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start.go
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start.go
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package tasks
import (
"github.com/containerd/console"
"github.com/containerd/containerd/cmd/ctr/commands"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
var startCommand = cli.Command{
Name: "start",
Usage: "start a container that have been created",
ArgsUsage: "CONTAINER",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "null-io",
Usage: "send all IO to /dev/null",
},
},
Action: func(context *cli.Context) error {
var (
err error
id = context.Args().Get(0)
)
if id == "" {
return errors.New("container id must be provided")
}
client, ctx, cancel, err := commands.NewClient(context)
if err != nil {
return err
}
defer cancel()
container, err := client.LoadContainer(ctx, id)
if err != nil {
return err
}
spec, err := container.Spec(ctx)
if err != nil {
return err
}
tty := spec.Process.Terminal
task, err := NewTask(ctx, client, container, "", tty, context.Bool("null-io"))
if err != nil {
return err
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
return err
}
var con console.Console
if tty {
con = console.Current()
defer con.Reset()
if err := con.SetRaw(); err != nil {
return err
}
}
if err := task.Start(ctx); err != nil {
return err
}
if tty {
if err := HandleConsoleResize(ctx, task, con); err != nil {
logrus.WithError(err).Error("console resize")
}
} else {
sigc := commands.ForwardAllSignals(ctx, task)
defer commands.StopCatch(sigc)
}
status := <-statusC
code, _, err := status.Result()
if err != nil {
return err
}
if _, err := task.Delete(ctx); err != nil {
return err
}
if code != 0 {
return cli.NewExitError("", int(code))
}
return nil
},
}