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arangodb/lib/Logger/LogAppenderFile.h

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGODB_LOGGER_LOG_APPENDER_FILE_H
#define ARANGODB_LOGGER_LOG_APPENDER_FILE_H 1
#include "Logger/LogAppender.h"
namespace arangodb {
class LogAppenderFile : public LogAppender {
public:
static void reopen();
static void close();
public:
LogAppenderFile(std::string const& filename, std::string const& filter);
~LogAppenderFile();
bool logMessage(LogLevel, std::string const& message,
size_t offset) override final;
std::string details() override final;
private:
void writeLogFile(LogLevel, int, char const*, ssize_t);
private:
static std::vector<std::pair<int, std::string>> _fds;
private:
ssize_t _pos;
/// @brief a reusable buffer for log messages
std::unique_ptr<char[]> _buffer;
/// @brief allocation size of the buffer
size_t _bufferSize;
};
}
#endif