mirror of
https://github.com/meshtastic/firmware.git
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d4e6dd32c5
* Added downstream JSON MQTT handling. * Added uplink JSON messaging * Fixed shadow variable. * Added missing dependency. * Fixes Environment -> Telemetry. * Fixed native issue. * Added json11 pio reg dependency. * Fixed json11 library dependency. Co-authored-by: Sacha Weatherstone <sachaw100@hotmail.com>
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
#pragma once
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#include "configuration.h"
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#include "concurrency/OSThread.h"
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#include "mesh/Channels.h"
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#include <PubSubClient.h>
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#include <WiFiClient.h>
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/**
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* Our wrapper/singleton for sending/receiving MQTT "udp" packets. This object isolates the MQTT protocol implementation from
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* the two components that use it: MQTTPlugin and MQTTSimInterface.
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*/
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class MQTT : private concurrency::OSThread
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{
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// supposedly the current version is busted:
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// http://www.iotsharing.com/2017/08/how-to-use-esp32-mqtts-with-mqtts-mosquitto-broker-tls-ssl.html
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// WiFiClientSecure wifiClient;
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WiFiClient mqttClient;
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PubSubClient pubSub;
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// instead we supress sleep from our runOnce() callback
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// CallbackObserver<MQTT, void *> preflightSleepObserver = CallbackObserver<MQTT, void *>(this, &MQTT::preflightSleepCb);
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public:
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MQTT();
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/**
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* Publish a packet on the glboal MQTT server.
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* This hook must be called **after** the packet is encrypted (including the channel being changed to a hash).
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* @param chIndex the index of the channel for this message
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*
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* Note: for messages we are forwarding on the mesh that we can't find the channel for (because we don't have the keys), we
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* can not forward those messages to the cloud - becuase no way to find a global channel ID.
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*/
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void onSend(const MeshPacket &mp, ChannelIndex chIndex);
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/** Attempt to connect to server if necessary
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*/
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void reconnect();
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protected:
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virtual int32_t runOnce() override;
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private:
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/** return true if we have a channel that wants uplink/downlink
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*/
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bool wantsLink() const;
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/** Tell the server what subscriptions we want (based on channels.downlink_enabled)
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*/
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void sendSubscriptions();
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/// Just C glue to call onPublish
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static void mqttCallback(char *topic, byte *payload, unsigned int length);
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/// Called when a new publish arrives from the MQTT server
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void onPublish(char *topic, byte *payload, unsigned int length);
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/// Called when a new publish arrives from the MQTT server
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String downstreamPacketToJson(MeshPacket *mp);
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/// Return 0 if sleep is okay, veto sleep if we are connected to pubsub server
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// int preflightSleepCb(void *unused = NULL) { return pubSub.connected() ? 1 : 0; }
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};
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void mqttInit();
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extern MQTT *mqtt;
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