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logger.js
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logger.js
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var winston = require('winston');
var ConfigManager = require("../config/config-manager.js");
/*
This is the default configration of Sealious logger.
To retrieve a specifig setting, use "get_config()" function, ex. "ConfigManager.get_config().logger_config.logger_level".
@logger_level - specifies from which log level (displayed below) onward should be displayed,
@logger_color - specifies if the log should be colorized, values "true" or "false"
@logger_file - defines a filename to save the logs, if a falsy value is given the logs will not be saved,
@logger_dirname - defines a default path to save the logs,
@logger_to_json - specifies the format of the saved logs,
@logger_rotation - defines the log rotation format, set to daily by default
*/
ConfigManager.set_default_config(
"logger_config",
{
logger_level : "info",
logger_color : true,
logger_file : null,
logger_dirname: ".",
logger_to_json: false,
logger_rotation: '.yyyy-MM-Tdd'
});
/*
This is the custom logger level and color configuration.
@levels - default logger levels, 0 being the lowest importance, 4 being the highest:
* lazyseal - an Easter, or should we say: Sealious egg. Used only for humorous reasons, the lowest level of importance, default color: white,
* info - used for stating the current status or general information such as starting the server, default color: green,
* debug - used for debugging, default color: blue,
* warning - used to display warnings, default color: yellow,
* error - used to display errors, default color: red
*/
var custom = {
levels: {
lazyseal: 0,
info: 1,
debug: 2,
warning: 3,
error: 4
},
colors: {
lazyseal: "white",
info: "green",
debug: 'blue',
warning: 'yellow',
error: 'red'
}
};
/*
Returns the current date and time, default format: "yyyy-mm-dd hh:mm:ss.mmm", ex. "2000-01-01 20:00:00.000"
*/
function getDateTime() {
var date = new Date();
var hour = date.getHours();
hour = (hour < 10 ? "0" : "") + hour;
var min = date.getMinutes();
min = (min < 10 ? "0" : "") + min;
var sec = date.getSeconds();
sec = (sec < 10 ? "0" : "") + sec;
var milli = date.getMilliseconds();
milli = (milli < 10 ? "00" : "") + milli;
milli = (milli < 100 && milli >=10 ? "0" : "") + milli;
var year = date.getFullYear();
var month = date.getMonth() + 1;
month = (month < 10 ? "0" : "") + month;
var day = date.getDate();
day = (day < 10 ? "0" : "") + day;
return year + "-" + month + "-" + day + " " + hour + ":" + min + ":" + sec + "." + milli;
}
var transports_array = new Array();
var logger_level = ConfigManager.get_config().logger_config.logger_level;
var logger_color = ConfigManager.get_config().logger_config.logger_color;
var logger_file = ConfigManager.get_config().logger_config.logger_file;
var logger_dirname = ConfigManager.get_config().logger_config.logger_dirname;
var logger_to_json = ConfigManager.get_config().logger_config.logger_to_json;
var logger_rotation = ConfigManager.get_config().logger_config.logger_rotation;
var winston_level = new (winston.transports.Console)({ level: logger_level, colorize: logger_color, timestamp: function() { return getDateTime(); } });
transports_array.push(winston_level);
if (logger_file) {
var winston_save_to_file = new (winston.transports.File)({ filename: logger_file, colorize: logger_color, timestamp: function() { return getDateTime(); }, dirname: logger_dirname, json: logger_to_json });
var winston_daily_rotate = new (winston.transports.DailyRotateFile)( { filename : logger_file, datePattern: logger_rotation });
transports_array.push(winston_save_to_file);
transports_array.push(winston_daily_rotate);
}
var logger = new (winston.Logger)(
{
levels: custom.levels,
colors: custom.colors,
transports: transports_array
}
);
module.exports = logger;

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