src/utils/Logger.ts

   1 import { Console, File } from 'winston/lib/winston/transports';
   2 import { Logger, createLogger, format, transport } from 'winston';
   3
   4 import Configuration from './Configuration';
   5 import DailyRotateFile from 'winston-daily-rotate-file';
   6 import Utils from './Utils';
   7
   8 let transports: transport[];
   9 if (Configuration.getLogRotate()) {
  10   const logMaxFiles = Configuration.getLogMaxFiles();
  11   transports = [
  12     new DailyRotateFile({ filename: Utils.insertAt(Configuration.getLogErrorFile(), '-%DATE%', Configuration.getLogErrorFile().indexOf('.log')), level: 'error', maxFiles: logMaxFiles }),
  13     new DailyRotateFile({ filename: Utils.insertAt(Configuration.getLogFile(), '-%DATE%', Configuration.getLogFile().indexOf('.log')), maxFiles: logMaxFiles }),
  14   ];
  15 } else {
  16   transports = [
  17     new File({ filename: Configuration.getLogErrorFile(), level: 'error' }),
  18     new File({ filename: Configuration.getLogFile() }),
  19   ];
  20 }
  21
  22 let loggerInstance: Logger | null = null;
  23 const getLogger = () => {
  24   if (!loggerInstance) {
  25     loggerInstance = createLogger({
  26       level: Configuration.getLogLevel(),
  27       format: format.combine(format.splat(), format[Configuration.getLogFormat()]()),
  28       transports: transports,
  29     });
  30     return loggerInstance;
  31   }
  32 };
  33
  34 //
  35 // If enabled, log to the `console` with the format:
  36 // `${info.level}: ${info.message} JSON.stringify({ ...rest }) `
  37 //
  38 if (Configuration.getLogConsole()) {
  39   getLogger().add(new Console({
  40     format: format.combine(format.splat(), format[Configuration.getLogFormat()]()),
  41   }));
  42 }
  43
  44 export default getLogger;