LSST::M1M3::SS::LimitTrigger< TcheckArgs > Class Template Reference

Abstract interface class for limiting some action to predefined execution. More...

#include <LimitTrigger.h>

Public Member Functions
void	check (TcheckArgs... args)
	Should be called from code when out of bounds conditions for triggering is detected.
virtual void	reset ()=0
	Pure virtual placeholder to reset any internal variables.

Protected Member Functions
virtual bool	trigger ()=0
	Pure virtual placeholder for check if triggering criteria are met.
virtual void	execute (TcheckArgs... args)=0
	Pure virtual placeholder for executing limited action.

Detailed Description

template<typename... TcheckArgs>
class LSST::M1M3::SS::LimitTrigger< TcheckArgs >

Abstract interface class for limiting some action to predefined execution.

This class shall be used when a large number of messages (violation of some criteria) can be send. The class can limit number of occurrences it will actually run the execute code.

Template Parameters

TcheckArgs

arguments passed to check and execute methods

Example:

class MyLimitTrigger: public LimitTrigger<const char*> {
public:
    MyLimitTrigger(int minOccurence) {
        reset();
        _minOccurence = minOccurence;
    }
 
    bool trigger() override { return ++_counter >= _minOccurence; }
    void execute(const char *msg) override { std::cout << "Executed with
message " << msg << std::endl; } void reset() override { _counter = 0; }
 
private:
    int _counter;
    int _minOccurence;
};
 
....
    MyLimitTrigger limitTrigger(10);
 
    ....
    limitTrigger.check();
    ....

Member Function Documentation

check()

template<typename... TcheckArgs>

void LSST::M1M3::SS::LimitTrigger< TcheckArgs >::check ( TcheckArgs... args )

inline

Should be called from code when out of bounds conditions for triggering is detected.

Parameters

args	arguments that will be passed to execute method if triggering conditions are met.

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execute()

template<typename... TcheckArgs>

virtual void LSST::M1M3::SS::LimitTrigger< TcheckArgs >::execute ( TcheckArgs... args )

protectedpure virtual

Pure virtual placeholder for executing limited action.

Child subclasses shall override this method and put the action (sending log message, ..) which should be executed.

Parameters

args	arguments passed to check

See also

check

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reset()

template<typename... TcheckArgs>

virtual void LSST::M1M3::SS::LimitTrigger< TcheckArgs >::reset ( )

pure virtual

Pure virtual placeholder to reset any internal variables.

Shall be called after conditions are back inside bounds and no future triggering is expected in the current system state.

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trigger()

template<typename... TcheckArgs>

virtual bool LSST::M1M3::SS::LimitTrigger< TcheckArgs >::trigger ( )

protectedpure virtual

Pure virtual placeholder for check if triggering criteria are met.

Returns

true if execute method shall be executed

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

• Utility/LimitTrigger.h