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logger.js
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logger.js
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"use strict";
const locreq = require("locreq")(__dirname);
const winston = require("winston");
const { getTimeDifference } = locreq("lib/utils/get-datetime.js");
/*
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
*/
const Logger = function(app) {
const transports_array = [];
const logger_level = app.ConfigManager.get("logger.level");
const logger_color = app.ConfigManager.get("logger.color");
const logger_file = app.ConfigManager.get("logger.file");
const logger_dirname = app.ConfigManager.get("logger.dirname");
const logger_to_json = app.ConfigManager.get("logger.to_json");
const logger_rotation = app.ConfigManager.get("logger.rotation");
const winston_level = new winston.transports.Console({
level: logger_level,
colorize: logger_color,
timestamp: () => getTimeDifference(app.launch_time, Date.now()),
});
transports_array.push(winston_level);
if (logger_file) {
const winston_save_to_file = new winston.transports.File({
filename: logger_file,
colorize: logger_color,
timestamp: () => getTimeDifference(app.launch_time, Date.now()),
dirname: logger_dirname,
json: logger_to_json,
});
const 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);
}
const logger = new winston.Logger({
levels: Logger.custom.levels,
colors: Logger.custom.colors,
transports: transports_array,
});
logger.rewriters.push(function(level, msg, meta) {
let ret = "";
if (Object.keys(meta).length) {
let message = "\n";
for (const prop in meta) {
message += ` - ${prop}: ${JSON.stringify(meta[prop])}\n`;
}
ret = message;
}
if (meta instanceof Error) {
ret += meta.stack;
}
return ret;
});
return logger;
};
Logger.custom = {
levels: {
lazyseal: 0,
debug: 1,
info: 2,
warning: 3,
error: 4,
no_output: 5,
},
colors: {
lazyseal: "white",
debug: "blue",
info: "green",
warning: "yellow",
error: "red",
},
};
module.exports = Logger;

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