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|
package main
import (
"fmt"
"io/ioutil"
"os/exec"
"path/filepath"
"strings"
"time"
tap "github.com/mndrix/tap-go"
rspec "github.com/opencontainers/runtime-spec/specs-go"
"github.com/opencontainers/runtime-tools/specerror"
"github.com/opencontainers/runtime-tools/validation/util"
uuid "github.com/satori/go.uuid"
)
func main() {
t := tap.New()
t.Header(0)
var output string
config := util.LifecycleConfig{
Actions: util.LifecycleActionCreate | util.LifecycleActionStart | util.LifecycleActionDelete,
PreCreate: func(r *util.Runtime) error {
r.SetID(uuid.NewV4().String())
g, err := util.GetDefaultGenerator()
if err != nil {
util.Fatal(err)
}
output = filepath.Join(r.BundleDir, g.Spec().Root.Path, "output")
err = g.AddPreStartHook(rspec.Hook{
Path: filepath.Join(r.BundleDir, g.Spec().Root.Path, "/bin/sh"),
Args: []string{
"sh", "-c", fmt.Sprintf("echo 'pre-start called' >> %s", output),
},
})
if err != nil {
return err
}
g.SetProcessArgs([]string{"sh", "-c", fmt.Sprintf("echo 'process called' >> %s", "/output")})
return r.SetConfig(g)
},
PostCreate: func(r *util.Runtime) error {
outputData, err := ioutil.ReadFile(output)
if err == nil {
if strings.Contains(string(outputData), "pre-start called") {
return specerror.NewError(specerror.PrestartTiming, fmt.Errorf("Pre-start hooks MUST be called after the `start` operation is called"), rspec.Version)
} else if strings.Contains(string(outputData), "process called") {
return specerror.NewError(specerror.ProcNotRunAtResRequest, fmt.Errorf("The user-specified program (from process) MUST NOT be run at this time"), rspec.Version)
}
return fmt.Errorf("File %v should not exist", output)
}
return nil
},
PreDelete: func(r *util.Runtime) error {
util.WaitingForStatus(*r, util.LifecycleStatusStopped, time.Second*10, time.Second)
outputData, err := ioutil.ReadFile(output)
if err != nil {
return fmt.Errorf("%v\n%v", specerror.NewError(specerror.PrestartHooksInvoke, fmt.Errorf("The prestart hooks MUST be invoked by the runtime"), rspec.Version), specerror.NewError(specerror.ProcImplement, fmt.Errorf("The runtime MUST run the user-specified program, as specified by `process`"), rspec.Version))
}
switch string(outputData) {
case "pre-start called\n":
return specerror.NewError(specerror.ProcImplement, fmt.Errorf("The runtime MUST run the user-specified program, as specified by `process`"), rspec.Version)
case "process called\n":
return specerror.NewError(specerror.PrestartHooksInvoke, fmt.Errorf("The prestart hooks MUST be invoked by the runtime"), rspec.Version)
case "pre-start called\nprocess called\n":
return nil
case "process called\npre-start called\n":
return specerror.NewError(specerror.PrestartTiming, fmt.Errorf("Pre-start hooks MUST be called before the user-specified program command is executed"), rspec.Version)
default:
return fmt.Errorf("Unsupported output information: %v", string(outputData))
}
},
}
err := util.RuntimeLifecycleValidate(config)
if err != nil {
diagnostic := map[string]string{
"error": err.Error(),
}
if e, ok := err.(*exec.ExitError); ok {
if len(e.Stderr) > 0 {
diagnostic["stderr"] = string(e.Stderr)
}
}
t.YAML(diagnostic)
}
t.AutoPlan()
}
|
