130 lines
2.9 KiB
Go
130 lines
2.9 KiB
Go
// SPDX-License-Identifier: Apache-2.0
|
|
// Copyright Authors of K9s
|
|
|
|
package dao
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/derailed/k9s/internal/client"
|
|
"github.com/derailed/k9s/internal/render"
|
|
appsv1 "k8s.io/api/apps/v1"
|
|
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
|
|
"k8s.io/apimachinery/pkg/labels"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
cmdutil "k8s.io/kubectl/pkg/cmd/util"
|
|
"k8s.io/kubectl/pkg/polymorphichelpers"
|
|
)
|
|
|
|
var (
|
|
_ ImageLister = (*ReplicaSet)(nil)
|
|
)
|
|
|
|
// ReplicaSet represents a replicaset K8s resource.
|
|
type ReplicaSet struct {
|
|
Resource
|
|
}
|
|
|
|
// ListImages lists container images.
|
|
func (r *ReplicaSet) ListImages(ctx context.Context, fqn string) ([]string, error) {
|
|
rs, err := r.Load(r.Factory, fqn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return render.ExtractImages(&rs.Spec.Template.Spec), nil
|
|
}
|
|
|
|
// Load returns a given instance.
|
|
func (r *ReplicaSet) Load(f Factory, path string) (*appsv1.ReplicaSet, error) {
|
|
o, err := f.Get("apps/v1/replicasets", path, true, labels.Everything())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var rs appsv1.ReplicaSet
|
|
err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &rs)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &rs, nil
|
|
}
|
|
|
|
func getRSRevision(rs *appsv1.ReplicaSet) (int64, error) {
|
|
revision := rs.ObjectMeta.Annotations["deployment.kubernetes.io/revision"]
|
|
if rs.Status.Replicas != 0 {
|
|
return 0, errors.New("can not rollback current replica")
|
|
}
|
|
vers, err := strconv.Atoi(revision)
|
|
if err != nil {
|
|
return 0, errors.New("revision conversion failed")
|
|
}
|
|
|
|
return int64(vers), nil
|
|
}
|
|
|
|
func controllerInfo(rs *appsv1.ReplicaSet) (string, string, string, error) {
|
|
for _, ref := range rs.ObjectMeta.OwnerReferences {
|
|
if ref.Controller == nil {
|
|
continue
|
|
}
|
|
group, tokens := ref.APIVersion, strings.Split(ref.APIVersion, "/")
|
|
if len(tokens) == 2 {
|
|
group = tokens[0]
|
|
}
|
|
return ref.Name, ref.Kind, group, nil
|
|
}
|
|
return "", "", "", fmt.Errorf("Unable to find controller for ReplicaSet %s", rs.ObjectMeta.Name)
|
|
}
|
|
|
|
// Rollback reverses the last deployment.
|
|
func (r *ReplicaSet) Rollback(fqn string) error {
|
|
rs, err := r.Load(r.Factory, fqn)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
version, err := getRSRevision(rs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
name, kind, apiGroup, err := controllerInfo(rs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dial, err := r.Client().Dial()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
rb, err := polymorphichelpers.RollbackerFor(schema.GroupKind{
|
|
Group: apiGroup,
|
|
Kind: kind,
|
|
},
|
|
dial,
|
|
)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var ddp Deployment
|
|
ddp.Init(r.Factory, client.NewGVR("apps/v1/deployments"))
|
|
dp, err := ddp.GetInstance(client.FQN(rs.Namespace, name))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = rb.Rollback(dp, map[string]string{}, version, cmdutil.DryRunNone)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|