1a2311e350
Previously logging logic was scattered over OS class implementations with plenty of duplication. Major changes in this commit: - Extracted logging logic into a separate Logger hierarchy. It allows easy configuration of logging mechanism depending on compile-time or run-time configuration. - Implemented RotatedFileLogger which is usually used with StdLogger, providing persistency of logs. It is often important to be able to obtain logs of the game even in production to be able to understand what happened prior to some problem. On mobile there previously was no way to obtain the logs aside from having the device connected to your machine. - flush() is not performed in release mode for every logged line. It is only performed for errors.
107 lines
4 KiB
C++
107 lines
4 KiB
C++
/*************************************************************************/
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/* logger.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef LOGGER_H
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#define LOGGER_H
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#include "os/file_access.h"
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#include "ustring.h"
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#include "vector.h"
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#include <stdarg.h>
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class Logger {
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protected:
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bool should_log(bool p_err);
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public:
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enum ErrorType {
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ERR_ERROR,
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ERR_WARNING,
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ERR_SCRIPT,
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ERR_SHADER
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};
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virtual void logv(const char *p_format, va_list p_list, bool p_err) = 0;
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virtual void log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type = ERR_ERROR);
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void logf(const char *p_format, ...);
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void logf_error(const char *p_format, ...);
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virtual ~Logger();
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};
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/**
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* Writes messages to stdout/stderr.
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*/
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class StdLogger : public Logger {
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public:
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virtual void logv(const char *p_format, va_list p_list, bool p_err);
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virtual ~StdLogger();
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};
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/**
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* Writes messages to the specified file. If the file already exists, creates a copy (backup)
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* of it with timestamp appended to the file name. Maximum number of backups is configurable.
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* When maximum is reached, the oldest backups are erased. With the maximum being equal to 1,
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* it acts as a simple file logger.
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*/
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class RotatedFileLogger : public Logger {
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String base_path;
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int max_files;
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FileAccess *file;
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void rotate_file_without_closing();
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void close_file();
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void clear_old_backups();
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void rotate_file();
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public:
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RotatedFileLogger(const String &p_base_path, int p_max_files = 10);
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virtual void logv(const char *p_format, va_list p_list, bool p_err);
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virtual ~RotatedFileLogger();
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};
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class CompositeLogger : public Logger {
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Vector<Logger *> loggers;
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public:
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CompositeLogger(Vector<Logger *> p_loggers);
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virtual void logv(const char *p_format, va_list p_list, bool p_err);
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virtual void log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type = ERR_ERROR);
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virtual ~CompositeLogger();
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};
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#endif |