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- <?php
- namespace OC\Cache;
- use OCP\ICache;
- class CappedMemoryCache implements ICache, \ArrayAccess {
- private $capacity;
-
- private $cache = [];
- public function __construct($capacity = 512) {
- $this->capacity = $capacity;
- }
- public function hasKey($key): bool {
- return isset($this->cache[$key]);
- }
-
- public function get($key) {
- return $this->cache[$key] ?? null;
- }
-
- public function set($key, $value, $ttl = 0): bool {
- if (is_null($key)) {
- $this->cache[] = $value;
- } else {
- $this->cache[$key] = $value;
- }
- $this->garbageCollect();
- return true;
- }
- public function remove($key) {
- unset($this->cache[$key]);
- return true;
- }
- public function clear($prefix = '') {
- $this->cache = [];
- return true;
- }
- public function offsetExists($offset): bool {
- return $this->hasKey($offset);
- }
-
-
- public function &offsetGet($offset) {
- return $this->cache[$offset];
- }
-
- public function offsetSet($offset, $value): void {
- $this->set($offset, $value);
- }
- public function offsetUnset($offset): void {
- $this->remove($offset);
- }
-
- public function getData() {
- return $this->cache;
- }
- private function garbageCollect() {
- while (count($this->cache) > $this->capacity) {
- reset($this->cache);
- $key = key($this->cache);
- $this->remove($key);
- }
- }
- public static function isAvailable(): bool {
- return true;
- }
- }
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