#!/bin/sh

# Copyright 2015-2019 Rivoreo

# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:

# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
# FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

if [ -z "${PROGRAM_DIR+set}" ]; then
	echo "You should not run this script directly" 1>&2
	exit 255
fi
[ -z "$SAR" ] && SAR=sar
export LC_TIME=C
$SAR -r "$INTERVAL" | sed -ur -e "/^[0-9]{2}:[0-9]{2}:[0-9]{2}/!d" -e "s/[0-9]{2}:[0-9]{2}:[0-9]{2}.{4}//" | while read -r line; do
	set -- $line
	if [ $# != 10 ]; then
		echo "data error: # $# != 10" 1>&2
		continue
	fi
	[ "$1" = kbmemfree ] && continue
	memfree_mib=$(($1/1024))
	memused_mib=$(($2/1024))
	buffers_mib=$(($4/1024))
	cached_mib=$(($5/1024))
	commit_mib=$(($6/1024))
	active_mib=$(($8/1024))
	inactive_mib=$(($9/1024))
	dirty_mib=$((${10}/1024))
	if [ -n "$INFLUXDB_BASE_URL" ]; then
		http_post "${INFLUXDB_BASE_URL}write?db=$INFLUXDB_DB_NAME" \
			"memstat,host=$HOSTNAME memfree_mib=$memfree_mib,memused_mib=$memused_mib,memused_p=$3,buffers_mib=$buffers_mib,cached_mib=$cached_mib,commit_mib=$commit_mib,commit_p=$7,active_mib=$active_mib,inactive_mib=$inactive_mib,dirty_mib=$dirty_mib" 1>&2
	fi
	if [ -n "$CARBON_SERVER" ]; then
		printf '%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n' \
			"memstat.$HOSTNAME_FOR_CARBON.memfree_mib $memfree_mib -1" \
			"memstat.$HOSTNAME_FOR_CARBON.memused_mib $memused_mib -1" \
			"memstat.$HOSTNAME_FOR_CARBON.memused_p $3 -1" \
			"memstat.$HOSTNAME_FOR_CARBON.buffers_mib $buffers_mib -1" \
			"memstat.$HOSTNAME_FOR_CARBON.cached_mib $cached_mib -1" \
			"memstat.$HOSTNAME_FOR_CARBON.commit_mib $commit_mib -1" \
			"memstat.$HOSTNAME_FOR_CARBON.commit_p $7 -1" \
			"memstat.$HOSTNAME_FOR_CARBON.active_mib $active_mib -1" \
			"memstat.$HOSTNAME_FOR_CARBON.inactive_mib $inactive_mib -1" \
			"memstat.$HOSTNAME_FOR_CARBON.dirty_mib $dirty_mib -1"
	fi
done | send_carbon_lines
