DockerCLI/cli/command/checkpoint/create.go

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package checkpoint
import (
"context"
"fmt"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/cli/command/completion"
"github.com/docker/docker/api/types/checkpoint"
"github.com/spf13/cobra"
)
type createOptions struct {
container string
checkpoint string
checkpointDir string
leaveRunning bool
}
func newCreateCommand(dockerCli command.Cli) *cobra.Command {
var opts createOptions
cmd := &cobra.Command{
Use: "create [OPTIONS] CONTAINER CHECKPOINT",
Short: "Create a checkpoint from a running container",
Args: cli.ExactArgs(2),
RunE: func(cmd *cobra.Command, args []string) error {
opts.container = args[0]
opts.checkpoint = args[1]
return runCreate(cmd.Context(), dockerCli, opts)
},
ValidArgsFunction: completion.NoComplete,
}
flags := cmd.Flags()
flags.BoolVar(&opts.leaveRunning, "leave-running", false, "Leave the container running after checkpoint")
flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "Use a custom checkpoint storage directory")
return cmd
}
func runCreate(ctx context.Context, dockerCli command.Cli, opts createOptions) error {
err := dockerCli.Client().CheckpointCreate(ctx, opts.container, checkpoint.CreateOptions{
CheckpointID: opts.checkpoint,
CheckpointDir: opts.checkpointDir,
Exit: !opts.leaveRunning,
})
if err != nil {
return err
}
fmt.Fprintf(dockerCli.Out(), "%s\n", opts.checkpoint)
return nil
}