refactor extend trait feature and doc

Signed-off-by: 天元 <jianbo.sjb@alibaba-inc.com>

pkg/utils/common/common.go

@@ -0,0 +1,40 @@
+package common
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/crossplane/oam-kubernetes-runtime/apis/core"
+	certmanager "github.com/wonderflow/cert-manager-api/pkg/apis/certmanager/v1"
+	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
+
+	"github.com/oam-dev/kubevela/api/types"
+	"github.com/oam-dev/kubevela/api/v1alpha1"
+	k8sruntime "k8s.io/apimachinery/pkg/runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client/config"
+)
+
+var (
+	Scheme = k8sruntime.NewScheme()
+)
+
+func init() {
+	_ = clientgoscheme.AddToScheme(Scheme)
+	_ = certmanager.AddToScheme(Scheme)
+	_ = core.AddToScheme(Scheme)
+	_ = v1alpha1.AddToScheme(Scheme)
+	// +kubebuilder:scaffold:scheme
+}
+
+func InitBaseRestConfig() (types.Args, error) {
+	restConf, err := config.GetConfig()
+	if err != nil {
+		fmt.Println("get kubeConfig err", err)
+		os.Exit(1)
+	}
+
+	return types.Args{
+		Config: restConf,
+		Schema: Scheme,
+	}, nil
+}

pkg/utils/helm/helm.go

@@ -7,6 +7,8 @@ import (
 	"os"
 	"strings"
 
+	"github.com/oam-dev/kubevela/pkg/utils/common"
+
 	"github.com/pkg/errors"
 	"helm.sh/helm/v3/pkg/action"
 	"helm.sh/helm/v3/pkg/chart"
@@ -15,17 +17,41 @@ import (
 	"helm.sh/helm/v3/pkg/getter"
 	"helm.sh/helm/v3/pkg/release"
 	"helm.sh/helm/v3/pkg/repo"
+	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/oam-dev/kubevela/api/types"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 )
 
+const VelaDebugLog = "VELA_DEBUG"
+
 var (
 	settings = cli.New()
 )
 
 func Install(ioStreams cmdutil.IOStreams, repoName, repoURL, chartName, version, namespace, releaseName string,
 	vals map[string]interface{}) error {
+
+	if len(namespace) > 0 {
+		args, err := common.InitBaseRestConfig()
+		if err != nil {
+			return err
+		}
+		kubeClient, err := client.New(args.Config, client.Options{Scheme: args.Schema})
+		if err != nil {
+			return err
+		}
+		exist, err := cmdutil.DoesNamespaceExist(kubeClient, namespace)
+		if err != nil {
+			return err
+		}
+		if !exist {
+			if err = cmdutil.NewNamespace(kubeClient, namespace); err != nil {
+				return fmt.Errorf("create namespace (%s) failed for chart %s: %s", namespace, chartName, err)
+			}
+		}
+	}
+
 	if !IsHelmRepositoryExist(repoName, repoURL) {
 		err := AddHelmRepository(repoName, repoURL,
 			"", "", "", "", "", false, ioStreams.Out)
@@ -195,7 +221,9 @@ func GetHelmRelease(ns string) ([]*release.Release, error) {
 }
 
 func GetChart(client *action.Install, name string) (*chart.Chart, error) {
-	settings.Debug = true
+	if os.Getenv(VelaDebugLog) != "" {
+		settings.Debug = true
+	}
 
 	chartPath, err := client.ChartPathOptions.LocateChart(name, settings)
 	if err != nil {
@@ -208,3 +236,7 @@ func GetChart(client *action.Install, name string) (*chart.Chart, error) {
 	}
 	return chartRequested, nil
 }
+
+func InstallHelmChart(ioStreams cmdutil.IOStreams, c types.Chart) error {
+	return Install(ioStreams, c.Repo, c.URL, c.Name, c.Version, c.Namespace, c.Name, c.Values)
+}