mqtt::mqttintegrator::lib::Mqtt::DelayedQueue Class Reference

Collaboration diagram for mqtt::mqttintegrator::lib::Mqtt::DelayedQueue:

Classes
struct	EarlierFirst

Public Member Functions
	DelayedQueue (Mqtt *mqtt)
	~DelayedQueue ()
void	delayPublish (const utils::Timeval &delay, const iot::mqtt::packets::Publish &publish)
bool	empty () const
ScheduledPublish const &	top () const
void	pop ()

Private Member Functions
void	processDue ()
void	armDelayTimer ()

Private Attributes
Mqtt *	mqtt
std::size_t	nextSeq = 0
std::priority_queue< ScheduledPublish, std::vector< ScheduledPublish >, EarlierFirst >	minHeap
core::timer::Timer	delayTimer

Detailed Description

Definition at line 103 of file Mqtt.h.

Constructor & Destructor Documentation

DelayedQueue()

mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::DelayedQueue ( Mqtt * mqtt )

explicit

Definition at line 196 of file Mqtt.cpp.

        : mqtt(mqtt) {
    }

References mqtt.

Referenced by mqtt::mqttintegrator::lib::Mqtt::Mqtt().

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~DelayedQueue()

mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::~DelayedQueue

(

)

Definition at line 200 of file Mqtt.cpp.

                                    {
        delayTimer.cancel();
    }

References delayTimer.

Member Function Documentation

armDelayTimer()

void mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::armDelayTimer ( )

private

Definition at line 217 of file Mqtt.cpp.

                                         {
        delayTimer.cancel();
 
        auto delay = top().when - utils::Timeval::currentTime();
        if (delay < utils::Timeval{}) {
            delay = utils::Timeval{};
        }
 
        delayTimer = core::timer::Timer::singleshotTimer(
            [this]() {
                processDue();
 
                if (!empty()) {
                    armDelayTimer();
                }
            },
            delay);
    }

References armDelayTimer(), delayTimer, empty(), processDue(), top(), and mqtt::mqttintegrator::lib::Mqtt::ScheduledPublish::when.

Referenced by armDelayTimer(), and delayPublish().

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delayPublish()

void mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::delayPublish	(	const utils::Timeval &	delay,
		const iot::mqtt::packets::Publish &	publish )

Definition at line 236 of file Mqtt.cpp.

                                                                                                       {
        minHeap.emplace(utils::Timeval::currentTime() + delay, nextSeq++, publish, delay);
        armDelayTimer();
    }

References armDelayTimer(), minHeap, and nextSeq.

Referenced by mqtt::mqttintegrator::lib::Mqtt::onPublish().

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empty()

bool mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::empty

(

)

const

Definition at line 241 of file Mqtt.cpp.

                                       {
        return minHeap.empty();
    }

References minHeap.

Referenced by armDelayTimer(), and processDue().

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pop()

void mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::pop

(

)

Definition at line 249 of file Mqtt.cpp.

                               {
        minHeap.pop();
    }

References minHeap.

Referenced by processDue().

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processDue()

void mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::processDue ( )

private

Definition at line 204 of file Mqtt.cpp.

                                      {
        const auto now = utils::Timeval::currentTime();
 
        while (!empty() && top().when <= now) {
            const iot::mqtt::packets::Publish duePublish = top().publish;
            pop();
 
            mqtt->sendPublish(duePublish.getTopic(), duePublish.getMessage(), duePublish.getQoS(), duePublish.getRetain());
 
            mqtt->onPublish(duePublish);
        }
    }

References empty(), mqtt, mqtt::mqttintegrator::lib::Mqtt::onPublish(), pop(), mqtt::mqttintegrator::lib::Mqtt::ScheduledPublish::publish, top(), and mqtt::mqttintegrator::lib::Mqtt::ScheduledPublish::when.

Referenced by armDelayTimer().

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top()

Mqtt::ScheduledPublish const & mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::top

(

)

const

Definition at line 245 of file Mqtt.cpp.

                                                            {
        return minHeap.top();
    }

References minHeap.

Referenced by armDelayTimer(), and processDue().

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Member Data Documentation

delayTimer

core::timer::Timer mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::delayTimer

private

Definition at line 124 of file Mqtt.h.

Referenced by armDelayTimer(), and ~DelayedQueue().

minHeap

std::priority_queue<ScheduledPublish, std::vector<ScheduledPublish>, EarlierFirst> mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::minHeap

private

Definition at line 122 of file Mqtt.h.

Referenced by delayPublish(), empty(), pop(), and top().

mqtt

Mqtt* mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::mqtt

private

Definition at line 120 of file Mqtt.h.

Referenced by DelayedQueue(), and processDue().

nextSeq

std::size_t mqtt::mqttintegrator::lib::Mqtt::DelayedQueue::nextSeq = 0

private

Definition at line 121 of file Mqtt.h.

Referenced by delayPublish().

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

• mqttintegrator/lib/Mqtt.h
• mqttintegrator/lib/Mqtt.cpp