2020-07-10 08:58:00 +09:00
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<?php
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// {{{ License
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social 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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// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
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// }}}
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2020-07-10 22:13:53 +09:00
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namespace App\Core;
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2020-07-10 08:58:00 +09:00
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use Functional as F;
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use Symfony\Component\Cache\Adapter\AbstractAdapter;
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use Symfony\Component\Cache\Adapter\ChainAdapter;
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abstract class Cache
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{
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protected static AbstractAdapter $pool;
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2020-07-10 22:13:53 +09:00
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private static string $ENV_VAR = 'SOCIAL_CACHE_ADAPTER';
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2020-07-10 08:58:00 +09:00
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/**
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* Configure a cache pool, with adapters taken from `ENV_VAR`.
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* We may want multiple of these in the future, but for now it seems
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* unnecessary
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*/
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public static function setPool()
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{
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2020-07-10 22:13:53 +09:00
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if (!isset($_ENV[self::$ENV_VAR])) {
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2020-07-10 08:58:00 +09:00
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return;
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}
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2020-07-10 22:13:53 +09:00
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$adapters = F\map(explode(':', strtolower($_ENV[self::$ENV_VAR])),
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2020-07-10 08:58:00 +09:00
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function (string $a) {
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return 'Adapter\\' . ucfirst($a) . 'Adapter';
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});
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if (count($adapters) === 1) {
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self::$pool = new $adapters[0];
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} else {
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self::$pool = new ChainAdapter($adapters);
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}
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}
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2020-07-10 22:13:53 +09:00
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public static function get(string $key, callable $calculate, float $beta = 1.0)
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{
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return self::$pool->get($key, $calculate, $beta);
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}
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2020-07-11 01:41:26 +09:00
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public static function delete(string $key): bool
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2020-07-10 08:58:00 +09:00
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{
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2020-07-10 22:13:53 +09:00
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return self::$pool->delete($key);
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}
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2020-07-11 01:41:26 +09:00
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public static function getList(string $key, callable $calculate, int $max_count = 64, float $beta = 1.0): SplFixedArray
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{
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$keys = self::getKeyList($key, $max_count, $beta);
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$list = new SplFixedArray($keys->count());
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foreach ($keys as $k) {
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$list[] = self::get($k, $calculate, $beta);
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}
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return $list;
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}
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public static function deleteList(string $key, int $count = 0)
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{
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$keys = self::getKeyList($key, $max_count, $beta);
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if (!F\every($keys, function ($k) { return self::delete($k); })) {
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Log::warning("Some element of the list associated with {$key} was not deleted. There may be some memory leakage in the cache process");
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}
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return self::delete($key);
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}
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private static function getKeyList(string $key, int $max_count, float $beta): array
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2020-07-10 22:13:53 +09:00
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{
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// Get the current keys associated with a list. If the cache
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// is not primed, the function is called and returns an empty
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2020-07-11 01:41:26 +09:00
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// ring buffer
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return self::get($key,
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function (ItemInterface $i) use ($max_count) {
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return new RingBuffer($max_count);
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}, $beta);
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2020-07-10 08:58:00 +09:00
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}
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}
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