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stop.go
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stop.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 stop
import (
"context"
"fmt"
"time"
"github.com/MakeNowJust/heredoc"
"github.com/spf13/cobra"
kraftcloud "sdk.kraft.cloud"
"kraftkit.sh/cmdfactory"
"kraftkit.sh/config"
"kraftkit.sh/internal/cli/kraft/cloud/utils"
"kraftkit.sh/log"
)
type StopOptions struct {
Wait time.Duration `local:"true" long:"wait" short:"w" usage:"Time to wait for the instance to drain all connections before it is stopped (ms/s/m/h)"`
DrainTimeout time.Duration `local:"true" long:"drain-timeout" short:"d" usage:"Timeout for the instance to stop (ms/s/m/h)"`
Output string `long:"output" short:"o" usage:"Set output format. Options: table,yaml,json,list" default:"table"`
All bool `long:"all" usage:"Stop all instances"`
Force bool `long:"force" short:"f" usage:"Force stop the instance(s)"`
Metro string `noattribute:"true"`
Token string `noattribute:"true"`
}
// Stop a KraftCloud instance.
func Stop(ctx context.Context, opts *StopOptions, args ...string) error {
if opts == nil {
opts = &StopOptions{}
}
return opts.Run(ctx, args)
}
func NewCmd() *cobra.Command {
cmd, err := cmdfactory.New(&StopOptions{}, cobra.Command{
Short: "Stop an instance",
Use: "stop [FLAGS] [UUID|NAME [UUID|NAME]...]",
Args: cobra.ArbitraryArgs,
Aliases: []string{"st"},
Example: heredoc.Doc(`
# Stop a KraftCloud instance by UUID
$ kraft cloud instance stop 77d0316a-fbbe-488d-8618-5bf7a612477a
# Stop a KraftCloud instance by name
$ kraft cloud instance stop my-instance-431342
# Stop multiple KraftCloud instances
$ kraft cloud instance stop my-instance-431342 my-instance-other-2313
# Stop all KraftCloud instances
$ kraft cloud instance stop --all
# Stop a KraftCloud instanace by name and wait for connections to drain for 5s
$ kraft cloud instance stop --wait 5s my-instance-431342
`),
Long: heredoc.Doc(`
Stop a KraftCloud instance.
`),
Annotations: map[string]string{
cmdfactory.AnnotationHelpGroup: "kraftcloud-instance",
},
})
if err != nil {
panic(err)
}
return cmd
}
func (opts *StopOptions) Pre(cmd *cobra.Command, args []string) error {
if !opts.All && len(args) == 0 {
return fmt.Errorf("either specify an instance UUID or --all flag")
}
err := utils.PopulateMetroToken(cmd, &opts.Metro, &opts.Token)
if err != nil {
return fmt.Errorf("could not populate metro and token: %w", err)
}
if !utils.IsValidOutputFormat(opts.Output) {
return fmt.Errorf("invalid output format: %s", opts.Output)
}
if opts.DrainTimeout != 0 && opts.Wait != 0 {
return fmt.Errorf("drain-timeout and wait flags are mutually exclusive")
}
if opts.DrainTimeout != 0 && opts.Wait == 0 {
opts.Wait = opts.DrainTimeout
log.G(cmd.Context()).Warnf("drain-timeout flag is deprecated, use wait flag instead")
}
if opts.Wait < time.Millisecond && opts.Wait != 0 {
return fmt.Errorf("drain wait timeout must be at least 1ms")
}
return nil
}
func (opts *StopOptions) Run(ctx context.Context, args []string) error {
auth, err := config.GetKraftCloudAuthConfig(ctx, opts.Token)
if err != nil {
return fmt.Errorf("could not retrieve credentials: %w", err)
}
client := kraftcloud.NewInstancesClient(
kraftcloud.WithToken(config.GetKraftCloudTokenAuthConfig(*auth)),
)
timeout := int(opts.Wait.Milliseconds())
if opts.All {
instListResp, err := client.WithMetro(opts.Metro).List(ctx)
if err != nil {
return fmt.Errorf("could not list instances: %w", err)
}
instList, err := instListResp.AllOrErr()
if err != nil {
return fmt.Errorf("could not list instances: %w", err)
}
if len(instList) == 0 {
return nil
}
log.G(ctx).Infof("Stopping %d instance(s)", len(instList))
uuids := make([]string, 0, len(instList))
for _, instItem := range instList {
uuids = append(uuids, instItem.UUID)
}
stopResp, err := client.WithMetro(opts.Metro).Stop(ctx, timeout, opts.Force, uuids...)
if err != nil {
return fmt.Errorf("stopping %d instance(s): %w", len(uuids), err)
}
if _, err = stopResp.AllOrErr(); err != nil {
return fmt.Errorf("stopping %d instance(s): %w", len(uuids), err)
}
return nil
}
log.G(ctx).Infof("Stopping %d instance(s)", len(args))
stopResp, err := client.WithMetro(opts.Metro).Stop(ctx, timeout, opts.Force, args...)
if err != nil {
return fmt.Errorf("stopping %d instance(s): %w", len(args), err)
}
if _, err = stopResp.AllOrErr(); err != nil {
return fmt.Errorf("stopping %d instance(s): %w", len(args), err)
}
return nil
}