func (s *CustomColumnsPrinter) PrintObj(obj runtime.Object, out io.Writer) error {
w := tabwriter.NewWriter(out, columnwidth, tabwidth, padding, padding_character, flags)
headers := make([]string, len(s.Columns))
for ix := range s.Columns {
headers[ix] = s.Columns[ix].Header
}
fmt.Fprintln(w, strings.Join(headers, "\t"))
parsers := make([]*jsonpath.JSONPath, len(s.Columns))
for ix := range s.Columns {
parsers[ix] = jsonpath.New(fmt.Sprintf("column%d", ix))
if err := parsers[ix].Parse(s.Columns[ix].FieldSpec); err != nil {
return err
}
}
if meta.IsListType(obj) {
objs, err := meta.ExtractList(obj)
if err != nil {
return err
}
for ix := range objs {
if err := s.printOneObject(objs[ix], parsers, w); err != nil {
return err
}
}
} else {
if err := s.printOneObject(obj, parsers, w); err != nil {
return err
}
}
return w.Flush()
}
// setListSelfLink sets the self link of a list to the base URL, then sets the self links
// on all child objects returned. Returns the number of items in the list.
func setListSelfLink(obj runtime.Object, req *restful.Request, namer ScopeNamer) (int, error) {
if !meta.IsListType(obj) {
return 0, nil
}
// TODO: List SelfLink generation should return a full URL?
path, query, err := namer.GenerateListLink(req)
if err != nil {
return 0, err
}
newURL := *req.Request.URL
newURL.Path = path
newURL.RawQuery = query
// use the path that got us here
newURL.Fragment = ""
if err := namer.SetSelfLink(obj, newURL.String()); err != nil {
glog.V(4).Infof("Unable to set self link on object: %v", err)
}
// Set self-link of objects in the list.
items, err := meta.ExtractList(obj)
if err != nil {
return 0, err
}
for i := range items {
if err := setSelfLink(items[i], req, namer); err != nil {
return len(items), err
}
}
return len(items), meta.SetList(obj, items)
}
func (s *SortingPrinter) PrintObj(obj runtime.Object, out io.Writer) error {
if !meta.IsListType(obj) {
return s.Delegate.PrintObj(obj, out)
}
if err := s.sortObj(obj); err != nil {
return err
}
return s.Delegate.PrintObj(obj, out)
}