380 lines
11 KiB
Go
380 lines
11 KiB
Go
|
/*
|
||
|
|
Copyright 2016 The Kubernetes Authors.
|
||
|
|
|
||
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
you may not use this file except in compliance with the License.
|
||
|
|
You may obtain a copy of the License at
|
||
|
|
|
||
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
|
||
|
|
Unless required by applicable law or agreed to in writing, software
|
||
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
See the License for the specific language governing permissions and
|
||
|
|
limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package deployment
|
||
|
|
|
||
|
|
import (
|
||
|
|
"testing"
|
||
|
|
|
||
|
|
extensions "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
|
||
|
|
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
|
||
|
|
"k8s.io/kubernetes/pkg/client/record"
|
||
|
|
"k8s.io/kubernetes/pkg/client/testing/core"
|
||
|
|
"k8s.io/kubernetes/pkg/util/intstr"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestDeploymentController_reconcileNewReplicaSet(t *testing.T) {
|
||
|
|
tests := []struct {
|
||
|
|
deploymentReplicas int
|
||
|
|
maxSurge intstr.IntOrString
|
||
|
|
oldReplicas int
|
||
|
|
newReplicas int
|
||
|
|
scaleExpected bool
|
||
|
|
expectedNewReplicas int
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
// Should not scale up.
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxSurge: intstr.FromInt(0),
|
||
|
|
oldReplicas: 10,
|
||
|
|
newReplicas: 0,
|
||
|
|
scaleExpected: false,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxSurge: intstr.FromInt(2),
|
||
|
|
oldReplicas: 10,
|
||
|
|
newReplicas: 0,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedNewReplicas: 2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxSurge: intstr.FromInt(2),
|
||
|
|
oldReplicas: 5,
|
||
|
|
newReplicas: 0,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedNewReplicas: 7,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxSurge: intstr.FromInt(2),
|
||
|
|
oldReplicas: 10,
|
||
|
|
newReplicas: 2,
|
||
|
|
scaleExpected: false,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
// Should scale down.
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxSurge: intstr.FromInt(2),
|
||
|
|
oldReplicas: 2,
|
||
|
|
newReplicas: 11,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedNewReplicas: 10,
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i := range tests {
|
||
|
|
test := tests[i]
|
||
|
|
t.Logf("executing scenario %d", i)
|
||
|
|
newRS := rs("foo-v2", test.newReplicas, nil, noTimestamp)
|
||
|
|
oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
|
||
|
|
allRSs := []*extensions.ReplicaSet{newRS, oldRS}
|
||
|
|
maxUnavailable := intstr.FromInt(0)
|
||
|
|
deployment := newDeployment("foo", test.deploymentReplicas, nil, &test.maxSurge, &maxUnavailable, map[string]string{"foo": "bar"})
|
||
|
|
fake := fake.Clientset{}
|
||
|
|
controller := &DeploymentController{
|
||
|
|
client: &fake,
|
||
|
|
eventRecorder: &record.FakeRecorder{},
|
||
|
|
}
|
||
|
|
scaled, err := controller.reconcileNewReplicaSet(allRSs, newRS, deployment)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("unexpected error: %v", err)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if !test.scaleExpected {
|
||
|
|
if scaled || len(fake.Actions()) > 0 {
|
||
|
|
t.Errorf("unexpected scaling: %v", fake.Actions())
|
||
|
|
}
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if test.scaleExpected && !scaled {
|
||
|
|
t.Errorf("expected scaling to occur")
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if len(fake.Actions()) != 1 {
|
||
|
|
t.Errorf("expected 1 action during scale, got: %v", fake.Actions())
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
updated := fake.Actions()[0].(core.UpdateAction).GetObject().(*extensions.ReplicaSet)
|
||
|
|
if e, a := test.expectedNewReplicas, int(*(updated.Spec.Replicas)); e != a {
|
||
|
|
t.Errorf("expected update to %d replicas, got %d", e, a)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestDeploymentController_reconcileOldReplicaSets(t *testing.T) {
|
||
|
|
tests := []struct {
|
||
|
|
deploymentReplicas int
|
||
|
|
maxUnavailable intstr.IntOrString
|
||
|
|
oldReplicas int
|
||
|
|
newReplicas int
|
||
|
|
readyPodsFromOldRS int
|
||
|
|
readyPodsFromNewRS int
|
||
|
|
scaleExpected bool
|
||
|
|
expectedOldReplicas int
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(0),
|
||
|
|
oldReplicas: 10,
|
||
|
|
newReplicas: 0,
|
||
|
|
readyPodsFromOldRS: 10,
|
||
|
|
readyPodsFromNewRS: 0,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedOldReplicas: 9,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
oldReplicas: 10,
|
||
|
|
newReplicas: 0,
|
||
|
|
readyPodsFromOldRS: 10,
|
||
|
|
readyPodsFromNewRS: 0,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedOldReplicas: 8,
|
||
|
|
},
|
||
|
|
{ // expect unhealthy replicas from old replica sets been cleaned up
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
oldReplicas: 10,
|
||
|
|
newReplicas: 0,
|
||
|
|
readyPodsFromOldRS: 8,
|
||
|
|
readyPodsFromNewRS: 0,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedOldReplicas: 8,
|
||
|
|
},
|
||
|
|
{ // expect 1 unhealthy replica from old replica sets been cleaned up, and 1 ready pod been scaled down
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
oldReplicas: 10,
|
||
|
|
newReplicas: 0,
|
||
|
|
readyPodsFromOldRS: 9,
|
||
|
|
readyPodsFromNewRS: 0,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedOldReplicas: 8,
|
||
|
|
},
|
||
|
|
{ // the unavailable pods from the newRS would not make us scale down old RSs in a further step
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
oldReplicas: 8,
|
||
|
|
newReplicas: 2,
|
||
|
|
readyPodsFromOldRS: 8,
|
||
|
|
readyPodsFromNewRS: 0,
|
||
|
|
scaleExpected: false,
|
||
|
|
},
|
||
|
|
}
|
||
|
|
for i := range tests {
|
||
|
|
test := tests[i]
|
||
|
|
t.Logf("executing scenario %d", i)
|
||
|
|
|
||
|
|
newSelector := map[string]string{"foo": "new"}
|
||
|
|
oldSelector := map[string]string{"foo": "old"}
|
||
|
|
newRS := rs("foo-new", test.newReplicas, newSelector, noTimestamp)
|
||
|
|
newRS.Status.AvailableReplicas = int32(test.readyPodsFromNewRS)
|
||
|
|
oldRS := rs("foo-old", test.oldReplicas, oldSelector, noTimestamp)
|
||
|
|
oldRS.Status.AvailableReplicas = int32(test.readyPodsFromOldRS)
|
||
|
|
oldRSs := []*extensions.ReplicaSet{oldRS}
|
||
|
|
allRSs := []*extensions.ReplicaSet{oldRS, newRS}
|
||
|
|
maxSurge := intstr.FromInt(0)
|
||
|
|
deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, newSelector)
|
||
|
|
fakeClientset := fake.Clientset{}
|
||
|
|
controller := &DeploymentController{
|
||
|
|
client: &fakeClientset,
|
||
|
|
eventRecorder: &record.FakeRecorder{},
|
||
|
|
}
|
||
|
|
|
||
|
|
scaled, err := controller.reconcileOldReplicaSets(allRSs, oldRSs, newRS, deployment)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("unexpected error: %v", err)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if !test.scaleExpected && scaled {
|
||
|
|
t.Errorf("unexpected scaling: %v", fakeClientset.Actions())
|
||
|
|
}
|
||
|
|
if test.scaleExpected && !scaled {
|
||
|
|
t.Errorf("expected scaling to occur")
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestDeploymentController_cleanupUnhealthyReplicas(t *testing.T) {
|
||
|
|
tests := []struct {
|
||
|
|
oldReplicas int
|
||
|
|
readyPods int
|
||
|
|
unHealthyPods int
|
||
|
|
maxCleanupCount int
|
||
|
|
cleanupCountExpected int
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
oldReplicas: 10,
|
||
|
|
readyPods: 8,
|
||
|
|
unHealthyPods: 2,
|
||
|
|
maxCleanupCount: 1,
|
||
|
|
cleanupCountExpected: 1,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
oldReplicas: 10,
|
||
|
|
readyPods: 8,
|
||
|
|
unHealthyPods: 2,
|
||
|
|
maxCleanupCount: 3,
|
||
|
|
cleanupCountExpected: 2,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
oldReplicas: 10,
|
||
|
|
readyPods: 8,
|
||
|
|
unHealthyPods: 2,
|
||
|
|
maxCleanupCount: 0,
|
||
|
|
cleanupCountExpected: 0,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
oldReplicas: 10,
|
||
|
|
readyPods: 10,
|
||
|
|
unHealthyPods: 0,
|
||
|
|
maxCleanupCount: 3,
|
||
|
|
cleanupCountExpected: 0,
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i, test := range tests {
|
||
|
|
t.Logf("executing scenario %d", i)
|
||
|
|
oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
|
||
|
|
oldRS.Status.AvailableReplicas = int32(test.readyPods)
|
||
|
|
oldRSs := []*extensions.ReplicaSet{oldRS}
|
||
|
|
maxSurge := intstr.FromInt(2)
|
||
|
|
maxUnavailable := intstr.FromInt(2)
|
||
|
|
deployment := newDeployment("foo", 10, nil, &maxSurge, &maxUnavailable, nil)
|
||
|
|
fakeClientset := fake.Clientset{}
|
||
|
|
|
||
|
|
controller := &DeploymentController{
|
||
|
|
client: &fakeClientset,
|
||
|
|
eventRecorder: &record.FakeRecorder{},
|
||
|
|
}
|
||
|
|
_, cleanupCount, err := controller.cleanupUnhealthyReplicas(oldRSs, deployment, int32(test.maxCleanupCount))
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("unexpected error: %v", err)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if int(cleanupCount) != test.cleanupCountExpected {
|
||
|
|
t.Errorf("expected %v unhealthy replicas been cleaned up, got %v", test.cleanupCountExpected, cleanupCount)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestDeploymentController_scaleDownOldReplicaSetsForRollingUpdate(t *testing.T) {
|
||
|
|
tests := []struct {
|
||
|
|
deploymentReplicas int
|
||
|
|
maxUnavailable intstr.IntOrString
|
||
|
|
readyPods int
|
||
|
|
oldReplicas int
|
||
|
|
scaleExpected bool
|
||
|
|
expectedOldReplicas int
|
||
|
|
}{
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(0),
|
||
|
|
readyPods: 10,
|
||
|
|
oldReplicas: 10,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedOldReplicas: 9,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
readyPods: 10,
|
||
|
|
oldReplicas: 10,
|
||
|
|
scaleExpected: true,
|
||
|
|
expectedOldReplicas: 8,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
readyPods: 8,
|
||
|
|
oldReplicas: 10,
|
||
|
|
scaleExpected: false,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
readyPods: 10,
|
||
|
|
oldReplicas: 0,
|
||
|
|
scaleExpected: false,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
deploymentReplicas: 10,
|
||
|
|
maxUnavailable: intstr.FromInt(2),
|
||
|
|
readyPods: 1,
|
||
|
|
oldReplicas: 10,
|
||
|
|
scaleExpected: false,
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i := range tests {
|
||
|
|
test := tests[i]
|
||
|
|
t.Logf("executing scenario %d", i)
|
||
|
|
oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
|
||
|
|
oldRS.Status.AvailableReplicas = int32(test.readyPods)
|
||
|
|
allRSs := []*extensions.ReplicaSet{oldRS}
|
||
|
|
oldRSs := []*extensions.ReplicaSet{oldRS}
|
||
|
|
maxSurge := intstr.FromInt(0)
|
||
|
|
deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, map[string]string{"foo": "bar"})
|
||
|
|
fakeClientset := fake.Clientset{}
|
||
|
|
controller := &DeploymentController{
|
||
|
|
client: &fakeClientset,
|
||
|
|
eventRecorder: &record.FakeRecorder{},
|
||
|
|
}
|
||
|
|
scaled, err := controller.scaleDownOldReplicaSetsForRollingUpdate(allRSs, oldRSs, deployment)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("unexpected error: %v", err)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if !test.scaleExpected {
|
||
|
|
if scaled != 0 {
|
||
|
|
t.Errorf("unexpected scaling: %v", fakeClientset.Actions())
|
||
|
|
}
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if test.scaleExpected && scaled == 0 {
|
||
|
|
t.Errorf("expected scaling to occur; actions: %v", fakeClientset.Actions())
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
// There are both list and update actions logged, so extract the update
|
||
|
|
// action for verification.
|
||
|
|
var updateAction core.UpdateAction
|
||
|
|
for _, action := range fakeClientset.Actions() {
|
||
|
|
switch a := action.(type) {
|
||
|
|
case core.UpdateAction:
|
||
|
|
if updateAction != nil {
|
||
|
|
t.Errorf("expected only 1 update action; had %v and found %v", updateAction, a)
|
||
|
|
} else {
|
||
|
|
updateAction = a
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if updateAction == nil {
|
||
|
|
t.Errorf("expected an update action")
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
updated := updateAction.GetObject().(*extensions.ReplicaSet)
|
||
|
|
if e, a := test.expectedOldReplicas, int(*(updated.Spec.Replicas)); e != a {
|
||
|
|
t.Errorf("expected update to %d replicas, got %d", e, a)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|