Record the progress of the OSPP 2023 hgctl project (#453)

pkg/cmd/hgctl/plugin/uninstall/uninstall.go

@@ -0,0 +1,102 @@
+// Copyright (c) 2022 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package uninstall
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	k8s "github.com/alibaba/higress/pkg/cmd/hgctl/kubernetes"
+	"github.com/alibaba/higress/pkg/cmd/options"
+	"github.com/pkg/errors"
+
+	"github.com/spf13/cobra"
+	k8serr "k8s.io/apimachinery/pkg/api/errors"
+	cmdutil "k8s.io/kubectl/pkg/cmd/util"
+)
+
+func NewCommand() *cobra.Command {
+	var (
+		name string
+		all  bool
+	)
+
+	uninstallCmd := &cobra.Command{
+		Use:     "uninstall",
+		Aliases: []string{"u", "uins"},
+		Short:   "Uninstall WASM plugin",
+		Example: `  # Uninstall WASM plugin using the WasmPlugin name
+  hgctl plugin uninstall -p example-plugin-name
+
+  # Uninstall all WASM plugins
+  hgctl plugin uninstall -A
+  `,
+		Run: func(cmd *cobra.Command, args []string) {
+			cmdutil.CheckErr(uninstall(cmd.OutOrStdout(), name, all))
+		},
+	}
+
+	flags := uninstallCmd.PersistentFlags()
+	options.AddKubeConfigFlags(flags)
+	k8s.AddHigressNamespaceFlags(flags)
+	flags.StringVarP(&name, "name", "p", "", "Name of the WASM plugin you want to uninstall")
+	flags.BoolVarP(&all, "all", "A", false, "Delete all installed WASM plugin")
+
+	return uninstallCmd
+}
+
+func uninstall(w io.Writer, name string, all bool) error {
+	dynCli, err := k8s.NewDynamicClient(options.DefaultConfigFlags.ToRawKubeConfigLoader())
+	if err != nil {
+		return errors.Wrap(err, "failed to build kubernetes dynamic client")
+	}
+	cli := k8s.NewWasmPluginClient(dynCli)
+
+	ctx := context.TODO()
+	plugins := make([]string, 0)
+	if all {
+		list, err := cli.List(ctx)
+		if err != nil {
+			return errors.Wrap(err, "failed to get information of all wasm plugins")
+		}
+		for _, item := range list.Items {
+			plugins = append(plugins, item.GetName())
+		}
+	} else {
+		plugins = append(plugins, name)
+	}
+
+	for _, p := range plugins {
+		err = deleteOne(ctx, w, cli, p)
+		if err != nil {
+			fmt.Fprintln(w, err.Error())
+		}
+	}
+
+	return nil
+}
+
+func deleteOne(ctx context.Context, w io.Writer, cli *k8s.WasmPluginClient, name string) error {
+	result, err := cli.Delete(ctx, name)
+	if err != nil && k8serr.IsNotFound(err) {
+		return errors.Errorf("wasm plugin %q is not found", fmt.Sprintf("%s/%s", k8s.HigressNamespace, name))
+	} else if err != nil {
+		return errors.Wrapf(err, "failed to uninstall wasm plugin %q", fmt.Sprintf("%s/%s", k8s.HigressNamespace, name))
+	}
+
+	fmt.Fprintf(w, "Uninstalled wasm plugin %q\n", fmt.Sprintf("%s/%s", result.GetNamespace(), result.GetName()))
+	return nil
+}