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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 31x 31x 31x 31x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 15x 15x 1x 1x 1x | import console from "node:console";
// https://betterstack.com/docs/logs/javascript/winston/
import winston from "winston";
import {Logtail} from "@logtail/node";
import {LogtailTransport} from "@logtail/winston";
import {isSet} from "../lib/Common.js"; // https://betterstack.com/docs/logs/javascript/winston/
export default class LoggerService {
constructor(config) {
this.config = config;
this.buildLogtail();// https://logs.betterstack.com/ (ex. logtail) service
this.buildLogger();// https://github.com/winstonjs/winston logger that could embed logtail transport
}
buildLogtail() {
this.logtail = null;
// Create a Logtail client
let sourceToken = this.config?.log?.logtailToken;
if (isSet(sourceToken)) {
this.logtail = new Logtail(sourceToken);
}
}
buildLogger() {
const format = winston.format;
winston.addColors({
info: 'white',
error: 'red',
warn: 'yellow',
debug: 'cyan'
});
// https://stackoverflow.com/questions/10271373/node-js-how-to-add-timestamp-to-logs-using-winston-library
// Limitations: if you colorize all: true or level: true then the padEnd on level is not applied. If you use format.align, this align only the message start part..
const consoleTransport = new winston.transports.Console({
"format": format.combine(
format.colorize({message: true}),
format.timestamp({
format: 'DD-MM-YYYY HH:mm:ss.SSS'
}),
format.printf(info => {
const labelInfo = isSet(info.label) ? ` 🧾️${info.label} -` : "";// logger name from class init
const userInfo = isSet(info.remoteAddress) ? ` 👤 ${info.remoteAddress}` : "";// for api call : remote address
const pluginInfo = isSet(info.pluginName) ? ` 🖥️ ${info.pluginName} ` : "";// for plugin business : plugin name
return `${info.timestamp} [${info.level.padEnd(5)}]${labelInfo}${pluginInfo}${userInfo} ${info.message}`;
})
)
});
let isDebugLevelActivated = process.env["BES_DEBUG"] === "true";
if (isDebugLevelActivated) {
consoleTransport.level = 'debug';
}
if (isSet(this.logtail)) { // https://logs.betterstack.com
const transports = [new LogtailTransport(this.logtail), consoleTransport];
this._winstonLogger = winston.createLogger({transports});
console.log(` ☑ winston logtail logger${isDebugLevelActivated ? " with console in debug level" : ""}`);
} else {
const transports = [consoleTransport];
this._winstonLogger = winston.createLogger({transports});
console.log(` ☑ winston console logger${isDebugLevelActivated ? " with console in debug level" : ""}`);
}
}
/**
* to use in service/class init to bootstrap a logger
* doc: https://github.com/winstonjs/winston?tab=readme-ov-file#creating-child-loggers
* example: this.logger = loggerService.getLogger().child({ label: 'ExpressServer' });
* @returns {winston.Logger | *}
*/
getLogger() {
return this._winstonLogger;
}
flush() {
if (this.logtail === null) {
return Promise.resolve;
}
return this.logtail.flush();
}
} |