add vendor

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/debug.go

@@ -0,0 +1,144 @@
+package eventstream
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"strconv"
+)
+
+type decodedMessage struct {
+	rawMessage
+	Headers decodedHeaders `json:"headers"`
+}
+type jsonMessage struct {
+	Length     json.Number    `json:"total_length"`
+	HeadersLen json.Number    `json:"headers_length"`
+	PreludeCRC json.Number    `json:"prelude_crc"`
+	Headers    decodedHeaders `json:"headers"`
+	Payload    []byte         `json:"payload"`
+	CRC        json.Number    `json:"message_crc"`
+}
+
+func (d *decodedMessage) UnmarshalJSON(b []byte) (err error) {
+	var jsonMsg jsonMessage
+	if err = json.Unmarshal(b, &jsonMsg); err != nil {
+		return err
+	}
+
+	d.Length, err = numAsUint32(jsonMsg.Length)
+	if err != nil {
+		return err
+	}
+	d.HeadersLen, err = numAsUint32(jsonMsg.HeadersLen)
+	if err != nil {
+		return err
+	}
+	d.PreludeCRC, err = numAsUint32(jsonMsg.PreludeCRC)
+	if err != nil {
+		return err
+	}
+	d.Headers = jsonMsg.Headers
+	d.Payload = jsonMsg.Payload
+	d.CRC, err = numAsUint32(jsonMsg.CRC)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (d *decodedMessage) MarshalJSON() ([]byte, error) {
+	jsonMsg := jsonMessage{
+		Length:     json.Number(strconv.Itoa(int(d.Length))),
+		HeadersLen: json.Number(strconv.Itoa(int(d.HeadersLen))),
+		PreludeCRC: json.Number(strconv.Itoa(int(d.PreludeCRC))),
+		Headers:    d.Headers,
+		Payload:    d.Payload,
+		CRC:        json.Number(strconv.Itoa(int(d.CRC))),
+	}
+
+	return json.Marshal(jsonMsg)
+}
+
+func numAsUint32(n json.Number) (uint32, error) {
+	v, err := n.Int64()
+	if err != nil {
+		return 0, fmt.Errorf("failed to get int64 json number, %v", err)
+	}
+
+	return uint32(v), nil
+}
+
+func (d decodedMessage) Message() Message {
+	return Message{
+		Headers: Headers(d.Headers),
+		Payload: d.Payload,
+	}
+}
+
+type decodedHeaders Headers
+
+func (hs *decodedHeaders) UnmarshalJSON(b []byte) error {
+	var jsonHeaders []struct {
+		Name  string      `json:"name"`
+		Type  valueType   `json:"type"`
+		Value interface{} `json:"value"`
+	}
+
+	decoder := json.NewDecoder(bytes.NewReader(b))
+	decoder.UseNumber()
+	if err := decoder.Decode(&jsonHeaders); err != nil {
+		return err
+	}
+
+	var headers Headers
+	for _, h := range jsonHeaders {
+		value, err := valueFromType(h.Type, h.Value)
+		if err != nil {
+			return err
+		}
+		headers.Set(h.Name, value)
+	}
+	(*hs) = decodedHeaders(headers)
+
+	return nil
+}
+
+func valueFromType(typ valueType, val interface{}) (Value, error) {
+	switch typ {
+	case trueValueType:
+		return BoolValue(true), nil
+	case falseValueType:
+		return BoolValue(false), nil
+	case int8ValueType:
+		v, err := val.(json.Number).Int64()
+		return Int8Value(int8(v)), err
+	case int16ValueType:
+		v, err := val.(json.Number).Int64()
+		return Int16Value(int16(v)), err
+	case int32ValueType:
+		v, err := val.(json.Number).Int64()
+		return Int32Value(int32(v)), err
+	case int64ValueType:
+		v, err := val.(json.Number).Int64()
+		return Int64Value(v), err
+	case bytesValueType:
+		v, err := base64.StdEncoding.DecodeString(val.(string))
+		return BytesValue(v), err
+	case stringValueType:
+		v, err := base64.StdEncoding.DecodeString(val.(string))
+		return StringValue(string(v)), err
+	case timestampValueType:
+		v, err := val.(json.Number).Int64()
+		return TimestampValue(timeFromEpochMilli(v)), err
+	case uuidValueType:
+		v, err := base64.StdEncoding.DecodeString(val.(string))
+		var tv UUIDValue
+		copy(tv[:], v)
+		return tv, err
+	default:
+		panic(fmt.Sprintf("unknown type, %s, %T", typ.String(), val))
+	}
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/decode.go

@@ -0,0 +1,199 @@
+package eventstream
+
+import (
+	"bytes"
+	"encoding/binary"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"hash"
+	"hash/crc32"
+	"io"
+
+	"github.com/aws/aws-sdk-go/aws"
+)
+
+// Decoder provides decoding of an Event Stream messages.
+type Decoder struct {
+	r      io.Reader
+	logger aws.Logger
+}
+
+// NewDecoder initializes and returns a Decoder for decoding event
+// stream messages from the reader provided.
+func NewDecoder(r io.Reader) *Decoder {
+	return &Decoder{
+		r: r,
+	}
+}
+
+// Decode attempts to decode a single message from the event stream reader.
+// Will return the event stream message, or error if Decode fails to read
+// the message from the stream.
+func (d *Decoder) Decode(payloadBuf []byte) (m Message, err error) {
+	reader := d.r
+	if d.logger != nil {
+		debugMsgBuf := bytes.NewBuffer(nil)
+		reader = io.TeeReader(reader, debugMsgBuf)
+		defer func() {
+			logMessageDecode(d.logger, debugMsgBuf, m, err)
+		}()
+	}
+
+	crc := crc32.New(crc32IEEETable)
+	hashReader := io.TeeReader(reader, crc)
+
+	prelude, err := decodePrelude(hashReader, crc)
+	if err != nil {
+		return Message{}, err
+	}
+
+	if prelude.HeadersLen > 0 {
+		lr := io.LimitReader(hashReader, int64(prelude.HeadersLen))
+		m.Headers, err = decodeHeaders(lr)
+		if err != nil {
+			return Message{}, err
+		}
+	}
+
+	if payloadLen := prelude.PayloadLen(); payloadLen > 0 {
+		buf, err := decodePayload(payloadBuf, io.LimitReader(hashReader, int64(payloadLen)))
+		if err != nil {
+			return Message{}, err
+		}
+		m.Payload = buf
+	}
+
+	msgCRC := crc.Sum32()
+	if err := validateCRC(reader, msgCRC); err != nil {
+		return Message{}, err
+	}
+
+	return m, nil
+}
+
+// UseLogger specifies the Logger that that the decoder should use to log the
+// message decode to.
+func (d *Decoder) UseLogger(logger aws.Logger) {
+	d.logger = logger
+}
+
+func logMessageDecode(logger aws.Logger, msgBuf *bytes.Buffer, msg Message, decodeErr error) {
+	w := bytes.NewBuffer(nil)
+	defer func() { logger.Log(w.String()) }()
+
+	fmt.Fprintf(w, "Raw message:\n%s\n",
+		hex.Dump(msgBuf.Bytes()))
+
+	if decodeErr != nil {
+		fmt.Fprintf(w, "Decode error: %v\n", decodeErr)
+		return
+	}
+
+	rawMsg, err := msg.rawMessage()
+	if err != nil {
+		fmt.Fprintf(w, "failed to create raw message, %v\n", err)
+		return
+	}
+
+	decodedMsg := decodedMessage{
+		rawMessage: rawMsg,
+		Headers:    decodedHeaders(msg.Headers),
+	}
+
+	fmt.Fprintf(w, "Decoded message:\n")
+	encoder := json.NewEncoder(w)
+	if err := encoder.Encode(decodedMsg); err != nil {
+		fmt.Fprintf(w, "failed to generate decoded message, %v\n", err)
+	}
+}
+
+func decodePrelude(r io.Reader, crc hash.Hash32) (messagePrelude, error) {
+	var p messagePrelude
+
+	var err error
+	p.Length, err = decodeUint32(r)
+	if err != nil {
+		return messagePrelude{}, err
+	}
+
+	p.HeadersLen, err = decodeUint32(r)
+	if err != nil {
+		return messagePrelude{}, err
+	}
+
+	if err := p.ValidateLens(); err != nil {
+		return messagePrelude{}, err
+	}
+
+	preludeCRC := crc.Sum32()
+	if err := validateCRC(r, preludeCRC); err != nil {
+		return messagePrelude{}, err
+	}
+
+	p.PreludeCRC = preludeCRC
+
+	return p, nil
+}
+
+func decodePayload(buf []byte, r io.Reader) ([]byte, error) {
+	w := bytes.NewBuffer(buf[0:0])
+
+	_, err := io.Copy(w, r)
+	return w.Bytes(), err
+}
+
+func decodeUint8(r io.Reader) (uint8, error) {
+	type byteReader interface {
+		ReadByte() (byte, error)
+	}
+
+	if br, ok := r.(byteReader); ok {
+		v, err := br.ReadByte()
+		return uint8(v), err
+	}
+
+	var b [1]byte
+	_, err := io.ReadFull(r, b[:])
+	return uint8(b[0]), err
+}
+func decodeUint16(r io.Reader) (uint16, error) {
+	var b [2]byte
+	bs := b[:]
+	_, err := io.ReadFull(r, bs)
+	if err != nil {
+		return 0, err
+	}
+	return binary.BigEndian.Uint16(bs), nil
+}
+func decodeUint32(r io.Reader) (uint32, error) {
+	var b [4]byte
+	bs := b[:]
+	_, err := io.ReadFull(r, bs)
+	if err != nil {
+		return 0, err
+	}
+	return binary.BigEndian.Uint32(bs), nil
+}
+func decodeUint64(r io.Reader) (uint64, error) {
+	var b [8]byte
+	bs := b[:]
+	_, err := io.ReadFull(r, bs)
+	if err != nil {
+		return 0, err
+	}
+	return binary.BigEndian.Uint64(bs), nil
+}
+
+func validateCRC(r io.Reader, expect uint32) error {
+	msgCRC, err := decodeUint32(r)
+	if err != nil {
+		return err
+	}
+
+	if msgCRC != expect {
+		return ChecksumError{}
+	}
+
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/encode.go

@@ -0,0 +1,114 @@
+package eventstream
+
+import (
+	"bytes"
+	"encoding/binary"
+	"hash"
+	"hash/crc32"
+	"io"
+)
+
+// Encoder provides EventStream message encoding.
+type Encoder struct {
+	w io.Writer
+
+	headersBuf *bytes.Buffer
+}
+
+// NewEncoder initializes and returns an Encoder to encode Event Stream
+// messages to an io.Writer.
+func NewEncoder(w io.Writer) *Encoder {
+	return &Encoder{
+		w:          w,
+		headersBuf: bytes.NewBuffer(nil),
+	}
+}
+
+// Encode encodes a single EventStream message to the io.Writer the Encoder
+// was created with. An error is returned if writing the message fails.
+func (e *Encoder) Encode(msg Message) error {
+	e.headersBuf.Reset()
+
+	err := encodeHeaders(e.headersBuf, msg.Headers)
+	if err != nil {
+		return err
+	}
+
+	crc := crc32.New(crc32IEEETable)
+	hashWriter := io.MultiWriter(e.w, crc)
+
+	headersLen := uint32(e.headersBuf.Len())
+	payloadLen := uint32(len(msg.Payload))
+
+	if err := encodePrelude(hashWriter, crc, headersLen, payloadLen); err != nil {
+		return err
+	}
+
+	if headersLen > 0 {
+		if _, err := io.Copy(hashWriter, e.headersBuf); err != nil {
+			return err
+		}
+	}
+
+	if payloadLen > 0 {
+		if _, err := hashWriter.Write(msg.Payload); err != nil {
+			return err
+		}
+	}
+
+	msgCRC := crc.Sum32()
+	return binary.Write(e.w, binary.BigEndian, msgCRC)
+}
+
+func encodePrelude(w io.Writer, crc hash.Hash32, headersLen, payloadLen uint32) error {
+	p := messagePrelude{
+		Length:     minMsgLen + headersLen + payloadLen,
+		HeadersLen: headersLen,
+	}
+	if err := p.ValidateLens(); err != nil {
+		return err
+	}
+
+	err := binaryWriteFields(w, binary.BigEndian,
+		p.Length,
+		p.HeadersLen,
+	)
+	if err != nil {
+		return err
+	}
+
+	p.PreludeCRC = crc.Sum32()
+	err = binary.Write(w, binary.BigEndian, p.PreludeCRC)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func encodeHeaders(w io.Writer, headers Headers) error {
+	for _, h := range headers {
+		hn := headerName{
+			Len: uint8(len(h.Name)),
+		}
+		copy(hn.Name[:hn.Len], h.Name)
+		if err := hn.encode(w); err != nil {
+			return err
+		}
+
+		if err := h.Value.encode(w); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func binaryWriteFields(w io.Writer, order binary.ByteOrder, vs ...interface{}) error {
+	for _, v := range vs {
+		if err := binary.Write(w, order, v); err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/error.go

@@ -0,0 +1,23 @@
+package eventstream
+
+import "fmt"
+
+// LengthError provides the error for items being larger than a maximum length.
+type LengthError struct {
+	Part  string
+	Want  int
+	Have  int
+	Value interface{}
+}
+
+func (e LengthError) Error() string {
+	return fmt.Sprintf("%s length invalid, %d/%d, %v",
+		e.Part, e.Want, e.Have, e.Value)
+}
+
+// ChecksumError provides the error for message checksum invalidation errors.
+type ChecksumError struct{}
+
+func (e ChecksumError) Error() string {
+	return "message checksum mismatch"
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/eventstreamapi/api.go

@@ -0,0 +1,196 @@
+package eventstreamapi
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/private/protocol"
+	"github.com/aws/aws-sdk-go/private/protocol/eventstream"
+)
+
+// Unmarshaler provides the interface for unmarshaling a EventStream
+// message into a SDK type.
+type Unmarshaler interface {
+	UnmarshalEvent(protocol.PayloadUnmarshaler, eventstream.Message) error
+}
+
+// EventStream headers with specific meaning to async API functionality.
+const (
+	MessageTypeHeader    = `:message-type` // Identifies type of message.
+	EventMessageType     = `event`
+	ErrorMessageType     = `error`
+	ExceptionMessageType = `exception`
+
+	// Message Events
+	EventTypeHeader = `:event-type` // Identifies message event type e.g. "Stats".
+
+	// Message Error
+	ErrorCodeHeader    = `:error-code`
+	ErrorMessageHeader = `:error-message`
+
+	// Message Exception
+	ExceptionTypeHeader = `:exception-type`
+)
+
+// EventReader provides reading from the EventStream of an reader.
+type EventReader struct {
+	reader  io.ReadCloser
+	decoder *eventstream.Decoder
+
+	unmarshalerForEventType func(string) (Unmarshaler, error)
+	payloadUnmarshaler      protocol.PayloadUnmarshaler
+
+	payloadBuf []byte
+}
+
+// NewEventReader returns a EventReader built from the reader and unmarshaler
+// provided.  Use ReadStream method to start reading from the EventStream.
+func NewEventReader(
+	reader io.ReadCloser,
+	payloadUnmarshaler protocol.PayloadUnmarshaler,
+	unmarshalerForEventType func(string) (Unmarshaler, error),
+) *EventReader {
+	return &EventReader{
+		reader:                  reader,
+		decoder:                 eventstream.NewDecoder(reader),
+		payloadUnmarshaler:      payloadUnmarshaler,
+		unmarshalerForEventType: unmarshalerForEventType,
+		payloadBuf:              make([]byte, 10*1024),
+	}
+}
+
+// UseLogger instructs the EventReader to use the logger and log level
+// specified.
+func (r *EventReader) UseLogger(logger aws.Logger, logLevel aws.LogLevelType) {
+	if logger != nil && logLevel.Matches(aws.LogDebugWithEventStreamBody) {
+		r.decoder.UseLogger(logger)
+	}
+}
+
+// ReadEvent attempts to read a message from the EventStream and return the
+// unmarshaled event value that the message is for.
+//
+// For EventStream API errors check if the returned error satisfies the
+// awserr.Error interface to get the error's Code and Message components.
+//
+// EventUnmarshalers called with EventStream messages must take copies of the
+// message's Payload. The payload will is reused between events read.
+func (r *EventReader) ReadEvent() (event interface{}, err error) {
+	msg, err := r.decoder.Decode(r.payloadBuf)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		// Reclaim payload buffer for next message read.
+		r.payloadBuf = msg.Payload[0:0]
+	}()
+
+	typ, err := GetHeaderString(msg, MessageTypeHeader)
+	if err != nil {
+		return nil, err
+	}
+
+	switch typ {
+	case EventMessageType:
+		return r.unmarshalEventMessage(msg)
+	case ExceptionMessageType:
+		err = r.unmarshalEventException(msg)
+		return nil, err
+	case ErrorMessageType:
+		return nil, r.unmarshalErrorMessage(msg)
+	default:
+		return nil, fmt.Errorf("unknown eventstream message type, %v", typ)
+	}
+}
+
+func (r *EventReader) unmarshalEventMessage(
+	msg eventstream.Message,
+) (event interface{}, err error) {
+	eventType, err := GetHeaderString(msg, EventTypeHeader)
+	if err != nil {
+		return nil, err
+	}
+
+	ev, err := r.unmarshalerForEventType(eventType)
+	if err != nil {
+		return nil, err
+	}
+
+	err = ev.UnmarshalEvent(r.payloadUnmarshaler, msg)
+	if err != nil {
+		return nil, err
+	}
+
+	return ev, nil
+}
+
+func (r *EventReader) unmarshalEventException(
+	msg eventstream.Message,
+) (err error) {
+	eventType, err := GetHeaderString(msg, ExceptionTypeHeader)
+	if err != nil {
+		return err
+	}
+
+	ev, err := r.unmarshalerForEventType(eventType)
+	if err != nil {
+		return err
+	}
+
+	err = ev.UnmarshalEvent(r.payloadUnmarshaler, msg)
+	if err != nil {
+		return err
+	}
+
+	var ok bool
+	err, ok = ev.(error)
+	if !ok {
+		err = messageError{
+			code: "SerializationError",
+			msg: fmt.Sprintf(
+				"event stream exception %s mapped to non-error %T, %v",
+				eventType, ev, ev,
+			),
+		}
+	}
+
+	return err
+}
+
+func (r *EventReader) unmarshalErrorMessage(msg eventstream.Message) (err error) {
+	var msgErr messageError
+
+	msgErr.code, err = GetHeaderString(msg, ErrorCodeHeader)
+	if err != nil {
+		return err
+	}
+
+	msgErr.msg, err = GetHeaderString(msg, ErrorMessageHeader)
+	if err != nil {
+		return err
+	}
+
+	return msgErr
+}
+
+// Close closes the EventReader's EventStream reader.
+func (r *EventReader) Close() error {
+	return r.reader.Close()
+}
+
+// GetHeaderString returns the value of the header as a string. If the header
+// is not set or the value is not a string an error will be returned.
+func GetHeaderString(msg eventstream.Message, headerName string) (string, error) {
+	headerVal := msg.Headers.Get(headerName)
+	if headerVal == nil {
+		return "", fmt.Errorf("error header %s not present", headerName)
+	}
+
+	v, ok := headerVal.Get().(string)
+	if !ok {
+		return "", fmt.Errorf("error header value is not a string, %T", headerVal)
+	}
+
+	return v, nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/eventstreamapi/error.go

@@ -0,0 +1,24 @@
+package eventstreamapi
+
+import "fmt"
+
+type messageError struct {
+	code string
+	msg  string
+}
+
+func (e messageError) Code() string {
+	return e.code
+}
+
+func (e messageError) Message() string {
+	return e.msg
+}
+
+func (e messageError) Error() string {
+	return fmt.Sprintf("%s: %s", e.code, e.msg)
+}
+
+func (e messageError) OrigErr() error {
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/header.go

@@ -0,0 +1,166 @@
+package eventstream
+
+import (
+	"encoding/binary"
+	"fmt"
+	"io"
+)
+
+// Headers are a collection of EventStream header values.
+type Headers []Header
+
+// Header is a single EventStream Key Value header pair.
+type Header struct {
+	Name  string
+	Value Value
+}
+
+// Set associates the name with a value. If the header name already exists in
+// the Headers the value will be replaced with the new one.
+func (hs *Headers) Set(name string, value Value) {
+	var i int
+	for ; i < len(*hs); i++ {
+		if (*hs)[i].Name == name {
+			(*hs)[i].Value = value
+			return
+		}
+	}
+
+	*hs = append(*hs, Header{
+		Name: name, Value: value,
+	})
+}
+
+// Get returns the Value associated with the header. Nil is returned if the
+// value does not exist.
+func (hs Headers) Get(name string) Value {
+	for i := 0; i < len(hs); i++ {
+		if h := hs[i]; h.Name == name {
+			return h.Value
+		}
+	}
+	return nil
+}
+
+// Del deletes the value in the Headers if it exists.
+func (hs *Headers) Del(name string) {
+	for i := 0; i < len(*hs); i++ {
+		if (*hs)[i].Name == name {
+			copy((*hs)[i:], (*hs)[i+1:])
+			(*hs) = (*hs)[:len(*hs)-1]
+		}
+	}
+}
+
+func decodeHeaders(r io.Reader) (Headers, error) {
+	hs := Headers{}
+
+	for {
+		name, err := decodeHeaderName(r)
+		if err != nil {
+			if err == io.EOF {
+				// EOF while getting header name means no more headers
+				break
+			}
+			return nil, err
+		}
+
+		value, err := decodeHeaderValue(r)
+		if err != nil {
+			return nil, err
+		}
+
+		hs.Set(name, value)
+	}
+
+	return hs, nil
+}
+
+func decodeHeaderName(r io.Reader) (string, error) {
+	var n headerName
+
+	var err error
+	n.Len, err = decodeUint8(r)
+	if err != nil {
+		return "", err
+	}
+
+	name := n.Name[:n.Len]
+	if _, err := io.ReadFull(r, name); err != nil {
+		return "", err
+	}
+
+	return string(name), nil
+}
+
+func decodeHeaderValue(r io.Reader) (Value, error) {
+	var raw rawValue
+
+	typ, err := decodeUint8(r)
+	if err != nil {
+		return nil, err
+	}
+	raw.Type = valueType(typ)
+
+	var v Value
+
+	switch raw.Type {
+	case trueValueType:
+		v = BoolValue(true)
+	case falseValueType:
+		v = BoolValue(false)
+	case int8ValueType:
+		var tv Int8Value
+		err = tv.decode(r)
+		v = tv
+	case int16ValueType:
+		var tv Int16Value
+		err = tv.decode(r)
+		v = tv
+	case int32ValueType:
+		var tv Int32Value
+		err = tv.decode(r)
+		v = tv
+	case int64ValueType:
+		var tv Int64Value
+		err = tv.decode(r)
+		v = tv
+	case bytesValueType:
+		var tv BytesValue
+		err = tv.decode(r)
+		v = tv
+	case stringValueType:
+		var tv StringValue
+		err = tv.decode(r)
+		v = tv
+	case timestampValueType:
+		var tv TimestampValue
+		err = tv.decode(r)
+		v = tv
+	case uuidValueType:
+		var tv UUIDValue
+		err = tv.decode(r)
+		v = tv
+	default:
+		panic(fmt.Sprintf("unknown value type %d", raw.Type))
+	}
+
+	// Error could be EOF, let caller deal with it
+	return v, err
+}
+
+const maxHeaderNameLen = 255
+
+type headerName struct {
+	Len  uint8
+	Name [maxHeaderNameLen]byte
+}
+
+func (v headerName) encode(w io.Writer) error {
+	if err := binary.Write(w, binary.BigEndian, v.Len); err != nil {
+		return err
+	}
+
+	_, err := w.Write(v.Name[:v.Len])
+	return err
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/header_value.go

@@ -0,0 +1,501 @@
+package eventstream
+
+import (
+	"encoding/base64"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"strconv"
+	"time"
+)
+
+const maxHeaderValueLen = 1<<15 - 1 // 2^15-1 or 32KB - 1
+
+// valueType is the EventStream header value type.
+type valueType uint8
+
+// Header value types
+const (
+	trueValueType valueType = iota
+	falseValueType
+	int8ValueType  // Byte
+	int16ValueType // Short
+	int32ValueType // Integer
+	int64ValueType // Long
+	bytesValueType
+	stringValueType
+	timestampValueType
+	uuidValueType
+)
+
+func (t valueType) String() string {
+	switch t {
+	case trueValueType:
+		return "bool"
+	case falseValueType:
+		return "bool"
+	case int8ValueType:
+		return "int8"
+	case int16ValueType:
+		return "int16"
+	case int32ValueType:
+		return "int32"
+	case int64ValueType:
+		return "int64"
+	case bytesValueType:
+		return "byte_array"
+	case stringValueType:
+		return "string"
+	case timestampValueType:
+		return "timestamp"
+	case uuidValueType:
+		return "uuid"
+	default:
+		return fmt.Sprintf("unknown value type %d", uint8(t))
+	}
+}
+
+type rawValue struct {
+	Type  valueType
+	Len   uint16 // Only set for variable length slices
+	Value []byte // byte representation of value, BigEndian encoding.
+}
+
+func (r rawValue) encodeScalar(w io.Writer, v interface{}) error {
+	return binaryWriteFields(w, binary.BigEndian,
+		r.Type,
+		v,
+	)
+}
+
+func (r rawValue) encodeFixedSlice(w io.Writer, v []byte) error {
+	binary.Write(w, binary.BigEndian, r.Type)
+
+	_, err := w.Write(v)
+	return err
+}
+
+func (r rawValue) encodeBytes(w io.Writer, v []byte) error {
+	if len(v) > maxHeaderValueLen {
+		return LengthError{
+			Part: "header value",
+			Want: maxHeaderValueLen, Have: len(v),
+			Value: v,
+		}
+	}
+	r.Len = uint16(len(v))
+
+	err := binaryWriteFields(w, binary.BigEndian,
+		r.Type,
+		r.Len,
+	)
+	if err != nil {
+		return err
+	}
+
+	_, err = w.Write(v)
+	return err
+}
+
+func (r rawValue) encodeString(w io.Writer, v string) error {
+	if len(v) > maxHeaderValueLen {
+		return LengthError{
+			Part: "header value",
+			Want: maxHeaderValueLen, Have: len(v),
+			Value: v,
+		}
+	}
+	r.Len = uint16(len(v))
+
+	type stringWriter interface {
+		WriteString(string) (int, error)
+	}
+
+	err := binaryWriteFields(w, binary.BigEndian,
+		r.Type,
+		r.Len,
+	)
+	if err != nil {
+		return err
+	}
+
+	if sw, ok := w.(stringWriter); ok {
+		_, err = sw.WriteString(v)
+	} else {
+		_, err = w.Write([]byte(v))
+	}
+
+	return err
+}
+
+func decodeFixedBytesValue(r io.Reader, buf []byte) error {
+	_, err := io.ReadFull(r, buf)
+	return err
+}
+
+func decodeBytesValue(r io.Reader) ([]byte, error) {
+	var raw rawValue
+	var err error
+	raw.Len, err = decodeUint16(r)
+	if err != nil {
+		return nil, err
+	}
+
+	buf := make([]byte, raw.Len)
+	_, err = io.ReadFull(r, buf)
+	if err != nil {
+		return nil, err
+	}
+
+	return buf, nil
+}
+
+func decodeStringValue(r io.Reader) (string, error) {
+	v, err := decodeBytesValue(r)
+	return string(v), err
+}
+
+// Value represents the abstract header value.
+type Value interface {
+	Get() interface{}
+	String() string
+	valueType() valueType
+	encode(io.Writer) error
+}
+
+// An BoolValue provides eventstream encoding, and representation
+// of a Go bool value.
+type BoolValue bool
+
+// Get returns the underlying type
+func (v BoolValue) Get() interface{} {
+	return bool(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (v BoolValue) valueType() valueType {
+	if v {
+		return trueValueType
+	}
+	return falseValueType
+}
+
+func (v BoolValue) String() string {
+	return strconv.FormatBool(bool(v))
+}
+
+// encode encodes the BoolValue into an eventstream binary value
+// representation.
+func (v BoolValue) encode(w io.Writer) error {
+	return binary.Write(w, binary.BigEndian, v.valueType())
+}
+
+// An Int8Value provides eventstream encoding, and representation of a Go
+// int8 value.
+type Int8Value int8
+
+// Get returns the underlying value.
+func (v Int8Value) Get() interface{} {
+	return int8(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int8Value) valueType() valueType {
+	return int8ValueType
+}
+
+func (v Int8Value) String() string {
+	return fmt.Sprintf("0x%02x", int8(v))
+}
+
+// encode encodes the Int8Value into an eventstream binary value
+// representation.
+func (v Int8Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int8Value) decode(r io.Reader) error {
+	n, err := decodeUint8(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int8Value(n)
+	return nil
+}
+
+// An Int16Value provides eventstream encoding, and representation of a Go
+// int16 value.
+type Int16Value int16
+
+// Get returns the underlying value.
+func (v Int16Value) Get() interface{} {
+	return int16(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int16Value) valueType() valueType {
+	return int16ValueType
+}
+
+func (v Int16Value) String() string {
+	return fmt.Sprintf("0x%04x", int16(v))
+}
+
+// encode encodes the Int16Value into an eventstream binary value
+// representation.
+func (v Int16Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int16Value) decode(r io.Reader) error {
+	n, err := decodeUint16(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int16Value(n)
+	return nil
+}
+
+// An Int32Value provides eventstream encoding, and representation of a Go
+// int32 value.
+type Int32Value int32
+
+// Get returns the underlying value.
+func (v Int32Value) Get() interface{} {
+	return int32(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int32Value) valueType() valueType {
+	return int32ValueType
+}
+
+func (v Int32Value) String() string {
+	return fmt.Sprintf("0x%08x", int32(v))
+}
+
+// encode encodes the Int32Value into an eventstream binary value
+// representation.
+func (v Int32Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int32Value) decode(r io.Reader) error {
+	n, err := decodeUint32(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int32Value(n)
+	return nil
+}
+
+// An Int64Value provides eventstream encoding, and representation of a Go
+// int64 value.
+type Int64Value int64
+
+// Get returns the underlying value.
+func (v Int64Value) Get() interface{} {
+	return int64(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int64Value) valueType() valueType {
+	return int64ValueType
+}
+
+func (v Int64Value) String() string {
+	return fmt.Sprintf("0x%016x", int64(v))
+}
+
+// encode encodes the Int64Value into an eventstream binary value
+// representation.
+func (v Int64Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int64Value) decode(r io.Reader) error {
+	n, err := decodeUint64(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int64Value(n)
+	return nil
+}
+
+// An BytesValue provides eventstream encoding, and representation of a Go
+// byte slice.
+type BytesValue []byte
+
+// Get returns the underlying value.
+func (v BytesValue) Get() interface{} {
+	return []byte(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (BytesValue) valueType() valueType {
+	return bytesValueType
+}
+
+func (v BytesValue) String() string {
+	return base64.StdEncoding.EncodeToString([]byte(v))
+}
+
+// encode encodes the BytesValue into an eventstream binary value
+// representation.
+func (v BytesValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeBytes(w, []byte(v))
+}
+
+func (v *BytesValue) decode(r io.Reader) error {
+	buf, err := decodeBytesValue(r)
+	if err != nil {
+		return err
+	}
+
+	*v = BytesValue(buf)
+	return nil
+}
+
+// An StringValue provides eventstream encoding, and representation of a Go
+// string.
+type StringValue string
+
+// Get returns the underlying value.
+func (v StringValue) Get() interface{} {
+	return string(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (StringValue) valueType() valueType {
+	return stringValueType
+}
+
+func (v StringValue) String() string {
+	return string(v)
+}
+
+// encode encodes the StringValue into an eventstream binary value
+// representation.
+func (v StringValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeString(w, string(v))
+}
+
+func (v *StringValue) decode(r io.Reader) error {
+	s, err := decodeStringValue(r)
+	if err != nil {
+		return err
+	}
+
+	*v = StringValue(s)
+	return nil
+}
+
+// An TimestampValue provides eventstream encoding, and representation of a Go
+// timestamp.
+type TimestampValue time.Time
+
+// Get returns the underlying value.
+func (v TimestampValue) Get() interface{} {
+	return time.Time(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (TimestampValue) valueType() valueType {
+	return timestampValueType
+}
+
+func (v TimestampValue) epochMilli() int64 {
+	nano := time.Time(v).UnixNano()
+	msec := nano / int64(time.Millisecond)
+	return msec
+}
+
+func (v TimestampValue) String() string {
+	msec := v.epochMilli()
+	return strconv.FormatInt(msec, 10)
+}
+
+// encode encodes the TimestampValue into an eventstream binary value
+// representation.
+func (v TimestampValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	msec := v.epochMilli()
+	return raw.encodeScalar(w, msec)
+}
+
+func (v *TimestampValue) decode(r io.Reader) error {
+	n, err := decodeUint64(r)
+	if err != nil {
+		return err
+	}
+
+	*v = TimestampValue(timeFromEpochMilli(int64(n)))
+	return nil
+}
+
+func timeFromEpochMilli(t int64) time.Time {
+	secs := t / 1e3
+	msec := t % 1e3
+	return time.Unix(secs, msec*int64(time.Millisecond)).UTC()
+}
+
+// An UUIDValue provides eventstream encoding, and representation of a UUID
+// value.
+type UUIDValue [16]byte
+
+// Get returns the underlying value.
+func (v UUIDValue) Get() interface{} {
+	return v[:]
+}
+
+// valueType returns the EventStream header value type value.
+func (UUIDValue) valueType() valueType {
+	return uuidValueType
+}
+
+func (v UUIDValue) String() string {
+	return fmt.Sprintf(`%X-%X-%X-%X-%X`, v[0:4], v[4:6], v[6:8], v[8:10], v[10:])
+}
+
+// encode encodes the UUIDValue into an eventstream binary value
+// representation.
+func (v UUIDValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeFixedSlice(w, v[:])
+}
+
+func (v *UUIDValue) decode(r io.Reader) error {
+	tv := (*v)[:]
+	return decodeFixedBytesValue(r, tv)
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/message.go

@@ -0,0 +1,103 @@
+package eventstream
+
+import (
+	"bytes"
+	"encoding/binary"
+	"hash/crc32"
+)
+
+const preludeLen = 8
+const preludeCRCLen = 4
+const msgCRCLen = 4
+const minMsgLen = preludeLen + preludeCRCLen + msgCRCLen
+const maxPayloadLen = 1024 * 1024 * 16 // 16MB
+const maxHeadersLen = 1024 * 128       // 128KB
+const maxMsgLen = minMsgLen + maxHeadersLen + maxPayloadLen
+
+var crc32IEEETable = crc32.MakeTable(crc32.IEEE)
+
+// A Message provides the eventstream message representation.
+type Message struct {
+	Headers Headers
+	Payload []byte
+}
+
+func (m *Message) rawMessage() (rawMessage, error) {
+	var raw rawMessage
+
+	if len(m.Headers) > 0 {
+		var headers bytes.Buffer
+		if err := encodeHeaders(&headers, m.Headers); err != nil {
+			return rawMessage{}, err
+		}
+		raw.Headers = headers.Bytes()
+		raw.HeadersLen = uint32(len(raw.Headers))
+	}
+
+	raw.Length = raw.HeadersLen + uint32(len(m.Payload)) + minMsgLen
+
+	hash := crc32.New(crc32IEEETable)
+	binaryWriteFields(hash, binary.BigEndian, raw.Length, raw.HeadersLen)
+	raw.PreludeCRC = hash.Sum32()
+
+	binaryWriteFields(hash, binary.BigEndian, raw.PreludeCRC)
+
+	if raw.HeadersLen > 0 {
+		hash.Write(raw.Headers)
+	}
+
+	// Read payload bytes and update hash for it as well.
+	if len(m.Payload) > 0 {
+		raw.Payload = m.Payload
+		hash.Write(raw.Payload)
+	}
+
+	raw.CRC = hash.Sum32()
+
+	return raw, nil
+}
+
+type messagePrelude struct {
+	Length     uint32
+	HeadersLen uint32
+	PreludeCRC uint32
+}
+
+func (p messagePrelude) PayloadLen() uint32 {
+	return p.Length - p.HeadersLen - minMsgLen
+}
+
+func (p messagePrelude) ValidateLens() error {
+	if p.Length == 0 || p.Length > maxMsgLen {
+		return LengthError{
+			Part: "message prelude",
+			Want: maxMsgLen,
+			Have: int(p.Length),
+		}
+	}
+	if p.HeadersLen > maxHeadersLen {
+		return LengthError{
+			Part: "message headers",
+			Want: maxHeadersLen,
+			Have: int(p.HeadersLen),
+		}
+	}
+	if payloadLen := p.PayloadLen(); payloadLen > maxPayloadLen {
+		return LengthError{
+			Part: "message payload",
+			Want: maxPayloadLen,
+			Have: int(payloadLen),
+		}
+	}
+
+	return nil
+}
+
+type rawMessage struct {
+	messagePrelude
+
+	Headers []byte
+	Payload []byte
+
+	CRC uint32
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/host.go

@@ -0,0 +1,68 @@
+package protocol
+
+import (
+	"strings"
+
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// ValidateEndpointHostHandler is a request handler that will validate the
+// request endpoint's hosts is a valid RFC 3986 host.
+var ValidateEndpointHostHandler = request.NamedHandler{
+	Name: "awssdk.protocol.ValidateEndpointHostHandler",
+	Fn: func(r *request.Request) {
+		err := ValidateEndpointHost(r.Operation.Name, r.HTTPRequest.URL.Host)
+		if err != nil {
+			r.Error = err
+		}
+	},
+}
+
+// ValidateEndpointHost validates that the host string passed in is a valid RFC
+// 3986 host. Returns error if the host is not valid.
+func ValidateEndpointHost(opName, host string) error {
+	paramErrs := request.ErrInvalidParams{Context: opName}
+	labels := strings.Split(host, ".")
+
+	for i, label := range labels {
+		if i == len(labels)-1 && len(label) == 0 {
+			// Allow trailing dot for FQDN hosts.
+			continue
+		}
+
+		if !ValidHostLabel(label) {
+			paramErrs.Add(request.NewErrParamFormat(
+				"endpoint host label", "[a-zA-Z0-9-]{1,63}", label))
+		}
+	}
+
+	if len(host) > 255 {
+		paramErrs.Add(request.NewErrParamMaxLen(
+			"endpoint host", 255, host,
+		))
+	}
+
+	if paramErrs.Len() > 0 {
+		return paramErrs
+	}
+	return nil
+}
+
+// ValidHostLabel returns if the label is a valid RFC 3986 host label.
+func ValidHostLabel(label string) bool {
+	if l := len(label); l == 0 || l > 63 {
+		return false
+	}
+	for _, r := range label {
+		switch {
+		case r >= '0' && r <= '9':
+		case r >= 'A' && r <= 'Z':
+		case r >= 'a' && r <= 'z':
+		case r == '-':
+		default:
+			return false
+		}
+	}
+
+	return true
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/host_prefix.go

@@ -0,0 +1,54 @@
+package protocol
+
+import (
+	"strings"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// HostPrefixHandlerName is the handler name for the host prefix request
+// handler.
+const HostPrefixHandlerName = "awssdk.endpoint.HostPrefixHandler"
+
+// NewHostPrefixHandler constructs a build handler
+func NewHostPrefixHandler(prefix string, labelsFn func() map[string]string) request.NamedHandler {
+	builder := HostPrefixBuilder{
+		Prefix:   prefix,
+		LabelsFn: labelsFn,
+	}
+
+	return request.NamedHandler{
+		Name: HostPrefixHandlerName,
+		Fn:   builder.Build,
+	}
+}
+
+// HostPrefixBuilder provides the request handler to expand and prepend
+// the host prefix into the operation's request endpoint host.
+type HostPrefixBuilder struct {
+	Prefix   string
+	LabelsFn func() map[string]string
+}
+
+// Build updates the passed in Request with the HostPrefix template expanded.
+func (h HostPrefixBuilder) Build(r *request.Request) {
+	if aws.BoolValue(r.Config.DisableEndpointHostPrefix) {
+		return
+	}
+
+	var labels map[string]string
+	if h.LabelsFn != nil {
+		labels = h.LabelsFn()
+	}
+
+	prefix := h.Prefix
+	for name, value := range labels {
+		prefix = strings.Replace(prefix, "{"+name+"}", value, -1)
+	}
+
+	r.HTTPRequest.URL.Host = prefix + r.HTTPRequest.URL.Host
+	if len(r.HTTPRequest.Host) > 0 {
+		r.HTTPRequest.Host = prefix + r.HTTPRequest.Host
+	}
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/idempotency.go

@@ -0,0 +1,75 @@
+package protocol
+
+import (
+	"crypto/rand"
+	"fmt"
+	"reflect"
+)
+
+// RandReader is the random reader the protocol package will use to read
+// random bytes from. This is exported for testing, and should not be used.
+var RandReader = rand.Reader
+
+const idempotencyTokenFillTag = `idempotencyToken`
+
+// CanSetIdempotencyToken returns true if the struct field should be
+// automatically populated with a Idempotency token.
+//
+// Only *string and string type fields that are tagged with idempotencyToken
+// which are not already set can be auto filled.
+func CanSetIdempotencyToken(v reflect.Value, f reflect.StructField) bool {
+	switch u := v.Interface().(type) {
+	// To auto fill an Idempotency token the field must be a string,
+	// tagged for auto fill, and have a zero value.
+	case *string:
+		return u == nil && len(f.Tag.Get(idempotencyTokenFillTag)) != 0
+	case string:
+		return len(u) == 0 && len(f.Tag.Get(idempotencyTokenFillTag)) != 0
+	}
+
+	return false
+}
+
+// GetIdempotencyToken returns a randomly generated idempotency token.
+func GetIdempotencyToken() string {
+	b := make([]byte, 16)
+	RandReader.Read(b)
+
+	return UUIDVersion4(b)
+}
+
+// SetIdempotencyToken will set the value provided with a Idempotency Token.
+// Given that the value can be set. Will panic if value is not setable.
+func SetIdempotencyToken(v reflect.Value) {
+	if v.Kind() == reflect.Ptr {
+		if v.IsNil() && v.CanSet() {
+			v.Set(reflect.New(v.Type().Elem()))
+		}
+		v = v.Elem()
+	}
+	v = reflect.Indirect(v)
+
+	if !v.CanSet() {
+		panic(fmt.Sprintf("unable to set idempotnecy token %v", v))
+	}
+
+	b := make([]byte, 16)
+	_, err := rand.Read(b)
+	if err != nil {
+		// TODO handle error
+		return
+	}
+
+	v.Set(reflect.ValueOf(UUIDVersion4(b)))
+}
+
+// UUIDVersion4 returns a Version 4 random UUID from the byte slice provided
+func UUIDVersion4(u []byte) string {
+	// https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_.28random.29
+	// 13th character is "4"
+	u[6] = (u[6] | 0x40) & 0x4F
+	// 17th character is "8", "9", "a", or "b"
+	u[8] = (u[8] | 0x80) & 0xBF
+
+	return fmt.Sprintf(`%X-%X-%X-%X-%X`, u[0:4], u[4:6], u[6:8], u[8:10], u[10:])
+}

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

@@ -0,0 +1,296 @@
+// Package jsonutil provides JSON serialization of AWS requests and responses.
+package jsonutil
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"math"
+	"reflect"
+	"sort"
+	"strconv"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/private/protocol"
+)
+
+var timeType = reflect.ValueOf(time.Time{}).Type()
+var byteSliceType = reflect.ValueOf([]byte{}).Type()
+
+// BuildJSON builds a JSON string for a given object v.
+func BuildJSON(v interface{}) ([]byte, error) {
+	var buf bytes.Buffer
+
+	err := buildAny(reflect.ValueOf(v), &buf, "")
+	return buf.Bytes(), err
+}
+
+func buildAny(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+	origVal := value
+	value = reflect.Indirect(value)
+	if !value.IsValid() {
+		return nil
+	}
+
+	vtype := value.Type()
+
+	t := tag.Get("type")
+	if t == "" {
+		switch vtype.Kind() {
+		case reflect.Struct:
+			// also it can't be a time object
+			if value.Type() != timeType {
+				t = "structure"
+			}
+		case reflect.Slice:
+			// also it can't be a byte slice
+			if _, ok := value.Interface().([]byte); !ok {
+				t = "list"
+			}
+		case reflect.Map:
+			// cannot be a JSONValue map
+			if _, ok := value.Interface().(aws.JSONValue); !ok {
+				t = "map"
+			}
+		}
+	}
+
+	switch t {
+	case "structure":
+		if field, ok := vtype.FieldByName("_"); ok {
+			tag = field.Tag
+		}
+		return buildStruct(value, buf, tag)
+	case "list":
+		return buildList(value, buf, tag)
+	case "map":
+		return buildMap(value, buf, tag)
+	default:
+		return buildScalar(origVal, buf, tag)
+	}
+}
+
+func buildStruct(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+	if !value.IsValid() {
+		return nil
+	}
+
+	// unwrap payloads
+	if payload := tag.Get("payload"); payload != "" {
+		field, _ := value.Type().FieldByName(payload)
+		tag = field.Tag
+		value = elemOf(value.FieldByName(payload))
+
+		if !value.IsValid() {
+			return nil
+		}
+	}
+
+	buf.WriteByte('{')
+
+	t := value.Type()
+	first := true
+	for i := 0; i < t.NumField(); i++ {
+		member := value.Field(i)
+
+		// This allocates the most memory.
+		// Additionally, we cannot skip nil fields due to
+		// idempotency auto filling.
+		field := t.Field(i)
+
+		if field.PkgPath != "" {
+			continue // ignore unexported fields
+		}
+		if field.Tag.Get("json") == "-" {
+			continue
+		}
+		if field.Tag.Get("location") != "" {
+			continue // ignore non-body elements
+		}
+		if field.Tag.Get("ignore") != "" {
+			continue
+		}
+
+		if protocol.CanSetIdempotencyToken(member, field) {
+			token := protocol.GetIdempotencyToken()
+			member = reflect.ValueOf(&token)
+		}
+
+		if (member.Kind() == reflect.Ptr || member.Kind() == reflect.Slice || member.Kind() == reflect.Map) && member.IsNil() {
+			continue // ignore unset fields
+		}
+
+		if first {
+			first = false
+		} else {
+			buf.WriteByte(',')
+		}
+
+		// figure out what this field is called
+		name := field.Name
+		if locName := field.Tag.Get("locationName"); locName != "" {
+			name = locName
+		}
+
+		writeString(name, buf)
+		buf.WriteString(`:`)
+
+		err := buildAny(member, buf, field.Tag)
+		if err != nil {
+			return err
+		}
+
+	}
+
+	buf.WriteString("}")
+
+	return nil
+}
+
+func buildList(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+	buf.WriteString("[")
+
+	for i := 0; i < value.Len(); i++ {
+		buildAny(value.Index(i), buf, "")
+
+		if i < value.Len()-1 {
+			buf.WriteString(",")
+		}
+	}
+
+	buf.WriteString("]")
+
+	return nil
+}
+
+type sortedValues []reflect.Value
+
+func (sv sortedValues) Len() int           { return len(sv) }
+func (sv sortedValues) Swap(i, j int)      { sv[i], sv[j] = sv[j], sv[i] }
+func (sv sortedValues) Less(i, j int) bool { return sv[i].String() < sv[j].String() }
+
+func buildMap(value reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+	buf.WriteString("{")
+
+	sv := sortedValues(value.MapKeys())
+	sort.Sort(sv)
+
+	for i, k := range sv {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+
+		writeString(k.String(), buf)
+		buf.WriteString(`:`)
+
+		buildAny(value.MapIndex(k), buf, "")
+	}
+
+	buf.WriteString("}")
+
+	return nil
+}
+
+func buildScalar(v reflect.Value, buf *bytes.Buffer, tag reflect.StructTag) error {
+	// prevents allocation on the heap.
+	scratch := [64]byte{}
+	switch value := reflect.Indirect(v); value.Kind() {
+	case reflect.String:
+		writeString(value.String(), buf)
+	case reflect.Bool:
+		if value.Bool() {
+			buf.WriteString("true")
+		} else {
+			buf.WriteString("false")
+		}
+	case reflect.Int64:
+		buf.Write(strconv.AppendInt(scratch[:0], value.Int(), 10))
+	case reflect.Float64:
+		f := value.Float()
+		if math.IsInf(f, 0) || math.IsNaN(f) {
+			return &json.UnsupportedValueError{Value: v, Str: strconv.FormatFloat(f, 'f', -1, 64)}
+		}
+		buf.Write(strconv.AppendFloat(scratch[:0], f, 'f', -1, 64))
+	default:
+		switch converted := value.Interface().(type) {
+		case time.Time:
+			format := tag.Get("timestampFormat")
+			if len(format) == 0 {
+				format = protocol.UnixTimeFormatName
+			}
+
+			ts := protocol.FormatTime(format, converted)
+			if format != protocol.UnixTimeFormatName {
+				ts = `"` + ts + `"`
+			}
+
+			buf.WriteString(ts)
+		case []byte:
+			if !value.IsNil() {
+				buf.WriteByte('"')
+				if len(converted) < 1024 {
+					// for small buffers, using Encode directly is much faster.
+					dst := make([]byte, base64.StdEncoding.EncodedLen(len(converted)))
+					base64.StdEncoding.Encode(dst, converted)
+					buf.Write(dst)
+				} else {
+					// for large buffers, avoid unnecessary extra temporary
+					// buffer space.
+					enc := base64.NewEncoder(base64.StdEncoding, buf)
+					enc.Write(converted)
+					enc.Close()
+				}
+				buf.WriteByte('"')
+			}
+		case aws.JSONValue:
+			str, err := protocol.EncodeJSONValue(converted, protocol.QuotedEscape)
+			if err != nil {
+				return fmt.Errorf("unable to encode JSONValue, %v", err)
+			}
+			buf.WriteString(str)
+		default:
+			return fmt.Errorf("unsupported JSON value %v (%s)", value.Interface(), value.Type())
+		}
+	}
+	return nil
+}
+
+var hex = "0123456789abcdef"
+
+func writeString(s string, buf *bytes.Buffer) {
+	buf.WriteByte('"')
+	for i := 0; i < len(s); i++ {
+		if s[i] == '"' {
+			buf.WriteString(`\"`)
+		} else if s[i] == '\\' {
+			buf.WriteString(`\\`)
+		} else if s[i] == '\b' {
+			buf.WriteString(`\b`)
+		} else if s[i] == '\f' {
+			buf.WriteString(`\f`)
+		} else if s[i] == '\r' {
+			buf.WriteString(`\r`)
+		} else if s[i] == '\t' {
+			buf.WriteString(`\t`)
+		} else if s[i] == '\n' {
+			buf.WriteString(`\n`)
+		} else if s[i] < 32 {
+			buf.WriteString("\\u00")
+			buf.WriteByte(hex[s[i]>>4])
+			buf.WriteByte(hex[s[i]&0xF])
+		} else {
+			buf.WriteByte(s[i])
+		}
+	}
+	buf.WriteByte('"')
+}
+
+// Returns the reflection element of a value, if it is a pointer.
+func elemOf(value reflect.Value) reflect.Value {
+	for value.Kind() == reflect.Ptr {
+		value = value.Elem()
+	}
+	return value
+}

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

@@ -0,0 +1,250 @@
+package jsonutil
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"reflect"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/private/protocol"
+)
+
+// 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.
+func UnmarshalJSONError(v interface{}, stream io.Reader) error {
+	var errBuf bytes.Buffer
+	body := io.TeeReader(stream, &errBuf)
+
+	err := json.NewDecoder(body).Decode(v)
+	if err != nil {
+		msg := "failed decoding error message"
+		if err == io.EOF {
+			msg = "error message missing"
+			err = nil
+		}
+		return awserr.NewUnmarshalError(err, msg, errBuf.Bytes())
+	}
+
+	return nil
+}
+
+// UnmarshalJSON reads a stream and unmarshals the results in object v.
+func UnmarshalJSON(v interface{}, stream io.Reader) error {
+	var out interface{}
+
+	err := json.NewDecoder(stream).Decode(&out)
+	if err == io.EOF {
+		return nil
+	} else if err != nil {
+		return err
+	}
+
+	return unmarshalAny(reflect.ValueOf(v), out, "")
+}
+
+func 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
+	}
+
+	t := tag.Get("type")
+	if t == "" {
+		switch vtype.Kind() {
+		case reflect.Struct:
+			// also it can't be a time object
+			if _, ok := value.Interface().(*time.Time); !ok {
+				t = "structure"
+			}
+		case reflect.Slice:
+			// also it can't be a byte slice
+			if _, ok := value.Interface().([]byte); !ok {
+				t = "list"
+			}
+		case reflect.Map:
+			// cannot be a JSONValue map
+			if _, ok := value.Interface().(aws.JSONValue); !ok {
+				t = "map"
+			}
+		}
+	}
+
+	switch t {
+	case "structure":
+		if field, ok := vtype.FieldByName("_"); ok {
+			tag = field.Tag
+		}
+		return unmarshalStruct(value, data, tag)
+	case "list":
+		return unmarshalList(value, data, tag)
+	case "map":
+		return unmarshalMap(value, data, tag)
+	default:
+		return unmarshalScalar(value, data, tag)
+	}
+}
+
+func unmarshalStruct(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+	if data == nil {
+		return nil
+	}
+	mapData, ok := data.(map[string]interface{})
+	if !ok {
+		return fmt.Errorf("JSON value is not a structure (%#v)", data)
+	}
+
+	t := value.Type()
+	if value.Kind() == reflect.Ptr {
+		if value.IsNil() { // create the structure if it's nil
+			s := reflect.New(value.Type().Elem())
+			value.Set(s)
+			value = s
+		}
+
+		value = value.Elem()
+		t = t.Elem()
+	}
+
+	// unwrap any payloads
+	if payload := tag.Get("payload"); payload != "" {
+		field, _ := t.FieldByName(payload)
+		return unmarshalAny(value.FieldByName(payload), data, field.Tag)
+	}
+
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		if field.PkgPath != "" {
+			continue // ignore unexported fields
+		}
+
+		// figure out what this field is called
+		name := field.Name
+		if locName := field.Tag.Get("locationName"); locName != "" {
+			name = locName
+		}
+
+		member := value.FieldByIndex(field.Index)
+		err := unmarshalAny(member, mapData[name], field.Tag)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func unmarshalList(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+	if data == nil {
+		return nil
+	}
+	listData, ok := data.([]interface{})
+	if !ok {
+		return fmt.Errorf("JSON value is not a list (%#v)", data)
+	}
+
+	if value.IsNil() {
+		l := len(listData)
+		value.Set(reflect.MakeSlice(value.Type(), l, l))
+	}
+
+	for i, c := range listData {
+		err := unmarshalAny(value.Index(i), c, "")
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func unmarshalMap(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+	if data == nil {
+		return nil
+	}
+	mapData, ok := data.(map[string]interface{})
+	if !ok {
+		return fmt.Errorf("JSON value is not a map (%#v)", data)
+	}
+
+	if value.IsNil() {
+		value.Set(reflect.MakeMap(value.Type()))
+	}
+
+	for k, v := range mapData {
+		kvalue := reflect.ValueOf(k)
+		vvalue := reflect.New(value.Type().Elem()).Elem()
+
+		unmarshalAny(vvalue, v, "")
+		value.SetMapIndex(kvalue, vvalue)
+	}
+
+	return nil
+}
+
+func unmarshalScalar(value reflect.Value, data interface{}, tag reflect.StructTag) error {
+
+	switch d := data.(type) {
+	case nil:
+		return nil // nothing to do here
+	case string:
+		switch value.Interface().(type) {
+		case *string:
+			value.Set(reflect.ValueOf(&d))
+		case []byte:
+			b, err := base64.StdEncoding.DecodeString(d)
+			if err != nil {
+				return err
+			}
+			value.Set(reflect.ValueOf(b))
+		case *time.Time:
+			format := tag.Get("timestampFormat")
+			if len(format) == 0 {
+				format = protocol.ISO8601TimeFormatName
+			}
+
+			t, err := protocol.ParseTime(format, d)
+			if err != nil {
+				return err
+			}
+			value.Set(reflect.ValueOf(&t))
+		case aws.JSONValue:
+			// No need to use escaping as the value is a non-quoted string.
+			v, err := protocol.DecodeJSONValue(d, protocol.NoEscape)
+			if err != nil {
+				return err
+			}
+			value.Set(reflect.ValueOf(v))
+		default:
+			return fmt.Errorf("unsupported value: %v (%s)", value.Interface(), value.Type())
+		}
+	case float64:
+		switch value.Interface().(type) {
+		case *int64:
+			di := int64(d)
+			value.Set(reflect.ValueOf(&di))
+		case *float64:
+			value.Set(reflect.ValueOf(&d))
+		case *time.Time:
+			// Time unmarshaled from a float64 can only be epoch seconds
+			t := time.Unix(int64(d), 0).UTC()
+			value.Set(reflect.ValueOf(&t))
+		default:
+			return fmt.Errorf("unsupported value: %v (%s)", value.Interface(), value.Type())
+		}
+	case bool:
+		switch value.Interface().(type) {
+		case *bool:
+			value.Set(reflect.ValueOf(&d))
+		default:
+			return fmt.Errorf("unsupported value: %v (%s)", value.Interface(), value.Type())
+		}
+	default:
+		return fmt.Errorf("unsupported JSON value (%v)", data)
+	}
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/jsonvalue.go

@@ -0,0 +1,76 @@
+package protocol
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"strconv"
+
+	"github.com/aws/aws-sdk-go/aws"
+)
+
+// EscapeMode is the mode that should be use for escaping a value
+type EscapeMode uint
+
+// The modes for escaping a value before it is marshaled, and unmarshaled.
+const (
+	NoEscape EscapeMode = iota
+	Base64Escape
+	QuotedEscape
+)
+
+// EncodeJSONValue marshals the value into a JSON string, and optionally base64
+// encodes the string before returning it.
+//
+// Will panic if the escape mode is unknown.
+func EncodeJSONValue(v aws.JSONValue, escape EscapeMode) (string, error) {
+	b, err := json.Marshal(v)
+	if err != nil {
+		return "", err
+	}
+
+	switch escape {
+	case NoEscape:
+		return string(b), nil
+	case Base64Escape:
+		return base64.StdEncoding.EncodeToString(b), nil
+	case QuotedEscape:
+		return strconv.Quote(string(b)), nil
+	}
+
+	panic(fmt.Sprintf("EncodeJSONValue called with unknown EscapeMode, %v", escape))
+}
+
+// DecodeJSONValue will attempt to decode the string input as a JSONValue.
+// Optionally decoding base64 the value first before JSON unmarshaling.
+//
+// Will panic if the escape mode is unknown.
+func DecodeJSONValue(v string, escape EscapeMode) (aws.JSONValue, error) {
+	var b []byte
+	var err error
+
+	switch escape {
+	case NoEscape:
+		b = []byte(v)
+	case Base64Escape:
+		b, err = base64.StdEncoding.DecodeString(v)
+	case QuotedEscape:
+		var u string
+		u, err = strconv.Unquote(v)
+		b = []byte(u)
+	default:
+		panic(fmt.Sprintf("DecodeJSONValue called with unknown EscapeMode, %v", escape))
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	m := aws.JSONValue{}
+	err = json.Unmarshal(b, &m)
+	if err != nil {
+		return nil, err
+	}
+
+	return m, nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/payload.go

@@ -0,0 +1,81 @@
+package protocol
+
+import (
+	"io"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/client/metadata"
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// PayloadUnmarshaler provides the interface for unmarshaling a payload's
+// reader into a SDK shape.
+type PayloadUnmarshaler interface {
+	UnmarshalPayload(io.Reader, interface{}) error
+}
+
+// HandlerPayloadUnmarshal implements the PayloadUnmarshaler from a
+// HandlerList. This provides the support for unmarshaling a payload reader to
+// a shape without needing a SDK request first.
+type HandlerPayloadUnmarshal struct {
+	Unmarshalers request.HandlerList
+}
+
+// UnmarshalPayload unmarshals the io.Reader payload into the SDK shape using
+// the Unmarshalers HandlerList provided. Returns an error if unable
+// unmarshaling fails.
+func (h HandlerPayloadUnmarshal) UnmarshalPayload(r io.Reader, v interface{}) error {
+	req := &request.Request{
+		HTTPRequest: &http.Request{},
+		HTTPResponse: &http.Response{
+			StatusCode: 200,
+			Header:     http.Header{},
+			Body:       ioutil.NopCloser(r),
+		},
+		Data: v,
+	}
+
+	h.Unmarshalers.Run(req)
+
+	return req.Error
+}
+
+// PayloadMarshaler provides the interface for marshaling a SDK shape into and
+// io.Writer.
+type PayloadMarshaler interface {
+	MarshalPayload(io.Writer, interface{}) error
+}
+
+// HandlerPayloadMarshal implements the PayloadMarshaler from a HandlerList.
+// This provides support for marshaling a SDK shape into an io.Writer without
+// needing a SDK request first.
+type HandlerPayloadMarshal struct {
+	Marshalers request.HandlerList
+}
+
+// MarshalPayload marshals the SDK shape into the io.Writer using the
+// Marshalers HandlerList provided. Returns an error if unable if marshal
+// fails.
+func (h HandlerPayloadMarshal) MarshalPayload(w io.Writer, v interface{}) error {
+	req := request.New(
+		aws.Config{},
+		metadata.ClientInfo{},
+		request.Handlers{},
+		nil,
+		&request.Operation{HTTPMethod: "GET"},
+		v,
+		nil,
+	)
+
+	h.Marshalers.Run(req)
+
+	if req.Error != nil {
+		return req.Error
+	}
+
+	io.Copy(w, req.GetBody())
+
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/query/build.go

@@ -0,0 +1,36 @@
+// Package query provides serialization of AWS query requests, and responses.
+package query
+
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/input/query.json build_test.go
+
+import (
+	"net/url"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/private/protocol/query/queryutil"
+)
+
+// BuildHandler is a named request handler for building query protocol requests
+var BuildHandler = request.NamedHandler{Name: "awssdk.query.Build", Fn: Build}
+
+// Build builds a request for an AWS Query service.
+func Build(r *request.Request) {
+	body := url.Values{
+		"Action":  {r.Operation.Name},
+		"Version": {r.ClientInfo.APIVersion},
+	}
+	if err := queryutil.Parse(body, r.Params, false); err != nil {
+		r.Error = awserr.New(request.ErrCodeSerialization, "failed encoding Query request", err)
+		return
+	}
+
+	if !r.IsPresigned() {
+		r.HTTPRequest.Method = "POST"
+		r.HTTPRequest.Header.Set("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")
+		r.SetBufferBody([]byte(body.Encode()))
+	} else { // This is a pre-signed request
+		r.HTTPRequest.Method = "GET"
+		r.HTTPRequest.URL.RawQuery = body.Encode()
+	}
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/query/queryutil/queryutil.go

@@ -0,0 +1,246 @@
+package queryutil
+
+import (
+	"encoding/base64"
+	"fmt"
+	"net/url"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/aws/aws-sdk-go/private/protocol"
+)
+
+// Parse parses an object i and fills a url.Values object. The isEC2 flag
+// indicates if this is the EC2 Query sub-protocol.
+func Parse(body url.Values, i interface{}, isEC2 bool) error {
+	q := queryParser{isEC2: isEC2}
+	return q.parseValue(body, reflect.ValueOf(i), "", "")
+}
+
+func elemOf(value reflect.Value) reflect.Value {
+	for value.Kind() == reflect.Ptr {
+		value = value.Elem()
+	}
+	return value
+}
+
+type queryParser struct {
+	isEC2 bool
+}
+
+func (q *queryParser) parseValue(v url.Values, value reflect.Value, prefix string, tag reflect.StructTag) error {
+	value = elemOf(value)
+
+	// no need to handle zero values
+	if !value.IsValid() {
+		return nil
+	}
+
+	t := tag.Get("type")
+	if t == "" {
+		switch value.Kind() {
+		case reflect.Struct:
+			t = "structure"
+		case reflect.Slice:
+			t = "list"
+		case reflect.Map:
+			t = "map"
+		}
+	}
+
+	switch t {
+	case "structure":
+		return q.parseStruct(v, value, prefix)
+	case "list":
+		return q.parseList(v, value, prefix, tag)
+	case "map":
+		return q.parseMap(v, value, prefix, tag)
+	default:
+		return q.parseScalar(v, value, prefix, tag)
+	}
+}
+
+func (q *queryParser) parseStruct(v url.Values, value reflect.Value, prefix string) error {
+	if !value.IsValid() {
+		return nil
+	}
+
+	t := value.Type()
+	for i := 0; i < value.NumField(); i++ {
+		elemValue := elemOf(value.Field(i))
+		field := t.Field(i)
+
+		if field.PkgPath != "" {
+			continue // ignore unexported fields
+		}
+		if field.Tag.Get("ignore") != "" {
+			continue
+		}
+
+		if protocol.CanSetIdempotencyToken(value.Field(i), field) {
+			token := protocol.GetIdempotencyToken()
+			elemValue = reflect.ValueOf(token)
+		}
+
+		var name string
+		if q.isEC2 {
+			name = field.Tag.Get("queryName")
+		}
+		if name == "" {
+			if field.Tag.Get("flattened") != "" && field.Tag.Get("locationNameList") != "" {
+				name = field.Tag.Get("locationNameList")
+			} else if locName := field.Tag.Get("locationName"); locName != "" {
+				name = locName
+			}
+			if name != "" && q.isEC2 {
+				name = strings.ToUpper(name[0:1]) + name[1:]
+			}
+		}
+		if name == "" {
+			name = field.Name
+		}
+
+		if prefix != "" {
+			name = prefix + "." + name
+		}
+
+		if err := q.parseValue(v, elemValue, name, field.Tag); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (q *queryParser) parseList(v url.Values, value reflect.Value, prefix string, tag reflect.StructTag) error {
+	// If it's empty, generate an empty value
+	if !value.IsNil() && value.Len() == 0 {
+		v.Set(prefix, "")
+		return nil
+	}
+
+	if _, ok := value.Interface().([]byte); ok {
+		return q.parseScalar(v, value, prefix, tag)
+	}
+
+	// check for unflattened list member
+	if !q.isEC2 && tag.Get("flattened") == "" {
+		if listName := tag.Get("locationNameList"); listName == "" {
+			prefix += ".member"
+		} else {
+			prefix += "." + listName
+		}
+	}
+
+	for i := 0; i < value.Len(); i++ {
+		slicePrefix := prefix
+		if slicePrefix == "" {
+			slicePrefix = strconv.Itoa(i + 1)
+		} else {
+			slicePrefix = slicePrefix + "." + strconv.Itoa(i+1)
+		}
+		if err := q.parseValue(v, value.Index(i), slicePrefix, ""); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (q *queryParser) parseMap(v url.Values, value reflect.Value, prefix string, tag reflect.StructTag) error {
+	// If it's empty, generate an empty value
+	if !value.IsNil() && value.Len() == 0 {
+		v.Set(prefix, "")
+		return nil
+	}
+
+	// check for unflattened list member
+	if !q.isEC2 && tag.Get("flattened") == "" {
+		prefix += ".entry"
+	}
+
+	// sort keys for improved serialization consistency.
+	// this is not strictly necessary for protocol support.
+	mapKeyValues := value.MapKeys()
+	mapKeys := map[string]reflect.Value{}
+	mapKeyNames := make([]string, len(mapKeyValues))
+	for i, mapKey := range mapKeyValues {
+		name := mapKey.String()
+		mapKeys[name] = mapKey
+		mapKeyNames[i] = name
+	}
+	sort.Strings(mapKeyNames)
+
+	for i, mapKeyName := range mapKeyNames {
+		mapKey := mapKeys[mapKeyName]
+		mapValue := value.MapIndex(mapKey)
+
+		kname := tag.Get("locationNameKey")
+		if kname == "" {
+			kname = "key"
+		}
+		vname := tag.Get("locationNameValue")
+		if vname == "" {
+			vname = "value"
+		}
+
+		// serialize key
+		var keyName string
+		if prefix == "" {
+			keyName = strconv.Itoa(i+1) + "." + kname
+		} else {
+			keyName = prefix + "." + strconv.Itoa(i+1) + "." + kname
+		}
+
+		if err := q.parseValue(v, mapKey, keyName, ""); err != nil {
+			return err
+		}
+
+		// serialize value
+		var valueName string
+		if prefix == "" {
+			valueName = strconv.Itoa(i+1) + "." + vname
+		} else {
+			valueName = prefix + "." + strconv.Itoa(i+1) + "." + vname
+		}
+
+		if err := q.parseValue(v, mapValue, valueName, ""); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (q *queryParser) parseScalar(v url.Values, r reflect.Value, name string, tag reflect.StructTag) error {
+	switch value := r.Interface().(type) {
+	case string:
+		v.Set(name, value)
+	case []byte:
+		if !r.IsNil() {
+			v.Set(name, base64.StdEncoding.EncodeToString(value))
+		}
+	case bool:
+		v.Set(name, strconv.FormatBool(value))
+	case int64:
+		v.Set(name, strconv.FormatInt(value, 10))
+	case int:
+		v.Set(name, strconv.Itoa(value))
+	case float64:
+		v.Set(name, strconv.FormatFloat(value, 'f', -1, 64))
+	case float32:
+		v.Set(name, strconv.FormatFloat(float64(value), 'f', -1, 32))
+	case time.Time:
+		const ISO8601UTC = "2006-01-02T15:04:05Z"
+		format := tag.Get("timestampFormat")
+		if len(format) == 0 {
+			format = protocol.ISO8601TimeFormatName
+		}
+
+		v.Set(name, protocol.FormatTime(format, value))
+	default:
+		return fmt.Errorf("unsupported value for param %s: %v (%s)", name, r.Interface(), r.Type().Name())
+	}
+	return nil
+}

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

@@ -0,0 +1,39 @@
+package query
+
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/output/query.json unmarshal_test.go
+
+import (
+	"encoding/xml"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil"
+)
+
+// UnmarshalHandler is a named request handler for unmarshaling query protocol requests
+var UnmarshalHandler = request.NamedHandler{Name: "awssdk.query.Unmarshal", Fn: Unmarshal}
+
+// UnmarshalMetaHandler is a named request handler for unmarshaling query protocol request metadata
+var UnmarshalMetaHandler = request.NamedHandler{Name: "awssdk.query.UnmarshalMeta", Fn: UnmarshalMeta}
+
+// Unmarshal unmarshals a response for an AWS Query service.
+func Unmarshal(r *request.Request) {
+	defer r.HTTPResponse.Body.Close()
+	if r.DataFilled() {
+		decoder := xml.NewDecoder(r.HTTPResponse.Body)
+		err := xmlutil.UnmarshalXML(r.Data, decoder, r.Operation.Name+"Result")
+		if err != nil {
+			r.Error = awserr.NewRequestFailure(
+				awserr.New(request.ErrCodeSerialization, "failed decoding Query response", err),
+				r.HTTPResponse.StatusCode,
+				r.RequestID,
+			)
+			return
+		}
+	}
+}
+
+// UnmarshalMeta unmarshals header response values for an AWS Query service.
+func UnmarshalMeta(r *request.Request) {
+	r.RequestID = r.HTTPResponse.Header.Get("X-Amzn-Requestid")
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/query/unmarshal_error.go

@@ -0,0 +1,69 @@
+package query
+
+import (
+	"encoding/xml"
+	"fmt"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil"
+)
+
+// UnmarshalErrorHandler is a name request handler to unmarshal request errors
+var UnmarshalErrorHandler = request.NamedHandler{Name: "awssdk.query.UnmarshalError", Fn: UnmarshalError}
+
+type xmlErrorResponse struct {
+	Code      string `xml:"Error>Code"`
+	Message   string `xml:"Error>Message"`
+	RequestID string `xml:"RequestId"`
+}
+
+type xmlResponseError struct {
+	xmlErrorResponse
+}
+
+func (e *xmlResponseError) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	const svcUnavailableTagName = "ServiceUnavailableException"
+	const errorResponseTagName = "ErrorResponse"
+
+	switch start.Name.Local {
+	case svcUnavailableTagName:
+		e.Code = svcUnavailableTagName
+		e.Message = "service is unavailable"
+		return d.Skip()
+
+	case errorResponseTagName:
+		return d.DecodeElement(&e.xmlErrorResponse, &start)
+
+	default:
+		return fmt.Errorf("unknown error response tag, %v", start)
+	}
+}
+
+// UnmarshalError unmarshals an error response for an AWS Query service.
+func UnmarshalError(r *request.Request) {
+	defer r.HTTPResponse.Body.Close()
+
+	var respErr xmlResponseError
+	err := xmlutil.UnmarshalXMLError(&respErr, r.HTTPResponse.Body)
+	if err != nil {
+		r.Error = awserr.NewRequestFailure(
+			awserr.New(request.ErrCodeSerialization,
+				"failed to unmarshal error message", err),
+			r.HTTPResponse.StatusCode,
+			r.RequestID,
+		)
+		return
+	}
+
+	reqID := respErr.RequestID
+	if len(reqID) == 0 {
+		reqID = r.RequestID
+	}
+
+	r.Error = awserr.NewRequestFailure(
+		awserr.New(respErr.Code, respErr.Message, nil),
+		r.HTTPResponse.StatusCode,
+		reqID,
+	)
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/rest/build.go

@@ -0,0 +1,310 @@
+// Package rest provides RESTful serialization of AWS requests and responses.
+package rest
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"path"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/private/protocol"
+)
+
+// Whether the byte value can be sent without escaping in AWS URLs
+var noEscape [256]bool
+
+var errValueNotSet = fmt.Errorf("value not set")
+
+var byteSliceType = reflect.TypeOf([]byte{})
+
+func init() {
+	for i := 0; i < len(noEscape); i++ {
+		// AWS expects every character except these to be escaped
+		noEscape[i] = (i >= 'A' && i <= 'Z') ||
+			(i >= 'a' && i <= 'z') ||
+			(i >= '0' && i <= '9') ||
+			i == '-' ||
+			i == '.' ||
+			i == '_' ||
+			i == '~'
+	}
+}
+
+// BuildHandler is a named request handler for building rest protocol requests
+var BuildHandler = request.NamedHandler{Name: "awssdk.rest.Build", Fn: Build}
+
+// Build builds the REST component of a service request.
+func Build(r *request.Request) {
+	if r.ParamsFilled() {
+		v := reflect.ValueOf(r.Params).Elem()
+		buildLocationElements(r, v, false)
+		buildBody(r, v)
+	}
+}
+
+// BuildAsGET builds the REST component of a service request with the ability to hoist
+// data from the body.
+func BuildAsGET(r *request.Request) {
+	if r.ParamsFilled() {
+		v := reflect.ValueOf(r.Params).Elem()
+		buildLocationElements(r, v, true)
+		buildBody(r, v)
+	}
+}
+
+func buildLocationElements(r *request.Request, v reflect.Value, buildGETQuery bool) {
+	query := r.HTTPRequest.URL.Query()
+
+	// Setup the raw path to match the base path pattern. This is needed
+	// so that when the path is mutated a custom escaped version can be
+	// stored in RawPath that will be used by the Go client.
+	r.HTTPRequest.URL.RawPath = r.HTTPRequest.URL.Path
+
+	for i := 0; i < v.NumField(); i++ {
+		m := v.Field(i)
+		if n := v.Type().Field(i).Name; n[0:1] == strings.ToLower(n[0:1]) {
+			continue
+		}
+
+		if m.IsValid() {
+			field := v.Type().Field(i)
+			name := field.Tag.Get("locationName")
+			if name == "" {
+				name = field.Name
+			}
+			if kind := m.Kind(); kind == reflect.Ptr {
+				m = m.Elem()
+			} else if kind == reflect.Interface {
+				if !m.Elem().IsValid() {
+					continue
+				}
+			}
+			if !m.IsValid() {
+				continue
+			}
+			if field.Tag.Get("ignore") != "" {
+				continue
+			}
+
+			// Support the ability to customize values to be marshaled as a
+			// blob even though they were modeled as a string. Required for S3
+			// API operations like SSECustomerKey is modeled as stirng but
+			// required to be base64 encoded in request.
+			if field.Tag.Get("marshal-as") == "blob" {
+				m = m.Convert(byteSliceType)
+			}
+
+			var err error
+			switch field.Tag.Get("location") {
+			case "headers": // header maps
+				err = buildHeaderMap(&r.HTTPRequest.Header, m, field.Tag)
+			case "header":
+				err = buildHeader(&r.HTTPRequest.Header, m, name, field.Tag)
+			case "uri":
+				err = buildURI(r.HTTPRequest.URL, m, name, field.Tag)
+			case "querystring":
+				err = buildQueryString(query, m, name, field.Tag)
+			default:
+				if buildGETQuery {
+					err = buildQueryString(query, m, name, field.Tag)
+				}
+			}
+			r.Error = err
+		}
+		if r.Error != nil {
+			return
+		}
+	}
+
+	r.HTTPRequest.URL.RawQuery = query.Encode()
+	if !aws.BoolValue(r.Config.DisableRestProtocolURICleaning) {
+		cleanPath(r.HTTPRequest.URL)
+	}
+}
+
+func buildBody(r *request.Request, v reflect.Value) {
+	if field, ok := v.Type().FieldByName("_"); ok {
+		if payloadName := field.Tag.Get("payload"); payloadName != "" {
+			pfield, _ := v.Type().FieldByName(payloadName)
+			if ptag := pfield.Tag.Get("type"); ptag != "" && ptag != "structure" {
+				payload := reflect.Indirect(v.FieldByName(payloadName))
+				if payload.IsValid() && payload.Interface() != nil {
+					switch reader := payload.Interface().(type) {
+					case io.ReadSeeker:
+						r.SetReaderBody(reader)
+					case []byte:
+						r.SetBufferBody(reader)
+					case string:
+						r.SetStringBody(reader)
+					default:
+						r.Error = awserr.New(request.ErrCodeSerialization,
+							"failed to encode REST request",
+							fmt.Errorf("unknown payload type %s", payload.Type()))
+					}
+				}
+			}
+		}
+	}
+}
+
+func buildHeader(header *http.Header, v reflect.Value, name string, tag reflect.StructTag) error {
+	str, err := convertType(v, tag)
+	if err == errValueNotSet {
+		return nil
+	} else if err != nil {
+		return awserr.New(request.ErrCodeSerialization, "failed to encode REST request", err)
+	}
+
+	name = strings.TrimSpace(name)
+	str = strings.TrimSpace(str)
+
+	header.Add(name, str)
+
+	return nil
+}
+
+func buildHeaderMap(header *http.Header, v reflect.Value, tag reflect.StructTag) error {
+	prefix := tag.Get("locationName")
+	for _, key := range v.MapKeys() {
+		str, err := convertType(v.MapIndex(key), tag)
+		if err == errValueNotSet {
+			continue
+		} else if err != nil {
+			return awserr.New(request.ErrCodeSerialization, "failed to encode REST request", err)
+
+		}
+		keyStr := strings.TrimSpace(key.String())
+		str = strings.TrimSpace(str)
+
+		header.Add(prefix+keyStr, str)
+	}
+	return nil
+}
+
+func buildURI(u *url.URL, v reflect.Value, name string, tag reflect.StructTag) error {
+	value, err := convertType(v, tag)
+	if err == errValueNotSet {
+		return nil
+	} else if err != nil {
+		return awserr.New(request.ErrCodeSerialization, "failed to encode REST request", err)
+	}
+
+	u.Path = strings.Replace(u.Path, "{"+name+"}", value, -1)
+	u.Path = strings.Replace(u.Path, "{"+name+"+}", value, -1)
+
+	u.RawPath = strings.Replace(u.RawPath, "{"+name+"}", EscapePath(value, true), -1)
+	u.RawPath = strings.Replace(u.RawPath, "{"+name+"+}", EscapePath(value, false), -1)
+
+	return nil
+}
+
+func buildQueryString(query url.Values, v reflect.Value, name string, tag reflect.StructTag) error {
+	switch value := v.Interface().(type) {
+	case []*string:
+		for _, item := range value {
+			query.Add(name, *item)
+		}
+	case map[string]*string:
+		for key, item := range value {
+			query.Add(key, *item)
+		}
+	case map[string][]*string:
+		for key, items := range value {
+			for _, item := range items {
+				query.Add(key, *item)
+			}
+		}
+	default:
+		str, err := convertType(v, tag)
+		if err == errValueNotSet {
+			return nil
+		} else if err != nil {
+			return awserr.New(request.ErrCodeSerialization, "failed to encode REST request", err)
+		}
+		query.Set(name, str)
+	}
+
+	return nil
+}
+
+func cleanPath(u *url.URL) {
+	hasSlash := strings.HasSuffix(u.Path, "/")
+
+	// clean up path, removing duplicate `/`
+	u.Path = path.Clean(u.Path)
+	u.RawPath = path.Clean(u.RawPath)
+
+	if hasSlash && !strings.HasSuffix(u.Path, "/") {
+		u.Path += "/"
+		u.RawPath += "/"
+	}
+}
+
+// EscapePath escapes part of a URL path in Amazon style
+func EscapePath(path string, encodeSep bool) string {
+	var buf bytes.Buffer
+	for i := 0; i < len(path); i++ {
+		c := path[i]
+		if noEscape[c] || (c == '/' && !encodeSep) {
+			buf.WriteByte(c)
+		} else {
+			fmt.Fprintf(&buf, "%%%02X", c)
+		}
+	}
+	return buf.String()
+}
+
+func convertType(v reflect.Value, tag reflect.StructTag) (str string, err error) {
+	v = reflect.Indirect(v)
+	if !v.IsValid() {
+		return "", errValueNotSet
+	}
+
+	switch value := v.Interface().(type) {
+	case string:
+		str = value
+	case []byte:
+		str = base64.StdEncoding.EncodeToString(value)
+	case bool:
+		str = strconv.FormatBool(value)
+	case int64:
+		str = strconv.FormatInt(value, 10)
+	case float64:
+		str = strconv.FormatFloat(value, 'f', -1, 64)
+	case time.Time:
+		format := tag.Get("timestampFormat")
+		if len(format) == 0 {
+			format = protocol.RFC822TimeFormatName
+			if tag.Get("location") == "querystring" {
+				format = protocol.ISO8601TimeFormatName
+			}
+		}
+		str = protocol.FormatTime(format, value)
+	case aws.JSONValue:
+		if len(value) == 0 {
+			return "", errValueNotSet
+		}
+		escaping := protocol.NoEscape
+		if tag.Get("location") == "header" {
+			escaping = protocol.Base64Escape
+		}
+		str, err = protocol.EncodeJSONValue(value, escaping)
+		if err != nil {
+			return "", fmt.Errorf("unable to encode JSONValue, %v", err)
+		}
+	default:
+		err := fmt.Errorf("unsupported value for param %v (%s)", v.Interface(), v.Type())
+		return "", err
+	}
+	return str, nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/rest/payload.go

@@ -0,0 +1,45 @@
+package rest
+
+import "reflect"
+
+// PayloadMember returns the payload field member of i if there is one, or nil.
+func PayloadMember(i interface{}) interface{} {
+	if i == nil {
+		return nil
+	}
+
+	v := reflect.ValueOf(i).Elem()
+	if !v.IsValid() {
+		return nil
+	}
+	if field, ok := v.Type().FieldByName("_"); ok {
+		if payloadName := field.Tag.Get("payload"); payloadName != "" {
+			field, _ := v.Type().FieldByName(payloadName)
+			if field.Tag.Get("type") != "structure" {
+				return nil
+			}
+
+			payload := v.FieldByName(payloadName)
+			if payload.IsValid() || (payload.Kind() == reflect.Ptr && !payload.IsNil()) {
+				return payload.Interface()
+			}
+		}
+	}
+	return nil
+}
+
+// PayloadType returns the type of a payload field member of i if there is one, or "".
+func PayloadType(i interface{}) string {
+	v := reflect.Indirect(reflect.ValueOf(i))
+	if !v.IsValid() {
+		return ""
+	}
+	if field, ok := v.Type().FieldByName("_"); ok {
+		if payloadName := field.Tag.Get("payload"); payloadName != "" {
+			if member, ok := v.Type().FieldByName(payloadName); ok {
+				return member.Tag.Get("type")
+			}
+		}
+	}
+	return ""
+}

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

@@ -0,0 +1,237 @@
+package rest
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/private/protocol"
+)
+
+// UnmarshalHandler is a named request handler for unmarshaling rest protocol requests
+var UnmarshalHandler = request.NamedHandler{Name: "awssdk.rest.Unmarshal", Fn: Unmarshal}
+
+// UnmarshalMetaHandler is a named request handler for unmarshaling rest protocol request metadata
+var UnmarshalMetaHandler = request.NamedHandler{Name: "awssdk.rest.UnmarshalMeta", Fn: UnmarshalMeta}
+
+// Unmarshal unmarshals the REST component of a response in a REST service.
+func Unmarshal(r *request.Request) {
+	if r.DataFilled() {
+		v := reflect.Indirect(reflect.ValueOf(r.Data))
+		unmarshalBody(r, v)
+	}
+}
+
+// UnmarshalMeta unmarshals the REST metadata of a response in a REST service
+func UnmarshalMeta(r *request.Request) {
+	r.RequestID = r.HTTPResponse.Header.Get("X-Amzn-Requestid")
+	if r.RequestID == "" {
+		// Alternative version of request id in the header
+		r.RequestID = r.HTTPResponse.Header.Get("X-Amz-Request-Id")
+	}
+	if r.DataFilled() {
+		v := reflect.Indirect(reflect.ValueOf(r.Data))
+		unmarshalLocationElements(r, v)
+	}
+}
+
+func unmarshalBody(r *request.Request, v reflect.Value) {
+	if field, ok := v.Type().FieldByName("_"); ok {
+		if payloadName := field.Tag.Get("payload"); payloadName != "" {
+			pfield, _ := v.Type().FieldByName(payloadName)
+			if ptag := pfield.Tag.Get("type"); ptag != "" && ptag != "structure" {
+				payload := v.FieldByName(payloadName)
+				if payload.IsValid() {
+					switch payload.Interface().(type) {
+					case []byte:
+						defer r.HTTPResponse.Body.Close()
+						b, err := ioutil.ReadAll(r.HTTPResponse.Body)
+						if err != nil {
+							r.Error = awserr.New(request.ErrCodeSerialization, "failed to decode REST response", err)
+						} else {
+							payload.Set(reflect.ValueOf(b))
+						}
+					case *string:
+						defer r.HTTPResponse.Body.Close()
+						b, err := ioutil.ReadAll(r.HTTPResponse.Body)
+						if err != nil {
+							r.Error = awserr.New(request.ErrCodeSerialization, "failed to decode REST response", err)
+						} else {
+							str := string(b)
+							payload.Set(reflect.ValueOf(&str))
+						}
+					default:
+						switch payload.Type().String() {
+						case "io.ReadCloser":
+							payload.Set(reflect.ValueOf(r.HTTPResponse.Body))
+						case "io.ReadSeeker":
+							b, err := ioutil.ReadAll(r.HTTPResponse.Body)
+							if err != nil {
+								r.Error = awserr.New(request.ErrCodeSerialization,
+									"failed to read response body", err)
+								return
+							}
+							payload.Set(reflect.ValueOf(ioutil.NopCloser(bytes.NewReader(b))))
+						default:
+							io.Copy(ioutil.Discard, r.HTTPResponse.Body)
+							defer r.HTTPResponse.Body.Close()
+							r.Error = awserr.New(request.ErrCodeSerialization,
+								"failed to decode REST response",
+								fmt.Errorf("unknown payload type %s", payload.Type()))
+						}
+					}
+				}
+			}
+		}
+	}
+}
+
+func unmarshalLocationElements(r *request.Request, v reflect.Value) {
+	for i := 0; i < v.NumField(); i++ {
+		m, field := v.Field(i), v.Type().Field(i)
+		if n := field.Name; n[0:1] == strings.ToLower(n[0:1]) {
+			continue
+		}
+
+		if m.IsValid() {
+			name := field.Tag.Get("locationName")
+			if name == "" {
+				name = field.Name
+			}
+
+			switch field.Tag.Get("location") {
+			case "statusCode":
+				unmarshalStatusCode(m, r.HTTPResponse.StatusCode)
+			case "header":
+				err := unmarshalHeader(m, r.HTTPResponse.Header.Get(name), field.Tag)
+				if err != nil {
+					r.Error = awserr.New(request.ErrCodeSerialization, "failed to decode REST response", err)
+					break
+				}
+			case "headers":
+				prefix := field.Tag.Get("locationName")
+				err := unmarshalHeaderMap(m, r.HTTPResponse.Header, prefix)
+				if err != nil {
+					r.Error = awserr.New(request.ErrCodeSerialization, "failed to decode REST response", err)
+					break
+				}
+			}
+		}
+		if r.Error != nil {
+			return
+		}
+	}
+}
+
+func unmarshalStatusCode(v reflect.Value, statusCode int) {
+	if !v.IsValid() {
+		return
+	}
+
+	switch v.Interface().(type) {
+	case *int64:
+		s := int64(statusCode)
+		v.Set(reflect.ValueOf(&s))
+	}
+}
+
+func unmarshalHeaderMap(r reflect.Value, headers http.Header, prefix string) error {
+	if len(headers) == 0 {
+		return nil
+	}
+	switch r.Interface().(type) {
+	case map[string]*string: // we only support string map value types
+		out := map[string]*string{}
+		for k, v := range headers {
+			k = http.CanonicalHeaderKey(k)
+			if strings.HasPrefix(strings.ToLower(k), strings.ToLower(prefix)) {
+				out[k[len(prefix):]] = &v[0]
+			}
+		}
+		if len(out) != 0 {
+			r.Set(reflect.ValueOf(out))
+		}
+
+	}
+	return nil
+}
+
+func unmarshalHeader(v reflect.Value, header string, tag reflect.StructTag) error {
+	switch tag.Get("type") {
+	case "jsonvalue":
+		if len(header) == 0 {
+			return nil
+		}
+	case "blob":
+		if len(header) == 0 {
+			return nil
+		}
+	default:
+		if !v.IsValid() || (header == "" && v.Elem().Kind() != reflect.String) {
+			return nil
+		}
+	}
+
+	switch v.Interface().(type) {
+	case *string:
+		v.Set(reflect.ValueOf(&header))
+	case []byte:
+		b, err := base64.StdEncoding.DecodeString(header)
+		if err != nil {
+			return err
+		}
+		v.Set(reflect.ValueOf(b))
+	case *bool:
+		b, err := strconv.ParseBool(header)
+		if err != nil {
+			return err
+		}
+		v.Set(reflect.ValueOf(&b))
+	case *int64:
+		i, err := strconv.ParseInt(header, 10, 64)
+		if err != nil {
+			return err
+		}
+		v.Set(reflect.ValueOf(&i))
+	case *float64:
+		f, err := strconv.ParseFloat(header, 64)
+		if err != nil {
+			return err
+		}
+		v.Set(reflect.ValueOf(&f))
+	case *time.Time:
+		format := tag.Get("timestampFormat")
+		if len(format) == 0 {
+			format = protocol.RFC822TimeFormatName
+		}
+		t, err := protocol.ParseTime(format, header)
+		if err != nil {
+			return err
+		}
+		v.Set(reflect.ValueOf(&t))
+	case aws.JSONValue:
+		escaping := protocol.NoEscape
+		if tag.Get("location") == "header" {
+			escaping = protocol.Base64Escape
+		}
+		m, err := protocol.DecodeJSONValue(header, escaping)
+		if err != nil {
+			return err
+		}
+		v.Set(reflect.ValueOf(m))
+	default:
+		err := fmt.Errorf("Unsupported value for param %v (%s)", v.Interface(), v.Type())
+		return err
+	}
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/restxml/restxml.go

@@ -0,0 +1,79 @@
+// Package restxml provides RESTful XML serialization of AWS
+// requests and responses.
+package restxml
+
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/input/rest-xml.json build_test.go
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/output/rest-xml.json unmarshal_test.go
+
+import (
+	"bytes"
+	"encoding/xml"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/private/protocol/query"
+	"github.com/aws/aws-sdk-go/private/protocol/rest"
+	"github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil"
+)
+
+// BuildHandler is a named request handler for building restxml protocol requests
+var BuildHandler = request.NamedHandler{Name: "awssdk.restxml.Build", Fn: Build}
+
+// UnmarshalHandler is a named request handler for unmarshaling restxml protocol requests
+var UnmarshalHandler = request.NamedHandler{Name: "awssdk.restxml.Unmarshal", Fn: Unmarshal}
+
+// UnmarshalMetaHandler is a named request handler for unmarshaling restxml protocol request metadata
+var UnmarshalMetaHandler = request.NamedHandler{Name: "awssdk.restxml.UnmarshalMeta", Fn: UnmarshalMeta}
+
+// UnmarshalErrorHandler is a named request handler for unmarshaling restxml protocol request errors
+var UnmarshalErrorHandler = request.NamedHandler{Name: "awssdk.restxml.UnmarshalError", Fn: UnmarshalError}
+
+// Build builds a request payload for the REST XML protocol.
+func Build(r *request.Request) {
+	rest.Build(r)
+
+	if t := rest.PayloadType(r.Params); t == "structure" || t == "" {
+		var buf bytes.Buffer
+		err := xmlutil.BuildXML(r.Params, xml.NewEncoder(&buf))
+		if err != nil {
+			r.Error = awserr.NewRequestFailure(
+				awserr.New(request.ErrCodeSerialization,
+					"failed to encode rest XML request", err),
+				0,
+				r.RequestID,
+			)
+			return
+		}
+		r.SetBufferBody(buf.Bytes())
+	}
+}
+
+// Unmarshal unmarshals a payload response for the REST XML protocol.
+func Unmarshal(r *request.Request) {
+	if t := rest.PayloadType(r.Data); t == "structure" || t == "" {
+		defer r.HTTPResponse.Body.Close()
+		decoder := xml.NewDecoder(r.HTTPResponse.Body)
+		err := xmlutil.UnmarshalXML(r.Data, decoder, "")
+		if err != nil {
+			r.Error = awserr.NewRequestFailure(
+				awserr.New(request.ErrCodeSerialization,
+					"failed to decode REST XML response", err),
+				r.HTTPResponse.StatusCode,
+				r.RequestID,
+			)
+			return
+		}
+	} else {
+		rest.Unmarshal(r)
+	}
+}
+
+// UnmarshalMeta unmarshals response headers for the REST XML protocol.
+func UnmarshalMeta(r *request.Request) {
+	rest.UnmarshalMeta(r)
+}
+
+// UnmarshalError unmarshals a response error for the REST XML protocol.
+func UnmarshalError(r *request.Request) {
+	query.UnmarshalError(r)
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/timestamp.go

@@ -0,0 +1,84 @@
+package protocol
+
+import (
+	"math"
+	"strconv"
+	"time"
+
+	"github.com/aws/aws-sdk-go/internal/sdkmath"
+)
+
+// Names of time formats supported by the SDK
+const (
+	RFC822TimeFormatName  = "rfc822"
+	ISO8601TimeFormatName = "iso8601"
+	UnixTimeFormatName    = "unixTimestamp"
+)
+
+// Time formats supported by the SDK
+// Output time is intended to not contain decimals
+const (
+	// RFC 7231#section-7.1.1.1 timetamp format. e.g Tue, 29 Apr 2014 18:30:38 GMT
+	RFC822TimeFormat = "Mon, 2 Jan 2006 15:04:05 GMT"
+
+	// This format is used for output time without seconds precision
+	RFC822OutputTimeFormat = "Mon, 02 Jan 2006 15:04:05 GMT"
+
+	// RFC3339 a subset of the ISO8601 timestamp format. e.g 2014-04-29T18:30:38Z
+	ISO8601TimeFormat = "2006-01-02T15:04:05.999999999Z"
+
+	// This format is used for output time without seconds precision
+	ISO8601OutputTimeFormat = "2006-01-02T15:04:05Z"
+)
+
+// IsKnownTimestampFormat returns if the timestamp format name
+// is know to the SDK's protocols.
+func IsKnownTimestampFormat(name string) bool {
+	switch name {
+	case RFC822TimeFormatName:
+		fallthrough
+	case ISO8601TimeFormatName:
+		fallthrough
+	case UnixTimeFormatName:
+		return true
+	default:
+		return false
+	}
+}
+
+// FormatTime returns a string value of the time.
+func FormatTime(name string, t time.Time) string {
+	t = t.UTC()
+
+	switch name {
+	case RFC822TimeFormatName:
+		return t.Format(RFC822OutputTimeFormat)
+	case ISO8601TimeFormatName:
+		return t.Format(ISO8601OutputTimeFormat)
+	case UnixTimeFormatName:
+		return strconv.FormatInt(t.Unix(), 10)
+	default:
+		panic("unknown timestamp format name, " + name)
+	}
+}
+
+// ParseTime attempts to parse the time given the format. Returns
+// the time if it was able to be parsed, and fails otherwise.
+func ParseTime(formatName, value string) (time.Time, error) {
+	switch formatName {
+	case RFC822TimeFormatName:
+		return time.Parse(RFC822TimeFormat, value)
+	case ISO8601TimeFormatName:
+		return time.Parse(ISO8601TimeFormat, value)
+	case UnixTimeFormatName:
+		v, err := strconv.ParseFloat(value, 64)
+		_, dec := math.Modf(v)
+		dec = sdkmath.Round(dec*1e3) / 1e3 //Rounds 0.1229999 to 0.123
+		if err != nil {
+			return time.Time{}, err
+		}
+		return time.Unix(int64(v), int64(dec*(1e9))), nil
+	default:
+		panic("unknown timestamp format name, " + formatName)
+	}
+}

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

@@ -0,0 +1,21 @@
+package protocol
+
+import (
+	"io"
+	"io/ioutil"
+
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// UnmarshalDiscardBodyHandler is a named request handler to empty and close a response's body
+var UnmarshalDiscardBodyHandler = request.NamedHandler{Name: "awssdk.shared.UnmarshalDiscardBody", Fn: UnmarshalDiscardBody}
+
+// UnmarshalDiscardBody is a request handler to empty a response's body and closing it.
+func UnmarshalDiscardBody(r *request.Request) {
+	if r.HTTPResponse == nil || r.HTTPResponse.Body == nil {
+		return
+	}
+
+	io.Copy(ioutil.Discard, r.HTTPResponse.Body)
+	r.HTTPResponse.Body.Close()
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil/build.go

@@ -0,0 +1,306 @@
+// Package xmlutil provides XML serialization of AWS requests and responses.
+package xmlutil
+
+import (
+	"encoding/base64"
+	"encoding/xml"
+	"fmt"
+	"reflect"
+	"sort"
+	"strconv"
+	"time"
+
+	"github.com/aws/aws-sdk-go/private/protocol"
+)
+
+// BuildXML will serialize params into an xml.Encoder. Error will be returned
+// if the serialization of any of the params or nested values fails.
+func BuildXML(params interface{}, e *xml.Encoder) error {
+	return buildXML(params, e, false)
+}
+
+func buildXML(params interface{}, e *xml.Encoder, sorted bool) error {
+	b := xmlBuilder{encoder: e, namespaces: map[string]string{}}
+	root := NewXMLElement(xml.Name{})
+	if err := b.buildValue(reflect.ValueOf(params), root, ""); err != nil {
+		return err
+	}
+	for _, c := range root.Children {
+		for _, v := range c {
+			return StructToXML(e, v, sorted)
+		}
+	}
+	return nil
+}
+
+// Returns the reflection element of a value, if it is a pointer.
+func elemOf(value reflect.Value) reflect.Value {
+	for value.Kind() == reflect.Ptr {
+		value = value.Elem()
+	}
+	return value
+}
+
+// A xmlBuilder serializes values from Go code to XML
+type xmlBuilder struct {
+	encoder    *xml.Encoder
+	namespaces map[string]string
+}
+
+// buildValue generic XMLNode builder for any type. Will build value for their specific type
+// struct, list, map, scalar.
+//
+// Also takes a "type" tag value to set what type a value should be converted to XMLNode as. If
+// type is not provided reflect will be used to determine the value's type.
+func (b *xmlBuilder) buildValue(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	value = elemOf(value)
+	if !value.IsValid() { // no need to handle zero values
+		return nil
+	} else if tag.Get("location") != "" { // don't handle non-body location values
+		return nil
+	}
+
+	t := tag.Get("type")
+	if t == "" {
+		switch value.Kind() {
+		case reflect.Struct:
+			t = "structure"
+		case reflect.Slice:
+			t = "list"
+		case reflect.Map:
+			t = "map"
+		}
+	}
+
+	switch t {
+	case "structure":
+		if field, ok := value.Type().FieldByName("_"); ok {
+			tag = tag + reflect.StructTag(" ") + field.Tag
+		}
+		return b.buildStruct(value, current, tag)
+	case "list":
+		return b.buildList(value, current, tag)
+	case "map":
+		return b.buildMap(value, current, tag)
+	default:
+		return b.buildScalar(value, current, tag)
+	}
+}
+
+// buildStruct adds a struct and its fields to the current XMLNode. All fields and any nested
+// types are converted to XMLNodes also.
+func (b *xmlBuilder) buildStruct(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	if !value.IsValid() {
+		return nil
+	}
+
+	// unwrap payloads
+	if payload := tag.Get("payload"); payload != "" {
+		field, _ := value.Type().FieldByName(payload)
+		tag = field.Tag
+		value = elemOf(value.FieldByName(payload))
+
+		if !value.IsValid() {
+			return nil
+		}
+	}
+
+	child := NewXMLElement(xml.Name{Local: tag.Get("locationName")})
+
+	// there is an xmlNamespace associated with this struct
+	if prefix, uri := tag.Get("xmlPrefix"), tag.Get("xmlURI"); uri != "" {
+		ns := xml.Attr{
+			Name:  xml.Name{Local: "xmlns"},
+			Value: uri,
+		}
+		if prefix != "" {
+			b.namespaces[prefix] = uri // register the namespace
+			ns.Name.Local = "xmlns:" + prefix
+		}
+
+		child.Attr = append(child.Attr, ns)
+	}
+
+	var payloadFields, nonPayloadFields int
+
+	t := value.Type()
+	for i := 0; i < value.NumField(); i++ {
+		member := elemOf(value.Field(i))
+		field := t.Field(i)
+
+		if field.PkgPath != "" {
+			continue // ignore unexported fields
+		}
+		if field.Tag.Get("ignore") != "" {
+			continue
+		}
+
+		mTag := field.Tag
+		if mTag.Get("location") != "" { // skip non-body members
+			nonPayloadFields++
+			continue
+		}
+		payloadFields++
+
+		if protocol.CanSetIdempotencyToken(value.Field(i), field) {
+			token := protocol.GetIdempotencyToken()
+			member = reflect.ValueOf(token)
+		}
+
+		memberName := mTag.Get("locationName")
+		if memberName == "" {
+			memberName = field.Name
+			mTag = reflect.StructTag(string(mTag) + ` locationName:"` + memberName + `"`)
+		}
+		if err := b.buildValue(member, child, mTag); err != nil {
+			return err
+		}
+	}
+
+	// Only case where the child shape is not added is if the shape only contains
+	// non-payload fields, e.g headers/query.
+	if !(payloadFields == 0 && nonPayloadFields > 0) {
+		current.AddChild(child)
+	}
+
+	return nil
+}
+
+// buildList adds the value's list items to the current XMLNode as children nodes. All
+// nested values in the list are converted to XMLNodes also.
+func (b *xmlBuilder) buildList(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	if value.IsNil() { // don't build omitted lists
+		return nil
+	}
+
+	// check for unflattened list member
+	flattened := tag.Get("flattened") != ""
+
+	xname := xml.Name{Local: tag.Get("locationName")}
+	if flattened {
+		for i := 0; i < value.Len(); i++ {
+			child := NewXMLElement(xname)
+			current.AddChild(child)
+			if err := b.buildValue(value.Index(i), child, ""); err != nil {
+				return err
+			}
+		}
+	} else {
+		list := NewXMLElement(xname)
+		current.AddChild(list)
+
+		for i := 0; i < value.Len(); i++ {
+			iname := tag.Get("locationNameList")
+			if iname == "" {
+				iname = "member"
+			}
+
+			child := NewXMLElement(xml.Name{Local: iname})
+			list.AddChild(child)
+			if err := b.buildValue(value.Index(i), child, ""); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+// buildMap adds the value's key/value pairs to the current XMLNode as children nodes. All
+// nested values in the map are converted to XMLNodes also.
+//
+// Error will be returned if it is unable to build the map's values into XMLNodes
+func (b *xmlBuilder) buildMap(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	if value.IsNil() { // don't build omitted maps
+		return nil
+	}
+
+	maproot := NewXMLElement(xml.Name{Local: tag.Get("locationName")})
+	current.AddChild(maproot)
+	current = maproot
+
+	kname, vname := "key", "value"
+	if n := tag.Get("locationNameKey"); n != "" {
+		kname = n
+	}
+	if n := tag.Get("locationNameValue"); n != "" {
+		vname = n
+	}
+
+	// sorting is not required for compliance, but it makes testing easier
+	keys := make([]string, value.Len())
+	for i, k := range value.MapKeys() {
+		keys[i] = k.String()
+	}
+	sort.Strings(keys)
+
+	for _, k := range keys {
+		v := value.MapIndex(reflect.ValueOf(k))
+
+		mapcur := current
+		if tag.Get("flattened") == "" { // add "entry" tag to non-flat maps
+			child := NewXMLElement(xml.Name{Local: "entry"})
+			mapcur.AddChild(child)
+			mapcur = child
+		}
+
+		kchild := NewXMLElement(xml.Name{Local: kname})
+		kchild.Text = k
+		vchild := NewXMLElement(xml.Name{Local: vname})
+		mapcur.AddChild(kchild)
+		mapcur.AddChild(vchild)
+
+		if err := b.buildValue(v, vchild, ""); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// buildScalar will convert the value into a string and append it as a attribute or child
+// of the current XMLNode.
+//
+// The value will be added as an attribute if tag contains a "xmlAttribute" attribute value.
+//
+// Error will be returned if the value type is unsupported.
+func (b *xmlBuilder) buildScalar(value reflect.Value, current *XMLNode, tag reflect.StructTag) error {
+	var str string
+	switch converted := value.Interface().(type) {
+	case string:
+		str = converted
+	case []byte:
+		if !value.IsNil() {
+			str = base64.StdEncoding.EncodeToString(converted)
+		}
+	case bool:
+		str = strconv.FormatBool(converted)
+	case int64:
+		str = strconv.FormatInt(converted, 10)
+	case int:
+		str = strconv.Itoa(converted)
+	case float64:
+		str = strconv.FormatFloat(converted, 'f', -1, 64)
+	case float32:
+		str = strconv.FormatFloat(float64(converted), 'f', -1, 32)
+	case time.Time:
+		format := tag.Get("timestampFormat")
+		if len(format) == 0 {
+			format = protocol.ISO8601TimeFormatName
+		}
+
+		str = protocol.FormatTime(format, converted)
+	default:
+		return fmt.Errorf("unsupported value for param %s: %v (%s)",
+			tag.Get("locationName"), value.Interface(), value.Type().Name())
+	}
+
+	xname := xml.Name{Local: tag.Get("locationName")}
+	if tag.Get("xmlAttribute") != "" { // put into current node's attribute list
+		attr := xml.Attr{Name: xname, Value: str}
+		current.Attr = append(current.Attr, attr)
+	} else { // regular text node
+		current.AddChild(&XMLNode{Name: xname, Text: str})
+	}
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil/sort.go

@@ -0,0 +1,32 @@
+package xmlutil
+
+import (
+	"encoding/xml"
+	"strings"
+)
+
+type xmlAttrSlice []xml.Attr
+
+func (x xmlAttrSlice) Len() int {
+	return len(x)
+}
+
+func (x xmlAttrSlice) Less(i, j int) bool {
+	spaceI, spaceJ := x[i].Name.Space, x[j].Name.Space
+	localI, localJ := x[i].Name.Local, x[j].Name.Local
+	valueI, valueJ := x[i].Value, x[j].Value
+
+	spaceCmp := strings.Compare(spaceI, spaceJ)
+	localCmp := strings.Compare(localI, localJ)
+	valueCmp := strings.Compare(valueI, valueJ)
+
+	if spaceCmp == -1 || (spaceCmp == 0 && (localCmp == -1 || (localCmp == 0 && valueCmp == -1))) {
+		return true
+	}
+
+	return false
+}
+
+func (x xmlAttrSlice) Swap(i, j int) {
+	x[i], x[j] = x[j], x[i]
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil/unmarshal.go

@@ -0,0 +1,291 @@
+package xmlutil
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/private/protocol"
+)
+
+// UnmarshalXMLError unmarshals the XML error from the stream into the value
+// type specified. The value must be a pointer. If the message fails to
+// unmarshal, the message content will be included in the returned error as a
+// awserr.UnmarshalError.
+func UnmarshalXMLError(v interface{}, stream io.Reader) error {
+	var errBuf bytes.Buffer
+	body := io.TeeReader(stream, &errBuf)
+
+	err := xml.NewDecoder(body).Decode(v)
+	if err != nil && err != io.EOF {
+		return awserr.NewUnmarshalError(err,
+			"failed to unmarshal error message", errBuf.Bytes())
+	}
+
+	return nil
+}
+
+// UnmarshalXML deserializes an xml.Decoder into the container v. V
+// needs to match the shape of the XML expected to be decoded.
+// If the shape doesn't match unmarshaling will fail.
+func UnmarshalXML(v interface{}, d *xml.Decoder, wrapper string) error {
+	n, err := XMLToStruct(d, nil)
+	if err != nil {
+		return err
+	}
+	if n.Children != nil {
+		for _, root := range n.Children {
+			for _, c := range root {
+				if wrappedChild, ok := c.Children[wrapper]; ok {
+					c = wrappedChild[0] // pull out wrapped element
+				}
+
+				err = parse(reflect.ValueOf(v), c, "")
+				if err != nil {
+					if err == io.EOF {
+						return nil
+					}
+					return err
+				}
+			}
+		}
+		return nil
+	}
+	return nil
+}
+
+// parse deserializes any value from the XMLNode. The type tag is used to infer the type, or reflect
+// will be used to determine the type from r.
+func parse(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	rtype := r.Type()
+	if rtype.Kind() == reflect.Ptr {
+		rtype = rtype.Elem() // check kind of actual element type
+	}
+
+	t := tag.Get("type")
+	if t == "" {
+		switch rtype.Kind() {
+		case reflect.Struct:
+			// also it can't be a time object
+			if _, ok := r.Interface().(*time.Time); !ok {
+				t = "structure"
+			}
+		case reflect.Slice:
+			// also it can't be a byte slice
+			if _, ok := r.Interface().([]byte); !ok {
+				t = "list"
+			}
+		case reflect.Map:
+			t = "map"
+		}
+	}
+
+	switch t {
+	case "structure":
+		if field, ok := rtype.FieldByName("_"); ok {
+			tag = field.Tag
+		}
+		return parseStruct(r, node, tag)
+	case "list":
+		return parseList(r, node, tag)
+	case "map":
+		return parseMap(r, node, tag)
+	default:
+		return parseScalar(r, node, tag)
+	}
+}
+
+// parseStruct deserializes a structure and its fields from an XMLNode. Any nested
+// types in the structure will also be deserialized.
+func parseStruct(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	t := r.Type()
+	if r.Kind() == reflect.Ptr {
+		if r.IsNil() { // create the structure if it's nil
+			s := reflect.New(r.Type().Elem())
+			r.Set(s)
+			r = s
+		}
+
+		r = r.Elem()
+		t = t.Elem()
+	}
+
+	// unwrap any payloads
+	if payload := tag.Get("payload"); payload != "" {
+		field, _ := t.FieldByName(payload)
+		return parseStruct(r.FieldByName(payload), node, field.Tag)
+	}
+
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		if c := field.Name[0:1]; strings.ToLower(c) == c {
+			continue // ignore unexported fields
+		}
+
+		// figure out what this field is called
+		name := field.Name
+		if field.Tag.Get("flattened") != "" && field.Tag.Get("locationNameList") != "" {
+			name = field.Tag.Get("locationNameList")
+		} else if locName := field.Tag.Get("locationName"); locName != "" {
+			name = locName
+		}
+
+		// try to find the field by name in elements
+		elems := node.Children[name]
+
+		if elems == nil { // try to find the field in attributes
+			if val, ok := node.findElem(name); ok {
+				elems = []*XMLNode{{Text: val}}
+			}
+		}
+
+		member := r.FieldByName(field.Name)
+		for _, elem := range elems {
+			err := parse(member, elem, field.Tag)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// parseList deserializes a list of values from an XML node. Each list entry
+// will also be deserialized.
+func parseList(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	t := r.Type()
+
+	if tag.Get("flattened") == "" { // look at all item entries
+		mname := "member"
+		if name := tag.Get("locationNameList"); name != "" {
+			mname = name
+		}
+
+		if Children, ok := node.Children[mname]; ok {
+			if r.IsNil() {
+				r.Set(reflect.MakeSlice(t, len(Children), len(Children)))
+			}
+
+			for i, c := range Children {
+				err := parse(r.Index(i), c, "")
+				if err != nil {
+					return err
+				}
+			}
+		}
+	} else { // flattened list means this is a single element
+		if r.IsNil() {
+			r.Set(reflect.MakeSlice(t, 0, 0))
+		}
+
+		childR := reflect.Zero(t.Elem())
+		r.Set(reflect.Append(r, childR))
+		err := parse(r.Index(r.Len()-1), node, "")
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// parseMap deserializes a map from an XMLNode. The direct children of the XMLNode
+// will also be deserialized as map entries.
+func parseMap(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	if r.IsNil() {
+		r.Set(reflect.MakeMap(r.Type()))
+	}
+
+	if tag.Get("flattened") == "" { // look at all child entries
+		for _, entry := range node.Children["entry"] {
+			parseMapEntry(r, entry, tag)
+		}
+	} else { // this element is itself an entry
+		parseMapEntry(r, node, tag)
+	}
+
+	return nil
+}
+
+// parseMapEntry deserializes a map entry from a XML node.
+func parseMapEntry(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	kname, vname := "key", "value"
+	if n := tag.Get("locationNameKey"); n != "" {
+		kname = n
+	}
+	if n := tag.Get("locationNameValue"); n != "" {
+		vname = n
+	}
+
+	keys, ok := node.Children[kname]
+	values := node.Children[vname]
+	if ok {
+		for i, key := range keys {
+			keyR := reflect.ValueOf(key.Text)
+			value := values[i]
+			valueR := reflect.New(r.Type().Elem()).Elem()
+
+			parse(valueR, value, "")
+			r.SetMapIndex(keyR, valueR)
+		}
+	}
+	return nil
+}
+
+// parseScaller deserializes an XMLNode value into a concrete type based on the
+// interface type of r.
+//
+// Error is returned if the deserialization fails due to invalid type conversion,
+// or unsupported interface type.
+func parseScalar(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
+	switch r.Interface().(type) {
+	case *string:
+		r.Set(reflect.ValueOf(&node.Text))
+		return nil
+	case []byte:
+		b, err := base64.StdEncoding.DecodeString(node.Text)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(b))
+	case *bool:
+		v, err := strconv.ParseBool(node.Text)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&v))
+	case *int64:
+		v, err := strconv.ParseInt(node.Text, 10, 64)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&v))
+	case *float64:
+		v, err := strconv.ParseFloat(node.Text, 64)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&v))
+	case *time.Time:
+		format := tag.Get("timestampFormat")
+		if len(format) == 0 {
+			format = protocol.ISO8601TimeFormatName
+		}
+
+		t, err := protocol.ParseTime(format, node.Text)
+		if err != nil {
+			return err
+		}
+		r.Set(reflect.ValueOf(&t))
+	default:
+		return fmt.Errorf("unsupported value: %v (%s)", r.Interface(), r.Type())
+	}
+	return nil
+}

vendor/github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil/xml_to_struct.go

@@ -0,0 +1,159 @@
+package xmlutil
+
+import (
+	"encoding/xml"
+	"fmt"
+	"io"
+	"sort"
+)
+
+// A XMLNode contains the values to be encoded or decoded.
+type XMLNode struct {
+	Name     xml.Name              `json:",omitempty"`
+	Children map[string][]*XMLNode `json:",omitempty"`
+	Text     string                `json:",omitempty"`
+	Attr     []xml.Attr            `json:",omitempty"`
+
+	namespaces map[string]string
+	parent     *XMLNode
+}
+
+// NewXMLElement returns a pointer to a new XMLNode initialized to default values.
+func NewXMLElement(name xml.Name) *XMLNode {
+	return &XMLNode{
+		Name:     name,
+		Children: map[string][]*XMLNode{},
+		Attr:     []xml.Attr{},
+	}
+}
+
+// AddChild adds child to the XMLNode.
+func (n *XMLNode) AddChild(child *XMLNode) {
+	child.parent = n
+	if _, ok := n.Children[child.Name.Local]; !ok {
+		n.Children[child.Name.Local] = []*XMLNode{}
+	}
+	n.Children[child.Name.Local] = append(n.Children[child.Name.Local], child)
+}
+
+// XMLToStruct converts a xml.Decoder stream to XMLNode with nested values.
+func XMLToStruct(d *xml.Decoder, s *xml.StartElement) (*XMLNode, error) {
+	out := &XMLNode{}
+	for {
+		tok, err := d.Token()
+		if err != nil {
+			if err == io.EOF {
+				break
+			} else {
+				return out, err
+			}
+		}
+
+		if tok == nil {
+			break
+		}
+
+		switch typed := tok.(type) {
+		case xml.CharData:
+			out.Text = string(typed.Copy())
+		case xml.StartElement:
+			el := typed.Copy()
+			out.Attr = el.Attr
+			if out.Children == nil {
+				out.Children = map[string][]*XMLNode{}
+			}
+
+			name := typed.Name.Local
+			slice := out.Children[name]
+			if slice == nil {
+				slice = []*XMLNode{}
+			}
+			node, e := XMLToStruct(d, &el)
+			out.findNamespaces()
+			if e != nil {
+				return out, e
+			}
+			node.Name = typed.Name
+			node.findNamespaces()
+			tempOut := *out
+			// Save into a temp variable, simply because out gets squashed during
+			// loop iterations
+			node.parent = &tempOut
+			slice = append(slice, node)
+			out.Children[name] = slice
+		case xml.EndElement:
+			if s != nil && s.Name.Local == typed.Name.Local { // matching end token
+				return out, nil
+			}
+			out = &XMLNode{}
+		}
+	}
+	return out, nil
+}
+
+func (n *XMLNode) findNamespaces() {
+	ns := map[string]string{}
+	for _, a := range n.Attr {
+		if a.Name.Space == "xmlns" {
+			ns[a.Value] = a.Name.Local
+		}
+	}
+
+	n.namespaces = ns
+}
+
+func (n *XMLNode) findElem(name string) (string, bool) {
+	for node := n; node != nil; node = node.parent {
+		for _, a := range node.Attr {
+			namespace := a.Name.Space
+			if v, ok := node.namespaces[namespace]; ok {
+				namespace = v
+			}
+			if name == fmt.Sprintf("%s:%s", namespace, a.Name.Local) {
+				return a.Value, true
+			}
+		}
+	}
+	return "", false
+}
+
+// StructToXML writes an XMLNode to a xml.Encoder as tokens.
+func StructToXML(e *xml.Encoder, node *XMLNode, sorted bool) error {
+	// Sort Attributes
+	attrs := node.Attr
+	if sorted {
+		sortedAttrs := make([]xml.Attr, len(attrs))
+		for _, k := range node.Attr {
+			sortedAttrs = append(sortedAttrs, k)
+		}
+		sort.Sort(xmlAttrSlice(sortedAttrs))
+		attrs = sortedAttrs
+	}
+
+	e.EncodeToken(xml.StartElement{Name: node.Name, Attr: attrs})
+
+	if node.Text != "" {
+		e.EncodeToken(xml.CharData([]byte(node.Text)))
+	} else if sorted {
+		sortedNames := []string{}
+		for k := range node.Children {
+			sortedNames = append(sortedNames, k)
+		}
+		sort.Strings(sortedNames)
+
+		for _, k := range sortedNames {
+			for _, v := range node.Children[k] {
+				StructToXML(e, v, sorted)
+			}
+		}
+	} else {
+		for _, c := range node.Children {
+			for _, v := range c {
+				StructToXML(e, v, sorted)
+			}
+		}
+	}
+
+	e.EncodeToken(xml.EndElement{Name: node.Name})
+	return e.Flush()
+}