mirror of
https://github.com/k3s-io/kubernetes.git
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325 lines
12 KiB
Go
325 lines
12 KiB
Go
/*
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Copyright 2017 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 v2beta2_test
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import (
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"reflect"
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"testing"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/diff"
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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"github.com/stretchr/testify/assert"
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autoscalingv2 "k8s.io/api/autoscaling/v2beta2"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/kubernetes/pkg/apis/autoscaling"
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_ "k8s.io/kubernetes/pkg/apis/autoscaling/install"
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. "k8s.io/kubernetes/pkg/apis/autoscaling/v2beta2"
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_ "k8s.io/kubernetes/pkg/apis/core/install"
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utilpointer "k8s.io/utils/pointer"
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)
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func TestGenerateScaleDownRules(t *testing.T) {
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type TestCase struct {
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rateDownPods int32
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rateDownPodsPeriodSeconds int32
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rateDownPercent int32
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rateDownPercentPeriodSeconds int32
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stabilizationSeconds *int32
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selectPolicy *autoscalingv2.ScalingPolicySelect
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expectedPolicies []autoscalingv2.HPAScalingPolicy
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expectedStabilization *int32
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expectedSelectPolicy string
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annotation string
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}
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maxPolicy := autoscalingv2.MaxPolicySelect
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minPolicy := autoscalingv2.MinPolicySelect
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tests := []TestCase{
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{
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annotation: "Default values",
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PercentScalingPolicy, Value: 100, PeriodSeconds: 15},
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},
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expectedStabilization: nil,
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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{
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annotation: "All parameters are specified",
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rateDownPods: 1,
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rateDownPodsPeriodSeconds: 2,
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rateDownPercent: 3,
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rateDownPercentPeriodSeconds: 4,
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stabilizationSeconds: utilpointer.Int32Ptr(25),
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selectPolicy: &maxPolicy,
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PodsScalingPolicy, Value: 1, PeriodSeconds: 2},
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{Type: autoscalingv2.PercentScalingPolicy, Value: 3, PeriodSeconds: 4},
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},
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expectedStabilization: utilpointer.Int32Ptr(25),
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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{
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annotation: "Percent policy is specified",
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rateDownPercent: 1,
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rateDownPercentPeriodSeconds: 2,
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selectPolicy: &minPolicy,
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PercentScalingPolicy, Value: 1, PeriodSeconds: 2},
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},
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expectedStabilization: nil,
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expectedSelectPolicy: string(autoscalingv2.MinPolicySelect),
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},
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{
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annotation: "Pods policy is specified",
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rateDownPods: 3,
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rateDownPodsPeriodSeconds: 4,
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PodsScalingPolicy, Value: 3, PeriodSeconds: 4},
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},
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expectedStabilization: nil,
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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}
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for _, tc := range tests {
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t.Run(tc.annotation, func(t *testing.T) {
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scaleDownRules := &autoscalingv2.HPAScalingRules{
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StabilizationWindowSeconds: tc.stabilizationSeconds,
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SelectPolicy: tc.selectPolicy,
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}
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if tc.rateDownPods != 0 || tc.rateDownPodsPeriodSeconds != 0 {
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scaleDownRules.Policies = append(scaleDownRules.Policies, autoscalingv2.HPAScalingPolicy{
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Type: autoscalingv2.PodsScalingPolicy, Value: tc.rateDownPods, PeriodSeconds: tc.rateDownPodsPeriodSeconds,
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})
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}
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if tc.rateDownPercent != 0 || tc.rateDownPercentPeriodSeconds != 0 {
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scaleDownRules.Policies = append(scaleDownRules.Policies, autoscalingv2.HPAScalingPolicy{
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Type: autoscalingv2.PercentScalingPolicy, Value: tc.rateDownPercent, PeriodSeconds: tc.rateDownPercentPeriodSeconds,
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})
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}
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down := GenerateHPAScaleDownRules(scaleDownRules)
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assert.EqualValues(t, tc.expectedPolicies, down.Policies)
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if tc.expectedStabilization != nil {
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assert.Equal(t, *tc.expectedStabilization, *down.StabilizationWindowSeconds)
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} else {
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assert.Equal(t, tc.expectedStabilization, down.StabilizationWindowSeconds)
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}
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assert.Equal(t, autoscalingv2.ScalingPolicySelect(tc.expectedSelectPolicy), *down.SelectPolicy)
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})
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}
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}
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func TestGenerateScaleUpRules(t *testing.T) {
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type TestCase struct {
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rateUpPods int32
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rateUpPodsPeriodSeconds int32
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rateUpPercent int32
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rateUpPercentPeriodSeconds int32
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stabilizationSeconds *int32
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selectPolicy *autoscalingv2.ScalingPolicySelect
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expectedPolicies []autoscalingv2.HPAScalingPolicy
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expectedStabilization *int32
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expectedSelectPolicy string
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annotation string
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}
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maxPolicy := autoscalingv2.MaxPolicySelect
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minPolicy := autoscalingv2.MinPolicySelect
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tests := []TestCase{
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{
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annotation: "Default values",
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PodsScalingPolicy, Value: 4, PeriodSeconds: 15},
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{Type: autoscalingv2.PercentScalingPolicy, Value: 100, PeriodSeconds: 15},
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},
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expectedStabilization: utilpointer.Int32Ptr(0),
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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{
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annotation: "All parameters are specified",
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rateUpPods: 1,
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rateUpPodsPeriodSeconds: 2,
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rateUpPercent: 3,
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rateUpPercentPeriodSeconds: 4,
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stabilizationSeconds: utilpointer.Int32Ptr(25),
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selectPolicy: &maxPolicy,
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PodsScalingPolicy, Value: 1, PeriodSeconds: 2},
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{Type: autoscalingv2.PercentScalingPolicy, Value: 3, PeriodSeconds: 4},
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},
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expectedStabilization: utilpointer.Int32Ptr(25),
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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{
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annotation: "Pod policy is specified",
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rateUpPods: 1,
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rateUpPodsPeriodSeconds: 2,
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selectPolicy: &minPolicy,
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PodsScalingPolicy, Value: 1, PeriodSeconds: 2},
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},
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expectedStabilization: utilpointer.Int32Ptr(0),
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expectedSelectPolicy: string(autoscalingv2.MinPolicySelect),
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},
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{
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annotation: "Percent policy is specified",
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rateUpPercent: 7,
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rateUpPercentPeriodSeconds: 10,
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PercentScalingPolicy, Value: 7, PeriodSeconds: 10},
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},
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expectedStabilization: utilpointer.Int32Ptr(0),
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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{
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annotation: "Pod policy and stabilization window are specified",
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rateUpPodsPeriodSeconds: 2,
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stabilizationSeconds: utilpointer.Int32Ptr(25),
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rateUpPods: 4,
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PodsScalingPolicy, Value: 4, PeriodSeconds: 2},
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},
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expectedStabilization: utilpointer.Int32Ptr(25),
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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{
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annotation: "Percent policy and stabilization window are specified",
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rateUpPercent: 7,
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rateUpPercentPeriodSeconds: 60,
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stabilizationSeconds: utilpointer.Int32Ptr(25),
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expectedPolicies: []autoscalingv2.HPAScalingPolicy{
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{Type: autoscalingv2.PercentScalingPolicy, Value: 7, PeriodSeconds: 60},
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},
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expectedStabilization: utilpointer.Int32Ptr(25),
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expectedSelectPolicy: string(autoscalingv2.MaxPolicySelect),
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},
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}
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for _, tc := range tests {
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t.Run(tc.annotation, func(t *testing.T) {
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scaleUpRules := &autoscalingv2.HPAScalingRules{
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StabilizationWindowSeconds: tc.stabilizationSeconds,
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SelectPolicy: tc.selectPolicy,
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}
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if tc.rateUpPods != 0 || tc.rateUpPodsPeriodSeconds != 0 {
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scaleUpRules.Policies = append(scaleUpRules.Policies, autoscalingv2.HPAScalingPolicy{
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Type: autoscalingv2.PodsScalingPolicy, Value: tc.rateUpPods, PeriodSeconds: tc.rateUpPodsPeriodSeconds,
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})
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}
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if tc.rateUpPercent != 0 || tc.rateUpPercentPeriodSeconds != 0 {
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scaleUpRules.Policies = append(scaleUpRules.Policies, autoscalingv2.HPAScalingPolicy{
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Type: autoscalingv2.PercentScalingPolicy, Value: tc.rateUpPercent, PeriodSeconds: tc.rateUpPercentPeriodSeconds,
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})
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}
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up := GenerateHPAScaleUpRules(scaleUpRules)
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assert.Equal(t, tc.expectedPolicies, up.Policies)
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if tc.expectedStabilization != nil {
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assert.Equal(t, *tc.expectedStabilization, *up.StabilizationWindowSeconds)
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} else {
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assert.Equal(t, tc.expectedStabilization, up.StabilizationWindowSeconds)
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}
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assert.Equal(t, autoscalingv2.ScalingPolicySelect(tc.expectedSelectPolicy), *up.SelectPolicy)
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})
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}
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}
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func TestHorizontalPodAutoscalerAnnotations(t *testing.T) {
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tests := []struct {
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hpa autoscalingv2.HorizontalPodAutoscaler
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test string
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}{
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{
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hpa: autoscalingv2.HorizontalPodAutoscaler{
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ObjectMeta: metav1.ObjectMeta{
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Annotations: map[string]string{
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autoscaling.HorizontalPodAutoscalerConditionsAnnotation: "",
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autoscaling.MetricSpecsAnnotation: "",
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autoscaling.BehaviorSpecsAnnotation: "",
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autoscaling.MetricStatusesAnnotation: "",
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},
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},
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},
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test: "test empty value for Annotations",
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},
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{
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hpa: autoscalingv2.HorizontalPodAutoscaler{
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ObjectMeta: metav1.ObjectMeta{
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Annotations: map[string]string{
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autoscaling.HorizontalPodAutoscalerConditionsAnnotation: "abc",
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autoscaling.MetricSpecsAnnotation: "abc",
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autoscaling.BehaviorSpecsAnnotation: "abc",
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autoscaling.MetricStatusesAnnotation: "abc",
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},
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},
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},
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test: "test random value for Annotations",
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},
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{
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hpa: autoscalingv2.HorizontalPodAutoscaler{
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ObjectMeta: metav1.ObjectMeta{
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Annotations: map[string]string{
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autoscaling.HorizontalPodAutoscalerConditionsAnnotation: "[]",
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autoscaling.MetricSpecsAnnotation: "[]",
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autoscaling.BehaviorSpecsAnnotation: "[]",
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autoscaling.MetricStatusesAnnotation: "[]",
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},
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},
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},
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test: "test empty array value for Annotations",
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},
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}
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for _, test := range tests {
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hpa := &test.hpa
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hpaBeforeMuatate := *hpa.DeepCopy()
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obj := roundTrip(t, runtime.Object(hpa))
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final_obj, ok := obj.(*autoscalingv2.HorizontalPodAutoscaler)
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if !ok {
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t.Fatalf("unexpected object: %v", obj)
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}
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if !reflect.DeepEqual(*hpa, hpaBeforeMuatate) {
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t.Errorf("diff: %v", diff.ObjectDiff(*hpa, hpaBeforeMuatate))
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t.Errorf("expected: %#v\n actual: %#v", *hpa, hpaBeforeMuatate)
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}
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if len(final_obj.ObjectMeta.Annotations) != 0 {
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t.Fatalf("unexpected annotations: %v", final_obj.ObjectMeta.Annotations)
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}
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}
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}
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func roundTrip(t *testing.T, obj runtime.Object) runtime.Object {
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data, err := runtime.Encode(legacyscheme.Codecs.LegacyCodec(SchemeGroupVersion), obj)
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if err != nil {
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t.Errorf("%v\n %#v", err, obj)
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return nil
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}
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obj2, err := runtime.Decode(legacyscheme.Codecs.UniversalDecoder(), data)
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if err != nil {
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t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
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return nil
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}
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obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)
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err = legacyscheme.Scheme.Convert(obj2, obj3, nil)
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if err != nil {
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t.Errorf("%v\nSource: %#v", err, obj2)
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return nil
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}
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return obj3
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}
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