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<?php |
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namespace Kodus\Cache; |
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use DateInterval; |
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use Psr\SimpleCache\CacheInterface; |
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use Traversable; |
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/** |
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* WARNING! Don't use in production, only use for automated testing! |
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* |
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* This is a mock PSR-16 simple cache implementation - it's internal state survives only for the |
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* lifetime of the object itself. |
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*/ |
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class MockCache implements CacheInterface |
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{ |
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/** |
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* @var int |
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*/ |
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const DEFAULT_TTL = 86400; |
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/** |
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* @var string control characters for keys, reserved by PSR-16 |
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*/ |
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const PSR16_RESERVED = '/\{|\}|\(|\)|\/|\\\\|\@|\:/u'; |
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/** |
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* @var array map where cache key => serialized value |
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*/ |
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protected $cache = []; |
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/** |
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* @var int[] map where cache key => expiration timestamp |
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*/ |
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protected $cache_expiration = []; |
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/** |
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* @var int current frozen timestamp |
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*/ |
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protected $time; |
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/** |
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* @var int |
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*/ |
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protected $default_ttl; |
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/** |
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* @param int $default_ttl default time-to-live (in seconds) |
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*/ |
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public function __construct($default_ttl = self::DEFAULT_TTL) |
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{ |
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$this->default_ttl = $default_ttl; |
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$this->time = 0; |
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} |
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/** |
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* @param int $seconds |
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*/ |
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public function skipTime($seconds) |
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{ |
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$this->time += $seconds; |
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} |
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public function get(string $key, mixed $default = null): mixed |
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{ |
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$this->validateKey($key); |
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return isset($this->cache_expiration[$key]) && ($this->time < $this->cache_expiration[$key]) |
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? unserialize($this->cache[$key]) |
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: $default; |
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} |
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public function set(string $key, mixed $value, DateInterval|int|null $ttl = null): bool |
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{ |
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$this->validateKey($key); |
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if (is_int($ttl)) { |
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$expires_at = $this->time + $ttl; |
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} elseif ($ttl instanceof DateInterval) { |
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$expires_at = date_create_from_format("U", $this->time)->add($ttl)->getTimestamp(); |
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} elseif ($ttl === null) { |
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$expires_at = $this->time + $this->default_ttl; |
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} else { |
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throw new InvalidArgumentException("invalid TTL: " . print_r($ttl, true)); |
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} |
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$this->cache[$key] = serialize($value); |
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$this->cache_expiration[$key] = $expires_at; |
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return true; |
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} |
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public function delete(string $key): bool |
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{ |
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$this->validateKey($key); |
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$success = true; |
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if (! isset($this->cache[$key]) || ! isset($this->cache_expiration[$key])) { |
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$success = false; |
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} |
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unset($this->cache[$key]); |
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unset($this->cache_expiration[$key]); |
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return $success; |
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} |
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public function clear(): bool |
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{ |
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$this->cache = []; |
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$this->cache_expiration = []; |
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return true; |
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} |
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public function getMultiple(iterable $keys, mixed $default = null): iterable |
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{ |
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$values = []; |
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foreach ($keys as $key) { |
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$this->validateKey($key); |
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$values[$key] = $this->get($key) ?: $default; |
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} |
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return $values; |
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} |
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public function setMultiple(iterable $values, DateInterval|int|null $ttl = null): bool |
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{ |
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foreach ($values as $key => $value) { |
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$this->validateKey($key); |
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$this->set($key, $value, $ttl); |
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} |
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return true; |
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} |
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public function deleteMultiple(iterable $keys): bool |
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{ |
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foreach ($keys as $key) { |
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$this->validateKey($key); |
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$this->delete($key); |
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} |
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return true; |
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} |
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public function has(string $key): bool |
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{ |
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return $this->get($key, $this) !== $this; |
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} |
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protected function validateKey($key) |
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{ |
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if (preg_match(self::PSR16_RESERVED, $key, $match) === 1) { |
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throw new InvalidArgumentException("invalid character in key: {$match[0]}"); |
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} |
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} |
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} |
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kodus /
mock-cache
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