javascript – winston.js信息方法不传递元数据
作者:互联网
当我通过winston传递元数据时,快捷方式winston.info方法不会传递元数据.
var winston = require('winston');
winston.info("winston with metadata", {cluster: "bar"});
winston.log("info", "winston with metadata", {cluster: "baz"});
OUTPUT:
info: winston with metadata
info: winston with metadata cluster=baz
我希望两个电话打印出元数据?
通过winston代码挖掘它看起来像动态生成每个级别的快捷函数(‘info’,’debug’,’error’),并尝试处理其他元数据参数:
//
// ### function setLevels (target, past, current)
// #### @target {Object} Object on which to set levels.
// #### @past {Object} Previous levels set on target.
// #### @current {Object} Current levels to set on target.
// Create functions on the target objects for each level
// in current.levels. If past is defined, remove functions
// for each of those levels.
//
exports.setLevels = function (target, past, current, isDefault) {
if (past) {
Object.keys(past).forEach(function (level) {
delete target[level];
});
}
target.levels = current || config.npm.levels;
if (target.padLevels) {
target.levelLength = exports.longestElement(Object.keys(target.levels));
}
//
// Define prototype methods for each log level
// e.g. target.log('info', msg) <=> target.info(msg)
//
Object.keys(target.levels).forEach(function (level) {
target[level] = function (msg) {
var args = Array.prototype.slice.call(arguments, 1),
callback = args.pop(),
ltype = typeof callback,
meta = args.length ? args : null;
if (ltype !== 'function') {
if (meta && ltype !== 'undefined') {
meta.push(callback);
}
callback = null;
}
if (meta) {
meta = (meta.length <= 1 && meta.shift()) || meta;
return callback
? target.log(level, msg, meta, callback)
: target.log(level, msg, meta)
}
return callback
? target.log(level, msg, callback)
: target.log(level, msg)
};
});
return target;
};
解决方法:
我认为这很可能是由于温斯顿v0.7.1的回归.
鉴于此输入:
var winston = require("winston");
var logger = new winston.Logger({
levels: {
debug: 0,
info: 1,
warn: 2,
error: 3
},
transports: [
new winston.transports.Console({
level: 'debug',
colorize: true
})
]
});
console.log('Winston Version: ' + winston.version);
console.log('\nProxy Methods\n');
logger.info("Hello world");
logger.warn("Hello world", { winston: {
version: winston.version
}});
console.log('\nDirect Access Methods\n')
logger.log('info', "Hello world");
logger.log('warn', "Hello world", { version: winston.version });
您将获得以下输出
Winston Version: 0.6.2
Proxy Methods
info: Hello world
warn: Hello world version=0.6.2
Direct Access Methods
info: Hello world
warn: Hello world version=0.6.2
与:
Winston Version: 0.7.1
Proxy Methods
info: Hello world
warn: Hello world
Direct Access Methods
info: Hello world
warn: Hello world version=0.7.1
在接受PR之前,我已经更新了https://github.com/flatiron/winston/pull/246以反映回归.
标签:javascript,node-js,logging,winston 来源: https://codeday.me/bug/20190629/1327489.html