BaseDataCache

17final class BaseDataCache implements DataCache18{19    /**20     * @var Base21     */22    private $cache;23 24    public function __construct(Base $cache)25    {26        $this->cache = $cache;27    }28 29    /**30     * Fetches a value from the cache.31     *32     * Equivalent to \Psr\SimpleCache\CacheInterface::get()33     * <code>34     * public function get(string $key, mixed $default = null): mixed;35     * </code>36     *37     * @param string $key     The unique key of this item in the cache.38     * @param mixed  $default Default value to return if the key does not exist.39     *40     * @return array|mixed The value of the item from the cache, or $default in case of cache miss.41     *42     * @throws InvalidArgumentException43     *   MUST be thrown if the $key string is not a legal value.44     */45    public function get_data(string $key, $default = null)46    {47        $data = $this->cache->load();48 49        if (!is_array($data)) {50            return $default;51        }52 53        // ignore data if internal cache expiration time is not set54        if (!array_key_exists('__cache_expiration_time', $data)) {55            return $default;56        }57 58        // ignore data if internal cache expiration time is expired59        if ($data['__cache_expiration_time'] < time()) {60            return $default;61        }62 63        // remove internal cache expiration time64        unset($data['__cache_expiration_time']);65 66        return $data;67    }68 69    /**70     * Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.71     *72     * Equivalent to \Psr\SimpleCache\CacheInterface::set()73     * <code>74     * public function set(string $key, mixed $value, null|int|\DateInterval $ttl = null): bool;75     * </code>76     *77     * @param string   $key   The key of the item to store.78     * @param array<mixed> $value The value of the item to store, must be serializable.79     * @param null|int $ttl   Optional. The TTL value of this item. If no value is sent and80     *                                      the driver supports TTL then the library may set a default value81     *                                      for it or let the driver take care of that.82     *83     * @return bool True on success and false on failure.84     *85     * @throws InvalidArgumentException86     *   MUST be thrown if the $key string is not a legal value.87     */88    public function set_data(string $key, array $value, ?int $ttl = null): bool89    {90        if ($ttl === null) {91            $ttl = 3600;92        }93 94        // place internal cache expiration time95        $value['__cache_expiration_time'] = time() + $ttl;96