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create.go
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create.go
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/*
Copyright 2017 Heptio 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 backup
import (
"errors"
"fmt"
"time"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
api "github.com/heptio/ark/pkg/apis/ark/v1"
"github.com/heptio/ark/pkg/client"
"github.com/heptio/ark/pkg/cmd"
"github.com/heptio/ark/pkg/cmd/util/flag"
"github.com/heptio/ark/pkg/cmd/util/output"
)
func NewCreateCommand(f client.Factory) *cobra.Command {
o := NewCreateOptions()
c := &cobra.Command{
Use: "create NAME",
Short: "Create a backup",
Run: func(c *cobra.Command, args []string) {
cmd.CheckError(o.Validate(c, args))
cmd.CheckError(o.Complete(args))
cmd.CheckError(o.Run(c, f))
},
}
o.BindFlags(c.Flags())
output.BindFlags(c.Flags())
output.ClearOutputFlagDefault(c)
return c
}
type CreateOptions struct {
Name string
TTL time.Duration
SnapshotVolumes bool
IncludeNamespaces flag.StringArray
ExcludeNamespaces flag.StringArray
IncludeResources flag.StringArray
ExcludeResources flag.StringArray
Labels flag.Map
Selector flag.LabelSelector
}
func NewCreateOptions() *CreateOptions {
return &CreateOptions{
TTL: 24 * time.Hour,
IncludeNamespaces: flag.NewStringArray("*"),
Labels: flag.NewMap(),
}
}
func (o *CreateOptions) BindFlags(flags *pflag.FlagSet) {
flags.DurationVar(&o.TTL, "ttl", o.TTL, "how long before the backup can be garbage collected")
flags.BoolVar(&o.SnapshotVolumes, "snapshot-volumes", o.SnapshotVolumes, "take snapshots of PersistentVolumes as part of the backup")
flags.Var(&o.IncludeNamespaces, "include-namespaces", "namespaces to include in the backup (use '*' for all namespaces)")
flags.Var(&o.ExcludeNamespaces, "exclude-namespaces", "namespaces to exclude from the backup")
flags.Var(&o.IncludeResources, "include-resources", "resources to include in the backup, formatted as resource.group, such as storageclasses.storage.k8s.io (use '*' for all resources)")
flags.Var(&o.ExcludeResources, "exclude-resources", "resources to exclude from the backup, formatted as resource.group, such as storageclasses.storage.k8s.io")
flags.Var(&o.Labels, "labels", "labels to apply to the backup")
flags.VarP(&o.Selector, "selector", "l", "only back up resources matching this label selector")
}
func (o *CreateOptions) Validate(c *cobra.Command, args []string) error {
if len(args) != 1 {
return errors.New("you must specify only one argument, the backup's name")
}
if err := output.ValidateFlags(c); err != nil {
return err
}
return nil
}
func (o *CreateOptions) Complete(args []string) error {
o.Name = args[0]
return nil
}
func (o *CreateOptions) Run(c *cobra.Command, f client.Factory) error {
arkClient, err := f.Client()
if err != nil {
return err
}
backup := &api.Backup{
ObjectMeta: metav1.ObjectMeta{
Namespace: api.DefaultNamespace,
Name: o.Name,
Labels: o.Labels.Data(),
},
Spec: api.BackupSpec{
IncludedNamespaces: o.IncludeNamespaces,
ExcludedNamespaces: o.ExcludeNamespaces,
IncludedResources: o.IncludeResources,
ExcludedResources: o.ExcludeResources,
LabelSelector: o.Selector.LabelSelector,
SnapshotVolumes: o.SnapshotVolumes,
TTL: metav1.Duration{Duration: o.TTL},
},
}
if printed, err := output.PrintWithFormat(c, backup); printed || err != nil {
return err
}
_, err = arkClient.ArkV1().Backups(backup.Namespace).Create(backup)
if err != nil {
return err
}
fmt.Printf("Backup %q created successfully.\n", backup.Name)
return nil
}