mirror of
https://github.com/alibaba/higress.git
synced 2026-03-02 07:30:49 +08:00
137 lines
4.0 KiB
Go
137 lines
4.0 KiB
Go
// Copyright (c) 2022 Alibaba Group Holding Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hgctl
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import (
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"fmt"
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"io"
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"strings"
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"github.com/alibaba/higress/pkg/cmd/hgctl/helm"
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"github.com/alibaba/higress/pkg/cmd/hgctl/installer"
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"github.com/alibaba/higress/pkg/cmd/hgctl/kubernetes"
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"github.com/alibaba/higress/pkg/cmd/options"
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"github.com/spf13/cobra"
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)
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type uninstallArgs struct {
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// purgeIstioCRD delete all of Istio resources.
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purgeIstioCRD bool
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// istioNamespace is the target namespace of istio control plane.
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istioNamespace string
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// namespace is the namespace of higress installed .
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namespace string
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}
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func addUninstallFlags(cmd *cobra.Command, args *uninstallArgs) {
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cmd.PersistentFlags().StringVar(&args.istioNamespace, "istio-namespace", "istio-system",
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"The namespace of Istio Control Plane.")
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cmd.PersistentFlags().StringVarP(&args.namespace, "namespace", "n", "higress-system",
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"The namespace of higress")
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cmd.PersistentFlags().BoolVarP(&args.purgeIstioCRD, "purge-istio-crd", "p", false,
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"Delete all of Istio resources")
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}
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// newUninstallCmd command uninstalls Istio from a cluster
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func newUninstallCmd() *cobra.Command {
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uiArgs := &uninstallArgs{}
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uninstallCmd := &cobra.Command{
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Use: "uninstall",
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Short: "Uninstall higress from a cluster",
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Long: "The uninstall command uninstalls higress from a cluster",
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Example: ` # Uninstall higress
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hgctl uninstall
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# Uninstall higress by special namespace
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hgctl uninstall --namespace=higress-system
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# Uninstall higress and istio CRD
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hgctl uninstall --purge-istio-crd --istio-namespace=istio-system`,
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RunE: func(cmd *cobra.Command, args []string) error {
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return uninstall(cmd.OutOrStdout(), uiArgs)
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},
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}
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addUninstallFlags(uninstallCmd, uiArgs)
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flags := uninstallCmd.Flags()
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options.AddKubeConfigFlags(flags)
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return uninstallCmd
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}
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// uninstall uninstalls control plane by either pruning by target revision or deleting specified manifests.
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func uninstall(writer io.Writer, uiArgs *uninstallArgs) error {
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setFlags := make([]string, 0)
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profileName := helm.GetUninstallProfileName()
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_, profile, err := helm.GenProfile(profileName, "", setFlags)
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if err != nil {
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return err
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}
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if !promptUninstall(writer) {
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return nil
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}
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profile.Global.EnableIstioAPI = uiArgs.purgeIstioCRD
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profile.Global.Namespace = uiArgs.namespace
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profile.Global.IstioNamespace = uiArgs.istioNamespace
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err = UnInstallManifests(profile, writer)
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if err != nil {
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return err
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}
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return nil
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}
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func promptUninstall(writer io.Writer) bool {
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answer := ""
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for {
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fmt.Fprintf(writer, "All Higress resources will be uninstalled from the cluster. \nProceed? (y/N)")
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fmt.Scanln(&answer)
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if strings.TrimSpace(answer) == "y" {
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fmt.Fprintf(writer, "\n")
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return true
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}
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if strings.TrimSpace(answer) == "N" {
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fmt.Fprintf(writer, "Cancelled.\n")
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return false
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}
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}
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}
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func UnInstallManifests(profile *helm.Profile, writer io.Writer) error {
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cliClient, err := kubernetes.NewCLIClient(options.DefaultConfigFlags.ToRawKubeConfigLoader())
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if err != nil {
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return fmt.Errorf("failed to build kubernetes client: %w", err)
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}
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op, err := installer.NewInstaller(profile, cliClient, writer, false)
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if err != nil {
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return err
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}
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if err := op.Run(); err != nil {
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return err
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}
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manifestMap, err := op.RenderManifests()
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if err != nil {
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return err
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}
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fmt.Fprintf(writer, "\n⌛️ Processing uninstallation... \n\n")
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if err := op.DeleteManifests(manifestMap); err != nil {
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return err
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}
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fmt.Fprintf(writer, "\n🎊 Uninstall All Resources Complete!\n")
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return nil
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}
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