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apiextensions: unify webhook conversion error messages

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This commit is contained in:
Dr. Stefan Schimanski 2019-05-30 19:02:13 +02:00
parent 6d70e7ff01
commit 24a9581f1c
2 changed files with 18 additions and 19 deletions
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35
staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/conversion/webhook_converter.go
View File

@ -184,21 +184,20 @@ func (c *webhookConverter) Convert(in runtime.Object, toGV schema.GroupVersion)
r := c.restClient.Post().Context(ctx).Body(request).Do() r := c.restClient.Post().Context(ctx).Body(request).Do()
if err := r.Into(response); err != nil { if err := r.Into(response); err != nil {
// TODO: Return a webhook specific error to be able to convert it to meta.Status // TODO: Return a webhook specific error to be able to convert it to meta.Status
return nil, fmt.Errorf("calling to conversion webhook failed for %s: %v", c.name, err) return nil, fmt.Errorf("conversion webhook for %v failed: %v", in.GetObjectKind(), err)
} }
if response.Response == nil { if response.Response == nil {
// TODO: Return a webhook specific error to be able to convert it to meta.Status // TODO: Return a webhook specific error to be able to convert it to meta.Status
return nil, fmt.Errorf("conversion webhook response was absent for %s", c.name) return nil, fmt.Errorf("conversion webhook for %v lacked response", in.GetObjectKind())
} }
if response.Response.Result.Status != v1.StatusSuccess { if response.Response.Result.Status != v1.StatusSuccess {
// TODO return status message as error return nil, fmt.Errorf("conversion webhook for %v failed: %v", in.GetObjectKind(), response.Response.Result.Message)
return nil, fmt.Errorf("conversion request failed for %v, Response: %v", in.GetObjectKind(), response)
} }
if len(response.Response.ConvertedObjects) != len(request.Request.Objects) { if len(response.Response.ConvertedObjects) != len(request.Request.Objects) {
return nil, fmt.Errorf("expected %v converted objects, got %v", len(request.Request.Objects), len(response.Response.ConvertedObjects)) return nil, fmt.Errorf("conversion webhook for %v returned %d objects, expected %d", in.GetObjectKind(), len(response.Response.ConvertedObjects), len(request.Request.Objects))
} }
if isList { if isList {
@ -215,25 +214,25 @@ func (c *webhookConverter) Convert(in runtime.Object, toGV schema.GroupVersion)
} }
converted, err := getRawExtensionObject(response.Response.ConvertedObjects[convertedIndex]) converted, err := getRawExtensionObject(response.Response.ConvertedObjects[convertedIndex])
if err != nil { if err != nil {
return nil, fmt.Errorf("invalid converted object at index %v: %v", convertedIndex, err) return nil, fmt.Errorf("conversion webhook for %v returned invalid converted object at index %v: %v", in.GetObjectKind(), convertedIndex, err)
} }
convertedIndex++ convertedIndex++
if expected, got := toGV, converted.GetObjectKind().GroupVersionKind().GroupVersion(); expected != got { if expected, got := toGV, converted.GetObjectKind().GroupVersionKind().GroupVersion(); expected != got {
return nil, fmt.Errorf("invalid converted object at index %v: invalid groupVersion, expected=%v, got=%v", convertedIndex, expected, got) return nil, fmt.Errorf("conversion webhook for %v returned invalid converted object at index %v: invalid groupVersion, expected=%v, got=%v", in.GetObjectKind(), convertedIndex, expected, got)
} }
if expected, got := original.GetObjectKind().GroupVersionKind().Kind, converted.GetObjectKind().GroupVersionKind().Kind; expected != got { if expected, got := original.GetObjectKind().GroupVersionKind().Kind, converted.GetObjectKind().GroupVersionKind().Kind; expected != got {
return nil, fmt.Errorf("invalid converted object at index %v: invalid kind, expected=%v, got=%v", convertedIndex, expected, got) return nil, fmt.Errorf("conversion webhook for %v returned invalid converted object at index %v: invalid kind, expected=%v, got=%v", in.GetObjectKind(), convertedIndex, expected, got)
} }
unstructConverted, ok := converted.(*unstructured.Unstructured) unstructConverted, ok := converted.(*unstructured.Unstructured)
if !ok { if !ok {
// this should not happened // this should not happened
return nil, fmt.Errorf("invalid converted object at index %v: invalid type, expected=Unstructured, got=%T", convertedIndex, converted) return nil, fmt.Errorf("conversion webhook for %v returned invalid converted object at index %v: invalid type, expected=Unstructured, got=%T", in.GetObjectKind(), convertedIndex, converted)
} }
if err := validateConvertedObject(original, unstructConverted); err != nil { if err := validateConvertedObject(original, unstructConverted); err != nil {
return nil, fmt.Errorf("invalid converted object at index %v: %v", convertedIndex, err) return nil, fmt.Errorf("conversion webhook for %v returned invalid converted object at index %v: %v", in.GetObjectKind(), convertedIndex, err)
} }
if err := restoreObjectMeta(original, unstructConverted); err != nil { if err := restoreObjectMeta(original, unstructConverted); err != nil {
return nil, fmt.Errorf("invalid metadata in object at index %v: %v", convertedIndex, err) return nil, fmt.Errorf("conversion webhook for %v returned invalid metadata in object at index %v: %v", in.GetObjectKind(), convertedIndex, err)
} }
convertedList.Items[i] = *unstructConverted convertedList.Items[i] = *unstructConverted
} }
@ -243,33 +242,33 @@ func (c *webhookConverter) Convert(in runtime.Object, toGV schema.GroupVersion)
if len(response.Response.ConvertedObjects) != 1 { if len(response.Response.ConvertedObjects) != 1 {
// This should not happened // This should not happened
return nil, fmt.Errorf("CR conversion failed") return nil, fmt.Errorf("conversion webhook for %v failed", in.GetObjectKind())
} }
converted, err := getRawExtensionObject(response.Response.ConvertedObjects[0]) converted, err := getRawExtensionObject(response.Response.ConvertedObjects[0])
if err != nil { if err != nil {
return nil, err return nil, err
} }
if e, a := toGV, converted.GetObjectKind().GroupVersionKind().GroupVersion(); e != a { if e, a := toGV, converted.GetObjectKind().GroupVersionKind().GroupVersion(); e != a {
return nil, fmt.Errorf("invalid converted object: invalid groupVersion, e=%v, a=%v", e, a) return nil, fmt.Errorf("conversion webhook for %v returned invalid object: invalid groupVersion, e=%v, a=%v", in.GetObjectKind(), e, a)
} }
if e, a := in.GetObjectKind().GroupVersionKind().Kind, converted.GetObjectKind().GroupVersionKind().Kind; e != a { if e, a := in.GetObjectKind().GroupVersionKind().Kind, converted.GetObjectKind().GroupVersionKind().Kind; e != a {
return nil, fmt.Errorf("invalid converted object: invalid kind, e=%v, a=%v", e, a) return nil, fmt.Errorf("conversion webhook for %v returned invalid object: invalid kind, e=%v, a=%v", in.GetObjectKind(), e, a)
} }
unstructConverted, ok := converted.(*unstructured.Unstructured) unstructConverted, ok := converted.(*unstructured.Unstructured)
if !ok { if !ok {
// this should not happened // this should not happened
return nil, fmt.Errorf("CR conversion failed") return nil, fmt.Errorf("conversion webhook for %v failed", in.GetObjectKind())
} }
unstructIn, ok := in.(*unstructured.Unstructured) unstructIn, ok := in.(*unstructured.Unstructured)
if !ok { if !ok {
// this should not happened // this should not happened
return nil, fmt.Errorf("CR conversion failed") return nil, fmt.Errorf("conversion webhook for %v failed", in.GetObjectKind())
} }
if err := validateConvertedObject(unstructIn, unstructConverted); err != nil { if err := validateConvertedObject(unstructIn, unstructConverted); err != nil {
return nil, fmt.Errorf("invalid converted object: %v", err) return nil, fmt.Errorf("conversion webhook for %v returned invalid object: %v", in.GetObjectKind(), err)
} }
if err := restoreObjectMeta(unstructIn, unstructConverted); err != nil { if err := restoreObjectMeta(unstructIn, unstructConverted); err != nil {
return nil, fmt.Errorf("invalid metadata in converted object: %v", err) return nil, fmt.Errorf("conversion webhook for %v returned invalid metadata: %v", in.GetObjectKind(), err)
} }
return converted, nil return converted, nil
} }

2
staging/src/k8s.io/apiextensions-apiserver/test/integration/conversion/conversion_test.go
View File

@ -95,7 +95,7 @@ func testWebhookConverter(t *testing.T, defaulting bool) {
{ {
group: "empty-response", group: "empty-response",
handler: NewReviewWebhookHandler(t, emptyResponseConverter), handler: NewReviewWebhookHandler(t, emptyResponseConverter),
checks: checks(expectConversionFailureMessage("empty-response", "expected 1 converted objects")), checks: checks(expectConversionFailureMessage("empty-response", "returned 0 objects, expected 1")),
}, },
{ {
group: "failure-message", group: "failure-message",