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package debos
import (
"fmt"
"io"
"log"
"net/http"
"os"
)
// Function for downloading single file object with http(s) protocol
func DownloadHTTPURL(url, filename string) error {
log.Printf("Download started: '%s' -> '%s'\n", url, filename)
// TODO: Proxy support?
// Check if file object already exists.
fi, err := os.Stat(filename)
if !os.IsNotExist(err) && !fi.Mode().IsRegular() {
return fmt.Errorf("failed to download '%s': '%s' exists and it is not a regular file", url, filename)
}
resp, err := http.Get(url)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("url '%s' returned status code %d (%s)", url, resp.StatusCode, http.StatusText(resp.StatusCode))
}
// Output file
output, err := os.Create(filename)
if err != nil {
return err
}
defer output.Close()
if _, err := io.Copy(output, resp.Body); err != nil {
return err
}
return nil
}
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