Update go dependencies

vendor/sigs.k8s.io/kustomize/pkg/transformers/namespace.go

@@ -0,0 +1,121 @@
+/*
+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 transformers
+
+import (
+	"sigs.k8s.io/kustomize/pkg/gvk"
+	"sigs.k8s.io/kustomize/pkg/resmap"
+	"sigs.k8s.io/kustomize/pkg/transformers/config"
+)
+
+type namespaceTransformer struct {
+	namespace        string
+	fieldSpecsToUse  []config.FieldSpec
+	fieldSpecsToSkip []config.FieldSpec
+}
+
+var _ Transformer = &namespaceTransformer{}
+
+// NewNamespaceTransformer construct a namespaceTransformer.
+func NewNamespaceTransformer(ns string, cf []config.FieldSpec) Transformer {
+	if len(ns) == 0 {
+		return NewNoOpTransformer()
+	}
+	var skip []config.FieldSpec
+	for _, g := range gvk.ClusterLevelGvks() {
+		skip = append(skip, config.FieldSpec{Gvk: g})
+	}
+	return &namespaceTransformer{
+		namespace:        ns,
+		fieldSpecsToUse:  cf,
+		fieldSpecsToSkip: skip,
+	}
+}
+
+// Transform adds the namespace.
+func (o *namespaceTransformer) Transform(m resmap.ResMap) error {
+	mf := resmap.ResMap{}
+
+	for id := range m {
+		found := false
+		for _, path := range o.fieldSpecsToSkip {
+			if id.Gvk().IsSelected(&path.Gvk) {
+				found = true
+				break
+			}
+		}
+		if !found {
+			mf[id] = m[id]
+			delete(m, id)
+		}
+	}
+
+	for id := range mf {
+		objMap := mf[id].Map()
+		for _, path := range o.fieldSpecsToUse {
+			if !id.Gvk().IsSelected(&path.Gvk) {
+				continue
+			}
+
+			err := mutateField(objMap, path.PathSlice(), path.CreateIfNotPresent, func(_ interface{}) (interface{}, error) {
+				return o.namespace, nil
+			})
+			if err != nil {
+				return err
+			}
+			newid := id.CopyWithNewNamespace(o.namespace)
+			m[newid] = mf[id]
+		}
+
+	}
+	o.updateClusterRoleBinding(m)
+	return nil
+}
+
+func (o *namespaceTransformer) updateClusterRoleBinding(m resmap.ResMap) {
+	saMap := map[string]bool{}
+	for id := range m {
+		if id.Gvk().Equals(gvk.Gvk{Version: "v1", Kind: "ServiceAccount"}) {
+			saMap[id.Name()] = true
+		}
+	}
+
+	for id := range m {
+		if id.Gvk().Kind != "ClusterRoleBinding" && id.Gvk().Kind != "RoleBinding" {
+			continue
+		}
+		objMap := m[id].Map()
+		subjects := objMap["subjects"].([]interface{})
+		for i := range subjects {
+			subject := subjects[i].(map[string]interface{})
+			kind, foundk := subject["kind"]
+			name, foundn := subject["name"]
+			if !foundk || !foundn || kind.(string) != "ServiceAccount" {
+				continue
+			}
+			// a ServiceAccount named “default” exists in every active namespace
+			if name.(string) == "default" || saMap[name.(string)] {
+				subject := subjects[i].(map[string]interface{})
+				mutateField(subject, []string{"namespace"}, true, func(_ interface{}) (interface{}, error) {
+					return o.namespace, nil
+				})
+				subjects[i] = subject
+			}
+		}
+		objMap["subjects"] = subjects
+	}
+}