public void Read(Stream source)
{
var size = source.ReadInt32();
if (size == 0)
{
return;
}
var data = ArrayPool <byte> .Shared.Rent(size);
try
{
source.Read(data, 0, size);
using var tmp = new MemoryStream(data, 0, size);
this.BaseOffset = tmp.ReadInt64();
this.BatchLength = tmp.ReadInt32();
this.PartitionLeaderEpoch = tmp.ReadInt32();
this.Magic = (byte)tmp.ReadByte();
this.Crc = tmp.ReadInt32();
var crc = (int)Crc32CHash.Compute(
data,
8 + 4 + 4 + 1 + 4,
this.BatchLength - 4 - 1 - 4);
if (crc != this.Crc)
{
throw new Exception("Corrupt message");
}
this.Attributes = tmp.ReadInt16();
this.LastOffsetDelta = tmp.ReadInt32();
this.FirstTimestamp = tmp.ReadInt64();
this.MaxTimestamp = tmp.ReadInt64();
this.ProducerId = tmp.ReadInt64();
this.ProducerEpoch = tmp.ReadInt16();
this.BaseSequence = tmp.ReadInt32();
this.Records = tmp.ReadArray <Record>();
}
finally
{
ArrayPool <byte> .Shared.Return(data);
}
}
public void Write(Stream destination)
{
using var crcSlice = MemoryStreamFactory.GetStream();
crcSlice.WriteInt16(this.Attributes);
crcSlice.WriteInt32(this.LastOffsetDelta);
crcSlice.WriteInt64(this.FirstTimestamp);
crcSlice.WriteInt64(this.MaxTimestamp);
crcSlice.WriteInt64(this.ProducerId);
crcSlice.WriteInt16(this.ProducerEpoch);
crcSlice.WriteInt32(this.BaseSequence);
crcSlice.WriteArray(this.Records);
var crcSliceLength = (int)crcSlice.Length;
this.Crc = (int)Crc32CHash.Compute(crcSlice.GetBuffer(), 0, crcSliceLength);
destination.WriteInt32(crcSliceLength + 8 + 4 + 4 + 1 + 4);
destination.WriteInt64(this.BaseOffset);
destination.WriteInt32(this.BatchLength = GetBatchSizeFromCrcSliceSize(crcSliceLength));
destination.WriteInt32(this.PartitionLeaderEpoch);
destination.WriteByte(this.Magic);
destination.WriteInt32(this.Crc);
crcSlice.WriteTo(destination);
}