mirror of
https://gitee.com/rainbond/Rainbond.git
synced 2024-11-30 02:38:17 +08:00
139 lines
3.5 KiB
Go
139 lines
3.5 KiB
Go
// Copyright (C) 2014-2018 Goodrain Co., Ltd.
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// RAINBOND, Application Management Platform
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package sources
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import (
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"fmt"
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"io"
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"os"
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"path/filepath"
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"github.com/Sirupsen/logrus"
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"github.com/twinj/uuid"
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"github.com/goodrain/rainbond/util"
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"github.com/goodrain/rainbond/event"
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)
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//CopyFileWithProgress 复制文件，带进度
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func CopyFileWithProgress(src, dst string, logger event.Logger) error {
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srcFile, err := os.OpenFile(src, os.O_RDONLY, 0644)
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if err != nil {
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if logger != nil {
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logger.Error("打开源文件失败", map[string]string{"step": "share"})
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}
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logrus.Errorf("open file %s error", src)
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return err
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}
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defer srcFile.Close()
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srcStat, err := srcFile.Stat()
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if err != nil {
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if logger != nil {
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logger.Error("打开源文件失败", map[string]string{"step": "share"})
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}
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return err
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}
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// 验证并创建目标目录
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dir := filepath.Dir(dst)
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if err := util.CheckAndCreateDir(dir); err != nil {
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if logger != nil {
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logger.Error("检测并创建目标文件目录失败", map[string]string{"step": "share"})
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}
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return err
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}
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// 先删除文件如果存在
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os.RemoveAll(dst)
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dstFile, err := os.OpenFile(dst, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644)
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if err != nil {
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if logger != nil {
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logger.Error("打开目标文件失败", map[string]string{"step": "share"})
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}
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return err
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}
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defer dstFile.Close()
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allSize := srcStat.Size()
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return CopyWithProgress(srcFile, dstFile, allSize, logger)
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}
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//SrcFile 源文件
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type SrcFile interface {
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Read([]byte) (int, error)
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}
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//DstFile 目标文件
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type DstFile interface {
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Write([]byte) (int, error)
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}
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//CopyWithProgress copy file
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func CopyWithProgress(srcFile SrcFile, dstFile DstFile, allSize int64, logger event.Logger) (err error) {
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var written int64
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buf := make([]byte, 1024*1024)
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progressID := uuid.NewV4().String()[0:7]
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for {
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nr, er := srcFile.Read(buf)
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if nr > 0 {
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nw, ew := dstFile.Write(buf[0:nr])
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if nw > 0 {
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written += int64(nw)
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}
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if ew != nil {
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err = ew
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break
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}
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if nr != nw {
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err = io.ErrShortWrite
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break
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}
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}
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if er != nil {
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if er != io.EOF {
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err = er
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}
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break
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}
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if logger != nil {
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progress := "["
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i := int((float64(written) / float64(allSize)) * 50)
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if i == 0 {
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i = 1
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}
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for j := 0; j < i; j++ {
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progress += "="
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}
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progress += ">"
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for len(progress) < 50 {
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progress += " "
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}
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progress += fmt.Sprintf("] %d MB/%d MB", int(written/1024/1024), int(allSize/1024/1024))
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message := fmt.Sprintf(`{"progress":"%s","progressDetail":{"current":%d,"total":%d},"id":"%s"}`, progress, written, allSize, progressID)
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logger.Debug(message, map[string]string{"step": "progress"})
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}
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}
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if err != nil {
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return err
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}
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if written != allSize {
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return io.ErrShortWrite
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}
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return nil
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}
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