Vijay Khemka | abcc94f | 2020-08-11 15:27:44 -0700 | [diff] [blame^] | 1 | #include "virtualSensor.hpp" |
| 2 | |
| 3 | #include "config.hpp" |
| 4 | |
| 5 | #include <phosphor-logging/log.hpp> |
| 6 | #include <sdeventplus/event.hpp> |
| 7 | |
| 8 | #include <fstream> |
| 9 | #include <iostream> |
| 10 | |
| 11 | static constexpr bool DEBUG = false; |
| 12 | static constexpr auto busName = "xyz.openbmc_project.VirtualSensor"; |
| 13 | static constexpr auto sensorDbusPath = "/xyz/openbmc_project/sensors/"; |
| 14 | static constexpr uint8_t defaultHighThreshold = 100; |
| 15 | static constexpr uint8_t defaultLowThreshold = 0; |
| 16 | |
| 17 | using namespace phosphor::logging; |
| 18 | |
| 19 | namespace phosphor |
| 20 | { |
| 21 | namespace virtualSensor |
| 22 | { |
| 23 | |
| 24 | void printParams(const VirtualSensor::ParamMap& paramMap) |
| 25 | { |
| 26 | for (const auto& p : paramMap) |
| 27 | { |
| 28 | const auto& p1 = p.first; |
| 29 | const auto& p2 = p.second; |
| 30 | auto val = p2->getParamValue(); |
| 31 | std::cout << p1 << " = " << val << "\n"; |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | double SensorParam::getParamValue() |
| 36 | { |
| 37 | switch (paramType) |
| 38 | { |
| 39 | case constParam: |
| 40 | return value; |
| 41 | break; |
| 42 | default: |
| 43 | throw std::invalid_argument("param type not supported"); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | void VirtualSensor::initVirtualSensor(const Json& sensorConfig) |
| 48 | { |
| 49 | |
| 50 | static const Json empty{}; |
| 51 | |
| 52 | /* Get threshold values if defined in config */ |
| 53 | auto threshold = sensorConfig.value("Threshold", empty); |
| 54 | if (!threshold.empty()) |
| 55 | { |
| 56 | sensorThreshold.criticalHigh = |
| 57 | threshold.value("CriticalHigh", defaultHighThreshold); |
| 58 | sensorThreshold.criticalLow = |
| 59 | threshold.value("CriticalLow", defaultLowThreshold); |
| 60 | sensorThreshold.warningHigh = |
| 61 | threshold.value("WarningHigh", defaultHighThreshold); |
| 62 | sensorThreshold.warningLow = |
| 63 | threshold.value("WarningLow", defaultLowThreshold); |
| 64 | } |
| 65 | |
| 66 | /* Set threshold value to dbus */ |
| 67 | setSensorThreshold(); |
| 68 | |
| 69 | /* Get expression string */ |
| 70 | exprStr = sensorConfig.value("Expression", ""); |
| 71 | |
| 72 | /* Get all the parameter listed in configuration */ |
| 73 | auto params = sensorConfig.value("Params", empty); |
| 74 | |
| 75 | /* Check for constant parameter */ |
| 76 | const auto& consParams = params.value("ConstParam", empty); |
| 77 | if (!consParams.empty()) |
| 78 | { |
| 79 | for (auto& j : consParams) |
| 80 | { |
| 81 | if (j.find("ParamName") != j.end()) |
| 82 | { |
| 83 | auto paramPtr = std::make_unique<SensorParam>(j["Value"]); |
| 84 | paramMap.emplace(j["ParamName"], std::move(paramPtr)); |
| 85 | } |
| 86 | else |
| 87 | { |
| 88 | /* Invalid configuration */ |
| 89 | throw std::invalid_argument( |
| 90 | "ParamName not found in configuration"); |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | /* TODO: Check for dbus parameter */ |
| 96 | |
| 97 | /* Print all parameters for debug purpose only */ |
| 98 | if (DEBUG) |
| 99 | printParams(paramMap); |
| 100 | } |
| 101 | |
| 102 | void VirtualSensor::setSensorValue(double value) |
| 103 | { |
| 104 | ValueIface::value(value); |
| 105 | } |
| 106 | |
| 107 | void VirtualSensor::setSensorThreshold() |
| 108 | { |
| 109 | CriticalInterface::criticalHigh(sensorThreshold.criticalHigh); |
| 110 | CriticalInterface::criticalLow(sensorThreshold.criticalLow); |
| 111 | WarningInterface::warningHigh(sensorThreshold.warningHigh); |
| 112 | WarningInterface::warningLow(sensorThreshold.warningLow); |
| 113 | } |
| 114 | |
| 115 | /* TBD */ |
| 116 | void VirtualSensor::updateVirtualSensor() |
| 117 | {} |
| 118 | |
| 119 | /** @brief Parsing Virtual Sensor config JSON file */ |
| 120 | Json VirtualSensors::parseConfigFile(const std::string configFile) |
| 121 | { |
| 122 | std::ifstream jsonFile(configFile); |
| 123 | if (!jsonFile.is_open()) |
| 124 | { |
| 125 | log<level::ERR>("config JSON file not found", |
| 126 | entry("FILENAME = %s", configFile.c_str())); |
| 127 | throw std::exception{}; |
| 128 | } |
| 129 | |
| 130 | auto data = Json::parse(jsonFile, nullptr, false); |
| 131 | if (data.is_discarded()) |
| 132 | { |
| 133 | log<level::ERR>("config readings JSON parser failure", |
| 134 | entry("FILENAME = %s", configFile.c_str())); |
| 135 | throw std::exception{}; |
| 136 | } |
| 137 | |
| 138 | return data; |
| 139 | } |
| 140 | |
| 141 | void VirtualSensors::createVirtualSensors() |
| 142 | { |
| 143 | static const Json empty{}; |
| 144 | |
| 145 | auto data = parseConfigFile(VIRTUAL_SENSOR_CONFIG_FILE); |
| 146 | // print values |
| 147 | if (DEBUG) |
| 148 | std::cout << "Config json data:\n" << data << "\n\n"; |
| 149 | |
| 150 | /* Get virtual sensors config data */ |
| 151 | for (const auto& j : data) |
| 152 | { |
| 153 | auto desc = j.value("Desc", empty); |
| 154 | if (!desc.empty()) |
| 155 | { |
| 156 | std::string sensorType = desc.value("SensorType", ""); |
| 157 | std::string name = desc.value("Name", ""); |
| 158 | |
| 159 | if (!name.empty() && !sensorType.empty()) |
| 160 | { |
| 161 | std::string objPath(sensorDbusPath); |
| 162 | objPath += sensorType + "/" + name; |
| 163 | |
| 164 | auto virtualSensorPtr = |
| 165 | std::make_unique<VirtualSensor>(bus, objPath.c_str(), j); |
| 166 | virtualSensorsMap.emplace(name, std::move(virtualSensorPtr)); |
| 167 | |
| 168 | log<level::INFO>("Added a new virtual sensor", |
| 169 | entry("NAME = %s", name.c_str())); |
| 170 | } |
| 171 | else |
| 172 | { |
| 173 | log<level::ERR>("Sensor type or name not found in config file"); |
| 174 | } |
| 175 | } |
| 176 | else |
| 177 | { |
| 178 | log<level::ERR>( |
| 179 | "Descriptor for new virtual sensor not found in config file"); |
| 180 | } |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | } // namespace virtualSensor |
| 185 | } // namespace phosphor |
| 186 | |
| 187 | /** |
| 188 | * @brief Main |
| 189 | */ |
| 190 | int main() |
| 191 | { |
| 192 | |
| 193 | // Get a default event loop |
| 194 | auto event = sdeventplus::Event::get_default(); |
| 195 | |
| 196 | // Get a handle to system dbus |
| 197 | auto bus = sdbusplus::bus::new_default(); |
| 198 | |
| 199 | // Create an virtual sensors object |
| 200 | phosphor::virtualSensor::VirtualSensors virtualSensors(bus); |
| 201 | |
| 202 | // Request service bus name |
| 203 | bus.request_name(busName); |
| 204 | |
| 205 | // Attach the bus to sd_event to service user requests |
| 206 | bus.attach_event(event.get(), SD_EVENT_PRIORITY_NORMAL); |
| 207 | event.loop(); |
| 208 | |
| 209 | return 0; |
| 210 | } |