Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/k8s.io/kubernetes/pkg/controller/deployment/sync_test.go

@@ -0,0 +1,435 @@
+/*
+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"
+	"time"
+
+	apps "k8s.io/api/apps/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/intstr"
+	"k8s.io/client-go/informers"
+	"k8s.io/client-go/kubernetes/fake"
+	testclient "k8s.io/client-go/testing"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/kubernetes/pkg/controller"
+	deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
+)
+
+func intOrStrP(val int) *intstr.IntOrString {
+	intOrStr := intstr.FromInt(val)
+	return &intOrStr
+}
+
+func TestScale(t *testing.T) {
+	newTimestamp := metav1.Date(2016, 5, 20, 2, 0, 0, 0, time.UTC)
+	oldTimestamp := metav1.Date(2016, 5, 20, 1, 0, 0, 0, time.UTC)
+	olderTimestamp := metav1.Date(2016, 5, 20, 0, 0, 0, 0, time.UTC)
+
+	var updatedTemplate = func(replicas int) *apps.Deployment {
+		d := newDeployment("foo", replicas, nil, nil, nil, map[string]string{"foo": "bar"})
+		d.Spec.Template.Labels["another"] = "label"
+		return d
+	}
+
+	tests := []struct {
+		name          string
+		deployment    *apps.Deployment
+		oldDeployment *apps.Deployment
+
+		newRS  *apps.ReplicaSet
+		oldRSs []*apps.ReplicaSet
+
+		expectedNew  *apps.ReplicaSet
+		expectedOld  []*apps.ReplicaSet
+		wasntUpdated map[string]bool
+
+		desiredReplicasAnnotations map[string]int32
+	}{
+		{
+			name:          "normal scaling event: 10 -> 12",
+			deployment:    newDeployment("foo", 12, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 10, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v1", 10, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{},
+
+			expectedNew: rs("foo-v1", 12, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{},
+		},
+		{
+			name:          "normal scaling event: 10 -> 5",
+			deployment:    newDeployment("foo", 5, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 10, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v1", 10, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{},
+
+			expectedNew: rs("foo-v1", 5, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{},
+		},
+		{
+			name:          "proportional scaling: 5 -> 10",
+			deployment:    newDeployment("foo", 10, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v2", 2, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v1", 3, nil, oldTimestamp)},
+
+			expectedNew: rs("foo-v2", 4, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v1", 6, nil, oldTimestamp)},
+		},
+		{
+			name:          "proportional scaling: 5 -> 3",
+			deployment:    newDeployment("foo", 3, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v2", 2, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v1", 3, nil, oldTimestamp)},
+
+			expectedNew: rs("foo-v2", 1, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v1", 2, nil, oldTimestamp)},
+		},
+		{
+			name:          "proportional scaling: 9 -> 4",
+			deployment:    newDeployment("foo", 4, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 9, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v2", 8, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v1", 1, nil, oldTimestamp)},
+
+			expectedNew: rs("foo-v2", 4, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v1", 0, nil, oldTimestamp)},
+		},
+		{
+			name:          "proportional scaling: 7 -> 10",
+			deployment:    newDeployment("foo", 10, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 7, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v3", 2, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 3, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
+
+			expectedNew: rs("foo-v3", 3, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v2", 4, nil, oldTimestamp), rs("foo-v1", 3, nil, olderTimestamp)},
+		},
+		{
+			name:          "proportional scaling: 13 -> 8",
+			deployment:    newDeployment("foo", 8, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 13, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v3", 2, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 8, nil, oldTimestamp), rs("foo-v1", 3, nil, olderTimestamp)},
+
+			expectedNew: rs("foo-v3", 1, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v2", 5, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
+		},
+		// Scales up the new replica set.
+		{
+			name:          "leftover distribution: 3 -> 4",
+			deployment:    newDeployment("foo", 4, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 3, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v3", 1, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
+
+			expectedNew: rs("foo-v3", 2, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
+		},
+		// Scales down the older replica set.
+		{
+			name:          "leftover distribution: 3 -> 2",
+			deployment:    newDeployment("foo", 2, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 3, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v3", 1, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
+
+			expectedNew: rs("foo-v3", 1, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
+		},
+		// Scales up the latest replica set first.
+		{
+			name:          "proportional scaling (no new rs): 4 -> 5",
+			deployment:    newDeployment("foo", 5, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 4, nil, nil, nil, nil),
+
+			newRS:  nil,
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
+
+			expectedNew: nil,
+			expectedOld: []*apps.ReplicaSet{rs("foo-v2", 3, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
+		},
+		// Scales down to zero
+		{
+			name:          "proportional scaling: 6 -> 0",
+			deployment:    newDeployment("foo", 0, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 6, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v3", 3, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
+
+			expectedNew: rs("foo-v3", 0, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
+		},
+		// Scales up from zero
+		{
+			name:          "proportional scaling: 0 -> 6",
+			deployment:    newDeployment("foo", 6, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 6, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v3", 0, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
+
+			expectedNew:  rs("foo-v3", 6, nil, newTimestamp),
+			expectedOld:  []*apps.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
+			wasntUpdated: map[string]bool{"foo-v2": true, "foo-v1": true},
+		},
+		// Scenario: deployment.spec.replicas == 3 ( foo-v1.spec.replicas == foo-v2.spec.replicas == foo-v3.spec.replicas == 1 )
+		// Deployment is scaled to 5. foo-v3.spec.replicas and foo-v2.spec.replicas should increment by 1 but foo-v2 fails to
+		// update.
+		{
+			name:          "failed rs update",
+			deployment:    newDeployment("foo", 5, nil, nil, nil, nil),
+			oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
+
+			newRS:  rs("foo-v3", 2, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
+
+			expectedNew:  rs("foo-v3", 2, nil, newTimestamp),
+			expectedOld:  []*apps.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
+			wasntUpdated: map[string]bool{"foo-v3": true, "foo-v1": true},
+
+			desiredReplicasAnnotations: map[string]int32{"foo-v2": int32(3)},
+		},
+		{
+			name:          "deployment with surge pods",
+			deployment:    newDeployment("foo", 20, nil, intOrStrP(2), nil, nil),
+			oldDeployment: newDeployment("foo", 10, nil, intOrStrP(2), nil, nil),
+
+			newRS:  rs("foo-v2", 6, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v1", 6, nil, oldTimestamp)},
+
+			expectedNew: rs("foo-v2", 11, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v1", 11, nil, oldTimestamp)},
+		},
+		{
+			name:          "change both surge and size",
+			deployment:    newDeployment("foo", 50, nil, intOrStrP(6), nil, nil),
+			oldDeployment: newDeployment("foo", 10, nil, intOrStrP(3), nil, nil),
+
+			newRS:  rs("foo-v2", 5, nil, newTimestamp),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v1", 8, nil, oldTimestamp)},
+
+			expectedNew: rs("foo-v2", 22, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v1", 34, nil, oldTimestamp)},
+		},
+		{
+			name:          "change both size and template",
+			deployment:    updatedTemplate(14),
+			oldDeployment: newDeployment("foo", 10, nil, nil, nil, map[string]string{"foo": "bar"}),
+
+			newRS:  nil,
+			oldRSs: []*apps.ReplicaSet{rs("foo-v2", 7, nil, newTimestamp), rs("foo-v1", 3, nil, oldTimestamp)},
+
+			expectedNew: nil,
+			expectedOld: []*apps.ReplicaSet{rs("foo-v2", 10, nil, newTimestamp), rs("foo-v1", 4, nil, oldTimestamp)},
+		},
+		{
+			name:          "saturated but broken new replica set does not affect old pods",
+			deployment:    newDeployment("foo", 2, nil, intOrStrP(1), intOrStrP(1), nil),
+			oldDeployment: newDeployment("foo", 2, nil, intOrStrP(1), intOrStrP(1), nil),
+
+			newRS: func() *apps.ReplicaSet {
+				rs := rs("foo-v2", 2, nil, newTimestamp)
+				rs.Status.AvailableReplicas = 0
+				return rs
+			}(),
+			oldRSs: []*apps.ReplicaSet{rs("foo-v1", 1, nil, oldTimestamp)},
+
+			expectedNew: rs("foo-v2", 2, nil, newTimestamp),
+			expectedOld: []*apps.ReplicaSet{rs("foo-v1", 1, nil, oldTimestamp)},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			_ = olderTimestamp
+			t.Log(test.name)
+			fake := fake.Clientset{}
+			dc := &DeploymentController{
+				client:        &fake,
+				eventRecorder: &record.FakeRecorder{},
+			}
+
+			if test.newRS != nil {
+				desiredReplicas := *(test.oldDeployment.Spec.Replicas)
+				if desired, ok := test.desiredReplicasAnnotations[test.newRS.Name]; ok {
+					desiredReplicas = desired
+				}
+				deploymentutil.SetReplicasAnnotations(test.newRS, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
+			}
+			for i := range test.oldRSs {
+				rs := test.oldRSs[i]
+				if rs == nil {
+					continue
+				}
+				desiredReplicas := *(test.oldDeployment.Spec.Replicas)
+				if desired, ok := test.desiredReplicasAnnotations[rs.Name]; ok {
+					desiredReplicas = desired
+				}
+				deploymentutil.SetReplicasAnnotations(rs, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
+			}
+
+			if err := dc.scale(test.deployment, test.newRS, test.oldRSs); err != nil {
+				t.Errorf("%s: unexpected error: %v", test.name, err)
+				return
+			}
+
+			// Construct the nameToSize map that will hold all the sizes we got our of tests
+			// Skip updating the map if the replica set wasn't updated since there will be
+			// no update action for it.
+			nameToSize := make(map[string]int32)
+			if test.newRS != nil {
+				nameToSize[test.newRS.Name] = *(test.newRS.Spec.Replicas)
+			}
+			for i := range test.oldRSs {
+				rs := test.oldRSs[i]
+				nameToSize[rs.Name] = *(rs.Spec.Replicas)
+			}
+			// Get all the UPDATE actions and update nameToSize with all the updated sizes.
+			for _, action := range fake.Actions() {
+				rs := action.(testclient.UpdateAction).GetObject().(*apps.ReplicaSet)
+				if !test.wasntUpdated[rs.Name] {
+					nameToSize[rs.Name] = *(rs.Spec.Replicas)
+				}
+			}
+
+			if test.expectedNew != nil && test.newRS != nil && *(test.expectedNew.Spec.Replicas) != nameToSize[test.newRS.Name] {
+				t.Errorf("%s: expected new replicas: %d, got: %d", test.name, *(test.expectedNew.Spec.Replicas), nameToSize[test.newRS.Name])
+				return
+			}
+			if len(test.expectedOld) != len(test.oldRSs) {
+				t.Errorf("%s: expected %d old replica sets, got %d", test.name, len(test.expectedOld), len(test.oldRSs))
+				return
+			}
+			for n := range test.oldRSs {
+				rs := test.oldRSs[n]
+				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"}
+	alreadyDeleted := newRSWithStatus("foo-1", 0, 0, selector)
+	now := metav1.Now()
+	alreadyDeleted.DeletionTimestamp = &now
+
+	tests := []struct {
+		oldRSs               []*apps.ReplicaSet
+		revisionHistoryLimit int32
+		expectedDeletions    int
+	}{
+		{
+			oldRSs: []*apps.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: []*apps.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: []*apps.ReplicaSet{
+				newRSWithStatus("foo-1", 0, 0, selector),
+				newRSWithStatus("foo-2", 0, 0, selector),
+			},
+			revisionHistoryLimit: 0,
+			expectedDeletions:    2,
+		},
+		{
+			oldRSs: []*apps.ReplicaSet{
+				newRSWithStatus("foo-1", 1, 1, selector),
+				newRSWithStatus("foo-2", 1, 1, selector),
+			},
+			revisionHistoryLimit: 0,
+			expectedDeletions:    0,
+		},
+		{
+			oldRSs: []*apps.ReplicaSet{
+				alreadyDeleted,
+			},
+			revisionHistoryLimit: 0,
+			expectedDeletions:    0,
+		},
+	}
+
+	for i := range tests {
+		test := tests[i]
+		t.Logf("scenario %d", i)
+
+		fake := &fake.Clientset{}
+		informers := informers.NewSharedInformerFactory(fake, controller.NoResyncPeriodFunc())
+		controller, err := NewDeploymentController(informers.Apps().V1().Deployments(), informers.Apps().V1().ReplicaSets(), informers.Core().V1().Pods(), fake)
+		if err != nil {
+			t.Fatalf("error creating Deployment controller: %v", err)
+		}
+
+		controller.eventRecorder = &record.FakeRecorder{}
+		controller.dListerSynced = alwaysReady
+		controller.rsListerSynced = alwaysReady
+		controller.podListerSynced = alwaysReady
+		for _, rs := range test.oldRSs {
+			informers.Apps().V1().ReplicaSets().Informer().GetIndexer().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
+		}
+	}
+}