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package main
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"reflect"
"time"
multierror "github.com/hashicorp/go-multierror"
tap "github.com/mndrix/tap-go"
rspecs "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 stdinStateCheck(outputDir, hookName string, expectedState rspecs.State) (errs *multierror.Error) {
var state rspecs.State
data, err := ioutil.ReadFile(filepath.Join(outputDir, hookName))
if err != nil {
errs = multierror.Append(errs, err)
return
}
err = json.Unmarshal(data, &state)
if err != nil {
errs = multierror.Append(errs, err)
return
}
if state.ID != expectedState.ID {
err = fmt.Errorf("wrong container ID %q in the stdin of %s hook, expected %q", state.ID, hookName, expectedState.ID)
errs = multierror.Append(errs, err)
}
if state.Bundle != expectedState.Bundle {
err = fmt.Errorf("wrong bundle directory %q in the stdin of %s hook, expected %q", state.Bundle, hookName, expectedState.Bundle)
errs = multierror.Append(errs, err)
}
if hookName != "poststop" && state.Pid != expectedState.Pid {
err = fmt.Errorf("wrong container process ID %q in the stdin of %s hook, expected %q", state.Version, hookName, expectedState.Version)
errs = multierror.Append(errs, err)
}
if !reflect.DeepEqual(state.Annotations, expectedState.Annotations) {
err = fmt.Errorf("wrong annotations \"%v\" in the stdin of %s hook, expected \"%v\"", state.Annotations, hookName, expectedState.Annotations)
errs = multierror.Append(errs, err)
}
switch hookName {
case "prestart":
if state.Status != "created" {
err = fmt.Errorf("wrong status %q in the stdin of %s hook, expected %q", state.Status, hookName, "created")
errs = multierror.Append(errs, err)
}
case "poststart":
if state.Status != "running" {
err = fmt.Errorf("wrong status %q in the stdin of %s hook, expected %q", state.Status, hookName, "running")
errs = multierror.Append(errs, err)
}
case "poststop":
if state.Status == "" {
err = fmt.Errorf("status in the stdin of %s hook should not be empty", hookName)
errs = multierror.Append(errs, err)
}
default:
err = fmt.Errorf("internal error, unexpected hook name %q", hookName)
errs = multierror.Append(errs, err)
}
return
}
func main() {
t := tap.New()
t.Header(0)
bundleDir, err := util.PrepareBundle()
if err != nil {
util.Fatal(err)
}
containerID := uuid.NewV4().String()
defer os.RemoveAll(bundleDir)
var containerPid int
annotationKey := "org.opencontainers.runtime-tools"
annotationValue := "hook stdin test"
g, err := util.GetDefaultGenerator()
if err != nil {
util.Fatal(err)
}
outputDir := filepath.Join(bundleDir, g.Spec().Root.Path)
timeout := 1
g.AddAnnotation(annotationKey, annotationValue)
g.AddPreStartHook(rspecs.Hook{
Path: filepath.Join(bundleDir, g.Spec().Root.Path, "/bin/sh"),
Args: []string{
"sh", "-c", fmt.Sprintf("cat > %s", filepath.Join(outputDir, "prestart")),
},
Timeout: &timeout,
})
g.AddPostStartHook(rspecs.Hook{
Path: filepath.Join(bundleDir, g.Spec().Root.Path, "/bin/sh"),
Args: []string{
"sh", "-c", fmt.Sprintf("cat > %s", filepath.Join(outputDir, "poststart")),
},
Timeout: &timeout,
})
g.AddPostStopHook(rspecs.Hook{
Path: filepath.Join(bundleDir, g.Spec().Root.Path, "/bin/sh"),
Args: []string{
"sh", "-c", fmt.Sprintf("cat > %s", filepath.Join(outputDir, "poststop")),
},
Timeout: &timeout,
})
g.SetProcessArgs([]string{"true"})
config := util.LifecycleConfig{
BundleDir: bundleDir,
Config: g,
Actions: util.LifecycleActionCreate | util.LifecycleActionStart | util.LifecycleActionDelete,
PreCreate: func(r *util.Runtime) error {
r.SetID(containerID)
return nil
},
PreDelete: func(r *util.Runtime) error {
state, err := r.State()
if err != nil {
return err
}
containerPid = state.Pid
util.WaitingForStatus(*r, util.LifecycleStatusStopped, time.Second*10, time.Second)
return nil
},
}
err = util.RuntimeLifecycleValidate(config)
if err != nil {
t.Fail(err.Error())
}
expectedState := rspecs.State{
Pid: containerPid,
ID: containerID,
Bundle: bundleDir,
Annotations: map[string]string{annotationKey: annotationValue},
}
for _, file := range []string{"prestart", "poststart", "poststop"} {
errs := stdinStateCheck(outputDir, file, expectedState)
var newError error
if errs == nil {
newError = errors.New("")
} else {
newError = errors.New(errs.Error())
}
util.SpecErrorOK(t, errs.ErrorOrNil() == nil, specerror.NewError(specerror.PosixHooksStateToStdin, fmt.Errorf("the state of the container MUST be passed to %q hook over stdin", file), rspecs.Version), newError)
}
t.AutoPlan()
}
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