Bumping k8s version to 1.13.0-beta.1

vendor/k8s.io/apiextensions-apiserver/pkg/apiserver/helpers.go

@@ -0,0 +1,117 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package apiserver
+
+import (
+	"fmt"
+
+	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions"
+)
+
+// getSchemaForVersion returns the validation schema for given version in given CRD.
+func getSchemaForVersion(crd *apiextensions.CustomResourceDefinition, version string) (*apiextensions.CustomResourceValidation, error) {
+	if !hasPerVersionSchema(crd.Spec.Versions) {
+		return crd.Spec.Validation, nil
+	}
+	if crd.Spec.Validation != nil {
+		return nil, fmt.Errorf("malformed CustomResourceDefinition %s version %s: top-level and per-version schemas must be mutual exclusive", crd.Name, version)
+	}
+	for _, v := range crd.Spec.Versions {
+		if version == v.Name {
+			return v.Schema, nil
+		}
+	}
+	return nil, fmt.Errorf("version %s not found in CustomResourceDefinition: %v", version, crd.Name)
+}
+
+// getSubresourcesForVersion returns the subresources for given version in given CRD.
+func getSubresourcesForVersion(crd *apiextensions.CustomResourceDefinition, version string) (*apiextensions.CustomResourceSubresources, error) {
+	if !hasPerVersionSubresources(crd.Spec.Versions) {
+		return crd.Spec.Subresources, nil
+	}
+	if crd.Spec.Subresources != nil {
+		return nil, fmt.Errorf("malformed CustomResourceDefinition %s version %s: top-level and per-version subresources must be mutual exclusive", crd.Name, version)
+	}
+	for _, v := range crd.Spec.Versions {
+		if version == v.Name {
+			return v.Subresources, nil
+		}
+	}
+	return nil, fmt.Errorf("version %s not found in CustomResourceDefinition: %v", version, crd.Name)
+}
+
+// getColumnsForVersion returns the columns for given version in given CRD.
+// NOTE: the newly logically-defaulted columns is not pointing to the original CRD object.
+// One cannot mutate the original CRD columns using the logically-defaulted columns. Please iterate through
+// the original CRD object instead.
+func getColumnsForVersion(crd *apiextensions.CustomResourceDefinition, version string) ([]apiextensions.CustomResourceColumnDefinition, error) {
+	if !hasPerVersionColumns(crd.Spec.Versions) {
+		return serveDefaultColumnsIfEmpty(crd.Spec.AdditionalPrinterColumns), nil
+	}
+	if len(crd.Spec.AdditionalPrinterColumns) > 0 {
+		return nil, fmt.Errorf("malformed CustomResourceDefinition %s version %s: top-level and per-version additionalPrinterColumns must be mutual exclusive", crd.Name, version)
+	}
+	for _, v := range crd.Spec.Versions {
+		if version == v.Name {
+			return serveDefaultColumnsIfEmpty(v.AdditionalPrinterColumns), nil
+		}
+	}
+	return nil, fmt.Errorf("version %s not found in CustomResourceDefinition: %v", version, crd.Name)
+}
+
+// serveDefaultColumnsIfEmpty applies logically defaulting to columns, if the input columns is empty.
+// NOTE: in this way, the newly logically-defaulted columns is not pointing to the original CRD object.
+// One cannot mutate the original CRD columns using the logically-defaulted columns. Please iterate through
+// the original CRD object instead.
+func serveDefaultColumnsIfEmpty(columns []apiextensions.CustomResourceColumnDefinition) []apiextensions.CustomResourceColumnDefinition {
+	if len(columns) > 0 {
+		return columns
+	}
+	return []apiextensions.CustomResourceColumnDefinition{
+		{Name: "Age", Type: "date", Description: swaggerMetadataDescriptions["creationTimestamp"], JSONPath: ".metadata.creationTimestamp"},
+	}
+}
+
+// hasPerVersionSchema returns true if a CRD uses per-version schema.
+func hasPerVersionSchema(versions []apiextensions.CustomResourceDefinitionVersion) bool {
+	for _, v := range versions {
+		if v.Schema != nil {
+			return true
+		}
+	}
+	return false
+}
+
+// hasPerVersionSubresources returns true if a CRD uses per-version subresources.
+func hasPerVersionSubresources(versions []apiextensions.CustomResourceDefinitionVersion) bool {
+	for _, v := range versions {
+		if v.Subresources != nil {
+			return true
+		}
+	}
+	return false
+}
+
+// hasPerVersionColumns returns true if a CRD uses per-version columns.
+func hasPerVersionColumns(versions []apiextensions.CustomResourceDefinitionVersion) bool {
+	for _, v := range versions {
+		if len(v.AdditionalPrinterColumns) > 0 {
+			return true
+		}
+	}
+	return false
+}