Move-only RAII wrapper that pairs a SubscriberToken with an unsubscribe callable. Destroying a Subscription automatically cancels it. More...

#include <Subscription.hpp>

Public Member Functions
	Subscription () noexcept=default
	Default-construct an inactive Subscription.
	Subscription (SubscriberToken token, std::function< void()> unsubscribe)
	Construct from a token and an unsubscribe callable.
	Subscription (Subscription &&other) noexcept
	Move constructor.
Subscription &	operator= (Subscription &&other) noexcept
	Move assignment operator.
	Subscription (const Subscription &)=delete
Subscription &	operator= (const Subscription &)=delete
	~Subscription ()
	Destructor — automatically cancels an active subscription.
void	cancel () noexcept
	Cancel the subscription. Safe to call multiple times (idempotent).
bool	isActive () const noexcept
	Check whether this subscription is still active.
SubscriberToken	token () const noexcept
	Access the underlying token (e.g. for logging or debugging).

Detailed Description

Move-only RAII wrapper that pairs a SubscriberToken with an unsubscribe callable. Destroying a Subscription automatically cancels it.

Observables (MeasurementManager, Logger, …) return a Subscription from their subscribe methods. The holder can call cancel() explicitly or simply let the Subscription go out of scope.

Constructor & Destructor Documentation

◆ Subscription()

eduart::subscription::Subscription::Subscription	(	SubscriberToken	token,
		std::function< void()>	unsubscribe )

inline

Construct from a token and an unsubscribe callable.

Parameters

[in]	token	The token identifying the subscription.
[in]	unsubscribe	Callable that removes the subscription from the observable.

Member Function Documentation

◆ isActive()

bool eduart::subscription::Subscription::isActive ( ) const

inlinenoexcept

Check whether this subscription is still active.

Returns: true if the subscription has not been cancelled.

◆ token()

SubscriberToken eduart::subscription::Subscription::token ( ) const