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Take the following approach: On a fresh install, all bootstrap configuration objects will have auto update enabled via the following annotation : `apf.kubernetes.io/autoupdate: 'true'` The kube-apiserver periodically checks the bootstrap configuration objects on the cluster and applies update if necessary. We enforce an 'always auto-update' policy for the mandatory configuration object(s). We update the suggested configuration objects when: - auto update is enabled (`apf.kubernetes.io/autoupdate: 'true'`) or - auto update annotation key is missing but `generation` is `1` If the configuration object is missing the annotation key, we add it appropriately: it is set to `true` if `generation` is `1`, `false` otherwise. The above approach ensures that we don't squash changes made by an operator. Please note, we can't protect the changes made by the operator in the following scenario: - the user changes the spec and then deletes and recreates the same object. (generation resets to 1) remove using a marker
92 lines
2.7 KiB
Go
92 lines
2.7 KiB
Go
/*
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Copyright 2019 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 rest
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import (
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"context"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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flowcontrolv1beta1 "k8s.io/api/flowcontrol/v1beta1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apiserver/pkg/apis/flowcontrol/bootstrap"
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"k8s.io/client-go/kubernetes/fake"
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)
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func TestShouldEnsurePredefinedSettings(t *testing.T) {
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testCases := []struct {
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name string
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existingPriorityLevel *flowcontrolv1beta1.PriorityLevelConfiguration
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expected bool
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}{
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{
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name: "should ensure if exempt priority-level is absent",
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existingPriorityLevel: nil,
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expected: true,
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},
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{
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name: "should not ensure if exempt priority-level is present",
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existingPriorityLevel: bootstrap.MandatoryPriorityLevelConfigurationExempt,
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expected: false,
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},
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}
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for _, testCase := range testCases {
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t.Run(testCase.name, func(t *testing.T) {
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c := fake.NewSimpleClientset()
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if testCase.existingPriorityLevel != nil {
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c.FlowcontrolV1beta1().PriorityLevelConfigurations().Create(context.TODO(), testCase.existingPriorityLevel, metav1.CreateOptions{})
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}
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should, err := shouldCreateSuggested(c.FlowcontrolV1beta1())
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assert.NoError(t, err)
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assert.Equal(t, testCase.expected, should)
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})
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}
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}
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func TestContextFromChannelAndMaxWaitDurationWithChannelClosed(t *testing.T) {
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stopCh := make(chan struct{})
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ctx, cancel := contextFromChannelAndMaxWaitDuration(stopCh, time.Hour)
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defer cancel()
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select {
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case <-ctx.Done():
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t.Fatalf("Expected the derived context to be not cancelled, but got: %v", ctx.Err())
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default:
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}
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close(stopCh)
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<-ctx.Done()
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if ctx.Err() != context.Canceled {
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t.Errorf("Expected the context to be canceled with: %v, but got: %v", context.Canceled, ctx.Err())
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}
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}
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func TestContextFromChannelAndMaxWaitDurationWithMaxWaitElapsed(t *testing.T) {
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stopCh := make(chan struct{})
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ctx, cancel := contextFromChannelAndMaxWaitDuration(stopCh, 100*time.Millisecond)
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defer cancel()
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<-ctx.Done()
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if ctx.Err() != context.Canceled {
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t.Errorf("Expected the context to be canceled with: %v, but got: %v", context.Canceled, ctx.Err())
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}
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}
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