Thrift的安装与使用

Thrift的安装与使用

## Thrift的安装与使用

### thrift的安装

#### 下载源代码
  到官网下载thrift源代码: [官网下载地址](http://thrift.apache.org/download).

 这里使用git克隆源代码.
  `git clone https://git-wip-us.apache.org/repos/asf/thrift.git thrift`

#### 编译安装thrift.
[教程](https://github.com/apache/thrift)
`./bootstrap.sh`
`./configure`
`make`
`make install`

#### 测试
`thrift -help` 显示thrift帮助列表

#### 编译遇到的问题

##### java maven仓库

thrift自带的maven仓库为 `http://repo1.maven.org/maven2`
在国内的下载速度基本为零,
修改 thrift目录下 /lib/java/build.properties 中的 mvn.repo 为: 
阿里的maven仓库 `http://maven.aliyun.com/nexus/content/repositories/central` 

#### ruby依赖安装问题

编译时一部分ruby依赖安装不了
`apt-get install ruby-dev`

#### 编译自定义thrift消息协议文件
`test.thrift`
```
service Calculator{
   i32 add(1:i32 num1, 2:i32 num2),
}
```

#### 服务端
`server.js`
```
var thrift = require("thrift");
var Calculator = require("./thriftMessage/Calculator");


var server = thrift.createServer(Calculator, {
    add: function(n1, n2) {
        console.log("add(", n1, ",", n2, ")");
        return n1 + n2;
    }
});

server.listen(9090);
```

#### 客户端
`client.js`

```
'use strict';
var thrift = require('thrift');
var Calculator = require('./thriftMessage/Calculator');
var co = require('co');

var transport = thrift.TBufferedTransport;
var protocol = thrift.TBinaryProtocol;

var connection = thrift.createConnection("localhost", 9090, {
    transport: transport,
    protocol: protocol
});


connection.on('error', function (err) {
    assert(false, err);
});

connection.on('connect', co.wrap(function*() {
    try {
        // Create a Calculator client with the connection
        var client = thrift.createClient(Calculator, connection);

        var addResult = yield client.add(1, 1);
        console.log("1+1=" + addResult);

    } catch (err) {
      console.log("未知错误: ", err);
    } finally {
        //close the connection once we're done
        connection && connection.end();
    }
}));
```

#### 运行
`node server.js`
`node client.js`

#### 结果 
`1+1=2`