/
statefulset.go
74 lines (59 loc) · 2.36 KB
/
statefulset.go
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package globalhelper
import (
"context"
"fmt"
"time"
. "github.com/onsi/gomega"
"github.com/golang/glog"
appsv1 "k8s.io/api/apps/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
typedappsv1 "k8s.io/client-go/kubernetes/typed/apps/v1"
)
// CreateAndWaitUntilStatefulSetIsReady creates statefulset and waits until all it's replicas are ready.
func CreateAndWaitUntilStatefulSetIsReady(statefulSet *appsv1.StatefulSet, timeout time.Duration) error {
runningStatefulSet, err := GetAPIClient().StatefulSets(statefulSet.Namespace).Create(context.TODO(),
statefulSet, metav1.CreateOptions{})
if k8serrors.IsAlreadyExists(err) {
glog.V(5).Info(fmt.Sprintf("statefulSet %s already exists", statefulSet.Name))
} else if err != nil {
return fmt.Errorf("failed to create statefulSet %q (ns %s): %w", statefulSet.Name, statefulSet.Namespace, err)
}
Eventually(func() bool {
status, err := isStatefulSetReady(runningStatefulSet.Namespace, runningStatefulSet.Name)
if err != nil {
glog.V(5).Info(fmt.Sprintf(
"statefulSet %s is not ready, retry in %d seconds", runningStatefulSet.Name, retryInterval))
return false
}
return status
}, timeout, retryInterval*time.Second).Should(Equal(true), "statefulSet is not ready")
return nil
}
// isStatefulSetReady checks if a statefulset is ready.
func isStatefulSetReady(namespace string, statefulSetName string) (bool, error) {
testStatefulSet, err := GetAPIClient().StatefulSets(namespace).Get(
context.TODO(),
statefulSetName,
metav1.GetOptions{},
)
if err != nil {
return false, err
}
if *testStatefulSet.Spec.Replicas == testStatefulSet.Status.ReadyReplicas &&
testStatefulSet.Status.AvailableReplicas == *testStatefulSet.Spec.Replicas {
return true, nil
}
return false, nil
}
func GetRunningStatefulSet(namespace, statefulSetName string) (*appsv1.StatefulSet, error) {
return getRunningStatefulSet(GetAPIClient().K8sClient.AppsV1(), namespace, statefulSetName)
}
func getRunningStatefulSet(client typedappsv1.AppsV1Interface, namespace, statefulSetName string) (*appsv1.StatefulSet, error) {
runningStatefulSet, err := client.StatefulSets(namespace).Get(context.TODO(),
statefulSetName, metav1.GetOptions{})
if err != nil {
return nil, fmt.Errorf("failed to get statefulSet %q (ns %s): %w", statefulSetName, namespace, err)
}
return runningStatefulSet, nil
}