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Diffstat (limited to 'src/components/protocol_handler/include/protocol_handler/multiframe_builder.h')
-rw-r--r-- | src/components/protocol_handler/include/protocol_handler/multiframe_builder.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/components/protocol_handler/include/protocol_handler/multiframe_builder.h b/src/components/protocol_handler/include/protocol_handler/multiframe_builder.h new file mode 100644 index 0000000000..6ccf891b38 --- /dev/null +++ b/src/components/protocol_handler/include/protocol_handler/multiframe_builder.h @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2015, Ford Motor Company + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following + * disclaimer in the documentation and/or other materials provided with the + * distribution. + * + * Neither the name of the Ford Motor Company nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef SRC_COMPONENTS_PROTOCOL_HANDLER_INCLUDE_PROTOCOL_HANDLER_MULTIFRAME_BUILDER_H_ +#define SRC_COMPONENTS_PROTOCOL_HANDLER_INCLUDE_PROTOCOL_HANDLER_MULTIFRAME_BUILDER_H_ + +#include <map> +#include <ostream> // std::basic_ostream +#include <iterator> // std::ostream_iterator +#include <algorithm> // std::copy + +#include "utils/date_time.h" +#include "protocol_handler/protocol_packet.h" + +/** + *\namespace protocol_handlerHandler + *\brief Namespace for SmartDeviceLink ProtocolHandler related functionality. + */ +namespace protocol_handler { +/** + * \brief Session identifier - contains connection identifier and + * session_id from protocol (can be used as hash) + */ +// TODO(EZamakhov): move SessionID to protocol_handler/protocol_packet.h +typedef uint8_t SessionID; +/** + * \brief Message identifier - unique to the session messages + */ +// TODO(EZamakhov): move MessageID to protocol_handler/session_observer.h +typedef uint32_t MessageID; + +struct ProtocolFrameData { + ProtocolFramePtr frame; + TimevalStruct append_time; +}; +/** + *\brief Map of frames with last frame data for messages received in multiple frames. + */ +typedef std::map<MessageID, ProtocolFrameData> MessageIDToFrameMap; +/** + *\brief Map of frames with last frame data for messages received in multiple frames. + */ +typedef std::map<SessionID, MessageIDToFrameMap> SessionToFrameMap; +/** + *\brief Map of frames with last frame data for messages received in multiple frames. + */ +typedef std::map<ConnectionID, SessionToFrameMap> MultiFrameMap; + +/** + * \class MultiFrameBuilder + * \brief Class for assembling consecutive frames according to + * messageID to complete multiframes. + */ +class MultiFrameBuilder { + public: + /** + * @brief Constructor + */ + MultiFrameBuilder(); + + /** + *\brief Set timeout of waiting CONSECUTIVE frames + */ + void set_waiting_timeout(const uint32_t consecutive_frame_wait_msecs); + + /** + * @brief Add connection for pending data + * @return true on success + */ + bool AddConnection(const ConnectionID connection_id); + + /** + * @brief Clear all data related to connection_id + * @return true on success + */ + bool RemoveConnection(const ConnectionID connection_id); + + /** + *\brief Pop assembled and expired frames + */ + ProtocolFramePtrList PopMultiframes(); + + /** + *\brief Handle Single or Consecutive frame + * @return RESULT_OK on success, or RESULT_FAIL in case of any error + */ + RESULT_CODE AddFrame(const ProtocolFramePtr packet); + + private: + RESULT_CODE HandleFirstFrame(const ProtocolFramePtr packet); + RESULT_CODE HandleConsecutiveFrame(const ProtocolFramePtr packet); + + // Map of frames with last frame data for messages received in multiple frames. + MultiFrameMap multiframes_map_; + int64_t consecutive_frame_wait_msecs_; +}; + +template<typename _CharT> +std::basic_ostream<_CharT>& operator<<(std::basic_ostream<_CharT>& stream, + const protocol_handler::MultiFrameMap& map) { + if (map.empty()) { + stream << "{empty}"; + return stream; + } + for (MultiFrameMap::const_iterator connection_it = map.begin(); + connection_it != map.end(); ++connection_it) { + const SessionToFrameMap& session_map = connection_it->second; + + for (SessionToFrameMap::const_iterator session_it = session_map.begin(); + session_it != session_map.end(); ++session_it) { + const MessageIDToFrameMap& messageId_map = session_it->second; + + for (MessageIDToFrameMap::const_iterator messageId_it = messageId_map.begin(); + messageId_it != messageId_map.end(); ++messageId_it) { + const ProtocolFrameData& frame_data = messageId_it->second; + + stream << "ConnectionID: " << connection_it->first + << ", SessionID: " << static_cast<uint32_t>(session_it->first) + << ", MessageID: " << static_cast<uint32_t>(messageId_it->first) + << " msec, frame: " << frame_data.frame << std::endl; + } + } + } + return stream; +} + +} // namespace protocol_handler +#endif // SRC_COMPONENTS_PROTOCOL_HANDLER_INCLUDE_PROTOCOL_HANDLER_MULTIFRAME_BUILDER_H_ |