iSharkFly-Docs
/
packer-cn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix bug where ReadAll on the stderr pipe was causing an infinite hang because there was no stderr to report

This commit is contained in:
Megan Marsh 2019-06-28 16:23:28 -07:00
parent 9e5b12cbf3
commit 8d5ecb9514
1 changed files with 7 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
builder/docker/communicator.go
View File

@ -246,18 +246,16 @@ func (c *Communicator) Download(src string, dst io.Writer) error {
// enables it to work with directories. We don't actually support
// directories in Download() but we still need to handle the tar format.
stderrOut, err := ioutil.ReadAll(stderrP)
if err != nil {
return err
}
if string(stderrOut) != "" {
return fmt.Errorf("Error downloading file: %s", string(stderrOut))
}
archive := tar.NewReader(pipe)
_, err = archive.Next()
if err != nil {
// see if we can get a useful error message from stderr, since stdout
// is messed up.
if stderrOut, err := ioutil.ReadAll(stderrP); err == nil {
if string(stderrOut) != "" {
return fmt.Errorf("Error downloading file: %s", string(stderrOut))
}
}
return fmt.Errorf("Failed to read header from tar stream: %s", err)
}