#!/bin/sh
#
# Script to monitor memory status of the xen host
#
# Written by immerda project (admin(_at_)immerda.ch)
# 2007
# License: GPL
#
# Parameters understood:
#
#     config    (required)
#     autoconf  (optional - used by munin-config)
#

XM='/usr/sbin/xm'

if [ "$1" = "autoconf" ]; then
        if [ -x "$XM" ]; then
                echo yes
        else
                echo "no (xm not found)"
        fi
        exit 0
fi

if [ "$1" = "config" ]; then

        echo 'graph_title Xen Memory'
        echo 'graph_args --base 1000 -l 0'
        echo 'graph_scale no'
        echo 'graph_vlabel MB'
        echo 'graph_category virtualization'
        echo 'graph_info This graph shows of many mS wall time where used by a domain'
        "$XM" info | while read -r name bla value; do
                # total_memory 2047
                # free_memory 1476
                name=$(echo "$name" | sed -e"s/-/_/")

                if [ "$name" = "total_memory" ] || [ "$name" = "free_memory" ]; then
                        echo "$name.label $name"
                        echo "$name.type GAUGE"
                        echo "$name.draw AREASTACK"
                        echo "$name.min 0"
                        if [ "$name" = "total_memory" ]; then
                                echo "$name.info total memory"
                        elif [ "$name" = "free_memory" ]; then
                                echo "$name.info free memory"
                        fi
                fi
        done
        exit 0
fi

# shellcheck disable=SC2034
"$XM" info | while read -r name bla value; do
        name=$(echo "$name" | sed -e"s/-/_/")
        if [ "$name" = "total_memory" ] || [ "$name" = "free_memory" ]; then
                echo "$name.value $value"
        fi
done