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#pragma once
#include <map>
#include <set>
#include <vector>
#include <sdbusplus/bus.hpp>
#include <sdbusplus/server/interface.hpp>
#include <sdbusplus/server/manager.hpp>
namespace phosphor
{
namespace led
{
/** @class Group
* @brief Manages group of LEDs and applies action on the elements of group
*/
class Group
{
public:
/** @brief Define possible actions on a given LED.
* For the BLINK operation, follow 50-50 duty cycle
*/
enum Action
{
OFF,
ON,
BLINK,
};
Group() = delete;
~Group() = default;
Group(const Group&) = delete;
Group& operator=(const Group&) = delete;
Group(Group&&) = delete;
Group& operator=(Group&&) = delete;
/** @brief Constructs LED manager
*
* @param[in] busName - The Dbus name to own
* @param[in] objPath - The Dbus path that hosts LED manager
* @param[in] intfName - The Dbus interface
*/
Group(const char* busName, const char* objPath, const char* intfName);
/** @brief Name of the LED and it's proposed action.
* This structure is supplied as configuration at build time
*/
struct LedAction
{
std::string name;
Action action;
// Needed for inserting elements into sets
bool operator<(const LedAction& right) const
{
if (name == right.name)
{
return action < right.action;
}
return name < right.name;
}
};
/** @brief For finding intersection */
static bool ledComp(const LedAction& left, const LedAction& right)
{
return left.name < right.name;
}
using group = std::set<LedAction>;
/** @brief static global map constructed at compile time */
static const std::map<std::string, group> ledMap;
/** @brief Dbus constructs used by LED manager */
sdbusplus::bus::bus bus;
/** @brief sd_bus object manager */
sdbusplus::server::manager::manager objManager;
/** @brief Individual objects */
std::vector<sdbusplus::server::interface::interface> intfContainer;
/** @brief Pointers to groups that are in asserted state */
static std::set<const group*> assertedGroups;
/** @brief Contains the LEDs that are in asserted state */
static group currentState;
/** @brief Waits on the client request and processes them */
void run();
/** @brief Given a group name, tells if its in asserted state or not.
*
* @param[in] name - Group name
* @return - Whether in asserted state or not
*/
bool getGroupState(const std::string& name);
/** @brief Given a group name, applies the action on the group
*
* @param[in] name - Group name
* @param[in] assert - Could be 0 or 1
* @return - Success or exception thrown
*/
int setGroupState(const std::string& name, bool assert);
private:
/** @brief Finds the set of LEDs to operate on and executes action
*
* @return: Returns '0' for now.
*/
int driveLEDs();
};
} // namespace led
} // namespace phosphor
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