Initial QSfera import

Server/vendor/github.com/segmentio/kafka-go/compression.go

@@ -0,0 +1,31 @@
+package kafka
+
+import (
+	"errors"
+
+	"github.com/segmentio/kafka-go/compress"
+)
+
+type Compression = compress.Compression
+
+const (
+	Gzip   Compression = compress.Gzip
+	Snappy Compression = compress.Snappy
+	Lz4    Compression = compress.Lz4
+	Zstd   Compression = compress.Zstd
+)
+
+type CompressionCodec = compress.Codec
+
+var (
+	errUnknownCodec = errors.New("the compression code is invalid or its codec has not been imported")
+)
+
+// resolveCodec looks up a codec by Code().
+func resolveCodec(code int8) (CompressionCodec, error) {
+	codec := compress.Compression(code).Codec()
+	if codec == nil {
+		return nil, errUnknownCodec
+	}
+	return codec, nil
+}