php Laravel Thrift使用TMultiplexedProcessor复用端口模式

时间:2019-06-12
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thrift的使用中一般是一个Server对应一个Processor和一个Transport,如果有多个服务的话,那必须要启动多个Server,占用多个端口,这种方式显然不是我们想要的,所以thrift为我们提供了复用端口的方式,通过监听一个端口就可以提供多种服务,这种方式需要用到两个类:TMultiplexedProcessor和TMultiplexedProtocol。

创建 2 个 Laravel 项目,thrift-server (服务端) 和 thrift-client (客户端)

 
文件目录

testServer.thrift:

namespace php Rpc.Test

enum Operation {
  ADD = 1,
  SUBTRACT = 2,
  MULTIPLY = 3,
  DIVIDE = 4
}

exception InvalidOperation {
  1: i32 whatOp,
  2: string why
}

service Calculator {
   double calculate(1:double num1, 2:double num2, 3:Operation op) throws (1:InvalidOperation ouch),
   string echoString(1: string str) ,
}

service Echo {
   string echo(1: string str) ,
}

每个service类对应一种服务,服务类下可有多个方法。

thrift-server根目录生成客户端类命令:

thrift -r --out ./ --gen php thriftSource/testServer.thrift

将生成的Rpc/Test文件夹剪切到thrift-client项目的Rpc目录中

在thrift-server根目录继续生成服务端类:

thrift -r --out ./ --gen php:server thriftSource/testServer.thrift

根目录创建Service目录,存放实现Calculator和Echo类的文件
Service/CalculatorService.php

<?php
/**
 *  实现Calculator服务
 */

namespace Service;

use Rpc\Test\CalculatorIf;
use Rpc\Test\Operation;
use Rpc\Test\InvalidOperation;

class CalculatorService implements CalculatorIf {
    /**
     * @param double $num1
     * @param double $num2
     * @param int $op
     * @return double
     * @throws InvalidOperation
     */
    public function calculate($num1, $num2, $op) {
        switch ($op) {
            case Operation::ADD:
                $val = $num1 + $num2;
                break;
            case Operation::SUBTRACT:
                $val = $num1 - $num2;
                break;
            case Operation::MULTIPLY:
                $val = $num1 * $num2;
                break;
            case Operation::DIVIDE:
                if ($num2 == 0) {
                    $io = new InvalidOperation();
                    $io->whatOp = $op;
                    $io->why = "Cannot divide by 0";
                    throw $io;
                }
                $val = $num1 / $num2;
                break;
            default:
                $io = new InvalidOperation();
                $io->whatOp = $op;
                $io->why = "Invalid Operation";
                throw $io;
        }
        return $val;
    }

    /**
     * @param $string
     */
    public function echoString($string) {
        return $string;
    }
}

Service/EchoService.php:

<?php
/**
 *  实现Echo服务
 */

namespace Service;

use Rpc\Test\EchoIf;

class EchoService implements EchoIf {

    /**
     * @param $string
     */
    public function echo($string) {
        return $string;
    }
}

thrift-server服务端控制器:

<?php
/**
 * 服务端控制器
 */

namespace App\Http\Controllers;

use Rpc\Test\CalculatorProcessor;
use Rpc\Test\EchoProcessor;
use Service\CalculatorService;
use Service\EchoService;
use Illuminate\Http\Request;
use Thrift\Protocol\TBinaryProtocol;
use Thrift\TMultiplexedProcessor;
use Thrift\Transport\TBufferedTransport;
use Thrift\Transport\TPhpStream;
use Thrift\Exception\TException;

class ServerController extends Controller
{
    /**
     * 多个服务
     * @param Request $request
     */
    function handleManyRequest(Request $request) {
        try{
            header('Content-Type', 'application/x-thrift');

            // 初始化多个服务提供者handle
            $calculatorhandler = new CalculatorService();
            $echohandler = new EchoService();

            $multiplexedProcessor = new TMultiplexedProcessor();

            // 创建多个服务Processor
            $calculatorProcessor = new CalculatorProcessor($calculatorhandler);
            $echoProcessor = new EchoProcessor($echohandler);

            // 将服务注册到TMultiplexedProcessor中
            $multiplexedProcessor->registerProcessor("calculator", $calculatorProcessor);
            $multiplexedProcessor->registerProcessor("echo", $echoProcessor);

            // 初始化数据传输方式transport
            $transport = new TBufferedTransport(new TPhpStream(TPhpStream::MODE_R | TPhpStream::MODE_W));
            // 利用该传输方式初始化数据传输格式protocol
            $protocol = new TBinaryProtocol($transport, true, true);

            // 开始服务
            $transport->open();
            $multiplexedProcessor->process($protocol, $protocol);
            $transport->close();
        } catch (TException $tx) {
            print 'TException: '.$tx->getMessage()."\n";
        }
    }
}

配置post方式路由

Route::post('/rpc/server', 'ServerController@handleManyRequest');

配置虚拟主机 8081 端口监听thrift-server服务,80端口监听thrift-client服务

thrift-client客户端控制器:

<?php
/**
 * 客户端控制器
 */

namespace App\Http\Controllers;

use Rpc\Test\Operation;
use Rpc\Test\CalculatorClient;
use Rpc\Test\EchoClient;
use Illuminate\Http\Request;
use Thrift\Protocol\TBinaryProtocol;
use Thrift\Protocol\TMultiplexedProtocol;
use Thrift\Transport\THttpClient;
use Thrift\Transport\TBufferedTransport;
use Thrift\Exception\TException;

class ClientController extends Controller
{
    /**
     * 多服务
     * @param Request $request
     */
    function handleManyRequest(Request $request) {
        try{
            // 定义连接
            $socket = new THttpClient('127.0.0.1', 8081, '/rpc/server');

            // 创建transport
            $transport = new TBufferedTransport($socket, 1024, 1024);
            // 基于Transport创建Protocol
            $protocol = new TBinaryProtocol($transport);

            // 创建Client调用服务接口的方法
            $calculatorClient = new  CalculatorClient(new TMultiplexedProtocol($protocol, "calculator"));
            $echoClient = new  EchoClient(new TMultiplexedProtocol($protocol, "echo"));

            // 开启
            $transport->open();

            // 调用接口方法
            $sum = $calculatorClient->calculate(1, 2, Operation::ADD);
            print "calculator service -> calculate function -> 1+2=$sum </br>";

            $test = $calculatorClient->echoString('this it test');
            print "calculator service -> echoString function -> echoString:$test </br>";

            $echoString = $echoClient->echo('echo method');
            print "echo service -> echo function -> echo:$echoString\n\r";

            $transport->close();

        } catch (TException $tx) {
            print 'TException: '.$tx->getMessage()."\n";
        }
    }
}

由此可客户端可调用服务端的方法,实现通讯:


 
postman测试thrift

注意:
1、根目录新建目录需配置composer.json中的psr-4
2、取消http/kernel.php中web中间件内容


转载:https://www.jianshu.com/p/99405b3072b1

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