64 lines
2 KiB
Go
64 lines
2 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package class
|
|
|
|
import (
|
|
networking "k8s.io/api/networking/v1beta1"
|
|
"k8s.io/ingress-nginx/internal/k8s"
|
|
)
|
|
|
|
const (
|
|
// IngressKey picks a specific "class" for the Ingress.
|
|
// The controller only processes Ingresses with this annotation either
|
|
// unset, or set to either the configured value or the empty string.
|
|
IngressKey = "kubernetes.io/ingress.class"
|
|
)
|
|
|
|
var (
|
|
// DefaultClass defines the default class used in the nginx ingress controller
|
|
DefaultClass = "nginx"
|
|
|
|
// IngressClass sets the runtime ingress class to use
|
|
// An empty string means accept all ingresses without
|
|
// annotation and the ones configured with class nginx
|
|
IngressClass = "nginx"
|
|
)
|
|
|
|
// IsValid returns true if the given Ingress specify the ingress.class
|
|
// annotation or IngressClassName resource for Kubernetes >= v1.18
|
|
func IsValid(ing *networking.Ingress) bool {
|
|
// 1. with annotation or IngressClass
|
|
ingress, ok := ing.GetAnnotations()[IngressKey]
|
|
if !ok && ing.Spec.IngressClassName != nil {
|
|
ingress = *ing.Spec.IngressClassName
|
|
}
|
|
|
|
// empty ingress and IngressClass equal default
|
|
if len(ingress) == 0 && IngressClass == DefaultClass {
|
|
return true
|
|
}
|
|
|
|
// k8s > v1.18.
|
|
// Processing may be redundant because k8s.IngressClass is obtained by IngressClass
|
|
// 3. without annotation and IngressClass. Check IngressClass
|
|
if k8s.IngressClass != nil {
|
|
return ingress == k8s.IngressClass.Name
|
|
}
|
|
|
|
// 4. with IngressClass
|
|
return ingress == IngressClass
|
|
}
|