| 93 | } |
| 94 | |
| 95 | func versionedDecode(buf []byte, in versionedDecoder, version int16, metricRegistry metrics.Registry) error { |
| 96 | if buf == nil { |
| 97 | return nil |
| 98 | } |
| 99 | |
| 100 | helper := prepareFlexibleDecoder(&realDecoder{ |
| 101 | raw: buf, |
| 102 | registry: metricRegistry, |
| 103 | }, in, version) |
| 104 | err := in.decode(helper, version) |
| 105 | if err != nil { |
| 106 | return err |
| 107 | } |
| 108 | |
| 109 | if remaining := helper.remaining(); remaining != 0 { |
| 110 | return PacketDecodingError{ |
| 111 | Info: fmt.Sprintf("invalid length len=%d remaining=%d", len(buf), remaining), |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | return nil |
| 116 | } |
| 117 | |
| 118 | func prepareFlexibleDecoder(pd *realDecoder, in versionedDecoder, version int16) packetDecoder { |
| 119 | if flexibleDecoder, ok := in.(flexibleVersion); ok && flexibleDecoder.isFlexibleVersion(version) { |