hook_cron.php

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<?php

/*
 * Copyright (c) 2012 The University of Queensland
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * Written by David Gwynne <dlg@uq.edu.au> as part of the IT
 * Infrastructure Group in the Faculty of Engineering, Architecture
 * and Information Technology.
 */


function riak_hook_cron(&$croninfo) {
        assert(is_array($croninfo));
        assert(array_key_exists('summary', $croninfo));
        assert(array_key_exists('tag', $croninfo));

        if ($croninfo['tag'] !== 'hourly') return;

        try {
                $store = new sspmod_riak_Store_Store();
                $result = $store->bucket->indexSearch('expires', 'int',
                    1, time() - 30);
                foreach ($result as $link) {
                        $link->getBinary()->delete();
                }

                SimpleSAML\Logger::info(sprintf("deleted %s riak key%s",
                    sizeof($result), sizeof($result) == 1 ? '' : 's'));
        } catch (Exception $e) {
                $message = 'riak threw exception: ' . $e->getMessage();
                SimpleSAML\Logger::warning($message);
                $croninfo['summary'][] = $message;
        }
}