| | | 1 | | using System.Buffers; |
| | | 2 | | using System.Runtime.Serialization; |
| | | 3 | | using NBitcoin; |
| | | 4 | | using NLightning.Domain.Serialization.Payloads; |
| | | 5 | | |
| | | 6 | | namespace NLightning.Infrastructure.Serialization.Payloads; |
| | | 7 | | |
| | | 8 | | using Domain.Crypto.Constants; |
| | | 9 | | using Domain.Protocol.Payloads; |
| | | 10 | | using Domain.Protocol.Payloads.Interfaces; |
| | | 11 | | using Domain.Serialization.Factories; |
| | | 12 | | using Domain.ValueObjects; |
| | | 13 | | using Exceptions; |
| | | 14 | | |
| | | 15 | | public class RevokeAndAckPayloadSerializer : IPayloadSerializer<RevokeAndAckPayload> |
| | | 16 | | { |
| | | 17 | | private readonly IValueObjectSerializerFactory _valueObjectSerializerFactory; |
| | | 18 | | |
| | 4 | 19 | | public RevokeAndAckPayloadSerializer(IValueObjectSerializerFactory valueObjectSerializerFactory) |
| | | 20 | | { |
| | 4 | 21 | | _valueObjectSerializerFactory = valueObjectSerializerFactory; |
| | 4 | 22 | | } |
| | | 23 | | |
| | | 24 | | public async Task SerializeAsync(IMessagePayload payload, Stream stream) |
| | | 25 | | { |
| | 4 | 26 | | if (payload is not RevokeAndAckPayload revokeAndAckPayload) |
| | 0 | 27 | | throw new SerializationException($"Payload is not of type {nameof(RevokeAndAckPayload)}"); |
| | | 28 | | |
| | | 29 | | // Get the value object serializer |
| | 4 | 30 | | var channelIdSerializer = |
| | 4 | 31 | | _valueObjectSerializerFactory.GetSerializer<ChannelId>() |
| | 4 | 32 | | ?? throw new SerializationException($"No serializer found for value object type {nameof(ChannelId)}"); |
| | 4 | 33 | | await channelIdSerializer.SerializeAsync(revokeAndAckPayload.ChannelId, stream); |
| | | 34 | | |
| | 4 | 35 | | await stream.WriteAsync(revokeAndAckPayload.PerCommitmentSecret); |
| | 4 | 36 | | await stream.WriteAsync(revokeAndAckPayload.NextPerCommitmentPoint.ToBytes()); |
| | 4 | 37 | | } |
| | | 38 | | |
| | | 39 | | public async Task<RevokeAndAckPayload?> DeserializeAsync(Stream stream) |
| | | 40 | | { |
| | 4 | 41 | | var buffer = ArrayPool<byte>.Shared.Rent(CryptoConstants.PUBKEY_LEN); |
| | | 42 | | |
| | | 43 | | try |
| | | 44 | | { |
| | | 45 | | // Get the value object serializer |
| | 4 | 46 | | var channelIdSerializer = |
| | 4 | 47 | | _valueObjectSerializerFactory.GetSerializer<ChannelId>() |
| | 4 | 48 | | ?? throw new SerializationException($"No serializer found for value object type {nameof(ChannelId)}"); |
| | 4 | 49 | | var channelId = await channelIdSerializer.DeserializeAsync(stream); |
| | | 50 | | |
| | 4 | 51 | | var perCommitmentSecret = new byte[32]; |
| | 4 | 52 | | await stream.ReadExactlyAsync(perCommitmentSecret); |
| | | 53 | | |
| | 4 | 54 | | await stream.ReadExactlyAsync(buffer.AsMemory()[..CryptoConstants.PUBKEY_LEN]); |
| | 4 | 55 | | var nextPerCommitmentPoint = new PubKey(buffer[..CryptoConstants.PUBKEY_LEN]); |
| | | 56 | | |
| | 4 | 57 | | return new RevokeAndAckPayload(channelId, nextPerCommitmentPoint, perCommitmentSecret); |
| | | 58 | | } |
| | 0 | 59 | | catch (Exception e) |
| | | 60 | | { |
| | 0 | 61 | | throw new PayloadSerializationException($"Error deserializing {nameof(RevokeAndAckPayload)}", e); |
| | | 62 | | } |
| | | 63 | | finally |
| | | 64 | | { |
| | 4 | 65 | | ArrayPool<byte>.Shared.Return(buffer); |
| | | 66 | | } |
| | 4 | 67 | | } |
| | | 68 | | |
| | | 69 | | async Task<IMessagePayload?> IPayloadSerializer.DeserializeAsync(Stream stream) |
| | | 70 | | { |
| | 0 | 71 | | return await DeserializeAsync(stream); |
| | 0 | 72 | | } |
| | | 73 | | } |