78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
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#ifndef REPEATER_HPP_AH49FXB1
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#define REPEATER_HPP_AH49FXB1
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#include <vanetza/common/clock.hpp>
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#include <vanetza/geonet/data_request.hpp>
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#include <vanetza/geonet/packet.hpp>
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#include <functional>
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#include <list>
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#include <memory>
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namespace vanetza
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{
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// forward declaration
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class Runtime;
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namespace geonet
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{
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/**
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* Repeater eases handling of packet repetitions.
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* Packet repetitions are repeated requests with same payload.
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*/
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class Repeater
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{
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public:
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using Callback = std::function<void(const DataRequestVariant&, std::unique_ptr<DownPacket>)>;
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/**
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* Create a Repeater instance
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* \param rt runtime used for scheduling repetitions
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* \param cb callback to be invoked when repetition is due
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*/
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Repeater(Runtime& rt, const Callback& cb);
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~Repeater();
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/**
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* Add another repetition
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* \param request any kind of GeoNet data request
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* \param payload request's payload
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*/
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template<class REQUEST>
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void add(const REQUEST& request, const DownPacket& payload)
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{
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if (request.repetition) {
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add(request, *request.repetition, payload);
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}
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}
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private:
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struct Repetition
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{
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Repetition(const DataRequestVariant&, const DownPacket&);
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DataRequestVariant m_request;
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std::unique_ptr<DownPacket> m_payload;
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};
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/**
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* Add packet repetition to internal book keeping
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*/
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void add(const DataRequestVariant&, const DataRequest::Repetition&, const DownPacket&);
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/**
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* Triggered when repetition is due according to runtime
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*/
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void trigger(std::list<Repetition>::iterator, Clock::time_point);
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std::list<Repetition> m_repetitions;
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Callback m_repeat_fn;
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Runtime& m_runtime;
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};
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} // namespace geonet
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} // namespace vanetza
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#endif /* REPEATER_HPP_AH49FXB1 */
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