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关于hyperf:hyperf从零开始构建微服务二构建服务消费者

浏览目录

  • 构建服务消费者
  • 装置 json rpc 依赖
  • 装置 JSON RPC 客户端
  • server 配置
  • 编写业务代码
  • 编写服务消费者类
  • consumer 配置
  • 配置 UserServiceInterface
  • 编写 UserController
  • postman 测试
  • 主动配置服务消费者
  • 配置优化
  • 对立后果解决

咱们说过,服务提供者能够提供各种服务,它能够和数据库进行交互;服务消费者是纯生产的服务,只须要近程拜访服务提供者即可。

上面咱们按步骤构建消费者模块。

源码已上传至 github,https://github.com/bailangzha…

1、构建服务消费者

除了对时区进行设置,其余的组件临时都不装置,抉择“n”即可。

composer create-project hyperf/hyperf-skeleton shop_consumer_user 
Creating a "hyperf/hyperf-skeleton" project at "./shop_consumer_user"
Installing hyperf/hyperf-skeleton (v2.2.1)
  - Installing hyperf/hyperf-skeleton (v2.2.1): Extracting archive
Created project in /data/web/test/hyperf-rpc/shop_consumer_user
> @php -r "file_exists('.env') || copy('.env.example','.env');"
> Installer\Script::install
Setting up optional packages
Setup data and cache dir
Removing installer development dependencies
  What time zone do you want to setup ?
  [n] Default time zone for php.ini
Make your selection or type a time zone name, like Asia/Shanghai (n):
Asia/Shanghai
  Do you want to use Database (MySQL Client) ?
  [y] yes
  [n] None of the above
  Make your selection or type a composer package name and version (yes): n
  Do you want to use Redis Client ?
  [y] yes
  [n] None of the above
  Make your selection or type a composer package name and version (yes): n
  Which RPC protocol do you want to use ?
  [1] JSON RPC with Service Governance
  [2] JSON RPC
  [3] gRPC
  [n] None of the above
  Make your selection or type a composer package name and version (n): n
  Which config center do you want to use ?
  [1] Apollo
  [2] Aliyun ACM
  [3] ETCD
  [4] Nacos
  [n] None of the above
  Make your selection or type a composer package name and version (n): n
  Do you want to use hyperf/constants component ?
  [y] yes
  [n] None of the above
  Make your selection (n): n
  Do you want to use hyperf/async-queue component ? (A simple redis queue component)
  [y] yes
  [n] None of the above
  Make your selection or type a composer package name and version (n): n
  Do you want to use hyperf/amqp component ?
  [y] yes
  [n] None of the above
  Make your selection or type a composer package name and version (n): n
  Do you want to use hyperf/model-cache component ?
  [y] yes
  [n] None of the above
  Make your selection or type a composer package name and version (n): n
  Do you want to use hyperf/elasticsearch component ?
  [y] yes
  [n] None of the above
  Make your selection or type a composer package name and version (n): n
  Do you want to use hyperf/tracer component ? (An open tracing protocol component, adapte with Zipkin etc.)
  [y] yes
  [n] None of the above
  Make your selection or type a composer package name and version (n): n

2、装置 json rpc 依赖

cd shop_consumer_user
composer require hyperf/json-rpc

3、装置 JSON RPC 客户端

shop_consumer_user 不须要对外提供服务,所以咱们只装置客户端,不须要装置 hyperf/rpc-server 组件

composer require hyperf/rpc-client

4、server 配置

server 的配置这里用默认的就好了,9501 端口提供 http 服务,不须要改变

'servers' => [
    [
        'name' => 'http',
        'type' => Server::SERVER_HTTP,
        'host' => '0.0.0.0',
        'port' => 9501,
        'sock_type' => SWOOLE_SOCK_TCP,
        'callbacks' => [Event::ON_REQUEST => [Hyperf\HttpServer\Server::class, 'onRequest'],
        ],
    ],
],

5、编写业务代码

5-1、编写服务消费者类

app 下新建 JsonRpc 目录,编写 UserService.php 和 UserServiceInterface.php 文件

【UserServiceInterface.php】<?php
namespace App\JsonRpc;
interface UserServiceInterface
{public function createUser(string $name, int $gender);
    public function getUserInfo(int $id);
}
<span class="redactor-invisible-space">

</span>【UserService.php】<?php
namespace App\JsonRpc;
use Hyperf\RpcClient\AbstractServiceClient;
class UserService extends AbstractServiceClient implements UserServiceInterface
{
    /**
     * 定义对应服务提供者的服务名称
     * @var string
     */
    protected $serviceName = 'UserService';
    /**
     * 定义对应服务提供者的服务协定
     * @var string
     */
    protected $protocol = 'jsonrpc-http';
    /**
     * @param string $name
     * @param int $gender
     * @return mixed
     */
    public function createUser(string $name, int $gender)
    {return $this->__request(__FUNCTION__, compact('name', 'gender'));
    }
    /**
     * @param int $id
     * @return mixed
     */
    public function getUserInfo(int $id)
    {return $this->__request(__FUNCTION__, compact('id'));
    }
}

hyperf 官网的 hyperf/rpc-client 组件曾经帮咱们实现了 rpc 近程调用的实现,所以咱们只须要再配置一下服务消费者,通知 hyperf 从哪个节点哪个端口调用即可。

5-2、consumer 配置

config/autoload/services.php 内定义 consumers 如下:(没有 services.php 文件的能够自行创立)

<?php
return [
    'consumers' => [
        [
            // 对应消费者类的 $serviceName
            'name' => 'UserService',
            // 间接对指定的节点进行生产,通过上面的 nodes 参数来配置服务提供者的节点信息
            'nodes' => [['host' => '127.0.0.1', 'port' => 9600],
            ],
        ]
    ],
];

5-3、配置 UserServiceInterface

为了能够不便的注入 UserServiceInterface,咱们在 config/autoload/dependencies.php 内定义 UserServiceInterface 和 UserService 的关系如下:

App\JsonRpc\UserServiceInterface::class => App\JsonRpc\UserService::class,

5-4、编写 UserController,实现获取用户和创立用户的接口调用

【app\Controller\UserController.php】<?php
declare(strict_types=1);
namespace App\Controller;
use App\JsonRpc\UserServiceInterface;
use Hyperf\Di\Annotation\Inject;
use Hyperf\HttpServer\Annotation\AutoController;
/**
 * Class UserController
 * @package App\Controller
 * @AutoController()
 */
class UserController extends AbstractController
{
    /**
     * @Inject()
     * @var UserServiceInterface
     */
    private $userServiceClient;
    public function createUser()
    {$name = (string) $this->request->input('name', '');
        $gender = (int) $this->request->input('gender', 0);
        return $this->userServiceClient->createUser($name, $gender);
    }
    public function getUserInfo()
    {$id = (int) $this->request->input('id');
        return $this->userServiceClient->getUserInfo($id);
    }
}

6、postman 拜访测试

启动 shop_consumer_user 我的项目的同时,务必要保障 shop_provider_user 也启动了,不然申请会失败。

7、主动配置服务消费者

你可能曾经留神到 app\JsonRpc\UserService 类的办法并没有实际意义,只是构建参数发动申请并返回响应后果,千篇一律的操作着实减少了复杂度。hyperf 反对主动配置服务消费者代理类(生产者暂不反对主动配置)。

主动配置非常简单,只须要在 consumer 配置项减少 service 配置即可,如下:

return [
    'consumers' => [
        [
            // 对应消费者类的 $serviceName
            'name' => 'UserService',
            // 服务接口名,可选,默认值等于 name 配置的值,如果 name 间接定义为接口类则可疏忽此行配置,// 如 name 为字符串则须要配置 service 对应到接口类
            'service' => \App\JsonRpc\UserServiceInterface::class,
            // 间接对指定的节点进行生产,通过上面的 nodes 参数来配置服务提供者的节点信息
            'nodes' => [['host' => '127.0.0.1', 'port' => 9600],
            ],
        ]
    ],
];

当初咱们做两件事,测试 consumer 走的是主动配置还是手动创立的 UserService

  1. 把 config/autoload/dependencies.php 内定义 UserServiceInterface 和 UserService 的关系屏蔽
  2. 在 App\JsonRpc\UserService::getUserInfo() 办法内打印点数据测试
GET 申请 http://127.0.0.1:9501/user/getUserInfo?id=2
后果发现控制台并没有任何输入,走的是主动配置的 consumer

反过来

  1. 咱们再把 config/autoload/dependencies.php 内定义 UserServiceInterface 和 UserService 的关系放开
  2. 把 config/autoload/services.php 文件内 consumers 的配置项 service 屏蔽
GET 申请 http://127.0.0.1:9501/user/getUserInfo?id=2
string(36) "App\JsonRpc\UserService::getUserInfo"
发现控制台输入了咱们在 App\JsonRpc\UserService::getUserInfo() 办法内打印的数据,走的是手动创立的 consumer

在没有非凡状况下,后续 consumer 咱们仅做配置,不在手动创立,因为没有创立的必要。

8、配置优化

咱们留神到 config/autoload/services.php 文件内 consumers 的配置,一个服务是一个配置,服务消费者须要生产的服务可能很多,所以咱们很有必要优化下这里的写法,上面是参考官网的写法:

// 服务定义
$consumerServices = ['UserService' => \App\JsonRpc\UserServiceInterface::class,];
return ['consumers' => value(function () use ($consumerServices) {$consumers = [];
        foreach ($consumerServices as $name => $interface) {$consumers[] = [
                'name' => $name,
                'service' => $interface,
                'nodes' => [['host' => '127.0.0.1', 'port' => 9600],
                ],
            ];
        }
        return $consumers;
    }),
];

这样一来,咱们每次只须要在数组 $consumerServices 内增加须要新的服务即可。

最初,咱们来看一个比拟大的问题。

consumer 拿到的后果,又是字符串又是对象,还动不动间接 Internal Server Error. 数据格式的不对立十分不利于前端小伙伴解析。

对立后果解决

为了标准,咱们制订了一个简略的规范,对立返回带有 code,message,data 的数据格式,有趣味的小伙伴能够先钻研下怎么解决这个问题,咱们下一节持续。

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