdesc>

<parameters>

<parameter name="config" unique="1" required="1">
<longdesc lang="en">
Configuration file, specifying addresses of the systems and hostname.
</longdesc>
<shortdesc lang="en">Configuration file.</shortdesc>
<content type="string" default="" />
</parameter>

<parameter name="hostname" unique="1" required="1">
<longdesc lang="en">
Hostname associated with the DNS record.
</longdesc>
<shortdesc lang="en">Hostname.</shortdesc>
<content type="string" default="" />
</parameter>

</parameters>

<actions>
<action name="start" timeout="300" />
<action name="stop" timeout="10" />
<action name="monitor" timeout="30" interval="60" depth="0" start-delay="0" />
<action name="reload" timeout="600" />
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="30" />
</actions>
</resource-agent>
EOF
}

do_usage()
{
	echo "usage: $0 {start|stop|monitor|reload|meta-data|validate-all}"
}

do_monitor()
{
	if grep -q "$ME.*$OCF_RESKEY_hostname" /etc/hosts
	then
		return $OCF_SUCCESS
	fi
	return $OCF_NOT_RUNNING
}

do_start()
{
	grep -v "$OCF_RESKEY_hostname" /etc/hosts > /etc/hosts.new
	echo "$ME $OCF_RESKEY_hostname" >> /etc/hosts.new
	mv /etc/hosts.new /etc/hosts
	return $OCF_SUCCESS
}

do_stop()
{
	grep -v "$OCF_RESKEY_hostname" /etc/hosts > /etc/hosts.new
	echo "$OTHER $OCF_RESKEY_hostname" >> /etc/hosts.new
	mv /etc/hosts.new /etc/hosts
	return $OCF_SUCCESS
}

case $__OCF_ACTION in
meta-data)	do_metadata
		exit $OCF_SUCCESS
		;;
monitor)	do_monitor
		;;
start)		do_start
		;;
stop)		do_stop
		;;
*)		do_usage
		exit $OCF_ERR_UNIMPLEMENTED
		;;
esac

rc=$?
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
exit $rc