// probe calls the supplied vcs function to probe a variety of url constructions.
// If vcs returns non nil, it is assumed that the url is not a valid repo.
func probe(vcs func(*url.URL) error, url *url.URL, insecure bool, schemes ...string) (string, error) {
var unsuccessful []string
for _, scheme := range schemes {
// make copy of url and apply scheme
url := *url
url.Scheme = scheme
switch url.Scheme {
case "https", "ssh":
if err := vcs(&url); err == nil {
return url.String(), nil
}
case "http", "git":
if !insecure {
gb.Infof("skipping insecure protocol: %s", url.String())
continue
}
if err := vcs(&url); err == nil {
return url.String(), nil
}
default:
return "", fmt.Errorf("unsupported scheme: %v", url.Scheme)
}
unsuccessful = append(unsuccessful, url.String())
}
return "", fmt.Errorf("vcs probe failed, tried: %s", strings.Join(unsuccessful, ","))
}
func fetchMetadata(scheme, path string, insecure bool) (io.ReadCloser, error) {
url := fmt.Sprintf("%s://%s?go-get=1", scheme, path)
switch scheme {
case "https":
resp, err := http.Get(url)
if err == nil {
return resp.Body, nil
}
case "http":
if !insecure {
gb.Infof("skipping insecure protocol: %v", url)
} else {
resp, err := http.Get(url)
if err == nil {
return resp.Body, nil
}
}
}
return nil, fmt.Errorf("unknown remote protocol scheme: %q", scheme)
}
func fetch(ctx *gb.Context, path string, recurse bool) error {
m, err := vendor.ReadManifest(manifestFile(ctx))
if err != nil {
return fmt.Errorf("could not load manifest: %v", err)
}
repo, extra, err := vendor.DeduceRemoteRepo(path, insecure)
if err != nil {
return err
}
// strip of any scheme portion from the path, it is already
// encoded in the repo.
path = stripscheme(path)
if m.HasImportpath(path) {
return fmt.Errorf("%s is already vendored", path)
}
var wc vendor.WorkingCopy
// if we are not recursing, then always fetch the HEAD of the master
if recurse {
wc, err = repo.Checkout(branch, tag, revision)
} else {
wc, err = repo.Checkout("", "", "")
}
if err != nil {
return err
}
rev, err := wc.Revision()
if err != nil {
return err
}
branch, err := wc.Branch()
if err != nil {
return err
}
dep := vendor.Dependency{
Importpath: path,
Repository: repo.URL(),
Revision: rev,
Branch: branch,
Path: extra,
}
if err := m.AddDependency(dep); err != nil {
return err
}
dst := filepath.Join(ctx.Projectdir(), "vendor", "src", dep.Importpath)
src := filepath.Join(wc.Dir(), dep.Path)
if err := vendor.Copypath(dst, src); err != nil {
return err
}
if err := vendor.WriteManifest(manifestFile(ctx), m); err != nil {
return err
}
if err := wc.Destroy(); err != nil {
return err
}
if !recurse {
return nil
}
for done := false; !done; {
paths := []struct {
Root, Prefix string
}{
{filepath.Join(runtime.GOROOT(), "src"), ""},
{filepath.Join(ctx.Projectdir(), "src"), ""},
}
m, err := vendor.ReadManifest(manifestFile(ctx))
if err != nil {
return err
}
for _, d := range m.Dependencies {
paths = append(paths, struct{ Root, Prefix string }{filepath.Join(ctx.Projectdir(), "vendor", "src", filepath.FromSlash(d.Importpath)), filepath.FromSlash(d.Importpath)})
}
dsm, err := vendor.LoadPaths(paths...)
if err != nil {
return err
}
is, ok := dsm[filepath.Join(ctx.Projectdir(), "vendor", "src", path)]
if !ok {
return fmt.Errorf("unable to locate depset for %q", path)
}
missing := findMissing(pkgs(is.Pkgs), dsm)
switch len(missing) {
case 0:
done = true
default:
// sort keys in ascending order, so the shortest missing import path
// with be fetched first.
keys := keys(missing)
sort.Strings(keys)
pkg := keys[0]
gb.Infof("fetching recursive dependency %s", pkg)
if err := fetch(ctx, pkg, false); err != nil {
return err
}
}
}
return nil
}