TUN-3375: Upgrade coredns and prometheus dependencies

vendor/github.com/aws/aws-sdk-go/private/protocol/json/jsonutil/unmarshal.go

@@ -6,7 +6,9 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"math/big"
 	"reflect"
+	"strings"
 	"time"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -14,6 +16,8 @@ import (
 	"github.com/aws/aws-sdk-go/private/protocol"
 )
 
+var millisecondsFloat = new(big.Float).SetInt64(1e3)
+
 // UnmarshalJSONError unmarshal's the reader's JSON document into the passed in
 // type. The value to unmarshal the json document into must be a pointer to the
 // type.
@@ -38,17 +42,42 @@ func UnmarshalJSONError(v interface{}, stream io.Reader) error {
 func UnmarshalJSON(v interface{}, stream io.Reader) error {
 	var out interface{}
 
-	err := json.NewDecoder(stream).Decode(&out)
+	decoder := json.NewDecoder(stream)
+	decoder.UseNumber()
+	err := decoder.Decode(&out)
 	if err == io.EOF {
 		return nil
 	} else if err != nil {
 		return err
 	}
 
-	return unmarshalAny(reflect.ValueOf(v), out, "")
+	return unmarshaler{}.unmarshalAny(reflect.ValueOf(v), out, "")
 }
 
-func unmarshalAny(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+// UnmarshalJSONCaseInsensitive reads a stream and unmarshals the result into the
+// object v. Ignores casing for structure members.
+func UnmarshalJSONCaseInsensitive(v interface{}, stream io.Reader) error {
+	var out interface{}
+
+	decoder := json.NewDecoder(stream)
+	decoder.UseNumber()
+	err := decoder.Decode(&out)
+	if err == io.EOF {
+		return nil
+	} else if err != nil {
+		return err
+	}
+
+	return unmarshaler{
+		caseInsensitive: true,
+	}.unmarshalAny(reflect.ValueOf(v), out, "")
+}
+
+type unmarshaler struct {
+	caseInsensitive bool
+}
+
+func (u unmarshaler) unmarshalAny(value reflect.Value, data interface{}, tag reflect.StructTag) error {
 	vtype := value.Type()
 	if vtype.Kind() == reflect.Ptr {
 		vtype = vtype.Elem() // check kind of actual element type
@@ -80,17 +109,17 @@ func unmarshalAny(value reflect.Value, data interface{}, tag reflect.StructTag)
 		if field, ok := vtype.FieldByName("_"); ok {
 			tag = field.Tag
 		}
-		return unmarshalStruct(value, data, tag)
+		return u.unmarshalStruct(value, data, tag)
 	case "list":
-		return unmarshalList(value, data, tag)
+		return u.unmarshalList(value, data, tag)
 	case "map":
-		return unmarshalMap(value, data, tag)
+		return u.unmarshalMap(value, data, tag)
 	default:
-		return unmarshalScalar(value, data, tag)
+		return u.unmarshalScalar(value, data, tag)
 	}
 }
 
-func unmarshalStruct(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+func (u unmarshaler) unmarshalStruct(value reflect.Value, data interface{}, tag reflect.StructTag) error {
 	if data == nil {
 		return nil
 	}
@@ -114,7 +143,7 @@ func unmarshalStruct(value reflect.Value, data interface{}, tag reflect.StructTa
 	// unwrap any payloads
 	if payload := tag.Get("payload"); payload != "" {
 		field, _ := t.FieldByName(payload)
-		return unmarshalAny(value.FieldByName(payload), data, field.Tag)
+		return u.unmarshalAny(value.FieldByName(payload), data, field.Tag)
 	}
 
 	for i := 0; i < t.NumField(); i++ {
@@ -128,9 +157,19 @@ func unmarshalStruct(value reflect.Value, data interface{}, tag reflect.StructTa
 		if locName := field.Tag.Get("locationName"); locName != "" {
 			name = locName
 		}
+		if u.caseInsensitive {
+			if _, ok := mapData[name]; !ok {
+				// Fallback to uncased name search if the exact name didn't match.
+				for kn, v := range mapData {
+					if strings.EqualFold(kn, name) {
+						mapData[name] = v
+					}
+				}
+			}
+		}
 
 		member := value.FieldByIndex(field.Index)
-		err := unmarshalAny(member, mapData[name], field.Tag)
+		err := u.unmarshalAny(member, mapData[name], field.Tag)
 		if err != nil {
 			return err
 		}
@@ -138,7 +177,7 @@ func unmarshalStruct(value reflect.Value, data interface{}, tag reflect.StructTa
 	return nil
 }
 
-func unmarshalList(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+func (u unmarshaler) unmarshalList(value reflect.Value, data interface{}, tag reflect.StructTag) error {
 	if data == nil {
 		return nil
 	}
@@ -153,7 +192,7 @@ func unmarshalList(value reflect.Value, data interface{}, tag reflect.StructTag)
 	}
 
 	for i, c := range listData {
-		err := unmarshalAny(value.Index(i), c, "")
+		err := u.unmarshalAny(value.Index(i), c, "")
 		if err != nil {
 			return err
 		}
@@ -162,7 +201,7 @@ func unmarshalList(value reflect.Value, data interface{}, tag reflect.StructTag)
 	return nil
 }
 
-func unmarshalMap(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+func (u unmarshaler) unmarshalMap(value reflect.Value, data interface{}, tag reflect.StructTag) error {
 	if data == nil {
 		return nil
 	}
@@ -179,14 +218,14 @@ func unmarshalMap(value reflect.Value, data interface{}, tag reflect.StructTag)
 		kvalue := reflect.ValueOf(k)
 		vvalue := reflect.New(value.Type().Elem()).Elem()
 
-		unmarshalAny(vvalue, v, "")
+		u.unmarshalAny(vvalue, v, "")
 		value.SetMapIndex(kvalue, vvalue)
 	}
 
 	return nil
 }
 
-func unmarshalScalar(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+func (u unmarshaler) unmarshalScalar(value reflect.Value, data interface{}, tag reflect.StructTag) error {
 
 	switch d := data.(type) {
 	case nil:
@@ -222,16 +261,31 @@ func unmarshalScalar(value reflect.Value, data interface{}, tag reflect.StructTa
 		default:
 			return fmt.Errorf("unsupported value: %v (%s)", value.Interface(), value.Type())
 		}
-	case float64:
+	case json.Number:
 		switch value.Interface().(type) {
 		case *int64:
-			di := int64(d)
+			// Retain the old behavior where we would just truncate the float64
+			// calling d.Int64() here could cause an invalid syntax error due to the usage of strconv.ParseInt
+			f, err := d.Float64()
+			if err != nil {
+				return err
+			}
+			di := int64(f)
 			value.Set(reflect.ValueOf(&di))
 		case *float64:
-			value.Set(reflect.ValueOf(&d))
+			f, err := d.Float64()
+			if err != nil {
+				return err
+			}
+			value.Set(reflect.ValueOf(&f))
 		case *time.Time:
-			// Time unmarshaled from a float64 can only be epoch seconds
-			t := time.Unix(int64(d), 0).UTC()
+			float, ok := new(big.Float).SetString(d.String())
+			if !ok {
+				return fmt.Errorf("unsupported float time representation: %v", d.String())
+			}
+			float = float.Mul(float, millisecondsFloat)
+			ms, _ := float.Int64()
+			t := time.Unix(0, ms*1e6).UTC()
 			value.Set(reflect.ValueOf(&t))
 		default:
 			return fmt.Errorf("unsupported value: %v (%s)", value.Interface(), value.Type())