uniot::CallbackMQTTDevice Class Reference

#include <CallbackMQTTDevice.h>

Inheritance diagram for uniot::CallbackMQTTDevice:

Public Types
using	Handler = std::function<void(MQTTDevice *device, const String &topic, const Bytes &payload)>
	Function type for MQTT message handlers.

Public Member Functions
	CallbackMQTTDevice (Handler handler)
	Constructs a CallbackMQTTDevice with the specified message handler.
Public Member Functions inherited from uniot::MQTTDevice
	MQTTDevice ()
	Constructs a new MQTTDevice instance.
virtual	~MQTTDevice ()
	Virtual destructor that handles cleanup and unregistration from MQTTKit.
const String &	getDeviceId () const
	Gets the device identifier.
const String &	getOwnerId () const
	Gets the owner identifier.
const String &	subscribe (const String &topic)
	Subscribes to a specific MQTT topic.
const String &	subscribeDevice (const String &subTopic)
	Subscribes to a device-specific subtopic.
const String &	subscribeGroup (const String &groupId, const String &subTopic)
	Subscribes to a group-specific subtopic.
bool	unsubscribe (const String &topic)
	Unsubscribes from a specific topic.
virtual void	syncSubscriptions ()=0
	Reconstructs subscriptions after reconnection or credential changes.
void	unsubscribeFromAll ()
	Unsubscribes from all subscribed topics.
bool	isSubscribed (const String &topic)
	Checks if the device is subscribed to a given topic.
bool	isTopicMatch (const String &storedTopic, const String &incomingTopic) const
	Determines if a stored topic matches an incoming topic string using MQTT wildcards.
void	publish (const String &topic, const Bytes &payload, bool retained=false, bool sign=false)
	Publishes a message to a specific topic.
void	publishDevice (const String &subTopic, const Bytes &payload, bool retained=false, bool sign=false)
	Publishes a message to a device-specific subtopic.
void	publishGroup (const String &groupId, const String &subTopic, const Bytes &payload, bool retained=false, bool sign=false)
	Publishes a message to a group-specific subtopic.
void	publishEmptyDevice (const String &subTopic)
	Publishes an empty message to a device-specific subtopic with retained flag set.

Protected Member Functions
void	handle (const String &topic, const Bytes &payload) override
	Handles incoming MQTT messages by delegating to the callback function.

Protected Attributes
Handler	mHandler
	The user-provided message handler function.

Member Typedef Documentation

Handler

using uniot::CallbackMQTTDevice::Handler = std::function<void(MQTTDevice *device, const String &topic, const Bytes &payload)>

Function type for MQTT message handlers.

Parameters

device	Pointer to the MQTT device that received the message
topic	The MQTT topic the message was received on
payload	The message payload as bytes

Constructor & Destructor Documentation

CallbackMQTTDevice()

uniot::CallbackMQTTDevice::CallbackMQTTDevice ( Handler handler )

inline

Constructs a CallbackMQTTDevice with the specified message handler.

Parameters

handler

The callback function that will process incoming MQTT messages

Member Function Documentation

handle()

void uniot::CallbackMQTTDevice::handle ( const String & topic, const Bytes & payload )

inlineoverrideprotectedvirtual

Handles incoming MQTT messages by delegating to the callback function.

This method overrides the base class implementation to log the topic and invoke the user-provided handler function.

Parameters

topic	The MQTT topic the message was received on
payload	The message payload as bytes

Implements uniot::MQTTDevice.

Member Data Documentation

mHandler

Handler uniot::CallbackMQTTDevice::mHandler

protected

The user-provided message handler function.

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The documentation for this class was generated from the following file:

• CallbackMQTTDevice.h