Revert "Refactor datastores to classes (#9179)" (#11273)

This reverts commit e5dad7a64e.

LibreNMS/Interfaces/Data/Datastore.php

@@ -1,74 +0,0 @@
-<?php
-/**
- * Datastore.php
- *
- * Interface for datastores. Will be used to send them data through the put() method
- *
- * 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/>.
- *
- * @package    LibreNMS
- * @link       http://librenms.org
- * @copyright  2018 Tony Murray
- * @author     Tony Murray <murraytony@gmail.com>
- */
-
-namespace LibreNMS\Interfaces\Data;
-
-interface Datastore
-{
-    /**
-     * Check if this is enabled by the configuration
-     *
-     * @return boolean
-     */
-    public static function isEnabled();
-
-    /**
-     * Checks if the datastore wants rrdtags to be sent when issuing put()
-     *
-     * @return boolean
-     */
-    public function wantsRrdTags();
-
-    /**
-     * The name of this datastore
-     *
-     * @return string
-     */
-    public function getName();
-
-    /**
-     * Array of stats should be [type => [count => n, time => s]]
-     *
-     * @return array
-     */
-    public function getStats();
-
-    /**
-     * Datastore-independent function which should be used for all polled metrics.
-     *
-     * RRD Tags:
-     *   rrd_def     RrdDefinition
-     *   rrd_name    array|string: the rrd filename, will be processed with rrd_name()
-     *   rrd_oldname array|string: old rrd filename to rename, will be processed with rrd_name()
-     *   rrd_step             int: rrd step, defaults to 300
-     *
-     * @param array $device
-     * @param string $measurement Name of this measurement
-     * @param array $tags tags for the data (or to control rrdtool)
-     * @param array|mixed $fields The data to update in an associative array, the order must be consistent with rrd_def,
-     *                            single values are allowed and will be paired with $measurement
-     */
-    public function put($device, $measurement, $tags, $fields);
-}