C++ ObPacket::get_session_id方法代码示例

    int ObClientManager::send_request(const ObServer& server, const int32_t pcode, const int32_t version, 
        const int64_t timeout, ObDataBuffer& in_buffer, ObDataBuffer& out_buffer, int64_t& session_id) const
    {
      int rc = OB_SUCCESS;

      ObPacket* response = NULL;
      rc = do_send_request(server, pcode, version, timeout, in_buffer, response);

      // deserialize response packet to out_buffer
      if (OB_SUCCESS == rc && NULL != response)
      {
        session_id = response->get_session_id() ; // TODO
        // copy response's inner_buffer to out_buffer.
        int64_t data_length = response->get_data_length();
        ObDataBuffer* response_buffer = response->get_buffer();
        if (out_buffer.get_remain() < data_length)
        {
          TBSYS_LOG(ERROR, "insufficient memory in out_buffer, remain:%ld, length=%ld",
              out_buffer.get_remain(), data_length);
          rc = OB_ERROR;
        }
        else
        {
          memcpy(out_buffer.get_data() + out_buffer.get_position(),
              response_buffer->get_data() + response_buffer->get_position(),
              data_length);
          out_buffer.get_position() += data_length;
        }

      }

      return rc;
    }

int ObMsSqlRpcEvent::deserialize_packet(ObPacket & packet, ObNewScanner & result)
{
  ObDataBuffer * data_buff = NULL;
  int ret = packet.deserialize();
  if (ret != OB_SUCCESS)
  {
    TBSYS_LOG(WARN, "deserialize the packet failed:ret[%d]", ret);
  }
  else
  {
    data_buff = packet.get_buffer();
    if (NULL == data_buff)
    {
      ret = OB_INNER_STAT_ERROR;
      TBSYS_LOG(WARN, "check packet data buff failed:buff[%p]", data_buff);
    }
    if (packet.get_packet_code() == OB_SESSION_END)
    {
      /// when session end, set session id to 0
      set_session_end();
    }
    else
    {
      set_session_id(packet.get_session_id());
    }
  }

  ObResultCode code;
  if (OB_SUCCESS == ret)
  {
    ret = code.deserialize(data_buff->get_data(), data_buff->get_capacity(),
        data_buff->get_position());
    if (OB_SUCCESS != ret)
    {
      TBSYS_LOG(ERROR, "deserialize result failed:pos[%ld], ret[%d]",
          data_buff->get_position(), ret);
    }
    else
    {
      ObCommonSqlRpcEvent::set_result_code(code.result_code_);
    }
  }
  ///
  result.clear();
  if ((OB_SUCCESS == ret) && (OB_SUCCESS == code.result_code_))
  {
    ret = result.deserialize(data_buff->get_data(), data_buff->get_capacity(),
        data_buff->get_position());
    if (ret != OB_SUCCESS)
    {
      TBSYS_LOG(WARN, "deserialize scanner failed:pos[%ld], ret[%d]",
          data_buff->get_position(), ret);
    }
  }
  return ret;
}

int ObMsSqlRpcEvent::handle_packet(ObPacket * packet, void * args)
{
  int ret = OB_SUCCESS;
  if (ObMergeServerMain::get_instance()->get_merge_server().is_stoped())
  {
    TBSYS_LOG(WARN, "server stoped, cannot handle anything.");
    ret = OB_ERROR;
  }
  else
  {
    /// stat event process time
    this->end();
    /// parse the packet for get result code and result scanner
    ret = parse_packet(packet, args);
    if (ret != OB_SUCCESS)
    {
      TBSYS_LOG(WARN, "parse packet from server[%s] failed, request_id[%lu], event_id[%lu], rpc_event[%p]",
          server_.to_cstring(), client_request_id_, get_event_id(), this);
      /// set result code, maybe timeout packet, connection errors.
      if (NULL != args && 1 == reinterpret_cast<easy_connection_t*>(args)->conn_has_error)
      {
        ObCommonSqlRpcEvent::set_result_code(OB_CONN_ERROR);
      }
      else
      {
        ObCommonSqlRpcEvent::set_result_code(ret);
      }
    }

    ObPacket* obpacket = packet;
    if (NULL != obpacket)
    {
      TBSYS_LOG(DEBUG, "get packet from server[%s] success, event_id[%lu], time_used[%ld],"
          "result code=%d, packet code=%d, session_id=%ld",
          server_.to_cstring(), get_event_id(), get_time_used(), get_result_code(),
          obpacket->get_packet_code(), obpacket->get_session_id());
    }
    //lock_.lock();
    if (client_request_ == NULL)
    {
      TBSYS_LOG(WARN, "rpc event(%p) unknown status, destroy myself, event_id[%lu] "
          "request_id[%lu], req_type[%d]",
          this, this->get_event_id(), this->get_client_id(), this->get_req_type());
      this->~ObMsSqlRpcEvent();
      ob_tc_free(this);
    }
    else
    {
      /// no matter parse succ or failed push to finish queue
      /// not check the event valid only push to the finish queue
      if (OB_SUCCESS != (ret = client_request_->signal(*this)))
      {
        TBSYS_LOG(WARN, "failed to push event to finish queue, destroy myself, req_type[%s], request_id[%lu], ret=%d",
            (this->get_req_type() == SCAN_RPC) ? "SCAN":"GET", this->get_client_id(), ret);
        OB_ASSERT(magic_ == 0x1234abcd);
        this->~ObMsSqlRpcEvent();
        ob_tc_free(this);
      }
      else
      {
        //OB_ASSERT(magic_ == 0x1234abcd);
        //lock_.unlock();
      }
    }
  }
  return ret;
}