Golang使用FastDFS系统

使用Ubuntu系统部署FastDFS系统，参见：

https://www.cnblogs.com/Leo_wl/p/6731647.html

如果编译安装过程中有报错，可用以下办法解决：

下载最新版nginx： wget -c https://nginx.org/download/nginx-1.12.1.tar.gz

下载最新版fastdfs-nginx-module: wget https://github.com/happyfish100/fastdfs-nginx-module/archive/V1.20.tar.gz

下载最新版libfastcommon: wget https://github.com/happyfish100/libfastcommon/archive/V1.0.39.tar.gz

目前go语言没有发布使用api，可参看：

git clone https://github.com/tedcy/fdfs_client

测试程序如下：

package main

import (
	"fdfs_client"
	"fmt"
	"sync"
)

func TestUpload() {
	client, err := fdfs_client.NewClientWithConfig("fdfs.conf")
	defer client.Destory()
	if err != nil {
		fmt.Println("NewClientWithConfig", err.Error())
		return
	}
	fileId, err := client.UploadByFilename("ddd.txt")
	if err != nil {
		fmt.Println("UploadByFilename", err.Error())
		return
	}
	fmt.Println("fileId:", fileId)
	if err := client.DownloadToFile(fileId, "tempFile", 0, 0); err != nil {
		fmt.Println("UploadByFilename:", err.Error())
		return
	}
	if buffer, err := client.DownloadToBuffer(fileId, 0, 0); err != nil {
		fmt.Println("DownloadToBuffer:", err.Error())
	} else {
		fmt.Println("DownloadToBuffer:", string(buffer))
	}
	
	if err := client.DeleteFile(fileId); err != nil {
		fmt.Println("DeleteFile", err.Error())
		return
	}
}

func TestUploadFile100() {
	client, err := fdfs_client.NewClientWithConfig("fdfs.conf")
	defer client.Destory()
	if err != nil {
		fmt.Println(err.Error())
		return
	}
	var wg sync.WaitGroup
	for i := 0; i != 100; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			for j := 0; j != 10; j++ {
				if fileId, err := client.UploadByFilename("ddd.txt"); err != nil {
					fmt.Println(err.Error())
				} else {
					fmt.Println(fileId)

					if _, err := client.DownloadToBuffer(fileId, 0, 0); err != nil {
						fmt.Println(err.Error())
					}
					if err := client.DeleteFile(fileId); err != nil {
						fmt.Println(err.Error())
					}
				}
			}
		}()
	}
	wg.Wait()
}

func TestUploadBuffer100() {
	client, err := fdfs_client.NewClientWithConfig("fdfs.conf")
	defer client.Destory()
	if err != nil {
		fmt.Println(err.Error())
		return
	}
	var wg sync.WaitGroup
	for i := 0; i != 1; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			for j := 0; j != 1; j++ {
				if fileId, err := client.UploadByBuffer([]byte("hello world"), "go"); err != nil {
					fmt.Println(err.Error())
				} else {
					fmt.Println(fileId)

					if _, err := client.DownloadToBuffer(fileId, 0, 0); err != nil {
						fmt.Println(err.Error())
					}
					//if err := client.DeleteFile(fileId); err != nil {
					//	fmt.Println(err.Error())
					// }
				}
			}
		}()
	}
	wg.Wait()
}



func main() {
	//TestUpload()
	//TestUploadFile100()
	TestUploadBuffer100()
}