VOL-2496 Add "event listen" command to voltctl
Change-Id: I8f1fb34b55f56c8125142ac289e2f19fc170d804
diff --git a/vendor/github.com/Shopify/sarama/length_field.go b/vendor/github.com/Shopify/sarama/length_field.go
new file mode 100644
index 0000000..7d864f6
--- /dev/null
+++ b/vendor/github.com/Shopify/sarama/length_field.go
@@ -0,0 +1,99 @@
+package sarama
+
+import (
+ "encoding/binary"
+ "sync"
+)
+
+// LengthField implements the PushEncoder and PushDecoder interfaces for calculating 4-byte lengths.
+type lengthField struct {
+ startOffset int
+ length int32
+}
+
+var lengthFieldPool = sync.Pool{}
+
+func acquireLengthField() *lengthField {
+ val := lengthFieldPool.Get()
+ if val != nil {
+ return val.(*lengthField)
+ }
+ return &lengthField{}
+}
+
+func releaseLengthField(m *lengthField) {
+ lengthFieldPool.Put(m)
+}
+
+func (l *lengthField) decode(pd packetDecoder) error {
+ var err error
+ l.length, err = pd.getInt32()
+ if err != nil {
+ return err
+ }
+ if l.length > int32(pd.remaining()) {
+ return ErrInsufficientData
+ }
+ return nil
+}
+
+func (l *lengthField) saveOffset(in int) {
+ l.startOffset = in
+}
+
+func (l *lengthField) reserveLength() int {
+ return 4
+}
+
+func (l *lengthField) run(curOffset int, buf []byte) error {
+ binary.BigEndian.PutUint32(buf[l.startOffset:], uint32(curOffset-l.startOffset-4))
+ return nil
+}
+
+func (l *lengthField) check(curOffset int, buf []byte) error {
+ if int32(curOffset-l.startOffset-4) != l.length {
+ return PacketDecodingError{"length field invalid"}
+ }
+
+ return nil
+}
+
+type varintLengthField struct {
+ startOffset int
+ length int64
+}
+
+func (l *varintLengthField) decode(pd packetDecoder) error {
+ var err error
+ l.length, err = pd.getVarint()
+ return err
+}
+
+func (l *varintLengthField) saveOffset(in int) {
+ l.startOffset = in
+}
+
+func (l *varintLengthField) adjustLength(currOffset int) int {
+ oldFieldSize := l.reserveLength()
+ l.length = int64(currOffset - l.startOffset - oldFieldSize)
+
+ return l.reserveLength() - oldFieldSize
+}
+
+func (l *varintLengthField) reserveLength() int {
+ var tmp [binary.MaxVarintLen64]byte
+ return binary.PutVarint(tmp[:], l.length)
+}
+
+func (l *varintLengthField) run(curOffset int, buf []byte) error {
+ binary.PutVarint(buf[l.startOffset:], l.length)
+ return nil
+}
+
+func (l *varintLengthField) check(curOffset int, buf []byte) error {
+ if int64(curOffset-l.startOffset-l.reserveLength()) != l.length {
+ return PacketDecodingError{"length field invalid"}
+ }
+
+ return nil
+}