golang结合lua进行http业务扩展

源代码可以通过git clone https://git.oschina.net/cxwshawn/ornet.git 获取;

1、golang对c提供的接口在sandbox.go中:

func GetURIPath(ptr unsafe.Pointer) *C.char 
func ReadBodyData(ptr unsafe.Pointer) (body *C.char, n int)
func WriteData(ptr unsafe.Pointer, data *C.char, n C.int) C.int

2、c对lua提供的接口在sandbox.h中:

int get_uri_path(lua_State *L);
int read_body_data(lua_State *L);
int write_data(lua_State *L);

3、c对golang提供的接口在sandbox.h中:

void *init_lua();
int load_lua_file(void *p_luaCtx, const char *p_pszFilename);
int process_request(void *p_luaCtx, void *p_reqCtx);
void uninit(void *p_luaCtx);

4、lua实现http业务示例:

function process_request(reqCtx)
  local uri_path = go.get_uri_path(reqCtx)
  print(uri_path)
  local count = go.write(reqCtx, uri_path)
  if count ~= string.len(uri_path) then
    print("write count is", count, "length of uri_path is", string.len(uri_path))
  end
end

在lua中可以通过go包访问c接口,通过get_uri_path获取uri path,通过uri path区分业务类型,通过go.read_body_data获取请求的包体,通过go.write返回客户端数据;

5、配置文件示例:

[ngxfmd]

error_log = true

access_log=true

fastcgi_listen_addr = ":11000"

http_listen_addr = ":11001"

[sandbox]

lua_filename = "/root/myopensrc/ornet/anyd/src/service/sandbox/examples/test.lua"

通过以上方式就可以在test.lua文件中实现http业务;

6、请求示例:

curl -v http://localhost:11001/sandbox/test

后续会继续更新该开源项目,以更方便的使用lua扩展业务;

本文来自:开源中国博客

感谢作者:shawn chen

查看原文:golang结合lua进行http业务扩展

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