monitoring dashboard dependency vendor

Signed-off-by: junotx <junotx@126.com>

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

@@ -0,0 +1,95 @@
+/*
+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 (
+	"fmt"
+	"sigs.k8s.io/kustomize/pkg/resource"
+
+	"sigs.k8s.io/kustomize/pkg/resmap"
+)
+
+// multiTransformer contains a list of transformers.
+type multiTransformer struct {
+	transformers         []Transformer
+	checkConflictEnabled bool
+	rf                   *resource.Factory
+}
+
+var _ Transformer = &multiTransformer{}
+
+// NewMultiTransformer constructs a multiTransformer.
+func NewMultiTransformer(t []Transformer) Transformer {
+	r := &multiTransformer{
+		transformers:         make([]Transformer, len(t)),
+		checkConflictEnabled: false}
+	copy(r.transformers, t)
+	return r
+}
+
+// NewMultiTransformerWithConflictCheck constructs a multiTransformer with checking of conflicts.
+func NewMultiTransformerWithConflictCheck(t []Transformer) Transformer {
+	r := &multiTransformer{
+		transformers:         make([]Transformer, len(t)),
+		checkConflictEnabled: true}
+	copy(r.transformers, t)
+	return r
+}
+
+// Transform prepends the name prefix.
+func (o *multiTransformer) Transform(m resmap.ResMap) error {
+	if o.checkConflictEnabled {
+		return o.transformWithCheckConflict(m)
+	}
+	return o.transform(m)
+}
+func (o *multiTransformer) transform(m resmap.ResMap) error {
+	for _, t := range o.transformers {
+		err := t.Transform(m)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Of the len(o.transformers)! possible transformer orderings, compare to a reversed order.
+// A spot check to perform when the transformations are supposed to be commutative.
+// Fail if there's a difference in the result.
+func (o *multiTransformer) transformWithCheckConflict(m resmap.ResMap) error {
+	mcopy := m.DeepCopy(o.rf)
+	err := o.transform(m)
+	if err != nil {
+		return err
+	}
+	o.reverseTransformers()
+	err = o.transform(mcopy)
+	if err != nil {
+		return err
+	}
+	err = m.ErrorIfNotEqual(mcopy)
+	if err != nil {
+		return fmt.Errorf("found conflict between different patches\n%v", err)
+	}
+	return nil
+}
+
+func (o *multiTransformer) reverseTransformers() {
+	for i, j := 0, len(o.transformers)-1; i < j; i, j = i+1, j-1 {
+		o.transformers[i], o.transformers[j] = o.transformers[j], o.transformers[i]
+	}
+}