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helm.go
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helm.go
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package dao
import (
"context"
"fmt"
"os"
"github.com/derailed/k9s/internal/client"
"github.com/derailed/k9s/internal/render"
"github.com/rs/zerolog/log"
"helm.sh/helm/v3/pkg/action"
"k8s.io/apimachinery/pkg/runtime"
)
var (
_ Accessor = (*Helm)(nil)
_ Nuker = (*Helm)(nil)
_ Describer = (*Helm)(nil)
)
// Helm represents a helm chart.
type Helm struct {
NonResource
}
// List returns a collection of resources.
func (c *Helm) List(ctx context.Context, ns string) ([]runtime.Object, error) {
cfg, err := c.EnsureHelmConfig(ns)
if err != nil {
return nil, err
}
rr, err := action.NewList(cfg).Run()
if err != nil {
return nil, err
}
oo := make([]runtime.Object, 0, len(rr))
for _, r := range rr {
oo = append(oo, render.HelmRes{Release: r})
}
return oo, nil
}
// Get returns a resource.
func (c *Helm) Get(_ context.Context, path string) (runtime.Object, error) {
ns, n := client.Namespaced(path)
cfg, err := c.EnsureHelmConfig(ns)
if err != nil {
return nil, err
}
resp, err := action.NewGet(cfg).Run(n)
if err != nil {
return nil, err
}
return render.HelmRes{Release: resp}, nil
}
// Describe returns the chart notes.
func (c *Helm) Describe(path string) (string, error) {
ns, n := client.Namespaced(path)
cfg, err := c.EnsureHelmConfig(ns)
if err != nil {
return "", err
}
resp, err := action.NewGet(cfg).Run(n)
if err != nil {
return "", err
}
return resp.Info.Notes, nil
}
// ToYAML returns the chart manifest.
func (c *Helm) ToYAML(path string, showManaged bool) (string, error) {
ns, n := client.Namespaced(path)
cfg, err := c.EnsureHelmConfig(ns)
if err != nil {
return "", err
}
resp, err := action.NewGet(cfg).Run(n)
if err != nil {
return "", err
}
return resp.Manifest, nil
}
// Delete uninstall a Helm.
func (c *Helm) Delete(path string, cascade, force bool) error {
ns, n := client.Namespaced(path)
cfg, err := c.EnsureHelmConfig(ns)
if err != nil {
return err
}
res, err := action.NewUninstall(cfg).Run(n)
if err != nil {
return err
}
if res != nil && res.Info != "" {
return fmt.Errorf("%s", res.Info)
}
return nil
}
// EnsureHelmConfig return a new configuration.
func (c *Helm) EnsureHelmConfig(ns string) (*action.Configuration, error) {
cfg := new(action.Configuration)
if err := cfg.Init(c.Client().Config().Flags(), ns, os.Getenv("HELM_DRIVER"), helmLogger); err != nil {
return nil, err
}
return cfg, nil
}
func helmLogger(s string, args ...interface{}) {
log.Debug().Msgf("%s %v", s, args)
}