OpenDTU-old/include/MqttHandleHuawei.h
Bernhard Kirchen 463226082f clean up Huawei MQTT handler
* bind the callback to a topic (enum value) such that there is no need
  to tokenize the full topic (string) to find out what value is being
  processed. tokenizing is expensive.
* get rid of using the config in the callback, which improves
  thread-safety since the MQTT callback is running in the MQTT thread.
* prefer C++ method stof to convert MQTT value to a float, which saves
  us from using new and delete for a buffer in particular.
* prefer switch statements over if-else-trees.
* split long lines.
* get rid of topic #defines.
* fix indention.
2023-12-30 18:41:57 +01:00

44 lines
1.2 KiB
C++

// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "Configuration.h"
#include <Huawei_can.h>
#include <espMqttClient.h>
#include <TaskSchedulerDeclarations.h>
#include <mutex>
#include <deque>
#include <functional>
class MqttHandleHuaweiClass {
public:
void init(Scheduler& scheduler);
private:
void loop();
enum class Topic : unsigned {
LimitOnlineVoltage,
LimitOnlineCurrent,
LimitOfflineVoltage,
LimitOfflineCurrent,
Mode
};
void onMqttMessage(Topic t,
const espMqttClientTypes::MessageProperties& properties,
const char* topic, const uint8_t* payload, size_t len,
size_t index, size_t total);
Task _loopTask;
uint32_t _lastPublishStats;
uint32_t _lastPublish;
// MQTT callbacks to process updates on subscribed topics are executed in
// the MQTT thread's context. we use this queue to switch processing the
// user requests into the main loop's context (TaskScheduler context).
mutable std::mutex _mqttMutex;
std::deque<std::function<void()>> _mqttCallbacks;
};
extern MqttHandleHuaweiClass MqttHandleHuawei;