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 const logger: Logger = createLogger({
  23   level: Configuration.getLogLevel(),
  24   format: format.combine(format.splat(), format[Configuration.getLogFormat()]()),
  25   transports: transports,
  26 });
  27
  28 //
  29 // If enabled, log to the `console` with the format:
  30 // `${info.level}: ${info.message} JSON.stringify({ ...rest }) `
  31 //
  32 if (Configuration.getLogConsole()) {
  33   logger.add(new Console({
  34     format: format.combine(format.splat(), format[Configuration.getLogFormat()]()),
  35   }));
  36 }
  37
  38 export default logger;