Proyectos de Subversion Moodle

<?php

namespace Aws\Identity\S3;

use Aws;

use Aws\LruArrayCache;

use GuzzleHttp\Promise;

class S3ExpressIdentityProvider

{

    private $cache;

    private $region;

    private $config;

    private $s3Client;

    public function __construct($clientRegion, array $config = [])

    {

        $this->cache = new LruArrayCache(100);

        $this->region = $clientRegion;

        $this->config = $config;

    }

    public function __invoke($command)

    {

        $s3Client = $this->getS3Client();

        $bucket = $command['Bucket'];

        if ($identity = $this->cache->get($bucket)) {

            if (!$identity->isExpired()) {

                return Promise\Create::promiseFor($identity);

            }

        }

        $response = $s3Client->createSession(['Bucket' => $bucket]);

        $identity = new Aws\Identity\S3\S3ExpressIdentity(

            $response['Credentials']['AccessKeyId'],

            $response['Credentials']['SecretAccessKey'],

            $response['Credentials']['SessionToken'],

            $response['Credentials']['Expiration']->getTimestamp()

        );

        $this->cache->set($bucket, $identity);

        return Promise\Create::promiseFor($identity);

    }

    private function getS3Client()

    {

        if (is_null($this->s3Client)) {

            $this->s3Client = $this->config['client']

                ?? new Aws\S3\S3Client([

                    'region' => $this->region,

                    'disable_express_session_auth' => true

                ]);

        }

        return $this->s3Client;

    }

}