// ResourceFromArgs expects two arguments with a given type, and extracts the fields necessary
// to uniquely locate a resource. Displays a usageError if that contract is not satisfied, or
// a generic error if any other problems occur.
func ResourceOrTypeFromArgs(cmd *cobra.Command, args []string, mapper meta.RESTMapper) (mapping *meta.RESTMapping, namespace, name string) {
if len(args) == 0 || len(args) > 2 {
usageError(cmd, "Must provide resource or a resource and name as command line params")
}
resource := kubectl.ExpandResourceShortcut(args[0])
if len(resource) == 0 {
usageError(cmd, "Must provide resource or a resource and name as command line params")
}
namespace = getKubeNamespace(cmd)
if len(args) == 2 {
name = args[1]
if len(name) == 0 {
usageError(cmd, "Must provide resource or a resource and name as command line params")
}
}
version, kind, err := mapper.VersionAndKindForResource(resource)
checkErr(err)
mapping, err = mapper.RESTMapping(version, kind)
checkErr(err)
return
}
// ResourceFromArgsOrFile expects two arguments or a valid file with a given type, and extracts
// the fields necessary to uniquely locate a resource. Displays a usageError if that contract is
// not satisfied, or a generic error if any other problems occur.
func ResourceFromArgsOrFile(cmd *cobra.Command, args []string, filename string, typer runtime.ObjectTyper, mapper meta.RESTMapper) (mapping *meta.RESTMapping, namespace, name string) {
// If command line args are passed in, use those preferentially.
if len(args) > 0 && len(args) != 2 {
usageError(cmd, "If passing in command line parameters, must be resource and name")
}
if len(args) == 2 {
resource := kubectl.ExpandResourceShortcut(args[0])
namespace = getKubeNamespace(cmd)
name = args[1]
if len(name) == 0 || len(resource) == 0 {
usageError(cmd, "Must specify filename or command line params")
}
version, kind, err := mapper.VersionAndKindForResource(resource)
checkErr(err)
mapping, err = mapper.RESTMapping(version, kind)
checkErr(err)
return
}
if len(filename) == 0 {
usageError(cmd, "Must specify filename or command line params")
}
mapping, namespace, name, _ = ResourceFromFile(filename, typer, mapper)
if len(name) == 0 {
checkErr(fmt.Errorf("The resource in the provided file has no name (or ID) defined"))
}
return
}