/// <exception cref="System.IO.IOException"/>
public virtual void ReadFields(ByteBuffer buf)
{
packetLen = buf.GetInt();
short protoLen = buf.GetShort();
byte[] data = new byte[protoLen];
buf.Get(data);
proto = DataTransferProtos.PacketHeaderProto.ParseFrom(data);
}
/// <exception cref="System.IO.IOException"/>
public virtual void ReadFields(DataInputStream @in)
{
this.packetLen = @in.ReadInt();
short protoLen = @in.ReadShort();
byte[] data = new byte[protoLen];
@in.ReadFully(data);
proto = DataTransferProtos.PacketHeaderProto.ParseFrom(data);
}
public PacketHeader(int packetLen, long offsetInBlock, long seqno, bool lastPacketInBlock
, int dataLen, bool syncBlock)
{
this.packetLen = packetLen;
Preconditions.CheckArgument(packetLen >= Ints.Bytes, "packet len %s should always be at least 4 bytes"
, packetLen);
DataTransferProtos.PacketHeaderProto.Builder builder = DataTransferProtos.PacketHeaderProto
.NewBuilder().SetOffsetInBlock(offsetInBlock).SetSeqno(seqno).SetLastPacketInBlock
(lastPacketInBlock).SetDataLen(dataLen);
if (syncBlock)
{
// Only set syncBlock if it is specified.
// This is wire-incompatible with Hadoop 2.0.0-alpha due to HDFS-3721
// because it changes the length of the packet header, and BlockReceiver
// in that version did not support variable-length headers.
builder.SetSyncBlock(syncBlock);
}
proto = ((DataTransferProtos.PacketHeaderProto)builder.Build());
}
/// <exception cref="Com.Google.Protobuf.InvalidProtocolBufferException"/>
public virtual void SetFieldsFromData(int packetLen, byte[] headerData)
{
this.packetLen = packetLen;
proto = DataTransferProtos.PacketHeaderProto.ParseFrom(headerData);
}
