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feat: partial download (#1486)

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* add .partial download

* fix Stat check

* review partial download
This commit is contained in:
l 2023-12-24 19:39:33 +01:00 committed by GitHub
parent 95eb72bfd3
commit f7621b2c6c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 32 additions and 4 deletions
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36
pkg/utils/uri.go
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@ -94,6 +94,20 @@ func ConvertURL(s string) string {
return s
}
func removePartialFile(tmpFilePath string) error {
_, err := os.Stat(tmpFilePath)
if err == nil {
log.Debug().Msgf("Removing temporary file %s", tmpFilePath)
err = os.Remove(tmpFilePath)
if err != nil {
err1 := fmt.Errorf("failed to remove temporary download file %s: %v", tmpFilePath, err)
log.Warn().Msg(err1.Error())
return err1
}
}
return nil
}
func DownloadFile(url string, filePath, sha string, downloadStatus func(string, string, string, float64)) error {
url = ConvertURL(url)
// Check if the file already exists
@ -143,15 +157,24 @@ func DownloadFile(url string, filePath, sha string, downloadStatus func(string,
return fmt.Errorf("failed to create parent directory for file %q: %v", filePath, err)
}
// Create and write file content
outFile, err := os.Create(filePath)
// save partial download to dedicated file
tmpFilePath := filePath + ".partial"
// remove tmp file
err = removePartialFile(tmpFilePath)
if err != nil {
return fmt.Errorf("failed to create file %q: %v", filePath, err)
return err
}
// Create and write file content
outFile, err := os.Create(tmpFilePath)
if err != nil {
return fmt.Errorf("failed to create file %q: %v", tmpFilePath, err)
}
defer outFile.Close()
progress := &progressWriter{
fileName: filePath,
fileName: tmpFilePath,
total: resp.ContentLength,
hash: sha256.New(),
downloadStatus: downloadStatus,
@ -161,6 +184,11 @@ func DownloadFile(url string, filePath, sha string, downloadStatus func(string,
return fmt.Errorf("failed to write file %q: %v", filePath, err)
}
err = os.Rename(tmpFilePath, filePath)
if err != nil {
return fmt.Errorf("failed to rename temporary file %s -> %s: %v", tmpFilePath, filePath, err)
}
if sha != "" {
// Verify SHA
calculatedSHA := fmt.Sprintf("%x", progress.hash.Sum(nil))