79 lines
1.4 KiB
C++
79 lines
1.4 KiB
C++
#ifndef SENSOR3_DATA_H
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#define SENSOR3_DATA_H
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#include "base.h"
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#include <ArduinoJson.h>
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#include "wifi.h"
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#include "mqtt.h"
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struct IData {
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virtual void toJson(JsonObject &json) const = 0;
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};
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template<typename Data>
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using ExtendsIData = std::enable_if_t<std::is_base_of_v<IData, Data>>;
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template<typename T, int size>
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class Cache {
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private:
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struct Entry {
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time_t timestamp = 0;
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T data;
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};
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Entry buffer[size];
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Entry *bufferRead = buffer;
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Entry *bufferWrite = buffer;
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size_t usage = 0;
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public:
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template<typename U = T, typename = ExtendsIData<U>>
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explicit Cache() {
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// -
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}
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bool add(const time_t timestamp, const T &data) {
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if (usage >= size) {
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return false;
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}
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bufferWrite->timestamp = timestamp;
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bufferWrite->data = data;
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bufferWrite = (bufferWrite - buffer + 1) % size + buffer;
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usage++;
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return true;
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}
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void loop() {
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if (usage == 0 || !isTimeSet()) {
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return;
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}
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JsonDocument doc;
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JsonObject json = doc.to<JsonObject>();
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json["timestamp"] = correctTime(bufferRead->timestamp);
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bufferRead->data.toJson(json);
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if (mqttPublishData(json)) {
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bufferRead = (bufferRead - buffer + 1) % size + buffer;
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usage--;
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}
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}
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[[nodiscard]] size_t getUsage() const {
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return usage;
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}
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[[nodiscard]] size_t getSize() const {
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return size;
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}
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};
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#endif
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