mirror of https://github.com/panjf2000/ants.git
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
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package main
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import (
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"io/ioutil"
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"net/http"
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"github.com/panjf2000/ants"
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)
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type Request struct {
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Param []byte
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Result chan []byte
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}
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func main() {
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pool, _ := ants.NewPoolWithFunc(100, func(payload interface{}) {
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request, ok := payload.(Request)
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if !ok {
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request = Request{Result: make(chan []byte)}
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}
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reverseParam := func(s []byte) []byte {
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for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
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s[i], s[j] = s[j], s[i]
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}
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return s
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}(request.Param)
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request.Result <- reverseParam
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})
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defer pool.Release()
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http.HandleFunc("/reverse", func(w http.ResponseWriter, r *http.Request) {
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param, err := ioutil.ReadAll(r.Body)
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if err != nil {
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http.Error(w, "request error", http.StatusInternalServerError)
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}
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defer r.Body.Close()
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request := Request{Param: param, Result: make(chan []byte)}
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// Throttle the requests with ants pool. This process is asynchronous and
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// you can receive a result from the channel defined outside.
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if err := pool.Serve(request); err != nil {
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http.Error(w, "throttle limit error", http.StatusInternalServerError)
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}
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w.Write(<-request.Result)
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})
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http.ListenAndServe(":8080", nil)
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}
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