为Winston传输添加不同的格式化程序

Question

我需要为每个传输使用不同类型的格式化程序.

例

logger = new (winston.Logger)({
    transports: [
        new (winston.transports.LogstashUDP)({
            // some config here. Do noting on formatting
        }),
        new (winston.transports.Mail)({
            // do formatting one way
        }),
        new (winston.transports.File)({
            // write to file as json (maybe format it here)
        }),
        new (winston.transports.Console)({
            // do another formatting
        })
    ]
});

正如我从winston transports 文档中看到的那样,只有Console支持自定义格式化程序.

我正在使用winston-mailer模块邮件和winston-logstash-upd

有没有办法用Winston解决这个问题？或者也许如何围绕其中一个模块创建包装以支持格式化？

Answer 1

这是dandv 发布到 GitHub 的解决方案

const logger = winston.createLogger({
  transports: [
    new winston.transports.File({
      filename: 'error.log', level: 'error',
      format: winston.format.simple(),
    }),
    new winston.transports.File({
      filename: 'combined.log', level: 'debug',
      format: winston.format.printf(info => `${new Date().toISOString(), ${info.message}`),
    }),
  ],
});

logger.error('prefixed by the timestamp only in `combined.log`');