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attach.go
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attach.go
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 2023, Unikraft GmbH and The KraftKit Authors.
// Licensed under the BSD-3-Clause License (the "License").
// You may not use this file except in compliance with the License.
package attach
import (
"context"
"fmt"
"github.com/MakeNowJust/heredoc"
"github.com/spf13/cobra"
kraftcloud "sdk.kraft.cloud"
kcvolumes "sdk.kraft.cloud/volumes"
"kraftkit.sh/cmdfactory"
"kraftkit.sh/config"
"kraftkit.sh/internal/cli/kraft/cloud/utils"
"kraftkit.sh/iostreams"
)
type AttachOptions struct {
At string `long:"at" usage:"The path the volume should be mounted to"`
Auth *config.AuthConfig `noattribute:"true"`
Client kcvolumes.VolumesService `noattribute:"true"`
To string `long:"to" usage:"The instance the volume should be attached to"`
metro string
token string
}
// Attach a KraftCloud persistent volume to an instance.
func Attach(ctx context.Context, opts *AttachOptions, args ...string) (*kcvolumes.AttachResponseItem, error) {
var err error
if opts == nil {
opts = &AttachOptions{}
}
if opts.At == "" {
return nil, fmt.Errorf("required to set the destination instance")
}
if opts.To == "" {
return nil, fmt.Errorf("required to set the destination path in the instance")
}
if opts.Auth == nil {
opts.Auth, err = config.GetKraftCloudAuthConfig(ctx, opts.token)
if err != nil {
return nil, fmt.Errorf("could not retrieve credentials: %w", err)
}
}
if opts.Client == nil {
opts.Client = kraftcloud.NewVolumesClient(
kraftcloud.WithToken(config.GetKraftCloudTokenAuthConfig(*opts.Auth)),
)
}
attachResp, err := opts.Client.WithMetro(opts.metro).Attach(ctx, args[0], opts.To, opts.At, false)
if err != nil {
return nil, fmt.Errorf("attaching volume %s: %w", args[0], err)
}
attach, err := attachResp.FirstOrErr()
if err != nil {
return nil, fmt.Errorf("attaching volume %s: %w", args[0], err)
}
return attach, nil
}
func NewCmd() *cobra.Command {
cmd, err := cmdfactory.New(&AttachOptions{}, cobra.Command{
Short: "Attach a persistent volume to an instance",
Use: "attach [FLAGS] UUID|NAME",
Args: cobra.ExactArgs(1),
Aliases: []string{"at"},
Long: "Attach a persistent volume to an instance.",
Example: heredoc.Doc(`
# Attach the volume data to the instance nginx to the path /mnt/data
$ kraft cloud vol attach data --to nginx --at /mnt/data
# Attach a volume to the instance nginx to the path /mnt/data by UUID
$ kraft cloud volume at 77d0316a-fbbe-488d-8618-5bf7a612477a --to nginx --at /mnt/data
`),
Annotations: map[string]string{
cmdfactory.AnnotationHelpGroup: "kraftcloud-vol",
},
})
if err != nil {
panic(err)
}
return cmd
}
func (opts *AttachOptions) Pre(cmd *cobra.Command, _ []string) error {
err := utils.PopulateMetroToken(cmd, &opts.metro, &opts.token)
if err != nil {
return fmt.Errorf("could not populate metro and token: %w", err)
}
return nil
}
func (opts *AttachOptions) Run(ctx context.Context, args []string) error {
volume, err := Attach(ctx, opts, args...)
if err != nil {
return fmt.Errorf("could not create volume: %w", err)
}
_, err = fmt.Fprintln(iostreams.G(ctx).Out, volume.UUID)
return err
}