仅了解资源种类/类型时创建空的Kubernetes资源结构（在golang中）

Question

How can I create an empty struct of a certain Kubernetes resource when the resource kind/type is given as string ?

I.e.

var object *runtime.Object

object = factory.NewResourceFromKind("pod")

and object should then contain &apiv1.Pod{} ?

Answer 1

Knowing the Kind is not enough, however a combination of API Group + API Version + object Kind (GroupVersionKind) would allow you to use the information contained in the default scheme.Scheme variable to generate a new object.

package main

import (
    "fmt"

    "k8s.io/apimachinery/pkg/runtime/schema"
    "k8s.io/client-go/kubernetes/scheme"
)

func main() {
    // apiVersion's syntax is "group/version" for non-core API groups
    // e.g. "apps/v1"
    podGvk := schema.FromAPIVersionAndKind("v1", "Pod")

    obj, err := scheme.Scheme.New(podGvk)  // error handling omitted

    fmt.Printf("%T", obj)
    /* prints '*v1.Pod' */
}

See godoc for func (*Scheme) New