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client.go
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client.go
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// Copyright 2022 Namespace Labs Inc; All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
package helm
import (
"context"
"fmt"
"helm.sh/helm/v3/pkg/action"
"helm.sh/helm/v3/pkg/chart"
"helm.sh/helm/v3/pkg/release"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/client-go/discovery"
"k8s.io/client-go/rest"
"k8s.io/client-go/restmapper"
"k8s.io/client-go/tools/clientcmd"
"namespacelabs.dev/foundation/framework/kubernetes/kubedef"
"namespacelabs.dev/foundation/internal/console"
"namespacelabs.dev/foundation/internal/runtime/kubernetes/client"
"namespacelabs.dev/foundation/std/tasks"
)
func NewConfiguration(ctx context.Context, host kubedef.KubeCluster, namespace string) (*action.Configuration, error) {
cfg := &action.Configuration{}
// g := getter{cfg: client.NewClientConfig(ctx, host)}
g := clusterWrapper{host}
debugLogger := func(format string, v ...interface{}) {
fmt.Fprintf(console.Debug(ctx), "helm: "+format+"\n", v...)
}
if err := cfg.Init(g, namespace, "", debugLogger); err != nil {
return nil, err
}
return cfg, nil
}
func NewInstall(ctx context.Context, host kubedef.KubeCluster, releaseName, namespace string, chart *chart.Chart, values map[string]interface{}) (*release.Release, error) {
return tasks.Return(ctx, tasks.Action("helm.install").Arg("chart", chart.Metadata.Name).Arg("name", releaseName),
func(ctx context.Context) (*release.Release, error) {
cfg, err := NewConfiguration(ctx, host, namespace)
if err != nil {
return nil, err
}
const dryRun = false
install := action.NewInstall(cfg)
install.ReleaseName = releaseName
install.Namespace = namespace
install.DryRun = dryRun
install.ClientOnly = dryRun
release, err := install.RunWithContext(ctx, chart, values)
if err != nil {
return nil, err
}
_ = tasks.Attachments(ctx).AttachSerializable("release.json", "helm-release", release)
return release, nil
})
}
type clusterWrapper struct {
cfg kubedef.KubeCluster
}
func (g clusterWrapper) ToRESTConfig() (*rest.Config, error) {
return g.cfg.PreparedClient().RESTConfig, nil
}
func (g clusterWrapper) ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
return client.NewDiscoveryClient(g.cfg.PreparedClient().RESTConfig, false)
}
func (g clusterWrapper) ToRESTMapper() (meta.RESTMapper, error) {
discoveryClient, err := g.ToDiscoveryClient()
if err != nil {
return nil, err
}
mapper := restmapper.NewDeferredDiscoveryRESTMapper(discoveryClient)
expander := restmapper.NewShortcutExpander(mapper, discoveryClient)
return expander, nil
}
func (g clusterWrapper) ToRawKubeConfigLoader() clientcmd.ClientConfig {
return g.cfg.PreparedClient().ClientConfig
}