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delete.go
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delete.go
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// Copyright 2016 Red Hat, Inc.
//
// 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 cmd
import (
"fmt"
"github.com/spf13/cobra"
"k8s.io/client-go/1.5/kubernetes"
"k8s.io/client-go/1.5/pkg/api"
"k8s.io/client-go/1.5/pkg/api/v1"
"strings"
)
type deleteCmd struct {
kubeclient *kubernetes.Clientset
cmd *cobra.Command
kubeConfigPath string
kind string
namespace string
name string
all bool
}
func init() {
RootCmd.AddCommand(newDeleteCmd())
}
func newDeleteCmd() *cobra.Command {
p := &deleteCmd{}
cmd := &cobra.Command{
Use: "delete KIND ([NAME] | --all) [flags]",
Short: "delete resources",
Long: `This command will delete one more resources`,
Run: func(cmd *cobra.Command, args []string) {
p.cmd = cmd
if len(args) == 0 {
handleError(fmt.Errorf("No resource kind argument supplied!"))
return
}
p.kind = args[0]
if len(args) > 1 {
p.name = args[1]
}
err := createKubernetesClient(cmd, p.kubeConfigPath, &p.kubeclient, &p.namespace)
if err != nil {
handleError(err)
return
}
handleError(p.run())
},
}
f := cmd.Flags()
f.StringVar(&p.kubeConfigPath, "kubeconfig", "", "the directory to look for the kubernetes configuration")
f.StringVarP(&p.namespace, "namespace", "n", "", "the namespace to query")
f.BoolVar(&p.all, "all", false, "whether to delete all resources")
return cmd
}
func (p *deleteCmd) run() error {
kind, listOpts, err := listOptsForKind(p.kind)
if err != nil {
return err
}
cms := p.kubeclient.ConfigMaps(p.namespace)
resources, err := cms.List(*listOpts)
if err != nil {
return err
}
name := p.name
if len(name) == 0 {
if !p.all {
return fmt.Errorf("No `name` specified or the `--all` flag specified so cannot delete a %s", kind)
}
count := 0
for _, resource := range resources.Items {
err = p.deleteResource(&resource)
if err != nil {
return err
}
count++
}
fmt.Printf("Deleted %d %s resource(s)\n", count, kind)
} else {
for _, resource := range resources.Items {
if resource.Name == name {
err = p.deleteResource(&resource)
if err == nil {
fmt.Printf("Deleted %s \"%s\" resource\n", kind, name)
}
return err
}
}
return fmt.Errorf("%s \"%s\" not found", kind, name)
}
return nil
}
func (p *deleteCmd) deleteResource(cm *v1.ConfigMap) error {
kind := strings.ToLower(cm.Kind)
name := cm.Name
ns := cm.Namespace
if len(ns) == 0 {
ns = p.namespace
}
err := p.kubeclient.ConfigMaps(ns).Delete(name, &api.DeleteOptions{})
if err != nil {
return fmt.Errorf("Failed to delete %s \"%s\" due to: %v", kind, name, err)
}
return nil
}