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如何在Winstonjs logger中记录未处理的TimeoutError?

winston error-handling logging node.js javascript

kramer65 · 技术社区 · 6 年前

我有一个节点应用程序 Winstonjs

const myFormat = winston.format.printf(info => {
    return `${info.timestamp} ${info.level}: ${info.message}`;
});
const logger = winston.createLogger({
    level: "debug",
    format: winston.format.combine(winston.format.timestamp(), myFormat),  // winston.format.json(),
    transports: [
        new winston.transports.File({filename: "logs/error.log", level: 'error'}),
        new winston.transports.File({filename: 'logs/combined.log'}),
    ],
    exceptionHandlers: [
        new winston.transports.File({ filename: 'logs/exceptions.log' }),
        new winston.transports.File({ filename: 'logs/combined.log' })
    ],
    exitOnError: false
});

所以任何异常都应该记录在 logs/combined.log logs/exceptions.log .

当我运行我的程序时,我有时会在STDOUT中看到下面的错误,它来自 Sequelizejs 我用它来写MySQL数据库。

Unhandled rejection TimeoutError: ResourceRequest timed out
    at ResourceRequest._fireTimeout (/root/mmjs/node_modules/generic-pool/lib/ResourceRequest.js:62:17)
    at Timeout.bound (/root/mmjs/node_modules/generic-pool/lib/ResourceRequest.js:8:15)
    at ontimeout (timers.js:424:11)
    at tryOnTimeout (timers.js:288:5)
    at listOnTimeout (timers.js:251:5)
    at Timer.processTimers (timers.js:211:10)

这个错误只出现在stdout中(当手动运行我的程序时),而在 combined.log 或者 exceptions.log

(我想我可以 wrap my whole code in a try/catch

有谁能帮我记录下这些和类似的意外错误吗?

1 回复 | 直到 6 年前

Gillsoft AB 6 年前

这个过程是指节点 . 尝试在index.js中添加未处理的弹出检查,或使用 proper winston exception handling

"use strict";

const winston = require('winston');

const myFormat = winston.format.printf(info => {
    return `${info.timestamp} ${info.level}: ${info.message}`;
});
const logger = winston.createLogger({
    level: "debug",
    format: winston.format.combine(winston.format.timestamp(), myFormat),  // winston.format.json(),
    transports: [
        new winston.transports.File({filename: "logs/error.log", level: 'error'}),
        new winston.transports.File({filename: 'logs/combined.log'}),
    ],
    exceptionHandlers: [
        new winston.transports.File({ filename: 'logs/exceptions.log' }),
        new winston.transports.File({ filename: 'logs/combined.log' })
    ],
    exitOnError: false,
    // handleExceptions: true // Otherwise, you should use this in options.
});

process.on('unhandledRejection', (reason, promise) => {
    logger.debug(reason);
});

process.on('uncaughtException', (err) => {
    logger.debug(err);
});

但是,在package.json文件中查找index.js文件所在的目录。在“依赖关系”部分中查找节点池,并将其版本更改为“节点池”:“^3.4.2”,因为您描述的问题很可能已在3.1.8版本中修复。