dmvolod commented on a change in pull request #891: #38: add uninstall command URL: https://github.com/apache/camel-k/pull/891#discussion_r309396216
########## File path: pkg/cmd/uninstall.go ########## @@ -0,0 +1,224 @@ +/* +Licensed to the Apache Software Foundation (ASF) under one or more +contributor license agreements. See the NOTICE file distributed with +this work for additional information regarding copyright ownership. +The ASF licenses this file to You 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 cmd + +import ( + "fmt" + "github.com/apache/camel-k/pkg/util/kubernetes/customclient" + + "github.com/apache/camel-k/pkg/client" + "github.com/spf13/cobra" + k8serrors "k8s.io/apimachinery/pkg/api/errors" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" +) + +func newCmdUninstall(rootCmdOptions *RootCmdOptions) *cobra.Command { + options := uninstallCmdOptions{ + RootCmdOptions: rootCmdOptions, + } + + cmd := cobra.Command{ + Use: "uninstall", + Short: "Uninstall Camel K from a Kubernetes cluster", + Long: `Uninstalls Camel K from a Kubernetes or OpenShift cluster.`, + Run: options.uninstall, + } + + cmd.Flags().BoolVar(&options.skipOperator, "skip-operator", false, "Do not uninstall the Camel-K Operator in the current namespace") + cmd.Flags().BoolVar(&options.skipCrd, "skip-crd", false, "Do not uninstall the Camel-k Custom Resource Definitions (CRD) in the current namespace") + cmd.Flags().BoolVar(&options.skipRoleBindings, "skip-role-bindings", false, "Do not uninstall the Camel-K Role Bindings in the current namespace") + cmd.Flags().BoolVar(&options.skipRoles, "skip-roles", false, "Do not uninstall the Camel-K Roles in the current namespace") + cmd.Flags().BoolVar(&options.skipClusterRoles, "skip-cluster-roles", false, "Do not uninstall the Camel-K Cluster Roles in the current namespace") + cmd.Flags().BoolVar(&options.skipIntegrationPlatform, "skip-Integration-Platform", false, "Do not uninstall the Camel-K Integration Platform in the current namespace") + + // completion support + configureBashAnnotationForFlag( + &cmd, + "context", + map[string][]string{ + cobra.BashCompCustom: {"kamel_kubectl_get_known_integrationcontexts"}, + }, + ) + + return &cmd +} + +type uninstallCmdOptions struct { + *RootCmdOptions + skipOperator bool + skipCrd bool + skipRoleBindings bool + skipRoles bool + skipClusterRoles bool + skipIntegrationPlatform bool +} + +func (o *uninstallCmdOptions) uninstall(_ *cobra.Command, _ []string) { + c, err := o.GetCmdClient() + if err != nil { + fmt.Print(err) + return + } + + if !o.skipIntegrationPlatform{ + if err = o.uninstallIntegrationPlatform(c); err != nil { + fmt.Print(err) + return + } + fmt.Printf("Camel-K Integration Platform removed from namespace %s\n", o.Namespace) + } + + if err = o.uninstallClusterWideResources(c); err != nil { + fmt.Print(err) + return + } + fmt.Printf("Camel-K Cluster Wide Resources removed from namespace %s\n", o.Namespace) + + if !o.skipOperator { + if err = o.uninstallOperator(c); err != nil { + fmt.Print(err) + return + } + fmt.Printf("Camel-K Operator removed from namespace %s\n", o.Namespace) + } + + return +} + +func (o *uninstallCmdOptions) uninstallOperator(c client.Client) error { + api := c.AppsV1() + + listOptions := metav1.ListOptions{ + LabelSelector: "app=camel-k,camel.apache.org/component=operator", + } + + deployments, err := api.Deployments(o.Namespace).List(listOptions) + if err != nil { + return err + } + + for _, deployment := range deployments.Items { + api.Deployments(o.Namespace).Delete(deployment.Name, &metav1.DeleteOptions{}) + } + + return nil +} + +func (o *uninstallCmdOptions) uninstallClusterWideResources(c client.Client) error { + if !o.skipCrd { + if err := o.uninstallCrd(c); err != nil { + return err + } + fmt.Printf("Camel-K Custom Resourse Definitions removed from namespace %s\n", o.Namespace) + } + + if !o.skipRoleBindings { + if err := o.uninstallRoleBindings(c); err != nil { + return err + } + fmt.Printf("Camel-K Role Bindings removed from namespace %s\n", o.Namespace) + } + + if !o.skipClusterRoles { + if err := o.uninstallClusterRoles(c); err != nil { + return err + } + fmt.Printf("Camel-K Cluster Roles removed from namespace %s\n", o.Namespace) + } + + return nil +} + +func (o *uninstallCmdOptions) uninstallCrd(c client.Client) error { + restClient, err := customclient.GetClientFor(c, "apiextensions.k8s.io", "v1beta1") + if err != nil { + return err + } + + result := restClient. + Delete(). + Param("labelSelector", "app=camel-k"). + Resource("customresourcedefinitions"). + Do() + + if result.Error() != nil && !k8serrors.IsAlreadyExists(result.Error()) { + return result.Error() + } + + return nil +} + +func (o *uninstallCmdOptions) uninstallRoleBindings(c client.Client) error { + api := c.RbacV1() + + listOptions := metav1.ListOptions{ + LabelSelector: "app=camel-k", + } + + roleBindings, err := api.RoleBindings(o.Namespace).List(listOptions) + if err != nil { + return err + } + + for _, roleBinding := range roleBindings.Items { + api.ClusterRoles().Delete(roleBinding.Name, &metav1.DeleteOptions{}) + } + + return nil +} + +func (o *uninstallCmdOptions) uninstallClusterRoles(c client.Client) error { + api := c.RbacV1() + + listOptions := metav1.ListOptions{ + LabelSelector: "app=camel-k", + } + + clusterRoles, err := api.ClusterRoles().List(listOptions) + if err != nil { + return err + } + + for _, clusterRole := range clusterRoles.Items { + api.ClusterRoles().Delete(clusterRole.Name, &metav1.DeleteOptions{}) + } + + return nil +} + +func (o *uninstallCmdOptions) uninstallIntegrationPlatform(c client.Client) error { + api, err := customclient.GetDefaultDynamicClientFor("integrations", o.Namespace) + if err != nil { + return err + } + + listOptions := metav1.ListOptions{ + LabelSelector: "app=camel-k,camel.apache.org/component=operator", Review comment: looks like the pr #884 need to be resolved for labeleing operator with app: camel-k ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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