*/
namespace Friendica\Core;
-use Friendica\Core\Config;
-use Friendica\Core\PConfig;
-use Friendica\Database\DBM;
+use Friendica\Core\Cache\CacheDriverFactory;
/**
* @brief Class for storing data for a short time
*/
-class Cache
+class Cache extends \Friendica\BaseObject
{
+ const MONTH = 2592000;
+ const WEEK = 604800;
+ const DAY = 86400;
+ const HOUR = 3600;
+ const HALF_HOUR = 1800;
+ const QUARTER_HOUR = 900;
+ const FIVE_MINUTES = 300;
+ const MINUTE = 60;
+
/**
- * @brief Check for memcache and open a connection if configured
- *
- * @return object|boolean The memcache object - or "false" if not successful
+ * @var Cache\ICacheDriver
*/
- public static function memcache()
- {
- if (!function_exists('memcache_connect')) {
- return false;
- }
-
- if (!Config::get('system', 'memcache')) {
- return false;
- }
+ private static $driver = null;
- $memcache_host = Config::get('system', 'memcache_host', '127.0.0.1');
- $memcache_port = Config::get('system', 'memcache_port', 11211);
-
- $memcache = new Memcache;
-
- if (!$memcache->connect($memcache_host, $memcache_port)) {
- return false;
- }
+ public static function init()
+ {
+ $driver_name = Config::get('system', 'cache_driver', 'database');
- return $memcache;
+ self::$driver = CacheDriverFactory::create($driver_name);
}
/**
- * @brief Return the duration for a given cache level
- *
- * @param integer $level Cache level
+ * Returns the current cache driver
*
- * @return integer The cache duration in seconds
+ * @return Cache\ICacheDriver
*/
- private static function duration($level)
+ private static function getDriver()
{
- switch ($level) {
- case CACHE_MONTH:
- $seconds = 2592000;
- break;
- case CACHE_WEEK:
- $seconds = 604800;
- break;
- case CACHE_DAY:
- $seconds = 86400;
- break;
- case CACHE_HOUR:
- $seconds = 3600;
- break;
- case CACHE_HALF_HOUR:
- $seconds = 1800;
- break;
- case CACHE_QUARTER_HOUR:
- $seconds = 900;
- break;
- case CACHE_FIVE_MINUTES:
- $seconds = 300;
- break;
- case CACHE_MINUTE:
- $seconds = 60;
- break;
+ if (self::$driver === null) {
+ self::init();
}
- return $seconds;
+
+ return self::$driver;
}
/**
*/
public static function get($key)
{
- $memcache = self::memcache();
- if (is_object($memcache)) {
- // We fetch with the hostname as key to avoid problems with other applications
- $cached = $memcache->get(get_app()->get_hostname().":".$key);
- $value = @unserialize($cached);
-
- // Only return a value if the serialized value is valid.
- // We also check if the db entry is a serialized
- // boolean 'false' value (which we want to return).
- if ($cached === serialize(false) || $value !== false) {
- return $value;
- }
-
- return null;
- }
-
- // Frequently clear cache
- self::clear($duration);
-
- $r = q(
- "SELECT `v` FROM `cache` WHERE `k`='%s' LIMIT 1",
- dbesc($key)
- );
+ $time = microtime(true);
- if (DBM::is_result($r)) {
- $cached = $r[0]['v'];
- $value = @unserialize($cached);
+ $return = self::getDriver()->get($key);
- // Only return a value if the serialized value is valid.
- // We also check if the db entry is a serialized
- // boolean 'false' value (which we want to return).
- if ($cached === serialize(false) || $value !== false) {
- return $value;
- }
- }
+ self::getApp()->save_timestamp($time, 'cache');
- return null;
+ return $return;
}
/**
* @param mixed $value The value that is about to be stored
* @param integer $duration The cache lifespan
*
- * @return void
+ * @return bool
*/
- public static function set($key, $value, $duration = CACHE_MONTH)
+ public static function set($key, $value, $duration = self::MONTH)
{
- // Do we have an installed memcache? Use it instead.
- $memcache = self::memcache();
- if (is_object($memcache)) {
- // We store with the hostname as key to avoid problems with other applications
- $memcache->set(get_app()->get_hostname().":".$key, serialize($value), MEMCACHE_COMPRESSED, self::duration($duration));
- return;
- }
+ $time = microtime(true);
- /// @todo store the cache data in the same way like the config data
- q(
- "REPLACE INTO `cache` (`k`,`v`,`expire_mode`,`updated`) VALUES ('%s','%s',%d,'%s')",
- dbesc($key),
- dbesc(serialize($value)),
- intval($duration),
- dbesc(datetime_convert())
- );
+ $return = self::getDriver()->set($key, $value, $duration);
+
+ self::getApp()->save_timestamp($time, 'cache_write');
+
+ return $return;
}
/**
- * @brief Remove outdated data from the cache
+ * @brief Delete a value from the cache
*
- * @param integer $max_level The maximum cache level that is to be cleared
+ * @param string $key The key to the cached data
*
- * @return void
+ * @return bool
*/
- public static function clear($max_level = CACHE_MONTH)
+ public static function delete($key)
{
- // Clear long lasting cache entries only once a day
- if (Config::get("system", "cache_cleared_day") < time() - self::duration(CACHE_DAY)) {
- if ($max_level == CACHE_MONTH) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 30 days")),
- intval(CACHE_MONTH)
- );
- }
-
- if ($max_level <= CACHE_WEEK) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 7 days")),
- intval(CACHE_WEEK)
- );
- }
-
- if ($max_level <= CACHE_DAY) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 1 days")),
- intval(CACHE_DAY)
- );
- }
- Config::set("system", "cache_cleared_day", time());
- }
-
- if (($max_level <= CACHE_HOUR) && (Config::get("system", "cache_cleared_hour")) < time() - self::duration(CACHE_HOUR)) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 1 hours")),
- intval(CACHE_HOUR)
- );
-
- Config::set("system", "cache_cleared_hour", time());
- }
-
- if (($max_level <= CACHE_HALF_HOUR) && (Config::get("system", "cache_cleared_half_hour")) < time() - self::duration(CACHE_HALF_HOUR)) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 30 minutes")),
- intval(CACHE_HALF_HOUR)
- );
-
- Config::set("system", "cache_cleared_half_hour", time());
- }
-
- if (($max_level <= CACHE_QUARTER_HOUR) && (Config::get("system", "cache_cleared_quarter_hour")) < time() - self::duration(CACHE_QUARTER_HOUR)) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 15 minutes")),
- intval(CACHE_QUARTER_HOUR)
- );
-
- Config::set("system", "cache_cleared_quarter_hour", time());
- }
+ $time = microtime(true);
- if (($max_level <= CACHE_FIVE_MINUTES) && (Config::get("system", "cache_cleared_five_minute")) < time() - self::duration(CACHE_FIVE_MINUTES)) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 5 minutes")),
- intval(CACHE_FIVE_MINUTES)
- );
+ $return = self::getDriver()->delete($key);
- Config::set("system", "cache_cleared_five_minute", time());
- }
+ self::getApp()->save_timestamp($time, 'cache_write');
- if (($max_level <= CACHE_MINUTE) && (Config::get("system", "cache_cleared_minute")) < time() - self::duration(CACHE_MINUTE)) {
- q(
- "DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
- dbesc(datetime_convert('UTC', 'UTC', "now - 1 minutes")),
- intval(CACHE_MINUTE)
- );
+ return $return;
+ }
- Config::set("system", "cache_cleared_minute", time());
- }
+ /**
+ * @brief Remove outdated data from the cache
+ *
+ * @param integer $max_level The maximum cache level that is to be cleared
+ *
+ * @return void
+ */
+ public static function clear()
+ {
+ return self::getDriver()->clear();
}
}
projects / friendica.git / blobdiff