package main

import (
    "fmt"
    "io"
    "log"
    "net/http"
)

const (
    MethodPurge = "PURGE"
)

// PurgeHandler handles PURGE request to broadcast it to all varnish instances.
func PurgeHandler(w http.ResponseWriter, r *http.Request) {
    client := &http.Client{}

    // Retrieve URL sent and send an HTTP PURGE request to all varnish servers.
    url := r.URL.String()
    req, err := http.NewRequest(MethodPurge, "http://10.13.32.1:6081" + url, nil)
    resp, err := client.Do(req)
    fmt.Printf("Error: %v\n", err)
    fmt.Printf("Resp: %v\n", resp)
    io.WriteString(w, resp.Status)
}

func main() {
    http.HandleFunc("/", PurgeHandler)
    log.Fatal(http.ListenAndServe(":6081",nil))
}