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<?php
declare(strict_types=1);
namespace Http\Factory\Discovery;
use RuntimeException;
abstract class DiscoveryCache
{
/** @var array */
private static $cache = [];
protected static function makeInstance(string $interface)
if (! isset(self::$cache[$interface])) {
$implementation = static::locate($interface);
self::$cache[$interface] = new $implementation();
}
return self::$cache[$interface];
public static function clearCache(?string $interface = null): void
if ($interface === null) {
self::$cache = [];
} else {
unset(self::$cache[$interface]);
/**
* @throws RuntimeException If no implementation is available
*/
abstract protected static function locate(string $interface): string;
http-interop /
http-factory-discovery
