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Diffstat (limited to 'plugins/CacheLog/CacheLogPlugin.php')
| -rw-r--r-- | plugins/CacheLog/CacheLogPlugin.php | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/plugins/CacheLog/CacheLogPlugin.php b/plugins/CacheLog/CacheLogPlugin.php new file mode 100644 index 000000000..4c47de80e --- /dev/null +++ b/plugins/CacheLog/CacheLogPlugin.php @@ -0,0 +1,121 @@ +<?php +/** + * StatusNet - the distributed open-source microblogging tool + * Copyright (C) 2009, StatusNet, Inc. + * + * Logs cache access + * + * PHP version 5 + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero 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 Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * @category Cache + * @package StatusNet + * @author Evan Prodromou <evan@status.net> + * @copyright 2009 StatusNet, Inc. + * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0 + * @link http://status.net/ + */ + +if (!defined('STATUSNET')) { + // This check helps protect against security problems; + // your code file can't be executed directly from the web. + exit(1); +} + +/** + * Log cache access + * + * Note that since most caching plugins return false for StartCache* + * methods, you should add this plugin before them, i.e. + * + * addPlugin('CacheLog'); + * addPlugin('XCache'); + * + * @category Cache + * @package StatusNet + * @author Evan Prodromou <evan@status.net> + * @copyright 2009 StatusNet, Inc. + * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0 + * @link http://status.net/ + */ + +class CacheLogPlugin extends Plugin +{ + function onStartCacheGet(&$key, &$value) + { + $this->log(LOG_INFO, "Fetching key '$key'"); + return true; + } + + function onEndCacheGet($key, &$value) + { + if ($value === false) { + $this->log(LOG_INFO, "Cache MISS for key '$key'"); + } else { + $this->log(LOG_INFO, "Cache HIT for key '$key'"); + } + return true; + } + + function onStartCacheSet(&$key, &$value, &$flag, &$expiry, &$success) + { + if (empty($value)) { + if (is_array($value)) { + $this->log(LOG_INFO, "Setting empty array for key '$key'"); + } else if (is_null($value)) { + $this->log(LOG_INFO, "Setting null value for key '$key'"); + } else if (is_string($value)) { + $this->log(LOG_INFO, "Setting empty string for key '$key'"); + } else if (is_integer($value)) { + $this->log(LOG_INFO, "Setting integer 0 for key '$key'"); + } else { + $this->log(LOG_INFO, "Setting empty value '$value' for key '$key'"); + } + } else { + $this->log(LOG_INFO, "Setting non-empty value for key '$key'"); + } + return true; + } + + function onEndCacheSet($key, $value, $flag, $expiry) + { + $this->log(LOG_INFO, "Done setting cache value for key '$key'"); + return true; + } + + function onStartCacheDelete(&$key, &$success) + { + $this->log(LOG_INFO, "Deleting cache value for key '$key'"); + return true; + } + + function onEndCacheDelete($key) + { + $this->log(LOG_INFO, "Done deleting cache value for key '$key'"); + return true; + } + + function onPluginVersion(&$versions) + { + $versions[] = array('name' => 'CacheLog', + 'version' => STATUSNET_VERSION, + 'author' => 'Evan Prodromou', + 'homepage' => 'http://status.net/wiki/Plugin:CacheLog', + 'description' => + _m('Log reads and writes to the cache')); + return true; + } +} + |