Hi
i have some issues when i try to download a larger zip file (5GB) via the
sftp package in go.
about 20% of the time it runs through smoothly but the other 80% i get a
panic with
"fatal error: concurrent map writes writing to file" or "fatal error:
concurrent map read and map write".
this is the code for the download function:
func DownloadZip(sc sftp.Client, remoteFile, localFile string) (err error) {
fmt.Fprintf(os.Stdout, "Downloading [%s] to [%s] ...\n", remoteFile,
localFile)
srcFile, err := sc.OpenFile(remoteFile, (os.O_RDONLY))
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to open remote file: %v\n", err)
return
}
defer srcFile.Close()
fmt.Println("Create locale file")
dstFile, err := os.Create(localFile)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to open local file: %v\n", err)
return
}
defer dstFile.Close()
fmt.Println("Copy remote file")
bytes, err := io.Copy(dstFile, srcFile)
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to download remote file: %v\n", err)
os.Exit(1)
}
fmt.Println("Save local file")
fmt.Fprintf(os.Stdout, "%d bytes copied\n", bytes)
return
}
If anybody has some ideas i would be very happy. thx
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