コード例 #1
0
        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);
            }
        }
コード例 #2
0
        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);
        }