100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
package dao
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import (
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"context"
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"errors"
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"fmt"
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"github.com/derailed/k9s/internal/client"
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appsv1 "k8s.io/api/apps/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubectl/pkg/polymorphichelpers"
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)
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var (
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_ Accessor = (*StatefulSet)(nil)
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_ Nuker = (*StatefulSet)(nil)
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_ Loggable = (*StatefulSet)(nil)
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_ Restartable = (*StatefulSet)(nil)
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_ Scalable = (*StatefulSet)(nil)
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)
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// StatefulSet represents a K8s sts.
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type StatefulSet struct {
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Resource
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}
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// Scale a StatefulSet.
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func (s *StatefulSet) Scale(path string, replicas int32) error {
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ns, n := client.Namespaced(path)
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auth, err := s.Client().CanI(ns, "apps/v1/statefulsets:scale", []string{client.GetVerb, client.UpdateVerb})
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if err != nil {
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return err
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}
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if !auth {
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return fmt.Errorf("user is not authorized to scale statefulsets")
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}
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scale, err := s.Client().DialOrDie().AppsV1().StatefulSets(ns).GetScale(n, metav1.GetOptions{})
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if err != nil {
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return err
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}
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scale.Spec.Replicas = replicas
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_, err = s.Client().DialOrDie().AppsV1().StatefulSets(ns).UpdateScale(n, scale)
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return err
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}
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// Restart a StatefulSet rollout.
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func (s *StatefulSet) Restart(path string) error {
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o, err := s.Factory.Get(s.gvr.String(), path, true, labels.Everything())
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if err != nil {
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return err
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}
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var ds appsv1.StatefulSet
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err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &ds)
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if err != nil {
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return err
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}
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ns, _ := client.Namespaced(path)
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auth, err := s.Client().CanI(ns, "apps/v1/statefulsets", []string{client.PatchVerb})
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if err != nil {
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return err
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}
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if !auth {
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return fmt.Errorf("user is not authorized to update statefulsets")
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}
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update, err := polymorphichelpers.ObjectRestarterFn(&ds)
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if err != nil {
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return err
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}
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_, err = s.Client().DialOrDie().AppsV1().StatefulSets(ds.Namespace).Patch(ds.Name, types.StrategicMergePatchType, update)
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return err
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}
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// TailLogs tail logs for all pods represented by this StatefulSet.
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func (s *StatefulSet) TailLogs(ctx context.Context, c chan<- []byte, opts LogOptions) error {
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o, err := s.Factory.Get(s.gvr.String(), opts.Path, true, labels.Everything())
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if err != nil {
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return err
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}
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var sts appsv1.StatefulSet
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err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &sts)
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if err != nil {
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return errors.New("expecting StatefulSet resource")
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}
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if sts.Spec.Selector == nil || len(sts.Spec.Selector.MatchLabels) == 0 {
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return fmt.Errorf("No valid selector found on StatefulSet %s", opts.Path)
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}
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return podLogs(ctx, c, sts.Spec.Selector.MatchLabels, opts)
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}
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