The RPC service based on ThinkPHP6 and Swoole implements the file transfer function

Introduction:
With the development of the Internet, file transfer has become a part of our daily work more and more important. In order to improve the efficiency and security of file transfer, this article will introduce the specific implementation method of the RPC service based on ThinkPHP6 and Swoole to implement the file transfer function. We will use ThinkPHP6 as the web framework and utilize Swoole's RPC function to achieve cross-server file transfer.

1. Environment preparation
Before starting, we need to ensure that the following development environment has been correctly installed:

1. PHP >= 7.2
2. Composer
3. Swoole extension
4. ThinkPHP6 framework (including Swoole components)

2. Create a project
Before we start, we need to create a project based on ThinkPHP6 . The project can be created through the following command:

composer create-project topthink/think myproject

After the creation is completed, we need to enter the project directory and start the project:

cd myproject
php think run

3. Install the Swoole component
After creating the project, we Swoole component needs to be installed. Execute the following command in the project root directory to install the Swoole component:

composer require topthink/think-swoole

After the installation is completed, we need to make the corresponding configuration in the configuration file config/swoole.php to enable Swoole RPC service:

<?php
return [
    'rpc' => [
        'server' => [
            'enable' => true,
            'host' => '0.0.0.0',
            'port' => 9501,
            'worker_num' => 4,
        ],
        'clients' => [
            // 添加需要調(diào)用的遠(yuǎn)程服務(wù)
        ],
    ],
];

4. Create a file transfer server
Now we can start to create an RPC server with file transfer function. First, we need to create a FileTransferService.php file in the app/rpc directory to write business logic related to file transfer.

<?php
namespace apppc;

class FileTransferService
{
    // 接收文件并保存到指定路徑
    public function save($filename, $data)
    {
        $filePath = './uploads/' . $filename;
        file_put_contents($filePath, $data);
        return true;
    }

    // 下載文件
    public function download($filename)
    {
        $filePath = './uploads/' . $filename;
        return file_get_contents($filePath);
    }
}

5. Create a file transfer client
Next, we need to create a file transfer client to call the server method for file transfer. Create a FileController.php file in the app/controller directory for writing client controller code.

<?php
namespace appcontroller;

use thinkacadeRpc;

class FileController
{
    // 上傳文件
    public function upload()
    {
        $file = request()->file('file');
        $filename = $file->getOriginalName();
        $data = file_get_contents($file->getRealPath());

        Rpc::service('FileTransferService')->save($filename, $data);

        return '文件上傳成功';
    }

    // 下載文件
    public function download()
    {
        $filename = 'example.pdf';

        $data = Rpc::service('FileTransferService')->download($filename);

        ob_clean();
        header('Content-Disposition: attachment; filename="' . $filename . '"');
        echo $data;
        exit;
    }
}

6. Configure routing
In order to access the controller method of file transfer, we need to configure routing in the route/route.php file. Add the following code to the file:

<?php
use thinkacadeRoute;

Route::post('file/upload', 'FileController/upload');
Route::get('file/download', 'FileController/download');

7. Test the file transfer function
Now we can test whether the file transfer function is working properly. First, start Swoole's RPC service in the project root directory:

php think rpc:server

Then, we can use Postman or other tools to test the file upload and download functions through HTTP requests. When uploading a file, the requested URL is http://localhost:9501/file/upload, the request method is set to POST, and file upload is selected in the Body, and a local file is selected for uploading. When downloading a file, the requested URL is http://localhost:9501/file/download, and the request method is set to GET.

8. Summary
This article introduces the specific implementation method of the RPC service based on ThinkPHP6 and Swoole to realize the file transfer function. By using the web framework provided by ThinkPHP6 and Swoole's RPC function, we can quickly build a cross-server file transfer system. I hope this article can be helpful to everyone when implementing the file transfer function.

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