winston 日志的按天压缩 切分

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/adley_app/article/details/88045230

const winston = require('winston');

const logger = winston.createLogger({
    level: 'info',
    format: winston.format.json(),
    defaultMeta: { ServerName: 'CGI' },
    transports: [
      new winston.transports.File({ filename: 'default.log', level: 'info' }),
      new winston.transports.File({ filename: 'error.log', level: 'error'})
    ]
  });
   
  if (!process.env.NODE_ENV || process.env.NODE_ENV === 'dev') {
    logger.add(new winston.transports.Console({
      format: winston.format.simple()
    }));
  }

  logger.info('jkdshfkjds')
  logger.error('jkdshfkjds')

var winston = require('winston');
require('winston-daily-rotate-file');
var process = require('child_process');

var transport = new (winston.transports.DailyRotateFile)({
    filename: 'CGI-%DATE%.log',
    datePattern: 'YYYY-MM-DD',
    zippedArchive: true,
    maxSize: '1k',
    maxFiles: '14d'
});

transport.on('rotate', function (oldFilename, newFilename) {
    // do something fun
    console.log(oldFilename, newFilename);

    log

    // if(){
    //     process.exec('mkdir ')
    // }

});

var logger = winston.createLogger({
    transports: [
        transport
    ]
});

for(let i=0; i< 100; i++){
    logger.info('Hello World!');
}

var str = 'CGI-2019-02-28.log';

var _arr = str.replace(/\.log/,'').split('-');
_arr.shift();
console.log(_arr.join('-'));