enigma-bbs/core/logger.js

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/* jslint node: true */
'use strict';
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// deps
const bunyan = require('bunyan');
const paths = require('path');
const fs = require('graceful-fs');
const _ = require('lodash');
module.exports = class Log {
static init() {
const Config = require('./config.js').config;
const logPath = Config.paths.logs;
const err = this.checkLogPath(logPath);
if(err) {
console.error(err.message); // eslint-disable-line no-console
return process.exit();
}
const logStreams = [];
if(_.isObject(Config.logging.rotatingFile)) {
Config.logging.rotatingFile.path = paths.join(logPath, Config.logging.rotatingFile.fileName);
logStreams.push(Config.logging.rotatingFile);
}
const serializers = {
err : bunyan.stdSerializers.err, // handle 'err' fields with stack/etc.
};
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// try to remove sensitive info by default, e.g. 'password' fields
[ 'formData', 'formValue' ].forEach(keyName => {
serializers[keyName] = (fd) => Log.hideSensitive(fd);
});
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this.log = bunyan.createLogger({
name : 'ENiGMA½ BBS',
streams : logStreams,
serializers : serializers,
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});
}
static checkLogPath(logPath) {
try {
if(!fs.statSync(logPath).isDirectory()) {
return new Error(`${logPath} is not a directory`);
}
return null;
} catch(e) {
if('ENOENT' === e.code) {
return new Error(`${logPath} does not exist`);
}
return e;
}
}
static hideSensitive(obj) {
try {
//
// Use a regexp -- we don't know how nested fields we want to seek and destroy may be
//
return JSON.parse(
JSON.stringify(obj).replace(/"(password)"\s?:\s?"([^"]+)"/, (match, valueName) => {
return `"${valueName}":"********"`;
})
);
} catch(e) {
// be safe and return empty obj!
return {};
}
}
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};