如何通过 `process.stdout.write` 在 lambda 中记录 `DEBUG`？

Question

When I am using console.log in my nodejs lambda, the log raw data shown in cloudwatch has timestamp as prefix.

For example, console.log({a:1, b:2} , will log

2020-09-21T13:05:02.312Z\t332c382e-605f-453f-b767-604dd5f542ab\tINFO\t{ a: 1, b: 2 }\n

I know that people are talking about using process.stdout.write but I don't know how to log DEBUG level in the cloudwatch. Everything stdout.write will be shown as INFO .

Answer 1

If you follow this example https://docs.aws.amazon.com/lambda/latest/dg/nodejs-logging.html

console.log or console.info (INFO)
console.warn (WARN)
console.debug (DEBUG)

I would recommend to use logger libraries like pino or winston loggers where there is much more control over logging.