forked from episodes-platform/shared-snippets
feature/ISEPOS-2280-mechanizm-raportowania-informacji-z-aplikacji-do-pliku-z-logami #1
131
matlab/logging/base_logger.m
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131
matlab/logging/base_logger.m
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%
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% -----------------
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% Copyright © 2024 ACK Cyfronet AGH, Poland.
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% -----------------
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%
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% BASE_LOGGER A singleton logger class for logging messages to a file.
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%
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% This class implements a simple logging mechanism with different log levels
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% (TRACE, DEBUG, INFO, WARNING, ERROR) and writes log entries to a file.
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% It follows the Singleton pattern to ensure that only one instance of the logger
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% exists throughout the application.
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%
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% Properties:
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% fid - (private) The file identifier for the log file. This is used to write logs.
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%
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% Methods:
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%
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% getInstance() - Retrieves the singleton instance of the logger.
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%
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% trace(message) - Logs a message with TRACE level.
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% @param message The message to log.
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%
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% debug(message) - Logs a message with DEBUG level.
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% @param message The message to log.
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%
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% info(message) - Logs a message with INFO level.
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% @param message The message to log.
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%
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% warning(message) - Logs a message with WARNING level.
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% @param message The message to log.
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%
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% error(message) - Logs a message with ERROR level.
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% @param message The message to log.
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%
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% delete() - Destructor method that closes the file identifier when the logger is deleted.
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%
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% Example Usage:
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% logger = base_logger.getInstance();
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% logger.info('Some info')
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%
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% try
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% % some code causing exception
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% catch err
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% logger.error('An error occurred:', err);
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% end
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%
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% See also: fopen, fclose, dbstack, fprintf
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classdef base_logger < handle
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properties(Access=private)
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fid;
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end
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methods(Static, Access = public)
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function obj = getInstance()
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persistent instance;
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if isempty(instance)
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instance = base_logger();
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end
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obj = instance;
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end
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end
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methods(Access=private)
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function this = base_logger()
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this.fid = fopen(getenv("APP_LOG_FILE"), 'a');
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if this.fid == -1
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error('Failed to open log file');
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end
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end
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function log(this, level, varargin)
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current_time = datestr(now, 'yyyy-mm-dd HH:MM:SS');
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stack = dbstack('-completenames');
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if length(stack) > 2
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script_name = stack(3).name;
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else
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script_name = 'Unknown';
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end
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message = "";
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for i = 1:numel(varargin)
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if isa(varargin{i}, 'MException')
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message = sprintf('%sError: %s\n', message, varargin{i}.message);
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for j = 1:length(varargin{i}.stack)
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message = sprintf('%s at %s (line %d)\n', message, varargin{i}.stack(j).name, varargin{i}.stack(j).line);
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end
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elseif isnumeric(varargin{i}) || isenum(varargin{i}) || islogical(varargin{i})
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message = strcat(message, string(varargin{i}));
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elseif ischar(varargin{i}) || isstring(varargin{i})
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message = strcat(message, varargin{i});
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else
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message = strcat(message, 'Unsupported data type');
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end
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if i < numel(varargin)
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message = strcat(message, ", ");
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end
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end
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fprintf(this.fid, '%s %s %s %s\n', current_time, level, script_name, message);
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end
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end
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methods(Access=public)
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function trace(this, varargin)
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this.log('TRACE', varargin{:});
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end
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function debug(this, varargin)
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this.log('DEBUG', varargin{:});
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end
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function info(this, varargin)
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this.log('INFO', varargin{:});
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end
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function warning(this, varargin)
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this.log('WARNING', varargin{:});
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end
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function error(this, varargin)
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this.log('ERROR', varargin{:});
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end
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function delete(this)
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if this.fid ~= -1
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fclose(this.fid);
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end
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end
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end
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end
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130
octave/logging/base_logger.m
Normal file
130
octave/logging/base_logger.m
Normal file
@@ -0,0 +1,130 @@
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%
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% -----------------
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||||
% Copyright © 2024 ACK Cyfronet AGH, Poland.
|
||||
% -----------------
|
||||
%
|
||||
% BASE_LOGGER A singleton logger class for logging messages to a file.
|
||||
%
|
||||
% This class implements a simple logging mechanism with different log levels
|
||||
% (TRACE, DEBUG, INFO, WARNING, ERROR) and writes log entries to a file.
|
||||
% It follows the Singleton pattern to ensure that only one instance of the logger
|
||||
% exists throughout the application.
|
||||
%
|
||||
% Properties:
|
||||
% fid - (private) The file identifier for the log file. This is used to write logs.
|
||||
%
|
||||
% Methods:
|
||||
%
|
||||
% getInstance() - Retrieves the singleton instance of the logger.
|
||||
%
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% trace(message) - Logs a message with TRACE level.
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% @param message The message to log.
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%
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% debug(message) - Logs a message with DEBUG level.
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% @param message The message to log.
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%
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% info(message) - Logs a message with INFO level.
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% @param message The message to log.
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%
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% warning(message) - Logs a message with WARNING level.
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% @param message The message to log.
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%
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% error(message) - Logs a message with ERROR level.
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% @param message The message to log.
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%
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% delete() - Destructor method that closes the file identifier when the logger is deleted.
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%
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% Example Usage:
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% logger = base_logger.getInstance();
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% logger.info('Some info')
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%
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% try
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% % some code causing exception
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% catch err
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% logger.error('An error occurred:', err);
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% end
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%
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% See also: fopen, fclose, dbstack, fprintf
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classdef base_logger < handle
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properties
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fid;
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end
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methods(Static)
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function obj = getInstance()
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persistent instance;
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if isempty(instance)
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instance = base_logger();
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end
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obj = instance;
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end
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end
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methods
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function this = base_logger()
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this.fid = fopen(getenv("APP_LOG_FILE"), 'a');
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if this.fid == -1
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error('Failed to open log file');
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end
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end
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function log(this, level, varargin)
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current_time = strftime('%Y-%m-%d %H:%M:%S', localtime(time()));
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stack = dbstack('-completenames');
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if length(stack) > 2
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script_name = stack(3).name;
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else
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script_name = 'Unknown';
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end
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message = sprintf('');
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for i = 1:numel(varargin)
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if isstruct(varargin{i}) && isfield(varargin{i}, 'message') && isfield(varargin{i}, 'stack')
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error_info = varargin{i};
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message = sprintf('%sError: %s\n', message, error_info.message);
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for j = 1:length(error_info.stack)
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message = sprintf('%s at %s (line %d)\n', message, error_info.stack(j).name, error_info.stack(j).line);
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end
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elseif isnumeric(varargin{i}) || islogical(varargin{i})
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message = sprintf('%s%s', message, num2str(varargin{i}));
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elseif ischar(varargin{i}) || isstring(varargin{i})
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message = sprintf('%s%s', message, varargin{i});
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else
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message = sprintf('%sUnsupported data type', message);
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end
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if i < numel(varargin)
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message = sprintf('%s, ', message);
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end
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end
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fprintf(this.fid, '%s %s %s %s\n', current_time, level, script_name, message);
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end
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function trace(this, varargin)
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this.log('TRACE', varargin{:});
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end
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function debug(this, varargin)
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this.log('DEBUG', varargin{:});
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end
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function info(this, varargin)
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this.log('INFO', varargin{:});
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end
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function warning(this, varargin)
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this.log('WARNING', varargin{:});
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end
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function error(this, varargin)
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this.log('ERROR', varargin{:});
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end
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function delete(this)
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if this.fid ~= -1
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fclose(this.fid);
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end
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end
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end
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end
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59
python/logging/base_logger.py
Normal file
59
python/logging/base_logger.py
Normal file
@@ -0,0 +1,59 @@
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#
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# -----------------
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# Copyright © 2024 ACK Cyfronet AGH, Poland.
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# -----------------
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#
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import os
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import logging
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def getDefaultLogger(name):
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"""
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Retrieves or creates a logger with the specified name and sets it up with a file handler.
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The logger is configured to write log messages to the file path specified by the
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'DEFAULT_LOG_PATH' environment variable. It uses the 'INFO' level as the default
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logging level and writes log entries in the following format:
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'YYYY-MM-DD HH:MM:SS,ms LEVEL logger_name message'
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If the logger does not already have handlers, a file handler is created, and the
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logging output is appended to the file. The log format includes the timestamp with
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milliseconds, log level, logger name, and the log message.
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Parameters:
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-----------
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name : str
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The name of the logger. This can be the name of the module or any identifier
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that you want to associate with the logger.
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Returns:
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--------
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logger : logging.Logger
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A logger instance with the specified name. The logger is configured with a
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file handler that writes to the file specified by the 'DEFAULT_LOG_PATH'
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environment variable.
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Raises:
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-------
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KeyError:
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If the 'DEFAULT_LOG_PATH' environment variable is not set.
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Example:
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--------
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logger = getDefaultLogger(__name__)
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logger.info("This is an info message.")
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try:
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# some code causing exception
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except Exception:
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logger.exception('An error occurred')
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"""
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logger = logging.getLogger(name)
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if not logger.hasHandlers():
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file_handler = logging.FileHandler(os.environ['APP_LOG_FILE'], mode='a')
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formatter = logging.Formatter('%(asctime)s,%(msecs)d %(levelname)s %(name)s %(message)s')
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file_handler.setFormatter(formatter)
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logger.addHandler(file_handler)
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logger.setLevel(logging.INFO)
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return logger
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