app/watchdog_service.hpp

#pragma once
#include <ipmid/utils.hpp>
#include <sdbusplus/bus.hpp>
#include <xyz/openbmc_project/State/Watchdog/server.hpp>

/** @class WatchdogService
 *  @brief Access to the running OpenBMC watchdog implementation.
 *  @details Easy accessor for servers that implement the
 *  xyz.openbmc_project.State.Watchdog DBus API.
 */
class WatchdogService
{
  public:
    WatchdogService();

    using Action =
        sdbusplus::xyz::openbmc_project::State::server::Watchdog::Action;
    using TimerUse =
        sdbusplus::xyz::openbmc_project::State::server::Watchdog::TimerUse;

    /** @brief Resets the time remaining on the watchdog.
     *         Equivalent to setTimeRemaining(getInterval()).
     *         Optionally enables the watchdog.
     *
     *  @param[in] enableWatchdog - Should the call also enable the watchdog
     */
    void resetTimeRemaining(bool enableWatchdog);

    /** @brief Contains a copy of the properties enumerated by the
     *         watchdog service.
     */
    struct Properties
    {
        bool initialized;
        bool enabled;
        Action expireAction;
        TimerUse timerUse;
        TimerUse expiredTimerUse;
        uint64_t interval;
        uint64_t timeRemaining;
    };

    /** @brief Retrieves a copy of the currently set properties on the
     *         host watchdog
     *
     *  @return A populated WatchdogProperties struct
     */
    Properties getProperties();

    /** @brief Get the value of the initialized property on the host
     *         watchdog
     *
     *  @return The value of the property
     */
    bool getInitialized();

    /** @brief Sets the value of the initialized property on the host
     *         watchdog
     *
     *  @param[in] initialized - The new initializedvalue
     */
    void setInitialized(bool initialized);

    /** @brief Sets the value of the enabled property on the host watchdog
     *
     *  @param[in] enabled - The new enabled value
     */
    void setEnabled(bool enabled);

    /** @brief Sets the value of the expireAction property on the host watchdog
     *
     *  @param[in] expireAction - The new expireAction value
     */
    void setExpireAction(Action expireAction);

    /** @brief Sets the value of the timerUse property on the host watchdog
     *
     *  @param[in] timerUse - The new timerUse value
     */
    void setTimerUse(TimerUse timerUse);

    /** @brief Sets the value of the ExpiredTimerUse property on the host
     * watchdog
     *
     *  @param[in] timerUse - The new timerUse value
     */
    void setExpiredTimerUse(TimerUse timerUse);

    /** @brief Sets the value of the interval property on the host watchdog
     *
     *  @param[in] interval - The new interval value
     */
    void setInterval(uint64_t interval);

    /** @brief Sets the value of the timeRemaining property on the host
     *         watchdog
     *
     *  @param[in] timeRemaining - The new timeRemaining value
     */
    void setTimeRemaining(uint64_t timeRemaining);

  private:
    /** @brief sdbusplus handle */
    sdbusplus::bus::bus bus;
    /** @brief The name of the mapped host watchdog service */
    static ipmi::ServiceCache wd_service;

    /** @brief Gets the value of the property on the host watchdog
     *
     *  @param[in] key - The name of the property
     *  @return The value of the property
     */
    template <typename T>
    T getProperty(const std::string& key);

    /** @brief Sets the value of the property on the host watchdog
     *
     *  @param[in] key - The name of the property
     *  @param[in] val - The new value
     */
    template <typename T>
    void setProperty(const std::string& key, const T& val);
};