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First cut at unified data storage for rrdtool & influxdb

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As a side-effect, this adds InfluxDB support for MIB-based polling.
This commit is contained in:
Paul Gear
2016-01-10 19:31:39 +10:00
parent 61af4f9d7f
commit 3831ad3f45
11 changed files with 154 additions and 184 deletions
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60
includes/datastore.inc.php Normal file
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<?php
/*
* LibreNMS abstract data storage interface to both rrdtool & influxdb
*
* Copyright (c) 2016 Paul D. Gear <paul@librenms.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
require_once $config['install_dir'] . "/includes/rrdtool.inc.php";
require_once $config['install_dir'] . "/includes/influxdb.inc.php";
/*
* @return Copy of $arr with all keys beginning with 'rrd_' removed.
*/
function rrd_array_filter($arr)
{
$result = array();
foreach ($arr as $k => $v) {
if (strpos($k, 'rrd_') === 0) {
continue;
}
$result[$t] = $v;
}
return $result;
} // rrd_array_filter
/*
* Datastore-independent function which should be used for all polled metrics.
*/
function data_update($device, $measurement, $tags, $fields)
{
// convenience conversion to allow calling with a single value, so, e.g., these are equivalent:
// data_update($device, 'mymeasurement', $tags, 1234);
// AND
// data_update($device, 'mymeasurement', $tags, array('mymeasurement' => 1234));
if (!is_array($fields)) {
$fields = array($measurement => $fields);
}
// rrdtool_data_update() will only use the tags it deems relevant, so we pass all of them.
// However, influxdb saves all tags, so we filter out the ones beginning with 'rrd_'.
rrdtool_data_update($device, $measurement, $tags, $fields);
influx_update($device, $measurement, rrd_array_filter($tags), $fields);
} // data_update