AWS API Gateway: Log Query String in Access Log

Question

I've enabled Access Logging to CloudWatch for my API in AWS API Gateway and that works fine. However, it will only log the path section of the URL and not my query string parameters.

My log format looks like this:

[$context.requestTime] ($context.status) "$context.httpMethod $context.path $context.requestId

Let's say, I call my API like this:

GET http://my.server.com/details?id=123

The corresponding access log line will look like this:

[19/Jun/2018:06:09:27 +0000] (200) "GET /details 5229a43c-7387-11e8-xxxx-xxxxxxxx

I need the id=123 as well, but I can't figure out how to access it. The documentation suggest using $input.params('id'), but that will always return -.

Answer 1

Only $context variables are supported, not $input, etc. AWS Ref: Have you seen https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-logging.html?