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#pragma once
#include <sdbusplus/bus.hpp>
#include "xyz/openbmc_project/State/Host/server.hpp"
namespace phosphor
{
namespace state
{
namespace manager
{
/** @class Host
* @brief OpenBMC host state management implementation.
* @details A concrete implementation for xyz.openbmc_project.State.Host
* DBus API.
*/
class Host : public sdbusplus::server::object::object<
sdbusplus::xyz::openbmc_project::State::server::Host>
{
public:
/** @brief Constructs Host 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] busName - The Dbus name to own
* @param[in] objPath - The Dbus object path
*/
Host(sdbusplus::bus::bus& bus,
const char* busName,
const char* objPath) :
sdbusplus::server::object::object<
sdbusplus::xyz::openbmc_project::State::server::Host>(
bus, objPath, true),
bus(bus),
stateSignal(bus,
"type='signal',member='GotoSystemState'",
handleSysStateChange,
this)
{
// Will throw exception on fail
determineInitialState();
// We deferred this until we could get our property correct
this->emit_object_added();
}
/**
* @brief Determine initial host state and set internally
*
* @return Will throw exceptions on failure
**/
void determineInitialState();
/** @brief Set value of HostTransition */
Transition requestedHostTransition(Transition value) override;
/** @brief Set value of CurrentHostState */
HostState currentHostState(HostState value) override;
private:
/** @brief Execute the transition request
*
* This function assumes the state has been validated and the host
* is in an appropriate state for the transition to be started.
*
* @param[in] tranReq - Transition requested
*/
void executeTransition(Transition tranReq);
/** @brief Callback function on system state changes
*
* Check if the state is relevant to the Host and if so, update
* corresponding host object's state
*
* @param[in] msg - Data associated with subscribed signal
* @param[in] userData - Pointer to this object instance
* @param[in] retError - Return error data
*
*/
static int handleSysStateChange(sd_bus_message* msg,
void* userData,
sd_bus_error* retError);
/** @brief Persistent sdbusplus DBus bus connection. */
sdbusplus::bus::bus& bus;
/** @brief Used to subscribe to dbus system state changes */
sdbusplus::server::match::match stateSignal;
};
} // namespace manager
} // namespace state
} // namespace phosphor
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