presence/anyof.hpp

#pragma once

#include <functional>
#include <vector>
#include "fan.hpp"
#include "rpolicy.hpp"

namespace phosphor
{
namespace fan
{
namespace presence
{

class PresenceSensor;

/**
 * @class AnyOf
 * @brief AnyOf redundancy policy.
 *
 * The any of redundancy policy monitors all sensor
 * states in the redundancy set and reports true when any
 * sensor in the set reports true.
 */
class AnyOf : public RedundancyPolicy
{
    public:
        AnyOf() = delete;
        AnyOf(const AnyOf&) = default;
        AnyOf& operator=(const AnyOf&) = default;
        AnyOf(AnyOf&&) = default;
        AnyOf& operator=(AnyOf&&) = default;
        ~AnyOf() = default;

        /**
         * @brief Construct an any of bitwise policy.
         *
         * @param[in] fan - The fan associated with the policy.
         * @param[in] s - The set of sensors associated with the policy.
         */
        AnyOf(
                const Fan& fan,
                const std::vector<std::reference_wrapper<PresenceSensor>>& s);

        /**
         * @brief stateChanged
         *
         * Update the inventory and execute the fallback
         * policy.
         *
         * @param[in] present - The new presence state according
         *             to the specified sensor.
         * @param[in] sensor - The sensor reporting the new state.
         */
        void stateChanged(bool present, PresenceSensor& sensor) override;

        /**
         * @brief monitor
         *
         * Start monitoring the fan.
         */
        void monitor() override;

    private:

        /** @brief All presence sensors in the redundancy set. */
        std::vector<
            std::tuple<
                std::reference_wrapper<PresenceSensor>,
                bool>> state;
};

} // namespace presence
} // namespace fan
} // namespace phosphor