vpd-manager/oem-handler/ibm_handler.cpp - openbmc/openpower-vpd-parser - Gitiles

 #include "config.h"

 #include "ibm_handler.hpp"

 #include "parser.hpp"

 #include <utility/dbus_utility.hpp>
 #include <utility/json_utility.hpp>
 #include <utility/vpd_specific_utility.hpp>

 namespace vpd
 {
 IbmHandler::IbmHandler(
     std::shared_ptr<Worker>& o_worker,
     std::shared_ptr<BackupAndRestore>& o_backupAndRestoreObj,
     const std::shared_ptr<sdbusplus::asio::dbus_interface>& i_iFace,
     const std::shared_ptr<boost::asio::io_context>& i_ioCon,
     const std::shared_ptr<sdbusplus::asio::connection>& i_asioConnection) :
     m_worker(o_worker), m_backupAndRestoreObj(o_backupAndRestoreObj),
     m_interface(i_iFace), m_ioContext(i_ioCon),
     m_asioConnection(i_asioConnection)
 {
     if (dbusUtility::isChassisPowerOn())
     {
         // At power on, less number of FRU(s) needs collection. we can scale
         // down the threads to reduce CPU utilization.
         m_worker = std::make_shared<Worker>(INVENTORY_JSON_DEFAULT,
                                             constants::VALUE_1);
     }
     else
     {
         // Initialize with default configuration
         m_worker = std::make_shared<Worker>(INVENTORY_JSON_DEFAULT);
     }

     // Set up minimal things that is needed before bus name is claimed.
     m_worker->performInitialSetup();

     // Get the system config JSON object
     m_sysCfgJsonObj = m_worker->getSysCfgJsonObj();

     if (!m_sysCfgJsonObj.empty() &&
         jsonUtility::isBackupAndRestoreRequired(m_sysCfgJsonObj))
     {
         try
         {
             m_backupAndRestoreObj =
                 std::make_shared<BackupAndRestore>(m_sysCfgJsonObj);
         }
         catch (const std::exception& l_ex)
         {
             logging::logMessage("Back up and restore instantiation failed. {" +
                                 std::string(l_ex.what()) + "}");

             EventLogger::createSyncPel(
                 EventLogger::getErrorType(l_ex), types::SeverityType::Warning,
                 __FILE__, __FUNCTION__, 0, EventLogger::getErrorMsg(l_ex),
                 std::nullopt, std::nullopt, std::nullopt, std::nullopt);
         }
     }

     // callback to detect host state change.
     registerHostStateChangeCallback();

     // set callback to detect any asset tag change
     registerAssetTagChangeCallback();

     // set async timer to detect if system VPD is published on D-Bus.
     SetTimerToDetectSVPDOnDbus();

     // set async timer to detect if VPD collection is done.
     SetTimerToDetectVpdCollectionStatus();

     // Instantiate GpioMonitor class
     m_gpioMonitor =
         std::make_shared<GpioMonitor>(m_sysCfgJsonObj, m_worker, m_ioContext);
 }

 void IbmHandler::registerAssetTagChangeCallback()
 {
     static std::shared_ptr<sdbusplus::bus::match_t> l_assetMatch =
         std::make_shared<sdbusplus::bus::match_t>(
             *m_asioConnection,
             sdbusplus::bus::match::rules::propertiesChanged(
                 constants::systemInvPath, constants::assetTagInf),
             [this](sdbusplus::message_t& l_msg) {
                 processAssetTagChangeCallback(l_msg);
             });
 }

 void IbmHandler::processAssetTagChangeCallback(sdbusplus::message_t& i_msg)
 {
     try
     {
         if (i_msg.is_method_error())
         {
             throw std::runtime_error(
                 "Error reading callback msg for asset tag.");
         }

         std::string l_objectPath;
         types::PropertyMap l_propMap;
         i_msg.read(l_objectPath, l_propMap);

         const auto& l_itrToAssetTag = l_propMap.find("AssetTag");
         if (l_itrToAssetTag != l_propMap.end())
         {
             if (auto l_assetTag =
                     std::get_if<std::string>(&(l_itrToAssetTag->second)))
             {
                 // Call Notify to persist the AssetTag
                 types::ObjectMap l_objectMap = {
                     {sdbusplus::message::object_path(constants::systemInvPath),
                      {{constants::assetTagInf, {{"AssetTag", *l_assetTag}}}}}};

                 // Notify PIM
                 if (!dbusUtility::callPIM(move(l_objectMap)))
                 {
                     throw std::runtime_error(
                         "Call to PIM failed for asset tag update.");
                 }
             }
         }
         else
         {
             throw std::runtime_error(
                 "Could not find asset tag in callback message.");
         }
     }
     catch (const std::exception& l_ex)
     {
         // TODO: Log PEL with below description.
         logging::logMessage("Asset tag callback update failed with error: " +
                             std::string(l_ex.what()));
     }
 }

 void IbmHandler::SetTimerToDetectSVPDOnDbus()
 {
     try
     {
         static boost::asio::steady_timer timer(*m_ioContext);

         // timer for 2 seconds
         auto asyncCancelled = timer.expires_after(std::chrono::seconds(2));

         (asyncCancelled == 0) ? logging::logMessage("Timer started")
                               : logging::logMessage("Timer re-started");

         timer.async_wait([this](const boost::system::error_code& ec) {
             if (ec == boost::asio::error::operation_aborted)
             {
                 throw std::runtime_error(
                     std::string(__FUNCTION__) +
                     ": Timer to detect system VPD collection status was aborted.");
             }

             if (ec)
             {
                 throw std::runtime_error(
                     std::string(__FUNCTION__) +
                     ": Timer to detect System VPD collection failed");
             }

             if (m_worker->isSystemVPDOnDBus())
             {
                 // cancel the timer
                 timer.cancel();

                 // Triggering FRU VPD collection. Setting status to "In
                 // Progress".
                 m_interface->set_property("CollectionStatus",
                                           std::string("InProgress"));
                 m_worker->collectFrusFromJson();
             }
         });
     }
     catch (const std::exception& l_ex)
     {
         EventLogger::createAsyncPel(
             EventLogger::getErrorType(l_ex), types::SeverityType::Critical,
             __FILE__, __FUNCTION__, 0,
             std::string("Collection for FRUs failed with reason:") +
                 EventLogger::getErrorMsg(l_ex),
             std::nullopt, std::nullopt, std::nullopt, std::nullopt);
     }
 }

 void IbmHandler::SetTimerToDetectVpdCollectionStatus()
 {
     // Keeping max retry for 2 minutes. TODO: Make it configurable based on
     // system type.
     static constexpr auto MAX_RETRY = 12;

     static boost::asio::steady_timer l_timer(*m_ioContext);
     static uint8_t l_timerRetry = 0;

     auto l_asyncCancelled = l_timer.expires_after(std::chrono::seconds(10));

     (l_asyncCancelled == 0)
         ? logging::logMessage("Collection Timer started")
         : logging::logMessage("Collection Timer re-started");

     l_timer.async_wait([this](const boost::system::error_code& ec) {
         if (ec == boost::asio::error::operation_aborted)
         {
             throw std::runtime_error(
                 "Timer to detect thread collection status was aborted");
         }

         if (ec)
         {
             throw std::runtime_error(
                 "Timer to detect thread collection failed");
         }

         if (m_worker->isAllFruCollectionDone())
         {
             // cancel the timer
             l_timer.cancel();
             processFailedEeproms();

             // update VPD for powerVS system.
             ConfigurePowerVsSystem();

             std::cout << "m_worker->isSystemVPDOnDBus() completed" << std::endl;
             m_interface->set_property("CollectionStatus",
                                       std::string("Completed"));

             if (m_backupAndRestoreObj)
             {
                 m_backupAndRestoreObj->backupAndRestore();
             }
         }
         else
         {
             auto l_threadCount = m_worker->getActiveThreadCount();
             if (l_timerRetry == MAX_RETRY)
             {
                 l_timer.cancel();
                 logging::logMessage("Taking too long. Active thread = " +
                                     std::to_string(l_threadCount));
             }
             else
             {
                 l_timerRetry++;
                 logging::logMessage("Collection is in progress for [" +
                                     std::to_string(l_threadCount) + "] FRUs.");

                 SetTimerToDetectVpdCollectionStatus();
             }
         }
     });
 }

 void IbmHandler::checkAndUpdatePowerVsVpd(
     const nlohmann::json& i_powerVsJsonObj,
     std::vector<std::string>& o_failedPathList)
 {
     for (const auto& [l_fruPath, l_recJson] : i_powerVsJsonObj.items())
     {
         nlohmann::json l_sysCfgJsonObj{};
         if (m_worker.get() != nullptr)
         {
             l_sysCfgJsonObj = m_worker->getSysCfgJsonObj();
         }

         // The utility method will handle emty JSON case. No explicit
         // handling required here.
         auto l_inventoryPath = jsonUtility::getInventoryObjPathFromJson(
             l_sysCfgJsonObj, l_fruPath);

         // Mark it as failed if inventory path not found in JSON.
         if (l_inventoryPath.empty())
         {
             o_failedPathList.push_back(l_fruPath);
             continue;
         }

         // check if the FRU is present
         if (!dbusUtility::isInventoryPresent(l_inventoryPath))
         {
             logging::logMessage(
                 "Inventory not present, skip updating part number. Path: " +
                 l_inventoryPath);
             continue;
         }

         // check if the FRU needs CCIN check before updating PN.
         if (l_recJson.contains("CCIN"))
         {
             const auto& l_ccinFromDbus =
                 vpdSpecificUtility::getCcinFromDbus(l_inventoryPath);

             // Not an ideal situation as CCIN can't be empty.
             if (l_ccinFromDbus.empty())
             {
                 o_failedPathList.push_back(l_fruPath);
                 continue;
             }

             std::vector<std::string> l_ccinListFromJson = l_recJson["CCIN"];

             if (find(l_ccinListFromJson.begin(), l_ccinListFromJson.end(),
                      l_ccinFromDbus) == l_ccinListFromJson.end())
             {
                 // Don't update PN in this case.
                 continue;
             }
         }

         for (const auto& [l_recordName, l_kwdJson] : l_recJson.items())
         {
             // Record name can't be CCIN, skip processing as it is there for PN
             // update based on CCIN check.
             if (l_recordName == constants::kwdCCIN)
             {
                 continue;
             }

             for (const auto& [l_kwdName, l_kwdValue] : l_kwdJson.items())
             {
                 // Is value of type array.
                 if (!l_kwdValue.is_array())
                 {
                     o_failedPathList.push_back(l_fruPath);
                     continue;
                 }

                 // Get current FRU Part number.
                 auto l_retVal = dbusUtility::readDbusProperty(
                     constants::pimServiceName, l_inventoryPath,
                     constants::viniInf, constants::kwdFN);

                 auto l_ptrToFn = std::get_if<types::BinaryVector>(&l_retVal);

                 if (!l_ptrToFn)
                 {
                     o_failedPathList.push_back(l_fruPath);
                     continue;
                 }

                 types::BinaryVector l_binaryKwdValue =
                     l_kwdValue.get<types::BinaryVector>();
                 if (l_binaryKwdValue == (*l_ptrToFn))
                 {
                     continue;
                 }

                 // Update part number only if required.
                 std::shared_ptr<Parser> l_parserObj =
                     std::make_shared<Parser>(l_fruPath, l_sysCfgJsonObj);
                 if (l_parserObj->updateVpdKeyword(std::make_tuple(
                         l_recordName, l_kwdName, l_binaryKwdValue)) ==
                     constants::FAILURE)
                 {
                     o_failedPathList.push_back(l_fruPath);
                     continue;
                 }

                 // update the Asset interface Spare part number explicitly.
                 if (!dbusUtility::callPIM(types::ObjectMap{
                         {l_inventoryPath,
                          {{constants::assetInf,
                            {{"SparePartNumber",
                              std::string(l_binaryKwdValue.begin(),
                                          l_binaryKwdValue.end())}}}}}}))
                 {
                     logging::logMessage(
                         "Updating Spare Part Number under Asset interface failed for path [" +
                         l_inventoryPath + "]");
                 }

                 // Just needed for logging.
                 std::string l_initialPartNum((*l_ptrToFn).begin(),
                                              (*l_ptrToFn).end());
                 std::string l_finalPartNum(l_binaryKwdValue.begin(),
                                            l_binaryKwdValue.end());
                 logging::logMessage(
                     "FRU Part number updated for path [" + l_inventoryPath +
                     "]" + "From [" + l_initialPartNum + "]" + " to [" +
                     l_finalPartNum + "]");
             }
         }
     }
 }

 void IbmHandler::ConfigurePowerVsSystem()
 {
     std::vector<std::string> l_failedPathList;
     try
     {
         types::BinaryVector l_imValue = dbusUtility::getImFromDbus();
         if (l_imValue.empty())
         {
             throw DbusException("Invalid IM value read from Dbus");
         }

         if (!vpdSpecificUtility::isPowerVsConfiguration(l_imValue))
         {
             // TODO: Should booting be blocked in case of some
             // misconfigurations?
             return;
         }

         const nlohmann::json& l_powerVsJsonObj =
             jsonUtility::getPowerVsJson(l_imValue);

         if (l_powerVsJsonObj.empty())
         {
             throw std::runtime_error("PowerVS Json not found");
         }

         checkAndUpdatePowerVsVpd(l_powerVsJsonObj, l_failedPathList);

         if (!l_failedPathList.empty())
         {
             throw std::runtime_error(
                 "Part number update failed for following paths: ");
         }
     }
     catch (const std::exception& l_ex)
     {
         // TODO log appropriate PEL
     }
 }

 void IbmHandler::processFailedEeproms()
 {
     if (m_worker.get() != nullptr)
     {
         // TODO:
         // - iterate through list of EEPROMs for which thread creation has
         // failed
         // - For each failed EEPROM, trigger VPD collection
         m_worker->getFailedEepromPaths().clear();
     }
 }

 void IbmHandler::registerHostStateChangeCallback()
 {
     static std::shared_ptr<sdbusplus::bus::match_t> l_hostState =
         std::make_shared<sdbusplus::bus::match_t>(
             *m_asioConnection,
             sdbusplus::bus::match::rules::propertiesChanged(
                 constants::hostObjectPath, constants::hostInterface),
             [this](sdbusplus::message_t& i_msg) {
                 hostStateChangeCallBack(i_msg);
             });
 }

 void IbmHandler::hostStateChangeCallBack(sdbusplus::message_t& i_msg)
 {
     try
     {
         if (i_msg.is_method_error())
         {
             throw std::runtime_error(
                 "Error reading callback message for host state");
         }

         std::string l_objectPath;
         types::PropertyMap l_propMap;
         i_msg.read(l_objectPath, l_propMap);

         const auto l_itr = l_propMap.find("CurrentHostState");

         if (l_itr == l_propMap.end())
         {
             throw std::runtime_error(
                 "CurrentHostState field is missing in callback message");
         }

         if (auto l_hostState = std::get_if<std::string>(&(l_itr->second)))
         {
             // implies system is moving from standby to power on state
             if (*l_hostState == "xyz.openbmc_project.State.Host.HostState."
                                 "TransitioningToRunning")
             {
                 // TODO: check for all the essential FRUs in the system.

                 if (m_worker.get() != nullptr)
                 {
                     // Perform recollection.
                     m_worker->performVpdRecollection();
                 }
                 else
                 {
                     logging::logMessage(
                         "Failed to get worker object, Abort re-collection");
                 }
             }
         }
         else
         {
             throw std::runtime_error(
                 "Invalid type recieved in variant for host state.");
         }
     }
     catch (const std::exception& l_ex)
     {
         // TODO: Log PEL.
         logging::logMessage(l_ex.what());
     }
 }
 } // namespace vpd
	#include "config.h"

	#include "ibm_handler.hpp"

	#include "parser.hpp"

	#include <utility/dbus_utility.hpp>
	#include <utility/json_utility.hpp>
	#include <utility/vpd_specific_utility.hpp>

	namespace vpd
	{
	IbmHandler::IbmHandler(
	std::shared_ptr<Worker>& o_worker,
	std::shared_ptr<BackupAndRestore>& o_backupAndRestoreObj,
	const std::shared_ptr<sdbusplus::asio::dbus_interface>& i_iFace,
	const std::shared_ptr<boost::asio::io_context>& i_ioCon,
	const std::shared_ptr<sdbusplus::asio::connection>& i_asioConnection) :
	m_worker(o_worker), m_backupAndRestoreObj(o_backupAndRestoreObj),
	m_interface(i_iFace), m_ioContext(i_ioCon),
	m_asioConnection(i_asioConnection)
	{
	if (dbusUtility::isChassisPowerOn())
	{
	// At power on, less number of FRU(s) needs collection. we can scale
	// down the threads to reduce CPU utilization.
	m_worker = std::make_shared<Worker>(INVENTORY_JSON_DEFAULT,
	constants::VALUE_1);
	}
	else
	{
	// Initialize with default configuration
	m_worker = std::make_shared<Worker>(INVENTORY_JSON_DEFAULT);
	}

	// Set up minimal things that is needed before bus name is claimed.
	m_worker->performInitialSetup();

	// Get the system config JSON object
	m_sysCfgJsonObj = m_worker->getSysCfgJsonObj();

	if (!m_sysCfgJsonObj.empty() &&
	jsonUtility::isBackupAndRestoreRequired(m_sysCfgJsonObj))
	{
	try
	{
	m_backupAndRestoreObj =
	std::make_shared<BackupAndRestore>(m_sysCfgJsonObj);
	}
	catch (const std::exception& l_ex)
	{
	logging::logMessage("Back up and restore instantiation failed. {" +
	std::string(l_ex.what()) + "}");

	EventLogger::createSyncPel(
	EventLogger::getErrorType(l_ex), types::SeverityType::Warning,
	__FILE__, __FUNCTION__, 0, EventLogger::getErrorMsg(l_ex),
	std::nullopt, std::nullopt, std::nullopt, std::nullopt);
	}
	}

	// callback to detect host state change.
	registerHostStateChangeCallback();

	// set callback to detect any asset tag change
	registerAssetTagChangeCallback();

	// set async timer to detect if system VPD is published on D-Bus.
	SetTimerToDetectSVPDOnDbus();

	// set async timer to detect if VPD collection is done.
	SetTimerToDetectVpdCollectionStatus();

	// Instantiate GpioMonitor class
	m_gpioMonitor =
	std::make_shared<GpioMonitor>(m_sysCfgJsonObj, m_worker, m_ioContext);
	}

	void IbmHandler::registerAssetTagChangeCallback()
	{
	static std::shared_ptr<sdbusplus::bus::match_t> l_assetMatch =
	std::make_shared<sdbusplus::bus::match_t>(
	*m_asioConnection,
	sdbusplus::bus::match::rules::propertiesChanged(
	constants::systemInvPath, constants::assetTagInf),
	[this](sdbusplus::message_t& l_msg) {
	processAssetTagChangeCallback(l_msg);
	});
	}

	void IbmHandler::processAssetTagChangeCallback(sdbusplus::message_t& i_msg)
	{
	try
	{
	if (i_msg.is_method_error())
	{
	throw std::runtime_error(
	"Error reading callback msg for asset tag.");
	}

	std::string l_objectPath;
	types::PropertyMap l_propMap;
	i_msg.read(l_objectPath, l_propMap);

	const auto& l_itrToAssetTag = l_propMap.find("AssetTag");
	if (l_itrToAssetTag != l_propMap.end())
	{
	if (auto l_assetTag =
	std::get_if<std::string>(&(l_itrToAssetTag->second)))
	{
	// Call Notify to persist the AssetTag
	types::ObjectMap l_objectMap = {
	{sdbusplus::message::object_path(constants::systemInvPath),
	{{constants::assetTagInf, {{"AssetTag", *l_assetTag}}}}}};

	// Notify PIM
	if (!dbusUtility::callPIM(move(l_objectMap)))
	{
	throw std::runtime_error(
	"Call to PIM failed for asset tag update.");
	}
	}
	}
	else
	{
	throw std::runtime_error(
	"Could not find asset tag in callback message.");
	}
	}
	catch (const std::exception& l_ex)
	{
	// TODO: Log PEL with below description.
	logging::logMessage("Asset tag callback update failed with error: " +
	std::string(l_ex.what()));
	}
	}

	void IbmHandler::SetTimerToDetectSVPDOnDbus()
	{
	try
	{
	static boost::asio::steady_timer timer(*m_ioContext);

	// timer for 2 seconds
	auto asyncCancelled = timer.expires_after(std::chrono::seconds(2));

	(asyncCancelled == 0) ? logging::logMessage("Timer started")
	: logging::logMessage("Timer re-started");

	timer.async_wait([this](const boost::system::error_code& ec) {
	if (ec == boost::asio::error::operation_aborted)
	{
	throw std::runtime_error(
	std::string(__FUNCTION__) +
	": Timer to detect system VPD collection status was aborted.");
	}

	if (ec)
	{
	throw std::runtime_error(
	std::string(__FUNCTION__) +
	": Timer to detect System VPD collection failed");
	}

	if (m_worker->isSystemVPDOnDBus())
	{
	// cancel the timer
	timer.cancel();

	// Triggering FRU VPD collection. Setting status to "In
	// Progress".
	m_interface->set_property("CollectionStatus",
	std::string("InProgress"));
	m_worker->collectFrusFromJson();
	}
	});
	}
	catch (const std::exception& l_ex)
	{
	EventLogger::createAsyncPel(
	EventLogger::getErrorType(l_ex), types::SeverityType::Critical,
	__FILE__, __FUNCTION__, 0,
	std::string("Collection for FRUs failed with reason:") +
	EventLogger::getErrorMsg(l_ex),
	std::nullopt, std::nullopt, std::nullopt, std::nullopt);
	}
	}

	void IbmHandler::SetTimerToDetectVpdCollectionStatus()
	{
	// Keeping max retry for 2 minutes. TODO: Make it configurable based on
	// system type.
	static constexpr auto MAX_RETRY = 12;

	static boost::asio::steady_timer l_timer(*m_ioContext);
	static uint8_t l_timerRetry = 0;

	auto l_asyncCancelled = l_timer.expires_after(std::chrono::seconds(10));

	(l_asyncCancelled == 0)
	? logging::logMessage("Collection Timer started")
	: logging::logMessage("Collection Timer re-started");

	l_timer.async_wait([this](const boost::system::error_code& ec) {
	if (ec == boost::asio::error::operation_aborted)
	{
	throw std::runtime_error(
	"Timer to detect thread collection status was aborted");
	}

	if (ec)
	{
	throw std::runtime_error(
	"Timer to detect thread collection failed");
	}

	if (m_worker->isAllFruCollectionDone())
	{
	// cancel the timer
	l_timer.cancel();
	processFailedEeproms();

	// update VPD for powerVS system.
	ConfigurePowerVsSystem();

	std::cout << "m_worker->isSystemVPDOnDBus() completed" << std::endl;
	m_interface->set_property("CollectionStatus",
	std::string("Completed"));

	if (m_backupAndRestoreObj)
	{
	m_backupAndRestoreObj->backupAndRestore();
	}
	}
	else
	{
	auto l_threadCount = m_worker->getActiveThreadCount();
	if (l_timerRetry == MAX_RETRY)
	{
	l_timer.cancel();
	logging::logMessage("Taking too long. Active thread = " +
	std::to_string(l_threadCount));
	}
	else
	{
	l_timerRetry++;
	logging::logMessage("Collection is in progress for [" +
	std::to_string(l_threadCount) + "] FRUs.");

	SetTimerToDetectVpdCollectionStatus();
	}
	}
	});
	}

	void IbmHandler::checkAndUpdatePowerVsVpd(
	const nlohmann::json& i_powerVsJsonObj,
	std::vector<std::string>& o_failedPathList)
	{
	for (const auto& [l_fruPath, l_recJson] : i_powerVsJsonObj.items())
	{
	nlohmann::json l_sysCfgJsonObj{};
	if (m_worker.get() != nullptr)
	{
	l_sysCfgJsonObj = m_worker->getSysCfgJsonObj();
	}

	// The utility method will handle emty JSON case. No explicit
	// handling required here.
	auto l_inventoryPath = jsonUtility::getInventoryObjPathFromJson(
	l_sysCfgJsonObj, l_fruPath);

	// Mark it as failed if inventory path not found in JSON.
	if (l_inventoryPath.empty())
	{
	o_failedPathList.push_back(l_fruPath);
	continue;
	}

	// check if the FRU is present
	if (!dbusUtility::isInventoryPresent(l_inventoryPath))
	{
	logging::logMessage(
	"Inventory not present, skip updating part number. Path: " +
	l_inventoryPath);
	continue;
	}

	// check if the FRU needs CCIN check before updating PN.
	if (l_recJson.contains("CCIN"))
	{
	const auto& l_ccinFromDbus =
	vpdSpecificUtility::getCcinFromDbus(l_inventoryPath);

	// Not an ideal situation as CCIN can't be empty.
	if (l_ccinFromDbus.empty())
	{
	o_failedPathList.push_back(l_fruPath);
	continue;
	}

	std::vector<std::string> l_ccinListFromJson = l_recJson["CCIN"];

	if (find(l_ccinListFromJson.begin(), l_ccinListFromJson.end(),
	l_ccinFromDbus) == l_ccinListFromJson.end())
	{
	// Don't update PN in this case.
	continue;
	}
	}

	for (const auto& [l_recordName, l_kwdJson] : l_recJson.items())
	{
	// Record name can't be CCIN, skip processing as it is there for PN
	// update based on CCIN check.
	if (l_recordName == constants::kwdCCIN)
	{
	continue;
	}

	for (const auto& [l_kwdName, l_kwdValue] : l_kwdJson.items())
	{
	// Is value of type array.
	if (!l_kwdValue.is_array())
	{
	o_failedPathList.push_back(l_fruPath);
	continue;
	}

	// Get current FRU Part number.
	auto l_retVal = dbusUtility::readDbusProperty(
	constants::pimServiceName, l_inventoryPath,
	constants::viniInf, constants::kwdFN);

	auto l_ptrToFn = std::get_if<types::BinaryVector>(&l_retVal);

	if (!l_ptrToFn)
	{
	o_failedPathList.push_back(l_fruPath);
	continue;
	}

	types::BinaryVector l_binaryKwdValue =
	l_kwdValue.get<types::BinaryVector>();
	if (l_binaryKwdValue == (*l_ptrToFn))
	{
	continue;
	}

	// Update part number only if required.
	std::shared_ptr<Parser> l_parserObj =
	std::make_shared<Parser>(l_fruPath, l_sysCfgJsonObj);
	if (l_parserObj->updateVpdKeyword(std::make_tuple(
	l_recordName, l_kwdName, l_binaryKwdValue)) ==
	constants::FAILURE)
	{
	o_failedPathList.push_back(l_fruPath);
	continue;
	}

	// update the Asset interface Spare part number explicitly.
	if (!dbusUtility::callPIM(types::ObjectMap{
	{l_inventoryPath,
	{{constants::assetInf,
	{{"SparePartNumber",
	std::string(l_binaryKwdValue.begin(),
	l_binaryKwdValue.end())}}}}}}))
	{
	logging::logMessage(
	"Updating Spare Part Number under Asset interface failed for path [" +
	l_inventoryPath + "]");
	}

	// Just needed for logging.
	std::string l_initialPartNum((*l_ptrToFn).begin(),
	(*l_ptrToFn).end());
	std::string l_finalPartNum(l_binaryKwdValue.begin(),
	l_binaryKwdValue.end());
	logging::logMessage(
	"FRU Part number updated for path [" + l_inventoryPath +
	"]" + "From [" + l_initialPartNum + "]" + " to [" +
	l_finalPartNum + "]");
	}
	}
	}
	}

	void IbmHandler::ConfigurePowerVsSystem()
	{
	std::vector<std::string> l_failedPathList;
	try
	{
	types::BinaryVector l_imValue = dbusUtility::getImFromDbus();
	if (l_imValue.empty())
	{
	throw DbusException("Invalid IM value read from Dbus");
	}

	if (!vpdSpecificUtility::isPowerVsConfiguration(l_imValue))
	{
	// TODO: Should booting be blocked in case of some
	// misconfigurations?
	return;
	}

	const nlohmann::json& l_powerVsJsonObj =
	jsonUtility::getPowerVsJson(l_imValue);

	if (l_powerVsJsonObj.empty())
	{
	throw std::runtime_error("PowerVS Json not found");
	}

	checkAndUpdatePowerVsVpd(l_powerVsJsonObj, l_failedPathList);

	if (!l_failedPathList.empty())
	{
	throw std::runtime_error(
	"Part number update failed for following paths: ");
	}
	}
	catch (const std::exception& l_ex)
	{
	// TODO log appropriate PEL
	}
	}

	void IbmHandler::processFailedEeproms()
	{
	if (m_worker.get() != nullptr)
	{
	// TODO:
	// - iterate through list of EEPROMs for which thread creation has
	// failed
	// - For each failed EEPROM, trigger VPD collection
	m_worker->getFailedEepromPaths().clear();
	}
	}

	void IbmHandler::registerHostStateChangeCallback()
	{
	static std::shared_ptr<sdbusplus::bus::match_t> l_hostState =
	std::make_shared<sdbusplus::bus::match_t>(
	*m_asioConnection,
	sdbusplus::bus::match::rules::propertiesChanged(
	constants::hostObjectPath, constants::hostInterface),
	[this](sdbusplus::message_t& i_msg) {
	hostStateChangeCallBack(i_msg);
	});
	}

	void IbmHandler::hostStateChangeCallBack(sdbusplus::message_t& i_msg)
	{
	try
	{
	if (i_msg.is_method_error())
	{
	throw std::runtime_error(
	"Error reading callback message for host state");
	}

	std::string l_objectPath;
	types::PropertyMap l_propMap;
	i_msg.read(l_objectPath, l_propMap);

	const auto l_itr = l_propMap.find("CurrentHostState");

	if (l_itr == l_propMap.end())
	{
	throw std::runtime_error(
	"CurrentHostState field is missing in callback message");
	}

	if (auto l_hostState = std::get_if<std::string>(&(l_itr->second)))
	{
	// implies system is moving from standby to power on state
	if (*l_hostState == "xyz.openbmc_project.State.Host.HostState."
	"TransitioningToRunning")
	{
	// TODO: check for all the essential FRUs in the system.

	if (m_worker.get() != nullptr)
	{
	// Perform recollection.
	m_worker->performVpdRecollection();
	}
	else
	{
	logging::logMessage(
	"Failed to get worker object, Abort re-collection");
	}
	}
	}
	else
	{
	throw std::runtime_error(
	"Invalid type recieved in variant for host state.");
	}
	}
	catch (const std::exception& l_ex)
	{
	// TODO: Log PEL.
	logging::logMessage(l_ex.what());
	}
	}
	} // namespace vpd