diff options
Diffstat (limited to 'engine/lib/cache.php')
| -rw-r--r-- | engine/lib/cache.php | 174 |
1 files changed, 136 insertions, 38 deletions
diff --git a/engine/lib/cache.php b/engine/lib/cache.php index a6ebe2a30..c117b9ec9 100644 --- a/engine/lib/cache.php +++ b/engine/lib/cache.php @@ -10,15 +10,14 @@ /* Filepath Cache */ /** - * Returns an ElggCache object suitable for caching view - * file load paths to disk under $CONFIG->dataroot. + * Returns an ElggCache object suitable for caching system information * * @todo Can this be done in a cleaner way? * @todo Swap to memcache etc? * - * @return ElggFileCache A cache object suitable for caching file load paths. + * @return ElggFileCache */ -function elgg_get_filepath_cache() { +function elgg_get_system_cache() { global $CONFIG; /** @@ -27,35 +26,34 @@ function elgg_get_filepath_cache() { static $FILE_PATH_CACHE; if (!$FILE_PATH_CACHE) { - $FILE_PATH_CACHE = new ElggFileCache($CONFIG->dataroot); + $FILE_PATH_CACHE = new ElggFileCache($CONFIG->dataroot . 'system_cache/'); } return $FILE_PATH_CACHE; } /** - * Function which resets the file path cache. + * Reset the system cache by deleting the caches * + * @return void */ -function elgg_filepath_cache_reset() { - $cache = elgg_get_filepath_cache(); - $view_types_result = $cache->delete('view_types'); - $views_result = $cache->delete('views'); - return $view_types_result && $views_result; +function elgg_reset_system_cache() { + $cache = elgg_get_system_cache(); + $cache->clear(); } /** - * Saves a filepath cache. + * Saves a system cache. * - * @param string $type - * @param string $data + * @param string $type The type or identifier of the cache + * @param string $data The data to be saved * @return bool */ -function elgg_filepath_cache_save($type, $data) { +function elgg_save_system_cache($type, $data) { global $CONFIG; - if ($CONFIG->viewpath_cache_enabled) { - $cache = elgg_get_filepath_cache(); + if ($CONFIG->system_cache_enabled) { + $cache = elgg_get_system_cache(); return $cache->save($type, $data); } @@ -63,16 +61,16 @@ function elgg_filepath_cache_save($type, $data) { } /** - * Retrieve the contents of the filepath cache. + * Retrieve the contents of a system cache. * * @param string $type The type of cache to load * @return string */ -function elgg_filepath_cache_load($type) { +function elgg_load_system_cache($type) { global $CONFIG; - if ($CONFIG->viewpath_cache_enabled) { - $cache = elgg_get_filepath_cache(); + if ($CONFIG->system_cache_enabled) { + $cache = elgg_get_system_cache(); $cached_data = $cache->load($type); if ($cached_data) { @@ -84,35 +82,74 @@ function elgg_filepath_cache_load($type) { } /** - * Enables the views file paths disk cache. + * Enables the system disk cache. * - * Uses the 'viewpath_cache_enabled' datalist with a boolean value. - * Resets the views paths cache. + * Uses the 'system_cache_enabled' datalist with a boolean value. + * Resets the system cache. * * @return void */ -function elgg_enable_filepath_cache() { +function elgg_enable_system_cache() { global $CONFIG; - datalist_set('viewpath_cache_enabled', 1); - $CONFIG->viewpath_cache_enabled = 1; - elgg_filepath_cache_reset(); + datalist_set('system_cache_enabled', 1); + $CONFIG->system_cache_enabled = 1; + elgg_reset_system_cache(); } /** - * Disables the views file paths disk cache. + * Disables the system disk cache. * - * Uses the 'viewpath_cache_enabled' datalist with a boolean value. - * Resets the views paths cache. + * Uses the 'system_cache_enabled' datalist with a boolean value. + * Resets the system cache. * * @return void */ -function elgg_disable_filepath_cache() { +function elgg_disable_system_cache() { global $CONFIG; - datalist_set('viewpath_cache_enabled', 0); - $CONFIG->viewpath_cache_enabled = 0; - elgg_filepath_cache_reset(); + datalist_set('system_cache_enabled', 0); + $CONFIG->system_cache_enabled = 0; + elgg_reset_system_cache(); +} + +/** @todo deprecate in Elgg 1.9 **/ + +/** + * @access private + */ +function elgg_get_filepath_cache() { + return elgg_get_system_cache(); +} +/** + * @access private + */ +function elgg_filepath_cache_reset() { + return elgg_reset_system_cache(); +} +/** + * @access private + */ +function elgg_filepath_cache_save($type, $data) { + return elgg_save_system_cache($type, $data); +} +/** + * @access private + */ +function elgg_filepath_cache_load($type) { + return elgg_load_system_cache($type); +} +/** + * @access private + */ +function elgg_enable_filepath_cache() { + return elgg_enable_system_cache(); +} +/** + * @access private + */ +function elgg_disable_filepath_cache() { + return elgg_disable_system_cache(); } /* Simplecache */ @@ -332,7 +369,7 @@ function elgg_invalidate_simplecache() { $return = true; while (false !== ($file = readdir($handle))) { if ($file != "." && $file != "..") { - $return = $return && unlink($CONFIG->dataroot . 'views_simplecache/' . $file); + $return &= unlink($CONFIG->dataroot . 'views_simplecache/' . $file); } } closedir($handle); @@ -345,9 +382,70 @@ function elgg_invalidate_simplecache() { } foreach ($viewtypes as $viewtype) { - $return = $return && datalist_set("simplecache_lastupdate_$viewtype", 0); - $return = $return && datalist_set("simplecache_lastcached_$viewtype", 0); + $return &= datalist_set("simplecache_lastupdate_$viewtype", 0); + $return &= datalist_set("simplecache_lastcached_$viewtype", 0); } return $return; } + +/** + * @see elgg_reset_system_cache() + * @access private + */ +function _elgg_load_cache() { + global $CONFIG; + + $CONFIG->system_cache_loaded = false; + + $CONFIG->views = new stdClass(); + $data = elgg_load_system_cache('view_locations'); + if (!is_string($data)) { + return; + } + $CONFIG->views->locations = unserialize($data); + + $data = elgg_load_system_cache('view_types'); + if (!is_string($data)) { + return; + } + $CONFIG->view_types = unserialize($data); + + $CONFIG->system_cache_loaded = true; +} + +/** + * @access private + */ +function _elgg_cache_init() { + global $CONFIG; + + $viewtype = elgg_get_viewtype(); + + // Regenerate the simple cache if expired. + // Don't do it on upgrade because upgrade does it itself. + // @todo - move into function and perhaps run off init system event + if (!defined('UPGRADING')) { + $lastupdate = datalist_get("simplecache_lastupdate_$viewtype"); + $lastcached = datalist_get("simplecache_lastcached_$viewtype"); + if ($lastupdate == 0 || $lastcached < $lastupdate) { + elgg_regenerate_simplecache($viewtype); + $lastcached = datalist_get("simplecache_lastcached_$viewtype"); + } + $CONFIG->lastcache = $lastcached; + } + + // cache system data if enabled and not loaded + if ($CONFIG->system_cache_enabled && !$CONFIG->system_cache_loaded) { + elgg_save_system_cache('view_locations', serialize($CONFIG->views->locations)); + elgg_save_system_cache('view_types', serialize($CONFIG->view_types)); + } + + if ($CONFIG->system_cache_enabled && !$CONFIG->i18n_loaded_from_cache) { + foreach ($CONFIG->translations as $lang => $map) { + elgg_save_system_cache("$lang.php", serialize($map)); + } + } +} + +elgg_register_event_handler('ready', 'system', '_elgg_cache_init'); |