POST request body manipulation

[pumbac]

I have the same requirement to map $request_body.

$request_body is logging to my access_log correctly via proxy_pass setting.

I need to map $request_body to determine which part of it should be logged,
as sometime it is too large to be logged, like uploading files.

any suggestions?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,258335,263495#msg-263495