117 lines
2.6 KiB
Go
117 lines
2.6 KiB
Go
package dao
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import (
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"errors"
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"fmt"
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"strconv"
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"strings"
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"github.com/derailed/k9s/internal/client"
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appsv1 "k8s.io/api/apps/v1"
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v1 "k8s.io/api/apps/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/runtime/schema"
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"k8s.io/kubectl/pkg/polymorphichelpers"
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)
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// ReplicaSet represents a replicaset K8s resource.
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type ReplicaSet struct {
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Resource
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}
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// BOZO!!
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// // IsHappy check for happy deployments.
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// func (*ReplicaSet) IsHappy(rs appsv1.ReplicaSet) bool {
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// if rs.Status.Replicas == 0 && rs.Status.Replicas != rs.Status.ReadyReplicas {
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// return false
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// }
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// if rs.Status.Replicas != 0 && rs.Status.Replicas != rs.Status.ReadyReplicas {
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// return false
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// }
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// return true
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// }
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func (r *ReplicaSet) Load(f Factory, path string) (*v1.ReplicaSet, error) {
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o, err := f.Get("apps/v1/replicasets", path, true, labels.Everything())
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if err != nil {
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return nil, err
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}
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var rs appsv1.ReplicaSet
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err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &rs)
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if err != nil {
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return nil, err
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}
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return &rs, nil
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}
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func getRSRevision(rs *v1.ReplicaSet) (int64, error) {
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revision := rs.ObjectMeta.Annotations["deployment.kubernetes.io/revision"]
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if rs.Status.Replicas != 0 {
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return 0, errors.New("can not rollback current replica")
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}
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vers, err := strconv.Atoi(revision)
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if err != nil {
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return 0, errors.New("revision conversion failed")
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}
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return int64(vers), nil
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}
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func controllerInfo(rs *v1.ReplicaSet) (string, string, string, error) {
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for _, ref := range rs.ObjectMeta.OwnerReferences {
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if ref.Controller == nil {
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continue
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}
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group, tokens := ref.APIVersion, strings.Split(ref.APIVersion, "/")
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if len(tokens) == 2 {
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group = tokens[0]
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}
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return ref.Name, ref.Kind, group, nil
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}
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return "", "", "", fmt.Errorf("Unable to find controller for ReplicaSet %s", rs.ObjectMeta.Name)
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}
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// Rollback reverses the last deployment.
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func (r *ReplicaSet) Rollback(fqn string) error {
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rs, err := r.Load(r.Factory, fqn)
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if err != nil {
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return err
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}
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version, err := getRSRevision(rs)
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if err != nil {
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return err
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}
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name, kind, apiGroup, err := controllerInfo(rs)
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if err != nil {
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return err
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}
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rb, err := polymorphichelpers.RollbackerFor(schema.GroupKind{
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Group: apiGroup,
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Kind: kind},
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r.Client().DialOrDie(),
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)
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if err != nil {
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return err
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}
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var ddp Deployment
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dp, err := ddp.Load(r.Factory, client.FQN(rs.Namespace, name))
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if err != nil {
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return err
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}
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_, err = rb.Rollback(dp, map[string]string{}, version, false)
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if err != nil {
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return err
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}
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return nil
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}
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