()
| 60 | } |
| 61 | |
| 62 | func (h messagesHeader) compression() (codec CompressionCodec, err error) { |
| 63 | const compressionCodecMask = 0x07 |
| 64 | var code int8 |
| 65 | switch h.magic { |
| 66 | case 0, 1: |
| 67 | code = h.v1.attributes & compressionCodecMask |
| 68 | case 2: |
| 69 | code = int8(h.v2.attributes & compressionCodecMask) |
| 70 | default: |
| 71 | err = h.badMagic() |
| 72 | return |
| 73 | } |
| 74 | if code != 0 { |
| 75 | codec, err = resolveCodec(code) |
| 76 | } |
| 77 | return |
| 78 | } |
| 79 | |
| 80 | func (h messagesHeader) badMagic() error { |
| 81 | return fmt.Errorf("unsupported magic byte %d in header", h.magic) |
no test coverage detected