Add helper library for CRDs (#977)

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

api/crds/lib.go

@@ -0,0 +1,46 @@
+/*
+Copyright The Stash 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 crds
+
+import (
+	"fmt"
+
+	apiextensions "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/yaml"
+)
+
+func CustomResourceDefinition(gvr schema.GroupVersionResource) (*apiextensions.CustomResourceDefinition, error) {
+	data, err := Asset(fmt.Sprintf("%s_%s.yaml", gvr.Group, gvr.Resource))
+	if err != nil {
+		return nil, err
+	}
+	var out apiextensions.CustomResourceDefinition
+	err = yaml.Unmarshal(data, &out)
+	if err != nil {
+		return nil, err
+	}
+	return &out, nil
+}
+
+func MustCustomResourceDefinition(gvr schema.GroupVersionResource) *apiextensions.CustomResourceDefinition {
+	out, err := CustomResourceDefinition(gvr)
+	if err != nil {
+		panic(err)
+	}
+	return out
+}

apis/constants.go

@@ -13,6 +13,7 @@ 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 apis
 
 const (

apis/repositories/v1alpha1/generated.pb.go

@@ -13,6 +13,7 @@ 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 stash
 
 // GroupName is the group name use in this package

apis/repositories/v1alpha1/generated.proto

@@ -13,6 +13,7 @@ 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 v1alpha1
 
 const (

apis/stash/register.go

@@ -13,19 +13,15 @@ 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 v1alpha1
 
 import (
 	"stash.appscode.dev/stash/api/crds"
 
 	apiextensions "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
-	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
-	"sigs.k8s.io/yaml"
 )
 
 func (_ Recovery) CustomResourceDefinition() *apiextensions.CustomResourceDefinition {
-	data := crds.MustAsset("stash.appscode.com_recoveries.yaml")
-	var out apiextensions.CustomResourceDefinition
-	utilruntime.Must(yaml.Unmarshal(data, &out))
-	return &out
+	return crds.MustCustomResourceDefinition(SchemeGroupVersion.WithResource(ResourcePluralRecovery))
 }

apis/stash/v1alpha1/annotations.go

@@ -13,6 +13,7 @@ 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 v1alpha1
 
 import (