PHP实现开源Apache Dubbo框架

//启动 TCP 服务器
$server = new SwooleServer($host, $port, SWOOLE_PROCESS, SWOOLE_SOCK_TCP);

//监听连接事件
$server->on('connect', function ($server, $fd) use ($provider) {
    //将提供的服务信息发送给注册中心
    $message = [
        'type' => 'register',
        'serviceName' => $provider['serviceName'],
        'ip' => $provider['ip'],
        'port' => $provider['port'],
    ];
    $server->send($fd, json_encode($message));
});

//启动服务器
$server->start();

//创建 TCP 客户端
$client = new SwooleClient(SWOOLE_SOCK_TCP);

//连接至注册中心
$client->connect($host, $port);

//发送获取服务提供者信息的请求
$message = [
    'type' => 'subscribe',
    'serviceName' => $serviceName,
];
$client->send(json_encode($message));

//监听服务提供者信息
$client->on('receive', function ($client, $data) use ($serviceName) {
    //解析从注册中心获取的服务提供者信息
    $providersInfo = json_decode($data, true);
    //根据负载均衡算法获取提供者，并远程调用服务
    $provider = loadBalance($providersInfo);
    callRemoteService($provider['ip'], $provider['port'], $serviceName, $params);
});

$request = [
    'path' => $serviceName,
    'method' => $methodName,
    'params' => $params,
];

//连接至服务提供者
$client = new SwooleClient(SWOOLE_SOCK_TCP);
$client->connect($ip, $port);

//将请求信息发送给提供者
$client->send(json_encode($request));

//接收并解析提供者返回的结果
$result = json_decode($client->recv(), true);

//返回调用结果
return $result;