正文
nginx使用ngx_lua访问后端Thrift-Server实现和介绍
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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
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
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
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.
