autotier
Automatic Tiering Fuse Filesystem
alert.hpp
1 /*
2  * Copyright (C) 2019-2021 Joshua Boudreau <jboudreau@45drives.com>
3  *
4  * This file is part of autotier.
5  *
6  * autotier is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * autotier is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with autotier. If not, see <https://www.gnu.org/licenses/>.
18  */
19 
20 #pragma once
21 
22 #include <string>
23 
28 class Logger {
29 public:
34  enum output_t {
35  STD,
36  SYSLOG
37  };
38  enum log_level_t { NONE, NORMAL, DEBUG };
45  explicit Logger(log_level_t log_level, output_t output = STD);
51  ~Logger(void);
59  void message(const std::string &msg, log_level_t lvl) const;
66  void warning(const std::string &msg) const;
73  void error(const std::string &msg) const;
79  void set_level(log_level_t log_level);
87  void set_output(output_t output);
96  std::string format_bytes(uintmax_t bytes) const;
107  double format_bytes(uintmax_t bytes, std::string &unit) const;
108 private:
115  log_level_t log_level_;
116  output_t output_;
117 };
118 
123 namespace Logging {
129  extern Logger log;
130 } // namespace Logging
Logging
Namespace for containing a global instance of a Logger object.
Definition: alert.cpp:31
Logger::output_t
output_t
Whether to print to stdout/stderr or the syslog.
Definition: alert.hpp:34
Logger::~Logger
~Logger(void)
Destroy the Logger object Close syslog if output_ == SYSLOG.
Definition: alert.cpp:43
Logger::Logger
Logger(log_level_t log_level, output_t output=STD)
Construct a new Logger object.
Definition: alert.cpp:35
Logger::message
void message(const std::string &msg, log_level_t lvl) const
Print message if lvl >= log_level_. Use this for regular informational log messages.
Definition: alert.cpp:48
Logger::format_bytes
std::string format_bytes(uintmax_t bytes) const
Return bytes as string in base-1024 SI units. Deprecated in favour of ffd::Bytes::get_str() from lib4...
Definition: alert.cpp:101
Logging::log
Logger log(Logger::log_level_t::NORMAL)
Global Logger object. Use Logging::log.<method> in source files including this header.
Definition: alert.hpp:129
Logger::output_
output_t output_
Whether to output to stdout (STD) or syslog (SYSLOG)
Definition: alert.hpp:116
Logger
Class to print logs to either stdout/stderr or the syslog.
Definition: alert.hpp:28
Logger::warning
void warning(const std::string &msg) const
Print message (to stderr if output_ == STD) prepended with "Warning: ". Use this for non-fatal errors...
Definition: alert.cpp:61
Logger::STD
@ STD
Print to stdout/stderr.
Definition: alert.hpp:35
Logger::log_level_
log_level_t log_level_
Value from config file. Each log message passes a log level to check against this number....
Definition: alert.hpp:115
Logger::set_output
void set_output(output_t output)
Set which type of logging to do. If switching from STD to SYSLOG, open the log. If switching from SYS...
Definition: alert.cpp:87
Logger::SYSLOG
@ SYSLOG
Print to syslog.
Definition: alert.hpp:36
Logger::error
void error(const std::string &msg) const
Print message (to stderr if output_ == STD) prepended with "Error: ". Use this for fatal errors.
Definition: alert.cpp:72
Logger::set_level
void set_level(log_level_t log_level)
Set the log_level_ member to log_level.
Definition: alert.cpp:83
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