105 lines
2.3 KiB
Go
105 lines
2.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"github.com/Sirupsen/logrus"
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"github.com/docker/containerkit"
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"github.com/docker/containerkit/oci"
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"github.com/docker/containerkit/osutils"
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specs "github.com/opencontainers/runtime-spec/specs-go"
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)
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func runContainer() error {
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// create a new runc runtime that implements the ExecutionDriver interface
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runc, err := oci.New(oci.Opts{
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Root: "/run/runc",
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Name: "runc",
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})
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if err != nil {
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return err
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}
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dockerContainer := &testConfig{}
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// create a new container
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container, err := containerkit.NewContainer(dockerContainer, NewBindDriver(), runc)
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if err != nil {
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return err
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}
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// setup some stdio for our container
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container.Stdin = os.Stdin
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container.Stdout = os.Stdout
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container.Stderr = os.Stderr
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// go ahead and set the container in the create state and have it ready to start
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logrus.Info("create container")
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if err := container.Create(); err != nil {
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return err
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}
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// start the user defined process in the container
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logrus.Info("start container")
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if err := container.Start(); err != nil {
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return err
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}
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// start 10 exec processes giving the go var i to exec to stdout
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for i := 0; i < 10; i++ {
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process, err := container.NewProcess(&specs.Process{
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Args: []string{
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"echo", fmt.Sprintf("sup from itteration %d", i),
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},
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Env: env,
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Terminal: false,
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Cwd: "/",
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NoNewPrivileges: true,
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Capabilities: caps,
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})
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process.Stdin = os.Stdin
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process.Stdout = os.Stdout
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process.Stderr = os.Stderr
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if err := process.Start(); err != nil {
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return err
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}
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procStatus, err := process.Wait()
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if err != nil {
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return err
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}
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logrus.Infof("process %d returned with %d", i, procStatus)
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}
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container, err = containerkit.LoadContainer(dockerContainer, runc)
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if err != nil {
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return err
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}
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// wait for it to exit and get the exit status
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logrus.Info("wait container")
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status, err := container.Wait()
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if err != nil {
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return err
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}
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// delete the container after it is done
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logrus.Info("delete container")
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if container.Delete(); err != nil {
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return err
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}
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logrus.Infof("exit status %d", status)
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return nil
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}
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// "Hooks do optional work. Drivers do mandatory work"
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func main() {
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if err := osutils.SetSubreaper(1); err != nil {
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logrus.Fatal(err)
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}
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if err := runContainer(); err != nil {
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logrus.Fatal(err)
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}
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}
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