Initial commit

vendor/sigs.k8s.io/controller-runtime/pkg/patch/doc.go

@@ -0,0 +1,33 @@
+/*
+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 patch provides method to calculate JSON patch between 2 k8s objects.
+
+Calculate JSON patch
+
+	oldDeployment := appsv1.Deployment{
+		// some fields
+	}
+	newDeployment := appsv1.Deployment{
+		// some different fields
+	}
+	patch, err := NewJSONPatch(oldDeployment, newDeployment)
+	if err != nil {
+		// handle error
+	}
+*/
+package patch

vendor/sigs.k8s.io/controller-runtime/pkg/patch/patch.go

@@ -0,0 +1,45 @@
+/*
+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 patch
+
+import (
+	"encoding/json"
+	"fmt"
+	"reflect"
+
+	"github.com/mattbaird/jsonpatch"
+
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+// NewJSONPatch calculates the JSON patch between original and current objects.
+func NewJSONPatch(original, current runtime.Object) ([]jsonpatch.JsonPatchOperation, error) {
+	originalGVK := original.GetObjectKind().GroupVersionKind()
+	currentGVK := current.GetObjectKind().GroupVersionKind()
+	if !reflect.DeepEqual(originalGVK, currentGVK) {
+		return nil, fmt.Errorf("GroupVersionKind %#v is expected to match %#v", originalGVK, currentGVK)
+	}
+	ori, err := json.Marshal(original)
+	if err != nil {
+		return nil, err
+	}
+	cur, err := json.Marshal(current)
+	if err != nil {
+		return nil, err
+	}
+	return jsonpatch.CreatePatch(ori, cur)
+}