Apache Thrift是一个跨语言的服务部署框架,通过一个中间语言(IDL, 接口定义语言)来定义RPC的接口和数据类型,然后通过一个编译器生成不同语言的代码(支持C++,Java,Python,PHP, GO,Javascript,Ruby,Erlang,Perl, Haskell, C#等),并由生成的代码负责RPC协议层和传输层的实现。
现在开始编写一个简单IDL文件helloworld.thrift
namespace php Services.HelloWorld
service HelloWorld
{
string sayHello(1:string name);
}
然后通过生成器生成PHP文件
#不指明:server不生成processor。。
thrift --gen php:server HelloWorld.thrift
生成文件在gen-php目录下面的Services/HelloWord/HelloWorld.php(目录与namesapce定义一致),这是个公共文件,服务端和客户端都需要包括它。其中客户端调用的代码(HelloWorldClient )已经生成好了
目前的目录结构:
├── gen-php
│ └── Services
│ └── HelloWorld
│ ├── HelloWorld.php
│ └── Types.php
├── helloworld.thrift
//服务端需要继承该接口
interface HelloWorldIf {
/**
* @param string $name
* @return string
*/
public function sayHello($name);
}
//提供给客户端调用的方法
class HelloWorldClient implements \Services\HelloWorld\HelloWorldIf {
public function sayHello($name)
{
$this->send_sayHello($name);
return $this->recv_sayHello();
}
public function send_sayHello($name)
{
}
public function recv_sayHello()
{
}
}
//HelloWord类sayHello方法参数读取
class HelloWorld_sayHello_args {
}
//HelloWord类sayHello方法结果写入
class HelloWorld_sayHello_result {
}
//作为服务端才会生成
class HelloWorldProcessor {
}
Thrift的PHP类库在Thrift源码中https://github.com/apache/thrift.
可以将thrift/lib/php/lib/Thrift目录复制到当前目录下:
├── gen-php
│ └── Services
├── helloworld.thrift
└── Thrift
├── Base
├── ClassLoader
├── Exception
├── Factory
├── Protocol
├── Serializer
├── Server
├── StringFunc
├── Transport
└── Type
服务端的服务实现代码则需要继承HelloWorldIf 实现代码HelloWorldHandler.php
namespace Services\HelloWorld;
class HelloWorldHandler implements HelloWorldIf {
public function sayHello($name)
{
print_r($name.PHP_EOL);
return "Hello $name";
}
}
编写服务端代码Server.php
namespace Services\HelloWorld;
error_reporting(E_ALL);
define('THRIFT_ROOT', __DIR__.'/../../../');
require_once THRIFT_ROOT.'Thrift/ClassLoader/ThriftClassLoader.php';
use Thrift\ClassLoader\ThriftClassLoader;
$loader = new ThriftClassLoader();
$loader->registerNamespace('Thrift', THRIFT_ROOT);
$loader->registerDefinition('Service', THRIFT_ROOT. 'gen-php');
$loader->register();
use Thrift\Exception\TException;
use Thrift\Factory\TTransportFactory;
use Thrift\Factory\TBinaryProtocolFactory;
use Thrift\Server\TServerSocket;
use Thrift\Server\TSimpleServer;
try {
require_once 'HelloWorldHandler.php';
$handler = new \Services\HelloWorld\HelloWorldHandler();
$processor = new \Services\HelloWorld\HelloWorldProcessor($handler);
$transportFactory = new TTransportFactory();
$protocolFactory = new TBinaryProtocolFactory(true, true);
//作为cli方式运行,监听端口,官方实现
$transport = new TServerSocket('localhost', 9090);
$server = new TSimpleServer($processor, $transport, $transportFactory, $transportFactory, $protocolFactory, $protocolFactory);
$server->serve();
} catch (TException $tx) {
print 'TException: '.$tx->getMessage()."\n";
}
服务端创建的步骤:
编写客户端代码Client.php
namespace Services\HelloWorld;
error_reporting(E_ALL);
define('THRIFT_ROOT', __DIR__.'/../../../');
require_once THRIFT_ROOT.'Thrift/ClassLoader/ThriftClassLoader.php';
use Thrift\ClassLoader\ThriftClassLoader;
$loader = new ThriftClassLoader();
$loader->registerNamespace('Thrift', THRIFT_ROOT);
$loader->registerDefinition('Service', THRIFT_ROOT . 'gen-php');
$loader->register();
use Thrift\Protocol\TBinaryProtocol;
use Thrift\Transport\TSocket;
use Thrift\Transport\TBufferedTransport;
use Thrift\Exception\TException;
try {
//仅在与服务端处于同一输出输出流有用
//使用方式:php Client.php | php Server.php
//$transport = new TBufferedTransport(new TPhpStream(TPhpStream::MODE_R | TPhpStream::MODE_W));
//socket方式连接服务端
//数据传输格式和数据传输方式与服务端一一对应
//如果服务端以http方式提供服务,可以使用THttpClient/TCurlClient数据传输方式
$transport = new TBufferedTransport(new TSocket('localhost', 9090));
$protocol = new TBinaryProtocol($transport);
$client = new \Services\HelloWorld\HelloWorldClient($protocol);
$transport->open();
//同步方式进行交互
$recv = $client->sayHello('PHP');
echo "sayHello:".$recv." \n";
//异步方式进行交互
$client->send_sayHello('Thrift');
echo "send_sayHello \n";
$recv = $client->recv_sayHello();
echo "recv_sayHello:".$recv." \n";
$transport->close();
} catch (TException $tx) {
print 'TException: '.$tx->getMessage()."\n";
}
客户端调用的步骤:
将以上三个文件放在gen-php/Services/HelloWorld
目录下:
gen-php/
└── Services
└── HelloWorld
├── Client.php
├── HelloWorldHandler.php
├── HelloWorld.php
├── Server.php
└── Types.php
终端上运行:
先启动Server.php
(否则先启动Client.php
会报错)
$ cd gen-php/Services/HelloWorld
$ php Server.php
启动Client.php
$ cd gen-php/Services/HelloWorld
$ php Client.php
sayHello:Hello PHP
send_sayHello
recv_sayHello:Hello Thrift
Server的终端打印:
PHP
Thrift