references.go

package reference

import (
	"fmt"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/types"
	"sigs.k8s.io/gateway-api/apis/v1alpha2"
)

var (
	DefaultParentKind = metav1.GroupKind{
		Group: "gateway.networking.k8s.io",
		Kind:  "Gateway",
	}

	DefaultSecretKind = metav1.GroupKind{
		Group: "",
		Kind:  "Secret",
	}

	DefaultBackendObjectKind = metav1.GroupKind{
		Group: "",
		Kind:  "Service",
	}
)

type Ref interface {
	Name() string
	Namespace() string
	Kind() metav1.GroupKind
}

type localRef struct {
	ref *v1alpha2.LocalObjectReference
}

func (l *localRef) Name() string {
	return string(l.ref.Name)
}

func (l *localRef) Namespace() string {
	return ""
}

func (l *localRef) Kind() metav1.GroupKind {
	return metav1.GroupKind{Group: string(l.ref.Group), Kind: string(l.ref.Kind)}
}

func Local(ref *v1alpha2.LocalObjectReference) Ref {
	return &localRef{ref}
}

type parentRef struct {
	ref *v1alpha2.ParentRef
}

func (p *parentRef) Name() string {
	return string(p.ref.Name)
}

func (p *parentRef) Namespace() string {
	return ""
}

func (p *parentRef) Kind() metav1.GroupKind {
	k := metav1.GroupKind{
		Group: "gateway.networking.k8s.io",
		Kind:  "Gateway",
	}

	if p.ref.Group != nil {
		k.Group = string(*p.ref.Group)
	}

	if p.ref.Kind != nil {
		k.Kind = string(*p.ref.Kind)
	}

	return k
}

func Parent(ref *v1alpha2.ParentRef) Ref {
	return &parentRef{ref}
}