blob: 3d1caec68e8a9ef5e3e01421150c3dd9f4aa12ed [file] [log] [blame]
#include "config.h"
#include "ledlayout.hpp"
#include <nlohmann/json.hpp>
#include <phosphor-logging/log.hpp>
#include <filesystem>
#include <fstream>
#include <iostream>
namespace fs = std::filesystem;
using Json = nlohmann::json;
using LedAction = std::set<phosphor::led::Layout::LedAction>;
using LedMap = std::map<std::string, LedAction>;
/** @brief Parse LED JSON file and output Json object
*
* @param[in] path - path of LED JSON file
*
* @return const Json - Json object
*/
const Json readJson(const fs::path& path)
{
using namespace phosphor::logging;
if (!fs::exists(path) || fs::is_empty(path))
{
log<level::ERR>("Incorrect File Path or empty file",
entry("FILE_PATH=%s", path.c_str()));
throw std::runtime_error("Incorrect File Path or empty file");
}
try
{
std::ifstream jsonFile(path);
return Json::parse(jsonFile);
}
catch (const std::exception& e)
{
log<level::ERR>("Failed to parse config file",
entry("ERROR=%s", e.what()),
entry("FILE_PATH=%s", path.c_str()));
throw std::runtime_error("Failed to parse config file");
}
}
/** @brief Returns action enum based on string
*
* @param[in] action - action string
*
* @return Action - action enum (On/Blink)
*/
phosphor::led::Layout::Action getAction(const std::string& action)
{
assert(action == "On" || action == "Blink");
return action == "Blink" ? phosphor::led::Layout::Blink
: phosphor::led::Layout::On;
}
/** @brief Load JSON config and return led map
*
* @return LedMap - Generated an std::map of LedAction
*/
const LedMap loadJsonConfig(const fs::path& path)
{
LedMap ledMap{};
// define the default JSON as empty
const Json empty{};
auto json = readJson(path);
auto leds = json.value("leds", empty);
for (const auto& entry : leds)
{
fs::path tmpPath(std::string{OBJPATH});
tmpPath /= entry.value("group", "");
auto objpath = tmpPath.string();
auto members = entry.value("members", empty);
LedAction ledActions{};
for (const auto& member : members)
{
auto name = member.value("name", "");
auto action = getAction(member.value("Action", ""));
uint8_t dutyOn = member.value("DutyOn", 50);
uint16_t period = member.value("Period", 0);
// Since only have Blink/On and default priority is Blink
auto priority = getAction(member.value("Priority", "Blink"));
phosphor::led::Layout::LedAction ledAction{name, action, dutyOn,
period, priority};
ledActions.emplace(ledAction);
}
// Generated an std::map of LedGroupNames to std::set of LEDs
// containing the name and properties.
ledMap.emplace(objpath, ledActions);
}
return ledMap;
}