클라우드 컴퓨팅 환경에서 PHP 디자인 패턴 적용

interface S3ClientInterface
{
    public function upload(string $file, string $bucket);
}

class AwsS3Client implements S3ClientInterface
{
    // ... AWS S3 客户端实现 ...
}

class AzureS3Client implements S3ClientInterface
{
    // ... Azure S3 客户端实现 ...
}

class S3ClientFactory
{
    public static function create(string $type): S3ClientInterface
    {
        switch ($type) {
            case 'aws':
                return new AwsS3Client();
            case 'azure':
                return new AzureS3Client();
            default:
                throw new InvalidArgumentException("Invalid S3 client type: $type");
        }
    }
}

// 根据需要创建 client
$client = S3ClientFactory::create('aws');
$client->upload('file.txt', 'my-bucket');

class ThirdPartyCDNClient
{
    public function push(string $file, string $url)
    {
        // ... 第三方 CDN 推送实现 ...
    }
}

class CDNAdapter implements CDNInterface
{
    private $client;

    public function __construct(ThirdPartyCDNClient $client)
    {
        $this->client = $client;
    }

    public function push(string $file, string $url)
    {
        $this->client->push($file, $url);
    }
}

// 使用适配器
$cdn = new CDNAdapter(new ThirdPartyCDNClient());
$cdn->push('file.txt', 'https://example.com/file.txt');