Golang Heroku Web应用程序AWS S3

Question

我正在尝试将基于CLI的golang程序修改为使用Heroku（GUI）的程序。我想从AWS S3读取文件并在process（）和getdomains（）函数中使用它。需要有关S3存储桶连接和读取文件的帮助来代替“domains.txt”

Go程序代码段中的一些函数：

  package main

    import (
        "bufio"
        "bytes"
        "crypto/tls"
        "fmt"
        "io/ioutil"
        "log"
        "math/rand"
        "net"
        "net/http"
        "os"
        "strings"
        "sync"
        "time"
    )


    var Wordlist string = ""
    var int Threads, Timeout
    var Https, Strict bool = false, false

    type Http struct {
        Url, Num string
    }

  func getDomains(path string) (lines []string, Error error) {

    file, err := os.Open(path)
    if err != nil {
        log.Fatalln(err)
    }

    defer file.Close()

    scanner := bufio.NewScanner(file)

    for scanner.Scan() {
        lines = append(lines, scanner.Text())
    }

    return lines, scanner.Err()
}

func Process() {


        urls := make(chan *Http, Threads*10) // parameters threads taken as input from html form
        list, err := getDomains("file name taken from html form")
        if err != nil {
            log.Fatalln(err)
        }

        var wg sync.WaitGroup
        for i := 0; i < Threads; i++ {
            wg.Add(1)
            go func() {
                for url := range urls {
                    url.DNS()
                }

                wg.Done()
            }()
        }

        for i := 0; i < len(list); i++ {
            Progress := fmt.Sprintf("%d", len(list))
            urls <- &Http{Url: list[i], Num: Progress}
        }

        close(urls)

        wg.Wait()

        fmt.Printf("\r%s", strings.Repeat(" ", 100))
        fmt.Printf("\rTask completed.\n")
    }

谢谢！