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#pragma once
#include <chrono>
#include <functional>
#include <experimental/filesystem>
#include <cereal/cereal.hpp>
#include <sdbusplus/bus.hpp>
#include <sdeventplus/clock.hpp>
#include <sdeventplus/event.hpp>
#include <sdeventplus/utility/timer.hpp>
#include "xyz/openbmc_project/State/Chassis/server.hpp"
#include "xyz/openbmc_project/State/PowerOnHours/server.hpp"
#include "config.h"
namespace phosphor
{
namespace state
{
namespace manager
{
using ChassisInherit = sdbusplus::server::object::object<
sdbusplus::xyz::openbmc_project::State::server::Chassis,
sdbusplus::xyz::openbmc_project::State::server::PowerOnHours>;
namespace sdbusRule = sdbusplus::bus::match::rules;
namespace fs = std::experimental::filesystem;
/** @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)),
pOHTimer(sdeventplus::Event::get_default(),
std::bind(&Chassis::pOHCallback, this), std::chrono::hours{1},
std::chrono::minutes{1})
{
subscribeToSystemdSignals();
restoreChassisStateChangeTime();
determineInitialState();
restorePOHCounter(); // restore POHCounter from persisted file
// 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;
/** @brief Get value of POHCounter */
using ChassisInherit::pOHCounter;
/** @brief Increment POHCounter if Chassis Power state is ON */
void startPOHCounter();
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;
/** @brief Used to Set value of POHCounter */
uint32_t pOHCounter(uint32_t value) override;
/** @brief Used by the timer to update the POHCounter */
void pOHCallback();
/** @brief Used to restore POHCounter value from persisted file */
void restorePOHCounter();
/** @brief Serialize and persist requested POH counter.
*
* @param[in] dir - pathname of file where the serialized POH counter will
* be placed.
*
* @return fs::path - pathname of persisted requested POH counter.
*/
fs::path
serializePOH(const fs::path& dir = fs::path(POH_COUNTER_PERSIST_PATH));
/** @brief Deserialize a persisted requested POH counter.
*
* @param[in] path - pathname of persisted POH counter file
* @param[in] retCounter - deserialized POH counter value
*
* @return bool - true if the deserialization was successful, false
* otherwise.
*/
bool deserializePOH(const fs::path& path, uint32_t& retCounter);
/** @brief Sets the LastStateChangeTime property and persists it. */
void setStateChangeTime();
/** @brief Serialize the last power state change time.
*
* Save the time the state changed and the state itself.
* The state needs to be saved as well so that during rediscovery
* on reboots there's a way to know not to update the time again.
*/
void serializeStateChangeTime();
/** @brief Deserialize the last power state change time.
*
* @param[out] time - Deserialized time
* @param[out] state - Deserialized power state
*
* @return bool - true if successful, false otherwise.
*/
bool deserializeStateChangeTime(uint64_t& time, PowerState& state);
/** @brief Restores the power state change time.
*
* The time is loaded into the LastStateChangeTime D-Bus property.
* On the very first start after this code has been applied but
* before the state has changed, the LastStateChangeTime value
* will be zero.
*/
void restoreChassisStateChangeTime();
/** @brief Timer used for tracking power on hours */
sdeventplus::utility::Timer<sdeventplus::ClockId::Monotonic> pOHTimer;
};
} // namespace manager
} // namespace state
} // namespace phosphor
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