public AmpMessage Decode(IBufferReader reader)
{
if (reader.ReadableBytes == 0)
{
return(null);
}
AmpMessage msg = new AmpMessage();
if (reader.ReadableBytes < 10)
{
throw new Rpc.Exceptions.RpcCodecException("消息不正确,小于头长度");
}
msg.Version = reader.ReadByte();
int length = reader.ReadInt();
msg.Sequence = reader.ReadInt();
byte type = reader.ReadByte();
msg.InvokeMessageType = InvokeMessageTypeParser.Parse(type);
msg.ServiceId = reader.ReadUShort();
msg.MessageId = reader.ReadUShort();
int left = length - 14;
if (left > 0)
{
if (left > reader.ReadableBytes)
{
throw new Rpc.Exceptions.RpcCodecException("消息长度不正确");
}
msg.Data = new byte[left];
reader.ReadBytes(msg.Data);
}
return(msg);
}
public AmpMessage Decode(IBufferReader reader)
{
if (reader.ReadableBytes == 0)
{
return(null);
}
AmpMessage msg = new AmpMessage();
if (reader.ReadableBytes < AmpMessage.HEAD_LENGTH)
{
throw new Rpc.Exceptions.RpcCodecException($"decode error ,ReadableBytes={reader.ReadableBytes},HEAD_LENGTH={AmpMessage.HEAD_LENGTH}");
}
msg.Version = reader.ReadByte();
int length = reader.ReadInt();
msg.Sequence = reader.ReadInt();
byte type = reader.ReadByte();
msg.InvokeMessageType = Rpc.Utils.ParseUtils.ParseMessageType(type);
msg.ServiceId = reader.ReadUShort();
msg.MessageId = reader.ReadUShort();
msg.Code = reader.ReadInt();
int left = length - AmpMessage.HEAD_LENGTH;
if (left > 0)
{
if (left > reader.ReadableBytes)
{
throw new Rpc.Exceptions.RpcCodecException("消息长度不正确");
}
msg.Data = new byte[left];
reader.ReadBytes(msg.Data);
}
return(msg);
}
public AmpMessage Parse(IBufferReader reader)
{
if (reader.ReadableBytes == 0)
{
return(null);
}
var msg = new AmpMessage {
Version = reader.ReadByte()
};
int headLength;
if (msg.Version == 0)
{
headLength = AmpMessage.VERSION_0_HEAD_LENGTH;
if (reader.ReadableBytes < AmpMessage.VERSION_0_HEAD_LENGTH - 1)
{
throw new RpcCodecException($"decode error ,ReadableBytes={reader.ReadableBytes+1},HEAD_LENGTH={AmpMessage.VERSION_0_HEAD_LENGTH}");
}
}
else if (msg.Version == 1)
{
headLength = AmpMessage.VERSION_1_HEAD_LENGTH;
if (reader.ReadableBytes < AmpMessage.VERSION_1_HEAD_LENGTH - 1)
{
throw new RpcCodecException($"decode error ,ReadableBytes={reader.ReadableBytes+1},HEAD_LENGTH={AmpMessage.VERSION_1_HEAD_LENGTH}");
}
}
else
{
throw new RpcCodecException($"decode error ,{msg.Version} is not support");
}
var length = reader.ReadInt();
msg.Sequence = reader.ReadInt();
var type = reader.ReadByte();
msg.InvokeMessageType = (InvokeMessageType)Enum.ToObject(typeof(InvokeMessageType), type);
msg.ServiceId = msg.Version == 0 ? reader.ReadUShort() : reader.ReadInt();
msg.MessageId = reader.ReadUShort();
msg.Code = reader.ReadInt();
if (msg.Version == 1)
{
byte codeType = reader.ReadByte();
if (codeType != this._serializer.CodecType)
{
throw new RpcCodecException($"CodecType:{codeType} is not Match {this._serializer.CodecType}");
}
msg.CodecType = (CodecType)Enum.ToObject(typeof(CodecType), codeType);
}
else
{
msg.CodecType = CodecType.Protobuf;
}
int left = length - headLength;
if (left > 0)
{
if (left > reader.ReadableBytes)
{
throw new RpcCodecException("message not long enough!");
}
msg.Data = new byte[left];
reader.ReadBytes(msg.Data);
}
return(msg);
}
