66 lines
1.5 KiB
Go
66 lines
1.5 KiB
Go
package main
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import (
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"fmt"
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"io"
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"log"
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"net/http"
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"os"
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"strings"
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)
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const (
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MethodPurge = "PURGE"
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)
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var (
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varnishList = MakeVarnishList()
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)
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// MakeVarnishList reads the list of varnish servers from a file on disk.
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func MakeVarnishList() []string {
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Data, err := os.ReadFile("./varnish")
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if err != nil {
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log.Fatal(err)
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}
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sliceData := strings.Split(string(Data), ",")
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return sliceData
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}
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// PurgeHandler handles PURGE request to broadcast it to all varnish instances.
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func PurgeHandler(w http.ResponseWriter, r *http.Request) {
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var resp http.Response
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// Retrieve URL sent and send an HTTP PURGE request to all varnish servers.
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url := r.URL.String()
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SendToVarnish(url)
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io.WriteString(w, resp.Status)
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}
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func SendToVarnish(url string) int {
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var status int
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var respListStatus []string
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for i := 0; i < len(varnishList); i++ {
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client := &http.Client{}
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domain := strings.Trim(varnishList[i], "\r\n")
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req, err := http.NewRequest(MethodPurge, domain + url, nil)
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//fmt.Printf("Request: %v",req)
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if err != nil {
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log.Fatal("NewRquest: %s", err)
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}
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resp, err := client.Do(req)
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if err != nil {
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log.Fatal("Client.do: %s", err)
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}
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fmt.Printf("Resp: %v\n", resp)
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respListStatus = append(respListStatus, resp.Status)
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}
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fmt.Println(respListStatus)
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return status
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}
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func main() {
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http.HandleFunc("/", PurgeHandler)
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log.Fatal(http.ListenAndServe(":6081",nil))
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}
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