S3Client client as Yii2 component for store files and text

FileServer.php

<?php
/**
 * Created by Maxim Novikov.
 * Date: 21.09.17 - 15:09
 */

namespace prometheus\core\components;


use Aws\S3\S3Client;
use yii\base\Component;
use yii\base\UserException;

/**
 * Class FileServer работа с общим хранилищем файлов
//        $this->storeString('testkey', 'my data ');
//        $this->storeFile('testfile', '/home/mlex/www-last.tar.xz');
//        $this->getAsFile('testfile', '/home/mlex/public_html/prometheus/public/uploads/test.tar.gz');
//        $this->delete(['testkey', 'testfile']);
 * @package prometheus\core\components
 */
class FileServer extends Component
{
    var $server = 'http://{host}:{port}';
    var $bucket = '{bucket}';
    var $key = '{key}';
    var $secret = '{secret}';

    /** @var  S3Client */
    protected $service;

    public function init()
    {
        $this->service = new S3Client([
            'version' => 'latest',
            'region' => 'us-west-2',
            'endpoint' => $this->server,
            'use_path_style_endpoint' => true,
            'credentials' => [
                'key' => $this->key,
                'secret' => $this->secret,
            ],
        ]);

    }

    /**
     * @param string $key
     * @param string $value
     */
    public function storeString($key, $value)
    {
        $this->service->putObject([
            'Bucket' => $this->bucket,
            'Key' => $key,
            'Body' => $value
        ]);
    }

    /**
     * @param string $key
     * @param string $filePath путь до файла
     * @param string $contentType
     * @throws UserException
     */
    public function storeFile($key, $filePath, $contentType = 'text/plain')
    {
        if (!is_file($filePath) || !is_readable($filePath)) {
            throw new UserException('Попытка загрузить не существующий или не читаемый файл: ' . $filePath);
        }

        $this->service->putObject(array(
            'Bucket' => $this->bucket,
            'Key' => $key,
            'SourceFile' => $filePath,
            'ContentType' => 'text/plain',
            'ACL' => 'public-read',
            'StorageClass' => 'REDUCED_REDUNDANCY',
        ));
    }

    /**
     * @param string $key
     * @return string
     */
    public function getAsString($key)
    {
        $result = $this->service->getObject(array(
            'Bucket' => $this->bucket,
            'Key' => $key
        ));
        return $result['Body'];
    }

    /**
     * @param string $key
     * @param string $filePath путь до файла
     */
    public function getAsFile($key, $filePath)
    {
        $this->service->getObject(array(
            'Bucket' => $this->bucket,
            'Key' => $key,
            'SaveAs' => $filePath
        ));
    }

    /**
     * Получений публичной ссылки на файл, которая будет активна 1 час
     * @param string $key
     * @param string $time время активности ссылки
     * @return string
     */
    public function getUrl($key, $time = '+60 minutes')
    {
        $command = $this->service->getCommand('GetObject', [
            'Bucket' => $this->bucket,
            'Key' => $key
        ]);

        $request = $this->service->createPresignedRequest($command, $time);

        return (string)$request->getUri();
    }

    /**
     * @param array|string $key
     */
    public function delete($key)
    {
        if (is_array($key)) {
            foreach ($key as $item) {
                $this->service->deleteObject(array(
                    'Bucket' => $this->bucket,
                    'Key' => $item
                ));
            }
            return;
        }
        $this->service->deleteObject(array(
            'Bucket' => $this->bucket,
            'Key' => $key
        ));
    }
}