404 lines
15 KiB
Go
404 lines
15 KiB
Go
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/*
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Copyright 2016 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 deployment
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import (
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"testing"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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extensions "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
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"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
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"k8s.io/kubernetes/pkg/client/record"
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testclient "k8s.io/kubernetes/pkg/client/testing/core"
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"k8s.io/kubernetes/pkg/controller"
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deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
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"k8s.io/kubernetes/pkg/controller/informers"
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"k8s.io/kubernetes/pkg/util/intstr"
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)
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func maxSurge(val int) *intstr.IntOrString {
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surge := intstr.FromInt(val)
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return &surge
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}
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func TestScale(t *testing.T) {
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newTimestamp := metav1.Date(2016, 5, 20, 2, 0, 0, 0, time.UTC)
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oldTimestamp := metav1.Date(2016, 5, 20, 1, 0, 0, 0, time.UTC)
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olderTimestamp := metav1.Date(2016, 5, 20, 0, 0, 0, 0, time.UTC)
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var updatedTemplate = func(replicas int) *extensions.Deployment {
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d := newDeployment("foo", replicas, nil, nil, nil, map[string]string{"foo": "bar"})
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d.Spec.Template.Labels["another"] = "label"
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return d
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}
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tests := []struct {
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name string
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deployment *extensions.Deployment
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oldDeployment *extensions.Deployment
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newRS *extensions.ReplicaSet
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oldRSs []*extensions.ReplicaSet
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expectedNew *extensions.ReplicaSet
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expectedOld []*extensions.ReplicaSet
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wasntUpdated map[string]bool
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desiredReplicasAnnotations map[string]int32
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}{
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{
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name: "normal scaling event: 10 -> 12",
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deployment: newDeployment("foo", 12, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 10, nil, nil, nil, nil),
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newRS: rs("foo-v1", 10, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{},
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expectedNew: rs("foo-v1", 12, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{},
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},
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{
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name: "normal scaling event: 10 -> 5",
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deployment: newDeployment("foo", 5, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 10, nil, nil, nil, nil),
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newRS: rs("foo-v1", 10, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{},
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expectedNew: rs("foo-v1", 5, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{},
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},
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{
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name: "proportional scaling: 5 -> 10",
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deployment: newDeployment("foo", 10, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
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newRS: rs("foo-v2", 2, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v1", 3, nil, oldTimestamp)},
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expectedNew: rs("foo-v2", 4, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v1", 6, nil, oldTimestamp)},
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},
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{
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name: "proportional scaling: 5 -> 3",
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deployment: newDeployment("foo", 3, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
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newRS: rs("foo-v2", 2, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v1", 3, nil, oldTimestamp)},
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expectedNew: rs("foo-v2", 1, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v1", 2, nil, oldTimestamp)},
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},
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{
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name: "proportional scaling: 9 -> 4",
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deployment: newDeployment("foo", 4, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 9, nil, nil, nil, nil),
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newRS: rs("foo-v2", 8, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v1", 1, nil, oldTimestamp)},
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expectedNew: rs("foo-v2", 4, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v1", 0, nil, oldTimestamp)},
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},
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{
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name: "proportional scaling: 7 -> 10",
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deployment: newDeployment("foo", 10, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 7, nil, nil, nil, nil),
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newRS: rs("foo-v3", 2, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 3, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
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expectedNew: rs("foo-v3", 3, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 4, nil, oldTimestamp), rs("foo-v1", 3, nil, olderTimestamp)},
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},
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{
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name: "proportional scaling: 13 -> 8",
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deployment: newDeployment("foo", 8, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 13, nil, nil, nil, nil),
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newRS: rs("foo-v3", 2, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 8, nil, oldTimestamp), rs("foo-v1", 3, nil, olderTimestamp)},
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expectedNew: rs("foo-v3", 1, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 5, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
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},
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// Scales up the new replica set.
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{
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name: "leftover distribution: 3 -> 4",
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deployment: newDeployment("foo", 4, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 3, nil, nil, nil, nil),
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newRS: rs("foo-v3", 1, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
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expectedNew: rs("foo-v3", 2, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
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},
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// Scales down the older replica set.
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{
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name: "leftover distribution: 3 -> 2",
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deployment: newDeployment("foo", 2, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 3, nil, nil, nil, nil),
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newRS: rs("foo-v3", 1, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
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expectedNew: rs("foo-v3", 1, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
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},
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// Scales up the latest replica set first.
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{
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name: "proportional scaling (no new rs): 4 -> 5",
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deployment: newDeployment("foo", 5, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 4, nil, nil, nil, nil),
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newRS: nil,
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
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expectedNew: nil,
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 3, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
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},
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// Scales down to zero
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{
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name: "proportional scaling: 6 -> 0",
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deployment: newDeployment("foo", 0, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 6, nil, nil, nil, nil),
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newRS: rs("foo-v3", 3, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
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expectedNew: rs("foo-v3", 0, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
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},
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// Scales up from zero
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{
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name: "proportional scaling: 0 -> 6",
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deployment: newDeployment("foo", 6, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 6, nil, nil, nil, nil),
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newRS: rs("foo-v3", 0, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
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expectedNew: rs("foo-v3", 6, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
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wasntUpdated: map[string]bool{"foo-v2": true, "foo-v1": true},
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},
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// Scenario: deployment.spec.replicas == 3 ( foo-v1.spec.replicas == foo-v2.spec.replicas == foo-v3.spec.replicas == 1 )
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// Deployment is scaled to 5. foo-v3.spec.replicas and foo-v2.spec.replicas should increment by 1 but foo-v2 fails to
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// update.
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{
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name: "failed rs update",
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deployment: newDeployment("foo", 5, nil, nil, nil, nil),
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oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
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newRS: rs("foo-v3", 2, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
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expectedNew: rs("foo-v3", 2, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
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wasntUpdated: map[string]bool{"foo-v3": true, "foo-v1": true},
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desiredReplicasAnnotations: map[string]int32{"foo-v2": int32(3)},
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},
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{
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name: "deployment with surge pods",
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deployment: newDeployment("foo", 20, nil, maxSurge(2), nil, nil),
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oldDeployment: newDeployment("foo", 10, nil, maxSurge(2), nil, nil),
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newRS: rs("foo-v2", 6, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v1", 6, nil, oldTimestamp)},
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expectedNew: rs("foo-v2", 11, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v1", 11, nil, oldTimestamp)},
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},
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{
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name: "change both surge and size",
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deployment: newDeployment("foo", 50, nil, maxSurge(6), nil, nil),
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oldDeployment: newDeployment("foo", 10, nil, maxSurge(3), nil, nil),
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newRS: rs("foo-v2", 5, nil, newTimestamp),
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oldRSs: []*extensions.ReplicaSet{rs("foo-v1", 8, nil, oldTimestamp)},
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expectedNew: rs("foo-v2", 22, nil, newTimestamp),
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expectedOld: []*extensions.ReplicaSet{rs("foo-v1", 34, nil, oldTimestamp)},
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},
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{
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name: "change both size and template",
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deployment: updatedTemplate(14),
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oldDeployment: newDeployment("foo", 10, nil, nil, nil, map[string]string{"foo": "bar"}),
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newRS: nil,
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oldRSs: []*extensions.ReplicaSet{rs("foo-v2", 7, nil, newTimestamp), rs("foo-v1", 3, nil, oldTimestamp)},
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expectedNew: nil,
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expectedOld: []*extensions.ReplicaSet{rs("foo-v2", 10, nil, newTimestamp), rs("foo-v1", 4, nil, oldTimestamp)},
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},
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}
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for _, test := range tests {
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_ = olderTimestamp
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t.Log(test.name)
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fake := fake.Clientset{}
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dc := &DeploymentController{
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client: &fake,
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eventRecorder: &record.FakeRecorder{},
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}
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if test.newRS != nil {
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desiredReplicas := *(test.oldDeployment.Spec.Replicas)
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if desired, ok := test.desiredReplicasAnnotations[test.newRS.Name]; ok {
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desiredReplicas = desired
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}
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deploymentutil.SetReplicasAnnotations(test.newRS, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
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}
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for i := range test.oldRSs {
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rs := test.oldRSs[i]
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if rs == nil {
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continue
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}
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desiredReplicas := *(test.oldDeployment.Spec.Replicas)
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if desired, ok := test.desiredReplicasAnnotations[rs.Name]; ok {
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desiredReplicas = desired
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}
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deploymentutil.SetReplicasAnnotations(rs, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
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}
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if err := dc.scale(test.deployment, test.newRS, test.oldRSs); err != nil {
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t.Errorf("%s: unexpected error: %v", test.name, err)
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continue
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}
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// Construct the nameToSize map that will hold all the sizes we got our of tests
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// Skip updating the map if the replica set wasn't updated since there will be
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// no update action for it.
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nameToSize := make(map[string]int32)
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if test.newRS != nil {
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nameToSize[test.newRS.Name] = *(test.newRS.Spec.Replicas)
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}
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for i := range test.oldRSs {
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rs := test.oldRSs[i]
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nameToSize[rs.Name] = *(rs.Spec.Replicas)
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}
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// Get all the UPDATE actions and update nameToSize with all the updated sizes.
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for _, action := range fake.Actions() {
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rs := action.(testclient.UpdateAction).GetObject().(*extensions.ReplicaSet)
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if !test.wasntUpdated[rs.Name] {
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nameToSize[rs.Name] = *(rs.Spec.Replicas)
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}
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}
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if test.expectedNew != nil && test.newRS != nil && *(test.expectedNew.Spec.Replicas) != nameToSize[test.newRS.Name] {
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t.Errorf("%s: expected new replicas: %d, got: %d", test.name, *(test.expectedNew.Spec.Replicas), nameToSize[test.newRS.Name])
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continue
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}
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if len(test.expectedOld) != len(test.oldRSs) {
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t.Errorf("%s: expected %d old replica sets, got %d", test.name, len(test.expectedOld), len(test.oldRSs))
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continue
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}
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for n := range test.oldRSs {
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rs := test.oldRSs[n]
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|
|
expected := test.expectedOld[n]
|
||
|
|
if *(expected.Spec.Replicas) != nameToSize[rs.Name] {
|
||
|
|
t.Errorf("%s: expected old (%s) replicas: %d, got: %d", test.name, rs.Name, *(expected.Spec.Replicas), nameToSize[rs.Name])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestDeploymentController_cleanupDeployment(t *testing.T) {
|
||
|
|
selector := map[string]string{"foo": "bar"}
|
||
|
|
|
||
|
|
tests := []struct {
|
||
|
|
oldRSs []*extensions.ReplicaSet
|
||
|
|
revisionHistoryLimit int32
|
||
|
|
expectedDeletions int
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
oldRSs: []*extensions.ReplicaSet{
|
||
|
|
newRSWithStatus("foo-1", 0, 0, selector),
|
||
|
|
newRSWithStatus("foo-2", 0, 0, selector),
|
||
|
|
newRSWithStatus("foo-3", 0, 0, selector),
|
||
|
|
},
|
||
|
|
revisionHistoryLimit: 1,
|
||
|
|
expectedDeletions: 2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
// Only delete the replica set with Spec.Replicas = Status.Replicas = 0.
|
||
|
|
oldRSs: []*extensions.ReplicaSet{
|
||
|
|
newRSWithStatus("foo-1", 0, 0, selector),
|
||
|
|
newRSWithStatus("foo-2", 0, 1, selector),
|
||
|
|
newRSWithStatus("foo-3", 1, 0, selector),
|
||
|
|
newRSWithStatus("foo-4", 1, 1, selector),
|
||
|
|
},
|
||
|
|
revisionHistoryLimit: 0,
|
||
|
|
expectedDeletions: 1,
|
||
|
|
},
|
||
|
|
|
||
|
|
{
|
||
|
|
oldRSs: []*extensions.ReplicaSet{
|
||
|
|
newRSWithStatus("foo-1", 0, 0, selector),
|
||
|
|
newRSWithStatus("foo-2", 0, 0, selector),
|
||
|
|
},
|
||
|
|
revisionHistoryLimit: 0,
|
||
|
|
expectedDeletions: 2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
oldRSs: []*extensions.ReplicaSet{
|
||
|
|
newRSWithStatus("foo-1", 1, 1, selector),
|
||
|
|
newRSWithStatus("foo-2", 1, 1, selector),
|
||
|
|
},
|
||
|
|
revisionHistoryLimit: 0,
|
||
|
|
expectedDeletions: 0,
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i := range tests {
|
||
|
|
test := tests[i]
|
||
|
|
fake := &fake.Clientset{}
|
||
|
|
informers := informers.NewSharedInformerFactory(fake, nil, controller.NoResyncPeriodFunc())
|
||
|
|
controller := NewDeploymentController(informers.Deployments(), informers.ReplicaSets(), informers.Pods(), fake)
|
||
|
|
|
||
|
|
controller.eventRecorder = &record.FakeRecorder{}
|
||
|
|
controller.dListerSynced = alwaysReady
|
||
|
|
controller.rsListerSynced = alwaysReady
|
||
|
|
controller.podListerSynced = alwaysReady
|
||
|
|
for _, rs := range test.oldRSs {
|
||
|
|
controller.rsLister.Indexer.Add(rs)
|
||
|
|
}
|
||
|
|
|
||
|
|
stopCh := make(chan struct{})
|
||
|
|
defer close(stopCh)
|
||
|
|
informers.Start(stopCh)
|
||
|
|
|
||
|
|
d := newDeployment("foo", 1, &test.revisionHistoryLimit, nil, nil, map[string]string{"foo": "bar"})
|
||
|
|
controller.cleanupDeployment(test.oldRSs, d)
|
||
|
|
|
||
|
|
gotDeletions := 0
|
||
|
|
for _, action := range fake.Actions() {
|
||
|
|
if "delete" == action.GetVerb() {
|
||
|
|
gotDeletions++
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if gotDeletions != test.expectedDeletions {
|
||
|
|
t.Errorf("expect %v old replica sets been deleted, but got %v", test.expectedDeletions, gotDeletions)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|