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({
  13       filename: Utils.insertAt(
  14         Configuration.getLogErrorFile(),
  15         '-%DATE%',
  16         Configuration.getLogErrorFile().indexOf('.log')
  17       ),
  18       level: 'error',
  19       maxFiles: logMaxFiles,
  20     }),
  21     new DailyRotateFile({
  22       filename: Utils.insertAt(
  23         Configuration.getLogFile(),
  24         '-%DATE%',
  25         Configuration.getLogFile().indexOf('.log')
  26       ),
  27       maxFiles: logMaxFiles,
  28     }),
  29   ];
  30 } else {
  31   transports = [
  32     new File({ filename: Configuration.getLogErrorFile(), level: 'error' }),
  33     new File({ filename: Configuration.getLogFile() }),
  34   ];
  35 }
  36
  37 const logger: Logger = createLogger({
  38   level: Configuration.getLogLevel(),
  39   format: format.combine(format.splat(), format[Configuration.getLogFormat()]()),
  40   transports: transports,
  41 });
  42
  43 //
  44 // If enabled, log to the `console` with the format:
  45 // `${info.level}: ${info.message} JSON.stringify({ ...rest }) `
  46 //
  47 if (Configuration.getLogConsole()) {
  48   logger.add(
  49     new Console({
  50       format: format.combine(format.splat(), format[Configuration.getLogFormat()]()),
  51     })
  52   );
  53 }
  54
  55 export default logger;