etcd: Replace ghodss/yaml with sigs.k8s.io/yaml

To remove the dependency on ghodss/yaml. Replaced this dependency with sigs.k8s.io/yaml.
This wil help to remove the ghodss/yaml dependency from main kubernetes repository.

xref: https://github.com/kubernetes/kubernetes/issues/77024

bill-of-materials.json

@@ -62,15 +62,6 @@
 			}
 		]
 	},
-	{
-		"project": "github.com/ghodss/yaml",
-		"licenses": [
-			{
-				"type": "MIT License and BSD 3-clause \"New\" or \"Revised\" License",
-				"confidence": 1
-			}
-		]
-	},
 	{
 		"project": "github.com/gogo/protobuf",
 		"licenses": [
@@ -452,5 +443,14 @@
 				"confidence": 0.8975609756097561
 			}
 		]
+	},
+	{
+		"project": "sigs.k8s.io/yaml",
+		"licenses": [
+			{
+				"type": "BSD 3-clause \"New\" or \"Revised\" License",
+				"confidence": 1
+			}
+		]
 	}
 ]

bill-of-materials.override.json

@@ -1,9 +1,9 @@
 [
 	{
-		"project": "github.com/ghodss/yaml",
+		"project": "sigs.k8s.io/yaml",
 		"licenses": [
 			{
-				"type": "MIT License and BSD 3-clause \"New\" or \"Revised\" License"
+				"type": "BSD 3-clause \"New\" or \"Revised\" License"
 			}
 		]
 	},

clientv3/yaml/config.go

@@ -20,7 +20,7 @@ import (
 	"crypto/x509"
 	"io/ioutil"
 
-	"github.com/ghodss/yaml"
+	"sigs.k8s.io/yaml"
 
 	"go.etcd.io/etcd/v3/clientv3"
 	"go.etcd.io/etcd/v3/pkg/tlsutil"

clientv3/yaml/config_test.go

@@ -21,7 +21,7 @@ import (
 	"reflect"
 	"testing"
 
-	"github.com/ghodss/yaml"
+	"sigs.k8s.io/yaml"
 )
 
 var (

embed/config.go

@@ -36,12 +36,12 @@ import (
 	"go.etcd.io/etcd/v3/pkg/transport"
 	"go.etcd.io/etcd/v3/pkg/types"
 
-	"github.com/ghodss/yaml"
 	bolt "go.etcd.io/bbolt"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 	"golang.org/x/crypto/bcrypt"
 	"google.golang.org/grpc"
+	"sigs.k8s.io/yaml"
 )
 
 const (

embed/config_test.go

@@ -24,7 +24,7 @@ import (
 
 	"go.etcd.io/etcd/v3/pkg/transport"
 
-	"github.com/ghodss/yaml"
+	"sigs.k8s.io/yaml"
 )
 
 func TestConfigFileOtherFields(t *testing.T) {

etcdmain/config.go

@@ -31,8 +31,8 @@ import (
 	"go.etcd.io/etcd/v3/pkg/types"
 	"go.etcd.io/etcd/v3/version"
 
-	"github.com/ghodss/yaml"
 	"go.uber.org/zap"
+	"sigs.k8s.io/yaml"
 )
 
 var (

etcdmain/config_test.go

@@ -23,8 +23,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/ghodss/yaml"
 	"go.etcd.io/etcd/v3/embed"
+	"sigs.k8s.io/yaml"
 )
 
 func TestConfigParsingMemberFlags(t *testing.T) {

go.mod

@@ -10,7 +10,6 @@ require (
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4
 	github.com/fatih/color v1.7.0 // indirect
-	github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32
 	github.com/gogo/protobuf v1.0.0
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
 	github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903
@@ -60,4 +59,5 @@ require (
 	gopkg.in/cheggaaa/pb.v1 v1.0.25
 	gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2 // indirect
 	gopkg.in/yaml.v2 v2.2.2
+	sigs.k8s.io/yaml v1.1.0
 )

go.sum

@@ -18,8 +18,6 @@ github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32 h1:Mn26/9ZMNWSw9C9ERFA1PUxfmGpolnw2v0bKOREu5ew=
-github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32/go.mod h1:GIjDIg/heH5DOkXY3YJ/wNhfHsQHoXGjl8G8amsYQ1I=
 github.com/gogo/protobuf v1.0.0 h1:2jyBKDKU/8v3v2xVR2PtiWQviFUyiaGk2rpfyFT8rTM=
 github.com/gogo/protobuf v1.0.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
@@ -135,3 +133,5 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+sigs.k8s.io/yaml v1.1.0 h1:4A07+ZFc2wgJwo8YNlQpr1rVlgUDlxXHhPJciaPY5gs=
+sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=

vendor/sigs.k8s.io/yaml/fields.go

@@ -1,6 +1,7 @@
 // Copyright 2013 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
+
 package yaml
 
 import (

vendor/sigs.k8s.io/yaml/yaml.go

@@ -1,14 +1,4 @@
-// Package yaml provides a wrapper around go-yaml designed to enable a better
-// way of handling YAML when marshaling to and from structs.
-//
-// In short, this package first converts YAML to JSON using go-yaml and then
-// uses json.Marshal and json.Unmarshal to convert to or from the struct. This
-// means that it effectively reuses the JSON struct tags as well as the custom
-// JSON methods MarshalJSON and UnmarshalJSON unlike go-yaml.
-//
-// See also http://ghodss.com/2014/the-right-way-to-handle-yaml-in-golang
-//
-package yaml  // import "github.com/ghodss/yaml"
+package yaml
 
 import (
 	"bytes"
@@ -21,7 +11,7 @@ import (
 	"gopkg.in/yaml.v2"
 )
 
-// Marshals the object into JSON then converts JSON to YAML and returns the
+// Marshal marshals the object into JSON then converts JSON to YAML and returns the
 // YAML.
 func Marshal(o interface{}) ([]byte, error) {
 	j, err := json.Marshal(o)
@@ -43,19 +33,24 @@ type JSONOpt func(*json.Decoder) *json.Decoder
 // Unmarshal converts YAML to JSON then uses JSON to unmarshal into an object,
 // optionally configuring the behavior of the JSON unmarshal.
 func Unmarshal(y []byte, o interface{}, opts ...JSONOpt) error {
-	return unmarshal(yaml.Unmarshal, y, o, opts)
+	return yamlUnmarshal(y, o, false, opts...)
 }
 
-// UnmarshalStrict is like Unmarshal except that any mapping keys that are
-// duplicates will result in an error.
-// To also be strict about unknown fields, add the DisallowUnknownFields option.
+// UnmarshalStrict strictly converts YAML to JSON then uses JSON to unmarshal
+// into an object, optionally configuring the behavior of the JSON unmarshal.
 func UnmarshalStrict(y []byte, o interface{}, opts ...JSONOpt) error {
-	return unmarshal(yaml.UnmarshalStrict, y, o, opts)
+	return yamlUnmarshal(y, o, true, append(opts, DisallowUnknownFields)...)
 }
 
-func unmarshal(f func(in []byte, out interface{}) (err error), y []byte, o interface{}, opts []JSONOpt) error {
+// yamlUnmarshal unmarshals the given YAML byte stream into the given interface,
+// optionally performing the unmarshalling strictly
+func yamlUnmarshal(y []byte, o interface{}, strict bool, opts ...JSONOpt) error {
 	vo := reflect.ValueOf(o)
-	j, err := yamlToJSON(y, &vo, f)
+	unmarshalFn := yaml.Unmarshal
+	if strict {
+		unmarshalFn = yaml.UnmarshalStrict
+	}
+	j, err := yamlToJSON(y, &vo, unmarshalFn)
 	if err != nil {
 		return fmt.Errorf("error converting YAML to JSON: %v", err)
 	}
@@ -83,7 +78,7 @@ func jsonUnmarshal(r io.Reader, o interface{}, opts ...JSONOpt) error {
 	return nil
 }
 
-// Convert JSON to YAML.
+// JSONToYAML Converts JSON to YAML.
 func JSONToYAML(j []byte) ([]byte, error) {
 	// Convert the JSON to an object.
 	var jsonObj interface{}
@@ -134,7 +129,7 @@ func yamlToJSON(y []byte, jsonTarget *reflect.Value, yamlUnmarshal func([]byte,
 	// YAML objects are not completely compatible with JSON objects (e.g. you
 	// can have non-string keys in YAML). So, convert the YAML-compatible object
 	// to a JSON-compatible object, failing with an error if irrecoverable
-	// incompatibilities happen along the way.
+	// incompatibilties happen along the way.
 	jsonObj, err := convertToJSONableObject(yamlObj, jsonTarget)
 	if err != nil {
 		return nil, err
@@ -321,6 +316,4 @@ func convertToJSONableObject(yamlObj interface{}, jsonTarget *reflect.Value) (in
 		}
 		return yamlObj, nil
 	}
-
-	return nil, nil
 }