130 lines
4.1 KiB
PHP
130 lines
4.1 KiB
PHP
<?php
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/**
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2009, StatusNet, Inc.
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*
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* Logs cache access
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*
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* PHP version 5
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Cache
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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// This check helps protect against security problems;
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// your code file can't be executed directly from the web.
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exit(1);
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}
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/**
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* Log cache access
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*
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* Note that since most caching plugins return false for StartCache*
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* methods, you should add this plugin before them, i.e.
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*
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* addPlugin('CacheLog');
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* addPlugin('XCache');
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*
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* @category Cache
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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class CacheLogPlugin extends Plugin
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{
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const PLUGIN_VERSION = '2.0.0';
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function onStartCacheGet(&$key, &$value)
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{
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$this->log(LOG_INFO, "Fetching key '$key'");
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return true;
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}
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function onEndCacheGet($key, &$value)
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{
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if ($value === false) {
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$this->log(LOG_INFO, sprintf('Cache MISS for key "%s"', $key));
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} else {
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$this->log(LOG_INFO, sprintf('Cache HIT for key "%s": %s', $key, self::showValue($value)));
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}
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return true;
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}
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function onStartCacheSet(&$key, &$value, &$flag, &$expiry, &$success)
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{
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$this->log(LOG_INFO, "Begin setting cache value for key '$key'");
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return true;
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}
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function onEndCacheSet($key, $value, $flag, $expiry)
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{
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$this->log(LOG_INFO, sprintf('Set cache value %s for key "%s" (flags: %d, expiry %d)',
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self::showValue($value),
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$key,
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$flag,
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$expiry));
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return true;
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}
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function onStartCacheDelete(&$key, &$success)
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{
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$this->log(LOG_INFO, "Deleting cache value for key '$key'");
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return true;
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}
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function onEndCacheDelete($key)
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{
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$this->log(LOG_INFO, "Done deleting cache value for key '$key'");
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return true;
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}
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public function onPluginVersion(array &$versions): bool
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{
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$versions[] = array('name' => 'CacheLog',
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'version' => self::PLUGIN_VERSION,
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'author' => 'Evan Prodromou',
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'homepage' => 'https://git.gnu.io/gnu/gnu-social/tree/master/plugins/CacheLog',
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'description' =>
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// TRANS: Plugin description.
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_m('Log reads and writes to the cache.'));
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return true;
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}
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static function showValue($value)
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{
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if (is_object($value)) {
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return sprintf('object of class %s', get_class($value));
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} else if (is_array($value)) {
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return sprintf('array of length %d', count($value));
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} else if (is_string($value)) {
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return sprintf('string "%s"', $value);
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} else if (is_integer($value)) {
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return sprintf('integer %d', $value);
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} else if (is_null($value)) {
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return 'null';
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} else {
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return 'unknown';
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}
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}
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}
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