blob: d47bfd54e15b5f6ba3861deeb933cd56443caf16 [file] [log] [blame]
George Liudef5f5a2020-04-10 11:23:52 +08001#include "config.h"
2
3#include "ledlayout.hpp"
4
5#include <nlohmann/json.hpp>
6#include <phosphor-logging/log.hpp>
7
8#include <filesystem>
9#include <fstream>
10#include <iostream>
11
12namespace fs = std::filesystem;
13
14using Json = nlohmann::json;
15using LedAction = std::set<phosphor::led::Layout::LedAction>;
16using LedMap = std::map<std::string, LedAction>;
17
18/** @brief Parse LED JSON file and output Json object
19 *
20 * @param[in] path - path of LED JSON file
21 *
22 * @return const Json - Json object
23 */
24const Json readJson(const fs::path& path)
25{
26 using namespace phosphor::logging;
27
28 if (!fs::exists(path) || fs::is_empty(path))
29 {
30 log<level::ERR>("Incorrect File Path or empty file",
31 entry("FILE_PATH=%s", path.c_str()));
32 throw std::runtime_error("Incorrect File Path or empty file");
33 }
34
35 try
36 {
37 std::ifstream jsonFile(path);
38 return Json::parse(jsonFile);
39 }
40 catch (const std::exception& e)
41 {
42 log<level::ERR>("Failed to parse config file",
43 entry("ERROR=%s", e.what()),
44 entry("FILE_PATH=%s", path.c_str()));
45 throw std::runtime_error("Failed to parse config file");
46 }
47}
48
49/** @brief Returns action enum based on string
50 *
51 * @param[in] action - action string
52 *
53 * @return Action - action enum (On/Blink)
54 */
55phosphor::led::Layout::Action getAction(const std::string& action)
56{
57 assert(action == "On" || action == "Blink");
58
59 return action == "Blink" ? phosphor::led::Layout::Blink
60 : phosphor::led::Layout::On;
61}
62
63/** @brief Load JSON config and return led map
64 *
65 * @return LedMap - Generated an std::map of LedAction
66 */
67const LedMap loadJsonConfig(const fs::path& path)
68{
69 LedMap ledMap{};
70
71 // define the default JSON as empty
72 const Json empty{};
73 auto json = readJson(path);
74
75 auto leds = json.value("leds", empty);
76 for (const auto& entry : leds)
77 {
78 fs::path tmpPath(std::string{OBJPATH});
79 tmpPath /= entry.value("group", "");
80 auto objpath = tmpPath.string();
81 auto members = entry.value("members", empty);
82
83 LedAction ledActions{};
84 for (const auto& member : members)
85 {
George Liue5c366f2020-07-02 18:04:05 +080086 auto name = member.value("Name", "");
George Liudef5f5a2020-04-10 11:23:52 +080087 auto action = getAction(member.value("Action", ""));
88 uint8_t dutyOn = member.value("DutyOn", 50);
89 uint16_t period = member.value("Period", 0);
90
91 // Since only have Blink/On and default priority is Blink
92 auto priority = getAction(member.value("Priority", "Blink"));
93 phosphor::led::Layout::LedAction ledAction{name, action, dutyOn,
94 period, priority};
95 ledActions.emplace(ledAction);
96 }
97
98 // Generated an std::map of LedGroupNames to std::set of LEDs
99 // containing the name and properties.
100 ledMap.emplace(objpath, ledActions);
101 }
102
103 return ledMap;
104}