src/sel_logger.cpp - openbmc/phosphor-sel-logger - Gitiles

 /*
 // Copyright (c) 2018 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 <systemd/sd-journal.h>

 #include <boost/algorithm/string.hpp>
 #include <boost/asio/io_context.hpp>
 #include <boost/container/flat_map.hpp>
 #include <boost/container/flat_set.hpp>
 #include <pulse_event_monitor.hpp>
 #include <sdbusplus/asio/object_server.hpp>
 #include <sel_logger.hpp>
 #include <threshold_event_monitor.hpp>
 #include <watchdog_event_monitor.hpp>
 #ifdef SEL_LOGGER_ENABLE_SEL_DELETE
 #include <xyz/openbmc_project/Common/error.hpp>
 #endif
 #ifdef SEL_LOGGER_MONITOR_THRESHOLD_ALARM_EVENTS
 #include <threshold_alarm_event_monitor.hpp>
 #endif
 #ifdef SEL_LOGGER_MONITOR_HOST_ERROR_EVENTS
 #include <host_error_event_monitor.hpp>
 #endif

 #include <filesystem>
 #include <fstream>
 #include <iomanip>
 #include <iostream>
 #include <sstream>

 struct DBusInternalError final : public sdbusplus::exception_t
 {
     const char* name() const noexcept override
     {
         return "org.freedesktop.DBus.Error.Failed";
     }
     const char* description() const noexcept override
     {
         return "internal error";
     }
     const char* what() const noexcept override
     {
         return "org.freedesktop.DBus.Error.Failed: "
                "internal error";
     }

     int get_errno() const noexcept override
     {
         return EACCES;
     }
 };

 #ifndef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
 static bool getSELLogFiles(std::vector<std::filesystem::path>& selLogFiles)
 {
     // Loop through the directory looking for ipmi_sel log files
     for (const std::filesystem::directory_entry& dirEnt :
          std::filesystem::directory_iterator(selLogDir))
     {
         std::string filename = dirEnt.path().filename();
         if (boost::starts_with(filename, selLogFilename))
         {
             // If we find an ipmi_sel log file, save the path
             selLogFiles.emplace_back(selLogDir / filename);
         }
     }
     // As the log files rotate, they are appended with a ".#" that is higher for
     // the older logs. Since we don't expect more than 10 log files, we
     // can just sort the list to get them in order from newest to oldest
     std::sort(selLogFiles.begin(), selLogFiles.end());

     return !selLogFiles.empty();
 }

 static void saveClearSelTimestamp()
 {
     int fd = open("/var/lib/ipmi/sel_erase_time",
                   O_WRONLY | O_CREAT | O_CLOEXEC, 0644);
     if (fd < 0)
     {
         std::cerr << "Failed to open file\n";
         return;
     }

     if (futimens(fd, NULL) < 0)
     {
         std::cerr << "Failed to update SEL cleared timestamp: "
                   << std::string(strerror(errno));
     }
     close(fd);
 }

 #ifdef SEL_LOGGER_ENABLE_SEL_DELETE
 std::vector<uint16_t> nextRecordsCache;

 static void backupCacheToFile()
 {
     std::ofstream nextRecordStream(selLogDir / nextRecordFilename);
     for (auto recordIds : nextRecordsCache)
     {
         nextRecordStream << recordIds << '\n';
     }
 }

 static uint16_t getNewRecordId()
 {
     uint16_t nextRecordId = nextRecordsCache.back();
     // Check if SEL is full
     if (nextRecordId == selInvalidRecID)
     {
         return nextRecordId;
     }
     nextRecordsCache.pop_back();
     if (nextRecordsCache.empty())
     {
         nextRecordsCache.push_back(nextRecordId + 1);
     }
     backupCacheToFile();
     return nextRecordId;
 }

 static void initializeRecordId()
 {
     std::ifstream nextRecordStream(selLogDir / nextRecordFilename);
     if (!nextRecordStream.is_open())
     {
         std::ofstream newStream(selLogDir / nextRecordFilename);
         newStream << '1' << '\n';
         newStream.close();
         nextRecordStream.open(selLogDir / nextRecordFilename);
     }
     std::string line;
     while (std::getline(nextRecordStream, line))
     {
         nextRecordsCache.push_back(std::stoi(line));
     }
 }

 void clearSelLogFiles()
 {
     saveClearSelTimestamp();

     // Clear the SEL by deleting the log files
     std::vector<std::filesystem::path> selLogFiles;
     if (getSELLogFiles(selLogFiles))
     {
         for (const std::filesystem::path& file : selLogFiles)
         {
             std::error_code ec;
             std::filesystem::remove(file, ec);
         }
     }
     // Reload rsyslog so it knows to start new log files
     boost::asio::io_context io;
     auto dbus = std::make_shared<sdbusplus::asio::connection>(io);
     sdbusplus::message_t rsyslogReload = dbus->new_method_call(
         "org.freedesktop.systemd1", "/org/freedesktop/systemd1",
         "org.freedesktop.systemd1.Manager", "ReloadUnit");
     rsyslogReload.append("rsyslog.service", "replace");
     try
     {
         sdbusplus::message_t reloadResponse = dbus->call(rsyslogReload);
     }
     catch (const sdbusplus::exception_t& e)
     {
         std::cerr << e.what() << "\n";
     }
     // Set next record to 1
     nextRecordsCache.clear();
     nextRecordsCache.push_back(1);
     // Update backup file as well
     std::ofstream nextRecordStream(selLogDir / nextRecordFilename);
     nextRecordStream << '1' << '\n';
 }

 static bool selDeleteTargetRecord(const uint16_t& targetId)
 {
     bool targetEntryFound = false;
     // Check if the ipmi_sel exist and save the path
     std::vector<std::filesystem::path> selLogFiles;
     if (!getSELLogFiles(selLogFiles))
     {
         return targetEntryFound;
     }

     // Go over all the ipmi_sel files to remove the entry with the target ID
     for (const std::filesystem::path& file : selLogFiles)
     {
         std::fstream logStream(file, std::ios::in);
         std::fstream tempFile(selLogDir / "temp", std::ios::out);
         if (!logStream.is_open())
         {
             return targetEntryFound;
         }
         std::string line;
         while (std::getline(logStream, line))
         {
             // Get the recordId of the current entry
             int left = line.find(" ");
             int right = line.find(",");
             int recordLen = right - left;
             std::string recordId = line.substr(left, recordLen);
             int newRecordId = std::stoi(recordId);

             if (newRecordId != targetId)
             {
                 // Copy the entry from the original ipmi_sel to the temp file
                 tempFile << line << '\n';
             }
             else
             {
                 // Skip copying the target entry
                 targetEntryFound = true;
             }
         }
         logStream.close();
         tempFile.close();
         if (targetEntryFound)
         {
             std::fstream logStream(file, std::ios::out);
             std::fstream tempFile(selLogDir / "temp", std::ios::in);
             while (std::getline(tempFile, line))
             {
                 logStream << line << '\n';
             }
             logStream.close();
             tempFile.close();
             std::error_code ec;
             if (!std::filesystem::remove(selLogDir / "temp", ec))
             {
                 std::cerr << ec.message() << std::endl;
             }
             break;
         }
     }
     return targetEntryFound;
 }

 static void selDeleteRecord(const uint16_t& recordId)
 {
     std::filesystem::file_time_type prevAddTime =
         std::filesystem::last_write_time(selLogDir / selLogFilename);
     bool targetEntryFound = selDeleteTargetRecord(recordId);

     // Check if the Record Id was found
     if (!targetEntryFound)
     {
         throw sdbusplus::xyz::openbmc_project::Common::Error::
             ResourceNotFound();
     }
     // Add to next record cache for reuse
     nextRecordsCache.push_back(recordId);
     // Add to backup file
     std::ofstream nextRecordStream(selLogDir / nextRecordFilename,
                                    std::ios::app);
     nextRecordStream << recordId << '\n';
     // Keep Last Add Time the same
     std::filesystem::last_write_time(selLogDir / selLogFilename, prevAddTime);
     // Update Last Del Time
     saveClearSelTimestamp();
 }
 #else
 static unsigned int initializeRecordId()
 {
     std::vector<std::filesystem::path> selLogFiles;
     if (!getSELLogFiles(selLogFiles))
     {
         return 0;
     }
     std::ifstream logStream(selLogFiles.front());
     if (!logStream.is_open())
     {
         return 0;
     }
     std::string line;
     std::string newestEntry;
     while (std::getline(logStream, line))
     {
         newestEntry = line;
     }

     std::vector<std::string> newestEntryFields;
     boost::split(newestEntryFields, newestEntry, boost::is_any_of(" ,"),
                  boost::token_compress_on);
     if (newestEntryFields.size() < 4)
     {
         return 0;
     }

     return std::stoul(newestEntryFields[1]);
 }

 static unsigned int recordId = initializeRecordId();

 static unsigned int getNewRecordId()
 {
     if (++recordId >= selInvalidRecID)
     {
         recordId = selInvalidRecID;
     }
     return recordId;
 }

 void clearSelLogFiles()
 {
     saveClearSelTimestamp();

     // Clear the SEL by deleting the log files
     std::vector<std::filesystem::path> selLogFiles;
     if (getSELLogFiles(selLogFiles))
     {
         for (const std::filesystem::path& file : selLogFiles)
         {
             std::error_code ec;
             std::filesystem::remove(file, ec);
         }
     }

     recordId = 0;

     // Reload rsyslog so it knows to start new log files
     boost::asio::io_context io;
     auto dbus = std::make_shared<sdbusplus::asio::connection>(io);
     sdbusplus::message_t rsyslogReload = dbus->new_method_call(
         "org.freedesktop.systemd1", "/org/freedesktop/systemd1",
         "org.freedesktop.systemd1.Manager", "ReloadUnit");
     rsyslogReload.append("rsyslog.service", "replace");
     try
     {
         sdbusplus::message_t reloadResponse = dbus->call(rsyslogReload);
     }
     catch (const sdbusplus::exception_t& e)
     {
         std::cerr << e.what() << "\n";
     }
 }
 #endif
 #endif

 static void toHexStr(const std::vector<uint8_t>& data, std::string& hexStr)
 {
     std::stringstream stream;
     stream << std::hex << std::uppercase << std::setfill('0');
     for (int v : data)
     {
         stream << std::setw(2) << v;
     }
     hexStr = stream.str();
 }

 template <typename... T>
 static uint16_t selAddSystemRecord(
     [[maybe_unused]] std::shared_ptr<sdbusplus::asio::connection> conn,
     [[maybe_unused]] const std::string& message, const std::string& path,
     const std::vector<uint8_t>& selData, const bool& assert,
     const uint16_t& genId, [[maybe_unused]] T&&... metadata)
 {
     // Only 3 bytes of SEL event data are allowed in a system record
     if (selData.size() > selEvtDataMaxSize)
     {
         throw std::invalid_argument("Event data too large");
     }
     std::string selDataStr;
     toHexStr(selData, selDataStr);

 #ifdef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
     sdbusplus::message_t AddToLog = conn->new_method_call(
         "xyz.openbmc_project.Logging", "/xyz/openbmc_project/logging",
         "xyz.openbmc_project.Logging.Create", "Create");

     std::string journalMsg(
         message + " from " + path + ": " +
         " RecordType=" + std::to_string(selSystemType) +
         ", GeneratorID=" + std::to_string(genId) +
         ", EventDir=" + std::to_string(assert) + ", EventData=" + selDataStr);

     AddToLog.append(
         journalMsg, "xyz.openbmc_project.Logging.Entry.Level.Informational",
         std::map<std::string, std::string>(
             {{"SENSOR_PATH", path},
              {"GENERATOR_ID", std::to_string(genId)},
              {"RECORD_TYPE", std::to_string(selSystemType)},
              {"EVENT_DIR", std::to_string(assert)},
              {"SENSOR_DATA", selDataStr}}));
     conn->call(AddToLog);
     return 0;
 #else
     unsigned int recordId = getNewRecordId();
     if (recordId < selInvalidRecID)
     {
         sd_journal_send(
             "MESSAGE=%s", message.c_str(), "PRIORITY=%i", selPriority,
             "MESSAGE_ID=%s", selMessageId, "IPMI_SEL_RECORD_ID=%d", recordId,
             "IPMI_SEL_RECORD_TYPE=%x", selSystemType,
             "IPMI_SEL_GENERATOR_ID=%x", genId, "IPMI_SEL_SENSOR_PATH=%s",
             path.c_str(), "IPMI_SEL_EVENT_DIR=%x", assert, "IPMI_SEL_DATA=%s",
             selDataStr.c_str(), std::forward<T>(metadata)..., NULL);
     }
     return recordId;
 #endif
 }

 static uint16_t selAddOemRecord(
     [[maybe_unused]] std::shared_ptr<sdbusplus::asio::connection> conn,
     [[maybe_unused]] const std::string& message,
     const std::vector<uint8_t>& selData, const uint8_t& recordType)
 {
     // A maximum of 13 bytes of SEL event data are allowed in an OEM record
     if (selData.size() > selOemDataMaxSize)
     {
         throw std::invalid_argument("Event data too large");
     }
     std::string selDataStr;
     toHexStr(selData, selDataStr);

 #ifdef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
     sdbusplus::message_t AddToLog = conn->new_method_call(
         "xyz.openbmc_project.Logging", "/xyz/openbmc_project/logging",
         "xyz.openbmc_project.Logging.Create", "Create");

     std::string journalMsg(
         message + ": " + " RecordType=" + std::to_string(recordType) +
         ", GeneratorID=" + std::to_string(0) +
         ", EventDir=" + std::to_string(0) + ", EventData=" + selDataStr);

     AddToLog.append(
         journalMsg, "xyz.openbmc_project.Logging.Entry.Level.Informational",
         std::map<std::string, std::string>(
             {{"SENSOR_PATH", ""},
              {"GENERATOR_ID", std::to_string(0)},
              {"RECORD_TYPE", std::to_string(recordType)},
              {"EVENT_DIR", std::to_string(0)},
              {"SENSOR_DATA", selDataStr}}));
     conn->call(AddToLog);
     return 0;
 #else
     unsigned int recordId = getNewRecordId();
     if (recordId < selInvalidRecID)
     {
         sd_journal_send("MESSAGE=%s", message.c_str(), "PRIORITY=%i",
                         selPriority, "MESSAGE_ID=%s", selMessageId,
                         "IPMI_SEL_RECORD_ID=%d", recordId,
                         "IPMI_SEL_RECORD_TYPE=%x", recordType,
                         "IPMI_SEL_DATA=%s", selDataStr.c_str(), NULL);
     }
     return recordId;
 #endif
 }

 int main(int, char*[])
 {
 #ifndef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
 #ifdef SEL_LOGGER_ENABLE_SEL_DELETE
     initializeRecordId();
 #endif
 #endif
     // setup connection to dbus
     boost::asio::io_context io;
     auto conn = std::make_shared<sdbusplus::asio::connection>(io);

     // IPMI SEL Object
     conn->request_name(ipmiSelObject);
     auto server = sdbusplus::asio::object_server(conn);

     // Add SEL Interface
     std::shared_ptr<sdbusplus::asio::dbus_interface> ifaceAddSel =
         server.add_interface(ipmiSelPath, ipmiSelAddInterface);

     // Add a new SEL entry
     ifaceAddSel->register_method(
         "IpmiSelAdd",
         [conn](const std::string& message, const std::string& path,
                const std::vector<uint8_t>& selData, const bool& assert,
                const uint16_t& genId) {
             return selAddSystemRecord(conn, message, path, selData, assert,
                                       genId);
         });
     // Add a new OEM SEL entry
     ifaceAddSel->register_method(
         "IpmiSelAddOem",
         [conn](const std::string& message, const std::vector<uint8_t>& selData,
                const uint8_t& recordType) {
             return selAddOemRecord(conn, message, selData, recordType);
         });

 #ifndef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
     // Clear SEL entries
     ifaceAddSel->register_method("Clear", []() { clearSelLogFiles(); });
 #ifdef SEL_LOGGER_ENABLE_SEL_DELETE
     // Delete a SEL entry
     ifaceAddSel->register_method("SELDelete", [](const uint16_t& recordId) {
         return selDeleteRecord(recordId);
     });
 #endif
 #endif
     ifaceAddSel->initialize();

 #ifdef SEL_LOGGER_MONITOR_THRESHOLD_EVENTS
     sdbusplus::bus::match_t thresholdAssertMonitor =
         startThresholdAssertMonitor(conn);
 #endif

 #ifdef REDFISH_LOG_MONITOR_PULSE_EVENTS
     sdbusplus::bus::match_t pulseEventMonitor = startPulseEventMonitor(conn);
 #endif

 #ifdef SEL_LOGGER_MONITOR_WATCHDOG_EVENTS
     sdbusplus::bus::match_t watchdogEventMonitor =
         startWatchdogEventMonitor(conn);
 #endif

 #ifdef SEL_LOGGER_MONITOR_THRESHOLD_ALARM_EVENTS
     startThresholdAlarmMonitor(conn);
 #endif

 #ifdef SEL_LOGGER_MONITOR_HOST_ERROR_EVENTS
     startHostErrorEventMonitor(conn);
 #endif
     io.run();

     return 0;
 }
	/*
	// Copyright (c) 2018 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 <systemd/sd-journal.h>

	#include <boost/algorithm/string.hpp>
	#include <boost/asio/io_context.hpp>
	#include <boost/container/flat_map.hpp>
	#include <boost/container/flat_set.hpp>
	#include <pulse_event_monitor.hpp>
	#include <sdbusplus/asio/object_server.hpp>
	#include <sel_logger.hpp>
	#include <threshold_event_monitor.hpp>
	#include <watchdog_event_monitor.hpp>
	#ifdef SEL_LOGGER_ENABLE_SEL_DELETE
	#include <xyz/openbmc_project/Common/error.hpp>
	#endif
	#ifdef SEL_LOGGER_MONITOR_THRESHOLD_ALARM_EVENTS
	#include <threshold_alarm_event_monitor.hpp>
	#endif
	#ifdef SEL_LOGGER_MONITOR_HOST_ERROR_EVENTS
	#include <host_error_event_monitor.hpp>
	#endif

	#include <filesystem>
	#include <fstream>
	#include <iomanip>
	#include <iostream>
	#include <sstream>

	struct DBusInternalError final : public sdbusplus::exception_t
	{
	const char* name() const noexcept override
	{
	return "org.freedesktop.DBus.Error.Failed";
	}
	const char* description() const noexcept override
	{
	return "internal error";
	}
	const char* what() const noexcept override
	{
	return "org.freedesktop.DBus.Error.Failed: "
	"internal error";
	}

	int get_errno() const noexcept override
	{
	return EACCES;
	}
	};

	#ifndef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
	static bool getSELLogFiles(std::vector<std::filesystem::path>& selLogFiles)
	{
	// Loop through the directory looking for ipmi_sel log files
	for (const std::filesystem::directory_entry& dirEnt :
	std::filesystem::directory_iterator(selLogDir))
	{
	std::string filename = dirEnt.path().filename();
	if (boost::starts_with(filename, selLogFilename))
	{
	// If we find an ipmi_sel log file, save the path
	selLogFiles.emplace_back(selLogDir / filename);
	}
	}
	// As the log files rotate, they are appended with a ".#" that is higher for
	// the older logs. Since we don't expect more than 10 log files, we
	// can just sort the list to get them in order from newest to oldest
	std::sort(selLogFiles.begin(), selLogFiles.end());

	return !selLogFiles.empty();
	}

	static void saveClearSelTimestamp()
	{
	int fd = open("/var/lib/ipmi/sel_erase_time",
	O_WRONLY \| O_CREAT \| O_CLOEXEC, 0644);
	if (fd < 0)
	{
	std::cerr << "Failed to open file\n";
	return;
	}

	if (futimens(fd, NULL) < 0)
	{
	std::cerr << "Failed to update SEL cleared timestamp: "
	<< std::string(strerror(errno));
	}
	close(fd);
	}

	#ifdef SEL_LOGGER_ENABLE_SEL_DELETE
	std::vector<uint16_t> nextRecordsCache;

	static void backupCacheToFile()
	{
	std::ofstream nextRecordStream(selLogDir / nextRecordFilename);
	for (auto recordIds : nextRecordsCache)
	{
	nextRecordStream << recordIds << '\n';
	}
	}

	static uint16_t getNewRecordId()
	{
	uint16_t nextRecordId = nextRecordsCache.back();
	// Check if SEL is full
	if (nextRecordId == selInvalidRecID)
	{
	return nextRecordId;
	}
	nextRecordsCache.pop_back();
	if (nextRecordsCache.empty())
	{
	nextRecordsCache.push_back(nextRecordId + 1);
	}
	backupCacheToFile();
	return nextRecordId;
	}

	static void initializeRecordId()
	{
	std::ifstream nextRecordStream(selLogDir / nextRecordFilename);
	if (!nextRecordStream.is_open())
	{
	std::ofstream newStream(selLogDir / nextRecordFilename);
	newStream << '1' << '\n';
	newStream.close();
	nextRecordStream.open(selLogDir / nextRecordFilename);
	}
	std::string line;
	while (std::getline(nextRecordStream, line))
	{
	nextRecordsCache.push_back(std::stoi(line));
	}
	}

	void clearSelLogFiles()
	{
	saveClearSelTimestamp();

	// Clear the SEL by deleting the log files
	std::vector<std::filesystem::path> selLogFiles;
	if (getSELLogFiles(selLogFiles))
	{
	for (const std::filesystem::path& file : selLogFiles)
	{
	std::error_code ec;
	std::filesystem::remove(file, ec);
	}
	}
	// Reload rsyslog so it knows to start new log files
	boost::asio::io_context io;
	auto dbus = std::make_shared<sdbusplus::asio::connection>(io);
	sdbusplus::message_t rsyslogReload = dbus->new_method_call(
	"org.freedesktop.systemd1", "/org/freedesktop/systemd1",
	"org.freedesktop.systemd1.Manager", "ReloadUnit");
	rsyslogReload.append("rsyslog.service", "replace");
	try
	{
	sdbusplus::message_t reloadResponse = dbus->call(rsyslogReload);
	}
	catch (const sdbusplus::exception_t& e)
	{
	std::cerr << e.what() << "\n";
	}
	// Set next record to 1
	nextRecordsCache.clear();
	nextRecordsCache.push_back(1);
	// Update backup file as well
	std::ofstream nextRecordStream(selLogDir / nextRecordFilename);
	nextRecordStream << '1' << '\n';
	}

	static bool selDeleteTargetRecord(const uint16_t& targetId)
	{
	bool targetEntryFound = false;
	// Check if the ipmi_sel exist and save the path
	std::vector<std::filesystem::path> selLogFiles;
	if (!getSELLogFiles(selLogFiles))
	{
	return targetEntryFound;
	}

	// Go over all the ipmi_sel files to remove the entry with the target ID
	for (const std::filesystem::path& file : selLogFiles)
	{
	std::fstream logStream(file, std::ios::in);
	std::fstream tempFile(selLogDir / "temp", std::ios::out);
	if (!logStream.is_open())
	{
	return targetEntryFound;
	}
	std::string line;
	while (std::getline(logStream, line))
	{
	// Get the recordId of the current entry
	int left = line.find(" ");
	int right = line.find(",");
	int recordLen = right - left;
	std::string recordId = line.substr(left, recordLen);
	int newRecordId = std::stoi(recordId);

	if (newRecordId != targetId)
	{
	// Copy the entry from the original ipmi_sel to the temp file
	tempFile << line << '\n';
	}
	else
	{
	// Skip copying the target entry
	targetEntryFound = true;
	}
	}
	logStream.close();
	tempFile.close();
	if (targetEntryFound)
	{
	std::fstream logStream(file, std::ios::out);
	std::fstream tempFile(selLogDir / "temp", std::ios::in);
	while (std::getline(tempFile, line))
	{
	logStream << line << '\n';
	}
	logStream.close();
	tempFile.close();
	std::error_code ec;
	if (!std::filesystem::remove(selLogDir / "temp", ec))
	{
	std::cerr << ec.message() << std::endl;
	}
	break;
	}
	}
	return targetEntryFound;
	}

	static void selDeleteRecord(const uint16_t& recordId)
	{
	std::filesystem::file_time_type prevAddTime =
	std::filesystem::last_write_time(selLogDir / selLogFilename);
	bool targetEntryFound = selDeleteTargetRecord(recordId);

	// Check if the Record Id was found
	if (!targetEntryFound)
	{
	throw sdbusplus::xyz::openbmc_project::Common::Error::
	ResourceNotFound();
	}
	// Add to next record cache for reuse
	nextRecordsCache.push_back(recordId);
	// Add to backup file
	std::ofstream nextRecordStream(selLogDir / nextRecordFilename,
	std::ios::app);
	nextRecordStream << recordId << '\n';
	// Keep Last Add Time the same
	std::filesystem::last_write_time(selLogDir / selLogFilename, prevAddTime);
	// Update Last Del Time
	saveClearSelTimestamp();
	}
	#else
	static unsigned int initializeRecordId()
	{
	std::vector<std::filesystem::path> selLogFiles;
	if (!getSELLogFiles(selLogFiles))
	{
	return 0;
	}
	std::ifstream logStream(selLogFiles.front());
	if (!logStream.is_open())
	{
	return 0;
	}
	std::string line;
	std::string newestEntry;
	while (std::getline(logStream, line))
	{
	newestEntry = line;
	}

	std::vector<std::string> newestEntryFields;
	boost::split(newestEntryFields, newestEntry, boost::is_any_of(" ,"),
	boost::token_compress_on);
	if (newestEntryFields.size() < 4)
	{
	return 0;
	}

	return std::stoul(newestEntryFields[1]);
	}

	static unsigned int recordId = initializeRecordId();

	static unsigned int getNewRecordId()
	{
	if (++recordId >= selInvalidRecID)
	{
	recordId = selInvalidRecID;
	}
	return recordId;
	}

	void clearSelLogFiles()
	{
	saveClearSelTimestamp();

	// Clear the SEL by deleting the log files
	std::vector<std::filesystem::path> selLogFiles;
	if (getSELLogFiles(selLogFiles))
	{
	for (const std::filesystem::path& file : selLogFiles)
	{
	std::error_code ec;
	std::filesystem::remove(file, ec);
	}
	}

	recordId = 0;

	// Reload rsyslog so it knows to start new log files
	boost::asio::io_context io;
	auto dbus = std::make_shared<sdbusplus::asio::connection>(io);
	sdbusplus::message_t rsyslogReload = dbus->new_method_call(
	"org.freedesktop.systemd1", "/org/freedesktop/systemd1",
	"org.freedesktop.systemd1.Manager", "ReloadUnit");
	rsyslogReload.append("rsyslog.service", "replace");
	try
	{
	sdbusplus::message_t reloadResponse = dbus->call(rsyslogReload);
	}
	catch (const sdbusplus::exception_t& e)
	{
	std::cerr << e.what() << "\n";
	}
	}
	#endif
	#endif

	static void toHexStr(const std::vector<uint8_t>& data, std::string& hexStr)
	{
	std::stringstream stream;
	stream << std::hex << std::uppercase << std::setfill('0');
	for (int v : data)
	{
	stream << std::setw(2) << v;
	}
	hexStr = stream.str();
	}

	template <typename... T>
	static uint16_t selAddSystemRecord(
	[[maybe_unused]] std::shared_ptr<sdbusplus::asio::connection> conn,
	[[maybe_unused]] const std::string& message, const std::string& path,
	const std::vector<uint8_t>& selData, const bool& assert,
	const uint16_t& genId, [[maybe_unused]] T&&... metadata)
	{
	// Only 3 bytes of SEL event data are allowed in a system record
	if (selData.size() > selEvtDataMaxSize)
	{
	throw std::invalid_argument("Event data too large");
	}
	std::string selDataStr;
	toHexStr(selData, selDataStr);

	#ifdef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
	sdbusplus::message_t AddToLog = conn->new_method_call(
	"xyz.openbmc_project.Logging", "/xyz/openbmc_project/logging",
	"xyz.openbmc_project.Logging.Create", "Create");

	std::string journalMsg(
	message + " from " + path + ": " +
	" RecordType=" + std::to_string(selSystemType) +
	", GeneratorID=" + std::to_string(genId) +
	", EventDir=" + std::to_string(assert) + ", EventData=" + selDataStr);

	AddToLog.append(
	journalMsg, "xyz.openbmc_project.Logging.Entry.Level.Informational",
	std::map<std::string, std::string>(
	{{"SENSOR_PATH", path},
	{"GENERATOR_ID", std::to_string(genId)},
	{"RECORD_TYPE", std::to_string(selSystemType)},
	{"EVENT_DIR", std::to_string(assert)},
	{"SENSOR_DATA", selDataStr}}));
	conn->call(AddToLog);
	return 0;
	#else
	unsigned int recordId = getNewRecordId();
	if (recordId < selInvalidRecID)
	{
	sd_journal_send(
	"MESSAGE=%s", message.c_str(), "PRIORITY=%i", selPriority,
	"MESSAGE_ID=%s", selMessageId, "IPMI_SEL_RECORD_ID=%d", recordId,
	"IPMI_SEL_RECORD_TYPE=%x", selSystemType,
	"IPMI_SEL_GENERATOR_ID=%x", genId, "IPMI_SEL_SENSOR_PATH=%s",
	path.c_str(), "IPMI_SEL_EVENT_DIR=%x", assert, "IPMI_SEL_DATA=%s",
	selDataStr.c_str(), std::forward<T>(metadata)..., NULL);
	}
	return recordId;
	#endif
	}

	static uint16_t selAddOemRecord(
	[[maybe_unused]] std::shared_ptr<sdbusplus::asio::connection> conn,
	[[maybe_unused]] const std::string& message,
	const std::vector<uint8_t>& selData, const uint8_t& recordType)
	{
	// A maximum of 13 bytes of SEL event data are allowed in an OEM record
	if (selData.size() > selOemDataMaxSize)
	{
	throw std::invalid_argument("Event data too large");
	}
	std::string selDataStr;
	toHexStr(selData, selDataStr);

	#ifdef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
	sdbusplus::message_t AddToLog = conn->new_method_call(
	"xyz.openbmc_project.Logging", "/xyz/openbmc_project/logging",
	"xyz.openbmc_project.Logging.Create", "Create");

	std::string journalMsg(
	message + ": " + " RecordType=" + std::to_string(recordType) +
	", GeneratorID=" + std::to_string(0) +
	", EventDir=" + std::to_string(0) + ", EventData=" + selDataStr);

	AddToLog.append(
	journalMsg, "xyz.openbmc_project.Logging.Entry.Level.Informational",
	std::map<std::string, std::string>(
	{{"SENSOR_PATH", ""},
	{"GENERATOR_ID", std::to_string(0)},
	{"RECORD_TYPE", std::to_string(recordType)},
	{"EVENT_DIR", std::to_string(0)},
	{"SENSOR_DATA", selDataStr}}));
	conn->call(AddToLog);
	return 0;
	#else
	unsigned int recordId = getNewRecordId();
	if (recordId < selInvalidRecID)
	{
	sd_journal_send("MESSAGE=%s", message.c_str(), "PRIORITY=%i",
	selPriority, "MESSAGE_ID=%s", selMessageId,
	"IPMI_SEL_RECORD_ID=%d", recordId,
	"IPMI_SEL_RECORD_TYPE=%x", recordType,
	"IPMI_SEL_DATA=%s", selDataStr.c_str(), NULL);
	}
	return recordId;
	#endif
	}

	int main(int, char*[])
	{
	#ifndef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
	#ifdef SEL_LOGGER_ENABLE_SEL_DELETE
	initializeRecordId();
	#endif
	#endif
	// setup connection to dbus
	boost::asio::io_context io;
	auto conn = std::make_shared<sdbusplus::asio::connection>(io);

	// IPMI SEL Object
	conn->request_name(ipmiSelObject);
	auto server = sdbusplus::asio::object_server(conn);

	// Add SEL Interface
	std::shared_ptr<sdbusplus::asio::dbus_interface> ifaceAddSel =
	server.add_interface(ipmiSelPath, ipmiSelAddInterface);

	// Add a new SEL entry
	ifaceAddSel->register_method(
	"IpmiSelAdd",
	[conn](const std::string& message, const std::string& path,
	const std::vector<uint8_t>& selData, const bool& assert,
	const uint16_t& genId) {
	return selAddSystemRecord(conn, message, path, selData, assert,
	genId);
	});
	// Add a new OEM SEL entry
	ifaceAddSel->register_method(
	"IpmiSelAddOem",
	[conn](const std::string& message, const std::vector<uint8_t>& selData,
	const uint8_t& recordType) {
	return selAddOemRecord(conn, message, selData, recordType);
	});

	#ifndef SEL_LOGGER_SEND_TO_LOGGING_SERVICE
	// Clear SEL entries
	ifaceAddSel->register_method("Clear", []() { clearSelLogFiles(); });
	#ifdef SEL_LOGGER_ENABLE_SEL_DELETE
	// Delete a SEL entry
	ifaceAddSel->register_method("SELDelete", [](const uint16_t& recordId) {
	return selDeleteRecord(recordId);
	});
	#endif
	#endif
	ifaceAddSel->initialize();

	#ifdef SEL_LOGGER_MONITOR_THRESHOLD_EVENTS
	sdbusplus::bus::match_t thresholdAssertMonitor =
	startThresholdAssertMonitor(conn);
	#endif

	#ifdef REDFISH_LOG_MONITOR_PULSE_EVENTS
	sdbusplus::bus::match_t pulseEventMonitor = startPulseEventMonitor(conn);
	#endif

	#ifdef SEL_LOGGER_MONITOR_WATCHDOG_EVENTS
	sdbusplus::bus::match_t watchdogEventMonitor =
	startWatchdogEventMonitor(conn);
	#endif

	#ifdef SEL_LOGGER_MONITOR_THRESHOLD_ALARM_EVENTS
	startThresholdAlarmMonitor(conn);
	#endif

	#ifdef SEL_LOGGER_MONITOR_HOST_ERROR_EVENTS
	startHostErrorEventMonitor(conn);
	#endif
	io.run();

	return 0;
	}