"Golang" HTTP request code

This is a creation in Article, where the information may have evolved or changed.

One. HTTP request, setting timeout

Func Request (method, BaseUrl, path string, body io. Reader) ([]byte, int, error) {client: = http. Client{transport: &http. Transport{dial:func (NETW, addr string) (net. Conn, error) {deadline: = time. Now (). ADD (* time. Second) C, err: = Net. Dialtimeout (NETW, addr, time. SECOND*20) If err! = Nil {return nil, err}c.setdeadline (deadline) return C, Nil},},}url: = Fmt. Sprintf ("%s%s", BaseUrl, Path) req, err: = http. Newrequest (method, URL, body) if err! = Nil {return nil, 0, Err}req. Header.set ("Content-type", "Application/json") resp, err: = client. Do (req) if err! = Nil {return nil, 0, err}data, err: = Ioutil. ReadAll (resp. Body) If err! = Nil {return nil, 0, Err}defer resp. Body.close () return data, resp. StatusCode, nil}

Two. Goroutine Timer

var exit = make (chan error) TC: = time. Newticker (time. Second * 5) go func () {for {select {case &LT;-TC. C:exit <-FMT. Errorf ("{Request agent Timeout}") return Default:data, code, err = R Equest ("GET", httphost, Path, bytes. Newbuffer (nil)) if err! = Nil {exit <-FMT. Errorf ("{Request agent Error%v}", err) return} if Co De! = http. Statusok {exit <-FMT. Errorf ("{Request Agent Network abnormal}") Break} Exi T <-nil Return}}} () Err = <-exit if ER R! = Nil {return ret_error, FMT. Errorf ("{Request Agent failed finally%v}", err)}

Three. Registering API Handler

<span style= "FONT-SIZE:14PX;" >func startapiserver (Engine *driver. Engine) Error {router: = API. Handlerrouter (engine) HTTP. Handle ("/", router) Addr: = Fmt. Sprintf (":%d", engine.) Config.httpport) If Err: = http. Listenandserve (addr, nil); Err! = Nil {return Err}return nil}</span>

var mRouter = Map[string]map[string]func (*driver. Engine, http. Responsewriter, *http.                          Request) {"GET": {"Db/queryuserinfo/{user_name}": Getuserinfobynamehandler, "{user_id}/db/querylist": Getuserhagroupshandler, "{user_id}/db/detail/{group_id}": Gethagroupinfohandler, "db/ Monitor/alivestatus ": Getalivestatushandler," db/monitor/agentalivestatus/{start_id}/{end_id} ": ge Tagentalivestatushandler, "Db/monitor/keystatus/{monitor_key}/{key_value}": Getmonitkeystatushandler, "{user_id}/ Db/check/{group_name} ": Checkgroupnamehandler,}," POST ": {" {user_id}/db/create ": creat          Ehagrouphandler, "{user_id}/db/start/{group_id}": Starthagrouphandler, "{user_id}/db/restart/{group_id}":           Restarthagrouphandler, "{user_id}/db/stop/{group_id}": Stophagrouphandler, "{user_id}/db/modify/{group_id}": Modifyhagroupinfohandler, "{User_id}/db/modify/cpuandmem/{group_ID} ": modifyhagroupcpumemhandler,//" {user_id}/db/callback/create/{group_id} ": agentcreatehghandler,//" {user_id}/ DB/CALLBACK/DELETE/{GROUP_ID} ": Agentdeletehghandler,}," delete ": {" {user_id}/db/delete/{group_id} ": Deletehagrouphandler,},}func Handlerrouter (Engine *driver. Engine) http. Handler {router: = Mux. Newrouter () for method, routes: = Range MRouter {for route, FCT: = Range routes {localroute: = rversion + Routelocalmethod : = Methodhandler: = Handlerrequest (engine, FCT) router. Path (Localroute). Methods (Localmethod). Handlerfunc (handler)}}router. Notfoundhandler = http. Notfoundhandler () return Router}func handlerrequest (engine *driver. Engine, Handlerfunc func (*driver. Engine, http. Responsewriter, *http. Request)) func (HTTP. Responsewriter, *http. Request) {return func (w http. Responsewriter, R *http. Request) {engine. Log.info ("Server API handrequest:%s", R.url) Handlerfunc (engine, W, R)}}

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