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#pragma once
#include <functional>
#include <sdbusplus/bus.hpp>
#include "xyz/openbmc_project/State/Chassis/server.hpp"
namespace phosphor
{
namespace state
{
namespace manager
{
using ChassisInherit = sdbusplus::server::object::object<
sdbusplus::xyz::openbmc_project::State::server::Chassis>;
namespace sdbusRule = sdbusplus::bus::match::rules;
/** @class Chassis
* @brief OpenBMC chassis state management implementation.
* @details A concrete implementation for xyz.openbmc_project.State.Chassis
* DBus API.
*/
class Chassis : public ChassisInherit
{
public:
/** @brief Constructs Chassis State Manager
*
* @note This constructor passes 'true' to the base class in order to
* defer dbus object registration until we can run
* determineInitialState() and set our properties
*
* @param[in] bus - The Dbus bus object
* @param[in] instance - The instance of this object
* @param[in] objPath - The Dbus object path
*/
Chassis(sdbusplus::bus::bus& bus, const char* busName,
const char* objPath) :
ChassisInherit(bus, objPath, true),
bus(bus),
systemdSignals(
bus,
sdbusRule::type::signal() + sdbusRule::member("JobRemoved") +
sdbusRule::path("/org/freedesktop/systemd1") +
sdbusRule::interface("org.freedesktop.systemd1.Manager"),
std::bind(std::mem_fn(&Chassis::sysStateChange), this,
std::placeholders::_1))
{
subscribeToSystemdSignals();
determineInitialState();
// We deferred this until we could get our property correct
this->emit_object_added();
}
/** @brief Set value of RequestedPowerTransition */
Transition requestedPowerTransition(Transition value) override;
/** @brief Set value of CurrentPowerState */
PowerState currentPowerState(PowerState value) override;
private:
/** @brief Determine initial chassis state and set internally */
void determineInitialState();
/**
* @brief subscribe to the systemd signals
*
* This object needs to capture when it's systemd targets complete
* so it can keep it's state updated
*
**/
void subscribeToSystemdSignals();
/** @brief Execute the transition request
*
* This function calls the appropriate systemd target for the input
* transition.
*
* @param[in] tranReq - Transition requested
*/
void executeTransition(Transition tranReq);
/**
* @brief Determine if target is active
*
* This function determines if the target is active and
* helps prevent misleading log recorded states.
*
* @param[in] target - Target string to check on
*
* @return boolean corresponding to state active
**/
bool stateActive(const std::string& target);
/** @brief Check if systemd state change is relevant to this object
*
* Instance specific interface to handle the detected systemd state
* change
*
* @param[in] msg - Data associated with subscribed signal
*
*/
int sysStateChange(sdbusplus::message::message& msg);
/** @brief Persistent sdbusplus DBus connection. */
sdbusplus::bus::bus& bus;
/** @brief Used to subscribe to dbus systemd signals **/
sdbusplus::bus::match_t systemdSignals;
};
} // namespace manager
} // namespace state
} // namespace phosphor
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