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Diffstat (limited to 'vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/encode.go')
-rw-r--r--vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/encode.go114
1 files changed, 0 insertions, 114 deletions
diff --git a/vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/encode.go b/vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/encode.go
deleted file mode 100644
index 150a609..0000000
--- a/vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/encode.go
+++ /dev/null
@@ -1,114 +0,0 @@
-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
-}