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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "AppenderFile.h"
#include "Log.h"
#include "LogMessage.h"
#include "StringConvert.h"
#include "Util.h"
#include <algorithm>
AppenderFile::AppenderFile(uint8 id, std::string const& name, LogLevel level, AppenderFlags flags, std::vector<std::string_view> const& args) :
Appender(id, name, level, flags),
logfile(nullptr),
_logDir(sLog->GetLogsDir()),
_maxFileSize(0),
_fileSize(0)
{
if (args.size() < 4)
throw InvalidAppenderArgsException(Trinity::StringFormat("Log::CreateAppenderFromConfig: Missing file name for appender {}", name));
_fileName.assign(args[3]);
std::string mode = "a";
if (4 < args.size())
mode.assign(args[4]);
if (flags & APPENDER_FLAGS_USE_TIMESTAMP)
{
size_t dot_pos = _fileName.find_last_of('.');
if (dot_pos != std::string::npos)
_fileName.insert(dot_pos, sLog->GetLogsTimestamp());
else
_fileName += sLog->GetLogsTimestamp();
}
if (5 < args.size())
{
if (Optional<uint32> size = Trinity::StringTo<uint32>(args[5]))
_maxFileSize = *size;
else
throw InvalidAppenderArgsException(Trinity::StringFormat("Log::CreateAppenderFromConfig: Invalid size '{}' for appender {}", args[5], name));
}
_dynamicName = std::string::npos != _fileName.find("%s");
_backup = (flags & APPENDER_FLAGS_MAKE_FILE_BACKUP) != 0;
if (!_dynamicName)
logfile = OpenFile(_fileName, mode, (mode == "w") && _backup);
}
AppenderFile::~AppenderFile()
{
CloseFile();
}
void AppenderFile::_write(LogMessage const* message)
{
bool exceedMaxSize = _maxFileSize > 0 && (_fileSize.load() + message->Size()) > _maxFileSize;
if (_dynamicName)
{
char namebuf[TRINITY_PATH_MAX];
snprintf(namebuf, TRINITY_PATH_MAX, _fileName.c_str(), message->param1.c_str());
// always use "a" with dynamic name otherwise it could delete the log we wrote in last _write() call
FILE* file = OpenFile(namebuf, "a", _backup || exceedMaxSize);
if (!file)
return;
fprintf(file, "%s%s\n", message->prefix.c_str(), message->text.c_str());
fflush(file);
_fileSize += uint64(message->Size());
fclose(file);
return;
}
else if (exceedMaxSize)
logfile = OpenFile(_fileName, "w", true);
if (!logfile)
return;
fprintf(logfile, "%s%s\n", message->prefix.c_str(), message->text.c_str());
fflush(logfile);
_fileSize += uint64(message->Size());
}
FILE* AppenderFile::OpenFile(std::string const& filename, std::string const& mode, bool backup)
{
std::string fullName(_logDir + filename);
if (backup)
{
CloseFile();
std::string newName(fullName);
newName.push_back('.');
newName.append(LogMessage::getTimeStr(time(nullptr)));
std::replace(newName.begin(), newName.end(), ':', '-');
rename(fullName.c_str(), newName.c_str()); // no error handling... if we couldn't make a backup, just ignore
}
if (FILE* ret = fopen(fullName.c_str(), mode.c_str()))
{
_fileSize = ftell(ret);
return ret;
}
return nullptr;
}
void AppenderFile::CloseFile()
{
if (logfile)
{
fclose(logfile);
logfile = nullptr;
}
}
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