63 lines
2 KiB
Go
63 lines
2 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package class
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import (
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"k8s.io/klog"
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networking "k8s.io/api/networking/v1beta1"
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)
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const (
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// IngressKey picks a specific "class" for the Ingress.
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// The controller only processes Ingresses with this annotation either
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// unset, or set to either the configured value or the empty string.
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IngressKey = "kubernetes.io/ingress.class"
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)
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var (
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// DefaultClass defines the default class used in the nginx ingres controller
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DefaultClass = "nginx"
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// IngressClass sets the runtime ingress class to use
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// An empty string means accept all ingresses without
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// annotation and the ones configured with class nginx
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IngressClass = "nginx"
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)
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// IsValid returns true if the given Ingress either doesn't specify
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// the ingress.class annotation, or it's set to the configured in the
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// ingress controller.
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func IsValid(ing *networking.Ingress) bool {
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ingress, ok := ing.GetAnnotations()[IngressKey]
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if !ok {
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klog.V(3).Infof("annotation %v is not present in ingress %v/%v", IngressKey, ing.Namespace, ing.Name)
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}
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// we have 2 valid combinations
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// 1 - ingress with default class | blank annotation on ingress
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// 2 - ingress with specific class | same annotation on ingress
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//
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// and 2 invalid combinations
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// 3 - ingress with default class | fixed annotation on ingress
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// 4 - ingress with specific class | different annotation on ingress
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if ingress == "" && IngressClass == DefaultClass {
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return true
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}
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return ingress == IngressClass
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}
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