Log Audit

Log audit is a simple tool to write in a standardized way to stdout.

Install

npm i --save log-audit

Usage

I recommend instantiating the logger in a central file and then exporting that file for useage throughout your app. For example:

logger.js

import logAudit from 'log-audit'
const {info, debug, audit} = logAudit(options, defaultFields)
export {info, debug, audit}

some-other-file.js

import {info} from 'logger'
info(fields)

fields should be an object of key value pairs that will be merged with the existing data. Ad-hoc type of data belongs here, ie: userId, etc

defaultFields should be an object of key value pairs that will appear on every call to logger automatically. Data that belongs on every request should be placed here, ie: timestamp, etc

Example:

info({
  userId: 'slk39lskj',
  endpoint: '/courses',
  method: 'GET',
  foo: 'bar'
})

API

logAudit([options,defaultFields])

Instantiates the logger with optional options and default fields

options:

• console: boolean - Defaults to true. If true, console.log will run for every log call
• consoleFormat: string - json | keyvalue - Determines if console.log logs in key/value format or json format.
• hideLogs: boolean - When true, hides all log messages. Not recommended for production.
• kafka: boolean - When true, log-audit will also post to kafka.
• kafkaTopic: string - Topic to be used for kafka. Required when kafka is set to true.
• token: string - API token to be used for posting to kafka. Required when kafka is set to true.
• baseUrl: string - Url to be used to post to kafka, ie https://domain.com. Required when kafka is set to true.
• seconds: boolean - Defaults to false. When true, divides by 1000 to give you seconds instead of milliseconds.

defaultFields:

An object of any values. This object will be used applied any time a log fn is called.

The logAudit function returns an object of functions which can then be used to log their appropriate level of logs:

• INFO: Informational logs, eg: Server has started on port 3004
• AUDIT: Information that would be useful for auditing, eg: A user created an item, a resource was deleted, etc...
• DEBUG: Debug info that would only be turned on when a config is set to allow for it.
• SENSITIVE: Stuff that shouldn't be logged at all, like SSNs and such. These logs will not show up... anywhere.