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Generalize kubectl rollout StatusViewer interface

pull/8/head
Tomas Nozicka 2018-08-24 12:22:26 +02:00
parent 1cfeede6d5
commit f2a6fd394a
2 changed files with 60 additions and 24 deletions
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47
pkg/kubectl/rollout_status.go
View File

@ -21,17 +21,18 @@ import (
appsv1 "k8s.io/api/apps/v1"
extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/kubernetes"
clientappsv1 "k8s.io/client-go/kubernetes/typed/apps/v1"
"k8s.io/kubernetes/pkg/apis/apps"
"k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/pkg/kubectl/scheme"
)
// StatusViewer provides an interface for resources that have rollout status.
type StatusViewer interface {
Status(namespace, name string, revision int64) (string, bool, error)
Status(obj runtime.Unstructured, revision int64) (string, bool, error)
}
// StatusViewerFor returns a StatusViewer for the resource specified by kind.
@ -63,11 +64,13 @@ type StatefulSetStatusViewer struct {
}
// Status returns a message describing deployment status, and a bool value indicating if the status is considered done.
func (s *DeploymentStatusViewer) Status(namespace, name string, revision int64) (string, bool, error) {
deployment, err := s.c.Deployments(namespace).Get(name, metav1.GetOptions{})
func (s *DeploymentStatusViewer) Status(obj runtime.Unstructured, revision int64) (string, bool, error) {
deployment := &appsv1.Deployment{}
err := scheme.Scheme.Convert(obj, deployment, nil)
if err != nil {
return "", false, err
return "", false, fmt.Errorf("failed to convert %T to %T: %v", obj, deployment, err)
}
if revision > 0 {
deploymentRev, err := util.Revision(deployment)
if err != nil {
@ -80,51 +83,55 @@ func (s *DeploymentStatusViewer) Status(namespace, name string, revision int64)
if deployment.Generation <= deployment.Status.ObservedGeneration {
cond := util.GetDeploymentCondition(deployment.Status, appsv1.DeploymentProgressing)
if cond != nil && cond.Reason == util.TimedOutReason {
return "", false, fmt.Errorf("deployment %q exceeded its progress deadline", name)
return "", false, fmt.Errorf("deployment %q exceeded its progress deadline", deployment.Name)
}
if deployment.Spec.Replicas != nil && deployment.Status.UpdatedReplicas < *deployment.Spec.Replicas {
return fmt.Sprintf("Waiting for deployment %q rollout to finish: %d out of %d new replicas have been updated...\n", name, deployment.Status.UpdatedReplicas, *deployment.Spec.Replicas), false, nil
return fmt.Sprintf("Waiting for deployment %q rollout to finish: %d out of %d new replicas have been updated...\n", deployment.Name, deployment.Status.UpdatedReplicas, *deployment.Spec.Replicas), false, nil
}
if deployment.Status.Replicas > deployment.Status.UpdatedReplicas {
return fmt.Sprintf("Waiting for deployment %q rollout to finish: %d old replicas are pending termination...\n", name, deployment.Status.Replicas-deployment.Status.UpdatedReplicas), false, nil
return fmt.Sprintf("Waiting for deployment %q rollout to finish: %d old replicas are pending termination...\n", deployment.Name, deployment.Status.Replicas-deployment.Status.UpdatedReplicas), false, nil
}
if deployment.Status.AvailableReplicas < deployment.Status.UpdatedReplicas {
return fmt.Sprintf("Waiting for deployment %q rollout to finish: %d of %d updated replicas are available...\n", name, deployment.Status.AvailableReplicas, deployment.Status.UpdatedReplicas), false, nil
return fmt.Sprintf("Waiting for deployment %q rollout to finish: %d of %d updated replicas are available...\n", deployment.Name, deployment.Status.AvailableReplicas, deployment.Status.UpdatedReplicas), false, nil
}
return fmt.Sprintf("deployment %q successfully rolled out\n", name), true, nil
return fmt.Sprintf("deployment %q successfully rolled out\n", deployment.Name), true, nil
}
return fmt.Sprintf("Waiting for deployment spec update to be observed...\n"), false, nil
}
// Status returns a message describing daemon set status, and a bool value indicating if the status is considered done.
func (s *DaemonSetStatusViewer) Status(namespace, name string, revision int64) (string, bool, error) {
func (s *DaemonSetStatusViewer) Status(obj runtime.Unstructured, revision int64) (string, bool, error) {
//ignoring revision as DaemonSets does not have history yet
daemon, err := s.c.DaemonSets(namespace).Get(name, metav1.GetOptions{})
daemon := &appsv1.DaemonSet{}
err := scheme.Scheme.Convert(obj, daemon, nil)
if err != nil {
return "", false, err
return "", false, fmt.Errorf("failed to convert %T to %T: %v", obj, daemon, err)
}
if daemon.Spec.UpdateStrategy.Type != appsv1.RollingUpdateDaemonSetStrategyType {
return "", true, fmt.Errorf("rollout status is only available for %s strategy type", appsv1.RollingUpdateStatefulSetStrategyType)
}
if daemon.Generation <= daemon.Status.ObservedGeneration {
if daemon.Status.UpdatedNumberScheduled < daemon.Status.DesiredNumberScheduled {
return fmt.Sprintf("Waiting for daemon set %q rollout to finish: %d out of %d new pods have been updated...\n", name, daemon.Status.UpdatedNumberScheduled, daemon.Status.DesiredNumberScheduled), false, nil
return fmt.Sprintf("Waiting for daemon set %q rollout to finish: %d out of %d new pods have been updated...\n", daemon.Name, daemon.Status.UpdatedNumberScheduled, daemon.Status.DesiredNumberScheduled), false, nil
}
if daemon.Status.NumberAvailable < daemon.Status.DesiredNumberScheduled {
return fmt.Sprintf("Waiting for daemon set %q rollout to finish: %d of %d updated pods are available...\n", name, daemon.Status.NumberAvailable, daemon.Status.DesiredNumberScheduled), false, nil
return fmt.Sprintf("Waiting for daemon set %q rollout to finish: %d of %d updated pods are available...\n", daemon.Name, daemon.Status.NumberAvailable, daemon.Status.DesiredNumberScheduled), false, nil
}
return fmt.Sprintf("daemon set %q successfully rolled out\n", name), true, nil
return fmt.Sprintf("daemon set %q successfully rolled out\n", daemon.Name), true, nil
}
return fmt.Sprintf("Waiting for daemon set spec update to be observed...\n"), false, nil
}
// Status returns a message describing statefulset status, and a bool value indicating if the status is considered done.
func (s *StatefulSetStatusViewer) Status(namespace, name string, revision int64) (string, bool, error) {
sts, err := s.c.StatefulSets(namespace).Get(name, metav1.GetOptions{})
func (s *StatefulSetStatusViewer) Status(obj runtime.Unstructured, revision int64) (string, bool, error) {
sts := &appsv1.StatefulSet{}
err := scheme.Scheme.Convert(obj, sts, nil)
if err != nil {
return "", false, err
return "", false, fmt.Errorf("failed to convert %T to %T: %v", obj, sts, err)
}
if sts.Spec.UpdateStrategy.Type != appsv1.RollingUpdateStatefulSetStrategyType {
return "", true, fmt.Errorf("rollout status is only available for %s strategy type", appsv1.RollingUpdateStatefulSetStrategyType)
}
@ -138,7 +145,7 @@ func (s *StatefulSetStatusViewer) Status(namespace, name string, revision int64)
if sts.Spec.Replicas != nil && sts.Spec.UpdateStrategy.RollingUpdate.Partition != nil {
if sts.Status.UpdatedReplicas < (*sts.Spec.Replicas - *sts.Spec.UpdateStrategy.RollingUpdate.Partition) {
return fmt.Sprintf("Waiting for partitioned roll out to finish: %d out of %d new pods have been updated...\n",
sts.Status.UpdatedReplicas, (*sts.Spec.Replicas - *sts.Spec.UpdateStrategy.RollingUpdate.Partition)), false, nil
sts.Status.UpdatedReplicas, *sts.Spec.Replicas-*sts.Spec.UpdateStrategy.RollingUpdate.Partition), false, nil
}
}
return fmt.Sprintf("partitioned roll out complete: %d new pods have been updated...\n",

37
pkg/kubectl/rollout_status_test.go
View File

@ -23,7 +23,9 @@ import (
apps "k8s.io/api/apps/v1"
api "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/client-go/kubernetes/fake"
"k8s.io/kubernetes/pkg/kubectl/scheme"
)
func TestDeploymentStatusViewerStatus(t *testing.T) {
@ -126,9 +128,15 @@ func TestDeploymentStatusViewerStatus(t *testing.T) {
},
Status: test.status,
}
unstructuredD := &unstructured.Unstructured{}
err := scheme.Scheme.Convert(d, unstructuredD, nil)
if err != nil {
t.Fatal(err)
}
client := fake.NewSimpleClientset(d).Apps()
dsv := &DeploymentStatusViewer{c: client}
msg, done, err := dsv.Status("bar", "foo", 0)
msg, done, err := dsv.Status(unstructuredD, 0)
if err != nil {
t.Fatalf("DeploymentStatusViewer.Status(): %v", err)
}
@ -225,9 +233,16 @@ func TestDaemonSetStatusViewerStatus(t *testing.T) {
},
Status: test.status,
}
unstructuredD := &unstructured.Unstructured{}
err := scheme.Scheme.Convert(d, unstructuredD, nil)
if err != nil {
t.Fatal(err)
}
client := fake.NewSimpleClientset(d).Apps()
dsv := &DaemonSetStatusViewer{c: client}
msg, done, err := dsv.Status("bar", "foo", 0)
msg, done, err := dsv.Status(unstructuredD, 0)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
@ -370,9 +385,16 @@ func TestStatefulSetStatusViewerStatus(t *testing.T) {
s.Status = test.status
s.Spec.UpdateStrategy = test.strategy
s.Generation = test.generation
unstructuredS := &unstructured.Unstructured{}
err := scheme.Scheme.Convert(s, unstructuredS, nil)
if err != nil {
t.Fatal(err)
}
client := fake.NewSimpleClientset(s).AppsV1()
dsv := &StatefulSetStatusViewer{c: client}
msg, done, err := dsv.Status(s.Namespace, s.Name, 0)
msg, done, err := dsv.Status(unstructuredS, 0)
if test.err && err == nil {
t.Fatalf("%s: expected error", test.name)
}
@ -402,9 +424,16 @@ func TestDaemonSetStatusViewerStatusWithWrongUpdateStrategyType(t *testing.T) {
},
},
}
unstructuredD := &unstructured.Unstructured{}
err := scheme.Scheme.Convert(d, unstructuredD, nil)
if err != nil {
t.Fatal(err)
}
client := fake.NewSimpleClientset(d).Apps()
dsv := &DaemonSetStatusViewer{c: client}
msg, done, err := dsv.Status("bar", "foo", 0)
msg, done, err := dsv.Status(unstructuredD, 0)
errMsg := "rollout status is only available for RollingUpdate strategy type"
if err == nil || err.Error() != errMsg {
t.Errorf("Status for daemon sets with UpdateStrategy type different than RollingUpdate should return error. Instead got: msg: %s\ndone: %t\n err: %v", msg, done, err)