关于laravel:Laravel-connmix-开发分布式-WebSocket-聊天室

Laravel + connmix 开发分布式 WebSocket 聊天室

Star https://github.com/connmix/ex… 获取最新版本的示例

connmix 是一个基于 go + lua 开发面向音讯编程的分布式长连贯引擎，可用于互联网、即时通讯、APP 开发、网络游戏、硬件通信、智能家居、物联网等畛域的开发，反对
java,php,go,nodejs 等各种语言的客户端。

Laravel 是 PHP 业界公认最优雅的传统框架，当然你也能够抉择 thinkphp 等其余框架。

两者联合可疾速开发出性能强劲的分布式 websocket 长连贯服务，非常适合开发 IM、聊天室、客服零碎、直播弹幕、页游等需要。

装置

1. 装置 CONNMIX 引擎：https://connmix.com/docs/1.0/…
2. 装置最新版本的 Laravel 框架

composer create-project laravel/laravel laravel-chat

3. 而后装置 connmix-php 客户端

cd laravel-chat
composer require connmix/connmix

解决方案

• 在命令行中应用 connmix 客户端生产内存队列 (前端发送的 WebSocket 音讯)。
• 咱们抉择 Laravel 的命令行模式，也就是 console 来编写业务逻辑，这样就能够应用 Laravel 的 DB、Redis 等各种生态库。

API 设计

作为一个聊天室，在入手之前咱们须要先设计 WebSocket API 接口，咱们采纳最宽泛的 json 格局来传递数据，交互采纳经典的 pubsub 模式。

数据库设计

咱们须要做登录，因而须要一个 users 表来解决鉴权，这里只是为了演示因而表设计特意简化。

• 文件门路：users.sql

CREATE TABLE `users`
(
    `id`       int          NOT NULL AUTO_INCREMENT,
    `name`     varchar(255) NOT NULL,
    `email`    varchar(255) NOT NULL,
    `password` varchar(255) NOT NULL,
    PRIMARY KEY (`id`),
    UNIQUE KEY `idx_n` (`name`)
);

房间 table 这里临时不做设计，大家自行扩大。

批改 entry.lua

用户登录须要在 lua 协定减少 conn:wait_context_value 来实现，咱们批改 entry.lua 如下：

• 文件门路：entry.lua
• protocol_input 批改绑定的 url 门路
• on_message 减少阻塞期待上下文

require("prettyprint")
local mix_log = mix.log
local mix_DEBUG = mix.DEBUG
local websocket = require("protocols/websocket")
local queue_name = "chat"

function init()
    mix.queue.new(queue_name, 100)
end

function on_connect(conn)
end

function on_close(err, conn)
    --print(err)
end

--buf 为一个对象，是一个正本
-- 返回值必须为 int, 返回包截止的长度 0= 持续期待,-1= 断开连接
function protocol_input(buf, conn)
    return websocket.input(buf, conn, "/chat")
end

-- 返回值反对任意类型, 当返回数据为 nil 时，on_message 将不会被触发
function protocol_decode(str, conn)
    return websocket.decode(conn)
end

-- 返回值必须为 string, 当返回数据不是 string, 或者为空, 发送音讯时将返回失败谬误
function protocol_encode(str, conn)
    return websocket.encode(str)
end

--data 为任意类型, 值等于 protocol_decode 返回值
function on_message(data, conn)
    --print(data)
    if data["type"] ~= "text" then
        return
    end

    local auth_op = "auth"
    local auth_key = "uid"

    local s, err = mix.json_encode({frame = data, uid = conn:context()[auth_key] })
    if err then
       mix_log(mix_DEBUG, "json_encode error:" .. err)
       return
    end

    local tb, err = mix.json_decode(data["data"])
    if err then
       mix_log(mix_DEBUG, "json_decode error:" .. err)
       return
    end

    local n, err = mix.queue.push(queue_name, s)
    if err then
       mix_log(mix_DEBUG, "queue push error:" .. err)
       return
    end

    if tb["op"] == auth_op then
       conn:wait_context_value(auth_key)
    end
end

编写业务逻辑

而后咱们在 console 编写代码，生成一个命令行 class

php artisan make:command Chat

• 文件门路：Console/Commands/Chat.php

咱们应用 connmix-php 客户端来解决内存队列的生产。

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Nette\Utils\ArrayHash;
use phpDocumentor\Reflection\DocBlock\Tags\BaseTag;

class Chat extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'command:chat';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Command description';

    /**
     * Execute the console command.
     *
     * @return int
     */
    public function handle()
    {$client = \Connmix\ClientBuilder::create()
            ->setHost('127.0.0.1:6787')
            ->build();
        $onConnect = function (\Connmix\AsyncNodeInterface $node) {
            // 生产内存队列
            $node->consume('chat');
        };
        $onReceive = function (\Connmix\AsyncNodeInterface $node) {$message = $node->message();
            switch ($message->type()) {
                case "consume":
                    $clientID = $message->clientID();
                    $data = $message->data();

                    // 解析
                    $json = json_decode($data['frame']['data'], true);
                    if (empty($json)) {$node->meshSend($clientID, '{"error":"Json format error"}');
                        return;
                    }
                    $op = $json['op'] ?? '';
                    $args = $json['args'] ?? [];
                    $uid = $data['uid'] ?? 0;

                    // 业务逻辑
                    switch ($op) {
                        case 'auth':
                            $this->auth($node, $clientID, $args);
                            break;
                        case 'subscribe':
                            $this->subscribe($node, $clientID, $args, $uid);
                            break;
                        case 'unsubscribe':
                            $this->unsubscribe($node, $clientID, $args, $uid);
                            break;
                        case 'sendtoroom':
                            $this->sendToRoom($node, $clientID, $args, $uid);
                            break;
                        case 'sendtouser':
                            $this->sendToUser($node, $clientID, $args, $uid);
                            break;
                        case 'sendbroadcast':
                            $this->sendBroadcast($node, $clientID, $args, $uid);
                            break;
                        default:
                            return;
                    }
                    break;
                case "result":
                    $success = $message->success();
                    $fail = $message->fail();
                    $total = $message->total();
                    break;
                case "error":
                    $error = $message->error();
                    break;
                default:
                    $payload = $message->payload();}
        };
        $onError = function (\Throwable $e) {
            // handle error
            print 'ERROR:' . $e->getMessage() . PHP_EOL;};
        $client->do($onConnect, $onReceive, $onError);
        return 0;
    }

    /**
     * @param \Connmix\AsyncNodeInterface $node
     * @param int $clientID
     * @param array $args
     * @return void
     */
    protected function auth(\Connmix\AsyncNodeInterface $node, int $clientID, array $args)
    {list($name, $password) = $args;
        $row = \App\Models\User::query()->where('name', '=', $name)->where('password', '=', $password)->first();
        if (empty($row)) {
            // 验证失败，设置一个非凡值解除 lua 代码阻塞
            $node->setContextValue($clientID, 'user_id', 0);
            $node->meshSend($clientID, '{"op":"auth","error":"Invalid name or password"}');
            return;
        }

        // 设置上下文解除 lua 代码阻塞
        $node->setContextValue($clientID, 'uid', $row['id']);
        $node->meshSend($clientID, '{"op":"auth","success":true}');
    }


    /**
     * @param \Connmix\AsyncNodeInterface $node
     * @param int $clientID
     * @param array $args
     * @param int $uid
     * @return void
     */
    protected function subscribe(\Connmix\AsyncNodeInterface $node, int $clientID, array $args, int $uid)
    {
        // 登录判断
        if (empty($uid)) {$node->meshSend($clientID, '{"op":"subscribe","error":"No access"}');
            return;
        }

        // 此处省略业务权限效验
        // ...

        $node->subscribe($clientID, ...$args);
        $node->meshSend($clientID, '{"op":"subscribe","success":true}');
    }

    /**
     * @param \Connmix\AsyncNodeInterface $node
     * @param int $clientID
     * @param array $args
     * @param int $uid
     * @return void
     */
    protected function unsubscribe(\Connmix\AsyncNodeInterface $node, int $clientID, array $args, int $uid)
    {
        // 登录判断
        if (empty($uid)) {$node->meshSend($clientID, '{"op":"unsubscribe","error":"No access"}');
            return;
        }

        $node->unsubscribe($clientID, ...$args);
        $node->meshSend($clientID, '{"op":"unsubscribe","success":true}');
    }

    /**
     * @param \Connmix\AsyncNodeInterface $node
     * @param int $clientID
     * @param array $args
     * @param int $uid
     * @return void
     */
    protected function sendToRoom(\Connmix\AsyncNodeInterface $node, int $clientID, array $args, int $uid)
    {
        // 登录判断
        if (empty($uid)) {$node->meshSend($clientID, '{"op":"sendtoroom","error":"No access"}');
            return;
        }

        // 此处省略业务权限效验
        // ...

        list($channel, $message) = $args;
        $message = sprintf('uid:%d,message:%s', $uid, $message);
        $node->meshPublish($channel, sprintf('{"event":"subscribe","channel":"%s","data":"%s"}', $channel, $message));
        $node->meshSend($clientID, '{"op":"sendtoroom","success":true}');
    }

    /**
     * @param \Connmix\AsyncNodeInterface $node
     * @param int $clientID
     * @param array $args
     * @param int $uid
     * @return void
     */
    protected function sendToUser(\Connmix\AsyncNodeInterface $node, int $clientID, array $args, int $uid)
    {
        // 登录判断
        if (empty($uid)) {$node->meshSend($clientID, '{"op":"sendtouser","error":"No access"}');
            return;
        }

        // 此处省略业务权限效验
        // ...

        list($channel, $message) = $args;
        $message = sprintf('uid:%d,message:%s', $uid, $message);
        $node->meshPublish($channel, sprintf('{"event":"subscribe","channel":"%s","data":"%s"}', $channel, $message));
        $node->meshSend($clientID, '{"op":"sendtouser","success":true}');
    }

    /**
     * @param \Connmix\AsyncNodeInterface $node
     * @param int $clientID
     * @param array $args
     * @param int $uid
     * @return void
     */
    protected function sendBroadcast(\Connmix\AsyncNodeInterface $node, int $clientID, array $args, int $uid)
    {
        // 登录判断
        if (empty($uid)) {$node->meshSend($clientID, '{"op":"sendbroadcast","error":"No access"}');
            return;
        }

        // 此处省略业务权限效验
        // ...

        $channel = 'broadcast';
        list($message) = $args;
        $message = sprintf('uid:%d,message:%s', $uid, $message);
        $node->meshPublish($channel, sprintf('{"event":"subscribe","channel":"%s","data":"%s"}', $channel, $message));
        $node->meshSend($clientID, '{"op":"sendbroadcast","success":true}');
    }
}

调试

启动服务

• 启动 connmix 引擎

% bin/connmix dev -f conf/connmix.yaml 

• 启动 Laravel 命令行 (能够启动多个来减少性能)

% php artisan command:chat

WebSocket Client 1

连贯：ws://127.0.0.1:6790/chat

• 登录

send: {"op":"auth","args":["user1","123456"]}
receive: {"op":"auth","success":true}

• 退出房间

send: {"op":"subscribe","args":["room_101"]}
receive: {"op":"subscribe","success":true}

• 发送音讯

send: {"op":"sendtoroom","args":["room_101","hello,world!"]}
receive: {"event":"subscribe","channel":"room_101","data":"uid:1,message:hello,world!"}
receive: {"op":"sendtoroom","success":true}

WebSocket Client 2

连贯：ws://127.0.0.1:6790/chat

• 登录

send: {"op":"auth","args":["user2","123456"]}
receive: {"op":"auth","success":true}

• 退出房间

send: {"op":"subscribe","args":["room_101"]}
receive: {"op":"subscribe","success":true}

• 接管音讯

receive: {"event":"subscribe","channel":"room_101","data":"uid:1,message:hello,world!"}

结语

基于 connmix 客户端咱们只需很少的代码就能够疾速打造一个分布式长连贯服务。