Go语言中如何处理并发文件分片上传问题？

package main

import (
    "fmt"
    "io/ioutil"
    "net/http"
    "os"
)

type UploadTask struct {
    ChunkData []byte
    FileName  string
    Position  int
}

func main() {
    // 模拟文件切片
    filePath := "example.txt"
    chunkSize := 1024 * 1024 // 1MB
    chunks := readChunks(filePath, chunkSize)

    // 创建任务队列
    taskQueue := make(chan UploadTask, len(chunks))

    // 创建goroutine进行并发上传
    numWorkers := 5
    for i := 0; i < numWorkers; i++ {
        go worker(taskQueue)
    }

    // 将任务加入到任务队列
    for i, chunk := range chunks {
        task := UploadTask{
            ChunkData: chunk,
            FileName:  filePath,
            Position:  i,
        }
        taskQueue <- task
    }

    // 关闭任务队列
    close(taskQueue)

    // 等待所有goroutine完成上传
    for i := 0; i < numWorkers; i++ {
        <-taskQueue
    }

    fmt.Println("文件上传完成")
}

func worker(taskQueue chan UploadTask) {
    client := &http.Client{}
    for task := range taskQueue {
        // 执行上传任务
        uploadChunk(client, task.FileName, task.Position, task.ChunkData)
        fmt.Println("上传完成：", task.Position)
    }
}

func uploadChunk(client *http.Client, fileName string, position int, chunk []byte) {
    // TODO: 实现上传逻辑
}

func readChunks(filePath string, chunkSize int) [][]byte {
    file, err := os.Open(filePath)
    if err != nil {
        fmt.Println("打开文件失败：", err)
        return nil
    }
    defer file.Close()

    fileInfo, err := file.Stat()
    if err != nil {
        fmt.Println("获取文件信息失败：", err)
        return nil
    }

    fileSize := fileInfo.Size()

    var chunks [][]byte
    for i := 0; i < int(fileSize); i += chunkSize {
        end := i + chunkSize
        if end > int(fileSize) {
            end = int(fileSize)
        }

        chunk := make([]byte, end-i)
        file.Read(chunk)

        chunks = append(chunks, chunk)
    }

    return chunks
}