131 lines
3.2 KiB
Go
131 lines
3.2 KiB
Go
// +build !windows
|
|
|
|
package main
|
|
|
|
import (
|
|
gocontext "context"
|
|
"os"
|
|
"os/signal"
|
|
|
|
"golang.org/x/sys/unix"
|
|
|
|
"github.com/containerd/console"
|
|
"github.com/containerd/containerd"
|
|
digest "github.com/opencontainers/go-digest"
|
|
"github.com/opencontainers/image-spec/specs-go/v1"
|
|
specs "github.com/opencontainers/runtime-spec/specs-go"
|
|
"github.com/sirupsen/logrus"
|
|
"github.com/urfave/cli"
|
|
)
|
|
|
|
func handleConsoleResize(ctx gocontext.Context, task resizer, con console.Console) error {
|
|
// do an initial resize of the console
|
|
size, err := con.Size()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := task.Resize(ctx, uint32(size.Width), uint32(size.Height)); err != nil {
|
|
logrus.WithError(err).Error("resize pty")
|
|
}
|
|
s := make(chan os.Signal, 16)
|
|
signal.Notify(s, unix.SIGWINCH)
|
|
go func() {
|
|
for range s {
|
|
size, err := con.Size()
|
|
if err != nil {
|
|
logrus.WithError(err).Error("get pty size")
|
|
continue
|
|
}
|
|
if err := task.Resize(ctx, uint32(size.Width), uint32(size.Height)); err != nil {
|
|
logrus.WithError(err).Error("resize pty")
|
|
}
|
|
}
|
|
}()
|
|
return nil
|
|
}
|
|
|
|
func withTTY() containerd.SpecOpts {
|
|
return containerd.WithTTY
|
|
}
|
|
|
|
func setHostNetworking() containerd.SpecOpts {
|
|
return containerd.WithHostNamespace(specs.NetworkNamespace)
|
|
}
|
|
|
|
func newContainer(ctx gocontext.Context, client *containerd.Client, context *cli.Context) (containerd.Container, error) {
|
|
var (
|
|
err error
|
|
checkpointIndex digest.Digest
|
|
|
|
ref = context.Args().First()
|
|
id = context.Args().Get(1)
|
|
args = context.Args()[2:]
|
|
tty = context.Bool("tty")
|
|
labelStrings = context.StringSlice("label")
|
|
)
|
|
|
|
labels := labelArgs(labelStrings)
|
|
|
|
if raw := context.String("checkpoint"); raw != "" {
|
|
if checkpointIndex, err = digest.Parse(raw); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
image, err := client.GetImage(ctx, ref)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if checkpointIndex == "" {
|
|
opts := []containerd.SpecOpts{
|
|
containerd.WithImageConfig(ctx, image),
|
|
withEnv(context),
|
|
withMounts(context),
|
|
}
|
|
if len(args) > 0 {
|
|
opts = append(opts, containerd.WithProcessArgs(args...))
|
|
}
|
|
if tty {
|
|
opts = append(opts, withTTY())
|
|
}
|
|
if context.Bool("net-host") {
|
|
opts = append(opts, setHostNetworking())
|
|
}
|
|
spec, err := containerd.GenerateSpec(opts...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var rootfs containerd.NewContainerOpts
|
|
if context.Bool("readonly") {
|
|
rootfs = containerd.WithNewReadonlyRootFS(id, image)
|
|
} else {
|
|
rootfs = containerd.WithNewRootFS(id, image)
|
|
}
|
|
|
|
return client.NewContainer(ctx, id,
|
|
containerd.WithSpec(spec),
|
|
containerd.WithImage(image),
|
|
containerd.WithContainerLabels(labels),
|
|
containerd.WithSnapshotter(context.String("snapshotter")),
|
|
rootfs,
|
|
)
|
|
}
|
|
|
|
return client.NewContainer(ctx, id, containerd.WithCheckpoint(v1.Descriptor{
|
|
Digest: checkpointIndex,
|
|
}, id))
|
|
}
|
|
|
|
func newTask(ctx gocontext.Context, container containerd.Container, checkpoint digest.Digest, tty bool) (containerd.Task, error) {
|
|
if checkpoint == "" {
|
|
io := containerd.Stdio
|
|
if tty {
|
|
io = containerd.StdioTerminal
|
|
}
|
|
return container.NewTask(ctx, io)
|
|
}
|
|
return container.NewTask(ctx, containerd.Stdio, containerd.WithTaskCheckpoint(v1.Descriptor{
|
|
Digest: checkpoint,
|
|
}))
|
|
}
|