mirror of https://gitee.com/bigwinds/arangodb
132 lines
4.0 KiB
C++
132 lines
4.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_LOGGER_LOG_APPENDER_FILE_H
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#define ARANGODB_LOGGER_LOG_APPENDER_FILE_H 1
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#include "Logger/LogAppender.h"
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namespace arangodb {
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class LogAppenderStream : public LogAppender {
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public:
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LogAppenderStream(std::string const& filename, std::string const& filter, int fd);
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~LogAppenderStream() {}
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void logMessage(LogLevel, std::string const& message, size_t offset) override final;
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virtual std::string details() override = 0;
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int fd() const { return _fd; }
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protected:
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void updateFd(int fd) { _fd = fd; }
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// determine the required length of the output buffer for the log message
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size_t determineOutputBufferSize(std::string const& message) const;
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// write the log message into the already allocated output buffer
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size_t writeIntoOutputBuffer(std::string const& message);
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virtual void writeLogMessage(LogLevel, char const*, size_t) = 0;
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/// @brief maximum size for reusable log buffer
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/// if the buffer exceeds this size, it will be freed after the log
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/// message was produced. otherwise it will be kept for recycling
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static constexpr size_t maxBufferSize = 64 * 1024;
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private:
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/// @brief a reusable buffer for log messages
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std::unique_ptr<char[]> _buffer;
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/// @brief allocation size of the buffer
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size_t _bufferSize;
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protected:
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/// @brief file descriptor
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int _fd;
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/// @brief whether or not we should use colors
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bool _useColors;
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/// @brief whether or not to escape special chars in log output
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bool const _escape;
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};
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class LogAppenderFile : public LogAppenderStream {
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public:
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LogAppenderFile(std::string const& filename, std::string const& filter);
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void writeLogMessage(LogLevel, char const*, size_t) override final;
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std::string details() override final;
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public:
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static void reopenAll();
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static void closeAll();
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static std::vector<std::tuple<int, std::string, LogAppenderFile*>> getFds() {
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return _fds;
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}
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static void setFds(std::vector<std::tuple<int, std::string, LogAppenderFile*>> const& fds) {
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_fds = fds;
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}
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static void clear();
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static void setFileMode(int mode) { _fileMode = mode; }
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static void setFileGroup(int group) { _fileGroup = group; }
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private:
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static std::vector<std::tuple<int, std::string, LogAppenderFile*>> _fds;
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static int _fileMode;
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static int _fileGroup;
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std::string _filename;
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};
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class LogAppenderStdStream : public LogAppenderStream {
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public:
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LogAppenderStdStream(std::string const& filename, std::string const& filter, int fd);
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~LogAppenderStdStream();
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std::string details() override final { return std::string(); }
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static void writeLogMessage(int fd, bool useColors, LogLevel, char const* p,
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size_t length, bool appendNewline);
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private:
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void writeLogMessage(LogLevel, char const*, size_t) override final;
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};
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class LogAppenderStderr final : public LogAppenderStdStream {
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public:
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explicit LogAppenderStderr(std::string const& filter);
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};
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class LogAppenderStdout final : public LogAppenderStdStream {
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public:
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explicit LogAppenderStdout(std::string const& filter);
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};
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} // namespace arangodb
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#endif
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