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kill.go
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kill.go
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package tasks
import (
"github.com/containerd/containerd"
"github.com/containerd/containerd/cmd/ctr/commands"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
var killCommand = cli.Command{
Name: "kill",
Usage: "signal a container (default: SIGTERM)",
ArgsUsage: "[flags] CONTAINER",
Flags: []cli.Flag{
cli.StringFlag{
Name: "signal, s",
Value: "SIGTERM",
Usage: "signal to send to the container",
},
cli.StringFlag{
Name: "exec-id",
Usage: "process ID to kill",
},
cli.BoolFlag{
Name: "all, a",
Usage: "send signal to all processes inside the container",
},
},
Action: func(context *cli.Context) error {
id := context.Args().First()
if id == "" {
return errors.New("container id must be provided")
}
signal, err := commands.ParseSignal(context.String("signal"))
if err != nil {
return err
}
var (
all = context.Bool("all")
execID = context.String("exec-id")
opts []containerd.KillOpts
)
if all && execID != "" {
return errors.New("specify an exec-id or all; not both")
}
client, ctx, cancel, err := commands.NewClient(context)
if err != nil {
return err
}
defer cancel()
if all {
opts = append(opts, containerd.WithKillAll)
}
if execID != "" {
opts = append(opts, containerd.WithKillExecID(execID))
}
container, err := client.LoadContainer(ctx, id)
if err != nil {
return err
}
task, err := container.Task(ctx, nil)
if err != nil {
return err
}
return task.Kill(ctx, signal, opts...)
},
}