我目前正在开发一个应用程序,处理时间不定,可能需要几秒钟到1个小时以上的时间。因此,在处理请求时使用通道来阻塞其他请求似乎是一个不错的选择。下面是一个我尝试实现的示例,但当我尝试将数据添加到该通道中时,我的程序好像会停顿(请参见以下内容)。
package main
import (
"net/http"
"github.com/gorilla/mux"
)
type Request struct {
Id string
}
func ConstructRequest(id string) Request {
return Request{Id: id}
}
var requestChannel chan Request // <- Create var for channel
func init() {
r := mux.NewRouter()
r.HandleFunc("/request/{id:[0-9]+}", ProcessRequest).Methods("GET")
http.Handle("/", r)
}
func main() {
// start server
http.ListenAndServe(":4000", nil)
requestChannel = make(chan Request) // <- Make channel and assign to var
go func() {
for {
request, ok := <-requestChannel
if !ok{
return
}
fmt.Println(request.Id)
}
}()
}
func ProcessRequest(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
newRequest := api.ConstructRequest(params["id"])
requestChannel <- newRequest // <- it is stopping here, not adding the value to the channel
w.Write([]byte("Received request"))
}