/** {@inheritDoc} */
@Nullable
@Override
public GridClientMessage decode(GridNioSession ses, ByteBuffer buf)
throws IOException, GridException {
ParserState state = ses.removeMeta(PARSER_STATE_META_NAME);
if (state == null) state = new ParserState();
PacketType type = state.packetType();
if (type == null) {
byte hdr = buf.get(buf.position());
switch (hdr) {
case MEMCACHE_REQ_FLAG:
state.packet(new GridTcpRestPacket());
state.packetType(PacketType.MEMCACHE);
break;
case GRIDGAIN_REQ_FLAG:
// Skip header.
buf.get();
state.packetType(PacketType.GRIDGAIN);
break;
default:
throw new IOException(
"Failed to parse incoming packet (invalid packet start) [ses="
+ ses
+ ", b="
+ Integer.toHexString(hdr & 0xFF)
+ ']');
}
}
GridClientMessage result = null;
switch (state.packetType()) {
case MEMCACHE:
result = parseMemcachePacket(ses, buf, state);
break;
case GRIDGAIN:
result = parseCustomPacket(ses, buf, state);
break;
}
if (result == null)
// Packet was not fully parsed yet.
ses.addMeta(PARSER_STATE_META_NAME, state);
return result;
}
/** {@inheritDoc} */
@Nullable
@Override
public Object decode(GridNioSession ses, ByteBuffer buf) throws IOException, GridException {
GridTcpCommunicationMessageAdapter msg = ses.removeMeta(MSG_META_KEY);
UUID nodeId = ses.meta(GridNioServer.DIFF_VER_NODE_ID_META_KEY);
if (msg == null && buf.hasRemaining())
msg = GridTcpCommunicationMessageFactory.create(buf.get());
boolean finished = false;
if (buf.hasRemaining()) finished = msgReader.read(nodeId, msg, buf);
if (finished) return msg;
else {
ses.addMeta(MSG_META_KEY, msg);
return null;
}
}
