selutility.cpp - openbmc/phosphor-host-ipmid - Gitiles

 #include "config.h"

 #include "selutility.hpp"

 #include <ipmid/api.hpp>
 #include <ipmid/types.hpp>
 #include <ipmid/utils.hpp>
 #include <phosphor-logging/elog-errors.hpp>
 #include <xyz/openbmc_project/Common/error.hpp>

 #include <charconv>
 #include <chrono>
 #include <filesystem>
 #include <vector>

 extern const ipmi::sensor::InvObjectIDMap invSensors;
 using namespace phosphor::logging;
 using InternalFailure =
     sdbusplus::error::xyz::openbmc_project::common::InternalFailure;

 namespace
 {

 constexpr auto systemEventRecord = 0x02;
 constexpr auto generatorID = 0x2000;
 constexpr auto eventMsgRevision = 0x04;
 constexpr auto assertEvent = 0x00;
 constexpr auto deassertEvent = 0x80;
 constexpr auto selDataSize = 3;
 constexpr auto oemCDDataSize = 9;
 constexpr auto oemEFDataSize = 13;

 constexpr auto propAdditionalData = "AdditionalData";
 constexpr auto propResolved = "Resolved";

 constexpr auto strEventDir = "EVENT_DIR";
 constexpr auto strGenerateId = "GENERATOR_ID";
 constexpr auto strRecordType = "RECORD_TYPE";
 constexpr auto strSensorData = "SENSOR_DATA";
 constexpr auto strSensorPath = "SENSOR_PATH";

 } // namespace

 namespace ipmi
 {

 namespace sel
 {

 namespace internal
 {

 inline bool isRecordOEM(uint8_t recordType)
 {
     return recordType != systemEventRecord;
 }

 using additionalDataMap = std::map<std::string, std::string>;
 using entryDataMap = std::map<PropertyName, PropertyType>;
 /** Parse the entry with format like key=val */
 std::pair<std::string, std::string> parseEntry(const std::string& entry)
 {
     constexpr auto equalSign = "=";
     auto pos = entry.find(equalSign);
     assert(pos != std::string::npos);
     auto key = entry.substr(0, pos);
     auto val = entry.substr(pos + 1);
     return {key, val};
 }

 additionalDataMap parseAdditionalData(const AdditionalData& data)
 {
     std::map<std::string, std::string> ret;

     for (const auto& d : data)
     {
         ret.insert(parseEntry(d));
     }
     return ret;
 }

 int convert(const std::string_view& str, int base = 10)
 {
     int ret = 0;
     std::from_chars(str.data(), str.data() + str.size(), ret, base);
     return ret;
 }

 // Convert the string to a vector of uint8_t, where the str is formatted as hex
 std::vector<uint8_t> convertVec(const std::string_view& str)
 {
     std::vector<uint8_t> ret;
     auto len = str.size() / 2;
     ret.reserve(len);
     for (size_t i = 0; i < len; ++i)
     {
         ret.emplace_back(
             static_cast<uint8_t>(convert(str.substr(i * 2, 2), 16)));
     }
     return ret;
 }

 /** Construct OEM SEL record according to IPMI spec 32.2, 32.3. */
 void constructOEMSEL(uint8_t recordType, std::chrono::milliseconds timestamp,
                      const additionalDataMap& m, GetSELEntryResponse& record)
 {
     auto dataIter = m.find(strSensorData);
     assert(dataIter != m.end());
     auto sensorData = convertVec(dataIter->second);
     if (recordType >= 0xC0 && recordType < 0xE0)
     {
         record.event.oemCD.timeStamp = static_cast<uint32_t>(
             std::chrono::duration_cast<std::chrono::seconds>(timestamp)
                 .count());
         record.event.oemCD.recordType = recordType;
         // The ManufactureID and OEM Defined are packed in the sensor data
         // Fill the 9 bytes of Manufacture ID and oemDefined
         memcpy(&record.event.oemCD.manufacturerID, sensorData.data(),
                std::min(sensorData.size(), static_cast<size_t>(oemCDDataSize)));
     }
     else if (recordType >= 0xE0)
     {
         record.event.oemEF.recordType = recordType;
         // The remaining 13 bytes are the OEM Defined data
         memcpy(&record.event.oemEF.oemDefined, sensorData.data(),
                std::min(sensorData.size(), static_cast<size_t>(oemEFDataSize)));
     }
 }

 void constructSEL(uint8_t recordType, std::chrono::milliseconds timestamp,
                   const additionalDataMap& m, const entryDataMap&,
                   GetSELEntryResponse& record)
 {
     if (recordType != systemEventRecord)
     {
         log<level::ERR>("Invalid recordType");
         elog<InternalFailure>();
     }

     // Default values when there is no matched sensor
     record.event.eventRecord.sensorType = 0;
     record.event.eventRecord.sensorNum = 0xFF;
     record.event.eventRecord.eventType = 0;

     auto iter = m.find(strSensorPath);
     assert(iter != m.end());
     const auto& sensorPath = iter->second;
     auto sensorIter = invSensors.find(sensorPath);

     if (sensorIter != invSensors.end())
     {
         // There is a matched sensor
         record.event.eventRecord.sensorType = sensorIter->second.sensorType;
         record.event.eventRecord.sensorNum = sensorIter->second.sensorID;

         iter = m.find(strEventDir);
         assert(iter != m.end());
         auto eventDir = static_cast<uint8_t>(convert(iter->second));
         uint8_t assert = eventDir ? assertEvent : deassertEvent;
         record.event.eventRecord.eventType =
             assert | sensorIter->second.eventReadingType;
     }
     record.event.eventRecord.recordType = recordType;
     record.event.eventRecord.timeStamp = static_cast<uint32_t>(
         std::chrono::duration_cast<std::chrono::seconds>(timestamp).count());
     iter = m.find(strGenerateId);
     assert(iter != m.end());
     record.event.eventRecord.generatorID =
         static_cast<uint16_t>(convert(iter->second));
     record.event.eventRecord.eventMsgRevision = eventMsgRevision;
     iter = m.find(strSensorData);
     assert(iter != m.end());
     auto sensorData = convertVec(iter->second);
     // The remaining 3 bytes are the sensor data
     memcpy(&record.event.eventRecord.eventData1, sensorData.data(),
            std::min(sensorData.size(), static_cast<size_t>(selDataSize)));
 }

 GetSELEntryResponse
     prepareSELEntry(const std::string& objPath,
                     ipmi::sensor::InvObjectIDMap::const_iterator iter)
 {
     GetSELEntryResponse record{};

     sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
     auto service = ipmi::getService(bus, logEntryIntf, objPath);

     // Read all the log entry properties.
     auto methodCall = bus.new_method_call(service.c_str(), objPath.c_str(),
                                           propIntf, "GetAll");
     methodCall.append(logEntryIntf);

     entryDataMap entryData;
     try
     {
         auto reply = bus.call(methodCall);
         reply.read(entryData);
     }
     catch (const std::exception& e)
     {
         log<level::ERR>("Error in reading logging property entries",
                         entry("ERROR=%s", e.what()));
         elog<InternalFailure>();
     }

     // Read Id from the log entry.
     static constexpr auto propId = "Id";
     auto iterId = entryData.find(propId);
     if (iterId == entryData.end())
     {
         log<level::ERR>("Error in reading Id of logging entry");
         elog<InternalFailure>();
     }

     // Read Timestamp from the log entry.
     static constexpr auto propTimeStamp = "Timestamp";
     auto iterTimeStamp = entryData.find(propTimeStamp);
     if (iterTimeStamp == entryData.end())
     {
         log<level::ERR>("Error in reading Timestamp of logging entry");
         elog<InternalFailure>();
     }
     std::chrono::milliseconds chronoTimeStamp(
         std::get<uint64_t>(iterTimeStamp->second));

     bool isFromSELLogger = false;
     additionalDataMap m;

     // The recordID are with the same offset between different types,
     // so we are safe to set the recordID here
     record.event.eventRecord.recordID =
         static_cast<uint16_t>(std::get<uint32_t>(iterId->second));

     iterId = entryData.find(propAdditionalData);
     if (iterId != entryData.end())
     {
         // Check if it's a SEL from phosphor-sel-logger which shall contain
         // the record ID, etc
         const auto& addData = std::get<AdditionalData>(iterId->second);
         m = parseAdditionalData(addData);
         auto recordTypeIter = m.find(strRecordType);
         if (recordTypeIter != m.end())
         {
             // It is a SEL from phosphor-sel-logger
             isFromSELLogger = true;
         }
         else
         {
             // Not a SEL from phosphor-sel-logger, it shall have a valid
             // invSensor
             if (iter == invSensors.end())
             {
                 log<level::ERR>("System event sensor not found");
                 elog<InternalFailure>();
             }
         }
     }

     if (isFromSELLogger)
     {
         // It is expected to be a custom SEL entry
         auto recordType = static_cast<uint8_t>(convert(m[strRecordType]));
         auto isOEM = isRecordOEM(recordType);
         if (isOEM)
         {
             constructOEMSEL(recordType, chronoTimeStamp, m, record);
         }
         else
         {
             constructSEL(recordType, chronoTimeStamp, m, entryData, record);
         }
     }
     else
     {
         record.event.eventRecord.timeStamp = static_cast<uint32_t>(
             std::chrono::duration_cast<std::chrono::seconds>(chronoTimeStamp)
                 .count());

         record.event.eventRecord.recordType = systemEventRecord;
         record.event.eventRecord.generatorID = generatorID;
         record.event.eventRecord.eventMsgRevision = eventMsgRevision;

         record.event.eventRecord.sensorType = iter->second.sensorType;
         record.event.eventRecord.sensorNum = iter->second.sensorID;
         record.event.eventRecord.eventData1 = iter->second.eventOffset;

         // Read Resolved from the log entry.
         auto iterResolved = entryData.find(propResolved);
         if (iterResolved == entryData.end())
         {
             log<level::ERR>("Error in reading Resolved field of logging entry");
             elog<InternalFailure>();
         }

         // Evaluate if the event is assertion or deassertion event
         if (std::get<bool>(iterResolved->second))
         {
             record.event.eventRecord.eventType = deassertEvent |
                                                  iter->second.eventReadingType;
         }
         else
         {
             record.event.eventRecord.eventType = iter->second.eventReadingType;
         }
     }

     return record;
 }

 } // namespace internal

 GetSELEntryResponse convertLogEntrytoSEL(const std::string& objPath)
 {
     sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};

     static constexpr auto assocIntf =
         "xyz.openbmc_project.Association.Definitions";
     static constexpr auto assocProp = "Associations";

     auto service = ipmi::getService(bus, assocIntf, objPath);

     // Read the Associations interface.
     auto methodCall = bus.new_method_call(service.c_str(), objPath.c_str(),
                                           propIntf, "Get");
     methodCall.append(assocIntf);
     methodCall.append(assocProp);

     using AssociationList =
         std::vector<std::tuple<std::string, std::string, std::string>>;

     std::variant<AssociationList> list;
     try
     {
         auto reply = bus.call(methodCall);
         reply.read(list);
     }
     catch (const std::exception& e)
     {
         log<level::ERR>("Error in reading Associations interface",
                         entry("ERROR=%s", e.what()));
         elog<InternalFailure>();
     }

     auto& assocs = std::get<AssociationList>(list);

     /*
      * Check if the log entry has any callout associations, if there is a
      * callout association try to match the inventory path to the corresponding
      * IPMI sensor.
      */
     for (const auto& item : assocs)
     {
         if (std::get<0>(item).compare(CALLOUT_FWD_ASSOCIATION) == 0)
         {
             auto iter = invSensors.find(std::get<2>(item));
             if (iter == invSensors.end())
             {
                 iter = invSensors.find(BOARD_SENSOR);
                 if (iter == invSensors.end())
                 {
                     log<level::ERR>("Motherboard sensor not found");
                     elog<InternalFailure>();
                 }
             }

             return internal::prepareSELEntry(objPath, iter);
         }
     }

     // If there are no callout associations link the log entry to system event
     // sensor
     auto iter = invSensors.find(SYSTEM_SENSOR);
     return internal::prepareSELEntry(objPath, iter);
 }

 std::chrono::seconds getEntryTimeStamp(const std::string& objPath)
 {
     sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};

     auto service = ipmi::getService(bus, logEntryIntf, objPath);

     using namespace std::string_literals;
     static const auto propTimeStamp = "Timestamp"s;

     auto methodCall = bus.new_method_call(service.c_str(), objPath.c_str(),
                                           propIntf, "Get");
     methodCall.append(logEntryIntf);
     methodCall.append(propTimeStamp);

     std::variant<uint64_t> timeStamp;
     try
     {
         auto reply = bus.call(methodCall);
         reply.read(timeStamp);
     }
     catch (const std::exception& e)
     {
         log<level::ERR>("Error in reading Timestamp from Entry interface",
                         entry("ERROR=%s", e.what()));
         elog<InternalFailure>();
     }

     std::chrono::milliseconds chronoTimeStamp(std::get<uint64_t>(timeStamp));

     return std::chrono::duration_cast<std::chrono::seconds>(chronoTimeStamp);
 }

 void readLoggingObjectPaths(ObjectPaths& paths)
 {
     sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
     auto depth = 0;
     paths.clear();

     auto mapperCall = bus.new_method_call(mapperBusName, mapperObjPath,
                                           mapperIntf, "GetSubTreePaths");
     mapperCall.append(logBasePath);
     mapperCall.append(depth);
     mapperCall.append(ObjectPaths({logEntryIntf}));

     try
     {
         auto reply = bus.call(mapperCall);
         reply.read(paths);
     }
     catch (const sdbusplus::exception_t& e)
     {
         if (strcmp(e.name(),
                    "xyz.openbmc_project.Common.Error.ResourceNotFound"))
         {
             throw;
         }
     }

     std::sort(paths.begin(), paths.end(),
               [](const std::string& a, const std::string& b) {
         namespace fs = std::filesystem;
         fs::path pathA(a);
         fs::path pathB(b);
         auto idA = std::stoul(pathA.filename().string());
         auto idB = std::stoul(pathB.filename().string());

         return idA < idB;
     });
 }

 } // namespace sel

 } // namespace ipmi
	#include "config.h"

	#include "selutility.hpp"

	#include <ipmid/api.hpp>
	#include <ipmid/types.hpp>
	#include <ipmid/utils.hpp>
	#include <phosphor-logging/elog-errors.hpp>
	#include <xyz/openbmc_project/Common/error.hpp>

	#include <charconv>
	#include <chrono>
	#include <filesystem>
	#include <vector>

	extern const ipmi::sensor::InvObjectIDMap invSensors;
	using namespace phosphor::logging;
	using InternalFailure =
	sdbusplus::error::xyz::openbmc_project::common::InternalFailure;

	namespace
	{

	constexpr auto systemEventRecord = 0x02;
	constexpr auto generatorID = 0x2000;
	constexpr auto eventMsgRevision = 0x04;
	constexpr auto assertEvent = 0x00;
	constexpr auto deassertEvent = 0x80;
	constexpr auto selDataSize = 3;
	constexpr auto oemCDDataSize = 9;
	constexpr auto oemEFDataSize = 13;

	constexpr auto propAdditionalData = "AdditionalData";
	constexpr auto propResolved = "Resolved";

	constexpr auto strEventDir = "EVENT_DIR";
	constexpr auto strGenerateId = "GENERATOR_ID";
	constexpr auto strRecordType = "RECORD_TYPE";
	constexpr auto strSensorData = "SENSOR_DATA";
	constexpr auto strSensorPath = "SENSOR_PATH";

	} // namespace

	namespace ipmi
	{

	namespace sel
	{

	namespace internal
	{

	inline bool isRecordOEM(uint8_t recordType)
	{
	return recordType != systemEventRecord;
	}

	using additionalDataMap = std::map<std::string, std::string>;
	using entryDataMap = std::map<PropertyName, PropertyType>;
	/** Parse the entry with format like key=val */
	std::pair<std::string, std::string> parseEntry(const std::string& entry)
	{
	constexpr auto equalSign = "=";
	auto pos = entry.find(equalSign);
	assert(pos != std::string::npos);
	auto key = entry.substr(0, pos);
	auto val = entry.substr(pos + 1);
	return {key, val};
	}

	additionalDataMap parseAdditionalData(const AdditionalData& data)
	{
	std::map<std::string, std::string> ret;

	for (const auto& d : data)
	{
	ret.insert(parseEntry(d));
	}
	return ret;
	}

	int convert(const std::string_view& str, int base = 10)
	{
	int ret = 0;
	std::from_chars(str.data(), str.data() + str.size(), ret, base);
	return ret;
	}

	// Convert the string to a vector of uint8_t, where the str is formatted as hex
	std::vector<uint8_t> convertVec(const std::string_view& str)
	{
	std::vector<uint8_t> ret;
	auto len = str.size() / 2;
	ret.reserve(len);
	for (size_t i = 0; i < len; ++i)
	{
	ret.emplace_back(
	static_cast<uint8_t>(convert(str.substr(i * 2, 2), 16)));
	}
	return ret;
	}

	/** Construct OEM SEL record according to IPMI spec 32.2, 32.3. */
	void constructOEMSEL(uint8_t recordType, std::chrono::milliseconds timestamp,
	const additionalDataMap& m, GetSELEntryResponse& record)
	{
	auto dataIter = m.find(strSensorData);
	assert(dataIter != m.end());
	auto sensorData = convertVec(dataIter->second);
	if (recordType >= 0xC0 && recordType < 0xE0)
	{
	record.event.oemCD.timeStamp = static_cast<uint32_t>(
	std::chrono::duration_cast<std::chrono::seconds>(timestamp)
	.count());
	record.event.oemCD.recordType = recordType;
	// The ManufactureID and OEM Defined are packed in the sensor data
	// Fill the 9 bytes of Manufacture ID and oemDefined
	memcpy(&record.event.oemCD.manufacturerID, sensorData.data(),
	std::min(sensorData.size(), static_cast<size_t>(oemCDDataSize)));
	}
	else if (recordType >= 0xE0)
	{
	record.event.oemEF.recordType = recordType;
	// The remaining 13 bytes are the OEM Defined data
	memcpy(&record.event.oemEF.oemDefined, sensorData.data(),
	std::min(sensorData.size(), static_cast<size_t>(oemEFDataSize)));
	}
	}

	void constructSEL(uint8_t recordType, std::chrono::milliseconds timestamp,
	const additionalDataMap& m, const entryDataMap&,
	GetSELEntryResponse& record)
	{
	if (recordType != systemEventRecord)
	{
	log<level::ERR>("Invalid recordType");
	elog<InternalFailure>();
	}

	// Default values when there is no matched sensor
	record.event.eventRecord.sensorType = 0;
	record.event.eventRecord.sensorNum = 0xFF;
	record.event.eventRecord.eventType = 0;

	auto iter = m.find(strSensorPath);
	assert(iter != m.end());
	const auto& sensorPath = iter->second;
	auto sensorIter = invSensors.find(sensorPath);

	if (sensorIter != invSensors.end())
	{
	// There is a matched sensor
	record.event.eventRecord.sensorType = sensorIter->second.sensorType;
	record.event.eventRecord.sensorNum = sensorIter->second.sensorID;

	iter = m.find(strEventDir);
	assert(iter != m.end());
	auto eventDir = static_cast<uint8_t>(convert(iter->second));
	uint8_t assert = eventDir ? assertEvent : deassertEvent;
	record.event.eventRecord.eventType =
	assert \| sensorIter->second.eventReadingType;
	}
	record.event.eventRecord.recordType = recordType;
	record.event.eventRecord.timeStamp = static_cast<uint32_t>(
	std::chrono::duration_cast<std::chrono::seconds>(timestamp).count());
	iter = m.find(strGenerateId);
	assert(iter != m.end());
	record.event.eventRecord.generatorID =
	static_cast<uint16_t>(convert(iter->second));
	record.event.eventRecord.eventMsgRevision = eventMsgRevision;
	iter = m.find(strSensorData);
	assert(iter != m.end());
	auto sensorData = convertVec(iter->second);
	// The remaining 3 bytes are the sensor data
	memcpy(&record.event.eventRecord.eventData1, sensorData.data(),
	std::min(sensorData.size(), static_cast<size_t>(selDataSize)));
	}

	GetSELEntryResponse
	prepareSELEntry(const std::string& objPath,
	ipmi::sensor::InvObjectIDMap::const_iterator iter)
	{
	GetSELEntryResponse record{};

	sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
	auto service = ipmi::getService(bus, logEntryIntf, objPath);

	// Read all the log entry properties.
	auto methodCall = bus.new_method_call(service.c_str(), objPath.c_str(),
	propIntf, "GetAll");
	methodCall.append(logEntryIntf);

	entryDataMap entryData;
	try
	{
	auto reply = bus.call(methodCall);
	reply.read(entryData);
	}
	catch (const std::exception& e)
	{
	log<level::ERR>("Error in reading logging property entries",
	entry("ERROR=%s", e.what()));
	elog<InternalFailure>();
	}

	// Read Id from the log entry.
	static constexpr auto propId = "Id";
	auto iterId = entryData.find(propId);
	if (iterId == entryData.end())
	{
	log<level::ERR>("Error in reading Id of logging entry");
	elog<InternalFailure>();
	}

	// Read Timestamp from the log entry.
	static constexpr auto propTimeStamp = "Timestamp";
	auto iterTimeStamp = entryData.find(propTimeStamp);
	if (iterTimeStamp == entryData.end())
	{
	log<level::ERR>("Error in reading Timestamp of logging entry");
	elog<InternalFailure>();
	}
	std::chrono::milliseconds chronoTimeStamp(
	std::get<uint64_t>(iterTimeStamp->second));

	bool isFromSELLogger = false;
	additionalDataMap m;

	// The recordID are with the same offset between different types,
	// so we are safe to set the recordID here
	record.event.eventRecord.recordID =
	static_cast<uint16_t>(std::get<uint32_t>(iterId->second));

	iterId = entryData.find(propAdditionalData);
	if (iterId != entryData.end())
	{
	// Check if it's a SEL from phosphor-sel-logger which shall contain
	// the record ID, etc
	const auto& addData = std::get<AdditionalData>(iterId->second);
	m = parseAdditionalData(addData);
	auto recordTypeIter = m.find(strRecordType);
	if (recordTypeIter != m.end())
	{
	// It is a SEL from phosphor-sel-logger
	isFromSELLogger = true;
	}
	else
	{
	// Not a SEL from phosphor-sel-logger, it shall have a valid
	// invSensor
	if (iter == invSensors.end())
	{
	log<level::ERR>("System event sensor not found");
	elog<InternalFailure>();
	}
	}
	}

	if (isFromSELLogger)
	{
	// It is expected to be a custom SEL entry
	auto recordType = static_cast<uint8_t>(convert(m[strRecordType]));
	auto isOEM = isRecordOEM(recordType);
	if (isOEM)
	{
	constructOEMSEL(recordType, chronoTimeStamp, m, record);
	}
	else
	{
	constructSEL(recordType, chronoTimeStamp, m, entryData, record);
	}
	}
	else
	{
	record.event.eventRecord.timeStamp = static_cast<uint32_t>(
	std::chrono::duration_cast<std::chrono::seconds>(chronoTimeStamp)
	.count());

	record.event.eventRecord.recordType = systemEventRecord;
	record.event.eventRecord.generatorID = generatorID;
	record.event.eventRecord.eventMsgRevision = eventMsgRevision;

	record.event.eventRecord.sensorType = iter->second.sensorType;
	record.event.eventRecord.sensorNum = iter->second.sensorID;
	record.event.eventRecord.eventData1 = iter->second.eventOffset;

	// Read Resolved from the log entry.
	auto iterResolved = entryData.find(propResolved);
	if (iterResolved == entryData.end())
	{
	log<level::ERR>("Error in reading Resolved field of logging entry");
	elog<InternalFailure>();
	}

	// Evaluate if the event is assertion or deassertion event
	if (std::get<bool>(iterResolved->second))
	{
	record.event.eventRecord.eventType = deassertEvent \|
	iter->second.eventReadingType;
	}
	else
	{
	record.event.eventRecord.eventType = iter->second.eventReadingType;
	}
	}

	return record;
	}

	} // namespace internal

	GetSELEntryResponse convertLogEntrytoSEL(const std::string& objPath)
	{
	sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};

	static constexpr auto assocIntf =
	"xyz.openbmc_project.Association.Definitions";
	static constexpr auto assocProp = "Associations";

	auto service = ipmi::getService(bus, assocIntf, objPath);

	// Read the Associations interface.
	auto methodCall = bus.new_method_call(service.c_str(), objPath.c_str(),
	propIntf, "Get");
	methodCall.append(assocIntf);
	methodCall.append(assocProp);

	using AssociationList =
	std::vector<std::tuple<std::string, std::string, std::string>>;

	std::variant<AssociationList> list;
	try
	{
	auto reply = bus.call(methodCall);
	reply.read(list);
	}
	catch (const std::exception& e)
	{
	log<level::ERR>("Error in reading Associations interface",
	entry("ERROR=%s", e.what()));
	elog<InternalFailure>();
	}

	auto& assocs = std::get<AssociationList>(list);

	/*
	* Check if the log entry has any callout associations, if there is a
	* callout association try to match the inventory path to the corresponding
	* IPMI sensor.
	*/
	for (const auto& item : assocs)
	{
	if (std::get<0>(item).compare(CALLOUT_FWD_ASSOCIATION) == 0)
	{
	auto iter = invSensors.find(std::get<2>(item));
	if (iter == invSensors.end())
	{
	iter = invSensors.find(BOARD_SENSOR);
	if (iter == invSensors.end())
	{
	log<level::ERR>("Motherboard sensor not found");
	elog<InternalFailure>();
	}
	}

	return internal::prepareSELEntry(objPath, iter);
	}
	}

	// If there are no callout associations link the log entry to system event
	// sensor
	auto iter = invSensors.find(SYSTEM_SENSOR);
	return internal::prepareSELEntry(objPath, iter);
	}

	std::chrono::seconds getEntryTimeStamp(const std::string& objPath)
	{
	sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};

	auto service = ipmi::getService(bus, logEntryIntf, objPath);

	using namespace std::string_literals;
	static const auto propTimeStamp = "Timestamp"s;

	auto methodCall = bus.new_method_call(service.c_str(), objPath.c_str(),
	propIntf, "Get");
	methodCall.append(logEntryIntf);
	methodCall.append(propTimeStamp);

	std::variant<uint64_t> timeStamp;
	try
	{
	auto reply = bus.call(methodCall);
	reply.read(timeStamp);
	}
	catch (const std::exception& e)
	{
	log<level::ERR>("Error in reading Timestamp from Entry interface",
	entry("ERROR=%s", e.what()));
	elog<InternalFailure>();
	}

	std::chrono::milliseconds chronoTimeStamp(std::get<uint64_t>(timeStamp));

	return std::chrono::duration_cast<std::chrono::seconds>(chronoTimeStamp);
	}

	void readLoggingObjectPaths(ObjectPaths& paths)
	{
	sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
	auto depth = 0;
	paths.clear();

	auto mapperCall = bus.new_method_call(mapperBusName, mapperObjPath,
	mapperIntf, "GetSubTreePaths");
	mapperCall.append(logBasePath);
	mapperCall.append(depth);
	mapperCall.append(ObjectPaths({logEntryIntf}));

	try
	{
	auto reply = bus.call(mapperCall);
	reply.read(paths);
	}
	catch (const sdbusplus::exception_t& e)
	{
	if (strcmp(e.name(),
	"xyz.openbmc_project.Common.Error.ResourceNotFound"))
	{
	throw;
	}
	}

	std::sort(paths.begin(), paths.end(),
	[](const std::string& a, const std::string& b) {
	namespace fs = std::filesystem;
	fs::path pathA(a);
	fs::path pathB(b);
	auto idA = std::stoul(pathA.filename().string());
	auto idB = std::stoul(pathB.filename().string());

	return idA < idB;
	});
	}

	} // namespace sel

	} // namespace ipmi