140 lines
3.7 KiB
C++
140 lines
3.7 KiB
C++
/*
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* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license: https://github.com/azerothcore/azerothcore-wotlk/blob/master/LICENSE-AGPL3
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* Copyright (C) 2008-2021 TrinityCore <http://www.trinitycore.org/>
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*/
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#include "AppenderFile.h"
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#include "Log.h"
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#include "LogMessage.h"
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#include "StringConvert.h"
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#include "Util.h"
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#include <algorithm>
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AppenderFile::AppenderFile(uint8 id, std::string const& name, LogLevel level, AppenderFlags flags, std::vector<std::string_view> const& args) :
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Appender(id, name, level, flags),
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logfile(nullptr),
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_logDir(sLog->GetLogsDir()),
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_maxFileSize(0),
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_fileSize(0)
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{
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if (args.size() < 4)
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{
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throw InvalidAppenderArgsException(Acore::StringFormat("Log::CreateAppenderFromConfig: Missing file name for appender %s", name.c_str()));
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}
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_fileName.assign(args[3]);
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std::string mode = "a";
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if (4 < args.size())
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{
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mode.assign(args[4]);
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}
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if (flags & APPENDER_FLAGS_USE_TIMESTAMP)
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{
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size_t dot_pos = _fileName.find_last_of('.');
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if (dot_pos != std::string::npos)
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{
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_fileName.insert(dot_pos, sLog->GetLogsTimestamp());
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}
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else
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{
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_fileName += sLog->GetLogsTimestamp();
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}
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}
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if (5 < args.size())
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{
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if (Optional<uint32> size = Acore::StringTo<uint32>(args[5]))
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{
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_maxFileSize = *size;
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}
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else
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{
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throw InvalidAppenderArgsException(Acore::StringFormat("Log::CreateAppenderFromConfig: Invalid size '%s' for appender %s", std::string(args[5]).c_str(), name.c_str()));
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}
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}
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_dynamicName = std::string::npos != _fileName.find("%s");
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_backup = (flags & APPENDER_FLAGS_MAKE_FILE_BACKUP) != 0;
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if (!_dynamicName)
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{
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logfile = OpenFile(_fileName, mode, (mode == "w") && _backup);
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}
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}
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AppenderFile::~AppenderFile()
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{
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CloseFile();
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}
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void AppenderFile::_write(LogMessage const* message)
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{
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bool exceedMaxSize = _maxFileSize > 0 && (_fileSize.load() + message->Size()) > _maxFileSize;
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if (_dynamicName)
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{
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char namebuf[ACORE_PATH_MAX];
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snprintf(namebuf, ACORE_PATH_MAX, _fileName.c_str(), message->param1.c_str());
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// always use "a" with dynamic name otherwise it could delete the log we wrote in last _write() call
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FILE* file = OpenFile(namebuf, "a", _backup || exceedMaxSize);
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if (!file)
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{
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return;
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}
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fprintf(file, "%s%s\n", message->prefix.c_str(), message->text.c_str());
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fflush(file);
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_fileSize += uint64(message->Size());
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fclose(file);
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return;
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}
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else if (exceedMaxSize)
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{
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logfile = OpenFile(_fileName, "w", true);
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}
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if (!logfile)
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{
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return;
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}
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fprintf(logfile, "%s%s\n", message->prefix.c_str(), message->text.c_str());
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fflush(logfile);
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_fileSize += uint64(message->Size());
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}
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FILE* AppenderFile::OpenFile(std::string const& filename, std::string const& mode, bool backup)
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{
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std::string fullName(_logDir + filename);
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if (backup)
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{
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CloseFile();
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std::string newName(fullName);
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newName.push_back('.');
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newName.append(LogMessage::getTimeStr(time(nullptr)));
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std::replace(newName.begin(), newName.end(), ':', '-');
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rename(fullName.c_str(), newName.c_str()); // no error handling... if we couldn't make a backup, just ignore
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}
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if (FILE* ret = fopen(fullName.c_str(), mode.c_str()))
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{
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_fileSize = ftell(ret);
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return ret;
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}
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return nullptr;
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}
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void AppenderFile::CloseFile()
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{
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if (logfile)
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{
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fclose(logfile);
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logfile = nullptr;
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}
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}
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