// CloneAndCheckoutSources clones the remote repository using either regular
// git clone operation or shallow git clone, based on the "ref" provided (you
// cannot shallow clone using the 'ref').
// This function will return the full path to the buildable sources, including
// the context directory if specified.
func CloneAndCheckoutSources(repo git.Repository, remote, ref, localDir, contextDir string) (string, error) {
if len(ref) == 0 {
glog.V(5).Infof("No source ref specified, using shallow git clone")
if err := repo.CloneWithOptions(localDir, remote, git.Shallow, "--recursive"); err != nil {
return "", fmt.Errorf("shallow cloning repository %q to %q failed: %v", remote, localDir, err)
}
} else {
glog.V(5).Infof("Requested ref %q, performing full git clone and git checkout", ref)
if err := repo.Clone(localDir, remote); err != nil {
return "", fmt.Errorf("cloning repository %q to %q failed: %v", remote, localDir, err)
}
}
if len(ref) > 0 {
if err := repo.Checkout(localDir, ref); err != nil {
return "", fmt.Errorf("unable to checkout ref %q in %q repository: %v", ref, remote, err)
}
}
if len(contextDir) > 0 {
glog.V(5).Infof("Using context directory %q. The full source path is %q", contextDir, filepath.Join(localDir, contextDir))
}
return filepath.Join(localDir, contextDir), nil
}
