func roundTrip(t *testing.T, codec runtime.Codec, item runtime.Object) {
printer := spew.ConfigState{DisableMethods: true}
gvk, err := api.Scheme.ObjectKind(item)
t.Logf("fully qualified kind for %v is %v with codec %v", reflect.TypeOf(item), gvk, codec)
name := reflect.TypeOf(item).Elem().Name()
data, err := codec.Encode(item)
if err != nil {
t.Errorf("%v: %v (%s)", name, err, printer.Sprintf("%#v", item))
return
}
obj2, err := codec.Decode(data)
if err != nil {
t.Errorf("0: %v: %v\nCodec: %v\nData: %s\nSource: %#v", name, err, codec, string(data), printer.Sprintf("%#v", item))
return
}
if !api.Semantic.DeepEqual(item, obj2) {
t.Errorf("\n1: %v: diff: %v\nCodec: %v\nSource:\n\n%#v\n\nEncoded:\n\n%s\n\nFinal:\n\n%#v", name, util.ObjectGoPrintDiff(item, obj2), codec, printer.Sprintf("%#v", item), string(data), printer.Sprintf("%#v", obj2))
return
}
obj3 := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
err = codec.DecodeInto(data, obj3)
if err != nil {
t.Errorf("2: %v: %v", name, err)
return
}
if !api.Semantic.DeepEqual(item, obj3) {
t.Errorf("3: %v: diff: %v\nCodec: %v", name, util.ObjectDiff(item, obj3), codec)
return
}
}
// EncodeDeploymentConfig encodes config as a string using codec.
func EncodeDeploymentConfig(config *deployapi.DeploymentConfig, codec runtime.Codec) (string, error) {
if bytes, err := codec.Encode(config); err == nil {
return string(bytes[:]), nil
} else {
return "", err
}
}
func HashObject(obj runtime.Object, codec runtime.Codec) (string, error) {
data, err := codec.Encode(obj)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", md5.Sum(data)), nil
}
func DecodeFromPathInto(obj runtime.Object, c runtime.Codec, filename string) error {
b, err := ioutil.ReadFile(filename)
c = runtime.YAMLDecoder(c)
if err != nil {
return err
}
return c.DecodeInto(b, obj)
}
// Object converts a watch.Event into an appropriately serializable JSON object
func Object(codec runtime.Codec, event *watch.Event) (interface{}, error) {
obj, ok := event.Object.(runtime.Object)
if !ok {
return nil, fmt.Errorf("the event object cannot be safely converted to JSON: %v", reflect.TypeOf(event.Object).Name())
}
data, err := codec.Encode(obj)
if err != nil {
return nil, err
}
return &WatchEvent{event.Type, runtime.RawExtension{RawJSON: json.RawMessage(data)}}, nil
}
func prettyJSON(codec runtime.Codec, object runtime.Object, w http.ResponseWriter) {
formatted := &bytes.Buffer{}
output, err := codec.Encode(object)
if err != nil {
errorJSONFatal(err, codec, w)
}
if err := json.Indent(formatted, output, "", " "); err != nil {
errorJSONFatal(err, codec, w)
return
}
w.Write(formatted.Bytes())
}
// decode decodes value of bytes into object. It will also set the object resource version to rev.
// On success, objPtr would be set to the object.
func decode(codec runtime.Codec, versioner storage.Versioner, value []byte, objPtr runtime.Object, rev int64) error {
if _, err := conversion.EnforcePtr(objPtr); err != nil {
panic("unable to convert output object to pointer")
}
_, _, err := codec.Decode(value, nil, objPtr)
if err != nil {
return err
}
// being unable to set the version does not prevent the object from being extracted
versioner.UpdateObject(objPtr, uint64(rev))
return nil
}
// DecodeDeploymentConfig decodes a DeploymentConfig from controller using codec. An error is returned
// if the controller doesn't contain an encoded config.
func DecodeDeploymentConfig(controller *api.ReplicationController, codec runtime.Codec) (*deployapi.DeploymentConfig, error) {
encodedConfig := []byte(EncodedDeploymentConfigFor(controller))
if decoded, err := codec.Decode(encodedConfig); err == nil {
if config, ok := decoded.(*deployapi.DeploymentConfig); ok {
return config, nil
} else {
return nil, fmt.Errorf("decoded DeploymentConfig from controller is not a DeploymentConfig: %v", err)
}
} else {
return nil, fmt.Errorf("failed to decode DeploymentConfig from controller: %v", err)
}
}
func readOrDie(t *testing.T, req *http.Request, codec runtime.Codec) runtime.Object {
data, err := ioutil.ReadAll(req.Body)
if err != nil {
t.Errorf("Error reading: %v", err)
t.FailNow()
}
obj, err := codec.Decode(data)
if err != nil {
t.Errorf("error decoding: %v", err)
t.FailNow()
}
return obj
}
// errorJSONFatal renders an error to the response, and if codec fails will render plaintext.
// Returns the HTTP status code of the error.
func errorJSONFatal(err error, codec runtime.Codec, w http.ResponseWriter) int {
util.HandleError(fmt.Errorf("apiserver was unable to write a JSON response: %v", err))
status := errToAPIStatus(err)
output, err := codec.Encode(status)
if err != nil {
w.WriteHeader(status.Code)
fmt.Fprintf(w, "%s: %s", status.Reason, status.Message)
return status.Code
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(status.Code)
w.Write(output)
return status.Code
}
// writeJSON renders an object as JSON to the response.
func writeJSON(statusCode int, codec runtime.Codec, object runtime.Object, w http.ResponseWriter, pretty bool) {
w.Header().Set("Content-Type", "application/json")
// We send the status code before we encode the object, so if we error, the status code stays but there will
// still be an error object. This seems ok, the alternative is to validate the object before
// encoding, but this really should never happen, so it's wasted compute for every API request.
w.WriteHeader(statusCode)
if pretty {
prettyJSON(codec, object, w)
return
}
err := codec.EncodeToStream(object, w)
if err != nil {
errorJSONFatal(err, codec, w)
}
}
// decodeList decodes a list of values into a list of objects, with resource version set to corresponding rev.
// On success, ListPtr would be set to the list of objects.
func decodeList(elems []*elemForDecode, filter storage.FilterFunc, ListPtr interface{}, codec runtime.Codec, versioner storage.Versioner) error {
v, err := conversion.EnforcePtr(ListPtr)
if err != nil || v.Kind() != reflect.Slice {
panic("need ptr to slice")
}
for _, elem := range elems {
obj, _, err := codec.Decode(elem.data, nil, reflect.New(v.Type().Elem()).Interface().(runtime.Object))
if err != nil {
return err
}
// being unable to set the version does not prevent the object from being extracted
versioner.UpdateObject(obj, elem.rev)
if filter(obj) {
v.Set(reflect.Append(v, reflect.ValueOf(obj).Elem()))
}
}
return nil
}
// writeJSON renders an object as JSON to the response.
func writeJSON(statusCode int, codec runtime.Codec, object runtime.Object, w http.ResponseWriter, pretty bool) {
output, err := codec.Encode(object)
if err != nil {
errorJSONFatal(err, codec, w)
return
}
if pretty {
// PR #2243: Pretty-print JSON by default.
formatted := &bytes.Buffer{}
err = json.Indent(formatted, output, "", " ")
if err != nil {
errorJSONFatal(err, codec, w)
return
}
output = formatted.Bytes()
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(statusCode)
w.Write(output)
}
func roundTrip(t *testing.T, codec runtime.Codec, originalItem runtime.Object) {
// Make a copy of the originalItem to give to conversion functions
// This lets us know if conversion messed with the input object
deepCopy, err := api.Scheme.DeepCopy(originalItem)
if err != nil {
t.Errorf("Could not copy object: %v", err)
return
}
item := deepCopy.(runtime.Object)
name := reflect.TypeOf(item).Elem().Name()
data, err := codec.Encode(item)
if err != nil {
if conversion.IsNotRegisteredError(err) {
t.Logf("%v is not registered", name)
return
}
t.Errorf("%v: %v (%#v)", name, err, item)
return
}
obj2, err := codec.Decode(data)
if err != nil {
t.Errorf("0: %v: %v\nCodec: %v\nData: %s\nSource: %#v", name, err, codec, string(data), originalItem)
return
}
if reflect.TypeOf(item) != reflect.TypeOf(obj2) {
obj2conv := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
if err := api.Scheme.Convert(obj2, obj2conv); err != nil {
t.Errorf("0X: no conversion from %v to %v: %v", reflect.TypeOf(item), reflect.TypeOf(obj2), err)
return
}
obj2 = obj2conv
}
if !api.Semantic.DeepEqual(originalItem, obj2) {
t.Errorf("1: %v: diff: %v\nCodec: %v\nData: %s\nSource: %s", name, util.ObjectDiff(originalItem, obj2), codec, string(data), util.ObjectGoPrintSideBySide(originalItem, obj2))
return
}
obj3 := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
err = codec.DecodeInto(data, obj3)
if err != nil {
t.Errorf("2: %v: %v", name, err)
return
}
if !api.Semantic.DeepEqual(originalItem, obj3) {
t.Errorf("3: %v: diff: %v\nCodec: %v", name, util.ObjectDiff(originalItem, obj3), codec)
return
}
}
// patchResource divides PatchResource for easier unit testing
func patchResource(ctx api.Context, timeout time.Duration, versionedObj runtime.Object, patcher rest.Patcher, name string, patchType api.PatchType, patchJS []byte, namer ScopeNamer, codec runtime.Codec) (runtime.Object, error) {
namespace := api.NamespaceValue(ctx)
original, err := patcher.Get(ctx, name)
if err != nil {
return nil, err
}
originalObjJS, err := codec.Encode(original)
if err != nil {
return nil, err
}
originalPatchedObjJS, err := getPatchedJS(patchType, originalObjJS, patchJS, versionedObj)
if err != nil {
return nil, err
}
objToUpdate := patcher.New()
if err := codec.DecodeInto(originalPatchedObjJS, objToUpdate); err != nil {
return nil, err
}
if err := checkName(objToUpdate, name, namespace, namer); err != nil {
return nil, err
}
return finishRequest(timeout, func() (runtime.Object, error) {
// update should never create as previous get would fail
updateObject, _, updateErr := patcher.Update(ctx, objToUpdate)
for i := 0; i < MaxPatchConflicts && (errors.IsConflict(updateErr)); i++ {
// on a conflict,
// 1. build a strategic merge patch from originalJS and the patchedJS. Different patch types can
// be specified, but a strategic merge patch should be expressive enough handle them. Build the
// patch with this type to handle those cases.
// 2. build a strategic merge patch from originalJS and the currentJS
// 3. ensure no conflicts between the two patches
// 4. apply the #1 patch to the currentJS object
// 5. retry the update
currentObject, err := patcher.Get(ctx, name)
if err != nil {
return nil, err
}
currentObjectJS, err := codec.Encode(currentObject)
if err != nil {
return nil, err
}
currentPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, currentObjectJS, patcher.New())
if err != nil {
return nil, err
}
originalPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, originalPatchedObjJS, patcher.New())
if err != nil {
return nil, err
}
diff1 := make(map[string]interface{})
if err := json.Unmarshal(originalPatch, &diff1); err != nil {
return nil, err
}
diff2 := make(map[string]interface{})
if err := json.Unmarshal(currentPatch, &diff2); err != nil {
return nil, err
}
hasConflicts, err := strategicpatch.HasConflicts(diff1, diff2)
if err != nil {
return nil, err
}
if hasConflicts {
return updateObject, updateErr
}
newlyPatchedObjJS, err := getPatchedJS(api.StrategicMergePatchType, currentObjectJS, originalPatch, versionedObj)
if err != nil {
return nil, err
}
if err := codec.DecodeInto(newlyPatchedObjJS, objToUpdate); err != nil {
return nil, err
}
updateObject, _, updateErr = patcher.Update(ctx, objToUpdate)
}
return updateObject, updateErr
})
}