event_loop_engine.h

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/* * NRP Core - Backend infrastructure to synchronize simulations
 *
 * Copyright 2020-2023 NRP Team
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This project has received funding from the European Union’s Horizon 2020
 * Framework Programme for Research and Innovation under the Specific Grant
 * Agreement No. 945539 (Human Brain Project SGA3).
 */
 
#ifndef EVENT_LOOP_ENGINE_H
#define EVENT_LOOP_ENGINE_H
 
#include "nrp_mqtt_proxy/nrp_mqtt_proxy.h"
#include "nrp_event_loop/event_loop/event_loop_interface.h"
#include "nrp_grpc_engine_protocol/engine_server/engine_proto_wrapper.h"
#include "nrp_protobuf/engine_grpc.pb.h"
 
#include <nlohmann/json.hpp>
 
class EventLoopEngine : public EventLoopInterface
{
    using mutex_t = std::timed_mutex;
    using lock_t  = std::unique_lock<EventLoopEngine::mutex_t>;
 
    public:
 
        EventLoopEngine(std::chrono::milliseconds timestep, std::chrono::milliseconds timestepThres,
                        size_t storeCapacity, bool doProcessLast,
                        const nlohmann::json &engineConfig, EngineProtoWrapper* engineWrapper);
 
        ~EventLoopEngine();
 
    protected:
 
        void initializeCB() override;
 
        void runLoopCB() override;
 
        void shutdownCB() override;
 
    private:
 
        void topic_callback(const std::string& dpName, const std::string& msgStr);
 
        std::map<std::string, std::vector<EngineGrpc::DataPackMessage>> _datapackStore;
        std::shared_ptr<EngineGrpc::DataPackMessage> _datapackPub;
        size_t _storeCapacity;
        bool _doProcessLast;
        std::vector<std::string> _datapackNames;
        NRPMQTTProxy* _mqttProxy;
 
        std::unique_ptr<EngineProtoWrapper> _engineWrapper;
 
        std::string datapackTopicSet(const std::string& dpName);
 
        std::string datapackTopicGet(const std::string& dpName);
 
        nlohmann::json _engineConfig;
        mutex_t _datapackLock;
 
};
 
 
#endif // EVENT_LOOP_ENGINE_H