Fork of the excellent esp8266-react - https://github.com/rjwats/esp8266-react
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137 lines
3.4 KiB
137 lines
3.4 KiB
#ifndef StatefulService_h
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#define StatefulService_h
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#include <Arduino.h>
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#include <JsonDeserializer.h>
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#include <JsonSerializer.h>
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#include <list>
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#include <functional>
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#ifdef ESP32
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#include <freertos/FreeRTOS.h>
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#include <freertos/semphr.h>
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#endif
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typedef size_t update_handler_id_t;
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typedef std::function<void(String originId)> StateUpdateCallback;
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static update_handler_id_t currentUpdatedHandlerId;
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typedef struct StateUpdateHandlerInfo {
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update_handler_id_t _id;
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StateUpdateCallback _cb;
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bool _allowRemove;
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StateUpdateHandlerInfo(StateUpdateCallback cb, bool allowRemove) :
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_id(++currentUpdatedHandlerId), _cb(cb), _allowRemove(allowRemove){};
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} StateUpdateHandlerInfo_t;
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template <class T>
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class StatefulService {
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public:
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template <typename... Args>
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#ifdef ESP32
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StatefulService(Args&&... args) :
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_state(std::forward<Args>(args)...), _accessMutex(xSemaphoreCreateRecursiveMutex()) {
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}
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#else
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StatefulService(Args&&... args) : _state(std::forward<Args>(args)...) {
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}
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#endif
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update_handler_id_t addUpdateHandler(StateUpdateCallback cb, bool allowRemove = true) {
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if (!cb) {
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return 0;
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}
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StateUpdateHandlerInfo_t updateHandler(cb, allowRemove);
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_updateHandlers.push_back(updateHandler);
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return updateHandler._id;
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}
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void removeUpdateHandler(update_handler_id_t id) {
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for (auto i = _updateHandlers.begin(); i != _updateHandlers.end();) {
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if ((*i)._allowRemove && (*i)._id == id) {
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i = _updateHandlers.erase(i);
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} else {
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++i;
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}
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}
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}
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void updateWithoutPropagation(std::function<void(T&)> callback) {
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#ifdef ESP32
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xSemaphoreTakeRecursive(_accessMutex, portMAX_DELAY);
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#endif
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callback(_state);
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#ifdef ESP32
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xSemaphoreGiveRecursive(_accessMutex);
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#endif
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}
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void updateWithoutPropagation(JsonObject& jsonObject, JsonDeserializer<T> deserializer) {
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#ifdef ESP32
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xSemaphoreTakeRecursive(_accessMutex, portMAX_DELAY);
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#endif
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deserializer(jsonObject, _state);
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#ifdef ESP32
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xSemaphoreGiveRecursive(_accessMutex);
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#endif
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}
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void update(std::function<void(T&)> callback, String originId) {
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#ifdef ESP32
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xSemaphoreTakeRecursive(_accessMutex, portMAX_DELAY);
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#endif
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callback(_state);
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callUpdateHandlers(originId);
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#ifdef ESP32
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xSemaphoreGiveRecursive(_accessMutex);
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#endif
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}
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void update(JsonObject& jsonObject, JsonDeserializer<T> deserializer, String originId) {
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#ifdef ESP32
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xSemaphoreTakeRecursive(_accessMutex, portMAX_DELAY);
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#endif
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deserializer(jsonObject, _state);
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callUpdateHandlers(originId);
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#ifdef ESP32
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xSemaphoreGiveRecursive(_accessMutex);
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#endif
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}
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void read(std::function<void(T&)> callback) {
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#ifdef ESP32
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xSemaphoreTakeRecursive(_accessMutex, portMAX_DELAY);
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#endif
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callback(_state);
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#ifdef ESP32
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xSemaphoreGiveRecursive(_accessMutex);
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#endif
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}
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void read(JsonObject& jsonObject, JsonSerializer<T> serializer) {
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#ifdef ESP32
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xSemaphoreTakeRecursive(_accessMutex, portMAX_DELAY);
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#endif
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serializer(_state, jsonObject);
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#ifdef ESP32
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xSemaphoreGiveRecursive(_accessMutex);
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#endif
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}
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void callUpdateHandlers(String originId) {
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for (const StateUpdateHandlerInfo_t& updateHandler : _updateHandlers) {
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updateHandler._cb(originId);
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}
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}
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protected:
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T _state;
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private:
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#ifdef ESP32
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SemaphoreHandle_t _accessMutex;
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#endif
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std::list<StateUpdateHandlerInfo_t> _updateHandlers;
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};
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#endif // end StatefulService_h
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