Context object to include memory used.

[mdale]

Would it be possible to include the memory used by the function in the context object ?
https://github.com/awsdocs/aws-lambda-developer-guide/tree/master/doc_source/nodejs-context.md

This is ultimately outputted in the cloudwatch log; but having a getter for the current usage similar to ( getRemainingTimeInMillis ) would be of great value. Today there is process.memoryUsage() that does not appear to have a 1 to 1 mapping of what AWS assesses in the end:

For example:

     const used = process.memoryUsage();
      let totalUsed = 0;
      for (let key in used) {
        const mb = Math.round(used[key] / 1024 / 1024 * 100) / 100;
        totalUsed+=mb;
        console.log(`${key} ${mb} MB`);
      }
      console.log("total: ", totalUsed)
      callback(null, response.ok(result) );

log:

2020-08-01T18:46:02.291Z	*	INFO	rss 47.01 MB
2020-08-01T18:46:02.291Z	*	INFO	heapTotal 15.92 MB
2020-08-01T18:46:02.292Z	*	INFO	heapUsed 7.58 MB
2020-08-01T18:46:02.292Z	*	INFO	external 1.52 MB
2020-08-01T18:46:02.292Z	*	INFO	arrayBuffers 0.24 MB
2020-08-01T18:46:02.292Z	*	INFO	total:  72.27
END RequestId: *
REPORT RequestId:*Duration: 1188.30 ms	Billed Duration: 1200 ms	Memory Size: 128 MB	Max Memory Used: 81 MB	Init Duration: 236.17 ms	

[devlinbd2]

Thank you for the suggestion. I will pass this idea to the Product Management team.
Regards,
Barry Devlin
Senior programmer writer, AWS