mirror of https://github.com/knative/pkg.git
83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
/*
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Copyright 2020 The Knative 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 webhook
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import (
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"strings"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"knative.dev/pkg/webhook/certificates/resources"
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)
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// EnsureLabelSelectorExpressions merges the current label selector's MatchExpressions
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// with the ones wanted.
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// It keeps all non-knative keys intact, removes all knative-keys no longer wanted and
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// adds all knative-keys not yet there.
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func EnsureLabelSelectorExpressions(
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current *metav1.LabelSelector,
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want *metav1.LabelSelector,
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) *metav1.LabelSelector {
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if current == nil {
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return want
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}
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if len(current.MatchExpressions) == 0 {
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return &metav1.LabelSelector{
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MatchLabels: current.MatchLabels,
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MatchExpressions: want.MatchExpressions,
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}
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}
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var wantExpressions []metav1.LabelSelectorRequirement
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if want != nil {
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wantExpressions = want.MatchExpressions
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}
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return &metav1.LabelSelector{
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MatchLabels: current.MatchLabels,
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MatchExpressions: ensureLabelSelectorRequirements(
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current.MatchExpressions, wantExpressions),
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}
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}
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func ensureLabelSelectorRequirements(
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current []metav1.LabelSelectorRequirement,
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want []metav1.LabelSelectorRequirement,
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) []metav1.LabelSelectorRequirement {
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nonKnative := make([]metav1.LabelSelectorRequirement, 0, len(current))
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for _, r := range current {
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if !strings.Contains(r.Key, "knative.dev") {
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nonKnative = append(nonKnative, r)
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}
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}
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return append(want, nonKnative...)
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}
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func getSecretDataKeyNamesOrDefault(sKey string, sCert string) (serverKey string, serverCert string) {
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serverKey = resources.ServerKey
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serverCert = resources.ServerCert
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if sKey != "" {
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serverKey = sKey
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}
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if sCert != "" {
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serverCert = sCert
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}
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return serverKey, serverCert
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}
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