feat: implement gateway exporter task

Author: AndreaGiulianelli

room_control_unit/src/app/logic/fsm/gatewayexporter/GatewayExporter.cpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2023 Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+#include "GatewayExporter.h"
+#include "../../../../utils/ArrayStream.h"
+#include "../../presenter/serializer/JsonSerializer.h"
+
+GatewayExporter::GatewayExporter(const int period, GatewayExporterContext* const context): AbstractFsm(period) {
+    this->changeState(new E(context));
+}
+
+/*
+##############################################################################
+------------------State of GatewayExporter FSM ---------------
+##############################################################################
+*/
+
+GatewayExporter::E::E(GatewayExporterContext* const context): context(context) {
+    this->serializer = new JsonSerializer();
+}
+
+void GatewayExporter::E::run(Fsm* const parentFsm) {
+    const int eventListSize = this->context->eventList->size();
+    if(eventListSize != 0) {
+        ArrayStream<Event*>(this->context->eventList->toArray(), eventListSize)
+            .foreach([this](Event* ev) {this->context->externalGatewayInterface->send(this->serializer->serialize(ev));});
+        this->context->eventList->clear(true);
+    }
+}

room_control_unit/src/app/logic/fsm/gatewayexporter/GatewayExporter.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2023 Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+#ifndef __GATEWAY_EXPORTER__
+#define __GATEWAY_EXPORTER__
+
+#include "../AbstractFsm.h"
+#include "../../../model/event/Event.h"
+#include "../../baseio/communication/ExternalGateway.h"
+#include "../../../../utils/List.h"
+
+struct GatewayExporterContext {
+    List<Event*>* const eventList;
+    ExternalGateway* const externalGatewayInterface;
+};
+
+/*
+    Gateway Exporter task.
+    Its main objective is to send data (associated to the internal event) to the system gateway.
+*/
+class GatewayExporter: public AbstractFsm {
+    public:
+        /*
+            Constructor.
+
+            @param period the period of the fsm.
+            @param context the local context of the fsm.
+        */
+        GatewayExporter(int period, GatewayExporterContext* context);
+    
+    private:
+        class E: public State {
+            public:
+                E(GatewayExporterContext* context);
+                void run(Fsm* parentFsm);
+            private:
+                GatewayExporterContext* const context;
+                Serializer* serializer;
+        };
+
+};
+
+
+#endif