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runtime_validate.go
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/
runtime_validate.go
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package main
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"github.com/mrunalp/fileutils"
"github.com/opencontainers/runtime-tools/generate"
"github.com/satori/go.uuid"
"github.com/urfave/cli"
)
var runtimeValidateFlags = []cli.Flag{
cli.StringFlag{Name: "runtime", Value: "runc", Usage: "OCI runtime"},
}
var runtimeValidateCommand = cli.Command{
Name: "runtime-validate",
Usage: "validate an OCI runtime",
Flags: runtimeValidateFlags,
Before: before,
Action: func(context *cli.Context) error {
return runtimeValidate(context.String("runtime"))
},
}
func runtimeValidate(runtime string) error {
// Find the runtime binary in the PATH
runtimePath, err := exec.LookPath(runtime)
if err != nil {
return err
}
// Setup a temporary test directory
tmpDir, err := ioutil.TempDir("", "ocitest")
if err != nil {
return err
}
defer os.RemoveAll(tmpDir)
// Create bundle directory for the test container
bundleDir := tmpDir + "/busybox"
if err := os.MkdirAll(bundleDir, 0755); err != nil {
return err
}
// TODO: Use go package for untar and allow using other root filesystems
// Untar the root fs
untarCmd := exec.Command("tar", "-xf", "rootfs.tar.gz", "-C", bundleDir)
output, err := untarCmd.CombinedOutput()
if err != nil {
fmt.Println(string(output))
return err
}
// Copy the runtimetest binary to the rootfs
err = fileutils.CopyFile("runtimetest", filepath.Join(bundleDir, "runtimetest"))
// Generate test configuration
g := generate.New()
g.SetRootPath(".")
g.SetProcessArgs([]string{"/runtimetest"})
err = g.SaveToFile(filepath.Join(bundleDir, "config.json"), generate.ExportOptions{})
if err != nil {
return err
}
// TODO: Use a library to split run into create/start
// Launch the OCI runtime
containerID := uuid.NewV4()
runtimeCmd := exec.Command(runtimePath, "run", containerID.String())
runtimeCmd.Dir = bundleDir
runtimeCmd.Stdin = os.Stdin
runtimeCmd.Stdout = os.Stdout
runtimeCmd.Stderr = os.Stderr
if err = runtimeCmd.Run(); err != nil {
return err
}
return nil
}