int BasePacketStreamer::encode_handler(easy_request_t *r, void *packet)
{
BasePacket* bp = (BasePacket*)packet;
int32_t pcode = bp->getPCode();
int64_t length = bp->length();
TBSYS_LOG(DEBUG, "encode packet, pcode=%d, length=%ld, chid=%d", pcode, length, bp->getChannelId());
if (EASY_TYPE_CLIENT == r->ms->c->type)
{
uint32_t chid = ((easy_session_t*)r->ms)->packet_id;
bp->setChannelId(chid);
}
else
{
if (((easy_message_t*)r->ms)->status == EASY_MESG_DESTROY)
{
return EASY_ERROR;
}
if (r->retcode == EASY_ABORT)
{
r->ms->c->pool->ref--;
easy_atomic_dec(&r->ms->pool->ref);
r->retcode = EASY_OK;
}
}
easy_list_t list;
easy_list_init(&list);
Stream output(r->ms->pool, &list);
output.reserve(TFS_PACKET_HEADER_V1_SIZE + bp->length());
output.set_int32(TFS_PACKET_FLAG_V1);
char* len_pos = output.get_free(); // length() may not equal real data length
output.set_int32(bp->length());
output.set_int16(bp->getPCode());
output.set_int16(TFS_PACKET_VERSION_V2);
output.set_int64(bp->getChannelId());
output.set_int32(0); // crc, place holder
if (TFS_SUCCESS != bp->serialize(output))
{
return EASY_ERROR;
}
// use real length to replace header length
if (bp->length() != output.get_data_length() - TFS_PACKET_HEADER_V1_SIZE)
{
// help to detect serialize problem
TBSYS_LOG(DEBUG, "length()=%ld not equals to serialize()=%ld",
bp->length(), output.get_data_length() - TFS_PACKET_HEADER_V1_SIZE);
int64_t pos = 0;
Serialization::set_int32(len_pos, INT_SIZE, pos, output.get_data_length() - TFS_PACKET_HEADER_V1_SIZE);
}
easy_request_addbuf_list(r, &list);
return EASY_OK;
}
uint64_t BasePacketStreamer::get_packet_id_handler(easy_connection_t *c, void *packet) {
UNUSED(c);
int32_t packet_id = 0;
if (packet != NULL) {
BasePacket *bp = (BasePacket*)packet;
packet_id = bp->getChannelId();
}
if (packet_id == 0) {
while (packet_id == 0 || packet_id == -1) {
packet_id = (int32_t)easy_atomic32_add_return(&global_chid, 1);
}
}
return packet_id;
}
bool BasePacketStreamer::encode(tbnet::Packet* packet, tbnet::DataBuffer* output)
{
bool bret = NULL != packet && NULL != output;
if (bret)
{
tbnet::PacketHeader* header = packet->getPacketHeader();
int32_t old_len = output->getDataLen();
BasePacket* bpacket = dynamic_cast<BasePacket*>(packet);
int32_t iret = TFS_SUCCESS;
int32_t header_length = 0;
int64_t pos = 0;
//v1
if (TFS_PACKET_VERSION_V1 == bpacket->get_version())
{
TfsPacketNewHeaderV1 pheader;
pheader.crc_ = bpacket->get_crc();
pheader.flag_ = TFS_PACKET_FLAG_V1;
pheader.id_ = bpacket->get_id();
pheader.length_ = bpacket->get_data_length();
pheader.type_ = header->_pcode;
pheader.version_ = bpacket->get_version();
header_length = pheader.length();
output->ensureFree(header_length + pheader.length_);
iret = pheader.serialize(output->getFree(), output->getFreeLen(), pos);
}//v2 tbnet
else if (TFS_PACKET_VERSION_V2 == bpacket->get_version())
{
TfsPacketNewHeaderV1 pheader;
pheader.crc_ = bpacket->get_crc();
pheader.flag_ = TFS_PACKET_FLAG_V1;
pheader.id_ = bpacket->getChannelId();
pheader.length_ = bpacket->get_data_length();
pheader.type_ = header->_pcode;
pheader.version_ = bpacket->get_version();
header_length = pheader.length();
output->ensureFree(header_length + pheader.length_);
iret = pheader.serialize(output->getFree(), output->getFreeLen(), pos);
}
else//v0
{
TfsPacketNewHeaderV1 pheader;
memset(&pheader, 0, sizeof(pheader));
pheader.flag_ = TFS_PACKET_FLAG_V0;
char* header_data = reinterpret_cast<char*>(&pheader);
int32_t length = TFS_PACKET_HEADER_V0_SIZE - 2;
for (int32_t i = 0; i < length; i++)
{
pheader.version_ = static_cast<uint16_t>(*(header_data + i));
}
header_length = pheader.length();
output->ensureFree(header_length + pheader.length_);
iret = pheader.serialize(output->getFree(), output->getFreeLen(), pos);
}
bret = TFS_SUCCESS == iret;
if (bret)
{
//TBSYS_LOG(DEBUG, "pcode: %d, header length: %d, body length : %" PRI64_PREFIX "d", bpacket->getPCode(), header_length, bpacket->get_data_length());
//Func::hex_dump(output->getData(), output->getDataLen());
output->pourData(header_length);
bret = bpacket->encode(output);
//Func::hex_dump(output->getData(), output->getDataLen());
}
else
{
TBSYS_LOG(ERROR, "encode erorr, pcode: %d", header->_pcode);
output->stripData(output->getDataLen() - old_len);
}
}
return bret;
}
