src/HwmonTempMain.cpp - openbmc/dbus-sensors - Gitiles

 /*
 // Copyright (c) 2017 Intel Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //      http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 */

 #include "HwmonTempSensor.hpp"
 #include "Utils.hpp"

 #include <array>
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/algorithm/string/replace.hpp>
 #include <boost/container/flat_map.hpp>
 #include <boost/container/flat_set.hpp>
 #include <filesystem>
 #include <fstream>
 #include <functional>
 #include <memory>
 #include <regex>
 #include <sdbusplus/asio/connection.hpp>
 #include <sdbusplus/asio/object_server.hpp>
 #include <sdbusplus/bus/match.hpp>
 #include <stdexcept>
 #include <string>
 #include <utility>
 #include <variant>
 #include <vector>

 static constexpr bool DEBUG = false;

 namespace fs = std::filesystem;
 static constexpr std::array<const char*, 8> sensorTypes = {
     "xyz.openbmc_project.Configuration.EMC1413",
     "xyz.openbmc_project.Configuration.MAX31725",
     "xyz.openbmc_project.Configuration.MAX31730",
     "xyz.openbmc_project.Configuration.TMP112",
     "xyz.openbmc_project.Configuration.TMP175",
     "xyz.openbmc_project.Configuration.TMP421",
     "xyz.openbmc_project.Configuration.TMP441",
     "xyz.openbmc_project.Configuration.TMP75"};

 void createSensors(
     boost::asio::io_service& io, sdbusplus::asio::object_server& objectServer,
     boost::container::flat_map<std::string, std::unique_ptr<HwmonTempSensor>>&
         sensors,
     std::shared_ptr<sdbusplus::asio::connection>& dbusConnection,
     const std::unique_ptr<boost::container::flat_set<std::string>>&
         sensorsChanged)
 {
     auto getter = std::make_shared<GetSensorConfiguration>(
         dbusConnection,
         std::move([&io, &objectServer, &sensors, &dbusConnection,
                    &sensorsChanged](
                       const ManagedObjectType& sensorConfigurations) {
             bool firstScan = sensorsChanged == nullptr;

             std::vector<fs::path> paths;
             if (!findFiles(fs::path("/sys/class/hwmon"), R"(temp\d+_input)",
                            paths))
             {
                 std::cerr << "No temperature sensors in system\n";
                 return;
             }

             boost::container::flat_set<std::string> directories;

             // iterate through all found temp sensors, and try to match them
             // with configuration
             for (auto& path : paths)
             {
                 std::smatch match;
                 const std::string& pathStr = path.string();
                 auto directory = path.parent_path();

                 auto ret = directories.insert(directory.string());
                 if (!ret.second)
                 {
                     continue; // already searched this path
                 }

                 fs::path device = directory / "device";
                 std::string deviceName = fs::canonical(device).stem();
                 auto findHyphen = deviceName.find("-");
                 if (findHyphen == std::string::npos)
                 {
                     std::cerr << "found bad device " << deviceName << "\n";
                     continue;
                 }
                 std::string busStr = deviceName.substr(0, findHyphen);
                 std::string addrStr = deviceName.substr(findHyphen + 1);

                 size_t bus = 0;
                 size_t addr = 0;
                 try
                 {
                     bus = std::stoi(busStr);
                     addr = std::stoi(addrStr, 0, 16);
                 }
                 catch (std::invalid_argument&)
                 {
                     continue;
                 }
                 const SensorData* sensorData = nullptr;
                 const std::string* interfacePath = nullptr;
                 const char* sensorType = nullptr;
                 const SensorBaseConfiguration* baseConfiguration = nullptr;
                 const SensorBaseConfigMap* baseConfigMap = nullptr;

                 for (const std::pair<sdbusplus::message::object_path,
                                      SensorData>& sensor : sensorConfigurations)
                 {
                     sensorData = &(sensor.second);
                     for (const char* type : sensorTypes)
                     {
                         auto sensorBase = sensorData->find(type);
                         if (sensorBase != sensorData->end())
                         {
                             baseConfiguration = &(*sensorBase);
                             sensorType = type;
                             break;
                         }
                     }
                     if (baseConfiguration == nullptr)
                     {
                         std::cerr << "error finding base configuration for "
                                   << deviceName << "\n";
                         continue;
                     }
                     baseConfigMap = &baseConfiguration->second;
                     auto configurationBus = baseConfigMap->find("Bus");
                     auto configurationAddress = baseConfigMap->find("Address");

                     if (configurationBus == baseConfigMap->end() ||
                         configurationAddress == baseConfigMap->end())
                     {
                         std::cerr << "error finding bus or address in "
                                      "configuration\n";
                         continue;
                     }

                     if (std::get<uint64_t>(configurationBus->second) != bus ||
                         std::get<uint64_t>(configurationAddress->second) !=
                             addr)
                     {
                         continue;
                     }

                     interfacePath = &(sensor.first.str);
                     break;
                 }
                 if (interfacePath == nullptr)
                 {
                     std::cerr << "failed to find match for " << deviceName
                               << "\n";
                     continue;
                 }

                 auto findSensorName = baseConfigMap->find("Name");
                 if (findSensorName == baseConfigMap->end())
                 {
                     std::cerr << "could not determine configuration name for "
                               << deviceName << "\n";
                     continue;
                 }
                 std::string sensorName =
                     std::get<std::string>(findSensorName->second);
                 // on rescans, only update sensors we were signaled by
                 auto findSensor = sensors.find(sensorName);
                 if (!firstScan && findSensor != sensors.end())
                 {
                     bool found = false;
                     for (auto it = sensorsChanged->begin();
                          it != sensorsChanged->end(); it++)
                     {
                         if (boost::ends_with(*it, findSensor->second->name))
                         {
                             sensorsChanged->erase(it);
                             findSensor->second = nullptr;
                             found = true;
                             break;
                         }
                     }
                     if (!found)
                     {
                         continue;
                     }
                 }
                 std::vector<thresholds::Threshold> sensorThresholds;
                 if (!parseThresholdsFromConfig(*sensorData, sensorThresholds))
                 {
                     std::cerr << "error populating thresholds for "
                               << sensorName << "\n";
                 }
                 auto findPowerOn = baseConfiguration->second.find("PowerState");
                 PowerState readState = PowerState::always;
                 if (findPowerOn != baseConfiguration->second.end())
                 {
                     std::string powerState = std::visit(
                         VariantToStringVisitor(), findPowerOn->second);
                     setReadState(powerState, readState);
                 }
                 auto& sensor = sensors[sensorName];
                 sensor = nullptr;
                 sensor = std::make_unique<HwmonTempSensor>(
                     directory.string() + "/temp1_input", sensorType,
                     objectServer, dbusConnection, io, sensorName,
                     std::move(sensorThresholds), *interfacePath, readState);

                 // Looking for keys like "Name1" for temp2_input,
                 // "Name2" for temp3_input, etc.
                 int i = 0;
                 while (true)
                 {
                     ++i;
                     auto findKey =
                         baseConfigMap->find("Name" + std::string(1, '0' + i));
                     if (findKey == baseConfigMap->end())
                     {
                         break;
                     }

                     std::string sensorName =
                         std::get<std::string>(findKey->second);
                     auto& sensor = sensors[sensorName];
                     sensor = nullptr;
                     sensor = std::make_unique<HwmonTempSensor>(
                         directory.string() + "/temp" + std::string(1, '1' + i) +
                             "_input",
                         sensorType, objectServer, dbusConnection, io,
                         sensorName, std::vector<thresholds::Threshold>(),
                         *interfacePath, readState);
                 }
             }
         }));
     getter->getConfiguration(
         std::vector<std::string>(sensorTypes.begin(), sensorTypes.end()));
 }

 int main()
 {
     boost::asio::io_service io;
     auto systemBus = std::make_shared<sdbusplus::asio::connection>(io);
     systemBus->request_name("xyz.openbmc_project.HwmonTempSensor");
     sdbusplus::asio::object_server objectServer(systemBus);
     boost::container::flat_map<std::string, std::unique_ptr<HwmonTempSensor>>
         sensors;
     std::vector<std::unique_ptr<sdbusplus::bus::match::match>> matches;
     std::unique_ptr<boost::container::flat_set<std::string>> sensorsChanged =
         std::make_unique<boost::container::flat_set<std::string>>();

     io.post([&]() {
         createSensors(io, objectServer, sensors, systemBus, nullptr);
     });

     boost::asio::deadline_timer filterTimer(io);
     std::function<void(sdbusplus::message::message&)> eventHandler =
         [&](sdbusplus::message::message& message) {
             if (message.is_method_error())
             {
                 std::cerr << "callback method error\n";
                 return;
             }
             sensorsChanged->insert(message.get_path());
             // this implicitly cancels the timer
             filterTimer.expires_from_now(boost::posix_time::seconds(1));

             filterTimer.async_wait([&](const boost::system::error_code& ec) {
                 if (ec == boost::asio::error::operation_aborted)
                 {
                     /* we were canceled*/
                     return;
                 }
                 else if (ec)
                 {
                     std::cerr << "timer error\n";
                     return;
                 }
                 createSensors(io, objectServer, sensors, systemBus,
                               sensorsChanged);
             });
         };

     for (const char* type : sensorTypes)
     {
         auto match = std::make_unique<sdbusplus::bus::match::match>(
             static_cast<sdbusplus::bus::bus&>(*systemBus),
             "type='signal',member='PropertiesChanged',path_namespace='" +
                 std::string(inventoryPath) + "',arg0namespace='" + type + "'",
             eventHandler);
         matches.emplace_back(std::move(match));
     }

     io.run();
 }
	/*
	// Copyright (c) 2017 Intel Corporation
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.
	*/

	#include "HwmonTempSensor.hpp"
	#include "Utils.hpp"

	#include <array>
	#include <boost/algorithm/string/predicate.hpp>
	#include <boost/algorithm/string/replace.hpp>
	#include <boost/container/flat_map.hpp>
	#include <boost/container/flat_set.hpp>
	#include <filesystem>
	#include <fstream>
	#include <functional>
	#include <memory>
	#include <regex>
	#include <sdbusplus/asio/connection.hpp>
	#include <sdbusplus/asio/object_server.hpp>
	#include <sdbusplus/bus/match.hpp>
	#include <stdexcept>
	#include <string>
	#include <utility>
	#include <variant>
	#include <vector>

	static constexpr bool DEBUG = false;

	namespace fs = std::filesystem;
	static constexpr std::array<const char*, 8> sensorTypes = {
	"xyz.openbmc_project.Configuration.EMC1413",
	"xyz.openbmc_project.Configuration.MAX31725",
	"xyz.openbmc_project.Configuration.MAX31730",
	"xyz.openbmc_project.Configuration.TMP112",
	"xyz.openbmc_project.Configuration.TMP175",
	"xyz.openbmc_project.Configuration.TMP421",
	"xyz.openbmc_project.Configuration.TMP441",
	"xyz.openbmc_project.Configuration.TMP75"};

	void createSensors(
	boost::asio::io_service& io, sdbusplus::asio::object_server& objectServer,
	boost::container::flat_map<std::string, std::unique_ptr<HwmonTempSensor>>&
	sensors,
	std::shared_ptr<sdbusplus::asio::connection>& dbusConnection,
	const std::unique_ptr<boost::container::flat_set<std::string>>&
	sensorsChanged)
	{
	auto getter = std::make_shared<GetSensorConfiguration>(
	dbusConnection,
	std::move([&io, &objectServer, &sensors, &dbusConnection,
	&sensorsChanged](
	const ManagedObjectType& sensorConfigurations) {
	bool firstScan = sensorsChanged == nullptr;

	std::vector<fs::path> paths;
	if (!findFiles(fs::path("/sys/class/hwmon"), R"(temp\d+_input)",
	paths))
	{
	std::cerr << "No temperature sensors in system\n";
	return;
	}

	boost::container::flat_set<std::string> directories;

	// iterate through all found temp sensors, and try to match them
	// with configuration
	for (auto& path : paths)
	{
	std::smatch match;
	const std::string& pathStr = path.string();
	auto directory = path.parent_path();

	auto ret = directories.insert(directory.string());
	if (!ret.second)
	{
	continue; // already searched this path
	}

	fs::path device = directory / "device";
	std::string deviceName = fs::canonical(device).stem();
	auto findHyphen = deviceName.find("-");
	if (findHyphen == std::string::npos)
	{
	std::cerr << "found bad device " << deviceName << "\n";
	continue;
	}
	std::string busStr = deviceName.substr(0, findHyphen);
	std::string addrStr = deviceName.substr(findHyphen + 1);

	size_t bus = 0;
	size_t addr = 0;
	try
	{
	bus = std::stoi(busStr);
	addr = std::stoi(addrStr, 0, 16);
	}
	catch (std::invalid_argument&)
	{
	continue;
	}
	const SensorData* sensorData = nullptr;
	const std::string* interfacePath = nullptr;
	const char* sensorType = nullptr;
	const SensorBaseConfiguration* baseConfiguration = nullptr;
	const SensorBaseConfigMap* baseConfigMap = nullptr;

	for (const std::pair<sdbusplus::message::object_path,
	SensorData>& sensor : sensorConfigurations)
	{
	sensorData = &(sensor.second);
	for (const char* type : sensorTypes)
	{
	auto sensorBase = sensorData->find(type);
	if (sensorBase != sensorData->end())
	{
	baseConfiguration = &(*sensorBase);
	sensorType = type;
	break;
	}
	}
	if (baseConfiguration == nullptr)
	{
	std::cerr << "error finding base configuration for "
	<< deviceName << "\n";
	continue;
	}
	baseConfigMap = &baseConfiguration->second;
	auto configurationBus = baseConfigMap->find("Bus");
	auto configurationAddress = baseConfigMap->find("Address");

	if (configurationBus == baseConfigMap->end() \|\|
	configurationAddress == baseConfigMap->end())
	{
	std::cerr << "error finding bus or address in "
	"configuration\n";
	continue;
	}

	if (std::get<uint64_t>(configurationBus->second) != bus \|\|
	std::get<uint64_t>(configurationAddress->second) !=
	addr)
	{
	continue;
	}

	interfacePath = &(sensor.first.str);
	break;
	}
	if (interfacePath == nullptr)
	{
	std::cerr << "failed to find match for " << deviceName
	<< "\n";
	continue;
	}

	auto findSensorName = baseConfigMap->find("Name");
	if (findSensorName == baseConfigMap->end())
	{
	std::cerr << "could not determine configuration name for "
	<< deviceName << "\n";
	continue;
	}
	std::string sensorName =
	std::get<std::string>(findSensorName->second);
	// on rescans, only update sensors we were signaled by
	auto findSensor = sensors.find(sensorName);
	if (!firstScan && findSensor != sensors.end())
	{
	bool found = false;
	for (auto it = sensorsChanged->begin();
	it != sensorsChanged->end(); it++)
	{
	if (boost::ends_with(*it, findSensor->second->name))
	{
	sensorsChanged->erase(it);
	findSensor->second = nullptr;
	found = true;
	break;
	}
	}
	if (!found)
	{
	continue;
	}
	}
	std::vector<thresholds::Threshold> sensorThresholds;
	if (!parseThresholdsFromConfig(*sensorData, sensorThresholds))
	{
	std::cerr << "error populating thresholds for "
	<< sensorName << "\n";
	}
	auto findPowerOn = baseConfiguration->second.find("PowerState");
	PowerState readState = PowerState::always;
	if (findPowerOn != baseConfiguration->second.end())
	{
	std::string powerState = std::visit(
	VariantToStringVisitor(), findPowerOn->second);
	setReadState(powerState, readState);
	}
	auto& sensor = sensors[sensorName];
	sensor = nullptr;
	sensor = std::make_unique<HwmonTempSensor>(
	directory.string() + "/temp1_input", sensorType,
	objectServer, dbusConnection, io, sensorName,
	std::move(sensorThresholds), *interfacePath, readState);

	// Looking for keys like "Name1" for temp2_input,
	// "Name2" for temp3_input, etc.
	int i = 0;
	while (true)
	{
	++i;
	auto findKey =
	baseConfigMap->find("Name" + std::string(1, '0' + i));
	if (findKey == baseConfigMap->end())
	{
	break;
	}

	std::string sensorName =
	std::get<std::string>(findKey->second);
	auto& sensor = sensors[sensorName];
	sensor = nullptr;
	sensor = std::make_unique<HwmonTempSensor>(
	directory.string() + "/temp" + std::string(1, '1' + i) +
	"_input",
	sensorType, objectServer, dbusConnection, io,
	sensorName, std::vector<thresholds::Threshold>(),
	*interfacePath, readState);
	}
	}
	}));
	getter->getConfiguration(
	std::vector<std::string>(sensorTypes.begin(), sensorTypes.end()));
	}

	int main()
	{
	boost::asio::io_service io;
	auto systemBus = std::make_shared<sdbusplus::asio::connection>(io);
	systemBus->request_name("xyz.openbmc_project.HwmonTempSensor");
	sdbusplus::asio::object_server objectServer(systemBus);
	boost::container::flat_map<std::string, std::unique_ptr<HwmonTempSensor>>
	sensors;
	std::vector<std::unique_ptr<sdbusplus::bus::match::match>> matches;
	std::unique_ptr<boost::container::flat_set<std::string>> sensorsChanged =
	std::make_unique<boost::container::flat_set<std::string>>();

	io.post([&]() {
	createSensors(io, objectServer, sensors, systemBus, nullptr);
	});

	boost::asio::deadline_timer filterTimer(io);
	std::function<void(sdbusplus::message::message&)> eventHandler =
	[&](sdbusplus::message::message& message) {
	if (message.is_method_error())
	{
	std::cerr << "callback method error\n";
	return;
	}
	sensorsChanged->insert(message.get_path());
	// this implicitly cancels the timer
	filterTimer.expires_from_now(boost::posix_time::seconds(1));

	filterTimer.async_wait([&](const boost::system::error_code& ec) {
	if (ec == boost::asio::error::operation_aborted)
	{
	/* we were canceled*/
	return;
	}
	else if (ec)
	{
	std::cerr << "timer error\n";
	return;
	}
	createSensors(io, objectServer, sensors, systemBus,
	sensorsChanged);
	});
	};

	for (const char* type : sensorTypes)
	{
	auto match = std::make_unique<sdbusplus::bus::match::match>(
	static_cast<sdbusplus::bus::bus&>(*systemBus),
	"type='signal',member='PropertiesChanged',path_namespace='" +
	std::string(inventoryPath) + "',arg0namespace='" + type + "'",
	eventHandler);
	matches.emplace_back(std::move(match));
	}

	io.run();
	}