update vendor

Signed-off-by: Roland.Ma <rolandma@yunify.com>

vendor/sigs.k8s.io/kustomize/api/hasher/hasher.go

@@ -0,0 +1,155 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package hasher
+
+import (
+	"crypto/sha256"
+	"encoding/json"
+	"fmt"
+	"sort"
+
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+// SortArrayAndComputeHash sorts a string array and
+// returns a hash for it
+func SortArrayAndComputeHash(s []string) (string, error) {
+	sort.Strings(s)
+	data, err := json.Marshal(s)
+	if err != nil {
+		return "", err
+	}
+	return encode(hex256(string(data)))
+}
+
+// Copied from https://github.com/kubernetes/kubernetes
+// /blob/master/pkg/kubectl/util/hash/hash.go
+func encode(hex string) (string, error) {
+	if len(hex) < 10 {
+		return "", fmt.Errorf(
+			"input length must be at least 10")
+	}
+	enc := []rune(hex[:10])
+	for i := range enc {
+		switch enc[i] {
+		case '0':
+			enc[i] = 'g'
+		case '1':
+			enc[i] = 'h'
+		case '3':
+			enc[i] = 'k'
+		case 'a':
+			enc[i] = 'm'
+		case 'e':
+			enc[i] = 't'
+		}
+	}
+	return string(enc), nil
+}
+
+// hex256 returns the hex form of the sha256 of the argument.
+func hex256(data string) string {
+	return fmt.Sprintf("%x", sha256.Sum256([]byte(data)))
+}
+
+// Hasher computes the hash of an RNode.
+type Hasher struct{}
+
+// Hash returns a hash of the argument.
+func (h *Hasher) Hash(node *yaml.RNode) (r string, err error) {
+	var encoded string
+	switch node.GetKind() {
+	case "ConfigMap":
+		encoded, err = encodeConfigMap(node)
+	case "Secret":
+		encoded, err = encodeSecret(node)
+	default:
+		var encodedBytes []byte
+		encodedBytes, err = json.Marshal(node.YNode())
+		encoded = string(encodedBytes)
+	}
+	if err != nil {
+		return "", err
+	}
+	return encode(hex256(encoded))
+}
+
+func getNodeValues(
+	node *yaml.RNode, paths []string) (map[string]interface{}, error) {
+	values := make(map[string]interface{})
+	for _, p := range paths {
+		vn, err := node.Pipe(yaml.Lookup(p))
+		if err != nil {
+			return map[string]interface{}{}, err
+		}
+		if vn == nil {
+			values[p] = ""
+			continue
+		}
+		if vn.YNode().Kind != yaml.ScalarNode {
+			vs, err := vn.MarshalJSON()
+			if err != nil {
+				return map[string]interface{}{}, err
+			}
+			// data, binaryData and stringData are all maps
+			var v map[string]interface{}
+			json.Unmarshal(vs, &v)
+			values[p] = v
+		} else {
+			values[p] = vn.YNode().Value
+		}
+	}
+	return values, nil
+}
+
+// encodeConfigMap encodes a ConfigMap.
+// Data, Kind, and Name are taken into account.
+// BinaryData is included if it's not empty to avoid useless key in output.
+func encodeConfigMap(node *yaml.RNode) (string, error) {
+	// get fields
+	paths := []string{"metadata/name", "data", "binaryData"}
+	values, err := getNodeValues(node, paths)
+	if err != nil {
+		return "", err
+	}
+	m := map[string]interface{}{
+		"kind": "ConfigMap",
+		"name": values["metadata/name"],
+		"data": values["data"],
+	}
+	if _, ok := values["binaryData"].(map[string]interface{}); ok {
+		m["binaryData"] = values["binaryData"]
+	}
+
+	// json.Marshal sorts the keys in a stable order in the encoding
+	data, err := json.Marshal(m)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+// encodeSecret encodes a Secret.
+// Data, Kind, Name, and Type are taken into account.
+// StringData is included if it's not empty to avoid useless key in output.
+func encodeSecret(node *yaml.RNode) (string, error) {
+	// get fields
+	paths := []string{"type", "metadata/name", "data", "stringData"}
+	values, err := getNodeValues(node, paths)
+	if err != nil {
+		return "", err
+	}
+	m := map[string]interface{}{"kind": "Secret", "type": values["type"],
+		"name": values["metadata/name"], "data": values["data"]}
+	if _, ok := values["stringData"].(map[string]interface{}); ok {
+		m["stringData"] = values["stringData"]
+	}
+
+	// json.Marshal sorts the keys in a stable order in the encoding
+	data, err := json.Marshal(m)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}