nginx使用ngx_lua访问后端Thrift-Server实现和介绍

时间：2021-05-09 22:45:26

背景

随着openresty的出现，让nginx使用lua解决一些业务的能力大幅度提高，ngx_lua可以使用nginx自生的基于事件驱动的IO模型，和后端的存储，业务等系统实现非阻塞的连接交互。

如何使用ngx_lua连接后端的Thrift-Server呢？

基于这个需求，本人为ngx_lua做了一下增强。

增强后的业务架构图

nginx使用ngx_lua访问后端Thrift-Server实现和介绍

前端使用http对外提供服务，将请求的数据调用ngx_lua逻辑，使用定义好的Thrift的IDL文件生成lua代码，调用Thrift的服务，实现业务逻辑。

开源实现github：https://github.com/gityf/ngx_lua_thrift

支持的协议protocol

Support protocol: binary,compact and JSON.
binary: TBinaryProtocol.lua
compact: TCompactProtocol.lua
JSON: TJsonProtocol.lua

Support transport: RawSocket,Buffered,Framed and Http.

支持的socket

使用nginx的tcp实现socket通信 socket: ngx.socket.tcp()

安装步骤

下载 https://openresty.org/download/openresty-x.y.z.a.tar.gz .

install openresty.

To copy all files in lualib to directory openresty/lualib/

To cpoy all conf file to directory openresty/nginx/conf/

compile source in directory openresty/lualib/libthrift/c

Start openresty nginx server.

Nginx的配置

　　

       location = /v1/lua_thrift{

            access_log logs/access.log main;

            add_header 'Content-Type' 'text/html';

            content_by_lua '

                local cln = require "test_cln"

                ngx.say(cln.demoFunc());

            ';

        }

　

ngx_lua的thrift客户端代码

function _M.demoFunc()

    local socket = TSocket:new{

        host='127.0.0.1',

        port=8090

    }

    --local protocol = TBinaryProtocol:new{

    -- local protocol = TCompactProtocol:new{

        --trans = socket

    --}

    local protocol = TJSONProtocolFactory:getProtocol(socket)

    --local protocol = TCompactProtocolFactory:getProtocol(socket)

    client = RpcServiceClient:new{

        protocol = protocol

    }

    local argStruct = ArgStruct:new{

      argByte = 53,

      argString = "str 测试字符串\"\t\n\r\'\b\fvalue",

      argI16 = 54,

      argI32 = 12.3,

      argI64 = 43.32,

      argDouble = 11.22,

      argBool = true

    }

    -- Open the socket

    socket:open()

    pmap = {}

    pmap.name = "namess"

    pmap.pass = "vpass"

    pistrmap = {}

    pistrmap[10] = "val10"

    pistrmap[20] = "val20"

    ret = client:funCall(argStruct, 53, 54, 12, 34, 11.22, "login", pmap,

        pistrmap,

        {"ele1", "ele2", "ele3"},

        {11,22,33},

        {"l1.","l2."}, false);

    res = ""

    for k,v in pairs(ret)

    do

        print(k, v)

        res = res .. k .."." .. v .. "<br>"

    end

    return res

end

简单的demo测试

To access web url http://127.0.0.1:8000/v1/lua_thrift and get result.

      1.return 1 by FunCall.

      2.return 2 by FunCall.

代码实现：

https://github.com/gityf/ngx_lua_thrift

参考

https://github.com/apache/thrift/tree/master/lib/lua

http://openresty.org/

Done.

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