Returns the list of tags bound to the value coming from the pool storage if any.
*
* @deprecated since Symfony 4.2, use the "getMetadata()" method instead.
*/
public function getPreviousTags(): array
{
@trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the "getMetadata()" method instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->metadata[self::METADATA_TAGS] ?? [];
}
/**
* Validates a cache key according to PSR-6.
*
* @param mixed $key The key to validate
*
* @throws InvalidArgumentException When $key is not valid
*/
public static function validateKey($key): string
{
if (!\is_string($key)) {
throw new InvalidArgumentException(sprintf('Cache key must be string, "%s" given.', \is_object($key) ? \get_class($key) : \gettype($key)));
}
if ('' === $key) {
throw new InvalidArgumentException('Cache key length must be greater than zero.');
}
if (false !== strpbrk($key, self::RESERVED_CHARACTERS)) {
throw new InvalidArgumentException(sprintf('Cache key "%s" contains reserved characters "%s".', $key, self::RESERVED_CHARACTERS));
}
return $key;
}
/**
* Internal logging helper.
*
* @internal
*/
public static function log(?LoggerInterface $logger, string $message, array $context = [])
{
if ($logger) {
$logger->warning($message, $context);
} else {
$replace = [];
foreach ($context as $k => $v) {
if (\is_scalar($v)) {
$replace['{'.$k.'}'] = $v;
}
}
@trigger_error(strtr($message, $replace), \E_USER_WARNING);
}
}
}
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