145 lines
3.4 KiB
Go
145 lines
3.4 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package tasks
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import (
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"errors"
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"github.com/containerd/console"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/cio"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/containerd/containerd/errdefs"
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"github.com/containerd/containerd/log"
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"github.com/urfave/cli"
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)
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var startCommand = cli.Command{
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Name: "start",
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Usage: "Start a container that has been created",
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ArgsUsage: "CONTAINER",
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Flags: append(platformStartFlags, []cli.Flag{
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cli.BoolFlag{
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Name: "null-io",
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Usage: "Send all IO to /dev/null",
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},
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cli.StringFlag{
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Name: "log-uri",
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Usage: "Log uri",
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},
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cli.StringFlag{
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Name: "fifo-dir",
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Usage: "Directory used for storing IO FIFOs",
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},
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cli.StringFlag{
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Name: "pid-file",
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Usage: "File path to write the task's pid",
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},
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cli.BoolFlag{
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Name: "detach,d",
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Usage: "Detach from the task after it has started execution",
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},
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}...),
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Action: func(context *cli.Context) error {
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var (
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err error
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id = context.Args().Get(0)
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detach = context.Bool("detach")
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)
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if id == "" {
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return errors.New("container id must be provided")
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}
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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container, err := client.LoadContainer(ctx, id)
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if err != nil {
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return err
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}
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spec, err := container.Spec(ctx)
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if err != nil {
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return err
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}
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var (
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tty = spec.Process.Terminal
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opts = GetNewTaskOpts(context)
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ioOpts = []cio.Opt{cio.WithFIFODir(context.String("fifo-dir"))}
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)
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var con console.Console
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if tty {
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con = console.Current()
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defer con.Reset()
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if err := con.SetRaw(); err != nil {
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return err
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}
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}
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task, err := NewTask(ctx, client, container, "", con, context.Bool("null-io"), context.String("log-uri"), ioOpts, opts...)
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if err != nil {
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return err
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}
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var statusC <-chan containerd.ExitStatus
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if !detach {
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defer func() {
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if _, err := task.Delete(ctx, containerd.WithProcessKill); err != nil && !errdefs.IsNotFound(err) {
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log.L.WithError(err).Error("failed to cleanup task")
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}
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}()
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if statusC, err = task.Wait(ctx); err != nil {
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return err
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}
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}
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if context.IsSet("pid-file") {
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if err := commands.WritePidFile(context.String("pid-file"), int(task.Pid())); err != nil {
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return err
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}
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}
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if err := task.Start(ctx); err != nil {
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return err
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}
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if detach {
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return nil
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}
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if tty {
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if err := HandleConsoleResize(ctx, task, con); err != nil {
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log.L.WithError(err).Error("console resize")
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}
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} else {
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sigc := commands.ForwardAllSignals(ctx, task)
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defer commands.StopCatch(sigc)
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}
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status := <-statusC
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code, _, err := status.Result()
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if err != nil {
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return err
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}
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if _, err := task.Delete(ctx); err != nil {
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return err
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}
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if code != 0 {
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return cli.NewExitError("", int(code))
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}
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return nil
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},
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}
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