Distributed RPC service architecture design based on TP6 Think-Swoole

Distributed RPC service architecture design based on TP6 Think-Swoole

With the continuous development of the Internet, the demand for distributed systems is increasing day by day. Distributed systems can deploy each module separately on different servers to provide higher scalability and reliability. As a common communication method, RPC (Remote Procedure Call) can realize remote calls between different modules, further promoting the development of distributed systems.

In this article, we will explore how to design a distributed RPC service architecture based on the TP6 Think-Swoole framework and provide specific code examples.

1. Architecture design
Our distributed RPC service architecture will include three main components: service provider, service consumer and service registration center.

Service provider: Responsible for exposing the service interface, receiving and processing RPC requests.
Service consumer: Responsible for initiating RPC requests and obtaining responses from service providers.
Service Registration Center: Responsible for managing the address information of service providers.

2. Implementation steps

(1) Configuration file
First, create the config folder in the TP6 framework and create rpc.php in it as RPC configuration file. The configuration file contains the following content:

return [
    'server' => [
        'host' => '127.0.0.1',
        'port' => 9501,
    ],
    'registry' => [
        'host' => '127.0.0.1',
        'port' => 2181,
    ],
];

(2) Service provider side implementation
On the service provider side, we need to create a Server class to handle RPC requests and register the service address to the service registration center. The specific code is as follows:

<?php

namespace apppcserver;

use thinkswooleServer;

class RpcServer extends Server
{
    protected $rpcService;

    public function __construct($host, $port)
    {
        parent::__construct($host, $port);
        $this->rpcService = new RpcService(); // 自定义的服务类
    }

    public function onReceive(SwooleServer $server, int $fd, int $reactor_id, string $data)
    {
        // 处理RPC请求
        $result = $this->rpcService->handleRequest($data);
        
        // 发送响应结果给客户端
        $server->send($fd, $result);
    }

    public function onWorkerStart(SwooleServer $server, int $worker_id)
    {
        // 注册服务到服务注册中心
        $this->registerService();
    }

    private function registerService()
    {
        // 获取注册中心的地址信息
        $registryHost = config('rpc.registry.host');
        $registryPort = config('rpc.registry.port');

        // 使用Zookeeper等方式注册服务
        // ...
    }
}

(3) Service consumer side implementation
On the service consumer side, we need to create a Client class to initiate an RPC request. The specific code is as follows:

<?php

namespace apppcclient;

use thinkswooleRpc;
use thinkswooleRpcClient;
use thinkswooleRpcService;
use thinkswooleRpcProtocol;

class RpcClient
{
    protected $client;

    public function __construct()
    {
        $this->client = new Client(new Protocol(), new Service());
    }

    public function request($service, $method, $params = [])
    {
        // 创建RPC请求并发送
        $rpc = new Rpc($service, $method, $params);
        $response = $this->client->sendAndRecv($rpc);
        
        // 处理响应结果并返回
        return $response->getResult();
    }
}

(4) Registration center implementation
In the registration center, we use Zookeeper as the service registration center. The specific code is as follows:

<?php

namespace apppcegistry;

use zookeeper;

class Registry
{
    protected $zk;

    public function __construct($host, $port)
    {
        $this->zk = new zookeeper($host . ':' . $port);
    }

    public function register($path, $data)
    {
        // 创建节点并注册服务地址信息
        $this->zk->create($path, $data, []);
    }

    public function getServiceUrl($path)
    {
        // 获取服务地址信息
        return $this->zk->get($path);
    }
}

3. Usage example

(1) Start the RPC server on the service provider side

$rpcServer = new pppcserverRpcServer(config('rpc.server.host'), config('rpc.server.port'));
$rpcServer->start();

(2) In the service The consumer initiates an RPC request

$rpcClient = new pppcclientRpcClient();
$result = $rpcClient->request('app\rpc\server\RpcService', 'hello', ['name' => 'John']);
echo $result;

(3) Registers the service in the registration center

$registry = new pppcegistryRegistry(config('rpc.registry.host'), config('rpc.registry.port'));
$registry->register('/rpc/services/RpcService', '127.0.0.1:9501');

The above is a specific code example of the distributed RPC service architecture design based on TP6 Think-Swoole. Through such an architecture, we can realize remote calls between different modules in the distributed system and improve the scalability and reliability of the system. I hope this article will help you understand the design and implementation of distributed RPC services.

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