| | | 1 | | using System.Buffers; |
| | | 2 | | using System.Runtime.Serialization; |
| | | 3 | | using NLightning.Domain.Protocol.Interfaces; |
| | | 4 | | |
| | | 5 | | namespace NLightning.Infrastructure.Serialization.Payloads; |
| | | 6 | | |
| | | 7 | | using Domain.Channels.ValueObjects; |
| | | 8 | | using Domain.Crypto.Constants; |
| | | 9 | | using Domain.Crypto.ValueObjects; |
| | | 10 | | using Domain.Protocol.Payloads; |
| | | 11 | | using Domain.Serialization.Interfaces; |
| | | 12 | | using Exceptions; |
| | | 13 | | |
| | | 14 | | public class RevokeAndAckPayloadSerializer : IPayloadSerializer<RevokeAndAckPayload> |
| | | 15 | | { |
| | | 16 | | private readonly IValueObjectSerializerFactory _valueObjectSerializerFactory; |
| | | 17 | | |
| | 4 | 18 | | public RevokeAndAckPayloadSerializer(IValueObjectSerializerFactory valueObjectSerializerFactory) |
| | | 19 | | { |
| | 4 | 20 | | _valueObjectSerializerFactory = valueObjectSerializerFactory; |
| | 4 | 21 | | } |
| | | 22 | | |
| | | 23 | | public async Task SerializeAsync(IMessagePayload payload, Stream stream) |
| | | 24 | | { |
| | 4 | 25 | | if (payload is not RevokeAndAckPayload revokeAndAckPayload) |
| | 0 | 26 | | throw new SerializationException($"Payload is not of type {nameof(RevokeAndAckPayload)}"); |
| | | 27 | | |
| | | 28 | | // Get the value object serializer |
| | 4 | 29 | | var channelIdSerializer = |
| | 4 | 30 | | _valueObjectSerializerFactory.GetSerializer<ChannelId>() |
| | 4 | 31 | | ?? throw new SerializationException($"No serializer found for value object type {nameof(ChannelId)}"); |
| | 4 | 32 | | await channelIdSerializer.SerializeAsync(revokeAndAckPayload.ChannelId, stream); |
| | | 33 | | |
| | 4 | 34 | | await stream.WriteAsync(revokeAndAckPayload.PerCommitmentSecret); |
| | 4 | 35 | | await stream.WriteAsync(revokeAndAckPayload.NextPerCommitmentPoint); |
| | 4 | 36 | | } |
| | | 37 | | |
| | | 38 | | public async Task<RevokeAndAckPayload?> DeserializeAsync(Stream stream) |
| | | 39 | | { |
| | 4 | 40 | | var buffer = ArrayPool<byte>.Shared.Rent(CryptoConstants.CompactPubkeyLen); |
| | | 41 | | |
| | | 42 | | try |
| | | 43 | | { |
| | | 44 | | // Get the value object serializer |
| | 4 | 45 | | var channelIdSerializer = |
| | 4 | 46 | | _valueObjectSerializerFactory.GetSerializer<ChannelId>() |
| | 4 | 47 | | ?? throw new SerializationException($"No serializer found for value object type {nameof(ChannelId)}"); |
| | 4 | 48 | | var channelId = await channelIdSerializer.DeserializeAsync(stream); |
| | | 49 | | |
| | 4 | 50 | | var perCommitmentSecret = new byte[32]; |
| | 4 | 51 | | await stream.ReadExactlyAsync(perCommitmentSecret); |
| | | 52 | | |
| | 4 | 53 | | await stream.ReadExactlyAsync(buffer.AsMemory()[..CryptoConstants.CompactPubkeyLen]); |
| | 4 | 54 | | var nextPerCommitmentPoint = new CompactPubKey(buffer[..CryptoConstants.CompactPubkeyLen]); |
| | | 55 | | |
| | 4 | 56 | | return new RevokeAndAckPayload(channelId, nextPerCommitmentPoint, perCommitmentSecret); |
| | | 57 | | } |
| | 0 | 58 | | catch (Exception e) |
| | | 59 | | { |
| | 0 | 60 | | throw new PayloadSerializationException($"Error deserializing {nameof(RevokeAndAckPayload)}", e); |
| | | 61 | | } |
| | | 62 | | finally |
| | | 63 | | { |
| | 4 | 64 | | ArrayPool<byte>.Shared.Return(buffer); |
| | | 65 | | } |
| | 4 | 66 | | } |
| | | 67 | | |
| | | 68 | | async Task<IMessagePayload?> IPayloadSerializer.DeserializeAsync(Stream stream) |
| | | 69 | | { |
| | 0 | 70 | | return await DeserializeAsync(stream); |
| | 0 | 71 | | } |
| | | 72 | | } |